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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
770526c1 4 * 2000, 2001, 2002, 2003, 2004, 2005, 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 *
8d063cd8
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
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15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
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95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
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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
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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;
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144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
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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
e6827a76
NC
153 }
154 else {
155 PERL_SET_THX(my_perl);
156 }
157}
06d86050 158
32e30700
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159#ifdef PERL_IMPLICIT_SYS
160PerlInterpreter *
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161perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
162 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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163 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
164 struct IPerlDir* ipD, struct IPerlSock* ipS,
165 struct IPerlProc* ipP)
166{
167 PerlInterpreter *my_perl;
9f653bb5 168 /* Newx() needs interpreter, so call malloc() instead */
32e30700 169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 170 S_init_tls_and_interp(my_perl);
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171 Zero(my_perl, 1, PerlInterpreter);
172 PL_Mem = ipM;
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173 PL_MemShared = ipMS;
174 PL_MemParse = ipMP;
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175 PL_Env = ipE;
176 PL_StdIO = ipStd;
177 PL_LIO = ipLIO;
178 PL_Dir = ipD;
179 PL_Sock = ipS;
180 PL_Proc = ipP;
7766f137 181
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182 return my_perl;
183}
184#else
954c1994
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185
186/*
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187=head1 Embedding Functions
188
954c1994
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189=for apidoc perl_alloc
190
191Allocates a new Perl interpreter. See L<perlembed>.
192
193=cut
194*/
195
93a17b20 196PerlInterpreter *
cea2e8a9 197perl_alloc(void)
79072805 198{
cea2e8a9 199 PerlInterpreter *my_perl;
79072805 200
9f653bb5 201 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 202 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 203
e6827a76 204 S_init_tls_and_interp(my_perl);
07409e01 205 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
79072805 206}
32e30700 207#endif /* PERL_IMPLICIT_SYS */
79072805 208
954c1994
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209/*
210=for apidoc perl_construct
211
212Initializes a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
79072805 217void
0cb96387 218perl_construct(pTHXx)
79072805 219{
27da23d5 220 dVAR;
9d4ba2ae 221 PERL_UNUSED_ARG(my_perl);
8990e307 222#ifdef MULTIPLICITY
54aff467 223 init_interp();
ac27b0f5 224 PL_perl_destruct_level = 1;
54aff467
GS
225#else
226 if (PL_perl_destruct_level > 0)
227 init_interp();
228#endif
33f46ff6 229 /* Init the real globals (and main thread)? */
3280af22 230 if (!PL_linestr) {
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231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
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233 PL_linestr = NEWSV(65,79);
234 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 235
3280af22 236 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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237 /* set read-only and try to insure than we wont see REFCNT==0
238 very often */
239
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240 SvREADONLY_on(&PL_sv_undef);
241 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 242
3280af22 243 sv_setpv(&PL_sv_no,PL_No);
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244 /* value lookup in void context - happens to have the side effect
245 of caching the numeric forms. */
246 SvIV(&PL_sv_no);
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247 SvNV(&PL_sv_no);
248 SvREADONLY_on(&PL_sv_no);
249 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 250
3280af22 251 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 252 SvIV(&PL_sv_yes);
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253 SvNV(&PL_sv_yes);
254 SvREADONLY_on(&PL_sv_yes);
255 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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256
257 SvREADONLY_on(&PL_sv_placeholder);
258 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 259 }
79072805 260
8aad04aa 261 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
3280af22 262 PL_pidstatus = newHV();
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263 }
264
8bfdd7d9 265 PL_rs = newSVpvn("\n", 1);
dc92893f 266
cea2e8a9 267 init_stacks();
79072805 268
748a9306 269 init_ids();
3280af22 270 PL_lex_state = LEX_NOTPARSING;
a5f75d66 271
312caa8e 272 JMPENV_BOOTSTRAP;
f86702cc
PP
273 STATUS_ALL_SUCCESS;
274
0672f40e 275 init_i18nl10n(1);
36477c24 276 SET_NUMERIC_STANDARD();
0b5b802d 277
ab821d7f 278#if defined(LOCAL_PATCH_COUNT)
3280af22 279 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
280#endif
281
52853b95
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282#ifdef HAVE_INTERP_INTERN
283 sys_intern_init();
284#endif
285
3a1ee7e8 286 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 287
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288 PL_fdpid = newAV(); /* for remembering popen pids by fd */
289 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 290 PL_errors = newSVpvn("",0);
48c6b404 291 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
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292 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
293 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 294#ifdef USE_ITHREADS
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295 PL_regex_padav = newAV();
296 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
297 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 298#endif
e5dd39fc 299#ifdef USE_REENTRANT_API
59bd0823 300 Perl_reentrant_init(aTHX);
e5dd39fc 301#endif
3d47000e
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302
303 /* Note that strtab is a rather special HV. Assumptions are made
304 about not iterating on it, and not adding tie magic to it.
305 It is properly deallocated in perl_destruct() */
306 PL_strtab = newHV();
307
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308 HvSHAREKEYS_off(PL_strtab); /* mandatory */
309 hv_ksplit(PL_strtab, 512);
310
0631ea03
AB
311#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
312 _dyld_lookup_and_bind
313 ("__environ", (unsigned long *) &environ_pointer, NULL);
314#endif /* environ */
315
2f42fcb0
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316#ifndef PERL_MICRO
317# ifdef USE_ENVIRON_ARRAY
0631ea03 318 PL_origenviron = environ;
2f42fcb0 319# endif
0631ea03
AB
320#endif
321
5311654c 322 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 323 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
324 * BeOS has those, but returns the wrong value.
325 * The HZ if not originally defined has been by now
326 * been defined as CLK_TCK, if available. */
dbc1d986 327#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
328 PL_clocktick = sysconf(_SC_CLK_TCK);
329 if (PL_clocktick <= 0)
330#endif
331 PL_clocktick = HZ;
332
081fc587
AB
333 PL_stashcache = newHV();
334
e6830b13
NC
335 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
336 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 337
27da23d5
JH
338#ifdef HAS_MMAP
339 if (!PL_mmap_page_size) {
340#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
341 {
342 SETERRNO(0, SS_NORMAL);
343# ifdef _SC_PAGESIZE
344 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
345# else
346 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
347# endif
348 if ((long) PL_mmap_page_size < 0) {
349 if (errno) {
350 SV *error = ERRSV;
27da23d5 351 (void) SvUPGRADE(error, SVt_PV);
0510663f 352 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
353 }
354 else
355 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
356 }
357 }
358#else
359# ifdef HAS_GETPAGESIZE
360 PL_mmap_page_size = getpagesize();
361# else
362# if defined(I_SYS_PARAM) && defined(PAGESIZE)
363 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
364# endif
365# endif
366#endif
367 if (PL_mmap_page_size <= 0)
368 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
369 (IV) PL_mmap_page_size);
370 }
371#endif /* HAS_MMAP */
372
373#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
374 PL_timesbase.tms_utime = 0;
375 PL_timesbase.tms_stime = 0;
376 PL_timesbase.tms_cutime = 0;
377 PL_timesbase.tms_cstime = 0;
378#endif
379
8990e307 380 ENTER;
79072805
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381}
382
954c1994 383/*
62375a60
NIS
384=for apidoc nothreadhook
385
386Stub that provides thread hook for perl_destruct when there are
387no threads.
388
389=cut
390*/
391
392int
4e9e3734 393Perl_nothreadhook(pTHX)
62375a60
NIS
394{
395 return 0;
396}
397
41e4abd8
NC
398#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
399void
400Perl_dump_sv_child(pTHX_ SV *sv)
401{
402 ssize_t got;
bf357333
NC
403 const int sock = PL_dumper_fd;
404 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
405 union control_un control;
406 struct msghdr msg;
808ad2d0 407 struct iovec vec[2];
bf357333 408 struct cmsghdr *cmptr;
808ad2d0
NC
409 int returned_errno;
410 unsigned char buffer[256];
41e4abd8 411
bf357333 412 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
413 return;
414
415 PerlIO_flush(Perl_debug_log);
416
bf357333
NC
417 /* All these shenanigans are to pass a file descriptor over to our child for
418 it to dump out to. We can't let it hold open the file descriptor when it
419 forks, as the file descriptor it will dump to can turn out to be one end
420 of pipe that some other process will wait on for EOF. (So as it would
421 be open, the wait would be forever. */
422
423 msg.msg_control = control.control;
424 msg.msg_controllen = sizeof(control.control);
425 /* We're a connected socket so we don't need a destination */
426 msg.msg_name = NULL;
427 msg.msg_namelen = 0;
428 msg.msg_iov = vec;
808ad2d0 429 msg.msg_iovlen = 1;
bf357333
NC
430
431 cmptr = CMSG_FIRSTHDR(&msg);
432 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
433 cmptr->cmsg_level = SOL_SOCKET;
434 cmptr->cmsg_type = SCM_RIGHTS;
435 *((int *)CMSG_DATA(cmptr)) = 1;
436
437 vec[0].iov_base = (void*)&sv;
438 vec[0].iov_len = sizeof(sv);
439 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
440
441 if(got < 0) {
bf357333 442 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
443 abort();
444 }
bf357333
NC
445 if(got < sizeof(sv)) {
446 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
447 abort();
448 }
449
808ad2d0
NC
450 /* Return protocol is
451 int: errno value
452 unsigned char: length of location string (0 for empty)
453 unsigned char*: string (not terminated)
454 */
455 vec[0].iov_base = (void*)&returned_errno;
456 vec[0].iov_len = sizeof(returned_errno);
457 vec[1].iov_base = buffer;
458 vec[1].iov_len = 1;
459
460 got = readv(sock, vec, 2);
41e4abd8
NC
461
462 if(got < 0) {
463 perror("Debug leaking scalars parent read failed");
808ad2d0 464 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
465 abort();
466 }
808ad2d0 467 if(got < sizeof(returned_errno) + 1) {
41e4abd8 468 perror("Debug leaking scalars parent short read");
808ad2d0 469 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
470 abort();
471 }
472
808ad2d0
NC
473 if (*buffer) {
474 got = read(sock, buffer + 1, *buffer);
475 if(got < 0) {
476 perror("Debug leaking scalars parent read 2 failed");
477 PerlIO_flush(PerlIO_stderr());
478 abort();
479 }
480
481 if(got < *buffer) {
482 perror("Debug leaking scalars parent short read 2");
483 PerlIO_flush(PerlIO_stderr());
484 abort();
485 }
486 }
487
488 if (returned_errno || *buffer) {
489 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
490 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
491 returned_errno, strerror(returned_errno));
41e4abd8
NC
492 }
493}
494#endif
495
62375a60 496/*
954c1994
GS
497=for apidoc perl_destruct
498
499Shuts down a Perl interpreter. See L<perlembed>.
500
501=cut
502*/
503
31d77e54 504int
0cb96387 505perl_destruct(pTHXx)
79072805 506{
27da23d5 507 dVAR;
7c474504 508 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 509 HV *hv;
2aa47728 510#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
511 pid_t child;
512#endif
8990e307 513
9d4ba2ae
AL
514 PERL_UNUSED_ARG(my_perl);
515
7766f137
GS
516 /* wait for all pseudo-forked children to finish */
517 PERL_WAIT_FOR_CHILDREN;
518
3280af22 519 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
520#ifdef DEBUGGING
521 {
9d4ba2ae
AL
522 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
523 if (s) {
e1ec3a88 524 const int i = atoi(s);
5f05dabc
PP
525 if (destruct_level < i)
526 destruct_level = i;
527 }
4633a7c4
LW
528 }
529#endif
530
27da23d5 531 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
532 dJMPENV;
533 int x = 0;
534
535 JMPENV_PUSH(x);
1b6737cc 536 PERL_UNUSED_VAR(x);
f3faeb53
AB
537 if (PL_endav && !PL_minus_c)
538 call_list(PL_scopestack_ix, PL_endav);
539 JMPENV_POP;
26f423df 540 }
f3faeb53 541 LEAVE;
a0d0e21e
LW
542 FREETMPS;
543
e00b64d4 544 /* Need to flush since END blocks can produce output */
f13a2bc0 545 my_fflush_all();
e00b64d4 546
62375a60
NIS
547 if (CALL_FPTR(PL_threadhook)(aTHX)) {
548 /* Threads hook has vetoed further cleanup */
b47cad08 549 return STATUS_NATIVE_EXPORT;
62375a60
NIS
550 }
551
2aa47728
NC
552#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
553 if (destruct_level != 0) {
554 /* Fork here to create a child. Our child's job is to preserve the
555 state of scalars prior to destruction, so that we can instruct it
556 to dump any scalars that we later find have leaked.
557 There's no subtlety in this code - it assumes POSIX, and it doesn't
558 fail gracefully */
559 int fd[2];
560
561 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
562 perror("Debug leaking scalars socketpair failed");
563 abort();
564 }
565
566 child = fork();
567 if(child == -1) {
568 perror("Debug leaking scalars fork failed");
569 abort();
570 }
571 if (!child) {
572 /* We are the child */
3125a5a4
NC
573 const int sock = fd[1];
574 const int debug_fd = PerlIO_fileno(Perl_debug_log);
575 int f;
808ad2d0
NC
576 const char *where;
577 /* Our success message is an integer 0, and a char 0 */
578 static const char success[sizeof(int) + 1];
3125a5a4 579
2aa47728 580 close(fd[0]);
2aa47728 581
3125a5a4
NC
582 /* We need to close all other file descriptors otherwise we end up
583 with interesting hangs, where the parent closes its end of a
584 pipe, and sits waiting for (another) child to terminate. Only
585 that child never terminates, because it never gets EOF, because
bf357333
NC
586 we also have the far end of the pipe open. We even need to
587 close the debugging fd, because sometimes it happens to be one
588 end of a pipe, and a process is waiting on the other end for
589 EOF. Normally it would be closed at some point earlier in
590 destruction, but if we happen to cause the pipe to remain open,
591 EOF never occurs, and we get an infinite hang. Hence all the
592 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
593
594 f = sysconf(_SC_OPEN_MAX);
595 if(f < 0) {
808ad2d0
NC
596 where = "sysconf failed";
597 goto abort;
3125a5a4
NC
598 }
599 while (f--) {
600 if (f == sock)
601 continue;
3125a5a4
NC
602 close(f);
603 }
604
2aa47728
NC
605 while (1) {
606 SV *target;
bf357333
NC
607 union control_un control;
608 struct msghdr msg;
609 struct iovec vec[1];
610 struct cmsghdr *cmptr;
611 ssize_t got;
612 int got_fd;
613
614 msg.msg_control = control.control;
615 msg.msg_controllen = sizeof(control.control);
616 /* We're a connected socket so we don't need a source */
617 msg.msg_name = NULL;
618 msg.msg_namelen = 0;
619 msg.msg_iov = vec;
620 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
621
622 vec[0].iov_base = (void*)&target;
623 vec[0].iov_len = sizeof(target);
624
625 got = recvmsg(sock, &msg, 0);
2aa47728
NC
626
627 if(got == 0)
628 break;
629 if(got < 0) {
808ad2d0
NC
630 where = "recv failed";
631 goto abort;
2aa47728
NC
632 }
633 if(got < sizeof(target)) {
808ad2d0
NC
634 where = "short recv";
635 goto abort;
2aa47728 636 }
bf357333 637
808ad2d0
NC
638 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
639 where = "no cmsg";
640 goto abort;
641 }
642 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
643 where = "wrong cmsg_len";
644 goto abort;
645 }
646 if(cmptr->cmsg_level != SOL_SOCKET) {
647 where = "wrong cmsg_level";
648 goto abort;
649 }
650 if(cmptr->cmsg_type != SCM_RIGHTS) {
651 where = "wrong cmsg_type";
652 goto abort;
653 }
bf357333
NC
654
655 got_fd = *(int*)CMSG_DATA(cmptr);
656 /* For our last little bit of trickery, put the file descriptor
657 back into Perl_debug_log, as if we never actually closed it
658 */
808ad2d0
NC
659 if(got_fd != debug_fd) {
660 if (dup2(got_fd, debug_fd) == -1) {
661 where = "dup2";
662 goto abort;
663 }
664 }
2aa47728 665 sv_dump(target);
bf357333 666
2aa47728
NC
667 PerlIO_flush(Perl_debug_log);
668
808ad2d0 669 got = write(sock, &success, sizeof(success));
2aa47728
NC
670
671 if(got < 0) {
808ad2d0
NC
672 where = "write failed";
673 goto abort;
2aa47728 674 }
808ad2d0
NC
675 if(got < sizeof(success)) {
676 where = "short write";
677 goto abort;
2aa47728
NC
678 }
679 }
680 _exit(0);
808ad2d0
NC
681 abort:
682 {
683 int send_errno = errno;
684 unsigned char length = (unsigned char) strlen(where);
685 struct iovec failure[3] = {
686 {(void*)&send_errno, sizeof(send_errno)},
687 {&length, 1},
688 {(void*)where, length}
689 };
690 int got = writev(sock, failure, 3);
691 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
692 in the parent if we try to read from the socketpair after the
693 child has exited, even if there was data to read.
694 So sleep a bit to give the parent a fighting chance of
695 reading the data. */
696 sleep(2);
697 _exit((got == -1) ? errno : 0);
698 }
bf357333 699 /* End of child. */
2aa47728 700 }
41e4abd8 701 PL_dumper_fd = fd[0];
2aa47728
NC
702 close(fd[1]);
703 }
704#endif
705
ff0cee69
PP
706 /* We must account for everything. */
707
708 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
709 /* Do this now, because destroying ops can cause new SVs to be generated
710 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
711 PL_curcop to point to a valid op from which the filename structure
712 member is copied. */
713 PL_curcop = &PL_compiling;
3280af22 714 if (PL_main_root) {
4e380990
DM
715 /* ensure comppad/curpad to refer to main's pad */
716 if (CvPADLIST(PL_main_cv)) {
717 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
718 }
3280af22
NIS
719 op_free(PL_main_root);
720 PL_main_root = Nullop;
a0d0e21e 721 }
3280af22
NIS
722 PL_main_start = Nullop;
723 SvREFCNT_dec(PL_main_cv);
724 PL_main_cv = Nullcv;
24d3c518 725 PL_dirty = TRUE;
ff0cee69 726
13621cfb
NIS
727 /* Tell PerlIO we are about to tear things apart in case
728 we have layers which are using resources that should
729 be cleaned up now.
730 */
731
732 PerlIO_destruct(aTHX);
733
3280af22 734 if (PL_sv_objcount) {
a0d0e21e
LW
735 /*
736 * Try to destruct global references. We do this first so that the
737 * destructors and destructees still exist. Some sv's might remain.
738 * Non-referenced objects are on their own.
739 */
a0d0e21e 740 sv_clean_objs();
bf9cdc68 741 PL_sv_objcount = 0;
8990e307
LW
742 }
743
5cd24f17 744 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
745 SvREFCNT_dec(PL_warnhook);
746 PL_warnhook = Nullsv;
747 SvREFCNT_dec(PL_diehook);
748 PL_diehook = Nullsv;
5cd24f17 749
4b556e6c 750 /* call exit list functions */
3280af22 751 while (PL_exitlistlen-- > 0)
acfe0abc 752 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 753
3280af22 754 Safefree(PL_exitlist);
4b556e6c 755
1c4916e5
CB
756 PL_exitlist = NULL;
757 PL_exitlistlen = 0;
758
a0d0e21e 759 if (destruct_level == 0){
8990e307 760
a0d0e21e 761 DEBUG_P(debprofdump());
ac27b0f5 762
56a2bab7
NIS
763#if defined(PERLIO_LAYERS)
764 /* No more IO - including error messages ! */
765 PerlIO_cleanup(aTHX);
766#endif
767
a0d0e21e 768 /* The exit() function will do everything that needs doing. */
b47cad08 769 return STATUS_NATIVE_EXPORT;
a0d0e21e 770 }
5dd60ef7 771
551a8b83 772 /* jettison our possibly duplicated environment */
4b647fb0
DM
773 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
774 * so we certainly shouldn't free it here
775 */
2f42fcb0 776#ifndef PERL_MICRO
4b647fb0 777#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 778 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
779#ifdef USE_ITHREADS
780 /* only main thread can free environ[0] contents */
781 && PL_curinterp == aTHX
782#endif
783 )
784 {
551a8b83
JH
785 I32 i;
786
787 for (i = 0; environ[i]; i++)
4b420006 788 safesysfree(environ[i]);
0631ea03 789
4b420006
JH
790 /* Must use safesysfree() when working with environ. */
791 safesysfree(environ);
551a8b83
JH
792
793 environ = PL_origenviron;
794 }
795#endif
2f42fcb0 796#endif /* !PERL_MICRO */
551a8b83 797
804ffa60
DM
798 /* reset so print() ends up where we expect */
799 setdefout(Nullgv);
800
5f8cb046
DM
801#ifdef USE_ITHREADS
802 /* the syntax tree is shared between clones
803 * so op_free(PL_main_root) only ReREFCNT_dec's
804 * REGEXPs in the parent interpreter
805 * we need to manually ReREFCNT_dec for the clones
806 */
807 {
808 I32 i = AvFILLp(PL_regex_padav) + 1;
809 SV **ary = AvARRAY(PL_regex_padav);
810
811 while (i) {
35061a7e 812 SV *resv = ary[--i];
35061a7e
DM
813
814 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 815 /* this is PL_reg_curpm, already freed
35061a7e
DM
816 * flag is set in regexec.c:S_regtry
817 */
818 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 819 }
1cc8b4c5
AB
820 else if(SvREPADTMP(resv)) {
821 SvREPADTMP_off(resv);
822 }
a560f29b
NC
823 else if(SvIOKp(resv)) {
824 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
825 ReREFCNT_dec(re);
826 }
827 }
828 }
829 SvREFCNT_dec(PL_regex_padav);
830 PL_regex_padav = Nullav;
831 PL_regex_pad = NULL;
832#endif
833
081fc587
AB
834 SvREFCNT_dec((SV*) PL_stashcache);
835 PL_stashcache = NULL;
836
5f05dabc
PP
837 /* loosen bonds of global variables */
838
3280af22
NIS
839 if(PL_rsfp) {
840 (void)PerlIO_close(PL_rsfp);
841 PL_rsfp = Nullfp;
8ebc5c01
PP
842 }
843
844 /* Filters for program text */
3280af22
NIS
845 SvREFCNT_dec(PL_rsfp_filters);
846 PL_rsfp_filters = Nullav;
8ebc5c01
PP
847
848 /* switches */
3280af22
NIS
849 PL_preprocess = FALSE;
850 PL_minus_n = FALSE;
851 PL_minus_p = FALSE;
852 PL_minus_l = FALSE;
853 PL_minus_a = FALSE;
854 PL_minus_F = FALSE;
855 PL_doswitches = FALSE;
599cee73 856 PL_dowarn = G_WARN_OFF;
3280af22
NIS
857 PL_doextract = FALSE;
858 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
859 PL_unsafe = FALSE;
860
861 Safefree(PL_inplace);
862 PL_inplace = Nullch;
a7cb1f99 863 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
864
865 if (PL_e_script) {
866 SvREFCNT_dec(PL_e_script);
867 PL_e_script = Nullsv;
8ebc5c01
PP
868 }
869
bf9cdc68
RG
870 PL_perldb = 0;
871
8ebc5c01
PP
872 /* magical thingies */
873
7889fe52
NIS
874 SvREFCNT_dec(PL_ofs_sv); /* $, */
875 PL_ofs_sv = Nullsv;
5f05dabc 876
7889fe52
NIS
877 SvREFCNT_dec(PL_ors_sv); /* $\ */
878 PL_ors_sv = Nullsv;
8ebc5c01 879
3280af22
NIS
880 SvREFCNT_dec(PL_rs); /* $/ */
881 PL_rs = Nullsv;
dc92893f 882
d33b2eba
GS
883 PL_multiline = 0; /* $* */
884 Safefree(PL_osname); /* $^O */
885 PL_osname = Nullch;
5f05dabc 886
3280af22
NIS
887 SvREFCNT_dec(PL_statname);
888 PL_statname = Nullsv;
889 PL_statgv = Nullgv;
5f05dabc 890
8ebc5c01
PP
891 /* defgv, aka *_ should be taken care of elsewhere */
892
8ebc5c01 893 /* clean up after study() */
3280af22
NIS
894 SvREFCNT_dec(PL_lastscream);
895 PL_lastscream = Nullsv;
896 Safefree(PL_screamfirst);
897 PL_screamfirst = 0;
898 Safefree(PL_screamnext);
899 PL_screamnext = 0;
8ebc5c01 900
7d5ea4e7
GS
901 /* float buffer */
902 Safefree(PL_efloatbuf);
903 PL_efloatbuf = Nullch;
904 PL_efloatsize = 0;
905
8ebc5c01 906 /* startup and shutdown function lists */
3280af22 907 SvREFCNT_dec(PL_beginav);
5a837c8f 908 SvREFCNT_dec(PL_beginav_save);
3280af22 909 SvREFCNT_dec(PL_endav);
7d30b5c4 910 SvREFCNT_dec(PL_checkav);
ece599bd 911 SvREFCNT_dec(PL_checkav_save);
3280af22
NIS
912 SvREFCNT_dec(PL_initav);
913 PL_beginav = Nullav;
5a837c8f 914 PL_beginav_save = Nullav;
3280af22 915 PL_endav = Nullav;
7d30b5c4 916 PL_checkav = Nullav;
ece599bd 917 PL_checkav_save = Nullav;
3280af22 918 PL_initav = Nullav;
5618dfe8 919
8ebc5c01 920 /* shortcuts just get cleared */
3280af22 921 PL_envgv = Nullgv;
3280af22
NIS
922 PL_incgv = Nullgv;
923 PL_hintgv = Nullgv;
924 PL_errgv = Nullgv;
925 PL_argvgv = Nullgv;
926 PL_argvoutgv = Nullgv;
927 PL_stdingv = Nullgv;
bf49b057 928 PL_stderrgv = Nullgv;
3280af22
NIS
929 PL_last_in_gv = Nullgv;
930 PL_replgv = Nullgv;
bf9cdc68
RG
931 PL_DBgv = Nullgv;
932 PL_DBline = Nullgv;
933 PL_DBsub = Nullgv;
934 PL_DBsingle = Nullsv;
935 PL_DBtrace = Nullsv;
936 PL_DBsignal = Nullsv;
937 PL_DBassertion = Nullsv;
938 PL_DBcv = Nullcv;
939 PL_dbargs = Nullav;
5c831c24 940 PL_debstash = Nullhv;
8ebc5c01 941
7a1c5554
GS
942 SvREFCNT_dec(PL_argvout_stack);
943 PL_argvout_stack = Nullav;
8ebc5c01 944
5c831c24
GS
945 SvREFCNT_dec(PL_modglobal);
946 PL_modglobal = Nullhv;
947 SvREFCNT_dec(PL_preambleav);
948 PL_preambleav = Nullav;
949 SvREFCNT_dec(PL_subname);
950 PL_subname = Nullsv;
951 SvREFCNT_dec(PL_linestr);
952 PL_linestr = Nullsv;
953 SvREFCNT_dec(PL_pidstatus);
954 PL_pidstatus = Nullhv;
955 SvREFCNT_dec(PL_toptarget);
956 PL_toptarget = Nullsv;
957 SvREFCNT_dec(PL_bodytarget);
958 PL_bodytarget = Nullsv;
959 PL_formtarget = Nullsv;
960
d33b2eba 961 /* free locale stuff */
b9582b6a 962#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
963 Safefree(PL_collation_name);
964 PL_collation_name = Nullch;
b9582b6a 965#endif
d33b2eba 966
b9582b6a 967#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
968 Safefree(PL_numeric_name);
969 PL_numeric_name = Nullch;
a453c169 970 SvREFCNT_dec(PL_numeric_radix_sv);
bf9cdc68 971 PL_numeric_radix_sv = Nullsv;
b9582b6a 972#endif
d33b2eba 973
5c831c24
GS
974 /* clear utf8 character classes */
975 SvREFCNT_dec(PL_utf8_alnum);
976 SvREFCNT_dec(PL_utf8_alnumc);
977 SvREFCNT_dec(PL_utf8_ascii);
978 SvREFCNT_dec(PL_utf8_alpha);
979 SvREFCNT_dec(PL_utf8_space);
980 SvREFCNT_dec(PL_utf8_cntrl);
981 SvREFCNT_dec(PL_utf8_graph);
982 SvREFCNT_dec(PL_utf8_digit);
983 SvREFCNT_dec(PL_utf8_upper);
984 SvREFCNT_dec(PL_utf8_lower);
985 SvREFCNT_dec(PL_utf8_print);
986 SvREFCNT_dec(PL_utf8_punct);
987 SvREFCNT_dec(PL_utf8_xdigit);
988 SvREFCNT_dec(PL_utf8_mark);
989 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 990 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 991 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 992 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
993 SvREFCNT_dec(PL_utf8_idstart);
994 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS
995 PL_utf8_alnum = Nullsv;
996 PL_utf8_alnumc = Nullsv;
997 PL_utf8_ascii = Nullsv;
998 PL_utf8_alpha = Nullsv;
999 PL_utf8_space = Nullsv;
1000 PL_utf8_cntrl = Nullsv;
1001 PL_utf8_graph = Nullsv;
1002 PL_utf8_digit = Nullsv;
1003 PL_utf8_upper = Nullsv;
1004 PL_utf8_lower = Nullsv;
1005 PL_utf8_print = Nullsv;
1006 PL_utf8_punct = Nullsv;
1007 PL_utf8_xdigit = Nullsv;
1008 PL_utf8_mark = Nullsv;
1009 PL_utf8_toupper = Nullsv;
1010 PL_utf8_totitle = Nullsv;
1011 PL_utf8_tolower = Nullsv;
b4e400f9 1012 PL_utf8_tofold = Nullsv;
82686b01
JH
1013 PL_utf8_idstart = Nullsv;
1014 PL_utf8_idcont = Nullsv;
5c831c24 1015
971a9dd3
GS
1016 if (!specialWARN(PL_compiling.cop_warnings))
1017 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 1018 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
1019 if (!specialCopIO(PL_compiling.cop_io))
1020 SvREFCNT_dec(PL_compiling.cop_io);
1021 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS
1022 CopFILE_free(&PL_compiling);
1023 CopSTASH_free(&PL_compiling);
5c831c24 1024
a0d0e21e 1025 /* Prepare to destruct main symbol table. */
5f05dabc 1026
3280af22
NIS
1027 hv = PL_defstash;
1028 PL_defstash = 0;
a0d0e21e 1029 SvREFCNT_dec(hv);
5c831c24
GS
1030 SvREFCNT_dec(PL_curstname);
1031 PL_curstname = Nullsv;
a0d0e21e 1032
5a844595
GS
1033 /* clear queued errors */
1034 SvREFCNT_dec(PL_errors);
1035 PL_errors = Nullsv;
1036
a0d0e21e 1037 FREETMPS;
0453d815 1038 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1039 if (PL_scopestack_ix != 0)
9014280d 1040 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1041 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1042 (long)PL_scopestack_ix);
1043 if (PL_savestack_ix != 0)
9014280d 1044 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1045 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1046 (long)PL_savestack_ix);
1047 if (PL_tmps_floor != -1)
9014280d 1048 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1049 (long)PL_tmps_floor + 1);
a0d0e21e 1050 if (cxstack_ix != -1)
9014280d 1051 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1052 (long)cxstack_ix + 1);
a0d0e21e 1053 }
8990e307
LW
1054
1055 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1056 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1057 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1058
1059 /* the 2 is for PL_fdpid and PL_strtab */
1060 while (PL_sv_count > 2 && sv_clean_all())
1061 ;
1062
d33b2eba
GS
1063 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1064 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1065 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1066 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1067
d4777f27
GS
1068 AvREAL_off(PL_fdpid); /* no surviving entries */
1069 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
1070 PL_fdpid = Nullav;
1071
6c644e78
GS
1072#ifdef HAVE_INTERP_INTERN
1073 sys_intern_clear();
1074#endif
1075
6e72f9df
PP
1076 /* Destruct the global string table. */
1077 {
1078 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1079 * so that sv_free() won't fail on them.
80459961
NC
1080 * Now that the global string table is using a single hunk of memory
1081 * for both HE and HEK, we either need to explicitly unshare it the
1082 * correct way, or actually free things here.
6e72f9df 1083 */
80459961
NC
1084 I32 riter = 0;
1085 const I32 max = HvMAX(PL_strtab);
1086 HE **array = HvARRAY(PL_strtab);
1087 HE *hent = array[0];
1088
6e72f9df 1089 for (;;) {
0453d815 1090 if (hent && ckWARN_d(WARN_INTERNAL)) {
80459961 1091 HE *next = HeNEXT(hent);
9014280d 1092 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1093 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 1094 HeVAL(hent) - Nullsv, HeKEY(hent));
80459961
NC
1095 Safefree(hent);
1096 hent = next;
6e72f9df
PP
1097 }
1098 if (!hent) {
1099 if (++riter > max)
1100 break;
1101 hent = array[riter];
1102 }
1103 }
80459961
NC
1104
1105 Safefree(array);
1106 HvARRAY(PL_strtab) = 0;
1107 HvTOTALKEYS(PL_strtab) = 0;
1108 HvFILL(PL_strtab) = 0;
6e72f9df 1109 }
3280af22 1110 SvREFCNT_dec(PL_strtab);
6e72f9df 1111
e652bb2f 1112#ifdef USE_ITHREADS
c21d1a0f 1113 /* free the pointer tables used for cloning */
a0739874 1114 ptr_table_free(PL_ptr_table);
bf9cdc68 1115 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1116#endif
a0739874 1117
d33b2eba
GS
1118 /* free special SVs */
1119
1120 SvREFCNT(&PL_sv_yes) = 0;
1121 sv_clear(&PL_sv_yes);
1122 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1123 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1124
1125 SvREFCNT(&PL_sv_no) = 0;
1126 sv_clear(&PL_sv_no);
1127 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1128 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1129
9f375a43
DM
1130 {
1131 int i;
1132 for (i=0; i<=2; i++) {
1133 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1134 sv_clear(PERL_DEBUG_PAD(i));
1135 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1136 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1137 }
1138 }
1139
0453d815 1140 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1141 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1142
eba0f806
DM
1143#ifdef DEBUG_LEAKING_SCALARS
1144 if (PL_sv_count != 0) {
1145 SV* sva;
1146 SV* sv;
1147 register SV* svend;
1148
1149 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1150 svend = &sva[SvREFCNT(sva)];
1151 for (sv = sva + 1; sv < svend; ++sv) {
1152 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1153 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1154 " flags=0x%"UVxf
fd0854ff
DM
1155 " refcnt=%"UVuf pTHX__FORMAT "\n"
1156 "\tallocated at %s:%d %s %s%s\n",
1157 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1158 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1159 sv->sv_debug_line,
1160 sv->sv_debug_inpad ? "for" : "by",
1161 sv->sv_debug_optype ?
1162 PL_op_name[sv->sv_debug_optype]: "(none)",
1163 sv->sv_debug_cloned ? " (cloned)" : ""
1164 );
2aa47728 1165#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1166 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1167#endif
eba0f806
DM
1168 }
1169 }
1170 }
1171 }
2aa47728
NC
1172#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1173 {
1174 int status;
1175 fd_set rset;
1176 /* Wait for up to 4 seconds for child to terminate.
1177 This seems to be the least effort way of timing out on reaping
1178 its exit status. */
1179 struct timeval waitfor = {4, 0};
41e4abd8 1180 int sock = PL_dumper_fd;
2aa47728
NC
1181
1182 shutdown(sock, 1);
1183 FD_ZERO(&rset);
1184 FD_SET(sock, &rset);
1185 select(sock + 1, &rset, NULL, NULL, &waitfor);
1186 waitpid(child, &status, WNOHANG);
1187 close(sock);
1188 }
1189#endif
eba0f806 1190#endif
bf9cdc68 1191 PL_sv_count = 0;
eba0f806
DM
1192
1193
56a2bab7 1194#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1195 /* No more IO - including error messages ! */
1196 PerlIO_cleanup(aTHX);
1197#endif
1198
9f4bd222
NIS
1199 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1200 as currently layers use it rather than Nullsv as a marker
1201 for no arg - and will try and SvREFCNT_dec it.
1202 */
1203 SvREFCNT(&PL_sv_undef) = 0;
1204 SvREADONLY_off(&PL_sv_undef);
1205
3280af22 1206 Safefree(PL_origfilename);
bf9cdc68 1207 PL_origfilename = Nullch;
3280af22 1208 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1209 PL_reg_start_tmp = (char**)NULL;
1210 PL_reg_start_tmpl = 0;
43c5f42d 1211 Safefree(PL_reg_curpm);
82ba1be6 1212 Safefree(PL_reg_poscache);
dd28f7bb 1213 free_tied_hv_pool();
3280af22 1214 Safefree(PL_op_mask);
cf36064f 1215 Safefree(PL_psig_ptr);
bf9cdc68 1216 PL_psig_ptr = (SV**)NULL;
cf36064f 1217 Safefree(PL_psig_name);
bf9cdc68 1218 PL_psig_name = (SV**)NULL;
2c2666fc 1219 Safefree(PL_bitcount);
bf9cdc68 1220 PL_bitcount = Nullch;
ce08f86c 1221 Safefree(PL_psig_pend);
bf9cdc68
RG
1222 PL_psig_pend = (int*)NULL;
1223 PL_formfeed = Nullsv;
6e72f9df 1224 nuke_stacks();
bf9cdc68
RG
1225 PL_tainting = FALSE;
1226 PL_taint_warn = FALSE;
3280af22 1227 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1228 PL_debug = 0;
ac27b0f5 1229
a0d0e21e 1230 DEBUG_P(debprofdump());
d33b2eba 1231
e5dd39fc 1232#ifdef USE_REENTRANT_API
10bc17b6 1233 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1234#endif
1235
612f20c3
GS
1236 sv_free_arenas();
1237
fc36a67e
PP
1238 /* As the absolutely last thing, free the non-arena SV for mess() */
1239
3280af22 1240 if (PL_mess_sv) {
f350b448
NC
1241 /* we know that type == SVt_PVMG */
1242
9c63abab 1243 /* it could have accumulated taint magic */
f350b448
NC
1244 MAGIC* mg;
1245 MAGIC* moremagic;
1246 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1247 moremagic = mg->mg_moremagic;
1248 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1249 && mg->mg_len >= 0)
1250 Safefree(mg->mg_ptr);
1251 Safefree(mg);
9c63abab 1252 }
f350b448 1253
fc36a67e 1254 /* we know that type >= SVt_PV */
8bd4d4c5 1255 SvPV_free(PL_mess_sv);
3280af22
NIS
1256 Safefree(SvANY(PL_mess_sv));
1257 Safefree(PL_mess_sv);
1258 PL_mess_sv = Nullsv;
fc36a67e 1259 }
31d77e54 1260 return STATUS_NATIVE_EXPORT;
79072805
LW
1261}
1262
954c1994
GS
1263/*
1264=for apidoc perl_free
1265
1266Releases a Perl interpreter. See L<perlembed>.
1267
1268=cut
1269*/
1270
79072805 1271void
0cb96387 1272perl_free(pTHXx)
79072805 1273{
acfe0abc 1274#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1275# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
1276# ifdef NETWARE
1277 void *host = nw_internal_host;
1278# else
1279 void *host = w32_internal_host;
1280# endif
ce3e5b80 1281 PerlMem_free(aTHXx);
acfe0abc 1282# ifdef NETWARE
011f1a1a 1283 nw_delete_internal_host(host);
acfe0abc
GS
1284# else
1285 win32_delete_internal_host(host);
1286# endif
1c0ca838
GS
1287# else
1288 PerlMem_free(aTHXx);
1289# endif
acfe0abc
GS
1290#else
1291 PerlMem_free(aTHXx);
76e3520e 1292#endif
79072805
LW
1293}
1294
aebd1ac7
GA
1295#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1296/* provide destructors to clean up the thread key when libperl is unloaded */
1297#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1298
110d3f98 1299#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1300#pragma fini "perl_fini"
1301#endif
1302
0dbb1585
AL
1303static void
1304#if defined(__GNUC__)
1305__attribute__((destructor))
aebd1ac7 1306#endif
de009b76 1307perl_fini(void)
aebd1ac7 1308{
27da23d5 1309 dVAR;
aebd1ac7
GA
1310 if (PL_curinterp)
1311 FREE_THREAD_KEY;
1312}
1313
1314#endif /* WIN32 */
1315#endif /* THREADS */
1316
4b556e6c 1317void
864dbfa3 1318Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1319{
3280af22
NIS
1320 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1321 PL_exitlist[PL_exitlistlen].fn = fn;
1322 PL_exitlist[PL_exitlistlen].ptr = ptr;
1323 ++PL_exitlistlen;
4b556e6c
JD
1324}
1325
56cf6df8
RGS
1326#ifdef HAS_PROCSELFEXE
1327/* This is a function so that we don't hold on to MAXPATHLEN
1328 bytes of stack longer than necessary
1329 */
1330STATIC void
e1ec3a88 1331S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1332{
1333 char buf[MAXPATHLEN];
1334 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1335
1336 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1337 includes a spurious NUL which will cause $^X to fail in system
1338 or backticks (this will prevent extensions from being built and
1339 many tests from working). readlink is not meant to add a NUL.
1340 Normal readlink works fine.
1341 */
1342 if (len > 0 && buf[len-1] == '\0') {
1343 len--;
1344 }
1345
1346 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1347 returning the text "unknown" from the readlink rather than the path
1348 to the executable (or returning an error from the readlink). Any valid
1349 path has a '/' in it somewhere, so use that to validate the result.
1350 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1351 */
1352 if (len > 0 && memchr(buf, '/', len)) {
1353 sv_setpvn(sv,buf,len);
1354 }
1355 else {
1356 sv_setpv(sv,arg0);
1357 }
1358}
1359#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1360
1361STATIC void
1362S_set_caret_X(pTHX) {
1363 GV* tmpgv = gv_fetchpv("\030",TRUE, SVt_PV); /* $^X */
1364 if (tmpgv) {
1365#ifdef HAS_PROCSELFEXE
1366 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1367#else
1368#ifdef OS2
c69033f2 1369 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1370#else
c69033f2 1371 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1372#endif
1373#endif
1374 }
1375}
1376
954c1994
GS
1377/*
1378=for apidoc perl_parse
1379
1380Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1381
1382=cut
1383*/
1384
79072805 1385int
0cb96387 1386perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1387{
27da23d5 1388 dVAR;
6224f72b 1389 I32 oldscope;
6224f72b 1390 int ret;
db36c5a1 1391 dJMPENV;
8d063cd8 1392
9d4ba2ae
AL
1393 PERL_UNUSED_VAR(my_perl);
1394
a687059c
LW
1395#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1396#ifdef IAMSUID
1397#undef IAMSUID
cea2e8a9 1398 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1399setuid perl scripts securely.\n");
ae3f3efd 1400#endif /* IAMSUID */
a687059c
LW
1401#endif
1402
b0891165
JH
1403#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1404 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1405 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1406 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1407 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1408 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1409 if (!PL_rehash_seed_set)
1410 PL_rehash_seed = get_hash_seed();
b0891165 1411 {
9d4ba2ae 1412 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1413
1b6737cc
AL
1414 if (s && (atoi(s) == 1))
1415 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1416 }
1417#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1418
3280af22 1419 PL_origargc = argc;
e2975953 1420 PL_origargv = argv;
a0d0e21e 1421
54bfe034 1422 {
3cb9023d
JH
1423 /* Set PL_origalen be the sum of the contiguous argv[]
1424 * elements plus the size of the env in case that it is
e9137a8e 1425 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1426 * as the maximum modifiable length of $0. In the worst case
1427 * the area we are able to modify is limited to the size of
43c32782 1428 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1429 * --jhi */
e1ec3a88 1430 const char *s = NULL;
54bfe034 1431 int i;
1b6737cc 1432 const UV mask =
7d8e7db3 1433 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1434 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1435 const UV aligned =
43c32782
JH
1436 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1437
1438 /* See if all the arguments are contiguous in memory. Note
1439 * that 'contiguous' is a loose term because some platforms
1440 * align the argv[] and the envp[]. If the arguments look
1441 * like non-aligned, assume that they are 'strictly' or
1442 * 'traditionally' contiguous. If the arguments look like
1443 * aligned, we just check that they are within aligned
1444 * PTRSIZE bytes. As long as no system has something bizarre
1445 * like the argv[] interleaved with some other data, we are
1446 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1447 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1448 while (*s) s++;
1449 for (i = 1; i < PL_origargc; i++) {
1450 if ((PL_origargv[i] == s + 1
43c32782 1451#ifdef OS2
c8941eeb 1452 || PL_origargv[i] == s + 2
43c32782 1453#endif
c8941eeb
JH
1454 )
1455 ||
1456 (aligned &&
1457 (PL_origargv[i] > s &&
1458 PL_origargv[i] <=
1459 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1460 )
1461 {
1462 s = PL_origargv[i];
1463 while (*s) s++;
1464 }
1465 else
1466 break;
54bfe034 1467 }
54bfe034 1468 }
3cb9023d 1469 /* Can we grab env area too to be used as the area for $0? */
43c32782
JH
1470 if (PL_origenviron) {
1471 if ((PL_origenviron[0] == s + 1
1472#ifdef OS2
1473 || (PL_origenviron[0] == s + 9 && (s += 8))
1474#endif
1475 )
1476 ||
1477 (aligned &&
1478 (PL_origenviron[0] > s &&
1479 PL_origenviron[0] <=
1480 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1481 )
1482 {
1483#ifndef OS2
1484 s = PL_origenviron[0];
1485 while (*s) s++;
1486#endif
1487 my_setenv("NoNe SuCh", Nullch);
1488 /* Force copy of environment. */
1489 for (i = 1; PL_origenviron[i]; i++) {
1490 if (PL_origenviron[i] == s + 1
1491 ||
1492 (aligned &&
1493 (PL_origenviron[i] > s &&
1494 PL_origenviron[i] <=
1495 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1496 )
1497 {
1498 s = PL_origenviron[i];
1499 while (*s) s++;
1500 }
1501 else
1502 break;
54bfe034 1503 }
43c32782 1504 }
54bfe034 1505 }
284e1220 1506 PL_origalen = s - PL_origargv[0] + 1;
54bfe034
JH
1507 }
1508
3280af22 1509 if (PL_do_undump) {
a0d0e21e
LW
1510
1511 /* Come here if running an undumped a.out. */
1512
3280af22
NIS
1513 PL_origfilename = savepv(argv[0]);
1514 PL_do_undump = FALSE;
a0d0e21e 1515 cxstack_ix = -1; /* start label stack again */
748a9306 1516 init_ids();
b7975bdd
NC
1517 assert (!PL_tainted);
1518 TAINT;
1519 S_set_caret_X(aTHX);
1520 TAINT_NOT;
a0d0e21e
LW
1521 init_postdump_symbols(argc,argv,env);
1522 return 0;
1523 }
1524
3280af22 1525 if (PL_main_root) {
3280af22
NIS
1526 op_free(PL_main_root);
1527 PL_main_root = Nullop;
ff0cee69 1528 }
3280af22
NIS
1529 PL_main_start = Nullop;
1530 SvREFCNT_dec(PL_main_cv);
1531 PL_main_cv = Nullcv;
79072805 1532
3280af22
NIS
1533 time(&PL_basetime);
1534 oldscope = PL_scopestack_ix;
599cee73 1535 PL_dowarn = G_WARN_OFF;
f86702cc 1536
14dd3ad8 1537 JMPENV_PUSH(ret);
6224f72b 1538 switch (ret) {
312caa8e 1539 case 0:
14dd3ad8 1540 parse_body(env,xsinit);
7d30b5c4
GS
1541 if (PL_checkav)
1542 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1543 ret = 0;
1544 break;
6224f72b
GS
1545 case 1:
1546 STATUS_ALL_FAILURE;
1547 /* FALL THROUGH */
1548 case 2:
1549 /* my_exit() was called */
3280af22 1550 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1551 LEAVE;
1552 FREETMPS;
3280af22 1553 PL_curstash = PL_defstash;
7d30b5c4
GS
1554 if (PL_checkav)
1555 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1556 ret = STATUS_NATIVE_EXPORT;
1557 break;
6224f72b 1558 case 3:
bf49b057 1559 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1560 ret = 1;
1561 break;
6224f72b 1562 }
14dd3ad8
GS
1563 JMPENV_POP;
1564 return ret;
1565}
1566
312caa8e 1567STATIC void *
14dd3ad8 1568S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1569{
27da23d5 1570 dVAR;
312caa8e 1571 int argc = PL_origargc;
8f42b153 1572 char **argv = PL_origargv;
e1ec3a88 1573 const char *scriptname = NULL;
312caa8e 1574 VOL bool dosearch = FALSE;
e1ec3a88 1575 const char *validarg = "";
312caa8e
CS
1576 register SV *sv;
1577 register char *s;
e1ec3a88 1578 const char *cddir = Nullch;
ab019eaa 1579#ifdef USE_SITECUSTOMIZE
20ef40cf 1580 bool minus_f = FALSE;
ab019eaa 1581#endif
312caa8e 1582
ae3f3efd
PS
1583 PL_fdscript = -1;
1584 PL_suidscript = -1;
3280af22 1585 sv_setpvn(PL_linestr,"",0);
79cb57f6 1586 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
1587 SAVEFREESV(sv);
1588 init_main_stash();
54310121 1589
6224f72b
GS
1590 for (argc--,argv++; argc > 0; argc--,argv++) {
1591 if (argv[0][0] != '-' || !argv[0][1])
1592 break;
1593#ifdef DOSUID
1594 if (*validarg)
1595 validarg = " PHOOEY ";
1596 else
1597 validarg = argv[0];
ae3f3efd
PS
1598 /*
1599 * Can we rely on the kernel to start scripts with argv[1] set to
1600 * contain all #! line switches (the whole line)? (argv[0] is set to
1601 * the interpreter name, argv[2] to the script name; argv[3] and
1602 * above may contain other arguments.)
1603 */
13281fa4 1604#endif
6224f72b
GS
1605 s = argv[0]+1;
1606 reswitch:
1607 switch (*s) {
729a02f2 1608 case 'C':
1d5472a9
GS
1609#ifndef PERL_STRICT_CR
1610 case '\r':
1611#endif
6224f72b
GS
1612 case ' ':
1613 case '0':
1614 case 'F':
1615 case 'a':
1616 case 'c':
1617 case 'd':
1618 case 'D':
1619 case 'h':
1620 case 'i':
1621 case 'l':
1622 case 'M':
1623 case 'm':
1624 case 'n':
1625 case 'p':
1626 case 's':
1627 case 'u':
1628 case 'U':
1629 case 'v':
599cee73
PM
1630 case 'W':
1631 case 'X':
6224f72b 1632 case 'w':
06492da6 1633 case 'A':
155aba94 1634 if ((s = moreswitches(s)))
6224f72b
GS
1635 goto reswitch;
1636 break;
33b78306 1637
1dbad523 1638 case 't':
22f7c9c9 1639 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1640 if( !PL_tainting ) {
1641 PL_taint_warn = TRUE;
1642 PL_tainting = TRUE;
1643 }
1644 s++;
1645 goto reswitch;
6224f72b 1646 case 'T':
22f7c9c9 1647 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1648 PL_tainting = TRUE;
317ea90d 1649 PL_taint_warn = FALSE;
6224f72b
GS
1650 s++;
1651 goto reswitch;
f86702cc 1652
6224f72b 1653 case 'e':
bf4acbe4
GS
1654#ifdef MACOS_TRADITIONAL
1655 /* ignore -e for Dev:Pseudo argument */
1656 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1657 break;
bf4acbe4 1658#endif
ae3f3efd 1659 forbid_setid("-e");
3280af22 1660 if (!PL_e_script) {
79cb57f6 1661 PL_e_script = newSVpvn("",0);
0cb96387 1662 filter_add(read_e_script, NULL);
6224f72b
GS
1663 }
1664 if (*++s)
3280af22 1665 sv_catpv(PL_e_script, s);
6224f72b 1666 else if (argv[1]) {
3280af22 1667 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1668 argc--,argv++;
1669 }
1670 else
cea2e8a9 1671 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1672 sv_catpv(PL_e_script, "\n");
6224f72b 1673 break;
afe37c7d 1674
20ef40cf 1675 case 'f':
f5542d3a 1676#ifdef USE_SITECUSTOMIZE
20ef40cf 1677 minus_f = TRUE;
f5542d3a 1678#endif
20ef40cf
GA
1679 s++;
1680 goto reswitch;
1681
6224f72b
GS
1682 case 'I': /* -I handled both here and in moreswitches() */
1683 forbid_setid("-I");
1684 if (!*++s && (s=argv[1]) != Nullch) {
1685 argc--,argv++;
1686 }
6224f72b 1687 if (s && *s) {
0df16ed7 1688 STRLEN len = strlen(s);
aec46f14 1689 const char * const p = savepvn(s, len);
88fe16b2 1690 incpush(p, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
1691 sv_catpvn(sv, "-I", 2);
1692 sv_catpvn(sv, p, len);
1693 sv_catpvn(sv, " ", 1);
6224f72b 1694 Safefree(p);
0df16ed7
GS
1695 }
1696 else
a67e862a 1697 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1698 break;
1699 case 'P':
1700 forbid_setid("-P");
3280af22 1701 PL_preprocess = TRUE;
6224f72b
GS
1702 s++;
1703 goto reswitch;
1704 case 'S':
1705 forbid_setid("-S");
1706 dosearch = TRUE;
1707 s++;
1708 goto reswitch;
1709 case 'V':
7edfd0ef
NC
1710 {
1711 SV *opts_prog;
1712
1713 if (!PL_preambleav)
1714 PL_preambleav = newAV();
1715 av_push(PL_preambleav,
1716 newSVpv("use Config;",0));
1717 if (*++s != ':') {
1718 STRLEN opts;
1719
1720 opts_prog = newSVpv("print Config::myconfig(),",0);
6224f72b 1721#ifdef VMS
7edfd0ef 1722 sv_catpv(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1723#else
7edfd0ef 1724 sv_catpv(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1725#endif
7edfd0ef 1726 opts = SvCUR(opts_prog);
efcaa95b 1727
e2e4dbf1 1728 sv_catpv(opts_prog,"\" Compile-time options:"
6224f72b 1729# ifdef DEBUGGING
e2e4dbf1 1730 " DEBUGGING"
6224f72b 1731# endif
85e1fcb9 1732# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1733 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1734# endif
1735# ifdef FAKE_THREADS
e2e4dbf1 1736 " FAKE_THREADS"
85e1fcb9 1737# endif
6224f72b 1738# ifdef MULTIPLICITY
e2e4dbf1 1739 " MULTIPLICITY"
6224f72b 1740# endif
85e1fcb9 1741# ifdef MYMALLOC
e2e4dbf1 1742 " MYMALLOC"
85e1fcb9
SH
1743# endif
1744# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1745 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1746# endif
1747# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1748 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1749# endif
1750# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1751 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1752# endif
1753# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1754 " PERL_IMPLICIT_SYS"
85e1fcb9
SH
1755# endif
1756# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1757 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1758# endif
1759# ifdef PERL_NEED_APPCTX
e2e4dbf1 1760 " PERL_NEED_APPCTX"
85e1fcb9
SH
1761# endif
1762# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1763 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1764# endif
1765# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1766 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9
SH
1767# endif
1768# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1769 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1770# endif
1771# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1772 " THREADS_HAVE_PIDS"
85e1fcb9 1773# endif
4d1ff10f 1774# ifdef USE_5005THREADS
e2e4dbf1 1775 " USE_5005THREADS"
b363f7ed 1776# endif
85e1fcb9 1777# ifdef USE_64_BIT_ALL
e2e4dbf1 1778 " USE_64_BIT_ALL"
ac5e8965 1779# endif
10cc9d2a 1780# ifdef USE_64_BIT_INT
e2e4dbf1 1781 " USE_64_BIT_INT"
10cc9d2a 1782# endif
85e1fcb9 1783# ifdef USE_ITHREADS
e2e4dbf1 1784 " USE_ITHREADS"
85e1fcb9
SH
1785# endif
1786# ifdef USE_LARGE_FILES
e2e4dbf1 1787 " USE_LARGE_FILES"
ac5e8965
JH
1788# endif
1789# ifdef USE_LONG_DOUBLE
e2e4dbf1 1790 " USE_LONG_DOUBLE"
ac5e8965 1791# endif
85e1fcb9 1792# ifdef USE_PERLIO
e2e4dbf1 1793 " USE_PERLIO"
53430762 1794# endif
85e1fcb9 1795# ifdef USE_REENTRANT_API
e2e4dbf1 1796 " USE_REENTRANT_API"
85e1fcb9
SH
1797# endif
1798# ifdef USE_SFIO
e2e4dbf1 1799 " USE_SFIO"
ac5e8965 1800# endif
20ef40cf 1801# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1802 " USE_SITECUSTOMIZE"
20ef40cf 1803# endif
85e1fcb9 1804# ifdef USE_SOCKS
e2e4dbf1 1805 " USE_SOCKS"
b363f7ed 1806# endif
e2e4dbf1 1807 );
efcaa95b 1808
7edfd0ef
NC
1809 while (SvCUR(opts_prog) > opts+76) {
1810 /* find last space after "options: " and before col 76
1811 */
efcaa95b 1812
7edfd0ef
NC
1813 const char *space;
1814 char *pv = SvPV_nolen(opts_prog);
1815 const char c = pv[opts+76];
1816 pv[opts+76] = '\0';
1817 space = strrchr(pv+opts+26, ' ');
1818 pv[opts+76] = c;
1819 if (!space) break; /* "Can't happen" */
efcaa95b 1820
7edfd0ef 1821 /* break the line before that space */
efcaa95b 1822
7edfd0ef
NC
1823 opts = space - pv;
1824 sv_insert(opts_prog, opts, 0,
1825 "\\n ", 25);
1826 }
efcaa95b 1827
7edfd0ef 1828 sv_catpv(opts_prog,"\\n\",");
b363f7ed 1829
6224f72b 1830#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1831 if (LOCAL_PATCH_COUNT > 0) {
1832 int i;
1833 sv_catpv(opts_prog,
1834 "\" Locally applied patches:\\n\",");
1835 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1836 if (PL_localpatches[i])
1837 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1838 0, PL_localpatches[i], 0);
1839 }
6224f72b 1840 }
6224f72b 1841#endif
7edfd0ef
NC
1842 Perl_sv_catpvf(aTHX_ opts_prog,
1843 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1844#ifdef __DATE__
1845# ifdef __TIME__
7edfd0ef
NC
1846 Perl_sv_catpvf(aTHX_ opts_prog,
1847 ",\" Compiled at %s %s\\n\"",__DATE__,
1848 __TIME__);
6224f72b 1849# else
7edfd0ef
NC
1850 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1851 __DATE__);
6224f72b
GS
1852# endif
1853#endif
7edfd0ef
NC
1854 sv_catpv(opts_prog, "; $\"=\"\\n \"; "
1855 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1856 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1857#ifdef __CYGWIN__
7edfd0ef
NC
1858 sv_catpv(opts_prog,
1859 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1860#endif
7edfd0ef
NC
1861 sv_catpv(opts_prog,
1862 "print \" \\%ENV:\\n @env\\n\" if @env;"
1863 "print \" \\@INC:\\n @INC\\n\";");
1864 }
1865 else {
1866 ++s;
1867 opts_prog = Perl_newSVpvf(aTHX_
1868 "Config::config_vars(qw%c%s%c)",
1869 0, s, 0);
1870 s += strlen(s);
1871 }
1872 av_push(PL_preambleav, opts_prog);
1873 /* don't look for script or read stdin */
1874 scriptname = BIT_BUCKET;
1875 goto reswitch;
6224f72b 1876 }
6224f72b 1877 case 'x':
3280af22 1878 PL_doextract = TRUE;
6224f72b
GS
1879 s++;
1880 if (*s)
f4c556ac 1881 cddir = s;
6224f72b
GS
1882 break;
1883 case 0:
1884 break;
1885 case '-':
1886 if (!*++s || isSPACE(*s)) {
1887 argc--,argv++;
1888 goto switch_end;
1889 }
1890 /* catch use of gnu style long options */
1891 if (strEQ(s, "version")) {
dd374669 1892 s = (char *)"v";
6224f72b
GS
1893 goto reswitch;
1894 }
1895 if (strEQ(s, "help")) {
dd374669 1896 s = (char *)"h";
6224f72b
GS
1897 goto reswitch;
1898 }
1899 s--;
1900 /* FALL THROUGH */
1901 default:
cea2e8a9 1902 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1903 }
1904 }
6224f72b 1905 switch_end:
54310121 1906
f675dbe5
CB
1907 if (
1908#ifndef SECURE_INTERNAL_GETENV
1909 !PL_tainting &&
1910#endif
cf756827 1911 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1912 {
e1ec3a88 1913 const char *popt = s;
74288ac8
GS
1914 while (isSPACE(*s))
1915 s++;
317ea90d 1916 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1917 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1918 PL_tainting = TRUE;
317ea90d
MS
1919 PL_taint_warn = FALSE;
1920 }
74288ac8 1921 else {
cf756827 1922 char *popt_copy = Nullch;
74288ac8 1923 while (s && *s) {
4ea8f8fb 1924 char *d;
74288ac8
GS
1925 while (isSPACE(*s))
1926 s++;
1927 if (*s == '-') {
1928 s++;
1929 if (isSPACE(*s))
1930 continue;
1931 }
4ea8f8fb 1932 d = s;
74288ac8
GS
1933 if (!*s)
1934 break;
06492da6 1935 if (!strchr("DIMUdmtwA", *s))
cea2e8a9 1936 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1937 while (++s && *s) {
1938 if (isSPACE(*s)) {
cf756827
GS
1939 if (!popt_copy) {
1940 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1941 s = popt_copy + (s - popt);
1942 d = popt_copy + (d - popt);
1943 }
4ea8f8fb
MS
1944 *s++ = '\0';
1945 break;
1946 }
1947 }
1c4db469 1948 if (*d == 't') {
317ea90d
MS
1949 if( !PL_tainting ) {
1950 PL_taint_warn = TRUE;
1951 PL_tainting = TRUE;
1952 }
1c4db469
RGS
1953 } else {
1954 moreswitches(d);
1955 }
6224f72b 1956 }
6224f72b
GS
1957 }
1958 }
a0d0e21e 1959
20ef40cf
GA
1960#ifdef USE_SITECUSTOMIZE
1961 if (!minus_f) {
1962 if (!PL_preambleav)
1963 PL_preambleav = newAV();
1964 av_unshift(PL_preambleav, 1);
1965 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1966 }
1967#endif
1968
317ea90d
MS
1969 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1970 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1971 }
1972
6224f72b
GS
1973 if (!scriptname)
1974 scriptname = argv[0];
3280af22 1975 if (PL_e_script) {
6224f72b
GS
1976 argc++,argv--;
1977 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1978 }
1979 else if (scriptname == Nullch) {
1980#ifdef MSDOS
1981 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1982 moreswitches("h");
1983#endif
1984 scriptname = "-";
1985 }
1986
b7975bdd
NC
1987 /* Set $^X early so that it can be used for relocatable paths in @INC */
1988 assert (!PL_tainted);
1989 TAINT;
1990 S_set_caret_X(aTHX);
1991 TAINT_NOT;
6224f72b
GS
1992 init_perllib();
1993
c5cccb17 1994 open_script(scriptname,dosearch,sv);
6224f72b 1995
c5cccb17 1996 validate_suid(validarg, scriptname);
6224f72b 1997
64ca3a65 1998#ifndef PERL_MICRO
0b5b802d
GS
1999#if defined(SIGCHLD) || defined(SIGCLD)
2000 {
2001#ifndef SIGCHLD
2002# define SIGCHLD SIGCLD
2003#endif
2004 Sighandler_t sigstate = rsignal_state(SIGCHLD);
8aad04aa 2005 if (sigstate == (Sighandler_t) SIG_IGN) {
0b5b802d 2006 if (ckWARN(WARN_SIGNAL))
9014280d 2007 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
2008 "Can't ignore signal CHLD, forcing to default");
2009 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2010 }
2011 }
2012#endif
64ca3a65 2013#endif
0b5b802d 2014
bf4acbe4
GS
2015#ifdef MACOS_TRADITIONAL
2016 if (PL_doextract || gMacPerl_AlwaysExtract) {
2017#else
f4c556ac 2018 if (PL_doextract) {
bf4acbe4 2019#endif
6224f72b 2020 find_beginning();
dd374669 2021 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
f4c556ac
GS
2022 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2023
2024 }
6224f72b 2025
3280af22
NIS
2026 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
2027 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2028 CvUNIQUE_on(PL_compcv);
2029
dd2155a4 2030 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 2031#ifdef USE_5005THREADS
533c011a 2032 CvOWNER(PL_compcv) = 0;
a02a5408 2033 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 2034 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 2035#endif /* USE_5005THREADS */
6224f72b 2036
0c4f7ff0 2037 boot_core_PerlIO();
6224f72b 2038 boot_core_UNIVERSAL();
09bef843 2039 boot_core_xsutils();
6224f72b
GS
2040
2041 if (xsinit)
acfe0abc 2042 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2043#ifndef PERL_MICRO
ed79a026 2044#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 2045 init_os_extras();
6224f72b 2046#endif
64ca3a65 2047#endif
6224f72b 2048
29209bc5 2049#ifdef USE_SOCKS
1b9c9cf5
DH
2050# ifdef HAS_SOCKS5_INIT
2051 socks5_init(argv[0]);
2052# else
29209bc5 2053 SOCKSinit(argv[0]);
1b9c9cf5 2054# endif
ac27b0f5 2055#endif
29209bc5 2056
6224f72b
GS
2057 init_predump_symbols();
2058 /* init_postdump_symbols not currently designed to be called */
2059 /* more than once (ENV isn't cleared first, for example) */
2060 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2061 if (!PL_do_undump)
6224f72b
GS
2062 init_postdump_symbols(argc,argv,env);
2063
27da23d5
JH
2064 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2065 * or explicitly in some platforms.
085a54d9 2066 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2067 * look like the user wants to use UTF-8. */
27da23d5
JH
2068#if defined(SYMBIAN)
2069 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2070#endif
06e66572
JH
2071 if (PL_unicode) {
2072 /* Requires init_predump_symbols(). */
a05d7ebb 2073 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2074 IO* io;
2075 PerlIO* fp;
2076 SV* sv;
2077
a05d7ebb 2078 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2079 * and the default open disciplines. */
a05d7ebb
JH
2080 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2081 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2082 (fp = IoIFP(io)))
2083 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2084 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2085 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2086 (fp = IoOFP(io)))
2087 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2088 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2089 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2090 (fp = IoOFP(io)))
2091 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2092 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2093 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
2094 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2095 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2096 if (in) {
2097 if (out)
2098 sv_setpvn(sv, ":utf8\0:utf8", 11);
2099 else
2100 sv_setpvn(sv, ":utf8\0", 6);
2101 }
2102 else if (out)
2103 sv_setpvn(sv, "\0:utf8", 6);
2104 SvSETMAGIC(sv);
2105 }
b310b053
JH
2106 }
2107 }
2108
4ffa73a3
JH
2109 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2110 if (strEQ(s, "unsafe"))
2111 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2112 else if (strEQ(s, "safe"))
2113 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2114 else
2115 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2116 }
2117
6224f72b
GS
2118 init_lexer();
2119
2120 /* now parse the script */
2121
93189314 2122 SETERRNO(0,SS_NORMAL);
3280af22 2123 PL_error_count = 0;
bf4acbe4
GS
2124#ifdef MACOS_TRADITIONAL
2125 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2126 if (PL_minus_c)
2127 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2128 else {
2129 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2130 MacPerl_MPWFileName(PL_origfilename));
2131 }
2132 }
2133#else
3280af22
NIS
2134 if (yyparse() || PL_error_count) {
2135 if (PL_minus_c)
cea2e8a9 2136 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2137 else {
cea2e8a9 2138 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2139 PL_origfilename);
6224f72b
GS
2140 }
2141 }
bf4acbe4 2142#endif
57843af0 2143 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2144 PL_curstash = PL_defstash;
2145 PL_preprocess = FALSE;
2146 if (PL_e_script) {
2147 SvREFCNT_dec(PL_e_script);
2148 PL_e_script = Nullsv;
6224f72b
GS
2149 }
2150
3280af22 2151 if (PL_do_undump)
6224f72b
GS
2152 my_unexec();
2153
57843af0
GS
2154 if (isWARN_ONCE) {
2155 SAVECOPFILE(PL_curcop);
2156 SAVECOPLINE(PL_curcop);
3280af22 2157 gv_check(PL_defstash);
57843af0 2158 }
6224f72b
GS
2159
2160 LEAVE;
2161 FREETMPS;
2162
2163#ifdef MYMALLOC
2164 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2165 dump_mstats("after compilation:");
2166#endif
2167
2168 ENTER;
3280af22 2169 PL_restartop = 0;
312caa8e 2170 return NULL;
6224f72b
GS
2171}
2172
954c1994
GS
2173/*
2174=for apidoc perl_run
2175
2176Tells a Perl interpreter to run. See L<perlembed>.
2177
2178=cut
2179*/
2180
6224f72b 2181int
0cb96387 2182perl_run(pTHXx)
6224f72b 2183{
6224f72b 2184 I32 oldscope;
14dd3ad8 2185 int ret = 0;
db36c5a1 2186 dJMPENV;
6224f72b 2187
9d4ba2ae
AL
2188 PERL_UNUSED_ARG(my_perl);
2189
3280af22 2190 oldscope = PL_scopestack_ix;
96e176bf
CL
2191#ifdef VMS
2192 VMSISH_HUSHED = 0;
2193#endif
6224f72b 2194
14dd3ad8 2195 JMPENV_PUSH(ret);
6224f72b
GS
2196 switch (ret) {
2197 case 1:
2198 cxstack_ix = -1; /* start context stack again */
312caa8e 2199 goto redo_body;
14dd3ad8 2200 case 0: /* normal completion */
14dd3ad8
GS
2201 redo_body:
2202 run_body(oldscope);
14dd3ad8
GS
2203 /* FALL THROUGH */
2204 case 2: /* my_exit() */
3280af22 2205 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2206 LEAVE;
2207 FREETMPS;
3280af22 2208 PL_curstash = PL_defstash;
3a1ee7e8 2209 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2210 PL_endav && !PL_minus_c)
2211 call_list(oldscope, PL_endav);
6224f72b
GS
2212#ifdef MYMALLOC
2213 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2214 dump_mstats("after execution: ");
2215#endif
14dd3ad8
GS
2216 ret = STATUS_NATIVE_EXPORT;
2217 break;
6224f72b 2218 case 3:
312caa8e
CS
2219 if (PL_restartop) {
2220 POPSTACK_TO(PL_mainstack);
2221 goto redo_body;
6224f72b 2222 }
bf49b057 2223 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2224 FREETMPS;
14dd3ad8
GS
2225 ret = 1;
2226 break;
6224f72b
GS
2227 }
2228
14dd3ad8
GS
2229 JMPENV_POP;
2230 return ret;
312caa8e
CS
2231}
2232
14dd3ad8 2233
dd374669 2234STATIC void
14dd3ad8
GS
2235S_run_body(pTHX_ I32 oldscope)
2236{
6224f72b 2237 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2238 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2239
3280af22 2240 if (!PL_restartop) {
6224f72b 2241 DEBUG_x(dump_all());
cf2782cd 2242#ifdef DEBUGGING
ecae49c0
NC
2243 if (!DEBUG_q_TEST)
2244 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2245#endif
b900a521
JH
2246 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2247 PTR2UV(thr)));
6224f72b 2248
3280af22 2249 if (PL_minus_c) {
bf4acbe4 2250#ifdef MACOS_TRADITIONAL
e69a2255
JH
2251 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2252 (gMacPerl_ErrorFormat ? "# " : ""),
2253 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2254#else
bf49b057 2255 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2256#endif
6224f72b
GS
2257 my_exit(0);
2258 }
3280af22 2259 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2260 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2261 if (PL_initav)
2262 call_list(oldscope, PL_initav);
6224f72b
GS
2263 }
2264
2265 /* do it */
2266
3280af22 2267 if (PL_restartop) {
533c011a 2268 PL_op = PL_restartop;
3280af22 2269 PL_restartop = 0;
cea2e8a9 2270 CALLRUNOPS(aTHX);
6224f72b 2271 }
3280af22
NIS
2272 else if (PL_main_start) {
2273 CvDEPTH(PL_main_cv) = 1;
533c011a 2274 PL_op = PL_main_start;
cea2e8a9 2275 CALLRUNOPS(aTHX);
6224f72b 2276 }
f6b3007c
JH
2277 my_exit(0);
2278 /* NOTREACHED */
6224f72b
GS
2279}
2280
954c1994 2281/*
ccfc67b7
JH
2282=head1 SV Manipulation Functions
2283
954c1994
GS
2284=for apidoc p||get_sv
2285
2286Returns the SV of the specified Perl scalar. If C<create> is set and the
2287Perl variable does not exist then it will be created. If C<create> is not
2288set and the variable does not exist then NULL is returned.
2289
2290=cut
2291*/
2292
6224f72b 2293SV*
864dbfa3 2294Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2295{
2296 GV *gv;
4d1ff10f 2297#ifdef USE_5005THREADS
6224f72b
GS
2298 if (name[1] == '\0' && !isALPHA(name[0])) {
2299 PADOFFSET tmp = find_threadsv(name);
411caa50 2300 if (tmp != NOT_IN_PAD)
6224f72b 2301 return THREADSV(tmp);
6224f72b 2302 }
4d1ff10f 2303#endif /* USE_5005THREADS */
6224f72b
GS
2304 gv = gv_fetchpv(name, create, SVt_PV);
2305 if (gv)
2306 return GvSV(gv);
2307 return Nullsv;
2308}
2309
954c1994 2310/*
ccfc67b7
JH
2311=head1 Array Manipulation Functions
2312
954c1994
GS
2313=for apidoc p||get_av
2314
2315Returns the AV of the specified Perl array. If C<create> is set and the
2316Perl variable does not exist then it will be created. If C<create> is not
2317set and the variable does not exist then NULL is returned.
2318
2319=cut
2320*/
2321
6224f72b 2322AV*
864dbfa3 2323Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
2324{
2325 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
2326 if (create)
2327 return GvAVn(gv);
2328 if (gv)
2329 return GvAV(gv);
2330 return Nullav;
2331}
2332
954c1994 2333/*
ccfc67b7
JH
2334=head1 Hash Manipulation Functions
2335
954c1994
GS
2336=for apidoc p||get_hv
2337
2338Returns the HV of the specified Perl hash. If C<create> is set and the
2339Perl variable does not exist then it will be created. If C<create> is not
2340set and the variable does not exist then NULL is returned.
2341
2342=cut
2343*/
2344
6224f72b 2345HV*
864dbfa3 2346Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2347{
890ce7af 2348 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2349 if (create)
2350 return GvHVn(gv);
2351 if (gv)
2352 return GvHV(gv);
2353 return Nullhv;
2354}
2355
954c1994 2356/*
ccfc67b7
JH
2357=head1 CV Manipulation Functions
2358
954c1994
GS
2359=for apidoc p||get_cv
2360
2361Returns the CV of the specified Perl subroutine. If C<create> is set and
2362the Perl subroutine does not exist then it will be declared (which has the
2363same effect as saying C<sub name;>). If C<create> is not set and the
2364subroutine does not exist then NULL is returned.
2365
2366=cut
2367*/
2368
a0d0e21e 2369CV*
864dbfa3 2370Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
2371{
2372 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2373 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2374 /* XXX this is probably not what they think they're getting.
2375 * It has the same effect as "sub name;", i.e. just a forward
2376 * declaration! */
8ebc5c01 2377 if (create && !GvCVu(gv))
774d564b 2378 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2379 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2380 Nullop,
a0d0e21e
LW
2381 Nullop);
2382 if (gv)
8ebc5c01 2383 return GvCVu(gv);
a0d0e21e
LW
2384 return Nullcv;
2385}
2386
79072805
LW
2387/* Be sure to refetch the stack pointer after calling these routines. */
2388
954c1994 2389/*
ccfc67b7
JH
2390
2391=head1 Callback Functions
2392
954c1994
GS
2393=for apidoc p||call_argv
2394
2395Performs a callback to the specified Perl sub. See L<perlcall>.
2396
2397=cut
2398*/
2399
a0d0e21e 2400I32
8f42b153 2401Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2402
8ac85365
NIS
2403 /* See G_* flags in cop.h */
2404 /* null terminated arg list */
8990e307 2405{
a0d0e21e 2406 dSP;
8990e307 2407
924508f0 2408 PUSHMARK(SP);
a0d0e21e 2409 if (argv) {
8990e307 2410 while (*argv) {
a0d0e21e 2411 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2412 argv++;
2413 }
a0d0e21e 2414 PUTBACK;
8990e307 2415 }
864dbfa3 2416 return call_pv(sub_name, flags);
8990e307
LW
2417}
2418
954c1994
GS
2419/*
2420=for apidoc p||call_pv
2421
2422Performs a callback to the specified Perl sub. See L<perlcall>.
2423
2424=cut
2425*/
2426
a0d0e21e 2427I32
864dbfa3 2428Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2429 /* name of the subroutine */
2430 /* See G_* flags in cop.h */
a0d0e21e 2431{
864dbfa3 2432 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2433}
2434
954c1994
GS
2435/*
2436=for apidoc p||call_method
2437
2438Performs a callback to the specified Perl method. The blessed object must
2439be on the stack. See L<perlcall>.
2440
2441=cut
2442*/
2443
a0d0e21e 2444I32
864dbfa3 2445Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2446 /* name of the subroutine */
2447 /* See G_* flags in cop.h */
a0d0e21e 2448{
968b3946 2449 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2450}
2451
2452/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2453/*
2454=for apidoc p||call_sv
2455
2456Performs a callback to the Perl sub whose name is in the SV. See
2457L<perlcall>.
2458
2459=cut
2460*/
2461
a0d0e21e 2462I32
864dbfa3 2463Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2464 /* See G_* flags in cop.h */
a0d0e21e 2465{
27da23d5 2466 dVAR; dSP;
a0d0e21e 2467 LOGOP myop; /* fake syntax tree node */
968b3946 2468 UNOP method_op;
aa689395 2469 I32 oldmark;
13689cfe 2470 volatile I32 retval = 0;
a0d0e21e 2471 I32 oldscope;
54310121 2472 bool oldcatch = CATCH_GET;
6224f72b 2473 int ret;
533c011a 2474 OP* oldop = PL_op;
db36c5a1 2475 dJMPENV;
1e422769 2476
a0d0e21e
LW
2477 if (flags & G_DISCARD) {
2478 ENTER;
2479 SAVETMPS;
2480 }
2481
aa689395 2482 Zero(&myop, 1, LOGOP);
54310121 2483 myop.op_next = Nullop;
f51d4af5 2484 if (!(flags & G_NOARGS))
aa689395 2485 myop.op_flags |= OPf_STACKED;
54310121
PP
2486 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2487 (flags & G_ARRAY) ? OPf_WANT_LIST :
2488 OPf_WANT_SCALAR);
462e5cf6 2489 SAVEOP();
533c011a 2490 PL_op = (OP*)&myop;
aa689395 2491
3280af22
NIS
2492 EXTEND(PL_stack_sp, 1);
2493 *++PL_stack_sp = sv;
aa689395 2494 oldmark = TOPMARK;
3280af22 2495 oldscope = PL_scopestack_ix;
a0d0e21e 2496
3280af22 2497 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2498 /* Handle first BEGIN of -d. */
3280af22 2499 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2500 /* Try harder, since this may have been a sighandler, thus
2501 * curstash may be meaningless. */
3280af22 2502 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2503 && !(flags & G_NODEBUG))
533c011a 2504 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2505
968b3946
GS
2506 if (flags & G_METHOD) {
2507 Zero(&method_op, 1, UNOP);
2508 method_op.op_next = PL_op;
2509 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2510 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2511 PL_op = (OP*)&method_op;
968b3946
GS
2512 }
2513
312caa8e 2514 if (!(flags & G_EVAL)) {
0cdb2077 2515 CATCH_SET(TRUE);
14dd3ad8 2516 call_body((OP*)&myop, FALSE);
312caa8e 2517 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2518 CATCH_SET(oldcatch);
312caa8e
CS
2519 }
2520 else {
d78bda3d 2521 myop.op_other = (OP*)&myop;
3280af22 2522 PL_markstack_ptr--;
4633a7c4
LW
2523 /* we're trying to emulate pp_entertry() here */
2524 {
c09156bb 2525 register PERL_CONTEXT *cx;
f54cb97a 2526 const I32 gimme = GIMME_V;
ac27b0f5 2527
4633a7c4
LW
2528 ENTER;
2529 SAVETMPS;
ac27b0f5 2530
1d76a5c3 2531 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2532 PUSHEVAL(cx, 0, 0);
533c011a 2533 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2534
faef0170 2535 PL_in_eval = EVAL_INEVAL;
4633a7c4 2536 if (flags & G_KEEPERR)
faef0170 2537 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2538 else
c69006e4 2539 sv_setpvn(ERRSV,"",0);
4633a7c4 2540 }
3280af22 2541 PL_markstack_ptr++;
a0d0e21e 2542
14dd3ad8 2543 JMPENV_PUSH(ret);
6224f72b
GS
2544 switch (ret) {
2545 case 0:
14dd3ad8
GS
2546 redo_body:
2547 call_body((OP*)&myop, FALSE);
312caa8e
CS
2548 retval = PL_stack_sp - (PL_stack_base + oldmark);
2549 if (!(flags & G_KEEPERR))
c69006e4 2550 sv_setpvn(ERRSV,"",0);
a0d0e21e 2551 break;
6224f72b 2552 case 1:
f86702cc 2553 STATUS_ALL_FAILURE;
a0d0e21e 2554 /* FALL THROUGH */
6224f72b 2555 case 2:
a0d0e21e 2556 /* my_exit() was called */
3280af22 2557 PL_curstash = PL_defstash;
a0d0e21e 2558 FREETMPS;
14dd3ad8 2559 JMPENV_POP;
cc3604b1 2560 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2561 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2562 my_exit_jump();
a0d0e21e 2563 /* NOTREACHED */
6224f72b 2564 case 3:
3280af22 2565 if (PL_restartop) {
533c011a 2566 PL_op = PL_restartop;
3280af22 2567 PL_restartop = 0;
312caa8e 2568 goto redo_body;
a0d0e21e 2569 }
3280af22 2570 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2571 if (flags & G_ARRAY)
2572 retval = 0;
2573 else {
2574 retval = 1;
3280af22 2575 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2576 }
312caa8e 2577 break;
a0d0e21e 2578 }
a0d0e21e 2579
3280af22 2580 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2581 SV **newsp;
2582 PMOP *newpm;
2583 I32 gimme;
c09156bb 2584 register PERL_CONTEXT *cx;
a0a2876f
LW
2585 I32 optype;
2586
2587 POPBLOCK(cx,newpm);
2588 POPEVAL(cx);
3280af22 2589 PL_curpm = newpm;
a0a2876f 2590 LEAVE;
9d4ba2ae
AL
2591 PERL_UNUSED_VAR(newsp);
2592 PERL_UNUSED_VAR(gimme);
2593 PERL_UNUSED_VAR(optype);
a0d0e21e 2594 }
14dd3ad8 2595 JMPENV_POP;
a0d0e21e 2596 }
1e422769 2597
a0d0e21e 2598 if (flags & G_DISCARD) {
3280af22 2599 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2600 retval = 0;
2601 FREETMPS;
2602 LEAVE;
2603 }
533c011a 2604 PL_op = oldop;
a0d0e21e
LW
2605 return retval;
2606}
2607
312caa8e 2608STATIC void
dd374669 2609S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2610{
312caa8e
CS
2611 if (PL_op == myop) {
2612 if (is_eval)
f807eda9 2613 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2614 else
f807eda9 2615 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2616 }
2617 if (PL_op)
cea2e8a9 2618 CALLRUNOPS(aTHX);
312caa8e
CS
2619}
2620
6e72f9df 2621/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2622
954c1994
GS
2623/*
2624=for apidoc p||eval_sv
2625
2626Tells Perl to C<eval> the string in the SV.
2627
2628=cut
2629*/
2630
a0d0e21e 2631I32
864dbfa3 2632Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2633
8ac85365 2634 /* See G_* flags in cop.h */
a0d0e21e 2635{
924508f0 2636 dSP;
a0d0e21e 2637 UNOP myop; /* fake syntax tree node */
8fa7f367 2638 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2639 volatile I32 retval = 0;
6224f72b 2640 int ret;
533c011a 2641 OP* oldop = PL_op;
db36c5a1 2642 dJMPENV;
84902520 2643
4633a7c4
LW
2644 if (flags & G_DISCARD) {
2645 ENTER;
2646 SAVETMPS;
2647 }
2648
462e5cf6 2649 SAVEOP();
533c011a
NIS
2650 PL_op = (OP*)&myop;
2651 Zero(PL_op, 1, UNOP);
3280af22
NIS
2652 EXTEND(PL_stack_sp, 1);
2653 *++PL_stack_sp = sv;
79072805 2654
4633a7c4
LW
2655 if (!(flags & G_NOARGS))
2656 myop.op_flags = OPf_STACKED;
79072805 2657 myop.op_next = Nullop;
6e72f9df 2658 myop.op_type = OP_ENTEREVAL;
54310121
PP
2659 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2660 (flags & G_ARRAY) ? OPf_WANT_LIST :
2661 OPf_WANT_SCALAR);
6e72f9df
PP
2662 if (flags & G_KEEPERR)
2663 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2664
dedbcade
DM
2665 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2666 * before a PUSHEVAL, which corrupts the stack after a croak */
2667 TAINT_PROPER("eval_sv()");
2668
14dd3ad8 2669 JMPENV_PUSH(ret);
6224f72b
GS
2670 switch (ret) {
2671 case 0:
14dd3ad8
GS
2672 redo_body:
2673 call_body((OP*)&myop,TRUE);
312caa8e
CS
2674 retval = PL_stack_sp - (PL_stack_base + oldmark);
2675 if (!(flags & G_KEEPERR))
c69006e4 2676 sv_setpvn(ERRSV,"",0);
4633a7c4 2677 break;
6224f72b 2678 case 1:
f86702cc 2679 STATUS_ALL_FAILURE;
4633a7c4 2680 /* FALL THROUGH */
6224f72b 2681 case 2:
4633a7c4 2682 /* my_exit() was called */
3280af22 2683 PL_curstash = PL_defstash;
4633a7c4 2684 FREETMPS;
14dd3ad8 2685 JMPENV_POP;
cc3604b1 2686 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2687 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2688 my_exit_jump();
4633a7c4 2689 /* NOTREACHED */
6224f72b 2690 case 3:
3280af22 2691 if (PL_restartop) {
533c011a 2692 PL_op = PL_restartop;
3280af22 2693 PL_restartop = 0;
312caa8e 2694 goto redo_body;
4633a7c4 2695 }
3280af22 2696 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2697 if (flags & G_ARRAY)
2698 retval = 0;
2699 else {
2700 retval = 1;
3280af22 2701 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2702 }
312caa8e 2703 break;
4633a7c4
LW
2704 }
2705
14dd3ad8 2706 JMPENV_POP;
4633a7c4 2707 if (flags & G_DISCARD) {
3280af22 2708 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2709 retval = 0;
2710 FREETMPS;
2711 LEAVE;
2712 }
533c011a 2713 PL_op = oldop;
4633a7c4
LW
2714 return retval;
2715}
2716
954c1994
GS
2717/*
2718=for apidoc p||eval_pv
2719
2720Tells Perl to C<eval> the given string and return an SV* result.
2721
2722=cut
2723*/
2724
137443ea 2725SV*
864dbfa3 2726Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2727{
2728 dSP;
2729 SV* sv = newSVpv(p, 0);
2730
864dbfa3 2731 eval_sv(sv, G_SCALAR);
137443ea
PP
2732 SvREFCNT_dec(sv);
2733
2734 SPAGAIN;
2735 sv = POPs;
2736 PUTBACK;
2737
2d8e6c8d 2738 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2739 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2740 }
137443ea
PP
2741
2742 return sv;
2743}
2744
4633a7c4
LW
2745/* Require a module. */
2746
954c1994 2747/*
ccfc67b7
JH
2748=head1 Embedding Functions
2749
954c1994
GS
2750=for apidoc p||require_pv
2751
7d3fb230
BS
2752Tells Perl to C<require> the file named by the string argument. It is
2753analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2754implemented that way; consider using load_module instead.
954c1994 2755
7d3fb230 2756=cut */
954c1994 2757
4633a7c4 2758void
864dbfa3 2759Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2760{
d3acc0f7
JP
2761 SV* sv;
2762 dSP;
e788e7d3 2763 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2764 PUTBACK;
be41e5d9
NC
2765 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2766 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2767 SPAGAIN;
2768 POPSTACK;
79072805
LW
2769}
2770
79072805 2771void
e1ec3a88 2772Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805
LW
2773{
2774 register GV *gv;
2775
155aba94 2776 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2777 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2778}
2779
76e3520e 2780STATIC void
e1ec3a88 2781S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2782{
ab821d7f 2783 /* This message really ought to be max 23 lines.
75c72d73 2784 * Removed -h because the user already knows that option. Others? */
fb73857a 2785
27da23d5 2786 static const char * const usage_msg[] = {
aefc56c5
SF
2787"-0[octal] specify record separator (\\0, if no argument)",
2788"-A[mod][=pattern] activate all/given assertions",
2789"-a autosplit mode with -n or -p (splits $_ into @F)",
2790"-C[number/list] enables the listed Unicode features",
2791"-c check syntax only (runs BEGIN and CHECK blocks)",
2792"-d[:debugger] run program under debugger",
2793"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2794"-e program one line of program (several -e's allowed, omit programfile)",
aefc56c5 2795"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2796"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2797"-i[extension] edit <> files in place (makes backup if extension supplied)",
2798"-Idirectory specify @INC/#include directory (several -I's allowed)",
2799"-l[octal] enable line ending processing, specifies line terminator",
2800"-[mM][-]module execute \"use/no module...\" before executing program",
2801"-n assume \"while (<>) { ... }\" loop around program",
2802"-p assume loop like -n but print line also, like sed",
2803"-P run program through C preprocessor before compilation",
2804"-s enable rudimentary parsing for switches after programfile",
2805"-S look for programfile using PATH environment variable",
2806"-t enable tainting warnings",
2807"-T enable tainting checks",
2808"-u dump core after parsing program",
2809"-U allow unsafe operations",
2810"-v print version, subversion (includes VERY IMPORTANT perl info)",
2811"-V[:variable] print configuration summary (or a single Config.pm variable)",
2812"-w enable many useful warnings (RECOMMENDED)",
2813"-W enable all warnings",
2814"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2815"-X disable all warnings",
fb73857a
PP
2816"\n",
2817NULL
2818};
27da23d5 2819 const char * const *p = usage_msg;
fb73857a 2820
b0e47665
GS
2821 PerlIO_printf(PerlIO_stdout(),
2822 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2823 name);
fb73857a 2824 while (*p)
b0e47665 2825 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2826}
2827
b4ab917c
DM
2828/* convert a string of -D options (or digits) into an int.
2829 * sets *s to point to the char after the options */
2830
2831#ifdef DEBUGGING
2832int
e1ec3a88 2833Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2834{
27da23d5 2835 static const char * const usage_msgd[] = {
e6e64d9b
JC
2836 " Debugging flag values: (see also -d)",
2837 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2838 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2839 " l Context (loop) stack processing",
2840 " t Trace execution",
2841 " o Method and overloading resolution",
2842 " c String/numeric conversions",
2843 " P Print profiling info, preprocessor command for -P, source file input state",
2844 " m Memory allocation",
2845 " f Format processing",
2846 " r Regular expression parsing and execution",
2847 " x Syntax tree dump",
3679267a 2848 " u Tainting checks",
e6e64d9b
JC
2849 " H Hash dump -- usurps values()",
2850 " X Scratchpad allocation",
2851 " D Cleaning up",
2852 " S Thread synchronization",
2853 " T Tokenising",
2854 " R Include reference counts of dumped variables (eg when using -Ds)",
2855 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2856 " v Verbose: use in conjunction with other flags",
2857 " C Copy On Write",
2858 " A Consistency checks on internal structures",
3679267a 2859 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2860 NULL
2861 };
b4ab917c
DM
2862 int i = 0;
2863 if (isALPHA(**s)) {
2864 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2865 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2866
2867 for (; isALNUM(**s); (*s)++) {
e1ec3a88 2868 const char *d = strchr(debopts,**s);
b4ab917c
DM
2869 if (d)
2870 i |= 1 << (d - debopts);
2871 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2872 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2873 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2874 }
2875 }
e6e64d9b 2876 else if (isDIGIT(**s)) {
b4ab917c
DM
2877 i = atoi(*s);
2878 for (; isALNUM(**s); (*s)++) ;
2879 }
ddcf8bc1 2880 else if (givehelp) {
aadb217d 2881 char **p = (char **)usage_msgd;
e6e64d9b
JC
2882 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2883 }
b4ab917c
DM
2884# ifdef EBCDIC
2885 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2886 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2887 "-Dp not implemented on this platform\n");
2888# endif
2889 return i;
2890}
2891#endif
2892
79072805
LW
2893/* This routine handles any switches that can be given during run */
2894
2895char *
864dbfa3 2896Perl_moreswitches(pTHX_ char *s)
79072805 2897{
27da23d5 2898 dVAR;
84c133a0 2899 UV rschar;
79072805
LW
2900
2901 switch (*s) {
2902 case '0':
a863c7d1 2903 {
f2095865 2904 I32 flags = 0;
a3b680e6 2905 STRLEN numlen;
f2095865
JH
2906
2907 SvREFCNT_dec(PL_rs);
2908 if (s[1] == 'x' && s[2]) {
a3b680e6 2909 const char *e = s+=2;
f2095865
JH
2910 U8 *tmps;
2911
a3b680e6
AL
2912 while (*e)
2913 e++;
f2095865
JH
2914 numlen = e - s;
2915 flags = PERL_SCAN_SILENT_ILLDIGIT;
2916 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2917 if (s + numlen < e) {
2918 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2919 numlen = 0;
2920 s--;
2921 }
2922 PL_rs = newSVpvn("", 0);
c5661c80 2923 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2924 tmps = (U8*)SvPVX(PL_rs);
2925 uvchr_to_utf8(tmps, rschar);
2926 SvCUR_set(PL_rs, UNISKIP(rschar));
2927 SvUTF8_on(PL_rs);
2928 }
2929 else {
2930 numlen = 4;
2931 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2932 if (rschar & ~((U8)~0))
2933 PL_rs = &PL_sv_undef;
2934 else if (!rschar && numlen >= 2)
2935 PL_rs = newSVpvn("", 0);
2936 else {
2937 char ch = (char)rschar;
2938 PL_rs = newSVpvn(&ch, 1);
2939 }
2940 }
800633c3 2941 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2942 return s + numlen;
a863c7d1 2943 }
46487f74 2944 case 'C':
a05d7ebb 2945 s++;
dd374669 2946 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2947 return s;
2304df62 2948 case 'F':
3280af22 2949 PL_minus_F = TRUE;
ebce5377
RGS
2950 PL_splitstr = ++s;
2951 while (*s && !isSPACE(*s)) ++s;
2952 *s = '\0';
2953 PL_splitstr = savepv(PL_splitstr);
2304df62 2954 return s;
79072805 2955 case 'a':
3280af22 2956 PL_minus_a = TRUE;
79072805
LW
2957 s++;
2958 return s;
2959 case 'c':
3280af22 2960 PL_minus_c = TRUE;
79072805
LW
2961 s++;
2962 return s;
2963 case 'd':
bbce6d69 2964 forbid_setid("-d");
4633a7c4 2965 s++;
2cbb2ee1
RGS
2966
2967 /* -dt indicates to the debugger that threads will be used */
2968 if (*s == 't' && !isALNUM(s[1])) {
2969 ++s;
2970 my_setenv("PERL5DB_THREADED", "1");
2971 }
2972
70c94a19
RR
2973 /* The following permits -d:Mod to accepts arguments following an =
2974 in the fashion that -MSome::Mod does. */
2975 if (*s == ':' || *s == '=') {
06b5626a 2976 const char *start;
70c94a19
RR
2977 SV *sv;
2978 sv = newSVpv("use Devel::", 0);
2979 start = ++s;
2980 /* We now allow -d:Module=Foo,Bar */
2981 while(isALNUM(*s) || *s==':') ++s;
2982 if (*s != '=')
2983 sv_catpv(sv, start);
2984 else {
2985 sv_catpvn(sv, start, s-start);
0c5a913d 2986 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 2987 }
4633a7c4 2988 s += strlen(s);
184f32ec 2989 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 2990 }
ed094faf 2991 if (!PL_perldb) {
3280af22 2992 PL_perldb = PERLDB_ALL;
a0d0e21e 2993 init_debugger();
ed094faf 2994 }
79072805
LW
2995 return s;
2996 case 'D':
0453d815 2997 {
79072805 2998#ifdef DEBUGGING
bbce6d69 2999 forbid_setid("-D");
b4ab917c 3000 s++;
dd374669 3001 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3002#else /* !DEBUGGING */
0453d815 3003 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3004 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3005 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3006 for (s++; isALNUM(*s); s++) ;
79072805 3007#endif
79072805 3008 return s;
0453d815 3009 }
4633a7c4 3010 case 'h':
ac27b0f5 3011 usage(PL_origargv[0]);
7ca617d0 3012 my_exit(0);
79072805 3013 case 'i':
43c5f42d 3014 Safefree(PL_inplace);
c030f24b
GH
3015#if defined(__CYGWIN__) /* do backup extension automagically */
3016 if (*(s+1) == '\0') {
3017 PL_inplace = savepv(".bak");
3018 return s+1;
3019 }
3020#endif /* __CYGWIN__ */
3280af22 3021 PL_inplace = savepv(s+1);
a6e20a40
AL
3022 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3023 ;
7b8d334a 3024 if (*s) {
fb73857a 3025 *s++ = '\0';
7b8d334a
GS
3026 if (*s == '-') /* Additional switches on #! line. */
3027 s++;
3028 }
fb73857a 3029 return s;
4e49a025 3030 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 3031 forbid_setid("-I");
fb73857a
PP
3032 ++s;
3033 while (*s && isSPACE(*s))
3034 ++s;
3035 if (*s) {
774d564b 3036 char *e, *p;
0df16ed7
GS
3037 p = s;
3038 /* ignore trailing spaces (possibly followed by other switches) */
3039 do {
3040 for (e = p; *e && !isSPACE(*e); e++) ;
3041 p = e;
3042 while (isSPACE(*p))
3043 p++;
3044 } while (*p && *p != '-');
3045 e = savepvn(s, e-s);
88fe16b2 3046 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3047 Safefree(e);
3048 s = p;
3049 if (*s == '-')
3050 s++;
79072805
LW
3051 }
3052 else
a67e862a 3053 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3054 return s;
79072805 3055 case 'l':
3280af22 3056 PL_minus_l = TRUE;
79072805 3057 s++;
7889fe52
NIS
3058 if (PL_ors_sv) {
3059 SvREFCNT_dec(PL_ors_sv);
3060 PL_ors_sv = Nullsv;
3061 }
79072805 3062 if (isDIGIT(*s)) {
53305cf1 3063 I32 flags = 0;
a3b680e6 3064 STRLEN numlen;
7889fe52 3065 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
3066 numlen = 3 + (*s == '0');
3067 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3068 s += numlen;
3069 }
3070 else {
8bfdd7d9 3071 if (RsPARA(PL_rs)) {
7889fe52
NIS
3072 PL_ors_sv = newSVpvn("\n\n",2);
3073 }
3074 else {
8bfdd7d9 3075 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3076 }
79072805
LW
3077 }
3078 return s;
06492da6
SF
3079 case 'A':
3080 forbid_setid("-A");
930366bd
RGS
3081 if (!PL_preambleav)
3082 PL_preambleav = newAV();
aefc56c5
SF
3083 s++;
3084 {
3085 char *start = s;
3086 SV *sv = newSVpv("use assertions::activate", 24);
3087 while(isALNUM(*s) || *s == ':') ++s;
3088 if (s != start) {
3089 sv_catpvn(sv, "::", 2);
3090 sv_catpvn(sv, start, s-start);
3091 }
3092 if (*s == '=') {
0c5a913d 3093 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3094 s+=strlen(s);
3095 }
3096 else if (*s != '\0') {
3097 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, s-start, start);
3098 }
06492da6 3099 av_push(PL_preambleav, sv);
aefc56c5 3100 return s;
06492da6 3101 }
1a30305b 3102 case 'M':
bbce6d69 3103 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3104 /* FALL THROUGH */
3105 case 'm':
bbce6d69 3106 forbid_setid("-m"); /* XXX ? */
1a30305b 3107 if (*++s) {
a5f75d66 3108 char *start;
11343788 3109 SV *sv;
e1ec3a88 3110 const char *use = "use ";
a5f75d66 3111 /* -M-foo == 'no foo' */
d0043bd1
NC
3112 /* Leading space on " no " is deliberate, to make both
3113 possibilities the same length. */
3114 if (*s == '-') { use = " no "; ++s; }
3115 sv = newSVpvn(use,4);
a5f75d66 3116 start = s;
1a30305b 3117 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3118 while(isALNUM(*s) || *s==':') ++s;
3119 if (*s != '=') {
11343788 3120 sv_catpv(sv, start);
c07a80fd
PP
3121 if (*(start-1) == 'm') {
3122 if (*s != '\0')
cea2e8a9 3123 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 3124 sv_catpv( sv, " ()");
c07a80fd
PP
3125 }
3126 } else {
6df41af2 3127 if (s == start)
be98fb35
GS
3128 Perl_croak(aTHX_ "Module name required with -%c option",
3129 s[-1]);
11343788 3130 sv_catpvn(sv, start, s-start);
3d27e215
LM
3131 sv_catpv(sv, " split(/,/,q");
3132 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
11343788 3133 sv_catpv(sv, ++s);
3d27e215 3134 sv_catpvn(sv, "\0)", 2);
c07a80fd 3135 }
1a30305b 3136 s += strlen(s);
5c831c24 3137 if (!PL_preambleav)
3280af22
NIS
3138 PL_preambleav = newAV();
3139 av_push(PL_preambleav, sv);
1a30305b
PP
3140 }
3141 else
9e81e6a1 3142 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3143 return s;
79072805 3144 case 'n':
3280af22 3145 PL_minus_n = TRUE;
79072805
LW
3146 s++;
3147 return s;
3148 case 'p':
3280af22 3149 PL_minus_p = TRUE;
79072805
LW
3150 s++;
3151 return s;
3152 case 's':
bbce6d69 3153 forbid_setid("-s");
3280af22 3154 PL_doswitches = TRUE;
79072805
LW
3155 s++;
3156 return s;
6537fe72
MS
3157 case 't':
3158 if (!PL_tainting)
22f7c9c9 3159 TOO_LATE_FOR('t');
6537fe72
MS
3160 s++;
3161 return s;
463ee0b2 3162 case 'T':
3280af22 3163 if (!PL_tainting)
22f7c9c9 3164 TOO_LATE_FOR('T');
463ee0b2
LW
3165 s++;
3166 return s;
79072805 3167 case 'u':
bf4acbe4
GS
3168#ifdef MACOS_TRADITIONAL
3169 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3170#endif
3280af22 3171 PL_do_undump = TRUE;
79072805
LW
3172 s++;
3173 return s;
3174 case 'U':
3280af22 3175 PL_unsafe = TRUE;
79072805
LW
3176 s++;
3177 return s;
3178 case 'v':
d7aa5382
JP
3179 if (!sv_derived_from(PL_patchlevel, "version"))
3180 (void *)upg_version(PL_patchlevel);
8e9464f1 3181#if !defined(DGUX)
b0e47665 3182 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3183 Perl_form(aTHX_ "\nThis is perl, %"SVf" built for %s",
d7aa5382
JP
3184 vstringify(PL_patchlevel),
3185 ARCHNAME));
8e9464f1
JH
3186#else /* DGUX */
3187/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3188 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3189 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3190 vstringify(PL_patchlevel)));
8e9464f1
JH
3191 PerlIO_printf(PerlIO_stdout(),
3192 Perl_form(aTHX_ " built under %s at %s %s\n",
3193 OSNAME, __DATE__, __TIME__));
3194 PerlIO_printf(PerlIO_stdout(),
3195 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3196 OSVERS));
8e9464f1
JH
3197#endif /* !DGUX */
3198
fb73857a
PP
3199#if defined(LOCAL_PATCH_COUNT)
3200 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3201 PerlIO_printf(PerlIO_stdout(),
3202 "\n(with %d registered patch%s, "
3203 "see perl -V for more detail)",
3204 (int)LOCAL_PATCH_COUNT,
3205 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3206#endif
1a30305b 3207
b0e47665 3208 PerlIO_printf(PerlIO_stdout(),
359b00fe 3209 "\n\nCopyright 1987-2005, Larry Wall\n");
eae9c151
JH
3210#ifdef MACOS_TRADITIONAL
3211 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3212 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3213 "maintained by Chris Nandor\n");
eae9c151 3214#endif
79072805 3215#ifdef MSDOS
b0e47665
GS
3216 PerlIO_printf(PerlIO_stdout(),
3217 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3218#endif
3219#ifdef DJGPP
b0e47665
GS
3220 PerlIO_printf(PerlIO_stdout(),
3221 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3222 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3223#endif
79072805 3224#ifdef OS2
b0e47665
GS
3225 PerlIO_printf(PerlIO_stdout(),
3226 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3227 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3228#endif
79072805 3229#ifdef atarist
b0e47665
GS
3230 PerlIO_printf(PerlIO_stdout(),
3231 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3232#endif
a3f9223b 3233#ifdef __BEOS__
b0e47665
GS
3234 PerlIO_printf(PerlIO_stdout(),
3235 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3236#endif
1d84e8df 3237#ifdef MPE
b0e47665 3238 PerlIO_printf(PerlIO_stdout(),
e583a879 3239 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3240#endif
9d116dd7 3241#ifdef OEMVS
b0e47665
GS
3242 PerlIO_printf(PerlIO_stdout(),
3243 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3244#endif
495c5fdc 3245#ifdef __VOS__
b0e47665 3246 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3247 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3248#endif
092bebab 3249#ifdef __OPEN_VM
b0e47665
GS
3250 PerlIO_printf(PerlIO_stdout(),
3251 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3252#endif
a1a0e61e 3253#ifdef POSIX_BC
b0e47665
GS
3254 PerlIO_printf(PerlIO_stdout(),
3255 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3256#endif
61ae2fbf 3257#ifdef __MINT__
b0e47665
GS
3258 PerlIO_printf(PerlIO_stdout(),
3259 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3260#endif
f83d2536 3261#ifdef EPOC
b0e47665 3262 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3263 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3264#endif
e1caacb4 3265#ifdef UNDER_CE
b475b3e6
JH
3266 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3267 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3268 wce_hitreturn();
3269#endif
27da23d5
JH
3270#ifdef SYMBIAN
3271 PerlIO_printf(PerlIO_stdout(),
3272 "Symbian port by Nokia, 2004-2005\n");
3273#endif
baed7233
DL
3274#ifdef BINARY_BUILD_NOTICE
3275 BINARY_BUILD_NOTICE;
3276#endif
b0e47665
GS
3277 PerlIO_printf(PerlIO_stdout(),
3278 "\n\
79072805 3279Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3280GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3281Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3282this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3283Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3284 my_exit(0);
79072805 3285 case 'w':
599cee73 3286 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3287 PL_dowarn |= G_WARN_ON;
599cee73
PM
3288 s++;
3289 return s;
3290 case 'W':
ac27b0f5 3291 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3292 if (!specialWARN(PL_compiling.cop_warnings))
3293 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3294 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3295 s++;
3296 return s;
3297 case 'X':
ac27b0f5 3298 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3299 if (!specialWARN(PL_compiling.cop_warnings))
3300 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3301 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3302 s++;
3303 return s;
a0d0e21e 3304 case '*':
79072805
LW
3305 case ' ':
3306 if (s[1] == '-') /* Additional switches on #! line. */
3307 return s+2;
3308 break;
a0d0e21e 3309 case '-':
79072805 3310 case 0:
51882d45 3311#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3312 case '\r':
3313#endif
79072805
LW
3314 case '\n':
3315 case '\t':
3316 break;
aa689395
PP
3317#ifdef ALTERNATE_SHEBANG
3318 case 'S': /* OS/2 needs -S on "extproc" line. */
3319 break;
3320#endif
a0d0e21e 3321 case 'P':
3280af22 3322 if (PL_preprocess)
a0d0e21e
LW
3323 return s+1;
3324 /* FALL THROUGH */
79072805 3325 default:
cea2e8a9 3326 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
3327 }
3328 return Nullch;
3329}
3330
3331/* compliments of Tom Christiansen */
3332
3333/* unexec() can be found in the Gnu emacs distribution */
ee580363 3334/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3335
3336void
864dbfa3 3337Perl_my_unexec(pTHX)
79072805
LW
3338{
3339#ifdef UNEXEC
46fc3d4c
PP
3340 SV* prog;
3341 SV* file;
ee580363 3342 int status = 1;
79072805
LW
3343 extern int etext;
3344
ee580363 3345 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 3346 sv_catpv(prog, "/perl");
6b88bc9c 3347 file = newSVpv(PL_origfilename, 0);
46fc3d4c 3348 sv_catpv(file, ".perldump");
79072805 3349
ee580363
GS
3350 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3351 /* unexec prints msg to stderr in case of failure */
6ad3d225 3352 PerlProc_exit(status);
79072805 3353#else
a5f75d66
AD
3354# ifdef VMS
3355# include <lib$routines.h>
3356 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 3357# else
79072805 3358 ABORT(); /* for use with undump */
aa689395 3359# endif
a5f75d66 3360#endif
79072805
LW
3361}
3362
cb68f92d
GS
3363/* initialize curinterp */
3364STATIC void
cea2e8a9 3365S_init_interp(pTHX)
cb68f92d
GS
3366{
3367
acfe0abc
GS
3368#ifdef MULTIPLICITY
3369# define PERLVAR(var,type)
3370# define PERLVARA(var,n,type)
3371# if defined(PERL_IMPLICIT_CONTEXT)
3372# if defined(USE_5005THREADS)
3373# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3374# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3375# else /* !USE_5005THREADS */
3376# define PERLVARI(var,type,init) aTHX->var = init;
3377# define PERLVARIC(var,type,init) aTHX->var = init;
3378# endif /* USE_5005THREADS */
3967c732 3379# else
acfe0abc
GS
3380# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3381# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3382# endif
acfe0abc
GS
3383# include "intrpvar.h"
3384# ifndef USE_5005THREADS
3385# include "thrdvar.h"
3386# endif
3387# undef PERLVAR
3388# undef PERLVARA
3389# undef PERLVARI
3390# undef PERLVARIC
3391#else
3392# define PERLVAR(var,type)
3393# define PERLVARA(var,n,type)
3394# define PERLVARI(var,type,init) PL_##var = init;
3395# define PERLVARIC(var,type,init) PL_##var = init;
3396# include "intrpvar.h"
3397# ifndef USE_5005THREADS
3398# include "thrdvar.h"
3399# endif
3400# undef PERLVAR
3401# undef PERLVARA
3402# undef PERLVARI
3403# undef PERLVARIC
cb68f92d
GS
3404#endif
3405
cb68f92d
GS
3406}
3407
76e3520e 3408STATIC void
cea2e8a9 3409S_init_main_stash(pTHX)
79072805 3410{
463ee0b2 3411 GV *gv;
6e72f9df 3412
3280af22 3413 PL_curstash = PL_defstash = newHV();
79cb57f6 3414 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
3415 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
3416 SvREFCNT_dec(GvHV(gv));
3280af22 3417 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3418 SvREADONLY_on(gv);
51a37f80 3419 hv_name_set(PL_defstash, "main", 4, 0);
3280af22
NIS
3420 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
3421 GvMULTI_on(PL_incgv);
3422 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3423 GvMULTI_on(PL_hintgv);
3424 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
3425 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
3426 GvMULTI_on(PL_errgv);
3427 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3428 GvMULTI_on(PL_replgv);
cea2e8a9 3429 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3430#ifdef PERL_DONT_CREATE_GVSV
3431 gv_SVadd(PL_errgv);
3432#endif
38a03e6e
MB
3433 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3434 sv_setpvn(ERRSV, "", 0);
3280af22 3435 PL_curstash = PL_defstash;
11faa288 3436 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 3437 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 3438 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 3439 /* We must init $/ before switches are processed. */
864dbfa3 3440 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3441}
3442
ae3f3efd 3443/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3444STATIC void
dd374669 3445S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3446{
ae3f3efd 3447#ifndef IAMSUID
e1ec3a88
AL
3448 const char *quote;
3449 const char *code;
3450 const char *cpp_discard_flag;
3451 const char *perl;
ae3f3efd 3452#endif
27da23d5 3453 dVAR;
1b24ed4b 3454
ae3f3efd
PS
3455 PL_fdscript = -1;
3456 PL_suidscript = -1;
79072805 3457
3280af22 3458 if (PL_e_script) {
ff5bdd37 3459 PL_origfilename = savepvn("-e", 2);
96436eeb 3460 }
6c4ab083
GS
3461 else {
3462 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3463 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
3464
3465 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
e1ec3a88 3466 const char *s = scriptname + 8;
ae3f3efd 3467 PL_fdscript = atoi(s);
6c4ab083
GS
3468 while (isDIGIT(*s))
3469 s++;
3470 if (*s) {
ae3f3efd
PS
3471 /* PSz 18 Feb 04
3472 * Tell apart "normal" usage of fdscript, e.g.
3473 * with bash on FreeBSD:
3474 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3475 * from usage in suidperl.
3476 * Does any "normal" usage leave garbage after the number???
3477 * Is it a mistake to use a similar /dev/fd/ construct for
3478 * suidperl?
3479 */
3480 PL_suidscript = 1;
3481 /* PSz 20 Feb 04
3482 * Be supersafe and do some sanity-checks.
3483 * Still, can we be sure we got the right thing?
3484 */
3485 if (*s != '/') {
3486 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3487 }
3488 if (! *(s+1)) {
3489 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3490 }
6c4ab083 3491 scriptname = savepv(s + 1);
3280af22 3492 Safefree(PL_origfilename);
dd374669 3493 PL_origfilename = (char *)scriptname;
6c4ab083
GS
3494 }
3495 }
3496 }
3497
05ec9bb3 3498 CopFILE_free(PL_curcop);
57843af0 3499 CopFILE_set(PL_curcop, PL_origfilename);
770526c1 3500 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
dd374669 3501 scriptname = (char *)"";
ae3f3efd
PS
3502 if (PL_fdscript >= 0) {
3503 PL_rsfp = PerlIO_fdopen(PL_fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS
3504# if defined(HAS_FCNTL) && defined(F_SETFD)
3505 if (PL_rsfp)
3506 /* ensure close-on-exec */
3507 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3508# endif
96436eeb 3509 }
ae3f3efd
PS
3510#ifdef IAMSUID
3511 else {
86207487
NC
3512 Perl_croak(aTHX_ "sperl needs fd script\n"
3513 "You should not call sperl directly; do you need to "
3514 "change a #! line\nfrom sperl to perl?\n");
3515
ae3f3efd
PS
3516/* PSz 11 Nov 03
3517 * Do not open (or do other fancy stuff) while setuid.
3518 * Perl does the open, and hands script to suidperl on a fd;
3519 * suidperl only does some checks, sets up UIDs and re-execs
3520 * perl with that fd as it has always done.
3521 */
3522 }
3523 if (PL_suidscript != 1) {
3524 Perl_croak(aTHX_ "suidperl needs (suid) fd script\n");
3525 }
3526#else /* IAMSUID */
3280af22 3527 else if (PL_preprocess) {
dd374669 3528 const char *cpp_cfg = CPPSTDIN;
79cb57f6 3529 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
3530 SV *cmd = NEWSV(0,0);
3531
ae58f265
JH
3532 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
3533 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
46fc3d4c 3534 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 3535 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 3536 sv_catpv(cpp, cpp_cfg);
79072805 3537
1b24ed4b
MS
3538# ifndef VMS
3539 sv_catpvn(sv, "-I", 2);
3540 sv_catpv(sv,PRIVLIB_EXP);
3541# endif
46fc3d4c 3542
14953ddc
MB
3543 DEBUG_P(PerlIO_printf(Perl_debug_log,
3544 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
848ef955
NC
3545 scriptname, SvPVX_const (cpp), SvPVX_const (sv),
3546 CPPMINUS));
1b24ed4b
MS
3547
3548# if defined(MSDOS) || defined(WIN32) || defined(VMS)
3549 quote = "\"";
3550# else
3551 quote = "'";
3552# endif
3553
3554# ifdef VMS
3555 cpp_discard_flag = "";
3556# else
3557 cpp_discard_flag = "-C";
3558# endif
3559
3560# ifdef OS2
3561 perl = os2_execname(aTHX);
3562# else
3563 perl = PL_origargv[0];
3564# endif
3565
3566
3567 /* This strips off Perl comments which might interfere with
62375a60
NIS
3568 the C pre-proces