Commit | Line | Data |
a0d0e21e |
1 | /* mg.c |
79072805 |
2 | * |
4bb101f2 |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
cbdf9ef8 |
4 | * 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and others |
79072805 |
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 |
9 | */ |
10 | |
11 | /* |
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." |
79072805 |
14 | */ |
15 | |
ccfc67b7 |
16 | /* |
17 | =head1 Magical Functions |
166f8a29 |
18 | |
19 | "Magic" is special data attached to SV structures in order to give them |
20 | "magical" properties. When any Perl code tries to read from, or assign to, |
21 | an SV marked as magical, it calls the 'get' or 'set' function associated |
22 | with that SV's magic. A get is called prior to reading an SV, in order to |
ddfa107c |
23 | give it a chance to update its internal value (get on $. writes the line |
166f8a29 |
24 | number of the last read filehandle into to the SV's IV slot), while |
25 | set is called after an SV has been written to, in order to allow it to make |
ddfa107c |
26 | use of its changed value (set on $/ copies the SV's new value to the |
166f8a29 |
27 | PL_rs global variable). |
28 | |
29 | Magic is implemented as a linked list of MAGIC structures attached to the |
30 | SV. Each MAGIC struct holds the type of the magic, a pointer to an array |
31 | of functions that implement the get(), set(), length() etc functions, |
32 | plus space for some flags and pointers. For example, a tied variable has |
33 | a MAGIC structure that contains a pointer to the object associated with the |
34 | tie. |
35 | |
ccfc67b7 |
36 | */ |
37 | |
79072805 |
38 | #include "EXTERN.h" |
864dbfa3 |
39 | #define PERL_IN_MG_C |
79072805 |
40 | #include "perl.h" |
41 | |
5cd24f17 |
42 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
b7953727 |
43 | # ifdef I_GRP |
44 | # include <grp.h> |
45 | # endif |
188ea221 |
46 | #endif |
47 | |
757f63d8 |
48 | #if defined(HAS_SETGROUPS) |
49 | # ifndef NGROUPS |
50 | # define NGROUPS 32 |
51 | # endif |
52 | #endif |
53 | |
17aa7f3d |
54 | #ifdef __hpux |
55 | # include <sys/pstat.h> |
56 | #endif |
57 | |
8aad04aa |
58 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
59 | Signal_t Perl_csighandler(int sig, ...); |
60 | #else |
e69880a5 |
61 | Signal_t Perl_csighandler(int sig); |
8aad04aa |
62 | #endif |
e69880a5 |
63 | |
9cffb111 |
64 | #ifdef __Lynx__ |
65 | /* Missing protos on LynxOS */ |
66 | void setruid(uid_t id); |
67 | void seteuid(uid_t id); |
68 | void setrgid(uid_t id); |
69 | void setegid(uid_t id); |
70 | #endif |
71 | |
c07a80fd |
72 | /* |
73 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. |
74 | */ |
75 | |
76 | struct magic_state { |
77 | SV* mgs_sv; |
78 | U32 mgs_flags; |
455ece5e |
79 | I32 mgs_ss_ix; |
c07a80fd |
80 | }; |
455ece5e |
81 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e |
82 | |
83 | STATIC void |
8fb26106 |
84 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd |
85 | { |
455ece5e |
86 | MGS* mgs; |
c07a80fd |
87 | assert(SvMAGICAL(sv)); |
f8c7b90f |
88 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d |
89 | /* Turning READONLY off for a copy-on-write scalar is a bad idea. */ |
90 | if (SvIsCOW(sv)) |
9a265e59 |
91 | sv_force_normal_flags(sv, 0); |
765f542d |
92 | #endif |
c07a80fd |
93 | |
8772537c |
94 | SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e |
95 | |
96 | mgs = SSPTR(mgs_ix, MGS*); |
c07a80fd |
97 | mgs->mgs_sv = sv; |
98 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); |
455ece5e |
99 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd |
100 | |
101 | SvMAGICAL_off(sv); |
102 | SvREADONLY_off(sv); |
06759ea0 |
103 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
c07a80fd |
104 | } |
105 | |
954c1994 |
106 | /* |
107 | =for apidoc mg_magical |
108 | |
109 | Turns on the magical status of an SV. See C<sv_magic>. |
110 | |
111 | =cut |
112 | */ |
113 | |
8990e307 |
114 | void |
864dbfa3 |
115 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 |
116 | { |
e1ec3a88 |
117 | const MAGIC* mg; |
8990e307 |
118 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c |
119 | const MGVTBL* const vtbl = mg->mg_virtual; |
8990e307 |
120 | if (vtbl) { |
2b260de0 |
121 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 |
122 | SvGMAGICAL_on(sv); |
123 | if (vtbl->svt_set) |
124 | SvSMAGICAL_on(sv); |
2b260de0 |
125 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) |
8990e307 |
126 | SvRMAGICAL_on(sv); |
127 | } |
128 | } |
129 | } |
130 | |
954c1994 |
131 | /* |
132 | =for apidoc mg_get |
133 | |
134 | Do magic after a value is retrieved from the SV. See C<sv_magic>. |
135 | |
136 | =cut |
137 | */ |
138 | |
79072805 |
139 | int |
864dbfa3 |
140 | Perl_mg_get(pTHX_ SV *sv) |
79072805 |
141 | { |
35a4481c |
142 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
fe2774ed |
143 | const bool was_temp = (bool)SvTEMP(sv); |
0723351e |
144 | int have_new = 0; |
ff76feab |
145 | MAGIC *newmg, *head, *cur, *mg; |
20135930 |
146 | /* guard against sv having being freed midway by holding a private |
6683b158 |
147 | reference. */ |
148 | |
149 | /* sv_2mortal has this side effect of turning on the TEMP flag, which can |
150 | cause the SV's buffer to get stolen (and maybe other stuff). |
151 | So restore it. |
152 | */ |
153 | sv_2mortal(SvREFCNT_inc(sv)); |
154 | if (!was_temp) { |
155 | SvTEMP_off(sv); |
156 | } |
157 | |
455ece5e |
158 | save_magic(mgs_ix, sv); |
463ee0b2 |
159 | |
ff76feab |
160 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
161 | list of magic. svt_get() may delete the current entry, add new |
162 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ |
163 | |
164 | newmg = cur = head = mg = SvMAGIC(sv); |
165 | while (mg) { |
35a4481c |
166 | const MGVTBL * const vtbl = mg->mg_virtual; |
ff76feab |
167 | |
2b260de0 |
168 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
316ad4fe |
169 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
b77f7d40 |
170 | |
58f82c5c |
171 | /* guard against magic having been deleted - eg FETCH calling |
172 | * untie */ |
173 | if (!SvMAGIC(sv)) |
174 | break; |
b77f7d40 |
175 | |
ff76feab |
176 | /* Don't restore the flags for this entry if it was deleted. */ |
177 | if (mg->mg_flags & MGf_GSKIP) |
178 | (SSPTR(mgs_ix, MGS *))->mgs_flags = 0; |
a0d0e21e |
179 | } |
ff76feab |
180 | |
181 | mg = mg->mg_moremagic; |
182 | |
0723351e |
183 | if (have_new) { |
ff76feab |
184 | /* Have we finished with the new entries we saw? Start again |
185 | where we left off (unless there are more new entries). */ |
186 | if (mg == head) { |
0723351e |
187 | have_new = 0; |
ff76feab |
188 | mg = cur; |
189 | head = newmg; |
190 | } |
191 | } |
192 | |
193 | /* Were any new entries added? */ |
0723351e |
194 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
195 | have_new = 1; |
ff76feab |
196 | cur = mg; |
197 | mg = newmg; |
760ac839 |
198 | } |
79072805 |
199 | } |
463ee0b2 |
200 | |
8772537c |
201 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); |
6683b158 |
202 | |
203 | if (SvREFCNT(sv) == 1) { |
204 | /* We hold the last reference to this SV, which implies that the |
205 | SV was deleted as a side effect of the routines we called. */ |
0c34ef67 |
206 | SvOK_off(sv); |
6683b158 |
207 | } |
79072805 |
208 | return 0; |
209 | } |
210 | |
954c1994 |
211 | /* |
212 | =for apidoc mg_set |
213 | |
214 | Do magic after a value is assigned to the SV. See C<sv_magic>. |
215 | |
216 | =cut |
217 | */ |
218 | |
79072805 |
219 | int |
864dbfa3 |
220 | Perl_mg_set(pTHX_ SV *sv) |
79072805 |
221 | { |
35a4481c |
222 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 |
223 | MAGIC* mg; |
463ee0b2 |
224 | MAGIC* nextmg; |
225 | |
455ece5e |
226 | save_magic(mgs_ix, sv); |
463ee0b2 |
227 | |
228 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
e1ec3a88 |
229 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 |
230 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e |
231 | if (mg->mg_flags & MGf_GSKIP) { |
232 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ |
455ece5e |
233 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e |
234 | } |
2b260de0 |
235 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 |
236 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 |
237 | } |
463ee0b2 |
238 | |
8772537c |
239 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 |
240 | return 0; |
241 | } |
242 | |
954c1994 |
243 | /* |
244 | =for apidoc mg_length |
245 | |
246 | Report on the SV's length. See C<sv_magic>. |
247 | |
248 | =cut |
249 | */ |
250 | |
79072805 |
251 | U32 |
864dbfa3 |
252 | Perl_mg_length(pTHX_ SV *sv) |
79072805 |
253 | { |
254 | MAGIC* mg; |
463ee0b2 |
255 | STRLEN len; |
463ee0b2 |
256 | |
79072805 |
257 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c |
258 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 |
259 | if (vtbl && vtbl->svt_len) { |
35a4481c |
260 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e |
261 | save_magic(mgs_ix, sv); |
a0d0e21e |
262 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 |
263 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c |
264 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 |
265 | return len; |
266 | } |
267 | } |
268 | |
35a4481c |
269 | if (DO_UTF8(sv)) { |
10516c54 |
270 | const U8 *s = (U8*)SvPV_const(sv, len); |
5636d518 |
271 | len = Perl_utf8_length(aTHX_ s, s + len); |
272 | } |
273 | else |
10516c54 |
274 | (void)SvPV_const(sv, len); |
463ee0b2 |
275 | return len; |
79072805 |
276 | } |
277 | |
8fb26106 |
278 | I32 |
864dbfa3 |
279 | Perl_mg_size(pTHX_ SV *sv) |
93965878 |
280 | { |
281 | MAGIC* mg; |
ac27b0f5 |
282 | |
93965878 |
283 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c |
284 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 |
285 | if (vtbl && vtbl->svt_len) { |
35a4481c |
286 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
287 | I32 len; |
455ece5e |
288 | save_magic(mgs_ix, sv); |
93965878 |
289 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 |
290 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c |
291 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 |
292 | return len; |
293 | } |
294 | } |
295 | |
296 | switch(SvTYPE(sv)) { |
297 | case SVt_PVAV: |
35a4481c |
298 | return AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
93965878 |
299 | case SVt_PVHV: |
300 | /* FIXME */ |
301 | default: |
cea2e8a9 |
302 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 |
303 | break; |
304 | } |
305 | return 0; |
306 | } |
307 | |
954c1994 |
308 | /* |
309 | =for apidoc mg_clear |
310 | |
311 | Clear something magical that the SV represents. See C<sv_magic>. |
312 | |
313 | =cut |
314 | */ |
315 | |
79072805 |
316 | int |
864dbfa3 |
317 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 |
318 | { |
35a4481c |
319 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 |
320 | MAGIC* mg; |
463ee0b2 |
321 | |
455ece5e |
322 | save_magic(mgs_ix, sv); |
463ee0b2 |
323 | |
79072805 |
324 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c |
325 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e |
326 | /* omit GSKIP -- never set here */ |
727405f8 |
327 | |
2b260de0 |
328 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 |
329 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 |
330 | } |
463ee0b2 |
331 | |
8772537c |
332 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 |
333 | return 0; |
334 | } |
335 | |
954c1994 |
336 | /* |
337 | =for apidoc mg_find |
338 | |
339 | Finds the magic pointer for type matching the SV. See C<sv_magic>. |
340 | |
341 | =cut |
342 | */ |
343 | |
93a17b20 |
344 | MAGIC* |
35a4481c |
345 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 |
346 | { |
35a4481c |
347 | if (sv) { |
348 | MAGIC *mg; |
349 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
350 | if (mg->mg_type == type) |
351 | return mg; |
352 | } |
93a17b20 |
353 | } |
354 | return 0; |
355 | } |
356 | |
954c1994 |
357 | /* |
358 | =for apidoc mg_copy |
359 | |
360 | Copies the magic from one SV to another. See C<sv_magic>. |
361 | |
362 | =cut |
363 | */ |
364 | |
79072805 |
365 | int |
864dbfa3 |
366 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 |
367 | { |
463ee0b2 |
368 | int count = 0; |
79072805 |
369 | MAGIC* mg; |
463ee0b2 |
370 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c |
371 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 |
372 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
373 | count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen); |
374 | } |
823a54a3 |
375 | else { |
376 | const char type = mg->mg_type; |
377 | if (isUPPER(type)) { |
378 | sv_magic(nsv, |
379 | (type == PERL_MAGIC_tied) |
380 | ? SvTIED_obj(sv, mg) |
381 | : (type == PERL_MAGIC_regdata && mg->mg_obj) |
382 | ? sv |
383 | : mg->mg_obj, |
384 | toLOWER(type), key, klen); |
385 | count++; |
386 | } |
79072805 |
387 | } |
79072805 |
388 | } |
463ee0b2 |
389 | return count; |
79072805 |
390 | } |
391 | |
954c1994 |
392 | /* |
0cbee0a4 |
393 | =for apidoc mg_localize |
394 | |
395 | Copy some of the magic from an existing SV to new localized version of |
396 | that SV. Container magic (eg %ENV, $1, tie) gets copied, value magic |
397 | doesn't (eg taint, pos). |
398 | |
399 | =cut |
400 | */ |
401 | |
402 | void |
403 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv) |
404 | { |
405 | MAGIC *mg; |
406 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
407 | const MGVTBL* const vtbl = mg->mg_virtual; |
408 | switch (mg->mg_type) { |
409 | /* value magic types: don't copy */ |
410 | case PERL_MAGIC_bm: |
411 | case PERL_MAGIC_fm: |
412 | case PERL_MAGIC_regex_global: |
413 | case PERL_MAGIC_nkeys: |
414 | #ifdef USE_LOCALE_COLLATE |
415 | case PERL_MAGIC_collxfrm: |
416 | #endif |
417 | case PERL_MAGIC_qr: |
418 | case PERL_MAGIC_taint: |
419 | case PERL_MAGIC_vec: |
420 | case PERL_MAGIC_vstring: |
421 | case PERL_MAGIC_utf8: |
422 | case PERL_MAGIC_substr: |
423 | case PERL_MAGIC_defelem: |
424 | case PERL_MAGIC_arylen: |
425 | case PERL_MAGIC_pos: |
426 | case PERL_MAGIC_backref: |
427 | case PERL_MAGIC_arylen_p: |
428 | case PERL_MAGIC_rhash: |
429 | case PERL_MAGIC_symtab: |
430 | continue; |
431 | } |
432 | |
433 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy) { |
434 | /* XXX calling the copy method is probably not correct. DAPM */ |
435 | (void)CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, |
436 | mg->mg_ptr, mg->mg_len); |
437 | } |
438 | else { |
439 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
440 | mg->mg_ptr, mg->mg_len); |
441 | } |
442 | /* container types should remain read-only across localization */ |
443 | SvFLAGS(nsv) |= SvREADONLY(sv); |
444 | } |
445 | |
446 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { |
447 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
448 | PL_localizing = 1; |
449 | SvSETMAGIC(nsv); |
450 | PL_localizing = 0; |
451 | } |
452 | } |
453 | |
454 | /* |
954c1994 |
455 | =for apidoc mg_free |
456 | |
457 | Free any magic storage used by the SV. See C<sv_magic>. |
458 | |
459 | =cut |
460 | */ |
461 | |
79072805 |
462 | int |
864dbfa3 |
463 | Perl_mg_free(pTHX_ SV *sv) |
79072805 |
464 | { |
465 | MAGIC* mg; |
466 | MAGIC* moremagic; |
467 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
35a4481c |
468 | const MGVTBL* const vtbl = mg->mg_virtual; |
79072805 |
469 | moremagic = mg->mg_moremagic; |
2b260de0 |
470 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 |
471 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 |
472 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
979acdb5 |
473 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) |
88e89b8a |
474 | Safefree(mg->mg_ptr); |
565764a8 |
475 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a |
476 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d460ef45 |
477 | } |
b881518d |
478 | if (mg->mg_flags & MGf_REFCOUNTED) |
479 | SvREFCNT_dec(mg->mg_obj); |
79072805 |
480 | Safefree(mg); |
481 | } |
b162af07 |
482 | SvMAGIC_set(sv, NULL); |
79072805 |
483 | return 0; |
484 | } |
485 | |
79072805 |
486 | #include <signal.h> |
79072805 |
487 | |
942e002e |
488 | U32 |
864dbfa3 |
489 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 |
490 | { |
8772537c |
491 | PERL_UNUSED_ARG(sv); |
6cef1e77 |
492 | |
0bd48802 |
493 | if (PL_curpm) { |
494 | register const REGEXP * const rx = PM_GETRE(PL_curpm); |
495 | if (rx) { |
496 | return mg->mg_obj |
497 | ? rx->nparens /* @+ */ |
498 | : rx->lastparen; /* @- */ |
499 | } |
8f580fb8 |
500 | } |
ac27b0f5 |
501 | |
942e002e |
502 | return (U32)-1; |
6cef1e77 |
503 | } |
504 | |
505 | int |
864dbfa3 |
506 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 |
507 | { |
0bd48802 |
508 | if (PL_curpm) { |
509 | register const REGEXP * const rx = PM_GETRE(PL_curpm); |
510 | if (rx) { |
511 | register const I32 paren = mg->mg_len; |
512 | register I32 s; |
513 | register I32 t; |
514 | if (paren < 0) |
515 | return 0; |
516 | if (paren <= (I32)rx->nparens && |
517 | (s = rx->startp[paren]) != -1 && |
518 | (t = rx->endp[paren]) != -1) |
519 | { |
520 | register I32 i; |
521 | if (mg->mg_obj) /* @+ */ |
522 | i = t; |
523 | else /* @- */ |
524 | i = s; |
525 | |
526 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
527 | const char * const b = rx->subbeg; |
528 | if (b) |
529 | i = Perl_utf8_length(aTHX_ (U8*)b, (U8*)(b+i)); |
530 | } |
727405f8 |
531 | |
0bd48802 |
532 | sv_setiv(sv, i); |
1aa99e6b |
533 | } |
0bd48802 |
534 | } |
6cef1e77 |
535 | } |
536 | return 0; |
537 | } |
538 | |
e4b89193 |
539 | int |
a29d06ed |
540 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
541 | { |
8772537c |
542 | PERL_UNUSED_ARG(sv); PERL_UNUSED_ARG(mg); |
a29d06ed |
543 | Perl_croak(aTHX_ PL_no_modify); |
0dbb1585 |
544 | NORETURN_FUNCTION_END; |
a29d06ed |
545 | } |
546 | |
93a17b20 |
547 | U32 |
864dbfa3 |
548 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 |
549 | { |
550 | register I32 paren; |
93a17b20 |
551 | register I32 i; |
dd374669 |
552 | register const REGEXP *rx; |
a197cbdd |
553 | I32 s1, t1; |
93a17b20 |
554 | |
555 | switch (*mg->mg_ptr) { |
556 | case '1': case '2': case '3': case '4': |
557 | case '5': case '6': case '7': case '8': case '9': case '&': |
aaa362c4 |
558 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d |
559 | |
ffc61ed2 |
560 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
93a17b20 |
561 | getparen: |
eb160463 |
562 | if (paren <= (I32)rx->nparens && |
cf93c79d |
563 | (s1 = rx->startp[paren]) != -1 && |
564 | (t1 = rx->endp[paren]) != -1) |
bbce6d69 |
565 | { |
cf93c79d |
566 | i = t1 - s1; |
a197cbdd |
567 | getlen: |
a30b2f1f |
568 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
a28509cc |
569 | const char * const s = rx->subbeg + s1; |
768c67ee |
570 | const U8 *ep; |
571 | STRLEN el; |
ffc61ed2 |
572 | |
6d5fa195 |
573 | i = t1 - s1; |
768c67ee |
574 | if (is_utf8_string_loclen((U8*)s, i, &ep, &el)) |
575 | i = el; |
a197cbdd |
576 | } |
ffc61ed2 |
577 | if (i < 0) |
0844c848 |
578 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 |
579 | return i; |
93a17b20 |
580 | } |
235bddc8 |
581 | else { |
582 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c |
583 | report_uninit(sv); |
235bddc8 |
584 | } |
585 | } |
586 | else { |
587 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c |
588 | report_uninit(sv); |
93a17b20 |
589 | } |
748a9306 |
590 | return 0; |
93a17b20 |
591 | case '+': |
aaa362c4 |
592 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 |
593 | paren = rx->lastparen; |
13f57bf8 |
594 | if (paren) |
595 | goto getparen; |
93a17b20 |
596 | } |
748a9306 |
597 | return 0; |
a01268b5 |
598 | case '\016': /* ^N */ |
599 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
600 | paren = rx->lastcloseparen; |
601 | if (paren) |
602 | goto getparen; |
603 | } |
604 | return 0; |
93a17b20 |
605 | case '`': |
aaa362c4 |
606 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d |
607 | if (rx->startp[0] != -1) { |
608 | i = rx->startp[0]; |
a197cbdd |
609 | if (i > 0) { |
610 | s1 = 0; |
611 | t1 = i; |
612 | goto getlen; |
613 | } |
93a17b20 |
614 | } |
93a17b20 |
615 | } |
748a9306 |
616 | return 0; |
93a17b20 |
617 | case '\'': |
aaa362c4 |
618 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d |
619 | if (rx->endp[0] != -1) { |
620 | i = rx->sublen - rx->endp[0]; |
a197cbdd |
621 | if (i > 0) { |
622 | s1 = rx->endp[0]; |
623 | t1 = rx->sublen; |
624 | goto getlen; |
625 | } |
93a17b20 |
626 | } |
93a17b20 |
627 | } |
748a9306 |
628 | return 0; |
93a17b20 |
629 | } |
630 | magic_get(sv,mg); |
2d8e6c8d |
631 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 |
632 | sv_2pv(sv, 0); |
2d8e6c8d |
633 | } |
93a17b20 |
634 | if (SvPOK(sv)) |
635 | return SvCUR(sv); |
636 | return 0; |
637 | } |
638 | |
ad3296c6 |
639 | #define SvRTRIM(sv) STMT_START { \ |
640 | STRLEN len = SvCUR(sv); \ |
641 | while (len > 0 && isSPACE(SvPVX(sv)[len-1])) \ |
642 | --len; \ |
643 | SvCUR_set(sv, len); \ |
644 | } STMT_END |
645 | |
79072805 |
646 | int |
864dbfa3 |
647 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
648 | { |
27da23d5 |
649 | dVAR; |
79072805 |
650 | register I32 paren; |
35272f84 |
651 | register char *s = NULL; |
79072805 |
652 | register I32 i; |
d9f97599 |
653 | register REGEXP *rx; |
823a54a3 |
654 | const char * const remaining = mg->mg_ptr + 1; |
655 | const char nextchar = *remaining; |
79072805 |
656 | |
657 | switch (*mg->mg_ptr) { |
748a9306 |
658 | case '\001': /* ^A */ |
3280af22 |
659 | sv_setsv(sv, PL_bodytarget); |
748a9306 |
660 | break; |
e5218da5 |
661 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 |
662 | if (nextchar == '\0') { |
e5218da5 |
663 | sv_setiv(sv, (IV)PL_minus_c); |
664 | } |
823a54a3 |
665 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 |
666 | sv_setiv(sv, (IV)STATUS_NATIVE); |
667 | } |
49460fe6 |
668 | break; |
669 | |
79072805 |
670 | case '\004': /* ^D */ |
aea4f609 |
671 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 |
672 | break; |
28f23441 |
673 | case '\005': /* ^E */ |
823a54a3 |
674 | if (nextchar == '\0') { |
cd39f2b6 |
675 | #ifdef MACOS_TRADITIONAL |
0a378802 |
676 | { |
677 | char msg[256]; |
727405f8 |
678 | |
0a378802 |
679 | sv_setnv(sv,(double)gMacPerl_OSErr); |
727405f8 |
680 | sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : ""); |
0a378802 |
681 | } |
727405f8 |
682 | #else |
28f23441 |
683 | #ifdef VMS |
0a378802 |
684 | { |
685 | # include <descrip.h> |
686 | # include <starlet.h> |
687 | char msg[255]; |
688 | $DESCRIPTOR(msgdsc,msg); |
689 | sv_setnv(sv,(NV) vaxc$errno); |
690 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) |
691 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); |
692 | else |
c69006e4 |
693 | sv_setpvn(sv,"",0); |
0a378802 |
694 | } |
28f23441 |
695 | #else |
88e89b8a |
696 | #ifdef OS2 |
0a378802 |
697 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
698 | sv_setnv(sv, (NV)errno); |
699 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
700 | } else { |
701 | if (errno != errno_isOS2) { |
823a54a3 |
702 | const int tmp = _syserrno(); |
0a378802 |
703 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
704 | Perl_rc = tmp; |
705 | } |
706 | sv_setnv(sv, (NV)Perl_rc); |
707 | sv_setpv(sv, os2error(Perl_rc)); |
708 | } |
88e89b8a |
709 | #else |
22fae026 |
710 | #ifdef WIN32 |
0a378802 |
711 | { |
712 | DWORD dwErr = GetLastError(); |
713 | sv_setnv(sv, (NV)dwErr); |
823a54a3 |
714 | if (dwErr) { |
0a378802 |
715 | PerlProc_GetOSError(sv, dwErr); |
716 | } |
717 | else |
c69006e4 |
718 | sv_setpvn(sv, "", 0); |
0a378802 |
719 | SetLastError(dwErr); |
720 | } |
22fae026 |
721 | #else |
f6c8f21d |
722 | { |
8772537c |
723 | const int saveerrno = errno; |
f6c8f21d |
724 | sv_setnv(sv, (NV)errno); |
725 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
726 | errno = saveerrno; |
727 | } |
28f23441 |
728 | #endif |
88e89b8a |
729 | #endif |
22fae026 |
730 | #endif |
cd39f2b6 |
731 | #endif |
ad3296c6 |
732 | SvRTRIM(sv); |
0a378802 |
733 | SvNOK_on(sv); /* what a wonderful hack! */ |
734 | } |
823a54a3 |
735 | else if (strEQ(remaining, "NCODING")) |
0a378802 |
736 | sv_setsv(sv, PL_encoding); |
737 | break; |
79072805 |
738 | case '\006': /* ^F */ |
3280af22 |
739 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 |
740 | break; |
a0d0e21e |
741 | case '\010': /* ^H */ |
3280af22 |
742 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e |
743 | break; |
9d116dd7 |
744 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 |
745 | if (PL_inplace) |
746 | sv_setpv(sv, PL_inplace); |
79072805 |
747 | else |
3280af22 |
748 | sv_setsv(sv, &PL_sv_undef); |
79072805 |
749 | break; |
ac27b0f5 |
750 | case '\017': /* ^O & ^OPEN */ |
823a54a3 |
751 | if (nextchar == '\0') { |
ac27b0f5 |
752 | sv_setpv(sv, PL_osname); |
3511154c |
753 | SvTAINTED_off(sv); |
754 | } |
823a54a3 |
755 | else if (strEQ(remaining, "PEN")) { |
ac27b0f5 |
756 | if (!PL_compiling.cop_io) |
757 | sv_setsv(sv, &PL_sv_undef); |
758 | else { |
759 | sv_setsv(sv, PL_compiling.cop_io); |
760 | } |
761 | } |
28f23441 |
762 | break; |
79072805 |
763 | case '\020': /* ^P */ |
3280af22 |
764 | sv_setiv(sv, (IV)PL_perldb); |
79072805 |
765 | break; |
fb73857a |
766 | case '\023': /* ^S */ |
823a54a3 |
767 | if (nextchar == '\0') { |
3280af22 |
768 | if (PL_lex_state != LEX_NOTPARSING) |
0c34ef67 |
769 | SvOK_off(sv); |
3280af22 |
770 | else if (PL_in_eval) |
6dc8a9e4 |
771 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a |
772 | else |
773 | sv_setiv(sv, 0); |
d58bf5aa |
774 | } |
fb73857a |
775 | break; |
79072805 |
776 | case '\024': /* ^T */ |
823a54a3 |
777 | if (nextchar == '\0') { |
88e89b8a |
778 | #ifdef BIG_TIME |
7c36658b |
779 | sv_setnv(sv, PL_basetime); |
88e89b8a |
780 | #else |
7c36658b |
781 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a |
782 | #endif |
7c36658b |
783 | } |
823a54a3 |
784 | else if (strEQ(remaining, "AINT")) |
9aa05f58 |
785 | sv_setiv(sv, PL_tainting |
786 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) |
787 | : 0); |
7c36658b |
788 | break; |
7cebcbc0 |
789 | case '\025': /* $^UNICODE, $^UTF8LOCALE */ |
823a54a3 |
790 | if (strEQ(remaining, "NICODE")) |
a05d7ebb |
791 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 |
792 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 |
793 | sv_setuv(sv, (UV) PL_utf8locale); |
fde18df1 |
794 | break; |
795 | case '\027': /* ^W & $^WARNING_BITS */ |
823a54a3 |
796 | if (nextchar == '\0') |
4438c4b7 |
797 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 |
798 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 |
799 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 |
800 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 |
801 | } |
802 | else if (PL_compiling.cop_warnings == pWARN_STD) { |
803 | sv_setpvn( |
804 | sv, |
805 | (PL_dowarn & G_WARN_ON) ? WARN_ALLstring : WARN_NONEstring, |
806 | WARNsize |
807 | ); |
808 | } |
d3a7d8c7 |
809 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca |
810 | /* Get the bit mask for $warnings::Bits{all}, because |
811 | * it could have been extended by warnings::register */ |
812 | SV **bits_all; |
823a54a3 |
813 | HV * const bits=get_hv("warnings::Bits", FALSE); |
75b6c4ca |
814 | if (bits && (bits_all=hv_fetch(bits, "all", 3, FALSE))) { |
815 | sv_setsv(sv, *bits_all); |
816 | } |
817 | else { |
818 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; |
819 | } |
ac27b0f5 |
820 | } |
4438c4b7 |
821 | else { |
822 | sv_setsv(sv, PL_compiling.cop_warnings); |
ac27b0f5 |
823 | } |
d3a7d8c7 |
824 | SvPOK_only(sv); |
4438c4b7 |
825 | } |
79072805 |
826 | break; |
827 | case '1': case '2': case '3': case '4': |
828 | case '5': case '6': case '7': case '8': case '9': case '&': |
aaa362c4 |
829 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d |
830 | I32 s1, t1; |
831 | |
a863c7d1 |
832 | /* |
833 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); |
834 | * XXX Does the new way break anything? |
835 | */ |
ffc61ed2 |
836 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
79072805 |
837 | getparen: |
eb160463 |
838 | if (paren <= (I32)rx->nparens && |
cf93c79d |
839 | (s1 = rx->startp[paren]) != -1 && |
840 | (t1 = rx->endp[paren]) != -1) |
bbce6d69 |
841 | { |
cf93c79d |
842 | i = t1 - s1; |
843 | s = rx->subbeg + s1; |
01ec43d0 |
844 | if (!rx->subbeg) |
c2e66d9e |
845 | break; |
846 | |
13f57bf8 |
847 | getrx: |
748a9306 |
848 | if (i >= 0) { |
fabdb6c0 |
849 | const int oldtainted = PL_tainted; |
f6ba9920 |
850 | TAINT_NOT; |
cf93c79d |
851 | sv_setpvn(sv, s, i); |
f6ba9920 |
852 | PL_tainted = oldtainted; |
a30b2f1f |
853 | if (RX_MATCH_UTF8(rx) && is_utf8_string((U8*)s, i)) |
7e2040f0 |
854 | SvUTF8_on(sv); |
855 | else |
856 | SvUTF8_off(sv); |
e9814ee1 |
857 | if (PL_tainting) { |
858 | if (RX_MATCH_TAINTED(rx)) { |
823a54a3 |
859 | MAGIC* const mg = SvMAGIC(sv); |
e9814ee1 |
860 | MAGIC* mgt; |
861 | PL_tainted = 1; |
b162af07 |
862 | SvMAGIC_set(sv, mg->mg_moremagic); |
e9814ee1 |
863 | SvTAINT(sv); |
864 | if ((mgt = SvMAGIC(sv))) { |
865 | mg->mg_moremagic = mgt; |
b162af07 |
866 | SvMAGIC_set(sv, mg); |
e9814ee1 |
867 | } |
868 | } else |
869 | SvTAINTED_off(sv); |
870 | } |
748a9306 |
871 | break; |
872 | } |
79072805 |
873 | } |
79072805 |
874 | } |
3280af22 |
875 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
876 | break; |
877 | case '+': |
aaa362c4 |
878 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 |
879 | paren = rx->lastparen; |
a0d0e21e |
880 | if (paren) |
881 | goto getparen; |
79072805 |
882 | } |
3280af22 |
883 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
884 | break; |
a01268b5 |
885 | case '\016': /* ^N */ |
886 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
887 | paren = rx->lastcloseparen; |
888 | if (paren) |
889 | goto getparen; |
890 | } |
891 | sv_setsv(sv,&PL_sv_undef); |
892 | break; |
79072805 |
893 | case '`': |
aaa362c4 |
894 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d |
895 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
896 | i = rx->startp[0]; |
13f57bf8 |
897 | goto getrx; |
79072805 |
898 | } |
79072805 |
899 | } |
3280af22 |
900 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
901 | break; |
902 | case '\'': |
aaa362c4 |
903 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d |
904 | if (rx->subbeg && rx->endp[0] != -1) { |
905 | s = rx->subbeg + rx->endp[0]; |
906 | i = rx->sublen - rx->endp[0]; |
13f57bf8 |
907 | goto getrx; |
79072805 |
908 | } |
79072805 |
909 | } |
3280af22 |
910 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
911 | break; |
912 | case '.': |
3280af22 |
913 | if (GvIO(PL_last_in_gv)) { |
357c8808 |
914 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 |
915 | } |
79072805 |
916 | break; |
917 | case '?': |
809a5acc |
918 | { |
809a5acc |
919 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 |
920 | #ifdef COMPLEX_STATUS |
6b88bc9c |
921 | LvTARGOFF(sv) = PL_statusvalue; |
922 | LvTARGLEN(sv) = PL_statusvalue_vms; |
ff0cee69 |
923 | #endif |
809a5acc |
924 | } |
79072805 |
925 | break; |
926 | case '^': |
0daa599b |
927 | if (GvIOp(PL_defoutgv)) |
928 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 |
929 | if (s) |
930 | sv_setpv(sv,s); |
931 | else { |
3280af22 |
932 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 |
933 | sv_catpv(sv,"_TOP"); |
934 | } |
935 | break; |
936 | case '~': |
0daa599b |
937 | if (GvIOp(PL_defoutgv)) |
938 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 |
939 | if (!s) |
3280af22 |
940 | s = GvENAME(PL_defoutgv); |
79072805 |
941 | sv_setpv(sv,s); |
942 | break; |
79072805 |
943 | case '=': |
0daa599b |
944 | if (GvIOp(PL_defoutgv)) |
945 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 |
946 | break; |
947 | case '-': |
0daa599b |
948 | if (GvIOp(PL_defoutgv)) |
949 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 |
950 | break; |
951 | case '%': |
0daa599b |
952 | if (GvIOp(PL_defoutgv)) |
953 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 |
954 | break; |
79072805 |
955 | case ':': |
956 | break; |
957 | case '/': |
958 | break; |
959 | case '[': |
3280af22 |
960 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 |
961 | break; |
962 | case '|': |
0daa599b |
963 | if (GvIOp(PL_defoutgv)) |
964 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 |
965 | break; |
966 | case ',': |
79072805 |
967 | break; |
968 | case '\\': |
b2ce0fda |
969 | if (PL_ors_sv) |
f28098ff |
970 | sv_copypv(sv, PL_ors_sv); |
79072805 |
971 | break; |
79072805 |
972 | case '!': |
a5f75d66 |
973 | #ifdef VMS |
65202027 |
974 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a |
975 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 |
976 | #else |
88e89b8a |
977 | { |
8772537c |
978 | const int saveerrno = errno; |
65202027 |
979 | sv_setnv(sv, (NV)errno); |
88e89b8a |
980 | #ifdef OS2 |
ed344e4f |
981 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
982 | sv_setpv(sv, os2error(Perl_rc)); |
88e89b8a |
983 | else |
a5f75d66 |
984 | #endif |
2304df62 |
985 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a |
986 | errno = saveerrno; |
987 | } |
988 | #endif |
ad3296c6 |
989 | SvRTRIM(sv); |
946ec16e |
990 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 |
991 | break; |
992 | case '<': |
3280af22 |
993 | sv_setiv(sv, (IV)PL_uid); |
79072805 |
994 | break; |
995 | case '>': |
3280af22 |
996 | sv_setiv(sv, (IV)PL_euid); |
79072805 |
997 | break; |
998 | case '(': |
3280af22 |
999 | sv_setiv(sv, (IV)PL_gid); |
a52cb5f7 |
1000 | #ifdef HAS_GETGROUPS |
a3b680e6 |
1001 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, (long unsigned int)PL_gid); |
a52cb5f7 |
1002 | #endif |
79072805 |
1003 | goto add_groups; |
1004 | case ')': |
3280af22 |
1005 | sv_setiv(sv, (IV)PL_egid); |
a52cb5f7 |
1006 | #ifdef HAS_GETGROUPS |
a3b680e6 |
1007 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, (long unsigned int)PL_egid); |
a52cb5f7 |
1008 | #endif |
79072805 |
1009 | add_groups: |
79072805 |
1010 | #ifdef HAS_GETGROUPS |
79072805 |
1011 | { |
57d7c65e |
1012 | Groups_t *gary = NULL; |
1013 | I32 num_groups = getgroups(0, gary); |
1014 | Newx(gary, num_groups, Groups_t); |
1015 | num_groups = getgroups(num_groups, gary); |
1016 | while (--num_groups >= 0) |
1017 | Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, |
1018 | (long unsigned int)gary[num_groups]); |
1019 | Safefree(gary); |
79072805 |
1020 | } |
1021 | #endif |
155aba94 |
1022 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 |
1023 | break; |
cd39f2b6 |
1024 | #ifndef MACOS_TRADITIONAL |
79072805 |
1025 | case '0': |
1026 | break; |
cd39f2b6 |
1027 | #endif |
79072805 |
1028 | } |
a0d0e21e |
1029 | return 0; |
79072805 |
1030 | } |
1031 | |
1032 | int |
864dbfa3 |
1033 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1034 | { |
8772537c |
1035 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 |
1036 | |
1037 | if (uf && uf->uf_val) |
24f81a43 |
1038 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 |
1039 | return 0; |
1040 | } |
1041 | |
1042 | int |
864dbfa3 |
1043 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1044 | { |
27da23d5 |
1045 | dVAR; |
5aabfad6 |
1046 | STRLEN len, klen; |
fabdb6c0 |
1047 | const char *s = SvPV_const(sv,len); |
1048 | const char * const ptr = MgPV_const(mg,klen); |
88e89b8a |
1049 | my_setenv(ptr, s); |
1e422769 |
1050 | |
a0d0e21e |
1051 | #ifdef DYNAMIC_ENV_FETCH |
1052 | /* We just undefd an environment var. Is a replacement */ |
1053 | /* waiting in the wings? */ |
1054 | if (!len) { |
fabdb6c0 |
1055 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE); |
1056 | if (valp) |
b83604b4 |
1057 | s = SvPV_const(*valp, len); |
a0d0e21e |
1058 | } |
1059 | #endif |
1e422769 |
1060 | |
39e571d4 |
1061 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 |
1062 | /* And you'll never guess what the dog had */ |
1063 | /* in its mouth... */ |
3280af22 |
1064 | if (PL_tainting) { |
1e422769 |
1065 | MgTAINTEDDIR_off(mg); |
1066 | #ifdef VMS |
5aabfad6 |
1067 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
b8ffc8df |
1068 | char pathbuf[256], eltbuf[256], *cp, *elt; |
c623ac67 |
1069 | Stat_t sbuf; |
1e422769 |
1070 | int i = 0, j = 0; |
1071 | |
b8ffc8df |
1072 | strncpy(eltbuf, s, 255); |
1073 | eltbuf[255] = 0; |
1074 | elt = eltbuf; |
1e422769 |
1075 | do { /* DCL$PATH may be a search list */ |
1076 | while (1) { /* as may dev portion of any element */ |
1077 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { |
1078 | if ( *(cp+1) == '.' || *(cp+1) == '-' || |
1079 | cando_by_name(S_IWUSR,0,elt) ) { |
1080 | MgTAINTEDDIR_on(mg); |
1081 | return 0; |
1082 | } |
1083 | } |
1084 | if ((cp = strchr(elt, ':')) != Nullch) |
1085 | *cp = '\0'; |
1086 | if (my_trnlnm(elt, eltbuf, j++)) |
1087 | elt = eltbuf; |
1088 | else |
1089 | break; |
1090 | } |
1091 | j = 0; |
1092 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); |
1093 | } |
1094 | #endif /* VMS */ |
5aabfad6 |
1095 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
8772537c |
1096 | const char * const strend = s + len; |
463ee0b2 |
1097 | |
1098 | while (s < strend) { |
96827780 |
1099 | char tmpbuf[256]; |
c623ac67 |
1100 | Stat_t st; |
5f74f29c |
1101 | I32 i; |
96827780 |
1102 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e |
1103 | s, strend, ':', &i); |
463ee0b2 |
1104 | s++; |
96827780 |
1105 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
1106 | || *tmpbuf != '/' |
c6ed36e1 |
1107 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 |
1108 | MgTAINTEDDIR_on(mg); |
1e422769 |
1109 | return 0; |
1110 | } |
463ee0b2 |
1111 | } |
79072805 |
1112 | } |
1113 | } |
39e571d4 |
1114 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 |
1115 | |
79072805 |
1116 | return 0; |
1117 | } |
1118 | |
1119 | int |
864dbfa3 |
1120 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 |
1121 | { |
8772537c |
1122 | PERL_UNUSED_ARG(sv); |
01b8bcb7 |
1123 | my_setenv(MgPV_nolen_const(mg),Nullch); |
85e6fe83 |
1124 | return 0; |
1125 | } |
1126 | |
88e89b8a |
1127 | int |
864dbfa3 |
1128 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a |
1129 | { |
65e66c80 |
1130 | PERL_UNUSED_ARG(mg); |
b0269e46 |
1131 | #if defined(VMS) |
cea2e8a9 |
1132 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a |
1133 | #else |
3280af22 |
1134 | if (PL_localizing) { |
fb73857a |
1135 | HE* entry; |
b0269e46 |
1136 | my_clearenv(); |
fb73857a |
1137 | hv_iterinit((HV*)sv); |
155aba94 |
1138 | while ((entry = hv_iternext((HV*)sv))) { |
fb73857a |
1139 | I32 keylen; |
1140 | my_setenv(hv_iterkey(entry, &keylen), |
b83604b4 |
1141 | SvPV_nolen_const(hv_iterval((HV*)sv, entry))); |
fb73857a |
1142 | } |
1143 | } |
1144 | #endif |
1145 | return 0; |
1146 | } |
1147 | |
1148 | int |
864dbfa3 |
1149 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 |
1150 | { |
27da23d5 |
1151 | dVAR; |
8772537c |
1152 | PERL_UNUSED_ARG(sv); |
1153 | PERL_UNUSED_ARG(mg); |
b0269e46 |
1154 | #if defined(VMS) |
1155 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
1156 | #else |
1157 | my_clearenv(); |
1158 | #endif |
3e3baf6d |
1159 | return 0; |
66b1d557 |
1160 | } |
1161 | |
64ca3a65 |
1162 | #ifndef PERL_MICRO |
2d4fcd5e |
1163 | #ifdef HAS_SIGPROCMASK |
1164 | static void |
1165 | restore_sigmask(pTHX_ SV *save_sv) |
1166 | { |
0bd48802 |
1167 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
2d4fcd5e |
1168 | (void)sigprocmask(SIG_SETMASK, ossetp, (sigset_t *)0); |
1169 | } |
1170 | #endif |
66b1d557 |
1171 | int |
864dbfa3 |
1172 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a |
1173 | { |
88e89b8a |
1174 | /* Are we fetching a signal entry? */ |
8772537c |
1175 | const I32 i = whichsig(MgPV_nolen_const(mg)); |
e02bfb16 |
1176 | if (i > 0) { |
22c35a8c |
1177 | if(PL_psig_ptr[i]) |
1178 | sv_setsv(sv,PL_psig_ptr[i]); |
88e89b8a |
1179 | else { |
85b332e2 |
1180 | Sighandler_t sigstate; |
2e34cc90 |
1181 | sigstate = rsignal_state(i); |
23ada85b |
1182 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 |
1183 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) sigstate = SIG_IGN; |
2e34cc90 |
1184 | #endif |
1185 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 |
1186 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) sigstate = SIG_DFL; |
85b332e2 |
1187 | #endif |
88e89b8a |
1188 | /* cache state so we don't fetch it again */ |
8aad04aa |
1189 | if(sigstate == (Sighandler_t) SIG_IGN) |
88e89b8a |
1190 | sv_setpv(sv,"IGNORE"); |
1191 | else |
3280af22 |
1192 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c |
1193 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a |
1194 | SvTEMP_off(sv); |
1195 | } |
1196 | } |
1197 | return 0; |
1198 | } |
1199 | int |
864dbfa3 |
1200 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a |
1201 | { |
2d4fcd5e |
1202 | /* XXX Some of this code was copied from Perl_magic_setsig. A little |
1203 | * refactoring might be in order. |
1204 | */ |
27da23d5 |
1205 | dVAR; |
8772537c |
1206 | register const char * const s = MgPV_nolen_const(mg); |
1207 | PERL_UNUSED_ARG(sv); |
2d4fcd5e |
1208 | if (*s == '_') { |
27da23d5 |
1209 | SV** svp = 0; |
2d4fcd5e |
1210 | if (strEQ(s,"__DIE__")) |
1211 | svp = &PL_diehook; |
1212 | else if (strEQ(s,"__WARN__")) |
1213 | svp = &PL_warnhook; |
1214 | else |
1215 | Perl_croak(aTHX_ "No such hook: %s", s); |
27da23d5 |
1216 | if (svp && *svp) { |
8772537c |
1217 | SV * const to_dec = *svp; |
2d4fcd5e |
1218 | *svp = 0; |
1219 | SvREFCNT_dec(to_dec); |
1220 | } |
1221 | } |
1222 | else { |
2d4fcd5e |
1223 | /* Are we clearing a signal entry? */ |
8772537c |
1224 | const I32 i = whichsig(s); |
e02bfb16 |
1225 | if (i > 0) { |
2d4fcd5e |
1226 | #ifdef HAS_SIGPROCMASK |
1227 | sigset_t set, save; |
1228 | SV* save_sv; |
1229 | /* Avoid having the signal arrive at a bad time, if possible. */ |
1230 | sigemptyset(&set); |
1231 | sigaddset(&set,i); |
1232 | sigprocmask(SIG_BLOCK, &set, &save); |
1233 | ENTER; |
1234 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); |
1235 | SAVEFREESV(save_sv); |
1236 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); |
1237 | #endif |
1238 | PERL_ASYNC_CHECK(); |
1239 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 |
1240 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2d4fcd5e |
1241 | #endif |
1242 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 |
1243 | PL_sig_defaulting[i] = 1; |
5c1546dc |
1244 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e |
1245 | #else |
8aad04aa |
1246 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2d4fcd5e |
1247 | #endif |
1248 | if(PL_psig_name[i]) { |
1249 | SvREFCNT_dec(PL_psig_name[i]); |
1250 | PL_psig_name[i]=0; |
1251 | } |
1252 | if(PL_psig_ptr[i]) { |
dd374669 |
1253 | SV *to_dec=PL_psig_ptr[i]; |
2d4fcd5e |
1254 | PL_psig_ptr[i]=0; |
1255 | LEAVE; |
1256 | SvREFCNT_dec(to_dec); |
1257 | } |
1258 | else |
1259 | LEAVE; |
1260 | } |
88e89b8a |
1261 | } |
1262 | return 0; |
1263 | } |
3d37d572 |
1264 | |
dd374669 |
1265 | static void |
1266 | S_raise_signal(pTHX_ int sig) |
0a8e0eff |
1267 | { |
1268 | /* Set a flag to say this signal is pending */ |
1269 | PL_psig_pend[sig]++; |
1270 | /* And one to say _a_ signal is pending */ |
1271 | PL_sig_pending = 1; |
1272 | } |
1273 | |
1274 | Signal_t |
8aad04aa |
1275 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
1276 | Perl_csighandler(int sig, ...) |
1277 | #else |
0a8e0eff |
1278 | Perl_csighandler(int sig) |
8aad04aa |
1279 | #endif |
0a8e0eff |
1280 | { |
1018e26f |
1281 | #ifdef PERL_GET_SIG_CONTEXT |
1282 | dTHXa(PERL_GET_SIG_CONTEXT); |
1283 | #else |
85b332e2 |
1284 | dTHX; |
1285 | #endif |
23ada85b |
1286 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc |
1287 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 |
1288 | if (PL_sig_ignoring[sig]) return; |
85b332e2 |
1289 | #endif |
2e34cc90 |
1290 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 |
1291 | if (PL_sig_defaulting[sig]) |
2e34cc90 |
1292 | #ifdef KILL_BY_SIGPRC |
1293 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); |
1294 | #else |
1295 | exit(1); |
1296 | #endif |
1297 | #endif |
4ffa73a3 |
1298 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
1299 | /* Call the perl level handler now-- |
1300 | * with risk we may be in malloc() etc. */ |
1301 | (*PL_sighandlerp)(sig); |
1302 | else |
dd374669 |
1303 | S_raise_signal(aTHX_ sig); |
0a8e0eff |
1304 | } |
1305 | |
2e34cc90 |
1306 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1307 | void |
1308 | Perl_csighandler_init(void) |
1309 | { |
1310 | int sig; |
27da23d5 |
1311 | if (PL_sig_handlers_initted) return; |
2e34cc90 |
1312 | |
1313 | for (sig = 1; sig < SIG_SIZE; sig++) { |
1314 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
218fdd94 |
1315 | dTHX; |
27da23d5 |
1316 | PL_sig_defaulting[sig] = 1; |
5c1546dc |
1317 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 |
1318 | #endif |
1319 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 |
1320 | PL_sig_ignoring[sig] = 0; |
2e34cc90 |
1321 | #endif |
1322 | } |
27da23d5 |
1323 | PL_sig_handlers_initted = 1; |
2e34cc90 |
1324 | } |
1325 | #endif |
1326 | |
0a8e0eff |
1327 | void |
1328 | Perl_despatch_signals(pTHX) |
1329 | { |
1330 | int sig; |
1331 | PL_sig_pending = 0; |
1332 | for (sig = 1; sig < SIG_SIZE; sig++) { |
1333 | if (PL_psig_pend[sig]) { |
25da4428 |
1334 | PERL_BLOCKSIG_ADD(set, sig); |
1335 | PL_psig_pend[sig] = 0; |
1336 | PERL_BLOCKSIG_BLOCK(set); |
f5203343 |
1337 | (*PL_sighandlerp)(sig); |
25da4428 |
1338 | PERL_BLOCKSIG_UNBLOCK(set); |
0a8e0eff |
1339 | } |
1340 | } |
1341 | } |
1342 | |
85e6fe83 |
1343 | int |
864dbfa3 |
1344 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1345 | { |
27da23d5 |
1346 | dVAR; |
79072805 |
1347 | I32 i; |
b7953727 |
1348 | SV** svp = 0; |
2d4fcd5e |
1349 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1350 | * effects (due to closures). We must make sure that the new disposition |
1351 | * is in place before it is called. |
1352 | */ |
1353 | SV* to_dec = 0; |
e72dc28c |
1354 | STRLEN len; |
2d4fcd5e |
1355 | #ifdef HAS_SIGPROCMASK |
1356 | sigset_t set, save; |
1357 | SV* save_sv; |
1358 | #endif |
a0d0e21e |
1359 | |
d5263905 |
1360 | register const char *s = MgPV_const(mg,len); |
748a9306 |
1361 | if (*s == '_') { |
1362 | if (strEQ(s,"__DIE__")) |
3280af22 |
1363 | svp = &PL_diehook; |
748a9306 |
1364 | else if (strEQ(s,"__WARN__")) |
3280af22 |
1365 | svp = &PL_warnhook; |
748a9306 |
1366 | else |
cea2e8a9 |
1367 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 |
1368 | i = 0; |
4633a7c4 |
1369 | if (*svp) { |
2d4fcd5e |
1370 | to_dec = *svp; |
4633a7c4 |
1371 | *svp = 0; |
1372 | } |
748a9306 |
1373 | } |
1374 | else { |
1375 | i = whichsig(s); /* ...no, a brick */ |
86d86cad |
1376 | if (i <= 0) { |
e476b1b5 |
1377 | if (ckWARN(WARN_SIGNAL)) |
9014280d |
1378 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); |
748a9306 |
1379 | return 0; |
1380 | } |
2d4fcd5e |
1381 | #ifdef HAS_SIGPROCMASK |
1382 | /* Avoid having the signal arrive at a bad time, if possible. */ |
1383 | sigemptyset(&set); |
1384 | sigaddset(&set,i); |
1385 | sigprocmask(SIG_BLOCK, &set, &save); |
1386 | ENTER; |
1387 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); |
1388 | SAVEFREESV(save_sv); |
1389 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); |
1390 | #endif |
1391 | PERL_ASYNC_CHECK(); |
2e34cc90 |
1392 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 |
1393 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 |
1394 | #endif |
23ada85b |
1395 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 |
1396 | PL_sig_ignoring[i] = 0; |
85b332e2 |
1397 | #endif |
2e34cc90 |
1398 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 |
1399 | PL_sig_defaulting[i] = 0; |
2e34cc90 |
1400 | #endif |
22c35a8c |
1401 | SvREFCNT_dec(PL_psig_name[i]); |
2d4fcd5e |
1402 | to_dec = PL_psig_ptr[i]; |
22c35a8c |
1403 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a |
1404 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c |
1405 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c |
1406 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 |
1407 | } |
a0d0e21e |
1408 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
2d4fcd5e |
1409 | if (i) { |
5c1546dc |
1410 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e |
1411 | #ifdef HAS_SIGPROCMASK |
1412 | LEAVE; |
1413 | #endif |
1414 | } |
748a9306 |
1415 | else |
1416 | *svp = SvREFCNT_inc(sv); |
2d4fcd5e |
1417 | if(to_dec) |
1418 | SvREFCNT_dec(to_dec); |
a0d0e21e |
1419 | return 0; |
1420 | } |
e72dc28c |
1421 | s = SvPV_force(sv,len); |
748a9306 |
1422 | if (strEQ(s,"IGNORE")) { |
85b332e2 |
1423 | if (i) { |
23ada85b |
1424 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 |
1425 | PL_sig_ignoring[i] = 1; |
5c1546dc |
1426 | (void)rsignal(i, PL_csighandlerp); |
85b332e2 |
1427 | #else |
8aad04aa |
1428 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 |
1429 | #endif |
2d4fcd5e |
1430 | } |
748a9306 |
1431 | } |
1432 | else if (strEQ(s,"DEFAULT") || !*s) { |
1433 | if (i) |
2e34cc90 |
1434 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1435 | { |
27da23d5 |
1436 | PL_sig_defaulting[i] = 1; |
5c1546dc |
1437 | (void)rsignal(i, PL_csighandlerp); |
2e34cc90 |
1438 | } |
1439 | #else |
8aad04aa |
1440 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 |
1441 | #endif |
748a9306 |
1442 | } |
79072805 |
1443 | else { |
5aabfad6 |
1444 | /* |
1445 | * We should warn if HINT_STRICT_REFS, but without |
1446 | * access to a known hint bit in a known OP, we can't |
1447 | * tell whether HINT_STRICT_REFS is in force or not. |
1448 | */ |
46fc3d4c |
1449 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c |
1450 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 |
1451 | if (i) |
5c1546dc |
1452 | (void)rsignal(i, PL_csighandlerp); |
748a9306 |
1453 | else |
1454 | *svp = SvREFCNT_inc(sv); |
79072805 |
1455 | } |
2d4fcd5e |
1456 | #ifdef HAS_SIGPROCMASK |
1457 | if(i) |
1458 | LEAVE; |
1459 | #endif |
1460 | if(to_dec) |
1461 | SvREFCNT_dec(to_dec); |
79072805 |
1462 | return 0; |
1463 | } |
64ca3a65 |
1464 | #endif /* !PERL_MICRO */ |
79072805 |
1465 | |
1466 | int |
864dbfa3 |
1467 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1468 | { |
8772537c |
1469 | PERL_UNUSED_ARG(sv); |
1470 | PERL_UNUSED_ARG(mg); |
3280af22 |
1471 | PL_sub_generation++; |
463ee0b2 |
1472 | return 0; |
1473 | } |
1474 | |
1475 | int |
864dbfa3 |
1476 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1477 | { |
8772537c |
1478 | PERL_UNUSED_ARG(sv); |
1479 | PERL_UNUSED_ARG(mg); |
a0d0e21e |
1480 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 |
1481 | PL_amagic_generation++; |
463ee0b2 |
1482 | |
a0d0e21e |
1483 | return 0; |
1484 | } |
463ee0b2 |
1485 | |
946ec16e |
1486 | int |
864dbfa3 |
1487 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 |
1488 | { |
dd374669 |
1489 | HV * const hv = (HV*)LvTARG(sv); |
6ff81951 |
1490 | I32 i = 0; |
8772537c |
1491 | PERL_UNUSED_ARG(mg); |
7719e241 |
1492 | |
6ff81951 |
1493 | if (hv) { |
497b47a8 |
1494 | (void) hv_iterinit(hv); |
1495 | if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) |
1496 | i = HvKEYS(hv); |
1497 | else { |
1498 | while (hv_iternext(hv)) |
1499 | i++; |
1500 | } |
6ff81951 |
1501 | } |
1502 | |
1503 | sv_setiv(sv, (IV)i); |
1504 | return 0; |
1505 | } |
1506 | |
1507 | int |
864dbfa3 |
1508 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e |
1509 | { |
8772537c |
1510 | PERL_UNUSED_ARG(mg); |
946ec16e |
1511 | if (LvTARG(sv)) { |
1512 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); |
946ec16e |
1513 | } |
1514 | return 0; |
ac27b0f5 |
1515 | } |
946ec16e |
1516 | |
e336de0d |
1517 | /* caller is responsible for stack switching/cleanup */ |
565764a8 |
1518 | STATIC int |
e1ec3a88 |
1519 | S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val) |
a0d0e21e |
1520 | { |
1521 | dSP; |
463ee0b2 |
1522 | |
924508f0 |
1523 | PUSHMARK(SP); |
1524 | EXTEND(SP, n); |
33c27489 |
1525 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 |
1526 | if (n > 1) { |
93965878 |
1527 | if (mg->mg_ptr) { |
565764a8 |
1528 | if (mg->mg_len >= 0) |
79cb57f6 |
1529 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 |
1530 | else if (mg->mg_len == HEf_SVKEY) |
93965878 |
1531 | PUSHs((SV*)mg->mg_ptr); |
1532 | } |
14befaf4 |
1533 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { |
565764a8 |
1534 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 |
1535 | } |
1536 | } |
1537 | if (n > 2) { |
1538 | PUSHs(val); |
88e89b8a |
1539 | } |
463ee0b2 |
1540 | PUTBACK; |
1541 | |
864dbfa3 |
1542 | return call_method(meth, flags); |
946ec16e |
1543 | } |
1544 | |
76e3520e |
1545 | STATIC int |
e1ec3a88 |
1546 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e |
1547 | { |
27da23d5 |
1548 | dVAR; dSP; |
463ee0b2 |
1549 | |
a0d0e21e |
1550 | ENTER; |
1551 | SAVETMPS; |
e788e7d3 |
1552 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 |
1553 | |
33c27489 |
1554 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 |
1555 | sv_setsv(sv, *PL_stack_sp--); |
93965878 |
1556 | } |
463ee0b2 |
1557 | |
d3acc0f7 |
1558 | POPSTACK; |
a0d0e21e |
1559 | FREETMPS; |
1560 | LEAVE; |
1561 | return 0; |
1562 | } |
463ee0b2 |
1563 | |
a0d0e21e |
1564 | int |
864dbfa3 |
1565 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1566 | { |
a0d0e21e |
1567 | if (mg->mg_ptr) |
1568 | mg->mg_flags |= MGf_GSKIP; |
58f82c5c |
1569 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 |
1570 | return 0; |
1571 | } |
1572 | |
1573 | int |
864dbfa3 |
1574 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d |
1575 | { |
27da23d5 |
1576 | dVAR; dSP; |
a60c0954 |
1577 | ENTER; |
e788e7d3 |
1578 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 |
1579 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 |
1580 | POPSTACK; |
a60c0954 |
1581 | LEAVE; |
463ee0b2 |
1582 | return 0; |
1583 | } |
1584 | |
1585 | int |
864dbfa3 |
1586 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1587 | { |
a0d0e21e |
1588 | return magic_methpack(sv,mg,"DELETE"); |
1589 | } |
463ee0b2 |
1590 | |
93965878 |
1591 | |
1592 | U32 |
864dbfa3 |
1593 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 |
1594 | { |
27da23d5 |
1595 | dVAR; dSP; |
93965878 |
1596 | U32 retval = 0; |
1597 | |
1598 | ENTER; |
1599 | SAVETMPS; |
e788e7d3 |
1600 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 |
1601 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 |
1602 | sv = *PL_stack_sp--; |
a60c0954 |
1603 | retval = (U32) SvIV(sv)-1; |
93965878 |
1604 | } |
d3acc0f7 |
1605 | POPSTACK; |
93965878 |
1606 | FREETMPS; |
1607 | LEAVE; |
1608 | return retval; |
1609 | } |
1610 | |
cea2e8a9 |
1611 | int |
1612 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1613 | { |
27da23d5 |
1614 | dVAR; dSP; |
463ee0b2 |
1615 | |
e336de0d |
1616 | ENTER; |
e788e7d3 |
1617 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
1618 | PUSHMARK(SP); |
33c27489 |
1619 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 |
1620 | PUTBACK; |
864dbfa3 |
1621 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 |
1622 | POPSTACK; |
a60c0954 |
1623 | LEAVE; |
a3bcc51e |
1624 | |
463ee0b2 |
1625 | return 0; |
1626 | } |
1627 | |
1628 | int |
864dbfa3 |
1629 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 |
1630 | { |
27da23d5 |
1631 | dVAR; dSP; |
35a4481c |
1632 | const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 |
1633 | |
1634 | ENTER; |
a0d0e21e |
1635 | SAVETMPS; |
e788e7d3 |
1636 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
1637 | PUSHMARK(SP); |
1638 | EXTEND(SP, 2); |
33c27489 |
1639 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 |
1640 | if (SvOK(key)) |
1641 | PUSHs(key); |
1642 | PUTBACK; |
1643 | |
864dbfa3 |
1644 | if (call_method(meth, G_SCALAR)) |
3280af22 |
1645 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 |
1646 | |
d3acc0f7 |
1647 | POPSTACK; |
a0d0e21e |
1648 | FREETMPS; |
1649 | LEAVE; |
79072805 |
1650 | return 0; |
1651 | } |
1652 | |
1653 | int |
864dbfa3 |
1654 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1655 | { |
1656 | return magic_methpack(sv,mg,"EXISTS"); |
ac27b0f5 |
1657 | } |
a0d0e21e |
1658 | |
a3bcc51e |
1659 | SV * |
1660 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) |
1661 | { |
27da23d5 |
1662 | dVAR; dSP; |
a3bcc51e |
1663 | SV *retval = &PL_sv_undef; |
8772537c |
1664 | SV * const tied = SvTIED_obj((SV*)hv, mg); |
1665 | HV * const pkg = SvSTASH((SV*)SvRV(tied)); |
a3bcc51e |
1666 | |
1667 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1668 | SV *key; |
bfcb3514 |
1669 | if (HvEITER_get(hv)) |
a3bcc51e |
1670 | /* we are in an iteration so the hash cannot be empty */ |
1671 | return &PL_sv_yes; |
1672 | /* no xhv_eiter so now use FIRSTKEY */ |
1673 | key = sv_newmortal(); |
1674 | magic_nextpack((SV*)hv, mg, key); |
bfcb3514 |
1675 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e |
1676 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1677 | } |
1678 | |
1679 | /* there is a SCALAR method that we can call */ |
1680 | ENTER; |
1681 | PUSHSTACKi(PERLSI_MAGIC); |
1682 | PUSHMARK(SP); |
1683 | EXTEND(SP, 1); |
1684 | PUSHs(tied); |
1685 | PUTBACK; |
1686 | |
1687 | if (call_method("SCALAR", G_SCALAR)) |
1688 | retval = *PL_stack_sp--; |
1689 | POPSTACK; |
1690 | LEAVE; |
1691 | return retval; |
1692 | } |
1693 | |
a0d0e21e |
1694 | int |
864dbfa3 |
1695 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1696 | { |
8772537c |
1697 | GV * const gv = PL_DBline; |
1698 | const I32 i = SvTRUE(sv); |
1699 | SV ** const svp = av_fetch(GvAV(gv), |
01b8bcb7 |
1700 | atoi(MgPV_nolen_const(mg)), FALSE); |
8772537c |
1701 | if (svp && SvIOKp(*svp)) { |
1702 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); |
1703 | if (o) { |
1704 | /* set or clear breakpoint in the relevant control op */ |
1705 | if (i) |
1706 | o->op_flags |= OPf_SPECIAL; |
1707 | else |
1708 | o->op_flags &= ~OPf_SPECIAL; |
1709 | } |
5df8de69 |
1710 | } |
79072805 |
1711 | return 0; |
1712 | } |
1713 | |
1714 | int |
8772537c |
1715 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 |
1716 | { |
8772537c |
1717 | const AV * const obj = (AV*)mg->mg_obj; |
83bf042f |
1718 | if (obj) { |
1719 | sv_setiv(sv, AvFILL(obj) + PL_curcop->cop_arybase); |
1720 | } else { |
1721 | SvOK_off(sv); |
1722 | } |
79072805 |
1723 | return 0; |
1724 | } |
1725 | |
1726 | int |
864dbfa3 |
1727 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1728 | { |
8772537c |
1729 | AV * const obj = (AV*)mg->mg_obj; |
83bf042f |
1730 | if (obj) { |
1731 | av_fill(obj, SvIV(sv) - PL_curcop->cop_arybase); |
1732 | } else { |
1733 | if (ckWARN(WARN_MISC)) |
1734 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1735 | "Attempt to set length of freed array"); |
1736 | } |
1737 | return 0; |
1738 | } |
1739 | |
1740 | int |
1741 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) |
1742 | { |
53c1dcc0 |
1743 | PERL_UNUSED_ARG(sv); |
94f3782b |
1744 | /* during global destruction, mg_obj may already have been freed */ |
1745 | if (PL_in_clean_all) |
1ea47f64 |
1746 | return 0; |
94f3782b |
1747 | |
83bf042f |
1748 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
1749 | |
1750 | if (mg) { |
1751 | /* arylen scalar holds a pointer back to the array, but doesn't own a |
1752 | reference. Hence the we (the array) are about to go away with it |
1753 | still pointing at us. Clear its pointer, else it would be pointing |
1754 | at free memory. See the comment in sv_magic about reference loops, |
1755 | and why it can't own a reference to us. */ |
1756 | mg->mg_obj = 0; |
1757 | } |
a0d0e21e |
1758 | return 0; |
1759 | } |
1760 | |
1761 | int |
864dbfa3 |
1762 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1763 | { |
8772537c |
1764 | SV* const lsv = LvTARG(sv); |
ac27b0f5 |
1765 | |
a0d0e21e |
1766 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
14befaf4 |
1767 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
565764a8 |
1768 | if (mg && mg->mg_len >= 0) { |
a0ed51b3 |
1769 | I32 i = mg->mg_len; |
7e2040f0 |
1770 | if (DO_UTF8(lsv)) |
a0ed51b3 |
1771 | sv_pos_b2u(lsv, &i); |
1772 | sv_setiv(sv, i + PL_curcop->cop_arybase); |
a0d0e21e |
1773 | return 0; |
1774 | } |
1775 | } |
0c34ef67 |
1776 | SvOK_off(sv); |
a0d0e21e |
1777 | return 0; |
1778 | } |
1779 | |
1780 | int |
864dbfa3 |
1781 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1782 | { |
8772537c |
1783 | SV* const lsv = LvTARG(sv); |
a0d0e21e |
1784 | SSize_t pos; |
1785 | STRLEN len; |
c00206c8 |
1786 | STRLEN ulen = 0; |
a0d0e21e |
1787 | |
1788 | mg = 0; |
ac27b0f5 |
1789 | |
a0d0e21e |
1790 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
14befaf4 |
1791 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
a0d0e21e |
1792 | if (!mg) { |
1793 | if (!SvOK(sv)) |
1794 | return 0; |
fabdb6c0 |
1795 | sv_magic(lsv, NULL, PERL_MAGIC_regex_global, NULL, 0); |
14befaf4 |
1796 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
a0d0e21e |
1797 | } |
1798 | else if (!SvOK(sv)) { |
565764a8 |
1799 | mg->mg_len = -1; |
a0d0e21e |
1800 | return 0; |
1801 | } |
1802 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); |
1803 | |
c485e607 |
1804 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 |
1805 | |
7e2040f0 |
1806 | if (DO_UTF8(lsv)) { |
a0ed51b3 |
1807 | ulen = sv_len_utf8(lsv); |
1808 | if (ulen) |
1809 | len = ulen; |
a0ed51b3 |
1810 | } |
1811 | |
a0d0e21e |
1812 | if (pos < 0) { |
1813 | pos += len; |
1814 | if (pos < 0) |
1815 | pos = 0; |
1816 | } |
eb160463 |
1817 | else if (pos > (SSize_t)len) |
a0d0e21e |
1818 | pos = len; |
a0ed51b3 |
1819 | |
1820 | if (ulen) { |
1821 | I32 p = pos; |
1822 | sv_pos_u2b(lsv, &p, 0); |
1823 | pos = p; |
1824 | } |
727405f8 |
1825 | |
565764a8 |
1826 | mg->mg_len = pos; |
71be2cbc |
1827 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e |
1828 | |
79072805 |
1829 | return 0; |
1830 | } |
1831 | |
1832 | int |
864dbfa3 |
1833 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1834 | { |
8772537c |
1835 | PERL_UNUSED_ARG(mg); |
8646b087 |
1836 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1837 | SvFAKE_off(sv); |
946ec16e |
1838 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 |
1839 | SvFAKE_on(sv); |
1840 | } |
1841 | else |
946ec16e |
1842 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 |
1843 | return 0; |
1844 | } |
1845 | |
1846 | int |
864dbfa3 |
1847 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1848 | { |
79072805 |
1849 | GV* gv; |
8772537c |
1850 | PERL_UNUSED_ARG(mg); |
1851 | |
79072805 |
1852 | if (!SvOK(sv)) |
1853 | return 0; |
f776e3cd |
1854 | gv = gv_fetchsv(sv, GV_ADD, SVt_PVGV); |
79072805 |
1855 | if (sv == (SV*)gv) |
1856 | return 0; |
1857 | if (GvGP(sv)) |
88e89b8a |
1858 | gp_free((GV*)sv); |
79072805 |
1859 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 |
1860 | return 0; |
1861 | } |
1862 | |
1863 | int |
864dbfa3 |
1864 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 |
1865 | { |
1866 | STRLEN len; |
35a4481c |
1867 | SV * const lsv = LvTARG(sv); |
b83604b4 |
1868 | const char * const tmps = SvPV_const(lsv,len); |
6ff81951 |
1869 | I32 offs = LvTARGOFF(sv); |
1870 | I32 rem = LvTARGLEN(sv); |
8772537c |
1871 | PERL_UNUSED_ARG(mg); |
6ff81951 |
1872 | |
9aa983d2 |
1873 | if (SvUTF8(lsv)) |
1874 | sv_pos_u2b(lsv, &offs, &rem); |
eb160463 |
1875 | if (offs > (I32)len) |
6ff81951 |
1876 | offs = len; |
eb160463 |
1877 | if (rem + offs > (I32)len) |
6ff81951 |
1878 | rem = len - offs; |
1879 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); |
9aa983d2 |
1880 | if (SvUTF8(lsv)) |
2ef4b674 |
1881 | SvUTF8_on(sv); |
6ff81951 |
1882 | return 0; |
1883 | } |
1884 | |
1885 | int |
864dbfa3 |
1886 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1887 | { |
9aa983d2 |
1888 | STRLEN len; |
b83604b4 |
1889 | const char *tmps = SvPV_const(sv, len); |
dd374669 |
1890 | SV * const lsv = LvTARG(sv); |
9aa983d2 |
1891 | I32 lvoff = LvTARGOFF(sv); |
1892 | I32 lvlen = LvTARGLEN(sv); |
8772537c |
1893 | PERL_UNUSED_ARG(mg); |
075a4a2b |
1894 | |
1aa99e6b |
1895 | if (DO_UTF8(sv)) { |
9aa983d2 |
1896 | sv_utf8_upgrade(lsv); |
1897 | sv_pos_u2b(lsv, &lvoff, &lvlen); |
1898 | sv_insert(lsv, lvoff, lvlen, tmps, len); |
b76f3ce2 |
1899 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 |
1900 | SvUTF8_on(lsv); |
1901 | } |
9bf12eaf |
1902 | else if (lsv && SvUTF8(lsv)) { |
9aa983d2 |
1903 | sv_pos_u2b(lsv, &lvoff, &lvlen); |
b76f3ce2 |
1904 | LvTARGLEN(sv) = len; |
e95af362 |
1905 | tmps = (char*)bytes_to_utf8((U8*)tmps, &len); |
9aa983d2 |
1906 | sv_insert(lsv, lvoff, lvlen, tmps, len); |
1907 | Safefree(tmps); |
1aa99e6b |
1908 | } |
b76f3ce2 |
1909 | else { |
1910 | sv_insert(lsv, lvoff, lvlen, tmps, len); |
1911 | LvTARGLEN(sv) = len; |
1912 | } |
1913 | |
1aa99e6b |
1914 | |
79072805 |
1915 | return 0; |
1916 | } |
1917 | |
1918 | int |
864dbfa3 |
1919 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1920 | { |
8772537c |
1921 | PERL_UNUSED_ARG(sv); |
27cc343c |
1922 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 |
1923 | return 0; |
1924 | } |
1925 | |
1926 | int |
864dbfa3 |
1927 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1928 | { |
8772537c |
1929 | PERL_UNUSED_ARG(sv); |
0a9c116b |
1930 | /* update taint status unless we're restoring at scope exit */ |
1931 | if (PL_localizing != 2) { |
1932 | if (PL_tainted) |
1933 | mg->mg_len |= 1; |
1934 | else |
1935 | mg->mg_len &= ~1; |
1936 | } |
463ee0b2 |
1937 | return 0; |
1938 | } |
1939 | |
1940 | int |
864dbfa3 |
1941 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 |
1942 | { |
35a4481c |
1943 | SV * const lsv = LvTARG(sv); |
8772537c |
1944 | PERL_UNUSED_ARG(mg); |
6ff81951 |
1945 | |
1946 | if (!lsv) { |
0c34ef67 |
1947 | SvOK_off(sv); |
6ff81951 |
1948 | return 0; |
1949 | } |
6ff81951 |
1950 | |
81e118e0 |
1951 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 |
1952 | return 0; |
1953 | } |
1954 | |
1955 | int |
864dbfa3 |
1956 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1957 | { |
8772537c |
1958 | PERL_UNUSED_ARG(mg); |
79072805 |
1959 | do_vecset(sv); /* XXX slurp this routine */ |
1960 | return 0; |
1961 | } |
1962 | |
1963 | int |
864dbfa3 |
1964 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc |
1965 | { |
71be2cbc |
1966 | SV *targ = Nullsv; |
5f05dabc |
1967 | if (LvTARGLEN(sv)) { |
68dc0745 |
1968 | if (mg->mg_obj) { |
8772537c |
1969 | SV * const ahv = LvTARG(sv); |
1970 | HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); |
6d822dc4 |
1971 | if (he) |
1972 | targ = HeVAL(he); |
68dc0745 |
1973 | } |
1974 | else { |
8772537c |
1975 | AV* const av = (AV*)LvTARG(sv); |
68dc0745 |
1976 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1977 | targ = AvARRAY(av)[LvTARGOFF(sv)]; |
1978 | } |
3280af22 |
1979 | if (targ && targ != &PL_sv_undef) { |
68dc0745 |
1980 | /* somebody else defined it for us */ |
1981 | SvREFCNT_dec(LvTARG(sv)); |
1982 | LvTARG(sv) = SvREFCNT_inc(targ); |
1983 | LvTARGLEN(sv) = 0; |
1984 | SvREFCNT_dec(mg->mg_obj); |
1985 | mg->mg_obj = Nullsv; |
1986 | mg->mg_flags &= ~MGf_REFCOUNTED; |
1987 | } |
5f05dabc |
1988 | } |
71be2cbc |
1989 | else |
1990 | targ = LvTARG(sv); |
3280af22 |
1991 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc |
1992 | return 0; |
1993 | } |
1994 | |
1995 | int |
864dbfa3 |
1996 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc |
1997 | { |
8772537c |
1998 | PERL_UNUSED_ARG(mg); |
71be2cbc |
1999 | if (LvTARGLEN(sv)) |
68dc0745 |
2000 | vivify_defelem(sv); |
2001 | if (LvTARG(sv)) { |
5f05dabc |
2002 | sv_setsv(LvTARG(sv), sv); |
68dc0745 |
2003 | SvSETMAGIC(LvTARG(sv)); |
2004 | } |
5f05dabc |
2005 | return 0; |
2006 | } |
2007 | |
71be2cbc |
2008 | void |
864dbfa3 |
2009 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc |
2010 | { |
74e13ce4 |
2011 | MAGIC *mg; |
2012 | SV *value = Nullsv; |
71be2cbc |
2013 | |
14befaf4 |
2014 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc |
2015 | return; |
68dc0745 |
2016 | if (mg->mg_obj) { |
8772537c |
2017 | SV * const ahv = LvTARG(sv); |
2018 | HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
6d822dc4 |
2019 | if (he) |
2020 | value = HeVAL(he); |
3280af22 |
2021 | if (!value || value == &PL_sv_undef) |
ce5030a2 |
2022 | Perl_croak(aTHX_ PL_no_helem_sv, mg->mg_obj); |
71be2cbc |
2023 | } |
68dc0745 |
2024 | else { |
8772537c |
2025 | AV* const av = (AV*)LvTARG(sv); |
5aabfad6 |
2026 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 |
2027 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
2028 | else { |
aec46f14 |
2029 | SV** const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 |
2030 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 |
2031 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 |
2032 | } |
2033 | } |
3e3baf6d |
2034 | (void)SvREFCNT_inc(value); |
68dc0745 |
2035 | SvREFCNT_dec(LvTARG(sv)); |
2036 | LvTARG(sv) = value; |
71be2cbc |
2037 | LvTARGLEN(sv) = 0; |
68dc0745 |
2038 | SvREFCNT_dec(mg->mg_obj); |
2039 | mg->mg_obj = Nullsv; |
2040 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc |
2041 | } |
2042 | |
2043 | int |
864dbfa3 |
2044 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 |
2045 | { |
e15faf7d |
2046 | AV *const av = (AV*)mg->mg_obj; |
2047 | SV **svp = AvARRAY(av); |
8772537c |
2048 | PERL_UNUSED_ARG(sv); |
dd374669 |
2049 | |
0565a181 |
2050 | /* Not sure why the av can get freed ahead of its sv, but somehow it does |
2051 | in ext/B/t/bytecode.t test 15 (involving print <DATA>) */ |
2052 | if (svp && !SvIS_FREED(av)) { |
e15faf7d |
2053 | SV *const *const last = svp + AvFILLp(av); |
2054 | |
2055 | while (svp <= last) { |
2056 | if (*svp) { |
2057 | SV *const referrer = *svp; |
2058 | if (SvWEAKREF(referrer)) { |
2059 | /* XXX Should we check that it hasn't changed? */ |
2060 | SvRV_set(referrer, 0); |
2061 | SvOK_off(referrer); |
2062 | SvWEAKREF_off(referrer); |
2063 | } else if (SvTYPE(referrer) == SVt_PVGV || |
2064 | SvTYPE(referrer) == SVt_PVLV) { |
2065 | /* You lookin' at me? */ |
2066 | assert(GvSTASH(referrer)); |
2067 | assert(GvSTASH(referrer) == (HV*)sv); |
2068 | GvSTASH(referrer) = 0; |
2069 | } else { |
2070 | Perl_croak(aTHX_ |
2071 | "panic: magic_killbackrefs (flags=%"UVxf")", |
e91e3b10 |
2072 | (UV)SvFLAGS(referrer)); |
e15faf7d |
2073 | } |
2074 | |
2075 | *svp = Nullsv; |
2076 | } |
2077 | svp++; |
810b8aa5 |
2078 | } |
810b8aa5 |
2079 | } |
d99b02a1 |
2080 | SvREFCNT_dec(av); /* remove extra count added by sv_add_backref() */ |
810b8aa5 |
2081 | return 0; |
2082 | } |
2083 | |
2084 | int |
864dbfa3 |
2085 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 |
2086 | { |
565764a8 |
2087 | mg->mg_len = -1; |
c6496cc7 |
2088 | SvSCREAM_off(sv); |
93a17b20 |
2089 | return 0; |
2090 | } |
2091 | |
2092 | int |
864dbfa3 |
2093 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
2094 | { |
8772537c |
2095 | PERL_UNUSED_ARG(mg); |
14befaf4 |
2096 | sv_unmagic(sv, PERL_MAGIC_bm); |
79072805 |
2097 | SvVALID_off(sv); |
2098 | return 0; |
2099 | } |
2100 | |
2101 | int |
864dbfa3 |
2102 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff |
2103 | { |
8772537c |
2104 | PERL_UNUSED_ARG(mg); |
14befaf4 |
2105 | sv_unmagic(sv, PERL_MAGIC_fm); |
55497cff |
2106 | SvCOMPILED_off(sv); |
2107 | return 0; |
2108 | } |
2109 | |
2110 | int |
864dbfa3 |
2111 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
2112 | { |
35a4481c |
2113 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 |
2114 | |
2115 | if (uf && uf->uf_set) |
24f81a43 |
2116 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 |
2117 | return 0; |
2118 | } |
2119 | |
c277df42 |
2120 | int |
faf82a0b |
2121 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2122 | { |
8772537c |
2123 | PERL_UNUSED_ARG(mg); |
faf82a0b |
2124 | sv_unmagic(sv, PERL_MAGIC_qr); |
2125 | return 0; |
2126 | } |
2127 | |
2128 | int |
864dbfa3 |
2129 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 |
2130 | { |
8772537c |
2131 | regexp * const re = (regexp *)mg->mg_obj; |
2132 | PERL_UNUSED_ARG(sv); |
2133 | |
c277df42 |
2134 | ReREFCNT_dec(re); |
2135 | return 0; |
2136 | } |
2137 | |
7a4c00b4 |
2138 | #ifdef USE_LOCALE_COLLATE |
79072805 |
2139 | int |
864dbfa3 |
2140 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 |
2141 | { |
2142 | /* |
838b5b74 |
2143 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 |
2144 | * and vanished with a faint plop. |
2145 | */ |
8772537c |
2146 | PERL_UNUSED_ARG(sv); |
7a4c00b4 |
2147 | if (mg->mg_ptr) { |
2148 | Safefree(mg->mg_ptr); |
2149 | mg->mg_ptr = NULL; |
565764a8 |
2150 | mg->mg_len = -1; |
7a4c00b4 |
2151 | } |
bbce6d69 |
2152 | return 0; |
2153 | } |
7a4c00b4 |
2154 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 |
2155 | |
7e8c5dac |
2156 | /* Just clear the UTF-8 cache data. */ |
2157 | int |
2158 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) |
2159 | { |
8772537c |
2160 | PERL_UNUSED_ARG(sv); |
7e8c5dac |
2161 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
2162 | mg->mg_ptr = 0; |
2163 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2164 | return 0; |
2165 | } |
2166 | |
bbce6d69 |
2167 | int |
864dbfa3 |
2168 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
2169 | { |
e1ec3a88 |
2170 | register const char *s; |
79072805 |
2171 | I32 i; |
8990e307 |
2172 | STRLEN len; |
79072805 |
2173 | switch (*mg->mg_ptr) { |
748a9306 |
2174 | case '\001': /* ^A */ |
3280af22 |
2175 | sv_setsv(PL_bodytarget, sv); |
748a9306 |
2176 | break; |
49460fe6 |
2177 | case '\003': /* ^C */ |
eb160463 |
2178 | PL_minus_c = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
49460fe6 |
2179 | break; |
2180 | |
79072805 |
2181 | case '\004': /* ^D */ |
b4ab917c |
2182 | #ifdef DEBUGGING |
b83604b4 |
2183 | s = SvPV_nolen_const(sv); |
ddcf8bc1 |
2184 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
79072805 |
2185 | DEBUG_x(dump_all()); |
b4ab917c |
2186 | #else |
2187 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | DEBUG_TOP_FLAG; |
2188 | #endif |
79072805 |
2189 | break; |
28f23441 |
2190 | case '\005': /* ^E */ |
d0063567 |
2191 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 |
2192 | #ifdef MACOS_TRADITIONAL |
d0063567 |
2193 | gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
28f23441 |
2194 | #else |
cd39f2b6 |
2195 | # ifdef VMS |
d0063567 |
2196 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
048c1ddf |
2197 | # else |
cd39f2b6 |
2198 | # ifdef WIN32 |
d0063567 |
2199 | SetLastError( SvIV(sv) ); |
cd39f2b6 |
2200 | # else |
9fed8b87 |
2201 | # ifdef OS2 |
d0063567 |
2202 | os2_setsyserrno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
9fed8b87 |
2203 | # else |
d0063567 |
2204 | /* will anyone ever use this? */ |
2205 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); |
cd39f2b6 |
2206 | # endif |
048c1ddf |
2207 | # endif |
2208 | # endif |
22fae026 |
2209 | #endif |
d0063567 |
2210 | } |
2211 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { |
2212 | if (PL_encoding) |
2213 | SvREFCNT_dec(PL_encoding); |
2214 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2215 | PL_encoding = newSVsv(sv); |
2216 | } |
2217 | else { |
2218 | PL_encoding = Nullsv; |
2219 | } |
2220 | } |
2221 | break; |
79072805 |
2222 | case '\006': /* ^F */ |
3280af22 |
2223 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
2224 | break; |
a0d0e21e |
2225 | case '\010': /* ^H */ |
3280af22 |
2226 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e |
2227 | break; |
9d116dd7 |
2228 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d |
2229 | Safefree(PL_inplace); |
2230 | PL_inplace = SvOK(sv) ? savesvpv(sv) : Nullch; |
da78da6e |
2231 | break; |
28f23441 |
2232 | case '\017': /* ^O */ |
ac27b0f5 |
2233 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d |
2234 | Safefree(PL_osname); |
2235 | PL_osname = Nullch; |
3511154c |
2236 | if (SvOK(sv)) { |
2237 | TAINT_PROPER("assigning to $^O"); |
2e0de35c |
2238 | PL_osname = savesvpv(sv); |
3511154c |
2239 | } |
ac27b0f5 |
2240 | } |
2241 | else if (strEQ(mg->mg_ptr, "\017PEN")) { |
2242 | if (!PL_compiling.cop_io) |
2243 | PL_compiling.cop_io = newSVsv(sv); |
2244 | else |
2245 | sv_setsv(PL_compiling.cop_io,sv); |
2246 | } |
28f23441 |
2247 | break; |
79072805 |
2248 | case '\020': /* ^P */ |
3280af22 |
2249 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
f2a7f298 |
2250 | if (PL_perldb && !PL_DBsingle) |
1ee4443e |
2251 | init_debugger(); |
79072805 |
2252 | break; |
2253 | case '\024': /* ^T */ |
88e89b8a |
2254 | #ifdef BIG_TIME |
6b88bc9c |
2255 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a |
2256 | #else |
3280af22 |
2257 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a |
2258 | #endif |
79072805 |
2259 | break; |
fde18df1 |
2260 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 |
2261 | if (*(mg->mg_ptr+1) == '\0') { |
2262 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
2263 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
ac27b0f5 |
2264 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 |
2265 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 |
2266 | } |
599cee73 |
2267 | } |
0a378802 |
2268 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 |
2269 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e |
2270 | if (!SvPOK(sv) && PL_localizing) { |
2271 | sv_setpvn(sv, WARN_NONEstring, WARNsize); |
d3a7d8c7 |
2272 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e |
2273 | break; |
2274 | } |
f4fc7782 |
2275 | { |
b5477537 |
2276 | STRLEN len, i; |
d3a7d8c7 |
2277 | int accumulate = 0 ; |
f4fc7782 |
2278 | int any_fatals = 0 ; |
b83604b4 |
2279 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 |
2280 | for (i = 0 ; i < len ; ++i) { |
2281 | accumulate |= ptr[i] ; |
2282 | any_fatals |= (ptr[i] & 0xAA) ; |
2283 | } |
d3a7d8c7 |
2284 | if (!accumulate) |
2285 | PL_compiling.cop_warnings = pWARN_NONE; |
f4fc7782 |
2286 | else if (isWARN_on(sv, WARN_ALL) && !any_fatals) { |
2287 | PL_compiling.cop_warnings = pWARN_ALL; |
2288 | PL_dowarn |= G_WARN_ONCE ; |
727405f8 |
2289 | } |
d3a7d8c7 |
2290 | else { |
2291 | if (specialWARN(PL_compiling.cop_warnings)) |
2292 | PL_compiling.cop_warnings = newSVsv(sv) ; |
2293 | else |
2294 | sv_setsv(PL_compiling.cop_warnings, sv); |
2295 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2296 | PL_dowarn |= G_WARN_ONCE ; |
2297 | } |
f4fc7782 |
2298 | |
d3a7d8c7 |
2299 | } |
4438c4b7 |
2300 | } |
971a9dd3 |
2301 | } |
79072805 |
2302 | break; |
2303 | case '.': |
3280af22 |
2304 | if (PL_localizing) { |
2305 | if (PL_localizing == 1) |
7766f137 |
2306 | SAVESPTR(PL_last_in_gv); |
748a9306 |
2307 | } |
3280af22 |
2308 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 |
2309 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 |
2310 | break; |
2311 | case '^': |
3280af22 |
2312 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 |
2313 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
f776e3cd |
2314 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); |
79072805 |
2315 | break; |
2316 | case '~': |
3280af22 |
2317 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 |
2318 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
f776e3cd |
2319 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); |
79072805 |
2320 | break; |
2321 | case '=': |
632db599 |
2322 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
2323 | break; |
2324 | case '-': |
632db599 |
2325 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
3280af22 |
2326 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
2327 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 |
2328 | break; |
2329 | case '%': |
632db599 |
2330 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
2331 | break; |
2332 | case '|': |
4b65379b |
2333 | { |
8772537c |
2334 | IO * const io = GvIOp(PL_defoutgv); |
720f287d |
2335 | if(!io) |
2336 | break; |
4b65379b |
2337 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
2338 | IoFLAGS(io) &= ~IOf_FLUSH; |
2339 | else { |
2340 | if (!(IoFLAGS(io) & IOf_FLUSH)) { |
2341 | PerlIO *ofp = IoOFP(io); |
2342 | if (ofp) |
2343 | (void)PerlIO_flush(ofp); |
2344 | IoFLAGS(io) |= IOf_FLUSH; |
2345 | } |
2346 | } |
79072805 |
2347 | } |
2348 | break; |
79072805 |
2349 | case '/': |
3280af22 |
2350 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 |
2351 | PL_rs = newSVsv(sv); |
79072805 |
2352 | break; |
2353 | case '\\': |
7889fe52 |
2354 | if (PL_ors_sv) |
2355 | SvREFCNT_dec(PL_ors_sv); |
009c130f |
2356 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 |
2357 | PL_ors_sv = newSVsv(sv); |
009c130f |
2358 | } |
e3c19b7b |
2359 | else { |
7889fe52 |
2360 | PL_ors_sv = Nullsv; |
e3c19b7b |
2361 | } |
79072805 |
2362 | break; |
2363 | case ',': |
7889fe52 |
2364 | if (PL_ofs_sv) |
2365 | SvREFCNT_dec(PL_ofs_sv); |
2366 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2367 | PL_ofs_sv = newSVsv(sv); |
2368 | } |
2369 | else { |
2370 | PL_ofs_sv = Nullsv; |
2371 | } |
79072805 |
2372 | break; |
79072805 |
2373 | case '[': |
3280af22 |
2374 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
2375 | break; |
2376 | case '?': |
ff0cee69 |
2377 | #ifdef COMPLEX_STATUS |
6b88bc9c |
2378 | if (PL_localizing == 2) { |
2379 | PL_statusvalue = LvTARGOFF(sv); |
2380 | PL_statusvalue_vms = LvTARGLEN(sv); |
ff0cee69 |
2381 | } |
2382 | else |
2383 | #endif |
2384 | #ifdef VMSISH_STATUS |
2385 | if (VMSISH_STATUS) |
fb38d079 |
2386 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 |
2387 | else |
2388 | #endif |
fb38d079 |
2389 | STATUS_UNIX_EXIT_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
2390 | break; |
2391 | case '!': |
93189314 |
2392 | { |
2393 | #ifdef VMS |
2394 | # define PERL_VMS_BANG vaxc$errno |
2395 | #else |
2396 | # define PERL_VMS_BANG 0 |
2397 | #endif |
91487cfc |
2398 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 |
2399 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2400 | } |
79072805 |
2401 | break; |
2402 | case '<': |
3280af22 |
2403 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2404 | if (PL_delaymagic) { |
2405 | PL_delaymagic |= DM_RUID; |
79072805 |
2406 | break; /* don't do magic till later */ |
2407 | } |
2408 | #ifdef HAS_SETRUID |
b28d0864 |
2409 | (void)setruid((Uid_t)PL_uid); |
79072805 |
2410 | #else |
2411 | #ifdef HAS_SETREUID |
3280af22 |
2412 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 |
2413 | #else |
85e6fe83 |
2414 | #ifdef HAS_SETRESUID |
b28d0864 |
2415 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 |
2416 | #else |
75870ed3 |
2417 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2418 | #ifdef PERL_DARWIN |
2419 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ |
2420 | if (PL_uid != 0 && PerlProc_getuid() == 0) |
2421 | (void)PerlProc_setuid(0); |
2422 | #endif |
b28d0864 |
2423 | (void)PerlProc_setuid(PL_uid); |
75870ed3 |
2424 | } else { |
d8eceb89 |
2425 | PL_uid = PerlProc_getuid(); |
cea2e8a9 |
2426 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e |
2427 | } |
79072805 |
2428 | #endif |
2429 | #endif |
85e6fe83 |
2430 | #endif |
d8eceb89 |
2431 | PL_uid = PerlProc_getuid(); |
3280af22 |
2432 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
2433 | break; |
2434 | case '>': |
3280af22 |
2435 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2436 | if (PL_delaymagic) { |
2437 | PL_delaymagic |= DM_EUID; |
79072805 |
2438 | break; /* don't do magic till later */ |
2439 | } |
2440 | #ifdef HAS_SETEUID |
3280af22 |
2441 | (void)seteuid((Uid_t)PL_euid); |
79072805 |
2442 | #else |
2443 | #ifdef HAS_SETREUID |
b28d0864 |
2444 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 |
2445 | #else |
2446 | #ifdef HAS_SETRESUID |
6b88bc9c |
2447 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 |
2448 | #else |
b28d0864 |
2449 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2450 | PerlProc_setuid(PL_euid); |
a0d0e21e |
2451 | else { |
e8ee3774 |
2452 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 |
2453 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e |
2454 | } |
79072805 |
2455 | #endif |
2456 | #endif |
85e6fe83 |
2457 | #endif |
d8eceb89 |
2458 | PL_euid = PerlProc_geteuid(); |
3280af22 |
2459 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
2460 | break; |
2461 | case '(': |
3280af22 |
2462 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2463 | if (PL_delaymagic) { |
2464 | PL_delaymagic |= DM_RGID; |
79072805 |
2465 | break; /* don't do magic till later */ |
2466 | } |
2467 | #ifdef HAS_SETRGID |
b28d0864 |
2468 | (void)setrgid((Gid_t)PL_gid); |
79072805 |
2469 | #else |
2470 | #ifdef HAS_SETREGID |
3280af22 |
2471 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 |
2472 | #else |
2473 | #ifdef HAS_SETRESGID |
b28d0864 |
2474 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 |
2475 | #else |
b28d0864 |
2476 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2477 | (void)PerlProc_setgid(PL_gid); |
748a9306 |
2478 | else { |
d8eceb89 |
2479 | PL_gid = PerlProc_getgid(); |
cea2e8a9 |
2480 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 |
2481 | } |
79072805 |
2482 | #endif |
2483 | #endif |
85e6fe83 |
2484 | #endif |
d8eceb89 |
2485 | PL_gid = PerlProc_getgid(); |
3280af22 |
2486 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
2487 | break; |
2488 | case ')': |
5cd24f17 |
2489 | #ifdef HAS_SETGROUPS |
2490 | { |
b83604b4 |
2491 | const char *p = SvPV_const(sv, len); |
757f63d8 |
2492 | Groups_t *gary = NULL; |
2493 | |
2494 | while (isSPACE(*p)) |
2495 | ++p; |
2496 | PL_egid = Atol(p); |
2497 | for (i = 0; i < NGROUPS; ++i) { |
2498 | while (*p && !isSPACE(*p)) |
2499 | ++p; |
2500 | while (isSPACE(*p)) |
2501 | ++p; |
2502 | if (!*p) |
2503 | break; |
2504 | if(!gary) |
2505 | Newx(gary, i + 1, Groups_t); |
2506 | else |
2507 | Renew(gary, i + 1, Groups_t); |
2508 | gary[i] = Atol(p); |
2509 | } |
2510 | if (i) |
2511 | (void)setgroups(i, gary); |
2512 | if (gary) |
2513 | Safefree(gary); |
5cd24f17 |
2514 | } |
2515 | #else /* HAS_SETGROUPS */ |
b28d0864 |
2516 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 |
2517 | #endif /* HAS_SETGROUPS */ |
3280af22 |
2518 | if (PL_delaymagic) { |
2519 | PL_delaymagic |= DM_EGID; |
79072805 |
2520 | break; /* don't do magic till later */ |
2521 | } |
2522 | #ifdef HAS_SETEGID |
3280af22 |
2523 | (void)setegid((Gid_t)PL_egid); |
79072805 |
2524 | #else |
2525 | #ifdef HAS_SETREGID |
b28d0864 |
2526 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 |
2527 | #else |
2528 | #ifdef HAS_SETRESGID |
b28d0864 |
2529 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 |
2530 | #else |
b28d0864 |
2531 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2532 | (void)PerlProc_setgid(PL_egid); |
748a9306 |
2533 | else { |
d8eceb89 |
2534 | PL_egid = PerlProc_getegid(); |
cea2e8a9 |
2535 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 |
2536 | } |
79072805 |
2537 | #endif |
2538 | #endif |
85e6fe83 |
2539 | #endif |
d8eceb89 |
2540 | PL_egid = PerlProc_getegid(); |
3280af22 |
2541 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
2542 | break; |
2543 | case ':': |
2d8e6c8d |
2544 | PL_chopset = SvPV_force(sv,len); |
79072805 |
2545 | break; |
cd39f2b6 |
2546 | #ifndef MACOS_TRADITIONAL |
79072805 |
2547 | case '0': |
e2975953 |
2548 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 |
2549 | #ifdef HAS_SETPROCTITLE |
2550 | /* The BSDs don't show the argv[] in ps(1) output, they |
2551 | * show a string from the process struct and provide |
2552 | * the setproctitle() routine to manipulate that. */ |
2553 | { |
b83604b4 |
2554 | s = SvPV_const(sv, len); |
98b76f99 |
2555 | # if __FreeBSD_version > 410001 |
9aad2c0e |
2556 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 |
2557 | * but not the "(perl) suffix from the ps(1) |
2558 | * output, because that's what ps(1) shows if the |
2559 | * argv[] is modified. */ |
6f2ad931 |
2560 | setproctitle("-%s", s); |
9aad2c0e |
2561 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 |
2562 | /* This doesn't really work if you assume that |
2563 | * $0 = 'foobar'; will wipe out 'perl' from the $0 |
2564 | * because in ps(1) output the result will be like |
2565 | * sprintf("perl: %s (perl)", s) |
2566 | * I guess this is a security feature: |
2567 | * one (a user process) cannot get rid of the original name. |
2568 | * --jhi */ |
2569 | setproctitle("%s", s); |
2570 | # endif |
2571 | } |
2572 | #endif |
17aa7f3d |
2573 | #if defined(__hpux) && defined(PSTAT_SETCMD) |
2574 | { |
2575 | union pstun un; |
b83604b4 |
2576 | s = SvPV_const(sv, len); |
6867be6d |
2577 | un.pst_command = (char *)s; |
17aa7f3d |
2578 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2579 | } |
2580 | #endif |
3cb9023d |
2581 | /* PL_origalen is set in perl_parse(). */ |
a0d0e21e |
2582 | s = SvPV_force(sv,len); |
6f698202 |
2583 | if (len >= (STRLEN)PL_origalen-1) { |
2584 | /* Longer than original, will be truncated. We assume that |
2585 | * PL_origalen bytes are available. */ |
2586 | Copy(s, PL_origargv[0], PL_origalen-1, char); |
79072805 |
2587 | } |
2588 | else { |
54bfe034 |
2589 | /* Shorter than original, will be padded. */ |
2590 | Copy(s, PL_origargv[0], len, char); |
2591 | PL_origargv[0][len] = 0; |
2592 | memset(PL_origargv[0] + len + 1, |
2593 | /* Is the space counterintuitive? Yes. |
2594 | * (You were expecting \0?) |
3cb9023d |
2595 | * Does it work? Seems to. (In Linux 2.4.20 at least.) |
54bfe034 |
2596 | * --jhi */ |
2597 | (int)' ', |
2598 | PL_origalen - len - 1); |
79072805 |
2599 | } |
ad7eccf4 |
2600 | PL_origargv[0][PL_origalen-1] = 0; |
2601 | for (i = 1; i < PL_origargc; i++) |
2602 | PL_origargv[i] = 0; |
e2975953 |
2603 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 |
2604 | break; |
cd39f2b6 |
2605 | #endif |
79072805 |
2606 | } |
2607 | return 0; |
2608 | } |
2609 | |
2610 | I32 |
35a4481c |
2611 | Perl_whichsig(pTHX_ const char *sig) |
79072805 |
2612 | { |
aadb217d |
2613 | register char* const* sigv; |
79072805 |
2614 | |
aadb217d |
2615 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
79072805 |
2616 | if (strEQ(sig,*sigv)) |
aadb217d |
2617 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 |
2618 | #ifdef SIGCLD |
2619 | if (strEQ(sig,"CHLD")) |
2620 | return SIGCLD; |
2621 | #endif |
2622 | #ifdef SIGCHLD |
2623 | if (strEQ(sig,"CLD")) |
2624 | return SIGCHLD; |
2625 | #endif |
7f1236c0 |
2626 | return -1; |
79072805 |
2627 | } |
2628 | |
ecfc5424 |
2629 | Signal_t |
1e82f5a6 |
2630 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
8aad04aa |
2631 | Perl_sighandler(int sig, ...) |
1e82f5a6 |
2632 | #else |
2633 | Perl_sighandler(int sig) |
2634 | #endif |
79072805 |
2635 | { |
1018e26f |
2636 | #ifdef PERL_GET_SIG_CONTEXT |
2637 | dTHXa(PERL_GET_SIG_CONTEXT); |
71d280e3 |
2638 | #else |
cea2e8a9 |
2639 | dTHX; |
71d280e3 |
2640 | #endif |
79072805 |
2641 | dSP; |
00d579c5 |
2642 | GV *gv = Nullgv; |
8772537c |
2643 | SV *sv = Nullsv; |
2644 | SV * const tSv = PL_Sv; |
00d579c5 |
2645 | CV *cv = Nullcv; |
533c011a |
2646 | OP *myop = PL_op; |
84902520 |
2647 | U32 flags = 0; |
8772537c |
2648 | XPV * const tXpv = PL_Xpv; |
71d280e3 |
2649 | |
3280af22 |
2650 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 |
2651 | flags |= 1; |
3280af22 |
2652 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 |
2653 | flags |= 4; |
3280af22 |
2654 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 |
2655 | flags |= 16; |
2656 | |
727405f8 |
2657 | if (!PL_psig_ptr[sig]) { |
99ef548b |
2658 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 |
2659 | PL_sig_name[sig]); |
2660 | exit(sig); |
2661 | } |
ff0cee69 |
2662 | |
84902520 |
2663 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2664 | infinity, so we fix 4 (in fact 5): */ |
2665 | if (flags & 1) { |
3280af22 |
2666 | PL_savestack_ix += 5; /* Protect save in progress. */ |
8772537c |
2667 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, (void*)&flags); |
84902520 |
2668 | } |
ac27b0f5 |
2669 | if (flags & 4) |
3280af22 |
2670 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 |
2671 | if (flags & 16) |
3280af22 |
2672 | PL_scopestack_ix += 1; |
84902520 |
2673 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ac27b0f5 |
2674 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
8772537c |
2675 | || SvTYPE(cv) != SVt_PVCV) { |
2676 | HV *st; |
f2c0649b |
2677 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c |
2678 | } |
84902520 |
2679 | |
a0d0e21e |
2680 | if (!cv || !CvROOT(cv)) { |
599cee73 |
2681 | if (ckWARN(WARN_SIGNAL)) |
9014280d |
2682 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
22c35a8c |
2683 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 |
2684 | : ((cv && CvGV(cv)) |
2685 | ? GvENAME(CvGV(cv)) |
2686 | : "__ANON__"))); |
2687 | goto cleanup; |
79072805 |
2688 | } |
2689 | |
22c35a8c |
2690 | if(PL_psig_name[sig]) { |
2691 | sv = SvREFCNT_inc(PL_psig_name[sig]); |
84902520 |
2692 | flags |= 64; |
df3728a2 |
2693 | #if !defined(PERL_IMPLICIT_CONTEXT) |
27da23d5 |
2694 | PL_sig_sv = sv; |
df3728a2 |
2695 | #endif |
84902520 |
2696 | } else { |
ff0cee69 |
2697 | sv = sv_newmortal(); |
22c35a8c |
2698 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a |
2699 | } |
e336de0d |
2700 | |
e788e7d3 |
2701 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 |
2702 | PUSHMARK(SP); |
79072805 |
2703 | PUSHs(sv); |
8aad04aa |
2704 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
2705 | { |
2706 | struct sigaction oact; |
2707 | |
2708 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { |
2709 | siginfo_t *sip; |
2710 | va_list args; |
2711 | |
2712 | va_start(args, sig); |
2713 | sip = (siginfo_t*)va_arg(args, siginfo_t*); |
2714 | if (sip) { |
2715 | HV *sih = newHV(); |
2716 | SV *rv = newRV_noinc((SV*)sih); |
2717 | /* The siginfo fields signo, code, errno, pid, uid, |
2718 | * addr, status, and band are defined by POSIX/SUSv3. */ |
2719 | hv_store(sih, "signo", 5, newSViv(sip->si_signo), 0); |
2720 | hv_store(sih, "code", 4, newSViv(sip->si_code), 0); |
79dec0f4 |
2721 | #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. */ |
ea1bde16 |
2722 | hv_store(sih, "errno", 5, newSViv(sip->si_errno), 0); |
79dec0f4 |
2723 | hv_store(sih, "status", 6, newSViv(sip->si_status), 0); |
8aad04aa |
2724 | hv_store(sih, "uid", 3, newSViv(sip->si_uid), 0); |
2725 | hv_store(sih, "pid", 3, newSViv(sip->si_pid), 0); |
2726 | hv_store(sih, "addr", 4, newSVuv(PTR2UV(sip->si_addr)), 0); |
8aad04aa |
2727 | hv_store(sih, "band", 4, newSViv(sip->si_band), 0); |
79dec0f4 |
2728 | #endif |
8aad04aa |
2729 | EXTEND(SP, 2); |
2730 | PUSHs((SV*)rv); |
2731 | PUSHs(newSVpv((void*)sip, sizeof(*sip))); |
2732 | } |
b4552a27 |
2733 | |
31427afe |
2734 | va_end(args); |
8aad04aa |
2735 | } |
2736 | } |
2737 | #endif |
79072805 |
2738 | PUTBACK; |
a0d0e21e |
2739 | |
1b266415 |
2740 | call_sv((SV*)cv, G_DISCARD|G_EVAL); |
79072805 |
2741 | |
d3acc0f7 |
2742 | POPSTACK; |
1b266415 |
2743 | if (SvTRUE(ERRSV)) { |
1d615522 |
2744 | #ifndef PERL_MICRO |
983dbef6 |
2745 | #ifdef HAS_SIGPROCMASK |
1b266415 |
2746 | /* Handler "died", for example to get out of a restart-able read(). |
2747 | * Before we re-do that on its behalf re-enable the signal which was |
2748 | * blocked by the system when we entered. |
2749 | */ |
2750 | sigset_t set; |
2751 | sigemptyset(&set); |
2752 | sigaddset(&set,sig); |
2753 | sigprocmask(SIG_UNBLOCK, &set, NULL); |
2754 | #else |
2755 | /* Not clear if this will work */ |
2756 | (void)rsignal(sig, SIG_IGN); |
5c1546dc |
2757 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 |
2758 | #endif |
1d615522 |
2759 | #endif /* !PERL_MICRO */ |
c3bdd826 |
2760 | Perl_die(aTHX_ Nullch); |
1b266415 |
2761 | } |
00d579c5 |
2762 | cleanup: |
84902520 |
2763 | if (flags & 1) |
3280af22 |
2764 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 |
2765 | if (flags & 4) |
3280af22 |
2766 | PL_markstack_ptr--; |
84902520 |
2767 | if (flags & 16) |
3280af22 |
2768 | PL_scopestack_ix -= 1; |
84902520 |
2769 | if (flags & 64) |
2770 | SvREFCNT_dec(sv); |
533c011a |
2771 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 |
2772 | |
3280af22 |
2773 | PL_Sv = tSv; /* Restore global temporaries. */ |
2774 | PL_Xpv = tXpv; |
53bb94e2 |
2775 | return; |
79072805 |
2776 | } |
4e35701f |
2777 | |
2778 | |
51371543 |
2779 | static void |
8772537c |
2780 | S_restore_magic(pTHX_ const void *p) |
51371543 |
2781 | { |
8772537c |
2782 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
2783 | SV* const sv = mgs->mgs_sv; |
51371543 |
2784 | |
2785 | if (!sv) |
2786 | return; |
2787 | |
2788 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) |
2789 | { |
f8c7b90f |
2790 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 |
2791 | /* While magic was saved (and off) sv_setsv may well have seen |
2792 | this SV as a prime candidate for COW. */ |
2793 | if (SvIsCOW(sv)) |
e424a81e |
2794 | sv_force_normal_flags(sv, 0); |
f9701176 |
2795 | #endif |
2796 | |
51371543 |
2797 | if (mgs->mgs_flags) |
2798 | SvFLAGS(sv) |= mgs->mgs_flags; |
2799 | else |
2800 | mg_magical(sv); |
2b77b520 |
2801 | if (SvGMAGICAL(sv)) { |
2802 | /* downgrade public flags to private, |
2803 | and discard any other private flags */ |
2804 | |
2805 | U32 public = SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK); |
2806 | if (public) { |
2807 | SvFLAGS(sv) &= ~( public | SVp_IOK|SVp_NOK|SVp_POK ); |
2808 | SvFLAGS(sv) |= ( public << PRIVSHIFT ); |
2809 | } |
2810 | } |
51371543 |
2811 | } |
2812 | |
2813 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
2814 | |
2815 | /* If we're still on top of the stack, pop us off. (That condition |
2816 | * will be satisfied if restore_magic was called explicitly, but *not* |
2817 | * if it's being called via leave_scope.) |
2818 | * The reason for doing this is that otherwise, things like sv_2cv() |
2819 | * may leave alloc gunk on the savestack, and some code |
2820 | * (e.g. sighandler) doesn't expect that... |
2821 | */ |
2822 | if (PL_savestack_ix == mgs->mgs_ss_ix) |
2823 | { |
2824 | I32 popval = SSPOPINT; |
c76ac1ee |
2825 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 |
2826 | PL_savestack_ix -= 2; |
2827 | popval = SSPOPINT; |
2828 | assert(popval == SAVEt_ALLOC); |
2829 | popval = SSPOPINT; |
2830 | PL_savestack_ix -= popval; |
2831 | } |
2832 | |
2833 | } |
2834 | |
2835 | static void |
8772537c |
2836 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 |
2837 | { |
27da23d5 |
2838 | dVAR; |
e1ec3a88 |
2839 | const U32 flags = *(const U32*)p; |
51371543 |
2840 | |
2841 | if (flags & 1) |
2842 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
df3728a2 |
2843 | #if !defined(PERL_IMPLICIT_CONTEXT) |
51371543 |
2844 | if (flags & 64) |
27da23d5 |
2845 | SvREFCNT_dec(PL_sig_sv); |
df3728a2 |
2846 | #endif |
51371543 |
2847 | } |
1018e26f |
2848 | |
66610fdd |
2849 | /* |
2850 | * Local variables: |
2851 | * c-indentation-style: bsd |
2852 | * c-basic-offset: 4 |
2853 | * indent-tabs-mode: t |
2854 | * End: |
2855 | * |
37442d52 |
2856 | * ex: set ts=8 sts=4 sw=4 noet: |
2857 | */ |