Commit | Line | Data |
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a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
4ac71550 TC |
12 | * Sam sat on the ground and put his head in his hands. 'I wish I had never |
13 | * come here, and I don't want to see no more magic,' he said, and fell silent. | |
14 | * | |
15 | * [p.363 of _The Lord of the Rings_, II/vii: "The Mirror of Galadriel"] | |
79072805 LW |
16 | */ |
17 | ||
ccfc67b7 JH |
18 | /* |
19 | =head1 Magical Functions | |
166f8a29 DM |
20 | |
21 | "Magic" is special data attached to SV structures in order to give them | |
22 | "magical" properties. When any Perl code tries to read from, or assign to, | |
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 | /* |
4bac9ae4 | 79 | * Pre-magic setup and post-magic takedown. |
c07a80fd | 80 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. |
81 | */ | |
82 | ||
83 | struct magic_state { | |
84 | SV* mgs_sv; | |
455ece5e | 85 | I32 mgs_ss_ix; |
f9c6fee5 CS |
86 | U32 mgs_magical; |
87 | bool mgs_readonly; | |
150b625d | 88 | bool mgs_bumped; |
c07a80fd | 89 | }; |
455ece5e | 90 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
91 | |
92 | STATIC void | |
8fb26106 | 93 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 94 | { |
97aff369 | 95 | dVAR; |
455ece5e | 96 | MGS* mgs; |
150b625d | 97 | bool bumped = FALSE; |
7918f24d NC |
98 | |
99 | PERL_ARGS_ASSERT_SAVE_MAGIC; | |
100 | ||
4bac9ae4 CS |
101 | assert(SvMAGICAL(sv)); |
102 | ||
150b625d DM |
103 | /* we shouldn't really be called here with RC==0, but it can sometimes |
104 | * happen via mg_clear() (which also shouldn't be called when RC==0, | |
105 | * but it can happen). Handle this case gracefully(ish) by not RC++ | |
106 | * and thus avoiding the resultant double free */ | |
107 | if (SvREFCNT(sv) > 0) { | |
108 | /* guard against sv getting freed midway through the mg clearing, | |
109 | * by holding a private reference for the duration. */ | |
110 | SvREFCNT_inc_simple_void_NN(sv); | |
111 | bumped = TRUE; | |
112 | } | |
8985fe98 | 113 | |
d8b2590f NC |
114 | /* Turning READONLY off for a copy-on-write scalar (including shared |
115 | hash keys) is a bad idea. */ | |
765f542d | 116 | if (SvIsCOW(sv)) |
9a265e59 | 117 | sv_force_normal_flags(sv, 0); |
c07a80fd | 118 | |
8772537c | 119 | SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
120 | |
121 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 122 | mgs->mgs_sv = sv; |
f9c6fee5 CS |
123 | mgs->mgs_magical = SvMAGICAL(sv); |
124 | mgs->mgs_readonly = SvREADONLY(sv) != 0; | |
455ece5e | 125 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
150b625d | 126 | mgs->mgs_bumped = bumped; |
c07a80fd | 127 | |
128 | SvMAGICAL_off(sv); | |
129 | SvREADONLY_off(sv); | |
c07a80fd | 130 | } |
131 | ||
954c1994 GS |
132 | /* |
133 | =for apidoc mg_magical | |
134 | ||
135 | Turns on the magical status of an SV. See C<sv_magic>. | |
136 | ||
137 | =cut | |
138 | */ | |
139 | ||
8990e307 | 140 | void |
864dbfa3 | 141 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 | 142 | { |
e1ec3a88 | 143 | const MAGIC* mg; |
7918f24d | 144 | PERL_ARGS_ASSERT_MG_MAGICAL; |
96a5add6 | 145 | PERL_UNUSED_CONTEXT; |
f9c6fee5 CS |
146 | |
147 | SvMAGICAL_off(sv); | |
218787bd | 148 | if ((mg = SvMAGIC(sv))) { |
218787bd VP |
149 | do { |
150 | const MGVTBL* const vtbl = mg->mg_virtual; | |
151 | if (vtbl) { | |
152 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) | |
153 | SvGMAGICAL_on(sv); | |
154 | if (vtbl->svt_set) | |
155 | SvSMAGICAL_on(sv); | |
156 | if (vtbl->svt_clear) | |
157 | SvRMAGICAL_on(sv); | |
158 | } | |
159 | } while ((mg = mg->mg_moremagic)); | |
160 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG))) | |
161 | SvRMAGICAL_on(sv); | |
8990e307 LW |
162 | } |
163 | } | |
164 | ||
954c1994 GS |
165 | /* |
166 | =for apidoc mg_get | |
167 | ||
168 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
169 | ||
170 | =cut | |
171 | */ | |
172 | ||
79072805 | 173 | int |
864dbfa3 | 174 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 175 | { |
97aff369 | 176 | dVAR; |
35a4481c | 177 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
f9c6fee5 | 178 | bool have_new = 0; |
ff76feab | 179 | MAGIC *newmg, *head, *cur, *mg; |
6683b158 | 180 | |
7918f24d NC |
181 | PERL_ARGS_ASSERT_MG_GET; |
182 | ||
407287f9 FC |
183 | if (PL_localizing == 1 && sv == DEFSV) return 0; |
184 | ||
455ece5e | 185 | save_magic(mgs_ix, sv); |
463ee0b2 | 186 | |
ff76feab AMS |
187 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
188 | list of magic. svt_get() may delete the current entry, add new | |
189 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
190 | ||
191 | newmg = cur = head = mg = SvMAGIC(sv); | |
192 | while (mg) { | |
35a4481c | 193 | const MGVTBL * const vtbl = mg->mg_virtual; |
f9c6fee5 | 194 | MAGIC * const nextmg = mg->mg_moremagic; /* it may delete itself */ |
ff76feab | 195 | |
2b260de0 | 196 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
16c91539 | 197 | vtbl->svt_get(aTHX_ sv, mg); |
b77f7d40 | 198 | |
58f82c5c DM |
199 | /* guard against magic having been deleted - eg FETCH calling |
200 | * untie */ | |
f9c6fee5 CS |
201 | if (!SvMAGIC(sv)) { |
202 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ | |
58f82c5c | 203 | break; |
f9c6fee5 | 204 | } |
b77f7d40 | 205 | |
f9c6fee5 | 206 | /* recalculate flags if this entry was deleted. */ |
ff76feab | 207 | if (mg->mg_flags & MGf_GSKIP) |
f9c6fee5 | 208 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; |
a0d0e21e | 209 | } |
ff76feab | 210 | |
f9c6fee5 | 211 | mg = nextmg; |
ff76feab | 212 | |
0723351e | 213 | if (have_new) { |
ff76feab AMS |
214 | /* Have we finished with the new entries we saw? Start again |
215 | where we left off (unless there are more new entries). */ | |
216 | if (mg == head) { | |
0723351e | 217 | have_new = 0; |
ff76feab AMS |
218 | mg = cur; |
219 | head = newmg; | |
220 | } | |
221 | } | |
222 | ||
223 | /* Were any new entries added? */ | |
0723351e NC |
224 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
225 | have_new = 1; | |
ff76feab AMS |
226 | cur = mg; |
227 | mg = newmg; | |
f9c6fee5 | 228 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ |
760ac839 | 229 | } |
79072805 | 230 | } |
463ee0b2 | 231 | |
8772537c | 232 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); |
79072805 LW |
233 | return 0; |
234 | } | |
235 | ||
954c1994 GS |
236 | /* |
237 | =for apidoc mg_set | |
238 | ||
239 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
240 | ||
241 | =cut | |
242 | */ | |
243 | ||
79072805 | 244 | int |
864dbfa3 | 245 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 246 | { |
97aff369 | 247 | dVAR; |
35a4481c | 248 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 249 | MAGIC* mg; |
463ee0b2 LW |
250 | MAGIC* nextmg; |
251 | ||
7918f24d NC |
252 | PERL_ARGS_ASSERT_MG_SET; |
253 | ||
b5ed8c44 FC |
254 | if (PL_localizing == 2 && sv == DEFSV) return 0; |
255 | ||
455ece5e | 256 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
257 | |
258 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 259 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 260 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
261 | if (mg->mg_flags & MGf_GSKIP) { |
262 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
f9c6fee5 | 263 | (SSPTR(mgs_ix, MGS*))->mgs_magical = 0; |
a0d0e21e | 264 | } |
e0a73de4 | 265 | if (PL_localizing == 2 |
b5ed8c44 | 266 | && PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
e7cbf6c6 | 267 | continue; |
2b260de0 | 268 | if (vtbl && vtbl->svt_set) |
16c91539 | 269 | vtbl->svt_set(aTHX_ sv, mg); |
79072805 | 270 | } |
463ee0b2 | 271 | |
8772537c | 272 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
273 | return 0; |
274 | } | |
275 | ||
954c1994 GS |
276 | /* |
277 | =for apidoc mg_length | |
278 | ||
279 | Report on the SV's length. See C<sv_magic>. | |
280 | ||
281 | =cut | |
282 | */ | |
283 | ||
79072805 | 284 | U32 |
864dbfa3 | 285 | Perl_mg_length(pTHX_ SV *sv) |
79072805 | 286 | { |
97aff369 | 287 | dVAR; |
79072805 | 288 | MAGIC* mg; |
463ee0b2 | 289 | STRLEN len; |
463ee0b2 | 290 | |
7918f24d NC |
291 | PERL_ARGS_ASSERT_MG_LENGTH; |
292 | ||
79072805 | 293 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 294 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 295 | if (vtbl && vtbl->svt_len) { |
35a4481c | 296 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 297 | save_magic(mgs_ix, sv); |
a0d0e21e | 298 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 299 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 300 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
301 | return len; |
302 | } | |
303 | } | |
304 | ||
d0644529 NC |
305 | { |
306 | /* You can't know whether it's UTF-8 until you get the string again... | |
307 | */ | |
10516c54 | 308 | const U8 *s = (U8*)SvPV_const(sv, len); |
d0644529 NC |
309 | |
310 | if (DO_UTF8(sv)) { | |
311 | len = utf8_length(s, s + len); | |
312 | } | |
5636d518 | 313 | } |
463ee0b2 | 314 | return len; |
79072805 LW |
315 | } |
316 | ||
8fb26106 | 317 | I32 |
864dbfa3 | 318 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
319 | { |
320 | MAGIC* mg; | |
ac27b0f5 | 321 | |
7918f24d NC |
322 | PERL_ARGS_ASSERT_MG_SIZE; |
323 | ||
93965878 | 324 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 325 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 326 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
327 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
328 | I32 len; | |
455ece5e | 329 | save_magic(mgs_ix, sv); |
93965878 | 330 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 331 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 332 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
333 | return len; |
334 | } | |
335 | } | |
336 | ||
337 | switch(SvTYPE(sv)) { | |
338 | case SVt_PVAV: | |
502c6561 | 339 | return AvFILLp((const AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
340 | case SVt_PVHV: |
341 | /* FIXME */ | |
342 | default: | |
cea2e8a9 | 343 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
344 | break; |
345 | } | |
346 | return 0; | |
347 | } | |
348 | ||
954c1994 GS |
349 | /* |
350 | =for apidoc mg_clear | |
351 | ||
352 | Clear something magical that the SV represents. See C<sv_magic>. | |
353 | ||
354 | =cut | |
355 | */ | |
356 | ||
79072805 | 357 | int |
864dbfa3 | 358 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 359 | { |
35a4481c | 360 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 361 | MAGIC* mg; |
8ac77ac9 | 362 | MAGIC *nextmg; |
463ee0b2 | 363 | |
7918f24d NC |
364 | PERL_ARGS_ASSERT_MG_CLEAR; |
365 | ||
455ece5e | 366 | save_magic(mgs_ix, sv); |
463ee0b2 | 367 | |
8ac77ac9 | 368 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
35a4481c | 369 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 370 | /* omit GSKIP -- never set here */ |
727405f8 | 371 | |
8ac77ac9 NC |
372 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
373 | ||
2b260de0 | 374 | if (vtbl && vtbl->svt_clear) |
16c91539 | 375 | vtbl->svt_clear(aTHX_ sv, mg); |
79072805 | 376 | } |
463ee0b2 | 377 | |
8772537c | 378 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
379 | return 0; |
380 | } | |
381 | ||
ed624ca8 | 382 | static MAGIC* |
39de7f53 FR |
383 | S_mg_findext_flags(pTHX_ const SV *sv, int type, const MGVTBL *vtbl, U32 flags) |
384 | { | |
385 | PERL_UNUSED_CONTEXT; | |
386 | ||
387 | assert(flags <= 1); | |
388 | ||
389 | if (sv) { | |
390 | MAGIC *mg; | |
391 | ||
392 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
393 | if (mg->mg_type == type && (!flags || mg->mg_virtual == vtbl)) { | |
394 | return mg; | |
395 | } | |
396 | } | |
397 | } | |
398 | ||
399 | return NULL; | |
400 | } | |
401 | ||
954c1994 GS |
402 | /* |
403 | =for apidoc mg_find | |
404 | ||
405 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
406 | ||
407 | =cut | |
408 | */ | |
409 | ||
93a17b20 | 410 | MAGIC* |
35a4481c | 411 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 412 | { |
39de7f53 FR |
413 | return S_mg_findext_flags(aTHX_ sv, type, NULL, 0); |
414 | } | |
415 | ||
416 | /* | |
417 | =for apidoc mg_findext | |
418 | ||
419 | Finds the magic pointer of C<type> with the given C<vtbl> for the C<SV>. See | |
420 | C<sv_magicext>. | |
421 | ||
422 | =cut | |
423 | */ | |
424 | ||
425 | MAGIC* | |
426 | Perl_mg_findext(pTHX_ const SV *sv, int type, const MGVTBL *vtbl) | |
427 | { | |
428 | return S_mg_findext_flags(aTHX_ sv, type, vtbl, 1); | |
93a17b20 LW |
429 | } |
430 | ||
954c1994 GS |
431 | /* |
432 | =for apidoc mg_copy | |
433 | ||
434 | Copies the magic from one SV to another. See C<sv_magic>. | |
435 | ||
436 | =cut | |
437 | */ | |
438 | ||
79072805 | 439 | int |
864dbfa3 | 440 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 441 | { |
463ee0b2 | 442 | int count = 0; |
79072805 | 443 | MAGIC* mg; |
7918f24d NC |
444 | |
445 | PERL_ARGS_ASSERT_MG_COPY; | |
446 | ||
463ee0b2 | 447 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 448 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 | 449 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
16c91539 | 450 | count += vtbl->svt_copy(aTHX_ sv, mg, nsv, key, klen); |
68795e93 | 451 | } |
823a54a3 AL |
452 | else { |
453 | const char type = mg->mg_type; | |
1e73acc8 | 454 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
455 | sv_magic(nsv, |
456 | (type == PERL_MAGIC_tied) | |
457 | ? SvTIED_obj(sv, mg) | |
458 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
459 | ? sv | |
460 | : mg->mg_obj, | |
461 | toLOWER(type), key, klen); | |
462 | count++; | |
463 | } | |
79072805 | 464 | } |
79072805 | 465 | } |
463ee0b2 | 466 | return count; |
79072805 LW |
467 | } |
468 | ||
954c1994 | 469 | /* |
0cbee0a4 DM |
470 | =for apidoc mg_localize |
471 | ||
9711599e CS |
472 | Copy some of the magic from an existing SV to new localized version of that |
473 | SV. Container magic (eg %ENV, $1, tie) gets copied, value magic doesn't (eg | |
474 | taint, pos). | |
475 | ||
af7df257 | 476 | If setmagic is false then no set magic will be called on the new (empty) SV. |
9711599e CS |
477 | This typically means that assignment will soon follow (e.g. 'local $x = $y'), |
478 | and that will handle the magic. | |
0cbee0a4 DM |
479 | |
480 | =cut | |
481 | */ | |
482 | ||
483 | void | |
af7df257 | 484 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv, bool setmagic) |
0cbee0a4 | 485 | { |
97aff369 | 486 | dVAR; |
0cbee0a4 | 487 | MAGIC *mg; |
7918f24d NC |
488 | |
489 | PERL_ARGS_ASSERT_MG_LOCALIZE; | |
490 | ||
658a9f31 JD |
491 | if (nsv == DEFSV) |
492 | return; | |
493 | ||
0cbee0a4 | 494 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
2b1b43ea | 495 | const MGVTBL* const vtbl = mg->mg_virtual; |
e0a73de4 | 496 | if (PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
0cbee0a4 | 497 | continue; |
0cbee0a4 | 498 | |
a5063e7c | 499 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
16c91539 | 500 | (void)vtbl->svt_local(aTHX_ nsv, mg); |
a5063e7c | 501 | else |
0cbee0a4 DM |
502 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
503 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 504 | |
0cbee0a4 | 505 | /* container types should remain read-only across localization */ |
b2b95e4c | 506 | if (!SvIsCOW(sv)) SvFLAGS(nsv) |= SvREADONLY(sv); |
0cbee0a4 DM |
507 | } |
508 | ||
509 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
510 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
af7df257 | 511 | if (setmagic) { |
9711599e CS |
512 | PL_localizing = 1; |
513 | SvSETMAGIC(nsv); | |
514 | PL_localizing = 0; | |
515 | } | |
0cbee0a4 DM |
516 | } |
517 | } | |
518 | ||
d9088386 Z |
519 | #define mg_free_struct(sv, mg) S_mg_free_struct(aTHX_ sv, mg) |
520 | static void | |
521 | S_mg_free_struct(pTHX_ SV *sv, MAGIC *mg) | |
522 | { | |
523 | const MGVTBL* const vtbl = mg->mg_virtual; | |
524 | if (vtbl && vtbl->svt_free) | |
525 | vtbl->svt_free(aTHX_ sv, mg); | |
526 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { | |
527 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) | |
528 | Safefree(mg->mg_ptr); | |
529 | else if (mg->mg_len == HEf_SVKEY) | |
530 | SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr)); | |
531 | } | |
532 | if (mg->mg_flags & MGf_REFCOUNTED) | |
533 | SvREFCNT_dec(mg->mg_obj); | |
534 | Safefree(mg); | |
535 | } | |
536 | ||
0cbee0a4 | 537 | /* |
954c1994 GS |
538 | =for apidoc mg_free |
539 | ||
540 | Free any magic storage used by the SV. See C<sv_magic>. | |
541 | ||
542 | =cut | |
543 | */ | |
544 | ||
79072805 | 545 | int |
864dbfa3 | 546 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
547 | { |
548 | MAGIC* mg; | |
549 | MAGIC* moremagic; | |
7918f24d NC |
550 | |
551 | PERL_ARGS_ASSERT_MG_FREE; | |
552 | ||
79072805 | 553 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
79072805 | 554 | moremagic = mg->mg_moremagic; |
d9088386 | 555 | mg_free_struct(sv, mg); |
c826f41b | 556 | SvMAGIC_set(sv, moremagic); |
79072805 | 557 | } |
b162af07 | 558 | SvMAGIC_set(sv, NULL); |
68f8932e | 559 | SvMAGICAL_off(sv); |
79072805 LW |
560 | return 0; |
561 | } | |
562 | ||
d9088386 Z |
563 | /* |
564 | =for apidoc Am|void|mg_free_type|SV *sv|int how | |
565 | ||
566 | Remove any magic of type I<how> from the SV I<sv>. See L</sv_magic>. | |
567 | ||
568 | =cut | |
569 | */ | |
570 | ||
571 | void | |
572 | Perl_mg_free_type(pTHX_ SV *sv, int how) | |
573 | { | |
574 | MAGIC *mg, *prevmg, *moremg; | |
575 | PERL_ARGS_ASSERT_MG_FREE_TYPE; | |
576 | for (prevmg = NULL, mg = SvMAGIC(sv); mg; prevmg = mg, mg = moremg) { | |
577 | MAGIC *newhead; | |
578 | moremg = mg->mg_moremagic; | |
579 | if (mg->mg_type == how) { | |
580 | /* temporarily move to the head of the magic chain, in case | |
581 | custom free code relies on this historical aspect of mg_free */ | |
582 | if (prevmg) { | |
583 | prevmg->mg_moremagic = moremg; | |
584 | mg->mg_moremagic = SvMAGIC(sv); | |
585 | SvMAGIC_set(sv, mg); | |
586 | } | |
587 | newhead = mg->mg_moremagic; | |
588 | mg_free_struct(sv, mg); | |
589 | SvMAGIC_set(sv, newhead); | |
590 | mg = prevmg; | |
591 | } | |
592 | } | |
593 | mg_magical(sv); | |
594 | } | |
595 | ||
79072805 | 596 | #include <signal.h> |
79072805 | 597 | |
942e002e | 598 | U32 |
864dbfa3 | 599 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 600 | { |
97aff369 | 601 | dVAR; |
8772537c | 602 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 603 | |
7918f24d NC |
604 | PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT; |
605 | ||
0bd48802 AL |
606 | if (PL_curpm) { |
607 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
608 | if (rx) { | |
a678b0e4 YO |
609 | if (mg->mg_obj) { /* @+ */ |
610 | /* return the number possible */ | |
07bc277f | 611 | return RX_NPARENS(rx); |
a678b0e4 | 612 | } else { /* @- */ |
07bc277f | 613 | I32 paren = RX_LASTPAREN(rx); |
a678b0e4 YO |
614 | |
615 | /* return the last filled */ | |
f46c4081 | 616 | while ( paren >= 0 |
07bc277f NC |
617 | && (RX_OFFS(rx)[paren].start == -1 |
618 | || RX_OFFS(rx)[paren].end == -1) ) | |
f46c4081 | 619 | paren--; |
a678b0e4 YO |
620 | return (U32)paren; |
621 | } | |
0bd48802 | 622 | } |
8f580fb8 | 623 | } |
ac27b0f5 | 624 | |
942e002e | 625 | return (U32)-1; |
6cef1e77 IZ |
626 | } |
627 | ||
628 | int | |
864dbfa3 | 629 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 630 | { |
97aff369 | 631 | dVAR; |
7918f24d NC |
632 | |
633 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET; | |
634 | ||
0bd48802 AL |
635 | if (PL_curpm) { |
636 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
637 | if (rx) { | |
638 | register const I32 paren = mg->mg_len; | |
639 | register I32 s; | |
640 | register I32 t; | |
641 | if (paren < 0) | |
642 | return 0; | |
07bc277f NC |
643 | if (paren <= (I32)RX_NPARENS(rx) && |
644 | (s = RX_OFFS(rx)[paren].start) != -1 && | |
645 | (t = RX_OFFS(rx)[paren].end) != -1) | |
0bd48802 AL |
646 | { |
647 | register I32 i; | |
648 | if (mg->mg_obj) /* @+ */ | |
649 | i = t; | |
650 | else /* @- */ | |
651 | i = s; | |
652 | ||
653 | if (i > 0 && RX_MATCH_UTF8(rx)) { | |
07bc277f | 654 | const char * const b = RX_SUBBEG(rx); |
0bd48802 | 655 | if (b) |
f5a63d97 | 656 | i = utf8_length((U8*)b, (U8*)(b+i)); |
0bd48802 | 657 | } |
727405f8 | 658 | |
0bd48802 | 659 | sv_setiv(sv, i); |
1aa99e6b | 660 | } |
0bd48802 | 661 | } |
6cef1e77 IZ |
662 | } |
663 | return 0; | |
664 | } | |
665 | ||
e4b89193 | 666 | int |
a29d06ed MG |
667 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
668 | { | |
7918f24d | 669 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET; |
d4c19fe8 AL |
670 | PERL_UNUSED_ARG(sv); |
671 | PERL_UNUSED_ARG(mg); | |
6ad8f254 | 672 | Perl_croak_no_modify(aTHX); |
0dbb1585 | 673 | NORETURN_FUNCTION_END; |
a29d06ed MG |
674 | } |
675 | ||
93a17b20 | 676 | U32 |
864dbfa3 | 677 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 678 | { |
97aff369 | 679 | dVAR; |
93a17b20 | 680 | register I32 paren; |
93a17b20 | 681 | register I32 i; |
2fdbfb4d AB |
682 | register const REGEXP * rx; |
683 | const char * const remaining = mg->mg_ptr + 1; | |
93a17b20 | 684 | |
7918f24d NC |
685 | PERL_ARGS_ASSERT_MAGIC_LEN; |
686 | ||
93a17b20 | 687 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
688 | case '\020': |
689 | if (*remaining == '\0') { /* ^P */ | |
690 | break; | |
691 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
692 | goto do_prematch; | |
693 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
694 | goto do_postmatch; | |
695 | } | |
696 | break; | |
697 | case '\015': /* $^MATCH */ | |
698 | if (strEQ(remaining, "ATCH")) { | |
699 | goto do_match; | |
700 | } else { | |
701 | break; | |
702 | } | |
703 | case '`': | |
704 | do_prematch: | |
f1b875a0 | 705 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
706 | goto maybegetparen; |
707 | case '\'': | |
708 | do_postmatch: | |
f1b875a0 | 709 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
710 | goto maybegetparen; |
711 | case '&': | |
712 | do_match: | |
f1b875a0 | 713 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d | 714 | goto maybegetparen; |
93a17b20 | 715 | case '1': case '2': case '3': case '4': |
2fdbfb4d AB |
716 | case '5': case '6': case '7': case '8': case '9': |
717 | paren = atoi(mg->mg_ptr); | |
718 | maybegetparen: | |
aaa362c4 | 719 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
720 | getparen: |
721 | i = CALLREG_NUMBUF_LENGTH((REGEXP * const)rx, sv, paren); | |
cf93c79d | 722 | |
ffc61ed2 | 723 | if (i < 0) |
0844c848 | 724 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 725 | return i; |
2fdbfb4d | 726 | } else { |
235bddc8 | 727 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 728 | report_uninit(sv); |
2fdbfb4d | 729 | return 0; |
93a17b20 | 730 | } |
93a17b20 | 731 | case '+': |
aaa362c4 | 732 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f | 733 | paren = RX_LASTPAREN(rx); |
13f57bf8 CS |
734 | if (paren) |
735 | goto getparen; | |
93a17b20 | 736 | } |
748a9306 | 737 | return 0; |
a01268b5 JH |
738 | case '\016': /* ^N */ |
739 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f | 740 | paren = RX_LASTCLOSEPAREN(rx); |
a01268b5 JH |
741 | if (paren) |
742 | goto getparen; | |
743 | } | |
744 | return 0; | |
93a17b20 LW |
745 | } |
746 | magic_get(sv,mg); | |
2d8e6c8d | 747 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 | 748 | sv_2pv(sv, 0); |
2d8e6c8d | 749 | } |
93a17b20 LW |
750 | if (SvPOK(sv)) |
751 | return SvCUR(sv); | |
752 | return 0; | |
753 | } | |
754 | ||
ad3296c6 | 755 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
756 | if (SvPOK(sv)) { \ |
757 | STRLEN len = SvCUR(sv); \ | |
758 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
759 | while (len > 0 && isSPACE(p[len-1])) \ |
760 | --len; \ | |
761 | SvCUR_set(sv, len); \ | |
762 | p[len] = '\0'; \ | |
763 | } \ | |
ad3296c6 SH |
764 | } STMT_END |
765 | ||
8b850bd5 NC |
766 | void |
767 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
768 | { | |
7918f24d NC |
769 | PERL_ARGS_ASSERT_EMULATE_COP_IO; |
770 | ||
8b850bd5 NC |
771 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) |
772 | sv_setsv(sv, &PL_sv_undef); | |
773 | else { | |
774 | sv_setpvs(sv, ""); | |
775 | SvUTF8_off(sv); | |
776 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
20439bc7 | 777 | SV *const value = cop_hints_fetch_pvs(c, "open<", 0); |
8b850bd5 NC |
778 | assert(value); |
779 | sv_catsv(sv, value); | |
780 | } | |
781 | sv_catpvs(sv, "\0"); | |
782 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
20439bc7 | 783 | SV *const value = cop_hints_fetch_pvs(c, "open>", 0); |
8b850bd5 NC |
784 | assert(value); |
785 | sv_catsv(sv, value); | |
786 | } | |
787 | } | |
788 | } | |
789 | ||
25bbd826 CB |
790 | #ifdef VMS |
791 | #include <descrip.h> | |
792 | #include <starlet.h> | |
793 | #endif | |
794 | ||
79072805 | 795 | int |
864dbfa3 | 796 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 797 | { |
27da23d5 | 798 | dVAR; |
79072805 | 799 | register I32 paren; |
db7198b5 | 800 | register const char *s = NULL; |
d9f97599 | 801 | register REGEXP *rx; |
823a54a3 AL |
802 | const char * const remaining = mg->mg_ptr + 1; |
803 | const char nextchar = *remaining; | |
79072805 | 804 | |
7918f24d NC |
805 | PERL_ARGS_ASSERT_MAGIC_GET; |
806 | ||
79072805 | 807 | switch (*mg->mg_ptr) { |
748a9306 | 808 | case '\001': /* ^A */ |
3280af22 | 809 | sv_setsv(sv, PL_bodytarget); |
125b9982 NT |
810 | if (SvTAINTED(PL_bodytarget)) |
811 | SvTAINTED_on(sv); | |
748a9306 | 812 | break; |
e5218da5 | 813 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 814 | if (nextchar == '\0') { |
e5218da5 GA |
815 | sv_setiv(sv, (IV)PL_minus_c); |
816 | } | |
823a54a3 | 817 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
818 | sv_setiv(sv, (IV)STATUS_NATIVE); |
819 | } | |
49460fe6 NIS |
820 | break; |
821 | ||
79072805 | 822 | case '\004': /* ^D */ |
aea4f609 | 823 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 824 | break; |
28f23441 | 825 | case '\005': /* ^E */ |
823a54a3 | 826 | if (nextchar == '\0') { |
e37778c2 | 827 | #if defined(VMS) |
0a378802 | 828 | { |
0a378802 JH |
829 | char msg[255]; |
830 | $DESCRIPTOR(msgdsc,msg); | |
831 | sv_setnv(sv,(NV) vaxc$errno); | |
832 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
833 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
834 | else | |
76f68e9b | 835 | sv_setpvs(sv,""); |
0a378802 | 836 | } |
4b645107 | 837 | #elif defined(OS2) |
0a378802 JH |
838 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
839 | sv_setnv(sv, (NV)errno); | |
840 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
841 | } else { | |
842 | if (errno != errno_isOS2) { | |
823a54a3 | 843 | const int tmp = _syserrno(); |
0a378802 JH |
844 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
845 | Perl_rc = tmp; | |
846 | } | |
847 | sv_setnv(sv, (NV)Perl_rc); | |
848 | sv_setpv(sv, os2error(Perl_rc)); | |
849 | } | |
4b645107 | 850 | #elif defined(WIN32) |
0a378802 | 851 | { |
d4c19fe8 | 852 | const DWORD dwErr = GetLastError(); |
0a378802 | 853 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 854 | if (dwErr) { |
0a378802 JH |
855 | PerlProc_GetOSError(sv, dwErr); |
856 | } | |
857 | else | |
76f68e9b | 858 | sv_setpvs(sv, ""); |
0a378802 JH |
859 | SetLastError(dwErr); |
860 | } | |
22fae026 | 861 | #else |
f6c8f21d | 862 | { |
4ee39169 | 863 | dSAVE_ERRNO; |
f6c8f21d | 864 | sv_setnv(sv, (NV)errno); |
666ea192 | 865 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 866 | RESTORE_ERRNO; |
f6c8f21d | 867 | } |
28f23441 | 868 | #endif |
ad3296c6 | 869 | SvRTRIM(sv); |
0a378802 JH |
870 | SvNOK_on(sv); /* what a wonderful hack! */ |
871 | } | |
823a54a3 | 872 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
873 | sv_setsv(sv, PL_encoding); |
874 | break; | |
79072805 | 875 | case '\006': /* ^F */ |
3280af22 | 876 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 877 | break; |
9ebf26ad FR |
878 | case '\007': /* ^GLOBAL_PHASE */ |
879 | if (strEQ(remaining, "LOBAL_PHASE")) { | |
880 | sv_setpvn(sv, PL_phase_names[PL_phase], | |
881 | strlen(PL_phase_names[PL_phase])); | |
882 | } | |
883 | break; | |
a0d0e21e | 884 | case '\010': /* ^H */ |
3280af22 | 885 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 886 | break; |
9d116dd7 | 887 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 888 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 889 | break; |
ac27b0f5 | 890 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 891 | if (nextchar == '\0') { |
ac27b0f5 | 892 | sv_setpv(sv, PL_osname); |
3511154c DM |
893 | SvTAINTED_off(sv); |
894 | } | |
823a54a3 | 895 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 896 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 897 | } |
28f23441 | 898 | break; |
9ebf26ad | 899 | case '\020': |
cde0cee5 YO |
900 | if (nextchar == '\0') { /* ^P */ |
901 | sv_setiv(sv, (IV)PL_perldb); | |
902 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
903 | goto do_prematch_fetch; | |
904 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
905 | goto do_postmatch_fetch; | |
906 | } | |
79072805 | 907 | break; |
fb73857a | 908 | case '\023': /* ^S */ |
823a54a3 | 909 | if (nextchar == '\0') { |
bc177e6b | 910 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 911 | SvOK_off(sv); |
3280af22 | 912 | else if (PL_in_eval) |
6dc8a9e4 | 913 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
914 | else |
915 | sv_setiv(sv, 0); | |
d58bf5aa | 916 | } |
fb73857a | 917 | break; |
79072805 | 918 | case '\024': /* ^T */ |
823a54a3 | 919 | if (nextchar == '\0') { |
88e89b8a | 920 | #ifdef BIG_TIME |
7c36658b | 921 | sv_setnv(sv, PL_basetime); |
88e89b8a | 922 | #else |
7c36658b | 923 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 924 | #endif |
7c36658b | 925 | } |
823a54a3 | 926 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
927 | sv_setiv(sv, PL_tainting |
928 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
929 | : 0); | |
7c36658b | 930 | break; |
e07ea26a | 931 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 932 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 933 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 934 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 935 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
936 | else if (strEQ(remaining, "TF8CACHE")) |
937 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
938 | break; |
939 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 940 | if (nextchar == '\0') |
4438c4b7 | 941 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 942 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 943 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 944 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
945 | } |
946 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
7e4f0450 FC |
947 | sv_setsv(sv, &PL_sv_undef); |
948 | break; | |
013b78e8 | 949 | } |
d3a7d8c7 | 950 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
951 | /* Get the bit mask for $warnings::Bits{all}, because |
952 | * it could have been extended by warnings::register */ | |
4bac9ae4 CS |
953 | HV * const bits = get_hv("warnings::Bits", 0); |
954 | SV ** const bits_all = bits ? hv_fetchs(bits, "all", FALSE) : NULL; | |
955 | if (bits_all) | |
956 | sv_copypv(sv, *bits_all); | |
957 | else | |
958 | sv_setpvn(sv, WARN_ALLstring, WARNsize); | |
ac27b0f5 | 959 | } |
4438c4b7 | 960 | else { |
72dc9ed5 NC |
961 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
962 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 963 | } |
4438c4b7 | 964 | } |
79072805 | 965 | break; |
cde0cee5 YO |
966 | case '\015': /* $^MATCH */ |
967 | if (strEQ(remaining, "ATCH")) { | |
79072805 LW |
968 | case '1': case '2': case '3': case '4': |
969 | case '5': case '6': case '7': case '8': case '9': case '&': | |
cde0cee5 YO |
970 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
971 | /* | |
159b6efe | 972 | * Pre-threads, this was paren = atoi(GvENAME((const GV *)mg->mg_obj)); |
cde0cee5 YO |
973 | * XXX Does the new way break anything? |
974 | */ | |
975 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
2fdbfb4d | 976 | CALLREG_NUMBUF_FETCH(rx,paren,sv); |
cde0cee5 YO |
977 | break; |
978 | } | |
979 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
980 | } |
981 | break; | |
982 | case '+': | |
aaa362c4 | 983 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f NC |
984 | if (RX_LASTPAREN(rx)) { |
985 | CALLREG_NUMBUF_FETCH(rx,RX_LASTPAREN(rx),sv); | |
44a2ac75 YO |
986 | break; |
987 | } | |
79072805 | 988 | } |
3280af22 | 989 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 990 | break; |
a01268b5 JH |
991 | case '\016': /* ^N */ |
992 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f NC |
993 | if (RX_LASTCLOSEPAREN(rx)) { |
994 | CALLREG_NUMBUF_FETCH(rx,RX_LASTCLOSEPAREN(rx),sv); | |
44a2ac75 YO |
995 | break; |
996 | } | |
997 | ||
a01268b5 JH |
998 | } |
999 | sv_setsv(sv,&PL_sv_undef); | |
1000 | break; | |
79072805 | 1001 | case '`': |
cde0cee5 | 1002 | do_prematch_fetch: |
aaa362c4 | 1003 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 1004 | CALLREG_NUMBUF_FETCH(rx,-2,sv); |
93b32b6d | 1005 | break; |
79072805 | 1006 | } |
3280af22 | 1007 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
1008 | break; |
1009 | case '\'': | |
cde0cee5 | 1010 | do_postmatch_fetch: |
aaa362c4 | 1011 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 1012 | CALLREG_NUMBUF_FETCH(rx,-1,sv); |
93b32b6d | 1013 | break; |
79072805 | 1014 | } |
3280af22 | 1015 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
1016 | break; |
1017 | case '.': | |
3280af22 | 1018 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 1019 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 1020 | } |
79072805 LW |
1021 | break; |
1022 | case '?': | |
809a5acc | 1023 | { |
809a5acc | 1024 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 1025 | #ifdef COMPLEX_STATUS |
41cb7b2b | 1026 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
1027 | LvTARGOFF(sv) = PL_statusvalue; |
1028 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 1029 | #endif |
809a5acc | 1030 | } |
79072805 LW |
1031 | break; |
1032 | case '^': | |
acbe1b9d | 1033 | if (GvIOp(PL_defoutgv)) |
099be4f1 | 1034 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
1035 | if (s) |
1036 | sv_setpv(sv,s); | |
1037 | else { | |
3280af22 | 1038 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 1039 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
1040 | } |
1041 | break; | |
1042 | case '~': | |
acbe1b9d | 1043 | if (GvIOp(PL_defoutgv)) |
0daa599b | 1044 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 1045 | if (!s) |
3280af22 | 1046 | s = GvENAME(PL_defoutgv); |
79072805 LW |
1047 | sv_setpv(sv,s); |
1048 | break; | |
79072805 | 1049 | case '=': |
099be4f1 | 1050 | if (GvIO(PL_defoutgv)) |
0daa599b | 1051 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
1052 | break; |
1053 | case '-': | |
099be4f1 | 1054 | if (GvIO(PL_defoutgv)) |
0daa599b | 1055 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
1056 | break; |
1057 | case '%': | |
099be4f1 | 1058 | if (GvIO(PL_defoutgv)) |
0daa599b | 1059 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 | 1060 | break; |
79072805 LW |
1061 | case ':': |
1062 | break; | |
1063 | case '/': | |
1064 | break; | |
1065 | case '[': | |
e1dccc0d | 1066 | sv_setiv(sv, 0); |
79072805 LW |
1067 | break; |
1068 | case '|': | |
099be4f1 | 1069 | if (GvIO(PL_defoutgv)) |
0daa599b | 1070 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 | 1071 | break; |
79072805 | 1072 | case '\\': |
b2ce0fda | 1073 | if (PL_ors_sv) |
f28098ff | 1074 | sv_copypv(sv, PL_ors_sv); |
4bac9ae4 CS |
1075 | else |
1076 | sv_setsv(sv, &PL_sv_undef); | |
79072805 | 1077 | break; |
0e219455 | 1078 | case '$': /* $$ */ |
9cdac2a2 FC |
1079 | { |
1080 | IV const pid = (IV)PerlProc_getpid(); | |
19db9fb7 | 1081 | if (isGV(mg->mg_obj) || SvIV(mg->mg_obj) != pid) { |
9cdac2a2 FC |
1082 | /* never set manually, or at least not since last fork */ |
1083 | sv_setiv(sv, pid); | |
19db9fb7 Z |
1084 | /* never unsafe, even if reading in a tainted expression */ |
1085 | SvTAINTED_off(sv); | |
1086 | } | |
9cdac2a2 FC |
1087 | /* else a value has been assigned manually, so do nothing */ |
1088 | } | |
0e219455 MM |
1089 | break; |
1090 | ||
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) : ""); |
4ee39169 | 1105 | RESTORE_ERRNO; |
88e89b8a | 1106 | } |
666d8aa2 | 1107 | |
ad3296c6 | 1108 | SvRTRIM(sv); |
946ec16e | 1109 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1110 | break; |
1111 | case '<': | |
985213f2 | 1112 | sv_setiv(sv, (IV)PerlProc_getuid()); |
79072805 LW |
1113 | break; |
1114 | case '>': | |
985213f2 | 1115 | sv_setiv(sv, (IV)PerlProc_geteuid()); |
79072805 LW |
1116 | break; |
1117 | case '(': | |
985213f2 | 1118 | sv_setiv(sv, (IV)PerlProc_getgid()); |
79072805 LW |
1119 | goto add_groups; |
1120 | case ')': | |
985213f2 | 1121 | sv_setiv(sv, (IV)PerlProc_getegid()); |
79072805 | 1122 | add_groups: |
79072805 | 1123 | #ifdef HAS_GETGROUPS |
79072805 | 1124 | { |
57d7c65e | 1125 | Groups_t *gary = NULL; |
fb45abb2 | 1126 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1127 | Newx(gary, num_groups, Groups_t); |
1128 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1129 | for (i = 0; i < num_groups; i++) |
1130 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1131 | Safefree(gary); |
79072805 | 1132 | } |
155aba94 | 1133 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1134 | #endif |
79072805 | 1135 | break; |
79072805 LW |
1136 | case '0': |
1137 | break; | |
1138 | } | |
a0d0e21e | 1139 | return 0; |
79072805 LW |
1140 | } |
1141 | ||
1142 | int | |
864dbfa3 | 1143 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1144 | { |
8772537c | 1145 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1146 | |
7918f24d NC |
1147 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1148 | ||
79072805 | 1149 | if (uf && uf->uf_val) |
24f81a43 | 1150 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1151 | return 0; |
1152 | } | |
1153 | ||
1154 | int | |
864dbfa3 | 1155 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1156 | { |
27da23d5 | 1157 | dVAR; |
9ae3433d | 1158 | STRLEN len = 0, klen; |
666ea192 | 1159 | const char *s = SvOK(sv) ? SvPV_const(sv,len) : ""; |
fabdb6c0 | 1160 | const char * const ptr = MgPV_const(mg,klen); |
88e89b8a | 1161 | my_setenv(ptr, s); |
1e422769 | 1162 | |
7918f24d NC |
1163 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1164 | ||
a0d0e21e LW |
1165 | #ifdef DYNAMIC_ENV_FETCH |
1166 | /* We just undefd an environment var. Is a replacement */ | |
1167 | /* waiting in the wings? */ | |
1168 | if (!len) { | |
fabdb6c0 AL |
1169 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE); |
1170 | if (valp) | |
4ab59fcc | 1171 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1172 | } |
1173 | #endif | |
1e422769 | 1174 | |
39e571d4 | 1175 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1176 | /* And you'll never guess what the dog had */ |
1177 | /* in its mouth... */ | |
3280af22 | 1178 | if (PL_tainting) { |
1e422769 | 1179 | MgTAINTEDDIR_off(mg); |
1180 | #ifdef VMS | |
5aabfad6 | 1181 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
b8ffc8df | 1182 | char pathbuf[256], eltbuf[256], *cp, *elt; |
1e422769 | 1183 | int i = 0, j = 0; |
1184 | ||
6fca0082 | 1185 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1186 | elt = eltbuf; |
1e422769 | 1187 | do { /* DCL$PATH may be a search list */ |
1188 | while (1) { /* as may dev portion of any element */ | |
1189 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1190 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1191 | cando_by_name(S_IWUSR,0,elt) ) { | |
1192 | MgTAINTEDDIR_on(mg); | |
1193 | return 0; | |
1194 | } | |
1195 | } | |
bd61b366 | 1196 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1197 | *cp = '\0'; |
1198 | if (my_trnlnm(elt, eltbuf, j++)) | |
1199 | elt = eltbuf; | |
1200 | else | |
1201 | break; | |
1202 | } | |
1203 | j = 0; | |
1204 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1205 | } | |
1206 | #endif /* VMS */ | |
5aabfad6 | 1207 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
8772537c | 1208 | const char * const strend = s + len; |
463ee0b2 LW |
1209 | |
1210 | while (s < strend) { | |
96827780 | 1211 | char tmpbuf[256]; |
c623ac67 | 1212 | Stat_t st; |
5f74f29c | 1213 | I32 i; |
f5a63d97 AL |
1214 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1215 | const char path_sep = '|'; | |
1216 | #else | |
1217 | const char path_sep = ':'; | |
1218 | #endif | |
96827780 | 1219 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1220 | s, strend, path_sep, &i); |
463ee0b2 | 1221 | s++; |
bb7a0f54 | 1222 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1223 | #ifdef VMS |
1224 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1225 | #else | |
1226 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1227 | #endif | |
c6ed36e1 | 1228 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1229 | MgTAINTEDDIR_on(mg); |
1e422769 | 1230 | return 0; |
1231 | } | |
463ee0b2 | 1232 | } |
79072805 LW |
1233 | } |
1234 | } | |
39e571d4 | 1235 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1236 | |
79072805 LW |
1237 | return 0; |
1238 | } | |
1239 | ||
1240 | int | |
864dbfa3 | 1241 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1242 | { |
7918f24d | 1243 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1244 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1245 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1246 | return 0; |
1247 | } | |
1248 | ||
88e89b8a | 1249 | int |
864dbfa3 | 1250 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1251 | { |
97aff369 | 1252 | dVAR; |
7918f24d | 1253 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1254 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1255 | #if defined(VMS) |
cea2e8a9 | 1256 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1257 | #else |
3280af22 | 1258 | if (PL_localizing) { |
fb73857a | 1259 | HE* entry; |
b0269e46 | 1260 | my_clearenv(); |
85fbaab2 NC |
1261 | hv_iterinit(MUTABLE_HV(sv)); |
1262 | while ((entry = hv_iternext(MUTABLE_HV(sv)))) { | |
fb73857a | 1263 | I32 keylen; |
1264 | my_setenv(hv_iterkey(entry, &keylen), | |
85fbaab2 | 1265 | SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry))); |
fb73857a | 1266 | } |
1267 | } | |
1268 | #endif | |
1269 | return 0; | |
1270 | } | |
1271 | ||
1272 | int | |
864dbfa3 | 1273 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1274 | { |
27da23d5 | 1275 | dVAR; |
7918f24d | 1276 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1277 | PERL_UNUSED_ARG(sv); |
1278 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1279 | #if defined(VMS) |
1280 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1281 | #else | |
1282 | my_clearenv(); | |
1283 | #endif | |
3e3baf6d | 1284 | return 0; |
66b1d557 HM |
1285 | } |
1286 | ||
64ca3a65 | 1287 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1288 | #ifdef HAS_SIGPROCMASK |
1289 | static void | |
1290 | restore_sigmask(pTHX_ SV *save_sv) | |
1291 | { | |
0bd48802 | 1292 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1293 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1294 | } |
1295 | #endif | |
66b1d557 | 1296 | int |
864dbfa3 | 1297 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1298 | { |
97aff369 | 1299 | dVAR; |
88e89b8a | 1300 | /* Are we fetching a signal entry? */ |
708854f2 | 1301 | int i = (I16)mg->mg_private; |
7918f24d NC |
1302 | |
1303 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1304 | ||
708854f2 | 1305 | if (!i) { |
84c7b88c BF |
1306 | STRLEN siglen; |
1307 | const char * sig = MgPV_const(mg, siglen); | |
1308 | mg->mg_private = i = whichsig_pvn(sig, siglen); | |
708854f2 NC |
1309 | } |
1310 | ||
e02bfb16 | 1311 | if (i > 0) { |
22c35a8c GS |
1312 | if(PL_psig_ptr[i]) |
1313 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1314 | else { |
46da273f | 1315 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1316 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1317 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1318 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1319 | #endif |
1320 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1321 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1322 | sigstate = SIG_DFL; | |
85b332e2 | 1323 | #endif |
88e89b8a | 1324 | /* cache state so we don't fetch it again */ |
8aad04aa | 1325 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1326 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1327 | else |
3280af22 | 1328 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1329 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1330 | SvTEMP_off(sv); |
1331 | } | |
1332 | } | |
1333 | return 0; | |
1334 | } | |
1335 | int | |
864dbfa3 | 1336 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1337 | { |
7918f24d | 1338 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
179c85a2 | 1339 | |
38a124f0 | 1340 | magic_setsig(NULL, mg); |
179c85a2 | 1341 | return sv_unmagic(sv, mg->mg_type); |
88e89b8a | 1342 | } |
3d37d572 | 1343 | |
0a8e0eff | 1344 | Signal_t |
8aad04aa | 1345 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1346 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1347 | #else |
0a8e0eff | 1348 | Perl_csighandler(int sig) |
8aad04aa | 1349 | #endif |
0a8e0eff | 1350 | { |
1018e26f NIS |
1351 | #ifdef PERL_GET_SIG_CONTEXT |
1352 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1353 | #else | |
85b332e2 CL |
1354 | dTHX; |
1355 | #endif | |
23ada85b | 1356 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1357 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1358 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1359 | #endif |
2e34cc90 | 1360 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1361 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1362 | #ifdef KILL_BY_SIGPRC |
1363 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1364 | #else | |
1365 | exit(1); | |
1366 | #endif | |
1367 | #endif | |
406878dd | 1368 | if ( |
853d2c32 RGS |
1369 | #ifdef SIGILL |
1370 | sig == SIGILL || | |
1371 | #endif | |
1372 | #ifdef SIGBUS | |
1373 | sig == SIGBUS || | |
1374 | #endif | |
1375 | #ifdef SIGSEGV | |
1376 | sig == SIGSEGV || | |
1377 | #endif | |
1378 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 | 1379 | /* Call the perl level handler now-- |
31c91b43 | 1380 | * with risk we may be in malloc() or being destructed etc. */ |
6e324d09 | 1381 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1382 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1383 | #else |
1384 | (*PL_sighandlerp)(sig); | |
92807b6d | 1385 | #endif |
406878dd | 1386 | else { |
31c91b43 | 1387 | if (!PL_psig_pend) return; |
406878dd GA |
1388 | /* Set a flag to say this signal is pending, that is awaiting delivery after |
1389 | * the current Perl opcode completes */ | |
1390 | PL_psig_pend[sig]++; | |
1391 | ||
1392 | #ifndef SIG_PENDING_DIE_COUNT | |
1393 | # define SIG_PENDING_DIE_COUNT 120 | |
1394 | #endif | |
fe13d51d | 1395 | /* Add one to say _a_ signal is pending */ |
406878dd GA |
1396 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1397 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1398 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
1399 | } | |
0a8e0eff NIS |
1400 | } |
1401 | ||
2e34cc90 CL |
1402 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1403 | void | |
1404 | Perl_csighandler_init(void) | |
1405 | { | |
1406 | int sig; | |
27da23d5 | 1407 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1408 | |
1409 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1410 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1411 | dTHX; |
27da23d5 | 1412 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1413 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1414 | #endif |
1415 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1416 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1417 | #endif |
1418 | } | |
27da23d5 | 1419 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1420 | } |
1421 | #endif | |
1422 | ||
7fe50b8b LT |
1423 | #if defined HAS_SIGPROCMASK |
1424 | static void | |
1425 | unblock_sigmask(pTHX_ void* newset) | |
1426 | { | |
1427 | sigprocmask(SIG_UNBLOCK, (sigset_t*)newset, NULL); | |
1428 | } | |
1429 | #endif | |
1430 | ||
0a8e0eff NIS |
1431 | void |
1432 | Perl_despatch_signals(pTHX) | |
1433 | { | |
97aff369 | 1434 | dVAR; |
0a8e0eff NIS |
1435 | int sig; |
1436 | PL_sig_pending = 0; | |
1437 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1438 | if (PL_psig_pend[sig]) { | |
d0166017 | 1439 | dSAVE_ERRNO; |
7fe50b8b | 1440 | #ifdef HAS_SIGPROCMASK |
55534442 LT |
1441 | /* From sigaction(2) (FreeBSD man page): |
1442 | * | Signal routines normally execute with the signal that | |
1443 | * | caused their invocation blocked, but other signals may | |
1444 | * | yet occur. | |
1445 | * Emulation of this behavior (from within Perl) is enabled | |
1446 | * using sigprocmask | |
1447 | */ | |
1448 | int was_blocked; | |
1449 | sigset_t newset, oldset; | |
1450 | ||
1451 | sigemptyset(&newset); | |
1452 | sigaddset(&newset, sig); | |
1453 | sigprocmask(SIG_BLOCK, &newset, &oldset); | |
1454 | was_blocked = sigismember(&oldset, sig); | |
7fe50b8b LT |
1455 | if (!was_blocked) { |
1456 | SV* save_sv = newSVpvn((char *)(&newset), sizeof(sigset_t)); | |
1457 | ENTER; | |
1458 | SAVEFREESV(save_sv); | |
1459 | SAVEDESTRUCTOR_X(unblock_sigmask, SvPV_nolen(save_sv)); | |
1460 | } | |
55534442 | 1461 | #endif |
25da4428 | 1462 | PL_psig_pend[sig] = 0; |
6e324d09 | 1463 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1464 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1465 | #else |
1466 | (*PL_sighandlerp)(sig); | |
92807b6d | 1467 | #endif |
7fe50b8b | 1468 | #ifdef HAS_SIGPROCMASK |
55534442 | 1469 | if (!was_blocked) |
7fe50b8b | 1470 | LEAVE; |
55534442 | 1471 | #endif |
d0166017 | 1472 | RESTORE_ERRNO; |
0a8e0eff NIS |
1473 | } |
1474 | } | |
1475 | } | |
1476 | ||
38a124f0 | 1477 | /* sv of NULL signifies that we're acting as magic_clearsig. */ |
85e6fe83 | 1478 | int |
864dbfa3 | 1479 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1480 | { |
27da23d5 | 1481 | dVAR; |
79072805 | 1482 | I32 i; |
cbbf8932 | 1483 | SV** svp = NULL; |
2d4fcd5e AJ |
1484 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1485 | * effects (due to closures). We must make sure that the new disposition | |
1486 | * is in place before it is called. | |
1487 | */ | |
cbbf8932 | 1488 | SV* to_dec = NULL; |
e72dc28c | 1489 | STRLEN len; |
2d4fcd5e AJ |
1490 | #ifdef HAS_SIGPROCMASK |
1491 | sigset_t set, save; | |
1492 | SV* save_sv; | |
1493 | #endif | |
d5263905 | 1494 | register const char *s = MgPV_const(mg,len); |
7918f24d NC |
1495 | |
1496 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1497 | ||
748a9306 | 1498 | if (*s == '_') { |
84c7b88c | 1499 | if (memEQs(s, len, "__DIE__")) |
3280af22 | 1500 | svp = &PL_diehook; |
84c7b88c | 1501 | else if (memEQs(s, len, "__WARN__") |
38a124f0 NC |
1502 | && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) { |
1503 | /* Merge the existing behaviours, which are as follows: | |
1504 | magic_setsig, we always set svp to &PL_warnhook | |
1505 | (hence we always change the warnings handler) | |
1506 | For magic_clearsig, we don't change the warnings handler if it's | |
1507 | set to the &PL_warnhook. */ | |
3280af22 | 1508 | svp = &PL_warnhook; |
84c7b88c BF |
1509 | } else if (sv) { |
1510 | SV *tmp = sv_newmortal(); | |
1511 | Perl_croak(aTHX_ "No such hook: %s", | |
1512 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1513 | } | |
748a9306 | 1514 | i = 0; |
38a124f0 | 1515 | if (svp && *svp) { |
9289f461 RGS |
1516 | if (*svp != PERL_WARNHOOK_FATAL) |
1517 | to_dec = *svp; | |
cbbf8932 | 1518 | *svp = NULL; |
4633a7c4 | 1519 | } |
748a9306 LW |
1520 | } |
1521 | else { | |
708854f2 NC |
1522 | i = (I16)mg->mg_private; |
1523 | if (!i) { | |
84c7b88c | 1524 | i = whichsig_pvn(s, len); /* ...no, a brick */ |
58a26b12 | 1525 | mg->mg_private = (U16)i; |
708854f2 | 1526 | } |
86d86cad | 1527 | if (i <= 0) { |
84c7b88c BF |
1528 | if (sv) { |
1529 | SV *tmp = sv_newmortal(); | |
1530 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", | |
1531 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1532 | } | |
748a9306 LW |
1533 | return 0; |
1534 | } | |
2d4fcd5e AJ |
1535 | #ifdef HAS_SIGPROCMASK |
1536 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1537 | sigemptyset(&set); | |
1538 | sigaddset(&set,i); | |
1539 | sigprocmask(SIG_BLOCK, &set, &save); | |
1540 | ENTER; | |
9ff8e806 | 1541 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1542 | SAVEFREESV(save_sv); |
1543 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1544 | #endif | |
1545 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1546 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1547 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1548 | #endif |
23ada85b | 1549 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1550 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1551 | #endif |
2e34cc90 | 1552 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1553 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1554 | #endif |
2d4fcd5e | 1555 | to_dec = PL_psig_ptr[i]; |
38a124f0 NC |
1556 | if (sv) { |
1557 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); | |
1558 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ | |
79fd3822 NC |
1559 | |
1560 | /* Signals don't change name during the program's execution, so once | |
1561 | they're cached in the appropriate slot of PL_psig_name, they can | |
1562 | stay there. | |
1563 | ||
1564 | Ideally we'd find some way of making SVs at (C) compile time, or | |
1565 | at least, doing most of the work. */ | |
1566 | if (!PL_psig_name[i]) { | |
1567 | PL_psig_name[i] = newSVpvn(s, len); | |
1568 | SvREADONLY_on(PL_psig_name[i]); | |
1569 | } | |
38a124f0 | 1570 | } else { |
79fd3822 | 1571 | SvREFCNT_dec(PL_psig_name[i]); |
38a124f0 NC |
1572 | PL_psig_name[i] = NULL; |
1573 | PL_psig_ptr[i] = NULL; | |
1574 | } | |
748a9306 | 1575 | } |
38a124f0 | 1576 | if (sv && (isGV_with_GP(sv) || SvROK(sv))) { |
2d4fcd5e | 1577 | if (i) { |
5c1546dc | 1578 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1579 | } |
748a9306 | 1580 | else |
b37c2d43 | 1581 | *svp = SvREFCNT_inc_simple_NN(sv); |
38a124f0 | 1582 | } else { |
9dfa190b NC |
1583 | if (sv && SvOK(sv)) { |
1584 | s = SvPV_force(sv, len); | |
1585 | } else { | |
1586 | sv = NULL; | |
1587 | } | |
84c7b88c | 1588 | if (sv && memEQs(s, len,"IGNORE")) { |
9dfa190b | 1589 | if (i) { |
23ada85b | 1590 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
9dfa190b NC |
1591 | PL_sig_ignoring[i] = 1; |
1592 | (void)rsignal(i, PL_csighandlerp); | |
85b332e2 | 1593 | #else |
9dfa190b | 1594 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1595 | #endif |
9dfa190b | 1596 | } |
2d4fcd5e | 1597 | } |
84c7b88c | 1598 | else if (!sv || memEQs(s, len,"DEFAULT") || !len) { |
9dfa190b | 1599 | if (i) { |
2e34cc90 | 1600 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
9dfa190b NC |
1601 | PL_sig_defaulting[i] = 1; |
1602 | (void)rsignal(i, PL_csighandlerp); | |
2e34cc90 | 1603 | #else |
9dfa190b | 1604 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1605 | #endif |
9dfa190b NC |
1606 | } |
1607 | } | |
1608 | else { | |
1609 | /* | |
1610 | * We should warn if HINT_STRICT_REFS, but without | |
1611 | * access to a known hint bit in a known OP, we can't | |
1612 | * tell whether HINT_STRICT_REFS is in force or not. | |
1613 | */ | |
1614 | if (!strchr(s,':') && !strchr(s,'\'')) | |
1615 | Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"), | |
1616 | SV_GMAGIC); | |
1617 | if (i) | |
1618 | (void)rsignal(i, PL_csighandlerp); | |
1619 | else | |
1620 | *svp = SvREFCNT_inc_simple_NN(sv); | |
136e0459 | 1621 | } |
748a9306 | 1622 | } |
9dfa190b | 1623 | |
2d4fcd5e AJ |
1624 | #ifdef HAS_SIGPROCMASK |
1625 | if(i) | |
1626 | LEAVE; | |
1627 | #endif | |
ef8d46e8 | 1628 | SvREFCNT_dec(to_dec); |
79072805 LW |
1629 | return 0; |
1630 | } | |
64ca3a65 | 1631 | #endif /* !PERL_MICRO */ |
79072805 LW |
1632 | |
1633 | int | |
864dbfa3 | 1634 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1635 | { |
97aff369 | 1636 | dVAR; |
7918f24d | 1637 | PERL_ARGS_ASSERT_MAGIC_SETISA; |
8772537c | 1638 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1639 | |
89c14e2e | 1640 | /* Skip _isaelem because _isa will handle it shortly */ |
354b0578 | 1641 | if (PL_delaymagic & DM_ARRAY_ISA && mg->mg_type == PERL_MAGIC_isaelem) |
89c14e2e BB |
1642 | return 0; |
1643 | ||
0e446081 | 1644 | return magic_clearisa(NULL, mg); |
463ee0b2 LW |
1645 | } |
1646 | ||
0e446081 | 1647 | /* sv of NULL signifies that we're acting as magic_setisa. */ |
463ee0b2 | 1648 | int |
52b45067 RD |
1649 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1650 | { | |
1651 | dVAR; | |
1652 | HV* stash; | |
1653 | ||
7918f24d NC |
1654 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1655 | ||
52b45067 | 1656 | /* Bail out if destruction is going on */ |
627364f1 | 1657 | if(PL_phase == PERL_PHASE_DESTRUCT) return 0; |
52b45067 | 1658 | |
0e446081 NC |
1659 | if (sv) |
1660 | av_clear(MUTABLE_AV(sv)); | |
52b45067 | 1661 | |
6624142a FC |
1662 | if (SvTYPE(mg->mg_obj) != SVt_PVGV && SvSMAGICAL(mg->mg_obj)) |
1663 | /* This occurs with setisa_elem magic, which calls this | |
1664 | same function. */ | |
1665 | mg = mg_find(mg->mg_obj, PERL_MAGIC_isa); | |
1666 | ||
1667 | if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */ | |
1668 | SV **svp = AvARRAY((AV *)mg->mg_obj); | |
1669 | I32 items = AvFILLp((AV *)mg->mg_obj) + 1; | |
1670 | while (items--) { | |
1671 | stash = GvSTASH((GV *)*svp++); | |
1672 | if (stash && HvENAME(stash)) mro_isa_changed_in(stash); | |
1673 | } | |
1674 | ||
1675 | return 0; | |
1676 | } | |
1677 | ||
52b45067 | 1678 | stash = GvSTASH( |
6624142a | 1679 | (const GV *)mg->mg_obj |
52b45067 RD |
1680 | ); |
1681 | ||
00169e2c FC |
1682 | /* The stash may have been detached from the symbol table, so check its |
1683 | name before doing anything. */ | |
1684 | if (stash && HvENAME_get(stash)) | |
5562fa71 | 1685 | mro_isa_changed_in(stash); |
52b45067 RD |
1686 | |
1687 | return 0; | |
1688 | } | |
1689 | ||
1690 | int | |
864dbfa3 | 1691 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1692 | { |
85fbaab2 | 1693 | HV * const hv = MUTABLE_HV(LvTARG(sv)); |
6ff81951 | 1694 | I32 i = 0; |
7918f24d NC |
1695 | |
1696 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1697 | PERL_UNUSED_ARG(mg); |
7719e241 | 1698 | |
6ff81951 | 1699 | if (hv) { |
497b47a8 | 1700 | (void) hv_iterinit(hv); |
ad64d0ec | 1701 | if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
1b95d04f | 1702 | i = HvUSEDKEYS(hv); |
497b47a8 JH |
1703 | else { |
1704 | while (hv_iternext(hv)) | |
1705 | i++; | |
1706 | } | |
6ff81951 GS |
1707 | } |
1708 | ||
1709 | sv_setiv(sv, (IV)i); | |
1710 | return 0; | |
1711 | } | |
1712 | ||
1713 | int | |
864dbfa3 | 1714 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1715 | { |
7918f24d | 1716 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1717 | PERL_UNUSED_ARG(mg); |
946ec16e | 1718 | if (LvTARG(sv)) { |
85fbaab2 | 1719 | hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv)); |
946ec16e | 1720 | } |
1721 | return 0; | |
ac27b0f5 | 1722 | } |
946ec16e | 1723 | |
efaf3674 DM |
1724 | /* |
1725 | =for apidoc magic_methcall | |
1726 | ||
1727 | Invoke a magic method (like FETCH). | |
1728 | ||
2baee27b FC |
1729 | C<sv> and C<mg> are the tied thingy and the tie magic. |
1730 | ||
1731 | C<meth> is the name of the method to call. | |
1732 | ||
1733 | C<argc> is the number of args (in addition to $self) to pass to the method. | |
1734 | ||
1735 | The C<flags> can be: | |
1736 | ||
1737 | G_DISCARD invoke method with G_DISCARD flag and don't | |
1738 | return a value | |
1739 | G_UNDEF_FILL fill the stack with argc pointers to | |
1740 | PL_sv_undef | |
1741 | ||
1742 | The arguments themselves are any values following the C<flags> argument. | |
efaf3674 DM |
1743 | |
1744 | Returns the SV (if any) returned by the method, or NULL on failure. | |
1745 | ||
1746 | ||
1747 | =cut | |
1748 | */ | |
1749 | ||
1750 | SV* | |
c7a0c747 | 1751 | Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
046b0c7d | 1752 | U32 argc, ...) |
a0d0e21e | 1753 | { |
97aff369 | 1754 | dVAR; |
a0d0e21e | 1755 | dSP; |
efaf3674 | 1756 | SV* ret = NULL; |
463ee0b2 | 1757 | |
7918f24d NC |
1758 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1759 | ||
efaf3674 | 1760 | ENTER; |
d1d7a15d NC |
1761 | |
1762 | if (flags & G_WRITING_TO_STDERR) { | |
1763 | SAVETMPS; | |
1764 | ||
1765 | save_re_context(); | |
1766 | SAVESPTR(PL_stderrgv); | |
1767 | PL_stderrgv = NULL; | |
1768 | } | |
1769 | ||
efaf3674 | 1770 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1771 | PUSHMARK(SP); |
efaf3674 | 1772 | |
67549bd2 NC |
1773 | EXTEND(SP, argc+1); |
1774 | PUSHs(SvTIED_obj(sv, mg)); | |
1775 | if (flags & G_UNDEF_FILL) { | |
1776 | while (argc--) { | |
efaf3674 | 1777 | PUSHs(&PL_sv_undef); |
93965878 | 1778 | } |
67549bd2 | 1779 | } else if (argc > 0) { |
046b0c7d NC |
1780 | va_list args; |
1781 | va_start(args, argc); | |
1782 | ||
1783 | do { | |
1784 | SV *const sv = va_arg(args, SV *); | |
1785 | PUSHs(sv); | |
1786 | } while (--argc); | |
1787 | ||
1788 | va_end(args); | |
88e89b8a | 1789 | } |
463ee0b2 | 1790 | PUTBACK; |
efaf3674 DM |
1791 | if (flags & G_DISCARD) { |
1792 | call_method(meth, G_SCALAR|G_DISCARD); | |
1793 | } | |
1794 | else { | |
1795 | if (call_method(meth, G_SCALAR)) | |
1796 | ret = *PL_stack_sp--; | |
1797 | } | |
1798 | POPSTACK; | |
d1d7a15d NC |
1799 | if (flags & G_WRITING_TO_STDERR) |
1800 | FREETMPS; | |
efaf3674 DM |
1801 | LEAVE; |
1802 | return ret; | |
1803 | } | |
1804 | ||
1805 | ||
1806 | /* wrapper for magic_methcall that creates the first arg */ | |
463ee0b2 | 1807 | |
efaf3674 | 1808 | STATIC SV* |
c7a0c747 | 1809 | S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
efaf3674 DM |
1810 | int n, SV *val) |
1811 | { | |
1812 | dVAR; | |
1813 | SV* arg1 = NULL; | |
1814 | ||
1815 | PERL_ARGS_ASSERT_MAGIC_METHCALL1; | |
1816 | ||
1817 | if (mg->mg_ptr) { | |
1818 | if (mg->mg_len >= 0) { | |
db4b3a1d | 1819 | arg1 = newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
efaf3674 DM |
1820 | } |
1821 | else if (mg->mg_len == HEf_SVKEY) | |
1822 | arg1 = MUTABLE_SV(mg->mg_ptr); | |
1823 | } | |
1824 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { | |
db4b3a1d | 1825 | arg1 = newSViv((IV)(mg->mg_len)); |
efaf3674 DM |
1826 | sv_2mortal(arg1); |
1827 | } | |
1828 | if (!arg1) { | |
046b0c7d | 1829 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n - 1, val); |
efaf3674 | 1830 | } |
046b0c7d | 1831 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n, arg1, val); |
946ec16e | 1832 | } |
1833 | ||
76e3520e | 1834 | STATIC int |
e1ec3a88 | 1835 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1836 | { |
efaf3674 DM |
1837 | dVAR; |
1838 | SV* ret; | |
463ee0b2 | 1839 | |
7918f24d NC |
1840 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1841 | ||
efaf3674 DM |
1842 | ret = magic_methcall1(sv, mg, meth, 0, 1, NULL); |
1843 | if (ret) | |
1844 | sv_setsv(sv, ret); | |
a0d0e21e LW |
1845 | return 0; |
1846 | } | |
463ee0b2 | 1847 | |
a0d0e21e | 1848 | int |
864dbfa3 | 1849 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1850 | { |
7918f24d NC |
1851 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1852 | ||
fd69380d | 1853 | if (mg->mg_type == PERL_MAGIC_tiedelem) |
a0d0e21e | 1854 | mg->mg_flags |= MGf_GSKIP; |
58f82c5c | 1855 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1856 | return 0; |
1857 | } | |
1858 | ||
1859 | int | |
864dbfa3 | 1860 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1861 | { |
efaf3674 | 1862 | dVAR; |
b112cff9 DM |
1863 | MAGIC *tmg; |
1864 | SV *val; | |
7918f24d NC |
1865 | |
1866 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1867 | ||
b112cff9 DM |
1868 | /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to |
1869 | * STORE() is not $val, but rather a PVLV (the sv in this call), whose | |
1870 | * public flags indicate its value based on copying from $val. Doing | |
1871 | * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us. | |
1872 | * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes | |
1873 | * wrong if $val happened to be tainted, as sv hasn't got magic | |
1874 | * enabled, even though taint magic is in the chain. In which case, | |
1875 | * fake up a temporary tainted value (this is easier than temporarily | |
1876 | * re-enabling magic on sv). */ | |
1877 | ||
1878 | if (PL_tainting && (tmg = mg_find(sv, PERL_MAGIC_taint)) | |
1879 | && (tmg->mg_len & 1)) | |
1880 | { | |
1881 | val = sv_mortalcopy(sv); | |
1882 | SvTAINTED_on(val); | |
1883 | } | |
1884 | else | |
1885 | val = sv; | |
1886 | ||
efaf3674 | 1887 | magic_methcall1(sv, mg, "STORE", G_DISCARD, 2, val); |
463ee0b2 LW |
1888 | return 0; |
1889 | } | |
1890 | ||
1891 | int | |
864dbfa3 | 1892 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1893 | { |
7918f24d NC |
1894 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1895 | ||
4c13be3f | 1896 | if (mg->mg_type == PERL_MAGIC_tiedscalar) return 0; |
a0d0e21e LW |
1897 | return magic_methpack(sv,mg,"DELETE"); |
1898 | } | |
463ee0b2 | 1899 | |
93965878 NIS |
1900 | |
1901 | U32 | |
864dbfa3 | 1902 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1903 | { |
efaf3674 | 1904 | dVAR; |
22846ab4 | 1905 | I32 retval = 0; |
efaf3674 | 1906 | SV* retsv; |
93965878 | 1907 | |
7918f24d NC |
1908 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1909 | ||
efaf3674 DM |
1910 | retsv = magic_methcall1(sv, mg, "FETCHSIZE", 0, 1, NULL); |
1911 | if (retsv) { | |
1912 | retval = SvIV(retsv)-1; | |
22846ab4 AB |
1913 | if (retval < -1) |
1914 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1915 | } |
22846ab4 | 1916 | return (U32) retval; |
93965878 NIS |
1917 | } |
1918 | ||
cea2e8a9 GS |
1919 | int |
1920 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1921 | { |
efaf3674 | 1922 | dVAR; |
463ee0b2 | 1923 | |
7918f24d NC |
1924 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1925 | ||
046b0c7d | 1926 | Perl_magic_methcall(aTHX_ sv, mg, "CLEAR", G_DISCARD, 0); |
463ee0b2 LW |
1927 | return 0; |
1928 | } | |
1929 | ||
1930 | int | |
864dbfa3 | 1931 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1932 | { |
efaf3674 DM |
1933 | dVAR; |
1934 | SV* ret; | |
463ee0b2 | 1935 | |
7918f24d NC |
1936 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1937 | ||
046b0c7d NC |
1938 | ret = SvOK(key) ? Perl_magic_methcall(aTHX_ sv, mg, "NEXTKEY", 0, 1, key) |
1939 | : Perl_magic_methcall(aTHX_ sv, mg, "FIRSTKEY", 0, 0); | |
efaf3674 DM |
1940 | if (ret) |
1941 | sv_setsv(key,ret); | |
79072805 LW |
1942 | return 0; |
1943 | } | |
1944 | ||
1945 | int | |
1146e912 | 1946 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1947 | { |
7918f24d NC |
1948 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1949 | ||
a0d0e21e | 1950 | return magic_methpack(sv,mg,"EXISTS"); |
ac27b0f5 | 1951 | } |
a0d0e21e | 1952 | |
a3bcc51e TP |
1953 | SV * |
1954 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1955 | { | |
efaf3674 | 1956 | dVAR; |
5fcbf73d | 1957 | SV *retval; |
ad64d0ec NC |
1958 | SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg); |
1959 | HV * const pkg = SvSTASH((const SV *)SvRV(tied)); | |
a3bcc51e | 1960 | |
7918f24d NC |
1961 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
1962 | ||
a3bcc51e TP |
1963 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1964 | SV *key; | |
bfcb3514 | 1965 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1966 | /* we are in an iteration so the hash cannot be empty */ |
1967 | return &PL_sv_yes; | |
1968 | /* no xhv_eiter so now use FIRSTKEY */ | |
1969 | key = sv_newmortal(); | |
ad64d0ec | 1970 | magic_nextpack(MUTABLE_SV(hv), mg, key); |
bfcb3514 | 1971 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1972 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1973 | } | |
1974 | ||
1975 | /* there is a SCALAR method that we can call */ | |
046b0c7d | 1976 | retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(hv), mg, "SCALAR", 0, 0); |
efaf3674 | 1977 | if (!retval) |
5fcbf73d | 1978 | retval = &PL_sv_undef; |
a3bcc51e TP |
1979 | return retval; |
1980 | } | |
1981 | ||
a0d0e21e | 1982 | int |
864dbfa3 | 1983 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1984 | { |
97aff369 | 1985 | dVAR; |
8772537c AL |
1986 | GV * const gv = PL_DBline; |
1987 | const I32 i = SvTRUE(sv); | |
1988 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 1989 | atoi(MgPV_nolen_const(mg)), FALSE); |
7918f24d NC |
1990 | |
1991 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
1992 | ||
8772537c AL |
1993 | if (svp && SvIOKp(*svp)) { |
1994 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
1995 | if (o) { | |
1996 | /* set or clear breakpoint in the relevant control op */ | |
1997 | if (i) | |
1998 | o->op_flags |= OPf_SPECIAL; | |
1999 | else | |
2000 | o->op_flags &= ~OPf_SPECIAL; | |
2001 | } | |
5df8de69 | 2002 | } |
79072805 LW |
2003 | return 0; |
2004 | } | |
2005 | ||
2006 | int | |
8772537c | 2007 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 2008 | { |
97aff369 | 2009 | dVAR; |
502c6561 | 2010 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2011 | |
2012 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
2013 | ||
83bf042f | 2014 | if (obj) { |
e1dccc0d | 2015 | sv_setiv(sv, AvFILL(obj)); |
83bf042f NC |
2016 | } else { |
2017 | SvOK_off(sv); | |
2018 | } | |
79072805 LW |
2019 | return 0; |
2020 | } | |
2021 | ||
2022 | int | |
864dbfa3 | 2023 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2024 | { |
97aff369 | 2025 | dVAR; |
502c6561 | 2026 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2027 | |
2028 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
2029 | ||
83bf042f | 2030 | if (obj) { |
e1dccc0d | 2031 | av_fill(obj, SvIV(sv)); |
83bf042f | 2032 | } else { |
a2a5de95 NC |
2033 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
2034 | "Attempt to set length of freed array"); | |
83bf042f NC |
2035 | } |
2036 | return 0; | |
2037 | } | |
2038 | ||
2039 | int | |
83f29afa VP |
2040 | Perl_magic_cleararylen_p(pTHX_ SV *sv, MAGIC *mg) |
2041 | { | |
2042 | dVAR; | |
2043 | ||
2044 | PERL_ARGS_ASSERT_MAGIC_CLEARARYLEN_P; | |
2045 | PERL_UNUSED_ARG(sv); | |
2046 | ||
2047 | /* Reset the iterator when the array is cleared */ | |
3565fbf3 VP |
2048 | #if IVSIZE == I32SIZE |
2049 | *((IV *) &(mg->mg_len)) = 0; | |
2050 | #else | |
83f29afa VP |
2051 | if (mg->mg_ptr) |
2052 | *((IV *) mg->mg_ptr) = 0; | |
3565fbf3 | 2053 | #endif |
83f29afa VP |
2054 | |
2055 | return 0; | |
2056 | } | |
2057 | ||
2058 | int | |
83bf042f NC |
2059 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) |
2060 | { | |
97aff369 | 2061 | dVAR; |
7918f24d NC |
2062 | |
2063 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; | |
53c1dcc0 | 2064 | PERL_UNUSED_ARG(sv); |
7918f24d | 2065 | |
94f3782b DM |
2066 | /* during global destruction, mg_obj may already have been freed */ |
2067 | if (PL_in_clean_all) | |
1ea47f64 | 2068 | return 0; |
94f3782b | 2069 | |
83bf042f NC |
2070 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
2071 | ||
2072 | if (mg) { | |
2073 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
2074 | reference. Hence the we (the array) are about to go away with it | |
2075 | still pointing at us. Clear its pointer, else it would be pointing | |
2076 | at free memory. See the comment in sv_magic about reference loops, | |
2077 | and why it can't own a reference to us. */ | |
2078 | mg->mg_obj = 0; | |
2079 | } | |
a0d0e21e LW |
2080 | return 0; |
2081 | } | |
2082 | ||
2083 | int | |
864dbfa3 | 2084 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2085 | { |
97aff369 | 2086 | dVAR; |
16eb5365 | 2087 | SV* const lsv = LvTARG(sv); |
7918f24d NC |
2088 | |
2089 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
16eb5365 | 2090 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2091 | |
a0d0e21e | 2092 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
2093 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
2094 | if (found && found->mg_len >= 0) { | |
2095 | I32 i = found->mg_len; | |
7e2040f0 | 2096 | if (DO_UTF8(lsv)) |
a0ed51b3 | 2097 | sv_pos_b2u(lsv, &i); |
e1dccc0d | 2098 | sv_setiv(sv, i); |
a0d0e21e LW |
2099 | return 0; |
2100 | } | |
2101 | } | |
0c34ef67 | 2102 | SvOK_off(sv); |
a0d0e21e LW |
2103 | return 0; |
2104 | } | |
2105 | ||
2106 | int | |
864dbfa3 | 2107 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2108 | { |
97aff369 | 2109 | dVAR; |
16eb5365 | 2110 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
2111 | SSize_t pos; |
2112 | STRLEN len; | |
c00206c8 | 2113 | STRLEN ulen = 0; |
53d44271 | 2114 | MAGIC* found; |
a0d0e21e | 2115 | |
7918f24d | 2116 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
16eb5365 | 2117 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2118 | |
a0d0e21e | 2119 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
2120 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
2121 | else | |
2122 | found = NULL; | |
2123 | if (!found) { | |
a0d0e21e LW |
2124 | if (!SvOK(sv)) |
2125 | return 0; | |
d83f0a82 NC |
2126 | #ifdef PERL_OLD_COPY_ON_WRITE |
2127 | if (SvIsCOW(lsv)) | |
2128 | sv_force_normal_flags(lsv, 0); | |
2129 | #endif | |
3881461a | 2130 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 2131 | NULL, 0); |
a0d0e21e LW |
2132 | } |
2133 | else if (!SvOK(sv)) { | |
3881461a | 2134 | found->mg_len = -1; |
a0d0e21e LW |
2135 | return 0; |
2136 | } | |
4bac9ae4 | 2137 | len = SvPOK_nog(lsv) ? SvCUR(lsv) : sv_len(lsv); |
a0d0e21e | 2138 | |
e1dccc0d | 2139 | pos = SvIV(sv); |
a0ed51b3 | 2140 | |
7e2040f0 | 2141 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
2142 | ulen = sv_len_utf8(lsv); |
2143 | if (ulen) | |
2144 | len = ulen; | |
a0ed51b3 LW |
2145 | } |
2146 | ||
a0d0e21e LW |
2147 | if (pos < 0) { |
2148 | pos += len; | |
2149 | if (pos < 0) | |
2150 | pos = 0; | |
2151 | } | |
eb160463 | 2152 | else if (pos > (SSize_t)len) |
a0d0e21e | 2153 | pos = len; |
a0ed51b3 LW |
2154 | |
2155 | if (ulen) { | |
2156 | I32 p = pos; | |
2157 | sv_pos_u2b(lsv, &p, 0); | |
2158 | pos = p; | |
2159 | } | |
727405f8 | 2160 | |
3881461a AL |
2161 | found->mg_len = pos; |
2162 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 2163 | |
79072805 LW |
2164 | return 0; |
2165 | } | |
2166 | ||
2167 | int | |
864dbfa3 | 2168 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2169 | { |
2170 | STRLEN len; | |
35a4481c | 2171 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2172 | const char * const tmps = SvPV_const(lsv,len); |
777f7c56 EB |
2173 | STRLEN offs = LvTARGOFF(sv); |
2174 | STRLEN rem = LvTARGLEN(sv); | |
83f78d1a FC |
2175 | const bool negoff = LvFLAGS(sv) & 1; |
2176 | const bool negrem = LvFLAGS(sv) & 2; | |
7918f24d NC |
2177 | |
2178 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2179 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2180 | |
83f78d1a FC |
2181 | if (!translate_substr_offsets( |
2182 | SvUTF8(lsv) ? sv_len_utf8(lsv) : len, | |
2183 | negoff ? -(IV)offs : (IV)offs, !negoff, | |
2184 | negrem ? -(IV)rem : (IV)rem, !negrem, &offs, &rem | |
2185 | )) { | |
2186 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string"); | |
2187 | sv_setsv_nomg(sv, &PL_sv_undef); | |
2188 | return 0; | |
2189 | } | |
2190 | ||
9aa983d2 | 2191 | if (SvUTF8(lsv)) |
d931b1be | 2192 | offs = sv_pos_u2b_flags(lsv, offs, &rem, SV_CONST_RETURN); |
1c900557 | 2193 | sv_setpvn(sv, tmps + offs, rem); |
9aa983d2 | 2194 | if (SvUTF8(lsv)) |
2ef4b674 | 2195 | SvUTF8_on(sv); |
6ff81951 GS |
2196 | return 0; |
2197 | } | |
2198 | ||
2199 | int | |
864dbfa3 | 2200 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2201 | { |
97aff369 | 2202 | dVAR; |
83f78d1a | 2203 | STRLEN len, lsv_len, oldtarglen, newtarglen; |
5fcbf73d | 2204 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2205 | SV * const lsv = LvTARG(sv); |
777f7c56 EB |
2206 | STRLEN lvoff = LvTARGOFF(sv); |
2207 | STRLEN lvlen = LvTARGLEN(sv); | |
83f78d1a FC |
2208 | const bool negoff = LvFLAGS(sv) & 1; |
2209 | const bool neglen = LvFLAGS(sv) & 2; | |
7918f24d NC |
2210 | |
2211 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2212 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2213 | |
a74fb2cd FC |
2214 | SvGETMAGIC(lsv); |
2215 | if (SvROK(lsv)) | |
2216 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), | |
2217 | "Attempt to use reference as lvalue in substr" | |
2218 | ); | |
83f78d1a FC |
2219 | if (SvUTF8(lsv)) lsv_len = sv_len_utf8(lsv); |
2220 | else (void)SvPV_nomg(lsv,lsv_len); | |
2221 | if (!translate_substr_offsets( | |
2222 | lsv_len, | |
2223 | negoff ? -(IV)lvoff : (IV)lvoff, !negoff, | |
2224 | neglen ? -(IV)lvlen : (IV)lvlen, !neglen, &lvoff, &lvlen | |
2225 | )) | |
2226 | Perl_croak(aTHX_ "substr outside of string"); | |
2227 | oldtarglen = lvlen; | |
1aa99e6b | 2228 | if (DO_UTF8(sv)) { |
9aa983d2 | 2229 | sv_utf8_upgrade(lsv); |
d931b1be | 2230 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
a74fb2cd | 2231 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2232 | newtarglen = sv_len_utf8(sv); |
9aa983d2 JH |
2233 | SvUTF8_on(lsv); |
2234 | } | |
9bf12eaf | 2235 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 2236 | const char *utf8; |
d931b1be | 2237 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
83f78d1a | 2238 | newtarglen = len; |
5fcbf73d | 2239 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
a74fb2cd | 2240 | sv_insert_flags(lsv, lvoff, lvlen, utf8, len, 0); |
5fcbf73d | 2241 | Safefree(utf8); |
1aa99e6b | 2242 | } |
b76f3ce2 | 2243 | else { |
a74fb2cd | 2244 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2245 | newtarglen = len; |
b76f3ce2 | 2246 | } |
83f78d1a FC |
2247 | if (!neglen) LvTARGLEN(sv) = newtarglen; |
2248 | if (negoff) LvTARGOFF(sv) += newtarglen - oldtarglen; | |
b76f3ce2 | 2249 | |
79072805 LW |
2250 | return 0; |
2251 | } | |
2252 | ||
2253 | int | |
864dbfa3 | 2254 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2255 | { |
97aff369 | 2256 | dVAR; |
7918f24d NC |
2257 | |
2258 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; | |
8772537c | 2259 | PERL_UNUSED_ARG(sv); |
7918f24d | 2260 | |
27cc343c | 2261 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2262 | return 0; |
2263 | } | |
2264 | ||
2265 | int | |
864dbfa3 | 2266 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2267 | { |
97aff369 | 2268 | dVAR; |
7918f24d NC |
2269 | |
2270 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; | |
8772537c | 2271 | PERL_UNUSED_ARG(sv); |
7918f24d | 2272 | |
b01e650a DM |
2273 | /* update taint status */ |
2274 | if (PL_tainted) | |
2275 | mg->mg_len |= 1; | |
2276 | else | |
2277 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2278 | return 0; |
2279 | } | |
2280 | ||
2281 | int | |
864dbfa3 | 2282 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2283 | { |
35a4481c | 2284 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2285 | |
2286 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2287 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2288 | |
6136c704 AL |
2289 | if (lsv) |
2290 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2291 | else | |
0c34ef67 | 2292 | SvOK_off(sv); |
6ff81951 | 2293 | |
6ff81951 GS |
2294 | return 0; |
2295 | } | |
2296 | ||
2297 | int | |
864dbfa3 | 2298 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2299 | { |
7918f24d | 2300 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2301 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2302 | do_vecset(sv); /* XXX slurp this routine */ |
2303 | return 0; | |
2304 | } | |
2305 | ||
2306 | int | |
1e6bda93 FC |
2307 | Perl_magic_setvstring(pTHX_ SV *sv, MAGIC *mg) |
2308 | { | |
2309 | PERL_ARGS_ASSERT_MAGIC_SETVSTRING; | |
2310 | ||
2311 | if (SvPOKp(sv)) { | |
2312 | SV * const vecsv = sv_newmortal(); | |
2313 | scan_vstring(mg->mg_ptr, mg->mg_ptr + mg->mg_len, vecsv); | |
2314 | if (sv_eq_flags(vecsv, sv, 0 /*nomg*/)) return 0; | |
2315 | } | |
2316 | return sv_unmagic(sv, mg->mg_type); | |
2317 | } | |
2318 | ||
2319 | int | |
864dbfa3 | 2320 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 2321 | { |
97aff369 | 2322 | dVAR; |
a0714e2c | 2323 | SV *targ = NULL; |
7918f24d NC |
2324 | |
2325 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2326 | ||
5f05dabc | 2327 | if (LvTARGLEN(sv)) { |
68dc0745 | 2328 | if (mg->mg_obj) { |
8772537c | 2329 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2330 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0); |
6d822dc4 MS |
2331 | if (he) |
2332 | targ = HeVAL(he); | |
68dc0745 | 2333 | } |
2334 | else { | |
502c6561 | 2335 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
68dc0745 | 2336 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2337 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2338 | } | |
46da273f | 2339 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2340 | /* somebody else defined it for us */ |
2341 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2342 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2343 | LvTARGLEN(sv) = 0; |
2344 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2345 | mg->mg_obj = NULL; |
68dc0745 | 2346 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2347 | } | |
5f05dabc | 2348 | } |
71be2cbc | 2349 | else |
2350 | targ = LvTARG(sv); | |
3280af22 | 2351 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 2352 | return 0; |
2353 | } | |
2354 | ||
2355 | int | |
864dbfa3 | 2356 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2357 | { |
7918f24d | 2358 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2359 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2360 | if (LvTARGLEN(sv)) |
68dc0745 | 2361 | vivify_defelem(sv); |
2362 | if (LvTARG(sv)) { | |
5f05dabc | 2363 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2364 | SvSETMAGIC(LvTARG(sv)); |
2365 | } | |
5f05dabc | 2366 | return 0; |
2367 | } | |
2368 | ||
71be2cbc | 2369 | void |
864dbfa3 | 2370 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2371 | { |
97aff369 | 2372 | dVAR; |
74e13ce4 | 2373 | MAGIC *mg; |
a0714e2c | 2374 | SV *value = NULL; |
71be2cbc | 2375 | |
7918f24d NC |
2376 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2377 | ||
14befaf4 | 2378 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2379 | return; |
68dc0745 | 2380 | if (mg->mg_obj) { |
8772537c | 2381 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2382 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0); |
6d822dc4 MS |
2383 | if (he) |
2384 | value = HeVAL(he); | |
3280af22 | 2385 | if (!value || value == &PL_sv_undef) |
be2597df | 2386 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2387 | } |
68dc0745 | 2388 | else { |
502c6561 | 2389 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
5aabfad6 | 2390 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2391 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2392 | else { |
d4c19fe8 | 2393 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2394 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2395 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2396 | } |
2397 | } | |
b37c2d43 | 2398 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2399 | SvREFCNT_dec(LvTARG(sv)); |
2400 | LvTARG(sv) = value; | |
71be2cbc | 2401 | LvTARGLEN(sv) = 0; |
68dc0745 | 2402 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2403 | mg->mg_obj = NULL; |
68dc0745 | 2404 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2405 | } |
2406 | ||
2407 | int | |
864dbfa3 | 2408 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2409 | { |
7918f24d | 2410 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
5648c0ae DM |
2411 | Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj)); |
2412 | return 0; | |
810b8aa5 GS |
2413 | } |
2414 | ||
2415 | int | |
864dbfa3 | 2416 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2417 | { |
7918f24d | 2418 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2419 | PERL_UNUSED_CONTEXT; |
0177730e | 2420 | PERL_UNUSED_ARG(sv); |
565764a8 | 2421 | mg->mg_len = -1; |
93a17b20 LW |
2422 | return 0; |
2423 | } | |
2424 | ||
2425 | int | |
864dbfa3 | 2426 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2427 | { |
35a4481c | 2428 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2429 | |
7918f24d NC |
2430 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2431 | ||
79072805 | 2432 | if (uf && uf->uf_set) |
24f81a43 | 2433 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2434 | return 0; |
2435 | } | |
2436 | ||
c277df42 | 2437 | int |
faf82a0b AE |
2438 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2439 | { | |
488344d2 | 2440 | const char type = mg->mg_type; |
7918f24d NC |
2441 | |
2442 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2443 | ||
488344d2 NC |
2444 | if (type == PERL_MAGIC_qr) { |
2445 | } else if (type == PERL_MAGIC_bm) { | |
2446 | SvTAIL_off(sv); | |
2447 | SvVALID_off(sv); | |
2448 | } else { | |
2449 | assert(type == PERL_MAGIC_fm); | |
488344d2 NC |
2450 | } |
2451 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2452 | } |
2453 | ||
7a4c00b4 | 2454 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2455 | int |
864dbfa3 | 2456 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2457 | { |
7918f24d NC |
2458 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2459 | ||
bbce6d69 | 2460 | /* |
838b5b74 | 2461 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2462 | * and vanished with a faint plop. |
2463 | */ | |
96a5add6 | 2464 | PERL_UNUSED_CONTEXT; |
8772537c | 2465 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2466 | if (mg->mg_ptr) { |
2467 | Safefree(mg->mg_ptr); | |
2468 | mg->mg_ptr = NULL; | |
565764a8 | 2469 | mg->mg_len = -1; |
7a4c00b4 | 2470 | } |
bbce6d69 | 2471 | return 0; |
2472 | } | |
7a4c00b4 | 2473 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2474 | |
7e8c5dac HS |
2475 | /* Just clear the UTF-8 cache data. */ |
2476 | int | |
2477 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2478 | { | |
7918f24d | 2479 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2480 | PERL_UNUSED_CONTEXT; |
8772537c | 2481 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2482 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2483 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2484 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2485 | return 0; | |
2486 | } | |
2487 | ||
bbce6d69 | 2488 | int |
864dbfa3 | 2489 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2490 | { |
97aff369 | 2491 | dVAR; |
e1ec3a88 | 2492 | register const char *s; |
2fdbfb4d AB |
2493 | register I32 paren; |
2494 | register const REGEXP * rx; | |
2495 | const char * const remaining = mg->mg_ptr + 1; | |
79072805 | 2496 | I32 i; |
8990e307 | 2497 | STRLEN len; |
125b9982 | 2498 | MAGIC *tmg; |
2fdbfb4d | 2499 | |
7918f24d NC |
2500 | PERL_ARGS_ASSERT_MAGIC_SET; |
2501 | ||
79072805 | 2502 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
2503 | case '\015': /* $^MATCH */ |
2504 | if (strEQ(remaining, "ATCH")) | |
2505 | goto do_match; | |
2506 | case '`': /* ${^PREMATCH} caught below */ | |
2507 | do_prematch: | |
f1b875a0 | 2508 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
2509 | goto setparen; |
2510 | case '\'': /* ${^POSTMATCH} caught below */ | |
2511 | do_postmatch: | |
f1b875a0 | 2512 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
2513 | goto setparen; |
2514 | case '&': | |
2515 | do_match: | |
f1b875a0 | 2516 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d AB |
2517 | goto setparen; |
2518 | case '1': case '2': case '3': case '4': | |
2519 | case '5': case '6': case '7': case '8': case '9': | |
104a8018 | 2520 | paren = atoi(mg->mg_ptr); |
2fdbfb4d | 2521 | setparen: |
1e05feb3 | 2522 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9bad346 | 2523 | setparen_got_rx: |
2fdbfb4d | 2524 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
1e05feb3 | 2525 | } else { |
2fdbfb4d AB |
2526 | /* Croak with a READONLY error when a numbered match var is |
2527 | * set without a previous pattern match. Unless it's C<local $1> | |
2528 | */ | |
d9bad346 | 2529 | croakparen: |
2fdbfb4d | 2530 | if (!PL_localizing) { |
6ad8f254 | 2531 | Perl_croak_no_modify(aTHX); |
2fdbfb4d AB |
2532 | } |
2533 | } | |
9b9e0be4 | 2534 | break; |
748a9306 | 2535 | case '\001': /* ^A */ |
3280af22 | 2536 | sv_setsv(PL_bodytarget, sv); |
64eff8b7 DM |
2537 | FmLINES(PL_bodytarget) = 0; |
2538 | if (SvPOK(PL_bodytarget)) { | |
2539 | char *s = SvPVX(PL_bodytarget); | |
2540 | while ( ((s = strchr(s, '\n'))) ) { | |
2541 | FmLINES(PL_bodytarget)++; | |
2542 | s++; | |
2543 | } | |
2544 | } | |
125b9982 NT |
2545 | /* mg_set() has temporarily made sv non-magical */ |
2546 | if (PL_tainting) { | |
2547 | if ((tmg = mg_find(sv,PERL_MAGIC_taint)) && tmg->mg_len & 1) | |
2548 | SvTAINTED_on(PL_bodytarget); | |
2549 | else | |
2550 | SvTAINTED_off(PL_bodytarget); | |
2551 | } | |
748a9306 | 2552 | break; |
49460fe6 | 2553 | case '\003': /* ^C */ |
f2338a2e | 2554 | PL_minus_c = cBOOL(SvIV(sv)); |
49460fe6 NIS |
2555 | break; |
2556 | ||
79072805 | 2557 | case '\004': /* ^D */ |
b4ab917c | 2558 | #ifdef DEBUGGING |
b83604b4 | 2559 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2560 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
a58fb6f9 CS |
2561 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
2562 | dump_all_perl(!DEBUG_B_TEST); | |
b4ab917c | 2563 | #else |
38ab35f8 | 2564 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2565 | #endif |
79072805 | 2566 | break; |
28f23441 | 2567 | case '\005': /* ^E */ |
d0063567 | 2568 | if (*(mg->mg_ptr+1) == '\0') { |
e37778c2 | 2569 | #ifdef VMS |
38ab35f8 | 2570 | set_vaxc_errno(SvIV(sv)); |
e37778c2 NC |
2571 | #else |
2572 | # ifdef WIN32 | |
d0063567 | 2573 | SetLastError( SvIV(sv) ); |
e37778c2 NC |
2574 | # else |
2575 | # ifdef OS2 | |
38ab35f8 | 2576 | os2_setsyserrno(SvIV(sv)); |
e37778c2 | 2577 | # else |
d0063567 | 2578 | /* will anyone ever use this? */ |
38ab35f8 | 2579 | SETERRNO(SvIV(sv), 4); |
048c1ddf IZ |
2580 | # endif |
2581 | # endif | |
22fae026 | 2582 | #endif |
d0063567 DK |
2583 | } |
2584 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
ef8d46e8 | 2585 | SvREFCNT_dec(PL_encoding); |
d0063567 DK |
2586 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2587 | PL_encoding = newSVsv(sv); | |
2588 | } | |
2589 | else { | |
a0714e2c | 2590 | PL_encoding = NULL; |
d0063567 DK |
2591 | } |
2592 | } | |
2593 | break; | |
79072805 | 2594 | case '\006': /* ^F */ |
38ab35f8 | 2595 | PL_maxsysfd = SvIV(sv); |
79072805 | 2596 | break; |
a0d0e21e | 2597 | case '\010': /* ^H */ |
38ab35f8 | 2598 | PL_hints = SvIV(sv); |
a0d0e21e | 2599 | break; |
9d116dd7 | 2600 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2601 | Safefree(PL_inplace); |
bd61b366 | 2602 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2603 | break; |
d9bad346 FC |
2604 | case '\016': /* ^N */ |
2605 | if (PL_curpm && (rx = PM_GETRE(PL_curpm)) | |
2606 | && (paren = RX_LASTCLOSEPAREN(rx))) goto setparen_got_rx; | |
2607 | goto croakparen; | |
28f23441 | 2608 | case '\017': /* ^O */ |
ac27b0f5 | 2609 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2610 | Safefree(PL_osname); |
bd61b366 | 2611 | PL_osname = NULL; |
3511154c DM |
2612 | if (SvOK(sv)) { |
2613 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2614 | PL_osname = savesvpv(sv); |
3511154c | 2615 | } |
ac27b0f5 NIS |
2616 | } |
2617 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2618 | STRLEN len; |
2619 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2620 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 | 2621 | SV *tmp; |
8b850bd5 NC |
2622 | |
2623 | ||
2624 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
f747ebd6 | 2625 | PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; |
8b850bd5 NC |
2626 | |
2627 | /* Opening for input is more common than opening for output, so | |
2628 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 | 2629 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
f747ebd6 Z |
2630 | SvUTF8(sv)) |
2631 | : newSVpvs_flags("", SvUTF8(sv)); | |
2632 | (void)hv_stores(GvHV(PL_hintgv), "open>", tmp); | |
2633 | mg_set(tmp); | |
8b850bd5 | 2634 | |
f747ebd6 Z |
2635 | tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len, |
2636 | SvUTF8(sv)); | |
2637 | (void)hv_stores(GvHV(PL_hintgv), "open<", tmp); | |
2638 | mg_set(tmp); | |
ac27b0f5 | 2639 | } |
28f23441 | 2640 | break; |
79072805 | 2641 | case '\020': /* ^P */ |
2fdbfb4d AB |
2642 | if (*remaining == '\0') { /* ^P */ |
2643 | PL_perldb = SvIV(sv); | |
2644 | if (PL_perldb && !PL_DBsingle) | |
2645 | init_debugger(); | |
2646 | break; | |
2647 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2648 | goto do_prematch; | |
2649 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
2650 | goto do_postmatch; | |
2651 | } | |
9b9e0be4 | 2652 | break; |
79072805 | 2653 | case '\024': /* ^T */ |
88e89b8a | 2654 | #ifdef BIG_TIME |
6b88bc9c | 2655 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2656 | #else |
38ab35f8 | 2657 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2658 | #endif |
79072805 | 2659 | break; |
e07ea26a NC |
2660 | case '\025': /* ^UTF8CACHE */ |
2661 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2662 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2663 | } | |
2664 | break; | |
fde18df1 | 2665 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2666 | if (*(mg->mg_ptr+1) == '\0') { |
2667 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2668 | i = SvIV(sv); |
ac27b0f5 | 2669 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2670 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2671 | } |
599cee73 | 2672 | } |
0a378802 | 2673 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2674 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
7e4f0450 FC |
2675 | if (!SvPOK(sv)) { |
2676 | PL_compiling.cop_warnings = pWARN_STD; | |
d775746e GS |
2677 | break; |
2678 | } | |
f4fc7782 | 2679 | { |
b5477537 | 2680 | STRLEN len, i; |
d3a7d8c7 | 2681 | int accumulate = 0 ; |
f4fc7782 | 2682 | int any_fatals = 0 ; |
b83604b4 | 2683 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2684 | for (i = 0 ; i < len ; ++i) { |
2685 | accumulate |= ptr[i] ; | |
2686 | any_fatals |= (ptr[i] & 0xAA) ; | |
2687 | } | |
4243c432 NC |
2688 | if (!accumulate) { |
2689 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2690 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2691 | PL_compiling.cop_warnings = pWARN_NONE; | |
2692 | } | |
72dc9ed5 NC |
2693 | /* Yuck. I can't see how to abstract this: */ |
2694 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2695 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2696 | if (!specialWARN(PL_compiling.cop_warnings)) |
2697 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2698 | PL_compiling.cop_warnings = pWARN_ALL; |
2699 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2700 | } |
d3a7d8c7 | 2701 | else { |
72dc9ed5 NC |
2702 | STRLEN len; |
2703 | const char *const p = SvPV_const(sv, len); | |
2704 | ||
2705 | PL_compiling.cop_warnings | |
8ee4cf24 | 2706 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2707 | p, len); |
2708 | ||
d3a7d8c7 GS |
2709 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2710 | PL_dowarn |= G_WARN_ONCE ; | |
2711 | } | |
f4fc7782 | 2712 | |
d3a7d8c7 | 2713 | } |
4438c4b7 | 2714 | } |
971a9dd3 | 2715 | } |
79072805 LW |
2716 | break; |
2717 | case '.': | |
3280af22 NIS |
2718 | if (PL_localizing) { |
2719 | if (PL_localizing == 1) | |
7766f137 | 2720 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2721 | } |
3280af22 | 2722 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2723 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2724 | break; |
2725 | case '^': | |
acbe1b9d FC |
2726 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2727 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2728 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2729 | break; |
2730 | case '~': | |
acbe1b9d FC |
2731 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2732 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2733 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2734 | break; |
2735 | case '=': | |
acbe1b9d | 2736 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2737 | break; |
2738 | case '-': | |
acbe1b9d FC |
2739 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
2740 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
099be4f1 | 2741 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 LW |
2742 | break; |
2743 | case '%': | |
acbe1b9d | 2744 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2745 | break; |
2746 | case '|': | |
4b65379b | 2747 | { |
099be4f1 | 2748 | IO * const io = GvIO(PL_defoutgv); |
720f287d AB |
2749 | if(!io) |
2750 | break; | |
38ab35f8 | 2751 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2752 | IoFLAGS(io) &= ~IOf_FLUSH; |
2753 | else { | |
2754 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2755 | PerlIO *ofp = IoOFP(io); | |
2756 | if (ofp) | |
2757 | (void)PerlIO_flush(ofp); | |
2758 | IoFLAGS(io) |= IOf_FLUSH; | |
2759 | } | |
2760 | } | |
79072805 LW |
2761 | } |
2762 | break; | |
79072805 | 2763 | case '/': |
3280af22 | 2764 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2765 | PL_rs = newSVsv(sv); |
79072805 LW |
2766 | break; |
2767 | case '\\': | |
ef8d46e8 | 2768 | SvREFCNT_dec(PL_ors_sv); |
6bc2995b | 2769 | if (SvOK(sv)) { |
7889fe52 | 2770 | PL_ors_sv = newSVsv(sv); |
009c130f | 2771 | } |
e3c19b7b | 2772 | else { |
a0714e2c | 2773 | PL_ors_sv = NULL; |
e3c19b7b | 2774 | } |
79072805 | 2775 | break; |
7d69d4a6 FC |
2776 | case '[': |
2777 | if (SvIV(sv) != 0) | |
2778 | Perl_croak(aTHX_ "Assigning non-zero to $[ is no longer possible"); | |
2779 | break; | |
79072805 | 2780 | case '?': |
ff0cee69 | 2781 | #ifdef COMPLEX_STATUS |
6b88bc9c | 2782 | if (PL_localizing == 2) { |
41cb7b2b | 2783 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
2784 | PL_statusvalue = LvTARGOFF(sv); |
2785 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2786 | } |
2787 | else | |
2788 | #endif | |
2789 | #ifdef VMSISH_STATUS | |
2790 | if (VMSISH_STATUS) | |
fb38d079 | 2791 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2792 | else |
2793 | #endif | |
38ab35f8 | 2794 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2795 | break; |
2796 | case '!': | |
93189314 JH |
2797 | { |
2798 | #ifdef VMS | |
2799 | # define PERL_VMS_BANG vaxc$errno | |
2800 | #else | |
2801 | # define PERL_VMS_BANG 0 | |
2802 | #endif | |
91487cfc | 2803 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2804 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2805 | } | |
79072805 LW |
2806 | break; |
2807 | case '<': | |
985213f2 AB |
2808 | { |
2809 | const IV new_uid = SvIV(sv); | |
2810 | PL_delaymagic_uid = new_uid; | |
3280af22 NIS |
2811 | if (PL_delaymagic) { |
2812 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2813 | break; /* don't do magic till later */ |
2814 | } | |
2815 | #ifdef HAS_SETRUID | |
985213f2 | 2816 | (void)setruid((Uid_t)new_uid); |
79072805 LW |
2817 | #else |
2818 | #ifdef HAS_SETREUID | |
985213f2 | 2819 | (void)setreuid((Uid_t)new_uid, (Uid_t)-1); |
748a9306 | 2820 | #else |
85e6fe83 | 2821 | #ifdef HAS_SETRESUID |
985213f2 | 2822 | (void)setresuid((Uid_t)new_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2823 | #else |
985213f2 | 2824 | if (new_uid == PerlProc_geteuid()) { /* special case $< = $> */ |
75870ed3 | 2825 | #ifdef PERL_DARWIN |
2826 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
985213f2 | 2827 | if (new_uid != 0 && PerlProc_getuid() == 0) |
75870ed3 | 2828 | (void)PerlProc_setuid(0); |
2829 | #endif | |
985213f2 | 2830 | (void)PerlProc_setuid(new_uid); |
75870ed3 | 2831 | } else { |
cea2e8a9 | 2832 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2833 | } |
79072805 LW |
2834 | #endif |
2835 | #endif | |
85e6fe83 | 2836 | #endif |
79072805 | 2837 | break; |
985213f2 | 2838 | } |
79072805 | 2839 | case '>': |
985213f2 AB |
2840 | { |
2841 | const UV new_euid = SvIV(sv); | |
2842 | PL_delaymagic_euid = new_euid; | |
3280af22 NIS |
2843 | if (PL_delaymagic) { |
2844 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2845 | break; /* don't do magic till later */ |
2846 | } | |
2847 | #ifdef HAS_SETEUID | |
985213f2 | 2848 | (void)seteuid((Uid_t)new_euid); |
79072805 LW |
2849 | #else |
2850 | #ifdef HAS_SETREUID | |
985213f2 | 2851 | (void)setreuid((Uid_t)-1, (Uid_t)new_euid); |
85e6fe83 LW |
2852 | #else |
2853 | #ifdef HAS_SETRESUID | |
985213f2 | 2854 | (void)setresuid((Uid_t)-1, (Uid_t)new_euid, (Uid_t)-1); |
79072805 | 2855 | #else |
985213f2 | 2856 | if (new_euid == PerlProc_getuid()) /* special case $> = $< */ |
382669a9 | 2857 | PerlProc_setuid(new_euid); |
a0d0e21e | 2858 | else { |
cea2e8a9 | 2859 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2860 | } |
79072805 LW |
2861 | #endif |
2862 | #endif | |
85e6fe83 | 2863 | #endif |
79072805 | 2864 | break; |
985213f2 | 2865 | } |
79072805 | 2866 | case '(': |
985213f2 AB |
2867 | { |
2868 | const UV new_gid = SvIV(sv); | |
2869 | PL_delaymagic_gid = new_gid; | |
3280af22 NIS |
2870 | if (PL_delaymagic) { |
2871 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2872 | break; /* don't do magic till later */ |
2873 | } | |
2874 | #ifdef HAS_SETRGID | |
985213f2 | 2875 | (void)setrgid((Gid_t)new_gid); |
79072805 LW |
2876 | #else |
2877 | #ifdef HAS_SETREGID | |
985213f2 | 2878 | (void)setregid((Gid_t)new_gid, (Gid_t)-1); |
85e6fe83 LW |
2879 | #else |
2880 | #ifdef HAS_SETRESGID | |
985213f2 | 2881 | (void)setresgid((Gid_t)new_gid, (Gid_t)-1, (Gid_t) -1); |
79072805 | 2882 | #else |
985213f2 AB |
2883 | if (new_gid == PerlProc_getegid()) /* special case $( = $) */ |
2884 | (void)PerlProc_setgid(new_gid); | |
748a9306 | 2885 | else { |
cea2e8a9 | 2886 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2887 | } |
79072805 LW |
2888 | #endif |
2889 | #endif | |
85e6fe83 | 2890 | #endif |
79072805 | 2891 | break; |
985213f2 | 2892 | } |
79072805 | 2893 | case ')': |
985213f2 AB |
2894 | { |
2895 | UV new_egid; | |
5cd24f17 | 2896 | #ifdef HAS_SETGROUPS |
2897 | { | |
b83604b4 | 2898 | const char *p = SvPV_const(sv, len); |
757f63d8 | 2899 | Groups_t *gary = NULL; |
fb4089e0 | 2900 | #ifdef _SC_NGROUPS_MAX |
2901 | int maxgrp = sysconf(_SC_NGROUPS_MAX); | |
2902 | ||
2903 | if (maxgrp < 0) | |
2904 | maxgrp = NGROUPS; | |
2905 | #else | |
2906 | int maxgrp = NGROUPS; | |
2907 | #endif | |
757f63d8 SP |
2908 | |
2909 | while (isSPACE(*p)) | |
2910 | ++p; | |
985213f2 | 2911 | new_egid = Atol(p); |
fb4089e0 | 2912 | for (i = 0; i < maxgrp; ++i) { |
757f63d8 SP |
2913 | while (*p && !isSPACE(*p)) |
2914 | ++p; | |
2915 | while (isSPACE(*p)) | |
2916 | ++p; | |
2917 | if (!*p) | |
2918 | break; | |
2919 | if(!gary) | |
2920 | Newx(gary, i + 1, Groups_t); | |
2921 | else | |
2922 | Renew(gary, i + 1, Groups_t); | |
2923 | gary[i] = Atol(p); | |
2924 | } | |
2925 | if (i) | |
2926 | (void)setgroups(i, gary); | |
f5a63d97 | 2927 | Safefree(gary); |
5cd24f17 | 2928 | } |
2929 | #else /* HAS_SETGROUPS */ | |
985213f2 | 2930 | new_egid = SvIV(sv); |
5cd24f17 | 2931 | #endif /* HAS_SETGROUPS */ |
985213f2 | 2932 | PL_delaymagic_egid = new_egid; |
3280af22 NIS |
2933 | if (PL_delaymagic) { |
2934 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2935 | break; /* don't do magic till later */ |
2936 | } | |
2937 | #ifdef HAS_SETEGID | |
985213f2 | 2938 | (void)setegid((Gid_t)new_egid); |
79072805 LW |
2939 | #else |
2940 | #ifdef HAS_SETREGID | |
985213f2 | 2941 | (void)setregid((Gid_t)-1, (Gid_t)new_egid); |
85e6fe83 LW |
2942 | #else |
2943 | #ifdef HAS_SETRESGID | |
985213f2 | 2944 | (void)setresgid((Gid_t)-1, (Gid_t)new_egid, (Gid_t)-1); |
79072805 | 2945 | #else |
985213f2 AB |
2946 | if (new_egid == PerlProc_getgid()) /* special case $) = $( */ |
2947 | (void)PerlProc_setgid(new_egid); | |
748a9306 | 2948 | else { |
cea2e8a9 | 2949 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2950 | } |
79072805 LW |
2951 | #endif |
2952 | #endif | |
85e6fe83 | 2953 | #endif |
79072805 | 2954 | break; |
985213f2 | 2955 | } |
79072805 | 2956 | case ':': |
2d8e6c8d | 2957 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2958 | break; |
9cdac2a2 FC |
2959 | case '$': /* $$ */ |
2960 | /* Store the pid in mg->mg_obj so we can tell when a fork has | |
2961 | occurred. mg->mg_obj points to *$ by default, so clear it. */ | |
2962 | if (isGV(mg->mg_obj)) { | |
2963 | if (mg->mg_flags & MGf_REFCOUNTED) /* probably never true */ | |
2964 | SvREFCNT_dec(mg->mg_obj); | |
2965 | mg->mg_flags |= MGf_REFCOUNTED; | |
2966 | mg->mg_obj = newSViv((IV)PerlProc_getpid()); | |
2967 | } | |
2968 | else sv_setiv(mg->mg_obj, (IV)PerlProc_getpid()); | |
2969 | break; | |
79072805 | 2970 | case '0': |
e2975953 | 2971 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2972 | #ifdef HAS_SETPROCTITLE |
2973 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2974 | * show a string from the process struct and provide | |
2975 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2976 | if (PL_origalen != 1) { |
b83604b4 | 2977 | s = SvPV_const(sv, len); |
98b76f99 | 2978 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2979 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2980 | * but not the "(perl) suffix from the ps(1) |
2981 | * output, because that's what ps(1) shows if the | |
2982 | * argv[] is modified. */ | |
6f2ad931 | 2983 | setproctitle("-%s", s); |
9aad2c0e | 2984 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2985 | /* This doesn't really work if you assume that |
2986 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2987 | * because in ps(1) output the result will be like | |
2988 | * sprintf("perl: %s (perl)", s) | |
2989 | * I guess this is a security feature: | |
2990 | * one (a user process) cannot get rid of the original name. | |
2991 | * --jhi */ | |
2992 | setproctitle("%s", s); | |
2993 | # endif | |
2994 | } | |
9d3968b2 | 2995 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2996 | if (PL_origalen != 1) { |
17aa7f3d | 2997 | union pstun un; |
b83604b4 | 2998 | s = SvPV_const(sv, len); |
6867be6d | 2999 | un.pst_command = (char *)s; |
17aa7f3d JH |
3000 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
3001 | } | |
9d3968b2 | 3002 | #else |
2d2af554 GA |
3003 | if (PL_origalen > 1) { |
3004 | /* PL_origalen is set in perl_parse(). */ | |
3005 | s = SvPV_force(sv,len); | |
3006 | if (len >= (STRLEN)PL_origalen-1) { | |
3007 | /* Longer than original, will be truncated. We assume that | |
3008 | * PL_origalen bytes are available. */ | |
3009 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
3010 | } | |
3011 | else { | |
3012 | /* Shorter than original, will be padded. */ | |
235ac35d | 3013 | #ifdef PERL_DARWIN |
60777a0d JH |
3014 | /* Special case for Mac OS X: see [perl #38868] */ |
3015 | const int pad = 0; | |
235ac35d | 3016 | #else |
8a89a4f1 MB |
3017 | /* Is the space counterintuitive? Yes. |
3018 | * (You were expecting \0?) | |
3019 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
3020 | * --jhi */ | |
60777a0d | 3021 | const int pad = ' '; |
235ac35d | 3022 | #endif |
60777a0d JH |
3023 | Copy(s, PL_origargv[0], len, char); |
3024 | PL_origargv[0][len] = 0; | |
3025 | memset(PL_origargv[0] + len + 1, | |
3026 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
3027 | } |
3028 | PL_origargv[0][PL_origalen-1] = 0; | |
3029 | for (i = 1; i < PL_origargc; i++) | |
3030 | PL_origargv[i] = 0; | |
7636ea95 AB |
3031 | #ifdef HAS_PRCTL_SET_NAME |
3032 | /* Set the legacy process name in addition to the POSIX name on Linux */ | |
3033 | if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) { | |
3034 | /* diag_listed_as: SKIPME */ | |
3035 | Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno)); | |
3036 | } | |
3037 | #endif | |
79072805 | 3038 | } |
9d3968b2 | 3039 | #endif |
e2975953 | 3040 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 LW |
3041 | break; |
3042 | } | |
3043 | return 0; | |
3044 | } | |
3045 | ||
3046 | I32 | |
84c7b88c BF |
3047 | Perl_whichsig_sv(pTHX_ SV *sigsv) |
3048 | { | |
3049 | const char *sigpv; | |
3050 | STRLEN siglen; | |
3051 | PERL_ARGS_ASSERT_WHICHSIG_SV; | |
3052 | PERL_UNUSED_CONTEXT; | |
3053 | sigpv = SvPV_const(sigsv, siglen); | |
3054 | return whichsig_pvn(sigpv, siglen); | |
3055 | } | |
3056 | ||
3057 | I32 | |
3058 | Perl_whichsig_pv(pTHX_ const char *sig) | |
3059 | { | |
3060 | PERL_ARGS_ASSERT_WHICHSIG_PV; | |
3061 | PERL_UNUSED_CONTEXT; | |
3062 | return whichsig_pvn(sig, strlen(sig)); | |
3063 | } | |
3064 | ||
3065 | I32 | |
3066 | Perl_whichsig_pvn(pTHX_ const char *sig, STRLEN len) | |
79072805 | 3067 | { |
aadb217d | 3068 | register char* const* sigv; |
7918f24d | 3069 | |
84c7b88c | 3070 | PERL_ARGS_ASSERT_WHICHSIG_PVN; |
96a5add6 | 3071 | PERL_UNUSED_CONTEXT; |
79072805 | 3072 | |
aadb217d | 3073 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
84c7b88c | 3074 | if (strlen(*sigv) == len && memEQ(sig,*sigv, len)) |
aadb217d | 3075 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 | 3076 | #ifdef SIGCLD |
84c7b88c | 3077 | if (memEQs(sig, len, "CHLD")) |
79072805 LW |
3078 | return SIGCLD; |
3079 | #endif | |
3080 | #ifdef SIGCHLD | |
84c7b88c | 3081 | if (memEQs(sig, len, "CLD")) |
79072805 LW |
3082 | return SIGCHLD; |
3083 | #endif | |
7f1236c0 | 3084 | return -1; |
79072805 LW |
3085 | } |
3086 | ||
ecfc5424 | 3087 | Signal_t |
1e82f5a6 | 3088 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3089 | Perl_sighandler(int sig, siginfo_t *sip, void *uap) |
1e82f5a6 SH |
3090 | #else |
3091 | Perl_sighandler(int sig) | |
3092 | #endif | |
79072805 | 3093 | { |
1018e26f NIS |
3094 | #ifdef PERL_GET_SIG_CONTEXT |
3095 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 3096 | #else |
cea2e8a9 | 3097 | dTHX; |
71d280e3 | 3098 | #endif |
79072805 | 3099 | dSP; |
a0714e2c SS |
3100 | GV *gv = NULL; |
3101 | SV *sv = NULL; | |
8772537c | 3102 | SV * const tSv = PL_Sv; |
601f1833 | 3103 | CV *cv = NULL; |
533c011a | 3104 | OP *myop = PL_op; |
84902520 | 3105 | U32 flags = 0; |
8772537c | 3106 | XPV * const tXpv = PL_Xpv; |
0c4d3b5e | 3107 | I32 old_ss_ix = PL_savestack_ix; |
100c03aa | 3108 | SV *errsv_save = NULL; |
71d280e3 | 3109 | |
84902520 | 3110 | |
727405f8 | 3111 | if (!PL_psig_ptr[sig]) { |
99ef548b | 3112 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
3113 | PL_sig_name[sig]); |
3114 | exit(sig); | |
3115 | } | |
ff0cee69 | 3116 | |
a0d63a7b DM |
3117 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3118 | /* Max number of items pushed there is 3*n or 4. We cannot fix | |
3119 | infinity, so we fix 4 (in fact 5): */ | |
3120 | if (PL_savestack_ix + 15 <= PL_savestack_max) { | |
3121 | flags |= 1; | |
3122 | PL_savestack_ix += 5; /* Protect save in progress. */ | |
3123 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, NULL); | |
3124 | } | |
84902520 | 3125 | } |
84902520 | 3126 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ea726b52 | 3127 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig]))) |
8772537c AL |
3128 | || SvTYPE(cv) != SVt_PVCV) { |
3129 | HV *st; | |
f2c0649b | 3130 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 3131 | } |
84902520 | 3132 | |
a0d0e21e | 3133 | if (!cv || !CvROOT(cv)) { |
a2a5de95 NC |
3134 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
3135 | PL_sig_name[sig], (gv ? GvENAME(gv) | |
3136 | : ((cv && CvGV(cv)) | |
3137 | ? GvENAME(CvGV(cv)) | |
3138 | : "__ANON__"))); | |
00d579c5 | 3139 | goto cleanup; |
79072805 LW |
3140 | } |
3141 | ||
0c4d3b5e DM |
3142 | sv = PL_psig_name[sig] |
3143 | ? SvREFCNT_inc_NN(PL_psig_name[sig]) | |
3144 | : newSVpv(PL_sig_name[sig],0); | |
72048cfe | 3145 | flags |= 8; |
0c4d3b5e DM |
3146 | SAVEFREESV(sv); |
3147 | ||
a0d63a7b DM |
3148 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3149 | /* make sure our assumption about the size of the SAVEs are correct: | |
3150 | * 3 for SAVEDESTRUCTOR_X, 2 for SAVEFREESV */ | |
3151 | assert(old_ss_ix + 2 + ((flags & 1) ? 3+5 : 0) == PL_savestack_ix); | |
3152 | } | |
e336de0d | 3153 | |
e788e7d3 | 3154 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 3155 | PUSHMARK(SP); |
79072805 | 3156 | PUSHs(sv); |
8aad04aa JH |
3157 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
3158 | { | |
3159 | struct sigaction oact; | |
3160 | ||
3161 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
3162 | if (sip) { |
3163 | HV *sih = newHV(); | |
ad64d0ec | 3164 | SV *rv = newRV_noinc(MUTABLE_SV(sih)); |
8aad04aa JH |
3165 | /* The siginfo fields signo, code, errno, pid, uid, |
3166 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
3167 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
3168 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 3169 | #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 |
3170 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
3171 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
3172 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
3173 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
3174 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
3175 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 3176 | #endif |
8aad04aa | 3177 | EXTEND(SP, 2); |
ad64d0ec | 3178 | PUSHs(rv); |
22f1178f | 3179 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 3180 | } |
b4552a27 | 3181 | |
8aad04aa JH |
3182 | } |
3183 | } | |
3184 | #endif | |
79072805 | 3185 | PUTBACK; |
a0d0e21e | 3186 | |
100c03aa JL |
3187 | errsv_save = newSVsv(ERRSV); |
3188 | ||
ad64d0ec | 3189 | call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL); |
79072805 | 3190 | |
d3acc0f7 | 3191 | POPSTACK; |
1b266415 | 3192 | if (SvTRUE(ERRSV)) { |
100c03aa | 3193 | SvREFCNT_dec(errsv_save); |
c22d665b | 3194 | #ifndef PERL_MICRO |
1b266415 NIS |
3195 | /* Handler "died", for example to get out of a restart-able read(). |
3196 | * Before we re-do that on its behalf re-enable the signal which was | |
3197 | * blocked by the system when we entered. | |
3198 | */ | |
c22d665b | 3199 | #ifdef HAS_SIGPROCMASK |
d488af49 | 3200 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3201 | if (sip || uap) |
c22d665b LT |
3202 | #endif |
3203 | { | |
3204 | sigset_t set; | |
3205 | sigemptyset(&set); | |
3206 | sigaddset(&set,sig); | |
3207 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
3208 | } | |
3209 | #else | |
1b266415 NIS |
3210 | /* Not clear if this will work */ |
3211 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 3212 | (void)rsignal(sig, PL_csighandlerp); |
c22d665b LT |
3213 | #endif |
3214 | #endif /* !PERL_MICRO */ | |
c5df3096 | 3215 | die_sv(ERRSV); |
1b266415 | 3216 | } |
100c03aa JL |
3217 | else { |
3218 | sv_setsv(ERRSV, errsv_save); | |
3219 | SvREFCNT_dec(errsv_save); | |
3220 | } | |
3221 | ||
00d579c5 | 3222 | cleanup: |
0c4d3b5e DM |
3223 | /* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */ |
3224 | PL_savestack_ix = old_ss_ix; | |
72048cfe | 3225 | if (flags & 8) |
84902520 | 3226 | SvREFCNT_dec(sv); |
533c011a | 3227 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 3228 | |
3280af22 NIS |
3229 | PL_Sv = tSv; /* Restore global temporaries. */ |
3230 | PL_Xpv = tXpv; | |
53bb94e2 | 3231 | return; |
79072805 | 3232 | } |
4e35701f NIS |
3233 | |
3234 | ||
51371543 | 3235 | static void |
8772537c | 3236 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3237 | { |
97aff369 | 3238 | dVAR; |
8772537c AL |
3239 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3240 | SV* const sv = mgs->mgs_sv; | |
150b625d | 3241 | bool bumped; |
51371543 GS |
3242 | |
3243 | if (!sv) | |
3244 | return; | |
3245 | ||
4bac9ae4 CS |
3246 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
3247 | SvTEMP_off(sv); /* if it's still magical, this value isn't temporary */ | |
f8c7b90f | 3248 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3249 | /* While magic was saved (and off) sv_setsv may well have seen |
3250 | this SV as a prime candidate for COW. */ | |
3251 | if (SvIsCOW(sv)) | |
e424a81e | 3252 | sv_force_normal_flags(sv, 0); |
f9701176 | 3253 | #endif |
f9c6fee5 CS |
3254 | if (mgs->mgs_readonly) |
3255 | SvREADONLY_on(sv); | |
3256 | if (mgs->mgs_magical) | |
3257 | SvFLAGS(sv) |= mgs->mgs_magical; | |
51371543 GS |
3258 | else |
3259 | mg_magical(sv); | |
51371543 GS |
3260 | } |
3261 | ||
150b625d | 3262 | bumped = mgs->mgs_bumped; |
51371543 GS |
3263 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
3264 | ||
3265 | /* If we're still on top of the stack, pop us off. (That condition | |
3266 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3267 | * if it's being called via leave_scope.) | |
3268 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3269 | * may leave alloc gunk on the savestack, and some code | |
3270 | * (e.g. sighandler) doesn't expect that... | |
3271 | */ | |
3272 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3273 | { | |
1be36ce0 NC |
3274 | UV popval = SSPOPUV; |
3275 | assert(popval == SAVEt_DESTRUCTOR_X); | |
51371543 | 3276 | PL_savestack_ix -= 2; |
1be36ce0 NC |
3277 | popval = SSPOPUV; |
3278 | assert((popval & SAVE_MASK) == SAVEt_ALLOC); | |
3279 | PL_savestack_ix -= popval >> SAVE_TIGHT_SHIFT; | |
51371543 | 3280 | } |
150b625d DM |
3281 | if (bumped) { |
3282 | if (SvREFCNT(sv) == 1) { | |
3283 | /* We hold the last reference to this SV, which implies that the | |
3284 | SV was deleted as a side effect of the routines we called. | |
3285 | So artificially keep it alive a bit longer. | |
3286 | We avoid turning on the TEMP flag, which can cause the SV's | |
3287 | buffer to get stolen (and maybe other stuff). */ | |
150b625d | 3288 | sv_2mortal(sv); |
4bac9ae4 | 3289 | SvTEMP_off(sv); |
8985fe98 | 3290 | } |
150b625d DM |
3291 | else |
3292 | SvREFCNT_dec(sv); /* undo the inc in S_save_magic() */ | |
8985fe98 | 3293 | } |
51371543 GS |
3294 | } |
3295 | ||
0c4d3b5e DM |
3296 | /* clean up the mess created by Perl_sighandler(). |
3297 | * Note that this is only called during an exit in a signal handler; | |
3298 | * a die is trapped by the call_sv() and the SAVEDESTRUCTOR_X manually | |
9a7f166c | 3299 | * skipped over. */ |
0c4d3b5e | 3300 | |
51371543 | 3301 | static void |
8772537c | 3302 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3303 | { |
27da23d5 | 3304 | dVAR; |
0c4d3b5e | 3305 | PERL_UNUSED_ARG(p); |
7918f24d | 3306 | |
0c4d3b5e | 3307 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
51371543 | 3308 | } |
1018e26f | 3309 | |
66610fdd | 3310 | /* |
b3ca2e83 NC |
3311 | =for apidoc magic_sethint |
3312 | ||
3313 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3314 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3315 | anything that would need a deep copy. Maybe we should warn if we find a | |
3316 | reference. | |
b3ca2e83 NC |
3317 | |
3318 | =cut | |
3319 | */ | |
3320 | int | |
3321 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3322 | { | |
3323 | dVAR; | |
ad64d0ec | 3324 | SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr) |
59cd0e26 | 3325 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3326 | |
7918f24d NC |
3327 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3328 | ||
e6e3e454 NC |
3329 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3330 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3331 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3332 | or take other more complex action. */ | |
3333 | ||
5b9c0671 NC |
3334 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3335 | Doing this here saves a lot of doing it manually in perl code (and | |
3336 | forgetting to do it, and consequent subtle errors. */ | |
3337 | PL_hints |= HINT_LOCALIZE_HH; | |
20439bc7 Z |
3338 | CopHINTHASH_set(&PL_compiling, |
3339 | cophh_store_sv(CopHINTHASH_get(&PL_compiling), key, 0, sv, 0)); | |
b3ca2e83 NC |
3340 | return 0; |
3341 | } | |
3342 | ||
3343 | /* | |
f175cff5 | 3344 | =for apidoc magic_clearhint |
b3ca2e83 | 3345 | |
c28fe1ec NC |
3346 | Triggered by a delete from %^H, records the key to |
3347 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3348 | |
3349 | =cut | |
3350 | */ | |
3351 | int | |
3352 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3353 | { | |
3354 | dVAR; | |
7918f24d NC |
3355 | |
3356 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; | |
f5a63d97 AL |
3357 | PERL_UNUSED_ARG(sv); |
3358 | ||
5b9c0671 | 3359 | PL_hints |= HINT_LOCALIZE_HH; |
20439bc7 | 3360 | CopHINTHASH_set(&PL_compiling, |
e3352591 FC |
3361 | mg->mg_len == HEf_SVKEY |
3362 | ? cophh_delete_sv(CopHINTHASH_get(&PL_compiling), | |
3363 | MUTABLE_SV(mg->mg_ptr), 0, 0) | |
3364 | : cophh_delete_pvn(CopHINTHASH_get(&PL_compiling), | |
3365 | mg->mg_ptr, mg->mg_len, 0, 0)); | |
b3ca2e83 NC |
3366 | return 0; |
3367 | } | |
3368 | ||
3369 | /* | |
f747ebd6 Z |
3370 | =for apidoc magic_clearhints |
3371 | ||
3372 | Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>. | |
3373 | ||
3374 | =cut | |
3375 | */ | |
3376 | int | |
3377 | Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg) | |
3378 | { | |
3379 | PERL_ARGS_ASSERT_MAGIC_CLEARHINTS; | |
3380 | PERL_UNUSED_ARG(sv); | |
3381 | PERL_UNUSED_ARG(mg); | |
20439bc7 Z |
3382 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
3383 | CopHINTHASH_set(&PL_compiling, cophh_new_empty()); | |
f747ebd6 Z |
3384 | return 0; |
3385 | } | |
3386 | ||
09fb282d FC |
3387 | int |
3388 | Perl_magic_copycallchecker(pTHX_ SV *sv, MAGIC *mg, SV *nsv, | |
3389 | const char *name, I32 namlen) | |
3390 | { | |
3391 | MAGIC *nmg; | |
3392 | ||
3393 | PERL_ARGS_ASSERT_MAGIC_COPYCALLCHECKER; | |
4f8dbb2d | 3394 | PERL_UNUSED_ARG(sv); |
09fb282d FC |
3395 | PERL_UNUSED_ARG(name); |
3396 | PERL_UNUSED_ARG(namlen); | |
3397 | ||
3398 | sv_magic(nsv, &PL_sv_undef, mg->mg_type, NULL, 0); | |
3399 | nmg = mg_find(nsv, mg->mg_type); | |
3400 | if (nmg->mg_flags & MGf_REFCOUNTED) SvREFCNT_dec(nmg->mg_obj); | |
3401 | nmg->mg_ptr = mg->mg_ptr; | |
3402 | nmg->mg_obj = SvREFCNT_inc_simple(mg->mg_obj); | |
3403 | nmg->mg_flags |= MGf_REFCOUNTED; | |
3404 | return 1; | |
3405 | } | |
3406 | ||
f747ebd6 | 3407 | /* |
66610fdd RGS |
3408 | * Local variables: |
3409 | * c-indentation-style: bsd | |
3410 | * c-basic-offset: 4 | |
14d04a33 | 3411 | * indent-tabs-mode: nil |
66610fdd RGS |
3412 | * End: |
3413 | * | |
14d04a33 | 3414 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3415 | */ |