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Convert rest of PerlIO's memory tables to per-interp and add clone functions
[perl5.git] / perl.c
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CommitLineData
a0d0e21e
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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
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8 */
9
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LW
10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW
20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
26#endif
27
acfe0abc 28static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 29
a687059c
LW
30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW
36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
4d1ff10f 42#if defined(USE_5005THREADS)
06d86050
GS
43# define INIT_TLS_AND_INTERP \
44 STMT_START { \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
47 INIT_THREADS; \
48 ALLOC_THREAD_KEY; \
49 } \
50 } STMT_END
51#else
52# if defined(USE_ITHREADS)
53# define INIT_TLS_AND_INTERP \
54 STMT_START { \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
57 INIT_THREADS; \
58 ALLOC_THREAD_KEY; \
534825c4
GS
59 PERL_SET_THX(my_perl); \
60 OP_REFCNT_INIT; \
61 } \
62 else { \
63 PERL_SET_THX(my_perl); \
06d86050 64 } \
06d86050
GS
65 } STMT_END
66# else
67# define INIT_TLS_AND_INTERP \
68 STMT_START { \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
71 } \
72 PERL_SET_THX(my_perl); \
73 } STMT_END
74# endif
75#endif
76
32e30700
GS
77#ifdef PERL_IMPLICIT_SYS
78PerlInterpreter *
7766f137
GS
79perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
84{
85 PerlInterpreter *my_perl;
32e30700
GS
86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 88 INIT_TLS_AND_INTERP;
32e30700
GS
89 Zero(my_perl, 1, PerlInterpreter);
90 PL_Mem = ipM;
7766f137
GS
91 PL_MemShared = ipMS;
92 PL_MemParse = ipMP;
32e30700
GS
93 PL_Env = ipE;
94 PL_StdIO = ipStd;
95 PL_LIO = ipLIO;
96 PL_Dir = ipD;
97 PL_Sock = ipS;
98 PL_Proc = ipP;
7766f137 99
32e30700
GS
100 return my_perl;
101}
102#else
954c1994
GS
103
104/*
105=for apidoc perl_alloc
106
107Allocates a new Perl interpreter. See L<perlembed>.
108
109=cut
110*/
111
93a17b20 112PerlInterpreter *
cea2e8a9 113perl_alloc(void)
79072805 114{
cea2e8a9 115 PerlInterpreter *my_perl;
79072805 116
54aff467 117 /* New() needs interpreter, so call malloc() instead */
e8ee3774 118 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 119
06d86050 120 INIT_TLS_AND_INTERP;
dedcbb81 121 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 122 return my_perl;
79072805 123}
32e30700 124#endif /* PERL_IMPLICIT_SYS */
79072805 125
954c1994
GS
126/*
127=for apidoc perl_construct
128
129Initializes a new Perl interpreter. See L<perlembed>.
130
131=cut
132*/
133
79072805 134void
0cb96387 135perl_construct(pTHXx)
79072805 136{
4d1ff10f 137#ifdef USE_5005THREADS
a863c7d1 138#ifndef FAKE_THREADS
e1f15930 139 struct perl_thread *thr = NULL;
a863c7d1 140#endif /* FAKE_THREADS */
4d1ff10f 141#endif /* USE_5005THREADS */
ba869deb 142
8990e307 143#ifdef MULTIPLICITY
54aff467 144 init_interp();
ac27b0f5 145 PL_perl_destruct_level = 1;
54aff467
GS
146#else
147 if (PL_perl_destruct_level > 0)
148 init_interp();
149#endif
150
33f46ff6 151 /* Init the real globals (and main thread)? */
3280af22 152 if (!PL_linestr) {
4d1ff10f 153#ifdef USE_5005THREADS
533c011a 154 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB
155 /*
156 * Safe to use basic SV functions from now on (though
157 * not things like mortals or tainting yet).
158 */
533c011a
NIS
159 MUTEX_INIT(&PL_eval_mutex);
160 COND_INIT(&PL_eval_cond);
161 MUTEX_INIT(&PL_threads_mutex);
162 COND_INIT(&PL_nthreads_cond);
ba869deb 163# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 164 MUTEX_INIT(&PL_svref_mutex);
ba869deb 165# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 166
5ff3f7a4 167 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS
168 MUTEX_INIT(&PL_sv_lock_mutex);
169 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 170
199100c8 171 thr = init_main_thread();
4d1ff10f 172#endif /* USE_5005THREADS */
11343788 173
14dd3ad8 174#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 175 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 176#endif
312caa8e 177
2aea9f8a
GS
178 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
179
3280af22
NIS
180 PL_linestr = NEWSV(65,79);
181 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 182
3280af22 183 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
184 /* set read-only and try to insure than we wont see REFCNT==0
185 very often */
186
3280af22
NIS
187 SvREADONLY_on(&PL_sv_undef);
188 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 189
3280af22
NIS
190 sv_setpv(&PL_sv_no,PL_No);
191 SvNV(&PL_sv_no);
192 SvREADONLY_on(&PL_sv_no);
193 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 194
3280af22
NIS
195 sv_setpv(&PL_sv_yes,PL_Yes);
196 SvNV(&PL_sv_yes);
197 SvREADONLY_on(&PL_sv_yes);
198 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 199 }
79072805 200
cea2e8a9 201 PL_sighandlerp = Perl_sighandler;
3280af22 202 PL_pidstatus = newHV();
44a8e56a 203
79072805
LW
204#ifdef MSDOS
205 /*
206 * There is no way we can refer to them from Perl so close them to save
207 * space. The other alternative would be to provide STDAUX and STDPRN
208 * filehandles.
209 */
2b96b0a5
JH
210 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
211 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW
212#endif
213 }
214
8bfdd7d9 215 PL_rs = newSVpvn("\n", 1);
dc92893f 216
cea2e8a9 217 init_stacks();
79072805 218
748a9306 219 init_ids();
3280af22 220 PL_lex_state = LEX_NOTPARSING;
a5f75d66 221
312caa8e 222 JMPENV_BOOTSTRAP;
f86702cc
PP
223 STATUS_ALL_SUCCESS;
224
0672f40e 225 init_i18nl10n(1);
36477c24 226 SET_NUMERIC_STANDARD();
0b5b802d 227
a7cb1f99
GS
228 {
229 U8 *s;
230 PL_patchlevel = NEWSV(0,4);
155aba94 231 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 232 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 233 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 234 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS
235 /* Build version strings using "native" characters */
236 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
237 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
238 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS
239 *s = '\0';
240 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
241 SvPOK_on(PL_patchlevel);
242 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
243 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 244#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 245 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 246#endif
a7cb1f99
GS
247 ;
248 SvNOK_on(PL_patchlevel); /* dual valued */
249 SvUTF8_on(PL_patchlevel);
250 SvREADONLY_on(PL_patchlevel);
251 }
79072805 252
ab821d7f 253#if defined(LOCAL_PATCH_COUNT)
3280af22 254 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
255#endif
256
52853b95
GS
257#ifdef HAVE_INTERP_INTERN
258 sys_intern_init();
259#endif
260
3a1ee7e8 261 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 262
3280af22
NIS
263 PL_fdpid = newAV(); /* for remembering popen pids by fd */
264 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 265 PL_errors = newSVpvn("",0);
1fcf4c12 266#ifdef USE_ITHREADS
13137afc
AB
267 PL_regex_padav = newAV();
268 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
269 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 270#endif
e5dd39fc
AB
271#ifdef USE_REENTRANT_API
272 New(31337, PL_reentrant_buffer,1, REBUF);
273 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
274#endif
3d47000e
AB
275
276 /* Note that strtab is a rather special HV. Assumptions are made
277 about not iterating on it, and not adding tie magic to it.
278 It is properly deallocated in perl_destruct() */
279 PL_strtab = newHV();
280
281#ifdef USE_5005THREADS
282 MUTEX_INIT(&PL_strtab_mutex);
283#endif
284 HvSHAREKEYS_off(PL_strtab); /* mandatory */
285 hv_ksplit(PL_strtab, 512);
286
0631ea03
AB
287#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
288 _dyld_lookup_and_bind
289 ("__environ", (unsigned long *) &environ_pointer, NULL);
290#endif /* environ */
291
292#ifdef USE_ENVIRON_ARRAY
293 PL_origenviron = environ;
294#endif
295
8990e307 296 ENTER;
79072805
LW
297}
298
954c1994
GS
299/*
300=for apidoc perl_destruct
301
302Shuts down a Perl interpreter. See L<perlembed>.
303
304=cut
305*/
306
31d77e54 307int
0cb96387 308perl_destruct(pTHXx)
79072805 309{
7c474504 310 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 311 HV *hv;
4d1ff10f 312#ifdef USE_5005THREADS
33f46ff6 313 Thread t;
cea2e8a9 314 dTHX;
4d1ff10f 315#endif /* USE_5005THREADS */
8990e307 316
7766f137
GS
317 /* wait for all pseudo-forked children to finish */
318 PERL_WAIT_FOR_CHILDREN;
319
4d1ff10f 320#ifdef USE_5005THREADS
0f15f207 321#ifndef FAKE_THREADS
8023c3ce
MB
322 /* Pass 1 on any remaining threads: detach joinables, join zombies */
323 retry_cleanup:
533c011a 324 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 325 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 326 "perl_destruct: waiting for %d threads...\n",
533c011a 327 PL_nthreads - 1));
33f46ff6 328 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB
329 MUTEX_LOCK(&t->mutex);
330 switch (ThrSTATE(t)) {
331 AV *av;
c7848ba1 332 case THRf_ZOMBIE:
bf49b057 333 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 334 "perl_destruct: joining zombie %p\n", t));
605e5515
MB
335 ThrSETSTATE(t, THRf_DEAD);
336 MUTEX_UNLOCK(&t->mutex);
533c011a 337 PL_nthreads--;
8023c3ce
MB
338 /*
339 * The SvREFCNT_dec below may take a long time (e.g. av
340 * may contain an object scalar whose destructor gets
341 * called) so we have to unlock threads_mutex and start
342 * all over again.
343 */
533c011a 344 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 345 JOIN(t, &av);
605e5515 346 SvREFCNT_dec((SV*)av);
bf49b057 347 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 348 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 349 goto retry_cleanup;
c7848ba1 350 case THRf_R_JOINABLE:
bf49b057 351 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
352 "perl_destruct: detaching thread %p\n", t));
353 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 354 /*
c7848ba1
MB
355 * We unlock threads_mutex and t->mutex in the opposite order
356 * from which we locked them just so that DETACH won't
357 * deadlock if it panics. It's only a breach of good style
358 * not a bug since they are unlocks not locks.
359 */
533c011a 360 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB
361 DETACH(t);
362 MUTEX_UNLOCK(&t->mutex);
8023c3ce 363 goto retry_cleanup;
c7848ba1 364 default:
bf49b057 365 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
366 "perl_destruct: ignoring %p (state %u)\n",
367 t, ThrSTATE(t)));
368 MUTEX_UNLOCK(&t->mutex);
c7848ba1 369 /* fall through and out */
33f46ff6
MB
370 }
371 }
8023c3ce
MB
372 /* We leave the above "Pass 1" loop with threads_mutex still locked */
373
374 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 375 while (PL_nthreads > 1)
11343788 376 {
bf49b057 377 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 378 "perl_destruct: final wait for %d threads\n",
533c011a
NIS
379 PL_nthreads - 1));
380 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB
381 }
382 /* At this point, we're the last thread */
533c011a 383 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 384 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS
385 MUTEX_DESTROY(&PL_threads_mutex);
386 COND_DESTROY(&PL_nthreads_cond);
b57a092c 387 PL_nthreads--;
0f15f207 388#endif /* !defined(FAKE_THREADS) */
4d1ff10f 389#endif /* USE_5005THREADS */
11343788 390
3280af22 391 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
392#ifdef DEBUGGING
393 {
394 char *s;
155aba94 395 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc
PP
396 int i = atoi(s);
397 if (destruct_level < i)
398 destruct_level = i;
399 }
4633a7c4
LW
400 }
401#endif
402
31d77e54
AB
403
404 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
405 dJMPENV;
406 int x = 0;
407
408 JMPENV_PUSH(x);
409 if (PL_endav && !PL_minus_c)
410 call_list(PL_scopestack_ix, PL_endav);
411 JMPENV_POP;
26f423df 412 }
f3faeb53 413 LEAVE;
a0d0e21e
LW
414 FREETMPS;
415
ff0cee69
PP
416 /* We must account for everything. */
417
418 /* Destroy the main CV and syntax tree */
3280af22
NIS
419 if (PL_main_root) {
420 PL_curpad = AvARRAY(PL_comppad);
421 op_free(PL_main_root);
422 PL_main_root = Nullop;
a0d0e21e 423 }
3280af22
NIS
424 PL_curcop = &PL_compiling;
425 PL_main_start = Nullop;
426 SvREFCNT_dec(PL_main_cv);
427 PL_main_cv = Nullcv;
24d3c518 428 PL_dirty = TRUE;
ff0cee69 429
13621cfb
NIS
430 /* Tell PerlIO we are about to tear things apart in case
431 we have layers which are using resources that should
432 be cleaned up now.
433 */
434
435 PerlIO_destruct(aTHX);
436
3280af22 437 if (PL_sv_objcount) {
a0d0e21e
LW
438 /*
439 * Try to destruct global references. We do this first so that the
440 * destructors and destructees still exist. Some sv's might remain.
441 * Non-referenced objects are on their own.
442 */
a0d0e21e 443 sv_clean_objs();
8990e307
LW
444 }
445
5cd24f17 446 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
447 SvREFCNT_dec(PL_warnhook);
448 PL_warnhook = Nullsv;
449 SvREFCNT_dec(PL_diehook);
450 PL_diehook = Nullsv;
5cd24f17 451
4b556e6c 452 /* call exit list functions */
3280af22 453 while (PL_exitlistlen-- > 0)
acfe0abc 454 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 455
3280af22 456 Safefree(PL_exitlist);
4b556e6c 457
a0d0e21e 458 if (destruct_level == 0){
8990e307 459
a0d0e21e 460 DEBUG_P(debprofdump());
ac27b0f5 461
a0d0e21e 462 /* The exit() function will do everything that needs doing. */
31d77e54 463 return STATUS_NATIVE_EXPORT;;
a0d0e21e 464 }
5dd60ef7 465
551a8b83
JH
466 /* jettison our possibly duplicated environment */
467
468#ifdef USE_ENVIRON_ARRAY
469 if (environ != PL_origenviron) {
470 I32 i;
471
472 for (i = 0; environ[i]; i++)
4b420006 473 safesysfree(environ[i]);
0631ea03 474
4b420006
JH
475 /* Must use safesysfree() when working with environ. */
476 safesysfree(environ);
551a8b83
JH
477
478 environ = PL_origenviron;
479 }
480#endif
481
5f8cb046
DM
482#ifdef USE_ITHREADS
483 /* the syntax tree is shared between clones
484 * so op_free(PL_main_root) only ReREFCNT_dec's
485 * REGEXPs in the parent interpreter
486 * we need to manually ReREFCNT_dec for the clones
487 */
488 {
489 I32 i = AvFILLp(PL_regex_padav) + 1;
490 SV **ary = AvARRAY(PL_regex_padav);
491
492 while (i) {
35061a7e 493 SV *resv = ary[--i];
ba89bb6e 494 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM
495
496 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 497 /* this is PL_reg_curpm, already freed
35061a7e
DM
498 * flag is set in regexec.c:S_regtry
499 */
500 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 501 }
1cc8b4c5
AB
502 else if(SvREPADTMP(resv)) {
503 SvREPADTMP_off(resv);
504 }
35061a7e 505 else {
5f8cb046
DM
506 ReREFCNT_dec(re);
507 }
508 }
509 }
510 SvREFCNT_dec(PL_regex_padav);
511 PL_regex_padav = Nullav;
512 PL_regex_pad = NULL;
513#endif
514
5f05dabc
PP
515 /* loosen bonds of global variables */
516
3280af22
NIS
517 if(PL_rsfp) {
518 (void)PerlIO_close(PL_rsfp);
519 PL_rsfp = Nullfp;
8ebc5c01
PP
520 }
521
522 /* Filters for program text */
3280af22
NIS
523 SvREFCNT_dec(PL_rsfp_filters);
524 PL_rsfp_filters = Nullav;
8ebc5c01
PP
525
526 /* switches */
3280af22
NIS
527 PL_preprocess = FALSE;
528 PL_minus_n = FALSE;
529 PL_minus_p = FALSE;
530 PL_minus_l = FALSE;
531 PL_minus_a = FALSE;
532 PL_minus_F = FALSE;
533 PL_doswitches = FALSE;
599cee73 534 PL_dowarn = G_WARN_OFF;
3280af22
NIS
535 PL_doextract = FALSE;
536 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
537 PL_unsafe = FALSE;
538
539 Safefree(PL_inplace);
540 PL_inplace = Nullch;
a7cb1f99 541 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
542
543 if (PL_e_script) {
544 SvREFCNT_dec(PL_e_script);
545 PL_e_script = Nullsv;
8ebc5c01
PP
546 }
547
bc0a45ed
DM
548 while (--PL_origargc >= 0) {
549 Safefree(PL_origargv[PL_origargc]);
550 }
551 Safefree(PL_origargv);
552
8ebc5c01
PP
553 /* magical thingies */
554
7889fe52
NIS
555 SvREFCNT_dec(PL_ofs_sv); /* $, */
556 PL_ofs_sv = Nullsv;
5f05dabc 557
7889fe52
NIS
558 SvREFCNT_dec(PL_ors_sv); /* $\ */
559 PL_ors_sv = Nullsv;
8ebc5c01 560
3280af22
NIS
561 SvREFCNT_dec(PL_rs); /* $/ */
562 PL_rs = Nullsv;
dc92893f 563
d33b2eba
GS
564 PL_multiline = 0; /* $* */
565 Safefree(PL_osname); /* $^O */
566 PL_osname = Nullch;
5f05dabc 567
3280af22
NIS
568 SvREFCNT_dec(PL_statname);
569 PL_statname = Nullsv;
570 PL_statgv = Nullgv;
5f05dabc 571
8ebc5c01
PP
572 /* defgv, aka *_ should be taken care of elsewhere */
573
8ebc5c01 574 /* clean up after study() */
3280af22
NIS
575 SvREFCNT_dec(PL_lastscream);
576 PL_lastscream = Nullsv;
577 Safefree(PL_screamfirst);
578 PL_screamfirst = 0;
579 Safefree(PL_screamnext);
580 PL_screamnext = 0;
8ebc5c01 581
7d5ea4e7
GS
582 /* float buffer */
583 Safefree(PL_efloatbuf);
584 PL_efloatbuf = Nullch;
585 PL_efloatsize = 0;
586
8ebc5c01 587 /* startup and shutdown function lists */
3280af22 588 SvREFCNT_dec(PL_beginav);
5a837c8f 589 SvREFCNT_dec(PL_beginav_save);
3280af22 590 SvREFCNT_dec(PL_endav);
7d30b5c4 591 SvREFCNT_dec(PL_checkav);
3280af22
NIS
592 SvREFCNT_dec(PL_initav);
593 PL_beginav = Nullav;
5a837c8f 594 PL_beginav_save = Nullav;
3280af22 595 PL_endav = Nullav;
7d30b5c4 596 PL_checkav = Nullav;
3280af22 597 PL_initav = Nullav;
5618dfe8 598
8ebc5c01 599 /* shortcuts just get cleared */
3280af22 600 PL_envgv = Nullgv;
3280af22
NIS
601 PL_incgv = Nullgv;
602 PL_hintgv = Nullgv;
603 PL_errgv = Nullgv;
604 PL_argvgv = Nullgv;
605 PL_argvoutgv = Nullgv;
606 PL_stdingv = Nullgv;
bf49b057 607 PL_stderrgv = Nullgv;
3280af22
NIS
608 PL_last_in_gv = Nullgv;
609 PL_replgv = Nullgv;
5c831c24 610 PL_debstash = Nullhv;
8ebc5c01
PP
611
612 /* reset so print() ends up where we expect */
613 setdefout(Nullgv);
5c831c24 614
7a1c5554
GS
615 SvREFCNT_dec(PL_argvout_stack);
616 PL_argvout_stack = Nullav;
8ebc5c01 617
5c831c24
GS
618 SvREFCNT_dec(PL_modglobal);
619 PL_modglobal = Nullhv;
620 SvREFCNT_dec(PL_preambleav);
621 PL_preambleav = Nullav;
622 SvREFCNT_dec(PL_subname);
623 PL_subname = Nullsv;
624 SvREFCNT_dec(PL_linestr);
625 PL_linestr = Nullsv;
626 SvREFCNT_dec(PL_pidstatus);
627 PL_pidstatus = Nullhv;
628 SvREFCNT_dec(PL_toptarget);
629 PL_toptarget = Nullsv;
630 SvREFCNT_dec(PL_bodytarget);
631 PL_bodytarget = Nullsv;
632 PL_formtarget = Nullsv;
633
d33b2eba 634 /* free locale stuff */
b9582b6a 635#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
636 Safefree(PL_collation_name);
637 PL_collation_name = Nullch;
b9582b6a 638#endif
d33b2eba 639
b9582b6a 640#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
641 Safefree(PL_numeric_name);
642 PL_numeric_name = Nullch;
a453c169 643 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 644#endif
d33b2eba 645
5c831c24
GS
646 /* clear utf8 character classes */
647 SvREFCNT_dec(PL_utf8_alnum);
648 SvREFCNT_dec(PL_utf8_alnumc);
649 SvREFCNT_dec(PL_utf8_ascii);
650 SvREFCNT_dec(PL_utf8_alpha);
651 SvREFCNT_dec(PL_utf8_space);
652 SvREFCNT_dec(PL_utf8_cntrl);
653 SvREFCNT_dec(PL_utf8_graph);
654 SvREFCNT_dec(PL_utf8_digit);
655 SvREFCNT_dec(PL_utf8_upper);
656 SvREFCNT_dec(PL_utf8_lower);
657 SvREFCNT_dec(PL_utf8_print);
658 SvREFCNT_dec(PL_utf8_punct);
659 SvREFCNT_dec(PL_utf8_xdigit);
660 SvREFCNT_dec(PL_utf8_mark);
661 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 662 SvREFCNT_dec(PL_utf8_totitle);
5c831c24
GS
663 SvREFCNT_dec(PL_utf8_tolower);
664 PL_utf8_alnum = Nullsv;
665 PL_utf8_alnumc = Nullsv;
666 PL_utf8_ascii = Nullsv;
667 PL_utf8_alpha = Nullsv;
668 PL_utf8_space = Nullsv;
669 PL_utf8_cntrl = Nullsv;
670 PL_utf8_graph = Nullsv;
671 PL_utf8_digit = Nullsv;
672 PL_utf8_upper = Nullsv;
673 PL_utf8_lower = Nullsv;
674 PL_utf8_print = Nullsv;
675 PL_utf8_punct = Nullsv;
676 PL_utf8_xdigit = Nullsv;
677 PL_utf8_mark = Nullsv;
678 PL_utf8_toupper = Nullsv;
679 PL_utf8_totitle = Nullsv;
680 PL_utf8_tolower = Nullsv;
681
971a9dd3
GS
682 if (!specialWARN(PL_compiling.cop_warnings))
683 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 684 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
685 if (!specialCopIO(PL_compiling.cop_io))
686 SvREFCNT_dec(PL_compiling.cop_io);
687 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS
688#ifdef USE_ITHREADS
689 Safefree(CopFILE(&PL_compiling));
690 CopFILE(&PL_compiling) = Nullch;
691 Safefree(CopSTASHPV(&PL_compiling));
692#else
01724ea0 693 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS
694 CopFILEGV(&PL_compiling) = Nullgv;
695 /* cop_stash is not refcounted */
01724ea0 696#endif
5c831c24 697
a0d0e21e 698 /* Prepare to destruct main symbol table. */
5f05dabc 699
3280af22
NIS
700 hv = PL_defstash;
701 PL_defstash = 0;
a0d0e21e 702 SvREFCNT_dec(hv);
5c831c24
GS
703 SvREFCNT_dec(PL_curstname);
704 PL_curstname = Nullsv;
a0d0e21e 705
5a844595
GS
706 /* clear queued errors */
707 SvREFCNT_dec(PL_errors);
708 PL_errors = Nullsv;
709
a0d0e21e 710 FREETMPS;
0453d815 711 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 712 if (PL_scopestack_ix != 0)
0453d815
PM
713 Perl_warner(aTHX_ WARN_INTERNAL,
714 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
715 (long)PL_scopestack_ix);
716 if (PL_savestack_ix != 0)
0453d815
PM
717 Perl_warner(aTHX_ WARN_INTERNAL,
718 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
719 (long)PL_savestack_ix);
720 if (PL_tmps_floor != -1)
0453d815 721 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 722 (long)PL_tmps_floor + 1);
a0d0e21e 723 if (cxstack_ix != -1)
0453d815 724 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 725 (long)cxstack_ix + 1);
a0d0e21e 726 }
8990e307
LW
727
728 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 729 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 730 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
731
732 /* the 2 is for PL_fdpid and PL_strtab */
733 while (PL_sv_count > 2 && sv_clean_all())
734 ;
735
d33b2eba
GS
736 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
737 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
738 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
739 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 740
d4777f27
GS
741 AvREAL_off(PL_fdpid); /* no surviving entries */
742 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
743 PL_fdpid = Nullav;
744
6c644e78
GS
745#ifdef HAVE_INTERP_INTERN
746 sys_intern_clear();
747#endif
748
6e72f9df
PP
749 /* Destruct the global string table. */
750 {
751 /* Yell and reset the HeVAL() slots that are still holding refcounts,
752 * so that sv_free() won't fail on them.
753 */
754 I32 riter;
755 I32 max;
756 HE *hent;
757 HE **array;
758
759 riter = 0;
3280af22
NIS
760 max = HvMAX(PL_strtab);
761 array = HvARRAY(PL_strtab);
6e72f9df
PP
762 hent = array[0];
763 for (;;) {
0453d815
PM
764 if (hent && ckWARN_d(WARN_INTERNAL)) {
765 Perl_warner(aTHX_ WARN_INTERNAL,
766 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
767 HeVAL(hent) - Nullsv, HeKEY(hent));
768 HeVAL(hent) = Nullsv;
769 hent = HeNEXT(hent);
770 }
771 if (!hent) {
772 if (++riter > max)
773 break;
774 hent = array[riter];
775 }
776 }
777 }
3280af22 778 SvREFCNT_dec(PL_strtab);
6e72f9df 779
e652bb2f 780#ifdef USE_ITHREADS
a0739874
DM
781 /* free the pointer table used for cloning */
782 ptr_table_free(PL_ptr_table);
53186e96 783#endif
a0739874 784
d33b2eba
GS
785 /* free special SVs */
786
787 SvREFCNT(&PL_sv_yes) = 0;
788 sv_clear(&PL_sv_yes);
789 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 790 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
791
792 SvREFCNT(&PL_sv_no) = 0;
793 sv_clear(&PL_sv_no);
794 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 795 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS
796
797 SvREFCNT(&PL_sv_undef) = 0;
798 SvREADONLY_off(&PL_sv_undef);
d33b2eba 799
0453d815
PM
800 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
801 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 802
3a1ee7e8
NIS
803#if 1 && defined(PERLIO_LAYERS)
804 /* No more IO - including error messages ! */
805 PerlIO_cleanup(aTHX);
806#endif
807
3280af22 808 Safefree(PL_origfilename);
3280af22 809 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
810 if (PL_reg_curpm)
811 Safefree(PL_reg_curpm);
82ba1be6 812 Safefree(PL_reg_poscache);
3280af22
NIS
813 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
814 Safefree(PL_op_mask);
cf36064f
GS
815 Safefree(PL_psig_ptr);
816 Safefree(PL_psig_name);
2c2666fc 817 Safefree(PL_bitcount);
ce08f86c 818 Safefree(PL_psig_pend);
6e72f9df 819 nuke_stacks();
3280af22 820 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 821
a0d0e21e 822 DEBUG_P(debprofdump());
4d1ff10f 823#ifdef USE_5005THREADS
5f08fbcd 824 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
825 MUTEX_DESTROY(&PL_sv_mutex);
826 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 827 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 828 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 829 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
830#ifdef EMULATE_ATOMIC_REFCOUNTS
831 MUTEX_DESTROY(&PL_svref_mutex);
832#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 833
8023c3ce 834 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
835 Safefree(SvPVX(PL_thrsv));
836 Safefree(SvANY(PL_thrsv));
837 Safefree(PL_thrsv);
838 PL_thrsv = Nullsv;
4d1ff10f 839#endif /* USE_5005THREADS */
d33b2eba 840
e5dd39fc
AB
841#ifdef USE_REENTRANT_API
842 Safefree(PL_reentrant_buffer->tmbuff);
843 Safefree(PL_reentrant_buffer);
844#endif
845
612f20c3
GS
846 sv_free_arenas();
847
fc36a67e
PP
848 /* As the absolutely last thing, free the non-arena SV for mess() */
849
3280af22 850 if (PL_mess_sv) {
9c63abab
GS
851 /* it could have accumulated taint magic */
852 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
853 MAGIC* mg;
854 MAGIC* moremagic;
855 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
856 moremagic = mg->mg_moremagic;
14befaf4
DM
857 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
858 && mg->mg_len >= 0)
9c63abab
GS
859 Safefree(mg->mg_ptr);
860 Safefree(mg);
861 }
862 }
fc36a67e 863 /* we know that type >= SVt_PV */
155aba94 864 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
865 Safefree(SvPVX(PL_mess_sv));
866 Safefree(SvANY(PL_mess_sv));
867 Safefree(PL_mess_sv);
868 PL_mess_sv = Nullsv;
fc36a67e 869 }
31d77e54 870 return STATUS_NATIVE_EXPORT;
79072805
LW
871}
872
954c1994
GS
873/*
874=for apidoc perl_free
875
876Releases a Perl interpreter. See L<perlembed>.
877
878=cut
879*/
880
79072805 881void
0cb96387 882perl_free(pTHXx)
79072805 883{
acfe0abc 884#if defined(WIN32) || defined(NETWARE)
ce3e5b80 885# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
886# ifdef NETWARE
887 void *host = nw_internal_host;
888# else
889 void *host = w32_internal_host;
890# endif
891# ifndef NETWARE
892 if (PerlProc_lasthost()) {
6ea0e807 893# ifdef USE_PERLIO
ce08f86c 894 PerlIO_cleanup();
6ea0e807 895# endif
acfe0abc
GS
896 }
897# endif
ce3e5b80 898 PerlMem_free(aTHXx);
acfe0abc
GS
899# ifdef NETWARE
900 nw5_delete_internal_host(host);
901# else
902 win32_delete_internal_host(host);
903# endif
1c0ca838 904# else
6ea0e807 905# ifdef USE_PERLIO
acfe0abc 906 PerlIO_cleanup();
6ea0e807 907# endif
1c0ca838
GS
908 PerlMem_free(aTHXx);
909# endif
acfe0abc
GS
910#else
911 PerlMem_free(aTHXx);
76e3520e 912#endif
79072805
LW
913}
914
4b556e6c 915void
864dbfa3 916Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 917{
3280af22
NIS
918 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
919 PL_exitlist[PL_exitlistlen].fn = fn;
920 PL_exitlist[PL_exitlistlen].ptr = ptr;
921 ++PL_exitlistlen;
4b556e6c
JD
922}
923
954c1994
GS
924/*
925=for apidoc perl_parse
926
927Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
928
929=cut
930*/
931
79072805 932int
0cb96387 933perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 934{
6224f72b 935 I32 oldscope;
6224f72b 936 int ret;
db36c5a1 937 dJMPENV;
4d1ff10f 938#ifdef USE_5005THREADS
cea2e8a9
GS
939 dTHX;
940#endif
8d063cd8 941
a687059c
LW
942#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
943#ifdef IAMSUID
944#undef IAMSUID
cea2e8a9 945 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
946setuid perl scripts securely.\n");
947#endif
948#endif
949
3280af22 950 PL_origargc = argc;
bc0a45ed
DM
951 {
952 /* we copy rather than point to argv
953 * since perl_clone will copy and perl_destruct
3a1ee7e8 954 * has no way of knowing if we've made a copy or
bc0a45ed
DM
955 * just point to argv
956 */
957 int i = PL_origargc;
958 New(0, PL_origargv, i+1, char*);
959 PL_origargv[i] = '\0';
960 while (i-- > 0) {
961 PL_origargv[i] = savepv(argv[i]);
962 }
963 }
964
0631ea03 965
a0d0e21e 966
3280af22 967 if (PL_do_undump) {
a0d0e21e
LW
968
969 /* Come here if running an undumped a.out. */
970
3280af22
NIS
971 PL_origfilename = savepv(argv[0]);
972 PL_do_undump = FALSE;
a0d0e21e 973 cxstack_ix = -1; /* start label stack again */
748a9306 974 init_ids();
a0d0e21e
LW
975 init_postdump_symbols(argc,argv,env);
976 return 0;
977 }
978
3280af22
NIS
979 if (PL_main_root) {
980 PL_curpad = AvARRAY(PL_comppad);
981 op_free(PL_main_root);
982 PL_main_root = Nullop;
ff0cee69 983 }
3280af22
NIS
984 PL_main_start = Nullop;
985 SvREFCNT_dec(PL_main_cv);
986 PL_main_cv = Nullcv;
79072805 987
3280af22
NIS
988 time(&PL_basetime);
989 oldscope = PL_scopestack_ix;
599cee73 990 PL_dowarn = G_WARN_OFF;
f86702cc 991
14dd3ad8
GS
992#ifdef PERL_FLEXIBLE_EXCEPTIONS
993 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
994#else
995 JMPENV_PUSH(ret);
996#endif
6224f72b 997 switch (ret) {
312caa8e 998 case 0:
14dd3ad8
GS
999#ifndef PERL_FLEXIBLE_EXCEPTIONS
1000 parse_body(env,xsinit);
1001#endif
7d30b5c4
GS
1002 if (PL_checkav)
1003 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1004 ret = 0;
1005 break;
6224f72b
GS
1006 case 1:
1007 STATUS_ALL_FAILURE;
1008 /* FALL THROUGH */
1009 case 2:
1010 /* my_exit() was called */
3280af22 1011 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1012 LEAVE;
1013 FREETMPS;
3280af22 1014 PL_curstash = PL_defstash;
7d30b5c4
GS
1015 if (PL_checkav)
1016 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1017 ret = STATUS_NATIVE_EXPORT;
1018 break;
6224f72b 1019 case 3:
bf49b057 1020 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1021 ret = 1;
1022 break;
6224f72b 1023 }
14dd3ad8
GS
1024 JMPENV_POP;
1025 return ret;
1026}
1027
1028#ifdef PERL_FLEXIBLE_EXCEPTIONS
1029STATIC void *
1030S_vparse_body(pTHX_ va_list args)
1031{
1032 char **env = va_arg(args, char**);
1033 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1034
1035 return parse_body(env, xsinit);
312caa8e 1036}
14dd3ad8 1037#endif
312caa8e
CS
1038
1039STATIC void *
14dd3ad8 1040S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1041{
312caa8e
CS
1042 int argc = PL_origargc;
1043 char **argv = PL_origargv;
312caa8e
CS
1044 char *scriptname = NULL;
1045 int fdscript = -1;
1046 VOL bool dosearch = FALSE;
1047 char *validarg = "";
1048 AV* comppadlist;
1049 register SV *sv;
1050 register char *s;
cf756827 1051 char *cddir = Nullch;
312caa8e 1052
3280af22 1053 sv_setpvn(PL_linestr,"",0);
79cb57f6 1054 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
1055 SAVEFREESV(sv);
1056 init_main_stash();
54310121 1057
6224f72b
GS
1058 for (argc--,argv++; argc > 0; argc--,argv++) {
1059 if (argv[0][0] != '-' || !argv[0][1])
1060 break;
1061#ifdef DOSUID
1062 if (*validarg)
1063 validarg = " PHOOEY ";
1064 else
1065 validarg = argv[0];
13281fa4 1066#endif
6224f72b
GS
1067 s = argv[0]+1;
1068 reswitch:
1069 switch (*s) {
729a02f2
GS
1070 case 'C':
1071#ifdef WIN32
c0932edc 1072 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
1073 /* FALL THROUGH */
1074#endif
1d5472a9
GS
1075#ifndef PERL_STRICT_CR
1076 case '\r':
1077#endif
6224f72b
GS
1078 case ' ':
1079 case '0':
1080 case 'F':
1081 case 'a':
1082 case 'c':
1083 case 'd':
1084 case 'D':
1085 case 'h':
1086 case 'i':
1087 case 'l':
1088 case 'M':
1089 case 'm':
1090 case 'n':
1091 case 'p':
1092 case 's':
1093 case 'u':
1094 case 'U':
1095 case 'v':
599cee73
PM
1096 case 'W':
1097 case 'X':
6224f72b 1098 case 'w':
155aba94 1099 if ((s = moreswitches(s)))
6224f72b
GS
1100 goto reswitch;
1101 break;
33b78306 1102
6224f72b 1103 case 'T':
3280af22 1104 PL_tainting = TRUE;
6224f72b
GS
1105 s++;
1106 goto reswitch;
f86702cc 1107
6224f72b 1108 case 'e':
bf4acbe4
GS
1109#ifdef MACOS_TRADITIONAL
1110 /* ignore -e for Dev:Pseudo argument */
1111 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1112 break;
bf4acbe4 1113#endif
3280af22 1114 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1115 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1116 if (!PL_e_script) {
79cb57f6 1117 PL_e_script = newSVpvn("",0);
0cb96387 1118 filter_add(read_e_script, NULL);
6224f72b
GS
1119 }
1120 if (*++s)
3280af22 1121 sv_catpv(PL_e_script, s);
6224f72b 1122 else if (argv[1]) {
3280af22 1123 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1124 argc--,argv++;
1125 }
1126 else
cea2e8a9 1127 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1128 sv_catpv(PL_e_script, "\n");
6224f72b 1129 break;
afe37c7d 1130
6224f72b
GS
1131 case 'I': /* -I handled both here and in moreswitches() */
1132 forbid_setid("-I");
1133 if (!*++s && (s=argv[1]) != Nullch) {
1134 argc--,argv++;
1135 }
6224f72b 1136 if (s && *s) {
0df16ed7
GS
1137 char *p;
1138 STRLEN len = strlen(s);
1139 p = savepvn(s, len);
9c8a64f0 1140 incpush(p, TRUE, TRUE);
0df16ed7
GS
1141 sv_catpvn(sv, "-I", 2);
1142 sv_catpvn(sv, p, len);
1143 sv_catpvn(sv, " ", 1);
6224f72b 1144 Safefree(p);
0df16ed7
GS
1145 }
1146 else
a67e862a 1147 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1148 break;
1149 case 'P':
1150 forbid_setid("-P");
3280af22 1151 PL_preprocess = TRUE;
6224f72b
GS
1152 s++;
1153 goto reswitch;
1154 case 'S':
1155 forbid_setid("-S");
1156 dosearch = TRUE;
1157 s++;
1158 goto reswitch;
1159 case 'V':
3280af22
NIS
1160 if (!PL_preambleav)
1161 PL_preambleav = newAV();
1162 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1163 if (*++s != ':') {
3280af22 1164 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1165#ifdef VMS
6b88bc9c 1166 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1167#else
3280af22 1168 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1169#endif
3280af22 1170 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1171# ifdef DEBUGGING
3280af22 1172 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1173# endif
6224f72b 1174# ifdef MULTIPLICITY
8f872242 1175 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1176# endif
4d1ff10f
AB
1177# ifdef USE_5005THREADS
1178 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1179# endif
ac5e8965
JH
1180# ifdef USE_ITHREADS
1181 sv_catpv(PL_Sv," USE_ITHREADS");
1182# endif
10cc9d2a
JH
1183# ifdef USE_64_BIT_INT
1184 sv_catpv(PL_Sv," USE_64_BIT_INT");
1185# endif
1186# ifdef USE_64_BIT_ALL
1187 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1188# endif
1189# ifdef USE_LONG_DOUBLE
1190 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1191# endif
53430762
JH
1192# ifdef USE_LARGE_FILES
1193 sv_catpv(PL_Sv," USE_LARGE_FILES");
1194# endif
ac5e8965
JH
1195# ifdef USE_SOCKS
1196 sv_catpv(PL_Sv," USE_SOCKS");
1197# endif
b363f7ed
GS
1198# ifdef PERL_IMPLICIT_CONTEXT
1199 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1200# endif
1201# ifdef PERL_IMPLICIT_SYS
1202 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1203# endif
3280af22 1204 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1205
6224f72b
GS
1206#if defined(LOCAL_PATCH_COUNT)
1207 if (LOCAL_PATCH_COUNT > 0) {
1208 int i;
3280af22 1209 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1210 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1211 if (PL_localpatches[i])
cea2e8a9 1212 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1213 }
1214 }
1215#endif
cea2e8a9 1216 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1217#ifdef __DATE__
1218# ifdef __TIME__
cea2e8a9 1219 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1220# else
cea2e8a9 1221 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1222# endif
1223#endif
3280af22 1224 sv_catpv(PL_Sv, "; \
6224f72b 1225$\"=\"\\n \"; \
69fcd688
JH
1226@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1227#ifdef __CYGWIN__
1228 sv_catpv(PL_Sv,"\
1229push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1230#endif
1231 sv_catpv(PL_Sv, "\
6224f72b
GS
1232print \" \\%ENV:\\n @env\\n\" if @env; \
1233print \" \\@INC:\\n @INC\\n\";");
1234 }
1235 else {
3280af22
NIS
1236 PL_Sv = newSVpv("config_vars(qw(",0);
1237 sv_catpv(PL_Sv, ++s);
1238 sv_catpv(PL_Sv, "))");
6224f72b
GS
1239 s += strlen(s);
1240 }
3280af22 1241 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1242 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1243 goto reswitch;
1244 case 'x':
3280af22 1245 PL_doextract = TRUE;
6224f72b
GS
1246 s++;
1247 if (*s)
f4c556ac 1248 cddir = s;
6224f72b
GS
1249 break;
1250 case 0:
1251 break;
1252 case '-':
1253 if (!*++s || isSPACE(*s)) {
1254 argc--,argv++;
1255 goto switch_end;
1256 }
1257 /* catch use of gnu style long options */
1258 if (strEQ(s, "version")) {
1259 s = "v";
1260 goto reswitch;
1261 }
1262 if (strEQ(s, "help")) {
1263 s = "h";
1264 goto reswitch;
1265 }
1266 s--;
1267 /* FALL THROUGH */
1268 default:
cea2e8a9 1269 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1270 }
1271 }
6224f72b 1272 switch_end:
54310121 1273
f675dbe5
CB
1274 if (
1275#ifndef SECURE_INTERNAL_GETENV
1276 !PL_tainting &&
1277#endif
cf756827 1278 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1279 {
cf756827 1280 char *popt = s;
74288ac8
GS
1281 while (isSPACE(*s))
1282 s++;
1283 if (*s == '-' && *(s+1) == 'T')
1284 PL_tainting = TRUE;
1285 else {
cf756827 1286 char *popt_copy = Nullch;
74288ac8 1287 while (s && *s) {
4ea8f8fb 1288 char *d;
74288ac8
GS
1289 while (isSPACE(*s))
1290 s++;
1291 if (*s == '-') {
1292 s++;
1293 if (isSPACE(*s))
1294 continue;
1295 }
4ea8f8fb 1296 d = s;
74288ac8
GS
1297 if (!*s)
1298 break;
1299 if (!strchr("DIMUdmw", *s))
cea2e8a9 1300 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1301 while (++s && *s) {
1302 if (isSPACE(*s)) {
cf756827
GS
1303 if (!popt_copy) {
1304 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1305 s = popt_copy + (s - popt);
1306 d = popt_copy + (d - popt);
1307 }
4ea8f8fb
MS
1308 *s++ = '\0';
1309 break;
1310 }
1311 }
1312 moreswitches(d);
6224f72b 1313 }
6224f72b
GS
1314 }
1315 }
a0d0e21e 1316
6224f72b
GS
1317 if (!scriptname)
1318 scriptname = argv[0];
3280af22 1319 if (PL_e_script) {
6224f72b
GS
1320 argc++,argv--;
1321 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1322 }
1323 else if (scriptname == Nullch) {
1324#ifdef MSDOS
1325 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1326 moreswitches("h");
1327#endif
1328 scriptname = "-";
1329 }
1330
1331 init_perllib();
1332
1333 open_script(scriptname,dosearch,sv,&fdscript);
1334
1335 validate_suid(validarg, scriptname,fdscript);
1336
64ca3a65 1337#ifndef PERL_MICRO
0b5b802d
GS
1338#if defined(SIGCHLD) || defined(SIGCLD)
1339 {
1340#ifndef SIGCHLD
1341# define SIGCHLD SIGCLD
1342#endif
1343 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1344 if (sigstate == SIG_IGN) {
1345 if (ckWARN(WARN_SIGNAL))
1346 Perl_warner(aTHX_ WARN_SIGNAL,
1347 "Can't ignore signal CHLD, forcing to default");
1348 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1349 }
1350 }
1351#endif
64ca3a65 1352#endif
0b5b802d 1353
bf4acbe4
GS
1354#ifdef MACOS_TRADITIONAL
1355 if (PL_doextract || gMacPerl_AlwaysExtract) {
1356#else
f4c556ac 1357 if (PL_doextract) {
bf4acbe4 1358#endif
6224f72b 1359 find_beginning();
f4c556ac
GS
1360 if (cddir && PerlDir_chdir(cddir) < 0)
1361 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1362
1363 }
6224f72b 1364
3280af22
NIS
1365 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1366 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1367 CvUNIQUE_on(PL_compcv);
1368
1369 PL_comppad = newAV();
1370 av_push(PL_comppad, Nullsv);
1371 PL_curpad = AvARRAY(PL_comppad);
1372 PL_comppad_name = newAV();
1373 PL_comppad_name_fill = 0;
1374 PL_min_intro_pending = 0;
1375 PL_padix = 0;
4d1ff10f 1376#ifdef USE_5005THREADS
79cb57f6 1377 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1378 PL_curpad[0] = (SV*)newAV();
1379 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1380 CvOWNER(PL_compcv) = 0;
1381 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1382 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1383#endif /* USE_5005THREADS */
6224f72b
GS
1384
1385 comppadlist = newAV();
1386 AvREAL_off(comppadlist);
3280af22
NIS
1387 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1388 av_store(comppadlist, 1, (SV*)PL_comppad);
1389 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1390
0c4f7ff0 1391 boot_core_PerlIO();
6224f72b 1392 boot_core_UNIVERSAL();
9a34ef1d 1393#ifndef PERL_MICRO
09bef843 1394 boot_core_xsutils();
9a34ef1d 1395#endif
6224f72b
GS
1396
1397 if (xsinit)
acfe0abc 1398 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1399#ifndef PERL_MICRO
ed79a026 1400#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1401 init_os_extras();
6224f72b 1402#endif
64ca3a65 1403#endif
6224f72b 1404
29209bc5 1405#ifdef USE_SOCKS
1b9c9cf5
DH
1406# ifdef HAS_SOCKS5_INIT
1407 socks5_init(argv[0]);
1408# else
29209bc5 1409 SOCKSinit(argv[0]);
1b9c9cf5 1410# endif
ac27b0f5 1411#endif
29209bc5 1412
6224f72b
GS
1413 init_predump_symbols();
1414 /* init_postdump_symbols not currently designed to be called */
1415 /* more than once (ENV isn't cleared first, for example) */
1416 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1417 if (!PL_do_undump)
6224f72b
GS
1418 init_postdump_symbols(argc,argv,env);
1419
1420 init_lexer();
1421
1422 /* now parse the script */
1423
91487cfc 1424 SETERRNO(0,SS$_NORMAL);
3280af22 1425 PL_error_count = 0;
bf4acbe4
GS
1426#ifdef MACOS_TRADITIONAL
1427 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1428 if (PL_minus_c)
1429 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1430 else {
1431 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1432 MacPerl_MPWFileName(PL_origfilename));
1433 }
1434 }
1435#else
3280af22
NIS
1436 if (yyparse() || PL_error_count) {
1437 if (PL_minus_c)
cea2e8a9 1438 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1439 else {
cea2e8a9 1440 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1441 PL_origfilename);
6224f72b
GS
1442 }
1443 }
bf4acbe4 1444#endif
57843af0 1445 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1446 PL_curstash = PL_defstash;
1447 PL_preprocess = FALSE;
1448 if (PL_e_script) {
1449 SvREFCNT_dec(PL_e_script);
1450 PL_e_script = Nullsv;
6224f72b
GS
1451 }
1452
8bfdd7d9
HS
1453/*
1454 Not sure that this is still the right place to do this now that we
1455 no longer use PL_nrs. HVDS 2001/09/09
1456*/
864dbfa3 1457 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1458
3280af22 1459 if (PL_do_undump)
6224f72b
GS
1460 my_unexec();
1461
57843af0
GS
1462 if (isWARN_ONCE) {
1463 SAVECOPFILE(PL_curcop);
1464 SAVECOPLINE(PL_curcop);
3280af22 1465 gv_check(PL_defstash);
57843af0 1466 }
6224f72b
GS
1467
1468 LEAVE;
1469 FREETMPS;
1470
1471#ifdef MYMALLOC
1472 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1473 dump_mstats("after compilation:");
1474#endif
1475
1476 ENTER;
3280af22 1477 PL_restartop = 0;
312caa8e 1478 return NULL;
6224f72b
GS
1479}
1480
954c1994
GS
1481/*
1482=for apidoc perl_run
1483
1484Tells a Perl interpreter to run. See L<perlembed>.
1485
1486=cut
1487*/
1488
6224f72b 1489int
0cb96387 1490perl_run(pTHXx)
6224f72b 1491{
6224f72b 1492 I32 oldscope;
14dd3ad8 1493 int ret = 0;
db36c5a1 1494 dJMPENV;
4d1ff10f 1495#ifdef USE_5005THREADS
cea2e8a9
GS
1496 dTHX;
1497#endif
6224f72b 1498
3280af22 1499 oldscope = PL_scopestack_ix;
96e176bf
CL
1500#ifdef VMS
1501 VMSISH_HUSHED = 0;
1502#endif
6224f72b 1503
14dd3ad8 1504#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1505 redo_body:
14dd3ad8
GS
1506 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1507#else
1508 JMPENV_PUSH(ret);
1509#endif
6224f72b
GS
1510 switch (ret) {
1511 case 1:
1512 cxstack_ix = -1; /* start context stack again */
312caa8e 1513 goto redo_body;
14dd3ad8
GS
1514 case 0: /* normal completion */
1515#ifndef PERL_FLEXIBLE_EXCEPTIONS
1516 redo_body:
1517 run_body(oldscope);
1518#endif
1519 /* FALL THROUGH */
1520 case 2: /* my_exit() */
3280af22 1521 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1522 LEAVE;
1523 FREETMPS;
3280af22 1524 PL_curstash = PL_defstash;
3a1ee7e8 1525 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
1526 PL_endav && !PL_minus_c)
1527 call_list(oldscope, PL_endav);
6224f72b
GS
1528#ifdef MYMALLOC
1529 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1530 dump_mstats("after execution: ");
1531#endif
14dd3ad8
GS
1532 ret = STATUS_NATIVE_EXPORT;
1533 break;
6224f72b 1534 case 3:
312caa8e
CS
1535 if (PL_restartop) {
1536 POPSTACK_TO(PL_mainstack);
1537 goto redo_body;
6224f72b 1538 }
bf49b057 1539 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1540 FREETMPS;
14dd3ad8
GS
1541 ret = 1;
1542 break;
6224f72b
GS
1543 }
1544
14dd3ad8
GS
1545 JMPENV_POP;
1546 return ret;
312caa8e
CS
1547}
1548
14dd3ad8 1549#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1550STATIC void *
14dd3ad8 1551S_vrun_body(pTHX_ va_list args)
312caa8e 1552{
312caa8e
CS
1553 I32 oldscope = va_arg(args, I32);
1554
14dd3ad8
GS
1555 return run_body(oldscope);
1556}
1557#endif
1558
1559
1560STATIC void *
1561S_run_body(pTHX_ I32 oldscope)
1562{
6224f72b 1563 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1564 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1565
3280af22 1566 if (!PL_restartop) {
6224f72b
GS
1567 DEBUG_x(dump_all());
1568 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1569 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1570 PTR2UV(thr)));
6224f72b 1571
3280af22 1572 if (PL_minus_c) {
bf4acbe4 1573#ifdef MACOS_TRADITIONAL
be708cc0 1574 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1575#else
bf49b057 1576 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1577#endif
6224f72b
GS
1578 my_exit(0);
1579 }
3280af22 1580 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1581 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1582 if (PL_initav)
1583 call_list(oldscope, PL_initav);
6224f72b
GS
1584 }
1585
1586 /* do it */
1587
3280af22 1588 if (PL_restartop) {
533c011a 1589 PL_op = PL_restartop;
3280af22 1590 PL_restartop = 0;
cea2e8a9 1591 CALLRUNOPS(aTHX);
6224f72b 1592 }
3280af22
NIS
1593 else if (PL_main_start) {
1594 CvDEPTH(PL_main_cv) = 1;
533c011a 1595 PL_op = PL_main_start;
cea2e8a9 1596 CALLRUNOPS(aTHX);
6224f72b
GS
1597 }
1598
f6b3007c
JH
1599 my_exit(0);
1600 /* NOTREACHED */
312caa8e 1601 return NULL;
6224f72b
GS
1602}
1603
954c1994
GS
1604/*
1605=for apidoc p||get_sv
1606
1607Returns the SV of the specified Perl scalar. If C<create> is set and the
1608Perl variable does not exist then it will be created. If C<create> is not
1609set and the variable does not exist then NULL is returned.
1610
1611=cut
1612*/
1613
6224f72b 1614SV*
864dbfa3 1615Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1616{
1617 GV *gv;
4d1ff10f 1618#ifdef USE_5005THREADS
6224f72b
GS
1619 if (name[1] == '\0' && !isALPHA(name[0])) {
1620 PADOFFSET tmp = find_threadsv(name);
411caa50 1621 if (tmp != NOT_IN_PAD)
6224f72b 1622 return THREADSV(tmp);
6224f72b 1623 }
4d1ff10f 1624#endif /* USE_5005THREADS */
6224f72b
GS
1625 gv = gv_fetchpv(name, create, SVt_PV);
1626 if (gv)
1627 return GvSV(gv);
1628 return Nullsv;
1629}
1630
954c1994
GS
1631/*
1632=for apidoc p||get_av
1633
1634Returns the AV of the specified Perl array. If C<create> is set and the
1635Perl variable does not exist then it will be created. If C<create> is not
1636set and the variable does not exist then NULL is returned.
1637
1638=cut
1639*/
1640
6224f72b 1641AV*
864dbfa3 1642Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1643{
1644 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1645 if (create)
1646 return GvAVn(gv);
1647 if (gv)
1648 return GvAV(gv);
1649 return Nullav;
1650}
1651
954c1994
GS
1652/*
1653=for apidoc p||get_hv
1654
1655Returns the HV of the specified Perl hash. If C<create> is set and the
1656Perl variable does not exist then it will be created. If C<create> is not
1657set and the variable does not exist then NULL is returned.
1658
1659=cut
1660*/
1661
6224f72b 1662HV*
864dbfa3 1663Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1664{
a0d0e21e
LW
1665 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1666 if (create)
1667 return GvHVn(gv);
1668 if (gv)
1669 return GvHV(gv);
1670 return Nullhv;
1671}
1672
954c1994
GS
1673/*
1674=for apidoc p||get_cv
1675
1676Returns the CV of the specified Perl subroutine. If C<create> is set and
1677the Perl subroutine does not exist then it will be declared (which has the
1678same effect as saying C<sub name;>). If C<create> is not set and the
1679subroutine does not exist then NULL is returned.
1680
1681=cut
1682*/
1683
a0d0e21e 1684CV*
864dbfa3 1685Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1686{
1687 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1688 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1689 /* XXX this is probably not what they think they're getting.
1690 * It has the same effect as "sub name;", i.e. just a forward
1691 * declaration! */
8ebc5c01 1692 if (create && !GvCVu(gv))
774d564b 1693 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1694 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1695 Nullop,
a0d0e21e
LW
1696 Nullop);
1697 if (gv)
8ebc5c01 1698 return GvCVu(gv);
a0d0e21e
LW
1699 return Nullcv;
1700}
1701
79072805
LW
1702/* Be sure to refetch the stack pointer after calling these routines. */
1703
954c1994
GS
1704/*
1705=for apidoc p||call_argv
1706
1707Performs a callback to the specified Perl sub. See L<perlcall>.
1708
1709=cut
1710*/
1711
a0d0e21e 1712I32
864dbfa3 1713Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1714
8ac85365
NIS
1715 /* See G_* flags in cop.h */
1716 /* null terminated arg list */
8990e307 1717{
a0d0e21e 1718 dSP;
8990e307 1719
924508f0 1720 PUSHMARK(SP);
a0d0e21e 1721 if (argv) {
8990e307 1722 while (*argv) {
a0d0e21e 1723 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1724 argv++;
1725 }
a0d0e21e 1726 PUTBACK;
8990e307 1727 }
864dbfa3 1728 return call_pv(sub_name, flags);
8990e307
LW
1729}
1730
954c1994
GS
1731/*
1732=for apidoc p||call_pv
1733
1734Performs a callback to the specified Perl sub. See L<perlcall>.
1735
1736=cut
1737*/
1738
a0d0e21e 1739I32
864dbfa3 1740Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1741 /* name of the subroutine */
1742 /* See G_* flags in cop.h */
a0d0e21e 1743{
864dbfa3 1744 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1745}
1746
954c1994
GS
1747/*
1748=for apidoc p||call_method
1749
1750Performs a callback to the specified Perl method. The blessed object must
1751be on the stack. See L<perlcall>.
1752
1753=cut
1754*/
1755
a0d0e21e 1756I32
864dbfa3 1757Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1758 /* name of the subroutine */
1759 /* See G_* flags in cop.h */
a0d0e21e 1760{
968b3946 1761 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1762}
1763
1764/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1765/*
1766=for apidoc p||call_sv
1767
1768Performs a callback to the Perl sub whose name is in the SV. See
1769L<perlcall>.
1770
1771=cut
1772*/
1773
a0d0e21e 1774I32
864dbfa3 1775Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1776 /* See G_* flags in cop.h */
a0d0e21e 1777{
924508f0 1778 dSP;
a0d0e21e 1779 LOGOP myop; /* fake syntax tree node */
968b3946 1780 UNOP method_op;
aa689395 1781 I32 oldmark;
13689cfe 1782 volatile I32 retval = 0;
a0d0e21e 1783 I32 oldscope;
54310121 1784 bool oldcatch = CATCH_GET;
6224f72b 1785 int ret;
533c011a 1786 OP* oldop = PL_op;
db36c5a1 1787 dJMPENV;
1e422769 1788
a0d0e21e
LW
1789 if (flags & G_DISCARD) {
1790 ENTER;
1791 SAVETMPS;
1792 }
1793
aa689395 1794 Zero(&myop, 1, LOGOP);
54310121 1795 myop.op_next = Nullop;
f51d4af5 1796 if (!(flags & G_NOARGS))
aa689395 1797 myop.op_flags |= OPf_STACKED;
54310121
PP
1798 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1799 (flags & G_ARRAY) ? OPf_WANT_LIST :
1800 OPf_WANT_SCALAR);
462e5cf6 1801 SAVEOP();
533c011a 1802 PL_op = (OP*)&myop;
aa689395 1803
3280af22
NIS
1804 EXTEND(PL_stack_sp, 1);
1805 *++PL_stack_sp = sv;
aa689395 1806 oldmark = TOPMARK;
3280af22 1807 oldscope = PL_scopestack_ix;
a0d0e21e 1808
3280af22 1809 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1810 /* Handle first BEGIN of -d. */
3280af22 1811 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1812 /* Try harder, since this may have been a sighandler, thus
1813 * curstash may be meaningless. */
3280af22 1814 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1815 && !(flags & G_NODEBUG))
533c011a 1816 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1817
968b3946
GS
1818 if (flags & G_METHOD) {
1819 Zero(&method_op, 1, UNOP);
1820 method_op.op_next = PL_op;
1821 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1822 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1823 PL_op = (OP*)&method_op;
968b3946
GS
1824 }
1825
312caa8e 1826 if (!(flags & G_EVAL)) {
0cdb2077 1827 CATCH_SET(TRUE);
14dd3ad8 1828 call_body((OP*)&myop, FALSE);
312caa8e 1829 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1830 CATCH_SET(oldcatch);
312caa8e
CS
1831 }
1832 else {
d78bda3d 1833 myop.op_other = (OP*)&myop;
3280af22 1834 PL_markstack_ptr--;
4633a7c4
LW
1835 /* we're trying to emulate pp_entertry() here */
1836 {
c09156bb 1837 register PERL_CONTEXT *cx;
54310121 1838 I32 gimme = GIMME_V;
ac27b0f5 1839
4633a7c4
LW
1840 ENTER;
1841 SAVETMPS;
ac27b0f5 1842
968b3946 1843 push_return(Nullop);
1d76a5c3 1844 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1845 PUSHEVAL(cx, 0, 0);
533c011a 1846 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1847
faef0170 1848 PL_in_eval = EVAL_INEVAL;
4633a7c4 1849 if (flags & G_KEEPERR)
faef0170 1850 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1851 else
38a03e6e 1852 sv_setpv(ERRSV,"");
4633a7c4 1853 }
3280af22 1854 PL_markstack_ptr++;
a0d0e21e 1855
14dd3ad8
GS
1856#ifdef PERL_FLEXIBLE_EXCEPTIONS
1857 redo_body:
1858 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1859 (OP*)&myop, FALSE);
14dd3ad8
GS
1860#else
1861 JMPENV_PUSH(ret);
1862#endif
6224f72b
GS
1863 switch (ret) {
1864 case 0:
14dd3ad8
GS
1865#ifndef PERL_FLEXIBLE_EXCEPTIONS
1866 redo_body:
1867 call_body((OP*)&myop, FALSE);
1868#endif
312caa8e
CS
1869 retval = PL_stack_sp - (PL_stack_base + oldmark);
1870 if (!(flags & G_KEEPERR))
1871 sv_setpv(ERRSV,"");
a0d0e21e 1872 break;
6224f72b 1873 case 1:
f86702cc 1874 STATUS_ALL_FAILURE;
a0d0e21e 1875 /* FALL THROUGH */
6224f72b 1876 case 2:
a0d0e21e 1877 /* my_exit() was called */
3280af22 1878 PL_curstash = PL_defstash;
a0d0e21e 1879 FREETMPS;
14dd3ad8 1880 JMPENV_POP;
cc3604b1 1881 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1882 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1883 my_exit_jump();
a0d0e21e 1884 /* NOTREACHED */
6224f72b 1885 case 3:
3280af22 1886 if (PL_restartop) {
533c011a 1887 PL_op = PL_restartop;
3280af22 1888 PL_restartop = 0;
312caa8e 1889 goto redo_body;
a0d0e21e 1890 }
3280af22 1891 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1892 if (flags & G_ARRAY)
1893 retval = 0;
1894 else {
1895 retval = 1;
3280af22 1896 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1897 }
312caa8e 1898 break;
a0d0e21e 1899 }
a0d0e21e 1900
3280af22 1901 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1902 SV **newsp;
1903 PMOP *newpm;
1904 I32 gimme;
c09156bb 1905 register PERL_CONTEXT *cx;
a0a2876f
LW
1906 I32 optype;
1907
1908 POPBLOCK(cx,newpm);
1909 POPEVAL(cx);
1910 pop_return();
3280af22 1911 PL_curpm = newpm;
a0a2876f 1912 LEAVE;
a0d0e21e 1913 }
14dd3ad8 1914 JMPENV_POP;
a0d0e21e 1915 }
1e422769 1916
a0d0e21e 1917 if (flags & G_DISCARD) {
3280af22 1918 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1919 retval = 0;
1920 FREETMPS;
1921 LEAVE;
1922 }
533c011a 1923 PL_op = oldop;
a0d0e21e
LW
1924 return retval;
1925}
1926
14dd3ad8 1927#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1928STATIC void *
14dd3ad8 1929S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1930{
1931 OP *myop = va_arg(args, OP*);
1932 int is_eval = va_arg(args, int);
1933
14dd3ad8 1934 call_body(myop, is_eval);
312caa8e
CS
1935 return NULL;
1936}
14dd3ad8 1937#endif
312caa8e
CS
1938
1939STATIC void
14dd3ad8 1940S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1941{
312caa8e
CS
1942 if (PL_op == myop) {
1943 if (is_eval)
f807eda9 1944 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1945 else
f807eda9 1946 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1947 }
1948 if (PL_op)
cea2e8a9 1949 CALLRUNOPS(aTHX);
312caa8e
CS
1950}
1951
6e72f9df 1952/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1953
954c1994
GS
1954/*
1955=for apidoc p||eval_sv
1956
1957Tells Perl to C<eval> the string in the SV.
1958
1959=cut
1960*/
1961
a0d0e21e 1962I32
864dbfa3 1963Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1964
8ac85365 1965 /* See G_* flags in cop.h */
a0d0e21e 1966{
924508f0 1967 dSP;
a0d0e21e 1968 UNOP myop; /* fake syntax tree node */
8fa7f367 1969 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1970 volatile I32 retval = 0;
4633a7c4 1971 I32 oldscope;
6224f72b 1972 int ret;
533c011a 1973 OP* oldop = PL_op;
db36c5a1 1974 dJMPENV;
84902520 1975
4633a7c4
LW
1976 if (flags & G_DISCARD) {
1977 ENTER;
1978 SAVETMPS;
1979 }
1980
462e5cf6 1981 SAVEOP();
533c011a
NIS
1982 PL_op = (OP*)&myop;
1983 Zero(PL_op, 1, UNOP);
3280af22
NIS
1984 EXTEND(PL_stack_sp, 1);
1985 *++PL_stack_sp = sv;
1986 oldscope = PL_scopestack_ix;
79072805 1987
4633a7c4
LW
1988 if (!(flags & G_NOARGS))
1989 myop.op_flags = OPf_STACKED;
79072805 1990 myop.op_next = Nullop;
6e72f9df 1991 myop.op_type = OP_ENTEREVAL;
54310121
PP
1992 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1993 (flags & G_ARRAY) ? OPf_WANT_LIST :
1994 OPf_WANT_SCALAR);
6e72f9df
PP
1995 if (flags & G_KEEPERR)
1996 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1997
14dd3ad8 1998#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1999 redo_body:
14dd3ad8 2000 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 2001 (OP*)&myop, TRUE);
14dd3ad8
GS
2002#else
2003 JMPENV_PUSH(ret);
2004#endif
6224f72b
GS
2005 switch (ret) {
2006 case 0:
14dd3ad8
GS
2007#ifndef PERL_FLEXIBLE_EXCEPTIONS
2008 redo_body:
2009 call_body((OP*)&myop,TRUE);
2010#endif
312caa8e
CS
2011 retval = PL_stack_sp - (PL_stack_base + oldmark);
2012 if (!(flags & G_KEEPERR))
2013 sv_setpv(ERRSV,"");
4633a7c4 2014 break;
6224f72b 2015 case 1:
f86702cc 2016 STATUS_ALL_FAILURE;
4633a7c4 2017 /* FALL THROUGH */
6224f72b 2018 case 2:
4633a7c4 2019 /* my_exit() was called */
3280af22 2020 PL_curstash = PL_defstash;
4633a7c4 2021 FREETMPS;
14dd3ad8 2022 JMPENV_POP;
cc3604b1 2023 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2024 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2025 my_exit_jump();
4633a7c4 2026 /* NOTREACHED */
6224f72b 2027 case 3:
3280af22 2028 if (PL_restartop) {
533c011a 2029 PL_op = PL_restartop;
3280af22 2030 PL_restartop = 0;
312caa8e 2031 goto redo_body;
4633a7c4 2032 }
3280af22 2033 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2034 if (flags & G_ARRAY)
2035 retval = 0;
2036 else {
2037 retval = 1;
3280af22 2038 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2039 }
312caa8e 2040 break;
4633a7c4
LW
2041 }
2042
14dd3ad8 2043 JMPENV_POP;
4633a7c4 2044 if (flags & G_DISCARD) {
3280af22 2045 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2046 retval = 0;
2047 FREETMPS;
2048 LEAVE;
2049 }
533c011a 2050 PL_op = oldop;
4633a7c4
LW
2051 return retval;
2052}
2053
954c1994
GS
2054/*
2055=for apidoc p||eval_pv
2056
2057Tells Perl to C<eval> the given string and return an SV* result.
2058
2059=cut
2060*/
2061
137443ea 2062SV*
864dbfa3 2063Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2064{
2065 dSP;
2066 SV* sv = newSVpv(p, 0);
2067
864dbfa3 2068 eval_sv(sv, G_SCALAR);
137443ea
PP
2069 SvREFCNT_dec(sv);
2070
2071 SPAGAIN;
2072 sv = POPs;
2073 PUTBACK;
2074
2d8e6c8d
GS
2075 if (croak_on_error && SvTRUE(ERRSV)) {
2076 STRLEN n_a;
cea2e8a9 2077 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2078 }
137443ea
PP
2079
2080 return sv;
2081}
2082
4633a7c4
LW
2083/* Require a module. */
2084
954c1994
GS
2085/*
2086=for apidoc p||require_pv
2087
7d3fb230
BS
2088Tells Perl to C<require> the file named by the string argument. It is
2089analogous to the Perl code C<eval "require '$file'">. It's even
2090implemented that way; consider using Perl_load_module instead.
954c1994 2091
7d3fb230 2092=cut */
954c1994 2093
4633a7c4 2094void
864dbfa3 2095Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2096{
d3acc0f7
JP
2097 SV* sv;
2098 dSP;
e788e7d3 2099 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2100 PUTBACK;
2101 sv = sv_newmortal();
4633a7c4
LW
2102 sv_setpv(sv, "require '");
2103 sv_catpv(sv, pv);
2104 sv_catpv(sv, "'");
864dbfa3 2105 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2106 SPAGAIN;
2107 POPSTACK;
79072805
LW
2108}
2109
79072805 2110void
864dbfa3 2111Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2112{
2113 register GV *gv;
2114
155aba94 2115 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2116 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2117}
2118
76e3520e 2119STATIC void
cea2e8a9 2120S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2121{
ab821d7f 2122 /* This message really ought to be max 23 lines.
75c72d73 2123 * Removed -h because the user already knows that option. Others? */
fb73857a 2124
76e3520e 2125 static char *usage_msg[] = {
fb73857a
PP
2126"-0[octal] specify record separator (\\0, if no argument)",
2127"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2128"-C enable native wide character system interfaces",
1950ee41 2129"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2130"-d[:debugger] run program under debugger",
2131"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2132"-e 'command' one line of program (several -e's allowed, omit programfile)",
2133"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2134"-i[extension] edit <> files in place (makes backup if extension supplied)",
2135"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2136"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2137"-[mM][-]module execute `use/no module...' before executing program",
2138"-n assume 'while (<>) { ... }' loop around program",
2139"-p assume loop like -n but print line also, like sed",
2140"-P run program through C preprocessor before compilation",
2141"-s enable rudimentary parsing for switches after programfile",
2142"-S look for programfile using PATH environment variable",
2143"-T enable tainting checks",
2144"-u dump core after parsing program",
fb73857a 2145"-U allow unsafe operations",
aac3bd0d
GS
2146"-v print version, subversion (includes VERY IMPORTANT perl info)",
2147"-V[:variable] print configuration summary (or a single Config.pm variable)",
2148"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2149"-W enable all warnings",
2150"-X disable all warnings",
fb73857a
PP
2151"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2152"\n",
2153NULL
2154};
76e3520e 2155 char **p = usage_msg;
fb73857a 2156
b0e47665
GS
2157 PerlIO_printf(PerlIO_stdout(),
2158 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2159 name);
fb73857a 2160 while (*p)
b0e47665 2161 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2162}
2163
79072805
LW
2164/* This routine handles any switches that can be given during run */
2165
2166char *
864dbfa3 2167Perl_moreswitches(pTHX_ char *s)
79072805 2168{
ba210ebe 2169 STRLEN numlen;
c07a80fd 2170 U32 rschar;
79072805
LW
2171
2172 switch (*s) {
2173 case '0':
a863c7d1 2174 {
53305cf1
NC
2175 I32 flags = 0;
2176 numlen = 4;
2177 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2178 SvREFCNT_dec(PL_rs);
c07a80fd 2179 if (rschar & ~((U8)~0))
8bfdd7d9 2180 PL_rs = &PL_sv_undef;
c07a80fd 2181 else if (!rschar && numlen >= 2)
8bfdd7d9 2182 PL_rs = newSVpvn("", 0);
c07a80fd
PP
2183 else {
2184 char ch = rschar;
8bfdd7d9 2185 PL_rs = newSVpvn(&ch, 1);
79072805
LW
2186 }
2187 return s + numlen;
a863c7d1 2188 }
46487f74
GS
2189 case 'C':
2190 PL_widesyscalls = TRUE;
2191 s++;
2192 return s;
2304df62 2193 case 'F':
3280af22
NIS
2194 PL_minus_F = TRUE;
2195 PL_splitstr = savepv(s + 1);
2304df62
AD
2196 s += strlen(s);
2197 return s;
79072805 2198 case 'a':
3280af22 2199 PL_minus_a = TRUE;
79072805
LW
2200 s++;
2201 return s;
2202 case 'c':
3280af22 2203 PL_minus_c = TRUE;
79072805
LW
2204 s++;
2205 return s;
2206 case 'd':
bbce6d69 2207 forbid_setid("-d");
4633a7c4 2208 s++;
70c94a19
RR
2209 /* The following permits -d:Mod to accepts arguments following an =
2210 in the fashion that -MSome::Mod does. */
2211 if (*s == ':' || *s == '=') {
2212 char *start;
2213 SV *sv;
2214 sv = newSVpv("use Devel::", 0);
2215 start = ++s;
2216 /* We now allow -d:Module=Foo,Bar */
2217 while(isALNUM(*s) || *s==':') ++s;
2218 if (*s != '=')
2219 sv_catpv(sv, start);
2220 else {
2221 sv_catpvn(sv, start, s-start);
2222 sv_catpv(sv, " split(/,/,q{");
2223 sv_catpv(sv, ++s);
2224 sv_catpv(sv, "})");
2225 }
4633a7c4 2226 s += strlen(s);
70c94a19 2227 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2228 }
ed094faf 2229 if (!PL_perldb) {
3280af22 2230 PL_perldb = PERLDB_ALL;
a0d0e21e 2231 init_debugger();
ed094faf 2232 }
79072805
LW
2233 return s;
2234 case 'D':
0453d815 2235 {
79072805 2236#ifdef DEBUGGING
bbce6d69 2237 forbid_setid("-D");
79072805 2238 if (isALPHA(s[1])) {
04932ac8
DM
2239 /* if adding extra options, remember to update DEBUG_MASK */
2240 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW
2241 char *d;
2242
93a17b20 2243 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2244 PL_debug |= 1 << (d - debopts);
79072805
LW
2245 }
2246 else {
3280af22 2247 PL_debug = atoi(s+1);
79072805
LW
2248 for (s++; isDIGIT(*s); s++) ;
2249 }
aea4f609 2250 PL_debug |= DEBUG_TOP_FLAG;
79072805 2251#else
0453d815
PM
2252 if (ckWARN_d(WARN_DEBUGGING))
2253 Perl_warner(aTHX_ WARN_DEBUGGING,
2254 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2255 for (s++; isALNUM(*s); s++) ;
79072805
LW
2256#endif
2257 /*SUPPRESS 530*/
2258 return s;
0453d815 2259 }
4633a7c4 2260 case 'h':
ac27b0f5 2261 usage(PL_origargv[0]);
6ad3d225 2262 PerlProc_exit(0);
79072805 2263 case 'i':
3280af22
NIS
2264 if (PL_inplace)
2265 Safefree(PL_inplace);
2266 PL_inplace = savepv(s+1);
79072805 2267 /*SUPPRESS 530*/
3280af22 2268 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2269 if (*s) {
fb73857a 2270 *s++ = '\0';
7b8d334a
GS
2271 if (*s == '-') /* Additional switches on #! line. */
2272 s++;
2273 }
fb73857a
PP
2274 return s;
2275 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2276 forbid_setid("-I");
fb73857a
PP
2277 ++s;
2278 while (*s && isSPACE(*s))
2279 ++s;
2280 if (*s) {
774d564b 2281 char *e, *p;
0df16ed7
GS
2282 p = s;
2283 /* ignore trailing spaces (possibly followed by other switches) */
2284 do {
2285 for (e = p; *e && !isSPACE(*e); e++) ;
2286 p = e;
2287 while (isSPACE(*p))
2288 p++;
2289 } while (*p && *p != '-');
2290 e = savepvn(s, e-s);
9c8a64f0 2291 incpush(e, TRUE, TRUE);
0df16ed7
GS
2292 Safefree(e);
2293 s = p;
2294 if (*s == '-')
2295 s++;
79072805
LW
2296 }
2297 else
a67e862a 2298 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2299 return s;
79072805 2300 case 'l':
3280af22 2301 PL_minus_l = TRUE;
79072805 2302 s++;
7889fe52
NIS
2303 if (PL_ors_sv) {
2304 SvREFCNT_dec(PL_ors_sv);
2305 PL_ors_sv = Nullsv;
2306 }
79072805 2307 if (isDIGIT(*s)) {
53305cf1 2308 I32 flags = 0;
7889fe52 2309 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
2310 numlen = 3 + (*s == '0');
2311 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
2312 s += numlen;
2313 }
2314 else {
8bfdd7d9 2315 if (RsPARA(PL_rs)) {
7889fe52
NIS
2316 PL_ors_sv = newSVpvn("\n\n",2);
2317 }
2318 else {
8bfdd7d9 2319 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2320 }
79072805
LW
2321 }
2322 return s;
1a30305b 2323 case 'M':
bbce6d69 2324 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2325 /* FALL THROUGH */
2326 case 'm':
bbce6d69 2327 forbid_setid("-m"); /* XXX ? */
1a30305b 2328 if (*++s) {
a5f75d66 2329 char *start;
11343788 2330 SV *sv;
a5f75d66
AD
2331 char *use = "use ";
2332 /* -M-foo == 'no foo' */
2333 if (*s == '-') { use = "no "; ++s; }
11343788 2334 sv = newSVpv(use,0);
a5f75d66 2335 start = s;
1a30305b 2336 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2337 while(isALNUM(*s) || *s==':') ++s;
2338 if (*s != '=') {
11343788 2339 sv_catpv(sv, start);
c07a80fd
PP
2340 if (*(start-1) == 'm') {
2341 if (*s != '\0')
cea2e8a9 2342 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2343 sv_catpv( sv, " ()");
c07a80fd
PP
2344 }
2345 } else {
6df41af2 2346 if (s == start)
be98fb35
GS
2347 Perl_croak(aTHX_ "Module name required with -%c option",
2348 s[-1]);
11343788
MB
2349 sv_catpvn(sv, start, s-start);
2350 sv_catpv(sv, " split(/,/,q{");
2351 sv_catpv(sv, ++s);
2352 sv_catpv(sv, "})");
c07a80fd 2353 }
1a30305b 2354 s += strlen(s);
5c831c24 2355 if (!PL_preambleav)
3280af22
NIS
2356 PL_preambleav = newAV();
2357 av_push(PL_preambleav, sv);
1a30305b
PP
2358 }
2359 else
cea2e8a9 2360 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2361 return s;
79072805 2362 case 'n':
3280af22 2363 PL_minus_n = TRUE;
79072805
LW
2364 s++;
2365 return s;
2366 case 'p':
3280af22 2367 PL_minus_p = TRUE;
79072805
LW
2368 s++;
2369 return s;
2370 case 's':
bbce6d69 2371 forbid_setid("-s");
3280af22 2372 PL_doswitches = TRUE;
79072805
LW
2373 s++;
2374 return s;
463ee0b2 2375 case 'T':
3280af22 2376 if (!PL_tainting)
cea2e8a9 2377 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2378 s++;
2379 return s;
79072805 2380 case 'u':
bf4acbe4
GS
2381#ifdef MACOS_TRADITIONAL
2382 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2383#endif
3280af22 2384 PL_do_undump = TRUE;
79072805
LW
2385 s++;
2386 return s;
2387 case 'U':
3280af22 2388 PL_unsafe = TRUE;
79072805
LW
2389 s++;
2390 return s;
2391 case 'v':
8e9464f1 2392#if !defined(DGUX)
b0e47665 2393 PerlIO_printf(PerlIO_stdout(),
d2560b70 2394 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2395 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2396#else /* DGUX */
2397/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2398 PerlIO_printf(PerlIO_stdout(),
2399 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2400 PerlIO_printf(PerlIO_stdout(),
2401 Perl_form(aTHX_ " built under %s at %s %s\n",
2402 OSNAME, __DATE__, __TIME__));
2403 PerlIO_printf(PerlIO_stdout(),
2404 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2405 OSVERS));
8e9464f1
JH
2406#endif /* !DGUX */
2407
fb73857a
PP
2408#if defined(LOCAL_PATCH_COUNT)
2409 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2410 PerlIO_printf(PerlIO_stdout(),
2411 "\n(with %d registered patch%s, "
2412 "see perl -V for more detail)",
2413 (int)LOCAL_PATCH_COUNT,
2414 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2415#endif
1a30305b 2416
b0e47665 2417 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2418 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH
2419#ifdef MACOS_TRADITIONAL
2420 PerlIO_printf(PerlIO_stdout(),
084592ab 2421 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2422#endif
79072805 2423#ifdef MSDOS
b0e47665
GS
2424 PerlIO_printf(PerlIO_stdout(),
2425 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2426#endif
2427#ifdef DJGPP
b0e47665
GS
2428 PerlIO_printf(PerlIO_stdout(),
2429 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2430 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2431#endif
79072805 2432#ifdef OS2
b0e47665
GS
2433 PerlIO_printf(PerlIO_stdout(),
2434 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2435 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2436#endif
79072805 2437#ifdef atarist
b0e47665
GS
2438 PerlIO_printf(PerlIO_stdout(),
2439 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2440#endif
a3f9223b 2441#ifdef __BEOS__
b0e47665
GS
2442 PerlIO_printf(PerlIO_stdout(),
2443 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2444#endif
1d84e8df 2445#ifdef MPE
b0e47665 2446 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2447 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2448#endif
9d116dd7 2449#ifdef OEMVS
b0e47665
GS
2450 PerlIO_printf(PerlIO_stdout(),
2451 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2452#endif
495c5fdc 2453#ifdef __VOS__
b0e47665
GS
2454 PerlIO_printf(PerlIO_stdout(),
2455 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2456#endif
092bebab 2457#ifdef __OPEN_VM
b0e47665
GS
2458 PerlIO_printf(PerlIO_stdout(),
2459 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2460#endif
a1a0e61e 2461#ifdef POSIX_BC
b0e47665
GS
2462 PerlIO_printf(PerlIO_stdout(),
2463 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2464#endif
61ae2fbf 2465#ifdef __MINT__
b0e47665
GS
2466 PerlIO_printf(PerlIO_stdout(),
2467 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2468#endif
f83d2536 2469#ifdef EPOC
b0e47665
GS
2470 PerlIO_printf(PerlIO_stdout(),
2471 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2472#endif
e1caacb4
JH
2473#ifdef UNDER_CE
2474 printf("WINCE port by Rainer Keuchel, 2001\n");
2475 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2476 wce_hitreturn();
2477#endif
baed7233
DL
2478#ifdef BINARY_BUILD_NOTICE
2479 BINARY_BUILD_NOTICE;
2480#endif
b0e47665
GS
2481 PerlIO_printf(PerlIO_stdout(),
2482 "\n\
79072805 2483Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2484GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2485Complete documentation for Perl, including FAQ lists, should be found on\n\
2486this system using `man perl' or `perldoc perl'. If you have access to the\n\
2487Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2488 PerlProc_exit(0);
79072805 2489 case 'w':
599cee73 2490 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2491 PL_dowarn |= G_WARN_ON;
599cee73
PM
2492 s++;
2493 return s;
2494 case 'W':
ac27b0f5 2495 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2496 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2497 s++;
2498 return s;
2499 case 'X':
ac27b0f5 2500 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2501 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2502 s++;
2503 return s;
a0d0e21e 2504 case '*':
79072805
LW
2505 case ' ':
2506 if (s[1] == '-') /* Additional switches on #! line. */
2507 return s+2;
2508 break;
a0d0e21e 2509 case '-':
79072805 2510 case 0:
51882d45 2511#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2512 case '\r':
2513#endif
79072805
LW
2514 case '\n':
2515 case '\t':
2516 break;
aa689395
PP
2517#ifdef ALTERNATE_SHEBANG
2518 case 'S': /* OS/2 needs -S on "extproc" line. */
2519 break;
2520#endif
a0d0e21e 2521 case 'P':
3280af22 2522 if (PL_preprocess)
a0d0e21e
LW
2523 return s+1;
2524 /* FALL THROUGH */
79072805 2525 default:
cea2e8a9 2526 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2527 }
2528 return Nullch;
2529}
2530
2531/* compliments of Tom Christiansen */
2532
2533/* unexec() can be found in the Gnu emacs distribution */
ee580363 2534/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2535
2536void
864dbfa3 2537Perl_my_unexec(pTHX)
79072805
LW
2538{
2539#ifdef UNEXEC
46fc3d4c
PP
2540 SV* prog;
2541 SV* file;
ee580363 2542 int status = 1;
79072805
LW
2543 extern int etext;
2544
ee580363 2545 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2546 sv_catpv(prog, "/perl");
6b88bc9c 2547 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2548 sv_catpv(file, ".perldump");
79072805 2549
ee580363
GS
2550 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2551 /* unexec prints msg to stderr in case of failure */
6ad3d225 2552 PerlProc_exit(status);
79072805 2553#else
a5f75d66
AD
2554# ifdef VMS
2555# include <lib$routines.h>
2556 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2557# else
79072805 2558 ABORT(); /* for use with undump */
aa689395 2559# endif
a5f75d66 2560#endif
79072805
LW
2561}
2562
cb68f92d
GS
2563/* initialize curinterp */
2564STATIC void
cea2e8a9 2565S_init_interp(pTHX)
cb68f92d
GS
2566{
2567
acfe0abc
GS
2568#ifdef MULTIPLICITY
2569# define PERLVAR(var,type)
2570# define PERLVARA(var,n,type)
2571# if defined(PERL_IMPLICIT_CONTEXT)
2572# if defined(USE_5005THREADS)
2573# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2574# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
2575# else /* !USE_5005THREADS */
2576# define PERLVARI(var,type,init) aTHX->var = init;
2577# define PERLVARIC(var,type,init) aTHX->var = init;
2578# endif /* USE_5005THREADS */
3967c732 2579# else
acfe0abc
GS
2580# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2581# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2582# endif
acfe0abc
GS
2583# include "intrpvar.h"
2584# ifndef USE_5005THREADS
2585# include "thrdvar.h"
2586# endif
2587# undef PERLVAR
2588# undef PERLVARA
2589# undef PERLVARI
2590# undef PERLVARIC
2591#else
2592# define PERLVAR(var,type)
2593# define PERLVARA(var,n,type)
2594# define PERLVARI(var,type,init) PL_##var = init;
2595# define PERLVARIC(var,type,init) PL_##var = init;
2596# include "intrpvar.h"
2597# ifndef USE_5005THREADS
2598# include "thrdvar.h"
2599# endif
2600# undef PERLVAR
2601# undef PERLVARA
2602# undef PERLVARI
2603# undef PERLVARIC
cb68f92d
GS
2604#endif
2605
cb68f92d
GS
2606}
2607
76e3520e 2608STATIC void
cea2e8a9 2609S_init_main_stash(pTHX)
79072805 2610{
463ee0b2 2611 GV *gv;
6e72f9df 2612
3d47000e 2613
ac27b0f5 2614
3280af22 2615 PL_curstash = PL_defstash = newHV();
79cb57f6 2616 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2617 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2618 SvREFCNT_dec(GvHV(gv));
3280af22 2619 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2620 SvREADONLY_on(gv);
3280af22
NIS
2621 HvNAME(PL_defstash) = savepv("main");
2622 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2623 GvMULTI_on(PL_incgv);
2624 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2625 GvMULTI_on(PL_hintgv);
2626 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2627 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2628 GvMULTI_on(PL_errgv);
2629 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2630 GvMULTI_on(PL_replgv);
cea2e8a9 2631 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2632 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2633 sv_setpvn(ERRSV, "", 0);
3280af22 2634 PL_curstash = PL_defstash;
11faa288 2635 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2636 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2637 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2638 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2639 /* We must init $/ before switches are processed. */
864dbfa3 2640 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2641}
2642
76e3520e 2643STATIC void
cea2e8a9 2644S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2645{
6c4ab083 2646 *fdscript = -1;
79072805 2647
3280af22
NIS
2648 if (PL_e_script) {
2649 PL_origfilename = savepv("-e");
96436eeb 2650 }
6c4ab083
GS
2651 else {
2652 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2653 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2654
2655 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2656 char *s = scriptname + 8;
2657 *fdscript = atoi(s);
2658 while (isDIGIT(*s))
2659 s++;
2660 if (*s) {
2661 scriptname = savepv(s + 1);
3280af22
NIS
2662 Safefree(PL_origfilename);
2663 PL_origfilename = scriptname;
6c4ab083
GS
2664 }
2665 }
2666 }
2667
f4dd75d9
GS
2668#ifdef USE_ITHREADS
2669 Safefree(CopFILE(PL_curcop));
2670#else
2671 SvREFCNT_dec(CopFILEGV(PL_curcop));
2672#endif
57843af0 2673 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2674 if (strEQ(PL_origfilename,"-"))
79072805 2675 scriptname = "";
01f988be 2676 if (*fdscript >= 0) {
3280af22 2677 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2678#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2679 if (PL_rsfp)
2680 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2681#endif
2682 }
3280af22 2683 else if (PL_preprocess) {
46fc3d4c 2684 char *cpp_cfg = CPPSTDIN;
79cb57f6 2685 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2686 SV *cmd = NEWSV(0,0);
2687
2688 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2689 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2690 sv_catpv(cpp, cpp_cfg);
79072805 2691
0df16ed7 2692 sv_catpvn(sv, "-I", 2);
fed7345c 2693 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2694
14953ddc
MB
2695 DEBUG_P(PerlIO_printf(Perl_debug_log,
2696 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2697 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2698#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2699 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2700sed %s -e \"/^[^#]/b\" \
2701 -e \"/^#[ ]*include[ ]/b\" \
2702 -e \"/^#[ ]*define[ ]/b\" \
2703 -e \"/^#[ ]*if[ ]/b\" \
2704 -e \"/^#[ ]*ifdef[ ]/b\" \
2705 -e \"/^#[ ]*ifndef[ ]/b\" \
2706 -e \"/^#[ ]*else/b\" \
2707 -e \"/^#[ ]*elif[ ]/b\" \
2708 -e \"/^#[ ]*undef[ ]/b\" \
2709 -e \"/^#[ ]*endif/b\" \
2710 -e \"s/^#.*//\" \
894356b3 2711 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2712 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2713#else
092bebab 2714# ifdef __OPEN_VM
cea2e8a9 2715 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2716%s %s -e '/^[^#]/b' \
2717 -e '/^#[ ]*include[ ]/b' \
2718 -e '/^#[ ]*define[ ]/b' \
2719 -e '/^#[ ]*if[ ]/b' \
2720 -e '/^#[ ]*ifdef[ ]/b' \
2721 -e '/^#[ ]*ifndef[ ]/b' \
2722 -e '/^#[ ]*else/b' \
2723 -e '/^#[ ]*elif[ ]/b' \
2724 -e '/^#[ ]*undef[ ]/b' \
2725 -e '/^#[ ]*endif/b' \
2726 -e 's/^[ ]*#.*//' \
894356b3 2727 %s | %"SVf" %"SVf" %s",
092bebab 2728# else
cea2e8a9 2729 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2730%s %s -e '/^[^#]/b' \
2731 -e '/^#[ ]*include[ ]/b' \
2732 -e '/^#[ ]*define[ ]/b' \
2733 -e '/^#[ ]*if[ ]/b' \
2734 -e '/^#[ ]*ifdef[ ]/b' \
2735 -e '/^#[ ]*ifndef[ ]/b' \
2736 -e '/^#[ ]*else/b' \
2737 -e '/^#[ ]*elif[ ]/b' \
2738 -e '/^#[ ]*undef[ ]/b' \
2739 -e '/^#[ ]*endif/b' \
2740 -e 's/^[ ]*#.*//' \
894356b3 2741 %s | %"SVf" -C %"SVf" %s",
092bebab 2742# endif
79072805
LW
2743#ifdef LOC_SED
2744 LOC_SED,
2745#else
2746 "sed",
2747#endif
3280af22 2748 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2749#endif
46fc3d4c 2750 scriptname, cpp, sv, CPPMINUS);
3280af22 2751 PL_doextract = FALSE;
79072805 2752#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2753 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2754#ifdef HAS_SETEUID
b28d0864 2755 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2756#else
2757#ifdef HAS_SETREUID
b28d0864 2758 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2759#else
2760#ifdef HAS_SETRESUID
b28d0864 2761 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2762#else
b28d0864 2763 PerlProc_setuid(PL_uid);
79072805
LW
2764#endif
2765#endif
85e6fe83 2766#endif
b28d0864 2767 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2768 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2769 }
2770#endif /* IAMSUID */
3280af22 2771 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2772 SvREFCNT_dec(cmd);
2773 SvREFCNT_dec(cpp);
79072805
LW
2774 }
2775 else if (!*scriptname) {
bbce6d69 2776 forbid_setid("program input from stdin");
3280af22 2777 PL_rsfp = PerlIO_stdin();
79072805 2778 }
96436eeb 2779 else {
3280af22 2780 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2781#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2782 if (PL_rsfp)
2783 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2784#endif
2785 }
3280af22 2786 if (!PL_rsfp) {
13281fa4 2787#ifdef DOSUID
a687059c 2788#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2789 if (PL_euid &&
cc49e20b 2790 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2791 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2792 {
46fc3d4c 2793 /* try again */
a7cb1f99 2794 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2795 (int)PERL_REVISION, (int)PERL_VERSION,
2796 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2797 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2798 }
2799#endif
2800#endif
584d69ec
JH
2801#ifdef IAMSUID
2802 errno = EPERM;
2803 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2804 Strerror(errno));
2805#else
cea2e8a9 2806 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2807 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2808#endif
13281fa4 2809 }
79072805 2810}
8d063cd8 2811
7b89560d
JH
2812/* Mention
2813 * I_SYSSTATVFS HAS_FSTATVFS
2814 * I_SYSMOUNT
c890dc6c 2815 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2816 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2817 * here so that metaconfig picks them up. */
2818
104d25b7 2819#ifdef IAMSUID
864dbfa3 2820STATIC int
e688b231 2821S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2822{
0545a864
JH
2823 int check_okay = 0; /* able to do all the required sys/libcalls */
2824 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2825/*
ad27e871 2826 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2827 * fstatvfs() is UNIX98.
0545a864 2828 * fstatfs() is 4.3 BSD.
ad27e871 2829 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2830 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2831 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2832 */
2833
6439433f
JH
2834#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2835
2836# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2837 defined(HAS_FSTATVFS)
2838# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2839 struct statvfs stfs;
6439433f 2840
104d25b7
JH
2841 check_okay = fstatvfs(fd, &stfs) == 0;
2842 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2843# endif /* fstatvfs */
ac27b0f5 2844
6439433f
JH
2845# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2846 defined(PERL_MOUNT_NOSUID) && \
2847 defined(HAS_FSTATFS) && \
2848 defined(HAS_STRUCT_STATFS) && \
2849 defined(HAS_STRUCT_STATFS_F_FLAGS)
2850# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2851 struct statfs stfs;
6439433f 2852
104d25b7 2853 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2854 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2855# endif /* fstatfs */
2856
2857# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2858 defined(PERL_MOUNT_NOSUID) && \
2859 defined(HAS_FSTAT) && \
2860 defined(HAS_USTAT) && \
2861 defined(HAS_GETMNT) && \
2862 defined(HAS_STRUCT_FS_DATA) && \
2863 defined(NOSTAT_ONE)
2864# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2865 struct stat fdst;
6439433f 2866
0545a864 2867 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2868 struct ustat us;
2869 if (ustat(fdst.st_dev, &us) == 0) {
2870 struct fs_data fsd;
2871 /* NOSTAT_ONE here because we're not examining fields which
2872 * vary between that case and STAT_ONE. */
ad27e871 2873 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2874 size_t cmplen = sizeof(us.f_fname);
2875 if (sizeof(fsd.fd_req.path) < cmplen)
2876 cmplen = sizeof(fsd.fd_req.path);
2877 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2878 fdst.st_dev == fsd.fd_req.dev) {
2879 check_okay = 1;
2880 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2881 }
2882 }
2883 }
2884 }
0545a864 2885 }
6439433f
JH
2886# endif /* fstat+ustat+getmnt */
2887
2888# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2889 defined(HAS_GETMNTENT) && \
2890 defined(HAS_HASMNTOPT) && \
2891 defined(MNTOPT_NOSUID)
2892# define FD_ON_NOSUID_CHECK_OKAY
2893 FILE *mtab = fopen("/etc/mtab", "r");
2894 struct mntent *entry;
2895 struct stat stb, fsb;
104d25b7
JH
2896
2897 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2898 while (entry = getmntent(mtab)) {
2899 if (stat(entry->mnt_dir, &fsb) == 0
2900 && fsb.st_dev == stb.st_dev)
2901 {
2902 /* found the filesystem */
2903 check_okay = 1;
2904 if (hasmntopt(entry, MNTOPT_NOSUID))
2905 on_nosuid = 1;
2906 break;
2907 } /* A single fs may well fail its stat(). */
2908 }
104d25b7
JH
2909 }
2910 if (mtab)
6439433f
JH
2911 fclose(mtab);
2912# endif /* getmntent+hasmntopt */
0545a864 2913
ac27b0f5 2914 if (!check_okay)
0545a864 2915 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2916 return on_nosuid;
2917}
2918#endif /* IAMSUID */
2919
76e3520e 2920STATIC void
cea2e8a9 2921S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2922{
155aba94 2923#ifdef IAMSUID
96436eeb 2924 int which;
155aba94 2925#endif
96436eeb 2926
13281fa4
LW
2927 /* do we need to emulate setuid on scripts? */
2928
2929 /* This code is for those BSD systems that have setuid #! scripts disabled
2930 * in the kernel because of a security problem. Merely defining DOSUID
2931 * in perl will not fix that problem, but if you have disabled setuid
2932 * scripts in the kernel, this will attempt to emulate setuid and setgid
2933 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2934 * root version must be called suidperl or sperlN.NNN. If regular perl
2935 * discovers that it has opened a setuid script, it calls suidperl with
2936 * the same argv that it had. If suidperl finds that the script it has
2937 * just opened is NOT setuid root, it sets the effective uid back to the
2938 * uid. We don't just make perl setuid root because that loses the
2939 * effective uid we had before invoking perl, if it was different from the
2940 * uid.
13281fa4
LW
2941 *
2942 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2943 * be defined in suidperl only. suidperl must be setuid root. The
2944 * Configure script will set this up for you if you want it.
2945 */
a687059c 2946
13281fa4 2947#ifdef DOSUID
6e72f9df 2948 char *s, *s2;
a0d0e21e 2949
b28d0864 2950 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2951 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2952 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2953 I32 len;
2d8e6c8d 2954 STRLEN n_a;
13281fa4 2955
a687059c 2956#ifdef IAMSUID
fe14fcc3 2957#ifndef HAS_SETREUID
a687059c
LW
2958 /* On this access check to make sure the directories are readable,
2959 * there is actually a small window that the user could use to make
2960 * filename point to an accessible directory. So there is a faint
2961 * chance that someone could execute a setuid script down in a
2962 * non-accessible directory. I don't know what to do about that.
2963 * But I don't think it's too important. The manual lies when
2964 * it says access() is useful in setuid programs.
2965 */
cc49e20b 2966 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2967 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2968#else
2969 /* If we can swap euid and uid, then we can determine access rights
2970 * with a simple stat of the file, and then compare device and
2971 * inode to make sure we did stat() on the same file we opened.
2972 * Then we just have to make sure he or she can execute it.
2973 */
2974 {
2975 struct stat tmpstatbuf;
2976
85e6fe83
LW
2977 if (
2978#ifdef HAS_SETREUID
b28d0864 2979 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
2980#else
2981# if HAS_SETRESUID
b28d0864 2982 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2983# endif
85e6fe83 2984#endif
b28d0864 2985 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2986 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2987 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2988 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2989#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2990 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2991 Perl_croak(aTHX_ "Permission denied");
104d25b7 2992#endif
b28d0864
NIS
2993 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2994 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2995 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2996 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2997 }
85e6fe83
LW
2998 if (
2999#ifdef HAS_SETREUID
b28d0864 3000 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
3001#else
3002# if defined(HAS_SETRESUID)
b28d0864 3003 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3004# endif
85e6fe83 3005#endif
b28d0864 3006 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3007 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3008 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3009 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3010 }
fe14fcc3 3011#endif /* HAS_SETREUID */
a687059c
LW
3012#endif /* IAMSUID */
3013
b28d0864 3014 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3015 Perl_croak(aTHX_ "Permission denied");
b28d0864 3016 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3017 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3018 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3019 CopLINE_inc(PL_curcop);
6b88bc9c 3020 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3021 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3022 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3023 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3024 if (*s == ' ') s++;
45d8adaa 3025 while (!isSPACE(*s)) s++;
2d8e6c8d 3026 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
3027 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3028 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3029 Perl_croak(aTHX_ "Not a perl script");
a687059c 3030 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
3031 /*
3032 * #! arg must be what we saw above. They can invoke it by
3033 * mentioning suidperl explicitly, but they may not add any strange
3034 * arguments beyond what #! says if they do invoke suidperl that way.
3035 */
3036 len = strlen(validarg);
3037 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3038 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3039 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
3040
3041#ifndef IAMSUID
b28d0864
NIS
3042 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3043 PL_euid == PL_statbuf.st_uid)
3044 if (!PL_do_undump)
cea2e8a9 3045 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3046FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3047#endif /* IAMSUID */
13281fa4 3048
b28d0864
NIS
3049 if (PL_euid) { /* oops, we're not the setuid root perl */
3050 (void)PerlIO_close(PL_rsfp);
13281fa4 3051#ifndef IAMSUID
46fc3d4c 3052 /* try again */
a7cb1f99 3053 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3054 (int)PERL_REVISION, (int)PERL_VERSION,
3055 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3056#endif
cea2e8a9 3057 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
3058 }
3059
b28d0864 3060 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3061#ifdef HAS_SETEGID
b28d0864 3062 (void)setegid(PL_statbuf.st_gid);
a687059c 3063#else
fe14fcc3 3064#ifdef HAS_SETREGID
b28d0864 3065 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3066#else
3067#ifdef HAS_SETRESGID
b28d0864 3068 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3069#else
b28d0864 3070 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3071#endif
3072#endif
85e6fe83 3073#endif
b28d0864 3074 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3075 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3076 }
b28d0864
NIS
3077 if (PL_statbuf.st_mode & S_ISUID) {
3078 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3079#ifdef HAS_SETEUID
b28d0864 3080 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3081#else
fe14fcc3 3082#ifdef HAS_SETREUID
b28d0864 3083 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3084#else
3085#ifdef HAS_SETRESUID
b28d0864 3086 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3087#else
b28d0864 3088 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3089#endif
3090#endif
85e6fe83 3091#endif
b28d0864 3092 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3093 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3094 }
b28d0864 3095 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3096#ifdef HAS_SETEUID
b28d0864 3097 (void)seteuid((Uid_t)PL_uid);
a687059c 3098#else
fe14fcc3 3099#ifdef HAS_SETREUID
b28d0864 3100 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3101#else
85e6fe83 3102#ifdef HAS_SETRESUID
b28d0864 3103 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3104#else
b28d0864 3105 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3106#endif
a687059c
LW
3107#endif
3108#endif
b28d0864 3109 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3110 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3111 }
748a9306 3112 init_ids();
b28d0864 3113 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3114 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3115 }
3116#ifdef IAMSUID
6b88bc9c 3117 else if (PL_preprocess)
cea2e8a9 3118 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3119 else if (fdscript >= 0)
cea2e8a9 3120 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3121 else
cea2e8a9 3122 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3123
3124 /* We absolutely must clear out any saved ids here, so we */
3125 /* exec the real perl, substituting fd script for scriptname. */
3126 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3127 PerlIO_rewind(PL_rsfp);
3128 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3129 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3130 if (!PL_origargv[which])
cea2e8a9
GS
3131 Perl_croak(aTHX_ "Permission denied");
3132 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3133 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3134#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3135 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3136#endif
a7cb1f99 3137 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3138 (int)PERL_REVISION, (int)PERL_VERSION,
3139 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3140 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3141#endif /* IAMSUID */
a687059c 3142#else /* !DOSUID */
3280af22 3143 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3144#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3145 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3146 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3147 ||
b28d0864 3148 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3149 )
b28d0864 3150 if (!PL_do_undump)
cea2e8a9 3151 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3152FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3153#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3154 /* not set-id, must be wrapped */
a687059c 3155 }
13281fa4 3156#endif /* DOSUID */
79072805 3157}
13281fa4 3158
76e3520e 3159STATIC void
cea2e8a9 3160S_find_beginning(pTHX)
79072805 3161{
6e72f9df 3162 register char *s, *s2;
33b78306
LW
3163
3164 /* skip forward in input to the real script? */
3165
bbce6d69 3166 forbid_setid("-x");
bf4acbe4 3167#ifdef MACOS_TRADITIONAL
084592ab 3168 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3169
bf4acbe4
GS
3170 while (PL_doextract || gMacPerl_AlwaysExtract) {
3171 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3172 if (!gMacPerl_AlwaysExtract)
3173 Perl_croak(aTHX_ "No Perl script found in input\n");
3174
3175 if (PL_doextract) /* require explicit override ? */
3176 if (!OverrideExtract(PL_origfilename))
3177 Perl_croak(aTHX_ "User aborted script\n");
3178 else
3179 PL_doextract = FALSE;
3180
3181 /* Pater peccavi, file does not have #! */
3182 PerlIO_rewind(PL_rsfp);
ac27b0f5 3183
bf4acbe4
GS
3184 break;
3185 }
3186#else
3280af22
NIS
3187 while (PL_doextract) {
3188 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3189 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3190#endif
4f0c37ba
IZ
3191 s2 = s;
3192 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS
3193 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3194 PL_doextract = FALSE;
6e72f9df
PP
3195 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3196 s2 = s;
3197 while (*s == ' ' || *s == '\t') s++;
3198 if (*s++ == '-') {
3199 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3200 if (strnEQ(s2-4,"perl",4))
3201 /*SUPPRESS 530*/
155aba94
GS
3202 while ((s = moreswitches(s)))
3203 ;
33b78306 3204 }
95e8664e
CN
3205#ifdef MACOS_TRADITIONAL
3206 break;
3207#endif
83025b21
LW
3208 }
3209 }
3210}
3211
afe37c7d 3212
76e3520e 3213STATIC void
cea2e8a9 3214S_init_ids(pTHX)
352d5a3a 3215{
d8eceb89
JH
3216 PL_uid = PerlProc_getuid();
3217 PL_euid = PerlProc_geteuid();
3218 PL_gid = PerlProc_getgid();
3219 PL_egid = PerlProc_getegid();
748a9306 3220#ifdef VMS
b28d0864
NIS
3221 PL_uid |= PL_gid << 16;
3222 PL_euid |= PL_egid << 16;
748a9306 3223#endif
3280af22 3224 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3225}
79072805 3226
76e3520e 3227STATIC void
cea2e8a9 3228S_forbid_setid(pTHX_ char *s)
bbce6d69 3229{
3280af22 3230 if (PL_euid != PL_uid)
cea2e8a9 3231 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3232 if (PL_egid != PL_gid)
cea2e8a9 3233 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3234}
3235
1ee4443e
IZ
3236void
3237Perl_init_debugger(pTHX)
748a9306 3238{
1ee4443e
IZ
3239 HV *ostash = PL_curstash;
3240
3280af22
NIS
3241 PL_curstash = PL_debstash;
3242 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3243 AvREAL_off(PL_dbargs);
3244 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3245 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3246 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3247 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3248 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3249 sv_setiv(PL_DBsingle, 0);
3280af22 3250 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3251 sv_setiv(PL_DBtrace, 0);
3280af22 3252 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3253 sv_setiv(PL_DBsignal, 0);
1ee4443e 3254 PL_curstash = ostash;
352d5a3a
LW
3255}
3256
2ce36478
SM
3257#ifndef STRESS_REALLOC
3258#define REASONABLE(size) (size)
3259#else
3260#define REASONABLE(size) (1) /* unreasonable */
3261#endif
3262
11343788 3263void
cea2e8a9 3264Perl_init_stacks(pTHX)
79072805 3265{
e336de0d 3266 /* start with 128-item stack and 8K cxstack */
3280af22 3267 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3268 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3269 PL_curstackinfo->si_type = PERLSI_MAIN;
3270 PL_curstack = PL_curstackinfo->si_stack;
3271 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3272
3280af22
NIS
3273 PL_stack_base = AvARRAY(PL_curstack);
3274 PL_stack_sp = PL_stack_base;
3275 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3276
3280af22
NIS
3277 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3278 PL_tmps_floor = -1;
3279 PL_tmps_ix = -1;
3280 PL_tmps_max = REASONABLE(128);
8990e307 3281
3280af22
NIS
3282 New(54,PL_markstack,REASONABLE(32),I32);
3283 PL_markstack_ptr = PL_markstack;
3284 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3285
ce2f7c3b 3286 SET_MARK_OFFSET;
e336de0d 3287
3280af22
NIS
3288 New(54,PL_scopestack,REASONABLE(32),I32);
3289 PL_scopestack_ix = 0;
3290 PL_scopestack_max = REASONABLE(32);
79072805 3291
3280af22
NIS
3292 New(54,PL_savestack,REASONABLE(128),ANY);
3293 PL_savestack_ix = 0;
3294 PL_savestack_max = REASONABLE(128);
79072805 3295
3280af22
NIS
3296 New(54,PL_retstack,REASONABLE(16),OP*);
3297 PL_retstack_ix = 0;
3298 PL_retstack_max = REASONABLE(16);
378cc40b 3299}
33b78306 3300
2ce36478
SM
3301#undef REASONABLE
3302
76e3520e 3303STATIC void
cea2e8a9 3304S_nuke_stacks(pTHX)
6e72f9df 3305{
3280af22
NIS
3306 while (PL_curstackinfo->si_next)
3307 PL_curstackinfo = PL_curstackinfo->si_next;
3308 while (PL_curstackinfo) {
3309 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3310 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3311 Safefree(PL_curstackinfo->si_cxstack);
3312 Safefree(PL_curstackinfo);
3313 PL_curstackinfo = p;
e336de0d 3314 }
3280af22
NIS
3315 Safefree(PL_tmps_stack);
3316 Safefree(PL_markstack);
3317 Safefree(PL_scopestack);
3318 Safefree(PL_savestack);
3319 Safefree(PL_retstack);
378cc40b 3320}
33b78306 3321
76e3520e 3322STATIC void
cea2e8a9 3323S_init_lexer(pTHX)
8990e307 3324{
06039172 3325 PerlIO *tmpfp;
3280af22
NIS
3326 tmpfp = PL_rsfp;
3327 PL_rsfp = Nullfp;
3328 lex_start(PL_linestr);
3329 PL_rsfp = tmpfp;
79cb57f6 3330 PL_subname = newSVpvn("main",4);
8990e307
LW
3331}
3332
76e3520e 3333STATIC void
cea2e8a9 3334S_init_predump_symbols(pTHX)
45d8adaa 3335{
93a17b20 3336 GV *tmpgv;
af8c498a 3337 IO *io;
79072805 3338
864dbfa3 3339 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3340 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3341 GvMULTI_on(PL_stdingv);
af8c498a 3342 io = GvIOp(PL_stdingv);
a04651f4 3343 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3344 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3345 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3346 GvMULTI_on(tmpgv);
af8c498a 3347 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3348
85e6fe83 3349 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3350 GvMULTI_on(tmpgv);
af8c498a 3351 io = GvIOp(tmpgv);
a04651f4 3352 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3353 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3354 setdefout(tmpgv);
adbc6bb1 3355 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3356 GvMULTI_on(tmpgv);
af8c498a 3357 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3358
bf49b057
GS
3359 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3360 GvMULTI_on(PL_stderrgv);
3361 io = GvIOp(PL_stderrgv);
a04651f4 3362 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3363 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3364 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3365 GvMULTI_on(tmpgv);
af8c498a 3366 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3367
3280af22 3368 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3369
bf4acbe4
GS
3370 if (PL_osname)
3371 Safefree(PL_osname);
3372 PL_osname = savepv(OSNAME);
79072805 3373}
33b78306 3374
76e3520e 3375STATIC void
cea2e8a9 3376S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3377{
79072805
LW
3378 char *s;
3379 SV *sv;
3380 GV* tmpgv;
9cbac4c7 3381#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3382 char **dup_env_base = 0;
103a7189 3383 int dup_env_count = 0;
9cbac4c7 3384#endif
fe14fcc3 3385
79072805 3386 argc--,argv++; /* skip name of script */
3280af22 3387 if (PL_doswitches) {
79072805
LW
3388 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3389 if (!argv[0][1])
3390 break;
379d538a 3391 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3392 argc--,argv++;
3393 break;
3394 }
155aba94 3395 if ((s = strchr(argv[0], '='))) {
79072805 3396 *s++ = '\0';
85e6fe83 3397 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3398 }
3399 else
85e6fe83 3400 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3401 }
79072805 3402 }
3280af22
NIS
3403 PL_toptarget = NEWSV(0,0);
3404 sv_upgrade(PL_toptarget, SVt_PVFM);
3405 sv_setpvn(PL_toptarget, "", 0);
3406 PL_bodytarget = NEWSV(0,0);
3407 sv_upgrade(PL_bodytarget, SVt_PVFM);
3408 sv_setpvn(PL_bodytarget, "", 0);
3409 PL_formtarget = PL_bodytarget;
79072805 3410
bbce6d69 3411 TAINT;
155aba94 3412 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3413#ifdef MACOS_TRADITIONAL
3414 /* $0 is not majick on a Mac */
3415 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3416#else
3280af22 3417 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3418 magicname("0", "0", 1);
bf4acbe4 3419#endif
79072805 3420 }
155aba94 3421 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3422#ifdef OS2
23da6c43 3423 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3424#else
3280af22 3425 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3426#endif
155aba94 3427 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3428 GvMULTI_on(PL_argvgv);
3429 (void)gv_AVadd(PL_argvgv);
3430 av_clear(GvAVn(PL_argvgv));
79072805 3431 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3432 SV *sv = newSVpv(argv[0],0);
3433 av_push(GvAVn(PL_argvgv),sv);
3434 if (PL_widesyscalls)
e84ff256 3435 (void)sv_utf8_decode(sv);
79072805
LW
3436 }
3437 }
155aba94 3438 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3439 HV *hv;
3280af22
NIS
3440 GvMULTI_on(PL_envgv);
3441 hv = GvHVn(PL_envgv);
14befaf4 3442 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3443#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW
3444 /* Note that if the supplied env parameter is actually a copy
3445 of the global environ then it may now point to free'd memory
3446 if the environment has been modified since. To avoid this
3447 problem we treat env==NULL as meaning 'use the default'
3448 */
3449 if (!env)
3450 env = environ;
5aabfad6 3451 if (env != environ)
79072805 3452 environ[0] = Nullch;
103a7189
JH
3453#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3454 {
3455 char **env_base;
9041c2e3 3456 for (env_base = env; *env; env++)
103a7189
JH
3457