This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
https://perl5.git.perl.org / perl5.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Re: [PATCH] xsubpp prototypes warnings
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW		 1/* perl.c
2 *
be3c0a43 3 * Copyright (c) 1987-2002 Larry Wall
a687059c 4 *
352d5a3a
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
8d063cd8
LW		 8 */
9
a0d0e21e
LW		 10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
df5cef82 19/* XXX If this causes problems, set i_unistd=undef in the hint file. */
a0d0e21e
LW		 20#ifdef I_UNISTD
21#include <unistd.h>
22#endif
a0d0e21e 23
7114a2d2 24#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 25char *getenv (char *); /* Usually in <stdlib.h> */
54310121 26#endif
27
acfe0abc 28static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 29
a687059c
LW		 30#ifdef IAMSUID
31#ifndef DOSUID
32#define DOSUID
33#endif
34#endif
378cc40b 35
a687059c
LW		 36#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
37#ifdef DOSUID
38#undef DOSUID
39#endif
40#endif
8d063cd8 41
4d1ff10f 42#if defined(USE_5005THREADS)
06d86050
GS		 43# define INIT_TLS_AND_INTERP \
44 STMT_START { \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
47 INIT_THREADS; \
48 ALLOC_THREAD_KEY; \
49 } \
50 } STMT_END
51#else
52# if defined(USE_ITHREADS)
53# define INIT_TLS_AND_INTERP \
54 STMT_START { \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
57 INIT_THREADS; \
58 ALLOC_THREAD_KEY; \
534825c4
GS		 59 PERL_SET_THX(my_perl); \
60 OP_REFCNT_INIT; \
61 } \
62 else { \
63 PERL_SET_THX(my_perl); \
06d86050 64 } \
06d86050
GS		 65 } STMT_END
66# else
67# define INIT_TLS_AND_INTERP \
68 STMT_START { \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
71 } \
72 PERL_SET_THX(my_perl); \
73 } STMT_END
74# endif
75#endif
76
32e30700
GS		 77#ifdef PERL_IMPLICIT_SYS
78PerlInterpreter *
7766f137
GS		 79perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
84{
85 PerlInterpreter *my_perl;
32e30700
GS		 86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 88 INIT_TLS_AND_INTERP;
32e30700
GS		 89 Zero(my_perl, 1, PerlInterpreter);
90 PL_Mem = ipM;
7766f137
GS		 91 PL_MemShared = ipMS;
92 PL_MemParse = ipMP;
32e30700
GS		 93 PL_Env = ipE;
94 PL_StdIO = ipStd;
95 PL_LIO = ipLIO;
96 PL_Dir = ipD;
97 PL_Sock = ipS;
98 PL_Proc = ipP;
7766f137 99
32e30700
GS		 100 return my_perl;
101}
102#else
954c1994
GS		 103
104/*
ccfc67b7
JH		 105=head1 Embedding Functions
106
954c1994
GS		 107=for apidoc perl_alloc
108
109Allocates a new Perl interpreter. See L<perlembed>.
110
111=cut
112*/
113
93a17b20 114PerlInterpreter *
cea2e8a9 115perl_alloc(void)
79072805 116{
cea2e8a9 117 PerlInterpreter *my_perl;
35d7cf2c
JH		 118#ifdef USE_5005THREADS
119 dTHX;
120#endif
79072805 121
54aff467 122 /* New() needs interpreter, so call malloc() instead */
e8ee3774 123 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 124
06d86050 125 INIT_TLS_AND_INTERP;
dedcbb81 126 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 127 return my_perl;
79072805 128}
32e30700 129#endif /* PERL_IMPLICIT_SYS */
79072805 130
954c1994
GS		 131/*
132=for apidoc perl_construct
133
134Initializes a new Perl interpreter. See L<perlembed>.
135
136=cut
137*/
138
79072805 139void
0cb96387 140perl_construct(pTHXx)
79072805 141{
4d1ff10f 142#ifdef USE_5005THREADS
a863c7d1 143#ifndef FAKE_THREADS
e1f15930 144 struct perl_thread *thr = NULL;
a863c7d1 145#endif /* FAKE_THREADS */
4d1ff10f 146#endif /* USE_5005THREADS */
ba869deb 147
8990e307 148#ifdef MULTIPLICITY
54aff467 149 init_interp();
ac27b0f5 150 PL_perl_destruct_level = 1;
54aff467
GS		 151#else
152 if (PL_perl_destruct_level > 0)
153 init_interp();
154#endif
155
33f46ff6 156 /* Init the real globals (and main thread)? */
3280af22 157 if (!PL_linestr) {
4d1ff10f 158#ifdef USE_5005THREADS
533c011a 159 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB		 160 /*
161 * Safe to use basic SV functions from now on (though
162 * not things like mortals or tainting yet).
163 */
533c011a
NIS		 164 MUTEX_INIT(&PL_eval_mutex);
165 COND_INIT(&PL_eval_cond);
166 MUTEX_INIT(&PL_threads_mutex);
167 COND_INIT(&PL_nthreads_cond);
ba869deb 168# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 169 MUTEX_INIT(&PL_svref_mutex);
ba869deb 170# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 171
5ff3f7a4 172 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS		 173 MUTEX_INIT(&PL_sv_lock_mutex);
174 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 175
199100c8 176 thr = init_main_thread();
4d1ff10f 177#endif /* USE_5005THREADS */
11343788 178
14dd3ad8 179#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 180 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 181#endif
312caa8e 182
2aea9f8a
GS		 183 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
184
3280af22
NIS		 185 PL_linestr = NEWSV(65,79);
186 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 187
3280af22 188 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP		 189 /* set read-only and try to insure than we wont see REFCNT==0
190 very often */
191
3280af22
NIS		 192 SvREADONLY_on(&PL_sv_undef);
193 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 194
3280af22
NIS		 195 sv_setpv(&PL_sv_no,PL_No);
196 SvNV(&PL_sv_no);
197 SvREADONLY_on(&PL_sv_no);
198 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 199
3280af22
NIS		 200 sv_setpv(&PL_sv_yes,PL_Yes);
201 SvNV(&PL_sv_yes);
202 SvREADONLY_on(&PL_sv_yes);
203 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 204 }
79072805 205
cea2e8a9 206 PL_sighandlerp = Perl_sighandler;
3280af22 207 PL_pidstatus = newHV();
79072805
LW		 208 }
209
8bfdd7d9 210 PL_rs = newSVpvn("\n", 1);
dc92893f 211
cea2e8a9 212 init_stacks();
79072805 213
748a9306 214 init_ids();
3280af22 215 PL_lex_state = LEX_NOTPARSING;
a5f75d66 216
312caa8e 217 JMPENV_BOOTSTRAP;
f86702cc 218 STATUS_ALL_SUCCESS;
219
0672f40e 220 init_i18nl10n(1);
36477c24 221 SET_NUMERIC_STANDARD();
0b5b802d 222
a7cb1f99
GS		 223 {
224 U8 *s;
225 PL_patchlevel = NEWSV(0,4);
155aba94 226 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 227 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 228 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 229 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS		 230 /* Build version strings using "native" characters */
231 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
232 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
233 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS		 234 *s = '\0';
235 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
236 SvPOK_on(PL_patchlevel);
237 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
238 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 239#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 240 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 241#endif
a7cb1f99
GS		 242 ;
243 SvNOK_on(PL_patchlevel); /* dual valued */
244 SvUTF8_on(PL_patchlevel);
245 SvREADONLY_on(PL_patchlevel);
246 }
79072805 247
ab821d7f 248#if defined(LOCAL_PATCH_COUNT)
3280af22 249 PL_localpatches = local_patches; /* For possible -v */
ab821d7f 250#endif
251
52853b95
GS		 252#ifdef HAVE_INTERP_INTERN
253 sys_intern_init();
254#endif
255
3a1ee7e8 256 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 257
3280af22
NIS		 258 PL_fdpid = newAV(); /* for remembering popen pids by fd */
259 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 260 PL_errors = newSVpvn("",0);
1fcf4c12 261#ifdef USE_ITHREADS
13137afc
AB		 262 PL_regex_padav = newAV();
263 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
264 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 265#endif
e5dd39fc 266#ifdef USE_REENTRANT_API
59bd0823 267 Perl_reentrant_init(aTHX);
e5dd39fc 268#endif
3d47000e
AB		 269
270 /* Note that strtab is a rather special HV. Assumptions are made
271 about not iterating on it, and not adding tie magic to it.
272 It is properly deallocated in perl_destruct() */
273 PL_strtab = newHV();
274
275#ifdef USE_5005THREADS
276 MUTEX_INIT(&PL_strtab_mutex);
277#endif
278 HvSHAREKEYS_off(PL_strtab); /* mandatory */
279 hv_ksplit(PL_strtab, 512);
280
0631ea03
AB		 281#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
282 _dyld_lookup_and_bind
283 ("__environ", (unsigned long *) &environ_pointer, NULL);
284#endif /* environ */
285
286#ifdef USE_ENVIRON_ARRAY
287 PL_origenviron = environ;
288#endif
289
8990e307 290 ENTER;
79072805
LW		 291}
292
954c1994
GS		 293/*
294=for apidoc perl_destruct
295
296Shuts down a Perl interpreter. See L<perlembed>.
297
298=cut
299*/
300
31d77e54 301int
0cb96387 302perl_destruct(pTHXx)
79072805 303{
7c474504 304 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 305 HV *hv;
4d1ff10f 306#ifdef USE_5005THREADS
33f46ff6 307 Thread t;
cea2e8a9 308 dTHX;
4d1ff10f 309#endif /* USE_5005THREADS */
8990e307 310
7766f137
GS		 311 /* wait for all pseudo-forked children to finish */
312 PERL_WAIT_FOR_CHILDREN;
313
4d1ff10f 314#ifdef USE_5005THREADS
0f15f207 315#ifndef FAKE_THREADS
8023c3ce
MB		 316 /* Pass 1 on any remaining threads: detach joinables, join zombies */
317 retry_cleanup:
533c011a 318 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 319 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 320 "perl_destruct: waiting for %d threads...\n",
533c011a 321 PL_nthreads - 1));
33f46ff6 322 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB		 323 MUTEX_LOCK(&t->mutex);
324 switch (ThrSTATE(t)) {
325 AV *av;
c7848ba1 326 case THRf_ZOMBIE:
bf49b057 327 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 328 "perl_destruct: joining zombie %p\n", t));
605e5515
MB		 329 ThrSETSTATE(t, THRf_DEAD);
330 MUTEX_UNLOCK(&t->mutex);
533c011a 331 PL_nthreads--;
8023c3ce
MB		 332 /*
333 * The SvREFCNT_dec below may take a long time (e.g. av
334 * may contain an object scalar whose destructor gets
335 * called) so we have to unlock threads_mutex and start
336 * all over again.
337 */
533c011a 338 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 339 JOIN(t, &av);
605e5515 340 SvREFCNT_dec((SV*)av);
bf49b057 341 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 342 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 343 goto retry_cleanup;
c7848ba1 344 case THRf_R_JOINABLE:
bf49b057 345 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 346 "perl_destruct: detaching thread %p\n", t));
347 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 348 /*
c7848ba1
MB		 349 * We unlock threads_mutex and t->mutex in the opposite order
350 * from which we locked them just so that DETACH won't
351 * deadlock if it panics. It's only a breach of good style
352 * not a bug since they are unlocks not locks.
353 */
533c011a 354 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB		 355 DETACH(t);
356 MUTEX_UNLOCK(&t->mutex);
8023c3ce 357 goto retry_cleanup;
c7848ba1 358 default:
bf49b057 359 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB		 360 "perl_destruct: ignoring %p (state %u)\n",
361 t, ThrSTATE(t)));
362 MUTEX_UNLOCK(&t->mutex);
c7848ba1 363 /* fall through and out */
33f46ff6
MB		 364 }
365 }
8023c3ce
MB		 366 /* We leave the above "Pass 1" loop with threads_mutex still locked */
367
368 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 369 while (PL_nthreads > 1)
11343788 370 {
bf49b057 371 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 372 "perl_destruct: final wait for %d threads\n",
533c011a
NIS		 373 PL_nthreads - 1));
374 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB		 375 }
376 /* At this point, we're the last thread */
533c011a 377 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 378 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS		 379 MUTEX_DESTROY(&PL_threads_mutex);
380 COND_DESTROY(&PL_nthreads_cond);
b57a092c 381 PL_nthreads--;
0f15f207 382#endif /* !defined(FAKE_THREADS) */
4d1ff10f 383#endif /* USE_5005THREADS */
11343788 384
3280af22 385 destruct_level = PL_perl_destruct_level;
4633a7c4
LW		 386#ifdef DEBUGGING
387 {
388 char *s;
155aba94 389 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc 390 int i = atoi(s);
391 if (destruct_level < i)
392 destruct_level = i;
393 }
4633a7c4
LW		 394 }
395#endif
396
31d77e54
AB		 397
398 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 399 dJMPENV;
400 int x = 0;
401
402 JMPENV_PUSH(x);
403 if (PL_endav && !PL_minus_c)
404 call_list(PL_scopestack_ix, PL_endav);
405 JMPENV_POP;
26f423df 406 }
f3faeb53 407 LEAVE;
a0d0e21e
LW		 408 FREETMPS;
409
ff0cee69 410 /* We must account for everything. */
411
412 /* Destroy the main CV and syntax tree */
3280af22
NIS		 413 if (PL_main_root) {
414 PL_curpad = AvARRAY(PL_comppad);
415 op_free(PL_main_root);
416 PL_main_root = Nullop;
a0d0e21e 417 }
3280af22
NIS		 418 PL_curcop = &PL_compiling;
419 PL_main_start = Nullop;
420 SvREFCNT_dec(PL_main_cv);
421 PL_main_cv = Nullcv;
24d3c518 422 PL_dirty = TRUE;
ff0cee69 423
13621cfb
NIS		 424 /* Tell PerlIO we are about to tear things apart in case
425 we have layers which are using resources that should
426 be cleaned up now.
427 */
428
429 PerlIO_destruct(aTHX);
430
3280af22 431 if (PL_sv_objcount) {
a0d0e21e
LW		 432 /*
433 * Try to destruct global references. We do this first so that the
434 * destructors and destructees still exist. Some sv's might remain.
435 * Non-referenced objects are on their own.
436 */
a0d0e21e 437 sv_clean_objs();
8990e307
LW		 438 }
439
5cd24f17 440 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS		 441 SvREFCNT_dec(PL_warnhook);
442 PL_warnhook = Nullsv;
443 SvREFCNT_dec(PL_diehook);
444 PL_diehook = Nullsv;
5cd24f17 445
4b556e6c 446 /* call exit list functions */
3280af22 447 while (PL_exitlistlen-- > 0)
acfe0abc 448 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 449
3280af22 450 Safefree(PL_exitlist);
4b556e6c 451
a0d0e21e 452 if (destruct_level == 0){
8990e307 453
a0d0e21e 454 DEBUG_P(debprofdump());
ac27b0f5 455
56a2bab7
NIS		 456#if defined(PERLIO_LAYERS)
457 /* No more IO - including error messages ! */
458 PerlIO_cleanup(aTHX);
459#endif
460
a0d0e21e 461 /* The exit() function will do everything that needs doing. */
31d77e54 462 return STATUS_NATIVE_EXPORT;;
a0d0e21e 463 }
5dd60ef7 464
551a8b83 465 /* jettison our possibly duplicated environment */
4b647fb0
DM		 466 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
467 * so we certainly shouldn't free it here
468 */
469#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
551a8b83
JH		 470 if (environ != PL_origenviron) {
471 I32 i;
472
473 for (i = 0; environ[i]; i++)
4b420006 474 safesysfree(environ[i]);
0631ea03 475
4b420006
JH		 476 /* Must use safesysfree() when working with environ. */
477 safesysfree(environ);
551a8b83
JH		 478
479 environ = PL_origenviron;
480 }
481#endif
482
5f8cb046
DM		 483#ifdef USE_ITHREADS
484 /* the syntax tree is shared between clones
485 * so op_free(PL_main_root) only ReREFCNT_dec's
486 * REGEXPs in the parent interpreter
487 * we need to manually ReREFCNT_dec for the clones
488 */
489 {
490 I32 i = AvFILLp(PL_regex_padav) + 1;
491 SV **ary = AvARRAY(PL_regex_padav);
492
493 while (i) {
35061a7e 494 SV *resv = ary[--i];
ba89bb6e 495 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM		 496
497 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 498 /* this is PL_reg_curpm, already freed
35061a7e
DM		 499 * flag is set in regexec.c:S_regtry
500 */
501 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 502 }
1cc8b4c5
AB		 503 else if(SvREPADTMP(resv)) {
504 SvREPADTMP_off(resv);
505 }
35061a7e 506 else {
5f8cb046
DM		 507 ReREFCNT_dec(re);
508 }
509 }
510 }
511 SvREFCNT_dec(PL_regex_padav);
512 PL_regex_padav = Nullav;
513 PL_regex_pad = NULL;
514#endif
515
5f05dabc 516 /* loosen bonds of global variables */
517
3280af22
NIS		 518 if(PL_rsfp) {
519 (void)PerlIO_close(PL_rsfp);
520 PL_rsfp = Nullfp;
8ebc5c01 521 }
522
523 /* Filters for program text */
3280af22
NIS		 524 SvREFCNT_dec(PL_rsfp_filters);
525 PL_rsfp_filters = Nullav;
8ebc5c01 526
527 /* switches */
3280af22
NIS		 528 PL_preprocess = FALSE;
529 PL_minus_n = FALSE;
530 PL_minus_p = FALSE;
531 PL_minus_l = FALSE;
532 PL_minus_a = FALSE;
533 PL_minus_F = FALSE;
534 PL_doswitches = FALSE;
599cee73 535 PL_dowarn = G_WARN_OFF;
3280af22
NIS		 536 PL_doextract = FALSE;
537 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS		 538 PL_unsafe = FALSE;
539
540 Safefree(PL_inplace);
541 PL_inplace = Nullch;
a7cb1f99 542 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 543
544 if (PL_e_script) {
545 SvREFCNT_dec(PL_e_script);
546 PL_e_script = Nullsv;
8ebc5c01 547 }
548
bc0a45ed
DM		 549 while (--PL_origargc >= 0) {
550 Safefree(PL_origargv[PL_origargc]);
551 }
552 Safefree(PL_origargv);
553
8ebc5c01 554 /* magical thingies */
555
7889fe52
NIS		 556 SvREFCNT_dec(PL_ofs_sv); /* $, */
557 PL_ofs_sv = Nullsv;
5f05dabc 558
7889fe52
NIS		 559 SvREFCNT_dec(PL_ors_sv); /* $\ */
560 PL_ors_sv = Nullsv;
8ebc5c01 561
3280af22
NIS		 562 SvREFCNT_dec(PL_rs); /* $/ */
563 PL_rs = Nullsv;
dc92893f 564
d33b2eba
GS		 565 PL_multiline = 0; /* $* */
566 Safefree(PL_osname); /* $^O */
567 PL_osname = Nullch;
5f05dabc 568
3280af22
NIS		 569 SvREFCNT_dec(PL_statname);
570 PL_statname = Nullsv;
571 PL_statgv = Nullgv;
5f05dabc 572
8ebc5c01 573 /* defgv, aka *_ should be taken care of elsewhere */
574
8ebc5c01 575 /* clean up after study() */
3280af22
NIS		 576 SvREFCNT_dec(PL_lastscream);
577 PL_lastscream = Nullsv;
578 Safefree(PL_screamfirst);
579 PL_screamfirst = 0;
580 Safefree(PL_screamnext);
581 PL_screamnext = 0;
8ebc5c01 582
7d5ea4e7
GS		 583 /* float buffer */
584 Safefree(PL_efloatbuf);
585 PL_efloatbuf = Nullch;
586 PL_efloatsize = 0;
587
8ebc5c01 588 /* startup and shutdown function lists */
3280af22 589 SvREFCNT_dec(PL_beginav);
5a837c8f 590 SvREFCNT_dec(PL_beginav_save);
3280af22 591 SvREFCNT_dec(PL_endav);
7d30b5c4 592 SvREFCNT_dec(PL_checkav);
3280af22
NIS		 593 SvREFCNT_dec(PL_initav);
594 PL_beginav = Nullav;
5a837c8f 595 PL_beginav_save = Nullav;
3280af22 596 PL_endav = Nullav;
7d30b5c4 597 PL_checkav = Nullav;
3280af22 598 PL_initav = Nullav;
5618dfe8 599
8ebc5c01 600 /* shortcuts just get cleared */
3280af22 601 PL_envgv = Nullgv;
3280af22
NIS		 602 PL_incgv = Nullgv;
603 PL_hintgv = Nullgv;
604 PL_errgv = Nullgv;
605 PL_argvgv = Nullgv;
606 PL_argvoutgv = Nullgv;
607 PL_stdingv = Nullgv;
bf49b057 608 PL_stderrgv = Nullgv;
3280af22
NIS		 609 PL_last_in_gv = Nullgv;
610 PL_replgv = Nullgv;
5c831c24 611 PL_debstash = Nullhv;
8ebc5c01 612
613 /* reset so print() ends up where we expect */
614 setdefout(Nullgv);
5c831c24 615
7a1c5554
GS		 616 SvREFCNT_dec(PL_argvout_stack);
617 PL_argvout_stack = Nullav;
8ebc5c01 618
5c831c24
GS		 619 SvREFCNT_dec(PL_modglobal);
620 PL_modglobal = Nullhv;
621 SvREFCNT_dec(PL_preambleav);
622 PL_preambleav = Nullav;
623 SvREFCNT_dec(PL_subname);
624 PL_subname = Nullsv;
625 SvREFCNT_dec(PL_linestr);
626 PL_linestr = Nullsv;
627 SvREFCNT_dec(PL_pidstatus);
628 PL_pidstatus = Nullhv;
629 SvREFCNT_dec(PL_toptarget);
630 PL_toptarget = Nullsv;
631 SvREFCNT_dec(PL_bodytarget);
632 PL_bodytarget = Nullsv;
633 PL_formtarget = Nullsv;
634
d33b2eba 635 /* free locale stuff */
b9582b6a 636#ifdef USE_LOCALE_COLLATE
d33b2eba
GS		 637 Safefree(PL_collation_name);
638 PL_collation_name = Nullch;
b9582b6a 639#endif
d33b2eba 640
b9582b6a 641#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS		 642 Safefree(PL_numeric_name);
643 PL_numeric_name = Nullch;
a453c169 644 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 645#endif
d33b2eba 646
5c831c24
GS		 647 /* clear utf8 character classes */
648 SvREFCNT_dec(PL_utf8_alnum);
649 SvREFCNT_dec(PL_utf8_alnumc);
650 SvREFCNT_dec(PL_utf8_ascii);
651 SvREFCNT_dec(PL_utf8_alpha);
652 SvREFCNT_dec(PL_utf8_space);
653 SvREFCNT_dec(PL_utf8_cntrl);
654 SvREFCNT_dec(PL_utf8_graph);
655 SvREFCNT_dec(PL_utf8_digit);
656 SvREFCNT_dec(PL_utf8_upper);
657 SvREFCNT_dec(PL_utf8_lower);
658 SvREFCNT_dec(PL_utf8_print);
659 SvREFCNT_dec(PL_utf8_punct);
660 SvREFCNT_dec(PL_utf8_xdigit);
661 SvREFCNT_dec(PL_utf8_mark);
662 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 663 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 664 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 665 SvREFCNT_dec(PL_utf8_tofold);
5c831c24
GS		 666 PL_utf8_alnum = Nullsv;
667 PL_utf8_alnumc = Nullsv;
668 PL_utf8_ascii = Nullsv;
669 PL_utf8_alpha = Nullsv;
670 PL_utf8_space = Nullsv;
671 PL_utf8_cntrl = Nullsv;
672 PL_utf8_graph = Nullsv;
673 PL_utf8_digit = Nullsv;
674 PL_utf8_upper = Nullsv;
675 PL_utf8_lower = Nullsv;
676 PL_utf8_print = Nullsv;
677 PL_utf8_punct = Nullsv;
678 PL_utf8_xdigit = Nullsv;
679 PL_utf8_mark = Nullsv;
680 PL_utf8_toupper = Nullsv;
681 PL_utf8_totitle = Nullsv;
682 PL_utf8_tolower = Nullsv;
b4e400f9 683 PL_utf8_tofold = Nullsv;
5c831c24 684
971a9dd3
GS		 685 if (!specialWARN(PL_compiling.cop_warnings))
686 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 687 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS		 688 if (!specialCopIO(PL_compiling.cop_io))
689 SvREFCNT_dec(PL_compiling.cop_io);
690 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS		 691 CopFILE_free(&PL_compiling);
692 CopSTASH_free(&PL_compiling);
5c831c24 693
a0d0e21e 694 /* Prepare to destruct main symbol table. */
5f05dabc 695
3280af22
NIS		 696 hv = PL_defstash;
697 PL_defstash = 0;
a0d0e21e 698 SvREFCNT_dec(hv);
5c831c24
GS		 699 SvREFCNT_dec(PL_curstname);
700 PL_curstname = Nullsv;
a0d0e21e 701
5a844595
GS		 702 /* clear queued errors */
703 SvREFCNT_dec(PL_errors);
704 PL_errors = Nullsv;
705
a0d0e21e 706 FREETMPS;
0453d815 707 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 708 if (PL_scopestack_ix != 0)
0453d815
PM		 709 Perl_warner(aTHX_ WARN_INTERNAL,
710 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS		 711 (long)PL_scopestack_ix);
712 if (PL_savestack_ix != 0)
0453d815
PM		 713 Perl_warner(aTHX_ WARN_INTERNAL,
714 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS		 715 (long)PL_savestack_ix);
716 if (PL_tmps_floor != -1)
0453d815 717 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 718 (long)PL_tmps_floor + 1);
a0d0e21e 719 if (cxstack_ix != -1)
0453d815 720 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 721 (long)cxstack_ix + 1);
a0d0e21e 722 }
8990e307
LW		 723
724 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 725 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 726 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH		 727
728 /* the 2 is for PL_fdpid and PL_strtab */
729 while (PL_sv_count > 2 && sv_clean_all())
730 ;
731
d33b2eba
GS		 732 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
733 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS		 734 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
735 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 736
d4777f27
GS		 737 AvREAL_off(PL_fdpid); /* no surviving entries */
738 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS		 739 PL_fdpid = Nullav;
740
6c644e78
GS		 741#ifdef HAVE_INTERP_INTERN
742 sys_intern_clear();
743#endif
744
6e72f9df 745 /* Destruct the global string table. */
746 {
747 /* Yell and reset the HeVAL() slots that are still holding refcounts,
748 * so that sv_free() won't fail on them.
749 */
750 I32 riter;
751 I32 max;
752 HE *hent;
753 HE **array;
754
755 riter = 0;
3280af22
NIS		 756 max = HvMAX(PL_strtab);
757 array = HvARRAY(PL_strtab);
6e72f9df 758 hent = array[0];
759 for (;;) {
0453d815
PM		 760 if (hent && ckWARN_d(WARN_INTERNAL)) {
761 Perl_warner(aTHX_ WARN_INTERNAL,
762 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 763 HeVAL(hent) - Nullsv, HeKEY(hent));
764 HeVAL(hent) = Nullsv;
765 hent = HeNEXT(hent);
766 }
767 if (!hent) {
768 if (++riter > max)
769 break;
770 hent = array[riter];
771 }
772 }
773 }
3280af22 774 SvREFCNT_dec(PL_strtab);
6e72f9df 775
e652bb2f 776#ifdef USE_ITHREADS
a0739874
DM		 777 /* free the pointer table used for cloning */
778 ptr_table_free(PL_ptr_table);
53186e96 779#endif
a0739874 780
d33b2eba
GS		 781 /* free special SVs */
782
783 SvREFCNT(&PL_sv_yes) = 0;
784 sv_clear(&PL_sv_yes);
785 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 786 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 787
788 SvREFCNT(&PL_sv_no) = 0;
789 sv_clear(&PL_sv_no);
790 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 791 SvFLAGS(&PL_sv_no) = 0;
01724ea0
GS		 792
793 SvREFCNT(&PL_sv_undef) = 0;
794 SvREADONLY_off(&PL_sv_undef);
d33b2eba 795
0453d815
PM		 796 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
797 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 798
56a2bab7 799#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 800 /* No more IO - including error messages ! */
801 PerlIO_cleanup(aTHX);
802#endif
803
3280af22 804 Safefree(PL_origfilename);
3280af22 805 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ		 806 if (PL_reg_curpm)
807 Safefree(PL_reg_curpm);
82ba1be6 808 Safefree(PL_reg_poscache);
3280af22
NIS		 809 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
810 Safefree(PL_op_mask);
cf36064f
GS		 811 Safefree(PL_psig_ptr);
812 Safefree(PL_psig_name);
2c2666fc 813 Safefree(PL_bitcount);
ce08f86c 814 Safefree(PL_psig_pend);
6e72f9df 815 nuke_stacks();
3280af22 816 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 817
a0d0e21e 818 DEBUG_P(debprofdump());
4d1ff10f 819#ifdef USE_5005THREADS
5f08fbcd 820 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS		 821 MUTEX_DESTROY(&PL_sv_mutex);
822 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 823 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 824 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 825 COND_DESTROY(&PL_eval_cond);
11d617a5
GS		 826#ifdef EMULATE_ATOMIC_REFCOUNTS
827 MUTEX_DESTROY(&PL_svref_mutex);
828#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 829
8023c3ce 830 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS		 831 Safefree(SvPVX(PL_thrsv));
832 Safefree(SvANY(PL_thrsv));
833 Safefree(PL_thrsv);
834 PL_thrsv = Nullsv;
4d1ff10f 835#endif /* USE_5005THREADS */
d33b2eba 836
e5dd39fc 837#ifdef USE_REENTRANT_API
59bd0823 838 Safefree(PL_reentrant_buffer->tmbuf);
e5dd39fc
AB		 839 Safefree(PL_reentrant_buffer);
840#endif
841
612f20c3
GS		 842 sv_free_arenas();
843
fc36a67e 844 /* As the absolutely last thing, free the non-arena SV for mess() */
845
3280af22 846 if (PL_mess_sv) {
9c63abab
GS		 847 /* it could have accumulated taint magic */
848 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
849 MAGIC* mg;
850 MAGIC* moremagic;
851 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
852 moremagic = mg->mg_moremagic;
14befaf4
DM		 853 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
854 && mg->mg_len >= 0)
9c63abab
GS		 855 Safefree(mg->mg_ptr);
856 Safefree(mg);
857 }
858 }
fc36a67e 859 /* we know that type >= SVt_PV */
155aba94 860 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS		 861 Safefree(SvPVX(PL_mess_sv));
862 Safefree(SvANY(PL_mess_sv));
863 Safefree(PL_mess_sv);
864 PL_mess_sv = Nullsv;
fc36a67e 865 }
31d77e54 866 return STATUS_NATIVE_EXPORT;
79072805
LW		 867}
868
954c1994
GS		 869/*
870=for apidoc perl_free
871
872Releases a Perl interpreter. See L<perlembed>.
873
874=cut
875*/
876
79072805 877void
0cb96387 878perl_free(pTHXx)
79072805 879{
acfe0abc 880#if defined(WIN32) || defined(NETWARE)
ce3e5b80 881# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS		 882# ifdef NETWARE
883 void *host = nw_internal_host;
884# else
885 void *host = w32_internal_host;
886# endif
ce3e5b80 887 PerlMem_free(aTHXx);
acfe0abc
GS		 888# ifdef NETWARE
889 nw5_delete_internal_host(host);
890# else
891 win32_delete_internal_host(host);
892# endif
1c0ca838
GS		 893# else
894 PerlMem_free(aTHXx);
895# endif
acfe0abc
GS		 896#else
897 PerlMem_free(aTHXx);
76e3520e 898#endif
79072805
LW		 899}
900
4b556e6c 901void
864dbfa3 902Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 903{
3280af22
NIS		 904 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
905 PL_exitlist[PL_exitlistlen].fn = fn;
906 PL_exitlist[PL_exitlistlen].ptr = ptr;
907 ++PL_exitlistlen;
4b556e6c
JD		 908}
909
954c1994
GS		 910/*
911=for apidoc perl_parse
912
913Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
914
915=cut
916*/
917
79072805 918int
0cb96387 919perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 920{
6224f72b 921 I32 oldscope;
6224f72b 922 int ret;
db36c5a1 923 dJMPENV;
4d1ff10f 924#ifdef USE_5005THREADS
cea2e8a9
GS		 925 dTHX;
926#endif
8d063cd8 927
a687059c
LW		 928#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
929#ifdef IAMSUID
930#undef IAMSUID
cea2e8a9 931 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW		 932setuid perl scripts securely.\n");
933#endif
934#endif
935
3280af22 936 PL_origargc = argc;
bc0a45ed
DM		 937 {
938 /* we copy rather than point to argv
939 * since perl_clone will copy and perl_destruct
3a1ee7e8 940 * has no way of knowing if we've made a copy or
bc0a45ed
DM		 941 * just point to argv
942 */
943 int i = PL_origargc;
944 New(0, PL_origargv, i+1, char*);
945 PL_origargv[i] = '\0';
946 while (i-- > 0) {
947 PL_origargv[i] = savepv(argv[i]);
948 }
949 }
950
0631ea03 951
a0d0e21e 952
3280af22 953 if (PL_do_undump) {
a0d0e21e
LW		 954
955 /* Come here if running an undumped a.out. */
956
3280af22
NIS		 957 PL_origfilename = savepv(argv[0]);
958 PL_do_undump = FALSE;
a0d0e21e 959 cxstack_ix = -1; /* start label stack again */
748a9306 960 init_ids();
a0d0e21e
LW		 961 init_postdump_symbols(argc,argv,env);
962 return 0;
963 }
964
3280af22
NIS		 965 if (PL_main_root) {
966 PL_curpad = AvARRAY(PL_comppad);
967 op_free(PL_main_root);
968 PL_main_root = Nullop;
ff0cee69 969 }
3280af22
NIS		 970 PL_main_start = Nullop;
971 SvREFCNT_dec(PL_main_cv);
972 PL_main_cv = Nullcv;
79072805 973
3280af22
NIS		 974 time(&PL_basetime);
975 oldscope = PL_scopestack_ix;
599cee73 976 PL_dowarn = G_WARN_OFF;
f86702cc 977
14dd3ad8
GS		 978#ifdef PERL_FLEXIBLE_EXCEPTIONS
979 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
980#else
981 JMPENV_PUSH(ret);
982#endif
6224f72b 983 switch (ret) {
312caa8e 984 case 0:
14dd3ad8
GS		 985#ifndef PERL_FLEXIBLE_EXCEPTIONS
986 parse_body(env,xsinit);
987#endif
7d30b5c4
GS		 988 if (PL_checkav)
989 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 990 ret = 0;
991 break;
6224f72b
GS		 992 case 1:
993 STATUS_ALL_FAILURE;
994 /* FALL THROUGH */
995 case 2:
996 /* my_exit() was called */
3280af22 997 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 998 LEAVE;
999 FREETMPS;
3280af22 1000 PL_curstash = PL_defstash;
7d30b5c4
GS		 1001 if (PL_checkav)
1002 call_list(oldscope, PL_checkav);
14dd3ad8
GS		 1003 ret = STATUS_NATIVE_EXPORT;
1004 break;
6224f72b 1005 case 3:
bf49b057 1006 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1007 ret = 1;
1008 break;
6224f72b 1009 }
14dd3ad8
GS		 1010 JMPENV_POP;
1011 return ret;
1012}
1013
1014#ifdef PERL_FLEXIBLE_EXCEPTIONS
1015STATIC void *
1016S_vparse_body(pTHX_ va_list args)
1017{
1018 char **env = va_arg(args, char**);
1019 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1020
1021 return parse_body(env, xsinit);
312caa8e 1022}
14dd3ad8 1023#endif
312caa8e
CS		 1024
1025STATIC void *
14dd3ad8 1026S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1027{
312caa8e
CS		 1028 int argc = PL_origargc;
1029 char **argv = PL_origargv;
312caa8e
CS		 1030 char *scriptname = NULL;
1031 int fdscript = -1;
1032 VOL bool dosearch = FALSE;
1033 char *validarg = "";
1034 AV* comppadlist;
1035 register SV *sv;
1036 register char *s;
cf756827 1037 char *cddir = Nullch;
312caa8e 1038
3280af22 1039 sv_setpvn(PL_linestr,"",0);
79cb57f6 1040 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS		 1041 SAVEFREESV(sv);
1042 init_main_stash();
54310121 1043
6224f72b
GS		 1044 for (argc--,argv++; argc > 0; argc--,argv++) {
1045 if (argv[0][0] != '-' || !argv[0][1])
1046 break;
1047#ifdef DOSUID
1048 if (*validarg)
1049 validarg = " PHOOEY ";
1050 else
1051 validarg = argv[0];
13281fa4 1052#endif
6224f72b
GS		 1053 s = argv[0]+1;
1054 reswitch:
1055 switch (*s) {
729a02f2
GS		 1056 case 'C':
1057#ifdef WIN32
c0932edc 1058 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS		 1059 /* FALL THROUGH */
1060#endif
1d5472a9
GS		 1061#ifndef PERL_STRICT_CR
1062 case '\r':
1063#endif
6224f72b
GS		 1064 case ' ':
1065 case '0':
1066 case 'F':
1067 case 'a':
1068 case 'c':
1069 case 'd':
1070 case 'D':
1071 case 'h':
1072 case 'i':
1073 case 'l':
1074 case 'M':
1075 case 'm':
1076 case 'n':
1077 case 'p':
1078 case 's':
1079 case 'u':
1080 case 'U':
1081 case 'v':
599cee73
PM		 1082 case 'W':
1083 case 'X':
6224f72b 1084 case 'w':
155aba94 1085 if ((s = moreswitches(s)))
6224f72b
GS		 1086 goto reswitch;
1087 break;
33b78306 1088
1dbad523 1089 case 't':
317ea90d
MS		 1090 if( !PL_tainting ) {
1091 PL_taint_warn = TRUE;
1092 PL_tainting = TRUE;
1093 }
1094 s++;
1095 goto reswitch;
6224f72b 1096 case 'T':
3280af22 1097 PL_tainting = TRUE;
317ea90d 1098 PL_taint_warn = FALSE;
6224f72b
GS		 1099 s++;
1100 goto reswitch;
f86702cc 1101
6224f72b 1102 case 'e':
bf4acbe4
GS		 1103#ifdef MACOS_TRADITIONAL
1104 /* ignore -e for Dev:Pseudo argument */
1105 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
ac27b0f5 1106 break;
bf4acbe4 1107#endif
3280af22 1108 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1109 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1110 if (!PL_e_script) {
79cb57f6 1111 PL_e_script = newSVpvn("",0);
0cb96387 1112 filter_add(read_e_script, NULL);
6224f72b
GS		 1113 }
1114 if (*++s)
3280af22 1115 sv_catpv(PL_e_script, s);
6224f72b 1116 else if (argv[1]) {
3280af22 1117 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1118 argc--,argv++;
1119 }
1120 else
cea2e8a9 1121 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1122 sv_catpv(PL_e_script, "\n");
6224f72b 1123 break;
afe37c7d 1124
6224f72b
GS		 1125 case 'I': /* -I handled both here and in moreswitches() */
1126 forbid_setid("-I");
1127 if (!*++s && (s=argv[1]) != Nullch) {
1128 argc--,argv++;
1129 }
6224f72b 1130 if (s && *s) {
0df16ed7
GS		 1131 char *p;
1132 STRLEN len = strlen(s);
1133 p = savepvn(s, len);
9c8a64f0 1134 incpush(p, TRUE, TRUE);
0df16ed7
GS		 1135 sv_catpvn(sv, "-I", 2);
1136 sv_catpvn(sv, p, len);
1137 sv_catpvn(sv, " ", 1);
6224f72b 1138 Safefree(p);
0df16ed7
GS		 1139 }
1140 else
a67e862a 1141 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS		 1142 break;
1143 case 'P':
1144 forbid_setid("-P");
3280af22 1145 PL_preprocess = TRUE;
6224f72b
GS		 1146 s++;
1147 goto reswitch;
1148 case 'S':
1149 forbid_setid("-S");
1150 dosearch = TRUE;
1151 s++;
1152 goto reswitch;
1153 case 'V':
3280af22
NIS		 1154 if (!PL_preambleav)
1155 PL_preambleav = newAV();
1156 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1157 if (*++s != ':') {
3280af22 1158 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1159#ifdef VMS
6b88bc9c 1160 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1161#else
3280af22 1162 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1163#endif
3280af22 1164 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1165# ifdef DEBUGGING
3280af22 1166 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1167# endif
6224f72b 1168# ifdef MULTIPLICITY
8f872242 1169 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1170# endif
4d1ff10f
AB		 1171# ifdef USE_5005THREADS
1172 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1173# endif
ac5e8965
JH		 1174# ifdef USE_ITHREADS
1175 sv_catpv(PL_Sv," USE_ITHREADS");
1176# endif
10cc9d2a
JH		 1177# ifdef USE_64_BIT_INT
1178 sv_catpv(PL_Sv," USE_64_BIT_INT");
1179# endif
1180# ifdef USE_64_BIT_ALL
1181 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH		 1182# endif
1183# ifdef USE_LONG_DOUBLE
1184 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1185# endif
53430762
JH		 1186# ifdef USE_LARGE_FILES
1187 sv_catpv(PL_Sv," USE_LARGE_FILES");
1188# endif
ac5e8965
JH		 1189# ifdef USE_SOCKS
1190 sv_catpv(PL_Sv," USE_SOCKS");
1191# endif
b363f7ed
GS		 1192# ifdef PERL_IMPLICIT_CONTEXT
1193 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1194# endif
1195# ifdef PERL_IMPLICIT_SYS
1196 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1197# endif
3280af22 1198 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1199
6224f72b
GS		 1200#if defined(LOCAL_PATCH_COUNT)
1201 if (LOCAL_PATCH_COUNT > 0) {
1202 int i;
3280af22 1203 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1204 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1205 if (PL_localpatches[i])
cea2e8a9 1206 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS		 1207 }
1208 }
1209#endif
cea2e8a9 1210 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS		 1211#ifdef __DATE__
1212# ifdef __TIME__
cea2e8a9 1213 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1214# else
cea2e8a9 1215 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS		 1216# endif
1217#endif
3280af22 1218 sv_catpv(PL_Sv, "; \
6224f72b 1219$\"=\"\\n \"; \
69fcd688
JH		 1220@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1221#ifdef __CYGWIN__
1222 sv_catpv(PL_Sv,"\
1223push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1224#endif
1225 sv_catpv(PL_Sv, "\
6224f72b
GS		 1226print \" \\%ENV:\\n @env\\n\" if @env; \
1227print \" \\@INC:\\n @INC\\n\";");
1228 }
1229 else {
3280af22
NIS		 1230 PL_Sv = newSVpv("config_vars(qw(",0);
1231 sv_catpv(PL_Sv, ++s);
1232 sv_catpv(PL_Sv, "))");
6224f72b
GS		 1233 s += strlen(s);
1234 }
3280af22 1235 av_push(PL_preambleav, PL_Sv);
6224f72b
GS		 1236 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1237 goto reswitch;
1238 case 'x':
3280af22 1239 PL_doextract = TRUE;
6224f72b
GS		 1240 s++;
1241 if (*s)
f4c556ac 1242 cddir = s;
6224f72b
GS		 1243 break;
1244 case 0:
1245 break;
1246 case '-':
1247 if (!*++s || isSPACE(*s)) {
1248 argc--,argv++;
1249 goto switch_end;
1250 }
1251 /* catch use of gnu style long options */
1252 if (strEQ(s, "version")) {
1253 s = "v";
1254 goto reswitch;
1255 }
1256 if (strEQ(s, "help")) {
1257 s = "h";
1258 goto reswitch;
1259 }
1260 s--;
1261 /* FALL THROUGH */
1262 default:
cea2e8a9 1263 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 1264 }
1265 }
6224f72b 1266 switch_end:
54310121 1267
f675dbe5
CB		 1268 if (
1269#ifndef SECURE_INTERNAL_GETENV
1270 !PL_tainting &&
1271#endif
cf756827 1272 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1273 {
cf756827 1274 char *popt = s;
74288ac8
GS		 1275 while (isSPACE(*s))
1276 s++;
317ea90d 1277 if (*s == '-' && *(s+1) == 'T') {
74288ac8 1278 PL_tainting = TRUE;
317ea90d
MS		 1279 PL_taint_warn = FALSE;
1280 }
74288ac8 1281 else {
cf756827 1282 char *popt_copy = Nullch;
74288ac8 1283 while (s && *s) {
4ea8f8fb 1284 char *d;
74288ac8
GS		 1285 while (isSPACE(*s))
1286 s++;
1287 if (*s == '-') {
1288 s++;
1289 if (isSPACE(*s))
1290 continue;
1291 }
4ea8f8fb 1292 d = s;
74288ac8
GS		 1293 if (!*s)
1294 break;
1c4db469 1295 if (!strchr("DIMUdmtw", *s))
cea2e8a9 1296 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 1297 while (++s && *s) {
1298 if (isSPACE(*s)) {
cf756827
GS		 1299 if (!popt_copy) {
1300 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1301 s = popt_copy + (s - popt);
1302 d = popt_copy + (d - popt);
1303 }
4ea8f8fb
MS		 1304 *s++ = '\0';
1305 break;
1306 }
1307 }
1c4db469 1308 if (*d == 't') {
317ea90d
MS		 1309 if( !PL_tainting ) {
1310 PL_taint_warn = TRUE;
1311 PL_tainting = TRUE;
1312 }
1c4db469
RGS		 1313 } else {
1314 moreswitches(d);
1315 }
6224f72b 1316 }
6224f72b
GS		 1317 }
1318 }
a0d0e21e 1319
317ea90d
MS		 1320 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1321 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1322 }
1323
6224f72b
GS		 1324 if (!scriptname)
1325 scriptname = argv[0];
3280af22 1326 if (PL_e_script) {
6224f72b
GS		 1327 argc++,argv--;
1328 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1329 }
1330 else if (scriptname == Nullch) {
1331#ifdef MSDOS
1332 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1333 moreswitches("h");
1334#endif
1335 scriptname = "-";
1336 }
1337
1338 init_perllib();
1339
1340 open_script(scriptname,dosearch,sv,&fdscript);
1341
1342 validate_suid(validarg, scriptname,fdscript);
1343
64ca3a65 1344#ifndef PERL_MICRO
0b5b802d
GS		 1345#if defined(SIGCHLD) || defined(SIGCLD)
1346 {
1347#ifndef SIGCHLD
1348# define SIGCHLD SIGCLD
1349#endif
1350 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1351 if (sigstate == SIG_IGN) {
1352 if (ckWARN(WARN_SIGNAL))
1353 Perl_warner(aTHX_ WARN_SIGNAL,
1354 "Can't ignore signal CHLD, forcing to default");
1355 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1356 }
1357 }
1358#endif
64ca3a65 1359#endif
0b5b802d 1360
bf4acbe4
GS		 1361#ifdef MACOS_TRADITIONAL
1362 if (PL_doextract || gMacPerl_AlwaysExtract) {
1363#else
f4c556ac 1364 if (PL_doextract) {
bf4acbe4 1365#endif
6224f72b 1366 find_beginning();
f4c556ac
GS		 1367 if (cddir && PerlDir_chdir(cddir) < 0)
1368 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1369
1370 }
6224f72b 1371
3280af22
NIS		 1372 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1373 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1374 CvUNIQUE_on(PL_compcv);
1375
1376 PL_comppad = newAV();
1377 av_push(PL_comppad, Nullsv);
1378 PL_curpad = AvARRAY(PL_comppad);
1379 PL_comppad_name = newAV();
1380 PL_comppad_name_fill = 0;
1381 PL_min_intro_pending = 0;
1382 PL_padix = 0;
4d1ff10f 1383#ifdef USE_5005THREADS
79cb57f6 1384 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS		 1385 PL_curpad[0] = (SV*)newAV();
1386 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1387 CvOWNER(PL_compcv) = 0;
1388 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1389 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1390#endif /* USE_5005THREADS */
6224f72b
GS		 1391
1392 comppadlist = newAV();
1393 AvREAL_off(comppadlist);
3280af22
NIS		 1394 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1395 av_store(comppadlist, 1, (SV*)PL_comppad);
1396 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1397
0c4f7ff0 1398 boot_core_PerlIO();
6224f72b 1399 boot_core_UNIVERSAL();
9a34ef1d 1400#ifndef PERL_MICRO
09bef843 1401 boot_core_xsutils();
9a34ef1d 1402#endif
6224f72b
GS		 1403
1404 if (xsinit)
acfe0abc 1405 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1406#ifndef PERL_MICRO
ed79a026 1407#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1408 init_os_extras();
6224f72b 1409#endif
64ca3a65 1410#endif
6224f72b 1411
29209bc5 1412#ifdef USE_SOCKS
1b9c9cf5
DH		 1413# ifdef HAS_SOCKS5_INIT
1414 socks5_init(argv[0]);
1415# else
29209bc5 1416 SOCKSinit(argv[0]);
1b9c9cf5 1417# endif
ac27b0f5 1418#endif
29209bc5 1419
6224f72b
GS		 1420 init_predump_symbols();
1421 /* init_postdump_symbols not currently designed to be called */
1422 /* more than once (ENV isn't cleared first, for example) */
1423 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1424 if (!PL_do_undump)
6224f72b
GS		 1425 init_postdump_symbols(argc,argv,env);
1426
1427 init_lexer();
1428
1429 /* now parse the script */
1430
91487cfc 1431 SETERRNO(0,SS$_NORMAL);
3280af22 1432 PL_error_count = 0;
bf4acbe4
GS		 1433#ifdef MACOS_TRADITIONAL
1434 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1435 if (PL_minus_c)
1436 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1437 else {
1438 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1439 MacPerl_MPWFileName(PL_origfilename));
1440 }
1441 }
1442#else
3280af22
NIS		 1443 if (yyparse() || PL_error_count) {
1444 if (PL_minus_c)
cea2e8a9 1445 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1446 else {
cea2e8a9 1447 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1448 PL_origfilename);
6224f72b
GS		 1449 }
1450 }
bf4acbe4 1451#endif
57843af0 1452 CopLINE_set(PL_curcop, 0);
3280af22
NIS		 1453 PL_curstash = PL_defstash;
1454 PL_preprocess = FALSE;
1455 if (PL_e_script) {
1456 SvREFCNT_dec(PL_e_script);
1457 PL_e_script = Nullsv;
6224f72b
GS		 1458 }
1459
8bfdd7d9
HS		 1460/*
1461 Not sure that this is still the right place to do this now that we
1462 no longer use PL_nrs. HVDS 2001/09/09
1463*/
864dbfa3 1464 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1465
3280af22 1466 if (PL_do_undump)
6224f72b
GS		 1467 my_unexec();
1468
57843af0
GS		 1469 if (isWARN_ONCE) {
1470 SAVECOPFILE(PL_curcop);
1471 SAVECOPLINE(PL_curcop);
3280af22 1472 gv_check(PL_defstash);
57843af0 1473 }
6224f72b
GS		 1474
1475 LEAVE;
1476 FREETMPS;
1477
1478#ifdef MYMALLOC
1479 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1480 dump_mstats("after compilation:");
1481#endif
1482
1483 ENTER;
3280af22 1484 PL_restartop = 0;
312caa8e 1485 return NULL;
6224f72b
GS		 1486}
1487
954c1994
GS		 1488/*
1489=for apidoc perl_run
1490
1491Tells a Perl interpreter to run. See L<perlembed>.
1492
1493=cut
1494*/
1495
6224f72b 1496int
0cb96387 1497perl_run(pTHXx)
6224f72b 1498{
6224f72b 1499 I32 oldscope;
14dd3ad8 1500 int ret = 0;
db36c5a1 1501 dJMPENV;
4d1ff10f 1502#ifdef USE_5005THREADS
cea2e8a9
GS		 1503 dTHX;
1504#endif
6224f72b 1505
3280af22 1506 oldscope = PL_scopestack_ix;
96e176bf
CL		 1507#ifdef VMS
1508 VMSISH_HUSHED = 0;
1509#endif
6224f72b 1510
14dd3ad8 1511#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1512 redo_body:
14dd3ad8
GS		 1513 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1514#else
1515 JMPENV_PUSH(ret);
1516#endif
6224f72b
GS		 1517 switch (ret) {
1518 case 1:
1519 cxstack_ix = -1; /* start context stack again */
312caa8e 1520 goto redo_body;
14dd3ad8
GS		 1521 case 0: /* normal completion */
1522#ifndef PERL_FLEXIBLE_EXCEPTIONS
1523 redo_body:
1524 run_body(oldscope);
1525#endif
1526 /* FALL THROUGH */
1527 case 2: /* my_exit() */
3280af22 1528 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1529 LEAVE;
1530 FREETMPS;
3280af22 1531 PL_curstash = PL_defstash;
3a1ee7e8 1532 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB		 1533 PL_endav && !PL_minus_c)
1534 call_list(oldscope, PL_endav);
6224f72b
GS		 1535#ifdef MYMALLOC
1536 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1537 dump_mstats("after execution: ");
1538#endif
14dd3ad8
GS		 1539 ret = STATUS_NATIVE_EXPORT;
1540 break;
6224f72b 1541 case 3:
312caa8e
CS		 1542 if (PL_restartop) {
1543 POPSTACK_TO(PL_mainstack);
1544 goto redo_body;
6224f72b 1545 }
bf49b057 1546 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1547 FREETMPS;
14dd3ad8
GS		 1548 ret = 1;
1549 break;
6224f72b
GS		 1550 }
1551
14dd3ad8
GS		 1552 JMPENV_POP;
1553 return ret;
312caa8e
CS		 1554}
1555
14dd3ad8 1556#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1557STATIC void *
14dd3ad8 1558S_vrun_body(pTHX_ va_list args)
312caa8e 1559{
312caa8e
CS		 1560 I32 oldscope = va_arg(args, I32);
1561
14dd3ad8
GS		 1562 return run_body(oldscope);
1563}
1564#endif
1565
1566
1567STATIC void *
1568S_run_body(pTHX_ I32 oldscope)
1569{
6224f72b 1570 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1571 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1572
3280af22 1573 if (!PL_restartop) {
6224f72b
GS		 1574 DEBUG_x(dump_all());
1575 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH		 1576 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1577 PTR2UV(thr)));
6224f72b 1578
3280af22 1579 if (PL_minus_c) {
bf4acbe4 1580#ifdef MACOS_TRADITIONAL
be708cc0 1581 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1582#else
bf49b057 1583 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1584#endif
6224f72b
GS		 1585 my_exit(0);
1586 }
3280af22 1587 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1588 sv_setiv(PL_DBsingle, 1);
3280af22
NIS		 1589 if (PL_initav)
1590 call_list(oldscope, PL_initav);
6224f72b
GS		 1591 }
1592
1593 /* do it */
1594
3280af22 1595 if (PL_restartop) {
533c011a 1596 PL_op = PL_restartop;
3280af22 1597 PL_restartop = 0;
cea2e8a9 1598 CALLRUNOPS(aTHX);
6224f72b 1599 }
3280af22
NIS		 1600 else if (PL_main_start) {
1601 CvDEPTH(PL_main_cv) = 1;
533c011a 1602 PL_op = PL_main_start;
cea2e8a9 1603 CALLRUNOPS(aTHX);
6224f72b
GS		 1604 }
1605
f6b3007c
JH		 1606 my_exit(0);
1607 /* NOTREACHED */
312caa8e 1608 return NULL;
6224f72b
GS		 1609}
1610
954c1994 1611/*
ccfc67b7
JH		 1612=head1 SV Manipulation Functions
1613
954c1994
GS		 1614=for apidoc p||get_sv
1615
1616Returns the SV of the specified Perl scalar. If C<create> is set and the
1617Perl variable does not exist then it will be created. If C<create> is not
1618set and the variable does not exist then NULL is returned.
1619
1620=cut
1621*/
1622
6224f72b 1623SV*
864dbfa3 1624Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS		 1625{
1626 GV *gv;
4d1ff10f 1627#ifdef USE_5005THREADS
6224f72b
GS		 1628 if (name[1] == '\0' && !isALPHA(name[0])) {
1629 PADOFFSET tmp = find_threadsv(name);
411caa50 1630 if (tmp != NOT_IN_PAD)
6224f72b 1631 return THREADSV(tmp);
6224f72b 1632 }
4d1ff10f 1633#endif /* USE_5005THREADS */
6224f72b
GS		 1634 gv = gv_fetchpv(name, create, SVt_PV);
1635 if (gv)
1636 return GvSV(gv);
1637 return Nullsv;
1638}
1639
954c1994 1640/*
ccfc67b7
JH		 1641=head1 Array Manipulation Functions
1642
954c1994
GS		 1643=for apidoc p||get_av
1644
1645Returns the AV of the specified Perl array. If C<create> is set and the
1646Perl variable does not exist then it will be created. If C<create> is not
1647set and the variable does not exist then NULL is returned.
1648
1649=cut
1650*/
1651
6224f72b 1652AV*
864dbfa3 1653Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS		 1654{
1655 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1656 if (create)
1657 return GvAVn(gv);
1658 if (gv)
1659 return GvAV(gv);
1660 return Nullav;
1661}
1662
954c1994 1663/*
ccfc67b7
JH		 1664=head1 Hash Manipulation Functions
1665
954c1994
GS		 1666=for apidoc p||get_hv
1667
1668Returns the HV of the specified Perl hash. If C<create> is set and the
1669Perl variable does not exist then it will be created. If C<create> is not
1670set and the variable does not exist then NULL is returned.
1671
1672=cut
1673*/
1674
6224f72b 1675HV*
864dbfa3 1676Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1677{
a0d0e21e
LW		 1678 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1679 if (create)
1680 return GvHVn(gv);
1681 if (gv)
1682 return GvHV(gv);
1683 return Nullhv;
1684}
1685
954c1994 1686/*
ccfc67b7
JH		 1687=head1 CV Manipulation Functions
1688
954c1994
GS		 1689=for apidoc p||get_cv
1690
1691Returns the CV of the specified Perl subroutine. If C<create> is set and
1692the Perl subroutine does not exist then it will be declared (which has the
1693same effect as saying C<sub name;>). If C<create> is not set and the
1694subroutine does not exist then NULL is returned.
1695
1696=cut
1697*/
1698
a0d0e21e 1699CV*
864dbfa3 1700Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW		 1701{
1702 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1703 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS		 1704 /* XXX this is probably not what they think they're getting.
1705 * It has the same effect as "sub name;", i.e. just a forward
1706 * declaration! */
8ebc5c01 1707 if (create && !GvCVu(gv))
774d564b 1708 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1709 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1710 Nullop,
a0d0e21e
LW		 1711 Nullop);
1712 if (gv)
8ebc5c01 1713 return GvCVu(gv);
a0d0e21e
LW		 1714 return Nullcv;
1715}
1716
79072805
LW		 1717/* Be sure to refetch the stack pointer after calling these routines. */
1718
954c1994 1719/*
ccfc67b7
JH		 1720
1721=head1 Callback Functions
1722
954c1994
GS		 1723=for apidoc p||call_argv
1724
1725Performs a callback to the specified Perl sub. See L<perlcall>.
1726
1727=cut
1728*/
1729
a0d0e21e 1730I32
864dbfa3 1731Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1732
8ac85365
NIS		 1733 /* See G_* flags in cop.h */
1734 /* null terminated arg list */
8990e307 1735{
a0d0e21e 1736 dSP;
8990e307 1737
924508f0 1738 PUSHMARK(SP);
a0d0e21e 1739 if (argv) {
8990e307 1740 while (*argv) {
a0d0e21e 1741 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW		 1742 argv++;
1743 }
a0d0e21e 1744 PUTBACK;
8990e307 1745 }
864dbfa3 1746 return call_pv(sub_name, flags);
8990e307
LW		 1747}
1748
954c1994
GS		 1749/*
1750=for apidoc p||call_pv
1751
1752Performs a callback to the specified Perl sub. See L<perlcall>.
1753
1754=cut
1755*/
1756
a0d0e21e 1757I32
864dbfa3 1758Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 1759 /* name of the subroutine */
1760 /* See G_* flags in cop.h */
a0d0e21e 1761{
864dbfa3 1762 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW		 1763}
1764
954c1994
GS		 1765/*
1766=for apidoc p||call_method
1767
1768Performs a callback to the specified Perl method. The blessed object must
1769be on the stack. See L<perlcall>.
1770
1771=cut
1772*/
1773
a0d0e21e 1774I32
864dbfa3 1775Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 1776 /* name of the subroutine */
1777 /* See G_* flags in cop.h */
a0d0e21e 1778{
968b3946 1779 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW		 1780}
1781
1782/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 1783/*
1784=for apidoc p||call_sv
1785
1786Performs a callback to the Perl sub whose name is in the SV. See
1787L<perlcall>.
1788
1789=cut
1790*/
1791
a0d0e21e 1792I32
864dbfa3 1793Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1794 /* See G_* flags in cop.h */
a0d0e21e 1795{
924508f0 1796 dSP;
a0d0e21e 1797 LOGOP myop; /* fake syntax tree node */
968b3946 1798 UNOP method_op;
aa689395 1799 I32 oldmark;
13689cfe 1800 volatile I32 retval = 0;
a0d0e21e 1801 I32 oldscope;
54310121 1802 bool oldcatch = CATCH_GET;
6224f72b 1803 int ret;
533c011a 1804 OP* oldop = PL_op;
db36c5a1 1805 dJMPENV;
1e422769 1806
a0d0e21e
LW		 1807 if (flags & G_DISCARD) {
1808 ENTER;
1809 SAVETMPS;
1810 }
1811
aa689395 1812 Zero(&myop, 1, LOGOP);
54310121 1813 myop.op_next = Nullop;
f51d4af5 1814 if (!(flags & G_NOARGS))
aa689395 1815 myop.op_flags |= OPf_STACKED;
54310121 1816 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1817 (flags & G_ARRAY) ? OPf_WANT_LIST :
1818 OPf_WANT_SCALAR);
462e5cf6 1819 SAVEOP();
533c011a 1820 PL_op = (OP*)&myop;
aa689395 1821
3280af22
NIS		 1822 EXTEND(PL_stack_sp, 1);
1823 *++PL_stack_sp = sv;
aa689395 1824 oldmark = TOPMARK;
3280af22 1825 oldscope = PL_scopestack_ix;
a0d0e21e 1826
3280af22 1827 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1828 /* Handle first BEGIN of -d. */
3280af22 1829 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 1830 /* Try harder, since this may have been a sighandler, thus
1831 * curstash may be meaningless. */
3280af22 1832 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1833 && !(flags & G_NODEBUG))
533c011a 1834 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1835
968b3946
GS		 1836 if (flags & G_METHOD) {
1837 Zero(&method_op, 1, UNOP);
1838 method_op.op_next = PL_op;
1839 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1840 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1841 PL_op = (OP*)&method_op;
968b3946
GS		 1842 }
1843
312caa8e 1844 if (!(flags & G_EVAL)) {
0cdb2077 1845 CATCH_SET(TRUE);
14dd3ad8 1846 call_body((OP*)&myop, FALSE);
312caa8e 1847 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1848 CATCH_SET(oldcatch);
312caa8e
CS		 1849 }
1850 else {
d78bda3d 1851 myop.op_other = (OP*)&myop;
3280af22 1852 PL_markstack_ptr--;
4633a7c4
LW		 1853 /* we're trying to emulate pp_entertry() here */
1854 {
c09156bb 1855 register PERL_CONTEXT *cx;
54310121 1856 I32 gimme = GIMME_V;
ac27b0f5 1857
4633a7c4
LW		 1858 ENTER;
1859 SAVETMPS;
ac27b0f5 1860
968b3946 1861 push_return(Nullop);
1d76a5c3 1862 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1863 PUSHEVAL(cx, 0, 0);
533c011a 1864 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1865
faef0170 1866 PL_in_eval = EVAL_INEVAL;
4633a7c4 1867 if (flags & G_KEEPERR)
faef0170 1868 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1869 else
38a03e6e 1870 sv_setpv(ERRSV,"");
4633a7c4 1871 }
3280af22 1872 PL_markstack_ptr++;
a0d0e21e 1873
14dd3ad8
GS		 1874#ifdef PERL_FLEXIBLE_EXCEPTIONS
1875 redo_body:
1876 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1877 (OP*)&myop, FALSE);
14dd3ad8
GS		 1878#else
1879 JMPENV_PUSH(ret);
1880#endif
6224f72b
GS		 1881 switch (ret) {
1882 case 0:
14dd3ad8
GS		 1883#ifndef PERL_FLEXIBLE_EXCEPTIONS
1884 redo_body:
1885 call_body((OP*)&myop, FALSE);
1886#endif
312caa8e
CS		 1887 retval = PL_stack_sp - (PL_stack_base + oldmark);
1888 if (!(flags & G_KEEPERR))
1889 sv_setpv(ERRSV,"");
a0d0e21e 1890 break;
6224f72b 1891 case 1:
f86702cc 1892 STATUS_ALL_FAILURE;
a0d0e21e 1893 /* FALL THROUGH */
6224f72b 1894 case 2:
a0d0e21e 1895 /* my_exit() was called */
3280af22 1896 PL_curstash = PL_defstash;
a0d0e21e 1897 FREETMPS;
14dd3ad8 1898 JMPENV_POP;
cc3604b1 1899 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1900 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1901 my_exit_jump();
a0d0e21e 1902 /* NOTREACHED */
6224f72b 1903 case 3:
3280af22 1904 if (PL_restartop) {
533c011a 1905 PL_op = PL_restartop;
3280af22 1906 PL_restartop = 0;
312caa8e 1907 goto redo_body;
a0d0e21e 1908 }
3280af22 1909 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1910 if (flags & G_ARRAY)
1911 retval = 0;
1912 else {
1913 retval = 1;
3280af22 1914 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1915 }
312caa8e 1916 break;
a0d0e21e 1917 }
a0d0e21e 1918
3280af22 1919 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW		 1920 SV **newsp;
1921 PMOP *newpm;
1922 I32 gimme;
c09156bb 1923 register PERL_CONTEXT *cx;
a0a2876f
LW		 1924 I32 optype;
1925
1926 POPBLOCK(cx,newpm);
1927 POPEVAL(cx);
1928 pop_return();
3280af22 1929 PL_curpm = newpm;
a0a2876f 1930 LEAVE;
a0d0e21e 1931 }
14dd3ad8 1932 JMPENV_POP;
a0d0e21e 1933 }
1e422769 1934
a0d0e21e 1935 if (flags & G_DISCARD) {
3280af22 1936 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 1937 retval = 0;
1938 FREETMPS;
1939 LEAVE;
1940 }
533c011a 1941 PL_op = oldop;
a0d0e21e
LW		 1942 return retval;
1943}
1944
14dd3ad8 1945#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1946STATIC void *
14dd3ad8 1947S_vcall_body(pTHX_ va_list args)
312caa8e
CS		 1948{
1949 OP *myop = va_arg(args, OP*);
1950 int is_eval = va_arg(args, int);
1951
14dd3ad8 1952 call_body(myop, is_eval);
312caa8e
CS		 1953 return NULL;
1954}
14dd3ad8 1955#endif
312caa8e
CS		 1956
1957STATIC void
14dd3ad8 1958S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1959{
312caa8e
CS		 1960 if (PL_op == myop) {
1961 if (is_eval)
f807eda9 1962 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1963 else
f807eda9 1964 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS		 1965 }
1966 if (PL_op)
cea2e8a9 1967 CALLRUNOPS(aTHX);
312caa8e
CS		 1968}
1969
6e72f9df 1970/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1971
954c1994
GS		 1972/*
1973=for apidoc p||eval_sv
1974
1975Tells Perl to C<eval> the string in the SV.
1976
1977=cut
1978*/
1979
a0d0e21e 1980I32
864dbfa3 1981Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1982
8ac85365 1983 /* See G_* flags in cop.h */
a0d0e21e 1984{
924508f0 1985 dSP;
a0d0e21e 1986 UNOP myop; /* fake syntax tree node */
8fa7f367 1987 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1988 volatile I32 retval = 0;
4633a7c4 1989 I32 oldscope;
6224f72b 1990 int ret;
533c011a 1991 OP* oldop = PL_op;
db36c5a1 1992 dJMPENV;
84902520 1993
4633a7c4
LW		 1994 if (flags & G_DISCARD) {
1995 ENTER;
1996 SAVETMPS;
1997 }
1998
462e5cf6 1999 SAVEOP();
533c011a
NIS		 2000 PL_op = (OP*)&myop;
2001 Zero(PL_op, 1, UNOP);
3280af22
NIS		 2002 EXTEND(PL_stack_sp, 1);
2003 *++PL_stack_sp = sv;
2004 oldscope = PL_scopestack_ix;
79072805 2005
4633a7c4
LW		 2006 if (!(flags & G_NOARGS))
2007 myop.op_flags = OPf_STACKED;
79072805 2008 myop.op_next = Nullop;
6e72f9df 2009 myop.op_type = OP_ENTEREVAL;
54310121 2010 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2011 (flags & G_ARRAY) ? OPf_WANT_LIST :
2012 OPf_WANT_SCALAR);
6e72f9df 2013 if (flags & G_KEEPERR)
2014 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2015
14dd3ad8 2016#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 2017 redo_body:
14dd3ad8 2018 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 2019 (OP*)&myop, TRUE);
14dd3ad8
GS		 2020#else
2021 JMPENV_PUSH(ret);
2022#endif
6224f72b
GS		 2023 switch (ret) {
2024 case 0:
14dd3ad8
GS		 2025#ifndef PERL_FLEXIBLE_EXCEPTIONS
2026 redo_body:
2027 call_body((OP*)&myop,TRUE);
2028#endif
312caa8e
CS		 2029 retval = PL_stack_sp - (PL_stack_base + oldmark);
2030 if (!(flags & G_KEEPERR))
2031 sv_setpv(ERRSV,"");
4633a7c4 2032 break;
6224f72b 2033 case 1:
f86702cc 2034 STATUS_ALL_FAILURE;
4633a7c4 2035 /* FALL THROUGH */
6224f72b 2036 case 2:
4633a7c4 2037 /* my_exit() was called */
3280af22 2038 PL_curstash = PL_defstash;
4633a7c4 2039 FREETMPS;
14dd3ad8 2040 JMPENV_POP;
cc3604b1 2041 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2042 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2043 my_exit_jump();
4633a7c4 2044 /* NOTREACHED */
6224f72b 2045 case 3:
3280af22 2046 if (PL_restartop) {
533c011a 2047 PL_op = PL_restartop;
3280af22 2048 PL_restartop = 0;
312caa8e 2049 goto redo_body;
4633a7c4 2050 }
3280af22 2051 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2052 if (flags & G_ARRAY)
2053 retval = 0;
2054 else {
2055 retval = 1;
3280af22 2056 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2057 }
312caa8e 2058 break;
4633a7c4
LW		 2059 }
2060
14dd3ad8 2061 JMPENV_POP;
4633a7c4 2062 if (flags & G_DISCARD) {
3280af22 2063 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2064 retval = 0;
2065 FREETMPS;
2066 LEAVE;
2067 }
533c011a 2068 PL_op = oldop;
4633a7c4
LW		 2069 return retval;
2070}
2071
954c1994
GS		 2072/*
2073=for apidoc p||eval_pv
2074
2075Tells Perl to C<eval> the given string and return an SV* result.
2076
2077=cut
2078*/
2079
137443ea 2080SV*
864dbfa3 2081Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2082{
2083 dSP;
2084 SV* sv = newSVpv(p, 0);
2085
864dbfa3 2086 eval_sv(sv, G_SCALAR);
137443ea 2087 SvREFCNT_dec(sv);
2088
2089 SPAGAIN;
2090 sv = POPs;
2091 PUTBACK;
2092
2d8e6c8d
GS		 2093 if (croak_on_error && SvTRUE(ERRSV)) {
2094 STRLEN n_a;
cea2e8a9 2095 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2096 }
137443ea 2097
2098 return sv;
2099}
2100
4633a7c4
LW		 2101/* Require a module. */
2102
954c1994 2103/*
ccfc67b7
JH		 2104=head1 Embedding Functions
2105
954c1994
GS		 2106=for apidoc p||require_pv
2107
7d3fb230
BS		 2108Tells Perl to C<require> the file named by the string argument. It is
2109analogous to the Perl code C<eval "require '$file'">. It's even
2110implemented that way; consider using Perl_load_module instead.
954c1994 2111
7d3fb230 2112=cut */
954c1994 2113
4633a7c4 2114void
864dbfa3 2115Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2116{
d3acc0f7
JP		 2117 SV* sv;
2118 dSP;
e788e7d3 2119 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP		 2120 PUTBACK;
2121 sv = sv_newmortal();
4633a7c4
LW		 2122 sv_setpv(sv, "require '");
2123 sv_catpv(sv, pv);
2124 sv_catpv(sv, "'");
864dbfa3 2125 eval_sv(sv, G_DISCARD);
d3acc0f7
JP		 2126 SPAGAIN;
2127 POPSTACK;
79072805
LW		 2128}
2129
79072805 2130void
864dbfa3 2131Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW		 2132{
2133 register GV *gv;
2134
155aba94 2135 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2136 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW		 2137}
2138
76e3520e 2139STATIC void
cea2e8a9 2140S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2141{
ab821d7f 2142 /* This message really ought to be max 23 lines.
75c72d73 2143 * Removed -h because the user already knows that option. Others? */
fb73857a 2144
76e3520e 2145 static char *usage_msg[] = {
fb73857a 2146"-0[octal] specify record separator (\\0, if no argument)",
2147"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2148"-C enable native wide character system interfaces",
1950ee41 2149"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS		 2150"-d[:debugger] run program under debugger",
2151"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2152"-e 'command' one line of program (several -e's allowed, omit programfile)",
2153"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2154"-i[extension] edit <> files in place (makes backup if extension supplied)",
2155"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2156"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS		 2157"-[mM][-]module execute `use/no module...' before executing program",
2158"-n assume 'while (<>) { ... }' loop around program",
2159"-p assume loop like -n but print line also, like sed",
2160"-P run program through C preprocessor before compilation",
2161"-s enable rudimentary parsing for switches after programfile",
2162"-S look for programfile using PATH environment variable",
2163"-T enable tainting checks",
2164"-u dump core after parsing program",
fb73857a 2165"-U allow unsafe operations",
aac3bd0d
GS		 2166"-v print version, subversion (includes VERY IMPORTANT perl info)",
2167"-V[:variable] print configuration summary (or a single Config.pm variable)",
2168"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS		 2169"-W enable all warnings",
2170"-X disable all warnings",
fb73857a 2171"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2172"\n",
2173NULL
2174};
76e3520e 2175 char **p = usage_msg;
fb73857a 2176
b0e47665
GS		 2177 PerlIO_printf(PerlIO_stdout(),
2178 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2179 name);
fb73857a 2180 while (*p)
b0e47665 2181 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW		 2182}
2183
79072805
LW		 2184/* This routine handles any switches that can be given during run */
2185
2186char *
864dbfa3 2187Perl_moreswitches(pTHX_ char *s)
79072805 2188{
ba210ebe 2189 STRLEN numlen;
c07a80fd 2190 U32 rschar;
79072805
LW		 2191
2192 switch (*s) {
2193 case '0':
a863c7d1 2194 {
53305cf1
NC		 2195 I32 flags = 0;
2196 numlen = 4;
2197 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2198 SvREFCNT_dec(PL_rs);
c07a80fd 2199 if (rschar & ~((U8)~0))
8bfdd7d9 2200 PL_rs = &PL_sv_undef;
c07a80fd 2201 else if (!rschar && numlen >= 2)
8bfdd7d9 2202 PL_rs = newSVpvn("", 0);
c07a80fd 2203 else {
2204 char ch = rschar;
8bfdd7d9 2205 PL_rs = newSVpvn(&ch, 1);
79072805
LW		 2206 }
2207 return s + numlen;
a863c7d1 2208 }
46487f74
GS		 2209 case 'C':
2210 PL_widesyscalls = TRUE;
2211 s++;
2212 return s;
2304df62 2213 case 'F':
3280af22 2214 PL_minus_F = TRUE;
ebce5377
RGS		 2215 PL_splitstr = ++s;
2216 while (*s && !isSPACE(*s)) ++s;
2217 *s = '\0';
2218 PL_splitstr = savepv(PL_splitstr);
2304df62 2219 return s;
79072805 2220 case 'a':
3280af22 2221 PL_minus_a = TRUE;
79072805
LW		 2222 s++;
2223 return s;
2224 case 'c':
3280af22 2225 PL_minus_c = TRUE;
79072805
LW		 2226 s++;
2227 return s;
2228 case 'd':
bbce6d69 2229 forbid_setid("-d");
4633a7c4 2230 s++;
70c94a19
RR		 2231 /* The following permits -d:Mod to accepts arguments following an =
2232 in the fashion that -MSome::Mod does. */
2233 if (*s == ':' || *s == '=') {
2234 char *start;
2235 SV *sv;
2236 sv = newSVpv("use Devel::", 0);
2237 start = ++s;
2238 /* We now allow -d:Module=Foo,Bar */
2239 while(isALNUM(*s) || *s==':') ++s;
2240 if (*s != '=')
2241 sv_catpv(sv, start);
2242 else {
2243 sv_catpvn(sv, start, s-start);
2244 sv_catpv(sv, " split(/,/,q{");
2245 sv_catpv(sv, ++s);
2246 sv_catpv(sv, "})");
2247 }
4633a7c4 2248 s += strlen(s);
70c94a19 2249 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2250 }
ed094faf 2251 if (!PL_perldb) {
3280af22 2252 PL_perldb = PERLDB_ALL;
a0d0e21e 2253 init_debugger();
ed094faf 2254 }
79072805
LW		 2255 return s;
2256 case 'D':
0453d815 2257 {
79072805 2258#ifdef DEBUGGING
bbce6d69 2259 forbid_setid("-D");
79072805 2260 if (isALPHA(s[1])) {
04932ac8 2261 /* if adding extra options, remember to update DEBUG_MASK */
1045810a 2262 static char debopts[] = "psltocPmfrxuLHXDSTRJ";
79072805
LW		 2263 char *d;
2264
93a17b20 2265 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2266 PL_debug |= 1 << (d - debopts);
79072805
LW		 2267 }
2268 else {
3280af22 2269 PL_debug = atoi(s+1);
79072805
LW		 2270 for (s++; isDIGIT(*s); s++) ;
2271 }
aea4f609 2272 PL_debug |= DEBUG_TOP_FLAG;
79072805 2273#else
0453d815
PM		 2274 if (ckWARN_d(WARN_DEBUGGING))
2275 Perl_warner(aTHX_ WARN_DEBUGGING,
2276 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2277 for (s++; isALNUM(*s); s++) ;
79072805
LW		 2278#endif
2279 /*SUPPRESS 530*/
2280 return s;
0453d815 2281 }
4633a7c4 2282 case 'h':
ac27b0f5 2283 usage(PL_origargv[0]);
6ad3d225 2284 PerlProc_exit(0);
79072805 2285 case 'i':
3280af22
NIS		 2286 if (PL_inplace)
2287 Safefree(PL_inplace);
2288 PL_inplace = savepv(s+1);
79072805 2289 /*SUPPRESS 530*/
3280af22 2290 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2291 if (*s) {
fb73857a 2292 *s++ = '\0';
7b8d334a
GS		 2293 if (*s == '-') /* Additional switches on #! line. */
2294 s++;
2295 }
fb73857a 2296 return s;
4e49a025 2297 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2298 forbid_setid("-I");
fb73857a 2299 ++s;
2300 while (*s && isSPACE(*s))
2301 ++s;
2302 if (*s) {
774d564b 2303 char *e, *p;
0df16ed7
GS		 2304 p = s;
2305 /* ignore trailing spaces (possibly followed by other switches) */
2306 do {
2307 for (e = p; *e && !isSPACE(*e); e++) ;
2308 p = e;
2309 while (isSPACE(*p))
2310 p++;
2311 } while (*p && *p != '-');
2312 e = savepvn(s, e-s);
9c8a64f0 2313 incpush(e, TRUE, TRUE);
0df16ed7
GS		 2314 Safefree(e);
2315 s = p;
2316 if (*s == '-')
2317 s++;
79072805
LW		 2318 }
2319 else
a67e862a 2320 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2321 return s;
79072805 2322 case 'l':
3280af22 2323 PL_minus_l = TRUE;
79072805 2324 s++;
7889fe52
NIS		 2325 if (PL_ors_sv) {
2326 SvREFCNT_dec(PL_ors_sv);
2327 PL_ors_sv = Nullsv;
2328 }
79072805 2329 if (isDIGIT(*s)) {
53305cf1 2330 I32 flags = 0;
7889fe52 2331 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC		 2332 numlen = 3 + (*s == '0');
2333 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 2334 s += numlen;
2335 }
2336 else {
8bfdd7d9 2337 if (RsPARA(PL_rs)) {
7889fe52
NIS		 2338 PL_ors_sv = newSVpvn("\n\n",2);
2339 }
2340 else {
8bfdd7d9 2341 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2342 }
79072805
LW		 2343 }
2344 return s;
1a30305b 2345 case 'M':
bbce6d69 2346 forbid_setid("-M"); /* XXX ? */
1a30305b 2347 /* FALL THROUGH */
2348 case 'm':
bbce6d69 2349 forbid_setid("-m"); /* XXX ? */
1a30305b 2350 if (*++s) {
a5f75d66 2351 char *start;
11343788 2352 SV *sv;
a5f75d66
AD		 2353 char *use = "use ";
2354 /* -M-foo == 'no foo' */
2355 if (*s == '-') { use = "no "; ++s; }
11343788 2356 sv = newSVpv(use,0);
a5f75d66 2357 start = s;
1a30305b 2358 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 2359 while(isALNUM(*s) || *s==':') ++s;
2360 if (*s != '=') {
11343788 2361 sv_catpv(sv, start);
c07a80fd 2362 if (*(start-1) == 'm') {
2363 if (*s != '\0')
cea2e8a9 2364 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2365 sv_catpv( sv, " ()");
c07a80fd 2366 }
2367 } else {
6df41af2 2368 if (s == start)
be98fb35
GS		 2369 Perl_croak(aTHX_ "Module name required with -%c option",
2370 s[-1]);
11343788
MB		 2371 sv_catpvn(sv, start, s-start);
2372 sv_catpv(sv, " split(/,/,q{");
2373 sv_catpv(sv, ++s);
2374 sv_catpv(sv, "})");
c07a80fd 2375 }
1a30305b 2376 s += strlen(s);
5c831c24 2377 if (!PL_preambleav)
3280af22
NIS		 2378 PL_preambleav = newAV();
2379 av_push(PL_preambleav, sv);
1a30305b 2380 }
2381 else
cea2e8a9 2382 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2383 return s;
79072805 2384 case 'n':
3280af22 2385 PL_minus_n = TRUE;
79072805
LW		 2386 s++;
2387 return s;
2388 case 'p':
3280af22 2389 PL_minus_p = TRUE;
79072805
LW		 2390 s++;
2391 return s;
2392 case 's':
bbce6d69 2393 forbid_setid("-s");
3280af22 2394 PL_doswitches = TRUE;
79072805
LW		 2395 s++;
2396 return s;
6537fe72
MS		 2397 case 't':
2398 if (!PL_tainting)
2399 Perl_croak(aTHX_ "Too late for \"-t\" option");
2400 s++;
2401 return s;
463ee0b2 2402 case 'T':
3280af22 2403 if (!PL_tainting)
cea2e8a9 2404 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW		 2405 s++;
2406 return s;
79072805 2407 case 'u':
bf4acbe4
GS		 2408#ifdef MACOS_TRADITIONAL
2409 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2410#endif
3280af22 2411 PL_do_undump = TRUE;
79072805
LW		 2412 s++;
2413 return s;
2414 case 'U':
3280af22 2415 PL_unsafe = TRUE;
79072805
LW		 2416 s++;
2417 return s;
2418 case 'v':
8e9464f1 2419#if !defined(DGUX)
b0e47665 2420 PerlIO_printf(PerlIO_stdout(),
d2560b70 2421 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2422 PL_patchlevel, ARCHNAME));
8e9464f1
JH		 2423#else /* DGUX */
2424/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2425 PerlIO_printf(PerlIO_stdout(),
2426 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2427 PerlIO_printf(PerlIO_stdout(),
2428 Perl_form(aTHX_ " built under %s at %s %s\n",
2429 OSNAME, __DATE__, __TIME__));
2430 PerlIO_printf(PerlIO_stdout(),
2431 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2432 OSVERS));
8e9464f1
JH		 2433#endif /* !DGUX */
2434
fb73857a 2435#if defined(LOCAL_PATCH_COUNT)
2436 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS		 2437 PerlIO_printf(PerlIO_stdout(),
2438 "\n(with %d registered patch%s, "
2439 "see perl -V for more detail)",
2440 (int)LOCAL_PATCH_COUNT,
2441 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2442#endif
1a30305b 2443
b0e47665 2444 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2445 "\n\nCopyright 1987-2002, Larry Wall\n");
eae9c151
JH		 2446#ifdef MACOS_TRADITIONAL
2447 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2448 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 2449 "maintained by Chris Nandor\n");
eae9c151 2450#endif
79072805 2451#ifdef MSDOS
b0e47665
GS		 2452 PerlIO_printf(PerlIO_stdout(),
2453 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 2454#endif
2455#ifdef DJGPP
b0e47665
GS		 2456 PerlIO_printf(PerlIO_stdout(),
2457 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2458 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2459#endif
79072805 2460#ifdef OS2
b0e47665
GS		 2461 PerlIO_printf(PerlIO_stdout(),
2462 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 2463 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2464#endif
79072805 2465#ifdef atarist
b0e47665
GS		 2466 PerlIO_printf(PerlIO_stdout(),
2467 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2468#endif
a3f9223b 2469#ifdef __BEOS__
b0e47665
GS		 2470 PerlIO_printf(PerlIO_stdout(),
2471 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2472#endif
1d84e8df 2473#ifdef MPE
b0e47665 2474 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2475 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
1d84e8df 2476#endif
9d116dd7 2477#ifdef OEMVS
b0e47665
GS		 2478 PerlIO_printf(PerlIO_stdout(),
2479 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2480#endif
495c5fdc 2481#ifdef __VOS__
b0e47665 2482 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2483 "Stratus VOS port by Paul_Green@stratus.com, 1997-2002\n");
495c5fdc 2484#endif
092bebab 2485#ifdef __OPEN_VM
b0e47665
GS		 2486 PerlIO_printf(PerlIO_stdout(),
2487 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2488#endif
a1a0e61e 2489#ifdef POSIX_BC
b0e47665
GS		 2490 PerlIO_printf(PerlIO_stdout(),
2491 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2492#endif
61ae2fbf 2493#ifdef __MINT__
b0e47665
GS		 2494 PerlIO_printf(PerlIO_stdout(),
2495 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2496#endif
f83d2536 2497#ifdef EPOC
b0e47665 2498 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2499 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 2500#endif
e1caacb4 2501#ifdef UNDER_CE
be3c0a43 2502 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
e1caacb4
JH		 2503 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2504 wce_hitreturn();
2505#endif
baed7233
DL		 2506#ifdef BINARY_BUILD_NOTICE
2507 BINARY_BUILD_NOTICE;
2508#endif
b0e47665
GS		 2509 PerlIO_printf(PerlIO_stdout(),
2510 "\n\
79072805 2511Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2512GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS		 2513Complete documentation for Perl, including FAQ lists, should be found on\n\
2514this system using `man perl' or `perldoc perl'. If you have access to the\n\
2515Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
6ad3d225 2516 PerlProc_exit(0);
79072805 2517 case 'w':
599cee73 2518 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2519 PL_dowarn |= G_WARN_ON;
599cee73
PM		 2520 s++;
2521 return s;
2522 case 'W':
ac27b0f5 2523 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS		 2524 if (!specialWARN(PL_compiling.cop_warnings))
2525 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2526 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM		 2527 s++;
2528 return s;
2529 case 'X':
ac27b0f5 2530 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS		 2531 if (!specialWARN(PL_compiling.cop_warnings))
2532 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2533 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW		 2534 s++;
2535 return s;
a0d0e21e 2536 case '*':
79072805
LW		 2537 case ' ':
2538 if (s[1] == '-') /* Additional switches on #! line. */
2539 return s+2;
2540 break;
a0d0e21e 2541 case '-':
79072805 2542 case 0:
51882d45 2543#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS		 2544 case '\r':
2545#endif
79072805
LW		 2546 case '\n':
2547 case '\t':
2548 break;
aa689395 2549#ifdef ALTERNATE_SHEBANG
2550 case 'S': /* OS/2 needs -S on "extproc" line. */
2551 break;
2552#endif
a0d0e21e 2553 case 'P':
3280af22 2554 if (PL_preprocess)
a0d0e21e
LW		 2555 return s+1;
2556 /* FALL THROUGH */
79072805 2557 default:
cea2e8a9 2558 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW		 2559 }
2560 return Nullch;
2561}
2562
2563/* compliments of Tom Christiansen */
2564
2565/* unexec() can be found in the Gnu emacs distribution */
ee580363 2566/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW		 2567
2568void
864dbfa3 2569Perl_my_unexec(pTHX)
79072805
LW		 2570{
2571#ifdef UNEXEC
46fc3d4c 2572 SV* prog;
2573 SV* file;
ee580363 2574 int status = 1;
79072805
LW		 2575 extern int etext;
2576
ee580363 2577 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2578 sv_catpv(prog, "/perl");
6b88bc9c 2579 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2580 sv_catpv(file, ".perldump");
79072805 2581
ee580363
GS		 2582 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2583 /* unexec prints msg to stderr in case of failure */
6ad3d225 2584 PerlProc_exit(status);
79072805 2585#else
a5f75d66
AD		 2586# ifdef VMS
2587# include <lib$routines.h>
2588 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2589# else
79072805 2590 ABORT(); /* for use with undump */
aa689395 2591# endif
a5f75d66 2592#endif
79072805
LW		 2593}
2594
cb68f92d
GS		 2595/* initialize curinterp */
2596STATIC void
cea2e8a9 2597S_init_interp(pTHX)
cb68f92d
GS		 2598{
2599
acfe0abc
GS		 2600#ifdef MULTIPLICITY
2601# define PERLVAR(var,type)
2602# define PERLVARA(var,n,type)
2603# if defined(PERL_IMPLICIT_CONTEXT)
2604# if defined(USE_5005THREADS)
2605# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2606# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS		 2607# else /* !USE_5005THREADS */
2608# define PERLVARI(var,type,init) aTHX->var = init;
2609# define PERLVARIC(var,type,init) aTHX->var = init;
2610# endif /* USE_5005THREADS */
3967c732 2611# else
acfe0abc
GS		 2612# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2613# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2614# endif
acfe0abc
GS		 2615# include "intrpvar.h"
2616# ifndef USE_5005THREADS
2617# include "thrdvar.h"
2618# endif
2619# undef PERLVAR
2620# undef PERLVARA
2621# undef PERLVARI
2622# undef PERLVARIC
2623#else
2624# define PERLVAR(var,type)
2625# define PERLVARA(var,n,type)
2626# define PERLVARI(var,type,init) PL_##var = init;
2627# define PERLVARIC(var,type,init) PL_##var = init;
2628# include "intrpvar.h"
2629# ifndef USE_5005THREADS
2630# include "thrdvar.h"
2631# endif
2632# undef PERLVAR
2633# undef PERLVARA
2634# undef PERLVARI
2635# undef PERLVARIC
cb68f92d
GS		 2636#endif
2637
cb68f92d
GS		 2638}
2639
76e3520e 2640STATIC void
cea2e8a9 2641S_init_main_stash(pTHX)
79072805 2642{
463ee0b2 2643 GV *gv;
6e72f9df 2644
3d47000e 2645
ac27b0f5 2646
3280af22 2647 PL_curstash = PL_defstash = newHV();
79cb57f6 2648 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW		 2649 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2650 SvREFCNT_dec(GvHV(gv));
3280af22 2651 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2652 SvREADONLY_on(gv);
3280af22
NIS		 2653 HvNAME(PL_defstash) = savepv("main");
2654 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2655 GvMULTI_on(PL_incgv);
2656 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2657 GvMULTI_on(PL_hintgv);
2658 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2659 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2660 GvMULTI_on(PL_errgv);
2661 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2662 GvMULTI_on(PL_replgv);
cea2e8a9 2663 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB		 2664 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2665 sv_setpvn(ERRSV, "", 0);
3280af22 2666 PL_curstash = PL_defstash;
11faa288 2667 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2668 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2669 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2670 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2671 /* We must init $/ before switches are processed. */
864dbfa3 2672 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW		 2673}
2674
76e3520e 2675STATIC void
cea2e8a9 2676S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2677{
1b24ed4b
MS		 2678 char *quote;
2679 char *code;
2680 char *cpp_discard_flag;
2681 char *perl;
2682
6c4ab083 2683 *fdscript = -1;
79072805 2684
3280af22
NIS		 2685 if (PL_e_script) {
2686 PL_origfilename = savepv("-e");
96436eeb 2687 }
6c4ab083
GS		 2688 else {
2689 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2690 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS		 2691
2692 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2693 char *s = scriptname + 8;
2694 *fdscript = atoi(s);
2695 while (isDIGIT(*s))
2696 s++;
2697 if (*s) {
2698 scriptname = savepv(s + 1);
3280af22
NIS		 2699 Safefree(PL_origfilename);
2700 PL_origfilename = scriptname;
6c4ab083
GS		 2701 }
2702 }
2703 }
2704
05ec9bb3 2705 CopFILE_free(PL_curcop);
57843af0 2706 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2707 if (strEQ(PL_origfilename,"-"))
79072805 2708 scriptname = "";
01f988be 2709 if (*fdscript >= 0) {
3280af22 2710 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2711# if defined(HAS_FCNTL) && defined(F_SETFD)
2712 if (PL_rsfp)
2713 /* ensure close-on-exec */
2714 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2715# endif
96436eeb 2716 }
3280af22 2717 else if (PL_preprocess) {
46fc3d4c 2718 char *cpp_cfg = CPPSTDIN;
79cb57f6 2719 SV *cpp = newSVpvn("",0);
46fc3d4c 2720 SV *cmd = NEWSV(0,0);
2721
2722 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2723 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2724 sv_catpv(cpp, cpp_cfg);
79072805 2725
1b24ed4b
MS		 2726# ifndef VMS
2727 sv_catpvn(sv, "-I", 2);
2728 sv_catpv(sv,PRIVLIB_EXP);
2729# endif
46fc3d4c 2730
14953ddc
MB		 2731 DEBUG_P(PerlIO_printf(Perl_debug_log,
2732 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2733 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS		 2734
2735# if defined(MSDOS) || defined(WIN32) || defined(VMS)
2736 quote = "\"";
2737# else
2738 quote = "'";
2739# endif
2740
2741# ifdef VMS
2742 cpp_discard_flag = "";
2743# else
2744 cpp_discard_flag = "-C";
2745# endif
2746
2747# ifdef OS2
2748 perl = os2_execname(aTHX);
2749# else
2750 perl = PL_origargv[0];
2751# endif
2752
2753
2754 /* This strips off Perl comments which might interfere with
2755 the C pre-processor, including #!. #line directives are
2756 deliberately stripped to avoid confusion with Perl's version
2757 of #line. FWP played some golf with it so it will fit
2758 into VMS's 255 character buffer.
2759 */
2760 if( PL_doextract )
2761 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2762 else
2763 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2764
2765 Perl_sv_setpvf(aTHX_ cmd, "\
2766%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2767 perl, quote, code, quote, scriptname, cpp,
2768 cpp_discard_flag, sv, CPPMINUS);
2769
3280af22 2770 PL_doextract = FALSE;
1b24ed4b
MS		 2771# ifdef IAMSUID /* actually, this is caught earlier */
2772 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2773# ifdef HAS_SETEUID
2774 (void)seteuid(PL_uid); /* musn't stay setuid root */
2775# else
2776# ifdef HAS_SETREUID
2777 (void)setreuid((Uid_t)-1, PL_uid);
2778# else
2779# ifdef HAS_SETRESUID
2780 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2781# else
2782 PerlProc_setuid(PL_uid);
2783# endif
2784# endif
2785# endif
b28d0864 2786 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2787 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805 2788 }
1b24ed4b 2789# endif /* IAMSUID */
0a6c758d 2790
1b24ed4b
MS		 2791 DEBUG_P(PerlIO_printf(Perl_debug_log,
2792 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS		 2793 SvPVX(cmd)));
2794
3280af22 2795 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c 2796 SvREFCNT_dec(cmd);
2797 SvREFCNT_dec(cpp);
79072805
LW		 2798 }
2799 else if (!*scriptname) {
bbce6d69 2800 forbid_setid("program input from stdin");
3280af22 2801 PL_rsfp = PerlIO_stdin();
79072805 2802 }
96436eeb 2803 else {
3280af22 2804 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS		 2805# if defined(HAS_FCNTL) && defined(F_SETFD)
2806 if (PL_rsfp)
2807 /* ensure close-on-exec */
2808 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2809# endif
96436eeb 2810 }
3280af22 2811 if (!PL_rsfp) {
1b24ed4b
MS		 2812# ifdef DOSUID
2813# ifndef IAMSUID /* in case script is not readable before setuid */
2814 if (PL_euid &&
2815 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2816 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2817 {
2818 /* try again */
2819 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2820 BIN_EXP, (int)PERL_REVISION,
2821 (int)PERL_VERSION,
2822 (int)PERL_SUBVERSION), PL_origargv);
2823 Perl_croak(aTHX_ "Can't do setuid\n");
2824 }
2825# endif
2826# endif
2827# ifdef IAMSUID
2828 errno = EPERM;
2829 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2830 Strerror(errno));
2831# else
2832 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2833 CopFILE(PL_curcop), Strerror(errno));
2834# endif
13281fa4 2835 }
79072805 2836}
8d063cd8 2837
7b89560d
JH		 2838/* Mention
2839 * I_SYSSTATVFS HAS_FSTATVFS
2840 * I_SYSMOUNT
c890dc6c 2841 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 2842 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2843 * here so that metaconfig picks them up. */
2844
104d25b7 2845#ifdef IAMSUID
864dbfa3 2846STATIC int
e688b231 2847S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2848{
0545a864
JH		 2849 int check_okay = 0; /* able to do all the required sys/libcalls */
2850 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2851/*
ad27e871 2852 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2853 * fstatvfs() is UNIX98.
0545a864 2854 * fstatfs() is 4.3 BSD.
ad27e871 2855 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH		 2856 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2857 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH		 2858 */
2859
6439433f
JH		 2860#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2861
2862# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2863 defined(HAS_FSTATVFS)
2864# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2865 struct statvfs stfs;
6439433f 2866
104d25b7
JH		 2867 check_okay = fstatvfs(fd, &stfs) == 0;
2868 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2869# endif /* fstatvfs */
ac27b0f5 2870
6439433f
JH		 2871# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2872 defined(PERL_MOUNT_NOSUID) && \
2873 defined(HAS_FSTATFS) && \
2874 defined(HAS_STRUCT_STATFS) && \
2875 defined(HAS_STRUCT_STATFS_F_FLAGS)
2876# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2877 struct statfs stfs;
6439433f 2878
104d25b7 2879 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2880 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH		 2881# endif /* fstatfs */
2882
2883# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2884 defined(PERL_MOUNT_NOSUID) && \
2885 defined(HAS_FSTAT) && \
2886 defined(HAS_USTAT) && \
2887 defined(HAS_GETMNT) && \
2888 defined(HAS_STRUCT_FS_DATA) && \
2889 defined(NOSTAT_ONE)
2890# define FD_ON_NOSUID_CHECK_OKAY
0545a864 2891 struct stat fdst;
6439433f 2892
0545a864 2893 if (fstat(fd, &fdst) == 0) {
6439433f
JH		 2894 struct ustat us;
2895 if (ustat(fdst.st_dev, &us) == 0) {
2896 struct fs_data fsd;
2897 /* NOSTAT_ONE here because we're not examining fields which
2898 * vary between that case and STAT_ONE. */
ad27e871 2899 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH		 2900 size_t cmplen = sizeof(us.f_fname);
2901 if (sizeof(fsd.fd_req.path) < cmplen)
2902 cmplen = sizeof(fsd.fd_req.path);
2903 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2904 fdst.st_dev == fsd.fd_req.dev) {
2905 check_okay = 1;
2906 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2907 }
2908 }
2909 }
2910 }
0545a864 2911 }
6439433f
JH		 2912# endif /* fstat+ustat+getmnt */
2913
2914# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2915 defined(HAS_GETMNTENT) && \
2916 defined(HAS_HASMNTOPT) && \
2917 defined(MNTOPT_NOSUID)
2918# define FD_ON_NOSUID_CHECK_OKAY
2919 FILE *mtab = fopen("/etc/mtab", "r");
2920 struct mntent *entry;
2921 struct stat stb, fsb;
104d25b7
JH		 2922
2923 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH		 2924 while (entry = getmntent(mtab)) {
2925 if (stat(entry->mnt_dir, &fsb) == 0
2926 && fsb.st_dev == stb.st_dev)
2927 {
2928 /* found the filesystem */
2929 check_okay = 1;
2930 if (hasmntopt(entry, MNTOPT_NOSUID))
2931 on_nosuid = 1;
2932 break;
2933 } /* A single fs may well fail its stat(). */
2934 }
104d25b7
JH		 2935 }
2936 if (mtab)
6439433f
JH		 2937 fclose(mtab);
2938# endif /* getmntent+hasmntopt */
0545a864 2939
ac27b0f5 2940 if (!check_okay)
0545a864 2941 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH		 2942 return on_nosuid;
2943}
2944#endif /* IAMSUID */
2945
76e3520e 2946STATIC void
cea2e8a9 2947S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2948{
155aba94 2949#ifdef IAMSUID
96436eeb 2950 int which;
155aba94 2951#endif
96436eeb 2952
13281fa4
LW		 2953 /* do we need to emulate setuid on scripts? */
2954
2955 /* This code is for those BSD systems that have setuid #! scripts disabled
2956 * in the kernel because of a security problem. Merely defining DOSUID
2957 * in perl will not fix that problem, but if you have disabled setuid
2958 * scripts in the kernel, this will attempt to emulate setuid and setgid
2959 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW		 2960 * root version must be called suidperl or sperlN.NNN. If regular perl
2961 * discovers that it has opened a setuid script, it calls suidperl with
2962 * the same argv that it had. If suidperl finds that the script it has
2963 * just opened is NOT setuid root, it sets the effective uid back to the
2964 * uid. We don't just make perl setuid root because that loses the
2965 * effective uid we had before invoking perl, if it was different from the
2966 * uid.
13281fa4
LW		 2967 *
2968 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2969 * be defined in suidperl only. suidperl must be setuid root. The
2970 * Configure script will set this up for you if you want it.
2971 */
a687059c 2972
13281fa4 2973#ifdef DOSUID
6e72f9df 2974 char *s, *s2;
a0d0e21e 2975
b28d0864 2976 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2977 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2978 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2979 I32 len;
2d8e6c8d 2980 STRLEN n_a;
13281fa4 2981
a687059c 2982#ifdef IAMSUID
fe14fcc3 2983#ifndef HAS_SETREUID
a687059c
LW		 2984 /* On this access check to make sure the directories are readable,
2985 * there is actually a small window that the user could use to make
2986 * filename point to an accessible directory. So there is a faint
2987 * chance that someone could execute a setuid script down in a
2988 * non-accessible directory. I don't know what to do about that.
2989 * But I don't think it's too important. The manual lies when
2990 * it says access() is useful in setuid programs.
2991 */
cc49e20b 2992 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2993 Perl_croak(aTHX_ "Permission denied");
a687059c
LW		 2994#else
2995 /* If we can swap euid and uid, then we can determine access rights
2996 * with a simple stat of the file, and then compare device and
2997 * inode to make sure we did stat() on the same file we opened.
2998 * Then we just have to make sure he or she can execute it.
2999 */
3000 {
3001 struct stat tmpstatbuf;
3002
85e6fe83
LW		 3003 if (
3004#ifdef HAS_SETREUID
b28d0864 3005 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW		 3006#else
3007# if HAS_SETRESUID
b28d0864 3008 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3009# endif
85e6fe83 3010#endif
b28d0864 3011 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3012 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3013 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3014 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3015#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3016 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3017 Perl_croak(aTHX_ "Permission denied");
104d25b7 3018#endif
b28d0864
NIS		 3019 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3020 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3021 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3022 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3023 }
85e6fe83
LW		 3024 if (
3025#ifdef HAS_SETREUID
b28d0864 3026 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW		 3027#else
3028# if defined(HAS_SETRESUID)
b28d0864 3029 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3030# endif
85e6fe83 3031#endif
b28d0864 3032 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3033 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3034 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3035 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3036 }
fe14fcc3 3037#endif /* HAS_SETREUID */
a687059c
LW		 3038#endif /* IAMSUID */
3039
b28d0864 3040 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3041 Perl_croak(aTHX_ "Permission denied");
b28d0864 3042 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3043 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3044 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3045 CopLINE_inc(PL_curcop);
6b88bc9c 3046 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3047 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3048 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3049 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3050 if (*s == ' ') s++;
45d8adaa 3051 while (!isSPACE(*s)) s++;
2d8e6c8d 3052 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df 3053 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3054 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3055 Perl_croak(aTHX_ "Not a perl script");
a687059c 3056 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW		 3057 /*
3058 * #! arg must be what we saw above. They can invoke it by
3059 * mentioning suidperl explicitly, but they may not add any strange
3060 * arguments beyond what #! says if they do invoke suidperl that way.
3061 */
3062 len = strlen(validarg);
3063 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3064 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3065 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW		 3066
3067#ifndef IAMSUID
b28d0864
NIS		 3068 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3069 PL_euid == PL_statbuf.st_uid)
3070 if (!PL_do_undump)
cea2e8a9 3071 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3072FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3073#endif /* IAMSUID */
13281fa4 3074
b28d0864
NIS		 3075 if (PL_euid) { /* oops, we're not the setuid root perl */
3076 (void)PerlIO_close(PL_rsfp);
13281fa4 3077#ifndef IAMSUID
46fc3d4c 3078 /* try again */
a7cb1f99 3079 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3080 (int)PERL_REVISION, (int)PERL_VERSION,
3081 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3082#endif
cea2e8a9 3083 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW		 3084 }
3085
b28d0864 3086 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3087#ifdef HAS_SETEGID
b28d0864 3088 (void)setegid(PL_statbuf.st_gid);
a687059c 3089#else
fe14fcc3 3090#ifdef HAS_SETREGID
b28d0864 3091 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW		 3092#else
3093#ifdef HAS_SETRESGID
b28d0864 3094 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3095#else
b28d0864 3096 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW		 3097#endif
3098#endif
85e6fe83 3099#endif
b28d0864 3100 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3101 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3102 }
b28d0864
NIS		 3103 if (PL_statbuf.st_mode & S_ISUID) {
3104 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3105#ifdef HAS_SETEUID
b28d0864 3106 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3107#else
fe14fcc3 3108#ifdef HAS_SETREUID
b28d0864 3109 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW		 3110#else
3111#ifdef HAS_SETRESUID
b28d0864 3112 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3113#else
b28d0864 3114 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW		 3115#endif
3116#endif
85e6fe83 3117#endif
b28d0864 3118 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3119 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3120 }
b28d0864 3121 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3122#ifdef HAS_SETEUID
b28d0864 3123 (void)seteuid((Uid_t)PL_uid);
a687059c 3124#else
fe14fcc3 3125#ifdef HAS_SETREUID
b28d0864 3126 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3127#else
85e6fe83 3128#ifdef HAS_SETRESUID
b28d0864 3129 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3130#else
b28d0864 3131 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3132#endif
a687059c
LW		 3133#endif
3134#endif
b28d0864 3135 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3136 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3137 }
748a9306 3138 init_ids();
b28d0864 3139 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3140 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW		 3141 }
3142#ifdef IAMSUID
6b88bc9c 3143 else if (PL_preprocess)
cea2e8a9 3144 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3145 else if (fdscript >= 0)
cea2e8a9 3146 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3147 else
cea2e8a9 3148 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb 3149
3150 /* We absolutely must clear out any saved ids here, so we */
3151 /* exec the real perl, substituting fd script for scriptname. */
3152 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS		 3153 PerlIO_rewind(PL_rsfp);
3154 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS		 3155 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3156 if (!PL_origargv[which])
cea2e8a9
GS		 3157 Perl_croak(aTHX_ "Permission denied");
3158 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3159 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3160#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3161 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3162#endif
a7cb1f99 3163 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS		 3164 (int)PERL_REVISION, (int)PERL_VERSION,
3165 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3166 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3167#endif /* IAMSUID */
a687059c 3168#else /* !DOSUID */
3280af22 3169 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3170#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS		 3171 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3172 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3173 ||
b28d0864 3174 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3175 )
b28d0864 3176 if (!PL_do_undump)
cea2e8a9 3177 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW		 3178FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3179#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3180 /* not set-id, must be wrapped */
a687059c 3181 }
13281fa4 3182#endif /* DOSUID */
79072805 3183}
13281fa4 3184
76e3520e 3185STATIC void
cea2e8a9 3186S_find_beginning(pTHX)
79072805 3187{
6e72f9df 3188 register char *s, *s2;
33b78306
LW		 3189
3190 /* skip forward in input to the real script? */
3191
bbce6d69 3192 forbid_setid("-x");
bf4acbe4 3193#ifdef MACOS_TRADITIONAL
084592ab 3194 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3195
bf4acbe4
GS		 3196 while (PL_doextract || gMacPerl_AlwaysExtract) {
3197 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3198 if (!gMacPerl_AlwaysExtract)
3199 Perl_croak(aTHX_ "No Perl script found in input\n");
3200
3201 if (PL_doextract) /* require explicit override ? */
3202 if (!OverrideExtract(PL_origfilename))
3203 Perl_croak(aTHX_ "User aborted script\n");
3204 else
3205 PL_doextract = FALSE;
3206
3207 /* Pater peccavi, file does not have #! */
3208 PerlIO_rewind(PL_rsfp);
ac27b0f5 3209
bf4acbe4
GS		 3210 break;
3211 }
3212#else
3280af22
NIS		 3213 while (PL_doextract) {
3214 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3215 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3216#endif
4f0c37ba
IZ		 3217 s2 = s;
3218 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS		 3219 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3220 PL_doextract = FALSE;
6e72f9df 3221 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3222 s2 = s;
3223 while (*s == ' ' || *s == '\t') s++;
3224 if (*s++ == '-') {
3225 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3226 if (strnEQ(s2-4,"perl",4))
3227 /*SUPPRESS 530*/
155aba94
GS		 3228 while ((s = moreswitches(s)))
3229 ;
33b78306 3230 }
95e8664e
CN		 3231#ifdef MACOS_TRADITIONAL
3232 break;
3233#endif
83025b21
LW		 3234 }
3235 }
3236}
3237
afe37c7d 3238
76e3520e 3239STATIC void
cea2e8a9 3240S_init_ids(pTHX)
352d5a3a 3241{
d8eceb89
JH		 3242 PL_uid = PerlProc_getuid();
3243 PL_euid = PerlProc_geteuid();
3244 PL_gid = PerlProc_getgid();
3245 PL_egid = PerlProc_getegid();
748a9306 3246#ifdef VMS
b28d0864
NIS		 3247 PL_uid |= PL_gid << 16;
3248 PL_euid |= PL_egid << 16;
748a9306 3249#endif
3280af22 3250 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3251}
79072805 3252
76e3520e 3253STATIC void
cea2e8a9 3254S_forbid_setid(pTHX_ char *s)
bbce6d69 3255{
3280af22 3256 if (PL_euid != PL_uid)
cea2e8a9 3257 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3258 if (PL_egid != PL_gid)
cea2e8a9 3259 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69 3260}
3261
1ee4443e
IZ		 3262void
3263Perl_init_debugger(pTHX)
748a9306 3264{
1ee4443e
IZ		 3265 HV *ostash = PL_curstash;
3266
3280af22
NIS		 3267 PL_curstash = PL_debstash;
3268 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3269 AvREAL_off(PL_dbargs);
3270 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3271 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3272 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3273 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3274 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3275 sv_setiv(PL_DBsingle, 0);
3280af22 3276 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3277 sv_setiv(PL_DBtrace, 0);
3280af22 3278 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3279 sv_setiv(PL_DBsignal, 0);
1ee4443e 3280 PL_curstash = ostash;
352d5a3a
LW		 3281}
3282
2ce36478
SM		 3283#ifndef STRESS_REALLOC
3284#define REASONABLE(size) (size)
3285#else
3286#define REASONABLE(size) (1) /* unreasonable */
3287#endif
3288
11343788 3289void
cea2e8a9 3290Perl_init_stacks(pTHX)
79072805 3291{
e336de0d 3292 /* start with 128-item stack and 8K cxstack */
3280af22 3293 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3294 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 3295 PL_curstackinfo->si_type = PERLSI_MAIN;
3296 PL_curstack = PL_curstackinfo->si_stack;
3297 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3298
3280af22
NIS		 3299 PL_stack_base = AvARRAY(PL_curstack);
3300 PL_stack_sp = PL_stack_base;
3301 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3302
3280af22
NIS		 3303 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3304 PL_tmps_floor = -1;
3305 PL_tmps_ix = -1;
3306 PL_tmps_max = REASONABLE(128);
8990e307 3307
3280af22
NIS		 3308 New(54,PL_markstack,REASONABLE(32),I32);
3309 PL_markstack_ptr = PL_markstack;
3310 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3311
ce2f7c3b 3312 SET_MARK_OFFSET;
e336de0d 3313
3280af22
NIS		 3314 New(54,PL_scopestack,REASONABLE(32),I32);
3315 PL_scopestack_ix = 0;
3316 PL_scopestack_max = REASONABLE(32);
79072805 3317
3280af22
NIS		 3318 New(54,PL_savestack,REASONABLE(128),ANY);
3319 PL_savestack_ix = 0;
3320 PL_savestack_max = REASONABLE(128);
79072805 3321
3280af22
NIS		 3322 New(54,PL_retstack,REASONABLE(16),OP*);
3323 PL_retstack_ix = 0;
3324 PL_retstack_max = REASONABLE(16);
378cc40b 3325}
33b78306 3326
2ce36478
SM		 3327#undef REASONABLE
3328
76e3520e 3329STATIC void
cea2e8a9 3330S_nuke_stacks(pTHX)
6e72f9df 3331{
3280af22
NIS		 3332 while (PL_curstackinfo->si_next)
3333 PL_curstackinfo = PL_curstackinfo->si_next;
3334 while (PL_curstackinfo) {
3335 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3336 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 3337 Safefree(PL_curstackinfo->si_cxstack);
3338 Safefree(PL_curstackinfo);
3339 PL_curstackinfo = p;
e336de0d 3340 }
3280af22
NIS		 3341 Safefree(PL_tmps_stack);
3342 Safefree(PL_markstack);
3343 Safefree(PL_scopestack);
3344 Safefree(PL_savestack);
3345 Safefree(PL_retstack);
378cc40b 3346}
33b78306 3347
76e3520e 3348STATIC void
cea2e8a9 3349S_init_lexer(pTHX)
8990e307 3350{
06039172 3351 PerlIO *tmpfp;
3280af22
NIS		 3352 tmpfp = PL_rsfp;
3353 PL_rsfp = Nullfp;
3354 lex_start(PL_linestr);
3355 PL_rsfp = tmpfp;
79cb57f6 3356 PL_subname = newSVpvn("main",4);
8990e307
LW		 3357}
3358
76e3520e 3359STATIC void
cea2e8a9 3360S_init_predump_symbols(pTHX)
45d8adaa 3361{
93a17b20 3362 GV *tmpgv;
af8c498a 3363 IO *io;
79072805 3364
864dbfa3 3365 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS		 3366 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3367 GvMULTI_on(PL_stdingv);
af8c498a 3368 io = GvIOp(PL_stdingv);
a04651f4 3369 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3370 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3371 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3372 GvMULTI_on(tmpgv);
af8c498a 3373 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3374
85e6fe83 3375 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3376 GvMULTI_on(tmpgv);
af8c498a 3377 io = GvIOp(tmpgv);
a04651f4 3378 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3379 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3380 setdefout(tmpgv);
adbc6bb1 3381 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3382 GvMULTI_on(tmpgv);
af8c498a 3383 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3384
bf49b057
GS		 3385 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3386 GvMULTI_on(PL_stderrgv);
3387 io = GvIOp(PL_stderrgv);
a04651f4 3388 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3389 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3390 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3391 GvMULTI_on(tmpgv);
af8c498a 3392 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3393
3280af22 3394 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3395
bf4acbe4
GS		 3396 if (PL_osname)
3397 Safefree(PL_osname);
3398 PL_osname = savepv(OSNAME);
79072805 3399}
33b78306 3400
a11ec5a9
RGS		 3401void
3402Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
33b78306 3403{
79072805 3404 char *s;
79072805 3405 argc--,argv++; /* skip name of script */
3280af22 3406 if (PL_doswitches) {
79072805
LW		 3407 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3408 if (!argv[0][1])
3409 break;
379d538a 3410 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 3411 argc--,argv++;
3412 break;
3413 }
155aba94 3414 if ((s = strchr(argv[0], '='))) {
79072805 3415 *s++ = '\0';
85e6fe83 3416 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW		 3417 }
3418 else
85e6fe83 3419 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3420 }
79072805 3421 }
a11ec5a9
RGS		 3422 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3423 GvMULTI_on(PL_argvgv);
3424 (void)gv_AVadd(PL_argvgv);
3425 av_clear(GvAVn(PL_argvgv));
3426 for (; argc > 0; argc--,argv++) {
3427 SV *sv = newSVpv(argv[0],0);
3428 av_push(GvAVn(PL_argvgv),sv);
3429 if (PL_widesyscalls)
3430 (void)sv_utf8_decode(sv);
3431 }
3432 }
3433}
3434
04fee9b5
NIS		 3435#ifdef HAS_PROCSELFEXE
3436/* This is a function so that we don't hold on to MAXPATHLEN
8338e367 3437 bytes of stack longer than necessary
04fee9b5
NIS		 3438 */
3439STATIC void
3440S_procself_val(pTHX_ SV *sv, char *arg0)
3441{
3442 char buf[MAXPATHLEN];
d13a6521 3443 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
04fee9b5
NIS		 3444 if (len > 0) {
3445 sv_setpvn(sv,buf,len);
3446 }
3447 else {
3448 sv_setpv(sv,arg0);
3449 }
3450}
3451#endif /* HAS_PROCSELFEXE */
3452
a11ec5a9
RGS		 3453STATIC void
3454S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3455{
3456 char *s;
3457 SV *sv;
3458 GV* tmpgv;
a11ec5a9 3459
3280af22
NIS		 3460 PL_toptarget = NEWSV(0,0);
3461 sv_upgrade(PL_toptarget, SVt_PVFM);
3462 sv_setpvn(PL_toptarget, "", 0);
3463 PL_bodytarget = NEWSV(0,0);
3464 sv_upgrade(PL_bodytarget, SVt_PVFM);
3465 sv_setpvn(PL_bodytarget, "", 0);
3466 PL_formtarget = PL_bodytarget;
79072805 3467
bbce6d69 3468 TAINT;
a11ec5a9
RGS		 3469
3470 init_argv_symbols(argc,argv);
3471
155aba94 3472 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
bf4acbe4
GS		 3473#ifdef MACOS_TRADITIONAL
3474 /* $0 is not majick on a Mac */
3475 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3476#else
3280af22 3477 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 3478 magicname("0", "0", 1);
bf4acbe4 3479#endif