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Fix Cwd::getcwd() not being tainted, as noticed
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
bc89e66f 3 * Copyright (c) 1987-2001 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
acfe0abc 28static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
4d1ff10f 42#if defined(USE_5005THREADS)
06d86050
GS		 43# define INIT_TLS_AND_INTERP \
44 STMT_START { \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
47 INIT_THREADS; \
48 ALLOC_THREAD_KEY; \
49 } \
50 } STMT_END
51#else
52# if defined(USE_ITHREADS)
53# define INIT_TLS_AND_INTERP \
54 STMT_START { \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
57 INIT_THREADS; \
58 ALLOC_THREAD_KEY; \
534825c4
GS		 59 PERL_SET_THX(my_perl); \
60 OP_REFCNT_INIT; \
61 } \
62 else { \
63 PERL_SET_THX(my_perl); \
06d86050 64 } \
06d86050
GS		 65 } STMT_END
66# else
67# define INIT_TLS_AND_INTERP \
68 STMT_START { \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
71 } \
72 PERL_SET_THX(my_perl); \
73 } STMT_END
74# endif
75#endif
76
32e30700
GS		 77#ifdef PERL_IMPLICIT_SYS
78PerlInterpreter *
7766f137
GS		 79perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
84{
85 PerlInterpreter *my_perl;
32e30700
GS		 86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 88 INIT_TLS_AND_INTERP;
32e30700
GS		 89 Zero(my_perl, 1, PerlInterpreter);
90 PL_Mem = ipM;
7766f137
GS		 91 PL_MemShared = ipMS;
92 PL_MemParse = ipMP;
32e30700
GS		 93 PL_Env = ipE;
94 PL_StdIO = ipStd;
95 PL_LIO = ipLIO;
96 PL_Dir = ipD;
97 PL_Sock = ipS;
98 PL_Proc = ipP;
7766f137 99
32e30700
GS		 100 return my_perl;
101}
102#else
954c1994
GS		 103
104/*
105=for apidoc perl_alloc
106
107Allocates a new Perl interpreter. See L<perlembed>.
108
109=cut
110*/
111
93a17b20 112PerlInterpreter *
cea2e8a9 113perl_alloc(void)
79072805 114{
cea2e8a9 115 PerlInterpreter *my_perl;
79072805 116
54aff467 117 /* New() needs interpreter, so call malloc() instead */
e8ee3774 118 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 119
06d86050 120 INIT_TLS_AND_INTERP;
dedcbb81 121 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 122 return my_perl;
79072805 123}
32e30700 124#endif /* PERL_IMPLICIT_SYS */
79072805 125
954c1994
GS		 126/*
127=for apidoc perl_construct
128
129Initializes a new Perl interpreter. See L<perlembed>.
130
131=cut
132*/
133
79072805 134void
0cb96387 135perl_construct(pTHXx)
79072805 136{
4d1ff10f 137#ifdef USE_5005THREADS
a863c7d1 138#ifndef FAKE_THREADS
e1f15930 139 struct perl_thread *thr = NULL;
a863c7d1 140#endif /* FAKE_THREADS */
4d1ff10f 141#endif /* USE_5005THREADS */
ba869deb 142
8990e307 143#ifdef MULTIPLICITY
54aff467 144 init_interp();
ac27b0f5 145 PL_perl_destruct_level = 1;
54aff467
GS		 146#else
147 if (PL_perl_destruct_level > 0)
148 init_interp();
149#endif
150
33f46ff6 151 /* Init the real globals (and main thread)? */
3280af22 152 if (!PL_linestr) {
4d1ff10f 153#ifdef USE_5005THREADS
533c011a 154 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 155 /*
156 * Safe to use basic SV functions from now on (though
157 * not things like mortals or tainting yet).
158 */
533c011a
NIS		 159 MUTEX_INIT(&PL_eval_mutex);
160 COND_INIT(&PL_eval_cond);
161 MUTEX_INIT(&PL_threads_mutex);
162 COND_INIT(&PL_nthreads_cond);
ba869deb 163# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 164 MUTEX_INIT(&PL_svref_mutex);
ba869deb 165# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 166
5ff3f7a4 167 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 168 MUTEX_INIT(&PL_sv_lock_mutex);
169 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 170
199100c8 171 thr = init_main_thread();
4d1ff10f 172#endif /* USE_5005THREADS */
11343788 173
14dd3ad8 174#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 175 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 176#endif
312caa8e 177
2aea9f8a
GS		 178 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
179
3280af22
NIS		 180 PL_linestr = NEWSV(65,79);
181 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 182
3280af22 183 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 184 /* set read-only and try to insure than we wont see REFCNT==0
185 very often */
186
3280af22
NIS		 187 SvREADONLY_on(&PL_sv_undef);
188 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 189
3280af22
NIS		 190 sv_setpv(&PL_sv_no,PL_No);
191 SvNV(&PL_sv_no);
192 SvREADONLY_on(&PL_sv_no);
193 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 194
3280af22
NIS		 195 sv_setpv(&PL_sv_yes,PL_Yes);
196 SvNV(&PL_sv_yes);
197 SvREADONLY_on(&PL_sv_yes);
198 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 199 }
79072805 200
cea2e8a9 201 PL_sighandlerp = Perl_sighandler;
3280af22 202 PL_pidstatus = newHV();
44a8e56a 203
79072805
LW		 204#ifdef MSDOS
205 /*
206 * There is no way we can refer to them from Perl so close them to save
207 * space. The other alternative would be to provide STDAUX and STDPRN
208 * filehandles.
209 */
2b96b0a5
JH		 210 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
211 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
79072805
LW		 212#endif
213 }
214
79cb57f6 215 PL_nrs = newSVpvn("\n", 1);
3280af22 216 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 217
cea2e8a9 218 init_stacks();
79072805 219
748a9306 220 init_ids();
3280af22 221 PL_lex_state = LEX_NOTPARSING;
a5f75d66 222
312caa8e 223 JMPENV_BOOTSTRAP;
f86702cc 224 STATUS_ALL_SUCCESS;
225
0672f40e 226 init_i18nl10n(1);
36477c24 227 SET_NUMERIC_STANDARD();
0b5b802d 228
a7cb1f99
GS		 229 {
230 U8 *s;
231 PL_patchlevel = NEWSV(0,4);
155aba94 232 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 233 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 234 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 235 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 236 /* Build version strings using "native" characters */
237 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
238 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
239 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 240 *s = '\0';
241 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
242 SvPOK_on(PL_patchlevel);
243 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
244 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 245#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 246 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 247#endif
a7cb1f99
GS		 248 ;
249 SvNOK_on(PL_patchlevel); /* dual valued */
250 SvUTF8_on(PL_patchlevel);
251 SvREADONLY_on(PL_patchlevel);
252 }
79072805 253
ab821d7f 254#if defined(LOCAL_PATCH_COUNT)
3280af22 255 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 256#endif
257
52853b95
GS		 258#ifdef HAVE_INTERP_INTERN
259 sys_intern_init();
260#endif
261
4b556e6c 262 PerlIO_init(); /* Hook to IO system */
760ac839 263
3280af22
NIS		 264 PL_fdpid = newAV(); /* for remembering popen pids by fd */
265 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 266 PL_errors = newSVpvn("",0);
1fcf4c12 267#ifdef USE_ITHREADS
13137afc
AB		 268 PL_regex_padav = newAV();
269 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
270 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 271#endif
e5dd39fc
AB		 272#ifdef USE_REENTRANT_API
273 New(31337, PL_reentrant_buffer,1, REBUF);
274 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
275#endif
8990e307 276 ENTER;
79072805
LW		 277}
278
954c1994
GS		 279/*
280=for apidoc perl_destruct
281
282Shuts down a Perl interpreter. See L<perlembed>.
283
284=cut
285*/
286
31d77e54 287int
0cb96387 288perl_destruct(pTHXx)
79072805 289{
7c474504 290 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 291 HV *hv;
4d1ff10f 292#ifdef USE_5005THREADS
33f46ff6 293 Thread t;
cea2e8a9 294 dTHX;
4d1ff10f 295#endif /* USE_5005THREADS */
8990e307 296
7766f137
GS		 297 /* wait for all pseudo-forked children to finish */
298 PERL_WAIT_FOR_CHILDREN;
299
4d1ff10f 300#ifdef USE_5005THREADS
0f15f207 301#ifndef FAKE_THREADS
8023c3ce
MB		 302 /* Pass 1 on any remaining threads: detach joinables, join zombies */
303 retry_cleanup:
533c011a 304 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 305 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 306 "perl_destruct: waiting for %d threads...\n",
533c011a 307 PL_nthreads - 1));
33f46ff6 308 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 309 MUTEX_LOCK(&t->mutex);
310 switch (ThrSTATE(t)) {
311 AV *av;
c7848ba1 312 case THRf_ZOMBIE:
bf49b057 313 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 314 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 315 ThrSETSTATE(t, THRf_DEAD);
316 MUTEX_UNLOCK(&t->mutex);
533c011a 317 PL_nthreads--;
8023c3ce
MB		 318 /*
319 * The SvREFCNT_dec below may take a long time (e.g. av
320 * may contain an object scalar whose destructor gets
321 * called) so we have to unlock threads_mutex and start
322 * all over again.
323 */
533c011a 324 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 325 JOIN(t, &av);
605e5515 326 SvREFCNT_dec((SV*)av);
bf49b057 327 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 328 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 329 goto retry_cleanup;
c7848ba1 330 case THRf_R_JOINABLE:
bf49b057 331 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 332 "perl_destruct: detaching thread %p\n", t));
333 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 334 /*
c7848ba1
MB		 335 * We unlock threads_mutex and t->mutex in the opposite order
336 * from which we locked them just so that DETACH won't
337 * deadlock if it panics. It's only a breach of good style
338 * not a bug since they are unlocks not locks.
339 */
533c011a 340 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 341 DETACH(t);
342 MUTEX_UNLOCK(&t->mutex);
8023c3ce 343 goto retry_cleanup;
c7848ba1 344 default:
bf49b057 345 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 346 "perl_destruct: ignoring %p (state %u)\n",
347 t, ThrSTATE(t)));
348 MUTEX_UNLOCK(&t->mutex);
c7848ba1 349 /* fall through and out */
33f46ff6
MB		 350 }
351 }
8023c3ce
MB		 352 /* We leave the above "Pass 1" loop with threads_mutex still locked */
353
354 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 355 while (PL_nthreads > 1)
11343788 356 {
bf49b057 357 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 358 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 359 PL_nthreads - 1));
360 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 361 }
362 /* At this point, we're the last thread */
533c011a 363 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 364 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 365 MUTEX_DESTROY(&PL_threads_mutex);
366 COND_DESTROY(&PL_nthreads_cond);
b57a092c 367 PL_nthreads--;
0f15f207 368#endif /* !defined(FAKE_THREADS) */
4d1ff10f 369#endif /* USE_5005THREADS */
11343788 370
3280af22 371 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 372#ifdef DEBUGGING
373 {
374 char *s;
155aba94 375 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 376 int i = atoi(s);
377 if (destruct_level < i)
378 destruct_level = i;
379 }
4633a7c4
LW		 380 }
381#endif
382
31d77e54
AB		 383
384 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 385 dJMPENV;
386 int x = 0;
387
388 JMPENV_PUSH(x);
389 if (PL_endav && !PL_minus_c)
390 call_list(PL_scopestack_ix, PL_endav);
391 JMPENV_POP;
26f423df 392 }
f3faeb53 393 LEAVE;
a0d0e21e
LW		 394 FREETMPS;
395
ff0cee69 396 /* We must account for everything. */
397
398 /* Destroy the main CV and syntax tree */
3280af22
NIS		 399 if (PL_main_root) {
400 PL_curpad = AvARRAY(PL_comppad);
401 op_free(PL_main_root);
402 PL_main_root = Nullop;
a0d0e21e 403 }
3280af22
NIS		 404 PL_curcop = &PL_compiling;
405 PL_main_start = Nullop;
406 SvREFCNT_dec(PL_main_cv);
407 PL_main_cv = Nullcv;
24d3c518 408 PL_dirty = TRUE;
ff0cee69 409
13621cfb
NIS		 410 /* Tell PerlIO we are about to tear things apart in case
411 we have layers which are using resources that should
412 be cleaned up now.
413 */
414
415 PerlIO_destruct(aTHX);
416
3280af22 417 if (PL_sv_objcount) {
a0d0e21e
LW		 418 /*
419 * Try to destruct global references. We do this first so that the
420 * destructors and destructees still exist. Some sv's might remain.
421 * Non-referenced objects are on their own.
422 */
a0d0e21e 423 sv_clean_objs();
8990e307
LW		 424 }
425
5cd24f17 426 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 427 SvREFCNT_dec(PL_warnhook);
428 PL_warnhook = Nullsv;
429 SvREFCNT_dec(PL_diehook);
430 PL_diehook = Nullsv;
5cd24f17 431
4b556e6c 432 /* call exit list functions */
3280af22 433 while (PL_exitlistlen-- > 0)
acfe0abc 434 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 435
3280af22 436 Safefree(PL_exitlist);
4b556e6c 437
a0d0e21e 438 if (destruct_level == 0){
8990e307 439
a0d0e21e 440 DEBUG_P(debprofdump());
ac27b0f5 441
a0d0e21e 442 /* The exit() function will do everything that needs doing. */
31d77e54 443 return STATUS_NATIVE_EXPORT;;
a0d0e21e 444 }
5dd60ef7 445
551a8b83
JH		 446 /* jettison our possibly duplicated environment */
447
448#ifdef USE_ENVIRON_ARRAY
449 if (environ != PL_origenviron) {
450 I32 i;
451
452 for (i = 0; environ[i]; i++)
4b420006
JH		 453 safesysfree(environ[i]);
454 /* Must use safesysfree() when working with environ. */
455 safesysfree(environ);
551a8b83
JH		 456
457 environ = PL_origenviron;
458 }
459#endif
460
5f8cb046
DM		 461#ifdef USE_ITHREADS
462 /* the syntax tree is shared between clones
463 * so op_free(PL_main_root) only ReREFCNT_dec's
464 * REGEXPs in the parent interpreter
465 * we need to manually ReREFCNT_dec for the clones
466 */
467 {
468 I32 i = AvFILLp(PL_regex_padav) + 1;
469 SV **ary = AvARRAY(PL_regex_padav);
470
471 while (i) {
35061a7e
DM		 472 SV *resv = ary[--i];
473 REGEXP *re = (REGEXP *)SvIVX(resv);
474
475 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 476 /* this is PL_reg_curpm, already freed
35061a7e
DM		 477 * flag is set in regexec.c:S_regtry
478 */
479 SvFLAGS(resv) &= ~SVf_BREAK;
1cc8b4c5
AB		 480 }
481 else if(SvREPADTMP(resv)) {
482 SvREPADTMP_off(resv);
483 }
35061a7e 484 else {
5f8cb046
DM		 485 ReREFCNT_dec(re);
486 }
487 }
488 }
489 SvREFCNT_dec(PL_regex_padav);
490 PL_regex_padav = Nullav;
491 PL_regex_pad = NULL;
492#endif
493
5f05dabc 494 /* loosen bonds of global variables */
495
3280af22
NIS		 496 if(PL_rsfp) {
497 (void)PerlIO_close(PL_rsfp);
498 PL_rsfp = Nullfp;
8ebc5c01 499 }
500
501 /* Filters for program text */
3280af22
NIS		 502 SvREFCNT_dec(PL_rsfp_filters);
503 PL_rsfp_filters = Nullav;
8ebc5c01 504
505 /* switches */
3280af22
NIS		 506 PL_preprocess = FALSE;
507 PL_minus_n = FALSE;
508 PL_minus_p = FALSE;
509 PL_minus_l = FALSE;
510 PL_minus_a = FALSE;
511 PL_minus_F = FALSE;
512 PL_doswitches = FALSE;
599cee73 513 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 514 PL_doextract = FALSE;
515 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 516 PL_unsafe = FALSE;
517
518 Safefree(PL_inplace);
519 PL_inplace = Nullch;
a7cb1f99 520 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 521
522 if (PL_e_script) {
523 SvREFCNT_dec(PL_e_script);
524 PL_e_script = Nullsv;
8ebc5c01 525 }
526
bc0a45ed
DM		 527 while (--PL_origargc >= 0) {
528 Safefree(PL_origargv[PL_origargc]);
529 }
530 Safefree(PL_origargv);
531
8ebc5c01 532 /* magical thingies */
533
7889fe52
NIS		 534 SvREFCNT_dec(PL_ofs_sv); /* $, */
535 PL_ofs_sv = Nullsv;
5f05dabc 536
7889fe52
NIS		 537 SvREFCNT_dec(PL_ors_sv); /* $\ */
538 PL_ors_sv = Nullsv;
8ebc5c01 539
3280af22
NIS		 540 SvREFCNT_dec(PL_rs); /* $/ */
541 PL_rs = Nullsv;
dc92893f 542
3280af22
NIS		 543 SvREFCNT_dec(PL_nrs); /* $/ helper */
544 PL_nrs = Nullsv;
5f05dabc 545
d33b2eba
GS		 546 PL_multiline = 0; /* $* */
547 Safefree(PL_osname); /* $^O */
548 PL_osname = Nullch;
5f05dabc 549
3280af22
NIS		 550 SvREFCNT_dec(PL_statname);
551 PL_statname = Nullsv;
552 PL_statgv = Nullgv;
5f05dabc 553
8ebc5c01 554 /* defgv, aka *_ should be taken care of elsewhere */
555
8ebc5c01 556 /* clean up after study() */
3280af22
NIS		 557 SvREFCNT_dec(PL_lastscream);
558 PL_lastscream = Nullsv;
559 Safefree(PL_screamfirst);
560 PL_screamfirst = 0;
561 Safefree(PL_screamnext);
562 PL_screamnext = 0;
8ebc5c01 563
7d5ea4e7
GS		 564 /* float buffer */
565 Safefree(PL_efloatbuf);
566 PL_efloatbuf = Nullch;
567 PL_efloatsize = 0;
568
8ebc5c01 569 /* startup and shutdown function lists */
3280af22
NIS		 570 SvREFCNT_dec(PL_beginav);
571 SvREFCNT_dec(PL_endav);
7d30b5c4 572 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 573 SvREFCNT_dec(PL_initav);
574 PL_beginav = Nullav;
575 PL_endav = Nullav;
7d30b5c4 576 PL_checkav = Nullav;
3280af22 577 PL_initav = Nullav;
5618dfe8 578
8ebc5c01 579 /* shortcuts just get cleared */
3280af22 580 PL_envgv = Nullgv;
3280af22
NIS		 581 PL_incgv = Nullgv;
582 PL_hintgv = Nullgv;
583 PL_errgv = Nullgv;
584 PL_argvgv = Nullgv;
585 PL_argvoutgv = Nullgv;
586 PL_stdingv = Nullgv;
bf49b057 587 PL_stderrgv = Nullgv;
3280af22
NIS		 588 PL_last_in_gv = Nullgv;
589 PL_replgv = Nullgv;
5c831c24 590 PL_debstash = Nullhv;
8ebc5c01 591
592 /* reset so print() ends up where we expect */
593 setdefout(Nullgv);
5c831c24 594
7a1c5554
GS		 595 SvREFCNT_dec(PL_argvout_stack);
596 PL_argvout_stack = Nullav;
8ebc5c01 597
5c831c24
GS		 598 SvREFCNT_dec(PL_modglobal);
599 PL_modglobal = Nullhv;
600 SvREFCNT_dec(PL_preambleav);
601 PL_preambleav = Nullav;
602 SvREFCNT_dec(PL_subname);
603 PL_subname = Nullsv;
604 SvREFCNT_dec(PL_linestr);
605 PL_linestr = Nullsv;
606 SvREFCNT_dec(PL_pidstatus);
607 PL_pidstatus = Nullhv;
608 SvREFCNT_dec(PL_toptarget);
609 PL_toptarget = Nullsv;
610 SvREFCNT_dec(PL_bodytarget);
611 PL_bodytarget = Nullsv;
612 PL_formtarget = Nullsv;
613
d33b2eba 614 /* free locale stuff */
b9582b6a 615#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 616 Safefree(PL_collation_name);
617 PL_collation_name = Nullch;
b9582b6a 618#endif
d33b2eba 619
b9582b6a 620#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 621 Safefree(PL_numeric_name);
622 PL_numeric_name = Nullch;
a453c169 623 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 624#endif
d33b2eba 625
5c831c24
GS		 626 /* clear utf8 character classes */
627 SvREFCNT_dec(PL_utf8_alnum);
628 SvREFCNT_dec(PL_utf8_alnumc);
629 SvREFCNT_dec(PL_utf8_ascii);
630 SvREFCNT_dec(PL_utf8_alpha);
631 SvREFCNT_dec(PL_utf8_space);
632 SvREFCNT_dec(PL_utf8_cntrl);
633 SvREFCNT_dec(PL_utf8_graph);
634 SvREFCNT_dec(PL_utf8_digit);
635 SvREFCNT_dec(PL_utf8_upper);
636 SvREFCNT_dec(PL_utf8_lower);
637 SvREFCNT_dec(PL_utf8_print);
638 SvREFCNT_dec(PL_utf8_punct);
639 SvREFCNT_dec(PL_utf8_xdigit);
640 SvREFCNT_dec(PL_utf8_mark);
641 SvREFCNT_dec(PL_utf8_toupper);
642 SvREFCNT_dec(PL_utf8_tolower);
643 PL_utf8_alnum = Nullsv;
644 PL_utf8_alnumc = Nullsv;
645 PL_utf8_ascii = Nullsv;
646 PL_utf8_alpha = Nullsv;
647 PL_utf8_space = Nullsv;
648 PL_utf8_cntrl = Nullsv;
649 PL_utf8_graph = Nullsv;
650 PL_utf8_digit = Nullsv;
651 PL_utf8_upper = Nullsv;
652 PL_utf8_lower = Nullsv;
653 PL_utf8_print = Nullsv;
654 PL_utf8_punct = Nullsv;
655 PL_utf8_xdigit = Nullsv;
656 PL_utf8_mark = Nullsv;
657 PL_utf8_toupper = Nullsv;
658 PL_utf8_totitle = Nullsv;
659 PL_utf8_tolower = Nullsv;
660
971a9dd3
GS		 661 if (!specialWARN(PL_compiling.cop_warnings))
662 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 663 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 664 if (!specialCopIO(PL_compiling.cop_io))
665 SvREFCNT_dec(PL_compiling.cop_io);
666 PL_compiling.cop_io = Nullsv;
f4dd75d9
GS		 667#ifdef USE_ITHREADS
668 Safefree(CopFILE(&PL_compiling));
669 CopFILE(&PL_compiling) = Nullch;
670 Safefree(CopSTASHPV(&PL_compiling));
671#else
01724ea0 672 SvREFCNT_dec(CopFILEGV(&PL_compiling));
f4dd75d9
GS		 673 CopFILEGV(&PL_compiling) = Nullgv;
674 /* cop_stash is not refcounted */
01724ea0 675#endif
5c831c24 676
a0d0e21e 677 /* Prepare to destruct main symbol table. */
5f05dabc 678
3280af22
NIS		 679 hv = PL_defstash;
680 PL_defstash = 0;
a0d0e21e 681 SvREFCNT_dec(hv);
5c831c24
GS		 682 SvREFCNT_dec(PL_curstname);
683 PL_curstname = Nullsv;
a0d0e21e 684
5a844595
GS		 685 /* clear queued errors */
686 SvREFCNT_dec(PL_errors);
687 PL_errors = Nullsv;
688
a0d0e21e 689 FREETMPS;
0453d815 690 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 691 if (PL_scopestack_ix != 0)
0453d815
PM		 692 Perl_warner(aTHX_ WARN_INTERNAL,
693 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 694 (long)PL_scopestack_ix);
695 if (PL_savestack_ix != 0)
0453d815
PM		 696 Perl_warner(aTHX_ WARN_INTERNAL,
697 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 698 (long)PL_savestack_ix);
699 if (PL_tmps_floor != -1)
0453d815 700 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 701 (long)PL_tmps_floor + 1);
a0d0e21e 702 if (cxstack_ix != -1)
0453d815 703 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 704 (long)cxstack_ix + 1);
a0d0e21e 705 }
8990e307
LW		 706
707 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 708 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 709 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 710
711 /* the 2 is for PL_fdpid and PL_strtab */
712 while (PL_sv_count > 2 && sv_clean_all())
713 ;
714
d33b2eba
GS		 715 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
716 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 717 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
718 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 719
d4777f27
GS		 720 AvREAL_off(PL_fdpid); /* no surviving entries */
721 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 722 PL_fdpid = Nullav;
723
6c644e78
GS		 724#ifdef HAVE_INTERP_INTERN
725 sys_intern_clear();
726#endif
727
6e72f9df 728 /* Destruct the global string table. */
729 {
730 /* Yell and reset the HeVAL() slots that are still holding refcounts,
731 * so that sv_free() won't fail on them.
732 */
733 I32 riter;
734 I32 max;
735 HE *hent;
736 HE **array;
737
738 riter = 0;
3280af22
NIS		 739 max = HvMAX(PL_strtab);
740 array = HvARRAY(PL_strtab);
6e72f9df 741 hent = array[0];
742 for (;;) {
0453d815
PM		 743 if (hent && ckWARN_d(WARN_INTERNAL)) {
744 Perl_warner(aTHX_ WARN_INTERNAL,
745 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 746 HeVAL(hent) - Nullsv, HeKEY(hent));
747 HeVAL(hent) = Nullsv;
748 hent = HeNEXT(hent);
749 }
750 if (!hent) {
751 if (++riter > max)
752 break;
753 hent = array[riter];
754 }
755 }
756 }
3280af22 757 SvREFCNT_dec(PL_strtab);
6e72f9df 758
e652bb2f 759#ifdef USE_ITHREADS
a0739874
DM		 760 /* free the pointer table used for cloning */
761 ptr_table_free(PL_ptr_table);
53186e96 762#endif
a0739874 763
d33b2eba
GS		 764 /* free special SVs */
765
766 SvREFCNT(&PL_sv_yes) = 0;
767 sv_clear(&PL_sv_yes);
768 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 769 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 770
771 SvREFCNT(&PL_sv_no) = 0;
772 sv_clear(&PL_sv_no);
773 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 774 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 775
776 SvREFCNT(&PL_sv_undef) = 0;
777 SvREADONLY_off(&PL_sv_undef);
d33b2eba 778
0453d815
PM		 779 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
780 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 781
3280af22 782 Safefree(PL_origfilename);
3280af22 783 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 784 if (PL_reg_curpm)
785 Safefree(PL_reg_curpm);
82ba1be6 786 Safefree(PL_reg_poscache);
3280af22
NIS		 787 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
788 Safefree(PL_op_mask);
cf36064f
GS		 789 Safefree(PL_psig_ptr);
790 Safefree(PL_psig_name);
2c2666fc 791 Safefree(PL_bitcount);
ce08f86c 792 Safefree(PL_psig_pend);
6e72f9df 793 nuke_stacks();
3280af22 794 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 795
a0d0e21e 796 DEBUG_P(debprofdump());
4d1ff10f 797#ifdef USE_5005THREADS
5f08fbcd 798 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 799 MUTEX_DESTROY(&PL_sv_mutex);
800 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 801 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 802 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 803 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 804#ifdef EMULATE_ATOMIC_REFCOUNTS
805 MUTEX_DESTROY(&PL_svref_mutex);
806#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 807
8023c3ce 808 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 809 Safefree(SvPVX(PL_thrsv));
810 Safefree(SvANY(PL_thrsv));
811 Safefree(PL_thrsv);
812 PL_thrsv = Nullsv;
4d1ff10f 813#endif /* USE_5005THREADS */
d33b2eba 814
e5dd39fc
AB		 815#ifdef USE_REENTRANT_API
816 Safefree(PL_reentrant_buffer->tmbuff);
817 Safefree(PL_reentrant_buffer);
818#endif
819
612f20c3
GS		 820 sv_free_arenas();
821
fc36a67e 822 /* As the absolutely last thing, free the non-arena SV for mess() */
823
3280af22 824 if (PL_mess_sv) {
9c63abab
GS		 825 /* it could have accumulated taint magic */
826 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
827 MAGIC* mg;
828 MAGIC* moremagic;
829 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
830 moremagic = mg->mg_moremagic;
14befaf4
DM		 831 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
832 && mg->mg_len >= 0)
9c63abab
GS		 833 Safefree(mg->mg_ptr);
834 Safefree(mg);
835 }
836 }
fc36a67e 837 /* we know that type >= SVt_PV */
155aba94 838 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 839 Safefree(SvPVX(PL_mess_sv));
840 Safefree(SvANY(PL_mess_sv));
841 Safefree(PL_mess_sv);
842 PL_mess_sv = Nullsv;
fc36a67e 843 }
31d77e54 844 return STATUS_NATIVE_EXPORT;
79072805
LW		 845}
846
954c1994
GS		 847/*
848=for apidoc perl_free
849
850Releases a Perl interpreter. See L<perlembed>.
851
852=cut
853*/
854
79072805 855void
0cb96387 856perl_free(pTHXx)
79072805 857{
acfe0abc 858#if defined(WIN32) || defined(NETWARE)
ce3e5b80 859# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 860# ifdef NETWARE
861 void *host = nw_internal_host;
862# else
863 void *host = w32_internal_host;
864# endif
865# ifndef NETWARE
866 if (PerlProc_lasthost()) {
ce08f86c 867 PerlIO_cleanup();
acfe0abc
GS		 868 }
869# endif
ce3e5b80 870 PerlMem_free(aTHXx);
acfe0abc
GS		 871# ifdef NETWARE
872 nw5_delete_internal_host(host);
873# else
874 win32_delete_internal_host(host);
875# endif
1c0ca838 876# else
acfe0abc 877 PerlIO_cleanup();
1c0ca838
GS		 878 PerlMem_free(aTHXx);
879# endif
acfe0abc
GS		 880#else
881 PerlMem_free(aTHXx);
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;
4d1ff10f 908#ifdef USE_5005THREADS
cea2e8a9
GS		 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;
cf756827 1028 char *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
4d1ff10f
AB		 1154# ifdef USE_5005THREADS
1155 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 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_IMPLICIT_CONTEXT
1176 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1177# endif
1178# ifdef PERL_IMPLICIT_SYS
1179 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1180# endif
3280af22 1181 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1182
6224f72b
GS		 1183#if defined(LOCAL_PATCH_COUNT)
1184 if (LOCAL_PATCH_COUNT > 0) {
1185 int i;
3280af22 1186 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1187 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1188 if (PL_localpatches[i])
cea2e8a9 1189 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1190 }
1191 }
1192#endif
cea2e8a9 1193 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1194#ifdef __DATE__
1195# ifdef __TIME__
cea2e8a9 1196 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1197# else
cea2e8a9 1198 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1199# endif
1200#endif
3280af22 1201 sv_catpv(PL_Sv, "; \
6224f72b 1202$\"=\"\\n \"; \
69fcd688
JH		 1203@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1204#ifdef __CYGWIN__
1205 sv_catpv(PL_Sv,"\
1206push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1207#endif
1208 sv_catpv(PL_Sv, "\
6224f72b
GS		 1209print \" \\%ENV:\\n @env\\n\" if @env; \
1210print \" \\@INC:\\n @INC\\n\";");
1211 }
1212 else {
3280af22
NIS		 1213 PL_Sv = newSVpv("config_vars(qw(",0);
1214 sv_catpv(PL_Sv, ++s);
1215 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1216 s += strlen(s);
1217 }
3280af22 1218 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1219 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1220 goto reswitch;
1221 case 'x':
3280af22 1222 PL_doextract = TRUE;
6224f72b
GS		 1223 s++;
1224 if (*s)
f4c556ac 1225 cddir = s;
6224f72b
GS		 1226 break;
1227 case 0:
1228 break;
1229 case '-':
1230 if (!*++s || isSPACE(*s)) {
1231 argc--,argv++;
1232 goto switch_end;
1233 }
1234 /* catch use of gnu style long options */
1235 if (strEQ(s, "version")) {
1236 s = "v";
1237 goto reswitch;
1238 }
1239 if (strEQ(s, "help")) {
1240 s = "h";
1241 goto reswitch;
1242 }
1243 s--;
1244 /* FALL THROUGH */
1245 default:
cea2e8a9 1246 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1247 }
1248 }
6224f72b 1249 switch_end:
54310121 1250
f675dbe5
CB		 1251 if (
1252#ifndef SECURE_INTERNAL_GETENV
1253 !PL_tainting &&
1254#endif
cf756827 1255 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1256 {
cf756827 1257 char *popt = s;
74288ac8
GS		 1258 while (isSPACE(*s))
1259 s++;
1260 if (*s == '-' && *(s+1) == 'T')
1261 PL_tainting = TRUE;
1262 else {
cf756827 1263 char *popt_copy = Nullch;
74288ac8 1264 while (s && *s) {
4ea8f8fb 1265 char *d;
74288ac8
GS		 1266 while (isSPACE(*s))
1267 s++;
1268 if (*s == '-') {
1269 s++;
1270 if (isSPACE(*s))
1271 continue;
1272 }
4ea8f8fb 1273 d = s;
74288ac8
GS		 1274 if (!*s)
1275 break;
1276 if (!strchr("DIMUdmw", *s))
cea2e8a9 1277 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1278 while (++s && *s) {
1279 if (isSPACE(*s)) {
cf756827
GS		 1280 if (!popt_copy) {
1281 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1282 s = popt_copy + (s - popt);
1283 d = popt_copy + (d - popt);
1284 }
4ea8f8fb
MS		 1285 *s++ = '\0';
1286 break;
1287 }
1288 }
1289 moreswitches(d);
6224f72b 1290 }
6224f72b
GS		 1291 }
1292 }
a0d0e21e 1293
6224f72b
GS		 1294 if (!scriptname)
1295 scriptname = argv[0];
3280af22 1296 if (PL_e_script) {
6224f72b
GS		 1297 argc++,argv--;
1298 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1299 }
1300 else if (scriptname == Nullch) {
1301#ifdef MSDOS
1302 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1303 moreswitches("h");
1304#endif
1305 scriptname = "-";
1306 }
1307
1308 init_perllib();
1309
1310 open_script(scriptname,dosearch,sv,&fdscript);
1311
1312 validate_suid(validarg, scriptname,fdscript);
1313
64ca3a65 1314#ifndef PERL_MICRO
0b5b802d
GS		 1315#if defined(SIGCHLD) || defined(SIGCLD)
1316 {
1317#ifndef SIGCHLD
1318# define SIGCHLD SIGCLD
1319#endif
1320 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1321 if (sigstate == SIG_IGN) {
1322 if (ckWARN(WARN_SIGNAL))
1323 Perl_warner(aTHX_ WARN_SIGNAL,
1324 "Can't ignore signal CHLD, forcing to default");
1325 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1326 }
1327 }
1328#endif
64ca3a65 1329#endif
0b5b802d 1330
bf4acbe4
GS		 1331#ifdef MACOS_TRADITIONAL
1332 if (PL_doextract || gMacPerl_AlwaysExtract) {
1333#else
f4c556ac 1334 if (PL_doextract) {
bf4acbe4 1335#endif
6224f72b 1336 find_beginning();
f4c556ac
GS		 1337 if (cddir && PerlDir_chdir(cddir) < 0)
1338 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1339
1340 }
6224f72b 1341
3280af22
NIS		 1342 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1343 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1344 CvUNIQUE_on(PL_compcv);
1345
1346 PL_comppad = newAV();
1347 av_push(PL_comppad, Nullsv);
1348 PL_curpad = AvARRAY(PL_comppad);
1349 PL_comppad_name = newAV();
1350 PL_comppad_name_fill = 0;
1351 PL_min_intro_pending = 0;
1352 PL_padix = 0;
4d1ff10f 1353#ifdef USE_5005THREADS
79cb57f6 1354 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1355 PL_curpad[0] = (SV*)newAV();
1356 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1357 CvOWNER(PL_compcv) = 0;
1358 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1359 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1360#endif /* USE_5005THREADS */
6224f72b
GS		 1361
1362 comppadlist = newAV();
1363 AvREAL_off(comppadlist);
3280af22
NIS		 1364 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1365 av_store(comppadlist, 1, (SV*)PL_comppad);
1366 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1367
0c4f7ff0 1368 boot_core_PerlIO();
6224f72b 1369 boot_core_UNIVERSAL();
9a34ef1d 1370#ifndef PERL_MICRO
09bef843 1371 boot_core_xsutils();
9a34ef1d 1372#endif
6224f72b
GS		 1373
1374 if (xsinit)
acfe0abc 1375 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1376#ifndef PERL_MICRO
ed79a026 1377#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1378 init_os_extras();
6224f72b 1379#endif
64ca3a65 1380#endif
6224f72b 1381
29209bc5 1382#ifdef USE_SOCKS
1b9c9cf5
DH		 1383# ifdef HAS_SOCKS5_INIT
1384 socks5_init(argv[0]);
1385# else
29209bc5 1386 SOCKSinit(argv[0]);
1b9c9cf5 1387# endif
ac27b0f5 1388#endif
29209bc5 1389
6224f72b
GS		 1390 init_predump_symbols();
1391 /* init_postdump_symbols not currently designed to be called */
1392 /* more than once (ENV isn't cleared first, for example) */
1393 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1394 if (!PL_do_undump)
6224f72b
GS		 1395 init_postdump_symbols(argc,argv,env);
1396
1397 init_lexer();
1398
1399 /* now parse the script */
1400
1401 SETERRNO(0,SS$_NORMAL);
3280af22 1402 PL_error_count = 0;
bf4acbe4
GS		 1403#ifdef MACOS_TRADITIONAL
1404 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1405 if (PL_minus_c)
1406 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1407 else {
1408 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1409 MacPerl_MPWFileName(PL_origfilename));
1410 }
1411 }
1412#else
3280af22
NIS		 1413 if (yyparse() || PL_error_count) {
1414 if (PL_minus_c)
cea2e8a9 1415 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1416 else {
cea2e8a9 1417 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1418 PL_origfilename);
6224f72b
GS		 1419 }
1420 }
bf4acbe4 1421#endif
57843af0 1422 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1423 PL_curstash = PL_defstash;
1424 PL_preprocess = FALSE;
1425 if (PL_e_script) {
1426 SvREFCNT_dec(PL_e_script);
1427 PL_e_script = Nullsv;
6224f72b
GS		 1428 }
1429
1430 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1431 SvREFCNT_dec(PL_rs);
1432 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1433 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1434 if (PL_do_undump)
6224f72b
GS		 1435 my_unexec();
1436
57843af0
GS		 1437 if (isWARN_ONCE) {
1438 SAVECOPFILE(PL_curcop);
1439 SAVECOPLINE(PL_curcop);
3280af22 1440 gv_check(PL_defstash);
57843af0 1441 }
6224f72b
GS		 1442
1443 LEAVE;
1444 FREETMPS;
1445
1446#ifdef MYMALLOC
1447 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1448 dump_mstats("after compilation:");
1449#endif
1450
1451 ENTER;
3280af22 1452 PL_restartop = 0;
312caa8e 1453 return NULL;
6224f72b
GS		 1454}
1455
954c1994
GS		 1456/*
1457=for apidoc perl_run
1458
1459Tells a Perl interpreter to run. See L<perlembed>.
1460
1461=cut
1462*/
1463
6224f72b 1464int
0cb96387 1465perl_run(pTHXx)
6224f72b 1466{
6224f72b 1467 I32 oldscope;
14dd3ad8 1468 int ret = 0;
db36c5a1 1469 dJMPENV;
4d1ff10f 1470#ifdef USE_5005THREADS
cea2e8a9
GS		 1471 dTHX;
1472#endif
6224f72b 1473
3280af22 1474 oldscope = PL_scopestack_ix;
6224f72b 1475
14dd3ad8 1476#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1477 redo_body:
14dd3ad8
GS		 1478 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1479#else
1480 JMPENV_PUSH(ret);
1481#endif
6224f72b
GS		 1482 switch (ret) {
1483 case 1:
1484 cxstack_ix = -1; /* start context stack again */
312caa8e 1485 goto redo_body;
14dd3ad8
GS		 1486 case 0: /* normal completion */
1487#ifndef PERL_FLEXIBLE_EXCEPTIONS
1488 redo_body:
1489 run_body(oldscope);
1490#endif
1491 /* FALL THROUGH */
1492 case 2: /* my_exit() */
3280af22 1493 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1494 LEAVE;
1495 FREETMPS;
3280af22 1496 PL_curstash = PL_defstash;
31d77e54
AB		 1497 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1498 PL_endav && !PL_minus_c)
1499 call_list(oldscope, PL_endav);
6224f72b
GS		 1500#ifdef MYMALLOC
1501 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1502 dump_mstats("after execution: ");
1503#endif
14dd3ad8
GS		 1504 ret = STATUS_NATIVE_EXPORT;
1505 break;
6224f72b 1506 case 3:
312caa8e
CS		 1507 if (PL_restartop) {
1508 POPSTACK_TO(PL_mainstack);
1509 goto redo_body;
6224f72b 1510 }
bf49b057 1511 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1512 FREETMPS;
14dd3ad8
GS		 1513 ret = 1;
1514 break;
6224f72b
GS		 1515 }
1516
14dd3ad8
GS		 1517 JMPENV_POP;
1518 return ret;
312caa8e
CS		 1519}
1520
14dd3ad8 1521#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1522STATIC void *
14dd3ad8 1523S_vrun_body(pTHX_ va_list args)
312caa8e 1524{
312caa8e
CS		 1525 I32 oldscope = va_arg(args, I32);
1526
14dd3ad8
GS		 1527 return run_body(oldscope);
1528}
1529#endif
1530
1531
1532STATIC void *
1533S_run_body(pTHX_ I32 oldscope)
1534{
6224f72b 1535 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1536 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1537
3280af22 1538 if (!PL_restartop) {
6224f72b
GS		 1539 DEBUG_x(dump_all());
1540 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1541 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1542 PTR2UV(thr)));
6224f72b 1543
3280af22 1544 if (PL_minus_c) {
bf4acbe4
GS		 1545#ifdef MACOS_TRADITIONAL
1546 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1547#else
bf49b057 1548 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1549#endif
6224f72b
GS		 1550 my_exit(0);
1551 }
3280af22 1552 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1553 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1554 if (PL_initav)
1555 call_list(oldscope, PL_initav);
6224f72b
GS		 1556 }
1557
1558 /* do it */
1559
3280af22 1560 if (PL_restartop) {
533c011a 1561 PL_op = PL_restartop;
3280af22 1562 PL_restartop = 0;
cea2e8a9 1563 CALLRUNOPS(aTHX);
6224f72b 1564 }
3280af22
NIS		 1565 else if (PL_main_start) {
1566 CvDEPTH(PL_main_cv) = 1;
533c011a 1567 PL_op = PL_main_start;
cea2e8a9 1568 CALLRUNOPS(aTHX);
6224f72b
GS		 1569 }
1570
f6b3007c
JH		 1571 my_exit(0);
1572 /* NOTREACHED */
312caa8e 1573 return NULL;
6224f72b
GS		 1574}
1575
954c1994
GS		 1576/*
1577=for apidoc p||get_sv
1578
1579Returns the SV of the specified Perl scalar. If C<create> is set and the
1580Perl variable does not exist then it will be created. If C<create> is not
1581set and the variable does not exist then NULL is returned.
1582
1583=cut
1584*/
1585
6224f72b 1586SV*
864dbfa3 1587Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1588{
1589 GV *gv;
4d1ff10f 1590#ifdef USE_5005THREADS
6224f72b
GS		 1591 if (name[1] == '\0' && !isALPHA(name[0])) {
1592 PADOFFSET tmp = find_threadsv(name);
411caa50 1593 if (tmp != NOT_IN_PAD)
6224f72b 1594 return THREADSV(tmp);
6224f72b 1595 }
4d1ff10f 1596#endif /* USE_5005THREADS */
6224f72b
GS		 1597 gv = gv_fetchpv(name, create, SVt_PV);
1598 if (gv)
1599 return GvSV(gv);
1600 return Nullsv;
1601}
1602
954c1994
GS		 1603/*
1604=for apidoc p||get_av
1605
1606Returns the AV of the specified Perl array. If C<create> is set and the
1607Perl variable does not exist then it will be created. If C<create> is not
1608set and the variable does not exist then NULL is returned.
1609
1610=cut
1611*/
1612
6224f72b 1613AV*
864dbfa3 1614Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1615{
1616 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1617 if (create)
1618 return GvAVn(gv);
1619 if (gv)
1620 return GvAV(gv);
1621 return Nullav;
1622}
1623
954c1994
GS		 1624/*
1625=for apidoc p||get_hv
1626
1627Returns the HV of the specified Perl hash. If C<create> is set and the
1628Perl variable does not exist then it will be created. If C<create> is not
1629set and the variable does not exist then NULL is returned.
1630
1631=cut
1632*/
1633
6224f72b 1634HV*
864dbfa3 1635Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1636{
a0d0e21e
LW		 1637 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1638 if (create)
1639 return GvHVn(gv);
1640 if (gv)
1641 return GvHV(gv);
1642 return Nullhv;
1643}
1644
954c1994
GS		 1645/*
1646=for apidoc p||get_cv
1647
1648Returns the CV of the specified Perl subroutine. If C<create> is set and
1649the Perl subroutine does not exist then it will be declared (which has the
1650same effect as saying C<sub name;>). If C<create> is not set and the
1651subroutine does not exist then NULL is returned.
1652
1653=cut
1654*/
1655
a0d0e21e 1656CV*
864dbfa3 1657Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1658{
1659 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1660 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1661 /* XXX this is probably not what they think they're getting.
1662 * It has the same effect as "sub name;", i.e. just a forward
1663 * declaration! */
8ebc5c01 1664 if (create && !GvCVu(gv))
774d564b 1665 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1666 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1667 Nullop,
a0d0e21e
LW		 1668 Nullop);
1669 if (gv)
8ebc5c01 1670 return GvCVu(gv);
a0d0e21e
LW		 1671 return Nullcv;
1672}
1673
79072805
LW		 1674/* Be sure to refetch the stack pointer after calling these routines. */
1675
954c1994
GS		 1676/*
1677=for apidoc p||call_argv
1678
1679Performs a callback to the specified Perl sub. See L<perlcall>.
1680
1681=cut
1682*/
1683
a0d0e21e 1684I32
864dbfa3 1685Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1686
8ac85365
NIS		 1687 /* See G_* flags in cop.h */
1688 /* null terminated arg list */
8990e307 1689{
a0d0e21e 1690 dSP;
8990e307 1691
924508f0 1692 PUSHMARK(SP);
a0d0e21e 1693 if (argv) {
8990e307 1694 while (*argv) {
a0d0e21e 1695 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1696 argv++;
1697 }
a0d0e21e 1698 PUTBACK;
8990e307 1699 }
864dbfa3 1700 return call_pv(sub_name, flags);
8990e307
LW		 1701}
1702
954c1994
GS		 1703/*
1704=for apidoc p||call_pv
1705
1706Performs a callback to the specified Perl sub. See L<perlcall>.
1707
1708=cut
1709*/
1710
a0d0e21e 1711I32
864dbfa3 1712Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1713 /* name of the subroutine */
1714 /* See G_* flags in cop.h */
a0d0e21e 1715{
864dbfa3 1716 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1717}
1718
954c1994
GS		 1719/*
1720=for apidoc p||call_method
1721
1722Performs a callback to the specified Perl method. The blessed object must
1723be on the stack. See L<perlcall>.
1724
1725=cut
1726*/
1727
a0d0e21e 1728I32
864dbfa3 1729Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1730 /* name of the subroutine */
1731 /* See G_* flags in cop.h */
a0d0e21e 1732{
968b3946 1733 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1734}
1735
1736/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1737/*
1738=for apidoc p||call_sv
1739
1740Performs a callback to the Perl sub whose name is in the SV. See
1741L<perlcall>.
1742
1743=cut
1744*/
1745
a0d0e21e 1746I32
864dbfa3 1747Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1748 /* See G_* flags in cop.h */
a0d0e21e 1749{
924508f0 1750 dSP;
a0d0e21e 1751 LOGOP myop; /* fake syntax tree node */
968b3946 1752 UNOP method_op;
aa689395 1753 I32 oldmark;
13689cfe 1754 volatile I32 retval = 0;
a0d0e21e 1755 I32 oldscope;
54310121 1756 bool oldcatch = CATCH_GET;
6224f72b 1757 int ret;
533c011a 1758 OP* oldop = PL_op;
db36c5a1 1759 dJMPENV;
1e422769 1760
a0d0e21e
LW		 1761 if (flags & G_DISCARD) {
1762 ENTER;
1763 SAVETMPS;
1764 }
1765
aa689395 1766 Zero(&myop, 1, LOGOP);
54310121 1767 myop.op_next = Nullop;
f51d4af5 1768 if (!(flags & G_NOARGS))
aa689395 1769 myop.op_flags |= OPf_STACKED;
54310121 1770 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1771 (flags & G_ARRAY) ? OPf_WANT_LIST :
1772 OPf_WANT_SCALAR);
462e5cf6 1773 SAVEOP();
533c011a 1774 PL_op = (OP*)&myop;
aa689395 1775
3280af22
NIS		 1776 EXTEND(PL_stack_sp, 1);
1777 *++PL_stack_sp = sv;
aa689395 1778 oldmark = TOPMARK;
3280af22 1779 oldscope = PL_scopestack_ix;
a0d0e21e 1780
3280af22 1781 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1782 /* Handle first BEGIN of -d. */
3280af22 1783 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1784 /* Try harder, since this may have been a sighandler, thus
1785 * curstash may be meaningless. */
3280af22 1786 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1787 && !(flags & G_NODEBUG))
533c011a 1788 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1789
968b3946
GS		 1790 if (flags & G_METHOD) {
1791 Zero(&method_op, 1, UNOP);
1792 method_op.op_next = PL_op;
1793 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1794 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1795 PL_op = (OP*)&method_op;
968b3946
GS		 1796 }
1797
312caa8e 1798 if (!(flags & G_EVAL)) {
0cdb2077 1799 CATCH_SET(TRUE);
14dd3ad8 1800 call_body((OP*)&myop, FALSE);
312caa8e 1801 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1802 CATCH_SET(oldcatch);
312caa8e
CS		 1803 }
1804 else {
d78bda3d 1805 myop.op_other = (OP*)&myop;
3280af22 1806 PL_markstack_ptr--;
4633a7c4
LW		 1807 /* we're trying to emulate pp_entertry() here */
1808 {
c09156bb 1809 register PERL_CONTEXT *cx;
54310121 1810 I32 gimme = GIMME_V;
ac27b0f5 1811
4633a7c4
LW		 1812 ENTER;
1813 SAVETMPS;
ac27b0f5 1814
968b3946 1815 push_return(Nullop);
1d76a5c3 1816 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1817 PUSHEVAL(cx, 0, 0);
533c011a 1818 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1819
faef0170 1820 PL_in_eval = EVAL_INEVAL;
4633a7c4 1821 if (flags & G_KEEPERR)
faef0170 1822 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1823 else
38a03e6e 1824 sv_setpv(ERRSV,"");
4633a7c4 1825 }
3280af22 1826 PL_markstack_ptr++;
a0d0e21e 1827
14dd3ad8
GS		 1828#ifdef PERL_FLEXIBLE_EXCEPTIONS
1829 redo_body:
1830 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1831 (OP*)&myop, FALSE);
14dd3ad8
GS		 1832#else
1833 JMPENV_PUSH(ret);
1834#endif
6224f72b
GS		 1835 switch (ret) {
1836 case 0:
14dd3ad8
GS		 1837#ifndef PERL_FLEXIBLE_EXCEPTIONS
1838 redo_body:
1839 call_body((OP*)&myop, FALSE);
1840#endif
312caa8e
CS		 1841 retval = PL_stack_sp - (PL_stack_base + oldmark);
1842 if (!(flags & G_KEEPERR))
1843 sv_setpv(ERRSV,"");
a0d0e21e 1844 break;
6224f72b 1845 case 1:
f86702cc 1846 STATUS_ALL_FAILURE;
a0d0e21e 1847 /* FALL THROUGH */
6224f72b 1848 case 2:
a0d0e21e 1849 /* my_exit() was called */
3280af22 1850 PL_curstash = PL_defstash;
a0d0e21e 1851 FREETMPS;
14dd3ad8 1852 JMPENV_POP;
cc3604b1 1853 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1854 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1855 my_exit_jump();
a0d0e21e 1856 /* NOTREACHED */
6224f72b 1857 case 3:
3280af22 1858 if (PL_restartop) {
533c011a 1859 PL_op = PL_restartop;
3280af22 1860 PL_restartop = 0;
312caa8e 1861 goto redo_body;
a0d0e21e 1862 }
3280af22 1863 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1864 if (flags & G_ARRAY)
1865 retval = 0;
1866 else {
1867 retval = 1;
3280af22 1868 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1869 }
312caa8e 1870 break;
a0d0e21e 1871 }
a0d0e21e 1872
3280af22 1873 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1874 SV **newsp;
1875 PMOP *newpm;
1876 I32 gimme;
c09156bb 1877 register PERL_CONTEXT *cx;
a0a2876f
LW		 1878 I32 optype;
1879
1880 POPBLOCK(cx,newpm);
1881 POPEVAL(cx);
1882 pop_return();
3280af22 1883 PL_curpm = newpm;
a0a2876f 1884 LEAVE;
a0d0e21e 1885 }
14dd3ad8 1886 JMPENV_POP;
a0d0e21e 1887 }
1e422769 1888
a0d0e21e 1889 if (flags & G_DISCARD) {
3280af22 1890 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1891 retval = 0;
1892 FREETMPS;
1893 LEAVE;
1894 }
533c011a 1895 PL_op = oldop;
a0d0e21e
LW		 1896 return retval;
1897}
1898
14dd3ad8 1899#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1900STATIC void *
14dd3ad8 1901S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1902{
1903 OP *myop = va_arg(args, OP*);
1904 int is_eval = va_arg(args, int);
1905
14dd3ad8 1906 call_body(myop, is_eval);
312caa8e
CS		 1907 return NULL;
1908}
14dd3ad8 1909#endif
312caa8e
CS		 1910
1911STATIC void
14dd3ad8 1912S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1913{
312caa8e
CS		 1914 if (PL_op == myop) {
1915 if (is_eval)
f807eda9 1916 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1917 else
f807eda9 1918 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1919 }
1920 if (PL_op)
cea2e8a9 1921 CALLRUNOPS(aTHX);
312caa8e
CS		 1922}
1923
6e72f9df 1924/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1925
954c1994
GS		 1926/*
1927=for apidoc p||eval_sv
1928
1929Tells Perl to C<eval> the string in the SV.
1930
1931=cut
1932*/
1933
a0d0e21e 1934I32
864dbfa3 1935Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1936
8ac85365 1937 /* See G_* flags in cop.h */
a0d0e21e 1938{
924508f0 1939 dSP;
a0d0e21e 1940 UNOP myop; /* fake syntax tree node */
8fa7f367 1941 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1942 volatile I32 retval = 0;
4633a7c4 1943 I32 oldscope;
6224f72b 1944 int ret;
533c011a 1945 OP* oldop = PL_op;
db36c5a1 1946 dJMPENV;
84902520 1947
4633a7c4
LW		 1948 if (flags & G_DISCARD) {
1949 ENTER;
1950 SAVETMPS;
1951 }
1952
462e5cf6 1953 SAVEOP();
533c011a
NIS		 1954 PL_op = (OP*)&myop;
1955 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1956 EXTEND(PL_stack_sp, 1);
1957 *++PL_stack_sp = sv;
1958 oldscope = PL_scopestack_ix;
79072805 1959
4633a7c4
LW		 1960 if (!(flags & G_NOARGS))
1961 myop.op_flags = OPf_STACKED;
79072805 1962 myop.op_next = Nullop;
6e72f9df 1963 myop.op_type = OP_ENTEREVAL;
54310121 1964 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1965 (flags & G_ARRAY) ? OPf_WANT_LIST :
1966 OPf_WANT_SCALAR);
6e72f9df 1967 if (flags & G_KEEPERR)
1968 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1969
14dd3ad8 1970#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1971 redo_body:
14dd3ad8 1972 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1973 (OP*)&myop, TRUE);
14dd3ad8
GS		 1974#else
1975 JMPENV_PUSH(ret);
1976#endif
6224f72b
GS		 1977 switch (ret) {
1978 case 0:
14dd3ad8
GS		 1979#ifndef PERL_FLEXIBLE_EXCEPTIONS
1980 redo_body:
1981 call_body((OP*)&myop,TRUE);
1982#endif
312caa8e
CS		 1983 retval = PL_stack_sp - (PL_stack_base + oldmark);
1984 if (!(flags & G_KEEPERR))
1985 sv_setpv(ERRSV,"");
4633a7c4 1986 break;
6224f72b 1987 case 1:
f86702cc 1988 STATUS_ALL_FAILURE;
4633a7c4 1989 /* FALL THROUGH */
6224f72b 1990 case 2:
4633a7c4 1991 /* my_exit() was called */
3280af22 1992 PL_curstash = PL_defstash;
4633a7c4 1993 FREETMPS;
14dd3ad8 1994 JMPENV_POP;
cc3604b1 1995 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1996 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1997 my_exit_jump();
4633a7c4 1998 /* NOTREACHED */
6224f72b 1999 case 3:
3280af22 2000 if (PL_restartop) {
533c011a 2001 PL_op = PL_restartop;
3280af22 2002 PL_restartop = 0;
312caa8e 2003 goto redo_body;
4633a7c4 2004 }
3280af22 2005 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2006 if (flags & G_ARRAY)
2007 retval = 0;
2008 else {
2009 retval = 1;
3280af22 2010 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2011 }
312caa8e 2012 break;
4633a7c4
LW		 2013 }
2014
14dd3ad8 2015 JMPENV_POP;
4633a7c4 2016 if (flags & G_DISCARD) {
3280af22 2017 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2018 retval = 0;
2019 FREETMPS;
2020 LEAVE;
2021 }
533c011a 2022 PL_op = oldop;
4633a7c4
LW		 2023 return retval;
2024}
2025
954c1994
GS		 2026/*
2027=for apidoc p||eval_pv
2028
2029Tells Perl to C<eval> the given string and return an SV* result.
2030
2031=cut
2032*/
2033
137443ea 2034SV*
864dbfa3 2035Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2036{
2037 dSP;
2038 SV* sv = newSVpv(p, 0);
2039
864dbfa3 2040 eval_sv(sv, G_SCALAR);
137443ea 2041 SvREFCNT_dec(sv);
2042
2043 SPAGAIN;
2044 sv = POPs;
2045 PUTBACK;
2046
2d8e6c8d
GS		 2047 if (croak_on_error && SvTRUE(ERRSV)) {
2048 STRLEN n_a;
cea2e8a9 2049 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2050 }
137443ea 2051
2052 return sv;
2053}
2054
4633a7c4
LW		 2055/* Require a module. */
2056
954c1994
GS		 2057/*
2058=for apidoc p||require_pv
2059
7d3fb230
BS		 2060Tells Perl to C<require> the file named by the string argument. It is
2061analogous to the Perl code C<eval "require '$file'">. It's even
2062implemented that way; consider using Perl_load_module instead.
954c1994 2063
7d3fb230 2064=cut */
954c1994 2065
4633a7c4 2066void
864dbfa3 2067Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2068{
d3acc0f7
JP		 2069 SV* sv;
2070 dSP;
e788e7d3 2071 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2072 PUTBACK;
2073 sv = sv_newmortal();
4633a7c4
LW		 2074 sv_setpv(sv, "require '");
2075 sv_catpv(sv, pv);
2076 sv_catpv(sv, "'");
864dbfa3 2077 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2078 SPAGAIN;
2079 POPSTACK;
79072805
LW		 2080}
2081
79072805 2082void
864dbfa3 2083Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2084{
2085 register GV *gv;
2086
155aba94 2087 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2088 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2089}
2090
76e3520e 2091STATIC void
cea2e8a9 2092S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2093{
ab821d7f 2094 /* This message really ought to be max 23 lines.
75c72d73 2095 * Removed -h because the user already knows that option. Others? */
fb73857a 2096
76e3520e 2097 static char *usage_msg[] = {
fb73857a 2098"-0[octal] specify record separator (\\0, if no argument)",
2099"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2100"-C enable native wide character system interfaces",
1950ee41 2101"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2102"-d[:debugger] run program under debugger",
2103"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2104"-e 'command' one line of program (several -e's allowed, omit programfile)",
2105"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2106"-i[extension] edit <> files in place (makes backup if extension supplied)",
2107"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2108"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2109"-[mM][-]module execute `use/no module...' before executing program",
2110"-n assume 'while (<>) { ... }' loop around program",
2111"-p assume loop like -n but print line also, like sed",
2112"-P run program through C preprocessor before compilation",
2113"-s enable rudimentary parsing for switches after programfile",
2114"-S look for programfile using PATH environment variable",
2115"-T enable tainting checks",
2116"-u dump core after parsing program",
fb73857a 2117"-U allow unsafe operations",
aac3bd0d
GS		 2118"-v print version, subversion (includes VERY IMPORTANT perl info)",
2119"-V[:variable] print configuration summary (or a single Config.pm variable)",
2120"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2121"-W enable all warnings",
2122"-X disable all warnings",
fb73857a 2123"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2124"\n",
2125NULL
2126};
76e3520e 2127 char **p = usage_msg;
fb73857a 2128
b0e47665
GS		 2129 PerlIO_printf(PerlIO_stdout(),
2130 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2131 name);
fb73857a 2132 while (*p)
b0e47665 2133 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2134}
2135
79072805
LW		 2136/* This routine handles any switches that can be given during run */
2137
2138char *
864dbfa3 2139Perl_moreswitches(pTHX_ char *s)
79072805 2140{
ba210ebe 2141 STRLEN numlen;
c07a80fd 2142 U32 rschar;
79072805
LW		 2143
2144 switch (*s) {
2145 case '0':
a863c7d1 2146 {
b21ed0a9 2147 numlen = 0; /* disallow underscores */
dff6d3cd 2148 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 2149 SvREFCNT_dec(PL_nrs);
c07a80fd 2150 if (rschar & ~((U8)~0))
3280af22 2151 PL_nrs = &PL_sv_undef;
c07a80fd 2152 else if (!rschar && numlen >= 2)
79cb57f6 2153 PL_nrs = newSVpvn("", 0);
c07a80fd 2154 else {
2155 char ch = rschar;
79cb57f6 2156 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 2157 }
2158 return s + numlen;
a863c7d1 2159 }
46487f74
GS		 2160 case 'C':
2161 PL_widesyscalls = TRUE;
2162 s++;
2163 return s;
2304df62 2164 case 'F':
3280af22
NIS		 2165 PL_minus_F = TRUE;
2166 PL_splitstr = savepv(s + 1);
2304df62
AD		 2167 s += strlen(s);
2168 return s;
79072805 2169 case 'a':
3280af22 2170 PL_minus_a = TRUE;
79072805
LW		 2171 s++;
2172 return s;
2173 case 'c':
3280af22 2174 PL_minus_c = TRUE;
79072805
LW		 2175 s++;
2176 return s;
2177 case 'd':
bbce6d69 2178 forbid_setid("-d");
4633a7c4 2179 s++;
70c94a19
RR		 2180 /* The following permits -d:Mod to accepts arguments following an =
2181 in the fashion that -MSome::Mod does. */
2182 if (*s == ':' || *s == '=') {
2183 char *start;
2184 SV *sv;
2185 sv = newSVpv("use Devel::", 0);
2186 start = ++s;
2187 /* We now allow -d:Module=Foo,Bar */
2188 while(isALNUM(*s) || *s==':') ++s;
2189 if (*s != '=')
2190 sv_catpv(sv, start);
2191 else {
2192 sv_catpvn(sv, start, s-start);
2193 sv_catpv(sv, " split(/,/,q{");
2194 sv_catpv(sv, ++s);
2195 sv_catpv(sv, "})");
2196 }
4633a7c4 2197 s += strlen(s);
70c94a19 2198 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2199 }
ed094faf 2200 if (!PL_perldb) {
3280af22 2201 PL_perldb = PERLDB_ALL;
a0d0e21e 2202 init_debugger();
ed094faf 2203 }
79072805
LW		 2204 return s;
2205 case 'D':
0453d815 2206 {
79072805 2207#ifdef DEBUGGING
bbce6d69 2208 forbid_setid("-D");
79072805 2209 if (isALPHA(s[1])) {
04932ac8
DM		 2210 /* if adding extra options, remember to update DEBUG_MASK */
2211 static char debopts[] = "psltocPmfrxuLHXDSTR";
79072805
LW		 2212 char *d;
2213
93a17b20 2214 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2215 PL_debug |= 1 << (d - debopts);
79072805
LW		 2216 }
2217 else {
3280af22 2218 PL_debug = atoi(s+1);
79072805
LW		 2219 for (s++; isDIGIT(*s); s++) ;
2220 }
aea4f609 2221 PL_debug |= DEBUG_TOP_FLAG;
79072805 2222#else
0453d815
PM		 2223 if (ckWARN_d(WARN_DEBUGGING))
2224 Perl_warner(aTHX_ WARN_DEBUGGING,
2225 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2226 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2227#endif
2228 /*SUPPRESS 530*/
2229 return s;
0453d815 2230 }
4633a7c4 2231 case 'h':
ac27b0f5 2232 usage(PL_origargv[0]);
6ad3d225 2233 PerlProc_exit(0);
79072805 2234 case 'i':
3280af22
NIS		 2235 if (PL_inplace)
2236 Safefree(PL_inplace);
2237 PL_inplace = savepv(s+1);
79072805 2238 /*SUPPRESS 530*/
3280af22 2239 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2240 if (*s) {
fb73857a 2241 *s++ = '\0';
7b8d334a
GS		 2242 if (*s == '-') /* Additional switches on #! line. */
2243 s++;
2244 }
fb73857a 2245 return s;
2246 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 2247 forbid_setid("-I");
fb73857a 2248 ++s;
2249 while (*s && isSPACE(*s))
2250 ++s;
2251 if (*s) {
774d564b 2252 char *e, *p;
0df16ed7
GS		 2253 p = s;
2254 /* ignore trailing spaces (possibly followed by other switches) */
2255 do {
2256 for (e = p; *e && !isSPACE(*e); e++) ;
2257 p = e;
2258 while (isSPACE(*p))
2259 p++;
2260 } while (*p && *p != '-');
2261 e = savepvn(s, e-s);
9c8a64f0 2262 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2263 Safefree(e);
2264 s = p;
2265 if (*s == '-')
2266 s++;
79072805
LW		 2267 }
2268 else
a67e862a 2269 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2270 return s;
79072805 2271 case 'l':
3280af22 2272 PL_minus_l = TRUE;
79072805 2273 s++;
7889fe52
NIS		 2274 if (PL_ors_sv) {
2275 SvREFCNT_dec(PL_ors_sv);
2276 PL_ors_sv = Nullsv;
2277 }
79072805 2278 if (isDIGIT(*s)) {
7889fe52 2279 PL_ors_sv = newSVpvn("\n",1);
b21ed0a9 2280 numlen = 0; /* disallow underscores */
7889fe52 2281 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 2282 s += numlen;
2283 }
2284 else {
3280af22 2285 if (RsPARA(PL_nrs)) {
7889fe52
NIS		 2286 PL_ors_sv = newSVpvn("\n\n",2);
2287 }
2288 else {
2289 PL_ors_sv = newSVsv(PL_nrs);
c07a80fd 2290 }
79072805
LW		 2291 }
2292 return s;
1a30305b 2293 case 'M':
bbce6d69 2294 forbid_setid("-M"); /* XXX ? */
1a30305b 2295 /* FALL THROUGH */
2296 case 'm':
bbce6d69 2297 forbid_setid("-m"); /* XXX ? */
1a30305b 2298 if (*++s) {
a5f75d66 2299 char *start;
11343788 2300 SV *sv;
a5f75d66
AD		 2301 char *use = "use ";
2302 /* -M-foo == 'no foo' */
2303 if (*s == '-') { use = "no "; ++s; }
11343788 2304 sv = newSVpv(use,0);
a5f75d66 2305 start = s;
1a30305b 2306 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2307 while(isALNUM(*s) || *s==':') ++s;
2308 if (*s != '=') {
11343788 2309 sv_catpv(sv, start);
c07a80fd 2310 if (*(start-1) == 'm') {
2311 if (*s != '\0')
cea2e8a9 2312 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2313 sv_catpv( sv, " ()");
c07a80fd 2314 }
2315 } else {
6df41af2 2316 if (s == start)
be98fb35
GS		 2317 Perl_croak(aTHX_ "Module name required with -%c option",
2318 s[-1]);
11343788
MB		 2319 sv_catpvn(sv, start, s-start);
2320 sv_catpv(sv, " split(/,/,q{");
2321 sv_catpv(sv, ++s);
2322 sv_catpv(sv, "})");
c07a80fd 2323 }
1a30305b 2324 s += strlen(s);
5c831c24 2325 if (!PL_preambleav)
3280af22
NIS		 2326 PL_preambleav = newAV();
2327 av_push(PL_preambleav, sv);
1a30305b 2328 }
2329 else
cea2e8a9 2330 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2331 return s;
79072805 2332 case 'n':
3280af22 2333 PL_minus_n = TRUE;
79072805
LW		 2334 s++;
2335 return s;
2336 case 'p':
3280af22 2337 PL_minus_p = TRUE;
79072805
LW		 2338 s++;
2339 return s;
2340 case 's':
bbce6d69 2341 forbid_setid("-s");
3280af22 2342 PL_doswitches = TRUE;
79072805
LW		 2343 s++;
2344 return s;
463ee0b2 2345 case 'T':
3280af22 2346 if (!PL_tainting)
cea2e8a9 2347 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2348 s++;
2349 return s;
79072805 2350 case 'u':
bf4acbe4
GS		 2351#ifdef MACOS_TRADITIONAL
2352 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2353#endif
3280af22 2354 PL_do_undump = TRUE;
79072805
LW		 2355 s++;
2356 return s;
2357 case 'U':
3280af22 2358 PL_unsafe = TRUE;
79072805
LW		 2359 s++;
2360 return s;
2361 case 'v':
8e9464f1 2362#if !defined(DGUX)
b0e47665 2363 PerlIO_printf(PerlIO_stdout(),
d2560b70 2364 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2365 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2366#else /* DGUX */
2367/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2368 PerlIO_printf(PerlIO_stdout(),
2369 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2370 PerlIO_printf(PerlIO_stdout(),
2371 Perl_form(aTHX_ " built under %s at %s %s\n",
2372 OSNAME, __DATE__, __TIME__));
2373 PerlIO_printf(PerlIO_stdout(),
2374 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2375 OSVERS));
8e9464f1
JH		 2376#endif /* !DGUX */
2377
fb73857a 2378#if defined(LOCAL_PATCH_COUNT)
2379 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2380 PerlIO_printf(PerlIO_stdout(),
2381 "\n(with %d registered patch%s, "
2382 "see perl -V for more detail)",
2383 (int)LOCAL_PATCH_COUNT,
2384 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2385#endif
1a30305b 2386
b0e47665 2387 PerlIO_printf(PerlIO_stdout(),
bc89e66f 2388 "\n\nCopyright 1987-2001, Larry Wall\n");
eae9c151
JH		 2389#ifdef MACOS_TRADITIONAL
2390 PerlIO_printf(PerlIO_stdout(),
084592ab 2391 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
eae9c151 2392#endif
79072805 2393#ifdef MSDOS
b0e47665
GS		 2394 PerlIO_printf(PerlIO_stdout(),
2395 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2396#endif
2397#ifdef DJGPP
b0e47665
GS		 2398 PerlIO_printf(PerlIO_stdout(),
2399 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2400 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2401#endif
79072805 2402#ifdef OS2
b0e47665
GS		 2403 PerlIO_printf(PerlIO_stdout(),
2404 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2405 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2406#endif
79072805 2407#ifdef atarist
b0e47665
GS		 2408 PerlIO_printf(PerlIO_stdout(),
2409 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2410#endif
a3f9223b 2411#ifdef __BEOS__
b0e47665
GS		 2412 PerlIO_printf(PerlIO_stdout(),
2413 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2414#endif
1d84e8df 2415#ifdef MPE
b0e47665 2416 PerlIO_printf(PerlIO_stdout(),
dc22e1c4 2417 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
1d84e8df 2418#endif
9d116dd7 2419#ifdef OEMVS
b0e47665
GS		 2420 PerlIO_printf(PerlIO_stdout(),
2421 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2422#endif
495c5fdc 2423#ifdef __VOS__
b0e47665
GS		 2424 PerlIO_printf(PerlIO_stdout(),
2425 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 2426#endif
092bebab 2427#ifdef __OPEN_VM
b0e47665
GS		 2428 PerlIO_printf(PerlIO_stdout(),
2429 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2430#endif
a1a0e61e 2431#ifdef POSIX_BC
b0e47665
GS		 2432 PerlIO_printf(PerlIO_stdout(),
2433 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2434#endif
61ae2fbf 2435#ifdef __MINT__
b0e47665
GS		 2436 PerlIO_printf(PerlIO_stdout(),
2437 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2438#endif
f83d2536 2439#ifdef EPOC
b0e47665
GS		 2440 PerlIO_printf(PerlIO_stdout(),
2441 "EPOC port by Olaf Flebbe, 1999-2000\n");
f83d2536 2442#endif
e1caacb4
JH		 2443#ifdef UNDER_CE
2444 printf("WINCE port by Rainer Keuchel, 2001\n");
2445 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2446 wce_hitreturn();
2447#endif
baed7233
DL		 2448#ifdef BINARY_BUILD_NOTICE
2449 BINARY_BUILD_NOTICE;
2450#endif
b0e47665
GS		 2451 PerlIO_printf(PerlIO_stdout(),
2452 "\n\
79072805 2453Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2454GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2455Complete documentation for Perl, including FAQ lists, should be found on\n\
2456this system using `man perl' or `perldoc perl'. If you have access to the\n\
2457Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2458 PerlProc_exit(0);
79072805 2459 case 'w':
599cee73 2460 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2461 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2462 s++;
2463 return s;
2464 case 'W':
ac27b0f5 2465 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
d3a7d8c7 2466 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2467 s++;
2468 return s;
2469 case 'X':
ac27b0f5 2470 PL_dowarn = G_WARN_ALL_OFF;
d3a7d8c7 2471 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2472 s++;
2473 return s;
a0d0e21e 2474 case '*':
79072805
LW		 2475 case ' ':
2476 if (s[1] == '-') /* Additional switches on #! line. */
2477 return s+2;
2478 break;
a0d0e21e 2479 case '-':
79072805 2480 case 0:
51882d45 2481#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2482 case '\r':
2483#endif
79072805
LW		 2484 case '\n':
2485 case '\t':
2486 break;
aa689395 2487#ifdef ALTERNATE_SHEBANG
2488 case 'S': /* OS/2 needs -S on "extproc" line. */
2489 break;
2490#endif
a0d0e21e 2491 case 'P':
3280af22 2492 if (PL_preprocess)
a0d0e21e
LW		 2493 return s+1;
2494 /* FALL THROUGH */
79072805 2495 default:
cea2e8a9 2496 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2497 }
2498 return Nullch;
2499}
2500
2501/* compliments of Tom Christiansen */
2502
2503/* unexec() can be found in the Gnu emacs distribution */
ee580363 2504/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2505
2506void
864dbfa3 2507Perl_my_unexec(pTHX)
79072805
LW		 2508{
2509#ifdef UNEXEC
46fc3d4c 2510 SV* prog;
2511 SV* file;
ee580363 2512 int status = 1;
79072805
LW		 2513 extern int etext;
2514
ee580363 2515 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2516 sv_catpv(prog, "/perl");
6b88bc9c 2517 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2518 sv_catpv(file, ".perldump");
79072805 2519
ee580363
GS		 2520 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2521 /* unexec prints msg to stderr in case of failure */
6ad3d225 2522 PerlProc_exit(status);
79072805 2523#else
a5f75d66
AD		 2524# ifdef VMS
2525# include <lib$routines.h>
2526 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2527# else
79072805 2528 ABORT(); /* for use with undump */
aa689395 2529# endif
a5f75d66 2530#endif
79072805
LW		 2531}
2532
cb68f92d
GS		 2533/* initialize curinterp */
2534STATIC void
cea2e8a9 2535S_init_interp(pTHX)
cb68f92d
GS		 2536{
2537
acfe0abc
GS		 2538#ifdef MULTIPLICITY
2539# define PERLVAR(var,type)
2540# define PERLVARA(var,n,type)
2541# if defined(PERL_IMPLICIT_CONTEXT)
2542# if defined(USE_5005THREADS)
2543# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2544# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2545# else /* !USE_5005THREADS */
2546# define PERLVARI(var,type,init) aTHX->var = init;
2547# define PERLVARIC(var,type,init) aTHX->var = init;
2548# endif /* USE_5005THREADS */
3967c732 2549# else
acfe0abc
GS		 2550# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2551# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2552# endif
acfe0abc
GS		 2553# include "intrpvar.h"
2554# ifndef USE_5005THREADS
2555# include "thrdvar.h"
2556# endif
2557# undef PERLVAR
2558# undef PERLVARA
2559# undef PERLVARI
2560# undef PERLVARIC
2561#else
2562# define PERLVAR(var,type)
2563# define PERLVARA(var,n,type)
2564# define PERLVARI(var,type,init) PL_##var = init;
2565# define PERLVARIC(var,type,init) PL_##var = init;
2566# include "intrpvar.h"
2567# ifndef USE_5005THREADS
2568# include "thrdvar.h"
2569# endif
2570# undef PERLVAR
2571# undef PERLVARA
2572# undef PERLVARI
2573# undef PERLVARIC
cb68f92d
GS		 2574#endif
2575
cb68f92d
GS		 2576}
2577
76e3520e 2578STATIC void
cea2e8a9 2579S_init_main_stash(pTHX)
79072805 2580{
463ee0b2 2581 GV *gv;
6e72f9df 2582
2583 /* Note that strtab is a rather special HV. Assumptions are made
2584 about not iterating on it, and not adding tie magic to it.
2585 It is properly deallocated in perl_destruct() */
3280af22 2586 PL_strtab = newHV();
4d1ff10f 2587#ifdef USE_5005THREADS
5f08fbcd
GS		 2588 MUTEX_INIT(&PL_strtab_mutex);
2589#endif
3280af22
NIS		 2590 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2591 hv_ksplit(PL_strtab, 512);
ac27b0f5 2592
3280af22 2593 PL_curstash = PL_defstash = newHV();
79cb57f6 2594 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2595 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2596 SvREFCNT_dec(GvHV(gv));
3280af22 2597 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2598 SvREADONLY_on(gv);
3280af22
NIS		 2599 HvNAME(PL_defstash) = savepv("main");
2600 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2601 GvMULTI_on(PL_incgv);
2602 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2603 GvMULTI_on(PL_hintgv);
2604 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2605 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2606 GvMULTI_on(PL_errgv);
2607 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2608 GvMULTI_on(PL_replgv);
cea2e8a9 2609 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2610 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2611 sv_setpvn(ERRSV, "", 0);
3280af22 2612 PL_curstash = PL_defstash;
11faa288 2613 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2614 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2615 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2616 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2617 /* We must init $/ before switches are processed. */
864dbfa3 2618 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2619}
2620
76e3520e 2621STATIC void
cea2e8a9 2622S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2623{
6c4ab083 2624 *fdscript = -1;
79072805 2625
3280af22
NIS		 2626 if (PL_e_script) {
2627 PL_origfilename = savepv("-e");
96436eeb 2628 }
6c4ab083
GS		 2629 else {
2630 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2631 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2632
2633 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2634 char *s = scriptname + 8;
2635 *fdscript = atoi(s);
2636 while (isDIGIT(*s))
2637 s++;
2638 if (*s) {
2639 scriptname = savepv(s + 1);
3280af22
NIS		 2640 Safefree(PL_origfilename);
2641 PL_origfilename = scriptname;
6c4ab083
GS		 2642 }
2643 }
2644 }
2645
f4dd75d9
GS		 2646#ifdef USE_ITHREADS
2647 Safefree(CopFILE(PL_curcop));
2648#else
2649 SvREFCNT_dec(CopFILEGV(PL_curcop));
2650#endif
57843af0 2651 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2652 if (strEQ(PL_origfilename,"-"))
79072805 2653 scriptname = "";
01f988be 2654 if (*fdscript >= 0) {
3280af22 2655 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2656#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2657 if (PL_rsfp)
2658 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2659#endif
2660 }
3280af22 2661 else if (PL_preprocess) {
46fc3d4c 2662 char *cpp_cfg = CPPSTDIN;
79cb57f6 2663 SV *cpp = newSVpvn("",0);
46fc3d4c 2664 SV *cmd = NEWSV(0,0);
2665
2666 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2667 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2668 sv_catpv(cpp, cpp_cfg);
79072805 2669
0df16ed7 2670 sv_catpvn(sv, "-I", 2);
fed7345c 2671 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2672
14953ddc
MB		 2673 DEBUG_P(PerlIO_printf(Perl_debug_log,
2674 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2675 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
52853b95 2676#if defined(MSDOS) || defined(WIN32)
cea2e8a9 2677 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2678sed %s -e \"/^[^#]/b\" \
2679 -e \"/^#[ ]*include[ ]/b\" \
2680 -e \"/^#[ ]*define[ ]/b\" \
2681 -e \"/^#[ ]*if[ ]/b\" \
2682 -e \"/^#[ ]*ifdef[ ]/b\" \
2683 -e \"/^#[ ]*ifndef[ ]/b\" \
2684 -e \"/^#[ ]*else/b\" \
2685 -e \"/^#[ ]*elif[ ]/b\" \
2686 -e \"/^#[ ]*undef[ ]/b\" \
2687 -e \"/^#[ ]*endif/b\" \
2688 -e \"s/^#.*//\" \
894356b3 2689 %s | %"SVf" -C %"SVf" %s",
6b88bc9c 2690 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2691#else
092bebab 2692# ifdef __OPEN_VM
cea2e8a9 2693 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2694%s %s -e '/^[^#]/b' \
2695 -e '/^#[ ]*include[ ]/b' \
2696 -e '/^#[ ]*define[ ]/b' \
2697 -e '/^#[ ]*if[ ]/b' \
2698 -e '/^#[ ]*ifdef[ ]/b' \
2699 -e '/^#[ ]*ifndef[ ]/b' \
2700 -e '/^#[ ]*else/b' \
2701 -e '/^#[ ]*elif[ ]/b' \
2702 -e '/^#[ ]*undef[ ]/b' \
2703 -e '/^#[ ]*endif/b' \
2704 -e 's/^[ ]*#.*//' \
894356b3 2705 %s | %"SVf" %"SVf" %s",
092bebab 2706# else
cea2e8a9 2707 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2708%s %s -e '/^[^#]/b' \
2709 -e '/^#[ ]*include[ ]/b' \
2710 -e '/^#[ ]*define[ ]/b' \
2711 -e '/^#[ ]*if[ ]/b' \
2712 -e '/^#[ ]*ifdef[ ]/b' \
2713 -e '/^#[ ]*ifndef[ ]/b' \
2714 -e '/^#[ ]*else/b' \
2715 -e '/^#[ ]*elif[ ]/b' \
2716 -e '/^#[ ]*undef[ ]/b' \
2717 -e '/^#[ ]*endif/b' \
2718 -e 's/^[ ]*#.*//' \
894356b3 2719 %s | %"SVf" -C %"SVf" %s",
092bebab 2720# endif
79072805
LW		 2721#ifdef LOC_SED
2722 LOC_SED,
2723#else
2724 "sed",
2725#endif
3280af22 2726 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2727#endif
46fc3d4c 2728 scriptname, cpp, sv, CPPMINUS);
3280af22 2729 PL_doextract = FALSE;
79072805 2730#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2731 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2732#ifdef HAS_SETEUID
b28d0864 2733 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2734#else
2735#ifdef HAS_SETREUID
b28d0864 2736 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2737#else
2738#ifdef HAS_SETRESUID
b28d0864 2739 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2740#else
b28d0864 2741 PerlProc_setuid(PL_uid);
79072805
LW		 2742#endif
2743#endif
85e6fe83 2744#endif
b28d0864 2745 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2746 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2747 }
2748#endif /* IAMSUID */
3280af22 2749 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2750 SvREFCNT_dec(cmd);
2751 SvREFCNT_dec(cpp);
79072805
LW		 2752 }
2753 else if (!*scriptname) {
bbce6d69 2754 forbid_setid("program input from stdin");
3280af22 2755 PL_rsfp = PerlIO_stdin();
79072805 2756 }
96436eeb 2757 else {
3280af22 2758 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2759#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2760 if (PL_rsfp)
2761 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2762#endif
2763 }
3280af22 2764 if (!PL_rsfp) {
13281fa4 2765#ifdef DOSUID
a687059c 2766#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2767 if (PL_euid &&
cc49e20b 2768 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2769 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2770 {
46fc3d4c 2771 /* try again */
a7cb1f99 2772 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 2773 (int)PERL_REVISION, (int)PERL_VERSION,
2774 (int)PERL_SUBVERSION), PL_origargv);
cea2e8a9 2775 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2776 }
2777#endif
2778#endif
584d69ec
JH		 2779#ifdef IAMSUID
2780 errno = EPERM;
2781 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2782 Strerror(errno));
2783#else
cea2e8a9 2784 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2785 CopFILE(PL_curcop), Strerror(errno));
584d69ec 2786#endif
13281fa4 2787 }
79072805 2788}
8d063cd8 2789
7b89560d
JH		 2790/* Mention
2791 * I_SYSSTATVFS HAS_FSTATVFS
2792 * I_SYSMOUNT
c890dc6c 2793 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2794 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2795 * here so that metaconfig picks them up. */
2796
104d25b7 2797#ifdef IAMSUID
864dbfa3 2798STATIC int
e688b231 2799S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2800{
0545a864
JH		 2801 int check_okay = 0; /* able to do all the required sys/libcalls */
2802 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2803/*
ad27e871 2804 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2805 * fstatvfs() is UNIX98.
0545a864 2806 * fstatfs() is 4.3 BSD.
ad27e871 2807 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2808 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2809 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2810 */
2811
6439433f
JH		 2812#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2813
2814# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2815 defined(HAS_FSTATVFS)
2816# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2817 struct statvfs stfs;
6439433f 2818
104d25b7
JH		 2819 check_okay = fstatvfs(fd, &stfs) == 0;
2820 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2821# endif /* fstatvfs */
ac27b0f5 2822
6439433f
JH		 2823# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2824 defined(PERL_MOUNT_NOSUID) && \
2825 defined(HAS_FSTATFS) && \
2826 defined(HAS_STRUCT_STATFS) && \
2827 defined(HAS_STRUCT_STATFS_F_FLAGS)
2828# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2829 struct statfs stfs;
6439433f 2830
104d25b7 2831 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2832 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2833# endif /* fstatfs */
2834
2835# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2836 defined(PERL_MOUNT_NOSUID) && \
2837 defined(HAS_FSTAT) && \
2838 defined(HAS_USTAT) && \
2839 defined(HAS_GETMNT) && \
2840 defined(HAS_STRUCT_FS_DATA) && \
2841 defined(NOSTAT_ONE)
2842# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2843 struct stat fdst;
6439433f 2844
0545a864 2845 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2846 struct ustat us;
2847 if (ustat(fdst.st_dev, &us) == 0) {
2848 struct fs_data fsd;
2849 /* NOSTAT_ONE here because we're not examining fields which
2850 * vary between that case and STAT_ONE. */
ad27e871 2851 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2852 size_t cmplen = sizeof(us.f_fname);
2853 if (sizeof(fsd.fd_req.path) < cmplen)
2854 cmplen = sizeof(fsd.fd_req.path);
2855 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2856 fdst.st_dev == fsd.fd_req.dev) {
2857 check_okay = 1;
2858 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2859 }
2860 }
2861 }
2862 }
0545a864 2863 }
6439433f
JH		 2864# endif /* fstat+ustat+getmnt */
2865
2866# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2867 defined(HAS_GETMNTENT) && \
2868 defined(HAS_HASMNTOPT) && \
2869 defined(MNTOPT_NOSUID)
2870# define FD_ON_NOSUID_CHECK_OKAY
2871 FILE *mtab = fopen("/etc/mtab", "r");
2872 struct mntent *entry;
2873 struct stat stb, fsb;
104d25b7
JH		 2874
2875 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2876 while (entry = getmntent(mtab)) {
2877 if (stat(entry->mnt_dir, &fsb) == 0
2878 && fsb.st_dev == stb.st_dev)
2879 {
2880 /* found the filesystem */
2881 check_okay = 1;
2882 if (hasmntopt(entry, MNTOPT_NOSUID))
2883 on_nosuid = 1;
2884 break;
2885 } /* A single fs may well fail its stat(). */
2886 }
104d25b7
JH		 2887 }
2888 if (mtab)
6439433f
JH		 2889 fclose(mtab);
2890# endif /* getmntent+hasmntopt */
0545a864 2891
ac27b0f5 2892 if (!check_okay)
0545a864 2893 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2894 return on_nosuid;
2895}
2896#endif /* IAMSUID */
2897
76e3520e 2898STATIC void
cea2e8a9 2899S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2900{
155aba94 2901#ifdef IAMSUID
96436eeb 2902 int which;
155aba94 2903#endif
96436eeb 2904
13281fa4
LW		 2905 /* do we need to emulate setuid on scripts? */
2906
2907 /* This code is for those BSD systems that have setuid #! scripts disabled
2908 * in the kernel because of a security problem. Merely defining DOSUID
2909 * in perl will not fix that problem, but if you have disabled setuid
2910 * scripts in the kernel, this will attempt to emulate setuid and setgid
2911 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2912 * root version must be called suidperl or sperlN.NNN. If regular perl
2913 * discovers that it has opened a setuid script, it calls suidperl with
2914 * the same argv that it had. If suidperl finds that the script it has
2915 * just opened is NOT setuid root, it sets the effective uid back to the
2916 * uid. We don't just make perl setuid root because that loses the
2917 * effective uid we had before invoking perl, if it was different from the
2918 * uid.
13281fa4
LW		 2919 *
2920 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2921 * be defined in suidperl only. suidperl must be setuid root. The
2922 * Configure script will set this up for you if you want it.
2923 */
a687059c 2924
13281fa4 2925#ifdef DOSUID
6e72f9df 2926 char *s, *s2;
a0d0e21e 2927
b28d0864 2928 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2929 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2930 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2931 I32 len;
2d8e6c8d 2932 STRLEN n_a;
13281fa4 2933
a687059c 2934#ifdef IAMSUID
fe14fcc3 2935#ifndef HAS_SETREUID
a687059c
LW		 2936 /* On this access check to make sure the directories are readable,
2937 * there is actually a small window that the user could use to make
2938 * filename point to an accessible directory. So there is a faint
2939 * chance that someone could execute a setuid script down in a
2940 * non-accessible directory. I don't know what to do about that.
2941 * But I don't think it's too important. The manual lies when
2942 * it says access() is useful in setuid programs.
2943 */
cc49e20b 2944 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2945 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2946#else
2947 /* If we can swap euid and uid, then we can determine access rights
2948 * with a simple stat of the file, and then compare device and
2949 * inode to make sure we did stat() on the same file we opened.
2950 * Then we just have to make sure he or she can execute it.
2951 */
2952 {
2953 struct stat tmpstatbuf;
2954
85e6fe83
LW		 2955 if (
2956#ifdef HAS_SETREUID
b28d0864 2957 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2958#else
2959# if HAS_SETRESUID
b28d0864 2960 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2961# endif
85e6fe83 2962#endif
b28d0864 2963 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2964 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2965 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2966 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2967#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2968 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2969 Perl_croak(aTHX_ "Permission denied");
104d25b7 2970#endif
b28d0864
NIS		 2971 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2972 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2973 (void)PerlIO_close(PL_rsfp);
cea2e8a9 2974 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2975 }
85e6fe83
LW		 2976 if (
2977#ifdef HAS_SETREUID
b28d0864 2978 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2979#else
2980# if defined(HAS_SETRESUID)
b28d0864 2981 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2982# endif
85e6fe83 2983#endif
b28d0864 2984 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2985 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2986 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2987 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2988 }
fe14fcc3 2989#endif /* HAS_SETREUID */
a687059c
LW		 2990#endif /* IAMSUID */
2991
b28d0864 2992 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2993 Perl_croak(aTHX_ "Permission denied");
b28d0864 2994 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2995 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 2996 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 2997 CopLINE_inc(PL_curcop);
6b88bc9c 2998 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2999 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3000 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3001 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3002 if (*s == ' ') s++;
45d8adaa 3003 while (!isSPACE(*s)) s++;
2d8e6c8d 3004 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3005 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3006 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3007 Perl_croak(aTHX_ "Not a perl script");
a687059c 3008 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3009 /*
3010 * #! arg must be what we saw above. They can invoke it by
3011 * mentioning suidperl explicitly, but they may not add any strange
3012 * arguments beyond what #! says if they do invoke suidperl that way.
3013 */
3014 len = strlen(validarg);
3015 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3016 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3017 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3018
3019#ifndef IAMSUID
b28d0864
NIS		 3020 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3021 PL_euid == PL_statbuf.st_uid)
3022 if (!PL_do_undump)
cea2e8a9 3023 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3024FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3025#endif /* IAMSUID */
13281fa4 3026
b28d0864
NIS		 3027 if (PL_euid) { /* oops, we're not the setuid root perl */
3028 (void)PerlIO_close(PL_rsfp);
13281fa4 3029#ifndef IAMSUID
46fc3d4c 3030 /* try again */
a7cb1f99 3031 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3032 (int)PERL_REVISION, (int)PERL_VERSION,
3033 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3034#endif
cea2e8a9 3035 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3036 }
3037
b28d0864 3038 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3039#ifdef HAS_SETEGID
b28d0864 3040 (void)setegid(PL_statbuf.st_gid);
a687059c 3041#else
fe14fcc3 3042#ifdef HAS_SETREGID
b28d0864 3043 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3044#else
3045#ifdef HAS_SETRESGID
b28d0864 3046 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3047#else
b28d0864 3048 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3049#endif
3050#endif
85e6fe83 3051#endif
b28d0864 3052 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3053 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3054 }
b28d0864
NIS		 3055 if (PL_statbuf.st_mode & S_ISUID) {
3056 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3057#ifdef HAS_SETEUID
b28d0864 3058 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3059#else
fe14fcc3 3060#ifdef HAS_SETREUID
b28d0864 3061 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3062#else
3063#ifdef HAS_SETRESUID
b28d0864 3064 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3065#else
b28d0864 3066 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3067#endif
3068#endif
85e6fe83 3069#endif
b28d0864 3070 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3071 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3072 }
b28d0864 3073 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3074#ifdef HAS_SETEUID
b28d0864 3075 (void)seteuid((Uid_t)PL_uid);
a687059c 3076#else
fe14fcc3 3077#ifdef HAS_SETREUID
b28d0864 3078 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3079#else
85e6fe83 3080#ifdef HAS_SETRESUID
b28d0864 3081 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3082#else
b28d0864 3083 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3084#endif
a687059c
LW		 3085#endif
3086#endif
b28d0864 3087 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3088 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3089 }
748a9306 3090 init_ids();
b28d0864 3091 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3092 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3093 }
3094#ifdef IAMSUID
6b88bc9c 3095 else if (PL_preprocess)
cea2e8a9 3096 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3097 else if (fdscript >= 0)
cea2e8a9 3098 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3099 else
cea2e8a9 3100 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3101
3102 /* We absolutely must clear out any saved ids here, so we */
3103 /* exec the real perl, substituting fd script for scriptname. */
3104 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3105 PerlIO_rewind(PL_rsfp);
3106 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3107 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3108 if (!PL_origargv[which])
cea2e8a9
GS		 3109 Perl_croak(aTHX_ "Permission denied");
3110 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3111 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3112#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3113 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3114#endif
a7cb1f99 3115 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3116 (int)PERL_REVISION, (int)PERL_VERSION,
3117 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3118 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3119#endif /* IAMSUID */
a687059c 3120#else /* !DOSUID */
3280af22 3121 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3122#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3123 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3124 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3125 ||
b28d0864 3126 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3127 )
b28d0864 3128 if (!PL_do_undump)
cea2e8a9 3129 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3130FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3131#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3132 /* not set-id, must be wrapped */
a687059c 3133 }
13281fa4 3134#endif /* DOSUID */
79072805 3135}
13281fa4 3136
76e3520e 3137STATIC void
cea2e8a9 3138S_find_beginning(pTHX)
79072805 3139{
6e72f9df 3140 register char *s, *s2;
33b78306
LW		 3141
3142 /* skip forward in input to the real script? */
3143
bbce6d69 3144 forbid_setid("-x");
bf4acbe4 3145#ifdef MACOS_TRADITIONAL
084592ab 3146 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3147
bf4acbe4
GS		 3148 while (PL_doextract || gMacPerl_AlwaysExtract) {
3149 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3150 if (!gMacPerl_AlwaysExtract)
3151 Perl_croak(aTHX_ "No Perl script found in input\n");
3152
3153 if (PL_doextract) /* require explicit override ? */
3154 if (!OverrideExtract(PL_origfilename))
3155 Perl_croak(aTHX_ "User aborted script\n");
3156 else
3157 PL_doextract = FALSE;
3158
3159 /* Pater peccavi, file does not have #! */
3160 PerlIO_rewind(PL_rsfp);
ac27b0f5 3161
bf4acbe4
GS		 3162 break;
3163 }
3164#else
3280af22
NIS		 3165 while (PL_doextract) {
3166 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3167 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3168#endif
4f0c37ba
IZ		 3169 s2 = s;
3170 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3171 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3172 PL_doextract = FALSE;
6e72f9df 3173 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3174 s2 = s;
3175 while (*s == ' ' || *s == '\t') s++;
3176 if (*s++ == '-') {
3177 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3178 if (strnEQ(s2-4,"perl",4))
3179 /*SUPPRESS 530*/
155aba94
GS		 3180 while ((s = moreswitches(s)))
3181 ;
33b78306 3182 }
95e8664e
CN		 3183#ifdef MACOS_TRADITIONAL
3184 break;
3185#endif
83025b21
LW		 3186 }
3187 }
3188}
3189
afe37c7d 3190
76e3520e 3191STATIC void
cea2e8a9 3192S_init_ids(pTHX)
352d5a3a 3193{
d8eceb89
JH		 3194 PL_uid = PerlProc_getuid();
3195 PL_euid = PerlProc_geteuid();
3196 PL_gid = PerlProc_getgid();
3197 PL_egid = PerlProc_getegid();
748a9306 3198#ifdef VMS
b28d0864
NIS		 3199 PL_uid |= PL_gid << 16;
3200 PL_euid |= PL_egid << 16;
748a9306 3201#endif
3280af22 3202 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3203}
79072805 3204
76e3520e 3205STATIC void
cea2e8a9 3206S_forbid_setid(pTHX_ char *s)
bbce6d69 3207{
3280af22 3208 if (PL_euid != PL_uid)
cea2e8a9 3209 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3210 if (PL_egid != PL_gid)
cea2e8a9 3211 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3212}
3213
1ee4443e
IZ		 3214void
3215Perl_init_debugger(pTHX)
748a9306 3216{
1ee4443e
IZ		 3217 HV *ostash = PL_curstash;
3218
3280af22
NIS		 3219 PL_curstash = PL_debstash;
3220 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3221 AvREAL_off(PL_dbargs);
3222 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3223 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3224 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3225 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3226 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3227 sv_setiv(PL_DBsingle, 0);
3280af22 3228 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3229 sv_setiv(PL_DBtrace, 0);
3280af22 3230 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3231 sv_setiv(PL_DBsignal, 0);
1ee4443e 3232 PL_curstash = ostash;
352d5a3a
LW		 3233}
3234
2ce36478
SM		 3235#ifndef STRESS_REALLOC
3236#define REASONABLE(size) (size)
3237#else
3238#define REASONABLE(size) (1) /* unreasonable */
3239#endif
3240
11343788 3241void
cea2e8a9 3242Perl_init_stacks(pTHX)
79072805 3243{
e336de0d 3244 /* start with 128-item stack and 8K cxstack */
3280af22 3245 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3246 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3247 PL_curstackinfo->si_type = PERLSI_MAIN;
3248 PL_curstack = PL_curstackinfo->si_stack;
3249 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3250
3280af22
NIS		 3251 PL_stack_base = AvARRAY(PL_curstack);
3252 PL_stack_sp = PL_stack_base;
3253 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3254
3280af22
NIS		 3255 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3256 PL_tmps_floor = -1;
3257 PL_tmps_ix = -1;
3258 PL_tmps_max = REASONABLE(128);
8990e307 3259
3280af22
NIS		 3260 New(54,PL_markstack,REASONABLE(32),I32);
3261 PL_markstack_ptr = PL_markstack;
3262 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3263
ce2f7c3b 3264 SET_MARK_OFFSET;
e336de0d 3265
3280af22
NIS		 3266 New(54,PL_scopestack,REASONABLE(32),I32);
3267 PL_scopestack_ix = 0;
3268 PL_scopestack_max = REASONABLE(32);
79072805 3269
3280af22
NIS		 3270 New(54,PL_savestack,REASONABLE(128),ANY);
3271 PL_savestack_ix = 0;
3272 PL_savestack_max = REASONABLE(128);
79072805 3273
3280af22
NIS		 3274 New(54,PL_retstack,REASONABLE(16),OP*);
3275 PL_retstack_ix = 0;
3276 PL_retstack_max = REASONABLE(16);
378cc40b 3277}
33b78306 3278
2ce36478
SM		 3279#undef REASONABLE
3280
76e3520e 3281STATIC void
cea2e8a9 3282S_nuke_stacks(pTHX)
6e72f9df 3283{
3280af22
NIS		 3284 while (PL_curstackinfo->si_next)
3285 PL_curstackinfo = PL_curstackinfo->si_next;
3286 while (PL_curstackinfo) {
3287 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3288 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3289 Safefree(PL_curstackinfo->si_cxstack);
3290 Safefree(PL_curstackinfo);
3291 PL_curstackinfo = p;
e336de0d 3292 }
3280af22
NIS		 3293 Safefree(PL_tmps_stack);
3294 Safefree(PL_markstack);
3295 Safefree(PL_scopestack);
3296 Safefree(PL_savestack);
3297 Safefree(PL_retstack);
378cc40b 3298}
33b78306 3299
76e3520e 3300STATIC void
cea2e8a9 3301S_init_lexer(pTHX)
8990e307 3302{
06039172 3303 PerlIO *tmpfp;
3280af22
NIS		 3304 tmpfp = PL_rsfp;
3305 PL_rsfp = Nullfp;
3306 lex_start(PL_linestr);
3307 PL_rsfp = tmpfp;
79cb57f6 3308 PL_subname = newSVpvn("main",4);
8990e307
LW		 3309}
3310
76e3520e 3311STATIC void
cea2e8a9 3312S_init_predump_symbols(pTHX)
45d8adaa 3313{
93a17b20 3314 GV *tmpgv;
af8c498a 3315 IO *io;
79072805 3316
864dbfa3 3317 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3318 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3319 GvMULTI_on(PL_stdingv);
af8c498a 3320 io = GvIOp(PL_stdingv);
a04651f4 3321 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3322 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3323 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3324 GvMULTI_on(tmpgv);
af8c498a 3325 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3326
85e6fe83 3327 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3328 GvMULTI_on(tmpgv);
af8c498a 3329 io = GvIOp(tmpgv);
a04651f4 3330 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3331 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3332 setdefout(tmpgv);
adbc6bb1 3333 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3334 GvMULTI_on(tmpgv);
af8c498a 3335 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3336
bf49b057
GS		 3337 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3338 GvMULTI_on(PL_stderrgv);
3339 io = GvIOp(PL_stderrgv);
a04651f4 3340 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3341 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3342 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3343 GvMULTI_on(tmpgv);
af8c498a 3344 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3345
3280af22 3346 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3347
bf4acbe4
GS		 3348 if (PL_osname)
3349 Safefree(PL_osname);
3350 PL_osname = savepv(OSNAME);
79072805 3351}
33b78306 3352
76e3520e 3353STATIC void
cea2e8a9 3354S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 3355{
79072805
LW		 3356 char *s;
3357 SV *sv;
3358 GV* tmpgv;
9cbac4c7 3359#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
516a5887 3360 char **dup_env_base = 0;
103a7189 3361 int dup_env_count = 0;
9cbac4c7 3362#endif
fe14fcc3 3363
79072805 3364 argc--,argv++; /* skip name of script */
3280af22 3365 if (PL_doswitches) {
79072805
LW		 3366 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3367 if (!argv[0][1])
3368 break;
379d538a 3369 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3370 argc--,argv++;
3371 break;
3372 }
155aba94 3373 if ((s = strchr(argv[0], '='))) {
79072805 3374 *s++ = '\0';
85e6fe83 3375 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3376 }
3377 else
85e6fe83 3378 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3379 }
79072805 3380 }
3280af22
NIS		 3381 PL_toptarget = NEWSV(0,0);
3382 sv_upgrade(PL_toptarget, SVt_PVFM);
3383 sv_setpvn(PL_toptarget, "", 0);
3384 PL_bodytarget = NEWSV(0,0);
3385 sv_upgrade(PL_bodytarget, SVt_PVFM);
3386 sv_setpvn(PL_bodytarget, "", 0);
3387 PL_formtarget = PL_bodytarget;
79072805 3388
bbce6d69 3389 TAINT;
155aba94 3390 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3391#ifdef MACOS_TRADITIONAL
3392 /* $0 is not majick on a Mac */
3393 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3394#else
3280af22 3395 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3396 magicname("0", "0", 1);
bf4acbe4 3397#endif
79072805 3398 }
155aba94 3399 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
ed344e4f 3400#ifdef OS2
23da6c43 3401 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
ed344e4f 3402#else
3280af22 3403 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 3404#endif
155aba94 3405 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3280af22
NIS		 3406 GvMULTI_on(PL_argvgv);
3407 (void)gv_AVadd(PL_argvgv);
3408 av_clear(GvAVn(PL_argvgv));
79072805 3409 for (; argc > 0; argc--,argv++) {
729a02f2
GS		 3410 SV *sv = newSVpv(argv[0],0);
3411 av_push(GvAVn(PL_argvgv),sv);
3412 if (PL_widesyscalls)
e84ff256 3413 (void)sv_utf8_decode(sv);
79072805
LW		 3414 }
3415 }
155aba94 3416 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
79072805 3417 HV *hv;
3280af22
NIS		 3418 GvMULTI_on(PL_envgv);
3419 hv = GvHVn(PL_envgv);
14befaf4 3420 hv_magic(hv, Nullgv, PERL_MAGIC_env);
fa6a1c44 3421#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 3422 /* Note that if the supplied env parameter is actually a copy
3423 of the global environ then it may now point to free'd memory
3424 if the environment has been modified since. To avoid this
3425 problem we treat env==NULL as meaning 'use the default'
3426 */
3427 if (!env)
3428 env = environ;
5aabfad6 3429 if (env != environ)
79072805 3430 environ[0] = Nullch;
103a7189
JH		 3431#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3432 {
3433 char **env_base;
9041c2e3 3434 for (env_base = env; *env; env++)
103a7189
JH		 3435 dup_env_count++;
3436 if ((dup_env_base = (char **)
480bfd1e 3437 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
103a7189
JH		 3438 char **dup_env;
3439 for (env = env_base, dup_env = dup_env_base;
3440 *env;
480bfd1e
JH		 3441 env++, dup_env++) {
3442 /* With environ one needs to use safesysmalloc(). */
3443 *dup_env = safesysmalloc(strlen(*env) + 1);
3444 (void)strcpy(*dup_env, *env);
3445 }
103a7189
JH		 3446 *dup_env = Nullch;
3447 env = dup_env_base;
3448 } /* else what? */
3449 }
3450#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
764df951
IZ		 3451 if (env)
3452 for (; *env; env++) {
93a17b20 3453 if (!(s = strchr(*env,'=')))
79072805
LW		 3454 continue;
3455 *s++ = '\0';
60ce6247 3456#if defined(MSDOS)
137443ea 3457 (void)strupr(*env);
3458#endif
79072805
LW		 3459 sv = newSVpv(s--,0);
3460 (void)hv_store(hv, *env, s - *env, sv, 0);
3461 *s = '=';
764df951 3462 }
480bfd1e 3463#ifdef NEED_ENVIRON_DUP_FOR_MODIFY
103a7189
JH		 3464 if (dup_env_base) {
3465 char **dup_env;
3466 for (dup_env = dup_env_base; *dup_env; dup_env++)
480bfd1e
JH		 3467 safesysfree(*dup_env);
3468 safesysfree(dup_env_base);
103a7189 3469 }
7e0f6a1f 3470#endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
103a7189 3471#endif /* USE_ENVIRON_ARRAY */
79072805 3472 }
bbce6d69 3473 TAINT_NOT;
155aba94 3474 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 3475 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
33b78306 3476}
34de22dd 3477
76e3520e 3478STATIC void
cea2e8a9 3479S_init_perllib(pTHX)
34de22dd 3480{
85e6fe83 3481 char *s;
3280af22 3482 if (!PL_tainting) {
552a7a9b 3483#ifndef VMS
76e3520e 3484 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 3485 if (s)
9c8a64f0 3486 incpush(s, TRUE, TRUE);
85e6fe83 3487 else
9c8a64f0 3488 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
552a7a9b 3489#else /* VMS */
3490 /* Treat PERL5?LIB as a possible search list logical name -- the
3491 * "natural" VMS idiom for a Unix path string. We allow each
3492 * element to be a set of |-separated directories for compatibility.
3493 */
3494 char buf[256];
3495 int idx = 0;
3496 if (my_trnlnm("PERL5LIB",buf,0))
9c8a64f0 3497 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 3498 else
9c8a64f0 3499 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
552a7a9b 3500#endif /* VMS */
85e6fe83 3501 }
34de22dd 3502
c90c0ff4 3503/* Use the ~-expanded versions of APPLLIB (undocumented),
65f19062 3504 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
df5cef82 3505*/
4633a7c4 3506#ifdef APPLLIB_EXP
9c8a64f0 3507 incpush(APPLLIB_EXP, TRUE, TRUE);
16d20bd9 3508#endif
4633a7c4 3509
fed7345c 3510#ifdef ARCHLIB_EXP
9c8a64f0 3511 incpush(ARCHLIB_EXP, FALSE, FALSE);
a0d0e21e 3512#endif
bf4acbe4
GS		 3513#ifdef MACOS_TRADITIONAL
3514 {
3515 struct stat tmpstatbuf;
3516 SV * privdir = NEWSV(55, 0);
3517 char * macperl = PerlEnv_getenv("MACPERL");
3518
3519 if (!macperl)
3520 macperl = "";
3521
3522 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3523 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3524 incpush(SvPVX(privdir), TRUE, FALSE);
3525 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3526 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3527 incpush(SvPVX(privdir), TRUE, FALSE);
ac27b0f5 3528
bf4acbe4
GS		 3529 SvREFCNT_dec(privdir);
3530 }
3531 if (!PL_tainting)
3532 incpush(":", FALSE, FALSE);
3533#else
fed7345c 3534#ifndef PRIVLIB_EXP
65f19062 3535# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 3536#endif
ac27b0f5 3537#if defined(WIN32)
9c8a64f0 3538 incpush(PRIVLIB_EXP, TRUE, FALSE);
00dc2f4f 3539#else
9c8a64f0 3540 incpush(PRIVLIB_EXP, FALSE, FALSE);
00dc2f4f 3541#endif
4633a7c4 3542
65f19062 3543#ifdef SITEARCH_EXP
3b290362
GS		 3544 /* sitearch is always relative to sitelib on Windows for
3545 * DLL-based path intuition to work correctly */
3546# if !defined(WIN32)
9c8a64f0 3547 incpush(SITEARCH_EXP, FALSE, FALSE);
65f19062
GS		 3548# endif
3549#endif
3550
4633a7c4 3551#ifdef SITELIB_EXP
65f19062 3552# if defined(WIN32)
9c8a64f0 3553 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
65f19062 3554# else
9c8a64f0 3555 incpush(SITELIB_EXP, FALSE, FALSE);
65f19062
GS		 3556# endif
3557#endif
189d1e8d 3558
65f19062 3559#ifdef SITELIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3560 incpush(SITELIB_STEM, FALSE, TRUE);
81c6dfba 3561#endif
65f19062
GS		 3562
3563#ifdef PERL_VENDORARCH_EXP
4ea817c6 3564 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 3565 * DLL-based path intuition to work correctly */
3566# if !defined(WIN32)
9c8a64f0 3567 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
65f19062 3568# endif
4b03c463 3569#endif
65f19062
GS		 3570
3571#ifdef PERL_VENDORLIB_EXP
3572# if defined(WIN32)
9c8a64f0 3573 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
65f19062 3574# else
9c8a64f0 3575 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
65f19062 3576# endif
a3635516 3577#endif
65f19062
GS		 3578
3579#ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
9c8a64f0 3580 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
00dc2f4f 3581#endif
65f19062 3582
3b777bb4
GS		 3583#ifdef PERL_OTHERLIBDIRS
3584 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3585#endif
3586
3280af22 3587 if (!PL_tainting)
9c8a64f0 3588 incpush(".", FALSE, FALSE);
bf4acbe4 3589#endif /* MACOS_TRADITIONAL */
774d564b 3590}
3591
ed79a026 3592#if defined(DOSISH) || defined(EPOC)
774d564b 3593# define PERLLIB_SEP ';'
3594#else
3595# if defined(VMS)
3596# define PERLLIB_SEP '|'
3597# else
bf4acbe4
GS		 3598# if defined(MACOS_TRADITIONAL)
3599# define PERLLIB_SEP ','
3600# else
3601# define PERLLIB_SEP ':'
3602# endif
774d564b 3603# endif
3604#endif
3605#ifndef PERLLIB_MANGLE
3606# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 3607#endif
774d564b 3608
76e3520e 3609STATIC void
9c8a64f0 3610S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
774d564b 3611{
3612 SV *subdir = Nullsv;
774d564b 3613
3b290362 3614 if (!p || !*p)
774d564b 3615 return;
3616
9c8a64f0 3617 if (addsubdirs || addoldvers) {
00db4c45 3618 subdir = sv_newmortal();
774d564b 3619 }
3620
3621 /* Break at all separators */
3622 while (p && *p) {
8c52afec 3623 SV *libdir = NEWSV(55,0);
774d564b 3624 char *s;
3625
3626 /* skip any consecutive separators */
3627 while ( *p == PERLLIB_SEP ) {
3628 /* Uncomment the next line for PATH semantics */
79cb57f6 3629 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 3630 p++;
3631 }
3632
3633 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3634 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3635 (STRLEN)(s - p));
3636 p = s + 1;
3637 }
3638 else {
3639 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3640 p = Nullch; /* break out */
3641 }
bf4acbe4
GS		 3642#ifdef MACOS_TRADITIONAL
3643 if (!strchr(SvPVX(libdir), ':'))
3644 sv_insert(libdir, 0, 0, ":", 1);
3645 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3646 sv_catpv(libdir, ":");
3647#endif
774d564b 3648
3649 /*
3650 * BEFORE pushing libdir onto @INC we may first push version- and
3651 * archname-specific sub-directories.
3652 */
9c8a64f0 3653 if (addsubdirs || addoldvers) {
29d82f8d 3654#ifdef PERL_INC_VERSION_LIST
8353b874
GS		 3655 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3656 const char *incverlist[] = { PERL_INC_VERSION_LIST };
29d82f8d
GS		 3657 const char **incver;
3658#endif
774d564b 3659 struct stat tmpstatbuf;
aa689395 3660#ifdef VMS
3661 char *unix;
3662 STRLEN len;
774d564b 3663
2d8e6c8d 3664 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3665 len = strlen(unix);
3666 while (unix[len-1] == '/') len--; /* Cosmetic */
3667 sv_usepvn(libdir,unix,len);
3668 }
3669 else
bf49b057 3670 PerlIO_printf(Perl_error_log,
aa689395 3671 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3672 SvPV(libdir,len));
aa689395 3673#endif
9c8a64f0 3674 if (addsubdirs) {
bf4acbe4
GS		 3675#ifdef MACOS_TRADITIONAL
3676#define PERL_AV_SUFFIX_FMT ""
084592ab
CN		 3677#define PERL_ARCH_FMT "%s:"
3678#define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
bf4acbe4
GS		 3679#else
3680#define PERL_AV_SUFFIX_FMT "/"
3681#define PERL_ARCH_FMT "/%s"
084592ab 3682#define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
bf4acbe4 3683#endif
9c8a64f0 3684 /* .../version/archname if -d .../version/archname */
084592ab 3685 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
9c8a64f0
GS		 3686 libdir,
3687 (int)PERL_REVISION, (int)PERL_VERSION,
3688 (int)PERL_SUBVERSION, ARCHNAME);
3689 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3690 S_ISDIR(tmpstatbuf.st_mode))
3691 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4b03c463 3692
9c8a64f0 3693 /* .../version if -d .../version */
084592ab 3694 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
9c8a64f0
GS		 3695 (int)PERL_REVISION, (int)PERL_VERSION,
3696 (int)PERL_SUBVERSION);
3697 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3698 S_ISDIR(tmpstatbuf.st_mode))
3699 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3700
3701 /* .../archname if -d .../archname */
bf4acbe4 3702 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
29d82f8d
GS		 3703 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3704 S_ISDIR(tmpstatbuf.st_mode))
3705 av_push(GvAVn(PL_incgv), newSVsv(subdir));
29d82f8d 3706 }
9c8a64f0 3707
9c8a64f0 3708#ifdef PERL_INC_VERSION_LIST
ccc2aad8 3709 if (addoldvers) {
9c8a64f0
GS		 3710 for (incver = incverlist; *incver; incver++) {
3711 /* .../xxx if -d .../xxx */
bf4acbe4 3712 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
9c8a64f0
GS		 3713 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3714 S_ISDIR(tmpstatbuf.st_mode))
3715 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3716 }
3717 }
29d82f8d 3718#endif
774d564b 3719 }
3720
3721 /* finally push this lib directory on the end of @INC */
3280af22 3722 av_push(GvAVn(PL_incgv), libdir);
774d564b 3723 }
34de22dd 3724}
93a17b20 3725
4d1ff10f 3726#ifdef USE_5005THREADS
76e3520e 3727STATIC struct perl_thread *
cea2e8a9 3728S_init_main_thread(pTHX)
199100c8 3729{
c5be433b 3730#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3731 struct perl_thread *thr;
cea2e8a9 3732#endif
199100c8
MB		 3733 XPV *xpv;
3734
52e1cb5e 3735 Newz(53, thr, 1, struct perl_thread);
533c011a 3736 PL_curcop = &PL_compiling;
c5be433b 3737 thr->interp = PERL_GET_INTERP;
199100c8 3738 thr->cvcache = newHV();
54b9620d 3739 thr->threadsv = newAV();
940cb80d 3740 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3741 thr->specific = newAV();
3742 thr->flags = THRf_R_JOINABLE;
3743 MUTEX_INIT(&thr->mutex);
3744 /* Handcraft thrsv similarly to mess_sv */
533c011a 3745 New(53, PL_thrsv, 1, SV);
199100c8 3746 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3747 SvFLAGS(PL_thrsv) = SVt_PV;
3748 SvANY(PL_thrsv) = (void*)xpv;
3749 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3750 SvPVX(PL_thrsv) = (char*)thr;
3751 SvCUR_set(PL_thrsv, sizeof(thr));
3752 SvLEN_set(PL_thrsv, sizeof(thr));
3753 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3754 thr->oursv = PL_thrsv;
3755 PL_chopset = " \n-";
3967c732 3756 PL_dumpindent = 4;
533c011a
NIS		 3757
3758 MUTEX_LOCK(&PL_threads_mutex);
3759 PL_nthreads++;
199100c8
MB		 3760 thr->tid = 0;
3761 thr->next = thr;
3762 thr->prev = thr;
8dcd6f7b 3763 thr->thr_done = 0;
533c011a 3764 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3765
4b026b9e 3766#ifdef HAVE_THREAD_INTERN
4f63d024 3767 Perl_init_thread_intern(thr);
235db74f
GS		 3768#endif
3769
3770#ifdef SET_THREAD_SELF
3771 SET_THREAD_SELF(thr);
199100c8
MB		 3772#else
3773 thr->self = pthread_self();
235db74f 3774#endif /* SET_THREAD_SELF */
06d86050 3775 PERL_SET_THX(thr);
199100c8
MB		 3776
3777 /*
411caa50
JH		 3778 * These must come after the thread self setting
3779 * because sv_setpvn does SvTAINT and the taint
3780 * fields thread selfness being set.
199100c8 3781 */
533c011a
NIS		 3782 PL_toptarget = NEWSV(0,0);
3783 sv_upgrade(PL_toptarget, SVt_PVFM);
3784 sv_setpvn(PL_toptarget, "", 0);
3785 PL_bodytarget = NEWSV(0,0);
3786 sv_upgrade(PL_bodytarget, SVt_PVFM);
3787 sv_setpvn(PL_bodytarget, "", 0);
3788 PL_formtarget = PL_bodytarget;
79cb57f6 3789 thr->errsv = newSVpvn("", 0);
78857c3c 3790 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3791
533c011a 3792 PL_maxscream = -1;
a2efc822 3793 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
0b94c7bb
GS		 3794 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3795 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3796 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3797 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3798 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3799 PL_regindent = 0;
3800 PL_reginterp_cnt = 0;
5c0ca799 3801
199100c8
MB		 3802 return thr;
3803}
4d1ff10f 3804#endif /* USE_5005THREADS */
199100c8 3805
93a17b20 3806void
864dbfa3 3807Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3808{
971a9dd3 3809 SV *atsv;
57843af0 3810 line_t oldline = CopLINE(PL_curcop);
312caa8e 3811 CV *cv;
22921e25 3812 STRLEN len;
6224f72b 3813 int ret;
db36c5a1 3814 dJMPENV;
93a17b20 3815
76e3520e 3816 while (AvFILL(paramList) >= 0) {
312caa8e 3817 cv = (CV*)av_shift(paramList);
aefff11f 3818 if (PL_savebegin && (paramList == PL_beginav)) {
059a8bb7
JH		 3819 /* save PL_beginav for compiler */
3820 if (! PL_beginav_save)
3821 PL_beginav_save = newAV();
3822 av_push(PL_beginav_save, (SV*)cv);
3823 } else {
3824 SAVEFREESV(cv);
3825 }
14dd3ad8
GS		 3826#ifdef PERL_FLEXIBLE_EXCEPTIONS
3827 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3828#else
3829 JMPENV_PUSH(ret);
3830#endif
6224f72b 3831 switch (ret) {
312caa8e 3832 case 0:
14dd3ad8
GS		 3833#ifndef PERL_FLEXIBLE_EXCEPTIONS
3834 call_list_body(cv);
3835#endif
971a9dd3 3836 atsv = ERRSV;
312caa8e
CS		 3837 (void)SvPV(atsv, len);
3838 if (len) {
971a9dd3 3839 STRLEN n_a;
312caa8e 3840 PL_curcop = &PL_compiling;
57843af0 3841 CopLINE_set(PL_curcop, oldline);
312caa8e
CS		 3842 if (paramList == PL_beginav)
3843 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3844 else
4f25aa18
GS		 3845 Perl_sv_catpvf(aTHX_ atsv,
3846 "%s failed--call queue aborted",
7d30b5c4 3847 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3848 : paramList == PL_initav ? "INIT"
3849 : "END");
312caa8e
CS		 3850 while (PL_scopestack_ix > oldscope)
3851 LEAVE;
14dd3ad8 3852 JMPENV_POP;
971a9dd3 3853 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
a0d0e21e 3854 }
85e6fe83 3855 break;
6224f72b 3856 case 1:
f86702cc 3857 STATUS_ALL_FAILURE;
85e6fe83 3858 /* FALL THROUGH */
6224f72b 3859 case 2:
85e6fe83 3860 /* my_exit() was called */
3280af22 3861 while (PL_scopestack_ix > oldscope)
2ae324a7 3862 LEAVE;
84902520 3863 FREETMPS;
3280af22 3864 PL_curstash = PL_defstash;
3280af22 3865 PL_curcop = &PL_compiling;
57843af0 3866 CopLINE_set(PL_curcop, oldline);
14dd3ad8 3867 JMPENV_POP;
cc3604b1 3868 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3280af22 3869 if (paramList == PL_beginav)
cea2e8a9 3870 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3871 else
4f25aa18 3872 Perl_croak(aTHX_ "%s failed--call queue aborted",
7d30b5c4 3873 paramList == PL_checkav ? "CHECK"
4f25aa18
GS		 3874 : paramList == PL_initav ? "INIT"
3875 : "END");
85e6fe83 3876 }
f86702cc 3877 my_exit_jump();
85e6fe83 3878 /* NOTREACHED */
6224f72b 3879 case 3:
312caa8e
CS		 3880 if (PL_restartop) {
3881 PL_curcop = &PL_compiling;
57843af0 3882 CopLINE_set(PL_curcop, oldline);
312caa8e 3883 JMPENV_JUMP(3);
85e6fe83 3884 }
bf49b057 3885 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3886 FREETMPS;
3887 break;
8990e307 3888 }
14dd3ad8 3889 JMPENV_POP;
93a17b20 3890 }
93a17b20 3891}
93a17b20 3892
14dd3ad8 3893#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3894STATIC void *
14dd3ad8 3895S_vcall_list_body(pTHX_ va_list args)
312caa8e 3896{
312caa8e 3897 CV *cv = va_arg(args, CV*);
14dd3ad8
GS		 3898 return call_list_body(cv);
3899}
3900#endif
312caa8e 3901
14dd3ad8
GS		 3902STATIC void *
3903S_call_list_body(pTHX_ CV *cv)
3904{
312caa8e 3905 PUSHMARK(PL_stack_sp);
864dbfa3 3906 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3907 return NULL;
3908}
3909
f86702cc 3910void
864dbfa3 3911Perl_my_exit(pTHX_ U32 status)
f86702cc 3912{
8b73bbec 3913 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3914 thr, (unsigned long) status));
f86702cc 3915 switch (status) {
3916 case 0:
3917 STATUS_ALL_SUCCESS;
3918 break;
3919 case 1:
3920 STATUS_ALL_FAILURE;
3921 break;
3922 default:
3923 STATUS_NATIVE_SET(status);
3924 break;
3925 }
3926 my_exit_jump();
3927}
3928
3929void
864dbfa3 3930Perl_my_failure_exit(pTHX)
f86702cc 3931{
3932#ifdef VMS
3933 if (vaxc$errno & 1) {
4fdae800 3934 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3935 STATUS_NATIVE_SET(44);
f86702cc 3936 }
3937 else {
ff0cee69 3938 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3939 STATUS_NATIVE_SET(44);
f86702cc 3940 else
4fdae800 3941 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3942 }
3943#else
9b599b2a 3944 int exitstatus;
f86702cc 3945 if (errno & 255)
3946 STATUS_POSIX_SET(errno);
9b599b2a 3947 else {
ac27b0f5 3948 exitstatus = STATUS_POSIX >> 8;
9b599b2a
GS		 3949 if (exitstatus & 255)
3950 STATUS_POSIX_SET(exitstatus);
3951 else
3952 STATUS_POSIX_SET(255);
3953 }
f86702cc 3954#endif
3955 my_exit_jump();
93a17b20
LW		 3956}
3957
76e3520e 3958STATIC void
cea2e8a9 3959S_my_exit_jump(pTHX)
f86702cc 3960{
c09156bb 3961 register PERL_CONTEXT *cx;
f86702cc 3962 I32 gimme;
3963 SV **newsp;
3964
3280af22
NIS		 3965 if (PL_e_script) {
3966 SvREFCNT_dec(PL_e_script);
3967 PL_e_script = Nullsv;
f86702cc 3968 }
3969
3280af22 3970 POPSTACK_TO(PL_mainstack);
f86702cc 3971 if (cxstack_ix >= 0) {
3972 if (cxstack_ix > 0)
3973 dounwind(0);
3280af22 3974 POPBLOCK(cx,PL_curpm);
f86702cc 3975 LEAVE;
3976 }
ff0cee69 3977
6224f72b 3978 JMPENV_JUMP(2);
f86702cc 3979}
873ef191 3980
0cb96387 3981static I32
acfe0abc 3982read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3983{
3984 char *p, *nl;
3280af22 3985 p = SvPVX(PL_e_script);
873ef191 3986 nl = strchr(p, '\n');
3280af22 3987 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3988 if (nl-p == 0) {
0cb96387 3989 filter_del(read_e_script);
873ef191 3990 return 0;
7dfe3f66 3991 }
873ef191 3992 sv_catpvn(buf_sv, p, nl-p);
3280af22 3993 sv_chop(PL_e_script, nl);
873ef191
GS		 3994 return 1;
3995}
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