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Use a union for storing the shared hash key reference count, rather
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CommitLineData
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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
166f8a29
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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
NC
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,
32e30700
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);
32e30700
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174 Zero(my_perl, 1, PerlInterpreter);
175 PL_Mem = ipM;
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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
GS
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) {
2aea9f8a
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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);
0309f36e
NC
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);
3280af22
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
13137afc
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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);
729 PL_main_cv = Nullcv;
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);
869 PL_inplace = Nullch;
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 */
892 PL_osname = Nullch;
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);
910 PL_efloatbuf = Nullch;
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;
945 PL_DBcv = Nullcv;
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
GS
972 Safefree(PL_collation_name);
973 PL_collation_name = Nullch;
b9582b6a 974#endif
d33b2eba 975
b9582b6a 976#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
977 Safefree(PL_numeric_name);
978 PL_numeric_name = Nullch;
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);
bf9cdc68 1216 PL_origfilename = Nullch;
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);
bf9cdc68 1229 PL_bitcount = Nullch;
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;
5c1737d1 1374 GV* tmpgv = gv_fetchpvs("\030",TRUE, 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
1501 my_setenv("NoNe SuCh", Nullch);
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);
1545 PL_main_cv = Nullcv;
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;
e1ec3a88 1592 const char *cddir = Nullch;
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");
1701 if (!*++s && (s=argv[1]) != Nullch) {
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 {
cf756827 1954 char *popt_copy = Nullch;
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 }
2011 else if (scriptname == Nullch) {
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) &&
5c1737d1 2125 (sv = GvSV(gv_fetchpvs("\017PEN", TRUE, SVt_PV)))) {
a05d7ebb
JH
2126 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2127 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2128 if (in) {
2129 if (out)
2130 sv_setpvn(sv, ":utf8\0:utf8", 11);
2131 else
2132 sv_setpvn(sv, ":utf8\0", 6);
2133 }
2134 else if (out)
2135 sv_setpvn(sv, "\0:utf8", 6);
2136 SvSETMAGIC(sv);
2137 }
b310b053
JH
2138 }
2139 }
2140
4ffa73a3
JH
2141 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2142 if (strEQ(s, "unsafe"))
2143 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2144 else if (strEQ(s, "safe"))
2145 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2146 else
2147 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2148 }
2149
6224f72b
GS
2150 init_lexer();
2151
2152 /* now parse the script */
2153
93189314 2154 SETERRNO(0,SS_NORMAL);
3280af22 2155 PL_error_count = 0;
bf4acbe4
GS
2156#ifdef MACOS_TRADITIONAL
2157 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2158 if (PL_minus_c)
2159 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2160 else {
2161 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2162 MacPerl_MPWFileName(PL_origfilename));
2163 }
2164 }
2165#else
3280af22
NIS
2166 if (yyparse() || PL_error_count) {
2167 if (PL_minus_c)
cea2e8a9 2168 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2169 else {
cea2e8a9 2170 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2171 PL_origfilename);
6224f72b
GS
2172 }
2173 }
bf4acbe4 2174#endif
57843af0 2175 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2176 PL_curstash = PL_defstash;
2177 PL_preprocess = FALSE;
2178 if (PL_e_script) {
2179 SvREFCNT_dec(PL_e_script);
2180 PL_e_script = Nullsv;
6224f72b
GS
2181 }
2182
3280af22 2183 if (PL_do_undump)
6224f72b
GS
2184 my_unexec();
2185
57843af0
GS
2186 if (isWARN_ONCE) {
2187 SAVECOPFILE(PL_curcop);
2188 SAVECOPLINE(PL_curcop);
3280af22 2189 gv_check(PL_defstash);
57843af0 2190 }
6224f72b
GS
2191
2192 LEAVE;
2193 FREETMPS;
2194
2195#ifdef MYMALLOC
2196 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2197 dump_mstats("after compilation:");
2198#endif
2199
2200 ENTER;
3280af22 2201 PL_restartop = 0;
312caa8e 2202 return NULL;
6224f72b
GS
2203}
2204
954c1994
GS
2205/*
2206=for apidoc perl_run
2207
2208Tells a Perl interpreter to run. See L<perlembed>.
2209
2210=cut
2211*/
2212
6224f72b 2213int
0cb96387 2214perl_run(pTHXx)
6224f72b 2215{
97aff369 2216 dVAR;
6224f72b 2217 I32 oldscope;
14dd3ad8 2218 int ret = 0;
db36c5a1 2219 dJMPENV;
6224f72b 2220
9d4ba2ae
AL
2221 PERL_UNUSED_ARG(my_perl);
2222
3280af22 2223 oldscope = PL_scopestack_ix;
96e176bf
CL
2224#ifdef VMS
2225 VMSISH_HUSHED = 0;
2226#endif
6224f72b 2227
14dd3ad8 2228 JMPENV_PUSH(ret);
6224f72b
GS
2229 switch (ret) {
2230 case 1:
2231 cxstack_ix = -1; /* start context stack again */
312caa8e 2232 goto redo_body;
14dd3ad8 2233 case 0: /* normal completion */
14dd3ad8
GS
2234 redo_body:
2235 run_body(oldscope);
14dd3ad8
GS
2236 /* FALL THROUGH */
2237 case 2: /* my_exit() */
3280af22 2238 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2239 LEAVE;
2240 FREETMPS;
3280af22 2241 PL_curstash = PL_defstash;
3a1ee7e8 2242 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2243 PL_endav && !PL_minus_c)
2244 call_list(oldscope, PL_endav);
6224f72b
GS
2245#ifdef MYMALLOC
2246 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2247 dump_mstats("after execution: ");
2248#endif
37038d91 2249 ret = STATUS_EXIT;
14dd3ad8 2250 break;
6224f72b 2251 case 3:
312caa8e
CS
2252 if (PL_restartop) {
2253 POPSTACK_TO(PL_mainstack);
2254 goto redo_body;
6224f72b 2255 }
bf49b057 2256 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2257 FREETMPS;
14dd3ad8
GS
2258 ret = 1;
2259 break;
6224f72b
GS
2260 }
2261
14dd3ad8
GS
2262 JMPENV_POP;
2263 return ret;
312caa8e
CS
2264}
2265
14dd3ad8 2266
dd374669 2267STATIC void
14dd3ad8
GS
2268S_run_body(pTHX_ I32 oldscope)
2269{
97aff369 2270 dVAR;
6224f72b 2271 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2272 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2273
3280af22 2274 if (!PL_restartop) {
6224f72b 2275 DEBUG_x(dump_all());
cf2782cd 2276#ifdef DEBUGGING
ecae49c0
NC
2277 if (!DEBUG_q_TEST)
2278 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2279#endif
b900a521
JH
2280 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2281 PTR2UV(thr)));
6224f72b 2282
3280af22 2283 if (PL_minus_c) {
bf4acbe4 2284#ifdef MACOS_TRADITIONAL
e69a2255
JH
2285 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2286 (gMacPerl_ErrorFormat ? "# " : ""),
2287 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2288#else
bf49b057 2289 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2290#endif
6224f72b
GS
2291 my_exit(0);
2292 }
3280af22 2293 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2294 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2295 if (PL_initav)
2296 call_list(oldscope, PL_initav);
6224f72b
GS
2297 }
2298
2299 /* do it */
2300
3280af22 2301 if (PL_restartop) {
533c011a 2302 PL_op = PL_restartop;
3280af22 2303 PL_restartop = 0;
cea2e8a9 2304 CALLRUNOPS(aTHX);
6224f72b 2305 }
3280af22
NIS
2306 else if (PL_main_start) {
2307 CvDEPTH(PL_main_cv) = 1;
533c011a 2308 PL_op = PL_main_start;
cea2e8a9 2309 CALLRUNOPS(aTHX);
6224f72b 2310 }
f6b3007c
JH
2311 my_exit(0);
2312 /* NOTREACHED */
6224f72b
GS
2313}
2314
954c1994 2315/*
ccfc67b7
JH
2316=head1 SV Manipulation Functions
2317
954c1994
GS
2318=for apidoc p||get_sv
2319
2320Returns the SV of the specified Perl scalar. If C<create> is set and the
2321Perl variable does not exist then it will be created. If C<create> is not
2322set and the variable does not exist then NULL is returned.
2323
2324=cut
2325*/
2326
6224f72b 2327SV*
864dbfa3 2328Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2329{
2330 GV *gv;
4d1ff10f 2331#ifdef USE_5005THREADS
6224f72b
GS
2332 if (name[1] == '\0' && !isALPHA(name[0])) {
2333 PADOFFSET tmp = find_threadsv(name);
411caa50 2334 if (tmp != NOT_IN_PAD)
6224f72b 2335 return THREADSV(tmp);
6224f72b 2336 }
4d1ff10f 2337#endif /* USE_5005THREADS */
6224f72b
GS
2338 gv = gv_fetchpv(name, create, SVt_PV);
2339 if (gv)
2340 return GvSV(gv);
2341 return Nullsv;
2342}
2343
954c1994 2344/*
ccfc67b7
JH
2345=head1 Array Manipulation Functions
2346
954c1994
GS
2347=for apidoc p||get_av
2348
2349Returns the AV of the specified Perl array. If C<create> is set and the
2350Perl variable does not exist then it will be created. If C<create> is not
2351set and the variable does not exist then NULL is returned.
2352
2353=cut
2354*/
2355
6224f72b 2356AV*
864dbfa3 2357Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2358{
c4420975 2359 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2360 if (create)
2361 return GvAVn(gv);
2362 if (gv)
2363 return GvAV(gv);
7d49f689 2364 return NULL;
6224f72b
GS
2365}
2366
954c1994 2367/*
ccfc67b7
JH
2368=head1 Hash Manipulation Functions
2369
954c1994
GS
2370=for apidoc p||get_hv
2371
2372Returns the HV of the specified Perl hash. If C<create> is set and the
2373Perl variable does not exist then it will be created. If C<create> is not
2374set and the variable does not exist then NULL is returned.
2375
2376=cut
2377*/
2378
6224f72b 2379HV*
864dbfa3 2380Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2381{
890ce7af 2382 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2383 if (create)
2384 return GvHVn(gv);
2385 if (gv)
2386 return GvHV(gv);
5c284bb0 2387 return NULL;
a0d0e21e
LW
2388}
2389
954c1994 2390/*
ccfc67b7
JH
2391=head1 CV Manipulation Functions
2392
954c1994
GS
2393=for apidoc p||get_cv
2394
2395Returns the CV of the specified Perl subroutine. If C<create> is set and
2396the Perl subroutine does not exist then it will be declared (which has the
2397same effect as saying C<sub name;>). If C<create> is not set and the
2398subroutine does not exist then NULL is returned.
2399
2400=cut
2401*/
2402
a0d0e21e 2403CV*
864dbfa3 2404Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2405{
c4420975 2406 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2407 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2408 /* XXX this is probably not what they think they're getting.
2409 * It has the same effect as "sub name;", i.e. just a forward
2410 * declaration! */
8ebc5c01 2411 if (create && !GvCVu(gv))
774d564b 2412 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2413 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2414 Nullop,
a0d0e21e
LW
2415 Nullop);
2416 if (gv)
8ebc5c01 2417 return GvCVu(gv);
a0d0e21e
LW
2418 return Nullcv;
2419}
2420
79072805
LW
2421/* Be sure to refetch the stack pointer after calling these routines. */
2422
954c1994 2423/*
ccfc67b7
JH
2424
2425=head1 Callback Functions
2426
954c1994
GS
2427=for apidoc p||call_argv
2428
2429Performs a callback to the specified Perl sub. See L<perlcall>.
2430
2431=cut
2432*/
2433
a0d0e21e 2434I32
8f42b153 2435Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2436
8ac85365
NIS
2437 /* See G_* flags in cop.h */
2438 /* null terminated arg list */
8990e307 2439{
97aff369 2440 dVAR;
a0d0e21e 2441 dSP;
8990e307 2442
924508f0 2443 PUSHMARK(SP);
a0d0e21e 2444 if (argv) {
8990e307 2445 while (*argv) {
a0d0e21e 2446 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2447 argv++;
2448 }
a0d0e21e 2449 PUTBACK;
8990e307 2450 }
864dbfa3 2451 return call_pv(sub_name, flags);
8990e307
LW
2452}
2453
954c1994
GS
2454/*
2455=for apidoc p||call_pv
2456
2457Performs a callback to the specified Perl sub. See L<perlcall>.
2458
2459=cut
2460*/
2461
a0d0e21e 2462I32
864dbfa3 2463Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2464 /* name of the subroutine */
2465 /* See G_* flags in cop.h */
a0d0e21e 2466{
864dbfa3 2467 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2468}
2469
954c1994
GS
2470/*
2471=for apidoc p||call_method
2472
2473Performs a callback to the specified Perl method. The blessed object must
2474be on the stack. See L<perlcall>.
2475
2476=cut
2477*/
2478
a0d0e21e 2479I32
864dbfa3 2480Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2481 /* name of the subroutine */
2482 /* See G_* flags in cop.h */
a0d0e21e 2483{
968b3946 2484 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2485}
2486
2487/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2488/*
2489=for apidoc p||call_sv
2490
2491Performs a callback to the Perl sub whose name is in the SV. See
2492L<perlcall>.
2493
2494=cut
2495*/
2496
a0d0e21e 2497I32
864dbfa3 2498Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2499 /* See G_* flags in cop.h */
a0d0e21e 2500{
27da23d5 2501 dVAR; dSP;
a0d0e21e 2502 LOGOP myop; /* fake syntax tree node */
968b3946 2503 UNOP method_op;
aa689395 2504 I32 oldmark;
13689cfe 2505 volatile I32 retval = 0;
a0d0e21e 2506 I32 oldscope;
54310121 2507 bool oldcatch = CATCH_GET;
6224f72b 2508 int ret;
c4420975 2509 OP* const oldop = PL_op;
db36c5a1 2510 dJMPENV;
1e422769 2511
a0d0e21e
LW
2512 if (flags & G_DISCARD) {
2513 ENTER;
2514 SAVETMPS;
2515 }
2516
aa689395 2517 Zero(&myop, 1, LOGOP);
54310121 2518 myop.op_next = Nullop;
f51d4af5 2519 if (!(flags & G_NOARGS))
aa689395 2520 myop.op_flags |= OPf_STACKED;
54310121
PP
2521 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2522 (flags & G_ARRAY) ? OPf_WANT_LIST :
2523 OPf_WANT_SCALAR);
462e5cf6 2524 SAVEOP();
533c011a 2525 PL_op = (OP*)&myop;
aa689395 2526
3280af22
NIS
2527 EXTEND(PL_stack_sp, 1);
2528 *++PL_stack_sp = sv;
aa689395 2529 oldmark = TOPMARK;
3280af22 2530 oldscope = PL_scopestack_ix;
a0d0e21e 2531
3280af22 2532 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2533 /* Handle first BEGIN of -d. */
3280af22 2534 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2535 /* Try harder, since this may have been a sighandler, thus
2536 * curstash may be meaningless. */
3280af22 2537 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2538 && !(flags & G_NODEBUG))
533c011a 2539 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2540
968b3946
GS
2541 if (flags & G_METHOD) {
2542 Zero(&method_op, 1, UNOP);
2543 method_op.op_next = PL_op;
2544 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2545 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2546 PL_op = (OP*)&method_op;
968b3946
GS
2547 }
2548
312caa8e 2549 if (!(flags & G_EVAL)) {
0cdb2077 2550 CATCH_SET(TRUE);
14dd3ad8 2551 call_body((OP*)&myop, FALSE);
312caa8e 2552 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2553 CATCH_SET(oldcatch);
312caa8e
CS
2554 }
2555 else {
d78bda3d 2556 myop.op_other = (OP*)&myop;
3280af22 2557 PL_markstack_ptr--;
4633a7c4
LW
2558 /* we're trying to emulate pp_entertry() here */
2559 {
c09156bb 2560 register PERL_CONTEXT *cx;
f54cb97a 2561 const I32 gimme = GIMME_V;
ac27b0f5 2562
4633a7c4
LW
2563 ENTER;
2564 SAVETMPS;
ac27b0f5 2565
1d76a5c3 2566 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2567 PUSHEVAL(cx, 0, 0);
533c011a 2568 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2569
faef0170 2570 PL_in_eval = EVAL_INEVAL;
4633a7c4 2571 if (flags & G_KEEPERR)
faef0170 2572 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2573 else
c69006e4 2574 sv_setpvn(ERRSV,"",0);
4633a7c4 2575 }
3280af22 2576 PL_markstack_ptr++;
a0d0e21e 2577
14dd3ad8 2578 JMPENV_PUSH(ret);
6224f72b
GS
2579 switch (ret) {
2580 case 0:
14dd3ad8
GS
2581 redo_body:
2582 call_body((OP*)&myop, FALSE);
312caa8e
CS
2583 retval = PL_stack_sp - (PL_stack_base + oldmark);
2584 if (!(flags & G_KEEPERR))
c69006e4 2585 sv_setpvn(ERRSV,"",0);
a0d0e21e 2586 break;
6224f72b 2587 case 1:
f86702cc 2588 STATUS_ALL_FAILURE;
a0d0e21e 2589 /* FALL THROUGH */
6224f72b 2590 case 2:
a0d0e21e 2591 /* my_exit() was called */
3280af22 2592 PL_curstash = PL_defstash;
a0d0e21e 2593 FREETMPS;
14dd3ad8 2594 JMPENV_POP;
cc3604b1 2595 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2596 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2597 my_exit_jump();
a0d0e21e 2598 /* NOTREACHED */
6224f72b 2599 case 3:
3280af22 2600 if (PL_restartop) {
533c011a 2601 PL_op = PL_restartop;
3280af22 2602 PL_restartop = 0;
312caa8e 2603 goto redo_body;
a0d0e21e 2604 }
3280af22 2605 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2606 if (flags & G_ARRAY)
2607 retval = 0;
2608 else {
2609 retval = 1;
3280af22 2610 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2611 }
312caa8e 2612 break;
a0d0e21e 2613 }
a0d0e21e 2614
3280af22 2615 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2616 SV **newsp;
2617 PMOP *newpm;
2618 I32 gimme;
c09156bb 2619 register PERL_CONTEXT *cx;
a0a2876f
LW
2620 I32 optype;
2621
2622 POPBLOCK(cx,newpm);
2623 POPEVAL(cx);
3280af22 2624 PL_curpm = newpm;
a0a2876f 2625 LEAVE;
9d4ba2ae
AL
2626 PERL_UNUSED_VAR(newsp);
2627 PERL_UNUSED_VAR(gimme);
2628 PERL_UNUSED_VAR(optype);
a0d0e21e 2629 }
14dd3ad8 2630 JMPENV_POP;
a0d0e21e 2631 }
1e422769 2632
a0d0e21e 2633 if (flags & G_DISCARD) {
3280af22 2634 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2635 retval = 0;
2636 FREETMPS;
2637 LEAVE;
2638 }
533c011a 2639 PL_op = oldop;
a0d0e21e
LW
2640 return retval;
2641}
2642
312caa8e 2643STATIC void
dd374669 2644S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2645{
97aff369 2646 dVAR;
312caa8e
CS
2647 if (PL_op == myop) {
2648 if (is_eval)
f807eda9 2649 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2650 else
f807eda9 2651 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2652 }
2653 if (PL_op)
cea2e8a9 2654 CALLRUNOPS(aTHX);
312caa8e
CS
2655}
2656
6e72f9df 2657/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2658
954c1994
GS
2659/*
2660=for apidoc p||eval_sv
2661
2662Tells Perl to C<eval> the string in the SV.
2663
2664=cut
2665*/
2666
a0d0e21e 2667I32
864dbfa3 2668Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2669
8ac85365 2670 /* See G_* flags in cop.h */
a0d0e21e 2671{
97aff369 2672 dVAR;
924508f0 2673 dSP;
a0d0e21e 2674 UNOP myop; /* fake syntax tree node */
8fa7f367 2675 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2676 volatile I32 retval = 0;
6224f72b 2677 int ret;
c4420975 2678 OP* const oldop = PL_op;
db36c5a1 2679 dJMPENV;
84902520 2680
4633a7c4
LW
2681 if (flags & G_DISCARD) {
2682 ENTER;
2683 SAVETMPS;
2684 }
2685
462e5cf6 2686 SAVEOP();
533c011a
NIS
2687 PL_op = (OP*)&myop;
2688 Zero(PL_op, 1, UNOP);
3280af22
NIS
2689 EXTEND(PL_stack_sp, 1);
2690 *++PL_stack_sp = sv;
79072805 2691
4633a7c4
LW
2692 if (!(flags & G_NOARGS))
2693 myop.op_flags = OPf_STACKED;
79072805 2694 myop.op_next = Nullop;
6e72f9df 2695 myop.op_type = OP_ENTEREVAL;
54310121
PP
2696 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2697 (flags & G_ARRAY) ? OPf_WANT_LIST :
2698 OPf_WANT_SCALAR);
6e72f9df
PP
2699 if (flags & G_KEEPERR)
2700 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2701
dedbcade
DM
2702 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2703 * before a PUSHEVAL, which corrupts the stack after a croak */
2704 TAINT_PROPER("eval_sv()");
2705
14dd3ad8 2706 JMPENV_PUSH(ret);
6224f72b
GS
2707 switch (ret) {
2708 case 0:
14dd3ad8
GS
2709 redo_body:
2710 call_body((OP*)&myop,TRUE);
312caa8e
CS
2711 retval = PL_stack_sp - (PL_stack_base + oldmark);
2712 if (!(flags & G_KEEPERR))
c69006e4 2713 sv_setpvn(ERRSV,"",0);
4633a7c4 2714 break;
6224f72b 2715 case 1:
f86702cc 2716 STATUS_ALL_FAILURE;
4633a7c4 2717 /* FALL THROUGH */
6224f72b 2718 case 2:
4633a7c4 2719 /* my_exit() was called */
3280af22 2720 PL_curstash = PL_defstash;
4633a7c4 2721 FREETMPS;
14dd3ad8 2722 JMPENV_POP;
cc3604b1 2723 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2724 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2725 my_exit_jump();
4633a7c4 2726 /* NOTREACHED */
6224f72b 2727 case 3:
3280af22 2728 if (PL_restartop) {
533c011a 2729 PL_op = PL_restartop;
3280af22 2730 PL_restartop = 0;
312caa8e 2731 goto redo_body;
4633a7c4 2732 }
3280af22 2733 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2734 if (flags & G_ARRAY)
2735 retval = 0;
2736 else {
2737 retval = 1;
3280af22 2738 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2739 }
312caa8e 2740 break;
4633a7c4
LW
2741 }
2742
14dd3ad8 2743 JMPENV_POP;
4633a7c4 2744 if (flags & G_DISCARD) {
3280af22 2745 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2746 retval = 0;
2747 FREETMPS;
2748 LEAVE;
2749 }
533c011a 2750 PL_op = oldop;
4633a7c4
LW
2751 return retval;
2752}
2753
954c1994
GS
2754/*
2755=for apidoc p||eval_pv
2756
2757Tells Perl to C<eval> the given string and return an SV* result.
2758
2759=cut
2760*/
2761
137443ea 2762SV*
864dbfa3 2763Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2764{
97aff369 2765 dVAR;
137443ea
PP
2766 dSP;
2767 SV* sv = newSVpv(p, 0);
2768
864dbfa3 2769 eval_sv(sv, G_SCALAR);
137443ea
PP
2770 SvREFCNT_dec(sv);
2771
2772 SPAGAIN;
2773 sv = POPs;
2774 PUTBACK;
2775
2d8e6c8d 2776 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2777 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2778 }
137443ea
PP
2779
2780 return sv;
2781}
2782
4633a7c4
LW
2783/* Require a module. */
2784
954c1994 2785/*
ccfc67b7
JH
2786=head1 Embedding Functions
2787
954c1994
GS
2788=for apidoc p||require_pv
2789
7d3fb230
BS
2790Tells Perl to C<require> the file named by the string argument. It is
2791analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2792implemented that way; consider using load_module instead.
954c1994 2793
7d3fb230 2794=cut */
954c1994 2795
4633a7c4 2796void
864dbfa3 2797Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2798{
97aff369 2799 dVAR;
d3acc0f7 2800 dSP;
97aff369 2801 SV* sv;
e788e7d3 2802 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2803 PUTBACK;
be41e5d9
NC
2804 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2805 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2806 SPAGAIN;
2807 POPSTACK;
79072805
LW
2808}
2809
79072805 2810void
e1ec3a88 2811Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2812{
c4420975 2813 register GV * const gv = gv_fetchpv(sym,TRUE, SVt_PV);
79072805 2814
c4420975 2815 if (gv)
14befaf4 2816 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2817}
2818
76e3520e 2819STATIC void
e1ec3a88 2820S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2821{
ab821d7f 2822 /* This message really ought to be max 23 lines.
75c72d73 2823 * Removed -h because the user already knows that option. Others? */
fb73857a 2824
27da23d5 2825 static const char * const usage_msg[] = {
aefc56c5
SF
2826"-0[octal] specify record separator (\\0, if no argument)",
2827"-A[mod][=pattern] activate all/given assertions",
2828"-a autosplit mode with -n or -p (splits $_ into @F)",
2829"-C[number/list] enables the listed Unicode features",
2830"-c check syntax only (runs BEGIN and CHECK blocks)",
2831"-d[:debugger] run program under debugger",
2832"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2833"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2834"-E program like -e, but enables all optional features",
aefc56c5 2835"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2836"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2837"-i[extension] edit <> files in place (makes backup if extension supplied)",
2838"-Idirectory specify @INC/#include directory (several -I's allowed)",
2839"-l[octal] enable line ending processing, specifies line terminator",
2840"-[mM][-]module execute \"use/no module...\" before executing program",
2841"-n assume \"while (<>) { ... }\" loop around program",
2842"-p assume loop like -n but print line also, like sed",
2843"-P run program through C preprocessor before compilation",
2844"-s enable rudimentary parsing for switches after programfile",
2845"-S look for programfile using PATH environment variable",
2846"-t enable tainting warnings",
2847"-T enable tainting checks",
2848"-u dump core after parsing program",
2849"-U allow unsafe operations",
2850"-v print version, subversion (includes VERY IMPORTANT perl info)",
2851"-V[:variable] print configuration summary (or a single Config.pm variable)",
2852"-w enable many useful warnings (RECOMMENDED)",
2853"-W enable all warnings",
2854"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2855"-X disable all warnings",
fb73857a
PP
2856"\n",
2857NULL
2858};
27da23d5 2859 const char * const *p = usage_msg;
fb73857a 2860
b0e47665
GS
2861 PerlIO_printf(PerlIO_stdout(),
2862 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2863 name);
fb73857a 2864 while (*p)
b0e47665 2865 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2866}
2867
b4ab917c
DM
2868/* convert a string of -D options (or digits) into an int.
2869 * sets *s to point to the char after the options */
2870
2871#ifdef DEBUGGING
2872int
e1ec3a88 2873Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2874{
27da23d5 2875 static const char * const usage_msgd[] = {
e6e64d9b
JC
2876 " Debugging flag values: (see also -d)",
2877 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2878 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2879 " l Context (loop) stack processing",
2880 " t Trace execution",
2881 " o Method and overloading resolution",
2882 " c String/numeric conversions",
2883 " P Print profiling info, preprocessor command for -P, source file input state",
2884 " m Memory allocation",
2885 " f Format processing",
2886 " r Regular expression parsing and execution",
2887 " x Syntax tree dump",
3679267a 2888 " u Tainting checks",
e6e64d9b
JC
2889 " H Hash dump -- usurps values()",
2890 " X Scratchpad allocation",
2891 " D Cleaning up",
2892 " S Thread synchronization",
2893 " T Tokenising",
2894 " R Include reference counts of dumped variables (eg when using -Ds)",
2895 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2896 " v Verbose: use in conjunction with other flags",
2897 " C Copy On Write",
2898 " A Consistency checks on internal structures",
3679267a 2899 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2900 NULL
2901 };
b4ab917c
DM
2902 int i = 0;
2903 if (isALPHA(**s)) {
2904 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2905 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2906
2907 for (; isALNUM(**s); (*s)++) {
c4420975 2908 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2909 if (d)
2910 i |= 1 << (d - debopts);
2911 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2912 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2913 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2914 }
2915 }
e6e64d9b 2916 else if (isDIGIT(**s)) {
b4ab917c
DM
2917 i = atoi(*s);
2918 for (; isALNUM(**s); (*s)++) ;
2919 }
ddcf8bc1 2920 else if (givehelp) {
06e869a4 2921 const char *const *p = usage_msgd;
e6e64d9b
JC
2922 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2923 }
b4ab917c
DM
2924# ifdef EBCDIC
2925 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2926 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2927 "-Dp not implemented on this platform\n");
2928# endif
2929 return i;
2930}
2931#endif
2932
79072805
LW
2933/* This routine handles any switches that can be given during run */
2934
2935char *
864dbfa3 2936Perl_moreswitches(pTHX_ char *s)
79072805 2937{
27da23d5 2938 dVAR;
84c133a0 2939 UV rschar;
79072805
LW
2940
2941 switch (*s) {
2942 case '0':
a863c7d1 2943 {
f2095865 2944 I32 flags = 0;
a3b680e6 2945 STRLEN numlen;
f2095865
JH
2946
2947 SvREFCNT_dec(PL_rs);
2948 if (s[1] == 'x' && s[2]) {
a3b680e6 2949 const char *e = s+=2;
f2095865
JH
2950 U8 *tmps;
2951
a3b680e6
AL
2952 while (*e)
2953 e++;
f2095865
JH
2954 numlen = e - s;
2955 flags = PERL_SCAN_SILENT_ILLDIGIT;
2956 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2957 if (s + numlen < e) {
2958 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2959 numlen = 0;
2960 s--;
2961 }
396482e1 2962 PL_rs = newSVpvs("");
c5661c80 2963 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2964 tmps = (U8*)SvPVX(PL_rs);
2965 uvchr_to_utf8(tmps, rschar);
2966 SvCUR_set(PL_rs, UNISKIP(rschar));
2967 SvUTF8_on(PL_rs);
2968 }
2969 else {
2970 numlen = 4;
2971 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2972 if (rschar & ~((U8)~0))
2973 PL_rs = &PL_sv_undef;
2974 else if (!rschar && numlen >= 2)
396482e1 2975 PL_rs = newSVpvs("");
f2095865
JH
2976 else {
2977 char ch = (char)rschar;
2978 PL_rs = newSVpvn(&ch, 1);
2979 }
2980 }
800633c3 2981 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2982 return s + numlen;
a863c7d1 2983 }
46487f74 2984 case 'C':
a05d7ebb 2985 s++;
dd374669 2986 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2987 return s;
2304df62 2988 case 'F':
3280af22 2989 PL_minus_F = TRUE;
ebce5377
RGS
2990 PL_splitstr = ++s;
2991 while (*s && !isSPACE(*s)) ++s;
2992 *s = '\0';
2993 PL_splitstr = savepv(PL_splitstr);
2304df62 2994 return s;
79072805 2995 case 'a':
3280af22 2996 PL_minus_a = TRUE;
79072805
LW
2997 s++;
2998 return s;
2999 case 'c':
3280af22 3000 PL_minus_c = TRUE;
79072805
LW
3001 s++;
3002 return s;
3003 case 'd':
bbce6d69 3004 forbid_setid("-d");
4633a7c4 3005 s++;
2cbb2ee1
RGS
3006
3007 /* -dt indicates to the debugger that threads will be used */
3008 if (*s == 't' && !isALNUM(s[1])) {
3009 ++s;
3010 my_setenv("PERL5DB_THREADED", "1");
3011 }
3012
70c94a19
RR
3013 /* The following permits -d:Mod to accepts arguments following an =
3014 in the fashion that -MSome::Mod does. */
3015 if (*s == ':' || *s == '=') {
06b5626a 3016 const char *start;
396482e1 3017 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3018 start = ++s;
3019 /* We now allow -d:Module=Foo,Bar */
3020 while(isALNUM(*s) || *s==':') ++s;
3021 if (*s != '=')
3022 sv_catpv(sv, start);
3023 else {
3024 sv_catpvn(sv, start, s-start);
0c5a913d 3025 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 3026 }
4633a7c4 3027 s += strlen(s);
184f32ec 3028 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3029 }
ed094faf 3030 if (!PL_perldb) {
3280af22 3031 PL_perldb = PERLDB_ALL;
a0d0e21e 3032 init_debugger();
ed094faf 3033 }
79072805
LW
3034 return s;
3035 case 'D':
0453d815 3036 {
79072805 3037#ifdef DEBUGGING
bbce6d69 3038 forbid_setid("-D");
b4ab917c 3039 s++;
dd374669 3040 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3041#else /* !DEBUGGING */
0453d815 3042 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3043 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3044 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3045 for (s++; isALNUM(*s); s++) ;
79072805 3046#endif
79072805 3047 return s;
0453d815 3048 }
4633a7c4 3049 case 'h':
ac27b0f5 3050 usage(PL_origargv[0]);
7ca617d0 3051 my_exit(0);
79072805 3052 case 'i':
43c5f42d 3053 Safefree(PL_inplace);
c030f24b
GH
3054#if defined(__CYGWIN__) /* do backup extension automagically */
3055 if (*(s+1) == '\0') {
c86a4f2e 3056 PL_inplace = savepvs(".bak");
c030f24b
GH
3057 return s+1;
3058 }
3059#endif /* __CYGWIN__ */
3280af22 3060 PL_inplace = savepv(s+1);
a6e20a40
AL
3061 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3062 ;
7b8d334a 3063 if (*s) {
fb73857a 3064 *s++ = '\0';
7b8d334a
GS
3065 if (*s == '-') /* Additional switches on #! line. */
3066 s++;
3067 }
fb73857a 3068 return s;
4e49a025 3069 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 3070 forbid_setid("-I");
fb73857a
PP
3071 ++s;
3072 while (*s && isSPACE(*s))
3073 ++s;
3074 if (*s) {
774d564b 3075 char *e, *p;
0df16ed7
GS
3076 p = s;
3077 /* ignore trailing spaces (possibly followed by other switches) */
3078 do {
3079 for (e = p; *e && !isSPACE(*e); e++) ;
3080 p = e;
3081 while (isSPACE(*p))
3082 p++;
3083 } while (*p && *p != '-');
3084 e = savepvn(s, e-s);
88fe16b2 3085 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3086 Safefree(e);
3087 s = p;
3088 if (*s == '-')
3089 s++;
79072805
LW
3090 }
3091 else
a67e862a 3092 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3093 return s;
79072805 3094 case 'l':
3280af22 3095 PL_minus_l = TRUE;
79072805 3096 s++;
7889fe52
NIS
3097 if (PL_ors_sv) {
3098 SvREFCNT_dec(PL_ors_sv);
3099 PL_ors_sv = Nullsv;
3100 }
79072805 3101 if (isDIGIT(*s)) {
53305cf1 3102 I32 flags = 0;
a3b680e6 3103 STRLEN numlen;
396482e1 3104 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3105 numlen = 3 + (*s == '0');
3106 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3107 s += numlen;
3108 }
3109 else {
8bfdd7d9 3110 if (RsPARA(PL_rs)) {
396482e1 3111 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3112 }
3113 else {
8bfdd7d9 3114 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3115 }
79072805
LW
3116 }
3117 return s;
06492da6
SF
3118 case 'A':
3119 forbid_setid("-A");
930366bd
RGS
3120 if (!PL_preambleav)
3121 PL_preambleav = newAV();
aefc56c5
SF
3122 s++;
3123 {
44f8325f 3124 char * const start = s;
396482e1 3125 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3126 while(isALNUM(*s) || *s == ':') ++s;
3127 if (s != start) {
396482e1 3128 sv_catpvs(sv, "::");
aefc56c5
SF
3129 sv_catpvn(sv, start, s-start);
3130 }
3131 if (*s == '=') {
0c5a913d 3132 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3133 s+=strlen(s);
3134 }
3135 else if (*s != '\0') {
551405c4 3136 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3137 }
06492da6 3138 av_push(PL_preambleav, sv);
aefc56c5 3139 return s;
06492da6 3140 }
1a30305b 3141 case 'M':
bbce6d69 3142 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3143 /* FALL THROUGH */
3144 case 'm':
bbce6d69 3145 forbid_setid("-m"); /* XXX ? */
1a30305b 3146 if (*++s) {
a5f75d66 3147 char *start;
11343788 3148 SV *sv;
e1ec3a88 3149 const char *use = "use ";
a5f75d66 3150 /* -M-foo == 'no foo' */
d0043bd1
NC
3151 /* Leading space on " no " is deliberate, to make both
3152 possibilities the same length. */
3153 if (*s == '-') { use = " no "; ++s; }
3154 sv = newSVpvn(use,4);
a5f75d66 3155 start = s;
1a30305b 3156 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3157 while(isALNUM(*s) || *s==':') ++s;
3158 if (*s != '=') {
11343788 3159 sv_catpv(sv, start);
c07a80fd
PP
3160 if (*(start-1) == 'm') {
3161 if (*s != '\0')
cea2e8a9 3162 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3163 sv_catpvs( sv, " ()");
c07a80fd
PP
3164 }
3165 } else {
6df41af2 3166 if (s == start)
be98fb35
GS
3167 Perl_croak(aTHX_ "Module name required with -%c option",
3168 s[-1]);
11343788 3169 sv_catpvn(sv, start, s-start);
396482e1
GA
3170 sv_catpvs(sv, " split(/,/,q");
3171 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3172 sv_catpv(sv, ++s);
396482e1 3173 sv_catpvs(sv, "\0)");
c07a80fd 3174 }
1a30305b 3175 s += strlen(s);
5c831c24 3176 if (!PL_preambleav)
3280af22
NIS
3177 PL_preambleav = newAV();
3178 av_push(PL_preambleav, sv);
1a30305b
PP
3179 }
3180 else
9e81e6a1 3181 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3182 return s;
79072805 3183 case 'n':
3280af22 3184 PL_minus_n = TRUE;
79072805
LW
3185 s++;
3186 return s;
3187 case 'p':
3280af22 3188 PL_minus_p = TRUE;
79072805
LW
3189 s++;
3190 return s;
3191 case 's':
bbce6d69 3192 forbid_setid("-s");
3280af22 3193 PL_doswitches = TRUE;
79072805
LW
3194 s++;
3195 return s;
6537fe72
MS
3196 case 't':
3197 if (!PL_tainting)
22f7c9c9 3198 TOO_LATE_FOR('t');
6537fe72
MS
3199 s++;
3200 return s;
463ee0b2 3201 case 'T':
3280af22 3202 if (!PL_tainting)
22f7c9c9 3203 TOO_LATE_FOR('T');
463ee0b2
LW
3204 s++;
3205 return s;
79072805 3206 case 'u':
bf4acbe4
GS
3207#ifdef MACOS_TRADITIONAL
3208 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3209#endif
3280af22 3210 PL_do_undump = TRUE;
79072805
LW
3211 s++;
3212 return s;
3213 case 'U':
3280af22 3214 PL_unsafe = TRUE;
79072805
LW
3215 s++;
3216 return s;
3217 case 'v':
d7aa5382 3218 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3219 upg_version(PL_patchlevel);
8e9464f1 3220#if !defined(DGUX)
b0e47665 3221 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3222 Perl_form(aTHX_ "\nThis is perl, %"SVf
3223#ifdef PERL_PATCHNUM
3224 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3225#endif
3226 " built for %s",
d7aa5382
JP
3227 vstringify(PL_patchlevel),
3228 ARCHNAME));
8e9464f1
JH
3229#else /* DGUX */
3230/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3231 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3232 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3233 vstringify(PL_patchlevel)));
8e9464f1
JH
3234 PerlIO_printf(PerlIO_stdout(),
3235 Perl_form(aTHX_ " built under %s at %s %s\n",
3236 OSNAME, __DATE__, __TIME__));
3237 PerlIO_printf(PerlIO_stdout(),
3238 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3239 OSVERS));
8e9464f1
JH
3240#endif /* !DGUX */
3241
fb73857a
PP
3242#if defined(LOCAL_PATCH_COUNT)
3243 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3244 PerlIO_printf(PerlIO_stdout(),
3245 "\n(with %d registered patch%s, "
3246 "see perl -V for more detail)",
3247 (int)LOCAL_PATCH_COUNT,
3248 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3249#endif
1a30305b 3250
b0e47665 3251 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3252 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3253#ifdef MACOS_TRADITIONAL
3254 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3255 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3256 "maintained by Chris Nandor\n");
eae9c151 3257#endif
79072805 3258#ifdef MSDOS
b0e47665
GS
3259 PerlIO_printf(PerlIO_stdout(),
3260 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3261#endif
3262#ifdef DJGPP
b0e47665
GS
3263 PerlIO_printf(PerlIO_stdout(),
3264 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3265 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3266#endif
79072805 3267#ifdef OS2
b0e47665
GS
3268 PerlIO_printf(PerlIO_stdout(),
3269 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3270 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3271#endif
79072805 3272#ifdef atarist
b0e47665
GS
3273 PerlIO_printf(PerlIO_stdout(),
3274 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3275#endif
a3f9223b 3276#ifdef __BEOS__
b0e47665
GS
3277 PerlIO_printf(PerlIO_stdout(),
3278 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3279#endif
1d84e8df 3280#ifdef MPE
b0e47665 3281 PerlIO_printf(PerlIO_stdout(),
e583a879 3282 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3283#endif
9d116dd7 3284#ifdef OEMVS
b0e47665
GS
3285 PerlIO_printf(PerlIO_stdout(),
3286 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3287#endif
495c5fdc 3288#ifdef __VOS__
b0e47665 3289 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3290 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3291#endif
092bebab 3292#ifdef __OPEN_VM
b0e47665
GS
3293 PerlIO_printf(PerlIO_stdout(),
3294 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3295#endif
a1a0e61e 3296#ifdef POSIX_BC
b0e47665
GS
3297 PerlIO_printf(PerlIO_stdout(),
3298 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3299#endif
61ae2fbf 3300#ifdef __MINT__
b0e47665
GS
3301 PerlIO_printf(PerlIO_stdout(),
3302 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3303#endif
f83d2536 3304#ifdef EPOC
b0e47665 3305 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3306 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3307#endif
e1caacb4 3308#ifdef UNDER_CE
b475b3e6
JH
3309 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3310 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3311 wce_hitreturn();
3312#endif
a0fd4948 3313#ifdef __SYMBIAN32__
27da23d5
JH
3314 PerlIO_printf(PerlIO_stdout(),
3315 "Symbian port by Nokia, 2004-2005\n");
3316#endif
baed7233
DL
3317#ifdef BINARY_BUILD_NOTICE
3318 BINARY_BUILD_NOTICE;
3319#endif
b0e47665
GS
3320 PerlIO_printf(PerlIO_stdout(),
3321 "\n\
79072805 3322Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3323GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3324Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3325this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3326Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3327 my_exit(0);
79072805 3328 case 'w':
599cee73 3329 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3330 PL_dowarn |= G_WARN_ON;
599cee73
PM
3331 s++;
3332 return s;
3333 case 'W':
ac27b0f5 3334 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3335 if (!specialWARN(PL_compiling.cop_warnings))
3336 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3337 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3338 s++;
3339 return s;
3340 case 'X':
ac27b0f5 3341 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3342 if (!specialWARN(PL_compiling.cop_warnings))
3343 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3344 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3345 s++;
3346 return s;
a0d0e21e 3347 case '*':
79072805
LW
3348 case ' ':
3349 if (s[1] == '-') /* Additional switches on #! line. */
3350 return s+2;
3351 break;
a0d0e21e 3352 case '-':
79072805 3353 case 0:
51882d45 3354#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3355 case '\r':
3356#endif
79072805
LW
3357 case '\n':
3358 case '\t':
3359 break;
aa689395
PP
3360#ifdef ALTERNATE_SHEBANG
3361 case 'S': /* OS/2 needs -S on "extproc" line. */
3362 break;
3363#endif
a0d0e21e 3364 case 'P':
3280af22 3365 if (PL_preprocess)
a0d0e21e
LW
3366 return s+1;
3367 /* FALL THROUGH */
79072805 3368 default:
cea2e8a9 3369 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
3370 }
3371 return Nullch;
3372}
3373
3374/* compliments of Tom Christiansen */
3375
3376/* unexec() can be found in the Gnu emacs distribution */
ee580363 3377/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3378
3379void
864dbfa3 3380Perl_my_unexec(pTHX)
79072805
LW
3381{
3382#ifdef UNEXEC
46fc3d4c
PP
3383 SV* prog;
3384 SV* file;
ee580363 3385 int status = 1;
79072805
LW
3386 extern int etext;
3387
ee580363 3388 prog = newSVpv(BIN_EXP, 0);
396482e1 3389 sv_catpvs(prog, "/perl");
6b88bc9c 3390 file = newSVpv(PL_origfilename, 0);
396482e1 3391 sv_catpvs(file, ".perldump");
79072805 3392
ee580363
GS
3393 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3394 /* unexec prints msg to stderr in case of failure */
6ad3d225 3395 PerlProc_exit(status);
79072805 3396#else
a5f75d66
AD
3397# ifdef VMS
3398# include <lib$routines.h>
3399 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3400# elif defined(WIN32) || defined(__CYGWIN__)
3401 Perl_croak(aTHX_ "dump is not supported");
aa689395 3402# else
79072805 3403 ABORT(); /* for use with undump */
aa689395 3404# endif
a5f75d66 3405#endif
79072805
LW
3406}
3407
cb68f92d
GS
3408/* initialize curinterp */
3409STATIC void
cea2e8a9 3410S_init_interp(pTHX)
cb68f92d 3411{
97aff369 3412 dVAR;
acfe0abc
GS
3413#ifdef MULTIPLICITY
3414# define PERLVAR(var,type)
3415# define PERLVARA(var,n,type)
3416# if defined(PERL_IMPLICIT_CONTEXT)
3417# if defined(USE_5005THREADS)
3418# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3419# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3420# else /* !USE_5005THREADS */
3421# define PERLVARI(var,type,init) aTHX->var = init;
3422# define PERLVARIC(var,type,init) aTHX->var = init;
3423# endif /* USE_5005THREADS */
3967c732 3424# else
acfe0abc
GS
3425# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3426# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3427# endif
acfe0abc
GS
3428# include "intrpvar.h"
3429# ifndef USE_5005THREADS
3430# include "thrdvar.h"
3431# endif
3432# undef PERLVAR
3433# undef PERLVARA
3434# undef PERLVARI
3435# undef PERLVARIC
3436#else
3437# define PERLVAR(var,type)
3438# define PERLVARA(var,n,type)
3439# define PERLVARI(var,type,init) PL_##var = init;
3440# define PERLVARIC(var,type,init) PL_##var = init;
3441# include "intrpvar.h"
3442# ifndef USE_5005THREADS
3443# include "thrdvar.h"
3444# endif
3445# undef PERLVAR
3446# undef PERLVARA
3447# undef PERLVARI
3448# undef PERLVARIC
cb68f92d
GS
3449#endif
3450
cb68f92d
GS
3451}
3452
76e3520e 3453STATIC void
cea2e8a9 3454S_init_main_stash(pTHX)
79072805 3455{
97aff369 3456 dVAR;
463ee0b2 3457 GV *gv;
6e72f9df 3458
3280af22 3459 PL_curstash = PL_defstash = newHV();
23579a14
NC
3460 /* We know that the string "main" will be in the global shared string
3461 table, so it's a small saving to use it rather than allocate another
3462 8 bytes. */
18916d0d 3463 PL_curstname = newSVpvs_share("main");
5c1737d1 3464 gv = gv_fetchpvs("main::",TRUE, SVt_PVHV);
23579a14
NC
3465 /* If we hadn't caused another reference to "main" to be in the shared
3466 string table above, then it would be worth reordering these two,
3467 because otherwise all we do is delete "main" from it as a consequence
3468 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3469 SvREFCNT_dec(GvHV(gv));
23579a14 3470 hv_name_set(PL_defstash, "main", 4, 0);
3280af22 3471 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3472 SvREADONLY_on(gv);
5c1737d1 3473 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC",TRUE, SVt_PVAV)));
5fd80ba5 3474 SvREFCNT_inc(PL_incgv); /* Don't allow it to be freed */
3280af22 3475 GvMULTI_on(PL_incgv);
5c1737d1 3476 PL_hintgv = gv_fetchpvs("\010",TRUE, SVt_PV); /* ^H */
3280af22 3477 GvMULTI_on(PL_hintgv);
5c1737d1 3478 PL_defgv = gv_fetchpvs("_",TRUE, SVt_PVAV);
5fd80ba5 3479 SvREFCNT_inc(PL_defgv);
5c1737d1 3480 PL_errgv = gv_HVadd(gv_fetchpvs("@", TRUE, SVt_PV));
5fd80ba5 3481 SvREFCNT_inc(PL_errgv);
3280af22 3482 GvMULTI_on(PL_errgv);
5c1737d1 3483 PL_replgv = gv_fetchpvs("\022", TRUE, SVt_PV); /* ^R */
3280af22 3484 GvMULTI_on(PL_replgv);
cea2e8a9 3485 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3486#ifdef PERL_DONT_CREATE_GVSV
3487 gv_SVadd(PL_errgv);
3488#endif
38a03e6e
MB
3489 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3490 sv_setpvn(ERRSV, "", 0);
3280af22 3491 PL_curstash = PL_defstash;
11faa288 3492 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC
3493 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3494 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3495 SVt_PVHV));
4633a7c4 3496 /* We must init $/ before switches are processed. */
864dbfa3 3497 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3498}
3499
ae3f3efd 3500/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3501STATIC void
dd374669 3502S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3503{
ae3f3efd 3504#ifndef IAMSUID
e1ec3a88
AL
3505 const char *quote;
3506 const char *code;
3507 const char *cpp_discard_flag;
3508 const char *perl;
ae3f3efd 3509#endif
27da23d5 3510 dVAR;
1b24ed4b 3511
ae3f3efd
PS
3512 PL_fdscript = -1;
3513 PL_suidscript = -1;
79072805 3514
3280af22 3515 if (PL_e_script) {
89529cee 3516 PL_origfilename = savepvs("-e");
96436eeb 3517 }