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more cleanups for change#4539
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
4eb8286e 3 * Copyright (c) 1987-1999 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
54310121 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
0cb96387
GS		 28static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
29
51fa4eea
JH		 30#ifdef I_FCNTL
31#include <fcntl.h>
32#endif
33#ifdef I_SYS_FILE
34#include <sys/file.h>
35#endif
36
a687059c
LW		 37#ifdef IAMSUID
38#ifndef DOSUID
39#define DOSUID
40#endif
41#endif
378cc40b 42
a687059c
LW		 43#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
44#ifdef DOSUID
45#undef DOSUID
46#endif
47#endif
8d063cd8 48
873ef191 49#ifdef PERL_OBJECT
32e30700
GS		 50CPerlObj*
51perl_alloc(struct IPerlMem* ipM, struct IPerlEnv* ipE,
52 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
53 struct IPerlDir* ipD, struct IPerlSock* ipS,
54 struct IPerlProc* ipP)
01f988be
GS		 55{
56 CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP);
32e30700 57 if (pPerl != NULL)
01f988be 58 pPerl->Init();
79072805 59
01f988be
GS		 60 return pPerl;
61}
62#else
32e30700
GS		 63
64#ifdef PERL_IMPLICIT_SYS
65PerlInterpreter *
66perl_alloc_using(struct IPerlMem* ipM, struct IPerlEnv* ipE,
67 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
68 struct IPerlDir* ipD, struct IPerlSock* ipS,
69 struct IPerlProc* ipP)
70{
71 PerlInterpreter *my_perl;
72
73 /* New() needs interpreter, so call malloc() instead */
74 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
75 PERL_SET_INTERP(my_perl);
76 Zero(my_perl, 1, PerlInterpreter);
77 PL_Mem = ipM;
78 PL_Env = ipE;
79 PL_StdIO = ipStd;
80 PL_LIO = ipLIO;
81 PL_Dir = ipD;
82 PL_Sock = ipS;
83 PL_Proc = ipP;
84 return my_perl;
85}
86#else
93a17b20 87PerlInterpreter *
cea2e8a9 88perl_alloc(void)
79072805 89{
cea2e8a9 90 PerlInterpreter *my_perl;
79072805 91
54aff467 92 /* New() needs interpreter, so call malloc() instead */
e8ee3774 93 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
c5be433b 94 PERL_SET_INTERP(my_perl);
cea2e8a9 95 return my_perl;
79072805 96}
32e30700 97#endif /* PERL_IMPLICIT_SYS */
01f988be 98#endif /* PERL_OBJECT */
79072805
LW		 99
100void
0cb96387 101perl_construct(pTHXx)
79072805 102{
a863c7d1
MB		 103#ifdef USE_THREADS
104 int i;
105#ifndef FAKE_THREADS
e1f15930 106 struct perl_thread *thr = NULL;
a863c7d1
MB		 107#endif /* FAKE_THREADS */
108#endif /* USE_THREADS */
11343788 109
8990e307 110#ifdef MULTIPLICITY
54aff467
GS		 111 init_interp();
112 PL_perl_destruct_level = 1;
113#else
114 if (PL_perl_destruct_level > 0)
115 init_interp();
116#endif
117
33f46ff6 118 /* Init the real globals (and main thread)? */
3280af22 119 if (!PL_linestr) {
11343788 120#ifdef USE_THREADS
8023c3ce 121
33f46ff6 122 INIT_THREADS;
d55594ae
GS		 123#ifdef ALLOC_THREAD_KEY
124 ALLOC_THREAD_KEY;
125#else
533c011a 126 if (pthread_key_create(&PL_thr_key, 0))
cea2e8a9 127 Perl_croak(aTHX_ "panic: pthread_key_create");
d55594ae 128#endif
533c011a 129 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 130 /*
131 * Safe to use basic SV functions from now on (though
132 * not things like mortals or tainting yet).
133 */
533c011a
NIS		 134 MUTEX_INIT(&PL_eval_mutex);
135 COND_INIT(&PL_eval_cond);
136 MUTEX_INIT(&PL_threads_mutex);
137 COND_INIT(&PL_nthreads_cond);
dce16143 138#ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 139 MUTEX_INIT(&PL_svref_mutex);
dce16143 140#endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 141
5ff3f7a4
GS		 142 MUTEX_INIT(&PL_cred_mutex);
143
199100c8 144 thr = init_main_thread();
11343788
MB		 145#endif /* USE_THREADS */
146
0b94c7bb 147 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
312caa8e 148
2aea9f8a
GS		 149 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
150
3280af22
NIS		 151 PL_linestr = NEWSV(65,79);
152 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 153
3280af22 154 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 155 /* set read-only and try to insure than we wont see REFCNT==0
156 very often */
157
3280af22
NIS		 158 SvREADONLY_on(&PL_sv_undef);
159 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 160
3280af22
NIS		 161 sv_setpv(&PL_sv_no,PL_No);
162 SvNV(&PL_sv_no);
163 SvREADONLY_on(&PL_sv_no);
164 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 165
3280af22
NIS		 166 sv_setpv(&PL_sv_yes,PL_Yes);
167 SvNV(&PL_sv_yes);
168 SvREADONLY_on(&PL_sv_yes);
169 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 170 }
79072805 171
76e3520e
GS		 172#ifdef PERL_OBJECT
173 /* TODO: */
6b88bc9c 174 /* PL_sighandlerp = sighandler; */
76e3520e 175#else
cea2e8a9 176 PL_sighandlerp = Perl_sighandler;
76e3520e 177#endif
3280af22 178 PL_pidstatus = newHV();
44a8e56a 179
79072805
LW		 180#ifdef MSDOS
181 /*
182 * There is no way we can refer to them from Perl so close them to save
183 * space. The other alternative would be to provide STDAUX and STDPRN
184 * filehandles.
185 */
186 (void)fclose(stdaux);
187 (void)fclose(stdprn);
188#endif
189 }
190
79cb57f6 191 PL_nrs = newSVpvn("\n", 1);
3280af22 192 PL_rs = SvREFCNT_inc(PL_nrs);
dc92893f 193
cea2e8a9 194 init_stacks();
79072805 195
748a9306 196 init_ids();
3280af22 197 PL_lex_state = LEX_NOTPARSING;
a5f75d66 198
312caa8e 199 JMPENV_BOOTSTRAP;
f86702cc 200 STATUS_ALL_SUCCESS;
201
0672f40e 202 init_i18nl10n(1);
36477c24 203 SET_NUMERIC_STANDARD();
0b5b802d 204
cceca5ed
GS		 205#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
206 sprintf(PL_patchlevel, "%7.5f", (double) PERL_REVISION
207 + ((double) PERL_VERSION / (double) 1000)
208 + ((double) PERL_SUBVERSION / (double) 100000));
a5f75d66 209#else
cceca5ed
GS		 210 sprintf(PL_patchlevel, "%5.3f", (double) PERL_REVISION +
211 ((double) PERL_VERSION / (double) 1000));
a5f75d66 212#endif
79072805 213
ab821d7f 214#if defined(LOCAL_PATCH_COUNT)
3280af22 215 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 216#endif
217
4b556e6c 218 PerlIO_init(); /* Hook to IO system */
760ac839 219
3280af22
NIS		 220 PL_fdpid = newAV(); /* for remembering popen pids by fd */
221 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
8990e307 222
8990e307 223 ENTER;
79072805
LW		 224}
225
226void
0cb96387 227perl_destruct(pTHXx)
79072805 228{
11343788 229 dTHR;
748a9306 230 int destruct_level; /* 0=none, 1=full, 2=full with checks */
8990e307 231 I32 last_sv_count;
a0d0e21e 232 HV *hv;
1f2bfc8a 233#ifdef USE_THREADS
33f46ff6 234 Thread t;
cea2e8a9 235 dTHX;
1f2bfc8a 236#endif /* USE_THREADS */
8990e307 237
11343788 238#ifdef USE_THREADS
0f15f207 239#ifndef FAKE_THREADS
8023c3ce
MB		 240 /* Pass 1 on any remaining threads: detach joinables, join zombies */
241 retry_cleanup:
533c011a 242 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 243 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 244 "perl_destruct: waiting for %d threads...\n",
533c011a 245 PL_nthreads - 1));
33f46ff6 246 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 247 MUTEX_LOCK(&t->mutex);
248 switch (ThrSTATE(t)) {
249 AV *av;
c7848ba1 250 case THRf_ZOMBIE:
bf49b057 251 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 252 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 253 ThrSETSTATE(t, THRf_DEAD);
254 MUTEX_UNLOCK(&t->mutex);
533c011a 255 PL_nthreads--;
8023c3ce
MB		 256 /*
257 * The SvREFCNT_dec below may take a long time (e.g. av
258 * may contain an object scalar whose destructor gets
259 * called) so we have to unlock threads_mutex and start
260 * all over again.
261 */
533c011a 262 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 263 JOIN(t, &av);
605e5515 264 SvREFCNT_dec((SV*)av);
bf49b057 265 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 266 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 267 goto retry_cleanup;
c7848ba1 268 case THRf_R_JOINABLE:
bf49b057 269 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 270 "perl_destruct: detaching thread %p\n", t));
271 ThrSETSTATE(t, THRf_R_DETACHED);
272 /*
273 * We unlock threads_mutex and t->mutex in the opposite order
274 * from which we locked them just so that DETACH won't
275 * deadlock if it panics. It's only a breach of good style
276 * not a bug since they are unlocks not locks.
277 */
533c011a 278 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 279 DETACH(t);
280 MUTEX_UNLOCK(&t->mutex);
8023c3ce 281 goto retry_cleanup;
c7848ba1 282 default:
bf49b057 283 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 284 "perl_destruct: ignoring %p (state %u)\n",
285 t, ThrSTATE(t)));
286 MUTEX_UNLOCK(&t->mutex);
c7848ba1 287 /* fall through and out */
33f46ff6
MB		 288 }
289 }
8023c3ce
MB		 290 /* We leave the above "Pass 1" loop with threads_mutex still locked */
291
292 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 293 while (PL_nthreads > 1)
11343788 294 {
bf49b057 295 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 296 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 297 PL_nthreads - 1));
298 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 299 }
300 /* At this point, we're the last thread */
533c011a 301 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 302 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 303 MUTEX_DESTROY(&PL_threads_mutex);
304 COND_DESTROY(&PL_nthreads_cond);
0f15f207 305#endif /* !defined(FAKE_THREADS) */
11343788
MB		 306#endif /* USE_THREADS */
307
3280af22 308 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 309#ifdef DEBUGGING
310 {
311 char *s;
76e3520e 312 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
5f05dabc 313 int i = atoi(s);
314 if (destruct_level < i)
315 destruct_level = i;
316 }
4633a7c4
LW		 317 }
318#endif
319
8990e307 320 LEAVE;
a0d0e21e
LW		 321 FREETMPS;
322
ff0cee69 323 /* We must account for everything. */
324
325 /* Destroy the main CV and syntax tree */
3280af22
NIS		 326 if (PL_main_root) {
327 PL_curpad = AvARRAY(PL_comppad);
328 op_free(PL_main_root);
329 PL_main_root = Nullop;
a0d0e21e 330 }
3280af22
NIS		 331 PL_curcop = &PL_compiling;
332 PL_main_start = Nullop;
333 SvREFCNT_dec(PL_main_cv);
334 PL_main_cv = Nullcv;
24d3c518 335 PL_dirty = TRUE;
ff0cee69 336
3280af22 337 if (PL_sv_objcount) {
a0d0e21e
LW		 338 /*
339 * Try to destruct global references. We do this first so that the
340 * destructors and destructees still exist. Some sv's might remain.
341 * Non-referenced objects are on their own.
342 */
a0d0e21e 343 sv_clean_objs();
8990e307
LW		 344 }
345
5cd24f17 346 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 347 SvREFCNT_dec(PL_warnhook);
348 PL_warnhook = Nullsv;
349 SvREFCNT_dec(PL_diehook);
350 PL_diehook = Nullsv;
5cd24f17 351
4b556e6c 352 /* call exit list functions */
3280af22 353 while (PL_exitlistlen-- > 0)
0cb96387 354 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 355
3280af22 356 Safefree(PL_exitlist);
4b556e6c 357
a0d0e21e 358 if (destruct_level == 0){
8990e307 359
a0d0e21e
LW		 360 DEBUG_P(debprofdump());
361
362 /* The exit() function will do everything that needs doing. */
363 return;
364 }
5dd60ef7 365
5f05dabc 366 /* loosen bonds of global variables */
367
3280af22
NIS		 368 if(PL_rsfp) {
369 (void)PerlIO_close(PL_rsfp);
370 PL_rsfp = Nullfp;
8ebc5c01 371 }
372
373 /* Filters for program text */
3280af22
NIS		 374 SvREFCNT_dec(PL_rsfp_filters);
375 PL_rsfp_filters = Nullav;
8ebc5c01 376
377 /* switches */
3280af22
NIS		 378 PL_preprocess = FALSE;
379 PL_minus_n = FALSE;
380 PL_minus_p = FALSE;
381 PL_minus_l = FALSE;
382 PL_minus_a = FALSE;
383 PL_minus_F = FALSE;
384 PL_doswitches = FALSE;
599cee73 385 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 386 PL_doextract = FALSE;
387 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 388 PL_unsafe = FALSE;
389
390 Safefree(PL_inplace);
391 PL_inplace = Nullch;
392
393 if (PL_e_script) {
394 SvREFCNT_dec(PL_e_script);
395 PL_e_script = Nullsv;
8ebc5c01 396 }
397
398 /* magical thingies */
399
3280af22
NIS		 400 Safefree(PL_ofs); /* $, */
401 PL_ofs = Nullch;
5f05dabc 402
3280af22
NIS		 403 Safefree(PL_ors); /* $\ */
404 PL_ors = Nullch;
8ebc5c01 405
3280af22
NIS		 406 SvREFCNT_dec(PL_rs); /* $/ */
407 PL_rs = Nullsv;
dc92893f 408
3280af22
NIS		 409 SvREFCNT_dec(PL_nrs); /* $/ helper */
410 PL_nrs = Nullsv;
5f05dabc 411
3280af22 412 PL_multiline = 0; /* $* */
5f05dabc 413
3280af22
NIS		 414 SvREFCNT_dec(PL_statname);
415 PL_statname = Nullsv;
416 PL_statgv = Nullgv;
5f05dabc 417
8ebc5c01 418 /* defgv, aka *_ should be taken care of elsewhere */
419
8ebc5c01 420 /* clean up after study() */
3280af22
NIS		 421 SvREFCNT_dec(PL_lastscream);
422 PL_lastscream = Nullsv;
423 Safefree(PL_screamfirst);
424 PL_screamfirst = 0;
425 Safefree(PL_screamnext);
426 PL_screamnext = 0;
8ebc5c01 427
7d5ea4e7
GS		 428 /* float buffer */
429 Safefree(PL_efloatbuf);
430 PL_efloatbuf = Nullch;
431 PL_efloatsize = 0;
432
8ebc5c01 433 /* startup and shutdown function lists */
3280af22
NIS		 434 SvREFCNT_dec(PL_beginav);
435 SvREFCNT_dec(PL_endav);
4f25aa18 436 SvREFCNT_dec(PL_stopav);
3280af22
NIS		 437 SvREFCNT_dec(PL_initav);
438 PL_beginav = Nullav;
439 PL_endav = Nullav;
4f25aa18 440 PL_stopav = Nullav;
3280af22 441 PL_initav = Nullav;
5618dfe8 442
8ebc5c01 443 /* shortcuts just get cleared */
3280af22 444 PL_envgv = Nullgv;
3280af22
NIS		 445 PL_incgv = Nullgv;
446 PL_hintgv = Nullgv;
447 PL_errgv = Nullgv;
448 PL_argvgv = Nullgv;
449 PL_argvoutgv = Nullgv;
450 PL_stdingv = Nullgv;
bf49b057 451 PL_stderrgv = Nullgv;
3280af22
NIS		 452 PL_last_in_gv = Nullgv;
453 PL_replgv = Nullgv;
5c831c24 454 PL_debstash = Nullhv;
8ebc5c01 455
456 /* reset so print() ends up where we expect */
457 setdefout(Nullgv);
5c831c24 458
7a1c5554
GS		 459 SvREFCNT_dec(PL_argvout_stack);
460 PL_argvout_stack = Nullav;
8ebc5c01 461
5c831c24
GS		 462 SvREFCNT_dec(PL_fdpid);
463 PL_fdpid = Nullav;
464 SvREFCNT_dec(PL_modglobal);
465 PL_modglobal = Nullhv;
466 SvREFCNT_dec(PL_preambleav);
467 PL_preambleav = Nullav;
468 SvREFCNT_dec(PL_subname);
469 PL_subname = Nullsv;
470 SvREFCNT_dec(PL_linestr);
471 PL_linestr = Nullsv;
472 SvREFCNT_dec(PL_pidstatus);
473 PL_pidstatus = Nullhv;
474 SvREFCNT_dec(PL_toptarget);
475 PL_toptarget = Nullsv;
476 SvREFCNT_dec(PL_bodytarget);
477 PL_bodytarget = Nullsv;
478 PL_formtarget = Nullsv;
479
480 /* clear utf8 character classes */
481 SvREFCNT_dec(PL_utf8_alnum);
482 SvREFCNT_dec(PL_utf8_alnumc);
483 SvREFCNT_dec(PL_utf8_ascii);
484 SvREFCNT_dec(PL_utf8_alpha);
485 SvREFCNT_dec(PL_utf8_space);
486 SvREFCNT_dec(PL_utf8_cntrl);
487 SvREFCNT_dec(PL_utf8_graph);
488 SvREFCNT_dec(PL_utf8_digit);
489 SvREFCNT_dec(PL_utf8_upper);
490 SvREFCNT_dec(PL_utf8_lower);
491 SvREFCNT_dec(PL_utf8_print);
492 SvREFCNT_dec(PL_utf8_punct);
493 SvREFCNT_dec(PL_utf8_xdigit);
494 SvREFCNT_dec(PL_utf8_mark);
495 SvREFCNT_dec(PL_utf8_toupper);
496 SvREFCNT_dec(PL_utf8_tolower);
497 PL_utf8_alnum = Nullsv;
498 PL_utf8_alnumc = Nullsv;
499 PL_utf8_ascii = Nullsv;
500 PL_utf8_alpha = Nullsv;
501 PL_utf8_space = Nullsv;
502 PL_utf8_cntrl = Nullsv;
503 PL_utf8_graph = Nullsv;
504 PL_utf8_digit = Nullsv;
505 PL_utf8_upper = Nullsv;
506 PL_utf8_lower = Nullsv;
507 PL_utf8_print = Nullsv;
508 PL_utf8_punct = Nullsv;
509 PL_utf8_xdigit = Nullsv;
510 PL_utf8_mark = Nullsv;
511 PL_utf8_toupper = Nullsv;
512 PL_utf8_totitle = Nullsv;
513 PL_utf8_tolower = Nullsv;
514
515 SvREFCNT_dec(PL_compiling.cop_warnings);
516 PL_compiling.cop_warnings = Nullsv;
517
a0d0e21e 518 /* Prepare to destruct main symbol table. */
5f05dabc 519
3280af22
NIS		 520 hv = PL_defstash;
521 PL_defstash = 0;
a0d0e21e 522 SvREFCNT_dec(hv);
5c831c24
GS		 523 SvREFCNT_dec(PL_curstname);
524 PL_curstname = Nullsv;
a0d0e21e 525
5a844595
GS		 526 /* clear queued errors */
527 SvREFCNT_dec(PL_errors);
528 PL_errors = Nullsv;
529
a0d0e21e 530 FREETMPS;
0453d815 531 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 532 if (PL_scopestack_ix != 0)
0453d815
PM		 533 Perl_warner(aTHX_ WARN_INTERNAL,
534 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 535 (long)PL_scopestack_ix);
536 if (PL_savestack_ix != 0)
0453d815
PM		 537 Perl_warner(aTHX_ WARN_INTERNAL,
538 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 539 (long)PL_savestack_ix);
540 if (PL_tmps_floor != -1)
0453d815 541 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 542 (long)PL_tmps_floor + 1);
a0d0e21e 543 if (cxstack_ix != -1)
0453d815 544 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 545 (long)cxstack_ix + 1);
a0d0e21e 546 }
8990e307
LW		 547
548 /* Now absolutely destruct everything, somehow or other, loops or no. */
8990e307 549 last_sv_count = 0;
3280af22
NIS		 550 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
551 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
552 last_sv_count = PL_sv_count;
8990e307
LW		 553 sv_clean_all();
554 }
3280af22
NIS		 555 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
556 SvFLAGS(PL_strtab) |= SVt_PVHV;
6e72f9df 557
558 /* Destruct the global string table. */
559 {
560 /* Yell and reset the HeVAL() slots that are still holding refcounts,
561 * so that sv_free() won't fail on them.
562 */
563 I32 riter;
564 I32 max;
565 HE *hent;
566 HE **array;
567
568 riter = 0;
3280af22
NIS		 569 max = HvMAX(PL_strtab);
570 array = HvARRAY(PL_strtab);
6e72f9df 571 hent = array[0];
572 for (;;) {
0453d815
PM		 573 if (hent && ckWARN_d(WARN_INTERNAL)) {
574 Perl_warner(aTHX_ WARN_INTERNAL,
575 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 576 HeVAL(hent) - Nullsv, HeKEY(hent));
577 HeVAL(hent) = Nullsv;
578 hent = HeNEXT(hent);
579 }
580 if (!hent) {
581 if (++riter > max)
582 break;
583 hent = array[riter];
584 }
585 }
586 }
3280af22 587 SvREFCNT_dec(PL_strtab);
6e72f9df 588
0453d815
PM		 589 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
590 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 591
4633a7c4 592 sv_free_arenas();
44a8e56a 593
594 /* No SVs have survived, need to clean out */
3280af22
NIS		 595 Safefree(PL_origfilename);
596 Safefree(PL_archpat_auto);
597 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 598 if (PL_reg_curpm)
599 Safefree(PL_reg_curpm);
82ba1be6 600 Safefree(PL_reg_poscache);
3280af22
NIS		 601 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
602 Safefree(PL_op_mask);
6e72f9df 603 nuke_stacks();
3280af22 604 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
a0d0e21e
LW		 605
606 DEBUG_P(debprofdump());
11343788 607#ifdef USE_THREADS
5f08fbcd 608 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 609 MUTEX_DESTROY(&PL_sv_mutex);
610 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 611 MUTEX_DESTROY(&PL_cred_mutex);
533c011a 612 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 613#ifdef EMULATE_ATOMIC_REFCOUNTS
614 MUTEX_DESTROY(&PL_svref_mutex);
615#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 616
8023c3ce 617 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 618 Safefree(SvPVX(PL_thrsv));
619 Safefree(SvANY(PL_thrsv));
620 Safefree(PL_thrsv);
621 PL_thrsv = Nullsv;
8023c3ce
MB		 622#endif /* USE_THREADS */
623
fc36a67e 624 /* As the absolutely last thing, free the non-arena SV for mess() */
625
3280af22 626 if (PL_mess_sv) {
9c63abab
GS		 627 /* it could have accumulated taint magic */
628 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
629 MAGIC* mg;
630 MAGIC* moremagic;
631 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
632 moremagic = mg->mg_moremagic;
633 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
634 Safefree(mg->mg_ptr);
635 Safefree(mg);
636 }
637 }
fc36a67e 638 /* we know that type >= SVt_PV */
3280af22
NIS		 639 SvOOK_off(PL_mess_sv);
640 Safefree(SvPVX(PL_mess_sv));
641 Safefree(SvANY(PL_mess_sv));
642 Safefree(PL_mess_sv);
643 PL_mess_sv = Nullsv;
fc36a67e 644 }
79072805
LW		 645}
646
647void
0cb96387 648perl_free(pTHXx)
79072805 649{
c5be433b 650#if defined(PERL_OBJECT)
7f0d82f7 651 PerlMem_free(this);
76e3520e 652#else
7f0d82f7 653 PerlMem_free(aTHXx);
76e3520e 654#endif
79072805
LW		 655}
656
4b556e6c 657void
864dbfa3 658Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 659{
3280af22
NIS		 660 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
661 PL_exitlist[PL_exitlistlen].fn = fn;
662 PL_exitlist[PL_exitlistlen].ptr = ptr;
663 ++PL_exitlistlen;
4b556e6c
JD		 664}
665
79072805 666int
0cb96387 667perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 668{
11343788 669 dTHR;
6224f72b 670 I32 oldscope;
6224f72b 671 int ret;
db36c5a1 672 dJMPENV;
cea2e8a9
GS		 673#ifdef USE_THREADS
674 dTHX;
675#endif
8d063cd8 676
a687059c
LW		 677#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
678#ifdef IAMSUID
679#undef IAMSUID
cea2e8a9 680 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 681setuid perl scripts securely.\n");
682#endif
683#endif
684
8f1f23e8 685#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
6e72f9df 686 _dyld_lookup_and_bind
687 ("__environ", (unsigned long *) &environ_pointer, NULL);
688#endif /* environ */
689
3280af22
NIS		 690 PL_origargv = argv;
691 PL_origargc = argc;
a0d0e21e 692#ifndef VMS /* VMS doesn't have environ array */
3280af22 693 PL_origenviron = environ;
a0d0e21e
LW		 694#endif
695
3280af22 696 if (PL_do_undump) {
a0d0e21e
LW		 697
698 /* Come here if running an undumped a.out. */
699
3280af22
NIS		 700 PL_origfilename = savepv(argv[0]);
701 PL_do_undump = FALSE;
a0d0e21e 702 cxstack_ix = -1; /* start label stack again */
748a9306 703 init_ids();
a0d0e21e
LW		 704 init_postdump_symbols(argc,argv,env);
705 return 0;
706 }
707
3280af22
NIS		 708 if (PL_main_root) {
709 PL_curpad = AvARRAY(PL_comppad);
710 op_free(PL_main_root);
711 PL_main_root = Nullop;
ff0cee69 712 }
3280af22
NIS		 713 PL_main_start = Nullop;
714 SvREFCNT_dec(PL_main_cv);
715 PL_main_cv = Nullcv;
79072805 716
3280af22
NIS		 717 time(&PL_basetime);
718 oldscope = PL_scopestack_ix;
599cee73 719 PL_dowarn = G_WARN_OFF;
f86702cc 720
db36c5a1
GS		 721 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_parse_body),
722 env, xsinit);
6224f72b 723 switch (ret) {
312caa8e 724 case 0:
4f25aa18
GS		 725 if (PL_stopav)
726 call_list(oldscope, PL_stopav);
312caa8e 727 return 0;
6224f72b
GS		 728 case 1:
729 STATUS_ALL_FAILURE;
730 /* FALL THROUGH */
731 case 2:
732 /* my_exit() was called */
3280af22 733 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 734 LEAVE;
735 FREETMPS;
3280af22 736 PL_curstash = PL_defstash;
4f25aa18
GS		 737 if (PL_stopav)
738 call_list(oldscope, PL_stopav);
6224f72b
GS		 739 return STATUS_NATIVE_EXPORT;
740 case 3:
bf49b057 741 PerlIO_printf(Perl_error_log, "panic: top_env\n");
6224f72b
GS		 742 return 1;
743 }
a6c40364 744 return 0;
312caa8e
CS		 745}
746
747STATIC void *
cea2e8a9 748S_parse_body(pTHX_ va_list args)
312caa8e
CS		 749{
750 dTHR;
751 int argc = PL_origargc;
752 char **argv = PL_origargv;
753 char **env = va_arg(args, char**);
754 char *scriptname = NULL;
755 int fdscript = -1;
756 VOL bool dosearch = FALSE;
757 char *validarg = "";
758 AV* comppadlist;
759 register SV *sv;
760 register char *s;
f4c556ac 761 char *cddir = Nullch;
312caa8e 762
864dbfa3 763 XSINIT_t xsinit = va_arg(args, XSINIT_t);
79072805 764
3280af22 765 sv_setpvn(PL_linestr,"",0);
79cb57f6 766 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 767 SAVEFREESV(sv);
768 init_main_stash();
54310121 769
6224f72b
GS		 770 for (argc--,argv++; argc > 0; argc--,argv++) {
771 if (argv[0][0] != '-' || !argv[0][1])
772 break;
773#ifdef DOSUID
774 if (*validarg)
775 validarg = " PHOOEY ";
776 else
777 validarg = argv[0];
13281fa4 778#endif
6224f72b
GS		 779 s = argv[0]+1;
780 reswitch:
781 switch (*s) {
1d5472a9
GS		 782#ifndef PERL_STRICT_CR
783 case '\r':
784#endif
6224f72b
GS		 785 case ' ':
786 case '0':
787 case 'F':
788 case 'a':
789 case 'c':
790 case 'd':
791 case 'D':
792 case 'h':
793 case 'i':
794 case 'l':
795 case 'M':
796 case 'm':
797 case 'n':
798 case 'p':
799 case 's':
800 case 'u':
801 case 'U':
802 case 'v':
599cee73
PM		 803 case 'W':
804 case 'X':
6224f72b
GS		 805 case 'w':
806 if (s = moreswitches(s))
807 goto reswitch;
808 break;
33b78306 809
6224f72b 810 case 'T':
3280af22 811 PL_tainting = TRUE;
6224f72b
GS		 812 s++;
813 goto reswitch;
f86702cc 814
6224f72b 815 case 'e':
3280af22 816 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 817 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 818 if (!PL_e_script) {
79cb57f6 819 PL_e_script = newSVpvn("",0);
0cb96387 820 filter_add(read_e_script, NULL);
6224f72b
GS		 821 }
822 if (*++s)
3280af22 823 sv_catpv(PL_e_script, s);
6224f72b 824 else if (argv[1]) {
3280af22 825 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 826 argc--,argv++;
827 }
828 else
cea2e8a9 829 Perl_croak(aTHX_ "No code specified for -e");
3280af22 830 sv_catpv(PL_e_script, "\n");
6224f72b 831 break;
afe37c7d 832
6224f72b
GS		 833 case 'I': /* -I handled both here and in moreswitches() */
834 forbid_setid("-I");
835 if (!*++s && (s=argv[1]) != Nullch) {
836 argc--,argv++;
837 }
838 while (s && isSPACE(*s))
839 ++s;
840 if (s && *s) {
841 char *e, *p;
842 for (e = s; *e && !isSPACE(*e); e++) ;
843 p = savepvn(s, e-s);
844 incpush(p, TRUE);
845 sv_catpv(sv,"-I");
846 sv_catpv(sv,p);
847 sv_catpv(sv," ");
848 Safefree(p);
849 } /* XXX else croak? */
850 break;
851 case 'P':
852 forbid_setid("-P");
3280af22 853 PL_preprocess = TRUE;
6224f72b
GS		 854 s++;
855 goto reswitch;
856 case 'S':
857 forbid_setid("-S");
858 dosearch = TRUE;
859 s++;
860 goto reswitch;
861 case 'V':
3280af22
NIS		 862 if (!PL_preambleav)
863 PL_preambleav = newAV();
864 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 865 if (*++s != ':') {
3280af22 866 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 867#ifdef VMS
6b88bc9c 868 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 869#else
3280af22 870 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 871#endif
3280af22 872 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 873# ifdef DEBUGGING
3280af22 874 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 875# endif
6224f72b 876# ifdef MULTIPLICITY
8f872242 877 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 878# endif
b363f7ed
GS		 879# ifdef USE_THREADS
880 sv_catpv(PL_Sv," USE_THREADS");
881# endif
882# ifdef PERL_OBJECT
883 sv_catpv(PL_Sv," PERL_OBJECT");
884# endif
885# ifdef PERL_IMPLICIT_CONTEXT
886 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
887# endif
888# ifdef PERL_IMPLICIT_SYS
889 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
890# endif
3280af22 891 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 892
6224f72b
GS		 893#if defined(LOCAL_PATCH_COUNT)
894 if (LOCAL_PATCH_COUNT > 0) {
895 int i;
3280af22 896 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 897 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 898 if (PL_localpatches[i])
cea2e8a9 899 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 900 }
901 }
902#endif
cea2e8a9 903 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 904#ifdef __DATE__
905# ifdef __TIME__
cea2e8a9 906 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 907# else
cea2e8a9 908 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 909# endif
910#endif
3280af22 911 sv_catpv(PL_Sv, "; \
6224f72b
GS		 912$\"=\"\\n \"; \
913@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
914print \" \\%ENV:\\n @env\\n\" if @env; \
915print \" \\@INC:\\n @INC\\n\";");
916 }
917 else {
3280af22
NIS		 918 PL_Sv = newSVpv("config_vars(qw(",0);
919 sv_catpv(PL_Sv, ++s);
920 sv_catpv(PL_Sv, "))");
6224f72b
GS		 921 s += strlen(s);
922 }
3280af22 923 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 924 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
925 goto reswitch;
926 case 'x':
3280af22 927 PL_doextract = TRUE;
6224f72b
GS		 928 s++;
929 if (*s)
f4c556ac 930 cddir = s;
6224f72b
GS		 931 break;
932 case 0:
933 break;
934 case '-':
935 if (!*++s || isSPACE(*s)) {
936 argc--,argv++;
937 goto switch_end;
938 }
939 /* catch use of gnu style long options */
940 if (strEQ(s, "version")) {
941 s = "v";
942 goto reswitch;
943 }
944 if (strEQ(s, "help")) {
945 s = "h";
946 goto reswitch;
947 }
948 s--;
949 /* FALL THROUGH */
950 default:
cea2e8a9 951 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 952 }
953 }
6224f72b 954 switch_end:
54310121 955
f675dbe5
CB		 956 if (
957#ifndef SECURE_INTERNAL_GETENV
958 !PL_tainting &&
959#endif
960 (s = PerlEnv_getenv("PERL5OPT"))) {
74288ac8
GS		 961 while (isSPACE(*s))
962 s++;
963 if (*s == '-' && *(s+1) == 'T')
964 PL_tainting = TRUE;
965 else {
966 while (s && *s) {
967 while (isSPACE(*s))
968 s++;
969 if (*s == '-') {
970 s++;
971 if (isSPACE(*s))
972 continue;
973 }
974 if (!*s)
975 break;
976 if (!strchr("DIMUdmw", *s))
cea2e8a9 977 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
74288ac8 978 s = moreswitches(s);
6224f72b 979 }
6224f72b
GS		 980 }
981 }
a0d0e21e 982
6224f72b
GS		 983 if (!scriptname)
984 scriptname = argv[0];
3280af22 985 if (PL_e_script) {
6224f72b
GS		 986 argc++,argv--;
987 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
988 }
989 else if (scriptname == Nullch) {
990#ifdef MSDOS
991 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
992 moreswitches("h");
993#endif
994 scriptname = "-";
995 }
996
997 init_perllib();
998
999 open_script(scriptname,dosearch,sv,&fdscript);
1000
1001 validate_suid(validarg, scriptname,fdscript);
1002
0b5b802d
GS		 1003#if defined(SIGCHLD) || defined(SIGCLD)
1004 {
1005#ifndef SIGCHLD
1006# define SIGCHLD SIGCLD
1007#endif
1008 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1009 if (sigstate == SIG_IGN) {
1010 if (ckWARN(WARN_SIGNAL))
1011 Perl_warner(aTHX_ WARN_SIGNAL,
1012 "Can't ignore signal CHLD, forcing to default");
1013 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1014 }
1015 }
1016#endif
1017
f4c556ac 1018 if (PL_doextract) {
6224f72b 1019 find_beginning();
f4c556ac
GS		 1020 if (cddir && PerlDir_chdir(cddir) < 0)
1021 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1022
1023 }
6224f72b 1024
3280af22
NIS		 1025 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1026 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1027 CvUNIQUE_on(PL_compcv);
1028
1029 PL_comppad = newAV();
1030 av_push(PL_comppad, Nullsv);
1031 PL_curpad = AvARRAY(PL_comppad);
1032 PL_comppad_name = newAV();
1033 PL_comppad_name_fill = 0;
1034 PL_min_intro_pending = 0;
1035 PL_padix = 0;
6224f72b 1036#ifdef USE_THREADS
79cb57f6 1037 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1038 PL_curpad[0] = (SV*)newAV();
1039 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1040 CvOWNER(PL_compcv) = 0;
1041 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1042 MUTEX_INIT(CvMUTEXP(PL_compcv));
6224f72b
GS		 1043#endif /* USE_THREADS */
1044
1045 comppadlist = newAV();
1046 AvREAL_off(comppadlist);
3280af22
NIS		 1047 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1048 av_store(comppadlist, 1, (SV*)PL_comppad);
1049 CvPADLIST(PL_compcv) = comppadlist;
6224f72b
GS		 1050
1051 boot_core_UNIVERSAL();
09bef843 1052 boot_core_xsutils();
6224f72b
GS		 1053
1054 if (xsinit)
0cb96387 1055 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
6224f72b 1056#if defined(VMS) || defined(WIN32) || defined(DJGPP)
c5be433b 1057 init_os_extras();
6224f72b
GS		 1058#endif
1059
29209bc5
JH		 1060#ifdef USE_SOCKS
1061 SOCKSinit(argv[0]);
1062#endif
1063
6224f72b
GS		 1064 init_predump_symbols();
1065 /* init_postdump_symbols not currently designed to be called */
1066 /* more than once (ENV isn't cleared first, for example) */
1067 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1068 if (!PL_do_undump)
6224f72b
GS		 1069 init_postdump_symbols(argc,argv,env);
1070
1071 init_lexer();
1072
1073 /* now parse the script */
1074
1075 SETERRNO(0,SS$_NORMAL);
3280af22
NIS		 1076 PL_error_count = 0;
1077 if (yyparse() || PL_error_count) {
1078 if (PL_minus_c)
cea2e8a9 1079 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1080 else {
cea2e8a9 1081 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1082 PL_origfilename);
6224f72b
GS		 1083 }
1084 }
3280af22
NIS		 1085 PL_curcop->cop_line = 0;
1086 PL_curstash = PL_defstash;
1087 PL_preprocess = FALSE;
1088 if (PL_e_script) {
1089 SvREFCNT_dec(PL_e_script);
1090 PL_e_script = Nullsv;
6224f72b
GS		 1091 }
1092
1093 /* now that script is parsed, we can modify record separator */
3280af22
NIS		 1094 SvREFCNT_dec(PL_rs);
1095 PL_rs = SvREFCNT_inc(PL_nrs);
864dbfa3 1096 sv_setsv(get_sv("/", TRUE), PL_rs);
3280af22 1097 if (PL_do_undump)
6224f72b
GS		 1098 my_unexec();
1099
0453d815 1100 if (isWARN_ONCE)
3280af22 1101 gv_check(PL_defstash);
6224f72b
GS		 1102
1103 LEAVE;
1104 FREETMPS;
1105
1106#ifdef MYMALLOC
1107 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1108 dump_mstats("after compilation:");
1109#endif
1110
1111 ENTER;
3280af22 1112 PL_restartop = 0;
312caa8e 1113 return NULL;
6224f72b
GS		 1114}
1115
1116int
0cb96387 1117perl_run(pTHXx)
6224f72b 1118{
de616352 1119 dTHR;
6224f72b 1120 I32 oldscope;
6224f72b 1121 int ret;
db36c5a1 1122 dJMPENV;
cea2e8a9
GS		 1123#ifdef USE_THREADS
1124 dTHX;
1125#endif
6224f72b 1126
3280af22 1127 oldscope = PL_scopestack_ix;
6224f72b 1128
312caa8e 1129 redo_body:
db36c5a1 1130 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_run_body), oldscope);
6224f72b
GS		 1131 switch (ret) {
1132 case 1:
1133 cxstack_ix = -1; /* start context stack again */
312caa8e
CS		 1134 goto redo_body;
1135 case 0: /* normal completion */
1136 case 2: /* my_exit() */
3280af22 1137 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1138 LEAVE;
1139 FREETMPS;
3280af22 1140 PL_curstash = PL_defstash;
865be832 1141 if (PL_endav && !PL_minus_c)
3280af22 1142 call_list(oldscope, PL_endav);
6224f72b
GS		 1143#ifdef MYMALLOC
1144 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1145 dump_mstats("after execution: ");
1146#endif
6224f72b
GS		 1147 return STATUS_NATIVE_EXPORT;
1148 case 3:
312caa8e
CS		 1149 if (PL_restartop) {
1150 POPSTACK_TO(PL_mainstack);
1151 goto redo_body;
6224f72b 1152 }
bf49b057 1153 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 1154 FREETMPS;
1155 return 1;
6224f72b
GS		 1156 }
1157
312caa8e
CS		 1158 /* NOTREACHED */
1159 return 0;
1160}
1161
1162STATIC void *
cea2e8a9 1163S_run_body(pTHX_ va_list args)
312caa8e
CS		 1164{
1165 dTHR;
1166 I32 oldscope = va_arg(args, I32);
1167
6224f72b 1168 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1169 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1170
3280af22 1171 if (!PL_restartop) {
6224f72b
GS		 1172 DEBUG_x(dump_all());
1173 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1174 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1175 PTR2UV(thr)));
6224f72b 1176
3280af22 1177 if (PL_minus_c) {
bf49b057 1178 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS		 1179 my_exit(0);
1180 }
3280af22 1181 if (PERLDB_SINGLE && PL_DBsingle)
312caa8e 1182 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1183 if (PL_initav)
1184 call_list(oldscope, PL_initav);
6224f72b
GS		 1185 }
1186
1187 /* do it */
1188
3280af22 1189 if (PL_restartop) {
533c011a 1190 PL_op = PL_restartop;
3280af22 1191 PL_restartop = 0;
cea2e8a9 1192 CALLRUNOPS(aTHX);
6224f72b 1193 }
3280af22
NIS		 1194 else if (PL_main_start) {
1195 CvDEPTH(PL_main_cv) = 1;
533c011a 1196 PL_op = PL_main_start;
cea2e8a9 1197 CALLRUNOPS(aTHX);
6224f72b
GS		 1198 }
1199
f6b3007c
JH		 1200 my_exit(0);
1201 /* NOTREACHED */
312caa8e 1202 return NULL;
6224f72b
GS		 1203}
1204
1205SV*
864dbfa3 1206Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1207{
1208 GV *gv;
1209#ifdef USE_THREADS
1210 if (name[1] == '\0' && !isALPHA(name[0])) {
1211 PADOFFSET tmp = find_threadsv(name);
1212 if (tmp != NOT_IN_PAD) {
1213 dTHR;
1214 return THREADSV(tmp);
1215 }
1216 }
1217#endif /* USE_THREADS */
1218 gv = gv_fetchpv(name, create, SVt_PV);
1219 if (gv)
1220 return GvSV(gv);
1221 return Nullsv;
1222}
1223
1224AV*
864dbfa3 1225Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1226{
1227 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1228 if (create)
1229 return GvAVn(gv);
1230 if (gv)
1231 return GvAV(gv);
1232 return Nullav;
1233}
1234
1235HV*
864dbfa3 1236Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1237{
a0d0e21e
LW		 1238 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1239 if (create)
1240 return GvHVn(gv);
1241 if (gv)
1242 return GvHV(gv);
1243 return Nullhv;
1244}
1245
1246CV*
864dbfa3 1247Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1248{
1249 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1250 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1251 /* XXX this is probably not what they think they're getting.
1252 * It has the same effect as "sub name;", i.e. just a forward
1253 * declaration! */
8ebc5c01 1254 if (create && !GvCVu(gv))
774d564b 1255 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1256 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1257 Nullop,
a0d0e21e
LW		 1258 Nullop);
1259 if (gv)
8ebc5c01 1260 return GvCVu(gv);
a0d0e21e
LW		 1261 return Nullcv;
1262}
1263
79072805
LW		 1264/* Be sure to refetch the stack pointer after calling these routines. */
1265
a0d0e21e 1266I32
864dbfa3 1267Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
8ac85365
NIS		 1268
1269 /* See G_* flags in cop.h */
1270 /* null terminated arg list */
8990e307 1271{
a0d0e21e 1272 dSP;
8990e307 1273
924508f0 1274 PUSHMARK(SP);
a0d0e21e 1275 if (argv) {
8990e307 1276 while (*argv) {
a0d0e21e 1277 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1278 argv++;
1279 }
a0d0e21e 1280 PUTBACK;
8990e307 1281 }
864dbfa3 1282 return call_pv(sub_name, flags);
8990e307
LW		 1283}
1284
a0d0e21e 1285I32
864dbfa3 1286Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1287 /* name of the subroutine */
1288 /* See G_* flags in cop.h */
a0d0e21e 1289{
864dbfa3 1290 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1291}
1292
1293I32
864dbfa3 1294Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1295 /* name of the subroutine */
1296 /* See G_* flags in cop.h */
a0d0e21e
LW		 1297{
1298 dSP;
1299 OP myop;
533c011a
NIS		 1300 if (!PL_op)
1301 PL_op = &myop;
a0d0e21e
LW		 1302 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1303 PUTBACK;
cea2e8a9 1304 pp_method();
533c011a
NIS		 1305 if(PL_op == &myop)
1306 PL_op = Nullop;
864dbfa3 1307 return call_sv(*PL_stack_sp--, flags);
a0d0e21e
LW		 1308}
1309
1310/* May be called with any of a CV, a GV, or an SV containing the name. */
1311I32
864dbfa3 1312Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365
NIS		 1313
1314 /* See G_* flags in cop.h */
a0d0e21e 1315{
924508f0 1316 dSP;
a0d0e21e 1317 LOGOP myop; /* fake syntax tree node */
aa689395 1318 I32 oldmark;
a0d0e21e 1319 I32 retval;
a0d0e21e 1320 I32 oldscope;
54310121 1321 bool oldcatch = CATCH_GET;
6224f72b 1322 int ret;
533c011a 1323 OP* oldop = PL_op;
db36c5a1 1324 dJMPENV;
1e422769 1325
a0d0e21e
LW		 1326 if (flags & G_DISCARD) {
1327 ENTER;
1328 SAVETMPS;
1329 }
1330
aa689395 1331 Zero(&myop, 1, LOGOP);
54310121 1332 myop.op_next = Nullop;
f51d4af5 1333 if (!(flags & G_NOARGS))
aa689395 1334 myop.op_flags |= OPf_STACKED;
54310121 1335 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1336 (flags & G_ARRAY) ? OPf_WANT_LIST :
1337 OPf_WANT_SCALAR);
462e5cf6 1338 SAVEOP();
533c011a 1339 PL_op = (OP*)&myop;
aa689395 1340
3280af22
NIS		 1341 EXTEND(PL_stack_sp, 1);
1342 *++PL_stack_sp = sv;
aa689395 1343 oldmark = TOPMARK;
3280af22 1344 oldscope = PL_scopestack_ix;
a0d0e21e 1345
3280af22 1346 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1347 /* Handle first BEGIN of -d. */
3280af22 1348 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1349 /* Try harder, since this may have been a sighandler, thus
1350 * curstash may be meaningless. */
3280af22 1351 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1352 && !(flags & G_NODEBUG))
533c011a 1353 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1354
312caa8e 1355 if (!(flags & G_EVAL)) {
0cdb2077 1356 CATCH_SET(TRUE);
864dbfa3 1357 call_xbody((OP*)&myop, FALSE);
312caa8e 1358 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1359 CATCH_SET(oldcatch);
312caa8e
CS		 1360 }
1361 else {
533c011a 1362 cLOGOP->op_other = PL_op;
3280af22 1363 PL_markstack_ptr--;
4633a7c4
LW		 1364 /* we're trying to emulate pp_entertry() here */
1365 {
c09156bb 1366 register PERL_CONTEXT *cx;
54310121 1367 I32 gimme = GIMME_V;
4633a7c4
LW		 1368
1369 ENTER;
1370 SAVETMPS;
1371
533c011a 1372 push_return(PL_op->op_next);
3280af22 1373 PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp);
4633a7c4 1374 PUSHEVAL(cx, 0, 0);
533c011a 1375 PL_eval_root = PL_op; /* Only needed so that goto works right. */
4633a7c4 1376
faef0170 1377 PL_in_eval = EVAL_INEVAL;
4633a7c4 1378 if (flags & G_KEEPERR)
faef0170 1379 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1380 else
38a03e6e 1381 sv_setpv(ERRSV,"");
4633a7c4 1382 }
3280af22 1383 PL_markstack_ptr++;
a0d0e21e 1384
312caa8e 1385 redo_body:
db36c5a1
GS		 1386 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_call_body),
1387 (OP*)&myop, FALSE);
6224f72b
GS		 1388 switch (ret) {
1389 case 0:
312caa8e
CS		 1390 retval = PL_stack_sp - (PL_stack_base + oldmark);
1391 if (!(flags & G_KEEPERR))
1392 sv_setpv(ERRSV,"");
a0d0e21e 1393 break;
6224f72b 1394 case 1:
f86702cc 1395 STATUS_ALL_FAILURE;
a0d0e21e 1396 /* FALL THROUGH */
6224f72b 1397 case 2:
a0d0e21e 1398 /* my_exit() was called */
3280af22 1399 PL_curstash = PL_defstash;
a0d0e21e 1400 FREETMPS;
3280af22 1401 if (PL_statusvalue)
cea2e8a9 1402 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1403 my_exit_jump();
a0d0e21e 1404 /* NOTREACHED */
6224f72b 1405 case 3:
3280af22 1406 if (PL_restartop) {
533c011a 1407 PL_op = PL_restartop;
3280af22 1408 PL_restartop = 0;
312caa8e 1409 goto redo_body;
a0d0e21e 1410 }
3280af22 1411 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1412 if (flags & G_ARRAY)
1413 retval = 0;
1414 else {
1415 retval = 1;
3280af22 1416 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1417 }
312caa8e 1418 break;
a0d0e21e 1419 }
a0d0e21e 1420
3280af22 1421 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1422 SV **newsp;
1423 PMOP *newpm;
1424 I32 gimme;
c09156bb 1425 register PERL_CONTEXT *cx;
a0a2876f
LW		 1426 I32 optype;
1427
1428 POPBLOCK(cx,newpm);
1429 POPEVAL(cx);
1430 pop_return();
3280af22 1431 PL_curpm = newpm;
a0a2876f 1432 LEAVE;
a0d0e21e 1433 }
a0d0e21e 1434 }
1e422769 1435
a0d0e21e 1436 if (flags & G_DISCARD) {
3280af22 1437 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1438 retval = 0;
1439 FREETMPS;
1440 LEAVE;
1441 }
533c011a 1442 PL_op = oldop;
a0d0e21e
LW		 1443 return retval;
1444}
1445
312caa8e 1446STATIC void *
cea2e8a9 1447S_call_body(pTHX_ va_list args)
312caa8e
CS		 1448{
1449 OP *myop = va_arg(args, OP*);
1450 int is_eval = va_arg(args, int);
1451
864dbfa3 1452 call_xbody(myop, is_eval);
312caa8e
CS		 1453 return NULL;
1454}
1455
1456STATIC void
cea2e8a9 1457S_call_xbody(pTHX_ OP *myop, int is_eval)
312caa8e
CS		 1458{
1459 dTHR;
1460
1461 if (PL_op == myop) {
1462 if (is_eval)
cea2e8a9 1463 PL_op = Perl_pp_entereval(aTHX);
312caa8e 1464 else
cea2e8a9 1465 PL_op = Perl_pp_entersub(aTHX);
312caa8e
CS		 1466 }
1467 if (PL_op)
cea2e8a9 1468 CALLRUNOPS(aTHX);
312caa8e
CS		 1469}
1470
6e72f9df 1471/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1472
a0d0e21e 1473I32
864dbfa3 1474Perl_eval_sv(pTHX_ SV *sv, I32 flags)
8ac85365
NIS		 1475
1476 /* See G_* flags in cop.h */
a0d0e21e 1477{
924508f0 1478 dSP;
a0d0e21e 1479 UNOP myop; /* fake syntax tree node */
3280af22 1480 I32 oldmark = SP - PL_stack_base;
4633a7c4 1481 I32 retval;
4633a7c4 1482 I32 oldscope;
6224f72b 1483 int ret;
533c011a 1484 OP* oldop = PL_op;
db36c5a1 1485 dJMPENV;
84902520 1486
4633a7c4
LW		 1487 if (flags & G_DISCARD) {
1488 ENTER;
1489 SAVETMPS;
1490 }
1491
462e5cf6 1492 SAVEOP();
533c011a
NIS		 1493 PL_op = (OP*)&myop;
1494 Zero(PL_op, 1, UNOP);
3280af22
NIS		 1495 EXTEND(PL_stack_sp, 1);
1496 *++PL_stack_sp = sv;
1497 oldscope = PL_scopestack_ix;
79072805 1498
4633a7c4
LW		 1499 if (!(flags & G_NOARGS))
1500 myop.op_flags = OPf_STACKED;
79072805 1501 myop.op_next = Nullop;
6e72f9df 1502 myop.op_type = OP_ENTEREVAL;
54310121 1503 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1504 (flags & G_ARRAY) ? OPf_WANT_LIST :
1505 OPf_WANT_SCALAR);
6e72f9df 1506 if (flags & G_KEEPERR)
1507 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1508
312caa8e 1509 redo_body:
db36c5a1
GS		 1510 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_call_body),
1511 (OP*)&myop, TRUE);
6224f72b
GS		 1512 switch (ret) {
1513 case 0:
312caa8e
CS		 1514 retval = PL_stack_sp - (PL_stack_base + oldmark);
1515 if (!(flags & G_KEEPERR))
1516 sv_setpv(ERRSV,"");
4633a7c4 1517 break;
6224f72b 1518 case 1:
f86702cc 1519 STATUS_ALL_FAILURE;
4633a7c4 1520 /* FALL THROUGH */
6224f72b 1521 case 2:
4633a7c4 1522 /* my_exit() was called */
3280af22 1523 PL_curstash = PL_defstash;
4633a7c4 1524 FREETMPS;
3280af22 1525 if (PL_statusvalue)
cea2e8a9 1526 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1527 my_exit_jump();
4633a7c4 1528 /* NOTREACHED */
6224f72b 1529 case 3:
3280af22 1530 if (PL_restartop) {
533c011a 1531 PL_op = PL_restartop;
3280af22 1532 PL_restartop = 0;
312caa8e 1533 goto redo_body;
4633a7c4 1534 }
3280af22 1535 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1536 if (flags & G_ARRAY)
1537 retval = 0;
1538 else {
1539 retval = 1;
3280af22 1540 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 1541 }
312caa8e 1542 break;
4633a7c4
LW		 1543 }
1544
4633a7c4 1545 if (flags & G_DISCARD) {
3280af22 1546 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 1547 retval = 0;
1548 FREETMPS;
1549 LEAVE;
1550 }
533c011a 1551 PL_op = oldop;
4633a7c4
LW		 1552 return retval;
1553}
1554
137443ea 1555SV*
864dbfa3 1556Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 1557{
1558 dSP;
1559 SV* sv = newSVpv(p, 0);
1560
924508f0 1561 PUSHMARK(SP);
864dbfa3 1562 eval_sv(sv, G_SCALAR);
137443ea 1563 SvREFCNT_dec(sv);
1564
1565 SPAGAIN;
1566 sv = POPs;
1567 PUTBACK;
1568
2d8e6c8d
GS		 1569 if (croak_on_error && SvTRUE(ERRSV)) {
1570 STRLEN n_a;
cea2e8a9 1571 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 1572 }
137443ea 1573
1574 return sv;
1575}
1576
4633a7c4
LW		 1577/* Require a module. */
1578
1579void
864dbfa3 1580Perl_require_pv(pTHX_ const char *pv)
4633a7c4 1581{
d3acc0f7
JP		 1582 SV* sv;
1583 dSP;
e788e7d3 1584 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 1585 PUTBACK;
1586 sv = sv_newmortal();
4633a7c4
LW		 1587 sv_setpv(sv, "require '");
1588 sv_catpv(sv, pv);
1589 sv_catpv(sv, "'");
864dbfa3 1590 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 1591 SPAGAIN;
1592 POPSTACK;
79072805
LW		 1593}
1594
79072805 1595void
864dbfa3 1596Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 1597{
1598 register GV *gv;
1599
85e6fe83 1600 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
79072805
LW		 1601 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1602}
1603
76e3520e 1604STATIC void
cea2e8a9 1605S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 1606{
ab821d7f 1607 /* This message really ought to be max 23 lines.
1608 * Removed -h because the user already knows that opton. Others? */
fb73857a 1609
76e3520e 1610 static char *usage_msg[] = {
fb73857a 1611"-0[octal] specify record separator (\\0, if no argument)",
1612"-a autosplit mode with -n or -p (splits $_ into @F)",
1613"-c check syntax only (runs BEGIN and END blocks)",
aac3bd0d
GS		 1614"-d[:debugger] run program under debugger",
1615"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1616"-e 'command' one line of program (several -e's allowed, omit programfile)",
1617"-F/pattern/ split() pattern for -a switch (//'s are optional)",
1618"-i[extension] edit <> files in place (makes backup if extension supplied)",
1619"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 1620"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 1621"-[mM][-]module execute `use/no module...' before executing program",
1622"-n assume 'while (<>) { ... }' loop around program",
1623"-p assume loop like -n but print line also, like sed",
1624"-P run program through C preprocessor before compilation",
1625"-s enable rudimentary parsing for switches after programfile",
1626"-S look for programfile using PATH environment variable",
1627"-T enable tainting checks",
1628"-u dump core after parsing program",
fb73857a 1629"-U allow unsafe operations",
aac3bd0d
GS		 1630"-v print version, subversion (includes VERY IMPORTANT perl info)",
1631"-V[:variable] print configuration summary (or a single Config.pm variable)",
1632"-w enable many useful warnings (RECOMMENDED)",
fb73857a 1633"-x[directory] strip off text before #!perl line and perhaps cd to directory",
1634"\n",
1635NULL
1636};
76e3520e 1637 char **p = usage_msg;
fb73857a 1638
ab821d7f 1639 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
fb73857a 1640 while (*p)
1641 printf("\n %s", *p++);
4633a7c4
LW		 1642}
1643
79072805
LW		 1644/* This routine handles any switches that can be given during run */
1645
1646char *
864dbfa3 1647Perl_moreswitches(pTHX_ char *s)
79072805
LW		 1648{
1649 I32 numlen;
c07a80fd 1650 U32 rschar;
79072805
LW		 1651
1652 switch (*s) {
1653 case '0':
a863c7d1
MB		 1654 {
1655 dTHR;
dff6d3cd 1656 rschar = (U32)scan_oct(s, 4, &numlen);
3280af22 1657 SvREFCNT_dec(PL_nrs);
c07a80fd 1658 if (rschar & ~((U8)~0))
3280af22 1659 PL_nrs = &PL_sv_undef;
c07a80fd 1660 else if (!rschar && numlen >= 2)
79cb57f6 1661 PL_nrs = newSVpvn("", 0);
c07a80fd 1662 else {
1663 char ch = rschar;
79cb57f6 1664 PL_nrs = newSVpvn(&ch, 1);
79072805
LW		 1665 }
1666 return s + numlen;
a863c7d1 1667 }
2304df62 1668 case 'F':
3280af22
NIS		 1669 PL_minus_F = TRUE;
1670 PL_splitstr = savepv(s + 1);
2304df62
AD		 1671 s += strlen(s);
1672 return s;
79072805 1673 case 'a':
3280af22 1674 PL_minus_a = TRUE;
79072805
LW		 1675 s++;
1676 return s;
1677 case 'c':
3280af22 1678 PL_minus_c = TRUE;
79072805
LW		 1679 s++;
1680 return s;
1681 case 'd':
bbce6d69 1682 forbid_setid("-d");
4633a7c4 1683 s++;
c07a80fd 1684 if (*s == ':' || *s == '=') {
cea2e8a9 1685 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
4633a7c4 1686 s += strlen(s);
4633a7c4 1687 }
5c831c24 1688 if (!PL_perldb)
3280af22 1689 PL_perldb = PERLDB_ALL;
5c831c24 1690 if (!PL_debstash)
a0d0e21e 1691 init_debugger();
79072805
LW		 1692 return s;
1693 case 'D':
0453d815 1694 {
79072805 1695#ifdef DEBUGGING
bbce6d69 1696 forbid_setid("-D");
79072805 1697 if (isALPHA(s[1])) {
8b73bbec 1698 static char debopts[] = "psltocPmfrxuLHXDS";
79072805
LW		 1699 char *d;
1700
93a17b20 1701 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 1702 PL_debug |= 1 << (d - debopts);
79072805
LW		 1703 }
1704 else {
3280af22 1705 PL_debug = atoi(s+1);
79072805
LW		 1706 for (s++; isDIGIT(*s); s++) ;
1707 }
3280af22 1708 PL_debug |= 0x80000000;
79072805 1709#else
0453d815
PM		 1710 dTHR;
1711 if (ckWARN_d(WARN_DEBUGGING))
1712 Perl_warner(aTHX_ WARN_DEBUGGING,
1713 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 1714 for (s++; isALNUM(*s); s++) ;
79072805
LW		 1715#endif
1716 /*SUPPRESS 530*/
1717 return s;
0453d815 1718 }
4633a7c4 1719 case 'h':
3280af22 1720 usage(PL_origargv[0]);
6ad3d225 1721 PerlProc_exit(0);
79072805 1722 case 'i':
3280af22
NIS		 1723 if (PL_inplace)
1724 Safefree(PL_inplace);
1725 PL_inplace = savepv(s+1);
79072805 1726 /*SUPPRESS 530*/
3280af22 1727 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 1728 if (*s) {
fb73857a 1729 *s++ = '\0';
7b8d334a
GS		 1730 if (*s == '-') /* Additional switches on #! line. */
1731 s++;
1732 }
fb73857a 1733 return s;
1734 case 'I': /* -I handled both here and in parse_perl() */
bbce6d69 1735 forbid_setid("-I");
fb73857a 1736 ++s;
1737 while (*s && isSPACE(*s))
1738 ++s;
1739 if (*s) {
774d564b 1740 char *e, *p;
748a9306 1741 for (e = s; *e && !isSPACE(*e); e++) ;
774d564b 1742 p = savepvn(s, e-s);
1743 incpush(p, TRUE);
1744 Safefree(p);
fb73857a 1745 s = e;
79072805
LW		 1746 }
1747 else
cea2e8a9 1748 Perl_croak(aTHX_ "No space allowed after -I");
fb73857a 1749 return s;
79072805 1750 case 'l':
3280af22 1751 PL_minus_l = TRUE;
79072805 1752 s++;
3280af22
NIS		 1753 if (PL_ors)
1754 Safefree(PL_ors);
79072805 1755 if (isDIGIT(*s)) {
3280af22
NIS		 1756 PL_ors = savepv("\n");
1757 PL_orslen = 1;
dff6d3cd 1758 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
79072805
LW		 1759 s += numlen;
1760 }
1761 else {
a863c7d1 1762 dTHR;
3280af22
NIS		 1763 if (RsPARA(PL_nrs)) {
1764 PL_ors = "\n\n";
1765 PL_orslen = 2;
c07a80fd 1766 }
1767 else
3280af22
NIS		 1768 PL_ors = SvPV(PL_nrs, PL_orslen);
1769 PL_ors = savepvn(PL_ors, PL_orslen);
79072805
LW		 1770 }
1771 return s;
1a30305b 1772 case 'M':
bbce6d69 1773 forbid_setid("-M"); /* XXX ? */
1a30305b 1774 /* FALL THROUGH */
1775 case 'm':
bbce6d69 1776 forbid_setid("-m"); /* XXX ? */
1a30305b 1777 if (*++s) {
a5f75d66 1778 char *start;
11343788 1779 SV *sv;
a5f75d66
AD		 1780 char *use = "use ";
1781 /* -M-foo == 'no foo' */
1782 if (*s == '-') { use = "no "; ++s; }
11343788 1783 sv = newSVpv(use,0);
a5f75d66 1784 start = s;
1a30305b 1785 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 1786 while(isALNUM(*s) || *s==':') ++s;
1787 if (*s != '=') {
11343788 1788 sv_catpv(sv, start);
c07a80fd 1789 if (*(start-1) == 'm') {
1790 if (*s != '\0')
cea2e8a9 1791 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 1792 sv_catpv( sv, " ()");
c07a80fd 1793 }
1794 } else {
11343788
MB		 1795 sv_catpvn(sv, start, s-start);
1796 sv_catpv(sv, " split(/,/,q{");
1797 sv_catpv(sv, ++s);
1798 sv_catpv(sv, "})");
c07a80fd 1799 }
1a30305b 1800 s += strlen(s);
5c831c24 1801 if (!PL_preambleav)
3280af22
NIS		 1802 PL_preambleav = newAV();
1803 av_push(PL_preambleav, sv);
1a30305b 1804 }
1805 else
cea2e8a9 1806 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 1807 return s;
79072805 1808 case 'n':
3280af22 1809 PL_minus_n = TRUE;
79072805
LW		 1810 s++;
1811 return s;
1812 case 'p':
3280af22 1813 PL_minus_p = TRUE;
79072805
LW		 1814 s++;
1815 return s;
1816 case 's':
bbce6d69 1817 forbid_setid("-s");
3280af22 1818 PL_doswitches = TRUE;
79072805
LW		 1819 s++;
1820 return s;
463ee0b2 1821 case 'T':
3280af22 1822 if (!PL_tainting)
cea2e8a9 1823 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 1824 s++;
1825 return s;
79072805 1826 case 'u':
3280af22 1827 PL_do_undump = TRUE;
79072805
LW		 1828 s++;
1829 return s;
1830 case 'U':
3280af22 1831 PL_unsafe = TRUE;
79072805
LW		 1832 s++;
1833 return s;
1834 case 'v':
cceca5ed
GS		 1835#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
1836 printf("\nThis is perl, version %d.%03d_%02d built for %s",
1837 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION, ARCHNAME);
a5f75d66 1838#else
fb73857a 1839 printf("\nThis is perl, version %s built for %s",
6b88bc9c 1840 PL_patchlevel, ARCHNAME);
fb73857a 1841#endif
1842#if defined(LOCAL_PATCH_COUNT)
1843 if (LOCAL_PATCH_COUNT > 0)
1844 printf("\n(with %d registered patch%s, see perl -V for more detail)",
b900a521 1845 (int)LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 1846#endif
1a30305b 1847
4eb8286e 1848 printf("\n\nCopyright 1987-1999, Larry Wall\n");
79072805 1849#ifdef MSDOS
fb73857a 1850 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 1851#endif
1852#ifdef DJGPP
1853 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
4eb8286e 1854 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 1855#endif
79072805 1856#ifdef OS2
5dd60ef7 1857 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
4eb8286e 1858 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
79072805 1859#endif
79072805 1860#ifdef atarist
760ac839 1861 printf("atariST series port, ++jrb bammi@cadence.com\n");
79072805 1862#endif
a3f9223b 1863#ifdef __BEOS__
4eb8286e 1864 printf("BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 1865#endif
1d84e8df 1866#ifdef MPE
4eb8286e 1867 printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
1d84e8df 1868#endif
9d116dd7 1869#ifdef OEMVS
4eb8286e 1870 printf("MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 1871#endif
495c5fdc 1872#ifdef __VOS__
4eb8286e 1873 printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
495c5fdc 1874#endif
092bebab 1875#ifdef __OPEN_VM
4eb8286e 1876 printf("VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 1877#endif
a1a0e61e 1878#ifdef POSIX_BC
4eb8286e 1879 printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 1880#endif
61ae2fbf 1881#ifdef __MINT__
4eb8286e 1882 printf("MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 1883#endif
baed7233
DL		 1884#ifdef BINARY_BUILD_NOTICE
1885 BINARY_BUILD_NOTICE;
1886#endif
760ac839 1887 printf("\n\
79072805 1888Perl may be copied only under the terms of either the Artistic License or the\n\
95103687
GS		 1889GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1890Complete documentation for Perl, including FAQ lists, should be found on\n\
1891this system using `man perl' or `perldoc perl'. If you have access to the\n\
1892Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 1893 PerlProc_exit(0);
79072805 1894 case 'w':
599cee73
PM		 1895 if (! (PL_dowarn & G_WARN_ALL_MASK))
1896 PL_dowarn |= G_WARN_ON;
1897 s++;
1898 return s;
1899 case 'W':
1900 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
e24b16f9 1901 PL_compiling.cop_warnings = WARN_ALL ;
599cee73
PM		 1902 s++;
1903 return s;
1904 case 'X':
1905 PL_dowarn = G_WARN_ALL_OFF;
e24b16f9 1906 PL_compiling.cop_warnings = WARN_NONE ;
79072805
LW		 1907 s++;
1908 return s;
a0d0e21e 1909 case '*':
79072805
LW		 1910 case ' ':
1911 if (s[1] == '-') /* Additional switches on #! line. */
1912 return s+2;
1913 break;
a0d0e21e 1914 case '-':
79072805 1915 case 0:
51882d45 1916#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 1917 case '\r':
1918#endif
79072805
LW		 1919 case '\n':
1920 case '\t':
1921 break;
aa689395 1922#ifdef ALTERNATE_SHEBANG
1923 case 'S': /* OS/2 needs -S on "extproc" line. */
1924 break;
1925#endif
a0d0e21e 1926 case 'P':
3280af22 1927 if (PL_preprocess)
a0d0e21e
LW		 1928 return s+1;
1929 /* FALL THROUGH */
79072805 1930 default:
cea2e8a9 1931 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 1932 }
1933 return Nullch;
1934}
1935
1936/* compliments of Tom Christiansen */
1937
1938/* unexec() can be found in the Gnu emacs distribution */
ee580363 1939/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 1940
1941void
864dbfa3 1942Perl_my_unexec(pTHX)
79072805
LW		 1943{
1944#ifdef UNEXEC
46fc3d4c 1945 SV* prog;
1946 SV* file;
ee580363 1947 int status = 1;
79072805
LW		 1948 extern int etext;
1949
ee580363 1950 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 1951 sv_catpv(prog, "/perl");
6b88bc9c 1952 file = newSVpv(PL_origfilename, 0);
46fc3d4c 1953 sv_catpv(file, ".perldump");
79072805 1954
ee580363
GS		 1955 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1956 /* unexec prints msg to stderr in case of failure */
6ad3d225 1957 PerlProc_exit(status);
79072805 1958#else
a5f75d66
AD		 1959# ifdef VMS
1960# include <lib$routines.h>
1961 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 1962# else
79072805 1963 ABORT(); /* for use with undump */
aa689395 1964# endif
a5f75d66 1965#endif
79072805
LW		 1966}
1967
cb68f92d
GS		 1968/* initialize curinterp */
1969STATIC void
cea2e8a9 1970S_init_interp(pTHX)
cb68f92d
GS		 1971{
1972
066ef5b5 1973#ifdef PERL_OBJECT /* XXX kludge */
cb68f92d 1974#define I_REINIT \
6b88bc9c
GS		 1975 STMT_START { \
1976 PL_chopset = " \n-"; \
1977 PL_copline = NOLINE; \
1978 PL_curcop = &PL_compiling;\
1979 PL_curcopdb = NULL; \
1980 PL_dbargs = 0; \
3967c732 1981 PL_dumpindent = 4; \
6b88bc9c
GS		 1982 PL_laststatval = -1; \
1983 PL_laststype = OP_STAT; \
1984 PL_maxscream = -1; \
1985 PL_maxsysfd = MAXSYSFD; \
1986 PL_statname = Nullsv; \
1987 PL_tmps_floor = -1; \
1988 PL_tmps_ix = -1; \
1989 PL_op_mask = NULL; \
6b88bc9c
GS		 1990 PL_laststatval = -1; \
1991 PL_laststype = OP_STAT; \
1992 PL_mess_sv = Nullsv; \
1993 PL_splitstr = " "; \
1994 PL_generation = 100; \
1995 PL_exitlist = NULL; \
1996 PL_exitlistlen = 0; \
1997 PL_regindent = 0; \
1998 PL_in_clean_objs = FALSE; \
1999 PL_in_clean_all = FALSE; \
2000 PL_profiledata = NULL; \
2001 PL_rsfp = Nullfp; \
2002 PL_rsfp_filters = Nullav; \
24d3c518 2003 PL_dirty = FALSE; \
cb68f92d 2004 } STMT_END
9666903d 2005 I_REINIT;
066ef5b5
GS		 2006#else
2007# ifdef MULTIPLICITY
2008# define PERLVAR(var,type)
51371543 2009# define PERLVARA(var,n,type)
cea2e8a9 2010# if defined(PERL_IMPLICIT_CONTEXT)
54aff467
GS		 2011# if defined(USE_THREADS)
2012# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2013# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2014# else /* !USE_THREADS */
2015# define PERLVARI(var,type,init) aTHX->var = init;
2016# define PERLVARIC(var,type,init) aTHX->var = init;
2017# endif /* USE_THREADS */
cea2e8a9 2018# else
c5be433b
GS		 2019# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2020# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
cea2e8a9 2021# endif
066ef5b5
GS		 2022# include "intrpvar.h"
2023# ifndef USE_THREADS
2024# include "thrdvar.h"
2025# endif
2026# undef PERLVAR
51371543 2027# undef PERLVARA
066ef5b5
GS		 2028# undef PERLVARI
2029# undef PERLVARIC
3967c732 2030# else
066ef5b5 2031# define PERLVAR(var,type)
51371543 2032# define PERLVARA(var,n,type)
533c011a
NIS		 2033# define PERLVARI(var,type,init) PL_##var = init;
2034# define PERLVARIC(var,type,init) PL_##var = init;
066ef5b5
GS		 2035# include "intrpvar.h"
2036# ifndef USE_THREADS
2037# include "thrdvar.h"
2038# endif
2039# undef PERLVAR
51371543 2040# undef PERLVARA
066ef5b5
GS		 2041# undef PERLVARI
2042# undef PERLVARIC
2043# endif
cb68f92d
GS		 2044#endif
2045
cb68f92d
GS		 2046}
2047
76e3520e 2048STATIC void
cea2e8a9 2049S_init_main_stash(pTHX)
79072805 2050{
11343788 2051 dTHR;
463ee0b2 2052 GV *gv;
6e72f9df 2053
2054 /* Note that strtab is a rather special HV. Assumptions are made
2055 about not iterating on it, and not adding tie magic to it.
2056 It is properly deallocated in perl_destruct() */
3280af22 2057 PL_strtab = newHV();
5f08fbcd
GS		 2058#ifdef USE_THREADS
2059 MUTEX_INIT(&PL_strtab_mutex);
2060#endif
3280af22
NIS		 2061 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2062 hv_ksplit(PL_strtab, 512);
6e72f9df 2063
3280af22 2064 PL_curstash = PL_defstash = newHV();
79cb57f6 2065 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2066 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2067 SvREFCNT_dec(GvHV(gv));
3280af22 2068 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2069 SvREADONLY_on(gv);
3280af22
NIS		 2070 HvNAME(PL_defstash) = savepv("main");
2071 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2072 GvMULTI_on(PL_incgv);
2073 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2074 GvMULTI_on(PL_hintgv);
2075 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2076 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2077 GvMULTI_on(PL_errgv);
2078 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2079 GvMULTI_on(PL_replgv);
cea2e8a9 2080 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2081 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2082 sv_setpvn(ERRSV, "", 0);
3280af22
NIS		 2083 PL_curstash = PL_defstash;
2084 PL_compiling.cop_stash = PL_defstash;
3280af22 2085 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2086 /* We must init $/ before switches are processed. */
864dbfa3 2087 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2088}
2089
76e3520e 2090STATIC void
cea2e8a9 2091S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2092{
0f15f207 2093 dTHR;
79072805 2094 register char *s;
2a92aaa0 2095
6c4ab083 2096 *fdscript = -1;
79072805 2097
3280af22
NIS		 2098 if (PL_e_script) {
2099 PL_origfilename = savepv("-e");
96436eeb 2100 }
6c4ab083
GS		 2101 else {
2102 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2103 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2104
2105 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2106 char *s = scriptname + 8;
2107 *fdscript = atoi(s);
2108 while (isDIGIT(*s))
2109 s++;
2110 if (*s) {
2111 scriptname = savepv(s + 1);
3280af22
NIS		 2112 Safefree(PL_origfilename);
2113 PL_origfilename = scriptname;
6c4ab083
GS		 2114 }
2115 }
2116 }
2117
cc49e20b 2118 CopFILEGV_set(PL_curcop, gv_fetchfile(PL_origfilename));
3280af22 2119 if (strEQ(PL_origfilename,"-"))
79072805 2120 scriptname = "";
01f988be 2121 if (*fdscript >= 0) {
3280af22 2122 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
96436eeb 2123#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2124 if (PL_rsfp)
2125 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2126#endif
2127 }
3280af22 2128 else if (PL_preprocess) {
46fc3d4c 2129 char *cpp_cfg = CPPSTDIN;
79cb57f6 2130 SV *cpp = newSVpvn("",0);
46fc3d4c 2131 SV *cmd = NEWSV(0,0);
2132
2133 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2134 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2135 sv_catpv(cpp, cpp_cfg);
79072805 2136
79072805 2137 sv_catpv(sv,"-I");
fed7345c 2138 sv_catpv(sv,PRIVLIB_EXP);
46fc3d4c 2139
79072805 2140#ifdef MSDOS
cea2e8a9 2141 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2142sed %s -e \"/^[^#]/b\" \
2143 -e \"/^#[ ]*include[ ]/b\" \
2144 -e \"/^#[ ]*define[ ]/b\" \
2145 -e \"/^#[ ]*if[ ]/b\" \
2146 -e \"/^#[ ]*ifdef[ ]/b\" \
2147 -e \"/^#[ ]*ifndef[ ]/b\" \
2148 -e \"/^#[ ]*else/b\" \
2149 -e \"/^#[ ]*elif[ ]/b\" \
2150 -e \"/^#[ ]*undef[ ]/b\" \
2151 -e \"/^#[ ]*endif/b\" \
2152 -e \"s/^#.*//\" \
fc36a67e 2153 %s | %_ -C %_ %s",
6b88bc9c 2154 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
79072805 2155#else
092bebab 2156# ifdef __OPEN_VM
cea2e8a9 2157 Perl_sv_setpvf(aTHX_ cmd, "\
092bebab
JH		 2158%s %s -e '/^[^#]/b' \
2159 -e '/^#[ ]*include[ ]/b' \
2160 -e '/^#[ ]*define[ ]/b' \
2161 -e '/^#[ ]*if[ ]/b' \
2162 -e '/^#[ ]*ifdef[ ]/b' \
2163 -e '/^#[ ]*ifndef[ ]/b' \
2164 -e '/^#[ ]*else/b' \
2165 -e '/^#[ ]*elif[ ]/b' \
2166 -e '/^#[ ]*undef[ ]/b' \
2167 -e '/^#[ ]*endif/b' \
2168 -e 's/^[ ]*#.*//' \
2169 %s | %_ %_ %s",
2170# else
cea2e8a9 2171 Perl_sv_setpvf(aTHX_ cmd, "\
79072805
LW		 2172%s %s -e '/^[^#]/b' \
2173 -e '/^#[ ]*include[ ]/b' \
2174 -e '/^#[ ]*define[ ]/b' \
2175 -e '/^#[ ]*if[ ]/b' \
2176 -e '/^#[ ]*ifdef[ ]/b' \
2177 -e '/^#[ ]*ifndef[ ]/b' \
2178 -e '/^#[ ]*else/b' \
2179 -e '/^#[ ]*elif[ ]/b' \
2180 -e '/^#[ ]*undef[ ]/b' \
2181 -e '/^#[ ]*endif/b' \
2182 -e 's/^[ ]*#.*//' \
fc36a67e 2183 %s | %_ -C %_ %s",
092bebab 2184# endif
79072805
LW		 2185#ifdef LOC_SED
2186 LOC_SED,
2187#else
2188 "sed",
2189#endif
3280af22 2190 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
79072805 2191#endif
46fc3d4c 2192 scriptname, cpp, sv, CPPMINUS);
3280af22 2193 PL_doextract = FALSE;
79072805 2194#ifdef IAMSUID /* actually, this is caught earlier */
b28d0864 2195 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
79072805 2196#ifdef HAS_SETEUID
b28d0864 2197 (void)seteuid(PL_uid); /* musn't stay setuid root */
79072805
LW		 2198#else
2199#ifdef HAS_SETREUID
b28d0864 2200 (void)setreuid((Uid_t)-1, PL_uid);
85e6fe83
LW		 2201#else
2202#ifdef HAS_SETRESUID
b28d0864 2203 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
79072805 2204#else
b28d0864 2205 PerlProc_setuid(PL_uid);
79072805
LW		 2206#endif
2207#endif
85e6fe83 2208#endif
b28d0864 2209 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2210 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805
LW		 2211 }
2212#endif /* IAMSUID */
3280af22 2213 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2214 SvREFCNT_dec(cmd);
2215 SvREFCNT_dec(cpp);
79072805
LW		 2216 }
2217 else if (!*scriptname) {
bbce6d69 2218 forbid_setid("program input from stdin");
3280af22 2219 PL_rsfp = PerlIO_stdin();
79072805 2220 }
96436eeb 2221 else {
3280af22 2222 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
96436eeb 2223#if defined(HAS_FCNTL) && defined(F_SETFD)
3280af22
NIS		 2224 if (PL_rsfp)
2225 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
96436eeb 2226#endif
2227 }
3280af22 2228 if (!PL_rsfp) {
13281fa4 2229#ifdef DOSUID
a687059c 2230#ifndef IAMSUID /* in case script is not readable before setuid */
6b88bc9c 2231 if (PL_euid &&
cc49e20b 2232 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
6b88bc9c
GS		 2233 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2234 {
46fc3d4c 2235 /* try again */
cea2e8a9
GS		 2236 PerlProc_execv(Perl_form(aTHX_ "%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
2237 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2238 }
2239#endif
2240#endif
cea2e8a9 2241 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
cc49e20b 2242 CopFILE(PL_curcop), Strerror(errno));
13281fa4 2243 }
79072805 2244}
8d063cd8 2245
7b89560d
JH		 2246/* Mention
2247 * I_SYSSTATVFS HAS_FSTATVFS
2248 * I_SYSMOUNT
2249 * I_STATFS HAS_FSTATFS
2250 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2251 * here so that metaconfig picks them up. */
2252
104d25b7 2253#ifdef IAMSUID
864dbfa3 2254STATIC int
e688b231 2255S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2256{
0545a864
JH		 2257 int check_okay = 0; /* able to do all the required sys/libcalls */
2258 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2259/*
ad27e871 2260 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2261 * fstatvfs() is UNIX98.
0545a864 2262 * fstatfs() is 4.3 BSD.
ad27e871 2263 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2264 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2265 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2266 */
2267
2268# ifdef HAS_FSTATVFS
2269 struct statvfs stfs;
2270 check_okay = fstatvfs(fd, &stfs) == 0;
2271 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2272# else
0545a864 2273# ifdef PERL_MOUNT_NOSUID
ad27e871
JH		 2274# if defined(HAS_FSTATFS) && \
2275 defined(HAS_STRUCT_STATFS) && \
2276 defined(HAS_STRUCT_STATFS_F_FLAGS)
e688b231 2277 struct statfs stfs;
104d25b7 2278 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2279 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
0545a864
JH		 2280# else
2281# if defined(HAS_FSTAT) && \
2282 defined(HAS_USTAT) && \
ad27e871
JH		 2283 defined(HAS_GETMNT) && \
2284 defined(HAS_STRUCT_FS_DATA) &&
2285 defined(NOSTAT_ONE)
0545a864
JH		 2286 struct stat fdst;
2287 if (fstat(fd, &fdst) == 0) {
2288 struct ustat us;
2289 if (ustat(fdst.st_dev, &us) == 0) {
2290 struct fs_data fsd;
ad27e871
JH		 2291 /* NOSTAT_ONE here because we're not examining fields which
2292 * vary between that case and STAT_ONE. */
2293 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
0545a864
JH		 2294 size_t cmplen = sizeof(us.f_fname);
2295 if (sizeof(fsd.fd_req.path) < cmplen)
2296 cmplen = sizeof(fsd.fd_req.path);
2297 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2298 fdst.st_dev == fsd.fd_req.dev) {
2299 check_okay = 1;
2300 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2301 }
2302 }
2303 }
2304 }
2305 }
ad27e871
JH		 2306# endif /* fstat+ustat+getmnt */
2307# endif /* fstatfs */
104d25b7 2308# else
0545a864
JH		 2309# if defined(HAS_GETMNTENT) && \
2310 defined(HAS_HASMNTOPT) && \
2311 defined(MNTOPT_NOSUID)
104d25b7
JH		 2312 FILE *mtab = fopen("/etc/mtab", "r");
2313 struct mntent *entry;
2314 struct stat stb, fsb;
2315
2316 if (mtab && (fstat(fd, &stb) == 0)) {
e688b231
JH		 2317 while (entry = getmntent(mtab)) {
2318 if (stat(entry->mnt_dir, &fsb) == 0
2319 && fsb.st_dev == stb.st_dev)
104d25b7
JH		 2320 {
2321 /* found the filesystem */
2322 check_okay = 1;
2323 if (hasmntopt(entry, MNTOPT_NOSUID))
2324 on_nosuid = 1;
2325 break;
e688b231 2326 } /* A single fs may well fail its stat(). */
104d25b7
JH		 2327 }
2328 }
2329 if (mtab)
2330 fclose(mtab);
ad27e871 2331# endif /* getmntent+hasmntopt */
0545a864 2332# endif /* PERL_MOUNT_NOSUID: fstatfs or fstat+ustat+statfs */
e688b231 2333# endif /* statvfs */
0545a864 2334
104d25b7 2335 if (!check_okay)
0545a864 2336 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2337 return on_nosuid;
2338}
2339#endif /* IAMSUID */
2340
76e3520e 2341STATIC void
cea2e8a9 2342S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2343{
96436eeb 2344 int which;
2345
13281fa4
LW		 2346 /* do we need to emulate setuid on scripts? */
2347
2348 /* This code is for those BSD systems that have setuid #! scripts disabled
2349 * in the kernel because of a security problem. Merely defining DOSUID
2350 * in perl will not fix that problem, but if you have disabled setuid
2351 * scripts in the kernel, this will attempt to emulate setuid and setgid
2352 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2353 * root version must be called suidperl or sperlN.NNN. If regular perl
2354 * discovers that it has opened a setuid script, it calls suidperl with
2355 * the same argv that it had. If suidperl finds that the script it has
2356 * just opened is NOT setuid root, it sets the effective uid back to the
2357 * uid. We don't just make perl setuid root because that loses the
2358 * effective uid we had before invoking perl, if it was different from the
2359 * uid.
13281fa4
LW		 2360 *
2361 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2362 * be defined in suidperl only. suidperl must be setuid root. The
2363 * Configure script will set this up for you if you want it.
2364 */
a687059c 2365
13281fa4 2366#ifdef DOSUID
ea0efc06 2367 dTHR;
6e72f9df 2368 char *s, *s2;
a0d0e21e 2369
b28d0864 2370 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2371 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2372 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2373 I32 len;
2d8e6c8d 2374 STRLEN n_a;
13281fa4 2375
a687059c 2376#ifdef IAMSUID
fe14fcc3 2377#ifndef HAS_SETREUID
a687059c
LW		 2378 /* On this access check to make sure the directories are readable,
2379 * there is actually a small window that the user could use to make
2380 * filename point to an accessible directory. So there is a faint
2381 * chance that someone could execute a setuid script down in a
2382 * non-accessible directory. I don't know what to do about that.
2383 * But I don't think it's too important. The manual lies when
2384 * it says access() is useful in setuid programs.
2385 */
cc49e20b 2386 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2387 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2388#else
2389 /* If we can swap euid and uid, then we can determine access rights
2390 * with a simple stat of the file, and then compare device and
2391 * inode to make sure we did stat() on the same file we opened.
2392 * Then we just have to make sure he or she can execute it.
2393 */
2394 {
2395 struct stat tmpstatbuf;
2396
85e6fe83
LW		 2397 if (
2398#ifdef HAS_SETREUID
b28d0864 2399 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 2400#else
2401# if HAS_SETRESUID
b28d0864 2402 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 2403# endif
85e6fe83 2404#endif
b28d0864 2405 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 2406 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 2407 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 2408 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 2409#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 2410 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 2411 Perl_croak(aTHX_ "Permission denied");
104d25b7 2412#endif
b28d0864
NIS		 2413 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2414 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2415 (void)PerlIO_close(PL_rsfp);
2416 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2417 PerlIO_printf(PL_rsfp,
785fb66b
JH		 2418"User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2419(Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2420 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
b28d0864 2421 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
cc49e20b 2422 CopFILE(PL_curcop),
785fb66b 2423 PL_statbuf.st_uid, PL_statbuf.st_gid);
b28d0864 2424 (void)PerlProc_pclose(PL_rsfp);
a687059c 2425 }
cea2e8a9 2426 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2427 }
85e6fe83
LW		 2428 if (
2429#ifdef HAS_SETREUID
b28d0864 2430 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 2431#else
2432# if defined(HAS_SETRESUID)
b28d0864 2433 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 2434# endif
85e6fe83 2435#endif
b28d0864 2436 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 2437 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 2438 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 2439 Perl_croak(aTHX_ "Permission denied\n");
a687059c 2440 }
fe14fcc3 2441#endif /* HAS_SETREUID */
a687059c
LW		 2442#endif /* IAMSUID */
2443
b28d0864 2444 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 2445 Perl_croak(aTHX_ "Permission denied");
b28d0864 2446 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 2447 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c
GS		 2448 PL_doswitches = FALSE; /* -s is insecure in suid */
2449 PL_curcop->cop_line++;
2450 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 2451 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 2452 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 2453 s = SvPV(PL_linestr,n_a)+2;
663a0e37 2454 if (*s == ' ') s++;
45d8adaa 2455 while (!isSPACE(*s)) s++;
2d8e6c8d 2456 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 2457 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2458 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 2459 Perl_croak(aTHX_ "Not a perl script");
a687059c 2460 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 2461 /*
2462 * #! arg must be what we saw above. They can invoke it by
2463 * mentioning suidperl explicitly, but they may not add any strange
2464 * arguments beyond what #! says if they do invoke suidperl that way.
2465 */
2466 len = strlen(validarg);
2467 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 2468 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 2469 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 2470
2471#ifndef IAMSUID
b28d0864
NIS		 2472 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2473 PL_euid == PL_statbuf.st_uid)
2474 if (!PL_do_undump)
cea2e8a9 2475 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 2476FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2477#endif /* IAMSUID */
13281fa4 2478
b28d0864
NIS		 2479 if (PL_euid) { /* oops, we're not the setuid root perl */
2480 (void)PerlIO_close(PL_rsfp);
13281fa4 2481#ifndef IAMSUID
46fc3d4c 2482 /* try again */
cea2e8a9 2483 PerlProc_execv(Perl_form(aTHX_ "%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv);
13281fa4 2484#endif
cea2e8a9 2485 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 2486 }
2487
b28d0864 2488 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 2489#ifdef HAS_SETEGID
b28d0864 2490 (void)setegid(PL_statbuf.st_gid);
a687059c 2491#else
fe14fcc3 2492#ifdef HAS_SETREGID
b28d0864 2493 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 2494#else
2495#ifdef HAS_SETRESGID
b28d0864 2496 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 2497#else
b28d0864 2498 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 2499#endif
2500#endif
85e6fe83 2501#endif
b28d0864 2502 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 2503 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 2504 }
b28d0864
NIS		 2505 if (PL_statbuf.st_mode & S_ISUID) {
2506 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 2507#ifdef HAS_SETEUID
b28d0864 2508 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 2509#else
fe14fcc3 2510#ifdef HAS_SETREUID
b28d0864 2511 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 2512#else
2513#ifdef HAS_SETRESUID
b28d0864 2514 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 2515#else
b28d0864 2516 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 2517#endif
2518#endif
85e6fe83 2519#endif
b28d0864 2520 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 2521 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 2522 }
b28d0864 2523 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 2524#ifdef HAS_SETEUID
b28d0864 2525 (void)seteuid((Uid_t)PL_uid);
a687059c 2526#else
fe14fcc3 2527#ifdef HAS_SETREUID
b28d0864 2528 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 2529#else
85e6fe83 2530#ifdef HAS_SETRESUID
b28d0864 2531 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 2532#else
b28d0864 2533 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 2534#endif
a687059c
LW		 2535#endif
2536#endif
b28d0864 2537 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2538 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 2539 }
748a9306 2540 init_ids();
b28d0864 2541 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 2542 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 2543 }
2544#ifdef IAMSUID
6b88bc9c 2545 else if (PL_preprocess)
cea2e8a9 2546 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 2547 else if (fdscript >= 0)
cea2e8a9 2548 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 2549 else
cea2e8a9 2550 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 2551
2552 /* We absolutely must clear out any saved ids here, so we */
2553 /* exec the real perl, substituting fd script for scriptname. */
2554 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 2555 PerlIO_rewind(PL_rsfp);
2556 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 2557 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2558 if (!PL_origargv[which])
cea2e8a9
GS		 2559 Perl_croak(aTHX_ "Permission denied");
2560 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 2561 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 2562#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 2563 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 2564#endif
cea2e8a9
GS		 2565 PerlProc_execv(Perl_form(aTHX_ "%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */
2566 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 2567#endif /* IAMSUID */
a687059c 2568#else /* !DOSUID */
3280af22 2569 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 2570#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
96827780 2571 dTHR;
b28d0864
NIS		 2572 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2573 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 2574 ||
b28d0864 2575 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 2576 )
b28d0864 2577 if (!PL_do_undump)
cea2e8a9 2578 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 2579FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2580#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2581 /* not set-id, must be wrapped */
a687059c 2582 }
13281fa4 2583#endif /* DOSUID */
79072805 2584}
13281fa4 2585
76e3520e 2586STATIC void
cea2e8a9 2587S_find_beginning(pTHX)
79072805 2588{
6e72f9df 2589 register char *s, *s2;
33b78306
LW		 2590
2591 /* skip forward in input to the real script? */
2592
bbce6d69 2593 forbid_setid("-x");
3280af22
NIS		 2594 while (PL_doextract) {
2595 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 2596 Perl_croak(aTHX_ "No Perl script found in input\n");
6e72f9df 2597 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3280af22
NIS		 2598 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2599 PL_doextract = FALSE;
6e72f9df 2600 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2601 s2 = s;
2602 while (*s == ' ' || *s == '\t') s++;
2603 if (*s++ == '-') {
2604 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2605 if (strnEQ(s2-4,"perl",4))
2606 /*SUPPRESS 530*/
2607 while (s = moreswitches(s)) ;
33b78306 2608 }
83025b21
LW		 2609 }
2610 }
2611}
2612
afe37c7d 2613
76e3520e 2614STATIC void
cea2e8a9 2615S_init_ids(pTHX)
352d5a3a 2616{
d8eceb89
JH		 2617 PL_uid = PerlProc_getuid();
2618 PL_euid = PerlProc_geteuid();
2619 PL_gid = PerlProc_getgid();
2620 PL_egid = PerlProc_getegid();
748a9306 2621#ifdef VMS
b28d0864
NIS		 2622 PL_uid |= PL_gid << 16;
2623 PL_euid |= PL_egid << 16;
748a9306 2624#endif
3280af22 2625 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 2626}
79072805 2627
76e3520e 2628STATIC void
cea2e8a9 2629S_forbid_setid(pTHX_ char *s)
bbce6d69 2630{
3280af22 2631 if (PL_euid != PL_uid)
cea2e8a9 2632 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 2633 if (PL_egid != PL_gid)
cea2e8a9 2634 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 2635}
2636
1ee4443e
IZ		 2637void
2638Perl_init_debugger(pTHX)
748a9306 2639{
11343788 2640 dTHR;
1ee4443e
IZ		 2641 HV *ostash = PL_curstash;
2642
5c831c24 2643 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22
NIS		 2644 PL_curstash = PL_debstash;
2645 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2646 AvREAL_off(PL_dbargs);
2647 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2648 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2649 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 2650 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22
NIS		 2651 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2652 sv_setiv(PL_DBsingle, 0);
2653 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2654 sv_setiv(PL_DBtrace, 0);
2655 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2656 sv_setiv(PL_DBsignal, 0);
1ee4443e 2657 PL_curstash = ostash;
352d5a3a
LW		 2658}
2659
2ce36478
SM		 2660#ifndef STRESS_REALLOC
2661#define REASONABLE(size) (size)
2662#else
2663#define REASONABLE(size) (1) /* unreasonable */
2664#endif
2665
11343788 2666void
cea2e8a9 2667Perl_init_stacks(pTHX)
79072805 2668{
e336de0d 2669 /* start with 128-item stack and 8K cxstack */
3280af22 2670 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 2671 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 2672 PL_curstackinfo->si_type = PERLSI_MAIN;
2673 PL_curstack = PL_curstackinfo->si_stack;
2674 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 2675
3280af22
NIS		 2676 PL_stack_base = AvARRAY(PL_curstack);
2677 PL_stack_sp = PL_stack_base;
2678 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 2679
3280af22
NIS		 2680 New(50,PL_tmps_stack,REASONABLE(128),SV*);
2681 PL_tmps_floor = -1;
2682 PL_tmps_ix = -1;
2683 PL_tmps_max = REASONABLE(128);
8990e307 2684
3280af22
NIS		 2685 New(54,PL_markstack,REASONABLE(32),I32);
2686 PL_markstack_ptr = PL_markstack;
2687 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 2688
e336de0d
GS		 2689 SET_MARKBASE;
2690
3280af22
NIS		 2691 New(54,PL_scopestack,REASONABLE(32),I32);
2692 PL_scopestack_ix = 0;
2693 PL_scopestack_max = REASONABLE(32);
79072805 2694
3280af22
NIS		 2695 New(54,PL_savestack,REASONABLE(128),ANY);
2696 PL_savestack_ix = 0;
2697 PL_savestack_max = REASONABLE(128);
79072805 2698
3280af22
NIS		 2699 New(54,PL_retstack,REASONABLE(16),OP*);
2700 PL_retstack_ix = 0;
2701 PL_retstack_max = REASONABLE(16);
378cc40b 2702}
33b78306 2703
2ce36478
SM		 2704#undef REASONABLE
2705
76e3520e 2706STATIC void
cea2e8a9 2707S_nuke_stacks(pTHX)
6e72f9df 2708{
e858de61 2709 dTHR;
3280af22
NIS		 2710 while (PL_curstackinfo->si_next)
2711 PL_curstackinfo = PL_curstackinfo->si_next;
2712 while (PL_curstackinfo) {
2713 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 2714 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 2715 Safefree(PL_curstackinfo->si_cxstack);
2716 Safefree(PL_curstackinfo);
2717 PL_curstackinfo = p;
e336de0d 2718 }
3280af22
NIS		 2719 Safefree(PL_tmps_stack);
2720 Safefree(PL_markstack);
2721 Safefree(PL_scopestack);
2722 Safefree(PL_savestack);
2723 Safefree(PL_retstack);
378cc40b 2724}
33b78306 2725
76e3520e 2726#ifndef PERL_OBJECT
760ac839 2727static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
76e3520e 2728#endif
7aa04957 2729
76e3520e 2730STATIC void
cea2e8a9 2731S_init_lexer(pTHX)
8990e307 2732{
76e3520e
GS		 2733#ifdef PERL_OBJECT
2734 PerlIO *tmpfp;
2735#endif
3280af22
NIS		 2736 tmpfp = PL_rsfp;
2737 PL_rsfp = Nullfp;
2738 lex_start(PL_linestr);
2739 PL_rsfp = tmpfp;
79cb57f6 2740 PL_subname = newSVpvn("main",4);
8990e307
LW		 2741}
2742
76e3520e 2743STATIC void
cea2e8a9 2744S_init_predump_symbols(pTHX)
45d8adaa 2745{
11343788 2746 dTHR;
93a17b20 2747 GV *tmpgv;
a0d0e21e 2748 GV *othergv;
af8c498a 2749 IO *io;
79072805 2750
864dbfa3 2751 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 2752 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2753 GvMULTI_on(PL_stdingv);
af8c498a
GS		 2754 io = GvIOp(PL_stdingv);
2755 IoIFP(io) = PerlIO_stdin();
adbc6bb1 2756 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 2757 GvMULTI_on(tmpgv);
af8c498a 2758 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 2759
85e6fe83 2760 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 2761 GvMULTI_on(tmpgv);
af8c498a
GS		 2762 io = GvIOp(tmpgv);
2763 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 2764 setdefout(tmpgv);
adbc6bb1 2765 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 2766 GvMULTI_on(tmpgv);
af8c498a 2767 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 2768
bf49b057
GS		 2769 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2770 GvMULTI_on(PL_stderrgv);
2771 io = GvIOp(PL_stderrgv);
af8c498a 2772 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 2773 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 2774 GvMULTI_on(tmpgv);
af8c498a 2775 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 2776
3280af22 2777 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 2778
3280af22
NIS		 2779 if (!PL_osname)
2780 PL_osname = savepv(OSNAME);
79072805 2781}
33b78306 2782
76e3520e 2783STATIC void
cea2e8a9 2784S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
33b78306 2785{
a863c7d1 2786 dTHR;
79072805
LW		 2787 char *s;
2788 SV *sv;
2789 GV* tmpgv;
fe14fcc3 2790
79072805 2791 argc--,argv++; /* skip name of script */
3280af22 2792 if (PL_doswitches) {
79072805
LW		 2793 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2794 if (!argv[0][1])
2795 break;
2796 if (argv[0][1] == '-') {
2797 argc--,argv++;
2798 break;
2799 }
93a17b20 2800 if (s = strchr(argv[0], '=')) {
79072805 2801 *s++ = '\0';
85e6fe83 2802 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 2803 }
2804 else
85e6fe83 2805 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 2806 }
79072805 2807 }
3280af22
NIS		 2808 PL_toptarget = NEWSV(0,0);
2809 sv_upgrade(PL_toptarget, SVt_PVFM);
2810 sv_setpvn(PL_toptarget, "", 0);
2811 PL_bodytarget = NEWSV(0,0);
2812 sv_upgrade(PL_bodytarget, SVt_PVFM);
2813 sv_setpvn(PL_bodytarget, "", 0);
2814 PL_formtarget = PL_bodytarget;
79072805 2815
bbce6d69 2816 TAINT;
85e6fe83 2817 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
3280af22 2818 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805
LW		 2819 magicname("0", "0", 1);
2820 }
85e6fe83 2821 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
ed344e4f
IZ		 2822#ifdef OS2
2823 sv_setpv(GvSV(tmpgv), os2_execname());
2824#else
3280af22 2825 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
ed344e4f 2826#endif
3280af22
NIS		 2827 if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2828 GvMULTI_on(PL_argvgv);
2829 (void)gv_AVadd(PL_argvgv);
2830 av_clear(GvAVn(PL_argvgv));
79072805 2831 for (; argc > 0; argc--,argv++) {
3280af22 2832 av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0));
79072805
LW		 2833 }
2834 }
3280af22 2835 if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
79072805 2836 HV *hv;
3280af22
NIS		 2837 GvMULTI_on(PL_envgv);
2838 hv = GvHVn(PL_envgv);
2839 hv_magic(hv, PL_envgv, 'E');
4d2c4e07 2840#if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
4633a7c4
LW		 2841 /* Note that if the supplied env parameter is actually a copy
2842 of the global environ then it may now point to free'd memory
2843 if the environment has been modified since. To avoid this
2844 problem we treat env==NULL as meaning 'use the default'
2845 */
2846 if (!env)
2847 env = environ;
5aabfad6 2848 if (env != environ)
79072805
LW		 2849 environ[0] = Nullch;
2850 for (; *env; env++) {
93a17b20 2851 if (!(s = strchr(*env,'=')))
79072805
LW		 2852 continue;
2853 *s++ = '\0';
60ce6247 2854#if defined(MSDOS)
137443ea 2855 (void)strupr(*env);
2856#endif
79072805
LW		 2857 sv = newSVpv(s--,0);
2858 (void)hv_store(hv, *env, s - *env, sv, 0);
2859 *s = '=';
3e3baf6d
TB		 2860#if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2861 /* Sins of the RTL. See note in my_setenv(). */
76e3520e 2862 (void)PerlEnv_putenv(savepv(*env));
3e3baf6d 2863#endif
fe14fcc3 2864 }
4550b24a 2865#endif
2866#ifdef DYNAMIC_ENV_FETCH
2867 HvNAME(hv) = savepv(ENV_HV_NAME);
2868#endif
79072805 2869 }
bbce6d69 2870 TAINT_NOT;
85e6fe83 2871 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 2872 sv_setiv(GvSV(tmpgv), (IV)getpid());
33b78306 2873}
34de22dd 2874
76e3520e 2875STATIC void
cea2e8a9 2876S_init_perllib(pTHX)
34de22dd 2877{
85e6fe83 2878 char *s;
3280af22 2879 if (!PL_tainting) {
552a7a9b 2880#ifndef VMS
76e3520e 2881 s = PerlEnv_getenv("PERL5LIB");
85e6fe83 2882 if (s)
774d564b 2883 incpush(s, TRUE);
85e6fe83 2884 else
76e3520e 2885 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
552a7a9b 2886#else /* VMS */
2887 /* Treat PERL5?LIB as a possible search list logical name -- the
2888 * "natural" VMS idiom for a Unix path string. We allow each
2889 * element to be a set of |-separated directories for compatibility.
2890 */
2891 char buf[256];
2892 int idx = 0;
2893 if (my_trnlnm("PERL5LIB",buf,0))
774d564b 2894 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
552a7a9b 2895 else
774d564b 2896 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
552a7a9b 2897#endif /* VMS */
85e6fe83 2898 }
34de22dd 2899
c90c0ff4 2900/* Use the ~-expanded versions of APPLLIB (undocumented),
dfe9444c 2901 ARCHLIB PRIVLIB SITEARCH and SITELIB
df5cef82 2902*/
4633a7c4 2903#ifdef APPLLIB_EXP
43051805 2904 incpush(APPLLIB_EXP, TRUE);
16d20bd9 2905#endif
4633a7c4 2906
fed7345c 2907#ifdef ARCHLIB_EXP
774d564b 2908 incpush(ARCHLIB_EXP, FALSE);
a0d0e21e 2909#endif
fed7345c
AD		 2910#ifndef PRIVLIB_EXP
2911#define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
34de22dd 2912#endif
00dc2f4f
GS		 2913#if defined(WIN32)
2914 incpush(PRIVLIB_EXP, TRUE);
2915#else
774d564b 2916 incpush(PRIVLIB_EXP, FALSE);
00dc2f4f 2917#endif
4633a7c4
LW		 2918
2919#ifdef SITEARCH_EXP
774d564b 2920 incpush(SITEARCH_EXP, FALSE);
4633a7c4
LW		 2921#endif
2922#ifdef SITELIB_EXP
00dc2f4f
GS		 2923#if defined(WIN32)
2924 incpush(SITELIB_EXP, TRUE);
2925#else
774d564b 2926 incpush(SITELIB_EXP, FALSE);
4633a7c4 2927#endif
81c6dfba 2928#endif
a3635516
JH		 2929#if defined(PERL_VENDORLIB_EXP)
2930#if defined(WIN32)
265f5c4a 2931 incpush(PERL_VENDORLIB_EXP, TRUE);
a3635516
JH		 2932#else
2933 incpush(PERL_VENDORLIB_EXP, FALSE);
2934#endif
00dc2f4f 2935#endif
3280af22 2936 if (!PL_tainting)
774d564b 2937 incpush(".", FALSE);
2938}
2939
2940#if defined(DOSISH)
2941# define PERLLIB_SEP ';'
2942#else
2943# if defined(VMS)
2944# define PERLLIB_SEP '|'
2945# else
2946# define PERLLIB_SEP ':'
2947# endif
2948#endif
2949#ifndef PERLLIB_MANGLE
2950# define PERLLIB_MANGLE(s,n) (s)
2951#endif
2952
76e3520e 2953STATIC void
cea2e8a9 2954S_incpush(pTHX_ char *p, int addsubdirs)
774d564b 2955{
2956 SV *subdir = Nullsv;
774d564b 2957
2958 if (!p)
2959 return;
2960
2961 if (addsubdirs) {
00db4c45 2962 subdir = sv_newmortal();
3280af22
NIS		 2963 if (!PL_archpat_auto) {
2964 STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel)
774d564b 2965 + sizeof("//auto"));
3280af22
NIS		 2966 New(55, PL_archpat_auto, len, char);
2967 sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel);
aa689395 2968#ifdef VMS
2969 for (len = sizeof(ARCHNAME) + 2;
6b88bc9c
GS		 2970 PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++)
2971 if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_';
aa689395 2972#endif
774d564b 2973 }
2974 }
2975
2976 /* Break at all separators */
2977 while (p && *p) {
8c52afec 2978 SV *libdir = NEWSV(55,0);
774d564b 2979 char *s;
2980
2981 /* skip any consecutive separators */
2982 while ( *p == PERLLIB_SEP ) {
2983 /* Uncomment the next line for PATH semantics */
79cb57f6 2984 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
774d564b 2985 p++;
2986 }
2987
2988 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2989 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2990 (STRLEN)(s - p));
2991 p = s + 1;
2992 }
2993 else {
2994 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2995 p = Nullch; /* break out */
2996 }
2997
2998 /*
2999 * BEFORE pushing libdir onto @INC we may first push version- and
3000 * archname-specific sub-directories.
3001 */
3002 if (addsubdirs) {
3003 struct stat tmpstatbuf;
aa689395 3004#ifdef VMS
3005 char *unix;
3006 STRLEN len;
774d564b 3007
2d8e6c8d 3008 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
aa689395 3009 len = strlen(unix);
3010 while (unix[len-1] == '/') len--; /* Cosmetic */
3011 sv_usepvn(libdir,unix,len);
3012 }
3013 else
bf49b057 3014 PerlIO_printf(Perl_error_log,
aa689395 3015 "Failed to unixify @INC element \"%s\"\n",
2d8e6c8d 3016 SvPV(libdir,len));
aa689395 3017#endif
4fdae800 3018 /* .../archname/version if -d .../archname/version/auto */
774d564b 3019 sv_setsv(subdir, libdir);
3280af22 3020 sv_catpv(subdir, PL_archpat_auto);
76e3520e 3021 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
774d564b 3022 S_ISDIR(tmpstatbuf.st_mode))
3280af22 3023 av_push(GvAVn(PL_incgv),
79cb57f6 3024 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
774d564b 3025
4fdae800 3026 /* .../archname if -d .../archname/auto */
774d564b 3027 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
3280af22 3028 strlen(PL_patchlevel) + 1, "", 0);
76e3520e 3029 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
774d564b 3030 S_ISDIR(tmpstatbuf.st_mode))
3280af22 3031 av_push(GvAVn(PL_incgv),
79cb57f6 3032 newSVpvn(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
774d564b 3033 }
3034
3035 /* finally push this lib directory on the end of @INC */
3280af22 3036 av_push(GvAVn(PL_incgv), libdir);
774d564b 3037 }
34de22dd 3038}
93a17b20 3039
199100c8 3040#ifdef USE_THREADS
76e3520e 3041STATIC struct perl_thread *
cea2e8a9 3042S_init_main_thread(pTHX)
199100c8 3043{
c5be433b 3044#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3045 struct perl_thread *thr;
cea2e8a9 3046#endif
199100c8
MB		 3047 XPV *xpv;
3048
52e1cb5e 3049 Newz(53, thr, 1, struct perl_thread);
533c011a 3050 PL_curcop = &PL_compiling;
c5be433b 3051 thr->interp = PERL_GET_INTERP;
199100c8 3052 thr->cvcache = newHV();
54b9620d 3053 thr->threadsv = newAV();
940cb80d 3054 /* thr->threadsvp is set when find_threadsv is called */
199100c8
MB		 3055 thr->specific = newAV();
3056 thr->flags = THRf_R_JOINABLE;
3057 MUTEX_INIT(&thr->mutex);
3058 /* Handcraft thrsv similarly to mess_sv */
533c011a 3059 New(53, PL_thrsv, 1, SV);
199100c8 3060 Newz(53, xpv, 1, XPV);
533c011a
NIS		 3061 SvFLAGS(PL_thrsv) = SVt_PV;
3062 SvANY(PL_thrsv) = (void*)xpv;
3063 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3064 SvPVX(PL_thrsv) = (char*)thr;
3065 SvCUR_set(PL_thrsv, sizeof(thr));
3066 SvLEN_set(PL_thrsv, sizeof(thr));
3067 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3068 thr->oursv = PL_thrsv;
3069 PL_chopset = " \n-";
3967c732 3070 PL_dumpindent = 4;
533c011a
NIS		 3071
3072 MUTEX_LOCK(&PL_threads_mutex);
3073 PL_nthreads++;
199100c8
MB		 3074 thr->tid = 0;
3075 thr->next = thr;
3076 thr->prev = thr;
533c011a 3077 MUTEX_UNLOCK(&PL_threads_mutex);
199100c8 3078
4b026b9e 3079#ifdef HAVE_THREAD_INTERN
4f63d024 3080 Perl_init_thread_intern(thr);
235db74f
GS		 3081#endif
3082
3083#ifdef SET_THREAD_SELF
3084 SET_THREAD_SELF(thr);
199100c8
MB		 3085#else
3086 thr->self = pthread_self();
235db74f 3087#endif /* SET_THREAD_SELF */
199100c8
MB		 3088 SET_THR(thr);
3089
3090 /*
3091 * These must come after the SET_THR because sv_setpvn does
3092 * SvTAINT and the taint fields require dTHR.
3093 */
533c011a
NIS		 3094 PL_toptarget = NEWSV(0,0);
3095 sv_upgrade(PL_toptarget, SVt_PVFM);
3096 sv_setpvn(PL_toptarget, "", 0);
3097 PL_bodytarget = NEWSV(0,0);
3098 sv_upgrade(PL_bodytarget, SVt_PVFM);
3099 sv_setpvn(PL_bodytarget, "", 0);
3100 PL_formtarget = PL_bodytarget;
79cb57f6 3101 thr->errsv = newSVpvn("", 0);
78857c3c 3102 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
5c0ca799 3103
533c011a 3104 PL_maxscream = -1;
0b94c7bb
GS		 3105 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3106 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3107 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3108 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3109 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
533c011a
NIS		 3110 PL_regindent = 0;
3111 PL_reginterp_cnt = 0;
5c0ca799 3112
199100c8
MB		 3113 return thr;
3114}
3115#endif /* USE_THREADS */
3116
93a17b20 3117void
864dbfa3 3118Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 3119{
11343788 3120 dTHR;
312caa8e 3121 SV *atsv = ERRSV;
3280af22 3122 line_t oldline = PL_curcop->cop_line;
312caa8e 3123 CV *cv;
22921e25 3124 STRLEN len;
6224f72b 3125 int ret;
db36c5a1 3126 dJMPENV;
93a17b20 3127
76e3520e 3128 while (AvFILL(paramList) >= 0) {
312caa8e 3129 cv = (CV*)av_shift(paramList);
8990e307 3130 SAVEFREESV(cv);
db36c5a1 3131 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_call_list_body), cv);
6224f72b 3132 switch (ret) {
312caa8e
CS		 3133 case 0:
3134 (void)SvPV(atsv, len);
3135 if (len) {
3136 PL_curcop = &PL_compiling;
3137 PL_curcop->cop_line = oldline;
3138 if (paramList == PL_beginav)
3139 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3140 else
4f25aa18
GS		 3141 Perl_sv_catpvf(aTHX_ atsv,
3142 "%s failed--call queue aborted",
3143 paramList == PL_stopav ? "STOP"
3144 : paramList == PL_initav ? "INIT"
3145 : "END");
312caa8e
CS		 3146 while (PL_scopestack_ix > oldscope)
3147 LEAVE;
cea2e8a9 3148 Perl_croak(aTHX_ "%s", SvPVX(atsv));
a0d0e21e 3149 }
85e6fe83 3150 break;
6224f72b 3151 case 1:
f86702cc 3152 STATUS_ALL_FAILURE;
85e6fe83 3153 /* FALL THROUGH */
6224f72b 3154 case 2:
85e6fe83 3155 /* my_exit() was called */
3280af22 3156 while (PL_scopestack_ix > oldscope)
2ae324a7 3157 LEAVE;
84902520 3158 FREETMPS;
3280af22 3159 PL_curstash = PL_defstash;
3280af22
NIS		 3160 PL_curcop = &PL_compiling;
3161 PL_curcop->cop_line = oldline;
3162 if (PL_statusvalue) {
3163 if (paramList == PL_beginav)
cea2e8a9 3164 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
85e6fe83 3165 else
4f25aa18
GS		 3166 Perl_croak(aTHX_ "%s failed--call queue aborted",
3167 paramList == PL_stopav ? "STOP"
3168 : paramList == PL_initav ? "INIT"
3169 : "END");
85e6fe83 3170 }
f86702cc 3171 my_exit_jump();
85e6fe83 3172 /* NOTREACHED */
6224f72b 3173 case 3:
312caa8e
CS		 3174 if (PL_restartop) {
3175 PL_curcop = &PL_compiling;
3176 PL_curcop->cop_line = oldline;
3177 JMPENV_JUMP(3);
85e6fe83 3178 }
bf49b057 3179 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e
CS		 3180 FREETMPS;
3181 break;
8990e307 3182 }
93a17b20 3183 }
93a17b20 3184}
93a17b20 3185
312caa8e 3186STATIC void *
cea2e8a9 3187S_call_list_body(pTHX_ va_list args)
312caa8e
CS		 3188{
3189 dTHR;
3190 CV *cv = va_arg(args, CV*);
3191
3192 PUSHMARK(PL_stack_sp);
864dbfa3 3193 call_sv((SV*)cv, G_EVAL|G_DISCARD);
312caa8e
CS		 3194 return NULL;
3195}
3196
f86702cc 3197void
864dbfa3 3198Perl_my_exit(pTHX_ U32 status)
f86702cc 3199{
5dc0d613
MB		 3200 dTHR;
3201
8b73bbec 3202 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
a863c7d1 3203 thr, (unsigned long) status));
f86702cc 3204 switch (status) {
3205 case 0:
3206 STATUS_ALL_SUCCESS;
3207 break;
3208 case 1:
3209 STATUS_ALL_FAILURE;
3210 break;
3211 default:
3212 STATUS_NATIVE_SET(status);
3213 break;
3214 }
3215 my_exit_jump();
3216}
3217
3218void
864dbfa3 3219Perl_my_failure_exit(pTHX)
f86702cc 3220{
3221#ifdef VMS
3222 if (vaxc$errno & 1) {
4fdae800 3223 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3224 STATUS_NATIVE_SET(44);
f86702cc 3225 }
3226 else {
ff0cee69 3227 if (!vaxc$errno && errno) /* unlikely */
4fdae800 3228 STATUS_NATIVE_SET(44);
f86702cc 3229 else
4fdae800 3230 STATUS_NATIVE_SET(vaxc$errno);
f86702cc 3231 }
3232#else
9b599b2a 3233 int exitstatus;
f86702cc 3234 if (errno & 255)
3235 STATUS_POSIX_SET(errno);
9b599b2a
GS		 3236 else {
3237 exitstatus = STATUS_POSIX >> 8;
3238 if (exitstatus & 255)
3239 STATUS_POSIX_SET(exitstatus);
3240 else
3241 STATUS_POSIX_SET(255);
3242 }
f86702cc 3243#endif
3244 my_exit_jump();
93a17b20
LW		 3245}
3246
76e3520e 3247STATIC void
cea2e8a9 3248S_my_exit_jump(pTHX)
f86702cc 3249{
de616352 3250 dTHR;
c09156bb 3251 register PERL_CONTEXT *cx;
f86702cc 3252 I32 gimme;
3253 SV **newsp;
3254
3280af22
NIS		 3255 if (PL_e_script) {
3256 SvREFCNT_dec(PL_e_script);
3257 PL_e_script = Nullsv;
f86702cc 3258 }
3259
3280af22 3260 POPSTACK_TO(PL_mainstack);
f86702cc 3261 if (cxstack_ix >= 0) {
3262 if (cxstack_ix > 0)
3263 dounwind(0);
3280af22 3264 POPBLOCK(cx,PL_curpm);
f86702cc 3265 LEAVE;
3266 }
ff0cee69 3267
6224f72b 3268 JMPENV_JUMP(2);
f86702cc 3269}
873ef191 3270
7a5f8e82 3271#ifdef PERL_OBJECT
873ef191 3272#include "XSUB.h"
51371543 3273#endif
873ef191 3274
0cb96387
GS		 3275static I32
3276read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
873ef191
GS		 3277{
3278 char *p, *nl;
3280af22 3279 p = SvPVX(PL_e_script);
873ef191 3280 nl = strchr(p, '\n');
3280af22 3281 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 3282 if (nl-p == 0) {
0cb96387 3283 filter_del(read_e_script);
873ef191 3284 return 0;
7dfe3f66 3285 }
873ef191 3286 sv_catpvn(buf_sv, p, nl-p);
3280af22 3287 sv_chop(PL_e_script, nl);
873ef191
GS		 3288 return 1;
3289}
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