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Re: [PATCH] Smoke 12057 /pro/3gl/CPAN/perl-current
[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
8bfdd7d9 215 PL_rs = newSVpvn("\n", 1);
dc92893f 216
cea2e8a9 217 init_stacks();
79072805 218
748a9306 219 init_ids();
3280af22 220 PL_lex_state = LEX_NOTPARSING;
a5f75d66 221
312caa8e 222 JMPENV_BOOTSTRAP;
f86702cc 223 STATUS_ALL_SUCCESS;
224
0672f40e 225 init_i18nl10n(1);
36477c24 226 SET_NUMERIC_STANDARD();
0b5b802d 227
a7cb1f99
GS		 228 {
229 U8 *s;
230 PL_patchlevel = NEWSV(0,4);
155aba94 231 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 232 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 233 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 234 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 235 /* Build version strings using "native" characters */
236 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
237 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
238 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 239 *s = '\0';
240 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
241 SvPOK_on(PL_patchlevel);
242 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
243 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 244#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 245 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 246#endif
a7cb1f99
GS		 247 ;
248 SvNOK_on(PL_patchlevel); /* dual valued */
249 SvUTF8_on(PL_patchlevel);
250 SvREADONLY_on(PL_patchlevel);
251 }
79072805 252
ab821d7f 253#if defined(LOCAL_PATCH_COUNT)
3280af22 254 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 255#endif
256
52853b95
GS		 257#ifdef HAVE_INTERP_INTERN
258 sys_intern_init();
259#endif
260
4b556e6c 261 PerlIO_init(); /* Hook to IO system */
760ac839 262
3280af22
NIS		 263 PL_fdpid = newAV(); /* for remembering popen pids by fd */
264 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 265 PL_errors = newSVpvn("",0);
1fcf4c12 266#ifdef USE_ITHREADS
13137afc
AB		 267 PL_regex_padav = newAV();
268 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
269 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 270#endif
e5dd39fc
AB		 271#ifdef USE_REENTRANT_API
272 New(31337, PL_reentrant_buffer,1, REBUF);
273 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
274#endif
8990e307 275 ENTER;
79072805
LW		 276}
277
954c1994
GS		 278/*
279=for apidoc perl_destruct
280
281Shuts down a Perl interpreter. See L<perlembed>.
282
283=cut
284*/
285
31d77e54 286int
0cb96387 287perl_destruct(pTHXx)
79072805 288{
7c474504 289 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 290 HV *hv;
4d1ff10f 291#ifdef USE_5005THREADS
33f46ff6 292 Thread t;
cea2e8a9 293 dTHX;
4d1ff10f 294#endif /* USE_5005THREADS */
8990e307 295
7766f137
GS		 296 /* wait for all pseudo-forked children to finish */
297 PERL_WAIT_FOR_CHILDREN;
298
4d1ff10f 299#ifdef USE_5005THREADS
0f15f207 300#ifndef FAKE_THREADS
8023c3ce
MB		 301 /* Pass 1 on any remaining threads: detach joinables, join zombies */
302 retry_cleanup:
533c011a 303 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 304 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 305 "perl_destruct: waiting for %d threads...\n",
533c011a 306 PL_nthreads - 1));
33f46ff6 307 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 308 MUTEX_LOCK(&t->mutex);
309 switch (ThrSTATE(t)) {
310 AV *av;
c7848ba1 311 case THRf_ZOMBIE:
bf49b057 312 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 313 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 314 ThrSETSTATE(t, THRf_DEAD);
315 MUTEX_UNLOCK(&t->mutex);
533c011a 316 PL_nthreads--;
8023c3ce
MB		 317 /*
318 * The SvREFCNT_dec below may take a long time (e.g. av
319 * may contain an object scalar whose destructor gets
320 * called) so we have to unlock threads_mutex and start
321 * all over again.
322 */
533c011a 323 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 324 JOIN(t, &av);
605e5515 325 SvREFCNT_dec((SV*)av);
bf49b057 326 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 327 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 328 goto retry_cleanup;
c7848ba1 329 case THRf_R_JOINABLE:
bf49b057 330 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 331 "perl_destruct: detaching thread %p\n", t));
332 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 333 /*
c7848ba1
MB		 334 * We unlock threads_mutex and t->mutex in the opposite order
335 * from which we locked them just so that DETACH won't
336 * deadlock if it panics. It's only a breach of good style
337 * not a bug since they are unlocks not locks.
338 */
533c011a 339 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 340 DETACH(t);
341 MUTEX_UNLOCK(&t->mutex);
8023c3ce 342 goto retry_cleanup;
c7848ba1 343 default:
bf49b057 344 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 345 "perl_destruct: ignoring %p (state %u)\n",
346 t, ThrSTATE(t)));
347 MUTEX_UNLOCK(&t->mutex);
c7848ba1 348 /* fall through and out */
33f46ff6
MB		 349 }
350 }
8023c3ce
MB		 351 /* We leave the above "Pass 1" loop with threads_mutex still locked */
352
353 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 354 while (PL_nthreads > 1)
11343788 355 {
bf49b057 356 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 357 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 358 PL_nthreads - 1));
359 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 360 }
361 /* At this point, we're the last thread */
533c011a 362 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 363 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 364 MUTEX_DESTROY(&PL_threads_mutex);
365 COND_DESTROY(&PL_nthreads_cond);
b57a092c 366 PL_nthreads--;
0f15f207 367#endif /* !defined(FAKE_THREADS) */
4d1ff10f 368#endif /* USE_5005THREADS */
11343788 369
3280af22 370 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 371#ifdef DEBUGGING
372 {
373 char *s;
155aba94 374 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 375 int i = atoi(s);
376 if (destruct_level < i)
377 destruct_level = i;
378 }
4633a7c4
LW		 379 }
380#endif
381
31d77e54
AB		 382
383 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 384 dJMPENV;
385 int x = 0;
386
387 JMPENV_PUSH(x);
388 if (PL_endav && !PL_minus_c)
389 call_list(PL_scopestack_ix, PL_endav);
390 JMPENV_POP;
26f423df 391 }
f3faeb53 392 LEAVE;
a0d0e21e
LW		 393 FREETMPS;
394
ff0cee69 395 /* We must account for everything. */
396
397 /* Destroy the main CV and syntax tree */
3280af22
NIS		 398 if (PL_main_root) {
399 PL_curpad = AvARRAY(PL_comppad);
400 op_free(PL_main_root);
401 PL_main_root = Nullop;
a0d0e21e 402 }
3280af22
NIS		 403 PL_curcop = &PL_compiling;
404 PL_main_start = Nullop;
405 SvREFCNT_dec(PL_main_cv);
406 PL_main_cv = Nullcv;
24d3c518 407 PL_dirty = TRUE;
ff0cee69 408
13621cfb
NIS		 409 /* Tell PerlIO we are about to tear things apart in case
410 we have layers which are using resources that should
411 be cleaned up now.
412 */
413
414 PerlIO_destruct(aTHX);
415
3280af22 416 if (PL_sv_objcount) {
a0d0e21e
LW		 417 /*
418 * Try to destruct global references. We do this first so that the
419 * destructors and destructees still exist. Some sv's might remain.
420 * Non-referenced objects are on their own.
421 */
a0d0e21e 422 sv_clean_objs();
8990e307
LW		 423 }
424
5cd24f17 425 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 426 SvREFCNT_dec(PL_warnhook);
427 PL_warnhook = Nullsv;
428 SvREFCNT_dec(PL_diehook);
429 PL_diehook = Nullsv;
5cd24f17 430
4b556e6c 431 /* call exit list functions */
3280af22 432 while (PL_exitlistlen-- > 0)
acfe0abc 433 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 434
3280af22 435 Safefree(PL_exitlist);
4b556e6c 436
a0d0e21e 437 if (destruct_level == 0){
8990e307 438
a0d0e21e 439 DEBUG_P(debprofdump());
ac27b0f5 440
a0d0e21e 441 /* The exit() function will do everything that needs doing. */
31d77e54 442 return STATUS_NATIVE_EXPORT;;
a0d0e21e 443 }
5dd60ef7 444
551a8b83
JH		 445 /* jettison our possibly duplicated environment */
446
447#ifdef USE_ENVIRON_ARRAY
448 if (environ != PL_origenviron) {
449 I32 i;
450
451 for (i = 0; environ[i]; i++)
4b420006
JH		 452 safesysfree(environ[i]);
453 /* Must use safesysfree() when working with environ. */
454 safesysfree(environ);
551a8b83
JH		 455
456 environ = PL_origenviron;
457 }
458#endif
459
5f8cb046
DM		 460#ifdef USE_ITHREADS
461 /* the syntax tree is shared between clones
462 * so op_free(PL_main_root) only ReREFCNT_dec's
463 * REGEXPs in the parent interpreter
464 * we need to manually ReREFCNT_dec for the clones
465 */
466 {
467 I32 i = AvFILLp(PL_regex_padav) + 1;
468 SV **ary = AvARRAY(PL_regex_padav);
469
470 while (i) {
35061a7e 471 SV *resv = ary[--i];
ba89bb6e 472 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 473
474 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 475 /* this is PL_reg_curpm, already freed
35061a7e
DM		 476 * flag is set in regexec.c:S_regtry
477 */
478 SvFLAGS(resv) &= ~SVf_BREAK;
1cc8b4c5
AB		 479 }
480 else if(SvREPADTMP(resv)) {
481 SvREPADTMP_off(resv);
482 }
35061a7e 483 else {
5f8cb046
DM		 484 ReREFCNT_dec(re);
485 }
486 }
487 }
488 SvREFCNT_dec(PL_regex_padav);
489 PL_regex_padav = Nullav;
490 PL_regex_pad = NULL;
491#endif
492
5f05dabc 493 /* loosen bonds of global variables */
494
3280af22
NIS		 495 if(PL_rsfp) {
496 (void)PerlIO_close(PL_rsfp);
497 PL_rsfp = Nullfp;
8ebc5c01 498 }
499
500 /* Filters for program text */
3280af22
NIS		 501 SvREFCNT_dec(PL_rsfp_filters);
502 PL_rsfp_filters = Nullav;
8ebc5c01 503
504 /* switches */
3280af22
NIS		 505 PL_preprocess = FALSE;
506 PL_minus_n = FALSE;
507 PL_minus_p = FALSE;
508 PL_minus_l = FALSE;
509 PL_minus_a = FALSE;
510 PL_minus_F = FALSE;
511 PL_doswitches = FALSE;
599cee73 512 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 513 PL_doextract = FALSE;
514 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 515 PL_unsafe = FALSE;
516
517 Safefree(PL_inplace);
518 PL_inplace = Nullch;
a7cb1f99 519 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 520
521 if (PL_e_script) {
522 SvREFCNT_dec(PL_e_script);
523 PL_e_script = Nullsv;
8ebc5c01 524 }
525
bc0a45ed
DM		 526 while (--PL_origargc >= 0) {
527 Safefree(PL_origargv[PL_origargc]);
528 }
529 Safefree(PL_origargv);
530
8ebc5c01 531 /* magical thingies */
532
7889fe52
NIS		 533 SvREFCNT_dec(PL_ofs_sv); /* $, */
534 PL_ofs_sv = Nullsv;
5f05dabc 535
7889fe52
NIS		 536 SvREFCNT_dec(PL_ors_sv); /* $\ */
537 PL_ors_sv = Nullsv;
8ebc5c01 538
3280af22
NIS		 539 SvREFCNT_dec(PL_rs); /* $/ */
540 PL_rs = Nullsv;
dc92893f 541
d33b2eba
GS		 542 PL_multiline = 0; /* $* */
543 Safefree(PL_osname); /* $^O */
544 PL_osname = Nullch;
5f05dabc 545
3280af22
NIS		 546 SvREFCNT_dec(PL_statname);
547 PL_statname = Nullsv;
548 PL_statgv = Nullgv;
5f05dabc 549
8ebc5c01 550 /* defgv, aka *_ should be taken care of elsewhere */
551
8ebc5c01 552 /* clean up after study() */
3280af22
NIS		 553 SvREFCNT_dec(PL_lastscream);
554 PL_lastscream = Nullsv;
555 Safefree(PL_screamfirst);
556 PL_screamfirst = 0;
557 Safefree(PL_screamnext);
558 PL_screamnext = 0;
8ebc5c01 559
7d5ea4e7
GS		 560 /* float buffer */
561 Safefree(PL_efloatbuf);
562 PL_efloatbuf = Nullch;
563 PL_efloatsize = 0;
564
8ebc5c01 565 /* startup and shutdown function lists */
3280af22 566 SvREFCNT_dec(PL_beginav);
5a837c8f 567 SvREFCNT_dec(PL_beginav_save);
3280af22 568 SvREFCNT_dec(PL_endav);
7d30b5c4 569 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 570 SvREFCNT_dec(PL_initav);
571 PL_beginav = Nullav;
5a837c8f 572 PL_beginav_save = Nullav;
3280af22 573 PL_endav = Nullav;
7d30b5c4 574 PL_checkav = Nullav;
3280af22 575 PL_initav = Nullav;
5618dfe8 576
8ebc5c01 577 /* shortcuts just get cleared */
3280af22 578 PL_envgv = Nullgv;
3280af22
NIS		 579 PL_incgv = Nullgv;
580 PL_hintgv = Nullgv;
581 PL_errgv = Nullgv;
582 PL_argvgv = Nullgv;
583 PL_argvoutgv = Nullgv;
584 PL_stdingv = Nullgv;
bf49b057 585 PL_stderrgv = Nullgv;
3280af22
NIS		 586 PL_last_in_gv = Nullgv;
587 PL_replgv = Nullgv;
5c831c24 588 PL_debstash = Nullhv;
8ebc5c01 589
590 /* reset so print() ends up where we expect */
591 setdefout(Nullgv);
5c831c24 592
7a1c5554
GS		 593 SvREFCNT_dec(PL_argvout_stack);
594 PL_argvout_stack = Nullav;
8ebc5c01 595
5c831c24
GS		 596 SvREFCNT_dec(PL_modglobal);
597 PL_modglobal = Nullhv;
598 SvREFCNT_dec(PL_preambleav);
599 PL_preambleav = Nullav;
600 SvREFCNT_dec(PL_subname);
601 PL_subname = Nullsv;
602 SvREFCNT_dec(PL_linestr);
603 PL_linestr = Nullsv;
604 SvREFCNT_dec(PL_pidstatus);
605 PL_pidstatus = Nullhv;
606 SvREFCNT_dec(PL_toptarget);
607 PL_toptarget = Nullsv;
608 SvREFCNT_dec(PL_bodytarget);
609 PL_bodytarget = Nullsv;
610 PL_formtarget = Nullsv;
611
d33b2eba 612 /* free locale stuff */
b9582b6a 613#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 614 Safefree(PL_collation_name);
615 PL_collation_name = Nullch;
b9582b6a 616#endif
d33b2eba 617
b9582b6a 618#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 619 Safefree(PL_numeric_name);
620 PL_numeric_name = Nullch;
a453c169 621 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 622#endif
d33b2eba 623
5c831c24
GS		 624 /* clear utf8 character classes */
625 SvREFCNT_dec(PL_utf8_alnum);
626 SvREFCNT_dec(PL_utf8_alnumc);
627 SvREFCNT_dec(PL_utf8_ascii);
628 SvREFCNT_dec(PL_utf8_alpha);
629 SvREFCNT_dec(PL_utf8_space);
630 SvREFCNT_dec(PL_utf8_cntrl);
631 SvREFCNT_dec(PL_utf8_graph);
632 SvREFCNT_dec(PL_utf8_digit);
633 SvREFCNT_dec(PL_utf8_upper);
634 SvREFCNT_dec(PL_utf8_lower);
635 SvREFCNT_dec(PL_utf8_print);
636 SvREFCNT_dec(PL_utf8_punct);
637 SvREFCNT_dec(PL_utf8_xdigit);
638 SvREFCNT_dec(PL_utf8_mark);
639 SvREFCNT_dec(PL_utf8_toupper);
640 SvREFCNT_dec(PL_utf8_tolower);
641 PL_utf8_alnum = Nullsv;
642 PL_utf8_alnumc = Nullsv;
643 PL_utf8_ascii = Nullsv;
644 PL_utf8_alpha = Nullsv;
645 PL_utf8_space = Nullsv;
646 PL_utf8_cntrl = Nullsv;
647 PL_utf8_graph = Nullsv;
648 PL_utf8_digit = Nullsv;
649 PL_utf8_upper = Nullsv;
650 PL_utf8_lower = Nullsv;
651 PL_utf8_print = Nullsv;
652 PL_utf8_punct = Nullsv;
653 PL_utf8_xdigit = Nullsv;
654 PL_utf8_mark = Nullsv;
655 PL_utf8_toupper = Nullsv;
656 PL_utf8_totitle = Nullsv;
657 PL_utf8_tolower = Nullsv;
658
971a9dd3
GS		 659 if (!specialWARN(PL_compiling.cop_warnings))
660 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 661 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 662 if (!specialCopIO(PL_compiling.cop_io))
663 SvREFCNT_dec(PL_compiling.cop_io);
664 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 665#ifdef USE_ITHREADS
666 Safefree(CopFILE(&PL_compiling));
667 CopFILE(&PL_compiling) = Nullch;
668 Safefree(CopSTASHPV(&PL_compiling));
669#else
01724ea0 670 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 671 CopFILEGV(&PL_compiling) = Nullgv;
672 /* cop_stash is not refcounted */
01724ea0 673#endif
5c831c24 674
a0d0e21e 675 /* Prepare to destruct main symbol table. */
5f05dabc 676
3280af22
NIS		 677 hv = PL_defstash;
678 PL_defstash = 0;
a0d0e21e 679 SvREFCNT_dec(hv);
5c831c24
GS		 680 SvREFCNT_dec(PL_curstname);
681 PL_curstname = Nullsv;
a0d0e21e 682
5a844595
GS		 683 /* clear queued errors */
684 SvREFCNT_dec(PL_errors);
685 PL_errors = Nullsv;
686
a0d0e21e 687 FREETMPS;
0453d815 688 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 689 if (PL_scopestack_ix != 0)
0453d815
PM		 690 Perl_warner(aTHX_ WARN_INTERNAL,
691 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 692 (long)PL_scopestack_ix);
693 if (PL_savestack_ix != 0)
0453d815
PM		 694 Perl_warner(aTHX_ WARN_INTERNAL,
695 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 696 (long)PL_savestack_ix);
697 if (PL_tmps_floor != -1)
0453d815 698 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 699 (long)PL_tmps_floor + 1);
a0d0e21e 700 if (cxstack_ix != -1)
0453d815 701 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 702 (long)cxstack_ix + 1);
a0d0e21e 703 }
8990e307
LW		 704
705 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 706 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 707 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 708
709 /* the 2 is for PL_fdpid and PL_strtab */
710 while (PL_sv_count > 2 && sv_clean_all())
711 ;
712
d33b2eba
GS		 713 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
714 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 715 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
716 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 717
d4777f27
GS		 718 AvREAL_off(PL_fdpid); /* no surviving entries */
719 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 720 PL_fdpid = Nullav;
721
6c644e78
GS		 722#ifdef HAVE_INTERP_INTERN
723 sys_intern_clear();
724#endif
725
6e72f9df 726 /* Destruct the global string table. */
727 {
728 /* Yell and reset the HeVAL() slots that are still holding refcounts,
729 * so that sv_free() won't fail on them.
730 */
731 I32 riter;
732 I32 max;
733 HE *hent;
734 HE **array;
735
736 riter = 0;
3280af22
NIS		 737 max = HvMAX(PL_strtab);
738 array = HvARRAY(PL_strtab);
6e72f9df 739 hent = array[0];
740 for (;;) {
0453d815
PM		 741 if (hent && ckWARN_d(WARN_INTERNAL)) {
742 Perl_warner(aTHX_ WARN_INTERNAL,
743 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 744 HeVAL(hent) - Nullsv, HeKEY(hent));
745 HeVAL(hent) = Nullsv;
746 hent = HeNEXT(hent);
747 }
748 if (!hent) {
749 if (++riter > max)
750 break;
751 hent = array[riter];
752 }
753 }
754 }
3280af22 755 SvREFCNT_dec(PL_strtab);
6e72f9df 756
e652bb2f 757#ifdef USE_ITHREADS
a0739874
DM		 758 /* free the pointer table used for cloning */
759 ptr_table_free(PL_ptr_table);
53186e96 760#endif
a0739874 761
d33b2eba
GS		 762 /* free special SVs */
763
764 SvREFCNT(&PL_sv_yes) = 0;
765 sv_clear(&PL_sv_yes);
766 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 767 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 768
769 SvREFCNT(&PL_sv_no) = 0;
770 sv_clear(&PL_sv_no);
771 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 772 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 773
774 SvREFCNT(&PL_sv_undef) = 0;
775 SvREADONLY_off(&PL_sv_undef);
d33b2eba 776
0453d815
PM		 777 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
778 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 779
3280af22 780 Safefree(PL_origfilename);
3280af22 781 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 782 if (PL_reg_curpm)
783 Safefree(PL_reg_curpm);
82ba1be6 784 Safefree(PL_reg_poscache);
3280af22
NIS		 785 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
786 Safefree(PL_op_mask);
cf36064f
GS		 787 Safefree(PL_psig_ptr);
788 Safefree(PL_psig_name);
2c2666fc 789 Safefree(PL_bitcount);
ce08f86c 790 Safefree(PL_psig_pend);
6e72f9df 791 nuke_stacks();
3280af22 792 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 793
a0d0e21e 794 DEBUG_P(debprofdump());
4d1ff10f 795#ifdef USE_5005THREADS
5f08fbcd 796 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 797 MUTEX_DESTROY(&PL_sv_mutex);
798 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 799 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 800 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 801 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 802#ifdef EMULATE_ATOMIC_REFCOUNTS
803 MUTEX_DESTROY(&PL_svref_mutex);
804#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 805
8023c3ce 806 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 807 Safefree(SvPVX(PL_thrsv));
808 Safefree(SvANY(PL_thrsv));
809 Safefree(PL_thrsv);
810 PL_thrsv = Nullsv;
4d1ff10f 811#endif /* USE_5005THREADS */
d33b2eba 812
e5dd39fc
AB		 813#ifdef USE_REENTRANT_API
814 Safefree(PL_reentrant_buffer->tmbuff);
815 Safefree(PL_reentrant_buffer);
816#endif
817
612f20c3
GS		 818 sv_free_arenas();
819
fc36a67e 820 /* As the absolutely last thing, free the non-arena SV for mess() */
821
3280af22 822 if (PL_mess_sv) {
9c63abab
GS		 823 /* it could have accumulated taint magic */
824 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
825 MAGIC* mg;
826 MAGIC* moremagic;
827 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
828 moremagic = mg->mg_moremagic;
14befaf4
DM		 829 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
830 && mg->mg_len >= 0)
9c63abab
GS		 831 Safefree(mg->mg_ptr);
832 Safefree(mg);
833 }
834 }
fc36a67e 835 /* we know that type >= SVt_PV */
155aba94 836 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 837 Safefree(SvPVX(PL_mess_sv));
838 Safefree(SvANY(PL_mess_sv));
839 Safefree(PL_mess_sv);
840 PL_mess_sv = Nullsv;
fc36a67e 841 }
31d77e54 842 return STATUS_NATIVE_EXPORT;
79072805
LW		 843}
844
954c1994
GS		 845/*
846=for apidoc perl_free
847
848Releases a Perl interpreter. See L<perlembed>.
849
850=cut
851*/
852
79072805 853void
0cb96387 854perl_free(pTHXx)
79072805 855{
acfe0abc 856#if defined(WIN32) || defined(NETWARE)
ce3e5b80 857# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 858# ifdef NETWARE
859 void *host = nw_internal_host;
860# else
861 void *host = w32_internal_host;
862# endif
863# ifndef NETWARE
864 if (PerlProc_lasthost()) {
6ea0e807 865# ifdef USE_PERLIO
ce08f86c 866 PerlIO_cleanup();
6ea0e807 867# endif
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
6ea0e807 877# ifdef USE_PERLIO
acfe0abc 878 PerlIO_cleanup();
6ea0e807 879# endif
1c0ca838
GS		 880 PerlMem_free(aTHXx);
881# endif
acfe0abc
GS		 882#else
883 PerlMem_free(aTHXx);
76e3520e 884#endif
79072805
LW		 885}
886
4b556e6c 887void
864dbfa3 888Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 889{
3280af22
NIS		 890 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
891 PL_exitlist[PL_exitlistlen].fn = fn;
892 PL_exitlist[PL_exitlistlen].ptr = ptr;
893 ++PL_exitlistlen;
4b556e6c
JD		 894}
895
954c1994
GS		 896/*
897=for apidoc perl_parse
898
899Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
900
901=cut
902*/
903
79072805 904int
0cb96387 905perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 906{
6224f72b 907 I32 oldscope;
6224f72b 908 int ret;
db36c5a1 909 dJMPENV;
4d1ff10f 910#ifdef USE_5005THREADS
cea2e8a9
GS		 911 dTHX;
912#endif
8d063cd8 913
a687059c
LW		 914#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
915#ifdef IAMSUID
916#undef IAMSUID
cea2e8a9 917 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 918setuid perl scripts securely.\n");
919#endif
920#endif
921
8f1f23e8 922#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 923 _dyld_lookup_and_bind
924 ("__environ", (unsigned long *) &environ_pointer, NULL);
925#endif /* environ */
926
3280af22 927 PL_origargc = argc;
bc0a45ed
DM		 928 {
929 /* we copy rather than point to argv
930 * since perl_clone will copy and perl_destruct
931 * has no way of knowing if we've made a copy or
932 * just point to argv
933 */
934 int i = PL_origargc;
935 New(0, PL_origargv, i+1, char*);
936 PL_origargv[i] = '\0';
937 while (i-- > 0) {
938 PL_origargv[i] = savepv(argv[i]);
939 }
940 }
941
fa6a1c44 942#ifdef USE_ENVIRON_ARRAY
3280af22 943 PL_origenviron = environ;
a0d0e21e
LW		 944#endif
945
3280af22 946 if (PL_do_undump) {
a0d0e21e
LW		 947
948 /* Come here if running an undumped a.out. */
949
3280af22
NIS		 950 PL_origfilename = savepv(argv[0]);
951 PL_do_undump = FALSE;
a0d0e21e 952 cxstack_ix = -1; /* start label stack again */
748a9306 953 init_ids();
a0d0e21e
LW		 954 init_postdump_symbols(argc,argv,env);
955 return 0;
956 }
957
3280af22
NIS		 958 if (PL_main_root) {
959 PL_curpad = AvARRAY(PL_comppad);
960 op_free(PL_main_root);
961 PL_main_root = Nullop;
ff0cee69 962 }
3280af22
NIS		 963 PL_main_start = Nullop;
964 SvREFCNT_dec(PL_main_cv);
965 PL_main_cv = Nullcv;
79072805 966
3280af22
NIS		 967 time(&PL_basetime);
968 oldscope = PL_scopestack_ix;
599cee73 969 PL_dowarn = G_WARN_OFF;
f86702cc 970
14dd3ad8
GS		 971#ifdef PERL_FLEXIBLE_EXCEPTIONS
972 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
973#else
974 JMPENV_PUSH(ret);
975#endif
6224f72b 976 switch (ret) {
312caa8e 977 case 0:
14dd3ad8
GS		 978#ifndef PERL_FLEXIBLE_EXCEPTIONS
979 parse_body(env,xsinit);
980#endif
7d30b5c4
GS		 981 if (PL_checkav)
982 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 983 ret = 0;
984 break;
6224f72b
GS		 985 case 1:
986 STATUS_ALL_FAILURE;
987 /* FALL THROUGH */
988 case 2:
989 /* my_exit() was called */
3280af22 990 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 991 LEAVE;
992 FREETMPS;
3280af22 993 PL_curstash = PL_defstash;
7d30b5c4
GS		 994 if (PL_checkav)
995 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 996 ret = STATUS_NATIVE_EXPORT;
997 break;
6224f72b 998 case 3:
bf49b057 999 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1000 ret = 1;
1001 break;
6224f72b 1002 }
14dd3ad8
GS		 1003 JMPENV_POP;
1004 return ret;
1005}
1006
1007#ifdef PERL_FLEXIBLE_EXCEPTIONS
1008STATIC void *
1009S_vparse_body(pTHX_ va_list args)
1010{
1011 char **env = va_arg(args, char**);
1012 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1013
1014 return parse_body(env, xsinit);
312caa8e 1015}
14dd3ad8 1016#endif
312caa8e
CS		 1017
1018STATIC void *
14dd3ad8 1019S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1020{
312caa8e
CS		 1021 int argc = PL_origargc;
1022 char **argv = PL_origargv;
312caa8e
CS		 1023 char *scriptname = NULL;
1024 int fdscript = -1;
1025 VOL bool dosearch = FALSE;
1026 char *validarg = "";
1027 AV* comppadlist;
1028 register SV *sv;
1029 register char *s;
cf756827 1030 char *cddir = Nullch;
312caa8e 1031
3280af22 1032 sv_setpvn(PL_linestr,"",0);
79cb57f6 1033 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1034 SAVEFREESV(sv);
1035 init_main_stash();
54310121 1036
6224f72b
GS		 1037 for (argc--,argv++; argc > 0; argc--,argv++) {
1038 if (argv[0][0] != '-' || !argv[0][1])
1039 break;
1040#ifdef DOSUID
1041 if (*validarg)
1042 validarg = " PHOOEY ";
1043 else
1044 validarg = argv[0];
13281fa4 1045#endif
6224f72b
GS		 1046 s = argv[0]+1;
1047 reswitch:
1048 switch (*s) {
729a02f2
GS		 1049 case 'C':
1050#ifdef WIN32
c0932edc 1051 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1052 /* FALL THROUGH */
1053#endif
1d5472a9
GS		 1054#ifndef PERL_STRICT_CR
1055 case '\r':
1056#endif
6224f72b
GS		 1057 case ' ':
1058 case '0':
1059 case 'F':
1060 case 'a':
1061 case 'c':
1062 case 'd':
1063 case 'D':
1064 case 'h':
1065 case 'i':
1066 case 'l':
1067 case 'M':
1068 case 'm':
1069 case 'n':
1070 case 'p':
1071 case 's':
1072 case 'u':
1073 case 'U':
1074 case 'v':
599cee73
PM		 1075 case 'W':
1076 case 'X':
6224f72b 1077 case 'w':
155aba94 1078 if ((s = moreswitches(s)))
6224f72b
GS		 1079 goto reswitch;
1080 break;
33b78306 1081
6224f72b 1082 case 'T':
3280af22 1083 PL_tainting = TRUE;
6224f72b
GS		 1084 s++;
1085 goto reswitch;
f86702cc 1086
6224f72b 1087 case 'e':
bf4acbe4
GS		 1088#ifdef MACOS_TRADITIONAL
1089 /* ignore -e for Dev:Pseudo argument */
1090 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1091 break;
bf4acbe4 1092#endif
3280af22 1093 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1094 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1095 if (!PL_e_script) {
79cb57f6 1096 PL_e_script = newSVpvn("",0);
0cb96387 1097 filter_add(read_e_script, NULL);
6224f72b
GS		 1098 }
1099 if (*++s)
3280af22 1100 sv_catpv(PL_e_script, s);
6224f72b 1101 else if (argv[1]) {
3280af22 1102 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1103 argc--,argv++;
1104 }
1105 else
cea2e8a9 1106 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1107 sv_catpv(PL_e_script, "\n");
6224f72b 1108 break;
afe37c7d 1109
6224f72b
GS		 1110 case 'I': /* -I handled both here and in moreswitches() */
1111 forbid_setid("-I");
1112 if (!*++s && (s=argv[1]) != Nullch) {
1113 argc--,argv++;
1114 }
6224f72b 1115 if (s && *s) {
0df16ed7
GS		 1116 char *p;
1117 STRLEN len = strlen(s);
1118 p = savepvn(s, len);
9c8a64f0 1119 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1120 sv_catpvn(sv, "-I", 2);
1121 sv_catpvn(sv, p, len);
1122 sv_catpvn(sv, " ", 1);
6224f72b 1123 Safefree(p);
0df16ed7
GS		 1124 }
1125 else
a67e862a 1126 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1127 break;
1128 case 'P':
1129 forbid_setid("-P");
3280af22 1130 PL_preprocess = TRUE;
6224f72b
GS		 1131 s++;
1132 goto reswitch;
1133 case 'S':
1134 forbid_setid("-S");
1135 dosearch = TRUE;
1136 s++;
1137 goto reswitch;
1138 case 'V':
3280af22
NIS		 1139 if (!PL_preambleav)
1140 PL_preambleav = newAV();
1141 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1142 if (*++s != ':') {
3280af22 1143 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1144#ifdef VMS
6b88bc9c 1145 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1146#else
3280af22 1147 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1148#endif
3280af22 1149 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1150# ifdef DEBUGGING
3280af22 1151 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1152# endif
6224f72b 1153# ifdef MULTIPLICITY
8f872242 1154 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1155# endif
4d1ff10f
AB		 1156# ifdef USE_5005THREADS
1157 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1158# endif
ac5e8965
JH		 1159# ifdef USE_ITHREADS
1160 sv_catpv(PL_Sv," USE_ITHREADS");
1161# endif
10cc9d2a
JH		 1162# ifdef USE_64_BIT_INT
1163 sv_catpv(PL_Sv," USE_64_BIT_INT");
1164# endif
1165# ifdef USE_64_BIT_ALL
1166 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1167# endif
1168# ifdef USE_LONG_DOUBLE
1169 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1170# endif
53430762
JH		 1171# ifdef USE_LARGE_FILES
1172 sv_catpv(PL_Sv," USE_LARGE_FILES");
1173# endif
ac5e8965
JH		 1174# ifdef USE_SOCKS
1175 sv_catpv(PL_Sv," USE_SOCKS");
1176# endif
b363f7ed
GS		 1177# ifdef PERL_IMPLICIT_CONTEXT
1178 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1179# endif
1180# ifdef PERL_IMPLICIT_SYS
1181 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1182# endif
3280af22 1183 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1184
6224f72b
GS		 1185#if defined(LOCAL_PATCH_COUNT)
1186 if (LOCAL_PATCH_COUNT > 0) {
1187 int i;
3280af22 1188 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1189 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1190 if (PL_localpatches[i])
cea2e8a9 1191 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1192 }
1193 }
1194#endif
cea2e8a9 1195 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1196#ifdef __DATE__
1197# ifdef __TIME__
cea2e8a9 1198 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1199# else
cea2e8a9 1200 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1201# endif
1202#endif
3280af22 1203 sv_catpv(PL_Sv, "; \
6224f72b 1204$\"=\"\\n \"; \
69fcd688
JH		 1205@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1206#ifdef __CYGWIN__
1207 sv_catpv(PL_Sv,"\
1208push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1209#endif
1210 sv_catpv(PL_Sv, "\
6224f72b
GS		 1211print \" \\%ENV:\\n @env\\n\" if @env; \
1212print \" \\@INC:\\n @INC\\n\";");
1213 }
1214 else {
3280af22
NIS		 1215 PL_Sv = newSVpv("config_vars(qw(",0);
1216 sv_catpv(PL_Sv, ++s);
1217 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1218 s += strlen(s);
1219 }
3280af22 1220 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1221 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1222 goto reswitch;
1223 case 'x':
3280af22 1224 PL_doextract = TRUE;
6224f72b
GS		 1225 s++;
1226 if (*s)
f4c556ac 1227 cddir = s;
6224f72b
GS		 1228 break;
1229 case 0:
1230 break;
1231 case '-':
1232 if (!*++s || isSPACE(*s)) {
1233 argc--,argv++;
1234 goto switch_end;
1235 }
1236 /* catch use of gnu style long options */
1237 if (strEQ(s, "version")) {
1238 s = "v";
1239 goto reswitch;
1240 }
1241 if (strEQ(s, "help")) {
1242 s = "h";
1243 goto reswitch;
1244 }
1245 s--;
1246 /* FALL THROUGH */
1247 default:
cea2e8a9 1248 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1249 }
1250 }
6224f72b 1251 switch_end:
54310121 1252
f675dbe5
CB		 1253 if (
1254#ifndef SECURE_INTERNAL_GETENV
1255 !PL_tainting &&
1256#endif
cf756827 1257 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1258 {
cf756827 1259 char *popt = s;
74288ac8
GS		 1260 while (isSPACE(*s))
1261 s++;
1262 if (*s == '-' && *(s+1) == 'T')
1263 PL_tainting = TRUE;
1264 else {
cf756827 1265 char *popt_copy = Nullch;
74288ac8 1266 while (s && *s) {
4ea8f8fb 1267 char *d;
74288ac8
GS		 1268 while (isSPACE(*s))
1269 s++;
1270 if (*s == '-') {
1271 s++;
1272 if (isSPACE(*s))
1273 continue;
1274 }
4ea8f8fb 1275 d = s;
74288ac8
GS		 1276 if (!*s)
1277 break;
1278 if (!strchr("DIMUdmw", *s))
cea2e8a9 1279 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1280 while (++s && *s) {
1281 if (isSPACE(*s)) {
cf756827
GS		 1282 if (!popt_copy) {
1283 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1284 s = popt_copy + (s - popt);
1285 d = popt_copy + (d - popt);
1286 }
4ea8f8fb
MS		 1287 *s++ = '\0';
1288 break;
1289 }
1290 }
1291 moreswitches(d);
6224f72b 1292 }
6224f72b
GS		 1293 }
1294 }
a0d0e21e 1295
6224f72b
GS		 1296 if (!scriptname)
1297 scriptname = argv[0];
3280af22 1298 if (PL_e_script) {
6224f72b
GS		 1299 argc++,argv--;
1300 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1301 }
1302 else if (scriptname == Nullch) {
1303#ifdef MSDOS
1304 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1305 moreswitches("h");
1306#endif
1307 scriptname = "-";
1308 }
1309
1310 init_perllib();
1311
1312 open_script(scriptname,dosearch,sv,&fdscript);
1313
1314 validate_suid(validarg, scriptname,fdscript);
1315
64ca3a65 1316#ifndef PERL_MICRO
0b5b802d
GS		 1317#if defined(SIGCHLD) || defined(SIGCLD)
1318 {
1319#ifndef SIGCHLD
1320# define SIGCHLD SIGCLD
1321#endif
1322 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1323 if (sigstate == SIG_IGN) {
1324 if (ckWARN(WARN_SIGNAL))
1325 Perl_warner(aTHX_ WARN_SIGNAL,
1326 "Can't ignore signal CHLD, forcing to default");
1327 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1328 }
1329 }
1330#endif
64ca3a65 1331#endif
0b5b802d 1332
bf4acbe4
GS		 1333#ifdef MACOS_TRADITIONAL
1334 if (PL_doextract || gMacPerl_AlwaysExtract) {
1335#else
f4c556ac 1336 if (PL_doextract) {
bf4acbe4 1337#endif
6224f72b 1338 find_beginning();
f4c556ac
GS		 1339 if (cddir && PerlDir_chdir(cddir) < 0)
1340 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1341
1342 }
6224f72b 1343
3280af22
NIS		 1344 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1345 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1346 CvUNIQUE_on(PL_compcv);
1347
1348 PL_comppad = newAV();
1349 av_push(PL_comppad, Nullsv);
1350 PL_curpad = AvARRAY(PL_comppad);
1351 PL_comppad_name = newAV();
1352 PL_comppad_name_fill = 0;
1353 PL_min_intro_pending = 0;
1354 PL_padix = 0;
4d1ff10f 1355#ifdef USE_5005THREADS
79cb57f6 1356 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1357 PL_curpad[0] = (SV*)newAV();
1358 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1359 CvOWNER(PL_compcv) = 0;
1360 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1361 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1362#endif /* USE_5005THREADS */
6224f72b
GS		 1363
1364 comppadlist = newAV();
1365 AvREAL_off(comppadlist);
3280af22
NIS		 1366 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1367 av_store(comppadlist, 1, (SV*)PL_comppad);
1368 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1369
0c4f7ff0 1370 boot_core_PerlIO();
6224f72b 1371 boot_core_UNIVERSAL();
9a34ef1d 1372#ifndef PERL_MICRO
09bef843 1373 boot_core_xsutils();
9a34ef1d 1374#endif
6224f72b
GS		 1375
1376 if (xsinit)
acfe0abc 1377 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1378#ifndef PERL_MICRO
ed79a026 1379#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1380 init_os_extras();
6224f72b 1381#endif
64ca3a65 1382#endif
6224f72b 1383
29209bc5 1384#ifdef USE_SOCKS
1b9c9cf5
DH		 1385# ifdef HAS_SOCKS5_INIT
1386 socks5_init(argv[0]);
1387# else
29209bc5 1388 SOCKSinit(argv[0]);
1b9c9cf5 1389# endif
ac27b0f5 1390#endif
29209bc5 1391
6224f72b
GS		 1392 init_predump_symbols();
1393 /* init_postdump_symbols not currently designed to be called */
1394 /* more than once (ENV isn't cleared first, for example) */
1395 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1396 if (!PL_do_undump)
6224f72b
GS		 1397 init_postdump_symbols(argc,argv,env);
1398
1399 init_lexer();
1400
1401 /* now parse the script */
1402
1403 SETERRNO(0,SS$_NORMAL);
3280af22 1404 PL_error_count = 0;
bf4acbe4
GS		 1405#ifdef MACOS_TRADITIONAL
1406 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1407 if (PL_minus_c)
1408 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1409 else {
1410 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1411 MacPerl_MPWFileName(PL_origfilename));
1412 }
1413 }
1414#else
3280af22
NIS		 1415 if (yyparse() || PL_error_count) {
1416 if (PL_minus_c)
cea2e8a9 1417 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1418 else {
cea2e8a9 1419 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1420 PL_origfilename);
6224f72b
GS		 1421 }
1422 }
bf4acbe4 1423#endif
57843af0 1424 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1425 PL_curstash = PL_defstash;
1426 PL_preprocess = FALSE;
1427 if (PL_e_script) {
1428 SvREFCNT_dec(PL_e_script);
1429 PL_e_script = Nullsv;
6224f72b
GS		 1430 }
1431
8bfdd7d9
HS		 1432/*
1433 Not sure that this is still the right place to do this now that we
1434 no longer use PL_nrs. HVDS 2001/09/09
1435*/
864dbfa3 1436 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1437
3280af22 1438 if (PL_do_undump)
6224f72b
GS		 1439 my_unexec();
1440
57843af0
GS		 1441 if (isWARN_ONCE) {
1442 SAVECOPFILE(PL_curcop);
1443 SAVECOPLINE(PL_curcop);
3280af22 1444 gv_check(PL_defstash);
57843af0 1445 }
6224f72b
GS		 1446
1447 LEAVE;
1448 FREETMPS;
1449
1450#ifdef MYMALLOC
1451 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1452 dump_mstats("after compilation:");
1453#endif
1454
1455 ENTER;
3280af22 1456 PL_restartop = 0;
312caa8e 1457 return NULL;
6224f72b
GS		 1458}
1459
954c1994
GS		 1460/*
1461=for apidoc perl_run
1462
1463Tells a Perl interpreter to run. See L<perlembed>.
1464
1465=cut
1466*/
1467
6224f72b 1468int
0cb96387 1469perl_run(pTHXx)
6224f72b 1470{
6224f72b 1471 I32 oldscope;
14dd3ad8 1472 int ret = 0;
db36c5a1 1473 dJMPENV;
4d1ff10f 1474#ifdef USE_5005THREADS
cea2e8a9
GS		 1475 dTHX;
1476#endif
6224f72b 1477
3280af22 1478 oldscope = PL_scopestack_ix;
6224f72b 1479
14dd3ad8 1480#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1481 redo_body:
14dd3ad8
GS		 1482 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1483#else
1484 JMPENV_PUSH(ret);
1485#endif
6224f72b
GS		 1486 switch (ret) {
1487 case 1:
1488 cxstack_ix = -1; /* start context stack again */
312caa8e 1489 goto redo_body;
14dd3ad8
GS		 1490 case 0: /* normal completion */
1491#ifndef PERL_FLEXIBLE_EXCEPTIONS
1492 redo_body:
1493 run_body(oldscope);
1494#endif
1495 /* FALL THROUGH */
1496 case 2: /* my_exit() */
3280af22 1497 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1498 LEAVE;
1499 FREETMPS;
3280af22 1500 PL_curstash = PL_defstash;
31d77e54
AB		 1501 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1502 PL_endav && !PL_minus_c)
1503 call_list(oldscope, PL_endav);
6224f72b
GS		 1504#ifdef MYMALLOC
1505 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1506 dump_mstats("after execution: ");
1507#endif
14dd3ad8
GS		 1508 ret = STATUS_NATIVE_EXPORT;
1509 break;
6224f72b 1510 case 3:
312caa8e
CS		 1511 if (PL_restartop) {
1512 POPSTACK_TO(PL_mainstack);
1513 goto redo_body;
6224f72b 1514 }
bf49b057 1515 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1516 FREETMPS;
14dd3ad8
GS		 1517 ret = 1;
1518 break;
6224f72b
GS		 1519 }
1520
14dd3ad8
GS		 1521 JMPENV_POP;
1522 return ret;
312caa8e
CS		 1523}
1524
14dd3ad8 1525#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1526STATIC void *
14dd3ad8 1527S_vrun_body(pTHX_ va_list args)
312caa8e 1528{
312caa8e
CS		 1529 I32 oldscope = va_arg(args, I32);
1530
14dd3ad8
GS		 1531 return run_body(oldscope);
1532}
1533#endif
1534
1535
1536STATIC void *
1537S_run_body(pTHX_ I32 oldscope)
1538{
6224f72b 1539 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1540 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1541
3280af22 1542 if (!PL_restartop) {
6224f72b
GS		 1543 DEBUG_x(dump_all());
1544 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1545 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1546 PTR2UV(thr)));
6224f72b 1547
3280af22 1548 if (PL_minus_c) {
bf4acbe4
GS		 1549#ifdef MACOS_TRADITIONAL
1550 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1551#else
bf49b057 1552 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1553#endif
6224f72b
GS		 1554 my_exit(0);
1555 }
3280af22 1556 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1557 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1558 if (PL_initav)
1559 call_list(oldscope, PL_initav);
6224f72b
GS		 1560 }
1561
1562 /* do it */
1563
3280af22 1564 if (PL_restartop) {
533c011a 1565 PL_op = PL_restartop;
3280af22 1566 PL_restartop = 0;
cea2e8a9 1567 CALLRUNOPS(aTHX);
6224f72b 1568 }
3280af22
NIS		 1569 else if (PL_main_start) {
1570 CvDEPTH(PL_main_cv) = 1;
533c011a 1571 PL_op = PL_main_start;
cea2e8a9 1572 CALLRUNOPS(aTHX);
6224f72b
GS		 1573 }
1574
f6b3007c
JH		 1575 my_exit(0);
1576 /* NOTREACHED */
312caa8e 1577 return NULL;
6224f72b
GS		 1578}
1579
954c1994
GS		 1580/*
1581=for apidoc p||get_sv
1582
1583Returns the SV of the specified Perl scalar. If C<create> is set and the
1584Perl variable does not exist then it will be created. If C<create> is not
1585set and the variable does not exist then NULL is returned.
1586
1587=cut
1588*/
1589
6224f72b 1590SV*
864dbfa3 1591Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1592{
1593 GV *gv;
4d1ff10f 1594#ifdef USE_5005THREADS
6224f72b
GS		 1595 if (name[1] == '\0' && !isALPHA(name[0])) {
1596 PADOFFSET tmp = find_threadsv(name);
411caa50 1597 if (tmp != NOT_IN_PAD)
6224f72b 1598 return THREADSV(tmp);
6224f72b 1599 }
4d1ff10f 1600#endif /* USE_5005THREADS */
6224f72b
GS		 1601 gv = gv_fetchpv(name, create, SVt_PV);
1602 if (gv)
1603 return GvSV(gv);
1604 return Nullsv;
1605}
1606
954c1994
GS		 1607/*
1608=for apidoc p||get_av
1609
1610Returns the AV of the specified Perl array. If C<create> is set and the
1611Perl variable does not exist then it will be created. If C<create> is not
1612set and the variable does not exist then NULL is returned.
1613
1614=cut
1615*/
1616
6224f72b 1617AV*
864dbfa3 1618Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1619{
1620 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1621 if (create)
1622 return GvAVn(gv);
1623 if (gv)
1624 return GvAV(gv);
1625 return Nullav;
1626}
1627
954c1994
GS		 1628/*
1629=for apidoc p||get_hv
1630
1631Returns the HV of the specified Perl hash. If C<create> is set and the
1632Perl variable does not exist then it will be created. If C<create> is not
1633set and the variable does not exist then NULL is returned.
1634
1635=cut
1636*/
1637
6224f72b 1638HV*
864dbfa3 1639Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1640{
a0d0e21e
LW		 1641 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1642 if (create)
1643 return GvHVn(gv);
1644 if (gv)
1645 return GvHV(gv);
1646 return Nullhv;
1647}
1648
954c1994
GS		 1649/*
1650=for apidoc p||get_cv
1651
1652Returns the CV of the specified Perl subroutine. If C<create> is set and
1653the Perl subroutine does not exist then it will be declared (which has the
1654same effect as saying C<sub name;>). If C<create> is not set and the
1655subroutine does not exist then NULL is returned.
1656
1657=cut
1658*/
1659
a0d0e21e 1660CV*
864dbfa3 1661Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1662{
1663 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1664 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1665 /* XXX this is probably not what they think they're getting.
1666 * It has the same effect as "sub name;", i.e. just a forward
1667 * declaration! */
8ebc5c01 1668 if (create && !GvCVu(gv))
774d564b 1669 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1670 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1671 Nullop,
a0d0e21e
LW		 1672 Nullop);
1673 if (gv)
8ebc5c01 1674 return GvCVu(gv);
a0d0e21e
LW		 1675 return Nullcv;
1676}
1677
79072805
LW		 1678/* Be sure to refetch the stack pointer after calling these routines. */
1679
954c1994
GS		 1680/*
1681=for apidoc p||call_argv
1682
1683Performs a callback to the specified Perl sub. See L<perlcall>.
1684
1685=cut
1686*/
1687
a0d0e21e 1688I32
864dbfa3 1689Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1690
8ac85365
NIS		 1691 /* See G_* flags in cop.h */
1692 /* null terminated arg list */
8990e307 1693{
a0d0e21e 1694 dSP;
8990e307 1695
924508f0 1696 PUSHMARK(SP);
a0d0e21e 1697 if (argv) {
8990e307 1698 while (*argv) {
a0d0e21e 1699 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1700 argv++;
1701 }
a0d0e21e 1702 PUTBACK;
8990e307 1703 }
864dbfa3 1704 return call_pv(sub_name, flags);
8990e307
LW		 1705}
1706
954c1994
GS		 1707/*
1708=for apidoc p||call_pv
1709
1710Performs a callback to the specified Perl sub. See L<perlcall>.
1711
1712=cut
1713*/
1714
a0d0e21e 1715I32
864dbfa3 1716Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1717 /* name of the subroutine */
1718 /* See G_* flags in cop.h */
a0d0e21e 1719{
864dbfa3 1720 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1721}
1722
954c1994
GS		 1723/*
1724=for apidoc p||call_method
1725
1726Performs a callback to the specified Perl method. The blessed object must
1727be on the stack. See L<perlcall>.
1728
1729=cut
1730*/
1731
a0d0e21e 1732I32
864dbfa3 1733Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1734 /* name of the subroutine */
1735 /* See G_* flags in cop.h */
a0d0e21e 1736{
968b3946 1737 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1738}
1739
1740/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1741/*
1742=for apidoc p||call_sv
1743
1744Performs a callback to the Perl sub whose name is in the SV. See
1745L<perlcall>.
1746
1747=cut
1748*/
1749
a0d0e21e 1750I32
864dbfa3 1751Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1752 /* See G_* flags in cop.h */
a0d0e21e 1753{
924508f0 1754 dSP;
a0d0e21e 1755 LOGOP myop; /* fake syntax tree node */
968b3946 1756 UNOP method_op;
aa689395 1757 I32 oldmark;
13689cfe 1758 volatile I32 retval = 0;
a0d0e21e 1759 I32 oldscope;
54310121 1760 bool oldcatch = CATCH_GET;
6224f72b 1761 int ret;
533c011a 1762 OP* oldop = PL_op;
db36c5a1 1763 dJMPENV;
1e422769 1764
a0d0e21e
LW		 1765 if (flags & G_DISCARD) {
1766 ENTER;
1767 SAVETMPS;
1768 }
1769
aa689395 1770 Zero(&myop, 1, LOGOP);
54310121 1771 myop.op_next = Nullop;
f51d4af5 1772 if (!(flags & G_NOARGS))
aa689395 1773 myop.op_flags |= OPf_STACKED;
54310121 1774 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1775 (flags & G_ARRAY) ? OPf_WANT_LIST :
1776 OPf_WANT_SCALAR);
462e5cf6 1777 SAVEOP();
533c011a 1778 PL_op = (OP*)&myop;
aa689395 1779
3280af22
NIS		 1780 EXTEND(PL_stack_sp, 1);
1781 *++PL_stack_sp = sv;
aa689395 1782 oldmark = TOPMARK;
3280af22 1783 oldscope = PL_scopestack_ix;
a0d0e21e 1784
3280af22 1785 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1786 /* Handle first BEGIN of -d. */
3280af22 1787 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1788 /* Try harder, since this may have been a sighandler, thus
1789 * curstash may be meaningless. */
3280af22 1790 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1791 && !(flags & G_NODEBUG))
533c011a 1792 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1793
968b3946
GS		 1794 if (flags & G_METHOD) {
1795 Zero(&method_op, 1, UNOP);
1796 method_op.op_next = PL_op;
1797 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1798 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1799 PL_op = (OP*)&method_op;
968b3946
GS		 1800 }
1801
312caa8e 1802 if (!(flags & G_EVAL)) {
0cdb2077 1803 CATCH_SET(TRUE);
14dd3ad8 1804 call_body((OP*)&myop, FALSE);
312caa8e 1805 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1806 CATCH_SET(oldcatch);
312caa8e
CS		 1807 }
1808 else {
d78bda3d 1809 myop.op_other = (OP*)&myop;
3280af22 1810 PL_markstack_ptr--;
4633a7c4
LW		 1811 /* we're trying to emulate pp_entertry() here */
1812 {
c09156bb 1813 register PERL_CONTEXT *cx;
54310121 1814 I32 gimme = GIMME_V;
ac27b0f5 1815
4633a7c4
LW		 1816 ENTER;
1817 SAVETMPS;
ac27b0f5 1818
968b3946 1819 push_return(Nullop);
1d76a5c3 1820 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1821 PUSHEVAL(cx, 0, 0);
533c011a 1822 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1823
faef0170 1824 PL_in_eval = EVAL_INEVAL;
4633a7c4 1825 if (flags & G_KEEPERR)
faef0170 1826 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1827 else
38a03e6e 1828 sv_setpv(ERRSV,"");
4633a7c4 1829 }
3280af22 1830 PL_markstack_ptr++;
a0d0e21e 1831
14dd3ad8
GS		 1832#ifdef PERL_FLEXIBLE_EXCEPTIONS
1833 redo_body:
1834 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1835 (OP*)&myop, FALSE);
14dd3ad8
GS		 1836#else
1837 JMPENV_PUSH(ret);
1838#endif
6224f72b
GS		 1839 switch (ret) {
1840 case 0:
14dd3ad8
GS		 1841#ifndef PERL_FLEXIBLE_EXCEPTIONS
1842 redo_body:
1843 call_body((OP*)&myop, FALSE);
1844#endif
312caa8e
CS		 1845 retval = PL_stack_sp - (PL_stack_base + oldmark);
1846 if (!(flags & G_KEEPERR))
1847 sv_setpv(ERRSV,"");
a0d0e21e 1848 break;
6224f72b 1849 case 1:
f86702cc 1850 STATUS_ALL_FAILURE;
a0d0e21e 1851 /* FALL THROUGH */
6224f72b 1852 case 2:
a0d0e21e 1853 /* my_exit() was called */
3280af22 1854 PL_curstash = PL_defstash;
a0d0e21e 1855 FREETMPS;
14dd3ad8 1856 JMPENV_POP;
cc3604b1 1857 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1858 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1859 my_exit_jump();
a0d0e21e 1860 /* NOTREACHED */
6224f72b 1861 case 3:
3280af22 1862 if (PL_restartop) {
533c011a 1863 PL_op = PL_restartop;
3280af22 1864 PL_restartop = 0;
312caa8e 1865 goto redo_body;
a0d0e21e 1866 }
3280af22 1867 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1868 if (flags & G_ARRAY)
1869 retval = 0;
1870 else {
1871 retval = 1;
3280af22 1872 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1873 }
312caa8e 1874 break;
a0d0e21e 1875 }
a0d0e21e 1876
3280af22 1877 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1878 SV **newsp;
1879 PMOP *newpm;
1880 I32 gimme;
c09156bb 1881 register PERL_CONTEXT *cx;
a0a2876f
LW		 1882 I32 optype;
1883
1884 POPBLOCK(cx,newpm);
1885 POPEVAL(cx);
1886 pop_return();
3280af22 1887 PL_curpm = newpm;
a0a2876f 1888 LEAVE;
a0d0e21e 1889 }
14dd3ad8 1890 JMPENV_POP;
a0d0e21e 1891 }
1e422769 1892
a0d0e21e 1893 if (flags & G_DISCARD) {
3280af22 1894 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1895 retval = 0;
1896 FREETMPS;
1897 LEAVE;
1898 }
533c011a 1899 PL_op = oldop;
a0d0e21e
LW		 1900 return retval;
1901}
1902
14dd3ad8 1903#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1904STATIC void *
14dd3ad8 1905S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1906{
1907 OP *myop = va_arg(args, OP*);
1908 int is_eval = va_arg(args, int);
1909
14dd3ad8 1910 call_body(myop, is_eval);
312caa8e
CS		 1911 return NULL;
1912}
14dd3ad8 1913#endif
312caa8e
CS		 1914
1915STATIC void
14dd3ad8 1916S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1917{
312caa8e
CS		 1918 if (PL_op == myop) {
1919 if (is_eval)
f807eda9 1920 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1921 else
f807eda9 1922 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1923 }
1924 if (PL_op)
cea2e8a9 1925 CALLRUNOPS(aTHX);
312caa8e
CS		 1926}
1927
6e72f9df 1928/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1929
954c1994
GS		 1930/*
1931=for apidoc p||eval_sv
1932
1933Tells Perl to C<eval> the string in the SV.
1934
1935=cut
1936*/
1937
a0d0e21e 1938I32
864dbfa3 1939Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1940
8ac85365 1941 /* See G_* flags in cop.h */
a0d0e21e 1942{
924508f0 1943 dSP;
a0d0e21e 1944 UNOP myop; /* fake syntax tree node */
8fa7f367 1945 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1946 volatile I32 retval = 0;
4633a7c4 1947 I32 oldscope;
6224f72b 1948 int ret;
533c011a 1949 OP* oldop = PL_op;
db36c5a1 1950 dJMPENV;
84902520 1951
4633a7c4
LW		 1952 if (flags & G_DISCARD) {
1953 ENTER;
1954 SAVETMPS;
1955 }
1956
462e5cf6 1957 SAVEOP();
533c011a
NIS		 1958 PL_op = (OP*)&myop;
1959 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1960 EXTEND(PL_stack_sp, 1);
1961 *++PL_stack_sp = sv;
1962 oldscope = PL_scopestack_ix;
79072805 1963
4633a7c4
LW		 1964 if (!(flags & G_NOARGS))
1965 myop.op_flags = OPf_STACKED;
79072805 1966 myop.op_next = Nullop;
6e72f9df 1967 myop.op_type = OP_ENTEREVAL;
54310121 1968 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1969 (flags & G_ARRAY) ? OPf_WANT_LIST :
1970 OPf_WANT_SCALAR);
6e72f9df 1971 if (flags & G_KEEPERR)
1972 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1973
14dd3ad8 1974#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1975 redo_body:
14dd3ad8 1976 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1977 (OP*)&myop, TRUE);
14dd3ad8
GS		 1978#else
1979 JMPENV_PUSH(ret);
1980#endif
6224f72b
GS		 1981 switch (ret) {
1982 case 0:
14dd3ad8
GS		 1983#ifndef PERL_FLEXIBLE_EXCEPTIONS
1984 redo_body:
1985 call_body((OP*)&myop,TRUE);
1986#endif
312caa8e
CS		 1987 retval = PL_stack_sp - (PL_stack_base + oldmark);
1988 if (!(flags & G_KEEPERR))
1989 sv_setpv(ERRSV,"");
4633a7c4 1990 break;
6224f72b 1991 case 1:
f86702cc 1992 STATUS_ALL_FAILURE;
4633a7c4 1993 /* FALL THROUGH */
6224f72b 1994 case 2:
4633a7c4 1995 /* my_exit() was called */
3280af22 1996 PL_curstash = PL_defstash;
4633a7c4 1997 FREETMPS;
14dd3ad8 1998 JMPENV_POP;
cc3604b1 1999 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2000 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2001 my_exit_jump();
4633a7c4 2002 /* NOTREACHED */
6224f72b 2003 case 3:
3280af22 2004 if (PL_restartop) {
533c011a 2005 PL_op = PL_restartop;
3280af22 2006 PL_restartop = 0;
312caa8e 2007 goto redo_body;
4633a7c4 2008 }
3280af22 2009 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2010 if (flags & G_ARRAY)
2011 retval = 0;
2012 else {
2013 retval = 1;
3280af22 2014 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2015 }
312caa8e 2016 break;
4633a7c4
LW		 2017 }
2018
14dd3ad8 2019 JMPENV_POP;
4633a7c4 2020 if (flags & G_DISCARD) {
3280af22 2021 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2022 retval = 0;
2023 FREETMPS;
2024 LEAVE;
2025 }
533c011a 2026 PL_op = oldop;
4633a7c4
LW		 2027 return retval;
2028}
2029
954c1994
GS		 2030/*
2031=for apidoc p||eval_pv
2032
2033Tells Perl to C<eval> the given string and return an SV* result.
2034
2035=cut
2036*/
2037
137443ea 2038SV*
864dbfa3 2039Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2040{
2041 dSP;
2042 SV* sv = newSVpv(p, 0);
2043
864dbfa3 2044 eval_sv(sv, G_SCALAR);
137443ea 2045 SvREFCNT_dec(sv);
2046
2047 SPAGAIN;
2048 sv = POPs;
2049 PUTBACK;
2050
2d8e6c8d
GS		 2051 if (croak_on_error && SvTRUE(ERRSV)) {
2052 STRLEN n_a;
cea2e8a9 2053 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2054 }
137443ea 2055
2056 return sv;
2057}
2058
4633a7c4
LW		 2059/* Require a module. */
2060
954c1994
GS		 2061/*
2062=for apidoc p||require_pv
2063
7d3fb230
BS		 2064Tells Perl to C<require> the file named by the string argument. It is
2065analogous to the Perl code C<eval "require '$file'">. It's even
2066implemented that way; consider using Perl_load_module instead.
954c1994 2067
7d3fb230 2068=cut */
954c1994 2069
4633a7c4 2070void
864dbfa3 2071Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2072{
d3acc0f7
JP		 2073 SV* sv;
2074 dSP;
e788e7d3 2075 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2076 PUTBACK;
2077 sv = sv_newmortal();
4633a7c4
LW		 2078 sv_setpv(sv, "require '");
2079 sv_catpv(sv, pv);
2080 sv_catpv(sv, "'");
864dbfa3 2081 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2082 SPAGAIN;
2083 POPSTACK;
79072805
LW		 2084}
2085
79072805 2086void
864dbfa3 2087Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2088{
2089 register GV *gv;
2090
155aba94 2091 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2092 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2093}
2094
76e3520e 2095STATIC void
cea2e8a9 2096S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2097{
ab821d7f 2098 /* This message really ought to be max 23 lines.
75c72d73 2099 * Removed -h because the user already knows that option. Others? */
fb73857a 2100
76e3520e 2101 static char *usage_msg[] = {
fb73857a 2102"-0[octal] specify record separator (\\0, if no argument)",
2103"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2104"-C enable native wide character system interfaces",
1950ee41 2105"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2106"-d[:debugger] run program under debugger",
2107"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2108"-e 'command' one line of program (several -e's allowed, omit programfile)",
2109"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2110"-i[extension] edit <> files in place (makes backup if extension supplied)",
2111"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2112"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2113"-[mM][-]module execute `use/no module...' before executing program",
2114"-n assume 'while (<>) { ... }' loop around program",
2115"-p assume loop like -n but print line also, like sed",
2116"-P run program through C preprocessor before compilation",
2117"-s enable rudimentary parsing for switches after programfile",
2118"-S look for programfile using PATH environment variable",
2119"-T enable tainting checks",
2120"-u dump core after parsing program",
fb73857a 2121"-U allow unsafe operations",
aac3bd0d
GS		 2122"-v print version, subversion (includes VERY IMPORTANT perl info)",
2123"-V[:variable] print configuration summary (or a single Config.pm variable)",
2124"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2125"-W enable all warnings",
2126"-X disable all warnings",
fb73857a 2127"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2128"\n",
2129NULL
2130};
76e3520e 2131 char **p = usage_msg;
fb73857a 2132
b0e47665
GS		 2133 PerlIO_printf(PerlIO_stdout(),
2134 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2135 name);
fb73857a 2136 while (*p)
b0e47665 2137 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2138}
2139
79072805
LW		 2140/* This routine handles any switches that can be given during run */
2141
2142char *
864dbfa3 2143Perl_moreswitches(pTHX_ char *s)
79072805 2144{
ba210ebe 2145 STRLEN numlen;
c07a80fd 2146 U32 rschar;
79072805
LW		 2147
2148 switch (*s) {
2149 case '0':
a863c7d1 2150 {
53305cf1
NC		 2151 I32 flags = 0;
2152 numlen = 4;
2153 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2154 SvREFCNT_dec(PL_rs);
c07a80fd 2155 if (rschar & ~((U8)~0))
8bfdd7d9 2156 PL_rs = &PL_sv_undef;
c07a80fd 2157 else if (!rschar && numlen >= 2)
8bfdd7d9 2158 PL_rs = newSVpvn("", 0);
c07a80fd 2159 else {
2160 char ch = rschar;
8bfdd7d9 2161 PL_rs = newSVpvn(&ch, 1);
79072805
LW		 2162 }
2163 return s + numlen;
a863c7d1 2164 }
46487f74
GS		 2165 case 'C':
2166 PL_widesyscalls = TRUE;
2167 s++;
2168 return s;
2304df62 2169 case 'F':
3280af22
NIS		 2170 PL_minus_F = TRUE;
2171 PL_splitstr = savepv(s + 1);
2304df62
AD		 2172 s += strlen(s);
2173 return s;
79072805 2174 case 'a':
3280af22 2175 PL_minus_a = TRUE;
79072805
LW		 2176 s++;
2177 return s;
2178 case 'c':
3280af22 2179 PL_minus_c = TRUE;
79072805
LW		 2180 s++;
2181 return s;
2182 case 'd':
bbce6d69 2183 forbid_setid("-d");
4633a7c4 2184 s++;
70c94a19
RR		 2185 /* The following permits -d:Mod to accepts arguments following an =
2186 in the fashion that -MSome::Mod does. */
2187 if (*s == ':' || *s == '=') {
2188 char *start;
2189 SV *sv;
2190 sv = newSVpv("use Devel::", 0);
2191 start = ++s;
2192 /* We now allow -d:Module=Foo,Bar */
2193 while(isALNUM(*s) || *s==':') ++s;
2194 if (*s != '=')
2195 sv_catpv(sv, start);
2196 else {
2197 sv_catpvn(sv, start, s-start);
2198 sv_catpv(sv, " split(/,/,q{");
2199 sv_catpv(sv, ++s);
2200 sv_catpv(sv, "})");
2201 }
4633a7c4 2202 s += strlen(s);
70c94a19 2203 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2204 }
ed094faf 2205 if (!PL_perldb) {
3280af22 2206 PL_perldb = PERLDB_ALL;
a0d0e21e 2207 init_debugger();
ed094faf 2208 }
79072805
LW		 2209 return s;
2210 case 'D':
0453d815 2211 {
79072805 2212#ifdef DEBUGGING
bbce6d69 2213 forbid_setid("-D");
79072805 2214 if (isALPHA(s[1])) {
04932ac8
DM		 2215 /* if adding extra options, remember to update DEBUG_MASK */
2216 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2217 char *d;
2218
93a17b20 2219 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2220 PL_debug |= 1 << (d - debopts);
79072805
LW		 2221 }
2222 else {
3280af22 2223 PL_debug = atoi(s+1);
79072805
LW		 2224 for (s++; isDIGIT(*s); s++) ;
2225 }
aea4f609 2226 PL_debug |= DEBUG_TOP_FLAG;
79072805 2227#else
0453d815
PM		 2228 if (ckWARN_d(WARN_DEBUGGING))
2229 Perl_warner(aTHX_ WARN_DEBUGGING,
2230 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2231 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2232#endif
2233 /*SUPPRESS 530*/
2234 return s;
0453d815 2235 }
4633a7c4 2236 case 'h':
ac27b0f5 2237 usage(PL_origargv[0]);
6ad3d225 2238 PerlProc_exit(0);
79072805 2239 case 'i':
3280af22
NIS		 2240 if (PL_inplace)
2241 Safefree(PL_inplace);
2242 PL_inplace = savepv(s+1);
79072805 2243 /*SUPPRESS 530*/
3280af22 2244 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2245 if (*s) {
fb73857a 2246 *s++ = '\0';
7b8d334a
GS		 2247 if (*s == '-') /* Additional switches on #! line. */
2248 s++;
2249 }
fb73857a 2250 return s;
2251 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2252 forbid_setid("-I");
fb73857a 2253 ++s;
2254 while (*s && isSPACE(*s))
2255 ++s;
2256 if (*s) {
774d564b 2257 char *e, *p;
0df16ed7
GS		 2258 p = s;
2259 /* ignore trailing spaces (possibly followed by other switches) */
2260 do {
2261 for (e = p; *e && !isSPACE(*e); e++) ;
2262 p = e;
2263 while (isSPACE(*p))
2264 p++;
2265 } while (*p && *p != '-');
2266 e = savepvn(s, e-s);
9c8a64f0 2267 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2268 Safefree(e);
2269 s = p;
2270 if (*s == '-')
2271 s++;
79072805
LW		 2272 }
2273 else
a67e862a 2274 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2275 return s;
79072805 2276 case 'l':
3280af22 2277 PL_minus_l = TRUE;
79072805 2278 s++;
7889fe52
NIS		 2279 if (PL_ors_sv) {
2280 SvREFCNT_dec(PL_ors_sv);
2281 PL_ors_sv = Nullsv;
2282 }
79072805 2283 if (isDIGIT(*s)) {
53305cf1 2284 I32 flags = 0;
7889fe52 2285 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2286 numlen = 3 + (*s == '0');
2287 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2288 s += numlen;
2289 }
2290 else {
8bfdd7d9 2291 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2292 PL_ors_sv = newSVpvn("\n\n",2);
2293 }
2294 else {
8bfdd7d9 2295 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2296 }
79072805
LW		 2297 }
2298 return s;
1a30305b 2299 case 'M':
bbce6d69 2300 forbid_setid("-M"); /* XXX ? */
1a30305b 2301 /* FALL THROUGH */
2302 case 'm':
bbce6d69 2303 forbid_setid("-m"); /* XXX ? */
1a30305b 2304 if (*++s) {
a5f75d66 2305 char *start;
11343788 2306 SV *sv;
a5f75d66
AD		 2307 char *use = "use ";
2308 /* -M-foo == 'no foo' */
2309 if (*s == '-') { use = "no "; ++s; }
11343788 2310 sv = newSVpv(use,0);
a5f75d66 2311 start = s;
1a30305b 2312 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2313 while(isALNUM(*s) || *s==':') ++s;
2314 if (*s != '=') {
11343788 2315 sv_catpv(sv, start);
c07a80fd 2316 if (*(start-1) == 'm') {
2317 if (*s != '\0')
cea2e8a9 2318 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2319 sv_catpv( sv, " ()");
c07a80fd 2320 }
2321 } else {
6df41af2 2322 if (s == start)
be98fb35
GS		 2323 Perl_croak(aTHX_ "Module name required with -%c option",
2324 s[-1]);
11343788
MB		 2325 sv_catpvn(sv, start, s-start);
2326 sv_catpv(sv, " split(/,/,q{");
2327 sv_catpv(sv, ++s);
2328 sv_catpv(sv, "})");
c07a80fd 2329 }
1a30305b 2330 s += strlen(s);
5c831c24 2331 if (!PL_preambleav)
3280af22
NIS		 2332 PL_preambleav = newAV();
2333 av_push(PL_preambleav, sv);
1a30305b 2334 }
2335 else
cea2e8a9 2336 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2337 return s;
79072805 2338 case 'n':
3280af22 2339 PL_minus_n = TRUE;
79072805
LW		 2340 s++;
2341 return s;
2342 case 'p':
3280af22 2343 PL_minus_p = TRUE;
79072805
LW		 2344 s++;
2345 return s;
2346 case 's':
bbce6d69 2347 forbid_setid("-s");
3280af22 2348 PL_doswitches = TRUE;
79072805
LW		 2349 s++;
2350 return s;
463ee0b2 2351 case 'T':
3280af22 2352 if (!PL_tainting)
cea2e8a9 2353 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2354 s++;
2355 return s;
79072805 2356 case 'u':
bf4acbe4
GS		 2357#ifdef MACOS_TRADITIONAL
2358 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2359#endif
3280af22 2360 PL_do_undump = TRUE;
79072805
LW		 2361 s++;
2362 return s;
2363 case 'U':
3280af22 2364 PL_unsafe = TRUE;
79072805
LW		 2365 s++;
2366 return s;
2367 case 'v':
8e9464f1 2368#if !defined(DGUX)
b0e47665 2369 PerlIO_printf(PerlIO_stdout(),
d2560b70 2370 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2371 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2372#else /* DGUX */
2373/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2374 PerlIO_printf(PerlIO_stdout(),
2375 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2376 PerlIO_printf(PerlIO_stdout(),
2377 Perl_form(aTHX_ " built under %s at %s %s\n",
2378 OSNAME, __DATE__, __TIME__));
2379 PerlIO_printf(PerlIO_stdout(),
2380 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2381 OSVERS));
8e9464f1
JH		 2382#endif /* !DGUX */
2383
fb73857a 2384#if defined(LOCAL_PATCH_COUNT)
2385 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2386 PerlIO_printf(PerlIO_stdout(),
2387 "\n(with %d registered patch%s, "
2388 "see perl -V for more detail)",
2389 (int)LOCAL_PATCH_COUNT,
2390 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2391#endif
1a30305b 2392
b0e47665 2393 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2394 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2395#ifdef MACOS_TRADITIONAL
2396 PerlIO_printf(PerlIO_stdout(),
084592ab 2397 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2398#endif
79072805 2399#ifdef MSDOS
b0e47665
GS		 2400 PerlIO_printf(PerlIO_stdout(),
2401 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2402#endif
2403#ifdef DJGPP
b0e47665
GS		 2404 PerlIO_printf(PerlIO_stdout(),
2405 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2406 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2407#endif
79072805 2408#ifdef OS2
b0e47665
GS		 2409 PerlIO_printf(PerlIO_stdout(),
2410 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2411 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2412#endif
79072805 2413#ifdef atarist
b0e47665
GS		 2414 PerlIO_printf(PerlIO_stdout(),
2415 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2416#endif
a3f9223b 2417#ifdef __BEOS__
b0e47665
GS		 2418 PerlIO_printf(PerlIO_stdout(),
2419 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2420#endif
1d84e8df 2421#ifdef MPE
b0e47665 2422 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2423 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2424#endif
9d116dd7 2425#ifdef OEMVS
b0e47665
GS		 2426 PerlIO_printf(PerlIO_stdout(),
2427 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2428#endif
495c5fdc 2429#ifdef __VOS__
b0e47665
GS		 2430 PerlIO_printf(PerlIO_stdout(),
2431 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2432#endif
092bebab 2433#ifdef __OPEN_VM
b0e47665
GS		 2434 PerlIO_printf(PerlIO_stdout(),
2435 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2436#endif
a1a0e61e 2437#ifdef POSIX_BC
b0e47665
GS		 2438 PerlIO_printf(PerlIO_stdout(),
2439 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2440#endif
61ae2fbf 2441#ifdef __MINT__
b0e47665
GS		 2442 PerlIO_printf(PerlIO_stdout(),
2443 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2444#endif
f83d2536 2445#ifdef EPOC
b0e47665
GS		 2446 PerlIO_printf(PerlIO_stdout(),
2447 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2448#endif
e1caacb4
JH		 2449#ifdef UNDER_CE
2450 printf("WINCE port by Rainer Keuchel, 2001\n");
2451 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2452 wce_hitreturn();
2453#endif
baed7233
DL		 2454#ifdef BINARY_BUILD_NOTICE
2455 BINARY_BUILD_NOTICE;
2456#endif
b0e47665
GS		 2457 PerlIO_printf(PerlIO_stdout(),
2458 "\n\
79072805 2459Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2460GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2461Complete documentation for Perl, including FAQ lists, should be found on\n\
2462this system using `man perl' or `perldoc perl'. If you have access to the\n\
2463Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2464 PerlProc_exit(0);
79072805 2465 case 'w':
599cee73 2466 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2467 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2468 s++;
2469 return s;
2470 case 'W':
ac27b0f5 2471 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2472 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2473 s++;
2474 return s;
2475 case 'X':
ac27b0f5 2476 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2477 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2478 s++;
2479 return s;
a0d0e21e 2480 case '*':
79072805
LW		 2481 case ' ':
2482 if (s[1] == '-') /* Additional switches on #! line. */
2483 return s+2;
2484 break;
a0d0e21e 2485 case '-':
79072805 2486 case 0:
51882d45 2487#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2488 case '\r':
2489#endif
79072805
LW		 2490 case '\n':
2491 case '\t':
2492 break;
aa689395 2493#ifdef ALTERNATE_SHEBANG
2494 case 'S': /* OS/2 needs -S on "extproc" line. */
2495 break;
2496#endif
a0d0e21e 2497 case 'P':
3280af22 2498 if (PL_preprocess)
a0d0e21e
LW		 2499 return s+1;
2500 /* FALL THROUGH */
79072805 2501 default:
cea2e8a9 2502 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2503 }
2504 return Nullch;
2505}
2506
2507/* compliments of Tom Christiansen */
2508
2509/* unexec() can be found in the Gnu emacs distribution */
ee580363 2510/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2511
2512void
864dbfa3 2513Perl_my_unexec(pTHX)
79072805
LW		 2514{
2515#ifdef UNEXEC
46fc3d4c 2516 SV* prog;
2517 SV* file;
ee580363 2518 int status = 1;
79072805
LW		 2519 extern int etext;
2520
ee580363 2521 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2522 sv_catpv(prog, "/perl");
6b88bc9c 2523 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2524 sv_catpv(file, ".perldump");
79072805 2525
ee580363
GS		 2526 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2527 /* unexec prints msg to stderr in case of failure */
6ad3d225 2528 PerlProc_exit(status);
79072805 2529#else
a5f75d66
AD		 2530# ifdef VMS
2531# include <lib$routines.h>
2532 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2533# else
79072805 2534 ABORT(); /* for use with undump */
aa689395 2535# endif
a5f75d66 2536#endif
79072805
LW		 2537}
2538
cb68f92d
GS		 2539/* initialize curinterp */
2540STATIC void
cea2e8a9 2541S_init_interp(pTHX)
cb68f92d
GS		 2542{
2543
acfe0abc
GS		 2544#ifdef MULTIPLICITY
2545# define PERLVAR(var,type)
2546# define PERLVARA(var,n,type)
2547# if defined(PERL_IMPLICIT_CONTEXT)
2548# if defined(USE_5005THREADS)
2549# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2550# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2551# else /* !USE_5005THREADS */
2552# define PERLVARI(var,type,init) aTHX->var = init;
2553# define PERLVARIC(var,type,init) aTHX->var = init;
2554# endif /* USE_5005THREADS */
3967c732 2555# else
acfe0abc
GS		 2556# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2557# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2558# endif
acfe0abc
GS		 2559# include "intrpvar.h"
2560# ifndef USE_5005THREADS
2561# include "thrdvar.h"
2562# endif
2563# undef PERLVAR
2564# undef PERLVARA
2565# undef PERLVARI
2566# undef PERLVARIC
2567#else
2568# define PERLVAR(var,type)
2569# define PERLVARA(var,n,type)
2570# define PERLVARI(var,type,init) PL_##var = init;
2571# define PERLVARIC(var,type,init) PL_##var = init;
2572# include "intrpvar.h"
2573# ifndef USE_5005THREADS
2574# include "thrdvar.h"
2575# endif
2576# undef PERLVAR
2577# undef PERLVARA
2578# undef PERLVARI
2579# undef PERLVARIC
cb68f92d
GS		 2580#endif
2581
cb68f92d
GS		 2582}
2583
76e3520e 2584STATIC void
cea2e8a9 2585S_init_main_stash(pTHX)
79072805 2586{
463ee0b2 2587 GV *gv;
6e72f9df 2588
2589 /* Note that strtab is a rather special HV. Assumptions are made
2590 about not iterating on it, and not adding tie magic to it.
2591 It is properly deallocated in perl_destruct() */
3280af22 2592 PL_strtab = newHV();
4d1ff10f 2593#ifdef USE_5005THREADS
5f08fbcd
GS		 2594 MUTEX_INIT(&PL_strtab_mutex);
2595#endif
3280af22
NIS		 2596 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2597 hv_ksplit(PL_strtab, 512);
ac27b0f5 2598
3280af22 2599 PL_curstash = PL_defstash = newHV();
79cb57f6 2600 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2601 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2602 SvREFCNT_dec(GvHV(gv));
3280af22 2603 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2604 SvREADONLY_on(gv);
3280af22
NIS		 2605 HvNAME(PL_defstash) = savepv("main");
2606 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2607 GvMULTI_on(PL_incgv);
2608 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2609 GvMULTI_on(PL_hintgv);
2610 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2611 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2612 GvMULTI_on(PL_errgv);
2613 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2614 GvMULTI_on(PL_replgv);
cea2e8a9 2615 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2616 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2617 sv_setpvn(ERRSV, "", 0);
3280af22 2618 PL_curstash = PL_defstash;
11faa288 2619 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2620 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2621 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2622 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2623 /* We must init $/ before switches are processed. */
864dbfa3 2624 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2625}
2626
76e3520e 2627STATIC void
cea2e8a9 2628S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2629{
6c4ab083 2630 *fdscript = -1;
79072805 2631
3280af22
NIS		 2632 if (PL_e_script) {
2633 PL_origfilename = savepv("-e");
96436eeb 2634 }
6c4ab083
GS		 2635 else {
2636 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2637 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2638
2639 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2640 char *s = scriptname + 8;
2641 *fdscript = atoi(s);
2642 while (isDIGIT(*s))
2643 s++;
2644 if (*s) {
2645 scriptname = savepv(s + 1);
3280af22
NIS		 2646 Safefree(PL_origfilename);
2647 PL_origfilename = scriptname;
6c4ab083
GS		 2648 }
2649 }
2650 }
2651
f4dd75d9
GS		 2652#ifdef USE_ITHREADS
2653 Safefree(CopFILE(PL_curcop));
2654#else
2655 SvREFCNT_dec(CopFILEGV(PL_curcop));
2656#endif
57843af0 2657 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2658 if (strEQ(PL_origfilename,"-"))
79072805 2659 scriptname = "";
01f988be 2660 if (*fdscript >= 0) {
3280af22 2661 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2662#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2663 if (PL_rsfp)
2664 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2665#endif
2666 }
3280af22 2667 else if (PL_preprocess) {
46fc3d4c 2668 char *cpp_cfg = CPPSTDIN;
79cb57f6 2669 SV *cpp = newSVpvn("",0);
46fc3d4c 2670 SV *cmd = NEWSV(0,0);
2671
2672 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2673 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2674 sv_catpv(cpp, cpp_cfg);
79072805 2675
0df16ed7 2676 sv_catpvn(sv, "-I", 2);
fed7345c 2677 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2678
14953ddc
MB		 2679 DEBUG_P(PerlIO_printf(Perl_debug_log,
2680 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2681 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2682#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2683 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2684sed %s -e \"/^[^#]/b\" \
2685 -e \"/^#[ ]*include[ ]/b\" \
2686 -e \"/^#[ ]*define[ ]/b\" \
2687 -e \"/^#[ ]*if[ ]/b\" \
2688 -e \"/^#[ ]*ifdef[ ]/b\" \
2689 -e \"/^#[ ]*ifndef[ ]/b\" \
2690 -e \"/^#[ ]*else/b\" \
2691 -e \"/^#[ ]*elif[ ]/b\" \
2692 -e \"/^#[ ]*undef[ ]/b\" \
2693 -e \"/^#[ ]*endif/b\" \
2694 -e \"s/^#.*//\" \
894356b3 2695 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2696 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2697#else
092bebab 2698# ifdef __OPEN_VM
cea2e8a9 2699 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2700%s %s -e '/^[^#]/b' \
2701 -e '/^#[ ]*include[ ]/b' \
2702 -e '/^#[ ]*define[ ]/b' \
2703 -e '/^#[ ]*if[ ]/b' \
2704 -e '/^#[ ]*ifdef[ ]/b' \
2705 -e '/^#[ ]*ifndef[ ]/b' \
2706 -e '/^#[ ]*else/b' \
2707 -e '/^#[ ]*elif[ ]/b' \
2708 -e '/^#[ ]*undef[ ]/b' \
2709 -e '/^#[ ]*endif/b' \
2710 -e 's/^[ ]*#.*//' \
894356b3 2711 %s | %"SVf" %"SVf" %s",
092bebab 2712# else
cea2e8a9 2713 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2714%s %s -e '/^[^#]/b' \
2715 -e '/^#[ ]*include[ ]/b' \
2716 -e '/^#[ ]*define[ ]/b' \
2717 -e '/^#[ ]*if[ ]/b' \
2718 -e '/^#[ ]*ifdef[ ]/b' \
2719 -e '/^#[ ]*ifndef[ ]/b' \
2720 -e '/^#[ ]*else/b' \
2721 -e '/^#[ ]*elif[ ]/b' \
2722 -e '/^#[ ]*undef[ ]/b' \
2723 -e '/^#[ ]*endif/b' \
2724 -e 's/^[ ]*#.*//' \
894356b3 2725 %s | %"SVf" -C %"SVf" %s",
092bebab 2726# endif
79072805
LW		 2727#ifdef LOC_SED
2728 LOC_SED,
2729#else
2730 "sed",
2731#endif
3280af22 2732 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2733#endif
46fc3d4c 2734 scriptname, cpp, sv, CPPMINUS);
3280af22 2735 PL_doextract = FALSE;
79072805 2736#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2737 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2738#ifdef HAS_SETEUID
b28d0864 2739 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2740#else
2741#ifdef HAS_SETREUID
b28d0864 2742 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2743#else
2744#ifdef HAS_SETRESUID
b28d0864 2745 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2746#else
b28d0864 2747 PerlProc_setuid(PL_uid);
79072805
LW		 2748#endif
2749#endif
85e6fe83 2750#endif
b28d0864 2751 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2752 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2753 }
2754#endif /* IAMSUID */
3280af22 2755 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2756 SvREFCNT_dec(cmd);
2757 SvREFCNT_dec(cpp);
79072805
LW		 2758 }
2759 else if (!*scriptname) {
bbce6d69 2760 forbid_setid("program input from stdin");
3280af22 2761 PL_rsfp = PerlIO_stdin();
79072805 2762 }
96436eeb 2763 else {
3280af22 2764 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2765#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2766 if (PL_rsfp)
2767 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2768#endif
2769 }
3280af22 2770 if (!PL_rsfp) {
13281fa4 2771#ifdef DOSUID
a687059c 2772#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2773 if (PL_euid &&
cc49e20b 2774 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2775 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2776 {
46fc3d4c 2777 /* try again */
a7cb1f99 2778 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2779 (int)PERL_REVISION, (int)PERL_VERSION,
2780 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2781 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2782 }
2783#endif
2784#endif
584d69ec
JH		 2785#ifdef IAMSUID
2786 errno = EPERM;
2787 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2788 Strerror(errno));
2789#else
cea2e8a9 2790 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2791 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2792#endif
13281fa4 2793 }
79072805 2794}
8d063cd8 2795
7b89560d
JH		 2796/* Mention
2797 * I_SYSSTATVFS HAS_FSTATVFS
2798 * I_SYSMOUNT
c890dc6c 2799 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2800 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2801 * here so that metaconfig picks them up. */
2802
104d25b7 2803#ifdef IAMSUID
864dbfa3 2804STATIC int
e688b231 2805S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2806{
0545a864
JH		 2807 int check_okay = 0; /* able to do all the required sys/libcalls */
2808 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2809/*
ad27e871 2810 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2811 * fstatvfs() is UNIX98.
0545a864 2812 * fstatfs() is 4.3 BSD.
ad27e871 2813 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2814 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2815 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2816 */
2817
6439433f
JH		 2818#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2819
2820# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2821 defined(HAS_FSTATVFS)
2822# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2823 struct statvfs stfs;
6439433f 2824
104d25b7
JH		 2825 check_okay = fstatvfs(fd, &stfs) == 0;
2826 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2827# endif /* fstatvfs */
ac27b0f5 2828
6439433f
JH		 2829# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2830 defined(PERL_MOUNT_NOSUID) && \
2831 defined(HAS_FSTATFS) && \
2832 defined(HAS_STRUCT_STATFS) && \
2833 defined(HAS_STRUCT_STATFS_F_FLAGS)
2834# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2835 struct statfs stfs;
6439433f 2836
104d25b7 2837 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2838 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2839# endif /* fstatfs */
2840
2841# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2842 defined(PERL_MOUNT_NOSUID) && \
2843 defined(HAS_FSTAT) && \
2844 defined(HAS_USTAT) && \
2845 defined(HAS_GETMNT) && \
2846 defined(HAS_STRUCT_FS_DATA) && \
2847 defined(NOSTAT_ONE)
2848# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2849 struct stat fdst;
6439433f 2850
0545a864 2851 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2852 struct ustat us;
2853 if (ustat(fdst.st_dev, &us) == 0) {
2854 struct fs_data fsd;
2855 /* NOSTAT_ONE here because we're not examining fields which
2856 * vary between that case and STAT_ONE. */
ad27e871 2857 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2858 size_t cmplen = sizeof(us.f_fname);
2859 if (sizeof(fsd.fd_req.path) < cmplen)
2860 cmplen = sizeof(fsd.fd_req.path);
2861 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2862 fdst.st_dev == fsd.fd_req.dev) {
2863 check_okay = 1;
2864 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2865 }
2866 }
2867 }
2868 }
0545a864 2869 }
6439433f
JH		 2870# endif /* fstat+ustat+getmnt */
2871
2872# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2873 defined(HAS_GETMNTENT) && \
2874 defined(HAS_HASMNTOPT) && \
2875 defined(MNTOPT_NOSUID)
2876# define FD_ON_NOSUID_CHECK_OKAY
2877 FILE *mtab = fopen("/etc/mtab", "r");
2878 struct mntent *entry;
2879 struct stat stb, fsb;
104d25b7
JH		 2880
2881 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2882 while (entry = getmntent(mtab)) {
2883 if (stat(entry->mnt_dir, &fsb) == 0
2884 && fsb.st_dev == stb.st_dev)
2885 {
2886 /* found the filesystem */
2887 check_okay = 1;
2888 if (hasmntopt(entry, MNTOPT_NOSUID))
2889 on_nosuid = 1;
2890 break;
2891 } /* A single fs may well fail its stat(). */
2892 }
104d25b7
JH		 2893 }
2894 if (mtab)
6439433f
JH		 2895 fclose(mtab);
2896# endif /* getmntent+hasmntopt */
0545a864 2897
ac27b0f5 2898 if (!check_okay)
0545a864 2899 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2900 return on_nosuid;
2901}
2902#endif /* IAMSUID */
2903
76e3520e 2904STATIC void
cea2e8a9 2905S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2906{
155aba94 2907#ifdef IAMSUID
96436eeb 2908 int which;
155aba94 2909#endif
96436eeb 2910
13281fa4
LW		 2911 /* do we need to emulate setuid on scripts? */
2912
2913 /* This code is for those BSD systems that have setuid #! scripts disabled
2914 * in the kernel because of a security problem. Merely defining DOSUID
2915 * in perl will not fix that problem, but if you have disabled setuid
2916 * scripts in the kernel, this will attempt to emulate setuid and setgid
2917 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2918 * root version must be called suidperl or sperlN.NNN. If regular perl
2919 * discovers that it has opened a setuid script, it calls suidperl with
2920 * the same argv that it had. If suidperl finds that the script it has
2921 * just opened is NOT setuid root, it sets the effective uid back to the
2922 * uid. We don't just make perl setuid root because that loses the
2923 * effective uid we had before invoking perl, if it was different from the
2924 * uid.
13281fa4
LW		 2925 *
2926 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2927 * be defined in suidperl only. suidperl must be setuid root. The
2928 * Configure script will set this up for you if you want it.
2929 */
a687059c 2930
13281fa4 2931#ifdef DOSUID
6e72f9df 2932 char *s, *s2;
a0d0e21e 2933
b28d0864 2934 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2935 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2936 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2937 I32 len;
2d8e6c8d 2938 STRLEN n_a;
13281fa4 2939
a687059c 2940#ifdef IAMSUID
fe14fcc3 2941#ifndef HAS_SETREUID
a687059c
LW		 2942 /* On this access check to make sure the directories are readable,
2943 * there is actually a small window that the user could use to make
2944 * filename point to an accessible directory. So there is a faint
2945 * chance that someone could execute a setuid script down in a
2946 * non-accessible directory. I don't know what to do about that.
2947 * But I don't think it's too important. The manual lies when
2948 * it says access() is useful in setuid programs.
2949 */
cc49e20b 2950 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2951 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2952#else
2953 /* If we can swap euid and uid, then we can determine access rights
2954 * with a simple stat of the file, and then compare device and
2955 * inode to make sure we did stat() on the same file we opened.
2956 * Then we just have to make sure he or she can execute it.
2957 */
2958 {
2959 struct stat tmpstatbuf;
2960
85e6fe83
LW		 2961 if (
2962#ifdef HAS_SETREUID
b28d0864 2963 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2964#else
2965# if HAS_SETRESUID
b28d0864 2966 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2967# endif
85e6fe83 2968#endif
b28d0864 2969 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2970 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2971 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2972 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2973#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2974 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2975 Perl_croak(aTHX_ "Permission denied");
104d25b7 2976#endif
b28d0864
NIS		 2977 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2978 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2979 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2980 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2981 }
85e6fe83
LW		 2982 if (
2983#ifdef HAS_SETREUID
b28d0864 2984 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2985#else
2986# if defined(HAS_SETRESUID)
b28d0864 2987 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2988# endif
85e6fe83 2989#endif
b28d0864 2990 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2991 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2992 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2993 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2994 }
fe14fcc3 2995#endif /* HAS_SETREUID */
a687059c
LW		 2996#endif /* IAMSUID */
2997
b28d0864 2998 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2999 Perl_croak(aTHX_ "Permission denied");
b28d0864 3000 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3001 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3002 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3003 CopLINE_inc(PL_curcop);
6b88bc9c 3004 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3005 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3006 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3007 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3008 if (*s == ' ') s++;
45d8adaa 3009 while (!isSPACE(*s)) s++;
2d8e6c8d 3010 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3011 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3012 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3013 Perl_croak(aTHX_ "Not a perl script");
a687059c 3014 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3015 /*
3016 * #! arg must be what we saw above. They can invoke it by
3017 * mentioning suidperl explicitly, but they may not add any strange
3018 * arguments beyond what #! says if they do invoke suidperl that way.
3019 */
3020 len = strlen(validarg);
3021 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3022 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3023 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3024
3025#ifndef IAMSUID
b28d0864
NIS		 3026 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3027 PL_euid == PL_statbuf.st_uid)
3028 if (!PL_do_undump)
cea2e8a9 3029 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3030FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3031#endif /* IAMSUID */
13281fa4 3032
b28d0864
NIS		 3033 if (PL_euid) { /* oops, we're not the setuid root perl */
3034 (void)PerlIO_close(PL_rsfp);
13281fa4 3035#ifndef IAMSUID
46fc3d4c 3036 /* try again */
a7cb1f99 3037 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3038 (int)PERL_REVISION, (int)PERL_VERSION,
3039 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3040#endif
cea2e8a9 3041 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3042 }
3043
b28d0864 3044 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3045#ifdef HAS_SETEGID
b28d0864 3046 (void)setegid(PL_statbuf.st_gid);
a687059c 3047#else
fe14fcc3 3048#ifdef HAS_SETREGID
b28d0864 3049 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3050#else
3051#ifdef HAS_SETRESGID
b28d0864 3052 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3053#else
b28d0864 3054 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3055#endif
3056#endif
85e6fe83 3057#endif
b28d0864 3058 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3059 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3060 }
b28d0864
NIS		 3061 if (PL_statbuf.st_mode & S_ISUID) {
3062 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3063#ifdef HAS_SETEUID
b28d0864 3064 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3065#else
fe14fcc3 3066#ifdef HAS_SETREUID
b28d0864 3067 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3068#else
3069#ifdef HAS_SETRESUID
b28d0864 3070 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3071#else
b28d0864 3072 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3073#endif
3074#endif
85e6fe83 3075#endif
b28d0864 3076 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3077 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3078 }
b28d0864 3079 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3080#ifdef HAS_SETEUID
b28d0864 3081 (void)seteuid((Uid_t)PL_uid);
a687059c 3082#else
fe14fcc3 3083#ifdef HAS_SETREUID
b28d0864 3084 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3085#else
85e6fe83 3086#ifdef HAS_SETRESUID
b28d0864 3087 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3088#else
b28d0864 3089 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3090#endif
a687059c
LW		 3091#endif
3092#endif
b28d0864 3093 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3094 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3095 }
748a9306 3096 init_ids();
b28d0864 3097 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3098 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3099 }
3100#ifdef IAMSUID
6b88bc9c 3101 else if (PL_preprocess)
cea2e8a9 3102 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3103 else if (fdscript >= 0)
cea2e8a9 3104 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3105 else
cea2e8a9 3106 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3107
3108 /* We absolutely must clear out any saved ids here, so we */
3109 /* exec the real perl, substituting fd script for scriptname. */
3110 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3111 PerlIO_rewind(PL_rsfp);
3112 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3113 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3114 if (!PL_origargv[which])
cea2e8a9
GS		 3115 Perl_croak(aTHX_ "Permission denied");
3116 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3117 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3118#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3119 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3120#endif
a7cb1f99 3121 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3122 (int)PERL_REVISION, (int)PERL_VERSION,
3123 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3124 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3125#endif /* IAMSUID */
a687059c 3126#else /* !DOSUID */
3280af22 3127 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3128#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3129 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3130 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3131 ||
b28d0864 3132 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3133 )
b28d0864 3134 if (!PL_do_undump)
cea2e8a9 3135 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3136FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3137#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3138 /* not set-id, must be wrapped */
a687059c 3139 }
13281fa4 3140#endif /* DOSUID */
79072805 3141}
13281fa4 3142
76e3520e 3143STATIC void
cea2e8a9 3144S_find_beginning(pTHX)
79072805 3145{
6e72f9df 3146 register char *s, *s2;
33b78306
LW		 3147
3148 /* skip forward in input to the real script? */
3149
bbce6d69 3150 forbid_setid("-x");
bf4acbe4 3151#ifdef MACOS_TRADITIONAL
084592ab 3152 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3153
bf4acbe4
GS		 3154 while (PL_doextract || gMacPerl_AlwaysExtract) {
3155 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3156 if (!gMacPerl_AlwaysExtract)
3157 Perl_croak(aTHX_ "No Perl script found in input\n");
3158
3159 if (PL_doextract) /* require explicit override ? */
3160 if (!OverrideExtract(PL_origfilename))
3161 Perl_croak(aTHX_ "User aborted script\n");
3162 else
3163 PL_doextract = FALSE;
3164
3165 /* Pater peccavi, file does not have #! */
3166 PerlIO_rewind(PL_rsfp);
ac27b0f5 3167
bf4acbe4
GS		 3168 break;
3169 }
3170#else
3280af22
NIS		 3171 while (PL_doextract) {
3172 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3173 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3174#endif
4f0c37ba
IZ		 3175 s2 = s;
3176 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3177 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3178 PL_doextract = FALSE;
6e72f9df 3179 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3180 s2 = s;
3181 while (*s == ' ' || *s == '\t') s++;
3182 if (*s++ == '-') {
3183 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3184 if (strnEQ(s2-4,"perl",4))
3185 /*SUPPRESS 530*/
155aba94
GS		 3186 while ((s = moreswitches(s)))
3187 ;
33b78306 3188 }
95e8664e
CN		 3189#ifdef MACOS_TRADITIONAL
3190 break;
3191#endif
83025b21
LW		 3192 }
3193 }
3194}
3195
afe37c7d 3196
76e3520e 3197STATIC void
cea2e8a9 3198S_init_ids(pTHX)
352d5a3a 3199{
d8eceb89
JH		 3200 PL_uid = PerlProc_getuid();
3201 PL_euid = PerlProc_geteuid();
3202 PL_gid = PerlProc_getgid();
3203 PL_egid = PerlProc_getegid();
748a9306 3204#ifdef VMS
b28d0864
NIS		 3205 PL_uid |= PL_gid << 16;
3206 PL_euid |= PL_egid << 16;
748a9306 3207#endif
3280af22 3208 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3209}
79072805 3210
76e3520e 3211STATIC void
cea2e8a9 3212S_forbid_setid(pTHX_ char *s)
bbce6d69 3213{
3280af22 3214 if (PL_euid != PL_uid)
cea2e8a9 3215 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3216 if (PL_egid != PL_gid)
cea2e8a9 3217 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3218}
3219
1ee4443e
IZ		 3220void
3221Perl_init_debugger(pTHX)
748a9306 3222{
1ee4443e
IZ		 3223 HV *ostash = PL_curstash;
3224
3280af22
NIS		 3225 PL_curstash = PL_debstash;
3226 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3227 AvREAL_off(PL_dbargs);
3228 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3229 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3230 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3231 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3232 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3233 sv_setiv(PL_DBsingle, 0);
3280af22 3234 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3235 sv_setiv(PL_DBtrace, 0);
3280af22 3236 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3237 sv_setiv(PL_DBsignal, 0);
1ee4443e 3238 PL_curstash = ostash;
352d5a3a
LW		 3239}
3240
2ce36478
SM		 3241#ifndef STRESS_REALLOC
3242#define REASONABLE(size) (size)
3243#else
3244#define REASONABLE(size) (1) /* unreasonable */
3245#endif
3246
11343788 3247void
cea2e8a9 3248Perl_init_stacks(pTHX)
79072805 3249{
e336de0d 3250 /* start with 128-item stack and 8K cxstack */
3280af22 3251 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3252 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3253 PL_curstackinfo->si_type = PERLSI_MAIN;
3254 PL_curstack = PL_curstackinfo->si_stack;
3255 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3256
3280af22
NIS		 3257 PL_stack_base = AvARRAY(PL_curstack);
3258 PL_stack_sp = PL_stack_base;
3259 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3260
3280af22
NIS		 3261 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3262 PL_tmps_floor = -1;
3263 PL_tmps_ix = -1;
3264 PL_tmps_max = REASONABLE(128);
8990e307 3265
3280af22
NIS		 3266 New(54,PL_markstack,REASONABLE(32),I32);
3267 PL_markstack_ptr = PL_markstack;
3268 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3269
ce2f7c3b 3270 SET_MARK_OFFSET;
e336de0d 3271
3280af22
NIS		 3272 New(54,PL_scopestack,REASONABLE(32),I32);
3273 PL_scopestack_ix = 0;
3274 PL_scopestack_max = REASONABLE(32);
79072805 3275
3280af22
NIS		 3276 New(54,PL_savestack,REASONABLE(128),ANY);
3277 PL_savestack_ix = 0;
3278 PL_savestack_max = REASONABLE(128);
79072805 3279
3280af22
NIS		 3280 New(54,PL_retstack,REASONABLE(16),OP*);
3281 PL_retstack_ix = 0;
3282 PL_retstack_max = REASONABLE(16);
378cc40b 3283}
33b78306 3284
2ce36478
SM		 3285#undef REASONABLE
3286
76e3520e 3287STATIC void
cea2e8a9 3288S_nuke_stacks(pTHX)
6e72f9df 3289{
3280af22
NIS		 3290 while (PL_curstackinfo->si_next)
3291 PL_curstackinfo = PL_curstackinfo->si_next;
3292 while (PL_curstackinfo) {
3293 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3294 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3295 Safefree(PL_curstackinfo->si_cxstack);
3296 Safefree(PL_curstackinfo);
3297 PL_curstackinfo = p;
e336de0d 3298 }
3280af22
NIS		 3299 Safefree(PL_tmps_stack);
3300 Safefree(PL_markstack);
3301 Safefree(PL_scopestack);
3302 Safefree(PL_savestack);
3303 Safefree(PL_retstack);
378cc40b 3304}
33b78306 3305
76e3520e 3306STATIC void
cea2e8a9 3307S_init_lexer(pTHX)
8990e307 3308{
06039172 3309 PerlIO *tmpfp;
3280af22
NIS		 3310 tmpfp = PL_rsfp;
3311 PL_rsfp = Nullfp;
3312 lex_start(PL_linestr);
3313 PL_rsfp = tmpfp;
79cb57f6 3314 PL_subname = newSVpvn("main",4);
8990e307
LW		 3315}
3316
76e3520e 3317STATIC void
cea2e8a9 3318S_init_predump_symbols(pTHX)
45d8adaa 3319{
93a17b20 3320 GV *tmpgv;
af8c498a 3321 IO *io;
79072805 3322
864dbfa3 3323 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3324 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3325 GvMULTI_on(PL_stdingv);
af8c498a 3326 io = GvIOp(PL_stdingv);
a04651f4 3327 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3328 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3329 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3330 GvMULTI_on(tmpgv);
af8c498a 3331 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3332
85e6fe83 3333 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3334 GvMULTI_on(tmpgv);
af8c498a 3335 io = GvIOp(tmpgv);
a04651f4 3336 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3337 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3338 setdefout(tmpgv);
adbc6bb1 3339 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3340 GvMULTI_on(tmpgv);
af8c498a 3341 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3342
bf49b057
GS		 3343 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3344 GvMULTI_on(PL_stderrgv);
3345 io = GvIOp(PL_stderrgv);
a04651f4 3346 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3347 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3348 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3349 GvMULTI_on(tmpgv);
af8c498a 3350 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3351
3280af22 3352 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3353
bf4acbe4
GS		 3354 if (PL_osname)
3355 Safefree(PL_osname);
3356 PL_osname = savepv(OSNAME);
79072805 3357}
33b78306 3358
76e3520e 3359STATIC void
cea2e8a9 3360S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3361{
79072805
LW		 3362 char *s;
3363 SV *sv;
3364 GV* tmpgv;
9cbac4c7 3365#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3366 char **dup_env_base = 0;
103a7189 3367 int dup_env_count = 0;
9cbac4c7 3368#endif
fe14fcc3 3369
79072805 3370 argc--,argv++; /* skip name of script */
3280af22 3371 if (PL_doswitches) {
79072805
LW		 3372 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3373 if (!argv[0][1])
3374 break;
379d538a 3375 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3376 argc--,argv++;
3377 break;
3378 }
155aba94 3379 if ((s = strchr(argv[0], '='))) {
79072805 3380 *s++ = '\0';
85e6fe83 3381 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3382 }
3383 else
85e6fe83 3384 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3385 }
79072805 3386 }
3280af22
NIS		 3387 PL_toptarget = NEWSV(0,0);
3388 sv_upgrade(PL_toptarget, SVt_PVFM);
3389 sv_setpvn(PL_toptarget, "", 0);
3390 PL_bodytarget = NEWSV(0,0);
3391 sv_upgrade(PL_bodytarget, SVt_PVFM);
3392 sv_setpvn(PL_bodytarget, "", 0);
3393 PL_formtarget = PL_bodytarget;
79072805 3394
bbce6d69 3395 TAINT;
155aba94 3396 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3397#ifdef MACOS_TRADITIONAL
3398 /* $0 is not majick on a Mac */
3399 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3400#else
3280af22 3401 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3402 magicname("0", "0", 1);
bf4acbe4 3403#endif
79072805 3404 }
155aba94 3405 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3406#ifdef OS2
23da6c43 3407 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3408#else
3280af22 3409 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3410#endif
155aba94 3411 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3412 GvMULTI_on(PL_argvgv);
3413 (void)gv_AVadd(PL_argvgv);
3414 av_clear(GvAVn(PL_argvgv));
79072805 3415 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3416 SV *sv = newSVpv(argv[0],0);
3417 av_push(GvAVn(PL_argvgv),sv);
3418 if (PL_widesyscalls)
e84ff256 3419 (void)sv_utf8_decode(sv);
79072805
LW		 3420 }
3421 }
155aba94 3422 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3423 HV *hv;
3280af22
NIS		 3424 GvMULTI_on(PL_envgv);
3425 hv = GvHVn(PL_envgv);
14befaf4 3426 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3427#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3428 /* Note that if the supplied env parameter is actually a copy
3429 of the global environ then it may now point to free'd memory
3430 if the environment has been modified since. To avoid this
3431 problem we treat env==NULL as meaning 'use the default'
3432 */
3433 if (!env)
3434 env = environ;
5aabfad6 3435 if (env != environ)
79072805 3436 environ[0] = Nullch;
103a7189
JH		 3437#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3438 {
3439 char **env_base;
9041c2e3 3440 for (env_base = env; *env; env++)
103a7189
JH		 3441 dup_env_count++;
3442 if ((dup_env_base = (char **)
480bfd1e 3443 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3444 char **dup_env;
3445 for (env = env_base, dup_env = dup_env_base;
3446 *env;
480bfd1e
JH		 3447 env++, dup_env++) {
3448 /* With environ one needs to use safesysmalloc(). */
3449 *dup_env = safesysmalloc(strlen(*env) + 1);
3450 (void)strcpy(*dup_env, *env);
3451 }
103a7189
JH		 3452 *dup_env = Nullch;
3453 env = dup_env_base;
3454 } /* else what? */
3455 }
3456#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3457 if (env)
3458 for (; *env; env++) {
93a17b20 3459 if (!(s = strchr(*env,'=')))
79072805
LW		 3460 continue;
3461 *s++ = '\0';
60ce6247 3462#if defined(MSDOS)
137443ea 3463 (void)strupr(*env);
3464#endif
79072805
LW		 3465 sv = newSVpv(s--,0);
3466 (void)hv_store(hv, *env, s - *env, sv, 0);
3467 *s = '=';
764df951 3468 }
480bfd1e 3469#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3470 if (dup_env_base) {
3471 char **dup_env;
3472 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3473 safesysfree(*dup_env);
3474 safesysfree(dup_env_base);
103a7189 3475 }
7e0f6a1f 3476#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3477#endif /* USE_ENVIRON_ARRAY */
79072805 3478 }
bbce6d69 3479 TAINT_NOT;
155aba94 3480 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3481 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3482}
34de22dd 3483
76e3520e 3484STATIC void
cea2e8a9 3485S_init_perllib(pTHX)
34de22dd 3486{
85e6fe83 3487 char *s;
3280af22 3488 if (!PL_tainting) {
552a7a9b 3489#ifndef VMS
76e3520e 3490 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3491 if (s)
9c8a64f0 3492 incpush(s, TRUE, TRUE);
85e6fe83 3493 else
9c8a64f0 3494 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3495#else /* VMS */
3496 /* Treat PERL5?LIB as a possible search list logical name -- the
3497 * "natural" VMS idiom for a Unix path string. We allow each
3498 * element to be a set of |-separated directories for compatibility.
3499 */
3500 char buf[256];
3501 int idx = 0;
3502 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3503 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3504 else
9c8a64f0 3505 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3506#endif /* VMS */
85e6fe83 3507 }
34de22dd 3508
c90c0ff4 3509/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3510 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3511*/
4633a7c4 3512#ifdef APPLLIB_EXP
9c8a64f0 3513 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3514#endif
4633a7c4 3515
fed7345c 3516#ifdef ARCHLIB_EXP
9c8a64f0 3517 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3518#endif
bf4acbe4
GS		 3519#ifdef MACOS_TRADITIONAL
3520 {
3521 struct stat tmpstatbuf;
3522 SV * privdir = NEWSV(55, 0);
3523 char * macperl = PerlEnv_getenv("MACPERL");
3524
3525 if (!macperl)
3526 macperl = "";
3527
3528 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3529 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3530 incpush(SvPVX(privdir), TRUE, FALSE);
3531 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3532 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3533 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3534
bf4acbe4
GS		 3535 SvREFCNT_dec(privdir);
3536 }
3537 if (!PL_tainting)
3538 incpush(":", FALSE, FALSE);
3539#else
fed7345c 3540#ifndef PRIVLIB_EXP
65f19062 3541# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3542#endif
ac27b0f5 3543#if defined(WIN32)
9c8a64f0 3544 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3545#else
9c8a64f0 3546 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3547#endif
4633a7c4 3548
65f19062 3549#ifdef SITEARCH_EXP
3b290362
GS		 3550 /* sitearch is always relative to sitelib on Windows for
3551 * DLL-based path intuition to work correctly */
3552# if !defined(WIN32)
9c8a64f0 3553 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3554# endif
3555#endif
3556
4633a7c4 3557#ifdef SITELIB_EXP
65f19062 3558# if defined(WIN32)
9c8a64f0 3559 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3560# else
9c8a64f0 3561 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3562# endif
3563#endif
189d1e8d 3564
65f19062 3565#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3566 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3567#endif
65f19062
GS		 3568
3569#ifdef PERL_VENDORARCH_EXP
4ea817c6 3570 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3571 * DLL-based path intuition to work correctly */
3572# if !defined(WIN32)
9c8a64f0 3573 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3574# endif
4b03c463 3575#endif
65f19062
GS		 3576
3577#ifdef PERL_VENDORLIB_EXP
3578# if defined(WIN32)
9c8a64f0 3579 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3580# else
9c8a64f0 3581 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3582# endif
a3635516 3583#endif
65f19062
GS		 3584
3585#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3586 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3587#endif
65f19062 3588
3b777bb4
GS		 3589#ifdef PERL_OTHERLIBDIRS
3590 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3591#endif
3592
3280af22 3593 if (!PL_tainting)
9c8a64f0 3594 incpush(".", FALSE, FALSE);
bf4acbe4 3595#endif /* MACOS_TRADITIONAL */
774d564b 3596}
3597
ed79a026 3598#if defined(DOSISH) || defined(EPOC)
774d564b 3599# define PERLLIB_SEP ';'
3600#else
3601# if defined(VMS)
3602# define PERLLIB_SEP '|'
3603# else
bf4acbe4
GS		 3604# if defined(MACOS_TRADITIONAL)
3605# define PERLLIB_SEP ','
3606# else
3607# define PERLLIB_SEP ':'
3608# endif
774d564b 3609# endif
3610#endif
3611#ifndef PERLLIB_MANGLE
3612# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3613#endif
774d564b 3614
76e3520e 3615STATIC void
9c8a64f0 3616S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3617{
3618 SV *subdir = Nullsv;
774d564b 3619
3b290362 3620 if (!p || !*p)
774d564b 3621 return;
3622
9c8a64f0 3623 if (addsubdirs || addoldvers) {
00db4c45 3624 subdir = sv_newmortal();
774d564b 3625 }
3626
3627 /* Break at all separators */
3628 while (p && *p) {
8c52afec 3629 SV *libdir = NEWSV(55,0);
774d564b 3630 char *s;
3631
3632 /* skip any consecutive separators */
3633 while ( *p == PERLLIB_SEP ) {
3634 /* Uncomment the next line for PATH semantics */
79cb57f6 3635 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3636 p++;
3637 }
3638
3639 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3640 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3641 (STRLEN)(s - p));
3642 p = s + 1;
3643 }
3644 else {
3645 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3646 p = Nullch; /* break out */
3647 }
bf4acbe4
GS		 3648#ifdef MACOS_TRADITIONAL
3649 if (!strchr(SvPVX(libdir), ':'))
3650 sv_insert(libdir, 0, 0, ":", 1);
3651 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3652 sv_catpv(libdir, ":");
3653#endif
774d564b 3654
3655 /*
3656 * BEFORE pushing libdir onto @INC we may first push version- and
3657 * archname-specific sub-directories.
3658 */
9c8a64f0 3659 if (addsubdirs || addoldvers) {
29d82f8d 3660#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3661 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3662 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3663 const char **incver;
3664#endif
774d564b 3665 struct stat tmpstatbuf;
aa689395 3666#ifdef VMS
3667 char *unix;
3668 STRLEN len;
774d564b 3669
2d8e6c8d 3670 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3671 len = strlen(unix);
3672 while (unix[len-1] == '/') len--; /* Cosmetic */
3673 sv_usepvn(libdir,unix,len);
3674 }
3675 else
bf49b057 3676 PerlIO_printf(Perl_error_log,
aa689395 3677 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3678 SvPV(libdir,len));
aa689395 3679#endif
9c8a64f0 3680 if (addsubdirs) {
bf4acbe4
GS		 3681#ifdef MACOS_TRADITIONAL
3682#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3683#define PERL_ARCH_FMT "%s:"
3684#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3685#else
3686#define PERL_AV_SUFFIX_FMT "/"
3687#define PERL_ARCH_FMT "/%s"
084592ab 3688#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3689#endif
9c8a64f0 3690 /* .../version/archname if -d .../version/archname */
084592ab 3691 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3692 libdir,
3693 (int)PERL_REVISION, (int)PERL_VERSION,
3694 (int)PERL_SUBVERSION, ARCHNAME);
3695 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3696 S_ISDIR(tmpstatbuf.st_mode))
3697 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3698
9c8a64f0 3699 /* .../version if -d .../version */
084592ab 3700 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3701 (int)PERL_REVISION, (int)PERL_VERSION,
3702 (int)PERL_SUBVERSION);
3703 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3704 S_ISDIR(tmpstatbuf.st_mode))
3705 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3706
3707 /* .../archname if -d .../archname */
bf4acbe4 3708 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3709 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3710 S_ISDIR(tmpstatbuf.st_mode))
3711 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3712 }
9c8a64f0 3713
9c8a64f0 3714#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3715 if (addoldvers) {
9c8a64f0
GS		 3716 for (incver = incverlist; *incver; incver++) {
3717 /* .../xxx if -d .../xxx */
bf4acbe4 3718 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3719 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3720 S_ISDIR(tmpstatbuf.st_mode))
3721 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3722 }
3723 }
29d82f8d 3724#endif
774d564b 3725 }
3726
3727 /* finally push this lib directory on the end of @INC */
3280af22 3728 av_push(GvAVn(PL_incgv), libdir);
774d564b 3729 }
34de22dd 3730}
93a17b20 3731
4d1ff10f 3732#ifdef USE_5005THREADS
76e3520e 3733STATIC struct perl_thread *
cea2e8a9 3734S_init_main_thread(pTHX)
199100c8 3735{
c5be433b 3736#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3737 struct perl_thread *thr;
cea2e8a9 3738#endif
199100c8
MB		 3739 XPV *xpv;
3740
52e1cb5e 3741 Newz(53, thr, 1, struct perl_thread);
533c011a 3742 PL_curcop = &PL_compiling;
c5be433b 3743 thr->interp = PERL_GET_INTERP;
199100c8 3744 thr->cvcache = newHV();
54b9620d 3745 thr->threadsv = newAV();
940cb80d 3746 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3747 thr->specific = newAV();
3748 thr->flags = THRf_R_JOINABLE;
3749 MUTEX_INIT(&thr->mutex);
3750 /* Handcraft thrsv similarly to mess_sv */
533c011a 3751 New(53, PL_thrsv, 1, SV);
199100c8 3752 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3753 SvFLAGS(PL_thrsv) = SVt_PV;
3754 SvANY(PL_thrsv) = (void*)xpv;
3755 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3756 SvPVX(PL_thrsv) = (char*)thr;
3757 SvCUR_set(PL_thrsv, sizeof(thr));
3758 SvLEN_set(PL_thrsv, sizeof(thr));
3759 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3760 thr->oursv = PL_thrsv;
3761 PL_chopset = " \n-";
3967c732 3762 PL_dumpindent = 4;
533c011a
NIS		 3763
3764 MUTEX_LOCK(&PL_threads_mutex);
3765 PL_nthreads++;
199100c8
MB		 3766 thr->tid = 0;
3767 thr->next = thr;
3768 thr->prev = thr;
8dcd6f7b 3769 thr->thr_done = 0;
533c011a 3770 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3771
4b026b9e 3772#ifdef HAVE_THREAD_INTERN
4f63d024 3773 Perl_init_thread_intern(thr);
235db74f
GS		 3774#endif
3775
3776#ifdef SET_THREAD_SELF
3777 SET_THREAD_SELF(thr);
199100c8
MB		 3778#else
3779 thr->self = pthread_self();
235db74f 3780#endif /* SET_THREAD_SELF */
06d86050 3781 PERL_SET_THX(thr);
199100c8
MB		 3782
3783 /*
411caa50
JH		 3784 * These must come after the thread self setting
3785 * because sv_setpvn does SvTAINT and the taint
3786 * fields thread selfness being set.
199100c8 3787 */
533c011a
NIS		 3788 PL_toptarget = NEWSV(0,0);
3789 sv_upgrade(PL_toptarget, SVt_PVFM);
3790 sv_setpvn(PL_toptarget, "", 0);
3791 PL_bodytarget = NEWSV(0,0);
3792 sv_upgrade(PL_bodytarget, SVt_PVFM);
3793 sv_setpvn(PL_bodytarget, "", 0);
3794 PL_formtarget = PL_bodytarget;
79cb57f6 3795 thr->errsv = newSVpvn("", 0);
78857c3c 3796 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3797
533c011a 3798 PL_maxscream = -1;
a2efc822 3799 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 3800 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3801 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3802 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3803 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3804 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3805 PL_regindent = 0;
3806 PL_reginterp_cnt = 0;
5c0ca799 3807
199100c8
MB		 3808 return thr;
3809}
4d1ff10f 3810#endif /* USE_5005THREADS */
199100c8 3811
93a17b20 3812void
864dbfa3 3813Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3814{
971a9dd3 3815 SV *atsv;
57843af0 3816 line_t oldline = CopLINE(PL_curcop);
312caa8e 3817 CV *cv;
22921e25 3818 STRLEN len;
6224f72b 3819 int ret;
db36c5a1 3820 dJMPENV;
93a17b20 3821
76e3520e 3822 while (AvFILL(paramList) >= 0) {
312caa8e 3823 cv = (CV*)av_shift(paramList);
aefff11f 3824 if (PL_savebegin && (paramList == PL_beginav)) {
059a8bb7
JH		 3825 /* save PL_beginav for compiler */
3826 if (! PL_beginav_save)
3827 PL_beginav_save = newAV();
3828 av_push(PL_beginav_save, (SV*)cv);
3829 } else {
3830 SAVEFREESV(cv);
3831 }
14dd3ad8
GS		 3832#ifdef PERL_FLEXIBLE_EXCEPTIONS
3833 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3834#else
3835 JMPENV_PUSH(ret);
3836#endif
6224f72b 3837 switch (ret) {
312caa8e 3838 case 0:
14dd3ad8
GS		 3839#ifndef PERL_FLEXIBLE_EXCEPTIONS
3840 call_list_body(cv);
3841#endif
971a9dd3 3842 atsv = ERRSV;
312caa8e
CS		 3843 (void)SvPV(atsv, len);
3844 if (len) {
971a9dd3 3845 STRLEN n_a;
312caa8e 3846 PL_curcop = &PL_compiling;
57843af0 3847 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3848 if (paramList == PL_beginav)
3849 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3850 else
4f25aa18
GS		 3851 Perl_sv_catpvf(aTHX_ atsv,
3852 "%s failed--call queue aborted",
7d30b5c4 3853 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3854 : paramList == PL_initav ? "INIT"
3855 : "END");
312caa8e
CS		 3856 while (PL_scopestack_ix > oldscope)
3857 LEAVE;
14dd3ad8 3858 JMPENV_POP;
971a9dd3 3859 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3860 }
85e6fe83 3861 break;
6224f72b 3862 case 1:
f86702cc 3863 STATUS_ALL_FAILURE;
85e6fe83 3864 /* FALL THROUGH */
6224f72b 3865 case 2:
85e6fe83 3866 /* my_exit() was called */
3280af22 3867 while (PL_scopestack_ix > oldscope)
2ae324a7 3868 LEAVE;
84902520 3869 FREETMPS;
3280af22 3870 PL_curstash = PL_defstash;
3280af22 3871 PL_curcop = &PL_compiling;
57843af0 3872 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3873 JMPENV_POP;
cc3604b1 3874 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3875 if (paramList == PL_beginav)
cea2e8a9 3876 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3877 else
4f25aa18 3878 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3879 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3880 : paramList == PL_initav ? "INIT"
3881 : "END");
85e6fe83 3882 }
f86702cc 3883 my_exit_jump();
85e6fe83 3884 /* NOTREACHED */
6224f72b 3885 case 3:
312caa8e
CS		 3886 if (PL_restartop) {
3887 PL_curcop = &PL_compiling;
57843af0 3888 CopLINE_set(PL_curcop, oldline);
312caa8e 3889 JMPENV_JUMP(3);
85e6fe83 3890 }
bf49b057 3891 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3892 FREETMPS;
3893 break;
8990e307 3894 }
14dd3ad8 3895 JMPENV_POP;
93a17b20 3896 }
93a17b20 3897}
93a17b20 3898
14dd3ad8 3899#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3900STATIC void *
14dd3ad8 3901S_vcall_list_body(pTHX_ va_list args)
312caa8e 3902{
312caa8e 3903 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3904 return call_list_body(cv);
3905}
3906#endif
312caa8e 3907
14dd3ad8
GS		 3908STATIC void *
3909S_call_list_body(pTHX_ CV *cv)
3910{
312caa8e 3911 PUSHMARK(PL_stack_sp);
864dbfa3 3912 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3913 return NULL;
3914}
3915
f86702cc 3916void
864dbfa3 3917Perl_my_exit(pTHX_ U32 status)
f86702cc 3918{
8b73bbec 3919 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3920 thr, (unsigned long) status));
f86702cc 3921 switch (status) {
3922 case 0:
3923 STATUS_ALL_SUCCESS;
3924 break;
3925 case 1:
3926 STATUS_ALL_FAILURE;
3927 break;
3928 default:
3929 STATUS_NATIVE_SET(status);
3930 break;
3931 }
3932 my_exit_jump();
3933}
3934
3935void
864dbfa3 3936Perl_my_failure_exit(pTHX)
f86702cc 3937{
3938#ifdef VMS
3939 if (vaxc$errno & 1) {
4fdae800 3940 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3941 STATUS_NATIVE_SET(44);
f86702cc 3942 }
3943 else {
ff0cee69 3944 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3945 STATUS_NATIVE_SET(44);
f86702cc 3946 else
4fdae800 3947 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3948 }
3949#else
9b599b2a 3950 int exitstatus;
f86702cc 3951 if (errno & 255)
3952 STATUS_POSIX_SET(errno);
9b599b2a 3953 else {
ac27b0f5 3954 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 3955 if (exitstatus & 255)
3956 STATUS_POSIX_SET(exitstatus);
3957 else
3958 STATUS_POSIX_SET(255);
3959 }
f86702cc 3960#endif
3961 my_exit_jump();
93a17b20
LW		 3962}
3963
76e3520e 3964STATIC void
cea2e8a9 3965S_my_exit_jump(pTHX)
f86702cc 3966{
c09156bb 3967 register PERL_CONTEXT *cx;
f86702cc 3968 I32 gimme;
3969 SV **newsp;
3970
3280af22
NIS		 3971 if (PL_e_script) {
3972 SvREFCNT_dec(PL_e_script);
3973 PL_e_script = Nullsv;
f86702cc 3974 }
3975
3280af22 3976 POPSTACK_TO(PL_mainstack);
f86702cc 3977 if (cxstack_ix >= 0) {
3978 if (cxstack_ix > 0)
3979 dounwind(0);
3280af22 3980 POPBLOCK(cx,PL_curpm);
f86702cc 3981 LEAVE;
3982 }
ff0cee69 3983
6224f72b 3984 JMPENV_JUMP(2);
f86702cc 3985}
873ef191 3986
0cb96387 3987static I32
acfe0abc 3988read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3989{
3990 char *p, *nl;
3280af22 3991 p = SvPVX(PL_e_script);
873ef191 3992 nl = strchr(p, '\n');
3280af22 3993 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3994 if (nl-p == 0) {
0cb96387 3995 filter_del(read_e_script);
873ef191 3996 return 0;
7dfe3f66 3997 }
873ef191 3998 sv_catpvn(buf_sv, p, nl-p);
3280af22 3999 sv_chop(PL_e_script, nl);
873ef191
GS		 4000 return 1;
4001}
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