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a0d0e21e
LW
1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
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5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
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8 */
9
a0d0e21e
LW
10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW
20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
26#endif
27
0cb96387
GS
28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
29
a687059c
LW
30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW
36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
873ef191 42#ifdef PERL_OBJECT
7766f137
GS
43#define perl_construct Perl_construct
44#define perl_parse Perl_parse
45#define perl_run Perl_run
46#define perl_destruct Perl_destruct
47#define perl_free Perl_free
48#endif
32e30700 49
06d86050
GS
50#if defined(USE_THREADS)
51# define INIT_TLS_AND_INTERP \
52 STMT_START { \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
55 INIT_THREADS; \
56 ALLOC_THREAD_KEY; \
57 } \
58 } STMT_END
59#else
60# if defined(USE_ITHREADS)
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
534825c4
GS
67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050
GS
73 } STMT_END
74# else
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
83#endif
84
32e30700
GS
85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
7766f137
GS
87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
7766f137
GS
94#ifdef PERL_OBJECT
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
06d86050 97 INIT_TLS_AND_INTERP;
7766f137 98#else
32e30700
GS
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 101 INIT_TLS_AND_INTERP;
32e30700
GS
102 Zero(my_perl, 1, PerlInterpreter);
103 PL_Mem = ipM;
7766f137
GS
104 PL_MemShared = ipMS;
105 PL_MemParse = ipMP;
32e30700
GS
106 PL_Env = ipE;
107 PL_StdIO = ipStd;
108 PL_LIO = ipLIO;
109 PL_Dir = ipD;
110 PL_Sock = ipS;
111 PL_Proc = ipP;
7766f137
GS
112#endif
113
32e30700
GS
114 return my_perl;
115}
116#else
954c1994
GS
117
118/*
119=for apidoc perl_alloc
120
121Allocates a new Perl interpreter. See L<perlembed>.
122
123=cut
124*/
125
93a17b20 126PerlInterpreter *
cea2e8a9 127perl_alloc(void)
79072805 128{
cea2e8a9 129 PerlInterpreter *my_perl;
79072805 130
54aff467 131 /* New() needs interpreter, so call malloc() instead */
e8ee3774 132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 133
06d86050 134 INIT_TLS_AND_INTERP;
dedcbb81 135 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 136 return my_perl;
79072805 137}
32e30700 138#endif /* PERL_IMPLICIT_SYS */
79072805 139
954c1994
GS
140/*
141=for apidoc perl_construct
142
143Initializes a new Perl interpreter. See L<perlembed>.
144
145=cut
146*/
147
79072805 148void
0cb96387 149perl_construct(pTHXx)
79072805 150{
a863c7d1 151#ifdef USE_THREADS
a863c7d1 152#ifndef FAKE_THREADS
e1f15930 153 struct perl_thread *thr = NULL;
a863c7d1
MB
154#endif /* FAKE_THREADS */
155#endif /* USE_THREADS */
ba869deb 156
8990e307 157#ifdef MULTIPLICITY
54aff467 158 init_interp();
ac27b0f5 159 PL_perl_destruct_level = 1;
54aff467
GS
160#else
161 if (PL_perl_destruct_level > 0)
162 init_interp();
163#endif
164
33f46ff6 165 /* Init the real globals (and main thread)? */
3280af22 166 if (!PL_linestr) {
1feb2720 167#ifdef USE_THREADS
533c011a 168 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB
169 /*
170 * Safe to use basic SV functions from now on (though
171 * not things like mortals or tainting yet).
172 */
533c011a
NIS
173 MUTEX_INIT(&PL_eval_mutex);
174 COND_INIT(&PL_eval_cond);
175 MUTEX_INIT(&PL_threads_mutex);
176 COND_INIT(&PL_nthreads_cond);
ba869deb 177# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 178 MUTEX_INIT(&PL_svref_mutex);
ba869deb 179# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 180
5ff3f7a4 181 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS
182 MUTEX_INIT(&PL_sv_lock_mutex);
183 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 184
199100c8 185 thr = init_main_thread();
11343788
MB
186#endif /* USE_THREADS */
187
14dd3ad8 188#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 189 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 190#endif
312caa8e 191
2aea9f8a
GS
192 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193
3280af22
NIS
194 PL_linestr = NEWSV(65,79);
195 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 196
3280af22 197 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
198 /* set read-only and try to insure than we wont see REFCNT==0
199 very often */
200
3280af22
NIS
201 SvREADONLY_on(&PL_sv_undef);
202 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 203
3280af22
NIS
204 sv_setpv(&PL_sv_no,PL_No);
205 SvNV(&PL_sv_no);
206 SvREADONLY_on(&PL_sv_no);
207 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 208
3280af22
NIS
209 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvNV(&PL_sv_yes);
211 SvREADONLY_on(&PL_sv_yes);
212 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 213 }
79072805 214
76e3520e
GS
215#ifdef PERL_OBJECT
216 /* TODO: */
6b88bc9c 217 /* PL_sighandlerp = sighandler; */
76e3520e 218#else
cea2e8a9 219 PL_sighandlerp = Perl_sighandler;
76e3520e 220#endif
3280af22 221 PL_pidstatus = newHV();
44a8e56a 222
79072805
LW
223#ifdef MSDOS
224 /*
225 * There is no way we can refer to them from Perl so close them to save
226 * space. The other alternative would be to provide STDAUX and STDPRN
227 * filehandles.
228 */
2b96b0a5
JH
229 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
230 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW
231#endif
232 }
233
79cb57f6 234 PL_nrs = newSVpvn("\n", 1);
3280af22 235 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 236
cea2e8a9 237 init_stacks();
79072805 238
748a9306 239 init_ids();
3280af22 240 PL_lex_state = LEX_NOTPARSING;
a5f75d66 241
312caa8e 242 JMPENV_BOOTSTRAP;
f86702cc
PP
243 STATUS_ALL_SUCCESS;
244
0672f40e 245 init_i18nl10n(1);
36477c24 246 SET_NUMERIC_STANDARD();
0b5b802d 247
a7cb1f99
GS
248 {
249 U8 *s;
250 PL_patchlevel = NEWSV(0,4);
155aba94 251 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 252 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 253 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 254 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS
255 /* Build version strings using "native" characters */
256 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
257 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
258 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS
259 *s = '\0';
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 264#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 265 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 266#endif
a7cb1f99
GS
267 ;
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
271 }
79072805 272
ab821d7f 273#if defined(LOCAL_PATCH_COUNT)
3280af22 274 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
275#endif
276
52853b95
GS
277#ifdef HAVE_INTERP_INTERN
278 sys_intern_init();
279#endif
280
4b556e6c 281 PerlIO_init(); /* Hook to IO system */
760ac839 282
3280af22
NIS
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 285 PL_errors = newSVpvn("",0);
1fcf4c12
AB
286#ifdef USE_ITHREADS
287 PL_regex_padav = newAV();
288#endif
e5dd39fc
AB
289#ifdef USE_REENTRANT_API
290 New(31337, PL_reentrant_buffer,1, REBUF);
291 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
292#endif
8990e307 293 ENTER;
79072805
LW
294}
295
954c1994
GS
296/*
297=for apidoc perl_destruct
298
299Shuts down a Perl interpreter. See L<perlembed>.
300
301=cut
302*/
303
79072805 304void
0cb96387 305perl_destruct(pTHXx)
79072805 306{
748a9306 307 int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 308 HV *hv;
1f2bfc8a 309#ifdef USE_THREADS
33f46ff6 310 Thread t;
cea2e8a9 311 dTHX;
1f2bfc8a 312#endif /* USE_THREADS */
8990e307 313
7766f137
GS
314 /* wait for all pseudo-forked children to finish */
315 PERL_WAIT_FOR_CHILDREN;
316
11343788 317#ifdef USE_THREADS
0f15f207 318#ifndef FAKE_THREADS
8023c3ce
MB
319 /* Pass 1 on any remaining threads: detach joinables, join zombies */
320 retry_cleanup:
533c011a 321 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 322 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 323 "perl_destruct: waiting for %d threads...\n",
533c011a 324 PL_nthreads - 1));
33f46ff6 325 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB
326 MUTEX_LOCK(&t->mutex);
327 switch (ThrSTATE(t)) {
328 AV *av;
c7848ba1 329 case THRf_ZOMBIE:
bf49b057 330 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 331 "perl_destruct: joining zombie %p\n", t));
605e5515
MB
332 ThrSETSTATE(t, THRf_DEAD);
333 MUTEX_UNLOCK(&t->mutex);
533c011a 334 PL_nthreads--;
8023c3ce
MB
335 /*
336 * The SvREFCNT_dec below may take a long time (e.g. av
337 * may contain an object scalar whose destructor gets
338 * called) so we have to unlock threads_mutex and start
339 * all over again.
340 */
533c011a 341 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 342 JOIN(t, &av);
605e5515 343 SvREFCNT_dec((SV*)av);
bf49b057 344 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 345 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 346 goto retry_cleanup;
c7848ba1 347 case THRf_R_JOINABLE:
bf49b057 348 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
349 "perl_destruct: detaching thread %p\n", t));
350 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 351 /*
c7848ba1
MB
352 * We unlock threads_mutex and t->mutex in the opposite order
353 * from which we locked them just so that DETACH won't
354 * deadlock if it panics. It's only a breach of good style
355 * not a bug since they are unlocks not locks.
356 */
533c011a 357 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB
358 DETACH(t);
359 MUTEX_UNLOCK(&t->mutex);
8023c3ce 360 goto retry_cleanup;
c7848ba1 361 default:
bf49b057 362 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
363 "perl_destruct: ignoring %p (state %u)\n",
364 t, ThrSTATE(t)));
365 MUTEX_UNLOCK(&t->mutex);
c7848ba1 366 /* fall through and out */
33f46ff6
MB
367 }
368 }
8023c3ce
MB
369 /* We leave the above "Pass 1" loop with threads_mutex still locked */
370
371 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 372 while (PL_nthreads > 1)
11343788 373 {
bf49b057 374 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 375 "perl_destruct: final wait for %d threads\n",
533c011a
NIS
376 PL_nthreads - 1));
377 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB
378 }
379 /* At this point, we're the last thread */
533c011a 380 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 381 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS
382 MUTEX_DESTROY(&PL_threads_mutex);
383 COND_DESTROY(&PL_nthreads_cond);
b57a092c 384 PL_nthreads--;
0f15f207 385#endif /* !defined(FAKE_THREADS) */
11343788
MB
386#endif /* USE_THREADS */
387
3280af22 388 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
389#ifdef DEBUGGING
390 {
391 char *s;
155aba94 392 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc
PP
393 int i = atoi(s);
394 if (destruct_level < i)
395 destruct_level = i;
396 }
4633a7c4
LW
397 }
398#endif
399
8990e307 400 LEAVE;
26f423df
AB
401 {
402 dJMPENV;
403 int x = 0;
404 JMPENV_PUSH(x);
405 if (PL_endav && !PL_minus_c)
406 call_list(PL_scopestack_ix, PL_endav);
407 JMPENV_POP;
408 }
a0d0e21e
LW
409 FREETMPS;
410
ff0cee69
PP
411 /* We must account for everything. */
412
413 /* Destroy the main CV and syntax tree */
3280af22
NIS
414 if (PL_main_root) {
415 PL_curpad = AvARRAY(PL_comppad);
416 op_free(PL_main_root);
417 PL_main_root = Nullop;
a0d0e21e 418 }
3280af22
NIS
419 PL_curcop = &PL_compiling;
420 PL_main_start = Nullop;
421 SvREFCNT_dec(PL_main_cv);
422 PL_main_cv = Nullcv;
24d3c518 423 PL_dirty = TRUE;
ff0cee69 424
13621cfb
NIS
425 /* Tell PerlIO we are about to tear things apart in case
426 we have layers which are using resources that should
427 be cleaned up now.
428 */
429
430 PerlIO_destruct(aTHX);
431
3280af22 432 if (PL_sv_objcount) {
a0d0e21e
LW
433 /*
434 * Try to destruct global references. We do this first so that the
435 * destructors and destructees still exist. Some sv's might remain.
436 * Non-referenced objects are on their own.
437 */
a0d0e21e 438 sv_clean_objs();
8990e307
LW
439 }
440
5cd24f17 441 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
442 SvREFCNT_dec(PL_warnhook);
443 PL_warnhook = Nullsv;
444 SvREFCNT_dec(PL_diehook);
445 PL_diehook = Nullsv;
5cd24f17 446
4b556e6c 447 /* call exit list functions */
3280af22 448 while (PL_exitlistlen-- > 0)
0cb96387 449 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 450
3280af22 451 Safefree(PL_exitlist);
4b556e6c 452
a0d0e21e 453 if (destruct_level == 0){
8990e307 454
a0d0e21e 455 DEBUG_P(debprofdump());
ac27b0f5 456
a0d0e21e
LW
457 /* The exit() function will do everything that needs doing. */
458 return;
459 }
5dd60ef7 460
551a8b83
JH
461 /* jettison our possibly duplicated environment */
462
463#ifdef USE_ENVIRON_ARRAY
464 if (environ != PL_origenviron) {
465 I32 i;
466
467 for (i = 0; environ[i]; i++)
4b420006
JH
468 safesysfree(environ[i]);
469 /* Must use safesysfree() when working with environ. */
470 safesysfree(environ);
551a8b83
JH
471
472 environ = PL_origenviron;
473 }
474#endif
475
5f8cb046
DM
476#ifdef USE_ITHREADS
477 /* the syntax tree is shared between clones
478 * so op_free(PL_main_root) only ReREFCNT_dec's
479 * REGEXPs in the parent interpreter
480 * we need to manually ReREFCNT_dec for the clones
481 */
482 {
483 I32 i = AvFILLp(PL_regex_padav) + 1;
484 SV **ary = AvARRAY(PL_regex_padav);
485
486 while (i) {
35061a7e
DM
487 SV *resv = ary[--i];
488 REGEXP *re = (REGEXP *)SvIVX(resv);
489
490 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 491 /* this is PL_reg_curpm, already freed
35061a7e
DM
492 * flag is set in regexec.c:S_regtry
493 */
494 SvFLAGS(resv) &= ~SVf_BREAK;
495 }
496 else {
5f8cb046
DM
497 ReREFCNT_dec(re);
498 }
499 }
500 }
501 SvREFCNT_dec(PL_regex_padav);
502 PL_regex_padav = Nullav;
503 PL_regex_pad = NULL;
504#endif
505
5f05dabc
PP
506 /* loosen bonds of global variables */
507
3280af22
NIS
508 if(PL_rsfp) {
509 (void)PerlIO_close(PL_rsfp);
510 PL_rsfp = Nullfp;
8ebc5c01
PP
511 }
512
513 /* Filters for program text */
3280af22
NIS
514 SvREFCNT_dec(PL_rsfp_filters);
515 PL_rsfp_filters = Nullav;
8ebc5c01
PP
516
517 /* switches */
3280af22
NIS
518 PL_preprocess = FALSE;
519 PL_minus_n = FALSE;
520 PL_minus_p = FALSE;
521 PL_minus_l = FALSE;
522 PL_minus_a = FALSE;
523 PL_minus_F = FALSE;
524 PL_doswitches = FALSE;
599cee73 525 PL_dowarn = G_WARN_OFF;
3280af22
NIS
526 PL_doextract = FALSE;
527 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
528 PL_unsafe = FALSE;
529
530 Safefree(PL_inplace);
531 PL_inplace = Nullch;
a7cb1f99 532 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
533
534 if (PL_e_script) {
535 SvREFCNT_dec(PL_e_script);
536 PL_e_script = Nullsv;
8ebc5c01
PP
537 }
538
bc0a45ed
DM
539 while (--PL_origargc >= 0) {
540 Safefree(PL_origargv[PL_origargc]);
541 }
542 Safefree(PL_origargv);
543
8ebc5c01
PP
544 /* magical thingies */
545
7889fe52
NIS
546 SvREFCNT_dec(PL_ofs_sv); /* $, */
547 PL_ofs_sv = Nullsv;
5f05dabc 548
7889fe52
NIS
549 SvREFCNT_dec(PL_ors_sv); /* $\ */
550 PL_ors_sv = Nullsv;
8ebc5c01 551
3280af22
NIS
552 SvREFCNT_dec(PL_rs); /* $/ */
553 PL_rs = Nullsv;
dc92893f 554
3280af22
NIS
555 SvREFCNT_dec(PL_nrs); /* $/ helper */
556 PL_nrs = Nullsv;
5f05dabc 557
d33b2eba
GS
558 PL_multiline = 0; /* $* */
559 Safefree(PL_osname); /* $^O */
560 PL_osname = Nullch;
5f05dabc 561
3280af22
NIS
562 SvREFCNT_dec(PL_statname);
563 PL_statname = Nullsv;
564 PL_statgv = Nullgv;
5f05dabc 565
8ebc5c01
PP
566 /* defgv, aka *_ should be taken care of elsewhere */
567
8ebc5c01 568 /* clean up after study() */
3280af22
NIS
569 SvREFCNT_dec(PL_lastscream);
570 PL_lastscream = Nullsv;
571 Safefree(PL_screamfirst);
572 PL_screamfirst = 0;
573 Safefree(PL_screamnext);
574 PL_screamnext = 0;
8ebc5c01 575
7d5ea4e7
GS
576 /* float buffer */
577 Safefree(PL_efloatbuf);
578 PL_efloatbuf = Nullch;
579 PL_efloatsize = 0;
580
8ebc5c01 581 /* startup and shutdown function lists */
3280af22
NIS
582 SvREFCNT_dec(PL_beginav);
583 SvREFCNT_dec(PL_endav);
7d30b5c4 584 SvREFCNT_dec(PL_checkav);
3280af22
NIS
585 SvREFCNT_dec(PL_initav);
586 PL_beginav = Nullav;
587 PL_endav = Nullav;
7d30b5c4 588 PL_checkav = Nullav;
3280af22 589 PL_initav = Nullav;
5618dfe8 590
8ebc5c01 591 /* shortcuts just get cleared */
3280af22 592 PL_envgv = Nullgv;
3280af22
NIS
593 PL_incgv = Nullgv;
594 PL_hintgv = Nullgv;
595 PL_errgv = Nullgv;
596 PL_argvgv = Nullgv;
597 PL_argvoutgv = Nullgv;
598 PL_stdingv = Nullgv;
bf49b057 599 PL_stderrgv = Nullgv;
3280af22
NIS
600 PL_last_in_gv = Nullgv;
601 PL_replgv = Nullgv;
5c831c24 602 PL_debstash = Nullhv;
8ebc5c01
PP
603
604 /* reset so print() ends up where we expect */
605 setdefout(Nullgv);
5c831c24 606
7a1c5554
GS
607 SvREFCNT_dec(PL_argvout_stack);
608 PL_argvout_stack = Nullav;
8ebc5c01 609
5c831c24
GS
610 SvREFCNT_dec(PL_modglobal);
611 PL_modglobal = Nullhv;
612 SvREFCNT_dec(PL_preambleav);
613 PL_preambleav = Nullav;
614 SvREFCNT_dec(PL_subname);
615 PL_subname = Nullsv;
616 SvREFCNT_dec(PL_linestr);
617 PL_linestr = Nullsv;
618 SvREFCNT_dec(PL_pidstatus);
619 PL_pidstatus = Nullhv;
620 SvREFCNT_dec(PL_toptarget);
621 PL_toptarget = Nullsv;
622 SvREFCNT_dec(PL_bodytarget);
623 PL_bodytarget = Nullsv;
624 PL_formtarget = Nullsv;
625
d33b2eba 626 /* free locale stuff */
b9582b6a 627#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
628 Safefree(PL_collation_name);
629 PL_collation_name = Nullch;
b9582b6a 630#endif
d33b2eba 631
b9582b6a 632#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
633 Safefree(PL_numeric_name);
634 PL_numeric_name = Nullch;
a453c169 635 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 636#endif
d33b2eba 637
5c831c24
GS
638 /* clear utf8 character classes */
639 SvREFCNT_dec(PL_utf8_alnum);
640 SvREFCNT_dec(PL_utf8_alnumc);
641 SvREFCNT_dec(PL_utf8_ascii);
642 SvREFCNT_dec(PL_utf8_alpha);
643 SvREFCNT_dec(PL_utf8_space);
644 SvREFCNT_dec(PL_utf8_cntrl);
645 SvREFCNT_dec(PL_utf8_graph);
646 SvREFCNT_dec(PL_utf8_digit);
647 SvREFCNT_dec(PL_utf8_upper);
648 SvREFCNT_dec(PL_utf8_lower);
649 SvREFCNT_dec(PL_utf8_print);
650 SvREFCNT_dec(PL_utf8_punct);
651 SvREFCNT_dec(PL_utf8_xdigit);
652 SvREFCNT_dec(PL_utf8_mark);
653 SvREFCNT_dec(PL_utf8_toupper);
654 SvREFCNT_dec(PL_utf8_tolower);
655 PL_utf8_alnum = Nullsv;
656 PL_utf8_alnumc = Nullsv;
657 PL_utf8_ascii = Nullsv;
658 PL_utf8_alpha = Nullsv;
659 PL_utf8_space = Nullsv;
660 PL_utf8_cntrl = Nullsv;
661 PL_utf8_graph = Nullsv;
662 PL_utf8_digit = Nullsv;
663 PL_utf8_upper = Nullsv;
664 PL_utf8_lower = Nullsv;
665 PL_utf8_print = Nullsv;
666 PL_utf8_punct = Nullsv;
667 PL_utf8_xdigit = Nullsv;
668 PL_utf8_mark = Nullsv;
669 PL_utf8_toupper = Nullsv;
670 PL_utf8_totitle = Nullsv;
671 PL_utf8_tolower = Nullsv;
672
971a9dd3
GS
673 if (!specialWARN(PL_compiling.cop_warnings))
674 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 675 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
676 if (!specialCopIO(PL_compiling.cop_io))
677 SvREFCNT_dec(PL_compiling.cop_io);
678 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS
679#ifdef USE_ITHREADS
680 Safefree(CopFILE(&PL_compiling));
681 CopFILE(&PL_compiling) = Nullch;
682 Safefree(CopSTASHPV(&PL_compiling));
683#else
01724ea0 684 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS
685 CopFILEGV(&PL_compiling) = Nullgv;
686 /* cop_stash is not refcounted */
01724ea0 687#endif
5c831c24 688
a0d0e21e 689 /* Prepare to destruct main symbol table. */
5f05dabc 690
3280af22
NIS
691 hv = PL_defstash;
692 PL_defstash = 0;
a0d0e21e 693 SvREFCNT_dec(hv);
5c831c24
GS
694 SvREFCNT_dec(PL_curstname);
695 PL_curstname = Nullsv;
a0d0e21e 696
5a844595
GS
697 /* clear queued errors */
698 SvREFCNT_dec(PL_errors);
699 PL_errors = Nullsv;
700
a0d0e21e 701 FREETMPS;
0453d815 702 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 703 if (PL_scopestack_ix != 0)
0453d815
PM
704 Perl_warner(aTHX_ WARN_INTERNAL,
705 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
706 (long)PL_scopestack_ix);
707 if (PL_savestack_ix != 0)
0453d815
PM
708 Perl_warner(aTHX_ WARN_INTERNAL,
709 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
710 (long)PL_savestack_ix);
711 if (PL_tmps_floor != -1)
0453d815 712 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 713 (long)PL_tmps_floor + 1);
a0d0e21e 714 if (cxstack_ix != -1)
0453d815 715 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 716 (long)cxstack_ix + 1);
a0d0e21e 717 }
8990e307
LW
718
719 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 720 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 721 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
722
723 /* the 2 is for PL_fdpid and PL_strtab */
724 while (PL_sv_count > 2 && sv_clean_all())
725 ;
726
d33b2eba
GS
727 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
728 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
729 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
730 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 731
d4777f27
GS
732 AvREAL_off(PL_fdpid); /* no surviving entries */
733 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
734 PL_fdpid = Nullav;
735
6c644e78
GS
736#ifdef HAVE_INTERP_INTERN
737 sys_intern_clear();
738#endif
739
6e72f9df
PP
740 /* Destruct the global string table. */
741 {
742 /* Yell and reset the HeVAL() slots that are still holding refcounts,
743 * so that sv_free() won't fail on them.
744 */
745 I32 riter;
746 I32 max;
747 HE *hent;
748 HE **array;
749
750 riter = 0;
3280af22
NIS
751 max = HvMAX(PL_strtab);
752 array = HvARRAY(PL_strtab);
6e72f9df
PP
753 hent = array[0];
754 for (;;) {
0453d815
PM
755 if (hent && ckWARN_d(WARN_INTERNAL)) {
756 Perl_warner(aTHX_ WARN_INTERNAL,
757 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
758 HeVAL(hent) - Nullsv, HeKEY(hent));
759 HeVAL(hent) = Nullsv;
760 hent = HeNEXT(hent);
761 }
762 if (!hent) {
763 if (++riter > max)
764 break;
765 hent = array[riter];
766 }
767 }
768 }
3280af22 769 SvREFCNT_dec(PL_strtab);
6e72f9df 770
e652bb2f 771#ifdef USE_ITHREADS
a0739874
DM
772 /* free the pointer table used for cloning */
773 ptr_table_free(PL_ptr_table);
53186e96 774#endif
a0739874 775
d33b2eba
GS
776 /* free special SVs */
777
778 SvREFCNT(&PL_sv_yes) = 0;
779 sv_clear(&PL_sv_yes);
780 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 781 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
782
783 SvREFCNT(&PL_sv_no) = 0;
784 sv_clear(&PL_sv_no);
785 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 786 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS
787
788 SvREFCNT(&PL_sv_undef) = 0;
789 SvREADONLY_off(&PL_sv_undef);
d33b2eba 790
0453d815
PM
791 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
792 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 793
3280af22 794 Safefree(PL_origfilename);
3280af22 795 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
796 if (PL_reg_curpm)
797 Safefree(PL_reg_curpm);
82ba1be6 798 Safefree(PL_reg_poscache);
3280af22
NIS
799 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
800 Safefree(PL_op_mask);
cf36064f
GS
801 Safefree(PL_psig_ptr);
802 Safefree(PL_psig_name);
2c2666fc 803 Safefree(PL_bitcount);
ce08f86c 804 Safefree(PL_psig_pend);
6e72f9df 805 nuke_stacks();
3280af22 806 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 807
a0d0e21e 808 DEBUG_P(debprofdump());
11343788 809#ifdef USE_THREADS
5f08fbcd 810 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
811 MUTEX_DESTROY(&PL_sv_mutex);
812 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 813 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 814 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 815 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
816#ifdef EMULATE_ATOMIC_REFCOUNTS
817 MUTEX_DESTROY(&PL_svref_mutex);
818#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 819
8023c3ce 820 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
821 Safefree(SvPVX(PL_thrsv));
822 Safefree(SvANY(PL_thrsv));
823 Safefree(PL_thrsv);
824 PL_thrsv = Nullsv;
8023c3ce 825#endif /* USE_THREADS */
d33b2eba 826
e5dd39fc
AB
827#ifdef USE_REENTRANT_API
828 Safefree(PL_reentrant_buffer->tmbuff);
829 Safefree(PL_reentrant_buffer);
830#endif
831
612f20c3
GS
832 sv_free_arenas();
833
fc36a67e
PP
834 /* As the absolutely last thing, free the non-arena SV for mess() */
835
3280af22 836 if (PL_mess_sv) {
9c63abab
GS
837 /* it could have accumulated taint magic */
838 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
839 MAGIC* mg;
840 MAGIC* moremagic;
841 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
842 moremagic = mg->mg_moremagic;
14befaf4
DM
843 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
844 && mg->mg_len >= 0)
9c63abab
GS
845 Safefree(mg->mg_ptr);
846 Safefree(mg);
847 }
848 }
fc36a67e 849 /* we know that type >= SVt_PV */
155aba94 850 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
851 Safefree(SvPVX(PL_mess_sv));
852 Safefree(SvANY(PL_mess_sv));
853 Safefree(PL_mess_sv);
854 PL_mess_sv = Nullsv;
fc36a67e 855 }
79072805
LW
856}
857
954c1994
GS
858/*
859=for apidoc perl_free
860
861Releases a Perl interpreter. See L<perlembed>.
862
863=cut
864*/
865
79072805 866void
0cb96387 867perl_free(pTHXx)
79072805 868{
c5be433b 869#if defined(PERL_OBJECT)
7f0d82f7 870 PerlMem_free(this);
76e3520e 871#else
2986a63f 872# if defined(WIN32) || defined(NETWARE)
ce3e5b80 873# if defined(PERL_IMPLICIT_SYS)
2986a63f
JH
874 #ifdef NETWARE
875 void *host = nw_internal_host;
876 #else
877 void *host = w32_internal_host;
878 #endif
879 #ifndef NETWARE
880 if (PerlProc_lasthost()) {
ce08f86c 881 PerlIO_cleanup();
2986a63f
JH
882 }
883 #endif
7f0d82f7 884 PerlMem_free(aTHXx);
2986a63f
JH
885 #ifdef NETWARE
886 nw5_delete_internal_host(host);
887 #else
888 win32_delete_internal_host(host);
889 #endif
ce3e5b80 890#else
ce08f86c 891 PerlIO_cleanup();
ce3e5b80
NIS
892 PerlMem_free(aTHXx);
893#endif
1c0ca838
GS
894# else
895 PerlMem_free(aTHXx);
896# endif
76e3520e 897#endif
79072805
LW
898}
899
4b556e6c 900void
864dbfa3 901Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 902{
3280af22
NIS
903 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
904 PL_exitlist[PL_exitlistlen].fn = fn;
905 PL_exitlist[PL_exitlistlen].ptr = ptr;
906 ++PL_exitlistlen;
4b556e6c
JD
907}
908
954c1994
GS
909/*
910=for apidoc perl_parse
911
912Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
913
914=cut
915*/
916
79072805 917int
0cb96387 918perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 919{
6224f72b 920 I32 oldscope;
6224f72b 921 int ret;
db36c5a1 922 dJMPENV;
cea2e8a9
GS
923#ifdef USE_THREADS
924 dTHX;
925#endif
8d063cd8 926
a687059c
LW
927#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
928#ifdef IAMSUID
929#undef IAMSUID
cea2e8a9 930 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
931setuid perl scripts securely.\n");
932#endif
933#endif
934
8f1f23e8 935#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df
PP
936 _dyld_lookup_and_bind
937 ("__environ", (unsigned long *) &environ_pointer, NULL);
938#endif /* environ */
939
3280af22 940 PL_origargc = argc;
bc0a45ed
DM
941 {
942 /* we copy rather than point to argv
943 * since perl_clone will copy and perl_destruct
944 * has no way of knowing if we've made a copy or
945 * just point to argv
946 */
947 int i = PL_origargc;
948 New(0, PL_origargv, i+1, char*);
949 PL_origargv[i] = '\0';
950 while (i-- > 0) {
951 PL_origargv[i] = savepv(argv[i]);
952 }
953 }
954
fa6a1c44 955#ifdef USE_ENVIRON_ARRAY
3280af22 956 PL_origenviron = environ;
a0d0e21e
LW
957#endif
958
3280af22 959 if (PL_do_undump) {
a0d0e21e
LW
960
961 /* Come here if running an undumped a.out. */
962
3280af22
NIS
963 PL_origfilename = savepv(argv[0]);
964 PL_do_undump = FALSE;
a0d0e21e 965 cxstack_ix = -1; /* start label stack again */
748a9306 966 init_ids();
a0d0e21e
LW
967 init_postdump_symbols(argc,argv,env);
968 return 0;
969 }
970
3280af22
NIS
971 if (PL_main_root) {
972 PL_curpad = AvARRAY(PL_comppad);
973 op_free(PL_main_root);
974 PL_main_root = Nullop;
ff0cee69 975 }
3280af22
NIS
976 PL_main_start = Nullop;
977 SvREFCNT_dec(PL_main_cv);
978 PL_main_cv = Nullcv;
79072805 979
3280af22
NIS
980 time(&PL_basetime);
981 oldscope = PL_scopestack_ix;
599cee73 982 PL_dowarn = G_WARN_OFF;
f86702cc 983
14dd3ad8
GS
984#ifdef PERL_FLEXIBLE_EXCEPTIONS
985 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
986#else
987 JMPENV_PUSH(ret);
988#endif
6224f72b 989 switch (ret) {
312caa8e 990 case 0:
14dd3ad8
GS
991#ifndef PERL_FLEXIBLE_EXCEPTIONS
992 parse_body(env,xsinit);
993#endif
7d30b5c4
GS
994 if (PL_checkav)
995 call_list(oldscope, PL_checkav);
14dd3ad8
GS
996 ret = 0;
997 break;
6224f72b
GS
998 case 1:
999 STATUS_ALL_FAILURE;
1000 /* FALL THROUGH */
1001 case 2:
1002 /* my_exit() was called */
3280af22 1003 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1004 LEAVE;
1005 FREETMPS;
3280af22 1006 PL_curstash = PL_defstash;
7d30b5c4
GS
1007 if (PL_checkav)
1008 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1009 ret = STATUS_NATIVE_EXPORT;
1010 break;
6224f72b 1011 case 3:
bf49b057 1012 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1013 ret = 1;
1014 break;
6224f72b 1015 }
14dd3ad8
GS
1016 JMPENV_POP;
1017 return ret;
1018}
1019
1020#ifdef PERL_FLEXIBLE_EXCEPTIONS
1021STATIC void *
1022S_vparse_body(pTHX_ va_list args)
1023{
1024 char **env = va_arg(args, char**);
1025 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1026
1027 return parse_body(env, xsinit);
312caa8e 1028}
14dd3ad8 1029#endif
312caa8e
CS
1030
1031STATIC void *
14dd3ad8 1032S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1033{
312caa8e
CS
1034 int argc = PL_origargc;
1035 char **argv = PL_origargv;
312caa8e
CS
1036 char *scriptname = NULL;
1037 int fdscript = -1;
1038 VOL bool dosearch = FALSE;
1039 char *validarg = "";
1040 AV* comppadlist;
1041 register SV *sv;
1042 register char *s;
659ca9ea 1043 char *popts, *cddir = Nullch;
312caa8e 1044
3280af22 1045 sv_setpvn(PL_linestr,"",0);
79cb57f6 1046 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
1047 SAVEFREESV(sv);
1048 init_main_stash();
54310121 1049
6224f72b
GS
1050 for (argc--,argv++; argc > 0; argc--,argv++) {
1051 if (argv[0][0] != '-' || !argv[0][1])
1052 break;
1053#ifdef DOSUID
1054 if (*validarg)
1055 validarg = " PHOOEY ";
1056 else
1057 validarg = argv[0];
13281fa4 1058#endif
6224f72b
GS
1059 s = argv[0]+1;
1060 reswitch:
1061 switch (*s) {
729a02f2
GS
1062 case 'C':
1063#ifdef WIN32
c0932edc 1064 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
1065 /* FALL THROUGH */
1066#endif
1d5472a9
GS
1067#ifndef PERL_STRICT_CR
1068 case '\r':
1069#endif
6224f72b
GS
1070 case ' ':
1071 case '0':
1072 case 'F':
1073 case 'a':
1074 case 'c':
1075 case 'd':
1076 case 'D':
1077 case 'h':
1078 case 'i':
1079 case 'l':
1080 case 'M':
1081 case 'm':
1082 case 'n':
1083 case 'p':
1084 case 's':
1085 case 'u':
1086 case 'U':
1087 case 'v':
599cee73
PM
1088 case 'W':
1089 case 'X':
6224f72b 1090 case 'w':
155aba94 1091 if ((s = moreswitches(s)))
6224f72b
GS
1092 goto reswitch;
1093 break;
33b78306 1094
6224f72b 1095 case 'T':
3280af22 1096 PL_tainting = TRUE;
6224f72b
GS
1097 s++;
1098 goto reswitch;
f86702cc 1099
6224f72b 1100 case 'e':
bf4acbe4
GS
1101#ifdef MACOS_TRADITIONAL
1102 /* ignore -e for Dev:Pseudo argument */
1103 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1104 break;
bf4acbe4 1105#endif
3280af22 1106 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1107 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1108 if (!PL_e_script) {
79cb57f6 1109 PL_e_script = newSVpvn("",0);
0cb96387 1110 filter_add(read_e_script, NULL);
6224f72b
GS
1111 }
1112 if (*++s)
3280af22 1113 sv_catpv(PL_e_script, s);
6224f72b 1114 else if (argv[1]) {
3280af22 1115 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1116 argc--,argv++;
1117 }
1118 else
cea2e8a9 1119 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1120 sv_catpv(PL_e_script, "\n");
6224f72b 1121 break;
afe37c7d 1122
6224f72b
GS
1123 case 'I': /* -I handled both here and in moreswitches() */
1124 forbid_setid("-I");
1125 if (!*++s && (s=argv[1]) != Nullch) {
1126 argc--,argv++;
1127 }
6224f72b 1128 if (s && *s) {
0df16ed7
GS
1129 char *p;
1130 STRLEN len = strlen(s);
1131 p = savepvn(s, len);
9c8a64f0 1132 incpush(p, TRUE, TRUE);
0df16ed7
GS
1133 sv_catpvn(sv, "-I", 2);
1134 sv_catpvn(sv, p, len);
1135 sv_catpvn(sv, " ", 1);
6224f72b 1136 Safefree(p);
0df16ed7
GS
1137 }
1138 else
a67e862a 1139 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1140 break;
1141 case 'P':
1142 forbid_setid("-P");
3280af22 1143 PL_preprocess = TRUE;
6224f72b
GS
1144 s++;
1145 goto reswitch;
1146 case 'S':
1147 forbid_setid("-S");
1148 dosearch = TRUE;
1149 s++;
1150 goto reswitch;
1151 case 'V':
3280af22
NIS
1152 if (!PL_preambleav)
1153 PL_preambleav = newAV();
1154 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1155 if (*++s != ':') {
3280af22 1156 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1157#ifdef VMS
6b88bc9c 1158 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1159#else
3280af22 1160 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1161#endif
3280af22 1162 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1163# ifdef DEBUGGING
3280af22 1164 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1165# endif
6224f72b 1166# ifdef MULTIPLICITY
8f872242 1167 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1168# endif
b363f7ed
GS
1169# ifdef USE_THREADS
1170 sv_catpv(PL_Sv," USE_THREADS");
1171# endif
ac5e8965
JH
1172# ifdef USE_ITHREADS
1173 sv_catpv(PL_Sv," USE_ITHREADS");
1174# endif
10cc9d2a
JH
1175# ifdef USE_64_BIT_INT
1176 sv_catpv(PL_Sv," USE_64_BIT_INT");
1177# endif
1178# ifdef USE_64_BIT_ALL
1179 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1180# endif
1181# ifdef USE_LONG_DOUBLE
1182 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1183# endif
53430762
JH
1184# ifdef USE_LARGE_FILES
1185 sv_catpv(PL_Sv," USE_LARGE_FILES");
1186# endif
ac5e8965
JH
1187# ifdef USE_SOCKS
1188 sv_catpv(PL_Sv," USE_SOCKS");
1189# endif
b363f7ed
GS
1190# ifdef PERL_OBJECT
1191 sv_catpv(PL_Sv," PERL_OBJECT");
1192# endif
1193# ifdef PERL_IMPLICIT_CONTEXT
1194 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1195# endif
1196# ifdef PERL_IMPLICIT_SYS
1197 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1198# endif
3280af22 1199 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1200
6224f72b
GS
1201#if defined(LOCAL_PATCH_COUNT)
1202 if (LOCAL_PATCH_COUNT > 0) {
1203 int i;
3280af22 1204 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1205 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1206 if (PL_localpatches[i])
cea2e8a9 1207 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1208 }
1209 }
1210#endif
cea2e8a9 1211 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1212#ifdef __DATE__
1213# ifdef __TIME__
cea2e8a9 1214 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1215# else
cea2e8a9 1216 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1217# endif
1218#endif
3280af22 1219 sv_catpv(PL_Sv, "; \
6224f72b 1220$\"=\"\\n \"; \
69fcd688
JH
1221@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1222#ifdef __CYGWIN__
1223 sv_catpv(PL_Sv,"\
1224push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1225#endif
1226 sv_catpv(PL_Sv, "\
6224f72b
GS
1227print \" \\%ENV:\\n @env\\n\" if @env; \
1228print \" \\@INC:\\n @INC\\n\";");
1229 }
1230 else {
3280af22
NIS
1231 PL_Sv = newSVpv("config_vars(qw(",0);
1232 sv_catpv(PL_Sv, ++s);
1233 sv_catpv(PL_Sv, "))");
6224f72b
GS
1234 s += strlen(s);
1235 }
3280af22 1236 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1237 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1238 goto reswitch;
1239 case 'x':
3280af22 1240 PL_doextract = TRUE;
6224f72b
GS
1241 s++;
1242 if (*s)
f4c556ac 1243 cddir = s;
6224f72b
GS
1244 break;
1245 case 0:
1246 break;
1247 case '-':
1248 if (!*++s || isSPACE(*s)) {
1249 argc--,argv++;
1250 goto switch_end;
1251 }
1252 /* catch use of gnu style long options */
1253 if (strEQ(s, "version")) {
1254 s = "v";
1255 goto reswitch;
1256 }
1257 if (strEQ(s, "help")) {
1258 s = "h";
1259 goto reswitch;
1260 }
1261 s--;
1262 /* FALL THROUGH */
1263 default:
cea2e8a9 1264 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1265 }
1266 }
6224f72b 1267 switch_end:
54310121 1268
f675dbe5
CB
1269 if (
1270#ifndef SECURE_INTERNAL_GETENV
1271 !PL_tainting &&
1272#endif
659ca9ea 1273 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1274 {
659ca9ea 1275 s = savepv(popts);
74288ac8
GS
1276 while (isSPACE(*s))
1277 s++;
1278 if (*s == '-' && *(s+1) == 'T')
1279 PL_tainting = TRUE;
1280 else {
1281 while (s && *s) {
4ea8f8fb 1282 char *d;
74288ac8
GS
1283 while (isSPACE(*s))
1284 s++;
1285 if (*s == '-') {
1286 s++;
1287 if (isSPACE(*s))
1288 continue;
1289 }
4ea8f8fb 1290 d = s;
74288ac8
GS
1291 if (!*s)
1292 break;
1293 if (!strchr("DIMUdmw", *s))
cea2e8a9 1294 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1295 while (++s && *s) {
1296 if (isSPACE(*s)) {
1297 *s++ = '\0';
1298 break;
1299 }
1300 }
1301 moreswitches(d);
6224f72b 1302 }
6224f72b
GS
1303 }
1304 }
a0d0e21e 1305
6224f72b
GS
1306 if (!scriptname)
1307 scriptname = argv[0];
3280af22 1308 if (PL_e_script) {
6224f72b
GS
1309 argc++,argv--;
1310 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1311 }
1312 else if (scriptname == Nullch) {
1313#ifdef MSDOS
1314 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1315 moreswitches("h");
1316#endif
1317 scriptname = "-";
1318 }
1319
1320 init_perllib();
1321
1322 open_script(scriptname,dosearch,sv,&fdscript);
1323
1324 validate_suid(validarg, scriptname,fdscript);
1325
64ca3a65 1326#ifndef PERL_MICRO
0b5b802d
GS
1327#if defined(SIGCHLD) || defined(SIGCLD)
1328 {
1329#ifndef SIGCHLD
1330# define SIGCHLD SIGCLD
1331#endif
1332 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1333 if (sigstate == SIG_IGN) {
1334 if (ckWARN(WARN_SIGNAL))
1335 Perl_warner(aTHX_ WARN_SIGNAL,
1336 "Can't ignore signal CHLD, forcing to default");
1337 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1338 }
1339 }
1340#endif
64ca3a65 1341#endif
0b5b802d 1342
bf4acbe4
GS
1343#ifdef MACOS_TRADITIONAL
1344 if (PL_doextract || gMacPerl_AlwaysExtract) {
1345#else
f4c556ac 1346 if (PL_doextract) {
bf4acbe4 1347#endif
6224f72b 1348 find_beginning();
f4c556ac
GS
1349 if (cddir && PerlDir_chdir(cddir) < 0)
1350 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1351
1352 }
6224f72b 1353
3280af22
NIS
1354 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1355 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1356 CvUNIQUE_on(PL_compcv);
1357
1358 PL_comppad = newAV();
1359 av_push(PL_comppad, Nullsv);
1360 PL_curpad = AvARRAY(PL_comppad);
1361 PL_comppad_name = newAV();
1362 PL_comppad_name_fill = 0;
1363 PL_min_intro_pending = 0;
1364 PL_padix = 0;
6224f72b 1365#ifdef USE_THREADS
79cb57f6 1366 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1367 PL_curpad[0] = (SV*)newAV();
1368 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1369 CvOWNER(PL_compcv) = 0;
1370 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1371 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS
1372#endif /* USE_THREADS */
1373
1374 comppadlist = newAV();
1375 AvREAL_off(comppadlist);
3280af22
NIS
1376 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1377 av_store(comppadlist, 1, (SV*)PL_comppad);
1378 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1379
0c4f7ff0 1380 boot_core_PerlIO();
6224f72b 1381 boot_core_UNIVERSAL();
9a34ef1d 1382#ifndef PERL_MICRO
09bef843 1383 boot_core_xsutils();
9a34ef1d 1384#endif
6224f72b
GS
1385
1386 if (xsinit)
0cb96387 1387 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1388#ifndef PERL_MICRO
ed79a026 1389#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1390 init_os_extras();
6224f72b 1391#endif
64ca3a65 1392#endif
6224f72b 1393
29209bc5 1394#ifdef USE_SOCKS
1b9c9cf5
DH
1395# ifdef HAS_SOCKS5_INIT
1396 socks5_init(argv[0]);
1397# else
29209bc5 1398 SOCKSinit(argv[0]);
1b9c9cf5 1399# endif
ac27b0f5 1400#endif
29209bc5 1401
6224f72b
GS
1402 init_predump_symbols();
1403 /* init_postdump_symbols not currently designed to be called */
1404 /* more than once (ENV isn't cleared first, for example) */
1405 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1406 if (!PL_do_undump)
6224f72b
GS
1407 init_postdump_symbols(argc,argv,env);
1408
1409 init_lexer();
1410
1411 /* now parse the script */
1412
1413 SETERRNO(0,SS$_NORMAL);
3280af22 1414 PL_error_count = 0;
bf4acbe4
GS
1415#ifdef MACOS_TRADITIONAL
1416 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1417 if (PL_minus_c)
1418 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1419 else {
1420 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1421 MacPerl_MPWFileName(PL_origfilename));
1422 }
1423 }
1424#else
3280af22
NIS
1425 if (yyparse() || PL_error_count) {
1426 if (PL_minus_c)
cea2e8a9 1427 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1428 else {
cea2e8a9 1429 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1430 PL_origfilename);
6224f72b
GS
1431 }
1432 }
bf4acbe4 1433#endif
57843af0 1434 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1435 PL_curstash = PL_defstash;
1436 PL_preprocess = FALSE;
1437 if (PL_e_script) {
1438 SvREFCNT_dec(PL_e_script);
1439 PL_e_script = Nullsv;
6224f72b
GS
1440 }
1441
1442 /* now that script is parsed, we can modify record separator */
3280af22
NIS
1443 SvREFCNT_dec(PL_rs);
1444 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1445 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1446 if (PL_do_undump)
6224f72b
GS
1447 my_unexec();
1448
57843af0
GS
1449 if (isWARN_ONCE) {
1450 SAVECOPFILE(PL_curcop);
1451 SAVECOPLINE(PL_curcop);
3280af22 1452 gv_check(PL_defstash);
57843af0 1453 }
6224f72b
GS
1454
1455 LEAVE;
1456 FREETMPS;
1457
1458#ifdef MYMALLOC
1459 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1460 dump_mstats("after compilation:");
1461#endif
1462
1463 ENTER;
3280af22 1464 PL_restartop = 0;
312caa8e 1465 return NULL;
6224f72b
GS
1466}
1467
954c1994
GS
1468/*
1469=for apidoc perl_run
1470
1471Tells a Perl interpreter to run. See L<perlembed>.
1472
1473=cut
1474*/
1475
6224f72b 1476int
0cb96387 1477perl_run(pTHXx)
6224f72b 1478{
6224f72b 1479 I32 oldscope;
14dd3ad8 1480 int ret = 0;
db36c5a1 1481 dJMPENV;
cea2e8a9
GS
1482#ifdef USE_THREADS
1483 dTHX;
1484#endif
6224f72b 1485
3280af22 1486 oldscope = PL_scopestack_ix;
6224f72b 1487
14dd3ad8 1488#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1489 redo_body:
14dd3ad8
GS
1490 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1491#else
1492 JMPENV_PUSH(ret);
1493#endif
6224f72b
GS
1494 switch (ret) {
1495 case 1:
1496 cxstack_ix = -1; /* start context stack again */
312caa8e 1497 goto redo_body;
14dd3ad8
GS
1498 case 0: /* normal completion */
1499#ifndef PERL_FLEXIBLE_EXCEPTIONS
1500 redo_body:
1501 run_body(oldscope);
1502#endif
1503 /* FALL THROUGH */
1504 case 2: /* my_exit() */
3280af22 1505 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1506 LEAVE;
1507 FREETMPS;
3280af22 1508 PL_curstash = PL_defstash;
6224f72b
GS
1509#ifdef MYMALLOC
1510 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1511 dump_mstats("after execution: ");
1512#endif
14dd3ad8
GS
1513 ret = STATUS_NATIVE_EXPORT;
1514 break;
6224f72b 1515 case 3:
312caa8e
CS
1516 if (PL_restartop) {
1517 POPSTACK_TO(PL_mainstack);
1518 goto redo_body;
6224f72b 1519 }
bf49b057 1520 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1521 FREETMPS;
14dd3ad8
GS
1522 ret = 1;
1523 break;
6224f72b
GS
1524 }
1525
14dd3ad8
GS
1526 JMPENV_POP;
1527 return ret;
312caa8e
CS
1528}
1529
14dd3ad8 1530#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1531STATIC void *
14dd3ad8 1532S_vrun_body(pTHX_ va_list args)
312caa8e 1533{
312caa8e
CS
1534 I32 oldscope = va_arg(args, I32);
1535
14dd3ad8
GS
1536 return run_body(oldscope);
1537}
1538#endif
1539
1540
1541STATIC void *
1542S_run_body(pTHX_ I32 oldscope)
1543{
6224f72b 1544 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1545 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1546
3280af22 1547 if (!PL_restartop) {
6224f72b
GS
1548 DEBUG_x(dump_all());
1549 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1550 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1551 PTR2UV(thr)));
6224f72b 1552
3280af22 1553 if (PL_minus_c) {
bf4acbe4
GS
1554#ifdef MACOS_TRADITIONAL
1555 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1556#else
bf49b057 1557 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1558#endif
6224f72b
GS
1559 my_exit(0);
1560 }
3280af22 1561 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1562 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1563 if (PL_initav)
1564 call_list(oldscope, PL_initav);
6224f72b
GS
1565 }
1566
1567 /* do it */
1568
3280af22 1569 if (PL_restartop) {
533c011a 1570 PL_op = PL_restartop;
3280af22 1571 PL_restartop = 0;
cea2e8a9 1572 CALLRUNOPS(aTHX);
6224f72b 1573 }
3280af22
NIS
1574 else if (PL_main_start) {
1575 CvDEPTH(PL_main_cv) = 1;
533c011a 1576 PL_op = PL_main_start;
cea2e8a9 1577 CALLRUNOPS(aTHX);
6224f72b
GS
1578 }
1579
f6b3007c
JH
1580 my_exit(0);
1581 /* NOTREACHED */
312caa8e 1582 return NULL;
6224f72b
GS
1583}
1584
954c1994
GS
1585/*
1586=for apidoc p||get_sv
1587
1588Returns the SV of the specified Perl scalar. If C<create> is set and the
1589Perl variable does not exist then it will be created. If C<create> is not
1590set and the variable does not exist then NULL is returned.
1591
1592=cut
1593*/
1594
6224f72b 1595SV*
864dbfa3 1596Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1597{
1598 GV *gv;
1599#ifdef USE_THREADS
1600 if (name[1] == '\0' && !isALPHA(name[0])) {
1601 PADOFFSET tmp = find_threadsv(name);
411caa50 1602 if (tmp != NOT_IN_PAD)
6224f72b 1603 return THREADSV(tmp);
6224f72b
GS
1604 }
1605#endif /* USE_THREADS */
1606 gv = gv_fetchpv(name, create, SVt_PV);
1607 if (gv)
1608 return GvSV(gv);
1609 return Nullsv;
1610}
1611
954c1994
GS
1612/*
1613=for apidoc p||get_av
1614
1615Returns the AV of the specified Perl array. If C<create> is set and the
1616Perl variable does not exist then it will be created. If C<create> is not
1617set and the variable does not exist then NULL is returned.
1618
1619=cut
1620*/
1621
6224f72b 1622AV*
864dbfa3 1623Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1624{
1625 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1626 if (create)
1627 return GvAVn(gv);
1628 if (gv)
1629 return GvAV(gv);
1630 return Nullav;
1631}
1632
954c1994
GS
1633/*
1634=for apidoc p||get_hv
1635
1636Returns the HV of the specified Perl hash. If C<create> is set and the
1637Perl variable does not exist then it will be created. If C<create> is not
1638set and the variable does not exist then NULL is returned.
1639
1640=cut
1641*/
1642
6224f72b 1643HV*
864dbfa3 1644Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1645{
a0d0e21e
LW
1646 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1647 if (create)
1648 return GvHVn(gv);
1649 if (gv)
1650 return GvHV(gv);
1651 return Nullhv;
1652}
1653
954c1994
GS
1654/*
1655=for apidoc p||get_cv
1656
1657Returns the CV of the specified Perl subroutine. If C<create> is set and
1658the Perl subroutine does not exist then it will be declared (which has the
1659same effect as saying C<sub name;>). If C<create> is not set and the
1660subroutine does not exist then NULL is returned.
1661
1662=cut
1663*/
1664
a0d0e21e 1665CV*
864dbfa3 1666Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1667{
1668 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1669 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1670 /* XXX this is probably not what they think they're getting.
1671 * It has the same effect as "sub name;", i.e. just a forward
1672 * declaration! */
8ebc5c01 1673 if (create && !GvCVu(gv))
774d564b 1674 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1675 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1676 Nullop,
a0d0e21e
LW
1677 Nullop);
1678 if (gv)
8ebc5c01 1679 return GvCVu(gv);
a0d0e21e
LW
1680 return Nullcv;
1681}
1682
79072805
LW
1683/* Be sure to refetch the stack pointer after calling these routines. */
1684
954c1994
GS
1685/*
1686=for apidoc p||call_argv
1687
1688Performs a callback to the specified Perl sub. See L<perlcall>.
1689
1690=cut
1691*/
1692
a0d0e21e 1693I32
864dbfa3 1694Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1695
8ac85365
NIS
1696 /* See G_* flags in cop.h */
1697 /* null terminated arg list */
8990e307 1698{
a0d0e21e 1699 dSP;
8990e307 1700
924508f0 1701 PUSHMARK(SP);
a0d0e21e 1702 if (argv) {
8990e307 1703 while (*argv) {
a0d0e21e 1704 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1705 argv++;
1706 }
a0d0e21e 1707 PUTBACK;
8990e307 1708 }
864dbfa3 1709 return call_pv(sub_name, flags);
8990e307
LW
1710}
1711
954c1994
GS
1712/*
1713=for apidoc p||call_pv
1714
1715Performs a callback to the specified Perl sub. See L<perlcall>.
1716
1717=cut
1718*/
1719
a0d0e21e 1720I32
864dbfa3 1721Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1722 /* name of the subroutine */
1723 /* See G_* flags in cop.h */
a0d0e21e 1724{
864dbfa3 1725 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1726}
1727
954c1994
GS
1728/*
1729=for apidoc p||call_method
1730
1731Performs a callback to the specified Perl method. The blessed object must
1732be on the stack. See L<perlcall>.
1733
1734=cut
1735*/
1736
a0d0e21e 1737I32
864dbfa3 1738Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1739 /* name of the subroutine */
1740 /* See G_* flags in cop.h */
a0d0e21e 1741{
968b3946 1742 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1743}
1744
1745/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1746/*
1747=for apidoc p||call_sv
1748
1749Performs a callback to the Perl sub whose name is in the SV. See
1750L<perlcall>.
1751
1752=cut
1753*/
1754
a0d0e21e 1755I32
864dbfa3 1756Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1757 /* See G_* flags in cop.h */
a0d0e21e 1758{
924508f0 1759 dSP;
a0d0e21e 1760 LOGOP myop; /* fake syntax tree node */
968b3946 1761 UNOP method_op;
aa689395 1762 I32 oldmark;
13689cfe 1763 volatile I32 retval = 0;
a0d0e21e 1764 I32 oldscope;
54310121 1765 bool oldcatch = CATCH_GET;
6224f72b 1766 int ret;
533c011a 1767 OP* oldop = PL_op;
db36c5a1 1768 dJMPENV;
1e422769 1769
a0d0e21e
LW
1770 if (flags & G_DISCARD) {
1771 ENTER;
1772 SAVETMPS;
1773 }
1774
aa689395 1775 Zero(&myop, 1, LOGOP);
54310121 1776 myop.op_next = Nullop;
f51d4af5 1777 if (!(flags & G_NOARGS))
aa689395 1778 myop.op_flags |= OPf_STACKED;
54310121
PP
1779 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1780 (flags & G_ARRAY) ? OPf_WANT_LIST :
1781 OPf_WANT_SCALAR);
462e5cf6 1782 SAVEOP();
533c011a 1783 PL_op = (OP*)&myop;
aa689395 1784
3280af22
NIS
1785 EXTEND(PL_stack_sp, 1);
1786 *++PL_stack_sp = sv;
aa689395 1787 oldmark = TOPMARK;
3280af22 1788 oldscope = PL_scopestack_ix;
a0d0e21e 1789
3280af22 1790 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1791 /* Handle first BEGIN of -d. */
3280af22 1792 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1793 /* Try harder, since this may have been a sighandler, thus
1794 * curstash may be meaningless. */
3280af22 1795 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1796 && !(flags & G_NODEBUG))
533c011a 1797 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1798
968b3946
GS
1799 if (flags & G_METHOD) {
1800 Zero(&method_op, 1, UNOP);
1801 method_op.op_next = PL_op;
1802 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1803 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1804 PL_op = (OP*)&method_op;
968b3946
GS
1805 }
1806
312caa8e 1807 if (!(flags & G_EVAL)) {
0cdb2077 1808 CATCH_SET(TRUE);
14dd3ad8 1809 call_body((OP*)&myop, FALSE);
312caa8e 1810 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1811 CATCH_SET(oldcatch);
312caa8e
CS
1812 }
1813 else {
d78bda3d 1814 myop.op_other = (OP*)&myop;
3280af22 1815 PL_markstack_ptr--;
4633a7c4
LW
1816 /* we're trying to emulate pp_entertry() here */
1817 {
c09156bb 1818 register PERL_CONTEXT *cx;
54310121 1819 I32 gimme = GIMME_V;
ac27b0f5 1820
4633a7c4
LW
1821 ENTER;
1822 SAVETMPS;
ac27b0f5 1823
968b3946 1824 push_return(Nullop);
1d76a5c3 1825 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1826 PUSHEVAL(cx, 0, 0);
533c011a 1827 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1828
faef0170 1829 PL_in_eval = EVAL_INEVAL;
4633a7c4 1830 if (flags & G_KEEPERR)
faef0170 1831 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1832 else
38a03e6e 1833 sv_setpv(ERRSV,"");
4633a7c4 1834 }
3280af22 1835 PL_markstack_ptr++;
a0d0e21e 1836
14dd3ad8
GS
1837#ifdef PERL_FLEXIBLE_EXCEPTIONS
1838 redo_body:
1839 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1840 (OP*)&myop, FALSE);
14dd3ad8
GS
1841#else
1842 JMPENV_PUSH(ret);
1843#endif
6224f72b
GS
1844 switch (ret) {
1845 case 0:
14dd3ad8
GS
1846#ifndef PERL_FLEXIBLE_EXCEPTIONS
1847 redo_body:
1848 call_body((OP*)&myop, FALSE);
1849#endif
312caa8e
CS
1850 retval = PL_stack_sp - (PL_stack_base + oldmark);
1851 if (!(flags & G_KEEPERR))
1852 sv_setpv(ERRSV,"");
a0d0e21e 1853 break;
6224f72b 1854 case 1:
f86702cc 1855 STATUS_ALL_FAILURE;
a0d0e21e 1856 /* FALL THROUGH */
6224f72b 1857 case 2:
a0d0e21e 1858 /* my_exit() was called */
3280af22 1859 PL_curstash = PL_defstash;
a0d0e21e 1860 FREETMPS;
14dd3ad8 1861 JMPENV_POP;
cc3604b1 1862 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1863 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1864 my_exit_jump();
a0d0e21e 1865 /* NOTREACHED */
6224f72b 1866 case 3:
3280af22 1867 if (PL_restartop) {
533c011a 1868 PL_op = PL_restartop;
3280af22 1869 PL_restartop = 0;
312caa8e 1870 goto redo_body;
a0d0e21e 1871 }
3280af22 1872 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1873 if (flags & G_ARRAY)
1874 retval = 0;
1875 else {
1876 retval = 1;
3280af22 1877 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1878 }
312caa8e 1879 break;
a0d0e21e 1880 }
a0d0e21e 1881
3280af22 1882 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1883 SV **newsp;
1884 PMOP *newpm;
1885 I32 gimme;
c09156bb 1886 register PERL_CONTEXT *cx;
a0a2876f
LW
1887 I32 optype;
1888
1889 POPBLOCK(cx,newpm);
1890 POPEVAL(cx);
1891 pop_return();
3280af22 1892 PL_curpm = newpm;
a0a2876f 1893 LEAVE;
a0d0e21e 1894 }
14dd3ad8 1895 JMPENV_POP;
a0d0e21e 1896 }
1e422769 1897
a0d0e21e 1898 if (flags & G_DISCARD) {
3280af22 1899 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1900 retval = 0;
1901 FREETMPS;
1902 LEAVE;
1903 }
533c011a 1904 PL_op = oldop;
a0d0e21e
LW
1905 return retval;
1906}
1907
14dd3ad8 1908#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1909STATIC void *
14dd3ad8 1910S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1911{
1912 OP *myop = va_arg(args, OP*);
1913 int is_eval = va_arg(args, int);
1914
14dd3ad8 1915 call_body(myop, is_eval);
312caa8e
CS
1916 return NULL;
1917}
14dd3ad8 1918#endif
312caa8e
CS
1919
1920STATIC void
14dd3ad8 1921S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1922{
312caa8e
CS
1923 if (PL_op == myop) {
1924 if (is_eval)
f807eda9 1925 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1926 else
f807eda9 1927 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1928 }
1929 if (PL_op)
cea2e8a9 1930 CALLRUNOPS(aTHX);
312caa8e
CS
1931}
1932
6e72f9df 1933/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1934
954c1994
GS
1935/*
1936=for apidoc p||eval_sv
1937
1938Tells Perl to C<eval> the string in the SV.
1939
1940=cut
1941*/
1942
a0d0e21e 1943I32
864dbfa3 1944Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1945
8ac85365 1946 /* See G_* flags in cop.h */
a0d0e21e 1947{
924508f0 1948 dSP;
a0d0e21e 1949 UNOP myop; /* fake syntax tree node */
8fa7f367 1950 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1951 volatile I32 retval = 0;
4633a7c4 1952 I32 oldscope;
6224f72b 1953 int ret;
533c011a 1954 OP* oldop = PL_op;
db36c5a1 1955 dJMPENV;
84902520 1956
4633a7c4
LW
1957 if (flags & G_DISCARD) {
1958 ENTER;
1959 SAVETMPS;
1960 }
1961
462e5cf6 1962 SAVEOP();
533c011a
NIS
1963 PL_op = (OP*)&myop;
1964 Zero(PL_op, 1, UNOP);
3280af22
NIS
1965 EXTEND(PL_stack_sp, 1);
1966 *++PL_stack_sp = sv;
1967 oldscope = PL_scopestack_ix;
79072805 1968
4633a7c4
LW
1969 if (!(flags & G_NOARGS))
1970 myop.op_flags = OPf_STACKED;
79072805 1971 myop.op_next = Nullop;
6e72f9df 1972 myop.op_type = OP_ENTEREVAL;
54310121
PP
1973 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1974 (flags & G_ARRAY) ? OPf_WANT_LIST :
1975 OPf_WANT_SCALAR);
6e72f9df
PP
1976 if (flags & G_KEEPERR)
1977 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1978
14dd3ad8 1979#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1980 redo_body:
14dd3ad8 1981 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1982 (OP*)&myop, TRUE);
14dd3ad8
GS
1983#else
1984 JMPENV_PUSH(ret);
1985#endif
6224f72b
GS
1986 switch (ret) {
1987 case 0:
14dd3ad8
GS
1988#ifndef PERL_FLEXIBLE_EXCEPTIONS
1989 redo_body:
1990 call_body((OP*)&myop,TRUE);
1991#endif
312caa8e
CS
1992 retval = PL_stack_sp - (PL_stack_base + oldmark);
1993 if (!(flags & G_KEEPERR))
1994 sv_setpv(ERRSV,"");
4633a7c4 1995 break;
6224f72b 1996 case 1:
f86702cc 1997 STATUS_ALL_FAILURE;
4633a7c4 1998 /* FALL THROUGH */
6224f72b 1999 case 2:
4633a7c4 2000 /* my_exit() was called */
3280af22 2001 PL_curstash = PL_defstash;
4633a7c4 2002 FREETMPS;
14dd3ad8 2003 JMPENV_POP;
cc3604b1 2004 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2005 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2006 my_exit_jump();
4633a7c4 2007 /* NOTREACHED */
6224f72b 2008 case 3:
3280af22 2009 if (PL_restartop) {
533c011a 2010 PL_op = PL_restartop;
3280af22 2011 PL_restartop = 0;
312caa8e 2012 goto redo_body;
4633a7c4 2013 }
3280af22 2014 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2015 if (flags & G_ARRAY)
2016 retval = 0;
2017 else {
2018 retval = 1;
3280af22 2019 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2020 }
312caa8e 2021 break;
4633a7c4
LW
2022 }
2023
14dd3ad8 2024 JMPENV_POP;
4633a7c4 2025 if (flags & G_DISCARD) {
3280af22 2026 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2027 retval = 0;
2028 FREETMPS;
2029 LEAVE;
2030 }
533c011a 2031 PL_op = oldop;
4633a7c4
LW
2032 return retval;
2033}
2034
954c1994
GS
2035/*
2036=for apidoc p||eval_pv
2037
2038Tells Perl to C<eval> the given string and return an SV* result.
2039
2040=cut
2041*/
2042
137443ea 2043SV*
864dbfa3 2044Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2045{
2046 dSP;
2047 SV* sv = newSVpv(p, 0);
2048
864dbfa3 2049 eval_sv(sv, G_SCALAR);
137443ea
PP
2050 SvREFCNT_dec(sv);
2051
2052 SPAGAIN;
2053 sv = POPs;
2054 PUTBACK;
2055
2d8e6c8d
GS
2056 if (croak_on_error && SvTRUE(ERRSV)) {
2057 STRLEN n_a;
cea2e8a9 2058 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2059 }
137443ea
PP
2060
2061 return sv;
2062}
2063
4633a7c4
LW
2064/* Require a module. */
2065
954c1994
GS
2066/*
2067=for apidoc p||require_pv
2068
7d3fb230
BS
2069Tells Perl to C<require> the file named by the string argument. It is
2070analogous to the Perl code C<eval "require '$file'">. It's even
2071implemented that way; consider using Perl_load_module instead.
954c1994 2072
7d3fb230 2073=cut */
954c1994 2074
4633a7c4 2075void
864dbfa3 2076Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2077{
d3acc0f7
JP
2078 SV* sv;
2079 dSP;
e788e7d3 2080 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2081 PUTBACK;
2082 sv = sv_newmortal();
4633a7c4
LW
2083 sv_setpv(sv, "require '");
2084 sv_catpv(sv, pv);
2085 sv_catpv(sv, "'");
864dbfa3 2086 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2087 SPAGAIN;
2088 POPSTACK;
79072805
LW
2089}
2090
79072805 2091void
864dbfa3 2092Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2093{
2094 register GV *gv;
2095
155aba94 2096 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2097 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2098}
2099
76e3520e 2100STATIC void
cea2e8a9 2101S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2102{
ab821d7f 2103 /* This message really ought to be max 23 lines.
75c72d73 2104 * Removed -h because the user already knows that option. Others? */
fb73857a 2105
76e3520e 2106 static char *usage_msg[] = {
fb73857a
PP
2107"-0[octal] specify record separator (\\0, if no argument)",
2108"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2109"-C enable native wide character system interfaces",
1950ee41 2110"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2111"-d[:debugger] run program under debugger",
2112"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2113"-e 'command' one line of program (several -e's allowed, omit programfile)",
2114"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2115"-i[extension] edit <> files in place (makes backup if extension supplied)",
2116"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2117"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2118"-[mM][-]module execute `use/no module...' before executing program",
2119"-n assume 'while (<>) { ... }' loop around program",
2120"-p assume loop like -n but print line also, like sed",
2121"-P run program through C preprocessor before compilation",
2122"-s enable rudimentary parsing for switches after programfile",
2123"-S look for programfile using PATH environment variable",
2124"-T enable tainting checks",
2125"-u dump core after parsing program",
fb73857a 2126"-U allow unsafe operations",
aac3bd0d
GS
2127"-v print version, subversion (includes VERY IMPORTANT perl info)",
2128"-V[:variable] print configuration summary (or a single Config.pm variable)",
2129"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2130"-W enable all warnings",
2131"-X disable all warnings",
fb73857a
PP
2132"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2133"\n",
2134NULL
2135};
76e3520e 2136 char **p = usage_msg;
fb73857a 2137
b0e47665
GS
2138 PerlIO_printf(PerlIO_stdout(),
2139 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2140 name);
fb73857a 2141 while (*p)
b0e47665 2142 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2143}
2144
79072805
LW
2145/* This routine handles any switches that can be given during run */
2146
2147char *
864dbfa3 2148Perl_moreswitches(pTHX_ char *s)
79072805 2149{
ba210ebe 2150 STRLEN numlen;
c07a80fd 2151 U32 rschar;
79072805
LW
2152
2153 switch (*s) {
2154 case '0':
a863c7d1 2155 {
b21ed0a9 2156 numlen = 0; /* disallow underscores */
dff6d3cd 2157 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2158 SvREFCNT_dec(PL_nrs);
c07a80fd 2159 if (rschar & ~((U8)~0))
3280af22 2160 PL_nrs = &PL_sv_undef;
c07a80fd 2161 else if (!rschar && numlen >= 2)
79cb57f6 2162 PL_nrs = newSVpvn("", 0);
c07a80fd
PP
2163 else {
2164 char ch = rschar;
79cb57f6 2165 PL_nrs = newSVpvn(&ch, 1);
79072805
LW
2166 }
2167 return s + numlen;
a863c7d1 2168 }
46487f74
GS
2169 case 'C':
2170 PL_widesyscalls = TRUE;
2171 s++;
2172 return s;
2304df62 2173 case 'F':
3280af22
NIS
2174 PL_minus_F = TRUE;
2175 PL_splitstr = savepv(s + 1);
2304df62
AD
2176 s += strlen(s);
2177 return s;
79072805 2178 case 'a':
3280af22 2179 PL_minus_a = TRUE;
79072805
LW
2180 s++;
2181 return s;
2182 case 'c':
3280af22 2183 PL_minus_c = TRUE;
79072805
LW
2184 s++;
2185 return s;
2186 case 'd':
bbce6d69 2187 forbid_setid("-d");
4633a7c4 2188 s++;
70c94a19
RR
2189 /* The following permits -d:Mod to accepts arguments following an =
2190 in the fashion that -MSome::Mod does. */
2191 if (*s == ':' || *s == '=') {
2192 char *start;
2193 SV *sv;
2194 sv = newSVpv("use Devel::", 0);
2195 start = ++s;
2196 /* We now allow -d:Module=Foo,Bar */
2197 while(isALNUM(*s) || *s==':') ++s;
2198 if (*s != '=')
2199 sv_catpv(sv, start);
2200 else {
2201 sv_catpvn(sv, start, s-start);
2202 sv_catpv(sv, " split(/,/,q{");
2203 sv_catpv(sv, ++s);
2204 sv_catpv(sv, "})");
2205 }
4633a7c4 2206 s += strlen(s);
70c94a19 2207 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2208 }
ed094faf 2209 if (!PL_perldb) {
3280af22 2210 PL_perldb = PERLDB_ALL;
a0d0e21e 2211 init_debugger();
ed094faf 2212 }
79072805
LW
2213 return s;
2214 case 'D':
0453d815 2215 {
79072805 2216#ifdef DEBUGGING
bbce6d69 2217 forbid_setid("-D");
79072805 2218 if (isALPHA(s[1])) {
04932ac8
DM
2219 /* if adding extra options, remember to update DEBUG_MASK */
2220 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW
2221 char *d;
2222
93a17b20 2223 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2224 PL_debug |= 1 << (d - debopts);
79072805
LW
2225 }
2226 else {
3280af22 2227 PL_debug = atoi(s+1);
79072805
LW
2228 for (s++; isDIGIT(*s); s++) ;
2229 }
aea4f609 2230 PL_debug |= DEBUG_TOP_FLAG;
79072805 2231#else
0453d815
PM
2232 if (ckWARN_d(WARN_DEBUGGING))
2233 Perl_warner(aTHX_ WARN_DEBUGGING,
2234 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2235 for (s++; isALNUM(*s); s++) ;
79072805
LW
2236#endif
2237 /*SUPPRESS 530*/
2238 return s;
0453d815 2239 }
4633a7c4 2240 case 'h':
ac27b0f5 2241 usage(PL_origargv[0]);
6ad3d225 2242 PerlProc_exit(0);
79072805 2243 case 'i':
3280af22
NIS
2244 if (PL_inplace)
2245 Safefree(PL_inplace);
2246 PL_inplace = savepv(s+1);
79072805 2247 /*SUPPRESS 530*/
3280af22 2248 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2249 if (*s) {
fb73857a 2250 *s++ = '\0';
7b8d334a
GS
2251 if (*s == '-') /* Additional switches on #! line. */
2252 s++;
2253 }
fb73857a
PP
2254 return s;
2255 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2256 forbid_setid("-I");
fb73857a
PP
2257 ++s;
2258 while (*s && isSPACE(*s))
2259 ++s;
2260 if (*s) {
774d564b 2261 char *e, *p;
0df16ed7
GS
2262 p = s;
2263 /* ignore trailing spaces (possibly followed by other switches) */
2264 do {
2265 for (e = p; *e && !isSPACE(*e); e++) ;
2266 p = e;
2267 while (isSPACE(*p))
2268 p++;
2269 } while (*p && *p != '-');
2270 e = savepvn(s, e-s);
9c8a64f0 2271 incpush(e, TRUE, TRUE);
0df16ed7
GS
2272 Safefree(e);
2273 s = p;
2274 if (*s == '-')
2275 s++;
79072805
LW
2276 }
2277 else
a67e862a 2278 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2279 return s;
79072805 2280 case 'l':
3280af22 2281 PL_minus_l = TRUE;
79072805 2282 s++;
7889fe52
NIS
2283 if (PL_ors_sv) {
2284 SvREFCNT_dec(PL_ors_sv);
2285 PL_ors_sv = Nullsv;
2286 }
79072805 2287 if (isDIGIT(*s)) {
7889fe52 2288 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2289 numlen = 0; /* disallow underscores */
7889fe52 2290 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW
2291 s += numlen;
2292 }
2293 else {
3280af22 2294 if (RsPARA(PL_nrs)) {
7889fe52
NIS
2295 PL_ors_sv = newSVpvn("\n\n",2);
2296 }
2297 else {
2298 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2299 }
79072805
LW
2300 }
2301 return s;
1a30305b 2302 case 'M':
bbce6d69 2303 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2304 /* FALL THROUGH */
2305 case 'm':
bbce6d69 2306 forbid_setid("-m"); /* XXX ? */
1a30305b 2307 if (*++s) {
a5f75d66 2308 char *start;
11343788 2309 SV *sv;
a5f75d66
AD
2310 char *use = "use ";
2311 /* -M-foo == 'no foo' */
2312 if (*s == '-') { use = "no "; ++s; }
11343788 2313 sv = newSVpv(use,0);
a5f75d66 2314 start = s;
1a30305b 2315 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2316 while(isALNUM(*s) || *s==':') ++s;
2317 if (*s != '=') {
11343788 2318 sv_catpv(sv, start);
c07a80fd
PP
2319 if (*(start-1) == 'm') {
2320 if (*s != '\0')
cea2e8a9 2321 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2322 sv_catpv( sv, " ()");
c07a80fd
PP
2323 }
2324 } else {
6df41af2 2325 if (s == start)
be98fb35
GS
2326 Perl_croak(aTHX_ "Module name required with -%c option",
2327 s[-1]);
11343788
MB
2328 sv_catpvn(sv, start, s-start);
2329 sv_catpv(sv, " split(/,/,q{");
2330 sv_catpv(sv, ++s);
2331 sv_catpv(sv, "})");
c07a80fd 2332 }
1a30305b 2333 s += strlen(s);
5c831c24 2334 if (!PL_preambleav)
3280af22
NIS
2335 PL_preambleav = newAV();
2336 av_push(PL_preambleav, sv);
1a30305b
PP
2337 }
2338 else
cea2e8a9 2339 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2340 return s;
79072805 2341 case 'n':
3280af22 2342 PL_minus_n = TRUE;
79072805
LW
2343 s++;
2344 return s;
2345 case 'p':
3280af22 2346 PL_minus_p = TRUE;
79072805
LW
2347 s++;
2348 return s;
2349 case 's':
bbce6d69 2350 forbid_setid("-s");
3280af22 2351 PL_doswitches = TRUE;
79072805
LW
2352 s++;
2353 return s;
463ee0b2 2354 case 'T':
3280af22 2355 if (!PL_tainting)
cea2e8a9 2356 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2357 s++;
2358 return s;
79072805 2359 case 'u':
bf4acbe4
GS
2360#ifdef MACOS_TRADITIONAL
2361 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2362#endif
3280af22 2363 PL_do_undump = TRUE;
79072805
LW
2364 s++;
2365 return s;
2366 case 'U':
3280af22 2367 PL_unsafe = TRUE;
79072805
LW
2368 s++;
2369 return s;
2370 case 'v':
8e9464f1 2371#if !defined(DGUX)
b0e47665 2372 PerlIO_printf(PerlIO_stdout(),
d2560b70 2373 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2374 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2375#else /* DGUX */
2376/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2377 PerlIO_printf(PerlIO_stdout(),
2378 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2379 PerlIO_printf(PerlIO_stdout(),
2380 Perl_form(aTHX_ " built under %s at %s %s\n",
2381 OSNAME, __DATE__, __TIME__));
2382 PerlIO_printf(PerlIO_stdout(),
2383 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2384 OSVERS));
8e9464f1
JH
2385#endif /* !DGUX */
2386
fb73857a
PP
2387#if defined(LOCAL_PATCH_COUNT)
2388 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2389 PerlIO_printf(PerlIO_stdout(),
2390 "\n(with %d registered patch%s, "
2391 "see perl -V for more detail)",
2392 (int)LOCAL_PATCH_COUNT,
2393 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2394#endif
1a30305b 2395
b0e47665 2396 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2397 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH
2398#ifdef MACOS_TRADITIONAL
2399 PerlIO_printf(PerlIO_stdout(),
084592ab 2400 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2401#endif
79072805 2402#ifdef MSDOS
b0e47665
GS
2403 PerlIO_printf(PerlIO_stdout(),
2404 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2405#endif
2406#ifdef DJGPP
b0e47665
GS
2407 PerlIO_printf(PerlIO_stdout(),
2408 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2409 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2410#endif
79072805 2411#ifdef OS2
b0e47665
GS
2412 PerlIO_printf(PerlIO_stdout(),
2413 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2414 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2415#endif
79072805 2416#ifdef atarist
b0e47665
GS
2417 PerlIO_printf(PerlIO_stdout(),
2418 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2419#endif
a3f9223b 2420#ifdef __BEOS__
b0e47665
GS
2421 PerlIO_printf(PerlIO_stdout(),
2422 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2423#endif
1d84e8df 2424#ifdef MPE
b0e47665 2425 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2426 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2427#endif
9d116dd7 2428#ifdef OEMVS
b0e47665
GS
2429 PerlIO_printf(PerlIO_stdout(),
2430 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2431#endif
495c5fdc 2432#ifdef __VOS__
b0e47665
GS
2433 PerlIO_printf(PerlIO_stdout(),
2434 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2435#endif
092bebab 2436#ifdef __OPEN_VM
b0e47665
GS
2437 PerlIO_printf(PerlIO_stdout(),
2438 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2439#endif
a1a0e61e 2440#ifdef POSIX_BC
b0e47665
GS
2441 PerlIO_printf(PerlIO_stdout(),
2442 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2443#endif
61ae2fbf 2444#ifdef __MINT__
b0e47665
GS
2445 PerlIO_printf(PerlIO_stdout(),
2446 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2447#endif
f83d2536 2448#ifdef EPOC
b0e47665
GS
2449 PerlIO_printf(PerlIO_stdout(),
2450 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2451#endif
e1caacb4
JH
2452#ifdef UNDER_CE
2453 printf("WINCE port by Rainer Keuchel, 2001\n");
2454 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2455 wce_hitreturn();
2456#endif
baed7233
DL
2457#ifdef BINARY_BUILD_NOTICE
2458 BINARY_BUILD_NOTICE;
2459#endif
b0e47665
GS
2460 PerlIO_printf(PerlIO_stdout(),
2461 "\n\
79072805 2462Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2463GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2464Complete documentation for Perl, including FAQ lists, should be found on\n\
2465this system using `man perl' or `perldoc perl'. If you have access to the\n\
2466Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2467 PerlProc_exit(0);
79072805 2468 case 'w':
599cee73 2469 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2470 PL_dowarn |= G_WARN_ON;
599cee73
PM
2471 s++;
2472 return s;
2473 case 'W':
ac27b0f5 2474 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2475 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2476 s++;
2477 return s;
2478 case 'X':
ac27b0f5 2479 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2480 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2481 s++;
2482 return s;
a0d0e21e 2483 case '*':
79072805
LW
2484 case ' ':
2485 if (s[1] == '-') /* Additional switches on #! line. */
2486 return s+2;
2487 break;
a0d0e21e 2488 case '-':
79072805 2489 case 0:
51882d45 2490#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2491 case '\r':
2492#endif
79072805
LW
2493 case '\n':
2494 case '\t':
2495 break;
aa689395
PP
2496#ifdef ALTERNATE_SHEBANG
2497 case 'S': /* OS/2 needs -S on "extproc" line. */
2498 break;
2499#endif
a0d0e21e 2500 case 'P':
3280af22 2501 if (PL_preprocess)
a0d0e21e
LW
2502 return s+1;
2503 /* FALL THROUGH */
79072805 2504 default:
cea2e8a9 2505 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2506 }
2507 return Nullch;
2508}
2509
2510/* compliments of Tom Christiansen */
2511
2512/* unexec() can be found in the Gnu emacs distribution */
ee580363 2513/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2514
2515void
864dbfa3 2516Perl_my_unexec(pTHX)
79072805
LW
2517{
2518#ifdef UNEXEC
46fc3d4c
PP
2519 SV* prog;
2520 SV* file;
ee580363 2521 int status = 1;
79072805
LW
2522 extern int etext;
2523
ee580363 2524 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2525 sv_catpv(prog, "/perl");
6b88bc9c 2526 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2527 sv_catpv(file, ".perldump");
79072805 2528
ee580363
GS
2529 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2530 /* unexec prints msg to stderr in case of failure */
6ad3d225 2531 PerlProc_exit(status);
79072805 2532#else
a5f75d66
AD
2533# ifdef VMS
2534# include <lib$routines.h>
2535 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2536# else
79072805 2537 ABORT(); /* for use with undump */
aa689395 2538# endif
a5f75d66 2539#endif
79072805
LW
2540}
2541
cb68f92d
GS
2542/* initialize curinterp */
2543STATIC void
cea2e8a9 2544S_init_interp(pTHX)
cb68f92d
GS
2545{
2546
066ef5b5 2547#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2548#define I_REINIT \
6b88bc9c
GS
2549 STMT_START { \
2550 PL_chopset = " \n-"; \
2551 PL_copline = NOLINE; \
2552 PL_curcop = &PL_compiling;\
2553 PL_curcopdb = NULL; \
2554 PL_dbargs = 0; \
3967c732 2555 PL_dumpindent = 4; \
6b88bc9c
GS
2556 PL_laststatval = -1; \
2557 PL_laststype = OP_STAT; \
2558 PL_maxscream = -1; \
2559 PL_maxsysfd = MAXSYSFD; \
2560 PL_statname = Nullsv; \
2561 PL_tmps_floor = -1; \
2562 PL_tmps_ix = -1; \
2563 PL_op_mask = NULL; \
6b88bc9c
GS
2564 PL_laststatval = -1; \
2565 PL_laststype = OP_STAT; \
2566 PL_mess_sv = Nullsv; \
2567 PL_splitstr = " "; \
2568 PL_generation = 100; \
2569 PL_exitlist = NULL; \
2570 PL_exitlistlen = 0; \
2571 PL_regindent = 0; \
2572 PL_in_clean_objs = FALSE; \
2573 PL_in_clean_all = FALSE; \
2574 PL_profiledata = NULL; \
2575 PL_rsfp = Nullfp; \
2576 PL_rsfp_filters = Nullav; \
24d3c518 2577 PL_dirty = FALSE; \
cb68f92d 2578 } STMT_END
9666903d 2579 I_REINIT;
066ef5b5
GS
2580#else
2581# ifdef MULTIPLICITY
2582# define PERLVAR(var,type)
51371543 2583# define PERLVARA(var,n,type)
cea2e8a9 2584# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS
2585# if defined(USE_THREADS)
2586# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2587# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2588# else /* !USE_THREADS */
2589# define PERLVARI(var,type,init) aTHX->var = init;
2590# define PERLVARIC(var,type,init) aTHX->var = init;
2591# endif /* USE_THREADS */
cea2e8a9 2592# else
c5be433b
GS
2593# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2594# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2595# endif
066ef5b5
GS
2596# include "intrpvar.h"
2597# ifndef USE_THREADS
2598# include "thrdvar.h"
2599# endif
2600# undef PERLVAR
51371543 2601# undef PERLVARA
066ef5b5
GS
2602# undef PERLVARI
2603# undef PERLVARIC
3967c732 2604# else
066ef5b5 2605# define PERLVAR(var,type)
51371543 2606# define PERLVARA(var,n,type)
533c011a
NIS
2607# define PERLVARI(var,type,init) PL_##var = init;
2608# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS
2609# include "intrpvar.h"
2610# ifndef USE_THREADS
2611# include "thrdvar.h"
2612# endif
2613# undef PERLVAR
51371543 2614# undef PERLVARA
066ef5b5
GS
2615# undef PERLVARI
2616# undef PERLVARIC
2617# endif
cb68f92d
GS
2618#endif
2619
cb68f92d
GS
2620}
2621
76e3520e 2622STATIC void
cea2e8a9 2623S_init_main_stash(pTHX)
79072805 2624{
463ee0b2 2625 GV *gv;
6e72f9df
PP
2626
2627 /* Note that strtab is a rather special HV. Assumptions are made
2628 about not iterating on it, and not adding tie magic to it.
2629 It is properly deallocated in perl_destruct() */
3280af22 2630 PL_strtab = newHV();
5f08fbcd
GS
2631#ifdef USE_THREADS
2632 MUTEX_INIT(&PL_strtab_mutex);
2633#endif
3280af22
NIS
2634 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2635 hv_ksplit(PL_strtab, 512);
ac27b0f5 2636
3280af22 2637 PL_curstash = PL_defstash = newHV();
79cb57f6 2638 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2639 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2640 SvREFCNT_dec(GvHV(gv));
3280af22 2641 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2642 SvREADONLY_on(gv);
3280af22
NIS
2643 HvNAME(PL_defstash) = savepv("main");
2644 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2645 GvMULTI_on(PL_incgv);
2646 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2647 GvMULTI_on(PL_hintgv);
2648 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2649 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2650 GvMULTI_on(PL_errgv);
2651 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2652 GvMULTI_on(PL_replgv);
cea2e8a9 2653 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2654 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2655 sv_setpvn(ERRSV, "", 0);
3280af22 2656 PL_curstash = PL_defstash;
11faa288 2657 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2658 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2659 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2660 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2661 /* We must init $/ before switches are processed. */
864dbfa3 2662 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2663}
2664
76e3520e 2665STATIC void
cea2e8a9 2666S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2667{
6c4ab083 2668 *fdscript = -1;
79072805 2669
3280af22
NIS
2670 if (PL_e_script) {
2671 PL_origfilename = savepv("-e");
96436eeb 2672 }
6c4ab083
GS
2673 else {
2674 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2675 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2676
2677 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2678 char *s = scriptname + 8;
2679 *fdscript = atoi(s);
2680 while (isDIGIT(*s))
2681 s++;
2682 if (*s) {
2683 scriptname = savepv(s + 1);
3280af22
NIS
2684 Safefree(PL_origfilename);
2685 PL_origfilename = scriptname;
6c4ab083
GS
2686 }
2687 }
2688 }
2689
f4dd75d9
GS
2690#ifdef USE_ITHREADS
2691 Safefree(CopFILE(PL_curcop));
2692#else
2693 SvREFCNT_dec(CopFILEGV(PL_curcop));
2694#endif
57843af0 2695 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2696 if (strEQ(PL_origfilename,"-"))
79072805 2697 scriptname = "";
01f988be 2698 if (*fdscript >= 0) {
3280af22 2699 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2700#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2701 if (PL_rsfp)
2702 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2703#endif
2704 }
3280af22 2705 else if (PL_preprocess) {
46fc3d4c 2706 char *cpp_cfg = CPPSTDIN;
79cb57f6 2707 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2708 SV *cmd = NEWSV(0,0);
2709
2710 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2711 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2712 sv_catpv(cpp, cpp_cfg);
79072805 2713
0df16ed7 2714 sv_catpvn(sv, "-I", 2);
fed7345c 2715 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2716
14953ddc
MB
2717 DEBUG_P(PerlIO_printf(Perl_debug_log,
2718 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2719 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2720#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2721 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2722sed %s -e \"/^[^#]/b\" \
2723 -e \"/^#[ ]*include[ ]/b\" \
2724 -e \"/^#[ ]*define[ ]/b\" \
2725 -e \"/^#[ ]*if[ ]/b\" \
2726 -e \"/^#[ ]*ifdef[ ]/b\" \
2727 -e \"/^#[ ]*ifndef[ ]/b\" \
2728 -e \"/^#[ ]*else/b\" \
2729 -e \"/^#[ ]*elif[ ]/b\" \
2730 -e \"/^#[ ]*undef[ ]/b\" \
2731 -e \"/^#[ ]*endif/b\" \
2732 -e \"s/^#.*//\" \
894356b3 2733 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2734 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2735#else
092bebab 2736# ifdef __OPEN_VM
cea2e8a9 2737 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH
2738%s %s -e '/^[^#]/b' \
2739 -e '/^#[ ]*include[ ]/b' \
2740 -e '/^#[ ]*define[ ]/b' \
2741 -e '/^#[ ]*if[ ]/b' \
2742 -e '/^#[ ]*ifdef[ ]/b' \
2743 -e '/^#[ ]*ifndef[ ]/b' \
2744 -e '/^#[ ]*else/b' \
2745 -e '/^#[ ]*elif[ ]/b' \
2746 -e '/^#[ ]*undef[ ]/b' \
2747 -e '/^#[ ]*endif/b' \
2748 -e 's/^[ ]*#.*//' \
894356b3 2749 %s | %"SVf" %"SVf" %s",
092bebab 2750# else
cea2e8a9 2751 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW
2752%s %s -e '/^[^#]/b' \
2753 -e '/^#[ ]*include[ ]/b' \
2754 -e '/^#[ ]*define[ ]/b' \
2755 -e '/^#[ ]*if[ ]/b' \
2756 -e '/^#[ ]*ifdef[ ]/b' \
2757 -e '/^#[ ]*ifndef[ ]/b' \
2758 -e '/^#[ ]*else/b' \
2759 -e '/^#[ ]*elif[ ]/b' \
2760 -e '/^#[ ]*undef[ ]/b' \
2761 -e '/^#[ ]*endif/b' \
2762 -e 's/^[ ]*#.*//' \
894356b3 2763 %s | %"SVf" -C %"SVf" %s",
092bebab 2764# endif
79072805
LW
2765#ifdef LOC_SED
2766 LOC_SED,
2767#else
2768 "sed",
2769#endif
3280af22 2770 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2771#endif
46fc3d4c 2772 scriptname, cpp, sv, CPPMINUS);
3280af22 2773 PL_doextract = FALSE;
79072805 2774#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2775 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2776#ifdef HAS_SETEUID
b28d0864 2777 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW
2778#else
2779#ifdef HAS_SETREUID
b28d0864 2780 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW
2781#else
2782#ifdef HAS_SETRESUID
b28d0864 2783 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2784#else
b28d0864 2785 PerlProc_setuid(PL_uid);
79072805
LW
2786#endif
2787#endif
85e6fe83 2788#endif
b28d0864 2789 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2790 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW
2791 }
2792#endif /* IAMSUID */
3280af22 2793 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2794 SvREFCNT_dec(cmd);
2795 SvREFCNT_dec(cpp);
79072805
LW
2796 }
2797 else if (!*scriptname) {
bbce6d69 2798 forbid_setid("program input from stdin");
3280af22 2799 PL_rsfp = PerlIO_stdin();
79072805 2800 }
96436eeb 2801 else {
3280af22 2802 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2803#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS
2804 if (PL_rsfp)
2805 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb
PP
2806#endif
2807 }
3280af22 2808 if (!PL_rsfp) {
13281fa4 2809#ifdef DOSUID
a687059c 2810#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2811 if (PL_euid &&
cc49e20b 2812 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS
2813 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2814 {
46fc3d4c 2815 /* try again */
a7cb1f99 2816 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
2817 (int)PERL_REVISION, (int)PERL_VERSION,
2818 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2819 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
2820 }
2821#endif
2822#endif
584d69ec
JH
2823#ifdef IAMSUID
2824 errno = EPERM;
2825 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2826 Strerror(errno));
2827#else
cea2e8a9 2828 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2829 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2830#endif
13281fa4 2831 }
79072805 2832}
8d063cd8 2833
7b89560d
JH
2834/* Mention
2835 * I_SYSSTATVFS HAS_FSTATVFS
2836 * I_SYSMOUNT
c890dc6c 2837 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2838 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2839 * here so that metaconfig picks them up. */
2840
104d25b7 2841#ifdef IAMSUID
864dbfa3 2842STATIC int
e688b231 2843S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2844{
0545a864
JH
2845 int check_okay = 0; /* able to do all the required sys/libcalls */
2846 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2847/*
ad27e871 2848 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2849 * fstatvfs() is UNIX98.
0545a864 2850 * fstatfs() is 4.3 BSD.
ad27e871 2851 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2852 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2853 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2854 */
2855
6439433f
JH
2856#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2857
2858# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2859 defined(HAS_FSTATVFS)
2860# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2861 struct statvfs stfs;
6439433f 2862
104d25b7
JH
2863 check_okay = fstatvfs(fd, &stfs) == 0;
2864 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2865# endif /* fstatvfs */
ac27b0f5 2866
6439433f
JH
2867# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2868 defined(PERL_MOUNT_NOSUID) && \
2869 defined(HAS_FSTATFS) && \
2870 defined(HAS_STRUCT_STATFS) && \
2871 defined(HAS_STRUCT_STATFS_F_FLAGS)
2872# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2873 struct statfs stfs;
6439433f 2874
104d25b7 2875 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2876 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2877# endif /* fstatfs */
2878
2879# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2880 defined(PERL_MOUNT_NOSUID) && \
2881 defined(HAS_FSTAT) && \
2882 defined(HAS_USTAT) && \
2883 defined(HAS_GETMNT) && \
2884 defined(HAS_STRUCT_FS_DATA) && \
2885 defined(NOSTAT_ONE)
2886# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2887 struct stat fdst;
6439433f 2888
0545a864 2889 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2890 struct ustat us;
2891 if (ustat(fdst.st_dev, &us) == 0) {
2892 struct fs_data fsd;
2893 /* NOSTAT_ONE here because we're not examining fields which
2894 * vary between that case and STAT_ONE. */
ad27e871 2895 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2896 size_t cmplen = sizeof(us.f_fname);
2897 if (sizeof(fsd.fd_req.path) < cmplen)
2898 cmplen = sizeof(fsd.fd_req.path);
2899 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2900 fdst.st_dev == fsd.fd_req.dev) {
2901 check_okay = 1;
2902 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2903 }
2904 }
2905 }
2906 }
0545a864 2907 }
6439433f
JH
2908# endif /* fstat+ustat+getmnt */
2909
2910# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2911 defined(HAS_GETMNTENT) && \
2912 defined(HAS_HASMNTOPT) && \
2913 defined(MNTOPT_NOSUID)
2914# define FD_ON_NOSUID_CHECK_OKAY
2915 FILE *mtab = fopen("/etc/mtab", "r");
2916 struct mntent *entry;
2917 struct stat stb, fsb;
104d25b7
JH
2918
2919 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2920 while (entry = getmntent(mtab)) {
2921 if (stat(entry->mnt_dir, &fsb) == 0
2922 && fsb.st_dev == stb.st_dev)
2923 {
2924 /* found the filesystem */
2925 check_okay = 1;
2926 if (hasmntopt(entry, MNTOPT_NOSUID))
2927 on_nosuid = 1;
2928 break;
2929 } /* A single fs may well fail its stat(). */
2930 }
104d25b7
JH
2931 }
2932 if (mtab)
6439433f
JH
2933 fclose(mtab);
2934# endif /* getmntent+hasmntopt */
0545a864 2935
ac27b0f5 2936 if (!check_okay)
0545a864 2937 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2938 return on_nosuid;
2939}
2940#endif /* IAMSUID */
2941
76e3520e 2942STATIC void
cea2e8a9 2943S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2944{
155aba94 2945#ifdef IAMSUID
96436eeb 2946 int which;
155aba94 2947#endif
96436eeb 2948
13281fa4
LW
2949 /* do we need to emulate setuid on scripts? */
2950
2951 /* This code is for those BSD systems that have setuid #! scripts disabled
2952 * in the kernel because of a security problem. Merely defining DOSUID
2953 * in perl will not fix that problem, but if you have disabled setuid
2954 * scripts in the kernel, this will attempt to emulate setuid and setgid
2955 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2956 * root version must be called suidperl or sperlN.NNN. If regular perl
2957 * discovers that it has opened a setuid script, it calls suidperl with
2958 * the same argv that it had. If suidperl finds that the script it has
2959 * just opened is NOT setuid root, it sets the effective uid back to the
2960 * uid. We don't just make perl setuid root because that loses the
2961 * effective uid we had before invoking perl, if it was different from the
2962 * uid.
13281fa4
LW
2963 *
2964 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2965 * be defined in suidperl only. suidperl must be setuid root. The
2966 * Configure script will set this up for you if you want it.
2967 */
a687059c 2968
13281fa4 2969#ifdef DOSUID
6e72f9df 2970 char *s, *s2;
a0d0e21e 2971
b28d0864 2972 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2973 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2974 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2975 I32 len;
2d8e6c8d 2976 STRLEN n_a;
13281fa4 2977
a687059c 2978#ifdef IAMSUID
fe14fcc3 2979#ifndef HAS_SETREUID
a687059c
LW
2980 /* On this access check to make sure the directories are readable,
2981 * there is actually a small window that the user could use to make
2982 * filename point to an accessible directory. So there is a faint
2983 * chance that someone could execute a setuid script down in a
2984 * non-accessible directory. I don't know what to do about that.
2985 * But I don't think it's too important. The manual lies when
2986 * it says access() is useful in setuid programs.
2987 */
cc49e20b 2988 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2989 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2990#else
2991 /* If we can swap euid and uid, then we can determine access rights
2992 * with a simple stat of the file, and then compare device and
2993 * inode to make sure we did stat() on the same file we opened.
2994 * Then we just have to make sure he or she can execute it.
2995 */
2996 {
2997 struct stat tmpstatbuf;
2998
85e6fe83
LW
2999 if (
3000#ifdef HAS_SETREUID
b28d0864 3001 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
3002#else
3003# if HAS_SETRESUID
b28d0864 3004 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3005# endif
85e6fe83 3006#endif
b28d0864 3007 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3008 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3009 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3010 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3011#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3012 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3013 Perl_croak(aTHX_ "Permission denied");
104d25b7 3014#endif
b28d0864
NIS
3015 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3016 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3017 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3018 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3019 }
85e6fe83
LW
3020 if (
3021#ifdef HAS_SETREUID
b28d0864 3022 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
3023#else
3024# if defined(HAS_SETRESUID)
b28d0864 3025 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3026# endif
85e6fe83 3027#endif
b28d0864 3028 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3029 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3030 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3031 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3032 }
fe14fcc3 3033#endif /* HAS_SETREUID */
a687059c
LW
3034#endif /* IAMSUID */
3035
b28d0864 3036 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3037 Perl_croak(aTHX_ "Permission denied");
b28d0864 3038 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3039 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3040 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3041 CopLINE_inc(PL_curcop);
6b88bc9c 3042 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3043 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3044 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3045 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3046 if (*s == ' ') s++;
45d8adaa 3047 while (!isSPACE(*s)) s++;
2d8e6c8d 3048 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
3049 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3050 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3051 Perl_croak(aTHX_ "Not a perl script");
a687059c 3052 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
3053 /*
3054 * #! arg must be what we saw above. They can invoke it by
3055 * mentioning suidperl explicitly, but they may not add any strange
3056 * arguments beyond what #! says if they do invoke suidperl that way.
3057 */
3058 len = strlen(validarg);
3059 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3060 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3061 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
3062
3063#ifndef IAMSUID
b28d0864
NIS
3064 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3065 PL_euid == PL_statbuf.st_uid)
3066 if (!PL_do_undump)
cea2e8a9 3067 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3068FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3069#endif /* IAMSUID */
13281fa4 3070
b28d0864
NIS
3071 if (PL_euid) { /* oops, we're not the setuid root perl */
3072 (void)PerlIO_close(PL_rsfp);
13281fa4 3073#ifndef IAMSUID
46fc3d4c 3074 /* try again */
a7cb1f99 3075 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3076 (int)PERL_REVISION, (int)PERL_VERSION,
3077 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3078#endif
cea2e8a9 3079 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
3080 }
3081
b28d0864 3082 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3083#ifdef HAS_SETEGID
b28d0864 3084 (void)setegid(PL_statbuf.st_gid);
a687059c 3085#else
fe14fcc3 3086#ifdef HAS_SETREGID
b28d0864 3087 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3088#else
3089#ifdef HAS_SETRESGID
b28d0864 3090 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3091#else
b28d0864 3092 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3093#endif
3094#endif
85e6fe83 3095#endif
b28d0864 3096 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3097 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3098 }
b28d0864
NIS
3099 if (PL_statbuf.st_mode & S_ISUID) {
3100 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3101#ifdef HAS_SETEUID
b28d0864 3102 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3103#else
fe14fcc3 3104#ifdef HAS_SETREUID
b28d0864 3105 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3106#else
3107#ifdef HAS_SETRESUID
b28d0864 3108 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3109#else
b28d0864 3110 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3111#endif
3112#endif
85e6fe83 3113#endif
b28d0864 3114 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3115 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3116 }
b28d0864 3117 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3118#ifdef HAS_SETEUID
b28d0864 3119 (void)seteuid((Uid_t)PL_uid);
a687059c 3120#else
fe14fcc3 3121#ifdef HAS_SETREUID
b28d0864 3122 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3123#else
85e6fe83 3124#ifdef HAS_SETRESUID
b28d0864 3125 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3126#else
b28d0864 3127 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3128#endif
a687059c
LW
3129#endif
3130#endif
b28d0864 3131 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3132 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3133 }
748a9306 3134 init_ids();
b28d0864 3135 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3136 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3137 }
3138#ifdef IAMSUID
6b88bc9c 3139 else if (PL_preprocess)
cea2e8a9 3140 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3141 else if (fdscript >= 0)
cea2e8a9 3142 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3143 else
cea2e8a9 3144 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3145
3146 /* We absolutely must clear out any saved ids here, so we */
3147 /* exec the real perl, substituting fd script for scriptname. */
3148 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3149 PerlIO_rewind(PL_rsfp);
3150 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3151 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3152 if (!PL_origargv[which])
cea2e8a9
GS
3153 Perl_croak(aTHX_ "Permission denied");
3154 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3155 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3156#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3157 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3158#endif
a7cb1f99 3159 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3160 (int)PERL_REVISION, (int)PERL_VERSION,
3161 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3162 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3163#endif /* IAMSUID */
a687059c 3164#else /* !DOSUID */
3280af22 3165 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3166#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3167 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3168 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3169 ||
b28d0864 3170 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3171 )
b28d0864 3172 if (!PL_do_undump)
cea2e8a9 3173 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3174FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3175#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3176 /* not set-id, must be wrapped */
a687059c 3177 }
13281fa4 3178#endif /* DOSUID */
79072805 3179}
13281fa4 3180
76e3520e 3181STATIC void
cea2e8a9 3182S_find_beginning(pTHX)
79072805 3183{
6e72f9df 3184 register char *s, *s2;
33b78306
LW
3185
3186 /* skip forward in input to the real script? */
3187
bbce6d69 3188 forbid_setid("-x");
bf4acbe4 3189#ifdef MACOS_TRADITIONAL
084592ab 3190 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3191
bf4acbe4
GS
3192 while (PL_doextract || gMacPerl_AlwaysExtract) {
3193 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3194 if (!gMacPerl_AlwaysExtract)
3195 Perl_croak(aTHX_ "No Perl script found in input\n");
3196
3197 if (PL_doextract) /* require explicit override ? */
3198 if (!OverrideExtract(PL_origfilename))
3199 Perl_croak(aTHX_ "User aborted script\n");
3200 else
3201 PL_doextract = FALSE;
3202
3203 /* Pater peccavi, file does not have #! */
3204 PerlIO_rewind(PL_rsfp);
ac27b0f5 3205
bf4acbe4
GS
3206 break;
3207 }
3208#else
3280af22
NIS
3209 while (PL_doextract) {
3210 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3211 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3212#endif
4f0c37ba
IZ
3213 s2 = s;
3214 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS
3215 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3216 PL_doextract = FALSE;
6e72f9df
PP
3217 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3218 s2 = s;
3219 while (*s == ' ' || *s == '\t') s++;
3220 if (*s++ == '-') {
3221 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3222 if (strnEQ(s2-4,"perl",4))
3223 /*SUPPRESS 530*/
155aba94
GS
3224 while ((s = moreswitches(s)))
3225 ;
33b78306 3226 }
95e8664e
CN
3227#ifdef MACOS_TRADITIONAL
3228 break;
3229#endif
83025b21
LW
3230 }
3231 }
3232}
3233
afe37c7d 3234
76e3520e 3235STATIC void
cea2e8a9 3236S_init_ids(pTHX)
352d5a3a 3237{
d8eceb89
JH
3238 PL_uid = PerlProc_getuid();
3239 PL_euid = PerlProc_geteuid();
3240 PL_gid = PerlProc_getgid();
3241 PL_egid = PerlProc_getegid();
748a9306 3242#ifdef VMS
b28d0864
NIS
3243 PL_uid |= PL_gid << 16;
3244 PL_euid |= PL_egid << 16;
748a9306 3245#endif
3280af22 3246 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3247}
79072805 3248
76e3520e 3249STATIC void
cea2e8a9 3250S_forbid_setid(pTHX_ char *s)
bbce6d69 3251{
3280af22 3252 if (PL_euid != PL_uid)
cea2e8a9 3253 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3254 if (PL_egid != PL_gid)
cea2e8a9 3255 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3256}
3257
1ee4443e
IZ
3258void
3259Perl_init_debugger(pTHX)
748a9306 3260{
1ee4443e
IZ
3261 HV *ostash = PL_curstash;
3262
3280af22
NIS
3263 PL_curstash = PL_debstash;
3264 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3265 AvREAL_off(PL_dbargs);
3266 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3267 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3268 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3269 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3270 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3271 sv_setiv(PL_DBsingle, 0);
3280af22 3272 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3273 sv_setiv(PL_DBtrace, 0);
3280af22 3274 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3275 sv_setiv(PL_DBsignal, 0);
1ee4443e 3276 PL_curstash = ostash;
352d5a3a
LW
3277}
3278
2ce36478
SM
3279#ifndef STRESS_REALLOC
3280#define REASONABLE(size) (size)
3281#else
3282#define REASONABLE(size) (1) /* unreasonable */
3283#endif
3284
11343788 3285void
cea2e8a9 3286Perl_init_stacks(pTHX)
79072805 3287{
e336de0d 3288 /* start with 128-item stack and 8K cxstack */
3280af22 3289 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3290 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3291 PL_curstackinfo->si_type = PERLSI_MAIN;
3292 PL_curstack = PL_curstackinfo->si_stack;
3293 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3294
3280af22
NIS
3295 PL_stack_base = AvARRAY(PL_curstack);
3296 PL_stack_sp = PL_stack_base;
3297 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3298
3280af22
NIS
3299 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3300 PL_tmps_floor = -1;
3301 PL_tmps_ix = -1;
3302 PL_tmps_max = REASONABLE(128);
8990e307 3303
3280af22
NIS
3304 New(54,PL_markstack,REASONABLE(32),I32);
3305 PL_markstack_ptr = PL_markstack;
3306 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3307
ce2f7c3b 3308 SET_MARK_OFFSET;
e336de0d 3309
3280af22
NIS
3310 New(54,PL_scopestack,REASONABLE(32),I32);
3311 PL_scopestack_ix = 0;
3312 PL_scopestack_max = REASONABLE(32);
79072805 3313
3280af22
NIS
3314 New(54,PL_savestack,REASONABLE(128),ANY);
3315 PL_savestack_ix = 0;
3316 PL_savestack_max = REASONABLE(128);
79072805 3317
3280af22
NIS
3318 New(54,PL_retstack,REASONABLE(16),OP*);
3319 PL_retstack_ix = 0;
3320 PL_retstack_max = REASONABLE(16);
378cc40b 3321}
33b78306 3322
2ce36478
SM
3323#undef REASONABLE
3324
76e3520e 3325STATIC void
cea2e8a9 3326S_nuke_stacks(pTHX)
6e72f9df 3327{
3280af22
NIS
3328 while (PL_curstackinfo->si_next)
3329 PL_curstackinfo = PL_curstackinfo->si_next;
3330 while (PL_curstackinfo) {
3331 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3332 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3333 Safefree(PL_curstackinfo->si_cxstack);
3334 Safefree(PL_curstackinfo);
3335 PL_curstackinfo = p;
e336de0d 3336 }
3280af22
NIS
3337 Safefree(PL_tmps_stack);
3338 Safefree(PL_markstack);
3339 Safefree(PL_scopestack);
3340 Safefree(PL_savestack);
3341 Safefree(PL_retstack);
378cc40b 3342}
33b78306 3343
76e3520e 3344#ifndef PERL_OBJECT
760ac839 3345static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3346#endif
7aa04957 3347
76e3520e 3348STATIC void
cea2e8a9 3349S_init_lexer(pTHX)
8990e307 3350{
76e3520e
GS
3351#ifdef PERL_OBJECT
3352 PerlIO *tmpfp;
3353#endif
3280af22
NIS
3354 tmpfp = PL_rsfp;
3355 PL_rsfp = Nullfp;
3356 lex_start(PL_linestr);
3357 PL_rsfp = tmpfp;
79cb57f6 3358 PL_subname = newSVpvn("main",4);
8990e307
LW
3359}
3360
76e3520e 3361STATIC void
cea2e8a9 3362S_init_predump_symbols(pTHX)
45d8adaa 3363{
93a17b20 3364 GV *tmpgv;
af8c498a 3365 IO *io;
79072805 3366
864dbfa3 3367 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3368 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3369 GvMULTI_on(PL_stdingv);
af8c498a 3370 io = GvIOp(PL_stdingv);
a04651f4 3371 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3372 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3373 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3374 GvMULTI_on(tmpgv);
af8c498a 3375 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3376
85e6fe83 3377 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3378 GvMULTI_on(tmpgv);
af8c498a 3379 io = GvIOp(tmpgv);
a04651f4 3380 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3381 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3382 setdefout(tmpgv);
adbc6bb1 3383 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3384 GvMULTI_on(tmpgv);
af8c498a 3385 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3386
bf49b057
GS
3387 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3388 GvMULTI_on(PL_stderrgv);
3389 io = GvIOp(PL_stderrgv);
a04651f4 3390 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3391 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3392 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3393 GvMULTI_on(tmpgv);
af8c498a 3394 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3395
3280af22 3396 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3397
bf4acbe4
GS
3398 if (PL_osname)
3399 Safefree(PL_osname);
3400 PL_osname = savepv(OSNAME);
79072805 3401}
33b78306 3402
76e3520e 3403STATIC void
cea2e8a9 3404S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3405{
79072805
LW
3406 char *s;
3407 SV *sv;
3408 GV* tmpgv;
9cbac4c7 3409#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3410 char **dup_env_base = 0;
103a7189 3411 int dup_env_count = 0;
9cbac4c7 3412#endif
fe14fcc3 3413
79072805 3414 argc--,argv++; /* skip name of script */
3280af22 3415 if (PL_doswitches) {
79072805
LW
3416 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3417 if (!argv[0][1])
3418 break;
379d538a 3419 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3420 argc--,argv++;
3421 break;
3422 }
155aba94 3423 if ((s = strchr(argv[0], '='))) {
79072805 3424 *s++ = '\0';
85e6fe83 3425 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3426 }
3427 else
85e6fe83 3428 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3429 }
79072805 3430 }
3280af22
NIS
3431 PL_toptarget = NEWSV(0,0);
3432 sv_upgrade(PL_toptarget, SVt_PVFM);
3433 sv_setpvn(PL_toptarget, "", 0);
3434 PL_bodytarget = NEWSV(0,0);
3435 sv_upgrade(PL_bodytarget, SVt_PVFM);
3436 sv_setpvn(PL_bodytarget, "", 0);
3437 PL_formtarget = PL_bodytarget;
79072805 3438
bbce6d69 3439 TAINT;
155aba94 3440 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS
3441#ifdef MACOS_TRADITIONAL
3442 /* $0 is not majick on a Mac */
3443 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3444#else
3280af22 3445 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3446 magicname("0", "0", 1);
bf4acbe4 3447#endif
79072805 3448 }
155aba94 3449 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3450#ifdef OS2
23da6c43 3451 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3452#else
3280af22 3453 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3454#endif
155aba94 3455 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS
3456 GvMULTI_on(PL_argvgv);
3457 (void)gv_AVadd(PL_argvgv);
3458 av_clear(GvAVn(PL_argvgv));
79072805 3459 for (; argc > 0; argc--,argv++) {
729a02f2
GS
3460 SV *sv = newSVpv(argv[0],0);
3461 av_push(GvAVn(PL_argvgv),sv);
3462 if (PL_widesyscalls)
e84ff256 3463 (void)sv_utf8_decode(sv);
79072805
LW
3464 }
3465 }
155aba94 3466 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3467 HV *hv;
3280af22
NIS
3468 GvMULTI_on(PL_envgv);
3469 hv = GvHVn(PL_envgv);
14befaf4