This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
https://perl5.git.perl.org / perl5.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Re: ActivePerl 628 + warnings + fork + exec = spurious "Can't exec"?
[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)
50dd6e57 61
50dd6e57 62/* this is called in parent before the fork() */
98e467d9
DM		 63void
64Perl_atfork_lock(void)
50dd6e57
GS		 65{
66 /* locks must be held in locking order (if any) */
67#ifdef MYMALLOC
68 MUTEX_LOCK(&PL_malloc_mutex);
69#endif
70 OP_REFCNT_LOCK;
71}
72
73/* this is called in both parent and child after the fork() */
98e467d9
DM		 74void
75Perl_atfork_unlock(void)
50dd6e57
GS		 76{
77 /* locks must be released in same order as in S_atfork_lock() */
78#ifdef MYMALLOC
79 MUTEX_UNLOCK(&PL_malloc_mutex);
80#endif
81 OP_REFCNT_UNLOCK;
82}
83
06d86050
GS		 84# define INIT_TLS_AND_INTERP \
85 STMT_START { \
86 if (!PL_curinterp) { \
87 PERL_SET_INTERP(my_perl); \
88 INIT_THREADS; \
89 ALLOC_THREAD_KEY; \
534825c4
GS		 90 PERL_SET_THX(my_perl); \
91 OP_REFCNT_INIT; \
92 } \
93 else { \
94 PERL_SET_THX(my_perl); \
06d86050 95 } \
06d86050
GS		 96 } STMT_END
97# else
98# define INIT_TLS_AND_INTERP \
99 STMT_START { \
100 if (!PL_curinterp) { \
101 PERL_SET_INTERP(my_perl); \
102 } \
103 PERL_SET_THX(my_perl); \
104 } STMT_END
105# endif
106#endif
107
32e30700
GS		 108#ifdef PERL_IMPLICIT_SYS
109PerlInterpreter *
7766f137
GS		 110perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
111 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 112 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
113 struct IPerlDir* ipD, struct IPerlSock* ipS,
114 struct IPerlProc* ipP)
115{
116 PerlInterpreter *my_perl;
7766f137
GS		 117#ifdef PERL_OBJECT
118 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
119 ipLIO, ipD, ipS, ipP);
06d86050 120 INIT_TLS_AND_INTERP;
7766f137 121#else
32e30700
GS		 122 /* New() needs interpreter, so call malloc() instead */
123 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 124 INIT_TLS_AND_INTERP;
32e30700
GS		 125 Zero(my_perl, 1, PerlInterpreter);
126 PL_Mem = ipM;
7766f137
GS		 127 PL_MemShared = ipMS;
128 PL_MemParse = ipMP;
32e30700
GS		 129 PL_Env = ipE;
130 PL_StdIO = ipStd;
131 PL_LIO = ipLIO;
132 PL_Dir = ipD;
133 PL_Sock = ipS;
134 PL_Proc = ipP;
7766f137
GS		 135#endif
136
32e30700
GS		 137 return my_perl;
138}
139#else
954c1994
GS		 140
141/*
142=for apidoc perl_alloc
143
144Allocates a new Perl interpreter. See L<perlembed>.
145
146=cut
147*/
148
93a17b20 149PerlInterpreter *
cea2e8a9 150perl_alloc(void)
79072805 151{
cea2e8a9 152 PerlInterpreter *my_perl;
79072805 153
54aff467 154 /* New() needs interpreter, so call malloc() instead */
e8ee3774 155 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 156
06d86050 157 INIT_TLS_AND_INTERP;
dedcbb81 158 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 159 return my_perl;
79072805 160}
32e30700 161#endif /* PERL_IMPLICIT_SYS */
79072805 162
954c1994
GS		 163/*
164=for apidoc perl_construct
165
166Initializes a new Perl interpreter. See L<perlembed>.
167
168=cut
169*/
170
79072805 171void
0cb96387 172perl_construct(pTHXx)
79072805 173{
a863c7d1 174#ifdef USE_THREADS
a863c7d1 175#ifndef FAKE_THREADS
e1f15930 176 struct perl_thread *thr = NULL;
a863c7d1
MB		 177#endif /* FAKE_THREADS */
178#endif /* USE_THREADS */
ba869deb 179
8990e307 180#ifdef MULTIPLICITY
54aff467 181 init_interp();
ac27b0f5 182 PL_perl_destruct_level = 1;
54aff467
GS		 183#else
184 if (PL_perl_destruct_level > 0)
185 init_interp();
186#endif
187
33f46ff6 188 /* Init the real globals (and main thread)? */
3280af22 189 if (!PL_linestr) {
1feb2720 190#ifdef USE_THREADS
533c011a 191 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 192 /*
193 * Safe to use basic SV functions from now on (though
194 * not things like mortals or tainting yet).
195 */
533c011a
NIS		 196 MUTEX_INIT(&PL_eval_mutex);
197 COND_INIT(&PL_eval_cond);
198 MUTEX_INIT(&PL_threads_mutex);
199 COND_INIT(&PL_nthreads_cond);
ba869deb 200# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 201 MUTEX_INIT(&PL_svref_mutex);
ba869deb 202# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 203
5ff3f7a4 204 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 205 MUTEX_INIT(&PL_sv_lock_mutex);
206 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 207
199100c8 208 thr = init_main_thread();
11343788
MB		 209#endif /* USE_THREADS */
210
14dd3ad8 211#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 212 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 213#endif
312caa8e 214
2aea9f8a
GS		 215 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
216
3280af22
NIS		 217 PL_linestr = NEWSV(65,79);
218 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 219
3280af22 220 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 221 /* set read-only and try to insure than we wont see REFCNT==0
222 very often */
223
3280af22
NIS		 224 SvREADONLY_on(&PL_sv_undef);
225 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 226
3280af22
NIS		 227 sv_setpv(&PL_sv_no,PL_No);
228 SvNV(&PL_sv_no);
229 SvREADONLY_on(&PL_sv_no);
230 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 231
3280af22
NIS		 232 sv_setpv(&PL_sv_yes,PL_Yes);
233 SvNV(&PL_sv_yes);
234 SvREADONLY_on(&PL_sv_yes);
235 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 236 }
79072805 237
76e3520e
GS		 238#ifdef PERL_OBJECT
239 /* TODO: */
6b88bc9c 240 /* PL_sighandlerp = sighandler; */
76e3520e 241#else
cea2e8a9 242 PL_sighandlerp = Perl_sighandler;
76e3520e 243#endif
3280af22 244 PL_pidstatus = newHV();
44a8e56a 245
79072805
LW		 246#ifdef MSDOS
247 /*
248 * There is no way we can refer to them from Perl so close them to save
249 * space. The other alternative would be to provide STDAUX and STDPRN
250 * filehandles.
251 */
2b96b0a5
JH		 252 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
253 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW		 254#endif
255 }
256
79cb57f6 257 PL_nrs = newSVpvn("\n", 1);
3280af22 258 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 259
cea2e8a9 260 init_stacks();
79072805 261
748a9306 262 init_ids();
3280af22 263 PL_lex_state = LEX_NOTPARSING;
a5f75d66 264
312caa8e 265 JMPENV_BOOTSTRAP;
f86702cc 266 STATUS_ALL_SUCCESS;
267
0672f40e 268 init_i18nl10n(1);
36477c24 269 SET_NUMERIC_STANDARD();
0b5b802d 270
a7cb1f99
GS		 271 {
272 U8 *s;
273 PL_patchlevel = NEWSV(0,4);
155aba94 274 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 275 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 276 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 277 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 278 /* Build version strings using "native" characters */
279 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
280 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
281 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 282 *s = '\0';
283 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
284 SvPOK_on(PL_patchlevel);
285 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
286 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 287#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 288 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 289#endif
a7cb1f99
GS		 290 ;
291 SvNOK_on(PL_patchlevel); /* dual valued */
292 SvUTF8_on(PL_patchlevel);
293 SvREADONLY_on(PL_patchlevel);
294 }
79072805 295
ab821d7f 296#if defined(LOCAL_PATCH_COUNT)
3280af22 297 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 298#endif
299
52853b95
GS		 300#ifdef HAVE_INTERP_INTERN
301 sys_intern_init();
302#endif
303
4b556e6c 304 PerlIO_init(); /* Hook to IO system */
760ac839 305
3280af22
NIS		 306 PL_fdpid = newAV(); /* for remembering popen pids by fd */
307 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 308 PL_errors = newSVpvn("",0);
1fcf4c12
AB		 309#ifdef USE_ITHREADS
310 PL_regex_padav = newAV();
311#endif
8990e307 312 ENTER;
79072805
LW		 313}
314
954c1994
GS		 315/*
316=for apidoc perl_destruct
317
318Shuts down a Perl interpreter. See L<perlembed>.
319
320=cut
321*/
322
79072805 323void
0cb96387 324perl_destruct(pTHXx)
79072805 325{
748a9306 326 int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 327 HV *hv;
1f2bfc8a 328#ifdef USE_THREADS
33f46ff6 329 Thread t;
cea2e8a9 330 dTHX;
1f2bfc8a 331#endif /* USE_THREADS */
8990e307 332
7766f137
GS		 333 /* wait for all pseudo-forked children to finish */
334 PERL_WAIT_FOR_CHILDREN;
335
11343788 336#ifdef USE_THREADS
0f15f207 337#ifndef FAKE_THREADS
8023c3ce
MB		 338 /* Pass 1 on any remaining threads: detach joinables, join zombies */
339 retry_cleanup:
533c011a 340 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 341 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 342 "perl_destruct: waiting for %d threads...\n",
533c011a 343 PL_nthreads - 1));
33f46ff6 344 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 345 MUTEX_LOCK(&t->mutex);
346 switch (ThrSTATE(t)) {
347 AV *av;
c7848ba1 348 case THRf_ZOMBIE:
bf49b057 349 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 350 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 351 ThrSETSTATE(t, THRf_DEAD);
352 MUTEX_UNLOCK(&t->mutex);
533c011a 353 PL_nthreads--;
8023c3ce
MB		 354 /*
355 * The SvREFCNT_dec below may take a long time (e.g. av
356 * may contain an object scalar whose destructor gets
357 * called) so we have to unlock threads_mutex and start
358 * all over again.
359 */
533c011a 360 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 361 JOIN(t, &av);
605e5515 362 SvREFCNT_dec((SV*)av);
bf49b057 363 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 364 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 365 goto retry_cleanup;
c7848ba1 366 case THRf_R_JOINABLE:
bf49b057 367 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 368 "perl_destruct: detaching thread %p\n", t));
369 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 370 /*
c7848ba1
MB		 371 * We unlock threads_mutex and t->mutex in the opposite order
372 * from which we locked them just so that DETACH won't
373 * deadlock if it panics. It's only a breach of good style
374 * not a bug since they are unlocks not locks.
375 */
533c011a 376 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 377 DETACH(t);
378 MUTEX_UNLOCK(&t->mutex);
8023c3ce 379 goto retry_cleanup;
c7848ba1 380 default:
bf49b057 381 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 382 "perl_destruct: ignoring %p (state %u)\n",
383 t, ThrSTATE(t)));
384 MUTEX_UNLOCK(&t->mutex);
c7848ba1 385 /* fall through and out */
33f46ff6
MB		 386 }
387 }
8023c3ce
MB		 388 /* We leave the above "Pass 1" loop with threads_mutex still locked */
389
390 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 391 while (PL_nthreads > 1)
11343788 392 {
bf49b057 393 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 394 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 395 PL_nthreads - 1));
396 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 397 }
398 /* At this point, we're the last thread */
533c011a 399 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 400 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 401 MUTEX_DESTROY(&PL_threads_mutex);
402 COND_DESTROY(&PL_nthreads_cond);
b57a092c 403 PL_nthreads--;
0f15f207 404#endif /* !defined(FAKE_THREADS) */
11343788
MB		 405#endif /* USE_THREADS */
406
3280af22 407 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 408#ifdef DEBUGGING
409 {
410 char *s;
155aba94 411 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 412 int i = atoi(s);
413 if (destruct_level < i)
414 destruct_level = i;
415 }
4633a7c4
LW		 416 }
417#endif
418
8990e307 419 LEAVE;
a0d0e21e
LW		 420 FREETMPS;
421
13621cfb 422
ff0cee69 423 /* We must account for everything. */
424
425 /* Destroy the main CV and syntax tree */
3280af22
NIS		 426 if (PL_main_root) {
427 PL_curpad = AvARRAY(PL_comppad);
428 op_free(PL_main_root);
429 PL_main_root = Nullop;
a0d0e21e 430 }
3280af22
NIS		 431 PL_curcop = &PL_compiling;
432 PL_main_start = Nullop;
433 SvREFCNT_dec(PL_main_cv);
434 PL_main_cv = Nullcv;
24d3c518 435 PL_dirty = TRUE;
ff0cee69 436
13621cfb
NIS		 437 /* Tell PerlIO we are about to tear things apart in case
438 we have layers which are using resources that should
439 be cleaned up now.
440 */
441
442 PerlIO_destruct(aTHX);
443
3280af22 444 if (PL_sv_objcount) {
a0d0e21e
LW		 445 /*
446 * Try to destruct global references. We do this first so that the
447 * destructors and destructees still exist. Some sv's might remain.
448 * Non-referenced objects are on their own.
449 */
a0d0e21e 450 sv_clean_objs();
8990e307
LW		 451 }
452
5cd24f17 453 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 454 SvREFCNT_dec(PL_warnhook);
455 PL_warnhook = Nullsv;
456 SvREFCNT_dec(PL_diehook);
457 PL_diehook = Nullsv;
5cd24f17 458
4b556e6c 459 /* call exit list functions */
3280af22 460 while (PL_exitlistlen-- > 0)
0cb96387 461 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 462
3280af22 463 Safefree(PL_exitlist);
4b556e6c 464
a0d0e21e 465 if (destruct_level == 0){
8990e307 466
a0d0e21e 467 DEBUG_P(debprofdump());
ac27b0f5 468
a0d0e21e
LW		 469 /* The exit() function will do everything that needs doing. */
470 return;
471 }
5dd60ef7 472
551a8b83
JH		 473 /* jettison our possibly duplicated environment */
474
475#ifdef USE_ENVIRON_ARRAY
476 if (environ != PL_origenviron) {
477 I32 i;
478
479 for (i = 0; environ[i]; i++)
4b420006
JH		 480 safesysfree(environ[i]);
481 /* Must use safesysfree() when working with environ. */
482 safesysfree(environ);
551a8b83
JH		 483
484 environ = PL_origenviron;
485 }
486#endif
487
5f05dabc 488 /* loosen bonds of global variables */
489
3280af22
NIS		 490 if(PL_rsfp) {
491 (void)PerlIO_close(PL_rsfp);
492 PL_rsfp = Nullfp;
8ebc5c01 493 }
494
495 /* Filters for program text */
3280af22
NIS		 496 SvREFCNT_dec(PL_rsfp_filters);
497 PL_rsfp_filters = Nullav;
8ebc5c01 498
499 /* switches */
3280af22
NIS		 500 PL_preprocess = FALSE;
501 PL_minus_n = FALSE;
502 PL_minus_p = FALSE;
503 PL_minus_l = FALSE;
504 PL_minus_a = FALSE;
505 PL_minus_F = FALSE;
506 PL_doswitches = FALSE;
599cee73 507 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 508 PL_doextract = FALSE;
509 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 510 PL_unsafe = FALSE;
511
512 Safefree(PL_inplace);
513 PL_inplace = Nullch;
a7cb1f99 514 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 515
516 if (PL_e_script) {
517 SvREFCNT_dec(PL_e_script);
518 PL_e_script = Nullsv;
8ebc5c01 519 }
520
521 /* magical thingies */
522
7889fe52
NIS		 523 SvREFCNT_dec(PL_ofs_sv); /* $, */
524 PL_ofs_sv = Nullsv;
5f05dabc 525
7889fe52
NIS		 526 SvREFCNT_dec(PL_ors_sv); /* $\ */
527 PL_ors_sv = Nullsv;
8ebc5c01 528
3280af22
NIS		 529 SvREFCNT_dec(PL_rs); /* $/ */
530 PL_rs = Nullsv;
dc92893f 531
3280af22
NIS		 532 SvREFCNT_dec(PL_nrs); /* $/ helper */
533 PL_nrs = Nullsv;
5f05dabc 534
d33b2eba
GS		 535 PL_multiline = 0; /* $* */
536 Safefree(PL_osname); /* $^O */
537 PL_osname = Nullch;
5f05dabc 538
3280af22
NIS		 539 SvREFCNT_dec(PL_statname);
540 PL_statname = Nullsv;
541 PL_statgv = Nullgv;
5f05dabc 542
8ebc5c01 543 /* defgv, aka *_ should be taken care of elsewhere */
544
8ebc5c01 545 /* clean up after study() */
3280af22
NIS		 546 SvREFCNT_dec(PL_lastscream);
547 PL_lastscream = Nullsv;
548 Safefree(PL_screamfirst);
549 PL_screamfirst = 0;
550 Safefree(PL_screamnext);
551 PL_screamnext = 0;
8ebc5c01 552
7d5ea4e7
GS		 553 /* float buffer */
554 Safefree(PL_efloatbuf);
555 PL_efloatbuf = Nullch;
556 PL_efloatsize = 0;
557
8ebc5c01 558 /* startup and shutdown function lists */
3280af22
NIS		 559 SvREFCNT_dec(PL_beginav);
560 SvREFCNT_dec(PL_endav);
7d30b5c4 561 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 562 SvREFCNT_dec(PL_initav);
563 PL_beginav = Nullav;
564 PL_endav = Nullav;
7d30b5c4 565 PL_checkav = Nullav;
3280af22 566 PL_initav = Nullav;
5618dfe8 567
8ebc5c01 568 /* shortcuts just get cleared */
3280af22 569 PL_envgv = Nullgv;
3280af22
NIS		 570 PL_incgv = Nullgv;
571 PL_hintgv = Nullgv;
572 PL_errgv = Nullgv;
573 PL_argvgv = Nullgv;
574 PL_argvoutgv = Nullgv;
575 PL_stdingv = Nullgv;
bf49b057 576 PL_stderrgv = Nullgv;
3280af22
NIS		 577 PL_last_in_gv = Nullgv;
578 PL_replgv = Nullgv;
5c831c24 579 PL_debstash = Nullhv;
8ebc5c01 580
581 /* reset so print() ends up where we expect */
582 setdefout(Nullgv);
5c831c24 583
7a1c5554
GS		 584 SvREFCNT_dec(PL_argvout_stack);
585 PL_argvout_stack = Nullav;
8ebc5c01 586
5c831c24
GS		 587 SvREFCNT_dec(PL_modglobal);
588 PL_modglobal = Nullhv;
589 SvREFCNT_dec(PL_preambleav);
590 PL_preambleav = Nullav;
591 SvREFCNT_dec(PL_subname);
592 PL_subname = Nullsv;
593 SvREFCNT_dec(PL_linestr);
594 PL_linestr = Nullsv;
595 SvREFCNT_dec(PL_pidstatus);
596 PL_pidstatus = Nullhv;
597 SvREFCNT_dec(PL_toptarget);
598 PL_toptarget = Nullsv;
599 SvREFCNT_dec(PL_bodytarget);
600 PL_bodytarget = Nullsv;
601 PL_formtarget = Nullsv;
602
d33b2eba 603 /* free locale stuff */
b9582b6a 604#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 605 Safefree(PL_collation_name);
606 PL_collation_name = Nullch;
b9582b6a 607#endif
d33b2eba 608
b9582b6a 609#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 610 Safefree(PL_numeric_name);
611 PL_numeric_name = Nullch;
a453c169 612 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 613#endif
d33b2eba 614
5c831c24
GS		 615 /* clear utf8 character classes */
616 SvREFCNT_dec(PL_utf8_alnum);
617 SvREFCNT_dec(PL_utf8_alnumc);
618 SvREFCNT_dec(PL_utf8_ascii);
619 SvREFCNT_dec(PL_utf8_alpha);
620 SvREFCNT_dec(PL_utf8_space);
621 SvREFCNT_dec(PL_utf8_cntrl);
622 SvREFCNT_dec(PL_utf8_graph);
623 SvREFCNT_dec(PL_utf8_digit);
624 SvREFCNT_dec(PL_utf8_upper);
625 SvREFCNT_dec(PL_utf8_lower);
626 SvREFCNT_dec(PL_utf8_print);
627 SvREFCNT_dec(PL_utf8_punct);
628 SvREFCNT_dec(PL_utf8_xdigit);
629 SvREFCNT_dec(PL_utf8_mark);
630 SvREFCNT_dec(PL_utf8_toupper);
631 SvREFCNT_dec(PL_utf8_tolower);
632 PL_utf8_alnum = Nullsv;
633 PL_utf8_alnumc = Nullsv;
634 PL_utf8_ascii = Nullsv;
635 PL_utf8_alpha = Nullsv;
636 PL_utf8_space = Nullsv;
637 PL_utf8_cntrl = Nullsv;
638 PL_utf8_graph = Nullsv;
639 PL_utf8_digit = Nullsv;
640 PL_utf8_upper = Nullsv;
641 PL_utf8_lower = Nullsv;
642 PL_utf8_print = Nullsv;
643 PL_utf8_punct = Nullsv;
644 PL_utf8_xdigit = Nullsv;
645 PL_utf8_mark = Nullsv;
646 PL_utf8_toupper = Nullsv;
647 PL_utf8_totitle = Nullsv;
648 PL_utf8_tolower = Nullsv;
649
971a9dd3
GS		 650 if (!specialWARN(PL_compiling.cop_warnings))
651 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 652 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 653 if (!specialCopIO(PL_compiling.cop_io))
654 SvREFCNT_dec(PL_compiling.cop_io);
655 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 656#ifdef USE_ITHREADS
657 Safefree(CopFILE(&PL_compiling));
658 CopFILE(&PL_compiling) = Nullch;
659 Safefree(CopSTASHPV(&PL_compiling));
660#else
01724ea0 661 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 662 CopFILEGV(&PL_compiling) = Nullgv;
663 /* cop_stash is not refcounted */
01724ea0 664#endif
5c831c24 665
a0d0e21e 666 /* Prepare to destruct main symbol table. */
5f05dabc 667
3280af22
NIS		 668 hv = PL_defstash;
669 PL_defstash = 0;
a0d0e21e 670 SvREFCNT_dec(hv);
5c831c24
GS		 671 SvREFCNT_dec(PL_curstname);
672 PL_curstname = Nullsv;
a0d0e21e 673
5a844595
GS		 674 /* clear queued errors */
675 SvREFCNT_dec(PL_errors);
676 PL_errors = Nullsv;
677
a0d0e21e 678 FREETMPS;
0453d815 679 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 680 if (PL_scopestack_ix != 0)
0453d815
PM		 681 Perl_warner(aTHX_ WARN_INTERNAL,
682 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 683 (long)PL_scopestack_ix);
684 if (PL_savestack_ix != 0)
0453d815
PM		 685 Perl_warner(aTHX_ WARN_INTERNAL,
686 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 687 (long)PL_savestack_ix);
688 if (PL_tmps_floor != -1)
0453d815 689 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 690 (long)PL_tmps_floor + 1);
a0d0e21e 691 if (cxstack_ix != -1)
0453d815 692 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 693 (long)cxstack_ix + 1);
a0d0e21e 694 }
8990e307
LW		 695
696 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 697 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 698 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 699
700 /* the 2 is for PL_fdpid and PL_strtab */
701 while (PL_sv_count > 2 && sv_clean_all())
702 ;
703
d33b2eba
GS		 704 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
705 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 706 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
707 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 708
d4777f27
GS		 709 AvREAL_off(PL_fdpid); /* no surviving entries */
710 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 711 PL_fdpid = Nullav;
712
6c644e78
GS		 713#ifdef HAVE_INTERP_INTERN
714 sys_intern_clear();
715#endif
716
6e72f9df 717 /* Destruct the global string table. */
718 {
719 /* Yell and reset the HeVAL() slots that are still holding refcounts,
720 * so that sv_free() won't fail on them.
721 */
722 I32 riter;
723 I32 max;
724 HE *hent;
725 HE **array;
726
727 riter = 0;
3280af22
NIS		 728 max = HvMAX(PL_strtab);
729 array = HvARRAY(PL_strtab);
6e72f9df 730 hent = array[0];
731 for (;;) {
0453d815
PM		 732 if (hent && ckWARN_d(WARN_INTERNAL)) {
733 Perl_warner(aTHX_ WARN_INTERNAL,
734 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 735 HeVAL(hent) - Nullsv, HeKEY(hent));
736 HeVAL(hent) = Nullsv;
737 hent = HeNEXT(hent);
738 }
739 if (!hent) {
740 if (++riter > max)
741 break;
742 hent = array[riter];
743 }
744 }
745 }
3280af22 746 SvREFCNT_dec(PL_strtab);
6e72f9df 747
e652bb2f 748#ifdef USE_ITHREADS
a0739874
DM		 749 /* free the pointer table used for cloning */
750 ptr_table_free(PL_ptr_table);
53186e96 751#endif
a0739874 752
d33b2eba
GS		 753 /* free special SVs */
754
755 SvREFCNT(&PL_sv_yes) = 0;
756 sv_clear(&PL_sv_yes);
757 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 758 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 759
760 SvREFCNT(&PL_sv_no) = 0;
761 sv_clear(&PL_sv_no);
762 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 763 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 764
765 SvREFCNT(&PL_sv_undef) = 0;
766 SvREADONLY_off(&PL_sv_undef);
d33b2eba 767
0453d815
PM		 768 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
769 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 770
3280af22 771 Safefree(PL_origfilename);
3280af22 772 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 773 if (PL_reg_curpm)
774 Safefree(PL_reg_curpm);
82ba1be6 775 Safefree(PL_reg_poscache);
3280af22
NIS		 776 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
777 Safefree(PL_op_mask);
cf36064f
GS		 778 Safefree(PL_psig_ptr);
779 Safefree(PL_psig_name);
2c2666fc 780 Safefree(PL_bitcount);
ce08f86c 781 Safefree(PL_psig_pend);
6e72f9df 782 nuke_stacks();
3280af22 783 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 784
a0d0e21e 785 DEBUG_P(debprofdump());
11343788 786#ifdef USE_THREADS
5f08fbcd 787 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 788 MUTEX_DESTROY(&PL_sv_mutex);
789 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 790 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 791 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 792 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 793#ifdef EMULATE_ATOMIC_REFCOUNTS
794 MUTEX_DESTROY(&PL_svref_mutex);
795#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 796
8023c3ce 797 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 798 Safefree(SvPVX(PL_thrsv));
799 Safefree(SvANY(PL_thrsv));
800 Safefree(PL_thrsv);
801 PL_thrsv = Nullsv;
8023c3ce 802#endif /* USE_THREADS */
d33b2eba 803
612f20c3
GS		 804 sv_free_arenas();
805
fc36a67e 806 /* As the absolutely last thing, free the non-arena SV for mess() */
807
3280af22 808 if (PL_mess_sv) {
9c63abab
GS		 809 /* it could have accumulated taint magic */
810 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
811 MAGIC* mg;
812 MAGIC* moremagic;
813 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
814 moremagic = mg->mg_moremagic;
14befaf4
DM		 815 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
816 && mg->mg_len >= 0)
9c63abab
GS		 817 Safefree(mg->mg_ptr);
818 Safefree(mg);
819 }
820 }
fc36a67e 821 /* we know that type >= SVt_PV */
155aba94 822 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 823 Safefree(SvPVX(PL_mess_sv));
824 Safefree(SvANY(PL_mess_sv));
825 Safefree(PL_mess_sv);
826 PL_mess_sv = Nullsv;
fc36a67e 827 }
79072805
LW		 828}
829
954c1994
GS		 830/*
831=for apidoc perl_free
832
833Releases a Perl interpreter. See L<perlembed>.
834
835=cut
836*/
837
79072805 838void
0cb96387 839perl_free(pTHXx)
79072805 840{
c5be433b 841#if defined(PERL_OBJECT)
7f0d82f7 842 PerlMem_free(this);
76e3520e 843#else
2986a63f 844# if defined(WIN32) || defined(NETWARE)
ce3e5b80 845# if defined(PERL_IMPLICIT_SYS)
2986a63f
JH		 846 #ifdef NETWARE
847 void *host = nw_internal_host;
848 #else
849 void *host = w32_internal_host;
850 #endif
851 #ifndef NETWARE
852 if (PerlProc_lasthost()) {
ce08f86c 853 PerlIO_cleanup();
2986a63f
JH		 854 }
855 #endif
7f0d82f7 856 PerlMem_free(aTHXx);
2986a63f
JH		 857 #ifdef NETWARE
858 nw5_delete_internal_host(host);
859 #else
860 win32_delete_internal_host(host);
861 #endif
ce3e5b80 862#else
ce08f86c 863 PerlIO_cleanup();
ce3e5b80
NIS		 864 PerlMem_free(aTHXx);
865#endif
1c0ca838
GS		 866# else
867 PerlMem_free(aTHXx);
868# endif
76e3520e 869#endif
79072805
LW		 870}
871
4b556e6c 872void
864dbfa3 873Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 874{
3280af22
NIS		 875 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
876 PL_exitlist[PL_exitlistlen].fn = fn;
877 PL_exitlist[PL_exitlistlen].ptr = ptr;
878 ++PL_exitlistlen;
4b556e6c
JD		 879}
880
954c1994
GS		 881/*
882=for apidoc perl_parse
883
884Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
885
886=cut
887*/
888
79072805 889int
0cb96387 890perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 891{
6224f72b 892 I32 oldscope;
6224f72b 893 int ret;
db36c5a1 894 dJMPENV;
cea2e8a9
GS		 895#ifdef USE_THREADS
896 dTHX;
897#endif
8d063cd8 898
a687059c
LW		 899#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
900#ifdef IAMSUID
901#undef IAMSUID
cea2e8a9 902 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 903setuid perl scripts securely.\n");
904#endif
905#endif
906
8f1f23e8 907#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 908 _dyld_lookup_and_bind
909 ("__environ", (unsigned long *) &environ_pointer, NULL);
910#endif /* environ */
911
3280af22
NIS		 912 PL_origargv = argv;
913 PL_origargc = argc;
fa6a1c44 914#ifdef USE_ENVIRON_ARRAY
3280af22 915 PL_origenviron = environ;
a0d0e21e
LW		 916#endif
917
3280af22 918 if (PL_do_undump) {
a0d0e21e
LW		 919
920 /* Come here if running an undumped a.out. */
921
3280af22
NIS		 922 PL_origfilename = savepv(argv[0]);
923 PL_do_undump = FALSE;
a0d0e21e 924 cxstack_ix = -1; /* start label stack again */
748a9306 925 init_ids();
a0d0e21e
LW		 926 init_postdump_symbols(argc,argv,env);
927 return 0;
928 }
929
3280af22
NIS		 930 if (PL_main_root) {
931 PL_curpad = AvARRAY(PL_comppad);
932 op_free(PL_main_root);
933 PL_main_root = Nullop;
ff0cee69 934 }
3280af22
NIS		 935 PL_main_start = Nullop;
936 SvREFCNT_dec(PL_main_cv);
937 PL_main_cv = Nullcv;
79072805 938
3280af22
NIS		 939 time(&PL_basetime);
940 oldscope = PL_scopestack_ix;
599cee73 941 PL_dowarn = G_WARN_OFF;
f86702cc 942
14dd3ad8
GS		 943#ifdef PERL_FLEXIBLE_EXCEPTIONS
944 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
945#else
946 JMPENV_PUSH(ret);
947#endif
6224f72b 948 switch (ret) {
312caa8e 949 case 0:
14dd3ad8
GS		 950#ifndef PERL_FLEXIBLE_EXCEPTIONS
951 parse_body(env,xsinit);
952#endif
7d30b5c4
GS		 953 if (PL_checkav)
954 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 955 ret = 0;
956 break;
6224f72b
GS		 957 case 1:
958 STATUS_ALL_FAILURE;
959 /* FALL THROUGH */
960 case 2:
961 /* my_exit() was called */
3280af22 962 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 963 LEAVE;
964 FREETMPS;
3280af22 965 PL_curstash = PL_defstash;
7d30b5c4
GS		 966 if (PL_checkav)
967 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 968 ret = STATUS_NATIVE_EXPORT;
969 break;
6224f72b 970 case 3:
bf49b057 971 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 972 ret = 1;
973 break;
6224f72b 974 }
14dd3ad8
GS		 975 JMPENV_POP;
976 return ret;
977}
978
979#ifdef PERL_FLEXIBLE_EXCEPTIONS
980STATIC void *
981S_vparse_body(pTHX_ va_list args)
982{
983 char **env = va_arg(args, char**);
984 XSINIT_t xsinit = va_arg(args, XSINIT_t);
985
986 return parse_body(env, xsinit);
312caa8e 987}
14dd3ad8 988#endif
312caa8e
CS		 989
990STATIC void *
14dd3ad8 991S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 992{
312caa8e
CS		 993 int argc = PL_origargc;
994 char **argv = PL_origargv;
312caa8e
CS		 995 char *scriptname = NULL;
996 int fdscript = -1;
997 VOL bool dosearch = FALSE;
998 char *validarg = "";
999 AV* comppadlist;
1000 register SV *sv;
1001 register char *s;
659ca9ea 1002 char *popts, *cddir = Nullch;
312caa8e 1003
3280af22 1004 sv_setpvn(PL_linestr,"",0);
79cb57f6 1005 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1006 SAVEFREESV(sv);
1007 init_main_stash();
54310121 1008
6224f72b
GS		 1009 for (argc--,argv++; argc > 0; argc--,argv++) {
1010 if (argv[0][0] != '-' || !argv[0][1])
1011 break;
1012#ifdef DOSUID
1013 if (*validarg)
1014 validarg = " PHOOEY ";
1015 else
1016 validarg = argv[0];
13281fa4 1017#endif
6224f72b
GS		 1018 s = argv[0]+1;
1019 reswitch:
1020 switch (*s) {
729a02f2
GS		 1021 case 'C':
1022#ifdef WIN32
c0932edc 1023 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1024 /* FALL THROUGH */
1025#endif
1d5472a9
GS		 1026#ifndef PERL_STRICT_CR
1027 case '\r':
1028#endif
6224f72b
GS		 1029 case ' ':
1030 case '0':
1031 case 'F':
1032 case 'a':
1033 case 'c':
1034 case 'd':
1035 case 'D':
1036 case 'h':
1037 case 'i':
1038 case 'l':
1039 case 'M':
1040 case 'm':
1041 case 'n':
1042 case 'p':
1043 case 's':
1044 case 'u':
1045 case 'U':
1046 case 'v':
599cee73
PM		 1047 case 'W':
1048 case 'X':
6224f72b 1049 case 'w':
155aba94 1050 if ((s = moreswitches(s)))
6224f72b
GS		 1051 goto reswitch;
1052 break;
33b78306 1053
6224f72b 1054 case 'T':
3280af22 1055 PL_tainting = TRUE;
6224f72b
GS		 1056 s++;
1057 goto reswitch;
f86702cc 1058
6224f72b 1059 case 'e':
bf4acbe4
GS		 1060#ifdef MACOS_TRADITIONAL
1061 /* ignore -e for Dev:Pseudo argument */
1062 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1063 break;
bf4acbe4 1064#endif
3280af22 1065 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1066 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1067 if (!PL_e_script) {
79cb57f6 1068 PL_e_script = newSVpvn("",0);
0cb96387 1069 filter_add(read_e_script, NULL);
6224f72b
GS		 1070 }
1071 if (*++s)
3280af22 1072 sv_catpv(PL_e_script, s);
6224f72b 1073 else if (argv[1]) {
3280af22 1074 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1075 argc--,argv++;
1076 }
1077 else
cea2e8a9 1078 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1079 sv_catpv(PL_e_script, "\n");
6224f72b 1080 break;
afe37c7d 1081
6224f72b
GS		 1082 case 'I': /* -I handled both here and in moreswitches() */
1083 forbid_setid("-I");
1084 if (!*++s && (s=argv[1]) != Nullch) {
1085 argc--,argv++;
1086 }
6224f72b 1087 if (s && *s) {
0df16ed7
GS		 1088 char *p;
1089 STRLEN len = strlen(s);
1090 p = savepvn(s, len);
9c8a64f0 1091 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1092 sv_catpvn(sv, "-I", 2);
1093 sv_catpvn(sv, p, len);
1094 sv_catpvn(sv, " ", 1);
6224f72b 1095 Safefree(p);
0df16ed7
GS		 1096 }
1097 else
a67e862a 1098 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1099 break;
1100 case 'P':
1101 forbid_setid("-P");
3280af22 1102 PL_preprocess = TRUE;
6224f72b
GS		 1103 s++;
1104 goto reswitch;
1105 case 'S':
1106 forbid_setid("-S");
1107 dosearch = TRUE;
1108 s++;
1109 goto reswitch;
1110 case 'V':
3280af22
NIS		 1111 if (!PL_preambleav)
1112 PL_preambleav = newAV();
1113 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1114 if (*++s != ':') {
3280af22 1115 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1116#ifdef VMS
6b88bc9c 1117 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1118#else
3280af22 1119 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1120#endif
3280af22 1121 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1122# ifdef DEBUGGING
3280af22 1123 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1124# endif
6224f72b 1125# ifdef MULTIPLICITY
8f872242 1126 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1127# endif
b363f7ed
GS		 1128# ifdef USE_THREADS
1129 sv_catpv(PL_Sv," USE_THREADS");
1130# endif
ac5e8965
JH		 1131# ifdef USE_ITHREADS
1132 sv_catpv(PL_Sv," USE_ITHREADS");
1133# endif
10cc9d2a
JH		 1134# ifdef USE_64_BIT_INT
1135 sv_catpv(PL_Sv," USE_64_BIT_INT");
1136# endif
1137# ifdef USE_64_BIT_ALL
1138 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1139# endif
1140# ifdef USE_LONG_DOUBLE
1141 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1142# endif
53430762
JH		 1143# ifdef USE_LARGE_FILES
1144 sv_catpv(PL_Sv," USE_LARGE_FILES");
1145# endif
ac5e8965
JH		 1146# ifdef USE_SOCKS
1147 sv_catpv(PL_Sv," USE_SOCKS");
1148# endif
b363f7ed
GS		 1149# ifdef PERL_OBJECT
1150 sv_catpv(PL_Sv," PERL_OBJECT");
1151# endif
1152# ifdef PERL_IMPLICIT_CONTEXT
1153 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1154# endif
1155# ifdef PERL_IMPLICIT_SYS
1156 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1157# endif
3280af22 1158 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1159
6224f72b
GS		 1160#if defined(LOCAL_PATCH_COUNT)
1161 if (LOCAL_PATCH_COUNT > 0) {
1162 int i;
3280af22 1163 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1164 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1165 if (PL_localpatches[i])
cea2e8a9 1166 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1167 }
1168 }
1169#endif
cea2e8a9 1170 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1171#ifdef __DATE__
1172# ifdef __TIME__
cea2e8a9 1173 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1174# else
cea2e8a9 1175 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1176# endif
1177#endif
3280af22 1178 sv_catpv(PL_Sv, "; \
6224f72b 1179$\"=\"\\n \"; \
69fcd688
JH		 1180@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1181#ifdef __CYGWIN__
1182 sv_catpv(PL_Sv,"\
1183push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1184#endif
1185 sv_catpv(PL_Sv, "\
6224f72b
GS		 1186print \" \\%ENV:\\n @env\\n\" if @env; \
1187print \" \\@INC:\\n @INC\\n\";");
1188 }
1189 else {
3280af22
NIS		 1190 PL_Sv = newSVpv("config_vars(qw(",0);
1191 sv_catpv(PL_Sv, ++s);
1192 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1193 s += strlen(s);
1194 }
3280af22 1195 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1196 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1197 goto reswitch;
1198 case 'x':
3280af22 1199 PL_doextract = TRUE;
6224f72b
GS		 1200 s++;
1201 if (*s)
f4c556ac 1202 cddir = s;
6224f72b
GS		 1203 break;
1204 case 0:
1205 break;
1206 case '-':
1207 if (!*++s || isSPACE(*s)) {
1208 argc--,argv++;
1209 goto switch_end;
1210 }
1211 /* catch use of gnu style long options */
1212 if (strEQ(s, "version")) {
1213 s = "v";
1214 goto reswitch;
1215 }
1216 if (strEQ(s, "help")) {
1217 s = "h";
1218 goto reswitch;
1219 }
1220 s--;
1221 /* FALL THROUGH */
1222 default:
cea2e8a9 1223 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1224 }
1225 }
6224f72b 1226 switch_end:
54310121 1227
f675dbe5
CB		 1228 if (
1229#ifndef SECURE_INTERNAL_GETENV
1230 !PL_tainting &&
1231#endif
659ca9ea 1232 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1233 {
659ca9ea 1234 s = savepv(popts);
74288ac8
GS		 1235 while (isSPACE(*s))
1236 s++;
1237 if (*s == '-' && *(s+1) == 'T')
1238 PL_tainting = TRUE;
1239 else {
1240 while (s && *s) {
4ea8f8fb 1241 char *d;
74288ac8
GS		 1242 while (isSPACE(*s))
1243 s++;
1244 if (*s == '-') {
1245 s++;
1246 if (isSPACE(*s))
1247 continue;
1248 }
4ea8f8fb 1249 d = s;
74288ac8
GS		 1250 if (!*s)
1251 break;
1252 if (!strchr("DIMUdmw", *s))
cea2e8a9 1253 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1254 while (++s && *s) {
1255 if (isSPACE(*s)) {
1256 *s++ = '\0';
1257 break;
1258 }
1259 }
1260 moreswitches(d);
6224f72b 1261 }
6224f72b
GS		 1262 }
1263 }
a0d0e21e 1264
6224f72b
GS		 1265 if (!scriptname)
1266 scriptname = argv[0];
3280af22 1267 if (PL_e_script) {
6224f72b
GS		 1268 argc++,argv--;
1269 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1270 }
1271 else if (scriptname == Nullch) {
1272#ifdef MSDOS
1273 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1274 moreswitches("h");
1275#endif
1276 scriptname = "-";
1277 }
1278
1279 init_perllib();
1280
1281 open_script(scriptname,dosearch,sv,&fdscript);
1282
1283 validate_suid(validarg, scriptname,fdscript);
1284
64ca3a65 1285#ifndef PERL_MICRO
0b5b802d
GS		 1286#if defined(SIGCHLD) || defined(SIGCLD)
1287 {
1288#ifndef SIGCHLD
1289# define SIGCHLD SIGCLD
1290#endif
1291 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1292 if (sigstate == SIG_IGN) {
1293 if (ckWARN(WARN_SIGNAL))
1294 Perl_warner(aTHX_ WARN_SIGNAL,
1295 "Can't ignore signal CHLD, forcing to default");
1296 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1297 }
1298 }
1299#endif
64ca3a65 1300#endif
0b5b802d 1301
bf4acbe4
GS		 1302#ifdef MACOS_TRADITIONAL
1303 if (PL_doextract || gMacPerl_AlwaysExtract) {
1304#else
f4c556ac 1305 if (PL_doextract) {
bf4acbe4 1306#endif
6224f72b 1307 find_beginning();
f4c556ac
GS		 1308 if (cddir && PerlDir_chdir(cddir) < 0)
1309 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1310
1311 }
6224f72b 1312
3280af22
NIS		 1313 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1314 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1315 CvUNIQUE_on(PL_compcv);
1316
1317 PL_comppad = newAV();
1318 av_push(PL_comppad, Nullsv);
1319 PL_curpad = AvARRAY(PL_comppad);
1320 PL_comppad_name = newAV();
1321 PL_comppad_name_fill = 0;
1322 PL_min_intro_pending = 0;
1323 PL_padix = 0;
6224f72b 1324#ifdef USE_THREADS
79cb57f6 1325 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1326 PL_curpad[0] = (SV*)newAV();
1327 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1328 CvOWNER(PL_compcv) = 0;
1329 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1330 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1331#endif /* USE_THREADS */
1332
1333 comppadlist = newAV();
1334 AvREAL_off(comppadlist);
3280af22
NIS		 1335 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1336 av_store(comppadlist, 1, (SV*)PL_comppad);
1337 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1338
0c4f7ff0 1339 boot_core_PerlIO();
6224f72b 1340 boot_core_UNIVERSAL();
9a34ef1d 1341#ifndef PERL_MICRO
09bef843 1342 boot_core_xsutils();
9a34ef1d 1343#endif
6224f72b
GS		 1344
1345 if (xsinit)
0cb96387 1346 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1347#ifndef PERL_MICRO
ed79a026 1348#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1349 init_os_extras();
6224f72b 1350#endif
64ca3a65 1351#endif
6224f72b 1352
29209bc5 1353#ifdef USE_SOCKS
1b9c9cf5
DH		 1354# ifdef HAS_SOCKS5_INIT
1355 socks5_init(argv[0]);
1356# else
29209bc5 1357 SOCKSinit(argv[0]);
1b9c9cf5 1358# endif
ac27b0f5 1359#endif
29209bc5 1360
6224f72b
GS		 1361 init_predump_symbols();
1362 /* init_postdump_symbols not currently designed to be called */
1363 /* more than once (ENV isn't cleared first, for example) */
1364 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1365 if (!PL_do_undump)
6224f72b
GS		 1366 init_postdump_symbols(argc,argv,env);
1367
1368 init_lexer();
1369
1370 /* now parse the script */
1371
1372 SETERRNO(0,SS$_NORMAL);
3280af22 1373 PL_error_count = 0;
bf4acbe4
GS		 1374#ifdef MACOS_TRADITIONAL
1375 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1376 if (PL_minus_c)
1377 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1378 else {
1379 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1380 MacPerl_MPWFileName(PL_origfilename));
1381 }
1382 }
1383#else
3280af22
NIS		 1384 if (yyparse() || PL_error_count) {
1385 if (PL_minus_c)
cea2e8a9 1386 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1387 else {
cea2e8a9 1388 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1389 PL_origfilename);
6224f72b
GS		 1390 }
1391 }
bf4acbe4 1392#endif
57843af0 1393 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1394 PL_curstash = PL_defstash;
1395 PL_preprocess = FALSE;
1396 if (PL_e_script) {
1397 SvREFCNT_dec(PL_e_script);
1398 PL_e_script = Nullsv;
6224f72b
GS		 1399 }
1400
1401 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1402 SvREFCNT_dec(PL_rs);
1403 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1404 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1405 if (PL_do_undump)
6224f72b
GS		 1406 my_unexec();
1407
57843af0
GS		 1408 if (isWARN_ONCE) {
1409 SAVECOPFILE(PL_curcop);
1410 SAVECOPLINE(PL_curcop);
3280af22 1411 gv_check(PL_defstash);
57843af0 1412 }
6224f72b
GS		 1413
1414 LEAVE;
1415 FREETMPS;
1416
1417#ifdef MYMALLOC
1418 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1419 dump_mstats("after compilation:");
1420#endif
1421
1422 ENTER;
3280af22 1423 PL_restartop = 0;
312caa8e 1424 return NULL;
6224f72b
GS		 1425}
1426
954c1994
GS		 1427/*
1428=for apidoc perl_run
1429
1430Tells a Perl interpreter to run. See L<perlembed>.
1431
1432=cut
1433*/
1434
6224f72b 1435int
0cb96387 1436perl_run(pTHXx)
6224f72b 1437{
6224f72b 1438 I32 oldscope;
14dd3ad8 1439 int ret = 0;
db36c5a1 1440 dJMPENV;
cea2e8a9
GS		 1441#ifdef USE_THREADS
1442 dTHX;
1443#endif
6224f72b 1444
3280af22 1445 oldscope = PL_scopestack_ix;
6224f72b 1446
14dd3ad8 1447#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1448 redo_body:
14dd3ad8
GS		 1449 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1450#else
1451 JMPENV_PUSH(ret);
1452#endif
6224f72b
GS		 1453 switch (ret) {
1454 case 1:
1455 cxstack_ix = -1; /* start context stack again */
312caa8e 1456 goto redo_body;
14dd3ad8
GS		 1457 case 0: /* normal completion */
1458#ifndef PERL_FLEXIBLE_EXCEPTIONS
1459 redo_body:
1460 run_body(oldscope);
1461#endif
1462 /* FALL THROUGH */
1463 case 2: /* my_exit() */
3280af22 1464 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1465 LEAVE;
1466 FREETMPS;
3280af22 1467 PL_curstash = PL_defstash;
865be832 1468 if (PL_endav && !PL_minus_c)
3280af22 1469 call_list(oldscope, PL_endav);
6224f72b
GS		 1470#ifdef MYMALLOC
1471 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1472 dump_mstats("after execution: ");
1473#endif
14dd3ad8
GS		 1474 ret = STATUS_NATIVE_EXPORT;
1475 break;
6224f72b 1476 case 3:
312caa8e
CS		 1477 if (PL_restartop) {
1478 POPSTACK_TO(PL_mainstack);
1479 goto redo_body;
6224f72b 1480 }
bf49b057 1481 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1482 FREETMPS;
14dd3ad8
GS		 1483 ret = 1;
1484 break;
6224f72b
GS		 1485 }
1486
14dd3ad8
GS		 1487 JMPENV_POP;
1488 return ret;
312caa8e
CS		 1489}
1490
14dd3ad8 1491#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1492STATIC void *
14dd3ad8 1493S_vrun_body(pTHX_ va_list args)
312caa8e 1494{
312caa8e
CS		 1495 I32 oldscope = va_arg(args, I32);
1496
14dd3ad8
GS		 1497 return run_body(oldscope);
1498}
1499#endif
1500
1501
1502STATIC void *
1503S_run_body(pTHX_ I32 oldscope)
1504{
6224f72b 1505 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1506 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1507
3280af22 1508 if (!PL_restartop) {
6224f72b
GS		 1509 DEBUG_x(dump_all());
1510 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1511 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1512 PTR2UV(thr)));
6224f72b 1513
3280af22 1514 if (PL_minus_c) {
bf4acbe4
GS		 1515#ifdef MACOS_TRADITIONAL
1516 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1517#else
bf49b057 1518 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1519#endif
6224f72b
GS		 1520 my_exit(0);
1521 }
3280af22 1522 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1523 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1524 if (PL_initav)
1525 call_list(oldscope, PL_initav);
6224f72b
GS		 1526 }
1527
1528 /* do it */
1529
3280af22 1530 if (PL_restartop) {
533c011a 1531 PL_op = PL_restartop;
3280af22 1532 PL_restartop = 0;
cea2e8a9 1533 CALLRUNOPS(aTHX);
6224f72b 1534 }
3280af22
NIS		 1535 else if (PL_main_start) {
1536 CvDEPTH(PL_main_cv) = 1;
533c011a 1537 PL_op = PL_main_start;
cea2e8a9 1538 CALLRUNOPS(aTHX);
6224f72b
GS		 1539 }
1540
f6b3007c
JH		 1541 my_exit(0);
1542 /* NOTREACHED */
312caa8e 1543 return NULL;
6224f72b
GS		 1544}
1545
954c1994
GS		 1546/*
1547=for apidoc p||get_sv
1548
1549Returns the SV of the specified Perl scalar. If C<create> is set and the
1550Perl variable does not exist then it will be created. If C<create> is not
1551set and the variable does not exist then NULL is returned.
1552
1553=cut
1554*/
1555
6224f72b 1556SV*
864dbfa3 1557Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1558{
1559 GV *gv;
1560#ifdef USE_THREADS
1561 if (name[1] == '\0' && !isALPHA(name[0])) {
1562 PADOFFSET tmp = find_threadsv(name);
411caa50 1563 if (tmp != NOT_IN_PAD)
6224f72b 1564 return THREADSV(tmp);
6224f72b
GS		 1565 }
1566#endif /* USE_THREADS */
1567 gv = gv_fetchpv(name, create, SVt_PV);
1568 if (gv)
1569 return GvSV(gv);
1570 return Nullsv;
1571}
1572
954c1994
GS		 1573/*
1574=for apidoc p||get_av
1575
1576Returns the AV of the specified Perl array. If C<create> is set and the
1577Perl variable does not exist then it will be created. If C<create> is not
1578set and the variable does not exist then NULL is returned.
1579
1580=cut
1581*/
1582
6224f72b 1583AV*
864dbfa3 1584Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1585{
1586 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1587 if (create)
1588 return GvAVn(gv);
1589 if (gv)
1590 return GvAV(gv);
1591 return Nullav;
1592}
1593
954c1994
GS		 1594/*
1595=for apidoc p||get_hv
1596
1597Returns the HV of the specified Perl hash. If C<create> is set and the
1598Perl variable does not exist then it will be created. If C<create> is not
1599set and the variable does not exist then NULL is returned.
1600
1601=cut
1602*/
1603
6224f72b 1604HV*
864dbfa3 1605Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1606{
a0d0e21e
LW		 1607 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1608 if (create)
1609 return GvHVn(gv);
1610 if (gv)
1611 return GvHV(gv);
1612 return Nullhv;
1613}
1614
954c1994
GS		 1615/*
1616=for apidoc p||get_cv
1617
1618Returns the CV of the specified Perl subroutine. If C<create> is set and
1619the Perl subroutine does not exist then it will be declared (which has the
1620same effect as saying C<sub name;>). If C<create> is not set and the
1621subroutine does not exist then NULL is returned.
1622
1623=cut
1624*/
1625
a0d0e21e 1626CV*
864dbfa3 1627Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1628{
1629 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1630 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1631 /* XXX this is probably not what they think they're getting.
1632 * It has the same effect as "sub name;", i.e. just a forward
1633 * declaration! */
8ebc5c01 1634 if (create && !GvCVu(gv))
774d564b 1635 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1636 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1637 Nullop,
a0d0e21e
LW		 1638 Nullop);
1639 if (gv)
8ebc5c01 1640 return GvCVu(gv);
a0d0e21e
LW		 1641 return Nullcv;
1642}
1643
79072805
LW		 1644/* Be sure to refetch the stack pointer after calling these routines. */
1645
954c1994
GS		 1646/*
1647=for apidoc p||call_argv
1648
1649Performs a callback to the specified Perl sub. See L<perlcall>.
1650
1651=cut
1652*/
1653
a0d0e21e 1654I32
864dbfa3 1655Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1656
8ac85365
NIS		 1657 /* See G_* flags in cop.h */
1658 /* null terminated arg list */
8990e307 1659{
a0d0e21e 1660 dSP;
8990e307 1661
924508f0 1662 PUSHMARK(SP);
a0d0e21e 1663 if (argv) {
8990e307 1664 while (*argv) {
a0d0e21e 1665 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1666 argv++;
1667 }
a0d0e21e 1668 PUTBACK;
8990e307 1669 }
864dbfa3 1670 return call_pv(sub_name, flags);
8990e307
LW		 1671}
1672
954c1994
GS		 1673/*
1674=for apidoc p||call_pv
1675
1676Performs a callback to the specified Perl sub. See L<perlcall>.
1677
1678=cut
1679*/
1680
a0d0e21e 1681I32
864dbfa3 1682Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1683 /* name of the subroutine */
1684 /* See G_* flags in cop.h */
a0d0e21e 1685{
864dbfa3 1686 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1687}
1688
954c1994
GS		 1689/*
1690=for apidoc p||call_method
1691
1692Performs a callback to the specified Perl method. The blessed object must
1693be on the stack. See L<perlcall>.
1694
1695=cut
1696*/
1697
a0d0e21e 1698I32
864dbfa3 1699Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1700 /* name of the subroutine */
1701 /* See G_* flags in cop.h */
a0d0e21e 1702{
968b3946 1703 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1704}
1705
1706/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1707/*
1708=for apidoc p||call_sv
1709
1710Performs a callback to the Perl sub whose name is in the SV. See
1711L<perlcall>.
1712
1713=cut
1714*/
1715
a0d0e21e 1716I32
864dbfa3 1717Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1718 /* See G_* flags in cop.h */
a0d0e21e 1719{
924508f0 1720 dSP;
a0d0e21e 1721 LOGOP myop; /* fake syntax tree node */
968b3946 1722 UNOP method_op;
aa689395 1723 I32 oldmark;
13689cfe 1724 volatile I32 retval = 0;
a0d0e21e 1725 I32 oldscope;
54310121 1726 bool oldcatch = CATCH_GET;
6224f72b 1727 int ret;
533c011a 1728 OP* oldop = PL_op;
db36c5a1 1729 dJMPENV;
1e422769 1730
a0d0e21e
LW		 1731 if (flags & G_DISCARD) {
1732 ENTER;
1733 SAVETMPS;
1734 }
1735
aa689395 1736 Zero(&myop, 1, LOGOP);
54310121 1737 myop.op_next = Nullop;
f51d4af5 1738 if (!(flags & G_NOARGS))
aa689395 1739 myop.op_flags |= OPf_STACKED;
54310121 1740 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1741 (flags & G_ARRAY) ? OPf_WANT_LIST :
1742 OPf_WANT_SCALAR);
462e5cf6 1743 SAVEOP();
533c011a 1744 PL_op = (OP*)&myop;
aa689395 1745
3280af22
NIS		 1746 EXTEND(PL_stack_sp, 1);
1747 *++PL_stack_sp = sv;
aa689395 1748 oldmark = TOPMARK;
3280af22 1749 oldscope = PL_scopestack_ix;
a0d0e21e 1750
3280af22 1751 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1752 /* Handle first BEGIN of -d. */
3280af22 1753 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1754 /* Try harder, since this may have been a sighandler, thus
1755 * curstash may be meaningless. */
3280af22 1756 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1757 && !(flags & G_NODEBUG))
533c011a 1758 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1759
968b3946
GS		 1760 if (flags & G_METHOD) {
1761 Zero(&method_op, 1, UNOP);
1762 method_op.op_next = PL_op;
1763 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1764 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1765 PL_op = (OP*)&method_op;
968b3946
GS		 1766 }
1767
312caa8e 1768 if (!(flags & G_EVAL)) {
0cdb2077 1769 CATCH_SET(TRUE);
14dd3ad8 1770 call_body((OP*)&myop, FALSE);
312caa8e 1771 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1772 CATCH_SET(oldcatch);
312caa8e
CS		 1773 }
1774 else {
d78bda3d 1775 myop.op_other = (OP*)&myop;
3280af22 1776 PL_markstack_ptr--;
4633a7c4
LW		 1777 /* we're trying to emulate pp_entertry() here */
1778 {
c09156bb 1779 register PERL_CONTEXT *cx;
54310121 1780 I32 gimme = GIMME_V;
ac27b0f5 1781
4633a7c4
LW		 1782 ENTER;
1783 SAVETMPS;
ac27b0f5 1784
968b3946 1785 push_return(Nullop);
1d76a5c3 1786 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1787 PUSHEVAL(cx, 0, 0);
533c011a 1788 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1789
faef0170 1790 PL_in_eval = EVAL_INEVAL;
4633a7c4 1791 if (flags & G_KEEPERR)
faef0170 1792 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1793 else
38a03e6e 1794 sv_setpv(ERRSV,"");
4633a7c4 1795 }
3280af22 1796 PL_markstack_ptr++;
a0d0e21e 1797
14dd3ad8
GS		 1798#ifdef PERL_FLEXIBLE_EXCEPTIONS
1799 redo_body:
1800 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1801 (OP*)&myop, FALSE);
14dd3ad8
GS		 1802#else
1803 JMPENV_PUSH(ret);
1804#endif
6224f72b
GS		 1805 switch (ret) {
1806 case 0:
14dd3ad8
GS		 1807#ifndef PERL_FLEXIBLE_EXCEPTIONS
1808 redo_body:
1809 call_body((OP*)&myop, FALSE);
1810#endif
312caa8e
CS		 1811 retval = PL_stack_sp - (PL_stack_base + oldmark);
1812 if (!(flags & G_KEEPERR))
1813 sv_setpv(ERRSV,"");
a0d0e21e 1814 break;
6224f72b 1815 case 1:
f86702cc 1816 STATUS_ALL_FAILURE;
a0d0e21e 1817 /* FALL THROUGH */
6224f72b 1818 case 2:
a0d0e21e 1819 /* my_exit() was called */
3280af22 1820 PL_curstash = PL_defstash;
a0d0e21e 1821 FREETMPS;
14dd3ad8 1822 JMPENV_POP;
cc3604b1 1823 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1824 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1825 my_exit_jump();
a0d0e21e 1826 /* NOTREACHED */
6224f72b 1827 case 3:
3280af22 1828 if (PL_restartop) {
533c011a 1829 PL_op = PL_restartop;
3280af22 1830 PL_restartop = 0;
312caa8e 1831 goto redo_body;
a0d0e21e 1832 }
3280af22 1833 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1834 if (flags & G_ARRAY)
1835 retval = 0;
1836 else {
1837 retval = 1;
3280af22 1838 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1839 }
312caa8e 1840 break;
a0d0e21e 1841 }
a0d0e21e 1842
3280af22 1843 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1844 SV **newsp;
1845 PMOP *newpm;
1846 I32 gimme;
c09156bb 1847 register PERL_CONTEXT *cx;
a0a2876f
LW		 1848 I32 optype;
1849
1850 POPBLOCK(cx,newpm);
1851 POPEVAL(cx);
1852 pop_return();
3280af22 1853 PL_curpm = newpm;
a0a2876f 1854 LEAVE;
a0d0e21e 1855 }
14dd3ad8 1856 JMPENV_POP;
a0d0e21e 1857 }
1e422769 1858
a0d0e21e 1859 if (flags & G_DISCARD) {
3280af22 1860 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1861 retval = 0;
1862 FREETMPS;
1863 LEAVE;
1864 }
533c011a 1865 PL_op = oldop;
a0d0e21e
LW		 1866 return retval;
1867}
1868
14dd3ad8 1869#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1870STATIC void *
14dd3ad8 1871S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1872{
1873 OP *myop = va_arg(args, OP*);
1874 int is_eval = va_arg(args, int);
1875
14dd3ad8 1876 call_body(myop, is_eval);
312caa8e
CS		 1877 return NULL;
1878}
14dd3ad8 1879#endif
312caa8e
CS		 1880
1881STATIC void
14dd3ad8 1882S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1883{
312caa8e
CS		 1884 if (PL_op == myop) {
1885 if (is_eval)
f807eda9 1886 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1887 else
f807eda9 1888 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1889 }
1890 if (PL_op)
cea2e8a9 1891 CALLRUNOPS(aTHX);
312caa8e
CS		 1892}
1893
6e72f9df 1894/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1895
954c1994
GS		 1896/*
1897=for apidoc p||eval_sv
1898
1899Tells Perl to C<eval> the string in the SV.
1900
1901=cut
1902*/
1903
a0d0e21e 1904I32
864dbfa3 1905Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1906
8ac85365 1907 /* See G_* flags in cop.h */
a0d0e21e 1908{
924508f0 1909 dSP;
a0d0e21e 1910 UNOP myop; /* fake syntax tree node */
8fa7f367 1911 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1912 volatile I32 retval = 0;
4633a7c4 1913 I32 oldscope;
6224f72b 1914 int ret;
533c011a 1915 OP* oldop = PL_op;
db36c5a1 1916 dJMPENV;
84902520 1917
4633a7c4
LW		 1918 if (flags & G_DISCARD) {
1919 ENTER;
1920 SAVETMPS;
1921 }
1922
462e5cf6 1923 SAVEOP();
533c011a
NIS		 1924 PL_op = (OP*)&myop;
1925 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1926 EXTEND(PL_stack_sp, 1);
1927 *++PL_stack_sp = sv;
1928 oldscope = PL_scopestack_ix;
79072805 1929
4633a7c4
LW		 1930 if (!(flags & G_NOARGS))
1931 myop.op_flags = OPf_STACKED;
79072805 1932 myop.op_next = Nullop;
6e72f9df 1933 myop.op_type = OP_ENTEREVAL;
54310121 1934 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1935 (flags & G_ARRAY) ? OPf_WANT_LIST :
1936 OPf_WANT_SCALAR);
6e72f9df 1937 if (flags & G_KEEPERR)
1938 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1939
14dd3ad8 1940#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1941 redo_body:
14dd3ad8 1942 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1943 (OP*)&myop, TRUE);
14dd3ad8
GS		 1944#else
1945 JMPENV_PUSH(ret);
1946#endif
6224f72b
GS		 1947 switch (ret) {
1948 case 0:
14dd3ad8
GS		 1949#ifndef PERL_FLEXIBLE_EXCEPTIONS
1950 redo_body:
1951 call_body((OP*)&myop,TRUE);
1952#endif
312caa8e
CS		 1953 retval = PL_stack_sp - (PL_stack_base + oldmark);
1954 if (!(flags & G_KEEPERR))
1955 sv_setpv(ERRSV,"");
4633a7c4 1956 break;
6224f72b 1957 case 1:
f86702cc 1958 STATUS_ALL_FAILURE;
4633a7c4 1959 /* FALL THROUGH */
6224f72b 1960 case 2:
4633a7c4 1961 /* my_exit() was called */
3280af22 1962 PL_curstash = PL_defstash;
4633a7c4 1963 FREETMPS;
14dd3ad8 1964 JMPENV_POP;
cc3604b1 1965 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1966 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1967 my_exit_jump();
4633a7c4 1968 /* NOTREACHED */
6224f72b 1969 case 3:
3280af22 1970 if (PL_restartop) {
533c011a 1971 PL_op = PL_restartop;
3280af22 1972 PL_restartop = 0;
312caa8e 1973 goto redo_body;
4633a7c4 1974 }
3280af22 1975 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1976 if (flags & G_ARRAY)
1977 retval = 0;
1978 else {
1979 retval = 1;
3280af22 1980 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1981 }
312caa8e 1982 break;
4633a7c4
LW		 1983 }
1984
14dd3ad8 1985 JMPENV_POP;
4633a7c4 1986 if (flags & G_DISCARD) {
3280af22 1987 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1988 retval = 0;
1989 FREETMPS;
1990 LEAVE;
1991 }
533c011a 1992 PL_op = oldop;
4633a7c4
LW		 1993 return retval;
1994}
1995
954c1994
GS		 1996/*
1997=for apidoc p||eval_pv
1998
1999Tells Perl to C<eval> the given string and return an SV* result.
2000
2001=cut
2002*/
2003
137443ea 2004SV*
864dbfa3 2005Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2006{
2007 dSP;
2008 SV* sv = newSVpv(p, 0);
2009
864dbfa3 2010 eval_sv(sv, G_SCALAR);
137443ea 2011 SvREFCNT_dec(sv);
2012
2013 SPAGAIN;
2014 sv = POPs;
2015 PUTBACK;
2016
2d8e6c8d
GS		 2017 if (croak_on_error && SvTRUE(ERRSV)) {
2018 STRLEN n_a;
cea2e8a9 2019 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2020 }
137443ea 2021
2022 return sv;
2023}
2024
4633a7c4
LW		 2025/* Require a module. */
2026
954c1994
GS		 2027/*
2028=for apidoc p||require_pv
2029
7d3fb230
BS		 2030Tells Perl to C<require> the file named by the string argument. It is
2031analogous to the Perl code C<eval "require '$file'">. It's even
2032implemented that way; consider using Perl_load_module instead.
954c1994 2033
7d3fb230 2034=cut */
954c1994 2035
4633a7c4 2036void
864dbfa3 2037Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2038{
d3acc0f7
JP		 2039 SV* sv;
2040 dSP;
e788e7d3 2041 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2042 PUTBACK;
2043 sv = sv_newmortal();
4633a7c4
LW		 2044 sv_setpv(sv, "require '");
2045 sv_catpv(sv, pv);
2046 sv_catpv(sv, "'");
864dbfa3 2047 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2048 SPAGAIN;
2049 POPSTACK;
79072805
LW		 2050}
2051
79072805 2052void
864dbfa3 2053Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2054{
2055 register GV *gv;
2056
155aba94 2057 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2058 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2059}
2060
76e3520e 2061STATIC void
cea2e8a9 2062S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2063{
ab821d7f 2064 /* This message really ought to be max 23 lines.
75c72d73 2065 * Removed -h because the user already knows that option. Others? */
fb73857a 2066
76e3520e 2067 static char *usage_msg[] = {
fb73857a 2068"-0[octal] specify record separator (\\0, if no argument)",
2069"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2070"-C enable native wide character system interfaces",
1950ee41 2071"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2072"-d[:debugger] run program under debugger",
2073"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2074"-e 'command' one line of program (several -e's allowed, omit programfile)",
2075"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2076"-i[extension] edit <> files in place (makes backup if extension supplied)",
2077"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2078"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2079"-[mM][-]module execute `use/no module...' before executing program",
2080"-n assume 'while (<>) { ... }' loop around program",
2081"-p assume loop like -n but print line also, like sed",
2082"-P run program through C preprocessor before compilation",
2083"-s enable rudimentary parsing for switches after programfile",
2084"-S look for programfile using PATH environment variable",
2085"-T enable tainting checks",
2086"-u dump core after parsing program",
fb73857a 2087"-U allow unsafe operations",
aac3bd0d
GS		 2088"-v print version, subversion (includes VERY IMPORTANT perl info)",
2089"-V[:variable] print configuration summary (or a single Config.pm variable)",
2090"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2091"-W enable all warnings",
2092"-X disable all warnings",
fb73857a 2093"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2094"\n",
2095NULL
2096};
76e3520e 2097 char **p = usage_msg;
fb73857a 2098
b0e47665
GS		 2099 PerlIO_printf(PerlIO_stdout(),
2100 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2101 name);
fb73857a 2102 while (*p)
b0e47665 2103 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2104}
2105
79072805
LW		 2106/* This routine handles any switches that can be given during run */
2107
2108char *
864dbfa3 2109Perl_moreswitches(pTHX_ char *s)
79072805 2110{
ba210ebe 2111 STRLEN numlen;
c07a80fd 2112 U32 rschar;
79072805
LW		 2113
2114 switch (*s) {
2115 case '0':
a863c7d1 2116 {
b21ed0a9 2117 numlen = 0; /* disallow underscores */
dff6d3cd 2118 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2119 SvREFCNT_dec(PL_nrs);
c07a80fd 2120 if (rschar & ~((U8)~0))
3280af22 2121 PL_nrs = &PL_sv_undef;
c07a80fd 2122 else if (!rschar && numlen >= 2)
79cb57f6 2123 PL_nrs = newSVpvn("", 0);
c07a80fd 2124 else {
2125 char ch = rschar;
79cb57f6 2126 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2127 }
2128 return s + numlen;
a863c7d1 2129 }
46487f74
GS		 2130 case 'C':
2131 PL_widesyscalls = TRUE;
2132 s++;
2133 return s;
2304df62 2134 case 'F':
3280af22
NIS		 2135 PL_minus_F = TRUE;
2136 PL_splitstr = savepv(s + 1);
2304df62
AD		 2137 s += strlen(s);
2138 return s;
79072805 2139 case 'a':
3280af22 2140 PL_minus_a = TRUE;
79072805
LW		 2141 s++;
2142 return s;
2143 case 'c':
3280af22 2144 PL_minus_c = TRUE;
79072805
LW		 2145 s++;
2146 return s;
2147 case 'd':
bbce6d69 2148 forbid_setid("-d");
4633a7c4 2149 s++;
70c94a19
RR		 2150 /* The following permits -d:Mod to accepts arguments following an =
2151 in the fashion that -MSome::Mod does. */
2152 if (*s == ':' || *s == '=') {
2153 char *start;
2154 SV *sv;
2155 sv = newSVpv("use Devel::", 0);
2156 start = ++s;
2157 /* We now allow -d:Module=Foo,Bar */
2158 while(isALNUM(*s) || *s==':') ++s;
2159 if (*s != '=')
2160 sv_catpv(sv, start);
2161 else {
2162 sv_catpvn(sv, start, s-start);
2163 sv_catpv(sv, " split(/,/,q{");
2164 sv_catpv(sv, ++s);
2165 sv_catpv(sv, "})");
2166 }
4633a7c4 2167 s += strlen(s);
70c94a19 2168 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2169 }
ed094faf 2170 if (!PL_perldb) {
3280af22 2171 PL_perldb = PERLDB_ALL;
a0d0e21e 2172 init_debugger();
ed094faf 2173 }
79072805
LW		 2174 return s;
2175 case 'D':
0453d815 2176 {
79072805 2177#ifdef DEBUGGING
bbce6d69 2178 forbid_setid("-D");
79072805 2179 if (isALPHA(s[1])) {
04932ac8
DM		 2180 /* if adding extra options, remember to update DEBUG_MASK */
2181 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2182 char *d;
2183
93a17b20 2184 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2185 PL_debug |= 1 << (d - debopts);
79072805
LW		 2186 }
2187 else {
3280af22 2188 PL_debug = atoi(s+1);
79072805
LW		 2189 for (s++; isDIGIT(*s); s++) ;
2190 }
aea4f609 2191 PL_debug |= DEBUG_TOP_FLAG;
79072805 2192#else
0453d815
PM		 2193 if (ckWARN_d(WARN_DEBUGGING))
2194 Perl_warner(aTHX_ WARN_DEBUGGING,
2195 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2196 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2197#endif
2198 /*SUPPRESS 530*/
2199 return s;
0453d815 2200 }
4633a7c4 2201 case 'h':
ac27b0f5 2202 usage(PL_origargv[0]);
6ad3d225 2203 PerlProc_exit(0);
79072805 2204 case 'i':
3280af22
NIS		 2205 if (PL_inplace)
2206 Safefree(PL_inplace);
2207 PL_inplace = savepv(s+1);
79072805 2208 /*SUPPRESS 530*/
3280af22 2209 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2210 if (*s) {
fb73857a 2211 *s++ = '\0';
7b8d334a
GS		 2212 if (*s == '-') /* Additional switches on #! line. */
2213 s++;
2214 }
fb73857a 2215 return s;
2216 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2217 forbid_setid("-I");
fb73857a 2218 ++s;
2219 while (*s && isSPACE(*s))
2220 ++s;
2221 if (*s) {
774d564b 2222 char *e, *p;
0df16ed7
GS		 2223 p = s;
2224 /* ignore trailing spaces (possibly followed by other switches) */
2225 do {
2226 for (e = p; *e && !isSPACE(*e); e++) ;
2227 p = e;
2228 while (isSPACE(*p))
2229 p++;
2230 } while (*p && *p != '-');
2231 e = savepvn(s, e-s);
9c8a64f0 2232 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2233 Safefree(e);
2234 s = p;
2235 if (*s == '-')
2236 s++;
79072805
LW		 2237 }
2238 else
a67e862a 2239 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2240 return s;
79072805 2241 case 'l':
3280af22 2242 PL_minus_l = TRUE;
79072805 2243 s++;
7889fe52
NIS		 2244 if (PL_ors_sv) {
2245 SvREFCNT_dec(PL_ors_sv);
2246 PL_ors_sv = Nullsv;
2247 }
79072805 2248 if (isDIGIT(*s)) {
7889fe52 2249 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2250 numlen = 0; /* disallow underscores */
7889fe52 2251 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2252 s += numlen;
2253 }
2254 else {
3280af22 2255 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2256 PL_ors_sv = newSVpvn("\n\n",2);
2257 }
2258 else {
2259 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2260 }
79072805
LW		 2261 }
2262 return s;
1a30305b 2263 case 'M':
bbce6d69 2264 forbid_setid("-M"); /* XXX ? */
1a30305b 2265 /* FALL THROUGH */
2266 case 'm':
bbce6d69 2267 forbid_setid("-m"); /* XXX ? */
1a30305b 2268 if (*++s) {
a5f75d66 2269 char *start;
11343788 2270 SV *sv;
a5f75d66
AD		 2271 char *use = "use ";
2272 /* -M-foo == 'no foo' */
2273 if (*s == '-') { use = "no "; ++s; }
11343788 2274 sv = newSVpv(use,0);
a5f75d66 2275 start = s;
1a30305b 2276 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2277 while(isALNUM(*s) || *s==':') ++s;
2278 if (*s != '=') {
11343788 2279 sv_catpv(sv, start);
c07a80fd 2280 if (*(start-1) == 'm') {
2281 if (*s != '\0')
cea2e8a9 2282 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2283 sv_catpv( sv, " ()");
c07a80fd 2284 }
2285 } else {
6df41af2 2286 if (s == start)
be98fb35
GS		 2287 Perl_croak(aTHX_ "Module name required with -%c option",
2288 s[-1]);
11343788
MB		 2289 sv_catpvn(sv, start, s-start);
2290 sv_catpv(sv, " split(/,/,q{");
2291 sv_catpv(sv, ++s);
2292 sv_catpv(sv, "})");
c07a80fd 2293 }
1a30305b 2294 s += strlen(s);
5c831c24 2295 if (!PL_preambleav)
3280af22
NIS		 2296 PL_preambleav = newAV();
2297 av_push(PL_preambleav, sv);
1a30305b 2298 }
2299 else
cea2e8a9 2300 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2301 return s;
79072805 2302 case 'n':
3280af22 2303 PL_minus_n = TRUE;
79072805
LW		 2304 s++;
2305 return s;
2306 case 'p':
3280af22 2307 PL_minus_p = TRUE;
79072805
LW		 2308 s++;
2309 return s;
2310 case 's':
bbce6d69 2311 forbid_setid("-s");
3280af22 2312 PL_doswitches = TRUE;
79072805
LW		 2313 s++;
2314 return s;
463ee0b2 2315 case 'T':
3280af22 2316 if (!PL_tainting)
cea2e8a9 2317 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2318 s++;
2319 return s;
79072805 2320 case 'u':
bf4acbe4
GS		 2321#ifdef MACOS_TRADITIONAL
2322 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2323#endif
3280af22 2324 PL_do_undump = TRUE;
79072805
LW		 2325 s++;
2326 return s;
2327 case 'U':
3280af22 2328 PL_unsafe = TRUE;
79072805
LW		 2329 s++;
2330 return s;
2331 case 'v':
8e9464f1 2332#if !defined(DGUX)
b0e47665 2333 PerlIO_printf(PerlIO_stdout(),
d2560b70 2334 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2335 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2336#else /* DGUX */
2337/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2338 PerlIO_printf(PerlIO_stdout(),
2339 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2340 PerlIO_printf(PerlIO_stdout(),
2341 Perl_form(aTHX_ " built under %s at %s %s\n",
2342 OSNAME, __DATE__, __TIME__));
2343 PerlIO_printf(PerlIO_stdout(),
2344 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2345 OSVERS));
8e9464f1
JH		 2346#endif /* !DGUX */
2347
fb73857a 2348#if defined(LOCAL_PATCH_COUNT)
2349 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2350 PerlIO_printf(PerlIO_stdout(),
2351 "\n(with %d registered patch%s, "
2352 "see perl -V for more detail)",
2353 (int)LOCAL_PATCH_COUNT,
2354 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2355#endif
1a30305b 2356
b0e47665 2357 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2358 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2359#ifdef MACOS_TRADITIONAL
2360 PerlIO_printf(PerlIO_stdout(),
084592ab 2361 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2362#endif
79072805 2363#ifdef MSDOS
b0e47665
GS		 2364 PerlIO_printf(PerlIO_stdout(),
2365 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2366#endif
2367#ifdef DJGPP
b0e47665
GS		 2368 PerlIO_printf(PerlIO_stdout(),
2369 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2370 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2371#endif
79072805 2372#ifdef OS2
b0e47665
GS		 2373 PerlIO_printf(PerlIO_stdout(),
2374 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2375 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2376#endif
79072805 2377#ifdef atarist
b0e47665
GS		 2378 PerlIO_printf(PerlIO_stdout(),
2379 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2380#endif
a3f9223b 2381#ifdef __BEOS__
b0e47665
GS		 2382 PerlIO_printf(PerlIO_stdout(),
2383 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2384#endif
1d84e8df 2385#ifdef MPE
b0e47665 2386 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2387 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2388#endif
9d116dd7 2389#ifdef OEMVS
b0e47665
GS		 2390 PerlIO_printf(PerlIO_stdout(),
2391 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2392#endif
495c5fdc 2393#ifdef __VOS__
b0e47665
GS		 2394 PerlIO_printf(PerlIO_stdout(),
2395 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2396#endif
092bebab 2397#ifdef __OPEN_VM
b0e47665
GS		 2398 PerlIO_printf(PerlIO_stdout(),
2399 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2400#endif
a1a0e61e 2401#ifdef POSIX_BC
b0e47665
GS		 2402 PerlIO_printf(PerlIO_stdout(),
2403 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2404#endif
61ae2fbf 2405#ifdef __MINT__
b0e47665
GS		 2406 PerlIO_printf(PerlIO_stdout(),
2407 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2408#endif
f83d2536 2409#ifdef EPOC
b0e47665
GS		 2410 PerlIO_printf(PerlIO_stdout(),
2411 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2412#endif
baed7233
DL		 2413#ifdef BINARY_BUILD_NOTICE
2414 BINARY_BUILD_NOTICE;
2415#endif
b0e47665
GS		 2416 PerlIO_printf(PerlIO_stdout(),
2417 "\n\
79072805 2418Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2419GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2420Complete documentation for Perl, including FAQ lists, should be found on\n\
2421this system using `man perl' or `perldoc perl'. If you have access to the\n\
2422Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2423 PerlProc_exit(0);
79072805 2424 case 'w':
599cee73 2425 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2426 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2427 s++;
2428 return s;
2429 case 'W':
ac27b0f5 2430 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2431 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2432 s++;
2433 return s;
2434 case 'X':
ac27b0f5 2435 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2436 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2437 s++;
2438 return s;
a0d0e21e 2439 case '*':
79072805
LW		 2440 case ' ':
2441 if (s[1] == '-') /* Additional switches on #! line. */
2442 return s+2;
2443 break;
a0d0e21e 2444 case '-':
79072805 2445 case 0:
51882d45 2446#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2447 case '\r':
2448#endif
79072805
LW		 2449 case '\n':
2450 case '\t':
2451 break;
aa689395 2452#ifdef ALTERNATE_SHEBANG
2453 case 'S': /* OS/2 needs -S on "extproc" line. */
2454 break;
2455#endif
a0d0e21e 2456 case 'P':
3280af22 2457 if (PL_preprocess)
a0d0e21e
LW		 2458 return s+1;
2459 /* FALL THROUGH */
79072805 2460 default:
cea2e8a9 2461 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2462 }
2463 return Nullch;
2464}
2465
2466/* compliments of Tom Christiansen */
2467
2468/* unexec() can be found in the Gnu emacs distribution */
ee580363 2469/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2470
2471void
864dbfa3 2472Perl_my_unexec(pTHX)
79072805
LW		 2473{
2474#ifdef UNEXEC
46fc3d4c 2475 SV* prog;
2476 SV* file;
ee580363 2477 int status = 1;
79072805
LW		 2478 extern int etext;
2479
ee580363 2480 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2481 sv_catpv(prog, "/perl");
6b88bc9c 2482 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2483 sv_catpv(file, ".perldump");
79072805 2484
ee580363
GS		 2485 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2486 /* unexec prints msg to stderr in case of failure */
6ad3d225 2487 PerlProc_exit(status);
79072805 2488#else
a5f75d66
AD		 2489# ifdef VMS
2490# include <lib$routines.h>
2491 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2492# else
79072805 2493 ABORT(); /* for use with undump */
aa689395 2494# endif
a5f75d66 2495#endif
79072805
LW		 2496}
2497
cb68f92d
GS		 2498/* initialize curinterp */
2499STATIC void
cea2e8a9 2500S_init_interp(pTHX)
cb68f92d
GS		 2501{
2502
066ef5b5 2503#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2504#define I_REINIT \
6b88bc9c
GS		 2505 STMT_START { \
2506 PL_chopset = " \n-"; \
2507 PL_copline = NOLINE; \
2508 PL_curcop = &PL_compiling;\
2509 PL_curcopdb = NULL; \
2510 PL_dbargs = 0; \
3967c732 2511 PL_dumpindent = 4; \
6b88bc9c
GS		 2512 PL_laststatval = -1; \
2513 PL_laststype = OP_STAT; \
2514 PL_maxscream = -1; \
2515 PL_maxsysfd = MAXSYSFD; \
2516 PL_statname = Nullsv; \
2517 PL_tmps_floor = -1; \
2518 PL_tmps_ix = -1; \
2519 PL_op_mask = NULL; \
6b88bc9c
GS		 2520 PL_laststatval = -1; \
2521 PL_laststype = OP_STAT; \
2522 PL_mess_sv = Nullsv; \
2523 PL_splitstr = " "; \
2524 PL_generation = 100; \
2525 PL_exitlist = NULL; \
2526 PL_exitlistlen = 0; \
2527 PL_regindent = 0; \
2528 PL_in_clean_objs = FALSE; \
2529 PL_in_clean_all = FALSE; \
2530 PL_profiledata = NULL; \
2531 PL_rsfp = Nullfp; \
2532 PL_rsfp_filters = Nullav; \
24d3c518 2533 PL_dirty = FALSE; \
cb68f92d 2534 } STMT_END
9666903d 2535 I_REINIT;
066ef5b5
GS		 2536#else
2537# ifdef MULTIPLICITY
2538# define PERLVAR(var,type)
51371543 2539# define PERLVARA(var,n,type)
cea2e8a9 2540# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2541# if defined(USE_THREADS)
2542# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2543# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2544# else /* !USE_THREADS */
2545# define PERLVARI(var,type,init) aTHX->var = init;
2546# define PERLVARIC(var,type,init) aTHX->var = init;
2547# endif /* USE_THREADS */
cea2e8a9 2548# else
c5be433b
GS		 2549# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2550# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2551# endif
066ef5b5
GS		 2552# include "intrpvar.h"
2553# ifndef USE_THREADS
2554# include "thrdvar.h"
2555# endif
2556# undef PERLVAR
51371543 2557# undef PERLVARA
066ef5b5
GS		 2558# undef PERLVARI
2559# undef PERLVARIC
3967c732 2560# else
066ef5b5 2561# define PERLVAR(var,type)
51371543 2562# define PERLVARA(var,n,type)
533c011a
NIS		 2563# define PERLVARI(var,type,init) PL_##var = init;
2564# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2565# include "intrpvar.h"
2566# ifndef USE_THREADS
2567# include "thrdvar.h"
2568# endif
2569# undef PERLVAR
51371543 2570# undef PERLVARA
066ef5b5
GS		 2571# undef PERLVARI
2572# undef PERLVARIC
2573# endif
cb68f92d
GS		 2574#endif
2575
cb68f92d
GS		 2576}
2577
76e3520e 2578STATIC void
cea2e8a9 2579S_init_main_stash(pTHX)
79072805 2580{
463ee0b2 2581 GV *gv;
6e72f9df 2582
2583 /* Note that strtab is a rather special HV. Assumptions are made
2584 about not iterating on it, and not adding tie magic to it.
2585 It is properly deallocated in perl_destruct() */
3280af22 2586 PL_strtab = newHV();
5f08fbcd
GS		 2587#ifdef USE_THREADS
2588 MUTEX_INIT(&PL_strtab_mutex);
2589#endif
3280af22
NIS		 2590 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2591 hv_ksplit(PL_strtab, 512);
ac27b0f5 2592
3280af22 2593 PL_curstash = PL_defstash = newHV();
79cb57f6 2594 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2595 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2596 SvREFCNT_dec(GvHV(gv));
3280af22 2597 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2598 SvREADONLY_on(gv);
3280af22
NIS		 2599 HvNAME(PL_defstash) = savepv("main");
2600 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2601 GvMULTI_on(PL_incgv);
2602 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2603 GvMULTI_on(PL_hintgv);
2604 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2605 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2606 GvMULTI_on(PL_errgv);
2607 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2608 GvMULTI_on(PL_replgv);
cea2e8a9 2609 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2610 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2611 sv_setpvn(ERRSV, "", 0);
3280af22 2612 PL_curstash = PL_defstash;
11faa288 2613 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2614 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2615 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2616 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2617 /* We must init $/ before switches are processed. */
864dbfa3 2618 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2619}
2620
76e3520e 2621STATIC void
cea2e8a9 2622S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2623{
6c4ab083 2624 *fdscript = -1;
79072805 2625
3280af22
NIS		 2626 if (PL_e_script) {
2627 PL_origfilename = savepv("-e");
96436eeb 2628 }
6c4ab083
GS		 2629 else {
2630 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2631 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2632
2633 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2634 char *s = scriptname + 8;
2635 *fdscript = atoi(s);
2636 while (isDIGIT(*s))
2637 s++;
2638 if (*s) {
2639 scriptname = savepv(s + 1);
3280af22
NIS		 2640 Safefree(PL_origfilename);
2641 PL_origfilename = scriptname;
6c4ab083
GS		 2642 }
2643 }
2644 }
2645
f4dd75d9
GS		 2646#ifdef USE_ITHREADS
2647 Safefree(CopFILE(PL_curcop));
2648#else
2649 SvREFCNT_dec(CopFILEGV(PL_curcop));
2650#endif
57843af0 2651 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2652 if (strEQ(PL_origfilename,"-"))
79072805 2653 scriptname = "";
01f988be 2654 if (*fdscript >= 0) {
3280af22 2655 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2656#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2657 if (PL_rsfp)
2658 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2659#endif
2660 }
3280af22 2661 else if (PL_preprocess) {
46fc3d4c 2662 char *cpp_cfg = CPPSTDIN;
79cb57f6 2663 SV *cpp = newSVpvn("",0);
46fc3d4c 2664 SV *cmd = NEWSV(0,0);
2665
2666 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2667 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2668 sv_catpv(cpp, cpp_cfg);
79072805 2669
0df16ed7 2670 sv_catpvn(sv, "-I", 2);
fed7345c 2671 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2672
14953ddc
MB		 2673 DEBUG_P(PerlIO_printf(Perl_debug_log,
2674 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2675 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2676#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2677 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2678sed %s -e \"/^[^#]/b\" \
2679 -e \"/^#[ ]*include[ ]/b\" \
2680 -e \"/^#[ ]*define[ ]/b\" \
2681 -e \"/^#[ ]*if[ ]/b\" \
2682 -e \"/^#[ ]*ifdef[ ]/b\" \
2683 -e \"/^#[ ]*ifndef[ ]/b\" \
2684 -e \"/^#[ ]*else/b\" \
2685 -e \"/^#[ ]*elif[ ]/b\" \
2686 -e \"/^#[ ]*undef[ ]/b\" \
2687 -e \"/^#[ ]*endif/b\" \
2688 -e \"s/^#.*//\" \
894356b3 2689 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2690 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2691#else
092bebab 2692# ifdef __OPEN_VM
cea2e8a9 2693 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2694%s %s -e '/^[^#]/b' \
2695 -e '/^#[ ]*include[ ]/b' \
2696 -e '/^#[ ]*define[ ]/b' \
2697 -e '/^#[ ]*if[ ]/b' \
2698 -e '/^#[ ]*ifdef[ ]/b' \
2699 -e '/^#[ ]*ifndef[ ]/b' \
2700 -e '/^#[ ]*else/b' \
2701 -e '/^#[ ]*elif[ ]/b' \
2702 -e '/^#[ ]*undef[ ]/b' \
2703 -e '/^#[ ]*endif/b' \
2704 -e 's/^[ ]*#.*//' \
894356b3 2705 %s | %"SVf" %"SVf" %s",
092bebab 2706# else
cea2e8a9 2707 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2708%s %s -e '/^[^#]/b' \
2709 -e '/^#[ ]*include[ ]/b' \
2710 -e '/^#[ ]*define[ ]/b' \
2711 -e '/^#[ ]*if[ ]/b' \
2712 -e '/^#[ ]*ifdef[ ]/b' \
2713 -e '/^#[ ]*ifndef[ ]/b' \
2714 -e '/^#[ ]*else/b' \
2715 -e '/^#[ ]*elif[ ]/b' \
2716 -e '/^#[ ]*undef[ ]/b' \
2717 -e '/^#[ ]*endif/b' \
2718 -e 's/^[ ]*#.*//' \
894356b3 2719 %s | %"SVf" -C %"SVf" %s",
092bebab 2720# endif
79072805
LW		 2721#ifdef LOC_SED
2722 LOC_SED,
2723#else
2724 "sed",
2725#endif
3280af22 2726 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2727#endif
46fc3d4c 2728 scriptname, cpp, sv, CPPMINUS);
3280af22 2729 PL_doextract = FALSE;
79072805 2730#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2731 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2732#ifdef HAS_SETEUID
b28d0864 2733 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2734#else
2735#ifdef HAS_SETREUID
b28d0864 2736 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2737#else
2738#ifdef HAS_SETRESUID
b28d0864 2739 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2740#else
b28d0864 2741 PerlProc_setuid(PL_uid);
79072805
LW		 2742#endif
2743#endif
85e6fe83 2744#endif
b28d0864 2745 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2746 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2747 }
2748#endif /* IAMSUID */
3280af22 2749 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2750 SvREFCNT_dec(cmd);
2751 SvREFCNT_dec(cpp);
79072805
LW		 2752 }
2753 else if (!*scriptname) {
bbce6d69 2754 forbid_setid("program input from stdin");
3280af22 2755 PL_rsfp = PerlIO_stdin();
79072805 2756 }
96436eeb 2757 else {
3280af22 2758 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2759#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2760 if (PL_rsfp)
2761 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2762#endif
2763 }
3280af22 2764 if (!PL_rsfp) {
13281fa4 2765#ifdef DOSUID
a687059c 2766#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2767 if (PL_euid &&
cc49e20b 2768 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2769 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2770 {
46fc3d4c 2771 /* try again */
a7cb1f99 2772 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2773 (int)PERL_REVISION, (int)PERL_VERSION,
2774 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2775 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2776 }
2777#endif
2778#endif
584d69ec
JH		 2779#ifdef IAMSUID
2780 errno = EPERM;
2781 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2782 Strerror(errno));
2783#else
cea2e8a9 2784 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2785 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2786#endif
13281fa4 2787 }
79072805 2788}
8d063cd8 2789
7b89560d
JH		 2790/* Mention
2791 * I_SYSSTATVFS HAS_FSTATVFS
2792 * I_SYSMOUNT
c890dc6c 2793 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2794 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2795 * here so that metaconfig picks them up. */
2796
104d25b7 2797#ifdef IAMSUID
864dbfa3 2798STATIC int
e688b231 2799S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2800{
0545a864
JH		 2801 int check_okay = 0; /* able to do all the required sys/libcalls */
2802 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2803/*
ad27e871 2804 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2805 * fstatvfs() is UNIX98.
0545a864 2806 * fstatfs() is 4.3 BSD.
ad27e871 2807 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2808 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2809 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2810 */
2811
6439433f
JH		 2812#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2813
2814# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2815 defined(HAS_FSTATVFS)
2816# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2817 struct statvfs stfs;
6439433f 2818
104d25b7
JH		 2819 check_okay = fstatvfs(fd, &stfs) == 0;
2820 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2821# endif /* fstatvfs */
ac27b0f5 2822
6439433f
JH		 2823# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2824 defined(PERL_MOUNT_NOSUID) && \
2825 defined(HAS_FSTATFS) && \
2826 defined(HAS_STRUCT_STATFS) && \
2827 defined(HAS_STRUCT_STATFS_F_FLAGS)
2828# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2829 struct statfs stfs;
6439433f 2830
104d25b7 2831 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2832 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2833# endif /* fstatfs */
2834
2835# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2836 defined(PERL_MOUNT_NOSUID) && \
2837 defined(HAS_FSTAT) && \
2838 defined(HAS_USTAT) && \
2839 defined(HAS_GETMNT) && \
2840 defined(HAS_STRUCT_FS_DATA) && \
2841 defined(NOSTAT_ONE)
2842# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2843 struct stat fdst;
6439433f 2844
0545a864 2845 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2846 struct ustat us;
2847 if (ustat(fdst.st_dev, &us) == 0) {
2848 struct fs_data fsd;
2849 /* NOSTAT_ONE here because we're not examining fields which
2850 * vary between that case and STAT_ONE. */
ad27e871 2851 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2852 size_t cmplen = sizeof(us.f_fname);
2853 if (sizeof(fsd.fd_req.path) < cmplen)
2854 cmplen = sizeof(fsd.fd_req.path);
2855 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2856 fdst.st_dev == fsd.fd_req.dev) {
2857 check_okay = 1;
2858 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2859 }
2860 }
2861 }
2862 }
0545a864 2863 }
6439433f
JH		 2864# endif /* fstat+ustat+getmnt */
2865
2866# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2867 defined(HAS_GETMNTENT) && \
2868 defined(HAS_HASMNTOPT) && \
2869 defined(MNTOPT_NOSUID)
2870# define FD_ON_NOSUID_CHECK_OKAY
2871 FILE *mtab = fopen("/etc/mtab", "r");
2872 struct mntent *entry;
2873 struct stat stb, fsb;
104d25b7
JH		 2874
2875 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2876 while (entry = getmntent(mtab)) {
2877 if (stat(entry->mnt_dir, &fsb) == 0
2878 && fsb.st_dev == stb.st_dev)
2879 {
2880 /* found the filesystem */
2881 check_okay = 1;
2882 if (hasmntopt(entry, MNTOPT_NOSUID))
2883 on_nosuid = 1;
2884 break;
2885 } /* A single fs may well fail its stat(). */
2886 }
104d25b7
JH		 2887 }
2888 if (mtab)
6439433f
JH		 2889 fclose(mtab);
2890# endif /* getmntent+hasmntopt */
0545a864 2891
ac27b0f5 2892 if (!check_okay)
0545a864 2893 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2894 return on_nosuid;
2895}
2896#endif /* IAMSUID */
2897
76e3520e 2898STATIC void
cea2e8a9 2899S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2900{
155aba94 2901#ifdef IAMSUID
96436eeb 2902 int which;
155aba94 2903#endif
96436eeb 2904
13281fa4
LW		 2905 /* do we need to emulate setuid on scripts? */
2906
2907 /* This code is for those BSD systems that have setuid #! scripts disabled
2908 * in the kernel because of a security problem. Merely defining DOSUID
2909 * in perl will not fix that problem, but if you have disabled setuid
2910 * scripts in the kernel, this will attempt to emulate setuid and setgid
2911 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2912 * root version must be called suidperl or sperlN.NNN. If regular perl
2913 * discovers that it has opened a setuid script, it calls suidperl with
2914 * the same argv that it had. If suidperl finds that the script it has
2915 * just opened is NOT setuid root, it sets the effective uid back to the
2916 * uid. We don't just make perl setuid root because that loses the
2917 * effective uid we had before invoking perl, if it was different from the
2918 * uid.
13281fa4
LW		 2919 *
2920 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2921 * be defined in suidperl only. suidperl must be setuid root. The
2922 * Configure script will set this up for you if you want it.
2923 */
a687059c 2924
13281fa4 2925#ifdef DOSUID
6e72f9df 2926 char *s, *s2;
a0d0e21e 2927
b28d0864 2928 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2929 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2930 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2931 I32 len;
2d8e6c8d 2932 STRLEN n_a;
13281fa4 2933
a687059c 2934#ifdef IAMSUID
fe14fcc3 2935#ifndef HAS_SETREUID
a687059c
LW		 2936 /* On this access check to make sure the directories are readable,
2937 * there is actually a small window that the user could use to make
2938 * filename point to an accessible directory. So there is a faint
2939 * chance that someone could execute a setuid script down in a
2940 * non-accessible directory. I don't know what to do about that.
2941 * But I don't think it's too important. The manual lies when
2942 * it says access() is useful in setuid programs.
2943 */
cc49e20b 2944 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2945 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2946#else
2947 /* If we can swap euid and uid, then we can determine access rights
2948 * with a simple stat of the file, and then compare device and
2949 * inode to make sure we did stat() on the same file we opened.
2950 * Then we just have to make sure he or she can execute it.
2951 */
2952 {
2953 struct stat tmpstatbuf;
2954
85e6fe83
LW		 2955 if (
2956#ifdef HAS_SETREUID
b28d0864 2957 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2958#else
2959# if HAS_SETRESUID
b28d0864 2960 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2961# endif
85e6fe83 2962#endif
b28d0864 2963 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2964 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2965 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2966 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2967#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2968 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2969 Perl_croak(aTHX_ "Permission denied");
104d25b7 2970#endif
b28d0864
NIS		 2971 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2972 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2973 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2974 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2975 }
85e6fe83
LW		 2976 if (
2977#ifdef HAS_SETREUID
b28d0864 2978 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2979#else
2980# if defined(HAS_SETRESUID)
b28d0864 2981 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2982# endif
85e6fe83 2983#endif
b28d0864 2984 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2985 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2986 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2987 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2988 }
fe14fcc3 2989#endif /* HAS_SETREUID */
a687059c
LW		 2990#endif /* IAMSUID */
2991
b28d0864 2992 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2993 Perl_croak(aTHX_ "Permission denied");
b28d0864 2994 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2995 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2996 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2997 CopLINE_inc(PL_curcop);
6b88bc9c 2998 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2999 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3000 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3001 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3002 if (*s == ' ') s++;
45d8adaa 3003 while (!isSPACE(*s)) s++;
2d8e6c8d 3004 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3005 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3006 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3007 Perl_croak(aTHX_ "Not a perl script");
a687059c 3008 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3009 /*
3010 * #! arg must be what we saw above. They can invoke it by
3011 * mentioning suidperl explicitly, but they may not add any strange
3012 * arguments beyond what #! says if they do invoke suidperl that way.
3013 */
3014 len = strlen(validarg);
3015 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3016 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3017 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3018
3019#ifndef IAMSUID
b28d0864
NIS		 3020 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3021 PL_euid == PL_statbuf.st_uid)
3022 if (!PL_do_undump)
cea2e8a9 3023 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3024FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3025#endif /* IAMSUID */
13281fa4 3026
b28d0864
NIS		 3027 if (PL_euid) { /* oops, we're not the setuid root perl */
3028 (void)PerlIO_close(PL_rsfp);
13281fa4 3029#ifndef IAMSUID
46fc3d4c 3030 /* try again */
a7cb1f99 3031 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3032 (int)PERL_REVISION, (int)PERL_VERSION,
3033 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3034#endif
cea2e8a9 3035 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3036 }
3037
b28d0864 3038 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3039#ifdef HAS_SETEGID
b28d0864 3040 (void)setegid(PL_statbuf.st_gid);
a687059c 3041#else
fe14fcc3 3042#ifdef HAS_SETREGID
b28d0864 3043 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3044#else
3045#ifdef HAS_SETRESGID
b28d0864 3046 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3047#else
b28d0864 3048 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3049#endif
3050#endif
85e6fe83 3051#endif
b28d0864 3052 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3053 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3054 }
b28d0864
NIS		 3055 if (PL_statbuf.st_mode & S_ISUID) {
3056 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3057#ifdef HAS_SETEUID
b28d0864 3058 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3059#else
fe14fcc3 3060#ifdef HAS_SETREUID
b28d0864 3061 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3062#else
3063#ifdef HAS_SETRESUID
b28d0864 3064 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3065#else
b28d0864 3066 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3067#endif
3068#endif
85e6fe83 3069#endif
b28d0864 3070 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3071 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3072 }
b28d0864 3073 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3074#ifdef HAS_SETEUID
b28d0864 3075 (void)seteuid((Uid_t)PL_uid);
a687059c 3076#else
fe14fcc3 3077#ifdef HAS_SETREUID
b28d0864 3078 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3079#else
85e6fe83 3080#ifdef HAS_SETRESUID
b28d0864 3081 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3082#else
b28d0864 3083 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3084#endif
a687059c
LW		 3085#endif
3086#endif
b28d0864 3087 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3088 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3089 }
748a9306 3090 init_ids();
b28d0864 3091 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3092 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3093 }
3094#ifdef IAMSUID
6b88bc9c 3095 else if (PL_preprocess)
cea2e8a9 3096 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3097 else if (fdscript >= 0)
cea2e8a9 3098 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3099 else
cea2e8a9 3100 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3101
3102 /* We absolutely must clear out any saved ids here, so we */
3103 /* exec the real perl, substituting fd script for scriptname. */
3104 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3105 PerlIO_rewind(PL_rsfp);
3106 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3107 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3108 if (!PL_origargv[which])
cea2e8a9
GS		 3109 Perl_croak(aTHX_ "Permission denied");
3110 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3111 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3112#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3113 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3114#endif
a7cb1f99 3115 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3116 (int)PERL_REVISION, (int)PERL_VERSION,
3117 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3118 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3119#endif /* IAMSUID */
a687059c 3120#else /* !DOSUID */
3280af22 3121 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3122#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3123 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3124 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3125 ||
b28d0864 3126 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3127 )
b28d0864 3128 if (!PL_do_undump)
cea2e8a9 3129 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3130FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3131#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3132 /* not set-id, must be wrapped */
a687059c 3133 }
13281fa4 3134#endif /* DOSUID */
79072805 3135}
13281fa4 3136
76e3520e 3137STATIC void
cea2e8a9 3138S_find_beginning(pTHX)
79072805 3139{
6e72f9df 3140 register char *s, *s2;
33b78306
LW		 3141
3142 /* skip forward in input to the real script? */
3143
bbce6d69 3144 forbid_setid("-x");
bf4acbe4 3145#ifdef MACOS_TRADITIONAL
084592ab 3146 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3147
bf4acbe4
GS		 3148 while (PL_doextract || gMacPerl_AlwaysExtract) {
3149 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3150 if (!gMacPerl_AlwaysExtract)
3151 Perl_croak(aTHX_ "No Perl script found in input\n");
3152
3153 if (PL_doextract) /* require explicit override ? */
3154 if (!OverrideExtract(PL_origfilename))
3155 Perl_croak(aTHX_ "User aborted script\n");
3156 else
3157 PL_doextract = FALSE;
3158
3159 /* Pater peccavi, file does not have #! */
3160 PerlIO_rewind(PL_rsfp);
ac27b0f5 3161
bf4acbe4
GS		 3162 break;
3163 }
3164#else
3280af22
NIS		 3165 while (PL_doextract) {
3166 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3167 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3168#endif
4f0c37ba
IZ		 3169 s2 = s;
3170 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3171 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3172 PL_doextract = FALSE;
6e72f9df 3173 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3174 s2 = s;
3175 while (*s == ' ' || *s == '\t') s++;
3176 if (*s++ == '-') {
3177 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3178 if (strnEQ(s2-4,"perl",4))
3179 /*SUPPRESS 530*/
155aba94
GS		 3180 while ((s = moreswitches(s)))
3181 ;
33b78306 3182 }
95e8664e
CN		 3183#ifdef MACOS_TRADITIONAL
3184 break;
3185#endif
83025b21
LW		 3186 }
3187 }
3188}
3189
afe37c7d 3190
76e3520e 3191STATIC void
cea2e8a9 3192S_init_ids(pTHX)
352d5a3a 3193{
d8eceb89
JH		 3194 PL_uid = PerlProc_getuid();
3195 PL_euid = PerlProc_geteuid();
3196 PL_gid = PerlProc_getgid();
3197 PL_egid = PerlProc_getegid();
748a9306 3198#ifdef VMS
b28d0864
NIS		 3199 PL_uid |= PL_gid << 16;
3200 PL_euid |= PL_egid << 16;
748a9306 3201#endif
3280af22 3202 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3203}
79072805 3204
76e3520e 3205STATIC void
cea2e8a9 3206S_forbid_setid(pTHX_ char *s)
bbce6d69 3207{
3280af22 3208 if (PL_euid != PL_uid)
cea2e8a9 3209 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3210 if (PL_egid != PL_gid)
cea2e8a9 3211 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3212}
3213
1ee4443e
IZ		 3214void
3215Perl_init_debugger(pTHX)
748a9306 3216{
1ee4443e
IZ		 3217 HV *ostash = PL_curstash;
3218
3280af22
NIS		 3219 PL_curstash = PL_debstash;
3220 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3221 AvREAL_off(PL_dbargs);
3222 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3223 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3224 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3225 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3226 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3227 sv_setiv(PL_DBsingle, 0);
3280af22 3228 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3229 sv_setiv(PL_DBtrace, 0);
3280af22 3230 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3231 sv_setiv(PL_DBsignal, 0);
1ee4443e 3232 PL_curstash = ostash;
352d5a3a
LW		 3233}
3234
2ce36478
SM		 3235#ifndef STRESS_REALLOC
3236#define REASONABLE(size) (size)
3237#else
3238#define REASONABLE(size) (1) /* unreasonable */
3239#endif
3240
11343788 3241void
cea2e8a9 3242Perl_init_stacks(pTHX)
79072805 3243{
e336de0d 3244 /* start with 128-item stack and 8K cxstack */
3280af22 3245 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3246 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3247 PL_curstackinfo->si_type = PERLSI_MAIN;
3248 PL_curstack = PL_curstackinfo->si_stack;
3249 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3250
3280af22
NIS		 3251 PL_stack_base = AvARRAY(PL_curstack);
3252 PL_stack_sp = PL_stack_base;
3253 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3254
3280af22
NIS		 3255 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3256 PL_tmps_floor = -1;
3257 PL_tmps_ix = -1;
3258 PL_tmps_max = REASONABLE(128);
8990e307 3259
3280af22
NIS		 3260 New(54,PL_markstack,REASONABLE(32),I32);
3261 PL_markstack_ptr = PL_markstack;
3262 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3263
ce2f7c3b 3264 SET_MARK_OFFSET;
e336de0d 3265
3280af22
NIS		 3266 New(54,PL_scopestack,REASONABLE(32),I32);
3267 PL_scopestack_ix = 0;
3268 PL_scopestack_max = REASONABLE(32);
79072805 3269
3280af22
NIS		 3270 New(54,PL_savestack,REASONABLE(128),ANY);
3271 PL_savestack_ix = 0;
3272 PL_savestack_max = REASONABLE(128);
79072805 3273
3280af22
NIS		 3274 New(54,PL_retstack,REASONABLE(16),OP*);
3275 PL_retstack_ix = 0;
3276 PL_retstack_max = REASONABLE(16);
378cc40b 3277}
33b78306 3278
2ce36478
SM		 3279#undef REASONABLE
3280
76e3520e 3281STATIC void
cea2e8a9 3282S_nuke_stacks(pTHX)
6e72f9df 3283{
3280af22
NIS		 3284 while (PL_curstackinfo->si_next)
3285 PL_curstackinfo = PL_curstackinfo->si_next;
3286 while (PL_curstackinfo) {
3287 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3288 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3289 Safefree(PL_curstackinfo->si_cxstack);
3290 Safefree(PL_curstackinfo);
3291 PL_curstackinfo = p;
e336de0d 3292 }
3280af22
NIS		 3293 Safefree(PL_tmps_stack);
3294 Safefree(PL_markstack);
3295 Safefree(PL_scopestack);
3296 Safefree(PL_savestack);
3297 Safefree(PL_retstack);
378cc40b 3298}
33b78306 3299
76e3520e 3300#ifndef PERL_OBJECT
760ac839 3301static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3302#endif
7aa04957 3303
76e3520e 3304STATIC void
cea2e8a9 3305S_init_lexer(pTHX)
8990e307 3306{
76e3520e
GS		 3307#ifdef PERL_OBJECT
3308 PerlIO *tmpfp;
3309#endif
3280af22
NIS		 3310 tmpfp = PL_rsfp;
3311 PL_rsfp = Nullfp;
3312 lex_start(PL_linestr);
3313 PL_rsfp = tmpfp;
79cb57f6 3314 PL_subname = newSVpvn("main",4);
8990e307
LW		 3315}
3316
76e3520e 3317STATIC void
cea2e8a9 3318S_init_predump_symbols(pTHX)
45d8adaa 3319{
93a17b20 3320 GV *tmpgv;
af8c498a 3321 IO *io;
79072805 3322
864dbfa3 3323 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3324 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3325 GvMULTI_on(PL_stdingv);
af8c498a 3326 io = GvIOp(PL_stdingv);
a04651f4 3327 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3328 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3329 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3330 GvMULTI_on(tmpgv);
af8c498a 3331 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3332
85e6fe83 3333 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3334 GvMULTI_on(tmpgv);
af8c498a 3335 io = GvIOp(tmpgv);
a04651f4 3336 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3337 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3338 setdefout(tmpgv);
adbc6bb1 3339 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3340 GvMULTI_on(tmpgv);
af8c498a 3341 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3342
bf49b057
GS		 3343 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3344 GvMULTI_on(PL_stderrgv);
3345 io = GvIOp(PL_stderrgv);
a04651f4 3346 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3347 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3348 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3349 GvMULTI_on(tmpgv);
af8c498a 3350 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3351
3280af22 3352 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3353
bf4acbe4
GS		 3354 if (PL_osname)
3355 Safefree(PL_osname);
3356 PL_osname = savepv(OSNAME);
79072805 3357}
33b78306 3358
76e3520e 3359STATIC void
cea2e8a9 3360S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3361{
79072805
LW		 3362 char *s;
3363 SV *sv;
3364 GV* tmpgv;
9cbac4c7 3365#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3366 char **dup_env_base = 0;
103a7189 3367 int dup_env_count = 0;
9cbac4c7 3368#endif
fe14fcc3 3369
79072805 3370 argc--,argv++; /* skip name of script */
3280af22 3371 if (PL_doswitches) {
79072805
LW		 3372 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3373 if (!argv[0][1])
3374 break;
379d538a 3375 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3376 argc--,argv++;
3377 break;
3378 }
155aba94 3379 if ((s = strchr(argv[0], '='))) {
79072805 3380 *s++ = '\0';
85e6fe83 3381 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3382 }
3383 else
85e6fe83 3384 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3385 }
79072805 3386 }
3280af22
NIS		 3387 PL_toptarget = NEWSV(0,0);
3388 sv_upgrade(PL_toptarget, SVt_PVFM);
3389 sv_setpvn(PL_toptarget, "", 0);
3390 PL_bodytarget = NEWSV(0,0);
3391 sv_upgrade(PL_bodytarget, SVt_PVFM);
3392 sv_setpvn(PL_bodytarget, "", 0);
3393 PL_formtarget = PL_bodytarget;
79072805 3394
bbce6d69 3395 TAINT;
155aba94 3396 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3397#ifdef MACOS_TRADITIONAL
3398 /* $0 is not majick on a Mac */
3399 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3400#else
3280af22 3401 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3402 magicname("0", "0", 1);
bf4acbe4 3403#endif
79072805 3404 }
155aba94 3405 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3406#ifdef OS2
23da6c43 3407 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3408#else
3280af22 3409 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3410#endif
155aba94 3411 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3412 GvMULTI_on(PL_argvgv);
3413 (void)gv_AVadd(PL_argvgv);
3414 av_clear(GvAVn(PL_argvgv));
79072805 3415 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3416 SV *sv = newSVpv(argv[0],0);
3417 av_push(GvAVn(PL_argvgv),sv);
3418 if (PL_widesyscalls)
e84ff256 3419 (void)sv_utf8_decode(sv);
79072805
LW		 3420 }
3421 }
155aba94 3422 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3423 HV *hv;
3280af22
NIS		 3424 GvMULTI_on(PL_envgv);
3425 hv = GvHVn(PL_envgv);
14befaf4 3426 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3427#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3428 /* Note that if the supplied env parameter is actually a copy
3429 of the global environ then it may now point to free'd memory
3430 if the environment has been modified since. To avoid this
3431 problem we treat env==NULL as meaning 'use the default'
3432 */
3433 if (!env)
3434 env = environ;
5aabfad6 3435 if (env != environ)
79072805 3436 environ[0] = Nullch;
103a7189
JH		 3437#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3438 {
3439 char **env_base;
9041c2e3 3440 for (env_base = env; *env; env++)
103a7189
JH		 3441 dup_env_count++;
3442 if ((dup_env_base = (char **)
480bfd1e 3443 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3444 char **dup_env;
3445 for (env = env_base, dup_env = dup_env_base;
3446 *env;
480bfd1e
JH		 3447 env++, dup_env++) {
3448 /* With environ one needs to use safesysmalloc(). */
3449 *dup_env = safesysmalloc(strlen(*env) + 1);
3450 (void)strcpy(*dup_env, *env);
3451 }
103a7189
JH		 3452 *dup_env = Nullch;
3453 env = dup_env_base;
3454 } /* else what? */
3455 }
3456#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
79072805 3457 for (; *env; env++) {
93a17b20 3458 if (!(s = strchr(*env,'=')))
79072805
LW		 3459 continue;
3460 *s++ = '\0';
60ce6247 3461#if defined(MSDOS)
137443ea 3462 (void)strupr(*env);
3463#endif
79072805
LW		 3464 sv = newSVpv(s--,0);