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a0d0e21e 1/* mg.c
79072805 2 *
1129b882
NC
3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
79072805
LW
5 *
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.
8 *
a0d0e21e
LW
9 */
10
11/*
4ac71550
TC
12 * Sam sat on the ground and put his head in his hands. 'I wish I had never
13 * come here, and I don't want to see no more magic,' he said, and fell silent.
14 *
15 * [p.363 of _The Lord of the Rings_, II/vii: "The Mirror of Galadriel"]
79072805
LW
16 */
17
ccfc67b7
JH
18/*
19=head1 Magical Functions
166f8a29
DM
20
21"Magic" is special data attached to SV structures in order to give them
22"magical" properties. When any Perl code tries to read from, or assign to,
23an SV marked as magical, it calls the 'get' or 'set' function associated
24with that SV's magic. A get is called prior to reading an SV, in order to
ddfa107c 25give it a chance to update its internal value (get on $. writes the line
166f8a29
DM
26number of the last read filehandle into to the SV's IV slot), while
27set is called after an SV has been written to, in order to allow it to make
ddfa107c 28use of its changed value (set on $/ copies the SV's new value to the
166f8a29
DM
29PL_rs global variable).
30
31Magic is implemented as a linked list of MAGIC structures attached to the
32SV. Each MAGIC struct holds the type of the magic, a pointer to an array
33of functions that implement the get(), set(), length() etc functions,
34plus space for some flags and pointers. For example, a tied variable has
35a MAGIC structure that contains a pointer to the object associated with the
36tie.
37
ccfc67b7
JH
38*/
39
79072805 40#include "EXTERN.h"
864dbfa3 41#define PERL_IN_MG_C
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LW
42#include "perl.h"
43
5cd24f17 44#if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
b7953727
JH
45# ifdef I_GRP
46# include <grp.h>
47# endif
188ea221
CS
48#endif
49
757f63d8
SP
50#if defined(HAS_SETGROUPS)
51# ifndef NGROUPS
52# define NGROUPS 32
53# endif
54#endif
55
17aa7f3d
JH
56#ifdef __hpux
57# include <sys/pstat.h>
58#endif
59
8aad04aa 60#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
b6455c53 61Signal_t Perl_csighandler(int sig, siginfo_t *, void *);
8aad04aa 62#else
e69880a5 63Signal_t Perl_csighandler(int sig);
8aad04aa 64#endif
e69880a5 65
9cffb111
OS
66#ifdef __Lynx__
67/* Missing protos on LynxOS */
68void setruid(uid_t id);
69void seteuid(uid_t id);
70void setrgid(uid_t id);
71void setegid(uid_t id);
72#endif
73
c07a80fd
PP
74/*
75 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
76 */
77
78struct magic_state {
79 SV* mgs_sv;
80 U32 mgs_flags;
455ece5e 81 I32 mgs_ss_ix;
c07a80fd 82};
455ece5e 83/* MGS is typedef'ed to struct magic_state in perl.h */
76e3520e
GS
84
85STATIC void
8fb26106 86S_save_magic(pTHX_ I32 mgs_ix, SV *sv)
c07a80fd 87{
97aff369 88 dVAR;
455ece5e 89 MGS* mgs;
7918f24d
NC
90
91 PERL_ARGS_ASSERT_SAVE_MAGIC;
92
c07a80fd 93 assert(SvMAGICAL(sv));
d8b2590f
NC
94 /* Turning READONLY off for a copy-on-write scalar (including shared
95 hash keys) is a bad idea. */
765f542d 96 if (SvIsCOW(sv))
9a265e59 97 sv_force_normal_flags(sv, 0);
c07a80fd 98
8772537c 99 SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix));
455ece5e
AD
100
101 mgs = SSPTR(mgs_ix, MGS*);
c07a80fd
PP
102 mgs->mgs_sv = sv;
103 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
455ece5e 104 mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */
c07a80fd
PP
105
106 SvMAGICAL_off(sv);
107 SvREADONLY_off(sv);
085bde85
NC
108 if (!(SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK))) {
109 /* No public flags are set, so promote any private flags to public. */
110 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
111 }
c07a80fd
PP
112}
113
954c1994
GS
114/*
115=for apidoc mg_magical
116
117Turns on the magical status of an SV. See C<sv_magic>.
118
119=cut
120*/
121
8990e307 122void
864dbfa3 123Perl_mg_magical(pTHX_ SV *sv)
8990e307 124{
e1ec3a88 125 const MAGIC* mg;
7918f24d 126 PERL_ARGS_ASSERT_MG_MAGICAL;
96a5add6 127 PERL_UNUSED_CONTEXT;
218787bd
VP
128 if ((mg = SvMAGIC(sv))) {
129 SvRMAGICAL_off(sv);
130 do {
131 const MGVTBL* const vtbl = mg->mg_virtual;
132 if (vtbl) {
133 if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
134 SvGMAGICAL_on(sv);
135 if (vtbl->svt_set)
136 SvSMAGICAL_on(sv);
137 if (vtbl->svt_clear)
138 SvRMAGICAL_on(sv);
139 }
140 } while ((mg = mg->mg_moremagic));
141 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)))
142 SvRMAGICAL_on(sv);
8990e307
LW
143 }
144}
145
2767dea0
DM
146
147/* is this container magic (%ENV, $1 etc), or value magic (pos, taint etc)? */
148
149STATIC bool
150S_is_container_magic(const MAGIC *mg)
151{
7918f24d 152 assert(mg);
2767dea0
DM
153 switch (mg->mg_type) {
154 case PERL_MAGIC_bm:
155 case PERL_MAGIC_fm:
156 case PERL_MAGIC_regex_global:
157 case PERL_MAGIC_nkeys:
158#ifdef USE_LOCALE_COLLATE
159 case PERL_MAGIC_collxfrm:
160#endif
161 case PERL_MAGIC_qr:
162 case PERL_MAGIC_taint:
163 case PERL_MAGIC_vec:
164 case PERL_MAGIC_vstring:
165 case PERL_MAGIC_utf8:
166 case PERL_MAGIC_substr:
167 case PERL_MAGIC_defelem:
168 case PERL_MAGIC_arylen:
169 case PERL_MAGIC_pos:
170 case PERL_MAGIC_backref:
171 case PERL_MAGIC_arylen_p:
172 case PERL_MAGIC_rhash:
173 case PERL_MAGIC_symtab:
174 return 0;
175 default:
176 return 1;
177 }
178}
179
954c1994
GS
180/*
181=for apidoc mg_get
182
183Do magic after a value is retrieved from the SV. See C<sv_magic>.
184
185=cut
186*/
187
79072805 188int
864dbfa3 189Perl_mg_get(pTHX_ SV *sv)
79072805 190{
97aff369 191 dVAR;
35a4481c 192 const I32 mgs_ix = SSNEW(sizeof(MGS));
fe2774ed 193 const bool was_temp = (bool)SvTEMP(sv);
0723351e 194 int have_new = 0;
ff76feab 195 MAGIC *newmg, *head, *cur, *mg;
20135930 196 /* guard against sv having being freed midway by holding a private
6683b158
NC
197 reference. */
198
7918f24d
NC
199 PERL_ARGS_ASSERT_MG_GET;
200
6683b158
NC
201 /* sv_2mortal has this side effect of turning on the TEMP flag, which can
202 cause the SV's buffer to get stolen (and maybe other stuff).
203 So restore it.
204 */
46da273f 205 sv_2mortal(SvREFCNT_inc_simple_NN(sv));
6683b158
NC
206 if (!was_temp) {
207 SvTEMP_off(sv);
208 }
209
455ece5e 210 save_magic(mgs_ix, sv);
463ee0b2 211
ff76feab
AMS
212 /* We must call svt_get(sv, mg) for each valid entry in the linked
213 list of magic. svt_get() may delete the current entry, add new
214 magic to the head of the list, or upgrade the SV. AMS 20010810 */
215
216 newmg = cur = head = mg = SvMAGIC(sv);
217 while (mg) {
35a4481c 218 const MGVTBL * const vtbl = mg->mg_virtual;
ff76feab 219
2b260de0 220 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
316ad4fe 221 CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg);
b77f7d40 222
58f82c5c
DM
223 /* guard against magic having been deleted - eg FETCH calling
224 * untie */
225 if (!SvMAGIC(sv))
226 break;
b77f7d40 227
ff76feab
AMS
228 /* Don't restore the flags for this entry if it was deleted. */
229 if (mg->mg_flags & MGf_GSKIP)
230 (SSPTR(mgs_ix, MGS *))->mgs_flags = 0;
a0d0e21e 231 }
ff76feab
AMS
232
233 mg = mg->mg_moremagic;
234
0723351e 235 if (have_new) {
ff76feab
AMS
236 /* Have we finished with the new entries we saw? Start again
237 where we left off (unless there are more new entries). */
238 if (mg == head) {
0723351e 239 have_new = 0;
ff76feab
AMS
240 mg = cur;
241 head = newmg;
242 }
243 }
244
245 /* Were any new entries added? */
0723351e
NC
246 if (!have_new && (newmg = SvMAGIC(sv)) != head) {
247 have_new = 1;
ff76feab
AMS
248 cur = mg;
249 mg = newmg;
760ac839 250 }
79072805 251 }
463ee0b2 252
8772537c 253 restore_magic(INT2PTR(void *, (IV)mgs_ix));
6683b158
NC
254
255 if (SvREFCNT(sv) == 1) {
256 /* We hold the last reference to this SV, which implies that the
257 SV was deleted as a side effect of the routines we called. */
0c34ef67 258 SvOK_off(sv);
6683b158 259 }
79072805
LW
260 return 0;
261}
262
954c1994
GS
263/*
264=for apidoc mg_set
265
266Do magic after a value is assigned to the SV. See C<sv_magic>.
267
268=cut
269*/
270
79072805 271int
864dbfa3 272Perl_mg_set(pTHX_ SV *sv)
79072805 273{
97aff369 274 dVAR;
35a4481c 275 const I32 mgs_ix = SSNEW(sizeof(MGS));
79072805 276 MAGIC* mg;
463ee0b2
LW
277 MAGIC* nextmg;
278
7918f24d
NC
279 PERL_ARGS_ASSERT_MG_SET;
280
455ece5e 281 save_magic(mgs_ix, sv);
463ee0b2
LW
282
283 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
e1ec3a88 284 const MGVTBL* vtbl = mg->mg_virtual;
463ee0b2 285 nextmg = mg->mg_moremagic; /* it may delete itself */
a0d0e21e
LW
286 if (mg->mg_flags & MGf_GSKIP) {
287 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
455ece5e 288 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
a0d0e21e 289 }
e7cbf6c6
DM
290 if (PL_localizing == 2 && !S_is_container_magic(mg))
291 continue;
2b260de0 292 if (vtbl && vtbl->svt_set)
fc0dc3b3 293 CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg);
79072805 294 }
463ee0b2 295
8772537c 296 restore_magic(INT2PTR(void*, (IV)mgs_ix));
79072805
LW
297 return 0;
298}
299
954c1994
GS
300/*
301=for apidoc mg_length
302
303Report on the SV's length. See C<sv_magic>.
304
305=cut
306*/
307
79072805 308U32
864dbfa3 309Perl_mg_length(pTHX_ SV *sv)
79072805 310{
97aff369 311 dVAR;
79072805 312 MAGIC* mg;
463ee0b2 313 STRLEN len;
463ee0b2 314
7918f24d
NC
315 PERL_ARGS_ASSERT_MG_LENGTH;
316
79072805 317 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
35a4481c 318 const MGVTBL * const vtbl = mg->mg_virtual;
2b260de0 319 if (vtbl && vtbl->svt_len) {
35a4481c 320 const I32 mgs_ix = SSNEW(sizeof(MGS));
455ece5e 321 save_magic(mgs_ix, sv);
a0d0e21e 322 /* omit MGf_GSKIP -- not changed here */
fc0dc3b3 323 len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
8772537c 324 restore_magic(INT2PTR(void*, (IV)mgs_ix));
85e6fe83
LW
325 return len;
326 }
327 }
328
d0644529
NC
329 {
330 /* You can't know whether it's UTF-8 until you get the string again...
331 */
10516c54 332 const U8 *s = (U8*)SvPV_const(sv, len);
d0644529
NC
333
334 if (DO_UTF8(sv)) {
335 len = utf8_length(s, s + len);
336 }
5636d518 337 }
463ee0b2 338 return len;
79072805
LW
339}
340
8fb26106 341I32
864dbfa3 342Perl_mg_size(pTHX_ SV *sv)
93965878
NIS
343{
344 MAGIC* mg;
ac27b0f5 345
7918f24d
NC
346 PERL_ARGS_ASSERT_MG_SIZE;
347
93965878 348 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
35a4481c 349 const MGVTBL* const vtbl = mg->mg_virtual;
2b260de0 350 if (vtbl && vtbl->svt_len) {
35a4481c
AL
351 const I32 mgs_ix = SSNEW(sizeof(MGS));
352 I32 len;
455ece5e 353 save_magic(mgs_ix, sv);
93965878 354 /* omit MGf_GSKIP -- not changed here */
fc0dc3b3 355 len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
8772537c 356 restore_magic(INT2PTR(void*, (IV)mgs_ix));
93965878
NIS
357 return len;
358 }
359 }
360
361 switch(SvTYPE(sv)) {
362 case SVt_PVAV:
502c6561 363 return AvFILLp((const AV *) sv); /* Fallback to non-tied array */
93965878
NIS
364 case SVt_PVHV:
365 /* FIXME */
366 default:
cea2e8a9 367 Perl_croak(aTHX_ "Size magic not implemented");
93965878
NIS
368 break;
369 }
370 return 0;
371}
372
954c1994
GS
373/*
374=for apidoc mg_clear
375
376Clear something magical that the SV represents. See C<sv_magic>.
377
378=cut
379*/
380
79072805 381int
864dbfa3 382Perl_mg_clear(pTHX_ SV *sv)
79072805 383{
35a4481c 384 const I32 mgs_ix = SSNEW(sizeof(MGS));
79072805 385 MAGIC* mg;
463ee0b2 386
7918f24d
NC
387 PERL_ARGS_ASSERT_MG_CLEAR;
388
455ece5e 389 save_magic(mgs_ix, sv);
463ee0b2 390
79072805 391 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
35a4481c 392 const MGVTBL* const vtbl = mg->mg_virtual;
a0d0e21e 393 /* omit GSKIP -- never set here */
727405f8 394
2b260de0 395 if (vtbl && vtbl->svt_clear)
fc0dc3b3 396 CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg);
79072805 397 }
463ee0b2 398
8772537c 399 restore_magic(INT2PTR(void*, (IV)mgs_ix));
79072805
LW
400 return 0;
401}
402
954c1994
GS
403/*
404=for apidoc mg_find
405
406Finds the magic pointer for type matching the SV. See C<sv_magic>.
407
408=cut
409*/
410
93a17b20 411MAGIC*
35a4481c 412Perl_mg_find(pTHX_ const SV *sv, int type)
93a17b20 413{
96a5add6 414 PERL_UNUSED_CONTEXT;
35a4481c
AL
415 if (sv) {
416 MAGIC *mg;
417 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
418 if (mg->mg_type == type)
419 return mg;
420 }
93a17b20 421 }
5f66b61c 422 return NULL;
93a17b20
LW
423}
424
954c1994
GS
425/*
426=for apidoc mg_copy
427
428Copies the magic from one SV to another. See C<sv_magic>.
429
430=cut
431*/
432
79072805 433int
864dbfa3 434Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen)
79072805 435{
463ee0b2 436 int count = 0;
79072805 437 MAGIC* mg;
7918f24d
NC
438
439 PERL_ARGS_ASSERT_MG_COPY;
440
463ee0b2 441 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
35a4481c 442 const MGVTBL* const vtbl = mg->mg_virtual;
68795e93
NIS
443 if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){
444 count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen);
445 }
823a54a3
AL
446 else {
447 const char type = mg->mg_type;
1e73acc8 448 if (isUPPER(type) && type != PERL_MAGIC_uvar) {
823a54a3
AL
449 sv_magic(nsv,
450 (type == PERL_MAGIC_tied)
451 ? SvTIED_obj(sv, mg)
452 : (type == PERL_MAGIC_regdata && mg->mg_obj)
453 ? sv
454 : mg->mg_obj,
455 toLOWER(type), key, klen);
456 count++;
457 }
79072805 458 }
79072805 459 }
463ee0b2 460 return count;
79072805
LW
461}
462
954c1994 463/*
0cbee0a4
DM
464=for apidoc mg_localize
465
9711599e
CS
466Copy some of the magic from an existing SV to new localized version of that
467SV. Container magic (eg %ENV, $1, tie) gets copied, value magic doesn't (eg
468taint, pos).
469
af7df257 470If setmagic is false then no set magic will be called on the new (empty) SV.
9711599e
CS
471This typically means that assignment will soon follow (e.g. 'local $x = $y'),
472and that will handle the magic.
0cbee0a4
DM
473
474=cut
475*/
476
477void
af7df257 478Perl_mg_localize(pTHX_ SV *sv, SV *nsv, bool setmagic)
0cbee0a4 479{
97aff369 480 dVAR;
0cbee0a4 481 MAGIC *mg;
7918f24d
NC
482
483 PERL_ARGS_ASSERT_MG_LOCALIZE;
484
0cbee0a4 485 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
2b1b43ea 486 const MGVTBL* const vtbl = mg->mg_virtual;
2767dea0 487 if (!S_is_container_magic(mg))
0cbee0a4 488 continue;
0cbee0a4 489
a5063e7c
DM
490 if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local)
491 (void)CALL_FPTR(vtbl->svt_local)(aTHX_ nsv, mg);
492 else
0cbee0a4
DM
493 sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl,
494 mg->mg_ptr, mg->mg_len);
a5063e7c 495
0cbee0a4
DM
496 /* container types should remain read-only across localization */
497 SvFLAGS(nsv) |= SvREADONLY(sv);
498 }
499
500 if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) {
501 SvFLAGS(nsv) |= SvMAGICAL(sv);
af7df257 502 if (setmagic) {
9711599e
CS
503 PL_localizing = 1;
504 SvSETMAGIC(nsv);
505 PL_localizing = 0;
506 }
0cbee0a4
DM
507 }
508}
509
510/*
954c1994
GS
511=for apidoc mg_free
512
513Free any magic storage used by the SV. See C<sv_magic>.
514
515=cut
516*/
517
79072805 518int
864dbfa3 519Perl_mg_free(pTHX_ SV *sv)
79072805
LW
520{
521 MAGIC* mg;
522 MAGIC* moremagic;
7918f24d
NC
523
524 PERL_ARGS_ASSERT_MG_FREE;
525
79072805 526 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
35a4481c 527 const MGVTBL* const vtbl = mg->mg_virtual;
79072805 528 moremagic = mg->mg_moremagic;
2b260de0 529 if (vtbl && vtbl->svt_free)
fc0dc3b3 530 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
14befaf4 531 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) {
979acdb5 532 if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8)
88e89b8a 533 Safefree(mg->mg_ptr);
565764a8 534 else if (mg->mg_len == HEf_SVKEY)
ad64d0ec 535 SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr));
d460ef45 536 }
b881518d
JH
537 if (mg->mg_flags & MGf_REFCOUNTED)
538 SvREFCNT_dec(mg->mg_obj);
79072805 539 Safefree(mg);
c826f41b 540 SvMAGIC_set(sv, moremagic);
79072805 541 }
b162af07 542 SvMAGIC_set(sv, NULL);
68f8932e 543 SvMAGICAL_off(sv);
79072805
LW
544 return 0;
545}
546
79072805 547#include <signal.h>
79072805 548
942e002e 549U32
864dbfa3 550Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
6cef1e77 551{
97aff369 552 dVAR;
8772537c 553 PERL_UNUSED_ARG(sv);
6cef1e77 554
7918f24d
NC
555 PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT;
556
0bd48802
AL
557 if (PL_curpm) {
558 register const REGEXP * const rx = PM_GETRE(PL_curpm);
559 if (rx) {
a678b0e4
YO
560 if (mg->mg_obj) { /* @+ */
561 /* return the number possible */
07bc277f 562 return RX_NPARENS(rx);
a678b0e4 563 } else { /* @- */
07bc277f 564 I32 paren = RX_LASTPAREN(rx);
a678b0e4
YO
565
566 /* return the last filled */
f46c4081 567 while ( paren >= 0
07bc277f
NC
568 && (RX_OFFS(rx)[paren].start == -1
569 || RX_OFFS(rx)[paren].end == -1) )
f46c4081 570 paren--;
a678b0e4
YO
571 return (U32)paren;
572 }
0bd48802 573 }
8f580fb8 574 }
ac27b0f5 575
942e002e 576 return (U32)-1;
6cef1e77
IZ
577}
578
579int
864dbfa3 580Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
6cef1e77 581{
97aff369 582 dVAR;
7918f24d
NC
583
584 PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET;
585
0bd48802
AL
586 if (PL_curpm) {
587 register const REGEXP * const rx = PM_GETRE(PL_curpm);
588 if (rx) {
589 register const I32 paren = mg->mg_len;
590 register I32 s;
591 register I32 t;
592 if (paren < 0)
593 return 0;
07bc277f
NC
594 if (paren <= (I32)RX_NPARENS(rx) &&
595 (s = RX_OFFS(rx)[paren].start) != -1 &&
596 (t = RX_OFFS(rx)[paren].end) != -1)
0bd48802
AL
597 {
598 register I32 i;
599 if (mg->mg_obj) /* @+ */
600 i = t;
601 else /* @- */
602 i = s;
603
604 if (i > 0 && RX_MATCH_UTF8(rx)) {
07bc277f 605 const char * const b = RX_SUBBEG(rx);
0bd48802 606 if (b)
f5a63d97 607 i = utf8_length((U8*)b, (U8*)(b+i));
0bd48802 608 }
727405f8 609
0bd48802 610 sv_setiv(sv, i);
1aa99e6b 611 }
0bd48802 612 }
6cef1e77
IZ
613 }
614 return 0;
615}
616
e4b89193 617int
a29d06ed
MG
618Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg)
619{
7918f24d 620 PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET;
d4c19fe8
AL
621 PERL_UNUSED_ARG(sv);
622 PERL_UNUSED_ARG(mg);
f1f66076 623 Perl_croak(aTHX_ "%s", PL_no_modify);
0dbb1585 624 NORETURN_FUNCTION_END;
a29d06ed
MG
625}
626
93a17b20 627U32
864dbfa3 628Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
93a17b20 629{
97aff369 630 dVAR;
93a17b20 631 register I32 paren;
93a17b20 632 register I32 i;
2fdbfb4d
AB
633 register const REGEXP * rx;
634 const char * const remaining = mg->mg_ptr + 1;
93a17b20 635
7918f24d
NC
636 PERL_ARGS_ASSERT_MAGIC_LEN;
637
93a17b20 638 switch (*mg->mg_ptr) {
2fdbfb4d
AB
639 case '\020':
640 if (*remaining == '\0') { /* ^P */
641 break;
642 } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */
643 goto do_prematch;
644 } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */
645 goto do_postmatch;
646 }
647 break;
648 case '\015': /* $^MATCH */
649 if (strEQ(remaining, "ATCH")) {
650 goto do_match;
651 } else {
652 break;
653 }
654 case '`':
655 do_prematch:
f1b875a0 656 paren = RX_BUFF_IDX_PREMATCH;
2fdbfb4d
AB
657 goto maybegetparen;
658 case '\'':
659 do_postmatch:
f1b875a0 660 paren = RX_BUFF_IDX_POSTMATCH;
2fdbfb4d
AB
661 goto maybegetparen;
662 case '&':
663 do_match:
f1b875a0 664 paren = RX_BUFF_IDX_FULLMATCH;
2fdbfb4d 665 goto maybegetparen;
93a17b20 666 case '1': case '2': case '3': case '4':
2fdbfb4d
AB
667 case '5': case '6': case '7': case '8': case '9':
668 paren = atoi(mg->mg_ptr);
669 maybegetparen:
aaa362c4 670 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
2fdbfb4d
AB
671 getparen:
672 i = CALLREG_NUMBUF_LENGTH((REGEXP * const)rx, sv, paren);
cf93c79d 673
ffc61ed2 674 if (i < 0)
0844c848 675 Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i);
ffc61ed2 676 return i;
2fdbfb4d 677 } else {
235bddc8 678 if (ckWARN(WARN_UNINITIALIZED))
29489e7c 679 report_uninit(sv);
2fdbfb4d 680 return 0;
93a17b20 681 }
93a17b20 682 case '+':
aaa362c4 683 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
07bc277f 684 paren = RX_LASTPAREN(rx);
13f57bf8
CS
685 if (paren)
686 goto getparen;
93a17b20 687 }
748a9306 688 return 0;
a01268b5
JH
689 case '\016': /* ^N */
690 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
07bc277f 691 paren = RX_LASTCLOSEPAREN(rx);
a01268b5
JH
692 if (paren)
693 goto getparen;
694 }
695 return 0;
93a17b20
LW
696 }
697 magic_get(sv,mg);
2d8e6c8d 698 if (!SvPOK(sv) && SvNIOK(sv)) {
8b6b16e7 699 sv_2pv(sv, 0);
2d8e6c8d 700 }
93a17b20
LW
701 if (SvPOK(sv))
702 return SvCUR(sv);
703 return 0;
704}
705
ad3296c6 706#define SvRTRIM(sv) STMT_START { \
eae92ea0
GA
707 if (SvPOK(sv)) { \
708 STRLEN len = SvCUR(sv); \
709 char * const p = SvPVX(sv); \
8e6b4db6
PC
710 while (len > 0 && isSPACE(p[len-1])) \
711 --len; \
712 SvCUR_set(sv, len); \
713 p[len] = '\0'; \
714 } \
ad3296c6
SH
715} STMT_END
716
8b850bd5
NC
717void
718Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv)
719{
7918f24d
NC
720 PERL_ARGS_ASSERT_EMULATE_COP_IO;
721
8b850bd5
NC
722 if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT)))
723 sv_setsv(sv, &PL_sv_undef);
724 else {
725 sv_setpvs(sv, "");
726 SvUTF8_off(sv);
727 if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) {
728 SV *const value = Perl_refcounted_he_fetch(aTHX_
729 c->cop_hints_hash,
730 0, "open<", 5, 0, 0);
731 assert(value);
732 sv_catsv(sv, value);
733 }
734 sv_catpvs(sv, "\0");
735 if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) {
736 SV *const value = Perl_refcounted_he_fetch(aTHX_
737 c->cop_hints_hash,
738 0, "open>", 5, 0, 0);
739 assert(value);
740 sv_catsv(sv, value);
741 }
742 }
743}
744
79072805 745int
864dbfa3 746Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
79072805 747{
27da23d5 748 dVAR;
79072805 749 register I32 paren;
35272f84 750 register char *s = NULL;
d9f97599 751 register REGEXP *rx;
823a54a3
AL
752 const char * const remaining = mg->mg_ptr + 1;
753 const char nextchar = *remaining;
79072805 754
7918f24d
NC
755 PERL_ARGS_ASSERT_MAGIC_GET;
756
79072805 757 switch (*mg->mg_ptr) {
748a9306 758 case '\001': /* ^A */
3280af22 759 sv_setsv(sv, PL_bodytarget);
748a9306 760 break;
e5218da5 761 case '\003': /* ^C, ^CHILD_ERROR_NATIVE */
823a54a3 762 if (nextchar == '\0') {
e5218da5
GA
763 sv_setiv(sv, (IV)PL_minus_c);
764 }
823a54a3 765 else if (strEQ(remaining, "HILD_ERROR_NATIVE")) {
e5218da5
GA
766 sv_setiv(sv, (IV)STATUS_NATIVE);
767 }
49460fe6
NIS
768 break;
769
79072805 770 case '\004': /* ^D */
aea4f609 771 sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK));
79072805 772 break;
28f23441 773 case '\005': /* ^E */
823a54a3 774 if (nextchar == '\0') {
e37778c2 775#if defined(VMS)
0a378802
JH
776 {
777# include <descrip.h>
778# include <starlet.h>
779 char msg[255];
780 $DESCRIPTOR(msgdsc,msg);
781 sv_setnv(sv,(NV) vaxc$errno);
782 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
783 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
784 else
76f68e9b 785 sv_setpvs(sv,"");
0a378802 786 }
4b645107 787#elif defined(OS2)
0a378802
JH
788 if (!(_emx_env & 0x200)) { /* Under DOS */
789 sv_setnv(sv, (NV)errno);
790 sv_setpv(sv, errno ? Strerror(errno) : "");
791 } else {
792 if (errno != errno_isOS2) {
823a54a3 793 const int tmp = _syserrno();
0a378802
JH
794 if (tmp) /* 2nd call to _syserrno() makes it 0 */
795 Perl_rc = tmp;
796 }
797 sv_setnv(sv, (NV)Perl_rc);
798 sv_setpv(sv, os2error(Perl_rc));
799 }
4b645107 800#elif defined(WIN32)
0a378802 801 {
d4c19fe8 802 const DWORD dwErr = GetLastError();
0a378802 803 sv_setnv(sv, (NV)dwErr);
823a54a3 804 if (dwErr) {
0a378802
JH
805 PerlProc_GetOSError(sv, dwErr);
806 }
807 else
76f68e9b 808 sv_setpvs(sv, "");
0a378802
JH
809 SetLastError(dwErr);
810 }
22fae026 811#else
f6c8f21d 812 {
4ee39169 813 dSAVE_ERRNO;
f6c8f21d 814 sv_setnv(sv, (NV)errno);
666ea192 815 sv_setpv(sv, errno ? Strerror(errno) : "");
4ee39169 816 RESTORE_ERRNO;
f6c8f21d 817 }
28f23441 818#endif
ad3296c6 819 SvRTRIM(sv);
0a378802
JH
820 SvNOK_on(sv); /* what a wonderful hack! */
821 }
823a54a3 822 else if (strEQ(remaining, "NCODING"))
0a378802
JH
823 sv_setsv(sv, PL_encoding);
824 break;
79072805 825 case '\006': /* ^F */
3280af22 826 sv_setiv(sv, (IV)PL_maxsysfd);
79072805 827 break;
a0d0e21e 828 case '\010': /* ^H */
3280af22 829 sv_setiv(sv, (IV)PL_hints);
a0d0e21e 830 break;
9d116dd7 831 case '\011': /* ^I */ /* NOT \t in EBCDIC */
120f7abe 832 sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */
79072805 833 break;
ac27b0f5 834 case '\017': /* ^O & ^OPEN */
823a54a3 835 if (nextchar == '\0') {
ac27b0f5 836 sv_setpv(sv, PL_osname);
3511154c
DM
837 SvTAINTED_off(sv);
838 }
823a54a3 839 else if (strEQ(remaining, "PEN")) {
8b850bd5 840 Perl_emulate_cop_io(aTHX_ &PL_compiling, sv);
ac27b0f5 841 }
28f23441 842 break;
cde0cee5
YO
843 case '\020':
844 if (nextchar == '\0') { /* ^P */
845 sv_setiv(sv, (IV)PL_perldb);
846 } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */
847 goto do_prematch_fetch;
848 } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */
849 goto do_postmatch_fetch;
850 }
79072805 851 break;
fb73857a 852 case '\023': /* ^S */
823a54a3 853 if (nextchar == '\0') {
bc177e6b 854 if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
0c34ef67 855 SvOK_off(sv);
3280af22 856 else if (PL_in_eval)
6dc8a9e4 857 sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE));
a4268c0a
AMS
858 else
859 sv_setiv(sv, 0);
d58bf5aa 860 }
fb73857a 861 break;
79072805 862 case '\024': /* ^T */
823a54a3 863 if (nextchar == '\0') {
88e89b8a 864#ifdef BIG_TIME
7c36658b 865 sv_setnv(sv, PL_basetime);
88e89b8a 866#else
7c36658b 867 sv_setiv(sv, (IV)PL_basetime);
88e89b8a 868#endif
7c36658b 869 }
823a54a3 870 else if (strEQ(remaining, "AINT"))
9aa05f58
RGS
871 sv_setiv(sv, PL_tainting
872 ? (PL_taint_warn || PL_unsafe ? -1 : 1)
873 : 0);
7c36658b 874 break;
e07ea26a 875 case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */
823a54a3 876 if (strEQ(remaining, "NICODE"))
a05d7ebb 877 sv_setuv(sv, (UV) PL_unicode);
823a54a3 878 else if (strEQ(remaining, "TF8LOCALE"))
7cebcbc0 879 sv_setuv(sv, (UV) PL_utf8locale);
e07ea26a
NC
880 else if (strEQ(remaining, "TF8CACHE"))
881 sv_setiv(sv, (IV) PL_utf8cache);
fde18df1
JH
882 break;
883 case '\027': /* ^W & $^WARNING_BITS */
823a54a3 884 if (nextchar == '\0')
4438c4b7 885 sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
823a54a3 886 else if (strEQ(remaining, "ARNING_BITS")) {
013b78e8 887 if (PL_compiling.cop_warnings == pWARN_NONE) {
4438c4b7 888 sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
013b78e8
RGS
889 }
890 else if (PL_compiling.cop_warnings == pWARN_STD) {
666ea192
JH
891 sv_setpvn(
892 sv,
893 (PL_dowarn & G_WARN_ON) ? WARN_ALLstring : WARN_NONEstring,
894 WARNsize
895 );
013b78e8 896 }
d3a7d8c7 897 else if (PL_compiling.cop_warnings == pWARN_ALL) {
75b6c4ca
RGS
898 /* Get the bit mask for $warnings::Bits{all}, because
899 * it could have been extended by warnings::register */
6673a63c 900 HV * const bits=get_hv("warnings::Bits", 0);
f5a63d97
AL
901 if (bits) {
902 SV ** const bits_all = hv_fetchs(bits, "all", FALSE);
903 if (bits_all)
904 sv_setsv(sv, *bits_all);
75b6c4ca
RGS
905 }
906 else {
907 sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
908 }
ac27b0f5 909 }
4438c4b7 910 else {
72dc9ed5
NC
911 sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1),
912 *PL_compiling.cop_warnings);
ac27b0f5 913 }
d3a7d8c7 914 SvPOK_only(sv);
4438c4b7 915 }
79072805 916 break;
cde0cee5
YO
917 case '\015': /* $^MATCH */
918 if (strEQ(remaining, "ATCH")) {
79072805
LW
919 case '1': case '2': case '3': case '4':
920 case '5': case '6': case '7': case '8': case '9': case '&':
cde0cee5
YO
921 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
922 /*
159b6efe 923 * Pre-threads, this was paren = atoi(GvENAME((const GV *)mg->mg_obj));
cde0cee5
YO
924 * XXX Does the new way break anything?
925 */
926 paren = atoi(mg->mg_ptr); /* $& is in [0] */
2fdbfb4d 927 CALLREG_NUMBUF_FETCH(rx,paren,sv);
cde0cee5
YO
928 break;
929 }
930 sv_setsv(sv,&PL_sv_undef);
79072805
LW
931 }
932 break;
933 case '+':
aaa362c4 934 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
07bc277f
NC
935 if (RX_LASTPAREN(rx)) {
936 CALLREG_NUMBUF_FETCH(rx,RX_LASTPAREN(rx),sv);
44a2ac75
YO
937 break;
938 }
79072805 939 }
3280af22 940 sv_setsv(sv,&PL_sv_undef);
79072805 941 break;
a01268b5
JH
942 case '\016': /* ^N */
943 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
07bc277f
NC
944 if (RX_LASTCLOSEPAREN(rx)) {
945 CALLREG_NUMBUF_FETCH(rx,RX_LASTCLOSEPAREN(rx),sv);
44a2ac75
YO
946 break;
947 }
948
a01268b5
JH
949 }
950 sv_setsv(sv,&PL_sv_undef);
951 break;
79072805 952 case '`':
cde0cee5 953 do_prematch_fetch:
aaa362c4 954 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
2fdbfb4d 955 CALLREG_NUMBUF_FETCH(rx,-2,sv);
93b32b6d 956 break;
79072805 957 }
3280af22 958 sv_setsv(sv,&PL_sv_undef);
79072805
LW
959 break;
960 case '\'':
cde0cee5 961 do_postmatch_fetch:
aaa362c4 962 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
2fdbfb4d 963 CALLREG_NUMBUF_FETCH(rx,-1,sv);
93b32b6d 964 break;
79072805 965 }
3280af22 966 sv_setsv(sv,&PL_sv_undef);
79072805
LW
967 break;
968 case '.':
3280af22 969 if (GvIO(PL_last_in_gv)) {
357c8808 970 sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv)));
79072805 971 }
79072805
LW
972 break;
973 case '?':
809a5acc 974 {
809a5acc 975 sv_setiv(sv, (IV)STATUS_CURRENT);
ff0cee69 976#ifdef COMPLEX_STATUS
6b88bc9c
GS
977 LvTARGOFF(sv) = PL_statusvalue;
978 LvTARGLEN(sv) = PL_statusvalue_vms;
ff0cee69 979#endif
809a5acc 980 }
79072805
LW
981 break;
982 case '^':
0daa599b
RGS
983 if (GvIOp(PL_defoutgv))
984 s = IoTOP_NAME(GvIOp(PL_defoutgv));
79072805
LW
985 if (s)
986 sv_setpv(sv,s);
987 else {
3280af22 988 sv_setpv(sv,GvENAME(PL_defoutgv));
cb421d5e 989 sv_catpvs(sv,"_TOP");
79072805
LW
990 }
991 break;
992 case '~':
0daa599b
RGS
993 if (GvIOp(PL_defoutgv))
994 s = IoFMT_NAME(GvIOp(PL_defoutgv));
79072805 995 if (!s)
3280af22 996 s = GvENAME(PL_defoutgv);
79072805
LW
997 sv_setpv(sv,s);
998 break;
79072805 999 case '=':
0daa599b
RGS
1000 if (GvIOp(PL_defoutgv))
1001 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
79072805
LW
1002 break;
1003 case '-':
0daa599b
RGS
1004 if (GvIOp(PL_defoutgv))
1005 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
79072805
LW
1006 break;
1007 case '%':
0daa599b
RGS
1008 if (GvIOp(PL_defoutgv))
1009 sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
79072805 1010 break;
79072805
LW
1011 case ':':
1012 break;
1013 case '/':
1014 break;
1015 case '[':
11206fdd 1016 sv_setiv(sv, (IV)CopARYBASE_get(PL_curcop));
79072805
LW
1017 break;
1018 case '|':
0daa599b
RGS
1019 if (GvIOp(PL_defoutgv))
1020 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
79072805 1021 break;
79072805 1022 case '\\':
b2ce0fda 1023 if (PL_ors_sv)
f28098ff 1024 sv_copypv(sv, PL_ors_sv);
79072805 1025 break;
79072805 1026 case '!':
a5f75d66 1027#ifdef VMS
65202027 1028 sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
88e89b8a 1029 sv_setpv(sv, errno ? Strerror(errno) : "");
a5f75d66 1030#else
88e89b8a 1031 {
4ee39169 1032 dSAVE_ERRNO;
65202027 1033 sv_setnv(sv, (NV)errno);
88e89b8a 1034#ifdef OS2
ed344e4f
IZ
1035 if (errno == errno_isOS2 || errno == errno_isOS2_set)
1036 sv_setpv(sv, os2error(Perl_rc));
88e89b8a 1037 else
a5f75d66 1038#endif
666ea192 1039 sv_setpv(sv, errno ? Strerror(errno) : "");
4ee39169 1040 RESTORE_ERRNO;
88e89b8a
PP
1041 }
1042#endif
ad3296c6 1043 SvRTRIM(sv);
946ec16e 1044 SvNOK_on(sv); /* what a wonderful hack! */
79072805
LW
1045 break;
1046 case '<':
3280af22 1047 sv_setiv(sv, (IV)PL_uid);
79072805
LW
1048 break;
1049 case '>':
3280af22 1050 sv_setiv(sv, (IV)PL_euid);
79072805
LW
1051 break;
1052 case '(':
3280af22 1053 sv_setiv(sv, (IV)PL_gid);
79072805
LW
1054 goto add_groups;
1055 case ')':
3280af22 1056 sv_setiv(sv, (IV)PL_egid);
79072805 1057 add_groups:
79072805 1058#ifdef HAS_GETGROUPS
79072805 1059 {
57d7c65e 1060 Groups_t *gary = NULL;
fb45abb2 1061 I32 i, num_groups = getgroups(0, gary);
57d7c65e
JC
1062 Newx(gary, num_groups, Groups_t);
1063 num_groups = getgroups(num_groups, gary);
fb45abb2
GA
1064 for (i = 0; i < num_groups; i++)
1065 Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]);
57d7c65e 1066 Safefree(gary);
79072805 1067 }
155aba94 1068 (void)SvIOK_on(sv); /* what a wonderful hack! */
cd70abae 1069#endif
79072805 1070 break;
79072805
LW
1071 case '0':
1072 break;
1073 }
a0d0e21e 1074 return 0;
79072805
LW
1075}
1076
1077int
864dbfa3 1078Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg)
79072805 1079{
8772537c 1080 struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr;
79072805 1081
7918f24d
NC
1082 PERL_ARGS_ASSERT_MAGIC_GETUVAR;
1083
79072805 1084 if (uf && uf->uf_val)
24f81a43 1085 (*uf->uf_val)(aTHX_ uf->uf_index, sv);
79072805
LW
1086 return 0;
1087}
1088
1089int
864dbfa3 1090Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
79072805 1091{
27da23d5 1092 dVAR;
9ae3433d 1093 STRLEN len = 0, klen;
666ea192 1094 const char *s = SvOK(sv) ? SvPV_const(sv,len) : "";
fabdb6c0 1095 const char * const ptr = MgPV_const(mg,klen);
88e89b8a 1096 my_setenv(ptr, s);
1e422769 1097
7918f24d
NC
1098 PERL_ARGS_ASSERT_MAGIC_SETENV;
1099
a0d0e21e
LW
1100#ifdef DYNAMIC_ENV_FETCH
1101 /* We just undefd an environment var. Is a replacement */
1102 /* waiting in the wings? */
1103 if (!len) {
fabdb6c0
AL
1104 SV ** const valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE);
1105 if (valp)
4ab59fcc 1106 s = SvOK(*valp) ? SvPV_const(*valp, len) : "";
a0d0e21e
LW
1107 }
1108#endif
1e422769 1109
39e571d4 1110#if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
79072805
LW
1111 /* And you'll never guess what the dog had */
1112 /* in its mouth... */
3280af22 1113 if (PL_tainting) {
1e422769
PP
1114 MgTAINTEDDIR_off(mg);
1115#ifdef VMS
5aabfad6 1116 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
b8ffc8df 1117 char pathbuf[256], eltbuf[256], *cp, *elt;
c623ac67 1118 Stat_t sbuf;
1e422769
PP
1119 int i = 0, j = 0;
1120
6fca0082 1121 my_strlcpy(eltbuf, s, sizeof(eltbuf));
b8ffc8df 1122 elt = eltbuf;
1e422769
PP
1123 do { /* DCL$PATH may be a search list */
1124 while (1) { /* as may dev portion of any element */
1125 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
1126 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
1127 cando_by_name(S_IWUSR,0,elt) ) {
1128 MgTAINTEDDIR_on(mg);
1129 return 0;
1130 }
1131 }
bd61b366 1132 if ((cp = strchr(elt, ':')) != NULL)
1e422769
PP
1133 *cp = '\0';
1134 if (my_trnlnm(elt, eltbuf, j++))
1135 elt = eltbuf;
1136 else
1137 break;
1138 }
1139 j = 0;
1140 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
1141 }
1142#endif /* VMS */
5aabfad6 1143 if (s && klen == 4 && strEQ(ptr,"PATH")) {
8772537c 1144 const char * const strend = s + len;
463ee0b2
LW
1145
1146 while (s < strend) {
96827780 1147 char tmpbuf[256];
c623ac67 1148 Stat_t st;
5f74f29c 1149 I32 i;
f5a63d97
AL
1150#ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */
1151 const char path_sep = '|';
1152#else
1153 const char path_sep = ':';
1154#endif
96827780 1155 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
427eaa01 1156 s, strend, path_sep, &i);
463ee0b2 1157 s++;
bb7a0f54 1158 if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */
326b5008
CB
1159#ifdef VMS
1160 || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */
1161#else
1162 || *tmpbuf != '/' /* no starting slash -- assume relative path */
1163#endif
c6ed36e1 1164 || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
8990e307 1165 MgTAINTEDDIR_on(mg);
1e422769
PP
1166 return 0;
1167 }
463ee0b2 1168 }
79072805
LW
1169 }
1170 }
39e571d4 1171#endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
1e422769 1172
79072805
LW
1173 return 0;
1174}
1175
1176int
864dbfa3 1177Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg)
85e6fe83 1178{
7918f24d 1179 PERL_ARGS_ASSERT_MAGIC_CLEARENV;
8772537c 1180 PERL_UNUSED_ARG(sv);
bd61b366 1181 my_setenv(MgPV_nolen_const(mg),NULL);
85e6fe83
LW
1182 return 0;
1183}
1184
88e89b8a 1185int
864dbfa3 1186Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
fb73857a 1187{
97aff369 1188 dVAR;
7918f24d 1189 PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV;
65e66c80 1190 PERL_UNUSED_ARG(mg);
b0269e46 1191#if defined(VMS)
cea2e8a9 1192 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
fb73857a 1193#else
3280af22 1194 if (PL_localizing) {
fb73857a 1195 HE* entry;
b0269e46 1196 my_clearenv();
85fbaab2
NC
1197 hv_iterinit(MUTABLE_HV(sv));
1198 while ((entry = hv_iternext(MUTABLE_HV(sv)))) {
fb73857a
PP
1199 I32 keylen;
1200 my_setenv(hv_iterkey(entry, &keylen),
85fbaab2 1201 SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry)));
fb73857a
PP
1202 }
1203 }
1204#endif
1205 return 0;
1206}
1207
1208int
864dbfa3 1209Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
66b1d557 1210{
27da23d5 1211 dVAR;
7918f24d 1212 PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV;
8772537c
AL
1213 PERL_UNUSED_ARG(sv);
1214 PERL_UNUSED_ARG(mg);
b0269e46
AB
1215#if defined(VMS)
1216 Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
1217#else
1218 my_clearenv();
1219#endif
3e3baf6d 1220 return 0;
66b1d557
HM
1221}
1222
64ca3a65 1223#ifndef PERL_MICRO
2d4fcd5e
AJ
1224#ifdef HAS_SIGPROCMASK
1225static void
1226restore_sigmask(pTHX_ SV *save_sv)
1227{
0bd48802 1228 const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv );
f5a63d97 1229 (void)sigprocmask(SIG_SETMASK, ossetp, NULL);
2d4fcd5e
AJ
1230}
1231#endif
66b1d557 1232int
864dbfa3 1233Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
88e89b8a 1234{
97aff369 1235 dVAR;
88e89b8a 1236 /* Are we fetching a signal entry? */
8772537c 1237 const I32 i = whichsig(MgPV_nolen_const(mg));
7918f24d
NC
1238
1239 PERL_ARGS_ASSERT_MAGIC_GETSIG;
1240
e02bfb16 1241 if (i > 0) {
22c35a8c
GS
1242 if(PL_psig_ptr[i])
1243 sv_setsv(sv,PL_psig_ptr[i]);
88e89b8a 1244 else {
46da273f 1245 Sighandler_t sigstate = rsignal_state(i);
23ada85b 1246#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
46da273f
AL
1247 if (PL_sig_handlers_initted && PL_sig_ignoring[i])
1248 sigstate = SIG_IGN;
2e34cc90
CL
1249#endif
1250#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
46da273f
AL
1251 if (PL_sig_handlers_initted && PL_sig_defaulting[i])
1252 sigstate = SIG_DFL;
85b332e2 1253#endif
88e89b8a 1254 /* cache state so we don't fetch it again */
8aad04aa 1255 if(sigstate == (Sighandler_t) SIG_IGN)
6502358f 1256 sv_setpvs(sv,"IGNORE");
88e89b8a 1257 else
3280af22 1258 sv_setsv(sv,&PL_sv_undef);
46da273f 1259 PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv);
88e89b8a
PP
1260 SvTEMP_off(sv);
1261 }
1262 }
1263 return 0;
1264}
1265int
864dbfa3 1266Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg)
88e89b8a 1267{
2d4fcd5e
AJ
1268 /* XXX Some of this code was copied from Perl_magic_setsig. A little
1269 * refactoring might be in order.
1270 */
27da23d5 1271 dVAR;
8772537c 1272 register const char * const s = MgPV_nolen_const(mg);
7918f24d 1273 PERL_ARGS_ASSERT_MAGIC_CLEARSIG;
8772537c 1274 PERL_UNUSED_ARG(sv);
2d4fcd5e 1275 if (*s == '_') {
cbbf8932 1276 SV** svp = NULL;
2d4fcd5e
AJ
1277 if (strEQ(s,"__DIE__"))
1278 svp = &PL_diehook;
b274dc4e 1279 else if (strEQ(s,"__WARN__") && PL_warnhook != PERL_WARNHOOK_FATAL)
2d4fcd5e 1280 svp = &PL_warnhook;
27da23d5 1281 if (svp && *svp) {
b274dc4e 1282 SV *const to_dec = *svp;
cbbf8932 1283 *svp = NULL;
b274dc4e 1284 SvREFCNT_dec(to_dec);
2d4fcd5e
AJ
1285 }
1286 }
1287 else {
2d4fcd5e 1288 /* Are we clearing a signal entry? */
8772537c 1289 const I32 i = whichsig(s);
e02bfb16 1290 if (i > 0) {
2d4fcd5e
AJ
1291#ifdef HAS_SIGPROCMASK
1292 sigset_t set, save;
1293 SV* save_sv;
1294 /* Avoid having the signal arrive at a bad time, if possible. */
1295 sigemptyset(&set);
1296 sigaddset(&set,i);
1297 sigprocmask(SIG_BLOCK, &set, &save);
1298 ENTER;
9ff8e806 1299 save_sv = newSVpvn((char *)(&save), sizeof(sigset_t));
2d4fcd5e
AJ
1300 SAVEFREESV(save_sv);
1301 SAVEDESTRUCTOR_X(restore_sigmask, save_sv);
1302#endif
1303 PERL_ASYNC_CHECK();
1304#if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS)
27da23d5 1305 if (!PL_sig_handlers_initted) Perl_csighandler_init();
2d4fcd5e
AJ
1306#endif
1307#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
27da23d5 1308 PL_sig_defaulting[i] = 1;
5c1546dc 1309 (void)rsignal(i, PL_csighandlerp);
2d4fcd5e 1310#else
8aad04aa 1311 (void)rsignal(i, (Sighandler_t) SIG_DFL);
2d4fcd5e
AJ
1312#endif
1313 if(PL_psig_name[i]) {
1314 SvREFCNT_dec(PL_psig_name[i]);
1315 PL_psig_name[i]=0;
1316 }
1317 if(PL_psig_ptr[i]) {
6136c704 1318 SV * const to_dec=PL_psig_ptr[i];
2d4fcd5e 1319 PL_psig_ptr[i]=0;
79f85828 1320#ifdef HAS_SIGPROCMASK
2d4fcd5e 1321 LEAVE;
79f85828 1322#endif
2d4fcd5e
AJ
1323 SvREFCNT_dec(to_dec);
1324 }
79f85828 1325#ifdef HAS_SIGPROCMASK
2d4fcd5e
AJ
1326 else
1327 LEAVE;
79f85828 1328#endif
2d4fcd5e 1329 }
88e89b8a
PP
1330 }
1331 return 0;
1332}
3d37d572 1333
0a8e0eff 1334Signal_t
8aad04aa 1335#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
b6455c53 1336Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL)
8aad04aa 1337#else
0a8e0eff 1338Perl_csighandler(int sig)
8aad04aa 1339#endif
0a8e0eff 1340{
1018e26f
NIS
1341#ifdef PERL_GET_SIG_CONTEXT
1342 dTHXa(PERL_GET_SIG_CONTEXT);
1343#else
85b332e2
CL
1344 dTHX;
1345#endif
23ada85b 1346#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
5c1546dc 1347 (void) rsignal(sig, PL_csighandlerp);
27da23d5 1348 if (PL_sig_ignoring[sig]) return;
85b332e2 1349#endif
2e34cc90 1350#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
27da23d5 1351 if (PL_sig_defaulting[sig])
2e34cc90
CL
1352#ifdef KILL_BY_SIGPRC
1353 exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG);
1354#else
1355 exit(1);
1356#endif
1357#endif
406878dd 1358 if (
853d2c32
RGS
1359#ifdef SIGILL
1360 sig == SIGILL ||
1361#endif
1362#ifdef SIGBUS
1363 sig == SIGBUS ||
1364#endif
1365#ifdef SIGSEGV
1366 sig == SIGSEGV ||
1367#endif
1368 (PL_signals & PERL_SIGNALS_UNSAFE_FLAG))
4ffa73a3
JH
1369 /* Call the perl level handler now--
1370 * with risk we may be in malloc() etc. */
6e324d09 1371#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
80626cf1 1372 (*PL_sighandlerp)(sig, NULL, NULL);
6e324d09
CB
1373#else
1374 (*PL_sighandlerp)(sig);
92807b6d 1375#endif
406878dd
GA
1376 else {
1377 /* Set a flag to say this signal is pending, that is awaiting delivery after
1378 * the current Perl opcode completes */
1379 PL_psig_pend[sig]++;
1380
1381#ifndef SIG_PENDING_DIE_COUNT
1382# define SIG_PENDING_DIE_COUNT 120
1383#endif
1384 /* And one to say _a_ signal is pending */
1385 if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT)
1386 Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded",
1387 (unsigned long)SIG_PENDING_DIE_COUNT);
1388 }
0a8e0eff
NIS
1389}
1390
2e34cc90
CL
1391#if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS)
1392void
1393Perl_csighandler_init(void)
1394{
1395 int sig;
27da23d5 1396 if (PL_sig_handlers_initted) return;
2e34cc90
CL
1397
1398 for (sig = 1; sig < SIG_SIZE; sig++) {
1399#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
218fdd94 1400 dTHX;
27da23d5 1401 PL_sig_defaulting[sig] = 1;
5c1546dc 1402 (void) rsignal(sig, PL_csighandlerp);
2e34cc90
CL
1403#endif
1404#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
27da23d5 1405 PL_sig_ignoring[sig] = 0;
2e34cc90
CL
1406#endif
1407 }
27da23d5 1408 PL_sig_handlers_initted = 1;
2e34cc90
CL
1409}
1410#endif
1411
0a8e0eff
NIS
1412void
1413Perl_despatch_signals(pTHX)
1414{
97aff369 1415 dVAR;
0a8e0eff
NIS
1416 int sig;
1417 PL_sig_pending = 0;
1418 for (sig = 1; sig < SIG_SIZE; sig++) {
1419 if (PL_psig_pend[sig]) {
25da4428
JH
1420 PERL_BLOCKSIG_ADD(set, sig);
1421 PL_psig_pend[sig] = 0;
1422 PERL_BLOCKSIG_BLOCK(set);
6e324d09 1423#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
80626cf1 1424 (*PL_sighandlerp)(sig, NULL, NULL);
6e324d09
CB
1425#else
1426 (*PL_sighandlerp)(sig);
92807b6d 1427#endif
25da4428 1428 PERL_BLOCKSIG_UNBLOCK(set);
0a8e0eff
NIS
1429 }
1430 }
1431}
1432
85e6fe83 1433int
864dbfa3 1434Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
79072805 1435{
27da23d5 1436 dVAR;
79072805 1437 I32 i;
cbbf8932 1438 SV** svp = NULL;
2d4fcd5e
AJ
1439 /* Need to be careful with SvREFCNT_dec(), because that can have side
1440 * effects (due to closures). We must make sure that the new disposition
1441 * is in place before it is called.
1442 */
cbbf8932 1443 SV* to_dec = NULL;
e72dc28c 1444 STRLEN len;
2d4fcd5e
AJ
1445#ifdef HAS_SIGPROCMASK
1446 sigset_t set, save;
1447 SV* save_sv;
1448#endif
d5263905 1449 register const char *s = MgPV_const(mg,len);
7918f24d
NC
1450
1451 PERL_ARGS_ASSERT_MAGIC_SETSIG;
1452
748a9306
LW
1453 if (*s == '_') {
1454 if (strEQ(s,"__DIE__"))
3280af22 1455 svp = &PL_diehook;
748a9306 1456 else if (strEQ(s,"__WARN__"))
3280af22 1457 svp = &PL_warnhook;
748a9306 1458 else
cea2e8a9 1459 Perl_croak(aTHX_ "No such hook: %s", s);
748a9306 1460 i = 0;
4633a7c4 1461 if (*svp) {
9289f461
RGS
1462 if (*svp != PERL_WARNHOOK_FATAL)
1463 to_dec = *svp;
cbbf8932 1464 *svp = NULL;
4633a7c4 1465 }
748a9306
LW
1466 }
1467 else {
1468 i = whichsig(s); /* ...no, a brick */
86d86cad 1469 if (i <= 0) {
e476b1b5 1470 if (ckWARN(WARN_SIGNAL))
9014280d 1471 Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s);
748a9306
LW
1472 return 0;
1473 }
2d4fcd5e
AJ
1474#ifdef HAS_SIGPROCMASK
1475 /* Avoid having the signal arrive at a bad time, if possible. */
1476 sigemptyset(&set);
1477 sigaddset(&set,i);
1478 sigprocmask(SIG_BLOCK, &set, &save);
1479 ENTER;
9ff8e806 1480 save_sv = newSVpvn((char *)(&save), sizeof(sigset_t));
2d4fcd5e
AJ
1481 SAVEFREESV(save_sv);
1482 SAVEDESTRUCTOR_X(restore_sigmask, save_sv);
1483#endif
1484 PERL_ASYNC_CHECK();
2e34cc90 1485#if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS)
27da23d5 1486 if (!PL_sig_handlers_initted) Perl_csighandler_init();
2e34cc90 1487#endif
23ada85b 1488#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
27da23d5 1489 PL_sig_ignoring[i] = 0;
85b332e2 1490#endif
2e34cc90 1491#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
27da23d5 1492 PL_sig_defaulting[i] = 0;
2e34cc90 1493#endif
22c35a8c 1494 SvREFCNT_dec(PL_psig_name[i]);
2d4fcd5e 1495 to_dec = PL_psig_ptr[i];
46da273f 1496 PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv);
88e89b8a 1497 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
e72dc28c 1498 PL_psig_name[i] = newSVpvn(s, len);
22c35a8c 1499 SvREADONLY_on(PL_psig_name[i]);
748a9306 1500 }
6e592b3a 1501 if (isGV_with_GP(sv) || SvROK(sv)) {
2d4fcd5e 1502 if (i) {
5c1546dc 1503 (void)rsignal(i, PL_csighandlerp);
2d4fcd5e
AJ
1504#ifdef HAS_SIGPROCMASK
1505 LEAVE;
1506#endif
1507 }
748a9306 1508 else
b37c2d43 1509 *svp = SvREFCNT_inc_simple_NN(sv);
2d4fcd5e
AJ
1510 if(to_dec)
1511 SvREFCNT_dec(to_dec);
a0d0e21e
LW
1512 return 0;
1513 }
baf38871 1514 s = SvOK(sv) ? SvPV_force(sv,len) : "DEFAULT";
748a9306 1515 if (strEQ(s,"IGNORE")) {
85b332e2 1516 if (i) {
23ada85b 1517#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
27da23d5 1518 PL_sig_ignoring[i] = 1;
5c1546dc 1519 (void)rsignal(i, PL_csighandlerp);
85b332e2 1520#else
8aad04aa 1521 (void)rsignal(i, (Sighandler_t) SIG_IGN);
85b332e2 1522#endif
2d4fcd5e 1523 }
748a9306
LW
1524 }
1525 else if (strEQ(s,"DEFAULT") || !*s) {
136e0459 1526 if (i) {
2e34cc90 1527#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
27da23d5 1528 PL_sig_defaulting[i] = 1;
5c1546dc 1529 (void)rsignal(i, PL_csighandlerp);
2e34cc90 1530#else
8aad04aa 1531 (void)rsignal(i, (Sighandler_t) SIG_DFL);
2e34cc90 1532#endif
136e0459 1533 }
748a9306 1534 }
79072805 1535 else {
5aabfad6
PP
1536 /*
1537 * We should warn if HINT_STRICT_REFS, but without
1538 * access to a known hint bit in a known OP, we can't
1539 * tell whether HINT_STRICT_REFS is in force or not.
1540 */
46fc3d4c 1541 if (!strchr(s,':') && !strchr(s,'\''))
84335ee9
NC
1542 Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"),
1543 SV_GMAGIC);
748a9306 1544 if (i)
5c1546dc 1545 (void)rsignal(i, PL_csighandlerp);
748a9306 1546 else
46da273f 1547 *svp = SvREFCNT_inc_simple_NN(sv);
79072805 1548 }
2d4fcd5e
AJ
1549#ifdef HAS_SIGPROCMASK
1550 if(i)
1551 LEAVE;
1552#endif
1553 if(to_dec)
1554 SvREFCNT_dec(to_dec);
79072805
LW
1555 return 0;
1556}
64ca3a65 1557#endif /* !PERL_MICRO */
79072805
LW
1558
1559int
864dbfa3 1560Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
79072805 1561{
97aff369 1562 dVAR;
08aeb9f7 1563 HV* stash;
7918f24d
NC
1564
1565 PERL_ARGS_ASSERT_MAGIC_SETISA;
8772537c 1566 PERL_UNUSED_ARG(sv);
e1a479c5 1567
08aeb9f7
BB
1568 /* Bail out if destruction is going on */
1569 if(PL_dirty) return 0;
1570
89c14e2e
BB
1571 /* Skip _isaelem because _isa will handle it shortly */
1572 if (PL_delaymagic & DM_ARRAY && mg->mg_type == PERL_MAGIC_isaelem)
1573 return 0;
1574
70cd14a1
CB
1575 /* XXX Once it's possible, we need to
1576 detect that our @ISA is aliased in
1577 other stashes, and act on the stashes
1578 of all of the aliases */
1579
e1a479c5
BB
1580 /* The first case occurs via setisa,
1581 the second via setisa_elem, which
1582 calls this same magic */
08aeb9f7
BB
1583 stash = GvSTASH(
1584 SvTYPE(mg->mg_obj) == SVt_PVGV
159b6efe
NC
1585 ? (const GV *)mg->mg_obj
1586 : (const GV *)mg_find(mg->mg_obj, PERL_MAGIC_isa)->mg_obj
e1a479c5
BB
1587 );
1588
5562fa71
RGS
1589 if (stash)
1590 mro_isa_changed_in(stash);
08aeb9f7 1591
463ee0b2
LW
1592 return 0;
1593}
1594
1595int
52b45067
RD
1596Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg)
1597{
1598 dVAR;
1599 HV* stash;
1600
7918f24d
NC
1601 PERL_ARGS_ASSERT_MAGIC_CLEARISA;
1602
52b45067
RD
1603 /* Bail out if destruction is going on */
1604 if(PL_dirty) return 0;
1605
502c6561 1606 av_clear(MUTABLE_AV(sv));
52b45067
RD
1607
1608 /* XXX see comments in magic_setisa */
1609 stash = GvSTASH(
1610 SvTYPE(mg->mg_obj) == SVt_PVGV
159b6efe
NC
1611 ? (const GV *)mg->mg_obj
1612 : (const GV *)mg_find(mg->mg_obj, PERL_MAGIC_isa)->mg_obj
52b45067
RD
1613 );
1614
5562fa71
RGS
1615 if (stash)
1616 mro_isa_changed_in(stash);
52b45067
RD
1617
1618 return 0;
1619}
1620
1621int
864dbfa3 1622Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg)
463ee0b2 1623{
97aff369 1624 dVAR;
7918f24d 1625 PERL_ARGS_ASSERT_MAGIC_SETAMAGIC;
8772537c
AL
1626 PERL_UNUSED_ARG(sv);
1627 PERL_UNUSED_ARG(mg);
3280af22 1628 PL_amagic_generation++;
463ee0b2 1629
a0d0e21e
LW
1630 return 0;
1631}
463ee0b2 1632
946ec16e 1633int
864dbfa3 1634Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg)
6ff81951 1635{
85fbaab2 1636 HV * const hv = MUTABLE_HV(LvTARG(sv));
6ff81951 1637 I32 i = 0;
7918f24d
NC
1638
1639 PERL_ARGS_ASSERT_MAGIC_GETNKEYS;
8772537c 1640 PERL_UNUSED_ARG(mg);
7719e241 1641
6ff81951 1642 if (hv) {
497b47a8 1643 (void) hv_iterinit(hv);
ad64d0ec 1644 if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))
497b47a8
JH
1645 i = HvKEYS(hv);
1646 else {
1647 while (hv_iternext(hv))
1648 i++;
1649 }
6ff81951
GS
1650 }
1651
1652 sv_setiv(sv, (IV)i);
1653 return 0;
1654}
1655
1656int
864dbfa3 1657Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg)
946ec16e 1658{
7918f24d 1659 PERL_ARGS_ASSERT_MAGIC_SETNKEYS;
8772537c 1660 PERL_UNUSED_ARG(mg);
946ec16e 1661 if (LvTARG(sv)) {
85fbaab2 1662 hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv));
946ec16e
PP
1663 }
1664 return 0;
ac27b0f5 1665}
946ec16e 1666
e336de0d 1667/* caller is responsible for stack switching/cleanup */
565764a8 1668STATIC int
e1ec3a88 1669S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val)
a0d0e21e 1670{
97aff369 1671 dVAR;
a0d0e21e 1672 dSP;
463ee0b2 1673
7918f24d
NC
1674 PERL_ARGS_ASSERT_MAGIC_METHCALL;
1675
924508f0
GS
1676 PUSHMARK(SP);
1677 EXTEND(SP, n);
33c27489 1678 PUSHs(SvTIED_obj(sv, mg));
ac27b0f5 1679 if (n > 1) {
93965878 1680 if (mg->mg_ptr) {
565764a8 1681 if (mg->mg_len >= 0)
6e449a3a 1682 mPUSHp(mg->mg_ptr, mg->mg_len);
565764a8 1683 else if (mg->mg_len == HEf_SVKEY)
ad64d0ec 1684 PUSHs(MUTABLE_SV(mg->mg_ptr));
93965878 1685 }
14befaf4 1686 else if (mg->mg_type == PERL_MAGIC_tiedelem) {
6e449a3a 1687 mPUSHi(mg->mg_len);
93965878
NIS
1688 }
1689 }
1690 if (n > 2) {
1691 PUSHs(val);
88e89b8a 1692 }
463ee0b2
LW
1693 PUTBACK;
1694
864dbfa3 1695 return call_method(meth, flags);
946ec16e
PP
1696}
1697
76e3520e 1698STATIC int
e1ec3a88 1699S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth)
a0d0e21e 1700{
27da23d5 1701 dVAR; dSP;
463ee0b2 1702
7918f24d
NC
1703 PERL_ARGS_ASSERT_MAGIC_METHPACK;
1704
a0d0e21e
LW
1705 ENTER;
1706 SAVETMPS;
e788e7d3 1707 PUSHSTACKi(PERLSI_MAGIC);
463ee0b2 1708
33c27489 1709 if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) {
3280af22 1710 sv_setsv(sv, *PL_stack_sp--);
93965878 1711 }
463ee0b2 1712
d3acc0f7 1713 POPSTACK;
a0d0e21e
LW
1714 FREETMPS;
1715 LEAVE;
1716 return 0;
1717}
463ee0b2 1718
a0d0e21e 1719int
864dbfa3 1720Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg)
a0d0e21e 1721{
7918f24d
NC
1722 PERL_ARGS_ASSERT_MAGIC_GETPACK;
1723
a0d0e21e
LW
1724 if (mg->mg_ptr)
1725 mg->mg_flags |= MGf_GSKIP;
58f82c5c 1726 magic_methpack(sv,mg,"FETCH");
463ee0b2
LW
1727 return 0;
1728}
1729
1730int
864dbfa3 1731Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
e336de0d 1732{
27da23d5 1733 dVAR; dSP;
7918f24d
NC
1734
1735 PERL_ARGS_ASSERT_MAGIC_SETPACK;
1736
a60c0954 1737 ENTER;
e788e7d3 1738 PUSHSTACKi(PERLSI_MAGIC);
33c27489 1739 magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
d3acc0f7 1740 POPSTACK;
a60c0954 1741 LEAVE;
463ee0b2
LW
1742 return 0;
1743}
1744
1745int
864dbfa3 1746Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg)
463ee0b2 1747{
7918f24d
NC
1748 PERL_ARGS_ASSERT_MAGIC_CLEARPACK;
1749
a0d0e21e
LW
1750 return magic_methpack(sv,mg,"DELETE");
1751}
463ee0b2 1752
93965878
NIS
1753
1754U32
864dbfa3 1755Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
ac27b0f5 1756{
27da23d5 1757 dVAR; dSP;
22846ab4 1758 I32 retval = 0;
93965878 1759
7918f24d
NC
1760 PERL_ARGS_ASSERT_MAGIC_SIZEPACK;
1761
93965878
NIS
1762 ENTER;
1763 SAVETMPS;
e788e7d3 1764 PUSHSTACKi(PERLSI_MAGIC);
33c27489 1765 if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
3280af22 1766 sv = *PL_stack_sp--;
22846ab4
AB
1767 retval = SvIV(sv)-1;
1768 if (retval < -1)
1769 Perl_croak(aTHX_ "FETCHSIZE returned a negative value");
93965878 1770 }
d3acc0f7 1771 POPSTACK;
93965878
NIS
1772 FREETMPS;
1773 LEAVE;
22846ab4 1774 return (U32) retval;
93965878
NIS
1775}
1776
cea2e8a9
GS
1777int
1778Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
a0d0e21e 1779{
27da23d5 1780 dVAR; dSP;
463ee0b2 1781
7918f24d
NC
1782 PERL_ARGS_ASSERT_MAGIC_WIPEPACK;
1783
e336de0d 1784 ENTER;
e788e7d3 1785 PUSHSTACKi(PERLSI_MAGIC);
924508f0 1786 PUSHMARK(SP);
33c27489 1787 XPUSHs(SvTIED_obj(sv, mg));
463ee0b2 1788 PUTBACK;
864dbfa3 1789 call_method("CLEAR", G_SCALAR|G_DISCARD);
d3acc0f7 1790 POPSTACK;
a60c0954 1791 LEAVE;
a3bcc51e 1792
463ee0b2
LW
1793 return 0;
1794}
1795
1796int
864dbfa3 1797Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
463ee0b2 1798{
27da23d5 1799 dVAR; dSP;
666ea192 1800 const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
463ee0b2 1801
7918f24d
NC
1802 PERL_ARGS_ASSERT_MAGIC_NEXTPACK;
1803
463ee0b2 1804 ENTER;
a0d0e21e 1805 SAVETMPS;
e788e7d3 1806 PUSHSTACKi(PERLSI_MAGIC);
924508f0
GS
1807 PUSHMARK(SP);
1808 EXTEND(SP, 2);
33c27489 1809 PUSHs(SvTIED_obj(sv, mg));
463ee0b2
LW
1810 if (SvOK(key))
1811 PUSHs(key);
1812 PUTBACK;
1813
864dbfa3 1814 if (call_method(meth, G_SCALAR))
3280af22 1815 sv_setsv(key, *PL_stack_sp--);
463ee0b2 1816
d3acc0f7 1817 POPSTACK;
a0d0e21e
LW
1818 FREETMPS;
1819 LEAVE;
79072805
LW
1820 return 0;
1821}
1822
1823int
1146e912 1824Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg)
a0d0e21e 1825{
7918f24d
NC
1826 PERL_ARGS_ASSERT_MAGIC_EXISTSPACK;
1827
a0d0e21e 1828 return magic_methpack(sv,mg,"EXISTS");
ac27b0f5 1829}
a0d0e21e 1830
a3bcc51e
TP
1831SV *
1832Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg)
1833{
27da23d5 1834 dVAR; dSP;
5fcbf73d 1835 SV *retval;
ad64d0ec
NC
1836 SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg);
1837 HV * const pkg = SvSTASH((const SV *)SvRV(tied));
a3bcc51e 1838
7918f24d
NC
1839 PERL_ARGS_ASSERT_MAGIC_SCALARPACK;
1840
a3bcc51e
TP
1841 if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) {
1842 SV *key;
bfcb3514 1843 if (HvEITER_get(hv))
a3bcc51e
TP
1844 /* we are in an iteration so the hash cannot be empty */
1845 return &PL_sv_yes;
1846 /* no xhv_eiter so now use FIRSTKEY */
1847 key = sv_newmortal();
ad64d0ec 1848 magic_nextpack(MUTABLE_SV(hv), mg, key);
bfcb3514 1849 HvEITER_set(hv, NULL); /* need to reset iterator */
a3bcc51e
TP
1850 return SvOK(key) ? &PL_sv_yes : &PL_sv_no;
1851 }
1852
1853 /* there is a SCALAR method that we can call */
1854 ENTER;
1855 PUSHSTACKi(PERLSI_MAGIC);
1856 PUSHMARK(SP);
1857 EXTEND(SP, 1);
1858 PUSHs(tied);
1859 PUTBACK;
1860
1861 if (call_method("SCALAR", G_SCALAR))
1862 retval = *PL_stack_sp--;
5fcbf73d
AL
1863 else
1864 retval = &PL_sv_undef;
a3bcc51e
TP
1865 POPSTACK;
1866 LEAVE;
1867 return retval;
1868}
1869
a0d0e21e 1870int
864dbfa3 1871Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
79072805 1872{
97aff369 1873 dVAR;
8772537c
AL
1874 GV * const gv = PL_DBline;
1875 const I32 i = SvTRUE(sv);
1876 SV ** const svp = av_fetch(GvAV(gv),
01b8bcb7 1877 atoi(MgPV_nolen_const(mg)), FALSE);
7918f24d
NC
1878
1879 PERL_ARGS_ASSERT_MAGIC_SETDBLINE;
1880
8772537c
AL
1881 if (svp && SvIOKp(*svp)) {
1882 OP * const o = INT2PTR(OP*,SvIVX(*svp));
1883 if (o) {
1884 /* set or clear breakpoint in the relevant control op */
1885 if (i)
1886 o->op_flags |= OPf_SPECIAL;
1887 else
1888 o->op_flags &= ~OPf_SPECIAL;
1889 }
5df8de69 1890 }
79072805
LW
1891 return 0;
1892}
1893
1894int
8772537c 1895Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg)
79072805 1896{
97aff369 1897 dVAR;
502c6561 1898 AV * const obj = MUTABLE_AV(mg->mg_obj);
7918f24d
NC
1899
1900 PERL_ARGS_ASSERT_MAGIC_GETARYLEN;
1901
83bf042f 1902 if (obj) {
fc15ae8f 1903 sv_setiv(sv, AvFILL(obj) + CopARYBASE_get(PL_curcop));
83bf042f
NC
1904 } else {
1905 SvOK_off(sv);
1906 }
79072805
LW
1907 return 0;
1908}
1909
1910int
864dbfa3 1911Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg)
79072805 1912{
97aff369 1913 dVAR;
502c6561 1914 AV * const obj = MUTABLE_AV(mg->mg_obj);
7918f24d
NC
1915
1916 PERL_ARGS_ASSERT_MAGIC_SETARYLEN;
1917
83bf042f 1918 if (obj) {
fc15ae8f 1919 av_fill(obj, SvIV(sv) - CopARYBASE_get(PL_curcop));
83bf042f
NC
1920 } else {
1921 if (ckWARN(WARN_MISC))
1922 Perl_warner(aTHX_ packWARN(WARN_MISC),
1923 "Attempt to set length of freed array");
1924 }
1925 return 0;
1926}
1927
1928int
1929Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg)
1930{
97aff369 1931 dVAR;
7918f24d
NC
1932
1933 PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P;
53c1dcc0 1934 PERL_UNUSED_ARG(sv);
7918f24d 1935
94f3782b
DM
1936 /* during global destruction, mg_obj may already have been freed */
1937 if (PL_in_clean_all)
1ea47f64 1938 return 0;
94f3782b 1939
83bf042f
NC
1940 mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen);
1941
1942 if (mg) {
1943 /* arylen scalar holds a pointer back to the array, but doesn't own a
1944 reference. Hence the we (the array) are about to go away with it
1945 still pointing at us. Clear its pointer, else it would be pointing
1946 at free memory. See the comment in sv_magic about reference loops,
1947 and why it can't own a reference to us. */
1948 mg->mg_obj = 0;
1949 }
a0d0e21e
LW
1950 return 0;
1951}
1952
1953int
864dbfa3 1954Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg)
a0d0e21e 1955{
97aff369 1956 dVAR;
8772537c 1957 SV* const lsv = LvTARG(sv);
7918f24d
NC
1958
1959 PERL_ARGS_ASSERT_MAGIC_GETPOS;
3881461a 1960 PERL_UNUSED_ARG(mg);
ac27b0f5 1961
a0d0e21e 1962 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
3881461a
AL
1963 MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global);
1964 if (found && found->mg_len >= 0) {
1965 I32 i = found->mg_len;
7e2040f0 1966 if (DO_UTF8(lsv))
a0ed51b3 1967 sv_pos_b2u(lsv, &i);
fc15ae8f 1968 sv_setiv(sv, i + CopARYBASE_get(PL_curcop));
a0d0e21e
LW
1969 return 0;
1970 }
1971 }
0c34ef67 1972 SvOK_off(sv);
a0d0e21e
LW
1973 return 0;
1974}
1975
1976int
864dbfa3 1977Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg)
a0d0e21e 1978{
97aff369 1979 dVAR;
8772537c 1980 SV* const lsv = LvTARG(sv);
a0d0e21e
LW
1981 SSize_t pos;
1982 STRLEN len;
c00206c8 1983 STRLEN ulen = 0;
53d44271 1984 MAGIC* found;
a0d0e21e 1985
7918f24d 1986 PERL_ARGS_ASSERT_MAGIC_SETPOS;
3881461a 1987 PERL_UNUSED_ARG(mg);
ac27b0f5 1988
a0d0e21e 1989 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
3881461a
AL
1990 found = mg_find(lsv, PERL_MAGIC_regex_global);
1991 else
1992 found = NULL;
1993 if (!found) {
a0d0e21e
LW
1994 if (!SvOK(sv))
1995 return 0;
d83f0a82
NC
1996#ifdef PERL_OLD_COPY_ON_WRITE
1997 if (SvIsCOW(lsv))
1998 sv_force_normal_flags(lsv, 0);
1999#endif
3881461a 2000 found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob,
53d44271 2001 NULL, 0);
a0d0e21e
LW
2002 }
2003 else if (!SvOK(sv)) {
3881461a 2004 found->mg_len = -1;
a0d0e21e
LW
2005 return 0;
2006 }
2007 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
2008
fc15ae8f 2009 pos = SvIV(sv) - CopARYBASE_get(PL_curcop);
a0ed51b3 2010
7e2040f0 2011 if (DO_UTF8(lsv)) {
a0ed51b3
LW
2012 ulen = sv_len_utf8(lsv);
2013 if (ulen)
2014 len = ulen;
a0ed51b3
LW
2015 }
2016
a0d0e21e
LW
2017 if (pos < 0) {
2018 pos += len;
2019 if (pos < 0)
2020 pos = 0;
2021 }
eb160463 2022 else if (pos > (SSize_t)len)
a0d0e21e 2023 pos = len;
a0ed51b3
LW
2024
2025 if (ulen) {
2026 I32 p = pos;
2027 sv_pos_u2b(lsv, &p, 0);
2028 pos = p;
2029 }
727405f8 2030
3881461a
AL
2031 found->mg_len = pos;
2032 found->mg_flags &= ~MGf_MINMATCH;
a0d0e21e 2033
79072805
LW
2034 return 0;
2035}
2036
2037int
864dbfa3 2038Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg)
6ff81951
GS
2039{
2040 STRLEN len;
35a4481c 2041 SV * const lsv = LvTARG(sv);
b83604b4 2042 const char * const tmps = SvPV_const(lsv,len);
6ff81951
GS
2043 I32 offs = LvTARGOFF(sv);
2044 I32 rem = LvTARGLEN(sv);
7918f24d
NC
2045
2046 PERL_ARGS_ASSERT_MAGIC_GETSUBSTR;
8772537c 2047 PERL_UNUSED_ARG(mg);
6ff81951 2048
9aa983d2
JH
2049 if (SvUTF8(lsv))
2050 sv_pos_u2b(lsv, &offs, &rem);
eb160463 2051 if (offs > (I32)len)
6ff81951 2052 offs = len;
eb160463 2053 if (rem + offs > (I32)len)
6ff81951
GS
2054 rem = len - offs;
2055 sv_setpvn(sv, tmps + offs, (STRLEN)rem);
9aa983d2 2056 if (SvUTF8(lsv))
2ef4b674 2057 SvUTF8_on(sv);
6ff81951
GS
2058 return 0;
2059}
2060
2061int
864dbfa3 2062Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
79072805 2063{
97aff369 2064 dVAR;
9aa983d2 2065 STRLEN len;
5fcbf73d 2066 const char * const tmps = SvPV_const(sv, len);
dd374669 2067 SV * const lsv = LvTARG(sv);
9aa983d2
JH
2068 I32 lvoff = LvTARGOFF(sv);
2069 I32 lvlen = LvTARGLEN(sv);
7918f24d
NC
2070
2071 PERL_ARGS_ASSERT_MAGIC_SETSUBSTR;
8772537c 2072 PERL_UNUSED_ARG(mg);
075a4a2b 2073
1aa99e6b 2074 if (DO_UTF8(sv)) {
9aa983d2
JH
2075 sv_utf8_upgrade(lsv);
2076 sv_pos_u2b(lsv, &lvoff, &lvlen);
2077 sv_insert(lsv, lvoff, lvlen, tmps, len);
b76f3ce2 2078 LvTARGLEN(sv) = sv_len_utf8(sv);
9aa983d2
JH
2079 SvUTF8_on(lsv);
2080 }
9bf12eaf 2081 else if (lsv && SvUTF8(lsv)) {
5fcbf73d 2082 const char *utf8;
9aa983d2 2083 sv_pos_u2b(lsv, &lvoff, &lvlen);
b76f3ce2 2084 LvTARGLEN(sv) = len;
5fcbf73d
AL
2085 utf8 = (char*)bytes_to_utf8((U8*)tmps, &len);
2086 sv_insert(lsv, lvoff, lvlen, utf8, len);
2087 Safefree(utf8);
1aa99e6b 2088 }
b76f3ce2
GB
2089 else {
2090 sv_insert(lsv, lvoff, lvlen, tmps, len);
2091 LvTARGLEN(sv) = len;
2092 }
2093
1aa99e6b 2094
79072805
LW
2095 return 0;
2096}
2097
2098int
864dbfa3 2099Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg)
463ee0b2 2100{
97aff369 2101 dVAR;
7918f24d
NC
2102
2103 PERL_ARGS_ASSERT_MAGIC_GETTAINT;
8772537c 2104 PERL_UNUSED_ARG(sv);
7918f24d 2105
27cc343c 2106 TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1));
463ee0b2
LW
2107 return 0;
2108}
2109
2110int
864dbfa3 2111Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg)
463ee0b2 2112{
97aff369 2113 dVAR;
7918f24d
NC
2114
2115 PERL_ARGS_ASSERT_MAGIC_SETTAINT;
8772537c 2116 PERL_UNUSED_ARG(sv);
7918f24d 2117
b01e650a
DM
2118 /* update taint status */
2119 if (PL_tainted)
2120 mg->mg_len |= 1;
2121 else
2122 mg->mg_len &= ~1;
463ee0b2
LW
2123 return 0;
2124}
2125
2126int
864dbfa3 2127Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg)
6ff81951 2128{
35a4481c 2129 SV * const lsv = LvTARG(sv);
7918f24d
NC
2130
2131 PERL_ARGS_ASSERT_MAGIC_GETVEC;
8772537c 2132 PERL_UNUSED_ARG(mg);
6ff81951 2133
6136c704
AL
2134 if (lsv)
2135 sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv)));
2136 else
0c34ef67 2137 SvOK_off(sv);
6ff81951 2138
6ff81951
GS
2139 return 0;
2140}
2141
2142int
864dbfa3 2143Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg)
79072805 2144{
7918f24d 2145 PERL_ARGS_ASSERT_MAGIC_SETVEC;
8772537c 2146 PERL_UNUSED_ARG(mg);
79072805
LW
2147 do_vecset(sv); /* XXX slurp this routine */
2148 return 0;
2149}
2150
2151int
864dbfa3 2152Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg)
5f05dabc 2153{
97aff369 2154 dVAR;
a0714e2c 2155 SV *targ = NULL;
7918f24d
NC
2156
2157 PERL_ARGS_ASSERT_MAGIC_GETDEFELEM;
2158
5f05dabc 2159 if (LvTARGLEN(sv)) {
68dc0745 2160 if (mg->mg_obj) {
8772537c 2161 SV * const ahv = LvTARG(sv);
85fbaab2 2162 HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0);
6d822dc4
MS
2163 if (he)
2164 targ = HeVAL(he);
68dc0745
PP
2165 }
2166 else {
502c6561 2167 AV *const av = MUTABLE_AV(LvTARG(sv));
68dc0745
PP
2168 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
2169 targ = AvARRAY(av)[LvTARGOFF(sv)];
2170 }
46da273f 2171 if (targ && (targ != &PL_sv_undef)) {
68dc0745
PP
2172 /* somebody else defined it for us */
2173 SvREFCNT_dec(LvTARG(sv));
b37c2d43 2174 LvTARG(sv) = SvREFCNT_inc_simple_NN(targ);
68dc0745
PP
2175 LvTARGLEN(sv) = 0;
2176 SvREFCNT_dec(mg->mg_obj);
a0714e2c 2177 mg->mg_obj = NULL;
68dc0745
PP
2178 mg->mg_flags &= ~MGf_REFCOUNTED;
2179 }
5f05dabc 2180 }
71be2cbc
PP
2181 else
2182 targ = LvTARG(sv);
3280af22 2183 sv_setsv(sv, targ ? targ : &PL_sv_undef);
71be2cbc
PP
2184 return 0;
2185}
2186
2187int
864dbfa3 2188Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg)
71be2cbc 2189{
7918f24d 2190 PERL_ARGS_ASSERT_MAGIC_SETDEFELEM;
8772537c 2191 PERL_UNUSED_ARG(mg);
71be2cbc 2192 if (LvTARGLEN(sv))
68dc0745
PP
2193 vivify_defelem(sv);
2194 if (LvTARG(sv)) {
5f05dabc 2195 sv_setsv(LvTARG(sv), sv);
68dc0745
PP
2196 SvSETMAGIC(LvTARG(sv));
2197 }
5f05dabc
PP
2198 return 0;
2199}
2200
71be2cbc 2201void
864dbfa3 2202Perl_vivify_defelem(pTHX_ SV *sv)
71be2cbc 2203{
97aff369 2204 dVAR;
74e13ce4 2205 MAGIC *mg;
a0714e2c 2206 SV *value = NULL;
71be2cbc 2207
7918f24d
NC
2208 PERL_ARGS_ASSERT_VIVIFY_DEFELEM;
2209
14befaf4 2210 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem)))
71be2cbc 2211 return;
68dc0745 2212 if (mg->mg_obj) {
8772537c 2213 SV * const ahv = LvTARG(sv);
85fbaab2 2214 HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0);
6d822dc4
MS
2215 if (he)
2216 value = HeVAL(he);
3280af22 2217 if (!value || value == &PL_sv_undef)
be2597df 2218 Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj));
71be2cbc 2219 }
68dc0745 2220 else {
502c6561 2221 AV *const av = MUTABLE_AV(LvTARG(sv));
5aabfad6 2222 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
a0714e2c 2223 LvTARG(sv) = NULL; /* array can't be extended */
68dc0745 2224 else {
d4c19fe8 2225 SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE);
3280af22 2226 if (!svp || (value = *svp) == &PL_sv_undef)
cea2e8a9 2227 Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv));
68dc0745
PP
2228 }
2229 }
b37c2d43 2230 SvREFCNT_inc_simple_void(value);
68dc0745
PP
2231 SvREFCNT_dec(LvTARG(sv));
2232 LvTARG(sv) = value;
71be2cbc 2233 LvTARGLEN(sv) = 0;
68dc0745 2234 SvREFCNT_dec(mg->mg_obj);
a0714e2c 2235 mg->mg_obj = NULL;
68dc0745 2236 mg->mg_flags &= ~MGf_REFCOUNTED;
5f05dabc
PP
2237}
2238
2239int
864dbfa3 2240Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
810b8aa5 2241{
7918f24d 2242 PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS;
502c6561 2243 return Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj));
810b8aa5
GS
2244}
2245
2246int
864dbfa3 2247Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg)
93a17b20 2248{
7918f24d 2249 PERL_ARGS_ASSERT_MAGIC_SETMGLOB;
96a5add6 2250 PERL_UNUSED_CONTEXT;
565764a8 2251 mg->mg_len = -1;
c6496cc7 2252 SvSCREAM_off(sv);
93a17b20
LW
2253 return 0;
2254}
2255
2256int
864dbfa3 2257Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg)
79072805 2258{
35a4481c 2259 const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr;
79072805 2260
7918f24d
NC
2261 PERL_ARGS_ASSERT_MAGIC_SETUVAR;
2262
79072805 2263 if (uf && uf->uf_set)
24f81a43 2264 (*uf->uf_set)(aTHX_ uf->uf_index, sv);
79072805
LW
2265 return 0;
2266}
2267
c277df42 2268int
faf82a0b
AE
2269Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg)
2270{
488344d2 2271 const char type = mg->mg_type;
7918f24d
NC
2272
2273 PERL_ARGS_ASSERT_MAGIC_SETREGEXP;
2274
488344d2
NC
2275 if (type == PERL_MAGIC_qr) {
2276 } else if (type == PERL_MAGIC_bm) {
2277 SvTAIL_off(sv);
2278 SvVALID_off(sv);
2279 } else {
2280 assert(type == PERL_MAGIC_fm);
2281 SvCOMPILED_off(sv);
2282 }
2283 return sv_unmagic(sv, type);
faf82a0b
AE
2284}
2285
7a4c00b4 2286#ifdef USE_LOCALE_COLLATE
79072805 2287int
864dbfa3 2288Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg)
bbce6d69 2289{
7918f24d
NC
2290 PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM;
2291
bbce6d69 2292 /*
838b5b74 2293 * RenE<eacute> Descartes said "I think not."
bbce6d69
PP
2294 * and vanished with a faint plop.
2295 */
96a5add6 2296 PERL_UNUSED_CONTEXT;
8772537c 2297 PERL_UNUSED_ARG(sv);
7a4c00b4
PP
2298 if (mg->mg_ptr) {
2299 Safefree(mg->mg_ptr);
2300 mg->mg_ptr = NULL;
565764a8 2301 mg->mg_len = -1;
7a4c00b4 2302 }
bbce6d69
PP
2303 return 0;
2304}
7a4c00b4 2305#endif /* USE_LOCALE_COLLATE */
bbce6d69 2306
7e8c5dac
HS
2307/* Just clear the UTF-8 cache data. */
2308int
2309Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg)
2310{
7918f24d 2311 PERL_ARGS_ASSERT_MAGIC_SETUTF8;
96a5add6 2312 PERL_UNUSED_CONTEXT;
8772537c 2313 PERL_UNUSED_ARG(sv);
7e8c5dac 2314 Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */
3881461a 2315 mg->mg_ptr = NULL;
7e8c5dac
HS
2316 mg->mg_len = -1; /* The mg_len holds the len cache. */
2317 return 0;
2318}
2319
bbce6d69 2320int
864dbfa3 2321Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
79072805 2322{
97aff369 2323 dVAR;
e1ec3a88 2324 register const char *s;
2fdbfb4d
AB
2325 register I32 paren;
2326 register const REGEXP * rx;
2327 const char * const remaining = mg->mg_ptr + 1;
79072805 2328 I32 i;
8990e307 2329 STRLEN len;
2fdbfb4d 2330
7918f24d
NC
2331 PERL_ARGS_ASSERT_MAGIC_SET;
2332
79072805 2333 switch (*mg->mg_ptr) {
2fdbfb4d
AB
2334 case '\015': /* $^MATCH */
2335 if (strEQ(remaining, "ATCH"))
2336 goto do_match;
2337 case '`': /* ${^PREMATCH} caught below */
2338 do_prematch:
f1b875a0 2339 paren = RX_BUFF_IDX_PREMATCH;
2fdbfb4d
AB
2340 goto setparen;
2341 case '\'': /* ${^POSTMATCH} caught below */
2342 do_postmatch:
f1b875a0 2343 paren = RX_BUFF_IDX_POSTMATCH;
2fdbfb4d
AB
2344 goto setparen;
2345 case '&':
2346 do_match:
f1b875a0 2347 paren = RX_BUFF_IDX_FULLMATCH;
2fdbfb4d
AB
2348 goto setparen;
2349 case '1': case '2': case '3': case '4':
2350 case '5': case '6': case '7': case '8': case '9':
104a8018 2351 paren = atoi(mg->mg_ptr);
2fdbfb4d 2352 setparen:
1e05feb3 2353 if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
2fdbfb4d
AB
2354 CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv);
2355 break;
1e05feb3 2356 } else {
2fdbfb4d
AB
2357 /* Croak with a READONLY error when a numbered match var is
2358 * set without a previous pattern match. Unless it's C<local $1>
2359 */
2360 if (!PL_localizing) {
f1f66076 2361 Perl_croak(aTHX_ "%s", PL_no_modify);
2fdbfb4d
AB
2362 }
2363 }
748a9306 2364 case '\001': /* ^A */
3280af22 2365 sv_setsv(PL_bodytarget, sv);
748a9306 2366 break;
49460fe6 2367 case '\003': /* ^C */
38ab35f8 2368 PL_minus_c = (bool)SvIV(sv);
49460fe6
NIS
2369 break;
2370
79072805 2371 case '\004': /* ^D */
b4ab917c 2372#ifdef DEBUGGING
b83604b4 2373 s = SvPV_nolen_const(sv);
ddcf8bc1 2374 PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG;
79072805 2375 DEBUG_x(dump_all());
b4ab917c 2376#else
38ab35f8 2377 PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG;
b4ab917c 2378#endif
79072805 2379 break;
28f23441 2380 case '\005': /* ^E */
d0063567 2381 if (*(mg->mg_ptr+1) == '\0') {
e37778c2 2382#ifdef VMS
38ab35f8 2383 set_vaxc_errno(SvIV(sv));
e37778c2
NC
2384#else
2385# ifdef WIN32
d0063567 2386 SetLastError( SvIV(sv) );
e37778c2
NC
2387# else
2388# ifdef OS2
38ab35f8 2389 os2_setsyserrno(SvIV(sv));
e37778c2 2390# else
d0063567 2391 /* will anyone ever use this? */
38ab35f8 2392 SETERRNO(SvIV(sv), 4);
048c1ddf
IZ
2393# endif
2394# endif
22fae026 2395#endif
d0063567
DK
2396 }
2397 else if (strEQ(mg->mg_ptr+1, "NCODING")) {
2398 if (PL_encoding)
2399 SvREFCNT_dec(PL_encoding);
2400 if (SvOK(sv) || SvGMAGICAL(sv)) {
2401 PL_encoding = newSVsv(sv);
2402 }
2403 else {
a0714e2c 2404 PL_encoding = NULL;
d0063567
DK
2405 }
2406 }
2407 break;
79072805 2408 case '\006': /* ^F */
38ab35f8 2409 PL_maxsysfd = SvIV(sv);
79072805 2410 break;
a0d0e21e 2411 case '\010': /* ^H */
38ab35f8 2412 PL_hints = SvIV(sv);
a0d0e21e 2413 break;
9d116dd7 2414 case '\011': /* ^I */ /* NOT \t in EBCDIC */
43c5f42d 2415 Safefree(PL_inplace);
bd61b366 2416 PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL;
da78da6e 2417 break;
28f23441 2418 case '\017': /* ^O */
ac27b0f5 2419 if (*(mg->mg_ptr+1) == '\0') {
43c5f42d 2420 Safefree(PL_osname);
bd61b366 2421 PL_osname = NULL;
3511154c
DM
2422 if (SvOK(sv)) {
2423 TAINT_PROPER("assigning to $^O");
2e0de35c 2424 PL_osname = savesvpv(sv);
3511154c 2425 }
ac27b0f5
NIS
2426 }
2427 else if (strEQ(mg->mg_ptr, "\017PEN")) {
8b850bd5
NC
2428 STRLEN len;
2429 const char *const start = SvPV(sv, len);
b54fc2b6 2430 const char *out = (const char*)memchr(start, '\0', len);
8b850bd5
NC
2431 SV *tmp;
2432 struct refcounted_he *tmp_he;
2433
2434
2435 PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT;
2436 PL_hints
2437 |= HINT_LOCALIZE_HH | HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT;
2438
2439 /* Opening for input is more common than opening for output, so
2440 ensure that hints for input are sooner on linked list. */
59cd0e26
NC
2441 tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1,
2442 SVs_TEMP | SvUTF8(sv))
76f68e9b 2443 : newSVpvs_flags("", SVs_TEMP | SvUTF8(sv));
8b850bd5
NC
2444
2445 tmp_he
2446 = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash,
84bafc02
NC
2447 newSVpvs_flags("open>", SVs_TEMP),
2448 tmp);
8b850bd5
NC
2449
2450 /* The UTF-8 setting is carried over */
2451 sv_setpvn(tmp, start, out ? (STRLEN)(out - start) : len);
2452
11bcd5da 2453 PL_compiling.cop_hints_hash
8b850bd5 2454 = Perl_refcounted_he_new(aTHX_ tmp_he,
84bafc02
NC
2455 newSVpvs_flags("open<", SVs_TEMP),
2456 tmp);
ac27b0f5 2457 }
28f23441 2458 break;
79072805 2459 case '\020': /* ^P */
2fdbfb4d
AB
2460 if (*remaining == '\0') { /* ^P */
2461 PL_perldb = SvIV(sv);
2462 if (PL_perldb && !PL_DBsingle)
2463 init_debugger();
2464 break;
2465 } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */
2466 goto do_prematch;
2467 } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */
2468 goto do_postmatch;
2469 }
79072805 2470 case '\024': /* ^T */
88e89b8a 2471#ifdef BIG_TIME
6b88bc9c 2472 PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
88e89b8a 2473#else
38ab35f8 2474 PL_basetime = (Time_t)SvIV(sv);
88e89b8a 2475#endif
79072805 2476 break;
e07ea26a
NC
2477 case '\025': /* ^UTF8CACHE */
2478 if (strEQ(mg->mg_ptr+1, "TF8CACHE")) {
2479 PL_utf8cache = (signed char) sv_2iv(sv);
2480 }
2481 break;
fde18df1 2482 case '\027': /* ^W & $^WARNING_BITS */
4438c4b7
JH
2483 if (*(mg->mg_ptr+1) == '\0') {
2484 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
38ab35f8 2485 i = SvIV(sv);
ac27b0f5 2486 PL_dowarn = (PL_dowarn & ~G_WARN_ON)
0453d815 2487 | (i ? G_WARN_ON : G_WARN_OFF) ;
4438c4b7 2488 }
599cee73 2489 }
0a378802 2490 else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) {
4438c4b7 2491 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
d775746e
GS
2492 if (!SvPOK(sv) && PL_localizing) {
2493 sv_setpvn(sv, WARN_NONEstring, WARNsize);
d3a7d8c7 2494 PL_compiling.cop_warnings = pWARN_NONE;
d775746e
GS
2495 break;
2496 }
f4fc7782 2497 {
b5477537 2498 STRLEN len, i;
d3a7d8c7 2499 int accumulate = 0 ;
f4fc7782 2500 int any_fatals = 0 ;
b83604b4 2501 const char * const ptr = SvPV_const(sv, len) ;
f4fc7782
JH
2502 for (i = 0 ; i < len ; ++i) {
2503 accumulate |= ptr[i] ;
2504 any_fatals |= (ptr[i] & 0xAA) ;
2505 }
4243c432
NC
2506 if (!accumulate) {
2507 if (!specialWARN(PL_compiling.cop_warnings))
2508 PerlMemShared_free(PL_compiling.cop_warnings);
2509 PL_compiling.cop_warnings = pWARN_NONE;
2510 }
72dc9ed5
NC
2511 /* Yuck. I can't see how to abstract this: */
2512 else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1,
2513 WARN_ALL) && !any_fatals) {
4243c432
NC
2514 if (!specialWARN(PL_compiling.cop_warnings))
2515 PerlMemShared_free(PL_compiling.cop_warnings);
f4fc7782
JH
2516 PL_compiling.cop_warnings = pWARN_ALL;
2517 PL_dowarn |= G_WARN_ONCE ;
727405f8 2518 }
d3a7d8c7 2519 else {
72dc9ed5
NC
2520 STRLEN len;
2521 const char *const p = SvPV_const(sv, len);
2522
2523 PL_compiling.cop_warnings
8ee4cf24 2524 = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings,
72dc9ed5
NC
2525 p, len);
2526
d3a7d8c7
GS
2527 if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE))
2528 PL_dowarn |= G_WARN_ONCE ;
2529 }
f4fc7782 2530
d3a7d8c7 2531 }
4438c4b7 2532 }
971a9dd3 2533 }
79072805
LW
2534 break;
2535 case '.':
3280af22
NIS
2536 if (PL_localizing) {
2537 if (PL_localizing == 1)
7766f137 2538 SAVESPTR(PL_last_in_gv);
748a9306 2539 }
3280af22 2540 else if (SvOK(sv) && GvIO(PL_last_in_gv))
632db599 2541 IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv);
79072805
LW
2542 break;
2543 case '^':
3280af22 2544 Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
e1ec3a88 2545 s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv);
f776e3cd 2546 IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO);
79072805
LW
2547 break;
2548 case '~':
3280af22 2549 Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
e1ec3a88 2550 s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv);
f776e3cd 2551 IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO);
79072805
LW
2552 break;
2553 case '=':
38ab35f8 2554 IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv));
79072805
LW
2555 break;
2556 case '-':
38ab35f8 2557 IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv));
3280af22
NIS
2558 if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
2559 IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
79072805
LW
2560 break;
2561 case '%':
38ab35f8 2562 IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv));
79072805
LW
2563 break;
2564 case '|':
4b65379b 2565 {
8772537c 2566 IO * const io = GvIOp(PL_defoutgv);
720f287d
AB
2567 if(!io)
2568 break;
38ab35f8 2569 if ((SvIV(sv)) == 0)
4b65379b
CS
2570 IoFLAGS(io) &= ~IOf_FLUSH;
2571 else {
2572 if (!(IoFLAGS(io) & IOf_FLUSH)) {
2573 PerlIO *ofp = IoOFP(io);
2574 if (ofp)
2575 (void)PerlIO_flush(ofp);
2576 IoFLAGS(io) |= IOf_FLUSH;
2577 }
2578 }
79072805
LW
2579 }
2580 break;
79072805 2581 case '/':
3280af22 2582 SvREFCNT_dec(PL_rs);
8bfdd7d9 2583 PL_rs = newSVsv(sv);
79072805
LW
2584 break;
2585 case '\\':
7889fe52
NIS
2586 if (PL_ors_sv)
2587 SvREFCNT_dec(PL_ors_sv);
009c130f 2588 if (SvOK(sv) || SvGMAGICAL(sv)) {
7889fe52 2589 PL_ors_sv = newSVsv(sv);
009c130f 2590 }
e3c19b7b 2591 else {
a0714e2c 2592 PL_ors_sv = NULL;
e3c19b7b 2593 }
79072805 2594 break;
79072805 2595 case '[':
38ab35f8 2596 CopARYBASE_set(&PL_compiling, SvIV(sv));
79072805
LW
2597 break;
2598 case '?':
ff0cee69 2599#ifdef COMPLEX_STATUS
6b88bc9c
GS
2600 if (PL_localizing == 2) {
2601 PL_statusvalue = LvTARGOFF(sv);
2602 PL_statusvalue_vms = LvTARGLEN(sv);
ff0cee69
PP
2603 }
2604 else
2605#endif
2606#ifdef VMSISH_STATUS
2607 if (VMSISH_STATUS)
fb38d079 2608 STATUS_NATIVE_CHILD_SET((U32)SvIV(sv));
ff0cee69
PP
2609 else
2610#endif
38ab35f8 2611 STATUS_UNIX_EXIT_SET(SvIV(sv));
79072805
LW
2612 break;
2613 case '!':
93189314
JH
2614 {
2615#ifdef VMS
2616# define PERL_VMS_BANG vaxc$errno
2617#else
2618# define PERL_VMS_BANG 0
2619#endif
91487cfc 2620 SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
93189314
JH
2621 (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG);
2622 }
79072805
LW
2623 break;
2624 case '<':
38ab35f8 2625 PL_uid = SvIV(sv);
3280af22
NIS
2626 if (PL_delaymagic) {
2627 PL_delaymagic |= DM_RUID;
79072805
LW
2628 break; /* don't do magic till later */
2629 }
2630#ifdef HAS_SETRUID
b28d0864 2631 (void)setruid((Uid_t)PL_uid);
79072805
LW
2632#else
2633#ifdef HAS_SETREUID
3280af22 2634 (void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
748a9306 2635#else
85e6fe83 2636#ifdef HAS_SETRESUID
b28d0864 2637 (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
79072805 2638#else
75870ed3 2639 if (PL_uid == PL_euid) { /* special case $< = $> */
2640#ifdef PERL_DARWIN
2641 /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */
2642 if (PL_uid != 0 && PerlProc_getuid() == 0)
2643 (void)PerlProc_setuid(0);
2644#endif
b28d0864 2645 (void)PerlProc_setuid(PL_uid);
75870ed3 2646 } else {
d8eceb89 2647 PL_uid = PerlProc_getuid();
cea2e8a9 2648 Perl_croak(aTHX_ "setruid() not implemented");
a0d0e21e 2649 }
79072805
LW
2650#endif
2651#endif
85e6fe83 2652#endif
d8eceb89 2653 PL_uid = PerlProc_getuid();
3280af22 2654 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
79072805
LW
2655 break;
2656 case '>':
38ab35f8 2657 PL_euid = SvIV(sv);
3280af22
NIS
2658 if (PL_delaymagic) {
2659 PL_delaymagic |= DM_EUID;
79072805
LW
2660 break; /* don't do magic till later */
2661 }
2662#ifdef HAS_SETEUID
3280af22 2663 (void)seteuid((Uid_t)PL_euid);
79072805
LW
2664#else
2665#ifdef HAS_SETREUID
b28d0864 2666 (void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
85e6fe83
LW
2667#else
2668#ifdef HAS_SETRESUID
6b88bc9c 2669 (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
79072805 2670#else
b28d0864
NIS
2671 if (PL_euid == PL_uid) /* special case $> = $< */
2672 PerlProc_setuid(PL_euid);
a0d0e21e 2673 else {
e8ee3774 2674 PL_euid = PerlProc_geteuid();
cea2e8a9 2675 Perl_croak(aTHX_ "seteuid() not implemented");
a0d0e21e 2676 }
79072805
LW
2677#endif
2678#endif
85e6fe83 2679#endif
d8eceb89 2680 PL_euid = PerlProc_geteuid();
3280af22 2681 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
79072805
LW
2682 break;
2683 case '(':
38ab35f8 2684 PL_gid = SvIV(sv);
3280af22
NIS
2685 if (PL_delaymagic) {
2686 PL_delaymagic |= DM_RGID;
79072805
LW
2687 break; /* don't do magic till later */
2688 }
2689#ifdef HAS_SETRGID
b28d0864 2690 (void)setrgid((Gid_t)PL_gid);
79072805
LW
2691#else
2692#ifdef HAS_SETREGID
3280af22 2693 (void)setregid((Gid_t)PL_gid, (Gid_t)-1);
85e6fe83
LW
2694#else
2695#ifdef HAS_SETRESGID
b28d0864 2696 (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
79072805 2697#else
b28d0864
NIS
2698 if (PL_gid == PL_egid) /* special case $( = $) */
2699 (void)PerlProc_setgid(PL_gid);
748a9306 2700 else {
d8eceb89 2701 PL_gid = PerlProc_getgid();
cea2e8a9 2702 Perl_croak(aTHX_ "setrgid() not implemented");
748a9306 2703 }
79072805
LW
2704#endif
2705#endif
85e6fe83 2706#endif
d8eceb89 2707 PL_gid = PerlProc_getgid();
3280af22 2708 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
79072805
LW
2709 break;
2710 case ')':
5cd24f17
PP
2711#ifdef HAS_SETGROUPS
2712 {
b83604b4 2713 const char *p = SvPV_const(sv, len);
757f63d8
SP
2714 Groups_t *gary = NULL;
2715
2716 while (isSPACE(*p))
2717 ++p;
2718 PL_egid = Atol(p);
2719 for (i = 0; i < NGROUPS; ++i) {
2720 while (*p && !isSPACE(*p))
2721 ++p;
2722 while (isSPACE(*p))
2723 ++p;
2724 if (!*p)
2725 break;
2726 if(!gary)
2727 Newx(gary, i + 1, Groups_t);
2728 else
2729 Renew(gary, i + 1, Groups_t);
2730 gary[i] = Atol(p);
2731 }
2732 if (i)
2733 (void)setgroups(i, gary);
f5a63d97 2734 Safefree(gary);
5cd24f17
PP
2735 }
2736#else /* HAS_SETGROUPS */
38ab35f8 2737 PL_egid = SvIV(sv);
5cd24f17 2738#endif /* HAS_SETGROUPS */
3280af22
NIS
2739 if (PL_delaymagic) {
2740 PL_delaymagic |= DM_EGID;
79072805
LW
2741 break; /* don't do magic till later */
2742 }
2743#ifdef HAS_SETEGID
3280af22 2744 (void)setegid((Gid_t)PL_egid);
79072805
LW
2745#else
2746#ifdef HAS_SETREGID
b28d0864 2747 (void)setregid((Gid_t)-1, (Gid_t)PL_egid);
85e6fe83
LW
2748#else
2749#ifdef HAS_SETRESGID
b28d0864 2750 (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
79072805 2751#else
b28d0864
NIS
2752 if (PL_egid == PL_gid) /* special case $) = $( */
2753 (void)PerlProc_setgid(PL_egid);
748a9306 2754 else {
d8eceb89 2755 PL_egid = PerlProc_getegid();
cea2e8a9 2756 Perl_croak(aTHX_ "setegid() not implemented");
748a9306 2757 }
79072805
LW
2758#endif
2759#endif
85e6fe83 2760#endif
d8eceb89 2761 PL_egid = PerlProc_getegid();
3280af22 2762 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
79072805
LW
2763 break;
2764 case ':':
2d8e6c8d 2765 PL_chopset = SvPV_force(sv,len);
79072805
LW
2766 break;
2767 case '0':
e2975953 2768 LOCK_DOLLARZERO_MUTEX;
4bc88a62
PS
2769#ifdef HAS_SETPROCTITLE
2770 /* The BSDs don't show the argv[] in ps(1) output, they
2771 * show a string from the process struct and provide
2772 * the setproctitle() routine to manipulate that. */
a2722ac9 2773 if (PL_origalen != 1) {
b83604b4 2774 s = SvPV_const(sv, len);
98b76f99 2775# if __FreeBSD_version > 410001
9aad2c0e 2776 /* The leading "-" removes the "perl: " prefix,
4bc88a62
PS
2777 * but not the "(perl) suffix from the ps(1)
2778 * output, because that's what ps(1) shows if the
2779 * argv[] is modified. */
6f2ad931 2780 setproctitle("-%s", s);
9aad2c0e 2781# else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */
4bc88a62
PS
2782 /* This doesn't really work if you assume that
2783 * $0 = 'foobar'; will wipe out 'perl' from the $0
2784 * because in ps(1) output the result will be like
2785 * sprintf("perl: %s (perl)", s)
2786 * I guess this is a security feature:
2787 * one (a user process) cannot get rid of the original name.
2788 * --jhi */
2789 setproctitle("%s", s);
2790# endif
2791 }
9d3968b2 2792#elif defined(__hpux) && defined(PSTAT_SETCMD)
a2722ac9 2793 if (PL_origalen != 1) {
17aa7f3d 2794 union pstun un;
b83604b4 2795 s = SvPV_const(sv, len);
6867be6d 2796 un.pst_command = (char *)s;
17aa7f3d
JH
2797 pstat(PSTAT_SETCMD, un, len, 0, 0);
2798 }
9d3968b2 2799#else
2d2af554
GA
2800 if (PL_origalen > 1) {
2801 /* PL_origalen is set in perl_parse(). */
2802 s = SvPV_force(sv,len);
2803 if (len >= (STRLEN)PL_origalen-1) {
2804 /* Longer than original, will be truncated. We assume that
2805 * PL_origalen bytes are available. */
2806 Copy(s, PL_origargv[0], PL_origalen-1, char);
2807 }
2808 else {
2809 /* Shorter than original, will be padded. */
235ac35d 2810#ifdef PERL_DARWIN
60777a0d
JH
2811 /* Special case for Mac OS X: see [perl #38868] */
2812 const int pad = 0;
235ac35d 2813#else
8a89a4f1
MB
2814 /* Is the space counterintuitive? Yes.
2815 * (You were expecting \0?)
2816 * Does it work? Seems to. (In Linux 2.4.20 at least.)
2817 * --jhi */
60777a0d 2818 const int pad = ' ';
235ac35d 2819#endif
60777a0d
JH
2820 Copy(s, PL_origargv[0], len, char);
2821 PL_origargv[0][len] = 0;
2822 memset(PL_origargv[0] + len + 1,
2823 pad, PL_origalen - len - 1);
2d2af554
GA
2824 }
2825 PL_origargv[0][PL_origalen-1] = 0;
2826 for (i = 1; i < PL_origargc; i++)
2827 PL_origargv[i] = 0;
79072805 2828 }
9d3968b2 2829#endif
e2975953 2830 UNLOCK_DOLLARZERO_MUTEX;
79072805
LW
2831 break;
2832 }
2833 return 0;
2834}
2835
2836I32
35a4481c 2837Perl_whichsig(pTHX_ const char *sig)
79072805 2838{
aadb217d 2839 register char* const* sigv;
7918f24d
NC
2840
2841 PERL_ARGS_ASSERT_WHICHSIG;
96a5add6 2842 PERL_UNUSED_CONTEXT;
79072805 2843
aadb217d 2844 for (sigv = (char* const*)PL_sig_name; *sigv; sigv++)
79072805 2845 if (strEQ(sig,*sigv))
aadb217d 2846 return PL_sig_num[sigv - (char* const*)PL_sig_name];
79072805
LW
2847#ifdef SIGCLD
2848 if (strEQ(sig,"CHLD"))
2849 return SIGCLD;
2850#endif
2851#ifdef SIGCHLD
2852 if (strEQ(sig,"CLD"))
2853 return SIGCHLD;
2854#endif
7f1236c0 2855 return -1;
79072805
LW
2856}
2857
ecfc5424 2858Signal_t
1e82f5a6 2859#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
b6455c53 2860Perl_sighandler(int sig, siginfo_t *sip, void *uap PERL_UNUSED_DECL)
1e82f5a6
SH
2861#else
2862Perl_sighandler(int sig)
2863#endif
79072805 2864{
1018e26f
NIS
2865#ifdef PERL_GET_SIG_CONTEXT
2866 dTHXa(PERL_GET_SIG_CONTEXT);
71d280e3 2867#else
cea2e8a9 2868 dTHX;
71d280e3 2869#endif
79072805 2870 dSP;
a0714e2c
SS
2871 GV *gv = NULL;
2872 SV *sv = NULL;
8772537c 2873 SV * const tSv = PL_Sv;
601f1833 2874 CV *cv = NULL;
533c011a 2875 OP *myop = PL_op;
84902520 2876 U32 flags = 0;
8772537c 2877 XPV * const tXpv = PL_Xpv;
71d280e3 2878
3280af22 2879 if (PL_savestack_ix + 15 <= PL_savestack_max)
84902520 2880 flags |= 1;
3280af22 2881 if (PL_markstack_ptr < PL_markstack_max - 2)
84902520 2882 flags |= 4;
3280af22 2883 if (PL_scopestack_ix < PL_scopestack_max - 3)
84902520
TB
2884 flags |= 16;
2885
727405f8 2886 if (!PL_psig_ptr[sig]) {
99ef548b 2887 PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n",
727405f8
NIS
2888 PL_sig_name[sig]);
2889 exit(sig);
2890 }
ff0cee69 2891
84902520
TB
2892 /* Max number of items pushed there is 3*n or 4. We cannot fix
2893 infinity, so we fix 4 (in fact 5): */
2894 if (flags & 1) {
3280af22 2895 PL_savestack_ix += 5; /* Protect save in progress. */
8772537c 2896 SAVEDESTRUCTOR_X(S_unwind_handler_stack, (void*)&flags);
84902520 2897 }
ac27b0f5 2898 if (flags & 4)
3280af22 2899 PL_markstack_ptr++; /* Protect mark. */
84902520 2900 if (flags & 16)
3280af22 2901 PL_scopestack_ix += 1;
84902520 2902 /* sv_2cv is too complicated, try a simpler variant first: */
ea726b52 2903 if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig])))
8772537c
AL
2904 || SvTYPE(cv) != SVt_PVCV) {
2905 HV *st;
f2c0649b 2906 cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD);
8772537c 2907 }
84902520 2908
a0d0e21e 2909 if (!cv || !CvROOT(cv)) {
599cee73 2910 if (ckWARN(WARN_SIGNAL))
9014280d 2911 Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n",
22c35a8c 2912 PL_sig_name[sig], (gv ? GvENAME(gv)
00d579c5
GS
2913 : ((cv && CvGV(cv))
2914 ? GvENAME(CvGV(cv))
2915 : "__ANON__")));
2916 goto cleanup;
79072805
LW
2917 }
2918
22c35a8c 2919 if(PL_psig_name[sig]) {
b37c2d43 2920 sv = SvREFCNT_inc_NN(PL_psig_name[sig]);
84902520 2921 flags |= 64;
df3728a2 2922#if !defined(PERL_IMPLICIT_CONTEXT)
27da23d5 2923 PL_sig_sv = sv;
df3728a2 2924#endif
84902520 2925 } else {
ff0cee69 2926 sv = sv_newmortal();
22c35a8c 2927 sv_setpv(sv,PL_sig_name[sig]);
88e89b8a 2928 }
e336de0d 2929
e788e7d3 2930 PUSHSTACKi(PERLSI_SIGNAL);
924508f0 2931 PUSHMARK(SP);
79072805 2932 PUSHs(sv);
8aad04aa
JH
2933#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
2934 {
2935 struct sigaction oact;
2936
2937 if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) {
8aad04aa
JH
2938 if (sip) {
2939 HV *sih = newHV();
ad64d0ec 2940 SV *rv = newRV_noinc(MUTABLE_SV(sih));
8aad04aa
JH
2941 /* The siginfo fields signo, code, errno, pid, uid,
2942 * addr, status, and band are defined by POSIX/SUSv3. */
85771703
NC
2943 (void)hv_stores(sih, "signo", newSViv(sip->si_signo));
2944 (void)hv_stores(sih, "code", newSViv(sip->si_code));
79dec0f4 2945#if 0 /* XXX TODO: Configure scan for the existence of these, but even that does not help if the SA_SIGINFO is not implemented according to the spec. */
85771703
NC
2946 hv_stores(sih, "errno", newSViv(sip->si_errno));
2947 hv_stores(sih, "status", newSViv(sip->si_status));
2948 hv_stores(sih, "uid", newSViv(sip->si_uid));
2949 hv_stores(sih, "pid", newSViv(sip->si_pid));
2950 hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr)));
2951 hv_stores(sih, "band", newSViv(sip->si_band));
79dec0f4 2952#endif
8aad04aa 2953 EXTEND(SP, 2);
ad64d0ec 2954 PUSHs(rv);
22f1178f 2955 mPUSHp((char *)sip, sizeof(*sip));
8aad04aa 2956 }
b4552a27 2957
8aad04aa
JH
2958 }
2959 }
2960#endif
79072805 2961 PUTBACK;
a0d0e21e 2962
ad64d0ec 2963 call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL);
79072805 2964
d3acc0f7 2965 POPSTACK;
1b266415 2966 if (SvTRUE(ERRSV)) {
1d615522 2967#ifndef PERL_MICRO
983dbef6 2968#ifdef HAS_SIGPROCMASK
1b266415
NIS
2969 /* Handler "died", for example to get out of a restart-able read().
2970 * Before we re-do that on its behalf re-enable the signal which was
2971 * blocked by the system when we entered.
2972 */
2973 sigset_t set;
2974 sigemptyset(&set);
2975 sigaddset(&set,sig);
2976 sigprocmask(SIG_UNBLOCK, &set, NULL);
2977#else
2978 /* Not clear if this will work */
2979 (void)rsignal(sig, SIG_IGN);
5c1546dc 2980 (void)rsignal(sig, PL_csighandlerp);
1b266415 2981#endif
1d615522 2982#endif /* !PERL_MICRO */
bd61b366 2983 Perl_die(aTHX_ NULL);
1b266415 2984 }
00d579c5 2985cleanup:
84902520 2986 if (flags & 1)
3280af22 2987 PL_savestack_ix -= 8; /* Unprotect save in progress. */
ac27b0f5 2988 if (flags & 4)
3280af22 2989 PL_markstack_ptr--;
84902520 2990 if (flags & 16)
3280af22 2991 PL_scopestack_ix -= 1;
84902520
TB
2992 if (flags & 64)
2993 SvREFCNT_dec(sv);
533c011a 2994 PL_op = myop; /* Apparently not needed... */
ac27b0f5 2995
3280af22
NIS
2996 PL_Sv = tSv; /* Restore global temporaries. */
2997 PL_Xpv = tXpv;
53bb94e2 2998 return;
79072805 2999}
4e35701f
NIS
3000
3001
51371543 3002static void
8772537c 3003S_restore_magic(pTHX_ const void *p)
51371543 3004{
97aff369 3005 dVAR;
8772537c
AL
3006 MGS* const mgs = SSPTR(PTR2IV(p), MGS*);
3007 SV* const sv = mgs->mgs_sv;
51371543
GS
3008
3009 if (!sv)
3010 return;
3011
3012 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3013 {
f8c7b90f 3014#ifdef PERL_OLD_COPY_ON_WRITE
f9701176
NC
3015 /* While magic was saved (and off) sv_setsv may well have seen
3016 this SV as a prime candidate for COW. */
3017 if (SvIsCOW(sv))
e424a81e 3018 sv_force_normal_flags(sv, 0);
f9701176
NC
3019#endif
3020
51371543
GS
3021 if (mgs->mgs_flags)
3022 SvFLAGS(sv) |= mgs->mgs_flags;
3023 else
3024 mg_magical(sv);
2b77b520
YST
3025 if (SvGMAGICAL(sv)) {
3026 /* downgrade public flags to private,
3027 and discard any other private flags */
3028
10edeb5d
JH
3029 const U32 pubflags = SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK);
3030 if (pubflags) {
3031 SvFLAGS(sv) &= ~( pubflags | (SVp_IOK|SVp_NOK|SVp_POK) );
3032 SvFLAGS(sv) |= ( pubflags << PRIVSHIFT );
2b77b520
YST
3033 }
3034 }
51371543
GS
3035 }
3036
3037 mgs->mgs_sv = NULL; /* mark the MGS structure as restored */
3038
3039 /* If we're still on top of the stack, pop us off. (That condition
3040 * will be satisfied if restore_magic was called explicitly, but *not*
3041 * if it's being called via leave_scope.)
3042 * The reason for doing this is that otherwise, things like sv_2cv()
3043 * may leave alloc gunk on the savestack, and some code
3044 * (e.g. sighandler) doesn't expect that...
3045 */
3046 if (PL_savestack_ix == mgs->mgs_ss_ix)
3047 {
3048 I32 popval = SSPOPINT;
c76ac1ee 3049 assert(popval == SAVEt_DESTRUCTOR_X);
51371543
GS
3050 PL_savestack_ix -= 2;
3051 popval = SSPOPINT;
3052 assert(popval == SAVEt_ALLOC);
3053 popval = SSPOPINT;
3054 PL_savestack_ix -= popval;
3055 }
3056
3057}
3058
3059static void
8772537c 3060S_unwind_handler_stack(pTHX_ const void *p)
51371543 3061{
27da23d5 3062 dVAR;
e1ec3a88 3063 const U32 flags = *(const U32*)p;
51371543 3064
7918f24d
NC
3065 PERL_ARGS_ASSERT_UNWIND_HANDLER_STACK;
3066
51371543
GS
3067 if (flags & 1)
3068 PL_savestack_ix -= 5; /* Unprotect save in progress. */
df3728a2 3069#if !defined(PERL_IMPLICIT_CONTEXT)
51371543 3070 if (flags & 64)
27da23d5 3071 SvREFCNT_dec(PL_sig_sv);
df3728a2 3072#endif
51371543 3073}
1018e26f 3074
66610fdd 3075/*
b3ca2e83
NC
3076=for apidoc magic_sethint
3077
3078Triggered by a store to %^H, records the key/value pair to
c28fe1ec
NC
3079C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing
3080anything that would need a deep copy. Maybe we should warn if we find a
3081reference.
b3ca2e83
NC
3082
3083=cut
3084*/
3085int
3086Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg)
3087{
3088 dVAR;
ad64d0ec 3089 SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr)
59cd0e26 3090 : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP);
b3ca2e83 3091
7918f24d
NC
3092 PERL_ARGS_ASSERT_MAGIC_SETHINT;
3093
e6e3e454
NC
3094 /* mg->mg_obj isn't being used. If needed, it would be possible to store
3095 an alternative leaf in there, with PL_compiling.cop_hints being used if
3096 it's NULL. If needed for threads, the alternative could lock a mutex,
3097 or take other more complex action. */
3098
5b9c0671
NC
3099 /* Something changed in %^H, so it will need to be restored on scope exit.
3100 Doing this here saves a lot of doing it manually in perl code (and
3101 forgetting to do it, and consequent subtle errors. */
3102 PL_hints |= HINT_LOCALIZE_HH;
c28fe1ec 3103 PL_compiling.cop_hints_hash
fc92a12d 3104 = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, key, sv);
b3ca2e83
NC
3105 return 0;
3106}
3107
3108/*
f175cff5 3109=for apidoc magic_clearhint
b3ca2e83 3110
c28fe1ec
NC
3111Triggered by a delete from %^H, records the key to
3112C<PL_compiling.cop_hints_hash>.
b3ca2e83
NC
3113
3114=cut
3115*/
3116int
3117Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg)
3118{
3119 dVAR;
7918f24d
NC
3120
3121 PERL_ARGS_ASSERT_MAGIC_CLEARHINT;
f5a63d97
AL
3122 PERL_UNUSED_ARG(sv);
3123
b3ca2e83
NC
3124 assert(mg->mg_len == HEf_SVKEY);
3125
b3f24c00
MHM
3126 PERL_UNUSED_ARG(sv);
3127
5b9c0671 3128 PL_hints |= HINT_LOCALIZE_HH;
c28fe1ec
NC
3129 PL_compiling.cop_hints_hash
3130 = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash,
ad64d0ec 3131 MUTABLE_SV(mg->mg_ptr), &PL_sv_placeholder);
b3ca2e83
NC
3132 return 0;
3133}
3134
3135/*
66610fdd
RGS
3136 * Local variables:
3137 * c-indentation-style: bsd
3138 * c-basic-offset: 4
3139 * indent-tabs-mode: t
3140 * End:
3141 *
37442d52
RGS
3142 * ex: set ts=8 sts=4 sw=4 noet:
3143 */