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fix t/op/misc.t for VMS
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
0cb96387
GS		 28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
873ef191 42#ifdef PERL_OBJECT
7766f137
GS		 43#define perl_construct Perl_construct
44#define perl_parse Perl_parse
45#define perl_run Perl_run
46#define perl_destruct Perl_destruct
47#define perl_free Perl_free
48#endif
32e30700 49
06d86050
GS		 50#if defined(USE_THREADS)
51# define INIT_TLS_AND_INTERP \
52 STMT_START { \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
55 INIT_THREADS; \
56 ALLOC_THREAD_KEY; \
57 } \
58 } STMT_END
59#else
60# if defined(USE_ITHREADS)
61# define INIT_TLS_AND_INTERP \
62 STMT_START { \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
65 INIT_THREADS; \
66 ALLOC_THREAD_KEY; \
534825c4
GS		 67 PERL_SET_THX(my_perl); \
68 OP_REFCNT_INIT; \
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050
GS		 73 } STMT_END
74# else
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
83#endif
84
32e30700
GS		 85#ifdef PERL_IMPLICIT_SYS
86PerlInterpreter *
7766f137
GS		 87perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
92{
93 PerlInterpreter *my_perl;
7766f137
GS		 94#ifdef PERL_OBJECT
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
06d86050 97 INIT_TLS_AND_INTERP;
7766f137 98#else
32e30700
GS		 99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 101 INIT_TLS_AND_INTERP;
32e30700
GS		 102 Zero(my_perl, 1, PerlInterpreter);
103 PL_Mem = ipM;
7766f137
GS		 104 PL_MemShared = ipMS;
105 PL_MemParse = ipMP;
32e30700
GS		 106 PL_Env = ipE;
107 PL_StdIO = ipStd;
108 PL_LIO = ipLIO;
109 PL_Dir = ipD;
110 PL_Sock = ipS;
111 PL_Proc = ipP;
7766f137
GS		 112#endif
113
32e30700
GS		 114 return my_perl;
115}
116#else
954c1994
GS		 117
118/*
119=for apidoc perl_alloc
120
121Allocates a new Perl interpreter. See L<perlembed>.
122
123=cut
124*/
125
93a17b20 126PerlInterpreter *
cea2e8a9 127perl_alloc(void)
79072805 128{
cea2e8a9 129 PerlInterpreter *my_perl;
79072805 130
54aff467 131 /* New() needs interpreter, so call malloc() instead */
e8ee3774 132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 133
06d86050 134 INIT_TLS_AND_INTERP;
dedcbb81 135 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 136 return my_perl;
79072805 137}
32e30700 138#endif /* PERL_IMPLICIT_SYS */
79072805 139
954c1994
GS		 140/*
141=for apidoc perl_construct
142
143Initializes a new Perl interpreter. See L<perlembed>.
144
145=cut
146*/
147
79072805 148void
0cb96387 149perl_construct(pTHXx)
79072805 150{
a863c7d1 151#ifdef USE_THREADS
a863c7d1 152#ifndef FAKE_THREADS
e1f15930 153 struct perl_thread *thr = NULL;
a863c7d1
MB		 154#endif /* FAKE_THREADS */
155#endif /* USE_THREADS */
ba869deb 156
8990e307 157#ifdef MULTIPLICITY
54aff467 158 init_interp();
ac27b0f5 159 PL_perl_destruct_level = 1;
54aff467
GS		 160#else
161 if (PL_perl_destruct_level > 0)
162 init_interp();
163#endif
164
33f46ff6 165 /* Init the real globals (and main thread)? */
3280af22 166 if (!PL_linestr) {
1feb2720 167#ifdef USE_THREADS
533c011a 168 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 169 /*
170 * Safe to use basic SV functions from now on (though
171 * not things like mortals or tainting yet).
172 */
533c011a
NIS		 173 MUTEX_INIT(&PL_eval_mutex);
174 COND_INIT(&PL_eval_cond);
175 MUTEX_INIT(&PL_threads_mutex);
176 COND_INIT(&PL_nthreads_cond);
ba869deb 177# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 178 MUTEX_INIT(&PL_svref_mutex);
ba869deb 179# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 180
5ff3f7a4 181 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 182 MUTEX_INIT(&PL_sv_lock_mutex);
183 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 184
199100c8 185 thr = init_main_thread();
11343788
MB		 186#endif /* USE_THREADS */
187
14dd3ad8 188#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 189 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 190#endif
312caa8e 191
2aea9f8a
GS		 192 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193
3280af22
NIS		 194 PL_linestr = NEWSV(65,79);
195 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 196
3280af22 197 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 198 /* set read-only and try to insure than we wont see REFCNT==0
199 very often */
200
3280af22
NIS		 201 SvREADONLY_on(&PL_sv_undef);
202 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 203
3280af22
NIS		 204 sv_setpv(&PL_sv_no,PL_No);
205 SvNV(&PL_sv_no);
206 SvREADONLY_on(&PL_sv_no);
207 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 208
3280af22
NIS		 209 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvNV(&PL_sv_yes);
211 SvREADONLY_on(&PL_sv_yes);
212 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 213 }
79072805 214
76e3520e
GS		 215#ifdef PERL_OBJECT
216 /* TODO: */
6b88bc9c 217 /* PL_sighandlerp = sighandler; */
76e3520e 218#else
cea2e8a9 219 PL_sighandlerp = Perl_sighandler;
76e3520e 220#endif
3280af22 221 PL_pidstatus = newHV();
44a8e56a 222
79072805
LW		 223#ifdef MSDOS
224 /*
225 * There is no way we can refer to them from Perl so close them to save
226 * space. The other alternative would be to provide STDAUX and STDPRN
227 * filehandles.
228 */
2b96b0a5
JH		 229 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
230 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW		 231#endif
232 }
233
79cb57f6 234 PL_nrs = newSVpvn("\n", 1);
3280af22 235 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 236
cea2e8a9 237 init_stacks();
79072805 238
748a9306 239 init_ids();
3280af22 240 PL_lex_state = LEX_NOTPARSING;
a5f75d66 241
312caa8e 242 JMPENV_BOOTSTRAP;
f86702cc 243 STATUS_ALL_SUCCESS;
244
0672f40e 245 init_i18nl10n(1);
36477c24 246 SET_NUMERIC_STANDARD();
0b5b802d 247
a7cb1f99
GS		 248 {
249 U8 *s;
250 PL_patchlevel = NEWSV(0,4);
155aba94 251 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 252 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 253 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 254 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 255 /* Build version strings using "native" characters */
256 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
257 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
258 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 259 *s = '\0';
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 264#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 265 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 266#endif
a7cb1f99
GS		 267 ;
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
271 }
79072805 272
ab821d7f 273#if defined(LOCAL_PATCH_COUNT)
3280af22 274 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 275#endif
276
52853b95
GS		 277#ifdef HAVE_INTERP_INTERN
278 sys_intern_init();
279#endif
280
4b556e6c 281 PerlIO_init(); /* Hook to IO system */
760ac839 282
3280af22
NIS		 283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 285 PL_errors = newSVpvn("",0);
1fcf4c12
AB		 286#ifdef USE_ITHREADS
287 PL_regex_padav = newAV();
288#endif
e5dd39fc
AB		 289#ifdef USE_REENTRANT_API
290 New(31337, PL_reentrant_buffer,1, REBUF);
291 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
292#endif
8990e307 293 ENTER;
79072805
LW		 294}
295
954c1994
GS		 296/*
297=for apidoc perl_destruct
298
299Shuts down a Perl interpreter. See L<perlembed>.
300
301=cut
302*/
303
79072805 304void
0cb96387 305perl_destruct(pTHXx)
79072805 306{
748a9306 307 int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 308 HV *hv;
1f2bfc8a 309#ifdef USE_THREADS
33f46ff6 310 Thread t;
cea2e8a9 311 dTHX;
1f2bfc8a 312#endif /* USE_THREADS */
8990e307 313
7766f137
GS		 314 /* wait for all pseudo-forked children to finish */
315 PERL_WAIT_FOR_CHILDREN;
316
11343788 317#ifdef USE_THREADS
0f15f207 318#ifndef FAKE_THREADS
8023c3ce
MB		 319 /* Pass 1 on any remaining threads: detach joinables, join zombies */
320 retry_cleanup:
533c011a 321 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 322 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 323 "perl_destruct: waiting for %d threads...\n",
533c011a 324 PL_nthreads - 1));
33f46ff6 325 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 326 MUTEX_LOCK(&t->mutex);
327 switch (ThrSTATE(t)) {
328 AV *av;
c7848ba1 329 case THRf_ZOMBIE:
bf49b057 330 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 331 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 332 ThrSETSTATE(t, THRf_DEAD);
333 MUTEX_UNLOCK(&t->mutex);
533c011a 334 PL_nthreads--;
8023c3ce
MB		 335 /*
336 * The SvREFCNT_dec below may take a long time (e.g. av
337 * may contain an object scalar whose destructor gets
338 * called) so we have to unlock threads_mutex and start
339 * all over again.
340 */
533c011a 341 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 342 JOIN(t, &av);
605e5515 343 SvREFCNT_dec((SV*)av);
bf49b057 344 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 345 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 346 goto retry_cleanup;
c7848ba1 347 case THRf_R_JOINABLE:
bf49b057 348 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 349 "perl_destruct: detaching thread %p\n", t));
350 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 351 /*
c7848ba1
MB		 352 * We unlock threads_mutex and t->mutex in the opposite order
353 * from which we locked them just so that DETACH won't
354 * deadlock if it panics. It's only a breach of good style
355 * not a bug since they are unlocks not locks.
356 */
533c011a 357 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 358 DETACH(t);
359 MUTEX_UNLOCK(&t->mutex);
8023c3ce 360 goto retry_cleanup;
c7848ba1 361 default:
bf49b057 362 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 363 "perl_destruct: ignoring %p (state %u)\n",
364 t, ThrSTATE(t)));
365 MUTEX_UNLOCK(&t->mutex);
c7848ba1 366 /* fall through and out */
33f46ff6
MB		 367 }
368 }
8023c3ce
MB		 369 /* We leave the above "Pass 1" loop with threads_mutex still locked */
370
371 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 372 while (PL_nthreads > 1)
11343788 373 {
bf49b057 374 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 375 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 376 PL_nthreads - 1));
377 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 378 }
379 /* At this point, we're the last thread */
533c011a 380 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 381 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 382 MUTEX_DESTROY(&PL_threads_mutex);
383 COND_DESTROY(&PL_nthreads_cond);
b57a092c 384 PL_nthreads--;
0f15f207 385#endif /* !defined(FAKE_THREADS) */
11343788
MB		 386#endif /* USE_THREADS */
387
3280af22 388 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 389#ifdef DEBUGGING
390 {
391 char *s;
155aba94 392 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 393 int i = atoi(s);
394 if (destruct_level < i)
395 destruct_level = i;
396 }
4633a7c4
LW		 397 }
398#endif
399
8990e307 400 LEAVE;
a0d0e21e
LW		 401 FREETMPS;
402
13621cfb 403
ff0cee69 404 /* We must account for everything. */
405
406 /* Destroy the main CV and syntax tree */
3280af22
NIS		 407 if (PL_main_root) {
408 PL_curpad = AvARRAY(PL_comppad);
409 op_free(PL_main_root);
410 PL_main_root = Nullop;
a0d0e21e 411 }
3280af22
NIS		 412 PL_curcop = &PL_compiling;
413 PL_main_start = Nullop;
414 SvREFCNT_dec(PL_main_cv);
415 PL_main_cv = Nullcv;
24d3c518 416 PL_dirty = TRUE;
ff0cee69 417
13621cfb
NIS		 418 /* Tell PerlIO we are about to tear things apart in case
419 we have layers which are using resources that should
420 be cleaned up now.
421 */
422
423 PerlIO_destruct(aTHX);
424
3280af22 425 if (PL_sv_objcount) {
a0d0e21e
LW		 426 /*
427 * Try to destruct global references. We do this first so that the
428 * destructors and destructees still exist. Some sv's might remain.
429 * Non-referenced objects are on their own.
430 */
a0d0e21e 431 sv_clean_objs();
8990e307
LW		 432 }
433
5cd24f17 434 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 435 SvREFCNT_dec(PL_warnhook);
436 PL_warnhook = Nullsv;
437 SvREFCNT_dec(PL_diehook);
438 PL_diehook = Nullsv;
5cd24f17 439
4b556e6c 440 /* call exit list functions */
3280af22 441 while (PL_exitlistlen-- > 0)
0cb96387 442 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 443
3280af22 444 Safefree(PL_exitlist);
4b556e6c 445
a0d0e21e 446 if (destruct_level == 0){
8990e307 447
a0d0e21e 448 DEBUG_P(debprofdump());
ac27b0f5 449
a0d0e21e
LW		 450 /* The exit() function will do everything that needs doing. */
451 return;
452 }
5dd60ef7 453
551a8b83
JH		 454 /* jettison our possibly duplicated environment */
455
456#ifdef USE_ENVIRON_ARRAY
457 if (environ != PL_origenviron) {
458 I32 i;
459
460 for (i = 0; environ[i]; i++)
4b420006
JH		 461 safesysfree(environ[i]);
462 /* Must use safesysfree() when working with environ. */
463 safesysfree(environ);
551a8b83
JH		 464
465 environ = PL_origenviron;
466 }
467#endif
468
5f8cb046
DM		 469#ifdef USE_ITHREADS
470 /* the syntax tree is shared between clones
471 * so op_free(PL_main_root) only ReREFCNT_dec's
472 * REGEXPs in the parent interpreter
473 * we need to manually ReREFCNT_dec for the clones
474 */
475 {
476 I32 i = AvFILLp(PL_regex_padav) + 1;
477 SV **ary = AvARRAY(PL_regex_padav);
478
479 while (i) {
480 REGEXP *re = (REGEXP *)SvIVX(ary[--i]);
481 if (re && (re->refcnt > 0)) {
482 ReREFCNT_dec(re);
483 }
484 }
485 }
486 SvREFCNT_dec(PL_regex_padav);
487 PL_regex_padav = Nullav;
488 PL_regex_pad = NULL;
489#endif
490
5f05dabc 491 /* loosen bonds of global variables */
492
3280af22
NIS		 493 if(PL_rsfp) {
494 (void)PerlIO_close(PL_rsfp);
495 PL_rsfp = Nullfp;
8ebc5c01 496 }
497
498 /* Filters for program text */
3280af22
NIS		 499 SvREFCNT_dec(PL_rsfp_filters);
500 PL_rsfp_filters = Nullav;
8ebc5c01 501
502 /* switches */
3280af22
NIS		 503 PL_preprocess = FALSE;
504 PL_minus_n = FALSE;
505 PL_minus_p = FALSE;
506 PL_minus_l = FALSE;
507 PL_minus_a = FALSE;
508 PL_minus_F = FALSE;
509 PL_doswitches = FALSE;
599cee73 510 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 511 PL_doextract = FALSE;
512 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 513 PL_unsafe = FALSE;
514
515 Safefree(PL_inplace);
516 PL_inplace = Nullch;
a7cb1f99 517 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 518
519 if (PL_e_script) {
520 SvREFCNT_dec(PL_e_script);
521 PL_e_script = Nullsv;
8ebc5c01 522 }
523
bc0a45ed
DM		 524 while (--PL_origargc >= 0) {
525 Safefree(PL_origargv[PL_origargc]);
526 }
527 Safefree(PL_origargv);
528
8ebc5c01 529 /* magical thingies */
530
7889fe52
NIS		 531 SvREFCNT_dec(PL_ofs_sv); /* $, */
532 PL_ofs_sv = Nullsv;
5f05dabc 533
7889fe52
NIS		 534 SvREFCNT_dec(PL_ors_sv); /* $\ */
535 PL_ors_sv = Nullsv;
8ebc5c01 536
3280af22
NIS		 537 SvREFCNT_dec(PL_rs); /* $/ */
538 PL_rs = Nullsv;
dc92893f 539
3280af22
NIS		 540 SvREFCNT_dec(PL_nrs); /* $/ helper */
541 PL_nrs = Nullsv;
5f05dabc 542
d33b2eba
GS		 543 PL_multiline = 0; /* $* */
544 Safefree(PL_osname); /* $^O */
545 PL_osname = Nullch;
5f05dabc 546
3280af22
NIS		 547 SvREFCNT_dec(PL_statname);
548 PL_statname = Nullsv;
549 PL_statgv = Nullgv;
5f05dabc 550
8ebc5c01 551 /* defgv, aka *_ should be taken care of elsewhere */
552
8ebc5c01 553 /* clean up after study() */
3280af22
NIS		 554 SvREFCNT_dec(PL_lastscream);
555 PL_lastscream = Nullsv;
556 Safefree(PL_screamfirst);
557 PL_screamfirst = 0;
558 Safefree(PL_screamnext);
559 PL_screamnext = 0;
8ebc5c01 560
7d5ea4e7
GS		 561 /* float buffer */
562 Safefree(PL_efloatbuf);
563 PL_efloatbuf = Nullch;
564 PL_efloatsize = 0;
565
8ebc5c01 566 /* startup and shutdown function lists */
3280af22
NIS		 567 SvREFCNT_dec(PL_beginav);
568 SvREFCNT_dec(PL_endav);
7d30b5c4 569 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 570 SvREFCNT_dec(PL_initav);
571 PL_beginav = Nullav;
572 PL_endav = Nullav;
7d30b5c4 573 PL_checkav = Nullav;
3280af22 574 PL_initav = Nullav;
5618dfe8 575
8ebc5c01 576 /* shortcuts just get cleared */
3280af22 577 PL_envgv = Nullgv;
3280af22
NIS		 578 PL_incgv = Nullgv;
579 PL_hintgv = Nullgv;
580 PL_errgv = Nullgv;
581 PL_argvgv = Nullgv;
582 PL_argvoutgv = Nullgv;
583 PL_stdingv = Nullgv;
bf49b057 584 PL_stderrgv = Nullgv;
3280af22
NIS		 585 PL_last_in_gv = Nullgv;
586 PL_replgv = Nullgv;
5c831c24 587 PL_debstash = Nullhv;
8ebc5c01 588
589 /* reset so print() ends up where we expect */
590 setdefout(Nullgv);
5c831c24 591
7a1c5554
GS		 592 SvREFCNT_dec(PL_argvout_stack);
593 PL_argvout_stack = Nullav;
8ebc5c01 594
5c831c24
GS		 595 SvREFCNT_dec(PL_modglobal);
596 PL_modglobal = Nullhv;
597 SvREFCNT_dec(PL_preambleav);
598 PL_preambleav = Nullav;
599 SvREFCNT_dec(PL_subname);
600 PL_subname = Nullsv;
601 SvREFCNT_dec(PL_linestr);
602 PL_linestr = Nullsv;
603 SvREFCNT_dec(PL_pidstatus);
604 PL_pidstatus = Nullhv;
605 SvREFCNT_dec(PL_toptarget);
606 PL_toptarget = Nullsv;
607 SvREFCNT_dec(PL_bodytarget);
608 PL_bodytarget = Nullsv;
609 PL_formtarget = Nullsv;
610
d33b2eba 611 /* free locale stuff */
b9582b6a 612#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 613 Safefree(PL_collation_name);
614 PL_collation_name = Nullch;
b9582b6a 615#endif
d33b2eba 616
b9582b6a 617#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 618 Safefree(PL_numeric_name);
619 PL_numeric_name = Nullch;
a453c169 620 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 621#endif
d33b2eba 622
5c831c24
GS		 623 /* clear utf8 character classes */
624 SvREFCNT_dec(PL_utf8_alnum);
625 SvREFCNT_dec(PL_utf8_alnumc);
626 SvREFCNT_dec(PL_utf8_ascii);
627 SvREFCNT_dec(PL_utf8_alpha);
628 SvREFCNT_dec(PL_utf8_space);
629 SvREFCNT_dec(PL_utf8_cntrl);
630 SvREFCNT_dec(PL_utf8_graph);
631 SvREFCNT_dec(PL_utf8_digit);
632 SvREFCNT_dec(PL_utf8_upper);
633 SvREFCNT_dec(PL_utf8_lower);
634 SvREFCNT_dec(PL_utf8_print);
635 SvREFCNT_dec(PL_utf8_punct);
636 SvREFCNT_dec(PL_utf8_xdigit);
637 SvREFCNT_dec(PL_utf8_mark);
638 SvREFCNT_dec(PL_utf8_toupper);
639 SvREFCNT_dec(PL_utf8_tolower);
640 PL_utf8_alnum = Nullsv;
641 PL_utf8_alnumc = Nullsv;
642 PL_utf8_ascii = Nullsv;
643 PL_utf8_alpha = Nullsv;
644 PL_utf8_space = Nullsv;
645 PL_utf8_cntrl = Nullsv;
646 PL_utf8_graph = Nullsv;
647 PL_utf8_digit = Nullsv;
648 PL_utf8_upper = Nullsv;
649 PL_utf8_lower = Nullsv;
650 PL_utf8_print = Nullsv;
651 PL_utf8_punct = Nullsv;
652 PL_utf8_xdigit = Nullsv;
653 PL_utf8_mark = Nullsv;
654 PL_utf8_toupper = Nullsv;
655 PL_utf8_totitle = Nullsv;
656 PL_utf8_tolower = Nullsv;
657
971a9dd3
GS		 658 if (!specialWARN(PL_compiling.cop_warnings))
659 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 660 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 661 if (!specialCopIO(PL_compiling.cop_io))
662 SvREFCNT_dec(PL_compiling.cop_io);
663 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 664#ifdef USE_ITHREADS
665 Safefree(CopFILE(&PL_compiling));
666 CopFILE(&PL_compiling) = Nullch;
667 Safefree(CopSTASHPV(&PL_compiling));
668#else
01724ea0 669 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 670 CopFILEGV(&PL_compiling) = Nullgv;
671 /* cop_stash is not refcounted */
01724ea0 672#endif
5c831c24 673
a0d0e21e 674 /* Prepare to destruct main symbol table. */
5f05dabc 675
3280af22
NIS		 676 hv = PL_defstash;
677 PL_defstash = 0;
a0d0e21e 678 SvREFCNT_dec(hv);
5c831c24
GS		 679 SvREFCNT_dec(PL_curstname);
680 PL_curstname = Nullsv;
a0d0e21e 681
5a844595
GS		 682 /* clear queued errors */
683 SvREFCNT_dec(PL_errors);
684 PL_errors = Nullsv;
685
a0d0e21e 686 FREETMPS;
0453d815 687 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 688 if (PL_scopestack_ix != 0)
0453d815
PM		 689 Perl_warner(aTHX_ WARN_INTERNAL,
690 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 691 (long)PL_scopestack_ix);
692 if (PL_savestack_ix != 0)
0453d815
PM		 693 Perl_warner(aTHX_ WARN_INTERNAL,
694 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 695 (long)PL_savestack_ix);
696 if (PL_tmps_floor != -1)
0453d815 697 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 698 (long)PL_tmps_floor + 1);
a0d0e21e 699 if (cxstack_ix != -1)
0453d815 700 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 701 (long)cxstack_ix + 1);
a0d0e21e 702 }
8990e307
LW		 703
704 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 705 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 706 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 707
708 /* the 2 is for PL_fdpid and PL_strtab */
709 while (PL_sv_count > 2 && sv_clean_all())
710 ;
711
d33b2eba
GS		 712 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
713 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 714 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
715 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 716
d4777f27
GS		 717 AvREAL_off(PL_fdpid); /* no surviving entries */
718 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 719 PL_fdpid = Nullav;
720
6c644e78
GS		 721#ifdef HAVE_INTERP_INTERN
722 sys_intern_clear();
723#endif
724
6e72f9df 725 /* Destruct the global string table. */
726 {
727 /* Yell and reset the HeVAL() slots that are still holding refcounts,
728 * so that sv_free() won't fail on them.
729 */
730 I32 riter;
731 I32 max;
732 HE *hent;
733 HE **array;
734
735 riter = 0;
3280af22
NIS		 736 max = HvMAX(PL_strtab);
737 array = HvARRAY(PL_strtab);
6e72f9df 738 hent = array[0];
739 for (;;) {
0453d815
PM		 740 if (hent && ckWARN_d(WARN_INTERNAL)) {
741 Perl_warner(aTHX_ WARN_INTERNAL,
742 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 743 HeVAL(hent) - Nullsv, HeKEY(hent));
744 HeVAL(hent) = Nullsv;
745 hent = HeNEXT(hent);
746 }
747 if (!hent) {
748 if (++riter > max)
749 break;
750 hent = array[riter];
751 }
752 }
753 }
3280af22 754 SvREFCNT_dec(PL_strtab);
6e72f9df 755
e652bb2f 756#ifdef USE_ITHREADS
a0739874
DM		 757 /* free the pointer table used for cloning */
758 ptr_table_free(PL_ptr_table);
53186e96 759#endif
a0739874 760
d33b2eba
GS		 761 /* free special SVs */
762
763 SvREFCNT(&PL_sv_yes) = 0;
764 sv_clear(&PL_sv_yes);
765 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 766 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 767
768 SvREFCNT(&PL_sv_no) = 0;
769 sv_clear(&PL_sv_no);
770 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 771 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 772
773 SvREFCNT(&PL_sv_undef) = 0;
774 SvREADONLY_off(&PL_sv_undef);
d33b2eba 775
0453d815
PM		 776 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
777 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 778
3280af22 779 Safefree(PL_origfilename);
3280af22 780 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 781 if (PL_reg_curpm)
782 Safefree(PL_reg_curpm);
82ba1be6 783 Safefree(PL_reg_poscache);
3280af22
NIS		 784 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
785 Safefree(PL_op_mask);
cf36064f
GS		 786 Safefree(PL_psig_ptr);
787 Safefree(PL_psig_name);
2c2666fc 788 Safefree(PL_bitcount);
ce08f86c 789 Safefree(PL_psig_pend);
6e72f9df 790 nuke_stacks();
3280af22 791 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 792
a0d0e21e 793 DEBUG_P(debprofdump());
11343788 794#ifdef USE_THREADS
5f08fbcd 795 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 796 MUTEX_DESTROY(&PL_sv_mutex);
797 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 798 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 799 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 800 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 801#ifdef EMULATE_ATOMIC_REFCOUNTS
802 MUTEX_DESTROY(&PL_svref_mutex);
803#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 804
8023c3ce 805 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 806 Safefree(SvPVX(PL_thrsv));
807 Safefree(SvANY(PL_thrsv));
808 Safefree(PL_thrsv);
809 PL_thrsv = Nullsv;
8023c3ce 810#endif /* USE_THREADS */
d33b2eba 811
e5dd39fc
AB		 812#ifdef USE_REENTRANT_API
813 Safefree(PL_reentrant_buffer->tmbuff);
814 Safefree(PL_reentrant_buffer);
815#endif
816
612f20c3
GS		 817 sv_free_arenas();
818
fc36a67e 819 /* As the absolutely last thing, free the non-arena SV for mess() */
820
3280af22 821 if (PL_mess_sv) {
9c63abab
GS		 822 /* it could have accumulated taint magic */
823 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
824 MAGIC* mg;
825 MAGIC* moremagic;
826 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
827 moremagic = mg->mg_moremagic;
14befaf4
DM		 828 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
829 && mg->mg_len >= 0)
9c63abab
GS		 830 Safefree(mg->mg_ptr);
831 Safefree(mg);
832 }
833 }
fc36a67e 834 /* we know that type >= SVt_PV */
155aba94 835 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 836 Safefree(SvPVX(PL_mess_sv));
837 Safefree(SvANY(PL_mess_sv));
838 Safefree(PL_mess_sv);
839 PL_mess_sv = Nullsv;
fc36a67e 840 }
79072805
LW		 841}
842
954c1994
GS		 843/*
844=for apidoc perl_free
845
846Releases a Perl interpreter. See L<perlembed>.
847
848=cut
849*/
850
79072805 851void
0cb96387 852perl_free(pTHXx)
79072805 853{
c5be433b 854#if defined(PERL_OBJECT)
7f0d82f7 855 PerlMem_free(this);
76e3520e 856#else
2986a63f 857# if defined(WIN32) || defined(NETWARE)
ce3e5b80 858# if defined(PERL_IMPLICIT_SYS)
2986a63f
JH		 859 #ifdef NETWARE
860 void *host = nw_internal_host;
861 #else
862 void *host = w32_internal_host;
863 #endif
864 #ifndef NETWARE
865 if (PerlProc_lasthost()) {
ce08f86c 866 PerlIO_cleanup();
2986a63f
JH		 867 }
868 #endif
7f0d82f7 869 PerlMem_free(aTHXx);
2986a63f
JH		 870 #ifdef NETWARE
871 nw5_delete_internal_host(host);
872 #else
873 win32_delete_internal_host(host);
874 #endif
ce3e5b80 875#else
ce08f86c 876 PerlIO_cleanup();
ce3e5b80
NIS		 877 PerlMem_free(aTHXx);
878#endif
1c0ca838
GS		 879# else
880 PerlMem_free(aTHXx);
881# endif
76e3520e 882#endif
79072805
LW		 883}
884
4b556e6c 885void
864dbfa3 886Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 887{
3280af22
NIS		 888 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
889 PL_exitlist[PL_exitlistlen].fn = fn;
890 PL_exitlist[PL_exitlistlen].ptr = ptr;
891 ++PL_exitlistlen;
4b556e6c
JD		 892}
893
954c1994
GS		 894/*
895=for apidoc perl_parse
896
897Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
898
899=cut
900*/
901
79072805 902int
0cb96387 903perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 904{
6224f72b 905 I32 oldscope;
6224f72b 906 int ret;
db36c5a1 907 dJMPENV;
cea2e8a9
GS		 908#ifdef USE_THREADS
909 dTHX;
910#endif
8d063cd8 911
a687059c
LW		 912#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
913#ifdef IAMSUID
914#undef IAMSUID
cea2e8a9 915 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 916setuid perl scripts securely.\n");
917#endif
918#endif
919
8f1f23e8 920#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 921 _dyld_lookup_and_bind
922 ("__environ", (unsigned long *) &environ_pointer, NULL);
923#endif /* environ */
924
3280af22 925 PL_origargc = argc;
bc0a45ed
DM		 926 {
927 /* we copy rather than point to argv
928 * since perl_clone will copy and perl_destruct
929 * has no way of knowing if we've made a copy or
930 * just point to argv
931 */
932 int i = PL_origargc;
933 New(0, PL_origargv, i+1, char*);
934 PL_origargv[i] = '\0';
935 while (i-- > 0) {
936 PL_origargv[i] = savepv(argv[i]);
937 }
938 }
939
fa6a1c44 940#ifdef USE_ENVIRON_ARRAY
3280af22 941 PL_origenviron = environ;
a0d0e21e
LW		 942#endif
943
3280af22 944 if (PL_do_undump) {
a0d0e21e
LW		 945
946 /* Come here if running an undumped a.out. */
947
3280af22
NIS		 948 PL_origfilename = savepv(argv[0]);
949 PL_do_undump = FALSE;
a0d0e21e 950 cxstack_ix = -1; /* start label stack again */
748a9306 951 init_ids();
a0d0e21e
LW		 952 init_postdump_symbols(argc,argv,env);
953 return 0;
954 }
955
3280af22
NIS		 956 if (PL_main_root) {
957 PL_curpad = AvARRAY(PL_comppad);
958 op_free(PL_main_root);
959 PL_main_root = Nullop;
ff0cee69 960 }
3280af22
NIS		 961 PL_main_start = Nullop;
962 SvREFCNT_dec(PL_main_cv);
963 PL_main_cv = Nullcv;
79072805 964
3280af22
NIS		 965 time(&PL_basetime);
966 oldscope = PL_scopestack_ix;
599cee73 967 PL_dowarn = G_WARN_OFF;
f86702cc 968
14dd3ad8
GS		 969#ifdef PERL_FLEXIBLE_EXCEPTIONS
970 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
971#else
972 JMPENV_PUSH(ret);
973#endif
6224f72b 974 switch (ret) {
312caa8e 975 case 0:
14dd3ad8
GS		 976#ifndef PERL_FLEXIBLE_EXCEPTIONS
977 parse_body(env,xsinit);
978#endif
7d30b5c4
GS		 979 if (PL_checkav)
980 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 981 ret = 0;
982 break;
6224f72b
GS		 983 case 1:
984 STATUS_ALL_FAILURE;
985 /* FALL THROUGH */
986 case 2:
987 /* my_exit() was called */
3280af22 988 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 989 LEAVE;
990 FREETMPS;
3280af22 991 PL_curstash = PL_defstash;
7d30b5c4
GS		 992 if (PL_checkav)
993 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 994 ret = STATUS_NATIVE_EXPORT;
995 break;
6224f72b 996 case 3:
bf49b057 997 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 998 ret = 1;
999 break;
6224f72b 1000 }
14dd3ad8
GS		 1001 JMPENV_POP;
1002 return ret;
1003}
1004
1005#ifdef PERL_FLEXIBLE_EXCEPTIONS
1006STATIC void *
1007S_vparse_body(pTHX_ va_list args)
1008{
1009 char **env = va_arg(args, char**);
1010 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1011
1012 return parse_body(env, xsinit);
312caa8e 1013}
14dd3ad8 1014#endif
312caa8e
CS		 1015
1016STATIC void *
14dd3ad8 1017S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1018{
312caa8e
CS		 1019 int argc = PL_origargc;
1020 char **argv = PL_origargv;
312caa8e
CS		 1021 char *scriptname = NULL;
1022 int fdscript = -1;
1023 VOL bool dosearch = FALSE;
1024 char *validarg = "";
1025 AV* comppadlist;
1026 register SV *sv;
1027 register char *s;
659ca9ea 1028 char *popts, *cddir = Nullch;
312caa8e 1029
3280af22 1030 sv_setpvn(PL_linestr,"",0);
79cb57f6 1031 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1032 SAVEFREESV(sv);
1033 init_main_stash();
54310121 1034
6224f72b
GS		 1035 for (argc--,argv++; argc > 0; argc--,argv++) {
1036 if (argv[0][0] != '-' || !argv[0][1])
1037 break;
1038#ifdef DOSUID
1039 if (*validarg)
1040 validarg = " PHOOEY ";
1041 else
1042 validarg = argv[0];
13281fa4 1043#endif
6224f72b
GS		 1044 s = argv[0]+1;
1045 reswitch:
1046 switch (*s) {
729a02f2
GS		 1047 case 'C':
1048#ifdef WIN32
c0932edc 1049 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1050 /* FALL THROUGH */
1051#endif
1d5472a9
GS		 1052#ifndef PERL_STRICT_CR
1053 case '\r':
1054#endif
6224f72b
GS		 1055 case ' ':
1056 case '0':
1057 case 'F':
1058 case 'a':
1059 case 'c':
1060 case 'd':
1061 case 'D':
1062 case 'h':
1063 case 'i':
1064 case 'l':
1065 case 'M':
1066 case 'm':
1067 case 'n':
1068 case 'p':
1069 case 's':
1070 case 'u':
1071 case 'U':
1072 case 'v':
599cee73
PM		 1073 case 'W':
1074 case 'X':
6224f72b 1075 case 'w':
155aba94 1076 if ((s = moreswitches(s)))
6224f72b
GS		 1077 goto reswitch;
1078 break;
33b78306 1079
6224f72b 1080 case 'T':
3280af22 1081 PL_tainting = TRUE;
6224f72b
GS		 1082 s++;
1083 goto reswitch;
f86702cc 1084
6224f72b 1085 case 'e':
bf4acbe4
GS		 1086#ifdef MACOS_TRADITIONAL
1087 /* ignore -e for Dev:Pseudo argument */
1088 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1089 break;
bf4acbe4 1090#endif
3280af22 1091 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1092 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1093 if (!PL_e_script) {
79cb57f6 1094 PL_e_script = newSVpvn("",0);
0cb96387 1095 filter_add(read_e_script, NULL);
6224f72b
GS		 1096 }
1097 if (*++s)
3280af22 1098 sv_catpv(PL_e_script, s);
6224f72b 1099 else if (argv[1]) {
3280af22 1100 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1101 argc--,argv++;
1102 }
1103 else
cea2e8a9 1104 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1105 sv_catpv(PL_e_script, "\n");
6224f72b 1106 break;
afe37c7d 1107
6224f72b
GS		 1108 case 'I': /* -I handled both here and in moreswitches() */
1109 forbid_setid("-I");
1110 if (!*++s && (s=argv[1]) != Nullch) {
1111 argc--,argv++;
1112 }
6224f72b 1113 if (s && *s) {
0df16ed7
GS		 1114 char *p;
1115 STRLEN len = strlen(s);
1116 p = savepvn(s, len);
9c8a64f0 1117 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1118 sv_catpvn(sv, "-I", 2);
1119 sv_catpvn(sv, p, len);
1120 sv_catpvn(sv, " ", 1);
6224f72b 1121 Safefree(p);
0df16ed7
GS		 1122 }
1123 else
a67e862a 1124 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1125 break;
1126 case 'P':
1127 forbid_setid("-P");
3280af22 1128 PL_preprocess = TRUE;
6224f72b
GS		 1129 s++;
1130 goto reswitch;
1131 case 'S':
1132 forbid_setid("-S");
1133 dosearch = TRUE;
1134 s++;
1135 goto reswitch;
1136 case 'V':
3280af22
NIS		 1137 if (!PL_preambleav)
1138 PL_preambleav = newAV();
1139 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1140 if (*++s != ':') {
3280af22 1141 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1142#ifdef VMS
6b88bc9c 1143 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1144#else
3280af22 1145 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1146#endif
3280af22 1147 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1148# ifdef DEBUGGING
3280af22 1149 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1150# endif
6224f72b 1151# ifdef MULTIPLICITY
8f872242 1152 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1153# endif
b363f7ed
GS		 1154# ifdef USE_THREADS
1155 sv_catpv(PL_Sv," USE_THREADS");
1156# endif
ac5e8965
JH		 1157# ifdef USE_ITHREADS
1158 sv_catpv(PL_Sv," USE_ITHREADS");
1159# endif
10cc9d2a
JH		 1160# ifdef USE_64_BIT_INT
1161 sv_catpv(PL_Sv," USE_64_BIT_INT");
1162# endif
1163# ifdef USE_64_BIT_ALL
1164 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1165# endif
1166# ifdef USE_LONG_DOUBLE
1167 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1168# endif
53430762
JH		 1169# ifdef USE_LARGE_FILES
1170 sv_catpv(PL_Sv," USE_LARGE_FILES");
1171# endif
ac5e8965
JH		 1172# ifdef USE_SOCKS
1173 sv_catpv(PL_Sv," USE_SOCKS");
1174# endif
b363f7ed
GS		 1175# ifdef PERL_OBJECT
1176 sv_catpv(PL_Sv," PERL_OBJECT");
1177# endif
1178# ifdef PERL_IMPLICIT_CONTEXT
1179 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1180# endif
1181# ifdef PERL_IMPLICIT_SYS
1182 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1183# endif
3280af22 1184 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1185
6224f72b
GS		 1186#if defined(LOCAL_PATCH_COUNT)
1187 if (LOCAL_PATCH_COUNT > 0) {
1188 int i;
3280af22 1189 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1190 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1191 if (PL_localpatches[i])
cea2e8a9 1192 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1193 }
1194 }
1195#endif
cea2e8a9 1196 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1197#ifdef __DATE__
1198# ifdef __TIME__
cea2e8a9 1199 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1200# else
cea2e8a9 1201 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1202# endif
1203#endif
3280af22 1204 sv_catpv(PL_Sv, "; \
6224f72b 1205$\"=\"\\n \"; \
69fcd688
JH		 1206@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1207#ifdef __CYGWIN__
1208 sv_catpv(PL_Sv,"\
1209push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1210#endif
1211 sv_catpv(PL_Sv, "\
6224f72b
GS		 1212print \" \\%ENV:\\n @env\\n\" if @env; \
1213print \" \\@INC:\\n @INC\\n\";");
1214 }
1215 else {
3280af22
NIS		 1216 PL_Sv = newSVpv("config_vars(qw(",0);
1217 sv_catpv(PL_Sv, ++s);
1218 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1219 s += strlen(s);
1220 }
3280af22 1221 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1222 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1223 goto reswitch;
1224 case 'x':
3280af22 1225 PL_doextract = TRUE;
6224f72b
GS		 1226 s++;
1227 if (*s)
f4c556ac 1228 cddir = s;
6224f72b
GS		 1229 break;
1230 case 0:
1231 break;
1232 case '-':
1233 if (!*++s || isSPACE(*s)) {
1234 argc--,argv++;
1235 goto switch_end;
1236 }
1237 /* catch use of gnu style long options */
1238 if (strEQ(s, "version")) {
1239 s = "v";
1240 goto reswitch;
1241 }
1242 if (strEQ(s, "help")) {
1243 s = "h";
1244 goto reswitch;
1245 }
1246 s--;
1247 /* FALL THROUGH */
1248 default:
cea2e8a9 1249 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1250 }
1251 }
6224f72b 1252 switch_end:
54310121 1253
f675dbe5
CB		 1254 if (
1255#ifndef SECURE_INTERNAL_GETENV
1256 !PL_tainting &&
1257#endif
659ca9ea 1258 (popts = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1259 {
659ca9ea 1260 s = savepv(popts);
74288ac8
GS		 1261 while (isSPACE(*s))
1262 s++;
1263 if (*s == '-' && *(s+1) == 'T')
1264 PL_tainting = TRUE;
1265 else {
1266 while (s && *s) {
4ea8f8fb 1267 char *d;
74288ac8
GS		 1268 while (isSPACE(*s))
1269 s++;
1270 if (*s == '-') {
1271 s++;
1272 if (isSPACE(*s))
1273 continue;
1274 }
4ea8f8fb 1275 d = s;
74288ac8
GS		 1276 if (!*s)
1277 break;
1278 if (!strchr("DIMUdmw", *s))
cea2e8a9 1279 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1280 while (++s && *s) {
1281 if (isSPACE(*s)) {
1282 *s++ = '\0';
1283 break;
1284 }
1285 }
1286 moreswitches(d);
6224f72b 1287 }
6224f72b
GS		 1288 }
1289 }
a0d0e21e 1290
6224f72b
GS		 1291 if (!scriptname)
1292 scriptname = argv[0];
3280af22 1293 if (PL_e_script) {
6224f72b
GS		 1294 argc++,argv--;
1295 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1296 }
1297 else if (scriptname == Nullch) {
1298#ifdef MSDOS
1299 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1300 moreswitches("h");
1301#endif
1302 scriptname = "-";
1303 }
1304
1305 init_perllib();
1306
1307 open_script(scriptname,dosearch,sv,&fdscript);
1308
1309 validate_suid(validarg, scriptname,fdscript);
1310
64ca3a65 1311#ifndef PERL_MICRO
0b5b802d
GS		 1312#if defined(SIGCHLD) || defined(SIGCLD)
1313 {
1314#ifndef SIGCHLD
1315# define SIGCHLD SIGCLD
1316#endif
1317 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1318 if (sigstate == SIG_IGN) {
1319 if (ckWARN(WARN_SIGNAL))
1320 Perl_warner(aTHX_ WARN_SIGNAL,
1321 "Can't ignore signal CHLD, forcing to default");
1322 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1323 }
1324 }
1325#endif
64ca3a65 1326#endif
0b5b802d 1327
bf4acbe4
GS		 1328#ifdef MACOS_TRADITIONAL
1329 if (PL_doextract || gMacPerl_AlwaysExtract) {
1330#else
f4c556ac 1331 if (PL_doextract) {
bf4acbe4 1332#endif
6224f72b 1333 find_beginning();
f4c556ac
GS		 1334 if (cddir && PerlDir_chdir(cddir) < 0)
1335 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1336
1337 }
6224f72b 1338
3280af22
NIS		 1339 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1340 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1341 CvUNIQUE_on(PL_compcv);
1342
1343 PL_comppad = newAV();
1344 av_push(PL_comppad, Nullsv);
1345 PL_curpad = AvARRAY(PL_comppad);
1346 PL_comppad_name = newAV();
1347 PL_comppad_name_fill = 0;
1348 PL_min_intro_pending = 0;
1349 PL_padix = 0;
6224f72b 1350#ifdef USE_THREADS
79cb57f6 1351 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1352 PL_curpad[0] = (SV*)newAV();
1353 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1354 CvOWNER(PL_compcv) = 0;
1355 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1356 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1357#endif /* USE_THREADS */
1358
1359 comppadlist = newAV();
1360 AvREAL_off(comppadlist);
3280af22
NIS		 1361 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1362 av_store(comppadlist, 1, (SV*)PL_comppad);
1363 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1364
0c4f7ff0 1365 boot_core_PerlIO();
6224f72b 1366 boot_core_UNIVERSAL();
9a34ef1d 1367#ifndef PERL_MICRO
09bef843 1368 boot_core_xsutils();
9a34ef1d 1369#endif
6224f72b
GS		 1370
1371 if (xsinit)
0cb96387 1372 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
64ca3a65 1373#ifndef PERL_MICRO
ed79a026 1374#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1375 init_os_extras();
6224f72b 1376#endif
64ca3a65 1377#endif
6224f72b 1378
29209bc5 1379#ifdef USE_SOCKS
1b9c9cf5
DH		 1380# ifdef HAS_SOCKS5_INIT
1381 socks5_init(argv[0]);
1382# else
29209bc5 1383 SOCKSinit(argv[0]);
1b9c9cf5 1384# endif
ac27b0f5 1385#endif
29209bc5 1386
6224f72b
GS		 1387 init_predump_symbols();
1388 /* init_postdump_symbols not currently designed to be called */
1389 /* more than once (ENV isn't cleared first, for example) */
1390 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1391 if (!PL_do_undump)
6224f72b
GS		 1392 init_postdump_symbols(argc,argv,env);
1393
1394 init_lexer();
1395
1396 /* now parse the script */
1397
1398 SETERRNO(0,SS$_NORMAL);
3280af22 1399 PL_error_count = 0;
bf4acbe4
GS		 1400#ifdef MACOS_TRADITIONAL
1401 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1402 if (PL_minus_c)
1403 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1404 else {
1405 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1406 MacPerl_MPWFileName(PL_origfilename));
1407 }
1408 }
1409#else
3280af22
NIS		 1410 if (yyparse() || PL_error_count) {
1411 if (PL_minus_c)
cea2e8a9 1412 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1413 else {
cea2e8a9 1414 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1415 PL_origfilename);
6224f72b
GS		 1416 }
1417 }
bf4acbe4 1418#endif
57843af0 1419 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1420 PL_curstash = PL_defstash;
1421 PL_preprocess = FALSE;
1422 if (PL_e_script) {
1423 SvREFCNT_dec(PL_e_script);
1424 PL_e_script = Nullsv;
6224f72b
GS		 1425 }
1426
1427 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1428 SvREFCNT_dec(PL_rs);
1429 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1430 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1431 if (PL_do_undump)
6224f72b
GS		 1432 my_unexec();
1433
57843af0
GS		 1434 if (isWARN_ONCE) {
1435 SAVECOPFILE(PL_curcop);
1436 SAVECOPLINE(PL_curcop);
3280af22 1437 gv_check(PL_defstash);
57843af0 1438 }
6224f72b
GS		 1439
1440 LEAVE;
1441 FREETMPS;
1442
1443#ifdef MYMALLOC
1444 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1445 dump_mstats("after compilation:");
1446#endif
1447
1448 ENTER;
3280af22 1449 PL_restartop = 0;
312caa8e 1450 return NULL;
6224f72b
GS		 1451}
1452
954c1994
GS		 1453/*
1454=for apidoc perl_run
1455
1456Tells a Perl interpreter to run. See L<perlembed>.
1457
1458=cut
1459*/
1460
6224f72b 1461int
0cb96387 1462perl_run(pTHXx)
6224f72b 1463{
6224f72b 1464 I32 oldscope;
14dd3ad8 1465 int ret = 0;
db36c5a1 1466 dJMPENV;
cea2e8a9
GS		 1467#ifdef USE_THREADS
1468 dTHX;
1469#endif
6224f72b 1470
3280af22 1471 oldscope = PL_scopestack_ix;
6224f72b 1472
14dd3ad8 1473#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1474 redo_body:
14dd3ad8
GS		 1475 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1476#else
1477 JMPENV_PUSH(ret);
1478#endif
6224f72b
GS		 1479 switch (ret) {
1480 case 1:
1481 cxstack_ix = -1; /* start context stack again */
312caa8e 1482 goto redo_body;
14dd3ad8
GS		 1483 case 0: /* normal completion */
1484#ifndef PERL_FLEXIBLE_EXCEPTIONS
1485 redo_body:
1486 run_body(oldscope);
1487#endif
1488 /* FALL THROUGH */
1489 case 2: /* my_exit() */
3280af22 1490 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1491 LEAVE;
1492 FREETMPS;
3280af22 1493 PL_curstash = PL_defstash;
865be832 1494 if (PL_endav && !PL_minus_c)
3280af22 1495 call_list(oldscope, PL_endav);
6224f72b
GS		 1496#ifdef MYMALLOC
1497 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1498 dump_mstats("after execution: ");
1499#endif
14dd3ad8
GS		 1500 ret = STATUS_NATIVE_EXPORT;
1501 break;
6224f72b 1502 case 3:
312caa8e
CS		 1503 if (PL_restartop) {
1504 POPSTACK_TO(PL_mainstack);
1505 goto redo_body;
6224f72b 1506 }
bf49b057 1507 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1508 FREETMPS;
14dd3ad8
GS		 1509 ret = 1;
1510 break;
6224f72b
GS		 1511 }
1512
14dd3ad8
GS		 1513 JMPENV_POP;
1514 return ret;
312caa8e
CS		 1515}
1516
14dd3ad8 1517#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1518STATIC void *
14dd3ad8 1519S_vrun_body(pTHX_ va_list args)
312caa8e 1520{
312caa8e
CS		 1521 I32 oldscope = va_arg(args, I32);
1522
14dd3ad8
GS		 1523 return run_body(oldscope);
1524}
1525#endif
1526
1527
1528STATIC void *
1529S_run_body(pTHX_ I32 oldscope)
1530{
6224f72b 1531 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1532 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1533
3280af22 1534 if (!PL_restartop) {
6224f72b
GS		 1535 DEBUG_x(dump_all());
1536 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1537 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1538 PTR2UV(thr)));
6224f72b 1539
3280af22 1540 if (PL_minus_c) {
bf4acbe4
GS		 1541#ifdef MACOS_TRADITIONAL
1542 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1543#else
bf49b057 1544 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1545#endif
6224f72b
GS		 1546 my_exit(0);
1547 }
3280af22 1548 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1549 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1550 if (PL_initav)
1551 call_list(oldscope, PL_initav);
6224f72b
GS		 1552 }
1553
1554 /* do it */
1555
3280af22 1556 if (PL_restartop) {
533c011a 1557 PL_op = PL_restartop;
3280af22 1558 PL_restartop = 0;
cea2e8a9 1559 CALLRUNOPS(aTHX);
6224f72b 1560 }
3280af22
NIS		 1561 else if (PL_main_start) {
1562 CvDEPTH(PL_main_cv) = 1;
533c011a 1563 PL_op = PL_main_start;
cea2e8a9 1564 CALLRUNOPS(aTHX);
6224f72b
GS		 1565 }
1566
f6b3007c
JH		 1567 my_exit(0);
1568 /* NOTREACHED */
312caa8e 1569 return NULL;
6224f72b
GS		 1570}
1571
954c1994
GS		 1572/*
1573=for apidoc p||get_sv
1574
1575Returns the SV of the specified Perl scalar. If C<create> is set and the
1576Perl variable does not exist then it will be created. If C<create> is not
1577set and the variable does not exist then NULL is returned.
1578
1579=cut
1580*/
1581
6224f72b 1582SV*
864dbfa3 1583Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1584{
1585 GV *gv;
1586#ifdef USE_THREADS
1587 if (name[1] == '\0' && !isALPHA(name[0])) {
1588 PADOFFSET tmp = find_threadsv(name);
411caa50 1589 if (tmp != NOT_IN_PAD)
6224f72b 1590 return THREADSV(tmp);
6224f72b
GS		 1591 }
1592#endif /* USE_THREADS */
1593 gv = gv_fetchpv(name, create, SVt_PV);
1594 if (gv)
1595 return GvSV(gv);
1596 return Nullsv;
1597}
1598
954c1994
GS		 1599/*
1600=for apidoc p||get_av
1601
1602Returns the AV of the specified Perl array. If C<create> is set and the
1603Perl variable does not exist then it will be created. If C<create> is not
1604set and the variable does not exist then NULL is returned.
1605
1606=cut
1607*/
1608
6224f72b 1609AV*
864dbfa3 1610Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1611{
1612 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1613 if (create)
1614 return GvAVn(gv);
1615 if (gv)
1616 return GvAV(gv);
1617 return Nullav;
1618}
1619
954c1994
GS		 1620/*
1621=for apidoc p||get_hv
1622
1623Returns the HV of the specified Perl hash. If C<create> is set and the
1624Perl variable does not exist then it will be created. If C<create> is not
1625set and the variable does not exist then NULL is returned.
1626
1627=cut
1628*/
1629
6224f72b 1630HV*
864dbfa3 1631Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1632{
a0d0e21e
LW		 1633 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1634 if (create)
1635 return GvHVn(gv);
1636 if (gv)
1637 return GvHV(gv);
1638 return Nullhv;
1639}
1640
954c1994
GS		 1641/*
1642=for apidoc p||get_cv
1643
1644Returns the CV of the specified Perl subroutine. If C<create> is set and
1645the Perl subroutine does not exist then it will be declared (which has the
1646same effect as saying C<sub name;>). If C<create> is not set and the
1647subroutine does not exist then NULL is returned.
1648
1649=cut
1650*/
1651
a0d0e21e 1652CV*
864dbfa3 1653Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1654{
1655 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1656 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1657 /* XXX this is probably not what they think they're getting.
1658 * It has the same effect as "sub name;", i.e. just a forward
1659 * declaration! */
8ebc5c01 1660 if (create && !GvCVu(gv))
774d564b 1661 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1662 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1663 Nullop,
a0d0e21e
LW		 1664 Nullop);
1665 if (gv)
8ebc5c01 1666 return GvCVu(gv);
a0d0e21e
LW		 1667 return Nullcv;
1668}
1669
79072805
LW		 1670/* Be sure to refetch the stack pointer after calling these routines. */
1671
954c1994
GS		 1672/*
1673=for apidoc p||call_argv
1674
1675Performs a callback to the specified Perl sub. See L<perlcall>.
1676
1677=cut
1678*/
1679
a0d0e21e 1680I32
864dbfa3 1681Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1682
8ac85365
NIS		 1683 /* See G_* flags in cop.h */
1684 /* null terminated arg list */
8990e307 1685{
a0d0e21e 1686 dSP;
8990e307 1687
924508f0 1688 PUSHMARK(SP);
a0d0e21e 1689 if (argv) {
8990e307 1690 while (*argv) {
a0d0e21e 1691 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1692 argv++;
1693 }
a0d0e21e 1694 PUTBACK;
8990e307 1695 }
864dbfa3 1696 return call_pv(sub_name, flags);
8990e307
LW		 1697}
1698
954c1994
GS		 1699/*
1700=for apidoc p||call_pv
1701
1702Performs a callback to the specified Perl sub. See L<perlcall>.
1703
1704=cut
1705*/
1706
a0d0e21e 1707I32
864dbfa3 1708Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1709 /* name of the subroutine */
1710 /* See G_* flags in cop.h */
a0d0e21e 1711{
864dbfa3 1712 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1713}
1714
954c1994
GS		 1715/*
1716=for apidoc p||call_method
1717
1718Performs a callback to the specified Perl method. The blessed object must
1719be on the stack. See L<perlcall>.
1720
1721=cut
1722*/
1723
a0d0e21e 1724I32
864dbfa3 1725Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1726 /* name of the subroutine */
1727 /* See G_* flags in cop.h */
a0d0e21e 1728{
968b3946 1729 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1730}
1731
1732/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1733/*
1734=for apidoc p||call_sv
1735
1736Performs a callback to the Perl sub whose name is in the SV. See
1737L<perlcall>.
1738
1739=cut
1740*/
1741
a0d0e21e 1742I32
864dbfa3 1743Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1744 /* See G_* flags in cop.h */
a0d0e21e 1745{
924508f0 1746 dSP;
a0d0e21e 1747 LOGOP myop; /* fake syntax tree node */
968b3946 1748 UNOP method_op;
aa689395 1749 I32 oldmark;
13689cfe 1750 volatile I32 retval = 0;
a0d0e21e 1751 I32 oldscope;
54310121 1752 bool oldcatch = CATCH_GET;
6224f72b 1753 int ret;
533c011a 1754 OP* oldop = PL_op;
db36c5a1 1755 dJMPENV;
1e422769 1756
a0d0e21e
LW		 1757 if (flags & G_DISCARD) {
1758 ENTER;
1759 SAVETMPS;
1760 }
1761
aa689395 1762 Zero(&myop, 1, LOGOP);
54310121 1763 myop.op_next = Nullop;
f51d4af5 1764 if (!(flags & G_NOARGS))
aa689395 1765 myop.op_flags |= OPf_STACKED;
54310121 1766 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1767 (flags & G_ARRAY) ? OPf_WANT_LIST :
1768 OPf_WANT_SCALAR);
462e5cf6 1769 SAVEOP();
533c011a 1770 PL_op = (OP*)&myop;
aa689395 1771
3280af22
NIS		 1772 EXTEND(PL_stack_sp, 1);
1773 *++PL_stack_sp = sv;
aa689395 1774 oldmark = TOPMARK;
3280af22 1775 oldscope = PL_scopestack_ix;
a0d0e21e 1776
3280af22 1777 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1778 /* Handle first BEGIN of -d. */
3280af22 1779 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1780 /* Try harder, since this may have been a sighandler, thus
1781 * curstash may be meaningless. */
3280af22 1782 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1783 && !(flags & G_NODEBUG))
533c011a 1784 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1785
968b3946
GS		 1786 if (flags & G_METHOD) {
1787 Zero(&method_op, 1, UNOP);
1788 method_op.op_next = PL_op;
1789 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1790 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1791 PL_op = (OP*)&method_op;
968b3946
GS		 1792 }
1793
312caa8e 1794 if (!(flags & G_EVAL)) {
0cdb2077 1795 CATCH_SET(TRUE);
14dd3ad8 1796 call_body((OP*)&myop, FALSE);
312caa8e 1797 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1798 CATCH_SET(oldcatch);
312caa8e
CS		 1799 }
1800 else {
d78bda3d 1801 myop.op_other = (OP*)&myop;
3280af22 1802 PL_markstack_ptr--;
4633a7c4
LW		 1803 /* we're trying to emulate pp_entertry() here */
1804 {
c09156bb 1805 register PERL_CONTEXT *cx;
54310121 1806 I32 gimme = GIMME_V;
ac27b0f5 1807
4633a7c4
LW		 1808 ENTER;
1809 SAVETMPS;
ac27b0f5 1810
968b3946 1811 push_return(Nullop);
1d76a5c3 1812 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1813 PUSHEVAL(cx, 0, 0);
533c011a 1814 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1815
faef0170 1816 PL_in_eval = EVAL_INEVAL;
4633a7c4 1817 if (flags & G_KEEPERR)
faef0170 1818 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1819 else
38a03e6e 1820 sv_setpv(ERRSV,"");
4633a7c4 1821 }
3280af22 1822 PL_markstack_ptr++;
a0d0e21e 1823
14dd3ad8
GS		 1824#ifdef PERL_FLEXIBLE_EXCEPTIONS
1825 redo_body:
1826 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1827 (OP*)&myop, FALSE);
14dd3ad8
GS		 1828#else
1829 JMPENV_PUSH(ret);
1830#endif
6224f72b
GS		 1831 switch (ret) {
1832 case 0:
14dd3ad8
GS		 1833#ifndef PERL_FLEXIBLE_EXCEPTIONS
1834 redo_body:
1835 call_body((OP*)&myop, FALSE);
1836#endif
312caa8e
CS		 1837 retval = PL_stack_sp - (PL_stack_base + oldmark);
1838 if (!(flags & G_KEEPERR))
1839 sv_setpv(ERRSV,"");
a0d0e21e 1840 break;
6224f72b 1841 case 1:
f86702cc 1842 STATUS_ALL_FAILURE;
a0d0e21e 1843 /* FALL THROUGH */
6224f72b 1844 case 2:
a0d0e21e 1845 /* my_exit() was called */
3280af22 1846 PL_curstash = PL_defstash;
a0d0e21e 1847 FREETMPS;
14dd3ad8 1848 JMPENV_POP;
cc3604b1 1849 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1850 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1851 my_exit_jump();
a0d0e21e 1852 /* NOTREACHED */
6224f72b 1853 case 3:
3280af22 1854 if (PL_restartop) {
533c011a 1855 PL_op = PL_restartop;
3280af22 1856 PL_restartop = 0;
312caa8e 1857 goto redo_body;
a0d0e21e 1858 }
3280af22 1859 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1860 if (flags & G_ARRAY)
1861 retval = 0;
1862 else {
1863 retval = 1;
3280af22 1864 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1865 }
312caa8e 1866 break;
a0d0e21e 1867 }
a0d0e21e 1868
3280af22 1869 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1870 SV **newsp;
1871 PMOP *newpm;
1872 I32 gimme;
c09156bb 1873 register PERL_CONTEXT *cx;
a0a2876f
LW		 1874 I32 optype;
1875
1876 POPBLOCK(cx,newpm);
1877 POPEVAL(cx);
1878 pop_return();
3280af22 1879 PL_curpm = newpm;
a0a2876f 1880 LEAVE;
a0d0e21e 1881 }
14dd3ad8 1882 JMPENV_POP;
a0d0e21e 1883 }
1e422769 1884
a0d0e21e 1885 if (flags & G_DISCARD) {
3280af22 1886 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1887 retval = 0;
1888 FREETMPS;
1889 LEAVE;
1890 }
533c011a 1891 PL_op = oldop;
a0d0e21e
LW		 1892 return retval;
1893}
1894
14dd3ad8 1895#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1896STATIC void *
14dd3ad8 1897S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1898{
1899 OP *myop = va_arg(args, OP*);
1900 int is_eval = va_arg(args, int);
1901
14dd3ad8 1902 call_body(myop, is_eval);
312caa8e
CS		 1903 return NULL;
1904}
14dd3ad8 1905#endif
312caa8e
CS		 1906
1907STATIC void
14dd3ad8 1908S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1909{
312caa8e
CS		 1910 if (PL_op == myop) {
1911 if (is_eval)
f807eda9 1912 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1913 else
f807eda9 1914 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1915 }
1916 if (PL_op)
cea2e8a9 1917 CALLRUNOPS(aTHX);
312caa8e
CS		 1918}
1919
6e72f9df 1920/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1921
954c1994
GS		 1922/*
1923=for apidoc p||eval_sv
1924
1925Tells Perl to C<eval> the string in the SV.
1926
1927=cut
1928*/
1929
a0d0e21e 1930I32
864dbfa3 1931Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1932
8ac85365 1933 /* See G_* flags in cop.h */
a0d0e21e 1934{
924508f0 1935 dSP;
a0d0e21e 1936 UNOP myop; /* fake syntax tree node */
8fa7f367 1937 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1938 volatile I32 retval = 0;
4633a7c4 1939 I32 oldscope;
6224f72b 1940 int ret;
533c011a 1941 OP* oldop = PL_op;
db36c5a1 1942 dJMPENV;
84902520 1943
4633a7c4
LW		 1944 if (flags & G_DISCARD) {
1945 ENTER;
1946 SAVETMPS;
1947 }
1948
462e5cf6 1949 SAVEOP();
533c011a
NIS		 1950 PL_op = (OP*)&myop;
1951 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1952 EXTEND(PL_stack_sp, 1);
1953 *++PL_stack_sp = sv;
1954 oldscope = PL_scopestack_ix;
79072805 1955
4633a7c4
LW		 1956 if (!(flags & G_NOARGS))
1957 myop.op_flags = OPf_STACKED;
79072805 1958 myop.op_next = Nullop;
6e72f9df 1959 myop.op_type = OP_ENTEREVAL;
54310121 1960 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1961 (flags & G_ARRAY) ? OPf_WANT_LIST :
1962 OPf_WANT_SCALAR);
6e72f9df 1963 if (flags & G_KEEPERR)
1964 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1965
14dd3ad8 1966#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1967 redo_body:
14dd3ad8 1968 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1969 (OP*)&myop, TRUE);
14dd3ad8
GS		 1970#else
1971 JMPENV_PUSH(ret);
1972#endif
6224f72b
GS		 1973 switch (ret) {
1974 case 0:
14dd3ad8
GS		 1975#ifndef PERL_FLEXIBLE_EXCEPTIONS
1976 redo_body:
1977 call_body((OP*)&myop,TRUE);
1978#endif
312caa8e
CS		 1979 retval = PL_stack_sp - (PL_stack_base + oldmark);
1980 if (!(flags & G_KEEPERR))
1981 sv_setpv(ERRSV,"");
4633a7c4 1982 break;
6224f72b 1983 case 1:
f86702cc 1984 STATUS_ALL_FAILURE;
4633a7c4 1985 /* FALL THROUGH */
6224f72b 1986 case 2:
4633a7c4 1987 /* my_exit() was called */
3280af22 1988 PL_curstash = PL_defstash;
4633a7c4 1989 FREETMPS;
14dd3ad8 1990 JMPENV_POP;
cc3604b1 1991 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1992 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1993 my_exit_jump();
4633a7c4 1994 /* NOTREACHED */
6224f72b 1995 case 3:
3280af22 1996 if (PL_restartop) {
533c011a 1997 PL_op = PL_restartop;
3280af22 1998 PL_restartop = 0;
312caa8e 1999 goto redo_body;
4633a7c4 2000 }
3280af22 2001 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2002 if (flags & G_ARRAY)
2003 retval = 0;
2004 else {
2005 retval = 1;
3280af22 2006 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2007 }
312caa8e 2008 break;
4633a7c4
LW		 2009 }
2010
14dd3ad8 2011 JMPENV_POP;
4633a7c4 2012 if (flags & G_DISCARD) {
3280af22 2013 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2014 retval = 0;
2015 FREETMPS;
2016 LEAVE;
2017 }
533c011a 2018 PL_op = oldop;
4633a7c4
LW		 2019 return retval;
2020}
2021
954c1994
GS		 2022/*
2023=for apidoc p||eval_pv
2024
2025Tells Perl to C<eval> the given string and return an SV* result.
2026
2027=cut
2028*/
2029
137443ea 2030SV*
864dbfa3 2031Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2032{
2033 dSP;
2034 SV* sv = newSVpv(p, 0);
2035
864dbfa3 2036 eval_sv(sv, G_SCALAR);
137443ea 2037 SvREFCNT_dec(sv);
2038
2039 SPAGAIN;
2040 sv = POPs;
2041 PUTBACK;
2042
2d8e6c8d
GS		 2043 if (croak_on_error && SvTRUE(ERRSV)) {
2044 STRLEN n_a;
cea2e8a9 2045 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2046 }
137443ea 2047
2048 return sv;
2049}
2050
4633a7c4
LW		 2051/* Require a module. */
2052
954c1994
GS		 2053/*
2054=for apidoc p||require_pv
2055
7d3fb230
BS		 2056Tells Perl to C<require> the file named by the string argument. It is
2057analogous to the Perl code C<eval "require '$file'">. It's even
2058implemented that way; consider using Perl_load_module instead.
954c1994 2059
7d3fb230 2060=cut */
954c1994 2061
4633a7c4 2062void
864dbfa3 2063Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2064{
d3acc0f7
JP		 2065 SV* sv;
2066 dSP;
e788e7d3 2067 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2068 PUTBACK;
2069 sv = sv_newmortal();
4633a7c4
LW		 2070 sv_setpv(sv, "require '");
2071 sv_catpv(sv, pv);
2072 sv_catpv(sv, "'");
864dbfa3 2073 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2074 SPAGAIN;
2075 POPSTACK;
79072805
LW		 2076}
2077
79072805 2078void
864dbfa3 2079Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2080{
2081 register GV *gv;
2082
155aba94 2083 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2084 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2085}
2086
76e3520e 2087STATIC void
cea2e8a9 2088S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2089{
ab821d7f 2090 /* This message really ought to be max 23 lines.
75c72d73 2091 * Removed -h because the user already knows that option. Others? */
fb73857a 2092
76e3520e 2093 static char *usage_msg[] = {
fb73857a 2094"-0[octal] specify record separator (\\0, if no argument)",
2095"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2096"-C enable native wide character system interfaces",
1950ee41 2097"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2098"-d[:debugger] run program under debugger",
2099"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2100"-e 'command' one line of program (several -e's allowed, omit programfile)",
2101"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2102"-i[extension] edit <> files in place (makes backup if extension supplied)",
2103"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2104"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2105"-[mM][-]module execute `use/no module...' before executing program",
2106"-n assume 'while (<>) { ... }' loop around program",
2107"-p assume loop like -n but print line also, like sed",
2108"-P run program through C preprocessor before compilation",
2109"-s enable rudimentary parsing for switches after programfile",
2110"-S look for programfile using PATH environment variable",
2111"-T enable tainting checks",
2112"-u dump core after parsing program",
fb73857a 2113"-U allow unsafe operations",
aac3bd0d
GS		 2114"-v print version, subversion (includes VERY IMPORTANT perl info)",
2115"-V[:variable] print configuration summary (or a single Config.pm variable)",
2116"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2117"-W enable all warnings",
2118"-X disable all warnings",
fb73857a 2119"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2120"\n",
2121NULL
2122};
76e3520e 2123 char **p = usage_msg;
fb73857a 2124
b0e47665
GS		 2125 PerlIO_printf(PerlIO_stdout(),
2126 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2127 name);
fb73857a 2128 while (*p)
b0e47665 2129 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2130}
2131
79072805
LW		 2132/* This routine handles any switches that can be given during run */
2133
2134char *
864dbfa3 2135Perl_moreswitches(pTHX_ char *s)
79072805 2136{
ba210ebe 2137 STRLEN numlen;
c07a80fd 2138 U32 rschar;
79072805
LW		 2139
2140 switch (*s) {
2141 case '0':
a863c7d1 2142 {
b21ed0a9 2143 numlen = 0; /* disallow underscores */
dff6d3cd 2144 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2145 SvREFCNT_dec(PL_nrs);
c07a80fd 2146 if (rschar & ~((U8)~0))
3280af22 2147 PL_nrs = &PL_sv_undef;
c07a80fd 2148 else if (!rschar && numlen >= 2)
79cb57f6 2149 PL_nrs = newSVpvn("", 0);
c07a80fd 2150 else {
2151 char ch = rschar;
79cb57f6 2152 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2153 }
2154 return s + numlen;
a863c7d1 2155 }
46487f74
GS		 2156 case 'C':
2157 PL_widesyscalls = TRUE;
2158 s++;
2159 return s;
2304df62 2160 case 'F':
3280af22
NIS		 2161 PL_minus_F = TRUE;
2162 PL_splitstr = savepv(s + 1);
2304df62
AD		 2163 s += strlen(s);
2164 return s;
79072805 2165 case 'a':
3280af22 2166 PL_minus_a = TRUE;
79072805
LW		 2167 s++;
2168 return s;
2169 case 'c':
3280af22 2170 PL_minus_c = TRUE;
79072805
LW		 2171 s++;
2172 return s;
2173 case 'd':
bbce6d69 2174 forbid_setid("-d");
4633a7c4 2175 s++;
70c94a19
RR		 2176 /* The following permits -d:Mod to accepts arguments following an =
2177 in the fashion that -MSome::Mod does. */
2178 if (*s == ':' || *s == '=') {
2179 char *start;
2180 SV *sv;
2181 sv = newSVpv("use Devel::", 0);
2182 start = ++s;
2183 /* We now allow -d:Module=Foo,Bar */
2184 while(isALNUM(*s) || *s==':') ++s;
2185 if (*s != '=')
2186 sv_catpv(sv, start);
2187 else {
2188 sv_catpvn(sv, start, s-start);
2189 sv_catpv(sv, " split(/,/,q{");
2190 sv_catpv(sv, ++s);
2191 sv_catpv(sv, "})");
2192 }
4633a7c4 2193 s += strlen(s);
70c94a19 2194 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2195 }
ed094faf 2196 if (!PL_perldb) {
3280af22 2197 PL_perldb = PERLDB_ALL;
a0d0e21e 2198 init_debugger();
ed094faf 2199 }
79072805
LW		 2200 return s;
2201 case 'D':
0453d815 2202 {
79072805 2203#ifdef DEBUGGING
bbce6d69 2204 forbid_setid("-D");
79072805 2205 if (isALPHA(s[1])) {
04932ac8
DM		 2206 /* if adding extra options, remember to update DEBUG_MASK */
2207 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2208 char *d;
2209
93a17b20 2210 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2211 PL_debug |= 1 << (d - debopts);
79072805
LW		 2212 }
2213 else {
3280af22 2214 PL_debug = atoi(s+1);
79072805
LW		 2215 for (s++; isDIGIT(*s); s++) ;
2216 }
aea4f609 2217 PL_debug |= DEBUG_TOP_FLAG;
79072805 2218#else
0453d815
PM		 2219 if (ckWARN_d(WARN_DEBUGGING))
2220 Perl_warner(aTHX_ WARN_DEBUGGING,
2221 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2222 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2223#endif
2224 /*SUPPRESS 530*/
2225 return s;
0453d815 2226 }
4633a7c4 2227 case 'h':
ac27b0f5 2228 usage(PL_origargv[0]);
6ad3d225 2229 PerlProc_exit(0);
79072805 2230 case 'i':
3280af22
NIS		 2231 if (PL_inplace)
2232 Safefree(PL_inplace);
2233 PL_inplace = savepv(s+1);
79072805 2234 /*SUPPRESS 530*/
3280af22 2235 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2236 if (*s) {
fb73857a 2237 *s++ = '\0';
7b8d334a
GS		 2238 if (*s == '-') /* Additional switches on #! line. */
2239 s++;
2240 }
fb73857a 2241 return s;
2242 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2243 forbid_setid("-I");
fb73857a 2244 ++s;
2245 while (*s && isSPACE(*s))
2246 ++s;
2247 if (*s) {
774d564b 2248 char *e, *p;
0df16ed7
GS		 2249 p = s;
2250 /* ignore trailing spaces (possibly followed by other switches) */
2251 do {
2252 for (e = p; *e && !isSPACE(*e); e++) ;
2253 p = e;
2254 while (isSPACE(*p))
2255 p++;
2256 } while (*p && *p != '-');
2257 e = savepvn(s, e-s);
9c8a64f0 2258 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2259 Safefree(e);
2260 s = p;
2261 if (*s == '-')
2262 s++;
79072805
LW		 2263 }
2264 else
a67e862a 2265 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2266 return s;
79072805 2267 case 'l':
3280af22 2268 PL_minus_l = TRUE;
79072805 2269 s++;
7889fe52
NIS		 2270 if (PL_ors_sv) {
2271 SvREFCNT_dec(PL_ors_sv);
2272 PL_ors_sv = Nullsv;
2273 }
79072805 2274 if (isDIGIT(*s)) {
7889fe52 2275 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2276 numlen = 0; /* disallow underscores */
7889fe52 2277 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2278 s += numlen;
2279 }
2280 else {
3280af22 2281 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2282 PL_ors_sv = newSVpvn("\n\n",2);
2283 }
2284 else {
2285 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2286 }
79072805
LW		 2287 }
2288 return s;
1a30305b 2289 case 'M':
bbce6d69 2290 forbid_setid("-M"); /* XXX ? */
1a30305b 2291 /* FALL THROUGH */
2292 case 'm':
bbce6d69 2293 forbid_setid("-m"); /* XXX ? */
1a30305b 2294 if (*++s) {
a5f75d66 2295 char *start;
11343788 2296 SV *sv;
a5f75d66
AD		 2297 char *use = "use ";
2298 /* -M-foo == 'no foo' */
2299 if (*s == '-') { use = "no "; ++s; }
11343788 2300 sv = newSVpv(use,0);
a5f75d66 2301 start = s;
1a30305b 2302 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2303 while(isALNUM(*s) || *s==':') ++s;
2304 if (*s != '=') {
11343788 2305 sv_catpv(sv, start);
c07a80fd 2306 if (*(start-1) == 'm') {
2307 if (*s != '\0')
cea2e8a9 2308 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2309 sv_catpv( sv, " ()");
c07a80fd 2310 }
2311 } else {
6df41af2 2312 if (s == start)
be98fb35
GS		 2313 Perl_croak(aTHX_ "Module name required with -%c option",
2314 s[-1]);
11343788
MB		 2315 sv_catpvn(sv, start, s-start);
2316 sv_catpv(sv, " split(/,/,q{");
2317 sv_catpv(sv, ++s);
2318 sv_catpv(sv, "})");
c07a80fd 2319 }
1a30305b 2320 s += strlen(s);
5c831c24 2321 if (!PL_preambleav)
3280af22
NIS		 2322 PL_preambleav = newAV();
2323 av_push(PL_preambleav, sv);
1a30305b 2324 }
2325 else
cea2e8a9 2326 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2327 return s;
79072805 2328 case 'n':
3280af22 2329 PL_minus_n = TRUE;
79072805
LW		 2330 s++;
2331 return s;
2332 case 'p':
3280af22 2333 PL_minus_p = TRUE;
79072805
LW		 2334 s++;
2335 return s;
2336 case 's':
bbce6d69 2337 forbid_setid("-s");
3280af22 2338 PL_doswitches = TRUE;
79072805
LW		 2339 s++;
2340 return s;
463ee0b2 2341 case 'T':
3280af22 2342 if (!PL_tainting)
cea2e8a9 2343 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2344 s++;
2345 return s;
79072805 2346 case 'u':
bf4acbe4
GS		 2347#ifdef MACOS_TRADITIONAL
2348 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2349#endif
3280af22 2350 PL_do_undump = TRUE;
79072805
LW		 2351 s++;
2352 return s;
2353 case 'U':
3280af22 2354 PL_unsafe = TRUE;
79072805
LW		 2355 s++;
2356 return s;
2357 case 'v':
8e9464f1 2358#if !defined(DGUX)
b0e47665 2359 PerlIO_printf(PerlIO_stdout(),
d2560b70 2360 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2361 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2362#else /* DGUX */
2363/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2364 PerlIO_printf(PerlIO_stdout(),
2365 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2366 PerlIO_printf(PerlIO_stdout(),
2367 Perl_form(aTHX_ " built under %s at %s %s\n",
2368 OSNAME, __DATE__, __TIME__));
2369 PerlIO_printf(PerlIO_stdout(),
2370 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2371 OSVERS));
8e9464f1
JH		 2372#endif /* !DGUX */
2373
fb73857a 2374#if defined(LOCAL_PATCH_COUNT)
2375 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2376 PerlIO_printf(PerlIO_stdout(),
2377 "\n(with %d registered patch%s, "
2378 "see perl -V for more detail)",
2379 (int)LOCAL_PATCH_COUNT,
2380 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2381#endif
1a30305b 2382
b0e47665 2383 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2384 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2385#ifdef MACOS_TRADITIONAL
2386 PerlIO_printf(PerlIO_stdout(),
084592ab 2387 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2388#endif
79072805 2389#ifdef MSDOS
b0e47665
GS		 2390 PerlIO_printf(PerlIO_stdout(),
2391 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2392#endif
2393#ifdef DJGPP
b0e47665
GS		 2394 PerlIO_printf(PerlIO_stdout(),
2395 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2396 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2397#endif
79072805 2398#ifdef OS2
b0e47665
GS		 2399 PerlIO_printf(PerlIO_stdout(),
2400 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2401 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2402#endif
79072805 2403#ifdef atarist
b0e47665
GS		 2404 PerlIO_printf(PerlIO_stdout(),
2405 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2406#endif
a3f9223b 2407#ifdef __BEOS__
b0e47665
GS		 2408 PerlIO_printf(PerlIO_stdout(),
2409 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2410#endif
1d84e8df 2411#ifdef MPE
b0e47665 2412 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2413 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2414#endif
9d116dd7 2415#ifdef OEMVS
b0e47665
GS		 2416 PerlIO_printf(PerlIO_stdout(),
2417 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2418#endif
495c5fdc 2419#ifdef __VOS__
b0e47665
GS		 2420 PerlIO_printf(PerlIO_stdout(),
2421 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2422#endif
092bebab 2423#ifdef __OPEN_VM
b0e47665
GS		 2424 PerlIO_printf(PerlIO_stdout(),
2425 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2426#endif
a1a0e61e 2427#ifdef POSIX_BC
b0e47665
GS		 2428 PerlIO_printf(PerlIO_stdout(),
2429 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2430#endif
61ae2fbf 2431#ifdef __MINT__
b0e47665
GS		 2432 PerlIO_printf(PerlIO_stdout(),
2433 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2434#endif
f83d2536 2435#ifdef EPOC
b0e47665
GS		 2436 PerlIO_printf(PerlIO_stdout(),
2437 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2438#endif
e1caacb4
JH		 2439#ifdef UNDER_CE
2440 printf("WINCE port by Rainer Keuchel, 2001\n");
2441 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2442 wce_hitreturn();
2443#endif
baed7233
DL		 2444#ifdef BINARY_BUILD_NOTICE
2445 BINARY_BUILD_NOTICE;
2446#endif
b0e47665
GS		 2447 PerlIO_printf(PerlIO_stdout(),
2448 "\n\
79072805 2449Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2450GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2451Complete documentation for Perl, including FAQ lists, should be found on\n\
2452this system using `man perl' or `perldoc perl'. If you have access to the\n\
2453Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2454 PerlProc_exit(0);
79072805 2455 case 'w':
599cee73 2456 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2457 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2458 s++;
2459 return s;
2460 case 'W':
ac27b0f5 2461 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2462 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2463 s++;
2464 return s;
2465 case 'X':
ac27b0f5 2466 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2467 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2468 s++;
2469 return s;
a0d0e21e 2470 case '*':
79072805
LW		 2471 case ' ':
2472 if (s[1] == '-') /* Additional switches on #! line. */
2473 return s+2;
2474 break;
a0d0e21e 2475 case '-':
79072805 2476 case 0:
51882d45 2477#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2478 case '\r':
2479#endif
79072805
LW		 2480 case '\n':
2481 case '\t':
2482 break;
aa689395 2483#ifdef ALTERNATE_SHEBANG
2484 case 'S': /* OS/2 needs -S on "extproc" line. */
2485 break;
2486#endif
a0d0e21e 2487 case 'P':
3280af22 2488 if (PL_preprocess)
a0d0e21e
LW		 2489 return s+1;
2490 /* FALL THROUGH */
79072805 2491 default:
cea2e8a9 2492 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2493 }
2494 return Nullch;
2495}
2496
2497/* compliments of Tom Christiansen */
2498
2499/* unexec() can be found in the Gnu emacs distribution */
ee580363 2500/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2501
2502void
864dbfa3 2503Perl_my_unexec(pTHX)
79072805
LW		 2504{
2505#ifdef UNEXEC
46fc3d4c 2506 SV* prog;
2507 SV* file;
ee580363 2508 int status = 1;
79072805
LW		 2509 extern int etext;
2510
ee580363 2511 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2512 sv_catpv(prog, "/perl");
6b88bc9c 2513 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2514 sv_catpv(file, ".perldump");
79072805 2515
ee580363
GS		 2516 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2517 /* unexec prints msg to stderr in case of failure */
6ad3d225 2518 PerlProc_exit(status);
79072805 2519#else
a5f75d66
AD		 2520# ifdef VMS
2521# include <lib$routines.h>
2522 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2523# else
79072805 2524 ABORT(); /* for use with undump */
aa689395 2525# endif
a5f75d66 2526#endif
79072805
LW		 2527}
2528
cb68f92d
GS		 2529/* initialize curinterp */
2530STATIC void
cea2e8a9 2531S_init_interp(pTHX)
cb68f92d
GS		 2532{
2533
066ef5b5 2534#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 2535#define I_REINIT \
6b88bc9c
GS		 2536 STMT_START { \
2537 PL_chopset = " \n-"; \
2538 PL_copline = NOLINE; \
2539 PL_curcop = &PL_compiling;\
2540 PL_curcopdb = NULL; \
2541 PL_dbargs = 0; \
3967c732 2542 PL_dumpindent = 4; \
6b88bc9c
GS		 2543 PL_laststatval = -1; \
2544 PL_laststype = OP_STAT; \
2545 PL_maxscream = -1; \
2546 PL_maxsysfd = MAXSYSFD; \
2547 PL_statname = Nullsv; \
2548 PL_tmps_floor = -1; \
2549 PL_tmps_ix = -1; \
2550 PL_op_mask = NULL; \
6b88bc9c
GS		 2551 PL_laststatval = -1; \
2552 PL_laststype = OP_STAT; \
2553 PL_mess_sv = Nullsv; \
2554 PL_splitstr = " "; \
2555 PL_generation = 100; \
2556 PL_exitlist = NULL; \
2557 PL_exitlistlen = 0; \
2558 PL_regindent = 0; \
2559 PL_in_clean_objs = FALSE; \
2560 PL_in_clean_all = FALSE; \
2561 PL_profiledata = NULL; \
2562 PL_rsfp = Nullfp; \
2563 PL_rsfp_filters = Nullav; \
24d3c518 2564 PL_dirty = FALSE; \
cb68f92d 2565 } STMT_END
9666903d 2566 I_REINIT;
066ef5b5
GS		 2567#else
2568# ifdef MULTIPLICITY
2569# define PERLVAR(var,type)
51371543 2570# define PERLVARA(var,n,type)
cea2e8a9 2571# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2572# if defined(USE_THREADS)
2573# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2574# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2575# else /* !USE_THREADS */
2576# define PERLVARI(var,type,init) aTHX->var = init;
2577# define PERLVARIC(var,type,init) aTHX->var = init;
2578# endif /* USE_THREADS */
cea2e8a9 2579# else
c5be433b
GS		 2580# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2581# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2582# endif
066ef5b5
GS		 2583# include "intrpvar.h"
2584# ifndef USE_THREADS
2585# include "thrdvar.h"
2586# endif
2587# undef PERLVAR
51371543 2588# undef PERLVARA
066ef5b5
GS		 2589# undef PERLVARI
2590# undef PERLVARIC
3967c732 2591# else
066ef5b5 2592# define PERLVAR(var,type)
51371543 2593# define PERLVARA(var,n,type)
533c011a
NIS		 2594# define PERLVARI(var,type,init) PL_##var = init;
2595# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2596# include "intrpvar.h"
2597# ifndef USE_THREADS
2598# include "thrdvar.h"
2599# endif
2600# undef PERLVAR
51371543 2601# undef PERLVARA
066ef5b5
GS		 2602# undef PERLVARI
2603# undef PERLVARIC
2604# endif
cb68f92d
GS		 2605#endif
2606
cb68f92d
GS		 2607}
2608
76e3520e 2609STATIC void
cea2e8a9 2610S_init_main_stash(pTHX)
79072805 2611{
463ee0b2 2612 GV *gv;
6e72f9df 2613
2614 /* Note that strtab is a rather special HV. Assumptions are made
2615 about not iterating on it, and not adding tie magic to it.
2616 It is properly deallocated in perl_destruct() */
3280af22 2617 PL_strtab = newHV();
5f08fbcd
GS		 2618#ifdef USE_THREADS
2619 MUTEX_INIT(&PL_strtab_mutex);
2620#endif
3280af22
NIS		 2621 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2622 hv_ksplit(PL_strtab, 512);
ac27b0f5 2623
3280af22 2624 PL_curstash = PL_defstash = newHV();
79cb57f6 2625 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2626 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2627 SvREFCNT_dec(GvHV(gv));
3280af22 2628 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2629 SvREADONLY_on(gv);
3280af22
NIS		 2630 HvNAME(PL_defstash) = savepv("main");
2631 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2632 GvMULTI_on(PL_incgv);
2633 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2634 GvMULTI_on(PL_hintgv);
2635 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2636 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2637 GvMULTI_on(PL_errgv);
2638 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2639 GvMULTI_on(PL_replgv);
cea2e8a9 2640 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2641 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2642 sv_setpvn(ERRSV, "", 0);
3280af22 2643 PL_curstash = PL_defstash;
11faa288 2644 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2645 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2646 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2647 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2648 /* We must init $/ before switches are processed. */
864dbfa3 2649 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2650}
2651
76e3520e 2652STATIC void
cea2e8a9 2653S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2654{
6c4ab083 2655 *fdscript = -1;
79072805 2656
3280af22
NIS		 2657 if (PL_e_script) {
2658 PL_origfilename = savepv("-e");
96436eeb 2659 }
6c4ab083
GS		 2660 else {
2661 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2662 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2663
2664 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2665 char *s = scriptname + 8;
2666 *fdscript = atoi(s);
2667 while (isDIGIT(*s))
2668 s++;
2669 if (*s) {
2670 scriptname = savepv(s + 1);
3280af22
NIS		 2671 Safefree(PL_origfilename);
2672 PL_origfilename = scriptname;
6c4ab083
GS		 2673 }
2674 }
2675 }
2676
f4dd75d9
GS		 2677#ifdef USE_ITHREADS
2678 Safefree(CopFILE(PL_curcop));
2679#else
2680 SvREFCNT_dec(CopFILEGV(PL_curcop));
2681#endif
57843af0 2682 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2683 if (strEQ(PL_origfilename,"-"))
79072805 2684 scriptname = "";
01f988be 2685 if (*fdscript >= 0) {
3280af22 2686 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2687#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2688 if (PL_rsfp)
2689 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2690#endif
2691 }
3280af22 2692 else if (PL_preprocess) {
46fc3d4c 2693 char *cpp_cfg = CPPSTDIN;
79cb57f6 2694 SV *cpp = newSVpvn("",0);
46fc3d4c 2695 SV *cmd = NEWSV(0,0);
2696
2697 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2698 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2699 sv_catpv(cpp, cpp_cfg);
79072805 2700
0df16ed7 2701 sv_catpvn(sv, "-I", 2);
fed7345c 2702 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2703
14953ddc
MB		 2704 DEBUG_P(PerlIO_printf(Perl_debug_log,
2705 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2706 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2707#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2708 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2709sed %s -e \"/^[^#]/b\" \
2710 -e \"/^#[ ]*include[ ]/b\" \
2711 -e \"/^#[ ]*define[ ]/b\" \
2712 -e \"/^#[ ]*if[ ]/b\" \
2713 -e \"/^#[ ]*ifdef[ ]/b\" \
2714 -e \"/^#[ ]*ifndef[ ]/b\" \
2715 -e \"/^#[ ]*else/b\" \
2716 -e \"/^#[ ]*elif[ ]/b\" \
2717 -e \"/^#[ ]*undef[ ]/b\" \
2718 -e \"/^#[ ]*endif/b\" \
2719 -e \"s/^#.*//\" \
894356b3 2720 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2721 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2722#else
092bebab 2723# ifdef __OPEN_VM
cea2e8a9 2724 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2725%s %s -e '/^[^#]/b' \
2726 -e '/^#[ ]*include[ ]/b' \
2727 -e '/^#[ ]*define[ ]/b' \
2728 -e '/^#[ ]*if[ ]/b' \
2729 -e '/^#[ ]*ifdef[ ]/b' \
2730 -e '/^#[ ]*ifndef[ ]/b' \
2731 -e '/^#[ ]*else/b' \
2732 -e '/^#[ ]*elif[ ]/b' \
2733 -e '/^#[ ]*undef[ ]/b' \
2734 -e '/^#[ ]*endif/b' \
2735 -e 's/^[ ]*#.*//' \
894356b3 2736 %s | %"SVf" %"SVf" %s",
092bebab 2737# else
cea2e8a9 2738 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2739%s %s -e '/^[^#]/b' \
2740 -e '/^#[ ]*include[ ]/b' \
2741 -e '/^#[ ]*define[ ]/b' \
2742 -e '/^#[ ]*if[ ]/b' \
2743 -e '/^#[ ]*ifdef[ ]/b' \
2744 -e '/^#[ ]*ifndef[ ]/b' \
2745 -e '/^#[ ]*else/b' \
2746 -e '/^#[ ]*elif[ ]/b' \
2747 -e '/^#[ ]*undef[ ]/b' \
2748 -e '/^#[ ]*endif/b' \
2749 -e 's/^[ ]*#.*//' \
894356b3 2750 %s | %"SVf" -C %"SVf" %s",
092bebab 2751# endif
79072805
LW		 2752#ifdef LOC_SED
2753 LOC_SED,
2754#else
2755 "sed",
2756#endif
3280af22 2757 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2758#endif
46fc3d4c 2759 scriptname, cpp, sv, CPPMINUS);
3280af22 2760 PL_doextract = FALSE;
79072805 2761#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2762 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2763#ifdef HAS_SETEUID
b28d0864 2764 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2765#else
2766#ifdef HAS_SETREUID
b28d0864 2767 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2768#else
2769#ifdef HAS_SETRESUID
b28d0864 2770 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2771#else
b28d0864 2772 PerlProc_setuid(PL_uid);
79072805
LW		 2773#endif
2774#endif
85e6fe83 2775#endif
b28d0864 2776 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2777 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2778 }
2779#endif /* IAMSUID */
3280af22 2780 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2781 SvREFCNT_dec(cmd);
2782 SvREFCNT_dec(cpp);
79072805
LW		 2783 }
2784 else if (!*scriptname) {
bbce6d69 2785 forbid_setid("program input from stdin");
3280af22 2786 PL_rsfp = PerlIO_stdin();
79072805 2787 }
96436eeb 2788 else {
3280af22 2789 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2790#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2791 if (PL_rsfp)
2792 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2793#endif
2794 }
3280af22 2795 if (!PL_rsfp) {
13281fa4 2796#ifdef DOSUID
a687059c 2797#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2798 if (PL_euid &&
cc49e20b 2799 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2800 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2801 {
46fc3d4c 2802 /* try again */
a7cb1f99 2803 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2804 (int)PERL_REVISION, (int)PERL_VERSION,
2805 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2806 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2807 }
2808#endif
2809#endif
584d69ec
JH		 2810#ifdef IAMSUID
2811 errno = EPERM;
2812 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2813 Strerror(errno));
2814#else
cea2e8a9 2815 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2816 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2817#endif
13281fa4 2818 }
79072805 2819}
8d063cd8 2820
7b89560d
JH		 2821/* Mention
2822 * I_SYSSTATVFS HAS_FSTATVFS
2823 * I_SYSMOUNT
c890dc6c 2824 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2825 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2826 * here so that metaconfig picks them up. */
2827
104d25b7 2828#ifdef IAMSUID
864dbfa3 2829STATIC int
e688b231 2830S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2831{
0545a864
JH		 2832 int check_okay = 0; /* able to do all the required sys/libcalls */
2833 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2834/*
ad27e871 2835 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2836 * fstatvfs() is UNIX98.
0545a864 2837 * fstatfs() is 4.3 BSD.
ad27e871 2838 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2839 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2840 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2841 */
2842
6439433f
JH		 2843#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2844
2845# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2846 defined(HAS_FSTATVFS)
2847# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2848 struct statvfs stfs;
6439433f 2849
104d25b7
JH		 2850 check_okay = fstatvfs(fd, &stfs) == 0;
2851 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2852# endif /* fstatvfs */
ac27b0f5 2853
6439433f
JH		 2854# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2855 defined(PERL_MOUNT_NOSUID) && \
2856 defined(HAS_FSTATFS) && \
2857 defined(HAS_STRUCT_STATFS) && \
2858 defined(HAS_STRUCT_STATFS_F_FLAGS)
2859# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2860 struct statfs stfs;
6439433f 2861
104d25b7 2862 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2863 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2864# endif /* fstatfs */
2865
2866# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2867 defined(PERL_MOUNT_NOSUID) && \
2868 defined(HAS_FSTAT) && \
2869 defined(HAS_USTAT) && \
2870 defined(HAS_GETMNT) && \
2871 defined(HAS_STRUCT_FS_DATA) && \
2872 defined(NOSTAT_ONE)
2873# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2874 struct stat fdst;
6439433f 2875
0545a864 2876 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2877 struct ustat us;
2878 if (ustat(fdst.st_dev, &us) == 0) {
2879 struct fs_data fsd;
2880 /* NOSTAT_ONE here because we're not examining fields which
2881 * vary between that case and STAT_ONE. */
ad27e871 2882 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2883 size_t cmplen = sizeof(us.f_fname);
2884 if (sizeof(fsd.fd_req.path) < cmplen)
2885 cmplen = sizeof(fsd.fd_req.path);
2886 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2887 fdst.st_dev == fsd.fd_req.dev) {
2888 check_okay = 1;
2889 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2890 }
2891 }
2892 }
2893 }
0545a864 2894 }
6439433f
JH		 2895# endif /* fstat+ustat+getmnt */
2896
2897# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2898 defined(HAS_GETMNTENT) && \
2899 defined(HAS_HASMNTOPT) && \
2900 defined(MNTOPT_NOSUID)
2901# define FD_ON_NOSUID_CHECK_OKAY
2902 FILE *mtab = fopen("/etc/mtab", "r");
2903 struct mntent *entry;
2904 struct stat stb, fsb;
104d25b7
JH		 2905
2906 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2907 while (entry = getmntent(mtab)) {
2908 if (stat(entry->mnt_dir, &fsb) == 0
2909 && fsb.st_dev == stb.st_dev)
2910 {
2911 /* found the filesystem */
2912 check_okay = 1;
2913 if (hasmntopt(entry, MNTOPT_NOSUID))
2914 on_nosuid = 1;
2915 break;
2916 } /* A single fs may well fail its stat(). */
2917 }
104d25b7
JH		 2918 }
2919 if (mtab)
6439433f
JH		 2920 fclose(mtab);
2921# endif /* getmntent+hasmntopt */
0545a864 2922
ac27b0f5 2923 if (!check_okay)
0545a864 2924 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2925 return on_nosuid;
2926}
2927#endif /* IAMSUID */
2928
76e3520e 2929STATIC void
cea2e8a9 2930S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2931{
155aba94 2932#ifdef IAMSUID
96436eeb 2933 int which;
155aba94 2934#endif
96436eeb 2935
13281fa4
LW		 2936 /* do we need to emulate setuid on scripts? */
2937
2938 /* This code is for those BSD systems that have setuid #! scripts disabled
2939 * in the kernel because of a security problem. Merely defining DOSUID
2940 * in perl will not fix that problem, but if you have disabled setuid
2941 * scripts in the kernel, this will attempt to emulate setuid and setgid
2942 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2943 * root version must be called suidperl or sperlN.NNN. If regular perl
2944 * discovers that it has opened a setuid script, it calls suidperl with
2945 * the same argv that it had. If suidperl finds that the script it has
2946 * just opened is NOT setuid root, it sets the effective uid back to the
2947 * uid. We don't just make perl setuid root because that loses the
2948 * effective uid we had before invoking perl, if it was different from the
2949 * uid.
13281fa4
LW		 2950 *
2951 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2952 * be defined in suidperl only. suidperl must be setuid root. The
2953 * Configure script will set this up for you if you want it.
2954 */
a687059c 2955
13281fa4 2956#ifdef DOSUID
6e72f9df 2957 char *s, *s2;
a0d0e21e 2958
b28d0864 2959 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2960 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2961 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2962 I32 len;
2d8e6c8d 2963 STRLEN n_a;
13281fa4 2964
a687059c 2965#ifdef IAMSUID
fe14fcc3 2966#ifndef HAS_SETREUID
a687059c
LW		 2967 /* On this access check to make sure the directories are readable,
2968 * there is actually a small window that the user could use to make
2969 * filename point to an accessible directory. So there is a faint
2970 * chance that someone could execute a setuid script down in a
2971 * non-accessible directory. I don't know what to do about that.
2972 * But I don't think it's too important. The manual lies when
2973 * it says access() is useful in setuid programs.
2974 */
cc49e20b 2975 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2976 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2977#else
2978 /* If we can swap euid and uid, then we can determine access rights
2979 * with a simple stat of the file, and then compare device and
2980 * inode to make sure we did stat() on the same file we opened.
2981 * Then we just have to make sure he or she can execute it.
2982 */
2983 {
2984 struct stat tmpstatbuf;
2985
85e6fe83
LW		 2986 if (
2987#ifdef HAS_SETREUID
b28d0864 2988 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2989#else
2990# if HAS_SETRESUID
b28d0864 2991 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2992# endif
85e6fe83 2993#endif
b28d0864 2994 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2995 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2996 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2997 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2998#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2999 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3000 Perl_croak(aTHX_ "Permission denied");
104d25b7 3001#endif
b28d0864
NIS		 3002 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3003 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3004 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3005 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3006 }
85e6fe83
LW		 3007 if (
3008#ifdef HAS_SETREUID
b28d0864 3009 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 3010#else
3011# if defined(HAS_SETRESUID)
b28d0864 3012 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3013# endif
85e6fe83 3014#endif
b28d0864 3015 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3016 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3017 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3018 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3019 }
fe14fcc3 3020#endif /* HAS_SETREUID */
a687059c
LW		 3021#endif /* IAMSUID */
3022
b28d0864 3023 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3024 Perl_croak(aTHX_ "Permission denied");
b28d0864 3025 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3026 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3027 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3028 CopLINE_inc(PL_curcop);
6b88bc9c 3029 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3030 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3031 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3032 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3033 if (*s == ' ') s++;
45d8adaa 3034 while (!isSPACE(*s)) s++;
2d8e6c8d 3035 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3036 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3037 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3038 Perl_croak(aTHX_ "Not a perl script");
a687059c 3039 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3040 /*
3041 * #! arg must be what we saw above. They can invoke it by
3042 * mentioning suidperl explicitly, but they may not add any strange
3043 * arguments beyond what #! says if they do invoke suidperl that way.
3044 */
3045 len = strlen(validarg);
3046 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3047 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3048 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3049
3050#ifndef IAMSUID
b28d0864
NIS		 3051 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3052 PL_euid == PL_statbuf.st_uid)
3053 if (!PL_do_undump)
cea2e8a9 3054 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3055FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3056#endif /* IAMSUID */
13281fa4 3057
b28d0864
NIS		 3058 if (PL_euid) { /* oops, we're not the setuid root perl */
3059 (void)PerlIO_close(PL_rsfp);
13281fa4 3060#ifndef IAMSUID
46fc3d4c 3061 /* try again */
a7cb1f99 3062 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3063 (int)PERL_REVISION, (int)PERL_VERSION,
3064 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3065#endif
cea2e8a9 3066 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3067 }
3068
b28d0864 3069 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3070#ifdef HAS_SETEGID
b28d0864 3071 (void)setegid(PL_statbuf.st_gid);
a687059c 3072#else
fe14fcc3 3073#ifdef HAS_SETREGID
b28d0864 3074 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3075#else
3076#ifdef HAS_SETRESGID
b28d0864 3077 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3078#else
b28d0864 3079 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3080#endif
3081#endif
85e6fe83 3082#endif
b28d0864 3083 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3084 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3085 }
b28d0864
NIS		 3086 if (PL_statbuf.st_mode & S_ISUID) {
3087 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3088#ifdef HAS_SETEUID
b28d0864 3089 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3090#else
fe14fcc3 3091#ifdef HAS_SETREUID
b28d0864 3092 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3093#else
3094#ifdef HAS_SETRESUID
b28d0864 3095 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3096#else
b28d0864 3097 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3098#endif
3099#endif
85e6fe83 3100#endif
b28d0864 3101 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3102 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3103 }
b28d0864 3104 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3105#ifdef HAS_SETEUID
b28d0864 3106 (void)seteuid((Uid_t)PL_uid);
a687059c 3107#else
fe14fcc3 3108#ifdef HAS_SETREUID
b28d0864 3109 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3110#else
85e6fe83 3111#ifdef HAS_SETRESUID
b28d0864 3112 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3113#else
b28d0864 3114 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3115#endif
a687059c
LW		 3116#endif
3117#endif
b28d0864 3118 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3119 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3120 }
748a9306 3121 init_ids();
b28d0864 3122 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3123 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3124 }
3125#ifdef IAMSUID
6b88bc9c 3126 else if (PL_preprocess)
cea2e8a9 3127 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3128 else if (fdscript >= 0)
cea2e8a9 3129 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3130 else
cea2e8a9 3131 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3132
3133 /* We absolutely must clear out any saved ids here, so we */
3134 /* exec the real perl, substituting fd script for scriptname. */
3135 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3136 PerlIO_rewind(PL_rsfp);
3137 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3138 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3139 if (!PL_origargv[which])
cea2e8a9
GS		 3140 Perl_croak(aTHX_ "Permission denied");
3141 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3142 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3143#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3144 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3145#endif
a7cb1f99 3146 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3147 (int)PERL_REVISION, (int)PERL_VERSION,
3148 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3149 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3150#endif /* IAMSUID */
a687059c 3151#else /* !DOSUID */
3280af22 3152 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3153#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3154 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3155 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3156 ||
b28d0864 3157 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3158 )
b28d0864 3159 if (!PL_do_undump)
cea2e8a9 3160 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3161FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3162#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3163 /* not set-id, must be wrapped */
a687059c 3164 }
13281fa4 3165#endif /* DOSUID */
79072805 3166}
13281fa4 3167
76e3520e 3168STATIC void
cea2e8a9 3169S_find_beginning(pTHX)
79072805 3170{
6e72f9df 3171 register char *s, *s2;
33b78306
LW		 3172
3173 /* skip forward in input to the real script? */
3174
bbce6d69 3175 forbid_setid("-x");
bf4acbe4 3176#ifdef MACOS_TRADITIONAL
084592ab 3177 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3178
bf4acbe4
GS		 3179 while (PL_doextract || gMacPerl_AlwaysExtract) {
3180 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3181 if (!gMacPerl_AlwaysExtract)
3182 Perl_croak(aTHX_ "No Perl script found in input\n");
3183
3184 if (PL_doextract) /* require explicit override ? */
3185 if (!OverrideExtract(PL_origfilename))
3186 Perl_croak(aTHX_ "User aborted script\n");
3187 else
3188 PL_doextract = FALSE;
3189
3190 /* Pater peccavi, file does not have #! */
3191 PerlIO_rewind(PL_rsfp);
ac27b0f5 3192
bf4acbe4
GS		 3193 break;
3194 }
3195#else
3280af22
NIS		 3196 while (PL_doextract) {
3197 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3198 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3199#endif
4f0c37ba
IZ		 3200 s2 = s;
3201 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3202 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3203 PL_doextract = FALSE;
6e72f9df 3204 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3205 s2 = s;
3206 while (*s == ' ' || *s == '\t') s++;
3207 if (*s++ == '-') {
3208 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3209 if (strnEQ(s2-4,"perl",4))
3210 /*SUPPRESS 530*/
155aba94
GS		 3211 while ((s = moreswitches(s)))
3212 ;
33b78306 3213 }
95e8664e
CN		 3214#ifdef MACOS_TRADITIONAL
3215 break;
3216#endif
83025b21
LW		 3217 }
3218 }
3219}
3220
afe37c7d 3221
76e3520e 3222STATIC void
cea2e8a9 3223S_init_ids(pTHX)
352d5a3a 3224{
d8eceb89
JH		 3225 PL_uid = PerlProc_getuid();
3226 PL_euid = PerlProc_geteuid();
3227 PL_gid = PerlProc_getgid();
3228 PL_egid = PerlProc_getegid();
748a9306 3229#ifdef VMS
b28d0864
NIS		 3230 PL_uid |= PL_gid << 16;
3231 PL_euid |= PL_egid << 16;
748a9306 3232#endif
3280af22 3233 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3234}
79072805 3235
76e3520e 3236STATIC void
cea2e8a9 3237S_forbid_setid(pTHX_ char *s)
bbce6d69 3238{
3280af22 3239 if (PL_euid != PL_uid)
cea2e8a9 3240 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3241 if (PL_egid != PL_gid)
cea2e8a9 3242 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3243}
3244
1ee4443e
IZ		 3245void
3246Perl_init_debugger(pTHX)
748a9306 3247{
1ee4443e
IZ		 3248 HV *ostash = PL_curstash;
3249
3280af22
NIS		 3250 PL_curstash = PL_debstash;
3251 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3252 AvREAL_off(PL_dbargs);
3253 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3254 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3255 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3256 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3257 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3258 sv_setiv(PL_DBsingle, 0);
3280af22 3259 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3260 sv_setiv(PL_DBtrace, 0);
3280af22 3261 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3262 sv_setiv(PL_DBsignal, 0);
1ee4443e 3263 PL_curstash = ostash;
352d5a3a
LW		 3264}
3265
2ce36478
SM		 3266#ifndef STRESS_REALLOC
3267#define REASONABLE(size) (size)
3268#else
3269#define REASONABLE(size) (1) /* unreasonable */
3270#endif
3271
11343788 3272void
cea2e8a9 3273Perl_init_stacks(pTHX)
79072805 3274{
e336de0d 3275 /* start with 128-item stack and 8K cxstack */
3280af22 3276 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3277 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3278 PL_curstackinfo->si_type = PERLSI_MAIN;
3279 PL_curstack = PL_curstackinfo->si_stack;
3280 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3281
3280af22
NIS		 3282 PL_stack_base = AvARRAY(PL_curstack);
3283 PL_stack_sp = PL_stack_base;
3284 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3285
3280af22
NIS		 3286 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3287 PL_tmps_floor = -1;
3288 PL_tmps_ix = -1;
3289 PL_tmps_max = REASONABLE(128);
8990e307 3290
3280af22
NIS		 3291 New(54,PL_markstack,REASONABLE(32),I32);
3292 PL_markstack_ptr = PL_markstack;
3293 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3294
ce2f7c3b 3295 SET_MARK_OFFSET;
e336de0d 3296
3280af22
NIS		 3297 New(54,PL_scopestack,REASONABLE(32),I32);
3298 PL_scopestack_ix = 0;
3299 PL_scopestack_max = REASONABLE(32);
79072805 3300
3280af22
NIS		 3301 New(54,PL_savestack,REASONABLE(128),ANY);
3302 PL_savestack_ix = 0;
3303 PL_savestack_max = REASONABLE(128);
79072805 3304
3280af22
NIS		 3305 New(54,PL_retstack,REASONABLE(16),OP*);
3306 PL_retstack_ix = 0;
3307 PL_retstack_max = REASONABLE(16);
378cc40b 3308}
33b78306 3309
2ce36478
SM		 3310#undef REASONABLE
3311
76e3520e 3312STATIC void
cea2e8a9 3313S_nuke_stacks(pTHX)
6e72f9df 3314{
3280af22
NIS		 3315 while (PL_curstackinfo->si_next)
3316 PL_curstackinfo = PL_curstackinfo->si_next;
3317 while (PL_curstackinfo) {
3318 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3319 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3320 Safefree(PL_curstackinfo->si_cxstack);
3321 Safefree(PL_curstackinfo);
3322 PL_curstackinfo = p;
e336de0d 3323 }
3280af22
NIS		 3324 Safefree(PL_tmps_stack);
3325 Safefree(PL_markstack);
3326 Safefree(PL_scopestack);
3327 Safefree(PL_savestack);
3328 Safefree(PL_retstack);
378cc40b 3329}
33b78306 3330
76e3520e 3331#ifndef PERL_OBJECT
760ac839 3332static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 3333#endif
7aa04957 3334
76e3520e 3335STATIC void
cea2e8a9 3336S_init_lexer(pTHX)
8990e307 3337{
76e3520e
GS		 3338#ifdef PERL_OBJECT
3339 PerlIO *tmpfp;
3340#endif
3280af22
NIS		 3341 tmpfp = PL_rsfp;
3342 PL_rsfp = Nullfp;
3343 lex_start(PL_linestr);
3344 PL_rsfp = tmpfp;
79cb57f6 3345 PL_subname = newSVpvn("main",4);
8990e307
LW		 3346}
3347
76e3520e 3348STATIC void
cea2e8a9 3349S_init_predump_symbols(pTHX)
45d8adaa 3350{
93a17b20 3351 GV *tmpgv;
af8c498a 3352 IO *io;
79072805 3353
864dbfa3 3354 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3355 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3356 GvMULTI_on(PL_stdingv);
af8c498a 3357 io = GvIOp(PL_stdingv);
a04651f4 3358 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3359 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3360 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3361 GvMULTI_on(tmpgv);
af8c498a 3362 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3363
85e6fe83 3364 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3365 GvMULTI_on(tmpgv);
af8c498a 3366 io = GvIOp(tmpgv);
a04651f4 3367 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3368 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3369 setdefout(tmpgv);
adbc6bb1 3370 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3371 GvMULTI_on(tmpgv);
af8c498a 3372 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3373
bf49b057
GS		 3374 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3375 GvMULTI_on(PL_stderrgv);
3376 io = GvIOp(PL_stderrgv);
a04651f4 3377 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3378 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3379 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3380 GvMULTI_on(tmpgv);
af8c498a 3381 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3382
3280af22 3383 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3384
bf4acbe4
GS		 3385 if (PL_osname)
3386 Safefree(PL_osname);
3387 PL_osname = savepv(OSNAME);
79072805 3388}
33b78306 3389
76e3520e 3390STATIC void
cea2e8a9 3391S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3392{
79072805
LW		 3393 char *s;
3394 SV *sv;
3395 GV* tmpgv;
9cbac4c7 3396#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3397 char **dup_env_base = 0;
103a7189 3398 int dup_env_count = 0;
9cbac4c7 3399#endif
fe14fcc3 3400
79072805 3401 argc--,argv++; /* skip name of script */
3280af22 3402 if (PL_doswitches) {
79072805
LW		 3403 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3404 if (!argv[0][1])
3405 break;
379d538a 3406 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3407 argc--,argv++;
3408 break;
3409 }
155aba94 3410 if ((s = strchr(argv[0], '='))) {
79072805 3411 *s++ = '\0';
85e6fe83 3412 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3413 }
3414 else
85e6fe83 3415 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3416 }
79072805 3417 }
3280af22
NIS		 3418 PL_toptarget = NEWSV(0,0);
3419 sv_upgrade(PL_toptarget, SVt_PVFM);
3420 sv_setpvn(PL_toptarget, "", 0);
3421 PL_bodytarget = NEWSV(0,0);
3422 sv_upgrade(PL_bodytarget, SVt_PVFM);
3423 sv_setpvn(PL_bodytarget, "", 0);
3424 PL_formtarget = PL_bodytarget;
79072805 3425
bbce6d69 3426 TAINT;
155aba94 3427 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3428#ifdef MACOS_TRADITIONAL
3429 /* $0 is not majick on a Mac */
3430 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3431#else
3280af22 3432 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3433 magicname("0", "0", 1);
bf4acbe4 3434#endif
79072805 3435 }
155aba94 3436 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3437#ifdef OS2
23da6c43 3438 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3439#else
3280af22 3440 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3441#endif
155aba94 3442 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3443 GvMULTI_on(PL_argvgv);
3444 (void)gv_AVadd(PL_argvgv);
3445 av_clear(GvAVn(PL_argvgv));
79072805 3446 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3447 SV *sv = newSVpv(argv[0],0);
3448 av_push(GvAVn(PL_argvgv),sv);
3449 if (PL_widesyscalls)
e84ff256 3450 (void)sv_utf8_decode(sv);
79072805
LW		 3451 }
3452 }
155aba94 3453 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3454 HV *hv;
3280af22
NIS		 3455 GvMULTI_on(PL_envgv);
3456 hv = GvHVn(PL_envgv);
14befaf4 3457 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3458#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3459 /* Note that if the supplied env parameter is actually a copy
3460 of the global environ then it may now point to free'd memory
3461 if the environment has been modified since. To avoid this
3462 problem we treat env==NULL as meaning 'use the default'
3463 */
3464 if (!env)
3465 env = environ;
5aabfad6 3466 if (env != environ)
79072805 3467 environ[0] = Nullch;
103a7189
JH		 3468#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3469 {
3470 char **env_base;
9041c2e3 3471 for (env_base = env; *env; env++)
103a7189
JH		 3472 dup_env_count++;
3473 if ((dup_env_base = (char **)
480bfd1e 3474 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3475 char **dup_env;
3476 for (env = env_base, dup_env = dup_env_base;
3477 *env;
480bfd1e
JH		 3478 env++, dup_env++) {
3479 /* With environ one needs to use safesysmalloc(). */
3480 *dup_env = safesysmalloc(strlen(*env) + 1);
3481 (void)strcpy(*dup_env, *env);
3482 }
103a7189
JH		 3483 *dup_env = Nullch;
3484 env = dup_env_base;
3485 } /* else what? */
3486 }
3487#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3488 if (env)
3489 for (; *env; env++) {
93a17b20 3490 if (!(s = strchr(*env,'=')))
79072805
LW		 3491 continue;
3492 *s++ = '\0';
60ce6247 3493#if defined(MSDOS)
137443ea 3494 (void)strupr(*env);
3495#endif
79072805
LW		 3496 sv = newSVpv(s--,0);
3497 (void)hv_store(hv, *env, s - *env, sv, 0);
3498 *s = '=';
764df951 3499 }
480bfd1e 3500#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3501 if (dup_env_base) {
3502 char **dup_env;
3503 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3504 safesysfree(*dup_env);
3505 safesysfree(dup_env_base);
103a7189 3506 }
7e0f6a1f 3507#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3508#endif /* USE_ENVIRON_ARRAY */
79072805 3509 }
bbce6d69 3510 TAINT_NOT;
155aba94 3511 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3512 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3513}
34de22dd 3514
76e3520e 3515STATIC void
cea2e8a9 3516S_init_perllib(pTHX)
34de22dd 3517{
85e6fe83 3518 char *s;
3280af22 3519 if (!PL_tainting) {
552a7a9b 3520#ifndef VMS
76e3520e 3521 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3522 if (s)
9c8a64f0 3523 incpush(s, TRUE, TRUE);
85e6fe83 3524 else
9c8a64f0 3525 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3526#else /* VMS */
3527 /* Treat PERL5?LIB as a possible search list logical name -- the
3528 * "natural" VMS idiom for a Unix path string. We allow each
3529 * element to be a set of |-separated directories for compatibility.
3530 */
3531 char buf[256];
3532 int idx = 0;
3533 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3534 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3535 else
9c8a64f0 3536 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3537#endif /* VMS */
85e6fe83 3538 }
34de22dd 3539
c90c0ff4 3540/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3541 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3542*/
4633a7c4 3543#ifdef APPLLIB_EXP
9c8a64f0 3544 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3545#endif
4633a7c4 3546
fed7345c 3547#ifdef ARCHLIB_EXP
9c8a64f0 3548 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3549#endif
bf4acbe4
GS		 3550#ifdef MACOS_TRADITIONAL
3551 {
3552 struct stat tmpstatbuf;
3553 SV * privdir = NEWSV(55, 0);
3554 char * macperl = PerlEnv_getenv("MACPERL");
3555
3556 if (!macperl)
3557 macperl = "";
3558
3559 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3560 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3561 incpush(SvPVX(privdir), TRUE, FALSE);
3562 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3563 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3564 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3565
bf4acbe4
GS		 3566 SvREFCNT_dec(privdir);
3567 }
3568 if (!PL_tainting)
3569 incpush(":", FALSE, FALSE);
3570#else
fed7345c 3571#ifndef PRIVLIB_EXP
65f19062 3572# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3573#endif
ac27b0f5 3574#if defined(WIN32)
9c8a64f0 3575 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3576#else
9c8a64f0 3577 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3578#endif
4633a7c4 3579
65f19062 3580#ifdef SITEARCH_EXP
3b290362
GS		 3581 /* sitearch is always relative to sitelib on Windows for
3582 * DLL-based path intuition to work correctly */
3583# if !defined(WIN32)
9c8a64f0 3584 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3585# endif
3586#endif
3587
4633a7c4 3588#ifdef SITELIB_EXP
65f19062 3589# if defined(WIN32)
9c8a64f0 3590 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3591# else
9c8a64f0 3592 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3593# endif
3594#endif
189d1e8d 3595
65f19062 3596#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3597 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3598#endif
65f19062
GS		 3599
3600#ifdef PERL_VENDORARCH_EXP
4ea817c6 3601 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3602 * DLL-based path intuition to work correctly */
3603# if !defined(WIN32)
9c8a64f0 3604 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3605# endif
4b03c463 3606#endif
65f19062
GS		 3607
3608#ifdef PERL_VENDORLIB_EXP
3609# if defined(WIN32)
9c8a64f0 3610 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3611# else
9c8a64f0 3612 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3613# endif
a3635516 3614#endif
65f19062
GS		 3615
3616#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3617 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3618#endif
65f19062 3619
3b777bb4
GS		 3620#ifdef PERL_OTHERLIBDIRS
3621 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3622#endif
3623
3280af22 3624 if (!PL_tainting)
9c8a64f0 3625 incpush(".", FALSE, FALSE);
bf4acbe4 3626#endif /* MACOS_TRADITIONAL */
774d564b 3627}
3628
ed79a026 3629#if defined(DOSISH) || defined(EPOC)
774d564b 3630# define PERLLIB_SEP ';'
3631#else
3632# if defined(VMS)
3633# define PERLLIB_SEP '|'
3634# else
bf4acbe4
GS		 3635# if defined(MACOS_TRADITIONAL)
3636# define PERLLIB_SEP ','
3637# else
3638# define PERLLIB_SEP ':'
3639# endif
774d564b 3640# endif
3641#endif
3642#ifndef PERLLIB_MANGLE
3643# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3644#endif
774d564b 3645
76e3520e 3646STATIC void
9c8a64f0 3647S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3648{
3649 SV *subdir = Nullsv;
774d564b 3650
3b290362 3651 if (!p || !*p)
774d564b 3652 return;
3653
9c8a64f0 3654 if (addsubdirs || addoldvers) {
00db4c45 3655 subdir = sv_newmortal();
774d564b 3656 }
3657
3658 /* Break at all separators */
3659 while (p && *p) {
8c52afec 3660 SV *libdir = NEWSV(55,0);
774d564b 3661 char *s;
3662
3663 /* skip any consecutive separators */
3664 while ( *p == PERLLIB_SEP ) {
3665 /* Uncomment the next line for PATH semantics */
79cb57f6 3666 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3667 p++;
3668 }
3669
3670 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3671 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3672 (STRLEN)(s - p));
3673 p = s + 1;
3674 }
3675 else {
3676 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3677 p = Nullch; /* break out */
3678 }
bf4acbe4
GS		 3679#ifdef MACOS_TRADITIONAL
3680 if (!strchr(SvPVX(libdir), ':'))
3681 sv_insert(libdir, 0, 0, ":", 1);
3682 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3683 sv_catpv(libdir, ":");
3684#endif
774d564b 3685
3686 /*
3687 * BEFORE pushing libdir onto @INC we may first push version- and
3688 * archname-specific sub-directories.
3689 */
9c8a64f0 3690 if (addsubdirs || addoldvers) {
29d82f8d 3691#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3692 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3693 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3694 const char **incver;
3695#endif
774d564b 3696 struct stat tmpstatbuf;
aa689395 3697#ifdef VMS
3698 char *unix;
3699 STRLEN len;
774d564b 3700
2d8e6c8d 3701 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3702 len = strlen(unix);
3703 while (unix[len-1] == '/') len--; /* Cosmetic */
3704 sv_usepvn(libdir,unix,len);
3705 }
3706 else
bf49b057 3707 PerlIO_printf(Perl_error_log,
aa689395 3708 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3709 SvPV(libdir,len));
aa689395 3710#endif
9c8a64f0 3711 if (addsubdirs) {
bf4acbe4
GS		 3712#ifdef MACOS_TRADITIONAL
3713#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3714#define PERL_ARCH_FMT "%s:"
3715#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3716#else
3717#define PERL_AV_SUFFIX_FMT "/"
3718#define PERL_ARCH_FMT "/%s"
084592ab 3719#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3720#endif
9c8a64f0 3721 /* .../version/archname if -d .../version/archname */
084592ab 3722 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3723 libdir,
3724 (int)PERL_REVISION, (int)PERL_VERSION,
3725 (int)PERL_SUBVERSION, ARCHNAME);
3726 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3727 S_ISDIR(tmpstatbuf.st_mode))
3728 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3729
9c8a64f0 3730 /* .../version if -d .../version */
084592ab 3731 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3732 (int)PERL_REVISION, (int)PERL_VERSION,
3733 (int)PERL_SUBVERSION);
3734 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3735 S_ISDIR(tmpstatbuf.st_mode))
3736 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3737
3738 /* .../archname if -d .../archname */
bf4acbe4 3739 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3740 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3741 S_ISDIR(tmpstatbuf.st_mode))
3742 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3743 }
9c8a64f0 3744
9c8a64f0 3745#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3746 if (addoldvers) {
9c8a64f0
GS		 3747 for (incver = incverlist; *incver; incver++) {
3748 /* .../xxx if -d .../xxx */
bf4acbe4 3749 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3750 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3751 S_ISDIR(tmpstatbuf.st_mode))
3752 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3753 }
3754 }
29d82f8d 3755#endif
774d564b 3756 }
3757
3758 /* finally push this lib directory on the end of @INC */
3280af22 3759 av_push(GvAVn(PL_incgv), libdir);
774d564b 3760 }
34de22dd 3761}
93a17b20 3762
199100c8 3763#ifdef USE_THREADS
76e3520e 3764STATIC struct perl_thread *
cea2e8a9 3765S_init_main_thread(pTHX)
199100c8 3766{
c5be433b 3767#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3768 struct perl_thread *thr;
cea2e8a9 3769#endif
199100c8
MB		 3770 XPV *xpv;
3771
52e1cb5e 3772 Newz(53, thr, 1, struct perl_thread);
533c011a 3773 PL_curcop = &PL_compiling;
c5be433b 3774 thr->interp = PERL_GET_INTERP;
199100c8 3775 thr->cvcache = newHV();
54b9620d 3776 thr->threadsv = newAV();
940cb80d 3777 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3778 thr->specific = newAV();
3779 thr->flags = THRf_R_JOINABLE;
3780 MUTEX_INIT(&thr->mutex);
3781 /* Handcraft thrsv similarly to mess_sv */
533c011a 3782 New(53, PL_thrsv, 1, SV);
199100c8 3783 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3784 SvFLAGS(PL_thrsv) = SVt_PV;
3785 SvANY(PL_thrsv) = (void*)xpv;
3786 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3787 SvPVX(PL_thrsv) = (char*)thr;
3788 SvCUR_set(PL_thrsv, sizeof(thr));
3789 SvLEN_set(PL_thrsv, sizeof(thr));
3790 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3791 thr->oursv = PL_thrsv;
3792 PL_chopset = " \n-";
3967c732 3793 PL_dumpindent = 4;
533c011a
NIS		 3794
3795 MUTEX_LOCK(&PL_threads_mutex);
3796 PL_nthreads++;
199100c8
MB		 3797 thr->tid = 0;
3798 thr->next = thr;
3799 thr->prev = thr;
8dcd6f7b 3800 thr->thr_done = 0;
533c011a 3801 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3802
4b026b9e 3803#ifdef HAVE_THREAD_INTERN
4f63d024 3804 Perl_init_thread_intern(thr);
235db74f
GS		 3805#endif
3806
3807#ifdef SET_THREAD_SELF
3808 SET_THREAD_SELF(thr);
199100c8
MB		 3809#else
3810 thr->self = pthread_self();
235db74f 3811#endif /* SET_THREAD_SELF */
06d86050 3812 PERL_SET_THX(thr);
199100c8
MB		 3813
3814 /*
411caa50
JH		 3815 * These must come after the thread self setting
3816 * because sv_setpvn does SvTAINT and the taint
3817 * fields thread selfness being set.
199100c8 3818 */
533c011a
NIS		 3819 PL_toptarget = NEWSV(0,0);
3820 sv_upgrade(PL_toptarget, SVt_PVFM);
3821 sv_setpvn(PL_toptarget, "", 0);
3822 PL_bodytarget = NEWSV(0,0);
3823 sv_upgrade(PL_bodytarget, SVt_PVFM);
3824 sv_setpvn(PL_bodytarget, "", 0);
3825 PL_formtarget = PL_bodytarget;
79cb57f6 3826 thr->errsv = newSVpvn("", 0);
78857c3c 3827 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3828
533c011a 3829 PL_maxscream = -1;
a2efc822 3830 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 3831 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3832 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3833 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3834 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3835 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3836 PL_regindent = 0;
3837 PL_reginterp_cnt = 0;
5c0ca799 3838
199100c8
MB		 3839 return thr;
3840}
3841#endif /* USE_THREADS */
3842
93a17b20 3843void
864dbfa3 3844Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3845{
971a9dd3 3846 SV *atsv;
57843af0 3847 line_t oldline = CopLINE(PL_curcop);
312caa8e 3848 CV *cv;
22921e25 3849 STRLEN len;
6224f72b 3850 int ret;
db36c5a1 3851 dJMPENV;
93a17b20 3852
76e3520e 3853 while (AvFILL(paramList) >= 0) {
312caa8e 3854 cv = (CV*)av_shift(paramList);
059a8bb7
JH		 3855 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3856 /* save PL_beginav for compiler */
3857 if (! PL_beginav_save)
3858 PL_beginav_save = newAV();
3859 av_push(PL_beginav_save, (SV*)cv);
3860 } else {
3861 SAVEFREESV(cv);
3862 }
14dd3ad8
GS		 3863#ifdef PERL_FLEXIBLE_EXCEPTIONS
3864 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3865#else
3866 JMPENV_PUSH(ret);
3867#endif
6224f72b 3868 switch (ret) {
312caa8e 3869 case 0:
14dd3ad8
GS		 3870#ifndef PERL_FLEXIBLE_EXCEPTIONS
3871 call_list_body(cv);
3872#endif
971a9dd3 3873 atsv = ERRSV;
312caa8e
CS		 3874 (void)SvPV(atsv, len);
3875 if (len) {
971a9dd3 3876 STRLEN n_a;
312caa8e 3877 PL_curcop = &PL_compiling;
57843af0 3878 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3879 if (paramList == PL_beginav)
3880 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3881 else
4f25aa18
GS		 3882 Perl_sv_catpvf(aTHX_ atsv,
3883 "%s failed--call queue aborted",
7d30b5c4 3884 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3885 : paramList == PL_initav ? "INIT"
3886 : "END");
312caa8e
CS		 3887 while (PL_scopestack_ix > oldscope)
3888 LEAVE;
14dd3ad8 3889 JMPENV_POP;
971a9dd3 3890 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3891 }
85e6fe83 3892 break;
6224f72b 3893 case 1:
f86702cc 3894 STATUS_ALL_FAILURE;
85e6fe83 3895 /* FALL THROUGH */
6224f72b 3896 case 2:
85e6fe83 3897 /* my_exit() was called */
3280af22 3898 while (PL_scopestack_ix > oldscope)
2ae324a7 3899 LEAVE;
84902520 3900 FREETMPS;
3280af22 3901 PL_curstash = PL_defstash;
3280af22 3902 PL_curcop = &PL_compiling;
57843af0 3903 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3904 JMPENV_POP;
cc3604b1 3905 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3906 if (paramList == PL_beginav)
cea2e8a9 3907 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3908 else
4f25aa18 3909 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3910 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3911 : paramList == PL_initav ? "INIT"
3912 : "END");
85e6fe83 3913 }
f86702cc 3914 my_exit_jump();
85e6fe83 3915 /* NOTREACHED */
6224f72b 3916 case 3:
312caa8e
CS		 3917 if (PL_restartop) {
3918 PL_curcop = &PL_compiling;
57843af0 3919 CopLINE_set(PL_curcop, oldline);
312caa8e 3920 JMPENV_JUMP(3);
85e6fe83 3921 }
bf49b057 3922 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3923 FREETMPS;
3924 break;
8990e307 3925 }
14dd3ad8 3926 JMPENV_POP;
93a17b20 3927 }
93a17b20 3928}
93a17b20 3929
14dd3ad8 3930#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3931STATIC void *
14dd3ad8 3932S_vcall_list_body(pTHX_ va_list args)
312caa8e 3933{
312caa8e 3934 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3935 return call_list_body(cv);
3936}
3937#endif
312caa8e 3938
14dd3ad8
GS		 3939STATIC void *
3940S_call_list_body(pTHX_ CV *cv)
3941{
312caa8e 3942 PUSHMARK(PL_stack_sp);
864dbfa3 3943 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3944 return NULL;
3945}
3946
f86702cc 3947void
864dbfa3 3948Perl_my_exit(pTHX_ U32 status)
f86702cc 3949{
8b73bbec 3950 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3951 thr, (unsigned long) status));
f86702cc 3952 switch (status) {
3953 case 0:
3954 STATUS_ALL_SUCCESS;
3955 break;
3956 case 1:
3957 STATUS_ALL_FAILURE;
3958 break;
3959 default:
3960 STATUS_NATIVE_SET(status);
3961 break;
3962 }
3963 my_exit_jump();
3964}
3965
3966void
864dbfa3 3967Perl_my_failure_exit(pTHX)
f86702cc 3968{
3969#ifdef VMS
3970 if (vaxc$errno & 1) {
4fdae800 3971 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3972 STATUS_NATIVE_SET(44);
f86702cc 3973 }
3974 else {
ff0cee69 3975 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3976 STATUS_NATIVE_SET(44);
f86702cc 3977 else
4fdae800 3978 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3979 }
3980#else
9b599b2a 3981 int exitstatus;
f86702cc 3982 if (errno & 255)
3983 STATUS_POSIX_SET(errno);
9b599b2a 3984 else {
ac27b0f5 3985 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 3986 if (exitstatus & 255)
3987 STATUS_POSIX_SET(exitstatus);
3988 else
3989 STATUS_POSIX_SET(255);
3990 }
f86702cc 3991#endif
3992 my_exit_jump();
93a17b20
LW		 3993}
3994
76e3520e 3995STATIC void
cea2e8a9 3996S_my_exit_jump(pTHX)
f86702cc 3997{
c09156bb 3998 register PERL_CONTEXT *cx;
f86702cc 3999 I32 gimme;
4000 SV **newsp;
4001
3280af22
NIS		 4002 if (PL_e_script) {
4003 SvREFCNT_dec(PL_e_script);
4004 PL_e_script = Nullsv;
f86702cc 4005 }
4006
3280af22 4007 POPSTACK_TO(PL_mainstack);
f86702cc 4008 if (cxstack_ix >= 0) {
4009 if (cxstack_ix > 0)
4010 dounwind(0);
3280af22 4011 POPBLOCK(cx,PL_curpm);
f86702cc 4012 LEAVE;
4013 }
ff0cee69 4014
6224f72b 4015 JMPENV_JUMP(2);
f86702cc 4016}
873ef191 4017
7a5f8e82 4018#ifdef PERL_OBJECT
873ef191 4019#include "XSUB.h"
51371543 4020#endif
873ef191 4021
0cb96387
GS		 4022static I32
4023read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 4024{
4025 char *p, *nl;
3280af22 4026 p = SvPVX(PL_e_script);
873ef191 4027 nl = strchr(p, '\n');
3280af22 4028 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 4029 if (nl-p == 0) {
0cb96387 4030 filter_del(read_e_script);
873ef191 4031 return 0;
7dfe3f66 4032 }
873ef191 4033 sv_catpvn(buf_sv, p, nl-p);
3280af22 4034 sv_chop(PL_e_script, nl);
873ef191
GS		 4035 return 1;
4036}
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