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two fake test failures on VMS fixed
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW
1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
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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
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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
PP
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
PP
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
PP
255#endif
256
52853b95
GS
257#ifdef HAVE_INTERP_INTERN
258 sys_intern_init();
259#endif
260
4b556e6c 261 PerlIO_init(); /* Hook to IO system */
760ac839 262
3280af22
NIS
263 PL_fdpid = newAV(); /* for remembering popen pids by fd */
264 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 265 PL_errors = newSVpvn("",0);
1fcf4c12 266#ifdef USE_ITHREADS
13137afc
AB
267 PL_regex_padav = newAV();
268 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
269 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 270#endif
e5dd39fc
AB
271#ifdef USE_REENTRANT_API
272 New(31337, PL_reentrant_buffer,1, REBUF);
273 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
274#endif
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
PP
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
PP
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;
1cc8b4c5
AB
501 }
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
PP
515 /* loosen bonds of global variables */
516
3280af22
NIS
517 if(PL_rsfp) {
518 (void)PerlIO_close(PL_rsfp);
519 PL_rsfp = Nullfp;
8ebc5c01
PP
520 }
521
522 /* Filters for program text */
3280af22
NIS
523 SvREFCNT_dec(PL_rsfp_filters);
524 PL_rsfp_filters = Nullav;
8ebc5c01
PP
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
PP
546 }
547
bc0a45ed
DM
548 while (--PL_origargc >= 0) {
549 Safefree(PL_origargv[PL_origargc]);
550 }
551 Safefree(PL_origargv);
552
8ebc5c01
PP
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
PP
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
PP
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
PP
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
PP
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
PP
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
3280af22 803 Safefree(PL_origfilename);
3280af22 804 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
805 if (PL_reg_curpm)
806 Safefree(PL_reg_curpm);
82ba1be6 807 Safefree(PL_reg_poscache);
3280af22
NIS
808 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
809 Safefree(PL_op_mask);
cf36064f
GS
810 Safefree(PL_psig_ptr);
811 Safefree(PL_psig_name);
2c2666fc 812 Safefree(PL_bitcount);
ce08f86c 813 Safefree(PL_psig_pend);
6e72f9df 814 nuke_stacks();
3280af22 815 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 816
a0d0e21e 817 DEBUG_P(debprofdump());
4d1ff10f 818#ifdef USE_5005THREADS
5f08fbcd 819 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
820 MUTEX_DESTROY(&PL_sv_mutex);
821 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 822 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 823 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 824 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
825#ifdef EMULATE_ATOMIC_REFCOUNTS
826 MUTEX_DESTROY(&PL_svref_mutex);
827#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 828
8023c3ce 829 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
830 Safefree(SvPVX(PL_thrsv));
831 Safefree(SvANY(PL_thrsv));
832 Safefree(PL_thrsv);
833 PL_thrsv = Nullsv;
4d1ff10f 834#endif /* USE_5005THREADS */
d33b2eba 835
e5dd39fc
AB
836#ifdef USE_REENTRANT_API
837 Safefree(PL_reentrant_buffer->tmbuff);
838 Safefree(PL_reentrant_buffer);
839#endif
840
612f20c3
GS
841 sv_free_arenas();
842
fc36a67e
PP
843 /* As the absolutely last thing, free the non-arena SV for mess() */
844
3280af22 845 if (PL_mess_sv) {
9c63abab
GS
846 /* it could have accumulated taint magic */
847 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
848 MAGIC* mg;
849 MAGIC* moremagic;
850 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
851 moremagic = mg->mg_moremagic;
14befaf4
DM
852 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
853 && mg->mg_len >= 0)
9c63abab
GS
854 Safefree(mg->mg_ptr);
855 Safefree(mg);
856 }
857 }
fc36a67e 858 /* we know that type >= SVt_PV */
155aba94 859 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
860 Safefree(SvPVX(PL_mess_sv));
861 Safefree(SvANY(PL_mess_sv));
862 Safefree(PL_mess_sv);
863 PL_mess_sv = Nullsv;
fc36a67e 864 }
31d77e54 865 return STATUS_NATIVE_EXPORT;
79072805
LW
866}
867
954c1994
GS
868/*
869=for apidoc perl_free
870
871Releases a Perl interpreter. See L<perlembed>.
872
873=cut
874*/
875
79072805 876void
0cb96387 877perl_free(pTHXx)
79072805 878{
acfe0abc 879#if defined(WIN32) || defined(NETWARE)
ce3e5b80 880# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
881# ifdef NETWARE
882 void *host = nw_internal_host;
883# else
884 void *host = w32_internal_host;
885# endif
886# ifndef NETWARE
887 if (PerlProc_lasthost()) {
6ea0e807 888# ifdef USE_PERLIO
ce08f86c 889 PerlIO_cleanup();
6ea0e807 890# endif
acfe0abc
GS
891 }
892# endif
ce3e5b80 893 PerlMem_free(aTHXx);
acfe0abc
GS
894# ifdef NETWARE
895 nw5_delete_internal_host(host);
896# else
897 win32_delete_internal_host(host);
898# endif
1c0ca838 899# else
6ea0e807 900# ifdef USE_PERLIO
acfe0abc 901 PerlIO_cleanup();
6ea0e807 902# endif
1c0ca838
GS
903 PerlMem_free(aTHXx);
904# endif
acfe0abc
GS
905#else
906 PerlMem_free(aTHXx);
76e3520e 907#endif
79072805
LW
908}
909
4b556e6c 910void
864dbfa3 911Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 912{
3280af22
NIS
913 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
914 PL_exitlist[PL_exitlistlen].fn = fn;
915 PL_exitlist[PL_exitlistlen].ptr = ptr;
916 ++PL_exitlistlen;
4b556e6c
JD
917}
918
954c1994
GS
919/*
920=for apidoc perl_parse
921
922Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
923
924=cut
925*/
926
79072805 927int
0cb96387 928perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 929{
6224f72b 930 I32 oldscope;
6224f72b 931 int ret;
db36c5a1 932 dJMPENV;
4d1ff10f 933#ifdef USE_5005THREADS
cea2e8a9
GS
934 dTHX;
935#endif
8d063cd8 936
a687059c
LW
937#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
938#ifdef IAMSUID
939#undef IAMSUID
cea2e8a9 940 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
941setuid perl scripts securely.\n");
942#endif
943#endif
944
3280af22 945 PL_origargc = argc;
bc0a45ed
DM
946 {
947 /* we copy rather than point to argv
948 * since perl_clone will copy and perl_destruct
949 * has no way of knowing if we've made a copy or
950 * just point to argv
951 */
952 int i = PL_origargc;
953 New(0, PL_origargv, i+1, char*);
954 PL_origargv[i] = '\0';
955 while (i-- > 0) {
956 PL_origargv[i] = savepv(argv[i]);
957 }
958 }
959
0631ea03 960
a0d0e21e 961
3280af22 962 if (PL_do_undump) {
a0d0e21e
LW
963
964 /* Come here if running an undumped a.out. */
965
3280af22
NIS
966 PL_origfilename = savepv(argv[0]);
967 PL_do_undump = FALSE;
a0d0e21e 968 cxstack_ix = -1; /* start label stack again */
748a9306 969 init_ids();
a0d0e21e
LW
970 init_postdump_symbols(argc,argv,env);
971 return 0;
972 }
973
3280af22
NIS
974 if (PL_main_root) {
975 PL_curpad = AvARRAY(PL_comppad);
976 op_free(PL_main_root);
977 PL_main_root = Nullop;
ff0cee69 978 }
3280af22
NIS
979 PL_main_start = Nullop;
980 SvREFCNT_dec(PL_main_cv);
981 PL_main_cv = Nullcv;
79072805 982
3280af22
NIS
983 time(&PL_basetime);
984 oldscope = PL_scopestack_ix;
599cee73 985 PL_dowarn = G_WARN_OFF;
f86702cc 986
14dd3ad8
GS
987#ifdef PERL_FLEXIBLE_EXCEPTIONS
988 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
989#else
990 JMPENV_PUSH(ret);
991#endif
6224f72b 992 switch (ret) {
312caa8e 993 case 0:
14dd3ad8
GS
994#ifndef PERL_FLEXIBLE_EXCEPTIONS
995 parse_body(env,xsinit);
996#endif
7d30b5c4
GS
997 if (PL_checkav)
998 call_list(oldscope, PL_checkav);
14dd3ad8
GS
999 ret = 0;
1000 break;
6224f72b
GS
1001 case 1:
1002 STATUS_ALL_FAILURE;
1003 /* FALL THROUGH */
1004 case 2:
1005 /* my_exit() was called */
3280af22 1006 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1007 LEAVE;
1008 FREETMPS;
3280af22 1009 PL_curstash = PL_defstash;
7d30b5c4
GS
1010 if (PL_checkav)
1011 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1012 ret = STATUS_NATIVE_EXPORT;
1013 break;
6224f72b 1014 case 3:
bf49b057 1015 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1016 ret = 1;
1017 break;
6224f72b 1018 }
14dd3ad8
GS
1019 JMPENV_POP;
1020 return ret;
1021}
1022
1023#ifdef PERL_FLEXIBLE_EXCEPTIONS
1024STATIC void *
1025S_vparse_body(pTHX_ va_list args)
1026{
1027 char **env = va_arg(args, char**);
1028 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1029
1030 return parse_body(env, xsinit);
312caa8e 1031}
14dd3ad8 1032#endif
312caa8e
CS
1033
1034STATIC void *
14dd3ad8 1035S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1036{
312caa8e
CS
1037 int argc = PL_origargc;
1038 char **argv = PL_origargv;
312caa8e
CS
1039 char *scriptname = NULL;
1040 int fdscript = -1;
1041 VOL bool dosearch = FALSE;
1042 char *validarg = "";
1043 AV* comppadlist;
1044 register SV *sv;
1045 register char *s;
cf756827 1046 char *cddir = Nullch;
312caa8e 1047
3280af22 1048 sv_setpvn(PL_linestr,"",0);
79cb57f6 1049 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
1050 SAVEFREESV(sv);
1051 init_main_stash();
54310121 1052
6224f72b
GS
1053 for (argc--,argv++; argc > 0; argc--,argv++) {
1054 if (argv[0][0] != '-' || !argv[0][1])
1055 break;
1056#ifdef DOSUID
1057 if (*validarg)
1058 validarg = " PHOOEY ";
1059 else
1060 validarg = argv[0];
13281fa4 1061#endif
6224f72b
GS
1062 s = argv[0]+1;
1063 reswitch:
1064 switch (*s) {
729a02f2
GS
1065 case 'C':
1066#ifdef WIN32
c0932edc 1067 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
1068 /* FALL THROUGH */
1069#endif
1d5472a9
GS
1070#ifndef PERL_STRICT_CR
1071 case '\r':
1072#endif
6224f72b
GS
1073 case ' ':
1074 case '0':
1075 case 'F':
1076 case 'a':
1077 case 'c':
1078 case 'd':
1079 case 'D':
1080 case 'h':
1081 case 'i':
1082 case 'l':
1083 case 'M':
1084 case 'm':
1085 case 'n':
1086 case 'p':
1087 case 's':
1088 case 'u':
1089 case 'U':
1090 case 'v':
599cee73
PM
1091 case 'W':
1092 case 'X':
6224f72b 1093 case 'w':
155aba94 1094 if ((s = moreswitches(s)))
6224f72b
GS
1095 goto reswitch;
1096 break;
33b78306 1097
6224f72b 1098 case 'T':
3280af22 1099 PL_tainting = TRUE;
6224f72b
GS
1100 s++;
1101 goto reswitch;
f86702cc 1102
6224f72b 1103 case 'e':
bf4acbe4
GS
1104#ifdef MACOS_TRADITIONAL
1105 /* ignore -e for Dev:Pseudo argument */
1106 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1107 break;
bf4acbe4 1108#endif
3280af22 1109 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1110 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1111 if (!PL_e_script) {
79cb57f6 1112 PL_e_script = newSVpvn("",0);
0cb96387 1113 filter_add(read_e_script, NULL);
6224f72b
GS
1114 }
1115 if (*++s)
3280af22 1116 sv_catpv(PL_e_script, s);
6224f72b 1117 else if (argv[1]) {
3280af22 1118 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1119 argc--,argv++;
1120 }
1121 else
cea2e8a9 1122 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1123 sv_catpv(PL_e_script, "\n");
6224f72b 1124 break;
afe37c7d 1125
6224f72b
GS
1126 case 'I': /* -I handled both here and in moreswitches() */
1127 forbid_setid("-I");
1128 if (!*++s && (s=argv[1]) != Nullch) {
1129 argc--,argv++;
1130 }
6224f72b 1131 if (s && *s) {
0df16ed7
GS
1132 char *p;
1133 STRLEN len = strlen(s);
1134 p = savepvn(s, len);
9c8a64f0 1135 incpush(p, TRUE, TRUE);
0df16ed7
GS
1136 sv_catpvn(sv, "-I", 2);
1137 sv_catpvn(sv, p, len);
1138 sv_catpvn(sv, " ", 1);
6224f72b 1139 Safefree(p);
0df16ed7
GS
1140 }
1141 else
a67e862a 1142 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1143 break;
1144 case 'P':
1145 forbid_setid("-P");
3280af22 1146 PL_preprocess = TRUE;
6224f72b
GS
1147 s++;
1148 goto reswitch;
1149 case 'S':
1150 forbid_setid("-S");
1151 dosearch = TRUE;
1152 s++;
1153 goto reswitch;
1154 case 'V':
3280af22
NIS
1155 if (!PL_preambleav)
1156 PL_preambleav = newAV();
1157 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1158 if (*++s != ':') {
3280af22 1159 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1160#ifdef VMS
6b88bc9c 1161 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1162#else
3280af22 1163 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1164#endif
3280af22 1165 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1166# ifdef DEBUGGING
3280af22 1167 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1168# endif
6224f72b 1169# ifdef MULTIPLICITY
8f872242 1170 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1171# endif
4d1ff10f
AB
1172# ifdef USE_5005THREADS
1173 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1174# endif
ac5e8965
JH
1175# ifdef USE_ITHREADS
1176 sv_catpv(PL_Sv," USE_ITHREADS");
1177# endif
10cc9d2a
JH
1178# ifdef USE_64_BIT_INT
1179 sv_catpv(PL_Sv," USE_64_BIT_INT");
1180# endif
1181# ifdef USE_64_BIT_ALL
1182 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1183# endif
1184# ifdef USE_LONG_DOUBLE
1185 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1186# endif
53430762
JH
1187# ifdef USE_LARGE_FILES
1188 sv_catpv(PL_Sv," USE_LARGE_FILES");
1189# endif
ac5e8965
JH
1190# ifdef USE_SOCKS
1191 sv_catpv(PL_Sv," USE_SOCKS");
1192# endif
b363f7ed
GS
1193# ifdef PERL_IMPLICIT_CONTEXT
1194 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1195# endif
1196# ifdef PERL_IMPLICIT_SYS
1197 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1198# endif
3280af22 1199 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1200
6224f72b
GS
1201#if defined(LOCAL_PATCH_COUNT)
1202 if (LOCAL_PATCH_COUNT > 0) {
1203 int i;
3280af22 1204 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1205 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1206 if (PL_localpatches[i])
cea2e8a9 1207 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1208 }
1209 }
1210#endif
cea2e8a9 1211 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1212#ifdef __DATE__
1213# ifdef __TIME__
cea2e8a9 1214 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1215# else
cea2e8a9 1216 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1217# endif
1218#endif
3280af22 1219 sv_catpv(PL_Sv, "; \
6224f72b 1220$\"=\"\\n \"; \
69fcd688
JH
1221@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1222#ifdef __CYGWIN__
1223 sv_catpv(PL_Sv,"\
1224push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1225#endif
1226 sv_catpv(PL_Sv, "\
6224f72b
GS
1227print \" \\%ENV:\\n @env\\n\" if @env; \
1228print \" \\@INC:\\n @INC\\n\";");
1229 }
1230 else {
3280af22
NIS
1231 PL_Sv = newSVpv("config_vars(qw(",0);
1232 sv_catpv(PL_Sv, ++s);
1233 sv_catpv(PL_Sv, "))");
6224f72b
GS
1234 s += strlen(s);
1235 }
3280af22 1236 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1237 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1238 goto reswitch;
1239 case 'x':
3280af22 1240 PL_doextract = TRUE;
6224f72b
GS
1241 s++;
1242 if (*s)
f4c556ac 1243 cddir = s;
6224f72b
GS
1244 break;
1245 case 0:
1246 break;
1247 case '-':
1248 if (!*++s || isSPACE(*s)) {
1249 argc--,argv++;
1250 goto switch_end;
1251 }
1252 /* catch use of gnu style long options */
1253 if (strEQ(s, "version")) {
1254 s = "v";
1255 goto reswitch;
1256 }
1257 if (strEQ(s, "help")) {
1258 s = "h";
1259 goto reswitch;
1260 }
1261 s--;
1262 /* FALL THROUGH */
1263 default:
cea2e8a9 1264 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1265 }
1266 }
6224f72b 1267 switch_end:
54310121 1268
f675dbe5
CB
1269 if (
1270#ifndef SECURE_INTERNAL_GETENV
1271 !PL_tainting &&
1272#endif
cf756827 1273 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1274 {
cf756827 1275 char *popt = s;
74288ac8
GS
1276 while (isSPACE(*s))
1277 s++;
1278 if (*s == '-' && *(s+1) == 'T')
1279 PL_tainting = TRUE;
1280 else {
cf756827 1281 char *popt_copy = Nullch;
74288ac8 1282 while (s && *s) {
4ea8f8fb 1283 char *d;
74288ac8
GS
1284 while (isSPACE(*s))
1285 s++;
1286 if (*s == '-') {
1287 s++;
1288 if (isSPACE(*s))
1289 continue;
1290 }
4ea8f8fb 1291 d = s;
74288ac8
GS
1292 if (!*s)
1293 break;
1294 if (!strchr("DIMUdmw", *s))
cea2e8a9 1295 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1296 while (++s && *s) {
1297 if (isSPACE(*s)) {
cf756827
GS
1298 if (!popt_copy) {
1299 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1300 s = popt_copy + (s - popt);
1301 d = popt_copy + (d - popt);
1302 }
4ea8f8fb
MS
1303 *s++ = '\0';
1304 break;
1305 }
1306 }
1307 moreswitches(d);
6224f72b 1308 }
6224f72b
GS
1309 }
1310 }
a0d0e21e 1311
6224f72b
GS
1312 if (!scriptname)
1313 scriptname = argv[0];
3280af22 1314 if (PL_e_script) {
6224f72b
GS
1315 argc++,argv--;
1316 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1317 }
1318 else if (scriptname == Nullch) {
1319#ifdef MSDOS
1320 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1321 moreswitches("h");
1322#endif
1323 scriptname = "-";
1324 }
1325
1326 init_perllib();
1327
1328 open_script(scriptname,dosearch,sv,&fdscript);
1329
1330 validate_suid(validarg, scriptname,fdscript);
1331
64ca3a65 1332#ifndef PERL_MICRO
0b5b802d
GS
1333#if defined(SIGCHLD) || defined(SIGCLD)
1334 {
1335#ifndef SIGCHLD
1336# define SIGCHLD SIGCLD
1337#endif
1338 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1339 if (sigstate == SIG_IGN) {
1340 if (ckWARN(WARN_SIGNAL))
1341 Perl_warner(aTHX_ WARN_SIGNAL,
1342 "Can't ignore signal CHLD, forcing to default");
1343 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1344 }
1345 }
1346#endif
64ca3a65 1347#endif
0b5b802d 1348
bf4acbe4
GS
1349#ifdef MACOS_TRADITIONAL
1350 if (PL_doextract || gMacPerl_AlwaysExtract) {
1351#else
f4c556ac 1352 if (PL_doextract) {
bf4acbe4 1353#endif
6224f72b 1354 find_beginning();
f4c556ac
GS
1355 if (cddir && PerlDir_chdir(cddir) < 0)
1356 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1357
1358 }
6224f72b 1359
3280af22
NIS
1360 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1361 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1362 CvUNIQUE_on(PL_compcv);
1363
1364 PL_comppad = newAV();
1365 av_push(PL_comppad, Nullsv);
1366 PL_curpad = AvARRAY(PL_comppad);
1367 PL_comppad_name = newAV();
1368 PL_comppad_name_fill = 0;
1369 PL_min_intro_pending = 0;
1370 PL_padix = 0;
4d1ff10f 1371#ifdef USE_5005THREADS
79cb57f6 1372 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1373 PL_curpad[0] = (SV*)newAV();
1374 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1375 CvOWNER(PL_compcv) = 0;
1376 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1377 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1378#endif /* USE_5005THREADS */
6224f72b
GS
1379
1380 comppadlist = newAV();
1381 AvREAL_off(comppadlist);
3280af22
NIS
1382 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1383 av_store(comppadlist, 1, (SV*)PL_comppad);
1384 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1385
0c4f7ff0 1386 boot_core_PerlIO();
6224f72b 1387 boot_core_UNIVERSAL();
9a34ef1d 1388#ifndef PERL_MICRO
09bef843 1389 boot_core_xsutils();
9a34ef1d 1390#endif
6224f72b
GS
1391
1392 if (xsinit)
acfe0abc 1393 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1394#ifndef PERL_MICRO
ed79a026 1395#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1396 init_os_extras();
6224f72b 1397#endif
64ca3a65 1398#endif
6224f72b 1399
29209bc5 1400#ifdef USE_SOCKS
1b9c9cf5
DH
1401# ifdef HAS_SOCKS5_INIT
1402 socks5_init(argv[0]);
1403# else
29209bc5 1404 SOCKSinit(argv[0]);
1b9c9cf5 1405# endif
ac27b0f5 1406#endif
29209bc5 1407
6224f72b
GS
1408 init_predump_symbols();
1409 /* init_postdump_symbols not currently designed to be called */
1410 /* more than once (ENV isn't cleared first, for example) */
1411 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1412 if (!PL_do_undump)
6224f72b
GS
1413 init_postdump_symbols(argc,argv,env);
1414
1415 init_lexer();
1416
1417 /* now parse the script */
1418
91487cfc 1419 SETERRNO(0,SS$_NORMAL);
3280af22 1420 PL_error_count = 0;
bf4acbe4
GS
1421#ifdef MACOS_TRADITIONAL
1422 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1423 if (PL_minus_c)
1424 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1425 else {
1426 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1427 MacPerl_MPWFileName(PL_origfilename));
1428 }
1429 }
1430#else
3280af22
NIS
1431 if (yyparse() || PL_error_count) {
1432 if (PL_minus_c)
cea2e8a9 1433 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1434 else {
cea2e8a9 1435 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1436 PL_origfilename);
6224f72b
GS
1437 }
1438 }
bf4acbe4 1439#endif
57843af0 1440 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1441 PL_curstash = PL_defstash;
1442 PL_preprocess = FALSE;
1443 if (PL_e_script) {
1444 SvREFCNT_dec(PL_e_script);
1445 PL_e_script = Nullsv;
6224f72b
GS
1446 }
1447
8bfdd7d9
HS
1448/*
1449 Not sure that this is still the right place to do this now that we
1450 no longer use PL_nrs. HVDS 2001/09/09
1451*/
864dbfa3 1452 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1453
3280af22 1454 if (PL_do_undump)
6224f72b
GS
1455 my_unexec();
1456
57843af0
GS
1457 if (isWARN_ONCE) {
1458 SAVECOPFILE(PL_curcop);
1459 SAVECOPLINE(PL_curcop);
3280af22 1460 gv_check(PL_defstash);
57843af0 1461 }
6224f72b
GS
1462
1463 LEAVE;
1464 FREETMPS;
1465
1466#ifdef MYMALLOC
1467 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1468 dump_mstats("after compilation:");
1469#endif
1470
1471 ENTER;
3280af22 1472 PL_restartop = 0;
312caa8e 1473 return NULL;
6224f72b
GS
1474}
1475
954c1994
GS
1476/*
1477=for apidoc perl_run
1478
1479Tells a Perl interpreter to run. See L<perlembed>.
1480
1481=cut
1482*/
1483
6224f72b 1484int
0cb96387 1485perl_run(pTHXx)
6224f72b 1486{
6224f72b 1487 I32 oldscope;
14dd3ad8 1488 int ret = 0;
db36c5a1 1489 dJMPENV;
4d1ff10f 1490#ifdef USE_5005THREADS
cea2e8a9
GS
1491 dTHX;
1492#endif
6224f72b 1493
3280af22 1494 oldscope = PL_scopestack_ix;
6224f72b 1495
14dd3ad8 1496#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1497 redo_body:
14dd3ad8
GS
1498 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1499#else
1500 JMPENV_PUSH(ret);
1501#endif
6224f72b
GS
1502 switch (ret) {
1503 case 1:
1504 cxstack_ix = -1; /* start context stack again */
312caa8e 1505 goto redo_body;
14dd3ad8
GS
1506 case 0: /* normal completion */
1507#ifndef PERL_FLEXIBLE_EXCEPTIONS
1508 redo_body:
1509 run_body(oldscope);
1510#endif
1511 /* FALL THROUGH */
1512 case 2: /* my_exit() */
3280af22 1513 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1514 LEAVE;
1515 FREETMPS;
3280af22 1516 PL_curstash = PL_defstash;
31d77e54
AB
1517 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1518 PL_endav && !PL_minus_c)
1519 call_list(oldscope, PL_endav);
6224f72b
GS
1520#ifdef MYMALLOC
1521 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1522 dump_mstats("after execution: ");
1523#endif
14dd3ad8
GS
1524 ret = STATUS_NATIVE_EXPORT;
1525 break;
6224f72b 1526 case 3:
312caa8e
CS
1527 if (PL_restartop) {
1528 POPSTACK_TO(PL_mainstack);
1529 goto redo_body;
6224f72b 1530 }
bf49b057 1531 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1532 FREETMPS;
14dd3ad8
GS
1533 ret = 1;
1534 break;
6224f72b
GS
1535 }
1536
14dd3ad8
GS
1537 JMPENV_POP;
1538 return ret;
312caa8e
CS
1539}
1540
14dd3ad8 1541#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1542STATIC void *
14dd3ad8 1543S_vrun_body(pTHX_ va_list args)
312caa8e 1544{
312caa8e
CS
1545 I32 oldscope = va_arg(args, I32);
1546
14dd3ad8
GS
1547 return run_body(oldscope);
1548}
1549#endif
1550
1551
1552STATIC void *
1553S_run_body(pTHX_ I32 oldscope)
1554{
6224f72b 1555 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1556 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1557
3280af22 1558 if (!PL_restartop) {
6224f72b
GS
1559 DEBUG_x(dump_all());
1560 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1561 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1562 PTR2UV(thr)));
6224f72b 1563
3280af22 1564 if (PL_minus_c) {
bf4acbe4 1565#ifdef MACOS_TRADITIONAL
be708cc0 1566 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1567#else
bf49b057 1568 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1569#endif
6224f72b
GS
1570 my_exit(0);
1571 }
3280af22 1572 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1573 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1574 if (PL_initav)
1575 call_list(oldscope, PL_initav);
6224f72b
GS
1576 }
1577
1578 /* do it */
1579
3280af22 1580 if (PL_restartop) {
533c011a 1581 PL_op = PL_restartop;
3280af22 1582 PL_restartop = 0;
cea2e8a9 1583 CALLRUNOPS(aTHX);
6224f72b 1584 }
3280af22
NIS
1585 else if (PL_main_start) {
1586 CvDEPTH(PL_main_cv) = 1;
533c011a 1587 PL_op = PL_main_start;
cea2e8a9 1588 CALLRUNOPS(aTHX);
6224f72b
GS
1589 }
1590
f6b3007c
JH
1591 my_exit(0);
1592 /* NOTREACHED */
312caa8e 1593 return NULL;
6224f72b
GS
1594}
1595
954c1994
GS
1596/*
1597=for apidoc p||get_sv
1598
1599Returns the SV of the specified Perl scalar. If C<create> is set and the
1600Perl variable does not exist then it will be created. If C<create> is not
1601set and the variable does not exist then NULL is returned.
1602
1603=cut
1604*/
1605
6224f72b 1606SV*
864dbfa3 1607Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1608{
1609 GV *gv;
4d1ff10f 1610#ifdef USE_5005THREADS
6224f72b
GS
1611 if (name[1] == '\0' && !isALPHA(name[0])) {
1612 PADOFFSET tmp = find_threadsv(name);
411caa50 1613 if (tmp != NOT_IN_PAD)
6224f72b 1614 return THREADSV(tmp);
6224f72b 1615 }
4d1ff10f 1616#endif /* USE_5005THREADS */
6224f72b
GS
1617 gv = gv_fetchpv(name, create, SVt_PV);
1618 if (gv)
1619 return GvSV(gv);
1620 return Nullsv;
1621}
1622
954c1994
GS
1623/*
1624=for apidoc p||get_av
1625
1626Returns the AV of the specified Perl array. If C<create> is set and the
1627Perl variable does not exist then it will be created. If C<create> is not
1628set and the variable does not exist then NULL is returned.
1629
1630=cut
1631*/
1632
6224f72b 1633AV*
864dbfa3 1634Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1635{
1636 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1637 if (create)
1638 return GvAVn(gv);
1639 if (gv)
1640 return GvAV(gv);
1641 return Nullav;
1642}
1643
954c1994
GS
1644/*
1645=for apidoc p||get_hv
1646
1647Returns the HV of the specified Perl hash. If C<create> is set and the
1648Perl variable does not exist then it will be created. If C<create> is not
1649set and the variable does not exist then NULL is returned.
1650
1651=cut
1652*/
1653
6224f72b 1654HV*
864dbfa3 1655Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1656{
a0d0e21e
LW
1657 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1658 if (create)
1659 return GvHVn(gv);
1660 if (gv)
1661 return GvHV(gv);
1662 return Nullhv;
1663}
1664
954c1994
GS
1665/*
1666=for apidoc p||get_cv
1667
1668Returns the CV of the specified Perl subroutine. If C<create> is set and
1669the Perl subroutine does not exist then it will be declared (which has the
1670same effect as saying C<sub name;>). If C<create> is not set and the
1671subroutine does not exist then NULL is returned.
1672
1673=cut
1674*/
1675
a0d0e21e 1676CV*
864dbfa3 1677Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1678{
1679 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1680 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1681 /* XXX this is probably not what they think they're getting.
1682 * It has the same effect as "sub name;", i.e. just a forward
1683 * declaration! */
8ebc5c01 1684 if (create && !GvCVu(gv))
774d564b 1685 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1686 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1687 Nullop,
a0d0e21e
LW
1688 Nullop);
1689 if (gv)
8ebc5c01 1690 return GvCVu(gv);
a0d0e21e
LW
1691 return Nullcv;
1692}
1693
79072805
LW
1694/* Be sure to refetch the stack pointer after calling these routines. */
1695
954c1994
GS
1696/*
1697=for apidoc p||call_argv
1698
1699Performs a callback to the specified Perl sub. See L<perlcall>.
1700
1701=cut
1702*/
1703
a0d0e21e 1704I32
864dbfa3 1705Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1706
8ac85365
NIS
1707 /* See G_* flags in cop.h */
1708 /* null terminated arg list */
8990e307 1709{
a0d0e21e 1710 dSP;
8990e307 1711
924508f0 1712 PUSHMARK(SP);
a0d0e21e 1713 if (argv) {
8990e307 1714 while (*argv) {
a0d0e21e 1715 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1716 argv++;
1717 }
a0d0e21e 1718 PUTBACK;
8990e307 1719 }
864dbfa3 1720 return call_pv(sub_name, flags);
8990e307
LW
1721}
1722
954c1994
GS
1723/*
1724=for apidoc p||call_pv
1725
1726Performs a callback to the specified Perl sub. See L<perlcall>.
1727
1728=cut
1729*/
1730
a0d0e21e 1731I32
864dbfa3 1732Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1733 /* name of the subroutine */
1734 /* See G_* flags in cop.h */
a0d0e21e 1735{
864dbfa3 1736 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1737}
1738
954c1994
GS
1739/*
1740=for apidoc p||call_method
1741
1742Performs a callback to the specified Perl method. The blessed object must
1743be on the stack. See L<perlcall>.
1744
1745=cut
1746*/
1747
a0d0e21e 1748I32
864dbfa3 1749Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1750 /* name of the subroutine */
1751 /* See G_* flags in cop.h */
a0d0e21e 1752{
968b3946 1753 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1754}
1755
1756/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1757/*
1758=for apidoc p||call_sv
1759
1760Performs a callback to the Perl sub whose name is in the SV. See
1761L<perlcall>.
1762
1763=cut
1764*/
1765
a0d0e21e 1766I32
864dbfa3 1767Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1768 /* See G_* flags in cop.h */
a0d0e21e 1769{
924508f0 1770 dSP;
a0d0e21e 1771 LOGOP myop; /* fake syntax tree node */
968b3946 1772 UNOP method_op;
aa689395 1773 I32 oldmark;
13689cfe 1774 volatile I32 retval = 0;
a0d0e21e 1775 I32 oldscope;
54310121 1776 bool oldcatch = CATCH_GET;
6224f72b 1777 int ret;
533c011a 1778 OP* oldop = PL_op;
db36c5a1 1779 dJMPENV;
1e422769 1780
a0d0e21e
LW
1781 if (flags & G_DISCARD) {
1782 ENTER;
1783 SAVETMPS;
1784 }
1785
aa689395 1786 Zero(&myop, 1, LOGOP);
54310121 1787 myop.op_next = Nullop;
f51d4af5 1788 if (!(flags & G_NOARGS))
aa689395 1789 myop.op_flags |= OPf_STACKED;
54310121
PP
1790 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1791 (flags & G_ARRAY) ? OPf_WANT_LIST :
1792 OPf_WANT_SCALAR);
462e5cf6 1793 SAVEOP();
533c011a 1794 PL_op = (OP*)&myop;
aa689395 1795
3280af22
NIS
1796 EXTEND(PL_stack_sp, 1);
1797 *++PL_stack_sp = sv;
aa689395 1798 oldmark = TOPMARK;
3280af22 1799 oldscope = PL_scopestack_ix;
a0d0e21e 1800
3280af22 1801 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1802 /* Handle first BEGIN of -d. */
3280af22 1803 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1804 /* Try harder, since this may have been a sighandler, thus
1805 * curstash may be meaningless. */
3280af22 1806 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1807 && !(flags & G_NODEBUG))
533c011a 1808 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1809
968b3946
GS
1810 if (flags & G_METHOD) {
1811 Zero(&method_op, 1, UNOP);
1812 method_op.op_next = PL_op;
1813 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1814 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1815 PL_op = (OP*)&method_op;
968b3946
GS
1816 }
1817
312caa8e 1818 if (!(flags & G_EVAL)) {
0cdb2077 1819 CATCH_SET(TRUE);
14dd3ad8 1820 call_body((OP*)&myop, FALSE);
312caa8e 1821 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1822 CATCH_SET(oldcatch);
312caa8e
CS
1823 }
1824 else {
d78bda3d 1825 myop.op_other = (OP*)&myop;
3280af22 1826 PL_markstack_ptr--;
4633a7c4
LW
1827 /* we're trying to emulate pp_entertry() here */
1828 {
c09156bb 1829 register PERL_CONTEXT *cx;
54310121 1830 I32 gimme = GIMME_V;
ac27b0f5 1831
4633a7c4
LW
1832 ENTER;
1833 SAVETMPS;
ac27b0f5 1834
968b3946 1835 push_return(Nullop);
1d76a5c3 1836 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1837 PUSHEVAL(cx, 0, 0);
533c011a 1838 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1839
faef0170 1840 PL_in_eval = EVAL_INEVAL;
4633a7c4 1841 if (flags & G_KEEPERR)
faef0170 1842 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1843 else
38a03e6e 1844 sv_setpv(ERRSV,"");
4633a7c4 1845 }
3280af22 1846 PL_markstack_ptr++;
a0d0e21e 1847
14dd3ad8
GS
1848#ifdef PERL_FLEXIBLE_EXCEPTIONS
1849 redo_body:
1850 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1851 (OP*)&myop, FALSE);
14dd3ad8
GS
1852#else
1853 JMPENV_PUSH(ret);
1854#endif
6224f72b
GS
1855 switch (ret) {
1856 case 0:
14dd3ad8
GS
1857#ifndef PERL_FLEXIBLE_EXCEPTIONS
1858 redo_body:
1859 call_body((OP*)&myop, FALSE);
1860#endif
312caa8e
CS
1861 retval = PL_stack_sp - (PL_stack_base + oldmark);
1862 if (!(flags & G_KEEPERR))
1863 sv_setpv(ERRSV,"");
a0d0e21e 1864 break;
6224f72b 1865 case 1:
f86702cc 1866 STATUS_ALL_FAILURE;
a0d0e21e 1867 /* FALL THROUGH */
6224f72b 1868 case 2:
a0d0e21e 1869 /* my_exit() was called */
3280af22 1870 PL_curstash = PL_defstash;
a0d0e21e 1871 FREETMPS;
14dd3ad8 1872 JMPENV_POP;
cc3604b1 1873 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1874 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1875 my_exit_jump();
a0d0e21e 1876 /* NOTREACHED */
6224f72b 1877 case 3:
3280af22 1878 if (PL_restartop) {
533c011a 1879 PL_op = PL_restartop;
3280af22 1880 PL_restartop = 0;
312caa8e 1881 goto redo_body;
a0d0e21e 1882 }
3280af22 1883 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1884 if (flags & G_ARRAY)
1885 retval = 0;
1886 else {
1887 retval = 1;
3280af22 1888 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1889 }
312caa8e 1890 break;
a0d0e21e 1891 }
a0d0e21e 1892
3280af22 1893 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1894 SV **newsp;
1895 PMOP *newpm;
1896 I32 gimme;
c09156bb 1897 register PERL_CONTEXT *cx;
a0a2876f
LW
1898 I32 optype;
1899
1900 POPBLOCK(cx,newpm);
1901 POPEVAL(cx);
1902 pop_return();
3280af22 1903 PL_curpm = newpm;
a0a2876f 1904 LEAVE;
a0d0e21e 1905 }
14dd3ad8 1906 JMPENV_POP;
a0d0e21e 1907 }
1e422769 1908
a0d0e21e 1909 if (flags & G_DISCARD) {
3280af22 1910 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1911 retval = 0;
1912 FREETMPS;
1913 LEAVE;
1914 }
533c011a 1915 PL_op = oldop;
a0d0e21e
LW
1916 return retval;
1917}
1918
14dd3ad8 1919#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1920STATIC void *
14dd3ad8 1921S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1922{
1923 OP *myop = va_arg(args, OP*);
1924 int is_eval = va_arg(args, int);
1925
14dd3ad8 1926 call_body(myop, is_eval);
312caa8e
CS
1927 return NULL;
1928}
14dd3ad8 1929#endif
312caa8e
CS
1930
1931STATIC void
14dd3ad8 1932S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1933{
312caa8e
CS
1934 if (PL_op == myop) {
1935 if (is_eval)
f807eda9 1936 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1937 else
f807eda9 1938 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1939 }
1940 if (PL_op)
cea2e8a9 1941 CALLRUNOPS(aTHX);
312caa8e
CS
1942}
1943
6e72f9df 1944/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1945
954c1994
GS
1946/*
1947=for apidoc p||eval_sv
1948
1949Tells Perl to C<eval> the string in the SV.
1950
1951=cut
1952*/
1953
a0d0e21e 1954I32
864dbfa3 1955Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1956
8ac85365 1957 /* See G_* flags in cop.h */
a0d0e21e 1958{
924508f0 1959 dSP;
a0d0e21e 1960 UNOP myop; /* fake syntax tree node */
8fa7f367 1961 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1962 volatile I32 retval = 0;
4633a7c4 1963 I32 oldscope;
6224f72b 1964 int ret;
533c011a 1965 OP* oldop = PL_op;
db36c5a1 1966 dJMPENV;
84902520 1967
4633a7c4
LW
1968 if (flags & G_DISCARD) {
1969 ENTER;
1970 SAVETMPS;
1971 }
1972
462e5cf6 1973 SAVEOP();
533c011a
NIS
1974 PL_op = (OP*)&myop;
1975 Zero(PL_op, 1, UNOP);
3280af22
NIS
1976 EXTEND(PL_stack_sp, 1);
1977 *++PL_stack_sp = sv;
1978 oldscope = PL_scopestack_ix;
79072805 1979
4633a7c4
LW
1980 if (!(flags & G_NOARGS))
1981 myop.op_flags = OPf_STACKED;
79072805 1982 myop.op_next = Nullop;
6e72f9df 1983 myop.op_type = OP_ENTEREVAL;
54310121
PP
1984 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1985 (flags & G_ARRAY) ? OPf_WANT_LIST :
1986 OPf_WANT_SCALAR);
6e72f9df
PP
1987 if (flags & G_KEEPERR)
1988 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1989
14dd3ad8 1990#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1991 redo_body:
14dd3ad8 1992 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1993 (OP*)&myop, TRUE);
14dd3ad8
GS
1994#else
1995 JMPENV_PUSH(ret);
1996#endif
6224f72b
GS
1997 switch (ret) {
1998 case 0:
14dd3ad8
GS
1999#ifndef PERL_FLEXIBLE_EXCEPTIONS
2000 redo_body:
2001 call_body((OP*)&myop,TRUE);
2002#endif
312caa8e
CS
2003 retval = PL_stack_sp - (PL_stack_base + oldmark);
2004 if (!(flags & G_KEEPERR))
2005 sv_setpv(ERRSV,"");
4633a7c4 2006 break;
6224f72b 2007 case 1:
f86702cc 2008 STATUS_ALL_FAILURE;
4633a7c4 2009 /* FALL THROUGH */
6224f72b 2010 case 2:
4633a7c4 2011 /* my_exit() was called */
3280af22 2012 PL_curstash = PL_defstash;
4633a7c4 2013 FREETMPS;
14dd3ad8 2014 JMPENV_POP;
cc3604b1 2015 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2016 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2017 my_exit_jump();
4633a7c4 2018 /* NOTREACHED */
6224f72b 2019 case 3:
3280af22 2020 if (PL_restartop) {
533c011a 2021 PL_op = PL_restartop;
3280af22 2022 PL_restartop = 0;
312caa8e 2023 goto redo_body;
4633a7c4 2024 }
3280af22 2025 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2026 if (flags & G_ARRAY)
2027 retval = 0;
2028 else {
2029 retval = 1;
3280af22 2030 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2031 }
312caa8e 2032 break;
4633a7c4
LW
2033 }
2034
14dd3ad8 2035 JMPENV_POP;
4633a7c4 2036 if (flags & G_DISCARD) {
3280af22 2037 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2038 retval = 0;
2039 FREETMPS;
2040 LEAVE;
2041 }
533c011a 2042 PL_op = oldop;
4633a7c4
LW
2043 return retval;
2044}
2045
954c1994
GS
2046/*
2047=for apidoc p||eval_pv
2048
2049Tells Perl to C<eval> the given string and return an SV* result.
2050
2051=cut
2052*/
2053
137443ea 2054SV*
864dbfa3 2055Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2056{
2057 dSP;
2058 SV* sv = newSVpv(p, 0);
2059
864dbfa3 2060 eval_sv(sv, G_SCALAR);
137443ea
PP
2061 SvREFCNT_dec(sv);
2062
2063 SPAGAIN;
2064 sv = POPs;
2065 PUTBACK;
2066
2d8e6c8d
GS
2067 if (croak_on_error && SvTRUE(ERRSV)) {
2068 STRLEN n_a;
cea2e8a9 2069 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2070 }
137443ea
PP
2071
2072 return sv;
2073}
2074
4633a7c4
LW
2075/* Require a module. */
2076
954c1994
GS
2077/*
2078=for apidoc p||require_pv
2079
7d3fb230
BS
2080Tells Perl to C<require> the file named by the string argument. It is
2081analogous to the Perl code C<eval "require '$file'">. It's even
2082implemented that way; consider using Perl_load_module instead.
954c1994 2083
7d3fb230 2084=cut */
954c1994 2085
4633a7c4 2086void
864dbfa3 2087Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2088{
d3acc0f7
JP
2089 SV* sv;
2090 dSP;
e788e7d3 2091 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2092 PUTBACK;
2093 sv = sv_newmortal();
4633a7c4
LW
2094 sv_setpv(sv, "require '");
2095 sv_catpv(sv, pv);
2096 sv_catpv(sv, "'");
864dbfa3 2097 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2098 SPAGAIN;
2099 POPSTACK;
79072805
LW
2100}
2101
79072805 2102void
864dbfa3 2103Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2104{
2105 register GV *gv;
2106
155aba94 2107 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2108 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2109}
2110
76e3520e 2111STATIC void
cea2e8a9 2112S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2113{
ab821d7f 2114 /* This message really ought to be max 23 lines.
75c72d73 2115 * Removed -h because the user already knows that option. Others? */
fb73857a 2116
76e3520e 2117 static char *usage_msg[] = {
fb73857a
PP
2118"-0[octal] specify record separator (\\0, if no argument)",
2119"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2120"-C enable native wide character system interfaces",
1950ee41 2121"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2122"-d[:debugger] run program under debugger",
2123"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2124"-e 'command' one line of program (several -e's allowed, omit programfile)",
2125"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2126"-i[extension] edit <> files in place (makes backup if extension supplied)",
2127"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2128"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2129"-[mM][-]module execute `use/no module...' before executing program",
2130"-n assume 'while (<>) { ... }' loop around program",
2131"-p assume loop like -n but print line also, like sed",
2132"-P run program through C preprocessor before compilation",
2133"-s enable rudimentary parsing for switches after programfile",
2134"-S look for programfile using PATH environment variable",
2135"-T enable tainting checks",
2136"-u dump core after parsing program",
fb73857a 2137"-U allow unsafe operations",
aac3bd0d
GS
2138"-v print version, subversion (includes VERY IMPORTANT perl info)",
2139"-V[:variable] print configuration summary (or a single Config.pm variable)",
2140"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2141"-W enable all warnings",
2142"-X disable all warnings",
fb73857a
PP
2143"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2144"\n",
2145NULL
2146};
76e3520e 2147 char **p = usage_msg;
fb73857a 2148
b0e47665
GS
2149 PerlIO_printf(PerlIO_stdout(),
2150 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2151 name);
fb73857a 2152 while (*p)
b0e47665 2153 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2154}
2155
79072805
LW
2156/* This routine handles any switches that can be given during run */
2157
2158char *
864dbfa3 2159Perl_moreswitches(pTHX_ char *s)
79072805 2160{
ba210ebe 2161 STRLEN numlen;
c07a80fd 2162 U32 rschar;
79072805
LW
2163
2164 switch (*s) {
2165 case '0':
a863c7d1 2166 {
53305cf1
NC
2167 I32 flags = 0;
2168 numlen = 4;
2169 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2170 SvREFCNT_dec(PL_rs);
c07a80fd 2171 if (rschar & ~((U8)~0))
8bfdd7d9 2172 PL_rs = &PL_sv_undef;
c07a80fd 2173 else if (!rschar && numlen >= 2)
8bfdd7d9 2174 PL_rs = newSVpvn("", 0);
c07a80fd
PP
2175 else {
2176 char ch = rschar;
8bfdd7d9 2177 PL_rs = newSVpvn(&ch, 1);
79072805
LW
2178 }
2179 return s + numlen;
a863c7d1 2180 }
46487f74
GS
2181 case 'C':
2182 PL_widesyscalls = TRUE;
2183 s++;
2184 return s;
2304df62 2185 case 'F':
3280af22
NIS
2186 PL_minus_F = TRUE;
2187 PL_splitstr = savepv(s + 1);
2304df62
AD
2188 s += strlen(s);
2189 return s;
79072805 2190 case 'a':
3280af22 2191 PL_minus_a = TRUE;
79072805
LW
2192 s++;
2193 return s;
2194 case 'c':
3280af22 2195 PL_minus_c = TRUE;
79072805
LW
2196 s++;
2197 return s;
2198 case 'd':
bbce6d69 2199 forbid_setid("-d");
4633a7c4 2200 s++;
70c94a19
RR
2201 /* The following permits -d:Mod to accepts arguments following an =
2202 in the fashion that -MSome::Mod does. */
2203 if (*s == ':' || *s == '=') {
2204 char *start;
2205 SV *sv;
2206 sv = newSVpv("use Devel::", 0);
2207 start = ++s;
2208 /* We now allow -d:Module=Foo,Bar */
2209 while(isALNUM(*s) || *s==':') ++s;
2210 if (*s != '=')
2211 sv_catpv(sv, start);
2212 else {
2213 sv_catpvn(sv, start, s-start);
2214 sv_catpv(sv, " split(/,/,q{");
2215 sv_catpv(sv, ++s);
2216 sv_catpv(sv, "})");
2217 }
4633a7c4 2218 s += strlen(s);
70c94a19 2219 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2220 }
ed094faf 2221 if (!PL_perldb) {
3280af22 2222 PL_perldb = PERLDB_ALL;
a0d0e21e 2223 init_debugger();
ed094faf 2224 }
79072805
LW
2225 return s;
2226 case 'D':
0453d815 2227 {
79072805 2228#ifdef DEBUGGING
bbce6d69 2229 forbid_setid("-D");
79072805 2230 if (isALPHA(s[1])) {
04932ac8
DM
2231 /* if adding extra options, remember to update DEBUG_MASK */
2232 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW
2233 char *d;
2234
93a17b20 2235 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2236 PL_debug |= 1 << (d - debopts);
79072805
LW
2237 }
2238 else {
3280af22 2239 PL_debug = atoi(s+1);
79072805
LW
2240 for (s++; isDIGIT(*s); s++) ;
2241 }
aea4f609 2242 PL_debug |= DEBUG_TOP_FLAG;
79072805 2243#else
0453d815
PM
2244 if (ckWARN_d(WARN_DEBUGGING))
2245 Perl_warner(aTHX_ WARN_DEBUGGING,
2246 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2247 for (s++; isALNUM(*s); s++) ;
79072805
LW
2248#endif
2249 /*SUPPRESS 530*/
2250 return s;
0453d815 2251 }
4633a7c4 2252 case 'h':
ac27b0f5 2253 usage(PL_origargv[0]);
6ad3d225 2254 PerlProc_exit(0);
79072805 2255 case 'i':
3280af22
NIS
2256 if (PL_inplace)
2257 Safefree(PL_inplace);
2258 PL_inplace = savepv(s+1);
79072805 2259 /*SUPPRESS 530*/
3280af22 2260 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2261 if (*s) {
fb73857a 2262 *s++ = '\0';
7b8d334a
GS
2263 if (*s == '-') /* Additional switches on #! line. */
2264 s++;
2265 }
fb73857a
PP
2266 return s;
2267 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2268 forbid_setid("-I");
fb73857a
PP
2269 ++s;
2270 while (*s && isSPACE(*s))
2271 ++s;
2272 if (*s) {
774d564b 2273 char *e, *p;
0df16ed7
GS
2274 p = s;
2275 /* ignore trailing spaces (possibly followed by other switches) */
2276 do {
2277 for (e = p; *e && !isSPACE(*e); e++) ;
2278 p = e;
2279 while (isSPACE(*p))
2280 p++;
2281 } while (*p && *p != '-');
2282 e = savepvn(s, e-s);
9c8a64f0 2283 incpush(e, TRUE, TRUE);
0df16ed7
GS
2284 Safefree(e);
2285 s = p;
2286 if (*s == '-')
2287 s++;
79072805
LW
2288 }
2289 else
a67e862a 2290 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2291 return s;
79072805 2292 case 'l':
3280af22 2293 PL_minus_l = TRUE;
79072805 2294 s++;
7889fe52
NIS
2295 if (PL_ors_sv) {
2296 SvREFCNT_dec(PL_ors_sv);
2297 PL_ors_sv = Nullsv;
2298 }
79072805 2299 if (isDIGIT(*s)) {
53305cf1 2300 I32 flags = 0;
7889fe52 2301 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
2302 numlen = 3 + (*s == '0');
2303 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
2304 s += numlen;
2305 }
2306 else {
8bfdd7d9 2307 if (RsPARA(PL_rs)) {
7889fe52
NIS
2308 PL_ors_sv = newSVpvn("\n\n",2);
2309 }
2310 else {
8bfdd7d9 2311 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2312 }
79072805
LW
2313 }
2314 return s;
1a30305b 2315 case 'M':
bbce6d69 2316 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2317 /* FALL THROUGH */
2318 case 'm':
bbce6d69 2319 forbid_setid("-m"); /* XXX ? */
1a30305b 2320 if (*++s) {
a5f75d66 2321 char *start;
11343788 2322 SV *sv;
a5f75d66
AD
2323 char *use = "use ";
2324 /* -M-foo == 'no foo' */
2325 if (*s == '-') { use = "no "; ++s; }
11343788 2326 sv = newSVpv(use,0);
a5f75d66 2327 start = s;
1a30305b 2328 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2329 while(isALNUM(*s) || *s==':') ++s;
2330 if (*s != '=') {
11343788 2331 sv_catpv(sv, start);
c07a80fd
PP
2332 if (*(start-1) == 'm') {
2333 if (*s != '\0')
cea2e8a9 2334 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2335 sv_catpv( sv, " ()");
c07a80fd
PP
2336 }
2337 } else {
6df41af2 2338 if (s == start)
be98fb35
GS
2339 Perl_croak(aTHX_ "Module name required with -%c option",
2340 s[-1]);
11343788
MB
2341 sv_catpvn(sv, start, s-start);
2342 sv_catpv(sv, " split(/,/,q{");
2343 sv_catpv(sv, ++s);
2344 sv_catpv(sv, "})");
c07a80fd 2345 }
1a30305b 2346 s += strlen(s);
5c831c24 2347 if (!PL_preambleav)
3280af22
NIS
2348 PL_preambleav = newAV();
2349 av_push(PL_preambleav, sv);
1a30305b
PP
2350 }
2351 else
cea2e8a9 2352 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2353 return s;
79072805 2354 case 'n':
3280af22 2355 PL_minus_n = TRUE;
79072805
LW
2356 s++;
2357 return s;
2358 case 'p':
3280af22 2359 PL_minus_p = TRUE;
79072805
LW
2360 s++;
2361 return s;
2362 case 's':
bbce6d69 2363 forbid_setid("-s");
3280af22 2364 PL_doswitches = TRUE;
79072805
LW
2365 s++;
2366 return s;
463ee0b2 2367 case 'T':
3280af22 2368 if (!PL_tainting)
cea2e8a9 2369 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2370 s++;
2371 return s;
79072805 2372 case 'u':
bf4acbe4
GS
2373#ifdef MACOS_TRADITIONAL
2374 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2375#endif
3280af22 2376 PL_do_undump = TRUE;
79072805
LW
2377 s++;
2378 return s;
2379 case 'U':
3280af22 2380 PL_unsafe = TRUE;
79072805
LW
2381 s++;
2382 return s;
2383 case 'v':
8e9464f1 2384#if !defined(DGUX)
b0e47665 2385 PerlIO_printf(PerlIO_stdout(),
d2560b70 2386 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2387 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2388#else /* DGUX */
2389/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2390 PerlIO_printf(PerlIO_stdout(),
2391 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2392 PerlIO_printf(PerlIO_stdout(),
2393 Perl_form(aTHX_ " built under %s at %s %s\n",
2394 OSNAME, __DATE__, __TIME__));
2395 PerlIO_printf(PerlIO_stdout(),
2396 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2397 OSVERS));
8e9464f1
JH
2398#endif /* !DGUX */
2399
fb73857a
PP
2400#if defined(LOCAL_PATCH_COUNT)
2401 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2402 PerlIO_printf(PerlIO_stdout(),
2403 "\n(with %d registered patch%s, "
2404 "see perl -V for more detail)",
2405 (int)LOCAL_PATCH_COUNT,
2406 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2407#endif
1a30305b 2408
b0e47665 2409 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2410 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH
2411#ifdef MACOS_TRADITIONAL
2412 PerlIO_printf(PerlIO_stdout(),
084592ab 2413 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2414#endif
79072805 2415#ifdef MSDOS
b0e47665
GS
2416 PerlIO_printf(PerlIO_stdout(),
2417 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2418#endif
2419#ifdef DJGPP
b0e47665
GS
2420 PerlIO_printf(PerlIO_stdout(),
2421 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2422 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2423#endif
79072805 2424#ifdef OS2
b0e47665
GS
2425 PerlIO_printf(PerlIO_stdout(),
2426 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2427 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2428#endif
79072805 2429#ifdef atarist
b0e47665
GS
2430 PerlIO_printf(PerlIO_stdout(),
2431 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2432#endif
a3f9223b 2433#ifdef __BEOS__
b0e47665
GS
2434 PerlIO_printf(PerlIO_stdout(),
2435 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2436#endif
1d84e8df 2437#ifdef MPE
b0e47665 2438 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2439 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2440#endif
9d116dd7 2441#ifdef OEMVS
b0e47665
GS
2442 PerlIO_printf(PerlIO_stdout(),
2443 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2444#endif
495c5fdc 2445#ifdef __VOS__
b0e47665
GS
2446 PerlIO_printf(PerlIO_stdout(),
2447 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2448#endif
092bebab 2449#ifdef __OPEN_VM
b0e47665
GS
2450 PerlIO_printf(PerlIO_stdout(),
2451 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2452#endif
a1a0e61e 2453#ifdef POSIX_BC
b0e47665
GS
2454 PerlIO_printf(PerlIO_stdout(),
2455 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2456#endif
61ae2fbf 2457#ifdef __MINT__
b0e47665
GS
2458 PerlIO_printf(PerlIO_stdout(),
2459 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2460#endif
f83d2536 2461#ifdef EPOC
b0e47665
GS
2462 PerlIO_printf(PerlIO_stdout(),
2463 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2464#endif
e1caacb4
JH
2465#ifdef UNDER_CE
2466 printf("WINCE port by Rainer Keuchel, 2001\n");
2467 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2468 wce_hitreturn();
2469#endif
baed7233
DL
2470#ifdef BINARY_BUILD_NOTICE
2471 BINARY_BUILD_NOTICE;
2472#endif
b0e47665
GS
2473 PerlIO_printf(PerlIO_stdout(),
2474 "\n\
79072805 2475Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2476GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2477Complete documentation for Perl, including FAQ lists, should be found on\n\
2478this system using `man perl' or `perldoc perl'. If you have access to the\n\
2479Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2480 PerlProc_exit(0);
79072805 2481 case 'w':
599cee73 2482 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2483 PL_dowarn |= G_WARN_ON;
599cee73
PM
2484 s++;
2485 return s;
2486 case 'W':
ac27b0f5 2487 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2488 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2489 s++;
2490 return s;
2491 case 'X':
ac27b0f5 2492 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2493 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2494 s++;
2495 return s;
a0d0e21e 2496 case '*':
79072805
LW
2497 case ' ':
2498 if (s[1] == '-') /* Additional switches on #! line. */
2499 return s+2;
2500 break;
a0d0e21e 2501 case '-':
79072805 2502 case 0:
51882d45 2503#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2504 case '\r':
2505#endif
79072805
LW
2506 case '\n':
2507 case '\t':
2508 break;
aa689395
PP
2509#ifdef ALTERNATE_SHEBANG
2510 case 'S': /* OS/2 needs -S on "extproc" line. */
2511 break;
2512#endif
a0d0e21e 2513 case 'P':
3280af22 2514 if (PL_preprocess)
a0d0e21e
LW
2515 return s+1;
2516 /* FALL THROUGH */
79072805 2517 default:
cea2e8a9 2518 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2519 }
2520 return Nullch;
2521}
2522
2523/* compliments of Tom Christiansen */
2524
2525/* unexec() can be found in the Gnu emacs distribution */
ee580363 2526/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2527
2528void
864dbfa3 2529Perl_my_unexec(pTHX)
79072805
LW
2530{
2531#ifdef UNEXEC
46fc3d4c
PP
2532 SV* prog;
2533 SV* file;
ee580363 2534 int status = 1;
79072805
LW
2535 extern int etext;
2536
ee580363 2537 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2538 sv_catpv(prog, "/perl");
6b88bc9c 2539 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2540 sv_catpv(file, ".perldump");
79072805 2541
ee580363
GS
2542 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2543 /* unexec prints msg to stderr in case of failure */
6ad3d225 2544 PerlProc_exit(status);
79072805 2545#else
a5f75d66
AD
2546# ifdef VMS
2547# include <lib$routines.h>
2548 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2549# else
79072805 2550 ABORT(); /* for use with undump */
aa689395 2551# endif
a5f75d66 2552#endif
79072805
LW
2553}
2554
cb68f92d
GS
2555/* initialize curinterp */
2556STATIC void
cea2e8a9 2557S_init_interp(pTHX)
cb68f92d
GS
2558{
2559
acfe0abc
GS
2560#ifdef MULTIPLICITY
2561# define PERLVAR(var,type)
2562# define PERLVARA(var,n,type)
2563# if defined(PERL_IMPLICIT_CONTEXT)
2564# if defined(USE_5005THREADS)
2565# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2566# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
2567# else /* !USE_5005THREADS */
2568# define PERLVARI(var,type,init) aTHX->var = init;
2569# define PERLVARIC(var,type,init) aTHX->var = init;
2570# endif /* USE_5005THREADS */
3967c732 2571# else
acfe0abc
GS
2572# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2573# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2574# endif
acfe0abc
GS
2575# include "intrpvar.h"
2576# ifndef USE_5005THREADS
2577# include "thrdvar.h"
2578# endif
2579# undef PERLVAR
2580# undef PERLVARA
2581# undef PERLVARI
2582# undef PERLVARIC
2583#else
2584# define PERLVAR(var,type)
2585# define PERLVARA(var,n,type)
2586# define PERLVARI(var,type,init) PL_##var = init;
2587# define PERLVARIC(var,type,init) PL_##var = init;
2588# include "intrpvar.h"
2589# ifndef USE_5005THREADS
2590# include "thrdvar.h"
2591# endif
2592# undef PERLVAR
2593# undef PERLVARA
2594# undef PERLVARI
2595# undef PERLVARIC
cb68f92d
GS
2596#endif
2597
cb68f92d
GS
2598}
2599
76e3520e 2600STATIC void
cea2e8a9 2601S_init_main_stash(pTHX)
79072805 2602{
463ee0b2 2603 GV *gv;
6e72f9df 2604
3d47000e 2605
ac27b0f5 2606
3280af22 2607 PL_curstash = PL_defstash = newHV();
79cb57f6 2608 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2609 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2610 SvREFCNT_dec(GvHV(gv));
3280af22 2611 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2612 SvREADONLY_on(gv);
3280af22
NIS
2613 HvNAME(PL_defstash) = savepv("main");
2614 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2615 GvMULTI_on(PL_incgv);
2616 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2617 GvMULTI_on(PL_hintgv);
2618 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2619 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2620 GvMULTI_on(PL_errgv);
2621 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2622 GvMULTI_on(PL_replgv);
cea2e8a9 2623 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2624 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2625 sv_setpvn(ERRSV, "", 0);
3280af22 2626 PL_curstash = PL_defstash;
11faa288 2627 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2628 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2629 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2630 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2631 /* We must init $/ before switches are processed. */
864dbfa3 2632 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2633}
2634
76e3520e 2635STATIC void
cea2e8a9 2636S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2637{
6c4ab083 2638 *fdscript = -1;
79072805 2639
3280af22
NIS
2640 if (PL_e_script) {
2641 PL_origfilename = savepv("-e");
96436eeb 2642 }
6c4ab083
GS
2643 else {
2644 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2645 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2646
2647 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2648 char *s = scriptname + 8;
2649 *fdscript = atoi(s);
2650 while (isDIGIT(*s))
2651 s++;
2652 if (*s) {
2653 scriptname = savepv(s + 1);
3280af22
NIS
2654 Safefree(PL_origfilename);
2655 PL_origfilename = scriptname;
6c4ab083
GS
2656 }
2657 }
2658 }
2659
f4dd75d9
GS
2660#ifdef USE_ITHREADS
2661 Safefree(CopFILE(PL_curcop));
2662#else
2663 SvREFCNT_dec(CopFILEGV(PL_curcop));
2664#endif
57843af0 2665 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2666 if (strEQ(PL_origfilename,"-"))
79072805 2667 scriptname = "";
01f988be 2668 if (*fdscript >= 0) {
3280af22 2669 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2670#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2671 if (PL_rsfp)
2672 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2673#endif
2674 }
3280af22 2675 else if (PL_preprocess) {
46fc3d4c 2676 char *cpp_cfg = CPPSTDIN;
79cb57f6 2677 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2678 SV *cmd = NEWSV(0,0);
2679
2680 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2681 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2682 sv_catpv(cpp, cpp_cfg);
79072805 2683
0df16ed7 2684 sv_catpvn(sv, "-I", 2);
fed7345c 2685 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2686
14953ddc
MB
2687 DEBUG_P(PerlIO_printf(Perl_debug_log,
2688 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2689 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2690#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2691 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2692sed %s -e \"/^[^#]/b\" \
2693 -e \"/^#[ ]*include[ ]/b\" \
2694 -e \"/^#[ ]*define[ ]/b\" \
2695 -e \"/^#[ ]*if[ ]/b\" \
2696 -e \"/^#[ ]*ifdef[ ]/b\" \
2697 -e \"/^#[ ]*ifndef[ ]/b\" \
2698 -e \"/^#[ ]*else/b\" \
2699 -e \"/^#[ ]*elif[ ]/b\" \
2700 -e \"/^#[ ]*undef[ ]/b\" \
2701 -e \"/^#[ ]*endif/b\" \
2702 -e \"s/^#.*//\" \
894356b3 2703 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2704 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2705#else
092bebab 2706# ifdef __OPEN_VM
cea2e8a9 2707 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2708%s %s -e '/^[^#]/b' \
2709 -e '/^#[ ]*include[ ]/b' \
2710 -e '/^#[ ]*define[ ]/b' \
2711 -e '/^#[ ]*if[ ]/b' \
2712 -e '/^#[ ]*ifdef[ ]/b' \
2713 -e '/^#[ ]*ifndef[ ]/b' \
2714 -e '/^#[ ]*else/b' \
2715 -e '/^#[ ]*elif[ ]/b' \
2716 -e '/^#[ ]*undef[ ]/b' \
2717 -e '/^#[ ]*endif/b' \
2718 -e 's/^[ ]*#.*//' \
894356b3 2719 %s | %"SVf" %"SVf" %s",
092bebab 2720# else
cea2e8a9 2721 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2722%s %s -e '/^[^#]/b' \
2723 -e '/^#[ ]*include[ ]/b' \
2724 -e '/^#[ ]*define[ ]/b' \
2725 -e '/^#[ ]*if[ ]/b' \
2726 -e '/^#[ ]*ifdef[ ]/b' \
2727 -e '/^#[ ]*ifndef[ ]/b' \
2728 -e '/^#[ ]*else/b' \
2729 -e '/^#[ ]*elif[ ]/b' \
2730 -e '/^#[ ]*undef[ ]/b' \
2731 -e '/^#[ ]*endif/b' \
2732 -e 's/^[ ]*#.*//' \
894356b3 2733 %s | %"SVf" -C %"SVf" %s",
092bebab 2734# endif
79072805
LW
2735#ifdef LOC_SED
2736 LOC_SED,
2737#else
2738 "sed",
2739#endif
3280af22 2740 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2741#endif
46fc3d4c 2742 scriptname, cpp, sv, CPPMINUS);
3280af22 2743 PL_doextract = FALSE;
79072805 2744#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2745 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2746#ifdef HAS_SETEUID
b28d0864 2747 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2748#else
2749#ifdef HAS_SETREUID
b28d0864 2750 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2751#else
2752#ifdef HAS_SETRESUID
b28d0864 2753 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2754#else
b28d0864 2755 PerlProc_setuid(PL_uid);
79072805
LW
2756#endif
2757#endif
85e6fe83 2758#endif
b28d0864 2759 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2760 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2761 }
2762#endif /* IAMSUID */
3280af22 2763 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2764 SvREFCNT_dec(cmd);
2765 SvREFCNT_dec(cpp);
79072805
LW
2766 }
2767 else if (!*scriptname) {
bbce6d69 2768 forbid_setid("program input from stdin");
3280af22 2769 PL_rsfp = PerlIO_stdin();
79072805 2770 }
96436eeb 2771 else {
3280af22 2772 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2773#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2774 if (PL_rsfp)
2775 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2776#endif
2777 }
3280af22 2778 if (!PL_rsfp) {
13281fa4 2779#ifdef DOSUID
a687059c 2780#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2781 if (PL_euid &&
cc49e20b 2782 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2783 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2784 {
46fc3d4c 2785 /* try again */
a7cb1f99 2786 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2787 (int)PERL_REVISION, (int)PERL_VERSION,
2788 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2789 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2790 }
2791#endif
2792#endif
584d69ec
JH
2793#ifdef IAMSUID
2794 errno = EPERM;
2795 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2796 Strerror(errno));
2797#else
cea2e8a9 2798 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2799 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2800#endif
13281fa4 2801 }
79072805 2802}
8d063cd8 2803
7b89560d
JH
2804/* Mention
2805 * I_SYSSTATVFS HAS_FSTATVFS
2806 * I_SYSMOUNT
c890dc6c 2807 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2808 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2809 * here so that metaconfig picks them up. */
2810
104d25b7 2811#ifdef IAMSUID
864dbfa3 2812STATIC int
e688b231 2813S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2814{
0545a864
JH
2815 int check_okay = 0; /* able to do all the required sys/libcalls */
2816 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2817/*
ad27e871 2818 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2819 * fstatvfs() is UNIX98.
0545a864 2820 * fstatfs() is 4.3 BSD.
ad27e871 2821 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2822 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2823 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2824 */
2825
6439433f
JH
2826#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2827
2828# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2829 defined(HAS_FSTATVFS)
2830# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2831 struct statvfs stfs;
6439433f 2832
104d25b7
JH
2833 check_okay = fstatvfs(fd, &stfs) == 0;
2834 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2835# endif /* fstatvfs */
ac27b0f5 2836
6439433f
JH
2837# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2838 defined(PERL_MOUNT_NOSUID) && \
2839 defined(HAS_FSTATFS) && \
2840 defined(HAS_STRUCT_STATFS) && \
2841 defined(HAS_STRUCT_STATFS_F_FLAGS)
2842# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2843 struct statfs stfs;
6439433f 2844
104d25b7 2845 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2846 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2847# endif /* fstatfs */
2848
2849# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2850 defined(PERL_MOUNT_NOSUID) && \
2851 defined(HAS_FSTAT) && \
2852 defined(HAS_USTAT) && \
2853 defined(HAS_GETMNT) && \
2854 defined(HAS_STRUCT_FS_DATA) && \
2855 defined(NOSTAT_ONE)
2856# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2857 struct stat fdst;
6439433f 2858
0545a864 2859 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2860 struct ustat us;
2861 if (ustat(fdst.st_dev, &us) == 0) {
2862 struct fs_data fsd;
2863 /* NOSTAT_ONE here because we're not examining fields which
2864 * vary between that case and STAT_ONE. */
ad27e871 2865 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2866 size_t cmplen = sizeof(us.f_fname);
2867 if (sizeof(fsd.fd_req.path) < cmplen)
2868 cmplen = sizeof(fsd.fd_req.path);
2869 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2870 fdst.st_dev == fsd.fd_req.dev) {
2871 check_okay = 1;
2872 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2873 }
2874 }
2875 }
2876 }
0545a864 2877 }
6439433f
JH
2878# endif /* fstat+ustat+getmnt */
2879
2880# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2881 defined(HAS_GETMNTENT) && \
2882 defined(HAS_HASMNTOPT) && \
2883 defined(MNTOPT_NOSUID)
2884# define FD_ON_NOSUID_CHECK_OKAY
2885 FILE *mtab = fopen("/etc/mtab", "r");
2886 struct mntent *entry;
2887 struct stat stb, fsb;
104d25b7
JH
2888
2889 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2890 while (entry = getmntent(mtab)) {
2891 if (stat(entry->mnt_dir, &fsb) == 0
2892 && fsb.st_dev == stb.st_dev)
2893 {
2894 /* found the filesystem */
2895 check_okay = 1;
2896 if (hasmntopt(entry, MNTOPT_NOSUID))
2897 on_nosuid = 1;
2898 break;
2899 } /* A single fs may well fail its stat(). */
2900 }
104d25b7
JH
2901 }
2902 if (mtab)
6439433f
JH
2903 fclose(mtab);
2904# endif /* getmntent+hasmntopt */
0545a864 2905
ac27b0f5 2906 if (!check_okay)
0545a864 2907 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2908 return on_nosuid;
2909}
2910#endif /* IAMSUID */
2911
76e3520e 2912STATIC void
cea2e8a9 2913S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2914{
155aba94 2915#ifdef IAMSUID
96436eeb 2916 int which;
155aba94 2917#endif
96436eeb 2918
13281fa4
LW
2919 /* do we need to emulate setuid on scripts? */
2920
2921 /* This code is for those BSD systems that have setuid #! scripts disabled
2922 * in the kernel because of a security problem. Merely defining DOSUID
2923 * in perl will not fix that problem, but if you have disabled setuid
2924 * scripts in the kernel, this will attempt to emulate setuid and setgid
2925 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2926 * root version must be called suidperl or sperlN.NNN. If regular perl
2927 * discovers that it has opened a setuid script, it calls suidperl with
2928 * the same argv that it had. If suidperl finds that the script it has
2929 * just opened is NOT setuid root, it sets the effective uid back to the
2930 * uid. We don't just make perl setuid root because that loses the
2931 * effective uid we had before invoking perl, if it was different from the
2932 * uid.
13281fa4
LW
2933 *
2934 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2935 * be defined in suidperl only. suidperl must be setuid root. The
2936 * Configure script will set this up for you if you want it.
2937 */
a687059c 2938
13281fa4 2939#ifdef DOSUID
6e72f9df 2940 char *s, *s2;
a0d0e21e 2941
b28d0864 2942 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2943 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2944 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2945 I32 len;
2d8e6c8d 2946 STRLEN n_a;
13281fa4 2947
a687059c 2948#ifdef IAMSUID
fe14fcc3 2949#ifndef HAS_SETREUID
a687059c
LW
2950 /* On this access check to make sure the directories are readable,
2951 * there is actually a small window that the user could use to make
2952 * filename point to an accessible directory. So there is a faint
2953 * chance that someone could execute a setuid script down in a
2954 * non-accessible directory. I don't know what to do about that.
2955 * But I don't think it's too important. The manual lies when
2956 * it says access() is useful in setuid programs.
2957 */
cc49e20b 2958 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2959 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2960#else
2961 /* If we can swap euid and uid, then we can determine access rights
2962 * with a simple stat of the file, and then compare device and
2963 * inode to make sure we did stat() on the same file we opened.
2964 * Then we just have to make sure he or she can execute it.
2965 */
2966 {
2967 struct stat tmpstatbuf;
2968
85e6fe83
LW
2969 if (
2970#ifdef HAS_SETREUID
b28d0864 2971 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2972#else
2973# if HAS_SETRESUID
b28d0864 2974 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2975# endif
85e6fe83 2976#endif
b28d0864 2977 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2978 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2979 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2980 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2981#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2982 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2983 Perl_croak(aTHX_ "Permission denied");
104d25b7 2984#endif
b28d0864
NIS
2985 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2986 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2987 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2988 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2989 }
85e6fe83
LW
2990 if (
2991#ifdef HAS_SETREUID
b28d0864 2992 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
2993#else
2994# if defined(HAS_SETRESUID)
b28d0864 2995 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2996# endif
85e6fe83 2997#endif
b28d0864 2998 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2999 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3000 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3001 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3002 }
fe14fcc3 3003#endif /* HAS_SETREUID */
a687059c
LW
3004#endif /* IAMSUID */
3005
b28d0864 3006 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3007 Perl_croak(aTHX_ "Permission denied");
b28d0864 3008 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3009 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3010 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3011 CopLINE_inc(PL_curcop);
6b88bc9c 3012 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3013 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3014 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3015 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3016 if (*s == ' ') s++;
45d8adaa 3017 while (!isSPACE(*s)) s++;
2d8e6c8d 3018 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
3019 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3020 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3021 Perl_croak(aTHX_ "Not a perl script");
a687059c 3022 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
3023 /*
3024 * #! arg must be what we saw above. They can invoke it by
3025 * mentioning suidperl explicitly, but they may not add any strange
3026 * arguments beyond what #! says if they do invoke suidperl that way.
3027 */
3028 len = strlen(validarg);
3029 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3030 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3031 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
3032
3033#ifndef IAMSUID
b28d0864
NIS
3034 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3035 PL_euid == PL_statbuf.st_uid)
3036 if (!PL_do_undump)
cea2e8a9 3037 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3038FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3039#endif /* IAMSUID */
13281fa4 3040
b28d0864
NIS
3041 if (PL_euid) { /* oops, we're not the setuid root perl */
3042 (void)PerlIO_close(PL_rsfp);
13281fa4 3043#ifndef IAMSUID
46fc3d4c 3044 /* try again */
a7cb1f99 3045 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3046 (int)PERL_REVISION, (int)PERL_VERSION,
3047 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3048#endif
cea2e8a9 3049 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
3050 }
3051
b28d0864 3052 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3053#ifdef HAS_SETEGID
b28d0864 3054 (void)setegid(PL_statbuf.st_gid);
a687059c 3055#else
fe14fcc3 3056#ifdef HAS_SETREGID
b28d0864 3057 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3058#else
3059#ifdef HAS_SETRESGID
b28d0864 3060 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3061#else
b28d0864 3062 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3063#endif
3064#endif
85e6fe83 3065#endif
b28d0864 3066 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3067 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3068 }
b28d0864
NIS
3069 if (PL_statbuf.st_mode & S_ISUID) {
3070 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3071#ifdef HAS_SETEUID
b28d0864 3072 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3073#else
fe14fcc3 3074#ifdef HAS_SETREUID
b28d0864 3075 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3076#else
3077#ifdef HAS_SETRESUID
b28d0864 3078 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3079#else
b28d0864 3080 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3081#endif
3082#endif
85e6fe83 3083#endif
b28d0864 3084 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3085 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3086 }
b28d0864 3087 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3088#ifdef HAS_SETEUID
b28d0864 3089 (void)seteuid((Uid_t)PL_uid);
a687059c 3090#else
fe14fcc3 3091#ifdef HAS_SETREUID
b28d0864 3092 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3093#else
85e6fe83 3094#ifdef HAS_SETRESUID
b28d0864 3095 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3096#else
b28d0864 3097 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3098#endif
a687059c
LW
3099#endif
3100#endif
b28d0864 3101 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3102 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3103 }
748a9306 3104 init_ids();
b28d0864 3105 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3106 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3107 }
3108#ifdef IAMSUID
6b88bc9c 3109 else if (PL_preprocess)
cea2e8a9 3110 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3111 else if (fdscript >= 0)
cea2e8a9 3112 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3113 else
cea2e8a9 3114 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3115
3116 /* We absolutely must clear out any saved ids here, so we */
3117 /* exec the real perl, substituting fd script for scriptname. */
3118 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3119 PerlIO_rewind(PL_rsfp);
3120 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3121 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3122 if (!PL_origargv[which])
cea2e8a9
GS
3123 Perl_croak(aTHX_ "Permission denied");
3124 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3125 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3126#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3127 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3128#endif
a7cb1f99 3129 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3130 (int)PERL_REVISION, (int)PERL_VERSION,
3131 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3132 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3133#endif /* IAMSUID */
a687059c 3134#else /* !DOSUID */
3280af22 3135 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3136#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3137 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3138 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3139 ||
b28d0864 3140 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3141 )
b28d0864 3142 if (!PL_do_undump)
cea2e8a9 3143 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3144FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3145#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3146 /* not set-id, must be wrapped */
a687059c 3147 }
13281fa4 3148#endif /* DOSUID */
79072805 3149}
13281fa4 3150
76e3520e 3151STATIC void
cea2e8a9 3152S_find_beginning(pTHX)
79072805 3153{
6e72f9df 3154 register char *s, *s2;
33b78306
LW
3155
3156 /* skip forward in input to the real script? */
3157
bbce6d69 3158 forbid_setid("-x");
bf4acbe4 3159#ifdef MACOS_TRADITIONAL
084592ab 3160 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3161
bf4acbe4
GS
3162 while (PL_doextract || gMacPerl_AlwaysExtract) {
3163 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3164 if (!gMacPerl_AlwaysExtract)
3165 Perl_croak(aTHX_ "No Perl script found in input\n");
3166
3167 if (PL_doextract) /* require explicit override ? */
3168 if (!OverrideExtract(PL_origfilename))
3169 Perl_croak(aTHX_ "User aborted script\n");
3170 else
3171 PL_doextract = FALSE;
3172
3173 /* Pater peccavi, file does not have #! */
3174 PerlIO_rewind(PL_rsfp);
ac27b0f5 3175
bf4acbe4
GS
3176 break;
3177 }
3178#else
3280af22
NIS
3179 while (PL_doextract) {
3180 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3181 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3182#endif
4f0c37ba
IZ
3183 s2 = s;
3184 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS
3185 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3186 PL_doextract = FALSE;
6e72f9df
PP
3187 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3188 s2 = s;
3189 while (*s == ' ' || *s == '\t') s++;
3190 if (*s++ == '-') {
3191 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3192 if (strnEQ(s2-4,"perl",4))
3193 /*SUPPRESS 530*/
155aba94
GS
3194 while ((s = moreswitches(s)))
3195 ;
33b78306 3196 }
95e8664e
CN
3197#ifdef MACOS_TRADITIONAL
3198 break;
3199#endif
83025b21
LW
3200 }
3201 }
3202}
3203
afe37c7d 3204
76e3520e 3205STATIC void
cea2e8a9 3206S_init_ids(pTHX)
352d5a3a 3207{
d8eceb89
JH
3208 PL_uid = PerlProc_getuid();
3209 PL_euid = PerlProc_geteuid();
3210 PL_gid = PerlProc_getgid();
3211 PL_egid = PerlProc_getegid();
748a9306 3212#ifdef VMS
b28d0864
NIS
3213 PL_uid |= PL_gid << 16;
3214 PL_euid |= PL_egid << 16;
748a9306 3215#endif
3280af22 3216 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3217}
79072805 3218
76e3520e 3219STATIC void
cea2e8a9 3220S_forbid_setid(pTHX_ char *s)
bbce6d69 3221{
3280af22 3222 if (PL_euid != PL_uid)
cea2e8a9 3223 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3224 if (PL_egid != PL_gid)
cea2e8a9 3225 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3226}
3227
1ee4443e
IZ
3228void
3229Perl_init_debugger(pTHX)
748a9306 3230{
1ee4443e
IZ
3231 HV *ostash = PL_curstash;
3232
3280af22
NIS
3233 PL_curstash = PL_debstash;
3234 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3235 AvREAL_off(PL_dbargs);
3236 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3237 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3238 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3239 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3240 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3241 sv_setiv(PL_DBsingle, 0);
3280af22 3242 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3243 sv_setiv(PL_DBtrace, 0);
3280af22 3244 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3245 sv_setiv(PL_DBsignal, 0);
1ee4443e 3246 PL_curstash = ostash;
352d5a3a
LW
3247}
3248
2ce36478
SM
3249#ifndef STRESS_REALLOC
3250#define REASONABLE(size) (size)
3251#else
3252#define REASONABLE(size) (1) /* unreasonable */
3253#endif
3254
11343788 3255void
cea2e8a9 3256Perl_init_stacks(pTHX)
79072805 3257{
e336de0d 3258 /* start with 128-item stack and 8K cxstack */
3280af22 3259 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3260 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3261 PL_curstackinfo->si_type = PERLSI_MAIN;
3262 PL_curstack = PL_curstackinfo->si_stack;
3263 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3264
3280af22
NIS
3265 PL_stack_base = AvARRAY(PL_curstack);
3266 PL_stack_sp = PL_stack_base;
3267 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3268
3280af22
NIS
3269 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3270 PL_tmps_floor = -1;
3271 PL_tmps_ix = -1;
3272 PL_tmps_max = REASONABLE(128);
8990e307 3273
3280af22
NIS
3274 New(54,PL_markstack,REASONABLE(32),I32);
3275 PL_markstack_ptr = PL_markstack;
3276 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3277
ce2f7c3b 3278 SET_MARK_OFFSET;
e336de0d 3279
3280af22
NIS
3280 New(54,PL_scopestack,REASONABLE(32),I32);
3281 PL_scopestack_ix = 0;
3282 PL_scopestack_max = REASONABLE(32);
79072805 3283
3280af22
NIS
3284 New(54,PL_savestack,REASONABLE(128),ANY);
3285 PL_savestack_ix = 0;
3286 PL_savestack_max = REASONABLE(128);
79072805 3287
3280af22
NIS
3288 New(54,PL_retstack,REASONABLE(16),OP*);
3289 PL_retstack_ix = 0;
3290 PL_retstack_max = REASONABLE(16);
378cc40b 3291}
33b78306 3292
2ce36478
SM
3293#undef REASONABLE
3294
76e3520e 3295STATIC void
cea2e8a9 3296S_nuke_stacks(pTHX)
6e72f9df 3297{
3280af22
NIS
3298 while (PL_curstackinfo->si_next)
3299 PL_curstackinfo = PL_curstackinfo->si_next;
3300 while (PL_curstackinfo) {
3301 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3302 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3303 Safefree(PL_curstackinfo->si_cxstack);
3304 Safefree(PL_curstackinfo);
3305 PL_curstackinfo = p;
e336de0d 3306 }
3280af22
NIS
3307 Safefree(PL_tmps_stack);
3308 Safefree(PL_markstack);
3309 Safefree(PL_scopestack);
3310 Safefree(PL_savestack);
3311 Safefree(PL_retstack);
378cc40b 3312}
33b78306 3313
76e3520e 3314STATIC void
cea2e8a9 3315S_init_lexer(pTHX)
8990e307 3316{
06039172 3317 PerlIO *tmpfp;
3280af22
NIS
3318 tmpfp = PL_rsfp;
3319 PL_rsfp = Nullfp;
3320 lex_start(PL_linestr);
3321 PL_rsfp = tmpfp;
79cb57f6 3322 PL_subname = newSVpvn("main",4);
8990e307
LW
3323}
3324
76e3520e 3325STATIC void
cea2e8a9 3326S_init_predump_symbols(pTHX)
45d8adaa 3327{
93a17b20 3328 GV *tmpgv;
af8c498a 3329 IO *io;
79072805 3330
864dbfa3 3331 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3332 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3333 GvMULTI_on(PL_stdingv);
af8c498a 3334 io = GvIOp(PL_stdingv);
a04651f4 3335 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3336 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3337 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3338 GvMULTI_on(tmpgv);
af8c498a 3339 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3340
85e6fe83 3341 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3342 GvMULTI_on(tmpgv);
af8c498a 3343 io = GvIOp(tmpgv);
a04651f4 3344 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3345 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3346 setdefout(tmpgv);
adbc6bb1 3347 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3348 GvMULTI_on(tmpgv);
af8c498a 3349 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3350
bf49b057
GS
3351 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3352 GvMULTI_on(PL_stderrgv);
3353 io = GvIOp(PL_stderrgv);
a04651f4 3354 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3355 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3356 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3357 GvMULTI_on(tmpgv);
af8c498a 3358 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3359
3280af22 3360 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3361
bf4acbe4
GS
3362 if (PL_osname)
3363 Safefree(PL_osname);
3364 PL_osname = savepv(OSNAME);
79072805 3365}
33b78306 3366
76e3520e 3367STATIC void
cea2e8a9 3368S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3369{
79072805
LW
3370 char *s;
3371 SV *sv;
3372 GV* tmpgv;
9cbac4c7 3373#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3374 char **dup_env_base = 0;
103a7189 3375 int dup_env_count = 0;
9cbac4c7 3376#endif
fe14fcc3 3377
79072805 3378 argc--,argv++; /* skip name of script */
3280af22 3379 if (PL_doswitches) {
79072805
LW
3380 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3381 if (!argv[0][1])
3382 break;
379d538a 3383 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3384 argc--,argv++;
3385 break;
3386 }
155aba94 3387 if ((s = strchr(argv[0], '='))) {
79072805 3388 *s++ = '\0';
85e6fe83 3389 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3390 }
3391 else
85e6fe83 3392 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3393 }
79072805 3394 }
3280af22
NIS
3395 PL_toptarget = NEWSV(0,0);
3396 sv_upgrade(PL_toptarget, SVt_PVFM);
3397 sv_setpvn(PL_toptarget, "", 0);
3398 PL_bodytarget = NEWSV(0,0);
3399 sv_upgrade(PL_bodytarget, SVt_PVFM);
3400 sv_setpvn(PL_bodytarget, "", 0);
3401 PL_formtarget = PL_bodytarget;
79072805 3402
bbce6d69 3403 TAINT;
155aba94 3404 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3405#ifdef MACOS_TRADITIONAL
3406 /* $0 is not majick on a Mac */
3407 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3408#else
3280af22 3409 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3410 magicname("0", "0", 1);
bf4acbe4 3411#endif
79072805 3412 }
155aba94 3413 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3414#ifdef OS2
23da6c43 3415 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3416#else
3280af22 3417 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3418#endif
155aba94 3419 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3420 GvMULTI_on(PL_argvgv);
3421 (void)gv_AVadd(PL_argvgv);
3422 av_clear(GvAVn(PL_argvgv));
79072805 3423 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3424 SV *sv = newSVpv(argv[0],0);
3425 av_push(GvAVn(PL_argvgv),sv);
3426 if (PL_widesyscalls)
e84ff256 3427 (void)sv_utf8_decode(sv);
79072805
LW
3428 }
3429 }
155aba94 3430 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3431 HV *hv;
3280af22
NIS
3432 GvMULTI_on(PL_envgv);
3433 hv = GvHVn(PL_envgv);
14befaf4 3434 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3435#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW
3436 /* Note that if the supplied env parameter is actually a copy
3437 of the global environ then it may now point to free'd memory
3438 if the environment has been modified since. To avoid this
3439 problem we treat env==NULL as meaning 'use the default'
3440 */
3441 if (!env)
3442 env = environ;
5aabfad6 3443 if (env != environ)
79072805 3444 environ[0] = Nullch;
103a7189
JH
3445#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3446 {
3447 char **env_base;
9041c2e3 3448 for (env_base = env; *env; env++)
103a7189
JH
3449 dup_env_count++;
3450 if ((dup_env_base = (char **)
480bfd1e 3451 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH
3452 char **dup_env;
3453 for (env = env_base, dup_env = dup_env_base;
3454 *env;
480bfd1e
JH
3455 env++, dup_env++) {
3456 /* With environ one needs to use safesysmalloc(). */
3457 *dup_env = safesysmalloc(strlen(*env) + 1);
3458 (void)strcpy(*dup_env, *env);