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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3246d7a3 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a687059c 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
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15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
JH
85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
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95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
e6827a76
NC
144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
NC
147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
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153#ifdef PERL_IMPLICIT_CONTEXT
154 MUTEX_INIT(&PL_my_ctx_mutex);
155# endif
e6827a76
NC
156 }
157 else {
158 PERL_SET_THX(my_perl);
159 }
160}
06d86050 161
32e30700
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162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
7766f137
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164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
9f653bb5 171 /* Newx() needs interpreter, so call malloc() instead */
32e30700 172 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 173 S_init_tls_and_interp(my_perl);
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174 Zero(my_perl, 1, PerlInterpreter);
175 PL_Mem = ipM;
7766f137
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176 PL_MemShared = ipMS;
177 PL_MemParse = ipMP;
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GS
178 PL_Env = ipE;
179 PL_StdIO = ipStd;
180 PL_LIO = ipLIO;
181 PL_Dir = ipD;
182 PL_Sock = ipS;
183 PL_Proc = ipP;
7766f137 184
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185 return my_perl;
186}
187#else
954c1994
GS
188
189/*
ccfc67b7
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190=head1 Embedding Functions
191
954c1994
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192=for apidoc perl_alloc
193
194Allocates a new Perl interpreter. See L<perlembed>.
195
196=cut
197*/
198
93a17b20 199PerlInterpreter *
cea2e8a9 200perl_alloc(void)
79072805 201{
cea2e8a9 202 PerlInterpreter *my_perl;
79072805 203
9f653bb5 204 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 205 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 206
e6827a76 207 S_init_tls_and_interp(my_perl);
07409e01 208 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
79072805 209}
32e30700 210#endif /* PERL_IMPLICIT_SYS */
79072805 211
954c1994
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212/*
213=for apidoc perl_construct
214
215Initializes a new Perl interpreter. See L<perlembed>.
216
217=cut
218*/
219
79072805 220void
0cb96387 221perl_construct(pTHXx)
79072805 222{
27da23d5 223 dVAR;
9d4ba2ae 224 PERL_UNUSED_ARG(my_perl);
8990e307 225#ifdef MULTIPLICITY
54aff467 226 init_interp();
ac27b0f5 227 PL_perl_destruct_level = 1;
54aff467
GS
228#else
229 if (PL_perl_destruct_level > 0)
230 init_interp();
231#endif
33f46ff6 232 /* Init the real globals (and main thread)? */
3280af22 233 if (!PL_linestr) {
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234 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
235
561b68a9 236 PL_linestr = newSV(79);
3280af22 237 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 238
3280af22 239 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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240 /* set read-only and try to insure than we wont see REFCNT==0
241 very often */
242
3280af22
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243 SvREADONLY_on(&PL_sv_undef);
244 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 245
3280af22 246 sv_setpv(&PL_sv_no,PL_No);
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247 /* value lookup in void context - happens to have the side effect
248 of caching the numeric forms. */
249 SvIV(&PL_sv_no);
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250 SvNV(&PL_sv_no);
251 SvREADONLY_on(&PL_sv_no);
252 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 253
3280af22 254 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 255 SvIV(&PL_sv_yes);
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NIS
256 SvNV(&PL_sv_yes);
257 SvREADONLY_on(&PL_sv_yes);
258 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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259
260 SvREADONLY_on(&PL_sv_placeholder);
261 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 262 }
79072805 263
8aad04aa 264 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 265#ifdef PERL_USES_PL_PIDSTATUS
3280af22 266 PL_pidstatus = newHV();
ca0c25f6 267#endif
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268 }
269
396482e1 270 PL_rs = newSVpvs("\n");
dc92893f 271
cea2e8a9 272 init_stacks();
79072805 273
748a9306 274 init_ids();
3280af22 275 PL_lex_state = LEX_NOTPARSING;
a5f75d66 276
312caa8e 277 JMPENV_BOOTSTRAP;
f86702cc
PP
278 STATUS_ALL_SUCCESS;
279
0672f40e 280 init_i18nl10n(1);
36477c24 281 SET_NUMERIC_STANDARD();
0b5b802d 282
ab821d7f 283#if defined(LOCAL_PATCH_COUNT)
3280af22 284 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
285#endif
286
52853b95
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287#ifdef HAVE_INTERP_INTERN
288 sys_intern_init();
289#endif
290
3a1ee7e8 291 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 292
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293 PL_fdpid = newAV(); /* for remembering popen pids by fd */
294 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 295 PL_errors = newSVpvs("");
48c6b404 296 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
297 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
298 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 299#ifdef USE_ITHREADS
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300 PL_regex_padav = newAV();
301 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
302 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 303#endif
e5dd39fc 304#ifdef USE_REENTRANT_API
59bd0823 305 Perl_reentrant_init(aTHX);
e5dd39fc 306#endif
3d47000e
AB
307
308 /* Note that strtab is a rather special HV. Assumptions are made
309 about not iterating on it, and not adding tie magic to it.
310 It is properly deallocated in perl_destruct() */
311 PL_strtab = newHV();
312
3d47000e
AB
313 HvSHAREKEYS_off(PL_strtab); /* mandatory */
314 hv_ksplit(PL_strtab, 512);
315
0631ea03
AB
316#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
317 _dyld_lookup_and_bind
318 ("__environ", (unsigned long *) &environ_pointer, NULL);
319#endif /* environ */
320
2f42fcb0
JH
321#ifndef PERL_MICRO
322# ifdef USE_ENVIRON_ARRAY
0631ea03 323 PL_origenviron = environ;
2f42fcb0 324# endif
0631ea03
AB
325#endif
326
5311654c 327 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 328 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
329 * BeOS has those, but returns the wrong value.
330 * The HZ if not originally defined has been by now
331 * been defined as CLK_TCK, if available. */
dbc1d986 332#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
333 PL_clocktick = sysconf(_SC_CLK_TCK);
334 if (PL_clocktick <= 0)
335#endif
336 PL_clocktick = HZ;
337
081fc587
AB
338 PL_stashcache = newHV();
339
e6830b13
NC
340 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
341 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 342
27da23d5
JH
343#ifdef HAS_MMAP
344 if (!PL_mmap_page_size) {
345#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
346 {
347 SETERRNO(0, SS_NORMAL);
348# ifdef _SC_PAGESIZE
349 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
350# else
351 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
352# endif
353 if ((long) PL_mmap_page_size < 0) {
354 if (errno) {
44f8325f 355 SV * const error = ERRSV;
27da23d5 356 (void) SvUPGRADE(error, SVt_PV);
0510663f 357 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
358 }
359 else
360 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
361 }
362 }
363#else
364# ifdef HAS_GETPAGESIZE
365 PL_mmap_page_size = getpagesize();
366# else
367# if defined(I_SYS_PARAM) && defined(PAGESIZE)
368 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
369# endif
370# endif
371#endif
372 if (PL_mmap_page_size <= 0)
373 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
374 (IV) PL_mmap_page_size);
375 }
376#endif /* HAS_MMAP */
377
378#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
379 PL_timesbase.tms_utime = 0;
380 PL_timesbase.tms_stime = 0;
381 PL_timesbase.tms_cutime = 0;
382 PL_timesbase.tms_cstime = 0;
383#endif
384
8990e307 385 ENTER;
79072805
LW
386}
387
954c1994 388/*
62375a60
NIS
389=for apidoc nothreadhook
390
391Stub that provides thread hook for perl_destruct when there are
392no threads.
393
394=cut
395*/
396
397int
4e9e3734 398Perl_nothreadhook(pTHX)
62375a60
NIS
399{
400 return 0;
401}
402
41e4abd8
NC
403#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
404void
405Perl_dump_sv_child(pTHX_ SV *sv)
406{
407 ssize_t got;
bf357333
NC
408 const int sock = PL_dumper_fd;
409 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
410 union control_un control;
411 struct msghdr msg;
808ad2d0 412 struct iovec vec[2];
bf357333 413 struct cmsghdr *cmptr;
808ad2d0
NC
414 int returned_errno;
415 unsigned char buffer[256];
41e4abd8 416
bf357333 417 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
418 return;
419
420 PerlIO_flush(Perl_debug_log);
421
bf357333
NC
422 /* All these shenanigans are to pass a file descriptor over to our child for
423 it to dump out to. We can't let it hold open the file descriptor when it
424 forks, as the file descriptor it will dump to can turn out to be one end
425 of pipe that some other process will wait on for EOF. (So as it would
426 be open, the wait would be forever. */
427
428 msg.msg_control = control.control;
429 msg.msg_controllen = sizeof(control.control);
430 /* We're a connected socket so we don't need a destination */
431 msg.msg_name = NULL;
432 msg.msg_namelen = 0;
433 msg.msg_iov = vec;
808ad2d0 434 msg.msg_iovlen = 1;
bf357333
NC
435
436 cmptr = CMSG_FIRSTHDR(&msg);
437 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
438 cmptr->cmsg_level = SOL_SOCKET;
439 cmptr->cmsg_type = SCM_RIGHTS;
440 *((int *)CMSG_DATA(cmptr)) = 1;
441
442 vec[0].iov_base = (void*)&sv;
443 vec[0].iov_len = sizeof(sv);
444 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
445
446 if(got < 0) {
bf357333 447 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
448 abort();
449 }
bf357333
NC
450 if(got < sizeof(sv)) {
451 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
452 abort();
453 }
454
808ad2d0
NC
455 /* Return protocol is
456 int: errno value
457 unsigned char: length of location string (0 for empty)
458 unsigned char*: string (not terminated)
459 */
460 vec[0].iov_base = (void*)&returned_errno;
461 vec[0].iov_len = sizeof(returned_errno);
462 vec[1].iov_base = buffer;
463 vec[1].iov_len = 1;
464
465 got = readv(sock, vec, 2);
41e4abd8
NC
466
467 if(got < 0) {
468 perror("Debug leaking scalars parent read failed");
808ad2d0 469 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
470 abort();
471 }
808ad2d0 472 if(got < sizeof(returned_errno) + 1) {
41e4abd8 473 perror("Debug leaking scalars parent short read");
808ad2d0 474 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
475 abort();
476 }
477
808ad2d0
NC
478 if (*buffer) {
479 got = read(sock, buffer + 1, *buffer);
480 if(got < 0) {
481 perror("Debug leaking scalars parent read 2 failed");
482 PerlIO_flush(PerlIO_stderr());
483 abort();
484 }
485
486 if(got < *buffer) {
487 perror("Debug leaking scalars parent short read 2");
488 PerlIO_flush(PerlIO_stderr());
489 abort();
490 }
491 }
492
493 if (returned_errno || *buffer) {
494 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
495 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
496 returned_errno, strerror(returned_errno));
41e4abd8
NC
497 }
498}
499#endif
500
62375a60 501/*
954c1994
GS
502=for apidoc perl_destruct
503
504Shuts down a Perl interpreter. See L<perlembed>.
505
506=cut
507*/
508
31d77e54 509int
0cb96387 510perl_destruct(pTHXx)
79072805 511{
27da23d5 512 dVAR;
7c474504 513 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 514 HV *hv;
2aa47728 515#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
516 pid_t child;
517#endif
8990e307 518
9d4ba2ae
AL
519 PERL_UNUSED_ARG(my_perl);
520
7766f137
GS
521 /* wait for all pseudo-forked children to finish */
522 PERL_WAIT_FOR_CHILDREN;
523
3280af22 524 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
525#ifdef DEBUGGING
526 {
9d4ba2ae
AL
527 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
528 if (s) {
e1ec3a88 529 const int i = atoi(s);
5f05dabc
PP
530 if (destruct_level < i)
531 destruct_level = i;
532 }
4633a7c4
LW
533 }
534#endif
535
27da23d5 536 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
537 dJMPENV;
538 int x = 0;
539
540 JMPENV_PUSH(x);
1b6737cc 541 PERL_UNUSED_VAR(x);
f3faeb53
AB
542 if (PL_endav && !PL_minus_c)
543 call_list(PL_scopestack_ix, PL_endav);
544 JMPENV_POP;
26f423df 545 }
f3faeb53 546 LEAVE;
a0d0e21e
LW
547 FREETMPS;
548
e00b64d4 549 /* Need to flush since END blocks can produce output */
f13a2bc0 550 my_fflush_all();
e00b64d4 551
62375a60
NIS
552 if (CALL_FPTR(PL_threadhook)(aTHX)) {
553 /* Threads hook has vetoed further cleanup */
37038d91 554 return STATUS_EXIT;
62375a60
NIS
555 }
556
2aa47728
NC
557#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
558 if (destruct_level != 0) {
559 /* Fork here to create a child. Our child's job is to preserve the
560 state of scalars prior to destruction, so that we can instruct it
561 to dump any scalars that we later find have leaked.
562 There's no subtlety in this code - it assumes POSIX, and it doesn't
563 fail gracefully */
564 int fd[2];
565
566 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
567 perror("Debug leaking scalars socketpair failed");
568 abort();
569 }
570
571 child = fork();
572 if(child == -1) {
573 perror("Debug leaking scalars fork failed");
574 abort();
575 }
576 if (!child) {
577 /* We are the child */
3125a5a4
NC
578 const int sock = fd[1];
579 const int debug_fd = PerlIO_fileno(Perl_debug_log);
580 int f;
808ad2d0
NC
581 const char *where;
582 /* Our success message is an integer 0, and a char 0 */
583 static const char success[sizeof(int) + 1];
3125a5a4 584
2aa47728 585 close(fd[0]);
2aa47728 586
3125a5a4
NC
587 /* We need to close all other file descriptors otherwise we end up
588 with interesting hangs, where the parent closes its end of a
589 pipe, and sits waiting for (another) child to terminate. Only
590 that child never terminates, because it never gets EOF, because
bf357333
NC
591 we also have the far end of the pipe open. We even need to
592 close the debugging fd, because sometimes it happens to be one
593 end of a pipe, and a process is waiting on the other end for
594 EOF. Normally it would be closed at some point earlier in
595 destruction, but if we happen to cause the pipe to remain open,
596 EOF never occurs, and we get an infinite hang. Hence all the
597 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
598
599 f = sysconf(_SC_OPEN_MAX);
600 if(f < 0) {
808ad2d0
NC
601 where = "sysconf failed";
602 goto abort;
3125a5a4
NC
603 }
604 while (f--) {
605 if (f == sock)
606 continue;
3125a5a4
NC
607 close(f);
608 }
609
2aa47728
NC
610 while (1) {
611 SV *target;
bf357333
NC
612 union control_un control;
613 struct msghdr msg;
614 struct iovec vec[1];
615 struct cmsghdr *cmptr;
616 ssize_t got;
617 int got_fd;
618
619 msg.msg_control = control.control;
620 msg.msg_controllen = sizeof(control.control);
621 /* We're a connected socket so we don't need a source */
622 msg.msg_name = NULL;
623 msg.msg_namelen = 0;
624 msg.msg_iov = vec;
625 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
626
627 vec[0].iov_base = (void*)&target;
628 vec[0].iov_len = sizeof(target);
629
630 got = recvmsg(sock, &msg, 0);
2aa47728
NC
631
632 if(got == 0)
633 break;
634 if(got < 0) {
808ad2d0
NC
635 where = "recv failed";
636 goto abort;
2aa47728
NC
637 }
638 if(got < sizeof(target)) {
808ad2d0
NC
639 where = "short recv";
640 goto abort;
2aa47728 641 }
bf357333 642
808ad2d0
NC
643 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
644 where = "no cmsg";
645 goto abort;
646 }
647 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
648 where = "wrong cmsg_len";
649 goto abort;
650 }
651 if(cmptr->cmsg_level != SOL_SOCKET) {
652 where = "wrong cmsg_level";
653 goto abort;
654 }
655 if(cmptr->cmsg_type != SCM_RIGHTS) {
656 where = "wrong cmsg_type";
657 goto abort;
658 }
bf357333
NC
659
660 got_fd = *(int*)CMSG_DATA(cmptr);
661 /* For our last little bit of trickery, put the file descriptor
662 back into Perl_debug_log, as if we never actually closed it
663 */
808ad2d0
NC
664 if(got_fd != debug_fd) {
665 if (dup2(got_fd, debug_fd) == -1) {
666 where = "dup2";
667 goto abort;
668 }
669 }
2aa47728 670 sv_dump(target);
bf357333 671
2aa47728
NC
672 PerlIO_flush(Perl_debug_log);
673
808ad2d0 674 got = write(sock, &success, sizeof(success));
2aa47728
NC
675
676 if(got < 0) {
808ad2d0
NC
677 where = "write failed";
678 goto abort;
2aa47728 679 }
808ad2d0
NC
680 if(got < sizeof(success)) {
681 where = "short write";
682 goto abort;
2aa47728
NC
683 }
684 }
685 _exit(0);
808ad2d0
NC
686 abort:
687 {
688 int send_errno = errno;
689 unsigned char length = (unsigned char) strlen(where);
690 struct iovec failure[3] = {
691 {(void*)&send_errno, sizeof(send_errno)},
692 {&length, 1},
693 {(void*)where, length}
694 };
695 int got = writev(sock, failure, 3);
696 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
697 in the parent if we try to read from the socketpair after the
698 child has exited, even if there was data to read.
699 So sleep a bit to give the parent a fighting chance of
700 reading the data. */
701 sleep(2);
702 _exit((got == -1) ? errno : 0);
703 }
bf357333 704 /* End of child. */
2aa47728 705 }
41e4abd8 706 PL_dumper_fd = fd[0];
2aa47728
NC
707 close(fd[1]);
708 }
709#endif
710
ff0cee69
PP
711 /* We must account for everything. */
712
713 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
714 /* Do this now, because destroying ops can cause new SVs to be generated
715 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
716 PL_curcop to point to a valid op from which the filename structure
717 member is copied. */
718 PL_curcop = &PL_compiling;
3280af22 719 if (PL_main_root) {
4e380990
DM
720 /* ensure comppad/curpad to refer to main's pad */
721 if (CvPADLIST(PL_main_cv)) {
722 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
723 }
3280af22
NIS
724 op_free(PL_main_root);
725 PL_main_root = Nullop;
a0d0e21e 726 }
3280af22
NIS
727 PL_main_start = Nullop;
728 SvREFCNT_dec(PL_main_cv);
601f1833 729 PL_main_cv = NULL;
24d3c518 730 PL_dirty = TRUE;
ff0cee69 731
13621cfb
NIS
732 /* Tell PerlIO we are about to tear things apart in case
733 we have layers which are using resources that should
734 be cleaned up now.
735 */
736
737 PerlIO_destruct(aTHX);
738
3280af22 739 if (PL_sv_objcount) {
a0d0e21e
LW
740 /*
741 * Try to destruct global references. We do this first so that the
742 * destructors and destructees still exist. Some sv's might remain.
743 * Non-referenced objects are on their own.
744 */
a0d0e21e 745 sv_clean_objs();
bf9cdc68 746 PL_sv_objcount = 0;
a0de6cf5
DM
747 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
748 PL_defoutgv = Nullgv; /* may have been freed */
8990e307
LW
749 }
750
5cd24f17 751 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
752 SvREFCNT_dec(PL_warnhook);
753 PL_warnhook = Nullsv;
754 SvREFCNT_dec(PL_diehook);
755 PL_diehook = Nullsv;
5cd24f17 756
4b556e6c 757 /* call exit list functions */
3280af22 758 while (PL_exitlistlen-- > 0)
acfe0abc 759 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 760
3280af22 761 Safefree(PL_exitlist);
4b556e6c 762
1c4916e5
CB
763 PL_exitlist = NULL;
764 PL_exitlistlen = 0;
765
a0d0e21e 766 if (destruct_level == 0){
8990e307 767
a0d0e21e 768 DEBUG_P(debprofdump());
ac27b0f5 769
56a2bab7
NIS
770#if defined(PERLIO_LAYERS)
771 /* No more IO - including error messages ! */
772 PerlIO_cleanup(aTHX);
773#endif
774
a0d0e21e 775 /* The exit() function will do everything that needs doing. */
37038d91 776 return STATUS_EXIT;
a0d0e21e 777 }
5dd60ef7 778
551a8b83 779 /* jettison our possibly duplicated environment */
4b647fb0
DM
780 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
781 * so we certainly shouldn't free it here
782 */
2f42fcb0 783#ifndef PERL_MICRO
4b647fb0 784#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 785 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
786#ifdef USE_ITHREADS
787 /* only main thread can free environ[0] contents */
788 && PL_curinterp == aTHX
789#endif
790 )
791 {
551a8b83
JH
792 I32 i;
793
794 for (i = 0; environ[i]; i++)
4b420006 795 safesysfree(environ[i]);
0631ea03 796
4b420006
JH
797 /* Must use safesysfree() when working with environ. */
798 safesysfree(environ);
551a8b83
JH
799
800 environ = PL_origenviron;
801 }
802#endif
2f42fcb0 803#endif /* !PERL_MICRO */
551a8b83 804
804ffa60
DM
805 /* reset so print() ends up where we expect */
806 setdefout(Nullgv);
807
5f8cb046
DM
808#ifdef USE_ITHREADS
809 /* the syntax tree is shared between clones
810 * so op_free(PL_main_root) only ReREFCNT_dec's
811 * REGEXPs in the parent interpreter
812 * we need to manually ReREFCNT_dec for the clones
813 */
814 {
815 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 816 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
817
818 while (i) {
c4420975 819 SV * const resv = ary[--i];
35061a7e
DM
820
821 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 822 /* this is PL_reg_curpm, already freed
35061a7e
DM
823 * flag is set in regexec.c:S_regtry
824 */
825 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 826 }
1cc8b4c5
AB
827 else if(SvREPADTMP(resv)) {
828 SvREPADTMP_off(resv);
829 }
a560f29b
NC
830 else if(SvIOKp(resv)) {
831 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
832 ReREFCNT_dec(re);
833 }
834 }
835 }
836 SvREFCNT_dec(PL_regex_padav);
7d49f689 837 PL_regex_padav = NULL;
5f8cb046
DM
838 PL_regex_pad = NULL;
839#endif
840
081fc587
AB
841 SvREFCNT_dec((SV*) PL_stashcache);
842 PL_stashcache = NULL;
843
5f05dabc
PP
844 /* loosen bonds of global variables */
845
3280af22
NIS
846 if(PL_rsfp) {
847 (void)PerlIO_close(PL_rsfp);
848 PL_rsfp = Nullfp;
8ebc5c01
PP
849 }
850
851 /* Filters for program text */
3280af22 852 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 853 PL_rsfp_filters = NULL;
8ebc5c01
PP
854
855 /* switches */
3280af22
NIS
856 PL_preprocess = FALSE;
857 PL_minus_n = FALSE;
858 PL_minus_p = FALSE;
859 PL_minus_l = FALSE;
860 PL_minus_a = FALSE;
861 PL_minus_F = FALSE;
862 PL_doswitches = FALSE;
599cee73 863 PL_dowarn = G_WARN_OFF;
3280af22
NIS
864 PL_doextract = FALSE;
865 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
866 PL_unsafe = FALSE;
867
868 Safefree(PL_inplace);
bd61b366 869 PL_inplace = NULL;
a7cb1f99 870 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
871
872 if (PL_e_script) {
873 SvREFCNT_dec(PL_e_script);
874 PL_e_script = Nullsv;
8ebc5c01
PP
875 }
876
bf9cdc68
RG
877 PL_perldb = 0;
878
8ebc5c01
PP
879 /* magical thingies */
880
7889fe52
NIS
881 SvREFCNT_dec(PL_ofs_sv); /* $, */
882 PL_ofs_sv = Nullsv;
5f05dabc 883
7889fe52
NIS
884 SvREFCNT_dec(PL_ors_sv); /* $\ */
885 PL_ors_sv = Nullsv;
8ebc5c01 886
3280af22
NIS
887 SvREFCNT_dec(PL_rs); /* $/ */
888 PL_rs = Nullsv;
dc92893f 889
d33b2eba
GS
890 PL_multiline = 0; /* $* */
891 Safefree(PL_osname); /* $^O */
bd61b366 892 PL_osname = NULL;
5f05dabc 893
3280af22
NIS
894 SvREFCNT_dec(PL_statname);
895 PL_statname = Nullsv;
896 PL_statgv = Nullgv;
5f05dabc 897
8ebc5c01
PP
898 /* defgv, aka *_ should be taken care of elsewhere */
899
8ebc5c01 900 /* clean up after study() */
3280af22
NIS
901 SvREFCNT_dec(PL_lastscream);
902 PL_lastscream = Nullsv;
903 Safefree(PL_screamfirst);
904 PL_screamfirst = 0;
905 Safefree(PL_screamnext);
906 PL_screamnext = 0;
8ebc5c01 907
7d5ea4e7
GS
908 /* float buffer */
909 Safefree(PL_efloatbuf);
bd61b366 910 PL_efloatbuf = NULL;
7d5ea4e7
GS
911 PL_efloatsize = 0;
912
8ebc5c01 913 /* startup and shutdown function lists */
3280af22 914 SvREFCNT_dec(PL_beginav);
5a837c8f 915 SvREFCNT_dec(PL_beginav_save);
3280af22 916 SvREFCNT_dec(PL_endav);
7d30b5c4 917 SvREFCNT_dec(PL_checkav);
ece599bd 918 SvREFCNT_dec(PL_checkav_save);
3280af22 919 SvREFCNT_dec(PL_initav);
7d49f689
NC
920 PL_beginav = NULL;
921 PL_beginav_save = NULL;
922 PL_endav = NULL;
923 PL_checkav = NULL;
924 PL_checkav_save = NULL;
925 PL_initav = NULL;
5618dfe8 926
8ebc5c01 927 /* shortcuts just get cleared */
3280af22 928 PL_envgv = Nullgv;
3280af22
NIS
929 PL_incgv = Nullgv;
930 PL_hintgv = Nullgv;
931 PL_errgv = Nullgv;
932 PL_argvgv = Nullgv;
933 PL_argvoutgv = Nullgv;
934 PL_stdingv = Nullgv;
bf49b057 935 PL_stderrgv = Nullgv;
3280af22
NIS
936 PL_last_in_gv = Nullgv;
937 PL_replgv = Nullgv;
bf9cdc68
RG
938 PL_DBgv = Nullgv;
939 PL_DBline = Nullgv;
940 PL_DBsub = Nullgv;
941 PL_DBsingle = Nullsv;
942 PL_DBtrace = Nullsv;
943 PL_DBsignal = Nullsv;
944 PL_DBassertion = Nullsv;
601f1833 945 PL_DBcv = NULL;
7d49f689 946 PL_dbargs = NULL;
5c284bb0 947 PL_debstash = NULL;
8ebc5c01 948
7a1c5554 949 SvREFCNT_dec(PL_argvout_stack);
7d49f689 950 PL_argvout_stack = NULL;
8ebc5c01 951
5c831c24 952 SvREFCNT_dec(PL_modglobal);
5c284bb0 953 PL_modglobal = NULL;
5c831c24 954 SvREFCNT_dec(PL_preambleav);
7d49f689 955 PL_preambleav = NULL;
5c831c24
GS
956 SvREFCNT_dec(PL_subname);
957 PL_subname = Nullsv;
958 SvREFCNT_dec(PL_linestr);
959 PL_linestr = Nullsv;
ca0c25f6 960#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 961 SvREFCNT_dec(PL_pidstatus);
5c284bb0 962 PL_pidstatus = NULL;
ca0c25f6 963#endif
5c831c24
GS
964 SvREFCNT_dec(PL_toptarget);
965 PL_toptarget = Nullsv;
966 SvREFCNT_dec(PL_bodytarget);
967 PL_bodytarget = Nullsv;
968 PL_formtarget = Nullsv;
969
d33b2eba 970 /* free locale stuff */
b9582b6a 971#ifdef USE_LOCALE_COLLATE
d33b2eba 972 Safefree(PL_collation_name);
bd61b366 973 PL_collation_name = NULL;
b9582b6a 974#endif
d33b2eba 975
b9582b6a 976#ifdef USE_LOCALE_NUMERIC
d33b2eba 977 Safefree(PL_numeric_name);
bd61b366 978 PL_numeric_name = NULL;
a453c169 979 SvREFCNT_dec(PL_numeric_radix_sv);
bf9cdc68 980 PL_numeric_radix_sv = Nullsv;
b9582b6a 981#endif
d33b2eba 982
5c831c24
GS
983 /* clear utf8 character classes */
984 SvREFCNT_dec(PL_utf8_alnum);
985 SvREFCNT_dec(PL_utf8_alnumc);
986 SvREFCNT_dec(PL_utf8_ascii);
987 SvREFCNT_dec(PL_utf8_alpha);
988 SvREFCNT_dec(PL_utf8_space);
989 SvREFCNT_dec(PL_utf8_cntrl);
990 SvREFCNT_dec(PL_utf8_graph);
991 SvREFCNT_dec(PL_utf8_digit);
992 SvREFCNT_dec(PL_utf8_upper);
993 SvREFCNT_dec(PL_utf8_lower);
994 SvREFCNT_dec(PL_utf8_print);
995 SvREFCNT_dec(PL_utf8_punct);
996 SvREFCNT_dec(PL_utf8_xdigit);
997 SvREFCNT_dec(PL_utf8_mark);
998 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 999 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1000 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1001 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1002 SvREFCNT_dec(PL_utf8_idstart);
1003 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS
1004 PL_utf8_alnum = Nullsv;
1005 PL_utf8_alnumc = Nullsv;
1006 PL_utf8_ascii = Nullsv;
1007 PL_utf8_alpha = Nullsv;
1008 PL_utf8_space = Nullsv;
1009 PL_utf8_cntrl = Nullsv;
1010 PL_utf8_graph = Nullsv;
1011 PL_utf8_digit = Nullsv;
1012 PL_utf8_upper = Nullsv;
1013 PL_utf8_lower = Nullsv;
1014 PL_utf8_print = Nullsv;
1015 PL_utf8_punct = Nullsv;
1016 PL_utf8_xdigit = Nullsv;
1017 PL_utf8_mark = Nullsv;
1018 PL_utf8_toupper = Nullsv;
1019 PL_utf8_totitle = Nullsv;
1020 PL_utf8_tolower = Nullsv;
b4e400f9 1021 PL_utf8_tofold = Nullsv;
82686b01
JH
1022 PL_utf8_idstart = Nullsv;
1023 PL_utf8_idcont = Nullsv;
5c831c24 1024
971a9dd3
GS
1025 if (!specialWARN(PL_compiling.cop_warnings))
1026 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 1027 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
1028 if (!specialCopIO(PL_compiling.cop_io))
1029 SvREFCNT_dec(PL_compiling.cop_io);
1030 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS
1031 CopFILE_free(&PL_compiling);
1032 CopSTASH_free(&PL_compiling);
5c831c24 1033
a0d0e21e 1034 /* Prepare to destruct main symbol table. */
5f05dabc 1035
3280af22
NIS
1036 hv = PL_defstash;
1037 PL_defstash = 0;
a0d0e21e 1038 SvREFCNT_dec(hv);
5c831c24
GS
1039 SvREFCNT_dec(PL_curstname);
1040 PL_curstname = Nullsv;
a0d0e21e 1041
5a844595
GS
1042 /* clear queued errors */
1043 SvREFCNT_dec(PL_errors);
1044 PL_errors = Nullsv;
1045
a0d0e21e 1046 FREETMPS;
0453d815 1047 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1048 if (PL_scopestack_ix != 0)
9014280d 1049 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1050 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1051 (long)PL_scopestack_ix);
1052 if (PL_savestack_ix != 0)
9014280d 1053 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1054 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1055 (long)PL_savestack_ix);
1056 if (PL_tmps_floor != -1)
9014280d 1057 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1058 (long)PL_tmps_floor + 1);
a0d0e21e 1059 if (cxstack_ix != -1)
9014280d 1060 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1061 (long)cxstack_ix + 1);
a0d0e21e 1062 }
8990e307
LW
1063
1064 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1065 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1066 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1067
1068 /* the 2 is for PL_fdpid and PL_strtab */
1069 while (PL_sv_count > 2 && sv_clean_all())
1070 ;
1071
d33b2eba
GS
1072 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1073 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1074 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1075 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1076
d4777f27
GS
1077 AvREAL_off(PL_fdpid); /* no surviving entries */
1078 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1079 PL_fdpid = NULL;
d33b2eba 1080
6c644e78
GS
1081#ifdef HAVE_INTERP_INTERN
1082 sys_intern_clear();
1083#endif
1084
6e72f9df
PP
1085 /* Destruct the global string table. */
1086 {
1087 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1088 * so that sv_free() won't fail on them.
80459961
NC
1089 * Now that the global string table is using a single hunk of memory
1090 * for both HE and HEK, we either need to explicitly unshare it the
1091 * correct way, or actually free things here.
6e72f9df 1092 */
80459961
NC
1093 I32 riter = 0;
1094 const I32 max = HvMAX(PL_strtab);
c4420975 1095 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1096 HE *hent = array[0];
1097
6e72f9df 1098 for (;;) {
0453d815 1099 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1100 HE * const next = HeNEXT(hent);
9014280d 1101 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1102 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1103 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1104 Safefree(hent);
1105 hent = next;
6e72f9df
PP
1106 }
1107 if (!hent) {
1108 if (++riter > max)
1109 break;
1110 hent = array[riter];
1111 }
1112 }
80459961
NC
1113
1114 Safefree(array);
1115 HvARRAY(PL_strtab) = 0;
1116 HvTOTALKEYS(PL_strtab) = 0;
1117 HvFILL(PL_strtab) = 0;
6e72f9df 1118 }
3280af22 1119 SvREFCNT_dec(PL_strtab);
6e72f9df 1120
e652bb2f 1121#ifdef USE_ITHREADS
c21d1a0f 1122 /* free the pointer tables used for cloning */
a0739874 1123 ptr_table_free(PL_ptr_table);
bf9cdc68 1124 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1125#endif
a0739874 1126
d33b2eba
GS
1127 /* free special SVs */
1128
1129 SvREFCNT(&PL_sv_yes) = 0;
1130 sv_clear(&PL_sv_yes);
1131 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1132 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1133
1134 SvREFCNT(&PL_sv_no) = 0;
1135 sv_clear(&PL_sv_no);
1136 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1137 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1138
9f375a43
DM
1139 {
1140 int i;
1141 for (i=0; i<=2; i++) {
1142 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1143 sv_clear(PERL_DEBUG_PAD(i));
1144 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1145 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1146 }
1147 }
1148
0453d815 1149 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1150 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1151
eba0f806
DM
1152#ifdef DEBUG_LEAKING_SCALARS
1153 if (PL_sv_count != 0) {
1154 SV* sva;
1155 SV* sv;
1156 register SV* svend;
1157
1158 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1159 svend = &sva[SvREFCNT(sva)];
1160 for (sv = sva + 1; sv < svend; ++sv) {
1161 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1162 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1163 " flags=0x%"UVxf
fd0854ff
DM
1164 " refcnt=%"UVuf pTHX__FORMAT "\n"
1165 "\tallocated at %s:%d %s %s%s\n",
1166 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_line,
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
1172 sv->sv_debug_cloned ? " (cloned)" : ""
1173 );
2aa47728 1174#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1175 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1176#endif
eba0f806
DM
1177 }
1178 }
1179 }
1180 }
2aa47728
NC
1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1182 {
1183 int status;
1184 fd_set rset;
1185 /* Wait for up to 4 seconds for child to terminate.
1186 This seems to be the least effort way of timing out on reaping
1187 its exit status. */
1188 struct timeval waitfor = {4, 0};
41e4abd8 1189 int sock = PL_dumper_fd;
2aa47728
NC
1190
1191 shutdown(sock, 1);
1192 FD_ZERO(&rset);
1193 FD_SET(sock, &rset);
1194 select(sock + 1, &rset, NULL, NULL, &waitfor);
1195 waitpid(child, &status, WNOHANG);
1196 close(sock);
1197 }
1198#endif
eba0f806 1199#endif
bf9cdc68 1200 PL_sv_count = 0;
eba0f806
DM
1201
1202
56a2bab7 1203#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1204 /* No more IO - including error messages ! */
1205 PerlIO_cleanup(aTHX);
1206#endif
1207
9f4bd222
NIS
1208 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1209 as currently layers use it rather than Nullsv as a marker
1210 for no arg - and will try and SvREFCNT_dec it.
1211 */
1212 SvREFCNT(&PL_sv_undef) = 0;
1213 SvREADONLY_off(&PL_sv_undef);
1214
3280af22 1215 Safefree(PL_origfilename);
bd61b366 1216 PL_origfilename = NULL;
3280af22 1217 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1218 PL_reg_start_tmp = (char**)NULL;
1219 PL_reg_start_tmpl = 0;
43c5f42d 1220 Safefree(PL_reg_curpm);
82ba1be6 1221 Safefree(PL_reg_poscache);
dd28f7bb 1222 free_tied_hv_pool();
3280af22 1223 Safefree(PL_op_mask);
cf36064f 1224 Safefree(PL_psig_ptr);
bf9cdc68 1225 PL_psig_ptr = (SV**)NULL;
cf36064f 1226 Safefree(PL_psig_name);
bf9cdc68 1227 PL_psig_name = (SV**)NULL;
2c2666fc 1228 Safefree(PL_bitcount);
bd61b366 1229 PL_bitcount = NULL;
ce08f86c 1230 Safefree(PL_psig_pend);
bf9cdc68
RG
1231 PL_psig_pend = (int*)NULL;
1232 PL_formfeed = Nullsv;
6e72f9df 1233 nuke_stacks();
bf9cdc68
RG
1234 PL_tainting = FALSE;
1235 PL_taint_warn = FALSE;
3280af22 1236 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1237 PL_debug = 0;
ac27b0f5 1238
a0d0e21e 1239 DEBUG_P(debprofdump());
d33b2eba 1240
e5dd39fc 1241#ifdef USE_REENTRANT_API
10bc17b6 1242 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1243#endif
1244
612f20c3
GS
1245 sv_free_arenas();
1246
fc36a67e
PP
1247 /* As the absolutely last thing, free the non-arena SV for mess() */
1248
3280af22 1249 if (PL_mess_sv) {
f350b448
NC
1250 /* we know that type == SVt_PVMG */
1251
9c63abab 1252 /* it could have accumulated taint magic */
f350b448
NC
1253 MAGIC* mg;
1254 MAGIC* moremagic;
1255 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1256 moremagic = mg->mg_moremagic;
1257 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1258 && mg->mg_len >= 0)
1259 Safefree(mg->mg_ptr);
1260 Safefree(mg);
9c63abab 1261 }
f350b448 1262
fc36a67e 1263 /* we know that type >= SVt_PV */
8bd4d4c5 1264 SvPV_free(PL_mess_sv);
3280af22
NIS
1265 Safefree(SvANY(PL_mess_sv));
1266 Safefree(PL_mess_sv);
1267 PL_mess_sv = Nullsv;
fc36a67e 1268 }
37038d91 1269 return STATUS_EXIT;
79072805
LW
1270}
1271
954c1994
GS
1272/*
1273=for apidoc perl_free
1274
1275Releases a Perl interpreter. See L<perlembed>.
1276
1277=cut
1278*/
1279
79072805 1280void
0cb96387 1281perl_free(pTHXx)
79072805 1282{
acfe0abc 1283#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1284# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
1285# ifdef NETWARE
1286 void *host = nw_internal_host;
1287# else
1288 void *host = w32_internal_host;
1289# endif
ce3e5b80 1290 PerlMem_free(aTHXx);
acfe0abc 1291# ifdef NETWARE
011f1a1a 1292 nw_delete_internal_host(host);
acfe0abc
GS
1293# else
1294 win32_delete_internal_host(host);
1295# endif
1c0ca838
GS
1296# else
1297 PerlMem_free(aTHXx);
1298# endif
acfe0abc
GS
1299#else
1300 PerlMem_free(aTHXx);
76e3520e 1301#endif
79072805
LW
1302}
1303
aebd1ac7
GA
1304#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1305/* provide destructors to clean up the thread key when libperl is unloaded */
1306#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1307
110d3f98 1308#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1309#pragma fini "perl_fini"
1310#endif
1311
0dbb1585
AL
1312static void
1313#if defined(__GNUC__)
1314__attribute__((destructor))
aebd1ac7 1315#endif
de009b76 1316perl_fini(void)
aebd1ac7 1317{
27da23d5 1318 dVAR;
aebd1ac7
GA
1319 if (PL_curinterp)
1320 FREE_THREAD_KEY;
1321}
1322
1323#endif /* WIN32 */
1324#endif /* THREADS */
1325
4b556e6c 1326void
864dbfa3 1327Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1328{
97aff369 1329 dVAR;
3280af22
NIS
1330 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1331 PL_exitlist[PL_exitlistlen].fn = fn;
1332 PL_exitlist[PL_exitlistlen].ptr = ptr;
1333 ++PL_exitlistlen;
4b556e6c
JD
1334}
1335
56cf6df8
RGS
1336#ifdef HAS_PROCSELFEXE
1337/* This is a function so that we don't hold on to MAXPATHLEN
1338 bytes of stack longer than necessary
1339 */
1340STATIC void
e1ec3a88 1341S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1342{
1343 char buf[MAXPATHLEN];
1344 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1345
1346 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1347 includes a spurious NUL which will cause $^X to fail in system
1348 or backticks (this will prevent extensions from being built and
1349 many tests from working). readlink is not meant to add a NUL.
1350 Normal readlink works fine.
1351 */
1352 if (len > 0 && buf[len-1] == '\0') {
1353 len--;
1354 }
1355
1356 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1357 returning the text "unknown" from the readlink rather than the path
1358 to the executable (or returning an error from the readlink). Any valid
1359 path has a '/' in it somewhere, so use that to validate the result.
1360 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1361 */
1362 if (len > 0 && memchr(buf, '/', len)) {
1363 sv_setpvn(sv,buf,len);
1364 }
1365 else {
1366 sv_setpv(sv,arg0);
1367 }
1368}
1369#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1370
1371STATIC void
1372S_set_caret_X(pTHX) {
97aff369 1373 dVAR;
fafc274c 1374 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1375 if (tmpgv) {
1376#ifdef HAS_PROCSELFEXE
1377 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1378#else
1379#ifdef OS2
c69033f2 1380 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1381#else
c69033f2 1382 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1383#endif
1384#endif
1385 }
1386}
1387
954c1994
GS
1388/*
1389=for apidoc perl_parse
1390
1391Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1392
1393=cut
1394*/
1395
79072805 1396int
0cb96387 1397perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1398{
27da23d5 1399 dVAR;
6224f72b 1400 I32 oldscope;
6224f72b 1401 int ret;
db36c5a1 1402 dJMPENV;
8d063cd8 1403
9d4ba2ae
AL
1404 PERL_UNUSED_VAR(my_perl);
1405
a687059c
LW
1406#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1407#ifdef IAMSUID
1408#undef IAMSUID
cea2e8a9 1409 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1410setuid perl scripts securely.\n");
ae3f3efd 1411#endif /* IAMSUID */
a687059c
LW
1412#endif
1413
b0891165
JH
1414#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1415 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1416 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1417 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1418 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1419 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1420 if (!PL_rehash_seed_set)
1421 PL_rehash_seed = get_hash_seed();
b0891165 1422 {
9d4ba2ae 1423 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1424
1b6737cc
AL
1425 if (s && (atoi(s) == 1))
1426 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1427 }
1428#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1429
3280af22 1430 PL_origargc = argc;
e2975953 1431 PL_origargv = argv;
a0d0e21e 1432
a2722ac9
GA
1433 if (PL_origalen != 0) {
1434 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1435 }
1436 else {
3cb9023d
JH
1437 /* Set PL_origalen be the sum of the contiguous argv[]
1438 * elements plus the size of the env in case that it is
e9137a8e 1439 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1440 * as the maximum modifiable length of $0. In the worst case
1441 * the area we are able to modify is limited to the size of
43c32782 1442 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1443 * --jhi */
e1ec3a88 1444 const char *s = NULL;
54bfe034 1445 int i;
1b6737cc 1446 const UV mask =
7d8e7db3 1447 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1448 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1449 const UV aligned =
43c32782
JH
1450 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1451
1452 /* See if all the arguments are contiguous in memory. Note
1453 * that 'contiguous' is a loose term because some platforms
1454 * align the argv[] and the envp[]. If the arguments look
1455 * like non-aligned, assume that they are 'strictly' or
1456 * 'traditionally' contiguous. If the arguments look like
1457 * aligned, we just check that they are within aligned
1458 * PTRSIZE bytes. As long as no system has something bizarre
1459 * like the argv[] interleaved with some other data, we are
1460 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1461 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1462 while (*s) s++;
1463 for (i = 1; i < PL_origargc; i++) {
1464 if ((PL_origargv[i] == s + 1
43c32782 1465#ifdef OS2
c8941eeb 1466 || PL_origargv[i] == s + 2
43c32782 1467#endif
c8941eeb
JH
1468 )
1469 ||
1470 (aligned &&
1471 (PL_origargv[i] > s &&
1472 PL_origargv[i] <=
1473 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1474 )
1475 {
1476 s = PL_origargv[i];
1477 while (*s) s++;
1478 }
1479 else
1480 break;
54bfe034 1481 }
54bfe034 1482 }
3cb9023d 1483 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1484 if (s && PL_origenviron) {
43c32782
JH
1485 if ((PL_origenviron[0] == s + 1
1486#ifdef OS2
1487 || (PL_origenviron[0] == s + 9 && (s += 8))
1488#endif
1489 )
1490 ||
1491 (aligned &&
1492 (PL_origenviron[0] > s &&
1493 PL_origenviron[0] <=
1494 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1495 )
1496 {
1497#ifndef OS2
1498 s = PL_origenviron[0];
1499 while (*s) s++;
1500#endif
bd61b366 1501 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1502 /* Force copy of environment. */
1503 for (i = 1; PL_origenviron[i]; i++) {
1504 if (PL_origenviron[i] == s + 1
1505 ||
1506 (aligned &&
1507 (PL_origenviron[i] > s &&
1508 PL_origenviron[i] <=
1509 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1510 )
1511 {
1512 s = PL_origenviron[i];
1513 while (*s) s++;
1514 }
1515 else
1516 break;
54bfe034 1517 }
43c32782 1518 }
54bfe034 1519 }
2d2af554 1520 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1521 }
1522
3280af22 1523 if (PL_do_undump) {
a0d0e21e
LW
1524
1525 /* Come here if running an undumped a.out. */
1526
3280af22
NIS
1527 PL_origfilename = savepv(argv[0]);
1528 PL_do_undump = FALSE;
a0d0e21e 1529 cxstack_ix = -1; /* start label stack again */
748a9306 1530 init_ids();
b7975bdd
NC
1531 assert (!PL_tainted);
1532 TAINT;
1533 S_set_caret_X(aTHX);
1534 TAINT_NOT;
a0d0e21e
LW
1535 init_postdump_symbols(argc,argv,env);
1536 return 0;
1537 }
1538
3280af22 1539 if (PL_main_root) {
3280af22
NIS
1540 op_free(PL_main_root);
1541 PL_main_root = Nullop;
ff0cee69 1542 }
3280af22
NIS
1543 PL_main_start = Nullop;
1544 SvREFCNT_dec(PL_main_cv);
601f1833 1545 PL_main_cv = NULL;
79072805 1546
3280af22
NIS
1547 time(&PL_basetime);
1548 oldscope = PL_scopestack_ix;
599cee73 1549 PL_dowarn = G_WARN_OFF;
f86702cc 1550
14dd3ad8 1551 JMPENV_PUSH(ret);
6224f72b 1552 switch (ret) {
312caa8e 1553 case 0:
14dd3ad8 1554 parse_body(env,xsinit);
7d30b5c4
GS
1555 if (PL_checkav)
1556 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1557 ret = 0;
1558 break;
6224f72b
GS
1559 case 1:
1560 STATUS_ALL_FAILURE;
1561 /* FALL THROUGH */
1562 case 2:
1563 /* my_exit() was called */
3280af22 1564 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1565 LEAVE;
1566 FREETMPS;
3280af22 1567 PL_curstash = PL_defstash;
7d30b5c4
GS
1568 if (PL_checkav)
1569 call_list(oldscope, PL_checkav);
37038d91 1570 ret = STATUS_EXIT;
14dd3ad8 1571 break;
6224f72b 1572 case 3:
bf49b057 1573 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1574 ret = 1;
1575 break;
6224f72b 1576 }
14dd3ad8
GS
1577 JMPENV_POP;
1578 return ret;
1579}
1580
312caa8e 1581STATIC void *
14dd3ad8 1582S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1583{
27da23d5 1584 dVAR;
312caa8e 1585 int argc = PL_origargc;
8f42b153 1586 char **argv = PL_origargv;
e1ec3a88 1587 const char *scriptname = NULL;
312caa8e 1588 VOL bool dosearch = FALSE;
e1ec3a88 1589 const char *validarg = "";
312caa8e
CS
1590 register SV *sv;
1591 register char *s;
bd61b366 1592 const char *cddir = NULL;
ab019eaa 1593#ifdef USE_SITECUSTOMIZE
20ef40cf 1594 bool minus_f = FALSE;
ab019eaa 1595#endif
312caa8e 1596
ae3f3efd
PS
1597 PL_fdscript = -1;
1598 PL_suidscript = -1;
3280af22 1599 sv_setpvn(PL_linestr,"",0);
396482e1 1600 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1601 SAVEFREESV(sv);
1602 init_main_stash();
54310121 1603
6224f72b
GS
1604 for (argc--,argv++; argc > 0; argc--,argv++) {
1605 if (argv[0][0] != '-' || !argv[0][1])
1606 break;
1607#ifdef DOSUID
1608 if (*validarg)
1609 validarg = " PHOOEY ";
1610 else
1611 validarg = argv[0];
ae3f3efd
PS
1612 /*
1613 * Can we rely on the kernel to start scripts with argv[1] set to
1614 * contain all #! line switches (the whole line)? (argv[0] is set to
1615 * the interpreter name, argv[2] to the script name; argv[3] and
1616 * above may contain other arguments.)
1617 */
13281fa4 1618#endif
6224f72b
GS
1619 s = argv[0]+1;
1620 reswitch:
1621 switch (*s) {
729a02f2 1622 case 'C':
1d5472a9
GS
1623#ifndef PERL_STRICT_CR
1624 case '\r':
1625#endif
6224f72b
GS
1626 case ' ':
1627 case '0':
1628 case 'F':
1629 case 'a':
1630 case 'c':
1631 case 'd':
1632 case 'D':
1633 case 'h':
1634 case 'i':
1635 case 'l':
1636 case 'M':
1637 case 'm':
1638 case 'n':
1639 case 'p':
1640 case 's':
1641 case 'u':
1642 case 'U':
1643 case 'v':
599cee73
PM
1644 case 'W':
1645 case 'X':
6224f72b 1646 case 'w':
06492da6 1647 case 'A':
155aba94 1648 if ((s = moreswitches(s)))
6224f72b
GS
1649 goto reswitch;
1650 break;
33b78306 1651
1dbad523 1652 case 't':
22f7c9c9 1653 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1654 if( !PL_tainting ) {
1655 PL_taint_warn = TRUE;
1656 PL_tainting = TRUE;
1657 }
1658 s++;
1659 goto reswitch;
6224f72b 1660 case 'T':
22f7c9c9 1661 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1662 PL_tainting = TRUE;
317ea90d 1663 PL_taint_warn = FALSE;
6224f72b
GS
1664 s++;
1665 goto reswitch;
f86702cc 1666
bc9b29db
RH
1667 case 'E':
1668 PL_minus_E = TRUE;
1669 /* FALL THROUGH */
6224f72b 1670 case 'e':
bf4acbe4
GS
1671#ifdef MACOS_TRADITIONAL
1672 /* ignore -e for Dev:Pseudo argument */
1673 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1674 break;
bf4acbe4 1675#endif
ae3f3efd 1676 forbid_setid("-e");
3280af22 1677 if (!PL_e_script) {
396482e1 1678 PL_e_script = newSVpvs("");
0cb96387 1679 filter_add(read_e_script, NULL);
6224f72b
GS
1680 }
1681 if (*++s)
3280af22 1682 sv_catpv(PL_e_script, s);
6224f72b 1683 else if (argv[1]) {
3280af22 1684 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1685 argc--,argv++;
1686 }
1687 else
bc9b29db 1688 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1689 sv_catpvs(PL_e_script, "\n");
6224f72b 1690 break;
afe37c7d 1691
20ef40cf 1692 case 'f':
f5542d3a 1693#ifdef USE_SITECUSTOMIZE
20ef40cf 1694 minus_f = TRUE;
f5542d3a 1695#endif
20ef40cf
GA
1696 s++;
1697 goto reswitch;
1698
6224f72b
GS
1699 case 'I': /* -I handled both here and in moreswitches() */
1700 forbid_setid("-I");
bd61b366 1701 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1702 argc--,argv++;
1703 }
6224f72b 1704 if (s && *s) {
0df16ed7 1705 STRLEN len = strlen(s);
aec46f14 1706 const char * const p = savepvn(s, len);
88fe16b2 1707 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1708 sv_catpvs(sv, "-I");
0df16ed7 1709 sv_catpvn(sv, p, len);
396482e1 1710 sv_catpvs(sv, " ");
6224f72b 1711 Safefree(p);
0df16ed7
GS
1712 }
1713 else
a67e862a 1714 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1715 break;
1716 case 'P':
1717 forbid_setid("-P");
3280af22 1718 PL_preprocess = TRUE;
6224f72b
GS
1719 s++;
1720 goto reswitch;
1721 case 'S':
1722 forbid_setid("-S");
1723 dosearch = TRUE;
1724 s++;
1725 goto reswitch;
1726 case 'V':
7edfd0ef
NC
1727 {
1728 SV *opts_prog;
1729
1730 if (!PL_preambleav)
1731 PL_preambleav = newAV();
1732 av_push(PL_preambleav,
396482e1 1733 newSVpvs("use Config;"));
7edfd0ef
NC
1734 if (*++s != ':') {
1735 STRLEN opts;
1736
396482e1 1737 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1738#ifdef VMS
396482e1 1739 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1740#else
396482e1 1741 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1742#endif
7edfd0ef 1743 opts = SvCUR(opts_prog);
efcaa95b 1744
9cd7d3f2 1745 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1746# ifdef DEBUGGING
e2e4dbf1 1747 " DEBUGGING"
6224f72b 1748# endif
4f185743
NC
1749# ifdef DEBUG_LEAKING_SCALARS
1750 " DEBUG_LEAKING_SCALARS"
1751# endif
85e1fcb9 1752# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1753 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1754# endif
1755# ifdef FAKE_THREADS
e2e4dbf1 1756 " FAKE_THREADS"
85e1fcb9 1757# endif
6224f72b 1758# ifdef MULTIPLICITY
e2e4dbf1 1759 " MULTIPLICITY"
6224f72b 1760# endif
85e1fcb9 1761# ifdef MYMALLOC
e2e4dbf1 1762 " MYMALLOC"
85e1fcb9 1763# endif
3bcf5ed8
SP
1764# ifdef NO_MATHOMS
1765 " NO_MATHOMS"
1766# endif
85e1fcb9 1767# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1768 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1769# endif
1770# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1771 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1772# endif
1773# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1774 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1775# endif
1776# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1777 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1778# endif
1779# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1780 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1781# endif
1782# ifdef PERL_NEED_APPCTX
e2e4dbf1 1783 " PERL_NEED_APPCTX"
85e1fcb9
SH
1784# endif
1785# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1786 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1787# endif
1788# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1789 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1790# endif
9c0a4d5d
DM
1791# ifdef PERL_TRACK_MEMPOOL
1792 " PERL_TRACK_MEMPOOL"
1793# endif
417cd4a8
SP
1794# ifdef PERL_USE_SAFE_PUTENV
1795 " PERL_USE_SAFE_PUTENV"
1796# endif
ca0c25f6
NC
1797#ifdef PERL_USES_PL_PIDSTATUS
1798 " PERL_USES_PL_PIDSTATUS"
1799#endif
85e1fcb9 1800# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1801 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1802# endif
1803# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1804 " THREADS_HAVE_PIDS"
85e1fcb9 1805# endif
4d1ff10f 1806# ifdef USE_5005THREADS
e2e4dbf1 1807 " USE_5005THREADS"
b363f7ed 1808# endif
85e1fcb9 1809# ifdef USE_64_BIT_ALL
e2e4dbf1 1810 " USE_64_BIT_ALL"
ac5e8965 1811# endif
10cc9d2a 1812# ifdef USE_64_BIT_INT
e2e4dbf1 1813 " USE_64_BIT_INT"
10cc9d2a 1814# endif
85e1fcb9 1815# ifdef USE_ITHREADS
e2e4dbf1 1816 " USE_ITHREADS"
85e1fcb9
SH
1817# endif
1818# ifdef USE_LARGE_FILES
e2e4dbf1 1819 " USE_LARGE_FILES"
ac5e8965
JH
1820# endif
1821# ifdef USE_LONG_DOUBLE
e2e4dbf1 1822 " USE_LONG_DOUBLE"
ac5e8965 1823# endif
85e1fcb9 1824# ifdef USE_PERLIO
e2e4dbf1 1825 " USE_PERLIO"
53430762 1826# endif
85e1fcb9 1827# ifdef USE_REENTRANT_API
e2e4dbf1 1828 " USE_REENTRANT_API"
85e1fcb9
SH
1829# endif
1830# ifdef USE_SFIO
e2e4dbf1 1831 " USE_SFIO"
ac5e8965 1832# endif
20ef40cf 1833# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1834 " USE_SITECUSTOMIZE"
20ef40cf 1835# endif
85e1fcb9 1836# ifdef USE_SOCKS
e2e4dbf1 1837 " USE_SOCKS"
b363f7ed 1838# endif
e2e4dbf1 1839 );
efcaa95b 1840
7edfd0ef
NC
1841 while (SvCUR(opts_prog) > opts+76) {
1842 /* find last space after "options: " and before col 76
1843 */
efcaa95b 1844
7edfd0ef 1845 const char *space;
c4420975 1846 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1847 const char c = pv[opts+76];
1848 pv[opts+76] = '\0';
1849 space = strrchr(pv+opts+26, ' ');
1850 pv[opts+76] = c;
1851 if (!space) break; /* "Can't happen" */
efcaa95b 1852
7edfd0ef 1853 /* break the line before that space */
efcaa95b 1854
7edfd0ef 1855 opts = space - pv;
89529cee 1856 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1857 STR_WITH_LEN("\\n "));
7edfd0ef 1858 }
efcaa95b 1859
396482e1 1860 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1861
6224f72b 1862#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1863 if (LOCAL_PATCH_COUNT > 0) {
1864 int i;
396482e1 1865 sv_catpvs(opts_prog,
7edfd0ef
NC
1866 "\" Locally applied patches:\\n\",");
1867 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1868 if (PL_localpatches[i])
1869 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1870 0, PL_localpatches[i], 0);
1871 }
6224f72b 1872 }
6224f72b 1873#endif
7edfd0ef
NC
1874 Perl_sv_catpvf(aTHX_ opts_prog,
1875 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1876#ifdef __DATE__
1877# ifdef __TIME__
7edfd0ef
NC
1878 Perl_sv_catpvf(aTHX_ opts_prog,
1879 ",\" Compiled at %s %s\\n\"",__DATE__,
1880 __TIME__);
6224f72b 1881# else
7edfd0ef
NC
1882 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1883 __DATE__);
6224f72b
GS
1884# endif
1885#endif
396482e1 1886 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1887 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1888 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1889#ifdef __CYGWIN__
396482e1 1890 sv_catpvs(opts_prog,
7edfd0ef 1891 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1892#endif
396482e1 1893 sv_catpvs(opts_prog,
7edfd0ef
NC
1894 "print \" \\%ENV:\\n @env\\n\" if @env;"
1895 "print \" \\@INC:\\n @INC\\n\";");
1896 }
1897 else {
1898 ++s;
1899 opts_prog = Perl_newSVpvf(aTHX_
1900 "Config::config_vars(qw%c%s%c)",
1901 0, s, 0);
1902 s += strlen(s);
1903 }
1904 av_push(PL_preambleav, opts_prog);
1905 /* don't look for script or read stdin */
1906 scriptname = BIT_BUCKET;
1907 goto reswitch;
6224f72b 1908 }
6224f72b 1909 case 'x':
3280af22 1910 PL_doextract = TRUE;
6224f72b
GS
1911 s++;
1912 if (*s)
f4c556ac 1913 cddir = s;
6224f72b
GS
1914 break;
1915 case 0:
1916 break;
1917 case '-':
1918 if (!*++s || isSPACE(*s)) {
1919 argc--,argv++;
1920 goto switch_end;
1921 }
1922 /* catch use of gnu style long options */
1923 if (strEQ(s, "version")) {
dd374669 1924 s = (char *)"v";
6224f72b
GS
1925 goto reswitch;
1926 }
1927 if (strEQ(s, "help")) {
dd374669 1928 s = (char *)"h";
6224f72b
GS
1929 goto reswitch;
1930 }
1931 s--;
1932 /* FALL THROUGH */
1933 default:
cea2e8a9 1934 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1935 }
1936 }
6224f72b 1937 switch_end:
54310121 1938
f675dbe5
CB
1939 if (
1940#ifndef SECURE_INTERNAL_GETENV
1941 !PL_tainting &&
1942#endif
cf756827 1943 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1944 {
e1ec3a88 1945 const char *popt = s;
74288ac8
GS
1946 while (isSPACE(*s))
1947 s++;
317ea90d 1948 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1949 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1950 PL_tainting = TRUE;
317ea90d
MS
1951 PL_taint_warn = FALSE;
1952 }
74288ac8 1953 else {
bd61b366 1954 char *popt_copy = NULL;
74288ac8 1955 while (s && *s) {
4ea8f8fb 1956 char *d;
74288ac8
GS
1957 while (isSPACE(*s))
1958 s++;
1959 if (*s == '-') {
1960 s++;
1961 if (isSPACE(*s))
1962 continue;
1963 }
4ea8f8fb 1964 d = s;
74288ac8
GS
1965 if (!*s)
1966 break;
e4af53b0 1967 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1968 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1969 while (++s && *s) {
1970 if (isSPACE(*s)) {
cf756827
GS
1971 if (!popt_copy) {
1972 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1973 s = popt_copy + (s - popt);
1974 d = popt_copy + (d - popt);
1975 }
4ea8f8fb
MS
1976 *s++ = '\0';
1977 break;
1978 }
1979 }
1c4db469 1980 if (*d == 't') {
317ea90d
MS
1981 if( !PL_tainting ) {
1982 PL_taint_warn = TRUE;
1983 PL_tainting = TRUE;
1984 }
1c4db469
RGS
1985 } else {
1986 moreswitches(d);
1987 }
6224f72b 1988 }
6224f72b
GS
1989 }
1990 }
a0d0e21e 1991
20ef40cf
GA
1992#ifdef USE_SITECUSTOMIZE
1993 if (!minus_f) {
1994 if (!PL_preambleav)
1995 PL_preambleav = newAV();
1996 av_unshift(PL_preambleav, 1);
1997 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1998 }
1999#endif
2000
317ea90d
MS
2001 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2002 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2003 }
2004
6224f72b
GS
2005 if (!scriptname)
2006 scriptname = argv[0];
3280af22 2007 if (PL_e_script) {
6224f72b
GS
2008 argc++,argv--;
2009 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2010 }
bd61b366 2011 else if (scriptname == NULL) {
6224f72b
GS
2012#ifdef MSDOS
2013 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2014 moreswitches("h");
2015#endif
2016 scriptname = "-";
2017 }
2018
b7975bdd
NC
2019 /* Set $^X early so that it can be used for relocatable paths in @INC */
2020 assert (!PL_tainted);
2021 TAINT;
2022 S_set_caret_X(aTHX);
2023 TAINT_NOT;
6224f72b
GS
2024 init_perllib();
2025
c5cccb17 2026 open_script(scriptname,dosearch,sv);
6224f72b 2027
c5cccb17 2028 validate_suid(validarg, scriptname);
6224f72b 2029
64ca3a65 2030#ifndef PERL_MICRO
0b5b802d
GS
2031#if defined(SIGCHLD) || defined(SIGCLD)
2032 {
2033#ifndef SIGCHLD
2034# define SIGCHLD SIGCLD
2035#endif
2036 Sighandler_t sigstate = rsignal_state(SIGCHLD);
8aad04aa 2037 if (sigstate == (Sighandler_t) SIG_IGN) {
0b5b802d 2038 if (ckWARN(WARN_SIGNAL))
9014280d 2039 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
2040 "Can't ignore signal CHLD, forcing to default");
2041 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2042 }
2043 }
2044#endif
64ca3a65 2045#endif
0b5b802d 2046
bf4acbe4
GS
2047#ifdef MACOS_TRADITIONAL
2048 if (PL_doextract || gMacPerl_AlwaysExtract) {
2049#else
f4c556ac 2050 if (PL_doextract) {
bf4acbe4 2051#endif
6224f72b 2052 find_beginning();
dd374669 2053 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
f4c556ac
GS
2054 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2055
2056 }
6224f72b 2057
561b68a9 2058 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2059 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2060 CvUNIQUE_on(PL_compcv);
2061
dd2155a4 2062 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2063#ifdef USE_5005THREADS
533c011a 2064 CvOWNER(PL_compcv) = 0;
a02a5408 2065 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2066 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2067#endif /* USE_5005THREADS */
6224f72b 2068
0c4f7ff0 2069 boot_core_PerlIO();
6224f72b 2070 boot_core_UNIVERSAL();
09bef843 2071 boot_core_xsutils();
6224f72b
GS
2072
2073 if (xsinit)
acfe0abc 2074 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2075#ifndef PERL_MICRO
d0d72822 2076#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2077 init_os_extras();
6224f72b 2078#endif
64ca3a65 2079#endif
6224f72b 2080
29209bc5 2081#ifdef USE_SOCKS
1b9c9cf5
DH
2082# ifdef HAS_SOCKS5_INIT
2083 socks5_init(argv[0]);
2084# else
29209bc5 2085 SOCKSinit(argv[0]);
1b9c9cf5 2086# endif
ac27b0f5 2087#endif
29209bc5 2088
6224f72b
GS
2089 init_predump_symbols();
2090 /* init_postdump_symbols not currently designed to be called */
2091 /* more than once (ENV isn't cleared first, for example) */
2092 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2093 if (!PL_do_undump)
6224f72b
GS
2094 init_postdump_symbols(argc,argv,env);
2095
27da23d5
JH
2096 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2097 * or explicitly in some platforms.
085a54d9 2098 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2099 * look like the user wants to use UTF-8. */
a0fd4948 2100#if defined(__SYMBIAN32__)
27da23d5
JH
2101 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2102#endif
06e66572
JH
2103 if (PL_unicode) {
2104 /* Requires init_predump_symbols(). */
a05d7ebb 2105 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2106 IO* io;
2107 PerlIO* fp;
2108 SV* sv;
2109
a05d7ebb 2110 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2111 * and the default open disciplines. */
a05d7ebb
JH
2112 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2113 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2114 (fp = IoIFP(io)))
2115 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2116 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2117 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2118 (fp = IoOFP(io)))
2119 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2120 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2121 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2122 (fp = IoOFP(io)))
2123 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2124 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2125 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2126 SVt_PV)))) {
a05d7ebb
JH
2127 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2128 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2129 if (in) {
2130 if (out)
2131 sv_setpvn(sv, ":utf8\0:utf8", 11);
2132 else
2133 sv_setpvn(sv, ":utf8\0", 6);
2134 }
2135 else if (out)
2136 sv_setpvn(sv, "\0:utf8", 6);
2137 SvSETMAGIC(sv);
2138 }
b310b053
JH
2139 }
2140 }
2141
4ffa73a3
JH
2142 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2143 if (strEQ(s, "unsafe"))
2144 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2145 else if (strEQ(s, "safe"))
2146 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2147 else
2148 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2149 }
2150
6224f72b
GS
2151 init_lexer();
2152
2153 /* now parse the script */
2154
93189314 2155 SETERRNO(0,SS_NORMAL);
3280af22 2156 PL_error_count = 0;
bf4acbe4
GS
2157#ifdef MACOS_TRADITIONAL
2158 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2159 if (PL_minus_c)
2160 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2161 else {
2162 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2163 MacPerl_MPWFileName(PL_origfilename));
2164 }
2165 }
2166#else
3280af22
NIS
2167 if (yyparse() || PL_error_count) {
2168 if (PL_minus_c)
cea2e8a9 2169 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2170 else {
cea2e8a9 2171 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2172 PL_origfilename);
6224f72b
GS
2173 }
2174 }
bf4acbe4 2175#endif
57843af0 2176 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2177 PL_curstash = PL_defstash;
2178 PL_preprocess = FALSE;
2179 if (PL_e_script) {
2180 SvREFCNT_dec(PL_e_script);
2181 PL_e_script = Nullsv;
6224f72b
GS
2182 }
2183
3280af22 2184 if (PL_do_undump)
6224f72b
GS
2185 my_unexec();
2186
57843af0
GS
2187 if (isWARN_ONCE) {
2188 SAVECOPFILE(PL_curcop);
2189 SAVECOPLINE(PL_curcop);
3280af22 2190 gv_check(PL_defstash);
57843af0 2191 }
6224f72b
GS
2192
2193 LEAVE;
2194 FREETMPS;
2195
2196#ifdef MYMALLOC
2197 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2198 dump_mstats("after compilation:");
2199#endif
2200
2201 ENTER;
3280af22 2202 PL_restartop = 0;
312caa8e 2203 return NULL;
6224f72b
GS
2204}
2205
954c1994
GS
2206/*
2207=for apidoc perl_run
2208
2209Tells a Perl interpreter to run. See L<perlembed>.
2210
2211=cut
2212*/
2213
6224f72b 2214int
0cb96387 2215perl_run(pTHXx)
6224f72b 2216{
97aff369 2217 dVAR;
6224f72b 2218 I32 oldscope;
14dd3ad8 2219 int ret = 0;
db36c5a1 2220 dJMPENV;
6224f72b 2221
9d4ba2ae
AL
2222 PERL_UNUSED_ARG(my_perl);
2223
3280af22 2224 oldscope = PL_scopestack_ix;
96e176bf
CL
2225#ifdef VMS
2226 VMSISH_HUSHED = 0;
2227#endif
6224f72b 2228
14dd3ad8 2229 JMPENV_PUSH(ret);
6224f72b
GS
2230 switch (ret) {
2231 case 1:
2232 cxstack_ix = -1; /* start context stack again */
312caa8e 2233 goto redo_body;
14dd3ad8 2234 case 0: /* normal completion */
14dd3ad8
GS
2235 redo_body:
2236 run_body(oldscope);
14dd3ad8
GS
2237 /* FALL THROUGH */
2238 case 2: /* my_exit() */
3280af22 2239 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2240 LEAVE;
2241 FREETMPS;
3280af22 2242 PL_curstash = PL_defstash;
3a1ee7e8 2243 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2244 PL_endav && !PL_minus_c)
2245 call_list(oldscope, PL_endav);
6224f72b
GS
2246#ifdef MYMALLOC
2247 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2248 dump_mstats("after execution: ");
2249#endif
37038d91 2250 ret = STATUS_EXIT;
14dd3ad8 2251 break;
6224f72b 2252 case 3:
312caa8e
CS
2253 if (PL_restartop) {
2254 POPSTACK_TO(PL_mainstack);
2255 goto redo_body;
6224f72b 2256 }
bf49b057 2257 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2258 FREETMPS;
14dd3ad8
GS
2259 ret = 1;
2260 break;
6224f72b
GS
2261 }
2262
14dd3ad8
GS
2263 JMPENV_POP;
2264 return ret;
312caa8e
CS
2265}
2266
14dd3ad8 2267
dd374669 2268STATIC void
14dd3ad8
GS
2269S_run_body(pTHX_ I32 oldscope)
2270{
97aff369 2271 dVAR;
6224f72b 2272 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2273 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2274
3280af22 2275 if (!PL_restartop) {
6224f72b 2276 DEBUG_x(dump_all());
cf2782cd 2277#ifdef DEBUGGING
ecae49c0
NC
2278 if (!DEBUG_q_TEST)
2279 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2280#endif
b900a521
JH
2281 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2282 PTR2UV(thr)));
6224f72b 2283
3280af22 2284 if (PL_minus_c) {
bf4acbe4 2285#ifdef MACOS_TRADITIONAL
e69a2255
JH
2286 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2287 (gMacPerl_ErrorFormat ? "# " : ""),
2288 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2289#else
bf49b057 2290 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2291#endif
6224f72b
GS
2292 my_exit(0);
2293 }
3280af22 2294 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2295 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2296 if (PL_initav)
2297 call_list(oldscope, PL_initav);
6224f72b
GS
2298 }
2299
2300 /* do it */
2301
3280af22 2302 if (PL_restartop) {
533c011a 2303 PL_op = PL_restartop;
3280af22 2304 PL_restartop = 0;
cea2e8a9 2305 CALLRUNOPS(aTHX);
6224f72b 2306 }
3280af22
NIS
2307 else if (PL_main_start) {
2308 CvDEPTH(PL_main_cv) = 1;
533c011a 2309 PL_op = PL_main_start;
cea2e8a9 2310 CALLRUNOPS(aTHX);
6224f72b 2311 }
f6b3007c
JH
2312 my_exit(0);
2313 /* NOTREACHED */
6224f72b
GS
2314}
2315
954c1994 2316/*
ccfc67b7
JH
2317=head1 SV Manipulation Functions
2318
954c1994
GS
2319=for apidoc p||get_sv
2320
2321Returns the SV of the specified Perl scalar. If C<create> is set and the
2322Perl variable does not exist then it will be created. If C<create> is not
2323set and the variable does not exist then NULL is returned.
2324
2325=cut
2326*/
2327
6224f72b 2328SV*
864dbfa3 2329Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2330{
2331 GV *gv;
4d1ff10f 2332#ifdef USE_5005THREADS
6224f72b
GS
2333 if (name[1] == '\0' && !isALPHA(name[0])) {
2334 PADOFFSET tmp = find_threadsv(name);
411caa50 2335 if (tmp != NOT_IN_PAD)
6224f72b 2336 return THREADSV(tmp);
6224f72b 2337 }
4d1ff10f 2338#endif /* USE_5005THREADS */
6224f72b
GS
2339 gv = gv_fetchpv(name, create, SVt_PV);
2340 if (gv)
2341 return GvSV(gv);
2342 return Nullsv;
2343}
2344
954c1994 2345/*
ccfc67b7
JH
2346=head1 Array Manipulation Functions
2347
954c1994
GS
2348=for apidoc p||get_av
2349
2350Returns the AV of the specified Perl array. If C<create> is set and the
2351Perl variable does not exist then it will be created. If C<create> is not
2352set and the variable does not exist then NULL is returned.
2353
2354=cut
2355*/
2356
6224f72b 2357AV*
864dbfa3 2358Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2359{
c4420975 2360 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2361 if (create)
2362 return GvAVn(gv);
2363 if (gv)
2364 return GvAV(gv);
7d49f689 2365 return NULL;
6224f72b
GS
2366}
2367
954c1994 2368/*
ccfc67b7
JH
2369=head1 Hash Manipulation Functions
2370
954c1994
GS
2371=for apidoc p||get_hv
2372
2373Returns the HV of the specified Perl hash. If C<create> is set and the
2374Perl variable does not exist then it will be created. If C<create> is not
2375set and the variable does not exist then NULL is returned.
2376
2377=cut
2378*/
2379
6224f72b 2380HV*
864dbfa3 2381Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2382{
890ce7af 2383 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2384 if (create)
2385 return GvHVn(gv);
2386 if (gv)
2387 return GvHV(gv);
5c284bb0 2388 return NULL;
a0d0e21e
LW
2389}
2390
954c1994 2391/*
ccfc67b7
JH
2392=head1 CV Manipulation Functions
2393
954c1994
GS
2394=for apidoc p||get_cv
2395
2396Returns the CV of the specified Perl subroutine. If C<create> is set and
2397the Perl subroutine does not exist then it will be declared (which has the
2398same effect as saying C<sub name;>). If C<create> is not set and the
2399subroutine does not exist then NULL is returned.
2400
2401=cut
2402*/
2403
a0d0e21e 2404CV*
864dbfa3 2405Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2406{
c4420975 2407 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2408 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2409 /* XXX this is probably not what they think they're getting.
2410 * It has the same effect as "sub name;", i.e. just a forward
2411 * declaration! */
8ebc5c01 2412 if (create && !GvCVu(gv))
774d564b 2413 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2414 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2415 Nullop,
a0d0e21e
LW
2416 Nullop);
2417 if (gv)
8ebc5c01 2418 return GvCVu(gv);
601f1833 2419 return NULL;
a0d0e21e
LW
2420}
2421
79072805
LW
2422/* Be sure to refetch the stack pointer after calling these routines. */
2423
954c1994 2424/*
ccfc67b7
JH
2425
2426=head1 Callback Functions
2427
954c1994
GS
2428=for apidoc p||call_argv
2429
2430Performs a callback to the specified Perl sub. See L<perlcall>.
2431
2432=cut
2433*/
2434
a0d0e21e 2435I32
8f42b153 2436Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2437
8ac85365
NIS
2438 /* See G_* flags in cop.h */
2439 /* null terminated arg list */
8990e307 2440{
97aff369 2441 dVAR;
a0d0e21e 2442 dSP;
8990e307 2443
924508f0 2444 PUSHMARK(SP);
a0d0e21e 2445 if (argv) {
8990e307 2446 while (*argv) {
a0d0e21e 2447 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2448 argv++;
2449 }
a0d0e21e 2450 PUTBACK;
8990e307 2451 }
864dbfa3 2452 return call_pv(sub_name, flags);
8990e307
LW
2453}
2454
954c1994
GS
2455/*
2456=for apidoc p||call_pv
2457
2458Performs a callback to the specified Perl sub. See L<perlcall>.
2459
2460=cut
2461*/
2462
a0d0e21e 2463I32
864dbfa3 2464Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2465 /* name of the subroutine */
2466 /* See G_* flags in cop.h */
a0d0e21e 2467{
864dbfa3 2468 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2469}
2470
954c1994
GS
2471/*
2472=for apidoc p||call_method
2473
2474Performs a callback to the specified Perl method. The blessed object must
2475be on the stack. See L<perlcall>.
2476
2477=cut
2478*/
2479
a0d0e21e 2480I32
864dbfa3 2481Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2482 /* name of the subroutine */
2483 /* See G_* flags in cop.h */
a0d0e21e 2484{
968b3946 2485 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2486}
2487
2488/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2489/*
2490=for apidoc p||call_sv
2491
2492Performs a callback to the Perl sub whose name is in the SV. See
2493L<perlcall>.
2494
2495=cut
2496*/
2497
a0d0e21e 2498I32
864dbfa3 2499Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2500 /* See G_* flags in cop.h */
a0d0e21e 2501{
27da23d5 2502 dVAR; dSP;
a0d0e21e 2503 LOGOP myop; /* fake syntax tree node */
968b3946 2504 UNOP method_op;
aa689395 2505 I32 oldmark;
13689cfe 2506 volatile I32 retval = 0;
a0d0e21e 2507 I32 oldscope;
54310121 2508 bool oldcatch = CATCH_GET;
6224f72b 2509 int ret;
c4420975 2510 OP* const oldop = PL_op;
db36c5a1 2511 dJMPENV;
1e422769 2512
a0d0e21e
LW
2513 if (flags & G_DISCARD) {
2514 ENTER;
2515 SAVETMPS;
2516 }
2517
aa689395 2518 Zero(&myop, 1, LOGOP);
54310121 2519 myop.op_next = Nullop;
f51d4af5 2520 if (!(flags & G_NOARGS))
aa689395 2521 myop.op_flags |= OPf_STACKED;
54310121
PP
2522 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2523 (flags & G_ARRAY) ? OPf_WANT_LIST :
2524 OPf_WANT_SCALAR);
462e5cf6 2525 SAVEOP();
533c011a 2526 PL_op = (OP*)&myop;
aa689395 2527
3280af22
NIS
2528 EXTEND(PL_stack_sp, 1);
2529 *++PL_stack_sp = sv;
aa689395 2530 oldmark = TOPMARK;
3280af22 2531 oldscope = PL_scopestack_ix;
a0d0e21e 2532
3280af22 2533 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2534 /* Handle first BEGIN of -d. */
3280af22 2535 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2536 /* Try harder, since this may have been a sighandler, thus
2537 * curstash may be meaningless. */
3280af22 2538 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2539 && !(flags & G_NODEBUG))
533c011a 2540 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2541
968b3946
GS
2542 if (flags & G_METHOD) {
2543 Zero(&method_op, 1, UNOP);
2544 method_op.op_next = PL_op;
2545 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2546 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2547 PL_op = (OP*)&method_op;
968b3946
GS
2548 }
2549
312caa8e 2550 if (!(flags & G_EVAL)) {
0cdb2077 2551 CATCH_SET(TRUE);
14dd3ad8 2552 call_body((OP*)&myop, FALSE);
312caa8e 2553 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2554 CATCH_SET(oldcatch);
312caa8e
CS
2555 }
2556 else {
d78bda3d 2557 myop.op_other = (OP*)&myop;
3280af22 2558 PL_markstack_ptr--;
4633a7c4
LW
2559 /* we're trying to emulate pp_entertry() here */
2560 {
c09156bb 2561 register PERL_CONTEXT *cx;
f54cb97a 2562 const I32 gimme = GIMME_V;
ac27b0f5 2563
4633a7c4
LW
2564 ENTER;
2565 SAVETMPS;
ac27b0f5 2566
1d76a5c3 2567 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2568 PUSHEVAL(cx, 0, 0);
533c011a 2569 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2570
faef0170 2571 PL_in_eval = EVAL_INEVAL;
4633a7c4 2572 if (flags & G_KEEPERR)
faef0170 2573 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2574 else
c69006e4 2575 sv_setpvn(ERRSV,"",0);
4633a7c4 2576 }
3280af22 2577 PL_markstack_ptr++;
a0d0e21e 2578
14dd3ad8 2579 JMPENV_PUSH(ret);
6224f72b
GS
2580 switch (ret) {
2581 case 0:
14dd3ad8
GS
2582 redo_body:
2583 call_body((OP*)&myop, FALSE);
312caa8e
CS
2584 retval = PL_stack_sp - (PL_stack_base + oldmark);
2585 if (!(flags & G_KEEPERR))
c69006e4 2586 sv_setpvn(ERRSV,"",0);
a0d0e21e 2587 break;
6224f72b 2588 case 1:
f86702cc 2589 STATUS_ALL_FAILURE;
a0d0e21e 2590 /* FALL THROUGH */
6224f72b 2591 case 2:
a0d0e21e 2592 /* my_exit() was called */
3280af22 2593 PL_curstash = PL_defstash;
a0d0e21e 2594 FREETMPS;
14dd3ad8 2595 JMPENV_POP;
cc3604b1 2596 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2597 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2598 my_exit_jump();
a0d0e21e 2599 /* NOTREACHED */
6224f72b 2600 case 3:
3280af22 2601 if (PL_restartop) {
533c011a 2602 PL_op = PL_restartop;
3280af22 2603 PL_restartop = 0;
312caa8e 2604 goto redo_body;
a0d0e21e 2605 }
3280af22 2606 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2607 if (flags & G_ARRAY)
2608 retval = 0;
2609 else {
2610 retval = 1;
3280af22 2611 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2612 }
312caa8e 2613 break;
a0d0e21e 2614 }
a0d0e21e 2615
3280af22 2616 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2617 SV **newsp;
2618 PMOP *newpm;
2619 I32 gimme;
c09156bb 2620 register PERL_CONTEXT *cx;
a0a2876f
LW
2621 I32 optype;
2622
2623 POPBLOCK(cx,newpm);
2624 POPEVAL(cx);
3280af22 2625 PL_curpm = newpm;
a0a2876f 2626 LEAVE;
9d4ba2ae
AL
2627 PERL_UNUSED_VAR(newsp);
2628 PERL_UNUSED_VAR(gimme);
2629 PERL_UNUSED_VAR(optype);
a0d0e21e 2630 }
14dd3ad8 2631 JMPENV_POP;
a0d0e21e 2632 }
1e422769 2633
a0d0e21e 2634 if (flags & G_DISCARD) {
3280af22 2635 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2636 retval = 0;
2637 FREETMPS;
2638 LEAVE;
2639 }
533c011a 2640 PL_op = oldop;
a0d0e21e
LW
2641 return retval;
2642}
2643
312caa8e 2644STATIC void
dd374669 2645S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2646{
97aff369 2647 dVAR;
312caa8e
CS
2648 if (PL_op == myop) {
2649 if (is_eval)
f807eda9 2650 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2651 else
f807eda9 2652 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2653 }
2654 if (PL_op)
cea2e8a9 2655 CALLRUNOPS(aTHX);
312caa8e
CS
2656}
2657
6e72f9df 2658/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2659
954c1994
GS
2660/*
2661=for apidoc p||eval_sv
2662
2663Tells Perl to C<eval> the string in the SV.
2664
2665=cut
2666*/
2667
a0d0e21e 2668I32
864dbfa3 2669Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2670
8ac85365 2671 /* See G_* flags in cop.h */
a0d0e21e 2672{
97aff369 2673 dVAR;
924508f0 2674 dSP;
a0d0e21e 2675 UNOP myop; /* fake syntax tree node */
8fa7f367 2676 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2677 volatile I32 retval = 0;
6224f72b 2678 int ret;
c4420975 2679 OP* const oldop = PL_op;
db36c5a1 2680 dJMPENV;
84902520 2681
4633a7c4
LW
2682 if (flags & G_DISCARD) {
2683 ENTER;
2684 SAVETMPS;
2685 }
2686
462e5cf6 2687 SAVEOP();
533c011a
NIS
2688 PL_op = (OP*)&myop;
2689 Zero(PL_op, 1, UNOP);
3280af22
NIS
2690 EXTEND(PL_stack_sp, 1);
2691 *++PL_stack_sp = sv;
79072805 2692
4633a7c4
LW
2693 if (!(flags & G_NOARGS))
2694 myop.op_flags = OPf_STACKED;
79072805 2695 myop.op_next = Nullop;
6e72f9df 2696 myop.op_type = OP_ENTEREVAL;
54310121
PP
2697 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2698 (flags & G_ARRAY) ? OPf_WANT_LIST :
2699 OPf_WANT_SCALAR);
6e72f9df
PP
2700 if (flags & G_KEEPERR)
2701 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2702
dedbcade
DM
2703 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2704 * before a PUSHEVAL, which corrupts the stack after a croak */
2705 TAINT_PROPER("eval_sv()");
2706
14dd3ad8 2707 JMPENV_PUSH(ret);
6224f72b
GS
2708 switch (ret) {
2709 case 0:
14dd3ad8
GS
2710 redo_body:
2711 call_body((OP*)&myop,TRUE);
312caa8e
CS
2712 retval = PL_stack_sp - (PL_stack_base + oldmark);
2713 if (!(flags & G_KEEPERR))
c69006e4 2714 sv_setpvn(ERRSV,"",0);
4633a7c4 2715 break;
6224f72b 2716 case 1:
f86702cc 2717 STATUS_ALL_FAILURE;
4633a7c4 2718 /* FALL THROUGH */
6224f72b 2719 case 2:
4633a7c4 2720 /* my_exit() was called */
3280af22 2721 PL_curstash = PL_defstash;
4633a7c4 2722 FREETMPS;
14dd3ad8 2723 JMPENV_POP;
cc3604b1 2724 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2725 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2726 my_exit_jump();
4633a7c4 2727 /* NOTREACHED */
6224f72b 2728 case 3:
3280af22 2729 if (PL_restartop) {
533c011a 2730 PL_op = PL_restartop;
3280af22 2731 PL_restartop = 0;
312caa8e 2732 goto redo_body;
4633a7c4 2733 }
3280af22 2734 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2735 if (flags & G_ARRAY)
2736 retval = 0;
2737 else {
2738 retval = 1;
3280af22 2739 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2740 }
312caa8e 2741 break;
4633a7c4
LW
2742 }
2743
14dd3ad8 2744 JMPENV_POP;
4633a7c4 2745 if (flags & G_DISCARD) {
3280af22 2746 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2747 retval = 0;
2748 FREETMPS;
2749 LEAVE;
2750 }
533c011a 2751 PL_op = oldop;
4633a7c4
LW
2752 return retval;
2753}
2754
954c1994
GS
2755/*
2756=for apidoc p||eval_pv
2757
2758Tells Perl to C<eval> the given string and return an SV* result.
2759
2760=cut
2761*/
2762
137443ea 2763SV*
864dbfa3 2764Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2765{
97aff369 2766 dVAR;
137443ea
PP
2767 dSP;
2768 SV* sv = newSVpv(p, 0);
2769
864dbfa3 2770 eval_sv(sv, G_SCALAR);
137443ea
PP
2771 SvREFCNT_dec(sv);
2772
2773 SPAGAIN;
2774 sv = POPs;
2775 PUTBACK;
2776
2d8e6c8d 2777 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2778 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2779 }
137443ea
PP
2780
2781 return sv;
2782}
2783
4633a7c4
LW
2784/* Require a module. */
2785
954c1994 2786/*
ccfc67b7
JH
2787=head1 Embedding Functions
2788
954c1994
GS
2789=for apidoc p||require_pv
2790
7d3fb230
BS
2791Tells Perl to C<require> the file named by the string argument. It is
2792analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2793implemented that way; consider using load_module instead.
954c1994 2794
7d3fb230 2795=cut */
954c1994 2796
4633a7c4 2797void
864dbfa3 2798Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2799{
97aff369 2800 dVAR;
d3acc0f7 2801 dSP;
97aff369 2802 SV* sv;
e788e7d3 2803 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2804 PUTBACK;
be41e5d9
NC
2805 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2806 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2807 SPAGAIN;
2808 POPSTACK;
79072805
LW
2809}
2810
79072805 2811void
e1ec3a88 2812Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2813{
71315bf2 2814 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2815
c4420975 2816 if (gv)
14befaf4 2817 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2818}
2819
76e3520e 2820STATIC void
e1ec3a88 2821S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2822{
ab821d7f 2823 /* This message really ought to be max 23 lines.
75c72d73 2824 * Removed -h because the user already knows that option. Others? */
fb73857a 2825
27da23d5 2826 static const char * const usage_msg[] = {
aefc56c5
SF
2827"-0[octal] specify record separator (\\0, if no argument)",
2828"-A[mod][=pattern] activate all/given assertions",
2829"-a autosplit mode with -n or -p (splits $_ into @F)",
2830"-C[number/list] enables the listed Unicode features",
2831"-c check syntax only (runs BEGIN and CHECK blocks)",
2832"-d[:debugger] run program under debugger",
2833"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2834"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2835"-E program like -e, but enables all optional features",
aefc56c5 2836"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2837"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2838"-i[extension] edit <> files in place (makes backup if extension supplied)",
2839"-Idirectory specify @INC/#include directory (several -I's allowed)",
2840"-l[octal] enable line ending processing, specifies line terminator",
2841"-[mM][-]module execute \"use/no module...\" before executing program",
2842"-n assume \"while (<>) { ... }\" loop around program",
2843"-p assume loop like -n but print line also, like sed",
2844"-P run program through C preprocessor before compilation",
2845"-s enable rudimentary parsing for switches after programfile",
2846"-S look for programfile using PATH environment variable",
2847"-t enable tainting warnings",
2848"-T enable tainting checks",
2849"-u dump core after parsing program",
2850"-U allow unsafe operations",
2851"-v print version, subversion (includes VERY IMPORTANT perl info)",
2852"-V[:variable] print configuration summary (or a single Config.pm variable)",
2853"-w enable many useful warnings (RECOMMENDED)",
2854"-W enable all warnings",
2855"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2856"-X disable all warnings",
fb73857a
PP
2857"\n",
2858NULL
2859};
27da23d5 2860 const char * const *p = usage_msg;
fb73857a 2861
b0e47665
GS
2862 PerlIO_printf(PerlIO_stdout(),
2863 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2864 name);
fb73857a 2865 while (*p)
b0e47665 2866 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2867}
2868
b4ab917c
DM
2869/* convert a string of -D options (or digits) into an int.
2870 * sets *s to point to the char after the options */
2871
2872#ifdef DEBUGGING
2873int
e1ec3a88 2874Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2875{
27da23d5 2876 static const char * const usage_msgd[] = {
e6e64d9b
JC
2877 " Debugging flag values: (see also -d)",
2878 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2879 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2880 " l Context (loop) stack processing",
2881 " t Trace execution",
2882 " o Method and overloading resolution",
2883 " c String/numeric conversions",
2884 " P Print profiling info, preprocessor command for -P, source file input state",
2885 " m Memory allocation",
2886 " f Format processing",
2887 " r Regular expression parsing and execution",
2888 " x Syntax tree dump",
3679267a 2889 " u Tainting checks",
e6e64d9b
JC
2890 " H Hash dump -- usurps values()",
2891 " X Scratchpad allocation",
2892 " D Cleaning up",
2893 " S Thread synchronization",
2894 " T Tokenising",
2895 " R Include reference counts of dumped variables (eg when using -Ds)",
2896 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2897 " v Verbose: use in conjunction with other flags",
2898 " C Copy On Write",
2899 " A Consistency checks on internal structures",
3679267a 2900 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2901 NULL
2902 };
b4ab917c
DM
2903 int i = 0;
2904 if (isALPHA(**s)) {
2905 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2906 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2907
2908 for (; isALNUM(**s); (*s)++) {
c4420975 2909 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2910 if (d)
2911 i |= 1 << (d - debopts);
2912 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2913 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2914 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2915 }
2916 }
e6e64d9b 2917 else if (isDIGIT(**s)) {
b4ab917c
DM
2918 i = atoi(*s);
2919 for (; isALNUM(**s); (*s)++) ;
2920 }
ddcf8bc1 2921 else if (givehelp) {
06e869a4 2922 const char *const *p = usage_msgd;
e6e64d9b
JC
2923 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2924 }
b4ab917c
DM
2925# ifdef EBCDIC
2926 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2927 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2928 "-Dp not implemented on this platform\n");
2929# endif
2930 return i;
2931}
2932#endif
2933
79072805
LW
2934/* This routine handles any switches that can be given during run */
2935
2936char *
864dbfa3 2937Perl_moreswitches(pTHX_ char *s)
79072805 2938{
27da23d5 2939 dVAR;
84c133a0 2940 UV rschar;
79072805
LW
2941
2942 switch (*s) {
2943 case '0':
a863c7d1 2944 {
f2095865 2945 I32 flags = 0;
a3b680e6 2946 STRLEN numlen;
f2095865
JH
2947
2948 SvREFCNT_dec(PL_rs);
2949 if (s[1] == 'x' && s[2]) {
a3b680e6 2950 const char *e = s+=2;
f2095865
JH
2951 U8 *tmps;
2952
a3b680e6
AL
2953 while (*e)
2954 e++;
f2095865
JH
2955 numlen = e - s;
2956 flags = PERL_SCAN_SILENT_ILLDIGIT;
2957 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2958 if (s + numlen < e) {
2959 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2960 numlen = 0;
2961 s--;
2962 }
396482e1 2963 PL_rs = newSVpvs("");
c5661c80 2964 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2965 tmps = (U8*)SvPVX(PL_rs);
2966 uvchr_to_utf8(tmps, rschar);
2967 SvCUR_set(PL_rs, UNISKIP(rschar));
2968 SvUTF8_on(PL_rs);
2969 }
2970 else {
2971 numlen = 4;
2972 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2973 if (rschar & ~((U8)~0))
2974 PL_rs = &PL_sv_undef;
2975 else if (!rschar && numlen >= 2)
396482e1 2976 PL_rs = newSVpvs("");
f2095865
JH
2977 else {
2978 char ch = (char)rschar;
2979 PL_rs = newSVpvn(&ch, 1);
2980 }
2981 }
800633c3 2982 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2983 return s + numlen;
a863c7d1 2984 }
46487f74 2985 case 'C':
a05d7ebb 2986 s++;
dd374669 2987 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2988 return s;
2304df62 2989 case 'F':
3280af22 2990 PL_minus_F = TRUE;
ebce5377
RGS
2991 PL_splitstr = ++s;
2992 while (*s && !isSPACE(*s)) ++s;
2993 *s = '\0';
2994 PL_splitstr = savepv(PL_splitstr);
2304df62 2995 return s;
79072805 2996 case 'a':
3280af22 2997 PL_minus_a = TRUE;
79072805
LW
2998 s++;
2999 return s;
3000 case 'c':
3280af22 3001 PL_minus_c = TRUE;
79072805
LW
3002 s++;
3003 return s;
3004 case 'd':
bbce6d69 3005 forbid_setid("-d");
4633a7c4 3006 s++;
2cbb2ee1
RGS
3007
3008 /* -dt indicates to the debugger that threads will be used */
3009 if (*s == 't' && !isALNUM(s[1])) {
3010 ++s;
3011 my_setenv("PERL5DB_THREADED", "1");
3012 }
3013
70c94a19
RR
3014 /* The following permits -d:Mod to accepts arguments following an =
3015 in the fashion that -MSome::Mod does. */
3016 if (*s == ':' || *s == '=') {
06b5626a 3017 const char *start;
396482e1 3018 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3019 start = ++s;
3020 /* We now allow -d:Module=Foo,Bar */
3021 while(isALNUM(*s) || *s==':') ++s;
3022 if (*s != '=')
3023 sv_catpv(sv, start);
3024 else {
3025 sv_catpvn(sv, start, s-start);
0c5a913d 3026 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 3027 }
4633a7c4 3028 s += strlen(s);
184f32ec 3029 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3030 }
ed094faf 3031 if (!PL_perldb) {
3280af22 3032 PL_perldb = PERLDB_ALL;
a0d0e21e 3033 init_debugger();
ed094faf 3034 }
79072805
LW
3035 return s;
3036 case 'D':
0453d815 3037 {
79072805 3038#ifdef DEBUGGING
bbce6d69 3039 forbid_setid("-D");
b4ab917c 3040 s++;
dd374669 3041 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3042#else /* !DEBUGGING */
0453d815 3043 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3044 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3045 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3046 for (s++; isALNUM(*s); s++) ;
79072805 3047#endif
79072805 3048 return s;
0453d815 3049 }
4633a7c4 3050 case 'h':
ac27b0f5 3051 usage(PL_origargv[0]);
7ca617d0 3052 my_exit(0);
79072805 3053 case 'i':
43c5f42d 3054 Safefree(PL_inplace);
c030f24b
GH
3055#if defined(__CYGWIN__) /* do backup extension automagically */
3056 if (*(s+1) == '\0') {
c86a4f2e 3057 PL_inplace = savepvs(".bak");
c030f24b
GH
3058 return s+1;
3059 }
3060#endif /* __CYGWIN__ */
3280af22 3061 PL_inplace = savepv(s+1);
a6e20a40
AL
3062 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3063 ;
7b8d334a 3064 if (*s) {
fb73857a 3065 *s++ = '\0';
7b8d334a
GS
3066 if (*s == '-') /* Additional switches on #! line. */
3067 s++;
3068 }
fb73857a 3069 return s;
4e49a025 3070 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 3071 forbid_setid("-I");
fb73857a
PP
3072 ++s;
3073 while (*s && isSPACE(*s))
3074 ++s;
3075 if (*s) {
774d564b 3076 char *e, *p;
0df16ed7
GS
3077 p = s;
3078 /* ignore trailing spaces (possibly followed by other switches) */
3079 do {
3080 for (e = p; *e && !isSPACE(*e); e++) ;
3081 p = e;
3082 while (isSPACE(*p))
3083 p++;
3084 } while (*p && *p != '-');
3085 e = savepvn(s, e-s);
88fe16b2 3086 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3087 Safefree(e);
3088 s = p;
3089 if (*s == '-')
3090 s++;
79072805
LW
3091 }
3092 else
a67e862a 3093 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3094 return s;
79072805 3095 case 'l':
3280af22 3096 PL_minus_l = TRUE;
79072805 3097 s++;
7889fe52
NIS
3098 if (PL_ors_sv) {
3099 SvREFCNT_dec(PL_ors_sv);
3100 PL_ors_sv = Nullsv;
3101 }
79072805 3102 if (isDIGIT(*s)) {
53305cf1 3103 I32 flags = 0;
a3b680e6 3104 STRLEN numlen;
396482e1 3105 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3106 numlen = 3 + (*s == '0');
3107 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3108 s += numlen;
3109 }
3110 else {
8bfdd7d9 3111 if (RsPARA(PL_rs)) {
396482e1 3112 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3113 }
3114 else {
8bfdd7d9 3115 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3116 }
79072805
LW
3117 }
3118 return s;
06492da6
SF
3119 case 'A':
3120 forbid_setid("-A");
930366bd
RGS
3121 if (!PL_preambleav)
3122 PL_preambleav = newAV();
aefc56c5
SF
3123 s++;
3124 {
44f8325f 3125 char * const start = s;
396482e1 3126 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3127 while(isALNUM(*s) || *s == ':') ++s;
3128 if (s != start) {
396482e1 3129 sv_catpvs(sv, "::");
aefc56c5
SF
3130 sv_catpvn(sv, start, s-start);
3131 }
3132 if (*s == '=') {
0c5a913d 3133 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3134 s+=strlen(s);
3135 }
3136 else if (*s != '\0') {
551405c4 3137 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3138 }
06492da6 3139 av_push(PL_preambleav, sv);
aefc56c5 3140 return s;
06492da6 3141 }
1a30305b 3142 case 'M':
bbce6d69 3143 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3144 /* FALL THROUGH */
3145 case 'm':
bbce6d69 3146 forbid_setid("-m"); /* XXX ? */
1a30305b 3147 if (*++s) {
a5f75d66 3148 char *start;
11343788 3149 SV *sv;
e1ec3a88 3150 const char *use = "use ";
a5f75d66 3151 /* -M-foo == 'no foo' */
d0043bd1
NC
3152 /* Leading space on " no " is deliberate, to make both
3153 possibilities the same length. */
3154 if (*s == '-') { use = " no "; ++s; }
3155 sv = newSVpvn(use,4);
a5f75d66 3156 start = s;
1a30305b 3157 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3158 while(isALNUM(*s) || *s==':') ++s;
3159 if (*s != '=') {
11343788 3160 sv_catpv(sv, start);
c07a80fd
PP
3161 if (*(start-1) == 'm') {
3162 if (*s != '\0')
cea2e8a9 3163 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3164 sv_catpvs( sv, " ()");
c07a80fd
PP
3165 }
3166 } else {
6df41af2 3167 if (s == start)
be98fb35
GS
3168 Perl_croak(aTHX_ "Module name required with -%c option",
3169 s[-1]);
11343788 3170 sv_catpvn(sv, start, s-start);
396482e1
GA
3171 sv_catpvs(sv, " split(/,/,q");
3172 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3173 sv_catpv(sv, ++s);
396482e1 3174 sv_catpvs(sv, "\0)");
c07a80fd 3175 }
1a30305b 3176 s += strlen(s);
5c831c24 3177 if (!PL_preambleav)
3280af22
NIS
3178 PL_preambleav = newAV();
3179 av_push(PL_preambleav, sv);
1a30305b
PP
3180 }
3181 else
9e81e6a1 3182 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3183 return s;
79072805 3184 case 'n':
3280af22 3185 PL_minus_n = TRUE;
79072805
LW
3186 s++;
3187 return s;
3188 case 'p':
3280af22 3189 PL_minus_p = TRUE;
79072805
LW
3190 s++;
3191 return s;
3192 case 's':
bbce6d69 3193 forbid_setid("-s");
3280af22 3194 PL_doswitches = TRUE;
79072805
LW
3195 s++;
3196 return s;
6537fe72
MS
3197 case 't':
3198 if (!PL_tainting)
22f7c9c9 3199 TOO_LATE_FOR('t');
6537fe72
MS
3200 s++;
3201 return s;
463ee0b2 3202 case 'T':
3280af22 3203 if (!PL_tainting)
22f7c9c9 3204 TOO_LATE_FOR('T');
463ee0b2
LW
3205 s++;
3206 return s;
79072805 3207 case 'u':
bf4acbe4
GS
3208#ifdef MACOS_TRADITIONAL
3209 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3210#endif
3280af22 3211 PL_do_undump = TRUE;
79072805
LW
3212 s++;
3213 return s;
3214 case 'U':
3280af22 3215 PL_unsafe = TRUE;
79072805
LW
3216 s++;
3217 return s;
3218 case 'v':
d7aa5382 3219 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3220 upg_version(PL_patchlevel);
8e9464f1 3221#if !defined(DGUX)
b0e47665 3222 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3223 Perl_form(aTHX_ "\nThis is perl, %"SVf
3224#ifdef PERL_PATCHNUM
3225 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3226#endif
3227 " built for %s",
d7aa5382
JP
3228 vstringify(PL_patchlevel),
3229 ARCHNAME));
8e9464f1
JH
3230#else /* DGUX */
3231/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3232 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3233 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3234 vstringify(PL_patchlevel)));
8e9464f1
JH
3235 PerlIO_printf(PerlIO_stdout(),
3236 Perl_form(aTHX_ " built under %s at %s %s\n",
3237 OSNAME, __DATE__, __TIME__));
3238 PerlIO_printf(PerlIO_stdout(),
3239 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3240 OSVERS));
8e9464f1
JH
3241#endif /* !DGUX */
3242
fb73857a
PP
3243#if defined(LOCAL_PATCH_COUNT)
3244 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3245 PerlIO_printf(PerlIO_stdout(),
3246 "\n(with %d registered patch%s, "
3247 "see perl -V for more detail)",
3248 (int)LOCAL_PATCH_COUNT,
3249 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3250#endif
1a30305b 3251
b0e47665 3252 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3253 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3254#ifdef MACOS_TRADITIONAL
3255 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3256 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3257 "maintained by Chris Nandor\n");
eae9c151 3258#endif
79072805 3259#ifdef MSDOS
b0e47665
GS
3260 PerlIO_printf(PerlIO_stdout(),
3261 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3262#endif
3263#ifdef DJGPP
b0e47665
GS
3264 PerlIO_printf(PerlIO_stdout(),
3265 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3266 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3267#endif
79072805 3268#ifdef OS2
b0e47665
GS
3269 PerlIO_printf(PerlIO_stdout(),
3270 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3271 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3272#endif
79072805 3273#ifdef atarist
b0e47665
GS
3274 PerlIO_printf(PerlIO_stdout(),
3275 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3276#endif
a3f9223b 3277#ifdef __BEOS__
b0e47665
GS
3278 PerlIO_printf(PerlIO_stdout(),
3279 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3280#endif
1d84e8df 3281#ifdef MPE
b0e47665 3282 PerlIO_printf(PerlIO_stdout(),
e583a879 3283 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3284#endif
9d116dd7 3285#ifdef OEMVS
b0e47665
GS
3286 PerlIO_printf(PerlIO_stdout(),
3287 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3288#endif
495c5fdc 3289#ifdef __VOS__
b0e47665 3290 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3291 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3292#endif
092bebab 3293#ifdef __OPEN_VM
b0e47665
GS
3294 PerlIO_printf(PerlIO_stdout(),
3295 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3296#endif
a1a0e61e 3297#ifdef POSIX_BC
b0e47665
GS
3298 PerlIO_printf(PerlIO_stdout(),
3299 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3300#endif
61ae2fbf 3301#ifdef __MINT__
b0e47665
GS
3302 PerlIO_printf(PerlIO_stdout(),
3303 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3304#endif
f83d2536 3305#ifdef EPOC
b0e47665 3306 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3307 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3308#endif
e1caacb4 3309#ifdef UNDER_CE
b475b3e6
JH
3310 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3311 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3312 wce_hitreturn();
3313#endif
a0fd4948 3314#ifdef __SYMBIAN32__
27da23d5
JH
3315 PerlIO_printf(PerlIO_stdout(),
3316 "Symbian port by Nokia, 2004-2005\n");
3317#endif
baed7233
DL
3318#ifdef BINARY_BUILD_NOTICE
3319 BINARY_BUILD_NOTICE;
3320#endif
b0e47665
GS
3321 PerlIO_printf(PerlIO_stdout(),
3322 "\n\
79072805 3323Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3324GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3325Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3326this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3327Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3328 my_exit(0);
79072805 3329 case 'w':
599cee73 3330 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3331 PL_dowarn |= G_WARN_ON;
599cee73
PM
3332 s++;
3333 return s;
3334 case 'W':
ac27b0f5 3335 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3336 if (!specialWARN(PL_compiling.cop_warnings))
3337 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3338 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3339 s++;
3340 return s;
3341 case 'X':
ac27b0f5 3342 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3343 if (!specialWARN(PL_compiling.cop_warnings))
3344 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3345 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3346 s++;
3347 return s;
a0d0e21e 3348 case '*':
79072805
LW
3349 case ' ':
3350 if (s[1] == '-') /* Additional switches on #! line. */
3351 return s+2;
3352 break;
a0d0e21e 3353 case '-':
79072805 3354 case 0:
51882d45 3355#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3356 case '\r':
3357#endif
79072805
LW
3358 case '\n':
3359 case '\t':
3360 break;
aa689395
PP
3361#ifdef ALTERNATE_SHEBANG
3362 case 'S': /* OS/2 needs -S on "extproc" line. */
3363 break;
3364#endif
a0d0e21e 3365 case 'P':
3280af22 3366 if (PL_preprocess)
a0d0e21e
LW
3367 return s+1;
3368 /* FALL THROUGH */
79072805 3369 default:
cea2e8a9 3370 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3371 }
bd61b366 3372 return NULL;
79072805
LW
3373}
3374
3375/* compliments of Tom Christiansen */
3376
3377/* unexec() can be found in the Gnu emacs distribution */
ee580363 3378/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3379
3380void
864dbfa3 3381Perl_my_unexec(pTHX)
79072805
LW
3382{
3383#ifdef UNEXEC
46fc3d4c
PP
3384 SV* prog;
3385 SV* file;
ee580363 3386 int status = 1;
79072805
LW
3387 extern int etext;
3388
ee580363 3389 prog = newSVpv(BIN_EXP, 0);
396482e1 3390 sv_catpvs(prog, "/perl");
6b88bc9c 3391 file = newSVpv(PL_origfilename, 0);
396482e1 3392 sv_catpvs(file, ".perldump");
79072805 3393
ee580363
GS
3394 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3395 /* unexec prints msg to stderr in case of failure */
6ad3d225 3396 PerlProc_exit(status);
79072805 3397#else
a5f75d66
AD
3398# ifdef VMS
3399# include <lib$routines.h>
3400 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3401# elif defined(WIN32) || defined(__CYGWIN__)
3402 Perl_croak(aTHX_ "dump is not supported");
aa689395 3403# else
79072805 3404 ABORT(); /* for use with undump */
aa689395 3405# endif
a5f75d66 3406#endif
79072805
LW
3407}
3408
cb68f92d
GS
3409/* initialize curinterp */
3410STATIC void
cea2e8a9 3411S_init_interp(pTHX)
cb68f92d 3412{
97aff369 3413 dVAR;
acfe0abc
GS
3414#ifdef MULTIPLICITY
3415# define PERLVAR(var,type)
3416# define PERLVARA(var,n,type)
3417# if defined(PERL_IMPLICIT_CONTEXT)
3418# if defined(USE_5005THREADS)
3419# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3420# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3421# else /* !USE_5005THREADS */
3422# define PERLVARI(var,type,init) aTHX->var = init;
3423# define PERLVARIC(var,type,init) aTHX->var = init;
3424# endif /* USE_5005THREADS */
3967c732 3425# else
acfe0abc
GS
3426# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3427# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3428# endif
acfe0abc
GS
3429# include "intrpvar.h"
3430# ifndef USE_5005THREADS
3431# include "thrdvar.h"
3432# endif
3433# undef PERLVAR
3434# undef PERLVARA
3435# undef PERLVARI
3436# undef PERLVARIC
3437#else
3438# define PERLVAR(var,type)
3439# define PERLVARA(var,n,type)
3440# define PERLVARI(var,type,init) PL_##var = init;
3441# define PERLVARIC(var,type,init) PL_##var = init;
3442# include "intrpvar.h"
3443# ifndef USE_5005THREADS
3444# include "thrdvar.h"
3445# endif
3446# undef PERLVAR
3447# undef PERLVARA
3448# undef PERLVARI
3449# undef PERLVARIC
cb68f92d
GS
3450#endif
3451
cb68f92d
GS
3452}
3453
76e3520e 3454STATIC void
cea2e8a9 3455S_init_main_stash(pTHX)
79072805 3456{
97aff369 3457 dVAR;
463ee0b2 3458 GV *gv;
6e72f9df 3459
3280af22 3460 PL_curstash = PL_defstash = newHV();
23579a14
NC
3461 /* We know that the string "main" will be in the global shared string
3462 table, so it's a small saving to use it rather than allocate another
3463 8 bytes. */
18916d0d 3464 PL_curstname = newSVpvs_share("main");
fafc274c 3465 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3466 /* If we hadn't caused another reference to "main" to be in the shared
3467 string table above, then it would be worth reordering these two,
3468 because otherwise all we do is delete "main" from it as a consequence
3469 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3470 SvREFCNT_dec(GvHV(gv));
23579a14 3471 hv_name_set(PL_defstash, "main", 4, 0);
3280af22 3472 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3473 SvREADONLY_on(gv);
fafc274c
NC
3474 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3475 SVt_PVAV)));
5fd80ba5 3476 SvREFCNT_inc(PL_incgv); /* Don't allow it to be freed */
3280af22 3477 GvMULTI_on(PL_incgv);
fafc274c 3478 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3479 GvMULTI_on(PL_hintgv);
fafc274c 3480 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5fd80ba5 3481 SvREFCNT_inc(PL_defgv);
fafc274c 3482 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5fd80ba5 3483 SvREFCNT_inc(PL_errgv);
3280af22 3484 GvMULTI_on(PL_errgv);
fafc274c 3485 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3486 GvMULTI_on(PL_replgv);
cea2e8a9 3487 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3488#ifdef PERL_DONT_CREATE_GVSV
3489 gv_SVadd(PL_errgv);
3490#endif
38a03e6e
MB
3491 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3492 sv_setpvn(ERRSV, "", 0);
3280af22 3493 PL_curstash = PL_defstash;
11faa288 3494 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC
3495 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3496 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3497 SVt_PVHV));
4633a7c4 3498 /* We must init $/ before switches are processed. */
864dbfa3 3499 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3500}
3501
ae3f3efd 3502/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3503STATIC void
dd374669 3504S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3505{
ae3f3efd 3506#ifndef IAMSUID
e1ec3a88
AL
3507 const char *quote;
3508 const char *code;