Commit | Line | Data |
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a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
7272f7c1 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
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 LW |
14 | */ |
15 | ||
ccfc67b7 JH |
16 | /* |
17 | =head1 Magical Functions | |
166f8a29 DM |
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 DM |
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 DM |
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 JH |
36 | */ |
37 | ||
79072805 | 38 | #include "EXTERN.h" |
864dbfa3 | 39 | #define PERL_IN_MG_C |
79072805 LW |
40 | #include "perl.h" |
41 | ||
5cd24f17 | 42 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
b7953727 JH |
43 | # ifdef I_GRP |
44 | # include <grp.h> | |
45 | # endif | |
188ea221 CS |
46 | #endif |
47 | ||
757f63d8 SP |
48 | #if defined(HAS_SETGROUPS) |
49 | # ifndef NGROUPS | |
50 | # define NGROUPS 32 | |
51 | # endif | |
52 | #endif | |
53 | ||
17aa7f3d JH |
54 | #ifdef __hpux |
55 | # include <sys/pstat.h> | |
56 | #endif | |
57 | ||
8aad04aa | 58 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 59 | Signal_t Perl_csighandler(int sig, siginfo_t *, void *); |
8aad04aa | 60 | #else |
e69880a5 | 61 | Signal_t Perl_csighandler(int sig); |
8aad04aa | 62 | #endif |
e69880a5 | 63 | |
9cffb111 OS |
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 PP |
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 GS |
82 | |
83 | STATIC void | |
8fb26106 | 84 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 85 | { |
97aff369 | 86 | dVAR; |
455ece5e | 87 | MGS* mgs; |
7918f24d NC |
88 | |
89 | PERL_ARGS_ASSERT_SAVE_MAGIC; | |
90 | ||
c07a80fd | 91 | assert(SvMAGICAL(sv)); |
d8b2590f NC |
92 | /* Turning READONLY off for a copy-on-write scalar (including shared |
93 | hash keys) is a bad idea. */ | |
765f542d | 94 | if (SvIsCOW(sv)) |
9a265e59 | 95 | sv_force_normal_flags(sv, 0); |
c07a80fd | 96 | |
8772537c | 97 | SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
98 | |
99 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd PP |
100 | mgs->mgs_sv = sv; |
101 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); | |
455ece5e | 102 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd PP |
103 | |
104 | SvMAGICAL_off(sv); | |
105 | SvREADONLY_off(sv); | |
085bde85 NC |
106 | if (!(SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK))) { |
107 | /* No public flags are set, so promote any private flags to public. */ | |
108 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; | |
109 | } | |
c07a80fd PP |
110 | } |
111 | ||
954c1994 GS |
112 | /* |
113 | =for apidoc mg_magical | |
114 | ||
115 | Turns on the magical status of an SV. See C<sv_magic>. | |
116 | ||
117 | =cut | |
118 | */ | |
119 | ||
8990e307 | 120 | void |
864dbfa3 | 121 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 | 122 | { |
e1ec3a88 | 123 | const MAGIC* mg; |
7918f24d | 124 | PERL_ARGS_ASSERT_MG_MAGICAL; |
96a5add6 | 125 | PERL_UNUSED_CONTEXT; |
8990e307 | 126 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 127 | const MGVTBL* const vtbl = mg->mg_virtual; |
8990e307 | 128 | if (vtbl) { |
2b260de0 | 129 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 LW |
130 | SvGMAGICAL_on(sv); |
131 | if (vtbl->svt_set) | |
132 | SvSMAGICAL_on(sv); | |
2b260de0 | 133 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) |
8990e307 LW |
134 | SvRMAGICAL_on(sv); |
135 | } | |
136 | } | |
137 | } | |
138 | ||
2767dea0 DM |
139 | |
140 | /* is this container magic (%ENV, $1 etc), or value magic (pos, taint etc)? */ | |
141 | ||
142 | STATIC bool | |
143 | S_is_container_magic(const MAGIC *mg) | |
144 | { | |
7918f24d | 145 | assert(mg); |
2767dea0 DM |
146 | switch (mg->mg_type) { |
147 | case PERL_MAGIC_bm: | |
148 | case PERL_MAGIC_fm: | |
149 | case PERL_MAGIC_regex_global: | |
150 | case PERL_MAGIC_nkeys: | |
151 | #ifdef USE_LOCALE_COLLATE | |
152 | case PERL_MAGIC_collxfrm: | |
153 | #endif | |
154 | case PERL_MAGIC_qr: | |
155 | case PERL_MAGIC_taint: | |
156 | case PERL_MAGIC_vec: | |
157 | case PERL_MAGIC_vstring: | |
158 | case PERL_MAGIC_utf8: | |
159 | case PERL_MAGIC_substr: | |
160 | case PERL_MAGIC_defelem: | |
161 | case PERL_MAGIC_arylen: | |
162 | case PERL_MAGIC_pos: | |
163 | case PERL_MAGIC_backref: | |
164 | case PERL_MAGIC_arylen_p: | |
165 | case PERL_MAGIC_rhash: | |
166 | case PERL_MAGIC_symtab: | |
167 | return 0; | |
168 | default: | |
169 | return 1; | |
170 | } | |
171 | } | |
172 | ||
954c1994 GS |
173 | /* |
174 | =for apidoc mg_get | |
175 | ||
176 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
177 | ||
178 | =cut | |
179 | */ | |
180 | ||
79072805 | 181 | int |
864dbfa3 | 182 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 183 | { |
97aff369 | 184 | dVAR; |
35a4481c | 185 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
fe2774ed | 186 | const bool was_temp = (bool)SvTEMP(sv); |
0723351e | 187 | int have_new = 0; |
ff76feab | 188 | MAGIC *newmg, *head, *cur, *mg; |
20135930 | 189 | /* guard against sv having being freed midway by holding a private |
6683b158 NC |
190 | reference. */ |
191 | ||
7918f24d NC |
192 | PERL_ARGS_ASSERT_MG_GET; |
193 | ||
6683b158 NC |
194 | /* sv_2mortal has this side effect of turning on the TEMP flag, which can |
195 | cause the SV's buffer to get stolen (and maybe other stuff). | |
196 | So restore it. | |
197 | */ | |
46da273f | 198 | sv_2mortal(SvREFCNT_inc_simple_NN(sv)); |
6683b158 NC |
199 | if (!was_temp) { |
200 | SvTEMP_off(sv); | |
201 | } | |
202 | ||
455ece5e | 203 | save_magic(mgs_ix, sv); |
463ee0b2 | 204 | |
ff76feab AMS |
205 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
206 | list of magic. svt_get() may delete the current entry, add new | |
207 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
208 | ||
209 | newmg = cur = head = mg = SvMAGIC(sv); | |
210 | while (mg) { | |
35a4481c | 211 | const MGVTBL * const vtbl = mg->mg_virtual; |
ff76feab | 212 | |
2b260de0 | 213 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
316ad4fe | 214 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
b77f7d40 | 215 | |
58f82c5c DM |
216 | /* guard against magic having been deleted - eg FETCH calling |
217 | * untie */ | |
218 | if (!SvMAGIC(sv)) | |
219 | break; | |
b77f7d40 | 220 | |
ff76feab AMS |
221 | /* Don't restore the flags for this entry if it was deleted. */ |
222 | if (mg->mg_flags & MGf_GSKIP) | |
223 | (SSPTR(mgs_ix, MGS *))->mgs_flags = 0; | |
a0d0e21e | 224 | } |
ff76feab AMS |
225 | |
226 | mg = mg->mg_moremagic; | |
227 | ||
0723351e | 228 | if (have_new) { |
ff76feab AMS |
229 | /* Have we finished with the new entries we saw? Start again |
230 | where we left off (unless there are more new entries). */ | |
231 | if (mg == head) { | |
0723351e | 232 | have_new = 0; |
ff76feab AMS |
233 | mg = cur; |
234 | head = newmg; | |
235 | } | |
236 | } | |
237 | ||
238 | /* Were any new entries added? */ | |
0723351e NC |
239 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
240 | have_new = 1; | |
ff76feab AMS |
241 | cur = mg; |
242 | mg = newmg; | |
760ac839 | 243 | } |
79072805 | 244 | } |
463ee0b2 | 245 | |
8772537c | 246 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); |
6683b158 NC |
247 | |
248 | if (SvREFCNT(sv) == 1) { | |
249 | /* We hold the last reference to this SV, which implies that the | |
250 | SV was deleted as a side effect of the routines we called. */ | |
0c34ef67 | 251 | SvOK_off(sv); |
6683b158 | 252 | } |
79072805 LW |
253 | return 0; |
254 | } | |
255 | ||
954c1994 GS |
256 | /* |
257 | =for apidoc mg_set | |
258 | ||
259 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
260 | ||
261 | =cut | |
262 | */ | |
263 | ||
79072805 | 264 | int |
864dbfa3 | 265 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 266 | { |
97aff369 | 267 | dVAR; |
35a4481c | 268 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 269 | MAGIC* mg; |
463ee0b2 LW |
270 | MAGIC* nextmg; |
271 | ||
7918f24d NC |
272 | PERL_ARGS_ASSERT_MG_SET; |
273 | ||
455ece5e | 274 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
275 | |
276 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 277 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 278 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
279 | if (mg->mg_flags & MGf_GSKIP) { |
280 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
455ece5e | 281 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 282 | } |
e7cbf6c6 DM |
283 | if (PL_localizing == 2 && !S_is_container_magic(mg)) |
284 | continue; | |
2b260de0 | 285 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 | 286 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 | 287 | } |
463ee0b2 | 288 | |
8772537c | 289 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
290 | return 0; |
291 | } | |
292 | ||
954c1994 GS |
293 | /* |
294 | =for apidoc mg_length | |
295 | ||
296 | Report on the SV's length. See C<sv_magic>. | |
297 | ||
298 | =cut | |
299 | */ | |
300 | ||
79072805 | 301 | U32 |
864dbfa3 | 302 | Perl_mg_length(pTHX_ SV *sv) |
79072805 | 303 | { |
97aff369 | 304 | dVAR; |
79072805 | 305 | MAGIC* mg; |
463ee0b2 | 306 | STRLEN len; |
463ee0b2 | 307 | |
7918f24d NC |
308 | PERL_ARGS_ASSERT_MG_LENGTH; |
309 | ||
79072805 | 310 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 311 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 312 | if (vtbl && vtbl->svt_len) { |
35a4481c | 313 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 314 | save_magic(mgs_ix, sv); |
a0d0e21e | 315 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 316 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c | 317 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
318 | return len; |
319 | } | |
320 | } | |
321 | ||
d0644529 NC |
322 | { |
323 | /* You can't know whether it's UTF-8 until you get the string again... | |
324 | */ | |
10516c54 | 325 | const U8 *s = (U8*)SvPV_const(sv, len); |
d0644529 NC |
326 | |
327 | if (DO_UTF8(sv)) { | |
328 | len = utf8_length(s, s + len); | |
329 | } | |
5636d518 | 330 | } |
463ee0b2 | 331 | return len; |
79072805 LW |
332 | } |
333 | ||
8fb26106 | 334 | I32 |
864dbfa3 | 335 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
336 | { |
337 | MAGIC* mg; | |
ac27b0f5 | 338 | |
7918f24d NC |
339 | PERL_ARGS_ASSERT_MG_SIZE; |
340 | ||
93965878 | 341 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 342 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 343 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
344 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
345 | I32 len; | |
455ece5e | 346 | save_magic(mgs_ix, sv); |
93965878 | 347 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 348 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c | 349 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
350 | return len; |
351 | } | |
352 | } | |
353 | ||
354 | switch(SvTYPE(sv)) { | |
355 | case SVt_PVAV: | |
35a4481c | 356 | return AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
357 | case SVt_PVHV: |
358 | /* FIXME */ | |
359 | default: | |
cea2e8a9 | 360 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
361 | break; |
362 | } | |
363 | return 0; | |
364 | } | |
365 | ||
954c1994 GS |
366 | /* |
367 | =for apidoc mg_clear | |
368 | ||
369 | Clear something magical that the SV represents. See C<sv_magic>. | |
370 | ||
371 | =cut | |
372 | */ | |
373 | ||
79072805 | 374 | int |
864dbfa3 | 375 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 376 | { |
35a4481c | 377 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 378 | MAGIC* mg; |
463ee0b2 | 379 | |
7918f24d NC |
380 | PERL_ARGS_ASSERT_MG_CLEAR; |
381 | ||
455ece5e | 382 | save_magic(mgs_ix, sv); |
463ee0b2 | 383 | |
79072805 | 384 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 385 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 386 | /* omit GSKIP -- never set here */ |
727405f8 | 387 | |
2b260de0 | 388 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 | 389 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 390 | } |
463ee0b2 | 391 | |
8772537c | 392 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
393 | return 0; |
394 | } | |
395 | ||
954c1994 GS |
396 | /* |
397 | =for apidoc mg_find | |
398 | ||
399 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
400 | ||
401 | =cut | |
402 | */ | |
403 | ||
93a17b20 | 404 | MAGIC* |
35a4481c | 405 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 406 | { |
96a5add6 | 407 | PERL_UNUSED_CONTEXT; |
35a4481c AL |
408 | if (sv) { |
409 | MAGIC *mg; | |
410 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
411 | if (mg->mg_type == type) | |
412 | return mg; | |
413 | } | |
93a17b20 | 414 | } |
5f66b61c | 415 | return NULL; |
93a17b20 LW |
416 | } |
417 | ||
954c1994 GS |
418 | /* |
419 | =for apidoc mg_copy | |
420 | ||
421 | Copies the magic from one SV to another. See C<sv_magic>. | |
422 | ||
423 | =cut | |
424 | */ | |
425 | ||
79072805 | 426 | int |
864dbfa3 | 427 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 428 | { |
463ee0b2 | 429 | int count = 0; |
79072805 | 430 | MAGIC* mg; |
7918f24d NC |
431 | |
432 | PERL_ARGS_ASSERT_MG_COPY; | |
433 | ||
463ee0b2 | 434 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 435 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 NIS |
436 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
437 | count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen); | |
438 | } | |
823a54a3 AL |
439 | else { |
440 | const char type = mg->mg_type; | |
1e73acc8 | 441 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
442 | sv_magic(nsv, |
443 | (type == PERL_MAGIC_tied) | |
444 | ? SvTIED_obj(sv, mg) | |
445 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
446 | ? sv | |
447 | : mg->mg_obj, | |
448 | toLOWER(type), key, klen); | |
449 | count++; | |
450 | } | |
79072805 | 451 | } |
79072805 | 452 | } |
463ee0b2 | 453 | return count; |
79072805 LW |
454 | } |
455 | ||
954c1994 | 456 | /* |
0cbee0a4 DM |
457 | =for apidoc mg_localize |
458 | ||
459 | Copy some of the magic from an existing SV to new localized version of | |
460 | that SV. Container magic (eg %ENV, $1, tie) gets copied, value magic | |
461 | doesn't (eg taint, pos). | |
462 | ||
463 | =cut | |
464 | */ | |
465 | ||
466 | void | |
467 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv) | |
468 | { | |
97aff369 | 469 | dVAR; |
0cbee0a4 | 470 | MAGIC *mg; |
7918f24d NC |
471 | |
472 | PERL_ARGS_ASSERT_MG_LOCALIZE; | |
473 | ||
0cbee0a4 | 474 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
2b1b43ea | 475 | const MGVTBL* const vtbl = mg->mg_virtual; |
2767dea0 | 476 | if (!S_is_container_magic(mg)) |
0cbee0a4 | 477 | continue; |
0cbee0a4 | 478 | |
a5063e7c DM |
479 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
480 | (void)CALL_FPTR(vtbl->svt_local)(aTHX_ nsv, mg); | |
481 | else | |
0cbee0a4 DM |
482 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
483 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 484 | |
0cbee0a4 DM |
485 | /* container types should remain read-only across localization */ |
486 | SvFLAGS(nsv) |= SvREADONLY(sv); | |
487 | } | |
488 | ||
489 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
490 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
491 | PL_localizing = 1; | |
492 | SvSETMAGIC(nsv); | |
493 | PL_localizing = 0; | |
494 | } | |
495 | } | |
496 | ||
497 | /* | |
954c1994 GS |
498 | =for apidoc mg_free |
499 | ||
500 | Free any magic storage used by the SV. See C<sv_magic>. | |
501 | ||
502 | =cut | |
503 | */ | |
504 | ||
79072805 | 505 | int |
864dbfa3 | 506 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
507 | { |
508 | MAGIC* mg; | |
509 | MAGIC* moremagic; | |
7918f24d NC |
510 | |
511 | PERL_ARGS_ASSERT_MG_FREE; | |
512 | ||
79072805 | 513 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
35a4481c | 514 | const MGVTBL* const vtbl = mg->mg_virtual; |
79072805 | 515 | moremagic = mg->mg_moremagic; |
2b260de0 | 516 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 517 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 518 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
979acdb5 | 519 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) |
88e89b8a | 520 | Safefree(mg->mg_ptr); |
565764a8 | 521 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 522 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d460ef45 | 523 | } |
b881518d JH |
524 | if (mg->mg_flags & MGf_REFCOUNTED) |
525 | SvREFCNT_dec(mg->mg_obj); | |
79072805 | 526 | Safefree(mg); |
c826f41b | 527 | SvMAGIC_set(sv, moremagic); |
79072805 | 528 | } |
b162af07 | 529 | SvMAGIC_set(sv, NULL); |
79072805 LW |
530 | return 0; |
531 | } | |
532 | ||
79072805 | 533 | #include <signal.h> |
79072805 | 534 | |
942e002e | 535 | U32 |
864dbfa3 | 536 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 537 | { |
97aff369 | 538 | dVAR; |
8772537c | 539 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 540 | |
7918f24d NC |
541 | PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT; |
542 | ||
0bd48802 AL |
543 | if (PL_curpm) { |
544 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
545 | if (rx) { | |
a678b0e4 YO |
546 | if (mg->mg_obj) { /* @+ */ |
547 | /* return the number possible */ | |
07bc277f | 548 | return RX_NPARENS(rx); |
a678b0e4 | 549 | } else { /* @- */ |
07bc277f | 550 | I32 paren = RX_LASTPAREN(rx); |
a678b0e4 YO |
551 | |
552 | /* return the last filled */ | |
f46c4081 | 553 | while ( paren >= 0 |
07bc277f NC |
554 | && (RX_OFFS(rx)[paren].start == -1 |
555 | || RX_OFFS(rx)[paren].end == -1) ) | |
f46c4081 | 556 | paren--; |
a678b0e4 YO |
557 | return (U32)paren; |
558 | } | |
0bd48802 | 559 | } |
8f580fb8 | 560 | } |
ac27b0f5 | 561 | |
942e002e | 562 | return (U32)-1; |
6cef1e77 IZ |
563 | } |
564 | ||
565 | int | |
864dbfa3 | 566 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 567 | { |
97aff369 | 568 | dVAR; |
7918f24d NC |
569 | |
570 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET; | |
571 | ||
0bd48802 AL |
572 | if (PL_curpm) { |
573 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
574 | if (rx) { | |
575 | register const I32 paren = mg->mg_len; | |
576 | register I32 s; | |
577 | register I32 t; | |
578 | if (paren < 0) | |
579 | return 0; | |
07bc277f NC |
580 | if (paren <= (I32)RX_NPARENS(rx) && |
581 | (s = RX_OFFS(rx)[paren].start) != -1 && | |
582 | (t = RX_OFFS(rx)[paren].end) != -1) | |
0bd48802 AL |
583 | { |
584 | register I32 i; | |
585 | if (mg->mg_obj) /* @+ */ | |
586 | i = t; | |
587 | else /* @- */ | |
588 | i = s; | |
589 | ||
590 | if (i > 0 && RX_MATCH_UTF8(rx)) { | |
07bc277f | 591 | const char * const b = RX_SUBBEG(rx); |
0bd48802 | 592 | if (b) |
f5a63d97 | 593 | i = utf8_length((U8*)b, (U8*)(b+i)); |
0bd48802 | 594 | } |
727405f8 | 595 | |
0bd48802 | 596 | sv_setiv(sv, i); |
1aa99e6b | 597 | } |
0bd48802 | 598 | } |
6cef1e77 IZ |
599 | } |
600 | return 0; | |
601 | } | |
602 | ||
e4b89193 | 603 | int |
a29d06ed MG |
604 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
605 | { | |
7918f24d | 606 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET; |
d4c19fe8 AL |
607 | PERL_UNUSED_ARG(sv); |
608 | PERL_UNUSED_ARG(mg); | |
a29d06ed | 609 | Perl_croak(aTHX_ PL_no_modify); |
0dbb1585 | 610 | NORETURN_FUNCTION_END; |
a29d06ed MG |
611 | } |
612 | ||
93a17b20 | 613 | U32 |
864dbfa3 | 614 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 615 | { |
97aff369 | 616 | dVAR; |
93a17b20 | 617 | register I32 paren; |
93a17b20 | 618 | register I32 i; |
2fdbfb4d AB |
619 | register const REGEXP * rx; |
620 | const char * const remaining = mg->mg_ptr + 1; | |
93a17b20 | 621 | |
7918f24d NC |
622 | PERL_ARGS_ASSERT_MAGIC_LEN; |
623 | ||
93a17b20 | 624 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
625 | case '\020': |
626 | if (*remaining == '\0') { /* ^P */ | |
627 | break; | |
628 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
629 | goto do_prematch; | |
630 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
631 | goto do_postmatch; | |
632 | } | |
633 | break; | |
634 | case '\015': /* $^MATCH */ | |
635 | if (strEQ(remaining, "ATCH")) { | |
636 | goto do_match; | |
637 | } else { | |
638 | break; | |
639 | } | |
640 | case '`': | |
641 | do_prematch: | |
f1b875a0 | 642 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
643 | goto maybegetparen; |
644 | case '\'': | |
645 | do_postmatch: | |
f1b875a0 | 646 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
647 | goto maybegetparen; |
648 | case '&': | |
649 | do_match: | |
f1b875a0 | 650 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d | 651 | goto maybegetparen; |
93a17b20 | 652 | case '1': case '2': case '3': case '4': |
2fdbfb4d AB |
653 | case '5': case '6': case '7': case '8': case '9': |
654 | paren = atoi(mg->mg_ptr); | |
655 | maybegetparen: | |
aaa362c4 | 656 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
657 | getparen: |
658 | i = CALLREG_NUMBUF_LENGTH((REGEXP * const)rx, sv, paren); | |
cf93c79d | 659 | |
ffc61ed2 | 660 | if (i < 0) |
0844c848 | 661 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 662 | return i; |
2fdbfb4d | 663 | } else { |
235bddc8 | 664 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 665 | report_uninit(sv); |
2fdbfb4d | 666 | return 0; |
93a17b20 | 667 | } |
93a17b20 | 668 | case '+': |
aaa362c4 | 669 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f | 670 | paren = RX_LASTPAREN(rx); |
13f57bf8 CS |
671 | if (paren) |
672 | goto getparen; | |
93a17b20 | 673 | } |
748a9306 | 674 | return 0; |
a01268b5 JH |
675 | case '\016': /* ^N */ |
676 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f | 677 | paren = RX_LASTCLOSEPAREN(rx); |
a01268b5 JH |
678 | if (paren) |
679 | goto getparen; | |
680 | } | |
681 | return 0; | |
93a17b20 LW |
682 | } |
683 | magic_get(sv,mg); | |
2d8e6c8d | 684 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 | 685 | sv_2pv(sv, 0); |
2d8e6c8d | 686 | } |
93a17b20 LW |
687 | if (SvPOK(sv)) |
688 | return SvCUR(sv); | |
689 | return 0; | |
690 | } | |
691 | ||
ad3296c6 | 692 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
693 | if (SvPOK(sv)) { \ |
694 | STRLEN len = SvCUR(sv); \ | |
695 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
696 | while (len > 0 && isSPACE(p[len-1])) \ |
697 | --len; \ | |
698 | SvCUR_set(sv, len); \ | |
699 | p[len] = '\0'; \ | |
700 | } \ | |
ad3296c6 SH |
701 | } STMT_END |
702 | ||
8b850bd5 NC |
703 | void |
704 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
705 | { | |
7918f24d NC |
706 | PERL_ARGS_ASSERT_EMULATE_COP_IO; |
707 | ||
8b850bd5 NC |
708 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) |
709 | sv_setsv(sv, &PL_sv_undef); | |
710 | else { | |
711 | sv_setpvs(sv, ""); | |
712 | SvUTF8_off(sv); | |
713 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
714 | SV *const value = Perl_refcounted_he_fetch(aTHX_ | |
715 | c->cop_hints_hash, | |
716 | 0, "open<", 5, 0, 0); | |
717 | assert(value); | |
718 | sv_catsv(sv, value); | |
719 | } | |
720 | sv_catpvs(sv, "\0"); | |
721 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
722 | SV *const value = Perl_refcounted_he_fetch(aTHX_ | |
723 | c->cop_hints_hash, | |
724 | 0, "open>", 5, 0, 0); | |
725 | assert(value); | |
726 | sv_catsv(sv, value); | |
727 | } | |
728 | } | |
729 | } | |
730 | ||
79072805 | 731 | int |
864dbfa3 | 732 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 733 | { |
27da23d5 | 734 | dVAR; |
79072805 | 735 | register I32 paren; |
35272f84 | 736 | register char *s = NULL; |
d9f97599 | 737 | register REGEXP *rx; |
823a54a3 AL |
738 | const char * const remaining = mg->mg_ptr + 1; |
739 | const char nextchar = *remaining; | |
79072805 | 740 | |
7918f24d NC |
741 | PERL_ARGS_ASSERT_MAGIC_GET; |
742 | ||
79072805 | 743 | switch (*mg->mg_ptr) { |
748a9306 | 744 | case '\001': /* ^A */ |
3280af22 | 745 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 746 | break; |
e5218da5 | 747 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 748 | if (nextchar == '\0') { |
e5218da5 GA |
749 | sv_setiv(sv, (IV)PL_minus_c); |
750 | } | |
823a54a3 | 751 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
752 | sv_setiv(sv, (IV)STATUS_NATIVE); |
753 | } | |
49460fe6 NIS |
754 | break; |
755 | ||
79072805 | 756 | case '\004': /* ^D */ |
aea4f609 | 757 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 758 | break; |
28f23441 | 759 | case '\005': /* ^E */ |
823a54a3 | 760 | if (nextchar == '\0') { |
4b645107 | 761 | #if defined(MACOS_TRADITIONAL) |
0a378802 JH |
762 | { |
763 | char msg[256]; | |
727405f8 | 764 | |
0a378802 | 765 | sv_setnv(sv,(double)gMacPerl_OSErr); |
727405f8 | 766 | sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : ""); |
0a378802 | 767 | } |
4b645107 | 768 | #elif defined(VMS) |
0a378802 JH |
769 | { |
770 | # include <descrip.h> | |
771 | # include <starlet.h> | |
772 | char msg[255]; | |
773 | $DESCRIPTOR(msgdsc,msg); | |
774 | sv_setnv(sv,(NV) vaxc$errno); | |
775 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
776 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
777 | else | |
c69006e4 | 778 | sv_setpvn(sv,"",0); |
0a378802 | 779 | } |
4b645107 | 780 | #elif defined(OS2) |
0a378802 JH |
781 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
782 | sv_setnv(sv, (NV)errno); | |
783 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
784 | } else { | |
785 | if (errno != errno_isOS2) { | |
823a54a3 | 786 | const int tmp = _syserrno(); |
0a378802 JH |
787 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
788 | Perl_rc = tmp; | |
789 | } | |
790 | sv_setnv(sv, (NV)Perl_rc); | |
791 | sv_setpv(sv, os2error(Perl_rc)); | |
792 | } | |
4b645107 | 793 | #elif defined(WIN32) |
0a378802 | 794 | { |
d4c19fe8 | 795 | const DWORD dwErr = GetLastError(); |
0a378802 | 796 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 797 | if (dwErr) { |
0a378802 JH |
798 | PerlProc_GetOSError(sv, dwErr); |
799 | } | |
800 | else | |
c69006e4 | 801 | sv_setpvn(sv, "", 0); |
0a378802 JH |
802 | SetLastError(dwErr); |
803 | } | |
22fae026 | 804 | #else |
f6c8f21d | 805 | { |
8772537c | 806 | const int saveerrno = errno; |
f6c8f21d | 807 | sv_setnv(sv, (NV)errno); |
666ea192 | 808 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
f6c8f21d RGS |
809 | errno = saveerrno; |
810 | } | |
28f23441 | 811 | #endif |
ad3296c6 | 812 | SvRTRIM(sv); |
0a378802 JH |
813 | SvNOK_on(sv); /* what a wonderful hack! */ |
814 | } | |
823a54a3 | 815 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
816 | sv_setsv(sv, PL_encoding); |
817 | break; | |
79072805 | 818 | case '\006': /* ^F */ |
3280af22 | 819 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 820 | break; |
a0d0e21e | 821 | case '\010': /* ^H */ |
3280af22 | 822 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 823 | break; |
9d116dd7 | 824 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 825 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 826 | break; |
ac27b0f5 | 827 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 828 | if (nextchar == '\0') { |
ac27b0f5 | 829 | sv_setpv(sv, PL_osname); |
3511154c DM |
830 | SvTAINTED_off(sv); |
831 | } | |
823a54a3 | 832 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 833 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 834 | } |
28f23441 | 835 | break; |
cde0cee5 YO |
836 | case '\020': |
837 | if (nextchar == '\0') { /* ^P */ | |
838 | sv_setiv(sv, (IV)PL_perldb); | |
839 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
840 | goto do_prematch_fetch; | |
841 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
842 | goto do_postmatch_fetch; | |
843 | } | |
79072805 | 844 | break; |
fb73857a | 845 | case '\023': /* ^S */ |
823a54a3 | 846 | if (nextchar == '\0') { |
bc177e6b | 847 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 848 | SvOK_off(sv); |
3280af22 | 849 | else if (PL_in_eval) |
6dc8a9e4 | 850 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
851 | else |
852 | sv_setiv(sv, 0); | |
d58bf5aa | 853 | } |
fb73857a | 854 | break; |
79072805 | 855 | case '\024': /* ^T */ |
823a54a3 | 856 | if (nextchar == '\0') { |
88e89b8a | 857 | #ifdef BIG_TIME |
7c36658b | 858 | sv_setnv(sv, PL_basetime); |
88e89b8a | 859 | #else |
7c36658b | 860 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 861 | #endif |
7c36658b | 862 | } |
823a54a3 | 863 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
864 | sv_setiv(sv, PL_tainting |
865 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
866 | : 0); | |
7c36658b | 867 | break; |
e07ea26a | 868 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 869 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 870 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 871 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 872 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
873 | else if (strEQ(remaining, "TF8CACHE")) |
874 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
875 | break; |
876 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 877 | if (nextchar == '\0') |
4438c4b7 | 878 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 879 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 880 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 881 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
882 | } |
883 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
666ea192 JH |
884 | sv_setpvn( |
885 | sv, | |
886 | (PL_dowarn & G_WARN_ON) ? WARN_ALLstring : WARN_NONEstring, | |
887 | WARNsize | |
888 | ); | |
013b78e8 | 889 | } |
d3a7d8c7 | 890 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
891 | /* Get the bit mask for $warnings::Bits{all}, because |
892 | * it could have been extended by warnings::register */ | |
823a54a3 | 893 | HV * const bits=get_hv("warnings::Bits", FALSE); |
f5a63d97 AL |
894 | if (bits) { |
895 | SV ** const bits_all = hv_fetchs(bits, "all", FALSE); | |
896 | if (bits_all) | |
897 | sv_setsv(sv, *bits_all); | |
75b6c4ca RGS |
898 | } |
899 | else { | |
900 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
901 | } | |
ac27b0f5 | 902 | } |
4438c4b7 | 903 | else { |
72dc9ed5 NC |
904 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
905 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 906 | } |
d3a7d8c7 | 907 | SvPOK_only(sv); |
4438c4b7 | 908 | } |
79072805 | 909 | break; |
cde0cee5 YO |
910 | case '\015': /* $^MATCH */ |
911 | if (strEQ(remaining, "ATCH")) { | |
79072805 LW |
912 | case '1': case '2': case '3': case '4': |
913 | case '5': case '6': case '7': case '8': case '9': case '&': | |
cde0cee5 YO |
914 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
915 | /* | |
916 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
917 | * XXX Does the new way break anything? | |
918 | */ | |
919 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
2fdbfb4d | 920 | CALLREG_NUMBUF_FETCH(rx,paren,sv); |
cde0cee5 YO |
921 | break; |
922 | } | |
923 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
924 | } |
925 | break; | |
926 | case '+': | |
aaa362c4 | 927 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f NC |
928 | if (RX_LASTPAREN(rx)) { |
929 | CALLREG_NUMBUF_FETCH(rx,RX_LASTPAREN(rx),sv); | |
44a2ac75 YO |
930 | break; |
931 | } | |
79072805 | 932 | } |
3280af22 | 933 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 934 | break; |
a01268b5 JH |
935 | case '\016': /* ^N */ |
936 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f NC |
937 | if (RX_LASTCLOSEPAREN(rx)) { |
938 | CALLREG_NUMBUF_FETCH(rx,RX_LASTCLOSEPAREN(rx),sv); | |
44a2ac75 YO |
939 | break; |
940 | } | |
941 | ||
a01268b5 JH |
942 | } |
943 | sv_setsv(sv,&PL_sv_undef); | |
944 | break; | |
79072805 | 945 | case '`': |
cde0cee5 | 946 | do_prematch_fetch: |
aaa362c4 | 947 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 948 | CALLREG_NUMBUF_FETCH(rx,-2,sv); |
93b32b6d | 949 | break; |
79072805 | 950 | } |
3280af22 | 951 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
952 | break; |
953 | case '\'': | |
cde0cee5 | 954 | do_postmatch_fetch: |
aaa362c4 | 955 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 956 | CALLREG_NUMBUF_FETCH(rx,-1,sv); |
93b32b6d | 957 | break; |
79072805 | 958 | } |
3280af22 | 959 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
960 | break; |
961 | case '.': | |
3280af22 | 962 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 963 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 964 | } |
79072805 LW |
965 | break; |
966 | case '?': | |
809a5acc | 967 | { |
809a5acc | 968 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 969 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
970 | LvTARGOFF(sv) = PL_statusvalue; |
971 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 972 | #endif |
809a5acc | 973 | } |
79072805 LW |
974 | break; |
975 | case '^': | |
0daa599b RGS |
976 | if (GvIOp(PL_defoutgv)) |
977 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); | |
79072805 LW |
978 | if (s) |
979 | sv_setpv(sv,s); | |
980 | else { | |
3280af22 | 981 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 982 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
983 | } |
984 | break; | |
985 | case '~': | |
0daa599b RGS |
986 | if (GvIOp(PL_defoutgv)) |
987 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); | |
79072805 | 988 | if (!s) |
3280af22 | 989 | s = GvENAME(PL_defoutgv); |
79072805 LW |
990 | sv_setpv(sv,s); |
991 | break; | |
79072805 | 992 | case '=': |
0daa599b RGS |
993 | if (GvIOp(PL_defoutgv)) |
994 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); | |
79072805 LW |
995 | break; |
996 | case '-': | |
0daa599b RGS |
997 | if (GvIOp(PL_defoutgv)) |
998 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); | |
79072805 LW |
999 | break; |
1000 | case '%': | |
0daa599b RGS |
1001 | if (GvIOp(PL_defoutgv)) |
1002 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); | |
79072805 | 1003 | break; |
79072805 LW |
1004 | case ':': |
1005 | break; | |
1006 | case '/': | |
1007 | break; | |
1008 | case '[': | |
11206fdd | 1009 | sv_setiv(sv, (IV)CopARYBASE_get(PL_curcop)); |
79072805 LW |
1010 | break; |
1011 | case '|': | |
0daa599b RGS |
1012 | if (GvIOp(PL_defoutgv)) |
1013 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); | |
79072805 LW |
1014 | break; |
1015 | case ',': | |
79072805 LW |
1016 | break; |
1017 | case '\\': | |
b2ce0fda | 1018 | if (PL_ors_sv) |
f28098ff | 1019 | sv_copypv(sv, PL_ors_sv); |
79072805 | 1020 | break; |
79072805 | 1021 | case '!': |
a5f75d66 | 1022 | #ifdef VMS |
65202027 | 1023 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 1024 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 1025 | #else |
88e89b8a | 1026 | { |
8772537c | 1027 | const int saveerrno = errno; |
65202027 | 1028 | sv_setnv(sv, (NV)errno); |
88e89b8a | 1029 | #ifdef OS2 |
ed344e4f IZ |
1030 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
1031 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 1032 | else |
a5f75d66 | 1033 | #endif |
666ea192 | 1034 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a PP |
1035 | errno = saveerrno; |
1036 | } | |
1037 | #endif | |
ad3296c6 | 1038 | SvRTRIM(sv); |
946ec16e | 1039 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1040 | break; |
1041 | case '<': | |
3280af22 | 1042 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
1043 | break; |
1044 | case '>': | |
3280af22 | 1045 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
1046 | break; |
1047 | case '(': | |
3280af22 | 1048 | sv_setiv(sv, (IV)PL_gid); |
79072805 LW |
1049 | goto add_groups; |
1050 | case ')': | |
3280af22 | 1051 | sv_setiv(sv, (IV)PL_egid); |
79072805 | 1052 | add_groups: |
79072805 | 1053 | #ifdef HAS_GETGROUPS |
79072805 | 1054 | { |
57d7c65e | 1055 | Groups_t *gary = NULL; |
fb45abb2 | 1056 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1057 | Newx(gary, num_groups, Groups_t); |
1058 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1059 | for (i = 0; i < num_groups; i++) |
1060 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1061 | Safefree(gary); |
79072805 | 1062 | } |
155aba94 | 1063 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1064 | #endif |
79072805 | 1065 | break; |
cd39f2b6 | 1066 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
1067 | case '0': |
1068 | break; | |
cd39f2b6 | 1069 | #endif |
79072805 | 1070 | } |
a0d0e21e | 1071 | return 0; |
79072805 LW |
1072 | } |
1073 | ||
1074 | int | |
864dbfa3 | 1075 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1076 | { |
8772537c | 1077 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1078 | |
7918f24d NC |
1079 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1080 | ||
79072805 | 1081 | if (uf && uf->uf_val) |
24f81a43 | 1082 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1083 | return 0; |
1084 | } | |
1085 | ||
1086 | int | |
864dbfa3 | 1087 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1088 | { |
27da23d5 | 1089 | dVAR; |
9ae3433d | 1090 | STRLEN len = 0, klen; |
666ea192 | 1091 | const char *s = SvOK(sv) ? SvPV_const(sv,len) : ""; |
fabdb6c0 | 1092 | const char * const ptr = MgPV_const(mg,klen); |
88e89b8a | 1093 | my_setenv(ptr, s); |
1e422769 | 1094 | |
7918f24d NC |
1095 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1096 | ||
a0d0e21e LW |
1097 | #ifdef DYNAMIC_ENV_FETCH |
1098 | /* We just undefd an environment var. Is a replacement */ | |
1099 | /* waiting in the wings? */ | |
1100 | if (!len) { | |
fabdb6c0 AL |
1101 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE); |
1102 | if (valp) | |
4ab59fcc | 1103 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1104 | } |
1105 | #endif | |
1e422769 | 1106 | |
39e571d4 | 1107 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1108 | /* And you'll never guess what the dog had */ |
1109 | /* in its mouth... */ | |
3280af22 | 1110 | if (PL_tainting) { |
1e422769 PP |
1111 | MgTAINTEDDIR_off(mg); |
1112 | #ifdef VMS | |
5aabfad6 | 1113 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
b8ffc8df | 1114 | char pathbuf[256], eltbuf[256], *cp, *elt; |
c623ac67 | 1115 | Stat_t sbuf; |
1e422769 PP |
1116 | int i = 0, j = 0; |
1117 | ||
6fca0082 | 1118 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1119 | elt = eltbuf; |
1e422769 PP |
1120 | do { /* DCL$PATH may be a search list */ |
1121 | while (1) { /* as may dev portion of any element */ | |
1122 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1123 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1124 | cando_by_name(S_IWUSR,0,elt) ) { | |
1125 | MgTAINTEDDIR_on(mg); | |
1126 | return 0; | |
1127 | } | |
1128 | } | |
bd61b366 | 1129 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 PP |
1130 | *cp = '\0'; |
1131 | if (my_trnlnm(elt, eltbuf, j++)) | |
1132 | elt = eltbuf; | |
1133 | else | |
1134 | break; | |
1135 | } | |
1136 | j = 0; | |
1137 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1138 | } | |
1139 | #endif /* VMS */ | |
5aabfad6 | 1140 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
8772537c | 1141 | const char * const strend = s + len; |
463ee0b2 LW |
1142 | |
1143 | while (s < strend) { | |
96827780 | 1144 | char tmpbuf[256]; |
c623ac67 | 1145 | Stat_t st; |
5f74f29c | 1146 | I32 i; |
f5a63d97 AL |
1147 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1148 | const char path_sep = '|'; | |
1149 | #else | |
1150 | const char path_sep = ':'; | |
1151 | #endif | |
96827780 | 1152 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1153 | s, strend, path_sep, &i); |
463ee0b2 | 1154 | s++; |
bb7a0f54 | 1155 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1156 | #ifdef VMS |
1157 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1158 | #else | |
1159 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1160 | #endif | |
c6ed36e1 | 1161 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1162 | MgTAINTEDDIR_on(mg); |
1e422769 PP |
1163 | return 0; |
1164 | } | |
463ee0b2 | 1165 | } |
79072805 LW |
1166 | } |
1167 | } | |
39e571d4 | 1168 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1169 | |
79072805 LW |
1170 | return 0; |
1171 | } | |
1172 | ||
1173 | int | |
864dbfa3 | 1174 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1175 | { |
7918f24d | 1176 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1177 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1178 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1179 | return 0; |
1180 | } | |
1181 | ||
88e89b8a | 1182 | int |
864dbfa3 | 1183 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1184 | { |
97aff369 | 1185 | dVAR; |
7918f24d | 1186 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1187 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1188 | #if defined(VMS) |
cea2e8a9 | 1189 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1190 | #else |
3280af22 | 1191 | if (PL_localizing) { |
fb73857a | 1192 | HE* entry; |
b0269e46 | 1193 | my_clearenv(); |
fb73857a | 1194 | hv_iterinit((HV*)sv); |
155aba94 | 1195 | while ((entry = hv_iternext((HV*)sv))) { |
fb73857a PP |
1196 | I32 keylen; |
1197 | my_setenv(hv_iterkey(entry, &keylen), | |
b83604b4 | 1198 | SvPV_nolen_const(hv_iterval((HV*)sv, entry))); |
fb73857a PP |
1199 | } |
1200 | } | |
1201 | #endif | |
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | int | |
864dbfa3 | 1206 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1207 | { |
27da23d5 | 1208 | dVAR; |
7918f24d | 1209 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1210 | PERL_UNUSED_ARG(sv); |
1211 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1212 | #if defined(VMS) |
1213 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1214 | #else | |
1215 | my_clearenv(); | |
1216 | #endif | |
3e3baf6d | 1217 | return 0; |
66b1d557 HM |
1218 | } |
1219 | ||
64ca3a65 | 1220 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1221 | #ifdef HAS_SIGPROCMASK |
1222 | static void | |
1223 | restore_sigmask(pTHX_ SV *save_sv) | |
1224 | { | |
0bd48802 | 1225 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1226 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1227 | } |
1228 | #endif | |
66b1d557 | 1229 | int |
864dbfa3 | 1230 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1231 | { |
97aff369 | 1232 | dVAR; |
88e89b8a | 1233 | /* Are we fetching a signal entry? */ |
8772537c | 1234 | const I32 i = whichsig(MgPV_nolen_const(mg)); |
7918f24d NC |
1235 | |
1236 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1237 | ||
e02bfb16 | 1238 | if (i > 0) { |
22c35a8c GS |
1239 | if(PL_psig_ptr[i]) |
1240 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1241 | else { |
46da273f | 1242 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1243 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1244 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1245 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1246 | #endif |
1247 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1248 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1249 | sigstate = SIG_DFL; | |
85b332e2 | 1250 | #endif |
88e89b8a | 1251 | /* cache state so we don't fetch it again */ |
8aad04aa | 1252 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1253 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1254 | else |
3280af22 | 1255 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1256 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a PP |
1257 | SvTEMP_off(sv); |
1258 | } | |
1259 | } | |
1260 | return 0; | |
1261 | } | |
1262 | int | |
864dbfa3 | 1263 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1264 | { |
2d4fcd5e AJ |
1265 | /* XXX Some of this code was copied from Perl_magic_setsig. A little |
1266 | * refactoring might be in order. | |
1267 | */ | |
27da23d5 | 1268 | dVAR; |
8772537c | 1269 | register const char * const s = MgPV_nolen_const(mg); |
7918f24d | 1270 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
8772537c | 1271 | PERL_UNUSED_ARG(sv); |
2d4fcd5e | 1272 | if (*s == '_') { |
cbbf8932 | 1273 | SV** svp = NULL; |
2d4fcd5e AJ |
1274 | if (strEQ(s,"__DIE__")) |
1275 | svp = &PL_diehook; | |
b274dc4e | 1276 | else if (strEQ(s,"__WARN__") && PL_warnhook != PERL_WARNHOOK_FATAL) |
2d4fcd5e | 1277 | svp = &PL_warnhook; |
27da23d5 | 1278 | if (svp && *svp) { |
b274dc4e | 1279 | SV *const to_dec = *svp; |
cbbf8932 | 1280 | *svp = NULL; |
b274dc4e | 1281 | SvREFCNT_dec(to_dec); |
2d4fcd5e AJ |
1282 | } |
1283 | } | |
1284 | else { | |
2d4fcd5e | 1285 | /* Are we clearing a signal entry? */ |
8772537c | 1286 | const I32 i = whichsig(s); |
e02bfb16 | 1287 | if (i > 0) { |
2d4fcd5e AJ |
1288 | #ifdef HAS_SIGPROCMASK |
1289 | sigset_t set, save; | |
1290 | SV* save_sv; | |
1291 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1292 | sigemptyset(&set); | |
1293 | sigaddset(&set,i); | |
1294 | sigprocmask(SIG_BLOCK, &set, &save); | |
1295 | ENTER; | |
9ff8e806 | 1296 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1297 | SAVEFREESV(save_sv); |
1298 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1299 | #endif | |
1300 | PERL_ASYNC_CHECK(); | |
1301 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) | |
27da23d5 | 1302 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2d4fcd5e AJ |
1303 | #endif |
1304 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
27da23d5 | 1305 | PL_sig_defaulting[i] = 1; |
5c1546dc | 1306 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1307 | #else |
8aad04aa | 1308 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2d4fcd5e AJ |
1309 | #endif |
1310 | if(PL_psig_name[i]) { | |
1311 | SvREFCNT_dec(PL_psig_name[i]); | |
1312 | PL_psig_name[i]=0; | |
1313 | } | |
1314 | if(PL_psig_ptr[i]) { | |
6136c704 | 1315 | SV * const to_dec=PL_psig_ptr[i]; |
2d4fcd5e AJ |
1316 | PL_psig_ptr[i]=0; |
1317 | LEAVE; | |
1318 | SvREFCNT_dec(to_dec); | |
1319 | } | |
1320 | else | |
1321 | LEAVE; | |
1322 | } | |
88e89b8a PP |
1323 | } |
1324 | return 0; | |
1325 | } | |
3d37d572 | 1326 | |
acd15b85 CB |
1327 | /* |
1328 | * The signal handling nomenclature has gotten a bit confusing since the advent of | |
1329 | * safe signals. S_raise_signal only raises signals by analogy with what the | |
1330 | * underlying system's signal mechanism does. It might be more proper to say that | |
1331 | * it defers signals that have already been raised and caught. | |
1332 | * | |
1333 | * PL_sig_pending and PL_psig_pend likewise do not track signals that are pending | |
1334 | * in the sense of being on the system's signal queue in between raising and delivery. | |
1335 | * They are only pending on Perl's deferral list, i.e., they track deferred signals | |
1336 | * awaiting delivery after the current Perl opcode completes and say nothing about | |
1337 | * signals raised but not yet caught in the underlying signal implementation. | |
1338 | */ | |
1339 | ||
2563cec5 IZ |
1340 | #ifndef SIG_PENDING_DIE_COUNT |
1341 | # define SIG_PENDING_DIE_COUNT 120 | |
1342 | #endif | |
1343 | ||
dd374669 AL |
1344 | static void |
1345 | S_raise_signal(pTHX_ int sig) | |
0a8e0eff | 1346 | { |
97aff369 | 1347 | dVAR; |
0a8e0eff NIS |
1348 | /* Set a flag to say this signal is pending */ |
1349 | PL_psig_pend[sig]++; | |
1350 | /* And one to say _a_ signal is pending */ | |
2563cec5 IZ |
1351 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1352 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1353 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
0a8e0eff NIS |
1354 | } |
1355 | ||
1356 | Signal_t | |
8aad04aa | 1357 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1358 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1359 | #else |
0a8e0eff | 1360 | Perl_csighandler(int sig) |
8aad04aa | 1361 | #endif |
0a8e0eff | 1362 | { |
1018e26f NIS |
1363 | #ifdef PERL_GET_SIG_CONTEXT |
1364 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1365 | #else | |
85b332e2 CL |
1366 | dTHX; |
1367 | #endif | |
fe5bfecd | 1368 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
fe5bfecd | 1369 | #endif |
23ada85b | 1370 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1371 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1372 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1373 | #endif |
2e34cc90 | 1374 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1375 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1376 | #ifdef KILL_BY_SIGPRC |
1377 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1378 | #else | |
1379 | exit(1); | |
1380 | #endif | |
1381 | #endif | |
fe5bfecd | 1382 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
fe5bfecd | 1383 | #endif |
853d2c32 RGS |
1384 | if ( |
1385 | #ifdef SIGILL | |
1386 | sig == SIGILL || | |
1387 | #endif | |
1388 | #ifdef SIGBUS | |
1389 | sig == SIGBUS || | |
1390 | #endif | |
1391 | #ifdef SIGSEGV | |
1392 | sig == SIGSEGV || | |
1393 | #endif | |
1394 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 JH |
1395 | /* Call the perl level handler now-- |
1396 | * with risk we may be in malloc() etc. */ | |
6e324d09 | 1397 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1398 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1399 | #else |
1400 | (*PL_sighandlerp)(sig); | |
92807b6d | 1401 | #endif |
4ffa73a3 | 1402 | else |
dd374669 | 1403 | S_raise_signal(aTHX_ sig); |
0a8e0eff NIS |
1404 | } |
1405 | ||
2e34cc90 CL |
1406 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1407 | void | |
1408 | Perl_csighandler_init(void) | |
1409 | { | |
1410 | int sig; | |
27da23d5 | 1411 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1412 | |
1413 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1414 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1415 | dTHX; |
27da23d5 | 1416 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1417 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1418 | #endif |
1419 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1420 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1421 | #endif |
1422 | } | |
27da23d5 | 1423 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1424 | } |
1425 | #endif | |
1426 | ||
0a8e0eff NIS |
1427 | void |
1428 | Perl_despatch_signals(pTHX) | |
1429 | { | |
97aff369 | 1430 | dVAR; |
0a8e0eff NIS |
1431 | int sig; |
1432 | PL_sig_pending = 0; | |
1433 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1434 | if (PL_psig_pend[sig]) { | |
25da4428 JH |
1435 | PERL_BLOCKSIG_ADD(set, sig); |
1436 | PL_psig_pend[sig] = 0; | |
1437 | PERL_BLOCKSIG_BLOCK(set); | |
6e324d09 | 1438 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1439 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1440 | #else |
1441 | (*PL_sighandlerp)(sig); | |
92807b6d | 1442 | #endif |
25da4428 | 1443 | PERL_BLOCKSIG_UNBLOCK(set); |
0a8e0eff NIS |
1444 | } |
1445 | } | |
1446 | } | |
1447 | ||
85e6fe83 | 1448 | int |
864dbfa3 | 1449 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1450 | { |
27da23d5 | 1451 | dVAR; |
79072805 | 1452 | I32 i; |
cbbf8932 | 1453 | SV** svp = NULL; |
2d4fcd5e AJ |
1454 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1455 | * effects (due to closures). We must make sure that the new disposition | |
1456 | * is in place before it is called. | |
1457 | */ | |
cbbf8932 | 1458 | SV* to_dec = NULL; |
e72dc28c | 1459 | STRLEN len; |
2d4fcd5e AJ |
1460 | #ifdef HAS_SIGPROCMASK |
1461 | sigset_t set, save; | |
1462 | SV* save_sv; | |
1463 | #endif | |
d5263905 | 1464 | register const char *s = MgPV_const(mg,len); |
7918f24d NC |
1465 | |
1466 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1467 | ||
748a9306 LW |
1468 | if (*s == '_') { |
1469 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1470 | svp = &PL_diehook; |
748a9306 | 1471 | else if (strEQ(s,"__WARN__")) |
3280af22 | 1472 | svp = &PL_warnhook; |
748a9306 | 1473 | else |
cea2e8a9 | 1474 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1475 | i = 0; |
4633a7c4 | 1476 | if (*svp) { |
9289f461 RGS |
1477 | if (*svp != PERL_WARNHOOK_FATAL) |
1478 | to_dec = *svp; | |
cbbf8932 | 1479 | *svp = NULL; |
4633a7c4 | 1480 | } |
748a9306 LW |
1481 | } |
1482 | else { | |
1483 | i = whichsig(s); /* ...no, a brick */ | |
86d86cad | 1484 | if (i <= 0) { |
e476b1b5 | 1485 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 1486 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); |
748a9306 LW |
1487 | return 0; |
1488 | } | |
2d4fcd5e AJ |
1489 | #ifdef HAS_SIGPROCMASK |
1490 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1491 | sigemptyset(&set); | |
1492 | sigaddset(&set,i); | |
1493 | sigprocmask(SIG_BLOCK, &set, &save); | |
1494 | ENTER; | |
9ff8e806 | 1495 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1496 | SAVEFREESV(save_sv); |
1497 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1498 | #endif | |
1499 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1500 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1501 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1502 | #endif |
23ada85b | 1503 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1504 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1505 | #endif |
2e34cc90 | 1506 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1507 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1508 | #endif |
22c35a8c | 1509 | SvREFCNT_dec(PL_psig_name[i]); |
2d4fcd5e | 1510 | to_dec = PL_psig_ptr[i]; |
46da273f | 1511 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1512 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 1513 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 1514 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 1515 | } |
a0d0e21e | 1516 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
2d4fcd5e | 1517 | if (i) { |
5c1546dc | 1518 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1519 | #ifdef HAS_SIGPROCMASK |
1520 | LEAVE; | |
1521 | #endif | |
1522 | } | |
748a9306 | 1523 | else |
b37c2d43 | 1524 | *svp = SvREFCNT_inc_simple_NN(sv); |
2d4fcd5e AJ |
1525 | if(to_dec) |
1526 | SvREFCNT_dec(to_dec); | |
a0d0e21e LW |
1527 | return 0; |
1528 | } | |
baf38871 | 1529 | s = SvOK(sv) ? SvPV_force(sv,len) : "DEFAULT"; |
748a9306 | 1530 | if (strEQ(s,"IGNORE")) { |
85b332e2 | 1531 | if (i) { |
23ada85b | 1532 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1533 | PL_sig_ignoring[i] = 1; |
5c1546dc | 1534 | (void)rsignal(i, PL_csighandlerp); |
85b332e2 | 1535 | #else |
8aad04aa | 1536 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1537 | #endif |
2d4fcd5e | 1538 | } |
748a9306 LW |
1539 | } |
1540 | else if (strEQ(s,"DEFAULT") || !*s) { | |
1541 | if (i) | |
2e34cc90 CL |
1542 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1543 | { | |
27da23d5 | 1544 | PL_sig_defaulting[i] = 1; |
5c1546dc | 1545 | (void)rsignal(i, PL_csighandlerp); |
2e34cc90 CL |
1546 | } |
1547 | #else | |
8aad04aa | 1548 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1549 | #endif |
748a9306 | 1550 | } |
79072805 | 1551 | else { |
5aabfad6 PP |
1552 | /* |
1553 | * We should warn if HINT_STRICT_REFS, but without | |
1554 | * access to a known hint bit in a known OP, we can't | |
1555 | * tell whether HINT_STRICT_REFS is in force or not. | |
1556 | */ | |
46fc3d4c | 1557 | if (!strchr(s,':') && !strchr(s,'\'')) |
89529cee | 1558 | Perl_sv_insert(aTHX_ sv, 0, 0, STR_WITH_LEN("main::")); |
748a9306 | 1559 | if (i) |
5c1546dc | 1560 | (void)rsignal(i, PL_csighandlerp); |
748a9306 | 1561 | else |
46da273f | 1562 | *svp = SvREFCNT_inc_simple_NN(sv); |
79072805 | 1563 | } |
2d4fcd5e AJ |
1564 | #ifdef HAS_SIGPROCMASK |
1565 | if(i) | |
1566 | LEAVE; | |
1567 | #endif | |
1568 | if(to_dec) | |
1569 | SvREFCNT_dec(to_dec); | |
79072805 LW |
1570 | return 0; |
1571 | } | |
64ca3a65 | 1572 | #endif /* !PERL_MICRO */ |
79072805 LW |
1573 | |
1574 | int | |
864dbfa3 | 1575 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1576 | { |
97aff369 | 1577 | dVAR; |
08aeb9f7 | 1578 | HV* stash; |
7918f24d NC |
1579 | |
1580 | PERL_ARGS_ASSERT_MAGIC_SETISA; | |
8772537c | 1581 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1582 | |
08aeb9f7 BB |
1583 | /* Bail out if destruction is going on */ |
1584 | if(PL_dirty) return 0; | |
1585 | ||
89c14e2e BB |
1586 | /* Skip _isaelem because _isa will handle it shortly */ |
1587 | if (PL_delaymagic & DM_ARRAY && mg->mg_type == PERL_MAGIC_isaelem) | |
1588 | return 0; | |
1589 | ||
70cd14a1 CB |
1590 | /* XXX Once it's possible, we need to |
1591 | detect that our @ISA is aliased in | |
1592 | other stashes, and act on the stashes | |
1593 | of all of the aliases */ | |
1594 | ||
e1a479c5 BB |
1595 | /* The first case occurs via setisa, |
1596 | the second via setisa_elem, which | |
1597 | calls this same magic */ | |
08aeb9f7 BB |
1598 | stash = GvSTASH( |
1599 | SvTYPE(mg->mg_obj) == SVt_PVGV | |
1600 | ? (GV*)mg->mg_obj | |
1601 | : (GV*)SvMAGIC(mg->mg_obj)->mg_obj | |
e1a479c5 BB |
1602 | ); |
1603 | ||
89c14e2e | 1604 | mro_isa_changed_in(stash); |
08aeb9f7 | 1605 | |
463ee0b2 LW |
1606 | return 0; |
1607 | } | |
1608 | ||
1609 | int | |
52b45067 RD |
1610 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1611 | { | |
1612 | dVAR; | |
1613 | HV* stash; | |
1614 | ||
7918f24d NC |
1615 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1616 | ||
52b45067 RD |
1617 | /* Bail out if destruction is going on */ |
1618 | if(PL_dirty) return 0; | |
1619 | ||
1620 | av_clear((AV*)sv); | |
1621 | ||
1622 | /* XXX see comments in magic_setisa */ | |
1623 | stash = GvSTASH( | |
1624 | SvTYPE(mg->mg_obj) == SVt_PVGV | |
1625 | ? (GV*)mg->mg_obj | |
1626 | : (GV*)SvMAGIC(mg->mg_obj)->mg_obj | |
1627 | ); | |
1628 | ||
1629 | mro_isa_changed_in(stash); | |
1630 | ||
1631 | return 0; | |
1632 | } | |
1633 | ||
1634 | int | |
864dbfa3 | 1635 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1636 | { |
97aff369 | 1637 | dVAR; |
7918f24d | 1638 | PERL_ARGS_ASSERT_MAGIC_SETAMAGIC; |
8772537c AL |
1639 | PERL_UNUSED_ARG(sv); |
1640 | PERL_UNUSED_ARG(mg); | |
3280af22 | 1641 | PL_amagic_generation++; |
463ee0b2 | 1642 | |
a0d0e21e LW |
1643 | return 0; |
1644 | } | |
463ee0b2 | 1645 | |
946ec16e | 1646 | int |
864dbfa3 | 1647 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1648 | { |
dd374669 | 1649 | HV * const hv = (HV*)LvTARG(sv); |
6ff81951 | 1650 | I32 i = 0; |
7918f24d NC |
1651 | |
1652 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1653 | PERL_UNUSED_ARG(mg); |
7719e241 | 1654 | |
6ff81951 | 1655 | if (hv) { |
497b47a8 JH |
1656 | (void) hv_iterinit(hv); |
1657 | if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) | |
1658 | i = HvKEYS(hv); | |
1659 | else { | |
1660 | while (hv_iternext(hv)) | |
1661 | i++; | |
1662 | } | |
6ff81951 GS |
1663 | } |
1664 | ||
1665 | sv_setiv(sv, (IV)i); | |
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | int | |
864dbfa3 | 1670 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1671 | { |
7918f24d | 1672 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1673 | PERL_UNUSED_ARG(mg); |
946ec16e PP |
1674 | if (LvTARG(sv)) { |
1675 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e PP |
1676 | } |
1677 | return 0; | |
ac27b0f5 | 1678 | } |
946ec16e | 1679 | |
e336de0d | 1680 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1681 | STATIC int |
e1ec3a88 | 1682 | S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val) |
a0d0e21e | 1683 | { |
97aff369 | 1684 | dVAR; |
a0d0e21e | 1685 | dSP; |
463ee0b2 | 1686 | |
7918f24d NC |
1687 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1688 | ||
924508f0 GS |
1689 | PUSHMARK(SP); |
1690 | EXTEND(SP, n); | |
33c27489 | 1691 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 | 1692 | if (n > 1) { |
93965878 | 1693 | if (mg->mg_ptr) { |
565764a8 | 1694 | if (mg->mg_len >= 0) |
6e449a3a | 1695 | mPUSHp(mg->mg_ptr, mg->mg_len); |
565764a8 | 1696 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1697 | PUSHs((SV*)mg->mg_ptr); |
1698 | } | |
14befaf4 | 1699 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { |
6e449a3a | 1700 | mPUSHi(mg->mg_len); |
93965878 NIS |
1701 | } |
1702 | } | |
1703 | if (n > 2) { | |
1704 | PUSHs(val); | |
88e89b8a | 1705 | } |
463ee0b2 LW |
1706 | PUTBACK; |
1707 | ||
864dbfa3 | 1708 | return call_method(meth, flags); |
946ec16e PP |
1709 | } |
1710 | ||
76e3520e | 1711 | STATIC int |
e1ec3a88 | 1712 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1713 | { |
27da23d5 | 1714 | dVAR; dSP; |
463ee0b2 | 1715 | |
7918f24d NC |
1716 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1717 | ||
a0d0e21e LW |
1718 | ENTER; |
1719 | SAVETMPS; | |
e788e7d3 | 1720 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1721 | |
33c27489 | 1722 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1723 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1724 | } |
463ee0b2 | 1725 | |
d3acc0f7 | 1726 | POPSTACK; |
a0d0e21e LW |
1727 | FREETMPS; |
1728 | LEAVE; | |
1729 | return 0; | |
1730 | } | |
463ee0b2 | 1731 | |
a0d0e21e | 1732 | int |
864dbfa3 | 1733 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1734 | { |
7918f24d NC |
1735 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1736 | ||
a0d0e21e LW |
1737 | if (mg->mg_ptr) |
1738 | mg->mg_flags |= MGf_GSKIP; | |
58f82c5c | 1739 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1740 | return 0; |
1741 | } | |
1742 | ||
1743 | int | |
864dbfa3 | 1744 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1745 | { |
27da23d5 | 1746 | dVAR; dSP; |
7918f24d NC |
1747 | |
1748 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1749 | ||
a60c0954 | 1750 | ENTER; |
e788e7d3 | 1751 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1752 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1753 | POPSTACK; |
a60c0954 | 1754 | LEAVE; |
463ee0b2 LW |
1755 | return 0; |
1756 | } | |
1757 | ||
1758 | int | |
864dbfa3 | 1759 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1760 | { |
7918f24d NC |
1761 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1762 | ||
a0d0e21e LW |
1763 | return magic_methpack(sv,mg,"DELETE"); |
1764 | } | |
463ee0b2 | 1765 | |
93965878 NIS |
1766 | |
1767 | U32 | |
864dbfa3 | 1768 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1769 | { |
27da23d5 | 1770 | dVAR; dSP; |
22846ab4 | 1771 | I32 retval = 0; |
93965878 | 1772 | |
7918f24d NC |
1773 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1774 | ||
93965878 NIS |
1775 | ENTER; |
1776 | SAVETMPS; | |
e788e7d3 | 1777 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1778 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1779 | sv = *PL_stack_sp--; |
22846ab4 AB |
1780 | retval = SvIV(sv)-1; |
1781 | if (retval < -1) | |
1782 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1783 | } |
d3acc0f7 | 1784 | POPSTACK; |
93965878 NIS |
1785 | FREETMPS; |
1786 | LEAVE; | |
22846ab4 | 1787 | return (U32) retval; |
93965878 NIS |
1788 | } |
1789 | ||
cea2e8a9 GS |
1790 | int |
1791 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1792 | { |
27da23d5 | 1793 | dVAR; dSP; |
463ee0b2 | 1794 | |
7918f24d NC |
1795 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1796 | ||
e336de0d | 1797 | ENTER; |
e788e7d3 | 1798 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1799 | PUSHMARK(SP); |
33c27489 | 1800 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1801 | PUTBACK; |
864dbfa3 | 1802 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1803 | POPSTACK; |
a60c0954 | 1804 | LEAVE; |
a3bcc51e | 1805 | |
463ee0b2 LW |
1806 | return 0; |
1807 | } | |
1808 | ||
1809 | int | |
864dbfa3 | 1810 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1811 | { |
27da23d5 | 1812 | dVAR; dSP; |
666ea192 | 1813 | const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 | 1814 | |
7918f24d NC |
1815 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1816 | ||
463ee0b2 | 1817 | ENTER; |
a0d0e21e | 1818 | SAVETMPS; |
e788e7d3 | 1819 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1820 | PUSHMARK(SP); |
1821 | EXTEND(SP, 2); | |
33c27489 | 1822 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1823 | if (SvOK(key)) |
1824 | PUSHs(key); | |
1825 | PUTBACK; | |
1826 | ||
864dbfa3 | 1827 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1828 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1829 | |
d3acc0f7 | 1830 | POPSTACK; |
a0d0e21e LW |
1831 | FREETMPS; |
1832 | LEAVE; | |
79072805 LW |
1833 | return 0; |
1834 | } | |
1835 | ||
1836 | int | |
1146e912 | 1837 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1838 | { |
7918f24d NC |
1839 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1840 | ||
a0d0e21e | 1841 | return magic_methpack(sv,mg,"EXISTS"); |
ac27b0f5 | 1842 | } |
a0d0e21e | 1843 | |
a3bcc51e TP |
1844 | SV * |
1845 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1846 | { | |
27da23d5 | 1847 | dVAR; dSP; |
5fcbf73d | 1848 | SV *retval; |
8772537c AL |
1849 | SV * const tied = SvTIED_obj((SV*)hv, mg); |
1850 | HV * const pkg = SvSTASH((SV*)SvRV(tied)); | |
a3bcc51e | 1851 | |
7918f24d NC |
1852 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
1853 | ||
a3bcc51e TP |
1854 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1855 | SV *key; | |
bfcb3514 | 1856 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1857 | /* we are in an iteration so the hash cannot be empty */ |
1858 | return &PL_sv_yes; | |
1859 | /* no xhv_eiter so now use FIRSTKEY */ | |
1860 | key = sv_newmortal(); | |
1861 | magic_nextpack((SV*)hv, mg, key); | |
bfcb3514 | 1862 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1863 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1864 | } | |
1865 | ||
1866 | /* there is a SCALAR method that we can call */ | |
1867 | ENTER; | |
1868 | PUSHSTACKi(PERLSI_MAGIC); | |
1869 | PUSHMARK(SP); | |
1870 | EXTEND(SP, 1); | |
1871 | PUSHs(tied); | |
1872 | PUTBACK; | |
1873 | ||
1874 | if (call_method("SCALAR", G_SCALAR)) | |
1875 | retval = *PL_stack_sp--; | |
5fcbf73d AL |
1876 | else |
1877 | retval = &PL_sv_undef; | |
a3bcc51e TP |
1878 | POPSTACK; |
1879 | LEAVE; | |
1880 | return retval; | |
1881 | } | |
1882 | ||
a0d0e21e | 1883 | int |
864dbfa3 | 1884 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1885 | { |
97aff369 | 1886 | dVAR; |
8772537c AL |
1887 | GV * const gv = PL_DBline; |
1888 | const I32 i = SvTRUE(sv); | |
1889 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 1890 | atoi(MgPV_nolen_const(mg)), FALSE); |
7918f24d NC |
1891 | |
1892 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
1893 | ||
8772537c AL |
1894 | if (svp && SvIOKp(*svp)) { |
1895 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
1896 | if (o) { | |
1897 | /* set or clear breakpoint in the relevant control op */ | |
1898 | if (i) | |
1899 | o->op_flags |= OPf_SPECIAL; | |
1900 | else | |
1901 | o->op_flags &= ~OPf_SPECIAL; | |
1902 | } | |
5df8de69 | 1903 | } |
79072805 LW |
1904 | return 0; |
1905 | } | |
1906 | ||
1907 | int | |
8772537c | 1908 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 1909 | { |
97aff369 | 1910 | dVAR; |
8772537c | 1911 | const AV * const obj = (AV*)mg->mg_obj; |
7918f24d NC |
1912 | |
1913 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
1914 | ||
83bf042f | 1915 | if (obj) { |
fc15ae8f | 1916 | sv_setiv(sv, AvFILL(obj) + CopARYBASE_get(PL_curcop)); |
83bf042f NC |
1917 | } else { |
1918 | SvOK_off(sv); | |
1919 | } | |
79072805 LW |
1920 | return 0; |
1921 | } | |
1922 | ||
1923 | int | |
864dbfa3 | 1924 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1925 | { |
97aff369 | 1926 | dVAR; |
8772537c | 1927 | AV * const obj = (AV*)mg->mg_obj; |
7918f24d NC |
1928 | |
1929 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
1930 | ||
83bf042f | 1931 | if (obj) { |
fc15ae8f | 1932 | av_fill(obj, SvIV(sv) - CopARYBASE_get(PL_curcop)); |
83bf042f NC |
1933 | } else { |
1934 | if (ckWARN(WARN_MISC)) | |
1935 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
1936 | "Attempt to set length of freed array"); | |
1937 | } | |
1938 | return 0; | |
1939 | } | |
1940 | ||
1941 | int | |
1942 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) | |
1943 | { | |
97aff369 | 1944 | dVAR; |
7918f24d NC |
1945 | |
1946 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; | |
53c1dcc0 | 1947 | PERL_UNUSED_ARG(sv); |
7918f24d | 1948 | |
94f3782b DM |
1949 | /* during global destruction, mg_obj may already have been freed */ |
1950 | if (PL_in_clean_all) | |
1ea47f64 | 1951 | return 0; |
94f3782b | 1952 | |
83bf042f NC |
1953 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
1954 | ||
1955 | if (mg) { | |
1956 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
1957 | reference. Hence the we (the array) are about to go away with it | |
1958 | still pointing at us. Clear its pointer, else it would be pointing | |
1959 | at free memory. See the comment in sv_magic about reference loops, | |
1960 | and why it can't own a reference to us. */ | |
1961 | mg->mg_obj = 0; | |
1962 | } | |
a0d0e21e LW |
1963 | return 0; |
1964 | } | |
1965 | ||
1966 | int | |
864dbfa3 | 1967 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1968 | { |
97aff369 | 1969 | dVAR; |
8772537c | 1970 | SV* const lsv = LvTARG(sv); |
7918f24d NC |
1971 | |
1972 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
3881461a | 1973 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 1974 | |
a0d0e21e | 1975 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
1976 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
1977 | if (found && found->mg_len >= 0) { | |
1978 | I32 i = found->mg_len; | |
7e2040f0 | 1979 | if (DO_UTF8(lsv)) |
a0ed51b3 | 1980 | sv_pos_b2u(lsv, &i); |
fc15ae8f | 1981 | sv_setiv(sv, i + CopARYBASE_get(PL_curcop)); |
a0d0e21e LW |
1982 | return 0; |
1983 | } | |
1984 | } | |
0c34ef67 | 1985 | SvOK_off(sv); |
a0d0e21e LW |
1986 | return 0; |
1987 | } | |
1988 | ||
1989 | int | |
864dbfa3 | 1990 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1991 | { |
97aff369 | 1992 | dVAR; |
8772537c | 1993 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
1994 | SSize_t pos; |
1995 | STRLEN len; | |
c00206c8 | 1996 | STRLEN ulen = 0; |
53d44271 | 1997 | MAGIC* found; |
a0d0e21e | 1998 | |
7918f24d | 1999 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
3881461a | 2000 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2001 | |
a0d0e21e | 2002 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
2003 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
2004 | else | |
2005 | found = NULL; | |
2006 | if (!found) { | |
a0d0e21e LW |
2007 | if (!SvOK(sv)) |
2008 | return 0; | |
d83f0a82 NC |
2009 | #ifdef PERL_OLD_COPY_ON_WRITE |
2010 | if (SvIsCOW(lsv)) | |
2011 | sv_force_normal_flags(lsv, 0); | |
2012 | #endif | |
3881461a | 2013 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 2014 | NULL, 0); |
a0d0e21e LW |
2015 | } |
2016 | else if (!SvOK(sv)) { | |
3881461a | 2017 | found->mg_len = -1; |
a0d0e21e LW |
2018 | return 0; |
2019 | } | |
2020 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
2021 | ||
fc15ae8f | 2022 | pos = SvIV(sv) - CopARYBASE_get(PL_curcop); |
a0ed51b3 | 2023 | |
7e2040f0 | 2024 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
2025 | ulen = sv_len_utf8(lsv); |
2026 | if (ulen) | |
2027 | len = ulen; | |
a0ed51b3 LW |
2028 | } |
2029 | ||
a0d0e21e LW |
2030 | if (pos < 0) { |
2031 | pos += len; | |
2032 | if (pos < 0) | |
2033 | pos = 0; | |
2034 | } | |
eb160463 | 2035 | else if (pos > (SSize_t)len) |
a0d0e21e | 2036 | pos = len; |
a0ed51b3 LW |
2037 | |
2038 | if (ulen) { | |
2039 | I32 p = pos; | |
2040 | sv_pos_u2b(lsv, &p, 0); | |
2041 | pos = p; | |
2042 | } | |
727405f8 | 2043 | |
3881461a AL |
2044 | found->mg_len = pos; |
2045 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 2046 | |
79072805 LW |
2047 | return 0; |
2048 | } | |
2049 | ||
2050 | int | |
864dbfa3 | 2051 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2052 | { |
2053 | STRLEN len; | |
35a4481c | 2054 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2055 | const char * const tmps = SvPV_const(lsv,len); |
6ff81951 GS |
2056 | I32 offs = LvTARGOFF(sv); |
2057 | I32 rem = LvTARGLEN(sv); | |
7918f24d NC |
2058 | |
2059 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2060 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2061 | |
9aa983d2 JH |
2062 | if (SvUTF8(lsv)) |
2063 | sv_pos_u2b(lsv, &offs, &rem); | |
eb160463 | 2064 | if (offs > (I32)len) |
6ff81951 | 2065 | offs = len; |
eb160463 | 2066 | if (rem + offs > (I32)len) |
6ff81951 GS |
2067 | rem = len - offs; |
2068 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
9aa983d2 | 2069 | if (SvUTF8(lsv)) |
2ef4b674 | 2070 | SvUTF8_on(sv); |
6ff81951 GS |
2071 | return 0; |
2072 | } | |
2073 | ||
2074 | int | |
864dbfa3 | 2075 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2076 | { |
97aff369 | 2077 | dVAR; |
9aa983d2 | 2078 | STRLEN len; |
5fcbf73d | 2079 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2080 | SV * const lsv = LvTARG(sv); |
9aa983d2 JH |
2081 | I32 lvoff = LvTARGOFF(sv); |
2082 | I32 lvlen = LvTARGLEN(sv); | |
7918f24d NC |
2083 | |
2084 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2085 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2086 | |
1aa99e6b | 2087 | if (DO_UTF8(sv)) { |
9aa983d2 JH |
2088 | sv_utf8_upgrade(lsv); |
2089 | sv_pos_u2b(lsv, &lvoff, &lvlen); | |
2090 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
b76f3ce2 | 2091 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
2092 | SvUTF8_on(lsv); |
2093 | } | |
9bf12eaf | 2094 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 2095 | const char *utf8; |
9aa983d2 | 2096 | sv_pos_u2b(lsv, &lvoff, &lvlen); |
b76f3ce2 | 2097 | LvTARGLEN(sv) = len; |
5fcbf73d AL |
2098 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
2099 | sv_insert(lsv, lvoff, lvlen, utf8, len); | |
2100 | Safefree(utf8); | |
1aa99e6b | 2101 | } |
b76f3ce2 GB |
2102 | else { |
2103 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
2104 | LvTARGLEN(sv) = len; | |
2105 | } | |
2106 | ||
1aa99e6b | 2107 | |
79072805 LW |
2108 | return 0; |
2109 | } | |
2110 | ||
2111 | int | |
864dbfa3 | 2112 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2113 | { |
97aff369 | 2114 | dVAR; |
7918f24d NC |
2115 | |
2116 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; | |
8772537c | 2117 | PERL_UNUSED_ARG(sv); |
7918f24d | 2118 | |
27cc343c | 2119 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2120 | return 0; |
2121 | } | |
2122 | ||
2123 | int | |
864dbfa3 | 2124 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2125 | { |
97aff369 | 2126 | dVAR; |
7918f24d NC |
2127 | |
2128 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; | |
8772537c | 2129 | PERL_UNUSED_ARG(sv); |
7918f24d | 2130 | |
b01e650a DM |
2131 | /* update taint status */ |
2132 | if (PL_tainted) | |
2133 | mg->mg_len |= 1; | |
2134 | else | |
2135 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2136 | return 0; |
2137 | } | |
2138 | ||
2139 | int | |
864dbfa3 | 2140 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2141 | { |
35a4481c | 2142 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2143 | |
2144 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2145 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2146 | |
6136c704 AL |
2147 | if (lsv) |
2148 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2149 | else | |
0c34ef67 | 2150 | SvOK_off(sv); |
6ff81951 | 2151 | |
6ff81951 GS |
2152 | return 0; |
2153 | } | |
2154 | ||
2155 | int | |
864dbfa3 | 2156 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2157 | { |
7918f24d | 2158 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2159 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2160 | do_vecset(sv); /* XXX slurp this routine */ |
2161 | return 0; | |
2162 | } | |
2163 | ||
2164 | int | |
864dbfa3 | 2165 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 2166 | { |
97aff369 | 2167 | dVAR; |
a0714e2c | 2168 | SV *targ = NULL; |
7918f24d NC |
2169 | |
2170 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2171 | ||
5f05dabc | 2172 | if (LvTARGLEN(sv)) { |
68dc0745 | 2173 | if (mg->mg_obj) { |
8772537c AL |
2174 | SV * const ahv = LvTARG(sv); |
2175 | HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); | |
6d822dc4 MS |
2176 | if (he) |
2177 | targ = HeVAL(he); | |
68dc0745 PP |
2178 | } |
2179 | else { | |
8772537c | 2180 | AV* const av = (AV*)LvTARG(sv); |
68dc0745 PP |
2181 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2182 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2183 | } | |
46da273f | 2184 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 PP |
2185 | /* somebody else defined it for us */ |
2186 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2187 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 PP |
2188 | LvTARGLEN(sv) = 0; |
2189 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2190 | mg->mg_obj = NULL; |
68dc0745 PP |
2191 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2192 | } | |
5f05dabc | 2193 | } |
71be2cbc PP |
2194 | else |
2195 | targ = LvTARG(sv); | |
3280af22 | 2196 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc PP |
2197 | return 0; |
2198 | } | |
2199 | ||
2200 | int | |
864dbfa3 | 2201 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2202 | { |
7918f24d | 2203 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2204 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2205 | if (LvTARGLEN(sv)) |
68dc0745 PP |
2206 | vivify_defelem(sv); |
2207 | if (LvTARG(sv)) { | |
5f05dabc | 2208 | sv_setsv(LvTARG(sv), sv); |
68dc0745 PP |
2209 | SvSETMAGIC(LvTARG(sv)); |
2210 | } | |
5f05dabc PP |
2211 | return 0; |
2212 | } | |
2213 | ||
71be2cbc | 2214 | void |
864dbfa3 | 2215 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2216 | { |
97aff369 | 2217 | dVAR; |
74e13ce4 | 2218 | MAGIC *mg; |
a0714e2c | 2219 | SV *value = NULL; |
71be2cbc | 2220 | |
7918f24d NC |
2221 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2222 | ||
14befaf4 | 2223 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2224 | return; |
68dc0745 | 2225 | if (mg->mg_obj) { |
8772537c AL |
2226 | SV * const ahv = LvTARG(sv); |
2227 | HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); | |
6d822dc4 MS |
2228 | if (he) |
2229 | value = HeVAL(he); | |
3280af22 | 2230 | if (!value || value == &PL_sv_undef) |
be2597df | 2231 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2232 | } |
68dc0745 | 2233 | else { |
8772537c | 2234 | AV* const av = (AV*)LvTARG(sv); |
5aabfad6 | 2235 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2236 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2237 | else { |
d4c19fe8 | 2238 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2239 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2240 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 PP |
2241 | } |
2242 | } | |
b37c2d43 | 2243 | SvREFCNT_inc_simple_void(value); |
68dc0745 PP |
2244 | SvREFCNT_dec(LvTARG(sv)); |
2245 | LvTARG(sv) = value; | |
71be2cbc | 2246 | LvTARGLEN(sv) = 0; |
68dc0745 | 2247 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2248 | mg->mg_obj = NULL; |
68dc0745 | 2249 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc PP |
2250 | } |
2251 | ||
2252 | int | |
864dbfa3 | 2253 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2254 | { |
7918f24d | 2255 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
86f55936 | 2256 | return Perl_sv_kill_backrefs(aTHX_ sv, (AV*)mg->mg_obj); |
810b8aa5 GS |
2257 | } |
2258 | ||
2259 | int | |
864dbfa3 | 2260 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2261 | { |
7918f24d | 2262 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2263 | PERL_UNUSED_CONTEXT; |
565764a8 | 2264 | mg->mg_len = -1; |
c6496cc7 | 2265 | SvSCREAM_off(sv); |
93a17b20 LW |
2266 | return 0; |
2267 | } | |
2268 | ||
2269 | int | |
864dbfa3 | 2270 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2271 | { |
35a4481c | 2272 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2273 | |
7918f24d NC |
2274 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2275 | ||
79072805 | 2276 | if (uf && uf->uf_set) |
24f81a43 | 2277 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2278 | return 0; |
2279 | } | |
2280 | ||
c277df42 | 2281 | int |
faf82a0b AE |
2282 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2283 | { | |
488344d2 | 2284 | const char type = mg->mg_type; |
7918f24d NC |
2285 | |
2286 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2287 | ||
488344d2 NC |
2288 | if (type == PERL_MAGIC_qr) { |
2289 | } else if (type == PERL_MAGIC_bm) { | |
2290 | SvTAIL_off(sv); | |
2291 | SvVALID_off(sv); | |
2292 | } else { | |
2293 | assert(type == PERL_MAGIC_fm); | |
2294 | SvCOMPILED_off(sv); | |
2295 | } | |
2296 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2297 | } |
2298 | ||
7a4c00b4 | 2299 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2300 | int |
864dbfa3 | 2301 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2302 | { |
7918f24d NC |
2303 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2304 | ||
bbce6d69 | 2305 | /* |
838b5b74 | 2306 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 PP |
2307 | * and vanished with a faint plop. |
2308 | */ | |
96a5add6 | 2309 | PERL_UNUSED_CONTEXT; |
8772537c | 2310 | PERL_UNUSED_ARG(sv); |
7a4c00b4 PP |
2311 | if (mg->mg_ptr) { |
2312 | Safefree(mg->mg_ptr); | |
2313 | mg->mg_ptr = NULL; | |
565764a8 | 2314 | mg->mg_len = -1; |
7a4c00b4 | 2315 | } |
bbce6d69 PP |
2316 | return 0; |
2317 | } | |
7a4c00b4 | 2318 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2319 | |
7e8c5dac HS |
2320 | /* Just clear the UTF-8 cache data. */ |
2321 | int | |
2322 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2323 | { | |
7918f24d | 2324 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2325 | PERL_UNUSED_CONTEXT; |
8772537c | 2326 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2327 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2328 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2329 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2330 | return 0; | |
2331 | } | |
2332 | ||
bbce6d69 | 2333 | int |
864dbfa3 | 2334 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2335 | { |
97aff369 | 2336 | dVAR; |
e1ec3a88 | 2337 | register const char *s; |
2fdbfb4d AB |
2338 | register I32 paren; |
2339 | register const REGEXP * rx; | |
2340 | const char * const remaining = mg->mg_ptr + 1; | |
79072805 | 2341 | I32 i; |
8990e307 | 2342 | STRLEN len; |
2fdbfb4d | 2343 | |
7918f24d NC |
2344 | PERL_ARGS_ASSERT_MAGIC_SET; |
2345 | ||
79072805 | 2346 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
2347 | case '\015': /* $^MATCH */ |
2348 | if (strEQ(remaining, "ATCH")) | |
2349 | goto do_match; | |
2350 | case '`': /* ${^PREMATCH} caught below */ | |
2351 | do_prematch: | |
f1b875a0 | 2352 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
2353 | goto setparen; |
2354 | case '\'': /* ${^POSTMATCH} caught below */ | |
2355 | do_postmatch: | |
f1b875a0 | 2356 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
2357 | goto setparen; |
2358 | case '&': | |
2359 | do_match: | |
f1b875a0 | 2360 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d AB |
2361 | goto setparen; |
2362 | case '1': case '2': case '3': case '4': | |
2363 | case '5': case '6': case '7': case '8': case '9': | |
104a8018 | 2364 | paren = atoi(mg->mg_ptr); |
2fdbfb4d | 2365 | setparen: |
1e05feb3 | 2366 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
2367 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
2368 | break; | |
1e05feb3 | 2369 | } else { |
2fdbfb4d AB |
2370 | /* Croak with a READONLY error when a numbered match var is |
2371 | * set without a previous pattern match. Unless it's C<local $1> | |
2372 | */ | |
2373 | if (!PL_localizing) { | |
2374 | Perl_croak(aTHX_ PL_no_modify); | |
2375 | } | |
2376 | } | |
748a9306 | 2377 | case '\001': /* ^A */ |
3280af22 | 2378 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 2379 | break; |
49460fe6 | 2380 | case '\003': /* ^C */ |
38ab35f8 | 2381 | PL_minus_c = (bool)SvIV(sv); |
49460fe6 NIS |
2382 | break; |
2383 | ||
79072805 | 2384 | case '\004': /* ^D */ |
b4ab917c | 2385 | #ifdef DEBUGGING |
b83604b4 | 2386 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2387 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
79072805 | 2388 | DEBUG_x(dump_all()); |
b4ab917c | 2389 | #else |
38ab35f8 | 2390 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2391 | #endif |
79072805 | 2392 | break; |
28f23441 | 2393 | case '\005': /* ^E */ |
d0063567 | 2394 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 2395 | #ifdef MACOS_TRADITIONAL |
38ab35f8 | 2396 | gMacPerl_OSErr = SvIV(sv); |
28f23441 | 2397 | #else |
cd39f2b6 | 2398 | # ifdef VMS |
38ab35f8 | 2399 | set_vaxc_errno(SvIV(sv)); |
048c1ddf | 2400 | # else |
cd39f2b6 | 2401 | # ifdef WIN32 |
d0063567 | 2402 | SetLastError( SvIV(sv) ); |
cd39f2b6 | 2403 | # else |
9fed8b87 | 2404 | # ifdef OS2 |
38ab35f8 | 2405 | os2_setsyserrno(SvIV(sv)); |
9fed8b87 | 2406 | # else |
d0063567 | 2407 | /* will anyone ever use this? */ |
38ab35f8 | 2408 | SETERRNO(SvIV(sv), 4); |
cd39f2b6 | 2409 | # endif |
048c1ddf IZ |
2410 | # endif |
2411 | # endif | |
22fae026 | 2412 | #endif |
d0063567 DK |
2413 | } |
2414 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
2415 | if (PL_encoding) | |
2416 | SvREFCNT_dec(PL_encoding); | |
2417 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2418 | PL_encoding = newSVsv(sv); | |
2419 | } | |
2420 | else { | |
a0714e2c | 2421 | PL_encoding = NULL; |
d0063567 DK |
2422 | } |
2423 | } | |
2424 | break; | |
79072805 | 2425 | case '\006': /* ^F */ |
38ab35f8 | 2426 | PL_maxsysfd = SvIV(sv); |
79072805 | 2427 | break; |
a0d0e21e | 2428 | case '\010': /* ^H */ |
38ab35f8 | 2429 | PL_hints = SvIV(sv); |
a0d0e21e | 2430 | break; |
9d116dd7 | 2431 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2432 | Safefree(PL_inplace); |
bd61b366 | 2433 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2434 | break; |
28f23441 | 2435 | case '\017': /* ^O */ |
ac27b0f5 | 2436 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2437 | Safefree(PL_osname); |
bd61b366 | 2438 | PL_osname = NULL; |
3511154c DM |
2439 | if (SvOK(sv)) { |
2440 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2441 | PL_osname = savesvpv(sv); |
3511154c | 2442 | } |
ac27b0f5 NIS |
2443 | } |
2444 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2445 | STRLEN len; |
2446 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2447 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 NC |
2448 | SV *tmp; |
2449 | struct refcounted_he *tmp_he; | |
2450 | ||
2451 | ||
2452 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
2453 | PL_hints | |
2454 | |= HINT_LOCALIZE_HH | HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
2455 | ||
2456 | /* Opening for input is more common than opening for output, so | |
2457 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 NC |
2458 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
2459 | SVs_TEMP | SvUTF8(sv)) | |
2460 | : newSVpvn_flags("", 0, SVs_TEMP | SvUTF8(sv)); | |
8b850bd5 NC |
2461 | |
2462 | tmp_he | |
2463 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
84bafc02 NC |
2464 | newSVpvs_flags("open>", SVs_TEMP), |
2465 | tmp); | |
8b850bd5 NC |
2466 | |
2467 | /* The UTF-8 setting is carried over */ | |
2468 | sv_setpvn(tmp, start, out ? (STRLEN)(out - start) : len); | |
2469 | ||
11bcd5da | 2470 | PL_compiling.cop_hints_hash |
8b850bd5 | 2471 | = Perl_refcounted_he_new(aTHX_ tmp_he, |
84bafc02 NC |
2472 | newSVpvs_flags("open<", SVs_TEMP), |
2473 | tmp); | |
ac27b0f5 | 2474 | } |
28f23441 | 2475 | break; |
79072805 | 2476 | case '\020': /* ^P */ |
2fdbfb4d AB |
2477 | if (*remaining == '\0') { /* ^P */ |
2478 | PL_perldb = SvIV(sv); | |
2479 | if (PL_perldb && !PL_DBsingle) | |
2480 | init_debugger(); | |
2481 | break; | |
2482 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2483 | goto do_prematch; | |
2484 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
2485 | goto do_postmatch; | |
2486 | } | |
79072805 | 2487 | case '\024': /* ^T */ |
88e89b8a | 2488 | #ifdef BIG_TIME |
6b88bc9c | 2489 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2490 | #else |
38ab35f8 | 2491 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2492 | #endif |
79072805 | 2493 | break; |
e07ea26a NC |
2494 | case '\025': /* ^UTF8CACHE */ |
2495 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2496 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2497 | } | |
2498 | break; | |
fde18df1 | 2499 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2500 | if (*(mg->mg_ptr+1) == '\0') { |
2501 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2502 | i = SvIV(sv); |
ac27b0f5 | 2503 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2504 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2505 | } |
599cee73 | 2506 | } |
0a378802 | 2507 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2508 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2509 | if (!SvPOK(sv) && PL_localizing) { |
2510 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2511 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2512 | break; |
2513 | } | |
f4fc7782 | 2514 | { |
b5477537 | 2515 | STRLEN len, i; |
d3a7d8c7 | 2516 | int accumulate = 0 ; |
f4fc7782 | 2517 | int any_fatals = 0 ; |
b83604b4 | 2518 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2519 | for (i = 0 ; i < len ; ++i) { |
2520 | accumulate |= ptr[i] ; | |
2521 | any_fatals |= (ptr[i] & 0xAA) ; | |
2522 | } | |
4243c432 NC |
2523 | if (!accumulate) { |
2524 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2525 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2526 | PL_compiling.cop_warnings = pWARN_NONE; | |
2527 | } | |
72dc9ed5 NC |
2528 | /* Yuck. I can't see how to abstract this: */ |
2529 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2530 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2531 | if (!specialWARN(PL_compiling.cop_warnings)) |
2532 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2533 | PL_compiling.cop_warnings = pWARN_ALL; |
2534 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2535 | } |
d3a7d8c7 | 2536 | else { |
72dc9ed5 NC |
2537 | STRLEN len; |
2538 | const char *const p = SvPV_const(sv, len); | |
2539 | ||
2540 | PL_compiling.cop_warnings | |
8ee4cf24 | 2541 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2542 | p, len); |
2543 | ||
d3a7d8c7 GS |
2544 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2545 | PL_dowarn |= G_WARN_ONCE ; | |
2546 | } | |
f4fc7782 | 2547 | |
d3a7d8c7 | 2548 | } |
4438c4b7 | 2549 | } |
971a9dd3 | 2550 | } |
79072805 LW |
2551 | break; |
2552 | case '.': | |
3280af22 NIS |
2553 | if (PL_localizing) { |
2554 | if (PL_localizing == 1) | |
7766f137 | 2555 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2556 | } |
3280af22 | 2557 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2558 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2559 | break; |
2560 | case '^': | |
3280af22 | 2561 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2562 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
f776e3cd | 2563 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); |
79072805 LW |
2564 | break; |
2565 | case '~': | |
3280af22 | 2566 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2567 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
f776e3cd | 2568 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); |
79072805 LW |
2569 | break; |
2570 | case '=': | |
38ab35f8 | 2571 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2572 | break; |
2573 | case '-': | |
38ab35f8 | 2574 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
3280af22 NIS |
2575 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
2576 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
2577 | break; |
2578 | case '%': | |
38ab35f8 | 2579 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2580 | break; |
2581 | case '|': | |
4b65379b | 2582 | { |
8772537c | 2583 | IO * const io = GvIOp(PL_defoutgv); |
720f287d AB |
2584 | if(!io) |
2585 | break; | |
38ab35f8 | 2586 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2587 | IoFLAGS(io) &= ~IOf_FLUSH; |
2588 | else { | |
2589 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2590 | PerlIO *ofp = IoOFP(io); | |
2591 | if (ofp) | |
2592 | (void)PerlIO_flush(ofp); | |
2593 | IoFLAGS(io) |= IOf_FLUSH; | |
2594 | } | |
2595 | } | |
79072805 LW |
2596 | } |
2597 | break; | |
79072805 | 2598 | case '/': |
3280af22 | 2599 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2600 | PL_rs = newSVsv(sv); |
79072805 LW |
2601 | break; |
2602 | case '\\': | |
7889fe52 NIS |
2603 | if (PL_ors_sv) |
2604 | SvREFCNT_dec(PL_ors_sv); | |
009c130f | 2605 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2606 | PL_ors_sv = newSVsv(sv); |
009c130f | 2607 | } |
e3c19b7b | 2608 | else { |
a0714e2c | 2609 | PL_ors_sv = NULL; |
e3c19b7b | 2610 | } |
79072805 LW |
2611 | break; |
2612 | case ',': | |
7889fe52 NIS |
2613 | if (PL_ofs_sv) |
2614 | SvREFCNT_dec(PL_ofs_sv); | |
2615 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2616 | PL_ofs_sv = newSVsv(sv); | |
2617 | } | |
2618 | else { | |
a0714e2c | 2619 | PL_ofs_sv = NULL; |
7889fe52 | 2620 | } |
79072805 | 2621 | break; |
79072805 | 2622 | case '[': |
38ab35f8 | 2623 | CopARYBASE_set(&PL_compiling, SvIV(sv)); |
79072805 LW |
2624 | break; |
2625 | case '?': | |
ff0cee69 | 2626 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
2627 | if (PL_localizing == 2) { |
2628 | PL_statusvalue = LvTARGOFF(sv); | |
2629 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 PP |
2630 | } |
2631 | else | |
2632 | #endif | |
2633 | #ifdef VMSISH_STATUS | |
2634 | if (VMSISH_STATUS) | |
fb38d079 | 2635 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 PP |
2636 | else |
2637 | #endif | |
38ab35f8 | 2638 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2639 | break; |
2640 | case '!': | |
93189314 JH |
2641 | { |
2642 | #ifdef VMS | |
2643 | # define PERL_VMS_BANG vaxc$errno | |
2644 | #else | |
2645 | # define PERL_VMS_BANG 0 | |
2646 | #endif | |
91487cfc | 2647 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2648 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2649 | } | |
79072805 LW |
2650 | break; |
2651 | case '<': | |
38ab35f8 | 2652 | PL_uid = SvIV(sv); |
3280af22 NIS |
2653 | if (PL_delaymagic) { |
2654 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2655 | break; /* don't do magic till later */ |
2656 | } | |
2657 | #ifdef HAS_SETRUID | |
b28d0864 | 2658 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2659 | #else |
2660 | #ifdef HAS_SETREUID | |
3280af22 | 2661 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2662 | #else |
85e6fe83 | 2663 | #ifdef HAS_SETRESUID |
b28d0864 | 2664 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2665 | #else |
75870ed3 | 2666 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2667 | #ifdef PERL_DARWIN | |
2668 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2669 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2670 | (void)PerlProc_setuid(0); | |
2671 | #endif | |
b28d0864 | 2672 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2673 | } else { |
d8eceb89 | 2674 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2675 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2676 | } |
79072805 LW |
2677 | #endif |
2678 | #endif | |
85e6fe83 | 2679 | #endif |
d8eceb89 | 2680 | PL_uid = PerlProc_getuid(); |
3280af22 | 2681 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2682 | break; |
2683 | case '>': | |
38ab35f8 | 2684 | PL_euid = SvIV(sv); |
3280af22 NIS |
2685 | if (PL_delaymagic) { |
2686 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2687 | break; /* don't do magic till later */ |
2688 | } | |
2689 | #ifdef HAS_SETEUID | |
3280af22 | 2690 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2691 | #else |
2692 | #ifdef HAS_SETREUID | |
b28d0864 | 2693 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2694 | #else |
2695 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2696 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2697 | #else |
b28d0864 NIS |
2698 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2699 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2700 | else { |
e8ee3774 | 2701 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2702 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2703 | } |
79072805 LW |
2704 | #endif |
2705 | #endif | |
85e6fe83 | 2706 | #endif |
d8eceb89 | 2707 | PL_euid = PerlProc_geteuid(); |
3280af22 | 2708 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2709 | break; |
2710 | case '(': | |
38ab35f8 | 2711 | PL_gid = SvIV(sv); |
3280af22 NIS |
2712 | if (PL_delaymagic) { |
2713 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2714 | break; /* don't do magic till later */ |
2715 | } | |
2716 | #ifdef HAS_SETRGID | |
b28d0864 | 2717 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2718 | #else |
2719 | #ifdef HAS_SETREGID | |
3280af22 | 2720 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2721 | #else |
2722 | #ifdef HAS_SETRESGID | |
b28d0864 | 2723 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2724 | #else |
b28d0864 NIS |
2725 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2726 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2727 | else { |
d8eceb89 | 2728 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2729 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2730 | } |
79072805 LW |
2731 | #endif |
2732 | #endif | |
85e6fe83 | 2733 | #endif |
d8eceb89 | 2734 | PL_gid = PerlProc_getgid(); |
3280af22 | 2735 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2736 | break; |
2737 | case ')': | |
5cd24f17 PP |
2738 | #ifdef HAS_SETGROUPS |
2739 | { | |
b83604b4 | 2740 | const char *p = SvPV_const(sv, len); |
757f63d8 SP |
2741 | Groups_t *gary = NULL; |
2742 | ||
2743 | while (isSPACE(*p)) | |
2744 | ++p; | |
2745 | PL_egid = Atol(p); | |
2746 | for (i = 0; i < NGROUPS; ++i) { | |
2747 | while (*p && !isSPACE(*p)) | |
2748 | ++p; | |
2749 | while (isSPACE(*p)) | |
2750 | ++p; | |
2751 | if (!*p) | |
2752 | break; | |
2753 | if(!gary) | |
2754 | Newx(gary, i + 1, Groups_t); | |
2755 | else | |
2756 | Renew(gary, i + 1, Groups_t); | |
2757 | gary[i] = Atol(p); | |
2758 | } | |
2759 | if (i) | |
2760 | (void)setgroups(i, gary); | |
f5a63d97 | 2761 | Safefree(gary); |
5cd24f17 PP |
2762 | } |
2763 | #else /* HAS_SETGROUPS */ | |
38ab35f8 | 2764 | PL_egid = SvIV(sv); |
5cd24f17 | 2765 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2766 | if (PL_delaymagic) { |
2767 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2768 | break; /* don't do magic till later */ |
2769 | } | |
2770 | #ifdef HAS_SETEGID | |
3280af22 | 2771 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2772 | #else |
2773 | #ifdef HAS_SETREGID | |
b28d0864 | 2774 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2775 | #else |
2776 | #ifdef HAS_SETRESGID | |
b28d0864 | 2777 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2778 | #else |
b28d0864 NIS |
2779 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2780 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2781 | else { |
d8eceb89 | 2782 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2783 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2784 | } |
79072805 LW |
2785 | #endif |
2786 | #endif | |
85e6fe83 | 2787 | #endif |
d8eceb89 | 2788 | PL_egid = PerlProc_getegid(); |
3280af22 | 2789 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2790 | break; |
2791 | case ':': | |
2d8e6c8d | 2792 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2793 | break; |
cd39f2b6 | 2794 | #ifndef MACOS_TRADITIONAL |
79072805 | 2795 | case '0': |
e2975953 | 2796 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2797 | #ifdef HAS_SETPROCTITLE |
2798 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2799 | * show a string from the process struct and provide | |
2800 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2801 | if (PL_origalen != 1) { |
b83604b4 | 2802 | s = SvPV_const(sv, len); |
98b76f99 | 2803 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2804 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2805 | * but not the "(perl) suffix from the ps(1) |
2806 | * output, because that's what ps(1) shows if the | |
2807 | * argv[] is modified. */ | |
6f2ad931 | 2808 | setproctitle("-%s", s); |
9aad2c0e | 2809 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2810 | /* This doesn't really work if you assume that |
2811 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2812 | * because in ps(1) output the result will be like | |
2813 | * sprintf("perl: %s (perl)", s) | |
2814 | * I guess this is a security feature: | |
2815 | * one (a user process) cannot get rid of the original name. | |
2816 | * --jhi */ | |
2817 | setproctitle("%s", s); | |
2818 | # endif | |
2819 | } | |
9d3968b2 | 2820 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2821 | if (PL_origalen != 1) { |
17aa7f3d | 2822 | union pstun un; |
b83604b4 | 2823 | s = SvPV_const(sv, len); |
6867be6d | 2824 | un.pst_command = (char *)s; |
17aa7f3d JH |
2825 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2826 | } | |
9d3968b2 | 2827 | #else |
2d2af554 GA |
2828 | if (PL_origalen > 1) { |
2829 | /* PL_origalen is set in perl_parse(). */ | |
2830 | s = SvPV_force(sv,len); | |
2831 | if (len >= (STRLEN)PL_origalen-1) { | |
2832 | /* Longer than original, will be truncated. We assume that | |
2833 | * PL_origalen bytes are available. */ | |
2834 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
2835 | } | |
2836 | else { | |
2837 | /* Shorter than original, will be padded. */ | |
235ac35d | 2838 | #ifdef PERL_DARWIN |
60777a0d JH |
2839 | /* Special case for Mac OS X: see [perl #38868] */ |
2840 | const int pad = 0; | |
235ac35d | 2841 | #else |
8a89a4f1 MB |
2842 | /* Is the space counterintuitive? Yes. |
2843 | * (You were expecting \0?) | |
2844 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
2845 | * --jhi */ | |
60777a0d | 2846 | const int pad = ' '; |
235ac35d | 2847 | #endif |
60777a0d JH |
2848 | Copy(s, PL_origargv[0], len, char); |
2849 | PL_origargv[0][len] = 0; | |
2850 | memset(PL_origargv[0] + len + 1, | |
2851 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
2852 | } |
2853 | PL_origargv[0][PL_origalen-1] = 0; | |
2854 | for (i = 1; i < PL_origargc; i++) | |
2855 | PL_origargv[i] = 0; | |
79072805 | 2856 | } |
9d3968b2 | 2857 | #endif |
e2975953 | 2858 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 | 2859 | break; |
cd39f2b6 | 2860 | #endif |
79072805 LW |
2861 | } |
2862 | return 0; | |
2863 | } | |
2864 | ||
2865 | I32 | |
35a4481c | 2866 | Perl_whichsig(pTHX_ const char *sig) |
79072805 | 2867 | { |
aadb217d | 2868 | register char* const* sigv; |
7918f24d NC |
2869 | |
2870 | PERL_ARGS_ASSERT_WHICHSIG; | |
96a5add6 | 2871 | PERL_UNUSED_CONTEXT; |
79072805 | 2872 | |
aadb217d | 2873 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
79072805 | 2874 | if (strEQ(sig,*sigv)) |
aadb217d | 2875 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 LW |
2876 | #ifdef SIGCLD |
2877 | if (strEQ(sig,"CHLD")) | |
2878 | return SIGCLD; | |
2879 | #endif | |
2880 | #ifdef SIGCHLD | |
2881 | if (strEQ(sig,"CLD")) | |
2882 | return SIGCHLD; | |
2883 | #endif | |
7f1236c0 | 2884 | return -1; |
79072805 LW |
2885 | } |
2886 | ||
ecfc5424 | 2887 | Signal_t |
1e82f5a6 | 2888 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 2889 | Perl_sighandler(int sig, siginfo_t *sip, void *uap PERL_UNUSED_DECL) |
1e82f5a6 SH |
2890 | #else |
2891 | Perl_sighandler(int sig) | |
2892 | #endif | |
79072805 | 2893 | { |
1018e26f NIS |
2894 | #ifdef PERL_GET_SIG_CONTEXT |
2895 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 2896 | #else |
cea2e8a9 | 2897 | dTHX; |
71d280e3 | 2898 | #endif |
79072805 | 2899 | dSP; |
a0714e2c SS |
2900 | GV *gv = NULL; |
2901 | SV *sv = NULL; | |
8772537c | 2902 | SV * const tSv = PL_Sv; |
601f1833 | 2903 | CV *cv = NULL; |
533c011a | 2904 | OP *myop = PL_op; |
84902520 | 2905 | U32 flags = 0; |
8772537c | 2906 | XPV * const tXpv = PL_Xpv; |
71d280e3 | 2907 | |
3280af22 | 2908 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2909 | flags |= 1; |
3280af22 | 2910 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2911 | flags |= 4; |
3280af22 | 2912 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2913 | flags |= 16; |
2914 | ||
727405f8 | 2915 | if (!PL_psig_ptr[sig]) { |
99ef548b | 2916 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
2917 | PL_sig_name[sig]); |
2918 | exit(sig); | |
2919 | } | |
ff0cee69 | 2920 | |
84902520 TB |
2921 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2922 | infinity, so we fix 4 (in fact 5): */ | |
2923 | if (flags & 1) { | |
3280af22 | 2924 | PL_savestack_ix += 5; /* Protect save in progress. */ |
8772537c | 2925 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, (void*)&flags); |
84902520 | 2926 | } |
ac27b0f5 | 2927 | if (flags & 4) |
3280af22 | 2928 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2929 | if (flags & 16) |
3280af22 | 2930 | PL_scopestack_ix += 1; |
84902520 | 2931 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ac27b0f5 | 2932 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
8772537c AL |
2933 | || SvTYPE(cv) != SVt_PVCV) { |
2934 | HV *st; | |
f2c0649b | 2935 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 2936 | } |
84902520 | 2937 | |
a0d0e21e | 2938 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2939 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 2940 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2941 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2942 | : ((cv && CvGV(cv)) |
2943 | ? GvENAME(CvGV(cv)) | |
2944 | : "__ANON__"))); | |
2945 | goto cleanup; | |
79072805 LW |
2946 | } |
2947 | ||
22c35a8c | 2948 | if(PL_psig_name[sig]) { |
b37c2d43 | 2949 | sv = SvREFCNT_inc_NN(PL_psig_name[sig]); |
84902520 | 2950 | flags |= 64; |
df3728a2 | 2951 | #if !defined(PERL_IMPLICIT_CONTEXT) |
27da23d5 | 2952 | PL_sig_sv = sv; |
df3728a2 | 2953 | #endif |
84902520 | 2954 | } else { |
ff0cee69 | 2955 | sv = sv_newmortal(); |
22c35a8c | 2956 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2957 | } |
e336de0d | 2958 | |
e788e7d3 | 2959 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2960 | PUSHMARK(SP); |
79072805 | 2961 | PUSHs(sv); |
8aad04aa JH |
2962 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
2963 | { | |
2964 | struct sigaction oact; | |
2965 | ||
2966 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
2967 | if (sip) { |
2968 | HV *sih = newHV(); | |
2969 | SV *rv = newRV_noinc((SV*)sih); | |
2970 | /* The siginfo fields signo, code, errno, pid, uid, | |
2971 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
2972 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
2973 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 2974 | #if 0 /* XXX TODO: Configure scan for the existence of these, but even that does not help if the SA_SIGINFO is not implemented according to the spec. */ |
85771703 NC |
2975 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
2976 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
2977 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
2978 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
2979 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
2980 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 2981 | #endif |
8aad04aa JH |
2982 | EXTEND(SP, 2); |
2983 | PUSHs((SV*)rv); | |
22f1178f | 2984 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 2985 | } |
b4552a27 | 2986 | |
8aad04aa JH |
2987 | } |
2988 | } | |
2989 | #endif | |
79072805 | 2990 | PUTBACK; |
a0d0e21e | 2991 | |
1b266415 | 2992 | call_sv((SV*)cv, G_DISCARD|G_EVAL); |
79072805 | 2993 | |
d3acc0f7 | 2994 | POPSTACK; |
1b266415 | 2995 | if (SvTRUE(ERRSV)) { |
1d615522 | 2996 | #ifndef PERL_MICRO |
983dbef6 | 2997 | #ifdef HAS_SIGPROCMASK |
1b266415 NIS |
2998 | /* Handler "died", for example to get out of a restart-able read(). |
2999 | * Before we re-do that on its behalf re-enable the signal which was | |
3000 | * blocked by the system when we entered. | |
3001 | */ | |
3002 | sigset_t set; | |
3003 | sigemptyset(&set); | |
3004 | sigaddset(&set,sig); | |
3005 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
3006 | #else | |
3007 | /* Not clear if this will work */ | |
3008 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 3009 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 | 3010 | #endif |
1d615522 | 3011 | #endif /* !PERL_MICRO */ |
bd61b366 | 3012 | Perl_die(aTHX_ NULL); |
1b266415 | 3013 | } |
00d579c5 | 3014 | cleanup: |
84902520 | 3015 | if (flags & 1) |
3280af22 | 3016 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 | 3017 | if (flags & 4) |
3280af22 | 3018 | PL_markstack_ptr--; |
84902520 | 3019 | if (flags & 16) |
3280af22 | 3020 | PL_scopestack_ix -= 1; |
84902520 TB |
3021 | if (flags & 64) |
3022 | SvREFCNT_dec(sv); | |
533c011a | 3023 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 3024 | |
3280af22 NIS |
3025 | PL_Sv = tSv; /* Restore global temporaries. */ |
3026 | PL_Xpv = tXpv; | |
53bb94e2 | 3027 | return; |
79072805 | 3028 | } |
4e35701f NIS |
3029 | |
3030 | ||
51371543 | 3031 | static void |
8772537c | 3032 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3033 | { |
97aff369 | 3034 | dVAR; |
8772537c AL |
3035 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3036 | SV* const sv = mgs->mgs_sv; | |
51371543 GS |
3037 | |
3038 | if (!sv) | |
3039 | return; | |
3040 | ||
3041 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
3042 | { | |
f8c7b90f | 3043 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3044 | /* While magic was saved (and off) sv_setsv may well have seen |
3045 | this SV as a prime candidate for COW. */ | |
3046 | if (SvIsCOW(sv)) | |
e424a81e | 3047 | sv_force_normal_flags(sv, 0); |
f9701176 NC |
3048 | #endif |
3049 | ||
51371543 GS |
3050 | if (mgs->mgs_flags) |
3051 | SvFLAGS(sv) |= mgs->mgs_flags; | |
3052 | else | |
3053 | mg_magical(sv); | |
2b77b520 YST |
3054 | if (SvGMAGICAL(sv)) { |
3055 | /* downgrade public flags to private, | |
3056 | and discard any other private flags */ | |
3057 | ||
10edeb5d JH |
3058 | const U32 pubflags = SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK); |
3059 | if (pubflags) { | |
3060 | SvFLAGS(sv) &= ~( pubflags | (SVp_IOK|SVp_NOK|SVp_POK) ); | |
3061 | SvFLAGS(sv) |= ( pubflags << PRIVSHIFT ); | |
2b77b520 YST |
3062 | } |
3063 | } | |
51371543 GS |
3064 | } |
3065 | ||
3066 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
3067 | ||
3068 | /* If we're still on top of the stack, pop us off. (That condition | |
3069 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3070 | * if it's being called via leave_scope.) | |
3071 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3072 | * may leave alloc gunk on the savestack, and some code | |
3073 | * (e.g. sighandler) doesn't expect that... | |
3074 | */ | |
3075 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3076 | { | |
3077 | I32 popval = SSPOPINT; | |
c76ac1ee | 3078 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
3079 | PL_savestack_ix -= 2; |
3080 | popval = SSPOPINT; | |
3081 | assert(popval == SAVEt_ALLOC); | |
3082 | popval = SSPOPINT; | |
3083 | PL_savestack_ix -= popval; | |
3084 | } | |
3085 | ||
3086 | } | |
3087 | ||
3088 | static void | |
8772537c | 3089 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3090 | { |
27da23d5 | 3091 | dVAR; |
e1ec3a88 | 3092 | const U32 flags = *(const U32*)p; |
51371543 | 3093 | |
7918f24d NC |
3094 | PERL_ARGS_ASSERT_UNWIND_HANDLER_STACK; |
3095 | ||
51371543 GS |
3096 | if (flags & 1) |
3097 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
df3728a2 | 3098 | #if !defined(PERL_IMPLICIT_CONTEXT) |
51371543 | 3099 | if (flags & 64) |
27da23d5 | 3100 | SvREFCNT_dec(PL_sig_sv); |
df3728a2 | 3101 | #endif |
51371543 | 3102 | } |
1018e26f | 3103 | |
66610fdd | 3104 | /* |
b3ca2e83 NC |
3105 | =for apidoc magic_sethint |
3106 | ||
3107 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3108 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3109 | anything that would need a deep copy. Maybe we should warn if we find a | |
3110 | reference. | |
b3ca2e83 NC |
3111 | |
3112 | =cut | |
3113 | */ | |
3114 | int | |
3115 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3116 | { | |
3117 | dVAR; | |
fc92a12d | 3118 | SV *key = (mg->mg_len == HEf_SVKEY) ? (SV *)mg->mg_ptr |
59cd0e26 | 3119 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3120 | |
7918f24d NC |
3121 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3122 | ||
e6e3e454 NC |
3123 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3124 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3125 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3126 | or take other more complex action. */ | |
3127 | ||
5b9c0671 NC |
3128 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3129 | Doing this here saves a lot of doing it manually in perl code (and | |
3130 | forgetting to do it, and consequent subtle errors. */ | |
3131 | PL_hints |= HINT_LOCALIZE_HH; | |
c28fe1ec | 3132 | PL_compiling.cop_hints_hash |
fc92a12d | 3133 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, key, sv); |
b3ca2e83 NC |
3134 | return 0; |
3135 | } | |
3136 | ||
3137 | /* | |
3138 | =for apidoc magic_sethint | |
3139 | ||
c28fe1ec NC |
3140 | Triggered by a delete from %^H, records the key to |
3141 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3142 | |
3143 | =cut | |
3144 | */ | |
3145 | int | |
3146 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3147 | { | |
3148 | dVAR; | |
7918f24d NC |
3149 | |
3150 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; | |
f5a63d97 AL |
3151 | PERL_UNUSED_ARG(sv); |
3152 | ||
b3ca2e83 NC |
3153 | assert(mg->mg_len == HEf_SVKEY); |
3154 | ||
b3f24c00 MHM |
3155 | PERL_UNUSED_ARG(sv); |
3156 | ||
5b9c0671 | 3157 | PL_hints |= HINT_LOCALIZE_HH; |
c28fe1ec NC |
3158 | PL_compiling.cop_hints_hash |
3159 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
b3ca2e83 NC |
3160 | (SV *)mg->mg_ptr, &PL_sv_placeholder); |
3161 | return 0; | |
3162 | } | |
3163 | ||
3164 | /* | |
66610fdd RGS |
3165 | * Local variables: |
3166 | * c-indentation-style: bsd | |
3167 | * c-basic-offset: 4 | |
3168 | * indent-tabs-mode: t | |
3169 | * End: | |
3170 | * | |
37442d52 RGS |
3171 | * ex: set ts=8 sts=4 sw=4 noet: |
3172 | */ |