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[perl5.git] / perl.c
CommitLineData
a0d0e21e
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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
JH
85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
NC
95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
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NC
108#endif
109
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
e6827a76
NC
144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
NC
147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
e6827a76
NC
153 }
154 else {
155 PERL_SET_THX(my_perl);
156 }
157}
06d86050 158
32e30700
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
GS
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;
32e30700
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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
GS
209/*
210=for apidoc perl_construct
211
212Initializes a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
79072805 217void
0cb96387 218perl_construct(pTHXx)
79072805 219{
27da23d5 220 dVAR;
9d4ba2ae 221 PERL_UNUSED_ARG(my_perl);
8990e307 222#ifdef MULTIPLICITY
54aff467 223 init_interp();
ac27b0f5 224 PL_perl_destruct_level = 1;
54aff467
GS
225#else
226 if (PL_perl_destruct_level > 0)
227 init_interp();
228#endif
33f46ff6 229 /* Init the real globals (and main thread)? */
3280af22 230 if (!PL_linestr) {
2aea9f8a
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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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NC
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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NIS
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;
7996736c
MHM
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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NIS
288 PL_fdpid = newAV(); /* for remembering popen pids by fd */
289 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 290 PL_errors = newSVpvn("",0);
48c6b404 291 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
292 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
293 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 294#ifdef USE_ITHREADS
13137afc
AB
295 PL_regex_padav = newAV();
296 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
297 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 298#endif
e5dd39fc 299#ifdef USE_REENTRANT_API
59bd0823 300 Perl_reentrant_init(aTHX);
e5dd39fc 301#endif
3d47000e
AB
302
303 /* Note that strtab is a rather special HV. Assumptions are made
304 about not iterating on it, and not adding tie magic to it.
305 It is properly deallocated in perl_destruct() */
306 PL_strtab = newHV();
307
3d47000e
AB
308 HvSHAREKEYS_off(PL_strtab); /* mandatory */
309 hv_ksplit(PL_strtab, 512);
310
0631ea03
AB
311#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
312 _dyld_lookup_and_bind
313 ("__environ", (unsigned long *) &environ_pointer, NULL);
314#endif /* environ */
315
2f42fcb0
JH
316#ifndef PERL_MICRO
317# ifdef USE_ENVIRON_ARRAY
0631ea03 318 PL_origenviron = environ;
2f42fcb0 319# endif
0631ea03
AB
320#endif
321
5311654c 322 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 323 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
324 * BeOS has those, but returns the wrong value.
325 * The HZ if not originally defined has been by now
326 * been defined as CLK_TCK, if available. */
dbc1d986 327#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
328 PL_clocktick = sysconf(_SC_CLK_TCK);
329 if (PL_clocktick <= 0)
330#endif
331 PL_clocktick = HZ;
332
081fc587
AB
333 PL_stashcache = newHV();
334
e6830b13
NC
335 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
336 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 337
27da23d5
JH
338#ifdef HAS_MMAP
339 if (!PL_mmap_page_size) {
340#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
341 {
342 SETERRNO(0, SS_NORMAL);
343# ifdef _SC_PAGESIZE
344 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
345# else
346 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
347# endif
348 if ((long) PL_mmap_page_size < 0) {
349 if (errno) {
350 SV *error = ERRSV;
27da23d5 351 (void) SvUPGRADE(error, SVt_PV);
0510663f 352 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
353 }
354 else
355 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
356 }
357 }
358#else
359# ifdef HAS_GETPAGESIZE
360 PL_mmap_page_size = getpagesize();
361# else
362# if defined(I_SYS_PARAM) && defined(PAGESIZE)
363 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
364# endif
365# endif
366#endif
367 if (PL_mmap_page_size <= 0)
368 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
369 (IV) PL_mmap_page_size);
370 }
371#endif /* HAS_MMAP */
372
373#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
374 PL_timesbase.tms_utime = 0;
375 PL_timesbase.tms_stime = 0;
376 PL_timesbase.tms_cutime = 0;
377 PL_timesbase.tms_cstime = 0;
378#endif
379
8990e307 380 ENTER;
79072805
LW
381}
382
954c1994 383/*
62375a60
NIS
384=for apidoc nothreadhook
385
386Stub that provides thread hook for perl_destruct when there are
387no threads.
388
389=cut
390*/
391
392int
4e9e3734 393Perl_nothreadhook(pTHX)
62375a60
NIS
394{
395 return 0;
396}
397
41e4abd8
NC
398#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
399void
400Perl_dump_sv_child(pTHX_ SV *sv)
401{
402 ssize_t got;
bf357333
NC
403 const int sock = PL_dumper_fd;
404 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
405 union control_un control;
406 struct msghdr msg;
808ad2d0 407 struct iovec vec[2];
bf357333 408 struct cmsghdr *cmptr;
808ad2d0
NC
409 int returned_errno;
410 unsigned char buffer[256];
41e4abd8 411
bf357333 412 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
413 return;
414
415 PerlIO_flush(Perl_debug_log);
416
bf357333
NC
417 /* All these shenanigans are to pass a file descriptor over to our child for
418 it to dump out to. We can't let it hold open the file descriptor when it
419 forks, as the file descriptor it will dump to can turn out to be one end
420 of pipe that some other process will wait on for EOF. (So as it would
421 be open, the wait would be forever. */
422
423 msg.msg_control = control.control;
424 msg.msg_controllen = sizeof(control.control);
425 /* We're a connected socket so we don't need a destination */
426 msg.msg_name = NULL;
427 msg.msg_namelen = 0;
428 msg.msg_iov = vec;
808ad2d0 429 msg.msg_iovlen = 1;
bf357333
NC
430
431 cmptr = CMSG_FIRSTHDR(&msg);
432 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
433 cmptr->cmsg_level = SOL_SOCKET;
434 cmptr->cmsg_type = SCM_RIGHTS;
435 *((int *)CMSG_DATA(cmptr)) = 1;
436
437 vec[0].iov_base = (void*)&sv;
438 vec[0].iov_len = sizeof(sv);
439 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
440
441 if(got < 0) {
bf357333 442 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
443 abort();
444 }
bf357333
NC
445 if(got < sizeof(sv)) {
446 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
447 abort();
448 }
449
808ad2d0
NC
450 /* Return protocol is
451 int: errno value
452 unsigned char: length of location string (0 for empty)
453 unsigned char*: string (not terminated)
454 */
455 vec[0].iov_base = (void*)&returned_errno;
456 vec[0].iov_len = sizeof(returned_errno);
457 vec[1].iov_base = buffer;
458 vec[1].iov_len = 1;
459
460 got = readv(sock, vec, 2);
41e4abd8
NC
461
462 if(got < 0) {
463 perror("Debug leaking scalars parent read failed");
808ad2d0 464 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
465 abort();
466 }
808ad2d0 467 if(got < sizeof(returned_errno) + 1) {
41e4abd8 468 perror("Debug leaking scalars parent short read");
808ad2d0 469 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
470 abort();
471 }
472
808ad2d0
NC
473 if (*buffer) {
474 got = read(sock, buffer + 1, *buffer);
475 if(got < 0) {
476 perror("Debug leaking scalars parent read 2 failed");
477 PerlIO_flush(PerlIO_stderr());
478 abort();
479 }
480
481 if(got < *buffer) {
482 perror("Debug leaking scalars parent short read 2");
483 PerlIO_flush(PerlIO_stderr());
484 abort();
485 }
486 }
487
488 if (returned_errno || *buffer) {
489 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
490 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
491 returned_errno, strerror(returned_errno));
41e4abd8
NC
492 }
493}
494#endif
495
62375a60 496/*
954c1994
GS
497=for apidoc perl_destruct
498
499Shuts down a Perl interpreter. See L<perlembed>.
500
501=cut
502*/
503
31d77e54 504int
0cb96387 505perl_destruct(pTHXx)
79072805 506{
27da23d5 507 dVAR;
7c474504 508 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 509 HV *hv;
2aa47728 510#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
511 pid_t child;
512#endif
8990e307 513
9d4ba2ae
AL
514 PERL_UNUSED_ARG(my_perl);
515
7766f137
GS
516 /* wait for all pseudo-forked children to finish */
517 PERL_WAIT_FOR_CHILDREN;
518
3280af22 519 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
520#ifdef DEBUGGING
521 {
9d4ba2ae
AL
522 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
523 if (s) {
e1ec3a88 524 const int i = atoi(s);
5f05dabc
PP
525 if (destruct_level < i)
526 destruct_level = i;
527 }
4633a7c4
LW
528 }
529#endif
530
27da23d5 531 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
532 dJMPENV;
533 int x = 0;
534
535 JMPENV_PUSH(x);
1b6737cc 536 PERL_UNUSED_VAR(x);
f3faeb53
AB
537 if (PL_endav && !PL_minus_c)
538 call_list(PL_scopestack_ix, PL_endav);
539 JMPENV_POP;
26f423df 540 }
f3faeb53 541 LEAVE;
a0d0e21e
LW
542 FREETMPS;
543
e00b64d4 544 /* Need to flush since END blocks can produce output */
f13a2bc0 545 my_fflush_all();
e00b64d4 546
62375a60
NIS
547 if (CALL_FPTR(PL_threadhook)(aTHX)) {
548 /* Threads hook has vetoed further cleanup */
b47cad08 549 return STATUS_NATIVE_EXPORT;
62375a60
NIS
550 }
551
2aa47728
NC
552#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
553 if (destruct_level != 0) {
554 /* Fork here to create a child. Our child's job is to preserve the
555 state of scalars prior to destruction, so that we can instruct it
556 to dump any scalars that we later find have leaked.
557 There's no subtlety in this code - it assumes POSIX, and it doesn't
558 fail gracefully */
559 int fd[2];
560
561 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
562 perror("Debug leaking scalars socketpair failed");
563 abort();
564 }
565
566 child = fork();
567 if(child == -1) {
568 perror("Debug leaking scalars fork failed");
569 abort();
570 }
571 if (!child) {
572 /* We are the child */
3125a5a4
NC
573 const int sock = fd[1];
574 const int debug_fd = PerlIO_fileno(Perl_debug_log);
575 int f;
808ad2d0
NC
576 const char *where;
577 /* Our success message is an integer 0, and a char 0 */
578 static const char success[sizeof(int) + 1];
3125a5a4 579
2aa47728 580 close(fd[0]);
2aa47728 581
3125a5a4
NC
582 /* We need to close all other file descriptors otherwise we end up
583 with interesting hangs, where the parent closes its end of a
584 pipe, and sits waiting for (another) child to terminate. Only
585 that child never terminates, because it never gets EOF, because
bf357333
NC
586 we also have the far end of the pipe open. We even need to
587 close the debugging fd, because sometimes it happens to be one
588 end of a pipe, and a process is waiting on the other end for
589 EOF. Normally it would be closed at some point earlier in
590 destruction, but if we happen to cause the pipe to remain open,
591 EOF never occurs, and we get an infinite hang. Hence all the
592 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
593
594 f = sysconf(_SC_OPEN_MAX);
595 if(f < 0) {
808ad2d0
NC
596 where = "sysconf failed";
597 goto abort;
3125a5a4
NC
598 }
599 while (f--) {
600 if (f == sock)
601 continue;
3125a5a4
NC
602 close(f);
603 }
604
2aa47728
NC
605 while (1) {
606 SV *target;
bf357333
NC
607 union control_un control;
608 struct msghdr msg;
609 struct iovec vec[1];
610 struct cmsghdr *cmptr;
611 ssize_t got;
612 int got_fd;
613
614 msg.msg_control = control.control;
615 msg.msg_controllen = sizeof(control.control);
616 /* We're a connected socket so we don't need a source */
617 msg.msg_name = NULL;
618 msg.msg_namelen = 0;
619 msg.msg_iov = vec;
620 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
621
622 vec[0].iov_base = (void*)&target;
623 vec[0].iov_len = sizeof(target);
624
625 got = recvmsg(sock, &msg, 0);
2aa47728
NC
626
627 if(got == 0)
628 break;
629 if(got < 0) {
808ad2d0
NC
630 where = "recv failed";
631 goto abort;
2aa47728
NC
632 }
633 if(got < sizeof(target)) {
808ad2d0
NC
634 where = "short recv";
635 goto abort;
2aa47728 636 }
bf357333 637
808ad2d0
NC
638 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
639 where = "no cmsg";
640 goto abort;
641 }
642 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
643 where = "wrong cmsg_len";
644 goto abort;
645 }
646 if(cmptr->cmsg_level != SOL_SOCKET) {
647 where = "wrong cmsg_level";
648 goto abort;
649 }
650 if(cmptr->cmsg_type != SCM_RIGHTS) {
651 where = "wrong cmsg_type";
652 goto abort;
653 }
bf357333
NC
654
655 got_fd = *(int*)CMSG_DATA(cmptr);
656 /* For our last little bit of trickery, put the file descriptor
657 back into Perl_debug_log, as if we never actually closed it
658 */
808ad2d0
NC
659 if(got_fd != debug_fd) {
660 if (dup2(got_fd, debug_fd) == -1) {
661 where = "dup2";
662 goto abort;
663 }
664 }
2aa47728 665 sv_dump(target);
bf357333 666
2aa47728
NC
667 PerlIO_flush(Perl_debug_log);
668
808ad2d0 669 got = write(sock, &success, sizeof(success));
2aa47728
NC
670
671 if(got < 0) {
808ad2d0
NC
672 where = "write failed";
673 goto abort;
2aa47728 674 }
808ad2d0
NC
675 if(got < sizeof(success)) {
676 where = "short write";
677 goto abort;
2aa47728
NC
678 }
679 }
680 _exit(0);
808ad2d0
NC
681 abort:
682 {
683 int send_errno = errno;
684 unsigned char length = (unsigned char) strlen(where);
685 struct iovec failure[3] = {
686 {(void*)&send_errno, sizeof(send_errno)},
687 {&length, 1},
688 {(void*)where, length}
689 };
690 int got = writev(sock, failure, 3);
691 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
692 in the parent if we try to read from the socketpair after the
693 child has exited, even if there was data to read.
694 So sleep a bit to give the parent a fighting chance of
695 reading the data. */
696 sleep(2);
697 _exit((got == -1) ? errno : 0);
698 }
bf357333 699 /* End of child. */
2aa47728 700 }
41e4abd8 701 PL_dumper_fd = fd[0];
2aa47728
NC
702 close(fd[1]);
703 }
704#endif
705
ff0cee69
PP
706 /* We must account for everything. */
707
708 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
709 /* Do this now, because destroying ops can cause new SVs to be generated
710 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
711 PL_curcop to point to a valid op from which the filename structure
712 member is copied. */
713 PL_curcop = &PL_compiling;
3280af22 714 if (PL_main_root) {
4e380990
DM
715 /* ensure comppad/curpad to refer to main's pad */
716 if (CvPADLIST(PL_main_cv)) {
717 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
718 }
3280af22
NIS
719 op_free(PL_main_root);
720 PL_main_root = Nullop;
a0d0e21e 721 }
3280af22
NIS
722 PL_main_start = Nullop;
723 SvREFCNT_dec(PL_main_cv);
724 PL_main_cv = Nullcv;
24d3c518 725 PL_dirty = TRUE;
ff0cee69 726
13621cfb
NIS
727 /* Tell PerlIO we are about to tear things apart in case
728 we have layers which are using resources that should
729 be cleaned up now.
730 */
731
732 PerlIO_destruct(aTHX);
733
3280af22 734 if (PL_sv_objcount) {
a0d0e21e
LW
735 /*
736 * Try to destruct global references. We do this first so that the
737 * destructors and destructees still exist. Some sv's might remain.
738 * Non-referenced objects are on their own.
739 */
a0d0e21e 740 sv_clean_objs();
bf9cdc68 741 PL_sv_objcount = 0;
8990e307
LW
742 }
743
5cd24f17 744 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
745 SvREFCNT_dec(PL_warnhook);
746 PL_warnhook = Nullsv;
747 SvREFCNT_dec(PL_diehook);
748 PL_diehook = Nullsv;
5cd24f17 749
4b556e6c 750 /* call exit list functions */
3280af22 751 while (PL_exitlistlen-- > 0)
acfe0abc 752 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 753
3280af22 754 Safefree(PL_exitlist);
4b556e6c 755
1c4916e5
CB
756 PL_exitlist = NULL;
757 PL_exitlistlen = 0;
758
a0d0e21e 759 if (destruct_level == 0){
8990e307 760
a0d0e21e 761 DEBUG_P(debprofdump());
ac27b0f5 762
56a2bab7
NIS
763#if defined(PERLIO_LAYERS)
764 /* No more IO - including error messages ! */
765 PerlIO_cleanup(aTHX);
766#endif
767
a0d0e21e 768 /* The exit() function will do everything that needs doing. */
b47cad08 769 return STATUS_NATIVE_EXPORT;
a0d0e21e 770 }
5dd60ef7 771
551a8b83 772 /* jettison our possibly duplicated environment */
4b647fb0
DM
773 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
774 * so we certainly shouldn't free it here
775 */
2f42fcb0 776#ifndef PERL_MICRO
4b647fb0 777#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 778 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
779#ifdef USE_ITHREADS
780 /* only main thread can free environ[0] contents */
781 && PL_curinterp == aTHX
782#endif
783 )
784 {
551a8b83
JH
785 I32 i;
786
787 for (i = 0; environ[i]; i++)
4b420006 788 safesysfree(environ[i]);
0631ea03 789
4b420006
JH
790 /* Must use safesysfree() when working with environ. */
791 safesysfree(environ);
551a8b83
JH
792
793 environ = PL_origenviron;
794 }
795#endif
2f42fcb0 796#endif /* !PERL_MICRO */
551a8b83 797
804ffa60
DM
798 /* reset so print() ends up where we expect */
799 setdefout(Nullgv);
800
5f8cb046
DM
801#ifdef USE_ITHREADS
802 /* the syntax tree is shared between clones
803 * so op_free(PL_main_root) only ReREFCNT_dec's
804 * REGEXPs in the parent interpreter
805 * we need to manually ReREFCNT_dec for the clones
806 */
807 {
808 I32 i = AvFILLp(PL_regex_padav) + 1;
809 SV **ary = AvARRAY(PL_regex_padav);
810
811 while (i) {
35061a7e 812 SV *resv = ary[--i];
35061a7e
DM
813
814 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 815 /* this is PL_reg_curpm, already freed
35061a7e
DM
816 * flag is set in regexec.c:S_regtry
817 */
818 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 819 }
1cc8b4c5
AB
820 else if(SvREPADTMP(resv)) {
821 SvREPADTMP_off(resv);
822 }
a560f29b
NC
823 else if(SvIOKp(resv)) {
824 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
825 ReREFCNT_dec(re);
826 }
827 }
828 }
829 SvREFCNT_dec(PL_regex_padav);
830 PL_regex_padav = Nullav;
831 PL_regex_pad = NULL;
832#endif
833
081fc587
AB
834 SvREFCNT_dec((SV*) PL_stashcache);
835 PL_stashcache = NULL;
836
5f05dabc
PP
837 /* loosen bonds of global variables */
838
3280af22
NIS
839 if(PL_rsfp) {
840 (void)PerlIO_close(PL_rsfp);
841 PL_rsfp = Nullfp;
8ebc5c01
PP
842 }
843
844 /* Filters for program text */
3280af22
NIS
845 SvREFCNT_dec(PL_rsfp_filters);
846 PL_rsfp_filters = Nullav;
8ebc5c01
PP
847
848 /* switches */
3280af22
NIS
849 PL_preprocess = FALSE;
850 PL_minus_n = FALSE;
851 PL_minus_p = FALSE;
852 PL_minus_l = FALSE;
853 PL_minus_a = FALSE;
854 PL_minus_F = FALSE;
855 PL_doswitches = FALSE;
599cee73 856 PL_dowarn = G_WARN_OFF;
3280af22
NIS
857 PL_doextract = FALSE;
858 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
859 PL_unsafe = FALSE;
860
861 Safefree(PL_inplace);
862 PL_inplace = Nullch;
a7cb1f99 863 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
864
865 if (PL_e_script) {
866 SvREFCNT_dec(PL_e_script);
867 PL_e_script = Nullsv;
8ebc5c01
PP
868 }
869
bf9cdc68
RG
870 PL_perldb = 0;
871
8ebc5c01
PP
872 /* magical thingies */
873
7889fe52
NIS
874 SvREFCNT_dec(PL_ofs_sv); /* $, */
875 PL_ofs_sv = Nullsv;
5f05dabc 876
7889fe52
NIS
877 SvREFCNT_dec(PL_ors_sv); /* $\ */
878 PL_ors_sv = Nullsv;
8ebc5c01 879
3280af22
NIS
880 SvREFCNT_dec(PL_rs); /* $/ */
881 PL_rs = Nullsv;
dc92893f 882
d33b2eba
GS
883 PL_multiline = 0; /* $* */
884 Safefree(PL_osname); /* $^O */
885 PL_osname = Nullch;
5f05dabc 886
3280af22
NIS
887 SvREFCNT_dec(PL_statname);
888 PL_statname = Nullsv;
889 PL_statgv = Nullgv;
5f05dabc 890
8ebc5c01
PP
891 /* defgv, aka *_ should be taken care of elsewhere */
892
8ebc5c01 893 /* clean up after study() */
3280af22
NIS
894 SvREFCNT_dec(PL_lastscream);
895 PL_lastscream = Nullsv;
896 Safefree(PL_screamfirst);
897 PL_screamfirst = 0;
898 Safefree(PL_screamnext);
899 PL_screamnext = 0;
8ebc5c01 900
7d5ea4e7
GS
901 /* float buffer */
902 Safefree(PL_efloatbuf);
903 PL_efloatbuf = Nullch;
904 PL_efloatsize = 0;
905
8ebc5c01 906 /* startup and shutdown function lists */
3280af22 907 SvREFCNT_dec(PL_beginav);
5a837c8f 908 SvREFCNT_dec(PL_beginav_save);
3280af22 909 SvREFCNT_dec(PL_endav);
7d30b5c4 910 SvREFCNT_dec(PL_checkav);
ece599bd 911 SvREFCNT_dec(PL_checkav_save);
3280af22
NIS
912 SvREFCNT_dec(PL_initav);
913 PL_beginav = Nullav;
5a837c8f 914 PL_beginav_save = Nullav;
3280af22 915 PL_endav = Nullav;
7d30b5c4 916 PL_checkav = Nullav;
ece599bd 917 PL_checkav_save = Nullav;
3280af22 918 PL_initav = Nullav;
5618dfe8 919
8ebc5c01 920 /* shortcuts just get cleared */
3280af22 921 PL_envgv = Nullgv;
3280af22
NIS
922 PL_incgv = Nullgv;
923 PL_hintgv = Nullgv;
924 PL_errgv = Nullgv;
925 PL_argvgv = Nullgv;
926 PL_argvoutgv = Nullgv;
927 PL_stdingv = Nullgv;
bf49b057 928 PL_stderrgv = Nullgv;
3280af22
NIS
929 PL_last_in_gv = Nullgv;
930 PL_replgv = Nullgv;
bf9cdc68
RG
931 PL_DBgv = Nullgv;
932 PL_DBline = Nullgv;
933 PL_DBsub = Nullgv;
934 PL_DBsingle = Nullsv;
935 PL_DBtrace = Nullsv;
936 PL_DBsignal = Nullsv;
937 PL_DBassertion = Nullsv;
938 PL_DBcv = Nullcv;
939 PL_dbargs = Nullav;
5c831c24 940 PL_debstash = Nullhv;
8ebc5c01 941
7a1c5554
GS
942 SvREFCNT_dec(PL_argvout_stack);
943 PL_argvout_stack = Nullav;
8ebc5c01 944
5c831c24
GS
945 SvREFCNT_dec(PL_modglobal);
946 PL_modglobal = Nullhv;
947 SvREFCNT_dec(PL_preambleav);
948 PL_preambleav = Nullav;
949 SvREFCNT_dec(PL_subname);
950 PL_subname = Nullsv;
951 SvREFCNT_dec(PL_linestr);
952 PL_linestr = Nullsv;
953 SvREFCNT_dec(PL_pidstatus);
954 PL_pidstatus = Nullhv;
955 SvREFCNT_dec(PL_toptarget);
956 PL_toptarget = Nullsv;
957 SvREFCNT_dec(PL_bodytarget);
958 PL_bodytarget = Nullsv;
959 PL_formtarget = Nullsv;
960
d33b2eba 961 /* free locale stuff */
b9582b6a 962#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
963 Safefree(PL_collation_name);
964 PL_collation_name = Nullch;
b9582b6a 965#endif
d33b2eba 966
b9582b6a 967#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
968 Safefree(PL_numeric_name);
969 PL_numeric_name = Nullch;
a453c169 970 SvREFCNT_dec(PL_numeric_radix_sv);
bf9cdc68 971 PL_numeric_radix_sv = Nullsv;
b9582b6a 972#endif
d33b2eba 973
5c831c24
GS
974 /* clear utf8 character classes */
975 SvREFCNT_dec(PL_utf8_alnum);
976 SvREFCNT_dec(PL_utf8_alnumc);
977 SvREFCNT_dec(PL_utf8_ascii);
978 SvREFCNT_dec(PL_utf8_alpha);
979 SvREFCNT_dec(PL_utf8_space);
980 SvREFCNT_dec(PL_utf8_cntrl);
981 SvREFCNT_dec(PL_utf8_graph);
982 SvREFCNT_dec(PL_utf8_digit);
983 SvREFCNT_dec(PL_utf8_upper);
984 SvREFCNT_dec(PL_utf8_lower);
985 SvREFCNT_dec(PL_utf8_print);
986 SvREFCNT_dec(PL_utf8_punct);
987 SvREFCNT_dec(PL_utf8_xdigit);
988 SvREFCNT_dec(PL_utf8_mark);
989 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 990 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 991 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 992 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
993 SvREFCNT_dec(PL_utf8_idstart);
994 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS
995 PL_utf8_alnum = Nullsv;
996 PL_utf8_alnumc = Nullsv;
997 PL_utf8_ascii = Nullsv;
998 PL_utf8_alpha = Nullsv;
999 PL_utf8_space = Nullsv;
1000 PL_utf8_cntrl = Nullsv;
1001 PL_utf8_graph = Nullsv;
1002 PL_utf8_digit = Nullsv;
1003 PL_utf8_upper = Nullsv;
1004 PL_utf8_lower = Nullsv;
1005 PL_utf8_print = Nullsv;
1006 PL_utf8_punct = Nullsv;
1007 PL_utf8_xdigit = Nullsv;
1008 PL_utf8_mark = Nullsv;
1009 PL_utf8_toupper = Nullsv;
1010 PL_utf8_totitle = Nullsv;
1011 PL_utf8_tolower = Nullsv;
b4e400f9 1012 PL_utf8_tofold = Nullsv;
82686b01
JH
1013 PL_utf8_idstart = Nullsv;
1014 PL_utf8_idcont = Nullsv;
5c831c24 1015
971a9dd3
GS
1016 if (!specialWARN(PL_compiling.cop_warnings))
1017 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 1018 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
1019 if (!specialCopIO(PL_compiling.cop_io))
1020 SvREFCNT_dec(PL_compiling.cop_io);
1021 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS
1022 CopFILE_free(&PL_compiling);
1023 CopSTASH_free(&PL_compiling);
5c831c24 1024
a0d0e21e 1025 /* Prepare to destruct main symbol table. */
5f05dabc 1026
3280af22
NIS
1027 hv = PL_defstash;
1028 PL_defstash = 0;
a0d0e21e 1029 SvREFCNT_dec(hv);
5c831c24
GS
1030 SvREFCNT_dec(PL_curstname);
1031 PL_curstname = Nullsv;
a0d0e21e 1032
5a844595
GS
1033 /* clear queued errors */
1034 SvREFCNT_dec(PL_errors);
1035 PL_errors = Nullsv;
1036
a0d0e21e 1037 FREETMPS;
0453d815 1038 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1039 if (PL_scopestack_ix != 0)
9014280d 1040 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1041 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1042 (long)PL_scopestack_ix);
1043 if (PL_savestack_ix != 0)
9014280d 1044 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1045 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1046 (long)PL_savestack_ix);
1047 if (PL_tmps_floor != -1)
9014280d 1048 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1049 (long)PL_tmps_floor + 1);
a0d0e21e 1050 if (cxstack_ix != -1)
9014280d 1051 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1052 (long)cxstack_ix + 1);
a0d0e21e 1053 }
8990e307
LW
1054
1055 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1056 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1057 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1058
1059 /* the 2 is for PL_fdpid and PL_strtab */
1060 while (PL_sv_count > 2 && sv_clean_all())
1061 ;
1062
d33b2eba
GS
1063 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1064 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1065 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1066 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1067
d4777f27
GS
1068 AvREAL_off(PL_fdpid); /* no surviving entries */
1069 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
1070 PL_fdpid = Nullav;
1071
6c644e78
GS
1072#ifdef HAVE_INTERP_INTERN
1073 sys_intern_clear();
1074#endif
1075
6e72f9df
PP
1076 /* Destruct the global string table. */
1077 {
1078 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1079 * so that sv_free() won't fail on them.
80459961
NC
1080 * Now that the global string table is using a single hunk of memory
1081 * for both HE and HEK, we either need to explicitly unshare it the
1082 * correct way, or actually free things here.
6e72f9df 1083 */
80459961
NC
1084 I32 riter = 0;
1085 const I32 max = HvMAX(PL_strtab);
1086 HE **array = HvARRAY(PL_strtab);
1087 HE *hent = array[0];
1088
6e72f9df 1089 for (;;) {
0453d815 1090 if (hent && ckWARN_d(WARN_INTERNAL)) {
80459961 1091 HE *next = HeNEXT(hent);
9014280d 1092 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1093 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df 1094 HeVAL(hent) - Nullsv, HeKEY(hent));
80459961
NC
1095 Safefree(hent);
1096 hent = next;
6e72f9df
PP
1097 }
1098 if (!hent) {
1099 if (++riter > max)
1100 break;
1101 hent = array[riter];
1102 }
1103 }
80459961
NC
1104
1105 Safefree(array);
1106 HvARRAY(PL_strtab) = 0;
1107 HvTOTALKEYS(PL_strtab) = 0;
1108 HvFILL(PL_strtab) = 0;
6e72f9df 1109 }
3280af22 1110 SvREFCNT_dec(PL_strtab);
6e72f9df 1111
e652bb2f 1112#ifdef USE_ITHREADS
c21d1a0f 1113 /* free the pointer tables used for cloning */
a0739874 1114 ptr_table_free(PL_ptr_table);
bf9cdc68 1115 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1116#endif
a0739874 1117
d33b2eba
GS
1118 /* free special SVs */
1119
1120 SvREFCNT(&PL_sv_yes) = 0;
1121 sv_clear(&PL_sv_yes);
1122 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1123 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1124
1125 SvREFCNT(&PL_sv_no) = 0;
1126 sv_clear(&PL_sv_no);
1127 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1128 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1129
9f375a43
DM
1130 {
1131 int i;
1132 for (i=0; i<=2; i++) {
1133 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1134 sv_clear(PERL_DEBUG_PAD(i));
1135 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1136 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1137 }
1138 }
1139
0453d815 1140 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1141 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1142
eba0f806
DM
1143#ifdef DEBUG_LEAKING_SCALARS
1144 if (PL_sv_count != 0) {
1145 SV* sva;
1146 SV* sv;
1147 register SV* svend;
1148
1149 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1150 svend = &sva[SvREFCNT(sva)];
1151 for (sv = sva + 1; sv < svend; ++sv) {
1152 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1153 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1154 " flags=0x%"UVxf
fd0854ff
DM
1155 " refcnt=%"UVuf pTHX__FORMAT "\n"
1156 "\tallocated at %s:%d %s %s%s\n",
1157 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1158 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1159 sv->sv_debug_line,
1160 sv->sv_debug_inpad ? "for" : "by",
1161 sv->sv_debug_optype ?
1162 PL_op_name[sv->sv_debug_optype]: "(none)",
1163 sv->sv_debug_cloned ? " (cloned)" : ""
1164 );
2aa47728 1165#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1166 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1167#endif
eba0f806
DM
1168 }
1169 }
1170 }
1171 }
2aa47728
NC
1172#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1173 {
1174 int status;
1175 fd_set rset;
1176 /* Wait for up to 4 seconds for child to terminate.
1177 This seems to be the least effort way of timing out on reaping
1178 its exit status. */
1179 struct timeval waitfor = {4, 0};
41e4abd8 1180 int sock = PL_dumper_fd;
2aa47728
NC
1181
1182 shutdown(sock, 1);
1183 FD_ZERO(&rset);
1184 FD_SET(sock, &rset);
1185 select(sock + 1, &rset, NULL, NULL, &waitfor);
1186 waitpid(child, &status, WNOHANG);
1187 close(sock);
1188 }
1189#endif
eba0f806 1190#endif
bf9cdc68 1191 PL_sv_count = 0;
eba0f806
DM
1192
1193
56a2bab7 1194#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1195 /* No more IO - including error messages ! */
1196 PerlIO_cleanup(aTHX);
1197#endif
1198
9f4bd222
NIS
1199 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1200 as currently layers use it rather than Nullsv as a marker
1201 for no arg - and will try and SvREFCNT_dec it.
1202 */
1203 SvREFCNT(&PL_sv_undef) = 0;
1204 SvREADONLY_off(&PL_sv_undef);
1205
3280af22 1206 Safefree(PL_origfilename);
bf9cdc68 1207 PL_origfilename = Nullch;
3280af22 1208 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1209 PL_reg_start_tmp = (char**)NULL;
1210 PL_reg_start_tmpl = 0;
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':
3280af22
NIS
1712 if (!PL_preambleav)
1713 PL_preambleav = newAV();
1714 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1715 if (*++s != ':') {
efcaa95b
YST
1716 STRLEN opts;
1717
3280af22 1718 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1719#ifdef VMS
6b88bc9c 1720 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1721#else
3280af22 1722 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1723#endif
efcaa95b
YST
1724 opts = SvCUR(PL_Sv);
1725
3280af22 1726 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1727# ifdef DEBUGGING
3280af22 1728 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1729# endif
6224f72b 1730# ifdef MULTIPLICITY
8f872242 1731 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1732# endif
4d1ff10f
AB
1733# ifdef USE_5005THREADS
1734 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1735# endif
ac5e8965
JH
1736# ifdef USE_ITHREADS
1737 sv_catpv(PL_Sv," USE_ITHREADS");
1738# endif
10cc9d2a
JH
1739# ifdef USE_64_BIT_INT
1740 sv_catpv(PL_Sv," USE_64_BIT_INT");
1741# endif
1742# ifdef USE_64_BIT_ALL
1743 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1744# endif
1745# ifdef USE_LONG_DOUBLE
1746 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1747# endif
53430762
JH
1748# ifdef USE_LARGE_FILES
1749 sv_catpv(PL_Sv," USE_LARGE_FILES");
1750# endif
ac5e8965
JH
1751# ifdef USE_SOCKS
1752 sv_catpv(PL_Sv," USE_SOCKS");
1753# endif
20ef40cf
GA
1754# ifdef USE_SITECUSTOMIZE
1755 sv_catpv(PL_Sv," USE_SITECUSTOMIZE");
1756# endif
b363f7ed
GS
1757# ifdef PERL_IMPLICIT_CONTEXT
1758 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1759# endif
1760# ifdef PERL_IMPLICIT_SYS
1761 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1762# endif
efcaa95b
YST
1763
1764 while (SvCUR(PL_Sv) > opts+76) {
1765 /* find last space after "options: " and before col 76 */
1766
dd374669
AL
1767 const char *space;
1768 char *pv = SvPV_nolen(PL_Sv);
1769 const char c = pv[opts+76];
efcaa95b
YST
1770 pv[opts+76] = '\0';
1771 space = strrchr(pv+opts+26, ' ');
1772 pv[opts+76] = c;
1773 if (!space) break; /* "Can't happen" */
1774
1775 /* break the line before that space */
1776
1777 opts = space - pv;
1778 sv_insert(PL_Sv, opts, 0,
1779 "\\n ", 25);
1780 }
1781
3280af22 1782 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1783
6224f72b
GS
1784#if defined(LOCAL_PATCH_COUNT)
1785 if (LOCAL_PATCH_COUNT > 0) {
1786 int i;
3280af22 1787 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1788 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1789 if (PL_localpatches[i])
acb03d05
AB
1790 Perl_sv_catpvf(aTHX_ PL_Sv,"q%c\t%s\n%c,",
1791 0, PL_localpatches[i], 0);
6224f72b
GS
1792 }
1793 }
1794#endif
cea2e8a9 1795 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1796#ifdef __DATE__
1797# ifdef __TIME__
cea2e8a9 1798 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1799# else
cea2e8a9 1800 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1801# endif
1802#endif
3280af22 1803 sv_catpv(PL_Sv, "; \
6224f72b 1804$\"=\"\\n \"; \
69fcd688
JH
1805@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1806#ifdef __CYGWIN__
1807 sv_catpv(PL_Sv,"\
1808push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1809#endif
1810 sv_catpv(PL_Sv, "\
6224f72b
GS
1811print \" \\%ENV:\\n @env\\n\" if @env; \
1812print \" \\@INC:\\n @INC\\n\";");
1813 }
1814 else {
3280af22
NIS
1815 PL_Sv = newSVpv("config_vars(qw(",0);
1816 sv_catpv(PL_Sv, ++s);
1817 sv_catpv(PL_Sv, "))");
6224f72b
GS
1818 s += strlen(s);
1819 }
3280af22 1820 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1821 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1822 goto reswitch;
1823 case 'x':
3280af22 1824 PL_doextract = TRUE;
6224f72b
GS
1825 s++;
1826 if (*s)
f4c556ac 1827 cddir = s;
6224f72b
GS
1828 break;
1829 case 0:
1830 break;
1831 case '-':
1832 if (!*++s || isSPACE(*s)) {
1833 argc--,argv++;
1834 goto switch_end;
1835 }
1836 /* catch use of gnu style long options */
1837 if (strEQ(s, "version")) {
dd374669 1838 s = (char *)"v";
6224f72b
GS
1839 goto reswitch;
1840 }
1841 if (strEQ(s, "help")) {
dd374669 1842 s = (char *)"h";
6224f72b
GS
1843 goto reswitch;
1844 }
1845 s--;
1846 /* FALL THROUGH */
1847 default:
cea2e8a9 1848 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1849 }
1850 }
6224f72b 1851 switch_end:
54310121 1852
f675dbe5
CB
1853 if (
1854#ifndef SECURE_INTERNAL_GETENV
1855 !PL_tainting &&
1856#endif
cf756827 1857 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1858 {
e1ec3a88 1859 const char *popt = s;
74288ac8
GS
1860 while (isSPACE(*s))
1861 s++;
317ea90d 1862 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1863 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1864 PL_tainting = TRUE;
317ea90d
MS
1865 PL_taint_warn = FALSE;
1866 }
74288ac8 1867 else {
cf756827 1868 char *popt_copy = Nullch;
74288ac8 1869 while (s && *s) {
4ea8f8fb 1870 char *d;
74288ac8
GS
1871 while (isSPACE(*s))
1872 s++;
1873 if (*s == '-') {
1874 s++;
1875 if (isSPACE(*s))
1876 continue;
1877 }
4ea8f8fb 1878 d = s;
74288ac8
GS
1879 if (!*s)
1880 break;
06492da6 1881 if (!strchr("DIMUdmtwA", *s))
cea2e8a9 1882 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1883 while (++s && *s) {
1884 if (isSPACE(*s)) {
cf756827
GS
1885 if (!popt_copy) {
1886 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1887 s = popt_copy + (s - popt);
1888 d = popt_copy + (d - popt);
1889 }
4ea8f8fb
MS
1890 *s++ = '\0';
1891 break;
1892 }
1893 }
1c4db469 1894 if (*d == 't') {
317ea90d
MS
1895 if( !PL_tainting ) {
1896 PL_taint_warn = TRUE;
1897 PL_tainting = TRUE;
1898 }
1c4db469
RGS
1899 } else {
1900 moreswitches(d);
1901 }
6224f72b 1902 }
6224f72b
GS
1903 }
1904 }
a0d0e21e 1905
20ef40cf
GA
1906#ifdef USE_SITECUSTOMIZE
1907 if (!minus_f) {
1908 if (!PL_preambleav)
1909 PL_preambleav = newAV();
1910 av_unshift(PL_preambleav, 1);
1911 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
1912 }
1913#endif
1914
317ea90d
MS
1915 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1916 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1917 }
1918
6224f72b
GS
1919 if (!scriptname)
1920 scriptname = argv[0];
3280af22 1921 if (PL_e_script) {
6224f72b
GS
1922 argc++,argv--;
1923 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1924 }
1925 else if (scriptname == Nullch) {
1926#ifdef MSDOS
1927 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1928 moreswitches("h");
1929#endif
1930 scriptname = "-";
1931 }
1932
b7975bdd
NC
1933 /* Set $^X early so that it can be used for relocatable paths in @INC */
1934 assert (!PL_tainted);
1935 TAINT;
1936 S_set_caret_X(aTHX);
1937 TAINT_NOT;
6224f72b
GS
1938 init_perllib();
1939
c5cccb17 1940 open_script(scriptname,dosearch,sv);
6224f72b 1941
c5cccb17 1942 validate_suid(validarg, scriptname);
6224f72b 1943
64ca3a65 1944#ifndef PERL_MICRO
0b5b802d
GS
1945#if defined(SIGCHLD) || defined(SIGCLD)
1946 {
1947#ifndef SIGCHLD
1948# define SIGCHLD SIGCLD
1949#endif
1950 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1951 if (sigstate == SIG_IGN) {
1952 if (ckWARN(WARN_SIGNAL))
9014280d 1953 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
1954 "Can't ignore signal CHLD, forcing to default");
1955 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1956 }
1957 }
1958#endif
64ca3a65 1959#endif
0b5b802d 1960
bf4acbe4
GS
1961#ifdef MACOS_TRADITIONAL
1962 if (PL_doextract || gMacPerl_AlwaysExtract) {
1963#else
f4c556ac 1964 if (PL_doextract) {
bf4acbe4 1965#endif
6224f72b 1966 find_beginning();
dd374669 1967 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
f4c556ac
GS
1968 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1969
1970 }
6224f72b 1971
3280af22
NIS
1972 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1973 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1974 CvUNIQUE_on(PL_compcv);
1975
dd2155a4 1976 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 1977#ifdef USE_5005THREADS
533c011a
NIS
1978 CvOWNER(PL_compcv) = 0;
1979 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1980 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1981#endif /* USE_5005THREADS */
6224f72b 1982
0c4f7ff0 1983 boot_core_PerlIO();
6224f72b 1984 boot_core_UNIVERSAL();
09bef843 1985 boot_core_xsutils();
6224f72b
GS
1986
1987 if (xsinit)
acfe0abc 1988 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1989#ifndef PERL_MICRO
ed79a026 1990#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1991 init_os_extras();
6224f72b 1992#endif
64ca3a65 1993#endif
6224f72b 1994
29209bc5 1995#ifdef USE_SOCKS
1b9c9cf5
DH
1996# ifdef HAS_SOCKS5_INIT
1997 socks5_init(argv[0]);
1998# else
29209bc5 1999 SOCKSinit(argv[0]);
1b9c9cf5 2000# endif
ac27b0f5 2001#endif
29209bc5 2002
6224f72b
GS
2003 init_predump_symbols();
2004 /* init_postdump_symbols not currently designed to be called */
2005 /* more than once (ENV isn't cleared first, for example) */
2006 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2007 if (!PL_do_undump)
6224f72b
GS
2008 init_postdump_symbols(argc,argv,env);
2009
27da23d5
JH
2010 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2011 * or explicitly in some platforms.
085a54d9 2012 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2013 * look like the user wants to use UTF-8. */
27da23d5
JH
2014#if defined(SYMBIAN)
2015 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2016#endif
06e66572
JH
2017 if (PL_unicode) {
2018 /* Requires init_predump_symbols(). */
a05d7ebb 2019 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2020 IO* io;
2021 PerlIO* fp;
2022 SV* sv;
2023
a05d7ebb 2024 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2025 * and the default open disciplines. */
a05d7ebb
JH
2026 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2027 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2028 (fp = IoIFP(io)))
2029 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2030 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2031 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2032 (fp = IoOFP(io)))
2033 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2034 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2035 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2036 (fp = IoOFP(io)))
2037 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2038 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2039 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
2040 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2041 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2042 if (in) {
2043 if (out)
2044 sv_setpvn(sv, ":utf8\0:utf8", 11);
2045 else
2046 sv_setpvn(sv, ":utf8\0", 6);
2047 }
2048 else if (out)
2049 sv_setpvn(sv, "\0:utf8", 6);
2050 SvSETMAGIC(sv);
2051 }
b310b053
JH
2052 }
2053 }
2054
4ffa73a3
JH
2055 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2056 if (strEQ(s, "unsafe"))
2057 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2058 else if (strEQ(s, "safe"))
2059 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2060 else
2061 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2062 }
2063
6224f72b
GS
2064 init_lexer();
2065
2066 /* now parse the script */
2067
93189314 2068 SETERRNO(0,SS_NORMAL);
3280af22 2069 PL_error_count = 0;
bf4acbe4
GS
2070#ifdef MACOS_TRADITIONAL
2071 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2072 if (PL_minus_c)
2073 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2074 else {
2075 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2076 MacPerl_MPWFileName(PL_origfilename));
2077 }
2078 }
2079#else
3280af22
NIS
2080 if (yyparse() || PL_error_count) {
2081 if (PL_minus_c)
cea2e8a9 2082 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2083 else {
cea2e8a9 2084 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2085 PL_origfilename);
6224f72b
GS
2086 }
2087 }
bf4acbe4 2088#endif
57843af0 2089 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2090 PL_curstash = PL_defstash;
2091 PL_preprocess = FALSE;
2092 if (PL_e_script) {
2093 SvREFCNT_dec(PL_e_script);
2094 PL_e_script = Nullsv;
6224f72b
GS
2095 }
2096
3280af22 2097 if (PL_do_undump)
6224f72b
GS
2098 my_unexec();
2099
57843af0
GS
2100 if (isWARN_ONCE) {
2101 SAVECOPFILE(PL_curcop);
2102 SAVECOPLINE(PL_curcop);
3280af22 2103 gv_check(PL_defstash);
57843af0 2104 }
6224f72b
GS
2105
2106 LEAVE;
2107 FREETMPS;
2108
2109#ifdef MYMALLOC
2110 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2111 dump_mstats("after compilation:");
2112#endif
2113
2114 ENTER;
3280af22 2115 PL_restartop = 0;
312caa8e 2116 return NULL;
6224f72b
GS
2117}
2118
954c1994
GS
2119/*
2120=for apidoc perl_run
2121
2122Tells a Perl interpreter to run. See L<perlembed>.
2123
2124=cut
2125*/
2126
6224f72b 2127int
0cb96387 2128perl_run(pTHXx)
6224f72b 2129{
6224f72b 2130 I32 oldscope;
14dd3ad8 2131 int ret = 0;
db36c5a1 2132 dJMPENV;
6224f72b 2133
9d4ba2ae
AL
2134 PERL_UNUSED_ARG(my_perl);
2135
3280af22 2136 oldscope = PL_scopestack_ix;
96e176bf
CL
2137#ifdef VMS
2138 VMSISH_HUSHED = 0;
2139#endif
6224f72b 2140
14dd3ad8 2141 JMPENV_PUSH(ret);
6224f72b
GS
2142 switch (ret) {
2143 case 1:
2144 cxstack_ix = -1; /* start context stack again */
312caa8e 2145 goto redo_body;
14dd3ad8 2146 case 0: /* normal completion */
14dd3ad8
GS
2147 redo_body:
2148 run_body(oldscope);
14dd3ad8
GS
2149 /* FALL THROUGH */
2150 case 2: /* my_exit() */
3280af22 2151 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2152 LEAVE;
2153 FREETMPS;
3280af22 2154 PL_curstash = PL_defstash;
3a1ee7e8 2155 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2156 PL_endav && !PL_minus_c)
2157 call_list(oldscope, PL_endav);
6224f72b
GS
2158#ifdef MYMALLOC
2159 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2160 dump_mstats("after execution: ");
2161#endif
14dd3ad8
GS
2162 ret = STATUS_NATIVE_EXPORT;
2163 break;
6224f72b 2164 case 3:
312caa8e
CS
2165 if (PL_restartop) {
2166 POPSTACK_TO(PL_mainstack);
2167 goto redo_body;
6224f72b 2168 }
bf49b057 2169 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2170 FREETMPS;
14dd3ad8
GS
2171 ret = 1;
2172 break;
6224f72b
GS
2173 }
2174
14dd3ad8
GS
2175 JMPENV_POP;
2176 return ret;
312caa8e
CS
2177}
2178
14dd3ad8 2179
dd374669 2180STATIC void
14dd3ad8
GS
2181S_run_body(pTHX_ I32 oldscope)
2182{
6224f72b 2183 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2184 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2185
3280af22 2186 if (!PL_restartop) {
6224f72b 2187 DEBUG_x(dump_all());
ecae49c0
NC
2188 if (!DEBUG_q_TEST)
2189 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
2190 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2191 PTR2UV(thr)));
6224f72b 2192
3280af22 2193 if (PL_minus_c) {
bf4acbe4 2194#ifdef MACOS_TRADITIONAL
e69a2255
JH
2195 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2196 (gMacPerl_ErrorFormat ? "# " : ""),
2197 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2198#else
bf49b057 2199 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2200#endif
6224f72b
GS
2201 my_exit(0);
2202 }
3280af22 2203 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2204 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2205 if (PL_initav)
2206 call_list(oldscope, PL_initav);
6224f72b
GS
2207 }
2208
2209 /* do it */
2210
3280af22 2211 if (PL_restartop) {
533c011a 2212 PL_op = PL_restartop;
3280af22 2213 PL_restartop = 0;
cea2e8a9 2214 CALLRUNOPS(aTHX);
6224f72b 2215 }
3280af22
NIS
2216 else if (PL_main_start) {
2217 CvDEPTH(PL_main_cv) = 1;
533c011a 2218 PL_op = PL_main_start;
cea2e8a9 2219 CALLRUNOPS(aTHX);
6224f72b 2220 }
f6b3007c
JH
2221 my_exit(0);
2222 /* NOTREACHED */
6224f72b
GS
2223}
2224
954c1994 2225/*
ccfc67b7
JH
2226=head1 SV Manipulation Functions
2227
954c1994
GS
2228=for apidoc p||get_sv
2229
2230Returns the SV of the specified Perl scalar. If C<create> is set and the
2231Perl variable does not exist then it will be created. If C<create> is not
2232set and the variable does not exist then NULL is returned.
2233
2234=cut
2235*/
2236
6224f72b 2237SV*
864dbfa3 2238Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2239{
2240 GV *gv;
4d1ff10f 2241#ifdef USE_5005THREADS
6224f72b
GS
2242 if (name[1] == '\0' && !isALPHA(name[0])) {
2243 PADOFFSET tmp = find_threadsv(name);
411caa50 2244 if (tmp != NOT_IN_PAD)
6224f72b 2245 return THREADSV(tmp);
6224f72b 2246 }
4d1ff10f 2247#endif /* USE_5005THREADS */
6224f72b
GS
2248 gv = gv_fetchpv(name, create, SVt_PV);
2249 if (gv)
2250 return GvSV(gv);
2251 return Nullsv;
2252}
2253
954c1994 2254/*
ccfc67b7
JH
2255=head1 Array Manipulation Functions
2256
954c1994
GS
2257=for apidoc p||get_av
2258
2259Returns the AV of the specified Perl array. If C<create> is set and the
2260Perl variable does not exist then it will be created. If C<create> is not
2261set and the variable does not exist then NULL is returned.
2262
2263=cut
2264*/
2265
6224f72b 2266AV*
864dbfa3 2267Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
2268{
2269 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
2270 if (create)
2271 return GvAVn(gv);
2272 if (gv)
2273 return GvAV(gv);
2274 return Nullav;
2275}
2276
954c1994 2277/*
ccfc67b7
JH
2278=head1 Hash Manipulation Functions
2279
954c1994
GS
2280=for apidoc p||get_hv
2281
2282Returns the HV of the specified Perl hash. If C<create> is set and the
2283Perl variable does not exist then it will be created. If C<create> is not
2284set and the variable does not exist then NULL is returned.
2285
2286=cut
2287*/
2288
6224f72b 2289HV*
864dbfa3 2290Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2291{
a0d0e21e
LW
2292 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
2293 if (create)
2294 return GvHVn(gv);
2295 if (gv)
2296 return GvHV(gv);
2297 return Nullhv;
2298}
2299
954c1994 2300/*
ccfc67b7
JH
2301=head1 CV Manipulation Functions
2302
954c1994
GS
2303=for apidoc p||get_cv
2304
2305Returns the CV of the specified Perl subroutine. If C<create> is set and
2306the Perl subroutine does not exist then it will be declared (which has the
2307same effect as saying C<sub name;>). If C<create> is not set and the
2308subroutine does not exist then NULL is returned.
2309
2310=cut
2311*/
2312
a0d0e21e 2313CV*
864dbfa3 2314Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
2315{
2316 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2317 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2318 /* XXX this is probably not what they think they're getting.
2319 * It has the same effect as "sub name;", i.e. just a forward
2320 * declaration! */
8ebc5c01 2321 if (create && !GvCVu(gv))
774d564b 2322 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2323 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 2324 Nullop,
a0d0e21e
LW
2325 Nullop);
2326 if (gv)
8ebc5c01 2327 return GvCVu(gv);
a0d0e21e
LW
2328 return Nullcv;
2329}
2330
79072805
LW
2331/* Be sure to refetch the stack pointer after calling these routines. */
2332
954c1994 2333/*
ccfc67b7
JH
2334
2335=head1 Callback Functions
2336
954c1994
GS
2337=for apidoc p||call_argv
2338
2339Performs a callback to the specified Perl sub. See L<perlcall>.
2340
2341=cut
2342*/
2343
a0d0e21e 2344I32
8f42b153 2345Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2346
8ac85365
NIS
2347 /* See G_* flags in cop.h */
2348 /* null terminated arg list */
8990e307 2349{
a0d0e21e 2350 dSP;
8990e307 2351
924508f0 2352 PUSHMARK(SP);
a0d0e21e 2353 if (argv) {
8990e307 2354 while (*argv) {
a0d0e21e 2355 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2356 argv++;
2357 }
a0d0e21e 2358 PUTBACK;
8990e307 2359 }
864dbfa3 2360 return call_pv(sub_name, flags);
8990e307
LW
2361}
2362
954c1994
GS
2363/*
2364=for apidoc p||call_pv
2365
2366Performs a callback to the specified Perl sub. See L<perlcall>.
2367
2368=cut
2369*/
2370
a0d0e21e 2371I32
864dbfa3 2372Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2373 /* name of the subroutine */
2374 /* See G_* flags in cop.h */
a0d0e21e 2375{
864dbfa3 2376 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2377}
2378
954c1994
GS
2379/*
2380=for apidoc p||call_method
2381
2382Performs a callback to the specified Perl method. The blessed object must
2383be on the stack. See L<perlcall>.
2384
2385=cut
2386*/
2387
a0d0e21e 2388I32
864dbfa3 2389Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2390 /* name of the subroutine */
2391 /* See G_* flags in cop.h */
a0d0e21e 2392{
968b3946 2393 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2394}
2395
2396/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2397/*
2398=for apidoc p||call_sv
2399
2400Performs a callback to the Perl sub whose name is in the SV. See
2401L<perlcall>.
2402
2403=cut
2404*/
2405
a0d0e21e 2406I32
864dbfa3 2407Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2408 /* See G_* flags in cop.h */
a0d0e21e 2409{
27da23d5 2410 dVAR; dSP;
a0d0e21e 2411 LOGOP myop; /* fake syntax tree node */
968b3946 2412 UNOP method_op;
aa689395 2413 I32 oldmark;
13689cfe 2414 volatile I32 retval = 0;
a0d0e21e 2415 I32 oldscope;
54310121 2416 bool oldcatch = CATCH_GET;
6224f72b 2417 int ret;
533c011a 2418 OP* oldop = PL_op;
db36c5a1 2419 dJMPENV;
1e422769 2420
a0d0e21e
LW
2421 if (flags & G_DISCARD) {
2422 ENTER;
2423 SAVETMPS;
2424 }
2425
aa689395 2426 Zero(&myop, 1, LOGOP);
54310121 2427 myop.op_next = Nullop;
f51d4af5 2428 if (!(flags & G_NOARGS))
aa689395 2429 myop.op_flags |= OPf_STACKED;
54310121
PP
2430 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2431 (flags & G_ARRAY) ? OPf_WANT_LIST :
2432 OPf_WANT_SCALAR);
462e5cf6 2433 SAVEOP();
533c011a 2434 PL_op = (OP*)&myop;
aa689395 2435
3280af22
NIS
2436 EXTEND(PL_stack_sp, 1);
2437 *++PL_stack_sp = sv;
aa689395 2438 oldmark = TOPMARK;
3280af22 2439 oldscope = PL_scopestack_ix;
a0d0e21e 2440
3280af22 2441 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2442 /* Handle first BEGIN of -d. */
3280af22 2443 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2444 /* Try harder, since this may have been a sighandler, thus
2445 * curstash may be meaningless. */
3280af22 2446 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2447 && !(flags & G_NODEBUG))
533c011a 2448 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2449
968b3946
GS
2450 if (flags & G_METHOD) {
2451 Zero(&method_op, 1, UNOP);
2452 method_op.op_next = PL_op;
2453 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2454 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2455 PL_op = (OP*)&method_op;
968b3946
GS
2456 }
2457
312caa8e 2458 if (!(flags & G_EVAL)) {
0cdb2077 2459 CATCH_SET(TRUE);
14dd3ad8 2460 call_body((OP*)&myop, FALSE);
312caa8e 2461 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2462 CATCH_SET(oldcatch);
312caa8e
CS
2463 }
2464 else {
d78bda3d 2465 myop.op_other = (OP*)&myop;
3280af22 2466 PL_markstack_ptr--;
4633a7c4
LW
2467 /* we're trying to emulate pp_entertry() here */
2468 {
c09156bb 2469 register PERL_CONTEXT *cx;
f54cb97a 2470 const I32 gimme = GIMME_V;
ac27b0f5 2471
4633a7c4
LW
2472 ENTER;
2473 SAVETMPS;
ac27b0f5 2474
1d76a5c3 2475 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2476 PUSHEVAL(cx, 0, 0);
533c011a 2477 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2478
faef0170 2479 PL_in_eval = EVAL_INEVAL;
4633a7c4 2480 if (flags & G_KEEPERR)
faef0170 2481 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2482 else
c69006e4 2483 sv_setpvn(ERRSV,"",0);
4633a7c4 2484 }
3280af22 2485 PL_markstack_ptr++;
a0d0e21e 2486
14dd3ad8 2487 JMPENV_PUSH(ret);
6224f72b
GS
2488 switch (ret) {
2489 case 0:
14dd3ad8
GS
2490 redo_body:
2491 call_body((OP*)&myop, FALSE);
312caa8e
CS
2492 retval = PL_stack_sp - (PL_stack_base + oldmark);
2493 if (!(flags & G_KEEPERR))
c69006e4 2494 sv_setpvn(ERRSV,"",0);
a0d0e21e 2495 break;
6224f72b 2496 case 1:
f86702cc 2497 STATUS_ALL_FAILURE;
a0d0e21e 2498 /* FALL THROUGH */
6224f72b 2499 case 2:
a0d0e21e 2500 /* my_exit() was called */
3280af22 2501 PL_curstash = PL_defstash;
a0d0e21e 2502 FREETMPS;
14dd3ad8 2503 JMPENV_POP;
cc3604b1 2504 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2505 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2506 my_exit_jump();
a0d0e21e 2507 /* NOTREACHED */
6224f72b 2508 case 3:
3280af22 2509 if (PL_restartop) {
533c011a 2510 PL_op = PL_restartop;
3280af22 2511 PL_restartop = 0;
312caa8e 2512 goto redo_body;
a0d0e21e 2513 }
3280af22 2514 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2515 if (flags & G_ARRAY)
2516 retval = 0;
2517 else {
2518 retval = 1;
3280af22 2519 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2520 }
312caa8e 2521 break;
a0d0e21e 2522 }
a0d0e21e 2523
3280af22 2524 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2525 SV **newsp;
2526 PMOP *newpm;
2527 I32 gimme;
c09156bb 2528 register PERL_CONTEXT *cx;
a0a2876f
LW
2529 I32 optype;
2530
2531 POPBLOCK(cx,newpm);
2532 POPEVAL(cx);
3280af22 2533 PL_curpm = newpm;
a0a2876f 2534 LEAVE;
9d4ba2ae
AL
2535 PERL_UNUSED_VAR(newsp);
2536 PERL_UNUSED_VAR(gimme);
2537 PERL_UNUSED_VAR(optype);
a0d0e21e 2538 }
14dd3ad8 2539 JMPENV_POP;
a0d0e21e 2540 }
1e422769 2541
a0d0e21e 2542 if (flags & G_DISCARD) {
3280af22 2543 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2544 retval = 0;
2545 FREETMPS;
2546 LEAVE;
2547 }
533c011a 2548 PL_op = oldop;
a0d0e21e
LW
2549 return retval;
2550}
2551
312caa8e 2552STATIC void
dd374669 2553S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2554{
312caa8e
CS
2555 if (PL_op == myop) {
2556 if (is_eval)
f807eda9 2557 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2558 else
f807eda9 2559 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2560 }
2561 if (PL_op)
cea2e8a9 2562 CALLRUNOPS(aTHX);
312caa8e
CS
2563}
2564
6e72f9df 2565/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2566
954c1994
GS
2567/*
2568=for apidoc p||eval_sv
2569
2570Tells Perl to C<eval> the string in the SV.
2571
2572=cut
2573*/
2574
a0d0e21e 2575I32
864dbfa3 2576Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2577
8ac85365 2578 /* See G_* flags in cop.h */
a0d0e21e 2579{
924508f0 2580 dSP;
a0d0e21e 2581 UNOP myop; /* fake syntax tree node */
8fa7f367 2582 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2583 volatile I32 retval = 0;
6224f72b 2584 int ret;
533c011a 2585 OP* oldop = PL_op;
db36c5a1 2586 dJMPENV;
84902520 2587
4633a7c4
LW
2588 if (flags & G_DISCARD) {
2589 ENTER;
2590 SAVETMPS;
2591 }
2592
462e5cf6 2593 SAVEOP();
533c011a
NIS
2594 PL_op = (OP*)&myop;
2595 Zero(PL_op, 1, UNOP);
3280af22
NIS
2596 EXTEND(PL_stack_sp, 1);
2597 *++PL_stack_sp = sv;
79072805 2598
4633a7c4
LW
2599 if (!(flags & G_NOARGS))
2600 myop.op_flags = OPf_STACKED;
79072805 2601 myop.op_next = Nullop;
6e72f9df 2602 myop.op_type = OP_ENTEREVAL;
54310121
PP
2603 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2604 (flags & G_ARRAY) ? OPf_WANT_LIST :
2605 OPf_WANT_SCALAR);
6e72f9df
PP
2606 if (flags & G_KEEPERR)
2607 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2608
dedbcade
DM
2609 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2610 * before a PUSHEVAL, which corrupts the stack after a croak */
2611 TAINT_PROPER("eval_sv()");
2612
14dd3ad8 2613 JMPENV_PUSH(ret);
6224f72b
GS
2614 switch (ret) {
2615 case 0:
14dd3ad8
GS
2616 redo_body:
2617 call_body((OP*)&myop,TRUE);
312caa8e
CS
2618 retval = PL_stack_sp - (PL_stack_base + oldmark);
2619 if (!(flags & G_KEEPERR))
c69006e4 2620 sv_setpvn(ERRSV,"",0);
4633a7c4 2621 break;
6224f72b 2622 case 1:
f86702cc 2623 STATUS_ALL_FAILURE;
4633a7c4 2624 /* FALL THROUGH */
6224f72b 2625 case 2:
4633a7c4 2626 /* my_exit() was called */
3280af22 2627 PL_curstash = PL_defstash;
4633a7c4 2628 FREETMPS;
14dd3ad8 2629 JMPENV_POP;
cc3604b1 2630 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2631 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2632 my_exit_jump();
4633a7c4 2633 /* NOTREACHED */
6224f72b 2634 case 3:
3280af22 2635 if (PL_restartop) {
533c011a 2636 PL_op = PL_restartop;
3280af22 2637 PL_restartop = 0;
312caa8e 2638 goto redo_body;
4633a7c4 2639 }
3280af22 2640 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2641 if (flags & G_ARRAY)
2642 retval = 0;
2643 else {
2644 retval = 1;
3280af22 2645 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2646 }
312caa8e 2647 break;
4633a7c4
LW
2648 }
2649
14dd3ad8 2650 JMPENV_POP;
4633a7c4 2651 if (flags & G_DISCARD) {
3280af22 2652 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2653 retval = 0;
2654 FREETMPS;
2655 LEAVE;
2656 }
533c011a 2657 PL_op = oldop;
4633a7c4
LW
2658 return retval;
2659}
2660
954c1994
GS
2661/*
2662=for apidoc p||eval_pv
2663
2664Tells Perl to C<eval> the given string and return an SV* result.
2665
2666=cut
2667*/
2668
137443ea 2669SV*
864dbfa3 2670Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2671{
2672 dSP;
2673 SV* sv = newSVpv(p, 0);
2674
864dbfa3 2675 eval_sv(sv, G_SCALAR);
137443ea
PP
2676 SvREFCNT_dec(sv);
2677
2678 SPAGAIN;
2679 sv = POPs;
2680 PUTBACK;
2681
2d8e6c8d 2682 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2683 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2684 }
137443ea
PP
2685
2686 return sv;
2687}
2688
4633a7c4
LW
2689/* Require a module. */
2690
954c1994 2691/*
ccfc67b7
JH
2692=head1 Embedding Functions
2693
954c1994
GS
2694=for apidoc p||require_pv
2695
7d3fb230
BS
2696Tells Perl to C<require> the file named by the string argument. It is
2697analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2698implemented that way; consider using load_module instead.
954c1994 2699
7d3fb230 2700=cut */
954c1994 2701
4633a7c4 2702void
864dbfa3 2703Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2704{
d3acc0f7
JP
2705 SV* sv;
2706 dSP;
e788e7d3 2707 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2708 PUTBACK;
2709 sv = sv_newmortal();
4633a7c4
LW
2710 sv_setpv(sv, "require '");
2711 sv_catpv(sv, pv);
2712 sv_catpv(sv, "'");
864dbfa3 2713 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2714 SPAGAIN;
2715 POPSTACK;
79072805
LW
2716}
2717
79072805 2718void
e1ec3a88 2719Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805
LW
2720{
2721 register GV *gv;
2722
155aba94 2723 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2724 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2725}
2726
76e3520e 2727STATIC void
e1ec3a88 2728S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2729{
ab821d7f 2730 /* This message really ought to be max 23 lines.
75c72d73 2731 * Removed -h because the user already knows that option. Others? */
fb73857a 2732
27da23d5 2733 static const char * const usage_msg[] = {
aefc56c5
SF
2734"-0[octal] specify record separator (\\0, if no argument)",
2735"-A[mod][=pattern] activate all/given assertions",
2736"-a autosplit mode with -n or -p (splits $_ into @F)",
2737"-C[number/list] enables the listed Unicode features",
2738"-c check syntax only (runs BEGIN and CHECK blocks)",
2739"-d[:debugger] run program under debugger",
2740"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2741"-e program one line of program (several -e's allowed, omit programfile)",
aefc56c5 2742"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2743"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2744"-i[extension] edit <> files in place (makes backup if extension supplied)",
2745"-Idirectory specify @INC/#include directory (several -I's allowed)",
2746"-l[octal] enable line ending processing, specifies line terminator",
2747"-[mM][-]module execute \"use/no module...\" before executing program",
2748"-n assume \"while (<>) { ... }\" loop around program",
2749"-p assume loop like -n but print line also, like sed",
2750"-P run program through C preprocessor before compilation",
2751"-s enable rudimentary parsing for switches after programfile",
2752"-S look for programfile using PATH environment variable",
2753"-t enable tainting warnings",
2754"-T enable tainting checks",
2755"-u dump core after parsing program",
2756"-U allow unsafe operations",
2757"-v print version, subversion (includes VERY IMPORTANT perl info)",
2758"-V[:variable] print configuration summary (or a single Config.pm variable)",
2759"-w enable many useful warnings (RECOMMENDED)",
2760"-W enable all warnings",
2761"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2762"-X disable all warnings",
fb73857a
PP
2763"\n",
2764NULL
2765};
27da23d5 2766 const char * const *p = usage_msg;
fb73857a 2767
b0e47665
GS
2768 PerlIO_printf(PerlIO_stdout(),
2769 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2770 name);
fb73857a 2771 while (*p)
b0e47665 2772 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2773}
2774
b4ab917c
DM
2775/* convert a string of -D options (or digits) into an int.
2776 * sets *s to point to the char after the options */
2777
2778#ifdef DEBUGGING
2779int
e1ec3a88 2780Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2781{
27da23d5 2782 static const char * const usage_msgd[] = {
e6e64d9b
JC
2783 " Debugging flag values: (see also -d)",
2784 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2785 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2786 " l Context (loop) stack processing",
2787 " t Trace execution",
2788 " o Method and overloading resolution",
2789 " c String/numeric conversions",
2790 " P Print profiling info, preprocessor command for -P, source file input state",
2791 " m Memory allocation",
2792 " f Format processing",
2793 " r Regular expression parsing and execution",
2794 " x Syntax tree dump",
3679267a 2795 " u Tainting checks",
e6e64d9b
JC
2796 " H Hash dump -- usurps values()",
2797 " X Scratchpad allocation",
2798 " D Cleaning up",
2799 " S Thread synchronization",
2800 " T Tokenising",
2801 " R Include reference counts of dumped variables (eg when using -Ds)",
2802 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2803 " v Verbose: use in conjunction with other flags",
2804 " C Copy On Write",
2805 " A Consistency checks on internal structures",
3679267a 2806 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2807 NULL
2808 };
b4ab917c
DM
2809 int i = 0;
2810 if (isALPHA(**s)) {
2811 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2812 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2813
2814 for (; isALNUM(**s); (*s)++) {
e1ec3a88 2815 const char *d = strchr(debopts,**s);
b4ab917c
DM
2816 if (d)
2817 i |= 1 << (d - debopts);
2818 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2819 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2820 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2821 }
2822 }
e6e64d9b 2823 else if (isDIGIT(**s)) {
b4ab917c
DM
2824 i = atoi(*s);
2825 for (; isALNUM(**s); (*s)++) ;
2826 }
ddcf8bc1 2827 else if (givehelp) {
aadb217d 2828 char **p = (char **)usage_msgd;
e6e64d9b
JC
2829 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2830 }
b4ab917c
DM
2831# ifdef EBCDIC
2832 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2833 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2834 "-Dp not implemented on this platform\n");
2835# endif
2836 return i;
2837}
2838#endif
2839
79072805
LW
2840/* This routine handles any switches that can be given during run */
2841
2842char *
864dbfa3 2843Perl_moreswitches(pTHX_ char *s)
79072805 2844{
27da23d5 2845 dVAR;
84c133a0 2846 UV rschar;
79072805
LW
2847
2848 switch (*s) {
2849 case '0':
a863c7d1 2850 {
f2095865 2851 I32 flags = 0;
a3b680e6 2852 STRLEN numlen;
f2095865
JH
2853
2854 SvREFCNT_dec(PL_rs);
2855 if (s[1] == 'x' && s[2]) {
a3b680e6 2856 const char *e = s+=2;
f2095865
JH
2857 U8 *tmps;
2858
a3b680e6
AL
2859 while (*e)
2860 e++;
f2095865
JH
2861 numlen = e - s;
2862 flags = PERL_SCAN_SILENT_ILLDIGIT;
2863 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2864 if (s + numlen < e) {
2865 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2866 numlen = 0;
2867 s--;
2868 }
2869 PL_rs = newSVpvn("", 0);
c5661c80 2870 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2871 tmps = (U8*)SvPVX(PL_rs);
2872 uvchr_to_utf8(tmps, rschar);
2873 SvCUR_set(PL_rs, UNISKIP(rschar));
2874 SvUTF8_on(PL_rs);
2875 }
2876 else {
2877 numlen = 4;
2878 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2879 if (rschar & ~((U8)~0))
2880 PL_rs = &PL_sv_undef;
2881 else if (!rschar && numlen >= 2)
2882 PL_rs = newSVpvn("", 0);
2883 else {
2884 char ch = (char)rschar;
2885 PL_rs = newSVpvn(&ch, 1);
2886 }
2887 }
800633c3 2888 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 2889 return s + numlen;
a863c7d1 2890 }
46487f74 2891 case 'C':
a05d7ebb 2892 s++;
dd374669 2893 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 2894 return s;
2304df62 2895 case 'F':
3280af22 2896 PL_minus_F = TRUE;
ebce5377
RGS
2897 PL_splitstr = ++s;
2898 while (*s && !isSPACE(*s)) ++s;
2899 *s = '\0';
2900 PL_splitstr = savepv(PL_splitstr);
2304df62 2901 return s;
79072805 2902 case 'a':
3280af22 2903 PL_minus_a = TRUE;
79072805
LW
2904 s++;
2905 return s;
2906 case 'c':
3280af22 2907 PL_minus_c = TRUE;
79072805
LW
2908 s++;
2909 return s;
2910 case 'd':
bbce6d69 2911 forbid_setid("-d");
4633a7c4 2912 s++;
2cbb2ee1
RGS
2913
2914 /* -dt indicates to the debugger that threads will be used */
2915 if (*s == 't' && !isALNUM(s[1])) {
2916 ++s;
2917 my_setenv("PERL5DB_THREADED", "1");
2918 }
2919
70c94a19
RR
2920 /* The following permits -d:Mod to accepts arguments following an =
2921 in the fashion that -MSome::Mod does. */
2922 if (*s == ':' || *s == '=') {
06b5626a 2923 const char *start;
70c94a19
RR
2924 SV *sv;
2925 sv = newSVpv("use Devel::", 0);
2926 start = ++s;
2927 /* We now allow -d:Module=Foo,Bar */
2928 while(isALNUM(*s) || *s==':') ++s;
2929 if (*s != '=')
2930 sv_catpv(sv, start);
2931 else {
2932 sv_catpvn(sv, start, s-start);
2933 sv_catpv(sv, " split(/,/,q{");
2934 sv_catpv(sv, ++s);
3d27e215 2935 sv_catpv(sv, "})");
70c94a19 2936 }
4633a7c4 2937 s += strlen(s);
70c94a19 2938 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2939 }
ed094faf 2940 if (!PL_perldb) {
3280af22 2941 PL_perldb = PERLDB_ALL;
a0d0e21e 2942 init_debugger();
ed094faf 2943 }
79072805
LW
2944 return s;
2945 case 'D':
0453d815 2946 {
79072805 2947#ifdef DEBUGGING
bbce6d69 2948 forbid_setid("-D");
b4ab917c 2949 s++;
dd374669 2950 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 2951#else /* !DEBUGGING */
0453d815 2952 if (ckWARN_d(WARN_DEBUGGING))
9014280d 2953 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 2954 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 2955 for (s++; isALNUM(*s); s++) ;
79072805 2956#endif
79072805 2957 return s;
0453d815 2958 }
4633a7c4 2959 case 'h':
ac27b0f5 2960 usage(PL_origargv[0]);
7ca617d0 2961 my_exit(0);
79072805 2962 case 'i':
3280af22
NIS
2963 if (PL_inplace)
2964 Safefree(PL_inplace);
c030f24b
GH
2965#if defined(__CYGWIN__) /* do backup extension automagically */
2966 if (*(s+1) == '\0') {
2967 PL_inplace = savepv(".bak");
2968 return s+1;
2969 }
2970#endif /* __CYGWIN__ */
3280af22 2971 PL_inplace = savepv(s+1);
a6e20a40
AL
2972 for (s = PL_inplace; *s && !isSPACE(*s); s++)
2973 ;
7b8d334a 2974 if (*s) {
fb73857a 2975 *s++ = '\0';
7b8d334a
GS
2976 if (*s == '-') /* Additional switches on #! line. */
2977 s++;
2978 }
fb73857a 2979 return s;
4e49a025 2980 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2981 forbid_setid("-I");
fb73857a
PP
2982 ++s;
2983 while (*s && isSPACE(*s))
2984 ++s;
2985 if (*s) {
774d564b 2986 char *e, *p;
0df16ed7
GS
2987 p = s;
2988 /* ignore trailing spaces (possibly followed by other switches) */
2989 do {
2990 for (e = p; *e && !isSPACE(*e); e++) ;
2991 p = e;
2992 while (isSPACE(*p))
2993 p++;
2994 } while (*p && *p != '-');
2995 e = savepvn(s, e-s);
88fe16b2 2996 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
2997 Safefree(e);
2998 s = p;
2999 if (*s == '-')
3000 s++;
79072805
LW
3001 }
3002 else
a67e862a 3003 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3004 return s;
79072805 3005 case 'l':
3280af22 3006 PL_minus_l = TRUE;
79072805 3007 s++;
7889fe52
NIS
3008 if (PL_ors_sv) {
3009 SvREFCNT_dec(PL_ors_sv);
3010 PL_ors_sv = Nullsv;
3011 }
79072805 3012 if (isDIGIT(*s)) {
53305cf1 3013 I32 flags = 0;
a3b680e6 3014 STRLEN numlen;
7889fe52 3015 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
3016 numlen = 3 + (*s == '0');
3017 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3018 s += numlen;
3019 }
3020 else {
8bfdd7d9 3021 if (RsPARA(PL_rs)) {
7889fe52
NIS
3022 PL_ors_sv = newSVpvn("\n\n",2);
3023 }
3024 else {
8bfdd7d9 3025 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3026 }
79072805
LW
3027 }
3028 return s;
06492da6
SF
3029 case 'A':
3030 forbid_setid("-A");
930366bd
RGS
3031 if (!PL_preambleav)
3032 PL_preambleav = newAV();
aefc56c5
SF
3033 s++;
3034 {
3035 char *start = s;
3036 SV *sv = newSVpv("use assertions::activate", 24);
3037 while(isALNUM(*s) || *s == ':') ++s;
3038 if (s != start) {
3039 sv_catpvn(sv, "::", 2);
3040 sv_catpvn(sv, start, s-start);
3041 }
3042 if (*s == '=') {
3043 sv_catpvn(sv, " split(/,/,q\0", 13);
3044 sv_catpv(sv, s+1);
3045 sv_catpvn(sv, "\0)", 2);
3046 s+=strlen(s);
3047 }
3048 else if (*s != '\0') {
3049 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, s-start, start);
3050 }
06492da6 3051 av_push(PL_preambleav, sv);
aefc56c5 3052 return s;
06492da6 3053 }
1a30305b 3054 case 'M':
bbce6d69 3055 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
3056 /* FALL THROUGH */
3057 case 'm':
bbce6d69 3058 forbid_setid("-m"); /* XXX ? */
1a30305b 3059 if (*++s) {
a5f75d66 3060 char *start;
11343788 3061 SV *sv;
e1ec3a88 3062 const char *use = "use ";
a5f75d66
AD
3063 /* -M-foo == 'no foo' */
3064 if (*s == '-') { use = "no "; ++s; }
11343788 3065 sv = newSVpv(use,0);
a5f75d66 3066 start = s;
1a30305b 3067 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3068 while(isALNUM(*s) || *s==':') ++s;
3069 if (*s != '=') {
11343788 3070 sv_catpv(sv, start);
c07a80fd
PP
3071 if (*(start-1) == 'm') {
3072 if (*s != '\0')
cea2e8a9 3073 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 3074 sv_catpv( sv, " ()");
c07a80fd
PP
3075 }
3076 } else {
6df41af2 3077 if (s == start)
be98fb35
GS
3078 Perl_croak(aTHX_ "Module name required with -%c option",
3079 s[-1]);
11343788 3080 sv_catpvn(sv, start, s-start);
3d27e215
LM
3081 sv_catpv(sv, " split(/,/,q");
3082 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
11343788 3083 sv_catpv(sv, ++s);
3d27e215 3084 sv_catpvn(sv, "\0)", 2);
c07a80fd 3085 }
1a30305b 3086 s += strlen(s);
5c831c24 3087 if (!PL_preambleav)
3280af22
NIS
3088 PL_preambleav = newAV();
3089 av_push(PL_preambleav, sv);
1a30305b
PP
3090 }
3091 else
9e81e6a1 3092 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3093 return s;
79072805 3094 case 'n':
3280af22 3095 PL_minus_n = TRUE;
79072805
LW
3096 s++;
3097 return s;
3098 case 'p':
3280af22 3099 PL_minus_p = TRUE;
79072805
LW
3100 s++;
3101 return s;
3102 case 's':
bbce6d69 3103 forbid_setid("-s");
3280af22 3104 PL_doswitches = TRUE;
79072805
LW
3105 s++;
3106 return s;
6537fe72
MS
3107 case 't':
3108 if (!PL_tainting)
22f7c9c9 3109 TOO_LATE_FOR('t');
6537fe72
MS
3110 s++;
3111 return s;
463ee0b2 3112 case 'T':
3280af22 3113 if (!PL_tainting)
22f7c9c9 3114 TOO_LATE_FOR('T');
463ee0b2
LW
3115 s++;
3116 return s;
79072805 3117 case 'u':
bf4acbe4
GS
3118#ifdef MACOS_TRADITIONAL
3119 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3120#endif
3280af22 3121 PL_do_undump = TRUE;
79072805
LW
3122 s++;
3123 return s;
3124 case 'U':
3280af22 3125 PL_unsafe = TRUE;
79072805
LW
3126 s++;
3127 return s;
3128 case 'v':
d7aa5382
JP
3129 if (!sv_derived_from(PL_patchlevel, "version"))
3130 (void *)upg_version(PL_patchlevel);
8e9464f1 3131#if !defined(DGUX)
b0e47665 3132 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3133 Perl_form(aTHX_ "\nThis is perl, %"SVf" built for %s",
d7aa5382
JP
3134 vstringify(PL_patchlevel),
3135 ARCHNAME));
8e9464f1
JH
3136#else /* DGUX */
3137/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3138 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3139 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3140 vstringify(PL_patchlevel)));
8e9464f1
JH
3141 PerlIO_printf(PerlIO_stdout(),
3142 Perl_form(aTHX_ " built under %s at %s %s\n",
3143 OSNAME, __DATE__, __TIME__));
3144 PerlIO_printf(PerlIO_stdout(),
3145 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3146 OSVERS));
8e9464f1
JH
3147#endif /* !DGUX */
3148
fb73857a
PP
3149#if defined(LOCAL_PATCH_COUNT)
3150 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3151 PerlIO_printf(PerlIO_stdout(),
3152 "\n(with %d registered patch%s, "
3153 "see perl -V for more detail)",
3154 (int)LOCAL_PATCH_COUNT,
3155 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3156#endif
1a30305b 3157
b0e47665 3158 PerlIO_printf(PerlIO_stdout(),
359b00fe 3159 "\n\nCopyright 1987-2005, Larry Wall\n");
eae9c151
JH
3160#ifdef MACOS_TRADITIONAL
3161 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3162 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3163 "maintained by Chris Nandor\n");
eae9c151 3164#endif
79072805 3165#ifdef MSDOS
b0e47665
GS
3166 PerlIO_printf(PerlIO_stdout(),
3167 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3168#endif
3169#ifdef DJGPP
b0e47665
GS
3170 PerlIO_printf(PerlIO_stdout(),
3171 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3172 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3173#endif
79072805 3174#ifdef OS2
b0e47665
GS
3175 PerlIO_printf(PerlIO_stdout(),
3176 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3177 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3178#endif
79072805 3179#ifdef atarist
b0e47665
GS
3180 PerlIO_printf(PerlIO_stdout(),
3181 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3182#endif
a3f9223b 3183#ifdef __BEOS__
b0e47665
GS
3184 PerlIO_printf(PerlIO_stdout(),
3185 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3186#endif
1d84e8df 3187#ifdef MPE
b0e47665 3188 PerlIO_printf(PerlIO_stdout(),
e583a879 3189 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3190#endif
9d116dd7 3191#ifdef OEMVS
b0e47665
GS
3192 PerlIO_printf(PerlIO_stdout(),
3193 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3194#endif
495c5fdc 3195#ifdef __VOS__
b0e47665 3196 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3197 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3198#endif
092bebab 3199#ifdef __OPEN_VM
b0e47665
GS
3200 PerlIO_printf(PerlIO_stdout(),
3201 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3202#endif
a1a0e61e 3203#ifdef POSIX_BC
b0e47665
GS
3204 PerlIO_printf(PerlIO_stdout(),
3205 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3206#endif
61ae2fbf 3207#ifdef __MINT__
b0e47665
GS
3208 PerlIO_printf(PerlIO_stdout(),
3209 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3210#endif
f83d2536 3211#ifdef EPOC
b0e47665 3212 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3213 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3214#endif
e1caacb4 3215#ifdef UNDER_CE
b475b3e6
JH
3216 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3217 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3218 wce_hitreturn();
3219#endif
27da23d5
JH
3220#ifdef SYMBIAN
3221 PerlIO_printf(PerlIO_stdout(),
3222 "Symbian port by Nokia, 2004-2005\n");
3223#endif
baed7233
DL
3224#ifdef BINARY_BUILD_NOTICE
3225 BINARY_BUILD_NOTICE;
3226#endif
b0e47665
GS
3227 PerlIO_printf(PerlIO_stdout(),
3228 "\n\
79072805 3229Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3230GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3231Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3232this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3233Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3234 my_exit(0);
79072805 3235 case 'w':
599cee73 3236 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3237 PL_dowarn |= G_WARN_ON;
599cee73
PM
3238 s++;
3239 return s;
3240 case 'W':
ac27b0f5 3241 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3242 if (!specialWARN(PL_compiling.cop_warnings))
3243 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3244 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3245 s++;
3246 return s;
3247 case 'X':
ac27b0f5 3248 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3249 if (!specialWARN(PL_compiling.cop_warnings))
3250 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3251 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3252 s++;
3253 return s;
a0d0e21e 3254 case '*':
79072805
LW
3255 case ' ':
3256 if (s[1] == '-') /* Additional switches on #! line. */
3257 return s+2;
3258 break;
a0d0e21e 3259 case '-':
79072805 3260 case 0:
51882d45 3261#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3262 case '\r':
3263#endif
79072805
LW
3264 case '\n':
3265 case '\t':
3266 break;
aa689395
PP
3267#ifdef ALTERNATE_SHEBANG
3268 case 'S': /* OS/2 needs -S on "extproc" line. */
3269 break;
3270#endif
a0d0e21e 3271 case 'P':
3280af22 3272 if (PL_preprocess)
a0d0e21e
LW
3273 return s+1;
3274 /* FALL THROUGH */
79072805 3275 default:
cea2e8a9 3276 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
3277 }
3278 return Nullch;
3279}
3280
3281/* compliments of Tom Christiansen */
3282
3283/* unexec() can be found in the Gnu emacs distribution */
ee580363 3284/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3285
3286void
864dbfa3 3287Perl_my_unexec(pTHX)
79072805
LW
3288{
3289#ifdef UNEXEC
46fc3d4c
PP
3290 SV* prog;
3291 SV* file;
ee580363 3292 int status = 1;
79072805
LW
3293 extern int etext;
3294
ee580363 3295 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 3296 sv_catpv(prog, "/perl");
6b88bc9c 3297 file = newSVpv(PL_origfilename, 0);
46fc3d4c 3298 sv_catpv(file, ".perldump");
79072805 3299
ee580363
GS
3300 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3301 /* unexec prints msg to stderr in case of failure */
6ad3d225 3302 PerlProc_exit(status);
79072805 3303#else
a5f75d66
AD
3304# ifdef VMS
3305# include <lib$routines.h>
3306 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 3307# else
79072805 3308 ABORT(); /* for use with undump */
aa689395 3309# endif
a5f75d66 3310#endif
79072805
LW
3311}
3312
cb68f92d
GS
3313/* initialize curinterp */
3314STATIC void
cea2e8a9 3315S_init_interp(pTHX)
cb68f92d
GS
3316{
3317
acfe0abc
GS
3318#ifdef MULTIPLICITY
3319# define PERLVAR(var,type)
3320# define PERLVARA(var,n,type)
3321# if defined(PERL_IMPLICIT_CONTEXT)
3322# if defined(USE_5005THREADS)
3323# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
27da23d5 3324# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
3325# else /* !USE_5005THREADS */
3326# define PERLVARI(var,type,init) aTHX->var = init;
3327# define PERLVARIC(var,type,init) aTHX->var = init;
3328# endif /* USE_5005THREADS */
3967c732 3329# else
acfe0abc
GS
3330# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3331# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3332# endif
acfe0abc
GS
3333# include "intrpvar.h"
3334# ifndef USE_5005THREADS
3335# include "thrdvar.h"
3336# endif
3337# undef PERLVAR
3338# undef PERLVARA
3339# undef PERLVARI
3340# undef PERLVARIC
3341#else
3342# define PERLVAR(var,type)
3343# define PERLVARA(var,n,type)
3344# define PERLVARI(var,type,init) PL_##var = init;
3345# define PERLVARIC(var,type,init) PL_##var = init;
3346# include "intrpvar.h"
3347# ifndef USE_5005THREADS
3348# include "thrdvar.h"
3349# endif
3350# undef PERLVAR
3351# undef PERLVARA
3352# undef PERLVARI
3353# undef PERLVARIC
cb68f92d
GS
3354#endif
3355
cb68f92d
GS
3356}
3357
76e3520e 3358STATIC void
cea2e8a9 3359S_init_main_stash(pTHX)
79072805 3360{
463ee0b2 3361 GV *gv;
6e72f9df 3362
3280af22 3363 PL_curstash = PL_defstash = newHV();
79cb57f6 3364 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
3365 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
3366 SvREFCNT_dec(GvHV(gv));
3280af22 3367 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 3368 SvREADONLY_on(gv);
bfcb3514 3369 Perl_hv_name_set(aTHX_ PL_defstash, "main", 4, 0);
3280af22
NIS
3370 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
3371 GvMULTI_on(PL_incgv);
3372 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
3373 GvMULTI_on(PL_hintgv);
3374 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
3375 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
3376 GvMULTI_on(PL_errgv);
3377 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
3378 GvMULTI_on(PL_replgv);
cea2e8a9 3379 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3380#ifdef PERL_DONT_CREATE_GVSV
3381 gv_SVadd(PL_errgv);
3382#endif
38a03e6e
MB
3383 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3384 sv_setpvn(ERRSV, "", 0);
3280af22 3385 PL_curstash = PL_defstash;
11faa288 3386 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 3387 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 3388 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 3389 /* We must init $/ before switches are processed. */
864dbfa3 3390 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
3391}
3392
ae3f3efd 3393/* PSz 18 Nov 03 fdscript now global but do not change prototype */
76e3520e 3394STATIC void
dd374669 3395S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv)
79072805 3396{
ae3f3efd 3397#ifndef IAMSUID
e1ec3a88
AL
3398 const char *quote;
3399 const char *code;
3400 const char *cpp_discard_flag;
3401 const char *perl;
ae3f3efd 3402#endif
27da23d5 3403 dVAR;
1b24ed4b 3404
ae3f3efd
PS
3405 PL_fdscript = -1;
3406 PL_suidscript = -1;
79072805 3407
3280af22 3408 if (PL_e_script) {
ff5bdd37 3409 PL_origfilename = savepvn("-e", 2);
96436eeb 3410 }
6c4ab083
GS
3411 else {
3412 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3413 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
3414
3415 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
e1ec3a88 3416 const char *s = scriptname + 8;
ae3f3efd 3417 PL_fdscript = atoi(s);
6c4ab083
GS
3418 while (isDIGIT(*s))
3419 s++;
3420 if (*s) {
ae3f3efd
PS
3421 /* PSz 18 Feb 04
3422 * Tell apart "normal" usage of fdscript, e.g.
3423 * with bash on FreeBSD:
3424 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3425 * from usage in suidperl.
3426 * Does any "normal" usage leave garbage after the number???
3427 * Is it a mistake to use a similar /dev/fd/ construct for
3428 * suidperl?
3429 */
3430 PL_suidscript = 1;
3431 /* PSz 20 Feb 04
3432 * Be supersafe and do some sanity-checks.
3433 * Still, can we be sure we got the right thing?
3434 */
3435 if (*s != '/') {
3436 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3437 }
3438 if (! *(s+1)) {
3439 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3440 }
6c4ab083 3441 scriptname = savepv(s + 1);
3280af22 3442 Safefree(PL_origfilename);
dd374669 3443 PL_origfilename = (char *)scriptname;
6c4ab083
GS
3444 }
3445 }
3446 }
3447
05ec9bb3 3448 CopFILE_free(PL_curcop);
57843af0 3449 CopFILE_set(PL_curcop, PL_origfilename);
770526c1 3450 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
dd374669 3451 scriptname = (char *)"";
ae3f3efd
PS
3452 if (PL_fdscript >= 0) {
3453 PL_rsfp = PerlIO_fdopen(PL_fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS
3454# if defined(HAS_FCNTL) && defined(F_SETFD)
3455 if (PL_rsfp)
3456 /* ensure close-on-exec */
3457 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3458# endif
96436eeb 3459 }
ae3f3efd
PS
3460#ifdef IAMSUID
3461 else {
86207487
NC
3462 Perl_croak(aTHX_ "sperl needs fd script\n"
3463 "You should not call sperl directly; do you need to "
3464 "change a #! line\nfrom sperl to perl?\n");
3465
ae3f3efd
PS
3466/* PSz 11 Nov 03
3467 * Do not open (or do other fancy stuff) while setuid.
3468 * Perl does the open, and hands script to suidperl on a fd;
3469 * suidperl only does some checks, sets up UIDs and re-execs
3470 * perl with that fd as it has always done.
3471 */
3472 }
3473 if (PL_suidscript != 1) {
3474 Perl_croak(aTHX_ "suidperl needs (suid) fd script\n");
3475 }
3476#else /* IAMSUID */
3280af22 3477 else if (PL_preprocess) {
dd374669 3478 const char *cpp_cfg = CPPSTDIN;
79cb57f6 3479 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
3480 SV *cmd = NEWSV(0,0);
3481
ae58f265
JH
3482 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
3483 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
46fc3d4c 3484 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 3485 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 3486 sv_catpv(cpp, cpp_cfg);
79072805 3487
1b24ed4b
MS
3488# ifndef VMS
3489 sv_catpvn(sv, "-I", 2);
3490 sv_catpv(sv,PRIVLIB_EXP);
3491# endif
46fc3d4c 3492
14953ddc
MB
3493 DEBUG_P(PerlIO_printf(Perl_debug_log,
3494 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
848ef955
NC
3495 scriptname, SvPVX_const (cpp), SvPVX_const (sv),
3496 CPPMINUS));
1b24ed4b
MS
3497
3498# if defined(MSDOS) || defined(WIN32) || defined(VMS)
3499 quote = "\"";
3500# else
3501 quote = "'";
3502# endif
3503
3504# ifdef VMS
3505 cpp_discard_flag = "";
3506# else
3507 cpp_discard_flag = "-C";
3508# endif
3509
3510# ifdef OS2
3511 perl = os2_execname(aTHX);
3512# else
3513 perl = PL_origargv[0];
3514# endif
3515
3516
3517 /* This strips off Perl comments which might interfere with
62375a60
NIS
3518 the C pre-processor, including #!. #line directives are
3519 deliberately stripped to avoid confusion with Perl's version
1b24ed4b
MS
3520 of #line. FWP played some golf with it so it will fit
3521 into VMS's 255 character buffer.
3522 */
3523 if( PL_doextract )
3524 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3525 else
3526 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
3527
3528 Perl_sv_setpvf(aTHX_ cmd, "\
3529%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
62375a60 3530 perl, quote, code, quote, scriptname, cpp,
1b24ed4b
MS
3531 cpp_discard_flag, sv, CPPMINUS);
3532
3280af22 3533 PL_doextract = FALSE;
0a6c758d 3534
62375a60
NIS
3535 DEBUG_P(PerlIO_printf(Perl_debug_log,
3536 "PL_preprocess: cmd=\"%s\"\n",
848ef955 3537 SvPVX_const(cmd)));
0a6c758d 3538
848ef955 3539 PL_rsfp = PerlProc_popen((char *)SvPVX_const(cmd), (char *)"r");
46fc3d4c
PP
3540 SvREFCNT_dec(cmd);
3541 SvREFCNT_dec(cpp);
79072805
LW
3542 }
3543 else if (!*scriptname) {
bbce6d69 3544 forbid_setid("program input from stdin");
3280af22 3545 PL_rsfp = PerlIO_stdin();
79072805 3546 }
96436eeb 3547 else {
3280af22 3548 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS
3549# if defined(HAS_FCNTL) && defined(F_SETFD)
3550 if (PL_rsfp)
3551 /* ensure close-on-exec */
3552 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3553# endif
96436eeb 3554 }
ae3f3efd 3555#endif /* IAMSUID */
3280af22 3556 if (!PL_rsfp) {
447218f8 3557 /* PSz 16 Sep 03 Keep neat error message */
fa3aa65a
JC
3558 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3559 CopFILE(PL_curcop), Strerror(errno));
13281fa4 3560 }
79072805 3561}
8d063cd8 3562
7b89560d
JH
3563/* Mention
3564 * I_SYSSTATVFS HAS_FSTATVFS
3565 * I_SYSMOUNT
c890dc6c 3566 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
3567 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3568 * here so that metaconfig picks them up. */
3569
104d25b7 3570#ifdef IAMSUID
864dbfa3 3571STATIC int
e688b231 3572S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 3573{
ae3f3efd
PS
3574/* PSz 27 Feb 04
3575 * We used to do this as "plain" user (after swapping UIDs with setreuid);
3576 * but is needed also on machines without setreuid.
3577 * Seems safe enough to run as root.
3578 */
0545a864
JH
3579 int check_okay = 0; /* able to do all the required sys/libcalls */
3580 int on_nosuid = 0; /* the fd is on a nosuid fs */
ae3f3efd
PS
3581 /* PSz 12 Nov 03