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use sysconf(_SC_CLK_TCK) for times()
[perl5.git] / perl.c
CommitLineData
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1/* perl.c
2 *
be3c0a43 3 * Copyright (c) 1987-2002 Larry Wall
a687059c 4 *
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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 *
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8 */
9
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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
011f1a1a
JH
19#ifdef NETWARE
20#include "nwutil.h"
21char *nw_get_sitelib(const char *pl);
22#endif
23
df5cef82 24/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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LW
25#ifdef I_UNISTD
26#include <unistd.h>
27#endif
a0d0e21e 28
5311654c
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29#ifdef __BEOS__
30# define HZ 1000000
31#endif
32
33#ifndef HZ
34# ifdef CLK_TCK
35# define HZ CLK_TCK
36# else
37# define HZ 60
38# endif
39#endif
40
7114a2d2 41#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 42char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
43#endif
44
acfe0abc 45static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 46
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LW
47#ifdef IAMSUID
48#ifndef DOSUID
49#define DOSUID
50#endif
51#endif
378cc40b 52
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53#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
54#ifdef DOSUID
55#undef DOSUID
56#endif
57#endif
8d063cd8 58
4d1ff10f 59#if defined(USE_5005THREADS)
06d86050
GS
60# define INIT_TLS_AND_INTERP \
61 STMT_START { \
62 if (!PL_curinterp) { \
63 PERL_SET_INTERP(my_perl); \
64 INIT_THREADS; \
65 ALLOC_THREAD_KEY; \
66 } \
67 } STMT_END
68#else
69# if defined(USE_ITHREADS)
70# define INIT_TLS_AND_INTERP \
71 STMT_START { \
72 if (!PL_curinterp) { \
73 PERL_SET_INTERP(my_perl); \
74 INIT_THREADS; \
75 ALLOC_THREAD_KEY; \
534825c4
GS
76 PERL_SET_THX(my_perl); \
77 OP_REFCNT_INIT; \
78 } \
79 else { \
80 PERL_SET_THX(my_perl); \
06d86050 81 } \
06d86050
GS
82 } STMT_END
83# else
84# define INIT_TLS_AND_INTERP \
85 STMT_START { \
86 if (!PL_curinterp) { \
87 PERL_SET_INTERP(my_perl); \
88 } \
89 PERL_SET_THX(my_perl); \
90 } STMT_END
91# endif
92#endif
93
32e30700
GS
94#ifdef PERL_IMPLICIT_SYS
95PerlInterpreter *
7766f137
GS
96perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
97 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
98 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
99 struct IPerlDir* ipD, struct IPerlSock* ipS,
100 struct IPerlProc* ipP)
101{
102 PerlInterpreter *my_perl;
32e30700
GS
103 /* New() needs interpreter, so call malloc() instead */
104 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 105 INIT_TLS_AND_INTERP;
32e30700
GS
106 Zero(my_perl, 1, PerlInterpreter);
107 PL_Mem = ipM;
7766f137
GS
108 PL_MemShared = ipMS;
109 PL_MemParse = ipMP;
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GS
110 PL_Env = ipE;
111 PL_StdIO = ipStd;
112 PL_LIO = ipLIO;
113 PL_Dir = ipD;
114 PL_Sock = ipS;
115 PL_Proc = ipP;
7766f137 116
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117 return my_perl;
118}
119#else
954c1994
GS
120
121/*
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122=head1 Embedding Functions
123
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GS
124=for apidoc perl_alloc
125
126Allocates a new Perl interpreter. See L<perlembed>.
127
128=cut
129*/
130
93a17b20 131PerlInterpreter *
cea2e8a9 132perl_alloc(void)
79072805 133{
cea2e8a9 134 PerlInterpreter *my_perl;
35d7cf2c
JH
135#ifdef USE_5005THREADS
136 dTHX;
137#endif
79072805 138
54aff467 139 /* New() needs interpreter, so call malloc() instead */
e8ee3774 140 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 141
06d86050 142 INIT_TLS_AND_INTERP;
dedcbb81 143 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 144 return my_perl;
79072805 145}
32e30700 146#endif /* PERL_IMPLICIT_SYS */
79072805 147
954c1994
GS
148/*
149=for apidoc perl_construct
150
151Initializes a new Perl interpreter. See L<perlembed>.
152
153=cut
154*/
155
79072805 156void
0cb96387 157perl_construct(pTHXx)
79072805 158{
4d1ff10f 159#ifdef USE_5005THREADS
a863c7d1 160#ifndef FAKE_THREADS
e1f15930 161 struct perl_thread *thr = NULL;
a863c7d1 162#endif /* FAKE_THREADS */
4d1ff10f 163#endif /* USE_5005THREADS */
ba869deb 164
8990e307 165#ifdef MULTIPLICITY
54aff467 166 init_interp();
ac27b0f5 167 PL_perl_destruct_level = 1;
54aff467
GS
168#else
169 if (PL_perl_destruct_level > 0)
170 init_interp();
171#endif
172
33f46ff6 173 /* Init the real globals (and main thread)? */
3280af22 174 if (!PL_linestr) {
4d1ff10f 175#ifdef USE_5005THREADS
533c011a 176 MUTEX_INIT(&PL_sv_mutex);
a863c7d1
MB
177 /*
178 * Safe to use basic SV functions from now on (though
179 * not things like mortals or tainting yet).
180 */
533c011a
NIS
181 MUTEX_INIT(&PL_eval_mutex);
182 COND_INIT(&PL_eval_cond);
183 MUTEX_INIT(&PL_threads_mutex);
184 COND_INIT(&PL_nthreads_cond);
ba869deb 185# ifdef EMULATE_ATOMIC_REFCOUNTS
533c011a 186 MUTEX_INIT(&PL_svref_mutex);
ba869deb 187# endif /* EMULATE_ATOMIC_REFCOUNTS */
a863c7d1 188
5ff3f7a4 189 MUTEX_INIT(&PL_cred_mutex);
3d35f11b
GS
190 MUTEX_INIT(&PL_sv_lock_mutex);
191 MUTEX_INIT(&PL_fdpid_mutex);
5ff3f7a4 192
199100c8 193 thr = init_main_thread();
4d1ff10f 194#endif /* USE_5005THREADS */
11343788 195
14dd3ad8 196#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 197 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 198#endif
312caa8e 199
2aea9f8a
GS
200 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
201
3280af22
NIS
202 PL_linestr = NEWSV(65,79);
203 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 204
3280af22 205 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
206 /* set read-only and try to insure than we wont see REFCNT==0
207 very often */
208
3280af22
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209 SvREADONLY_on(&PL_sv_undef);
210 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 211
3280af22
NIS
212 sv_setpv(&PL_sv_no,PL_No);
213 SvNV(&PL_sv_no);
214 SvREADONLY_on(&PL_sv_no);
215 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 216
3280af22
NIS
217 sv_setpv(&PL_sv_yes,PL_Yes);
218 SvNV(&PL_sv_yes);
219 SvREADONLY_on(&PL_sv_yes);
220 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 221 }
79072805 222
cea2e8a9 223 PL_sighandlerp = Perl_sighandler;
3280af22 224 PL_pidstatus = newHV();
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LW
225 }
226
8bfdd7d9 227 PL_rs = newSVpvn("\n", 1);
dc92893f 228
cea2e8a9 229 init_stacks();
79072805 230
748a9306 231 init_ids();
3280af22 232 PL_lex_state = LEX_NOTPARSING;
a5f75d66 233
312caa8e 234 JMPENV_BOOTSTRAP;
f86702cc
PP
235 STATUS_ALL_SUCCESS;
236
0672f40e 237 init_i18nl10n(1);
36477c24 238 SET_NUMERIC_STANDARD();
0b5b802d 239
a7cb1f99
GS
240 {
241 U8 *s;
242 PL_patchlevel = NEWSV(0,4);
155aba94 243 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 244 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 245 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 246 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS
247 /* Build version strings using "native" characters */
248 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
249 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
250 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
GS
251 *s = '\0';
252 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
253 SvPOK_on(PL_patchlevel);
254 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
255 + ((NV)PERL_VERSION / (NV)1000)
cceca5ed 256#if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
a7cb1f99 257 + ((NV)PERL_SUBVERSION / (NV)1000000)
a5f75d66 258#endif
a7cb1f99
GS
259 ;
260 SvNOK_on(PL_patchlevel); /* dual valued */
261 SvUTF8_on(PL_patchlevel);
262 SvREADONLY_on(PL_patchlevel);
263 }
79072805 264
ab821d7f 265#if defined(LOCAL_PATCH_COUNT)
3280af22 266 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
267#endif
268
52853b95
GS
269#ifdef HAVE_INTERP_INTERN
270 sys_intern_init();
271#endif
272
3a1ee7e8 273 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 274
3280af22
NIS
275 PL_fdpid = newAV(); /* for remembering popen pids by fd */
276 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 277 PL_errors = newSVpvn("",0);
48c6b404 278 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
279 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
280 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 281#ifdef USE_ITHREADS
13137afc
AB
282 PL_regex_padav = newAV();
283 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
284 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 285#endif
e5dd39fc 286#ifdef USE_REENTRANT_API
59bd0823 287 Perl_reentrant_init(aTHX);
e5dd39fc 288#endif
3d47000e
AB
289
290 /* Note that strtab is a rather special HV. Assumptions are made
291 about not iterating on it, and not adding tie magic to it.
292 It is properly deallocated in perl_destruct() */
293 PL_strtab = newHV();
294
295#ifdef USE_5005THREADS
296 MUTEX_INIT(&PL_strtab_mutex);
297#endif
298 HvSHAREKEYS_off(PL_strtab); /* mandatory */
299 hv_ksplit(PL_strtab, 512);
300
0631ea03
AB
301#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
302 _dyld_lookup_and_bind
303 ("__environ", (unsigned long *) &environ_pointer, NULL);
304#endif /* environ */
305
306#ifdef USE_ENVIRON_ARRAY
307 PL_origenviron = environ;
308#endif
309
5311654c
JH
310 /* Use sysconf(_SC_CLK_TCK) if available, if not
311 * available or if the sysconf() fails, use the HZ. */
312#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
313 PL_clocktick = sysconf(_SC_CLK_TCK);
314 if (PL_clocktick <= 0)
315#endif
316 PL_clocktick = HZ;
317
8990e307 318 ENTER;
79072805
LW
319}
320
954c1994 321/*
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NIS
322=for apidoc nothreadhook
323
324Stub that provides thread hook for perl_destruct when there are
325no threads.
326
327=cut
328*/
329
330int
4e9e3734 331Perl_nothreadhook(pTHX)
62375a60
NIS
332{
333 return 0;
334}
335
336/*
954c1994
GS
337=for apidoc perl_destruct
338
339Shuts down a Perl interpreter. See L<perlembed>.
340
341=cut
342*/
343
31d77e54 344int
0cb96387 345perl_destruct(pTHXx)
79072805 346{
7c474504 347 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 348 HV *hv;
4d1ff10f 349#ifdef USE_5005THREADS
33f46ff6 350 Thread t;
cea2e8a9 351 dTHX;
4d1ff10f 352#endif /* USE_5005THREADS */
8990e307 353
7766f137
GS
354 /* wait for all pseudo-forked children to finish */
355 PERL_WAIT_FOR_CHILDREN;
356
4d1ff10f 357#ifdef USE_5005THREADS
0f15f207 358#ifndef FAKE_THREADS
8023c3ce
MB
359 /* Pass 1 on any remaining threads: detach joinables, join zombies */
360 retry_cleanup:
533c011a 361 MUTEX_LOCK(&PL_threads_mutex);
bf49b057 362 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 363 "perl_destruct: waiting for %d threads...\n",
533c011a 364 PL_nthreads - 1));
33f46ff6 365 for (t = thr->next; t != thr; t = t->next) {
605e5515
MB
366 MUTEX_LOCK(&t->mutex);
367 switch (ThrSTATE(t)) {
368 AV *av;
c7848ba1 369 case THRf_ZOMBIE:
bf49b057 370 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 371 "perl_destruct: joining zombie %p\n", t));
605e5515
MB
372 ThrSETSTATE(t, THRf_DEAD);
373 MUTEX_UNLOCK(&t->mutex);
533c011a 374 PL_nthreads--;
8023c3ce
MB
375 /*
376 * The SvREFCNT_dec below may take a long time (e.g. av
377 * may contain an object scalar whose destructor gets
378 * called) so we have to unlock threads_mutex and start
379 * all over again.
380 */
533c011a 381 MUTEX_UNLOCK(&PL_threads_mutex);
ea0efc06 382 JOIN(t, &av);
605e5515 383 SvREFCNT_dec((SV*)av);
bf49b057 384 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 385 "perl_destruct: joined zombie %p OK\n", t));
8023c3ce 386 goto retry_cleanup;
c7848ba1 387 case THRf_R_JOINABLE:
bf49b057 388 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
389 "perl_destruct: detaching thread %p\n", t));
390 ThrSETSTATE(t, THRf_R_DETACHED);
ac27b0f5 391 /*
c7848ba1
MB
392 * We unlock threads_mutex and t->mutex in the opposite order
393 * from which we locked them just so that DETACH won't
394 * deadlock if it panics. It's only a breach of good style
395 * not a bug since they are unlocks not locks.
396 */
533c011a 397 MUTEX_UNLOCK(&PL_threads_mutex);
c7848ba1
MB
398 DETACH(t);
399 MUTEX_UNLOCK(&t->mutex);
8023c3ce 400 goto retry_cleanup;
c7848ba1 401 default:
bf49b057 402 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1
MB
403 "perl_destruct: ignoring %p (state %u)\n",
404 t, ThrSTATE(t)));
405 MUTEX_UNLOCK(&t->mutex);
c7848ba1 406 /* fall through and out */
33f46ff6
MB
407 }
408 }
8023c3ce
MB
409 /* We leave the above "Pass 1" loop with threads_mutex still locked */
410
411 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
533c011a 412 while (PL_nthreads > 1)
11343788 413 {
bf49b057 414 DEBUG_S(PerlIO_printf(Perl_debug_log,
c7848ba1 415 "perl_destruct: final wait for %d threads\n",
533c011a
NIS
416 PL_nthreads - 1));
417 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
11343788
MB
418 }
419 /* At this point, we're the last thread */
533c011a 420 MUTEX_UNLOCK(&PL_threads_mutex);
bf49b057 421 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
533c011a
NIS
422 MUTEX_DESTROY(&PL_threads_mutex);
423 COND_DESTROY(&PL_nthreads_cond);
b57a092c 424 PL_nthreads--;
0f15f207 425#endif /* !defined(FAKE_THREADS) */
4d1ff10f 426#endif /* USE_5005THREADS */
11343788 427
3280af22 428 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
429#ifdef DEBUGGING
430 {
431 char *s;
155aba94 432 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc
PP
433 int i = atoi(s);
434 if (destruct_level < i)
435 destruct_level = i;
436 }
4633a7c4
LW
437 }
438#endif
439
31d77e54
AB
440
441 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
442 dJMPENV;
443 int x = 0;
444
445 JMPENV_PUSH(x);
446 if (PL_endav && !PL_minus_c)
447 call_list(PL_scopestack_ix, PL_endav);
448 JMPENV_POP;
26f423df 449 }
f3faeb53 450 LEAVE;
a0d0e21e
LW
451 FREETMPS;
452
e00b64d4 453 /* Need to flush since END blocks can produce output */
f13a2bc0 454 my_fflush_all();
e00b64d4 455
62375a60
NIS
456 if (CALL_FPTR(PL_threadhook)(aTHX)) {
457 /* Threads hook has vetoed further cleanup */
b47cad08 458 return STATUS_NATIVE_EXPORT;
62375a60
NIS
459 }
460
ff0cee69
PP
461 /* We must account for everything. */
462
463 /* Destroy the main CV and syntax tree */
3280af22 464 if (PL_main_root) {
47c8db80
AF
465 /* If running under -d may not have PL_comppad. */
466 PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL;
3280af22
NIS
467 op_free(PL_main_root);
468 PL_main_root = Nullop;
a0d0e21e 469 }
3280af22
NIS
470 PL_curcop = &PL_compiling;
471 PL_main_start = Nullop;
472 SvREFCNT_dec(PL_main_cv);
473 PL_main_cv = Nullcv;
24d3c518 474 PL_dirty = TRUE;
ff0cee69 475
13621cfb
NIS
476 /* Tell PerlIO we are about to tear things apart in case
477 we have layers which are using resources that should
478 be cleaned up now.
479 */
480
481 PerlIO_destruct(aTHX);
482
3280af22 483 if (PL_sv_objcount) {
a0d0e21e
LW
484 /*
485 * Try to destruct global references. We do this first so that the
486 * destructors and destructees still exist. Some sv's might remain.
487 * Non-referenced objects are on their own.
488 */
a0d0e21e 489 sv_clean_objs();
8990e307
LW
490 }
491
5cd24f17 492 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
493 SvREFCNT_dec(PL_warnhook);
494 PL_warnhook = Nullsv;
495 SvREFCNT_dec(PL_diehook);
496 PL_diehook = Nullsv;
5cd24f17 497
4b556e6c 498 /* call exit list functions */
3280af22 499 while (PL_exitlistlen-- > 0)
acfe0abc 500 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 501
3280af22 502 Safefree(PL_exitlist);
4b556e6c 503
a0d0e21e 504 if (destruct_level == 0){
8990e307 505
a0d0e21e 506 DEBUG_P(debprofdump());
ac27b0f5 507
56a2bab7
NIS
508#if defined(PERLIO_LAYERS)
509 /* No more IO - including error messages ! */
510 PerlIO_cleanup(aTHX);
511#endif
512
a0d0e21e 513 /* The exit() function will do everything that needs doing. */
b47cad08 514 return STATUS_NATIVE_EXPORT;
a0d0e21e 515 }
5dd60ef7 516
551a8b83 517 /* jettison our possibly duplicated environment */
4b647fb0
DM
518 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
519 * so we certainly shouldn't free it here
520 */
521#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
4efc5df6
GS
522 if (environ != PL_origenviron
523#ifdef USE_ITHREADS
524 /* only main thread can free environ[0] contents */
525 && PL_curinterp == aTHX
526#endif
527 )
528 {
551a8b83
JH
529 I32 i;
530
531 for (i = 0; environ[i]; i++)
4b420006 532 safesysfree(environ[i]);
0631ea03 533
4b420006
JH
534 /* Must use safesysfree() when working with environ. */
535 safesysfree(environ);
551a8b83
JH
536
537 environ = PL_origenviron;
538 }
539#endif
540
5f8cb046
DM
541#ifdef USE_ITHREADS
542 /* the syntax tree is shared between clones
543 * so op_free(PL_main_root) only ReREFCNT_dec's
544 * REGEXPs in the parent interpreter
545 * we need to manually ReREFCNT_dec for the clones
546 */
547 {
548 I32 i = AvFILLp(PL_regex_padav) + 1;
549 SV **ary = AvARRAY(PL_regex_padav);
550
551 while (i) {
35061a7e 552 SV *resv = ary[--i];
ba89bb6e 553 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM
554
555 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 556 /* this is PL_reg_curpm, already freed
35061a7e
DM
557 * flag is set in regexec.c:S_regtry
558 */
559 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 560 }
1cc8b4c5
AB
561 else if(SvREPADTMP(resv)) {
562 SvREPADTMP_off(resv);
563 }
35061a7e 564 else {
5f8cb046
DM
565 ReREFCNT_dec(re);
566 }
567 }
568 }
569 SvREFCNT_dec(PL_regex_padav);
570 PL_regex_padav = Nullav;
571 PL_regex_pad = NULL;
572#endif
573
5f05dabc
PP
574 /* loosen bonds of global variables */
575
3280af22
NIS
576 if(PL_rsfp) {
577 (void)PerlIO_close(PL_rsfp);
578 PL_rsfp = Nullfp;
8ebc5c01
PP
579 }
580
581 /* Filters for program text */
3280af22
NIS
582 SvREFCNT_dec(PL_rsfp_filters);
583 PL_rsfp_filters = Nullav;
8ebc5c01
PP
584
585 /* switches */
3280af22
NIS
586 PL_preprocess = FALSE;
587 PL_minus_n = FALSE;
588 PL_minus_p = FALSE;
589 PL_minus_l = FALSE;
590 PL_minus_a = FALSE;
591 PL_minus_F = FALSE;
592 PL_doswitches = FALSE;
599cee73 593 PL_dowarn = G_WARN_OFF;
3280af22
NIS
594 PL_doextract = FALSE;
595 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
596 PL_unsafe = FALSE;
597
598 Safefree(PL_inplace);
599 PL_inplace = Nullch;
a7cb1f99 600 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
601
602 if (PL_e_script) {
603 SvREFCNT_dec(PL_e_script);
604 PL_e_script = Nullsv;
8ebc5c01
PP
605 }
606
bc0a45ed
DM
607 while (--PL_origargc >= 0) {
608 Safefree(PL_origargv[PL_origargc]);
609 }
610 Safefree(PL_origargv);
611
8ebc5c01
PP
612 /* magical thingies */
613
7889fe52
NIS
614 SvREFCNT_dec(PL_ofs_sv); /* $, */
615 PL_ofs_sv = Nullsv;
5f05dabc 616
7889fe52
NIS
617 SvREFCNT_dec(PL_ors_sv); /* $\ */
618 PL_ors_sv = Nullsv;
8ebc5c01 619
3280af22
NIS
620 SvREFCNT_dec(PL_rs); /* $/ */
621 PL_rs = Nullsv;
dc92893f 622
d33b2eba
GS
623 PL_multiline = 0; /* $* */
624 Safefree(PL_osname); /* $^O */
625 PL_osname = Nullch;
5f05dabc 626
3280af22
NIS
627 SvREFCNT_dec(PL_statname);
628 PL_statname = Nullsv;
629 PL_statgv = Nullgv;
5f05dabc 630
8ebc5c01
PP
631 /* defgv, aka *_ should be taken care of elsewhere */
632
8ebc5c01 633 /* clean up after study() */
3280af22
NIS
634 SvREFCNT_dec(PL_lastscream);
635 PL_lastscream = Nullsv;
636 Safefree(PL_screamfirst);
637 PL_screamfirst = 0;
638 Safefree(PL_screamnext);
639 PL_screamnext = 0;
8ebc5c01 640
7d5ea4e7
GS
641 /* float buffer */
642 Safefree(PL_efloatbuf);
643 PL_efloatbuf = Nullch;
644 PL_efloatsize = 0;
645
8ebc5c01 646 /* startup and shutdown function lists */
3280af22 647 SvREFCNT_dec(PL_beginav);
5a837c8f 648 SvREFCNT_dec(PL_beginav_save);
3280af22 649 SvREFCNT_dec(PL_endav);
7d30b5c4 650 SvREFCNT_dec(PL_checkav);
ece599bd 651 SvREFCNT_dec(PL_checkav_save);
3280af22
NIS
652 SvREFCNT_dec(PL_initav);
653 PL_beginav = Nullav;
5a837c8f 654 PL_beginav_save = Nullav;
3280af22 655 PL_endav = Nullav;
7d30b5c4 656 PL_checkav = Nullav;
ece599bd 657 PL_checkav_save = Nullav;
3280af22 658 PL_initav = Nullav;
5618dfe8 659
8ebc5c01 660 /* shortcuts just get cleared */
3280af22 661 PL_envgv = Nullgv;
3280af22
NIS
662 PL_incgv = Nullgv;
663 PL_hintgv = Nullgv;
664 PL_errgv = Nullgv;
665 PL_argvgv = Nullgv;
666 PL_argvoutgv = Nullgv;
667 PL_stdingv = Nullgv;
bf49b057 668 PL_stderrgv = Nullgv;
3280af22
NIS
669 PL_last_in_gv = Nullgv;
670 PL_replgv = Nullgv;
5c831c24 671 PL_debstash = Nullhv;
8ebc5c01
PP
672
673 /* reset so print() ends up where we expect */
674 setdefout(Nullgv);
5c831c24 675
7a1c5554
GS
676 SvREFCNT_dec(PL_argvout_stack);
677 PL_argvout_stack = Nullav;
8ebc5c01 678
5c831c24
GS
679 SvREFCNT_dec(PL_modglobal);
680 PL_modglobal = Nullhv;
681 SvREFCNT_dec(PL_preambleav);
682 PL_preambleav = Nullav;
683 SvREFCNT_dec(PL_subname);
684 PL_subname = Nullsv;
685 SvREFCNT_dec(PL_linestr);
686 PL_linestr = Nullsv;
687 SvREFCNT_dec(PL_pidstatus);
688 PL_pidstatus = Nullhv;
689 SvREFCNT_dec(PL_toptarget);
690 PL_toptarget = Nullsv;
691 SvREFCNT_dec(PL_bodytarget);
692 PL_bodytarget = Nullsv;
693 PL_formtarget = Nullsv;
694
d33b2eba 695 /* free locale stuff */
b9582b6a 696#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
697 Safefree(PL_collation_name);
698 PL_collation_name = Nullch;
b9582b6a 699#endif
d33b2eba 700
b9582b6a 701#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
702 Safefree(PL_numeric_name);
703 PL_numeric_name = Nullch;
a453c169 704 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 705#endif
d33b2eba 706
5c831c24
GS
707 /* clear utf8 character classes */
708 SvREFCNT_dec(PL_utf8_alnum);
709 SvREFCNT_dec(PL_utf8_alnumc);
710 SvREFCNT_dec(PL_utf8_ascii);
711 SvREFCNT_dec(PL_utf8_alpha);
712 SvREFCNT_dec(PL_utf8_space);
713 SvREFCNT_dec(PL_utf8_cntrl);
714 SvREFCNT_dec(PL_utf8_graph);
715 SvREFCNT_dec(PL_utf8_digit);
716 SvREFCNT_dec(PL_utf8_upper);
717 SvREFCNT_dec(PL_utf8_lower);
718 SvREFCNT_dec(PL_utf8_print);
719 SvREFCNT_dec(PL_utf8_punct);
720 SvREFCNT_dec(PL_utf8_xdigit);
721 SvREFCNT_dec(PL_utf8_mark);
722 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 723 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 724 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 725 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
726 SvREFCNT_dec(PL_utf8_idstart);
727 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS
728 PL_utf8_alnum = Nullsv;
729 PL_utf8_alnumc = Nullsv;
730 PL_utf8_ascii = Nullsv;
731 PL_utf8_alpha = Nullsv;
732 PL_utf8_space = Nullsv;
733 PL_utf8_cntrl = Nullsv;
734 PL_utf8_graph = Nullsv;
735 PL_utf8_digit = Nullsv;
736 PL_utf8_upper = Nullsv;
737 PL_utf8_lower = Nullsv;
738 PL_utf8_print = Nullsv;
739 PL_utf8_punct = Nullsv;
740 PL_utf8_xdigit = Nullsv;
741 PL_utf8_mark = Nullsv;
742 PL_utf8_toupper = Nullsv;
743 PL_utf8_totitle = Nullsv;
744 PL_utf8_tolower = Nullsv;
b4e400f9 745 PL_utf8_tofold = Nullsv;
82686b01
JH
746 PL_utf8_idstart = Nullsv;
747 PL_utf8_idcont = Nullsv;
5c831c24 748
971a9dd3
GS
749 if (!specialWARN(PL_compiling.cop_warnings))
750 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 751 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
752 if (!specialCopIO(PL_compiling.cop_io))
753 SvREFCNT_dec(PL_compiling.cop_io);
754 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS
755 CopFILE_free(&PL_compiling);
756 CopSTASH_free(&PL_compiling);
5c831c24 757
a0d0e21e 758 /* Prepare to destruct main symbol table. */
5f05dabc 759
3280af22
NIS
760 hv = PL_defstash;
761 PL_defstash = 0;
a0d0e21e 762 SvREFCNT_dec(hv);
5c831c24
GS
763 SvREFCNT_dec(PL_curstname);
764 PL_curstname = Nullsv;
a0d0e21e 765
5a844595
GS
766 /* clear queued errors */
767 SvREFCNT_dec(PL_errors);
768 PL_errors = Nullsv;
769
a0d0e21e 770 FREETMPS;
0453d815 771 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 772 if (PL_scopestack_ix != 0)
9014280d 773 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 774 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
775 (long)PL_scopestack_ix);
776 if (PL_savestack_ix != 0)
9014280d 777 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 778 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
779 (long)PL_savestack_ix);
780 if (PL_tmps_floor != -1)
9014280d 781 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 782 (long)PL_tmps_floor + 1);
a0d0e21e 783 if (cxstack_ix != -1)
9014280d 784 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 785 (long)cxstack_ix + 1);
a0d0e21e 786 }
8990e307
LW
787
788 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 789 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 790 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
791
792 /* the 2 is for PL_fdpid and PL_strtab */
793 while (PL_sv_count > 2 && sv_clean_all())
794 ;
795
d33b2eba
GS
796 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
797 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
798 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
799 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 800
d4777f27
GS
801 AvREAL_off(PL_fdpid); /* no surviving entries */
802 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
803 PL_fdpid = Nullav;
804
6c644e78
GS
805#ifdef HAVE_INTERP_INTERN
806 sys_intern_clear();
807#endif
808
6e72f9df
PP
809 /* Destruct the global string table. */
810 {
811 /* Yell and reset the HeVAL() slots that are still holding refcounts,
812 * so that sv_free() won't fail on them.
813 */
814 I32 riter;
815 I32 max;
816 HE *hent;
817 HE **array;
818
819 riter = 0;
3280af22
NIS
820 max = HvMAX(PL_strtab);
821 array = HvARRAY(PL_strtab);
6e72f9df
PP
822 hent = array[0];
823 for (;;) {
0453d815 824 if (hent && ckWARN_d(WARN_INTERNAL)) {
9014280d 825 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 826 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
827 HeVAL(hent) - Nullsv, HeKEY(hent));
828 HeVAL(hent) = Nullsv;
829 hent = HeNEXT(hent);
830 }
831 if (!hent) {
832 if (++riter > max)
833 break;
834 hent = array[riter];
835 }
836 }
837 }
3280af22 838 SvREFCNT_dec(PL_strtab);
6e72f9df 839
e652bb2f 840#ifdef USE_ITHREADS
a0739874
DM
841 /* free the pointer table used for cloning */
842 ptr_table_free(PL_ptr_table);
53186e96 843#endif
a0739874 844
d33b2eba
GS
845 /* free special SVs */
846
847 SvREFCNT(&PL_sv_yes) = 0;
848 sv_clear(&PL_sv_yes);
849 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 850 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
851
852 SvREFCNT(&PL_sv_no) = 0;
853 sv_clear(&PL_sv_no);
854 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 855 SvFLAGS(&PL_sv_no) = 0;
01724ea0 856
9f375a43
DM
857 {
858 int i;
859 for (i=0; i<=2; i++) {
860 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
861 sv_clear(PERL_DEBUG_PAD(i));
862 SvANY(PERL_DEBUG_PAD(i)) = NULL;
863 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
864 }
865 }
866
0453d815 867 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 868 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 869
56a2bab7 870#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
871 /* No more IO - including error messages ! */
872 PerlIO_cleanup(aTHX);
873#endif
874
9f4bd222
NIS
875 /* sv_undef needs to stay immortal until after PerlIO_cleanup
876 as currently layers use it rather than Nullsv as a marker
877 for no arg - and will try and SvREFCNT_dec it.
878 */
879 SvREFCNT(&PL_sv_undef) = 0;
880 SvREADONLY_off(&PL_sv_undef);
881
3280af22 882 Safefree(PL_origfilename);
3280af22 883 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
884 if (PL_reg_curpm)
885 Safefree(PL_reg_curpm);
82ba1be6 886 Safefree(PL_reg_poscache);
3280af22
NIS
887 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
888 Safefree(PL_op_mask);
cf36064f
GS
889 Safefree(PL_psig_ptr);
890 Safefree(PL_psig_name);
2c2666fc 891 Safefree(PL_bitcount);
ce08f86c 892 Safefree(PL_psig_pend);
6e72f9df 893 nuke_stacks();
3280af22 894 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 895
a0d0e21e 896 DEBUG_P(debprofdump());
4d1ff10f 897#ifdef USE_5005THREADS
5f08fbcd 898 MUTEX_DESTROY(&PL_strtab_mutex);
533c011a
NIS
899 MUTEX_DESTROY(&PL_sv_mutex);
900 MUTEX_DESTROY(&PL_eval_mutex);
5ff3f7a4 901 MUTEX_DESTROY(&PL_cred_mutex);
3d35f11b 902 MUTEX_DESTROY(&PL_fdpid_mutex);
533c011a 903 COND_DESTROY(&PL_eval_cond);
11d617a5
GS
904#ifdef EMULATE_ATOMIC_REFCOUNTS
905 MUTEX_DESTROY(&PL_svref_mutex);
906#endif /* EMULATE_ATOMIC_REFCOUNTS */
fc36a67e 907
8023c3ce 908 /* As the penultimate thing, free the non-arena SV for thrsv */
533c011a
NIS
909 Safefree(SvPVX(PL_thrsv));
910 Safefree(SvANY(PL_thrsv));
911 Safefree(PL_thrsv);
912 PL_thrsv = Nullsv;
4d1ff10f 913#endif /* USE_5005THREADS */
d33b2eba 914
e5dd39fc 915#ifdef USE_REENTRANT_API
10bc17b6 916 Perl_reentrant_free(aTHX);
e5dd39fc
AB
917#endif
918
612f20c3
GS
919 sv_free_arenas();
920
fc36a67e
PP
921 /* As the absolutely last thing, free the non-arena SV for mess() */
922
3280af22 923 if (PL_mess_sv) {
9c63abab
GS
924 /* it could have accumulated taint magic */
925 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
926 MAGIC* mg;
927 MAGIC* moremagic;
928 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
929 moremagic = mg->mg_moremagic;
14befaf4
DM
930 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
931 && mg->mg_len >= 0)
9c63abab
GS
932 Safefree(mg->mg_ptr);
933 Safefree(mg);
934 }
935 }
fc36a67e 936 /* we know that type >= SVt_PV */
155aba94 937 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
938 Safefree(SvPVX(PL_mess_sv));
939 Safefree(SvANY(PL_mess_sv));
940 Safefree(PL_mess_sv);
941 PL_mess_sv = Nullsv;
fc36a67e 942 }
31d77e54 943 return STATUS_NATIVE_EXPORT;
79072805
LW
944}
945
954c1994
GS
946/*
947=for apidoc perl_free
948
949Releases a Perl interpreter. See L<perlembed>.
950
951=cut
952*/
953
79072805 954void
0cb96387 955perl_free(pTHXx)
79072805 956{
acfe0abc 957#if defined(WIN32) || defined(NETWARE)
ce3e5b80 958# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
959# ifdef NETWARE
960 void *host = nw_internal_host;
961# else
962 void *host = w32_internal_host;
963# endif
ce3e5b80 964 PerlMem_free(aTHXx);
acfe0abc 965# ifdef NETWARE
011f1a1a 966 nw_delete_internal_host(host);
acfe0abc
GS
967# else
968 win32_delete_internal_host(host);
969# endif
1c0ca838
GS
970# else
971 PerlMem_free(aTHXx);
972# endif
acfe0abc
GS
973#else
974 PerlMem_free(aTHXx);
76e3520e 975#endif
79072805
LW
976}
977
4b556e6c 978void
864dbfa3 979Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 980{
3280af22
NIS
981 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
982 PL_exitlist[PL_exitlistlen].fn = fn;
983 PL_exitlist[PL_exitlistlen].ptr = ptr;
984 ++PL_exitlistlen;
4b556e6c
JD
985}
986
954c1994
GS
987/*
988=for apidoc perl_parse
989
990Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
991
992=cut
993*/
994
79072805 995int
0cb96387 996perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 997{
6224f72b 998 I32 oldscope;
6224f72b 999 int ret;
db36c5a1 1000 dJMPENV;
4d1ff10f 1001#ifdef USE_5005THREADS
cea2e8a9
GS
1002 dTHX;
1003#endif
8d063cd8 1004
a687059c
LW
1005#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1006#ifdef IAMSUID
1007#undef IAMSUID
cea2e8a9 1008 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
1009setuid perl scripts securely.\n");
1010#endif
1011#endif
1012
3280af22 1013 PL_origargc = argc;
bc0a45ed
DM
1014 {
1015 /* we copy rather than point to argv
1016 * since perl_clone will copy and perl_destruct
3a1ee7e8 1017 * has no way of knowing if we've made a copy or
bc0a45ed
DM
1018 * just point to argv
1019 */
1020 int i = PL_origargc;
1021 New(0, PL_origargv, i+1, char*);
1022 PL_origargv[i] = '\0';
1023 while (i-- > 0) {
1024 PL_origargv[i] = savepv(argv[i]);
1025 }
1026 }
1027
0631ea03 1028
a0d0e21e 1029
3280af22 1030 if (PL_do_undump) {
a0d0e21e
LW
1031
1032 /* Come here if running an undumped a.out. */
1033
3280af22
NIS
1034 PL_origfilename = savepv(argv[0]);
1035 PL_do_undump = FALSE;
a0d0e21e 1036 cxstack_ix = -1; /* start label stack again */
748a9306 1037 init_ids();
a0d0e21e
LW
1038 init_postdump_symbols(argc,argv,env);
1039 return 0;
1040 }
1041
3280af22
NIS
1042 if (PL_main_root) {
1043 PL_curpad = AvARRAY(PL_comppad);
1044 op_free(PL_main_root);
1045 PL_main_root = Nullop;
ff0cee69 1046 }
3280af22
NIS
1047 PL_main_start = Nullop;
1048 SvREFCNT_dec(PL_main_cv);
1049 PL_main_cv = Nullcv;
79072805 1050
3280af22
NIS
1051 time(&PL_basetime);
1052 oldscope = PL_scopestack_ix;
599cee73 1053 PL_dowarn = G_WARN_OFF;
f86702cc 1054
14dd3ad8
GS
1055#ifdef PERL_FLEXIBLE_EXCEPTIONS
1056 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1057#else
1058 JMPENV_PUSH(ret);
1059#endif
6224f72b 1060 switch (ret) {
312caa8e 1061 case 0:
14dd3ad8
GS
1062#ifndef PERL_FLEXIBLE_EXCEPTIONS
1063 parse_body(env,xsinit);
1064#endif
7d30b5c4
GS
1065 if (PL_checkav)
1066 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1067 ret = 0;
1068 break;
6224f72b
GS
1069 case 1:
1070 STATUS_ALL_FAILURE;
1071 /* FALL THROUGH */
1072 case 2:
1073 /* my_exit() was called */
3280af22 1074 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1075 LEAVE;
1076 FREETMPS;
3280af22 1077 PL_curstash = PL_defstash;
7d30b5c4
GS
1078 if (PL_checkav)
1079 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1080 ret = STATUS_NATIVE_EXPORT;
1081 break;
6224f72b 1082 case 3:
bf49b057 1083 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1084 ret = 1;
1085 break;
6224f72b 1086 }
14dd3ad8
GS
1087 JMPENV_POP;
1088 return ret;
1089}
1090
1091#ifdef PERL_FLEXIBLE_EXCEPTIONS
1092STATIC void *
1093S_vparse_body(pTHX_ va_list args)
1094{
1095 char **env = va_arg(args, char**);
1096 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1097
1098 return parse_body(env, xsinit);
312caa8e 1099}
14dd3ad8 1100#endif
312caa8e
CS
1101
1102STATIC void *
14dd3ad8 1103S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1104{
312caa8e
CS
1105 int argc = PL_origargc;
1106 char **argv = PL_origargv;
312caa8e
CS
1107 char *scriptname = NULL;
1108 int fdscript = -1;
1109 VOL bool dosearch = FALSE;
1110 char *validarg = "";
1111 AV* comppadlist;
1112 register SV *sv;
1113 register char *s;
cf756827 1114 char *cddir = Nullch;
312caa8e 1115
3280af22 1116 sv_setpvn(PL_linestr,"",0);
79cb57f6 1117 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
1118 SAVEFREESV(sv);
1119 init_main_stash();
54310121 1120
6224f72b
GS
1121 for (argc--,argv++; argc > 0; argc--,argv++) {
1122 if (argv[0][0] != '-' || !argv[0][1])
1123 break;
1124#ifdef DOSUID
1125 if (*validarg)
1126 validarg = " PHOOEY ";
1127 else
1128 validarg = argv[0];
13281fa4 1129#endif
6224f72b
GS
1130 s = argv[0]+1;
1131 reswitch:
1132 switch (*s) {
729a02f2
GS
1133 case 'C':
1134#ifdef WIN32
c0932edc 1135 win32_argv2utf8(argc-1, argv+1);
729a02f2
GS
1136 /* FALL THROUGH */
1137#endif
1d5472a9
GS
1138#ifndef PERL_STRICT_CR
1139 case '\r':
1140#endif
6224f72b
GS
1141 case ' ':
1142 case '0':
1143 case 'F':
1144 case 'a':
1145 case 'c':
1146 case 'd':
1147 case 'D':
1148 case 'h':
1149 case 'i':
1150 case 'l':
1151 case 'M':
1152 case 'm':
1153 case 'n':
1154 case 'p':
1155 case 's':
1156 case 'u':
1157 case 'U':
1158 case 'v':
599cee73
PM
1159 case 'W':
1160 case 'X':
6224f72b 1161 case 'w':
155aba94 1162 if ((s = moreswitches(s)))
6224f72b
GS
1163 goto reswitch;
1164 break;
33b78306 1165
1dbad523 1166 case 't':
317ea90d
MS
1167 if( !PL_tainting ) {
1168 PL_taint_warn = TRUE;
1169 PL_tainting = TRUE;
1170 }
1171 s++;
1172 goto reswitch;
6224f72b 1173 case 'T':
3280af22 1174 PL_tainting = TRUE;
317ea90d 1175 PL_taint_warn = FALSE;
6224f72b
GS
1176 s++;
1177 goto reswitch;
f86702cc 1178
6224f72b 1179 case 'e':
bf4acbe4
GS
1180#ifdef MACOS_TRADITIONAL
1181 /* ignore -e for Dev:Pseudo argument */
1182 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1183 break;
bf4acbe4 1184#endif
3280af22 1185 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1186 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1187 if (!PL_e_script) {
79cb57f6 1188 PL_e_script = newSVpvn("",0);
0cb96387 1189 filter_add(read_e_script, NULL);
6224f72b
GS
1190 }
1191 if (*++s)
3280af22 1192 sv_catpv(PL_e_script, s);
6224f72b 1193 else if (argv[1]) {
3280af22 1194 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1195 argc--,argv++;
1196 }
1197 else
cea2e8a9 1198 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1199 sv_catpv(PL_e_script, "\n");
6224f72b 1200 break;
afe37c7d 1201
6224f72b
GS
1202 case 'I': /* -I handled both here and in moreswitches() */
1203 forbid_setid("-I");
1204 if (!*++s && (s=argv[1]) != Nullch) {
1205 argc--,argv++;
1206 }
6224f72b 1207 if (s && *s) {
0df16ed7
GS
1208 char *p;
1209 STRLEN len = strlen(s);
1210 p = savepvn(s, len);
9c8a64f0 1211 incpush(p, TRUE, TRUE);
0df16ed7
GS
1212 sv_catpvn(sv, "-I", 2);
1213 sv_catpvn(sv, p, len);
1214 sv_catpvn(sv, " ", 1);
6224f72b 1215 Safefree(p);
0df16ed7
GS
1216 }
1217 else
a67e862a 1218 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1219 break;
1220 case 'P':
1221 forbid_setid("-P");
3280af22 1222 PL_preprocess = TRUE;
6224f72b
GS
1223 s++;
1224 goto reswitch;
1225 case 'S':
1226 forbid_setid("-S");
1227 dosearch = TRUE;
1228 s++;
1229 goto reswitch;
1230 case 'V':
3280af22
NIS
1231 if (!PL_preambleav)
1232 PL_preambleav = newAV();
1233 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1234 if (*++s != ':') {
3280af22 1235 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1236#ifdef VMS
6b88bc9c 1237 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1238#else
3280af22 1239 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1240#endif
3280af22 1241 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1242# ifdef DEBUGGING
3280af22 1243 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1244# endif
6224f72b 1245# ifdef MULTIPLICITY
8f872242 1246 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1247# endif
4d1ff10f
AB
1248# ifdef USE_5005THREADS
1249 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1250# endif
ac5e8965
JH
1251# ifdef USE_ITHREADS
1252 sv_catpv(PL_Sv," USE_ITHREADS");
1253# endif
10cc9d2a
JH
1254# ifdef USE_64_BIT_INT
1255 sv_catpv(PL_Sv," USE_64_BIT_INT");
1256# endif
1257# ifdef USE_64_BIT_ALL
1258 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1259# endif
1260# ifdef USE_LONG_DOUBLE
1261 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1262# endif
53430762
JH
1263# ifdef USE_LARGE_FILES
1264 sv_catpv(PL_Sv," USE_LARGE_FILES");
1265# endif
ac5e8965
JH
1266# ifdef USE_SOCKS
1267 sv_catpv(PL_Sv," USE_SOCKS");
1268# endif
b363f7ed
GS
1269# ifdef PERL_IMPLICIT_CONTEXT
1270 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1271# endif
1272# ifdef PERL_IMPLICIT_SYS
1273 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1274# endif
3280af22 1275 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1276
6224f72b
GS
1277#if defined(LOCAL_PATCH_COUNT)
1278 if (LOCAL_PATCH_COUNT > 0) {
1279 int i;
3280af22 1280 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1281 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1282 if (PL_localpatches[i])
cea2e8a9 1283 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1284 }
1285 }
1286#endif
cea2e8a9 1287 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1288#ifdef __DATE__
1289# ifdef __TIME__
cea2e8a9 1290 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1291# else
cea2e8a9 1292 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1293# endif
1294#endif
3280af22 1295 sv_catpv(PL_Sv, "; \
6224f72b 1296$\"=\"\\n \"; \
69fcd688
JH
1297@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1298#ifdef __CYGWIN__
1299 sv_catpv(PL_Sv,"\
1300push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1301#endif
1302 sv_catpv(PL_Sv, "\
6224f72b
GS
1303print \" \\%ENV:\\n @env\\n\" if @env; \
1304print \" \\@INC:\\n @INC\\n\";");
1305 }
1306 else {
3280af22
NIS
1307 PL_Sv = newSVpv("config_vars(qw(",0);
1308 sv_catpv(PL_Sv, ++s);
1309 sv_catpv(PL_Sv, "))");
6224f72b
GS
1310 s += strlen(s);
1311 }
3280af22 1312 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1313 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1314 goto reswitch;
1315 case 'x':
3280af22 1316 PL_doextract = TRUE;
6224f72b
GS
1317 s++;
1318 if (*s)
f4c556ac 1319 cddir = s;
6224f72b
GS
1320 break;
1321 case 0:
1322 break;
1323 case '-':
1324 if (!*++s || isSPACE(*s)) {
1325 argc--,argv++;
1326 goto switch_end;
1327 }
1328 /* catch use of gnu style long options */
1329 if (strEQ(s, "version")) {
1330 s = "v";
1331 goto reswitch;
1332 }
1333 if (strEQ(s, "help")) {
1334 s = "h";
1335 goto reswitch;
1336 }
1337 s--;
1338 /* FALL THROUGH */
1339 default:
cea2e8a9 1340 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1341 }
1342 }
6224f72b 1343 switch_end:
54310121 1344
f675dbe5
CB
1345 if (
1346#ifndef SECURE_INTERNAL_GETENV
1347 !PL_tainting &&
1348#endif
cf756827 1349 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1350 {
cf756827 1351 char *popt = s;
74288ac8
GS
1352 while (isSPACE(*s))
1353 s++;
317ea90d 1354 if (*s == '-' && *(s+1) == 'T') {
74288ac8 1355 PL_tainting = TRUE;
317ea90d
MS
1356 PL_taint_warn = FALSE;
1357 }
74288ac8 1358 else {
cf756827 1359 char *popt_copy = Nullch;
74288ac8 1360 while (s && *s) {
4ea8f8fb 1361 char *d;
74288ac8
GS
1362 while (isSPACE(*s))
1363 s++;
1364 if (*s == '-') {
1365 s++;
1366 if (isSPACE(*s))
1367 continue;
1368 }
4ea8f8fb 1369 d = s;
74288ac8
GS
1370 if (!*s)
1371 break;
1c4db469 1372 if (!strchr("DIMUdmtw", *s))
cea2e8a9 1373 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1374 while (++s && *s) {
1375 if (isSPACE(*s)) {
cf756827
GS
1376 if (!popt_copy) {
1377 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1378 s = popt_copy + (s - popt);
1379 d = popt_copy + (d - popt);
1380 }
4ea8f8fb
MS
1381 *s++ = '\0';
1382 break;
1383 }
1384 }
1c4db469 1385 if (*d == 't') {
317ea90d
MS
1386 if( !PL_tainting ) {
1387 PL_taint_warn = TRUE;
1388 PL_tainting = TRUE;
1389 }
1c4db469
RGS
1390 } else {
1391 moreswitches(d);
1392 }
6224f72b 1393 }
6224f72b
GS
1394 }
1395 }
a0d0e21e 1396
317ea90d
MS
1397 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1398 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1399 }
1400
6224f72b
GS
1401 if (!scriptname)
1402 scriptname = argv[0];
3280af22 1403 if (PL_e_script) {
6224f72b
GS
1404 argc++,argv--;
1405 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1406 }
1407 else if (scriptname == Nullch) {
1408#ifdef MSDOS
1409 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1410 moreswitches("h");
1411#endif
1412 scriptname = "-";
1413 }
1414
1415 init_perllib();
1416
1417 open_script(scriptname,dosearch,sv,&fdscript);
1418
1419 validate_suid(validarg, scriptname,fdscript);
1420
64ca3a65 1421#ifndef PERL_MICRO
0b5b802d
GS
1422#if defined(SIGCHLD) || defined(SIGCLD)
1423 {
1424#ifndef SIGCHLD
1425# define SIGCHLD SIGCLD
1426#endif
1427 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1428 if (sigstate == SIG_IGN) {
1429 if (ckWARN(WARN_SIGNAL))
9014280d 1430 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
1431 "Can't ignore signal CHLD, forcing to default");
1432 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1433 }
1434 }
1435#endif
64ca3a65 1436#endif
0b5b802d 1437
bf4acbe4
GS
1438#ifdef MACOS_TRADITIONAL
1439 if (PL_doextract || gMacPerl_AlwaysExtract) {
1440#else
f4c556ac 1441 if (PL_doextract) {
bf4acbe4 1442#endif
6224f72b 1443 find_beginning();
f4c556ac
GS
1444 if (cddir && PerlDir_chdir(cddir) < 0)
1445 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1446
1447 }
6224f72b 1448
3280af22
NIS
1449 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1450 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1451 CvUNIQUE_on(PL_compcv);
1452
1453 PL_comppad = newAV();
1454 av_push(PL_comppad, Nullsv);
1455 PL_curpad = AvARRAY(PL_comppad);
1456 PL_comppad_name = newAV();
1457 PL_comppad_name_fill = 0;
1458 PL_min_intro_pending = 0;
1459 PL_padix = 0;
4d1ff10f 1460#ifdef USE_5005THREADS
79cb57f6 1461 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
533c011a
NIS
1462 PL_curpad[0] = (SV*)newAV();
1463 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1464 CvOWNER(PL_compcv) = 0;
1465 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1466 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1467#endif /* USE_5005THREADS */
6224f72b
GS
1468
1469 comppadlist = newAV();
1470 AvREAL_off(comppadlist);
3280af22
NIS
1471 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1472 av_store(comppadlist, 1, (SV*)PL_comppad);
1473 CvPADLIST(PL_compcv) = comppadlist;
6224f72b 1474
0c4f7ff0 1475 boot_core_PerlIO();
6224f72b 1476 boot_core_UNIVERSAL();
9a34ef1d 1477#ifndef PERL_MICRO
09bef843 1478 boot_core_xsutils();
9a34ef1d 1479#endif
6224f72b
GS
1480
1481 if (xsinit)
acfe0abc 1482 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1483#ifndef PERL_MICRO
ed79a026 1484#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1485 init_os_extras();
6224f72b 1486#endif
64ca3a65 1487#endif
6224f72b 1488
29209bc5 1489#ifdef USE_SOCKS
1b9c9cf5
DH
1490# ifdef HAS_SOCKS5_INIT
1491 socks5_init(argv[0]);
1492# else
29209bc5 1493 SOCKSinit(argv[0]);
1b9c9cf5 1494# endif
ac27b0f5 1495#endif
29209bc5 1496
6224f72b
GS
1497 init_predump_symbols();
1498 /* init_postdump_symbols not currently designed to be called */
1499 /* more than once (ENV isn't cleared first, for example) */
1500 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1501 if (!PL_do_undump)
6224f72b
GS
1502 init_postdump_symbols(argc,argv,env);
1503
085a54d9
JH
1504 /* PL_wantutf8 is conditionally turned on by
1505 * locale.c:Perl_init_i18nl10n() if the environment
1506 * look like the user wants to use UTF-8. */
b310b053
JH
1507 if (PL_wantutf8) { /* Requires init_predump_symbols(). */
1508 IO* io;
1509 PerlIO* fp;
1510 SV* sv;
085a54d9
JH
1511 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1512 * _and_ the default open discipline. */
b310b053
JH
1513 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1514 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1515 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1516 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1517 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1518 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1519 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1520 sv_setpvn(sv, ":utf8\0:utf8", 11);
1521 SvSETMAGIC(sv);
1522 }
1523 }
1524
6224f72b
GS
1525 init_lexer();
1526
1527 /* now parse the script */
1528
91487cfc 1529 SETERRNO(0,SS$_NORMAL);
3280af22 1530 PL_error_count = 0;
bf4acbe4
GS
1531#ifdef MACOS_TRADITIONAL
1532 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1533 if (PL_minus_c)
1534 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1535 else {
1536 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1537 MacPerl_MPWFileName(PL_origfilename));
1538 }
1539 }
1540#else
3280af22
NIS
1541 if (yyparse() || PL_error_count) {
1542 if (PL_minus_c)
cea2e8a9 1543 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1544 else {
cea2e8a9 1545 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1546 PL_origfilename);
6224f72b
GS
1547 }
1548 }
bf4acbe4 1549#endif
57843af0 1550 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1551 PL_curstash = PL_defstash;
1552 PL_preprocess = FALSE;
1553 if (PL_e_script) {
1554 SvREFCNT_dec(PL_e_script);
1555 PL_e_script = Nullsv;
6224f72b
GS
1556 }
1557
8bfdd7d9
HS
1558/*
1559 Not sure that this is still the right place to do this now that we
1560 no longer use PL_nrs. HVDS 2001/09/09
1561*/
864dbfa3 1562 sv_setsv(get_sv("/", TRUE), PL_rs);
8bfdd7d9 1563
3280af22 1564 if (PL_do_undump)
6224f72b
GS
1565 my_unexec();
1566
57843af0
GS
1567 if (isWARN_ONCE) {
1568 SAVECOPFILE(PL_curcop);
1569 SAVECOPLINE(PL_curcop);
3280af22 1570 gv_check(PL_defstash);
57843af0 1571 }
6224f72b
GS
1572
1573 LEAVE;
1574 FREETMPS;
1575
1576#ifdef MYMALLOC
1577 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1578 dump_mstats("after compilation:");
1579#endif
1580
1581 ENTER;
3280af22 1582 PL_restartop = 0;
312caa8e 1583 return NULL;
6224f72b
GS
1584}
1585
954c1994
GS
1586/*
1587=for apidoc perl_run
1588
1589Tells a Perl interpreter to run. See L<perlembed>.
1590
1591=cut
1592*/
1593
6224f72b 1594int
0cb96387 1595perl_run(pTHXx)
6224f72b 1596{
6224f72b 1597 I32 oldscope;
14dd3ad8 1598 int ret = 0;
db36c5a1 1599 dJMPENV;
4d1ff10f 1600#ifdef USE_5005THREADS
cea2e8a9
GS
1601 dTHX;
1602#endif
6224f72b 1603
3280af22 1604 oldscope = PL_scopestack_ix;
96e176bf
CL
1605#ifdef VMS
1606 VMSISH_HUSHED = 0;
1607#endif
6224f72b 1608
14dd3ad8 1609#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1610 redo_body:
14dd3ad8
GS
1611 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1612#else
1613 JMPENV_PUSH(ret);
1614#endif
6224f72b
GS
1615 switch (ret) {
1616 case 1:
1617 cxstack_ix = -1; /* start context stack again */
312caa8e 1618 goto redo_body;
14dd3ad8
GS
1619 case 0: /* normal completion */
1620#ifndef PERL_FLEXIBLE_EXCEPTIONS
1621 redo_body:
1622 run_body(oldscope);
1623#endif
1624 /* FALL THROUGH */
1625 case 2: /* my_exit() */
3280af22 1626 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1627 LEAVE;
1628 FREETMPS;
3280af22 1629 PL_curstash = PL_defstash;
3a1ee7e8 1630 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
1631 PL_endav && !PL_minus_c)
1632 call_list(oldscope, PL_endav);
6224f72b
GS
1633#ifdef MYMALLOC
1634 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1635 dump_mstats("after execution: ");
1636#endif
14dd3ad8
GS
1637 ret = STATUS_NATIVE_EXPORT;
1638 break;
6224f72b 1639 case 3:
312caa8e
CS
1640 if (PL_restartop) {
1641 POPSTACK_TO(PL_mainstack);
1642 goto redo_body;
6224f72b 1643 }
bf49b057 1644 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1645 FREETMPS;
14dd3ad8
GS
1646 ret = 1;
1647 break;
6224f72b
GS
1648 }
1649
14dd3ad8
GS
1650 JMPENV_POP;
1651 return ret;
312caa8e
CS
1652}
1653
14dd3ad8 1654#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1655STATIC void *
14dd3ad8 1656S_vrun_body(pTHX_ va_list args)
312caa8e 1657{
312caa8e
CS
1658 I32 oldscope = va_arg(args, I32);
1659
14dd3ad8
GS
1660 return run_body(oldscope);
1661}
1662#endif
1663
1664
1665STATIC void *
1666S_run_body(pTHX_ I32 oldscope)
1667{
6224f72b 1668 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1669 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1670
3280af22 1671 if (!PL_restartop) {
6224f72b
GS
1672 DEBUG_x(dump_all());
1673 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1674 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1675 PTR2UV(thr)));
6224f72b 1676
3280af22 1677 if (PL_minus_c) {
bf4acbe4 1678#ifdef MACOS_TRADITIONAL
e69a2255
JH
1679 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1680 (gMacPerl_ErrorFormat ? "# " : ""),
1681 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1682#else
bf49b057 1683 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1684#endif
6224f72b
GS
1685 my_exit(0);
1686 }
3280af22 1687 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1688 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1689 if (PL_initav)
1690 call_list(oldscope, PL_initav);
6224f72b
GS
1691 }
1692
1693 /* do it */
1694
3280af22 1695 if (PL_restartop) {
533c011a 1696 PL_op = PL_restartop;
3280af22 1697 PL_restartop = 0;
cea2e8a9 1698 CALLRUNOPS(aTHX);
6224f72b 1699 }
3280af22
NIS
1700 else if (PL_main_start) {
1701 CvDEPTH(PL_main_cv) = 1;
533c011a 1702 PL_op = PL_main_start;
cea2e8a9 1703 CALLRUNOPS(aTHX);
6224f72b
GS
1704 }
1705
f6b3007c
JH
1706 my_exit(0);
1707 /* NOTREACHED */
312caa8e 1708 return NULL;
6224f72b
GS
1709}
1710
954c1994 1711/*
ccfc67b7
JH
1712=head1 SV Manipulation Functions
1713
954c1994
GS
1714=for apidoc p||get_sv
1715
1716Returns the SV of the specified Perl scalar. If C<create> is set and the
1717Perl variable does not exist then it will be created. If C<create> is not
1718set and the variable does not exist then NULL is returned.
1719
1720=cut
1721*/
1722
6224f72b 1723SV*
864dbfa3 1724Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1725{
1726 GV *gv;
4d1ff10f 1727#ifdef USE_5005THREADS
6224f72b
GS
1728 if (name[1] == '\0' && !isALPHA(name[0])) {
1729 PADOFFSET tmp = find_threadsv(name);
411caa50 1730 if (tmp != NOT_IN_PAD)
6224f72b 1731 return THREADSV(tmp);
6224f72b 1732 }
4d1ff10f 1733#endif /* USE_5005THREADS */
6224f72b
GS
1734 gv = gv_fetchpv(name, create, SVt_PV);
1735 if (gv)
1736 return GvSV(gv);
1737 return Nullsv;
1738}
1739
954c1994 1740/*
ccfc67b7
JH
1741=head1 Array Manipulation Functions
1742
954c1994
GS
1743=for apidoc p||get_av
1744
1745Returns the AV of the specified Perl array. If C<create> is set and the
1746Perl variable does not exist then it will be created. If C<create> is not
1747set and the variable does not exist then NULL is returned.
1748
1749=cut
1750*/
1751
6224f72b 1752AV*
864dbfa3 1753Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1754{
1755 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1756 if (create)
1757 return GvAVn(gv);
1758 if (gv)
1759 return GvAV(gv);
1760 return Nullav;
1761}
1762
954c1994 1763/*
ccfc67b7
JH
1764=head1 Hash Manipulation Functions
1765
954c1994
GS
1766=for apidoc p||get_hv
1767
1768Returns the HV of the specified Perl hash. If C<create> is set and the
1769Perl variable does not exist then it will be created. If C<create> is not
1770set and the variable does not exist then NULL is returned.
1771
1772=cut
1773*/
1774
6224f72b 1775HV*
864dbfa3 1776Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1777{
a0d0e21e
LW
1778 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1779 if (create)
1780 return GvHVn(gv);
1781 if (gv)
1782 return GvHV(gv);
1783 return Nullhv;
1784}
1785
954c1994 1786/*
ccfc67b7
JH
1787=head1 CV Manipulation Functions
1788
954c1994
GS
1789=for apidoc p||get_cv
1790
1791Returns the CV of the specified Perl subroutine. If C<create> is set and
1792the Perl subroutine does not exist then it will be declared (which has the
1793same effect as saying C<sub name;>). If C<create> is not set and the
1794subroutine does not exist then NULL is returned.
1795
1796=cut
1797*/
1798
a0d0e21e 1799CV*
864dbfa3 1800Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1801{
1802 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1803 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1804 /* XXX this is probably not what they think they're getting.
1805 * It has the same effect as "sub name;", i.e. just a forward
1806 * declaration! */
8ebc5c01 1807 if (create && !GvCVu(gv))
774d564b 1808 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1809 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1810 Nullop,
a0d0e21e
LW
1811 Nullop);
1812 if (gv)
8ebc5c01 1813 return GvCVu(gv);
a0d0e21e
LW
1814 return Nullcv;
1815}
1816
79072805
LW
1817/* Be sure to refetch the stack pointer after calling these routines. */
1818
954c1994 1819/*
ccfc67b7
JH
1820
1821=head1 Callback Functions
1822
954c1994
GS
1823=for apidoc p||call_argv
1824
1825Performs a callback to the specified Perl sub. See L<perlcall>.
1826
1827=cut
1828*/
1829
a0d0e21e 1830I32
864dbfa3 1831Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1832
8ac85365
NIS
1833 /* See G_* flags in cop.h */
1834 /* null terminated arg list */
8990e307 1835{
a0d0e21e 1836 dSP;
8990e307 1837
924508f0 1838 PUSHMARK(SP);
a0d0e21e 1839 if (argv) {
8990e307 1840 while (*argv) {
a0d0e21e 1841 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1842 argv++;
1843 }
a0d0e21e 1844 PUTBACK;
8990e307 1845 }
864dbfa3 1846 return call_pv(sub_name, flags);
8990e307
LW
1847}
1848
954c1994
GS
1849/*
1850=for apidoc p||call_pv
1851
1852Performs a callback to the specified Perl sub. See L<perlcall>.
1853
1854=cut
1855*/
1856
a0d0e21e 1857I32
864dbfa3 1858Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1859 /* name of the subroutine */
1860 /* See G_* flags in cop.h */
a0d0e21e 1861{
864dbfa3 1862 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1863}
1864
954c1994
GS
1865/*
1866=for apidoc p||call_method
1867
1868Performs a callback to the specified Perl method. The blessed object must
1869be on the stack. See L<perlcall>.
1870
1871=cut
1872*/
1873
a0d0e21e 1874I32
864dbfa3 1875Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1876 /* name of the subroutine */
1877 /* See G_* flags in cop.h */
a0d0e21e 1878{
968b3946 1879 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1880}
1881
1882/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1883/*
1884=for apidoc p||call_sv
1885
1886Performs a callback to the Perl sub whose name is in the SV. See
1887L<perlcall>.
1888
1889=cut
1890*/
1891
a0d0e21e 1892I32
864dbfa3 1893Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1894 /* See G_* flags in cop.h */
a0d0e21e 1895{
924508f0 1896 dSP;
a0d0e21e 1897 LOGOP myop; /* fake syntax tree node */
968b3946 1898 UNOP method_op;
aa689395 1899 I32 oldmark;
13689cfe 1900 volatile I32 retval = 0;
a0d0e21e 1901 I32 oldscope;
54310121 1902 bool oldcatch = CATCH_GET;
6224f72b 1903 int ret;
533c011a 1904 OP* oldop = PL_op;
db36c5a1 1905 dJMPENV;
1e422769 1906
a0d0e21e
LW
1907 if (flags & G_DISCARD) {
1908 ENTER;
1909 SAVETMPS;
1910 }
1911
aa689395 1912 Zero(&myop, 1, LOGOP);
54310121 1913 myop.op_next = Nullop;
f51d4af5 1914 if (!(flags & G_NOARGS))
aa689395 1915 myop.op_flags |= OPf_STACKED;
54310121
PP
1916 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1917 (flags & G_ARRAY) ? OPf_WANT_LIST :
1918 OPf_WANT_SCALAR);
462e5cf6 1919 SAVEOP();
533c011a 1920 PL_op = (OP*)&myop;
aa689395 1921
3280af22
NIS
1922 EXTEND(PL_stack_sp, 1);
1923 *++PL_stack_sp = sv;
aa689395 1924 oldmark = TOPMARK;
3280af22 1925 oldscope = PL_scopestack_ix;
a0d0e21e 1926
3280af22 1927 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1928 /* Handle first BEGIN of -d. */
3280af22 1929 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1930 /* Try harder, since this may have been a sighandler, thus
1931 * curstash may be meaningless. */
3280af22 1932 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1933 && !(flags & G_NODEBUG))
533c011a 1934 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1935
968b3946
GS
1936 if (flags & G_METHOD) {
1937 Zero(&method_op, 1, UNOP);
1938 method_op.op_next = PL_op;
1939 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1940 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1941 PL_op = (OP*)&method_op;
968b3946
GS
1942 }
1943
312caa8e 1944 if (!(flags & G_EVAL)) {
0cdb2077 1945 CATCH_SET(TRUE);
14dd3ad8 1946 call_body((OP*)&myop, FALSE);
312caa8e 1947 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1948 CATCH_SET(oldcatch);
312caa8e
CS
1949 }
1950 else {
d78bda3d 1951 myop.op_other = (OP*)&myop;
3280af22 1952 PL_markstack_ptr--;
4633a7c4
LW
1953 /* we're trying to emulate pp_entertry() here */
1954 {
c09156bb 1955 register PERL_CONTEXT *cx;
54310121 1956 I32 gimme = GIMME_V;
ac27b0f5 1957
4633a7c4
LW
1958 ENTER;
1959 SAVETMPS;
ac27b0f5 1960
968b3946 1961 push_return(Nullop);
1d76a5c3 1962 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1963 PUSHEVAL(cx, 0, 0);
533c011a 1964 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1965
faef0170 1966 PL_in_eval = EVAL_INEVAL;
4633a7c4 1967 if (flags & G_KEEPERR)
faef0170 1968 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1969 else
38a03e6e 1970 sv_setpv(ERRSV,"");
4633a7c4 1971 }
3280af22 1972 PL_markstack_ptr++;
a0d0e21e 1973
14dd3ad8
GS
1974#ifdef PERL_FLEXIBLE_EXCEPTIONS
1975 redo_body:
1976 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1977 (OP*)&myop, FALSE);
14dd3ad8
GS
1978#else
1979 JMPENV_PUSH(ret);
1980#endif
6224f72b
GS
1981 switch (ret) {
1982 case 0:
14dd3ad8
GS
1983#ifndef PERL_FLEXIBLE_EXCEPTIONS
1984 redo_body:
1985 call_body((OP*)&myop, FALSE);
1986#endif
312caa8e
CS
1987 retval = PL_stack_sp - (PL_stack_base + oldmark);
1988 if (!(flags & G_KEEPERR))
1989 sv_setpv(ERRSV,"");
a0d0e21e 1990 break;
6224f72b 1991 case 1:
f86702cc 1992 STATUS_ALL_FAILURE;
a0d0e21e 1993 /* FALL THROUGH */
6224f72b 1994 case 2:
a0d0e21e 1995 /* my_exit() was called */
3280af22 1996 PL_curstash = PL_defstash;
a0d0e21e 1997 FREETMPS;
14dd3ad8 1998 JMPENV_POP;
cc3604b1 1999 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2000 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2001 my_exit_jump();
a0d0e21e 2002 /* NOTREACHED */
6224f72b 2003 case 3:
3280af22 2004 if (PL_restartop) {
533c011a 2005 PL_op = PL_restartop;
3280af22 2006 PL_restartop = 0;
312caa8e 2007 goto redo_body;
a0d0e21e 2008 }
3280af22 2009 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2010 if (flags & G_ARRAY)
2011 retval = 0;
2012 else {
2013 retval = 1;
3280af22 2014 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2015 }
312caa8e 2016 break;
a0d0e21e 2017 }
a0d0e21e 2018
3280af22 2019 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2020 SV **newsp;
2021 PMOP *newpm;
2022 I32 gimme;
c09156bb 2023 register PERL_CONTEXT *cx;
a0a2876f
LW
2024 I32 optype;
2025
2026 POPBLOCK(cx,newpm);
2027 POPEVAL(cx);
2028 pop_return();
3280af22 2029 PL_curpm = newpm;
a0a2876f 2030 LEAVE;
a0d0e21e 2031 }
14dd3ad8 2032 JMPENV_POP;
a0d0e21e 2033 }
1e422769 2034
a0d0e21e 2035 if (flags & G_DISCARD) {
3280af22 2036 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2037 retval = 0;
2038 FREETMPS;
2039 LEAVE;
2040 }
533c011a 2041 PL_op = oldop;
a0d0e21e
LW
2042 return retval;
2043}
2044
14dd3ad8 2045#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 2046STATIC void *
14dd3ad8 2047S_vcall_body(pTHX_ va_list args)
312caa8e
CS
2048{
2049 OP *myop = va_arg(args, OP*);
2050 int is_eval = va_arg(args, int);
2051
14dd3ad8 2052 call_body(myop, is_eval);
312caa8e
CS
2053 return NULL;
2054}
14dd3ad8 2055#endif
312caa8e
CS
2056
2057STATIC void
14dd3ad8 2058S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 2059{
312caa8e
CS
2060 if (PL_op == myop) {
2061 if (is_eval)
f807eda9 2062 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2063 else
f807eda9 2064 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2065 }
2066 if (PL_op)
cea2e8a9 2067 CALLRUNOPS(aTHX);
312caa8e
CS
2068}
2069
6e72f9df 2070/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2071
954c1994
GS
2072/*
2073=for apidoc p||eval_sv
2074
2075Tells Perl to C<eval> the string in the SV.
2076
2077=cut
2078*/
2079
a0d0e21e 2080I32
864dbfa3 2081Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2082
8ac85365 2083 /* See G_* flags in cop.h */
a0d0e21e 2084{
924508f0 2085 dSP;
a0d0e21e 2086 UNOP myop; /* fake syntax tree node */
8fa7f367 2087 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2088 volatile I32 retval = 0;
4633a7c4 2089 I32 oldscope;
6224f72b 2090 int ret;
533c011a 2091 OP* oldop = PL_op;
db36c5a1 2092 dJMPENV;
84902520 2093
4633a7c4
LW
2094 if (flags & G_DISCARD) {
2095 ENTER;
2096 SAVETMPS;
2097 }
2098
462e5cf6 2099 SAVEOP();
533c011a
NIS
2100 PL_op = (OP*)&myop;
2101 Zero(PL_op, 1, UNOP);
3280af22
NIS
2102 EXTEND(PL_stack_sp, 1);
2103 *++PL_stack_sp = sv;
2104 oldscope = PL_scopestack_ix;
79072805 2105
4633a7c4
LW
2106 if (!(flags & G_NOARGS))
2107 myop.op_flags = OPf_STACKED;
79072805 2108 myop.op_next = Nullop;
6e72f9df 2109 myop.op_type = OP_ENTEREVAL;
54310121
PP
2110 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2111 (flags & G_ARRAY) ? OPf_WANT_LIST :
2112 OPf_WANT_SCALAR);
6e72f9df
PP
2113 if (flags & G_KEEPERR)
2114 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2115
14dd3ad8 2116#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 2117 redo_body:
14dd3ad8 2118 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 2119 (OP*)&myop, TRUE);
14dd3ad8
GS
2120#else
2121 JMPENV_PUSH(ret);
2122#endif
6224f72b
GS
2123 switch (ret) {
2124 case 0:
14dd3ad8
GS
2125#ifndef PERL_FLEXIBLE_EXCEPTIONS
2126 redo_body:
2127 call_body((OP*)&myop,TRUE);
2128#endif
312caa8e
CS
2129 retval = PL_stack_sp - (PL_stack_base + oldmark);
2130 if (!(flags & G_KEEPERR))
2131 sv_setpv(ERRSV,"");
4633a7c4 2132 break;
6224f72b 2133 case 1:
f86702cc 2134 STATUS_ALL_FAILURE;
4633a7c4 2135 /* FALL THROUGH */
6224f72b 2136 case 2:
4633a7c4 2137 /* my_exit() was called */
3280af22 2138 PL_curstash = PL_defstash;
4633a7c4 2139 FREETMPS;
14dd3ad8 2140 JMPENV_POP;
cc3604b1 2141 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2142 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2143 my_exit_jump();
4633a7c4 2144 /* NOTREACHED */
6224f72b 2145 case 3:
3280af22 2146 if (PL_restartop) {
533c011a 2147 PL_op = PL_restartop;
3280af22 2148 PL_restartop = 0;
312caa8e 2149 goto redo_body;
4633a7c4 2150 }
3280af22 2151 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2152 if (flags & G_ARRAY)
2153 retval = 0;
2154 else {
2155 retval = 1;
3280af22 2156 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2157 }
312caa8e 2158 break;
4633a7c4
LW
2159 }
2160
14dd3ad8 2161 JMPENV_POP;
4633a7c4 2162 if (flags & G_DISCARD) {
3280af22 2163 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2164 retval = 0;
2165 FREETMPS;
2166 LEAVE;
2167 }
533c011a 2168 PL_op = oldop;
4633a7c4
LW
2169 return retval;
2170}
2171
954c1994
GS
2172/*
2173=for apidoc p||eval_pv
2174
2175Tells Perl to C<eval> the given string and return an SV* result.
2176
2177=cut
2178*/
2179
137443ea 2180SV*
864dbfa3 2181Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2182{
2183 dSP;
2184 SV* sv = newSVpv(p, 0);
2185
864dbfa3 2186 eval_sv(sv, G_SCALAR);
137443ea
PP
2187 SvREFCNT_dec(sv);
2188
2189 SPAGAIN;
2190 sv = POPs;
2191 PUTBACK;
2192
2d8e6c8d
GS
2193 if (croak_on_error && SvTRUE(ERRSV)) {
2194 STRLEN n_a;
cea2e8a9 2195 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2196 }
137443ea
PP
2197
2198 return sv;
2199}
2200
4633a7c4
LW
2201/* Require a module. */
2202
954c1994 2203/*
ccfc67b7
JH
2204=head1 Embedding Functions
2205
954c1994
GS
2206=for apidoc p||require_pv
2207
7d3fb230
BS
2208Tells Perl to C<require> the file named by the string argument. It is
2209analogous to the Perl code C<eval "require '$file'">. It's even
2210implemented that way; consider using Perl_load_module instead.
954c1994 2211
7d3fb230 2212=cut */
954c1994 2213
4633a7c4 2214void
864dbfa3 2215Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2216{
d3acc0f7
JP
2217 SV* sv;
2218 dSP;
e788e7d3 2219 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2220 PUTBACK;
2221 sv = sv_newmortal();
4633a7c4
LW
2222 sv_setpv(sv, "require '");
2223 sv_catpv(sv, pv);
2224 sv_catpv(sv, "'");
864dbfa3 2225 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2226 SPAGAIN;
2227 POPSTACK;
79072805
LW
2228}
2229
79072805 2230void
864dbfa3 2231Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2232{
2233 register GV *gv;
2234
155aba94 2235 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2236 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2237}
2238
76e3520e 2239STATIC void
cea2e8a9 2240S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2241{
ab821d7f 2242 /* This message really ought to be max 23 lines.
75c72d73 2243 * Removed -h because the user already knows that option. Others? */
fb73857a 2244
76e3520e 2245 static char *usage_msg[] = {
fb73857a
PP
2246"-0[octal] specify record separator (\\0, if no argument)",
2247"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2248"-C enable native wide character system interfaces",
1950ee41 2249"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2250"-d[:debugger] run program under debugger",
2251"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2252"-e 'command' one line of program (several -e's allowed, omit programfile)",
2253"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2254"-i[extension] edit <> files in place (makes backup if extension supplied)",
2255"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2256"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2257"-[mM][-]module execute `use/no module...' before executing program",
2258"-n assume 'while (<>) { ... }' loop around program",
2259"-p assume loop like -n but print line also, like sed",
2260"-P run program through C preprocessor before compilation",
2261"-s enable rudimentary parsing for switches after programfile",
2262"-S look for programfile using PATH environment variable",
2263"-T enable tainting checks",
9cbc33e8 2264"-t enable tainting warnings",
aac3bd0d 2265"-u dump core after parsing program",
fb73857a 2266"-U allow unsafe operations",
aac3bd0d
GS
2267"-v print version, subversion (includes VERY IMPORTANT perl info)",
2268"-V[:variable] print configuration summary (or a single Config.pm variable)",
2269"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2270"-W enable all warnings",
2271"-X disable all warnings",
fb73857a
PP
2272"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2273"\n",
2274NULL
2275};
76e3520e 2276 char **p = usage_msg;
fb73857a 2277
b0e47665
GS
2278 PerlIO_printf(PerlIO_stdout(),
2279 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2280 name);
fb73857a 2281 while (*p)
b0e47665 2282 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2283}
2284
79072805
LW
2285/* This routine handles any switches that can be given during run */
2286
2287char *
864dbfa3 2288Perl_moreswitches(pTHX_ char *s)
79072805 2289{
ba210ebe 2290 STRLEN numlen;
c07a80fd 2291 U32 rschar;
79072805
LW
2292
2293 switch (*s) {
2294 case '0':
a863c7d1 2295 {
53305cf1
NC
2296 I32 flags = 0;
2297 numlen = 4;
2298 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2299 SvREFCNT_dec(PL_rs);
c07a80fd 2300 if (rschar & ~((U8)~0))
8bfdd7d9 2301 PL_rs = &PL_sv_undef;
c07a80fd 2302 else if (!rschar && numlen >= 2)
8bfdd7d9 2303 PL_rs = newSVpvn("", 0);
c07a80fd 2304 else {
eb160463 2305 char ch = (char)rschar;
8bfdd7d9 2306 PL_rs = newSVpvn(&ch, 1);
79072805
LW
2307 }
2308 return s + numlen;
a863c7d1 2309 }
46487f74
GS
2310 case 'C':
2311 PL_widesyscalls = TRUE;
2312 s++;
2313 return s;
2304df62 2314 case 'F':
3280af22 2315 PL_minus_F = TRUE;
ebce5377
RGS
2316 PL_splitstr = ++s;
2317 while (*s && !isSPACE(*s)) ++s;
2318 *s = '\0';
2319 PL_splitstr = savepv(PL_splitstr);
2304df62 2320 return s;
79072805 2321 case 'a':
3280af22 2322 PL_minus_a = TRUE;
79072805
LW
2323 s++;
2324 return s;
2325 case 'c':
3280af22 2326 PL_minus_c = TRUE;
79072805
LW
2327 s++;
2328 return s;
2329 case 'd':
bbce6d69 2330 forbid_setid("-d");
4633a7c4 2331 s++;
70c94a19
RR
2332 /* The following permits -d:Mod to accepts arguments following an =
2333 in the fashion that -MSome::Mod does. */
2334 if (*s == ':' || *s == '=') {
2335 char *start;
2336 SV *sv;
2337 sv = newSVpv("use Devel::", 0);
2338 start = ++s;
2339 /* We now allow -d:Module=Foo,Bar */
2340 while(isALNUM(*s) || *s==':') ++s;
2341 if (*s != '=')
2342 sv_catpv(sv, start);
2343 else {
2344 sv_catpvn(sv, start, s-start);
2345 sv_catpv(sv, " split(/,/,q{");
2346 sv_catpv(sv, ++s);
2347 sv_catpv(sv, "})");
2348 }
4633a7c4 2349 s += strlen(s);
70c94a19 2350 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2351 }
ed094faf 2352 if (!PL_perldb) {
3280af22 2353 PL_perldb = PERLDB_ALL;
a0d0e21e 2354 init_debugger();
ed094faf 2355 }
79072805
LW
2356 return s;
2357 case 'D':
0453d815 2358 {
79072805 2359#ifdef DEBUGGING
bbce6d69 2360 forbid_setid("-D");
79072805 2361 if (isALPHA(s[1])) {
04932ac8 2362 /* if adding extra options, remember to update DEBUG_MASK */
46187eeb 2363 static char debopts[] = "psltocPmfrxuLHXDSTRJvC";
79072805
LW
2364 char *d;
2365
93a17b20 2366 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2367 PL_debug |= 1 << (d - debopts);
79072805
LW
2368 }
2369 else {
3280af22 2370 PL_debug = atoi(s+1);
79072805
LW
2371 for (s++; isDIGIT(*s); s++) ;
2372 }
2ac72d6e 2373#ifdef EBCDIC
12a43e32
JH
2374 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2375 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2376 "-Dp not implemented on this platform\n");
2377#endif
aea4f609 2378 PL_debug |= DEBUG_TOP_FLAG;
12a43e32 2379#else /* !DEBUGGING */
0453d815 2380 if (ckWARN_d(WARN_DEBUGGING))
9014280d 2381 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
0453d815 2382 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2383 for (s++; isALNUM(*s); s++) ;
79072805
LW
2384#endif
2385 /*SUPPRESS 530*/
2386 return s;
0453d815 2387 }
4633a7c4 2388 case 'h':
ac27b0f5 2389 usage(PL_origargv[0]);
7ca617d0 2390 my_exit(0);
79072805 2391 case 'i':
3280af22
NIS
2392 if (PL_inplace)
2393 Safefree(PL_inplace);
c030f24b
GH
2394#if defined(__CYGWIN__) /* do backup extension automagically */
2395 if (*(s+1) == '\0') {
2396 PL_inplace = savepv(".bak");
2397 return s+1;
2398 }
2399#endif /* __CYGWIN__ */
3280af22 2400 PL_inplace = savepv(s+1);
79072805 2401 /*SUPPRESS 530*/
3280af22 2402 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2403 if (*s) {
fb73857a 2404 *s++ = '\0';
7b8d334a
GS
2405 if (*s == '-') /* Additional switches on #! line. */
2406 s++;
2407 }
fb73857a 2408 return s;
4e49a025 2409 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2410 forbid_setid("-I");
fb73857a
PP
2411 ++s;
2412 while (*s && isSPACE(*s))
2413 ++s;
2414 if (*s) {
774d564b 2415 char *e, *p;
0df16ed7
GS
2416 p = s;
2417 /* ignore trailing spaces (possibly followed by other switches) */
2418 do {
2419 for (e = p; *e && !isSPACE(*e); e++) ;
2420 p = e;
2421 while (isSPACE(*p))
2422 p++;
2423 } while (*p && *p != '-');
2424 e = savepvn(s, e-s);
9c8a64f0 2425 incpush(e, TRUE, TRUE);
0df16ed7
GS
2426 Safefree(e);
2427 s = p;
2428 if (*s == '-')
2429 s++;
79072805
LW
2430 }
2431 else
a67e862a 2432 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2433 return s;
79072805 2434 case 'l':
3280af22 2435 PL_minus_l = TRUE;
79072805 2436 s++;
7889fe52
NIS
2437 if (PL_ors_sv) {
2438 SvREFCNT_dec(PL_ors_sv);
2439 PL_ors_sv = Nullsv;
2440 }
79072805 2441 if (isDIGIT(*s)) {
53305cf1 2442 I32 flags = 0;
7889fe52 2443 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
2444 numlen = 3 + (*s == '0');
2445 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
2446 s += numlen;
2447 }
2448 else {
8bfdd7d9 2449 if (RsPARA(PL_rs)) {
7889fe52
NIS
2450 PL_ors_sv = newSVpvn("\n\n",2);
2451 }
2452 else {
8bfdd7d9 2453 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2454 }
79072805
LW
2455 }
2456 return s;
1a30305b 2457 case 'M':
bbce6d69 2458 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2459 /* FALL THROUGH */
2460 case 'm':
bbce6d69 2461 forbid_setid("-m"); /* XXX ? */
1a30305b 2462 if (*++s) {
a5f75d66 2463 char *start;
11343788 2464 SV *sv;
a5f75d66
AD
2465 char *use = "use ";
2466 /* -M-foo == 'no foo' */
2467 if (*s == '-') { use = "no "; ++s; }
11343788 2468 sv = newSVpv(use,0);
a5f75d66 2469 start = s;
1a30305b 2470 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2471 while(isALNUM(*s) || *s==':') ++s;
2472 if (*s != '=') {
11343788 2473 sv_catpv(sv, start);
c07a80fd
PP
2474 if (*(start-1) == 'm') {
2475 if (*s != '\0')
cea2e8a9 2476 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2477 sv_catpv( sv, " ()");
c07a80fd
PP
2478 }
2479 } else {
6df41af2 2480 if (s == start)
be98fb35
GS
2481 Perl_croak(aTHX_ "Module name required with -%c option",
2482 s[-1]);
11343788
MB
2483 sv_catpvn(sv, start, s-start);
2484 sv_catpv(sv, " split(/,/,q{");
2485 sv_catpv(sv, ++s);
2486 sv_catpv(sv, "})");
c07a80fd 2487 }
1a30305b 2488 s += strlen(s);
5c831c24 2489 if (!PL_preambleav)
3280af22
NIS
2490 PL_preambleav = newAV();
2491 av_push(PL_preambleav, sv);
1a30305b
PP
2492 }
2493 else
cea2e8a9 2494 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2495 return s;
79072805 2496 case 'n':
3280af22 2497 PL_minus_n = TRUE;
79072805
LW
2498 s++;
2499 return s;
2500 case 'p':
3280af22 2501 PL_minus_p = TRUE;
79072805
LW
2502 s++;
2503 return s;
2504 case 's':
bbce6d69 2505 forbid_setid("-s");
3280af22 2506 PL_doswitches = TRUE;
79072805
LW
2507 s++;
2508 return s;
6537fe72
MS
2509 case 't':
2510 if (!PL_tainting)
2511 Perl_croak(aTHX_ "Too late for \"-t\" option");
2512 s++;
2513 return s;
463ee0b2 2514 case 'T':
3280af22 2515 if (!PL_tainting)
cea2e8a9 2516 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2517 s++;
2518 return s;
79072805 2519 case 'u':
bf4acbe4
GS
2520#ifdef MACOS_TRADITIONAL
2521 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2522#endif
3280af22 2523 PL_do_undump = TRUE;
79072805
LW
2524 s++;
2525 return s;
2526 case 'U':
3280af22 2527 PL_unsafe = TRUE;
79072805
LW
2528 s++;
2529 return s;
2530 case 'v':
8e9464f1 2531#if !defined(DGUX)
b0e47665 2532 PerlIO_printf(PerlIO_stdout(),
d2560b70 2533 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2534 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2535#else /* DGUX */
2536/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2537 PerlIO_printf(PerlIO_stdout(),
2538 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2539 PerlIO_printf(PerlIO_stdout(),
2540 Perl_form(aTHX_ " built under %s at %s %s\n",
2541 OSNAME, __DATE__, __TIME__));
2542 PerlIO_printf(PerlIO_stdout(),
2543 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2544 OSVERS));
8e9464f1
JH
2545#endif /* !DGUX */
2546
fb73857a
PP
2547#if defined(LOCAL_PATCH_COUNT)
2548 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2549 PerlIO_printf(PerlIO_stdout(),
2550 "\n(with %d registered patch%s, "
2551 "see perl -V for more detail)",
2552 (int)LOCAL_PATCH_COUNT,
2553 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2554#endif
1a30305b 2555
b0e47665 2556 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2557 "\n\nCopyright 1987-2002, Larry Wall\n");
eae9c151
JH
2558#ifdef MACOS_TRADITIONAL
2559 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2560 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 2561 "maintained by Chris Nandor\n");
eae9c151 2562#endif
79072805 2563#ifdef MSDOS
b0e47665
GS
2564 PerlIO_printf(PerlIO_stdout(),
2565 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2566#endif
2567#ifdef DJGPP
b0e47665
GS
2568 PerlIO_printf(PerlIO_stdout(),
2569 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2570 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2571#endif
79072805 2572#ifdef OS2
b0e47665
GS
2573 PerlIO_printf(PerlIO_stdout(),
2574 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 2575 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2576#endif
79072805 2577#ifdef atarist
b0e47665
GS
2578 PerlIO_printf(PerlIO_stdout(),
2579 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2580#endif
a3f9223b 2581#ifdef __BEOS__
b0e47665
GS
2582 PerlIO_printf(PerlIO_stdout(),
2583 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2584#endif
1d84e8df 2585#ifdef MPE
b0e47665 2586 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2587 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
1d84e8df 2588#endif
9d116dd7 2589#ifdef OEMVS
b0e47665
GS
2590 PerlIO_printf(PerlIO_stdout(),
2591 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2592#endif
495c5fdc 2593#ifdef __VOS__
b0e47665 2594 PerlIO_printf(PerlIO_stdout(),
94efb9fb 2595 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 2596#endif
092bebab 2597#ifdef __OPEN_VM
b0e47665
GS
2598 PerlIO_printf(PerlIO_stdout(),
2599 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2600#endif
a1a0e61e 2601#ifdef POSIX_BC
b0e47665
GS
2602 PerlIO_printf(PerlIO_stdout(),
2603 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2604#endif
61ae2fbf 2605#ifdef __MINT__
b0e47665
GS
2606 PerlIO_printf(PerlIO_stdout(),
2607 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2608#endif
f83d2536 2609#ifdef EPOC
b0e47665 2610 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2611 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 2612#endif
e1caacb4 2613#ifdef UNDER_CE
be3c0a43 2614 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
e1caacb4
JH
2615 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2616 wce_hitreturn();
2617#endif
baed7233
DL
2618#ifdef BINARY_BUILD_NOTICE
2619 BINARY_BUILD_NOTICE;
2620#endif
b0e47665
GS
2621 PerlIO_printf(PerlIO_stdout(),
2622 "\n\
79072805 2623Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2624GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2625Complete documentation for Perl, including FAQ lists, should be found on\n\
2626this system using `man perl' or `perldoc perl'. If you have access to the\n\
2627Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
7ca617d0 2628 my_exit(0);
79072805 2629 case 'w':
599cee73 2630 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2631 PL_dowarn |= G_WARN_ON;
599cee73
PM
2632 s++;
2633 return s;
2634 case 'W':
ac27b0f5 2635 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
2636 if (!specialWARN(PL_compiling.cop_warnings))
2637 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2638 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2639 s++;
2640 return s;
2641 case 'X':
ac27b0f5 2642 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
2643 if (!specialWARN(PL_compiling.cop_warnings))
2644 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2645 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2646 s++;
2647 return s;
a0d0e21e 2648 case '*':
79072805
LW
2649 case ' ':
2650 if (s[1] == '-') /* Additional switches on #! line. */
2651 return s+2;
2652 break;
a0d0e21e 2653 case '-':
79072805 2654 case 0:
51882d45 2655#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2656 case '\r':
2657#endif
79072805
LW
2658 case '\n':
2659 case '\t':
2660 break;
aa689395
PP
2661#ifdef ALTERNATE_SHEBANG
2662 case 'S': /* OS/2 needs -S on "extproc" line. */
2663 break;
2664#endif
a0d0e21e 2665 case 'P':
3280af22 2666 if (PL_preprocess)
a0d0e21e
LW
2667 return s+1;
2668 /* FALL THROUGH */
79072805 2669 default:
cea2e8a9 2670 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2671 }
2672 return Nullch;
2673}
2674
2675/* compliments of Tom Christiansen */
2676
2677/* unexec() can be found in the Gnu emacs distribution */
ee580363 2678/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2679
2680void
864dbfa3 2681Perl_my_unexec(pTHX)
79072805
LW
2682{
2683#ifdef UNEXEC
46fc3d4c
PP
2684 SV* prog;
2685 SV* file;
ee580363 2686 int status = 1;
79072805
LW
2687 extern int etext;
2688
ee580363 2689 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2690 sv_catpv(prog, "/perl");
6b88bc9c 2691 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2692 sv_catpv(file, ".perldump");
79072805 2693
ee580363
GS
2694 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2695 /* unexec prints msg to stderr in case of failure */
6ad3d225 2696 PerlProc_exit(status);
79072805 2697#else
a5f75d66
AD
2698# ifdef VMS
2699# include <lib$routines.h>
2700 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2701# else
79072805 2702 ABORT(); /* for use with undump */
aa689395 2703# endif
a5f75d66 2704#endif
79072805
LW
2705}
2706
cb68f92d
GS
2707/* initialize curinterp */
2708STATIC void
cea2e8a9 2709S_init_interp(pTHX)
cb68f92d
GS
2710{
2711
acfe0abc
GS
2712#ifdef MULTIPLICITY
2713# define PERLVAR(var,type)
2714# define PERLVARA(var,n,type)
2715# if defined(PERL_IMPLICIT_CONTEXT)
2716# if defined(USE_5005THREADS)
2717# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2718# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
2719# else /* !USE_5005THREADS */
2720# define PERLVARI(var,type,init) aTHX->var = init;
2721# define PERLVARIC(var,type,init) aTHX->var = init;
2722# endif /* USE_5005THREADS */
3967c732 2723# else
acfe0abc
GS
2724# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2725# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2726# endif
acfe0abc
GS
2727# include "intrpvar.h"
2728# ifndef USE_5005THREADS
2729# include "thrdvar.h"
2730# endif
2731# undef PERLVAR
2732# undef PERLVARA
2733# undef PERLVARI
2734# undef PERLVARIC
2735#else
2736# define PERLVAR(var,type)
2737# define PERLVARA(var,n,type)
2738# define PERLVARI(var,type,init) PL_##var = init;
2739# define PERLVARIC(var,type,init) PL_##var = init;
2740# include "intrpvar.h"
2741# ifndef USE_5005THREADS
2742# include "thrdvar.h"
2743# endif
2744# undef PERLVAR
2745# undef PERLVARA
2746# undef PERLVARI
2747# undef PERLVARIC
cb68f92d
GS
2748#endif
2749
cb68f92d
GS
2750}
2751
76e3520e 2752STATIC void
cea2e8a9 2753S_init_main_stash(pTHX)
79072805 2754{
463ee0b2 2755 GV *gv;
6e72f9df 2756
3280af22 2757 PL_curstash = PL_defstash = newHV();
79cb57f6 2758 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2759 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2760 SvREFCNT_dec(GvHV(gv));
3280af22 2761 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2762 SvREADONLY_on(gv);
3280af22
NIS
2763 HvNAME(PL_defstash) = savepv("main");
2764 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2765 GvMULTI_on(PL_incgv);
2766 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2767 GvMULTI_on(PL_hintgv);
2768 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2769 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2770 GvMULTI_on(PL_errgv);
2771 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2772 GvMULTI_on(PL_replgv);
cea2e8a9 2773 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2774 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2775 sv_setpvn(ERRSV, "", 0);
3280af22 2776 PL_curstash = PL_defstash;
11faa288 2777 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2778 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2779 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
92d29cee 2780 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2781 /* We must init $/ before switches are processed. */
864dbfa3 2782 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2783}
2784
76e3520e 2785STATIC void
cea2e8a9 2786S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2787{
1b24ed4b
MS
2788 char *quote;
2789 char *code;
2790 char *cpp_discard_flag;
2791 char *perl;
2792
6c4ab083 2793 *fdscript = -1;
79072805 2794
3280af22
NIS
2795 if (PL_e_script) {
2796 PL_origfilename = savepv("-e");
96436eeb 2797 }
6c4ab083
GS
2798 else {
2799 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2800 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2801
2802 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2803 char *s = scriptname + 8;
2804 *fdscript = atoi(s);
2805 while (isDIGIT(*s))
2806 s++;
2807 if (*s) {
2808 scriptname = savepv(s + 1);
3280af22
NIS
2809 Safefree(PL_origfilename);
2810 PL_origfilename = scriptname;
6c4ab083
GS
2811 }
2812 }
2813 }
2814
05ec9bb3 2815 CopFILE_free(PL_curcop);
57843af0 2816 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2817 if (strEQ(PL_origfilename,"-"))
79072805 2818 scriptname = "";
01f988be 2819 if (*fdscript >= 0) {
3280af22 2820 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS
2821# if defined(HAS_FCNTL) && defined(F_SETFD)
2822 if (PL_rsfp)
2823 /* ensure close-on-exec */
2824 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2825# endif
96436eeb 2826 }
3280af22 2827 else if (PL_preprocess) {
46fc3d4c 2828 char *cpp_cfg = CPPSTDIN;
79cb57f6 2829 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2830 SV *cmd = NEWSV(0,0);
2831
2832 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2833 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2834 sv_catpv(cpp, cpp_cfg);
79072805 2835
1b24ed4b
MS
2836# ifndef VMS
2837 sv_catpvn(sv, "-I", 2);
2838 sv_catpv(sv,PRIVLIB_EXP);
2839# endif
46fc3d4c 2840
14953ddc
MB
2841 DEBUG_P(PerlIO_printf(Perl_debug_log,
2842 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2843 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS
2844
2845# if defined(MSDOS) || defined(WIN32) || defined(VMS)
2846 quote = "\"";
2847# else
2848 quote = "'";
2849# endif
2850
2851# ifdef VMS
2852 cpp_discard_flag = "";
2853# else
2854 cpp_discard_flag = "-C";
2855# endif
2856
2857# ifdef OS2
2858 perl = os2_execname(aTHX);
2859# else
2860 perl = PL_origargv[0];
2861# endif
2862
2863
2864 /* This strips off Perl comments which might interfere with
62375a60
NIS
2865 the C pre-processor, including #!. #line directives are
2866 deliberately stripped to avoid confusion with Perl's version
1b24ed4b
MS
2867 of #line. FWP played some golf with it so it will fit
2868 into VMS's 255 character buffer.
2869 */
2870 if( PL_doextract )
2871 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2872 else
2873 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2874
2875 Perl_sv_setpvf(aTHX_ cmd, "\
2876%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
62375a60 2877 perl, quote, code, quote, scriptname, cpp,
1b24ed4b
MS
2878 cpp_discard_flag, sv, CPPMINUS);
2879
3280af22 2880 PL_doextract = FALSE;
1b24ed4b
MS
2881# ifdef IAMSUID /* actually, this is caught earlier */
2882 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2883# ifdef HAS_SETEUID
2884 (void)seteuid(PL_uid); /* musn't stay setuid root */
2885# else
2886# ifdef HAS_SETREUID
2887 (void)setreuid((Uid_t)-1, PL_uid);
2888# else
2889# ifdef HAS_SETRESUID
2890 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2891# else
2892 PerlProc_setuid(PL_uid);
2893# endif
2894# endif
2895# endif
b28d0864 2896 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2897 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805 2898 }
1b24ed4b 2899# endif /* IAMSUID */
0a6c758d 2900
62375a60
NIS
2901 DEBUG_P(PerlIO_printf(Perl_debug_log,
2902 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS
2903 SvPVX(cmd)));
2904
3280af22 2905 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2906 SvREFCNT_dec(cmd);
2907 SvREFCNT_dec(cpp);
79072805
LW
2908 }
2909 else if (!*scriptname) {
bbce6d69 2910 forbid_setid("program input from stdin");
3280af22 2911 PL_rsfp = PerlIO_stdin();
79072805 2912 }
96436eeb 2913 else {
3280af22 2914 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS
2915# if defined(HAS_FCNTL) && defined(F_SETFD)
2916 if (PL_rsfp)
2917 /* ensure close-on-exec */
2918 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2919# endif
96436eeb 2920 }
3280af22 2921 if (!PL_rsfp) {
1b24ed4b
MS
2922# ifdef DOSUID
2923# ifndef IAMSUID /* in case script is not readable before setuid */
2924 if (PL_euid &&
2925 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2926 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2927 {
2928 /* try again */
62375a60
NIS
2929 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2930 BIN_EXP, (int)PERL_REVISION,
1b24ed4b
MS
2931 (int)PERL_VERSION,
2932 (int)PERL_SUBVERSION), PL_origargv);
2933 Perl_croak(aTHX_ "Can't do setuid\n");
2934 }
2935# endif
2936# endif
2937# ifdef IAMSUID
2938 errno = EPERM;
2939 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2940 Strerror(errno));
2941# else
2942 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2943 CopFILE(PL_curcop), Strerror(errno));
2944# endif
13281fa4 2945 }
79072805 2946}
8d063cd8 2947
7b89560d
JH
2948/* Mention
2949 * I_SYSSTATVFS HAS_FSTATVFS
2950 * I_SYSMOUNT
c890dc6c 2951 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2952 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2953 * here so that metaconfig picks them up. */
2954
104d25b7 2955#ifdef IAMSUID
864dbfa3 2956STATIC int
e688b231 2957S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2958{
0545a864
JH
2959 int check_okay = 0; /* able to do all the required sys/libcalls */
2960 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2961/*
ad27e871 2962 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2963 * fstatvfs() is UNIX98.
0545a864 2964 * fstatfs() is 4.3 BSD.
ad27e871 2965 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2966 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2967 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2968 */
2969
6439433f
JH
2970#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2971
2972# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2973 defined(HAS_FSTATVFS)
2974# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2975 struct statvfs stfs;
6439433f 2976
104d25b7
JH
2977 check_okay = fstatvfs(fd, &stfs) == 0;
2978 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2979# endif /* fstatvfs */
ac27b0f5 2980
6439433f
JH
2981# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2982 defined(PERL_MOUNT_NOSUID) && \
2983 defined(HAS_FSTATFS) && \
2984 defined(HAS_STRUCT_STATFS) && \
2985 defined(HAS_STRUCT_STATFS_F_FLAGS)
2986# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2987 struct statfs stfs;
6439433f 2988
104d25b7 2989 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2990 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2991# endif /* fstatfs */
2992
2993# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2994 defined(PERL_MOUNT_NOSUID) && \
2995 defined(HAS_FSTAT) && \
2996 defined(HAS_USTAT) && \
2997 defined(HAS_GETMNT) && \
2998 defined(HAS_STRUCT_FS_DATA) && \
2999 defined(NOSTAT_ONE)
3000# define FD_ON_NOSUID_CHECK_OKAY
c623ac67 3001 Stat_t fdst;
6439433f 3002
0545a864 3003 if (fstat(fd, &fdst) == 0) {
6439433f
JH
3004 struct ustat us;
3005 if (ustat(fdst.st_dev, &us) == 0) {
3006 struct fs_data fsd;
3007 /* NOSTAT_ONE here because we're not examining fields which
3008 * vary between that case and STAT_ONE. */
ad27e871 3009 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
3010 size_t cmplen = sizeof(us.f_fname);
3011 if (sizeof(fsd.fd_req.path) < cmplen)
3012 cmplen = sizeof(fsd.fd_req.path);
3013 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
3014 fdst.st_dev == fsd.fd_req.dev) {
3015 check_okay = 1;
3016 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
3017 }
3018 }
3019 }
3020 }
0545a864 3021 }
6439433f
JH
3022# endif /* fstat+ustat+getmnt */
3023
3024# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3025 defined(HAS_GETMNTENT) && \
3026 defined(HAS_HASMNTOPT) && \
3027 defined(MNTOPT_NOSUID)
3028# define FD_ON_NOSUID_CHECK_OKAY
3029 FILE *mtab = fopen("/etc/mtab", "r");
3030 struct mntent *entry;
c623ac67 3031 Stat_t stb, fsb;
104d25b7
JH
3032
3033 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
3034 while (entry = getmntent(mtab)) {
3035 if (stat(entry->mnt_dir, &fsb) == 0
3036 && fsb.st_dev == stb.st_dev)
3037 {
3038 /* found the filesystem */
3039 check_okay = 1;
3040 if (hasmntopt(entry, MNTOPT_NOSUID))
3041 on_nosuid = 1;
3042 break;
3043 } /* A single fs may well fail its stat(). */
3044 }
104d25b7
JH
3045 }
3046 if (mtab)
6439433f
JH
3047 fclose(mtab);
3048# endif /* getmntent+hasmntopt */
0545a864 3049
ac27b0f5 3050 if (!check_okay)
0545a864 3051 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
3052 return on_nosuid;
3053}
3054#endif /* IAMSUID */
3055
76e3520e 3056STATIC void
cea2e8a9 3057S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 3058{
155aba94 3059#ifdef IAMSUID
96436eeb 3060 int which;
155aba94 3061#endif
96436eeb 3062
13281fa4
LW
3063 /* do we need to emulate setuid on scripts? */
3064
3065 /* This code is for those BSD systems that have setuid #! scripts disabled
3066 * in the kernel because of a security problem. Merely defining DOSUID
3067 * in perl will not fix that problem, but if you have disabled setuid
3068 * scripts in the kernel, this will attempt to emulate setuid and setgid
3069 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
3070 * root version must be called suidperl or sperlN.NNN. If regular perl
3071 * discovers that it has opened a setuid script, it calls suidperl with
3072 * the same argv that it had. If suidperl finds that the script it has
3073 * just opened is NOT setuid root, it sets the effective uid back to the
3074 * uid. We don't just make perl setuid root because that loses the
3075 * effective uid we had before invoking perl, if it was different from the
3076 * uid.
13281fa4
LW
3077 *
3078 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3079 * be defined in suidperl only. suidperl must be setuid root. The
3080 * Configure script will set this up for you if you want it.
3081 */
a687059c 3082
13281fa4 3083#ifdef DOSUID
6e72f9df 3084 char *s, *s2;
a0d0e21e 3085
b28d0864 3086 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 3087 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 3088 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 3089 I32 len;
2d8e6c8d 3090 STRLEN n_a;
13281fa4 3091
a687059c 3092#ifdef IAMSUID
fe14fcc3 3093#ifndef HAS_SETREUID
a687059c
LW
3094 /* On this access check to make sure the directories are readable,
3095 * there is actually a small window that the user could use to make
3096 * filename point to an accessible directory. So there is a faint
3097 * chance that someone could execute a setuid script down in a
3098 * non-accessible directory. I don't know what to do about that.
3099 * But I don't think it's too important. The manual lies when
3100 * it says access() is useful in setuid programs.
3101 */
cc49e20b 3102 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 3103 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
3104#else
3105 /* If we can swap euid and uid, then we can determine access rights
3106 * with a simple stat of the file, and then compare device and
3107 * inode to make sure we did stat() on the same file we opened.
3108 * Then we just have to make sure he or she can execute it.
3109 */
3110 {
c623ac67 3111 Stat_t tmpstatbuf;
a687059c 3112
85e6fe83
LW
3113 if (
3114#ifdef HAS_SETREUID
b28d0864 3115 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
3116#else
3117# if HAS_SETRESUID
b28d0864 3118 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3119# endif
85e6fe83 3120#endif
b28d0864 3121 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3122 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3123 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3124 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3125#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3126 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3127 Perl_croak(aTHX_ "Permission denied");
104d25b7 3128#endif
b28d0864
NIS
3129 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3130 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3131 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3132 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3133 }
85e6fe83
LW
3134 if (
3135#ifdef HAS_SETREUID
b28d0864 3136 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
3137#else
3138# if defined(HAS_SETRESUID)
b28d0864 3139 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3140# endif
85e6fe83 3141#endif
b28d0864 3142 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3143 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3144 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3145 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3146 }
fe14fcc3 3147#endif /* HAS_SETREUID */
a687059c
LW
3148#endif /* IAMSUID */
3149
b28d0864 3150 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3151 Perl_croak(aTHX_ "Permission denied");
b28d0864 3152 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3153 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3154 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3155 CopLINE_inc(PL_curcop);
6b88bc9c 3156 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3157 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3158 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3159 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3160 if (*s == ' ') s++;
45d8adaa 3161 while (!isSPACE(*s)) s++;
2d8e6c8d 3162 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
3163 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3164 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3165 Perl_croak(aTHX_ "Not a perl script");
a687059c 3166 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
3167 /*
3168 * #! arg must be what we saw above. They can invoke it by
3169 * mentioning suidperl explicitly, but they may not add any strange
3170 * arguments beyond what #! says if they do invoke suidperl that way.
3171 */
3172 len = strlen(validarg);
3173 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3174 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3175 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
3176
3177#ifndef IAMSUID
b28d0864
NIS
3178 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3179 PL_euid == PL_statbuf.st_uid)
3180 if (!PL_do_undump)
cea2e8a9 3181 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3182FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3183#endif /* IAMSUID */
13281fa4 3184
b28d0864
NIS
3185 if (PL_euid) { /* oops, we're not the setuid root perl */
3186 (void)PerlIO_close(PL_rsfp);
13281fa4 3187#ifndef IAMSUID
46fc3d4c 3188 /* try again */
a7cb1f99 3189 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3190 (int)PERL_REVISION, (int)PERL_VERSION,
3191 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3192#endif
cea2e8a9 3193 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
3194 }
3195
b28d0864 3196 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3197#ifdef HAS_SETEGID
b28d0864 3198 (void)setegid(PL_statbuf.st_gid);
a687059c 3199#else
fe14fcc3 3200#ifdef HAS_SETREGID
b28d0864 3201 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3202#else
3203#ifdef HAS_SETRESGID
b28d0864 3204 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3205#else
b28d0864 3206 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3207#endif
3208#endif
85e6fe83 3209#endif
b28d0864 3210 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3211 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3212 }
b28d0864
NIS
3213 if (PL_statbuf.st_mode & S_ISUID) {
3214 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3215#ifdef HAS_SETEUID
b28d0864 3216 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3217#else
fe14fcc3 3218#ifdef HAS_SETREUID
b28d0864 3219 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3220#else
3221#ifdef HAS_SETRESUID
b28d0864 3222 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3223#else
b28d0864 3224 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3225#endif
3226#endif
85e6fe83 3227#endif
b28d0864 3228 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3229 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3230 }
b28d0864 3231 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3232#ifdef HAS_SETEUID
b28d0864 3233 (void)seteuid((Uid_t)PL_uid);
a687059c 3234#else
fe14fcc3 3235#ifdef HAS_SETREUID
b28d0864 3236 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3237#else
85e6fe83 3238#ifdef HAS_SETRESUID
b28d0864 3239 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3240#else
b28d0864 3241 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3242#endif
a687059c
LW
3243#endif
3244#endif
b28d0864 3245 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3246 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3247 }
748a9306 3248 init_ids();
b28d0864 3249 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3250 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3251 }
3252#ifdef IAMSUID
6b88bc9c 3253 else if (PL_preprocess)
cea2e8a9 3254 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3255 else if (fdscript >= 0)
cea2e8a9 3256 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3257 else
cea2e8a9 3258 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3259
3260 /* We absolutely must clear out any saved ids here, so we */
3261 /* exec the real perl, substituting fd script for scriptname. */
3262 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3263 PerlIO_rewind(PL_rsfp);
3264 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3265 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3266 if (!PL_origargv[which])
cea2e8a9
GS
3267 Perl_croak(aTHX_ "Permission denied");
3268 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3269 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3270#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3271 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3272#endif
a7cb1f99 3273 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3274 (int)PERL_REVISION, (int)PERL_VERSION,
3275 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3276 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3277#endif /* IAMSUID */
a687059c 3278#else /* !DOSUID */
3280af22 3279 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3280#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3281 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3282 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3283 ||
b28d0864 3284 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3285 )
b28d0864 3286 if (!PL_do_undump)
cea2e8a9 3287 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3288FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3289#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3290 /* not set-id, must be wrapped */
a687059c 3291 }
13281fa4 3292#endif /* DOSUID */
79072805 3293}
13281fa4 3294
76e3520e 3295STATIC void
cea2e8a9 3296S_find_beginning(pTHX)
79072805 3297{
6e72f9df 3298 register char *s, *s2;
e55ac0fa
HS
3299#ifdef MACOS_TRADITIONAL
3300 int maclines = 0;
3301#endif
33b78306
LW
3302
3303 /* skip forward in input to the real script? */
3304
bbce6d69 3305 forbid_setid("-x");
bf4acbe4 3306#ifdef MACOS_TRADITIONAL
084592ab 3307 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3308
bf4acbe4
GS
3309 while (PL_doextract || gMacPerl_AlwaysExtract) {
3310 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3311 if (!gMacPerl_AlwaysExtract)
3312 Perl_croak(aTHX_ "No Perl script found in input\n");
e55ac0fa 3313
bf4acbe4
GS
3314 if (PL_doextract) /* require explicit override ? */
3315 if (!OverrideExtract(PL_origfilename))
3316 Perl_croak(aTHX_ "User aborted script\n");
3317 else
3318 PL_doextract = FALSE;
e55ac0fa 3319
bf4acbe4
GS
3320 /* Pater peccavi, file does not have #! */
3321 PerlIO_rewind(PL_rsfp);
e55ac0fa 3322
bf4acbe4
GS
3323 break;
3324 }
3325#else
3280af22
NIS
3326 while (PL_doextract) {
3327 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3328 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3329#endif
4f0c37ba
IZ
3330 s2 = s;
3331 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS
3332 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3333 PL_doextract = FALSE;
6e72f9df
PP
3334 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3335 s2 = s;
3336 while (*s == ' ' || *s == '\t') s++;
3337 if (*s++ == '-') {
3338 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3339 if (strnEQ(s2-4,"perl",4))
3340 /*SUPPRESS 530*/
155aba94
GS
3341 while ((s = moreswitches(s)))
3342 ;
33b78306 3343 }
95e8664e 3344#ifdef MACOS_TRADITIONAL
e55ac0fa
HS
3345 /* We are always searching for the #!perl line in MacPerl,
3346 * so if we find it, still keep the line count correct
3347 * by counting lines we already skipped over
3348 */
3349 for (; maclines > 0 ; maclines--)
3350 PerlIO_ungetc(PL_rsfp, '\n');
3351
95e8664e 3352 break;
e55ac0fa
HS
3353
3354 /* gMacPerl_AlwaysExtract is false in MPW tool */
3355 } else if (gMacPerl_AlwaysExtract) {
3356 ++maclines;
95e8664e 3357#endif
83025b21
LW
3358 }
3359 }
3360}
3361
afe37c7d 3362
76e3520e 3363STATIC void
cea2e8a9 3364S_init_ids(pTHX)
352d5a3a 3365{
d8eceb89
JH
3366 PL_uid = PerlProc_getuid();
3367 PL_euid = PerlProc_geteuid();
3368 PL_gid = PerlProc_getgid();
3369 PL_egid = PerlProc_getegid();
748a9306 3370#ifdef VMS
b28d0864
NIS
3371 PL_uid |= PL_gid << 16;
3372 PL_euid |= PL_egid << 16;
748a9306 3373#endif
3280af22 3374 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3375}
79072805 3376
76e3520e 3377STATIC void
cea2e8a9 3378S_forbid_setid(pTHX_ char *s)
bbce6d69 3379{
3280af22 3380 if (PL_euid != PL_uid)
cea2e8a9 3381 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3382 if (PL_egid != PL_gid)
cea2e8a9 3383 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3384}
3385
1ee4443e
IZ
3386void
3387Perl_init_debugger(pTHX)
748a9306 3388{
1ee4443e
IZ
3389 HV *ostash = PL_curstash;
3390
3280af22
NIS
3391 PL_curstash = PL_debstash;
3392 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3393 AvREAL_off(PL_dbargs);
3394 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3395 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3396 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3397 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3398 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3399 sv_setiv(PL_DBsingle, 0);
3280af22 3400 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3401 sv_setiv(PL_DBtrace, 0);
3280af22 3402 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3403 sv_setiv(PL_DBsignal, 0);
1ee4443e 3404 PL_curstash = ostash;
352d5a3a
LW
3405}
3406
2ce36478
SM
3407#ifndef STRESS_REALLOC
3408#define REASONABLE(size) (size)
3409#else
3410#define REASONABLE(size) (1) /* unreasonable */
3411#endif
3412
11343788 3413void
cea2e8a9 3414Perl_init_stacks(pTHX)
79072805 3415{
e336de0d 3416 /* start with 128-item stack and 8K cxstack */
3280af22 3417 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3418 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3419 PL_curstackinfo->si_type = PERLSI_MAIN;
3420 PL_curstack = PL_curstackinfo->si_stack;
3421 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3422
3280af22
NIS
3423 PL_stack_base = AvARRAY(PL_curstack);
3424 PL_stack_sp = PL_stack_base;
3425 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3426
3280af22
NIS
3427 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3428 PL_tmps_floor = -1;
3429 PL_tmps_ix = -1;
3430 PL_tmps_max = REASONABLE(128);
8990e307 3431
3280af22
NIS
3432 New(54,PL_markstack,REASONABLE(32),I32);
3433 PL_markstack_ptr = PL_markstack;
3434 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3435
ce2f7c3b 3436 SET_MARK_OFFSET;
e336de0d 3437
3280af22
NIS
3438 New(54,PL_scopestack,REASONABLE(32),I32);
3439 PL_scopestack_ix = 0;
3440 PL_scopestack_max = REASONABLE(32);
79072805 3441
3280af22
NIS
3442 New(54,PL_savestack,REASONABLE(128),ANY);
3443 PL_savestack_ix = 0;
3444 PL_savestack_max = REASONABLE(128);
79072805 3445
3280af22
NIS
3446 New(54,PL_retstack,REASONABLE(16),OP*);
3447 PL_retstack_ix = 0;
3448 PL_retstack_max = REASONABLE(16);
378cc40b 3449}
33b78306 3450
2ce36478
SM
3451#undef REASONABLE
3452
76e3520e 3453STATIC void
cea2e8a9 3454S_nuke_stacks(pTHX)
6e72f9df 3455{
3280af22
NIS
3456 while (PL_curstackinfo->si_next)
3457 PL_curstackinfo = PL_curstackinfo->si_next;
3458 while (PL_curstackinfo) {
3459 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3460 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3461 Safefree(PL_curstackinfo->si_cxstack);
3462 Safefree(PL_curstackinfo);
3463 PL_curstackinfo = p;
e336de0d 3464 }
3280af22
NIS
3465 Safefree(PL_tmps_stack);
3466 Safefree(PL_markstack);
3467 Safefree(PL_scopestack);
3468 Safefree(PL_savestack);
3469 Safefree(PL_retstack);
378cc40b 3470}
33b78306 3471
76e3520e 3472STATIC void
cea2e8a9 3473S_init_lexer(pTHX)
8990e307 3474{
06039172 3475 PerlIO *tmpfp;
3280af22
NIS
3476 tmpfp = PL