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Move the creation of PL_strtab to perl_construct so we can work
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
acfe0abc 28static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
4d1ff10f 42#if defined(USE_5005THREADS)
06d86050
GS		 43# define INIT_TLS_AND_INTERP \
44 STMT_START { \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
47 INIT_THREADS; \
48 ALLOC_THREAD_KEY; \
49 } \
50 } STMT_END
51#else
52# if defined(USE_ITHREADS)
53# define INIT_TLS_AND_INTERP \
54 STMT_START { \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
57 INIT_THREADS; \
58 ALLOC_THREAD_KEY; \
534825c4
GS		 59 PERL_SET_THX(my_perl); \
60 OP_REFCNT_INIT; \
61 } \
62 else { \
63 PERL_SET_THX(my_perl); \
06d86050 64 } \
06d86050
GS		 65 } STMT_END
66# else
67# define INIT_TLS_AND_INTERP \
68 STMT_START { \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
71 } \
72 PERL_SET_THX(my_perl); \
73 } STMT_END
74# endif
75#endif
76
32e30700
GS		 77#ifdef PERL_IMPLICIT_SYS
78PerlInterpreter *
7766f137
GS		 79perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
84{
85 PerlInterpreter *my_perl;
32e30700
GS		 86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 88 INIT_TLS_AND_INTERP;
32e30700
GS		 89 Zero(my_perl, 1, PerlInterpreter);
90 PL_Mem = ipM;
7766f137
GS		 91 PL_MemShared = ipMS;
92 PL_MemParse = ipMP;
32e30700
GS		 93 PL_Env = ipE;
94 PL_StdIO = ipStd;
95 PL_LIO = ipLIO;
96 PL_Dir = ipD;
97 PL_Sock = ipS;
98 PL_Proc = ipP;
7766f137 99
32e30700
GS		 100 return my_perl;
101}
102#else
954c1994
GS		 103
104/*
105=for apidoc perl_alloc
106
107Allocates a new Perl interpreter. See L<perlembed>.
108
109=cut
110*/
111
93a17b20 112PerlInterpreter *
cea2e8a9 113perl_alloc(void)
79072805 114{
cea2e8a9 115 PerlInterpreter *my_perl;
79072805 116
54aff467 117 /* New() needs interpreter, so call malloc() instead */
e8ee3774 118 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 119
06d86050 120 INIT_TLS_AND_INTERP;
dedcbb81 121 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 122 return my_perl;
79072805 123}
32e30700 124#endif /* PERL_IMPLICIT_SYS */
79072805 125
954c1994
GS		 126/*
127=for apidoc perl_construct
128
129Initializes a new Perl interpreter. See L<perlembed>.
130
131=cut
132*/
133
79072805 134void
0cb96387 135perl_construct(pTHXx)
79072805 136{
4d1ff10f 137#ifdef USE_5005THREADS
a863c7d1 138#ifndef FAKE_THREADS
e1f15930 139 struct perl_thread *thr = NULL;
a863c7d1 140#endif /* FAKE_THREADS */
4d1ff10f 141#endif /* USE_5005THREADS */
ba869deb 142
8990e307 143#ifdef MULTIPLICITY
54aff467 144 init_interp();
ac27b0f5 145 PL_perl_destruct_level = 1;
54aff467
GS		 146#else
147 if (PL_perl_destruct_level > 0)
148 init_interp();
149#endif
150
33f46ff6 151 /* Init the real globals (and main thread)? */
3280af22 152 if (!PL_linestr) {
4d1ff10f 153#ifdef USE_5005THREADS
533c011a 154 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 155 /*
156 * Safe to use basic SV functions from now on (though
157 * not things like mortals or tainting yet).
158 */
533c011a
NIS		 159 MUTEX_INIT(&PL_eval_mutex);
160 COND_INIT(&PL_eval_cond);
161 MUTEX_INIT(&PL_threads_mutex);
162 COND_INIT(&PL_nthreads_cond);
ba869deb 163# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 164 MUTEX_INIT(&PL_svref_mutex);
ba869deb 165# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 166
5ff3f7a4 167 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 168 MUTEX_INIT(&PL_sv_lock_mutex);
169 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 170
199100c8 171 thr = init_main_thread();
4d1ff10f 172#endif /* USE_5005THREADS */
11343788 173
14dd3ad8 174#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 175 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 176#endif
312caa8e 177
2aea9f8a
GS		 178 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
179
3280af22
NIS		 180 PL_linestr = NEWSV(65,79);
181 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 182
3280af22 183 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 184 /* set read-only and try to insure than we wont see REFCNT==0
185 very often */
186
3280af22
NIS		 187 SvREADONLY_on(&PL_sv_undef);
188 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 189
3280af22
NIS		 190 sv_setpv(&PL_sv_no,PL_No);
191 SvNV(&PL_sv_no);
192 SvREADONLY_on(&PL_sv_no);
193 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 194
3280af22
NIS		 195 sv_setpv(&PL_sv_yes,PL_Yes);
196 SvNV(&PL_sv_yes);
197 SvREADONLY_on(&PL_sv_yes);
198 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 199 }
79072805 200
cea2e8a9 201 PL_sighandlerp = Perl_sighandler;
3280af22 202 PL_pidstatus = newHV();
44a8e56a 203
79072805
LW		 204#ifdef MSDOS
205 /*
206 * There is no way we can refer to them from Perl so close them to save
207 * space. The other alternative would be to provide STDAUX and STDPRN
208 * filehandles.
209 */
2b96b0a5
JH		 210 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
211 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW		 212#endif
213 }
214
8bfdd7d9 215 PL_rs = newSVpvn("\n", 1);
dc92893f 216
cea2e8a9 217 init_stacks();
79072805 218
748a9306 219 init_ids();
3280af22 220 PL_lex_state = LEX_NOTPARSING;
a5f75d66 221
312caa8e 222 JMPENV_BOOTSTRAP;
f86702cc 223 STATUS_ALL_SUCCESS;
224
0672f40e 225 init_i18nl10n(1);
36477c24 226 SET_NUMERIC_STANDARD();
0b5b802d 227
a7cb1f99
GS		 228 {
229 U8 *s;
230 PL_patchlevel = NEWSV(0,4);
155aba94 231 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 232 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 233 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 234 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 235 /* Build version strings using "native" characters */
236 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
237 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
238 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 239 *s = '\0';
240 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
241 SvPOK_on(PL_patchlevel);
242 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
243 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 244#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 245 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 246#endif
a7cb1f99
GS		 247 ;
248 SvNOK_on(PL_patchlevel); /* dual valued */
249 SvUTF8_on(PL_patchlevel);
250 SvREADONLY_on(PL_patchlevel);
251 }
79072805 252
ab821d7f 253#if defined(LOCAL_PATCH_COUNT)
3280af22 254 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 255#endif
256
52853b95
GS		 257#ifdef HAVE_INTERP_INTERN
258 sys_intern_init();
259#endif
260
4b556e6c 261 PerlIO_init(); /* Hook to IO system */
760ac839 262
3280af22
NIS		 263 PL_fdpid = newAV(); /* for remembering popen pids by fd */
264 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 265 PL_errors = newSVpvn("",0);
1fcf4c12 266#ifdef USE_ITHREADS
13137afc
AB		 267 PL_regex_padav = newAV();
268 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
269 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 270#endif
e5dd39fc
AB		 271#ifdef USE_REENTRANT_API
272 New(31337, PL_reentrant_buffer,1, REBUF);
273 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
274#endif
3d47000e
AB		 275
276 /* Note that strtab is a rather special HV. Assumptions are made
277 about not iterating on it, and not adding tie magic to it.
278 It is properly deallocated in perl_destruct() */
279 PL_strtab = newHV();
280
281#ifdef USE_5005THREADS
282 MUTEX_INIT(&PL_strtab_mutex);
283#endif
284 HvSHAREKEYS_off(PL_strtab); /* mandatory */
285 hv_ksplit(PL_strtab, 512);
286
8990e307 287 ENTER;
79072805
LW		 288}
289
954c1994
GS		 290/*
291=for apidoc perl_destruct
292
293Shuts down a Perl interpreter. See L<perlembed>.
294
295=cut
296*/
297
31d77e54 298int
0cb96387 299perl_destruct(pTHXx)
79072805 300{
7c474504 301 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 302 HV *hv;
4d1ff10f 303#ifdef USE_5005THREADS
33f46ff6 304 Thread t;
cea2e8a9 305 dTHX;
4d1ff10f 306#endif /* USE_5005THREADS */
8990e307 307
7766f137
GS		 308 /* wait for all pseudo-forked children to finish */
309 PERL_WAIT_FOR_CHILDREN;
310
4d1ff10f 311#ifdef USE_5005THREADS
0f15f207 312#ifndef FAKE_THREADS
8023c3ce
MB		 313 /* Pass 1 on any remaining threads: detach joinables, join zombies */
314 retry_cleanup:
533c011a 315 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 316 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 317 "perl_destruct: waiting for %d threads...\n",
533c011a 318 PL_nthreads - 1));
33f46ff6 319 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 320 MUTEX_LOCK(&t->mutex);
321 switch (ThrSTATE(t)) {
322 AV *av;
c7848ba1 323 case THRf_ZOMBIE:
bf49b057 324 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 325 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 326 ThrSETSTATE(t, THRf_DEAD);
327 MUTEX_UNLOCK(&t->mutex);
533c011a 328 PL_nthreads--;
8023c3ce
MB		 329 /*
330 * The SvREFCNT_dec below may take a long time (e.g. av
331 * may contain an object scalar whose destructor gets
332 * called) so we have to unlock threads_mutex and start
333 * all over again.
334 */
533c011a 335 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 336 JOIN(t, &av);
605e5515 337 SvREFCNT_dec((SV*)av);
bf49b057 338 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 339 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 340 goto retry_cleanup;
c7848ba1 341 case THRf_R_JOINABLE:
bf49b057 342 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 343 "perl_destruct: detaching thread %p\n", t));
344 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 345 /*
c7848ba1
MB		 346 * We unlock threads_mutex and t->mutex in the opposite order
347 * from which we locked them just so that DETACH won't
348 * deadlock if it panics. It's only a breach of good style
349 * not a bug since they are unlocks not locks.
350 */
533c011a 351 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 352 DETACH(t);
353 MUTEX_UNLOCK(&t->mutex);
8023c3ce 354 goto retry_cleanup;
c7848ba1 355 default:
bf49b057 356 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 357 "perl_destruct: ignoring %p (state %u)\n",
358 t, ThrSTATE(t)));
359 MUTEX_UNLOCK(&t->mutex);
c7848ba1 360 /* fall through and out */
33f46ff6
MB		 361 }
362 }
8023c3ce
MB		 363 /* We leave the above "Pass 1" loop with threads_mutex still locked */
364
365 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 366 while (PL_nthreads > 1)
11343788 367 {
bf49b057 368 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 369 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 370 PL_nthreads - 1));
371 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 372 }
373 /* At this point, we're the last thread */
533c011a 374 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 375 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 376 MUTEX_DESTROY(&PL_threads_mutex);
377 COND_DESTROY(&PL_nthreads_cond);
b57a092c 378 PL_nthreads--;
0f15f207 379#endif /* !defined(FAKE_THREADS) */
4d1ff10f 380#endif /* USE_5005THREADS */
11343788 381
3280af22 382 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 383#ifdef DEBUGGING
384 {
385 char *s;
155aba94 386 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 387 int i = atoi(s);
388 if (destruct_level < i)
389 destruct_level = i;
390 }
4633a7c4
LW		 391 }
392#endif
393
31d77e54
AB		 394
395 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 396 dJMPENV;
397 int x = 0;
398
399 JMPENV_PUSH(x);
400 if (PL_endav && !PL_minus_c)
401 call_list(PL_scopestack_ix, PL_endav);
402 JMPENV_POP;
26f423df 403 }
f3faeb53 404 LEAVE;
a0d0e21e
LW		 405 FREETMPS;
406
ff0cee69 407 /* We must account for everything. */
408
409 /* Destroy the main CV and syntax tree */
3280af22
NIS		 410 if (PL_main_root) {
411 PL_curpad = AvARRAY(PL_comppad);
412 op_free(PL_main_root);
413 PL_main_root = Nullop;
a0d0e21e 414 }
3280af22
NIS		 415 PL_curcop = &PL_compiling;
416 PL_main_start = Nullop;
417 SvREFCNT_dec(PL_main_cv);
418 PL_main_cv = Nullcv;
24d3c518 419 PL_dirty = TRUE;
ff0cee69 420
13621cfb
NIS		 421 /* Tell PerlIO we are about to tear things apart in case
422 we have layers which are using resources that should
423 be cleaned up now.
424 */
425
426 PerlIO_destruct(aTHX);
427
3280af22 428 if (PL_sv_objcount) {
a0d0e21e
LW		 429 /*
430 * Try to destruct global references. We do this first so that the
431 * destructors and destructees still exist. Some sv's might remain.
432 * Non-referenced objects are on their own.
433 */
a0d0e21e 434 sv_clean_objs();
8990e307
LW		 435 }
436
5cd24f17 437 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 438 SvREFCNT_dec(PL_warnhook);
439 PL_warnhook = Nullsv;
440 SvREFCNT_dec(PL_diehook);
441 PL_diehook = Nullsv;
5cd24f17 442
4b556e6c 443 /* call exit list functions */
3280af22 444 while (PL_exitlistlen-- > 0)
acfe0abc 445 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 446
3280af22 447 Safefree(PL_exitlist);
4b556e6c 448
a0d0e21e 449 if (destruct_level == 0){
8990e307 450
a0d0e21e 451 DEBUG_P(debprofdump());
ac27b0f5 452
a0d0e21e 453 /* The exit() function will do everything that needs doing. */
31d77e54 454 return STATUS_NATIVE_EXPORT;;
a0d0e21e 455 }
5dd60ef7 456
551a8b83
JH		 457 /* jettison our possibly duplicated environment */
458
459#ifdef USE_ENVIRON_ARRAY
460 if (environ != PL_origenviron) {
461 I32 i;
462
463 for (i = 0; environ[i]; i++)
4b420006
JH		 464 safesysfree(environ[i]);
465 /* Must use safesysfree() when working with environ. */
466 safesysfree(environ);
551a8b83
JH		 467
468 environ = PL_origenviron;
469 }
470#endif
471
5f8cb046
DM		 472#ifdef USE_ITHREADS
473 /* the syntax tree is shared between clones
474 * so op_free(PL_main_root) only ReREFCNT_dec's
475 * REGEXPs in the parent interpreter
476 * we need to manually ReREFCNT_dec for the clones
477 */
478 {
479 I32 i = AvFILLp(PL_regex_padav) + 1;
480 SV **ary = AvARRAY(PL_regex_padav);
481
482 while (i) {
35061a7e 483 SV *resv = ary[--i];
ba89bb6e 484 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 485
486 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 487 /* this is PL_reg_curpm, already freed
35061a7e
DM		 488 * flag is set in regexec.c:S_regtry
489 */
490 SvFLAGS(resv) &= ~SVf_BREAK;
1cc8b4c5
AB		 491 }
492 else if(SvREPADTMP(resv)) {
493 SvREPADTMP_off(resv);
494 }
35061a7e 495 else {
5f8cb046
DM		 496 ReREFCNT_dec(re);
497 }
498 }
499 }
500 SvREFCNT_dec(PL_regex_padav);
501 PL_regex_padav = Nullav;
502 PL_regex_pad = NULL;
503#endif
504
5f05dabc 505 /* loosen bonds of global variables */
506
3280af22
NIS		 507 if(PL_rsfp) {
508 (void)PerlIO_close(PL_rsfp);
509 PL_rsfp = Nullfp;
8ebc5c01 510 }
511
512 /* Filters for program text */
3280af22
NIS		 513 SvREFCNT_dec(PL_rsfp_filters);
514 PL_rsfp_filters = Nullav;
8ebc5c01 515
516 /* switches */
3280af22
NIS		 517 PL_preprocess = FALSE;
518 PL_minus_n = FALSE;
519 PL_minus_p = FALSE;
520 PL_minus_l = FALSE;
521 PL_minus_a = FALSE;
522 PL_minus_F = FALSE;
523 PL_doswitches = FALSE;
599cee73 524 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 525 PL_doextract = FALSE;
526 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 527 PL_unsafe = FALSE;
528
529 Safefree(PL_inplace);
530 PL_inplace = Nullch;
a7cb1f99 531 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 532
533 if (PL_e_script) {
534 SvREFCNT_dec(PL_e_script);
535 PL_e_script = Nullsv;
8ebc5c01 536 }
537
bc0a45ed
DM		 538 while (--PL_origargc >= 0) {
539 Safefree(PL_origargv[PL_origargc]);
540 }
541 Safefree(PL_origargv);
542
8ebc5c01 543 /* magical thingies */
544
7889fe52
NIS		 545 SvREFCNT_dec(PL_ofs_sv); /* $, */
546 PL_ofs_sv = Nullsv;
5f05dabc 547
7889fe52
NIS		 548 SvREFCNT_dec(PL_ors_sv); /* $\ */
549 PL_ors_sv = Nullsv;
8ebc5c01 550
3280af22
NIS		 551 SvREFCNT_dec(PL_rs); /* $/ */
552 PL_rs = Nullsv;
dc92893f 553
d33b2eba
GS		 554 PL_multiline = 0; /* $* */
555 Safefree(PL_osname); /* $^O */
556 PL_osname = Nullch;
5f05dabc 557
3280af22
NIS		 558 SvREFCNT_dec(PL_statname);
559 PL_statname = Nullsv;
560 PL_statgv = Nullgv;
5f05dabc 561
8ebc5c01 562 /* defgv, aka *_ should be taken care of elsewhere */
563
8ebc5c01 564 /* clean up after study() */
3280af22
NIS		 565 SvREFCNT_dec(PL_lastscream);
566 PL_lastscream = Nullsv;
567 Safefree(PL_screamfirst);
568 PL_screamfirst = 0;
569 Safefree(PL_screamnext);
570 PL_screamnext = 0;
8ebc5c01 571
7d5ea4e7
GS		 572 /* float buffer */
573 Safefree(PL_efloatbuf);
574 PL_efloatbuf = Nullch;
575 PL_efloatsize = 0;
576
8ebc5c01 577 /* startup and shutdown function lists */
3280af22 578 SvREFCNT_dec(PL_beginav);
5a837c8f 579 SvREFCNT_dec(PL_beginav_save);
3280af22 580 SvREFCNT_dec(PL_endav);
7d30b5c4 581 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 582 SvREFCNT_dec(PL_initav);
583 PL_beginav = Nullav;
5a837c8f 584 PL_beginav_save = Nullav;
3280af22 585 PL_endav = Nullav;
7d30b5c4 586 PL_checkav = Nullav;
3280af22 587 PL_initav = Nullav;
5618dfe8 588
8ebc5c01 589 /* shortcuts just get cleared */
3280af22 590 PL_envgv = Nullgv;
3280af22
NIS		 591 PL_incgv = Nullgv;
592 PL_hintgv = Nullgv;
593 PL_errgv = Nullgv;
594 PL_argvgv = Nullgv;
595 PL_argvoutgv = Nullgv;
596 PL_stdingv = Nullgv;
bf49b057 597 PL_stderrgv = Nullgv;
3280af22
NIS		 598 PL_last_in_gv = Nullgv;
599 PL_replgv = Nullgv;
5c831c24 600 PL_debstash = Nullhv;
8ebc5c01 601
602 /* reset so print() ends up where we expect */
603 setdefout(Nullgv);
5c831c24 604
7a1c5554
GS		 605 SvREFCNT_dec(PL_argvout_stack);
606 PL_argvout_stack = Nullav;
8ebc5c01 607
5c831c24
GS		 608 SvREFCNT_dec(PL_modglobal);
609 PL_modglobal = Nullhv;
610 SvREFCNT_dec(PL_preambleav);
611 PL_preambleav = Nullav;
612 SvREFCNT_dec(PL_subname);
613 PL_subname = Nullsv;
614 SvREFCNT_dec(PL_linestr);
615 PL_linestr = Nullsv;
616 SvREFCNT_dec(PL_pidstatus);
617 PL_pidstatus = Nullhv;
618 SvREFCNT_dec(PL_toptarget);
619 PL_toptarget = Nullsv;
620 SvREFCNT_dec(PL_bodytarget);
621 PL_bodytarget = Nullsv;
622 PL_formtarget = Nullsv;
623
d33b2eba 624 /* free locale stuff */
b9582b6a 625#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 626 Safefree(PL_collation_name);
627 PL_collation_name = Nullch;
b9582b6a 628#endif
d33b2eba 629
b9582b6a 630#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 631 Safefree(PL_numeric_name);
632 PL_numeric_name = Nullch;
a453c169 633 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 634#endif
d33b2eba 635
5c831c24
GS		 636 /* clear utf8 character classes */
637 SvREFCNT_dec(PL_utf8_alnum);
638 SvREFCNT_dec(PL_utf8_alnumc);
639 SvREFCNT_dec(PL_utf8_ascii);
640 SvREFCNT_dec(PL_utf8_alpha);
641 SvREFCNT_dec(PL_utf8_space);
642 SvREFCNT_dec(PL_utf8_cntrl);
643 SvREFCNT_dec(PL_utf8_graph);
644 SvREFCNT_dec(PL_utf8_digit);
645 SvREFCNT_dec(PL_utf8_upper);
646 SvREFCNT_dec(PL_utf8_lower);
647 SvREFCNT_dec(PL_utf8_print);
648 SvREFCNT_dec(PL_utf8_punct);
649 SvREFCNT_dec(PL_utf8_xdigit);
650 SvREFCNT_dec(PL_utf8_mark);
651 SvREFCNT_dec(PL_utf8_toupper);
652 SvREFCNT_dec(PL_utf8_tolower);
653 PL_utf8_alnum = Nullsv;
654 PL_utf8_alnumc = Nullsv;
655 PL_utf8_ascii = Nullsv;
656 PL_utf8_alpha = Nullsv;
657 PL_utf8_space = Nullsv;
658 PL_utf8_cntrl = Nullsv;
659 PL_utf8_graph = Nullsv;
660 PL_utf8_digit = Nullsv;
661 PL_utf8_upper = Nullsv;
662 PL_utf8_lower = Nullsv;
663 PL_utf8_print = Nullsv;
664 PL_utf8_punct = Nullsv;
665 PL_utf8_xdigit = Nullsv;
666 PL_utf8_mark = Nullsv;
667 PL_utf8_toupper = Nullsv;
668 PL_utf8_totitle = Nullsv;
669 PL_utf8_tolower = Nullsv;
670
971a9dd3
GS		 671 if (!specialWARN(PL_compiling.cop_warnings))
672 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 673 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 674 if (!specialCopIO(PL_compiling.cop_io))
675 SvREFCNT_dec(PL_compiling.cop_io);
676 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 677#ifdef USE_ITHREADS
678 Safefree(CopFILE(&PL_compiling));
679 CopFILE(&PL_compiling) = Nullch;
680 Safefree(CopSTASHPV(&PL_compiling));
681#else
01724ea0 682 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 683 CopFILEGV(&PL_compiling) = Nullgv;
684 /* cop_stash is not refcounted */
01724ea0 685#endif
5c831c24 686
a0d0e21e 687 /* Prepare to destruct main symbol table. */
5f05dabc 688
3280af22
NIS		 689 hv = PL_defstash;
690 PL_defstash = 0;
a0d0e21e 691 SvREFCNT_dec(hv);
5c831c24
GS		 692 SvREFCNT_dec(PL_curstname);
693 PL_curstname = Nullsv;
a0d0e21e 694
5a844595
GS		 695 /* clear queued errors */
696 SvREFCNT_dec(PL_errors);
697 PL_errors = Nullsv;
698
a0d0e21e 699 FREETMPS;
0453d815 700 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 701 if (PL_scopestack_ix != 0)
0453d815
PM		 702 Perl_warner(aTHX_ WARN_INTERNAL,
703 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 704 (long)PL_scopestack_ix);
705 if (PL_savestack_ix != 0)
0453d815
PM		 706 Perl_warner(aTHX_ WARN_INTERNAL,
707 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 708 (long)PL_savestack_ix);
709 if (PL_tmps_floor != -1)
0453d815 710 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 711 (long)PL_tmps_floor + 1);
a0d0e21e 712 if (cxstack_ix != -1)
0453d815 713 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 714 (long)cxstack_ix + 1);
a0d0e21e 715 }
8990e307
LW		 716
717 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 718 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 719 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 720
721 /* the 2 is for PL_fdpid and PL_strtab */
722 while (PL_sv_count > 2 && sv_clean_all())
723 ;
724
d33b2eba
GS		 725 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
726 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 727 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
728 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 729
d4777f27
GS		 730 AvREAL_off(PL_fdpid); /* no surviving entries */
731 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 732 PL_fdpid = Nullav;
733
6c644e78
GS		 734#ifdef HAVE_INTERP_INTERN
735 sys_intern_clear();
736#endif
737
6e72f9df 738 /* Destruct the global string table. */
739 {
740 /* Yell and reset the HeVAL() slots that are still holding refcounts,
741 * so that sv_free() won't fail on them.
742 */
743 I32 riter;
744 I32 max;
745 HE *hent;
746 HE **array;
747
748 riter = 0;
3280af22
NIS		 749 max = HvMAX(PL_strtab);
750 array = HvARRAY(PL_strtab);
6e72f9df 751 hent = array[0];
752 for (;;) {
0453d815
PM		 753 if (hent && ckWARN_d(WARN_INTERNAL)) {
754 Perl_warner(aTHX_ WARN_INTERNAL,
755 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 756 HeVAL(hent) - Nullsv, HeKEY(hent));
757 HeVAL(hent) = Nullsv;
758 hent = HeNEXT(hent);
759 }
760 if (!hent) {
761 if (++riter > max)
762 break;
763 hent = array[riter];
764 }
765 }
766 }
3280af22 767 SvREFCNT_dec(PL_strtab);
6e72f9df 768
e652bb2f 769#ifdef USE_ITHREADS
a0739874
DM		 770 /* free the pointer table used for cloning */
771 ptr_table_free(PL_ptr_table);
53186e96 772#endif
a0739874 773
d33b2eba
GS		 774 /* free special SVs */
775
776 SvREFCNT(&PL_sv_yes) = 0;
777 sv_clear(&PL_sv_yes);
778 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 779 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 780
781 SvREFCNT(&PL_sv_no) = 0;
782 sv_clear(&PL_sv_no);
783 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 784 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 785
786 SvREFCNT(&PL_sv_undef) = 0;
787 SvREADONLY_off(&PL_sv_undef);
d33b2eba 788
0453d815
PM		 789 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
790 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 791
3280af22 792 Safefree(PL_origfilename);
3280af22 793 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 794 if (PL_reg_curpm)
795 Safefree(PL_reg_curpm);
82ba1be6 796 Safefree(PL_reg_poscache);
3280af22
NIS		 797 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
798 Safefree(PL_op_mask);
cf36064f
GS		 799 Safefree(PL_psig_ptr);
800 Safefree(PL_psig_name);
2c2666fc 801 Safefree(PL_bitcount);
ce08f86c 802 Safefree(PL_psig_pend);
6e72f9df 803 nuke_stacks();
3280af22 804 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 805
a0d0e21e 806 DEBUG_P(debprofdump());
4d1ff10f 807#ifdef USE_5005THREADS
5f08fbcd 808 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 809 MUTEX_DESTROY(&PL_sv_mutex);
810 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 811 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 812 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 813 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 814#ifdef EMULATE_ATOMIC_REFCOUNTS
815 MUTEX_DESTROY(&PL_svref_mutex);
816#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 817
8023c3ce 818 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 819 Safefree(SvPVX(PL_thrsv));
820 Safefree(SvANY(PL_thrsv));
821 Safefree(PL_thrsv);
822 PL_thrsv = Nullsv;
4d1ff10f 823#endif /* USE_5005THREADS */
d33b2eba 824
e5dd39fc
AB		 825#ifdef USE_REENTRANT_API
826 Safefree(PL_reentrant_buffer->tmbuff);
827 Safefree(PL_reentrant_buffer);
828#endif
829
612f20c3
GS		 830 sv_free_arenas();
831
fc36a67e 832 /* As the absolutely last thing, free the non-arena SV for mess() */
833
3280af22 834 if (PL_mess_sv) {
9c63abab
GS		 835 /* it could have accumulated taint magic */
836 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
837 MAGIC* mg;
838 MAGIC* moremagic;
839 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
840 moremagic = mg->mg_moremagic;
14befaf4
DM		 841 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
842 && mg->mg_len >= 0)
9c63abab
GS		 843 Safefree(mg->mg_ptr);
844 Safefree(mg);
845 }
846 }
fc36a67e 847 /* we know that type >= SVt_PV */
155aba94 848 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 849 Safefree(SvPVX(PL_mess_sv));
850 Safefree(SvANY(PL_mess_sv));
851 Safefree(PL_mess_sv);
852 PL_mess_sv = Nullsv;
fc36a67e 853 }
31d77e54 854 return STATUS_NATIVE_EXPORT;
79072805
LW		 855}
856
954c1994
GS		 857/*
858=for apidoc perl_free
859
860Releases a Perl interpreter. See L<perlembed>.
861
862=cut
863*/
864
79072805 865void
0cb96387 866perl_free(pTHXx)
79072805 867{
acfe0abc 868#if defined(WIN32) || defined(NETWARE)
ce3e5b80 869# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 870# ifdef NETWARE
871 void *host = nw_internal_host;
872# else
873 void *host = w32_internal_host;
874# endif
875# ifndef NETWARE
876 if (PerlProc_lasthost()) {
6ea0e807 877# ifdef USE_PERLIO
ce08f86c 878 PerlIO_cleanup();
6ea0e807 879# endif
acfe0abc
GS		 880 }
881# endif
ce3e5b80 882 PerlMem_free(aTHXx);
acfe0abc
GS		 883# ifdef NETWARE
884 nw5_delete_internal_host(host);
885# else
886 win32_delete_internal_host(host);
887# endif
1c0ca838 888# else
6ea0e807 889# ifdef USE_PERLIO
acfe0abc 890 PerlIO_cleanup();
6ea0e807 891# endif
1c0ca838
GS		 892 PerlMem_free(aTHXx);
893# endif
acfe0abc
GS		 894#else
895 PerlMem_free(aTHXx);
76e3520e 896#endif
79072805
LW		 897}
898
4b556e6c 899void
864dbfa3 900Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 901{
3280af22
NIS		 902 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
903 PL_exitlist[PL_exitlistlen].fn = fn;
904 PL_exitlist[PL_exitlistlen].ptr = ptr;
905 ++PL_exitlistlen;
4b556e6c
JD		 906}
907
954c1994
GS		 908/*
909=for apidoc perl_parse
910
911Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
912
913=cut
914*/
915
79072805 916int
0cb96387 917perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 918{
6224f72b 919 I32 oldscope;
6224f72b 920 int ret;
db36c5a1 921 dJMPENV;
4d1ff10f 922#ifdef USE_5005THREADS
cea2e8a9
GS		 923 dTHX;
924#endif
8d063cd8 925
a687059c
LW		 926#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
927#ifdef IAMSUID
928#undef IAMSUID
cea2e8a9 929 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 930setuid perl scripts securely.\n");
931#endif
932#endif
933
8f1f23e8 934#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 935 _dyld_lookup_and_bind
936 ("__environ", (unsigned long *) &environ_pointer, NULL);
937#endif /* environ */
938
3280af22 939 PL_origargc = argc;
bc0a45ed
DM		 940 {
941 /* we copy rather than point to argv
942 * since perl_clone will copy and perl_destruct
943 * has no way of knowing if we've made a copy or
944 * just point to argv
945 */
946 int i = PL_origargc;
947 New(0, PL_origargv, i+1, char*);
948 PL_origargv[i] = '\0';
949 while (i-- > 0) {
950 PL_origargv[i] = savepv(argv[i]);
951 }
952 }
953
fa6a1c44 954#ifdef USE_ENVIRON_ARRAY
3280af22 955 PL_origenviron = environ;
a0d0e21e
LW		 956#endif
957
3280af22 958 if (PL_do_undump) {
a0d0e21e
LW		 959
960 /* Come here if running an undumped a.out. */
961
3280af22
NIS		 962 PL_origfilename = savepv(argv[0]);
963 PL_do_undump = FALSE;
a0d0e21e 964 cxstack_ix = -1; /* start label stack again */
748a9306 965 init_ids();
a0d0e21e
LW		 966 init_postdump_symbols(argc,argv,env);
967 return 0;
968 }
969
3280af22
NIS		 970 if (PL_main_root) {
971 PL_curpad = AvARRAY(PL_comppad);
972 op_free(PL_main_root);
973 PL_main_root = Nullop;
ff0cee69 974 }
3280af22
NIS		 975 PL_main_start = Nullop;
976 SvREFCNT_dec(PL_main_cv);
977 PL_main_cv = Nullcv;
79072805 978
3280af22
NIS		 979 time(&PL_basetime);
980 oldscope = PL_scopestack_ix;
599cee73 981 PL_dowarn = G_WARN_OFF;
f86702cc 982
14dd3ad8
GS		 983#ifdef PERL_FLEXIBLE_EXCEPTIONS
984 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
985#else
986 JMPENV_PUSH(ret);
987#endif
6224f72b 988 switch (ret) {
312caa8e 989 case 0:
14dd3ad8
GS		 990#ifndef PERL_FLEXIBLE_EXCEPTIONS
991 parse_body(env,xsinit);
992#endif
7d30b5c4
GS		 993 if (PL_checkav)
994 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 995 ret = 0;
996 break;
6224f72b
GS		 997 case 1:
998 STATUS_ALL_FAILURE;
999 /* FALL THROUGH */
1000 case 2:
1001 /* my_exit() was called */
3280af22 1002 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1003 LEAVE;
1004 FREETMPS;
3280af22 1005 PL_curstash = PL_defstash;
7d30b5c4
GS		 1006 if (PL_checkav)
1007 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1008 ret = STATUS_NATIVE_EXPORT;
1009 break;
6224f72b 1010 case 3:
bf49b057 1011 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1012 ret = 1;
1013 break;
6224f72b 1014 }
14dd3ad8
GS		 1015 JMPENV_POP;
1016 return ret;
1017}
1018
1019#ifdef PERL_FLEXIBLE_EXCEPTIONS
1020STATIC void *
1021S_vparse_body(pTHX_ va_list args)
1022{
1023 char **env = va_arg(args, char**);
1024 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1025
1026 return parse_body(env, xsinit);
312caa8e 1027}
14dd3ad8 1028#endif
312caa8e
CS		 1029
1030STATIC void *
14dd3ad8 1031S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1032{
312caa8e
CS		 1033 int argc = PL_origargc;
1034 char **argv = PL_origargv;
312caa8e
CS		 1035 char *scriptname = NULL;
1036 int fdscript = -1;
1037 VOL bool dosearch = FALSE;
1038 char *validarg = "";
1039 AV* comppadlist;
1040 register SV *sv;
1041 register char *s;
cf756827 1042 char *cddir = Nullch;
312caa8e 1043
3280af22 1044 sv_setpvn(PL_linestr,"",0);
79cb57f6 1045 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1046 SAVEFREESV(sv);
1047 init_main_stash();
54310121 1048
6224f72b
GS		 1049 for (argc--,argv++; argc > 0; argc--,argv++) {
1050 if (argv[0][0] != '-' || !argv[0][1])
1051 break;
1052#ifdef DOSUID
1053 if (*validarg)
1054 validarg = " PHOOEY ";
1055 else
1056 validarg = argv[0];
13281fa4 1057#endif
6224f72b
GS		 1058 s = argv[0]+1;
1059 reswitch:
1060 switch (*s) {
729a02f2
GS		 1061 case 'C':
1062#ifdef WIN32
c0932edc 1063 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1064 /* FALL THROUGH */
1065#endif
1d5472a9
GS		 1066#ifndef PERL_STRICT_CR
1067 case '\r':
1068#endif
6224f72b
GS		 1069 case ' ':
1070 case '0':
1071 case 'F':
1072 case 'a':
1073 case 'c':
1074 case 'd':
1075 case 'D':
1076 case 'h':
1077 case 'i':
1078 case 'l':
1079 case 'M':
1080 case 'm':
1081 case 'n':
1082 case 'p':
1083 case 's':
1084 case 'u':
1085 case 'U':
1086 case 'v':
599cee73
PM		 1087 case 'W':
1088 case 'X':
6224f72b 1089 case 'w':
155aba94 1090 if ((s = moreswitches(s)))
6224f72b
GS		 1091 goto reswitch;
1092 break;
33b78306 1093
6224f72b 1094 case 'T':
3280af22 1095 PL_tainting = TRUE;
6224f72b
GS		 1096 s++;
1097 goto reswitch;
f86702cc 1098
6224f72b 1099 case 'e':
bf4acbe4
GS		 1100#ifdef MACOS_TRADITIONAL
1101 /* ignore -e for Dev:Pseudo argument */
1102 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1103 break;
bf4acbe4 1104#endif
3280af22 1105 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1106 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1107 if (!PL_e_script) {
79cb57f6 1108 PL_e_script = newSVpvn("",0);
0cb96387 1109 filter_add(read_e_script, NULL);
6224f72b
GS		 1110 }
1111 if (*++s)
3280af22 1112 sv_catpv(PL_e_script, s);
6224f72b 1113 else if (argv[1]) {
3280af22 1114 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1115 argc--,argv++;
1116 }
1117 else
cea2e8a9 1118 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1119 sv_catpv(PL_e_script, "\n");
6224f72b 1120 break;
afe37c7d 1121
6224f72b
GS		 1122 case 'I': /* -I handled both here and in moreswitches() */
1123 forbid_setid("-I");
1124 if (!*++s && (s=argv[1]) != Nullch) {
1125 argc--,argv++;
1126 }
6224f72b 1127 if (s && *s) {
0df16ed7
GS		 1128 char *p;
1129 STRLEN len = strlen(s);
1130 p = savepvn(s, len);
9c8a64f0 1131 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1132 sv_catpvn(sv, "-I", 2);
1133 sv_catpvn(sv, p, len);
1134 sv_catpvn(sv, " ", 1);
6224f72b 1135 Safefree(p);
0df16ed7
GS		 1136 }
1137 else
a67e862a 1138 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1139 break;
1140 case 'P':
1141 forbid_setid("-P");
3280af22 1142 PL_preprocess = TRUE;
6224f72b
GS		 1143 s++;
1144 goto reswitch;
1145 case 'S':
1146 forbid_setid("-S");
1147 dosearch = TRUE;
1148 s++;
1149 goto reswitch;
1150 case 'V':
3280af22
NIS		 1151 if (!PL_preambleav)
1152 PL_preambleav = newAV();
1153 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1154 if (*++s != ':') {
3280af22 1155 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1156#ifdef VMS
6b88bc9c 1157 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1158#else
3280af22 1159 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1160#endif
3280af22 1161 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1162# ifdef DEBUGGING
3280af22 1163 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1164# endif
6224f72b 1165# ifdef MULTIPLICITY
8f872242 1166 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1167# endif
4d1ff10f
AB		 1168# ifdef USE_5005THREADS
1169 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1170# endif
ac5e8965
JH		 1171# ifdef USE_ITHREADS
1172 sv_catpv(PL_Sv," USE_ITHREADS");
1173# endif
10cc9d2a
JH		 1174# ifdef USE_64_BIT_INT
1175 sv_catpv(PL_Sv," USE_64_BIT_INT");
1176# endif
1177# ifdef USE_64_BIT_ALL
1178 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1179# endif
1180# ifdef USE_LONG_DOUBLE
1181 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1182# endif
53430762
JH		 1183# ifdef USE_LARGE_FILES
1184 sv_catpv(PL_Sv," USE_LARGE_FILES");
1185# endif
ac5e8965
JH		 1186# ifdef USE_SOCKS
1187 sv_catpv(PL_Sv," USE_SOCKS");
1188# endif
b363f7ed
GS		 1189# ifdef PERL_IMPLICIT_CONTEXT
1190 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1191# endif
1192# ifdef PERL_IMPLICIT_SYS
1193 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1194# endif
3280af22 1195 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1196
6224f72b
GS		 1197#if defined(LOCAL_PATCH_COUNT)
1198 if (LOCAL_PATCH_COUNT > 0) {
1199 int i;
3280af22 1200 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1201 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1202 if (PL_localpatches[i])
cea2e8a9 1203 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1204 }
1205 }
1206#endif
cea2e8a9 1207 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1208#ifdef __DATE__
1209# ifdef __TIME__
cea2e8a9 1210 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1211# else
cea2e8a9 1212 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1213# endif
1214#endif
3280af22 1215 sv_catpv(PL_Sv, "; \
6224f72b 1216$\"=\"\\n \"; \
69fcd688
JH		 1217@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1218#ifdef __CYGWIN__
1219 sv_catpv(PL_Sv,"\
1220push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1221#endif
1222 sv_catpv(PL_Sv, "\
6224f72b
GS		 1223print \" \\%ENV:\\n @env\\n\" if @env; \
1224print \" \\@INC:\\n @INC\\n\";");
1225 }
1226 else {
3280af22
NIS		 1227 PL_Sv = newSVpv("config_vars(qw(",0);
1228 sv_catpv(PL_Sv, ++s);
1229 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1230 s += strlen(s);
1231 }
3280af22 1232 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1233 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1234 goto reswitch;
1235 case 'x':
3280af22 1236 PL_doextract = TRUE;
6224f72b
GS		 1237 s++;
1238 if (*s)
f4c556ac 1239 cddir = s;
6224f72b
GS		 1240 break;
1241 case 0:
1242 break;
1243 case '-':
1244 if (!*++s || isSPACE(*s)) {
1245 argc--,argv++;
1246 goto switch_end;
1247 }
1248 /* catch use of gnu style long options */
1249 if (strEQ(s, "version")) {
1250 s = "v";
1251 goto reswitch;
1252 }
1253 if (strEQ(s, "help")) {
1254 s = "h";
1255 goto reswitch;
1256 }
1257 s--;
1258 /* FALL THROUGH */
1259 default:
cea2e8a9 1260 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1261 }
1262 }
6224f72b 1263 switch_end:
54310121 1264
f675dbe5
CB		 1265 if (
1266#ifndef SECURE_INTERNAL_GETENV
1267 !PL_tainting &&
1268#endif
cf756827 1269 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1270 {
cf756827 1271 char *popt = s;
74288ac8
GS		 1272 while (isSPACE(*s))
1273 s++;
1274 if (*s == '-' && *(s+1) == 'T')
1275 PL_tainting = TRUE;
1276 else {
cf756827 1277 char *popt_copy = Nullch;
74288ac8 1278 while (s && *s) {
4ea8f8fb 1279 char *d;
74288ac8
GS		 1280 while (isSPACE(*s))
1281 s++;
1282 if (*s == '-') {
1283 s++;
1284 if (isSPACE(*s))
1285 continue;
1286 }
4ea8f8fb 1287 d = s;
74288ac8
GS		 1288 if (!*s)
1289 break;
1290 if (!strchr("DIMUdmw", *s))
cea2e8a9 1291 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1292 while (++s && *s) {
1293 if (isSPACE(*s)) {
cf756827
GS		 1294 if (!popt_copy) {
1295 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1296 s = popt_copy + (s - popt);
1297 d = popt_copy + (d - popt);
1298 }
4ea8f8fb
MS		 1299 *s++ = '\0';
1300 break;
1301 }
1302 }
1303 moreswitches(d);
6224f72b 1304 }
6224f72b
GS		 1305 }
1306 }
a0d0e21e 1307
6224f72b
GS		 1308 if (!scriptname)
1309 scriptname = argv[0];
3280af22 1310 if (PL_e_script) {
6224f72b
GS		 1311 argc++,argv--;
1312 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1313 }
1314 else if (scriptname == Nullch) {
1315#ifdef MSDOS
1316 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1317 moreswitches("h");
1318#endif
1319 scriptname = "-";
1320 }
1321
1322 init_perllib();
1323
1324 open_script(scriptname,dosearch,sv,&fdscript);
1325
1326 validate_suid(validarg, scriptname,fdscript);
1327
64ca3a65 1328#ifndef PERL_MICRO
0b5b802d
GS		 1329#if defined(SIGCHLD) || defined(SIGCLD)
1330 {
1331#ifndef SIGCHLD
1332# define SIGCHLD SIGCLD
1333#endif
1334 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1335 if (sigstate == SIG_IGN) {
1336 if (ckWARN(WARN_SIGNAL))
1337 Perl_warner(aTHX_ WARN_SIGNAL,
1338 "Can't ignore signal CHLD, forcing to default");
1339 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1340 }
1341 }
1342#endif
64ca3a65 1343#endif
0b5b802d 1344
bf4acbe4
GS		 1345#ifdef MACOS_TRADITIONAL
1346 if (PL_doextract || gMacPerl_AlwaysExtract) {
1347#else
f4c556ac 1348 if (PL_doextract) {
bf4acbe4 1349#endif
6224f72b 1350 find_beginning();
f4c556ac
GS		 1351 if (cddir && PerlDir_chdir(cddir) < 0)
1352 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1353
1354 }
6224f72b 1355
3280af22
NIS		 1356 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1357 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1358 CvUNIQUE_on(PL_compcv);
1359
1360 PL_comppad = newAV();
1361 av_push(PL_comppad, Nullsv);
1362 PL_curpad = AvARRAY(PL_comppad);
1363 PL_comppad_name = newAV();
1364 PL_comppad_name_fill = 0;
1365 PL_min_intro_pending = 0;
1366 PL_padix = 0;
4d1ff10f 1367#ifdef USE_5005THREADS
79cb57f6 1368 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1369 PL_curpad[0] = (SV*)newAV();
1370 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1371 CvOWNER(PL_compcv) = 0;
1372 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1373 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1374#endif /* USE_5005THREADS */
6224f72b
GS		 1375
1376 comppadlist = newAV();
1377 AvREAL_off(comppadlist);
3280af22
NIS		 1378 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1379 av_store(comppadlist, 1, (SV*)PL_comppad);
1380 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1381
0c4f7ff0 1382 boot_core_PerlIO();
6224f72b 1383 boot_core_UNIVERSAL();
9a34ef1d 1384#ifndef PERL_MICRO
09bef843 1385 boot_core_xsutils();
9a34ef1d 1386#endif
6224f72b
GS		 1387
1388 if (xsinit)
acfe0abc 1389 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1390#ifndef PERL_MICRO
ed79a026 1391#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1392 init_os_extras();
6224f72b 1393#endif
64ca3a65 1394#endif
6224f72b 1395
29209bc5 1396#ifdef USE_SOCKS
1b9c9cf5
DH		 1397# ifdef HAS_SOCKS5_INIT
1398 socks5_init(argv[0]);
1399# else
29209bc5 1400 SOCKSinit(argv[0]);
1b9c9cf5 1401# endif
ac27b0f5 1402#endif
29209bc5 1403
6224f72b
GS		 1404 init_predump_symbols();
1405 /* init_postdump_symbols not currently designed to be called */
1406 /* more than once (ENV isn't cleared first, for example) */
1407 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1408 if (!PL_do_undump)
6224f72b
GS		 1409 init_postdump_symbols(argc,argv,env);
1410
1411 init_lexer();
1412
1413 /* now parse the script */
1414
1415 SETERRNO(0,SS$_NORMAL);
3280af22 1416 PL_error_count = 0;
bf4acbe4
GS		 1417#ifdef MACOS_TRADITIONAL
1418 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1419 if (PL_minus_c)
1420 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1421 else {
1422 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1423 MacPerl_MPWFileName(PL_origfilename));
1424 }
1425 }
1426#else
3280af22
NIS		 1427 if (yyparse() || PL_error_count) {
1428 if (PL_minus_c)
cea2e8a9 1429 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1430 else {
cea2e8a9 1431 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1432 PL_origfilename);
6224f72b
GS		 1433 }
1434 }
bf4acbe4 1435#endif
57843af0 1436 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1437 PL_curstash = PL_defstash;
1438 PL_preprocess = FALSE;
1439 if (PL_e_script) {
1440 SvREFCNT_dec(PL_e_script);
1441 PL_e_script = Nullsv;
6224f72b
GS		 1442 }
1443
8bfdd7d9
HS		 1444/*
1445 Not sure that this is still the right place to do this now that we
1446 no longer use PL_nrs. HVDS 2001/09/09
1447*/
864dbfa3 1448 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1449
3280af22 1450 if (PL_do_undump)
6224f72b
GS		 1451 my_unexec();
1452
57843af0
GS		 1453 if (isWARN_ONCE) {
1454 SAVECOPFILE(PL_curcop);
1455 SAVECOPLINE(PL_curcop);
3280af22 1456 gv_check(PL_defstash);
57843af0 1457 }
6224f72b
GS		 1458
1459 LEAVE;
1460 FREETMPS;
1461
1462#ifdef MYMALLOC
1463 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1464 dump_mstats("after compilation:");
1465#endif
1466
1467 ENTER;
3280af22 1468 PL_restartop = 0;
312caa8e 1469 return NULL;
6224f72b
GS		 1470}
1471
954c1994
GS		 1472/*
1473=for apidoc perl_run
1474
1475Tells a Perl interpreter to run. See L<perlembed>.
1476
1477=cut
1478*/
1479
6224f72b 1480int
0cb96387 1481perl_run(pTHXx)
6224f72b 1482{
6224f72b 1483 I32 oldscope;
14dd3ad8 1484 int ret = 0;
db36c5a1 1485 dJMPENV;
4d1ff10f 1486#ifdef USE_5005THREADS
cea2e8a9
GS		 1487 dTHX;
1488#endif
6224f72b 1489
3280af22 1490 oldscope = PL_scopestack_ix;
6224f72b 1491
14dd3ad8 1492#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1493 redo_body:
14dd3ad8
GS		 1494 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1495#else
1496 JMPENV_PUSH(ret);
1497#endif
6224f72b
GS		 1498 switch (ret) {
1499 case 1:
1500 cxstack_ix = -1; /* start context stack again */
312caa8e 1501 goto redo_body;
14dd3ad8
GS		 1502 case 0: /* normal completion */
1503#ifndef PERL_FLEXIBLE_EXCEPTIONS
1504 redo_body:
1505 run_body(oldscope);
1506#endif
1507 /* FALL THROUGH */
1508 case 2: /* my_exit() */
3280af22 1509 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1510 LEAVE;
1511 FREETMPS;
3280af22 1512 PL_curstash = PL_defstash;
31d77e54
AB		 1513 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1514 PL_endav && !PL_minus_c)
1515 call_list(oldscope, PL_endav);
6224f72b
GS		 1516#ifdef MYMALLOC
1517 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1518 dump_mstats("after execution: ");
1519#endif
14dd3ad8
GS		 1520 ret = STATUS_NATIVE_EXPORT;
1521 break;
6224f72b 1522 case 3:
312caa8e
CS		 1523 if (PL_restartop) {
1524 POPSTACK_TO(PL_mainstack);
1525 goto redo_body;
6224f72b 1526 }
bf49b057 1527 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1528 FREETMPS;
14dd3ad8
GS		 1529 ret = 1;
1530 break;
6224f72b
GS		 1531 }
1532
14dd3ad8
GS		 1533 JMPENV_POP;
1534 return ret;
312caa8e
CS		 1535}
1536
14dd3ad8 1537#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1538STATIC void *
14dd3ad8 1539S_vrun_body(pTHX_ va_list args)
312caa8e 1540{
312caa8e
CS		 1541 I32 oldscope = va_arg(args, I32);
1542
14dd3ad8
GS		 1543 return run_body(oldscope);
1544}
1545#endif
1546
1547
1548STATIC void *
1549S_run_body(pTHX_ I32 oldscope)
1550{
6224f72b 1551 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1552 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1553
3280af22 1554 if (!PL_restartop) {
6224f72b
GS		 1555 DEBUG_x(dump_all());
1556 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1557 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1558 PTR2UV(thr)));
6224f72b 1559
3280af22 1560 if (PL_minus_c) {
bf4acbe4
GS		 1561#ifdef MACOS_TRADITIONAL
1562 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1563#else
bf49b057 1564 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1565#endif
6224f72b
GS		 1566 my_exit(0);
1567 }
3280af22 1568 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1569 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1570 if (PL_initav)
1571 call_list(oldscope, PL_initav);
6224f72b
GS		 1572 }
1573
1574 /* do it */
1575
3280af22 1576 if (PL_restartop) {
533c011a 1577 PL_op = PL_restartop;
3280af22 1578 PL_restartop = 0;
cea2e8a9 1579 CALLRUNOPS(aTHX);
6224f72b 1580 }
3280af22
NIS		 1581 else if (PL_main_start) {
1582 CvDEPTH(PL_main_cv) = 1;
533c011a 1583 PL_op = PL_main_start;
cea2e8a9 1584 CALLRUNOPS(aTHX);
6224f72b
GS		 1585 }
1586
f6b3007c
JH		 1587 my_exit(0);
1588 /* NOTREACHED */
312caa8e 1589 return NULL;
6224f72b
GS		 1590}
1591
954c1994
GS		 1592/*
1593=for apidoc p||get_sv
1594
1595Returns the SV of the specified Perl scalar. If C<create> is set and the
1596Perl variable does not exist then it will be created. If C<create> is not
1597set and the variable does not exist then NULL is returned.
1598
1599=cut
1600*/
1601
6224f72b 1602SV*
864dbfa3 1603Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1604{
1605 GV *gv;
4d1ff10f 1606#ifdef USE_5005THREADS
6224f72b
GS		 1607 if (name[1] == '\0' && !isALPHA(name[0])) {
1608 PADOFFSET tmp = find_threadsv(name);
411caa50 1609 if (tmp != NOT_IN_PAD)
6224f72b 1610 return THREADSV(tmp);
6224f72b 1611 }
4d1ff10f 1612#endif /* USE_5005THREADS */
6224f72b
GS		 1613 gv = gv_fetchpv(name, create, SVt_PV);
1614 if (gv)
1615 return GvSV(gv);
1616 return Nullsv;
1617}
1618
954c1994
GS		 1619/*
1620=for apidoc p||get_av
1621
1622Returns the AV of the specified Perl array. If C<create> is set and the
1623Perl variable does not exist then it will be created. If C<create> is not
1624set and the variable does not exist then NULL is returned.
1625
1626=cut
1627*/
1628
6224f72b 1629AV*
864dbfa3 1630Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1631{
1632 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1633 if (create)
1634 return GvAVn(gv);
1635 if (gv)
1636 return GvAV(gv);
1637 return Nullav;
1638}
1639
954c1994
GS		 1640/*
1641=for apidoc p||get_hv
1642
1643Returns the HV of the specified Perl hash. If C<create> is set and the
1644Perl variable does not exist then it will be created. If C<create> is not
1645set and the variable does not exist then NULL is returned.
1646
1647=cut
1648*/
1649
6224f72b 1650HV*
864dbfa3 1651Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1652{
a0d0e21e
LW		 1653 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1654 if (create)
1655 return GvHVn(gv);
1656 if (gv)
1657 return GvHV(gv);
1658 return Nullhv;
1659}
1660
954c1994
GS		 1661/*
1662=for apidoc p||get_cv
1663
1664Returns the CV of the specified Perl subroutine. If C<create> is set and
1665the Perl subroutine does not exist then it will be declared (which has the
1666same effect as saying C<sub name;>). If C<create> is not set and the
1667subroutine does not exist then NULL is returned.
1668
1669=cut
1670*/
1671
a0d0e21e 1672CV*
864dbfa3 1673Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1674{
1675 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1676 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1677 /* XXX this is probably not what they think they're getting.
1678 * It has the same effect as "sub name;", i.e. just a forward
1679 * declaration! */
8ebc5c01 1680 if (create && !GvCVu(gv))
774d564b 1681 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1682 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1683 Nullop,
a0d0e21e
LW		 1684 Nullop);
1685 if (gv)
8ebc5c01 1686 return GvCVu(gv);
a0d0e21e
LW		 1687 return Nullcv;
1688}
1689
79072805
LW		 1690/* Be sure to refetch the stack pointer after calling these routines. */
1691
954c1994
GS		 1692/*
1693=for apidoc p||call_argv
1694
1695Performs a callback to the specified Perl sub. See L<perlcall>.
1696
1697=cut
1698*/
1699
a0d0e21e 1700I32
864dbfa3 1701Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1702
8ac85365
NIS		 1703 /* See G_* flags in cop.h */
1704 /* null terminated arg list */
8990e307 1705{
a0d0e21e 1706 dSP;
8990e307 1707
924508f0 1708 PUSHMARK(SP);
a0d0e21e 1709 if (argv) {
8990e307 1710 while (*argv) {
a0d0e21e 1711 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1712 argv++;
1713 }
a0d0e21e 1714 PUTBACK;
8990e307 1715 }
864dbfa3 1716 return call_pv(sub_name, flags);
8990e307
LW		 1717}
1718
954c1994
GS		 1719/*
1720=for apidoc p||call_pv
1721
1722Performs a callback to the specified Perl sub. See L<perlcall>.
1723
1724=cut
1725*/
1726
a0d0e21e 1727I32
864dbfa3 1728Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1729 /* name of the subroutine */
1730 /* See G_* flags in cop.h */
a0d0e21e 1731{
864dbfa3 1732 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1733}
1734
954c1994
GS		 1735/*
1736=for apidoc p||call_method
1737
1738Performs a callback to the specified Perl method. The blessed object must
1739be on the stack. See L<perlcall>.
1740
1741=cut
1742*/
1743
a0d0e21e 1744I32
864dbfa3 1745Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1746 /* name of the subroutine */
1747 /* See G_* flags in cop.h */
a0d0e21e 1748{
968b3946 1749 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1750}
1751
1752/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1753/*
1754=for apidoc p||call_sv
1755
1756Performs a callback to the Perl sub whose name is in the SV. See
1757L<perlcall>.
1758
1759=cut
1760*/
1761
a0d0e21e 1762I32
864dbfa3 1763Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1764 /* See G_* flags in cop.h */
a0d0e21e 1765{
924508f0 1766 dSP;
a0d0e21e 1767 LOGOP myop; /* fake syntax tree node */
968b3946 1768 UNOP method_op;
aa689395 1769 I32 oldmark;
13689cfe 1770 volatile I32 retval = 0;
a0d0e21e 1771 I32 oldscope;
54310121 1772 bool oldcatch = CATCH_GET;
6224f72b 1773 int ret;
533c011a 1774 OP* oldop = PL_op;
db36c5a1 1775 dJMPENV;
1e422769 1776
a0d0e21e
LW		 1777 if (flags & G_DISCARD) {
1778 ENTER;
1779 SAVETMPS;
1780 }
1781
aa689395 1782 Zero(&myop, 1, LOGOP);
54310121 1783 myop.op_next = Nullop;
f51d4af5 1784 if (!(flags & G_NOARGS))
aa689395 1785 myop.op_flags |= OPf_STACKED;
54310121 1786 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1787 (flags & G_ARRAY) ? OPf_WANT_LIST :
1788 OPf_WANT_SCALAR);
462e5cf6 1789 SAVEOP();
533c011a 1790 PL_op = (OP*)&myop;
aa689395 1791
3280af22
NIS		 1792 EXTEND(PL_stack_sp, 1);
1793 *++PL_stack_sp = sv;
aa689395 1794 oldmark = TOPMARK;
3280af22 1795 oldscope = PL_scopestack_ix;
a0d0e21e 1796
3280af22 1797 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1798 /* Handle first BEGIN of -d. */
3280af22 1799 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1800 /* Try harder, since this may have been a sighandler, thus
1801 * curstash may be meaningless. */
3280af22 1802 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1803 && !(flags & G_NODEBUG))
533c011a 1804 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1805
968b3946
GS		 1806 if (flags & G_METHOD) {
1807 Zero(&method_op, 1, UNOP);
1808 method_op.op_next = PL_op;
1809 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1810 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1811 PL_op = (OP*)&method_op;
968b3946
GS		 1812 }
1813
312caa8e 1814 if (!(flags & G_EVAL)) {
0cdb2077 1815 CATCH_SET(TRUE);
14dd3ad8 1816 call_body((OP*)&myop, FALSE);
312caa8e 1817 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1818 CATCH_SET(oldcatch);
312caa8e
CS		 1819 }
1820 else {
d78bda3d 1821 myop.op_other = (OP*)&myop;
3280af22 1822 PL_markstack_ptr--;
4633a7c4
LW		 1823 /* we're trying to emulate pp_entertry() here */
1824 {
c09156bb 1825 register PERL_CONTEXT *cx;
54310121 1826 I32 gimme = GIMME_V;
ac27b0f5 1827
4633a7c4
LW		 1828 ENTER;
1829 SAVETMPS;
ac27b0f5 1830
968b3946 1831 push_return(Nullop);
1d76a5c3 1832 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1833 PUSHEVAL(cx, 0, 0);
533c011a 1834 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1835
faef0170 1836 PL_in_eval = EVAL_INEVAL;
4633a7c4 1837 if (flags & G_KEEPERR)
faef0170 1838 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1839 else
38a03e6e 1840 sv_setpv(ERRSV,"");
4633a7c4 1841 }
3280af22 1842 PL_markstack_ptr++;
a0d0e21e 1843
14dd3ad8
GS		 1844#ifdef PERL_FLEXIBLE_EXCEPTIONS
1845 redo_body:
1846 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1847 (OP*)&myop, FALSE);
14dd3ad8
GS		 1848#else
1849 JMPENV_PUSH(ret);
1850#endif
6224f72b
GS		 1851 switch (ret) {
1852 case 0:
14dd3ad8
GS		 1853#ifndef PERL_FLEXIBLE_EXCEPTIONS
1854 redo_body:
1855 call_body((OP*)&myop, FALSE);
1856#endif
312caa8e
CS		 1857 retval = PL_stack_sp - (PL_stack_base + oldmark);
1858 if (!(flags & G_KEEPERR))
1859 sv_setpv(ERRSV,"");
a0d0e21e 1860 break;
6224f72b 1861 case 1:
f86702cc 1862 STATUS_ALL_FAILURE;
a0d0e21e 1863 /* FALL THROUGH */
6224f72b 1864 case 2:
a0d0e21e 1865 /* my_exit() was called */
3280af22 1866 PL_curstash = PL_defstash;
a0d0e21e 1867 FREETMPS;
14dd3ad8 1868 JMPENV_POP;
cc3604b1 1869 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1870 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1871 my_exit_jump();
a0d0e21e 1872 /* NOTREACHED */
6224f72b 1873 case 3:
3280af22 1874 if (PL_restartop) {
533c011a 1875 PL_op = PL_restartop;
3280af22 1876 PL_restartop = 0;
312caa8e 1877 goto redo_body;
a0d0e21e 1878 }
3280af22 1879 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1880 if (flags & G_ARRAY)
1881 retval = 0;
1882 else {
1883 retval = 1;
3280af22 1884 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1885 }
312caa8e 1886 break;
a0d0e21e 1887 }
a0d0e21e 1888
3280af22 1889 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1890 SV **newsp;
1891 PMOP *newpm;
1892 I32 gimme;
c09156bb 1893 register PERL_CONTEXT *cx;
a0a2876f
LW		 1894 I32 optype;
1895
1896 POPBLOCK(cx,newpm);
1897 POPEVAL(cx);
1898 pop_return();
3280af22 1899 PL_curpm = newpm;
a0a2876f 1900 LEAVE;
a0d0e21e 1901 }
14dd3ad8 1902 JMPENV_POP;
a0d0e21e 1903 }
1e422769 1904
a0d0e21e 1905 if (flags & G_DISCARD) {
3280af22 1906 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1907 retval = 0;
1908 FREETMPS;
1909 LEAVE;
1910 }
533c011a 1911 PL_op = oldop;
a0d0e21e
LW		 1912 return retval;
1913}
1914
14dd3ad8 1915#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1916STATIC void *
14dd3ad8 1917S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1918{
1919 OP *myop = va_arg(args, OP*);
1920 int is_eval = va_arg(args, int);
1921
14dd3ad8 1922 call_body(myop, is_eval);
312caa8e
CS		 1923 return NULL;
1924}
14dd3ad8 1925#endif
312caa8e
CS		 1926
1927STATIC void
14dd3ad8 1928S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1929{
312caa8e
CS		 1930 if (PL_op == myop) {
1931 if (is_eval)
f807eda9 1932 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1933 else
f807eda9 1934 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1935 }
1936 if (PL_op)
cea2e8a9 1937 CALLRUNOPS(aTHX);
312caa8e
CS		 1938}
1939
6e72f9df 1940/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1941
954c1994
GS		 1942/*
1943=for apidoc p||eval_sv
1944
1945Tells Perl to C<eval> the string in the SV.
1946
1947=cut
1948*/
1949
a0d0e21e 1950I32
864dbfa3 1951Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1952
8ac85365 1953 /* See G_* flags in cop.h */
a0d0e21e 1954{
924508f0 1955 dSP;
a0d0e21e 1956 UNOP myop; /* fake syntax tree node */
8fa7f367 1957 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1958 volatile I32 retval = 0;
4633a7c4 1959 I32 oldscope;
6224f72b 1960 int ret;
533c011a 1961 OP* oldop = PL_op;
db36c5a1 1962 dJMPENV;
84902520 1963
4633a7c4
LW		 1964 if (flags & G_DISCARD) {
1965 ENTER;
1966 SAVETMPS;
1967 }
1968
462e5cf6 1969 SAVEOP();
533c011a
NIS		 1970 PL_op = (OP*)&myop;
1971 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1972 EXTEND(PL_stack_sp, 1);
1973 *++PL_stack_sp = sv;
1974 oldscope = PL_scopestack_ix;
79072805 1975
4633a7c4
LW		 1976 if (!(flags & G_NOARGS))
1977 myop.op_flags = OPf_STACKED;
79072805 1978 myop.op_next = Nullop;
6e72f9df 1979 myop.op_type = OP_ENTEREVAL;
54310121 1980 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1981 (flags & G_ARRAY) ? OPf_WANT_LIST :
1982 OPf_WANT_SCALAR);
6e72f9df 1983 if (flags & G_KEEPERR)
1984 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1985
14dd3ad8 1986#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1987 redo_body:
14dd3ad8 1988 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1989 (OP*)&myop, TRUE);
14dd3ad8
GS		 1990#else
1991 JMPENV_PUSH(ret);
1992#endif
6224f72b
GS		 1993 switch (ret) {
1994 case 0:
14dd3ad8
GS		 1995#ifndef PERL_FLEXIBLE_EXCEPTIONS
1996 redo_body:
1997 call_body((OP*)&myop,TRUE);
1998#endif
312caa8e
CS		 1999 retval = PL_stack_sp - (PL_stack_base + oldmark);
2000 if (!(flags & G_KEEPERR))
2001 sv_setpv(ERRSV,"");
4633a7c4 2002 break;
6224f72b 2003 case 1:
f86702cc 2004 STATUS_ALL_FAILURE;
4633a7c4 2005 /* FALL THROUGH */
6224f72b 2006 case 2:
4633a7c4 2007 /* my_exit() was called */
3280af22 2008 PL_curstash = PL_defstash;
4633a7c4 2009 FREETMPS;
14dd3ad8 2010 JMPENV_POP;
cc3604b1 2011 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2012 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2013 my_exit_jump();
4633a7c4 2014 /* NOTREACHED */
6224f72b 2015 case 3:
3280af22 2016 if (PL_restartop) {
533c011a 2017 PL_op = PL_restartop;
3280af22 2018 PL_restartop = 0;
312caa8e 2019 goto redo_body;
4633a7c4 2020 }
3280af22 2021 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2022 if (flags & G_ARRAY)
2023 retval = 0;
2024 else {
2025 retval = 1;
3280af22 2026 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2027 }
312caa8e 2028 break;
4633a7c4
LW		 2029 }
2030
14dd3ad8 2031 JMPENV_POP;
4633a7c4 2032 if (flags & G_DISCARD) {
3280af22 2033 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2034 retval = 0;
2035 FREETMPS;
2036 LEAVE;
2037 }
533c011a 2038 PL_op = oldop;
4633a7c4
LW		 2039 return retval;
2040}
2041
954c1994
GS		 2042/*
2043=for apidoc p||eval_pv
2044
2045Tells Perl to C<eval> the given string and return an SV* result.
2046
2047=cut
2048*/
2049
137443ea 2050SV*
864dbfa3 2051Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2052{
2053 dSP;
2054 SV* sv = newSVpv(p, 0);
2055
864dbfa3 2056 eval_sv(sv, G_SCALAR);
137443ea 2057 SvREFCNT_dec(sv);
2058
2059 SPAGAIN;
2060 sv = POPs;
2061 PUTBACK;
2062
2d8e6c8d
GS		 2063 if (croak_on_error && SvTRUE(ERRSV)) {
2064 STRLEN n_a;
cea2e8a9 2065 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2066 }
137443ea 2067
2068 return sv;
2069}
2070
4633a7c4
LW		 2071/* Require a module. */
2072
954c1994
GS		 2073/*
2074=for apidoc p||require_pv
2075
7d3fb230
BS		 2076Tells Perl to C<require> the file named by the string argument. It is
2077analogous to the Perl code C<eval "require '$file'">. It's even
2078implemented that way; consider using Perl_load_module instead.
954c1994 2079
7d3fb230 2080=cut */
954c1994 2081
4633a7c4 2082void
864dbfa3 2083Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2084{
d3acc0f7
JP		 2085 SV* sv;
2086 dSP;
e788e7d3 2087 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2088 PUTBACK;
2089 sv = sv_newmortal();
4633a7c4
LW		 2090 sv_setpv(sv, "require '");
2091 sv_catpv(sv, pv);
2092 sv_catpv(sv, "'");
864dbfa3 2093 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2094 SPAGAIN;
2095 POPSTACK;
79072805
LW		 2096}
2097
79072805 2098void
864dbfa3 2099Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2100{
2101 register GV *gv;
2102
155aba94 2103 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2104 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2105}
2106
76e3520e 2107STATIC void
cea2e8a9 2108S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2109{
ab821d7f 2110 /* This message really ought to be max 23 lines.
75c72d73 2111 * Removed -h because the user already knows that option. Others? */
fb73857a 2112
76e3520e 2113 static char *usage_msg[] = {
fb73857a 2114"-0[octal] specify record separator (\\0, if no argument)",
2115"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2116"-C enable native wide character system interfaces",
1950ee41 2117"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2118"-d[:debugger] run program under debugger",
2119"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2120"-e 'command' one line of program (several -e's allowed, omit programfile)",
2121"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2122"-i[extension] edit <> files in place (makes backup if extension supplied)",
2123"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2124"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2125"-[mM][-]module execute `use/no module...' before executing program",
2126"-n assume 'while (<>) { ... }' loop around program",
2127"-p assume loop like -n but print line also, like sed",
2128"-P run program through C preprocessor before compilation",
2129"-s enable rudimentary parsing for switches after programfile",
2130"-S look for programfile using PATH environment variable",
2131"-T enable tainting checks",
2132"-u dump core after parsing program",
fb73857a 2133"-U allow unsafe operations",
aac3bd0d
GS		 2134"-v print version, subversion (includes VERY IMPORTANT perl info)",
2135"-V[:variable] print configuration summary (or a single Config.pm variable)",
2136"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2137"-W enable all warnings",
2138"-X disable all warnings",
fb73857a 2139"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2140"\n",
2141NULL
2142};
76e3520e 2143 char **p = usage_msg;
fb73857a 2144
b0e47665
GS		 2145 PerlIO_printf(PerlIO_stdout(),
2146 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2147 name);
fb73857a 2148 while (*p)
b0e47665 2149 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2150}
2151
79072805
LW		 2152/* This routine handles any switches that can be given during run */
2153
2154char *
864dbfa3 2155Perl_moreswitches(pTHX_ char *s)
79072805 2156{
ba210ebe 2157 STRLEN numlen;
c07a80fd 2158 U32 rschar;
79072805
LW		 2159
2160 switch (*s) {
2161 case '0':
a863c7d1 2162 {
53305cf1
NC		 2163 I32 flags = 0;
2164 numlen = 4;
2165 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2166 SvREFCNT_dec(PL_rs);
c07a80fd 2167 if (rschar & ~((U8)~0))
8bfdd7d9 2168 PL_rs = &PL_sv_undef;
c07a80fd 2169 else if (!rschar && numlen >= 2)
8bfdd7d9 2170 PL_rs = newSVpvn("", 0);
c07a80fd 2171 else {
2172 char ch = rschar;
8bfdd7d9 2173 PL_rs = newSVpvn(&ch, 1);
79072805
LW		 2174 }
2175 return s + numlen;
a863c7d1 2176 }
46487f74
GS		 2177 case 'C':
2178 PL_widesyscalls = TRUE;
2179 s++;
2180 return s;
2304df62 2181 case 'F':
3280af22
NIS		 2182 PL_minus_F = TRUE;
2183 PL_splitstr = savepv(s + 1);
2304df62
AD		 2184 s += strlen(s);
2185 return s;
79072805 2186 case 'a':
3280af22 2187 PL_minus_a = TRUE;
79072805
LW		 2188 s++;
2189 return s;
2190 case 'c':
3280af22 2191 PL_minus_c = TRUE;
79072805
LW		 2192 s++;
2193 return s;
2194 case 'd':
bbce6d69 2195 forbid_setid("-d");
4633a7c4 2196 s++;
70c94a19
RR		 2197 /* The following permits -d:Mod to accepts arguments following an =
2198 in the fashion that -MSome::Mod does. */
2199 if (*s == ':' || *s == '=') {
2200 char *start;
2201 SV *sv;
2202 sv = newSVpv("use Devel::", 0);
2203 start = ++s;
2204 /* We now allow -d:Module=Foo,Bar */
2205 while(isALNUM(*s) || *s==':') ++s;
2206 if (*s != '=')
2207 sv_catpv(sv, start);
2208 else {
2209 sv_catpvn(sv, start, s-start);
2210 sv_catpv(sv, " split(/,/,q{");
2211 sv_catpv(sv, ++s);
2212 sv_catpv(sv, "})");
2213 }
4633a7c4 2214 s += strlen(s);
70c94a19 2215 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2216 }
ed094faf 2217 if (!PL_perldb) {
3280af22 2218 PL_perldb = PERLDB_ALL;
a0d0e21e 2219 init_debugger();
ed094faf 2220 }
79072805
LW		 2221 return s;
2222 case 'D':
0453d815 2223 {
79072805 2224#ifdef DEBUGGING
bbce6d69 2225 forbid_setid("-D");
79072805 2226 if (isALPHA(s[1])) {
04932ac8
DM		 2227 /* if adding extra options, remember to update DEBUG_MASK */
2228 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2229 char *d;
2230
93a17b20 2231 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2232 PL_debug |= 1 << (d - debopts);
79072805
LW		 2233 }
2234 else {
3280af22 2235 PL_debug = atoi(s+1);
79072805
LW		 2236 for (s++; isDIGIT(*s); s++) ;
2237 }
aea4f609 2238 PL_debug |= DEBUG_TOP_FLAG;
79072805 2239#else
0453d815
PM		 2240 if (ckWARN_d(WARN_DEBUGGING))
2241 Perl_warner(aTHX_ WARN_DEBUGGING,
2242 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2243 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2244#endif
2245 /*SUPPRESS 530*/
2246 return s;
0453d815 2247 }
4633a7c4 2248 case 'h':
ac27b0f5 2249 usage(PL_origargv[0]);
6ad3d225 2250 PerlProc_exit(0);
79072805 2251 case 'i':
3280af22
NIS		 2252 if (PL_inplace)
2253 Safefree(PL_inplace);
2254 PL_inplace = savepv(s+1);
79072805 2255 /*SUPPRESS 530*/
3280af22 2256 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2257 if (*s) {
fb73857a 2258 *s++ = '\0';
7b8d334a
GS		 2259 if (*s == '-') /* Additional switches on #! line. */
2260 s++;
2261 }
fb73857a 2262 return s;
2263 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2264 forbid_setid("-I");
fb73857a 2265 ++s;
2266 while (*s && isSPACE(*s))
2267 ++s;
2268 if (*s) {
774d564b 2269 char *e, *p;
0df16ed7
GS		 2270 p = s;
2271 /* ignore trailing spaces (possibly followed by other switches) */
2272 do {
2273 for (e = p; *e && !isSPACE(*e); e++) ;
2274 p = e;
2275 while (isSPACE(*p))
2276 p++;
2277 } while (*p && *p != '-');
2278 e = savepvn(s, e-s);
9c8a64f0 2279 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2280 Safefree(e);
2281 s = p;
2282 if (*s == '-')
2283 s++;
79072805
LW		 2284 }
2285 else
a67e862a 2286 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2287 return s;
79072805 2288 case 'l':
3280af22 2289 PL_minus_l = TRUE;
79072805 2290 s++;
7889fe52
NIS		 2291 if (PL_ors_sv) {
2292 SvREFCNT_dec(PL_ors_sv);
2293 PL_ors_sv = Nullsv;
2294 }
79072805 2295 if (isDIGIT(*s)) {
53305cf1 2296 I32 flags = 0;
7889fe52 2297 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2298 numlen = 3 + (*s == '0');
2299 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2300 s += numlen;
2301 }
2302 else {
8bfdd7d9 2303 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2304 PL_ors_sv = newSVpvn("\n\n",2);
2305 }
2306 else {
8bfdd7d9 2307 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2308 }
79072805
LW		 2309 }
2310 return s;
1a30305b 2311 case 'M':
bbce6d69 2312 forbid_setid("-M"); /* XXX ? */
1a30305b 2313 /* FALL THROUGH */
2314 case 'm':
bbce6d69 2315 forbid_setid("-m"); /* XXX ? */
1a30305b 2316 if (*++s) {
a5f75d66 2317 char *start;
11343788 2318 SV *sv;
a5f75d66
AD		 2319 char *use = "use ";
2320 /* -M-foo == 'no foo' */
2321 if (*s == '-') { use = "no "; ++s; }
11343788 2322 sv = newSVpv(use,0);
a5f75d66 2323 start = s;
1a30305b 2324 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2325 while(isALNUM(*s) || *s==':') ++s;
2326 if (*s != '=') {
11343788 2327 sv_catpv(sv, start);
c07a80fd 2328 if (*(start-1) == 'm') {
2329 if (*s != '\0')
cea2e8a9 2330 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2331 sv_catpv( sv, " ()");
c07a80fd 2332 }
2333 } else {
6df41af2 2334 if (s == start)
be98fb35
GS		 2335 Perl_croak(aTHX_ "Module name required with -%c option",
2336 s[-1]);
11343788
MB		 2337 sv_catpvn(sv, start, s-start);
2338 sv_catpv(sv, " split(/,/,q{");
2339 sv_catpv(sv, ++s);
2340 sv_catpv(sv, "})");
c07a80fd 2341 }
1a30305b 2342 s += strlen(s);
5c831c24 2343 if (!PL_preambleav)
3280af22
NIS		 2344 PL_preambleav = newAV();
2345 av_push(PL_preambleav, sv);
1a30305b 2346 }
2347 else
cea2e8a9 2348 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2349 return s;
79072805 2350 case 'n':
3280af22 2351 PL_minus_n = TRUE;
79072805
LW		 2352 s++;
2353 return s;
2354 case 'p':
3280af22 2355 PL_minus_p = TRUE;
79072805
LW		 2356 s++;
2357 return s;
2358 case 's':
bbce6d69 2359 forbid_setid("-s");
3280af22 2360 PL_doswitches = TRUE;
79072805
LW		 2361 s++;
2362 return s;
463ee0b2 2363 case 'T':
3280af22 2364 if (!PL_tainting)
cea2e8a9 2365 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2366 s++;
2367 return s;
79072805 2368 case 'u':
bf4acbe4
GS		 2369#ifdef MACOS_TRADITIONAL
2370 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2371#endif
3280af22 2372 PL_do_undump = TRUE;
79072805
LW		 2373 s++;
2374 return s;
2375 case 'U':
3280af22 2376 PL_unsafe = TRUE;
79072805
LW		 2377 s++;
2378 return s;
2379 case 'v':
8e9464f1 2380#if !defined(DGUX)
b0e47665 2381 PerlIO_printf(PerlIO_stdout(),
d2560b70 2382 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2383 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2384#else /* DGUX */
2385/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2386 PerlIO_printf(PerlIO_stdout(),
2387 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2388 PerlIO_printf(PerlIO_stdout(),
2389 Perl_form(aTHX_ " built under %s at %s %s\n",
2390 OSNAME, __DATE__, __TIME__));
2391 PerlIO_printf(PerlIO_stdout(),
2392 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2393 OSVERS));
8e9464f1
JH		 2394#endif /* !DGUX */
2395
fb73857a 2396#if defined(LOCAL_PATCH_COUNT)
2397 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2398 PerlIO_printf(PerlIO_stdout(),
2399 "\n(with %d registered patch%s, "
2400 "see perl -V for more detail)",
2401 (int)LOCAL_PATCH_COUNT,
2402 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2403#endif
1a30305b 2404
b0e47665 2405 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2406 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2407#ifdef MACOS_TRADITIONAL
2408 PerlIO_printf(PerlIO_stdout(),
084592ab 2409 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2410#endif
79072805 2411#ifdef MSDOS
b0e47665
GS		 2412 PerlIO_printf(PerlIO_stdout(),
2413 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2414#endif
2415#ifdef DJGPP
b0e47665
GS		 2416 PerlIO_printf(PerlIO_stdout(),
2417 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2418 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2419#endif
79072805 2420#ifdef OS2
b0e47665
GS		 2421 PerlIO_printf(PerlIO_stdout(),
2422 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2423 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2424#endif
79072805 2425#ifdef atarist
b0e47665
GS		 2426 PerlIO_printf(PerlIO_stdout(),
2427 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2428#endif
a3f9223b 2429#ifdef __BEOS__
b0e47665
GS		 2430 PerlIO_printf(PerlIO_stdout(),
2431 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2432#endif
1d84e8df 2433#ifdef MPE
b0e47665 2434 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2435 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2436#endif
9d116dd7 2437#ifdef OEMVS
b0e47665
GS		 2438 PerlIO_printf(PerlIO_stdout(),
2439 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2440#endif
495c5fdc 2441#ifdef __VOS__
b0e47665
GS		 2442 PerlIO_printf(PerlIO_stdout(),
2443 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2444#endif
092bebab 2445#ifdef __OPEN_VM
b0e47665
GS		 2446 PerlIO_printf(PerlIO_stdout(),
2447 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2448#endif
a1a0e61e 2449#ifdef POSIX_BC
b0e47665
GS		 2450 PerlIO_printf(PerlIO_stdout(),
2451 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2452#endif
61ae2fbf 2453#ifdef __MINT__
b0e47665
GS		 2454 PerlIO_printf(PerlIO_stdout(),
2455 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2456#endif
f83d2536 2457#ifdef EPOC
b0e47665
GS		 2458 PerlIO_printf(PerlIO_stdout(),
2459 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2460#endif
e1caacb4
JH		 2461#ifdef UNDER_CE
2462 printf("WINCE port by Rainer Keuchel, 2001\n");
2463 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2464 wce_hitreturn();
2465#endif
baed7233
DL		 2466#ifdef BINARY_BUILD_NOTICE
2467 BINARY_BUILD_NOTICE;
2468#endif
b0e47665
GS		 2469 PerlIO_printf(PerlIO_stdout(),
2470 "\n\
79072805 2471Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2472GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2473Complete documentation for Perl, including FAQ lists, should be found on\n\
2474this system using `man perl' or `perldoc perl'. If you have access to the\n\
2475Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2476 PerlProc_exit(0);
79072805 2477 case 'w':
599cee73 2478 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2479 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2480 s++;
2481 return s;
2482 case 'W':
ac27b0f5 2483 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2484 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2485 s++;
2486 return s;
2487 case 'X':
ac27b0f5 2488 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2489 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2490 s++;
2491 return s;
a0d0e21e 2492 case '*':
79072805
LW		 2493 case ' ':
2494 if (s[1] == '-') /* Additional switches on #! line. */
2495 return s+2;
2496 break;
a0d0e21e 2497 case '-':
79072805 2498 case 0:
51882d45 2499#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2500 case '\r':
2501#endif
79072805
LW		 2502 case '\n':
2503 case '\t':
2504 break;
aa689395 2505#ifdef ALTERNATE_SHEBANG
2506 case 'S': /* OS/2 needs -S on "extproc" line. */
2507 break;
2508#endif
a0d0e21e 2509 case 'P':
3280af22 2510 if (PL_preprocess)
a0d0e21e
LW		 2511 return s+1;
2512 /* FALL THROUGH */
79072805 2513 default:
cea2e8a9 2514 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2515 }
2516 return Nullch;
2517}
2518
2519/* compliments of Tom Christiansen */
2520
2521/* unexec() can be found in the Gnu emacs distribution */
ee580363 2522/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2523
2524void
864dbfa3 2525Perl_my_unexec(pTHX)
79072805
LW		 2526{
2527#ifdef UNEXEC
46fc3d4c 2528 SV* prog;
2529 SV* file;
ee580363 2530 int status = 1;
79072805
LW		 2531 extern int etext;
2532
ee580363 2533 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2534 sv_catpv(prog, "/perl");
6b88bc9c 2535 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2536 sv_catpv(file, ".perldump");
79072805 2537
ee580363
GS		 2538 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2539 /* unexec prints msg to stderr in case of failure */
6ad3d225 2540 PerlProc_exit(status);
79072805 2541#else
a5f75d66
AD		 2542# ifdef VMS
2543# include <lib$routines.h>
2544 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2545# else
79072805 2546 ABORT(); /* for use with undump */
aa689395 2547# endif
a5f75d66 2548#endif
79072805
LW		 2549}
2550
cb68f92d
GS		 2551/* initialize curinterp */
2552STATIC void
cea2e8a9 2553S_init_interp(pTHX)
cb68f92d
GS		 2554{
2555
acfe0abc
GS		 2556#ifdef MULTIPLICITY
2557# define PERLVAR(var,type)
2558# define PERLVARA(var,n,type)
2559# if defined(PERL_IMPLICIT_CONTEXT)
2560# if defined(USE_5005THREADS)
2561# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2562# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2563# else /* !USE_5005THREADS */
2564# define PERLVARI(var,type,init) aTHX->var = init;
2565# define PERLVARIC(var,type,init) aTHX->var = init;
2566# endif /* USE_5005THREADS */
3967c732 2567# else
acfe0abc
GS		 2568# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2569# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2570# endif
acfe0abc
GS		 2571# include "intrpvar.h"
2572# ifndef USE_5005THREADS
2573# include "thrdvar.h"
2574# endif
2575# undef PERLVAR
2576# undef PERLVARA
2577# undef PERLVARI
2578# undef PERLVARIC
2579#else
2580# define PERLVAR(var,type)
2581# define PERLVARA(var,n,type)
2582# define PERLVARI(var,type,init) PL_##var = init;
2583# define PERLVARIC(var,type,init) PL_##var = init;
2584# include "intrpvar.h"
2585# ifndef USE_5005THREADS
2586# include "thrdvar.h"
2587# endif
2588# undef PERLVAR
2589# undef PERLVARA
2590# undef PERLVARI
2591# undef PERLVARIC
cb68f92d
GS		 2592#endif
2593
cb68f92d
GS		 2594}
2595
76e3520e 2596STATIC void
cea2e8a9 2597S_init_main_stash(pTHX)
79072805 2598{
463ee0b2 2599 GV *gv;
6e72f9df 2600
3d47000e 2601
ac27b0f5 2602
3280af22 2603 PL_curstash = PL_defstash = newHV();
79cb57f6 2604 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2605 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2606 SvREFCNT_dec(GvHV(gv));
3280af22 2607 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2608 SvREADONLY_on(gv);
3280af22
NIS		 2609 HvNAME(PL_defstash) = savepv("main");
2610 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2611 GvMULTI_on(PL_incgv);
2612 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2613 GvMULTI_on(PL_hintgv);
2614 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2615 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2616 GvMULTI_on(PL_errgv);
2617 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2618 GvMULTI_on(PL_replgv);
cea2e8a9 2619 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2620 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2621 sv_setpvn(ERRSV, "", 0);
3280af22 2622 PL_curstash = PL_defstash;
11faa288 2623 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2624 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2625 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2626 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2627 /* We must init $/ before switches are processed. */
864dbfa3 2628 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2629}
2630
76e3520e 2631STATIC void
cea2e8a9 2632S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2633{
6c4ab083 2634 *fdscript = -1;
79072805 2635
3280af22
NIS		 2636 if (PL_e_script) {
2637 PL_origfilename = savepv("-e");
96436eeb 2638 }
6c4ab083
GS		 2639 else {
2640 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2641 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2642
2643 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2644 char *s = scriptname + 8;
2645 *fdscript = atoi(s);
2646 while (isDIGIT(*s))
2647 s++;
2648 if (*s) {
2649 scriptname = savepv(s + 1);
3280af22
NIS		 2650 Safefree(PL_origfilename);
2651 PL_origfilename = scriptname;
6c4ab083
GS		 2652 }
2653 }
2654 }
2655
f4dd75d9
GS		 2656#ifdef USE_ITHREADS
2657 Safefree(CopFILE(PL_curcop));
2658#else
2659 SvREFCNT_dec(CopFILEGV(PL_curcop));
2660#endif
57843af0 2661 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2662 if (strEQ(PL_origfilename,"-"))
79072805 2663 scriptname = "";
01f988be 2664 if (*fdscript >= 0) {
3280af22 2665 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2666#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2667 if (PL_rsfp)
2668 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2669#endif
2670 }
3280af22 2671 else if (PL_preprocess) {
46fc3d4c 2672 char *cpp_cfg = CPPSTDIN;
79cb57f6 2673 SV *cpp = newSVpvn("",0);
46fc3d4c 2674 SV *cmd = NEWSV(0,0);
2675
2676 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2677 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2678 sv_catpv(cpp, cpp_cfg);
79072805 2679
0df16ed7 2680 sv_catpvn(sv, "-I", 2);
fed7345c 2681 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2682
14953ddc
MB		 2683 DEBUG_P(PerlIO_printf(Perl_debug_log,
2684 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2685 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2686#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2687 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2688sed %s -e \"/^[^#]/b\" \
2689 -e \"/^#[ ]*include[ ]/b\" \
2690 -e \"/^#[ ]*define[ ]/b\" \
2691 -e \"/^#[ ]*if[ ]/b\" \
2692 -e \"/^#[ ]*ifdef[ ]/b\" \
2693 -e \"/^#[ ]*ifndef[ ]/b\" \
2694 -e \"/^#[ ]*else/b\" \
2695 -e \"/^#[ ]*elif[ ]/b\" \
2696 -e \"/^#[ ]*undef[ ]/b\" \
2697 -e \"/^#[ ]*endif/b\" \
2698 -e \"s/^#.*//\" \
894356b3 2699 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2700 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2701#else
092bebab 2702# ifdef __OPEN_VM
cea2e8a9 2703 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2704%s %s -e '/^[^#]/b' \
2705 -e '/^#[ ]*include[ ]/b' \
2706 -e '/^#[ ]*define[ ]/b' \
2707 -e '/^#[ ]*if[ ]/b' \
2708 -e '/^#[ ]*ifdef[ ]/b' \
2709 -e '/^#[ ]*ifndef[ ]/b' \
2710 -e '/^#[ ]*else/b' \
2711 -e '/^#[ ]*elif[ ]/b' \
2712 -e '/^#[ ]*undef[ ]/b' \
2713 -e '/^#[ ]*endif/b' \
2714 -e 's/^[ ]*#.*//' \
894356b3 2715 %s | %"SVf" %"SVf" %s",
092bebab 2716# else
cea2e8a9 2717 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2718%s %s -e '/^[^#]/b' \
2719 -e '/^#[ ]*include[ ]/b' \
2720 -e '/^#[ ]*define[ ]/b' \
2721 -e '/^#[ ]*if[ ]/b' \
2722 -e '/^#[ ]*ifdef[ ]/b' \
2723 -e '/^#[ ]*ifndef[ ]/b' \
2724 -e '/^#[ ]*else/b' \
2725 -e '/^#[ ]*elif[ ]/b' \
2726 -e '/^#[ ]*undef[ ]/b' \
2727 -e '/^#[ ]*endif/b' \
2728 -e 's/^[ ]*#.*//' \
894356b3 2729 %s | %"SVf" -C %"SVf" %s",
092bebab 2730# endif
79072805
LW		 2731#ifdef LOC_SED
2732 LOC_SED,
2733#else
2734 "sed",
2735#endif
3280af22 2736 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2737#endif
46fc3d4c 2738 scriptname, cpp, sv, CPPMINUS);
3280af22 2739 PL_doextract = FALSE;
79072805 2740#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2741 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2742#ifdef HAS_SETEUID
b28d0864 2743 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2744#else
2745#ifdef HAS_SETREUID
b28d0864 2746 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2747#else
2748#ifdef HAS_SETRESUID
b28d0864 2749 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2750#else
b28d0864 2751 PerlProc_setuid(PL_uid);
79072805
LW		 2752#endif
2753#endif
85e6fe83 2754#endif
b28d0864 2755 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2756 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2757 }
2758#endif /* IAMSUID */
3280af22 2759 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2760 SvREFCNT_dec(cmd);
2761 SvREFCNT_dec(cpp);
79072805
LW		 2762 }
2763 else if (!*scriptname) {
bbce6d69 2764 forbid_setid("program input from stdin");
3280af22 2765 PL_rsfp = PerlIO_stdin();
79072805 2766 }
96436eeb 2767 else {
3280af22 2768 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2769#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2770 if (PL_rsfp)
2771 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2772#endif
2773 }
3280af22 2774 if (!PL_rsfp) {
13281fa4 2775#ifdef DOSUID
a687059c 2776#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2777 if (PL_euid &&
cc49e20b 2778 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2779 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2780 {
46fc3d4c 2781 /* try again */
a7cb1f99 2782 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2783 (int)PERL_REVISION, (int)PERL_VERSION,
2784 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2785 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2786 }
2787#endif
2788#endif
584d69ec
JH		 2789#ifdef IAMSUID
2790 errno = EPERM;
2791 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2792 Strerror(errno));
2793#else
cea2e8a9 2794 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2795 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2796#endif
13281fa4 2797 }
79072805 2798}
8d063cd8 2799
7b89560d
JH		 2800/* Mention
2801 * I_SYSSTATVFS HAS_FSTATVFS
2802 * I_SYSMOUNT
c890dc6c 2803 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2804 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2805 * here so that metaconfig picks them up. */
2806
104d25b7 2807#ifdef IAMSUID
864dbfa3 2808STATIC int
e688b231 2809S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2810{
0545a864
JH		 2811 int check_okay = 0; /* able to do all the required sys/libcalls */
2812 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2813/*
ad27e871 2814 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2815 * fstatvfs() is UNIX98.
0545a864 2816 * fstatfs() is 4.3 BSD.
ad27e871 2817 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2818 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2819 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2820 */
2821
6439433f
JH		 2822#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2823
2824# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2825 defined(HAS_FSTATVFS)
2826# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2827 struct statvfs stfs;
6439433f 2828
104d25b7
JH		 2829 check_okay = fstatvfs(fd, &stfs) == 0;
2830 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2831# endif /* fstatvfs */
ac27b0f5 2832
6439433f
JH		 2833# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2834 defined(PERL_MOUNT_NOSUID) && \
2835 defined(HAS_FSTATFS) && \
2836 defined(HAS_STRUCT_STATFS) && \
2837 defined(HAS_STRUCT_STATFS_F_FLAGS)
2838# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2839 struct statfs stfs;
6439433f 2840
104d25b7 2841 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2842 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2843# endif /* fstatfs */
2844
2845# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2846 defined(PERL_MOUNT_NOSUID) && \
2847 defined(HAS_FSTAT) && \
2848 defined(HAS_USTAT) && \
2849 defined(HAS_GETMNT) && \
2850 defined(HAS_STRUCT_FS_DATA) && \
2851 defined(NOSTAT_ONE)
2852# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2853 struct stat fdst;
6439433f 2854
0545a864 2855 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2856 struct ustat us;
2857 if (ustat(fdst.st_dev, &us) == 0) {
2858 struct fs_data fsd;
2859 /* NOSTAT_ONE here because we're not examining fields which
2860 * vary between that case and STAT_ONE. */
ad27e871 2861 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2862 size_t cmplen = sizeof(us.f_fname);
2863 if (sizeof(fsd.fd_req.path) < cmplen)
2864 cmplen = sizeof(fsd.fd_req.path);
2865 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2866 fdst.st_dev == fsd.fd_req.dev) {
2867 check_okay = 1;
2868 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2869 }
2870 }
2871 }
2872 }
0545a864 2873 }
6439433f
JH		 2874# endif /* fstat+ustat+getmnt */
2875
2876# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2877 defined(HAS_GETMNTENT) && \
2878 defined(HAS_HASMNTOPT) && \
2879 defined(MNTOPT_NOSUID)
2880# define FD_ON_NOSUID_CHECK_OKAY
2881 FILE *mtab = fopen("/etc/mtab", "r");
2882 struct mntent *entry;
2883 struct stat stb, fsb;
104d25b7
JH		 2884
2885 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2886 while (entry = getmntent(mtab)) {
2887 if (stat(entry->mnt_dir, &fsb) == 0
2888 && fsb.st_dev == stb.st_dev)
2889 {
2890 /* found the filesystem */
2891 check_okay = 1;
2892 if (hasmntopt(entry, MNTOPT_NOSUID))
2893 on_nosuid = 1;
2894 break;
2895 } /* A single fs may well fail its stat(). */
2896 }
104d25b7
JH		 2897 }
2898 if (mtab)
6439433f
JH		 2899 fclose(mtab);
2900# endif /* getmntent+hasmntopt */
0545a864 2901
ac27b0f5 2902 if (!check_okay)
0545a864 2903 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2904 return on_nosuid;
2905}
2906#endif /* IAMSUID */
2907
76e3520e 2908STATIC void
cea2e8a9 2909S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2910{
155aba94 2911#ifdef IAMSUID
96436eeb 2912 int which;
155aba94 2913#endif
96436eeb 2914
13281fa4
LW		 2915 /* do we need to emulate setuid on scripts? */
2916
2917 /* This code is for those BSD systems that have setuid #! scripts disabled
2918 * in the kernel because of a security problem. Merely defining DOSUID
2919 * in perl will not fix that problem, but if you have disabled setuid
2920 * scripts in the kernel, this will attempt to emulate setuid and setgid
2921 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2922 * root version must be called suidperl or sperlN.NNN. If regular perl
2923 * discovers that it has opened a setuid script, it calls suidperl with
2924 * the same argv that it had. If suidperl finds that the script it has
2925 * just opened is NOT setuid root, it sets the effective uid back to the
2926 * uid. We don't just make perl setuid root because that loses the
2927 * effective uid we had before invoking perl, if it was different from the
2928 * uid.
13281fa4
LW		 2929 *
2930 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2931 * be defined in suidperl only. suidperl must be setuid root. The
2932 * Configure script will set this up for you if you want it.
2933 */
a687059c 2934
13281fa4 2935#ifdef DOSUID
6e72f9df 2936 char *s, *s2;
a0d0e21e 2937
b28d0864 2938 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2939 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2940 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2941 I32 len;
2d8e6c8d 2942 STRLEN n_a;
13281fa4 2943
a687059c 2944#ifdef IAMSUID
fe14fcc3 2945#ifndef HAS_SETREUID
a687059c
LW		 2946 /* On this access check to make sure the directories are readable,
2947 * there is actually a small window that the user could use to make
2948 * filename point to an accessible directory. So there is a faint
2949 * chance that someone could execute a setuid script down in a
2950 * non-accessible directory. I don't know what to do about that.
2951 * But I don't think it's too important. The manual lies when
2952 * it says access() is useful in setuid programs.
2953 */
cc49e20b 2954 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2955 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2956#else
2957 /* If we can swap euid and uid, then we can determine access rights
2958 * with a simple stat of the file, and then compare device and
2959 * inode to make sure we did stat() on the same file we opened.
2960 * Then we just have to make sure he or she can execute it.
2961 */
2962 {
2963 struct stat tmpstatbuf;
2964
85e6fe83
LW		 2965 if (
2966#ifdef HAS_SETREUID
b28d0864 2967 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2968#else
2969# if HAS_SETRESUID
b28d0864 2970 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2971# endif
85e6fe83 2972#endif
b28d0864 2973 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2974 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2975 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2976 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2977#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2978 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2979 Perl_croak(aTHX_ "Permission denied");
104d25b7 2980#endif
b28d0864
NIS		 2981 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2982 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2983 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2984 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2985 }
85e6fe83
LW		 2986 if (
2987#ifdef HAS_SETREUID
b28d0864 2988 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2989#else
2990# if defined(HAS_SETRESUID)
b28d0864 2991 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2992# endif
85e6fe83 2993#endif
b28d0864 2994 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2995 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2996 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2997 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2998 }
fe14fcc3 2999#endif /* HAS_SETREUID */
a687059c
LW		 3000#endif /* IAMSUID */
3001
b28d0864 3002 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3003 Perl_croak(aTHX_ "Permission denied");
b28d0864 3004 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3005 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3006 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3007 CopLINE_inc(PL_curcop);
6b88bc9c 3008 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3009 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3010 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3011 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3012 if (*s == ' ') s++;
45d8adaa 3013 while (!isSPACE(*s)) s++;
2d8e6c8d 3014 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3015 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3016 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3017 Perl_croak(aTHX_ "Not a perl script");
a687059c 3018 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3019 /*
3020 * #! arg must be what we saw above. They can invoke it by
3021 * mentioning suidperl explicitly, but they may not add any strange
3022 * arguments beyond what #! says if they do invoke suidperl that way.
3023 */
3024 len = strlen(validarg);
3025 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3026 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3027 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3028
3029#ifndef IAMSUID
b28d0864
NIS		 3030 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3031 PL_euid == PL_statbuf.st_uid)
3032 if (!PL_do_undump)
cea2e8a9 3033 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3034FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3035#endif /* IAMSUID */
13281fa4 3036
b28d0864
NIS		 3037 if (PL_euid) { /* oops, we're not the setuid root perl */
3038 (void)PerlIO_close(PL_rsfp);
13281fa4 3039#ifndef IAMSUID
46fc3d4c 3040 /* try again */
a7cb1f99 3041 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3042 (int)PERL_REVISION, (int)PERL_VERSION,
3043 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3044#endif
cea2e8a9 3045 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3046 }
3047
b28d0864 3048 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3049#ifdef HAS_SETEGID
b28d0864 3050 (void)setegid(PL_statbuf.st_gid);
a687059c 3051#else
fe14fcc3 3052#ifdef HAS_SETREGID
b28d0864 3053 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3054#else
3055#ifdef HAS_SETRESGID
b28d0864 3056 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3057#else
b28d0864 3058 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3059#endif
3060#endif
85e6fe83 3061#endif
b28d0864 3062 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3063 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3064 }
b28d0864
NIS		 3065 if (PL_statbuf.st_mode & S_ISUID) {
3066 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3067#ifdef HAS_SETEUID
b28d0864 3068 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3069#else
fe14fcc3 3070#ifdef HAS_SETREUID
b28d0864 3071 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3072#else
3073#ifdef HAS_SETRESUID
b28d0864 3074 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3075#else
b28d0864 3076 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3077#endif
3078#endif
85e6fe83 3079#endif
b28d0864 3080 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3081 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3082 }
b28d0864 3083 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3084#ifdef HAS_SETEUID
b28d0864 3085 (void)seteuid((Uid_t)PL_uid);
a687059c 3086#else
fe14fcc3 3087#ifdef HAS_SETREUID
b28d0864 3088 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3089#else
85e6fe83 3090#ifdef HAS_SETRESUID
b28d0864 3091 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3092#else
b28d0864 3093 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3094#endif
a687059c
LW		 3095#endif
3096#endif
b28d0864 3097 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3098 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3099 }
748a9306 3100 init_ids();
b28d0864 3101 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3102 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3103 }
3104#ifdef IAMSUID
6b88bc9c 3105 else if (PL_preprocess)
cea2e8a9 3106 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3107 else if (fdscript >= 0)
cea2e8a9 3108 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3109 else
cea2e8a9 3110 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3111
3112 /* We absolutely must clear out any saved ids here, so we */
3113 /* exec the real perl, substituting fd script for scriptname. */
3114 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3115 PerlIO_rewind(PL_rsfp);
3116 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3117 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3118 if (!PL_origargv[which])
cea2e8a9
GS		 3119 Perl_croak(aTHX_ "Permission denied");
3120 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3121 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3122#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3123 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3124#endif
a7cb1f99 3125 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3126 (int)PERL_REVISION, (int)PERL_VERSION,
3127 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3128 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3129#endif /* IAMSUID */
a687059c 3130#else /* !DOSUID */
3280af22 3131 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3132#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3133 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3134 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3135 ||
b28d0864 3136 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3137 )
b28d0864 3138 if (!PL_do_undump)
cea2e8a9 3139 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3140FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3141#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3142 /* not set-id, must be wrapped */
a687059c 3143 }
13281fa4 3144#endif /* DOSUID */
79072805 3145}
13281fa4 3146
76e3520e 3147STATIC void
cea2e8a9 3148S_find_beginning(pTHX)
79072805 3149{
6e72f9df 3150 register char *s, *s2;
33b78306
LW		 3151
3152 /* skip forward in input to the real script? */
3153
bbce6d69 3154 forbid_setid("-x");
bf4acbe4 3155#ifdef MACOS_TRADITIONAL
084592ab 3156 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3157
bf4acbe4
GS		 3158 while (PL_doextract || gMacPerl_AlwaysExtract) {
3159 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3160 if (!gMacPerl_AlwaysExtract)
3161 Perl_croak(aTHX_ "No Perl script found in input\n");
3162
3163 if (PL_doextract) /* require explicit override ? */
3164 if (!OverrideExtract(PL_origfilename))
3165 Perl_croak(aTHX_ "User aborted script\n");
3166 else
3167 PL_doextract = FALSE;
3168
3169 /* Pater peccavi, file does not have #! */
3170 PerlIO_rewind(PL_rsfp);
ac27b0f5 3171
bf4acbe4
GS		 3172 break;
3173 }
3174#else
3280af22
NIS		 3175 while (PL_doextract) {
3176 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3177 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3178#endif
4f0c37ba
IZ		 3179 s2 = s;
3180 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3181 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3182 PL_doextract = FALSE;
6e72f9df 3183 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3184 s2 = s;
3185 while (*s == ' ' || *s == '\t') s++;
3186 if (*s++ == '-') {
3187 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3188 if (strnEQ(s2-4,"perl",4))
3189 /*SUPPRESS 530*/
155aba94
GS		 3190 while ((s = moreswitches(s)))
3191 ;
33b78306 3192 }
95e8664e
CN		 3193#ifdef MACOS_TRADITIONAL
3194 break;
3195#endif
83025b21
LW		 3196 }
3197 }
3198}
3199
afe37c7d 3200
76e3520e 3201STATIC void
cea2e8a9 3202S_init_ids(pTHX)
352d5a3a 3203{
d8eceb89
JH		 3204 PL_uid = PerlProc_getuid();
3205 PL_euid = PerlProc_geteuid();
3206 PL_gid = PerlProc_getgid();
3207 PL_egid = PerlProc_getegid();
748a9306 3208#ifdef VMS
b28d0864
NIS		 3209 PL_uid |= PL_gid << 16;
3210 PL_euid |= PL_egid << 16;
748a9306 3211#endif
3280af22 3212 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3213}
79072805 3214
76e3520e 3215STATIC void
cea2e8a9 3216S_forbid_setid(pTHX_ char *s)
bbce6d69 3217{
3280af22 3218 if (PL_euid != PL_uid)
cea2e8a9 3219 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3220 if (PL_egid != PL_gid)
cea2e8a9 3221 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3222}
3223
1ee4443e
IZ		 3224void
3225Perl_init_debugger(pTHX)
748a9306 3226{
1ee4443e
IZ		 3227 HV *ostash = PL_curstash;
3228
3280af22
NIS		 3229 PL_curstash = PL_debstash;
3230 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3231 AvREAL_off(PL_dbargs);
3232 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3233 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3234 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3235 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3236 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3237 sv_setiv(PL_DBsingle, 0);
3280af22 3238 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3239 sv_setiv(PL_DBtrace, 0);
3280af22 3240 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3241 sv_setiv(PL_DBsignal, 0);
1ee4443e 3242 PL_curstash = ostash;
352d5a3a
LW		 3243}
3244
2ce36478
SM		 3245#ifndef STRESS_REALLOC
3246#define REASONABLE(size) (size)
3247#else
3248#define REASONABLE(size) (1) /* unreasonable */
3249#endif
3250
11343788 3251void
cea2e8a9 3252Perl_init_stacks(pTHX)
79072805 3253{
e336de0d 3254 /* start with 128-item stack and 8K cxstack */
3280af22 3255 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3256 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3257 PL_curstackinfo->si_type = PERLSI_MAIN;
3258 PL_curstack = PL_curstackinfo->si_stack;
3259 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3260
3280af22
NIS		 3261 PL_stack_base = AvARRAY(PL_curstack);
3262 PL_stack_sp = PL_stack_base;
3263 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3264
3280af22
NIS		 3265 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3266 PL_tmps_floor = -1;
3267 PL_tmps_ix = -1;
3268 PL_tmps_max = REASONABLE(128);
8990e307 3269
3280af22
NIS		 3270 New(54,PL_markstack,REASONABLE(32),I32);
3271 PL_markstack_ptr = PL_markstack;
3272 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3273
ce2f7c3b 3274 SET_MARK_OFFSET;
e336de0d 3275
3280af22
NIS		 3276 New(54,PL_scopestack,REASONABLE(32),I32);
3277 PL_scopestack_ix = 0;
3278 PL_scopestack_max = REASONABLE(32);
79072805 3279
3280af22
NIS		 3280 New(54,PL_savestack,REASONABLE(128),ANY);
3281 PL_savestack_ix = 0;
3282 PL_savestack_max = REASONABLE(128);
79072805 3283
3280af22
NIS		 3284 New(54,PL_retstack,REASONABLE(16),OP*);
3285 PL_retstack_ix = 0;
3286 PL_retstack_max = REASONABLE(16);
378cc40b 3287}
33b78306 3288
2ce36478
SM		 3289#undef REASONABLE
3290
76e3520e 3291STATIC void
cea2e8a9 3292S_nuke_stacks(pTHX)
6e72f9df 3293{
3280af22
NIS		 3294 while (PL_curstackinfo->si_next)
3295 PL_curstackinfo = PL_curstackinfo->si_next;
3296 while (PL_curstackinfo) {
3297 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3298 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3299 Safefree(PL_curstackinfo->si_cxstack);
3300 Safefree(PL_curstackinfo);
3301 PL_curstackinfo = p;
e336de0d 3302 }
3280af22
NIS		 3303 Safefree(PL_tmps_stack);
3304 Safefree(PL_markstack);
3305 Safefree(PL_scopestack);
3306 Safefree(PL_savestack);
3307 Safefree(PL_retstack);
378cc40b 3308}
33b78306 3309
76e3520e 3310STATIC void
cea2e8a9 3311S_init_lexer(pTHX)
8990e307 3312{
06039172 3313 PerlIO *tmpfp;
3280af22
NIS		 3314 tmpfp = PL_rsfp;
3315 PL_rsfp = Nullfp;
3316 lex_start(PL_linestr);
3317 PL_rsfp = tmpfp;
79cb57f6 3318 PL_subname = newSVpvn("main",4);
8990e307
LW		 3319}
3320
76e3520e 3321STATIC void
cea2e8a9 3322S_init_predump_symbols(pTHX)
45d8adaa 3323{
93a17b20 3324 GV *tmpgv;
af8c498a 3325 IO *io;
79072805 3326
864dbfa3 3327 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3328 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3329 GvMULTI_on(PL_stdingv);
af8c498a 3330 io = GvIOp(PL_stdingv);
a04651f4 3331 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3332 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3333 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3334 GvMULTI_on(tmpgv);
af8c498a 3335 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3336
85e6fe83 3337 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3338 GvMULTI_on(tmpgv);
af8c498a 3339 io = GvIOp(tmpgv);
a04651f4 3340 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3341 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3342 setdefout(tmpgv);
adbc6bb1 3343 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3344 GvMULTI_on(tmpgv);
af8c498a 3345 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3346
bf49b057
GS		 3347 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3348 GvMULTI_on(PL_stderrgv);
3349 io = GvIOp(PL_stderrgv);
a04651f4 3350 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3351 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3352 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3353 GvMULTI_on(tmpgv);
af8c498a 3354 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3355
3280af22 3356 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3357
bf4acbe4
GS		 3358 if (PL_osname)
3359 Safefree(PL_osname);
3360 PL_osname = savepv(OSNAME);
79072805 3361}
33b78306 3362
76e3520e 3363STATIC void
cea2e8a9 3364S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3365{
79072805
LW		 3366 char *s;
3367 SV *sv;
3368 GV* tmpgv;
9cbac4c7 3369#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3370 char **dup_env_base = 0;
103a7189 3371 int dup_env_count = 0;
9cbac4c7 3372#endif
fe14fcc3 3373
79072805 3374 argc--,argv++; /* skip name of script */
3280af22 3375 if (PL_doswitches) {
79072805
LW		 3376 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3377 if (!argv[0][1])
3378 break;
379d538a 3379 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3380 argc--,argv++;
3381 break;
3382 }
155aba94 3383 if ((s = strchr(argv[0], '='))) {
79072805 3384 *s++ = '\0';
85e6fe83 3385 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3386 }
3387 else
85e6fe83 3388 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3389 }
79072805 3390 }
3280af22
NIS		 3391 PL_toptarget = NEWSV(0,0);
3392 sv_upgrade(PL_toptarget, SVt_PVFM);
3393 sv_setpvn(PL_toptarget, "", 0);
3394 PL_bodytarget = NEWSV(0,0);
3395 sv_upgrade(PL_bodytarget, SVt_PVFM);
3396 sv_setpvn(PL_bodytarget, "", 0);
3397 PL_formtarget = PL_bodytarget;
79072805 3398
bbce6d69 3399 TAINT;
155aba94 3400 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3401#ifdef MACOS_TRADITIONAL
3402 /* $0 is not majick on a Mac */
3403 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3404#else
3280af22 3405 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3406 magicname("0", "0", 1);
bf4acbe4 3407#endif
79072805 3408 }
155aba94 3409 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3410#ifdef OS2
23da6c43 3411 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3412#else
3280af22 3413 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3414#endif
155aba94 3415 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3416 GvMULTI_on(PL_argvgv);
3417 (void)gv_AVadd(PL_argvgv);
3418 av_clear(GvAVn(PL_argvgv));
79072805 3419 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3420 SV *sv = newSVpv(argv[0],0);
3421 av_push(GvAVn(PL_argvgv),sv);
3422 if (PL_widesyscalls)
e84ff256 3423 (void)sv_utf8_decode(sv);
79072805
LW		 3424 }
3425 }
155aba94 3426 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3427 HV *hv;
3280af22
NIS		 3428 GvMULTI_on(PL_envgv);
3429 hv = GvHVn(PL_envgv);
14befaf4 3430 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3431#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3432 /* Note that if the supplied env parameter is actually a copy
3433 of the global environ then it may now point to free'd memory
3434 if the environment has been modified since. To avoid this
3435 problem we treat env==NULL as meaning 'use the default'
3436 */
3437 if (!env)
3438 env = environ;
5aabfad6 3439 if (env != environ)
79072805 3440 environ[0] = Nullch;
103a7189
JH		 3441#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3442 {
3443 char **env_base;
9041c2e3 3444 for (env_base = env; *env; env++)
103a7189
JH		 3445 dup_env_count++;
3446 if ((dup_env_base = (char **)
480bfd1e 3447 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3448 char **dup_env;
3449 for (env = env_base, dup_env = dup_env_base;
3450 *env;
480bfd1e
JH		 3451 env++, dup_env++) {
3452 /* With environ one needs to use safesysmalloc(). */
3453 *dup_env = safesysmalloc(strlen(*env) + 1);
3454 (void)strcpy(*dup_env, *env);
3455 }
103a7189
JH		 3456 *dup_env = Nullch;
3457 env = dup_env_base;
3458 } /* else what? */
3459 }
3460#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3461 if (env)
3462 for (; *env; env++) {
93a17b20 3463 if (!(s = strchr(*env,'=')))
79072805
LW		 3464 continue;
3465 *s++ = '\0';
60ce6247