This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
https://perl5.git.perl.org / perl5.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
The 7-bit jis seems to be the hanging one.
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
be3c0a43 3 * Copyright (c) 1987-2002 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
7114a2d2 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
acfe0abc 28static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
4d1ff10f 42#if defined(USE_5005THREADS)
06d86050
GS		 43# define INIT_TLS_AND_INTERP \
44 STMT_START { \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
47 INIT_THREADS; \
48 ALLOC_THREAD_KEY; \
49 } \
50 } STMT_END
51#else
52# if defined(USE_ITHREADS)
53# define INIT_TLS_AND_INTERP \
54 STMT_START { \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
57 INIT_THREADS; \
58 ALLOC_THREAD_KEY; \
534825c4
GS		 59 PERL_SET_THX(my_perl); \
60 OP_REFCNT_INIT; \
61 } \
62 else { \
63 PERL_SET_THX(my_perl); \
06d86050 64 } \
06d86050
GS		 65 } STMT_END
66# else
67# define INIT_TLS_AND_INTERP \
68 STMT_START { \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
71 } \
72 PERL_SET_THX(my_perl); \
73 } STMT_END
74# endif
75#endif
76
32e30700
GS		 77#ifdef PERL_IMPLICIT_SYS
78PerlInterpreter *
7766f137
GS		 79perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
84{
85 PerlInterpreter *my_perl;
32e30700
GS		 86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 88 INIT_TLS_AND_INTERP;
32e30700
GS		 89 Zero(my_perl, 1, PerlInterpreter);
90 PL_Mem = ipM;
7766f137
GS		 91 PL_MemShared = ipMS;
92 PL_MemParse = ipMP;
32e30700
GS		 93 PL_Env = ipE;
94 PL_StdIO = ipStd;
95 PL_LIO = ipLIO;
96 PL_Dir = ipD;
97 PL_Sock = ipS;
98 PL_Proc = ipP;
7766f137 99
32e30700
GS		 100 return my_perl;
101}
102#else
954c1994
GS		 103
104/*
ccfc67b7
JH		 105=head1 Embedding Functions
106
954c1994
GS		 107=for apidoc perl_alloc
108
109Allocates a new Perl interpreter. See L<perlembed>.
110
111=cut
112*/
113
93a17b20 114PerlInterpreter *
cea2e8a9 115perl_alloc(void)
79072805 116{
cea2e8a9 117 PerlInterpreter *my_perl;
35d7cf2c
JH		 118#ifdef USE_5005THREADS
119 dTHX;
120#endif
79072805 121
54aff467 122 /* New() needs interpreter, so call malloc() instead */
e8ee3774 123 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 124
06d86050 125 INIT_TLS_AND_INTERP;
dedcbb81 126 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 127 return my_perl;
79072805 128}
32e30700 129#endif /* PERL_IMPLICIT_SYS */
79072805 130
954c1994
GS		 131/*
132=for apidoc perl_construct
133
134Initializes a new Perl interpreter. See L<perlembed>.
135
136=cut
137*/
138
79072805 139void
0cb96387 140perl_construct(pTHXx)
79072805 141{
4d1ff10f 142#ifdef USE_5005THREADS
a863c7d1 143#ifndef FAKE_THREADS
e1f15930 144 struct perl_thread *thr = NULL;
a863c7d1 145#endif /* FAKE_THREADS */
4d1ff10f 146#endif /* USE_5005THREADS */
ba869deb 147
8990e307 148#ifdef MULTIPLICITY
54aff467 149 init_interp();
ac27b0f5 150 PL_perl_destruct_level = 1;
54aff467
GS		 151#else
152 if (PL_perl_destruct_level > 0)
153 init_interp();
154#endif
155
33f46ff6 156 /* Init the real globals (and main thread)? */
3280af22 157 if (!PL_linestr) {
4d1ff10f 158#ifdef USE_5005THREADS
533c011a 159 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 160 /*
161 * Safe to use basic SV functions from now on (though
162 * not things like mortals or tainting yet).
163 */
533c011a
NIS		 164 MUTEX_INIT(&PL_eval_mutex);
165 COND_INIT(&PL_eval_cond);
166 MUTEX_INIT(&PL_threads_mutex);
167 COND_INIT(&PL_nthreads_cond);
ba869deb 168# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 169 MUTEX_INIT(&PL_svref_mutex);
ba869deb 170# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 171
5ff3f7a4 172 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 173 MUTEX_INIT(&PL_sv_lock_mutex);
174 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 175
199100c8 176 thr = init_main_thread();
4d1ff10f 177#endif /* USE_5005THREADS */
11343788 178
14dd3ad8 179#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 180 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 181#endif
312caa8e 182
2aea9f8a
GS		 183 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
184
3280af22
NIS		 185 PL_linestr = NEWSV(65,79);
186 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 187
3280af22 188 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 189 /* set read-only and try to insure than we wont see REFCNT==0
190 very often */
191
3280af22
NIS		 192 SvREADONLY_on(&PL_sv_undef);
193 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 194
3280af22
NIS		 195 sv_setpv(&PL_sv_no,PL_No);
196 SvNV(&PL_sv_no);
197 SvREADONLY_on(&PL_sv_no);
198 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 199
3280af22
NIS		 200 sv_setpv(&PL_sv_yes,PL_Yes);
201 SvNV(&PL_sv_yes);
202 SvREADONLY_on(&PL_sv_yes);
203 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 204 }
79072805 205
cea2e8a9 206 PL_sighandlerp = Perl_sighandler;
3280af22 207 PL_pidstatus = newHV();
79072805
LW		 208 }
209
8bfdd7d9 210 PL_rs = newSVpvn("\n", 1);
dc92893f 211
cea2e8a9 212 init_stacks();
79072805 213
748a9306 214 init_ids();
3280af22 215 PL_lex_state = LEX_NOTPARSING;
a5f75d66 216
312caa8e 217 JMPENV_BOOTSTRAP;
f86702cc 218 STATUS_ALL_SUCCESS;
219
0672f40e 220 init_i18nl10n(1);
36477c24 221 SET_NUMERIC_STANDARD();
0b5b802d 222
a7cb1f99
GS		 223 {
224 U8 *s;
225 PL_patchlevel = NEWSV(0,4);
155aba94 226 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 227 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 228 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 229 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 230 /* Build version strings using "native" characters */
231 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
232 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
233 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 234 *s = '\0';
235 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
236 SvPOK_on(PL_patchlevel);
237 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
238 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 239#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 240 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 241#endif
a7cb1f99
GS		 242 ;
243 SvNOK_on(PL_patchlevel); /* dual valued */
244 SvUTF8_on(PL_patchlevel);
245 SvREADONLY_on(PL_patchlevel);
246 }
79072805 247
ab821d7f 248#if defined(LOCAL_PATCH_COUNT)
3280af22 249 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 250#endif
251
52853b95
GS		 252#ifdef HAVE_INTERP_INTERN
253 sys_intern_init();
254#endif
255
3a1ee7e8 256 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 257
3280af22
NIS		 258 PL_fdpid = newAV(); /* for remembering popen pids by fd */
259 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 260 PL_errors = newSVpvn("",0);
1fcf4c12 261#ifdef USE_ITHREADS
13137afc
AB		 262 PL_regex_padav = newAV();
263 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
264 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 265#endif
e5dd39fc
AB		 266#ifdef USE_REENTRANT_API
267 New(31337, PL_reentrant_buffer,1, REBUF);
268 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
269#endif
3d47000e
AB		 270
271 /* Note that strtab is a rather special HV. Assumptions are made
272 about not iterating on it, and not adding tie magic to it.
273 It is properly deallocated in perl_destruct() */
274 PL_strtab = newHV();
275
276#ifdef USE_5005THREADS
277 MUTEX_INIT(&PL_strtab_mutex);
278#endif
279 HvSHAREKEYS_off(PL_strtab); /* mandatory */
280 hv_ksplit(PL_strtab, 512);
281
0631ea03
AB		 282#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
283 _dyld_lookup_and_bind
284 ("__environ", (unsigned long *) &environ_pointer, NULL);
285#endif /* environ */
286
287#ifdef USE_ENVIRON_ARRAY
288 PL_origenviron = environ;
289#endif
290
8990e307 291 ENTER;
79072805
LW		 292}
293
954c1994
GS		 294/*
295=for apidoc perl_destruct
296
297Shuts down a Perl interpreter. See L<perlembed>.
298
299=cut
300*/
301
31d77e54 302int
0cb96387 303perl_destruct(pTHXx)
79072805 304{
7c474504 305 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 306 HV *hv;
4d1ff10f 307#ifdef USE_5005THREADS
33f46ff6 308 Thread t;
cea2e8a9 309 dTHX;
4d1ff10f 310#endif /* USE_5005THREADS */
8990e307 311
7766f137
GS		 312 /* wait for all pseudo-forked children to finish */
313 PERL_WAIT_FOR_CHILDREN;
314
4d1ff10f 315#ifdef USE_5005THREADS
0f15f207 316#ifndef FAKE_THREADS
8023c3ce
MB		 317 /* Pass 1 on any remaining threads: detach joinables, join zombies */
318 retry_cleanup:
533c011a 319 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 320 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 321 "perl_destruct: waiting for %d threads...\n",
533c011a 322 PL_nthreads - 1));
33f46ff6 323 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 324 MUTEX_LOCK(&t->mutex);
325 switch (ThrSTATE(t)) {
326 AV *av;
c7848ba1 327 case THRf_ZOMBIE:
bf49b057 328 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 329 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 330 ThrSETSTATE(t, THRf_DEAD);
331 MUTEX_UNLOCK(&t->mutex);
533c011a 332 PL_nthreads--;
8023c3ce
MB		 333 /*
334 * The SvREFCNT_dec below may take a long time (e.g. av
335 * may contain an object scalar whose destructor gets
336 * called) so we have to unlock threads_mutex and start
337 * all over again.
338 */
533c011a 339 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 340 JOIN(t, &av);
605e5515 341 SvREFCNT_dec((SV*)av);
bf49b057 342 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 343 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 344 goto retry_cleanup;
c7848ba1 345 case THRf_R_JOINABLE:
bf49b057 346 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 347 "perl_destruct: detaching thread %p\n", t));
348 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 349 /*
c7848ba1
MB		 350 * We unlock threads_mutex and t->mutex in the opposite order
351 * from which we locked them just so that DETACH won't
352 * deadlock if it panics. It's only a breach of good style
353 * not a bug since they are unlocks not locks.
354 */
533c011a 355 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 356 DETACH(t);
357 MUTEX_UNLOCK(&t->mutex);
8023c3ce 358 goto retry_cleanup;
c7848ba1 359 default:
bf49b057 360 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 361 "perl_destruct: ignoring %p (state %u)\n",
362 t, ThrSTATE(t)));
363 MUTEX_UNLOCK(&t->mutex);
c7848ba1 364 /* fall through and out */
33f46ff6
MB		 365 }
366 }
8023c3ce
MB		 367 /* We leave the above "Pass 1" loop with threads_mutex still locked */
368
369 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 370 while (PL_nthreads > 1)
11343788 371 {
bf49b057 372 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 373 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 374 PL_nthreads - 1));
375 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 376 }
377 /* At this point, we're the last thread */
533c011a 378 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 379 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 380 MUTEX_DESTROY(&PL_threads_mutex);
381 COND_DESTROY(&PL_nthreads_cond);
b57a092c 382 PL_nthreads--;
0f15f207 383#endif /* !defined(FAKE_THREADS) */
4d1ff10f 384#endif /* USE_5005THREADS */
11343788 385
3280af22 386 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 387#ifdef DEBUGGING
388 {
389 char *s;
155aba94 390 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 391 int i = atoi(s);
392 if (destruct_level < i)
393 destruct_level = i;
394 }
4633a7c4
LW		 395 }
396#endif
397
31d77e54
AB		 398
399 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 400 dJMPENV;
401 int x = 0;
402
403 JMPENV_PUSH(x);
404 if (PL_endav && !PL_minus_c)
405 call_list(PL_scopestack_ix, PL_endav);
406 JMPENV_POP;
26f423df 407 }
f3faeb53 408 LEAVE;
a0d0e21e
LW		 409 FREETMPS;
410
ff0cee69 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)
acfe0abc 449 PL_exitlist[PL_exitlistlen].fn(aTHX_ 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
56a2bab7
NIS		 457#if defined(PERLIO_LAYERS)
458 /* No more IO - including error messages ! */
459 PerlIO_cleanup(aTHX);
460#endif
461
a0d0e21e 462 /* The exit() function will do everything that needs doing. */
31d77e54 463 return STATUS_NATIVE_EXPORT;;
a0d0e21e 464 }
5dd60ef7 465
551a8b83 466 /* jettison our possibly duplicated environment */
4b647fb0
DM		 467 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
468 * so we certainly shouldn't free it here
469 */
470#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
551a8b83
JH		 471 if (environ != PL_origenviron) {
472 I32 i;
473
474 for (i = 0; environ[i]; i++)
4b420006 475 safesysfree(environ[i]);
0631ea03 476
4b420006
JH		 477 /* Must use safesysfree() when working with environ. */
478 safesysfree(environ);
551a8b83
JH		 479
480 environ = PL_origenviron;
481 }
482#endif
483
5f8cb046
DM		 484#ifdef USE_ITHREADS
485 /* the syntax tree is shared between clones
486 * so op_free(PL_main_root) only ReREFCNT_dec's
487 * REGEXPs in the parent interpreter
488 * we need to manually ReREFCNT_dec for the clones
489 */
490 {
491 I32 i = AvFILLp(PL_regex_padav) + 1;
492 SV **ary = AvARRAY(PL_regex_padav);
493
494 while (i) {
35061a7e 495 SV *resv = ary[--i];
ba89bb6e 496 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 497
498 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 499 /* this is PL_reg_curpm, already freed
35061a7e
DM		 500 * flag is set in regexec.c:S_regtry
501 */
502 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 503 }
1cc8b4c5
AB		 504 else if(SvREPADTMP(resv)) {
505 SvREPADTMP_off(resv);
506 }
35061a7e 507 else {
5f8cb046
DM		 508 ReREFCNT_dec(re);
509 }
510 }
511 }
512 SvREFCNT_dec(PL_regex_padav);
513 PL_regex_padav = Nullav;
514 PL_regex_pad = NULL;
515#endif
516
5f05dabc 517 /* loosen bonds of global variables */
518
3280af22
NIS		 519 if(PL_rsfp) {
520 (void)PerlIO_close(PL_rsfp);
521 PL_rsfp = Nullfp;
8ebc5c01 522 }
523
524 /* Filters for program text */
3280af22
NIS		 525 SvREFCNT_dec(PL_rsfp_filters);
526 PL_rsfp_filters = Nullav;
8ebc5c01 527
528 /* switches */
3280af22
NIS		 529 PL_preprocess = FALSE;
530 PL_minus_n = FALSE;
531 PL_minus_p = FALSE;
532 PL_minus_l = FALSE;
533 PL_minus_a = FALSE;
534 PL_minus_F = FALSE;
535 PL_doswitches = FALSE;
599cee73 536 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 537 PL_doextract = FALSE;
538 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 539 PL_unsafe = FALSE;
540
541 Safefree(PL_inplace);
542 PL_inplace = Nullch;
a7cb1f99 543 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 544
545 if (PL_e_script) {
546 SvREFCNT_dec(PL_e_script);
547 PL_e_script = Nullsv;
8ebc5c01 548 }
549
bc0a45ed
DM		 550 while (--PL_origargc >= 0) {
551 Safefree(PL_origargv[PL_origargc]);
552 }
553 Safefree(PL_origargv);
554
8ebc5c01 555 /* magical thingies */
556
7889fe52
NIS		 557 SvREFCNT_dec(PL_ofs_sv); /* $, */
558 PL_ofs_sv = Nullsv;
5f05dabc 559
7889fe52
NIS		 560 SvREFCNT_dec(PL_ors_sv); /* $\ */
561 PL_ors_sv = Nullsv;
8ebc5c01 562
3280af22
NIS		 563 SvREFCNT_dec(PL_rs); /* $/ */
564 PL_rs = Nullsv;
dc92893f 565
d33b2eba
GS		 566 PL_multiline = 0; /* $* */
567 Safefree(PL_osname); /* $^O */
568 PL_osname = Nullch;
5f05dabc 569
3280af22
NIS		 570 SvREFCNT_dec(PL_statname);
571 PL_statname = Nullsv;
572 PL_statgv = Nullgv;
5f05dabc 573
8ebc5c01 574 /* defgv, aka *_ should be taken care of elsewhere */
575
8ebc5c01 576 /* clean up after study() */
3280af22
NIS		 577 SvREFCNT_dec(PL_lastscream);
578 PL_lastscream = Nullsv;
579 Safefree(PL_screamfirst);
580 PL_screamfirst = 0;
581 Safefree(PL_screamnext);
582 PL_screamnext = 0;
8ebc5c01 583
7d5ea4e7
GS		 584 /* float buffer */
585 Safefree(PL_efloatbuf);
586 PL_efloatbuf = Nullch;
587 PL_efloatsize = 0;
588
8ebc5c01 589 /* startup and shutdown function lists */
3280af22 590 SvREFCNT_dec(PL_beginav);
5a837c8f 591 SvREFCNT_dec(PL_beginav_save);
3280af22 592 SvREFCNT_dec(PL_endav);
7d30b5c4 593 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 594 SvREFCNT_dec(PL_initav);
595 PL_beginav = Nullav;
5a837c8f 596 PL_beginav_save = Nullav;
3280af22 597 PL_endav = Nullav;
7d30b5c4 598 PL_checkav = Nullav;
3280af22 599 PL_initav = Nullav;
5618dfe8 600
8ebc5c01 601 /* shortcuts just get cleared */
3280af22 602 PL_envgv = Nullgv;
3280af22
NIS		 603 PL_incgv = Nullgv;
604 PL_hintgv = Nullgv;
605 PL_errgv = Nullgv;
606 PL_argvgv = Nullgv;
607 PL_argvoutgv = Nullgv;
608 PL_stdingv = Nullgv;
bf49b057 609 PL_stderrgv = Nullgv;
3280af22
NIS		 610 PL_last_in_gv = Nullgv;
611 PL_replgv = Nullgv;
5c831c24 612 PL_debstash = Nullhv;
8ebc5c01 613
614 /* reset so print() ends up where we expect */
615 setdefout(Nullgv);
5c831c24 616
7a1c5554
GS		 617 SvREFCNT_dec(PL_argvout_stack);
618 PL_argvout_stack = Nullav;
8ebc5c01 619
5c831c24
GS		 620 SvREFCNT_dec(PL_modglobal);
621 PL_modglobal = Nullhv;
622 SvREFCNT_dec(PL_preambleav);
623 PL_preambleav = Nullav;
624 SvREFCNT_dec(PL_subname);
625 PL_subname = Nullsv;
626 SvREFCNT_dec(PL_linestr);
627 PL_linestr = Nullsv;
628 SvREFCNT_dec(PL_pidstatus);
629 PL_pidstatus = Nullhv;
630 SvREFCNT_dec(PL_toptarget);
631 PL_toptarget = Nullsv;
632 SvREFCNT_dec(PL_bodytarget);
633 PL_bodytarget = Nullsv;
634 PL_formtarget = Nullsv;
635
d33b2eba 636 /* free locale stuff */
b9582b6a 637#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 638 Safefree(PL_collation_name);
639 PL_collation_name = Nullch;
b9582b6a 640#endif
d33b2eba 641
b9582b6a 642#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 643 Safefree(PL_numeric_name);
644 PL_numeric_name = Nullch;
a453c169 645 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 646#endif
d33b2eba 647
5c831c24
GS		 648 /* clear utf8 character classes */
649 SvREFCNT_dec(PL_utf8_alnum);
650 SvREFCNT_dec(PL_utf8_alnumc);
651 SvREFCNT_dec(PL_utf8_ascii);
652 SvREFCNT_dec(PL_utf8_alpha);
653 SvREFCNT_dec(PL_utf8_space);
654 SvREFCNT_dec(PL_utf8_cntrl);
655 SvREFCNT_dec(PL_utf8_graph);
656 SvREFCNT_dec(PL_utf8_digit);
657 SvREFCNT_dec(PL_utf8_upper);
658 SvREFCNT_dec(PL_utf8_lower);
659 SvREFCNT_dec(PL_utf8_print);
660 SvREFCNT_dec(PL_utf8_punct);
661 SvREFCNT_dec(PL_utf8_xdigit);
662 SvREFCNT_dec(PL_utf8_mark);
663 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 664 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 665 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 666 SvREFCNT_dec(PL_utf8_tofold);
5c831c24
GS		 667 PL_utf8_alnum = Nullsv;
668 PL_utf8_alnumc = Nullsv;
669 PL_utf8_ascii = Nullsv;
670 PL_utf8_alpha = Nullsv;
671 PL_utf8_space = Nullsv;
672 PL_utf8_cntrl = Nullsv;
673 PL_utf8_graph = Nullsv;
674 PL_utf8_digit = Nullsv;
675 PL_utf8_upper = Nullsv;
676 PL_utf8_lower = Nullsv;
677 PL_utf8_print = Nullsv;
678 PL_utf8_punct = Nullsv;
679 PL_utf8_xdigit = Nullsv;
680 PL_utf8_mark = Nullsv;
681 PL_utf8_toupper = Nullsv;
682 PL_utf8_totitle = Nullsv;
683 PL_utf8_tolower = Nullsv;
b4e400f9 684 PL_utf8_tofold = Nullsv;
5c831c24 685
971a9dd3
GS		 686 if (!specialWARN(PL_compiling.cop_warnings))
687 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 688 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 689 if (!specialCopIO(PL_compiling.cop_io))
690 SvREFCNT_dec(PL_compiling.cop_io);
691 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS		 692 CopFILE_free(&PL_compiling);
693 CopSTASH_free(&PL_compiling);
5c831c24 694
a0d0e21e 695 /* Prepare to destruct main symbol table. */
5f05dabc 696
3280af22
NIS		 697 hv = PL_defstash;
698 PL_defstash = 0;
a0d0e21e 699 SvREFCNT_dec(hv);
5c831c24
GS		 700 SvREFCNT_dec(PL_curstname);
701 PL_curstname = Nullsv;
a0d0e21e 702
5a844595
GS		 703 /* clear queued errors */
704 SvREFCNT_dec(PL_errors);
705 PL_errors = Nullsv;
706
a0d0e21e 707 FREETMPS;
0453d815 708 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 709 if (PL_scopestack_ix != 0)
0453d815
PM		 710 Perl_warner(aTHX_ WARN_INTERNAL,
711 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 712 (long)PL_scopestack_ix);
713 if (PL_savestack_ix != 0)
0453d815
PM		 714 Perl_warner(aTHX_ WARN_INTERNAL,
715 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 716 (long)PL_savestack_ix);
717 if (PL_tmps_floor != -1)
0453d815 718 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 719 (long)PL_tmps_floor + 1);
a0d0e21e 720 if (cxstack_ix != -1)
0453d815 721 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 722 (long)cxstack_ix + 1);
a0d0e21e 723 }
8990e307
LW		 724
725 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 726 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 727 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 728
729 /* the 2 is for PL_fdpid and PL_strtab */
730 while (PL_sv_count > 2 && sv_clean_all())
731 ;
732
d33b2eba
GS		 733 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
734 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 735 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
736 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 737
d4777f27
GS		 738 AvREAL_off(PL_fdpid); /* no surviving entries */
739 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 740 PL_fdpid = Nullav;
741
6c644e78
GS		 742#ifdef HAVE_INTERP_INTERN
743 sys_intern_clear();
744#endif
745
6e72f9df 746 /* Destruct the global string table. */
747 {
748 /* Yell and reset the HeVAL() slots that are still holding refcounts,
749 * so that sv_free() won't fail on them.
750 */
751 I32 riter;
752 I32 max;
753 HE *hent;
754 HE **array;
755
756 riter = 0;
3280af22
NIS		 757 max = HvMAX(PL_strtab);
758 array = HvARRAY(PL_strtab);
6e72f9df 759 hent = array[0];
760 for (;;) {
0453d815
PM		 761 if (hent && ckWARN_d(WARN_INTERNAL)) {
762 Perl_warner(aTHX_ WARN_INTERNAL,
763 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 764 HeVAL(hent) - Nullsv, HeKEY(hent));
765 HeVAL(hent) = Nullsv;
766 hent = HeNEXT(hent);
767 }
768 if (!hent) {
769 if (++riter > max)
770 break;
771 hent = array[riter];
772 }
773 }
774 }
3280af22 775 SvREFCNT_dec(PL_strtab);
6e72f9df 776
e652bb2f 777#ifdef USE_ITHREADS
a0739874
DM		 778 /* free the pointer table used for cloning */
779 ptr_table_free(PL_ptr_table);
53186e96 780#endif
a0739874 781
d33b2eba
GS		 782 /* free special SVs */
783
784 SvREFCNT(&PL_sv_yes) = 0;
785 sv_clear(&PL_sv_yes);
786 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 787 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 788
789 SvREFCNT(&PL_sv_no) = 0;
790 sv_clear(&PL_sv_no);
791 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 792 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 793
794 SvREFCNT(&PL_sv_undef) = 0;
795 SvREADONLY_off(&PL_sv_undef);
d33b2eba 796
0453d815
PM		 797 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
798 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 799
56a2bab7 800#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 801 /* No more IO - including error messages ! */
802 PerlIO_cleanup(aTHX);
803#endif
804
3280af22 805 Safefree(PL_origfilename);
3280af22 806 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 807 if (PL_reg_curpm)
808 Safefree(PL_reg_curpm);
82ba1be6 809 Safefree(PL_reg_poscache);
3280af22
NIS		 810 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
811 Safefree(PL_op_mask);
cf36064f
GS		 812 Safefree(PL_psig_ptr);
813 Safefree(PL_psig_name);
2c2666fc 814 Safefree(PL_bitcount);
ce08f86c 815 Safefree(PL_psig_pend);
6e72f9df 816 nuke_stacks();
3280af22 817 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 818
a0d0e21e 819 DEBUG_P(debprofdump());
4d1ff10f 820#ifdef USE_5005THREADS
5f08fbcd 821 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 822 MUTEX_DESTROY(&PL_sv_mutex);
823 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 824 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 825 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 826 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 827#ifdef EMULATE_ATOMIC_REFCOUNTS
828 MUTEX_DESTROY(&PL_svref_mutex);
829#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 830
8023c3ce 831 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 832 Safefree(SvPVX(PL_thrsv));
833 Safefree(SvANY(PL_thrsv));
834 Safefree(PL_thrsv);
835 PL_thrsv = Nullsv;
4d1ff10f 836#endif /* USE_5005THREADS */
d33b2eba 837
e5dd39fc
AB		 838#ifdef USE_REENTRANT_API
839 Safefree(PL_reentrant_buffer->tmbuff);
840 Safefree(PL_reentrant_buffer);
841#endif
842
612f20c3
GS		 843 sv_free_arenas();
844
fc36a67e 845 /* As the absolutely last thing, free the non-arena SV for mess() */
846
3280af22 847 if (PL_mess_sv) {
9c63abab
GS		 848 /* it could have accumulated taint magic */
849 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
850 MAGIC* mg;
851 MAGIC* moremagic;
852 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
853 moremagic = mg->mg_moremagic;
14befaf4
DM		 854 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
855 && mg->mg_len >= 0)
9c63abab
GS		 856 Safefree(mg->mg_ptr);
857 Safefree(mg);
858 }
859 }
fc36a67e 860 /* we know that type >= SVt_PV */
155aba94 861 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 862 Safefree(SvPVX(PL_mess_sv));
863 Safefree(SvANY(PL_mess_sv));
864 Safefree(PL_mess_sv);
865 PL_mess_sv = Nullsv;
fc36a67e 866 }
31d77e54 867 return STATUS_NATIVE_EXPORT;
79072805
LW		 868}
869
954c1994
GS		 870/*
871=for apidoc perl_free
872
873Releases a Perl interpreter. See L<perlembed>.
874
875=cut
876*/
877
79072805 878void
0cb96387 879perl_free(pTHXx)
79072805 880{
acfe0abc 881#if defined(WIN32) || defined(NETWARE)
ce3e5b80 882# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 883# ifdef NETWARE
884 void *host = nw_internal_host;
885# else
886 void *host = w32_internal_host;
887# endif
ce3e5b80 888 PerlMem_free(aTHXx);
acfe0abc
GS		 889# ifdef NETWARE
890 nw5_delete_internal_host(host);
891# else
892 win32_delete_internal_host(host);
893# endif
1c0ca838
GS		 894# else
895 PerlMem_free(aTHXx);
896# endif
acfe0abc
GS		 897#else
898 PerlMem_free(aTHXx);
76e3520e 899#endif
79072805
LW		 900}
901
4b556e6c 902void
864dbfa3 903Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 904{
3280af22
NIS		 905 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
906 PL_exitlist[PL_exitlistlen].fn = fn;
907 PL_exitlist[PL_exitlistlen].ptr = ptr;
908 ++PL_exitlistlen;
4b556e6c
JD		 909}
910
954c1994
GS		 911/*
912=for apidoc perl_parse
913
914Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
915
916=cut
917*/
918
79072805 919int
0cb96387 920perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 921{
6224f72b 922 I32 oldscope;
6224f72b 923 int ret;
db36c5a1 924 dJMPENV;
4d1ff10f 925#ifdef USE_5005THREADS
cea2e8a9
GS		 926 dTHX;
927#endif
8d063cd8 928
a687059c
LW		 929#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
930#ifdef IAMSUID
931#undef IAMSUID
cea2e8a9 932 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 933setuid perl scripts securely.\n");
934#endif
935#endif
936
3280af22 937 PL_origargc = argc;
bc0a45ed
DM		 938 {
939 /* we copy rather than point to argv
940 * since perl_clone will copy and perl_destruct
3a1ee7e8 941 * has no way of knowing if we've made a copy or
bc0a45ed
DM		 942 * just point to argv
943 */
944 int i = PL_origargc;
945 New(0, PL_origargv, i+1, char*);
946 PL_origargv[i] = '\0';
947 while (i-- > 0) {
948 PL_origargv[i] = savepv(argv[i]);
949 }
950 }
951
0631ea03 952
a0d0e21e 953
3280af22 954 if (PL_do_undump) {
a0d0e21e
LW		 955
956 /* Come here if running an undumped a.out. */
957
3280af22
NIS		 958 PL_origfilename = savepv(argv[0]);
959 PL_do_undump = FALSE;
a0d0e21e 960 cxstack_ix = -1; /* start label stack again */
748a9306 961 init_ids();
a0d0e21e
LW		 962 init_postdump_symbols(argc,argv,env);
963 return 0;
964 }
965
3280af22
NIS		 966 if (PL_main_root) {
967 PL_curpad = AvARRAY(PL_comppad);
968 op_free(PL_main_root);
969 PL_main_root = Nullop;
ff0cee69 970 }
3280af22
NIS		 971 PL_main_start = Nullop;
972 SvREFCNT_dec(PL_main_cv);
973 PL_main_cv = Nullcv;
79072805 974
3280af22
NIS		 975 time(&PL_basetime);
976 oldscope = PL_scopestack_ix;
599cee73 977 PL_dowarn = G_WARN_OFF;
f86702cc 978
14dd3ad8
GS		 979#ifdef PERL_FLEXIBLE_EXCEPTIONS
980 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
981#else
982 JMPENV_PUSH(ret);
983#endif
6224f72b 984 switch (ret) {
312caa8e 985 case 0:
14dd3ad8
GS		 986#ifndef PERL_FLEXIBLE_EXCEPTIONS
987 parse_body(env,xsinit);
988#endif
7d30b5c4
GS		 989 if (PL_checkav)
990 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 991 ret = 0;
992 break;
6224f72b
GS		 993 case 1:
994 STATUS_ALL_FAILURE;
995 /* FALL THROUGH */
996 case 2:
997 /* my_exit() was called */
3280af22 998 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 999 LEAVE;
1000 FREETMPS;
3280af22 1001 PL_curstash = PL_defstash;
7d30b5c4
GS		 1002 if (PL_checkav)
1003 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1004 ret = STATUS_NATIVE_EXPORT;
1005 break;
6224f72b 1006 case 3:
bf49b057 1007 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1008 ret = 1;
1009 break;
6224f72b 1010 }
14dd3ad8
GS		 1011 JMPENV_POP;
1012 return ret;
1013}
1014
1015#ifdef PERL_FLEXIBLE_EXCEPTIONS
1016STATIC void *
1017S_vparse_body(pTHX_ va_list args)
1018{
1019 char **env = va_arg(args, char**);
1020 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1021
1022 return parse_body(env, xsinit);
312caa8e 1023}
14dd3ad8 1024#endif
312caa8e
CS		 1025
1026STATIC void *
14dd3ad8 1027S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1028{
312caa8e
CS		 1029 int argc = PL_origargc;
1030 char **argv = PL_origargv;
312caa8e
CS		 1031 char *scriptname = NULL;
1032 int fdscript = -1;
1033 VOL bool dosearch = FALSE;
1034 char *validarg = "";
1035 AV* comppadlist;
1036 register SV *sv;
1037 register char *s;
cf756827 1038 char *cddir = Nullch;
312caa8e 1039
3280af22 1040 sv_setpvn(PL_linestr,"",0);
79cb57f6 1041 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1042 SAVEFREESV(sv);
1043 init_main_stash();
54310121 1044
6224f72b
GS		 1045 for (argc--,argv++; argc > 0; argc--,argv++) {
1046 if (argv[0][0] != '-' || !argv[0][1])
1047 break;
1048#ifdef DOSUID
1049 if (*validarg)
1050 validarg = " PHOOEY ";
1051 else
1052 validarg = argv[0];
13281fa4 1053#endif
6224f72b
GS		 1054 s = argv[0]+1;
1055 reswitch:
1056 switch (*s) {
729a02f2
GS		 1057 case 'C':
1058#ifdef WIN32
c0932edc 1059 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1060 /* FALL THROUGH */
1061#endif
1d5472a9
GS		 1062#ifndef PERL_STRICT_CR
1063 case '\r':
1064#endif
6224f72b
GS		 1065 case ' ':
1066 case '0':
1067 case 'F':
1068 case 'a':
1069 case 'c':
1070 case 'd':
1071 case 'D':
1072 case 'h':
1073 case 'i':
1074 case 'l':
1075 case 'M':
1076 case 'm':
1077 case 'n':
1078 case 'p':
1079 case 's':
1080 case 'u':
1081 case 'U':
1082 case 'v':
599cee73
PM		 1083 case 'W':
1084 case 'X':
6224f72b 1085 case 'w':
155aba94 1086 if ((s = moreswitches(s)))
6224f72b
GS		 1087 goto reswitch;
1088 break;
33b78306 1089
1dbad523 1090 case 't':
317ea90d
MS		 1091 if( !PL_tainting ) {
1092 PL_taint_warn = TRUE;
1093 PL_tainting = TRUE;
1094 }
1095 s++;
1096 goto reswitch;
6224f72b 1097 case 'T':
3280af22 1098 PL_tainting = TRUE;
317ea90d 1099 PL_taint_warn = FALSE;
6224f72b
GS		 1100 s++;
1101 goto reswitch;
f86702cc 1102
6224f72b 1103 case 'e':
bf4acbe4
GS		 1104#ifdef MACOS_TRADITIONAL
1105 /* ignore -e for Dev:Pseudo argument */
1106 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1107 break;
bf4acbe4 1108#endif
3280af22 1109 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1110 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1111 if (!PL_e_script) {
79cb57f6 1112 PL_e_script = newSVpvn("",0);
0cb96387 1113 filter_add(read_e_script, NULL);
6224f72b
GS		 1114 }
1115 if (*++s)
3280af22 1116 sv_catpv(PL_e_script, s);
6224f72b 1117 else if (argv[1]) {
3280af22 1118 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1119 argc--,argv++;
1120 }
1121 else
cea2e8a9 1122 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1123 sv_catpv(PL_e_script, "\n");
6224f72b 1124 break;
afe37c7d 1125
6224f72b
GS		 1126 case 'I': /* -I handled both here and in moreswitches() */
1127 forbid_setid("-I");
1128 if (!*++s && (s=argv[1]) != Nullch) {
1129 argc--,argv++;
1130 }
6224f72b 1131 if (s && *s) {
0df16ed7
GS		 1132 char *p;
1133 STRLEN len = strlen(s);
1134 p = savepvn(s, len);
9c8a64f0 1135 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1136 sv_catpvn(sv, "-I", 2);
1137 sv_catpvn(sv, p, len);
1138 sv_catpvn(sv, " ", 1);
6224f72b 1139 Safefree(p);
0df16ed7
GS		 1140 }
1141 else
a67e862a 1142 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1143 break;
1144 case 'P':
1145 forbid_setid("-P");
3280af22 1146 PL_preprocess = TRUE;
6224f72b
GS		 1147 s++;
1148 goto reswitch;
1149 case 'S':
1150 forbid_setid("-S");
1151 dosearch = TRUE;
1152 s++;
1153 goto reswitch;
1154 case 'V':
3280af22
NIS		 1155 if (!PL_preambleav)
1156 PL_preambleav = newAV();
1157 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1158 if (*++s != ':') {
3280af22 1159 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1160#ifdef VMS
6b88bc9c 1161 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1162#else
3280af22 1163 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1164#endif
3280af22 1165 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1166# ifdef DEBUGGING
3280af22 1167 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1168# endif
6224f72b 1169# ifdef MULTIPLICITY
8f872242 1170 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1171# endif
4d1ff10f
AB		 1172# ifdef USE_5005THREADS
1173 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1174# endif
ac5e8965
JH		 1175# ifdef USE_ITHREADS
1176 sv_catpv(PL_Sv," USE_ITHREADS");
1177# endif
10cc9d2a
JH		 1178# ifdef USE_64_BIT_INT
1179 sv_catpv(PL_Sv," USE_64_BIT_INT");
1180# endif
1181# ifdef USE_64_BIT_ALL
1182 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1183# endif
1184# ifdef USE_LONG_DOUBLE
1185 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1186# endif
53430762
JH		 1187# ifdef USE_LARGE_FILES
1188 sv_catpv(PL_Sv," USE_LARGE_FILES");
1189# endif
ac5e8965
JH		 1190# ifdef USE_SOCKS
1191 sv_catpv(PL_Sv," USE_SOCKS");
1192# endif
b363f7ed
GS		 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
cf756827 1273 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1274 {
cf756827 1275 char *popt = s;
74288ac8
GS		 1276 while (isSPACE(*s))
1277 s++;
317ea90d 1278 if (*s == '-' && *(s+1) == 'T') {
74288ac8 1279 PL_tainting = TRUE;
317ea90d
MS		 1280 PL_taint_warn = FALSE;
1281 }
74288ac8 1282 else {
cf756827 1283 char *popt_copy = Nullch;
74288ac8 1284 while (s && *s) {
4ea8f8fb 1285 char *d;
74288ac8
GS		 1286 while (isSPACE(*s))
1287 s++;
1288 if (*s == '-') {
1289 s++;
1290 if (isSPACE(*s))
1291 continue;
1292 }
4ea8f8fb 1293 d = s;
74288ac8
GS		 1294 if (!*s)
1295 break;
1c4db469 1296 if (!strchr("DIMUdmtw", *s))
cea2e8a9 1297 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1298 while (++s && *s) {
1299 if (isSPACE(*s)) {
cf756827
GS		 1300 if (!popt_copy) {
1301 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1302 s = popt_copy + (s - popt);
1303 d = popt_copy + (d - popt);
1304 }
4ea8f8fb
MS		 1305 *s++ = '\0';
1306 break;
1307 }
1308 }
1c4db469 1309 if (*d == 't') {
317ea90d
MS		 1310 if( !PL_tainting ) {
1311 PL_taint_warn = TRUE;
1312 PL_tainting = TRUE;
1313 }
1c4db469
RGS		 1314 } else {
1315 moreswitches(d);
1316 }
6224f72b 1317 }
6224f72b
GS		 1318 }
1319 }
a0d0e21e 1320
317ea90d
MS		 1321 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1322 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1323 }
1324
6224f72b
GS		 1325 if (!scriptname)
1326 scriptname = argv[0];
3280af22 1327 if (PL_e_script) {
6224f72b
GS		 1328 argc++,argv--;
1329 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1330 }
1331 else if (scriptname == Nullch) {
1332#ifdef MSDOS
1333 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1334 moreswitches("h");
1335#endif
1336 scriptname = "-";
1337 }
1338
1339 init_perllib();
1340
1341 open_script(scriptname,dosearch,sv,&fdscript);
1342
1343 validate_suid(validarg, scriptname,fdscript);
1344
64ca3a65 1345#ifndef PERL_MICRO
0b5b802d
GS		 1346#if defined(SIGCHLD) || defined(SIGCLD)
1347 {
1348#ifndef SIGCHLD
1349# define SIGCHLD SIGCLD
1350#endif
1351 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1352 if (sigstate == SIG_IGN) {
1353 if (ckWARN(WARN_SIGNAL))
1354 Perl_warner(aTHX_ WARN_SIGNAL,
1355 "Can't ignore signal CHLD, forcing to default");
1356 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1357 }
1358 }
1359#endif
64ca3a65 1360#endif
0b5b802d 1361
bf4acbe4
GS		 1362#ifdef MACOS_TRADITIONAL
1363 if (PL_doextract || gMacPerl_AlwaysExtract) {
1364#else
f4c556ac 1365 if (PL_doextract) {
bf4acbe4 1366#endif
6224f72b 1367 find_beginning();
f4c556ac
GS		 1368 if (cddir && PerlDir_chdir(cddir) < 0)
1369 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1370
1371 }
6224f72b 1372
3280af22
NIS		 1373 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1374 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1375 CvUNIQUE_on(PL_compcv);
1376
1377 PL_comppad = newAV();
1378 av_push(PL_comppad, Nullsv);
1379 PL_curpad = AvARRAY(PL_comppad);
1380 PL_comppad_name = newAV();
1381 PL_comppad_name_fill = 0;
1382 PL_min_intro_pending = 0;
1383 PL_padix = 0;
4d1ff10f 1384#ifdef USE_5005THREADS
79cb57f6 1385 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1386 PL_curpad[0] = (SV*)newAV();
1387 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1388 CvOWNER(PL_compcv) = 0;
1389 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1390 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1391#endif /* USE_5005THREADS */
6224f72b
GS		 1392
1393 comppadlist = newAV();
1394 AvREAL_off(comppadlist);
3280af22
NIS		 1395 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1396 av_store(comppadlist, 1, (SV*)PL_comppad);
1397 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1398
0c4f7ff0 1399 boot_core_PerlIO();
6224f72b 1400 boot_core_UNIVERSAL();
9a34ef1d 1401#ifndef PERL_MICRO
09bef843 1402 boot_core_xsutils();
9a34ef1d 1403#endif
6224f72b
GS		 1404
1405 if (xsinit)
acfe0abc 1406 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1407#ifndef PERL_MICRO
ed79a026 1408#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1409 init_os_extras();
6224f72b 1410#endif
64ca3a65 1411#endif
6224f72b 1412
29209bc5 1413#ifdef USE_SOCKS
1b9c9cf5
DH		 1414# ifdef HAS_SOCKS5_INIT
1415 socks5_init(argv[0]);
1416# else
29209bc5 1417 SOCKSinit(argv[0]);
1b9c9cf5 1418# endif
ac27b0f5 1419#endif
29209bc5 1420
6224f72b
GS		 1421 init_predump_symbols();
1422 /* init_postdump_symbols not currently designed to be called */
1423 /* more than once (ENV isn't cleared first, for example) */
1424 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1425 if (!PL_do_undump)
6224f72b
GS		 1426 init_postdump_symbols(argc,argv,env);
1427
1428 init_lexer();
1429
1430 /* now parse the script */
1431
91487cfc 1432 SETERRNO(0,SS$_NORMAL);
3280af22 1433 PL_error_count = 0;
bf4acbe4
GS		 1434#ifdef MACOS_TRADITIONAL
1435 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1436 if (PL_minus_c)
1437 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1438 else {
1439 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1440 MacPerl_MPWFileName(PL_origfilename));
1441 }
1442 }
1443#else
3280af22
NIS		 1444 if (yyparse() || PL_error_count) {
1445 if (PL_minus_c)
cea2e8a9 1446 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1447 else {
cea2e8a9 1448 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1449 PL_origfilename);
6224f72b
GS		 1450 }
1451 }
bf4acbe4 1452#endif
57843af0 1453 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1454 PL_curstash = PL_defstash;
1455 PL_preprocess = FALSE;
1456 if (PL_e_script) {
1457 SvREFCNT_dec(PL_e_script);
1458 PL_e_script = Nullsv;
6224f72b
GS		 1459 }
1460
8bfdd7d9
HS		 1461/*
1462 Not sure that this is still the right place to do this now that we
1463 no longer use PL_nrs. HVDS 2001/09/09
1464*/
864dbfa3 1465 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1466
3280af22 1467 if (PL_do_undump)
6224f72b
GS		 1468 my_unexec();
1469
57843af0
GS		 1470 if (isWARN_ONCE) {
1471 SAVECOPFILE(PL_curcop);
1472 SAVECOPLINE(PL_curcop);
3280af22 1473 gv_check(PL_defstash);
57843af0 1474 }
6224f72b
GS		 1475
1476 LEAVE;
1477 FREETMPS;
1478
1479#ifdef MYMALLOC
1480 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1481 dump_mstats("after compilation:");
1482#endif
1483
1484 ENTER;
3280af22 1485 PL_restartop = 0;
312caa8e 1486 return NULL;
6224f72b
GS		 1487}
1488
954c1994
GS		 1489/*
1490=for apidoc perl_run
1491
1492Tells a Perl interpreter to run. See L<perlembed>.
1493
1494=cut
1495*/
1496
6224f72b 1497int
0cb96387 1498perl_run(pTHXx)
6224f72b 1499{
6224f72b 1500 I32 oldscope;
14dd3ad8 1501 int ret = 0;
db36c5a1 1502 dJMPENV;
4d1ff10f 1503#ifdef USE_5005THREADS
cea2e8a9
GS		 1504 dTHX;
1505#endif
6224f72b 1506
3280af22 1507 oldscope = PL_scopestack_ix;
96e176bf
CL		 1508#ifdef VMS
1509 VMSISH_HUSHED = 0;
1510#endif
6224f72b 1511
14dd3ad8 1512#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1513 redo_body:
14dd3ad8
GS		 1514 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1515#else
1516 JMPENV_PUSH(ret);
1517#endif
6224f72b
GS		 1518 switch (ret) {
1519 case 1:
1520 cxstack_ix = -1; /* start context stack again */
312caa8e 1521 goto redo_body;
14dd3ad8
GS		 1522 case 0: /* normal completion */
1523#ifndef PERL_FLEXIBLE_EXCEPTIONS
1524 redo_body:
1525 run_body(oldscope);
1526#endif
1527 /* FALL THROUGH */
1528 case 2: /* my_exit() */
3280af22 1529 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1530 LEAVE;
1531 FREETMPS;
3280af22 1532 PL_curstash = PL_defstash;
3a1ee7e8 1533 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB		 1534 PL_endav && !PL_minus_c)
1535 call_list(oldscope, PL_endav);
6224f72b
GS		 1536#ifdef MYMALLOC
1537 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1538 dump_mstats("after execution: ");
1539#endif
14dd3ad8
GS		 1540 ret = STATUS_NATIVE_EXPORT;
1541 break;
6224f72b 1542 case 3:
312caa8e
CS		 1543 if (PL_restartop) {
1544 POPSTACK_TO(PL_mainstack);
1545 goto redo_body;
6224f72b 1546 }
bf49b057 1547 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1548 FREETMPS;
14dd3ad8
GS		 1549 ret = 1;
1550 break;
6224f72b
GS		 1551 }
1552
14dd3ad8
GS		 1553 JMPENV_POP;
1554 return ret;
312caa8e
CS		 1555}
1556
14dd3ad8 1557#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1558STATIC void *
14dd3ad8 1559S_vrun_body(pTHX_ va_list args)
312caa8e 1560{
312caa8e
CS		 1561 I32 oldscope = va_arg(args, I32);
1562
14dd3ad8
GS		 1563 return run_body(oldscope);
1564}
1565#endif
1566
1567
1568STATIC void *
1569S_run_body(pTHX_ I32 oldscope)
1570{
6224f72b 1571 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1572 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1573
3280af22 1574 if (!PL_restartop) {
6224f72b
GS		 1575 DEBUG_x(dump_all());
1576 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1577 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1578 PTR2UV(thr)));
6224f72b 1579
3280af22 1580 if (PL_minus_c) {
bf4acbe4 1581#ifdef MACOS_TRADITIONAL
be708cc0 1582 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1583#else
bf49b057 1584 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1585#endif
6224f72b
GS		 1586 my_exit(0);
1587 }
3280af22 1588 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1589 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1590 if (PL_initav)
1591 call_list(oldscope, PL_initav);
6224f72b
GS		 1592 }
1593
1594 /* do it */
1595
3280af22 1596 if (PL_restartop) {
533c011a 1597 PL_op = PL_restartop;
3280af22 1598 PL_restartop = 0;
cea2e8a9 1599 CALLRUNOPS(aTHX);
6224f72b 1600 }
3280af22
NIS		 1601 else if (PL_main_start) {
1602 CvDEPTH(PL_main_cv) = 1;
533c011a 1603 PL_op = PL_main_start;
cea2e8a9 1604 CALLRUNOPS(aTHX);
6224f72b
GS		 1605 }
1606
f6b3007c
JH		 1607 my_exit(0);
1608 /* NOTREACHED */
312caa8e 1609 return NULL;
6224f72b
GS		 1610}
1611
954c1994 1612/*
ccfc67b7
JH		 1613=head1 SV Manipulation Functions
1614
954c1994
GS		 1615=for apidoc p||get_sv
1616
1617Returns the SV of the specified Perl scalar. If C<create> is set and the
1618Perl variable does not exist then it will be created. If C<create> is not
1619set and the variable does not exist then NULL is returned.
1620
1621=cut
1622*/
1623
6224f72b 1624SV*
864dbfa3 1625Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1626{
1627 GV *gv;
4d1ff10f 1628#ifdef USE_5005THREADS
6224f72b
GS		 1629 if (name[1] == '\0' && !isALPHA(name[0])) {
1630 PADOFFSET tmp = find_threadsv(name);
411caa50 1631 if (tmp != NOT_IN_PAD)
6224f72b 1632 return THREADSV(tmp);
6224f72b 1633 }
4d1ff10f 1634#endif /* USE_5005THREADS */
6224f72b
GS		 1635 gv = gv_fetchpv(name, create, SVt_PV);
1636 if (gv)
1637 return GvSV(gv);
1638 return Nullsv;
1639}
1640
954c1994 1641/*
ccfc67b7
JH		 1642=head1 Array Manipulation Functions
1643
954c1994
GS		 1644=for apidoc p||get_av
1645
1646Returns the AV of the specified Perl array. If C<create> is set and the
1647Perl variable does not exist then it will be created. If C<create> is not
1648set and the variable does not exist then NULL is returned.
1649
1650=cut
1651*/
1652
6224f72b 1653AV*
864dbfa3 1654Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1655{
1656 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1657 if (create)
1658 return GvAVn(gv);
1659 if (gv)
1660 return GvAV(gv);
1661 return Nullav;
1662}
1663
954c1994 1664/*
ccfc67b7
JH		 1665=head1 Hash Manipulation Functions
1666
954c1994
GS		 1667=for apidoc p||get_hv
1668
1669Returns the HV of the specified Perl hash. If C<create> is set and the
1670Perl variable does not exist then it will be created. If C<create> is not
1671set and the variable does not exist then NULL is returned.
1672
1673=cut
1674*/
1675
6224f72b 1676HV*
864dbfa3 1677Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1678{
a0d0e21e
LW		 1679 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1680 if (create)
1681 return GvHVn(gv);
1682 if (gv)
1683 return GvHV(gv);
1684 return Nullhv;
1685}
1686
954c1994 1687/*
ccfc67b7
JH		 1688=head1 CV Manipulation Functions
1689
954c1994
GS		 1690=for apidoc p||get_cv
1691
1692Returns the CV of the specified Perl subroutine. If C<create> is set and
1693the Perl subroutine does not exist then it will be declared (which has the
1694same effect as saying C<sub name;>). If C<create> is not set and the
1695subroutine does not exist then NULL is returned.
1696
1697=cut
1698*/
1699
a0d0e21e 1700CV*
864dbfa3 1701Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1702{
1703 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1704 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1705 /* XXX this is probably not what they think they're getting.
1706 * It has the same effect as "sub name;", i.e. just a forward
1707 * declaration! */
8ebc5c01 1708 if (create && !GvCVu(gv))
774d564b 1709 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1710 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1711 Nullop,
a0d0e21e
LW		 1712 Nullop);
1713 if (gv)
8ebc5c01 1714 return GvCVu(gv);
a0d0e21e
LW		 1715 return Nullcv;
1716}
1717
79072805
LW		 1718/* Be sure to refetch the stack pointer after calling these routines. */
1719
954c1994 1720/*
ccfc67b7
JH		 1721
1722=head1 Callback Functions
1723
954c1994
GS		 1724=for apidoc p||call_argv
1725
1726Performs a callback to the specified Perl sub. See L<perlcall>.
1727
1728=cut
1729*/
1730
a0d0e21e 1731I32
864dbfa3 1732Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1733
8ac85365
NIS		 1734 /* See G_* flags in cop.h */
1735 /* null terminated arg list */
8990e307 1736{
a0d0e21e 1737 dSP;
8990e307 1738
924508f0 1739 PUSHMARK(SP);
a0d0e21e 1740 if (argv) {
8990e307 1741 while (*argv) {
a0d0e21e 1742 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1743 argv++;
1744 }
a0d0e21e 1745 PUTBACK;
8990e307 1746 }
864dbfa3 1747 return call_pv(sub_name, flags);
8990e307
LW		 1748}
1749
954c1994
GS		 1750/*
1751=for apidoc p||call_pv
1752
1753Performs a callback to the specified Perl sub. See L<perlcall>.
1754
1755=cut
1756*/
1757
a0d0e21e 1758I32
864dbfa3 1759Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1760 /* name of the subroutine */
1761 /* See G_* flags in cop.h */
a0d0e21e 1762{
864dbfa3 1763 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1764}
1765
954c1994
GS		 1766/*
1767=for apidoc p||call_method
1768
1769Performs a callback to the specified Perl method. The blessed object must
1770be on the stack. See L<perlcall>.
1771
1772=cut
1773*/
1774
a0d0e21e 1775I32
864dbfa3 1776Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1777 /* name of the subroutine */
1778 /* See G_* flags in cop.h */
a0d0e21e 1779{
968b3946 1780 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1781}
1782
1783/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1784/*
1785=for apidoc p||call_sv
1786
1787Performs a callback to the Perl sub whose name is in the SV. See
1788L<perlcall>.
1789
1790=cut
1791*/
1792
a0d0e21e 1793I32
864dbfa3 1794Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1795 /* See G_* flags in cop.h */
a0d0e21e 1796{
924508f0 1797 dSP;
a0d0e21e 1798 LOGOP myop; /* fake syntax tree node */
968b3946 1799 UNOP method_op;
aa689395 1800 I32 oldmark;
13689cfe 1801 volatile I32 retval = 0;
a0d0e21e 1802 I32 oldscope;
54310121 1803 bool oldcatch = CATCH_GET;
6224f72b 1804 int ret;
533c011a 1805 OP* oldop = PL_op;
db36c5a1 1806 dJMPENV;
1e422769 1807
a0d0e21e
LW		 1808 if (flags & G_DISCARD) {
1809 ENTER;
1810 SAVETMPS;
1811 }
1812
aa689395 1813 Zero(&myop, 1, LOGOP);
54310121 1814 myop.op_next = Nullop;
f51d4af5 1815 if (!(flags & G_NOARGS))
aa689395 1816 myop.op_flags |= OPf_STACKED;
54310121 1817 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1818 (flags & G_ARRAY) ? OPf_WANT_LIST :
1819 OPf_WANT_SCALAR);
462e5cf6 1820 SAVEOP();
533c011a 1821 PL_op = (OP*)&myop;
aa689395 1822
3280af22
NIS		 1823 EXTEND(PL_stack_sp, 1);
1824 *++PL_stack_sp = sv;
aa689395 1825 oldmark = TOPMARK;
3280af22 1826 oldscope = PL_scopestack_ix;
a0d0e21e 1827
3280af22 1828 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1829 /* Handle first BEGIN of -d. */
3280af22 1830 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1831 /* Try harder, since this may have been a sighandler, thus
1832 * curstash may be meaningless. */
3280af22 1833 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1834 && !(flags & G_NODEBUG))
533c011a 1835 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1836
968b3946
GS		 1837 if (flags & G_METHOD) {
1838 Zero(&method_op, 1, UNOP);
1839 method_op.op_next = PL_op;
1840 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1841 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1842 PL_op = (OP*)&method_op;
968b3946
GS		 1843 }
1844
312caa8e 1845 if (!(flags & G_EVAL)) {
0cdb2077 1846 CATCH_SET(TRUE);
14dd3ad8 1847 call_body((OP*)&myop, FALSE);
312caa8e 1848 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1849 CATCH_SET(oldcatch);
312caa8e
CS		 1850 }
1851 else {
d78bda3d 1852 myop.op_other = (OP*)&myop;
3280af22 1853 PL_markstack_ptr--;
4633a7c4
LW		 1854 /* we're trying to emulate pp_entertry() here */
1855 {
c09156bb 1856 register PERL_CONTEXT *cx;
54310121 1857 I32 gimme = GIMME_V;
ac27b0f5 1858
4633a7c4
LW		 1859 ENTER;
1860 SAVETMPS;
ac27b0f5 1861
968b3946 1862 push_return(Nullop);
1d76a5c3 1863 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1864 PUSHEVAL(cx, 0, 0);
533c011a 1865 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1866
faef0170 1867 PL_in_eval = EVAL_INEVAL;
4633a7c4 1868 if (flags & G_KEEPERR)
faef0170 1869 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1870 else
38a03e6e 1871 sv_setpv(ERRSV,"");
4633a7c4 1872 }
3280af22 1873 PL_markstack_ptr++;
a0d0e21e 1874
14dd3ad8
GS		 1875#ifdef PERL_FLEXIBLE_EXCEPTIONS
1876 redo_body:
1877 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1878 (OP*)&myop, FALSE);
14dd3ad8
GS		 1879#else
1880 JMPENV_PUSH(ret);
1881#endif
6224f72b
GS		 1882 switch (ret) {
1883 case 0:
14dd3ad8
GS		 1884#ifndef PERL_FLEXIBLE_EXCEPTIONS
1885 redo_body:
1886 call_body((OP*)&myop, FALSE);
1887#endif
312caa8e
CS		 1888 retval = PL_stack_sp - (PL_stack_base + oldmark);
1889 if (!(flags & G_KEEPERR))
1890 sv_setpv(ERRSV,"");
a0d0e21e 1891 break;
6224f72b 1892 case 1:
f86702cc 1893 STATUS_ALL_FAILURE;
a0d0e21e 1894 /* FALL THROUGH */
6224f72b 1895 case 2:
a0d0e21e 1896 /* my_exit() was called */
3280af22 1897 PL_curstash = PL_defstash;
a0d0e21e 1898 FREETMPS;
14dd3ad8 1899 JMPENV_POP;
cc3604b1 1900 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1901 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1902 my_exit_jump();
a0d0e21e 1903 /* NOTREACHED */
6224f72b 1904 case 3:
3280af22 1905 if (PL_restartop) {
533c011a 1906 PL_op = PL_restartop;
3280af22 1907 PL_restartop = 0;
312caa8e 1908 goto redo_body;
a0d0e21e 1909 }
3280af22 1910 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1911 if (flags & G_ARRAY)
1912 retval = 0;
1913 else {
1914 retval = 1;
3280af22 1915 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1916 }
312caa8e 1917 break;
a0d0e21e 1918 }
a0d0e21e 1919
3280af22 1920 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1921 SV **newsp;
1922 PMOP *newpm;
1923 I32 gimme;
c09156bb 1924 register PERL_CONTEXT *cx;
a0a2876f
LW		 1925 I32 optype;
1926
1927 POPBLOCK(cx,newpm);
1928 POPEVAL(cx);
1929 pop_return();
3280af22 1930 PL_curpm = newpm;
a0a2876f 1931 LEAVE;
a0d0e21e 1932 }
14dd3ad8 1933 JMPENV_POP;
a0d0e21e 1934 }
1e422769 1935
a0d0e21e 1936 if (flags & G_DISCARD) {
3280af22 1937 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1938 retval = 0;
1939 FREETMPS;
1940 LEAVE;
1941 }
533c011a 1942 PL_op = oldop;
a0d0e21e
LW		 1943 return retval;
1944}
1945
14dd3ad8 1946#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1947STATIC void *
14dd3ad8 1948S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1949{
1950 OP *myop = va_arg(args, OP*);
1951 int is_eval = va_arg(args, int);
1952
14dd3ad8 1953 call_body(myop, is_eval);
312caa8e
CS		 1954 return NULL;
1955}
14dd3ad8 1956#endif
312caa8e
CS		 1957
1958STATIC void
14dd3ad8 1959S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1960{
312caa8e
CS		 1961 if (PL_op == myop) {
1962 if (is_eval)
f807eda9 1963 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1964 else
f807eda9 1965 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1966 }
1967 if (PL_op)
cea2e8a9 1968 CALLRUNOPS(aTHX);
312caa8e
CS		 1969}
1970
6e72f9df 1971/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1972
954c1994
GS		 1973/*
1974=for apidoc p||eval_sv
1975
1976Tells Perl to C<eval> the string in the SV.
1977
1978=cut
1979*/
1980
a0d0e21e 1981I32
864dbfa3 1982Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1983
8ac85365 1984 /* See G_* flags in cop.h */
a0d0e21e 1985{
924508f0 1986 dSP;
a0d0e21e 1987 UNOP myop; /* fake syntax tree node */
8fa7f367 1988 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1989 volatile I32 retval = 0;
4633a7c4 1990 I32 oldscope;
6224f72b 1991 int ret;
533c011a 1992 OP* oldop = PL_op;
db36c5a1 1993 dJMPENV;
84902520 1994
4633a7c4
LW		 1995 if (flags & G_DISCARD) {
1996 ENTER;
1997 SAVETMPS;
1998 }
1999
462e5cf6 2000 SAVEOP();
533c011a
NIS		 2001 PL_op = (OP*)&myop;
2002 Zero(PL_op, 1, UNOP);
3280af22
NIS		 2003 EXTEND(PL_stack_sp, 1);
2004 *++PL_stack_sp = sv;
2005 oldscope = PL_scopestack_ix;
79072805 2006
4633a7c4
LW		 2007 if (!(flags & G_NOARGS))
2008 myop.op_flags = OPf_STACKED;
79072805 2009 myop.op_next = Nullop;
6e72f9df 2010 myop.op_type = OP_ENTEREVAL;
54310121 2011 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2012 (flags & G_ARRAY) ? OPf_WANT_LIST :
2013 OPf_WANT_SCALAR);
6e72f9df 2014 if (flags & G_KEEPERR)
2015 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2016
14dd3ad8 2017#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 2018 redo_body:
14dd3ad8 2019 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 2020 (OP*)&myop, TRUE);
14dd3ad8
GS		 2021#else
2022 JMPENV_PUSH(ret);
2023#endif
6224f72b
GS		 2024 switch (ret) {
2025 case 0:
14dd3ad8
GS		 2026#ifndef PERL_FLEXIBLE_EXCEPTIONS
2027 redo_body:
2028 call_body((OP*)&myop,TRUE);
2029#endif
312caa8e
CS		 2030 retval = PL_stack_sp - (PL_stack_base + oldmark);
2031 if (!(flags & G_KEEPERR))
2032 sv_setpv(ERRSV,"");
4633a7c4 2033 break;
6224f72b 2034 case 1:
f86702cc 2035 STATUS_ALL_FAILURE;
4633a7c4 2036 /* FALL THROUGH */
6224f72b 2037 case 2:
4633a7c4 2038 /* my_exit() was called */
3280af22 2039 PL_curstash = PL_defstash;
4633a7c4 2040 FREETMPS;
14dd3ad8 2041 JMPENV_POP;
cc3604b1 2042 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2043 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2044 my_exit_jump();
4633a7c4 2045 /* NOTREACHED */
6224f72b 2046 case 3:
3280af22 2047 if (PL_restartop) {
533c011a 2048 PL_op = PL_restartop;
3280af22 2049 PL_restartop = 0;
312caa8e 2050 goto redo_body;
4633a7c4 2051 }
3280af22 2052 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2053 if (flags & G_ARRAY)
2054 retval = 0;
2055 else {
2056 retval = 1;
3280af22 2057 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2058 }
312caa8e 2059 break;
4633a7c4
LW		 2060 }
2061
14dd3ad8 2062 JMPENV_POP;
4633a7c4 2063 if (flags & G_DISCARD) {
3280af22 2064 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2065 retval = 0;
2066 FREETMPS;
2067 LEAVE;
2068 }
533c011a 2069 PL_op = oldop;
4633a7c4
LW		 2070 return retval;
2071}
2072
954c1994
GS		 2073/*
2074=for apidoc p||eval_pv
2075
2076Tells Perl to C<eval> the given string and return an SV* result.
2077
2078=cut
2079*/
2080
137443ea 2081SV*
864dbfa3 2082Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2083{
2084 dSP;
2085 SV* sv = newSVpv(p, 0);
2086
864dbfa3 2087 eval_sv(sv, G_SCALAR);
137443ea 2088 SvREFCNT_dec(sv);
2089
2090 SPAGAIN;
2091 sv = POPs;
2092 PUTBACK;
2093
2d8e6c8d
GS		 2094 if (croak_on_error && SvTRUE(ERRSV)) {
2095 STRLEN n_a;
cea2e8a9 2096 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2097 }
137443ea 2098
2099 return sv;
2100}
2101
4633a7c4
LW		 2102/* Require a module. */
2103
954c1994 2104/*
ccfc67b7
JH		 2105=head1 Embedding Functions
2106
954c1994
GS		 2107=for apidoc p||require_pv
2108
7d3fb230
BS		 2109Tells Perl to C<require> the file named by the string argument. It is
2110analogous to the Perl code C<eval "require '$file'">. It's even
2111implemented that way; consider using Perl_load_module instead.
954c1994 2112
7d3fb230 2113=cut */
954c1994 2114
4633a7c4 2115void
864dbfa3 2116Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2117{
d3acc0f7
JP		 2118 SV* sv;
2119 dSP;
e788e7d3 2120 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2121 PUTBACK;
2122 sv = sv_newmortal();
4633a7c4
LW		 2123 sv_setpv(sv, "require '");
2124 sv_catpv(sv, pv);
2125 sv_catpv(sv, "'");
864dbfa3 2126 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2127 SPAGAIN;
2128 POPSTACK;
79072805
LW		 2129}
2130
79072805 2131void
864dbfa3 2132Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2133{
2134 register GV *gv;
2135
155aba94 2136 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2137 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2138}
2139
76e3520e 2140STATIC void
cea2e8a9 2141S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2142{
ab821d7f 2143 /* This message really ought to be max 23 lines.
75c72d73 2144 * Removed -h because the user already knows that option. Others? */
fb73857a 2145
76e3520e 2146 static char *usage_msg[] = {
fb73857a 2147"-0[octal] specify record separator (\\0, if no argument)",
2148"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2149"-C enable native wide character system interfaces",
1950ee41 2150"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2151"-d[:debugger] run program under debugger",
2152"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2153"-e 'command' one line of program (several -e's allowed, omit programfile)",
2154"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2155"-i[extension] edit <> files in place (makes backup if extension supplied)",
2156"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2157"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2158"-[mM][-]module execute `use/no module...' before executing program",
2159"-n assume 'while (<>) { ... }' loop around program",
2160"-p assume loop like -n but print line also, like sed",
2161"-P run program through C preprocessor before compilation",
2162"-s enable rudimentary parsing for switches after programfile",
2163"-S look for programfile using PATH environment variable",
2164"-T enable tainting checks",
2165"-u dump core after parsing program",
fb73857a 2166"-U allow unsafe operations",
aac3bd0d
GS		 2167"-v print version, subversion (includes VERY IMPORTANT perl info)",
2168"-V[:variable] print configuration summary (or a single Config.pm variable)",
2169"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2170"-W enable all warnings",
2171"-X disable all warnings",
fb73857a 2172"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2173"\n",
2174NULL
2175};
76e3520e 2176 char **p = usage_msg;
fb73857a 2177
b0e47665
GS		 2178 PerlIO_printf(PerlIO_stdout(),
2179 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2180 name);
fb73857a 2181 while (*p)
b0e47665 2182 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2183}
2184
79072805
LW		 2185/* This routine handles any switches that can be given during run */
2186
2187char *
864dbfa3 2188Perl_moreswitches(pTHX_ char *s)
79072805 2189{
ba210ebe 2190 STRLEN numlen;
c07a80fd 2191 U32 rschar;
79072805
LW		 2192
2193 switch (*s) {
2194 case '0':
a863c7d1 2195 {
53305cf1
NC		 2196 I32 flags = 0;
2197 numlen = 4;
2198 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2199 SvREFCNT_dec(PL_rs);
c07a80fd 2200 if (rschar & ~((U8)~0))
8bfdd7d9 2201 PL_rs = &PL_sv_undef;
c07a80fd 2202 else if (!rschar && numlen >= 2)
8bfdd7d9 2203 PL_rs = newSVpvn("", 0);
c07a80fd 2204 else {
2205 char ch = rschar;
8bfdd7d9 2206 PL_rs = newSVpvn(&ch, 1);
79072805
LW		 2207 }
2208 return s + numlen;
a863c7d1 2209 }
46487f74
GS		 2210 case 'C':
2211 PL_widesyscalls = TRUE;
2212 s++;
2213 return s;
2304df62 2214 case 'F':
3280af22 2215 PL_minus_F = TRUE;
ebce5377
RGS		 2216 PL_splitstr = ++s;
2217 while (*s && !isSPACE(*s)) ++s;
2218 *s = '\0';
2219 PL_splitstr = savepv(PL_splitstr);
2304df62 2220 return s;
79072805 2221 case 'a':
3280af22 2222 PL_minus_a = TRUE;
79072805
LW		 2223 s++;
2224 return s;
2225 case 'c':
3280af22 2226 PL_minus_c = TRUE;
79072805
LW		 2227 s++;
2228 return s;
2229 case 'd':
bbce6d69 2230 forbid_setid("-d");
4633a7c4 2231 s++;
70c94a19
RR		 2232 /* The following permits -d:Mod to accepts arguments following an =
2233 in the fashion that -MSome::Mod does. */
2234 if (*s == ':' || *s == '=') {
2235 char *start;
2236 SV *sv;
2237 sv = newSVpv("use Devel::", 0);
2238 start = ++s;
2239 /* We now allow -d:Module=Foo,Bar */
2240 while(isALNUM(*s) || *s==':') ++s;
2241 if (*s != '=')
2242 sv_catpv(sv, start);
2243 else {
2244 sv_catpvn(sv, start, s-start);
2245 sv_catpv(sv, " split(/,/,q{");
2246 sv_catpv(sv, ++s);
2247 sv_catpv(sv, "})");
2248 }
4633a7c4 2249 s += strlen(s);
70c94a19 2250 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2251 }
ed094faf 2252 if (!PL_perldb) {
3280af22 2253 PL_perldb = PERLDB_ALL;
a0d0e21e 2254 init_debugger();
ed094faf 2255 }
79072805
LW		 2256 return s;
2257 case 'D':
0453d815 2258 {
79072805 2259#ifdef DEBUGGING
bbce6d69 2260 forbid_setid("-D");
79072805 2261 if (isALPHA(s[1])) {
04932ac8 2262 /* if adding extra options, remember to update DEBUG_MASK */
1045810a 2263 static char debopts[] = "psltocPmfrxuLHXDSTRJ";
79072805
LW		 2264 char *d;
2265
93a17b20 2266 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2267 PL_debug |= 1 << (d - debopts);
79072805
LW		 2268 }
2269 else {
3280af22 2270 PL_debug = atoi(s+1);
79072805
LW		 2271 for (s++; isDIGIT(*s); s++) ;
2272 }
aea4f609 2273 PL_debug |= DEBUG_TOP_FLAG;
79072805 2274#else
0453d815
PM		 2275 if (ckWARN_d(WARN_DEBUGGING))
2276 Perl_warner(aTHX_ WARN_DEBUGGING,
2277 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2278 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2279#endif
2280 /*SUPPRESS 530*/
2281 return s;
0453d815 2282 }
4633a7c4 2283 case 'h':
ac27b0f5 2284 usage(PL_origargv[0]);
6ad3d225 2285 PerlProc_exit(0);
79072805 2286 case 'i':
3280af22
NIS		 2287 if (PL_inplace)
2288 Safefree(PL_inplace);
2289 PL_inplace = savepv(s+1);
79072805 2290 /*SUPPRESS 530*/
3280af22 2291 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2292 if (*s) {
fb73857a 2293 *s++ = '\0';
7b8d334a
GS		 2294 if (*s == '-') /* Additional switches on #! line. */
2295 s++;
2296 }
fb73857a 2297 return s;
4e49a025 2298 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2299 forbid_setid("-I");
fb73857a 2300 ++s;
2301 while (*s && isSPACE(*s))
2302 ++s;
2303 if (*s) {
774d564b 2304 char *e, *p;
0df16ed7
GS		 2305 p = s;
2306 /* ignore trailing spaces (possibly followed by other switches) */
2307 do {
2308 for (e = p; *e && !isSPACE(*e); e++) ;
2309 p = e;
2310 while (isSPACE(*p))
2311 p++;
2312 } while (*p && *p != '-');
2313 e = savepvn(s, e-s);
9c8a64f0 2314 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2315 Safefree(e);
2316 s = p;
2317 if (*s == '-')
2318 s++;
79072805
LW		 2319 }
2320 else
a67e862a 2321 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2322 return s;
79072805 2323 case 'l':
3280af22 2324 PL_minus_l = TRUE;
79072805 2325 s++;
7889fe52
NIS		 2326 if (PL_ors_sv) {
2327 SvREFCNT_dec(PL_ors_sv);
2328 PL_ors_sv = Nullsv;
2329 }
79072805 2330 if (isDIGIT(*s)) {
53305cf1 2331 I32 flags = 0;
7889fe52 2332 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2333 numlen = 3 + (*s == '0');
2334 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2335 s += numlen;
2336 }
2337 else {
8bfdd7d9 2338 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2339 PL_ors_sv = newSVpvn("\n\n",2);
2340 }
2341 else {
8bfdd7d9 2342 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2343 }
79072805
LW		 2344 }
2345 return s;
1a30305b 2346 case 'M':
bbce6d69 2347 forbid_setid("-M"); /* XXX ? */
1a30305b 2348 /* FALL THROUGH */
2349 case 'm':
bbce6d69 2350 forbid_setid("-m"); /* XXX ? */
1a30305b 2351 if (*++s) {
a5f75d66 2352 char *start;
11343788 2353 SV *sv;
a5f75d66
AD		 2354 char *use = "use ";
2355 /* -M-foo == 'no foo' */
2356 if (*s == '-') { use = "no "; ++s; }
11343788 2357 sv = newSVpv(use,0);
a5f75d66 2358 start = s;
1a30305b 2359 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2360 while(isALNUM(*s) || *s==':') ++s;
2361 if (*s != '=') {
11343788 2362 sv_catpv(sv, start);
c07a80fd 2363 if (*(start-1) == 'm') {
2364 if (*s != '\0')
cea2e8a9 2365 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2366 sv_catpv( sv, " ()");
c07a80fd 2367 }
2368 } else {
6df41af2 2369 if (s == start)
be98fb35
GS		 2370 Perl_croak(aTHX_ "Module name required with -%c option",
2371 s[-1]);
11343788
MB		 2372 sv_catpvn(sv, start, s-start);
2373 sv_catpv(sv, " split(/,/,q{");
2374 sv_catpv(sv, ++s);
2375 sv_catpv(sv, "})");
c07a80fd 2376 }
1a30305b 2377 s += strlen(s);
5c831c24 2378 if (!PL_preambleav)
3280af22
NIS		 2379 PL_preambleav = newAV();
2380 av_push(PL_preambleav, sv);
1a30305b 2381 }
2382 else
cea2e8a9 2383 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2384 return s;
79072805 2385 case 'n':
3280af22 2386 PL_minus_n = TRUE;
79072805
LW		 2387 s++;
2388 return s;
2389 case 'p':
3280af22 2390 PL_minus_p = TRUE;
79072805
LW		 2391 s++;
2392 return s;
2393 case 's':
bbce6d69 2394 forbid_setid("-s");
3280af22 2395 PL_doswitches = TRUE;
79072805
LW		 2396 s++;
2397 return s;
6537fe72
MS		 2398 case 't':
2399 if (!PL_tainting)
2400 Perl_croak(aTHX_ "Too late for \"-t\" option");
2401 s++;
2402 return s;
463ee0b2 2403 case 'T':
3280af22 2404 if (!PL_tainting)
cea2e8a9 2405 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2406 s++;
2407 return s;
79072805 2408 case 'u':
bf4acbe4
GS		 2409#ifdef MACOS_TRADITIONAL
2410 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2411#endif
3280af22 2412 PL_do_undump = TRUE;
79072805
LW		 2413 s++;
2414 return s;
2415 case 'U':
3280af22 2416 PL_unsafe = TRUE;
79072805
LW		 2417 s++;
2418 return s;
2419 case 'v':
8e9464f1 2420#if !defined(DGUX)
b0e47665 2421 PerlIO_printf(PerlIO_stdout(),
d2560b70 2422 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2423 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2424#else /* DGUX */
2425/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2426 PerlIO_printf(PerlIO_stdout(),
2427 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2428 PerlIO_printf(PerlIO_stdout(),
2429 Perl_form(aTHX_ " built under %s at %s %s\n",
2430 OSNAME, __DATE__, __TIME__));
2431 PerlIO_printf(PerlIO_stdout(),
2432 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2433 OSVERS));
8e9464f1
JH		 2434#endif /* !DGUX */
2435
fb73857a 2436#if defined(LOCAL_PATCH_COUNT)
2437 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2438 PerlIO_printf(PerlIO_stdout(),
2439 "\n(with %d registered patch%s, "
2440 "see perl -V for more detail)",
2441 (int)LOCAL_PATCH_COUNT,
2442 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2443#endif
1a30305b 2444
b0e47665 2445 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2446 "\n\nCopyright 1987-2002, Larry Wall\n");
eae9c151
JH		 2447#ifdef MACOS_TRADITIONAL
2448 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2449 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 2450 "maintained by Chris Nandor\n");
eae9c151 2451#endif
79072805 2452#ifdef MSDOS
b0e47665
GS		 2453 PerlIO_printf(PerlIO_stdout(),
2454 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2455#endif
2456#ifdef DJGPP
b0e47665
GS		 2457 PerlIO_printf(PerlIO_stdout(),
2458 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2459 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2460#endif
79072805 2461#ifdef OS2
b0e47665
GS		 2462 PerlIO_printf(PerlIO_stdout(),
2463 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 2464 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2465#endif
79072805 2466#ifdef atarist
b0e47665
GS		 2467 PerlIO_printf(PerlIO_stdout(),
2468 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2469#endif
a3f9223b 2470#ifdef __BEOS__
b0e47665
GS		 2471 PerlIO_printf(PerlIO_stdout(),
2472 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2473#endif
1d84e8df 2474#ifdef MPE
b0e47665 2475 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2476 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
1d84e8df 2477#endif
9d116dd7 2478#ifdef OEMVS
b0e47665
GS		 2479 PerlIO_printf(PerlIO_stdout(),
2480 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2481#endif
495c5fdc 2482#ifdef __VOS__
b0e47665 2483 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2484 "Stratus VOS port by Paul_Green@stratus.com, 1997-2002\n");
495c5fdc 2485#endif
092bebab 2486#ifdef __OPEN_VM
b0e47665
GS		 2487 PerlIO_printf(PerlIO_stdout(),
2488 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2489#endif
a1a0e61e 2490#ifdef POSIX_BC
b0e47665
GS		 2491 PerlIO_printf(PerlIO_stdout(),
2492 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2493#endif
61ae2fbf 2494#ifdef __MINT__
b0e47665
GS		 2495 PerlIO_printf(PerlIO_stdout(),
2496 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2497#endif
f83d2536 2498#ifdef EPOC
b0e47665 2499 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2500 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 2501#endif
e1caacb4 2502#ifdef UNDER_CE
be3c0a43 2503 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
e1caacb4
JH		 2504 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2505 wce_hitreturn();
2506#endif
baed7233
DL		 2507#ifdef BINARY_BUILD_NOTICE
2508 BINARY_BUILD_NOTICE;
2509#endif
b0e47665
GS		 2510 PerlIO_printf(PerlIO_stdout(),
2511 "\n\
79072805 2512Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2513GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2514Complete documentation for Perl, including FAQ lists, should be found on\n\
2515this system using `man perl' or `perldoc perl'. If you have access to the\n\
2516Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2517 PerlProc_exit(0);
79072805 2518 case 'w':
599cee73 2519 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2520 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2521 s++;
2522 return s;
2523 case 'W':
ac27b0f5 2524 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS		 2525 if (!specialWARN(PL_compiling.cop_warnings))
2526 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2527 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2528 s++;
2529 return s;
2530 case 'X':
ac27b0f5 2531 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS		 2532 if (!specialWARN(PL_compiling.cop_warnings))
2533 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2534 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2535 s++;
2536 return s;
a0d0e21e 2537 case '*':
79072805
LW		 2538 case ' ':
2539 if (s[1] == '-') /* Additional switches on #! line. */
2540 return s+2;
2541 break;
a0d0e21e 2542 case '-':
79072805 2543 case 0:
51882d45 2544#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2545 case '\r':
2546#endif
79072805
LW		 2547 case '\n':
2548 case '\t':
2549 break;
aa689395 2550#ifdef ALTERNATE_SHEBANG
2551 case 'S': /* OS/2 needs -S on "extproc" line. */
2552 break;
2553#endif
a0d0e21e 2554 case 'P':
3280af22 2555 if (PL_preprocess)
a0d0e21e
LW		 2556 return s+1;
2557 /* FALL THROUGH */
79072805 2558 default:
cea2e8a9 2559 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2560 }
2561 return Nullch;
2562}
2563
2564/* compliments of Tom Christiansen */
2565
2566/* unexec() can be found in the Gnu emacs distribution */
ee580363 2567/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2568
2569void
864dbfa3 2570Perl_my_unexec(pTHX)
79072805
LW		 2571{
2572#ifdef UNEXEC
46fc3d4c 2573 SV* prog;
2574 SV* file;
ee580363 2575 int status = 1;
79072805
LW		 2576 extern int etext;
2577
ee580363 2578 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2579 sv_catpv(prog, "/perl");
6b88bc9c 2580 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2581 sv_catpv(file, ".perldump");
79072805 2582
ee580363
GS		 2583 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2584 /* unexec prints msg to stderr in case of failure */
6ad3d225 2585 PerlProc_exit(status);
79072805 2586#else
a5f75d66
AD		 2587# ifdef VMS
2588# include <lib$routines.h>
2589 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2590# else
79072805 2591 ABORT(); /* for use with undump */
aa689395 2592# endif
a5f75d66 2593#endif
79072805
LW		 2594}
2595
cb68f92d
GS		 2596/* initialize curinterp */
2597STATIC void
cea2e8a9 2598S_init_interp(pTHX)
cb68f92d
GS		 2599{
2600
acfe0abc
GS		 2601#ifdef MULTIPLICITY
2602# define PERLVAR(var,type)
2603# define PERLVARA(var,n,type)
2604# if defined(PERL_IMPLICIT_CONTEXT)
2605# if defined(USE_5005THREADS)
2606# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2607# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2608# else /* !USE_5005THREADS */
2609# define PERLVARI(var,type,init) aTHX->var = init;
2610# define PERLVARIC(var,type,init) aTHX->var = init;
2611# endif /* USE_5005THREADS */
3967c732 2612# else
acfe0abc
GS		 2613# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2614# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2615# endif
acfe0abc
GS		 2616# include "intrpvar.h"
2617# ifndef USE_5005THREADS
2618# include "thrdvar.h"
2619# endif
2620# undef PERLVAR
2621# undef PERLVARA
2622# undef PERLVARI
2623# undef PERLVARIC
2624#else
2625# define PERLVAR(var,type)
2626# define PERLVARA(var,n,type)
2627# define PERLVARI(var,type,init) PL_##var = init;
2628# define PERLVARIC(var,type,init) PL_##var = init;
2629# include "intrpvar.h"
2630# ifndef USE_5005THREADS
2631# include "thrdvar.h"
2632# endif
2633# undef PERLVAR
2634# undef PERLVARA
2635# undef PERLVARI
2636# undef PERLVARIC
cb68f92d
GS		 2637#endif
2638
cb68f92d
GS		 2639}
2640
76e3520e 2641STATIC void
cea2e8a9 2642S_init_main_stash(pTHX)
79072805 2643{
463ee0b2 2644 GV *gv;
6e72f9df 2645
3d47000e 2646
ac27b0f5 2647
3280af22 2648 PL_curstash = PL_defstash = newHV();
79cb57f6 2649 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2650 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2651 SvREFCNT_dec(GvHV(gv));
3280af22 2652 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2653 SvREADONLY_on(gv);
3280af22
NIS		 2654 HvNAME(PL_defstash) = savepv("main");
2655 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2656 GvMULTI_on(PL_incgv);
2657 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2658 GvMULTI_on(PL_hintgv);
2659 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2660 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2661 GvMULTI_on(PL_errgv);
2662 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2663 GvMULTI_on(PL_replgv);
cea2e8a9 2664 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2665 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2666 sv_setpvn(ERRSV, "", 0);
3280af22 2667 PL_curstash = PL_defstash;
11faa288 2668 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2669 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2670 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2671 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2672 /* We must init $/ before switches are processed. */
864dbfa3 2673 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2674}
2675
76e3520e 2676STATIC void
cea2e8a9 2677S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2678{
1b24ed4b
MS		 2679 char *quote;
2680 char *code;
2681 char *cpp_discard_flag;
2682 char *perl;
2683
6c4ab083 2684 *fdscript = -1;
79072805 2685
3280af22
NIS		 2686 if (PL_e_script) {
2687 PL_origfilename = savepv("-e");
96436eeb 2688 }
6c4ab083
GS		 2689 else {
2690 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2691 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2692
2693 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2694 char *s = scriptname + 8;
2695 *fdscript = atoi(s);
2696 while (isDIGIT(*s))
2697 s++;
2698 if (*s) {
2699 scriptname = savepv(s + 1);
3280af22
NIS		 2700 Safefree(PL_origfilename);
2701 PL_origfilename = scriptname;
6c4ab083
GS		 2702 }
2703 }
2704 }
2705
05ec9bb3 2706 CopFILE_free(PL_curcop);
57843af0 2707 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2708 if (strEQ(PL_origfilename,"-"))
79072805 2709 scriptname = "";
01f988be 2710 if (*fdscript >= 0) {
3280af22 2711 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2712# if defined(HAS_FCNTL) && defined(F_SETFD)
2713 if (PL_rsfp)
2714 /* ensure close-on-exec */
2715 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2716# endif
96436eeb 2717 }
3280af22 2718 else if (PL_preprocess) {
46fc3d4c 2719 char *cpp_cfg = CPPSTDIN;
79cb57f6 2720 SV *cpp = newSVpvn("",0);
46fc3d4c 2721 SV *cmd = NEWSV(0,0);
2722
2723 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2724 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2725 sv_catpv(cpp, cpp_cfg);
79072805 2726
1b24ed4b
MS		 2727# ifndef VMS
2728 sv_catpvn(sv, "-I", 2);
2729 sv_catpv(sv,PRIVLIB_EXP);
2730# endif
46fc3d4c 2731
14953ddc
MB		 2732 DEBUG_P(PerlIO_printf(Perl_debug_log,
2733 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2734 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS		 2735
2736# if defined(MSDOS) || defined(WIN32) || defined(VMS)
2737 quote = "\"";
2738# else
2739 quote = "'";
2740# endif
2741
2742# ifdef VMS
2743 cpp_discard_flag = "";
2744# else
2745 cpp_discard_flag = "-C";
2746# endif
2747
2748# ifdef OS2
2749 perl = os2_execname(aTHX);
2750# else
2751 perl = PL_origargv[0];
2752# endif
2753
2754
2755 /* This strips off Perl comments which might interfere with
2756 the C pre-processor, including #!. #line directives are
2757 deliberately stripped to avoid confusion with Perl's version
2758 of #line. FWP played some golf with it so it will fit
2759 into VMS's 255 character buffer.
2760 */
2761 if( PL_doextract )
2762 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2763 else
2764 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2765
2766 Perl_sv_setpvf(aTHX_ cmd, "\
2767%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2768 perl, quote, code, quote, scriptname, cpp,
2769 cpp_discard_flag, sv, CPPMINUS);
2770
3280af22 2771 PL_doextract = FALSE;
1b24ed4b
MS		 2772# ifdef IAMSUID /* actually, this is caught earlier */
2773 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2774# ifdef HAS_SETEUID
2775 (void)seteuid(PL_uid); /* musn't stay setuid root */
2776# else
2777# ifdef HAS_SETREUID
2778 (void)setreuid((Uid_t)-1, PL_uid);
2779# else
2780# ifdef HAS_SETRESUID
2781 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2782# else
2783 PerlProc_setuid(PL_uid);
2784# endif
2785# endif
2786# endif
b28d0864 2787 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2788 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805 2789 }
1b24ed4b 2790# endif /* IAMSUID */
0a6c758d 2791
1b24ed4b
MS		 2792 DEBUG_P(PerlIO_printf(Perl_debug_log,
2793 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS		 2794 SvPVX(cmd)));
2795
3280af22 2796 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2797 SvREFCNT_dec(cmd);
2798 SvREFCNT_dec(cpp);
79072805
LW		 2799 }
2800 else if (!*scriptname) {
bbce6d69 2801 forbid_setid("program input from stdin");
3280af22 2802 PL_rsfp = PerlIO_stdin();
79072805 2803 }
96436eeb 2804 else {
3280af22 2805 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2806# if defined(HAS_FCNTL) && defined(F_SETFD)
2807 if (PL_rsfp)
2808 /* ensure close-on-exec */
2809 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2810# endif
96436eeb 2811 }
3280af22 2812 if (!PL_rsfp) {
1b24ed4b
MS		 2813# ifdef DOSUID
2814# ifndef IAMSUID /* in case script is not readable before setuid */
2815 if (PL_euid &&
2816 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2817 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2818 {
2819 /* try again */
2820 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2821 BIN_EXP, (int)PERL_REVISION,
2822 (int)PERL_VERSION,
2823 (int)PERL_SUBVERSION), PL_origargv);
2824 Perl_croak(aTHX_ "Can't do setuid\n");
2825 }
2826# endif
2827# endif
2828# ifdef IAMSUID
2829 errno = EPERM;
2830 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2831 Strerror(errno));
2832# else
2833 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2834 CopFILE(PL_curcop), Strerror(errno));
2835# endif
13281fa4 2836 }
79072805 2837}
8d063cd8 2838
7b89560d
JH		 2839/* Mention
2840 * I_SYSSTATVFS HAS_FSTATVFS
2841 * I_SYSMOUNT
c890dc6c 2842 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2843 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2844 * here so that metaconfig picks them up. */
2845
104d25b7 2846#ifdef IAMSUID
864dbfa3 2847STATIC int
e688b231 2848S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2849{
0545a864
JH		 2850 int check_okay = 0; /* able to do all the required sys/libcalls */
2851 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2852/*
ad27e871 2853 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2854 * fstatvfs() is UNIX98.
0545a864 2855 * fstatfs() is 4.3 BSD.
ad27e871 2856 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2857 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2858 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2859 */
2860
6439433f
JH		 2861#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2862
2863# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2864 defined(HAS_FSTATVFS)
2865# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2866 struct statvfs stfs;
6439433f 2867
104d25b7
JH		 2868 check_okay = fstatvfs(fd, &stfs) == 0;
2869 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2870# endif /* fstatvfs */
ac27b0f5 2871
6439433f
JH		 2872# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2873 defined(PERL_MOUNT_NOSUID) && \
2874 defined(HAS_FSTATFS) && \
2875 defined(HAS_STRUCT_STATFS) && \
2876 defined(HAS_STRUCT_STATFS_F_FLAGS)
2877# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2878 struct statfs stfs;
6439433f 2879
104d25b7 2880 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2881 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2882# endif /* fstatfs */
2883
2884# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2885 defined(PERL_MOUNT_NOSUID) && \
2886 defined(HAS_FSTAT) && \
2887 defined(HAS_USTAT) && \
2888 defined(HAS_GETMNT) && \
2889 defined(HAS_STRUCT_FS_DATA) && \
2890 defined(NOSTAT_ONE)
2891# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2892 struct stat fdst;
6439433f 2893
0545a864 2894 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2895 struct ustat us;
2896 if (ustat(fdst.st_dev, &us) == 0) {
2897 struct fs_data fsd;
2898 /* NOSTAT_ONE here because we're not examining fields which
2899 * vary between that case and STAT_ONE. */
ad27e871 2900 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2901 size_t cmplen = sizeof(us.f_fname);
2902 if (sizeof(fsd.fd_req.path) < cmplen)
2903 cmplen = sizeof(fsd.fd_req.path);
2904 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2905 fdst.st_dev == fsd.fd_req.dev) {
2906 check_okay = 1;
2907 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2908 }
2909 }
2910 }
2911 }
0545a864 2912 }
6439433f
JH		 2913# endif /* fstat+ustat+getmnt */
2914
2915# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2916 defined(HAS_GETMNTENT) && \
2917 defined(HAS_HASMNTOPT) && \
2918 defined(MNTOPT_NOSUID)
2919# define FD_ON_NOSUID_CHECK_OKAY
2920 FILE *mtab = fopen("/etc/mtab", "r");
2921 struct mntent *entry;
2922 struct stat stb, fsb;
104d25b7
JH		 2923
2924 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2925 while (entry = getmntent(mtab)) {
2926 if (stat(entry->mnt_dir, &fsb) == 0
2927 && fsb.st_dev == stb.st_dev)
2928 {
2929 /* found the filesystem */
2930 check_okay = 1;
2931 if (hasmntopt(entry, MNTOPT_NOSUID))
2932 on_nosuid = 1;
2933 break;
2934 } /* A single fs may well fail its stat(). */
2935 }
104d25b7
JH		 2936 }
2937 if (mtab)
6439433f
JH		 2938 fclose(mtab);
2939# endif /* getmntent+hasmntopt */
0545a864 2940
ac27b0f5 2941 if (!check_okay)
0545a864 2942 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2943 return on_nosuid;
2944}
2945#endif /* IAMSUID */
2946
76e3520e 2947STATIC void
cea2e8a9 2948S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2949{
155aba94 2950#ifdef IAMSUID
96436eeb 2951 int which;
155aba94 2952#endif
96436eeb 2953
13281fa4
LW		 2954 /* do we need to emulate setuid on scripts? */
2955
2956 /* This code is for those BSD systems that have setuid #! scripts disabled
2957 * in the kernel because of a security problem. Merely defining DOSUID
2958 * in perl will not fix that problem, but if you have disabled setuid
2959 * scripts in the kernel, this will attempt to emulate setuid and setgid
2960 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2961 * root version must be called suidperl or sperlN.NNN. If regular perl
2962 * discovers that it has opened a setuid script, it calls suidperl with
2963 * the same argv that it had. If suidperl finds that the script it has
2964 * just opened is NOT setuid root, it sets the effective uid back to the
2965 * uid. We don't just make perl setuid root because that loses the
2966 * effective uid we had before invoking perl, if it was different from the
2967 * uid.
13281fa4
LW		 2968 *
2969 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2970 * be defined in suidperl only. suidperl must be setuid root. The
2971 * Configure script will set this up for you if you want it.
2972 */
a687059c 2973
13281fa4 2974#ifdef DOSUID
6e72f9df 2975 char *s, *s2;
a0d0e21e 2976
b28d0864 2977 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2978 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2979 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2980 I32 len;
2d8e6c8d 2981 STRLEN n_a;
13281fa4 2982
a687059c 2983#ifdef IAMSUID
fe14fcc3 2984#ifndef HAS_SETREUID
a687059c
LW		 2985 /* On this access check to make sure the directories are readable,
2986 * there is actually a small window that the user could use to make
2987 * filename point to an accessible directory. So there is a faint
2988 * chance that someone could execute a setuid script down in a
2989 * non-accessible directory. I don't know what to do about that.
2990 * But I don't think it's too important. The manual lies when
2991 * it says access() is useful in setuid programs.
2992 */
cc49e20b 2993 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2994 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2995#else
2996 /* If we can swap euid and uid, then we can determine access rights
2997 * with a simple stat of the file, and then compare device and
2998 * inode to make sure we did stat() on the same file we opened.
2999 * Then we just have to make sure he or she can execute it.
3000 */
3001 {
3002 struct stat tmpstatbuf;
3003
85e6fe83
LW		 3004 if (
3005#ifdef HAS_SETREUID
b28d0864 3006 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 3007#else
3008# if HAS_SETRESUID
b28d0864 3009 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3010# endif
85e6fe83 3011#endif
b28d0864 3012 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3013 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3014 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3015 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3016#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3017 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3018 Perl_croak(aTHX_ "Permission denied");
104d25b7 3019#endif
b28d0864
NIS		 3020 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3021 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3022 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3023 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3024 }
85e6fe83
LW		 3025 if (
3026#ifdef HAS_SETREUID
b28d0864 3027 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 3028#else
3029# if defined(HAS_SETRESUID)
b28d0864 3030 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3031# endif
85e6fe83 3032#endif
b28d0864 3033 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3034 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3035 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3036 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3037 }
fe14fcc3 3038#endif /* HAS_SETREUID */
a687059c
LW		 3039#endif /* IAMSUID */
3040
b28d0864 3041 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3042 Perl_croak(aTHX_ "Permission denied");
b28d0864 3043 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3044 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3045 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3046 CopLINE_inc(PL_curcop);
6b88bc9c 3047 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3048 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3049 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3050 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3051 if (*s == ' ') s++;
45d8adaa 3052 while (!isSPACE(*s)) s++;
2d8e6c8d 3053 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3054 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3055 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3056 Perl_croak(aTHX_ "Not a perl script");
a687059c 3057 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3058 /*
3059 * #! arg must be what we saw above. They can invoke it by
3060 * mentioning suidperl explicitly, but they may not add any strange
3061 * arguments beyond what #! says if they do invoke suidperl that way.
3062 */
3063 len = strlen(validarg);
3064 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3065 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3066 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3067
3068#ifndef IAMSUID
b28d0864
NIS		 3069 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3070 PL_euid == PL_statbuf.st_uid)
3071 if (!PL_do_undump)
cea2e8a9 3072 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3073FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3074#endif /* IAMSUID */
13281fa4 3075
b28d0864
NIS		 3076 if (PL_euid) { /* oops, we're not the setuid root perl */
3077 (void)PerlIO_close(PL_rsfp);
13281fa4 3078#ifndef IAMSUID
46fc3d4c 3079 /* try again */
a7cb1f99 3080 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3081 (int)PERL_REVISION, (int)PERL_VERSION,
3082 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3083#endif
cea2e8a9 3084 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3085 }
3086
b28d0864 3087 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3088#ifdef HAS_SETEGID
b28d0864 3089 (void)setegid(PL_statbuf.st_gid);
a687059c 3090#else
fe14fcc3 3091#ifdef HAS_SETREGID
b28d0864 3092 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3093#else
3094#ifdef HAS_SETRESGID
b28d0864 3095 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3096#else
b28d0864 3097 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3098#endif
3099#endif
85e6fe83 3100#endif
b28d0864 3101 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3102 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3103 }
b28d0864
NIS		 3104 if (PL_statbuf.st_mode & S_ISUID) {
3105 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3106#ifdef HAS_SETEUID
b28d0864 3107 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3108#else
fe14fcc3 3109#ifdef HAS_SETREUID
b28d0864 3110 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3111#else
3112#ifdef HAS_SETRESUID
b28d0864 3113 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3114#else
b28d0864 3115 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3116#endif
3117#endif
85e6fe83 3118#endif
b28d0864 3119 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3120 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3121 }
b28d0864 3122 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3123#ifdef HAS_SETEUID
b28d0864 3124 (void)seteuid((Uid_t)PL_uid);
a687059c 3125#else
fe14fcc3 3126#ifdef HAS_SETREUID
b28d0864 3127 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3128#else
85e6fe83 3129#ifdef HAS_SETRESUID
b28d0864 3130 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3131#else
b28d0864 3132 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3133#endif
a687059c
LW		 3134#endif
3135#endif
b28d0864 3136 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3137 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3138 }
748a9306 3139 init_ids();
b28d0864 3140 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3141 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3142 }
3143#ifdef IAMSUID
6b88bc9c 3144 else if (PL_preprocess)
cea2e8a9 3145 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3146 else if (fdscript >= 0)
cea2e8a9 3147 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3148 else
cea2e8a9 3149 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3150
3151 /* We absolutely must clear out any saved ids here, so we */
3152 /* exec the real perl, substituting fd script for scriptname. */
3153 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3154 PerlIO_rewind(PL_rsfp);
3155 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3156 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3157 if (!PL_origargv[which])
cea2e8a9
GS		 3158 Perl_croak(aTHX_ "Permission denied");
3159 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3160 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3161#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3162 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3163#endif
a7cb1f99 3164 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3165 (int)PERL_REVISION, (int)PERL_VERSION,
3166 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3167 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3168#endif /* IAMSUID */
a687059c 3169#else /* !DOSUID */
3280af22 3170 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3171#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3172 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3173 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3174 ||
b28d0864 3175 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3176 )
b28d0864 3177 if (!PL_do_undump)
cea2e8a9 3178 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3179FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3180#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3181 /* not set-id, must be wrapped */
a687059c 3182 }
13281fa4 3183#endif /* DOSUID */
79072805 3184}
13281fa4 3185
76e3520e 3186STATIC void
cea2e8a9 3187S_find_beginning(pTHX)
79072805 3188{
6e72f9df 3189 register char *s, *s2;
33b78306
LW		 3190
3191 /* skip forward in input to the real script? */
3192
bbce6d69 3193 forbid_setid("-x");
bf4acbe4 3194#ifdef MACOS_TRADITIONAL
084592ab 3195 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3196
bf4acbe4
GS		 3197 while (PL_doextract || gMacPerl_AlwaysExtract) {
3198 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3199 if (!gMacPerl_AlwaysExtract)
3200 Perl_croak(aTHX_ "No Perl script found in input\n");
3201
3202 if (PL_doextract) /* require explicit override ? */
3203 if (!OverrideExtract(PL_origfilename))
3204 Perl_croak(aTHX_ "User aborted script\n");
3205 else
3206 PL_doextract = FALSE;
3207
3208 /* Pater peccavi, file does not have #! */
3209 PerlIO_rewind(PL_rsfp);
ac27b0f5 3210
bf4acbe4
GS		 3211 break;
3212 }
3213#else
3280af22
NIS		 3214 while (PL_doextract) {
3215 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3216 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3217#endif
4f0c37ba
IZ		 3218 s2 = s;
3219 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3220 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3221 PL_doextract = FALSE;
6e72f9df 3222 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3223 s2 = s;
3224 while (*s == ' ' || *s == '\t') s++;
3225 if (*s++ == '-') {
3226 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3227 if (strnEQ(s2-4,"perl",4))
3228 /*SUPPRESS 530*/
155aba94
GS		 3229 while ((s = moreswitches(s)))
3230 ;
33b78306 3231 }
95e8664e
CN		 3232#ifdef MACOS_TRADITIONAL
3233 break;
3234#endif
83025b21
LW		 3235 }
3236 }
3237}
3238
afe37c7d 3239
76e3520e 3240STATIC void
cea2e8a9 3241S_init_ids(pTHX)
352d5a3a 3242{
d8eceb89
JH		 3243 PL_uid = PerlProc_getuid();
3244 PL_euid = PerlProc_geteuid();
3245 PL_gid = PerlProc_getgid();
3246 PL_egid = PerlProc_getegid();
748a9306 3247#ifdef VMS
b28d0864
NIS		 3248 PL_uid |= PL_gid << 16;
3249 PL_euid |= PL_egid << 16;
748a9306 3250#endif
3280af22 3251 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3252}
79072805 3253
76e3520e 3254STATIC void
cea2e8a9 3255S_forbid_setid(pTHX_ char *s)
bbce6d69 3256{
3280af22 3257 if (PL_euid != PL_uid)
cea2e8a9 3258 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3259 if (PL_egid != PL_gid)
cea2e8a9 3260 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3261}
3262
1ee4443e
IZ		 3263void
3264Perl_init_debugger(pTHX)
748a9306 3265{
1ee4443e
IZ		 3266 HV *ostash = PL_curstash;
3267
3280af22
NIS		 3268 PL_curstash = PL_debstash;
3269 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3270 AvREAL_off(PL_dbargs);
3271 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3272 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3273 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3274 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3275 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3276 sv_setiv(PL_DBsingle, 0);
3280af22 3277 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3278 sv_setiv(PL_DBtrace, 0);
3280af22 3279 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3280 sv_setiv(PL_DBsignal, 0);
1ee4443e 3281 PL_curstash = ostash;
352d5a3a
LW		 3282}
3283
2ce36478
SM		 3284#ifndef STRESS_REALLOC
3285#define REASONABLE(size) (size)
3286#else
3287#define REASONABLE(size) (1) /* unreasonable */
3288#endif
3289
11343788 3290void
cea2e8a9 3291Perl_init_stacks(pTHX)
79072805 3292{
e336de0d 3293 /* start with 128-item stack and 8K cxstack */
3280af22 3294 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3295 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3296 PL_curstackinfo->si_type = PERLSI_MAIN;
3297 PL_curstack = PL_curstackinfo->si_stack;
3298 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3299
3280af22
NIS		 3300 PL_stack_base = AvARRAY(PL_curstack);
3301 PL_stack_sp = PL_stack_base;
3302 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3303
3280af22
NIS		 3304 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3305 PL_tmps_floor = -1;
3306 PL_tmps_ix = -1;
3307 PL_tmps_max = REASONABLE(128);
8990e307 3308
3280af22
NIS		 3309 New(54,PL_markstack,REASONABLE(32),I32);
3310 PL_markstack_ptr = PL_markstack;
3311 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3312
ce2f7c3b 3313 SET_MARK_OFFSET;
e336de0d 3314
3280af22
NIS		 3315 New(54,PL_scopestack,REASONABLE(32),I32);
3316 PL_scopestack_ix = 0;
3317 PL_scopestack_max = REASONABLE(32);
79072805 3318
3280af22
NIS		 3319 New(54,PL_savestack,REASONABLE(128),ANY);
3320 PL_savestack_ix = 0;
3321 PL_savestack_max = REASONABLE(128);
79072805 3322
3280af22
NIS		 3323 New(54,PL_retstack,REASONABLE(16),OP*);
3324 PL_retstack_ix = 0;
3325 PL_retstack_max = REASONABLE(16);
378cc40b 3326}
33b78306 3327
2ce36478
SM		 3328#undef REASONABLE
3329
76e3520e 3330STATIC void
cea2e8a9 3331S_nuke_stacks(pTHX)
6e72f9df 3332{
3280af22
NIS		 3333 while (PL_curstackinfo->si_next)
3334 PL_curstackinfo = PL_curstackinfo->si_next;
3335 while (PL_curstackinfo) {
3336 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3337 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3338 Safefree(PL_curstackinfo->si_cxstack);
3339 Safefree(PL_curstackinfo);
3340 PL_curstackinfo = p;
e336de0d 3341 }
3280af22
NIS		 3342 Safefree(PL_tmps_stack);
3343 Safefree(PL_markstack);
3344 Safefree(PL_scopestack);
3345 Safefree(PL_savestack);
3346 Safefree(PL_retstack);
378cc40b 3347}
33b78306 3348
76e3520e 3349STATIC void
cea2e8a9 3350S_init_lexer(pTHX)
8990e307 3351{
06039172 3352 PerlIO *tmpfp;
3280af22
NIS		 3353 tmpfp = PL_rsfp;
3354 PL_rsfp = Nullfp;
3355 lex_start(PL_linestr);
3356 PL_rsfp = tmpfp;
79cb57f6 3357 PL_subname = newSVpvn("main",4);
8990e307
LW		 3358}
3359
76e3520e 3360STATIC void
cea2e8a9 3361S_init_predump_symbols(pTHX)
45d8adaa 3362{
93a17b20 3363 GV *tmpgv;
af8c498a 3364 IO *io;
79072805 3365
864dbfa3 3366 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3367 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3368 GvMULTI_on(PL_stdingv);
af8c498a 3369 io = GvIOp(PL_stdingv);
a04651f4 3370 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3371 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3372 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3373 GvMULTI_on(tmpgv);
af8c498a 3374 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3375
85e6fe83 3376 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3377 GvMULTI_on(tmpgv);
af8c498a 3378 io = GvIOp(tmpgv);
a04651f4 3379 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3380 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3381 setdefout(tmpgv);
adbc6bb1 3382 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3383 GvMULTI_on(tmpgv);
af8c498a 3384 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3385
bf49b057
GS		 3386 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3387 GvMULTI_on(PL_stderrgv);
3388 io = GvIOp(PL_stderrgv);
a04651f4 3389 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3390 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3391 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3392 GvMULTI_on(tmpgv);
af8c498a 3393 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3394
3280af22 3395 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3396
bf4acbe4
GS		 3397 if (PL_osname)
3398 Safefree(PL_osname);
3399 PL_osname = savepv(OSNAME);
79072805 3400}
33b78306 3401
a11ec5a9
RGS		 3402void
3403Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
33b78306 3404{
79072805 3405 char *s;
79072805 3406 argc--,argv++; /* skip name of script */
3280af22 3407 if (PL_doswitches) {
79072805
LW		 3408 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3409 if (!argv[0][1])
3410 break;
379d538a 3411 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3412 argc--,argv++;
3413 break;
3414 }
155aba94 3415 if ((s = strchr(argv[0], '='))) {
79072805 3416 *s++ = '\0';
85e6fe83 3417 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3418 }
3419 else
85e6fe83 3420 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3421 }
79072805 3422 }
a11ec5a9
RGS		 3423 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3424 GvMULTI_on(PL_argvgv);
3425 (void)gv_AVadd(PL_argvgv);
3426 av_clear(GvAVn(PL_argvgv));
3427 for (; argc > 0; argc--,argv++) {
3428 SV *sv = newSVpv(argv[0],0);
3429 av_push(GvAVn(PL_argvgv),sv);
3430 if (PL_widesyscalls)
3431 (void)sv_utf8_decode(sv);
3432 }
3433 }
3434}
3435
04fee9b5
NIS		 3436#ifdef HAS_PROCSELFEXE
3437/* This is a function so that we don't hold on to MAXPATHLEN
8338e367 3438 bytes of stack longer than necessary
04fee9b5
NIS		 3439 */
3440STATIC void
3441S_procself_val(pTHX_ SV *sv, char *arg0)
3442{
3443 char buf[MAXPATHLEN];
d13a6521 3444 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
04fee9b5
NIS		 3445 if (len > 0) {
3446 sv_setpvn(sv,buf,len);
3447 }
3448 else {
3449 sv_setpv(sv,arg0);
3450 }
3451}
3452#endif /* HAS_PROCSELFEXE */
3453
a11ec5a9
RGS		 3454STATIC void
3455S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3456{
3457 char *s;
3458 SV *sv;
3459 GV* tmpgv;
a11ec5a9 3460
3280af22
NIS		 3461 PL_toptarget = NEWSV(0,0);
3462 sv_upgrade(PL_toptarget, SVt_PVFM);
3463 sv_setpvn(PL_toptarget, "", 0);
3464 PL_bodytarget = NEWSV(0,0);
3465 sv_upgrade(PL_bodytarget, SVt_PVFM);
3466 sv_setpvn(PL_bodytarget, "", 0);
3467 PL_formtarget = PL_bodytarget;
79072805 3468
bbce6d69 3469 TAINT;
a11ec5a9
RGS		 3470
3471 init_argv_symbols(argc,argv);
3472
155aba94 3473 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3474#ifdef MACOS_TRADITIONAL
3475 /* $0 is not majick on a Mac */
3476 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3477#else
3280af22 3478 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3479 magicname("0", "0", 1);
bf4acbe4 3480#endif
79072805 3481 }
04fee9b5
NIS		 3482 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3483#ifdef HAS_PROCSELFEXE
3484 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3485#else
8338e367 3486#ifdef OS2
23da6c43 3487 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
8338e367
JH		 3488#else
3489 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3490#endif
04fee9b5
NIS		 3491#endif
3492 }
155aba94 3493 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3494 HV *hv;
3280af22
NIS		 3495 GvMULTI_on(PL_envgv);
3496 hv = GvHVn(PL_envgv);
14befaf4 3497 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3498#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3499 /* Note that if the supplied env parameter is actually a copy
3500 of the global environ then it may now point to free'd memory
3501 if the environment has been modified since. To avoid this
3502 problem we treat env==NULL as meaning 'use the default'
3503 */
3504 if (!env)
3505 env = environ;
5aabfad6 3506 if (env != environ)
79072805 3507 environ[0] = Nullch;
764df951
IZ		 3508 if (env)
3509 for (; *env; env++) {
93a17b20 3510 if (!(s = strchr(*env,'=')))
79072805 3511 continue;
60ce6247 3512#if defined(MSDOS)
61968511 3513 *s = '\0';
137443ea 3514 (void)strupr(*env);
61968511 3515 *s = '=';
137443ea 3516#endif
61968511 3517 sv = newSVpv(s+1, 0);
79072805 3518 (void)hv_store(hv, *env, s - *env, sv, 0);
61968511
GA		 3519 if (env != environ)
3520 mg_set(sv);
764df951 3521 }
103a7189 3522#endif /* USE_ENVIRON_ARRAY */
79072805 3523 }
bbce6d69 3524 TAINT_NOT;
306196c3
MS		 3525 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3526 SvREADONLY_off(GvSV(tmpgv));
7766f137 3527 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
306196c3
MS		 3528 SvREADONLY_on(GvSV(tmpgv));
3529 }
33b78306 3530}
34de22dd 3531
76e3520e 3532STATIC void
cea2e8a9 3533S_init_perllib(pTHX)
34de22dd 3534{
85e6fe83 3535 char *s;
3280af22 3536 if (!PL_tainting) {
552a7a9b 3537#ifndef VMS
76e3520e 3538 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3539 if (s)
9c8a64f0 3540 incpush(s, TRUE, TRUE);
85e6fe83 3541 else
9c8a64f0 3542 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3543#else /* VMS */
3544 /* Treat PERL5?LIB as a possible search list logical name -- the
3545 * "natural" VMS idiom for a Unix path string. We allow each
3546 * element to be a set of |-separated directories for compatibility.
3547 */
3548 char buf[256];
3549 int idx = 0;
3550 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3551 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3552 else
9c8a64f0 3553 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3554#endif /* VMS */
85e6fe83 3555 }
34de22dd 3556
c90c0ff4 3557/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3558 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3559*/
4633a7c4 3560#ifdef APPLLIB_EXP
9c8a64f0 3561 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3562#endif
4633a7c4 3563
fed7345c 3564#ifdef ARCHLIB_EXP
9c8a64f0 3565 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3566#endif
bf4acbe4
GS		 3567#ifdef MACOS_TRADITIONAL
3568 {
3569 struct stat tmpstatbuf;
3570 SV * privdir = NEWSV(55, 0);
3571 char * macperl = PerlEnv_getenv("MACPERL");
3572
3573 if (!macperl)
3574 macperl = "";
3575
3576 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3577 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3578 incpush(SvPVX(privdir), TRUE, FALSE);
3579 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3580 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3581 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3582
bf4acbe4
GS		 3583 SvREFCNT_dec(privdir);
3584 }
3585 if (!PL_tainting)
3586 incpush(":", FALSE, FALSE);
3587#else
fed7345c 3588#ifndef PRIVLIB_EXP
65f19062 3589# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3590#endif
ac27b0f5 3591#if defined(WIN32)
9c8a64f0 3592 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3593#else
9c8a64f0 3594 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3595#endif
4633a7c4 3596
65f19062 3597#ifdef SITEARCH_EXP
3b290362
GS		 3598 /* sitearch is always relative to sitelib on Windows for
3599 * DLL-based path intuition to work correctly */
3600# if !defined(WIN32)
9c8a64f0 3601 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3602# endif
3603#endif
3604
4633a7c4 3605#ifdef SITELIB_EXP
65f19062 3606# if defined(WIN32)
9c8a64f0 3607 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3608# else
9c8a64f0 3609 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3610# endif
3611#endif
189d1e8d 3612
65f19062 3613#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3614 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3615#endif
65f19062
GS		 3616
3617#ifdef PERL_VENDORARCH_EXP
4ea817c6 3618 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3619 * DLL-based path intuition to work correctly */
3620# if !defined(WIN32)
9c8a64f0 3621 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3622# endif
4b03c463 3623#endif
65f19062
GS		 3624
3625#ifdef PERL_VENDORLIB_EXP
3626# if defined(WIN32)
9c8a64f0 3627 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3628# else
9c8a64f0 3629 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3630# endif
a3635516 3631#endif
65f19062
GS		 3632
3633#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3634 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3635#endif
65f19062 3636
3b777bb4
GS		 3637#ifdef PERL_OTHERLIBDIRS
3638 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3639#endif
3640
3280af22 3641 if (!PL_tainting)
9c8a64f0 3642 incpush(".", FALSE, FALSE);
bf4acbe4 3643#endif /* MACOS_TRADITIONAL */
774d564b 3644}
3645
ed79a026 3646#if defined(DOSISH) || defined(EPOC)
774d564b 3647# define PERLLIB_SEP ';'
3648#else
3649# if defined(VMS)
3650# define PERLLIB_SEP '|'
3651# else
bf4acbe4
GS		 3652# if defined(MACOS_TRADITIONAL)
3653# define PERLLIB_SEP ','
3654# else
3655# define PERLLIB_SEP ':'
3656# endif
774d564b 3657# endif
3658#endif
3659#ifndef PERLLIB_MANGLE
3660# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3661#endif
774d564b 3662
76e3520e 3663STATIC void
9c8a64f0 3664S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3665{
3666 SV *subdir = Nullsv;
774d564b 3667
3b290362 3668 if (!p || !*p)
774d564b 3669 return;
3670
9c8a64f0 3671 if (addsubdirs || addoldvers) {
00db4c45 3672 subdir = sv_newmortal();
774d564b 3673 }
3674
3675 /* Break at all separators */
3676 while (p && *p) {
8c52afec 3677 SV *libdir = NEWSV(55,0);
774d564b 3678 char *s;
3679
3680 /* skip any consecutive separators */
3681 while ( *p == PERLLIB_SEP ) {
3682 /* Uncomment the next line for PATH semantics */
79cb57f6 3683 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3684 p++;
3685 }
3686
3687 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3688 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3689 (STRLEN)(s - p));
3690 p = s + 1;
3691 }
3692 else {
3693 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3694 p = Nullch; /* break out */
3695 }
bf4acbe4
GS		 3696#ifdef MACOS_TRADITIONAL
3697 if (!strchr(SvPVX(libdir), ':'))
3698 sv_insert(libdir, 0, 0, ":", 1);
3699 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3700 sv_catpv(libdir, ":");
3701#endif
774d564b 3702
3703 /*
3704 * BEFORE pushing libdir onto @INC we may first push version- and
3705 * archname-specific sub-directories.
3706 */
9c8a64f0 3707 if (addsubdirs || addoldvers) {
29d82f8d 3708#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3709 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3710 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3711 const char **incver;
3712#endif
774d564b 3713 struct stat tmpstatbuf;
aa689395 3714#ifdef VMS
3715 char *unix;
3716 STRLEN len;
774d564b 3717
2d8e6c8d 3718 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3719 len = strlen(unix);
3720 while (unix[len-1] == '/') len--; /* Cosmetic */
3721 sv_usepvn(libdir,unix,len);
3722 }
3723 else
bf49b057 3724 PerlIO_printf(Perl_error_log,
aa689395 3725 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3726 SvPV(libdir,len));
aa689395 3727#endif
9c8a64f0 3728 if (addsubdirs) {
bf4acbe4
GS		 3729#ifdef MACOS_TRADITIONAL
3730#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3731#define PERL_ARCH_FMT "%s:"
3732#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3733#else
3734#define PERL_AV_SUFFIX_FMT "/"
3735#define PERL_ARCH_FMT "/%s"
084592ab 3736#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3737#endif
9c8a64f0 3738 /* .../version/archname if -d .../version/archname */
084592ab 3739 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3740 libdir,
3741 (int)PERL_REVISION, (int)PERL_VERSION,
3742 (int)PERL_SUBVERSION, ARCHNAME);
3743 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3744 S_ISDIR(tmpstatbuf.st_mode))
3745 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3746
9c8a64f0 3747 /* .../version if -d .../version */
084592ab 3748 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3749 (int)PERL_REVISION, (int)PERL_VERSION,
3750 (int)PERL_SUBVERSION);
3751 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3752 S_ISDIR(tmpstatbuf.st_mode))
3753 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3754
3755 /* .../archname if -d .../archname */
bf4acbe4 3756 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3757 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3758 S_ISDIR(tmpstatbuf.st_mode))
3759 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3760 }
9c8a64f0 3761
9c8a64f0 3762#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3763 if (addoldvers) {
9c8a64f0
GS		 3764 for (incver = incverlist; *incver; incver++) {
3765 /* .../xxx if -d .../xxx */
bf4acbe4 3766 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3767 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3768 S_ISDIR(tmpstatbuf.st_mode))
3769 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3770 }
3771 }
29d82f8d 3772#endif
774d564b 3773 }
3774
3775 /* finally push this lib directory on the end of @INC */
3280af22 3776 av_push(GvAVn(PL_incgv), libdir);
774d564b 3777 }
34de22dd 3778}
93a17b20 3779
4d1ff10f 3780#ifdef USE_5005THREADS
76e3520e 3781STATIC struct perl_thread *
cea2e8a9 3782S_init_main_thread(pTHX)
199100c8 3783{
c5be433b 3784#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3785 struct perl_thread *thr;
cea2e8a9 3786#endif
199100c8
MB		 3787 XPV *xpv;
3788
52e1cb5e 3789 Newz(53, thr, 1, struct perl_thread);
533c011a 3790 PL_curcop = &PL_compiling;
c5be433b 3791 thr->interp = PERL_GET_INTERP;
199100c8 3792 thr->cvcache = newHV();
54b9620d 3793 thr->threadsv = newAV();
940cb80d 3794 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3795 thr->specific = newAV();
3796 thr->flags = THRf_R_JOINABLE;
3797 MUTEX_INIT(&thr->mutex);
3798 /* Handcraft thrsv similarly to mess_sv */
533c011a 3799 New(53, PL_thrsv, 1, SV);
199100c8 3800 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3801 SvFLAGS(PL_thrsv) = SVt_PV;
3802 SvANY(PL_thrsv) = (void*)xpv;
3803 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3804 SvPVX(PL_thrsv) = (char*)thr;
3805 SvCUR_set(PL_thrsv, sizeof(thr));
3806 SvLEN_set(PL_thrsv, sizeof(thr));
3807 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3808 thr->oursv = PL_thrsv;
3809 PL_chopset = " \n-";
3967c732 3810 PL_dumpindent = 4;
533c011a
NIS		 3811
3812 MUTEX_LOCK(&PL_threads_mutex);
3813 PL_nthreads++;
199100c8
MB		 3814 thr->tid = 0;
3815 thr->next = thr;
3816 thr->prev = thr;
8dcd6f7b 3817 thr->thr_done = 0;
533c011a 3818 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3819
4b026b9e 3820#ifdef HAVE_THREAD_INTERN
4f63d024 3821 Perl_init_thread_intern(thr);
235db74f
GS		 3822#endif
3823
3824#ifdef SET_THREAD_SELF
3825 SET_THREAD_SELF(thr);
199100c8
MB		 3826#else
3827 thr->self = pthread_self();
235db74f 3828#endif /* SET_THREAD_SELF */
06d86050 3829 PERL_SET_THX(thr);
199100c8
MB		 3830
3831 /*
411caa50
JH		 3832 * These must come after the thread self setting
3833 * because sv_setpvn does SvTAINT and the taint
3834 * fields thread selfness being set.
199100c8 3835 */
533c011a
NIS		 3836 PL_toptarget = NEWSV(0,0);
3837 sv_upgrade(PL_toptarget, SVt_PVFM);
3838 sv_setpvn(PL_toptarget, "", 0);
3839 PL_bodytarget = NEWSV(0,0);
3840 sv_upgrade(PL_bodytarget, SVt_PVFM);
3841 sv_setpvn(PL_bodytarget, "", 0);
3842 PL_formtarget = PL_bodytarget;
79cb57f6 3843 thr->errsv = newSVpvn("", 0);
78857c3c 3844 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3845
533c011a 3846 PL_maxscream = -1;
a2efc822 3847 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 3848 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3849 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3850 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3851 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3852 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3853 PL_regindent = 0;
3854 PL_reginterp_cnt = 0;
5c0ca799 3855
199100c8
MB		 3856 return thr;
3857}
4d1ff10f 3858#endif /* USE_5005THREADS */
199100c8 3859
93a17b20 3860void
864dbfa3 3861Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3862{
971a9dd3 3863 SV *atsv;
57843af0 3864 line_t oldline = CopLINE(PL_curcop);
312caa8e 3865 CV *cv;
22921e25 3866 STRLEN len;
6224f72b 3867 int ret;
db36c5a1 3868 dJMPENV;
93a17b20 3869
76e3520e 3870 while (AvFILL(paramList) >= 0) {
312caa8e 3871 cv = (CV*)av_shift(paramList);
aefff11f 3872 if (PL_savebegin && (paramList == PL_beginav)) {
059a8bb7
JH		 3873 /* save PL_beginav for compiler */
3874 if (! PL_beginav_save)
3875 PL_beginav_save = newAV();
3876 av_push(PL_beginav_save, (SV*)cv);
3877 } else {
3878 SAVEFREESV(cv);
3879 }
14dd3ad8
GS		 3880#ifdef PERL_FLEXIBLE_EXCEPTIONS
3881 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3882#else
3883 JMPENV_PUSH(ret);
3884#endif
6224f72b 3885 switch (ret) {
312caa8e 3886 case 0:
14dd3ad8
GS		 3887#ifndef PERL_FLEXIBLE_EXCEPTIONS
3888 call_list_body(cv);
3889#endif
971a9dd3 3890 atsv = ERRSV;
312caa8e
CS		 3891 (void)SvPV(atsv, len);
3892 if (len) {
971a9dd3 3893 STRLEN n_a;
312caa8e 3894 PL_curcop = &PL_compiling;
57843af0 3895 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3896 if (paramList == PL_beginav)
3897 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3898 else
4f25aa18
GS		 3899 Perl_sv_catpvf(aTHX_ atsv,
3900 "%s failed--call queue aborted",
7d30b5c4 3901 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3902 : paramList == PL_initav ? "INIT"
3903 : "END");
312caa8e
CS		 3904 while (PL_scopestack_ix > oldscope)
3905 LEAVE;
14dd3ad8 3906 JMPENV_POP;
971a9dd3 3907 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3908 }
85e6fe83 3909 break;
6224f72b 3910 case 1:
f86702cc 3911 STATUS_ALL_FAILURE;
85e6fe83 3912 /* FALL THROUGH */
6224f72b 3913 case 2:
85e6fe83 3914 /* my_exit() was called */
3280af22 3915 while (PL_scopestack_ix > oldscope)
2ae324a7 3916 LEAVE;
84902520 3917 FREETMPS;
3280af22 3918 PL_curstash = PL_defstash;
3280af22 3919 PL_curcop = &PL_compiling;
57843af0 3920 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3921 JMPENV_POP;
cc3604b1 3922 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3923 if (paramList == PL_beginav)
cea2e8a9 3924 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3925 else
4f25aa18 3926 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3927 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3928 : paramList == PL_initav ? "INIT"
3929 : "END");
85e6fe83 3930 }
f86702cc 3931 my_exit_jump();
85e6fe83 3932 /* NOTREACHED */
6224f72b 3933 case 3:
312caa8e
CS		 3934 if (PL_restartop) {
3935 PL_curcop = &PL_compiling;
57843af0 3936 CopLINE_set(PL_curcop, oldline);
312caa8e 3937 JMPENV_JUMP(3);
85e6fe83 3938 }
bf49b057 3939 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3940 FREETMPS;
3941 break;
8990e307 3942 }
14dd3ad8 3943 JMPENV_POP;
93a17b20 3944 }
93a17b20 3945}
93a17b20 3946
14dd3ad8 3947#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3948STATIC void *
14dd3ad8 3949S_vcall_list_body(pTHX_ va_list args)
312caa8e 3950{
312caa8e 3951 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3952 return call_list_body(cv);
3953}
3954#endif
312caa8e 3955
14dd3ad8
GS		 3956STATIC void *
3957S_call_list_body(pTHX_ CV *cv)
3958{
312caa8e 3959 PUSHMARK(PL_stack_sp);
864dbfa3 3960 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3961 return NULL;
3962}
3963
f86702cc 3964void
864dbfa3 3965Perl_my_exit(pTHX_ U32 status)
f86702cc 3966{
8b73bbec 3967 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3968 thr, (unsigned long) status));
f86702cc 3969 switch (status) {
3970 case 0:
3971 STATUS_ALL_SUCCESS;
3972 break;
3973 case 1:
3974 STATUS_ALL_FAILURE;
3975 break;
3976 default:
3977 STATUS_NATIVE_SET(status);
3978 break;
3979 }
3980 my_exit_jump();
3981}
3982
3983void
864dbfa3 3984Perl_my_failure_exit(pTHX)
f86702cc 3985{
3986#ifdef VMS
3987 if (vaxc$errno & 1) {
4fdae800 3988 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3989 STATUS_NATIVE_SET(44);
f86702cc 3990 }
3991 else {
ff0cee69 3992 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3993 STATUS_NATIVE_SET(44);
f86702cc 3994 else
4fdae800 3995 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3996 }
3997#else
9b599b2a 3998 int exitstatus;
f86702cc 3999 if (errno & 255)
4000 STATUS_POSIX_SET(errno);
9b599b2a 4001 else {
ac27b0f5 4002 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 4003 if (exitstatus & 255)
4004 STATUS_POSIX_SET(exitstatus);
4005 else
4006 STATUS_POSIX_SET(255);
4007 }
f86702cc 4008#endif
4009 my_exit_jump();
93a17b20
LW		 4010}
4011
76e3520e 4012STATIC void
cea2e8a9 4013S_my_exit_jump(pTHX)
f86702cc 4014{
c09156bb 4015 register PERL_CONTEXT *cx;
f86702cc 4016 I32 gimme;
4017 SV **newsp;
4018
3280af22
NIS		 4019 if (PL_e_script) {
4020 SvREFCNT_dec(PL_e_script);
4021 PL_e_script = Nullsv;
f86702cc 4022 }
4023
3280af22 4024 POPSTACK_TO(PL_mainstack);
f86702cc 4025 if (cxstack_ix >= 0) {
4026 if (cxstack_ix > 0)
4027 dounwind(0);
3280af22 4028 POPBLOCK(cx,PL_curpm);
f86702cc 4029 LEAVE;
4030 }
ff0cee69 4031
6224f72b 4032 JMPENV_JUMP(2);
f86702cc 4033}
873ef191 4034
0cb96387 4035static I32
acfe0abc 4036read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 4037{
4038 char *p, *nl;
3280af22 4039 p = SvPVX(PL_e_script);
873ef191 4040 nl = strchr(p, '\n');
3280af22 4041 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 4042 if (nl-p == 0) {
0cb96387 4043 filter_del(read_e_script);
873ef191 4044 return 0;
7dfe3f66 4045 }
873ef191 4046 sv_catpvn(buf_sv, p, nl-p);
3280af22 4047 sv_chop(PL_e_script, nl);
873ef191
GS		 4048 return 1;
4049}
Unnamed repository; edit this file 'description' to name the repository.