Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
4ac71550 TC |
12 | * Sam sat on the ground and put his head in his hands. 'I wish I had never |
13 | * come here, and I don't want to see no more magic,' he said, and fell silent. | |
14 | * | |
15 | * [p.363 of _The Lord of the Rings_, II/vii: "The Mirror of Galadriel"] | |
79072805 LW |
16 | */ |
17 | ||
ccfc67b7 JH |
18 | /* |
19 | =head1 Magical Functions | |
166f8a29 DM |
20 | |
21 | "Magic" is special data attached to SV structures in order to give them | |
22 | "magical" properties. When any Perl code tries to read from, or assign to, | |
23 | an SV marked as magical, it calls the 'get' or 'set' function associated | |
24 | with that SV's magic. A get is called prior to reading an SV, in order to | |
ddfa107c | 25 | give it a chance to update its internal value (get on $. writes the line |
166f8a29 DM |
26 | number of the last read filehandle into to the SV's IV slot), while |
27 | set is called after an SV has been written to, in order to allow it to make | |
ddfa107c | 28 | use of its changed value (set on $/ copies the SV's new value to the |
166f8a29 DM |
29 | PL_rs global variable). |
30 | ||
31 | Magic is implemented as a linked list of MAGIC structures attached to the | |
32 | SV. Each MAGIC struct holds the type of the magic, a pointer to an array | |
33 | of functions that implement the get(), set(), length() etc functions, | |
34 | plus space for some flags and pointers. For example, a tied variable has | |
35 | a MAGIC structure that contains a pointer to the object associated with the | |
36 | tie. | |
37 | ||
ccfc67b7 JH |
38 | */ |
39 | ||
79072805 | 40 | #include "EXTERN.h" |
864dbfa3 | 41 | #define PERL_IN_MG_C |
79072805 LW |
42 | #include "perl.h" |
43 | ||
5cd24f17 | 44 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
b7953727 JH |
45 | # ifdef I_GRP |
46 | # include <grp.h> | |
47 | # endif | |
188ea221 CS |
48 | #endif |
49 | ||
757f63d8 SP |
50 | #if defined(HAS_SETGROUPS) |
51 | # ifndef NGROUPS | |
52 | # define NGROUPS 32 | |
53 | # endif | |
54 | #endif | |
55 | ||
17aa7f3d JH |
56 | #ifdef __hpux |
57 | # include <sys/pstat.h> | |
58 | #endif | |
59 | ||
7636ea95 AB |
60 | #ifdef HAS_PRCTL_SET_NAME |
61 | # include <sys/prctl.h> | |
62 | #endif | |
63 | ||
8aad04aa | 64 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 65 | Signal_t Perl_csighandler(int sig, siginfo_t *, void *); |
8aad04aa | 66 | #else |
e69880a5 | 67 | Signal_t Perl_csighandler(int sig); |
8aad04aa | 68 | #endif |
e69880a5 | 69 | |
9cffb111 OS |
70 | #ifdef __Lynx__ |
71 | /* Missing protos on LynxOS */ | |
72 | void setruid(uid_t id); | |
73 | void seteuid(uid_t id); | |
74 | void setrgid(uid_t id); | |
75 | void setegid(uid_t id); | |
76 | #endif | |
77 | ||
c07a80fd | 78 | /* |
79 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
80 | */ | |
81 | ||
82 | struct magic_state { | |
83 | SV* mgs_sv; | |
455ece5e | 84 | I32 mgs_ss_ix; |
f9c6fee5 CS |
85 | U32 mgs_magical; |
86 | bool mgs_readonly; | |
c07a80fd | 87 | }; |
455ece5e | 88 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
89 | |
90 | STATIC void | |
8fb26106 | 91 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 92 | { |
97aff369 | 93 | dVAR; |
455ece5e | 94 | MGS* mgs; |
7918f24d NC |
95 | |
96 | PERL_ARGS_ASSERT_SAVE_MAGIC; | |
97 | ||
c07a80fd | 98 | assert(SvMAGICAL(sv)); |
d8b2590f NC |
99 | /* Turning READONLY off for a copy-on-write scalar (including shared |
100 | hash keys) is a bad idea. */ | |
765f542d | 101 | if (SvIsCOW(sv)) |
9a265e59 | 102 | sv_force_normal_flags(sv, 0); |
c07a80fd | 103 | |
8772537c | 104 | SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
105 | |
106 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 107 | mgs->mgs_sv = sv; |
f9c6fee5 CS |
108 | mgs->mgs_magical = SvMAGICAL(sv); |
109 | mgs->mgs_readonly = SvREADONLY(sv) != 0; | |
455ece5e | 110 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd | 111 | |
112 | SvMAGICAL_off(sv); | |
113 | SvREADONLY_off(sv); | |
085bde85 NC |
114 | if (!(SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK))) { |
115 | /* No public flags are set, so promote any private flags to public. */ | |
116 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; | |
117 | } | |
c07a80fd | 118 | } |
119 | ||
954c1994 GS |
120 | /* |
121 | =for apidoc mg_magical | |
122 | ||
123 | Turns on the magical status of an SV. See C<sv_magic>. | |
124 | ||
125 | =cut | |
126 | */ | |
127 | ||
8990e307 | 128 | void |
864dbfa3 | 129 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 | 130 | { |
e1ec3a88 | 131 | const MAGIC* mg; |
7918f24d | 132 | PERL_ARGS_ASSERT_MG_MAGICAL; |
96a5add6 | 133 | PERL_UNUSED_CONTEXT; |
f9c6fee5 CS |
134 | |
135 | SvMAGICAL_off(sv); | |
218787bd | 136 | if ((mg = SvMAGIC(sv))) { |
218787bd VP |
137 | do { |
138 | const MGVTBL* const vtbl = mg->mg_virtual; | |
139 | if (vtbl) { | |
140 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) | |
141 | SvGMAGICAL_on(sv); | |
142 | if (vtbl->svt_set) | |
143 | SvSMAGICAL_on(sv); | |
144 | if (vtbl->svt_clear) | |
145 | SvRMAGICAL_on(sv); | |
146 | } | |
147 | } while ((mg = mg->mg_moremagic)); | |
148 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG))) | |
149 | SvRMAGICAL_on(sv); | |
8990e307 LW |
150 | } |
151 | } | |
152 | ||
2767dea0 DM |
153 | |
154 | /* is this container magic (%ENV, $1 etc), or value magic (pos, taint etc)? */ | |
155 | ||
156 | STATIC bool | |
157 | S_is_container_magic(const MAGIC *mg) | |
158 | { | |
7918f24d | 159 | assert(mg); |
2767dea0 DM |
160 | switch (mg->mg_type) { |
161 | case PERL_MAGIC_bm: | |
162 | case PERL_MAGIC_fm: | |
163 | case PERL_MAGIC_regex_global: | |
164 | case PERL_MAGIC_nkeys: | |
165 | #ifdef USE_LOCALE_COLLATE | |
166 | case PERL_MAGIC_collxfrm: | |
167 | #endif | |
168 | case PERL_MAGIC_qr: | |
169 | case PERL_MAGIC_taint: | |
170 | case PERL_MAGIC_vec: | |
171 | case PERL_MAGIC_vstring: | |
172 | case PERL_MAGIC_utf8: | |
173 | case PERL_MAGIC_substr: | |
174 | case PERL_MAGIC_defelem: | |
175 | case PERL_MAGIC_arylen: | |
176 | case PERL_MAGIC_pos: | |
177 | case PERL_MAGIC_backref: | |
178 | case PERL_MAGIC_arylen_p: | |
179 | case PERL_MAGIC_rhash: | |
180 | case PERL_MAGIC_symtab: | |
5afa72af | 181 | case PERL_MAGIC_tied: /* treat as value, so 'local @tied' isn't tied */ |
d9088386 | 182 | case PERL_MAGIC_checkcall: |
2767dea0 DM |
183 | return 0; |
184 | default: | |
185 | return 1; | |
186 | } | |
187 | } | |
188 | ||
954c1994 GS |
189 | /* |
190 | =for apidoc mg_get | |
191 | ||
192 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
193 | ||
194 | =cut | |
195 | */ | |
196 | ||
79072805 | 197 | int |
864dbfa3 | 198 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 199 | { |
97aff369 | 200 | dVAR; |
35a4481c | 201 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
f2338a2e | 202 | const bool was_temp = cBOOL(SvTEMP(sv)); |
f9c6fee5 | 203 | bool have_new = 0; |
ff76feab | 204 | MAGIC *newmg, *head, *cur, *mg; |
20135930 | 205 | /* guard against sv having being freed midway by holding a private |
6683b158 NC |
206 | reference. */ |
207 | ||
7918f24d NC |
208 | PERL_ARGS_ASSERT_MG_GET; |
209 | ||
6683b158 NC |
210 | /* sv_2mortal has this side effect of turning on the TEMP flag, which can |
211 | cause the SV's buffer to get stolen (and maybe other stuff). | |
212 | So restore it. | |
213 | */ | |
46da273f | 214 | sv_2mortal(SvREFCNT_inc_simple_NN(sv)); |
6683b158 NC |
215 | if (!was_temp) { |
216 | SvTEMP_off(sv); | |
217 | } | |
218 | ||
455ece5e | 219 | save_magic(mgs_ix, sv); |
463ee0b2 | 220 | |
ff76feab AMS |
221 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
222 | list of magic. svt_get() may delete the current entry, add new | |
223 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
224 | ||
225 | newmg = cur = head = mg = SvMAGIC(sv); | |
226 | while (mg) { | |
35a4481c | 227 | const MGVTBL * const vtbl = mg->mg_virtual; |
f9c6fee5 | 228 | MAGIC * const nextmg = mg->mg_moremagic; /* it may delete itself */ |
ff76feab | 229 | |
2b260de0 | 230 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
16c91539 | 231 | vtbl->svt_get(aTHX_ sv, mg); |
b77f7d40 | 232 | |
58f82c5c DM |
233 | /* guard against magic having been deleted - eg FETCH calling |
234 | * untie */ | |
f9c6fee5 CS |
235 | if (!SvMAGIC(sv)) { |
236 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ | |
58f82c5c | 237 | break; |
f9c6fee5 | 238 | } |
b77f7d40 | 239 | |
f9c6fee5 | 240 | /* recalculate flags if this entry was deleted. */ |
ff76feab | 241 | if (mg->mg_flags & MGf_GSKIP) |
f9c6fee5 | 242 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; |
a0d0e21e | 243 | } |
ff76feab | 244 | |
f9c6fee5 | 245 | mg = nextmg; |
ff76feab | 246 | |
0723351e | 247 | if (have_new) { |
ff76feab AMS |
248 | /* Have we finished with the new entries we saw? Start again |
249 | where we left off (unless there are more new entries). */ | |
250 | if (mg == head) { | |
0723351e | 251 | have_new = 0; |
ff76feab AMS |
252 | mg = cur; |
253 | head = newmg; | |
254 | } | |
255 | } | |
256 | ||
257 | /* Were any new entries added? */ | |
0723351e NC |
258 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
259 | have_new = 1; | |
ff76feab AMS |
260 | cur = mg; |
261 | mg = newmg; | |
f9c6fee5 | 262 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ |
760ac839 | 263 | } |
79072805 | 264 | } |
463ee0b2 | 265 | |
8772537c | 266 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); |
6683b158 NC |
267 | |
268 | if (SvREFCNT(sv) == 1) { | |
269 | /* We hold the last reference to this SV, which implies that the | |
270 | SV was deleted as a side effect of the routines we called. */ | |
0c34ef67 | 271 | SvOK_off(sv); |
6683b158 | 272 | } |
79072805 LW |
273 | return 0; |
274 | } | |
275 | ||
954c1994 GS |
276 | /* |
277 | =for apidoc mg_set | |
278 | ||
279 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
280 | ||
281 | =cut | |
282 | */ | |
283 | ||
79072805 | 284 | int |
864dbfa3 | 285 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 286 | { |
97aff369 | 287 | dVAR; |
35a4481c | 288 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 289 | MAGIC* mg; |
463ee0b2 LW |
290 | MAGIC* nextmg; |
291 | ||
7918f24d NC |
292 | PERL_ARGS_ASSERT_MG_SET; |
293 | ||
455ece5e | 294 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
295 | |
296 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 297 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 298 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
299 | if (mg->mg_flags & MGf_GSKIP) { |
300 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
f9c6fee5 | 301 | (SSPTR(mgs_ix, MGS*))->mgs_magical = 0; |
a0d0e21e | 302 | } |
e7cbf6c6 DM |
303 | if (PL_localizing == 2 && !S_is_container_magic(mg)) |
304 | continue; | |
2b260de0 | 305 | if (vtbl && vtbl->svt_set) |
16c91539 | 306 | vtbl->svt_set(aTHX_ sv, mg); |
79072805 | 307 | } |
463ee0b2 | 308 | |
8772537c | 309 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
310 | return 0; |
311 | } | |
312 | ||
954c1994 GS |
313 | /* |
314 | =for apidoc mg_length | |
315 | ||
316 | Report on the SV's length. See C<sv_magic>. | |
317 | ||
318 | =cut | |
319 | */ | |
320 | ||
79072805 | 321 | U32 |
864dbfa3 | 322 | Perl_mg_length(pTHX_ SV *sv) |
79072805 | 323 | { |
97aff369 | 324 | dVAR; |
79072805 | 325 | MAGIC* mg; |
463ee0b2 | 326 | STRLEN len; |
463ee0b2 | 327 | |
7918f24d NC |
328 | PERL_ARGS_ASSERT_MG_LENGTH; |
329 | ||
79072805 | 330 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 331 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 332 | if (vtbl && vtbl->svt_len) { |
35a4481c | 333 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 334 | save_magic(mgs_ix, sv); |
a0d0e21e | 335 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 336 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 337 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
338 | return len; |
339 | } | |
340 | } | |
341 | ||
d0644529 NC |
342 | { |
343 | /* You can't know whether it's UTF-8 until you get the string again... | |
344 | */ | |
10516c54 | 345 | const U8 *s = (U8*)SvPV_const(sv, len); |
d0644529 NC |
346 | |
347 | if (DO_UTF8(sv)) { | |
348 | len = utf8_length(s, s + len); | |
349 | } | |
5636d518 | 350 | } |
463ee0b2 | 351 | return len; |
79072805 LW |
352 | } |
353 | ||
8fb26106 | 354 | I32 |
864dbfa3 | 355 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
356 | { |
357 | MAGIC* mg; | |
ac27b0f5 | 358 | |
7918f24d NC |
359 | PERL_ARGS_ASSERT_MG_SIZE; |
360 | ||
93965878 | 361 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 362 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 363 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
364 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
365 | I32 len; | |
455ece5e | 366 | save_magic(mgs_ix, sv); |
93965878 | 367 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 368 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 369 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
370 | return len; |
371 | } | |
372 | } | |
373 | ||
374 | switch(SvTYPE(sv)) { | |
375 | case SVt_PVAV: | |
502c6561 | 376 | return AvFILLp((const AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
377 | case SVt_PVHV: |
378 | /* FIXME */ | |
379 | default: | |
cea2e8a9 | 380 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
381 | break; |
382 | } | |
383 | return 0; | |
384 | } | |
385 | ||
954c1994 GS |
386 | /* |
387 | =for apidoc mg_clear | |
388 | ||
389 | Clear something magical that the SV represents. See C<sv_magic>. | |
390 | ||
391 | =cut | |
392 | */ | |
393 | ||
79072805 | 394 | int |
864dbfa3 | 395 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 396 | { |
35a4481c | 397 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 398 | MAGIC* mg; |
8ac77ac9 | 399 | MAGIC *nextmg; |
463ee0b2 | 400 | |
7918f24d NC |
401 | PERL_ARGS_ASSERT_MG_CLEAR; |
402 | ||
455ece5e | 403 | save_magic(mgs_ix, sv); |
463ee0b2 | 404 | |
8ac77ac9 | 405 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
35a4481c | 406 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 407 | /* omit GSKIP -- never set here */ |
727405f8 | 408 | |
8ac77ac9 NC |
409 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
410 | ||
2b260de0 | 411 | if (vtbl && vtbl->svt_clear) |
16c91539 | 412 | vtbl->svt_clear(aTHX_ sv, mg); |
79072805 | 413 | } |
463ee0b2 | 414 | |
8772537c | 415 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
416 | return 0; |
417 | } | |
418 | ||
954c1994 GS |
419 | /* |
420 | =for apidoc mg_find | |
421 | ||
422 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
423 | ||
424 | =cut | |
425 | */ | |
426 | ||
93a17b20 | 427 | MAGIC* |
35a4481c | 428 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 429 | { |
96a5add6 | 430 | PERL_UNUSED_CONTEXT; |
35a4481c AL |
431 | if (sv) { |
432 | MAGIC *mg; | |
433 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
434 | if (mg->mg_type == type) | |
435 | return mg; | |
436 | } | |
93a17b20 | 437 | } |
5f66b61c | 438 | return NULL; |
93a17b20 LW |
439 | } |
440 | ||
954c1994 GS |
441 | /* |
442 | =for apidoc mg_copy | |
443 | ||
444 | Copies the magic from one SV to another. See C<sv_magic>. | |
445 | ||
446 | =cut | |
447 | */ | |
448 | ||
79072805 | 449 | int |
864dbfa3 | 450 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 451 | { |
463ee0b2 | 452 | int count = 0; |
79072805 | 453 | MAGIC* mg; |
7918f24d NC |
454 | |
455 | PERL_ARGS_ASSERT_MG_COPY; | |
456 | ||
463ee0b2 | 457 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 458 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 | 459 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
16c91539 | 460 | count += vtbl->svt_copy(aTHX_ sv, mg, nsv, key, klen); |
68795e93 | 461 | } |
823a54a3 AL |
462 | else { |
463 | const char type = mg->mg_type; | |
1e73acc8 | 464 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
465 | sv_magic(nsv, |
466 | (type == PERL_MAGIC_tied) | |
467 | ? SvTIED_obj(sv, mg) | |
468 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
469 | ? sv | |
470 | : mg->mg_obj, | |
471 | toLOWER(type), key, klen); | |
472 | count++; | |
473 | } | |
79072805 | 474 | } |
79072805 | 475 | } |
463ee0b2 | 476 | return count; |
79072805 LW |
477 | } |
478 | ||
954c1994 | 479 | /* |
0cbee0a4 DM |
480 | =for apidoc mg_localize |
481 | ||
9711599e CS |
482 | Copy some of the magic from an existing SV to new localized version of that |
483 | SV. Container magic (eg %ENV, $1, tie) gets copied, value magic doesn't (eg | |
484 | taint, pos). | |
485 | ||
af7df257 | 486 | If setmagic is false then no set magic will be called on the new (empty) SV. |
9711599e CS |
487 | This typically means that assignment will soon follow (e.g. 'local $x = $y'), |
488 | and that will handle the magic. | |
0cbee0a4 DM |
489 | |
490 | =cut | |
491 | */ | |
492 | ||
493 | void | |
af7df257 | 494 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv, bool setmagic) |
0cbee0a4 | 495 | { |
97aff369 | 496 | dVAR; |
0cbee0a4 | 497 | MAGIC *mg; |
7918f24d NC |
498 | |
499 | PERL_ARGS_ASSERT_MG_LOCALIZE; | |
500 | ||
0cbee0a4 | 501 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
2b1b43ea | 502 | const MGVTBL* const vtbl = mg->mg_virtual; |
2767dea0 | 503 | if (!S_is_container_magic(mg)) |
0cbee0a4 | 504 | continue; |
0cbee0a4 | 505 | |
a5063e7c | 506 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
16c91539 | 507 | (void)vtbl->svt_local(aTHX_ nsv, mg); |
a5063e7c | 508 | else |
0cbee0a4 DM |
509 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
510 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 511 | |
0cbee0a4 DM |
512 | /* container types should remain read-only across localization */ |
513 | SvFLAGS(nsv) |= SvREADONLY(sv); | |
514 | } | |
515 | ||
516 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
517 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
af7df257 | 518 | if (setmagic) { |
9711599e CS |
519 | PL_localizing = 1; |
520 | SvSETMAGIC(nsv); | |
521 | PL_localizing = 0; | |
522 | } | |
0cbee0a4 DM |
523 | } |
524 | } | |
525 | ||
d9088386 Z |
526 | #define mg_free_struct(sv, mg) S_mg_free_struct(aTHX_ sv, mg) |
527 | static void | |
528 | S_mg_free_struct(pTHX_ SV *sv, MAGIC *mg) | |
529 | { | |
530 | const MGVTBL* const vtbl = mg->mg_virtual; | |
531 | if (vtbl && vtbl->svt_free) | |
532 | vtbl->svt_free(aTHX_ sv, mg); | |
533 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { | |
534 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) | |
535 | Safefree(mg->mg_ptr); | |
536 | else if (mg->mg_len == HEf_SVKEY) | |
537 | SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr)); | |
538 | } | |
539 | if (mg->mg_flags & MGf_REFCOUNTED) | |
540 | SvREFCNT_dec(mg->mg_obj); | |
541 | Safefree(mg); | |
542 | } | |
543 | ||
0cbee0a4 | 544 | /* |
954c1994 GS |
545 | =for apidoc mg_free |
546 | ||
547 | Free any magic storage used by the SV. See C<sv_magic>. | |
548 | ||
549 | =cut | |
550 | */ | |
551 | ||
79072805 | 552 | int |
864dbfa3 | 553 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
554 | { |
555 | MAGIC* mg; | |
556 | MAGIC* moremagic; | |
7918f24d NC |
557 | |
558 | PERL_ARGS_ASSERT_MG_FREE; | |
559 | ||
79072805 | 560 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
79072805 | 561 | moremagic = mg->mg_moremagic; |
d9088386 | 562 | mg_free_struct(sv, mg); |
c826f41b | 563 | SvMAGIC_set(sv, moremagic); |
79072805 | 564 | } |
b162af07 | 565 | SvMAGIC_set(sv, NULL); |
68f8932e | 566 | SvMAGICAL_off(sv); |
79072805 LW |
567 | return 0; |
568 | } | |
569 | ||
d9088386 Z |
570 | /* |
571 | =for apidoc Am|void|mg_free_type|SV *sv|int how | |
572 | ||
573 | Remove any magic of type I<how> from the SV I<sv>. See L</sv_magic>. | |
574 | ||
575 | =cut | |
576 | */ | |
577 | ||
578 | void | |
579 | Perl_mg_free_type(pTHX_ SV *sv, int how) | |
580 | { | |
581 | MAGIC *mg, *prevmg, *moremg; | |
582 | PERL_ARGS_ASSERT_MG_FREE_TYPE; | |
583 | for (prevmg = NULL, mg = SvMAGIC(sv); mg; prevmg = mg, mg = moremg) { | |
584 | MAGIC *newhead; | |
585 | moremg = mg->mg_moremagic; | |
586 | if (mg->mg_type == how) { | |
587 | /* temporarily move to the head of the magic chain, in case | |
588 | custom free code relies on this historical aspect of mg_free */ | |
589 | if (prevmg) { | |
590 | prevmg->mg_moremagic = moremg; | |
591 | mg->mg_moremagic = SvMAGIC(sv); | |
592 | SvMAGIC_set(sv, mg); | |
593 | } | |
594 | newhead = mg->mg_moremagic; | |
595 | mg_free_struct(sv, mg); | |
596 | SvMAGIC_set(sv, newhead); | |
597 | mg = prevmg; | |
598 | } | |
599 | } | |
600 | mg_magical(sv); | |
601 | } | |
602 | ||
79072805 | 603 | #include <signal.h> |
79072805 | 604 | |
942e002e | 605 | U32 |
864dbfa3 | 606 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 607 | { |
97aff369 | 608 | dVAR; |
8772537c | 609 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 610 | |
7918f24d NC |
611 | PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT; |
612 | ||
0bd48802 AL |
613 | if (PL_curpm) { |
614 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
615 | if (rx) { | |
a678b0e4 YO |
616 | if (mg->mg_obj) { /* @+ */ |
617 | /* return the number possible */ | |
07bc277f | 618 | return RX_NPARENS(rx); |
a678b0e4 | 619 | } else { /* @- */ |
07bc277f | 620 | I32 paren = RX_LASTPAREN(rx); |
a678b0e4 YO |
621 | |
622 | /* return the last filled */ | |
f46c4081 | 623 | while ( paren >= 0 |
07bc277f NC |
624 | && (RX_OFFS(rx)[paren].start == -1 |
625 | || RX_OFFS(rx)[paren].end == -1) ) | |
f46c4081 | 626 | paren--; |
a678b0e4 YO |
627 | return (U32)paren; |
628 | } | |
0bd48802 | 629 | } |
8f580fb8 | 630 | } |
ac27b0f5 | 631 | |
942e002e | 632 | return (U32)-1; |
6cef1e77 IZ |
633 | } |
634 | ||
635 | int | |
864dbfa3 | 636 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 637 | { |
97aff369 | 638 | dVAR; |
7918f24d NC |
639 | |
640 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET; | |
641 | ||
0bd48802 AL |
642 | if (PL_curpm) { |
643 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
644 | if (rx) { | |
645 | register const I32 paren = mg->mg_len; | |
646 | register I32 s; | |
647 | register I32 t; | |
648 | if (paren < 0) | |
649 | return 0; | |
07bc277f NC |
650 | if (paren <= (I32)RX_NPARENS(rx) && |
651 | (s = RX_OFFS(rx)[paren].start) != -1 && | |
652 | (t = RX_OFFS(rx)[paren].end) != -1) | |
0bd48802 AL |
653 | { |
654 | register I32 i; | |
655 | if (mg->mg_obj) /* @+ */ | |
656 | i = t; | |
657 | else /* @- */ | |
658 | i = s; | |
659 | ||
660 | if (i > 0 && RX_MATCH_UTF8(rx)) { | |
07bc277f | 661 | const char * const b = RX_SUBBEG(rx); |
0bd48802 | 662 | if (b) |
f5a63d97 | 663 | i = utf8_length((U8*)b, (U8*)(b+i)); |
0bd48802 | 664 | } |
727405f8 | 665 | |
0bd48802 | 666 | sv_setiv(sv, i); |
1aa99e6b | 667 | } |
0bd48802 | 668 | } |
6cef1e77 IZ |
669 | } |
670 | return 0; | |
671 | } | |
672 | ||
e4b89193 | 673 | int |
a29d06ed MG |
674 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
675 | { | |
7918f24d | 676 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET; |
d4c19fe8 AL |
677 | PERL_UNUSED_ARG(sv); |
678 | PERL_UNUSED_ARG(mg); | |
6ad8f254 | 679 | Perl_croak_no_modify(aTHX); |
0dbb1585 | 680 | NORETURN_FUNCTION_END; |
a29d06ed MG |
681 | } |
682 | ||
93a17b20 | 683 | U32 |
864dbfa3 | 684 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 685 | { |
97aff369 | 686 | dVAR; |
93a17b20 | 687 | register I32 paren; |
93a17b20 | 688 | register I32 i; |
2fdbfb4d AB |
689 | register const REGEXP * rx; |
690 | const char * const remaining = mg->mg_ptr + 1; | |
93a17b20 | 691 | |
7918f24d NC |
692 | PERL_ARGS_ASSERT_MAGIC_LEN; |
693 | ||
93a17b20 | 694 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
695 | case '\020': |
696 | if (*remaining == '\0') { /* ^P */ | |
697 | break; | |
698 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
699 | goto do_prematch; | |
700 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
701 | goto do_postmatch; | |
702 | } | |
703 | break; | |
704 | case '\015': /* $^MATCH */ | |
705 | if (strEQ(remaining, "ATCH")) { | |
706 | goto do_match; | |
707 | } else { | |
708 | break; | |
709 | } | |
710 | case '`': | |
711 | do_prematch: | |
f1b875a0 | 712 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
713 | goto maybegetparen; |
714 | case '\'': | |
715 | do_postmatch: | |
f1b875a0 | 716 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
717 | goto maybegetparen; |
718 | case '&': | |
719 | do_match: | |
f1b875a0 | 720 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d | 721 | goto maybegetparen; |
93a17b20 | 722 | case '1': case '2': case '3': case '4': |
2fdbfb4d AB |
723 | case '5': case '6': case '7': case '8': case '9': |
724 | paren = atoi(mg->mg_ptr); | |
725 | maybegetparen: | |
aaa362c4 | 726 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
727 | getparen: |
728 | i = CALLREG_NUMBUF_LENGTH((REGEXP * const)rx, sv, paren); | |
cf93c79d | 729 | |
ffc61ed2 | 730 | if (i < 0) |
0844c848 | 731 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 732 | return i; |
2fdbfb4d | 733 | } else { |
235bddc8 | 734 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 735 | report_uninit(sv); |
2fdbfb4d | 736 | return 0; |
93a17b20 | 737 | } |
93a17b20 | 738 | case '+': |
aaa362c4 | 739 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f | 740 | paren = RX_LASTPAREN(rx); |
13f57bf8 CS |
741 | if (paren) |
742 | goto getparen; | |
93a17b20 | 743 | } |
748a9306 | 744 | return 0; |
a01268b5 JH |
745 | case '\016': /* ^N */ |
746 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f | 747 | paren = RX_LASTCLOSEPAREN(rx); |
a01268b5 JH |
748 | if (paren) |
749 | goto getparen; | |
750 | } | |
751 | return 0; | |
93a17b20 LW |
752 | } |
753 | magic_get(sv,mg); | |
2d8e6c8d | 754 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 | 755 | sv_2pv(sv, 0); |
2d8e6c8d | 756 | } |
93a17b20 LW |
757 | if (SvPOK(sv)) |
758 | return SvCUR(sv); | |
759 | return 0; | |
760 | } | |
761 | ||
ad3296c6 | 762 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
763 | if (SvPOK(sv)) { \ |
764 | STRLEN len = SvCUR(sv); \ | |
765 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
766 | while (len > 0 && isSPACE(p[len-1])) \ |
767 | --len; \ | |
768 | SvCUR_set(sv, len); \ | |
769 | p[len] = '\0'; \ | |
770 | } \ | |
ad3296c6 SH |
771 | } STMT_END |
772 | ||
8b850bd5 NC |
773 | void |
774 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
775 | { | |
7918f24d NC |
776 | PERL_ARGS_ASSERT_EMULATE_COP_IO; |
777 | ||
8b850bd5 NC |
778 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) |
779 | sv_setsv(sv, &PL_sv_undef); | |
780 | else { | |
781 | sv_setpvs(sv, ""); | |
782 | SvUTF8_off(sv); | |
783 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
20439bc7 | 784 | SV *const value = cop_hints_fetch_pvs(c, "open<", 0); |
8b850bd5 NC |
785 | assert(value); |
786 | sv_catsv(sv, value); | |
787 | } | |
788 | sv_catpvs(sv, "\0"); | |
789 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
20439bc7 | 790 | SV *const value = cop_hints_fetch_pvs(c, "open>", 0); |
8b850bd5 NC |
791 | assert(value); |
792 | sv_catsv(sv, value); | |
793 | } | |
794 | } | |
795 | } | |
796 | ||
79072805 | 797 | int |
864dbfa3 | 798 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 799 | { |
27da23d5 | 800 | dVAR; |
79072805 | 801 | register I32 paren; |
db7198b5 | 802 | register const char *s = NULL; |
d9f97599 | 803 | register REGEXP *rx; |
823a54a3 AL |
804 | const char * const remaining = mg->mg_ptr + 1; |
805 | const char nextchar = *remaining; | |
79072805 | 806 | |
7918f24d NC |
807 | PERL_ARGS_ASSERT_MAGIC_GET; |
808 | ||
79072805 | 809 | switch (*mg->mg_ptr) { |
748a9306 | 810 | case '\001': /* ^A */ |
3280af22 | 811 | sv_setsv(sv, PL_bodytarget); |
125b9982 NT |
812 | if (SvTAINTED(PL_bodytarget)) |
813 | SvTAINTED_on(sv); | |
748a9306 | 814 | break; |
e5218da5 | 815 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 816 | if (nextchar == '\0') { |
e5218da5 GA |
817 | sv_setiv(sv, (IV)PL_minus_c); |
818 | } | |
823a54a3 | 819 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
820 | sv_setiv(sv, (IV)STATUS_NATIVE); |
821 | } | |
49460fe6 NIS |
822 | break; |
823 | ||
79072805 | 824 | case '\004': /* ^D */ |
aea4f609 | 825 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 826 | break; |
28f23441 | 827 | case '\005': /* ^E */ |
823a54a3 | 828 | if (nextchar == '\0') { |
e37778c2 | 829 | #if defined(VMS) |
0a378802 JH |
830 | { |
831 | # include <descrip.h> | |
832 | # include <starlet.h> | |
833 | char msg[255]; | |
834 | $DESCRIPTOR(msgdsc,msg); | |
835 | sv_setnv(sv,(NV) vaxc$errno); | |
836 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
837 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
838 | else | |
76f68e9b | 839 | sv_setpvs(sv,""); |
0a378802 | 840 | } |
4b645107 | 841 | #elif defined(OS2) |
0a378802 JH |
842 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
843 | sv_setnv(sv, (NV)errno); | |
844 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
845 | } else { | |
846 | if (errno != errno_isOS2) { | |
823a54a3 | 847 | const int tmp = _syserrno(); |
0a378802 JH |
848 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
849 | Perl_rc = tmp; | |
850 | } | |
851 | sv_setnv(sv, (NV)Perl_rc); | |
852 | sv_setpv(sv, os2error(Perl_rc)); | |
853 | } | |
4b645107 | 854 | #elif defined(WIN32) |
0a378802 | 855 | { |
d4c19fe8 | 856 | const DWORD dwErr = GetLastError(); |
0a378802 | 857 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 858 | if (dwErr) { |
0a378802 JH |
859 | PerlProc_GetOSError(sv, dwErr); |
860 | } | |
861 | else | |
76f68e9b | 862 | sv_setpvs(sv, ""); |
0a378802 JH |
863 | SetLastError(dwErr); |
864 | } | |
22fae026 | 865 | #else |
f6c8f21d | 866 | { |
4ee39169 | 867 | dSAVE_ERRNO; |
f6c8f21d | 868 | sv_setnv(sv, (NV)errno); |
666ea192 | 869 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 870 | RESTORE_ERRNO; |
f6c8f21d | 871 | } |
28f23441 | 872 | #endif |
ad3296c6 | 873 | SvRTRIM(sv); |
0a378802 JH |
874 | SvNOK_on(sv); /* what a wonderful hack! */ |
875 | } | |
823a54a3 | 876 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
877 | sv_setsv(sv, PL_encoding); |
878 | break; | |
79072805 | 879 | case '\006': /* ^F */ |
3280af22 | 880 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 881 | break; |
9ebf26ad FR |
882 | case '\007': /* ^GLOBAL_PHASE */ |
883 | if (strEQ(remaining, "LOBAL_PHASE")) { | |
884 | sv_setpvn(sv, PL_phase_names[PL_phase], | |
885 | strlen(PL_phase_names[PL_phase])); | |
886 | } | |
887 | break; | |
a0d0e21e | 888 | case '\010': /* ^H */ |
3280af22 | 889 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 890 | break; |
9d116dd7 | 891 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 892 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 893 | break; |
ac27b0f5 | 894 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 895 | if (nextchar == '\0') { |
ac27b0f5 | 896 | sv_setpv(sv, PL_osname); |
3511154c DM |
897 | SvTAINTED_off(sv); |
898 | } | |
823a54a3 | 899 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 900 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 901 | } |
28f23441 | 902 | break; |
9ebf26ad | 903 | case '\020': |
cde0cee5 YO |
904 | if (nextchar == '\0') { /* ^P */ |
905 | sv_setiv(sv, (IV)PL_perldb); | |
906 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
907 | goto do_prematch_fetch; | |
908 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
909 | goto do_postmatch_fetch; | |
910 | } | |
79072805 | 911 | break; |
fb73857a | 912 | case '\023': /* ^S */ |
823a54a3 | 913 | if (nextchar == '\0') { |
bc177e6b | 914 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 915 | SvOK_off(sv); |
3280af22 | 916 | else if (PL_in_eval) |
6dc8a9e4 | 917 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
918 | else |
919 | sv_setiv(sv, 0); | |
d58bf5aa | 920 | } |
fb73857a | 921 | break; |
79072805 | 922 | case '\024': /* ^T */ |
823a54a3 | 923 | if (nextchar == '\0') { |
88e89b8a | 924 | #ifdef BIG_TIME |
7c36658b | 925 | sv_setnv(sv, PL_basetime); |
88e89b8a | 926 | #else |
7c36658b | 927 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 928 | #endif |
7c36658b | 929 | } |
823a54a3 | 930 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
931 | sv_setiv(sv, PL_tainting |
932 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
933 | : 0); | |
7c36658b | 934 | break; |
e07ea26a | 935 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 936 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 937 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 938 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 939 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
940 | else if (strEQ(remaining, "TF8CACHE")) |
941 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
942 | break; |
943 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 944 | if (nextchar == '\0') |
4438c4b7 | 945 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 946 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 947 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 948 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
949 | } |
950 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
666ea192 JH |
951 | sv_setpvn( |
952 | sv, | |
953 | (PL_dowarn & G_WARN_ON) ? WARN_ALLstring : WARN_NONEstring, | |
954 | WARNsize | |
955 | ); | |
013b78e8 | 956 | } |
d3a7d8c7 | 957 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
958 | /* Get the bit mask for $warnings::Bits{all}, because |
959 | * it could have been extended by warnings::register */ | |
6673a63c | 960 | HV * const bits=get_hv("warnings::Bits", 0); |
f5a63d97 AL |
961 | if (bits) { |
962 | SV ** const bits_all = hv_fetchs(bits, "all", FALSE); | |
963 | if (bits_all) | |
964 | sv_setsv(sv, *bits_all); | |
75b6c4ca RGS |
965 | } |
966 | else { | |
967 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
968 | } | |
ac27b0f5 | 969 | } |
4438c4b7 | 970 | else { |
72dc9ed5 NC |
971 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
972 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 973 | } |
d3a7d8c7 | 974 | SvPOK_only(sv); |
4438c4b7 | 975 | } |
79072805 | 976 | break; |
cde0cee5 YO |
977 | case '\015': /* $^MATCH */ |
978 | if (strEQ(remaining, "ATCH")) { | |
79072805 LW |
979 | case '1': case '2': case '3': case '4': |
980 | case '5': case '6': case '7': case '8': case '9': case '&': | |
cde0cee5 YO |
981 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
982 | /* | |
159b6efe | 983 | * Pre-threads, this was paren = atoi(GvENAME((const GV *)mg->mg_obj)); |
cde0cee5 YO |
984 | * XXX Does the new way break anything? |
985 | */ | |
986 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
2fdbfb4d | 987 | CALLREG_NUMBUF_FETCH(rx,paren,sv); |
cde0cee5 YO |
988 | break; |
989 | } | |
990 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
991 | } |
992 | break; | |
993 | case '+': | |
aaa362c4 | 994 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f NC |
995 | if (RX_LASTPAREN(rx)) { |
996 | CALLREG_NUMBUF_FETCH(rx,RX_LASTPAREN(rx),sv); | |
44a2ac75 YO |
997 | break; |
998 | } | |
79072805 | 999 | } |
3280af22 | 1000 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 1001 | break; |
a01268b5 JH |
1002 | case '\016': /* ^N */ |
1003 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f NC |
1004 | if (RX_LASTCLOSEPAREN(rx)) { |
1005 | CALLREG_NUMBUF_FETCH(rx,RX_LASTCLOSEPAREN(rx),sv); | |
44a2ac75 YO |
1006 | break; |
1007 | } | |
1008 | ||
a01268b5 JH |
1009 | } |
1010 | sv_setsv(sv,&PL_sv_undef); | |
1011 | break; | |
79072805 | 1012 | case '`': |
cde0cee5 | 1013 | do_prematch_fetch: |
aaa362c4 | 1014 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 1015 | CALLREG_NUMBUF_FETCH(rx,-2,sv); |
93b32b6d | 1016 | break; |
79072805 | 1017 | } |
3280af22 | 1018 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
1019 | break; |
1020 | case '\'': | |
cde0cee5 | 1021 | do_postmatch_fetch: |
aaa362c4 | 1022 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 1023 | CALLREG_NUMBUF_FETCH(rx,-1,sv); |
93b32b6d | 1024 | break; |
79072805 | 1025 | } |
3280af22 | 1026 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
1027 | break; |
1028 | case '.': | |
3280af22 | 1029 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 1030 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 1031 | } |
79072805 LW |
1032 | break; |
1033 | case '?': | |
809a5acc | 1034 | { |
809a5acc | 1035 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 1036 | #ifdef COMPLEX_STATUS |
41cb7b2b | 1037 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
1038 | LvTARGOFF(sv) = PL_statusvalue; |
1039 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 1040 | #endif |
809a5acc | 1041 | } |
79072805 LW |
1042 | break; |
1043 | case '^': | |
099be4f1 DM |
1044 | if (!isGV_with_GP(PL_defoutgv)) |
1045 | s = ""; | |
1046 | else if (GvIOp(PL_defoutgv)) | |
1047 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); | |
79072805 LW |
1048 | if (s) |
1049 | sv_setpv(sv,s); | |
1050 | else { | |
3280af22 | 1051 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 1052 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
1053 | } |
1054 | break; | |
1055 | case '~': | |
099be4f1 DM |
1056 | if (!isGV_with_GP(PL_defoutgv)) |
1057 | s = ""; | |
1058 | else if (GvIOp(PL_defoutgv)) | |
0daa599b | 1059 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 1060 | if (!s) |
3280af22 | 1061 | s = GvENAME(PL_defoutgv); |
79072805 LW |
1062 | sv_setpv(sv,s); |
1063 | break; | |
79072805 | 1064 | case '=': |
099be4f1 | 1065 | if (GvIO(PL_defoutgv)) |
0daa599b | 1066 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
1067 | break; |
1068 | case '-': | |
099be4f1 | 1069 | if (GvIO(PL_defoutgv)) |
0daa599b | 1070 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
1071 | break; |
1072 | case '%': | |
099be4f1 | 1073 | if (GvIO(PL_defoutgv)) |
0daa599b | 1074 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 | 1075 | break; |
79072805 LW |
1076 | case ':': |
1077 | break; | |
1078 | case '/': | |
1079 | break; | |
1080 | case '[': | |
11206fdd | 1081 | sv_setiv(sv, (IV)CopARYBASE_get(PL_curcop)); |
79072805 LW |
1082 | break; |
1083 | case '|': | |
099be4f1 | 1084 | if (GvIO(PL_defoutgv)) |
0daa599b | 1085 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 | 1086 | break; |
79072805 | 1087 | case '\\': |
b2ce0fda | 1088 | if (PL_ors_sv) |
f28098ff | 1089 | sv_copypv(sv, PL_ors_sv); |
79072805 | 1090 | break; |
79072805 | 1091 | case '!': |
666d8aa2 CB |
1092 | { |
1093 | dSAVE_ERRNO; | |
a5f75d66 | 1094 | #ifdef VMS |
65202027 | 1095 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
a5f75d66 | 1096 | #else |
65202027 | 1097 | sv_setnv(sv, (NV)errno); |
666d8aa2 | 1098 | #endif |
88e89b8a | 1099 | #ifdef OS2 |
ed344e4f IZ |
1100 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
1101 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 1102 | else |
a5f75d66 | 1103 | #endif |
666ea192 | 1104 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
be1cf43c NC |
1105 | if (SvPOKp(sv)) |
1106 | SvPOK_on(sv); /* may have got removed during taint processing */ | |
4ee39169 | 1107 | RESTORE_ERRNO; |
88e89b8a | 1108 | } |
666d8aa2 | 1109 | |
ad3296c6 | 1110 | SvRTRIM(sv); |
946ec16e | 1111 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1112 | break; |
1113 | case '<': | |
3280af22 | 1114 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
1115 | break; |
1116 | case '>': | |
3280af22 | 1117 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
1118 | break; |
1119 | case '(': | |
3280af22 | 1120 | sv_setiv(sv, (IV)PL_gid); |
79072805 LW |
1121 | goto add_groups; |
1122 | case ')': | |
3280af22 | 1123 | sv_setiv(sv, (IV)PL_egid); |
79072805 | 1124 | add_groups: |
79072805 | 1125 | #ifdef HAS_GETGROUPS |
79072805 | 1126 | { |
57d7c65e | 1127 | Groups_t *gary = NULL; |
fb45abb2 | 1128 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1129 | Newx(gary, num_groups, Groups_t); |
1130 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1131 | for (i = 0; i < num_groups; i++) |
1132 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1133 | Safefree(gary); |
79072805 | 1134 | } |
155aba94 | 1135 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1136 | #endif |
79072805 | 1137 | break; |
79072805 LW |
1138 | case '0': |
1139 | break; | |
1140 | } | |
a0d0e21e | 1141 | return 0; |
79072805 LW |
1142 | } |
1143 | ||
1144 | int | |
864dbfa3 | 1145 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1146 | { |
8772537c | 1147 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1148 | |
7918f24d NC |
1149 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1150 | ||
79072805 | 1151 | if (uf && uf->uf_val) |
24f81a43 | 1152 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1153 | return 0; |
1154 | } | |
1155 | ||
1156 | int | |
864dbfa3 | 1157 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1158 | { |
27da23d5 | 1159 | dVAR; |
9ae3433d | 1160 | STRLEN len = 0, klen; |
666ea192 | 1161 | const char *s = SvOK(sv) ? SvPV_const(sv,len) : ""; |
fabdb6c0 | 1162 | const char * const ptr = MgPV_const(mg,klen); |
88e89b8a | 1163 | my_setenv(ptr, s); |
1e422769 | 1164 | |
7918f24d NC |
1165 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1166 | ||
a0d0e21e LW |
1167 | #ifdef DYNAMIC_ENV_FETCH |
1168 | /* We just undefd an environment var. Is a replacement */ | |
1169 | /* waiting in the wings? */ | |
1170 | if (!len) { | |
fabdb6c0 AL |
1171 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE); |
1172 | if (valp) | |
4ab59fcc | 1173 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1174 | } |
1175 | #endif | |
1e422769 | 1176 | |
39e571d4 | 1177 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1178 | /* And you'll never guess what the dog had */ |
1179 | /* in its mouth... */ | |
3280af22 | 1180 | if (PL_tainting) { |
1e422769 | 1181 | MgTAINTEDDIR_off(mg); |
1182 | #ifdef VMS | |
5aabfad6 | 1183 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
b8ffc8df | 1184 | char pathbuf[256], eltbuf[256], *cp, *elt; |
c623ac67 | 1185 | Stat_t sbuf; |
1e422769 | 1186 | int i = 0, j = 0; |
1187 | ||
6fca0082 | 1188 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1189 | elt = eltbuf; |
1e422769 | 1190 | do { /* DCL$PATH may be a search list */ |
1191 | while (1) { /* as may dev portion of any element */ | |
1192 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1193 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1194 | cando_by_name(S_IWUSR,0,elt) ) { | |
1195 | MgTAINTEDDIR_on(mg); | |
1196 | return 0; | |
1197 | } | |
1198 | } | |
bd61b366 | 1199 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1200 | *cp = '\0'; |
1201 | if (my_trnlnm(elt, eltbuf, j++)) | |
1202 | elt = eltbuf; | |
1203 | else | |
1204 | break; | |
1205 | } | |
1206 | j = 0; | |
1207 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1208 | } | |
1209 | #endif /* VMS */ | |
5aabfad6 | 1210 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
8772537c | 1211 | const char * const strend = s + len; |
463ee0b2 LW |
1212 | |
1213 | while (s < strend) { | |
96827780 | 1214 | char tmpbuf[256]; |
c623ac67 | 1215 | Stat_t st; |
5f74f29c | 1216 | I32 i; |
f5a63d97 AL |
1217 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1218 | const char path_sep = '|'; | |
1219 | #else | |
1220 | const char path_sep = ':'; | |
1221 | #endif | |
96827780 | 1222 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1223 | s, strend, path_sep, &i); |
463ee0b2 | 1224 | s++; |
bb7a0f54 | 1225 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1226 | #ifdef VMS |
1227 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1228 | #else | |
1229 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1230 | #endif | |
c6ed36e1 | 1231 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1232 | MgTAINTEDDIR_on(mg); |
1e422769 | 1233 | return 0; |
1234 | } | |
463ee0b2 | 1235 | } |
79072805 LW |
1236 | } |
1237 | } | |
39e571d4 | 1238 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1239 | |
79072805 LW |
1240 | return 0; |
1241 | } | |
1242 | ||
1243 | int | |
864dbfa3 | 1244 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1245 | { |
7918f24d | 1246 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1247 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1248 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1249 | return 0; |
1250 | } | |
1251 | ||
88e89b8a | 1252 | int |
864dbfa3 | 1253 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1254 | { |
97aff369 | 1255 | dVAR; |
7918f24d | 1256 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1257 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1258 | #if defined(VMS) |
cea2e8a9 | 1259 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1260 | #else |
3280af22 | 1261 | if (PL_localizing) { |
fb73857a | 1262 | HE* entry; |
b0269e46 | 1263 | my_clearenv(); |
85fbaab2 NC |
1264 | hv_iterinit(MUTABLE_HV(sv)); |
1265 | while ((entry = hv_iternext(MUTABLE_HV(sv)))) { | |
fb73857a | 1266 | I32 keylen; |
1267 | my_setenv(hv_iterkey(entry, &keylen), | |
85fbaab2 | 1268 | SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry))); |
fb73857a | 1269 | } |
1270 | } | |
1271 | #endif | |
1272 | return 0; | |
1273 | } | |
1274 | ||
1275 | int | |
864dbfa3 | 1276 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1277 | { |
27da23d5 | 1278 | dVAR; |
7918f24d | 1279 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1280 | PERL_UNUSED_ARG(sv); |
1281 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1282 | #if defined(VMS) |
1283 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1284 | #else | |
1285 | my_clearenv(); | |
1286 | #endif | |
3e3baf6d | 1287 | return 0; |
66b1d557 HM |
1288 | } |
1289 | ||
64ca3a65 | 1290 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1291 | #ifdef HAS_SIGPROCMASK |
1292 | static void | |
1293 | restore_sigmask(pTHX_ SV *save_sv) | |
1294 | { | |
0bd48802 | 1295 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1296 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1297 | } |
1298 | #endif | |
66b1d557 | 1299 | int |
864dbfa3 | 1300 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1301 | { |
97aff369 | 1302 | dVAR; |
88e89b8a | 1303 | /* Are we fetching a signal entry? */ |
708854f2 | 1304 | int i = (I16)mg->mg_private; |
7918f24d NC |
1305 | |
1306 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1307 | ||
708854f2 NC |
1308 | if (!i) { |
1309 | mg->mg_private = i = whichsig(MgPV_nolen_const(mg)); | |
1310 | } | |
1311 | ||
e02bfb16 | 1312 | if (i > 0) { |
22c35a8c GS |
1313 | if(PL_psig_ptr[i]) |
1314 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1315 | else { |
46da273f | 1316 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1317 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1318 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1319 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1320 | #endif |
1321 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1322 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1323 | sigstate = SIG_DFL; | |
85b332e2 | 1324 | #endif |
88e89b8a | 1325 | /* cache state so we don't fetch it again */ |
8aad04aa | 1326 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1327 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1328 | else |
3280af22 | 1329 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1330 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1331 | SvTEMP_off(sv); |
1332 | } | |
1333 | } | |
1334 | return 0; | |
1335 | } | |
1336 | int | |
864dbfa3 | 1337 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1338 | { |
7918f24d | 1339 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
8772537c | 1340 | PERL_UNUSED_ARG(sv); |
179c85a2 | 1341 | |
38a124f0 | 1342 | magic_setsig(NULL, mg); |
179c85a2 | 1343 | return sv_unmagic(sv, mg->mg_type); |
88e89b8a | 1344 | } |
3d37d572 | 1345 | |
0a8e0eff | 1346 | Signal_t |
8aad04aa | 1347 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1348 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1349 | #else |
0a8e0eff | 1350 | Perl_csighandler(int sig) |
8aad04aa | 1351 | #endif |
0a8e0eff | 1352 | { |
1018e26f NIS |
1353 | #ifdef PERL_GET_SIG_CONTEXT |
1354 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1355 | #else | |
85b332e2 CL |
1356 | dTHX; |
1357 | #endif | |
23ada85b | 1358 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1359 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1360 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1361 | #endif |
2e34cc90 | 1362 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1363 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1364 | #ifdef KILL_BY_SIGPRC |
1365 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1366 | #else | |
1367 | exit(1); | |
1368 | #endif | |
1369 | #endif | |
406878dd | 1370 | if ( |
853d2c32 RGS |
1371 | #ifdef SIGILL |
1372 | sig == SIGILL || | |
1373 | #endif | |
1374 | #ifdef SIGBUS | |
1375 | sig == SIGBUS || | |
1376 | #endif | |
1377 | #ifdef SIGSEGV | |
1378 | sig == SIGSEGV || | |
1379 | #endif | |
1380 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 | 1381 | /* Call the perl level handler now-- |
31c91b43 | 1382 | * with risk we may be in malloc() or being destructed etc. */ |
6e324d09 | 1383 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1384 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1385 | #else |
1386 | (*PL_sighandlerp)(sig); | |
92807b6d | 1387 | #endif |
406878dd | 1388 | else { |
31c91b43 | 1389 | if (!PL_psig_pend) return; |
406878dd GA |
1390 | /* Set a flag to say this signal is pending, that is awaiting delivery after |
1391 | * the current Perl opcode completes */ | |
1392 | PL_psig_pend[sig]++; | |
1393 | ||
1394 | #ifndef SIG_PENDING_DIE_COUNT | |
1395 | # define SIG_PENDING_DIE_COUNT 120 | |
1396 | #endif | |
fe13d51d | 1397 | /* Add one to say _a_ signal is pending */ |
406878dd GA |
1398 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1399 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1400 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
1401 | } | |
0a8e0eff NIS |
1402 | } |
1403 | ||
2e34cc90 CL |
1404 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1405 | void | |
1406 | Perl_csighandler_init(void) | |
1407 | { | |
1408 | int sig; | |
27da23d5 | 1409 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1410 | |
1411 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1412 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1413 | dTHX; |
27da23d5 | 1414 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1415 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1416 | #endif |
1417 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1418 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1419 | #endif |
1420 | } | |
27da23d5 | 1421 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1422 | } |
1423 | #endif | |
1424 | ||
0a8e0eff NIS |
1425 | void |
1426 | Perl_despatch_signals(pTHX) | |
1427 | { | |
97aff369 | 1428 | dVAR; |
0a8e0eff NIS |
1429 | int sig; |
1430 | PL_sig_pending = 0; | |
1431 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1432 | if (PL_psig_pend[sig]) { | |
d0166017 | 1433 | dSAVE_ERRNO; |
25da4428 JH |
1434 | PERL_BLOCKSIG_ADD(set, sig); |
1435 | PL_psig_pend[sig] = 0; | |
1436 | PERL_BLOCKSIG_BLOCK(set); | |
6e324d09 | 1437 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1438 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1439 | #else |
1440 | (*PL_sighandlerp)(sig); | |
92807b6d | 1441 | #endif |
25da4428 | 1442 | PERL_BLOCKSIG_UNBLOCK(set); |
d0166017 | 1443 | RESTORE_ERRNO; |
0a8e0eff NIS |
1444 | } |
1445 | } | |
1446 | } | |
1447 | ||
38a124f0 | 1448 | /* sv of NULL signifies that we're acting as magic_clearsig. */ |
85e6fe83 | 1449 | int |
864dbfa3 | 1450 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1451 | { |
27da23d5 | 1452 | dVAR; |
79072805 | 1453 | I32 i; |
cbbf8932 | 1454 | SV** svp = NULL; |
2d4fcd5e AJ |
1455 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1456 | * effects (due to closures). We must make sure that the new disposition | |
1457 | * is in place before it is called. | |
1458 | */ | |
cbbf8932 | 1459 | SV* to_dec = NULL; |
e72dc28c | 1460 | STRLEN len; |
2d4fcd5e AJ |
1461 | #ifdef HAS_SIGPROCMASK |
1462 | sigset_t set, save; | |
1463 | SV* save_sv; | |
1464 | #endif | |
d5263905 | 1465 | register const char *s = MgPV_const(mg,len); |
7918f24d NC |
1466 | |
1467 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1468 | ||
748a9306 LW |
1469 | if (*s == '_') { |
1470 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1471 | svp = &PL_diehook; |
38a124f0 NC |
1472 | else if (strEQ(s,"__WARN__") |
1473 | && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) { | |
1474 | /* Merge the existing behaviours, which are as follows: | |
1475 | magic_setsig, we always set svp to &PL_warnhook | |
1476 | (hence we always change the warnings handler) | |
1477 | For magic_clearsig, we don't change the warnings handler if it's | |
1478 | set to the &PL_warnhook. */ | |
3280af22 | 1479 | svp = &PL_warnhook; |
38a124f0 | 1480 | } else if (sv) |
cea2e8a9 | 1481 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1482 | i = 0; |
38a124f0 | 1483 | if (svp && *svp) { |
9289f461 RGS |
1484 | if (*svp != PERL_WARNHOOK_FATAL) |
1485 | to_dec = *svp; | |
cbbf8932 | 1486 | *svp = NULL; |
4633a7c4 | 1487 | } |
748a9306 LW |
1488 | } |
1489 | else { | |
708854f2 NC |
1490 | i = (I16)mg->mg_private; |
1491 | if (!i) { | |
58a26b12 NC |
1492 | i = whichsig(s); /* ...no, a brick */ |
1493 | mg->mg_private = (U16)i; | |
708854f2 | 1494 | } |
86d86cad | 1495 | if (i <= 0) { |
a2a5de95 NC |
1496 | if (sv) |
1497 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); | |
748a9306 LW |
1498 | return 0; |
1499 | } | |
2d4fcd5e AJ |
1500 | #ifdef HAS_SIGPROCMASK |
1501 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1502 | sigemptyset(&set); | |
1503 | sigaddset(&set,i); | |
1504 | sigprocmask(SIG_BLOCK, &set, &save); | |
1505 | ENTER; | |
9ff8e806 | 1506 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1507 | SAVEFREESV(save_sv); |
1508 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1509 | #endif | |
1510 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1511 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1512 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1513 | #endif |
23ada85b | 1514 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1515 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1516 | #endif |
2e34cc90 | 1517 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1518 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1519 | #endif |
2d4fcd5e | 1520 | to_dec = PL_psig_ptr[i]; |
38a124f0 NC |
1521 | if (sv) { |
1522 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); | |
1523 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ | |
79fd3822 NC |
1524 | |
1525 | /* Signals don't change name during the program's execution, so once | |
1526 | they're cached in the appropriate slot of PL_psig_name, they can | |
1527 | stay there. | |
1528 | ||
1529 | Ideally we'd find some way of making SVs at (C) compile time, or | |
1530 | at least, doing most of the work. */ | |
1531 | if (!PL_psig_name[i]) { | |
1532 | PL_psig_name[i] = newSVpvn(s, len); | |
1533 | SvREADONLY_on(PL_psig_name[i]); | |
1534 | } | |
38a124f0 | 1535 | } else { |
79fd3822 | 1536 | SvREFCNT_dec(PL_psig_name[i]); |
38a124f0 NC |
1537 | PL_psig_name[i] = NULL; |
1538 | PL_psig_ptr[i] = NULL; | |
1539 | } | |
748a9306 | 1540 | } |
38a124f0 | 1541 | if (sv && (isGV_with_GP(sv) || SvROK(sv))) { |
2d4fcd5e | 1542 | if (i) { |
5c1546dc | 1543 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1544 | } |
748a9306 | 1545 | else |
b37c2d43 | 1546 | *svp = SvREFCNT_inc_simple_NN(sv); |
38a124f0 | 1547 | } else { |
9dfa190b NC |
1548 | if (sv && SvOK(sv)) { |
1549 | s = SvPV_force(sv, len); | |
1550 | } else { | |
1551 | sv = NULL; | |
1552 | } | |
1553 | if (sv && strEQ(s,"IGNORE")) { | |
1554 | if (i) { | |
23ada85b | 1555 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
9dfa190b NC |
1556 | PL_sig_ignoring[i] = 1; |
1557 | (void)rsignal(i, PL_csighandlerp); | |
85b332e2 | 1558 | #else |
9dfa190b | 1559 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1560 | #endif |
9dfa190b | 1561 | } |
2d4fcd5e | 1562 | } |
9dfa190b NC |
1563 | else if (!sv || strEQ(s,"DEFAULT") || !len) { |
1564 | if (i) { | |
2e34cc90 | 1565 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
9dfa190b NC |
1566 | PL_sig_defaulting[i] = 1; |
1567 | (void)rsignal(i, PL_csighandlerp); | |
2e34cc90 | 1568 | #else |
9dfa190b | 1569 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1570 | #endif |
9dfa190b NC |
1571 | } |
1572 | } | |
1573 | else { | |
1574 | /* | |
1575 | * We should warn if HINT_STRICT_REFS, but without | |
1576 | * access to a known hint bit in a known OP, we can't | |
1577 | * tell whether HINT_STRICT_REFS is in force or not. | |
1578 | */ | |
1579 | if (!strchr(s,':') && !strchr(s,'\'')) | |
1580 | Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"), | |
1581 | SV_GMAGIC); | |
1582 | if (i) | |
1583 | (void)rsignal(i, PL_csighandlerp); | |
1584 | else | |
1585 | *svp = SvREFCNT_inc_simple_NN(sv); | |
136e0459 | 1586 | } |
748a9306 | 1587 | } |
9dfa190b | 1588 | |
2d4fcd5e AJ |
1589 | #ifdef HAS_SIGPROCMASK |
1590 | if(i) | |
1591 | LEAVE; | |
1592 | #endif | |
ef8d46e8 | 1593 | SvREFCNT_dec(to_dec); |
79072805 LW |
1594 | return 0; |
1595 | } | |
64ca3a65 | 1596 | #endif /* !PERL_MICRO */ |
79072805 LW |
1597 | |
1598 | int | |
864dbfa3 | 1599 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1600 | { |
97aff369 | 1601 | dVAR; |
7918f24d | 1602 | PERL_ARGS_ASSERT_MAGIC_SETISA; |
8772537c | 1603 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1604 | |
89c14e2e | 1605 | /* Skip _isaelem because _isa will handle it shortly */ |
354b0578 | 1606 | if (PL_delaymagic & DM_ARRAY_ISA && mg->mg_type == PERL_MAGIC_isaelem) |
89c14e2e BB |
1607 | return 0; |
1608 | ||
0e446081 | 1609 | return magic_clearisa(NULL, mg); |
463ee0b2 LW |
1610 | } |
1611 | ||
0e446081 | 1612 | /* sv of NULL signifies that we're acting as magic_setisa. */ |
463ee0b2 | 1613 | int |
52b45067 RD |
1614 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1615 | { | |
1616 | dVAR; | |
1617 | HV* stash; | |
1618 | ||
7918f24d NC |
1619 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1620 | ||
52b45067 | 1621 | /* Bail out if destruction is going on */ |
627364f1 | 1622 | if(PL_phase == PERL_PHASE_DESTRUCT) return 0; |
52b45067 | 1623 | |
0e446081 NC |
1624 | if (sv) |
1625 | av_clear(MUTABLE_AV(sv)); | |
52b45067 | 1626 | |
6624142a FC |
1627 | if (SvTYPE(mg->mg_obj) != SVt_PVGV && SvSMAGICAL(mg->mg_obj)) |
1628 | /* This occurs with setisa_elem magic, which calls this | |
1629 | same function. */ | |
1630 | mg = mg_find(mg->mg_obj, PERL_MAGIC_isa); | |
1631 | ||
1632 | if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */ | |
1633 | SV **svp = AvARRAY((AV *)mg->mg_obj); | |
1634 | I32 items = AvFILLp((AV *)mg->mg_obj) + 1; | |
1635 | while (items--) { | |
1636 | stash = GvSTASH((GV *)*svp++); | |
1637 | if (stash && HvENAME(stash)) mro_isa_changed_in(stash); | |
1638 | } | |
1639 | ||
1640 | return 0; | |
1641 | } | |
1642 | ||
52b45067 | 1643 | stash = GvSTASH( |
6624142a | 1644 | (const GV *)mg->mg_obj |
52b45067 RD |
1645 | ); |
1646 | ||
00169e2c FC |
1647 | /* The stash may have been detached from the symbol table, so check its |
1648 | name before doing anything. */ | |
1649 | if (stash && HvENAME_get(stash)) | |
5562fa71 | 1650 | mro_isa_changed_in(stash); |
52b45067 RD |
1651 | |
1652 | return 0; | |
1653 | } | |
1654 | ||
1655 | int | |
864dbfa3 | 1656 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1657 | { |
97aff369 | 1658 | dVAR; |
7918f24d | 1659 | PERL_ARGS_ASSERT_MAGIC_SETAMAGIC; |
8772537c AL |
1660 | PERL_UNUSED_ARG(sv); |
1661 | PERL_UNUSED_ARG(mg); | |
3280af22 | 1662 | PL_amagic_generation++; |
463ee0b2 | 1663 | |
a0d0e21e LW |
1664 | return 0; |
1665 | } | |
463ee0b2 | 1666 | |
946ec16e | 1667 | int |
864dbfa3 | 1668 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1669 | { |
85fbaab2 | 1670 | HV * const hv = MUTABLE_HV(LvTARG(sv)); |
6ff81951 | 1671 | I32 i = 0; |
7918f24d NC |
1672 | |
1673 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1674 | PERL_UNUSED_ARG(mg); |
7719e241 | 1675 | |
6ff81951 | 1676 | if (hv) { |
497b47a8 | 1677 | (void) hv_iterinit(hv); |
ad64d0ec | 1678 | if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
497b47a8 JH |
1679 | i = HvKEYS(hv); |
1680 | else { | |
1681 | while (hv_iternext(hv)) | |
1682 | i++; | |
1683 | } | |
6ff81951 GS |
1684 | } |
1685 | ||
1686 | sv_setiv(sv, (IV)i); | |
1687 | return 0; | |
1688 | } | |
1689 | ||
1690 | int | |
864dbfa3 | 1691 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1692 | { |
7918f24d | 1693 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1694 | PERL_UNUSED_ARG(mg); |
946ec16e | 1695 | if (LvTARG(sv)) { |
85fbaab2 | 1696 | hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv)); |
946ec16e | 1697 | } |
1698 | return 0; | |
ac27b0f5 | 1699 | } |
946ec16e | 1700 | |
efaf3674 DM |
1701 | /* |
1702 | =for apidoc magic_methcall | |
1703 | ||
1704 | Invoke a magic method (like FETCH). | |
1705 | ||
1706 | * sv and mg are the tied thinggy and the tie magic; | |
1707 | * meth is the name of the method to call; | |
1a1a5af7 DM |
1708 | * argc is the number of args (in addition to $self) to pass to the method; |
1709 | the args themselves are any values following the argc argument. | |
efaf3674 DM |
1710 | * flags: |
1711 | G_DISCARD: invoke method with G_DISCARD flag and don't return a value | |
1a1a5af7 | 1712 | G_UNDEF_FILL: fill the stack with argc pointers to PL_sv_undef. |
efaf3674 DM |
1713 | |
1714 | Returns the SV (if any) returned by the method, or NULL on failure. | |
1715 | ||
1716 | ||
1717 | =cut | |
1718 | */ | |
1719 | ||
1720 | SV* | |
c7a0c747 | 1721 | Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
046b0c7d | 1722 | U32 argc, ...) |
a0d0e21e | 1723 | { |
97aff369 | 1724 | dVAR; |
a0d0e21e | 1725 | dSP; |
efaf3674 | 1726 | SV* ret = NULL; |
463ee0b2 | 1727 | |
7918f24d NC |
1728 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1729 | ||
efaf3674 DM |
1730 | ENTER; |
1731 | PUSHSTACKi(PERLSI_MAGIC); | |
924508f0 | 1732 | PUSHMARK(SP); |
efaf3674 | 1733 | |
67549bd2 NC |
1734 | EXTEND(SP, argc+1); |
1735 | PUSHs(SvTIED_obj(sv, mg)); | |
1736 | if (flags & G_UNDEF_FILL) { | |
1737 | while (argc--) { | |
efaf3674 | 1738 | PUSHs(&PL_sv_undef); |
93965878 | 1739 | } |
67549bd2 | 1740 | } else if (argc > 0) { |
046b0c7d NC |
1741 | va_list args; |
1742 | va_start(args, argc); | |
1743 | ||
1744 | do { | |
1745 | SV *const sv = va_arg(args, SV *); | |
1746 | PUSHs(sv); | |
1747 | } while (--argc); | |
1748 | ||
1749 | va_end(args); | |
88e89b8a | 1750 | } |
463ee0b2 | 1751 | PUTBACK; |
efaf3674 DM |
1752 | if (flags & G_DISCARD) { |
1753 | call_method(meth, G_SCALAR|G_DISCARD); | |
1754 | } | |
1755 | else { | |
1756 | if (call_method(meth, G_SCALAR)) | |
1757 | ret = *PL_stack_sp--; | |
1758 | } | |
1759 | POPSTACK; | |
1760 | LEAVE; | |
1761 | return ret; | |
1762 | } | |
1763 | ||
1764 | ||
1765 | /* wrapper for magic_methcall that creates the first arg */ | |
463ee0b2 | 1766 | |
efaf3674 | 1767 | STATIC SV* |
c7a0c747 | 1768 | S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
efaf3674 DM |
1769 | int n, SV *val) |
1770 | { | |
1771 | dVAR; | |
1772 | SV* arg1 = NULL; | |
1773 | ||
1774 | PERL_ARGS_ASSERT_MAGIC_METHCALL1; | |
1775 | ||
1776 | if (mg->mg_ptr) { | |
1777 | if (mg->mg_len >= 0) { | |
db4b3a1d | 1778 | arg1 = newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
efaf3674 DM |
1779 | } |
1780 | else if (mg->mg_len == HEf_SVKEY) | |
1781 | arg1 = MUTABLE_SV(mg->mg_ptr); | |
1782 | } | |
1783 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { | |
db4b3a1d | 1784 | arg1 = newSViv((IV)(mg->mg_len)); |
efaf3674 DM |
1785 | sv_2mortal(arg1); |
1786 | } | |
1787 | if (!arg1) { | |
046b0c7d | 1788 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n - 1, val); |
efaf3674 | 1789 | } |
046b0c7d | 1790 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n, arg1, val); |
946ec16e | 1791 | } |
1792 | ||
76e3520e | 1793 | STATIC int |
e1ec3a88 | 1794 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1795 | { |
efaf3674 DM |
1796 | dVAR; |
1797 | SV* ret; | |
463ee0b2 | 1798 | |
7918f24d NC |
1799 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1800 | ||
efaf3674 DM |
1801 | ret = magic_methcall1(sv, mg, meth, 0, 1, NULL); |
1802 | if (ret) | |
1803 | sv_setsv(sv, ret); | |
a0d0e21e LW |
1804 | return 0; |
1805 | } | |
463ee0b2 | 1806 | |
a0d0e21e | 1807 | int |
864dbfa3 | 1808 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1809 | { |
7918f24d NC |
1810 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1811 | ||
fd69380d | 1812 | if (mg->mg_type == PERL_MAGIC_tiedelem) |
a0d0e21e | 1813 | mg->mg_flags |= MGf_GSKIP; |
58f82c5c | 1814 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1815 | return 0; |
1816 | } | |
1817 | ||
1818 | int | |
864dbfa3 | 1819 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1820 | { |
efaf3674 | 1821 | dVAR; |
b112cff9 DM |
1822 | MAGIC *tmg; |
1823 | SV *val; | |
7918f24d NC |
1824 | |
1825 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1826 | ||
b112cff9 DM |
1827 | /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to |
1828 | * STORE() is not $val, but rather a PVLV (the sv in this call), whose | |
1829 | * public flags indicate its value based on copying from $val. Doing | |
1830 | * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us. | |
1831 | * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes | |
1832 | * wrong if $val happened to be tainted, as sv hasn't got magic | |
1833 | * enabled, even though taint magic is in the chain. In which case, | |
1834 | * fake up a temporary tainted value (this is easier than temporarily | |
1835 | * re-enabling magic on sv). */ | |
1836 | ||
1837 | if (PL_tainting && (tmg = mg_find(sv, PERL_MAGIC_taint)) | |
1838 | && (tmg->mg_len & 1)) | |
1839 | { | |
1840 | val = sv_mortalcopy(sv); | |
1841 | SvTAINTED_on(val); | |
1842 | } | |
1843 | else | |
1844 | val = sv; | |
1845 | ||
efaf3674 | 1846 | magic_methcall1(sv, mg, "STORE", G_DISCARD, 2, val); |
463ee0b2 LW |
1847 | return 0; |
1848 | } | |
1849 | ||
1850 | int | |
864dbfa3 | 1851 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1852 | { |
7918f24d NC |
1853 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1854 | ||
a0d0e21e LW |
1855 | return magic_methpack(sv,mg,"DELETE"); |
1856 | } | |
463ee0b2 | 1857 | |
93965878 NIS |
1858 | |
1859 | U32 | |
864dbfa3 | 1860 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1861 | { |
efaf3674 | 1862 | dVAR; |
22846ab4 | 1863 | I32 retval = 0; |
efaf3674 | 1864 | SV* retsv; |
93965878 | 1865 | |
7918f24d NC |
1866 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1867 | ||
efaf3674 DM |
1868 | retsv = magic_methcall1(sv, mg, "FETCHSIZE", 0, 1, NULL); |
1869 | if (retsv) { | |
1870 | retval = SvIV(retsv)-1; | |
22846ab4 AB |
1871 | if (retval < -1) |
1872 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1873 | } |
22846ab4 | 1874 | return (U32) retval; |
93965878 NIS |
1875 | } |
1876 | ||
cea2e8a9 GS |
1877 | int |
1878 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1879 | { |
efaf3674 | 1880 | dVAR; |
463ee0b2 | 1881 | |
7918f24d NC |
1882 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1883 | ||
046b0c7d | 1884 | Perl_magic_methcall(aTHX_ sv, mg, "CLEAR", G_DISCARD, 0); |
463ee0b2 LW |
1885 | return 0; |
1886 | } | |
1887 | ||
1888 | int | |
864dbfa3 | 1889 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1890 | { |
efaf3674 DM |
1891 | dVAR; |
1892 | SV* ret; | |
463ee0b2 | 1893 | |
7918f24d NC |
1894 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1895 | ||
046b0c7d NC |
1896 | ret = SvOK(key) ? Perl_magic_methcall(aTHX_ sv, mg, "NEXTKEY", 0, 1, key) |
1897 | : Perl_magic_methcall(aTHX_ sv, mg, "FIRSTKEY", 0, 0); | |
efaf3674 DM |
1898 | if (ret) |
1899 | sv_setsv(key,ret); | |
79072805 LW |
1900 | return 0; |
1901 | } | |
1902 | ||
1903 | int | |
1146e912 | 1904 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1905 | { |
7918f24d NC |
1906 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1907 | ||
a0d0e21e | 1908 | return magic_methpack(sv,mg,"EXISTS"); |
ac27b0f5 | 1909 | } |
a0d0e21e | 1910 | |
a3bcc51e TP |
1911 | SV * |
1912 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1913 | { | |
efaf3674 | 1914 | dVAR; |
5fcbf73d | 1915 | SV *retval; |
ad64d0ec NC |
1916 | SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg); |
1917 | HV * const pkg = SvSTASH((const SV *)SvRV(tied)); | |
a3bcc51e | 1918 | |
7918f24d NC |
1919 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
1920 | ||
a3bcc51e TP |
1921 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1922 | SV *key; | |
bfcb3514 | 1923 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1924 | /* we are in an iteration so the hash cannot be empty */ |
1925 | return &PL_sv_yes; | |
1926 | /* no xhv_eiter so now use FIRSTKEY */ | |
1927 | key = sv_newmortal(); | |
ad64d0ec | 1928 | magic_nextpack(MUTABLE_SV(hv), mg, key); |
bfcb3514 | 1929 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1930 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1931 | } | |
1932 | ||
1933 | /* there is a SCALAR method that we can call */ | |
046b0c7d | 1934 | retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(hv), mg, "SCALAR", 0, 0); |
efaf3674 | 1935 | if (!retval) |
5fcbf73d | 1936 | retval = &PL_sv_undef; |
a3bcc51e TP |
1937 | return retval; |
1938 | } | |
1939 | ||
a0d0e21e | 1940 | int |
864dbfa3 | 1941 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1942 | { |
97aff369 | 1943 | dVAR; |
8772537c AL |
1944 | GV * const gv = PL_DBline; |
1945 | const I32 i = SvTRUE(sv); | |
1946 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 1947 | atoi(MgPV_nolen_const(mg)), FALSE); |
7918f24d NC |
1948 | |
1949 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
1950 | ||
8772537c AL |
1951 | if (svp && SvIOKp(*svp)) { |
1952 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
1953 | if (o) { | |
1954 | /* set or clear breakpoint in the relevant control op */ | |
1955 | if (i) | |
1956 | o->op_flags |= OPf_SPECIAL; | |
1957 | else | |
1958 | o->op_flags &= ~OPf_SPECIAL; | |
1959 | } | |
5df8de69 | 1960 | } |
79072805 LW |
1961 | return 0; |
1962 | } | |
1963 | ||
1964 | int | |
8772537c | 1965 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 1966 | { |
97aff369 | 1967 | dVAR; |
502c6561 | 1968 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
1969 | |
1970 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
1971 | ||
83bf042f | 1972 | if (obj) { |
fc15ae8f | 1973 | sv_setiv(sv, AvFILL(obj) + CopARYBASE_get(PL_curcop)); |
83bf042f NC |
1974 | } else { |
1975 | SvOK_off(sv); | |
1976 | } | |
79072805 LW |
1977 | return 0; |
1978 | } | |
1979 | ||
1980 | int | |
864dbfa3 | 1981 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1982 | { |
97aff369 | 1983 | dVAR; |
502c6561 | 1984 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
1985 | |
1986 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
1987 | ||
83bf042f | 1988 | if (obj) { |
fc15ae8f | 1989 | av_fill(obj, SvIV(sv) - CopARYBASE_get(PL_curcop)); |
83bf042f | 1990 | } else { |
a2a5de95 NC |
1991 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
1992 | "Attempt to set length of freed array"); | |
83bf042f NC |
1993 | } |
1994 | return 0; | |
1995 | } | |
1996 | ||
1997 | int | |
1998 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) | |
1999 | { | |
97aff369 | 2000 | dVAR; |
7918f24d NC |
2001 | |
2002 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; | |
53c1dcc0 | 2003 | PERL_UNUSED_ARG(sv); |
7918f24d | 2004 | |
94f3782b DM |
2005 | /* during global destruction, mg_obj may already have been freed */ |
2006 | if (PL_in_clean_all) | |
1ea47f64 | 2007 | return 0; |
94f3782b | 2008 | |
83bf042f NC |
2009 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
2010 | ||
2011 | if (mg) { | |
2012 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
2013 | reference. Hence the we (the array) are about to go away with it | |
2014 | still pointing at us. Clear its pointer, else it would be pointing | |
2015 | at free memory. See the comment in sv_magic about reference loops, | |
2016 | and why it can't own a reference to us. */ | |
2017 | mg->mg_obj = 0; | |
2018 | } | |
a0d0e21e LW |
2019 | return 0; |
2020 | } | |
2021 | ||
2022 | int | |
864dbfa3 | 2023 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2024 | { |
97aff369 | 2025 | dVAR; |
8772537c | 2026 | SV* const lsv = LvTARG(sv); |
7918f24d NC |
2027 | |
2028 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
3881461a | 2029 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2030 | |
a0d0e21e | 2031 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
2032 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
2033 | if (found && found->mg_len >= 0) { | |
2034 | I32 i = found->mg_len; | |
7e2040f0 | 2035 | if (DO_UTF8(lsv)) |
a0ed51b3 | 2036 | sv_pos_b2u(lsv, &i); |
fc15ae8f | 2037 | sv_setiv(sv, i + CopARYBASE_get(PL_curcop)); |
a0d0e21e LW |
2038 | return 0; |
2039 | } | |
2040 | } | |
0c34ef67 | 2041 | SvOK_off(sv); |
a0d0e21e LW |
2042 | return 0; |
2043 | } | |
2044 | ||
2045 | int | |
864dbfa3 | 2046 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2047 | { |
97aff369 | 2048 | dVAR; |
8772537c | 2049 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
2050 | SSize_t pos; |
2051 | STRLEN len; | |
c00206c8 | 2052 | STRLEN ulen = 0; |
53d44271 | 2053 | MAGIC* found; |
a0d0e21e | 2054 | |
7918f24d | 2055 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
3881461a | 2056 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2057 | |
a0d0e21e | 2058 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
2059 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
2060 | else | |
2061 | found = NULL; | |
2062 | if (!found) { | |
a0d0e21e LW |
2063 | if (!SvOK(sv)) |
2064 | return 0; | |
d83f0a82 NC |
2065 | #ifdef PERL_OLD_COPY_ON_WRITE |
2066 | if (SvIsCOW(lsv)) | |
2067 | sv_force_normal_flags(lsv, 0); | |
2068 | #endif | |
3881461a | 2069 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 2070 | NULL, 0); |
a0d0e21e LW |
2071 | } |
2072 | else if (!SvOK(sv)) { | |
3881461a | 2073 | found->mg_len = -1; |
a0d0e21e LW |
2074 | return 0; |
2075 | } | |
2076 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
2077 | ||
fc15ae8f | 2078 | pos = SvIV(sv) - CopARYBASE_get(PL_curcop); |
a0ed51b3 | 2079 | |
7e2040f0 | 2080 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
2081 | ulen = sv_len_utf8(lsv); |
2082 | if (ulen) | |
2083 | len = ulen; | |
a0ed51b3 LW |
2084 | } |
2085 | ||
a0d0e21e LW |
2086 | if (pos < 0) { |
2087 | pos += len; | |
2088 | if (pos < 0) | |
2089 | pos = 0; | |
2090 | } | |
eb160463 | 2091 | else if (pos > (SSize_t)len) |
a0d0e21e | 2092 | pos = len; |
a0ed51b3 LW |
2093 | |
2094 | if (ulen) { | |
2095 | I32 p = pos; | |
2096 | sv_pos_u2b(lsv, &p, 0); | |
2097 | pos = p; | |
2098 | } | |
727405f8 | 2099 | |
3881461a AL |
2100 | found->mg_len = pos; |
2101 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 2102 | |
79072805 LW |
2103 | return 0; |
2104 | } | |
2105 | ||
2106 | int | |
864dbfa3 | 2107 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2108 | { |
2109 | STRLEN len; | |
35a4481c | 2110 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2111 | const char * const tmps = SvPV_const(lsv,len); |
777f7c56 EB |
2112 | STRLEN offs = LvTARGOFF(sv); |
2113 | STRLEN rem = LvTARGLEN(sv); | |
7918f24d NC |
2114 | |
2115 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2116 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2117 | |
9aa983d2 | 2118 | if (SvUTF8(lsv)) |
d931b1be | 2119 | offs = sv_pos_u2b_flags(lsv, offs, &rem, SV_CONST_RETURN); |
777f7c56 | 2120 | if (offs > len) |
6ff81951 | 2121 | offs = len; |
777f7c56 | 2122 | if (rem > len - offs) |
6ff81951 | 2123 | rem = len - offs; |
1c900557 | 2124 | sv_setpvn(sv, tmps + offs, rem); |
9aa983d2 | 2125 | if (SvUTF8(lsv)) |
2ef4b674 | 2126 | SvUTF8_on(sv); |
6ff81951 GS |
2127 | return 0; |
2128 | } | |
2129 | ||
2130 | int | |
864dbfa3 | 2131 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2132 | { |
97aff369 | 2133 | dVAR; |
9aa983d2 | 2134 | STRLEN len; |
5fcbf73d | 2135 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2136 | SV * const lsv = LvTARG(sv); |
777f7c56 EB |
2137 | STRLEN lvoff = LvTARGOFF(sv); |
2138 | STRLEN lvlen = LvTARGLEN(sv); | |
7918f24d NC |
2139 | |
2140 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2141 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2142 | |
1aa99e6b | 2143 | if (DO_UTF8(sv)) { |
9aa983d2 | 2144 | sv_utf8_upgrade(lsv); |
d931b1be | 2145 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
9aa983d2 | 2146 | sv_insert(lsv, lvoff, lvlen, tmps, len); |
b76f3ce2 | 2147 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
2148 | SvUTF8_on(lsv); |
2149 | } | |
9bf12eaf | 2150 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 2151 | const char *utf8; |
d931b1be | 2152 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
b76f3ce2 | 2153 | LvTARGLEN(sv) = len; |
5fcbf73d AL |
2154 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
2155 | sv_insert(lsv, lvoff, lvlen, utf8, len); | |
2156 | Safefree(utf8); | |
1aa99e6b | 2157 | } |
b76f3ce2 GB |
2158 | else { |
2159 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
2160 | LvTARGLEN(sv) = len; | |
2161 | } | |
2162 | ||
79072805 LW |
2163 | return 0; |
2164 | } | |
2165 | ||
2166 | int | |
864dbfa3 | 2167 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2168 | { |
97aff369 | 2169 | dVAR; |
7918f24d NC |
2170 | |
2171 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; | |
8772537c | 2172 | PERL_UNUSED_ARG(sv); |
7918f24d | 2173 | |
27cc343c | 2174 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2175 | return 0; |
2176 | } | |
2177 | ||
2178 | int | |
864dbfa3 | 2179 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2180 | { |
97aff369 | 2181 | dVAR; |
7918f24d NC |
2182 | |
2183 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; | |
8772537c | 2184 | PERL_UNUSED_ARG(sv); |
7918f24d | 2185 | |
b01e650a DM |
2186 | /* update taint status */ |
2187 | if (PL_tainted) | |
2188 | mg->mg_len |= 1; | |
2189 | else | |
2190 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2191 | return 0; |
2192 | } | |
2193 | ||
2194 | int | |
864dbfa3 | 2195 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2196 | { |
35a4481c | 2197 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2198 | |
2199 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2200 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2201 | |
6136c704 AL |
2202 | if (lsv) |
2203 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2204 | else | |
0c34ef67 | 2205 | SvOK_off(sv); |
6ff81951 | 2206 | |
6ff81951 GS |
2207 | return 0; |
2208 | } | |
2209 | ||
2210 | int | |
864dbfa3 | 2211 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2212 | { |
7918f24d | 2213 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2214 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2215 | do_vecset(sv); /* XXX slurp this routine */ |
2216 | return 0; | |
2217 | } | |
2218 | ||
2219 | int | |
864dbfa3 | 2220 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 2221 | { |
97aff369 | 2222 | dVAR; |
a0714e2c | 2223 | SV *targ = NULL; |
7918f24d NC |
2224 | |
2225 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2226 | ||
5f05dabc | 2227 | if (LvTARGLEN(sv)) { |
68dc0745 | 2228 | if (mg->mg_obj) { |
8772537c | 2229 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2230 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0); |
6d822dc4 MS |
2231 | if (he) |
2232 | targ = HeVAL(he); | |
68dc0745 | 2233 | } |
2234 | else { | |
502c6561 | 2235 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
68dc0745 | 2236 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2237 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2238 | } | |
46da273f | 2239 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2240 | /* somebody else defined it for us */ |
2241 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2242 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2243 | LvTARGLEN(sv) = 0; |
2244 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2245 | mg->mg_obj = NULL; |
68dc0745 | 2246 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2247 | } | |
5f05dabc | 2248 | } |
71be2cbc | 2249 | else |
2250 | targ = LvTARG(sv); | |
3280af22 | 2251 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 2252 | return 0; |
2253 | } | |
2254 | ||
2255 | int | |
864dbfa3 | 2256 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2257 | { |
7918f24d | 2258 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2259 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2260 | if (LvTARGLEN(sv)) |
68dc0745 | 2261 | vivify_defelem(sv); |
2262 | if (LvTARG(sv)) { | |
5f05dabc | 2263 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2264 | SvSETMAGIC(LvTARG(sv)); |
2265 | } | |
5f05dabc | 2266 | return 0; |
2267 | } | |
2268 | ||
71be2cbc | 2269 | void |
864dbfa3 | 2270 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2271 | { |
97aff369 | 2272 | dVAR; |
74e13ce4 | 2273 | MAGIC *mg; |
a0714e2c | 2274 | SV *value = NULL; |
71be2cbc | 2275 | |
7918f24d NC |
2276 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2277 | ||
14befaf4 | 2278 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2279 | return; |
68dc0745 | 2280 | if (mg->mg_obj) { |
8772537c | 2281 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2282 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0); |
6d822dc4 MS |
2283 | if (he) |
2284 | value = HeVAL(he); | |
3280af22 | 2285 | if (!value || value == &PL_sv_undef) |
be2597df | 2286 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2287 | } |
68dc0745 | 2288 | else { |
502c6561 | 2289 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
5aabfad6 | 2290 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2291 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2292 | else { |
d4c19fe8 | 2293 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2294 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2295 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2296 | } |
2297 | } | |
b37c2d43 | 2298 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2299 | SvREFCNT_dec(LvTARG(sv)); |
2300 | LvTARG(sv) = value; | |
71be2cbc | 2301 | LvTARGLEN(sv) = 0; |
68dc0745 | 2302 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2303 | mg->mg_obj = NULL; |
68dc0745 | 2304 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2305 | } |
2306 | ||
2307 | int | |
864dbfa3 | 2308 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2309 | { |
7918f24d | 2310 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
5648c0ae DM |
2311 | Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj)); |
2312 | return 0; | |
810b8aa5 GS |
2313 | } |
2314 | ||
2315 | int | |
864dbfa3 | 2316 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2317 | { |
7918f24d | 2318 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2319 | PERL_UNUSED_CONTEXT; |
565764a8 | 2320 | mg->mg_len = -1; |
1f730e6c FC |
2321 | if (!isGV_with_GP(sv)) |
2322 | SvSCREAM_off(sv); | |
93a17b20 LW |
2323 | return 0; |
2324 | } | |
2325 | ||
2326 | int | |
864dbfa3 | 2327 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2328 | { |
35a4481c | 2329 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2330 | |
7918f24d NC |
2331 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2332 | ||
79072805 | 2333 | if (uf && uf->uf_set) |
24f81a43 | 2334 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2335 | return 0; |
2336 | } | |
2337 | ||
c277df42 | 2338 | int |
faf82a0b AE |
2339 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2340 | { | |
488344d2 | 2341 | const char type = mg->mg_type; |
7918f24d NC |
2342 | |
2343 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2344 | ||
488344d2 NC |
2345 | if (type == PERL_MAGIC_qr) { |
2346 | } else if (type == PERL_MAGIC_bm) { | |
2347 | SvTAIL_off(sv); | |
2348 | SvVALID_off(sv); | |
2349 | } else { | |
2350 | assert(type == PERL_MAGIC_fm); | |
2351 | SvCOMPILED_off(sv); | |
2352 | } | |
2353 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2354 | } |
2355 | ||
7a4c00b4 | 2356 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2357 | int |
864dbfa3 | 2358 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2359 | { |
7918f24d NC |
2360 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2361 | ||
bbce6d69 | 2362 | /* |
838b5b74 | 2363 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2364 | * and vanished with a faint plop. |
2365 | */ | |
96a5add6 | 2366 | PERL_UNUSED_CONTEXT; |
8772537c | 2367 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2368 | if (mg->mg_ptr) { |
2369 | Safefree(mg->mg_ptr); | |
2370 | mg->mg_ptr = NULL; | |
565764a8 | 2371 | mg->mg_len = -1; |
7a4c00b4 | 2372 | } |
bbce6d69 | 2373 | return 0; |
2374 | } | |
7a4c00b4 | 2375 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2376 | |
7e8c5dac HS |
2377 | /* Just clear the UTF-8 cache data. */ |
2378 | int | |
2379 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2380 | { | |
7918f24d | 2381 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2382 | PERL_UNUSED_CONTEXT; |
8772537c | 2383 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2384 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2385 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2386 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2387 | return 0; | |
2388 | } | |
2389 | ||
bbce6d69 | 2390 | int |
864dbfa3 | 2391 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2392 | { |
97aff369 | 2393 | dVAR; |
e1ec3a88 | 2394 | register const char *s; |
2fdbfb4d AB |
2395 | register I32 paren; |
2396 | register const REGEXP * rx; | |
2397 | const char * const remaining = mg->mg_ptr + 1; | |
79072805 | 2398 | I32 i; |
8990e307 | 2399 | STRLEN len; |
125b9982 | 2400 | MAGIC *tmg; |
2fdbfb4d | 2401 | |
7918f24d NC |
2402 | PERL_ARGS_ASSERT_MAGIC_SET; |
2403 | ||
79072805 | 2404 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
2405 | case '\015': /* $^MATCH */ |
2406 | if (strEQ(remaining, "ATCH")) | |
2407 | goto do_match; | |
2408 | case '`': /* ${^PREMATCH} caught below */ | |
2409 | do_prematch: | |
f1b875a0 | 2410 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
2411 | goto setparen; |
2412 | case '\'': /* ${^POSTMATCH} caught below */ | |
2413 | do_postmatch: | |
f1b875a0 | 2414 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
2415 | goto setparen; |
2416 | case '&': | |
2417 | do_match: | |
f1b875a0 | 2418 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d AB |
2419 | goto setparen; |
2420 | case '1': case '2': case '3': case '4': | |
2421 | case '5': case '6': case '7': case '8': case '9': | |
104a8018 | 2422 | paren = atoi(mg->mg_ptr); |
2fdbfb4d | 2423 | setparen: |
1e05feb3 | 2424 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 2425 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
1e05feb3 | 2426 | } else { |
2fdbfb4d AB |
2427 | /* Croak with a READONLY error when a numbered match var is |
2428 | * set without a previous pattern match. Unless it's C<local $1> | |
2429 | */ | |
2430 | if (!PL_localizing) { | |
6ad8f254 | 2431 | Perl_croak_no_modify(aTHX); |
2fdbfb4d AB |
2432 | } |
2433 | } | |
9b9e0be4 | 2434 | break; |
748a9306 | 2435 | case '\001': /* ^A */ |
3280af22 | 2436 | sv_setsv(PL_bodytarget, sv); |
125b9982 NT |
2437 | /* mg_set() has temporarily made sv non-magical */ |
2438 | if (PL_tainting) { | |
2439 | if ((tmg = mg_find(sv,PERL_MAGIC_taint)) && tmg->mg_len & 1) | |
2440 | SvTAINTED_on(PL_bodytarget); | |
2441 | else | |
2442 | SvTAINTED_off(PL_bodytarget); | |
2443 | } | |
748a9306 | 2444 | break; |
49460fe6 | 2445 | case '\003': /* ^C */ |
f2338a2e | 2446 | PL_minus_c = cBOOL(SvIV(sv)); |
49460fe6 NIS |
2447 | break; |
2448 | ||
79072805 | 2449 | case '\004': /* ^D */ |
b4ab917c | 2450 | #ifdef DEBUGGING |
b83604b4 | 2451 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2452 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
a58fb6f9 CS |
2453 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
2454 | dump_all_perl(!DEBUG_B_TEST); | |
b4ab917c | 2455 | #else |
38ab35f8 | 2456 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2457 | #endif |
79072805 | 2458 | break; |
28f23441 | 2459 | case '\005': /* ^E */ |
d0063567 | 2460 | if (*(mg->mg_ptr+1) == '\0') { |
e37778c2 | 2461 | #ifdef VMS |
38ab35f8 | 2462 | set_vaxc_errno(SvIV(sv)); |
e37778c2 NC |
2463 | #else |
2464 | # ifdef WIN32 | |
d0063567 | 2465 | SetLastError( SvIV(sv) ); |
e37778c2 NC |
2466 | # else |
2467 | # ifdef OS2 | |
38ab35f8 | 2468 | os2_setsyserrno(SvIV(sv)); |
e37778c2 | 2469 | # else |
d0063567 | 2470 | /* will anyone ever use this? */ |
38ab35f8 | 2471 | SETERRNO(SvIV(sv), 4); |
048c1ddf IZ |
2472 | # endif |
2473 | # endif | |
22fae026 | 2474 | #endif |
d0063567 DK |
2475 | } |
2476 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
ef8d46e8 | 2477 | SvREFCNT_dec(PL_encoding); |
d0063567 DK |
2478 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2479 | PL_encoding = newSVsv(sv); | |
2480 | } | |
2481 | else { | |
a0714e2c | 2482 | PL_encoding = NULL; |
d0063567 DK |
2483 | } |
2484 | } | |
2485 | break; | |
79072805 | 2486 | case '\006': /* ^F */ |
38ab35f8 | 2487 | PL_maxsysfd = SvIV(sv); |
79072805 | 2488 | break; |
a0d0e21e | 2489 | case '\010': /* ^H */ |
38ab35f8 | 2490 | PL_hints = SvIV(sv); |
a0d0e21e | 2491 | break; |
9d116dd7 | 2492 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2493 | Safefree(PL_inplace); |
bd61b366 | 2494 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2495 | break; |
28f23441 | 2496 | case '\017': /* ^O */ |
ac27b0f5 | 2497 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2498 | Safefree(PL_osname); |
bd61b366 | 2499 | PL_osname = NULL; |
3511154c DM |
2500 | if (SvOK(sv)) { |
2501 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2502 | PL_osname = savesvpv(sv); |
3511154c | 2503 | } |
ac27b0f5 NIS |
2504 | } |
2505 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2506 | STRLEN len; |
2507 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2508 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 | 2509 | SV *tmp; |
8b850bd5 NC |
2510 | |
2511 | ||
2512 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
f747ebd6 | 2513 | PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; |
8b850bd5 NC |
2514 | |
2515 | /* Opening for input is more common than opening for output, so | |
2516 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 | 2517 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
f747ebd6 Z |
2518 | SvUTF8(sv)) |
2519 | : newSVpvs_flags("", SvUTF8(sv)); | |
2520 | (void)hv_stores(GvHV(PL_hintgv), "open>", tmp); | |
2521 | mg_set(tmp); | |
8b850bd5 | 2522 | |
f747ebd6 Z |
2523 | tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len, |
2524 | SvUTF8(sv)); | |
2525 | (void)hv_stores(GvHV(PL_hintgv), "open<", tmp); | |
2526 | mg_set(tmp); | |
ac27b0f5 | 2527 | } |
28f23441 | 2528 | break; |
79072805 | 2529 | case '\020': /* ^P */ |
2fdbfb4d AB |
2530 | if (*remaining == '\0') { /* ^P */ |
2531 | PL_perldb = SvIV(sv); | |
2532 | if (PL_perldb && !PL_DBsingle) | |
2533 | init_debugger(); | |
2534 | break; | |
2535 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2536 | goto do_prematch; | |
2537 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
2538 | goto do_postmatch; | |
2539 | } | |
9b9e0be4 | 2540 | break; |
79072805 | 2541 | case '\024': /* ^T */ |
88e89b8a | 2542 | #ifdef BIG_TIME |
6b88bc9c | 2543 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2544 | #else |
38ab35f8 | 2545 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2546 | #endif |
79072805 | 2547 | break; |
e07ea26a NC |
2548 | case '\025': /* ^UTF8CACHE */ |
2549 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2550 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2551 | } | |
2552 | break; | |
fde18df1 | 2553 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2554 | if (*(mg->mg_ptr+1) == '\0') { |
2555 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2556 | i = SvIV(sv); |
ac27b0f5 | 2557 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2558 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2559 | } |
599cee73 | 2560 | } |
0a378802 | 2561 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2562 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2563 | if (!SvPOK(sv) && PL_localizing) { |
2564 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2565 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2566 | break; |
2567 | } | |
f4fc7782 | 2568 | { |
b5477537 | 2569 | STRLEN len, i; |
d3a7d8c7 | 2570 | int accumulate = 0 ; |
f4fc7782 | 2571 | int any_fatals = 0 ; |
b83604b4 | 2572 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2573 | for (i = 0 ; i < len ; ++i) { |
2574 | accumulate |= ptr[i] ; | |
2575 | any_fatals |= (ptr[i] & 0xAA) ; | |
2576 | } | |
4243c432 NC |
2577 | if (!accumulate) { |
2578 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2579 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2580 | PL_compiling.cop_warnings = pWARN_NONE; | |
2581 | } | |
72dc9ed5 NC |
2582 | /* Yuck. I can't see how to abstract this: */ |
2583 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2584 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2585 | if (!specialWARN(PL_compiling.cop_warnings)) |
2586 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2587 | PL_compiling.cop_warnings = pWARN_ALL; |
2588 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2589 | } |
d3a7d8c7 | 2590 | else { |
72dc9ed5 NC |
2591 | STRLEN len; |
2592 | const char *const p = SvPV_const(sv, len); | |
2593 | ||
2594 | PL_compiling.cop_warnings | |
8ee4cf24 | 2595 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2596 | p, len); |
2597 | ||
d3a7d8c7 GS |
2598 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2599 | PL_dowarn |= G_WARN_ONCE ; | |
2600 | } | |
f4fc7782 | 2601 | |
d3a7d8c7 | 2602 | } |
4438c4b7 | 2603 | } |
971a9dd3 | 2604 | } |
79072805 LW |
2605 | break; |
2606 | case '.': | |
3280af22 NIS |
2607 | if (PL_localizing) { |
2608 | if (PL_localizing == 1) | |
7766f137 | 2609 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2610 | } |
3280af22 | 2611 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2612 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2613 | break; |
2614 | case '^': | |
099be4f1 DM |
2615 | if (isGV_with_GP(PL_defoutgv)) { |
2616 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); | |
2617 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2618 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
2619 | } | |
79072805 LW |
2620 | break; |
2621 | case '~': | |
099be4f1 DM |
2622 | if (isGV_with_GP(PL_defoutgv)) { |
2623 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); | |
2624 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2625 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
2626 | } | |
79072805 LW |
2627 | break; |
2628 | case '=': | |
099be4f1 DM |
2629 | if (isGV_with_GP(PL_defoutgv)) |
2630 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); | |
79072805 LW |
2631 | break; |
2632 | case '-': | |
099be4f1 DM |
2633 | if (isGV_with_GP(PL_defoutgv)) { |
2634 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); | |
2635 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
2636 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
2637 | } | |
79072805 LW |
2638 | break; |
2639 | case '%': | |
099be4f1 DM |
2640 | if (isGV_with_GP(PL_defoutgv)) |
2641 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); | |
79072805 LW |
2642 | break; |
2643 | case '|': | |
4b65379b | 2644 | { |
099be4f1 | 2645 | IO * const io = GvIO(PL_defoutgv); |
720f287d AB |
2646 | if(!io) |
2647 | break; | |
38ab35f8 | 2648 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2649 | IoFLAGS(io) &= ~IOf_FLUSH; |
2650 | else { | |
2651 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2652 | PerlIO *ofp = IoOFP(io); | |
2653 | if (ofp) | |
2654 | (void)PerlIO_flush(ofp); | |
2655 | IoFLAGS(io) |= IOf_FLUSH; | |
2656 | } | |
2657 | } | |
79072805 LW |
2658 | } |
2659 | break; | |
79072805 | 2660 | case '/': |
3280af22 | 2661 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2662 | PL_rs = newSVsv(sv); |
79072805 LW |
2663 | break; |
2664 | case '\\': | |
ef8d46e8 | 2665 | SvREFCNT_dec(PL_ors_sv); |
009c130f | 2666 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2667 | PL_ors_sv = newSVsv(sv); |
009c130f | 2668 | } |
e3c19b7b | 2669 | else { |
a0714e2c | 2670 | PL_ors_sv = NULL; |
e3c19b7b | 2671 | } |
79072805 | 2672 | break; |
79072805 | 2673 | case '[': |
38ab35f8 | 2674 | CopARYBASE_set(&PL_compiling, SvIV(sv)); |
79072805 LW |
2675 | break; |
2676 | case '?': | |
ff0cee69 | 2677 | #ifdef COMPLEX_STATUS |
6b88bc9c | 2678 | if (PL_localizing == 2) { |
41cb7b2b | 2679 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
2680 | PL_statusvalue = LvTARGOFF(sv); |
2681 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2682 | } |
2683 | else | |
2684 | #endif | |
2685 | #ifdef VMSISH_STATUS | |
2686 | if (VMSISH_STATUS) | |
fb38d079 | 2687 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2688 | else |
2689 | #endif | |
38ab35f8 | 2690 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2691 | break; |
2692 | case '!': | |
93189314 JH |
2693 | { |
2694 | #ifdef VMS | |
2695 | # define PERL_VMS_BANG vaxc$errno | |
2696 | #else | |
2697 | # define PERL_VMS_BANG 0 | |
2698 | #endif | |
91487cfc | 2699 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2700 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2701 | } | |
79072805 LW |
2702 | break; |
2703 | case '<': | |
38ab35f8 | 2704 | PL_uid = SvIV(sv); |
3280af22 NIS |
2705 | if (PL_delaymagic) { |
2706 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2707 | break; /* don't do magic till later */ |
2708 | } | |
2709 | #ifdef HAS_SETRUID | |
b28d0864 | 2710 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2711 | #else |
2712 | #ifdef HAS_SETREUID | |
3280af22 | 2713 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2714 | #else |
85e6fe83 | 2715 | #ifdef HAS_SETRESUID |
b28d0864 | 2716 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2717 | #else |
75870ed3 | 2718 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2719 | #ifdef PERL_DARWIN | |
2720 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2721 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2722 | (void)PerlProc_setuid(0); | |
2723 | #endif | |
b28d0864 | 2724 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2725 | } else { |
d8eceb89 | 2726 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2727 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2728 | } |
79072805 LW |
2729 | #endif |
2730 | #endif | |
85e6fe83 | 2731 | #endif |
d8eceb89 | 2732 | PL_uid = PerlProc_getuid(); |
79072805 LW |
2733 | break; |
2734 | case '>': | |
38ab35f8 | 2735 | PL_euid = SvIV(sv); |
3280af22 NIS |
2736 | if (PL_delaymagic) { |
2737 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2738 | break; /* don't do magic till later */ |
2739 | } | |
2740 | #ifdef HAS_SETEUID | |
3280af22 | 2741 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2742 | #else |
2743 | #ifdef HAS_SETREUID | |
b28d0864 | 2744 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2745 | #else |
2746 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2747 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2748 | #else |
b28d0864 NIS |
2749 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2750 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2751 | else { |
e8ee3774 | 2752 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2753 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2754 | } |
79072805 LW |
2755 | #endif |
2756 | #endif | |
85e6fe83 | 2757 | #endif |
d8eceb89 | 2758 | PL_euid = PerlProc_geteuid(); |
79072805 LW |
2759 | break; |
2760 | case '(': | |
38ab35f8 | 2761 | PL_gid = SvIV(sv); |
3280af22 NIS |
2762 | if (PL_delaymagic) { |
2763 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2764 | break; /* don't do magic till later */ |
2765 | } | |
2766 | #ifdef HAS_SETRGID | |
b28d0864 | 2767 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2768 | #else |
2769 | #ifdef HAS_SETREGID | |
3280af22 | 2770 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2771 | #else |
2772 | #ifdef HAS_SETRESGID | |
b28d0864 | 2773 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2774 | #else |
b28d0864 NIS |
2775 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2776 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2777 | else { |
d8eceb89 | 2778 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2779 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2780 | } |
79072805 LW |
2781 | #endif |
2782 | #endif | |
85e6fe83 | 2783 | #endif |
d8eceb89 | 2784 | PL_gid = PerlProc_getgid(); |
79072805 LW |
2785 | break; |
2786 | case ')': | |
5cd24f17 | 2787 | #ifdef HAS_SETGROUPS |
2788 | { | |
b83604b4 | 2789 | const char *p = SvPV_const(sv, len); |
757f63d8 | 2790 | Groups_t *gary = NULL; |
fb4089e0 | 2791 | #ifdef _SC_NGROUPS_MAX |
2792 | int maxgrp = sysconf(_SC_NGROUPS_MAX); | |
2793 | ||
2794 | if (maxgrp < 0) | |
2795 | maxgrp = NGROUPS; | |
2796 | #else | |
2797 | int maxgrp = NGROUPS; | |
2798 | #endif | |
757f63d8 SP |
2799 | |
2800 | while (isSPACE(*p)) | |
2801 | ++p; | |
2802 | PL_egid = Atol(p); | |
fb4089e0 | 2803 | for (i = 0; i < maxgrp; ++i) { |
757f63d8 SP |
2804 | while (*p && !isSPACE(*p)) |
2805 | ++p; | |
2806 | while (isSPACE(*p)) | |
2807 | ++p; | |
2808 | if (!*p) | |
2809 | break; | |
2810 | if(!gary) | |
2811 | Newx(gary, i + 1, Groups_t); | |
2812 | else | |
2813 | Renew(gary, i + 1, Groups_t); | |
2814 | gary[i] = Atol(p); | |
2815 | } | |
2816 | if (i) | |
2817 | (void)setgroups(i, gary); | |
f5a63d97 | 2818 | Safefree(gary); |
5cd24f17 | 2819 | } |
2820 | #else /* HAS_SETGROUPS */ | |
38ab35f8 | 2821 | PL_egid = SvIV(sv); |
5cd24f17 | 2822 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2823 | if (PL_delaymagic) { |
2824 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2825 | break; /* don't do magic till later */ |
2826 | } | |
2827 | #ifdef HAS_SETEGID | |
3280af22 | 2828 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2829 | #else |
2830 | #ifdef HAS_SETREGID | |
b28d0864 | 2831 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2832 | #else |
2833 | #ifdef HAS_SETRESGID | |
b28d0864 | 2834 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2835 | #else |
b28d0864 NIS |
2836 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2837 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2838 | else { |
d8eceb89 | 2839 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2840 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2841 | } |
79072805 LW |
2842 | #endif |
2843 | #endif | |
85e6fe83 | 2844 | #endif |
d8eceb89 | 2845 | PL_egid = PerlProc_getegid(); |
79072805 LW |
2846 | break; |
2847 | case ':': | |
2d8e6c8d | 2848 | PL_chopset = SvPV_force(sv,len); |
79072805 LW |
2849 | break; |
2850 | case '0': | |
e2975953 | 2851 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2852 | #ifdef HAS_SETPROCTITLE |
2853 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2854 | * show a string from the process struct and provide | |
2855 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2856 | if (PL_origalen != 1) { |
b83604b4 | 2857 | s = SvPV_const(sv, len); |
98b76f99 | 2858 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2859 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2860 | * but not the "(perl) suffix from the ps(1) |
2861 | * output, because that's what ps(1) shows if the | |
2862 | * argv[] is modified. */ | |
6f2ad931 | 2863 | setproctitle("-%s", s); |
9aad2c0e | 2864 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2865 | /* This doesn't really work if you assume that |
2866 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2867 | * because in ps(1) output the result will be like | |
2868 | * sprintf("perl: %s (perl)", s) | |
2869 | * I guess this is a security feature: | |
2870 | * one (a user process) cannot get rid of the original name. | |
2871 | * --jhi */ | |
2872 | setproctitle("%s", s); | |
2873 | # endif | |
2874 | } | |
9d3968b2 | 2875 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2876 | if (PL_origalen != 1) { |
17aa7f3d | 2877 | union pstun un; |
b83604b4 | 2878 | s = SvPV_const(sv, len); |
6867be6d | 2879 | un.pst_command = (char *)s; |
17aa7f3d JH |
2880 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2881 | } | |
9d3968b2 | 2882 | #else |
2d2af554 GA |
2883 | if (PL_origalen > 1) { |
2884 | /* PL_origalen is set in perl_parse(). */ | |
2885 | s = SvPV_force(sv,len); | |
2886 | if (len >= (STRLEN)PL_origalen-1) { | |
2887 | /* Longer than original, will be truncated. We assume that | |
2888 | * PL_origalen bytes are available. */ | |
2889 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
2890 | } | |
2891 | else { | |
2892 | /* Shorter than original, will be padded. */ | |
235ac35d | 2893 | #ifdef PERL_DARWIN |
60777a0d JH |
2894 | /* Special case for Mac OS X: see [perl #38868] */ |
2895 | const int pad = 0; | |
235ac35d | 2896 | #else |
8a89a4f1 MB |
2897 | /* Is the space counterintuitive? Yes. |
2898 | * (You were expecting \0?) | |
2899 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
2900 | * --jhi */ | |
60777a0d | 2901 | const int pad = ' '; |
235ac35d | 2902 | #endif |
60777a0d JH |
2903 | Copy(s, PL_origargv[0], len, char); |
2904 | PL_origargv[0][len] = 0; | |
2905 | memset(PL_origargv[0] + len + 1, | |
2906 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
2907 | } |
2908 | PL_origargv[0][PL_origalen-1] = 0; | |
2909 | for (i = 1; i < PL_origargc; i++) | |
2910 | PL_origargv[i] = 0; | |
7636ea95 AB |
2911 | #ifdef HAS_PRCTL_SET_NAME |
2912 | /* Set the legacy process name in addition to the POSIX name on Linux */ | |
2913 | if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) { | |
2914 | /* diag_listed_as: SKIPME */ | |
2915 | Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno)); | |
2916 | } | |
2917 | #endif | |
79072805 | 2918 | } |
9d3968b2 | 2919 | #endif |
e2975953 | 2920 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 LW |
2921 | break; |
2922 | } | |
2923 | return 0; | |
2924 | } | |
2925 | ||
2926 | I32 | |
35a4481c | 2927 | Perl_whichsig(pTHX_ const char *sig) |
79072805 | 2928 | { |
aadb217d | 2929 | register char* const* sigv; |
7918f24d NC |
2930 | |
2931 | PERL_ARGS_ASSERT_WHICHSIG; | |
96a5add6 | 2932 | PERL_UNUSED_CONTEXT; |
79072805 | 2933 | |
aadb217d | 2934 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
79072805 | 2935 | if (strEQ(sig,*sigv)) |
aadb217d | 2936 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 LW |
2937 | #ifdef SIGCLD |
2938 | if (strEQ(sig,"CHLD")) | |
2939 | return SIGCLD; | |
2940 | #endif | |
2941 | #ifdef SIGCHLD | |
2942 | if (strEQ(sig,"CLD")) | |
2943 | return SIGCHLD; | |
2944 | #endif | |
7f1236c0 | 2945 | return -1; |
79072805 LW |
2946 | } |
2947 | ||
ecfc5424 | 2948 | Signal_t |
1e82f5a6 | 2949 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 2950 | Perl_sighandler(int sig, siginfo_t *sip, void *uap PERL_UNUSED_DECL) |
1e82f5a6 SH |
2951 | #else |
2952 | Perl_sighandler(int sig) | |
2953 | #endif | |
79072805 | 2954 | { |
1018e26f NIS |
2955 | #ifdef PERL_GET_SIG_CONTEXT |
2956 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 2957 | #else |
cea2e8a9 | 2958 | dTHX; |
71d280e3 | 2959 | #endif |
79072805 | 2960 | dSP; |
a0714e2c SS |
2961 | GV *gv = NULL; |
2962 | SV *sv = NULL; | |
8772537c | 2963 | SV * const tSv = PL_Sv; |
601f1833 | 2964 | CV *cv = NULL; |
533c011a | 2965 | OP *myop = PL_op; |
84902520 | 2966 | U32 flags = 0; |
8772537c | 2967 | XPV * const tXpv = PL_Xpv; |
0c4d3b5e | 2968 | I32 old_ss_ix = PL_savestack_ix; |
71d280e3 | 2969 | |
84902520 | 2970 | |
727405f8 | 2971 | if (!PL_psig_ptr[sig]) { |
99ef548b | 2972 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
2973 | PL_sig_name[sig]); |
2974 | exit(sig); | |
2975 | } | |
ff0cee69 | 2976 | |
84902520 TB |
2977 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2978 | infinity, so we fix 4 (in fact 5): */ | |
72048cfe DM |
2979 | if (PL_savestack_ix + 15 <= PL_savestack_max) { |
2980 | flags |= 1; | |
3280af22 | 2981 | PL_savestack_ix += 5; /* Protect save in progress. */ |
0c4d3b5e | 2982 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, NULL); |
84902520 | 2983 | } |
72048cfe DM |
2984 | if (PL_markstack_ptr < PL_markstack_max - 2) { |
2985 | flags |= 2; | |
3280af22 | 2986 | PL_markstack_ptr++; /* Protect mark. */ |
72048cfe DM |
2987 | } |
2988 | if (PL_scopestack_ix < PL_scopestack_max - 3) { | |
2989 | flags |= 4; | |
2990 | PL_scopestack_ix++; | |
2991 | } | |
84902520 | 2992 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ea726b52 | 2993 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig]))) |
8772537c AL |
2994 | || SvTYPE(cv) != SVt_PVCV) { |
2995 | HV *st; | |
f2c0649b | 2996 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 2997 | } |
84902520 | 2998 | |
a0d0e21e | 2999 | if (!cv || !CvROOT(cv)) { |
a2a5de95 NC |
3000 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
3001 | PL_sig_name[sig], (gv ? GvENAME(gv) | |
3002 | : ((cv && CvGV(cv)) | |
3003 | ? GvENAME(CvGV(cv)) | |
3004 | : "__ANON__"))); | |
00d579c5 | 3005 | goto cleanup; |
79072805 LW |
3006 | } |
3007 | ||
0c4d3b5e DM |
3008 | sv = PL_psig_name[sig] |
3009 | ? SvREFCNT_inc_NN(PL_psig_name[sig]) | |
3010 | : newSVpv(PL_sig_name[sig],0); | |
72048cfe | 3011 | flags |= 8; |
0c4d3b5e DM |
3012 | SAVEFREESV(sv); |
3013 | ||
3014 | /* make sure our assumption about the size of the SAVEs are correct: | |
3015 | * 3 for SAVEDESTRUCTOR_X, 2 for SAVEFREESV */ | |
3016 | assert(old_ss_ix + 2 + ((flags & 1) ? 3+5 : 0) == PL_savestack_ix); | |
e336de0d | 3017 | |
e788e7d3 | 3018 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 3019 | PUSHMARK(SP); |
79072805 | 3020 | PUSHs(sv); |
8aad04aa JH |
3021 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
3022 | { | |
3023 | struct sigaction oact; | |
3024 | ||
3025 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
3026 | if (sip) { |
3027 | HV *sih = newHV(); | |
ad64d0ec | 3028 | SV *rv = newRV_noinc(MUTABLE_SV(sih)); |
8aad04aa JH |
3029 | /* The siginfo fields signo, code, errno, pid, uid, |
3030 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
3031 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
3032 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 3033 | #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 |
3034 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
3035 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
3036 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
3037 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
3038 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
3039 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 3040 | #endif |
8aad04aa | 3041 | EXTEND(SP, 2); |
ad64d0ec | 3042 | PUSHs(rv); |
22f1178f | 3043 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 3044 | } |
b4552a27 | 3045 | |
8aad04aa JH |
3046 | } |
3047 | } | |
3048 | #endif | |
79072805 | 3049 | PUTBACK; |
a0d0e21e | 3050 | |
ad64d0ec | 3051 | call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL); |
79072805 | 3052 | |
d3acc0f7 | 3053 | POPSTACK; |
1b266415 | 3054 | if (SvTRUE(ERRSV)) { |
1d615522 | 3055 | #ifndef PERL_MICRO |
983dbef6 | 3056 | #ifdef HAS_SIGPROCMASK |
1b266415 NIS |
3057 | /* Handler "died", for example to get out of a restart-able read(). |
3058 | * Before we re-do that on its behalf re-enable the signal which was | |
3059 | * blocked by the system when we entered. | |
3060 | */ | |
3061 | sigset_t set; | |
3062 | sigemptyset(&set); | |
3063 | sigaddset(&set,sig); | |
3064 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
3065 | #else | |
3066 | /* Not clear if this will work */ | |
3067 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 3068 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 | 3069 | #endif |
1d615522 | 3070 | #endif /* !PERL_MICRO */ |
c5df3096 | 3071 | die_sv(ERRSV); |
1b266415 | 3072 | } |
00d579c5 | 3073 | cleanup: |
0c4d3b5e DM |
3074 | /* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */ |
3075 | PL_savestack_ix = old_ss_ix; | |
72048cfe | 3076 | if (flags & 2) |
3280af22 | 3077 | PL_markstack_ptr--; |
72048cfe | 3078 | if (flags & 4) |
3280af22 | 3079 | PL_scopestack_ix -= 1; |
72048cfe | 3080 | if (flags & 8) |
84902520 | 3081 | SvREFCNT_dec(sv); |
533c011a | 3082 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 3083 | |
3280af22 NIS |
3084 | PL_Sv = tSv; /* Restore global temporaries. */ |
3085 | PL_Xpv = tXpv; | |
53bb94e2 | 3086 | return; |
79072805 | 3087 | } |
4e35701f NIS |
3088 | |
3089 | ||
51371543 | 3090 | static void |
8772537c | 3091 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3092 | { |
97aff369 | 3093 | dVAR; |
8772537c AL |
3094 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3095 | SV* const sv = mgs->mgs_sv; | |
51371543 GS |
3096 | |
3097 | if (!sv) | |
3098 | return; | |
3099 | ||
3100 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
3101 | { | |
f8c7b90f | 3102 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3103 | /* While magic was saved (and off) sv_setsv may well have seen |
3104 | this SV as a prime candidate for COW. */ | |
3105 | if (SvIsCOW(sv)) | |
e424a81e | 3106 | sv_force_normal_flags(sv, 0); |
f9701176 NC |
3107 | #endif |
3108 | ||
f9c6fee5 CS |
3109 | if (mgs->mgs_readonly) |
3110 | SvREADONLY_on(sv); | |
3111 | if (mgs->mgs_magical) | |
3112 | SvFLAGS(sv) |= mgs->mgs_magical; | |
51371543 GS |
3113 | else |
3114 | mg_magical(sv); | |
2b77b520 YST |
3115 | if (SvGMAGICAL(sv)) { |
3116 | /* downgrade public flags to private, | |
3117 | and discard any other private flags */ | |
3118 | ||
10edeb5d JH |
3119 | const U32 pubflags = SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK); |
3120 | if (pubflags) { | |
3121 | SvFLAGS(sv) &= ~( pubflags | (SVp_IOK|SVp_NOK|SVp_POK) ); | |
3122 | SvFLAGS(sv) |= ( pubflags << PRIVSHIFT ); | |
2b77b520 YST |
3123 | } |
3124 | } | |
51371543 GS |
3125 | } |
3126 | ||
3127 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
3128 | ||
3129 | /* If we're still on top of the stack, pop us off. (That condition | |
3130 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3131 | * if it's being called via leave_scope.) | |
3132 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3133 | * may leave alloc gunk on the savestack, and some code | |
3134 | * (e.g. sighandler) doesn't expect that... | |
3135 | */ | |
3136 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3137 | { | |
1be36ce0 NC |
3138 | UV popval = SSPOPUV; |
3139 | assert(popval == SAVEt_DESTRUCTOR_X); | |
51371543 | 3140 | PL_savestack_ix -= 2; |
1be36ce0 NC |
3141 | popval = SSPOPUV; |
3142 | assert((popval & SAVE_MASK) == SAVEt_ALLOC); | |
3143 | PL_savestack_ix -= popval >> SAVE_TIGHT_SHIFT; | |
51371543 GS |
3144 | } |
3145 | ||
3146 | } | |
3147 | ||
0c4d3b5e DM |
3148 | /* clean up the mess created by Perl_sighandler(). |
3149 | * Note that this is only called during an exit in a signal handler; | |
3150 | * a die is trapped by the call_sv() and the SAVEDESTRUCTOR_X manually | |
3151 | * skipped over. This is why we don't need to fix up the markstack and | |
3152 | * scopestack - they're going to be set to 0 anyway */ | |
3153 | ||
51371543 | 3154 | static void |
8772537c | 3155 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3156 | { |
27da23d5 | 3157 | dVAR; |
0c4d3b5e | 3158 | PERL_UNUSED_ARG(p); |
7918f24d | 3159 | |
0c4d3b5e | 3160 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
51371543 | 3161 | } |
1018e26f | 3162 | |
66610fdd | 3163 | /* |
b3ca2e83 NC |
3164 | =for apidoc magic_sethint |
3165 | ||
3166 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3167 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3168 | anything that would need a deep copy. Maybe we should warn if we find a | |
3169 | reference. | |
b3ca2e83 NC |
3170 | |
3171 | =cut | |
3172 | */ | |
3173 | int | |
3174 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3175 | { | |
3176 | dVAR; | |
ad64d0ec | 3177 | SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr) |
59cd0e26 | 3178 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3179 | |
7918f24d NC |
3180 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3181 | ||
e6e3e454 NC |
3182 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3183 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3184 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3185 | or take other more complex action. */ | |
3186 | ||
5b9c0671 NC |
3187 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3188 | Doing this here saves a lot of doing it manually in perl code (and | |
3189 | forgetting to do it, and consequent subtle errors. */ | |
3190 | PL_hints |= HINT_LOCALIZE_HH; | |
20439bc7 Z |
3191 | CopHINTHASH_set(&PL_compiling, |
3192 | cophh_store_sv(CopHINTHASH_get(&PL_compiling), key, 0, sv, 0)); | |
b3ca2e83 NC |
3193 | return 0; |
3194 | } | |
3195 | ||
3196 | /* | |
f175cff5 | 3197 | =for apidoc magic_clearhint |
b3ca2e83 | 3198 | |
c28fe1ec NC |
3199 | Triggered by a delete from %^H, records the key to |
3200 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3201 | |
3202 | =cut | |
3203 | */ | |
3204 | int | |
3205 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3206 | { | |
3207 | dVAR; | |
7918f24d NC |
3208 | |
3209 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; | |
f5a63d97 AL |
3210 | PERL_UNUSED_ARG(sv); |
3211 | ||
b3ca2e83 NC |
3212 | assert(mg->mg_len == HEf_SVKEY); |
3213 | ||
b3f24c00 MHM |
3214 | PERL_UNUSED_ARG(sv); |
3215 | ||
5b9c0671 | 3216 | PL_hints |= HINT_LOCALIZE_HH; |
20439bc7 Z |
3217 | CopHINTHASH_set(&PL_compiling, |
3218 | cophh_delete_sv(CopHINTHASH_get(&PL_compiling), | |
3219 | MUTABLE_SV(mg->mg_ptr), 0, 0)); | |
b3ca2e83 NC |
3220 | return 0; |
3221 | } | |
3222 | ||
3223 | /* | |
f747ebd6 Z |
3224 | =for apidoc magic_clearhints |
3225 | ||
3226 | Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>. | |
3227 | ||
3228 | =cut | |
3229 | */ | |
3230 | int | |
3231 | Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg) | |
3232 | { | |
3233 | PERL_ARGS_ASSERT_MAGIC_CLEARHINTS; | |
3234 | PERL_UNUSED_ARG(sv); | |
3235 | PERL_UNUSED_ARG(mg); | |
20439bc7 Z |
3236 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
3237 | CopHINTHASH_set(&PL_compiling, cophh_new_empty()); | |
f747ebd6 Z |
3238 | return 0; |
3239 | } | |
3240 | ||
3241 | /* | |
66610fdd RGS |
3242 | * Local variables: |
3243 | * c-indentation-style: bsd | |
3244 | * c-basic-offset: 4 | |
3245 | * indent-tabs-mode: t | |
3246 | * End: | |
3247 | * | |
37442d52 RGS |
3248 | * ex: set ts=8 sts=4 sw=4 noet: |
3249 | */ |