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[patch] plug PL_origargv leak
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
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
GS		 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
MB		 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 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 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 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 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 469 /* loosen bonds of global variables */
470
3280af22
NIS		 471 if(PL_rsfp) {
472 (void)PerlIO_close(PL_rsfp);
473 PL_rsfp = Nullfp;
8ebc5c01 474 }
475
476 /* Filters for program text */
3280af22
NIS		 477 SvREFCNT_dec(PL_rsfp_filters);
478 PL_rsfp_filters = Nullav;
8ebc5c01 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 500 }
501
bc0a45ed
DM		 502 while (--PL_origargc >= 0) {
503 Safefree(PL_origargv[PL_origargc]);
504 }
505 Safefree(PL_origargv);
506
8ebc5c01 507 /* magical thingies */
508
7889fe52
NIS		 509 SvREFCNT_dec(PL_ofs_sv); /* $, */
510 PL_ofs_sv = Nullsv;
5f05dabc 511
7889fe52
NIS		 512 SvREFCNT_dec(PL_ors_sv); /* $\ */
513 PL_ors_sv = Nullsv;
8ebc5c01 514
3280af22
NIS		 515 SvREFCNT_dec(PL_rs); /* $/ */
516 PL_rs = Nullsv;
dc92893f 517
3280af22
NIS		 518 SvREFCNT_dec(PL_nrs); /* $/ helper */
519 PL_nrs = Nullsv;
5f05dabc 520
d33b2eba
GS		 521 PL_multiline = 0; /* $* */
522 Safefree(PL_osname); /* $^O */
523 PL_osname = Nullch;
5f05dabc 524
3280af22
NIS		 525 SvREFCNT_dec(PL_statname);
526 PL_statname = Nullsv;
527 PL_statgv = Nullgv;
5f05dabc 528
8ebc5c01 529 /* defgv, aka *_ should be taken care of elsewhere */
530
8ebc5c01 531 /* clean up after study() */
3280af22
NIS		 532 SvREFCNT_dec(PL_lastscream);
533 PL_lastscream = Nullsv;
534 Safefree(PL_screamfirst);
535 PL_screamfirst = 0;
536 Safefree(PL_screamnext);
537 PL_screamnext = 0;
8ebc5c01 538
7d5ea4e7
GS		 539 /* float buffer */
540 Safefree(PL_efloatbuf);
541 PL_efloatbuf = Nullch;
542 PL_efloatsize = 0;
543
8ebc5c01 544 /* startup and shutdown function lists */
3280af22
NIS		 545 SvREFCNT_dec(PL_beginav);
546 SvREFCNT_dec(PL_endav);
7d30b5c4 547 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 548 SvREFCNT_dec(PL_initav);
549 PL_beginav = Nullav;
550 PL_endav = Nullav;
7d30b5c4 551 PL_checkav = Nullav;
3280af22 552 PL_initav = Nullav;
5618dfe8 553
8ebc5c01 554 /* shortcuts just get cleared */
3280af22 555 PL_envgv = Nullgv;
3280af22
NIS		 556 PL_incgv = Nullgv;
557 PL_hintgv = Nullgv;
558 PL_errgv = Nullgv;
559 PL_argvgv = Nullgv;
560 PL_argvoutgv = Nullgv;
561 PL_stdingv = Nullgv;
bf49b057 562 PL_stderrgv = Nullgv;
3280af22
NIS		 563 PL_last_in_gv = Nullgv;
564 PL_replgv = Nullgv;
5c831c24 565 PL_debstash = Nullhv;
8ebc5c01 566
567 /* reset so print() ends up where we expect */
568 setdefout(Nullgv);
5c831c24 569
7a1c5554
GS		 570 SvREFCNT_dec(PL_argvout_stack);
571 PL_argvout_stack = Nullav;
8ebc5c01 572
5c831c24
GS		 573 SvREFCNT_dec(PL_modglobal);
574 PL_modglobal = Nullhv;
575 SvREFCNT_dec(PL_preambleav);
576 PL_preambleav = Nullav;
577 SvREFCNT_dec(PL_subname);
578 PL_subname = Nullsv;
579 SvREFCNT_dec(PL_linestr);
580 PL_linestr = Nullsv;
581 SvREFCNT_dec(PL_pidstatus);
582 PL_pidstatus = Nullhv;
583 SvREFCNT_dec(PL_toptarget);
584 PL_toptarget = Nullsv;
585 SvREFCNT_dec(PL_bodytarget);
586 PL_bodytarget = Nullsv;
587 PL_formtarget = Nullsv;
588
d33b2eba 589 /* free locale stuff */
b9582b6a 590#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 591 Safefree(PL_collation_name);
592 PL_collation_name = Nullch;
b9582b6a 593#endif
d33b2eba 594
b9582b6a 595#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 596 Safefree(PL_numeric_name);
597 PL_numeric_name = Nullch;
a453c169 598 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 599#endif
d33b2eba 600
5c831c24
GS		 601 /* clear utf8 character classes */
602 SvREFCNT_dec(PL_utf8_alnum);
603 SvREFCNT_dec(PL_utf8_alnumc);
604 SvREFCNT_dec(PL_utf8_ascii);
605 SvREFCNT_dec(PL_utf8_alpha);
606 SvREFCNT_dec(PL_utf8_space);
607 SvREFCNT_dec(PL_utf8_cntrl);
608 SvREFCNT_dec(PL_utf8_graph);
609 SvREFCNT_dec(PL_utf8_digit);
610 SvREFCNT_dec(PL_utf8_upper);
611 SvREFCNT_dec(PL_utf8_lower);
612 SvREFCNT_dec(PL_utf8_print);
613 SvREFCNT_dec(PL_utf8_punct);
614 SvREFCNT_dec(PL_utf8_xdigit);
615 SvREFCNT_dec(PL_utf8_mark);
616 SvREFCNT_dec(PL_utf8_toupper);
617 SvREFCNT_dec(PL_utf8_tolower);
618 PL_utf8_alnum = Nullsv;
619 PL_utf8_alnumc = Nullsv;
620 PL_utf8_ascii = Nullsv;
621 PL_utf8_alpha = Nullsv;
622 PL_utf8_space = Nullsv;
623 PL_utf8_cntrl = Nullsv;
624 PL_utf8_graph = Nullsv;
625 PL_utf8_digit = Nullsv;
626 PL_utf8_upper = Nullsv;
627 PL_utf8_lower = Nullsv;
628 PL_utf8_print = Nullsv;
629 PL_utf8_punct = Nullsv;
630 PL_utf8_xdigit = Nullsv;
631 PL_utf8_mark = Nullsv;
632 PL_utf8_toupper = Nullsv;
633 PL_utf8_totitle = Nullsv;
634 PL_utf8_tolower = Nullsv;
635
971a9dd3
GS		 636 if (!specialWARN(PL_compiling.cop_warnings))
637 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 638 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 639 if (!specialCopIO(PL_compiling.cop_io))
640 SvREFCNT_dec(PL_compiling.cop_io);
641 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 642#ifdef USE_ITHREADS
643 Safefree(CopFILE(&PL_compiling));
644 CopFILE(&PL_compiling) = Nullch;
645 Safefree(CopSTASHPV(&PL_compiling));
646#else
01724ea0 647 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 648 CopFILEGV(&PL_compiling) = Nullgv;
649 /* cop_stash is not refcounted */
01724ea0 650#endif
5c831c24 651
a0d0e21e 652 /* Prepare to destruct main symbol table. */
5f05dabc 653
3280af22
NIS		 654 hv = PL_defstash;
655 PL_defstash = 0;
a0d0e21e 656 SvREFCNT_dec(hv);
5c831c24
GS		 657 SvREFCNT_dec(PL_curstname);
658 PL_curstname = Nullsv;
a0d0e21e 659
5a844595
GS		 660 /* clear queued errors */
661 SvREFCNT_dec(PL_errors);
662 PL_errors = Nullsv;
663
a0d0e21e 664 FREETMPS;
0453d815 665 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 666 if (PL_scopestack_ix != 0)
0453d815
PM		 667 Perl_warner(aTHX_ WARN_INTERNAL,
668 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 669 (long)PL_scopestack_ix);
670 if (PL_savestack_ix != 0)
0453d815
PM		 671 Perl_warner(aTHX_ WARN_INTERNAL,
672 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 673 (long)PL_savestack_ix);
674 if (PL_tmps_floor != -1)
0453d815 675 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 676 (long)PL_tmps_floor + 1);
a0d0e21e 677 if (cxstack_ix != -1)
0453d815 678 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 679 (long)cxstack_ix + 1);
a0d0e21e 680 }
8990e307
LW		 681
682 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 683 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 684 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 685
686 /* the 2 is for PL_fdpid and PL_strtab */
687 while (PL_sv_count > 2 && sv_clean_all())
688 ;
689
d33b2eba
GS		 690 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
691 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 692 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
693 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 694
d4777f27
GS		 695 AvREAL_off(PL_fdpid); /* no surviving entries */
696 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 697 PL_fdpid = Nullav;
698
6c644e78
GS		 699#ifdef HAVE_INTERP_INTERN
700 sys_intern_clear();
701#endif
702
6e72f9df 703 /* Destruct the global string table. */
704 {
705 /* Yell and reset the HeVAL() slots that are still holding refcounts,
706 * so that sv_free() won't fail on them.
707 */
708 I32 riter;
709 I32 max;
710 HE *hent;
711 HE **array;
712
713 riter = 0;
3280af22
NIS		 714 max = HvMAX(PL_strtab);
715 array = HvARRAY(PL_strtab);
6e72f9df 716 hent = array[0];
717 for (;;) {
0453d815
PM		 718 if (hent && ckWARN_d(WARN_INTERNAL)) {
719 Perl_warner(aTHX_ WARN_INTERNAL,
720 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 721 HeVAL(hent) - Nullsv, HeKEY(hent));
722 HeVAL(hent) = Nullsv;
723 hent = HeNEXT(hent);
724 }
725 if (!hent) {
726 if (++riter > max)
727 break;
728 hent = array[riter];
729 }
730 }
731 }
3280af22 732 SvREFCNT_dec(PL_strtab);
6e72f9df 733
e652bb2f 734#ifdef USE_ITHREADS
a0739874
DM		 735 /* free the pointer table used for cloning */
736 ptr_table_free(PL_ptr_table);
53186e96 737#endif
a0739874 738
d33b2eba
GS		 739 /* free special SVs */
740
741 SvREFCNT(&PL_sv_yes) = 0;
742 sv_clear(&PL_sv_yes);
743 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 744 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 745
746 SvREFCNT(&PL_sv_no) = 0;
747 sv_clear(&PL_sv_no);
748 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 749 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 750
751 SvREFCNT(&PL_sv_undef) = 0;
752 SvREADONLY_off(&PL_sv_undef);
d33b2eba 753
0453d815
PM		 754 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
755 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 756
3280af22 757 Safefree(PL_origfilename);
3280af22 758 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 759 if (PL_reg_curpm)
760 Safefree(PL_reg_curpm);
82ba1be6 761 Safefree(PL_reg_poscache);
3280af22
NIS		 762 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
763 Safefree(PL_op_mask);
cf36064f
GS		 764 Safefree(PL_psig_ptr);
765 Safefree(PL_psig_name);
2c2666fc 766 Safefree(PL_bitcount);
ce08f86c 767 Safefree(PL_psig_pend);
6e72f9df 768 nuke_stacks();
3280af22 769 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 770
a0d0e21e 771 DEBUG_P(debprofdump());
11343788 772#ifdef USE_THREADS
5f08fbcd 773 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 774 MUTEX_DESTROY(&PL_sv_mutex);
775 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 776 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 777 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 778 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 779#ifdef EMULATE_ATOMIC_REFCOUNTS
780 MUTEX_DESTROY(&PL_svref_mutex);
781#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 782
8023c3ce 783 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 784 Safefree(SvPVX(PL_thrsv));
785 Safefree(SvANY(PL_thrsv));
786 Safefree(PL_thrsv);
787 PL_thrsv = Nullsv;
8023c3ce 788#endif /* USE_THREADS */
d33b2eba 789
e5dd39fc
AB		 790#ifdef USE_REENTRANT_API
791 Safefree(PL_reentrant_buffer->tmbuff);
792 Safefree(PL_reentrant_buffer);
793#endif
794
612f20c3
GS		 795 sv_free_arenas();
796
fc36a67e 797 /* As the absolutely last thing, free the non-arena SV for mess() */
798
3280af22 799 if (PL_mess_sv) {
9c63abab
GS		 800 /* it could have accumulated taint magic */
801 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
802 MAGIC* mg;
803 MAGIC* moremagic;
804 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
805 moremagic = mg->mg_moremagic;
14befaf4
DM		 806 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
807 && mg->mg_len >= 0)
9c63abab
GS		 808 Safefree(mg->mg_ptr);
809 Safefree(mg);
810 }
811 }
fc36a67e 812 /* we know that type >= SVt_PV */
155aba94 813 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 814 Safefree(SvPVX(PL_mess_sv));
815 Safefree(SvANY(PL_mess_sv));
816 Safefree(PL_mess_sv);
817 PL_mess_sv = Nullsv;
fc36a67e 818 }
79072805
LW		 819}
820
954c1994
GS		 821/*
822=for apidoc perl_free
823
824Releases a Perl interpreter. See L<perlembed>.
825
826=cut
827*/
828
79072805 829void
0cb96387 830perl_free(pTHXx)
79072805 831{
c5be433b 832#if defined(PERL_OBJECT)
7f0d82f7 833 PerlMem_free(this);
76e3520e 834#else
2986a63f 835# if defined(WIN32) || defined(NETWARE)
ce3e5b80 836# if defined(PERL_IMPLICIT_SYS)
2986a63f
JH		 837 #ifdef NETWARE
838 void *host = nw_internal_host;
839 #else
840 void *host = w32_internal_host;
841 #endif
842 #ifndef NETWARE
843 if (PerlProc_lasthost()) {
ce08f86c 844 PerlIO_cleanup();
2986a63f
JH		 845 }
846 #endif
7f0d82f7 847 PerlMem_free(aTHXx);
2986a63f
JH		 848 #ifdef NETWARE
849 nw5_delete_internal_host(host);
850 #else
851 win32_delete_internal_host(host);
852 #endif
ce3e5b80 853#else
ce08f86c 854 PerlIO_cleanup();
ce3e5b80
NIS		 855 PerlMem_free(aTHXx);
856#endif
1c0ca838
GS		 857# else
858 PerlMem_free(aTHXx);
859# endif
76e3520e 860#endif
79072805
LW		 861}
862
4b556e6c 863void
864dbfa3 864Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 865{
3280af22
NIS		 866 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
867 PL_exitlist[PL_exitlistlen].fn = fn;
868 PL_exitlist[PL_exitlistlen].ptr = ptr;
869 ++PL_exitlistlen;
4b556e6c
JD		 870}
871
954c1994
GS		 872/*
873=for apidoc perl_parse
874
875Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
876
877=cut
878*/
879
79072805 880int
0cb96387 881perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 882{
6224f72b 883 I32 oldscope;
6224f72b 884 int ret;
db36c5a1 885 dJMPENV;
cea2e8a9
GS		 886#ifdef USE_THREADS
887 dTHX;
888#endif
8d063cd8 889
a687059c
LW		 890#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
891#ifdef IAMSUID
892#undef IAMSUID
cea2e8a9 893 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 894setuid perl scripts securely.\n");
895#endif
896#endif
897
8f1f23e8 898#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 899 _dyld_lookup_and_bind
900 ("__environ", (unsigned long *) &environ_pointer, NULL);
901#endif /* environ */
902
3280af22 903 PL_origargc = argc;
bc0a45ed
DM		 904 {
905 /* we copy rather than point to argv
906 * since perl_clone will copy and perl_destruct
907 * has no way of knowing if we've made a copy or
908 * just point to argv
909 */
910 int i = PL_origargc;
911 New(0, PL_origargv, i+1, char*);
912 PL_origargv[i] = '\0';
913 while (i-- > 0) {
914 PL_origargv[i] = savepv(argv[i]);
915 }
916 }
917
fa6a1c44 918#ifdef USE_ENVIRON_ARRAY
3280af22 919 PL_origenviron = environ;
a0d0e21e
LW		 920#endif
921
3280af22 922 if (PL_do_undump) {
a0d0e21e
LW		 923
924 /* Come here if running an undumped a.out. */
925
3280af22
NIS		 926 PL_origfilename = savepv(argv[0]);
927 PL_do_undump = FALSE;
a0d0e21e 928 cxstack_ix = -1; /* start label stack again */
748a9306 929 init_ids();
a0d0e21e
LW		 930 init_postdump_symbols(argc,argv,env);
931 return 0;
932 }
933
3280af22
NIS		 934 if (PL_main_root) {
935 PL_curpad = AvARRAY(PL_comppad);
936 op_free(PL_main_root);
937 PL_main_root = Nullop;
ff0cee69 938 }
3280af22
NIS		 939 PL_main_start = Nullop;
940 SvREFCNT_dec(PL_main_cv);
941 PL_main_cv = Nullcv;
79072805 942
3280af22
NIS		 943 time(&PL_basetime);
944 oldscope = PL_scopestack_ix;
599cee73 945 PL_dowarn = G_WARN_OFF;
f86702cc 946
14dd3ad8
GS		 947#ifdef PERL_FLEXIBLE_EXCEPTIONS
948 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
949#else
950 JMPENV_PUSH(ret);
951#endif
6224f72b 952 switch (ret) {
312caa8e 953 case 0:
14dd3ad8
GS		 954#ifndef PERL_FLEXIBLE_EXCEPTIONS
955 parse_body(env,xsinit);
956#endif
7d30b5c4
GS		 957 if (PL_checkav)
958 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 959 ret = 0;
960 break;
6224f72b
GS		 961 case 1:
962 STATUS_ALL_FAILURE;
963 /* FALL THROUGH */
964 case 2:
965 /* my_exit() was called */
3280af22 966 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 967 LEAVE;
968 FREETMPS;
3280af22 969 PL_curstash = PL_defstash;
7d30b5c4
GS		 970 if (PL_checkav)
971 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 972 ret = STATUS_NATIVE_EXPORT;
973 break;
6224f72b 974 case 3:
bf49b057 975 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 976 ret = 1;
977 break;
6224f72b 978 }
14dd3ad8
GS		 979 JMPENV_POP;
980 return ret;
981}
982
983#ifdef PERL_FLEXIBLE_EXCEPTIONS
984STATIC void *
985S_vparse_body(pTHX_ va_list args)
986{
987 char **env = va_arg(args, char**);
988 XSINIT_t xsinit = va_arg(args, XSINIT_t);
989
990 return parse_body(env, xsinit);
312caa8e 991}
14dd3ad8 992#endif
312caa8e
CS		 993
994STATIC void *
14dd3ad8 995S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 996{
312caa8e
CS		 997 int argc = PL_origargc;
998 char **argv = PL_origargv;
312caa8e
CS		 999 char *scriptname = NULL;
1000 int fdscript = -1;
1001 VOL bool dosearch = FALSE;
1002 char *validarg = "";
1003 AV* comppadlist;
1004 register SV *sv;
1005 register char *s;
659ca9ea 1006 char *popts, *cddir = Nullch;
312caa8e 1007
3280af22 1008 sv_setpvn(PL_linestr,"",0);
79cb57f6 1009 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1010 SAVEFREESV(sv);
1011 init_main_stash();
54310121 1012
6224f72b
GS		 1013 for (argc--,argv++; argc > 0; argc--,argv++) {
1014 if (argv[0][0] != '-' || !argv[0][1])
1015 break;
1016#ifdef DOSUID
1017 if (*validarg)
1018 validarg = " PHOOEY ";
1019 else
1020 validarg = argv[0];
13281fa4 1021#endif
6224f72b
GS		 1022 s = argv[0]+1;
1023 reswitch:
1024 switch (*s) {
729a02f2
GS		 1025 case 'C':
1026#ifdef WIN32
c0932edc 1027 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1028 /* FALL THROUGH */
1029#endif
1d5472a9
GS		 1030#ifndef PERL_STRICT_CR
1031 case '\r':
1032#endif
6224f72b
GS		 1033 case ' ':
1034 case '0':
1035 case 'F':
1036 case 'a':
1037 case 'c':
1038 case 'd':
1039 case 'D':
1040 case 'h':
1041 case 'i':
1042 case 'l':
1043 case 'M':
1044 case 'm':
1045 case 'n':
1046 case 'p':
1047 case 's':
1048 case 'u':
1049 case 'U':
1050 case 'v':
599cee73
PM		 1051 case 'W':
1052 case 'X':
6224f72b 1053 case 'w':
155aba94 1054 if ((s = moreswitches(s)))
6224f72b
GS		 1055 goto reswitch;
1056 break;
33b78306 1057
6224f72b 1058 case 'T':
3280af22 1059 PL_tainting = TRUE;
6224f72b
GS		 1060 s++;
1061 goto reswitch;
f86702cc 1062
6224f72b 1063 case 'e':
bf4acbe4
GS		 1064#ifdef MACOS_TRADITIONAL
1065 /* ignore -e for Dev:Pseudo argument */
1066 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1067 break;
bf4acbe4 1068#endif
3280af22 1069 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1070 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1071 if (!PL_e_script) {
79cb57f6 1072 PL_e_script = newSVpvn("",0);
0cb96387 1073 filter_add(read_e_script, NULL);
6224f72b
GS		 1074 }
1075 if (*++s)
3280af22 1076 sv_catpv(PL_e_script, s);
6224f72b 1077 else if (argv[1]) {
3280af22 1078 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1079 argc--,argv++;
1080 }
1081 else
cea2e8a9 1082 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1083 sv_catpv(PL_e_script, "\n");
6224f72b 1084 break;
afe37c7d 1085
6224f72b
GS		 1086 case 'I': /* -I handled both here and in moreswitches() */
1087 forbid_setid("-I");
1088 if (!*++s && (s=argv[1]) != Nullch) {
1089 argc--,argv++;
1090 }
6224f72b 1091 if (s && *s) {
0df16ed7
GS		 1092 char *p;
1093 STRLEN len = strlen(s);
1094 p = savepvn(s, len);
9c8a64f0 1095 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1096 sv_catpvn(sv, "-I", 2);
1097 sv_catpvn(sv, p, len);
1098 sv_catpvn(sv, " ", 1);
6224f72b 1099 Safefree(p);
0df16ed7
GS		 1100 }
1101 else
a67e862a 1102 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1103 break;
1104 case 'P':
1105 forbid_setid("-P");
3280af22 1106 PL_preprocess = TRUE;
6224f72b
GS		 1107 s++;
1108 goto reswitch;
1109 case 'S':
1110 forbid_setid("-S");
1111 dosearch = TRUE;
1112 s++;
1113 goto reswitch;
1114 case 'V':
3280af22
NIS		 1115 if (!PL_preambleav)
1116 PL_preambleav = newAV();
1117 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1118 if (*++s != ':') {
3280af22 1119 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1120#ifdef VMS
6b88bc9c 1121 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1122#else
3280af22 1123 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1124#endif
3280af22 1125 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1126# ifdef DEBUGGING
3280af22 1127 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1128# endif
6224f72b 1129# ifdef MULTIPLICITY
8f872242 1130 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1131# endif
b363f7ed
GS		 1132# ifdef USE_THREADS
1133 sv_catpv(PL_Sv," USE_THREADS");
1134# endif
ac5e8965
JH		 1135# ifdef USE_ITHREADS
1136 sv_catpv(PL_Sv," USE_ITHREADS");
1137# endif
10cc9d2a
JH		 1138# ifdef USE_64_BIT_INT
1139 sv_catpv(PL_Sv," USE_64_BIT_INT");
1140# endif
1141# ifdef USE_64_BIT_ALL
1142 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1143# endif
1144# ifdef USE_LONG_DOUBLE
1145 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1146# endif
53430762
JH		 1147# ifdef USE_LARGE_FILES
1148 sv_catpv(PL_Sv," USE_LARGE_FILES");
1149# endif
ac5e8965
JH		 1150# ifdef USE_SOCKS
1151 sv_catpv(PL_Sv," USE_SOCKS");
1152# endif
b363f7ed
GS		 1153# ifdef PERL_OBJECT
1154 sv_catpv(PL_Sv," PERL_OBJECT");
1155# endif
1156# ifdef PERL_IMPLICIT_CONTEXT
1157 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1158# endif
1159# ifdef PERL_IMPLICIT_SYS
1160 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1161# endif
3280af22 1162 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1163
6224f72b
GS		 1164#if defined(LOCAL_PATCH_COUNT)
1165 if (LOCAL_PATCH_COUNT > 0) {
1166 int i;
3280af22 1167 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1168 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1169 if (PL_localpatches[i])
cea2e8a9 1170 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1171 }
1172 }
1173#endif
cea2e8a9 1174 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1175#ifdef __DATE__
1176# ifdef __TIME__
cea2e8a9 1177 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1178# else
cea2e8a9 1179 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1180# endif
1181#endif
3280af22 1182 sv_catpv(PL_Sv, "; \
6224f72b 1183$\"=\"\\n \"; \
69fcd688
JH		 1184@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1185#ifdef __CYGWIN__
1186 sv_catpv(PL_Sv,"\
1187push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1188#endif
1189 sv_catpv(PL_Sv, "\
6224f72b
GS		 1190print \" \\%ENV:\\n @env\\n\" if @env; \
1191print \" \\@INC:\\n @INC\\n\";");
1192 }
1193 else {
3280af22
NIS		 1194 PL_Sv = newSVpv("config_vars(qw(",0);
1195 sv_catpv(PL_Sv, ++s);
1196 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1197 s += strlen(s);
1198 }
3280af22 1199 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1200 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1201 goto reswitch;
1202 case 'x':
3280af22 1203 PL_doextract = TRUE;
6224f72b
GS		 1204 s++;
1205 if (*s)
f4c556ac 1206 cddir = s;
6224f72b
GS		 1207 break;
1208 case 0:
1209 break;
1210 case '-':
1211 if (!*++s || isSPACE(*s)) {
1212 argc--,argv++;
1213 goto switch_end;
1214 }
1215 /* catch use of gnu style long options */
1216 if (strEQ(s, "version")) {
1217 s = "v";
1218 goto reswitch;
1219 }
1220 if (strEQ(s, "help")) {
1221 s = "h";
1222 goto reswitch;
1223 }
1224 s--;
1225 /* FALL THROUGH */
1226 default:
cea2e8a9 1227 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1228 }
1229 }
6224f72b 1230 switch_end:
54310121 1231
f675dbe5
CB		 1232 if (
1233#ifndef SECURE_INTERNAL_GETENV
1234 !PL_tainting &&
1235#endif
659ca9ea 1236 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1237 {
659ca9ea 1238 s = savepv(popts);
74288ac8
GS		 1239 while (isSPACE(*s))
1240 s++;
1241 if (*s == '-' && *(s+1) == 'T')
1242 PL_tainting = TRUE;
1243 else {
1244 while (s && *s) {
4ea8f8fb 1245 char *d;
74288ac8
GS		 1246 while (isSPACE(*s))
1247 s++;
1248 if (*s == '-') {
1249 s++;
1250 if (isSPACE(*s))
1251 continue;
1252 }
4ea8f8fb 1253 d = s;
74288ac8
GS		 1254 if (!*s)
1255 break;
1256 if (!strchr("DIMUdmw", *s))
cea2e8a9 1257 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1258 while (++s && *s) {
1259 if (isSPACE(*s)) {
1260 *s++ = '\0';
1261 break;
1262 }
1263 }
1264 moreswitches(d);
6224f72b 1265 }
6224f72b
GS		 1266 }
1267 }
a0d0e21e 1268
6224f72b
GS		 1269 if (!scriptname)
1270 scriptname = argv[0];
3280af22 1271 if (PL_e_script) {
6224f72b
GS		 1272 argc++,argv--;
1273 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1274 }
1275 else if (scriptname == Nullch) {
1276#ifdef MSDOS
1277 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1278 moreswitches("h");
1279#endif
1280 scriptname = "-";
1281 }
1282
1283 init_perllib();
1284
1285 open_script(scriptname,dosearch,sv,&fdscript);
1286
1287 validate_suid(validarg, scriptname,fdscript);
1288
64ca3a65 1289#ifndef PERL_MICRO
0b5b802d
GS		 1290#if defined(SIGCHLD) || defined(SIGCLD)
1291 {
1292#ifndef SIGCHLD
1293# define SIGCHLD SIGCLD
1294#endif
1295 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1296 if (sigstate == SIG_IGN) {
1297 if (ckWARN(WARN_SIGNAL))
1298 Perl_warner(aTHX_ WARN_SIGNAL,
1299 "Can't ignore signal CHLD, forcing to default");
1300 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1301 }
1302 }
1303#endif
64ca3a65 1304#endif
0b5b802d 1305
bf4acbe4
GS		 1306#ifdef MACOS_TRADITIONAL
1307 if (PL_doextract || gMacPerl_AlwaysExtract) {
1308#else
f4c556ac 1309 if (PL_doextract) {
bf4acbe4 1310#endif
6224f72b 1311 find_beginning();
f4c556ac
GS		 1312 if (cddir && PerlDir_chdir(cddir) < 0)
1313 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1314
1315 }
6224f72b 1316
3280af22
NIS		 1317 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1318 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1319 CvUNIQUE_on(PL_compcv);
1320
1321 PL_comppad = newAV();
1322 av_push(PL_comppad, Nullsv);
1323 PL_curpad = AvARRAY(PL_comppad);
1324 PL_comppad_name = newAV();
1325 PL_comppad_name_fill = 0;
1326 PL_min_intro_pending = 0;
1327 PL_padix = 0;
6224f72b 1328#ifdef USE_THREADS
79cb57f6 1329 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1330 PL_curpad[0] = (SV*)newAV();
1331 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1332 CvOWNER(PL_compcv) = 0;
1333 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1334 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1335#endif /* USE_THREADS */
1336
1337 comppadlist = newAV();
1338 AvREAL_off(comppadlist);
3280af22
NIS		 1339 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1340 av_store(comppadlist, 1, (SV*)PL_comppad);
1341 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1342
0c4f7ff0 1343 boot_core_PerlIO();
6224f72b 1344 boot_core_UNIVERSAL();
9a34ef1d 1345#ifndef PERL_MICRO
09bef843 1346 boot_core_xsutils();
9a34ef1d 1347#endif
6224f72b
GS		 1348
1349 if (xsinit)
0cb96387 1350 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1351#ifndef PERL_MICRO
ed79a026 1352#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1353 init_os_extras();
6224f72b 1354#endif
64ca3a65 1355#endif
6224f72b 1356
29209bc5 1357#ifdef USE_SOCKS
1b9c9cf5
DH		 1358# ifdef HAS_SOCKS5_INIT
1359 socks5_init(argv[0]);
1360# else
29209bc5 1361 SOCKSinit(argv[0]);
1b9c9cf5 1362# endif
ac27b0f5 1363#endif
29209bc5 1364
6224f72b
GS		 1365 init_predump_symbols();
1366 /* init_postdump_symbols not currently designed to be called */
1367 /* more than once (ENV isn't cleared first, for example) */
1368 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1369 if (!PL_do_undump)
6224f72b
GS		 1370 init_postdump_symbols(argc,argv,env);
1371
1372 init_lexer();
1373
1374 /* now parse the script */
1375
1376 SETERRNO(0,SS$_NORMAL);
3280af22 1377 PL_error_count = 0;
bf4acbe4
GS		 1378#ifdef MACOS_TRADITIONAL
1379 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1380 if (PL_minus_c)
1381 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1382 else {
1383 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1384 MacPerl_MPWFileName(PL_origfilename));
1385 }
1386 }
1387#else
3280af22
NIS		 1388 if (yyparse() || PL_error_count) {
1389 if (PL_minus_c)
cea2e8a9 1390 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1391 else {
cea2e8a9 1392 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1393 PL_origfilename);
6224f72b
GS		 1394 }
1395 }
bf4acbe4 1396#endif
57843af0 1397 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1398 PL_curstash = PL_defstash;
1399 PL_preprocess = FALSE;
1400 if (PL_e_script) {
1401 SvREFCNT_dec(PL_e_script);
1402 PL_e_script = Nullsv;
6224f72b
GS		 1403 }
1404
1405 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1406 SvREFCNT_dec(PL_rs);
1407 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1408 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1409 if (PL_do_undump)
6224f72b
GS		 1410 my_unexec();
1411
57843af0
GS		 1412 if (isWARN_ONCE) {
1413 SAVECOPFILE(PL_curcop);
1414 SAVECOPLINE(PL_curcop);
3280af22 1415 gv_check(PL_defstash);
57843af0 1416 }
6224f72b
GS		 1417
1418 LEAVE;
1419 FREETMPS;
1420
1421#ifdef MYMALLOC
1422 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1423 dump_mstats("after compilation:");
1424#endif
1425
1426 ENTER;
3280af22 1427 PL_restartop = 0;
312caa8e 1428 return NULL;
6224f72b
GS		 1429}
1430
954c1994
GS		 1431/*
1432=for apidoc perl_run
1433
1434Tells a Perl interpreter to run. See L<perlembed>.
1435
1436=cut
1437*/
1438
6224f72b 1439int
0cb96387 1440perl_run(pTHXx)
6224f72b 1441{
6224f72b 1442 I32 oldscope;
14dd3ad8 1443 int ret = 0;
db36c5a1 1444 dJMPENV;
cea2e8a9
GS		 1445#ifdef USE_THREADS
1446 dTHX;
1447#endif
6224f72b 1448
3280af22 1449 oldscope = PL_scopestack_ix;
6224f72b 1450
14dd3ad8 1451#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1452 redo_body:
14dd3ad8
GS		 1453 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1454#else
1455 JMPENV_PUSH(ret);
1456#endif
6224f72b
GS		 1457 switch (ret) {
1458 case 1:
1459 cxstack_ix = -1; /* start context stack again */
312caa8e 1460 goto redo_body;
14dd3ad8
GS		 1461 case 0: /* normal completion */
1462#ifndef PERL_FLEXIBLE_EXCEPTIONS
1463 redo_body:
1464 run_body(oldscope);
1465#endif
1466 /* FALL THROUGH */
1467 case 2: /* my_exit() */
3280af22 1468 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1469 LEAVE;
1470 FREETMPS;
3280af22 1471 PL_curstash = PL_defstash;
865be832 1472 if (PL_endav && !PL_minus_c)
3280af22 1473 call_list(oldscope, PL_endav);
6224f72b
GS		 1474#ifdef MYMALLOC
1475 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1476 dump_mstats("after execution: ");
1477#endif
14dd3ad8
GS		 1478 ret = STATUS_NATIVE_EXPORT;
1479 break;
6224f72b 1480 case 3:
312caa8e
CS		 1481 if (PL_restartop) {
1482 POPSTACK_TO(PL_mainstack);
1483 goto redo_body;
6224f72b 1484 }
bf49b057 1485 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1486 FREETMPS;
14dd3ad8
GS		 1487 ret = 1;
1488 break;
6224f72b
GS		 1489 }
1490
14dd3ad8
GS		 1491 JMPENV_POP;
1492 return ret;
312caa8e
CS		 1493}
1494
14dd3ad8 1495#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1496STATIC void *
14dd3ad8 1497S_vrun_body(pTHX_ va_list args)
312caa8e 1498{
312caa8e
CS		 1499 I32 oldscope = va_arg(args, I32);
1500
14dd3ad8
GS		 1501 return run_body(oldscope);
1502}
1503#endif
1504
1505
1506STATIC void *
1507S_run_body(pTHX_ I32 oldscope)
1508{
6224f72b 1509 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1510 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1511
3280af22 1512 if (!PL_restartop) {
6224f72b
GS		 1513 DEBUG_x(dump_all());
1514 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1515 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1516 PTR2UV(thr)));
6224f72b 1517
3280af22 1518 if (PL_minus_c) {
bf4acbe4
GS		 1519#ifdef MACOS_TRADITIONAL
1520 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1521#else
bf49b057 1522 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1523#endif
6224f72b
GS		 1524 my_exit(0);
1525 }
3280af22 1526 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1527 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1528 if (PL_initav)
1529 call_list(oldscope, PL_initav);
6224f72b
GS		 1530 }
1531
1532 /* do it */
1533
3280af22 1534 if (PL_restartop) {
533c011a 1535 PL_op = PL_restartop;
3280af22 1536 PL_restartop = 0;
cea2e8a9 1537 CALLRUNOPS(aTHX);
6224f72b 1538 }
3280af22
NIS		 1539 else if (PL_main_start) {
1540 CvDEPTH(PL_main_cv) = 1;
533c011a 1541 PL_op = PL_main_start;
cea2e8a9 1542 CALLRUNOPS(aTHX);
6224f72b
GS		 1543 }
1544
f6b3007c
JH		 1545 my_exit(0);
1546 /* NOTREACHED */
312caa8e 1547 return NULL;
6224f72b
GS		 1548}
1549
954c1994
GS		 1550/*
1551=for apidoc p||get_sv
1552
1553Returns the SV of the specified Perl scalar. If C<create> is set and the
1554Perl variable does not exist then it will be created. If C<create> is not
1555set and the variable does not exist then NULL is returned.
1556
1557=cut
1558*/
1559
6224f72b 1560SV*
864dbfa3 1561Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1562{
1563 GV *gv;
1564#ifdef USE_THREADS
1565 if (name[1] == '\0' && !isALPHA(name[0])) {
1566 PADOFFSET tmp = find_threadsv(name);
411caa50 1567 if (tmp != NOT_IN_PAD)
6224f72b 1568 return THREADSV(tmp);
6224f72b
GS		 1569 }
1570#endif /* USE_THREADS */
1571 gv = gv_fetchpv(name, create, SVt_PV);
1572 if (gv)
1573 return GvSV(gv);
1574 return Nullsv;
1575}
1576
954c1994
GS		 1577/*
1578=for apidoc p||get_av
1579
1580Returns the AV of the specified Perl array. If C<create> is set and the
1581Perl variable does not exist then it will be created. If C<create> is not
1582set and the variable does not exist then NULL is returned.
1583
1584=cut
1585*/
1586
6224f72b 1587AV*
864dbfa3 1588Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1589{
1590 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1591 if (create)
1592 return GvAVn(gv);
1593 if (gv)
1594 return GvAV(gv);
1595 return Nullav;
1596}
1597
954c1994
GS		 1598/*
1599=for apidoc p||get_hv
1600
1601Returns the HV of the specified Perl hash. If C<create> is set and the
1602Perl variable does not exist then it will be created. If C<create> is not
1603set and the variable does not exist then NULL is returned.
1604
1605=cut
1606*/
1607
6224f72b 1608HV*
864dbfa3 1609Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1610{
a0d0e21e
LW		 1611 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1612 if (create)
1613 return GvHVn(gv);
1614 if (gv)
1615 return GvHV(gv);
1616 return Nullhv;
1617}
1618
954c1994
GS		 1619/*
1620=for apidoc p||get_cv
1621
1622Returns the CV of the specified Perl subroutine. If C<create> is set and
1623the Perl subroutine does not exist then it will be declared (which has the
1624same effect as saying C<sub name;>). If C<create> is not set and the
1625subroutine does not exist then NULL is returned.
1626
1627=cut
1628*/
1629
a0d0e21e 1630CV*
864dbfa3 1631Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1632{
1633 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1634 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1635 /* XXX this is probably not what they think they're getting.
1636 * It has the same effect as "sub name;", i.e. just a forward
1637 * declaration! */
8ebc5c01 1638 if (create && !GvCVu(gv))
774d564b 1639 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1640 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1641 Nullop,
a0d0e21e
LW		 1642 Nullop);
1643 if (gv)
8ebc5c01 1644 return GvCVu(gv);
a0d0e21e
LW		 1645 return Nullcv;
1646}
1647
79072805
LW		 1648/* Be sure to refetch the stack pointer after calling these routines. */
1649
954c1994
GS		 1650/*
1651=for apidoc p||call_argv
1652
1653Performs a callback to the specified Perl sub. See L<perlcall>.
1654
1655=cut
1656*/
1657
a0d0e21e 1658I32
864dbfa3 1659Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1660
8ac85365
NIS		 1661 /* See G_* flags in cop.h */
1662 /* null terminated arg list */
8990e307 1663{
a0d0e21e 1664 dSP;
8990e307 1665
924508f0 1666 PUSHMARK(SP);
a0d0e21e 1667 if (argv) {
8990e307 1668 while (*argv) {
a0d0e21e 1669 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1670 argv++;
1671 }
a0d0e21e 1672 PUTBACK;
8990e307 1673 }
864dbfa3 1674 return call_pv(sub_name, flags);
8990e307
LW		 1675}
1676
954c1994
GS		 1677/*
1678=for apidoc p||call_pv
1679
1680Performs a callback to the specified Perl sub. See L<perlcall>.
1681
1682=cut
1683*/
1684
a0d0e21e 1685I32
864dbfa3 1686Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1687 /* name of the subroutine */
1688 /* See G_* flags in cop.h */
a0d0e21e 1689{
864dbfa3 1690 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1691}
1692
954c1994
GS		 1693/*
1694=for apidoc p||call_method
1695
1696Performs a callback to the specified Perl method. The blessed object must
1697be on the stack. See L<perlcall>.
1698
1699=cut
1700*/
1701
a0d0e21e 1702I32
864dbfa3 1703Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1704 /* name of the subroutine */
1705 /* See G_* flags in cop.h */
a0d0e21e 1706{
968b3946 1707 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1708}
1709
1710/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1711/*
1712=for apidoc p||call_sv
1713
1714Performs a callback to the Perl sub whose name is in the SV. See
1715L<perlcall>.
1716
1717=cut
1718*/
1719
a0d0e21e 1720I32
864dbfa3 1721Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1722 /* See G_* flags in cop.h */
a0d0e21e 1723{
924508f0 1724 dSP;
a0d0e21e 1725 LOGOP myop; /* fake syntax tree node */
968b3946 1726 UNOP method_op;
aa689395 1727 I32 oldmark;
13689cfe 1728 volatile I32 retval = 0;
a0d0e21e 1729 I32 oldscope;
54310121 1730 bool oldcatch = CATCH_GET;
6224f72b 1731 int ret;
533c011a 1732 OP* oldop = PL_op;
db36c5a1 1733 dJMPENV;
1e422769 1734
a0d0e21e
LW		 1735 if (flags & G_DISCARD) {
1736 ENTER;
1737 SAVETMPS;
1738 }
1739
aa689395 1740 Zero(&myop, 1, LOGOP);
54310121 1741 myop.op_next = Nullop;
f51d4af5 1742 if (!(flags & G_NOARGS))
aa689395 1743 myop.op_flags |= OPf_STACKED;
54310121 1744 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1745 (flags & G_ARRAY) ? OPf_WANT_LIST :
1746 OPf_WANT_SCALAR);
462e5cf6 1747 SAVEOP();
533c011a 1748 PL_op = (OP*)&myop;
aa689395 1749
3280af22
NIS		 1750 EXTEND(PL_stack_sp, 1);
1751 *++PL_stack_sp = sv;
aa689395 1752 oldmark = TOPMARK;
3280af22 1753 oldscope = PL_scopestack_ix;
a0d0e21e 1754
3280af22 1755 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1756 /* Handle first BEGIN of -d. */
3280af22 1757 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1758 /* Try harder, since this may have been a sighandler, thus
1759 * curstash may be meaningless. */
3280af22 1760 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1761 && !(flags & G_NODEBUG))
533c011a 1762 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1763
968b3946
GS		 1764 if (flags & G_METHOD) {
1765 Zero(&method_op, 1, UNOP);
1766 method_op.op_next = PL_op;
1767 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1768 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1769 PL_op = (OP*)&method_op;
968b3946
GS		 1770 }
1771
312caa8e 1772 if (!(flags & G_EVAL)) {
0cdb2077 1773 CATCH_SET(TRUE);
14dd3ad8 1774 call_body((OP*)&myop, FALSE);
312caa8e 1775 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1776 CATCH_SET(oldcatch);
312caa8e
CS		 1777 }
1778 else {
d78bda3d 1779 myop.op_other = (OP*)&myop;
3280af22 1780 PL_markstack_ptr--;
4633a7c4
LW		 1781 /* we're trying to emulate pp_entertry() here */
1782 {
c09156bb 1783 register PERL_CONTEXT *cx;
54310121 1784 I32 gimme = GIMME_V;
ac27b0f5 1785
4633a7c4
LW		 1786 ENTER;
1787 SAVETMPS;
ac27b0f5 1788
968b3946 1789 push_return(Nullop);
1d76a5c3 1790 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1791 PUSHEVAL(cx, 0, 0);
533c011a 1792 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1793
faef0170 1794 PL_in_eval = EVAL_INEVAL;
4633a7c4 1795 if (flags & G_KEEPERR)
faef0170 1796 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1797 else
38a03e6e 1798 sv_setpv(ERRSV,"");
4633a7c4 1799 }
3280af22 1800 PL_markstack_ptr++;
a0d0e21e 1801
14dd3ad8
GS		 1802#ifdef PERL_FLEXIBLE_EXCEPTIONS
1803 redo_body:
1804 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1805 (OP*)&myop, FALSE);
14dd3ad8
GS		 1806#else
1807 JMPENV_PUSH(ret);
1808#endif
6224f72b
GS		 1809 switch (ret) {
1810 case 0:
14dd3ad8
GS		 1811#ifndef PERL_FLEXIBLE_EXCEPTIONS
1812 redo_body:
1813 call_body((OP*)&myop, FALSE);
1814#endif
312caa8e
CS		 1815 retval = PL_stack_sp - (PL_stack_base + oldmark);
1816 if (!(flags & G_KEEPERR))
1817 sv_setpv(ERRSV,"");
a0d0e21e 1818 break;
6224f72b 1819 case 1:
f86702cc 1820 STATUS_ALL_FAILURE;
a0d0e21e 1821 /* FALL THROUGH */
6224f72b 1822 case 2:
a0d0e21e 1823 /* my_exit() was called */
3280af22 1824 PL_curstash = PL_defstash;
a0d0e21e 1825 FREETMPS;
14dd3ad8 1826 JMPENV_POP;
cc3604b1 1827 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1828 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1829 my_exit_jump();
a0d0e21e 1830 /* NOTREACHED */
6224f72b 1831 case 3:
3280af22 1832 if (PL_restartop) {
533c011a 1833 PL_op = PL_restartop;
3280af22 1834 PL_restartop = 0;
312caa8e 1835 goto redo_body;
a0d0e21e 1836 }
3280af22 1837 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1838 if (flags & G_ARRAY)
1839 retval = 0;
1840 else {
1841 retval = 1;
3280af22 1842 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1843 }
312caa8e 1844 break;
a0d0e21e 1845 }
a0d0e21e 1846
3280af22 1847 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1848 SV **newsp;
1849 PMOP *newpm;
1850 I32 gimme;
c09156bb 1851 register PERL_CONTEXT *cx;
a0a2876f
LW		 1852 I32 optype;
1853
1854 POPBLOCK(cx,newpm);
1855 POPEVAL(cx);
1856 pop_return();
3280af22 1857 PL_curpm = newpm;
a0a2876f 1858 LEAVE;
a0d0e21e 1859 }
14dd3ad8 1860 JMPENV_POP;
a0d0e21e 1861 }
1e422769 1862
a0d0e21e 1863 if (flags & G_DISCARD) {
3280af22 1864 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1865 retval = 0;
1866 FREETMPS;
1867 LEAVE;
1868 }
533c011a 1869 PL_op = oldop;
a0d0e21e
LW		 1870 return retval;
1871}
1872
14dd3ad8 1873#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1874STATIC void *
14dd3ad8 1875S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1876{
1877 OP *myop = va_arg(args, OP*);
1878 int is_eval = va_arg(args, int);
1879
14dd3ad8 1880 call_body(myop, is_eval);
312caa8e
CS		 1881 return NULL;
1882}
14dd3ad8 1883#endif
312caa8e
CS		 1884
1885STATIC void
14dd3ad8 1886S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1887{
312caa8e
CS		 1888 if (PL_op == myop) {
1889 if (is_eval)
f807eda9 1890 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1891 else
f807eda9 1892 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1893 }
1894 if (PL_op)
cea2e8a9 1895 CALLRUNOPS(aTHX);
312caa8e
CS		 1896}
1897
6e72f9df 1898/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1899
954c1994
GS		 1900/*
1901=for apidoc p||eval_sv
1902
1903Tells Perl to C<eval> the string in the SV.
1904
1905=cut
1906*/
1907
a0d0e21e 1908I32
864dbfa3 1909Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1910
8ac85365 1911 /* See G_* flags in cop.h */
a0d0e21e 1912{
924508f0 1913 dSP;
a0d0e21e 1914 UNOP myop; /* fake syntax tree node */
8fa7f367 1915 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1916 volatile I32 retval = 0;
4633a7c4 1917 I32 oldscope;
6224f72b 1918 int ret;
533c011a 1919 OP* oldop = PL_op;
db36c5a1 1920 dJMPENV;
84902520 1921
4633a7c4
LW		 1922 if (flags & G_DISCARD) {
1923 ENTER;
1924 SAVETMPS;
1925 }
1926
462e5cf6 1927 SAVEOP();
533c011a
NIS		 1928 PL_op = (OP*)&myop;
1929 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1930 EXTEND(PL_stack_sp, 1);
1931 *++PL_stack_sp = sv;
1932 oldscope = PL_scopestack_ix;
79072805 1933
4633a7c4
LW		 1934 if (!(flags & G_NOARGS))
1935 myop.op_flags = OPf_STACKED;
79072805 1936 myop.op_next = Nullop;
6e72f9df 1937 myop.op_type = OP_ENTEREVAL;
54310121 1938 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1939 (flags & G_ARRAY) ? OPf_WANT_LIST :
1940 OPf_WANT_SCALAR);
6e72f9df 1941 if (flags & G_KEEPERR)
1942 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1943
14dd3ad8 1944#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1945 redo_body:
14dd3ad8 1946 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1947 (OP*)&myop, TRUE);
14dd3ad8
GS		 1948#else
1949 JMPENV_PUSH(ret);
1950#endif
6224f72b
GS		 1951 switch (ret) {
1952 case 0:
14dd3ad8
GS		 1953#ifndef PERL_FLEXIBLE_EXCEPTIONS
1954 redo_body:
1955 call_body((OP*)&myop,TRUE);
1956#endif
312caa8e
CS		 1957 retval = PL_stack_sp - (PL_stack_base + oldmark);
1958 if (!(flags & G_KEEPERR))
1959 sv_setpv(ERRSV,"");
4633a7c4 1960 break;
6224f72b 1961 case 1:
f86702cc 1962 STATUS_ALL_FAILURE;
4633a7c4 1963 /* FALL THROUGH */
6224f72b 1964 case 2:
4633a7c4 1965 /* my_exit() was called */
3280af22 1966 PL_curstash = PL_defstash;
4633a7c4 1967 FREETMPS;
14dd3ad8 1968 JMPENV_POP;
cc3604b1 1969 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1970 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1971 my_exit_jump();
4633a7c4 1972 /* NOTREACHED */
6224f72b 1973 case 3:
3280af22 1974 if (PL_restartop) {
533c011a 1975 PL_op = PL_restartop;
3280af22 1976 PL_restartop = 0;
312caa8e 1977 goto redo_body;
4633a7c4 1978 }
3280af22 1979 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1980 if (flags & G_ARRAY)
1981 retval = 0;
1982 else {
1983 retval = 1;
3280af22 1984 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1985 }
312caa8e 1986 break;
4633a7c4
LW		 1987 }
1988
14dd3ad8 1989 JMPENV_POP;
4633a7c4 1990 if (flags & G_DISCARD) {
3280af22 1991 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1992 retval = 0;
1993 FREETMPS;
1994 LEAVE;
1995 }
533c011a 1996 PL_op = oldop;
4633a7c4
LW		 1997 return retval;
1998}
1999
954c1994
GS		 2000/*
2001=for apidoc p||eval_pv
2002
2003Tells Perl to C<eval> the given string and return an SV* result.
2004
2005=cut
2006*/
2007
137443ea 2008SV*
864dbfa3 2009Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2010{
2011 dSP;
2012 SV* sv = newSVpv(p, 0);
2013
864dbfa3 2014 eval_sv(sv, G_SCALAR);
137443ea 2015 SvREFCNT_dec(sv);
2016
2017 SPAGAIN;
2018 sv = POPs;
2019 PUTBACK;
2020
2d8e6c8d
GS		 2021 if (croak_on_error && SvTRUE(ERRSV)) {
2022 STRLEN n_a;
cea2e8a9 2023 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2024 }
137443ea 2025
2026 return sv;
2027}
2028
4633a7c4
LW		 2029/* Require a module. */
2030
954c1994
GS		 2031/*
2032=for apidoc p||require_pv
2033
7d3fb230
BS		 2034Tells Perl to C<require> the file named by the string argument. It is
2035analogous to the Perl code C<eval "require '$file'">. It's even
2036implemented that way; consider using Perl_load_module instead.
954c1994 2037
7d3fb230 2038=cut */
954c1994 2039
4633a7c4 2040void
864dbfa3 2041Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2042{
d3acc0f7
JP		 2043 SV* sv;
2044 dSP;
e788e7d3 2045 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2046 PUTBACK;
2047 sv = sv_newmortal();
4633a7c4
LW		 2048 sv_setpv(sv, "require '");
2049 sv_catpv(sv, pv);
2050 sv_catpv(sv, "'");
864dbfa3 2051 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2052 SPAGAIN;
2053 POPSTACK;
79072805
LW		 2054}
2055
79072805 2056void
864dbfa3 2057Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2058{
2059 register GV *gv;
2060
155aba94 2061 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2062 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2063}
2064
76e3520e 2065STATIC void
cea2e8a9 2066S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2067{
ab821d7f 2068 /* This message really ought to be max 23 lines.
75c72d73 2069 * Removed -h because the user already knows that option. Others? */
fb73857a 2070
76e3520e 2071 static char *usage_msg[] = {
fb73857a 2072"-0[octal] specify record separator (\\0, if no argument)",
2073"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2074"-C enable native wide character system interfaces",
1950ee41 2075"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2076"-d[:debugger] run program under debugger",
2077"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2078"-e 'command' one line of program (several -e's allowed, omit programfile)",
2079"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2080"-i[extension] edit <> files in place (makes backup if extension supplied)",
2081"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2082"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2083"-[mM][-]module execute `use/no module...' before executing program",
2084"-n assume 'while (<>) { ... }' loop around program",
2085"-p assume loop like -n but print line also, like sed",
2086"-P run program through C preprocessor before compilation",
2087"-s enable rudimentary parsing for switches after programfile",
2088"-S look for programfile using PATH environment variable",
2089"-T enable tainting checks",
2090"-u dump core after parsing program",
fb73857a 2091"-U allow unsafe operations",
aac3bd0d
GS		 2092"-v print version, subversion (includes VERY IMPORTANT perl info)",
2093"-V[:variable] print configuration summary (or a single Config.pm variable)",
2094"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2095"-W enable all warnings",
2096"-X disable all warnings",
fb73857a 2097"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2098"\n",
2099NULL
2100};
76e3520e 2101 char **p = usage_msg;
fb73857a 2102
b0e47665
GS		 2103 PerlIO_printf(PerlIO_stdout(),
2104 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2105 name);
fb73857a 2106 while (*p)
b0e47665 2107 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2108}
2109
79072805
LW		 2110/* This routine handles any switches that can be given during run */
2111
2112char *
864dbfa3 2113Perl_moreswitches(pTHX_ char *s)
79072805 2114{
ba210ebe 2115 STRLEN numlen;
c07a80fd 2116 U32 rschar;
79072805
LW		 2117
2118 switch (*s) {
2119 case '0':
a863c7d1 2120 {
b21ed0a9 2121 numlen = 0; /* disallow underscores */
dff6d3cd 2122 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2123 SvREFCNT_dec(PL_nrs);
c07a80fd 2124 if (rschar & ~((U8)~0))
3280af22 2125 PL_nrs = &PL_sv_undef;
c07a80fd 2126 else if (!rschar && numlen >= 2)
79cb57f6 2127 PL_nrs = newSVpvn("", 0);
c07a80fd 2128 else {
2129 char ch = rschar;
79cb57f6 2130 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2131 }
2132 return s + numlen;
a863c7d1 2133 }
46487f74
GS		 2134 case 'C':
2135 PL_widesyscalls = TRUE;
2136 s++;
2137 return s;
2304df62 2138 case 'F':
3280af22
NIS		 2139 PL_minus_F = TRUE;
2140 PL_splitstr = savepv(s + 1);
2304df62
AD		 2141 s += strlen(s);
2142 return s;
79072805 2143 case 'a':
3280af22 2144 PL_minus_a = TRUE;
79072805
LW		 2145 s++;
2146 return s;
2147 case 'c':
3280af22 2148 PL_minus_c = TRUE;
79072805
LW		 2149 s++;
2150 return s;
2151 case 'd':
bbce6d69 2152 forbid_setid("-d");
4633a7c4 2153 s++;
70c94a19
RR		 2154 /* The following permits -d:Mod to accepts arguments following an =
2155 in the fashion that -MSome::Mod does. */
2156 if (*s == ':' || *s == '=') {
2157 char *start;
2158 SV *sv;
2159 sv = newSVpv("use Devel::", 0);
2160 start = ++s;
2161 /* We now allow -d:Module=Foo,Bar */
2162 while(isALNUM(*s) || *s==':') ++s;
2163 if (*s != '=')
2164 sv_catpv(sv, start);
2165 else {
2166 sv_catpvn(sv, start, s-start);
2167 sv_catpv(sv, " split(/,/,q{");
2168 sv_catpv(sv, ++s);
2169 sv_catpv(sv, "})");
2170 }
4633a7c4 2171 s += strlen(s);
70c94a19 2172 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2173 }
ed094faf 2174 if (!PL_perldb) {
3280af22 2175 PL_perldb = PERLDB_ALL;
a0d0e21e 2176 init_debugger();
ed094faf 2177 }
79072805
LW		 2178 return s;
2179 case 'D':
0453d815 2180 {
79072805 2181#ifdef DEBUGGING
bbce6d69 2182 forbid_setid("-D");
79072805 2183 if (isALPHA(s[1])) {
04932ac8
DM		 2184 /* if adding extra options, remember to update DEBUG_MASK */
2185 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2186 char *d;
2187
93a17b20 2188 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2189 PL_debug |= 1 << (d - debopts);
79072805
LW		 2190 }
2191 else {
3280af22 2192 PL_debug = atoi(s+1);
79072805
LW		 2193 for (s++; isDIGIT(*s); s++) ;
2194 }
aea4f609 2195 PL_debug |= DEBUG_TOP_FLAG;
79072805 2196#else
0453d815
PM		 2197 if (ckWARN_d(WARN_DEBUGGING))
2198 Perl_warner(aTHX_ WARN_DEBUGGING,
2199 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2200 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2201#endif
2202 /*SUPPRESS 530*/
2203 return s;
0453d815 2204 }
4633a7c4 2205 case 'h':
ac27b0f5 2206 usage(PL_origargv[0]);
6ad3d225 2207 PerlProc_exit(0);
79072805 2208 case 'i':
3280af22
NIS		 2209 if (PL_inplace)
2210 Safefree(PL_inplace);
2211 PL_inplace = savepv(s+1);
79072805 2212 /*SUPPRESS 530*/
3280af22 2213 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2214 if (*s) {
fb73857a 2215 *s++ = '\0';
7b8d334a
GS		 2216 if (*s == '-') /* Additional switches on #! line. */
2217 s++;
2218 }
fb73857a 2219 return s;
2220 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2221 forbid_setid("-I");
fb73857a 2222 ++s;
2223 while (*s && isSPACE(*s))
2224 ++s;
2225 if (*s) {
774d564b 2226 char *e, *p;
0df16ed7
GS		 2227 p = s;
2228 /* ignore trailing spaces (possibly followed by other switches) */
2229 do {
2230 for (e = p; *e && !isSPACE(*e); e++) ;
2231 p = e;
2232 while (isSPACE(*p))
2233 p++;
2234 } while (*p && *p != '-');
2235 e = savepvn(s, e-s);
9c8a64f0 2236 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2237 Safefree(e);
2238 s = p;
2239 if (*s == '-')
2240 s++;
79072805
LW		 2241 }
2242 else
a67e862a 2243 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2244 return s;
79072805 2245 case 'l':
3280af22 2246 PL_minus_l = TRUE;
79072805 2247 s++;
7889fe52
NIS		 2248 if (PL_ors_sv) {
2249 SvREFCNT_dec(PL_ors_sv);
2250 PL_ors_sv = Nullsv;
2251 }
79072805 2252 if (isDIGIT(*s)) {
7889fe52 2253 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2254 numlen = 0; /* disallow underscores */
7889fe52 2255 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2256 s += numlen;
2257 }
2258 else {
3280af22 2259 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2260 PL_ors_sv = newSVpvn("\n\n",2);
2261 }
2262 else {
2263 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2264 }
79072805
LW		 2265 }
2266 return s;
1a30305b 2267 case 'M':
bbce6d69 2268 forbid_setid("-M"); /* XXX ? */
1a30305b 2269 /* FALL THROUGH */
2270 case 'm':
bbce6d69 2271 forbid_setid("-m"); /* XXX ? */
1a30305b 2272 if (*++s) {
a5f75d66 2273 char *start;
11343788 2274 SV *sv;
a5f75d66
AD		 2275 char *use = "use ";
2276 /* -M-foo == 'no foo' */
2277 if (*s == '-') { use = "no "; ++s; }
11343788 2278 sv = newSVpv(use,0);
a5f75d66 2279 start = s;
1a30305b 2280 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2281 while(isALNUM(*s) || *s==':') ++s;
2282 if (*s != '=') {
11343788 2283 sv_catpv(sv, start);
c07a80fd 2284 if (*(start-1) == 'm') {
2285 if (*s != '\0')
cea2e8a9 2286 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2287 sv_catpv( sv, " ()");
c07a80fd 2288 }
2289 } else {
6df41af2 2290 if (s == start)
be98fb35
GS		 2291 Perl_croak(aTHX_ "Module name required with -%c option",
2292 s[-1]);
11343788
MB		 2293 sv_catpvn(sv, start, s-start);
2294 sv_catpv(sv, " split(/,/,q{");
2295 sv_catpv(sv, ++s);
2296 sv_catpv(sv, "})");
c07a80fd 2297 }
1a30305b 2298 s += strlen(s);
5c831c24 2299 if (!PL_preambleav)
3280af22
NIS		 2300 PL_preambleav = newAV();
2301 av_push(PL_preambleav, sv);
1a30305b 2302 }
2303 else
cea2e8a9 2304 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2305 return s;
79072805 2306 case 'n':
3280af22 2307 PL_minus_n = TRUE;
79072805
LW		 2308 s++;
2309 return s;
2310 case 'p':
3280af22 2311 PL_minus_p = TRUE;
79072805
LW		 2312 s++;
2313 return s;
2314 case 's':
bbce6d69 2315 forbid_setid("-s");
3280af22 2316 PL_doswitches = TRUE;
79072805
LW		 2317 s++;
2318 return s;
463ee0b2 2319 case 'T':
3280af22 2320 if (!PL_tainting)
cea2e8a9 2321 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2322 s++;
2323 return s;
79072805 2324 case 'u':
bf4acbe4
GS		 2325#ifdef MACOS_TRADITIONAL
2326 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2327#endif
3280af22 2328 PL_do_undump = TRUE;
79072805
LW		 2329 s++;
2330 return s;
2331 case 'U':
3280af22 2332 PL_unsafe = TRUE;
79072805
LW		 2333 s++;
2334 return s;
2335 case 'v':
8e9464f1 2336#if !defined(DGUX)
b0e47665 2337 PerlIO_printf(PerlIO_stdout(),
d2560b70 2338 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2339 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2340#else /* DGUX */
2341/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2342 PerlIO_printf(PerlIO_stdout(),
2343 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2344 PerlIO_printf(PerlIO_stdout(),
2345 Perl_form(aTHX_ " built under %s at %s %s\n",
2346 OSNAME, __DATE__, __TIME__));
2347 PerlIO_printf(PerlIO_stdout(),
2348 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2349 OSVERS));
8e9464f1
JH		 2350#endif /* !DGUX */
2351
fb73857a 2352#if defined(LOCAL_PATCH_COUNT)
2353 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2354 PerlIO_printf(PerlIO_stdout(),
2355 "\n(with %d registered patch%s, "
2356 "see perl -V for more detail)",
2357 (int)LOCAL_PATCH_COUNT,
2358 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2359#endif
1a30305b 2360
b0e47665 2361 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2362 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2363#ifdef MACOS_TRADITIONAL
2364 PerlIO_printf(PerlIO_stdout(),
084592ab 2365 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2366#endif
79072805 2367#ifdef MSDOS
b0e47665
GS		 2368 PerlIO_printf(PerlIO_stdout(),
2369 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2370#endif
2371#ifdef DJGPP
b0e47665
GS		 2372 PerlIO_printf(PerlIO_stdout(),
2373 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2374 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2375#endif
79072805 2376#ifdef OS2
b0e47665
GS		 2377 PerlIO_printf(PerlIO_stdout(),
2378 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2379 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2380#endif
79072805 2381#ifdef atarist
b0e47665
GS		 2382 PerlIO_printf(PerlIO_stdout(),
2383 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2384#endif
a3f9223b 2385#ifdef __BEOS__
b0e47665
GS		 2386 PerlIO_printf(PerlIO_stdout(),
2387 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2388#endif
1d84e8df 2389#ifdef MPE
b0e47665 2390 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2391 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2392#endif
9d116dd7 2393#ifdef OEMVS
b0e47665
GS		 2394 PerlIO_printf(PerlIO_stdout(),
2395 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2396#endif
495c5fdc 2397#ifdef __VOS__
b0e47665
GS		 2398 PerlIO_printf(PerlIO_stdout(),
2399 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2400#endif
092bebab 2401#ifdef __OPEN_VM
b0e47665
GS		 2402 PerlIO_printf(PerlIO_stdout(),
2403 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2404#endif
a1a0e61e 2405#ifdef POSIX_BC
b0e47665
GS		 2406 PerlIO_printf(PerlIO_stdout(),
2407 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2408#endif
61ae2fbf 2409#ifdef __MINT__
b0e47665
GS		 2410 PerlIO_printf(PerlIO_stdout(),
2411 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2412#endif
f83d2536 2413#ifdef EPOC
b0e47665
GS		 2414 PerlIO_printf(PerlIO_stdout(),
2415 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2416#endif
e1caacb4
JH		 2417#ifdef UNDER_CE
2418 printf("WINCE port by Rainer Keuchel, 2001\n");
2419 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2420 wce_hitreturn();
2421#endif
baed7233
DL		 2422#ifdef BINARY_BUILD_NOTICE
2423 BINARY_BUILD_NOTICE;
2424#endif
b0e47665
GS		 2425 PerlIO_printf(PerlIO_stdout(),
2426 "\n\
79072805 2427Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2428GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2429Complete documentation for Perl, including FAQ lists, should be found on\n\
2430this system using `man perl' or `perldoc perl'. If you have access to the\n\
2431Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2432 PerlProc_exit(0);
79072805 2433 case 'w':
599cee73 2434 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2435 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2436 s++;
2437 return s;
2438 case 'W':
ac27b0f5 2439 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2440 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2441 s++;
2442 return s;
2443 case 'X':
ac27b0f5 2444 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2445 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2446 s++;
2447 return s;
a0d0e21e 2448 case '*':
79072805
LW		 2449 case ' ':
2450 if (s[1] == '-') /* Additional switches on #! line. */
2451 return s+2;
2452 break;
a0d0e21e 2453 case '-':
79072805 2454 case 0:
51882d45 2455#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2456 case '\r':
2457#endif
79072805
LW		 2458 case '\n':
2459 case '\t':
2460 break;
aa689395 2461#ifdef ALTERNATE_SHEBANG
2462 case 'S': /* OS/2 needs -S on "extproc" line. */
2463 break;
2464#endif
a0d0e21e 2465 case 'P':
3280af22 2466 if (PL_preprocess)
a0d0e21e
LW		 2467 return s+1;
2468 /* FALL THROUGH */
79072805 2469 default:
cea2e8a9 2470 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2471 }
2472 return Nullch;
2473}
2474
2475/* compliments of Tom Christiansen */
2476
2477/* unexec() can be found in the Gnu emacs distribution */
ee580363 2478/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2479
2480void
864dbfa3 2481Perl_my_unexec(pTHX)
79072805
LW		 2482{
2483#ifdef UNEXEC
46fc3d4c 2484 SV* prog;
2485 SV* file;
ee580363 2486 int status = 1;
79072805
LW		 2487 extern int etext;
2488
ee580363 2489 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2490 sv_catpv(prog, "/perl");
6b88bc9c 2491 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2492 sv_catpv(file, ".perldump");
79072805 2493
ee580363
GS		 2494 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2495 /* unexec prints msg to stderr in case of failure */
6ad3d225 2496 PerlProc_exit(status);
79072805 2497#else
a5f75d66
AD		 2498# ifdef VMS
2499# include <lib$routines.h>
2500 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2501# else
79072805 2502 ABORT(); /* for use with undump */
aa689395 2503# endif
a5f75d66 2504#endif
79072805
LW		 2505}
2506
cb68f92d
GS		 2507/* initialize curinterp */
2508STATIC void
cea2e8a9 2509S_init_interp(pTHX)
cb68f92d
GS		 2510{
2511
066ef5b5 2512#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2513#define I_REINIT \
6b88bc9c
GS		 2514 STMT_START { \
2515 PL_chopset = " \n-"; \
2516 PL_copline = NOLINE; \
2517 PL_curcop = &PL_compiling;\
2518 PL_curcopdb = NULL; \
2519 PL_dbargs = 0; \
3967c732 2520 PL_dumpindent = 4; \
6b88bc9c
GS		 2521 PL_laststatval = -1; \
2522 PL_laststype = OP_STAT; \
2523 PL_maxscream = -1; \
2524 PL_maxsysfd = MAXSYSFD; \
2525 PL_statname = Nullsv; \
2526 PL_tmps_floor = -1; \
2527 PL_tmps_ix = -1; \
2528 PL_op_mask = NULL; \
6b88bc9c
GS		 2529 PL_laststatval = -1; \
2530 PL_laststype = OP_STAT; \
2531 PL_mess_sv = Nullsv; \
2532 PL_splitstr = " "; \
2533 PL_generation = 100; \
2534 PL_exitlist = NULL; \
2535 PL_exitlistlen = 0; \
2536 PL_regindent = 0; \
2537 PL_in_clean_objs = FALSE; \
2538 PL_in_clean_all = FALSE; \
2539 PL_profiledata = NULL; \
2540 PL_rsfp = Nullfp; \
2541 PL_rsfp_filters = Nullav; \
24d3c518 2542 PL_dirty = FALSE; \
cb68f92d 2543 } STMT_END
9666903d 2544 I_REINIT;
066ef5b5
GS		 2545#else
2546# ifdef MULTIPLICITY
2547# define PERLVAR(var,type)
51371543 2548# define PERLVARA(var,n,type)
cea2e8a9 2549# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2550# if defined(USE_THREADS)
2551# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2552# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2553# else /* !USE_THREADS */
2554# define PERLVARI(var,type,init) aTHX->var = init;
2555# define PERLVARIC(var,type,init) aTHX->var = init;
2556# endif /* USE_THREADS */
cea2e8a9 2557# else
c5be433b
GS		 2558# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2559# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2560# endif
066ef5b5
GS		 2561# include "intrpvar.h"
2562# ifndef USE_THREADS
2563# include "thrdvar.h"
2564# endif
2565# undef PERLVAR
51371543 2566# undef PERLVARA
066ef5b5
GS		 2567# undef PERLVARI
2568# undef PERLVARIC
3967c732 2569# else
066ef5b5 2570# define PERLVAR(var,type)
51371543 2571# define PERLVARA(var,n,type)
533c011a
NIS		 2572# define PERLVARI(var,type,init) PL_##var = init;
2573# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2574# include "intrpvar.h"
2575# ifndef USE_THREADS
2576# include "thrdvar.h"
2577# endif
2578# undef PERLVAR
51371543 2579# undef PERLVARA
066ef5b5
GS		 2580# undef PERLVARI
2581# undef PERLVARIC
2582# endif
cb68f92d
GS		 2583#endif
2584
cb68f92d
GS		 2585}
2586
76e3520e 2587STATIC void
cea2e8a9 2588S_init_main_stash(pTHX)
79072805 2589{
463ee0b2 2590 GV *gv;
6e72f9df 2591
2592 /* Note that strtab is a rather special HV. Assumptions are made
2593 about not iterating on it, and not adding tie magic to it.
2594 It is properly deallocated in perl_destruct() */
3280af22 2595 PL_strtab = newHV();
5f08fbcd
GS		 2596#ifdef USE_THREADS
2597 MUTEX_INIT(&PL_strtab_mutex);
2598#endif
3280af22
NIS		 2599 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2600 hv_ksplit(PL_strtab, 512);
ac27b0f5 2601
3280af22 2602 PL_curstash = PL_defstash = newHV();
79cb57f6 2603 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2604 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2605 SvREFCNT_dec(GvHV(gv));
3280af22 2606 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2607 SvREADONLY_on(gv);
3280af22
NIS		 2608 HvNAME(PL_defstash) = savepv("main");
2609 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2610 GvMULTI_on(PL_incgv);
2611 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2612 GvMULTI_on(PL_hintgv);
2613 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2614 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2615 GvMULTI_on(PL_errgv);
2616 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2617 GvMULTI_on(PL_replgv);
cea2e8a9 2618 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2619 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2620 sv_setpvn(ERRSV, "", 0);
3280af22 2621 PL_curstash = PL_defstash;
11faa288 2622 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2623 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2624 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2625 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2626 /* We must init $/ before switches are processed. */
864dbfa3 2627 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2628}
2629
76e3520e 2630STATIC void
cea2e8a9 2631S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2632{
6c4ab083 2633 *fdscript = -1;
79072805 2634
3280af22
NIS		 2635 if (PL_e_script) {
2636 PL_origfilename = savepv("-e");
96436eeb 2637 }
6c4ab083
GS		 2638 else {
2639 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2640 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2641
2642 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2643 char *s = scriptname + 8;
2644 *fdscript = atoi(s);
2645 while (isDIGIT(*s))
2646 s++;
2647 if (*s) {
2648 scriptname = savepv(s + 1);
3280af22
NIS		 2649 Safefree(PL_origfilename);
2650 PL_origfilename = scriptname;
6c4ab083
GS		 2651 }
2652 }
2653 }
2654
f4dd75d9
GS		 2655#ifdef USE_ITHREADS
2656 Safefree(CopFILE(PL_curcop));
2657#else
2658 SvREFCNT_dec(CopFILEGV(PL_curcop));
2659#endif
57843af0 2660 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2661 if (strEQ(PL_origfilename,"-"))
79072805 2662 scriptname = "";
01f988be 2663 if (*fdscript >= 0) {
3280af22 2664 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2665#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2666 if (PL_rsfp)
2667 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2668#endif
2669 }
3280af22 2670 else if (PL_preprocess) {
46fc3d4c 2671 char *cpp_cfg = CPPSTDIN;
79cb57f6 2672 SV *cpp = newSVpvn("",0);
46fc3d4c 2673 SV *cmd = NEWSV(0,0);
2674
2675 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2676 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2677 sv_catpv(cpp, cpp_cfg);
79072805 2678
0df16ed7 2679 sv_catpvn(sv, "-I", 2);
fed7345c 2680 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2681
14953ddc
MB		 2682 DEBUG_P(PerlIO_printf(Perl_debug_log,
2683 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2684 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2685#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2686 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2687sed %s -e \"/^[^#]/b\" \
2688 -e \"/^#[ ]*include[ ]/b\" \
2689 -e \"/^#[ ]*define[ ]/b\" \
2690 -e \"/^#[ ]*if[ ]/b\" \
2691 -e \"/^#[ ]*ifdef[ ]/b\" \
2692 -e \"/^#[ ]*ifndef[ ]/b\" \
2693 -e \"/^#[ ]*else/b\" \
2694 -e \"/^#[ ]*elif[ ]/b\" \
2695 -e \"/^#[ ]*undef[ ]/b\" \
2696 -e \"/^#[ ]*endif/b\" \
2697 -e \"s/^#.*//\" \
894356b3 2698 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2699 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2700#else
092bebab 2701# ifdef __OPEN_VM
cea2e8a9 2702 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2703%s %s -e '/^[^#]/b' \
2704 -e '/^#[ ]*include[ ]/b' \
2705 -e '/^#[ ]*define[ ]/b' \
2706 -e '/^#[ ]*if[ ]/b' \
2707 -e '/^#[ ]*ifdef[ ]/b' \
2708 -e '/^#[ ]*ifndef[ ]/b' \
2709 -e '/^#[ ]*else/b' \
2710 -e '/^#[ ]*elif[ ]/b' \
2711 -e '/^#[ ]*undef[ ]/b' \
2712 -e '/^#[ ]*endif/b' \
2713 -e 's/^[ ]*#.*//' \
894356b3 2714 %s | %"SVf" %"SVf" %s",
092bebab 2715# else
cea2e8a9 2716 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2717%s %s -e '/^[^#]/b' \
2718 -e '/^#[ ]*include[ ]/b' \
2719 -e '/^#[ ]*define[ ]/b' \
2720 -e '/^#[ ]*if[ ]/b' \
2721 -e '/^#[ ]*ifdef[ ]/b' \
2722 -e '/^#[ ]*ifndef[ ]/b' \
2723 -e '/^#[ ]*else/b' \
2724 -e '/^#[ ]*elif[ ]/b' \
2725 -e '/^#[ ]*undef[ ]/b' \
2726 -e '/^#[ ]*endif/b' \
2727 -e 's/^[ ]*#.*//' \
894356b3 2728 %s | %"SVf" -C %"SVf" %s",
092bebab 2729# endif
79072805
LW		 2730#ifdef LOC_SED
2731 LOC_SED,
2732#else
2733 "sed",
2734#endif
3280af22 2735 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2736#endif
46fc3d4c 2737 scriptname, cpp, sv, CPPMINUS);
3280af22 2738 PL_doextract = FALSE;
79072805 2739#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2740 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2741#ifdef HAS_SETEUID
b28d0864 2742 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2743#else
2744#ifdef HAS_SETREUID
b28d0864 2745 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2746#else
2747#ifdef HAS_SETRESUID
b28d0864 2748 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2749#else
b28d0864 2750 PerlProc_setuid(PL_uid);
79072805
LW		 2751#endif
2752#endif
85e6fe83 2753#endif
b28d0864 2754 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2755 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2756 }
2757#endif /* IAMSUID */
3280af22 2758 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2759 SvREFCNT_dec(cmd);
2760 SvREFCNT_dec(cpp);
79072805
LW		 2761 }
2762 else if (!*scriptname) {
bbce6d69 2763 forbid_setid("program input from stdin");
3280af22 2764 PL_rsfp = PerlIO_stdin();
79072805 2765 }
96436eeb 2766 else {
3280af22 2767 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2768#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2769 if (PL_rsfp)
2770 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2771#endif
2772 }
3280af22 2773 if (!PL_rsfp) {
13281fa4 2774#ifdef DOSUID
a687059c 2775#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2776 if (PL_euid &&
cc49e20b 2777 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2778 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2779 {
46fc3d4c 2780 /* try again */
a7cb1f99 2781 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2782 (int)PERL_REVISION, (int)PERL_VERSION,
2783 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2784 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2785 }
2786#endif
2787#endif
584d69ec
JH		 2788#ifdef IAMSUID
2789 errno = EPERM;
2790 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2791 Strerror(errno));
2792#else
cea2e8a9 2793 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2794 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2795#endif
13281fa4 2796 }
79072805 2797}
8d063cd8 2798
7b89560d
JH		 2799/* Mention
2800 * I_SYSSTATVFS HAS_FSTATVFS
2801 * I_SYSMOUNT
c890dc6c 2802 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2803 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2804 * here so that metaconfig picks them up. */
2805
104d25b7 2806#ifdef IAMSUID
864dbfa3 2807STATIC int
e688b231 2808S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2809{
0545a864
JH		 2810 int check_okay = 0; /* able to do all the required sys/libcalls */
2811 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2812/*
ad27e871 2813 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2814 * fstatvfs() is UNIX98.
0545a864 2815 * fstatfs() is 4.3 BSD.
ad27e871 2816 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2817 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2818 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2819 */
2820
6439433f
JH		 2821#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2822
2823# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2824 defined(HAS_FSTATVFS)
2825# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2826 struct statvfs stfs;
6439433f 2827
104d25b7
JH		 2828 check_okay = fstatvfs(fd, &stfs) == 0;
2829 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2830# endif /* fstatvfs */
ac27b0f5 2831
6439433f
JH		 2832# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2833 defined(PERL_MOUNT_NOSUID) && \
2834 defined(HAS_FSTATFS) && \
2835 defined(HAS_STRUCT_STATFS) && \
2836 defined(HAS_STRUCT_STATFS_F_FLAGS)
2837# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2838 struct statfs stfs;
6439433f 2839
104d25b7 2840 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2841 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2842# endif /* fstatfs */
2843
2844# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2845 defined(PERL_MOUNT_NOSUID) && \
2846 defined(HAS_FSTAT) && \
2847 defined(HAS_USTAT) && \
2848 defined(HAS_GETMNT) && \
2849 defined(HAS_STRUCT_FS_DATA) && \
2850 defined(NOSTAT_ONE)
2851# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2852 struct stat fdst;
6439433f 2853
0545a864 2854 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2855 struct ustat us;
2856 if (ustat(fdst.st_dev, &us) == 0) {
2857 struct fs_data fsd;
2858 /* NOSTAT_ONE here because we're not examining fields which
2859 * vary between that case and STAT_ONE. */
ad27e871 2860 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2861 size_t cmplen = sizeof(us.f_fname);
2862 if (sizeof(fsd.fd_req.path) < cmplen)
2863 cmplen = sizeof(fsd.fd_req.path);
2864 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2865 fdst.st_dev == fsd.fd_req.dev) {
2866 check_okay = 1;
2867 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2868 }
2869 }
2870 }
2871 }
0545a864 2872 }
6439433f
JH		 2873# endif /* fstat+ustat+getmnt */
2874
2875# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2876 defined(HAS_GETMNTENT) && \
2877 defined(HAS_HASMNTOPT) && \
2878 defined(MNTOPT_NOSUID)
2879# define FD_ON_NOSUID_CHECK_OKAY
2880 FILE *mtab = fopen("/etc/mtab", "r");
2881 struct mntent *entry;
2882 struct stat stb, fsb;
104d25b7
JH		 2883
2884 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2885 while (entry = getmntent(mtab)) {
2886 if (stat(entry->mnt_dir, &fsb) == 0
2887 && fsb.st_dev == stb.st_dev)
2888 {
2889 /* found the filesystem */
2890 check_okay = 1;
2891 if (hasmntopt(entry, MNTOPT_NOSUID))
2892 on_nosuid = 1;
2893 break;
2894 } /* A single fs may well fail its stat(). */
2895 }
104d25b7
JH		 2896 }
2897 if (mtab)
6439433f
JH		 2898 fclose(mtab);
2899# endif /* getmntent+hasmntopt */
0545a864 2900
ac27b0f5 2901 if (!check_okay)
0545a864 2902 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2903 return on_nosuid;
2904}
2905#endif /* IAMSUID */
2906
76e3520e 2907STATIC void
cea2e8a9 2908S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2909{
155aba94 2910#ifdef IAMSUID
96436eeb 2911 int which;
155aba94 2912#endif
96436eeb 2913
13281fa4
LW		 2914 /* do we need to emulate setuid on scripts? */
2915
2916 /* This code is for those BSD systems that have setuid #! scripts disabled
2917 * in the kernel because of a security problem. Merely defining DOSUID
2918 * in perl will not fix that problem, but if you have disabled setuid
2919 * scripts in the kernel, this will attempt to emulate setuid and setgid
2920 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2921 * root version must be called suidperl or sperlN.NNN. If regular perl
2922 * discovers that it has opened a setuid script, it calls suidperl with
2923 * the same argv that it had. If suidperl finds that the script it has
2924 * just opened is NOT setuid root, it sets the effective uid back to the
2925 * uid. We don't just make perl setuid root because that loses the
2926 * effective uid we had before invoking perl, if it was different from the
2927 * uid.
13281fa4
LW		 2928 *
2929 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2930 * be defined in suidperl only. suidperl must be setuid root. The
2931 * Configure script will set this up for you if you want it.
2932 */
a687059c 2933
13281fa4 2934#ifdef DOSUID
6e72f9df 2935 char *s, *s2;
a0d0e21e 2936
b28d0864 2937 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2938 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2939 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2940 I32 len;
2d8e6c8d 2941 STRLEN n_a;
13281fa4 2942
a687059c 2943#ifdef IAMSUID
fe14fcc3 2944#ifndef HAS_SETREUID
a687059c
LW		 2945 /* On this access check to make sure the directories are readable,
2946 * there is actually a small window that the user could use to make
2947 * filename point to an accessible directory. So there is a faint
2948 * chance that someone could execute a setuid script down in a
2949 * non-accessible directory. I don't know what to do about that.
2950 * But I don't think it's too important. The manual lies when
2951 * it says access() is useful in setuid programs.
2952 */
cc49e20b 2953 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2954 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2955#else
2956 /* If we can swap euid and uid, then we can determine access rights
2957 * with a simple stat of the file, and then compare device and
2958 * inode to make sure we did stat() on the same file we opened.
2959 * Then we just have to make sure he or she can execute it.
2960 */
2961 {
2962 struct stat tmpstatbuf;
2963
85e6fe83
LW		 2964 if (
2965#ifdef HAS_SETREUID
b28d0864 2966 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2967#else
2968# if HAS_SETRESUID
b28d0864 2969 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2970# endif
85e6fe83 2971#endif
b28d0864 2972 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2973 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2974 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2975 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2976#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2977 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2978 Perl_croak(aTHX_ "Permission denied");
104d25b7 2979#endif
b28d0864
NIS		 2980 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2981 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2982 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2983 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2984 }
85e6fe83
LW		 2985 if (
2986#ifdef HAS_SETREUID
b28d0864 2987 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2988#else
2989# if defined(HAS_SETRESUID)
b28d0864 2990 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2991# endif
85e6fe83 2992#endif
b28d0864 2993 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2994 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2995 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2996 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2997 }
fe14fcc3 2998#endif /* HAS_SETREUID */
a687059c
LW		 2999#endif /* IAMSUID */
3000
b28d0864 3001 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3002 Perl_croak(aTHX_ "Permission denied");
b28d0864 3003 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3004 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3005 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3006 CopLINE_inc(PL_curcop);
6b88bc9c 3007 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3008 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3009 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3010 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3011 if (*s == ' ') s++;
45d8adaa 3012 while (!isSPACE(*s)) s++;
2d8e6c8d 3013 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3014 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3015 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3016 Perl_croak(aTHX_ "Not a perl script");
a687059c 3017 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3018 /*
3019 * #! arg must be what we saw above. They can invoke it by
3020 * mentioning suidperl explicitly, but they may not add any strange
3021 * arguments beyond what #! says if they do invoke suidperl that way.
3022 */
3023 len = strlen(validarg);
3024 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3025 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3026 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3027
3028#ifndef IAMSUID
b28d0864
NIS		 3029 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3030 PL_euid == PL_statbuf.st_uid)
3031 if (!PL_do_undump)
cea2e8a9 3032 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3033FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3034#endif /* IAMSUID */
13281fa4 3035
b28d0864
NIS		 3036 if (PL_euid) { /* oops, we're not the setuid root perl */
3037 (void)PerlIO_close(PL_rsfp);
13281fa4 3038#ifndef IAMSUID
46fc3d4c 3039 /* try again */
a7cb1f99 3040 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3041 (int)PERL_REVISION, (int)PERL_VERSION,
3042 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3043#endif
cea2e8a9 3044 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3045 }
3046
b28d0864 3047 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3048#ifdef HAS_SETEGID
b28d0864 3049 (void)setegid(PL_statbuf.st_gid);
a687059c 3050#else
fe14fcc3 3051#ifdef HAS_SETREGID
b28d0864 3052 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3053#else
3054#ifdef HAS_SETRESGID
b28d0864 3055 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3056#else
b28d0864 3057 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3058#endif
3059#endif
85e6fe83 3060#endif
b28d0864 3061 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3062 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3063 }
b28d0864
NIS		 3064 if (PL_statbuf.st_mode & S_ISUID) {
3065 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3066#ifdef HAS_SETEUID
b28d0864 3067 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3068#else
fe14fcc3 3069#ifdef HAS_SETREUID
b28d0864 3070 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3071#else
3072#ifdef HAS_SETRESUID
b28d0864 3073 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3074#else
b28d0864 3075 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3076#endif
3077#endif
85e6fe83 3078#endif
b28d0864 3079 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3080 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3081 }
b28d0864 3082 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3083#ifdef HAS_SETEUID
b28d0864 3084 (void)seteuid((Uid_t)PL_uid);
a687059c 3085#else
fe14fcc3 3086#ifdef HAS_SETREUID
b28d0864 3087 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3088#else
85e6fe83 3089#ifdef HAS_SETRESUID
b28d0864 3090 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3091#else
b28d0864 3092 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3093#endif
a687059c
LW		 3094#endif
3095#endif
b28d0864 3096 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3097 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3098 }
748a9306 3099 init_ids();
b28d0864 3100 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3101 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3102 }
3103#ifdef IAMSUID
6b88bc9c 3104 else if (PL_preprocess)
cea2e8a9 3105 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3106 else if (fdscript >= 0)
cea2e8a9 3107 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3108 else
cea2e8a9 3109 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3110
3111 /* We absolutely must clear out any saved ids here, so we */
3112 /* exec the real perl, substituting fd script for scriptname. */
3113 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3114 PerlIO_rewind(PL_rsfp);
3115 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3116 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3117 if (!PL_origargv[which])
cea2e8a9
GS		 3118 Perl_croak(aTHX_ "Permission denied");
3119 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3120 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3121#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3122 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3123#endif
a7cb1f99 3124 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3125 (int)PERL_REVISION, (int)PERL_VERSION,
3126 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3127 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3128#endif /* IAMSUID */
a687059c 3129#else /* !DOSUID */
3280af22 3130 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3131#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3132 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3133 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3134 ||
b28d0864 3135 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3136 )
b28d0864 3137 if (!PL_do_undump)
cea2e8a9 3138 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3139FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3140#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3141 /* not set-id, must be wrapped */
a687059c 3142 }
13281fa4 3143#endif /* DOSUID */
79072805 3144}
13281fa4 3145
76e3520e 3146STATIC void
cea2e8a9 3147S_find_beginning(pTHX)
79072805 3148{
6e72f9df 3149 register char *s, *s2;
33b78306
LW		 3150
3151 /* skip forward in input to the real script? */
3152
bbce6d69 3153 forbid_setid("-x");
bf4acbe4 3154#ifdef MACOS_TRADITIONAL
084592ab 3155 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3156
bf4acbe4
GS		 3157 while (PL_doextract || gMacPerl_AlwaysExtract) {
3158 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3159 if (!gMacPerl_AlwaysExtract)
3160 Perl_croak(aTHX_ "No Perl script found in input\n");
3161
3162 if (PL_doextract) /* require explicit override ? */
3163 if (!OverrideExtract(PL_origfilename))
3164 Perl_croak(aTHX_ "User aborted script\n");
3165 else
3166 PL_doextract = FALSE;
3167
3168 /* Pater peccavi, file does not have #! */
3169 PerlIO_rewind(PL_rsfp);
ac27b0f5 3170
bf4acbe4
GS		 3171 break;
3172 }
3173#else
3280af22
NIS		 3174 while (PL_doextract) {
3175 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3176 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3177#endif
4f0c37ba
IZ		 3178 s2 = s;
3179 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3180 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3181 PL_doextract = FALSE;
6e72f9df 3182 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3183 s2 = s;
3184 while (*s == ' ' || *s == '\t') s++;
3185 if (*s++ == '-') {
3186 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3187 if (strnEQ(s2-4,"perl",4))
3188 /*SUPPRESS 530*/
155aba94
GS		 3189 while ((s = moreswitches(s)))
3190 ;
33b78306 3191 }
95e8664e
CN		 3192#ifdef MACOS_TRADITIONAL
3193 break;
3194#endif
83025b21
LW		 3195 }
3196 }
3197}
3198
afe37c7d 3199
76e3520e 3200STATIC void
cea2e8a9 3201S_init_ids(pTHX)
352d5a3a 3202{
d8eceb89
JH		 3203 PL_uid = PerlProc_getuid();
3204 PL_euid = PerlProc_geteuid();
3205 PL_gid = PerlProc_getgid();
3206 PL_egid = PerlProc_getegid();
748a9306 3207#ifdef VMS
b28d0864
NIS		 3208 PL_uid |= PL_gid << 16;
3209 PL_euid |= PL_egid << 16;
748a9306 3210#endif
3280af22 3211 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3212}
79072805 3213
76e3520e 3214STATIC void
cea2e8a9 3215S_forbid_setid(pTHX_ char *s)
bbce6d69 3216{
3280af22 3217 if (PL_euid != PL_uid)
cea2e8a9 3218 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3219 if (PL_egid != PL_gid)
cea2e8a9 3220 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3221}
3222
1ee4443e
IZ		 3223void
3224Perl_init_debugger(pTHX)
748a9306 3225{
1ee4443e
IZ		 3226 HV *ostash = PL_curstash;
3227
3280af22
NIS		 3228 PL_curstash = PL_debstash;
3229 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3230 AvREAL_off(PL_dbargs);
3231 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3232 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3233 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3234 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3235 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3236 sv_setiv(PL_DBsingle, 0);
3280af22 3237 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3238 sv_setiv(PL_DBtrace, 0);
3280af22 3239 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3240 sv_setiv(PL_DBsignal, 0);
1ee4443e 3241 PL_curstash = ostash;
352d5a3a
LW		 3242}
3243
2ce36478
SM		 3244#ifndef STRESS_REALLOC
3245#define REASONABLE(size) (size)
3246#else
3247#define REASONABLE(size) (1) /* unreasonable */
3248#endif
3249
11343788 3250void
cea2e8a9 3251Perl_init_stacks(pTHX)
79072805 3252{
e336de0d 3253 /* start with 128-item stack and 8K cxstack */
3280af22 3254 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3255 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3256 PL_curstackinfo->si_type = PERLSI_MAIN;
3257 PL_curstack = PL_curstackinfo->si_stack;
3258 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3259
3280af22
NIS		 3260 PL_stack_base = AvARRAY(PL_curstack);
3261 PL_stack_sp = PL_stack_base;
3262 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3263
3280af22
NIS		 3264 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3265 PL_tmps_floor = -1;
3266 PL_tmps_ix = -1;
3267 PL_tmps_max = REASONABLE(128);
8990e307 3268
3280af22
NIS		 3269 New(54,PL_markstack,REASONABLE(32),I32);
3270 PL_markstack_ptr = PL_markstack;
3271 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3272
ce2f7c3b 3273 SET_MARK_OFFSET;
e336de0d 3274
3280af22
NIS		 3275 New(54,PL_scopestack,REASONABLE(32),I32);
3276 PL_scopestack_ix = 0;
3277 PL_scopestack_max = REASONABLE(32);
79072805 3278
3280af22
NIS		 3279 New(54,PL_savestack,REASONABLE(128),ANY);
3280 PL_savestack_ix = 0;
3281 PL_savestack_max = REASONABLE(128);
79072805 3282
3280af22
NIS		 3283 New(54,PL_retstack,REASONABLE(16),OP*);
3284 PL_retstack_ix = 0;
3285 PL_retstack_max = REASONABLE(16);
378cc40b 3286}
33b78306 3287
2ce36478
SM		 3288#undef REASONABLE
3289
76e3520e 3290STATIC void
cea2e8a9 3291S_nuke_stacks(pTHX)
6e72f9df 3292{
3280af22
NIS		 3293 while (PL_curstackinfo->si_next)
3294 PL_curstackinfo = PL_curstackinfo->si_next;
3295 while (PL_curstackinfo) {
3296 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3297 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3298 Safefree(PL_curstackinfo->si_cxstack);
3299 Safefree(PL_curstackinfo);
3300 PL_curstackinfo = p;
e336de0d 3301 }
3280af22
NIS		 3302 Safefree(PL_tmps_stack);
3303 Safefree(PL_markstack);
3304 Safefree(PL_scopestack);
3305 Safefree(PL_savestack);
3306 Safefree(PL_retstack);
378cc40b 3307}
33b78306 3308
76e3520e 3309#ifndef PERL_OBJECT
760ac839 3310static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3311#endif
7aa04957 3312
76e3520e 3313STATIC void
cea2e8a9 3314S_init_lexer(pTHX)
8990e307 3315{
76e3520e
GS		 3316#ifdef PERL_OBJECT
3317 PerlIO *tmpfp;
3318#endif
3280af22
NIS		 3319 tmpfp = PL_rsfp;
3320 PL_rsfp = Nullfp;
3321 lex_start(PL_linestr);
3322 PL_rsfp = tmpfp;
79cb57f6 3323 PL_subname = newSVpvn("main",4);
8990e307
LW		 3324}
3325
76e3520e 3326STATIC void
cea2e8a9 3327S_init_predump_symbols(pTHX)
45d8adaa 3328{
93a17b20 3329 GV *tmpgv;
af8c498a 3330 IO *io;
79072805 3331
864dbfa3 3332 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3333 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3334 GvMULTI_on(PL_stdingv);
af8c498a 3335 io = GvIOp(PL_stdingv);
a04651f4 3336 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3337 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3338 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3339 GvMULTI_on(tmpgv);
af8c498a 3340 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3341
85e6fe83 3342 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3343 GvMULTI_on(tmpgv);
af8c498a 3344 io = GvIOp(tmpgv);
a04651f4 3345 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3346 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3347 setdefout(tmpgv);
adbc6bb1 3348 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3349 GvMULTI_on(tmpgv);
af8c498a 3350 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3351
bf49b057
GS		 3352 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3353 GvMULTI_on(PL_stderrgv);
3354 io = GvIOp(PL_stderrgv);
a04651f4 3355 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3356 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3357 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3358 GvMULTI_on(tmpgv);
af8c498a 3359 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3360
3280af22 3361 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3362
bf4acbe4
GS		 3363 if (PL_osname)
3364 Safefree(PL_osname);
3365 PL_osname = savepv(OSNAME);
79072805 3366}
33b78306 3367
76e3520e 3368STATIC void
cea2e8a9 3369S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3370{
79072805
LW		 3371 char *s;
3372 SV *sv;
3373 GV* tmpgv;
9cbac4c7 3374#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3375 char **dup_env_base = 0;
103a7189 3376 int dup_env_count = 0;
9cbac4c7 3377#endif
fe14fcc3 3378
79072805 3379 argc--,argv++; /* skip name of script */
3280af22 3380 if (PL_doswitches) {
79072805
LW		 3381 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3382 if (!argv[0][1])
3383 break;
379d538a 3384 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3385 argc--,argv++;
3386 break;
3387 }
155aba94 3388 if ((s = strchr(argv[0], '='))) {
79072805 3389 *s++ = '\0';
85e6fe83 3390 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3391 }
3392 else
85e6fe83 3393 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3394 }
79072805 3395 }
3280af22
NIS		 3396 PL_toptarget = NEWSV(0,0);
3397 sv_upgrade(PL_toptarget, SVt_PVFM);
3398 sv_setpvn(PL_toptarget, "", 0);
3399 PL_bodytarget = NEWSV(0,0);
3400 sv_upgrade(PL_bodytarget, SVt_PVFM);
3401 sv_setpvn(PL_bodytarget, "", 0);
3402 PL_formtarget = PL_bodytarget;
79072805 3403
bbce6d69 3404 TAINT;
155aba94 3405 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3406#ifdef MACOS_TRADITIONAL
3407 /* $0 is not majick on a Mac */
3408 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3409#else
3280af22 3410 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3411 magicname("0", "0", 1);
bf4acbe4 3412#endif
79072805 3413 }
155aba94 3414 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3415#ifdef OS2
23da6c43 3416 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3417#else
3280af22 3418 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3419#endif
155aba94 3420 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3421 GvMULTI_on(PL_argvgv);
3422 (void)gv_AVadd(PL_argvgv);
3423 av_clear(GvAVn(PL_argvgv));
79072805 3424 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3425 SV *sv = newSVpv(argv[0],0);
3426 av_push(GvAVn(PL_argvgv),sv);
3427 if (PL_widesyscalls)
e84ff256 3428 (void)sv_utf8_decode(sv);
79072805
LW		 3429 }
3430 }
155aba94 3431 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3432 HV *hv;
3280af22
NIS		 3433 GvMULTI_on(PL_envgv);
3434 hv = GvHVn(PL_envgv);
14befaf4 3435 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3436#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3437 /* Note that if the supplied env parameter is actually a copy
3438 of the global environ then it may now point to free'd memory
3439 if the environment has been modified since. To avoid this
3440 problem we treat env==NULL as meaning 'use the default'
3441 */
3442 if (!env)
3443 env = environ;
5aabfad6 3444 if (env != environ)
79072805 3445 environ[0] = Nullch;
103a7189
JH		 3446#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3447 {
3448 char **env_base;
9041c2e3 3449 for (env_base = env; *env; env++)
103a7189
JH		 3450 dup_env_count++;
3451 if ((dup_env_base = (char **)
480bfd1e 3452 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3453 char **dup_env;
3454 for (env = env_base, dup_env = dup_env_base;
3455 *env;
480bfd1e
JH		 3456 env++, dup_env++) {
3457 /* With environ one needs to use safesysmalloc(). */
3458 *dup_env = safesysmalloc(strlen(*env) + 1);
3459 (void)strcpy(*dup_env, *env);
3460 }
103a7189
JH		 3461 *dup_env = Nullch;
3462 env = dup_env_base;
3463 } /* else what? */
3464 }
3465#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3466 if (env)
3467 for (; *env; env++) {
93a17b20