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a0d0e21e
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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
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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
0cb96387
GS
28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
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
873ef191 42#ifdef PERL_OBJECT
7766f137
GS
43#define perl_construct Perl_construct
44#define perl_parse Perl_parse
45#define perl_run Perl_run
46#define perl_destruct Perl_destruct
47#define perl_free Perl_free
48#endif
32e30700 49
06d86050
GS
50#if defined(USE_THREADS)
51# define INIT_TLS_AND_INTERP \
52 STMT_START { \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
55 INIT_THREADS; \
56 ALLOC_THREAD_KEY; \
57 } \
58 } STMT_END
59#else
60# if defined(USE_ITHREADS)
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
534825c4
GS
67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050
GS
73 } STMT_END
74# else
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
83#endif
84
32e30700
GS
85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
7766f137
GS
87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
7766f137
GS
94#ifdef PERL_OBJECT
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
06d86050 97 INIT_TLS_AND_INTERP;
7766f137 98#else
32e30700
GS
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 101 INIT_TLS_AND_INTERP;
32e30700
GS
102 Zero(my_perl, 1, PerlInterpreter);
103 PL_Mem = ipM;
7766f137
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104 PL_MemShared = ipMS;
105 PL_MemParse = ipMP;
32e30700
GS
106 PL_Env = ipE;
107 PL_StdIO = ipStd;
108 PL_LIO = ipLIO;
109 PL_Dir = ipD;
110 PL_Sock = ipS;
111 PL_Proc = ipP;
7766f137
GS
112#endif
113
32e30700
GS
114 return my_perl;
115}
116#else
954c1994
GS
117
118/*
119=for apidoc perl_alloc
120
121Allocates a new Perl interpreter. See L<perlembed>.
122
123=cut
124*/
125
93a17b20 126PerlInterpreter *
cea2e8a9 127perl_alloc(void)
79072805 128{
cea2e8a9 129 PerlInterpreter *my_perl;
79072805 130
54aff467 131 /* New() needs interpreter, so call malloc() instead */
e8ee3774 132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 133
06d86050 134 INIT_TLS_AND_INTERP;
dedcbb81 135 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 136 return my_perl;
79072805 137}
32e30700 138#endif /* PERL_IMPLICIT_SYS */
79072805 139
954c1994
GS
140/*
141=for apidoc perl_construct
142
143Initializes a new Perl interpreter. See L<perlembed>.
144
145=cut
146*/
147
79072805 148void
0cb96387 149perl_construct(pTHXx)
79072805 150{
a863c7d1 151#ifdef USE_THREADS
a863c7d1 152#ifndef FAKE_THREADS
e1f15930 153 struct perl_thread *thr = NULL;
a863c7d1
MB
154#endif /* FAKE_THREADS */
155#endif /* USE_THREADS */
ba869deb 156
8990e307 157#ifdef MULTIPLICITY
54aff467 158 init_interp();
ac27b0f5 159 PL_perl_destruct_level = 1;
54aff467
GS
160#else
161 if (PL_perl_destruct_level > 0)
162 init_interp();
163#endif
164
33f46ff6 165 /* Init the real globals (and main thread)? */
3280af22 166 if (!PL_linestr) {
1feb2720 167#ifdef USE_THREADS
533c011a 168 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
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169 /*
170 * Safe to use basic SV functions from now on (though
171 * not things like mortals or tainting yet).
172 */
533c011a
NIS
173 MUTEX_INIT(&PL_eval_mutex);
174 COND_INIT(&PL_eval_cond);
175 MUTEX_INIT(&PL_threads_mutex);
176 COND_INIT(&PL_nthreads_cond);
ba869deb 177# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 178 MUTEX_INIT(&PL_svref_mutex);
ba869deb 179# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 180
5ff3f7a4 181 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS
182 MUTEX_INIT(&PL_sv_lock_mutex);
183 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 184
199100c8 185 thr = init_main_thread();
11343788
MB
186#endif /* USE_THREADS */
187
14dd3ad8 188#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 189 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 190#endif
312caa8e 191
2aea9f8a
GS
192 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193
3280af22
NIS
194 PL_linestr = NEWSV(65,79);
195 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 196
3280af22 197 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
198 /* set read-only and try to insure than we wont see REFCNT==0
199 very often */
200
3280af22
NIS
201 SvREADONLY_on(&PL_sv_undef);
202 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 203
3280af22
NIS
204 sv_setpv(&PL_sv_no,PL_No);
205 SvNV(&PL_sv_no);
206 SvREADONLY_on(&PL_sv_no);
207 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 208
3280af22
NIS
209 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvNV(&PL_sv_yes);
211 SvREADONLY_on(&PL_sv_yes);
212 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 213 }
79072805 214
76e3520e
GS
215#ifdef PERL_OBJECT
216 /* TODO: */
6b88bc9c 217 /* PL_sighandlerp = sighandler; */
76e3520e 218#else
cea2e8a9 219 PL_sighandlerp = Perl_sighandler;
76e3520e 220#endif
3280af22 221 PL_pidstatus = newHV();
44a8e56a 222
79072805
LW
223#ifdef MSDOS
224 /*
225 * There is no way we can refer to them from Perl so close them to save
226 * space. The other alternative would be to provide STDAUX and STDPRN
227 * filehandles.
228 */
2b96b0a5
JH
229 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
230 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW
231#endif
232 }
233
79cb57f6 234 PL_nrs = newSVpvn("\n", 1);
3280af22 235 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 236
cea2e8a9 237 init_stacks();
79072805 238
748a9306 239 init_ids();
3280af22 240 PL_lex_state = LEX_NOTPARSING;
a5f75d66 241
312caa8e 242 JMPENV_BOOTSTRAP;
f86702cc
PP
243 STATUS_ALL_SUCCESS;
244
0672f40e 245 init_i18nl10n(1);
36477c24 246 SET_NUMERIC_STANDARD();
0b5b802d 247
a7cb1f99
GS
248 {
249 U8 *s;
250 PL_patchlevel = NEWSV(0,4);
155aba94 251 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 252 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 253 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 254 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS
255 /* Build version strings using "native" characters */
256 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
257 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
258 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS
259 *s = '\0';
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 264#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 265 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 266#endif
a7cb1f99
GS
267 ;
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
271 }
79072805 272
ab821d7f 273#if defined(LOCAL_PATCH_COUNT)
3280af22 274 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
275#endif
276
52853b95
GS
277#ifdef HAVE_INTERP_INTERN
278 sys_intern_init();
279#endif
280
4b556e6c 281 PerlIO_init(); /* Hook to IO system */
760ac839 282
3280af22
NIS
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 285 PL_errors = newSVpvn("",0);
1fcf4c12
AB
286#ifdef USE_ITHREADS
287 PL_regex_padav = newAV();
288#endif
e5dd39fc
AB
289#ifdef USE_REENTRANT_API
290 New(31337, PL_reentrant_buffer,1, REBUF);
291 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
292#endif
8990e307 293 ENTER;
79072805
LW
294}
295
954c1994
GS
296/*
297=for apidoc perl_destruct
298
299Shuts down a Perl interpreter. See L<perlembed>.
300
301=cut
302*/
303
79072805 304void
0cb96387 305perl_destruct(pTHXx)
79072805 306{
748a9306 307 int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 308 HV *hv;
1f2bfc8a 309#ifdef USE_THREADS
33f46ff6 310 Thread t;
cea2e8a9 311 dTHX;
1f2bfc8a 312#endif /* USE_THREADS */
8990e307 313
7766f137
GS
314 /* wait for all pseudo-forked children to finish */
315 PERL_WAIT_FOR_CHILDREN;
316
11343788 317#ifdef USE_THREADS
0f15f207 318#ifndef FAKE_THREADS
8023c3ce
MB
319 /* Pass 1 on any remaining threads: detach joinables, join zombies */
320 retry_cleanup:
533c011a 321 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 322 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 323 "perl_destruct: waiting for %d threads...\n",
533c011a 324 PL_nthreads - 1));
33f46ff6 325 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB
326 MUTEX_LOCK(&t->mutex);
327 switch (ThrSTATE(t)) {
328 AV *av;
c7848ba1 329 case THRf_ZOMBIE:
bf49b057 330 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 331 "perl_destruct: joining zombie %p\n", t));
605e5515
MB
332 ThrSETSTATE(t, THRf_DEAD);
333 MUTEX_UNLOCK(&t->mutex);
533c011a 334 PL_nthreads--;
8023c3ce
MB
335 /*
336 * The SvREFCNT_dec below may take a long time (e.g. av
337 * may contain an object scalar whose destructor gets
338 * called) so we have to unlock threads_mutex and start
339 * all over again.
340 */
533c011a 341 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 342 JOIN(t, &av);
605e5515 343 SvREFCNT_dec((SV*)av);
bf49b057 344 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 345 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 346 goto retry_cleanup;
c7848ba1 347 case THRf_R_JOINABLE:
bf49b057 348 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
349 "perl_destruct: detaching thread %p\n", t));
350 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 351 /*
c7848ba1
MB
352 * We unlock threads_mutex and t->mutex in the opposite order
353 * from which we locked them just so that DETACH won't
354 * deadlock if it panics. It's only a breach of good style
355 * not a bug since they are unlocks not locks.
356 */
533c011a 357 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB
358 DETACH(t);
359 MUTEX_UNLOCK(&t->mutex);
8023c3ce 360 goto retry_cleanup;
c7848ba1 361 default:
bf49b057 362 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
363 "perl_destruct: ignoring %p (state %u)\n",
364 t, ThrSTATE(t)));
365 MUTEX_UNLOCK(&t->mutex);
c7848ba1 366 /* fall through and out */
33f46ff6
MB
367 }
368 }
8023c3ce
MB
369 /* We leave the above "Pass 1" loop with threads_mutex still locked */
370
371 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 372 while (PL_nthreads > 1)
11343788 373 {
bf49b057 374 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 375 "perl_destruct: final wait for %d threads\n",
533c011a
NIS
376 PL_nthreads - 1));
377 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB
378 }
379 /* At this point, we're the last thread */
533c011a 380 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 381 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS
382 MUTEX_DESTROY(&PL_threads_mutex);
383 COND_DESTROY(&PL_nthreads_cond);
b57a092c 384 PL_nthreads--;
0f15f207 385#endif /* !defined(FAKE_THREADS) */
11343788
MB
386#endif /* USE_THREADS */
387
3280af22 388 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
389#ifdef DEBUGGING
390 {
391 char *s;
155aba94 392 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc
PP
393 int i = atoi(s);
394 if (destruct_level < i)
395 destruct_level = i;
396 }
4633a7c4
LW
397 }
398#endif
399
8990e307 400 LEAVE;
a0d0e21e
LW
401 FREETMPS;
402
13621cfb 403
ff0cee69
PP
404 /* We must account for everything. */
405
406 /* Destroy the main CV and syntax tree */
3280af22
NIS
407 if (PL_main_root) {
408 PL_curpad = AvARRAY(PL_comppad);
409 op_free(PL_main_root);
410 PL_main_root = Nullop;
a0d0e21e 411 }
3280af22
NIS
412 PL_curcop = &PL_compiling;
413 PL_main_start = Nullop;
414 SvREFCNT_dec(PL_main_cv);
415 PL_main_cv = Nullcv;
24d3c518 416 PL_dirty = TRUE;
ff0cee69 417
13621cfb
NIS
418 /* Tell PerlIO we are about to tear things apart in case
419 we have layers which are using resources that should
420 be cleaned up now.
421 */
422
423 PerlIO_destruct(aTHX);
424
3280af22 425 if (PL_sv_objcount) {
a0d0e21e
LW
426 /*
427 * Try to destruct global references. We do this first so that the
428 * destructors and destructees still exist. Some sv's might remain.
429 * Non-referenced objects are on their own.
430 */
a0d0e21e 431 sv_clean_objs();
8990e307
LW
432 }
433
5cd24f17 434 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
435 SvREFCNT_dec(PL_warnhook);
436 PL_warnhook = Nullsv;
437 SvREFCNT_dec(PL_diehook);
438 PL_diehook = Nullsv;
5cd24f17 439
4b556e6c 440 /* call exit list functions */
3280af22 441 while (PL_exitlistlen-- > 0)
0cb96387 442 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 443
3280af22 444 Safefree(PL_exitlist);
4b556e6c 445
a0d0e21e 446 if (destruct_level == 0){
8990e307 447
a0d0e21e 448 DEBUG_P(debprofdump());
ac27b0f5 449
a0d0e21e
LW
450 /* The exit() function will do everything that needs doing. */
451 return;
452 }
5dd60ef7 453
551a8b83
JH
454 /* jettison our possibly duplicated environment */
455
456#ifdef USE_ENVIRON_ARRAY
457 if (environ != PL_origenviron) {
458 I32 i;
459
460 for (i = 0; environ[i]; i++)
4b420006
JH
461 safesysfree(environ[i]);
462 /* Must use safesysfree() when working with environ. */
463 safesysfree(environ);
551a8b83
JH
464
465 environ = PL_origenviron;
466 }
467#endif
468
5f05dabc
PP
469 /* loosen bonds of global variables */
470
3280af22
NIS
471 if(PL_rsfp) {
472 (void)PerlIO_close(PL_rsfp);
473 PL_rsfp = Nullfp;
8ebc5c01
PP
474 }
475
476 /* Filters for program text */
3280af22
NIS
477 SvREFCNT_dec(PL_rsfp_filters);
478 PL_rsfp_filters = Nullav;
8ebc5c01
PP
479
480 /* switches */
3280af22
NIS
481 PL_preprocess = FALSE;
482 PL_minus_n = FALSE;
483 PL_minus_p = FALSE;
484 PL_minus_l = FALSE;
485 PL_minus_a = FALSE;
486 PL_minus_F = FALSE;
487 PL_doswitches = FALSE;
599cee73 488 PL_dowarn = G_WARN_OFF;
3280af22
NIS
489 PL_doextract = FALSE;
490 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
491 PL_unsafe = FALSE;
492
493 Safefree(PL_inplace);
494 PL_inplace = Nullch;
a7cb1f99 495 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
496
497 if (PL_e_script) {
498 SvREFCNT_dec(PL_e_script);
499 PL_e_script = Nullsv;
8ebc5c01
PP
500 }
501
502 /* magical thingies */
503
7889fe52
NIS
504 SvREFCNT_dec(PL_ofs_sv); /* $, */
505 PL_ofs_sv = Nullsv;
5f05dabc 506
7889fe52
NIS
507 SvREFCNT_dec(PL_ors_sv); /* $\ */
508 PL_ors_sv = Nullsv;
8ebc5c01 509
3280af22
NIS
510 SvREFCNT_dec(PL_rs); /* $/ */
511 PL_rs = Nullsv;
dc92893f 512
3280af22
NIS
513 SvREFCNT_dec(PL_nrs); /* $/ helper */
514 PL_nrs = Nullsv;
5f05dabc 515
d33b2eba
GS
516 PL_multiline = 0; /* $* */
517 Safefree(PL_osname); /* $^O */
518 PL_osname = Nullch;
5f05dabc 519
3280af22
NIS
520 SvREFCNT_dec(PL_statname);
521 PL_statname = Nullsv;
522 PL_statgv = Nullgv;
5f05dabc 523
8ebc5c01
PP
524 /* defgv, aka *_ should be taken care of elsewhere */
525
8ebc5c01 526 /* clean up after study() */
3280af22
NIS
527 SvREFCNT_dec(PL_lastscream);
528 PL_lastscream = Nullsv;
529 Safefree(PL_screamfirst);
530 PL_screamfirst = 0;
531 Safefree(PL_screamnext);
532 PL_screamnext = 0;
8ebc5c01 533
7d5ea4e7
GS
534 /* float buffer */
535 Safefree(PL_efloatbuf);
536 PL_efloatbuf = Nullch;
537 PL_efloatsize = 0;
538
8ebc5c01 539 /* startup and shutdown function lists */
3280af22
NIS
540 SvREFCNT_dec(PL_beginav);
541 SvREFCNT_dec(PL_endav);
7d30b5c4 542 SvREFCNT_dec(PL_checkav);
3280af22
NIS
543 SvREFCNT_dec(PL_initav);
544 PL_beginav = Nullav;
545 PL_endav = Nullav;
7d30b5c4 546 PL_checkav = Nullav;
3280af22 547 PL_initav = Nullav;
5618dfe8 548
8ebc5c01 549 /* shortcuts just get cleared */
3280af22 550 PL_envgv = Nullgv;
3280af22
NIS
551 PL_incgv = Nullgv;
552 PL_hintgv = Nullgv;
553 PL_errgv = Nullgv;
554 PL_argvgv = Nullgv;
555 PL_argvoutgv = Nullgv;
556 PL_stdingv = Nullgv;
bf49b057 557 PL_stderrgv = Nullgv;
3280af22
NIS
558 PL_last_in_gv = Nullgv;
559 PL_replgv = Nullgv;
5c831c24 560 PL_debstash = Nullhv;
8ebc5c01
PP
561
562 /* reset so print() ends up where we expect */
563 setdefout(Nullgv);
5c831c24 564
7a1c5554
GS
565 SvREFCNT_dec(PL_argvout_stack);
566 PL_argvout_stack = Nullav;
8ebc5c01 567
5c831c24
GS
568 SvREFCNT_dec(PL_modglobal);
569 PL_modglobal = Nullhv;
570 SvREFCNT_dec(PL_preambleav);
571 PL_preambleav = Nullav;
572 SvREFCNT_dec(PL_subname);
573 PL_subname = Nullsv;
574 SvREFCNT_dec(PL_linestr);
575 PL_linestr = Nullsv;
576 SvREFCNT_dec(PL_pidstatus);
577 PL_pidstatus = Nullhv;
578 SvREFCNT_dec(PL_toptarget);
579 PL_toptarget = Nullsv;
580 SvREFCNT_dec(PL_bodytarget);
581 PL_bodytarget = Nullsv;
582 PL_formtarget = Nullsv;
583
d33b2eba 584 /* free locale stuff */
b9582b6a 585#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
586 Safefree(PL_collation_name);
587 PL_collation_name = Nullch;
b9582b6a 588#endif
d33b2eba 589
b9582b6a 590#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
591 Safefree(PL_numeric_name);
592 PL_numeric_name = Nullch;
a453c169 593 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 594#endif
d33b2eba 595
5c831c24
GS
596 /* clear utf8 character classes */
597 SvREFCNT_dec(PL_utf8_alnum);
598 SvREFCNT_dec(PL_utf8_alnumc);
599 SvREFCNT_dec(PL_utf8_ascii);
600 SvREFCNT_dec(PL_utf8_alpha);
601 SvREFCNT_dec(PL_utf8_space);
602 SvREFCNT_dec(PL_utf8_cntrl);
603 SvREFCNT_dec(PL_utf8_graph);
604 SvREFCNT_dec(PL_utf8_digit);
605 SvREFCNT_dec(PL_utf8_upper);
606 SvREFCNT_dec(PL_utf8_lower);
607 SvREFCNT_dec(PL_utf8_print);
608 SvREFCNT_dec(PL_utf8_punct);
609 SvREFCNT_dec(PL_utf8_xdigit);
610 SvREFCNT_dec(PL_utf8_mark);
611 SvREFCNT_dec(PL_utf8_toupper);
612 SvREFCNT_dec(PL_utf8_tolower);
613 PL_utf8_alnum = Nullsv;
614 PL_utf8_alnumc = Nullsv;
615 PL_utf8_ascii = Nullsv;
616 PL_utf8_alpha = Nullsv;
617 PL_utf8_space = Nullsv;
618 PL_utf8_cntrl = Nullsv;
619 PL_utf8_graph = Nullsv;
620 PL_utf8_digit = Nullsv;
621 PL_utf8_upper = Nullsv;
622 PL_utf8_lower = Nullsv;
623 PL_utf8_print = Nullsv;
624 PL_utf8_punct = Nullsv;
625 PL_utf8_xdigit = Nullsv;
626 PL_utf8_mark = Nullsv;
627 PL_utf8_toupper = Nullsv;
628 PL_utf8_totitle = Nullsv;
629 PL_utf8_tolower = Nullsv;
630
971a9dd3
GS
631 if (!specialWARN(PL_compiling.cop_warnings))
632 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 633 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
634 if (!specialCopIO(PL_compiling.cop_io))
635 SvREFCNT_dec(PL_compiling.cop_io);
636 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS
637#ifdef USE_ITHREADS
638 Safefree(CopFILE(&PL_compiling));
639 CopFILE(&PL_compiling) = Nullch;
640 Safefree(CopSTASHPV(&PL_compiling));
641#else
01724ea0 642 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS
643 CopFILEGV(&PL_compiling) = Nullgv;
644 /* cop_stash is not refcounted */
01724ea0 645#endif
5c831c24 646
a0d0e21e 647 /* Prepare to destruct main symbol table. */
5f05dabc 648
3280af22
NIS
649 hv = PL_defstash;
650 PL_defstash = 0;
a0d0e21e 651 SvREFCNT_dec(hv);
5c831c24
GS
652 SvREFCNT_dec(PL_curstname);
653 PL_curstname = Nullsv;
a0d0e21e 654
5a844595
GS
655 /* clear queued errors */
656 SvREFCNT_dec(PL_errors);
657 PL_errors = Nullsv;
658
a0d0e21e 659 FREETMPS;
0453d815 660 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 661 if (PL_scopestack_ix != 0)
0453d815
PM
662 Perl_warner(aTHX_ WARN_INTERNAL,
663 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
664 (long)PL_scopestack_ix);
665 if (PL_savestack_ix != 0)
0453d815
PM
666 Perl_warner(aTHX_ WARN_INTERNAL,
667 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
668 (long)PL_savestack_ix);
669 if (PL_tmps_floor != -1)
0453d815 670 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 671 (long)PL_tmps_floor + 1);
a0d0e21e 672 if (cxstack_ix != -1)
0453d815 673 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 674 (long)cxstack_ix + 1);
a0d0e21e 675 }
8990e307
LW
676
677 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 678 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 679 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
680
681 /* the 2 is for PL_fdpid and PL_strtab */
682 while (PL_sv_count > 2 && sv_clean_all())
683 ;
684
d33b2eba
GS
685 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
686 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
687 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
688 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 689
d4777f27
GS
690 AvREAL_off(PL_fdpid); /* no surviving entries */
691 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
692 PL_fdpid = Nullav;
693
6c644e78
GS
694#ifdef HAVE_INTERP_INTERN
695 sys_intern_clear();
696#endif
697
6e72f9df
PP
698 /* Destruct the global string table. */
699 {
700 /* Yell and reset the HeVAL() slots that are still holding refcounts,
701 * so that sv_free() won't fail on them.
702 */
703 I32 riter;
704 I32 max;
705 HE *hent;
706 HE **array;
707
708 riter = 0;
3280af22
NIS
709 max = HvMAX(PL_strtab);
710 array = HvARRAY(PL_strtab);
6e72f9df
PP
711 hent = array[0];
712 for (;;) {
0453d815
PM
713 if (hent && ckWARN_d(WARN_INTERNAL)) {
714 Perl_warner(aTHX_ WARN_INTERNAL,
715 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
716 HeVAL(hent) - Nullsv, HeKEY(hent));
717 HeVAL(hent) = Nullsv;
718 hent = HeNEXT(hent);
719 }
720 if (!hent) {
721 if (++riter > max)
722 break;
723 hent = array[riter];
724 }
725 }
726 }
3280af22 727 SvREFCNT_dec(PL_strtab);
6e72f9df 728
e652bb2f 729#ifdef USE_ITHREADS
a0739874
DM
730 /* free the pointer table used for cloning */
731 ptr_table_free(PL_ptr_table);
53186e96 732#endif
a0739874 733
d33b2eba
GS
734 /* free special SVs */
735
736 SvREFCNT(&PL_sv_yes) = 0;
737 sv_clear(&PL_sv_yes);
738 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 739 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
740
741 SvREFCNT(&PL_sv_no) = 0;
742 sv_clear(&PL_sv_no);
743 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 744 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS
745
746 SvREFCNT(&PL_sv_undef) = 0;
747 SvREADONLY_off(&PL_sv_undef);
d33b2eba 748
0453d815
PM
749 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
750 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 751
3280af22 752 Safefree(PL_origfilename);
3280af22 753 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
754 if (PL_reg_curpm)
755 Safefree(PL_reg_curpm);
82ba1be6 756 Safefree(PL_reg_poscache);
3280af22
NIS
757 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
758 Safefree(PL_op_mask);
cf36064f
GS
759 Safefree(PL_psig_ptr);
760 Safefree(PL_psig_name);
2c2666fc 761 Safefree(PL_bitcount);
ce08f86c 762 Safefree(PL_psig_pend);
6e72f9df 763 nuke_stacks();
3280af22 764 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 765
a0d0e21e 766 DEBUG_P(debprofdump());
11343788 767#ifdef USE_THREADS
5f08fbcd 768 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
769 MUTEX_DESTROY(&PL_sv_mutex);
770 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 771 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 772 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 773 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
774#ifdef EMULATE_ATOMIC_REFCOUNTS
775 MUTEX_DESTROY(&PL_svref_mutex);
776#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 777
8023c3ce 778 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
779 Safefree(SvPVX(PL_thrsv));
780 Safefree(SvANY(PL_thrsv));
781 Safefree(PL_thrsv);
782 PL_thrsv = Nullsv;
8023c3ce 783#endif /* USE_THREADS */
d33b2eba 784
e5dd39fc
AB
785#ifdef USE_REENTRANT_API
786 Safefree(PL_reentrant_buffer->tmbuff);
787 Safefree(PL_reentrant_buffer);
788#endif
789
612f20c3
GS
790 sv_free_arenas();
791
fc36a67e
PP
792 /* As the absolutely last thing, free the non-arena SV for mess() */
793
3280af22 794 if (PL_mess_sv) {
9c63abab
GS
795 /* it could have accumulated taint magic */
796 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
797 MAGIC* mg;
798 MAGIC* moremagic;
799 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
800 moremagic = mg->mg_moremagic;
14befaf4
DM
801 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
802 && mg->mg_len >= 0)
9c63abab
GS
803 Safefree(mg->mg_ptr);
804 Safefree(mg);
805 }
806 }
fc36a67e 807 /* we know that type >= SVt_PV */
155aba94 808 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
809 Safefree(SvPVX(PL_mess_sv));
810 Safefree(SvANY(PL_mess_sv));
811 Safefree(PL_mess_sv);
812 PL_mess_sv = Nullsv;
fc36a67e 813 }
79072805
LW
814}
815
954c1994
GS
816/*
817=for apidoc perl_free
818
819Releases a Perl interpreter. See L<perlembed>.
820
821=cut
822*/
823
79072805 824void
0cb96387 825perl_free(pTHXx)
79072805 826{
c5be433b 827#if defined(PERL_OBJECT)
7f0d82f7 828 PerlMem_free(this);
76e3520e 829#else
2986a63f 830# if defined(WIN32) || defined(NETWARE)
ce3e5b80 831# if defined(PERL_IMPLICIT_SYS)
2986a63f
JH
832 #ifdef NETWARE
833 void *host = nw_internal_host;
834 #else
835 void *host = w32_internal_host;
836 #endif
837 #ifndef NETWARE
838 if (PerlProc_lasthost()) {
ce08f86c 839 PerlIO_cleanup();
2986a63f
JH
840 }
841 #endif
7f0d82f7 842 PerlMem_free(aTHXx);
2986a63f
JH
843 #ifdef NETWARE
844 nw5_delete_internal_host(host);
845 #else
846 win32_delete_internal_host(host);
847 #endif
ce3e5b80 848#else
ce08f86c 849 PerlIO_cleanup();
ce3e5b80
NIS
850 PerlMem_free(aTHXx);
851#endif
1c0ca838
GS
852# else
853 PerlMem_free(aTHXx);
854# endif
76e3520e 855#endif
79072805
LW
856}
857
4b556e6c 858void
864dbfa3 859Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 860{
3280af22
NIS
861 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
862 PL_exitlist[PL_exitlistlen].fn = fn;
863 PL_exitlist[PL_exitlistlen].ptr = ptr;
864 ++PL_exitlistlen;
4b556e6c
JD
865}
866
954c1994
GS
867/*
868=for apidoc perl_parse
869
870Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
871
872=cut
873*/
874
79072805 875int
0cb96387 876perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 877{
6224f72b 878 I32 oldscope;
6224f72b 879 int ret;
db36c5a1 880 dJMPENV;
cea2e8a9
GS
881#ifdef USE_THREADS
882 dTHX;
883#endif
8d063cd8 884
a687059c
LW
885#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
886#ifdef IAMSUID
887#undef IAMSUID
cea2e8a9 888 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
889setuid perl scripts securely.\n");
890#endif
891#endif
892
8f1f23e8 893#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df
PP
894 _dyld_lookup_and_bind
895 ("__environ", (unsigned long *) &environ_pointer, NULL);
896#endif /* environ */
897
3280af22
NIS
898 PL_origargv = argv;
899 PL_origargc = argc;
fa6a1c44 900#ifdef USE_ENVIRON_ARRAY
3280af22 901 PL_origenviron = environ;
a0d0e21e
LW
902#endif
903
3280af22 904 if (PL_do_undump) {
a0d0e21e
LW
905
906 /* Come here if running an undumped a.out. */
907
3280af22
NIS
908 PL_origfilename = savepv(argv[0]);
909 PL_do_undump = FALSE;
a0d0e21e 910 cxstack_ix = -1; /* start label stack again */
748a9306 911 init_ids();
a0d0e21e
LW
912 init_postdump_symbols(argc,argv,env);
913 return 0;
914 }
915
3280af22
NIS
916 if (PL_main_root) {
917 PL_curpad = AvARRAY(PL_comppad);
918 op_free(PL_main_root);
919 PL_main_root = Nullop;
ff0cee69 920 }
3280af22
NIS
921 PL_main_start = Nullop;
922 SvREFCNT_dec(PL_main_cv);
923 PL_main_cv = Nullcv;
79072805 924
3280af22
NIS
925 time(&PL_basetime);
926 oldscope = PL_scopestack_ix;
599cee73 927 PL_dowarn = G_WARN_OFF;
f86702cc 928
14dd3ad8
GS
929#ifdef PERL_FLEXIBLE_EXCEPTIONS
930 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
931#else
932 JMPENV_PUSH(ret);
933#endif
6224f72b 934 switch (ret) {
312caa8e 935 case 0:
14dd3ad8
GS
936#ifndef PERL_FLEXIBLE_EXCEPTIONS
937 parse_body(env,xsinit);
938#endif
7d30b5c4
GS
939 if (PL_checkav)
940 call_list(oldscope, PL_checkav);
14dd3ad8
GS
941 ret = 0;
942 break;
6224f72b
GS
943 case 1:
944 STATUS_ALL_FAILURE;
945 /* FALL THROUGH */
946 case 2:
947 /* my_exit() was called */
3280af22 948 while (PL_scopestack_ix > oldscope)
6224f72b
GS
949 LEAVE;
950 FREETMPS;
3280af22 951 PL_curstash = PL_defstash;
7d30b5c4
GS
952 if (PL_checkav)
953 call_list(oldscope, PL_checkav);
14dd3ad8
GS
954 ret = STATUS_NATIVE_EXPORT;
955 break;
6224f72b 956 case 3:
bf49b057 957 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
958 ret = 1;
959 break;
6224f72b 960 }
14dd3ad8
GS
961 JMPENV_POP;
962 return ret;
963}
964
965#ifdef PERL_FLEXIBLE_EXCEPTIONS
966STATIC void *
967S_vparse_body(pTHX_ va_list args)
968{
969 char **env = va_arg(args, char**);
970 XSINIT_t xsinit = va_arg(args, XSINIT_t);
971
972 return parse_body(env, xsinit);
312caa8e 973}
14dd3ad8 974#endif
312caa8e
CS
975
976STATIC void *
14dd3ad8 977S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 978{
312caa8e
CS
979 int argc = PL_origargc;
980 char **argv = PL_origargv;
312caa8e
CS
981 char *scriptname = NULL;
982 int fdscript = -1;
983 VOL bool dosearch = FALSE;
984 char *validarg = "";
985 AV* comppadlist;
986 register SV *sv;
987 register char *s;
659ca9ea 988 char *popts, *cddir = Nullch;
312caa8e 989
3280af22 990 sv_setpvn(PL_linestr,"",0);
79cb57f6 991 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
992 SAVEFREESV(sv);
993 init_main_stash();
54310121 994
6224f72b
GS
995 for (argc--,argv++; argc > 0; argc--,argv++) {
996 if (argv[0][0] != '-' || !argv[0][1])
997 break;
998#ifdef DOSUID
999 if (*validarg)
1000 validarg = " PHOOEY ";
1001 else
1002 validarg = argv[0];
13281fa4 1003#endif
6224f72b
GS
1004 s = argv[0]+1;
1005 reswitch:
1006 switch (*s) {
729a02f2
GS
1007 case 'C':
1008#ifdef WIN32
c0932edc 1009 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
1010 /* FALL THROUGH */
1011#endif
1d5472a9
GS
1012#ifndef PERL_STRICT_CR
1013 case '\r':
1014#endif
6224f72b
GS
1015 case ' ':
1016 case '0':
1017 case 'F':
1018 case 'a':
1019 case 'c':
1020 case 'd':
1021 case 'D':
1022 case 'h':
1023 case 'i':
1024 case 'l':
1025 case 'M':
1026 case 'm':
1027 case 'n':
1028 case 'p':
1029 case 's':
1030 case 'u':
1031 case 'U':
1032 case 'v':
599cee73
PM
1033 case 'W':
1034 case 'X':
6224f72b 1035 case 'w':
155aba94 1036 if ((s = moreswitches(s)))
6224f72b
GS
1037 goto reswitch;
1038 break;
33b78306 1039
6224f72b 1040 case 'T':
3280af22 1041 PL_tainting = TRUE;
6224f72b
GS
1042 s++;
1043 goto reswitch;
f86702cc 1044
6224f72b 1045 case 'e':
bf4acbe4
GS
1046#ifdef MACOS_TRADITIONAL
1047 /* ignore -e for Dev:Pseudo argument */
1048 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1049 break;
bf4acbe4 1050#endif
3280af22 1051 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1052 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1053 if (!PL_e_script) {
79cb57f6 1054 PL_e_script = newSVpvn("",0);
0cb96387 1055 filter_add(read_e_script, NULL);
6224f72b
GS
1056 }
1057 if (*++s)
3280af22 1058 sv_catpv(PL_e_script, s);
6224f72b 1059 else if (argv[1]) {
3280af22 1060 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1061 argc--,argv++;
1062 }
1063 else
cea2e8a9 1064 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1065 sv_catpv(PL_e_script, "\n");
6224f72b 1066 break;
afe37c7d 1067
6224f72b
GS
1068 case 'I': /* -I handled both here and in moreswitches() */
1069 forbid_setid("-I");
1070 if (!*++s && (s=argv[1]) != Nullch) {
1071 argc--,argv++;
1072 }
6224f72b 1073 if (s && *s) {
0df16ed7
GS
1074 char *p;
1075 STRLEN len = strlen(s);
1076 p = savepvn(s, len);
9c8a64f0 1077 incpush(p, TRUE, TRUE);
0df16ed7
GS
1078 sv_catpvn(sv, "-I", 2);
1079 sv_catpvn(sv, p, len);
1080 sv_catpvn(sv, " ", 1);
6224f72b 1081 Safefree(p);
0df16ed7
GS
1082 }
1083 else
a67e862a 1084 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1085 break;
1086 case 'P':
1087 forbid_setid("-P");
3280af22 1088 PL_preprocess = TRUE;
6224f72b
GS
1089 s++;
1090 goto reswitch;
1091 case 'S':
1092 forbid_setid("-S");
1093 dosearch = TRUE;
1094 s++;
1095 goto reswitch;
1096 case 'V':
3280af22
NIS
1097 if (!PL_preambleav)
1098 PL_preambleav = newAV();
1099 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1100 if (*++s != ':') {
3280af22 1101 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1102#ifdef VMS
6b88bc9c 1103 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1104#else
3280af22 1105 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1106#endif
3280af22 1107 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1108# ifdef DEBUGGING
3280af22 1109 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1110# endif
6224f72b 1111# ifdef MULTIPLICITY
8f872242 1112 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1113# endif
b363f7ed
GS
1114# ifdef USE_THREADS
1115 sv_catpv(PL_Sv," USE_THREADS");
1116# endif
ac5e8965
JH
1117# ifdef USE_ITHREADS
1118 sv_catpv(PL_Sv," USE_ITHREADS");
1119# endif
10cc9d2a
JH
1120# ifdef USE_64_BIT_INT
1121 sv_catpv(PL_Sv," USE_64_BIT_INT");
1122# endif
1123# ifdef USE_64_BIT_ALL
1124 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1125# endif
1126# ifdef USE_LONG_DOUBLE
1127 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1128# endif
53430762
JH
1129# ifdef USE_LARGE_FILES
1130 sv_catpv(PL_Sv," USE_LARGE_FILES");
1131# endif
ac5e8965
JH
1132# ifdef USE_SOCKS
1133 sv_catpv(PL_Sv," USE_SOCKS");
1134# endif
b363f7ed
GS
1135# ifdef PERL_OBJECT
1136 sv_catpv(PL_Sv," PERL_OBJECT");
1137# endif
1138# ifdef PERL_IMPLICIT_CONTEXT
1139 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1140# endif
1141# ifdef PERL_IMPLICIT_SYS
1142 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1143# endif
3280af22 1144 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1145
6224f72b
GS
1146#if defined(LOCAL_PATCH_COUNT)
1147 if (LOCAL_PATCH_COUNT > 0) {
1148 int i;
3280af22 1149 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1150 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1151 if (PL_localpatches[i])
cea2e8a9 1152 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1153 }
1154 }
1155#endif
cea2e8a9 1156 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1157#ifdef __DATE__
1158# ifdef __TIME__
cea2e8a9 1159 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1160# else
cea2e8a9 1161 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1162# endif
1163#endif
3280af22 1164 sv_catpv(PL_Sv, "; \
6224f72b 1165$\"=\"\\n \"; \
69fcd688
JH
1166@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1167#ifdef __CYGWIN__
1168 sv_catpv(PL_Sv,"\
1169push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1170#endif
1171 sv_catpv(PL_Sv, "\
6224f72b
GS
1172print \" \\%ENV:\\n @env\\n\" if @env; \
1173print \" \\@INC:\\n @INC\\n\";");
1174 }
1175 else {
3280af22
NIS
1176 PL_Sv = newSVpv("config_vars(qw(",0);
1177 sv_catpv(PL_Sv, ++s);
1178 sv_catpv(PL_Sv, "))");
6224f72b
GS
1179 s += strlen(s);
1180 }
3280af22 1181 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1182 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1183 goto reswitch;
1184 case 'x':
3280af22 1185 PL_doextract = TRUE;
6224f72b
GS
1186 s++;
1187 if (*s)
f4c556ac 1188 cddir = s;
6224f72b
GS
1189 break;
1190 case 0:
1191 break;
1192 case '-':
1193 if (!*++s || isSPACE(*s)) {
1194 argc--,argv++;
1195 goto switch_end;
1196 }
1197 /* catch use of gnu style long options */
1198 if (strEQ(s, "version")) {
1199 s = "v";
1200 goto reswitch;
1201 }
1202 if (strEQ(s, "help")) {
1203 s = "h";
1204 goto reswitch;
1205 }
1206 s--;
1207 /* FALL THROUGH */
1208 default:
cea2e8a9 1209 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1210 }
1211 }
6224f72b 1212 switch_end:
54310121 1213
f675dbe5
CB
1214 if (
1215#ifndef SECURE_INTERNAL_GETENV
1216 !PL_tainting &&
1217#endif
659ca9ea 1218 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1219 {
659ca9ea 1220 s = savepv(popts);
74288ac8
GS
1221 while (isSPACE(*s))
1222 s++;
1223 if (*s == '-' && *(s+1) == 'T')
1224 PL_tainting = TRUE;
1225 else {
1226 while (s && *s) {
4ea8f8fb 1227 char *d;
74288ac8
GS
1228 while (isSPACE(*s))
1229 s++;
1230 if (*s == '-') {
1231 s++;
1232 if (isSPACE(*s))
1233 continue;
1234 }
4ea8f8fb 1235 d = s;
74288ac8
GS
1236 if (!*s)
1237 break;
1238 if (!strchr("DIMUdmw", *s))
cea2e8a9 1239 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1240 while (++s && *s) {
1241 if (isSPACE(*s)) {
1242 *s++ = '\0';
1243 break;
1244 }
1245 }
1246 moreswitches(d);
6224f72b 1247 }
6224f72b
GS
1248 }
1249 }
a0d0e21e 1250
6224f72b
GS
1251 if (!scriptname)
1252 scriptname = argv[0];
3280af22 1253 if (PL_e_script) {
6224f72b
GS
1254 argc++,argv--;
1255 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1256 }
1257 else if (scriptname == Nullch) {
1258#ifdef MSDOS
1259 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1260 moreswitches("h");
1261#endif
1262 scriptname = "-";
1263 }
1264
1265 init_perllib();
1266
1267 open_script(scriptname,dosearch,sv,&fdscript);
1268
1269 validate_suid(validarg, scriptname,fdscript);
1270
64ca3a65 1271#ifndef PERL_MICRO
0b5b802d
GS
1272#if defined(SIGCHLD) || defined(SIGCLD)
1273 {
1274#ifndef SIGCHLD
1275# define SIGCHLD SIGCLD
1276#endif
1277 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1278 if (sigstate == SIG_IGN) {
1279 if (ckWARN(WARN_SIGNAL))
1280 Perl_warner(aTHX_ WARN_SIGNAL,
1281 "Can't ignore signal CHLD, forcing to default");
1282 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1283 }
1284 }
1285#endif
64ca3a65 1286#endif
0b5b802d 1287
bf4acbe4
GS
1288#ifdef MACOS_TRADITIONAL
1289 if (PL_doextract || gMacPerl_AlwaysExtract) {
1290#else
f4c556ac 1291 if (PL_doextract) {
bf4acbe4 1292#endif
6224f72b 1293 find_beginning();
f4c556ac
GS
1294 if (cddir && PerlDir_chdir(cddir) < 0)
1295 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1296
1297 }
6224f72b 1298
3280af22
NIS
1299 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1300 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1301 CvUNIQUE_on(PL_compcv);
1302
1303 PL_comppad = newAV();
1304 av_push(PL_comppad, Nullsv);
1305 PL_curpad = AvARRAY(PL_comppad);
1306 PL_comppad_name = newAV();
1307 PL_comppad_name_fill = 0;
1308 PL_min_intro_pending = 0;
1309 PL_padix = 0;
6224f72b 1310#ifdef USE_THREADS
79cb57f6 1311 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1312 PL_curpad[0] = (SV*)newAV();
1313 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1314 CvOWNER(PL_compcv) = 0;
1315 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1316 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS
1317#endif /* USE_THREADS */
1318
1319 comppadlist = newAV();
1320 AvREAL_off(comppadlist);
3280af22
NIS
1321 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1322 av_store(comppadlist, 1, (SV*)PL_comppad);
1323 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1324
0c4f7ff0 1325 boot_core_PerlIO();
6224f72b 1326 boot_core_UNIVERSAL();
9a34ef1d 1327#ifndef PERL_MICRO
09bef843 1328 boot_core_xsutils();
9a34ef1d 1329#endif
6224f72b
GS
1330
1331 if (xsinit)
0cb96387 1332 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1333#ifndef PERL_MICRO
ed79a026 1334#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1335 init_os_extras();
6224f72b 1336#endif
64ca3a65 1337#endif
6224f72b 1338
29209bc5 1339#ifdef USE_SOCKS
1b9c9cf5
DH
1340# ifdef HAS_SOCKS5_INIT
1341 socks5_init(argv[0]);
1342# else
29209bc5 1343 SOCKSinit(argv[0]);
1b9c9cf5 1344# endif
ac27b0f5 1345#endif
29209bc5 1346
6224f72b
GS
1347 init_predump_symbols();
1348 /* init_postdump_symbols not currently designed to be called */
1349 /* more than once (ENV isn't cleared first, for example) */
1350 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1351 if (!PL_do_undump)
6224f72b
GS
1352 init_postdump_symbols(argc,argv,env);
1353
1354 init_lexer();
1355
1356 /* now parse the script */
1357
1358 SETERRNO(0,SS$_NORMAL);
3280af22 1359 PL_error_count = 0;
bf4acbe4
GS
1360#ifdef MACOS_TRADITIONAL
1361 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1362 if (PL_minus_c)
1363 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1364 else {
1365 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1366 MacPerl_MPWFileName(PL_origfilename));
1367 }
1368 }
1369#else
3280af22
NIS
1370 if (yyparse() || PL_error_count) {
1371 if (PL_minus_c)
cea2e8a9 1372 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1373 else {
cea2e8a9 1374 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1375 PL_origfilename);
6224f72b
GS
1376 }
1377 }
bf4acbe4 1378#endif
57843af0 1379 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1380 PL_curstash = PL_defstash;
1381 PL_preprocess = FALSE;
1382 if (PL_e_script) {
1383 SvREFCNT_dec(PL_e_script);
1384 PL_e_script = Nullsv;
6224f72b
GS
1385 }
1386
1387 /* now that script is parsed, we can modify record separator */
3280af22
NIS
1388 SvREFCNT_dec(PL_rs);
1389 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1390 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1391 if (PL_do_undump)
6224f72b
GS
1392 my_unexec();
1393
57843af0
GS
1394 if (isWARN_ONCE) {
1395 SAVECOPFILE(PL_curcop);
1396 SAVECOPLINE(PL_curcop);
3280af22 1397 gv_check(PL_defstash);
57843af0 1398 }
6224f72b
GS
1399
1400 LEAVE;
1401 FREETMPS;
1402
1403#ifdef MYMALLOC
1404 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1405 dump_mstats("after compilation:");
1406#endif
1407
1408 ENTER;
3280af22 1409 PL_restartop = 0;
312caa8e 1410 return NULL;
6224f72b
GS
1411}
1412
954c1994
GS
1413/*
1414=for apidoc perl_run
1415
1416Tells a Perl interpreter to run. See L<perlembed>.
1417
1418=cut
1419*/
1420
6224f72b 1421int
0cb96387 1422perl_run(pTHXx)
6224f72b 1423{
6224f72b 1424 I32 oldscope;
14dd3ad8 1425 int ret = 0;
db36c5a1 1426 dJMPENV;
cea2e8a9
GS
1427#ifdef USE_THREADS
1428 dTHX;
1429#endif
6224f72b 1430
3280af22 1431 oldscope = PL_scopestack_ix;
6224f72b 1432
14dd3ad8 1433#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1434 redo_body:
14dd3ad8
GS
1435 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1436#else
1437 JMPENV_PUSH(ret);
1438#endif
6224f72b
GS
1439 switch (ret) {
1440 case 1:
1441 cxstack_ix = -1; /* start context stack again */
312caa8e 1442 goto redo_body;
14dd3ad8
GS
1443 case 0: /* normal completion */
1444#ifndef PERL_FLEXIBLE_EXCEPTIONS
1445 redo_body:
1446 run_body(oldscope);
1447#endif
1448 /* FALL THROUGH */
1449 case 2: /* my_exit() */
3280af22 1450 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1451 LEAVE;
1452 FREETMPS;
3280af22 1453 PL_curstash = PL_defstash;
865be832 1454 if (PL_endav && !PL_minus_c)
3280af22 1455 call_list(oldscope, PL_endav);
6224f72b
GS
1456#ifdef MYMALLOC
1457 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1458 dump_mstats("after execution: ");
1459#endif
14dd3ad8
GS
1460 ret = STATUS_NATIVE_EXPORT;
1461 break;
6224f72b 1462 case 3:
312caa8e
CS
1463 if (PL_restartop) {
1464 POPSTACK_TO(PL_mainstack);
1465 goto redo_body;
6224f72b 1466 }
bf49b057 1467 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1468 FREETMPS;
14dd3ad8
GS
1469 ret = 1;
1470 break;
6224f72b
GS
1471 }
1472
14dd3ad8
GS
1473 JMPENV_POP;
1474 return ret;
312caa8e
CS
1475}
1476
14dd3ad8 1477#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1478STATIC void *
14dd3ad8 1479S_vrun_body(pTHX_ va_list args)
312caa8e 1480{
312caa8e
CS
1481 I32 oldscope = va_arg(args, I32);
1482
14dd3ad8
GS
1483 return run_body(oldscope);
1484}
1485#endif
1486
1487
1488STATIC void *
1489S_run_body(pTHX_ I32 oldscope)
1490{
6224f72b 1491 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1492 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1493
3280af22 1494 if (!PL_restartop) {
6224f72b
GS
1495 DEBUG_x(dump_all());
1496 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1497 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1498 PTR2UV(thr)));
6224f72b 1499
3280af22 1500 if (PL_minus_c) {
bf4acbe4
GS
1501#ifdef MACOS_TRADITIONAL
1502 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1503#else
bf49b057 1504 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1505#endif
6224f72b
GS
1506 my_exit(0);
1507 }
3280af22 1508 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1509 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1510 if (PL_initav)
1511 call_list(oldscope, PL_initav);
6224f72b
GS
1512 }
1513
1514 /* do it */
1515
3280af22 1516 if (PL_restartop) {
533c011a 1517 PL_op = PL_restartop;
3280af22 1518 PL_restartop = 0;
cea2e8a9 1519 CALLRUNOPS(aTHX);
6224f72b 1520 }
3280af22
NIS
1521 else if (PL_main_start) {
1522 CvDEPTH(PL_main_cv) = 1;
533c011a 1523 PL_op = PL_main_start;
cea2e8a9 1524 CALLRUNOPS(aTHX);
6224f72b
GS
1525 }
1526
f6b3007c
JH
1527 my_exit(0);
1528 /* NOTREACHED */
312caa8e 1529 return NULL;
6224f72b
GS
1530}
1531
954c1994
GS
1532/*
1533=for apidoc p||get_sv
1534
1535Returns the SV of the specified Perl scalar. If C<create> is set and the
1536Perl variable does not exist then it will be created. If C<create> is not
1537set and the variable does not exist then NULL is returned.
1538
1539=cut
1540*/
1541
6224f72b 1542SV*
864dbfa3 1543Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1544{
1545 GV *gv;
1546#ifdef USE_THREADS
1547 if (name[1] == '\0' && !isALPHA(name[0])) {
1548 PADOFFSET tmp = find_threadsv(name);
411caa50 1549 if (tmp != NOT_IN_PAD)
6224f72b 1550 return THREADSV(tmp);
6224f72b
GS
1551 }
1552#endif /* USE_THREADS */
1553 gv = gv_fetchpv(name, create, SVt_PV);
1554 if (gv)
1555 return GvSV(gv);
1556 return Nullsv;
1557}
1558
954c1994
GS
1559/*
1560=for apidoc p||get_av
1561
1562Returns the AV of the specified Perl array. If C<create> is set and the
1563Perl variable does not exist then it will be created. If C<create> is not
1564set and the variable does not exist then NULL is returned.
1565
1566=cut
1567*/
1568
6224f72b 1569AV*
864dbfa3 1570Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1571{
1572 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1573 if (create)
1574 return GvAVn(gv);
1575 if (gv)
1576 return GvAV(gv);
1577 return Nullav;
1578}
1579
954c1994
GS
1580/*
1581=for apidoc p||get_hv
1582
1583Returns the HV of the specified Perl hash. If C<create> is set and the
1584Perl variable does not exist then it will be created. If C<create> is not
1585set and the variable does not exist then NULL is returned.
1586
1587=cut
1588*/
1589
6224f72b 1590HV*
864dbfa3 1591Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1592{
a0d0e21e
LW
1593 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1594 if (create)
1595 return GvHVn(gv);
1596 if (gv)
1597 return GvHV(gv);
1598 return Nullhv;
1599}
1600
954c1994
GS
1601/*
1602=for apidoc p||get_cv
1603
1604Returns the CV of the specified Perl subroutine. If C<create> is set and
1605the Perl subroutine does not exist then it will be declared (which has the
1606same effect as saying C<sub name;>). If C<create> is not set and the
1607subroutine does not exist then NULL is returned.
1608
1609=cut
1610*/
1611
a0d0e21e 1612CV*
864dbfa3 1613Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1614{
1615 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1616 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1617 /* XXX this is probably not what they think they're getting.
1618 * It has the same effect as "sub name;", i.e. just a forward
1619 * declaration! */
8ebc5c01 1620 if (create && !GvCVu(gv))
774d564b 1621 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1622 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1623 Nullop,
a0d0e21e
LW
1624 Nullop);
1625 if (gv)
8ebc5c01 1626 return GvCVu(gv);
a0d0e21e
LW
1627 return Nullcv;
1628}
1629
79072805
LW
1630/* Be sure to refetch the stack pointer after calling these routines. */
1631
954c1994
GS
1632/*
1633=for apidoc p||call_argv
1634
1635Performs a callback to the specified Perl sub. See L<perlcall>.
1636
1637=cut
1638*/
1639
a0d0e21e 1640I32
864dbfa3 1641Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1642
8ac85365
NIS
1643 /* See G_* flags in cop.h */
1644 /* null terminated arg list */
8990e307 1645{
a0d0e21e 1646 dSP;
8990e307 1647
924508f0 1648 PUSHMARK(SP);
a0d0e21e 1649 if (argv) {
8990e307 1650 while (*argv) {
a0d0e21e 1651 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1652 argv++;
1653 }
a0d0e21e 1654 PUTBACK;
8990e307 1655 }
864dbfa3 1656 return call_pv(sub_name, flags);
8990e307
LW
1657}
1658
954c1994
GS
1659/*
1660=for apidoc p||call_pv
1661
1662Performs a callback to the specified Perl sub. See L<perlcall>.
1663
1664=cut
1665*/
1666
a0d0e21e 1667I32
864dbfa3 1668Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1669 /* name of the subroutine */
1670 /* See G_* flags in cop.h */
a0d0e21e 1671{
864dbfa3 1672 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1673}
1674
954c1994
GS
1675/*
1676=for apidoc p||call_method
1677
1678Performs a callback to the specified Perl method. The blessed object must
1679be on the stack. See L<perlcall>.
1680
1681=cut
1682*/
1683
a0d0e21e 1684I32
864dbfa3 1685Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1686 /* name of the subroutine */
1687 /* See G_* flags in cop.h */
a0d0e21e 1688{
968b3946 1689 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1690}
1691
1692/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1693/*
1694=for apidoc p||call_sv
1695
1696Performs a callback to the Perl sub whose name is in the SV. See
1697L<perlcall>.
1698
1699=cut
1700*/
1701
a0d0e21e 1702I32
864dbfa3 1703Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1704 /* See G_* flags in cop.h */
a0d0e21e 1705{
924508f0 1706 dSP;
a0d0e21e 1707 LOGOP myop; /* fake syntax tree node */
968b3946 1708 UNOP method_op;
aa689395 1709 I32 oldmark;
13689cfe 1710 volatile I32 retval = 0;
a0d0e21e 1711 I32 oldscope;
54310121 1712 bool oldcatch = CATCH_GET;
6224f72b 1713 int ret;
533c011a 1714 OP* oldop = PL_op;
db36c5a1 1715 dJMPENV;
1e422769 1716
a0d0e21e
LW
1717 if (flags & G_DISCARD) {
1718 ENTER;
1719 SAVETMPS;
1720 }
1721
aa689395 1722 Zero(&myop, 1, LOGOP);
54310121 1723 myop.op_next = Nullop;
f51d4af5 1724 if (!(flags & G_NOARGS))
aa689395 1725 myop.op_flags |= OPf_STACKED;
54310121
PP
1726 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1727 (flags & G_ARRAY) ? OPf_WANT_LIST :
1728 OPf_WANT_SCALAR);
462e5cf6 1729 SAVEOP();
533c011a 1730 PL_op = (OP*)&myop;
aa689395 1731
3280af22
NIS
1732 EXTEND(PL_stack_sp, 1);
1733 *++PL_stack_sp = sv;
aa689395 1734 oldmark = TOPMARK;
3280af22 1735 oldscope = PL_scopestack_ix;
a0d0e21e 1736
3280af22 1737 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1738 /* Handle first BEGIN of -d. */
3280af22 1739 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1740 /* Try harder, since this may have been a sighandler, thus
1741 * curstash may be meaningless. */
3280af22 1742 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1743 && !(flags & G_NODEBUG))
533c011a 1744 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1745
968b3946
GS
1746 if (flags & G_METHOD) {
1747 Zero(&method_op, 1, UNOP);
1748 method_op.op_next = PL_op;
1749 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1750 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1751 PL_op = (OP*)&method_op;
968b3946
GS
1752 }
1753
312caa8e 1754 if (!(flags & G_EVAL)) {
0cdb2077 1755 CATCH_SET(TRUE);
14dd3ad8 1756 call_body((OP*)&myop, FALSE);
312caa8e 1757 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1758 CATCH_SET(oldcatch);
312caa8e
CS
1759 }
1760 else {
d78bda3d 1761 myop.op_other = (OP*)&myop;
3280af22 1762 PL_markstack_ptr--;
4633a7c4
LW
1763 /* we're trying to emulate pp_entertry() here */
1764 {
c09156bb 1765 register PERL_CONTEXT *cx;
54310121 1766 I32 gimme = GIMME_V;
ac27b0f5 1767
4633a7c4
LW
1768 ENTER;
1769 SAVETMPS;
ac27b0f5 1770
968b3946 1771 push_return(Nullop);
1d76a5c3 1772 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1773 PUSHEVAL(cx, 0, 0);
533c011a 1774 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1775
faef0170 1776 PL_in_eval = EVAL_INEVAL;
4633a7c4 1777 if (flags & G_KEEPERR)
faef0170 1778 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1779 else
38a03e6e 1780 sv_setpv(ERRSV,"");
4633a7c4 1781 }
3280af22 1782 PL_markstack_ptr++;
a0d0e21e 1783
14dd3ad8
GS
1784#ifdef PERL_FLEXIBLE_EXCEPTIONS
1785 redo_body:
1786 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1787 (OP*)&myop, FALSE);
14dd3ad8
GS
1788#else
1789 JMPENV_PUSH(ret);
1790#endif
6224f72b
GS
1791 switch (ret) {
1792 case 0:
14dd3ad8
GS
1793#ifndef PERL_FLEXIBLE_EXCEPTIONS
1794 redo_body:
1795 call_body((OP*)&myop, FALSE);
1796#endif
312caa8e
CS
1797 retval = PL_stack_sp - (PL_stack_base + oldmark);
1798 if (!(flags & G_KEEPERR))
1799 sv_setpv(ERRSV,"");
a0d0e21e 1800 break;
6224f72b 1801 case 1:
f86702cc 1802 STATUS_ALL_FAILURE;
a0d0e21e 1803 /* FALL THROUGH */
6224f72b 1804 case 2:
a0d0e21e 1805 /* my_exit() was called */
3280af22 1806 PL_curstash = PL_defstash;
a0d0e21e 1807 FREETMPS;
14dd3ad8 1808 JMPENV_POP;
cc3604b1 1809 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1810 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1811 my_exit_jump();
a0d0e21e 1812 /* NOTREACHED */
6224f72b 1813 case 3:
3280af22 1814 if (PL_restartop) {
533c011a 1815 PL_op = PL_restartop;
3280af22 1816 PL_restartop = 0;
312caa8e 1817 goto redo_body;
a0d0e21e 1818 }
3280af22 1819 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1820 if (flags & G_ARRAY)
1821 retval = 0;
1822 else {
1823 retval = 1;
3280af22 1824 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1825 }
312caa8e 1826 break;
a0d0e21e 1827 }
a0d0e21e 1828
3280af22 1829 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1830 SV **newsp;
1831 PMOP *newpm;
1832 I32 gimme;
c09156bb 1833 register PERL_CONTEXT *cx;
a0a2876f
LW
1834 I32 optype;
1835
1836 POPBLOCK(cx,newpm);
1837 POPEVAL(cx);
1838 pop_return();
3280af22 1839 PL_curpm = newpm;
a0a2876f 1840 LEAVE;
a0d0e21e 1841 }
14dd3ad8 1842 JMPENV_POP;
a0d0e21e 1843 }
1e422769 1844
a0d0e21e 1845 if (flags & G_DISCARD) {
3280af22 1846 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1847 retval = 0;
1848 FREETMPS;
1849 LEAVE;
1850 }
533c011a 1851 PL_op = oldop;
a0d0e21e
LW
1852 return retval;
1853}
1854
14dd3ad8 1855#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1856STATIC void *
14dd3ad8 1857S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1858{
1859 OP *myop = va_arg(args, OP*);
1860 int is_eval = va_arg(args, int);
1861
14dd3ad8 1862 call_body(myop, is_eval);
312caa8e
CS
1863 return NULL;
1864}
14dd3ad8 1865#endif
312caa8e
CS
1866
1867STATIC void
14dd3ad8 1868S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1869{
312caa8e
CS
1870 if (PL_op == myop) {
1871 if (is_eval)
f807eda9 1872 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1873 else
f807eda9 1874 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1875 }
1876 if (PL_op)
cea2e8a9 1877 CALLRUNOPS(aTHX);
312caa8e
CS
1878}
1879
6e72f9df 1880/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1881
954c1994
GS
1882/*
1883=for apidoc p||eval_sv
1884
1885Tells Perl to C<eval> the string in the SV.
1886
1887=cut
1888*/
1889
a0d0e21e 1890I32
864dbfa3 1891Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1892
8ac85365 1893 /* See G_* flags in cop.h */
a0d0e21e 1894{
924508f0 1895 dSP;
a0d0e21e 1896 UNOP myop; /* fake syntax tree node */
8fa7f367 1897 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1898 volatile I32 retval = 0;
4633a7c4 1899 I32 oldscope;
6224f72b 1900 int ret;
533c011a 1901 OP* oldop = PL_op;
db36c5a1 1902 dJMPENV;
84902520 1903
4633a7c4
LW
1904 if (flags & G_DISCARD) {
1905 ENTER;
1906 SAVETMPS;
1907 }
1908
462e5cf6 1909 SAVEOP();
533c011a
NIS
1910 PL_op = (OP*)&myop;
1911 Zero(PL_op, 1, UNOP);
3280af22
NIS
1912 EXTEND(PL_stack_sp, 1);
1913 *++PL_stack_sp = sv;
1914 oldscope = PL_scopestack_ix;
79072805 1915
4633a7c4
LW
1916 if (!(flags & G_NOARGS))
1917 myop.op_flags = OPf_STACKED;
79072805 1918 myop.op_next = Nullop;
6e72f9df 1919 myop.op_type = OP_ENTEREVAL;
54310121
PP
1920 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1921 (flags & G_ARRAY) ? OPf_WANT_LIST :
1922 OPf_WANT_SCALAR);
6e72f9df
PP
1923 if (flags & G_KEEPERR)
1924 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1925
14dd3ad8 1926#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1927 redo_body:
14dd3ad8 1928 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1929 (OP*)&myop, TRUE);
14dd3ad8
GS
1930#else
1931 JMPENV_PUSH(ret);
1932#endif
6224f72b
GS
1933 switch (ret) {
1934 case 0:
14dd3ad8
GS
1935#ifndef PERL_FLEXIBLE_EXCEPTIONS
1936 redo_body:
1937 call_body((OP*)&myop,TRUE);
1938#endif
312caa8e
CS
1939 retval = PL_stack_sp - (PL_stack_base + oldmark);
1940 if (!(flags & G_KEEPERR))
1941 sv_setpv(ERRSV,"");
4633a7c4 1942 break;
6224f72b 1943 case 1:
f86702cc 1944 STATUS_ALL_FAILURE;
4633a7c4 1945 /* FALL THROUGH */
6224f72b 1946 case 2:
4633a7c4 1947 /* my_exit() was called */
3280af22 1948 PL_curstash = PL_defstash;
4633a7c4 1949 FREETMPS;
14dd3ad8 1950 JMPENV_POP;
cc3604b1 1951 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1952 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1953 my_exit_jump();
4633a7c4 1954 /* NOTREACHED */
6224f72b 1955 case 3:
3280af22 1956 if (PL_restartop) {
533c011a 1957 PL_op = PL_restartop;
3280af22 1958 PL_restartop = 0;
312caa8e 1959 goto redo_body;
4633a7c4 1960 }
3280af22 1961 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1962 if (flags & G_ARRAY)
1963 retval = 0;
1964 else {
1965 retval = 1;
3280af22 1966 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1967 }
312caa8e 1968 break;
4633a7c4
LW
1969 }
1970
14dd3ad8 1971 JMPENV_POP;
4633a7c4 1972 if (flags & G_DISCARD) {
3280af22 1973 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
1974 retval = 0;
1975 FREETMPS;
1976 LEAVE;
1977 }
533c011a 1978 PL_op = oldop;
4633a7c4
LW
1979 return retval;
1980}
1981
954c1994
GS
1982/*
1983=for apidoc p||eval_pv
1984
1985Tells Perl to C<eval> the given string and return an SV* result.
1986
1987=cut
1988*/
1989
137443ea 1990SV*
864dbfa3 1991Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
1992{
1993 dSP;
1994 SV* sv = newSVpv(p, 0);
1995
864dbfa3 1996 eval_sv(sv, G_SCALAR);
137443ea
PP
1997 SvREFCNT_dec(sv);
1998
1999 SPAGAIN;
2000 sv = POPs;
2001 PUTBACK;
2002
2d8e6c8d
GS
2003 if (croak_on_error && SvTRUE(ERRSV)) {
2004 STRLEN n_a;
cea2e8a9 2005 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2006 }
137443ea
PP
2007
2008 return sv;
2009}
2010
4633a7c4
LW
2011/* Require a module. */
2012
954c1994
GS
2013/*
2014=for apidoc p||require_pv
2015
7d3fb230
BS
2016Tells Perl to C<require> the file named by the string argument. It is
2017analogous to the Perl code C<eval "require '$file'">. It's even
2018implemented that way; consider using Perl_load_module instead.
954c1994 2019
7d3fb230 2020=cut */
954c1994 2021
4633a7c4 2022void
864dbfa3 2023Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2024{
d3acc0f7
JP
2025 SV* sv;
2026 dSP;
e788e7d3 2027 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2028 PUTBACK;
2029 sv = sv_newmortal();
4633a7c4
LW
2030 sv_setpv(sv, "require '");
2031 sv_catpv(sv, pv);
2032 sv_catpv(sv, "'");
864dbfa3 2033 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2034 SPAGAIN;
2035 POPSTACK;
79072805
LW
2036}
2037
79072805 2038void
864dbfa3 2039Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2040{
2041 register GV *gv;
2042
155aba94 2043 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2044 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2045}
2046
76e3520e 2047STATIC void
cea2e8a9 2048S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2049{
ab821d7f 2050 /* This message really ought to be max 23 lines.
75c72d73 2051 * Removed -h because the user already knows that option. Others? */
fb73857a 2052
76e3520e 2053 static char *usage_msg[] = {
fb73857a
PP
2054"-0[octal] specify record separator (\\0, if no argument)",
2055"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2056"-C enable native wide character system interfaces",
1950ee41 2057"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2058"-d[:debugger] run program under debugger",
2059"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2060"-e 'command' one line of program (several -e's allowed, omit programfile)",
2061"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2062"-i[extension] edit <> files in place (makes backup if extension supplied)",
2063"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2064"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2065"-[mM][-]module execute `use/no module...' before executing program",
2066"-n assume 'while (<>) { ... }' loop around program",
2067"-p assume loop like -n but print line also, like sed",
2068"-P run program through C preprocessor before compilation",
2069"-s enable rudimentary parsing for switches after programfile",
2070"-S look for programfile using PATH environment variable",
2071"-T enable tainting checks",
2072"-u dump core after parsing program",
fb73857a 2073"-U allow unsafe operations",
aac3bd0d
GS
2074"-v print version, subversion (includes VERY IMPORTANT perl info)",
2075"-V[:variable] print configuration summary (or a single Config.pm variable)",
2076"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2077"-W enable all warnings",
2078"-X disable all warnings",
fb73857a
PP
2079"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2080"\n",
2081NULL
2082};
76e3520e 2083 char **p = usage_msg;
fb73857a 2084
b0e47665
GS
2085 PerlIO_printf(PerlIO_stdout(),
2086 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2087 name);
fb73857a 2088 while (*p)
b0e47665 2089 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2090}
2091
79072805
LW
2092/* This routine handles any switches that can be given during run */
2093
2094char *
864dbfa3 2095Perl_moreswitches(pTHX_ char *s)
79072805 2096{
ba210ebe 2097 STRLEN numlen;
c07a80fd 2098 U32 rschar;
79072805
LW
2099
2100 switch (*s) {
2101 case '0':
a863c7d1 2102 {
b21ed0a9 2103 numlen = 0; /* disallow underscores */
dff6d3cd 2104 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2105 SvREFCNT_dec(PL_nrs);
c07a80fd 2106 if (rschar & ~((U8)~0))
3280af22 2107 PL_nrs = &PL_sv_undef;
c07a80fd 2108 else if (!rschar && numlen >= 2)
79cb57f6 2109 PL_nrs = newSVpvn("", 0);
c07a80fd
PP
2110 else {
2111 char ch = rschar;
79cb57f6 2112 PL_nrs = newSVpvn(&ch, 1);
79072805
LW
2113 }
2114 return s + numlen;
a863c7d1 2115 }
46487f74
GS
2116 case 'C':
2117 PL_widesyscalls = TRUE;
2118 s++;
2119 return s;
2304df62 2120 case 'F':
3280af22
NIS
2121 PL_minus_F = TRUE;
2122 PL_splitstr = savepv(s + 1);
2304df62
AD
2123 s += strlen(s);
2124 return s;
79072805 2125 case 'a':
3280af22 2126 PL_minus_a = TRUE;
79072805
LW
2127 s++;
2128 return s;
2129 case 'c':
3280af22 2130 PL_minus_c = TRUE;
79072805
LW
2131 s++;
2132 return s;
2133 case 'd':
bbce6d69 2134 forbid_setid("-d");
4633a7c4 2135 s++;
70c94a19
RR
2136 /* The following permits -d:Mod to accepts arguments following an =
2137 in the fashion that -MSome::Mod does. */
2138 if (*s == ':' || *s == '=') {
2139 char *start;
2140 SV *sv;
2141 sv = newSVpv("use Devel::", 0);
2142 start = ++s;
2143 /* We now allow -d:Module=Foo,Bar */
2144 while(isALNUM(*s) || *s==':') ++s;
2145 if (*s != '=')
2146 sv_catpv(sv, start);
2147 else {
2148 sv_catpvn(sv, start, s-start);
2149 sv_catpv(sv, " split(/,/,q{");
2150 sv_catpv(sv, ++s);
2151 sv_catpv(sv, "})");
2152 }
4633a7c4 2153 s += strlen(s);
70c94a19 2154 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2155 }
ed094faf 2156 if (!PL_perldb) {
3280af22 2157 PL_perldb = PERLDB_ALL;
a0d0e21e 2158 init_debugger();
ed094faf 2159 }
79072805
LW
2160 return s;
2161 case 'D':
0453d815 2162 {
79072805 2163#ifdef DEBUGGING
bbce6d69 2164 forbid_setid("-D");
79072805 2165 if (isALPHA(s[1])) {
04932ac8
DM
2166 /* if adding extra options, remember to update DEBUG_MASK */
2167 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW
2168 char *d;
2169
93a17b20 2170 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2171 PL_debug |= 1 << (d - debopts);
79072805
LW
2172 }
2173 else {
3280af22 2174 PL_debug = atoi(s+1);
79072805
LW
2175 for (s++; isDIGIT(*s); s++) ;
2176 }
aea4f609 2177 PL_debug |= DEBUG_TOP_FLAG;
79072805 2178#else
0453d815
PM
2179 if (ckWARN_d(WARN_DEBUGGING))
2180 Perl_warner(aTHX_ WARN_DEBUGGING,
2181 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2182 for (s++; isALNUM(*s); s++) ;
79072805
LW
2183#endif
2184 /*SUPPRESS 530*/
2185 return s;
0453d815 2186 }
4633a7c4 2187 case 'h':
ac27b0f5 2188 usage(PL_origargv[0]);
6ad3d225 2189 PerlProc_exit(0);
79072805 2190 case 'i':
3280af22
NIS
2191 if (PL_inplace)
2192 Safefree(PL_inplace);
2193 PL_inplace = savepv(s+1);
79072805 2194 /*SUPPRESS 530*/
3280af22 2195 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2196 if (*s) {
fb73857a 2197 *s++ = '\0';
7b8d334a
GS
2198 if (*s == '-') /* Additional switches on #! line. */
2199 s++;
2200 }
fb73857a
PP
2201 return s;
2202 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2203 forbid_setid("-I");
fb73857a
PP
2204 ++s;
2205 while (*s && isSPACE(*s))
2206 ++s;
2207 if (*s) {
774d564b 2208 char *e, *p;
0df16ed7
GS
2209 p = s;
2210 /* ignore trailing spaces (possibly followed by other switches) */
2211 do {
2212 for (e = p; *e && !isSPACE(*e); e++) ;
2213 p = e;
2214 while (isSPACE(*p))
2215 p++;
2216 } while (*p && *p != '-');
2217 e = savepvn(s, e-s);
9c8a64f0 2218 incpush(e, TRUE, TRUE);
0df16ed7
GS
2219 Safefree(e);
2220 s = p;
2221 if (*s == '-')
2222 s++;
79072805
LW
2223 }
2224 else
a67e862a 2225 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2226 return s;
79072805 2227 case 'l':
3280af22 2228 PL_minus_l = TRUE;
79072805 2229 s++;
7889fe52
NIS
2230 if (PL_ors_sv) {
2231 SvREFCNT_dec(PL_ors_sv);
2232 PL_ors_sv = Nullsv;
2233 }
79072805 2234 if (isDIGIT(*s)) {
7889fe52 2235 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2236 numlen = 0; /* disallow underscores */
7889fe52 2237 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW
2238 s += numlen;
2239 }
2240 else {
3280af22 2241 if (RsPARA(PL_nrs)) {
7889fe52
NIS
2242 PL_ors_sv = newSVpvn("\n\n",2);
2243 }
2244 else {
2245 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2246 }
79072805
LW
2247 }
2248 return s;
1a30305b 2249 case 'M':
bbce6d69 2250 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2251 /* FALL THROUGH */
2252 case 'm':
bbce6d69 2253 forbid_setid("-m"); /* XXX ? */
1a30305b 2254 if (*++s) {
a5f75d66 2255 char *start;
11343788 2256 SV *sv;
a5f75d66
AD
2257 char *use = "use ";
2258 /* -M-foo == 'no foo' */
2259 if (*s == '-') { use = "no "; ++s; }
11343788 2260 sv = newSVpv(use,0);
a5f75d66 2261 start = s;
1a30305b 2262 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2263 while(isALNUM(*s) || *s==':') ++s;
2264 if (*s != '=') {
11343788 2265 sv_catpv(sv, start);
c07a80fd
PP
2266 if (*(start-1) == 'm') {
2267 if (*s != '\0')
cea2e8a9 2268 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2269 sv_catpv( sv, " ()");
c07a80fd
PP
2270 }
2271 } else {
6df41af2 2272 if (s == start)
be98fb35
GS
2273 Perl_croak(aTHX_ "Module name required with -%c option",
2274 s[-1]);
11343788
MB
2275 sv_catpvn(sv, start, s-start);
2276 sv_catpv(sv, " split(/,/,q{");
2277 sv_catpv(sv, ++s);
2278 sv_catpv(sv, "})");
c07a80fd 2279 }
1a30305b 2280 s += strlen(s);
5c831c24 2281 if (!PL_preambleav)
3280af22
NIS
2282 PL_preambleav = newAV();
2283 av_push(PL_preambleav, sv);
1a30305b
PP
2284 }
2285 else
cea2e8a9 2286 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2287 return s;
79072805 2288 case 'n':
3280af22 2289 PL_minus_n = TRUE;
79072805
LW
2290 s++;
2291 return s;
2292 case 'p':
3280af22 2293 PL_minus_p = TRUE;
79072805
LW
2294 s++;
2295 return s;
2296 case 's':
bbce6d69 2297 forbid_setid("-s");
3280af22 2298 PL_doswitches = TRUE;
79072805
LW
2299 s++;
2300 return s;
463ee0b2 2301 case 'T':
3280af22 2302 if (!PL_tainting)
cea2e8a9 2303 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2304 s++;
2305 return s;
79072805 2306 case 'u':
bf4acbe4
GS
2307#ifdef MACOS_TRADITIONAL
2308 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2309#endif
3280af22 2310 PL_do_undump = TRUE;
79072805
LW
2311 s++;
2312 return s;
2313 case 'U':
3280af22 2314 PL_unsafe = TRUE;
79072805
LW
2315 s++;
2316 return s;
2317 case 'v':
8e9464f1 2318#if !defined(DGUX)
b0e47665 2319 PerlIO_printf(PerlIO_stdout(),
d2560b70 2320 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2321 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2322#else /* DGUX */
2323/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2324 PerlIO_printf(PerlIO_stdout(),
2325 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2326 PerlIO_printf(PerlIO_stdout(),
2327 Perl_form(aTHX_ " built under %s at %s %s\n",
2328 OSNAME, __DATE__, __TIME__));
2329 PerlIO_printf(PerlIO_stdout(),
2330 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2331 OSVERS));
8e9464f1
JH
2332#endif /* !DGUX */
2333
fb73857a
PP
2334#if defined(LOCAL_PATCH_COUNT)
2335 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2336 PerlIO_printf(PerlIO_stdout(),
2337 "\n(with %d registered patch%s, "
2338 "see perl -V for more detail)",
2339 (int)LOCAL_PATCH_COUNT,
2340 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2341#endif
1a30305b 2342
b0e47665 2343 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2344 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH
2345#ifdef MACOS_TRADITIONAL
2346 PerlIO_printf(PerlIO_stdout(),
084592ab 2347 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2348#endif
79072805 2349#ifdef MSDOS
b0e47665
GS
2350 PerlIO_printf(PerlIO_stdout(),
2351 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2352#endif
2353#ifdef DJGPP
b0e47665
GS
2354 PerlIO_printf(PerlIO_stdout(),
2355 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2356 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2357#endif
79072805 2358#ifdef OS2
b0e47665
GS
2359 PerlIO_printf(PerlIO_stdout(),
2360 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2361 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2362#endif
79072805 2363#ifdef atarist
b0e47665
GS
2364 PerlIO_printf(PerlIO_stdout(),
2365 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2366#endif
a3f9223b 2367#ifdef __BEOS__
b0e47665
GS
2368 PerlIO_printf(PerlIO_stdout(),
2369 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2370#endif
1d84e8df 2371#ifdef MPE
b0e47665 2372 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2373 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2374#endif
9d116dd7 2375#ifdef OEMVS
b0e47665
GS
2376 PerlIO_printf(PerlIO_stdout(),
2377 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2378#endif
495c5fdc 2379#ifdef __VOS__
b0e47665
GS
2380 PerlIO_printf(PerlIO_stdout(),
2381 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2382#endif
092bebab 2383#ifdef __OPEN_VM
b0e47665
GS
2384 PerlIO_printf(PerlIO_stdout(),
2385 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2386#endif
a1a0e61e 2387#ifdef POSIX_BC
b0e47665
GS
2388 PerlIO_printf(PerlIO_stdout(),
2389 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2390#endif
61ae2fbf 2391#ifdef __MINT__
b0e47665
GS
2392 PerlIO_printf(PerlIO_stdout(),
2393 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2394#endif
f83d2536 2395#ifdef EPOC
b0e47665
GS
2396 PerlIO_printf(PerlIO_stdout(),
2397 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2398#endif
baed7233
DL
2399#ifdef BINARY_BUILD_NOTICE
2400 BINARY_BUILD_NOTICE;
2401#endif
b0e47665
GS
2402 PerlIO_printf(PerlIO_stdout(),
2403 "\n\
79072805 2404Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2405GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2406Complete documentation for Perl, including FAQ lists, should be found on\n\
2407this system using `man perl' or `perldoc perl'. If you have access to the\n\
2408Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2409 PerlProc_exit(0);
79072805 2410 case 'w':
599cee73 2411 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2412 PL_dowarn |= G_WARN_ON;
599cee73
PM
2413 s++;
2414 return s;
2415 case 'W':
ac27b0f5 2416 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2417 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2418 s++;
2419 return s;
2420 case 'X':
ac27b0f5 2421 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2422 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2423 s++;
2424 return s;
a0d0e21e 2425 case '*':
79072805
LW
2426 case ' ':
2427 if (s[1] == '-') /* Additional switches on #! line. */
2428 return s+2;
2429 break;
a0d0e21e 2430 case '-':
79072805 2431 case 0:
51882d45 2432#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2433 case '\r':
2434#endif
79072805
LW
2435 case '\n':
2436 case '\t':
2437 break;
aa689395
PP
2438#ifdef ALTERNATE_SHEBANG
2439 case 'S': /* OS/2 needs -S on "extproc" line. */
2440 break;
2441#endif
a0d0e21e 2442 case 'P':
3280af22 2443 if (PL_preprocess)
a0d0e21e
LW
2444 return s+1;
2445 /* FALL THROUGH */
79072805 2446 default:
cea2e8a9 2447 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2448 }
2449 return Nullch;
2450}
2451
2452/* compliments of Tom Christiansen */
2453
2454/* unexec() can be found in the Gnu emacs distribution */
ee580363 2455/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2456
2457void
864dbfa3 2458Perl_my_unexec(pTHX)
79072805
LW
2459{
2460#ifdef UNEXEC
46fc3d4c
PP
2461 SV* prog;
2462 SV* file;
ee580363 2463 int status = 1;
79072805
LW
2464 extern int etext;
2465
ee580363 2466 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2467 sv_catpv(prog, "/perl");
6b88bc9c 2468 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2469 sv_catpv(file, ".perldump");
79072805 2470
ee580363
GS
2471 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2472 /* unexec prints msg to stderr in case of failure */
6ad3d225 2473 PerlProc_exit(status);
79072805 2474#else
a5f75d66
AD
2475# ifdef VMS
2476# include <lib$routines.h>
2477 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2478# else
79072805 2479 ABORT(); /* for use with undump */
aa689395 2480# endif
a5f75d66 2481#endif
79072805
LW
2482}
2483
cb68f92d
GS
2484/* initialize curinterp */
2485STATIC void
cea2e8a9 2486S_init_interp(pTHX)
cb68f92d
GS
2487{
2488
066ef5b5 2489#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2490#define I_REINIT \
6b88bc9c
GS
2491 STMT_START { \
2492 PL_chopset = " \n-"; \
2493 PL_copline = NOLINE; \
2494 PL_curcop = &PL_compiling;\
2495 PL_curcopdb = NULL; \
2496 PL_dbargs = 0; \
3967c732 2497 PL_dumpindent = 4; \
6b88bc9c
GS
2498 PL_laststatval = -1; \
2499 PL_laststype = OP_STAT; \
2500 PL_maxscream = -1; \
2501 PL_maxsysfd = MAXSYSFD; \
2502 PL_statname = Nullsv; \
2503 PL_tmps_floor = -1; \
2504 PL_tmps_ix = -1; \
2505 PL_op_mask = NULL; \
6b88bc9c
GS
2506 PL_laststatval = -1; \
2507 PL_laststype = OP_STAT; \
2508 PL_mess_sv = Nullsv; \
2509 PL_splitstr = " "; \
2510 PL_generation = 100; \
2511 PL_exitlist = NULL; \
2512 PL_exitlistlen = 0; \
2513 PL_regindent = 0; \
2514 PL_in_clean_objs = FALSE; \
2515 PL_in_clean_all = FALSE; \
2516 PL_profiledata = NULL; \
2517 PL_rsfp = Nullfp; \
2518 PL_rsfp_filters = Nullav; \
24d3c518 2519 PL_dirty = FALSE; \
cb68f92d 2520 } STMT_END
9666903d 2521 I_REINIT;
066ef5b5
GS
2522#else
2523# ifdef MULTIPLICITY
2524# define PERLVAR(var,type)
51371543 2525# define PERLVARA(var,n,type)
cea2e8a9 2526# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS
2527# if defined(USE_THREADS)
2528# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2529# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2530# else /* !USE_THREADS */
2531# define PERLVARI(var,type,init) aTHX->var = init;
2532# define PERLVARIC(var,type,init) aTHX->var = init;
2533# endif /* USE_THREADS */
cea2e8a9 2534# else
c5be433b
GS
2535# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2536# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2537# endif
066ef5b5
GS
2538# include "intrpvar.h"
2539# ifndef USE_THREADS
2540# include "thrdvar.h"
2541# endif
2542# undef PERLVAR
51371543 2543# undef PERLVARA
066ef5b5
GS
2544# undef PERLVARI
2545# undef PERLVARIC
3967c732 2546# else
066ef5b5 2547# define PERLVAR(var,type)
51371543 2548# define PERLVARA(var,n,type)
533c011a
NIS
2549# define PERLVARI(var,type,init) PL_##var = init;
2550# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS
2551# include "intrpvar.h"
2552# ifndef USE_THREADS
2553# include "thrdvar.h"
2554# endif
2555# undef PERLVAR
51371543 2556# undef PERLVARA
066ef5b5
GS
2557# undef PERLVARI
2558# undef PERLVARIC
2559# endif
cb68f92d
GS
2560#endif
2561
cb68f92d
GS
2562}
2563
76e3520e 2564STATIC void
cea2e8a9 2565S_init_main_stash(pTHX)
79072805 2566{
463ee0b2 2567 GV *gv;
6e72f9df
PP
2568
2569 /* Note that strtab is a rather special HV. Assumptions are made
2570 about not iterating on it, and not adding tie magic to it.
2571 It is properly deallocated in perl_destruct() */
3280af22 2572 PL_strtab = newHV();
5f08fbcd
GS
2573#ifdef USE_THREADS
2574 MUTEX_INIT(&PL_strtab_mutex);
2575#endif
3280af22
NIS
2576 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2577 hv_ksplit(PL_strtab, 512);
ac27b0f5 2578
3280af22 2579 PL_curstash = PL_defstash = newHV();
79cb57f6 2580 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2581 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2582 SvREFCNT_dec(GvHV(gv));
3280af22 2583 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2584 SvREADONLY_on(gv);
3280af22
NIS
2585 HvNAME(PL_defstash) = savepv("main");
2586 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2587 GvMULTI_on(PL_incgv);
2588 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2589 GvMULTI_on(PL_hintgv);
2590 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2591 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2592 GvMULTI_on(PL_errgv);
2593 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2594 GvMULTI_on(PL_replgv);
cea2e8a9 2595 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2596 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2597 sv_setpvn(ERRSV, "", 0);
3280af22 2598 PL_curstash = PL_defstash;
11faa288 2599 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2600 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2601 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2602 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2603 /* We must init $/ before switches are processed. */
864dbfa3 2604 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2605}
2606
76e3520e 2607STATIC void
cea2e8a9 2608S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2609{
6c4ab083 2610 *fdscript = -1;
79072805 2611
3280af22
NIS
2612 if (PL_e_script) {
2613 PL_origfilename = savepv("-e");
96436eeb 2614 }
6c4ab083
GS
2615 else {
2616 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2617 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2618
2619 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2620 char *s = scriptname + 8;
2621 *fdscript = atoi(s);
2622 while (isDIGIT(*s))
2623 s++;
2624 if (*s) {
2625 scriptname = savepv(s + 1);
3280af22
NIS
2626 Safefree(PL_origfilename);
2627 PL_origfilename = scriptname;
6c4ab083
GS
2628 }
2629 }
2630 }
2631
f4dd75d9
GS
2632#ifdef USE_ITHREADS
2633 Safefree(CopFILE(PL_curcop));
2634#else
2635 SvREFCNT_dec(CopFILEGV(PL_curcop));
2636#endif
57843af0 2637 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2638 if (strEQ(PL_origfilename,"-"))
79072805 2639 scriptname = "";
01f988be 2640 if (*fdscript >= 0) {
3280af22 2641 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2642#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2643 if (PL_rsfp)
2644 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2645#endif
2646 }
3280af22 2647 else if (PL_preprocess) {
46fc3d4c 2648 char *cpp_cfg = CPPSTDIN;
79cb57f6 2649 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2650 SV *cmd = NEWSV(0,0);
2651
2652 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2653 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2654 sv_catpv(cpp, cpp_cfg);
79072805 2655
0df16ed7 2656 sv_catpvn(sv, "-I", 2);
fed7345c 2657 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2658
14953ddc
MB
2659 DEBUG_P(PerlIO_printf(Perl_debug_log,
2660 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2661 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2662#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2663 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2664sed %s -e \"/^[^#]/b\" \
2665 -e \"/^#[ ]*include[ ]/b\" \
2666 -e \"/^#[ ]*define[ ]/b\" \
2667 -e \"/^#[ ]*if[ ]/b\" \
2668 -e \"/^#[ ]*ifdef[ ]/b\" \
2669 -e \"/^#[ ]*ifndef[ ]/b\" \
2670 -e \"/^#[ ]*else/b\" \
2671 -e \"/^#[ ]*elif[ ]/b\" \
2672 -e \"/^#[ ]*undef[ ]/b\" \
2673 -e \"/^#[ ]*endif/b\" \
2674 -e \"s/^#.*//\" \
894356b3 2675 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2676 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2677#else
092bebab 2678# ifdef __OPEN_VM
cea2e8a9 2679 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2680%s %s -e '/^[^#]/b' \
2681 -e '/^#[ ]*include[ ]/b' \
2682 -e '/^#[ ]*define[ ]/b' \
2683 -e '/^#[ ]*if[ ]/b' \
2684 -e '/^#[ ]*ifdef[ ]/b' \
2685 -e '/^#[ ]*ifndef[ ]/b' \
2686 -e '/^#[ ]*else/b' \
2687 -e '/^#[ ]*elif[ ]/b' \
2688 -e '/^#[ ]*undef[ ]/b' \
2689 -e '/^#[ ]*endif/b' \
2690 -e 's/^[ ]*#.*//' \
894356b3 2691 %s | %"SVf" %"SVf" %s",
092bebab 2692# else
cea2e8a9 2693 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2694%s %s -e '/^[^#]/b' \
2695 -e '/^#[ ]*include[ ]/b' \
2696 -e '/^#[ ]*define[ ]/b' \
2697 -e '/^#[ ]*if[ ]/b' \
2698 -e '/^#[ ]*ifdef[ ]/b' \
2699 -e '/^#[ ]*ifndef[ ]/b' \
2700 -e '/^#[ ]*else/b' \
2701 -e '/^#[ ]*elif[ ]/b' \
2702 -e '/^#[ ]*undef[ ]/b' \
2703 -e '/^#[ ]*endif/b' \
2704 -e 's/^[ ]*#.*//' \
894356b3 2705 %s | %"SVf" -C %"SVf" %s",
092bebab 2706# endif
79072805
LW
2707#ifdef LOC_SED
2708 LOC_SED,
2709#else
2710 "sed",
2711#endif
3280af22 2712 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2713#endif
46fc3d4c 2714 scriptname, cpp, sv, CPPMINUS);
3280af22 2715 PL_doextract = FALSE;
79072805 2716#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2717 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2718#ifdef HAS_SETEUID
b28d0864 2719 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2720#else
2721#ifdef HAS_SETREUID
b28d0864 2722 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2723#else
2724#ifdef HAS_SETRESUID
b28d0864 2725 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2726#else
b28d0864 2727 PerlProc_setuid(PL_uid);
79072805
LW
2728#endif
2729#endif
85e6fe83 2730#endif
b28d0864 2731 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2732 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2733 }
2734#endif /* IAMSUID */
3280af22 2735 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2736 SvREFCNT_dec(cmd);
2737 SvREFCNT_dec(cpp);
79072805
LW
2738 }
2739 else if (!*scriptname) {
bbce6d69 2740 forbid_setid("program input from stdin");
3280af22 2741 PL_rsfp = PerlIO_stdin();
79072805 2742 }
96436eeb 2743 else {
3280af22 2744 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2745#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2746 if (PL_rsfp)
2747 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2748#endif
2749 }
3280af22 2750 if (!PL_rsfp) {
13281fa4 2751#ifdef DOSUID
a687059c 2752#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2753 if (PL_euid &&
cc49e20b 2754 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2755 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2756 {
46fc3d4c 2757 /* try again */
a7cb1f99 2758 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2759 (int)PERL_REVISION, (int)PERL_VERSION,
2760 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2761 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2762 }
2763#endif
2764#endif
584d69ec
JH
2765#ifdef IAMSUID
2766 errno = EPERM;
2767 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2768 Strerror(errno));
2769#else
cea2e8a9 2770 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2771 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2772#endif
13281fa4 2773 }
79072805 2774}
8d063cd8 2775
7b89560d
JH
2776/* Mention
2777 * I_SYSSTATVFS HAS_FSTATVFS
2778 * I_SYSMOUNT
c890dc6c 2779 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2780 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2781 * here so that metaconfig picks them up. */
2782
104d25b7 2783#ifdef IAMSUID
864dbfa3 2784STATIC int
e688b231 2785S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2786{
0545a864
JH
2787 int check_okay = 0; /* able to do all the required sys/libcalls */
2788 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2789/*
ad27e871 2790 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2791 * fstatvfs() is UNIX98.
0545a864 2792 * fstatfs() is 4.3 BSD.
ad27e871 2793 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2794 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2795 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2796 */
2797
6439433f
JH
2798#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2799
2800# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2801 defined(HAS_FSTATVFS)
2802# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2803 struct statvfs stfs;
6439433f 2804
104d25b7
JH
2805 check_okay = fstatvfs(fd, &stfs) == 0;
2806 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2807# endif /* fstatvfs */
ac27b0f5 2808
6439433f
JH
2809# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2810 defined(PERL_MOUNT_NOSUID) && \
2811 defined(HAS_FSTATFS) && \
2812 defined(HAS_STRUCT_STATFS) && \
2813 defined(HAS_STRUCT_STATFS_F_FLAGS)
2814# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2815 struct statfs stfs;
6439433f 2816
104d25b7 2817 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2818 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2819# endif /* fstatfs */
2820
2821# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2822 defined(PERL_MOUNT_NOSUID) && \
2823 defined(HAS_FSTAT) && \
2824 defined(HAS_USTAT) && \
2825 defined(HAS_GETMNT) && \
2826 defined(HAS_STRUCT_FS_DATA) && \
2827 defined(NOSTAT_ONE)
2828# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2829 struct stat fdst;
6439433f 2830
0545a864 2831 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2832 struct ustat us;
2833 if (ustat(fdst.st_dev, &us) == 0) {
2834 struct fs_data fsd;
2835 /* NOSTAT_ONE here because we're not examining fields which
2836 * vary between that case and STAT_ONE. */
ad27e871 2837 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2838 size_t cmplen = sizeof(us.f_fname);
2839 if (sizeof(fsd.fd_req.path) < cmplen)
2840 cmplen = sizeof(fsd.fd_req.path);
2841 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2842 fdst.st_dev == fsd.fd_req.dev) {
2843 check_okay = 1;
2844 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2845 }
2846 }
2847 }
2848 }
0545a864 2849 }
6439433f
JH
2850# endif /* fstat+ustat+getmnt */
2851
2852# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2853 defined(HAS_GETMNTENT) && \
2854 defined(HAS_HASMNTOPT) && \
2855 defined(MNTOPT_NOSUID)
2856# define FD_ON_NOSUID_CHECK_OKAY
2857 FILE *mtab = fopen("/etc/mtab", "r");
2858 struct mntent *entry;
2859 struct stat stb, fsb;
104d25b7
JH
2860
2861 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2862 while (entry = getmntent(mtab)) {
2863 if (stat(entry->mnt_dir, &fsb) == 0
2864 && fsb.st_dev == stb.st_dev)
2865 {
2866 /* found the filesystem */
2867 check_okay = 1;
2868 if (hasmntopt(entry, MNTOPT_NOSUID))
2869 on_nosuid = 1;
2870 break;
2871 } /* A single fs may well fail its stat(). */
2872 }
104d25b7
JH
2873 }
2874 if (mtab)
6439433f
JH
2875 fclose(mtab);
2876# endif /* getmntent+hasmntopt */
0545a864 2877
ac27b0f5 2878 if (!check_okay)
0545a864 2879 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2880 return on_nosuid;
2881}
2882#endif /* IAMSUID */
2883
76e3520e 2884STATIC void
cea2e8a9 2885S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2886{
155aba94 2887#ifdef IAMSUID
96436eeb 2888 int which;
155aba94 2889#endif
96436eeb 2890
13281fa4
LW
2891 /* do we need to emulate setuid on scripts? */
2892
2893 /* This code is for those BSD systems that have setuid #! scripts disabled
2894 * in the kernel because of a security problem. Merely defining DOSUID
2895 * in perl will not fix that problem, but if you have disabled setuid
2896 * scripts in the kernel, this will attempt to emulate setuid and setgid
2897 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2898 * root version must be called suidperl or sperlN.NNN. If regular perl
2899 * discovers that it has opened a setuid script, it calls suidperl with
2900 * the same argv that it had. If suidperl finds that the script it has
2901 * just opened is NOT setuid root, it sets the effective uid back to the
2902 * uid. We don't just make perl setuid root because that loses the
2903 * effective uid we had before invoking perl, if it was different from the
2904 * uid.
13281fa4
LW
2905 *
2906 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2907 * be defined in suidperl only. suidperl must be setuid root. The
2908 * Configure script will set this up for you if you want it.
2909 */
a687059c 2910
13281fa4 2911#ifdef DOSUID
6e72f9df 2912 char *s, *s2;
a0d0e21e 2913
b28d0864 2914 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2915 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2916 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2917 I32 len;
2d8e6c8d 2918 STRLEN n_a;
13281fa4 2919
a687059c 2920#ifdef IAMSUID
fe14fcc3 2921#ifndef HAS_SETREUID
a687059c
LW
2922 /* On this access check to make sure the directories are readable,
2923 * there is actually a small window that the user could use to make
2924 * filename point to an accessible directory. So there is a faint
2925 * chance that someone could execute a setuid script down in a
2926 * non-accessible directory. I don't know what to do about that.
2927 * But I don't think it's too important. The manual lies when
2928 * it says access() is useful in setuid programs.
2929 */
cc49e20b 2930 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2931 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2932#else
2933 /* If we can swap euid and uid, then we can determine access rights
2934 * with a simple stat of the file, and then compare device and
2935 * inode to make sure we did stat() on the same file we opened.
2936 * Then we just have to make sure he or she can execute it.
2937 */
2938 {
2939 struct stat tmpstatbuf;
2940
85e6fe83
LW
2941 if (
2942#ifdef HAS_SETREUID
b28d0864 2943 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2944#else
2945# if HAS_SETRESUID
b28d0864 2946 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2947# endif
85e6fe83 2948#endif
b28d0864 2949 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2950 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2951 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2952 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2953#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2954 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2955 Perl_croak(aTHX_ "Permission denied");
104d25b7 2956#endif
b28d0864
NIS
2957 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2958 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2959 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2960 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2961 }
85e6fe83
LW
2962 if (
2963#ifdef HAS_SETREUID
b28d0864 2964 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
2965#else
2966# if defined(HAS_SETRESUID)
b28d0864 2967 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2968# endif
85e6fe83 2969#endif
b28d0864 2970 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2971 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2972 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2973 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2974 }
fe14fcc3 2975#endif /* HAS_SETREUID */
a687059c
LW
2976#endif /* IAMSUID */
2977
b28d0864 2978 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2979 Perl_croak(aTHX_ "Permission denied");
b28d0864 2980 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2981 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2982 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2983 CopLINE_inc(PL_curcop);
6b88bc9c 2984 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2985 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2986 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2987 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2988 if (*s == ' ') s++;
45d8adaa 2989 while (!isSPACE(*s)) s++;
2d8e6c8d 2990 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
2991 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2992 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2993 Perl_croak(aTHX_ "Not a perl script");
a687059c 2994 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
2995 /*
2996 * #! arg must be what we saw above. They can invoke it by
2997 * mentioning suidperl explicitly, but they may not add any strange
2998 * arguments beyond what #! says if they do invoke suidperl that way.
2999 */
3000 len = strlen(validarg);
3001 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3002 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3003 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
3004
3005#ifndef IAMSUID
b28d0864
NIS
3006 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3007 PL_euid == PL_statbuf.st_uid)
3008 if (!PL_do_undump)
cea2e8a9 3009 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3010FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3011#endif /* IAMSUID */
13281fa4 3012
b28d0864
NIS
3013 if (PL_euid) { /* oops, we're not the setuid root perl */
3014 (void)PerlIO_close(PL_rsfp);
13281fa4 3015#ifndef IAMSUID
46fc3d4c 3016 /* try again */
a7cb1f99 3017 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3018 (int)PERL_REVISION, (int)PERL_VERSION,
3019 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3020#endif
cea2e8a9 3021 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
3022 }
3023
b28d0864 3024 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3025#ifdef HAS_SETEGID
b28d0864 3026 (void)setegid(PL_statbuf.st_gid);
a687059c 3027#else
fe14fcc3 3028#ifdef HAS_SETREGID
b28d0864 3029 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3030#else
3031#ifdef HAS_SETRESGID
b28d0864 3032 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3033#else
b28d0864 3034 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3035#endif
3036#endif
85e6fe83 3037#endif
b28d0864 3038 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3039 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3040 }
b28d0864
NIS
3041 if (PL_statbuf.st_mode & S_ISUID) {
3042 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3043#ifdef HAS_SETEUID
b28d0864 3044 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3045#else
fe14fcc3 3046#ifdef HAS_SETREUID
b28d0864 3047 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3048#else
3049#ifdef HAS_SETRESUID
b28d0864 3050 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3051#else
b28d0864 3052 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3053#endif
3054#endif
85e6fe83 3055#endif
b28d0864 3056 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3057 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3058 }
b28d0864 3059 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3060#ifdef HAS_SETEUID
b28d0864 3061 (void)seteuid((Uid_t)PL_uid);
a687059c 3062#else
fe14fcc3 3063#ifdef HAS_SETREUID
b28d0864 3064 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3065#else
85e6fe83 3066#ifdef HAS_SETRESUID
b28d0864 3067 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3068#else
b28d0864 3069 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3070#endif
a687059c
LW
3071#endif
3072#endif
b28d0864 3073 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3074 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3075 }
748a9306 3076 init_ids();
b28d0864 3077 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3078 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3079 }
3080#ifdef IAMSUID
6b88bc9c 3081 else if (PL_preprocess)
cea2e8a9 3082 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3083 else if (fdscript >= 0)
cea2e8a9 3084 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3085 else
cea2e8a9 3086 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3087
3088 /* We absolutely must clear out any saved ids here, so we */
3089 /* exec the real perl, substituting fd script for scriptname. */
3090 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3091 PerlIO_rewind(PL_rsfp);
3092 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3093 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3094 if (!PL_origargv[which])
cea2e8a9
GS
3095 Perl_croak(aTHX_ "Permission denied");
3096 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3097 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3098#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3099 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3100#endif
a7cb1f99 3101 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3102 (int)PERL_REVISION, (int)PERL_VERSION,
3103 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3104 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3105#endif /* IAMSUID */
a687059c 3106#else /* !DOSUID */
3280af22 3107 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3108#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3109 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3110 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3111 ||
b28d0864 3112 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3113 )
b28d0864 3114 if (!PL_do_undump)
cea2e8a9 3115 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3116FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3117#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3118 /* not set-id, must be wrapped */
a687059c 3119 }
13281fa4 3120#endif /* DOSUID */
79072805 3121}
13281fa4 3122
76e3520e 3123STATIC void
cea2e8a9 3124S_find_beginning(pTHX)
79072805 3125{
6e72f9df 3126 register char *s, *s2;
33b78306
LW
3127
3128 /* skip forward in input to the real script? */
3129
bbce6d69 3130 forbid_setid("-x");
bf4acbe4 3131#ifdef MACOS_TRADITIONAL
084592ab 3132 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3133
bf4acbe4
GS
3134 while (PL_doextract || gMacPerl_AlwaysExtract) {
3135 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3136 if (!gMacPerl_AlwaysExtract)
3137 Perl_croak(aTHX_ "No Perl script found in input\n");
3138
3139 if (PL_doextract) /* require explicit override ? */
3140 if (!OverrideExtract(PL_origfilename))
3141 Perl_croak(aTHX_ "User aborted script\n");
3142 else
3143 PL_doextract = FALSE;
3144
3145 /* Pater peccavi, file does not have #! */
3146 PerlIO_rewind(PL_rsfp);
ac27b0f5 3147
bf4acbe4
GS
3148 break;
3149 }
3150#else
3280af22
NIS
3151 while (PL_doextract) {
3152 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3153 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3154#endif
4f0c37ba
IZ
3155 s2 = s;
3156 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS
3157 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3158 PL_doextract = FALSE;
6e72f9df
PP
3159 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3160 s2 = s;
3161 while (*s == ' ' || *s == '\t') s++;
3162 if (*s++ == '-') {
3163 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3164 if (strnEQ(s2-4,"perl",4))
3165 /*SUPPRESS 530*/
155aba94
GS
3166 while ((s = moreswitches(s)))
3167 ;
33b78306 3168 }
95e8664e
CN
3169#ifdef MACOS_TRADITIONAL
3170 break;
3171#endif
83025b21
LW
3172 }
3173 }
3174}
3175
afe37c7d 3176
76e3520e 3177STATIC void
cea2e8a9 3178S_init_ids(pTHX)
352d5a3a 3179{
d8eceb89
JH
3180 PL_uid = PerlProc_getuid();
3181 PL_euid = PerlProc_geteuid();
3182 PL_gid = PerlProc_getgid();
3183 PL_egid = PerlProc_getegid();
748a9306 3184#ifdef VMS
b28d0864
NIS
3185 PL_uid |= PL_gid << 16;
3186 PL_euid |= PL_egid << 16;
748a9306 3187#endif
3280af22 3188 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3189}
79072805 3190
76e3520e 3191STATIC void
cea2e8a9 3192S_forbid_setid(pTHX_ char *s)
bbce6d69 3193{
3280af22 3194 if (PL_euid != PL_uid)
cea2e8a9 3195 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3196 if (PL_egid != PL_gid)
cea2e8a9 3197 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3198}
3199
1ee4443e
IZ
3200void
3201Perl_init_debugger(pTHX)
748a9306 3202{
1ee4443e
IZ
3203 HV *ostash = PL_curstash;
3204
3280af22
NIS
3205 PL_curstash = PL_debstash;
3206 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3207 AvREAL_off(PL_dbargs);
3208 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3209 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3210 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3211 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3212 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3213 sv_setiv(PL_DBsingle, 0);
3280af22 3214 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3215 sv_setiv(PL_DBtrace, 0);
3280af22 3216 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3217 sv_setiv(PL_DBsignal, 0);
1ee4443e 3218 PL_curstash = ostash;
352d5a3a
LW
3219}
3220
2ce36478
SM
3221#ifndef STRESS_REALLOC
3222#define REASONABLE(size) (size)
3223#else
3224#define REASONABLE(size) (1) /* unreasonable */
3225#endif
3226
11343788 3227void
cea2e8a9 3228Perl_init_stacks(pTHX)
79072805 3229{
e336de0d 3230 /* start with 128-item stack and 8K cxstack */
3280af22 3231 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3232 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3233 PL_curstackinfo->si_type = PERLSI_MAIN;
3234 PL_curstack = PL_curstackinfo->si_stack;
3235 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3236
3280af22
NIS
3237 PL_stack_base = AvARRAY(PL_curstack);
3238 PL_stack_sp = PL_stack_base;
3239 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3240
3280af22
NIS
3241 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3242 PL_tmps_floor = -1;
3243 PL_tmps_ix = -1;
3244 PL_tmps_max = REASONABLE(128);
8990e307 3245
3280af22
NIS
3246 New(54,PL_markstack,REASONABLE(32),I32);
3247 PL_markstack_ptr = PL_markstack;
3248 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3249
ce2f7c3b 3250 SET_MARK_OFFSET;
e336de0d 3251
3280af22
NIS
3252 New(54,PL_scopestack,REASONABLE(32),I32);
3253 PL_scopestack_ix = 0;
3254 PL_scopestack_max = REASONABLE(32);
79072805 3255
3280af22
NIS
3256 New(54,PL_savestack,REASONABLE(128),ANY);
3257 PL_savestack_ix = 0;
3258 PL_savestack_max = REASONABLE(128);
79072805 3259
3280af22
NIS
3260 New(54,PL_retstack,REASONABLE(16),OP*);
3261 PL_retstack_ix = 0;
3262 PL_retstack_max = REASONABLE(16);
378cc40b 3263}
33b78306 3264
2ce36478
SM
3265#undef REASONABLE
3266
76e3520e 3267STATIC void
cea2e8a9 3268S_nuke_stacks(pTHX)
6e72f9df 3269{
3280af22
NIS
3270 while (PL_curstackinfo->si_next)
3271 PL_curstackinfo = PL_curstackinfo->si_next;
3272 while (PL_curstackinfo) {
3273 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3274 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3275 Safefree(PL_curstackinfo->si_cxstack);
3276 Safefree(PL_curstackinfo);
3277 PL_curstackinfo = p;
e336de0d 3278 }
3280af22
NIS
3279 Safefree(PL_tmps_stack);
3280 Safefree(PL_markstack);
3281 Safefree(PL_scopestack);
3282 Safefree(PL_savestack);
3283 Safefree(PL_retstack);
378cc40b 3284}
33b78306 3285
76e3520e 3286#ifndef PERL_OBJECT
760ac839 3287static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3288#endif
7aa04957 3289
76e3520e 3290STATIC void
cea2e8a9 3291S_init_lexer(pTHX)
8990e307 3292{
76e3520e
GS
3293#ifdef PERL_OBJECT
3294 PerlIO *tmpfp;
3295#endif
3280af22
NIS
3296 tmpfp = PL_rsfp;
3297 PL_rsfp = Nullfp;
3298 lex_start(PL_linestr);
3299 PL_rsfp = tmpfp;
79cb57f6 3300 PL_subname = newSVpvn("main",4);
8990e307
LW
3301}
3302
76e3520e 3303STATIC void
cea2e8a9 3304S_init_predump_symbols(pTHX)
45d8adaa 3305{
93a17b20 3306 GV *tmpgv;
af8c498a 3307 IO *io;
79072805 3308
864dbfa3 3309 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3310 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3311 GvMULTI_on(PL_stdingv);
af8c498a 3312 io = GvIOp(PL_stdingv);
a04651f4 3313 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3314 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3315 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3316 GvMULTI_on(tmpgv);
af8c498a 3317 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3318
85e6fe83 3319 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3320 GvMULTI_on(tmpgv);
af8c498a 3321 io = GvIOp(tmpgv);
a04651f4 3322 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3323 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3324 setdefout(tmpgv);
adbc6bb1 3325 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3326 GvMULTI_on(tmpgv);
af8c498a 3327 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3328
bf49b057
GS
3329 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3330 GvMULTI_on(PL_stderrgv);
3331 io = GvIOp(PL_stderrgv);
a04651f4 3332 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3333 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3334 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3335 GvMULTI_on(tmpgv);
af8c498a 3336 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3337
3280af22 3338 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3339
bf4acbe4
GS
3340 if (PL_osname)
3341 Safefree(PL_osname);
3342 PL_osname = savepv(OSNAME);
79072805 3343}
33b78306 3344
76e3520e 3345STATIC void
cea2e8a9 3346S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3347{
79072805
LW
3348 char *s;
3349 SV *sv;
3350 GV* tmpgv;
9cbac4c7 3351#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3352 char **dup_env_base = 0;
103a7189 3353 int dup_env_count = 0;
9cbac4c7 3354#endif
fe14fcc3 3355
79072805 3356 argc--,argv++; /* skip name of script */
3280af22 3357 if (PL_doswitches) {
79072805
LW
3358 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3359 if (!argv[0][1])
3360 break;
379d538a 3361 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3362 argc--,argv++;
3363 break;
3364 }
155aba94 3365 if ((s = strchr(argv[0], '='))) {
79072805 3366 *s++ = '\0';
85e6fe83 3367 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3368 }
3369 else
85e6fe83 3370 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3371 }
79072805 3372 }
3280af22
NIS
3373 PL_toptarget = NEWSV(0,0);
3374 sv_upgrade(PL_toptarget, SVt_PVFM);
3375 sv_setpvn(PL_toptarget, "", 0);
3376 PL_bodytarget = NEWSV(0,0);
3377 sv_upgrade(PL_bodytarget, SVt_PVFM);
3378 sv_setpvn(PL_bodytarget, "", 0);
3379 PL_formtarget = PL_bodytarget;
79072805 3380
bbce6d69 3381 TAINT;
155aba94 3382 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3383#ifdef MACOS_TRADITIONAL
3384 /* $0 is not majick on a Mac */
3385 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3386#else
3280af22 3387 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3388 magicname("0", "0", 1);
bf4acbe4 3389#endif
79072805 3390 }
155aba94 3391 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3392#ifdef OS2
23da6c43 3393 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3394#else
3280af22 3395 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3396#endif
155aba94 3397 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3398 GvMULTI_on(PL_argvgv);
3399 (void)gv_AVadd(PL_argvgv);
3400 av_clear(GvAVn(PL_argvgv));
79072805 3401 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3402 SV *sv = newSVpv(argv[0],0);
3403 av_push(GvAVn(PL_argvgv),sv);
3404 if (PL_widesyscalls)
e84ff256 3405 (void)sv_utf8_decode(sv);
79072805
LW
3406 }
3407 }
155aba94 3408 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3409 HV *hv;
3280af22
NIS
3410 GvMULTI_on(PL_envgv);
3411 hv = GvHVn(PL_envgv);
14befaf4 3412 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3413#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW
3414 /* Note that if the supplied env parameter is actually a copy
3415 of the global environ then it may now point to free'd memory
3416 if the environment has been modified since. To avoid this
3417 problem we treat env==NULL as meaning 'use the default'
3418 */
3419 if (!env)
3420 env = environ;
5aabfad6 3421 if (env != environ)
79072805 3422 environ[0] = Nullch;
103a7189
JH
3423#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3424 {
3425 char **env_base;
9041c2e3 3426 for (env_base = env; *env; env++)
103a7189
JH
3427 dup_env_count++;
3428 if ((dup_env_base = (char **)
480bfd1e 3429 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH
3430 char **dup_env;
3431 for (env = env_base, dup_env = dup_env_base;
3432 *env;
480bfd1e
JH
3433 env++, dup_env++) {
3434 /* With environ one needs to use safesysmalloc(). */
3435 *dup_env = safesysmalloc(strlen(*env) + 1);
3436 (void)strcpy(*dup_env, *env);
3437 }
103a7189
JH
3438 *dup_env = Nullch;
3439 env = dup_env_base;
3440 } /* else what? */
3441 }
3442#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ
3443 if (env)
3444 for (; *env; env++) {
93a17b20 3445 if (!(s = strchr(*env,'=')))
79072805
LW
3446 continue;
3447 *s++ = '\0';
60ce6247 3448#if defined(MSDOS)
137443ea
PP
3449 (void)strupr(*env);
3450#endif
79072805
LW
3451 sv = newSVpv(s--,0);
3452 (void)hv_store(hv, *env, s - *env, sv, 0);
3453 *s = '=';
764df951 3454 }
480bfd1e 3455#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH
3456 if (dup_env_base) {
3457 char **dup_env;
3458 for (dup_env = dup_env_base; *dup_env; dup_env++)