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Restore non-ithreads build. Interestingly binmode test passes
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
acfe0abc 28static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
4d1ff10f 42#if defined(USE_5005THREADS)
06d86050
GS		 43# define INIT_TLS_AND_INTERP \
44 STMT_START { \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
47 INIT_THREADS; \
48 ALLOC_THREAD_KEY; \
49 } \
50 } STMT_END
51#else
52# if defined(USE_ITHREADS)
53# define INIT_TLS_AND_INTERP \
54 STMT_START { \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
57 INIT_THREADS; \
58 ALLOC_THREAD_KEY; \
534825c4
GS		 59 PERL_SET_THX(my_perl); \
60 OP_REFCNT_INIT; \
61 } \
62 else { \
63 PERL_SET_THX(my_perl); \
06d86050 64 } \
06d86050
GS		 65 } STMT_END
66# else
67# define INIT_TLS_AND_INTERP \
68 STMT_START { \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
71 } \
72 PERL_SET_THX(my_perl); \
73 } STMT_END
74# endif
75#endif
76
32e30700
GS		 77#ifdef PERL_IMPLICIT_SYS
78PerlInterpreter *
7766f137
GS		 79perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
84{
85 PerlInterpreter *my_perl;
32e30700
GS		 86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 88 INIT_TLS_AND_INTERP;
32e30700
GS		 89 Zero(my_perl, 1, PerlInterpreter);
90 PL_Mem = ipM;
7766f137
GS		 91 PL_MemShared = ipMS;
92 PL_MemParse = ipMP;
32e30700
GS		 93 PL_Env = ipE;
94 PL_StdIO = ipStd;
95 PL_LIO = ipLIO;
96 PL_Dir = ipD;
97 PL_Sock = ipS;
98 PL_Proc = ipP;
7766f137 99
32e30700
GS		 100 return my_perl;
101}
102#else
954c1994
GS		 103
104/*
105=for apidoc perl_alloc
106
107Allocates a new Perl interpreter. See L<perlembed>.
108
109=cut
110*/
111
93a17b20 112PerlInterpreter *
cea2e8a9 113perl_alloc(void)
79072805 114{
cea2e8a9 115 PerlInterpreter *my_perl;
79072805 116
54aff467 117 /* New() needs interpreter, so call malloc() instead */
e8ee3774 118 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 119
06d86050 120 INIT_TLS_AND_INTERP;
dedcbb81 121 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 122 return my_perl;
79072805 123}
32e30700 124#endif /* PERL_IMPLICIT_SYS */
79072805 125
954c1994
GS		 126/*
127=for apidoc perl_construct
128
129Initializes a new Perl interpreter. See L<perlembed>.
130
131=cut
132*/
133
79072805 134void
0cb96387 135perl_construct(pTHXx)
79072805 136{
4d1ff10f 137#ifdef USE_5005THREADS
a863c7d1 138#ifndef FAKE_THREADS
e1f15930 139 struct perl_thread *thr = NULL;
a863c7d1 140#endif /* FAKE_THREADS */
4d1ff10f 141#endif /* USE_5005THREADS */
ba869deb 142
8990e307 143#ifdef MULTIPLICITY
54aff467 144 init_interp();
ac27b0f5 145 PL_perl_destruct_level = 1;
54aff467
GS		 146#else
147 if (PL_perl_destruct_level > 0)
148 init_interp();
149#endif
150
33f46ff6 151 /* Init the real globals (and main thread)? */
3280af22 152 if (!PL_linestr) {
4d1ff10f 153#ifdef USE_5005THREADS
533c011a 154 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 155 /*
156 * Safe to use basic SV functions from now on (though
157 * not things like mortals or tainting yet).
158 */
533c011a
NIS		 159 MUTEX_INIT(&PL_eval_mutex);
160 COND_INIT(&PL_eval_cond);
161 MUTEX_INIT(&PL_threads_mutex);
162 COND_INIT(&PL_nthreads_cond);
ba869deb 163# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 164 MUTEX_INIT(&PL_svref_mutex);
ba869deb 165# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 166
5ff3f7a4 167 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 168 MUTEX_INIT(&PL_sv_lock_mutex);
169 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 170
199100c8 171 thr = init_main_thread();
4d1ff10f 172#endif /* USE_5005THREADS */
11343788 173
14dd3ad8 174#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 175 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 176#endif
312caa8e 177
2aea9f8a
GS		 178 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
179
3280af22
NIS		 180 PL_linestr = NEWSV(65,79);
181 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 182
3280af22 183 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 184 /* set read-only and try to insure than we wont see REFCNT==0
185 very often */
186
3280af22
NIS		 187 SvREADONLY_on(&PL_sv_undef);
188 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 189
3280af22
NIS		 190 sv_setpv(&PL_sv_no,PL_No);
191 SvNV(&PL_sv_no);
192 SvREADONLY_on(&PL_sv_no);
193 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 194
3280af22
NIS		 195 sv_setpv(&PL_sv_yes,PL_Yes);
196 SvNV(&PL_sv_yes);
197 SvREADONLY_on(&PL_sv_yes);
198 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 199 }
79072805 200
cea2e8a9 201 PL_sighandlerp = Perl_sighandler;
3280af22 202 PL_pidstatus = newHV();
44a8e56a 203
79072805
LW		 204#ifdef MSDOS
205 /*
206 * There is no way we can refer to them from Perl so close them to save
207 * space. The other alternative would be to provide STDAUX and STDPRN
208 * filehandles.
209 */
2b96b0a5
JH		 210 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
211 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW		 212#endif
213 }
214
8bfdd7d9 215 PL_rs = newSVpvn("\n", 1);
dc92893f 216
cea2e8a9 217 init_stacks();
79072805 218
748a9306 219 init_ids();
3280af22 220 PL_lex_state = LEX_NOTPARSING;
a5f75d66 221
312caa8e 222 JMPENV_BOOTSTRAP;
f86702cc 223 STATUS_ALL_SUCCESS;
224
0672f40e 225 init_i18nl10n(1);
36477c24 226 SET_NUMERIC_STANDARD();
0b5b802d 227
a7cb1f99
GS		 228 {
229 U8 *s;
230 PL_patchlevel = NEWSV(0,4);
155aba94 231 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 232 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 233 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 234 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 235 /* Build version strings using "native" characters */
236 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
237 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
238 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 239 *s = '\0';
240 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
241 SvPOK_on(PL_patchlevel);
242 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
243 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 244#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 245 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 246#endif
a7cb1f99
GS		 247 ;
248 SvNOK_on(PL_patchlevel); /* dual valued */
249 SvUTF8_on(PL_patchlevel);
250 SvREADONLY_on(PL_patchlevel);
251 }
79072805 252
ab821d7f 253#if defined(LOCAL_PATCH_COUNT)
3280af22 254 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 255#endif
256
52853b95
GS		 257#ifdef HAVE_INTERP_INTERN
258 sys_intern_init();
259#endif
260
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);
1fcf4c12 266#ifdef USE_ITHREADS
13137afc
AB		 267 PL_regex_padav = newAV();
268 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
269 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 270#endif
e5dd39fc
AB		 271#ifdef USE_REENTRANT_API
272 New(31337, PL_reentrant_buffer,1, REBUF);
273 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
274#endif
3d47000e
AB		 275
276 /* Note that strtab is a rather special HV. Assumptions are made
277 about not iterating on it, and not adding tie magic to it.
278 It is properly deallocated in perl_destruct() */
279 PL_strtab = newHV();
280
281#ifdef USE_5005THREADS
282 MUTEX_INIT(&PL_strtab_mutex);
283#endif
284 HvSHAREKEYS_off(PL_strtab); /* mandatory */
285 hv_ksplit(PL_strtab, 512);
286
0631ea03
AB		 287#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
288 _dyld_lookup_and_bind
289 ("__environ", (unsigned long *) &environ_pointer, NULL);
290#endif /* environ */
291
292#ifdef USE_ENVIRON_ARRAY
293 PL_origenviron = environ;
294#endif
295
8990e307 296 ENTER;
79072805
LW		 297}
298
954c1994
GS		 299/*
300=for apidoc perl_destruct
301
302Shuts down a Perl interpreter. See L<perlembed>.
303
304=cut
305*/
306
31d77e54 307int
0cb96387 308perl_destruct(pTHXx)
79072805 309{
7c474504 310 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 311 HV *hv;
4d1ff10f 312#ifdef USE_5005THREADS
33f46ff6 313 Thread t;
cea2e8a9 314 dTHX;
4d1ff10f 315#endif /* USE_5005THREADS */
8990e307 316
7766f137
GS		 317 /* wait for all pseudo-forked children to finish */
318 PERL_WAIT_FOR_CHILDREN;
319
4d1ff10f 320#ifdef USE_5005THREADS
0f15f207 321#ifndef FAKE_THREADS
8023c3ce
MB		 322 /* Pass 1 on any remaining threads: detach joinables, join zombies */
323 retry_cleanup:
533c011a 324 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 325 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 326 "perl_destruct: waiting for %d threads...\n",
533c011a 327 PL_nthreads - 1));
33f46ff6 328 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 329 MUTEX_LOCK(&t->mutex);
330 switch (ThrSTATE(t)) {
331 AV *av;
c7848ba1 332 case THRf_ZOMBIE:
bf49b057 333 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 334 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 335 ThrSETSTATE(t, THRf_DEAD);
336 MUTEX_UNLOCK(&t->mutex);
533c011a 337 PL_nthreads--;
8023c3ce
MB		 338 /*
339 * The SvREFCNT_dec below may take a long time (e.g. av
340 * may contain an object scalar whose destructor gets
341 * called) so we have to unlock threads_mutex and start
342 * all over again.
343 */
533c011a 344 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 345 JOIN(t, &av);
605e5515 346 SvREFCNT_dec((SV*)av);
bf49b057 347 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 348 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 349 goto retry_cleanup;
c7848ba1 350 case THRf_R_JOINABLE:
bf49b057 351 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 352 "perl_destruct: detaching thread %p\n", t));
353 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 354 /*
c7848ba1
MB		 355 * We unlock threads_mutex and t->mutex in the opposite order
356 * from which we locked them just so that DETACH won't
357 * deadlock if it panics. It's only a breach of good style
358 * not a bug since they are unlocks not locks.
359 */
533c011a 360 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 361 DETACH(t);
362 MUTEX_UNLOCK(&t->mutex);
8023c3ce 363 goto retry_cleanup;
c7848ba1 364 default:
bf49b057 365 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 366 "perl_destruct: ignoring %p (state %u)\n",
367 t, ThrSTATE(t)));
368 MUTEX_UNLOCK(&t->mutex);
c7848ba1 369 /* fall through and out */
33f46ff6
MB		 370 }
371 }
8023c3ce
MB		 372 /* We leave the above "Pass 1" loop with threads_mutex still locked */
373
374 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 375 while (PL_nthreads > 1)
11343788 376 {
bf49b057 377 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 378 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 379 PL_nthreads - 1));
380 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 381 }
382 /* At this point, we're the last thread */
533c011a 383 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 384 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 385 MUTEX_DESTROY(&PL_threads_mutex);
386 COND_DESTROY(&PL_nthreads_cond);
b57a092c 387 PL_nthreads--;
0f15f207 388#endif /* !defined(FAKE_THREADS) */
4d1ff10f 389#endif /* USE_5005THREADS */
11343788 390
3280af22 391 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 392#ifdef DEBUGGING
393 {
394 char *s;
155aba94 395 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 396 int i = atoi(s);
397 if (destruct_level < i)
398 destruct_level = i;
399 }
4633a7c4
LW		 400 }
401#endif
402
31d77e54
AB		 403
404 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 405 dJMPENV;
406 int x = 0;
407
408 JMPENV_PUSH(x);
409 if (PL_endav && !PL_minus_c)
410 call_list(PL_scopestack_ix, PL_endav);
411 JMPENV_POP;
26f423df 412 }
f3faeb53 413 LEAVE;
a0d0e21e
LW		 414 FREETMPS;
415
ff0cee69 416 /* We must account for everything. */
417
418 /* Destroy the main CV and syntax tree */
3280af22
NIS		 419 if (PL_main_root) {
420 PL_curpad = AvARRAY(PL_comppad);
421 op_free(PL_main_root);
422 PL_main_root = Nullop;
a0d0e21e 423 }
3280af22
NIS		 424 PL_curcop = &PL_compiling;
425 PL_main_start = Nullop;
426 SvREFCNT_dec(PL_main_cv);
427 PL_main_cv = Nullcv;
24d3c518 428 PL_dirty = TRUE;
ff0cee69 429
13621cfb
NIS		 430 /* Tell PerlIO we are about to tear things apart in case
431 we have layers which are using resources that should
432 be cleaned up now.
433 */
434
435 PerlIO_destruct(aTHX);
436
3280af22 437 if (PL_sv_objcount) {
a0d0e21e
LW		 438 /*
439 * Try to destruct global references. We do this first so that the
440 * destructors and destructees still exist. Some sv's might remain.
441 * Non-referenced objects are on their own.
442 */
a0d0e21e 443 sv_clean_objs();
8990e307
LW		 444 }
445
5cd24f17 446 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 447 SvREFCNT_dec(PL_warnhook);
448 PL_warnhook = Nullsv;
449 SvREFCNT_dec(PL_diehook);
450 PL_diehook = Nullsv;
5cd24f17 451
4b556e6c 452 /* call exit list functions */
3280af22 453 while (PL_exitlistlen-- > 0)
acfe0abc 454 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 455
3280af22 456 Safefree(PL_exitlist);
4b556e6c 457
a0d0e21e 458 if (destruct_level == 0){
8990e307 459
a0d0e21e 460 DEBUG_P(debprofdump());
ac27b0f5 461
a0d0e21e 462 /* The exit() function will do everything that needs doing. */
31d77e54 463 return STATUS_NATIVE_EXPORT;;
a0d0e21e 464 }
5dd60ef7 465
551a8b83
JH		 466 /* jettison our possibly duplicated environment */
467
468#ifdef USE_ENVIRON_ARRAY
469 if (environ != PL_origenviron) {
470 I32 i;
471
472 for (i = 0; environ[i]; i++)
4b420006 473 safesysfree(environ[i]);
0631ea03 474
4b420006
JH		 475 /* Must use safesysfree() when working with environ. */
476 safesysfree(environ);
551a8b83
JH		 477
478 environ = PL_origenviron;
479 }
480#endif
481
5f8cb046
DM		 482#ifdef USE_ITHREADS
483 /* the syntax tree is shared between clones
484 * so op_free(PL_main_root) only ReREFCNT_dec's
485 * REGEXPs in the parent interpreter
486 * we need to manually ReREFCNT_dec for the clones
487 */
488 {
489 I32 i = AvFILLp(PL_regex_padav) + 1;
490 SV **ary = AvARRAY(PL_regex_padav);
491
492 while (i) {
35061a7e 493 SV *resv = ary[--i];
ba89bb6e 494 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 495
496 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 497 /* this is PL_reg_curpm, already freed
35061a7e
DM		 498 * flag is set in regexec.c:S_regtry
499 */
500 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 501 }
1cc8b4c5
AB		 502 else if(SvREPADTMP(resv)) {
503 SvREPADTMP_off(resv);
504 }
35061a7e 505 else {
5f8cb046
DM		 506 ReREFCNT_dec(re);
507 }
508 }
509 }
510 SvREFCNT_dec(PL_regex_padav);
511 PL_regex_padav = Nullav;
512 PL_regex_pad = NULL;
513#endif
514
5f05dabc 515 /* loosen bonds of global variables */
516
3280af22
NIS		 517 if(PL_rsfp) {
518 (void)PerlIO_close(PL_rsfp);
519 PL_rsfp = Nullfp;
8ebc5c01 520 }
521
522 /* Filters for program text */
3280af22
NIS		 523 SvREFCNT_dec(PL_rsfp_filters);
524 PL_rsfp_filters = Nullav;
8ebc5c01 525
526 /* switches */
3280af22
NIS		 527 PL_preprocess = FALSE;
528 PL_minus_n = FALSE;
529 PL_minus_p = FALSE;
530 PL_minus_l = FALSE;
531 PL_minus_a = FALSE;
532 PL_minus_F = FALSE;
533 PL_doswitches = FALSE;
599cee73 534 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 535 PL_doextract = FALSE;
536 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 537 PL_unsafe = FALSE;
538
539 Safefree(PL_inplace);
540 PL_inplace = Nullch;
a7cb1f99 541 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 542
543 if (PL_e_script) {
544 SvREFCNT_dec(PL_e_script);
545 PL_e_script = Nullsv;
8ebc5c01 546 }
547
bc0a45ed
DM		 548 while (--PL_origargc >= 0) {
549 Safefree(PL_origargv[PL_origargc]);
550 }
551 Safefree(PL_origargv);
552
8ebc5c01 553 /* magical thingies */
554
7889fe52
NIS		 555 SvREFCNT_dec(PL_ofs_sv); /* $, */
556 PL_ofs_sv = Nullsv;
5f05dabc 557
7889fe52
NIS		 558 SvREFCNT_dec(PL_ors_sv); /* $\ */
559 PL_ors_sv = Nullsv;
8ebc5c01 560
3280af22
NIS		 561 SvREFCNT_dec(PL_rs); /* $/ */
562 PL_rs = Nullsv;
dc92893f 563
d33b2eba
GS		 564 PL_multiline = 0; /* $* */
565 Safefree(PL_osname); /* $^O */
566 PL_osname = Nullch;
5f05dabc 567
3280af22
NIS		 568 SvREFCNT_dec(PL_statname);
569 PL_statname = Nullsv;
570 PL_statgv = Nullgv;
5f05dabc 571
8ebc5c01 572 /* defgv, aka *_ should be taken care of elsewhere */
573
8ebc5c01 574 /* clean up after study() */
3280af22
NIS		 575 SvREFCNT_dec(PL_lastscream);
576 PL_lastscream = Nullsv;
577 Safefree(PL_screamfirst);
578 PL_screamfirst = 0;
579 Safefree(PL_screamnext);
580 PL_screamnext = 0;
8ebc5c01 581
7d5ea4e7
GS		 582 /* float buffer */
583 Safefree(PL_efloatbuf);
584 PL_efloatbuf = Nullch;
585 PL_efloatsize = 0;
586
8ebc5c01 587 /* startup and shutdown function lists */
3280af22 588 SvREFCNT_dec(PL_beginav);
5a837c8f 589 SvREFCNT_dec(PL_beginav_save);
3280af22 590 SvREFCNT_dec(PL_endav);
7d30b5c4 591 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 592 SvREFCNT_dec(PL_initav);
593 PL_beginav = Nullav;
5a837c8f 594 PL_beginav_save = Nullav;
3280af22 595 PL_endav = Nullav;
7d30b5c4 596 PL_checkav = Nullav;
3280af22 597 PL_initav = Nullav;
5618dfe8 598
8ebc5c01 599 /* shortcuts just get cleared */
3280af22 600 PL_envgv = Nullgv;
3280af22
NIS		 601 PL_incgv = Nullgv;
602 PL_hintgv = Nullgv;
603 PL_errgv = Nullgv;
604 PL_argvgv = Nullgv;
605 PL_argvoutgv = Nullgv;
606 PL_stdingv = Nullgv;
bf49b057 607 PL_stderrgv = Nullgv;
3280af22
NIS		 608 PL_last_in_gv = Nullgv;
609 PL_replgv = Nullgv;
5c831c24 610 PL_debstash = Nullhv;
8ebc5c01 611
612 /* reset so print() ends up where we expect */
613 setdefout(Nullgv);
5c831c24 614
7a1c5554
GS		 615 SvREFCNT_dec(PL_argvout_stack);
616 PL_argvout_stack = Nullav;
8ebc5c01 617
5c831c24
GS		 618 SvREFCNT_dec(PL_modglobal);
619 PL_modglobal = Nullhv;
620 SvREFCNT_dec(PL_preambleav);
621 PL_preambleav = Nullav;
622 SvREFCNT_dec(PL_subname);
623 PL_subname = Nullsv;
624 SvREFCNT_dec(PL_linestr);
625 PL_linestr = Nullsv;
626 SvREFCNT_dec(PL_pidstatus);
627 PL_pidstatus = Nullhv;
628 SvREFCNT_dec(PL_toptarget);
629 PL_toptarget = Nullsv;
630 SvREFCNT_dec(PL_bodytarget);
631 PL_bodytarget = Nullsv;
632 PL_formtarget = Nullsv;
633
d33b2eba 634 /* free locale stuff */
b9582b6a 635#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 636 Safefree(PL_collation_name);
637 PL_collation_name = Nullch;
b9582b6a 638#endif
d33b2eba 639
b9582b6a 640#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 641 Safefree(PL_numeric_name);
642 PL_numeric_name = Nullch;
a453c169 643 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 644#endif
d33b2eba 645
5c831c24
GS		 646 /* clear utf8 character classes */
647 SvREFCNT_dec(PL_utf8_alnum);
648 SvREFCNT_dec(PL_utf8_alnumc);
649 SvREFCNT_dec(PL_utf8_ascii);
650 SvREFCNT_dec(PL_utf8_alpha);
651 SvREFCNT_dec(PL_utf8_space);
652 SvREFCNT_dec(PL_utf8_cntrl);
653 SvREFCNT_dec(PL_utf8_graph);
654 SvREFCNT_dec(PL_utf8_digit);
655 SvREFCNT_dec(PL_utf8_upper);
656 SvREFCNT_dec(PL_utf8_lower);
657 SvREFCNT_dec(PL_utf8_print);
658 SvREFCNT_dec(PL_utf8_punct);
659 SvREFCNT_dec(PL_utf8_xdigit);
660 SvREFCNT_dec(PL_utf8_mark);
661 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 662 SvREFCNT_dec(PL_utf8_totitle);
5c831c24
GS		 663 SvREFCNT_dec(PL_utf8_tolower);
664 PL_utf8_alnum = Nullsv;
665 PL_utf8_alnumc = Nullsv;
666 PL_utf8_ascii = Nullsv;
667 PL_utf8_alpha = Nullsv;
668 PL_utf8_space = Nullsv;
669 PL_utf8_cntrl = Nullsv;
670 PL_utf8_graph = Nullsv;
671 PL_utf8_digit = Nullsv;
672 PL_utf8_upper = Nullsv;
673 PL_utf8_lower = Nullsv;
674 PL_utf8_print = Nullsv;
675 PL_utf8_punct = Nullsv;
676 PL_utf8_xdigit = Nullsv;
677 PL_utf8_mark = Nullsv;
678 PL_utf8_toupper = Nullsv;
679 PL_utf8_totitle = Nullsv;
680 PL_utf8_tolower = Nullsv;
681
971a9dd3
GS		 682 if (!specialWARN(PL_compiling.cop_warnings))
683 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 684 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 685 if (!specialCopIO(PL_compiling.cop_io))
686 SvREFCNT_dec(PL_compiling.cop_io);
687 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 688#ifdef USE_ITHREADS
689 Safefree(CopFILE(&PL_compiling));
690 CopFILE(&PL_compiling) = Nullch;
691 Safefree(CopSTASHPV(&PL_compiling));
692#else
01724ea0 693 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 694 CopFILEGV(&PL_compiling) = Nullgv;
695 /* cop_stash is not refcounted */
01724ea0 696#endif
5c831c24 697
a0d0e21e 698 /* Prepare to destruct main symbol table. */
5f05dabc 699
3280af22
NIS		 700 hv = PL_defstash;
701 PL_defstash = 0;
a0d0e21e 702 SvREFCNT_dec(hv);
5c831c24
GS		 703 SvREFCNT_dec(PL_curstname);
704 PL_curstname = Nullsv;
a0d0e21e 705
5a844595
GS		 706 /* clear queued errors */
707 SvREFCNT_dec(PL_errors);
708 PL_errors = Nullsv;
709
a0d0e21e 710 FREETMPS;
0453d815 711 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 712 if (PL_scopestack_ix != 0)
0453d815
PM		 713 Perl_warner(aTHX_ WARN_INTERNAL,
714 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 715 (long)PL_scopestack_ix);
716 if (PL_savestack_ix != 0)
0453d815
PM		 717 Perl_warner(aTHX_ WARN_INTERNAL,
718 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 719 (long)PL_savestack_ix);
720 if (PL_tmps_floor != -1)
0453d815 721 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 722 (long)PL_tmps_floor + 1);
a0d0e21e 723 if (cxstack_ix != -1)
0453d815 724 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 725 (long)cxstack_ix + 1);
a0d0e21e 726 }
8990e307
LW		 727
728 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 729 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 730 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 731
732 /* the 2 is for PL_fdpid and PL_strtab */
733 while (PL_sv_count > 2 && sv_clean_all())
734 ;
735
d33b2eba
GS		 736 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
737 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 738 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
739 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 740
d4777f27
GS		 741 AvREAL_off(PL_fdpid); /* no surviving entries */
742 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 743 PL_fdpid = Nullav;
744
6c644e78
GS		 745#ifdef HAVE_INTERP_INTERN
746 sys_intern_clear();
747#endif
748
6e72f9df 749 /* Destruct the global string table. */
750 {
751 /* Yell and reset the HeVAL() slots that are still holding refcounts,
752 * so that sv_free() won't fail on them.
753 */
754 I32 riter;
755 I32 max;
756 HE *hent;
757 HE **array;
758
759 riter = 0;
3280af22
NIS		 760 max = HvMAX(PL_strtab);
761 array = HvARRAY(PL_strtab);
6e72f9df 762 hent = array[0];
763 for (;;) {
0453d815
PM		 764 if (hent && ckWARN_d(WARN_INTERNAL)) {
765 Perl_warner(aTHX_ WARN_INTERNAL,
766 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 767 HeVAL(hent) - Nullsv, HeKEY(hent));
768 HeVAL(hent) = Nullsv;
769 hent = HeNEXT(hent);
770 }
771 if (!hent) {
772 if (++riter > max)
773 break;
774 hent = array[riter];
775 }
776 }
777 }
3280af22 778 SvREFCNT_dec(PL_strtab);
6e72f9df 779
e652bb2f 780#ifdef USE_ITHREADS
a0739874
DM		 781 /* free the pointer table used for cloning */
782 ptr_table_free(PL_ptr_table);
53186e96 783#endif
a0739874 784
d33b2eba
GS		 785 /* free special SVs */
786
787 SvREFCNT(&PL_sv_yes) = 0;
788 sv_clear(&PL_sv_yes);
789 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 790 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 791
792 SvREFCNT(&PL_sv_no) = 0;
793 sv_clear(&PL_sv_no);
794 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 795 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 796
797 SvREFCNT(&PL_sv_undef) = 0;
798 SvREADONLY_off(&PL_sv_undef);
d33b2eba 799
0453d815
PM		 800 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
801 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 802
3a1ee7e8
NIS		 803#if 1 && defined(PERLIO_LAYERS)
804 /* No more IO - including error messages ! */
805 PerlIO_cleanup(aTHX);
806#endif
807
3280af22 808 Safefree(PL_origfilename);
3280af22 809 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 810 if (PL_reg_curpm)
811 Safefree(PL_reg_curpm);
82ba1be6 812 Safefree(PL_reg_poscache);
3280af22
NIS		 813 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
814 Safefree(PL_op_mask);
cf36064f
GS		 815 Safefree(PL_psig_ptr);
816 Safefree(PL_psig_name);
2c2666fc 817 Safefree(PL_bitcount);
ce08f86c 818 Safefree(PL_psig_pend);
6e72f9df 819 nuke_stacks();
3280af22 820 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 821
a0d0e21e 822 DEBUG_P(debprofdump());
4d1ff10f 823#ifdef USE_5005THREADS
5f08fbcd 824 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 825 MUTEX_DESTROY(&PL_sv_mutex);
826 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 827 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 828 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 829 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 830#ifdef EMULATE_ATOMIC_REFCOUNTS
831 MUTEX_DESTROY(&PL_svref_mutex);
832#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 833
8023c3ce 834 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 835 Safefree(SvPVX(PL_thrsv));
836 Safefree(SvANY(PL_thrsv));
837 Safefree(PL_thrsv);
838 PL_thrsv = Nullsv;
4d1ff10f 839#endif /* USE_5005THREADS */
d33b2eba 840
e5dd39fc
AB		 841#ifdef USE_REENTRANT_API
842 Safefree(PL_reentrant_buffer->tmbuff);
843 Safefree(PL_reentrant_buffer);
844#endif
845
612f20c3
GS		 846 sv_free_arenas();
847
fc36a67e 848 /* As the absolutely last thing, free the non-arena SV for mess() */
849
3280af22 850 if (PL_mess_sv) {
9c63abab
GS		 851 /* it could have accumulated taint magic */
852 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
853 MAGIC* mg;
854 MAGIC* moremagic;
855 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
856 moremagic = mg->mg_moremagic;
14befaf4
DM		 857 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
858 && mg->mg_len >= 0)
9c63abab
GS		 859 Safefree(mg->mg_ptr);
860 Safefree(mg);
861 }
862 }
fc36a67e 863 /* we know that type >= SVt_PV */
155aba94 864 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 865 Safefree(SvPVX(PL_mess_sv));
866 Safefree(SvANY(PL_mess_sv));
867 Safefree(PL_mess_sv);
868 PL_mess_sv = Nullsv;
fc36a67e 869 }
31d77e54 870 return STATUS_NATIVE_EXPORT;
79072805
LW		 871}
872
954c1994
GS		 873/*
874=for apidoc perl_free
875
876Releases a Perl interpreter. See L<perlembed>.
877
878=cut
879*/
880
79072805 881void
0cb96387 882perl_free(pTHXx)
79072805 883{
acfe0abc 884#if defined(WIN32) || defined(NETWARE)
ce3e5b80 885# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 886# ifdef NETWARE
887 void *host = nw_internal_host;
888# else
889 void *host = w32_internal_host;
890# endif
ce3e5b80 891 PerlMem_free(aTHXx);
acfe0abc
GS		 892# ifdef NETWARE
893 nw5_delete_internal_host(host);
894# else
895 win32_delete_internal_host(host);
896# endif
1c0ca838
GS		 897# else
898 PerlMem_free(aTHXx);
899# endif
acfe0abc
GS		 900#else
901 PerlMem_free(aTHXx);
76e3520e 902#endif
79072805
LW		 903}
904
4b556e6c 905void
864dbfa3 906Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 907{
3280af22
NIS		 908 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
909 PL_exitlist[PL_exitlistlen].fn = fn;
910 PL_exitlist[PL_exitlistlen].ptr = ptr;
911 ++PL_exitlistlen;
4b556e6c
JD		 912}
913
954c1994
GS		 914/*
915=for apidoc perl_parse
916
917Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
918
919=cut
920*/
921
79072805 922int
0cb96387 923perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 924{
6224f72b 925 I32 oldscope;
6224f72b 926 int ret;
db36c5a1 927 dJMPENV;
4d1ff10f 928#ifdef USE_5005THREADS
cea2e8a9
GS		 929 dTHX;
930#endif
8d063cd8 931
a687059c
LW		 932#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
933#ifdef IAMSUID
934#undef IAMSUID
cea2e8a9 935 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 936setuid perl scripts securely.\n");
937#endif
938#endif
939
3280af22 940 PL_origargc = argc;
bc0a45ed
DM		 941 {
942 /* we copy rather than point to argv
943 * since perl_clone will copy and perl_destruct
3a1ee7e8 944 * has no way of knowing if we've made a copy or
bc0a45ed
DM		 945 * just point to argv
946 */
947 int i = PL_origargc;
948 New(0, PL_origargv, i+1, char*);
949 PL_origargv[i] = '\0';
950 while (i-- > 0) {
951 PL_origargv[i] = savepv(argv[i]);
952 }
953 }
954
0631ea03 955
a0d0e21e 956
3280af22 957 if (PL_do_undump) {
a0d0e21e
LW		 958
959 /* Come here if running an undumped a.out. */
960
3280af22
NIS		 961 PL_origfilename = savepv(argv[0]);
962 PL_do_undump = FALSE;
a0d0e21e 963 cxstack_ix = -1; /* start label stack again */
748a9306 964 init_ids();
a0d0e21e
LW		 965 init_postdump_symbols(argc,argv,env);
966 return 0;
967 }
968
3280af22
NIS		 969 if (PL_main_root) {
970 PL_curpad = AvARRAY(PL_comppad);
971 op_free(PL_main_root);
972 PL_main_root = Nullop;
ff0cee69 973 }
3280af22
NIS		 974 PL_main_start = Nullop;
975 SvREFCNT_dec(PL_main_cv);
976 PL_main_cv = Nullcv;
79072805 977
3280af22
NIS		 978 time(&PL_basetime);
979 oldscope = PL_scopestack_ix;
599cee73 980 PL_dowarn = G_WARN_OFF;
f86702cc 981
14dd3ad8
GS		 982#ifdef PERL_FLEXIBLE_EXCEPTIONS
983 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
984#else
985 JMPENV_PUSH(ret);
986#endif
6224f72b 987 switch (ret) {
312caa8e 988 case 0:
14dd3ad8
GS		 989#ifndef PERL_FLEXIBLE_EXCEPTIONS
990 parse_body(env,xsinit);
991#endif
7d30b5c4
GS		 992 if (PL_checkav)
993 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 994 ret = 0;
995 break;
6224f72b
GS		 996 case 1:
997 STATUS_ALL_FAILURE;
998 /* FALL THROUGH */
999 case 2:
1000 /* my_exit() was called */
3280af22 1001 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1002 LEAVE;
1003 FREETMPS;
3280af22 1004 PL_curstash = PL_defstash;
7d30b5c4
GS		 1005 if (PL_checkav)
1006 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1007 ret = STATUS_NATIVE_EXPORT;
1008 break;
6224f72b 1009 case 3:
bf49b057 1010 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1011 ret = 1;
1012 break;
6224f72b 1013 }
14dd3ad8
GS		 1014 JMPENV_POP;
1015 return ret;
1016}
1017
1018#ifdef PERL_FLEXIBLE_EXCEPTIONS
1019STATIC void *
1020S_vparse_body(pTHX_ va_list args)
1021{
1022 char **env = va_arg(args, char**);
1023 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1024
1025 return parse_body(env, xsinit);
312caa8e 1026}
14dd3ad8 1027#endif
312caa8e
CS		 1028
1029STATIC void *
14dd3ad8 1030S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1031{
312caa8e
CS		 1032 int argc = PL_origargc;
1033 char **argv = PL_origargv;
312caa8e
CS		 1034 char *scriptname = NULL;
1035 int fdscript = -1;
1036 VOL bool dosearch = FALSE;
1037 char *validarg = "";
1038 AV* comppadlist;
1039 register SV *sv;
1040 register char *s;
cf756827 1041 char *cddir = Nullch;
312caa8e 1042
3280af22 1043 sv_setpvn(PL_linestr,"",0);
79cb57f6 1044 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1045 SAVEFREESV(sv);
1046 init_main_stash();
54310121 1047
6224f72b
GS		 1048 for (argc--,argv++; argc > 0; argc--,argv++) {
1049 if (argv[0][0] != '-' || !argv[0][1])
1050 break;
1051#ifdef DOSUID
1052 if (*validarg)
1053 validarg = " PHOOEY ";
1054 else
1055 validarg = argv[0];
13281fa4 1056#endif
6224f72b
GS		 1057 s = argv[0]+1;
1058 reswitch:
1059 switch (*s) {
729a02f2
GS		 1060 case 'C':
1061#ifdef WIN32
c0932edc 1062 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1063 /* FALL THROUGH */
1064#endif
1d5472a9
GS		 1065#ifndef PERL_STRICT_CR
1066 case '\r':
1067#endif
6224f72b
GS		 1068 case ' ':
1069 case '0':
1070 case 'F':
1071 case 'a':
1072 case 'c':
1073 case 'd':
1074 case 'D':
1075 case 'h':
1076 case 'i':
1077 case 'l':
1078 case 'M':
1079 case 'm':
1080 case 'n':
1081 case 'p':
1082 case 's':
1083 case 'u':
1084 case 'U':
1085 case 'v':
599cee73
PM		 1086 case 'W':
1087 case 'X':
6224f72b 1088 case 'w':
155aba94 1089 if ((s = moreswitches(s)))
6224f72b
GS		 1090 goto reswitch;
1091 break;
33b78306 1092
6224f72b 1093 case 'T':
3280af22 1094 PL_tainting = TRUE;
6224f72b
GS		 1095 s++;
1096 goto reswitch;
f86702cc 1097
6224f72b 1098 case 'e':
bf4acbe4
GS		 1099#ifdef MACOS_TRADITIONAL
1100 /* ignore -e for Dev:Pseudo argument */
1101 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1102 break;
bf4acbe4 1103#endif
3280af22 1104 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1105 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1106 if (!PL_e_script) {
79cb57f6 1107 PL_e_script = newSVpvn("",0);
0cb96387 1108 filter_add(read_e_script, NULL);
6224f72b
GS		 1109 }
1110 if (*++s)
3280af22 1111 sv_catpv(PL_e_script, s);
6224f72b 1112 else if (argv[1]) {
3280af22 1113 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1114 argc--,argv++;
1115 }
1116 else
cea2e8a9 1117 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1118 sv_catpv(PL_e_script, "\n");
6224f72b 1119 break;
afe37c7d 1120
6224f72b
GS		 1121 case 'I': /* -I handled both here and in moreswitches() */
1122 forbid_setid("-I");
1123 if (!*++s && (s=argv[1]) != Nullch) {
1124 argc--,argv++;
1125 }
6224f72b 1126 if (s && *s) {
0df16ed7
GS		 1127 char *p;
1128 STRLEN len = strlen(s);
1129 p = savepvn(s, len);
9c8a64f0 1130 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1131 sv_catpvn(sv, "-I", 2);
1132 sv_catpvn(sv, p, len);
1133 sv_catpvn(sv, " ", 1);
6224f72b 1134 Safefree(p);
0df16ed7
GS		 1135 }
1136 else
a67e862a 1137 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1138 break;
1139 case 'P':
1140 forbid_setid("-P");
3280af22 1141 PL_preprocess = TRUE;
6224f72b
GS		 1142 s++;
1143 goto reswitch;
1144 case 'S':
1145 forbid_setid("-S");
1146 dosearch = TRUE;
1147 s++;
1148 goto reswitch;
1149 case 'V':
3280af22
NIS		 1150 if (!PL_preambleav)
1151 PL_preambleav = newAV();
1152 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1153 if (*++s != ':') {
3280af22 1154 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1155#ifdef VMS
6b88bc9c 1156 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1157#else
3280af22 1158 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1159#endif
3280af22 1160 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1161# ifdef DEBUGGING
3280af22 1162 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1163# endif
6224f72b 1164# ifdef MULTIPLICITY
8f872242 1165 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1166# endif
4d1ff10f
AB		 1167# ifdef USE_5005THREADS
1168 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1169# endif
ac5e8965
JH		 1170# ifdef USE_ITHREADS
1171 sv_catpv(PL_Sv," USE_ITHREADS");
1172# endif
10cc9d2a
JH		 1173# ifdef USE_64_BIT_INT
1174 sv_catpv(PL_Sv," USE_64_BIT_INT");
1175# endif
1176# ifdef USE_64_BIT_ALL
1177 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1178# endif
1179# ifdef USE_LONG_DOUBLE
1180 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1181# endif
53430762
JH		 1182# ifdef USE_LARGE_FILES
1183 sv_catpv(PL_Sv," USE_LARGE_FILES");
1184# endif
ac5e8965
JH		 1185# ifdef USE_SOCKS
1186 sv_catpv(PL_Sv," USE_SOCKS");
1187# endif
b363f7ed
GS		 1188# ifdef PERL_IMPLICIT_CONTEXT
1189 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1190# endif
1191# ifdef PERL_IMPLICIT_SYS
1192 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1193# endif
3280af22 1194 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1195
6224f72b
GS		 1196#if defined(LOCAL_PATCH_COUNT)
1197 if (LOCAL_PATCH_COUNT > 0) {
1198 int i;
3280af22 1199 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1200 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1201 if (PL_localpatches[i])
cea2e8a9 1202 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1203 }
1204 }
1205#endif
cea2e8a9 1206 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1207#ifdef __DATE__
1208# ifdef __TIME__
cea2e8a9 1209 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1210# else
cea2e8a9 1211 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1212# endif
1213#endif
3280af22 1214 sv_catpv(PL_Sv, "; \
6224f72b 1215$\"=\"\\n \"; \
69fcd688
JH		 1216@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1217#ifdef __CYGWIN__
1218 sv_catpv(PL_Sv,"\
1219push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1220#endif
1221 sv_catpv(PL_Sv, "\
6224f72b
GS		 1222print \" \\%ENV:\\n @env\\n\" if @env; \
1223print \" \\@INC:\\n @INC\\n\";");
1224 }
1225 else {
3280af22
NIS		 1226 PL_Sv = newSVpv("config_vars(qw(",0);
1227 sv_catpv(PL_Sv, ++s);
1228 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1229 s += strlen(s);
1230 }
3280af22 1231 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1232 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1233 goto reswitch;
1234 case 'x':
3280af22 1235 PL_doextract = TRUE;
6224f72b
GS		 1236 s++;
1237 if (*s)
f4c556ac 1238 cddir = s;
6224f72b
GS		 1239 break;
1240 case 0:
1241 break;
1242 case '-':
1243 if (!*++s || isSPACE(*s)) {
1244 argc--,argv++;
1245 goto switch_end;
1246 }
1247 /* catch use of gnu style long options */
1248 if (strEQ(s, "version")) {
1249 s = "v";
1250 goto reswitch;
1251 }
1252 if (strEQ(s, "help")) {
1253 s = "h";
1254 goto reswitch;
1255 }
1256 s--;
1257 /* FALL THROUGH */
1258 default:
cea2e8a9 1259 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1260 }
1261 }
6224f72b 1262 switch_end:
54310121 1263
f675dbe5
CB		 1264 if (
1265#ifndef SECURE_INTERNAL_GETENV
1266 !PL_tainting &&
1267#endif
cf756827 1268 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1269 {
cf756827 1270 char *popt = s;
74288ac8
GS		 1271 while (isSPACE(*s))
1272 s++;
1273 if (*s == '-' && *(s+1) == 'T')
1274 PL_tainting = TRUE;
1275 else {
cf756827 1276 char *popt_copy = Nullch;
74288ac8 1277 while (s && *s) {
4ea8f8fb 1278 char *d;
74288ac8
GS		 1279 while (isSPACE(*s))
1280 s++;
1281 if (*s == '-') {
1282 s++;
1283 if (isSPACE(*s))
1284 continue;
1285 }
4ea8f8fb 1286 d = s;
74288ac8
GS		 1287 if (!*s)
1288 break;
1289 if (!strchr("DIMUdmw", *s))
cea2e8a9 1290 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1291 while (++s && *s) {
1292 if (isSPACE(*s)) {
cf756827
GS		 1293 if (!popt_copy) {
1294 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1295 s = popt_copy + (s - popt);
1296 d = popt_copy + (d - popt);
1297 }
4ea8f8fb
MS		 1298 *s++ = '\0';
1299 break;
1300 }
1301 }
1302 moreswitches(d);
6224f72b 1303 }
6224f72b
GS		 1304 }
1305 }
a0d0e21e 1306
6224f72b
GS		 1307 if (!scriptname)
1308 scriptname = argv[0];
3280af22 1309 if (PL_e_script) {
6224f72b
GS		 1310 argc++,argv--;
1311 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1312 }
1313 else if (scriptname == Nullch) {
1314#ifdef MSDOS
1315 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1316 moreswitches("h");
1317#endif
1318 scriptname = "-";
1319 }
1320
1321 init_perllib();
1322
1323 open_script(scriptname,dosearch,sv,&fdscript);
1324
1325 validate_suid(validarg, scriptname,fdscript);
1326
64ca3a65 1327#ifndef PERL_MICRO
0b5b802d
GS		 1328#if defined(SIGCHLD) || defined(SIGCLD)
1329 {
1330#ifndef SIGCHLD
1331# define SIGCHLD SIGCLD
1332#endif
1333 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1334 if (sigstate == SIG_IGN) {
1335 if (ckWARN(WARN_SIGNAL))
1336 Perl_warner(aTHX_ WARN_SIGNAL,
1337 "Can't ignore signal CHLD, forcing to default");
1338 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1339 }
1340 }
1341#endif
64ca3a65 1342#endif
0b5b802d 1343
bf4acbe4
GS		 1344#ifdef MACOS_TRADITIONAL
1345 if (PL_doextract || gMacPerl_AlwaysExtract) {
1346#else
f4c556ac 1347 if (PL_doextract) {
bf4acbe4 1348#endif
6224f72b 1349 find_beginning();
f4c556ac
GS		 1350 if (cddir && PerlDir_chdir(cddir) < 0)
1351 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1352
1353 }
6224f72b 1354
3280af22
NIS		 1355 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1356 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1357 CvUNIQUE_on(PL_compcv);
1358
1359 PL_comppad = newAV();
1360 av_push(PL_comppad, Nullsv);
1361 PL_curpad = AvARRAY(PL_comppad);
1362 PL_comppad_name = newAV();
1363 PL_comppad_name_fill = 0;
1364 PL_min_intro_pending = 0;
1365 PL_padix = 0;
4d1ff10f 1366#ifdef USE_5005THREADS
79cb57f6 1367 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1368 PL_curpad[0] = (SV*)newAV();
1369 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1370 CvOWNER(PL_compcv) = 0;
1371 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1372 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1373#endif /* USE_5005THREADS */
6224f72b
GS		 1374
1375 comppadlist = newAV();
1376 AvREAL_off(comppadlist);
3280af22
NIS		 1377 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1378 av_store(comppadlist, 1, (SV*)PL_comppad);
1379 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1380
0c4f7ff0 1381 boot_core_PerlIO();
6224f72b 1382 boot_core_UNIVERSAL();
9a34ef1d 1383#ifndef PERL_MICRO
09bef843 1384 boot_core_xsutils();
9a34ef1d 1385#endif
6224f72b
GS		 1386
1387 if (xsinit)
acfe0abc 1388 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1389#ifndef PERL_MICRO
ed79a026 1390#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1391 init_os_extras();
6224f72b 1392#endif
64ca3a65 1393#endif
6224f72b 1394
29209bc5 1395#ifdef USE_SOCKS
1b9c9cf5
DH		 1396# ifdef HAS_SOCKS5_INIT
1397 socks5_init(argv[0]);
1398# else
29209bc5 1399 SOCKSinit(argv[0]);
1b9c9cf5 1400# endif
ac27b0f5 1401#endif
29209bc5 1402
6224f72b
GS		 1403 init_predump_symbols();
1404 /* init_postdump_symbols not currently designed to be called */
1405 /* more than once (ENV isn't cleared first, for example) */
1406 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1407 if (!PL_do_undump)
6224f72b
GS		 1408 init_postdump_symbols(argc,argv,env);
1409
1410 init_lexer();
1411
1412 /* now parse the script */
1413
91487cfc 1414 SETERRNO(0,SS$_NORMAL);
3280af22 1415 PL_error_count = 0;
bf4acbe4
GS		 1416#ifdef MACOS_TRADITIONAL
1417 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1418 if (PL_minus_c)
1419 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1420 else {
1421 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1422 MacPerl_MPWFileName(PL_origfilename));
1423 }
1424 }
1425#else
3280af22
NIS		 1426 if (yyparse() || PL_error_count) {
1427 if (PL_minus_c)
cea2e8a9 1428 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1429 else {
cea2e8a9 1430 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1431 PL_origfilename);
6224f72b
GS		 1432 }
1433 }
bf4acbe4 1434#endif
57843af0 1435 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1436 PL_curstash = PL_defstash;
1437 PL_preprocess = FALSE;
1438 if (PL_e_script) {
1439 SvREFCNT_dec(PL_e_script);
1440 PL_e_script = Nullsv;
6224f72b
GS		 1441 }
1442
8bfdd7d9
HS		 1443/*
1444 Not sure that this is still the right place to do this now that we
1445 no longer use PL_nrs. HVDS 2001/09/09
1446*/
864dbfa3 1447 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1448
3280af22 1449 if (PL_do_undump)
6224f72b
GS		 1450 my_unexec();
1451
57843af0
GS		 1452 if (isWARN_ONCE) {
1453 SAVECOPFILE(PL_curcop);
1454 SAVECOPLINE(PL_curcop);
3280af22 1455 gv_check(PL_defstash);
57843af0 1456 }
6224f72b
GS		 1457
1458 LEAVE;
1459 FREETMPS;
1460
1461#ifdef MYMALLOC
1462 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1463 dump_mstats("after compilation:");
1464#endif
1465
1466 ENTER;
3280af22 1467 PL_restartop = 0;
312caa8e 1468 return NULL;
6224f72b
GS		 1469}
1470
954c1994
GS		 1471/*
1472=for apidoc perl_run
1473
1474Tells a Perl interpreter to run. See L<perlembed>.
1475
1476=cut
1477*/
1478
6224f72b 1479int
0cb96387 1480perl_run(pTHXx)
6224f72b 1481{
6224f72b 1482 I32 oldscope;
14dd3ad8 1483 int ret = 0;
db36c5a1 1484 dJMPENV;
4d1ff10f 1485#ifdef USE_5005THREADS
cea2e8a9
GS		 1486 dTHX;
1487#endif
6224f72b 1488
3280af22 1489 oldscope = PL_scopestack_ix;
96e176bf
CL		 1490#ifdef VMS
1491 VMSISH_HUSHED = 0;
1492#endif
6224f72b 1493
14dd3ad8 1494#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1495 redo_body:
14dd3ad8
GS		 1496 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1497#else
1498 JMPENV_PUSH(ret);
1499#endif
6224f72b
GS		 1500 switch (ret) {
1501 case 1:
1502 cxstack_ix = -1; /* start context stack again */
312caa8e 1503 goto redo_body;
14dd3ad8
GS		 1504 case 0: /* normal completion */
1505#ifndef PERL_FLEXIBLE_EXCEPTIONS
1506 redo_body:
1507 run_body(oldscope);
1508#endif
1509 /* FALL THROUGH */
1510 case 2: /* my_exit() */
3280af22 1511 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1512 LEAVE;
1513 FREETMPS;
3280af22 1514 PL_curstash = PL_defstash;
3a1ee7e8 1515 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB		 1516 PL_endav && !PL_minus_c)
1517 call_list(oldscope, PL_endav);
6224f72b
GS		 1518#ifdef MYMALLOC
1519 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1520 dump_mstats("after execution: ");
1521#endif
14dd3ad8
GS		 1522 ret = STATUS_NATIVE_EXPORT;
1523 break;
6224f72b 1524 case 3:
312caa8e
CS		 1525 if (PL_restartop) {
1526 POPSTACK_TO(PL_mainstack);
1527 goto redo_body;
6224f72b 1528 }
bf49b057 1529 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1530 FREETMPS;
14dd3ad8
GS		 1531 ret = 1;
1532 break;
6224f72b
GS		 1533 }
1534
14dd3ad8
GS		 1535 JMPENV_POP;
1536 return ret;
312caa8e
CS		 1537}
1538
14dd3ad8 1539#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1540STATIC void *
14dd3ad8 1541S_vrun_body(pTHX_ va_list args)
312caa8e 1542{
312caa8e
CS		 1543 I32 oldscope = va_arg(args, I32);
1544
14dd3ad8
GS		 1545 return run_body(oldscope);
1546}
1547#endif
1548
1549
1550STATIC void *
1551S_run_body(pTHX_ I32 oldscope)
1552{
6224f72b 1553 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1554 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1555
3280af22 1556 if (!PL_restartop) {
6224f72b
GS		 1557 DEBUG_x(dump_all());
1558 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1559 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1560 PTR2UV(thr)));
6224f72b 1561
3280af22 1562 if (PL_minus_c) {
bf4acbe4 1563#ifdef MACOS_TRADITIONAL
be708cc0 1564 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1565#else
bf49b057 1566 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1567#endif
6224f72b
GS		 1568 my_exit(0);
1569 }
3280af22 1570 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1571 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1572 if (PL_initav)
1573 call_list(oldscope, PL_initav);
6224f72b
GS		 1574 }
1575
1576 /* do it */
1577
3280af22 1578 if (PL_restartop) {
533c011a 1579 PL_op = PL_restartop;
3280af22 1580 PL_restartop = 0;
cea2e8a9 1581 CALLRUNOPS(aTHX);
6224f72b 1582 }
3280af22
NIS		 1583 else if (PL_main_start) {
1584 CvDEPTH(PL_main_cv) = 1;
533c011a 1585 PL_op = PL_main_start;
cea2e8a9 1586 CALLRUNOPS(aTHX);
6224f72b
GS		 1587 }
1588
f6b3007c
JH		 1589 my_exit(0);
1590 /* NOTREACHED */
312caa8e 1591 return NULL;
6224f72b
GS		 1592}
1593
954c1994
GS		 1594/*
1595=for apidoc p||get_sv
1596
1597Returns the SV of the specified Perl scalar. If C<create> is set and the
1598Perl variable does not exist then it will be created. If C<create> is not
1599set and the variable does not exist then NULL is returned.
1600
1601=cut
1602*/
1603
6224f72b 1604SV*
864dbfa3 1605Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1606{
1607 GV *gv;
4d1ff10f 1608#ifdef USE_5005THREADS
6224f72b
GS		 1609 if (name[1] == '\0' && !isALPHA(name[0])) {
1610 PADOFFSET tmp = find_threadsv(name);
411caa50 1611 if (tmp != NOT_IN_PAD)
6224f72b 1612 return THREADSV(tmp);
6224f72b 1613 }
4d1ff10f 1614#endif /* USE_5005THREADS */
6224f72b
GS		 1615 gv = gv_fetchpv(name, create, SVt_PV);
1616 if (gv)
1617 return GvSV(gv);
1618 return Nullsv;
1619}
1620
954c1994
GS		 1621/*
1622=for apidoc p||get_av
1623
1624Returns the AV of the specified Perl array. If C<create> is set and the
1625Perl variable does not exist then it will be created. If C<create> is not
1626set and the variable does not exist then NULL is returned.
1627
1628=cut
1629*/
1630
6224f72b 1631AV*
864dbfa3 1632Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1633{
1634 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1635 if (create)
1636 return GvAVn(gv);
1637 if (gv)
1638 return GvAV(gv);
1639 return Nullav;
1640}
1641
954c1994
GS		 1642/*
1643=for apidoc p||get_hv
1644
1645Returns the HV of the specified Perl hash. If C<create> is set and the
1646Perl variable does not exist then it will be created. If C<create> is not
1647set and the variable does not exist then NULL is returned.
1648
1649=cut
1650*/
1651
6224f72b 1652HV*
864dbfa3 1653Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1654{
a0d0e21e
LW		 1655 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1656 if (create)
1657 return GvHVn(gv);
1658 if (gv)
1659 return GvHV(gv);
1660 return Nullhv;
1661}
1662
954c1994
GS		 1663/*
1664=for apidoc p||get_cv
1665
1666Returns the CV of the specified Perl subroutine. If C<create> is set and
1667the Perl subroutine does not exist then it will be declared (which has the
1668same effect as saying C<sub name;>). If C<create> is not set and the
1669subroutine does not exist then NULL is returned.
1670
1671=cut
1672*/
1673
a0d0e21e 1674CV*
864dbfa3 1675Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1676{
1677 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1678 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1679 /* XXX this is probably not what they think they're getting.
1680 * It has the same effect as "sub name;", i.e. just a forward
1681 * declaration! */
8ebc5c01 1682 if (create && !GvCVu(gv))
774d564b 1683 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1684 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1685 Nullop,
a0d0e21e
LW		 1686 Nullop);
1687 if (gv)
8ebc5c01 1688 return GvCVu(gv);
a0d0e21e
LW		 1689 return Nullcv;
1690}
1691
79072805
LW		 1692/* Be sure to refetch the stack pointer after calling these routines. */
1693
954c1994
GS		 1694/*
1695=for apidoc p||call_argv
1696
1697Performs a callback to the specified Perl sub. See L<perlcall>.
1698
1699=cut
1700*/
1701
a0d0e21e 1702I32
864dbfa3 1703Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1704
8ac85365
NIS		 1705 /* See G_* flags in cop.h */
1706 /* null terminated arg list */
8990e307 1707{
a0d0e21e 1708 dSP;
8990e307 1709
924508f0 1710 PUSHMARK(SP);
a0d0e21e 1711 if (argv) {
8990e307 1712 while (*argv) {
a0d0e21e 1713 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1714 argv++;
1715 }
a0d0e21e 1716 PUTBACK;
8990e307 1717 }
864dbfa3 1718 return call_pv(sub_name, flags);
8990e307
LW		 1719}
1720
954c1994
GS		 1721/*
1722=for apidoc p||call_pv
1723
1724Performs a callback to the specified Perl sub. See L<perlcall>.
1725
1726=cut
1727*/
1728
a0d0e21e 1729I32
864dbfa3 1730Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1731 /* name of the subroutine */
1732 /* See G_* flags in cop.h */
a0d0e21e 1733{
864dbfa3 1734 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1735}
1736
954c1994
GS		 1737/*
1738=for apidoc p||call_method
1739
1740Performs a callback to the specified Perl method. The blessed object must
1741be on the stack. See L<perlcall>.
1742
1743=cut
1744*/
1745
a0d0e21e 1746I32
864dbfa3 1747Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1748 /* name of the subroutine */
1749 /* See G_* flags in cop.h */
a0d0e21e 1750{
968b3946 1751 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1752}
1753
1754/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1755/*
1756=for apidoc p||call_sv
1757
1758Performs a callback to the Perl sub whose name is in the SV. See
1759L<perlcall>.
1760
1761=cut
1762*/
1763
a0d0e21e 1764I32
864dbfa3 1765Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1766 /* See G_* flags in cop.h */
a0d0e21e 1767{
924508f0 1768 dSP;
a0d0e21e 1769 LOGOP myop; /* fake syntax tree node */
968b3946 1770 UNOP method_op;
aa689395 1771 I32 oldmark;
13689cfe 1772 volatile I32 retval = 0;
a0d0e21e 1773 I32 oldscope;
54310121 1774 bool oldcatch = CATCH_GET;
6224f72b 1775 int ret;
533c011a 1776 OP* oldop = PL_op;
db36c5a1 1777 dJMPENV;
1e422769 1778
a0d0e21e
LW		 1779 if (flags & G_DISCARD) {
1780 ENTER;
1781 SAVETMPS;
1782 }
1783
aa689395 1784 Zero(&myop, 1, LOGOP);
54310121 1785 myop.op_next = Nullop;
f51d4af5 1786 if (!(flags & G_NOARGS))
aa689395 1787 myop.op_flags |= OPf_STACKED;
54310121 1788 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1789 (flags & G_ARRAY) ? OPf_WANT_LIST :
1790 OPf_WANT_SCALAR);
462e5cf6 1791 SAVEOP();
533c011a 1792 PL_op = (OP*)&myop;
aa689395 1793
3280af22
NIS		 1794 EXTEND(PL_stack_sp, 1);
1795 *++PL_stack_sp = sv;
aa689395 1796 oldmark = TOPMARK;
3280af22 1797 oldscope = PL_scopestack_ix;
a0d0e21e 1798
3280af22 1799 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1800 /* Handle first BEGIN of -d. */
3280af22 1801 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1802 /* Try harder, since this may have been a sighandler, thus
1803 * curstash may be meaningless. */
3280af22 1804 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1805 && !(flags & G_NODEBUG))
533c011a 1806 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1807
968b3946
GS		 1808 if (flags & G_METHOD) {
1809 Zero(&method_op, 1, UNOP);
1810 method_op.op_next = PL_op;
1811 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1812 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1813 PL_op = (OP*)&method_op;
968b3946
GS		 1814 }
1815
312caa8e 1816 if (!(flags & G_EVAL)) {
0cdb2077 1817 CATCH_SET(TRUE);
14dd3ad8 1818 call_body((OP*)&myop, FALSE);
312caa8e 1819 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1820 CATCH_SET(oldcatch);
312caa8e
CS		 1821 }
1822 else {
d78bda3d 1823 myop.op_other = (OP*)&myop;
3280af22 1824 PL_markstack_ptr--;
4633a7c4
LW		 1825 /* we're trying to emulate pp_entertry() here */
1826 {
c09156bb 1827 register PERL_CONTEXT *cx;
54310121 1828 I32 gimme = GIMME_V;
ac27b0f5 1829
4633a7c4
LW		 1830 ENTER;
1831 SAVETMPS;
ac27b0f5 1832
968b3946 1833 push_return(Nullop);
1d76a5c3 1834 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1835 PUSHEVAL(cx, 0, 0);
533c011a 1836 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1837
faef0170 1838 PL_in_eval = EVAL_INEVAL;
4633a7c4 1839 if (flags & G_KEEPERR)
faef0170 1840 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1841 else
38a03e6e 1842 sv_setpv(ERRSV,"");
4633a7c4 1843 }
3280af22 1844 PL_markstack_ptr++;
a0d0e21e 1845
14dd3ad8
GS		 1846#ifdef PERL_FLEXIBLE_EXCEPTIONS
1847 redo_body:
1848 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1849 (OP*)&myop, FALSE);
14dd3ad8
GS		 1850#else
1851 JMPENV_PUSH(ret);
1852#endif
6224f72b
GS		 1853 switch (ret) {
1854 case 0:
14dd3ad8
GS		 1855#ifndef PERL_FLEXIBLE_EXCEPTIONS
1856 redo_body:
1857 call_body((OP*)&myop, FALSE);
1858#endif
312caa8e
CS		 1859 retval = PL_stack_sp - (PL_stack_base + oldmark);
1860 if (!(flags & G_KEEPERR))
1861 sv_setpv(ERRSV,"");
a0d0e21e 1862 break;
6224f72b 1863 case 1:
f86702cc 1864 STATUS_ALL_FAILURE;
a0d0e21e 1865 /* FALL THROUGH */
6224f72b 1866 case 2:
a0d0e21e 1867 /* my_exit() was called */
3280af22 1868 PL_curstash = PL_defstash;
a0d0e21e 1869 FREETMPS;
14dd3ad8 1870 JMPENV_POP;
cc3604b1 1871 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1872 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1873 my_exit_jump();
a0d0e21e 1874 /* NOTREACHED */
6224f72b 1875 case 3:
3280af22 1876 if (PL_restartop) {
533c011a 1877 PL_op = PL_restartop;
3280af22 1878 PL_restartop = 0;
312caa8e 1879 goto redo_body;
a0d0e21e 1880 }
3280af22 1881 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1882 if (flags & G_ARRAY)
1883 retval = 0;
1884 else {
1885 retval = 1;
3280af22 1886 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1887 }
312caa8e 1888 break;
a0d0e21e 1889 }
a0d0e21e 1890
3280af22 1891 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1892 SV **newsp;
1893 PMOP *newpm;
1894 I32 gimme;
c09156bb 1895 register PERL_CONTEXT *cx;
a0a2876f
LW		 1896 I32 optype;
1897
1898 POPBLOCK(cx,newpm);
1899 POPEVAL(cx);
1900 pop_return();
3280af22 1901 PL_curpm = newpm;
a0a2876f 1902 LEAVE;
a0d0e21e 1903 }
14dd3ad8 1904 JMPENV_POP;
a0d0e21e 1905 }
1e422769 1906
a0d0e21e 1907 if (flags & G_DISCARD) {
3280af22 1908 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1909 retval = 0;
1910 FREETMPS;
1911 LEAVE;
1912 }
533c011a 1913 PL_op = oldop;
a0d0e21e
LW		 1914 return retval;
1915}
1916
14dd3ad8 1917#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1918STATIC void *
14dd3ad8 1919S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1920{
1921 OP *myop = va_arg(args, OP*);
1922 int is_eval = va_arg(args, int);
1923
14dd3ad8 1924 call_body(myop, is_eval);
312caa8e
CS		 1925 return NULL;
1926}
14dd3ad8 1927#endif
312caa8e
CS		 1928
1929STATIC void
14dd3ad8 1930S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1931{
312caa8e
CS		 1932 if (PL_op == myop) {
1933 if (is_eval)
f807eda9 1934 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1935 else
f807eda9 1936 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1937 }
1938 if (PL_op)
cea2e8a9 1939 CALLRUNOPS(aTHX);
312caa8e
CS		 1940}
1941
6e72f9df 1942/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1943
954c1994
GS		 1944/*
1945=for apidoc p||eval_sv
1946
1947Tells Perl to C<eval> the string in the SV.
1948
1949=cut
1950*/
1951
a0d0e21e 1952I32
864dbfa3 1953Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1954
8ac85365 1955 /* See G_* flags in cop.h */
a0d0e21e 1956{
924508f0 1957 dSP;
a0d0e21e 1958 UNOP myop; /* fake syntax tree node */
8fa7f367 1959 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1960 volatile I32 retval = 0;
4633a7c4 1961 I32 oldscope;
6224f72b 1962 int ret;
533c011a 1963 OP* oldop = PL_op;
db36c5a1 1964 dJMPENV;
84902520 1965
4633a7c4
LW		 1966 if (flags & G_DISCARD) {
1967 ENTER;
1968 SAVETMPS;
1969 }
1970
462e5cf6 1971 SAVEOP();
533c011a
NIS		 1972 PL_op = (OP*)&myop;
1973 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1974 EXTEND(PL_stack_sp, 1);
1975 *++PL_stack_sp = sv;
1976 oldscope = PL_scopestack_ix;
79072805 1977
4633a7c4
LW		 1978 if (!(flags & G_NOARGS))
1979 myop.op_flags = OPf_STACKED;
79072805 1980 myop.op_next = Nullop;
6e72f9df 1981 myop.op_type = OP_ENTEREVAL;
54310121 1982 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1983 (flags & G_ARRAY) ? OPf_WANT_LIST :
1984 OPf_WANT_SCALAR);
6e72f9df 1985 if (flags & G_KEEPERR)
1986 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1987
14dd3ad8 1988#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1989 redo_body:
14dd3ad8 1990 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1991 (OP*)&myop, TRUE);
14dd3ad8
GS		 1992#else
1993 JMPENV_PUSH(ret);
1994#endif
6224f72b
GS		 1995 switch (ret) {
1996 case 0:
14dd3ad8
GS		 1997#ifndef PERL_FLEXIBLE_EXCEPTIONS
1998 redo_body:
1999 call_body((OP*)&myop,TRUE);
2000#endif
312caa8e
CS		 2001 retval = PL_stack_sp - (PL_stack_base + oldmark);
2002 if (!(flags & G_KEEPERR))
2003 sv_setpv(ERRSV,"");
4633a7c4 2004 break;
6224f72b 2005 case 1:
f86702cc 2006 STATUS_ALL_FAILURE;
4633a7c4 2007 /* FALL THROUGH */
6224f72b 2008 case 2:
4633a7c4 2009 /* my_exit() was called */
3280af22 2010 PL_curstash = PL_defstash;
4633a7c4 2011 FREETMPS;
14dd3ad8 2012 JMPENV_POP;
cc3604b1 2013 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2014 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2015 my_exit_jump();
4633a7c4 2016 /* NOTREACHED */
6224f72b 2017 case 3:
3280af22 2018 if (PL_restartop) {
533c011a 2019 PL_op = PL_restartop;
3280af22 2020 PL_restartop = 0;
312caa8e 2021 goto redo_body;
4633a7c4 2022 }
3280af22 2023 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2024 if (flags & G_ARRAY)
2025 retval = 0;
2026 else {
2027 retval = 1;
3280af22 2028 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2029 }
312caa8e 2030 break;
4633a7c4
LW		 2031 }
2032
14dd3ad8 2033 JMPENV_POP;
4633a7c4 2034 if (flags & G_DISCARD) {
3280af22 2035 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2036 retval = 0;
2037 FREETMPS;
2038 LEAVE;
2039 }
533c011a 2040 PL_op = oldop;
4633a7c4
LW		 2041 return retval;
2042}
2043
954c1994
GS		 2044/*
2045=for apidoc p||eval_pv
2046
2047Tells Perl to C<eval> the given string and return an SV* result.
2048
2049=cut
2050*/
2051
137443ea 2052SV*
864dbfa3 2053Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2054{
2055 dSP;
2056 SV* sv = newSVpv(p, 0);
2057
864dbfa3 2058 eval_sv(sv, G_SCALAR);
137443ea 2059 SvREFCNT_dec(sv);
2060
2061 SPAGAIN;
2062 sv = POPs;
2063 PUTBACK;
2064
2d8e6c8d
GS		 2065 if (croak_on_error && SvTRUE(ERRSV)) {
2066 STRLEN n_a;
cea2e8a9 2067 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2068 }
137443ea 2069
2070 return sv;
2071}
2072
4633a7c4
LW		 2073/* Require a module. */
2074
954c1994
GS		 2075/*
2076=for apidoc p||require_pv
2077
7d3fb230
BS		 2078Tells Perl to C<require> the file named by the string argument. It is
2079analogous to the Perl code C<eval "require '$file'">. It's even
2080implemented that way; consider using Perl_load_module instead.
954c1994 2081
7d3fb230 2082=cut */
954c1994 2083
4633a7c4 2084void
864dbfa3 2085Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2086{
d3acc0f7
JP		 2087 SV* sv;
2088 dSP;
e788e7d3 2089 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2090 PUTBACK;
2091 sv = sv_newmortal();
4633a7c4
LW		 2092 sv_setpv(sv, "require '");
2093 sv_catpv(sv, pv);
2094 sv_catpv(sv, "'");
864dbfa3 2095 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2096 SPAGAIN;
2097 POPSTACK;
79072805
LW		 2098}
2099
79072805 2100void
864dbfa3 2101Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2102{
2103 register GV *gv;
2104
155aba94 2105 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2106 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2107}
2108
76e3520e 2109STATIC void
cea2e8a9 2110S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2111{
ab821d7f 2112 /* This message really ought to be max 23 lines.
75c72d73 2113 * Removed -h because the user already knows that option. Others? */
fb73857a 2114
76e3520e 2115 static char *usage_msg[] = {
fb73857a 2116"-0[octal] specify record separator (\\0, if no argument)",
2117"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2118"-C enable native wide character system interfaces",
1950ee41 2119"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2120"-d[:debugger] run program under debugger",
2121"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2122"-e 'command' one line of program (several -e's allowed, omit programfile)",
2123"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2124"-i[extension] edit <> files in place (makes backup if extension supplied)",
2125"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2126"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2127"-[mM][-]module execute `use/no module...' before executing program",
2128"-n assume 'while (<>) { ... }' loop around program",
2129"-p assume loop like -n but print line also, like sed",
2130"-P run program through C preprocessor before compilation",
2131"-s enable rudimentary parsing for switches after programfile",
2132"-S look for programfile using PATH environment variable",
2133"-T enable tainting checks",
2134"-u dump core after parsing program",
fb73857a 2135"-U allow unsafe operations",
aac3bd0d
GS		 2136"-v print version, subversion (includes VERY IMPORTANT perl info)",
2137"-V[:variable] print configuration summary (or a single Config.pm variable)",
2138"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2139"-W enable all warnings",
2140"-X disable all warnings",
fb73857a 2141"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2142"\n",
2143NULL
2144};
76e3520e 2145 char **p = usage_msg;
fb73857a 2146
b0e47665
GS		 2147 PerlIO_printf(PerlIO_stdout(),
2148 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2149 name);
fb73857a 2150 while (*p)
b0e47665 2151 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2152}
2153
79072805
LW		 2154/* This routine handles any switches that can be given during run */
2155
2156char *
864dbfa3 2157Perl_moreswitches(pTHX_ char *s)
79072805 2158{
ba210ebe 2159 STRLEN numlen;
c07a80fd 2160 U32 rschar;
79072805
LW		 2161
2162 switch (*s) {
2163 case '0':
a863c7d1 2164 {
53305cf1
NC		 2165 I32 flags = 0;
2166 numlen = 4;
2167 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2168 SvREFCNT_dec(PL_rs);
c07a80fd 2169 if (rschar & ~((U8)~0))
8bfdd7d9 2170 PL_rs = &PL_sv_undef;
c07a80fd 2171 else if (!rschar && numlen >= 2)
8bfdd7d9 2172 PL_rs = newSVpvn("", 0);
c07a80fd 2173 else {
2174 char ch = rschar;
8bfdd7d9 2175 PL_rs = newSVpvn(&ch, 1);
79072805
LW		 2176 }
2177 return s + numlen;
a863c7d1 2178 }
46487f74
GS		 2179 case 'C':
2180 PL_widesyscalls = TRUE;
2181 s++;
2182 return s;
2304df62 2183 case 'F':
3280af22
NIS		 2184 PL_minus_F = TRUE;
2185 PL_splitstr = savepv(s + 1);
2304df62
AD		 2186 s += strlen(s);
2187 return s;
79072805 2188 case 'a':
3280af22 2189 PL_minus_a = TRUE;
79072805
LW		 2190 s++;
2191 return s;
2192 case 'c':
3280af22 2193 PL_minus_c = TRUE;
79072805
LW		 2194 s++;
2195 return s;
2196 case 'd':
bbce6d69 2197 forbid_setid("-d");
4633a7c4 2198 s++;
70c94a19
RR		 2199 /* The following permits -d:Mod to accepts arguments following an =
2200 in the fashion that -MSome::Mod does. */
2201 if (*s == ':' || *s == '=') {
2202 char *start;
2203 SV *sv;
2204 sv = newSVpv("use Devel::", 0);
2205 start = ++s;
2206 /* We now allow -d:Module=Foo,Bar */
2207 while(isALNUM(*s) || *s==':') ++s;
2208 if (*s != '=')
2209 sv_catpv(sv, start);
2210 else {
2211 sv_catpvn(sv, start, s-start);
2212 sv_catpv(sv, " split(/,/,q{");
2213 sv_catpv(sv, ++s);
2214 sv_catpv(sv, "})");
2215 }
4633a7c4 2216 s += strlen(s);
70c94a19 2217 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2218 }
ed094faf 2219 if (!PL_perldb) {
3280af22 2220 PL_perldb = PERLDB_ALL;
a0d0e21e 2221 init_debugger();
ed094faf 2222 }
79072805
LW		 2223 return s;
2224 case 'D':
0453d815 2225 {
79072805 2226#ifdef DEBUGGING
bbce6d69 2227 forbid_setid("-D");
79072805 2228 if (isALPHA(s[1])) {
04932ac8
DM		 2229 /* if adding extra options, remember to update DEBUG_MASK */
2230 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2231 char *d;
2232
93a17b20 2233 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2234 PL_debug |= 1 << (d - debopts);
79072805
LW		 2235 }
2236 else {
3280af22 2237 PL_debug = atoi(s+1);
79072805
LW		 2238 for (s++; isDIGIT(*s); s++) ;
2239 }
aea4f609 2240 PL_debug |= DEBUG_TOP_FLAG;
79072805 2241#else
0453d815
PM		 2242 if (ckWARN_d(WARN_DEBUGGING))
2243 Perl_warner(aTHX_ WARN_DEBUGGING,
2244 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2245 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2246#endif
2247 /*SUPPRESS 530*/
2248 return s;
0453d815 2249 }
4633a7c4 2250 case 'h':
ac27b0f5 2251 usage(PL_origargv[0]);
6ad3d225 2252 PerlProc_exit(0);
79072805 2253 case 'i':
3280af22
NIS		 2254 if (PL_inplace)
2255 Safefree(PL_inplace);
2256 PL_inplace = savepv(s+1);
79072805 2257 /*SUPPRESS 530*/
3280af22 2258 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2259 if (*s) {
fb73857a 2260 *s++ = '\0';
7b8d334a
GS		 2261 if (*s == '-') /* Additional switches on #! line. */
2262 s++;
2263 }
fb73857a 2264 return s;
2265 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2266 forbid_setid("-I");
fb73857a 2267 ++s;
2268 while (*s && isSPACE(*s))
2269 ++s;
2270 if (*s) {
774d564b 2271 char *e, *p;
0df16ed7
GS		 2272 p = s;
2273 /* ignore trailing spaces (possibly followed by other switches) */
2274 do {
2275 for (e = p; *e && !isSPACE(*e); e++) ;
2276 p = e;
2277 while (isSPACE(*p))
2278 p++;
2279 } while (*p && *p != '-');
2280 e = savepvn(s, e-s);
9c8a64f0 2281 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2282 Safefree(e);
2283 s = p;
2284 if (*s == '-')
2285 s++;
79072805
LW		 2286 }
2287 else
a67e862a 2288 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2289 return s;
79072805 2290 case 'l':
3280af22 2291 PL_minus_l = TRUE;
79072805 2292 s++;
7889fe52
NIS		 2293 if (PL_ors_sv) {
2294 SvREFCNT_dec(PL_ors_sv);
2295 PL_ors_sv = Nullsv;
2296 }
79072805 2297 if (isDIGIT(*s)) {
53305cf1 2298 I32 flags = 0;
7889fe52 2299 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2300 numlen = 3 + (*s == '0');
2301 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2302 s += numlen;
2303 }
2304 else {
8bfdd7d9 2305 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2306 PL_ors_sv = newSVpvn("\n\n",2);
2307 }
2308 else {
8bfdd7d9 2309 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2310 }
79072805
LW		 2311 }
2312 return s;
1a30305b 2313 case 'M':
bbce6d69 2314 forbid_setid("-M"); /* XXX ? */
1a30305b 2315 /* FALL THROUGH */
2316 case 'm':
bbce6d69 2317 forbid_setid("-m"); /* XXX ? */
1a30305b 2318 if (*++s) {
a5f75d66 2319 char *start;
11343788 2320 SV *sv;
a5f75d66
AD		 2321 char *use = "use ";
2322 /* -M-foo == 'no foo' */
2323 if (*s == '-') { use = "no "; ++s; }
11343788 2324 sv = newSVpv(use,0);
a5f75d66 2325 start = s;
1a30305b 2326 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2327 while(isALNUM(*s) || *s==':') ++s;
2328 if (*s != '=') {
11343788 2329 sv_catpv(sv, start);
c07a80fd 2330 if (*(start-1) == 'm') {
2331 if (*s != '\0')
cea2e8a9 2332 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2333 sv_catpv( sv, " ()");
c07a80fd 2334 }
2335 } else {
6df41af2 2336 if (s == start)
be98fb35
GS		 2337 Perl_croak(aTHX_ "Module name required with -%c option",
2338 s[-1]);
11343788
MB		 2339 sv_catpvn(sv, start, s-start);
2340 sv_catpv(sv, " split(/,/,q{");
2341 sv_catpv(sv, ++s);
2342 sv_catpv(sv, "})");
c07a80fd 2343 }
1a30305b 2344 s += strlen(s);
5c831c24 2345 if (!PL_preambleav)
3280af22
NIS		 2346 PL_preambleav = newAV();
2347 av_push(PL_preambleav, sv);
1a30305b 2348 }
2349 else
cea2e8a9 2350 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2351 return s;
79072805 2352 case 'n':
3280af22 2353 PL_minus_n = TRUE;
79072805
LW		 2354 s++;
2355 return s;
2356 case 'p':
3280af22 2357 PL_minus_p = TRUE;
79072805
LW		 2358 s++;
2359 return s;
2360 case 's':
bbce6d69 2361 forbid_setid("-s");
3280af22 2362 PL_doswitches = TRUE;
79072805
LW		 2363 s++;
2364 return s;
463ee0b2 2365 case 'T':
3280af22 2366 if (!PL_tainting)
cea2e8a9 2367 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2368 s++;
2369 return s;
79072805 2370 case 'u':
bf4acbe4
GS		 2371#ifdef MACOS_TRADITIONAL
2372 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2373#endif
3280af22 2374 PL_do_undump = TRUE;
79072805
LW		 2375 s++;
2376 return s;
2377 case 'U':
3280af22 2378 PL_unsafe = TRUE;
79072805
LW		 2379 s++;
2380 return s;
2381 case 'v':
8e9464f1 2382#if !defined(DGUX)
b0e47665 2383 PerlIO_printf(PerlIO_stdout(),
d2560b70 2384 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2385 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2386#else /* DGUX */
2387/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2388 PerlIO_printf(PerlIO_stdout(),
2389 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2390 PerlIO_printf(PerlIO_stdout(),
2391 Perl_form(aTHX_ " built under %s at %s %s\n",
2392 OSNAME, __DATE__, __TIME__));
2393 PerlIO_printf(PerlIO_stdout(),
2394 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2395 OSVERS));
8e9464f1
JH		 2396#endif /* !DGUX */
2397
fb73857a 2398#if defined(LOCAL_PATCH_COUNT)
2399 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2400 PerlIO_printf(PerlIO_stdout(),
2401 "\n(with %d registered patch%s, "
2402 "see perl -V for more detail)",
2403 (int)LOCAL_PATCH_COUNT,
2404 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2405#endif
1a30305b 2406
b0e47665 2407 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2408 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2409#ifdef MACOS_TRADITIONAL
2410 PerlIO_printf(PerlIO_stdout(),
084592ab 2411 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2412#endif
79072805 2413#ifdef MSDOS
b0e47665
GS		 2414 PerlIO_printf(PerlIO_stdout(),
2415 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2416#endif
2417#ifdef DJGPP
b0e47665
GS		 2418 PerlIO_printf(PerlIO_stdout(),
2419 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2420 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2421#endif
79072805 2422#ifdef OS2
b0e47665
GS		 2423 PerlIO_printf(PerlIO_stdout(),
2424 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2425 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2426#endif
79072805 2427#ifdef atarist
b0e47665
GS		 2428 PerlIO_printf(PerlIO_stdout(),
2429 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2430#endif
a3f9223b 2431#ifdef __BEOS__
b0e47665
GS		 2432 PerlIO_printf(PerlIO_stdout(),
2433 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2434#endif
1d84e8df 2435#ifdef MPE
b0e47665 2436 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2437 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2438#endif
9d116dd7 2439#ifdef OEMVS
b0e47665
GS		 2440 PerlIO_printf(PerlIO_stdout(),
2441 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2442#endif
495c5fdc 2443#ifdef __VOS__
b0e47665
GS		 2444 PerlIO_printf(PerlIO_stdout(),
2445 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2446#endif
092bebab 2447#ifdef __OPEN_VM
b0e47665
GS		 2448 PerlIO_printf(PerlIO_stdout(),
2449 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2450#endif
a1a0e61e 2451#ifdef POSIX_BC
b0e47665
GS		 2452 PerlIO_printf(PerlIO_stdout(),
2453 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2454#endif
61ae2fbf 2455#ifdef __MINT__
b0e47665
GS		 2456 PerlIO_printf(PerlIO_stdout(),
2457 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2458#endif
f83d2536 2459#ifdef EPOC
b0e47665
GS		 2460 PerlIO_printf(PerlIO_stdout(),
2461 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2462#endif
e1caacb4
JH		 2463#ifdef UNDER_CE
2464 printf("WINCE port by Rainer Keuchel, 2001\n");
2465 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2466 wce_hitreturn();
2467#endif
baed7233
DL		 2468#ifdef BINARY_BUILD_NOTICE
2469 BINARY_BUILD_NOTICE;
2470#endif
b0e47665
GS		 2471 PerlIO_printf(PerlIO_stdout(),
2472 "\n\
79072805 2473Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2474GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2475Complete documentation for Perl, including FAQ lists, should be found on\n\
2476this system using `man perl' or `perldoc perl'. If you have access to the\n\
2477Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2478 PerlProc_exit(0);
79072805 2479 case 'w':
599cee73 2480 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2481 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2482 s++;
2483 return s;
2484 case 'W':
ac27b0f5 2485 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2486 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2487 s++;
2488 return s;
2489 case 'X':
ac27b0f5 2490 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2491 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2492 s++;
2493 return s;
a0d0e21e 2494 case '*':
79072805
LW		 2495 case ' ':
2496 if (s[1] == '-') /* Additional switches on #! line. */
2497 return s+2;
2498 break;
a0d0e21e 2499 case '-':
79072805 2500 case 0:
51882d45 2501#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2502 case '\r':
2503#endif
79072805
LW		 2504 case '\n':
2505 case '\t':
2506 break;
aa689395 2507#ifdef ALTERNATE_SHEBANG
2508 case 'S': /* OS/2 needs -S on "extproc" line. */
2509 break;
2510#endif
a0d0e21e 2511 case 'P':
3280af22 2512 if (PL_preprocess)
a0d0e21e
LW		 2513 return s+1;
2514 /* FALL THROUGH */
79072805 2515 default:
cea2e8a9 2516 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2517 }
2518 return Nullch;
2519}
2520
2521/* compliments of Tom Christiansen */
2522
2523/* unexec() can be found in the Gnu emacs distribution */
ee580363 2524/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2525
2526void
864dbfa3 2527Perl_my_unexec(pTHX)
79072805
LW		 2528{
2529#ifdef UNEXEC
46fc3d4c 2530 SV* prog;
2531 SV* file;
ee580363 2532 int status = 1;
79072805
LW		 2533 extern int etext;
2534
ee580363 2535 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2536 sv_catpv(prog, "/perl");
6b88bc9c 2537 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2538 sv_catpv(file, ".perldump");
79072805 2539
ee580363
GS		 2540 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2541 /* unexec prints msg to stderr in case of failure */
6ad3d225 2542 PerlProc_exit(status);
79072805 2543#else
a5f75d66
AD		 2544# ifdef VMS
2545# include <lib$routines.h>
2546 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2547# else
79072805 2548 ABORT(); /* for use with undump */
aa689395 2549# endif
a5f75d66 2550#endif
79072805
LW		 2551}
2552
cb68f92d
GS		 2553/* initialize curinterp */
2554STATIC void
cea2e8a9 2555S_init_interp(pTHX)
cb68f92d
GS		 2556{
2557
acfe0abc
GS		 2558#ifdef MULTIPLICITY
2559# define PERLVAR(var,type)
2560# define PERLVARA(var,n,type)
2561# if defined(PERL_IMPLICIT_CONTEXT)
2562# if defined(USE_5005THREADS)
2563# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2564# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2565# else /* !USE_5005THREADS */
2566# define PERLVARI(var,type,init) aTHX->var = init;
2567# define PERLVARIC(var,type,init) aTHX->var = init;
2568# endif /* USE_5005THREADS */
3967c732 2569# else
acfe0abc
GS		 2570# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2571# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2572# endif
acfe0abc
GS		 2573# include "intrpvar.h"
2574# ifndef USE_5005THREADS
2575# include "thrdvar.h"
2576# endif
2577# undef PERLVAR
2578# undef PERLVARA
2579# undef PERLVARI
2580# undef PERLVARIC
2581#else
2582# define PERLVAR(var,type)
2583# define PERLVARA(var,n,type)
2584# define PERLVARI(var,type,init) PL_##var = init;
2585# define PERLVARIC(var,type,init) PL_##var = init;
2586# include "intrpvar.h"
2587# ifndef USE_5005THREADS
2588# include "thrdvar.h"
2589# endif
2590# undef PERLVAR
2591# undef PERLVARA
2592# undef PERLVARI
2593# undef PERLVARIC
cb68f92d
GS		 2594#endif
2595
cb68f92d
GS		 2596}
2597
76e3520e 2598STATIC void
cea2e8a9 2599S_init_main_stash(pTHX)
79072805 2600{
463ee0b2 2601 GV *gv;
6e72f9df 2602
3d47000e 2603
ac27b0f5 2604
3280af22 2605 PL_curstash = PL_defstash = newHV();
79cb57f6 2606 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2607 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2608 SvREFCNT_dec(GvHV(gv));
3280af22 2609 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2610 SvREADONLY_on(gv);
3280af22
NIS		 2611 HvNAME(PL_defstash) = savepv("main");
2612 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2613 GvMULTI_on(PL_incgv);
2614 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2615 GvMULTI_on(PL_hintgv);
2616 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2617 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2618 GvMULTI_on(PL_errgv);
2619 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2620 GvMULTI_on(PL_replgv);
cea2e8a9 2621 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2622 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2623 sv_setpvn(ERRSV, "", 0);
3280af22 2624 PL_curstash = PL_defstash;
11faa288 2625 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2626 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2627 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2628 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2629 /* We must init $/ before switches are processed. */
864dbfa3 2630 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2631}
2632
76e3520e 2633STATIC void
cea2e8a9 2634S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2635{
6c4ab083 2636 *fdscript = -1;
79072805 2637
3280af22
NIS		 2638 if (PL_e_script) {
2639 PL_origfilename = savepv("-e");
96436eeb 2640 }
6c4ab083
GS		 2641 else {
2642 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2643 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2644
2645 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2646 char *s = scriptname + 8;
2647 *fdscript = atoi(s);
2648 while (isDIGIT(*s))
2649 s++;
2650 if (*s) {
2651 scriptname = savepv(s + 1);
3280af22
NIS		 2652 Safefree(PL_origfilename);
2653 PL_origfilename = scriptname;
6c4ab083
GS		 2654 }
2655 }
2656 }
2657
f4dd75d9
GS		 2658#ifdef USE_ITHREADS
2659 Safefree(CopFILE(PL_curcop));
2660#else
2661 SvREFCNT_dec(CopFILEGV(PL_curcop));
2662#endif
57843af0 2663 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2664 if (strEQ(PL_origfilename,"-"))
79072805 2665 scriptname = "";
01f988be 2666 if (*fdscript >= 0) {
3280af22 2667 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2668#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2669 if (PL_rsfp)
2670 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2671#endif
2672 }
3280af22 2673 else if (PL_preprocess) {
46fc3d4c 2674 char *cpp_cfg = CPPSTDIN;
79cb57f6 2675 SV *cpp = newSVpvn("",0);
46fc3d4c 2676 SV *cmd = NEWSV(0,0);
2677
2678 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2679 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2680 sv_catpv(cpp, cpp_cfg);
79072805 2681
0df16ed7 2682 sv_catpvn(sv, "-I", 2);
fed7345c 2683 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2684
14953ddc
MB		 2685 DEBUG_P(PerlIO_printf(Perl_debug_log,
2686 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2687 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2688#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2689 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2690sed %s -e \"/^[^#]/b\" \
2691 -e \"/^#[ ]*include[ ]/b\" \
2692 -e \"/^#[ ]*define[ ]/b\" \
2693 -e \"/^#[ ]*if[ ]/b\" \
2694 -e \"/^#[ ]*ifdef[ ]/b\" \
2695 -e \"/^#[ ]*ifndef[ ]/b\" \
2696 -e \"/^#[ ]*else/b\" \
2697 -e \"/^#[ ]*elif[ ]/b\" \
2698 -e \"/^#[ ]*undef[ ]/b\" \
2699 -e \"/^#[ ]*endif/b\" \
2700 -e \"s/^#.*//\" \
894356b3 2701 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2702 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2703#else
092bebab 2704# ifdef __OPEN_VM
cea2e8a9 2705 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2706%s %s -e '/^[^#]/b' \
2707 -e '/^#[ ]*include[ ]/b' \
2708 -e '/^#[ ]*define[ ]/b' \
2709 -e '/^#[ ]*if[ ]/b' \
2710 -e '/^#[ ]*ifdef[ ]/b' \
2711 -e '/^#[ ]*ifndef[ ]/b' \
2712 -e '/^#[ ]*else/b' \
2713 -e '/^#[ ]*elif[ ]/b' \
2714 -e '/^#[ ]*undef[ ]/b' \
2715 -e '/^#[ ]*endif/b' \
2716 -e 's/^[ ]*#.*//' \
894356b3 2717 %s | %"SVf" %"SVf" %s",
092bebab 2718# else
cea2e8a9 2719 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2720%s %s -e '/^[^#]/b' \
2721 -e '/^#[ ]*include[ ]/b' \
2722 -e '/^#[ ]*define[ ]/b' \
2723 -e '/^#[ ]*if[ ]/b' \
2724 -e '/^#[ ]*ifdef[ ]/b' \
2725 -e '/^#[ ]*ifndef[ ]/b' \
2726 -e '/^#[ ]*else/b' \
2727 -e '/^#[ ]*elif[ ]/b' \
2728 -e '/^#[ ]*undef[ ]/b' \
2729 -e '/^#[ ]*endif/b' \
2730 -e 's/^[ ]*#.*//' \
894356b3 2731 %s | %"SVf" -C %"SVf" %s",
092bebab 2732# endif
79072805
LW		 2733#ifdef LOC_SED
2734 LOC_SED,
2735#else
2736 "sed",
2737#endif
3280af22 2738 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2739#endif
46fc3d4c 2740 scriptname, cpp, sv, CPPMINUS);
3280af22 2741 PL_doextract = FALSE;
79072805 2742#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2743 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2744#ifdef HAS_SETEUID
b28d0864 2745 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2746#else
2747#ifdef HAS_SETREUID
b28d0864 2748 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2749#else
2750#ifdef HAS_SETRESUID
b28d0864 2751 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2752#else
b28d0864 2753 PerlProc_setuid(PL_uid);
79072805
LW		 2754#endif
2755#endif
85e6fe83 2756#endif
b28d0864 2757 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2758 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2759 }
2760#endif /* IAMSUID */
3280af22 2761 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2762 SvREFCNT_dec(cmd);
2763 SvREFCNT_dec(cpp);
79072805
LW		 2764 }
2765 else if (!*scriptname) {
bbce6d69 2766 forbid_setid("program input from stdin");
3280af22 2767 PL_rsfp = PerlIO_stdin();
79072805 2768 }
96436eeb 2769 else {
3280af22 2770 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2771#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2772 if (PL_rsfp)
2773 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2774#endif
2775 }
3280af22 2776 if (!PL_rsfp) {
13281fa4 2777#ifdef DOSUID
a687059c 2778#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2779 if (PL_euid &&
cc49e20b 2780 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2781 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2782 {
46fc3d4c 2783 /* try again */
a7cb1f99 2784 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2785 (int)PERL_REVISION, (int)PERL_VERSION,
2786 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2787 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2788 }
2789#endif
2790#endif
584d69ec
JH		 2791#ifdef IAMSUID
2792 errno = EPERM;
2793 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2794 Strerror(errno));
2795#else
cea2e8a9 2796 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2797 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2798#endif
13281fa4 2799 }
79072805 2800}
8d063cd8 2801
7b89560d
JH		 2802/* Mention
2803 * I_SYSSTATVFS HAS_FSTATVFS
2804 * I_SYSMOUNT
c890dc6c 2805 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2806 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2807 * here so that metaconfig picks them up. */
2808
104d25b7 2809#ifdef IAMSUID
864dbfa3 2810STATIC int
e688b231 2811S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2812{
0545a864
JH		 2813 int check_okay = 0; /* able to do all the required sys/libcalls */
2814 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2815/*
ad27e871 2816 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2817 * fstatvfs() is UNIX98.
0545a864 2818 * fstatfs() is 4.3 BSD.
ad27e871 2819 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2820 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2821 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2822 */
2823
6439433f
JH		 2824#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2825
2826# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2827 defined(HAS_FSTATVFS)
2828# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2829 struct statvfs stfs;
6439433f 2830
104d25b7
JH		 2831 check_okay = fstatvfs(fd, &stfs) == 0;
2832 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2833# endif /* fstatvfs */
ac27b0f5 2834
6439433f
JH		 2835# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2836 defined(PERL_MOUNT_NOSUID) && \
2837 defined(HAS_FSTATFS) && \
2838 defined(HAS_STRUCT_STATFS) && \
2839 defined(HAS_STRUCT_STATFS_F_FLAGS)
2840# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2841 struct statfs stfs;
6439433f 2842
104d25b7 2843 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2844 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2845# endif /* fstatfs */
2846
2847# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2848 defined(PERL_MOUNT_NOSUID) && \
2849 defined(HAS_FSTAT) && \
2850 defined(HAS_USTAT) && \
2851 defined(HAS_GETMNT) && \
2852 defined(HAS_STRUCT_FS_DATA) && \
2853 defined(NOSTAT_ONE)
2854# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2855 struct stat fdst;
6439433f 2856
0545a864 2857 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2858 struct ustat us;
2859 if (ustat(fdst.st_dev, &us) == 0) {
2860 struct fs_data fsd;
2861 /* NOSTAT_ONE here because we're not examining fields which
2862 * vary between that case and STAT_ONE. */
ad27e871 2863 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2864 size_t cmplen = sizeof(us.f_fname);
2865 if (sizeof(fsd.fd_req.path) < cmplen)
2866 cmplen = sizeof(fsd.fd_req.path);
2867 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2868 fdst.st_dev == fsd.fd_req.dev) {
2869 check_okay = 1;
2870 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2871 }
2872 }
2873 }
2874 }
0545a864 2875 }
6439433f
JH		 2876# endif /* fstat+ustat+getmnt */
2877
2878# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2879 defined(HAS_GETMNTENT) && \
2880 defined(HAS_HASMNTOPT) && \
2881 defined(MNTOPT_NOSUID)
2882# define FD_ON_NOSUID_CHECK_OKAY
2883 FILE *mtab = fopen("/etc/mtab", "r");
2884 struct mntent *entry;
2885 struct stat stb, fsb;
104d25b7
JH		 2886
2887 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2888 while (entry = getmntent(mtab)) {
2889 if (stat(entry->mnt_dir, &fsb) == 0
2890 && fsb.st_dev == stb.st_dev)
2891 {
2892 /* found the filesystem */
2893 check_okay = 1;
2894 if (hasmntopt(entry, MNTOPT_NOSUID))
2895 on_nosuid = 1;
2896 break;
2897 } /* A single fs may well fail its stat(). */
2898 }
104d25b7
JH		 2899 }
2900 if (mtab)
6439433f
JH		 2901 fclose(mtab);
2902# endif /* getmntent+hasmntopt */
0545a864 2903
ac27b0f5 2904 if (!check_okay)
0545a864 2905 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2906 return on_nosuid;
2907}
2908#endif /* IAMSUID */
2909
76e3520e 2910STATIC void
cea2e8a9 2911S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2912{
155aba94 2913#ifdef IAMSUID
96436eeb 2914 int which;
155aba94 2915#endif
96436eeb 2916
13281fa4
LW		 2917 /* do we need to emulate setuid on scripts? */
2918
2919 /* This code is for those BSD systems that have setuid #! scripts disabled
2920 * in the kernel because of a security problem. Merely defining DOSUID
2921 * in perl will not fix that problem, but if you have disabled setuid
2922 * scripts in the kernel, this will attempt to emulate setuid and setgid
2923 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2924 * root version must be called suidperl or sperlN.NNN. If regular perl
2925 * discovers that it has opened a setuid script, it calls suidperl with
2926 * the same argv that it had. If suidperl finds that the script it has
2927 * just opened is NOT setuid root, it sets the effective uid back to the
2928 * uid. We don't just make perl setuid root because that loses the
2929 * effective uid we had before invoking perl, if it was different from the
2930 * uid.
13281fa4
LW		 2931 *
2932 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2933 * be defined in suidperl only. suidperl must be setuid root. The
2934 * Configure script will set this up for you if you want it.
2935 */
a687059c 2936
13281fa4 2937#ifdef DOSUID
6e72f9df 2938 char *s, *s2;
a0d0e21e 2939
b28d0864 2940 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2941 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2942 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2943 I32 len;
2d8e6c8d 2944 STRLEN n_a;
13281fa4 2945
a687059c 2946#ifdef IAMSUID
fe14fcc3 2947#ifndef HAS_SETREUID
a687059c
LW		 2948 /* On this access check to make sure the directories are readable,
2949 * there is actually a small window that the user could use to make
2950 * filename point to an accessible directory. So there is a faint
2951 * chance that someone could execute a setuid script down in a
2952 * non-accessible directory. I don't know what to do about that.
2953 * But I don't think it's too important. The manual lies when
2954 * it says access() is useful in setuid programs.
2955 */
cc49e20b 2956 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2957 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2958#else
2959 /* If we can swap euid and uid, then we can determine access rights
2960 * with a simple stat of the file, and then compare device and
2961 * inode to make sure we did stat() on the same file we opened.
2962 * Then we just have to make sure he or she can execute it.
2963 */
2964 {
2965 struct stat tmpstatbuf;
2966
85e6fe83
LW		 2967 if (
2968#ifdef HAS_SETREUID
b28d0864 2969 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2970#else
2971# if HAS_SETRESUID
b28d0864 2972 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2973# endif
85e6fe83 2974#endif
b28d0864 2975 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2976 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2977 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2978 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2979#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2980 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2981 Perl_croak(aTHX_ "Permission denied");
104d25b7 2982#endif
b28d0864
NIS		 2983 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2984 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2985 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2986 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2987 }
85e6fe83
LW		 2988 if (
2989#ifdef HAS_SETREUID
b28d0864 2990 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2991#else
2992# if defined(HAS_SETRESUID)
b28d0864 2993 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2994# endif
85e6fe83 2995#endif
b28d0864 2996 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2997 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2998 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2999 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3000 }
fe14fcc3 3001#endif /* HAS_SETREUID */
a687059c
LW		 3002#endif /* IAMSUID */
3003
b28d0864 3004 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3005 Perl_croak(aTHX_ "Permission denied");
b28d0864 3006 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3007 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3008 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3009 CopLINE_inc(PL_curcop);
6b88bc9c 3010 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3011 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3012 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3013 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3014 if (*s == ' ') s++;
45d8adaa 3015 while (!isSPACE(*s)) s++;
2d8e6c8d 3016 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3017 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3018 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3019 Perl_croak(aTHX_ "Not a perl script");
a687059c 3020 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3021 /*
3022 * #! arg must be what we saw above. They can invoke it by
3023 * mentioning suidperl explicitly, but they may not add any strange
3024 * arguments beyond what #! says if they do invoke suidperl that way.
3025 */
3026 len = strlen(validarg);
3027 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3028 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3029 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3030
3031#ifndef IAMSUID
b28d0864
NIS		 3032 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3033 PL_euid == PL_statbuf.st_uid)
3034 if (!PL_do_undump)
cea2e8a9 3035 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3036FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3037#endif /* IAMSUID */
13281fa4 3038
b28d0864
NIS		 3039 if (PL_euid) { /* oops, we're not the setuid root perl */
3040 (void)PerlIO_close(PL_rsfp);
13281fa4 3041#ifndef IAMSUID
46fc3d4c 3042 /* try again */
a7cb1f99 3043 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3044 (int)PERL_REVISION, (int)PERL_VERSION,
3045 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3046#endif
cea2e8a9 3047 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3048 }
3049
b28d0864 3050 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3051#ifdef HAS_SETEGID
b28d0864 3052 (void)setegid(PL_statbuf.st_gid);
a687059c 3053#else
fe14fcc3 3054#ifdef HAS_SETREGID
b28d0864 3055 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3056#else
3057#ifdef HAS_SETRESGID
b28d0864 3058 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3059#else
b28d0864 3060 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3061#endif
3062#endif
85e6fe83 3063#endif
b28d0864 3064 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3065 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3066 }
b28d0864
NIS		 3067 if (PL_statbuf.st_mode & S_ISUID) {
3068 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3069#ifdef HAS_SETEUID
b28d0864 3070 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3071#else
fe14fcc3 3072#ifdef HAS_SETREUID
b28d0864 3073 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3074#else
3075#ifdef HAS_SETRESUID
b28d0864 3076 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3077#else
b28d0864 3078 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3079#endif
3080#endif
85e6fe83 3081#endif
b28d0864 3082 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3083 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3084 }
b28d0864 3085 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3086#ifdef HAS_SETEUID
b28d0864 3087 (void)seteuid((Uid_t)PL_uid);
a687059c 3088#else
fe14fcc3 3089#ifdef HAS_SETREUID
b28d0864 3090 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3091#else
85e6fe83 3092#ifdef HAS_SETRESUID
b28d0864 3093 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3094#else
b28d0864 3095 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3096#endif
a687059c
LW		 3097#endif
3098#endif
b28d0864 3099 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3100 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3101 }
748a9306 3102 init_ids();
b28d0864 3103 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3104 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3105 }
3106#ifdef IAMSUID
6b88bc9c 3107 else if (PL_preprocess)
cea2e8a9 3108 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3109 else if (fdscript >= 0)
cea2e8a9 3110 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3111 else
cea2e8a9 3112 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3113
3114 /* We absolutely must clear out any saved ids here, so we */
3115 /* exec the real perl, substituting fd script for scriptname. */
3116 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3117 PerlIO_rewind(PL_rsfp);
3118 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3119 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3120 if (!PL_origargv[which])
cea2e8a9
GS		 3121 Perl_croak(aTHX_ "Permission denied");
3122 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3123 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3124#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3125 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3126#endif
a7cb1f99 3127 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3128 (int)PERL_REVISION, (int)PERL_VERSION,
3129 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3130 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3131#endif /* IAMSUID */
a687059c 3132#else /* !DOSUID */
3280af22 3133 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3134#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3135 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3136 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3137 ||
b28d0864 3138 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3139 )
b28d0864 3140 if (!PL_do_undump)
cea2e8a9 3141 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3142FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3143#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3144 /* not set-id, must be wrapped */
a687059c 3145 }
13281fa4 3146#endif /* DOSUID */
79072805 3147}
13281fa4 3148
76e3520e 3149STATIC void
cea2e8a9 3150S_find_beginning(pTHX)
79072805 3151{
6e72f9df 3152 register char *s, *s2;
33b78306
LW		 3153
3154 /* skip forward in input to the real script? */
3155
bbce6d69 3156 forbid_setid("-x");
bf4acbe4 3157#ifdef MACOS_TRADITIONAL
084592ab 3158 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3159
bf4acbe4
GS		 3160 while (PL_doextract || gMacPerl_AlwaysExtract) {
3161 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3162 if (!gMacPerl_AlwaysExtract)
3163 Perl_croak(aTHX_ "No Perl script found in input\n");
3164
3165 if (PL_doextract) /* require explicit override ? */
3166 if (!OverrideExtract(PL_origfilename))
3167 Perl_croak(aTHX_ "User aborted script\n");
3168 else
3169 PL_doextract = FALSE;
3170
3171 /* Pater peccavi, file does not have #! */
3172 PerlIO_rewind(PL_rsfp);
ac27b0f5 3173
bf4acbe4
GS		 3174 break;
3175 }
3176#else
3280af22
NIS		 3177 while (PL_doextract) {
3178 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3179 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3180#endif
4f0c37ba
IZ		 3181 s2 = s;
3182 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3183 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3184 PL_doextract = FALSE;
6e72f9df 3185 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3186 s2 = s;
3187 while (*s == ' ' || *s == '\t') s++;
3188 if (*s++ == '-') {
3189 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3190 if (strnEQ(s2-4,"perl",4))
3191 /*SUPPRESS 530*/
155aba94
GS		 3192 while ((s = moreswitches(s)))
3193 ;
33b78306 3194 }
95e8664e
CN		 3195#ifdef MACOS_TRADITIONAL
3196 break;
3197#endif
83025b21
LW		 3198 }
3199 }
3200}
3201
afe37c7d 3202
76e3520e 3203STATIC void
cea2e8a9 3204S_init_ids(pTHX)
352d5a3a 3205{
d8eceb89
JH		 3206 PL_uid = PerlProc_getuid();
3207 PL_euid = PerlProc_geteuid();
3208 PL_gid = PerlProc_getgid();
3209 PL_egid = PerlProc_getegid();
748a9306 3210#ifdef VMS
b28d0864
NIS		 3211 PL_uid |= PL_gid << 16;
3212 PL_euid |= PL_egid << 16;
748a9306 3213#endif
3280af22 3214 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3215}
79072805 3216
76e3520e 3217STATIC void
cea2e8a9 3218S_forbid_setid(pTHX_ char *s)
bbce6d69 3219{
3280af22 3220 if (PL_euid != PL_uid)
cea2e8a9 3221 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3222 if (PL_egid != PL_gid)
cea2e8a9 3223 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3224}
3225
1ee4443e
IZ		 3226void
3227Perl_init_debugger(pTHX)
748a9306 3228{
1ee4443e
IZ		 3229 HV *ostash = PL_curstash;
3230
3280af22
NIS		 3231 PL_curstash = PL_debstash;
3232 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3233 AvREAL_off(PL_dbargs);
3234 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3235 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3236 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3237 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3238 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3239 sv_setiv(PL_DBsingle, 0);
3280af22 3240 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3241 sv_setiv(PL_DBtrace, 0);
3280af22 3242 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3243 sv_setiv(PL_DBsignal, 0);
1ee4443e 3244 PL_curstash = ostash;
352d5a3a
LW		 3245}
3246
2ce36478
SM		 3247#ifndef STRESS_REALLOC
3248#define REASONABLE(size) (size)
3249#else
3250#define REASONABLE(size) (1) /* unreasonable */
3251#endif
3252
11343788 3253void
cea2e8a9 3254Perl_init_stacks(pTHX)
79072805 3255{
e336de0d 3256 /* start with 128-item stack and 8K cxstack */
3280af22 3257 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3258 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3259 PL_curstackinfo->si_type = PERLSI_MAIN;
3260 PL_curstack = PL_curstackinfo->si_stack;
3261 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3262
3280af22
NIS		 3263 PL_stack_base = AvARRAY(PL_curstack);
3264 PL_stack_sp = PL_stack_base;
3265 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3266
3280af22
NIS		 3267 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3268 PL_tmps_floor = -1;
3269 PL_tmps_ix = -1;
3270 PL_tmps_max = REASONABLE(128);
8990e307 3271
3280af22
NIS		 3272 New(54,PL_markstack,REASONABLE(32),I32);
3273 PL_markstack_ptr = PL_markstack;
3274 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3275
ce2f7c3b 3276 SET_MARK_OFFSET;
e336de0d 3277
3280af22
NIS		 3278 New(54,PL_scopestack,REASONABLE(32),I32);
3279 PL_scopestack_ix = 0;
3280 PL_scopestack_max = REASONABLE(32);
79072805 3281
3280af22
NIS		 3282 New(54,PL_savestack,REASONABLE(128),ANY);
3283 PL_savestack_ix = 0;
3284 PL_savestack_max = REASONABLE(128);
79072805 3285
3280af22
NIS		 3286 New(54,PL_retstack,REASONABLE(16),OP*);
3287 PL_retstack_ix = 0;
3288 PL_retstack_max = REASONABLE(16);
378cc40b 3289}
33b78306 3290
2ce36478
SM		 3291#undef REASONABLE
3292
76e3520e 3293STATIC void
cea2e8a9 3294S_nuke_stacks(pTHX)
6e72f9df 3295{
3280af22
NIS		 3296 while (PL_curstackinfo->si_next)
3297 PL_curstackinfo = PL_curstackinfo->si_next;
3298 while (PL_curstackinfo) {
3299 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3300 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3301 Safefree(PL_curstackinfo->si_cxstack);
3302 Safefree(PL_curstackinfo);
3303 PL_curstackinfo = p;
e336de0d 3304 }
3280af22
NIS		 3305 Safefree(PL_tmps_stack);
3306 Safefree(PL_markstack);
3307 Safefree(PL_scopestack);
3308 Safefree(PL_savestack);
3309 Safefree(PL_retstack);
378cc40b 3310}
33b78306 3311
76e3520e 3312STATIC void
cea2e8a9 3313S_init_lexer(pTHX)
8990e307 3314{
06039172 3315 PerlIO *tmpfp;
3280af22
NIS		 3316 tmpfp = PL_rsfp;
3317 PL_rsfp = Nullfp;
3318 lex_start(PL_linestr);
3319 PL_rsfp = tmpfp;
79cb57f6 3320 PL_subname = newSVpvn("main",4);
8990e307
LW		 3321}
3322
76e3520e 3323STATIC void
cea2e8a9 3324S_init_predump_symbols(pTHX)
45d8adaa 3325{
93a17b20 3326 GV *tmpgv;
af8c498a 3327 IO *io;
79072805 3328
864dbfa3 3329 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3330 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3331 GvMULTI_on(PL_stdingv);
af8c498a 3332 io = GvIOp(PL_stdingv);
a04651f4 3333 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3334 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3335 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3336 GvMULTI_on(tmpgv);
af8c498a 3337 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3338
85e6fe83 3339 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3340 GvMULTI_on(tmpgv);
af8c498a 3341 io = GvIOp(tmpgv);
a04651f4 3342 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3343 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3344 setdefout(tmpgv);
adbc6bb1 3345 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3346 GvMULTI_on(tmpgv);
af8c498a 3347 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3348
bf49b057
GS		 3349 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3350 GvMULTI_on(PL_stderrgv);
3351 io = GvIOp(PL_stderrgv);
a04651f4 3352 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3353 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3354 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3355 GvMULTI_on(tmpgv);
af8c498a 3356 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3357
3280af22 3358 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3359
bf4acbe4
GS		 3360 if (PL_osname)
3361 Safefree(PL_osname);
3362 PL_osname = savepv(OSNAME);
79072805 3363}
33b78306 3364
76e3520e 3365STATIC void
cea2e8a9 3366S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3367{
79072805
LW		 3368 char *s;
3369 SV *sv;
3370 GV* tmpgv;
9cbac4c7 3371#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3372 char **dup_env_base = 0;
103a7189 3373 int dup_env_count = 0;
9cbac4c7 3374#endif
fe14fcc3 3375
79072805 3376 argc--,argv++; /* skip name of script */
3280af22 3377 if (PL_doswitches) {
79072805
LW		 3378 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3379 if (!argv[0][1])
3380 break;
379d538a 3381 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3382 argc--,argv++;
3383 break;
3384 }
155aba94 3385 if ((s = strchr(argv[0], '='))) {
79072805 3386 *s++ = '\0';
85e6fe83 3387 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3388 }
3389 else
85e6fe83 3390 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3391 }
79072805 3392 }
3280af22
NIS		 3393 PL_toptarget = NEWSV(0,0);
3394 sv_upgrade(PL_toptarget, SVt_PVFM);
3395 sv_setpvn(PL_toptarget, "", 0);
3396 PL_bodytarget = NEWSV(0,0);
3397 sv_upgrade(PL_bodytarget, SVt_PVFM);
3398 sv_setpvn(PL_bodytarget, "", 0);
3399 PL_formtarget = PL_bodytarget;
79072805 3400
bbce6d69 3401 TAINT;
155aba94 3402 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3403#ifdef MACOS_TRADITIONAL
3404 /* $0 is not majick on a Mac */
3405 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3406#else
3280af22 3407 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3408 magicname("0", "0", 1);
bf4acbe4 3409#endif
79072805 3410 }
155aba94 3411 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3412#ifdef OS2
23da6c43 3413 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3414#else
3280af22 3415 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3416#endif
155aba94 3417 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3418 GvMULTI_on(PL_argvgv);
3419 (void)gv_AVadd(PL_argvgv);
3420 av_clear(GvAVn(PL_argvgv));
79072805 3421 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3422 SV *sv = newSVpv(argv[0],0);
3423 av_push(GvAVn(PL_argvgv),sv);
3424 if (PL_widesyscalls)
e84ff256 3425 (void)sv_utf8_decode(sv);
79072805
LW		 3426 }
3427 }
155aba94 3428 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3429 HV *hv;
3280af22
NIS		 3430 GvMULTI_on(PL_envgv);
3431 hv = GvHVn(PL_envgv);
14befaf4 3432 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3433#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3434 /* Note that if the supplied env parameter is actually a copy
3435 of the global environ then it may now point to free'd memory
3436 if the environment has been modified since. To avoid this
3437 problem we treat env==NULL as meaning 'use the default'
3438 */
3439 if (!env)
3440 env = environ;
5aabfad6 3441 if (env != environ)
79072805 3442 environ[0] = Nullch;
103a7189
JH		 3443#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3444 {
3445 char **env_base;
9041c2e3 3446 for (env_base = env; *env; env++)
103a7189
JH		 3447 dup_env_count++;
3448 if ((dup_env_base = (char **)
480bfd1e 3449 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3450 char **dup_env;
3451 for (env = env_base, dup_env = dup_env_base;
3452 *env;
480bfd1e
JH		 3453 env++, dup_env++) {
3454 /* With environ one needs to use safesysmalloc(). */
3455 *dup_env = safesysmalloc(strlen(*env) + 1);
3456 (void)strcpy(*dup_env, *env);
3457 }
103a7189
JH		 3458 *dup_env = Nullch;
3459 env = dup_env_base;
3460 } /* else what? */
3461 }
3462#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3463 if (env)
3464 for (; *env; env++) {
93a17b20