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a0d0e21e
LW		 1/* perl.c
2 *
be3c0a43 3 * Copyright (c) 1987-2002 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
011f1a1a
JH		 19#ifdef NETWARE
20#include "nwutil.h"
21char *nw_get_sitelib(const char *pl);
22#endif
23
df5cef82 24/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 25#ifdef I_UNISTD
26#include <unistd.h>
27#endif
a0d0e21e 28
7114a2d2 29#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 30char *getenv (char *); /* Usually in <stdlib.h> */
54310121 31#endif
32
acfe0abc 33static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 34
a687059c
LW		 35#ifdef IAMSUID
36#ifndef DOSUID
37#define DOSUID
38#endif
39#endif
378cc40b 40
a687059c
LW		 41#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
42#ifdef DOSUID
43#undef DOSUID
44#endif
45#endif
8d063cd8 46
4d1ff10f 47#if defined(USE_5005THREADS)
06d86050
GS		 48# define INIT_TLS_AND_INTERP \
49 STMT_START { \
50 if (!PL_curinterp) { \
51 PERL_SET_INTERP(my_perl); \
52 INIT_THREADS; \
53 ALLOC_THREAD_KEY; \
54 } \
55 } STMT_END
56#else
57# if defined(USE_ITHREADS)
58# define INIT_TLS_AND_INTERP \
59 STMT_START { \
60 if (!PL_curinterp) { \
61 PERL_SET_INTERP(my_perl); \
62 INIT_THREADS; \
63 ALLOC_THREAD_KEY; \
534825c4
GS		 64 PERL_SET_THX(my_perl); \
65 OP_REFCNT_INIT; \
66 } \
67 else { \
68 PERL_SET_THX(my_perl); \
06d86050 69 } \
06d86050
GS		 70 } STMT_END
71# else
72# define INIT_TLS_AND_INTERP \
73 STMT_START { \
74 if (!PL_curinterp) { \
75 PERL_SET_INTERP(my_perl); \
76 } \
77 PERL_SET_THX(my_perl); \
78 } STMT_END
79# endif
80#endif
81
32e30700
GS		 82#ifdef PERL_IMPLICIT_SYS
83PerlInterpreter *
7766f137
GS		 84perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
85 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 86 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
87 struct IPerlDir* ipD, struct IPerlSock* ipS,
88 struct IPerlProc* ipP)
89{
90 PerlInterpreter *my_perl;
32e30700
GS		 91 /* New() needs interpreter, so call malloc() instead */
92 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 93 INIT_TLS_AND_INTERP;
32e30700
GS		 94 Zero(my_perl, 1, PerlInterpreter);
95 PL_Mem = ipM;
7766f137
GS		 96 PL_MemShared = ipMS;
97 PL_MemParse = ipMP;
32e30700
GS		 98 PL_Env = ipE;
99 PL_StdIO = ipStd;
100 PL_LIO = ipLIO;
101 PL_Dir = ipD;
102 PL_Sock = ipS;
103 PL_Proc = ipP;
7766f137 104
32e30700
GS		 105 return my_perl;
106}
107#else
954c1994
GS		 108
109/*
ccfc67b7
JH		 110=head1 Embedding Functions
111
954c1994
GS		 112=for apidoc perl_alloc
113
114Allocates a new Perl interpreter. See L<perlembed>.
115
116=cut
117*/
118
93a17b20 119PerlInterpreter *
cea2e8a9 120perl_alloc(void)
79072805 121{
cea2e8a9 122 PerlInterpreter *my_perl;
35d7cf2c
JH		 123#ifdef USE_5005THREADS
124 dTHX;
125#endif
79072805 126
54aff467 127 /* New() needs interpreter, so call malloc() instead */
e8ee3774 128 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 129
06d86050 130 INIT_TLS_AND_INTERP;
dedcbb81 131 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 132 return my_perl;
79072805 133}
32e30700 134#endif /* PERL_IMPLICIT_SYS */
79072805 135
954c1994
GS		 136/*
137=for apidoc perl_construct
138
139Initializes a new Perl interpreter. See L<perlembed>.
140
141=cut
142*/
143
79072805 144void
0cb96387 145perl_construct(pTHXx)
79072805 146{
4d1ff10f 147#ifdef USE_5005THREADS
a863c7d1 148#ifndef FAKE_THREADS
e1f15930 149 struct perl_thread *thr = NULL;
a863c7d1 150#endif /* FAKE_THREADS */
4d1ff10f 151#endif /* USE_5005THREADS */
ba869deb 152
8990e307 153#ifdef MULTIPLICITY
54aff467 154 init_interp();
ac27b0f5 155 PL_perl_destruct_level = 1;
54aff467
GS		 156#else
157 if (PL_perl_destruct_level > 0)
158 init_interp();
159#endif
160
33f46ff6 161 /* Init the real globals (and main thread)? */
3280af22 162 if (!PL_linestr) {
4d1ff10f 163#ifdef USE_5005THREADS
533c011a 164 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 165 /*
166 * Safe to use basic SV functions from now on (though
167 * not things like mortals or tainting yet).
168 */
533c011a
NIS		 169 MUTEX_INIT(&PL_eval_mutex);
170 COND_INIT(&PL_eval_cond);
171 MUTEX_INIT(&PL_threads_mutex);
172 COND_INIT(&PL_nthreads_cond);
ba869deb 173# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 174 MUTEX_INIT(&PL_svref_mutex);
ba869deb 175# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 176
5ff3f7a4 177 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 178 MUTEX_INIT(&PL_sv_lock_mutex);
179 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 180
199100c8 181 thr = init_main_thread();
4d1ff10f 182#endif /* USE_5005THREADS */
11343788 183
14dd3ad8 184#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 185 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 186#endif
312caa8e 187
2aea9f8a
GS		 188 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
189
3280af22
NIS		 190 PL_linestr = NEWSV(65,79);
191 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 192
3280af22 193 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 194 /* set read-only and try to insure than we wont see REFCNT==0
195 very often */
196
3280af22
NIS		 197 SvREADONLY_on(&PL_sv_undef);
198 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 199
3280af22
NIS		 200 sv_setpv(&PL_sv_no,PL_No);
201 SvNV(&PL_sv_no);
202 SvREADONLY_on(&PL_sv_no);
203 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 204
3280af22
NIS		 205 sv_setpv(&PL_sv_yes,PL_Yes);
206 SvNV(&PL_sv_yes);
207 SvREADONLY_on(&PL_sv_yes);
208 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 209 }
79072805 210
cea2e8a9 211 PL_sighandlerp = Perl_sighandler;
3280af22 212 PL_pidstatus = newHV();
79072805
LW		 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
3a1ee7e8 261 PerlIO_init(aTHX); /* 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);
48c6b404 266 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH		 267 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
268 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 269#ifdef USE_ITHREADS
13137afc
AB		 270 PL_regex_padav = newAV();
271 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
272 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 273#endif
e5dd39fc 274#ifdef USE_REENTRANT_API
59bd0823 275 Perl_reentrant_init(aTHX);
e5dd39fc 276#endif
3d47000e
AB		 277
278 /* Note that strtab is a rather special HV. Assumptions are made
279 about not iterating on it, and not adding tie magic to it.
280 It is properly deallocated in perl_destruct() */
281 PL_strtab = newHV();
282
283#ifdef USE_5005THREADS
284 MUTEX_INIT(&PL_strtab_mutex);
285#endif
286 HvSHAREKEYS_off(PL_strtab); /* mandatory */
287 hv_ksplit(PL_strtab, 512);
288
0631ea03
AB		 289#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
290 _dyld_lookup_and_bind
291 ("__environ", (unsigned long *) &environ_pointer, NULL);
292#endif /* environ */
293
294#ifdef USE_ENVIRON_ARRAY
295 PL_origenviron = environ;
296#endif
297
8990e307 298 ENTER;
79072805
LW		 299}
300
954c1994 301/*
62375a60
NIS		 302=for apidoc nothreadhook
303
304Stub that provides thread hook for perl_destruct when there are
305no threads.
306
307=cut
308*/
309
310int
4e9e3734 311Perl_nothreadhook(pTHX)
62375a60
NIS		 312{
313 return 0;
314}
315
316/*
954c1994
GS		 317=for apidoc perl_destruct
318
319Shuts down a Perl interpreter. See L<perlembed>.
320
321=cut
322*/
323
31d77e54 324int
0cb96387 325perl_destruct(pTHXx)
79072805 326{
7c474504 327 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 328 HV *hv;
4d1ff10f 329#ifdef USE_5005THREADS
33f46ff6 330 Thread t;
cea2e8a9 331 dTHX;
4d1ff10f 332#endif /* USE_5005THREADS */
8990e307 333
7766f137
GS		 334 /* wait for all pseudo-forked children to finish */
335 PERL_WAIT_FOR_CHILDREN;
336
4d1ff10f 337#ifdef USE_5005THREADS
0f15f207 338#ifndef FAKE_THREADS
8023c3ce
MB		 339 /* Pass 1 on any remaining threads: detach joinables, join zombies */
340 retry_cleanup:
533c011a 341 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 342 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 343 "perl_destruct: waiting for %d threads...\n",
533c011a 344 PL_nthreads - 1));
33f46ff6 345 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 346 MUTEX_LOCK(&t->mutex);
347 switch (ThrSTATE(t)) {
348 AV *av;
c7848ba1 349 case THRf_ZOMBIE:
bf49b057 350 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 351 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 352 ThrSETSTATE(t, THRf_DEAD);
353 MUTEX_UNLOCK(&t->mutex);
533c011a 354 PL_nthreads--;
8023c3ce
MB		 355 /*
356 * The SvREFCNT_dec below may take a long time (e.g. av
357 * may contain an object scalar whose destructor gets
358 * called) so we have to unlock threads_mutex and start
359 * all over again.
360 */
533c011a 361 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 362 JOIN(t, &av);
605e5515 363 SvREFCNT_dec((SV*)av);
bf49b057 364 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 365 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 366 goto retry_cleanup;
c7848ba1 367 case THRf_R_JOINABLE:
bf49b057 368 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 369 "perl_destruct: detaching thread %p\n", t));
370 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 371 /*
c7848ba1
MB		 372 * We unlock threads_mutex and t->mutex in the opposite order
373 * from which we locked them just so that DETACH won't
374 * deadlock if it panics. It's only a breach of good style
375 * not a bug since they are unlocks not locks.
376 */
533c011a 377 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 378 DETACH(t);
379 MUTEX_UNLOCK(&t->mutex);
8023c3ce 380 goto retry_cleanup;
c7848ba1 381 default:
bf49b057 382 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 383 "perl_destruct: ignoring %p (state %u)\n",
384 t, ThrSTATE(t)));
385 MUTEX_UNLOCK(&t->mutex);
c7848ba1 386 /* fall through and out */
33f46ff6
MB		 387 }
388 }
8023c3ce
MB		 389 /* We leave the above "Pass 1" loop with threads_mutex still locked */
390
391 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 392 while (PL_nthreads > 1)
11343788 393 {
bf49b057 394 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 395 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 396 PL_nthreads - 1));
397 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 398 }
399 /* At this point, we're the last thread */
533c011a 400 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 401 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 402 MUTEX_DESTROY(&PL_threads_mutex);
403 COND_DESTROY(&PL_nthreads_cond);
b57a092c 404 PL_nthreads--;
0f15f207 405#endif /* !defined(FAKE_THREADS) */
4d1ff10f 406#endif /* USE_5005THREADS */
11343788 407
3280af22 408 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 409#ifdef DEBUGGING
410 {
411 char *s;
155aba94 412 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 413 int i = atoi(s);
414 if (destruct_level < i)
415 destruct_level = i;
416 }
4633a7c4
LW		 417 }
418#endif
419
31d77e54
AB		 420
421 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 422 dJMPENV;
423 int x = 0;
424
425 JMPENV_PUSH(x);
426 if (PL_endav && !PL_minus_c)
427 call_list(PL_scopestack_ix, PL_endav);
428 JMPENV_POP;
26f423df 429 }
f3faeb53 430 LEAVE;
a0d0e21e
LW		 431 FREETMPS;
432
e00b64d4 433 /* Need to flush since END blocks can produce output */
9f4bd222 434 PerlIO_flush((PerlIO*)NULL);
e00b64d4 435
62375a60
NIS		 436 if (CALL_FPTR(PL_threadhook)(aTHX)) {
437 /* Threads hook has vetoed further cleanup */
438 return STATUS_NATIVE_EXPORT;;
439 }
440
ff0cee69 441 /* We must account for everything. */
442
443 /* Destroy the main CV and syntax tree */
3280af22 444 if (PL_main_root) {
47c8db80
AF		 445 /* If running under -d may not have PL_comppad. */
446 PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL;
3280af22
NIS		 447 op_free(PL_main_root);
448 PL_main_root = Nullop;
a0d0e21e 449 }
3280af22
NIS		 450 PL_curcop = &PL_compiling;
451 PL_main_start = Nullop;
452 SvREFCNT_dec(PL_main_cv);
453 PL_main_cv = Nullcv;
24d3c518 454 PL_dirty = TRUE;
ff0cee69 455
13621cfb
NIS		 456 /* Tell PerlIO we are about to tear things apart in case
457 we have layers which are using resources that should
458 be cleaned up now.
459 */
460
461 PerlIO_destruct(aTHX);
462
3280af22 463 if (PL_sv_objcount) {
a0d0e21e
LW		 464 /*
465 * Try to destruct global references. We do this first so that the
466 * destructors and destructees still exist. Some sv's might remain.
467 * Non-referenced objects are on their own.
468 */
a0d0e21e 469 sv_clean_objs();
8990e307
LW		 470 }
471
5cd24f17 472 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 473 SvREFCNT_dec(PL_warnhook);
474 PL_warnhook = Nullsv;
475 SvREFCNT_dec(PL_diehook);
476 PL_diehook = Nullsv;
5cd24f17 477
4b556e6c 478 /* call exit list functions */
3280af22 479 while (PL_exitlistlen-- > 0)
acfe0abc 480 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 481
3280af22 482 Safefree(PL_exitlist);
4b556e6c 483
a0d0e21e 484 if (destruct_level == 0){
8990e307 485
a0d0e21e 486 DEBUG_P(debprofdump());
ac27b0f5 487
56a2bab7
NIS		 488#if defined(PERLIO_LAYERS)
489 /* No more IO - including error messages ! */
490 PerlIO_cleanup(aTHX);
491#endif
492
a0d0e21e 493 /* The exit() function will do everything that needs doing. */
31d77e54 494 return STATUS_NATIVE_EXPORT;;
a0d0e21e 495 }
5dd60ef7 496
551a8b83 497 /* jettison our possibly duplicated environment */
4b647fb0
DM		 498 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
499 * so we certainly shouldn't free it here
500 */
501#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
4efc5df6
GS		 502 if (environ != PL_origenviron
503#ifdef USE_ITHREADS
504 /* only main thread can free environ[0] contents */
505 && PL_curinterp == aTHX
506#endif
507 )
508 {
551a8b83
JH		 509 I32 i;
510
511 for (i = 0; environ[i]; i++)
4b420006 512 safesysfree(environ[i]);
0631ea03 513
4b420006
JH		 514 /* Must use safesysfree() when working with environ. */
515 safesysfree(environ);
551a8b83
JH		 516
517 environ = PL_origenviron;
518 }
519#endif
520
5f8cb046
DM		 521#ifdef USE_ITHREADS
522 /* the syntax tree is shared between clones
523 * so op_free(PL_main_root) only ReREFCNT_dec's
524 * REGEXPs in the parent interpreter
525 * we need to manually ReREFCNT_dec for the clones
526 */
527 {
528 I32 i = AvFILLp(PL_regex_padav) + 1;
529 SV **ary = AvARRAY(PL_regex_padav);
530
531 while (i) {
35061a7e 532 SV *resv = ary[--i];
ba89bb6e 533 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 534
535 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 536 /* this is PL_reg_curpm, already freed
35061a7e
DM		 537 * flag is set in regexec.c:S_regtry
538 */
539 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 540 }
1cc8b4c5
AB		 541 else if(SvREPADTMP(resv)) {
542 SvREPADTMP_off(resv);
543 }
35061a7e 544 else {
5f8cb046
DM		 545 ReREFCNT_dec(re);
546 }
547 }
548 }
549 SvREFCNT_dec(PL_regex_padav);
550 PL_regex_padav = Nullav;
551 PL_regex_pad = NULL;
552#endif
553
5f05dabc 554 /* loosen bonds of global variables */
555
3280af22
NIS		 556 if(PL_rsfp) {
557 (void)PerlIO_close(PL_rsfp);
558 PL_rsfp = Nullfp;
8ebc5c01 559 }
560
561 /* Filters for program text */
3280af22
NIS		 562 SvREFCNT_dec(PL_rsfp_filters);
563 PL_rsfp_filters = Nullav;
8ebc5c01 564
565 /* switches */
3280af22
NIS		 566 PL_preprocess = FALSE;
567 PL_minus_n = FALSE;
568 PL_minus_p = FALSE;
569 PL_minus_l = FALSE;
570 PL_minus_a = FALSE;
571 PL_minus_F = FALSE;
572 PL_doswitches = FALSE;
599cee73 573 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 574 PL_doextract = FALSE;
575 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 576 PL_unsafe = FALSE;
577
578 Safefree(PL_inplace);
579 PL_inplace = Nullch;
a7cb1f99 580 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 581
582 if (PL_e_script) {
583 SvREFCNT_dec(PL_e_script);
584 PL_e_script = Nullsv;
8ebc5c01 585 }
586
bc0a45ed
DM		 587 while (--PL_origargc >= 0) {
588 Safefree(PL_origargv[PL_origargc]);
589 }
590 Safefree(PL_origargv);
591
8ebc5c01 592 /* magical thingies */
593
7889fe52
NIS		 594 SvREFCNT_dec(PL_ofs_sv); /* $, */
595 PL_ofs_sv = Nullsv;
5f05dabc 596
7889fe52
NIS		 597 SvREFCNT_dec(PL_ors_sv); /* $\ */
598 PL_ors_sv = Nullsv;
8ebc5c01 599
3280af22
NIS		 600 SvREFCNT_dec(PL_rs); /* $/ */
601 PL_rs = Nullsv;
dc92893f 602
d33b2eba
GS		 603 PL_multiline = 0; /* $* */
604 Safefree(PL_osname); /* $^O */
605 PL_osname = Nullch;
5f05dabc 606
3280af22
NIS		 607 SvREFCNT_dec(PL_statname);
608 PL_statname = Nullsv;
609 PL_statgv = Nullgv;
5f05dabc 610
8ebc5c01 611 /* defgv, aka *_ should be taken care of elsewhere */
612
8ebc5c01 613 /* clean up after study() */
3280af22
NIS		 614 SvREFCNT_dec(PL_lastscream);
615 PL_lastscream = Nullsv;
616 Safefree(PL_screamfirst);
617 PL_screamfirst = 0;
618 Safefree(PL_screamnext);
619 PL_screamnext = 0;
8ebc5c01 620
7d5ea4e7
GS		 621 /* float buffer */
622 Safefree(PL_efloatbuf);
623 PL_efloatbuf = Nullch;
624 PL_efloatsize = 0;
625
8ebc5c01 626 /* startup and shutdown function lists */
3280af22 627 SvREFCNT_dec(PL_beginav);
5a837c8f 628 SvREFCNT_dec(PL_beginav_save);
3280af22 629 SvREFCNT_dec(PL_endav);
7d30b5c4 630 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 631 SvREFCNT_dec(PL_initav);
632 PL_beginav = Nullav;
5a837c8f 633 PL_beginav_save = Nullav;
3280af22 634 PL_endav = Nullav;
7d30b5c4 635 PL_checkav = Nullav;
3280af22 636 PL_initav = Nullav;
5618dfe8 637
8ebc5c01 638 /* shortcuts just get cleared */
3280af22 639 PL_envgv = Nullgv;
3280af22
NIS		 640 PL_incgv = Nullgv;
641 PL_hintgv = Nullgv;
642 PL_errgv = Nullgv;
643 PL_argvgv = Nullgv;
644 PL_argvoutgv = Nullgv;
645 PL_stdingv = Nullgv;
bf49b057 646 PL_stderrgv = Nullgv;
3280af22
NIS		 647 PL_last_in_gv = Nullgv;
648 PL_replgv = Nullgv;
5c831c24 649 PL_debstash = Nullhv;
8ebc5c01 650
651 /* reset so print() ends up where we expect */
652 setdefout(Nullgv);
5c831c24 653
7a1c5554
GS		 654 SvREFCNT_dec(PL_argvout_stack);
655 PL_argvout_stack = Nullav;
8ebc5c01 656
5c831c24
GS		 657 SvREFCNT_dec(PL_modglobal);
658 PL_modglobal = Nullhv;
659 SvREFCNT_dec(PL_preambleav);
660 PL_preambleav = Nullav;
661 SvREFCNT_dec(PL_subname);
662 PL_subname = Nullsv;
663 SvREFCNT_dec(PL_linestr);
664 PL_linestr = Nullsv;
665 SvREFCNT_dec(PL_pidstatus);
666 PL_pidstatus = Nullhv;
667 SvREFCNT_dec(PL_toptarget);
668 PL_toptarget = Nullsv;
669 SvREFCNT_dec(PL_bodytarget);
670 PL_bodytarget = Nullsv;
671 PL_formtarget = Nullsv;
672
d33b2eba 673 /* free locale stuff */
b9582b6a 674#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 675 Safefree(PL_collation_name);
676 PL_collation_name = Nullch;
b9582b6a 677#endif
d33b2eba 678
b9582b6a 679#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 680 Safefree(PL_numeric_name);
681 PL_numeric_name = Nullch;
a453c169 682 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 683#endif
d33b2eba 684
5c831c24
GS		 685 /* clear utf8 character classes */
686 SvREFCNT_dec(PL_utf8_alnum);
687 SvREFCNT_dec(PL_utf8_alnumc);
688 SvREFCNT_dec(PL_utf8_ascii);
689 SvREFCNT_dec(PL_utf8_alpha);
690 SvREFCNT_dec(PL_utf8_space);
691 SvREFCNT_dec(PL_utf8_cntrl);
692 SvREFCNT_dec(PL_utf8_graph);
693 SvREFCNT_dec(PL_utf8_digit);
694 SvREFCNT_dec(PL_utf8_upper);
695 SvREFCNT_dec(PL_utf8_lower);
696 SvREFCNT_dec(PL_utf8_print);
697 SvREFCNT_dec(PL_utf8_punct);
698 SvREFCNT_dec(PL_utf8_xdigit);
699 SvREFCNT_dec(PL_utf8_mark);
700 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 701 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 702 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 703 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH		 704 SvREFCNT_dec(PL_utf8_idstart);
705 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS		 706 PL_utf8_alnum = Nullsv;
707 PL_utf8_alnumc = Nullsv;
708 PL_utf8_ascii = Nullsv;
709 PL_utf8_alpha = Nullsv;
710 PL_utf8_space = Nullsv;
711 PL_utf8_cntrl = Nullsv;
712 PL_utf8_graph = Nullsv;
713 PL_utf8_digit = Nullsv;
714 PL_utf8_upper = Nullsv;
715 PL_utf8_lower = Nullsv;
716 PL_utf8_print = Nullsv;
717 PL_utf8_punct = Nullsv;
718 PL_utf8_xdigit = Nullsv;
719 PL_utf8_mark = Nullsv;
720 PL_utf8_toupper = Nullsv;
721 PL_utf8_totitle = Nullsv;
722 PL_utf8_tolower = Nullsv;
b4e400f9 723 PL_utf8_tofold = Nullsv;
82686b01
JH		 724 PL_utf8_idstart = Nullsv;
725 PL_utf8_idcont = Nullsv;
5c831c24 726
971a9dd3
GS		 727 if (!specialWARN(PL_compiling.cop_warnings))
728 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 729 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 730 if (!specialCopIO(PL_compiling.cop_io))
731 SvREFCNT_dec(PL_compiling.cop_io);
732 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS		 733 CopFILE_free(&PL_compiling);
734 CopSTASH_free(&PL_compiling);
5c831c24 735
a0d0e21e 736 /* Prepare to destruct main symbol table. */
5f05dabc 737
3280af22
NIS		 738 hv = PL_defstash;
739 PL_defstash = 0;
a0d0e21e 740 SvREFCNT_dec(hv);
5c831c24
GS		 741 SvREFCNT_dec(PL_curstname);
742 PL_curstname = Nullsv;
a0d0e21e 743
5a844595
GS		 744 /* clear queued errors */
745 SvREFCNT_dec(PL_errors);
746 PL_errors = Nullsv;
747
a0d0e21e 748 FREETMPS;
0453d815 749 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 750 if (PL_scopestack_ix != 0)
9014280d 751 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 752 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 753 (long)PL_scopestack_ix);
754 if (PL_savestack_ix != 0)
9014280d 755 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 756 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 757 (long)PL_savestack_ix);
758 if (PL_tmps_floor != -1)
9014280d 759 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 760 (long)PL_tmps_floor + 1);
a0d0e21e 761 if (cxstack_ix != -1)
9014280d 762 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 763 (long)cxstack_ix + 1);
a0d0e21e 764 }
8990e307
LW		 765
766 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 767 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 768 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 769
770 /* the 2 is for PL_fdpid and PL_strtab */
771 while (PL_sv_count > 2 && sv_clean_all())
772 ;
773
d33b2eba
GS		 774 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
775 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 776 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
777 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 778
d4777f27
GS		 779 AvREAL_off(PL_fdpid); /* no surviving entries */
780 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 781 PL_fdpid = Nullav;
782
6c644e78
GS		 783#ifdef HAVE_INTERP_INTERN
784 sys_intern_clear();
785#endif
786
6e72f9df 787 /* Destruct the global string table. */
788 {
789 /* Yell and reset the HeVAL() slots that are still holding refcounts,
790 * so that sv_free() won't fail on them.
791 */
792 I32 riter;
793 I32 max;
794 HE *hent;
795 HE **array;
796
797 riter = 0;
3280af22
NIS		 798 max = HvMAX(PL_strtab);
799 array = HvARRAY(PL_strtab);
6e72f9df 800 hent = array[0];
801 for (;;) {
0453d815 802 if (hent && ckWARN_d(WARN_INTERNAL)) {
9014280d 803 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 804 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 805 HeVAL(hent) - Nullsv, HeKEY(hent));
806 HeVAL(hent) = Nullsv;
807 hent = HeNEXT(hent);
808 }
809 if (!hent) {
810 if (++riter > max)
811 break;
812 hent = array[riter];
813 }
814 }
815 }
3280af22 816 SvREFCNT_dec(PL_strtab);
6e72f9df 817
e652bb2f 818#ifdef USE_ITHREADS
a0739874
DM		 819 /* free the pointer table used for cloning */
820 ptr_table_free(PL_ptr_table);
53186e96 821#endif
a0739874 822
d33b2eba
GS		 823 /* free special SVs */
824
825 SvREFCNT(&PL_sv_yes) = 0;
826 sv_clear(&PL_sv_yes);
827 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 828 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 829
830 SvREFCNT(&PL_sv_no) = 0;
831 sv_clear(&PL_sv_no);
832 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 833 SvFLAGS(&PL_sv_no) = 0;
01724ea0 834
9f375a43
DM		 835 {
836 int i;
837 for (i=0; i<=2; i++) {
838 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
839 sv_clear(PERL_DEBUG_PAD(i));
840 SvANY(PERL_DEBUG_PAD(i)) = NULL;
841 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
842 }
843 }
844
0453d815 845 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 846 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 847
56a2bab7 848#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 849 /* No more IO - including error messages ! */
850 PerlIO_cleanup(aTHX);
851#endif
852
9f4bd222
NIS		 853 /* sv_undef needs to stay immortal until after PerlIO_cleanup
854 as currently layers use it rather than Nullsv as a marker
855 for no arg - and will try and SvREFCNT_dec it.
856 */
857 SvREFCNT(&PL_sv_undef) = 0;
858 SvREADONLY_off(&PL_sv_undef);
859
3280af22 860 Safefree(PL_origfilename);
3280af22 861 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 862 if (PL_reg_curpm)
863 Safefree(PL_reg_curpm);
82ba1be6 864 Safefree(PL_reg_poscache);
3280af22
NIS		 865 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
866 Safefree(PL_op_mask);
cf36064f
GS		 867 Safefree(PL_psig_ptr);
868 Safefree(PL_psig_name);
2c2666fc 869 Safefree(PL_bitcount);
ce08f86c 870 Safefree(PL_psig_pend);
6e72f9df 871 nuke_stacks();
3280af22 872 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 873
a0d0e21e 874 DEBUG_P(debprofdump());
4d1ff10f 875#ifdef USE_5005THREADS
5f08fbcd 876 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 877 MUTEX_DESTROY(&PL_sv_mutex);
878 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 879 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 880 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 881 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 882#ifdef EMULATE_ATOMIC_REFCOUNTS
883 MUTEX_DESTROY(&PL_svref_mutex);
884#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 885
8023c3ce 886 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 887 Safefree(SvPVX(PL_thrsv));
888 Safefree(SvANY(PL_thrsv));
889 Safefree(PL_thrsv);
890 PL_thrsv = Nullsv;
4d1ff10f 891#endif /* USE_5005THREADS */
d33b2eba 892
e5dd39fc 893#ifdef USE_REENTRANT_API
10bc17b6 894 Perl_reentrant_free(aTHX);
e5dd39fc
AB		 895#endif
896
612f20c3
GS		 897 sv_free_arenas();
898
fc36a67e 899 /* As the absolutely last thing, free the non-arena SV for mess() */
900
3280af22 901 if (PL_mess_sv) {
9c63abab
GS		 902 /* it could have accumulated taint magic */
903 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
904 MAGIC* mg;
905 MAGIC* moremagic;
906 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
907 moremagic = mg->mg_moremagic;
14befaf4
DM		 908 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
909 && mg->mg_len >= 0)
9c63abab
GS		 910 Safefree(mg->mg_ptr);
911 Safefree(mg);
912 }
913 }
fc36a67e 914 /* we know that type >= SVt_PV */
155aba94 915 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 916 Safefree(SvPVX(PL_mess_sv));
917 Safefree(SvANY(PL_mess_sv));
918 Safefree(PL_mess_sv);
919 PL_mess_sv = Nullsv;
fc36a67e 920 }
31d77e54 921 return STATUS_NATIVE_EXPORT;
79072805
LW		 922}
923
954c1994
GS		 924/*
925=for apidoc perl_free
926
927Releases a Perl interpreter. See L<perlembed>.
928
929=cut
930*/
931
79072805 932void
0cb96387 933perl_free(pTHXx)
79072805 934{
acfe0abc 935#if defined(WIN32) || defined(NETWARE)
ce3e5b80 936# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 937# ifdef NETWARE
938 void *host = nw_internal_host;
939# else
940 void *host = w32_internal_host;
941# endif
ce3e5b80 942 PerlMem_free(aTHXx);
acfe0abc 943# ifdef NETWARE
011f1a1a 944 nw_delete_internal_host(host);
acfe0abc
GS		 945# else
946 win32_delete_internal_host(host);
947# endif
1c0ca838
GS		 948# else
949 PerlMem_free(aTHXx);
950# endif
acfe0abc
GS		 951#else
952 PerlMem_free(aTHXx);
76e3520e 953#endif
79072805
LW		 954}
955
4b556e6c 956void
864dbfa3 957Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 958{
3280af22
NIS		 959 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
960 PL_exitlist[PL_exitlistlen].fn = fn;
961 PL_exitlist[PL_exitlistlen].ptr = ptr;
962 ++PL_exitlistlen;
4b556e6c
JD		 963}
964
954c1994
GS		 965/*
966=for apidoc perl_parse
967
968Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
969
970=cut
971*/
972
79072805 973int
0cb96387 974perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 975{
6224f72b 976 I32 oldscope;
6224f72b 977 int ret;
db36c5a1 978 dJMPENV;
4d1ff10f 979#ifdef USE_5005THREADS
cea2e8a9
GS		 980 dTHX;
981#endif
8d063cd8 982
a687059c
LW		 983#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
984#ifdef IAMSUID
985#undef IAMSUID
cea2e8a9 986 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 987setuid perl scripts securely.\n");
988#endif
989#endif
990
3280af22 991 PL_origargc = argc;
bc0a45ed
DM		 992 {
993 /* we copy rather than point to argv
994 * since perl_clone will copy and perl_destruct
3a1ee7e8 995 * has no way of knowing if we've made a copy or
bc0a45ed
DM		 996 * just point to argv
997 */
998 int i = PL_origargc;
999 New(0, PL_origargv, i+1, char*);
1000 PL_origargv[i] = '\0';
1001 while (i-- > 0) {
1002 PL_origargv[i] = savepv(argv[i]);
1003 }
1004 }
1005
0631ea03 1006
a0d0e21e 1007
3280af22 1008 if (PL_do_undump) {
a0d0e21e
LW		 1009
1010 /* Come here if running an undumped a.out. */
1011
3280af22
NIS		 1012 PL_origfilename = savepv(argv[0]);
1013 PL_do_undump = FALSE;
a0d0e21e 1014 cxstack_ix = -1; /* start label stack again */
748a9306 1015 init_ids();
a0d0e21e
LW		 1016 init_postdump_symbols(argc,argv,env);
1017 return 0;
1018 }
1019
3280af22
NIS		 1020 if (PL_main_root) {
1021 PL_curpad = AvARRAY(PL_comppad);
1022 op_free(PL_main_root);
1023 PL_main_root = Nullop;
ff0cee69 1024 }
3280af22
NIS		 1025 PL_main_start = Nullop;
1026 SvREFCNT_dec(PL_main_cv);
1027 PL_main_cv = Nullcv;
79072805 1028
3280af22
NIS		 1029 time(&PL_basetime);
1030 oldscope = PL_scopestack_ix;
599cee73 1031 PL_dowarn = G_WARN_OFF;
f86702cc 1032
14dd3ad8
GS		 1033#ifdef PERL_FLEXIBLE_EXCEPTIONS
1034 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1035#else
1036 JMPENV_PUSH(ret);
1037#endif
6224f72b 1038 switch (ret) {
312caa8e 1039 case 0:
14dd3ad8
GS		 1040#ifndef PERL_FLEXIBLE_EXCEPTIONS
1041 parse_body(env,xsinit);
1042#endif
7d30b5c4
GS		 1043 if (PL_checkav)
1044 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1045 ret = 0;
1046 break;
6224f72b
GS		 1047 case 1:
1048 STATUS_ALL_FAILURE;
1049 /* FALL THROUGH */
1050 case 2:
1051 /* my_exit() was called */
3280af22 1052 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1053 LEAVE;
1054 FREETMPS;
3280af22 1055 PL_curstash = PL_defstash;
7d30b5c4
GS		 1056 if (PL_checkav)
1057 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1058 ret = STATUS_NATIVE_EXPORT;
1059 break;
6224f72b 1060 case 3:
bf49b057 1061 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1062 ret = 1;
1063 break;
6224f72b 1064 }
14dd3ad8
GS		 1065 JMPENV_POP;
1066 return ret;
1067}
1068
1069#ifdef PERL_FLEXIBLE_EXCEPTIONS
1070STATIC void *
1071S_vparse_body(pTHX_ va_list args)
1072{
1073 char **env = va_arg(args, char**);
1074 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1075
1076 return parse_body(env, xsinit);
312caa8e 1077}
14dd3ad8 1078#endif
312caa8e
CS		 1079
1080STATIC void *
14dd3ad8 1081S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1082{
312caa8e
CS		 1083 int argc = PL_origargc;
1084 char **argv = PL_origargv;
312caa8e
CS		 1085 char *scriptname = NULL;
1086 int fdscript = -1;
1087 VOL bool dosearch = FALSE;
1088 char *validarg = "";
1089 AV* comppadlist;
1090 register SV *sv;
1091 register char *s;
cf756827 1092 char *cddir = Nullch;
312caa8e 1093
3280af22 1094 sv_setpvn(PL_linestr,"",0);
79cb57f6 1095 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1096 SAVEFREESV(sv);
1097 init_main_stash();
54310121 1098
6224f72b
GS		 1099 for (argc--,argv++; argc > 0; argc--,argv++) {
1100 if (argv[0][0] != '-' || !argv[0][1])
1101 break;
1102#ifdef DOSUID
1103 if (*validarg)
1104 validarg = " PHOOEY ";
1105 else
1106 validarg = argv[0];
13281fa4 1107#endif
6224f72b
GS		 1108 s = argv[0]+1;
1109 reswitch:
1110 switch (*s) {
729a02f2
GS		 1111 case 'C':
1112#ifdef WIN32
c0932edc 1113 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1114 /* FALL THROUGH */
1115#endif
1d5472a9
GS		 1116#ifndef PERL_STRICT_CR
1117 case '\r':
1118#endif
6224f72b
GS		 1119 case ' ':
1120 case '0':
1121 case 'F':
1122 case 'a':
1123 case 'c':
1124 case 'd':
1125 case 'D':
1126 case 'h':
1127 case 'i':
1128 case 'l':
1129 case 'M':
1130 case 'm':
1131 case 'n':
1132 case 'p':
1133 case 's':
1134 case 'u':
1135 case 'U':
1136 case 'v':
599cee73
PM		 1137 case 'W':
1138 case 'X':
6224f72b 1139 case 'w':
155aba94 1140 if ((s = moreswitches(s)))
6224f72b
GS		 1141 goto reswitch;
1142 break;
33b78306 1143
1dbad523 1144 case 't':
317ea90d
MS		 1145 if( !PL_tainting ) {
1146 PL_taint_warn = TRUE;
1147 PL_tainting = TRUE;
1148 }
1149 s++;
1150 goto reswitch;
6224f72b 1151 case 'T':
3280af22 1152 PL_tainting = TRUE;
317ea90d 1153 PL_taint_warn = FALSE;
6224f72b
GS		 1154 s++;
1155 goto reswitch;
f86702cc 1156
6224f72b 1157 case 'e':
bf4acbe4
GS		 1158#ifdef MACOS_TRADITIONAL
1159 /* ignore -e for Dev:Pseudo argument */
1160 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1161 break;
bf4acbe4 1162#endif
3280af22 1163 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1164 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1165 if (!PL_e_script) {
79cb57f6 1166 PL_e_script = newSVpvn("",0);
0cb96387 1167 filter_add(read_e_script, NULL);
6224f72b
GS		 1168 }
1169 if (*++s)
3280af22 1170 sv_catpv(PL_e_script, s);
6224f72b 1171 else if (argv[1]) {
3280af22 1172 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1173 argc--,argv++;
1174 }
1175 else
cea2e8a9 1176 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1177 sv_catpv(PL_e_script, "\n");
6224f72b 1178 break;
afe37c7d 1179
6224f72b
GS		 1180 case 'I': /* -I handled both here and in moreswitches() */
1181 forbid_setid("-I");
1182 if (!*++s && (s=argv[1]) != Nullch) {
1183 argc--,argv++;
1184 }
6224f72b 1185 if (s && *s) {
0df16ed7
GS		 1186 char *p;
1187 STRLEN len = strlen(s);
1188 p = savepvn(s, len);
9c8a64f0 1189 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1190 sv_catpvn(sv, "-I", 2);
1191 sv_catpvn(sv, p, len);
1192 sv_catpvn(sv, " ", 1);
6224f72b 1193 Safefree(p);
0df16ed7
GS		 1194 }
1195 else
a67e862a 1196 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1197 break;
1198 case 'P':
1199 forbid_setid("-P");
3280af22 1200 PL_preprocess = TRUE;
6224f72b
GS		 1201 s++;
1202 goto reswitch;
1203 case 'S':
1204 forbid_setid("-S");
1205 dosearch = TRUE;
1206 s++;
1207 goto reswitch;
1208 case 'V':
3280af22
NIS		 1209 if (!PL_preambleav)
1210 PL_preambleav = newAV();
1211 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1212 if (*++s != ':') {
3280af22 1213 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1214#ifdef VMS
6b88bc9c 1215 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1216#else
3280af22 1217 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1218#endif
3280af22 1219 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1220# ifdef DEBUGGING
3280af22 1221 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1222# endif
6224f72b 1223# ifdef MULTIPLICITY
8f872242 1224 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1225# endif
4d1ff10f
AB		 1226# ifdef USE_5005THREADS
1227 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1228# endif
ac5e8965
JH		 1229# ifdef USE_ITHREADS
1230 sv_catpv(PL_Sv," USE_ITHREADS");
1231# endif
10cc9d2a
JH		 1232# ifdef USE_64_BIT_INT
1233 sv_catpv(PL_Sv," USE_64_BIT_INT");
1234# endif
1235# ifdef USE_64_BIT_ALL
1236 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1237# endif
1238# ifdef USE_LONG_DOUBLE
1239 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1240# endif
53430762
JH		 1241# ifdef USE_LARGE_FILES
1242 sv_catpv(PL_Sv," USE_LARGE_FILES");
1243# endif
ac5e8965
JH		 1244# ifdef USE_SOCKS
1245 sv_catpv(PL_Sv," USE_SOCKS");
1246# endif
b363f7ed
GS		 1247# ifdef PERL_IMPLICIT_CONTEXT
1248 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1249# endif
1250# ifdef PERL_IMPLICIT_SYS
1251 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1252# endif
3280af22 1253 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1254
6224f72b
GS		 1255#if defined(LOCAL_PATCH_COUNT)
1256 if (LOCAL_PATCH_COUNT > 0) {
1257 int i;
3280af22 1258 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1259 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1260 if (PL_localpatches[i])
cea2e8a9 1261 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1262 }
1263 }
1264#endif
cea2e8a9 1265 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1266#ifdef __DATE__
1267# ifdef __TIME__
cea2e8a9 1268 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1269# else
cea2e8a9 1270 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1271# endif
1272#endif
3280af22 1273 sv_catpv(PL_Sv, "; \
6224f72b 1274$\"=\"\\n \"; \
69fcd688
JH		 1275@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1276#ifdef __CYGWIN__
1277 sv_catpv(PL_Sv,"\
1278push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1279#endif
1280 sv_catpv(PL_Sv, "\
6224f72b
GS		 1281print \" \\%ENV:\\n @env\\n\" if @env; \
1282print \" \\@INC:\\n @INC\\n\";");
1283 }
1284 else {
3280af22
NIS		 1285 PL_Sv = newSVpv("config_vars(qw(",0);
1286 sv_catpv(PL_Sv, ++s);
1287 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1288 s += strlen(s);
1289 }
3280af22 1290 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1291 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1292 goto reswitch;
1293 case 'x':
3280af22 1294 PL_doextract = TRUE;
6224f72b
GS		 1295 s++;
1296 if (*s)
f4c556ac 1297 cddir = s;
6224f72b
GS		 1298 break;
1299 case 0:
1300 break;
1301 case '-':
1302 if (!*++s || isSPACE(*s)) {
1303 argc--,argv++;
1304 goto switch_end;
1305 }
1306 /* catch use of gnu style long options */
1307 if (strEQ(s, "version")) {
1308 s = "v";
1309 goto reswitch;
1310 }
1311 if (strEQ(s, "help")) {
1312 s = "h";
1313 goto reswitch;
1314 }
1315 s--;
1316 /* FALL THROUGH */
1317 default:
cea2e8a9 1318 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1319 }
1320 }
6224f72b 1321 switch_end:
54310121 1322
f675dbe5
CB		 1323 if (
1324#ifndef SECURE_INTERNAL_GETENV
1325 !PL_tainting &&
1326#endif
cf756827 1327 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1328 {
cf756827 1329 char *popt = s;
74288ac8
GS		 1330 while (isSPACE(*s))
1331 s++;
317ea90d 1332 if (*s == '-' && *(s+1) == 'T') {
74288ac8 1333 PL_tainting = TRUE;
317ea90d
MS		 1334 PL_taint_warn = FALSE;
1335 }
74288ac8 1336 else {
cf756827 1337 char *popt_copy = Nullch;
74288ac8 1338 while (s && *s) {
4ea8f8fb 1339 char *d;
74288ac8
GS		 1340 while (isSPACE(*s))
1341 s++;
1342 if (*s == '-') {
1343 s++;
1344 if (isSPACE(*s))
1345 continue;
1346 }
4ea8f8fb 1347 d = s;
74288ac8
GS		 1348 if (!*s)
1349 break;
1c4db469 1350 if (!strchr("DIMUdmtw", *s))
cea2e8a9 1351 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1352 while (++s && *s) {
1353 if (isSPACE(*s)) {
cf756827
GS		 1354 if (!popt_copy) {
1355 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1356 s = popt_copy + (s - popt);
1357 d = popt_copy + (d - popt);
1358 }
4ea8f8fb
MS		 1359 *s++ = '\0';
1360 break;
1361 }
1362 }
1c4db469 1363 if (*d == 't') {
317ea90d
MS		 1364 if( !PL_tainting ) {
1365 PL_taint_warn = TRUE;
1366 PL_tainting = TRUE;
1367 }
1c4db469
RGS		 1368 } else {
1369 moreswitches(d);
1370 }
6224f72b 1371 }
6224f72b
GS		 1372 }
1373 }
a0d0e21e 1374
317ea90d
MS		 1375 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1376 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1377 }
1378
6224f72b
GS		 1379 if (!scriptname)
1380 scriptname = argv[0];
3280af22 1381 if (PL_e_script) {
6224f72b
GS		 1382 argc++,argv--;
1383 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1384 }
1385 else if (scriptname == Nullch) {
1386#ifdef MSDOS
1387 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1388 moreswitches("h");
1389#endif
1390 scriptname = "-";
1391 }
1392
1393 init_perllib();
1394
1395 open_script(scriptname,dosearch,sv,&fdscript);
1396
1397 validate_suid(validarg, scriptname,fdscript);
1398
64ca3a65 1399#ifndef PERL_MICRO
0b5b802d
GS		 1400#if defined(SIGCHLD) || defined(SIGCLD)
1401 {
1402#ifndef SIGCHLD
1403# define SIGCHLD SIGCLD
1404#endif
1405 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1406 if (sigstate == SIG_IGN) {
1407 if (ckWARN(WARN_SIGNAL))
9014280d 1408 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS		 1409 "Can't ignore signal CHLD, forcing to default");
1410 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1411 }
1412 }
1413#endif
64ca3a65 1414#endif
0b5b802d 1415
bf4acbe4
GS		 1416#ifdef MACOS_TRADITIONAL
1417 if (PL_doextract || gMacPerl_AlwaysExtract) {
1418#else
f4c556ac 1419 if (PL_doextract) {
bf4acbe4 1420#endif
6224f72b 1421 find_beginning();
f4c556ac
GS		 1422 if (cddir && PerlDir_chdir(cddir) < 0)
1423 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1424
1425 }
6224f72b 1426
3280af22
NIS		 1427 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1428 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1429 CvUNIQUE_on(PL_compcv);
1430
1431 PL_comppad = newAV();
1432 av_push(PL_comppad, Nullsv);
1433 PL_curpad = AvARRAY(PL_comppad);
1434 PL_comppad_name = newAV();
1435 PL_comppad_name_fill = 0;
1436 PL_min_intro_pending = 0;
1437 PL_padix = 0;
4d1ff10f 1438#ifdef USE_5005THREADS
79cb57f6 1439 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1440 PL_curpad[0] = (SV*)newAV();
1441 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1442 CvOWNER(PL_compcv) = 0;
1443 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1444 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1445#endif /* USE_5005THREADS */
6224f72b
GS		 1446
1447 comppadlist = newAV();
1448 AvREAL_off(comppadlist);
3280af22
NIS		 1449 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1450 av_store(comppadlist, 1, (SV*)PL_comppad);
1451 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1452
0c4f7ff0 1453 boot_core_PerlIO();
6224f72b 1454 boot_core_UNIVERSAL();
9a34ef1d 1455#ifndef PERL_MICRO
09bef843 1456 boot_core_xsutils();
9a34ef1d 1457#endif
6224f72b
GS		 1458
1459 if (xsinit)
acfe0abc 1460 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1461#ifndef PERL_MICRO
ed79a026 1462#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1463 init_os_extras();
6224f72b 1464#endif
64ca3a65 1465#endif
6224f72b 1466
29209bc5 1467#ifdef USE_SOCKS
1b9c9cf5
DH		 1468# ifdef HAS_SOCKS5_INIT
1469 socks5_init(argv[0]);
1470# else
29209bc5 1471 SOCKSinit(argv[0]);
1b9c9cf5 1472# endif
ac27b0f5 1473#endif
29209bc5 1474
6224f72b
GS		 1475 init_predump_symbols();
1476 /* init_postdump_symbols not currently designed to be called */
1477 /* more than once (ENV isn't cleared first, for example) */
1478 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1479 if (!PL_do_undump)
6224f72b
GS		 1480 init_postdump_symbols(argc,argv,env);
1481
085a54d9
JH		 1482 /* PL_wantutf8 is conditionally turned on by
1483 * locale.c:Perl_init_i18nl10n() if the environment
1484 * look like the user wants to use UTF-8. */
b310b053
JH		 1485 if (PL_wantutf8) { /* Requires init_predump_symbols(). */
1486 IO* io;
1487 PerlIO* fp;
1488 SV* sv;
085a54d9
JH		 1489 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1490 * _and_ the default open discipline. */
b310b053
JH		 1491 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1492 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1493 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1494 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1495 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1496 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1497 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1498 sv_setpvn(sv, ":utf8\0:utf8", 11);
1499 SvSETMAGIC(sv);
1500 }
1501 }
1502
6224f72b
GS		 1503 init_lexer();
1504
1505 /* now parse the script */
1506
91487cfc 1507 SETERRNO(0,SS$_NORMAL);
3280af22 1508 PL_error_count = 0;
bf4acbe4
GS		 1509#ifdef MACOS_TRADITIONAL
1510 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1511 if (PL_minus_c)
1512 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1513 else {
1514 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1515 MacPerl_MPWFileName(PL_origfilename));
1516 }
1517 }
1518#else
3280af22
NIS		 1519 if (yyparse() || PL_error_count) {
1520 if (PL_minus_c)
cea2e8a9 1521 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1522 else {
cea2e8a9 1523 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1524 PL_origfilename);
6224f72b
GS		 1525 }
1526 }
bf4acbe4 1527#endif
57843af0 1528 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1529 PL_curstash = PL_defstash;
1530 PL_preprocess = FALSE;
1531 if (PL_e_script) {
1532 SvREFCNT_dec(PL_e_script);
1533 PL_e_script = Nullsv;
6224f72b
GS		 1534 }
1535
8bfdd7d9
HS		 1536/*
1537 Not sure that this is still the right place to do this now that we
1538 no longer use PL_nrs. HVDS 2001/09/09
1539*/
864dbfa3 1540 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1541
3280af22 1542 if (PL_do_undump)
6224f72b
GS		 1543 my_unexec();
1544
57843af0
GS		 1545 if (isWARN_ONCE) {
1546 SAVECOPFILE(PL_curcop);
1547 SAVECOPLINE(PL_curcop);
3280af22 1548 gv_check(PL_defstash);
57843af0 1549 }
6224f72b
GS		 1550
1551 LEAVE;
1552 FREETMPS;
1553
1554#ifdef MYMALLOC
1555 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1556 dump_mstats("after compilation:");
1557#endif
1558
1559 ENTER;
3280af22 1560 PL_restartop = 0;
312caa8e 1561 return NULL;
6224f72b
GS		 1562}
1563
954c1994
GS		 1564/*
1565=for apidoc perl_run
1566
1567Tells a Perl interpreter to run. See L<perlembed>.
1568
1569=cut
1570*/
1571
6224f72b 1572int
0cb96387 1573perl_run(pTHXx)
6224f72b 1574{
6224f72b 1575 I32 oldscope;
14dd3ad8 1576 int ret = 0;
db36c5a1 1577 dJMPENV;
4d1ff10f 1578#ifdef USE_5005THREADS
cea2e8a9
GS		 1579 dTHX;
1580#endif
6224f72b 1581
3280af22 1582 oldscope = PL_scopestack_ix;
96e176bf
CL		 1583#ifdef VMS
1584 VMSISH_HUSHED = 0;
1585#endif
6224f72b 1586
14dd3ad8 1587#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1588 redo_body:
14dd3ad8
GS		 1589 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1590#else
1591 JMPENV_PUSH(ret);
1592#endif
6224f72b
GS		 1593 switch (ret) {
1594 case 1:
1595 cxstack_ix = -1; /* start context stack again */
312caa8e 1596 goto redo_body;
14dd3ad8
GS		 1597 case 0: /* normal completion */
1598#ifndef PERL_FLEXIBLE_EXCEPTIONS
1599 redo_body:
1600 run_body(oldscope);
1601#endif
1602 /* FALL THROUGH */
1603 case 2: /* my_exit() */
3280af22 1604 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1605 LEAVE;
1606 FREETMPS;
3280af22 1607 PL_curstash = PL_defstash;
3a1ee7e8 1608 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB		 1609 PL_endav && !PL_minus_c)
1610 call_list(oldscope, PL_endav);
6224f72b
GS		 1611#ifdef MYMALLOC
1612 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1613 dump_mstats("after execution: ");
1614#endif
14dd3ad8
GS		 1615 ret = STATUS_NATIVE_EXPORT;
1616 break;
6224f72b 1617 case 3:
312caa8e
CS		 1618 if (PL_restartop) {
1619 POPSTACK_TO(PL_mainstack);
1620 goto redo_body;
6224f72b 1621 }
bf49b057 1622 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1623 FREETMPS;
14dd3ad8
GS		 1624 ret = 1;
1625 break;
6224f72b
GS		 1626 }
1627
14dd3ad8
GS		 1628 JMPENV_POP;
1629 return ret;
312caa8e
CS		 1630}
1631
14dd3ad8 1632#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1633STATIC void *
14dd3ad8 1634S_vrun_body(pTHX_ va_list args)
312caa8e 1635{
312caa8e
CS		 1636 I32 oldscope = va_arg(args, I32);
1637
14dd3ad8
GS		 1638 return run_body(oldscope);
1639}
1640#endif
1641
1642
1643STATIC void *
1644S_run_body(pTHX_ I32 oldscope)
1645{
6224f72b 1646 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1647 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1648
3280af22 1649 if (!PL_restartop) {
6224f72b
GS		 1650 DEBUG_x(dump_all());
1651 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1652 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1653 PTR2UV(thr)));
6224f72b 1654
3280af22 1655 if (PL_minus_c) {
bf4acbe4 1656#ifdef MACOS_TRADITIONAL
e69a2255
JH		 1657 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1658 (gMacPerl_ErrorFormat ? "# " : ""),
1659 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1660#else
bf49b057 1661 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1662#endif
6224f72b
GS		 1663 my_exit(0);
1664 }
3280af22 1665 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1666 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1667 if (PL_initav)
1668 call_list(oldscope, PL_initav);
6224f72b
GS		 1669 }
1670
1671 /* do it */
1672
3280af22 1673 if (PL_restartop) {
533c011a 1674 PL_op = PL_restartop;
3280af22 1675 PL_restartop = 0;
cea2e8a9 1676 CALLRUNOPS(aTHX);
6224f72b 1677 }
3280af22
NIS		 1678 else if (PL_main_start) {
1679 CvDEPTH(PL_main_cv) = 1;
533c011a 1680 PL_op = PL_main_start;
cea2e8a9 1681 CALLRUNOPS(aTHX);
6224f72b
GS		 1682 }
1683
f6b3007c
JH		 1684 my_exit(0);
1685 /* NOTREACHED */
312caa8e 1686 return NULL;
6224f72b
GS		 1687}
1688
954c1994 1689/*
ccfc67b7
JH		 1690=head1 SV Manipulation Functions
1691
954c1994
GS		 1692=for apidoc p||get_sv
1693
1694Returns the SV of the specified Perl scalar. If C<create> is set and the
1695Perl variable does not exist then it will be created. If C<create> is not
1696set and the variable does not exist then NULL is returned.
1697
1698=cut
1699*/
1700
6224f72b 1701SV*
864dbfa3 1702Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1703{
1704 GV *gv;
4d1ff10f 1705#ifdef USE_5005THREADS
6224f72b
GS		 1706 if (name[1] == '\0' && !isALPHA(name[0])) {
1707 PADOFFSET tmp = find_threadsv(name);
411caa50 1708 if (tmp != NOT_IN_PAD)
6224f72b 1709 return THREADSV(tmp);
6224f72b 1710 }
4d1ff10f 1711#endif /* USE_5005THREADS */
6224f72b
GS		 1712 gv = gv_fetchpv(name, create, SVt_PV);
1713 if (gv)
1714 return GvSV(gv);
1715 return Nullsv;
1716}
1717
954c1994 1718/*
ccfc67b7
JH		 1719=head1 Array Manipulation Functions
1720
954c1994
GS		 1721=for apidoc p||get_av
1722
1723Returns the AV of the specified Perl array. If C<create> is set and the
1724Perl variable does not exist then it will be created. If C<create> is not
1725set and the variable does not exist then NULL is returned.
1726
1727=cut
1728*/
1729
6224f72b 1730AV*
864dbfa3 1731Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1732{
1733 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1734 if (create)
1735 return GvAVn(gv);
1736 if (gv)
1737 return GvAV(gv);
1738 return Nullav;
1739}
1740
954c1994 1741/*
ccfc67b7
JH		 1742=head1 Hash Manipulation Functions
1743
954c1994
GS		 1744=for apidoc p||get_hv
1745
1746Returns the HV of the specified Perl hash. If C<create> is set and the
1747Perl variable does not exist then it will be created. If C<create> is not
1748set and the variable does not exist then NULL is returned.
1749
1750=cut
1751*/
1752
6224f72b 1753HV*
864dbfa3 1754Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1755{
a0d0e21e
LW		 1756 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1757 if (create)
1758 return GvHVn(gv);
1759 if (gv)
1760 return GvHV(gv);
1761 return Nullhv;
1762}
1763
954c1994 1764/*
ccfc67b7
JH		 1765=head1 CV Manipulation Functions
1766
954c1994
GS		 1767=for apidoc p||get_cv
1768
1769Returns the CV of the specified Perl subroutine. If C<create> is set and
1770the Perl subroutine does not exist then it will be declared (which has the
1771same effect as saying C<sub name;>). If C<create> is not set and the
1772subroutine does not exist then NULL is returned.
1773
1774=cut
1775*/
1776
a0d0e21e 1777CV*
864dbfa3 1778Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1779{
1780 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1781 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1782 /* XXX this is probably not what they think they're getting.
1783 * It has the same effect as "sub name;", i.e. just a forward
1784 * declaration! */
8ebc5c01 1785 if (create && !GvCVu(gv))
774d564b 1786 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1787 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1788 Nullop,
a0d0e21e
LW		 1789 Nullop);
1790 if (gv)
8ebc5c01 1791 return GvCVu(gv);
a0d0e21e
LW		 1792 return Nullcv;
1793}
1794
79072805
LW		 1795/* Be sure to refetch the stack pointer after calling these routines. */
1796
954c1994 1797/*
ccfc67b7
JH		 1798
1799=head1 Callback Functions
1800
954c1994
GS		 1801=for apidoc p||call_argv
1802
1803Performs a callback to the specified Perl sub. See L<perlcall>.
1804
1805=cut
1806*/
1807
a0d0e21e 1808I32
864dbfa3 1809Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1810
8ac85365
NIS		 1811 /* See G_* flags in cop.h */
1812 /* null terminated arg list */
8990e307 1813{
a0d0e21e 1814 dSP;
8990e307 1815
924508f0 1816 PUSHMARK(SP);
a0d0e21e 1817 if (argv) {
8990e307 1818 while (*argv) {
a0d0e21e 1819 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1820 argv++;
1821 }
a0d0e21e 1822 PUTBACK;
8990e307 1823 }
864dbfa3 1824 return call_pv(sub_name, flags);
8990e307
LW		 1825}
1826
954c1994
GS		 1827/*
1828=for apidoc p||call_pv
1829
1830Performs a callback to the specified Perl sub. See L<perlcall>.
1831
1832=cut
1833*/
1834
a0d0e21e 1835I32
864dbfa3 1836Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1837 /* name of the subroutine */
1838 /* See G_* flags in cop.h */
a0d0e21e 1839{
864dbfa3 1840 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1841}
1842
954c1994
GS		 1843/*
1844=for apidoc p||call_method
1845
1846Performs a callback to the specified Perl method. The blessed object must
1847be on the stack. See L<perlcall>.
1848
1849=cut
1850*/
1851
a0d0e21e 1852I32
864dbfa3 1853Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1854 /* name of the subroutine */
1855 /* See G_* flags in cop.h */
a0d0e21e 1856{
968b3946 1857 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1858}
1859
1860/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1861/*
1862=for apidoc p||call_sv
1863
1864Performs a callback to the Perl sub whose name is in the SV. See
1865L<perlcall>.
1866
1867=cut
1868*/
1869
a0d0e21e 1870I32
864dbfa3 1871Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1872 /* See G_* flags in cop.h */
a0d0e21e 1873{
924508f0 1874 dSP;
a0d0e21e 1875 LOGOP myop; /* fake syntax tree node */
968b3946 1876 UNOP method_op;
aa689395 1877 I32 oldmark;
13689cfe 1878 volatile I32 retval = 0;
a0d0e21e 1879 I32 oldscope;
54310121 1880 bool oldcatch = CATCH_GET;
6224f72b 1881 int ret;
533c011a 1882 OP* oldop = PL_op;
db36c5a1 1883 dJMPENV;
1e422769 1884
a0d0e21e
LW		 1885 if (flags & G_DISCARD) {
1886 ENTER;
1887 SAVETMPS;
1888 }
1889
aa689395 1890 Zero(&myop, 1, LOGOP);
54310121 1891 myop.op_next = Nullop;
f51d4af5 1892 if (!(flags & G_NOARGS))
aa689395 1893 myop.op_flags |= OPf_STACKED;
54310121 1894 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1895 (flags & G_ARRAY) ? OPf_WANT_LIST :
1896 OPf_WANT_SCALAR);
462e5cf6 1897 SAVEOP();
533c011a 1898 PL_op = (OP*)&myop;
aa689395 1899
3280af22
NIS		 1900 EXTEND(PL_stack_sp, 1);
1901 *++PL_stack_sp = sv;
aa689395 1902 oldmark = TOPMARK;
3280af22 1903 oldscope = PL_scopestack_ix;
a0d0e21e 1904
3280af22 1905 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1906 /* Handle first BEGIN of -d. */
3280af22 1907 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1908 /* Try harder, since this may have been a sighandler, thus
1909 * curstash may be meaningless. */
3280af22 1910 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1911 && !(flags & G_NODEBUG))
533c011a 1912 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1913
968b3946
GS		 1914 if (flags & G_METHOD) {
1915 Zero(&method_op, 1, UNOP);
1916 method_op.op_next = PL_op;
1917 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1918 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1919 PL_op = (OP*)&method_op;
968b3946
GS		 1920 }
1921
312caa8e 1922 if (!(flags & G_EVAL)) {
0cdb2077 1923 CATCH_SET(TRUE);
14dd3ad8 1924 call_body((OP*)&myop, FALSE);
312caa8e 1925 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1926 CATCH_SET(oldcatch);
312caa8e
CS		 1927 }
1928 else {
d78bda3d 1929 myop.op_other = (OP*)&myop;
3280af22 1930 PL_markstack_ptr--;
4633a7c4
LW		 1931 /* we're trying to emulate pp_entertry() here */
1932 {
c09156bb 1933 register PERL_CONTEXT *cx;
54310121 1934 I32 gimme = GIMME_V;
ac27b0f5 1935
4633a7c4
LW		 1936 ENTER;
1937 SAVETMPS;
ac27b0f5 1938
968b3946 1939 push_return(Nullop);
1d76a5c3 1940 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1941 PUSHEVAL(cx, 0, 0);
533c011a 1942 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1943
faef0170 1944 PL_in_eval = EVAL_INEVAL;
4633a7c4 1945 if (flags & G_KEEPERR)
faef0170 1946 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1947 else
38a03e6e 1948 sv_setpv(ERRSV,"");
4633a7c4 1949 }
3280af22 1950 PL_markstack_ptr++;
a0d0e21e 1951
14dd3ad8
GS		 1952#ifdef PERL_FLEXIBLE_EXCEPTIONS
1953 redo_body:
1954 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1955 (OP*)&myop, FALSE);
14dd3ad8
GS		 1956#else
1957 JMPENV_PUSH(ret);
1958#endif
6224f72b
GS		 1959 switch (ret) {
1960 case 0:
14dd3ad8
GS		 1961#ifndef PERL_FLEXIBLE_EXCEPTIONS
1962 redo_body:
1963 call_body((OP*)&myop, FALSE);
1964#endif
312caa8e
CS		 1965 retval = PL_stack_sp - (PL_stack_base + oldmark);
1966 if (!(flags & G_KEEPERR))
1967 sv_setpv(ERRSV,"");
a0d0e21e 1968 break;
6224f72b 1969 case 1:
f86702cc 1970 STATUS_ALL_FAILURE;
a0d0e21e 1971 /* FALL THROUGH */
6224f72b 1972 case 2:
a0d0e21e 1973 /* my_exit() was called */
3280af22 1974 PL_curstash = PL_defstash;
a0d0e21e 1975 FREETMPS;
14dd3ad8 1976 JMPENV_POP;
cc3604b1 1977 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1978 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1979 my_exit_jump();
a0d0e21e 1980 /* NOTREACHED */
6224f72b 1981 case 3:
3280af22 1982 if (PL_restartop) {
533c011a 1983 PL_op = PL_restartop;
3280af22 1984 PL_restartop = 0;
312caa8e 1985 goto redo_body;
a0d0e21e 1986 }
3280af22 1987 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1988 if (flags & G_ARRAY)
1989 retval = 0;
1990 else {
1991 retval = 1;
3280af22 1992 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1993 }
312caa8e 1994 break;
a0d0e21e 1995 }
a0d0e21e 1996
3280af22 1997 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1998 SV **newsp;
1999 PMOP *newpm;
2000 I32 gimme;
c09156bb 2001 register PERL_CONTEXT *cx;
a0a2876f
LW		 2002 I32 optype;
2003
2004 POPBLOCK(cx,newpm);
2005 POPEVAL(cx);
2006 pop_return();
3280af22 2007 PL_curpm = newpm;
a0a2876f 2008 LEAVE;
a0d0e21e 2009 }
14dd3ad8 2010 JMPENV_POP;
a0d0e21e 2011 }
1e422769 2012
a0d0e21e 2013 if (flags & G_DISCARD) {
3280af22 2014 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2015 retval = 0;
2016 FREETMPS;
2017 LEAVE;
2018 }
533c011a 2019 PL_op = oldop;
a0d0e21e
LW		 2020 return retval;
2021}
2022
14dd3ad8 2023#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 2024STATIC void *
14dd3ad8 2025S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 2026{
2027 OP *myop = va_arg(args, OP*);
2028 int is_eval = va_arg(args, int);
2029
14dd3ad8 2030 call_body(myop, is_eval);
312caa8e
CS		 2031 return NULL;
2032}
14dd3ad8 2033#endif
312caa8e
CS		 2034
2035STATIC void
14dd3ad8 2036S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 2037{
312caa8e
CS		 2038 if (PL_op == myop) {
2039 if (is_eval)
f807eda9 2040 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2041 else
f807eda9 2042 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 2043 }
2044 if (PL_op)
cea2e8a9 2045 CALLRUNOPS(aTHX);
312caa8e
CS		 2046}
2047
6e72f9df 2048/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2049
954c1994
GS		 2050/*
2051=for apidoc p||eval_sv
2052
2053Tells Perl to C<eval> the string in the SV.
2054
2055=cut
2056*/
2057
a0d0e21e 2058I32
864dbfa3 2059Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2060
8ac85365 2061 /* See G_* flags in cop.h */
a0d0e21e 2062{
924508f0 2063 dSP;
a0d0e21e 2064 UNOP myop; /* fake syntax tree node */
8fa7f367 2065 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2066 volatile I32 retval = 0;
4633a7c4 2067 I32 oldscope;
6224f72b 2068 int ret;
533c011a 2069 OP* oldop = PL_op;
db36c5a1 2070 dJMPENV;
84902520 2071
4633a7c4
LW		 2072 if (flags & G_DISCARD) {
2073 ENTER;
2074 SAVETMPS;
2075 }
2076
462e5cf6 2077 SAVEOP();
533c011a
NIS		 2078 PL_op = (OP*)&myop;
2079 Zero(PL_op, 1, UNOP);
3280af22
NIS		 2080 EXTEND(PL_stack_sp, 1);
2081 *++PL_stack_sp = sv;
2082 oldscope = PL_scopestack_ix;
79072805 2083
4633a7c4
LW		 2084 if (!(flags & G_NOARGS))
2085 myop.op_flags = OPf_STACKED;
79072805 2086 myop.op_next = Nullop;
6e72f9df 2087 myop.op_type = OP_ENTEREVAL;
54310121 2088 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2089 (flags & G_ARRAY) ? OPf_WANT_LIST :
2090 OPf_WANT_SCALAR);
6e72f9df 2091 if (flags & G_KEEPERR)
2092 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2093
14dd3ad8 2094#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 2095 redo_body:
14dd3ad8 2096 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 2097 (OP*)&myop, TRUE);
14dd3ad8
GS		 2098#else
2099 JMPENV_PUSH(ret);
2100#endif
6224f72b
GS		 2101 switch (ret) {
2102 case 0:
14dd3ad8
GS		 2103#ifndef PERL_FLEXIBLE_EXCEPTIONS
2104 redo_body:
2105 call_body((OP*)&myop,TRUE);
2106#endif
312caa8e
CS		 2107 retval = PL_stack_sp - (PL_stack_base + oldmark);
2108 if (!(flags & G_KEEPERR))
2109 sv_setpv(ERRSV,"");
4633a7c4 2110 break;
6224f72b 2111 case 1:
f86702cc 2112 STATUS_ALL_FAILURE;
4633a7c4 2113 /* FALL THROUGH */
6224f72b 2114 case 2:
4633a7c4 2115 /* my_exit() was called */
3280af22 2116 PL_curstash = PL_defstash;
4633a7c4 2117 FREETMPS;
14dd3ad8 2118 JMPENV_POP;
cc3604b1 2119 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2120 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2121 my_exit_jump();
4633a7c4 2122 /* NOTREACHED */
6224f72b 2123 case 3:
3280af22 2124 if (PL_restartop) {
533c011a 2125 PL_op = PL_restartop;
3280af22 2126 PL_restartop = 0;
312caa8e 2127 goto redo_body;
4633a7c4 2128 }
3280af22 2129 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2130 if (flags & G_ARRAY)
2131 retval = 0;
2132 else {
2133 retval = 1;
3280af22 2134 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2135 }
312caa8e 2136 break;
4633a7c4
LW		 2137 }
2138
14dd3ad8 2139 JMPENV_POP;
4633a7c4 2140 if (flags & G_DISCARD) {
3280af22 2141 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2142 retval = 0;
2143 FREETMPS;
2144 LEAVE;
2145 }
533c011a 2146 PL_op = oldop;
4633a7c4
LW		 2147 return retval;
2148}
2149
954c1994
GS		 2150/*
2151=for apidoc p||eval_pv
2152
2153Tells Perl to C<eval> the given string and return an SV* result.
2154
2155=cut
2156*/
2157
137443ea 2158SV*
864dbfa3 2159Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2160{
2161 dSP;
2162 SV* sv = newSVpv(p, 0);
2163
864dbfa3 2164 eval_sv(sv, G_SCALAR);
137443ea 2165 SvREFCNT_dec(sv);
2166
2167 SPAGAIN;
2168 sv = POPs;
2169 PUTBACK;
2170
2d8e6c8d
GS		 2171 if (croak_on_error && SvTRUE(ERRSV)) {
2172 STRLEN n_a;
cea2e8a9 2173 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2174 }
137443ea 2175
2176 return sv;
2177}
2178
4633a7c4
LW		 2179/* Require a module. */
2180
954c1994 2181/*
ccfc67b7
JH		 2182=head1 Embedding Functions
2183
954c1994
GS		 2184=for apidoc p||require_pv
2185
7d3fb230
BS		 2186Tells Perl to C<require> the file named by the string argument. It is
2187analogous to the Perl code C<eval "require '$file'">. It's even
2188implemented that way; consider using Perl_load_module instead.
954c1994 2189
7d3fb230 2190=cut */
954c1994 2191
4633a7c4 2192void
864dbfa3 2193Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2194{
d3acc0f7
JP		 2195 SV* sv;
2196 dSP;
e788e7d3 2197 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2198 PUTBACK;
2199 sv = sv_newmortal();
4633a7c4
LW		 2200 sv_setpv(sv, "require '");
2201 sv_catpv(sv, pv);
2202 sv_catpv(sv, "'");
864dbfa3 2203 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2204 SPAGAIN;
2205 POPSTACK;
79072805
LW		 2206}
2207
79072805 2208void
864dbfa3 2209Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2210{
2211 register GV *gv;
2212
155aba94 2213 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2214 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2215}
2216
76e3520e 2217STATIC void
cea2e8a9 2218S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2219{
ab821d7f 2220 /* This message really ought to be max 23 lines.
75c72d73 2221 * Removed -h because the user already knows that option. Others? */
fb73857a 2222
76e3520e 2223 static char *usage_msg[] = {
fb73857a 2224"-0[octal] specify record separator (\\0, if no argument)",
2225"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2226"-C enable native wide character system interfaces",
1950ee41 2227"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2228"-d[:debugger] run program under debugger",
2229"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2230"-e 'command' one line of program (several -e's allowed, omit programfile)",
2231"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2232"-i[extension] edit <> files in place (makes backup if extension supplied)",
2233"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2234"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2235"-[mM][-]module execute `use/no module...' before executing program",
2236"-n assume 'while (<>) { ... }' loop around program",
2237"-p assume loop like -n but print line also, like sed",
2238"-P run program through C preprocessor before compilation",
2239"-s enable rudimentary parsing for switches after programfile",
2240"-S look for programfile using PATH environment variable",
2241"-T enable tainting checks",
9cbc33e8 2242"-t enable tainting warnings",
aac3bd0d 2243"-u dump core after parsing program",
fb73857a 2244"-U allow unsafe operations",
aac3bd0d
GS		 2245"-v print version, subversion (includes VERY IMPORTANT perl info)",
2246"-V[:variable] print configuration summary (or a single Config.pm variable)",
2247"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2248"-W enable all warnings",
2249"-X disable all warnings",
fb73857a 2250"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2251"\n",
2252NULL
2253};
76e3520e 2254 char **p = usage_msg;
fb73857a 2255
b0e47665
GS		 2256 PerlIO_printf(PerlIO_stdout(),
2257 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2258 name);
fb73857a 2259 while (*p)
b0e47665 2260 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2261}
2262
79072805
LW		 2263/* This routine handles any switches that can be given during run */
2264
2265char *
864dbfa3 2266Perl_moreswitches(pTHX_ char *s)
79072805 2267{
ba210ebe 2268 STRLEN numlen;
c07a80fd 2269 U32 rschar;
79072805
LW		 2270
2271 switch (*s) {
2272 case '0':
a863c7d1 2273 {
53305cf1
NC		 2274 I32 flags = 0;
2275 numlen = 4;
2276 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2277 SvREFCNT_dec(PL_rs);
c07a80fd 2278 if (rschar & ~((U8)~0))
8bfdd7d9 2279 PL_rs = &PL_sv_undef;
c07a80fd 2280 else if (!rschar && numlen >= 2)
8bfdd7d9 2281 PL_rs = newSVpvn("", 0);
c07a80fd 2282 else {
eb160463 2283 char ch = (char)rschar;
8bfdd7d9 2284 PL_rs = newSVpvn(&ch, 1);
79072805
LW		 2285 }
2286 return s + numlen;
a863c7d1 2287 }
46487f74
GS		 2288 case 'C':
2289 PL_widesyscalls = TRUE;
2290 s++;
2291 return s;
2304df62 2292 case 'F':
3280af22 2293 PL_minus_F = TRUE;
ebce5377
RGS		 2294 PL_splitstr = ++s;
2295 while (*s && !isSPACE(*s)) ++s;
2296 *s = '\0';
2297 PL_splitstr = savepv(PL_splitstr);
2304df62 2298 return s;
79072805 2299 case 'a':
3280af22 2300 PL_minus_a = TRUE;
79072805
LW		 2301 s++;
2302 return s;
2303 case 'c':
3280af22 2304 PL_minus_c = TRUE;
79072805
LW		 2305 s++;
2306 return s;
2307 case 'd':
bbce6d69 2308 forbid_setid("-d");
4633a7c4 2309 s++;
70c94a19
RR		 2310 /* The following permits -d:Mod to accepts arguments following an =
2311 in the fashion that -MSome::Mod does. */
2312 if (*s == ':' || *s == '=') {
2313 char *start;
2314 SV *sv;
2315 sv = newSVpv("use Devel::", 0);
2316 start = ++s;
2317 /* We now allow -d:Module=Foo,Bar */
2318 while(isALNUM(*s) || *s==':') ++s;
2319 if (*s != '=')
2320 sv_catpv(sv, start);
2321 else {
2322 sv_catpvn(sv, start, s-start);
2323 sv_catpv(sv, " split(/,/,q{");
2324 sv_catpv(sv, ++s);
2325 sv_catpv(sv, "})");
2326 }
4633a7c4 2327 s += strlen(s);
70c94a19 2328 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2329 }
ed094faf 2330 if (!PL_perldb) {
3280af22 2331 PL_perldb = PERLDB_ALL;
a0d0e21e 2332 init_debugger();
ed094faf 2333 }
79072805
LW		 2334 return s;
2335 case 'D':
0453d815 2336 {
79072805 2337#ifdef DEBUGGING
bbce6d69 2338 forbid_setid("-D");
79072805 2339 if (isALPHA(s[1])) {
04932ac8 2340 /* if adding extra options, remember to update DEBUG_MASK */
1045810a 2341 static char debopts[] = "psltocPmfrxuLHXDSTRJ";
79072805
LW		 2342 char *d;
2343
93a17b20 2344 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2345 PL_debug |= 1 << (d - debopts);
79072805
LW		 2346 }
2347 else {
3280af22 2348 PL_debug = atoi(s+1);
79072805
LW		 2349 for (s++; isDIGIT(*s); s++) ;
2350 }
2ac72d6e 2351#ifdef EBCDIC
12a43e32
JH		 2352 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2353 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2354 "-Dp not implemented on this platform\n");
2355#endif
aea4f609 2356 PL_debug |= DEBUG_TOP_FLAG;
12a43e32 2357#else /* !DEBUGGING */
0453d815 2358 if (ckWARN_d(WARN_DEBUGGING))
9014280d 2359 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
0453d815 2360 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2361 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2362#endif
2363 /*SUPPRESS 530*/
2364 return s;
0453d815 2365 }
4633a7c4 2366 case 'h':
ac27b0f5 2367 usage(PL_origargv[0]);
7ca617d0 2368 my_exit(0);
79072805 2369 case 'i':
3280af22
NIS		 2370 if (PL_inplace)
2371 Safefree(PL_inplace);
c030f24b
GH		 2372#if defined(__CYGWIN__) /* do backup extension automagically */
2373 if (*(s+1) == '\0') {
2374 PL_inplace = savepv(".bak");
2375 return s+1;
2376 }
2377#endif /* __CYGWIN__ */
3280af22 2378 PL_inplace = savepv(s+1);
79072805 2379 /*SUPPRESS 530*/
3280af22 2380 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2381 if (*s) {
fb73857a 2382 *s++ = '\0';
7b8d334a
GS		 2383 if (*s == '-') /* Additional switches on #! line. */
2384 s++;
2385 }
fb73857a 2386 return s;
4e49a025 2387 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2388 forbid_setid("-I");
fb73857a 2389 ++s;
2390 while (*s && isSPACE(*s))
2391 ++s;
2392 if (*s) {
774d564b 2393 char *e, *p;
0df16ed7
GS		 2394 p = s;
2395 /* ignore trailing spaces (possibly followed by other switches) */
2396 do {
2397 for (e = p; *e && !isSPACE(*e); e++) ;
2398 p = e;
2399 while (isSPACE(*p))
2400 p++;
2401 } while (*p && *p != '-');
2402 e = savepvn(s, e-s);
9c8a64f0 2403 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2404 Safefree(e);
2405 s = p;
2406 if (*s == '-')
2407 s++;
79072805
LW		 2408 }
2409 else
a67e862a 2410 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2411 return s;
79072805 2412 case 'l':
3280af22 2413 PL_minus_l = TRUE;
79072805 2414 s++;
7889fe52
NIS		 2415 if (PL_ors_sv) {
2416 SvREFCNT_dec(PL_ors_sv);
2417 PL_ors_sv = Nullsv;
2418 }
79072805 2419 if (isDIGIT(*s)) {
53305cf1 2420 I32 flags = 0;
7889fe52 2421 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2422 numlen = 3 + (*s == '0');
2423 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2424 s += numlen;
2425 }
2426 else {
8bfdd7d9 2427 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2428 PL_ors_sv = newSVpvn("\n\n",2);
2429 }
2430 else {
8bfdd7d9 2431 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2432 }
79072805
LW		 2433 }
2434 return s;
1a30305b 2435 case 'M':
bbce6d69 2436 forbid_setid("-M"); /* XXX ? */
1a30305b 2437 /* FALL THROUGH */
2438 case 'm':
bbce6d69 2439 forbid_setid("-m"); /* XXX ? */
1a30305b 2440 if (*++s) {
a5f75d66 2441 char *start;
11343788 2442 SV *sv;
a5f75d66
AD		 2443 char *use = "use ";
2444 /* -M-foo == 'no foo' */
2445 if (*s == '-') { use = "no "; ++s; }
11343788 2446 sv = newSVpv(use,0);
a5f75d66 2447 start = s;
1a30305b 2448 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2449 while(isALNUM(*s) || *s==':') ++s;
2450 if (*s != '=') {
11343788 2451 sv_catpv(sv, start);
c07a80fd 2452 if (*(start-1) == 'm') {
2453 if (*s != '\0')
cea2e8a9 2454 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2455 sv_catpv( sv, " ()");
c07a80fd 2456 }
2457 } else {
6df41af2 2458 if (s == start)
be98fb35
GS		 2459 Perl_croak(aTHX_ "Module name required with -%c option",
2460 s[-1]);
11343788
MB		 2461 sv_catpvn(sv, start, s-start);
2462 sv_catpv(sv, " split(/,/,q{");
2463 sv_catpv(sv, ++s);
2464 sv_catpv(sv, "})");
c07a80fd 2465 }
1a30305b 2466 s += strlen(s);
5c831c24 2467 if (!PL_preambleav)
3280af22
NIS		 2468 PL_preambleav = newAV();
2469 av_push(PL_preambleav, sv);
1a30305b 2470 }
2471 else
cea2e8a9 2472 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2473 return s;
79072805 2474 case 'n':
3280af22 2475 PL_minus_n = TRUE;
79072805
LW		 2476 s++;
2477 return s;
2478 case 'p':
3280af22 2479 PL_minus_p = TRUE;
79072805
LW		 2480 s++;
2481 return s;
2482 case 's':
bbce6d69 2483 forbid_setid("-s");
3280af22 2484 PL_doswitches = TRUE;
79072805
LW		 2485 s++;
2486 return s;
6537fe72
MS		 2487 case 't':
2488 if (!PL_tainting)
2489 Perl_croak(aTHX_ "Too late for \"-t\" option");
2490 s++;
2491 return s;
463ee0b2 2492 case 'T':
3280af22 2493 if (!PL_tainting)
cea2e8a9 2494 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2495 s++;
2496 return s;
79072805 2497 case 'u':
bf4acbe4
GS		 2498#ifdef MACOS_TRADITIONAL
2499 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2500#endif
3280af22 2501 PL_do_undump = TRUE;
79072805
LW		 2502 s++;
2503 return s;
2504 case 'U':
3280af22 2505 PL_unsafe = TRUE;
79072805
LW		 2506 s++;
2507 return s;
2508 case 'v':
8e9464f1 2509#if !defined(DGUX)
b0e47665 2510 PerlIO_printf(PerlIO_stdout(),
d2560b70 2511 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2512 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2513#else /* DGUX */
2514/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2515 PerlIO_printf(PerlIO_stdout(),
2516 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2517 PerlIO_printf(PerlIO_stdout(),
2518 Perl_form(aTHX_ " built under %s at %s %s\n",
2519 OSNAME, __DATE__, __TIME__));
2520 PerlIO_printf(PerlIO_stdout(),
2521 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2522 OSVERS));
8e9464f1
JH		 2523#endif /* !DGUX */
2524
fb73857a 2525#if defined(LOCAL_PATCH_COUNT)
2526 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2527 PerlIO_printf(PerlIO_stdout(),
2528 "\n(with %d registered patch%s, "
2529 "see perl -V for more detail)",
2530 (int)LOCAL_PATCH_COUNT,
2531 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2532#endif
1a30305b 2533
b0e47665 2534 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2535 "\n\nCopyright 1987-2002, Larry Wall\n");
eae9c151
JH		 2536#ifdef MACOS_TRADITIONAL
2537 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2538 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 2539 "maintained by Chris Nandor\n");
eae9c151 2540#endif
79072805 2541#ifdef MSDOS
b0e47665
GS		 2542 PerlIO_printf(PerlIO_stdout(),
2543 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2544#endif
2545#ifdef DJGPP
b0e47665
GS		 2546 PerlIO_printf(PerlIO_stdout(),
2547 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2548 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2549#endif
79072805 2550#ifdef OS2
b0e47665
GS		 2551 PerlIO_printf(PerlIO_stdout(),
2552 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 2553 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2554#endif
79072805 2555#ifdef atarist
b0e47665
GS		 2556 PerlIO_printf(PerlIO_stdout(),
2557 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2558#endif
a3f9223b 2559#ifdef __BEOS__
b0e47665
GS		 2560 PerlIO_printf(PerlIO_stdout(),
2561 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2562#endif
1d84e8df 2563#ifdef MPE
b0e47665 2564 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2565 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
1d84e8df 2566#endif
9d116dd7 2567#ifdef OEMVS
b0e47665
GS		 2568 PerlIO_printf(PerlIO_stdout(),
2569 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2570#endif
495c5fdc 2571#ifdef __VOS__
b0e47665 2572 PerlIO_printf(PerlIO_stdout(),
94efb9fb 2573 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 2574#endif
092bebab 2575#ifdef __OPEN_VM
b0e47665
GS		 2576 PerlIO_printf(PerlIO_stdout(),
2577 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2578#endif
a1a0e61e 2579#ifdef POSIX_BC
b0e47665
GS		 2580 PerlIO_printf(PerlIO_stdout(),
2581 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2582#endif
61ae2fbf 2583#ifdef __MINT__
b0e47665
GS		 2584 PerlIO_printf(PerlIO_stdout(),
2585 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2586#endif
f83d2536 2587#ifdef EPOC
b0e47665 2588 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2589 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 2590#endif
e1caacb4 2591#ifdef UNDER_CE
be3c0a43 2592 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
e1caacb4
JH		 2593 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2594 wce_hitreturn();
2595#endif
baed7233
DL		 2596#ifdef BINARY_BUILD_NOTICE
2597 BINARY_BUILD_NOTICE;
2598#endif
b0e47665
GS		 2599 PerlIO_printf(PerlIO_stdout(),
2600 "\n\
79072805 2601Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2602GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2603Complete documentation for Perl, including FAQ lists, should be found on\n\
2604this system using `man perl' or `perldoc perl'. If you have access to the\n\
2605Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
7ca617d0 2606 my_exit(0);
79072805 2607 case 'w':
599cee73 2608 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2609 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2610 s++;
2611 return s;
2612 case 'W':
ac27b0f5 2613 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS		 2614 if (!specialWARN(PL_compiling.cop_warnings))
2615 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2616 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2617 s++;
2618 return s;
2619 case 'X':
ac27b0f5 2620 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS		 2621 if (!specialWARN(PL_compiling.cop_warnings))
2622 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2623 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2624 s++;
2625 return s;
a0d0e21e 2626 case '*':
79072805
LW		 2627 case ' ':
2628 if (s[1] == '-') /* Additional switches on #! line. */
2629 return s+2;
2630 break;
a0d0e21e 2631 case '-':
79072805 2632 case 0:
51882d45 2633#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2634 case '\r':
2635#endif
79072805
LW		 2636 case '\n':
2637 case '\t':
2638 break;
aa689395 2639#ifdef ALTERNATE_SHEBANG
2640 case 'S': /* OS/2 needs -S on "extproc" line. */
2641 break;
2642#endif
a0d0e21e 2643 case 'P':
3280af22 2644 if (PL_preprocess)
a0d0e21e
LW		 2645 return s+1;
2646 /* FALL THROUGH */
79072805 2647 default:
cea2e8a9 2648 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2649 }
2650 return Nullch;
2651}
2652
2653/* compliments of Tom Christiansen */
2654
2655/* unexec() can be found in the Gnu emacs distribution */
ee580363 2656/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2657
2658void
864dbfa3 2659Perl_my_unexec(pTHX)
79072805
LW		 2660{
2661#ifdef UNEXEC
46fc3d4c 2662 SV* prog;
2663 SV* file;
ee580363 2664 int status = 1;
79072805
LW		 2665 extern int etext;
2666
ee580363 2667 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2668 sv_catpv(prog, "/perl");
6b88bc9c 2669 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2670 sv_catpv(file, ".perldump");
79072805 2671
ee580363
GS		 2672 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2673 /* unexec prints msg to stderr in case of failure */
6ad3d225 2674 PerlProc_exit(status);
79072805 2675#else
a5f75d66
AD		 2676# ifdef VMS
2677# include <lib$routines.h>
2678 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2679# else
79072805 2680 ABORT(); /* for use with undump */
aa689395 2681# endif
a5f75d66 2682#endif
79072805
LW		 2683}
2684
cb68f92d
GS		 2685/* initialize curinterp */
2686STATIC void
cea2e8a9 2687S_init_interp(pTHX)
cb68f92d
GS		 2688{
2689
acfe0abc
GS		 2690#ifdef MULTIPLICITY
2691# define PERLVAR(var,type)
2692# define PERLVARA(var,n,type)
2693# if defined(PERL_IMPLICIT_CONTEXT)
2694# if defined(USE_5005THREADS)
2695# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2696# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2697# else /* !USE_5005THREADS */
2698# define PERLVARI(var,type,init) aTHX->var = init;
2699# define PERLVARIC(var,type,init) aTHX->var = init;
2700# endif /* USE_5005THREADS */
3967c732 2701# else
acfe0abc
GS		 2702# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2703# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2704# endif
acfe0abc
GS		 2705# include "intrpvar.h"
2706# ifndef USE_5005THREADS
2707# include "thrdvar.h"
2708# endif
2709# undef PERLVAR
2710# undef PERLVARA
2711# undef PERLVARI
2712# undef PERLVARIC
2713#else
2714# define PERLVAR(var,type)
2715# define PERLVARA(var,n,type)
2716# define PERLVARI(var,type,init) PL_##var = init;
2717# define PERLVARIC(var,type,init) PL_##var = init;
2718# include "intrpvar.h"
2719# ifndef USE_5005THREADS
2720# include "thrdvar.h"
2721# endif
2722# undef PERLVAR
2723# undef PERLVARA
2724# undef PERLVARI
2725# undef PERLVARIC
cb68f92d
GS		 2726#endif
2727
cb68f92d
GS		 2728}
2729
76e3520e 2730STATIC void
cea2e8a9 2731S_init_main_stash(pTHX)
79072805 2732{
463ee0b2 2733 GV *gv;
6e72f9df 2734
3280af22 2735 PL_curstash = PL_defstash = newHV();
79cb57f6 2736 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2737 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2738 SvREFCNT_dec(GvHV(gv));
3280af22 2739 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2740 SvREADONLY_on(gv);
3280af22
NIS		 2741 HvNAME(PL_defstash) = savepv("main");
2742 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2743 GvMULTI_on(PL_incgv);
2744 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2745 GvMULTI_on(PL_hintgv);
2746 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2747 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2748 GvMULTI_on(PL_errgv);
2749 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2750 GvMULTI_on(PL_replgv);
cea2e8a9 2751 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2752 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2753 sv_setpvn(ERRSV, "", 0);
3280af22 2754 PL_curstash = PL_defstash;
11faa288 2755 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2756 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2757 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2758 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2759 /* We must init $/ before switches are processed. */
864dbfa3 2760 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2761}
2762
76e3520e 2763STATIC void
cea2e8a9 2764S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2765{
1b24ed4b
MS		 2766 char *quote;
2767 char *code;
2768 char *cpp_discard_flag;
2769 char *perl;
2770
6c4ab083 2771 *fdscript = -1;
79072805 2772
3280af22
NIS		 2773 if (PL_e_script) {
2774 PL_origfilename = savepv("-e");
96436eeb 2775 }
6c4ab083
GS		 2776 else {
2777 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2778 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2779
2780 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2781 char *s = scriptname + 8;
2782 *fdscript = atoi(s);
2783 while (isDIGIT(*s))
2784 s++;
2785 if (*s) {
2786 scriptname = savepv(s + 1);
3280af22
NIS		 2787 Safefree(PL_origfilename);
2788 PL_origfilename = scriptname;
6c4ab083
GS		 2789 }
2790 }
2791 }
2792
05ec9bb3 2793 CopFILE_free(PL_curcop);
57843af0 2794 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2795 if (strEQ(PL_origfilename,"-"))
79072805 2796 scriptname = "";
01f988be 2797 if (*fdscript >= 0) {
3280af22 2798 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2799# if defined(HAS_FCNTL) && defined(F_SETFD)
2800 if (PL_rsfp)
2801 /* ensure close-on-exec */
2802 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2803# endif
96436eeb 2804 }
3280af22 2805 else if (PL_preprocess) {
46fc3d4c 2806 char *cpp_cfg = CPPSTDIN;
79cb57f6 2807 SV *cpp = newSVpvn("",0);
46fc3d4c 2808 SV *cmd = NEWSV(0,0);
2809
2810 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2811 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2812 sv_catpv(cpp, cpp_cfg);
79072805 2813
1b24ed4b
MS		 2814# ifndef VMS
2815 sv_catpvn(sv, "-I", 2);
2816 sv_catpv(sv,PRIVLIB_EXP);
2817# endif
46fc3d4c 2818
14953ddc
MB		 2819 DEBUG_P(PerlIO_printf(Perl_debug_log,
2820 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2821 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS		 2822
2823# if defined(MSDOS) || defined(WIN32) || defined(VMS)
2824 quote = "\"";
2825# else
2826 quote = "'";
2827# endif
2828
2829# ifdef VMS
2830 cpp_discard_flag = "";
2831# else
2832 cpp_discard_flag = "-C";
2833# endif
2834
2835# ifdef OS2
2836 perl = os2_execname(aTHX);
2837# else
2838 perl = PL_origargv[0];
2839# endif
2840
2841
2842 /* This strips off Perl comments which might interfere with
62375a60
NIS		 2843 the C pre-processor, including #!. #line directives are
2844 deliberately stripped to avoid confusion with Perl's version
1b24ed4b
MS		 2845 of #line. FWP played some golf with it so it will fit
2846 into VMS's 255 character buffer.
2847 */
2848 if( PL_doextract )
2849 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2850 else
2851 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2852
2853 Perl_sv_setpvf(aTHX_ cmd, "\
2854%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
62375a60 2855 perl, quote, code, quote, scriptname, cpp,
1b24ed4b
MS		 2856 cpp_discard_flag, sv, CPPMINUS);
2857
3280af22 2858 PL_doextract = FALSE;
1b24ed4b
MS		 2859# ifdef IAMSUID /* actually, this is caught earlier */
2860 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2861# ifdef HAS_SETEUID
2862 (void)seteuid(PL_uid); /* musn't stay setuid root */
2863# else
2864# ifdef HAS_SETREUID
2865 (void)setreuid((Uid_t)-1, PL_uid);
2866# else
2867# ifdef HAS_SETRESUID
2868 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2869# else
2870 PerlProc_setuid(PL_uid);
2871# endif
2872# endif
2873# endif
b28d0864 2874 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2875 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805 2876 }
1b24ed4b 2877# endif /* IAMSUID */
0a6c758d 2878
62375a60
NIS		 2879 DEBUG_P(PerlIO_printf(Perl_debug_log,
2880 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS		 2881 SvPVX(cmd)));
2882
3280af22 2883 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2884 SvREFCNT_dec(cmd);
2885 SvREFCNT_dec(cpp);
79072805
LW		 2886 }
2887 else if (!*scriptname) {
bbce6d69 2888 forbid_setid("program input from stdin");
3280af22 2889 PL_rsfp = PerlIO_stdin();
79072805 2890 }
96436eeb 2891 else {
3280af22 2892 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2893# if defined(HAS_FCNTL) && defined(F_SETFD)
2894 if (PL_rsfp)
2895 /* ensure close-on-exec */
2896 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2897# endif
96436eeb 2898 }
3280af22 2899 if (!PL_rsfp) {
1b24ed4b
MS		 2900# ifdef DOSUID
2901# ifndef IAMSUID /* in case script is not readable before setuid */
2902 if (PL_euid &&
2903 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2904 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2905 {
2906 /* try again */
62375a60
NIS		 2907 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2908 BIN_EXP, (int)PERL_REVISION,
1b24ed4b
MS		 2909 (int)PERL_VERSION,
2910 (int)PERL_SUBVERSION), PL_origargv);
2911 Perl_croak(aTHX_ "Can't do setuid\n");
2912 }
2913# endif
2914# endif
2915# ifdef IAMSUID
2916 errno = EPERM;
2917 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2918 Strerror(errno));
2919# else
2920 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2921 CopFILE(PL_curcop), Strerror(errno));
2922# endif
13281fa4 2923 }
79072805 2924}
8d063cd8 2925
7b89560d
JH		 2926/* Mention
2927 * I_SYSSTATVFS HAS_FSTATVFS
2928 * I_SYSMOUNT
c890dc6c 2929 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2930 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2931 * here so that metaconfig picks them up. */
2932
104d25b7 2933#ifdef IAMSUID
864dbfa3 2934STATIC int
e688b231 2935S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2936{
0545a864
JH		 2937 int check_okay = 0; /* able to do all the required sys/libcalls */
2938 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2939/*
ad27e871 2940 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2941 * fstatvfs() is UNIX98.
0545a864 2942 * fstatfs() is 4.3 BSD.
ad27e871 2943 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2944 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2945 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2946 */
2947
6439433f
JH		 2948#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2949
2950# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2951 defined(HAS_FSTATVFS)
2952# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2953 struct statvfs stfs;
6439433f 2954
104d25b7
JH		 2955 check_okay = fstatvfs(fd, &stfs) == 0;
2956 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2957# endif /* fstatvfs */
ac27b0f5 2958
6439433f
JH		 2959# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2960 defined(PERL_MOUNT_NOSUID) && \
2961 defined(HAS_FSTATFS) && \
2962 defined(HAS_STRUCT_STATFS) && \
2963 defined(HAS_STRUCT_STATFS_F_FLAGS)
2964# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2965 struct statfs stfs;
6439433f 2966
104d25b7 2967 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2968 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2969# endif /* fstatfs */
2970
2971# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2972 defined(PERL_MOUNT_NOSUID) && \
2973 defined(HAS_FSTAT) && \
2974 defined(HAS_USTAT) && \
2975 defined(HAS_GETMNT) && \
2976 defined(HAS_STRUCT_FS_DATA) && \
2977 defined(NOSTAT_ONE)
2978# define FD_ON_NOSUID_CHECK_OKAY
c623ac67 2979 Stat_t fdst;
6439433f 2980
0545a864 2981 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2982 struct ustat us;
2983 if (ustat(fdst.st_dev, &us) == 0) {
2984 struct fs_data fsd;
2985 /* NOSTAT_ONE here because we're not examining fields which
2986 * vary between that case and STAT_ONE. */
ad27e871 2987 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2988 size_t cmplen = sizeof(us.f_fname);
2989 if (sizeof(fsd.fd_req.path) < cmplen)
2990 cmplen = sizeof(fsd.fd_req.path);
2991 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2992 fdst.st_dev == fsd.fd_req.dev) {
2993 check_okay = 1;
2994 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2995 }
2996 }
2997 }
2998 }
0545a864 2999 }
6439433f
JH		 3000# endif /* fstat+ustat+getmnt */
3001
3002# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3003 defined(HAS_GETMNTENT) && \
3004 defined(HAS_HASMNTOPT) && \
3005 defined(MNTOPT_NOSUID)
3006# define FD_ON_NOSUID_CHECK_OKAY
3007 FILE *mtab = fopen("/etc/mtab", "r");
3008 struct mntent *entry;
c623ac67 3009 Stat_t stb, fsb;
104d25b7
JH		 3010
3011 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 3012 while (entry = getmntent(mtab)) {
3013 if (stat(entry->mnt_dir, &fsb) == 0
3014 && fsb.st_dev == stb.st_dev)
3015 {
3016 /* found the filesystem */
3017 check_okay = 1;
3018 if (hasmntopt(entry, MNTOPT_NOSUID))
3019 on_nosuid = 1;
3020 break;
3021 } /* A single fs may well fail its stat(). */
3022 }
104d25b7
JH		 3023 }
3024 if (mtab)
6439433f
JH		 3025 fclose(mtab);
3026# endif /* getmntent+hasmntopt */
0545a864 3027
ac27b0f5 3028 if (!check_okay)
0545a864 3029 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 3030 return on_nosuid;
3031}
3032#endif /* IAMSUID */
3033
76e3520e 3034STATIC void
cea2e8a9 3035S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 3036{
155aba94 3037#ifdef IAMSUID
96436eeb 3038 int which;
155aba94 3039#endif
96436eeb 3040
13281fa4
LW		 3041 /* do we need to emulate setuid on scripts? */
3042
3043 /* This code is for those BSD systems that have setuid #! scripts disabled
3044 * in the kernel because of a security problem. Merely defining DOSUID
3045 * in perl will not fix that problem, but if you have disabled setuid
3046 * scripts in the kernel, this will attempt to emulate setuid and setgid
3047 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 3048 * root version must be called suidperl or sperlN.NNN. If regular perl
3049 * discovers that it has opened a setuid script, it calls suidperl with
3050 * the same argv that it had. If suidperl finds that the script it has
3051 * just opened is NOT setuid root, it sets the effective uid back to the
3052 * uid. We don't just make perl setuid root because that loses the
3053 * effective uid we had before invoking perl, if it was different from the
3054 * uid.
13281fa4
LW		 3055 *
3056 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3057 * be defined in suidperl only. suidperl must be setuid root. The
3058 * Configure script will set this up for you if you want it.
3059 */
a687059c 3060
13281fa4 3061#ifdef DOSUID
6e72f9df 3062 char *s, *s2;
a0d0e21e 3063
b28d0864 3064 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 3065 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 3066 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 3067 I32 len;
2d8e6c8d 3068 STRLEN n_a;
13281fa4 3069
a687059c 3070#ifdef IAMSUID
fe14fcc3 3071#ifndef HAS_SETREUID
a687059c
LW		 3072 /* On this access check to make sure the directories are readable,
3073 * there is actually a small window that the user could use to make
3074 * filename point to an accessible directory. So there is a faint
3075 * chance that someone could execute a setuid script down in a
3076 * non-accessible directory. I don't know what to do about that.
3077 * But I don't think it's too important. The manual lies when
3078 * it says access() is useful in setuid programs.
3079 */
cc49e20b 3080 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 3081 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 3082#else
3083 /* If we can swap euid and uid, then we can determine access rights
3084 * with a simple stat of the file, and then compare device and
3085 * inode to make sure we did stat() on the same file we opened.
3086 * Then we just have to make sure he or she can execute it.
3087 */
3088 {
c623ac67 3089 Stat_t tmpstatbuf;
a687059c 3090
85e6fe83
LW		 3091 if (
3092#ifdef HAS_SETREUID
b28d0864 3093 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 3094#else
3095# if HAS_SETRESUID
b28d0864 3096 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3097# endif
85e6fe83 3098#endif
b28d0864 3099 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3100 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3101 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3102 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3103#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3104 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3105 Perl_croak(aTHX_ "Permission denied");
104d25b7 3106#endif
b28d0864
NIS		 3107 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3108 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3109 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3110 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3111 }
85e6fe83
LW		 3112 if (
3113#ifdef HAS_SETREUID
b28d0864 3114 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 3115#else
3116# if defined(HAS_SETRESUID)
b28d0864 3117 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3118# endif
85e6fe83 3119#endif
b28d0864 3120 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3121 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3122 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3123 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3124 }
fe14fcc3 3125#endif /* HAS_SETREUID */
a687059c
LW		 3126#endif /* IAMSUID */
3127
b28d0864 3128 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3129 Perl_croak(aTHX_ "Permission denied");
b28d0864 3130 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3131 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3132 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3133 CopLINE_inc(PL_curcop);
6b88bc9c 3134 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3135 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3136 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3137 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3138 if (*s == ' ') s++;
45d8adaa 3139 while (!isSPACE(*s)) s++;
2d8e6c8d 3140 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3141 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3142 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3143 Perl_croak(aTHX_ "Not a perl script");
a687059c 3144 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3145 /*
3146 * #! arg must be what we saw above. They can invoke it by
3147 * mentioning suidperl explicitly, but they may not add any strange
3148 * arguments beyond what #! says if they do invoke suidperl that way.
3149 */
3150 len = strlen(validarg);
3151 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3152 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3153 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3154
3155#ifndef IAMSUID
b28d0864
NIS		 3156 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3157 PL_euid == PL_statbuf.st_uid)
3158 if (!PL_do_undump)
cea2e8a9 3159 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3160FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3161#endif /* IAMSUID */
13281fa4 3162
b28d0864
NIS		 3163 if (PL_euid) { /* oops, we're not the setuid root perl */
3164 (void)PerlIO_close(PL_rsfp);
13281fa4 3165#ifndef IAMSUID
46fc3d4c 3166 /* try again */
a7cb1f99 3167 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3168 (int)PERL_REVISION, (int)PERL_VERSION,
3169 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3170#endif
cea2e8a9 3171 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3172 }
3173
b28d0864 3174 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3175#ifdef HAS_SETEGID
b28d0864 3176 (void)setegid(PL_statbuf.st_gid);
a687059c 3177#else
fe14fcc3 3178#ifdef HAS_SETREGID
b28d0864 3179 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3180#else
3181#ifdef HAS_SETRESGID
b28d0864 3182 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3183#else
b28d0864 3184 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3185#endif
3186#endif
85e6fe83 3187#endif
b28d0864 3188 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3189 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3190 }
b28d0864
NIS		 3191 if (PL_statbuf.st_mode & S_ISUID) {
3192 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3193#ifdef HAS_SETEUID
b28d0864 3194 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3195#else
fe14fcc3 3196#ifdef HAS_SETREUID
b28d0864 3197 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3198#else
3199#ifdef HAS_SETRESUID
b28d0864 3200 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3201#else
b28d0864 3202 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3203#endif
3204#endif
85e6fe83 3205#endif
b28d0864 3206 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3207 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3208 }
b28d0864 3209 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3210#ifdef HAS_SETEUID
b28d0864 3211 (void)seteuid((Uid_t)PL_uid);
a687059c 3212#else
fe14fcc3 3213#ifdef HAS_SETREUID
b28d0864 3214 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3215#else
85e6fe83 3216#ifdef HAS_SETRESUID
b28d0864 3217 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3218#else
b28d0864 3219 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3220#endif
a687059c
LW		 3221#endif
3222#endif
b28d0864 3223 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3224 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3225 }
748a9306 3226 init_ids();
b28d0864 3227 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3228 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3229 }
3230#ifdef IAMSUID
6b88bc9c 3231 else if (PL_preprocess)
cea2e8a9 3232 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3233 else if (fdscript >= 0)
cea2e8a9 3234 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3235 else
cea2e8a9 3236 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3237
3238 /* We absolutely must clear out any saved ids here, so we */
3239 /* exec the real perl, substituting fd script for scriptname. */
3240 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3241 PerlIO_rewind(PL_rsfp);
3242 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3243 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3244 if (!PL_origargv[which])
cea2e8a9
GS		 3245 Perl_croak(aTHX_ "Permission denied");
3246 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3247 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3248#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3249 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3250#endif
a7cb1f99 3251 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3252 (int)PERL_REVISION, (int)PERL_VERSION,
3253 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3254 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3255#endif /* IAMSUID */
a687059c 3256#else /* !DOSUID */
3280af22 3257 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3258#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3259 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3260 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3261 ||
b28d0864 3262 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3263 )
b28d0864 3264 if (!PL_do_undump)
cea2e8a9 3265 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3266FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3267#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3268 /* not set-id, must be wrapped */
a687059c 3269 }
13281fa4 3270#endif /* DOSUID */
79072805 3271}
13281fa4 3272
76e3520e 3273STATIC void
cea2e8a9 3274S_find_beginning(pTHX)
79072805 3275{
6e72f9df 3276 register char *s, *s2;
33b78306
LW		 3277
3278 /* skip forward in input to the real script? */
3279
bbce6d69 3280 forbid_setid("-x");
bf4acbe4 3281#ifdef MACOS_TRADITIONAL
084592ab 3282 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3283
bf4acbe4
GS		 3284 while (PL_doextract || gMacPerl_AlwaysExtract) {
3285 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3286 if (!gMacPerl_AlwaysExtract)
3287 Perl_croak(aTHX_ "No Perl script found in input\n");
3288
3289 if (PL_doextract) /* require explicit override ? */
3290 if (!OverrideExtract(PL_origfilename))
3291 Perl_croak(aTHX_ "User aborted script\n");
3292 else
3293 PL_doextract = FALSE;
3294
3295 /* Pater peccavi, file does not have #! */
3296 PerlIO_rewind(PL_rsfp);
ac27b0f5 3297
bf4acbe4
GS		 3298 break;
3299 }
3300#else
3280af22
NIS		 3301 while (PL_doextract) {
3302 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3303 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3304#endif
4f0c37ba
IZ		 3305 s2 = s;
3306 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3307 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3308 PL_doextract = FALSE;
6e72f9df 3309 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3310 s2 = s;
3311 while (*s == ' ' || *s == '\t') s++;
3312 if (*s++ == '-') {
3313 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3314 if (strnEQ(s2-4,"perl",4))
3315 /*SUPPRESS 530*/
155aba94
GS		 3316 while ((s = moreswitches(s)))
3317 ;
33b78306 3318 }
95e8664e
CN		 3319#ifdef MACOS_TRADITIONAL
3320 break;
3321#endif
83025b21
LW		 3322 }
3323 }
3324}
3325
afe37c7d 3326
76e3520e 3327STATIC void
cea2e8a9 3328S_init_ids(pTHX)
352d5a3a 3329{
d8eceb89
JH		 3330 PL_uid = PerlProc_getuid();
3331 PL_euid = PerlProc_geteuid();
3332 PL_gid = PerlProc_getgid();
3333 PL_egid = PerlProc_getegid();
748a9306 3334#ifdef VMS
b28d0864
NIS		 3335 PL_uid |= PL_gid << 16;
3336 PL_euid |= PL_egid << 16;
748a9306 3337#endif
3280af22 3338 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3339}
79072805 3340
76e3520e 3341STATIC void
cea2e8a9 3342S_forbid_setid(pTHX_ char *s)
bbce6d69 3343{
3280af22 3344 if (PL_euid != PL_uid)
cea2e8a9 3345 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3346 if (PL_egid != PL_gid)
cea2e8a9 3347 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3348}
3349
1ee4443e
IZ		 3350void
3351Perl_init_debugger(pTHX)
748a9306 3352{
1ee4443e
IZ		 3353 HV *ostash = PL_curstash;
3354
3280af22
NIS		 3355 PL_curstash = PL_debstash;
3356 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3357 AvREAL_off(PL_dbargs);
3358 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3359 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3360 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3361 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3362 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3363 sv_setiv(PL_DBsingle, 0);
3280af22 3364 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3365 sv_setiv(PL_DBtrace, 0);
3280af22 3366 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3367 sv_setiv(PL_DBsignal, 0);
1ee4443e 3368 PL_curstash = ostash;
352d5a3a
LW		 3369}
3370
2ce36478
SM		 3371#ifndef STRESS_REALLOC
3372#define REASONABLE(size) (size)
3373#else
3374#define REASONABLE(size) (1) /* unreasonable */
3375#endif
3376
11343788 3377void
cea2e8a9 3378Perl_init_stacks(pTHX)
79072805 3379{
e336de0d 3380 /* start with 128-item stack and 8K cxstack */
3280af22 3381 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3382 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3383 PL_curstackinfo->si_type = PERLSI_MAIN;
3384 PL_curstack = PL_curstackinfo->si_stack;
3385 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3386
3280af22
NIS		 3387 PL_stack_base = AvARRAY(PL_curstack);
3388 PL_stack_sp = PL_stack_base;
3389 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3390
3280af22
NIS		 3391 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3392 PL_tmps_floor = -1;
3393 PL_tmps_ix = -1;
3394 PL_tmps_max = REASONABLE(128);
8990e307 3395
3280af22
NIS		 3396 New(54,PL_markstack,REASONABLE(32),I32);
3397 PL_markstack_ptr = PL_markstack;
3398 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3399
ce2f7c3b 3400 SET_MARK_OFFSET;
e336de0d 3401
3280af22
NIS		 3402 New(54,PL_scopestack,REASONABLE(32),I32);
3403 PL_scopestack_ix = 0;
3404 PL_scopestack_max = REASONABLE(32);
79072805 3405
3280af22
NIS		 3406 New(54,PL_savestack,REASONABLE(128),ANY);
3407 PL_savestack_ix = 0;
3408 PL_savestack_max = REASONABLE(128);
79072805 3409
3280af22
NIS		 3410 New(54,PL_retstack,REASONABLE(16),OP*);
3411 PL_retstack_ix = 0;
3412 PL_retstack_max = REASONABLE(16);
378cc40b 3413}
33b78306 3414
2ce36478
SM		 3415#undef REASONABLE
3416
76e3520e 3417STATIC void
cea2e8a9 3418S_nuke_stacks(pTHX)
6e72f9df 3419{
3280af22
NIS		 3420 while (PL_curstackinfo->si_next)
3421 PL_curstackinfo = PL_curstackinfo->si_next;
3422 while (PL_curstackinfo) {
3423 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3424 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3425 Safefree(PL_curstackinfo->si_cxstack);
3426 Safefree(PL_curstackinfo);
3427 PL_curstackinfo = p;
e336de0d 3428 }
3280af22
NIS		 3429 Safefree(PL_tmps_stack);
3430 Safefree(PL_markstack);
3431 Safefree(PL_scopestack);
3432 Safefree(PL_savestack);
3433 Safefree(PL_retstack);
378cc40b 3434}
33b78306 3435
76e3520e 3436STATIC void
cea2e8a9 3437S_init_lexer(pTHX)
8990e307 3438{
06039172 3439 PerlIO *tmpfp;
3280af22
NIS		 3440 tmpfp = PL_rsfp;
3441 PL_rsfp = Nullfp;
3442 lex_start(PL_linestr);
3443 PL_rsfp = tmpfp;
79cb57f6 3444 PL_subname = newSVpvn("main",4);
8990e307
LW		 3445}
3446
76e3520e 3447STATIC void
cea2e8a9 3448S_init_predump_symbols(pTHX)
45d8adaa 3449{
93a17b20 3450 GV *tmpgv;
af8c498a 3451 IO *io;
79072805 3452
864dbfa3 3453 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3454 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3455 GvMULTI_on(PL_stdingv);
af8c498a 3456 io = GvIOp(PL_stdingv);
a04651f4 3457 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3458 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3459 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3460 GvMULTI_on(tmpgv);
af8c498a 3461 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3462
85e6fe83 3463 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3464 GvMULTI_on(tmpgv);
af8c498a 3465 io = GvIOp(tmpgv);
a04651f4 3466 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3467 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3468 setdefout(tmpgv);
adbc6bb1 3469 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3470 GvMULTI_on(tmpgv);
af8c498a 3471 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3472
bf49b057
GS