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[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
166f8a29
DM
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
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
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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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
GS
159#ifdef PERL_IMPLICIT_SYS
160PerlInterpreter *
7766f137
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161perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
162 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
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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;
32e30700
GS
168 /* New() needs interpreter, so call malloc() instead */
169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 170 S_init_tls_and_interp(my_perl);
32e30700
GS
171 Zero(my_perl, 1, PerlInterpreter);
172 PL_Mem = ipM;
7766f137
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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
GS
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
54aff467 201 /* New() needs interpreter, so call malloc() instead */
e8ee3774 202 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 203
e6827a76 204 S_init_tls_and_interp(my_perl);
07409e01 205 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
79072805 206}
32e30700 207#endif /* PERL_IMPLICIT_SYS */
79072805 208
954c1994
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209/*
210=for apidoc perl_construct
211
212Initializes a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
79072805 217void
0cb96387 218perl_construct(pTHXx)
79072805 219{
27da23d5 220 dVAR;
9d4ba2ae 221 PERL_UNUSED_ARG(my_perl);
8990e307 222#ifdef MULTIPLICITY
54aff467 223 init_interp();
ac27b0f5 224 PL_perl_destruct_level = 1;
54aff467
GS
225#else
226 if (PL_perl_destruct_level > 0)
227 init_interp();
228#endif
33f46ff6 229 /* Init the real globals (and main thread)? */
3280af22 230 if (!PL_linestr) {
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231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
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233 PL_linestr = NEWSV(65,79);
234 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 235
3280af22 236 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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237 /* set read-only and try to insure than we wont see REFCNT==0
238 very often */
239
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240 SvREADONLY_on(&PL_sv_undef);
241 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 242
3280af22 243 sv_setpv(&PL_sv_no,PL_No);
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244 /* value lookup in void context - happens to have the side effect
245 of caching the numeric forms. */
246 SvIV(&PL_sv_no);
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247 SvNV(&PL_sv_no);
248 SvREADONLY_on(&PL_sv_no);
249 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 250
3280af22 251 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 252 SvIV(&PL_sv_yes);
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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();
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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
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288 PL_fdpid = newAV(); /* for remembering popen pids by fd */
289 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 290 PL_errors = newSVpvn("",0);
48c6b404 291 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
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
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381}
382
954c1994 383/*
62375a60
NIS
384=for apidoc nothreadhook
385
386Stub that provides thread hook for perl_destruct when there are
387no threads.
388
389=cut
390*/
391
392int
4e9e3734 393Perl_nothreadhook(pTHX)
62375a60
NIS
394{
395 return 0;
396}
397
41e4abd8
NC
398#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
399void
400Perl_dump_sv_child(pTHX_ SV *sv)
401{
402 ssize_t got;
bf357333
NC
403 const int sock = PL_dumper_fd;
404 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
405 union control_un control;
406 struct msghdr msg;
808ad2d0 407 struct iovec vec[2];
bf357333 408 struct cmsghdr *cmptr;
808ad2d0
NC
409 int returned_errno;
410 unsigned char buffer[256];
41e4abd8 411
bf357333 412 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
413 return;
414
415 PerlIO_flush(Perl_debug_log);
416
bf357333
NC
417 /* All these shenanigans are to pass a file descriptor over to our child for
418 it to dump out to. We can't let it hold open the file descriptor when it
419 forks, as the file descriptor it will dump to can turn out to be one end
420 of pipe that some other process will wait on for EOF. (So as it would
421 be open, the wait would be forever. */
422
423 msg.msg_control = control.control;
424 msg.msg_controllen = sizeof(control.control);
425 /* We're a connected socket so we don't need a destination */
426 msg.msg_name = NULL;
427 msg.msg_namelen = 0;
428 msg.msg_iov = vec;
808ad2d0 429 msg.msg_iovlen = 1;
bf357333
NC
430
431 cmptr = CMSG_FIRSTHDR(&msg);
432 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
433 cmptr->cmsg_level = SOL_SOCKET;
434 cmptr->cmsg_type = SCM_RIGHTS;
435 *((int *)CMSG_DATA(cmptr)) = 1;
436
437 vec[0].iov_base = (void*)&sv;
438 vec[0].iov_len = sizeof(sv);
439 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
440
441 if(got < 0) {
bf357333 442 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
443 abort();
444 }
bf357333
NC
445 if(got < sizeof(sv)) {
446 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
447 abort();
448 }
449
808ad2d0
NC
450 /* Return protocol is
451 int: errno value
452 unsigned char: length of location string (0 for empty)
453 unsigned char*: string (not terminated)
454 */
455 vec[0].iov_base = (void*)&returned_errno;
456 vec[0].iov_len = sizeof(returned_errno);
457 vec[1].iov_base = buffer;
458 vec[1].iov_len = 1;
459
460 got = readv(sock, vec, 2);
41e4abd8
NC
461
462 if(got < 0) {
463 perror("Debug leaking scalars parent read failed");
808ad2d0 464 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
465 abort();
466 }
808ad2d0 467 if(got < sizeof(returned_errno) + 1) {
41e4abd8 468 perror("Debug leaking scalars parent short read");
808ad2d0 469 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
470 abort();
471 }
472
808ad2d0
NC
473 if (*buffer) {
474 got = read(sock, buffer + 1, *buffer);
475 if(got < 0) {
476 perror("Debug leaking scalars parent read 2 failed");
477 PerlIO_flush(PerlIO_stderr());
478 abort();
479 }
480
481 if(got < *buffer) {
482 perror("Debug leaking scalars parent short read 2");
483 PerlIO_flush(PerlIO_stderr());
484 abort();
485 }
486 }
487
488 if (returned_errno || *buffer) {
489 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
490 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
491 returned_errno, strerror(returned_errno));
41e4abd8
NC
492 }
493}
494#endif
495
62375a60 496/*
954c1994
GS
497=for apidoc perl_destruct
498
499Shuts down a Perl interpreter. See L<perlembed>.
500
501=cut
502*/
503
31d77e54 504int
0cb96387 505perl_destruct(pTHXx)
79072805 506{
27da23d5 507 dVAR;
7c474504 508 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 509 HV *hv;
2aa47728 510#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
511 pid_t child;
512#endif
8990e307 513
9d4ba2ae
AL
514 PERL_UNUSED_ARG(my_perl);
515
7766f137
GS
516 /* wait for all pseudo-forked children to finish */
517 PERL_WAIT_FOR_CHILDREN;
518
3280af22 519 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
520#ifdef DEBUGGING
521 {
9d4ba2ae
AL
522 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
523 if (s) {
e1ec3a88 524 const int i = atoi(s);
5f05dabc
PP
525 if (destruct_level < i)
526 destruct_level = i;
527 }
4633a7c4
LW
528 }
529#endif
530
27da23d5 531 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
532 dJMPENV;
533 int x = 0;
534
535 JMPENV_PUSH(x);
1b6737cc 536 PERL_UNUSED_VAR(x);
f3faeb53
AB
537 if (PL_endav && !PL_minus_c)
538 call_list(PL_scopestack_ix, PL_endav);
539 JMPENV_POP;
26f423df 540 }
f3faeb53 541 LEAVE;
a0d0e21e
LW
542 FREETMPS;
543
e00b64d4 544 /* Need to flush since END blocks can produce output */
f13a2bc0 545 my_fflush_all();
e00b64d4 546
62375a60
NIS
547 if (CALL_FPTR(PL_threadhook)(aTHX)) {
548 /* Threads hook has vetoed further cleanup */
b47cad08 549 return STATUS_NATIVE_EXPORT;
62375a60
NIS
550 }
551
2aa47728
NC
552#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
553 if (destruct_level != 0) {
554 /* Fork here to create a child. Our child's job is to preserve the
555 state of scalars prior to destruction, so that we can instruct it
556 to dump any scalars that we later find have leaked.
557 There's no subtlety in this code - it assumes POSIX, and it doesn't
558 fail gracefully */
559 int fd[2];
560
561 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
562 perror("Debug leaking scalars socketpair failed");
563 abort();
564 }
565
566 child = fork();
567 if(child == -1) {
568 perror("Debug leaking scalars fork failed");
569 abort();
570 }
571 if (!child) {
572 /* We are the child */
3125a5a4
NC
573 const int sock = fd[1];
574 const int debug_fd = PerlIO_fileno(Perl_debug_log);
575 int f;
808ad2d0
NC
576 const char *where;
577 /* Our success message is an integer 0, and a char 0 */
578 static const char success[sizeof(int) + 1];
3125a5a4 579
2aa47728 580 close(fd[0]);
2aa47728 581
3125a5a4
NC
582 /* We need to close all other file descriptors otherwise we end up
583 with interesting hangs, where the parent closes its end of a
584 pipe, and sits waiting for (another) child to terminate. Only
585 that child never terminates, because it never gets EOF, because
bf357333
NC
586 we also have the far end of the pipe open. We even need to
587 close the debugging fd, because sometimes it happens to be one
588 end of a pipe, and a process is waiting on the other end for
589 EOF. Normally it would be closed at some point earlier in
590 destruction, but if we happen to cause the pipe to remain open,
591 EOF never occurs, and we get an infinite hang. Hence all the
592 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
593
594 f = sysconf(_SC_OPEN_MAX);
595 if(f < 0) {
808ad2d0
NC
596 where = "sysconf failed";
597 goto abort;
3125a5a4
NC
598 }
599 while (f--) {
600 if (f == sock)
601 continue;
3125a5a4
NC
602 close(f);
603 }
604
2aa47728
NC
605 while (1) {
606 SV *target;
bf357333
NC
607 union control_un control;
608 struct msghdr msg;
609 struct iovec vec[1];
610 struct cmsghdr *cmptr;
611 ssize_t got;
612 int got_fd;
613
614 msg.msg_control = control.control;
615 msg.msg_controllen = sizeof(control.control);
616 /* We're a connected socket so we don't need a source */
617 msg.msg_name = NULL;
618 msg.msg_namelen = 0;
619 msg.msg_iov = vec;
620 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
621
622 vec[0].iov_base = (void*)&target;
623 vec[0].iov_len = sizeof(target);
624
625 got = recvmsg(sock, &msg, 0);
2aa47728
NC
626
627 if(got == 0)
628 break;
629 if(got < 0) {
808ad2d0
NC
630 where = "recv failed";
631 goto abort;
2aa47728
NC
632 }
633 if(got < sizeof(target)) {
808ad2d0
NC
634 where = "short recv";
635 goto abort;
2aa47728 636 }
bf357333 637
808ad2d0
NC
638 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
639 where = "no cmsg";
640 goto abort;
641 }
642 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
643 where = "wrong cmsg_len";
644 goto abort;
645 }
646 if(cmptr->cmsg_level != SOL_SOCKET) {
647 where = "wrong cmsg_level";
648 goto abort;
649 }
650 if(cmptr->cmsg_type != SCM_RIGHTS) {
651 where = "wrong cmsg_type";
652 goto abort;
653 }
bf357333
NC
654
655 got_fd = *(int*)CMSG_DATA(cmptr);
656 /* For our last little bit of trickery, put the file descriptor
657 back into Perl_debug_log, as if we never actually closed it
658 */
808ad2d0
NC
659 if(got_fd != debug_fd) {
660 if (dup2(got_fd, debug_fd) == -1) {
661 where = "dup2";
662 goto abort;
663 }
664 }
2aa47728 665 sv_dump(target);
bf357333 666
2aa47728
NC
667 PerlIO_flush(Perl_debug_log);
668
808ad2d0 669 got = write(sock, &success, sizeof(success));
2aa47728
NC
670
671 if(got < 0) {
808ad2d0
NC
672 where = "write failed";
673 goto abort;
2aa47728 674 }
808ad2d0
NC
675 if(got < sizeof(success)) {
676 where = "short write";
677 goto abort;
2aa47728
NC
678 }
679 }
680 _exit(0);
808ad2d0
NC
681 abort:
682 {
683 int send_errno = errno;
684 unsigned char length = (unsigned char) strlen(where);
685 struct iovec failure[3] = {
686 {(void*)&send_errno, sizeof(send_errno)},
687 {&length, 1},
688 {(void*)where, length}
689 };
690 int got = writev(sock, failure, 3);
691 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
692 in the parent if we try to read from the socketpair after the
693 child has exited, even if there was data to read.
694 So sleep a bit to give the parent a fighting chance of
695 reading the data. */
696 sleep(2);
697 _exit((got == -1) ? errno : 0);
698 }
bf357333 699 /* End of child. */
2aa47728 700 }
41e4abd8 701 PL_dumper_fd = fd[0];
2aa47728
NC
702 close(fd[1]);
703 }
704#endif
705
ff0cee69
PP
706 /* We must account for everything. */
707
708 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
709 /* Do this now, because destroying ops can cause new SVs to be generated
710 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
711 PL_curcop to point to a valid op from which the filename structure
712 member is copied. */
713 PL_curcop = &PL_compiling;
3280af22 714 if (PL_main_root) {
4e380990
DM
715 /* ensure comppad/curpad to refer to main's pad */
716 if (CvPADLIST(PL_main_cv)) {
717 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
718 }
3280af22
NIS
719 op_free(PL_main_root);
720 PL_main_root = Nullop;
a0d0e21e 721 }
3280af22
NIS
722 PL_main_start = Nullop;
723 SvREFCNT_dec(PL_main_cv);
724 PL_main_cv = Nullcv;
24d3c518 725 PL_dirty = TRUE;
ff0cee69 726
13621cfb
NIS
727 /* Tell PerlIO we are about to tear things apart in case
728 we have layers which are using resources that should
729 be cleaned up now.
730 */
731
732 PerlIO_destruct(aTHX);
733
3280af22 734 if (PL_sv_objcount) {
a0d0e21e
LW
735 /*
736 * Try to destruct global references. We do this first so that the
737 * destructors and destructees still exist. Some sv's might remain.
738 * Non-referenced objects are on their own.
739 */
a0d0e21e 740 sv_clean_objs();
bf9cdc68 741 PL_sv_objcount = 0;
8990e307
LW
742 }
743
5cd24f17 744 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
745 SvREFCNT_dec(PL_warnhook);
746 PL_warnhook = Nullsv;
747 SvREFCNT_dec(PL_diehook);
748 PL_diehook = Nullsv;
5cd24f17 749
4b556e6c 750 /* call exit list functions */
3280af22 751 while (PL_exitlistlen-- > 0)
acfe0abc 752 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 753
3280af22 754 Safefree(PL_exitlist);
4b556e6c 755
1c4916e5
CB
756 PL_exitlist = NULL;
757 PL_exitlistlen = 0;
758
a0d0e21e 759 if (destruct_level == 0){
8990e307 760
a0d0e21e 761 DEBUG_P(debprofdump());
ac27b0f5 762
56a2bab7
NIS
763#if defined(PERLIO_LAYERS)
764 /* No more IO - including error messages ! */
765 PerlIO_cleanup(aTHX);
766#endif
767
a0d0e21e 768 /* The exit() function will do everything that needs doing. */
b47cad08 769 return STATUS_NATIVE_EXPORT;
a0d0e21e 770 }
5dd60ef7 771
551a8b83 772 /* jettison our possibly duplicated environment */
4b647fb0
DM
773 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
774 * so we certainly shouldn't free it here
775 */
2f42fcb0 776#ifndef PERL_MICRO
4b647fb0 777#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 778 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
779#ifdef USE_ITHREADS
780 /* only main thread can free environ[0] contents */
781 && PL_curinterp == aTHX
782#endif
783 )
784 {
551a8b83
JH
785 I32 i;
786
787 for (i = 0; environ[i]; i++)
4b420006 788 safesysfree(environ[i]);
0631ea03 789
4b420006
JH
790 /* Must use safesysfree() when working with environ. */
791 safesysfree(environ);
551a8b83
JH
792
793 environ = PL_origenviron;
794 }
795#endif
2f42fcb0 796#endif /* !PERL_MICRO */
551a8b83 797
804ffa60
DM
798 /* reset so print() ends up where we expect */
799 setdefout(Nullgv);
800
5f8cb046
DM
801#ifdef USE_ITHREADS
802 /* the syntax tree is shared between clones
803 * so op_free(PL_main_root) only ReREFCNT_dec's
804 * REGEXPs in the parent interpreter
805 * we need to manually ReREFCNT_dec for the clones
806 */
807 {
808 I32 i = AvFILLp(PL_regex_padav) + 1;
809 SV **ary = AvARRAY(PL_regex_padav);
810
811 while (i) {
35061a7e 812 SV *resv = ary[--i];
35061a7e
DM
813
814 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 815 /* this is PL_reg_curpm, already freed
35061a7e
DM
816 * flag is set in regexec.c:S_regtry
817 */
818 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 819 }
1cc8b4c5
AB
820 else if(SvREPADTMP(resv)) {
821 SvREPADTMP_off(resv);
822 }
a560f29b
NC
823 else if(SvIOKp(resv)) {
824 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
825 ReREFCNT_dec(re);
826 }
827 }
828 }
829 SvREFCNT_dec(PL_regex_padav);
830 PL_regex_padav = Nullav;
831 PL_regex_pad = NULL;
832#endif
833
081fc587
AB
834 SvREFCNT_dec((SV*) PL_stashcache);
835 PL_stashcache = NULL;
836
5f05dabc
PP
837 /* loosen bonds of global variables */
838
3280af22
NIS
839 if(PL_rsfp) {
840 (void)PerlIO_close(PL_rsfp);
841 PL_rsfp = Nullfp;
8ebc5c01
PP
842 }
843
844 /* Filters for program text */
3280af22
NIS
845 SvREFCNT_dec(PL_rsfp_filters);
846 PL_rsfp_filters = Nullav;
8ebc5c01
PP
847
848 /* switches */
3280af22
NIS
849 PL_preprocess = FALSE;
850 PL_minus_n = FALSE;
851 PL_minus_p = FALSE;
852 PL_minus_l = FALSE;
853 PL_minus_a = FALSE;
854 PL_minus_F = FALSE;
855 PL_doswitches = FALSE;
599cee73 856 PL_dowarn = G_WARN_OFF;
3280af22
NIS
857 PL_doextract = FALSE;
858 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
859 PL_unsafe = FALSE;
860
861 Safefree(PL_inplace);
862 PL_inplace = Nullch;
a7cb1f99 863 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
864
865 if (PL_e_script) {
866 SvREFCNT_dec(PL_e_script);
867 PL_e_script = Nullsv;
8ebc5c01
PP
868 }
869
bf9cdc68
RG
870 PL_perldb = 0;
871
8ebc5c01
PP
872 /* magical thingies */
873
7889fe52
NIS
874 SvREFCNT_dec(PL_ofs_sv); /* $, */
875 PL_ofs_sv = Nullsv;
5f05dabc 876
7889fe52
NIS
877 SvREFCNT_dec(PL_ors_sv); /* $\ */
878 PL_ors_sv = Nullsv;
8ebc5c01 879
3280af22
NIS
880 SvREFCNT_dec(PL_rs); /* $/ */
881 PL_rs = Nullsv;
dc92893f 882
d33b2eba
GS
883 PL_multiline = 0; /* $* */
884 Safefree(PL_osname); /* $^O */
885 PL_osname = Nullch;
5f05dabc 886
3280af22
NIS
887 SvREFCNT_dec(PL_statname);
888 PL_statname = Nullsv;
889 PL_statgv = Nullgv;
5f05dabc 890
8ebc5c01
PP
891 /* defgv, aka *_ should be taken care of elsewhere */
892
8ebc5c01 893 /* clean up after study() */
3280af22
NIS
894 SvREFCNT_dec(PL_lastscream);
895 PL_lastscream = Nullsv;
896 Safefree(PL_screamfirst);
897 PL_screamfirst = 0;
898 Safefree(PL_screamnext);
899 PL_screamnext = 0;
8ebc5c01 900
7d5ea4e7
GS
901 /* float buffer */
902 Safefree(PL_efloatbuf);
903 PL_efloatbuf = Nullch;
904 PL_efloatsize = 0;
905
8ebc5c01 906 /* startup and shutdown function lists */
3280af22 907 SvREFCNT_dec(PL_beginav);
5a837c8f 908 SvREFCNT_dec(PL_beginav_save);
3280af22 909 SvREFCNT_dec(PL_endav);
7d30b5c4 910 SvREFCNT_dec(PL_checkav);
ece599bd 911 SvREFCNT_dec(PL_checkav_save);
3280af22
NIS
912 SvREFCNT_dec(PL_initav);
913 PL_beginav = Nullav;
5a837c8f 914 PL_beginav_save = Nullav;
3280af22 915 PL_endav = Nullav;
7d30b5c4 916 PL_checkav = Nullav;
ece599bd 917 PL_checkav_save = Nullav;
3280af22 918 PL_initav = Nullav;
5618dfe8 919
8ebc5c01 920 /* shortcuts just get cleared */
3280af22 921 PL_envgv = Nullgv;
3280af22
NIS
922 PL_incgv = Nullgv;
923 PL_hintgv = Nullgv;
924 PL_errgv = Nullgv;
925 PL_argvgv = Nullgv;
926 PL_argvoutgv = Nullgv;
927 PL_stdingv = Nullgv;
bf49b057 928 PL_stderrgv = Nullgv;
3280af22
NIS
929 PL_last_in_gv = Nullgv;
930 PL_replgv = Nullgv;
bf9cdc68
RG
931 PL_DBgv = Nullgv;
932 PL_DBline = Nullgv;
933 PL_DBsub = Nullgv;
934 PL_DBsingle = Nullsv;
935 PL_DBtrace = Nullsv;
936 PL_DBsignal = Nullsv;
937 PL_DBassertion = Nullsv;
938 PL_DBcv = Nullcv;
939 PL_dbargs = Nullav;
5c831c24 940 PL_debstash = Nullhv;
8ebc5c01 941
7a1c5554
GS
942 SvREFCNT_dec(PL_argvout_stack);
943 PL_argvout_stack = Nullav;
8ebc5c01 944
5c831c24
GS
945 SvREFCNT_dec(PL_modglobal);
946 PL_modglobal = Nullhv;
947 SvREFCNT_dec(PL_preambleav);
948 PL_preambleav = Nullav;
949 SvREFCNT_dec(PL_subname);
950 PL_subname = Nullsv;
951 SvREFCNT_dec(PL_linestr);
952 PL_linestr = Nullsv;
953 SvREFCNT_dec(PL_pidstatus);
954 PL_pidstatus = Nullhv;
955 SvREFCNT_dec(PL_toptarget);
956 PL_toptarget = Nullsv;
957 SvREFCNT_dec(PL_bodytarget);
958 PL_bodytarget = Nullsv;
959 PL_formtarget = Nullsv;
960
d33b2eba 961 /* free locale stuff */
b9582b6a 962#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
963 Safefree(PL_collation_name);
964 PL_collation_name = Nullch;
b9582b6a 965#endif
d33b2eba 966
b9582b6a 967#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
968 Safefree(PL_numeric_name);
969 PL_numeric_name = Nullch;
a453c169 970 SvREFCNT_dec(PL_numeric_radix_sv);
bf9cdc68 971 PL_numeric_radix_sv = Nullsv;
b9582b6a 972#endif
d33b2eba 973
5c831c24
GS
974 /* clear utf8 character classes */
975 SvREFCNT_dec(PL_utf8_alnum);
976 SvREFCNT_dec(PL_utf8_alnumc);
977 SvREFCNT_dec(PL_utf8_ascii);
978 SvREFCNT_dec(PL_utf8_alpha);
979 SvREFCNT_dec(PL_utf8_space);
980 SvREFCNT_dec(PL_utf8_cntrl);
981 SvREFCNT_dec(PL_utf8_graph);
982 SvREFCNT_dec(PL_utf8_digit);
983 SvREFCNT_dec(PL_utf8_upper);
984 SvREFCNT_dec(PL_utf8_lower);
985 SvREFCNT_dec(PL_utf8_print);
986 SvREFCNT_dec(PL_utf8_punct);
987 SvREFCNT_dec(PL_utf8_xdigit);
988 SvREFCNT_dec(PL_utf8_mark);
989 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 990 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 991 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 992 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
993 SvREFCNT_dec(PL_utf8_idstart);
994 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS
995 PL_utf8_alnum = Nullsv;
996 PL_utf8_alnumc = Nullsv;
997 PL_utf8_ascii = Nullsv;
998 PL_utf8_alpha = Nullsv;
999 PL_utf8_space = Nullsv;
1000 PL_utf8_cntrl = Nullsv;
1001 PL_utf8_graph = Nullsv;
1002 PL_utf8_digit = Nullsv;
1003 PL_utf8_upper = Nullsv;
1004 PL_utf8_lower = Nullsv;
1005 PL_utf8_print = Nullsv;
1006 PL_utf8_punct = Nullsv;
1007 PL_utf8_xdigit = Nullsv;
1008 PL_utf8_mark = Nullsv;
1009 PL_utf8_toupper = Nullsv;
1010 PL_utf8_totitle = Nullsv;
1011 PL_utf8_tolower = Nullsv;
b4e400f9 1012 PL_utf8_tofold = Nullsv;
82686b01
JH
1013 PL_utf8_idstart = Nullsv;
1014 PL_utf8_idcont = Nullsv;
5c831c24 1015
971a9dd3
GS
1016 if (!specialWARN(PL_compiling.cop_warnings))
1017 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 1018 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
1019 if (!specialCopIO(PL_compiling.cop_io))
1020 SvREFCNT_dec(PL_compiling.cop_io);
1021 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS
1022 CopFILE_free(&PL_compiling);
1023 CopSTASH_free(&PL_compiling);
5c831c24 1024
a0d0e21e 1025 /* Prepare to destruct main symbol table. */
5f05dabc 1026
3280af22
NIS
1027 hv = PL_defstash;
1028 PL_defstash = 0;
a0d0e21e 1029 SvREFCNT_dec(hv);
5c831c24
GS
1030 SvREFCNT_dec(PL_curstname);
1031 PL_curstname = Nullsv;
a0d0e21e 1032
5a844595
GS
1033 /* clear queued errors */
1034 SvREFCNT_dec(PL_errors);
1035 PL_errors = Nullsv;
1036
a0d0e21e 1037 FREETMPS;
0453d815 1038 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1039 if (PL_scopestack_ix != 0)
9014280d 1040 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1041 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1042 (long)PL_scopestack_ix);
1043 if (PL_savestack_ix != 0)
9014280d 1044 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1045 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1046 (long)PL_savestack_ix);
1047 if (PL_tmps_floor != -1)
9014280d 1048 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1049 (long)PL_tmps_floor + 1);
a0d0e21e 1050 if (cxstack_ix != -1)
9014280d 1051 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1052 (long)cxstack_ix + 1);
a0d0e21e 1053 }
8990e307
LW
1054
1055 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1056 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1057 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1058
1059 /* the 2 is for PL_fdpid and PL_strtab */
1060 while (PL_sv_count > 2 && sv_clean_all())
1061 ;
1062
d33b2eba
GS
1063 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1064 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1065 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1066 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1067
d4777f27
GS
1068 AvREAL_off(PL_fdpid); /* no surviving entries */
1069 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
1070 PL_fdpid = Nullav;
1071
6c644e78
GS
1072#ifdef HAVE_INTERP_INTERN
1073 sys_intern_clear();
1074#endif
1075
6e72f9df
PP
1076 /* Destruct the global string table. */
1077 {
1078 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1079 * so that sv_free() won't fail on them.
80459961
NC
1080 * Now that the global string table is using a single hunk of memory
1081 * for both HE and HEK, we either need to explicitly unshare it the
1082 * correct way, or actually free things here.
6e72f9df 1083 */
80459961
NC
1084 I32 riter = 0;
1085 const I32 max = HvMAX(PL_strtab);
1086 HE **array = HvARRAY(PL_strtab);
1087 HE *hent = array[0];
1088
6e72f9df 1089 for (;;) {
0453d815 1090 if (hent && ckWARN_d(WARN_INTERNAL)) {
80459961 1091 HE *next = HeNEXT(hent);
9014280d 1092 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1093 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 1094 HeVAL(hent) - Nullsv, HeKEY(hent));
80459961
NC
1095 Safefree(hent);
1096 hent = next;
6e72f9df
PP
1097 }
1098 if (!hent) {
1099 if (++riter > max)
1100 break;
1101 hent = array[riter];
1102 }
1103 }
80459961
NC
1104
1105 Safefree(array);
1106 HvARRAY(PL_strtab) = 0;
1107 HvTOTALKEYS(PL_strtab) = 0;
1108 HvFILL(PL_strtab) = 0;
6e72f9df 1109 }
3280af22 1110 SvREFCNT_dec(PL_strtab);
6e72f9df 1111
e652bb2f 1112#ifdef USE_ITHREADS
c21d1a0f 1113 /* free the pointer tables used for cloning */
a0739874 1114 ptr_table_free(PL_ptr_table);
bf9cdc68 1115 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1116#endif
a0739874 1117
d33b2eba
GS
1118 /* free special SVs */
1119
1120 SvREFCNT(&PL_sv_yes) = 0;
1121 sv_clear(&PL_sv_yes);
1122 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1123 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1124
1125 SvREFCNT(&PL_sv_no) = 0;
1126 sv_clear(&PL_sv_no);
1127 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1128 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1129
9f375a43
DM
1130 {
1131 int i;
1132 for (i=0; i<=2; i++) {
1133 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1134 sv_clear(PERL_DEBUG_PAD(i));
1135 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1136 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1137 }
1138 }
1139
0453d815 1140 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1141 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1142
eba0f806
DM
1143#ifdef DEBUG_LEAKING_SCALARS
1144 if (PL_sv_count != 0) {
1145 SV* sva;
1146 SV* sv;
1147 register SV* svend;
1148
1149 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1150 svend = &sva[SvREFCNT(sva)];
1151 for (sv = sva + 1; sv < svend; ++sv) {
1152 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1153 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1154 " flags=0x%"UVxf
fd0854ff
DM
1155 " refcnt=%"UVuf pTHX__FORMAT "\n"
1156 "\tallocated at %s:%d %s %s%s\n",
1157 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1158 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1159 sv->sv_debug_line,
1160 sv->sv_debug_inpad ? "for" : "by",
1161 sv->sv_debug_optype ?
1162 PL_op_name[sv->sv_debug_optype]: "(none)",
1163 sv->sv_debug_cloned ? " (cloned)" : ""
1164 );
2aa47728 1165#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1166 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1167#endif
eba0f806
DM
1168 }
1169 }
1170 }
1171 }
2aa47728
NC
1172#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1173 {
1174 int status;
1175 fd_set rset;
1176 /* Wait for up to 4 seconds for child to terminate.
1177 This seems to be the least effort way of timing out on reaping
1178 its exit status. */
1179 struct timeval waitfor = {4, 0};
41e4abd8 1180 int sock = PL_dumper_fd;
2aa47728
NC
1181
1182 shutdown(sock, 1);
1183 FD_ZERO(&rset);
1184 FD_SET(sock, &rset);
1185 select(sock + 1, &rset, NULL, NULL, &waitfor);
1186 waitpid(child, &status, WNOHANG);
1187 close(sock);
1188 }
1189#endif
eba0f806 1190#endif
bf9cdc68 1191 PL_sv_count = 0;
eba0f806
DM
1192
1193
56a2bab7 1194#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1195 /* No more IO - including error messages ! */
1196 PerlIO_cleanup(aTHX);
1197#endif
1198
9f4bd222
NIS
1199 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1200 as currently layers use it rather than Nullsv as a marker
1201 for no arg - and will try and SvREFCNT_dec it.
1202 */
1203 SvREFCNT(&PL_sv_undef) = 0;
1204 SvREADONLY_off(&PL_sv_undef);
1205
3280af22 1206 Safefree(PL_origfilename);
bf9cdc68 1207 PL_origfilename = Nullch;
3280af22 1208 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1209 PL_reg_start_tmp = (char**)NULL;
1210 PL_reg_start_tmpl = 0;
5c5e4c24
IZ
1211 if (PL_reg_curpm)
1212 Safefree(PL_reg_curpm);
82ba1be6 1213 Safefree(PL_reg_poscache);
dd28f7bb 1214 free_tied_hv_pool();
3280af22 1215 Safefree(PL_op_mask);
cf36064f 1216 Safefree(PL_psig_ptr);
bf9cdc68 1217 PL_psig_ptr = (SV**)NULL;
cf36064f 1218 Safefree(PL_psig_name);
bf9cdc68 1219 PL_psig_name = (SV**)NULL;
2c2666fc 1220 Safefree(PL_bitcount);
bf9cdc68 1221 PL_bitcount = Nullch;
ce08f86c 1222 Safefree(PL_psig_pend);
bf9cdc68
RG
1223 PL_psig_pend = (int*)NULL;
1224 PL_formfeed = Nullsv;
6e72f9df 1225 nuke_stacks();
bf9cdc68
RG
1226 PL_tainting = FALSE;
1227 PL_taint_warn = FALSE;
3280af22 1228 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1229 PL_debug = 0;
ac27b0f5 1230
a0d0e21e 1231 DEBUG_P(debprofdump());
d33b2eba 1232
e5dd39fc 1233#ifdef USE_REENTRANT_API
10bc17b6 1234 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1235#endif
1236
612f20c3
GS
1237 sv_free_arenas();
1238
fc36a67e
PP
1239 /* As the absolutely last thing, free the non-arena SV for mess() */
1240
3280af22 1241 if (PL_mess_sv) {
f350b448
NC
1242 /* we know that type == SVt_PVMG */
1243
9c63abab 1244 /* it could have accumulated taint magic */
f350b448
NC
1245 MAGIC* mg;
1246 MAGIC* moremagic;
1247 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1248 moremagic = mg->mg_moremagic;
1249 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1250 && mg->mg_len >= 0)
1251 Safefree(mg->mg_ptr);
1252 Safefree(mg);
9c63abab 1253 }
f350b448 1254
fc36a67e 1255 /* we know that type >= SVt_PV */
8bd4d4c5 1256 SvPV_free(PL_mess_sv);
3280af22
NIS
1257 Safefree(SvANY(PL_mess_sv));
1258 Safefree(PL_mess_sv);
1259 PL_mess_sv = Nullsv;
fc36a67e 1260 }
31d77e54 1261 return STATUS_NATIVE_EXPORT;
79072805
LW
1262}
1263
954c1994
GS
1264/*
1265=for apidoc perl_free
1266
1267Releases a Perl interpreter. See L<perlembed>.
1268
1269=cut
1270*/
1271
79072805 1272void
0cb96387 1273perl_free(pTHXx)
79072805 1274{
acfe0abc 1275#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1276# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
1277# ifdef NETWARE
1278 void *host = nw_internal_host;
1279# else
1280 void *host = w32_internal_host;
1281# endif
ce3e5b80 1282 PerlMem_free(aTHXx);
acfe0abc 1283# ifdef NETWARE
011f1a1a 1284 nw_delete_internal_host(host);
acfe0abc
GS
1285# else
1286 win32_delete_internal_host(host);
1287# endif
1c0ca838
GS
1288# else
1289 PerlMem_free(aTHXx);
1290# endif
acfe0abc
GS
1291#else
1292 PerlMem_free(aTHXx);
76e3520e 1293#endif
79072805
LW
1294}
1295
aebd1ac7
GA
1296#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
1297/* provide destructors to clean up the thread key when libperl is unloaded */
1298#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1299
110d3f98 1300#if defined(__hpux) && __ux_version > 1020 && !defined(__GNUC__)
aebd1ac7
GA
1301#pragma fini "perl_fini"
1302#endif
1303
0dbb1585
AL
1304static void
1305#if defined(__GNUC__)
1306__attribute__((destructor))
aebd1ac7 1307#endif
de009b76 1308perl_fini(void)
aebd1ac7 1309{
27da23d5 1310 dVAR;
aebd1ac7
GA
1311 if (PL_curinterp)
1312 FREE_THREAD_KEY;
1313}
1314
1315#endif /* WIN32 */
1316#endif /* THREADS */
1317
4b556e6c 1318void
864dbfa3 1319Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1320{
3280af22
NIS
1321 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1322 PL_exitlist[PL_exitlistlen].fn = fn;
1323 PL_exitlist[PL_exitlistlen].ptr = ptr;
1324 ++PL_exitlistlen;
4b556e6c
JD
1325}
1326
56cf6df8
RGS
1327#ifdef HAS_PROCSELFEXE
1328/* This is a function so that we don't hold on to MAXPATHLEN
1329 bytes of stack longer than necessary
1330 */
1331STATIC void
e1ec3a88 1332S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1333{
1334 char buf[MAXPATHLEN];
1335 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1336
1337 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1338 includes a spurious NUL which will cause $^X to fail in system
1339 or backticks (this will prevent extensions from being built and
1340 many tests from working). readlink is not meant to add a NUL.
1341 Normal readlink works fine.
1342 */
1343 if (len > 0 && buf[len-1] == '\0') {
1344 len--;
1345 }
1346
1347 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1348 returning the text "unknown" from the readlink rather than the path
1349 to the executable (or returning an error from the readlink). Any valid
1350 path has a '/' in it somewhere, so use that to validate the result.
1351 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1352 */
1353 if (len > 0 && memchr(buf, '/', len)) {
1354 sv_setpvn(sv,buf,len);
1355 }
1356 else {
1357 sv_setpv(sv,arg0);
1358 }
1359}
1360#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1361
1362STATIC void
1363S_set_caret_X(pTHX) {
1364 GV* tmpgv = gv_fetchpv("\030",TRUE, SVt_PV); /* $^X */
1365 if (tmpgv) {
1366#ifdef HAS_PROCSELFEXE
1367 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1368#else
1369#ifdef OS2
c69033f2 1370 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1371#else
c69033f2 1372 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1373#endif
1374#endif
1375 }
1376}
1377
954c1994
GS
1378/*
1379=for apidoc perl_parse
1380
1381Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1382
1383=cut
1384*/
1385
79072805 1386int
0cb96387 1387perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1388{
27da23d5 1389 dVAR;
6224f72b 1390 I32 oldscope;
6224f72b 1391 int ret;
db36c5a1 1392 dJMPENV;
8d063cd8 1393
9d4ba2ae
AL
1394 PERL_UNUSED_VAR(my_perl);
1395
a687059c
LW
1396#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1397#ifdef IAMSUID
1398#undef IAMSUID
cea2e8a9 1399 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1400setuid perl scripts securely.\n");
ae3f3efd 1401#endif /* IAMSUID */
a687059c
LW
1402#endif
1403
b0891165
JH
1404#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1405 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1406 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1407 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1408 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1409 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1410 if (!PL_rehash_seed_set)
1411 PL_rehash_seed = get_hash_seed();
b0891165 1412 {
9d4ba2ae 1413 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1414
1b6737cc
AL
1415 if (s && (atoi(s) == 1))
1416 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1417 }
1418#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1419
3280af22 1420 PL_origargc = argc;
e2975953 1421 PL_origargv = argv;
a0d0e21e 1422
54bfe034 1423 {
3cb9023d
JH
1424 /* Set PL_origalen be the sum of the contiguous argv[]
1425 * elements plus the size of the env in case that it is
e9137a8e 1426 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1427 * as the maximum modifiable length of $0. In the worst case
1428 * the area we are able to modify is limited to the size of
43c32782 1429 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1430 * --jhi */
e1ec3a88 1431 const char *s = NULL;
54bfe034 1432 int i;
1b6737cc 1433 const UV mask =
7d8e7db3 1434 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1435 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1436 const UV aligned =
43c32782
JH
1437 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1438
1439 /* See if all the arguments are contiguous in memory. Note
1440 * that 'contiguous' is a loose term because some platforms
1441 * align the argv[] and the envp[]. If the arguments look
1442 * like non-aligned, assume that they are 'strictly' or
1443 * 'traditionally' contiguous. If the arguments look like
1444 * aligned, we just check that they are within aligned
1445 * PTRSIZE bytes. As long as no system has something bizarre
1446 * like the argv[] interleaved with some other data, we are
1447 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1448 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1449 while (*s) s++;
1450 for (i = 1; i < PL_origargc; i++) {
1451 if ((PL_origargv[i] == s + 1
43c32782 1452#ifdef OS2
c8941eeb 1453 || PL_origargv[i] == s + 2
43c32782 1454#endif
c8941eeb
JH
1455 )
1456 ||
1457 (aligned &&
1458 (PL_origargv[i] > s &&
1459 PL_origargv[i] <=
1460 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1461 )
1462 {
1463 s = PL_origargv[i];
1464 while (*s) s++;
1465 }
1466 else
1467 break;
54bfe034 1468 }
54bfe034 1469 }
3cb9023d 1470 /* Can we grab env area too to be used as the area for $0? */
43c32782
JH
1471 if (PL_origenviron) {
1472 if ((PL_origenviron[0] == s + 1
1473#ifdef OS2
1474 || (PL_origenviron[0] == s + 9 && (s += 8))
1475#endif
1476 )
1477 ||
1478 (aligned &&
1479 (PL_origenviron[0] > s &&
1480 PL_origenviron[0] <=
1481 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1482 )
1483 {
1484#ifndef OS2
1485 s = PL_origenviron[0];
1486 while (*s) s++;
1487#endif
1488 my_setenv("NoNe SuCh", Nullch);
1489 /* Force copy of environment. */
1490 for (i = 1; PL_origenviron[i]; i++) {
1491 if (PL_origenviron[i] == s + 1
1492 ||
1493 (aligned &&
1494 (PL_origenviron[i] > s &&
1495 PL_origenviron[i] <=
1496 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1497 )
1498 {
1499 s = PL_origenviron[i];
1500 while (*s) s++;
1501 }
1502 else
1503 break;
54bfe034 1504 }
43c32782 1505 }
54bfe034 1506 }
284e1220 1507 PL_origalen = s - PL_origargv[0] + 1;
54bfe034
JH
1508 }
1509
3280af22 1510 if (PL_do_undump) {
a0d0e21e
LW
1511
1512 /* Come here if running an undumped a.out. */
1513
3280af22
NIS
1514 PL_origfilename = savepv(argv[0]);
1515 PL_do_undump = FALSE;
a0d0e21e 1516 cxstack_ix = -1; /* start label stack again */
748a9306 1517 init_ids();
b7975bdd
NC
1518 assert (!PL_tainted);
1519 TAINT;
1520 S_set_caret_X(aTHX);
1521 TAINT_NOT;
a0d0e21e
LW
1522 init_postdump_symbols(argc,argv,env);
1523 return 0;
1524 }
1525
3280af22 1526 if (PL_main_root) {
3280af22
NIS
1527 op_free(PL_main_root);
1528 PL_main_root = Nullop;
ff0cee69 1529 }
3280af22
NIS
1530 PL_main_start = Nullop;
1531 SvREFCNT_dec(PL_main_cv);
1532 PL_main_cv = Nullcv;
79072805 1533
3280af22
NIS
1534 time(&PL_basetime);
1535 oldscope = PL_scopestack_ix;
599cee73 1536 PL_dowarn = G_WARN_OFF;
f86702cc 1537
14dd3ad8 1538 JMPENV_PUSH(ret);
6224f72b 1539 switch (ret) {
312caa8e 1540 case 0:
14dd3ad8 1541 parse_body(env,xsinit);
7d30b5c4
GS
1542 if (PL_checkav)
1543 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1544 ret = 0;
1545 break;
6224f72b
GS
1546 case 1:
1547 STATUS_ALL_FAILURE;
1548 /* FALL THROUGH */
1549 case 2:
1550 /* my_exit() was called */
3280af22 1551 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1552 LEAVE;
1553 FREETMPS;
3280af22 1554 PL_curstash = PL_defstash;
7d30b5c4
GS
1555 if (PL_checkav)
1556 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1557 ret = STATUS_NATIVE_EXPORT;
1558 break;
6224f72b 1559 case 3:
bf49b057 1560 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1561 ret = 1;
1562 break;
6224f72b 1563 }
14dd3ad8
GS
1564 JMPENV_POP;
1565 return ret;
1566}
1567
312caa8e 1568STATIC void *
14dd3ad8 1569S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1570{
27da23d5 1571 dVAR;
312caa8e 1572 int argc = PL_origargc;
8f42b153 1573 char **argv = PL_origargv;
e1ec3a88 1574 const char *scriptname = NULL;
312caa8e 1575 VOL bool dosearch = FALSE;
e1ec3a88 1576 const char *validarg = "";
312caa8e
CS
1577 register SV *sv;
1578 register char *s;
e1ec3a88 1579 const char *cddir = Nullch;
ab019eaa 1580#ifdef USE_SITECUSTOMIZE
20ef40cf 1581 bool minus_f = FALSE;
ab019eaa 1582#endif
312caa8e 1583
ae3f3efd
PS
1584 PL_fdscript = -1;
1585 PL_suidscript = -1;
3280af22 1586 sv_setpvn(PL_linestr,"",0);
79cb57f6 1587 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
1588 SAVEFREESV(sv);
1589 init_main_stash();
54310121 1590
6224f72b
GS
1591 for (argc--,argv++; argc > 0; argc--,argv++) {
1592 if (argv[0][0] != '-' || !argv[0][1])
1593 break;
1594#ifdef DOSUID
1595 if (*validarg)
1596 validarg = " PHOOEY ";
1597 else
1598 validarg = argv[0];
ae3f3efd
PS
1599 /*
1600 * Can we rely on the kernel to start scripts with argv[1] set to
1601 * contain all #! line switches (the whole line)? (argv[0] is set to
1602 * the interpreter name, argv[2] to the script name; argv[3] and
1603 * above may contain other arguments.)
1604 */
13281fa4 1605#endif
6224f72b
GS
1606 s = argv[0]+1;
1607 reswitch:
1608 switch (*s) {
729a02f2 1609 case 'C':
1d5472a9
GS
1610#ifndef PERL_STRICT_CR
1611 case '\r':
1612#endif
6224f72b
GS
1613 case ' ':
1614 case '0':
1615 case 'F':
1616 case 'a':
1617 case 'c':
1618 case 'd':
1619 case 'D':
1620 case 'h':
1621 case 'i':
1622 case 'l':
1623 case 'M':
1624 case 'm':
1625 case 'n':
1626 case 'p':
1627 case 's':
1628 case 'u':
1629 case 'U':
1630 case 'v':
599cee73
PM
1631 case 'W':
1632 case 'X':
6224f72b 1633 case 'w':
06492da6 1634 case 'A':
155aba94 1635 if ((s = moreswitches(s)))
6224f72b
GS
1636 goto reswitch;
1637 break;
33b78306 1638
1dbad523 1639 case 't':
22f7c9c9 1640 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1641 if( !PL_tainting ) {
1642 PL_taint_warn = TRUE;
1643 PL_tainting = TRUE;
1644 }
1645 s++;
1646 goto reswitch;
6224f72b 1647 case 'T':
22f7c9c9 1648 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1649 PL_tainting = TRUE;
317ea90d 1650 PL_taint_warn = FALSE;
6224f72b
GS
1651 s++;
1652 goto reswitch;
f86702cc 1653
6224f72b 1654 case 'e':
bf4acbe4
GS
1655#ifdef MACOS_TRADITIONAL
1656 /* ignore -e for Dev:Pseudo argument */
1657 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1658 break;
bf4acbe4 1659#endif
ae3f3efd 1660 forbid_setid("-e");
3280af22 1661 if (!PL_e_script) {
79cb57f6 1662 PL_e_script = newSVpvn("",0);
0cb96387 1663 filter_add(read_e_script, NULL);
6224f72b
GS
1664 }
1665 if (*++s)
3280af22 1666 sv_catpv(PL_e_script, s);
6224f72b 1667 else if (argv[1]) {
3280af22 1668 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1669 argc--,argv++;
1670 }
1671 else
cea2e8a9 1672 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1673 sv_catpv(PL_e_script, "\n");
6224f72b 1674 break;
afe37c7d 1675
20ef40cf 1676 case 'f':
f5542d3a 1677#ifdef USE_SITECUSTOMIZE
20ef40cf 1678 minus_f = TRUE;
f5542d3a 1679#endif
20ef40cf
GA
1680 s++;
1681 goto reswitch;
1682
6224f72b
GS
1683 case 'I': /* -I handled both here and in moreswitches() */
1684 forbid_setid("-I");
1685 if (!*++s && (s=argv[1]) != Nullch) {
1686 argc--,argv++;
1687 }
6224f72b 1688 if (s && *s) {
0df16ed7
GS
1689 char *p;
1690 STRLEN len = strlen(s);
1691 p = savepvn(s, len);
88fe16b2 1692 incpush(p, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
1693 sv_catpvn(sv, "-I", 2);
1694 sv_catpvn(sv, p, len);
1695 sv_catpvn(sv, " ", 1);
6224f72b 1696 Safefree(p);
0df16ed7
GS
1697 }
1698 else
a67e862a 1699 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1700 break;
1701 case 'P':
1702 forbid_setid("-P");
3280af22 1703 PL_preprocess = TRUE;
6224f72b
GS
1704 s++;
1705 goto reswitch;
1706 case 'S':
1707 forbid_setid("-S");
1708 dosearch = TRUE;
1709 s++;
1710 goto reswitch;
1711 case 'V':
7edfd0ef
NC
1712 {
1713 SV *opts_prog;
1714
1715 if (!PL_preambleav)
1716 PL_preambleav = newAV();
1717 av_push(PL_preambleav,
1718 newSVpv("use Config;",0));
1719 if (*++s != ':') {
1720 STRLEN opts;
1721
1722 opts_prog = newSVpv("print Config::myconfig(),",0);
6224f72b 1723#ifdef VMS
7edfd0ef 1724 sv_catpv(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1725#else
7edfd0ef 1726 sv_catpv(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1727#endif
7edfd0ef 1728 opts = SvCUR(opts_prog);
efcaa95b 1729
7edfd0ef 1730 sv_catpv(opts_prog,"\" Compile-time options:");
6224f72b 1731# ifdef DEBUGGING
7edfd0ef 1732 sv_catpv(opts_prog," DEBUGGING");
6224f72b 1733# endif
6224f72b 1734# ifdef MULTIPLICITY
7edfd0ef 1735 sv_catpv(opts_prog," MULTIPLICITY");
6224f72b 1736# endif
4d1ff10f 1737# ifdef USE_5005THREADS
7edfd0ef 1738 sv_catpv(opts_prog," USE_5005THREADS");
b363f7ed 1739# endif
ac5e8965 1740# ifdef USE_ITHREADS
7edfd0ef 1741 sv_catpv(opts_prog," USE_ITHREADS");
ac5e8965 1742# endif
10cc9d2a 1743# ifdef USE_64_BIT_INT
7edfd0ef 1744 sv_catpv(opts_prog," USE_64_BIT_INT");
10cc9d2a
JH
1745# endif
1746# ifdef USE_64_BIT_ALL
7edfd0ef 1747 sv_catpv(opts_prog," USE_64_BIT_ALL");
ac5e8965
JH
1748# endif
1749# ifdef USE_LONG_DOUBLE
7edfd0ef 1750 sv_catpv(opts_prog," USE_LONG_DOUBLE");
ac5e8965 1751# endif
53430762 1752# ifdef USE_LARGE_FILES
7edfd0ef 1753 sv_catpv(opts_prog," USE_LARGE_FILES");
53430762 1754# endif
ac5e8965 1755# ifdef USE_SOCKS
7edfd0ef 1756 sv_catpv(opts_prog," USE_SOCKS");
ac5e8965 1757# endif
20ef40cf 1758# ifdef USE_SITECUSTOMIZE
7edfd0ef 1759 sv_catpv(opts_prog," USE_SITECUSTOMIZE");
20ef40cf 1760# endif
b363f7ed 1761# ifdef PERL_IMPLICIT_CONTEXT
7edfd0ef 1762 sv_catpv(opts_prog," PERL_IMPLICIT_CONTEXT");
b363f7ed
GS
1763# endif
1764# ifdef PERL_IMPLICIT_SYS
7edfd0ef 1765 sv_catpv(opts_prog," PERL_IMPLICIT_SYS");
b363f7ed 1766# endif
efcaa95b 1767
7edfd0ef
NC
1768 while (SvCUR(opts_prog) > opts+76) {
1769 /* find last space after "options: " and before col 76
1770 */
efcaa95b 1771
7edfd0ef
NC
1772 const char *space;
1773 char *pv = SvPV_nolen(opts_prog);
1774 const char c = pv[opts+76];
1775 pv[opts+76] = '\0';
1776 space = strrchr(pv+opts+26, ' ');
1777 pv[opts+76] = c;
1778 if (!space) break; /* "Can't happen" */
efcaa95b 1779
7edfd0ef 1780 /* break the line before that space */
efcaa95b 1781
7edfd0ef
NC
1782 opts = space - pv;
1783 sv_insert(opts_prog, opts, 0,
1784 "\\n ", 25);
1785 }
efcaa95b 1786
7edfd0ef 1787 sv_catpv(opts_prog,"\\n\",");
b363f7ed 1788
6224f72b 1789#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1790 if (LOCAL_PATCH_COUNT > 0) {
1791 int i;
1792 sv_catpv(opts_prog,
1793 "\" Locally applied patches:\\n\",");
1794 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1795 if (PL_localpatches[i])
1796 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1797 0, PL_localpatches[i], 0);
1798 }
6224f72b 1799 }
6224f72b 1800#endif
7edfd0ef
NC
1801 Perl_sv_catpvf(aTHX_ opts_prog,
1802 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1803#ifdef __DATE__
1804# ifdef __TIME__
7edfd0ef
NC
1805 Perl_sv_catpvf(aTHX_ opts_prog,
1806 ",\" Compiled at %s %s\\n\"",__DATE__,
1807 __TIME__);
6224f72b 1808# else
7edfd0ef
NC
1809 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1810 __DATE__);
6224f72b
GS
1811# endif
1812#endif
7edfd0ef
NC
1813 sv_catpv(opts_prog, "; $\"=\"\\n \"; "
1814 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1815 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1816#ifdef __CYGWIN__
7edfd0ef
NC
1817 sv_catpv(opts_prog,
1818 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1819#endif
7edfd0ef
NC
1820 sv_catpv(opts_prog,
1821 "print \" \\%ENV:\\n @env\\n\" if @env;"
1822 "print \" \\@INC:\\n @INC\\n\";");
1823 }
1824 else {
1825 ++s;
1826 opts_prog = Perl_newSVpvf(aTHX_
1827 "Config::config_vars(qw%c%s%c)",
1828 0, s, 0);
1829 s += strlen(s);
1830 }
1831 av_push(PL_preambleav, opts_prog);
1832 /* don't look for script or read stdin */
1833 scriptname = BIT_BUCKET;
1834 goto reswitch;
6224f72b 1835 }
6224f72b 1836 case 'x':
3280af22 1837 PL_doextract = TRUE;
6224f72b
GS
1838 s++;
1839 if (*s)
f4c556ac 1840 cddir = s;
6224f72b
GS
1841 break;
1842 case 0:
1843 break;
1844 case '-':
1845 if (!*++s || isSPACE(*s)) {
1846 argc--,argv++;
1847 goto switch_end;
1848 }
1849 /* catch use of gnu style long options */
1850 if (strEQ(s, "version")) {
dd374669 1851 s = (char *)"v";
6224f72b
GS
1852 goto reswitch;
1853 }
1854 if (strEQ(s, "help")) {
dd374669 1855 s = (char *)"h";
6224f72b
GS
1856 goto reswitch;
1857 }
1858 s--;
1859 /* FALL THROUGH */
1860 default:
cea2e8a9 1861 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1862 }
1863 }
6224f72b 1864 switch_end:
54310121 1865
f675dbe5
CB
1866 if (
1867#ifndef SECURE_INTERNAL_GETENV
1868 !PL_tainting &&
1869#endif
cf756827 1870 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1871 {
e1ec3a88 1872 const char *popt = s;
74288ac8
GS
1873 while (isSPACE(*s))
1874 s++;
317ea90d 1875 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1876 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1877 PL_tainting = TRUE;
317ea90d
MS
1878 PL_taint_warn = FALSE;
1879 }
74288ac8 1880 else {
cf756827 1881 char *popt_copy = Nullch;
74288ac8 1882 while (s && *s) {
4ea8f8fb 1883 char *d;
74288ac8
GS
1884 while (isSPACE(*s))
1885 s++;
1886 if (*s == '-') {
1887 s++;
1888 if (isSPACE(*s))
1889 continue;
1890 }
4ea8f8fb 1891 d = s;
74288ac8
GS
1892 if (!*s)
1893 break;
06492da6 1894 if (!strchr("DIMUdmtwA", *s))
cea2e8a9 1895 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1896 while (++s && *s) {
1897 if (isSPACE(*s)) {
cf756827
GS
1898 if (!popt_copy) {
1899 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1900 s = popt_copy + (s - popt);
1901 d = popt_copy + (d - popt);
1902 }
4ea8f8fb
MS
1903 *s++ = '\0';
1904 break;
1905 }
1906 }
1c4db469 1907 if (*d == 't') {
317ea90d
MS
1908 if( !PL_tainting ) {
1909 PL_taint_warn = TRUE;
1910 PL_tainting = TRUE;
1911 }
1c4db469
RGS
1912 } else {
1913 moreswitches(d);
1914 }
6224f72b 1915 }
6224f72b
GS
1916 }
1917 }
a0d0e21e 1918
20ef40cf
GA
1919#ifdef USE_SITECUSTOMIZE
1920 if (!minus_f) {
1921 if (!PL_preambleav)
1922 PL_preambleav = newAV();
1923 av_unshift(PL_preambleav, 1);
1924 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1925 }
1926#endif
1927
317ea90d
MS
1928 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1929 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1930 }
1931
6224f72b
GS
1932 if (!scriptname)
1933 scriptname = argv[0];
3280af22 1934 if (PL_e_script) {
6224f72b
GS
1935 argc++,argv--;
1936 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1937 }
1938 else if (scriptname == Nullch) {
1939#ifdef MSDOS
1940 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1941 moreswitches("h");
1942#endif
1943 scriptname = "-";
1944 }
1945
b7975bdd
NC
1946 /* Set $^X early so that it can be used for relocatable paths in @INC */
1947 assert (!PL_tainted);
1948 TAINT;
1949 S_set_caret_X(aTHX);
1950 TAINT_NOT;
6224f72b
GS
1951 init_perllib();
1952
c5cccb17 1953 open_script(scriptname,dosearch,sv);
6224f72b 1954
c5cccb17 1955 validate_suid(validarg, scriptname);
6224f72b 1956
64ca3a65 1957#ifndef PERL_MICRO
0b5b802d
GS
1958#if defined(SIGCHLD) || defined(SIGCLD)
1959 {
1960#ifndef SIGCHLD
1961# define SIGCHLD SIGCLD
1962#endif
1963 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1964 if (sigstate == SIG_IGN) {
1965 if (ckWARN(WARN_SIGNAL))
9014280d 1966 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
1967 "Can't ignore signal CHLD, forcing to default");
1968 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1969 }
1970 }
1971#endif
64ca3a65 1972#endif
0b5b802d 1973
bf4acbe4
GS
1974#ifdef MACOS_TRADITIONAL
1975 if (PL_doextract || gMacPerl_AlwaysExtract) {
1976#else
f4c556ac 1977 if (PL_doextract) {
bf4acbe4 1978#endif
6224f72b 1979 find_beginning();
dd374669 1980 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
f4c556ac
GS
1981 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1982
1983 }
6224f72b 1984
3280af22
NIS
1985 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1986 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1987 CvUNIQUE_on(PL_compcv);
1988
dd2155a4 1989 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 1990#ifdef USE_5005THREADS
533c011a
NIS
1991 CvOWNER(PL_compcv) = 0;
1992 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1993 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1994#endif /* USE_5005THREADS */
6224f72b 1995
0c4f7ff0 1996 boot_core_PerlIO();
6224f72b 1997 boot_core_UNIVERSAL();
09bef843 1998 boot_core_xsutils();
6224f72b
GS
1999
2000 if (xsinit)
acfe0abc 2001 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2002#ifndef PERL_MICRO
ed79a026 2003#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 2004 init_os_extras();
6224f72b 2005#endif
64ca3a65 2006#endif
6224f72b 2007
29209bc5 2008#ifdef USE_SOCKS
1b9c9cf5
DH
2009# ifdef HAS_SOCKS5_INIT
2010 socks5_init(argv[0]);
2011# else
29209bc5 2012 SOCKSinit(argv[0]);
1b9c9cf5 2013# endif
ac27b0f5 2014#endif
29209bc5 2015
6224f72b
GS
2016 init_predump_symbols();
2017 /* init_postdump_symbols not currently designed to be called */
2018 /* more than once (ENV isn't cleared first, for example) */
2019 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2020 if (!PL_do_undump)
6224f72b
GS
2021 init_postdump_symbols(argc,argv,env);
2022
27da23d5
JH
2023 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2024 * or explicitly in some platforms.
085a54d9 2025 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2026 * look like the user wants to use UTF-8. */
27da23d5
JH
2027#if defined(SYMBIAN)
2028 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2029#endif
06e66572
JH
2030 if (PL_unicode) {
2031 /* Requires init_predump_symbols(). */
a05d7ebb 2032 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2033 IO* io;
2034 PerlIO* fp;
2035 SV* sv;
2036
a05d7ebb 2037 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2038 * and the default open disciplines. */
a05d7ebb
JH
2039 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2040 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2041 (fp = IoIFP(io)))
2042 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2043 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2044 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2045 (fp = IoOFP(io)))
2046 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2047 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2048 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2049 (fp = IoOFP(io)))
2050 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2051 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2052 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
2053 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2054 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2055 if (in) {
2056 if (out)
2057 sv_setpvn(sv, ":utf8\0:utf8", 11);
2058 else
2059 sv_setpvn(sv, ":utf8\0", 6);
2060 }
2061 else if (out)
2062 sv_setpvn(sv, "\0:utf8", 6);
2063 SvSETMAGIC(sv);
2064 }
b310b053
JH
2065 }
2066 }
2067
4ffa73a3
JH
2068 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2069 if (strEQ(s, "unsafe"))
2070 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2071 else if (strEQ(s, "safe"))
2072 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2073 else
2074 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2075 }
2076
6224f72b
GS
2077 init_lexer();
2078
2079 /* now parse the script */
2080
93189314 2081 SETERRNO(0,SS_NORMAL);
3280af22 2082 PL_error_count = 0;
bf4acbe4
GS
2083#ifdef MACOS_TRADITIONAL
2084 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2085 if (PL_minus_c)
2086 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2087 else {
2088 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2089 MacPerl_MPWFileName(PL_origfilename));
2090 }
2091 }
2092#else
3280af22
NIS
2093 if (yyparse() || PL_error_count) {
2094 if (PL_minus_c)
cea2e8a9 2095 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2096 else {
cea2e8a9 2097 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2098 PL_origfilename);
6224f72b
GS
2099 }
2100 }
bf4acbe4 2101#endif
57843af0 2102 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2103 PL_curstash = PL_defstash;
2104 PL_preprocess = FALSE;
2105 if (PL_e_script) {
2106 SvREFCNT_dec(PL_e_script);
2107 PL_e_script = Nullsv;
6224f72b
GS
2108 }
2109
3280af22 2110 if (PL_do_undump)
6224f72b
GS
2111 my_unexec();
2112
57843af0
GS
2113 if (isWARN_ONCE) {
2114 SAVECOPFILE(PL_curcop);
2115 SAVECOPLINE(PL_curcop);
3280af22 2116 gv_check(PL_defstash);
57843af0 2117 }
6224f72b
GS
2118
2119 LEAVE;
2120 FREETMPS;
2121
2122#ifdef MYMALLOC
2123 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2124 dump_mstats("after compilation:");
2125#endif
2126
2127 ENTER;
3280af22 2128 PL_restartop = 0;
312caa8e 2129 return NULL;
6224f72b
GS
2130}
2131
954c1994
GS
2132/*
2133=for apidoc perl_run
2134
2135Tells a Perl interpreter to run. See L<perlembed>.
2136
2137=cut
2138*/
2139
6224f72b 2140int
0cb96387 2141perl_run(pTHXx)
6224f72b 2142{
6224f72b 2143 I32 oldscope;
14dd3ad8 2144 int ret = 0;
db36c5a1 2145 dJMPENV;
6224f72b 2146
9d4ba2ae
AL
2147 PERL_UNUSED_ARG(my_perl);
2148
3280af22 2149 oldscope = PL_scopestack_ix;
96e176bf
CL
2150#ifdef VMS
2151 VMSISH_HUSHED = 0;
2152#endif
6224f72b 2153
14dd3ad8 2154 JMPENV_PUSH(ret);
6224f72b
GS
2155 switch (ret) {
2156 case 1:
2157 cxstack_ix = -1; /* start context stack again */
312caa8e 2158 goto redo_body;
14dd3ad8 2159 case 0: /* normal completion */
14dd3ad8
GS
2160 redo_body:
2161 run_body(oldscope);
14dd3ad8
GS
2162 /* FALL THROUGH */
2163 case 2: /* my_exit() */
3280af22 2164 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2165 LEAVE;
2166 FREETMPS;
3280af22 2167 PL_curstash = PL_defstash;
3a1ee7e8 2168 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2169 PL_endav && !PL_minus_c)
2170 call_list(oldscope, PL_endav);
6224f72b
GS
2171#ifdef MYMALLOC
2172 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2173 dump_mstats("after execution: ");
2174#endif
14dd3ad8
GS
2175 ret = STATUS_NATIVE_EXPORT;
2176 break;
6224f72b 2177 case 3:
312caa8e
CS
2178 if (PL_restartop) {
2179 POPSTACK_TO(PL_mainstack);
2180 goto redo_body;
6224f72b 2181 }
bf49b057 2182 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2183 FREETMPS;
14dd3ad8
GS
2184 ret = 1;
2185 break;
6224f72b
GS
2186 }
2187
14dd3ad8
GS
2188 JMPENV_POP;
2189 return ret;
312caa8e
CS
2190}
2191
14dd3ad8 2192
dd374669 2193STATIC void
14dd3ad8
GS
2194S_run_body(pTHX_ I32 oldscope)
2195{
6224f72b 2196 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2197 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2198
3280af22 2199 if (!PL_restartop) {
6224f72b 2200 DEBUG_x(dump_all());
ecae49c0
NC
2201 if (!DEBUG_q_TEST)
2202 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
2203 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2204 PTR2UV(thr)));
6224f72b 2205
3280af22 2206 if (PL_minus_c) {
bf4acbe4 2207#ifdef MACOS_TRADITIONAL
e69a2255
JH
2208 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2209 (gMacPerl_ErrorFormat ? "# " : ""),
2210 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2211#else
bf49b057 2212 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2213#endif
6224f72b
GS
2214 my_exit(0);
2215 }
3280af22 2216 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2217 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2218 if (PL_initav)
2219 call_list(oldscope, PL_initav);
6224f72b
GS
2220 }
2221
2222 /* do it */
2223
3280af22 2224 if (PL_restartop) {
533c011a 2225 PL_op = PL_restartop;
3280af22 2226 PL_restartop = 0;
cea2e8a9 2227 CALLRUNOPS(aTHX);
6224f72b 2228 }
3280af22
NIS
2229 else if (PL_main_start) {
2230 CvDEPTH(PL_main_cv) = 1;
533c011a 2231 PL_op = PL_main_start;
cea2e8a9 2232 CALLRUNOPS(aTHX);
6224f72b 2233 }
f6b3007c
JH
2234 my_exit(0);
2235 /* NOTREACHED */
6224f72b
GS
2236}
2237
954c1994 2238/*
ccfc67b7
JH
2239=head1 SV Manipulation Functions
2240
954c1994
GS
2241=for apidoc p||get_sv
2242
2243Returns the SV of the specified Perl scalar. If C<create> is set and the
2244Perl variable does not exist then it will be created. If C<create> is not
2245set and the variable does not exist then NULL is returned.
2246
2247=cut
2248*/
2249
6224f72b 2250SV*
864dbfa3 2251Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2252{
2253 GV *gv;
4d1ff10f 2254#ifdef USE_5005THREADS
6224f72b
GS
2255 if (name[1] == '\0' && !isALPHA(name[0])) {
2256 PADOFFSET tmp = find_threadsv(name);
411caa50 2257 if (tmp != NOT_IN_PAD)
6224f72b 2258 return THREADSV(tmp);
6224f72b 2259 }
4d1ff10f 2260#endif /* USE_5005THREADS */
6224f72b
GS
2261 gv = gv_fetchpv(name, create, SVt_PV);
2262 if (gv)
2263 return GvSV(gv);
2264 return Nullsv;
2265}
2266
954c1994 2267/*
ccfc67b7
JH
2268=head1 Array Manipulation Functions
2269
954c1994
GS
2270=for apidoc p||get_av
2271
2272Returns the AV of the specified Perl array. If C<create> is set and the
2273Perl variable does not exist then it will be created. If C<create> is not
2274set and the variable does not exist then NULL is returned.
2275
2276=cut
2277*/
2278
6224f72b 2279AV*
864dbfa3 2280Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
2281{
2282 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
2283 if (create)
2284 return GvAVn(gv);
2285 if (gv)
2286 return GvAV(gv);
2287 return Nullav;
2288}
2289
954c1994 2290/*
ccfc67b7
JH
2291=head1 Hash Manipulation Functions
2292
954c1994
GS
2293=for apidoc p||get_hv
2294
2295Returns the HV of the specified Perl hash. If C<create> is set and the
2296Perl variable does not exist then it will be created. If C<create> is not
2297set and the variable does not exist then NULL is returned.
2298
2299=cut
2300*/
2301
6224f72b 2302HV*
864dbfa3 2303Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2304{
a0d0e21e
LW
2305 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
2306 if (create)
2307 return GvHVn(gv);
2308 if (gv)
2309 return GvHV(gv);
2310 return Nullhv;
2311}
2312
954c1994 2313/*
ccfc67b7
JH
2314=head1 CV Manipulation Functions
2315
954c1994
GS
2316=for apidoc p||get_cv
2317
2318Returns the CV of the specified Perl subroutine. If C<create> is set and
2319the Perl subroutine does not exist then it will be declared (which has the
2320same effect as saying C<sub name;>). If C<create> is not set and the
2321subroutine does not exist then NULL is returned.
2322
2323=cut
2324*/
2325
a0d0e21e 2326CV*
864dbfa3 2327Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
2328{
2329 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2330 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2331 /* XXX this is probably not what they think they're getting.
2332 * It has the same effect as "sub name;", i.e. just a forward
2333 * declaration! */
8ebc5c01 2334 if (create && !GvCVu(gv))
774d564b 2335 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2336 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2337 Nullop,
a0d0e21e
LW
2338 Nullop);
2339 if (gv)
8ebc5c01 2340 return GvCVu(gv);
a0d0e21e
LW
2341 return Nullcv;
2342}
2343
79072805
LW
2344/* Be sure to refetch the stack pointer after calling these routines. */
2345
954c1994 2346/*
ccfc67b7
JH
2347
2348=head1 Callback Functions
2349
954c1994
GS
2350=for apidoc p||call_argv
2351
2352Performs a callback to the specified Perl sub. See L<perlcall>.
2353
2354=cut
2355*/
2356
a0d0e21e 2357I32
8f42b153 2358Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2359
8ac85365
NIS
2360 /* See G_* flags in cop.h */
2361 /* null terminated arg list */
8990e307 2362{
a0d0e21e 2363 dSP;
8990e307 2364
924508f0 2365 PUSHMARK(SP);
a0d0e21e 2366 if (argv) {
8990e307 2367 while (*argv) {
a0d0e21e 2368 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2369 argv++;
2370 }
a0d0e21e 2371 PUTBACK;
8990e307 2372 }
864dbfa3 2373 return call_pv(sub_name, flags);
8990e307
LW
2374}
2375
954c1994
GS
2376/*
2377=for apidoc p||call_pv
2378
2379Performs a callback to the specified Perl sub. See L<perlcall>.
2380
2381=cut
2382*/
2383
a0d0e21e 2384I32
864dbfa3 2385Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2386 /* name of the subroutine */
2387 /* See G_* flags in cop.h */
a0d0e21e 2388{
864dbfa3 2389 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2390}
2391
954c1994
GS
2392/*
2393=for apidoc p||call_method
2394
2395Performs a callback to the specified Perl method. The blessed object must
2396be on the stack. See L<perlcall>.
2397
2398=cut
2399*/
2400
a0d0e21e 2401I32
864dbfa3 2402Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2403 /* name of the subroutine */
2404 /* See G_* flags in cop.h */
a0d0e21e 2405{
968b3946 2406 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2407}
2408
2409/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2410/*
2411=for apidoc p||call_sv
2412
2413Performs a callback to the Perl sub whose name is in the SV. See
2414L<perlcall>.
2415
2416=cut
2417*/
2418
a0d0e21e 2419I32
864dbfa3 2420Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2421 /* See G_* flags in cop.h */
a0d0e21e 2422{
27da23d5 2423 dVAR; dSP;
a0d0e21e 2424 LOGOP myop; /* fake syntax tree node */
968b3946 2425 UNOP method_op;
aa689395 2426 I32 oldmark;
13689cfe 2427 volatile I32 retval = 0;
a0d0e21e 2428 I32 oldscope;
54310121 2429 bool oldcatch = CATCH_GET;
6224f72b 2430 int ret;
533c011a 2431 OP* oldop = PL_op;
db36c5a1 2432 dJMPENV;
1e422769 2433
a0d0e21e
LW
2434 if (flags & G_DISCARD) {
2435 ENTER;
2436 SAVETMPS;
2437 }
2438
aa689395 2439 Zero(&myop, 1, LOGOP);
54310121 2440 myop.op_next = Nullop;
f51d4af5 2441 if (!(flags & G_NOARGS))
aa689395 2442 myop.op_flags |= OPf_STACKED;
54310121
PP
2443 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2444 (flags & G_ARRAY) ? OPf_WANT_LIST :
2445 OPf_WANT_SCALAR);
462e5cf6 2446 SAVEOP();
533c011a 2447 PL_op = (OP*)&myop;
aa689395 2448
3280af22
NIS
2449 EXTEND(PL_stack_sp, 1);
2450 *++PL_stack_sp = sv;
aa689395 2451 oldmark = TOPMARK;
3280af22 2452 oldscope = PL_scopestack_ix;
a0d0e21e 2453
3280af22 2454 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2455 /* Handle first BEGIN of -d. */
3280af22 2456 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2457 /* Try harder, since this may have been a sighandler, thus
2458 * curstash may be meaningless. */
3280af22 2459 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2460 && !(flags & G_NODEBUG))
533c011a 2461 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2462
968b3946
GS
2463 if (flags & G_METHOD) {
2464 Zero(&method_op, 1, UNOP);
2465 method_op.op_next = PL_op;
2466 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2467 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2468 PL_op = (OP*)&method_op;
968b3946
GS
2469 }
2470
312caa8e 2471 if (!(flags & G_EVAL)) {
0cdb2077 2472 CATCH_SET(TRUE);
14dd3ad8 2473 call_body((OP*)&myop, FALSE);
312caa8e 2474 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2475 CATCH_SET(oldcatch);
312caa8e
CS
2476 }
2477 else {
d78bda3d 2478 myop.op_other = (OP*)&myop;
3280af22 2479 PL_markstack_ptr--;
4633a7c4
LW
2480 /* we're trying to emulate pp_entertry() here */
2481 {
c09156bb 2482 register PERL_CONTEXT *cx;
f54cb97a 2483 const I32 gimme = GIMME_V;
ac27b0f5 2484
4633a7c4
LW
2485 ENTER;
2486 SAVETMPS;
ac27b0f5 2487
1d76a5c3 2488 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2489 PUSHEVAL(cx, 0, 0);
533c011a 2490 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2491
faef0170 2492 PL_in_eval = EVAL_INEVAL;
4633a7c4 2493 if (flags & G_KEEPERR)
faef0170 2494 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2495 else
c69006e4 2496 sv_setpvn(ERRSV,"",0);
4633a7c4 2497 }
3280af22 2498 PL_markstack_ptr++;
a0d0e21e 2499
14dd3ad8 2500 JMPENV_PUSH(ret);
6224f72b
GS
2501 switch (ret) {
2502 case 0:
14dd3ad8
GS
2503 redo_body:
2504 call_body((OP*)&myop, FALSE);
312caa8e
CS
2505 retval = PL_stack_sp - (PL_stack_base + oldmark);
2506 if (!(flags & G_KEEPERR))
c69006e4 2507 sv_setpvn(ERRSV,"",0);
a0d0e21e 2508 break;
6224f72b 2509 case 1:
f86702cc 2510 STATUS_ALL_FAILURE;
a0d0e21e 2511 /* FALL THROUGH */
6224f72b 2512 case 2:
a0d0e21e 2513 /* my_exit() was called */
3280af22 2514 PL_curstash = PL_defstash;
a0d0e21e 2515 FREETMPS;
14dd3ad8 2516 JMPENV_POP;
cc3604b1 2517 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2518 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2519 my_exit_jump();
a0d0e21e 2520 /* NOTREACHED */
6224f72b 2521 case 3:
3280af22 2522 if (PL_restartop) {
533c011a 2523 PL_op = PL_restartop;
3280af22 2524 PL_restartop = 0;
312caa8e 2525 goto redo_body;
a0d0e21e 2526 }
3280af22 2527 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2528 if (flags & G_ARRAY)
2529 retval = 0;
2530 else {
2531 retval = 1;
3280af22 2532 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2533 }
312caa8e 2534 break;
a0d0e21e 2535 }
a0d0e21e 2536
3280af22 2537 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2538 SV **newsp;
2539 PMOP *newpm;
2540 I32 gimme;
c09156bb 2541 register PERL_CONTEXT *cx;
a0a2876f
LW
2542 I32 optype;
2543
2544 POPBLOCK(cx,newpm);
2545 POPEVAL(cx);
3280af22 2546 PL_curpm = newpm;
a0a2876f 2547 LEAVE;
9d4ba2ae
AL
2548 PERL_UNUSED_VAR(newsp);
2549 PERL_UNUSED_VAR(gimme);
2550 PERL_UNUSED_VAR(optype);
a0d0e21e 2551 }
14dd3ad8 2552 JMPENV_POP;
a0d0e21e 2553 }
1e422769 2554
a0d0e21e 2555 if (flags & G_DISCARD) {
3280af22 2556 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2557 retval = 0;
2558 FREETMPS;
2559 LEAVE;
2560 }
533c011a 2561 PL_op = oldop;
a0d0e21e
LW
2562 return retval;
2563}
2564
312caa8e 2565STATIC void
dd374669 2566S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2567{
312caa8e
CS
2568 if (PL_op == myop) {
2569 if (is_eval)
f807eda9 2570 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2571 else
f807eda9 2572 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2573 }
2574 if (PL_op)
cea2e8a9 2575 CALLRUNOPS(aTHX);
312caa8e
CS
2576}
2577
6e72f9df 2578/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2579
954c1994
GS
2580/*
2581=for apidoc p||eval_sv
2582
2583Tells Perl to C<eval> the string in the SV.
2584
2585=cut
2586*/
2587
a0d0e21e 2588I32
864dbfa3 2589Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2590
8ac85365 2591 /* See G_* flags in cop.h */
a0d0e21e 2592{
924508f0 2593 dSP;
a0d0e21e 2594 UNOP myop; /* fake syntax tree node */
8fa7f367 2595 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2596 volatile I32 retval = 0;
6224f72b 2597 int ret;
533c011a 2598 OP* oldop = PL_op;
db36c5a1 2599 dJMPENV;
84902520 2600
4633a7c4
LW
2601 if (flags & G_DISCARD) {
2602 ENTER;
2603 SAVETMPS;
2604 }
2605
462e5cf6 2606 SAVEOP();
533c011a
NIS
2607 PL_op = (OP*)&myop;
2608 Zero(PL_op, 1, UNOP);
3280af22
NIS
2609 EXTEND(PL_stack_sp, 1);
2610 *++PL_stack_sp = sv;
79072805 2611
4633a7c4
LW
2612 if (!(flags & G_NOARGS))
2613 myop.op_flags = OPf_STACKED;
79072805 2614 myop.op_next = Nullop;
6e72f9df 2615 myop.op_type = OP_ENTEREVAL;
54310121
PP
2616 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2617 (flags & G_ARRAY) ? OPf_WANT_LIST :
2618 OPf_WANT_SCALAR);
6e72f9df
PP
2619 if (flags & G_KEEPERR)
2620 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2621
dedbcade
DM
2622 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2623 * before a PUSHEVAL, which corrupts the stack after a croak */
2624 TAINT_PROPER("eval_sv()");
2625
14dd3ad8 2626 JMPENV_PUSH(ret);
6224f72b
GS
2627 switch (ret) {
2628 case 0:
14dd3ad8
GS
2629 redo_body:
2630 call_body((OP*)&myop,TRUE);
312caa8e
CS
2631 retval = PL_stack_sp - (PL_stack_base + oldmark);
2632 if (!(flags & G_KEEPERR))
c69006e4 2633 sv_setpvn(ERRSV,"",0);
4633a7c4 2634 break;
6224f72b 2635 case 1:
f86702cc 2636 STATUS_ALL_FAILURE;
4633a7c4 2637 /* FALL THROUGH */
6224f72b 2638 case 2:
4633a7c4 2639 /* my_exit() was called */
3280af22 2640 PL_curstash = PL_defstash;
4633a7c4 2641 FREETMPS;
14dd3ad8 2642 JMPENV_POP;
cc3604b1 2643 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2644 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2645 my_exit_jump();
4633a7c4 2646 /* NOTREACHED */
6224f72b 2647 case 3:
3280af22 2648 if (PL_restartop) {
533c011a 2649 PL_op = PL_restartop;
3280af22 2650 PL_restartop = 0;
312caa8e 2651 goto redo_body;
4633a7c4 2652 }
3280af22 2653 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2654 if (flags & G_ARRAY)
2655 retval = 0;
2656 else {
2657 retval = 1;
3280af22 2658 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2659 }
312caa8e 2660 break;
4633a7c4
LW
2661 }
2662
14dd3ad8 2663 JMPENV_POP;
4633a7c4 2664 if (flags & G_DISCARD) {
3280af22 2665 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2666 retval = 0;
2667 FREETMPS;
2668 LEAVE;
2669 }
533c011a 2670 PL_op = oldop;
4633a7c4
LW
2671 return retval;
2672}
2673
954c1994
GS
2674/*
2675=for apidoc p||eval_pv
2676
2677Tells Perl to C<eval> the given string and return an SV* result.
2678
2679=cut
2680*/
2681
137443ea 2682SV*
864dbfa3 2683Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2684{
2685 dSP;
2686 SV* sv = newSVpv(p, 0);
2687
864dbfa3 2688 eval_sv(sv, G_SCALAR);
137443ea
PP
2689 SvREFCNT_dec(sv);
2690
2691 SPAGAIN;
2692 sv = POPs;
2693 PUTBACK;
2694
2d8e6c8d 2695 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2696 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2697 }
137443ea
PP
2698
2699 return sv;
2700}
2701
4633a7c4
LW
2702/* Require a module. */
2703
954c1994 2704/*
ccfc67b7
JH
2705=head1 Embedding Functions
2706
954c1994
GS
2707=for apidoc p||require_pv
2708
7d3fb230
BS
2709Tells Perl to C<require> the file named by the string argument. It is
2710analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2711implemented that way; consider using load_module instead.
954c1994 2712
7d3fb230 2713=cut */
954c1994 2714
4633a7c4 2715void
864dbfa3 2716Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2717{
d3acc0f7
JP
2718 SV* sv;
2719 dSP;
e788e7d3 2720 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2721 PUTBACK;
2722 sv = sv_newmortal();
4633a7c4
LW
2723 sv_setpv(sv, "require '");
2724 sv_catpv(sv, pv);
2725 sv_catpv(sv, "'");
864dbfa3 2726 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2727 SPAGAIN;
2728 POPSTACK;
79072805
LW
2729}
2730
79072805 2731void
e1ec3a88 2732Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805
LW
2733{
2734 register GV *gv;
2735
155aba94 2736 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2737 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2738}
2739
76e3520e 2740STATIC void
e1ec3a88 2741S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2742{
ab821d7f 2743 /* This message really ought to be max 23 lines.
75c72d73 2744 * Removed -h because the user already knows that option. Others? */
fb73857a 2745
27da23d5 2746 static const char * const usage_msg[] = {
aefc56c5
SF
2747"-0[octal] specify record separator (\\0, if no argument)",
2748"-A[mod][=pattern] activate all/given assertions",
2749"-a autosplit mode with -n or -p (splits $_ into @F)",
2750"-C[number/list] enables the listed Unicode features",
2751"-c check syntax only (runs BEGIN and CHECK blocks)",
2752"-d[:debugger] run program under debugger",
2753"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2754"-e program one line of program (several -e's allowed, omit programfile)",
aefc56c5 2755"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2756"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2757"-i[extension] edit <> files in place (makes backup if extension supplied)",
2758"-Idirectory specify @INC/#include directory (several -I's allowed)",
2759"-l[octal] enable line ending processing, specifies line terminator",
2760"-[mM][-]module execute \"use/no module...\" before executing program",
2761"-n assume \"while (<>) { ... }\" loop around program",
2762"-p assume loop like -n but print line also, like sed",
2763"-P run program through C preprocessor before compilation",
2764"-s enable rudimentary parsing for switches after programfile",
2765"-S look for programfile using PATH environment variable",
2766"-t enable tainting warnings",
2767"-T enable tainting checks",
2768"-u dump core after parsing program",
2769"-U allow unsafe operations",
2770"-v print version, subversion (includes VERY IMPORTANT perl info)",
2771"-V[:variable] print configuration summary (or a single Config.pm variable)",
2772"-w enable many useful warnings (RECOMMENDED)",
2773"-W enable all warnings",
2774"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2775"-X disable all warnings",
fb73857a
PP
2776"\n",
2777NULL
2778};
27da23d5 2779 const char * const *p = usage_msg;
fb73857a 2780
b0e47665
GS
2781 PerlIO_printf(PerlIO_stdout(),
2782 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2783 name);
fb73857a 2784 while (*p)
b0e47665 2785 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2786}
2787
b4ab917c
DM
2788/* convert a string of -D options (or digits) into an int.
2789 * sets *s to point to the char after the options */
2790
2791#ifdef DEBUGGING
2792int
e1ec3a88 2793Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2794{
27da23d5 2795 static const char * const usage_msgd[] = {
e6e64d9b
JC
2796 " Debugging flag values: (see also -d)",
2797 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2798 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2799 " l Context (loop) stack processing",
2800 " t Trace execution",
2801 " o Method and overloading resolution",
2802 " c String/numeric conversions",
2803 " P Print profiling info, preprocessor command for -P, source file input state",
2804 " m Memory allocation",
2805 " f Format processing",
2806 " r Regular expression parsing and execution",
2807 " x Syntax tree dump",
3679267a 2808 " u Tainting checks",
e6e64d9b
JC
2809 " H Hash dump -- usurps values()",
2810 " X Scratchpad allocation",
2811 " D Cleaning up",
2812 " S Thread synchronization",
2813 " T Tokenising",
2814 " R Include reference counts of dumped variables (eg when using -Ds)",
2815 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2816 " v Verbose: use in conjunction with other flags",
2817 " C Copy On Write",
2818 " A Consistency checks on internal structures",
3679267a 2819 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2820 NULL
2821 };
b4ab917c
DM
2822 int i = 0;
2823 if (isALPHA(**s)) {
2824 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2825 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2826
2827 for (; isALNUM(**s); (*s)++) {
e1ec3a88 2828 const char *d = strchr(debopts,**s);
b4ab917c
DM
2829 if (d)
2830 i |= 1 << (d - debopts);
2831 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2832 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2833 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2834 }
2835 }
e6e64d9b 2836 else if (isDIGIT(**s)) {
b4ab917c
DM
2837 i = atoi(*s);
2838 for (; isALNUM(**s); (*s)++) ;
2839 }
ddcf8bc1 2840 else if (givehelp) {
aadb217d 2841 char **p = (char **)usage_msgd;
e6e64d9b
JC
2842 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2843 }
b4ab917c
DM
2844# ifdef EBCDIC
2845 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2846 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2847 "-Dp not implemented on this platform\n");
2848# endif
2849 return i;
2850}
2851#endif
2852
79072805
LW
2853/* This routine handles any switches that can be given during run */
2854
2855char *
864dbfa3 2856Perl_moreswitches(pTHX_ char *s)
79072805 2857{
27da23d5 2858 dVAR;
84c133a0 2859 UV rschar;
79072805
LW
2860
2861 switch (*s) {
2862 case '0':
a863c7d1 2863 {
f2095865 2864 I32 flags = 0;
a3b680e6 2865 STRLEN numlen;
f2095865
JH
2866
2867 SvREFCNT_dec(PL_rs);
2868 if (s[1] == 'x' && s[2]) {
a3b680e6 2869 const char *e = s+=2;
f2095865
JH
2870 U8 *tmps;
2871
a3b680e6
AL
2872 while (*e)
2873 e++;
f2095865
JH
2874 numlen = e - s;
2875 flags = PERL_SCAN_SILENT_ILLDIGIT;
2876 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2877 if (s + numlen < e) {
2878 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2879 numlen = 0;
2880 s--;
2881 }
2882 PL_rs = newSVpvn("", 0);
c5661c80 2883 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2884 tmps = (U8*)SvPVX(PL_rs);
2885 uvchr_to_utf8(tmps, rschar);
2886 SvCUR_set(PL_rs, UNISKIP(rschar));
2887 SvUTF8_on(PL_rs);
2888 }
2889 else {
2890 numlen = 4;
2891 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2892 if (rschar & ~((U8)~0))
2893 PL_rs = &PL_sv_undef;
2894 else if (!rschar && numlen >= 2)
2895 PL_rs = newSVpvn("", 0);
2896 else {
2897 char ch = (char)rschar;
2898 PL_rs = newSVpvn(&ch, 1);
2899 }
2900 }
800633c3 2901 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2902 return s + numlen;
a863c7d1 2903 }
46487f74 2904 case 'C':
a05d7ebb 2905 s++;
dd374669 2906 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2907 return s;
2304df62 2908 case 'F':
3280af22 2909 PL_minus_F = TRUE;
ebce5377
RGS
2910 PL_splitstr = ++s;
2911 while (*s && !isSPACE(*s)) ++s;
2912 *s = '\0';
2913 PL_splitstr = savepv(PL_splitstr);
2304df62 2914 return s;
79072805 2915 case 'a':
3280af22 2916 PL_minus_a = TRUE;
79072805
LW
2917 s++;
2918 return s;
2919 case 'c':
3280af22 2920 PL_minus_c = TRUE;
79072805
LW
2921 s++;
2922 return s;
2923 case 'd':
bbce6d69 2924 forbid_setid("-d");
4633a7c4 2925 s++;
2cbb2ee1
RGS
2926
2927 /* -dt indicates to the debugger that threads will be used */
2928 if (*s == 't' && !isALNUM(s[1])) {
2929 ++s;
2930 my_setenv("PERL5DB_THREADED", "1");
2931 }
2932
70c94a19
RR
2933 /* The following permits -d:Mod to accepts arguments following an =
2934 in the fashion that -MSome::Mod does. */
2935 if (*s == ':' || *s == '=') {
06b5626a 2936 const char *start;
70c94a19
RR
2937 SV *sv;
2938 sv = newSVpv("use Devel::", 0);
2939 start = ++s;
2940 /* We now allow -d:Module=Foo,Bar */
2941 while(isALNUM(*s) || *s==':') ++s;
2942 if (*s != '=')
2943 sv_catpv(sv, start);
2944 else {
2945 sv_catpvn(sv, start, s-start);
0c5a913d 2946 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
70c94a19 2947 }
4633a7c4 2948 s += strlen(s);
184f32ec 2949 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 2950 }
ed094faf 2951 if (!PL_perldb) {
3280af22 2952 PL_perldb = PERLDB_ALL;
a0d0e21e 2953 init_debugger();
ed094faf 2954 }
79072805
LW
2955 return s;
2956 case 'D':
0453d815 2957 {
79072805 2958#ifdef DEBUGGING
bbce6d69 2959 forbid_setid("-D");
b4ab917c 2960 s++;
dd374669 2961 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 2962#else /* !DEBUGGING */
0453d815 2963 if (ckWARN_d(WARN_DEBUGGING))
9014280d 2964 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 2965 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 2966 for (s++; isALNUM(*s); s++) ;
79072805 2967#endif
79072805 2968 return s;
0453d815 2969 }
4633a7c4 2970 case 'h':
ac27b0f5 2971 usage(PL_origargv[0]);
7ca617d0 2972 my_exit(0);
79072805 2973 case 'i':
3280af22
NIS
2974 if (PL_inplace)
2975 Safefree(PL_inplace);
c030f24b
GH
2976#if defined(__CYGWIN__) /* do backup extension automagically */
2977 if (*(s+1) == '\0') {
2978 PL_inplace = savepv(".bak");
2979 return s+1;
2980 }
2981#endif /* __CYGWIN__ */
3280af22 2982 PL_inplace = savepv(s+1);
a6e20a40
AL
2983 for (s = PL_inplace; *s && !isSPACE(*s); s++)
2984 ;
7b8d334a 2985 if (*s) {
fb73857a 2986 *s++ = '\0';
7b8d334a
GS
2987 if (*s == '-') /* Additional switches on #! line. */
2988 s++;
2989 }
fb73857a 2990 return s;
4e49a025 2991 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2992 forbid_setid("-I");
fb73857a
PP
2993 ++s;
2994 while (*s && isSPACE(*s))
2995 ++s;
2996 if (*s) {
774d564b 2997 char *e, *p;
0df16ed7
GS
2998 p = s;
2999 /* ignore trailing spaces (possibly followed by other switches) */
3000 do {
3001 for (e = p; *e && !isSPACE(*e); e++) ;
3002 p = e;
3003 while (isSPACE(*p))
3004 p++;
3005 } while (*p && *p != '-');
3006 e = savepvn(s, e-s);
88fe16b2 3007 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3008 Safefree(e);
3009 s = p;
3010 if (*s == '-')
3011 s++;
79072805
LW
3012 }
3013 else
a67e862a 3014 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3015 return s;
79072805 3016 case 'l':
3280af22 3017 PL_minus_l = TRUE;
79072805 3018 s++;
7889fe52
NIS
3019 if (PL_ors_sv) {
3020 SvREFCNT_dec(PL_ors_sv);
3021 PL_ors_sv = Nullsv;
3022 }
79072805 3023 if (isDIGIT(*s)) {
53305cf1 3024 I32 flags = 0;
a3b680e6 3025 STRLEN numlen;
7889fe52 3026 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
3027 numlen = 3 + (*s == '0');
3028 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3029 s += numlen;
3030 }
3031 else {
8bfdd7d9 3032 if (RsPARA(PL_rs)) {
7889fe52
NIS
3033 PL_ors_sv = newSVpvn("\n\n",2);
3034 }
3035 else {
8bfdd7d9 3036 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3037 }
79072805
LW
3038 }
3039 return s;
06492da6
SF
3040 case 'A':
3041 forbid_setid("-A");
930366bd
RGS
3042 if (!PL_preambleav)
3043 PL_preambleav = newAV();
aefc56c5
SF
3044 s++;
3045 {
3046 char *start = s;
3047 SV *sv = newSVpv("use assertions::activate", 24);
3048 while(isALNUM(*s) || *s == ':') ++s;
3049 if (s != start) {
3050 sv_catpvn(sv, "::", 2);
3051 sv_catpvn(sv, start, s-start);
3052 }
3053 if (*s == '=') {
0c5a913d 3054 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3055 s+=strlen(s);
3056 }
3057 else if (*s != '\0') {
3058 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, s-start, start);
3059 }
06492da6 3060 av_push(PL_preambleav, sv);
aefc56c5 3061 return s;
06492da6 3062 }
1a30305b 3063 case 'M':
bbce6d69 3064 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3065 /* FALL THROUGH */
3066 case 'm':
bbce6d69 3067 forbid_setid("-m"); /* XXX ? */
1a30305b 3068 if (*++s) {
a5f75d66 3069 char *start;
11343788 3070 SV *sv;
e1ec3a88 3071 const char *use = "use ";
a5f75d66 3072 /* -M-foo == 'no foo' */
d0043bd1
NC
3073 /* Leading space on " no " is deliberate, to make both
3074 possibilities the same length. */
3075 if (*s == '-') { use = " no "; ++s; }
3076 sv = newSVpvn(use,4);
a5f75d66 3077 start = s;
1a30305b 3078 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3079 while(isALNUM(*s) || *s==':') ++s;
3080 if (*s != '=') {
11343788 3081 sv_catpv(sv, start);
c07a80fd
PP
3082 if (*(start-1) == 'm') {
3083 if (*s != '\0')
cea2e8a9 3084 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 3085 sv_catpv( sv, " ()");
c07a80fd
PP
3086 }
3087 } else {
6df41af2 3088 if (s == start)
be98fb35
GS
3089 Perl_croak(aTHX_ "Module name required with -%c option",
3090 s[-1]);
11343788 3091 sv_catpvn(sv, start, s-start);
3d27e215
LM
3092 sv_catpv(sv, " split(/,/,q");
3093 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
11343788 3094 sv_catpv(sv, ++s);
3d27e215 3095 sv_catpvn(sv, "\0)", 2);
c07a80fd 3096 }
1a30305b 3097 s += strlen(s);
5c831c24 3098 if (!PL_preambleav)
3280af22
NIS
3099 PL_preambleav = newAV();
3100 av_push(PL_preambleav, sv);
1a30305b
PP
3101 }
3102 else
9e81e6a1 3103 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3104 return s;
79072805 3105 case 'n':
3280af22 3106 PL_minus_n = TRUE;
79072805
LW
3107 s++;
3108 return s;
3109 case 'p':
3280af22 3110 PL_minus_p = TRUE;
79072805
LW
3111 s++;
3112 return s;
3113 case 's':
bbce6d69 3114 forbid_setid("-s");
3280af22 3115 PL_doswitches = TRUE;
79072805
LW
3116 s++;
3117 return s;
6537fe72
MS
3118 case 't':
3119 if (!PL_tainting)
22f7c9c9 3120 TOO_LATE_FOR('t');
6537fe72
MS
3121 s++;
3122 return s;
463ee0b2 3123 case 'T':
3280af22 3124 if (!PL_tainting)
22f7c9c9 3125 TOO_LATE_FOR('T');
463ee0b2
LW
3126 s++;
3127 return s;
79072805 3128 case 'u':
bf4acbe4
GS
3129#ifdef MACOS_TRADITIONAL
3130 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3131#endif
3280af22 3132 PL_do_undump = TRUE;
79072805
LW
3133 s++;
3134 return s;
3135 case 'U':
3280af22 3136 PL_unsafe = TRUE;
79072805
LW
3137 s++;
3138 return s;
3139 case 'v':
d7aa5382
JP
3140 if (!sv_derived_from(PL_patchlevel, "version"))
3141 (void *)upg_version(PL_patchlevel);
8e9464f1 3142#if !defined(DGUX)
b0e47665 3143 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3144 Perl_form(aTHX_ "\nThis is perl, %"SVf" built for %s",
d7aa5382
JP
3145 vstringify(PL_patchlevel),
3146 ARCHNAME));
8e9464f1
JH
3147#else /* DGUX */
3148/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3149 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3150 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3151 vstringify(PL_patchlevel)));
8e9464f1
JH
3152 PerlIO_printf(PerlIO_stdout(),
3153 Perl_form(aTHX_ " built under %s at %s %s\n",
3154 OSNAME, __DATE__, __TIME__));
3155 PerlIO_printf(PerlIO_stdout(),
3156 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3157 OSVERS));
8e9464f1
JH
3158#endif /* !DGUX */
3159
fb73857a
PP
3160#if defined(LOCAL_PATCH_COUNT)
3161 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3162 PerlIO_printf(PerlIO_stdout(),
3163 "\n(with %d registered patch%s, "
3164 "see perl -V for more detail)",
3165 (int)LOCAL_PATCH_COUNT,
3166 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3167#endif
1a30305b 3168
b0e47665 3169 PerlIO_printf(PerlIO_stdout(),
359b00fe 3170 "\n\nCopyright 1987-2005, Larry Wall\n");
eae9c151
JH
3171#ifdef MACOS_TRADITIONAL
3172 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3173 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3174 "maintained by Chris Nandor\n");
eae9c151 3175#endif
79072805 3176#ifdef MSDOS
b0e47665
GS
3177 PerlIO_printf(PerlIO_stdout(),
3178 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3179#endif
3180#ifdef DJGPP
b0e47665
GS
3181 PerlIO_printf(PerlIO_stdout(),
3182 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3183 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3184#endif
79072805 3185#ifdef OS2
b0e47665
GS
3186 PerlIO_printf(PerlIO_stdout(),
3187 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3188 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3189#endif
79072805 3190#ifdef atarist
b0e47665
GS
3191 PerlIO_printf(PerlIO_stdout(),
3192 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3193#endif
a3f9223b 3194#ifdef __BEOS__
b0e47665
GS
3195 PerlIO_printf(PerlIO_stdout(),
3196 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3197#endif
1d84e8df 3198#ifdef MPE
b0e47665 3199 PerlIO_printf(PerlIO_stdout(),
e583a879 3200 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3201#endif
9d116dd7 3202#ifdef OEMVS
b0e47665
GS
3203 PerlIO_printf(PerlIO_stdout(),
3204 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3205#endif
495c5fdc 3206#ifdef __VOS__
b0e47665 3207 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3208 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3209#endif
092bebab 3210#ifdef __OPEN_VM
b0e47665
GS
3211 PerlIO_printf(PerlIO_stdout(),
3212 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3213#endif
a1a0e61e 3214#ifdef POSIX_BC
b0e47665
GS
3215 PerlIO_printf(PerlIO_stdout(),
3216 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3217#endif
61ae2fbf 3218#ifdef __MINT__
b0e47665
GS
3219 PerlIO_printf(PerlIO_stdout(),
3220 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3221#endif
f83d2536 3222#ifdef EPOC
b0e47665 3223 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3224 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3225#endif
e1caacb4 3226#ifdef UNDER_CE
b475b3e6
JH
3227 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3228 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3229 wce_hitreturn();
3230#endif
27da23d5
JH
3231#ifdef SYMBIAN
3232 PerlIO_printf(PerlIO_stdout(),
3233 "Symbian port by Nokia, 2004-2005\n");
3234#endif
baed7233
DL
3235#ifdef BINARY_BUILD_NOTICE
3236 BINARY_BUILD_NOTICE;
3237#endif
b0e47665
GS
3238 PerlIO_printf(PerlIO_stdout(),
3239 "\n\
79072805 3240Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3241GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3242Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3243this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3244Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3245 my_exit(0);
79072805 3246 case 'w':
599cee73 3247 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3248 PL_dowarn |= G_WARN_ON;
599cee73
PM
3249 s++;
3250 return s;
3251 case 'W':
ac27b0f5 3252 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3253 if (!specialWARN(PL_compiling.cop_warnings))
3254 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3255 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3256 s++;
3257 return s;
3258 case 'X':
ac27b0f5 3259 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3260 if (!specialWARN(PL_compiling.cop_warnings))
3261 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3262 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3263 s++;
3264 return s;
a0d0e21e 3265 case '*':
79072805
LW
3266 case ' ':
3267 if (s[1] == '-') /* Additional switches on #! line. */
3268 return s+2;
3269 break;
a0d0e21e 3270 case '-':
79072805 3271 case 0:
51882d45 3272#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3273 case '\r':
3274#endif
79072805
LW
3275 case '\n':
3276 case '\t':
3277 break;
aa689395
PP
3278#ifdef ALTERNATE_SHEBANG
3279 case 'S': /* OS/2 needs -S on "extproc" line. */
3280 break;
3281#endif
a0d0e21e 3282 case 'P':
3280af22 3283 if (PL_preprocess)
a0d0e21e
LW
3284 return s+1;
3285 /* FALL THROUGH */
79072805 3286 default:
cea2e8a9 3287 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
3288 }
3289 return Nullch;
3290}
3291
3292/* compliments of Tom Christiansen */
3293
3294/* unexec() can be found in the Gnu emacs distribution */
ee580363 3295/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3296
3297void
864dbfa3 3298Perl_my_unexec(pTHX)
79072805
LW
3299{
3300#ifdef UNEXEC
46fc3d4c
PP
3301 SV* prog;
3302 SV* file;
ee580363 3303 int status = 1;
79072805
LW
3304 extern int etext;
3305
ee580363 3306 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 3307 sv_catpv(prog, "/perl");
6b88bc9c 3308 file = newSVpv(PL_origfilename, 0);
46fc3d4c 3309 sv_catpv(file, ".perldump");
79072805 3310
ee580363
GS
3311 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3312 /* unexec prints msg to stderr in case of failure */
6ad3d225 3313 PerlProc_exit(status);
79072805 3314#else
a5f75d66
AD
3315# ifdef VMS
3316# include <lib$routines.h>
3317 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 3318# else
79072805 3319 ABORT(); /* for use with undump */
aa689395 3320# endif
a5f75d66 3321#endif
79072805
LW
3322}
3323
cb68f92d
GS
3324/* initialize curinterp */
3325STATIC void
cea2e8a9 3326S_init_interp(pTHX)
cb68f92d
GS
3327{
3328
acfe0abc
GS
3329#ifdef MULTIPLICITY
3330# define PERLVAR(var,type)
3331# define PERLVARA(var,n,type)
3332# if defined(PERL_IMPLICIT_CONTEXT)
3333# if defined(USE_5005THREADS)
3334# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3335# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3336# else /* !USE_5005THREADS */
3337# define PERLVARI(var,type,init) aTHX->var = init;
3338# define PERLVARIC(var,type,init) aTHX->var = init;
3339# endif /* USE_5005THREADS */
3967c732 3340# else
acfe0abc
GS
3341# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3342# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3343# endif
acfe0abc
GS
3344# include "intrpvar.h"
3345# ifndef USE_5005THREADS
3346# include "thrdvar.h"
3347# endif
3348# undef PERLVAR
3349# undef PERLVARA
3350# undef PERLVARI
3351# undef PERLVARIC
3352#else
3353# define PERLVAR(var,type)
3354# define PERLVARA(var,n,type)
3355# define PERLVARI(var,type,init) PL_##var = init;
3356# define PERLVARIC(var,type,init) PL_##var = init;
3357# include "intrpvar.h"
3358# ifndef USE_5005THREADS
3359# include "thrdvar.h"
3360# endif
3361# undef PERLVAR
3362# undef PERLVARA
3363# undef PERLVARI
3364# undef PERLVARIC
cb68f92d
GS
3365#endif
3366
cb68f92d
GS
3367}
3368
76e3520e 3369STATIC void
cea2e8a9 3370S_init_main_stash(pTHX)
79072805 3371{
463ee0b2 3372 GV *gv;
6e72f9df 3373
3280af22 3374 PL_curstash = PL_defstash = newHV();
79cb57f6 3375 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
3376 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
3377 SvREFCNT_dec(GvHV(gv));
3280af22 3378 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3379 SvREADONLY_on(gv);
bfcb3514 3380 Perl_hv_name_set(aTHX_ PL_defstash, "main", 4, 0);
3280af22
NIS
3381 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
3382 GvMULTI_on(PL_incgv);
3383 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3384 GvMULTI_on(PL_hintgv);
3385 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
3386 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
3387 GvMULTI_on(PL_errgv);
3388 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3389 GvMULTI_on(PL_replgv);
cea2e8a9 3390 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3391#ifdef PERL_DONT_CREATE_GVSV
3392 gv_SVadd(PL_errgv);
3393#endif
38a03e6e
MB
3394 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3395 sv_setpvn(ERRSV, "", 0);
3280af22 3396 PL_curstash = PL_defstash;
11faa288 3397 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 3398 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 3399 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 3400 /* We must init $/ before switches are processed. */
864dbfa3 3401 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3402}
3403
ae3f3efd 3404/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3405STATIC void
dd374669 3406S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3407{
ae3f3efd 3408#ifndef IAMSUID
e1ec3a88
AL
3409 const char *quote;
3410 const char *code;
3411 const char *cpp_discard_flag;
3412 const char *perl;
ae3f3efd 3413#endif
27da23d5 3414 dVAR;
1b24ed4b 3415
ae3f3efd
PS
3416 PL_fdscript = -1;
3417 PL_suidscript = -1;
79072805 3418
3280af22 3419 if (PL_e_script) {
ff5bdd37 3420 PL_origfilename = savepvn("-e", 2);
96436eeb 3421 }
6c4ab083
GS
3422 else {
3423 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3424 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
3425
3426 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
e1ec3a88 3427 const char *s = scriptname + 8;
ae3f3efd 3428 PL_fdscript = atoi(s);
6c4ab083
GS
3429 while (isDIGIT(*s))
3430 s++;
3431 if (*s) {
ae3f3efd
PS
3432 /* PSz 18 Feb 04
3433 * Tell apart "normal" usage of fdscript, e.g.
3434 * with bash on FreeBSD:
3435 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3436 * from usage in suidperl.
3437 * Does any "normal" usage leave garbage after the number???
3438 * Is it a mistake to use a similar /dev/fd/ construct for
3439 * suidperl?
3440 */
3441 PL_suidscript = 1;
3442 /* PSz 20 Feb 04
3443 * Be supersafe and do some sanity-checks.
3444 * Still, can we be sure we got the right thing?
3445 */
3446 if (*s != '/') {
3447 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3448 }
3449 if (! *(s+1)) {
3450 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3451 }
6c4ab083 3452 scriptname = savepv(s + 1);
3280af22 3453 Safefree(PL_origfilename);
dd374669 3454 PL_origfilename = (char *)scriptname;
6c4ab083
GS
3455 }
3456 }
3457 }
3458
05ec9bb3 3459 CopFILE_free(PL_curcop);
57843af0 3460 CopFILE_set(PL_curcop, PL_origfilename);
770526c1 3461 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
dd374669 3462 scriptname = (char *)"";
ae3f3efd
PS
3463 if (PL_fdscript >= 0) {
3464 PL_rsfp = PerlIO_fdopen(PL_fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS
3465# if defined(HAS_FCNTL) && defined(F_SETFD)
3466 if (PL_rsfp)
3467 /* ensure close-on-exec */
3468 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3469# endif
96436eeb 3470 }
ae3f3efd
PS
3471#ifdef IAMSUID
3472 else {
86207487
NC
3473 Perl_croak(aTHX_ "sperl needs fd script\n"
3474 "You should not call sperl directly; do you need to "
3475 "change a #! line\nfrom sperl to perl?\n");
3476
ae3f3efd
PS
3477/* PSz 11 Nov 03
3478 * Do not open (or do other fancy stuff) while setuid.
3479 * Perl does the open, and hands script to suidperl on a fd;
3480 * suidperl only does some checks, sets up UIDs and re-execs
3481 * perl with that fd as it has always done.
3482 */
3483 }
3484 if (PL_suidscript != 1) {
3485 Perl_croak(aTHX_ "suidperl needs (suid) fd script\n");
3486 }
3487#else /* IAMSUID */
3280af22 3488 else if (PL_preprocess) {
dd374669 3489 const char *cpp_cfg = CPPSTDIN;
79cb57f6 3490 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
3491 SV *cmd = NEWSV(0,0);
3492
ae58f265
JH
3493 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
3494 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
46fc3d4c 3495 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 3496 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 3497 sv_catpv(cpp, cpp_cfg);
79072805 3498
1b24ed4b
MS
3499# ifndef VMS
3500 sv_catpvn(sv, "-I", 2);
3501 sv_catpv(sv,PRIVLIB_EXP);
3502# endif
46fc3d4c 3503
14953ddc
MB
3504 DEBUG_P(PerlIO_printf(Perl_debug_log,
3505 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
848ef955
NC
3506 scriptname, SvPVX_const (cpp), SvPVX_const (sv),
3507 CPPMINUS));
1b24ed4b
MS
3508
3509# if defined(MSDOS) || defined(WIN32) || defined(VMS)
3510 quote = "\"";
3511# else
3512 quote = "'";
3513# endif
3514
3515# ifdef VMS
3516 cpp_discard_flag = "";
3517# else
3518 cpp_discard_flag = "-C";
3519# endif
3520
3521# ifdef OS2
3522 perl = os2_execname(aTHX);
3523# else
3524 perl = PL_origargv[0];
3525# endif
3526
3527
3528 /* This strips off Perl comments which might interfere with
62375a60
NIS
3529 the C pre-processor, including #!. #line directives are
3530 deliberately stripped to avoid confusion with Perl's version
1b24ed4b
MS
3531 of #line. FWP played some golf with it so it will fit
3532 into VMS's 255 character buffer.
3533 */
3534 if( PL_doextract )
3535 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3536 else
3537 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3538
3539 Perl_sv_setpvf(aTHX_ cmd, "\
3540%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
62375a60 3541 perl, quote, code, quote, scriptname, cpp,
1b24ed4b
MS
3542 cpp_discard_flag, sv, CPPMINUS);
3543
3280af22 3544 PL_doextract = FALSE;
0a6c758d 3545
62375a60
NIS
3546 DEBUG_P(PerlIO_printf(Perl_debug_log,
3547 "PL_preprocess: cmd=\"%s\"\n",
848ef955 3548 SvPVX_const(cmd)));
0a6c758d 3549
848ef955 3550 PL_rsfp = PerlProc_popen((char *)SvPVX_const(cmd), (char *)"r");
46fc3d4c
PP
3551 SvREFCNT_dec(cmd);
3552 SvREFCNT_dec(cpp);
79072805
LW
3553 }
3554 else if (!*scriptname) {
bbce6d69 3555 forbid_setid("program input from stdin");
3280af22 3556 PL_rsfp = PerlIO_stdin();
79072805 3557 }
96436eeb 3558 else {
3280af22 3559 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS
3560# if defined(HAS_FCNTL) && defined(F_SETFD)
3561 if (PL_rsfp)
3562 /* ensure close-on-exec */
3563 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3564# endif
96436eeb 3565 }
ae3f3efd 3566#endif /* IAMSUID */
3280af22 3567 if (!PL_rsfp) {
447218f8 3568 /* PSz 16 Sep 03 Keep neat error message */
fa3aa65a
JC
3569 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3570 CopFILE(PL_curcop), Strerror(errno));
13281fa4 3571 }
79072805 3572}
8d063cd8 3573
7b89560d
JH
3574/* Mention