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Re: [perl #25157] [PATCH] Text-Balanced extract_quotelike fails on certain delims...
[perl5.git] / perl.c
CommitLineData
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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
011f1a1a
JH
85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
NC
95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
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NC
108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
e6827a76
NC
144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
NC
147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
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
GS
185
186/*
ccfc67b7
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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
GS
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);
0309f36e
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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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NIS
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
cea2e8a9 261 PL_sighandlerp = Perl_sighandler;
3280af22 262 PL_pidstatus = newHV();
79072805
LW
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
GS
282#ifdef HAVE_INTERP_INTERN
283 sys_intern_init();
284#endif
285
3a1ee7e8 286 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 287
3280af22
NIS
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. */
1f483ca1
JH
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
13137afc
AB
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
AB
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
3d47000e
AB
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
JH
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
LW
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
GS
1688 char *p;
1689 STRLEN len = strlen(s);
1690 p = savepvn(s, len);
88fe16b2 1691 incpush(p, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
1692 sv_catpvn(sv, "-I", 2);
1693 sv_catpvn(sv, p, len);
1694 sv_catpvn(sv, " ", 1);
6224f72b 1695 Safefree(p);
0df16ed7
GS
1696 }
1697 else
a67e862a 1698 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1699 break;
1700 case 'P':
1701 forbid_setid("-P");
3280af22 1702 PL_preprocess = TRUE;
6224f72b
GS
1703 s++;
1704 goto reswitch;
1705 case 'S':
1706 forbid_setid("-S");
1707 dosearch = TRUE;
1708 s++;
1709 goto reswitch;
1710 case 'V':
7edfd0ef
NC
1711 {
1712 SV *opts_prog;
1713
1714 if (!PL_preambleav)
1715 PL_preambleav = newAV();
1716 av_push(PL_preambleav,
1717 newSVpv("use Config;",0));
1718 if (*++s != ':') {
1719 STRLEN opts;
1720
1721 opts_prog = newSVpv("print Config::myconfig(),",0);
6224f72b 1722#ifdef VMS
7edfd0ef 1723 sv_catpv(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1724#else
7edfd0ef 1725 sv_catpv(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1726#endif
7edfd0ef 1727 opts = SvCUR(opts_prog);
efcaa95b 1728
7edfd0ef 1729 sv_catpv(opts_prog,"\" Compile-time options:");
6224f72b 1730# ifdef DEBUGGING
7edfd0ef 1731 sv_catpv(opts_prog," DEBUGGING");
6224f72b 1732# endif
6224f72b 1733# ifdef MULTIPLICITY
7edfd0ef 1734 sv_catpv(opts_prog," MULTIPLICITY");
6224f72b 1735# endif
4d1ff10f 1736# ifdef USE_5005THREADS
7edfd0ef 1737 sv_catpv(opts_prog," USE_5005THREADS");
b363f7ed 1738# endif
ac5e8965 1739# ifdef USE_ITHREADS
7edfd0ef 1740 sv_catpv(opts_prog," USE_ITHREADS");
ac5e8965 1741# endif
10cc9d2a 1742# ifdef USE_64_BIT_INT
7edfd0ef 1743 sv_catpv(opts_prog," USE_64_BIT_INT");
10cc9d2a
JH
1744# endif
1745# ifdef USE_64_BIT_ALL
7edfd0ef 1746 sv_catpv(opts_prog," USE_64_BIT_ALL");
ac5e8965
JH
1747# endif
1748# ifdef USE_LONG_DOUBLE
7edfd0ef 1749 sv_catpv(opts_prog," USE_LONG_DOUBLE");
ac5e8965 1750# endif
53430762 1751# ifdef USE_LARGE_FILES
7edfd0ef 1752 sv_catpv(opts_prog," USE_LARGE_FILES");
53430762 1753# endif
ac5e8965 1754# ifdef USE_SOCKS
7edfd0ef 1755 sv_catpv(opts_prog," USE_SOCKS");
ac5e8965 1756# endif
20ef40cf 1757# ifdef USE_SITECUSTOMIZE
7edfd0ef 1758 sv_catpv(opts_prog," USE_SITECUSTOMIZE");
20ef40cf 1759# endif
b363f7ed 1760# ifdef PERL_IMPLICIT_CONTEXT
7edfd0ef 1761 sv_catpv(opts_prog," PERL_IMPLICIT_CONTEXT");
b363f7ed
GS
1762# endif
1763# ifdef PERL_IMPLICIT_SYS
7edfd0ef 1764 sv_catpv(opts_prog," PERL_IMPLICIT_SYS");
b363f7ed 1765# endif
efcaa95b 1766
7edfd0ef
NC
1767 while (SvCUR(opts_prog) > opts+76) {
1768 /* find last space after "options: " and before col 76
1769 */
efcaa95b 1770
7edfd0ef
NC
1771 const char *space;
1772 char *pv = SvPV_nolen(opts_prog);
1773 const char c = pv[opts+76];
1774 pv[opts+76] = '\0';
1775 space = strrchr(pv+opts+26, ' ');
1776 pv[opts+76] = c;
1777 if (!space) break; /* "Can't happen" */
efcaa95b 1778
7edfd0ef 1779 /* break the line before that space */
efcaa95b 1780
7edfd0ef
NC
1781 opts = space - pv;
1782 sv_insert(opts_prog, opts, 0,
1783 "\\n ", 25);
1784 }
efcaa95b 1785
7edfd0ef 1786 sv_catpv(opts_prog,"\\n\",");
b363f7ed 1787
6224f72b 1788#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1789 if (LOCAL_PATCH_COUNT > 0) {
1790 int i;
1791 sv_catpv(opts_prog,
1792 "\" Locally applied patches:\\n\",");
1793 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1794 if (PL_localpatches[i])
1795 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1796 0, PL_localpatches[i], 0);
1797 }
6224f72b 1798 }
6224f72b 1799#endif
7edfd0ef
NC
1800 Perl_sv_catpvf(aTHX_ opts_prog,
1801 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1802#ifdef __DATE__
1803# ifdef __TIME__
7edfd0ef
NC
1804 Perl_sv_catpvf(aTHX_ opts_prog,
1805 ",\" Compiled at %s %s\\n\"",__DATE__,
1806 __TIME__);
6224f72b 1807# else
7edfd0ef
NC
1808 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1809 __DATE__);
6224f72b
GS
1810# endif
1811#endif
7edfd0ef
NC
1812 sv_catpv(opts_prog, "; $\"=\"\\n \"; "
1813 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1814 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1815#ifdef __CYGWIN__
7edfd0ef
NC
1816 sv_catpv(opts_prog,
1817 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1818#endif
7edfd0ef
NC
1819 sv_catpv(opts_prog,
1820 "print \" \\%ENV:\\n @env\\n\" if @env;"
1821 "print \" \\@INC:\\n @INC\\n\";");
1822 }
1823 else {
1824 ++s;
1825 opts_prog = Perl_newSVpvf(aTHX_
1826 "Config::config_vars(qw%c%s%c)",
1827 0, s, 0);
1828 s += strlen(s);
1829 }
1830 av_push(PL_preambleav, opts_prog);
1831 /* don't look for script or read stdin */
1832 scriptname = BIT_BUCKET;
1833 goto reswitch;
6224f72b 1834 }
6224f72b 1835 case 'x':
3280af22 1836 PL_doextract = TRUE;
6224f72b
GS
1837 s++;
1838 if (*s)
f4c556ac 1839 cddir = s;
6224f72b
GS
1840 break;
1841 case 0:
1842 break;
1843 case '-':
1844 if (!*++s || isSPACE(*s)) {
1845 argc--,argv++;
1846 goto switch_end;
1847 }
1848 /* catch use of gnu style long options */
1849 if (strEQ(s, "version")) {
dd374669 1850 s = (char *)"v";
6224f72b
GS
1851 goto reswitch;
1852 }
1853 if (strEQ(s, "help")) {
dd374669 1854 s = (char *)"h";
6224f72b
GS
1855 goto reswitch;
1856 }
1857 s--;
1858 /* FALL THROUGH */
1859 default:
cea2e8a9 1860 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1861 }
1862 }
6224f72b 1863 switch_end:
54310121 1864
f675dbe5
CB
1865 if (
1866#ifndef SECURE_INTERNAL_GETENV
1867 !PL_tainting &&
1868#endif
cf756827 1869 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1870 {
e1ec3a88 1871 const char *popt = s;
74288ac8
GS
1872 while (isSPACE(*s))
1873 s++;
317ea90d 1874 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1875 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1876 PL_tainting = TRUE;
317ea90d
MS
1877 PL_taint_warn = FALSE;
1878 }
74288ac8 1879 else {
cf756827 1880 char *popt_copy = Nullch;
74288ac8 1881 while (s && *s) {
4ea8f8fb 1882 char *d;
74288ac8
GS
1883 while (isSPACE(*s))
1884 s++;
1885 if (*s == '-') {
1886 s++;
1887 if (isSPACE(*s))
1888 continue;
1889 }
4ea8f8fb 1890 d = s;
74288ac8
GS
1891 if (!*s)
1892 break;
06492da6 1893 if (!strchr("DIMUdmtwA", *s))
cea2e8a9 1894 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1895 while (++s && *s) {
1896 if (isSPACE(*s)) {
cf756827
GS
1897 if (!popt_copy) {
1898 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1899 s = popt_copy + (s - popt);
1900 d = popt_copy + (d - popt);
1901 }
4ea8f8fb
MS
1902 *s++ = '\0';
1903 break;
1904 }
1905 }
1c4db469 1906 if (*d == 't') {
317ea90d
MS
1907 if( !PL_tainting ) {
1908 PL_taint_warn = TRUE;
1909 PL_tainting = TRUE;
1910 }
1c4db469
RGS
1911 } else {
1912 moreswitches(d);
1913 }
6224f72b 1914 }
6224f72b
GS
1915 }
1916 }
a0d0e21e 1917
20ef40cf
GA
1918#ifdef USE_SITECUSTOMIZE
1919 if (!minus_f) {
1920 if (!PL_preambleav)
1921 PL_preambleav = newAV();
1922 av_unshift(PL_preambleav, 1);
1923 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1924 }
1925#endif
1926
317ea90d
MS
1927 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1928 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1929 }
1930
6224f72b
GS
1931 if (!scriptname)
1932 scriptname = argv[0];
3280af22 1933 if (PL_e_script) {
6224f72b
GS
1934 argc++,argv--;
1935 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1936 }
1937 else if (scriptname == Nullch) {
1938#ifdef MSDOS
1939 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1940 moreswitches("h");
1941#endif
1942 scriptname = "-";
1943 }
1944
b7975bdd
NC
1945 /* Set $^X early so that it can be used for relocatable paths in @INC */
1946 assert (!PL_tainted);
1947 TAINT;
1948 S_set_caret_X(aTHX);
1949 TAINT_NOT;
6224f72b
GS
1950 init_perllib();
1951
c5cccb17 1952 open_script(scriptname,dosearch,sv);
6224f72b 1953
c5cccb17 1954 validate_suid(validarg, scriptname);
6224f72b 1955
64ca3a65 1956#ifndef PERL_MICRO
0b5b802d
GS
1957#if defined(SIGCHLD) || defined(SIGCLD)
1958 {
1959#ifndef SIGCHLD
1960# define SIGCHLD SIGCLD
1961#endif
1962 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1963 if (sigstate == SIG_IGN) {
1964 if (ckWARN(WARN_SIGNAL))
9014280d 1965 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
1966 "Can't ignore signal CHLD, forcing to default");
1967 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1968 }
1969 }
1970#endif
64ca3a65 1971#endif
0b5b802d 1972
bf4acbe4
GS
1973#ifdef MACOS_TRADITIONAL
1974 if (PL_doextract || gMacPerl_AlwaysExtract) {
1975#else
f4c556ac 1976 if (PL_doextract) {
bf4acbe4 1977#endif
6224f72b 1978 find_beginning();
dd374669 1979 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
f4c556ac
GS
1980 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1981
1982 }
6224f72b 1983
3280af22
NIS
1984 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1985 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1986 CvUNIQUE_on(PL_compcv);
1987
dd2155a4 1988 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 1989#ifdef USE_5005THREADS
533c011a 1990 CvOWNER(PL_compcv) = 0;
a02a5408 1991 Newx(CvMUTEXP(PL_compcv), 1, perl_mutex);
533c011a 1992 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1993#endif /* USE_5005THREADS */
6224f72b 1994
0c4f7ff0 1995 boot_core_PerlIO();
6224f72b 1996 boot_core_UNIVERSAL();
09bef843 1997 boot_core_xsutils();
6224f72b
GS
1998
1999 if (xsinit)
acfe0abc 2000 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2001#ifndef PERL_MICRO
ed79a026 2002#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 2003 init_os_extras();
6224f72b 2004#endif
64ca3a65 2005#endif
6224f72b 2006
29209bc5 2007#ifdef USE_SOCKS
1b9c9cf5
DH
2008# ifdef HAS_SOCKS5_INIT
2009 socks5_init(argv[0]);
2010# else
29209bc5 2011 SOCKSinit(argv[0]);
1b9c9cf5 2012# endif
ac27b0f5 2013#endif
29209bc5 2014
6224f72b
GS
2015 init_predump_symbols();
2016 /* init_postdump_symbols not currently designed to be called */
2017 /* more than once (ENV isn't cleared first, for example) */
2018 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2019 if (!PL_do_undump)
6224f72b
GS
2020 init_postdump_symbols(argc,argv,env);
2021
27da23d5
JH
2022 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2023 * or explicitly in some platforms.
085a54d9 2024 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2025 * look like the user wants to use UTF-8. */
27da23d5
JH
2026#if defined(SYMBIAN)
2027 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2028#endif
06e66572
JH
2029 if (PL_unicode) {
2030 /* Requires init_predump_symbols(). */
a05d7ebb 2031 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2032 IO* io;
2033 PerlIO* fp;
2034 SV* sv;
2035
a05d7ebb 2036 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2037 * and the default open disciplines. */
a05d7ebb
JH
2038 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2039 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2040 (fp = IoIFP(io)))
2041 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2042 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2043 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2044 (fp = IoOFP(io)))
2045 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2046 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2047 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2048 (fp = IoOFP(io)))
2049 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2050 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2051 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
2052 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2053 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2054 if (in) {
2055 if (out)
2056 sv_setpvn(sv, ":utf8\0:utf8", 11);
2057 else
2058 sv_setpvn(sv, ":utf8\0", 6);
2059 }
2060 else if (out)
2061 sv_setpvn(sv, "\0:utf8", 6);
2062 SvSETMAGIC(sv);
2063 }
b310b053
JH
2064 }
2065 }
2066
4ffa73a3
JH
2067 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2068 if (strEQ(s, "unsafe"))
2069 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2070 else if (strEQ(s, "safe"))
2071 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2072 else
2073 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2074 }
2075
6224f72b
GS
2076 init_lexer();
2077
2078 /* now parse the script */
2079
93189314 2080 SETERRNO(0,SS_NORMAL);
3280af22 2081 PL_error_count = 0;
bf4acbe4
GS
2082#ifdef MACOS_TRADITIONAL
2083 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2084 if (PL_minus_c)
2085 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2086 else {
2087 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2088 MacPerl_MPWFileName(PL_origfilename));
2089 }
2090 }
2091#else
3280af22
NIS
2092 if (yyparse() || PL_error_count) {
2093 if (PL_minus_c)
cea2e8a9 2094 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2095 else {
cea2e8a9 2096 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2097 PL_origfilename);
6224f72b
GS
2098 }
2099 }
bf4acbe4 2100#endif
57843af0 2101 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2102 PL_curstash = PL_defstash;
2103 PL_preprocess = FALSE;
2104 if (PL_e_script) {
2105 SvREFCNT_dec(PL_e_script);
2106 PL_e_script = Nullsv;
6224f72b
GS
2107 }
2108
3280af22 2109 if (PL_do_undump)
6224f72b
GS
2110 my_unexec();
2111
57843af0
GS
2112 if (isWARN_ONCE) {
2113 SAVECOPFILE(PL_curcop);
2114 SAVECOPLINE(PL_curcop);
3280af22 2115 gv_check(PL_defstash);
57843af0 2116 }
6224f72b
GS
2117
2118 LEAVE;
2119 FREETMPS;
2120
2121#ifdef MYMALLOC
2122 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2123 dump_mstats("after compilation:");
2124#endif
2125
2126 ENTER;
3280af22 2127 PL_restartop = 0;
312caa8e 2128 return NULL;
6224f72b
GS
2129}
2130
954c1994
GS
2131/*
2132=for apidoc perl_run
2133
2134Tells a Perl interpreter to run. See L<perlembed>.
2135
2136=cut
2137*/
2138
6224f72b 2139int
0cb96387 2140perl_run(pTHXx)
6224f72b 2141{
6224f72b 2142 I32 oldscope;
14dd3ad8 2143 int ret = 0;
db36c5a1 2144 dJMPENV;
6224f72b 2145
9d4ba2ae
AL
2146 PERL_UNUSED_ARG(my_perl);
2147
3280af22 2148 oldscope = PL_scopestack_ix;
96e176bf
CL
2149#ifdef VMS
2150 VMSISH_HUSHED = 0;
2151#endif
6224f72b 2152
14dd3ad8 2153 JMPENV_PUSH(ret);
6224f72b
GS
2154 switch (ret) {
2155 case 1:
2156 cxstack_ix = -1; /* start context stack again */
312caa8e 2157 goto redo_body;
14dd3ad8 2158 case 0: /* normal completion */
14dd3ad8
GS
2159 redo_body:
2160 run_body(oldscope);
14dd3ad8
GS
2161 /* FALL THROUGH */
2162 case 2: /* my_exit() */
3280af22 2163 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2164 LEAVE;
2165 FREETMPS;
3280af22 2166 PL_curstash = PL_defstash;
3a1ee7e8 2167 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2168 PL_endav && !PL_minus_c)
2169 call_list(oldscope, PL_endav);
6224f72b
GS
2170#ifdef MYMALLOC
2171 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2172 dump_mstats("after execution: ");
2173#endif
14dd3ad8
GS
2174 ret = STATUS_NATIVE_EXPORT;
2175 break;
6224f72b 2176 case 3:
312caa8e
CS
2177 if (PL_restartop) {
2178 POPSTACK_TO(PL_mainstack);
2179 goto redo_body;
6224f72b 2180 }
bf49b057 2181 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2182 FREETMPS;
14dd3ad8
GS
2183 ret = 1;
2184 break;
6224f72b
GS
2185 }
2186
14dd3ad8
GS
2187 JMPENV_POP;
2188 return ret;
312caa8e
CS
2189}
2190
14dd3ad8 2191
dd374669 2192STATIC void
14dd3ad8
GS
2193S_run_body(pTHX_ I32 oldscope)
2194{
6224f72b 2195 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2196 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2197
3280af22 2198 if (!PL_restartop) {
6224f72b 2199 DEBUG_x(dump_all());
ecae49c0
NC
2200 if (!DEBUG_q_TEST)
2201 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
2202 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2203 PTR2UV(thr)));
6224f72b 2204
3280af22 2205 if (PL_minus_c) {
bf4acbe4 2206#ifdef MACOS_TRADITIONAL
e69a2255
JH
2207 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2208 (gMacPerl_ErrorFormat ? "# " : ""),
2209 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2210#else
bf49b057 2211 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2212#endif
6224f72b
GS
2213 my_exit(0);
2214 }
3280af22 2215 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2216 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2217 if (PL_initav)
2218 call_list(oldscope, PL_initav);
6224f72b
GS
2219 }
2220
2221 /* do it */
2222
3280af22 2223 if (PL_restartop) {
533c011a 2224 PL_op = PL_restartop;
3280af22 2225 PL_restartop = 0;
cea2e8a9 2226 CALLRUNOPS(aTHX);
6224f72b 2227 }
3280af22
NIS
2228 else if (PL_main_start) {
2229 CvDEPTH(PL_main_cv) = 1;
533c011a 2230 PL_op = PL_main_start;
cea2e8a9 2231 CALLRUNOPS(aTHX);
6224f72b 2232 }
f6b3007c
JH
2233 my_exit(0);
2234 /* NOTREACHED */
6224f72b
GS
2235}
2236
954c1994 2237/*
ccfc67b7
JH
2238=head1 SV Manipulation Functions
2239
954c1994
GS
2240=for apidoc p||get_sv
2241
2242Returns the SV of the specified Perl scalar. If C<create> is set and the
2243Perl variable does not exist then it will be created. If C<create> is not
2244set and the variable does not exist then NULL is returned.
2245
2246=cut
2247*/
2248
6224f72b 2249SV*
864dbfa3 2250Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2251{
2252 GV *gv;
4d1ff10f 2253#ifdef USE_5005THREADS
6224f72b
GS
2254 if (name[1] == '\0' && !isALPHA(name[0])) {
2255 PADOFFSET tmp = find_threadsv(name);
411caa50 2256 if (tmp != NOT_IN_PAD)
6224f72b 2257 return THREADSV(tmp);
6224f72b 2258 }
4d1ff10f 2259#endif /* USE_5005THREADS */
6224f72b
GS
2260 gv = gv_fetchpv(name, create, SVt_PV);
2261 if (gv)
2262 return GvSV(gv);
2263 return Nullsv;
2264}
2265
954c1994 2266/*
ccfc67b7
JH
2267=head1 Array Manipulation Functions
2268
954c1994
GS
2269=for apidoc p||get_av
2270
2271Returns the AV of the specified Perl array. If C<create> is set and the
2272Perl variable does not exist then it will be created. If C<create> is not
2273set and the variable does not exist then NULL is returned.
2274
2275=cut
2276*/
2277
6224f72b 2278AV*
864dbfa3 2279Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
2280{
2281 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
2282 if (create)
2283 return GvAVn(gv);
2284 if (gv)
2285 return GvAV(gv);
2286 return Nullav;
2287}
2288
954c1994 2289/*
ccfc67b7
JH
2290=head1 Hash Manipulation Functions
2291
954c1994
GS
2292=for apidoc p||get_hv
2293
2294Returns the HV of the specified Perl hash. If C<create> is set and the
2295Perl variable does not exist then it will be created. If C<create> is not
2296set and the variable does not exist then NULL is returned.
2297
2298=cut
2299*/
2300
6224f72b 2301HV*
864dbfa3 2302Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2303{
890ce7af 2304 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2305 if (create)
2306 return GvHVn(gv);
2307 if (gv)
2308 return GvHV(gv);
2309 return Nullhv;
2310}
2311
954c1994 2312/*
ccfc67b7
JH
2313=head1 CV Manipulation Functions
2314
954c1994
GS
2315=for apidoc p||get_cv
2316
2317Returns the CV of the specified Perl subroutine. If C<create> is set and
2318the Perl subroutine does not exist then it will be declared (which has the
2319same effect as saying C<sub name;>). If C<create> is not set and the
2320subroutine does not exist then NULL is returned.
2321
2322=cut
2323*/
2324
a0d0e21e 2325CV*
864dbfa3 2326Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
2327{
2328 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2329 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2330 /* XXX this is probably not what they think they're getting.
2331 * It has the same effect as "sub name;", i.e. just a forward
2332 * declaration! */
8ebc5c01 2333 if (create && !GvCVu(gv))
774d564b 2334 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2335 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2336 Nullop,
a0d0e21e
LW
2337 Nullop);
2338 if (gv)
8ebc5c01 2339 return GvCVu(gv);
a0d0e21e
LW
2340 return Nullcv;
2341}
2342
79072805
LW
2343/* Be sure to refetch the stack pointer after calling these routines. */
2344
954c1994 2345/*
ccfc67b7
JH
2346
2347=head1 Callback Functions
2348
954c1994
GS
2349=for apidoc p||call_argv
2350
2351Performs a callback to the specified Perl sub. See L<perlcall>.
2352
2353=cut
2354*/
2355
a0d0e21e 2356I32
8f42b153 2357Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2358
8ac85365
NIS
2359 /* See G_* flags in cop.h */
2360 /* null terminated arg list */
8990e307 2361{
a0d0e21e 2362 dSP;
8990e307 2363
924508f0 2364 PUSHMARK(SP);
a0d0e21e 2365 if (argv) {
8990e307 2366 while (*argv) {
a0d0e21e 2367 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2368 argv++;
2369 }
a0d0e21e 2370 PUTBACK;
8990e307 2371 }
864dbfa3 2372 return call_pv(sub_name, flags);
8990e307
LW
2373}
2374
954c1994
GS
2375/*
2376=for apidoc p||call_pv
2377
2378Performs a callback to the specified Perl sub. See L<perlcall>.
2379
2380=cut
2381*/
2382
a0d0e21e 2383I32
864dbfa3 2384Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2385 /* name of the subroutine */
2386 /* See G_* flags in cop.h */
a0d0e21e 2387{
864dbfa3 2388 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2389}
2390
954c1994
GS
2391/*
2392=for apidoc p||call_method
2393
2394Performs a callback to the specified Perl method. The blessed object must
2395be on the stack. See L<perlcall>.
2396
2397=cut
2398*/
2399
a0d0e21e 2400I32
864dbfa3 2401Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2402 /* name of the subroutine */
2403 /* See G_* flags in cop.h */
a0d0e21e 2404{
968b3946 2405 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2406}
2407
2408/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2409/*
2410=for apidoc p||call_sv
2411
2412Performs a callback to the Perl sub whose name is in the SV. See
2413L<perlcall>.
2414
2415=cut
2416*/
2417
a0d0e21e 2418I32
864dbfa3 2419Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2420 /* See G_* flags in cop.h */
a0d0e21e 2421{
27da23d5 2422 dVAR; dSP;
a0d0e21e 2423 LOGOP myop; /* fake syntax tree node */
968b3946 2424 UNOP method_op;
aa689395 2425 I32 oldmark;
13689cfe 2426 volatile I32 retval = 0;
a0d0e21e 2427 I32 oldscope;
54310121 2428 bool oldcatch = CATCH_GET;
6224f72b 2429 int ret;
533c011a 2430 OP* oldop = PL_op;
db36c5a1 2431 dJMPENV;
1e422769 2432
a0d0e21e
LW
2433 if (flags & G_DISCARD) {
2434 ENTER;
2435 SAVETMPS;
2436 }
2437
aa689395 2438 Zero(&myop, 1, LOGOP);
54310121 2439 myop.op_next = Nullop;
f51d4af5 2440 if (!(flags & G_NOARGS))
aa689395 2441 myop.op_flags |= OPf_STACKED;
54310121
PP
2442 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2443 (flags & G_ARRAY) ? OPf_WANT_LIST :
2444 OPf_WANT_SCALAR);
462e5cf6 2445 SAVEOP();
533c011a 2446 PL_op = (OP*)&myop;
aa689395 2447
3280af22
NIS
2448 EXTEND(PL_stack_sp, 1);
2449 *++PL_stack_sp = sv;
aa689395 2450 oldmark = TOPMARK;
3280af22 2451 oldscope = PL_scopestack_ix;
a0d0e21e 2452
3280af22 2453 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2454 /* Handle first BEGIN of -d. */
3280af22 2455 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2456 /* Try harder, since this may have been a sighandler, thus
2457 * curstash may be meaningless. */
3280af22 2458 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2459 && !(flags & G_NODEBUG))
533c011a 2460 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2461
968b3946
GS
2462 if (flags & G_METHOD) {
2463 Zero(&method_op, 1, UNOP);
2464 method_op.op_next = PL_op;
2465 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2466 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2467 PL_op = (OP*)&method_op;
968b3946
GS
2468 }
2469
312caa8e 2470 if (!(flags & G_EVAL)) {
0cdb2077 2471 CATCH_SET(TRUE);
14dd3ad8 2472 call_body((OP*)&myop, FALSE);
312caa8e 2473 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2474 CATCH_SET(oldcatch);
312caa8e
CS
2475 }
2476 else {
d78bda3d 2477 myop.op_other = (OP*)&myop;
3280af22 2478 PL_markstack_ptr--;
4633a7c4
LW
2479 /* we're trying to emulate pp_entertry() here */
2480 {
c09156bb 2481 register PERL_CONTEXT *cx;
f54cb97a 2482 const I32 gimme = GIMME_V;
ac27b0f5 2483
4633a7c4
LW
2484 ENTER;
2485 SAVETMPS;
ac27b0f5 2486
1d76a5c3 2487 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2488 PUSHEVAL(cx, 0, 0);
533c011a 2489 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2490
faef0170 2491 PL_in_eval = EVAL_INEVAL;
4633a7c4 2492 if (flags & G_KEEPERR)
faef0170 2493 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2494 else
c69006e4 2495 sv_setpvn(ERRSV,"",0);
4633a7c4 2496 }
3280af22 2497 PL_markstack_ptr++;
a0d0e21e 2498
14dd3ad8 2499 JMPENV_PUSH(ret);
6224f72b
GS
2500 switch (ret) {
2501 case 0:
14dd3ad8
GS
2502 redo_body:
2503 call_body((OP*)&myop, FALSE);
312caa8e
CS
2504 retval = PL_stack_sp - (PL_stack_base + oldmark);
2505 if (!(flags & G_KEEPERR))
c69006e4 2506 sv_setpvn(ERRSV,"",0);
a0d0e21e 2507 break;
6224f72b 2508 case 1:
f86702cc 2509 STATUS_ALL_FAILURE;
a0d0e21e 2510 /* FALL THROUGH */
6224f72b 2511 case 2:
a0d0e21e 2512 /* my_exit() was called */
3280af22 2513 PL_curstash = PL_defstash;
a0d0e21e 2514 FREETMPS;
14dd3ad8 2515 JMPENV_POP;
cc3604b1 2516 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2517 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2518 my_exit_jump();
a0d0e21e 2519 /* NOTREACHED */
6224f72b 2520 case 3:
3280af22 2521 if (PL_restartop) {
533c011a 2522 PL_op = PL_restartop;
3280af22 2523 PL_restartop = 0;
312caa8e 2524 goto redo_body;
a0d0e21e 2525 }
3280af22 2526 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2527 if (flags & G_ARRAY)
2528 retval = 0;
2529 else {
2530 retval = 1;
3280af22 2531 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2532 }
312caa8e 2533 break;
a0d0e21e 2534 }
a0d0e21e 2535
3280af22 2536 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2537 SV **newsp;
2538 PMOP *newpm;
2539 I32 gimme;
c09156bb 2540 register PERL_CONTEXT *cx;
a0a2876f
LW
2541 I32 optype;
2542
2543 POPBLOCK(cx,newpm);
2544 POPEVAL(cx);
3280af22 2545 PL_curpm = newpm;
a0a2876f 2546 LEAVE;
9d4ba2ae
AL
2547 PERL_UNUSED_VAR(newsp);
2548 PERL_UNUSED_VAR(gimme);
2549 PERL_UNUSED_VAR(optype);
a0d0e21e 2550 }
14dd3ad8 2551 JMPENV_POP;
a0d0e21e 2552 }
1e422769 2553
a0d0e21e 2554 if (flags & G_DISCARD) {
3280af22 2555 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2556 retval = 0;
2557 FREETMPS;
2558 LEAVE;
2559 }
533c011a 2560 PL_op = oldop;
a0d0e21e
LW
2561 return retval;
2562}
2563
312caa8e 2564STATIC void
dd374669 2565S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2566{
312caa8e
CS
2567 if (PL_op == myop) {
2568 if (is_eval)
f807eda9 2569 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2570 else
f807eda9 2571 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2572 }
2573 if (PL_op)
cea2e8a9 2574 CALLRUNOPS(aTHX);
312caa8e
CS
2575}
2576
6e72f9df 2577/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2578
954c1994
GS
2579/*
2580=for apidoc p||eval_sv
2581
2582Tells Perl to C<eval> the string in the SV.
2583
2584=cut
2585*/
2586
a0d0e21e 2587I32
864dbfa3 2588Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2589
8ac85365 2590 /* See G_* flags in cop.h */
a0d0e21e 2591{
924508f0 2592 dSP;
a0d0e21e 2593 UNOP myop; /* fake syntax tree node */
8fa7f367 2594 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2595 volatile I32 retval = 0;
6224f72b 2596 int ret;
533c011a 2597 OP* oldop = PL_op;
db36c5a1 2598 dJMPENV;
84902520 2599
4633a7c4
LW
2600 if (flags & G_DISCARD) {
2601 ENTER;
2602 SAVETMPS;
2603 }
2604
462e5cf6 2605 SAVEOP();
533c011a
NIS
2606 PL_op = (OP*)&myop;
2607 Zero(PL_op, 1, UNOP);
3280af22
NIS
2608 EXTEND(PL_stack_sp, 1);
2609 *++PL_stack_sp = sv;
79072805 2610
4633a7c4
LW
2611 if (!(flags & G_NOARGS))
2612 myop.op_flags = OPf_STACKED;
79072805 2613 myop.op_next = Nullop;
6e72f9df 2614 myop.op_type = OP_ENTEREVAL;
54310121
PP
2615 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2616 (flags & G_ARRAY) ? OPf_WANT_LIST :
2617 OPf_WANT_SCALAR);
6e72f9df
PP
2618 if (flags & G_KEEPERR)
2619 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2620
dedbcade
DM
2621 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2622 * before a PUSHEVAL, which corrupts the stack after a croak */
2623 TAINT_PROPER("eval_sv()");
2624
14dd3ad8 2625 JMPENV_PUSH(ret);
6224f72b
GS
2626 switch (ret) {
2627 case 0:
14dd3ad8
GS
2628 redo_body:
2629 call_body((OP*)&myop,TRUE);
312caa8e
CS
2630 retval = PL_stack_sp - (PL_stack_base + oldmark);
2631 if (!(flags & G_KEEPERR))
c69006e4 2632 sv_setpvn(ERRSV,"",0);
4633a7c4 2633 break;
6224f72b 2634 case 1:
f86702cc 2635 STATUS_ALL_FAILURE;
4633a7c4 2636 /* FALL THROUGH */
6224f72b 2637 case 2:
4633a7c4 2638 /* my_exit() was called */
3280af22 2639 PL_curstash = PL_defstash;
4633a7c4 2640 FREETMPS;
14dd3ad8 2641 JMPENV_POP;
cc3604b1 2642 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2643 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2644 my_exit_jump();
4633a7c4 2645 /* NOTREACHED */
6224f72b 2646 case 3:
3280af22 2647 if (PL_restartop) {
533c011a 2648 PL_op = PL_restartop;
3280af22 2649 PL_restartop = 0;
312caa8e 2650 goto redo_body;
4633a7c4 2651 }
3280af22 2652 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2653 if (flags & G_ARRAY)
2654 retval = 0;
2655 else {
2656 retval = 1;
3280af22 2657 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2658 }
312caa8e 2659 break;
4633a7c4
LW
2660 }
2661
14dd3ad8 2662 JMPENV_POP;
4633a7c4 2663 if (flags & G_DISCARD) {
3280af22 2664 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2665 retval = 0;
2666 FREETMPS;
2667 LEAVE;
2668 }
533c011a 2669 PL_op = oldop;
4633a7c4
LW
2670 return retval;
2671}
2672
954c1994
GS
2673/*
2674=for apidoc p||eval_pv
2675
2676Tells Perl to C<eval> the given string and return an SV* result.
2677
2678=cut
2679*/
2680
137443ea 2681SV*
864dbfa3 2682Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2683{
2684 dSP;
2685 SV* sv = newSVpv(p, 0);
2686
864dbfa3 2687 eval_sv(sv, G_SCALAR);
137443ea
PP
2688 SvREFCNT_dec(sv);
2689
2690 SPAGAIN;
2691 sv = POPs;
2692 PUTBACK;
2693
2d8e6c8d 2694 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2695 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2696 }
137443ea
PP
2697
2698 return sv;
2699}
2700
4633a7c4
LW
2701/* Require a module. */
2702
954c1994 2703/*
ccfc67b7
JH
2704=head1 Embedding Functions
2705
954c1994
GS
2706=for apidoc p||require_pv
2707
7d3fb230
BS
2708Tells Perl to C<require> the file named by the string argument. It is
2709analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2710implemented that way; consider using load_module instead.
954c1994 2711
7d3fb230 2712=cut */
954c1994 2713
4633a7c4 2714void
864dbfa3 2715Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2716{
d3acc0f7
JP
2717 SV* sv;
2718 dSP;
e788e7d3 2719 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2720 PUTBACK;
be41e5d9
NC
2721 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2722 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2723 SPAGAIN;
2724 POPSTACK;
79072805
LW
2725}
2726
79072805 2727void
e1ec3a88 2728Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805
LW
2729{
2730 register GV *gv;
2731
155aba94 2732 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2733 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2734}
2735
76e3520e 2736STATIC void
e1ec3a88 2737S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2738{
ab821d7f 2739 /* This message really ought to be max 23 lines.
75c72d73 2740 * Removed -h because the user already knows that option. Others? */
fb73857a 2741
27da23d5 2742 static const char * const usage_msg[] = {
aefc56c5
SF
2743"-0[octal] specify record separator (\\0, if no argument)",
2744"-A[mod][=pattern] activate all/given assertions",
2745"-a autosplit mode with -n or -p (splits $_ into @F)",
2746"-C[number/list] enables the listed Unicode features",
2747"-c check syntax only (runs BEGIN and CHECK blocks)",
2748"-d[:debugger] run program under debugger",
2749"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2750"-e program one line of program (several -e's allowed, omit programfile)",
aefc56c5 2751"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2752"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2753"-i[extension] edit <> files in place (makes backup if extension supplied)",
2754"-Idirectory specify @INC/#include directory (several -I's allowed)",
2755"-l[octal] enable line ending processing, specifies line terminator",
2756"-[mM][-]module execute \"use/no module...\" before executing program",
2757"-n assume \"while (<>) { ... }\" loop around program",
2758"-p assume loop like -n but print line also, like sed",
2759"-P run program through C preprocessor before compilation",
2760"-s enable rudimentary parsing for switches after programfile",
2761"-S look for programfile using PATH environment variable",
2762"-t enable tainting warnings",
2763"-T enable tainting checks",
2764"-u dump core after parsing program",
2765"-U allow unsafe operations",
2766"-v print version, subversion (includes VERY IMPORTANT perl info)",
2767"-V[:variable] print configuration summary (or a single Config.pm variable)",
2768"-w enable many useful warnings (RECOMMENDED)",
2769"-W enable all warnings",
2770"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2771"-X disable all warnings",
fb73857a
PP
2772"\n",
2773NULL
2774};
27da23d5 2775 const char * const *p = usage_msg;
fb73857a 2776
b0e47665
GS
2777 PerlIO_printf(PerlIO_stdout(),
2778 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2779 name);
fb73857a 2780 while (*p)
b0e47665 2781 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2782}
2783
b4ab917c
DM
2784/* convert a string of -D options (or digits) into an int.
2785 * sets *s to point to the char after the options */
2786
2787#ifdef DEBUGGING
2788int
e1ec3a88 2789Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2790{
27da23d5 2791 static const char * const usage_msgd[] = {
e6e64d9b
JC
2792 " Debugging flag values: (see also -d)",
2793 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2794 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2795 " l Context (loop) stack processing",
2796 " t Trace execution",
2797 " o Method and overloading resolution",
2798 " c String/numeric conversions",
2799 " P Print profiling info, preprocessor command for -P, source file input state",
2800 " m Memory allocation",
2801 " f Format processing",
2802 " r Regular expression parsing and execution",
2803 " x Syntax tree dump",
3679267a 2804 " u Tainting checks",
e6e64d9b
JC
2805 " H Hash dump -- usurps values()",
2806 " X Scratchpad allocation",
2807 " D Cleaning up",
2808 " S Thread synchronization",
2809 " T Tokenising",
2810 " R Include reference counts of dumped variables (eg when using -Ds)",
2811 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2812 " v Verbose: use in conjunction with other flags",
2813 " C Copy On Write",
2814 " A Consistency checks on internal structures",
3679267a 2815 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2816 NULL
2817 };
b4ab917c
DM
2818 int i = 0;
2819 if (isALPHA(**s)) {
2820 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2821 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2822
2823 for (; isALNUM(**s); (*s)++) {
e1ec3a88 2824 const char *d = strchr(debopts,**s);
b4ab917c
DM
2825 if (d)
2826 i |= 1 << (d - debopts);
2827 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2828 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2829 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2830 }
2831 }
e6e64d9b 2832 else if (isDIGIT(**s)) {
b4ab917c
DM
2833 i = atoi(*s);
2834 for (; isALNUM(**s); (*s)++) ;
2835 }
ddcf8bc1 2836 else if (givehelp) {
aadb217d 2837 char **p = (char **)usage_msgd;
e6e64d9b
JC
2838 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2839 }
b4ab917c
DM
2840# ifdef EBCDIC
2841 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2842 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2843 "-Dp not implemented on this platform\n");
2844# endif
2845 return i;
2846}
2847#endif
2848
79072805
LW
2849/* This routine handles any switches that can be given during run */
2850
2851char *
864dbfa3 2852Perl_moreswitches(pTHX_ char *s)
79072805 2853{
27da23d5 2854 dVAR;
84c133a0 2855 UV rschar;
79072805
LW
2856
2857 switch (*s) {
2858 case '0':
a863c7d1 2859 {
f2095865 2860 I32 flags = 0;
a3b680e6 2861 STRLEN numlen;
f2095865
JH
2862
2863 SvREFCNT_dec(PL_rs);
2864 if (s[1] == 'x' && s[2]) {
a3b680e6 2865 const char *e = s+=2;
f2095865
JH
2866 U8 *tmps;
2867
a3b680e6
AL
2868 while (*e)
2869 e++;
f2095865
JH
2870 numlen = e - s;
2871 flags = PERL_SCAN_SILENT_ILLDIGIT;
2872 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2873 if (s + numlen < e) {
2874 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2875 numlen = 0;
2876 s--;
2877 }
2878 PL_rs = newSVpvn("", 0);
c5661c80 2879 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2880 tmps = (U8*)SvPVX(PL_rs);
2881 uvchr_to_utf8(tmps, rschar);
2882 SvCUR_set(PL_rs, UNISKIP(rschar));
2883 SvUTF8_on(PL_rs);
2884 }
2885 else {
2886 numlen = 4;
2887 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2888 if (rschar & ~((U8)~0))
2889 PL_rs = &PL_sv_undef;
2890 else if (!rschar && numlen >= 2)
2891 PL_rs = newSVpvn("", 0);
2892 else {
2893 char ch = (char)rschar;
2894 PL_rs = newSVpvn(&ch, 1);
2895 }
2896 }
800633c3 2897 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2898 return s + numlen;
a863c7d1 2899 }
46487f74 2900 case 'C':
a05d7ebb 2901 s++;
dd374669 2902 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2903 return s;
2304df62 2904 case 'F':
3280af22 2905 PL_minus_F = TRUE;
ebce5377
RGS
2906 PL_splitstr = ++s;
2907 while (*s && !isSPACE(*s)) ++s;
2908 *s = '\0';
2909 PL_splitstr = savepv(PL_splitstr);
2304df62 2910 return s;
79072805 2911 case 'a':
3280af22 2912 PL_minus_a = TRUE;
79072805
LW
2913 s++;
2914 return s;
2915 case 'c':
3280af22 2916 PL_minus_c = TRUE;
79072805
LW
2917 s++;
2918 return s;
2919 case 'd':
bbce6d69 2920 forbid_setid("-d");
4633a7c4 2921 s++;
2cbb2ee1
RGS
2922
2923 /* -dt indicates to the debugger that threads will be used */
2924 if (*s == 't' && !isALNUM(s[1])) {
2925 ++s;
2926 my_setenv("PERL5DB_THREADED", "1");
2927 }
2928
70c94a19
RR
2929 /* The following permits -d:Mod to accepts arguments following an =
2930 in the fashion that -MSome::Mod does. */
2931 if (*s == ':' || *s == '=') {
06b5626a 2932 const char *start;
70c94a19
RR
2933 SV *sv;
2934 sv = newSVpv("use Devel::", 0);
2935 start = ++s;
2936 /* We now allow -d:Module=Foo,Bar */
2937 while(isALNUM(*s) || *s==':') ++s;
2938 if (*s != '=')
2939 sv_catpv(sv, start);
2940 else {
2941 sv_catpvn(sv, start, s-start);
0c5a913d 2942 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 2943 }
4633a7c4 2944 s += strlen(s);
184f32ec 2945 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 2946 }
ed094faf 2947 if (!PL_perldb) {
3280af22 2948 PL_perldb = PERLDB_ALL;
a0d0e21e 2949 init_debugger();
ed094faf 2950 }
79072805
LW
2951 return s;
2952 case 'D':
0453d815 2953 {
79072805 2954#ifdef DEBUGGING
bbce6d69 2955 forbid_setid("-D");
b4ab917c 2956 s++;
dd374669 2957 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 2958#else /* !DEBUGGING */
0453d815 2959 if (ckWARN_d(WARN_DEBUGGING))
9014280d 2960 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 2961 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 2962 for (s++; isALNUM(*s); s++) ;
79072805 2963#endif
79072805 2964 return s;
0453d815 2965 }
4633a7c4 2966 case 'h':
ac27b0f5 2967 usage(PL_origargv[0]);
7ca617d0 2968 my_exit(0);
79072805 2969 case 'i':
43c5f42d 2970 Safefree(PL_inplace);
c030f24b
GH
2971#if defined(__CYGWIN__) /* do backup extension automagically */
2972 if (*(s+1) == '\0') {
2973 PL_inplace = savepv(".bak");
2974 return s+1;
2975 }
2976#endif /* __CYGWIN__ */
3280af22 2977 PL_inplace = savepv(s+1);
a6e20a40
AL
2978 for (s = PL_inplace; *s && !isSPACE(*s); s++)
2979 ;
7b8d334a 2980 if (*s) {
fb73857a 2981 *s++ = '\0';
7b8d334a
GS
2982 if (*s == '-') /* Additional switches on #! line. */
2983 s++;
2984 }
fb73857a 2985 return s;
4e49a025 2986 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2987 forbid_setid("-I");
fb73857a
PP
2988 ++s;
2989 while (*s && isSPACE(*s))
2990 ++s;
2991 if (*s) {
774d564b 2992 char *e, *p;
0df16ed7
GS
2993 p = s;
2994 /* ignore trailing spaces (possibly followed by other switches) */
2995 do {
2996 for (e = p; *e && !isSPACE(*e); e++) ;
2997 p = e;
2998 while (isSPACE(*p))
2999 p++;
3000 } while (*p && *p != '-');
3001 e = savepvn(s, e-s);
88fe16b2 3002 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3003 Safefree(e);
3004 s = p;
3005 if (*s == '-')
3006 s++;
79072805
LW
3007 }
3008 else
a67e862a 3009 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3010 return s;
79072805 3011 case 'l':
3280af22 3012 PL_minus_l = TRUE;
79072805 3013 s++;
7889fe52
NIS
3014 if (PL_ors_sv) {
3015 SvREFCNT_dec(PL_ors_sv);
3016 PL_ors_sv = Nullsv;
3017 }
79072805 3018 if (isDIGIT(*s)) {
53305cf1 3019 I32 flags = 0;
a3b680e6 3020 STRLEN numlen;
7889fe52 3021 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
3022 numlen = 3 + (*s == '0');
3023 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3024 s += numlen;
3025 }
3026 else {
8bfdd7d9 3027 if (RsPARA(PL_rs)) {
7889fe52
NIS
3028 PL_ors_sv = newSVpvn("\n\n",2);
3029 }
3030 else {
8bfdd7d9 3031 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3032 }
79072805
LW
3033 }
3034 return s;
06492da6
SF
3035 case 'A':
3036 forbid_setid("-A");
930366bd
RGS
3037 if (!PL_preambleav)
3038 PL_preambleav = newAV();
aefc56c5
SF
3039 s++;
3040 {
3041 char *start = s;
3042 SV *sv = newSVpv("use assertions::activate", 24);
3043 while(isALNUM(*s) || *s == ':') ++s;
3044 if (s != start) {
3045 sv_catpvn(sv, "::", 2);
3046 sv_catpvn(sv, start, s-start);
3047 }
3048 if (*s == '=') {
0c5a913d 3049 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3050 s+=strlen(s);
3051 }
3052 else if (*s != '\0') {
3053 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, s-start, start);
3054 }
06492da6 3055 av_push(PL_preambleav, sv);
aefc56c5 3056 return s;
06492da6 3057 }
1a30305b 3058 case 'M':
bbce6d69 3059 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3060 /* FALL THROUGH */
3061 case 'm':
bbce6d69 3062 forbid_setid("-m"); /* XXX ? */
1a30305b 3063 if (*++s) {
a5f75d66 3064 char *start;
11343788 3065 SV *sv;
e1ec3a88 3066 const char *use = "use ";
a5f75d66 3067 /* -M-foo == 'no foo' */
d0043bd1
NC
3068 /* Leading space on " no " is deliberate, to make both
3069 possibilities the same length. */
3070 if (*s == '-') { use = " no "; ++s; }
3071 sv = newSVpvn(use,4);
a5f75d66 3072 start = s;
1a30305b 3073 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3074 while(isALNUM(*s) || *s==':') ++s;
3075 if (*s != '=') {
11343788 3076 sv_catpv(sv, start);
c07a80fd
PP
3077 if (*(start-1) == 'm') {
3078 if (*s != '\0')
cea2e8a9 3079 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 3080 sv_catpv( sv, " ()");
c07a80fd
PP
3081 }
3082 } else {
6df41af2 3083 if (s == start)
be98fb35
GS
3084 Perl_croak(aTHX_ "Module name required with -%c option",
3085 s[-1]);
11343788 3086 sv_catpvn(sv, start, s-start);
3d27e215
LM
3087 sv_catpv(sv, " split(/,/,q");
3088 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
11343788 3089 sv_catpv(sv, ++s);
3d27e215 3090 sv_catpvn(sv, "\0)", 2);
c07a80fd 3091 }
1a30305b 3092 s += strlen(s);
5c831c24 3093 if (!PL_preambleav)
3280af22
NIS
3094 PL_preambleav = newAV();
3095 av_push(PL_preambleav, sv);
1a30305b
PP
3096 }
3097 else
9e81e6a1 3098 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3099 return s;
79072805 3100 case 'n':
3280af22 3101 PL_minus_n = TRUE;
79072805
LW
3102 s++;
3103 return s;
3104 case 'p':
3280af22 3105 PL_minus_p = TRUE;
79072805
LW
3106 s++;
3107 return s;
3108 case 's':
bbce6d69 3109 forbid_setid("-s");
3280af22 3110 PL_doswitches = TRUE;
79072805
LW
3111 s++;
3112 return s;
6537fe72
MS
3113 case 't':
3114 if (!PL_tainting)
22f7c9c9 3115 TOO_LATE_FOR('t');
6537fe72
MS
3116 s++;
3117 return s;
463ee0b2 3118 case 'T':
3280af22 3119 if (!PL_tainting)
22f7c9c9 3120 TOO_LATE_FOR('T');
463ee0b2
LW
3121 s++;
3122 return s;
79072805 3123 case 'u':
bf4acbe4
GS
3124#ifdef MACOS_TRADITIONAL
3125 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3126#endif
3280af22 3127 PL_do_undump = TRUE;
79072805
LW
3128 s++;
3129 return s;
3130 case 'U':
3280af22 3131 PL_unsafe = TRUE;
79072805
LW
3132 s++;
3133 return s;
3134 case 'v':
d7aa5382
JP
3135 if (!sv_derived_from(PL_patchlevel, "version"))
3136 (void *)upg_version(PL_patchlevel);
8e9464f1 3137#if !defined(DGUX)
b0e47665 3138 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3139 Perl_form(aTHX_ "\nThis is perl, %"SVf" built for %s",
d7aa5382
JP
3140 vstringify(PL_patchlevel),
3141 ARCHNAME));
8e9464f1
JH
3142#else /* DGUX */
3143/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3144 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3145 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3146 vstringify(PL_patchlevel)));
8e9464f1
JH
3147 PerlIO_printf(PerlIO_stdout(),
3148 Perl_form(aTHX_ " built under %s at %s %s\n",
3149 OSNAME, __DATE__, __TIME__));
3150 PerlIO_printf(PerlIO_stdout(),
3151 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3152 OSVERS));
8e9464f1
JH
3153#endif /* !DGUX */
3154
fb73857a
PP
3155#if defined(LOCAL_PATCH_COUNT)
3156 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3157 PerlIO_printf(PerlIO_stdout(),
3158 "\n(with %d registered patch%s, "
3159 "see perl -V for more detail)",
3160 (int)LOCAL_PATCH_COUNT,
3161 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3162#endif
1a30305b 3163
b0e47665 3164 PerlIO_printf(PerlIO_stdout(),
359b00fe 3165 "\n\nCopyright 1987-2005, Larry Wall\n");
eae9c151
JH
3166#ifdef MACOS_TRADITIONAL
3167 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3168 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3169 "maintained by Chris Nandor\n");
eae9c151 3170#endif
79072805 3171#ifdef MSDOS
b0e47665
GS
3172 PerlIO_printf(PerlIO_stdout(),
3173 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3174#endif
3175#ifdef DJGPP
b0e47665
GS
3176 PerlIO_printf(PerlIO_stdout(),
3177 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3178 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3179#endif
79072805 3180#ifdef OS2
b0e47665
GS
3181 PerlIO_printf(PerlIO_stdout(),
3182 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3183 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3184#endif
79072805 3185#ifdef atarist
b0e47665
GS
3186 PerlIO_printf(PerlIO_stdout(),
3187 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3188#endif
a3f9223b 3189#ifdef __BEOS__
b0e47665
GS
3190 PerlIO_printf(PerlIO_stdout(),
3191 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3192#endif
1d84e8df 3193#ifdef MPE
b0e47665 3194 PerlIO_printf(PerlIO_stdout(),
e583a879 3195 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3196#endif
9d116dd7 3197#ifdef OEMVS
b0e47665
GS
3198 PerlIO_printf(PerlIO_stdout(),
3199 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3200#endif
495c5fdc 3201#ifdef __VOS__
b0e47665 3202 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3203 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3204#endif
092bebab 3205#ifdef __OPEN_VM
b0e47665
GS
3206 PerlIO_printf(PerlIO_stdout(),
3207 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3208#endif
a1a0e61e 3209#ifdef POSIX_BC
b0e47665
GS
3210 PerlIO_printf(PerlIO_stdout(),
3211 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3212#endif
61ae2fbf 3213#ifdef __MINT__
b0e47665
GS
3214 PerlIO_printf(PerlIO_stdout(),
3215 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3216#endif
f83d2536 3217#ifdef EPOC
b0e47665 3218 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3219 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3220#endif
e1caacb4 3221#ifdef UNDER_CE
b475b3e6
JH
3222 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3223 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3224 wce_hitreturn();
3225#endif
27da23d5
JH
3226#ifdef SYMBIAN
3227 PerlIO_printf(PerlIO_stdout(),
3228 "Symbian port by Nokia, 2004-2005\n");
3229#endif
baed7233
DL
3230#ifdef BINARY_BUILD_NOTICE
3231 BINARY_BUILD_NOTICE;
3232#endif
b0e47665
GS
3233 PerlIO_printf(PerlIO_stdout(),
3234 "\n\
79072805 3235Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3236GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3237Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3238this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3239Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3240 my_exit(0);
79072805 3241 case 'w':
599cee73 3242 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3243 PL_dowarn |= G_WARN_ON;
599cee73
PM
3244 s++;
3245 return s;
3246 case 'W':
ac27b0f5 3247 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3248 if (!specialWARN(PL_compiling.cop_warnings))
3249 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3250 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3251 s++;
3252 return s;
3253 case 'X':
ac27b0f5 3254 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3255 if (!specialWARN(PL_compiling.cop_warnings))
3256 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3257 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3258 s++;
3259 return s;
a0d0e21e 3260 case '*':
79072805
LW
3261 case ' ':
3262 if (s[1] == '-') /* Additional switches on #! line. */
3263 return s+2;
3264 break;
a0d0e21e 3265 case '-':
79072805 3266 case 0:
51882d45 3267#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3268 case '\r':
3269#endif
79072805
LW
3270 case '\n':
3271 case '\t':
3272 break;
aa689395
PP
3273#ifdef ALTERNATE_SHEBANG
3274 case 'S': /* OS/2 needs -S on "extproc" line. */
3275 break;
3276#endif
a0d0e21e 3277 case 'P':
3280af22 3278 if (PL_preprocess)
a0d0e21e
LW
3279 return s+1;
3280 /* FALL THROUGH */
79072805 3281 default:
cea2e8a9 3282 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
3283 }
3284 return Nullch;
3285}
3286
3287/* compliments of Tom Christiansen */
3288
3289/* unexec() can be found in the Gnu emacs distribution */
ee580363 3290/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3291
3292void
864dbfa3 3293Perl_my_unexec(pTHX)
79072805
LW
3294{
3295#ifdef UNEXEC
46fc3d4c
PP
3296 SV* prog;
3297 SV* file;
ee580363 3298 int status = 1;
79072805
LW
3299 extern int etext;
3300
ee580363 3301 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 3302 sv_catpv(prog, "/perl");
6b88bc9c 3303 file = newSVpv(PL_origfilename, 0);
46fc3d4c 3304 sv_catpv(file, ".perldump");
79072805 3305
ee580363
GS
3306 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3307 /* unexec prints msg to stderr in case of failure */
6ad3d225 3308 PerlProc_exit(status);
79072805 3309#else
a5f75d66
AD
3310# ifdef VMS
3311# include <lib$routines.h>
3312 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 3313# else
79072805 3314 ABORT(); /* for use with undump */
aa689395 3315# endif
a5f75d66 3316#endif
79072805
LW
3317}
3318
cb68f92d
GS
3319/* initialize curinterp */
3320STATIC void
cea2e8a9 3321S_init_interp(pTHX)
cb68f92d
GS
3322{
3323
acfe0abc
GS
3324#ifdef MULTIPLICITY
3325# define PERLVAR(var,type)
3326# define PERLVARA(var,n,type)
3327# if defined(PERL_IMPLICIT_CONTEXT)
3328# if defined(USE_5005THREADS)
3329# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3330# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3331# else /* !USE_5005THREADS */
3332# define PERLVARI(var,type,init) aTHX->var = init;
3333# define PERLVARIC(var,type,init) aTHX->var = init;
3334# endif /* USE_5005THREADS */
3967c732 3335# else
acfe0abc
GS
3336# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3337# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3338# endif
acfe0abc
GS
3339# include "intrpvar.h"
3340# ifndef USE_5005THREADS
3341# include "thrdvar.h"
3342# endif
3343# undef PERLVAR
3344# undef PERLVARA
3345# undef PERLVARI
3346# undef PERLVARIC
3347#else
3348# define PERLVAR(var,type)
3349# define PERLVARA(var,n,type)
3350# define PERLVARI(var,type,init) PL_##var = init;
3351# define PERLVARIC(var,type,init) PL_##var = init;
3352# include "intrpvar.h"
3353# ifndef USE_5005THREADS
3354# include "thrdvar.h"
3355# endif
3356# undef PERLVAR
3357# undef PERLVARA
3358# undef PERLVARI
3359# undef PERLVARIC
cb68f92d
GS
3360#endif
3361
cb68f92d
GS
3362}
3363
76e3520e 3364STATIC void
cea2e8a9 3365S_init_main_stash(pTHX)
79072805 3366{
463ee0b2 3367 GV *gv;
6e72f9df 3368
3280af22 3369 PL_curstash = PL_defstash = newHV();
79cb57f6 3370 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
3371 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
3372 SvREFCNT_dec(GvHV(gv));
3280af22 3373 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3374 SvREADONLY_on(gv);
bfcb3514 3375 Perl_hv_name_set(aTHX_ PL_defstash, "main", 4, 0);
3280af22
NIS
3376 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
3377 GvMULTI_on(PL_incgv);
3378 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3379 GvMULTI_on(PL_hintgv);
3380 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
3381 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
3382 GvMULTI_on(PL_errgv);
3383 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3384 GvMULTI_on(PL_replgv);
cea2e8a9 3385 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3386#ifdef PERL_DONT_CREATE_GVSV
3387 gv_SVadd(PL_errgv);
3388#endif
38a03e6e
MB
3389 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3390 sv_setpvn(ERRSV, "", 0);
3280af22 3391 PL_curstash = PL_defstash;
11faa288 3392 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 3393 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 3394 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 3395 /* We must init $/ before switches are processed. */
864dbfa3 3396 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3397}
3398
ae3f3efd 3399/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3400STATIC void
dd374669 3401S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3402{
ae3f3efd 3403#ifndef IAMSUID
e1ec3a88
AL
3404 const char *quote;
3405 const char *code;
3406 const char *cpp_discard_flag;
3407 const char *perl;
ae3f3efd 3408#endif
27da23d5 3409 dVAR;
1b24ed4b 3410
ae3f3efd
PS
3411 PL_fdscript = -1;
3412 PL_suidscript = -1;
79072805 3413
3280af22 3414 if (PL_e_script) {
ff5bdd37 3415 PL_origfilename = savepvn("-e", 2);
96436eeb 3416 }
6c4ab083
GS
3417 else {
3418 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3419 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
3420
3421 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
e1ec3a88 3422 const char *s = scriptname + 8;
ae3f3efd 3423 PL_fdscript = atoi(s);
6c4ab083
GS
3424 while (isDIGIT(*s))
3425 s++;
3426 if (*s) {
ae3f3efd
PS
3427 /* PSz 18 Feb 04
3428 * Tell apart "normal" usage of fdscript, e.g.
3429 * with bash on FreeBSD:
3430 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3431 * from usage in suidperl.
3432 * Does any "normal" usage leave garbage after the number???
3433 * Is it a mistake to use a similar /dev/fd/ construct for
3434 * suidperl?
3435 */
3436 PL_suidscript = 1;
3437 /* PSz 20 Feb 04
3438 * Be supersafe and do some sanity-checks.
3439 * Still, can we be sure we got the right thing?
3440 */
3441 if (*s != '/') {
3442 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3443 }
3444 if (! *(s+1)) {
3445 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3446 }
6c4ab083 3447 scriptname = savepv(s + 1);
3280af22 3448 Safefree(PL_origfilename);
dd374669 3449 PL_origfilename = (char *)scriptname;
6c4ab083
GS
3450 }
3451 }
3452 }
3453
05ec9bb3 3454 CopFILE_free(PL_curcop);
57843af0 3455 CopFILE_set(PL_curcop, PL_origfilename);
770526c1 3456 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
dd374669 3457 scriptname = (char *)"";
ae3f3efd
PS
3458 if (PL_fdscript >= 0) {
3459 PL_rsfp = PerlIO_fdopen(PL_fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS
3460# if defined(HAS_FCNTL) && defined(F_SETFD)
3461 if (PL_rsfp)
3462 /* ensure close-on-exec */
3463 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3464# endif
96436eeb 3465 }
ae3f3efd
PS
3466#ifdef IAMSUID
3467 else {
86207487
NC
3468 Perl_croak(aTHX_ "sperl needs fd script\n"
3469 "You should not call sperl directly; do you need to "
3470 "change a #! line\nfrom sperl to perl?\n");
3471
ae3f3efd
PS
3472/* PSz 11 Nov 03
3473 * Do not open (or do other fancy stuff) while setuid.
3474 * Perl does the open, and hands script to suidperl on a fd;
3475 * suidperl only does some checks, sets up UIDs and re-execs
3476 * perl with that fd as it has always done.
3477 */
3478 }
3479 if (PL_suidscript != 1) {
3480 Perl_croak(aTHX_ "suidperl needs (suid) fd script\n");
3481 }
3482#else /* IAMSUID */
3280af22 3483 else if (PL_preprocess) {
dd374669 3484 const char *cpp_cfg = CPPSTDIN;
79cb57f6 3485 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
3486 SV *cmd = NEWSV(0,0);
3487
ae58f265
JH
3488 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
3489 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
46fc3d4c 3490 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 3491 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 3492 sv_catpv(cpp, cpp_cfg);
79072805 3493
1b24ed4b
MS
3494# ifndef VMS
3495 sv_catpvn(sv, "-I", 2);
3496 sv_catpv(sv,PRIVLIB_EXP);
3497# endif
46fc3d4c 3498
14953ddc
MB
3499 DEBUG_P(PerlIO_printf(Perl_debug_log,
3500 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
848ef955
NC
3501 scriptname, SvPVX_const (cpp), SvPVX_const (sv),
3502 CPPMINUS));
1b24ed4b
MS
3503
3504# if defined(MSDOS) || defined(WIN32) || defined(VMS)
3505 quote = "\"";
3506# else
3507 quote = "'";
3508# endif
3509
3510# ifdef VMS
3511 cpp_discard_flag = "";
3512# else
3513 cpp_discard_flag = "-C";
3514# endif
3515
3516# ifdef OS2
3517 perl = os2_execname(aTHX);
3518# else
3519 perl = PL_origargv[0];
3520# endif
3521
3522
3523 /* This strips off Perl comments which might interfere with
62375a60
NIS
3524 the C pre-processor, including #!. #line directives are
3525 deliberately stripped to avoid confusion with Perl's version
1b24ed4b
MS
3526 of #line. FWP played some golf with it so it will fit
3527 into VMS's 255 character buffer.
3528 */
3529 if( PL_doextract )
3530 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3531 else
3532 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3533
3534 Perl_sv_setpvf(aTHX_ cmd, "\
3535%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
62375a60 3536 perl, quote, code, quote, scriptname, cpp,
1b24ed4b
MS
3537 cpp_discard_flag, sv, CPPMINUS);
3538
3280af22 3539 PL_doextract = FALSE;
0a6c758d 3540
62375a60
NIS
3541 DEBUG_P(PerlIO_printf(Perl_debug_log,
3542 "PL_preprocess: cmd=\"%s\"\n",
848ef955 3543 SvPVX_const(cmd)));
0a6c758d 3544
848ef955 3545 PL_rsfp = PerlProc_popen((char *)SvPVX_const(cmd), (char *)"r");
46fc3d4c
PP
3546 SvREFCNT_dec(cmd);
3547 SvREFCNT_dec(cpp);
79072805
LW
3548 }
3549 else if (!*scriptname) {
bbce6d69 3550 forbid_setid("program input from stdin");
3280af22 3551 PL_rsfp = PerlIO_stdin();
79072805 3552 }
96436eeb 3553 else {
3280af22 3554 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS
3555# if defined(HAS_FCNTL) && defined(F_SETFD)
3556 if (PL_rsfp)
3557 /* ensure close-on-exec */
3558 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3559# endif
96436eeb 3560 }
ae3f3efd 3561#endif /* IAMSUID */
3280af22 3562 if (!PL_rsfp) {
447218f8 3563 /* PSz 16 Sep 03 Keep neat error message */
fa3aa65a
JC
3564 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3565 CopFILE(PL_curcop), Strerror(errno));
13281fa4 3566 }
79072805 3567}
8d063cd8 3568
7b89560d
JH
3569/* Mention
3570 * I_SYSSTATVFS HAS_FSTATVFS
3571 * I_SYSMOUNT
c890dc6c