Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
4ac71550 TC |
12 | * Sam sat on the ground and put his head in his hands. 'I wish I had never |
13 | * come here, and I don't want to see no more magic,' he said, and fell silent. | |
14 | * | |
15 | * [p.363 of _The Lord of the Rings_, II/vii: "The Mirror of Galadriel"] | |
79072805 LW |
16 | */ |
17 | ||
ccfc67b7 JH |
18 | /* |
19 | =head1 Magical Functions | |
166f8a29 DM |
20 | |
21 | "Magic" is special data attached to SV structures in order to give them | |
22 | "magical" properties. When any Perl code tries to read from, or assign to, | |
23 | an SV marked as magical, it calls the 'get' or 'set' function associated | |
24 | with that SV's magic. A get is called prior to reading an SV, in order to | |
ddfa107c | 25 | give it a chance to update its internal value (get on $. writes the line |
166f8a29 DM |
26 | number of the last read filehandle into to the SV's IV slot), while |
27 | set is called after an SV has been written to, in order to allow it to make | |
ddfa107c | 28 | use of its changed value (set on $/ copies the SV's new value to the |
166f8a29 DM |
29 | PL_rs global variable). |
30 | ||
31 | Magic is implemented as a linked list of MAGIC structures attached to the | |
32 | SV. Each MAGIC struct holds the type of the magic, a pointer to an array | |
33 | of functions that implement the get(), set(), length() etc functions, | |
34 | plus space for some flags and pointers. For example, a tied variable has | |
35 | a MAGIC structure that contains a pointer to the object associated with the | |
36 | tie. | |
37 | ||
ccfc67b7 JH |
38 | */ |
39 | ||
79072805 | 40 | #include "EXTERN.h" |
864dbfa3 | 41 | #define PERL_IN_MG_C |
79072805 LW |
42 | #include "perl.h" |
43 | ||
5cd24f17 | 44 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
b7953727 JH |
45 | # ifdef I_GRP |
46 | # include <grp.h> | |
47 | # endif | |
188ea221 CS |
48 | #endif |
49 | ||
757f63d8 SP |
50 | #if defined(HAS_SETGROUPS) |
51 | # ifndef NGROUPS | |
52 | # define NGROUPS 32 | |
53 | # endif | |
54 | #endif | |
55 | ||
17aa7f3d JH |
56 | #ifdef __hpux |
57 | # include <sys/pstat.h> | |
58 | #endif | |
59 | ||
7636ea95 AB |
60 | #ifdef HAS_PRCTL_SET_NAME |
61 | # include <sys/prctl.h> | |
62 | #endif | |
63 | ||
8aad04aa | 64 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 65 | Signal_t Perl_csighandler(int sig, siginfo_t *, void *); |
8aad04aa | 66 | #else |
e69880a5 | 67 | Signal_t Perl_csighandler(int sig); |
8aad04aa | 68 | #endif |
e69880a5 | 69 | |
9cffb111 OS |
70 | #ifdef __Lynx__ |
71 | /* Missing protos on LynxOS */ | |
72 | void setruid(uid_t id); | |
73 | void seteuid(uid_t id); | |
74 | void setrgid(uid_t id); | |
75 | void setegid(uid_t id); | |
76 | #endif | |
77 | ||
c07a80fd | 78 | /* |
79 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
80 | */ | |
81 | ||
82 | struct magic_state { | |
83 | SV* mgs_sv; | |
455ece5e | 84 | I32 mgs_ss_ix; |
f9c6fee5 CS |
85 | U32 mgs_magical; |
86 | bool mgs_readonly; | |
150b625d | 87 | bool mgs_bumped; |
c07a80fd | 88 | }; |
455ece5e | 89 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
90 | |
91 | STATIC void | |
8fb26106 | 92 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 93 | { |
97aff369 | 94 | dVAR; |
455ece5e | 95 | MGS* mgs; |
150b625d | 96 | bool bumped = FALSE; |
7918f24d NC |
97 | |
98 | PERL_ARGS_ASSERT_SAVE_MAGIC; | |
99 | ||
150b625d DM |
100 | /* we shouldn't really be called here with RC==0, but it can sometimes |
101 | * happen via mg_clear() (which also shouldn't be called when RC==0, | |
102 | * but it can happen). Handle this case gracefully(ish) by not RC++ | |
103 | * and thus avoiding the resultant double free */ | |
104 | if (SvREFCNT(sv) > 0) { | |
105 | /* guard against sv getting freed midway through the mg clearing, | |
106 | * by holding a private reference for the duration. */ | |
107 | SvREFCNT_inc_simple_void_NN(sv); | |
108 | bumped = TRUE; | |
109 | } | |
8985fe98 | 110 | |
c07a80fd | 111 | assert(SvMAGICAL(sv)); |
d8b2590f NC |
112 | /* Turning READONLY off for a copy-on-write scalar (including shared |
113 | hash keys) is a bad idea. */ | |
765f542d | 114 | if (SvIsCOW(sv)) |
9a265e59 | 115 | sv_force_normal_flags(sv, 0); |
c07a80fd | 116 | |
8772537c | 117 | SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
118 | |
119 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 120 | mgs->mgs_sv = sv; |
f9c6fee5 CS |
121 | mgs->mgs_magical = SvMAGICAL(sv); |
122 | mgs->mgs_readonly = SvREADONLY(sv) != 0; | |
455ece5e | 123 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
150b625d | 124 | mgs->mgs_bumped = bumped; |
c07a80fd | 125 | |
126 | SvMAGICAL_off(sv); | |
127 | SvREADONLY_off(sv); | |
085bde85 NC |
128 | if (!(SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK))) { |
129 | /* No public flags are set, so promote any private flags to public. */ | |
130 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; | |
131 | } | |
c07a80fd | 132 | } |
133 | ||
954c1994 GS |
134 | /* |
135 | =for apidoc mg_magical | |
136 | ||
137 | Turns on the magical status of an SV. See C<sv_magic>. | |
138 | ||
139 | =cut | |
140 | */ | |
141 | ||
8990e307 | 142 | void |
864dbfa3 | 143 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 | 144 | { |
e1ec3a88 | 145 | const MAGIC* mg; |
7918f24d | 146 | PERL_ARGS_ASSERT_MG_MAGICAL; |
96a5add6 | 147 | PERL_UNUSED_CONTEXT; |
f9c6fee5 CS |
148 | |
149 | SvMAGICAL_off(sv); | |
218787bd | 150 | if ((mg = SvMAGIC(sv))) { |
218787bd VP |
151 | do { |
152 | const MGVTBL* const vtbl = mg->mg_virtual; | |
153 | if (vtbl) { | |
154 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) | |
155 | SvGMAGICAL_on(sv); | |
156 | if (vtbl->svt_set) | |
157 | SvSMAGICAL_on(sv); | |
158 | if (vtbl->svt_clear) | |
159 | SvRMAGICAL_on(sv); | |
160 | } | |
161 | } while ((mg = mg->mg_moremagic)); | |
162 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG))) | |
163 | SvRMAGICAL_on(sv); | |
8990e307 LW |
164 | } |
165 | } | |
166 | ||
954c1994 GS |
167 | /* |
168 | =for apidoc mg_get | |
169 | ||
170 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
171 | ||
172 | =cut | |
173 | */ | |
174 | ||
79072805 | 175 | int |
864dbfa3 | 176 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 177 | { |
97aff369 | 178 | dVAR; |
35a4481c | 179 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
f9c6fee5 | 180 | bool have_new = 0; |
ff76feab | 181 | MAGIC *newmg, *head, *cur, *mg; |
6683b158 | 182 | |
7918f24d NC |
183 | PERL_ARGS_ASSERT_MG_GET; |
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 | ||
455ece5e | 254 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
255 | |
256 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 257 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 258 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
259 | if (mg->mg_flags & MGf_GSKIP) { |
260 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
f9c6fee5 | 261 | (SSPTR(mgs_ix, MGS*))->mgs_magical = 0; |
a0d0e21e | 262 | } |
e0a73de4 NC |
263 | if (PL_localizing == 2 |
264 | && (PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type) || sv == DEFSV)) | |
e7cbf6c6 | 265 | continue; |
2b260de0 | 266 | if (vtbl && vtbl->svt_set) |
16c91539 | 267 | vtbl->svt_set(aTHX_ sv, mg); |
79072805 | 268 | } |
463ee0b2 | 269 | |
8772537c | 270 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
271 | return 0; |
272 | } | |
273 | ||
954c1994 GS |
274 | /* |
275 | =for apidoc mg_length | |
276 | ||
277 | Report on the SV's length. See C<sv_magic>. | |
278 | ||
279 | =cut | |
280 | */ | |
281 | ||
79072805 | 282 | U32 |
864dbfa3 | 283 | Perl_mg_length(pTHX_ SV *sv) |
79072805 | 284 | { |
97aff369 | 285 | dVAR; |
79072805 | 286 | MAGIC* mg; |
463ee0b2 | 287 | STRLEN len; |
463ee0b2 | 288 | |
7918f24d NC |
289 | PERL_ARGS_ASSERT_MG_LENGTH; |
290 | ||
79072805 | 291 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 292 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 293 | if (vtbl && vtbl->svt_len) { |
35a4481c | 294 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 295 | save_magic(mgs_ix, sv); |
a0d0e21e | 296 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 297 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 298 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
299 | return len; |
300 | } | |
301 | } | |
302 | ||
d0644529 NC |
303 | { |
304 | /* You can't know whether it's UTF-8 until you get the string again... | |
305 | */ | |
10516c54 | 306 | const U8 *s = (U8*)SvPV_const(sv, len); |
d0644529 NC |
307 | |
308 | if (DO_UTF8(sv)) { | |
309 | len = utf8_length(s, s + len); | |
310 | } | |
5636d518 | 311 | } |
463ee0b2 | 312 | return len; |
79072805 LW |
313 | } |
314 | ||
8fb26106 | 315 | I32 |
864dbfa3 | 316 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
317 | { |
318 | MAGIC* mg; | |
ac27b0f5 | 319 | |
7918f24d NC |
320 | PERL_ARGS_ASSERT_MG_SIZE; |
321 | ||
93965878 | 322 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 323 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 324 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
325 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
326 | I32 len; | |
455ece5e | 327 | save_magic(mgs_ix, sv); |
93965878 | 328 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 329 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 330 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
331 | return len; |
332 | } | |
333 | } | |
334 | ||
335 | switch(SvTYPE(sv)) { | |
336 | case SVt_PVAV: | |
502c6561 | 337 | return AvFILLp((const AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
338 | case SVt_PVHV: |
339 | /* FIXME */ | |
340 | default: | |
cea2e8a9 | 341 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
342 | break; |
343 | } | |
344 | return 0; | |
345 | } | |
346 | ||
954c1994 GS |
347 | /* |
348 | =for apidoc mg_clear | |
349 | ||
350 | Clear something magical that the SV represents. See C<sv_magic>. | |
351 | ||
352 | =cut | |
353 | */ | |
354 | ||
79072805 | 355 | int |
864dbfa3 | 356 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 357 | { |
35a4481c | 358 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 359 | MAGIC* mg; |
8ac77ac9 | 360 | MAGIC *nextmg; |
463ee0b2 | 361 | |
7918f24d NC |
362 | PERL_ARGS_ASSERT_MG_CLEAR; |
363 | ||
455ece5e | 364 | save_magic(mgs_ix, sv); |
463ee0b2 | 365 | |
8ac77ac9 | 366 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
35a4481c | 367 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 368 | /* omit GSKIP -- never set here */ |
727405f8 | 369 | |
8ac77ac9 NC |
370 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
371 | ||
2b260de0 | 372 | if (vtbl && vtbl->svt_clear) |
16c91539 | 373 | vtbl->svt_clear(aTHX_ sv, mg); |
79072805 | 374 | } |
463ee0b2 | 375 | |
8772537c | 376 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
377 | return 0; |
378 | } | |
379 | ||
ed624ca8 | 380 | static MAGIC* |
39de7f53 FR |
381 | S_mg_findext_flags(pTHX_ const SV *sv, int type, const MGVTBL *vtbl, U32 flags) |
382 | { | |
383 | PERL_UNUSED_CONTEXT; | |
384 | ||
385 | assert(flags <= 1); | |
386 | ||
387 | if (sv) { | |
388 | MAGIC *mg; | |
389 | ||
390 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
391 | if (mg->mg_type == type && (!flags || mg->mg_virtual == vtbl)) { | |
392 | return mg; | |
393 | } | |
394 | } | |
395 | } | |
396 | ||
397 | return NULL; | |
398 | } | |
399 | ||
954c1994 GS |
400 | /* |
401 | =for apidoc mg_find | |
402 | ||
403 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
404 | ||
405 | =cut | |
406 | */ | |
407 | ||
93a17b20 | 408 | MAGIC* |
35a4481c | 409 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 410 | { |
39de7f53 FR |
411 | return S_mg_findext_flags(aTHX_ sv, type, NULL, 0); |
412 | } | |
413 | ||
414 | /* | |
415 | =for apidoc mg_findext | |
416 | ||
417 | Finds the magic pointer of C<type> with the given C<vtbl> for the C<SV>. See | |
418 | C<sv_magicext>. | |
419 | ||
420 | =cut | |
421 | */ | |
422 | ||
423 | MAGIC* | |
424 | Perl_mg_findext(pTHX_ const SV *sv, int type, const MGVTBL *vtbl) | |
425 | { | |
426 | return S_mg_findext_flags(aTHX_ sv, type, vtbl, 1); | |
93a17b20 LW |
427 | } |
428 | ||
954c1994 GS |
429 | /* |
430 | =for apidoc mg_copy | |
431 | ||
432 | Copies the magic from one SV to another. See C<sv_magic>. | |
433 | ||
434 | =cut | |
435 | */ | |
436 | ||
79072805 | 437 | int |
864dbfa3 | 438 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 439 | { |
463ee0b2 | 440 | int count = 0; |
79072805 | 441 | MAGIC* mg; |
7918f24d NC |
442 | |
443 | PERL_ARGS_ASSERT_MG_COPY; | |
444 | ||
463ee0b2 | 445 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 446 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 | 447 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
16c91539 | 448 | count += vtbl->svt_copy(aTHX_ sv, mg, nsv, key, klen); |
68795e93 | 449 | } |
823a54a3 AL |
450 | else { |
451 | const char type = mg->mg_type; | |
1e73acc8 | 452 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
453 | sv_magic(nsv, |
454 | (type == PERL_MAGIC_tied) | |
455 | ? SvTIED_obj(sv, mg) | |
456 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
457 | ? sv | |
458 | : mg->mg_obj, | |
459 | toLOWER(type), key, klen); | |
460 | count++; | |
461 | } | |
79072805 | 462 | } |
79072805 | 463 | } |
463ee0b2 | 464 | return count; |
79072805 LW |
465 | } |
466 | ||
954c1994 | 467 | /* |
0cbee0a4 DM |
468 | =for apidoc mg_localize |
469 | ||
9711599e CS |
470 | Copy some of the magic from an existing SV to new localized version of that |
471 | SV. Container magic (eg %ENV, $1, tie) gets copied, value magic doesn't (eg | |
472 | taint, pos). | |
473 | ||
af7df257 | 474 | If setmagic is false then no set magic will be called on the new (empty) SV. |
9711599e CS |
475 | This typically means that assignment will soon follow (e.g. 'local $x = $y'), |
476 | and that will handle the magic. | |
0cbee0a4 DM |
477 | |
478 | =cut | |
479 | */ | |
480 | ||
481 | void | |
af7df257 | 482 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv, bool setmagic) |
0cbee0a4 | 483 | { |
97aff369 | 484 | dVAR; |
0cbee0a4 | 485 | MAGIC *mg; |
7918f24d NC |
486 | |
487 | PERL_ARGS_ASSERT_MG_LOCALIZE; | |
488 | ||
658a9f31 JD |
489 | if (nsv == DEFSV) |
490 | return; | |
491 | ||
0cbee0a4 | 492 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
2b1b43ea | 493 | const MGVTBL* const vtbl = mg->mg_virtual; |
e0a73de4 | 494 | if (PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
0cbee0a4 | 495 | continue; |
0cbee0a4 | 496 | |
a5063e7c | 497 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
16c91539 | 498 | (void)vtbl->svt_local(aTHX_ nsv, mg); |
a5063e7c | 499 | else |
0cbee0a4 DM |
500 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
501 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 502 | |
0cbee0a4 | 503 | /* container types should remain read-only across localization */ |
b2b95e4c | 504 | if (!SvIsCOW(sv)) SvFLAGS(nsv) |= SvREADONLY(sv); |
0cbee0a4 DM |
505 | } |
506 | ||
507 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
508 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
af7df257 | 509 | if (setmagic) { |
9711599e CS |
510 | PL_localizing = 1; |
511 | SvSETMAGIC(nsv); | |
512 | PL_localizing = 0; | |
513 | } | |
0cbee0a4 DM |
514 | } |
515 | } | |
516 | ||
d9088386 Z |
517 | #define mg_free_struct(sv, mg) S_mg_free_struct(aTHX_ sv, mg) |
518 | static void | |
519 | S_mg_free_struct(pTHX_ SV *sv, MAGIC *mg) | |
520 | { | |
521 | const MGVTBL* const vtbl = mg->mg_virtual; | |
522 | if (vtbl && vtbl->svt_free) | |
523 | vtbl->svt_free(aTHX_ sv, mg); | |
524 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { | |
525 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) | |
526 | Safefree(mg->mg_ptr); | |
527 | else if (mg->mg_len == HEf_SVKEY) | |
528 | SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr)); | |
529 | } | |
530 | if (mg->mg_flags & MGf_REFCOUNTED) | |
531 | SvREFCNT_dec(mg->mg_obj); | |
532 | Safefree(mg); | |
533 | } | |
534 | ||
0cbee0a4 | 535 | /* |
954c1994 GS |
536 | =for apidoc mg_free |
537 | ||
538 | Free any magic storage used by the SV. See C<sv_magic>. | |
539 | ||
540 | =cut | |
541 | */ | |
542 | ||
79072805 | 543 | int |
864dbfa3 | 544 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
545 | { |
546 | MAGIC* mg; | |
547 | MAGIC* moremagic; | |
7918f24d NC |
548 | |
549 | PERL_ARGS_ASSERT_MG_FREE; | |
550 | ||
79072805 | 551 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
79072805 | 552 | moremagic = mg->mg_moremagic; |
d9088386 | 553 | mg_free_struct(sv, mg); |
c826f41b | 554 | SvMAGIC_set(sv, moremagic); |
79072805 | 555 | } |
b162af07 | 556 | SvMAGIC_set(sv, NULL); |
68f8932e | 557 | SvMAGICAL_off(sv); |
79072805 LW |
558 | return 0; |
559 | } | |
560 | ||
d9088386 Z |
561 | /* |
562 | =for apidoc Am|void|mg_free_type|SV *sv|int how | |
563 | ||
564 | Remove any magic of type I<how> from the SV I<sv>. See L</sv_magic>. | |
565 | ||
566 | =cut | |
567 | */ | |
568 | ||
569 | void | |
570 | Perl_mg_free_type(pTHX_ SV *sv, int how) | |
571 | { | |
572 | MAGIC *mg, *prevmg, *moremg; | |
573 | PERL_ARGS_ASSERT_MG_FREE_TYPE; | |
574 | for (prevmg = NULL, mg = SvMAGIC(sv); mg; prevmg = mg, mg = moremg) { | |
575 | MAGIC *newhead; | |
576 | moremg = mg->mg_moremagic; | |
577 | if (mg->mg_type == how) { | |
578 | /* temporarily move to the head of the magic chain, in case | |
579 | custom free code relies on this historical aspect of mg_free */ | |
580 | if (prevmg) { | |
581 | prevmg->mg_moremagic = moremg; | |
582 | mg->mg_moremagic = SvMAGIC(sv); | |
583 | SvMAGIC_set(sv, mg); | |
584 | } | |
585 | newhead = mg->mg_moremagic; | |
586 | mg_free_struct(sv, mg); | |
587 | SvMAGIC_set(sv, newhead); | |
588 | mg = prevmg; | |
589 | } | |
590 | } | |
591 | mg_magical(sv); | |
592 | } | |
593 | ||
79072805 | 594 | #include <signal.h> |
79072805 | 595 | |
942e002e | 596 | U32 |
864dbfa3 | 597 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 598 | { |
97aff369 | 599 | dVAR; |
8772537c | 600 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 601 | |
7918f24d NC |
602 | PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT; |
603 | ||
0bd48802 AL |
604 | if (PL_curpm) { |
605 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
606 | if (rx) { | |
a678b0e4 YO |
607 | if (mg->mg_obj) { /* @+ */ |
608 | /* return the number possible */ | |
07bc277f | 609 | return RX_NPARENS(rx); |
a678b0e4 | 610 | } else { /* @- */ |
07bc277f | 611 | I32 paren = RX_LASTPAREN(rx); |
a678b0e4 YO |
612 | |
613 | /* return the last filled */ | |
f46c4081 | 614 | while ( paren >= 0 |
07bc277f NC |
615 | && (RX_OFFS(rx)[paren].start == -1 |
616 | || RX_OFFS(rx)[paren].end == -1) ) | |
f46c4081 | 617 | paren--; |
a678b0e4 YO |
618 | return (U32)paren; |
619 | } | |
0bd48802 | 620 | } |
8f580fb8 | 621 | } |
ac27b0f5 | 622 | |
942e002e | 623 | return (U32)-1; |
6cef1e77 IZ |
624 | } |
625 | ||
626 | int | |
864dbfa3 | 627 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 628 | { |
97aff369 | 629 | dVAR; |
7918f24d NC |
630 | |
631 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET; | |
632 | ||
0bd48802 AL |
633 | if (PL_curpm) { |
634 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
635 | if (rx) { | |
636 | register const I32 paren = mg->mg_len; | |
637 | register I32 s; | |
638 | register I32 t; | |
639 | if (paren < 0) | |
640 | return 0; | |
07bc277f NC |
641 | if (paren <= (I32)RX_NPARENS(rx) && |
642 | (s = RX_OFFS(rx)[paren].start) != -1 && | |
643 | (t = RX_OFFS(rx)[paren].end) != -1) | |
0bd48802 AL |
644 | { |
645 | register I32 i; | |
646 | if (mg->mg_obj) /* @+ */ | |
647 | i = t; | |
648 | else /* @- */ | |
649 | i = s; | |
650 | ||
651 | if (i > 0 && RX_MATCH_UTF8(rx)) { | |
07bc277f | 652 | const char * const b = RX_SUBBEG(rx); |
0bd48802 | 653 | if (b) |
f5a63d97 | 654 | i = utf8_length((U8*)b, (U8*)(b+i)); |
0bd48802 | 655 | } |
727405f8 | 656 | |
0bd48802 | 657 | sv_setiv(sv, i); |
1aa99e6b | 658 | } |
0bd48802 | 659 | } |
6cef1e77 IZ |
660 | } |
661 | return 0; | |
662 | } | |
663 | ||
e4b89193 | 664 | int |
a29d06ed MG |
665 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
666 | { | |
7918f24d | 667 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET; |
d4c19fe8 AL |
668 | PERL_UNUSED_ARG(sv); |
669 | PERL_UNUSED_ARG(mg); | |
6ad8f254 | 670 | Perl_croak_no_modify(aTHX); |
0dbb1585 | 671 | NORETURN_FUNCTION_END; |
a29d06ed MG |
672 | } |
673 | ||
93a17b20 | 674 | U32 |
864dbfa3 | 675 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 676 | { |
97aff369 | 677 | dVAR; |
93a17b20 | 678 | register I32 paren; |
93a17b20 | 679 | register I32 i; |
2fdbfb4d AB |
680 | register const REGEXP * rx; |
681 | const char * const remaining = mg->mg_ptr + 1; | |
93a17b20 | 682 | |
7918f24d NC |
683 | PERL_ARGS_ASSERT_MAGIC_LEN; |
684 | ||
93a17b20 | 685 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
686 | case '\020': |
687 | if (*remaining == '\0') { /* ^P */ | |
688 | break; | |
689 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
690 | goto do_prematch; | |
691 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
692 | goto do_postmatch; | |
693 | } | |
694 | break; | |
695 | case '\015': /* $^MATCH */ | |
696 | if (strEQ(remaining, "ATCH")) { | |
697 | goto do_match; | |
698 | } else { | |
699 | break; | |
700 | } | |
701 | case '`': | |
702 | do_prematch: | |
f1b875a0 | 703 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
704 | goto maybegetparen; |
705 | case '\'': | |
706 | do_postmatch: | |
f1b875a0 | 707 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
708 | goto maybegetparen; |
709 | case '&': | |
710 | do_match: | |
f1b875a0 | 711 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d | 712 | goto maybegetparen; |
93a17b20 | 713 | case '1': case '2': case '3': case '4': |
2fdbfb4d AB |
714 | case '5': case '6': case '7': case '8': case '9': |
715 | paren = atoi(mg->mg_ptr); | |
716 | maybegetparen: | |
aaa362c4 | 717 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
718 | getparen: |
719 | i = CALLREG_NUMBUF_LENGTH((REGEXP * const)rx, sv, paren); | |
cf93c79d | 720 | |
ffc61ed2 | 721 | if (i < 0) |
0844c848 | 722 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 723 | return i; |
2fdbfb4d | 724 | } else { |
235bddc8 | 725 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 726 | report_uninit(sv); |
2fdbfb4d | 727 | return 0; |
93a17b20 | 728 | } |
93a17b20 | 729 | case '+': |
aaa362c4 | 730 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f | 731 | paren = RX_LASTPAREN(rx); |
13f57bf8 CS |
732 | if (paren) |
733 | goto getparen; | |
93a17b20 | 734 | } |
748a9306 | 735 | return 0; |
a01268b5 JH |
736 | case '\016': /* ^N */ |
737 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f | 738 | paren = RX_LASTCLOSEPAREN(rx); |
a01268b5 JH |
739 | if (paren) |
740 | goto getparen; | |
741 | } | |
742 | return 0; | |
93a17b20 LW |
743 | } |
744 | magic_get(sv,mg); | |
2d8e6c8d | 745 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 | 746 | sv_2pv(sv, 0); |
2d8e6c8d | 747 | } |
93a17b20 LW |
748 | if (SvPOK(sv)) |
749 | return SvCUR(sv); | |
750 | return 0; | |
751 | } | |
752 | ||
ad3296c6 | 753 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
754 | if (SvPOK(sv)) { \ |
755 | STRLEN len = SvCUR(sv); \ | |
756 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
757 | while (len > 0 && isSPACE(p[len-1])) \ |
758 | --len; \ | |
759 | SvCUR_set(sv, len); \ | |
760 | p[len] = '\0'; \ | |
761 | } \ | |
ad3296c6 SH |
762 | } STMT_END |
763 | ||
8b850bd5 NC |
764 | void |
765 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
766 | { | |
7918f24d NC |
767 | PERL_ARGS_ASSERT_EMULATE_COP_IO; |
768 | ||
8b850bd5 NC |
769 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) |
770 | sv_setsv(sv, &PL_sv_undef); | |
771 | else { | |
772 | sv_setpvs(sv, ""); | |
773 | SvUTF8_off(sv); | |
774 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
20439bc7 | 775 | SV *const value = cop_hints_fetch_pvs(c, "open<", 0); |
8b850bd5 NC |
776 | assert(value); |
777 | sv_catsv(sv, value); | |
778 | } | |
779 | sv_catpvs(sv, "\0"); | |
780 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
20439bc7 | 781 | SV *const value = cop_hints_fetch_pvs(c, "open>", 0); |
8b850bd5 NC |
782 | assert(value); |
783 | sv_catsv(sv, value); | |
784 | } | |
785 | } | |
786 | } | |
787 | ||
79072805 | 788 | int |
864dbfa3 | 789 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 790 | { |
27da23d5 | 791 | dVAR; |
79072805 | 792 | register I32 paren; |
db7198b5 | 793 | register const char *s = NULL; |
d9f97599 | 794 | register REGEXP *rx; |
823a54a3 AL |
795 | const char * const remaining = mg->mg_ptr + 1; |
796 | const char nextchar = *remaining; | |
79072805 | 797 | |
7918f24d NC |
798 | PERL_ARGS_ASSERT_MAGIC_GET; |
799 | ||
79072805 | 800 | switch (*mg->mg_ptr) { |
748a9306 | 801 | case '\001': /* ^A */ |
3280af22 | 802 | sv_setsv(sv, PL_bodytarget); |
125b9982 NT |
803 | if (SvTAINTED(PL_bodytarget)) |
804 | SvTAINTED_on(sv); | |
748a9306 | 805 | break; |
e5218da5 | 806 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 807 | if (nextchar == '\0') { |
e5218da5 GA |
808 | sv_setiv(sv, (IV)PL_minus_c); |
809 | } | |
823a54a3 | 810 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
811 | sv_setiv(sv, (IV)STATUS_NATIVE); |
812 | } | |
49460fe6 NIS |
813 | break; |
814 | ||
79072805 | 815 | case '\004': /* ^D */ |
aea4f609 | 816 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 817 | break; |
28f23441 | 818 | case '\005': /* ^E */ |
823a54a3 | 819 | if (nextchar == '\0') { |
e37778c2 | 820 | #if defined(VMS) |
0a378802 JH |
821 | { |
822 | # include <descrip.h> | |
823 | # include <starlet.h> | |
824 | char msg[255]; | |
825 | $DESCRIPTOR(msgdsc,msg); | |
826 | sv_setnv(sv,(NV) vaxc$errno); | |
827 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
828 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
829 | else | |
76f68e9b | 830 | sv_setpvs(sv,""); |
0a378802 | 831 | } |
4b645107 | 832 | #elif defined(OS2) |
0a378802 JH |
833 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
834 | sv_setnv(sv, (NV)errno); | |
835 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
836 | } else { | |
837 | if (errno != errno_isOS2) { | |
823a54a3 | 838 | const int tmp = _syserrno(); |
0a378802 JH |
839 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
840 | Perl_rc = tmp; | |
841 | } | |
842 | sv_setnv(sv, (NV)Perl_rc); | |
843 | sv_setpv(sv, os2error(Perl_rc)); | |
844 | } | |
4b645107 | 845 | #elif defined(WIN32) |
0a378802 | 846 | { |
d4c19fe8 | 847 | const DWORD dwErr = GetLastError(); |
0a378802 | 848 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 849 | if (dwErr) { |
0a378802 JH |
850 | PerlProc_GetOSError(sv, dwErr); |
851 | } | |
852 | else | |
76f68e9b | 853 | sv_setpvs(sv, ""); |
0a378802 JH |
854 | SetLastError(dwErr); |
855 | } | |
22fae026 | 856 | #else |
f6c8f21d | 857 | { |
4ee39169 | 858 | dSAVE_ERRNO; |
f6c8f21d | 859 | sv_setnv(sv, (NV)errno); |
666ea192 | 860 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 861 | RESTORE_ERRNO; |
f6c8f21d | 862 | } |
28f23441 | 863 | #endif |
ad3296c6 | 864 | SvRTRIM(sv); |
0a378802 JH |
865 | SvNOK_on(sv); /* what a wonderful hack! */ |
866 | } | |
823a54a3 | 867 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
868 | sv_setsv(sv, PL_encoding); |
869 | break; | |
79072805 | 870 | case '\006': /* ^F */ |
3280af22 | 871 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 872 | break; |
9ebf26ad FR |
873 | case '\007': /* ^GLOBAL_PHASE */ |
874 | if (strEQ(remaining, "LOBAL_PHASE")) { | |
875 | sv_setpvn(sv, PL_phase_names[PL_phase], | |
876 | strlen(PL_phase_names[PL_phase])); | |
877 | } | |
878 | break; | |
a0d0e21e | 879 | case '\010': /* ^H */ |
3280af22 | 880 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 881 | break; |
9d116dd7 | 882 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 883 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 884 | break; |
ac27b0f5 | 885 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 886 | if (nextchar == '\0') { |
ac27b0f5 | 887 | sv_setpv(sv, PL_osname); |
3511154c DM |
888 | SvTAINTED_off(sv); |
889 | } | |
823a54a3 | 890 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 891 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 892 | } |
28f23441 | 893 | break; |
9ebf26ad | 894 | case '\020': |
cde0cee5 YO |
895 | if (nextchar == '\0') { /* ^P */ |
896 | sv_setiv(sv, (IV)PL_perldb); | |
897 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
898 | goto do_prematch_fetch; | |
899 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
900 | goto do_postmatch_fetch; | |
901 | } | |
79072805 | 902 | break; |
fb73857a | 903 | case '\023': /* ^S */ |
823a54a3 | 904 | if (nextchar == '\0') { |
bc177e6b | 905 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 906 | SvOK_off(sv); |
3280af22 | 907 | else if (PL_in_eval) |
6dc8a9e4 | 908 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
909 | else |
910 | sv_setiv(sv, 0); | |
d58bf5aa | 911 | } |
fb73857a | 912 | break; |
79072805 | 913 | case '\024': /* ^T */ |
823a54a3 | 914 | if (nextchar == '\0') { |
88e89b8a | 915 | #ifdef BIG_TIME |
7c36658b | 916 | sv_setnv(sv, PL_basetime); |
88e89b8a | 917 | #else |
7c36658b | 918 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 919 | #endif |
7c36658b | 920 | } |
823a54a3 | 921 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
922 | sv_setiv(sv, PL_tainting |
923 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
924 | : 0); | |
7c36658b | 925 | break; |
e07ea26a | 926 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 927 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 928 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 929 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 930 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
931 | else if (strEQ(remaining, "TF8CACHE")) |
932 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
933 | break; |
934 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 935 | if (nextchar == '\0') |
4438c4b7 | 936 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 937 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 938 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 939 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
940 | } |
941 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
666ea192 JH |
942 | sv_setpvn( |
943 | sv, | |
944 | (PL_dowarn & G_WARN_ON) ? WARN_ALLstring : WARN_NONEstring, | |
945 | WARNsize | |
946 | ); | |
013b78e8 | 947 | } |
d3a7d8c7 | 948 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
949 | /* Get the bit mask for $warnings::Bits{all}, because |
950 | * it could have been extended by warnings::register */ | |
6673a63c | 951 | HV * const bits=get_hv("warnings::Bits", 0); |
f5a63d97 AL |
952 | if (bits) { |
953 | SV ** const bits_all = hv_fetchs(bits, "all", FALSE); | |
954 | if (bits_all) | |
955 | sv_setsv(sv, *bits_all); | |
75b6c4ca RGS |
956 | } |
957 | else { | |
958 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
959 | } | |
ac27b0f5 | 960 | } |
4438c4b7 | 961 | else { |
72dc9ed5 NC |
962 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
963 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 964 | } |
d3a7d8c7 | 965 | SvPOK_only(sv); |
4438c4b7 | 966 | } |
79072805 | 967 | break; |
cde0cee5 YO |
968 | case '\015': /* $^MATCH */ |
969 | if (strEQ(remaining, "ATCH")) { | |
79072805 LW |
970 | case '1': case '2': case '3': case '4': |
971 | case '5': case '6': case '7': case '8': case '9': case '&': | |
cde0cee5 YO |
972 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
973 | /* | |
159b6efe | 974 | * Pre-threads, this was paren = atoi(GvENAME((const GV *)mg->mg_obj)); |
cde0cee5 YO |
975 | * XXX Does the new way break anything? |
976 | */ | |
977 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
2fdbfb4d | 978 | CALLREG_NUMBUF_FETCH(rx,paren,sv); |
cde0cee5 YO |
979 | break; |
980 | } | |
981 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
982 | } |
983 | break; | |
984 | case '+': | |
aaa362c4 | 985 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f NC |
986 | if (RX_LASTPAREN(rx)) { |
987 | CALLREG_NUMBUF_FETCH(rx,RX_LASTPAREN(rx),sv); | |
44a2ac75 YO |
988 | break; |
989 | } | |
79072805 | 990 | } |
3280af22 | 991 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 992 | break; |
a01268b5 JH |
993 | case '\016': /* ^N */ |
994 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f NC |
995 | if (RX_LASTCLOSEPAREN(rx)) { |
996 | CALLREG_NUMBUF_FETCH(rx,RX_LASTCLOSEPAREN(rx),sv); | |
44a2ac75 YO |
997 | break; |
998 | } | |
999 | ||
a01268b5 JH |
1000 | } |
1001 | sv_setsv(sv,&PL_sv_undef); | |
1002 | break; | |
79072805 | 1003 | case '`': |
cde0cee5 | 1004 | do_prematch_fetch: |
aaa362c4 | 1005 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 1006 | CALLREG_NUMBUF_FETCH(rx,-2,sv); |
93b32b6d | 1007 | break; |
79072805 | 1008 | } |
3280af22 | 1009 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
1010 | break; |
1011 | case '\'': | |
cde0cee5 | 1012 | do_postmatch_fetch: |
aaa362c4 | 1013 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 1014 | CALLREG_NUMBUF_FETCH(rx,-1,sv); |
93b32b6d | 1015 | break; |
79072805 | 1016 | } |
3280af22 | 1017 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
1018 | break; |
1019 | case '.': | |
3280af22 | 1020 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 1021 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 1022 | } |
79072805 LW |
1023 | break; |
1024 | case '?': | |
809a5acc | 1025 | { |
809a5acc | 1026 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 1027 | #ifdef COMPLEX_STATUS |
41cb7b2b | 1028 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
1029 | LvTARGOFF(sv) = PL_statusvalue; |
1030 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 1031 | #endif |
809a5acc | 1032 | } |
79072805 LW |
1033 | break; |
1034 | case '^': | |
acbe1b9d | 1035 | if (GvIOp(PL_defoutgv)) |
099be4f1 | 1036 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
1037 | if (s) |
1038 | sv_setpv(sv,s); | |
1039 | else { | |
3280af22 | 1040 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 1041 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
1042 | } |
1043 | break; | |
1044 | case '~': | |
acbe1b9d | 1045 | if (GvIOp(PL_defoutgv)) |
0daa599b | 1046 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 1047 | if (!s) |
3280af22 | 1048 | s = GvENAME(PL_defoutgv); |
79072805 LW |
1049 | sv_setpv(sv,s); |
1050 | break; | |
79072805 | 1051 | case '=': |
099be4f1 | 1052 | if (GvIO(PL_defoutgv)) |
0daa599b | 1053 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
1054 | break; |
1055 | case '-': | |
099be4f1 | 1056 | if (GvIO(PL_defoutgv)) |
0daa599b | 1057 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
1058 | break; |
1059 | case '%': | |
099be4f1 | 1060 | if (GvIO(PL_defoutgv)) |
0daa599b | 1061 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 | 1062 | break; |
79072805 LW |
1063 | case ':': |
1064 | break; | |
1065 | case '/': | |
1066 | break; | |
1067 | case '[': | |
e1dccc0d | 1068 | sv_setiv(sv, 0); |
79072805 LW |
1069 | break; |
1070 | case '|': | |
099be4f1 | 1071 | if (GvIO(PL_defoutgv)) |
0daa599b | 1072 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 | 1073 | break; |
79072805 | 1074 | case '\\': |
b2ce0fda | 1075 | if (PL_ors_sv) |
f28098ff | 1076 | sv_copypv(sv, PL_ors_sv); |
79072805 | 1077 | break; |
0e219455 | 1078 | case '$': /* $$ */ |
9cdac2a2 FC |
1079 | { |
1080 | IV const pid = (IV)PerlProc_getpid(); | |
1081 | if (isGV(mg->mg_obj) || SvIV(mg->mg_obj) != pid) | |
1082 | /* never set manually, or at least not since last fork */ | |
1083 | sv_setiv(sv, pid); | |
1084 | /* else a value has been assigned manually, so do nothing */ | |
1085 | } | |
0e219455 MM |
1086 | break; |
1087 | ||
79072805 | 1088 | case '!': |
666d8aa2 CB |
1089 | { |
1090 | dSAVE_ERRNO; | |
a5f75d66 | 1091 | #ifdef VMS |
65202027 | 1092 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
a5f75d66 | 1093 | #else |
65202027 | 1094 | sv_setnv(sv, (NV)errno); |
666d8aa2 | 1095 | #endif |
88e89b8a | 1096 | #ifdef OS2 |
ed344e4f IZ |
1097 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
1098 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 1099 | else |
a5f75d66 | 1100 | #endif |
666ea192 | 1101 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
be1cf43c NC |
1102 | if (SvPOKp(sv)) |
1103 | SvPOK_on(sv); /* may have got removed during taint processing */ | |
4ee39169 | 1104 | RESTORE_ERRNO; |
88e89b8a | 1105 | } |
666d8aa2 | 1106 | |
ad3296c6 | 1107 | SvRTRIM(sv); |
946ec16e | 1108 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1109 | break; |
1110 | case '<': | |
3280af22 | 1111 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
1112 | break; |
1113 | case '>': | |
3280af22 | 1114 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
1115 | break; |
1116 | case '(': | |
3280af22 | 1117 | sv_setiv(sv, (IV)PL_gid); |
79072805 LW |
1118 | goto add_groups; |
1119 | case ')': | |
3280af22 | 1120 | sv_setiv(sv, (IV)PL_egid); |
79072805 | 1121 | add_groups: |
79072805 | 1122 | #ifdef HAS_GETGROUPS |
79072805 | 1123 | { |
57d7c65e | 1124 | Groups_t *gary = NULL; |
fb45abb2 | 1125 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1126 | Newx(gary, num_groups, Groups_t); |
1127 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1128 | for (i = 0; i < num_groups; i++) |
1129 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1130 | Safefree(gary); |
79072805 | 1131 | } |
155aba94 | 1132 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1133 | #endif |
79072805 | 1134 | break; |
79072805 LW |
1135 | case '0': |
1136 | break; | |
1137 | } | |
a0d0e21e | 1138 | return 0; |
79072805 LW |
1139 | } |
1140 | ||
1141 | int | |
864dbfa3 | 1142 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1143 | { |
8772537c | 1144 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1145 | |
7918f24d NC |
1146 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1147 | ||
79072805 | 1148 | if (uf && uf->uf_val) |
24f81a43 | 1149 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1150 | return 0; |
1151 | } | |
1152 | ||
1153 | int | |
864dbfa3 | 1154 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1155 | { |
27da23d5 | 1156 | dVAR; |
9ae3433d | 1157 | STRLEN len = 0, klen; |
666ea192 | 1158 | const char *s = SvOK(sv) ? SvPV_const(sv,len) : ""; |
fabdb6c0 | 1159 | const char * const ptr = MgPV_const(mg,klen); |
88e89b8a | 1160 | my_setenv(ptr, s); |
1e422769 | 1161 | |
7918f24d NC |
1162 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1163 | ||
a0d0e21e LW |
1164 | #ifdef DYNAMIC_ENV_FETCH |
1165 | /* We just undefd an environment var. Is a replacement */ | |
1166 | /* waiting in the wings? */ | |
1167 | if (!len) { | |
fabdb6c0 AL |
1168 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE); |
1169 | if (valp) | |
4ab59fcc | 1170 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1171 | } |
1172 | #endif | |
1e422769 | 1173 | |
39e571d4 | 1174 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1175 | /* And you'll never guess what the dog had */ |
1176 | /* in its mouth... */ | |
3280af22 | 1177 | if (PL_tainting) { |
1e422769 | 1178 | MgTAINTEDDIR_off(mg); |
1179 | #ifdef VMS | |
5aabfad6 | 1180 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
b8ffc8df | 1181 | char pathbuf[256], eltbuf[256], *cp, *elt; |
1e422769 | 1182 | int i = 0, j = 0; |
1183 | ||
6fca0082 | 1184 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1185 | elt = eltbuf; |
1e422769 | 1186 | do { /* DCL$PATH may be a search list */ |
1187 | while (1) { /* as may dev portion of any element */ | |
1188 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1189 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1190 | cando_by_name(S_IWUSR,0,elt) ) { | |
1191 | MgTAINTEDDIR_on(mg); | |
1192 | return 0; | |
1193 | } | |
1194 | } | |
bd61b366 | 1195 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1196 | *cp = '\0'; |
1197 | if (my_trnlnm(elt, eltbuf, j++)) | |
1198 | elt = eltbuf; | |
1199 | else | |
1200 | break; | |
1201 | } | |
1202 | j = 0; | |
1203 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1204 | } | |
1205 | #endif /* VMS */ | |
5aabfad6 | 1206 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
8772537c | 1207 | const char * const strend = s + len; |
463ee0b2 LW |
1208 | |
1209 | while (s < strend) { | |
96827780 | 1210 | char tmpbuf[256]; |
c623ac67 | 1211 | Stat_t st; |
5f74f29c | 1212 | I32 i; |
f5a63d97 AL |
1213 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1214 | const char path_sep = '|'; | |
1215 | #else | |
1216 | const char path_sep = ':'; | |
1217 | #endif | |
96827780 | 1218 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1219 | s, strend, path_sep, &i); |
463ee0b2 | 1220 | s++; |
bb7a0f54 | 1221 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1222 | #ifdef VMS |
1223 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1224 | #else | |
1225 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1226 | #endif | |
c6ed36e1 | 1227 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1228 | MgTAINTEDDIR_on(mg); |
1e422769 | 1229 | return 0; |
1230 | } | |
463ee0b2 | 1231 | } |
79072805 LW |
1232 | } |
1233 | } | |
39e571d4 | 1234 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1235 | |
79072805 LW |
1236 | return 0; |
1237 | } | |
1238 | ||
1239 | int | |
864dbfa3 | 1240 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1241 | { |
7918f24d | 1242 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1243 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1244 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1245 | return 0; |
1246 | } | |
1247 | ||
88e89b8a | 1248 | int |
864dbfa3 | 1249 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1250 | { |
97aff369 | 1251 | dVAR; |
7918f24d | 1252 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1253 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1254 | #if defined(VMS) |
cea2e8a9 | 1255 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1256 | #else |
3280af22 | 1257 | if (PL_localizing) { |
fb73857a | 1258 | HE* entry; |
b0269e46 | 1259 | my_clearenv(); |
85fbaab2 NC |
1260 | hv_iterinit(MUTABLE_HV(sv)); |
1261 | while ((entry = hv_iternext(MUTABLE_HV(sv)))) { | |
fb73857a | 1262 | I32 keylen; |
1263 | my_setenv(hv_iterkey(entry, &keylen), | |
85fbaab2 | 1264 | SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry))); |
fb73857a | 1265 | } |
1266 | } | |
1267 | #endif | |
1268 | return 0; | |
1269 | } | |
1270 | ||
1271 | int | |
864dbfa3 | 1272 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1273 | { |
27da23d5 | 1274 | dVAR; |
7918f24d | 1275 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1276 | PERL_UNUSED_ARG(sv); |
1277 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1278 | #if defined(VMS) |
1279 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1280 | #else | |
1281 | my_clearenv(); | |
1282 | #endif | |
3e3baf6d | 1283 | return 0; |
66b1d557 HM |
1284 | } |
1285 | ||
64ca3a65 | 1286 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1287 | #ifdef HAS_SIGPROCMASK |
1288 | static void | |
1289 | restore_sigmask(pTHX_ SV *save_sv) | |
1290 | { | |
0bd48802 | 1291 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1292 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1293 | } |
1294 | #endif | |
66b1d557 | 1295 | int |
864dbfa3 | 1296 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1297 | { |
97aff369 | 1298 | dVAR; |
88e89b8a | 1299 | /* Are we fetching a signal entry? */ |
708854f2 | 1300 | int i = (I16)mg->mg_private; |
7918f24d NC |
1301 | |
1302 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1303 | ||
708854f2 NC |
1304 | if (!i) { |
1305 | mg->mg_private = i = whichsig(MgPV_nolen_const(mg)); | |
1306 | } | |
1307 | ||
e02bfb16 | 1308 | if (i > 0) { |
22c35a8c GS |
1309 | if(PL_psig_ptr[i]) |
1310 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1311 | else { |
46da273f | 1312 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1313 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1314 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1315 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1316 | #endif |
1317 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1318 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1319 | sigstate = SIG_DFL; | |
85b332e2 | 1320 | #endif |
88e89b8a | 1321 | /* cache state so we don't fetch it again */ |
8aad04aa | 1322 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1323 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1324 | else |
3280af22 | 1325 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1326 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1327 | SvTEMP_off(sv); |
1328 | } | |
1329 | } | |
1330 | return 0; | |
1331 | } | |
1332 | int | |
864dbfa3 | 1333 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1334 | { |
7918f24d | 1335 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
179c85a2 | 1336 | |
38a124f0 | 1337 | magic_setsig(NULL, mg); |
179c85a2 | 1338 | return sv_unmagic(sv, mg->mg_type); |
88e89b8a | 1339 | } |
3d37d572 | 1340 | |
0a8e0eff | 1341 | Signal_t |
8aad04aa | 1342 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1343 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1344 | #else |
0a8e0eff | 1345 | Perl_csighandler(int sig) |
8aad04aa | 1346 | #endif |
0a8e0eff | 1347 | { |
1018e26f NIS |
1348 | #ifdef PERL_GET_SIG_CONTEXT |
1349 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1350 | #else | |
85b332e2 CL |
1351 | dTHX; |
1352 | #endif | |
23ada85b | 1353 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1354 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1355 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1356 | #endif |
2e34cc90 | 1357 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1358 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1359 | #ifdef KILL_BY_SIGPRC |
1360 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1361 | #else | |
1362 | exit(1); | |
1363 | #endif | |
1364 | #endif | |
406878dd | 1365 | if ( |
853d2c32 RGS |
1366 | #ifdef SIGILL |
1367 | sig == SIGILL || | |
1368 | #endif | |
1369 | #ifdef SIGBUS | |
1370 | sig == SIGBUS || | |
1371 | #endif | |
1372 | #ifdef SIGSEGV | |
1373 | sig == SIGSEGV || | |
1374 | #endif | |
1375 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 | 1376 | /* Call the perl level handler now-- |
31c91b43 | 1377 | * with risk we may be in malloc() or being destructed etc. */ |
6e324d09 | 1378 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1379 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1380 | #else |
1381 | (*PL_sighandlerp)(sig); | |
92807b6d | 1382 | #endif |
406878dd | 1383 | else { |
31c91b43 | 1384 | if (!PL_psig_pend) return; |
406878dd GA |
1385 | /* Set a flag to say this signal is pending, that is awaiting delivery after |
1386 | * the current Perl opcode completes */ | |
1387 | PL_psig_pend[sig]++; | |
1388 | ||
1389 | #ifndef SIG_PENDING_DIE_COUNT | |
1390 | # define SIG_PENDING_DIE_COUNT 120 | |
1391 | #endif | |
fe13d51d | 1392 | /* Add one to say _a_ signal is pending */ |
406878dd GA |
1393 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1394 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1395 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
1396 | } | |
0a8e0eff NIS |
1397 | } |
1398 | ||
2e34cc90 CL |
1399 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1400 | void | |
1401 | Perl_csighandler_init(void) | |
1402 | { | |
1403 | int sig; | |
27da23d5 | 1404 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1405 | |
1406 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1407 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1408 | dTHX; |
27da23d5 | 1409 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1410 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1411 | #endif |
1412 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1413 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1414 | #endif |
1415 | } | |
27da23d5 | 1416 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1417 | } |
1418 | #endif | |
1419 | ||
7fe50b8b LT |
1420 | #if defined HAS_SIGPROCMASK |
1421 | static void | |
1422 | unblock_sigmask(pTHX_ void* newset) | |
1423 | { | |
1424 | sigprocmask(SIG_UNBLOCK, (sigset_t*)newset, NULL); | |
1425 | } | |
1426 | #endif | |
1427 | ||
0a8e0eff NIS |
1428 | void |
1429 | Perl_despatch_signals(pTHX) | |
1430 | { | |
97aff369 | 1431 | dVAR; |
0a8e0eff NIS |
1432 | int sig; |
1433 | PL_sig_pending = 0; | |
1434 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1435 | if (PL_psig_pend[sig]) { | |
d0166017 | 1436 | dSAVE_ERRNO; |
7fe50b8b | 1437 | #ifdef HAS_SIGPROCMASK |
55534442 LT |
1438 | /* From sigaction(2) (FreeBSD man page): |
1439 | * | Signal routines normally execute with the signal that | |
1440 | * | caused their invocation blocked, but other signals may | |
1441 | * | yet occur. | |
1442 | * Emulation of this behavior (from within Perl) is enabled | |
1443 | * using sigprocmask | |
1444 | */ | |
1445 | int was_blocked; | |
1446 | sigset_t newset, oldset; | |
1447 | ||
1448 | sigemptyset(&newset); | |
1449 | sigaddset(&newset, sig); | |
1450 | sigprocmask(SIG_BLOCK, &newset, &oldset); | |
1451 | was_blocked = sigismember(&oldset, sig); | |
7fe50b8b LT |
1452 | if (!was_blocked) { |
1453 | SV* save_sv = newSVpvn((char *)(&newset), sizeof(sigset_t)); | |
1454 | ENTER; | |
1455 | SAVEFREESV(save_sv); | |
1456 | SAVEDESTRUCTOR_X(unblock_sigmask, SvPV_nolen(save_sv)); | |
1457 | } | |
55534442 | 1458 | #endif |
25da4428 | 1459 | PL_psig_pend[sig] = 0; |
6e324d09 | 1460 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1461 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1462 | #else |
1463 | (*PL_sighandlerp)(sig); | |
92807b6d | 1464 | #endif |
7fe50b8b | 1465 | #ifdef HAS_SIGPROCMASK |
55534442 | 1466 | if (!was_blocked) |
7fe50b8b | 1467 | LEAVE; |
55534442 | 1468 | #endif |
d0166017 | 1469 | RESTORE_ERRNO; |
0a8e0eff NIS |
1470 | } |
1471 | } | |
1472 | } | |
1473 | ||
38a124f0 | 1474 | /* sv of NULL signifies that we're acting as magic_clearsig. */ |
85e6fe83 | 1475 | int |
864dbfa3 | 1476 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1477 | { |
27da23d5 | 1478 | dVAR; |
79072805 | 1479 | I32 i; |
cbbf8932 | 1480 | SV** svp = NULL; |
2d4fcd5e AJ |
1481 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1482 | * effects (due to closures). We must make sure that the new disposition | |
1483 | * is in place before it is called. | |
1484 | */ | |
cbbf8932 | 1485 | SV* to_dec = NULL; |
e72dc28c | 1486 | STRLEN len; |
2d4fcd5e AJ |
1487 | #ifdef HAS_SIGPROCMASK |
1488 | sigset_t set, save; | |
1489 | SV* save_sv; | |
1490 | #endif | |
d5263905 | 1491 | register const char *s = MgPV_const(mg,len); |
7918f24d NC |
1492 | |
1493 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1494 | ||
748a9306 LW |
1495 | if (*s == '_') { |
1496 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1497 | svp = &PL_diehook; |
38a124f0 NC |
1498 | else if (strEQ(s,"__WARN__") |
1499 | && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) { | |
1500 | /* Merge the existing behaviours, which are as follows: | |
1501 | magic_setsig, we always set svp to &PL_warnhook | |
1502 | (hence we always change the warnings handler) | |
1503 | For magic_clearsig, we don't change the warnings handler if it's | |
1504 | set to the &PL_warnhook. */ | |
3280af22 | 1505 | svp = &PL_warnhook; |
38a124f0 | 1506 | } else if (sv) |
cea2e8a9 | 1507 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1508 | i = 0; |
38a124f0 | 1509 | if (svp && *svp) { |
9289f461 RGS |
1510 | if (*svp != PERL_WARNHOOK_FATAL) |
1511 | to_dec = *svp; | |
cbbf8932 | 1512 | *svp = NULL; |
4633a7c4 | 1513 | } |
748a9306 LW |
1514 | } |
1515 | else { | |
708854f2 NC |
1516 | i = (I16)mg->mg_private; |
1517 | if (!i) { | |
58a26b12 NC |
1518 | i = whichsig(s); /* ...no, a brick */ |
1519 | mg->mg_private = (U16)i; | |
708854f2 | 1520 | } |
86d86cad | 1521 | if (i <= 0) { |
a2a5de95 NC |
1522 | if (sv) |
1523 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); | |
748a9306 LW |
1524 | return 0; |
1525 | } | |
2d4fcd5e AJ |
1526 | #ifdef HAS_SIGPROCMASK |
1527 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1528 | sigemptyset(&set); | |
1529 | sigaddset(&set,i); | |
1530 | sigprocmask(SIG_BLOCK, &set, &save); | |
1531 | ENTER; | |
9ff8e806 | 1532 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1533 | SAVEFREESV(save_sv); |
1534 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1535 | #endif | |
1536 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1537 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1538 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1539 | #endif |
23ada85b | 1540 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1541 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1542 | #endif |
2e34cc90 | 1543 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1544 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1545 | #endif |
2d4fcd5e | 1546 | to_dec = PL_psig_ptr[i]; |
38a124f0 NC |
1547 | if (sv) { |
1548 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); | |
1549 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ | |
79fd3822 NC |
1550 | |
1551 | /* Signals don't change name during the program's execution, so once | |
1552 | they're cached in the appropriate slot of PL_psig_name, they can | |
1553 | stay there. | |
1554 | ||
1555 | Ideally we'd find some way of making SVs at (C) compile time, or | |
1556 | at least, doing most of the work. */ | |
1557 | if (!PL_psig_name[i]) { | |
1558 | PL_psig_name[i] = newSVpvn(s, len); | |
1559 | SvREADONLY_on(PL_psig_name[i]); | |
1560 | } | |
38a124f0 | 1561 | } else { |
79fd3822 | 1562 | SvREFCNT_dec(PL_psig_name[i]); |
38a124f0 NC |
1563 | PL_psig_name[i] = NULL; |
1564 | PL_psig_ptr[i] = NULL; | |
1565 | } | |
748a9306 | 1566 | } |
38a124f0 | 1567 | if (sv && (isGV_with_GP(sv) || SvROK(sv))) { |
2d4fcd5e | 1568 | if (i) { |
5c1546dc | 1569 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1570 | } |
748a9306 | 1571 | else |
b37c2d43 | 1572 | *svp = SvREFCNT_inc_simple_NN(sv); |
38a124f0 | 1573 | } else { |
9dfa190b NC |
1574 | if (sv && SvOK(sv)) { |
1575 | s = SvPV_force(sv, len); | |
1576 | } else { | |
1577 | sv = NULL; | |
1578 | } | |
1579 | if (sv && strEQ(s,"IGNORE")) { | |
1580 | if (i) { | |
23ada85b | 1581 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
9dfa190b NC |
1582 | PL_sig_ignoring[i] = 1; |
1583 | (void)rsignal(i, PL_csighandlerp); | |
85b332e2 | 1584 | #else |
9dfa190b | 1585 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1586 | #endif |
9dfa190b | 1587 | } |
2d4fcd5e | 1588 | } |
9dfa190b NC |
1589 | else if (!sv || strEQ(s,"DEFAULT") || !len) { |
1590 | if (i) { | |
2e34cc90 | 1591 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
9dfa190b NC |
1592 | PL_sig_defaulting[i] = 1; |
1593 | (void)rsignal(i, PL_csighandlerp); | |
2e34cc90 | 1594 | #else |
9dfa190b | 1595 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1596 | #endif |
9dfa190b NC |
1597 | } |
1598 | } | |
1599 | else { | |
1600 | /* | |
1601 | * We should warn if HINT_STRICT_REFS, but without | |
1602 | * access to a known hint bit in a known OP, we can't | |
1603 | * tell whether HINT_STRICT_REFS is in force or not. | |
1604 | */ | |
1605 | if (!strchr(s,':') && !strchr(s,'\'')) | |
1606 | Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"), | |
1607 | SV_GMAGIC); | |
1608 | if (i) | |
1609 | (void)rsignal(i, PL_csighandlerp); | |
1610 | else | |
1611 | *svp = SvREFCNT_inc_simple_NN(sv); | |
136e0459 | 1612 | } |
748a9306 | 1613 | } |
9dfa190b | 1614 | |
2d4fcd5e AJ |
1615 | #ifdef HAS_SIGPROCMASK |
1616 | if(i) | |
1617 | LEAVE; | |
1618 | #endif | |
ef8d46e8 | 1619 | SvREFCNT_dec(to_dec); |
79072805 LW |
1620 | return 0; |
1621 | } | |
64ca3a65 | 1622 | #endif /* !PERL_MICRO */ |
79072805 LW |
1623 | |
1624 | int | |
864dbfa3 | 1625 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1626 | { |
97aff369 | 1627 | dVAR; |
7918f24d | 1628 | PERL_ARGS_ASSERT_MAGIC_SETISA; |
8772537c | 1629 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1630 | |
89c14e2e | 1631 | /* Skip _isaelem because _isa will handle it shortly */ |
354b0578 | 1632 | if (PL_delaymagic & DM_ARRAY_ISA && mg->mg_type == PERL_MAGIC_isaelem) |
89c14e2e BB |
1633 | return 0; |
1634 | ||
0e446081 | 1635 | return magic_clearisa(NULL, mg); |
463ee0b2 LW |
1636 | } |
1637 | ||
0e446081 | 1638 | /* sv of NULL signifies that we're acting as magic_setisa. */ |
463ee0b2 | 1639 | int |
52b45067 RD |
1640 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1641 | { | |
1642 | dVAR; | |
1643 | HV* stash; | |
1644 | ||
7918f24d NC |
1645 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1646 | ||
52b45067 | 1647 | /* Bail out if destruction is going on */ |
627364f1 | 1648 | if(PL_phase == PERL_PHASE_DESTRUCT) return 0; |
52b45067 | 1649 | |
0e446081 NC |
1650 | if (sv) |
1651 | av_clear(MUTABLE_AV(sv)); | |
52b45067 | 1652 | |
6624142a FC |
1653 | if (SvTYPE(mg->mg_obj) != SVt_PVGV && SvSMAGICAL(mg->mg_obj)) |
1654 | /* This occurs with setisa_elem magic, which calls this | |
1655 | same function. */ | |
1656 | mg = mg_find(mg->mg_obj, PERL_MAGIC_isa); | |
1657 | ||
1658 | if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */ | |
1659 | SV **svp = AvARRAY((AV *)mg->mg_obj); | |
1660 | I32 items = AvFILLp((AV *)mg->mg_obj) + 1; | |
1661 | while (items--) { | |
1662 | stash = GvSTASH((GV *)*svp++); | |
1663 | if (stash && HvENAME(stash)) mro_isa_changed_in(stash); | |
1664 | } | |
1665 | ||
1666 | return 0; | |
1667 | } | |
1668 | ||
52b45067 | 1669 | stash = GvSTASH( |
6624142a | 1670 | (const GV *)mg->mg_obj |
52b45067 RD |
1671 | ); |
1672 | ||
00169e2c FC |
1673 | /* The stash may have been detached from the symbol table, so check its |
1674 | name before doing anything. */ | |
1675 | if (stash && HvENAME_get(stash)) | |
5562fa71 | 1676 | mro_isa_changed_in(stash); |
52b45067 RD |
1677 | |
1678 | return 0; | |
1679 | } | |
1680 | ||
1681 | int | |
864dbfa3 | 1682 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1683 | { |
97aff369 | 1684 | dVAR; |
7918f24d | 1685 | PERL_ARGS_ASSERT_MAGIC_SETAMAGIC; |
8772537c AL |
1686 | PERL_UNUSED_ARG(sv); |
1687 | PERL_UNUSED_ARG(mg); | |
3280af22 | 1688 | PL_amagic_generation++; |
463ee0b2 | 1689 | |
a0d0e21e LW |
1690 | return 0; |
1691 | } | |
463ee0b2 | 1692 | |
946ec16e | 1693 | int |
864dbfa3 | 1694 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1695 | { |
85fbaab2 | 1696 | HV * const hv = MUTABLE_HV(LvTARG(sv)); |
6ff81951 | 1697 | I32 i = 0; |
7918f24d NC |
1698 | |
1699 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1700 | PERL_UNUSED_ARG(mg); |
7719e241 | 1701 | |
6ff81951 | 1702 | if (hv) { |
497b47a8 | 1703 | (void) hv_iterinit(hv); |
ad64d0ec | 1704 | if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
1b95d04f | 1705 | i = HvUSEDKEYS(hv); |
497b47a8 JH |
1706 | else { |
1707 | while (hv_iternext(hv)) | |
1708 | i++; | |
1709 | } | |
6ff81951 GS |
1710 | } |
1711 | ||
1712 | sv_setiv(sv, (IV)i); | |
1713 | return 0; | |
1714 | } | |
1715 | ||
1716 | int | |
864dbfa3 | 1717 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1718 | { |
7918f24d | 1719 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1720 | PERL_UNUSED_ARG(mg); |
946ec16e | 1721 | if (LvTARG(sv)) { |
85fbaab2 | 1722 | hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv)); |
946ec16e | 1723 | } |
1724 | return 0; | |
ac27b0f5 | 1725 | } |
946ec16e | 1726 | |
efaf3674 DM |
1727 | /* |
1728 | =for apidoc magic_methcall | |
1729 | ||
1730 | Invoke a magic method (like FETCH). | |
1731 | ||
2baee27b FC |
1732 | C<sv> and C<mg> are the tied thingy and the tie magic. |
1733 | ||
1734 | C<meth> is the name of the method to call. | |
1735 | ||
1736 | C<argc> is the number of args (in addition to $self) to pass to the method. | |
1737 | ||
1738 | The C<flags> can be: | |
1739 | ||
1740 | G_DISCARD invoke method with G_DISCARD flag and don't | |
1741 | return a value | |
1742 | G_UNDEF_FILL fill the stack with argc pointers to | |
1743 | PL_sv_undef | |
1744 | ||
1745 | The arguments themselves are any values following the C<flags> argument. | |
efaf3674 DM |
1746 | |
1747 | Returns the SV (if any) returned by the method, or NULL on failure. | |
1748 | ||
1749 | ||
1750 | =cut | |
1751 | */ | |
1752 | ||
1753 | SV* | |
c7a0c747 | 1754 | Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
046b0c7d | 1755 | U32 argc, ...) |
a0d0e21e | 1756 | { |
97aff369 | 1757 | dVAR; |
a0d0e21e | 1758 | dSP; |
efaf3674 | 1759 | SV* ret = NULL; |
463ee0b2 | 1760 | |
7918f24d NC |
1761 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1762 | ||
efaf3674 | 1763 | ENTER; |
d1d7a15d NC |
1764 | |
1765 | if (flags & G_WRITING_TO_STDERR) { | |
1766 | SAVETMPS; | |
1767 | ||
1768 | save_re_context(); | |
1769 | SAVESPTR(PL_stderrgv); | |
1770 | PL_stderrgv = NULL; | |
1771 | } | |
1772 | ||
efaf3674 | 1773 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1774 | PUSHMARK(SP); |
efaf3674 | 1775 | |
67549bd2 NC |
1776 | EXTEND(SP, argc+1); |
1777 | PUSHs(SvTIED_obj(sv, mg)); | |
1778 | if (flags & G_UNDEF_FILL) { | |
1779 | while (argc--) { | |
efaf3674 | 1780 | PUSHs(&PL_sv_undef); |
93965878 | 1781 | } |
67549bd2 | 1782 | } else if (argc > 0) { |
046b0c7d NC |
1783 | va_list args; |
1784 | va_start(args, argc); | |
1785 | ||
1786 | do { | |
1787 | SV *const sv = va_arg(args, SV *); | |
1788 | PUSHs(sv); | |
1789 | } while (--argc); | |
1790 | ||
1791 | va_end(args); | |
88e89b8a | 1792 | } |
463ee0b2 | 1793 | PUTBACK; |
efaf3674 DM |
1794 | if (flags & G_DISCARD) { |
1795 | call_method(meth, G_SCALAR|G_DISCARD); | |
1796 | } | |
1797 | else { | |
1798 | if (call_method(meth, G_SCALAR)) | |
1799 | ret = *PL_stack_sp--; | |
1800 | } | |
1801 | POPSTACK; | |
d1d7a15d NC |
1802 | if (flags & G_WRITING_TO_STDERR) |
1803 | FREETMPS; | |
efaf3674 DM |
1804 | LEAVE; |
1805 | return ret; | |
1806 | } | |
1807 | ||
1808 | ||
1809 | /* wrapper for magic_methcall that creates the first arg */ | |
463ee0b2 | 1810 | |
efaf3674 | 1811 | STATIC SV* |
c7a0c747 | 1812 | S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
efaf3674 DM |
1813 | int n, SV *val) |
1814 | { | |
1815 | dVAR; | |
1816 | SV* arg1 = NULL; | |
1817 | ||
1818 | PERL_ARGS_ASSERT_MAGIC_METHCALL1; | |
1819 | ||
1820 | if (mg->mg_ptr) { | |
1821 | if (mg->mg_len >= 0) { | |
db4b3a1d | 1822 | arg1 = newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
efaf3674 DM |
1823 | } |
1824 | else if (mg->mg_len == HEf_SVKEY) | |
1825 | arg1 = MUTABLE_SV(mg->mg_ptr); | |
1826 | } | |
1827 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { | |
db4b3a1d | 1828 | arg1 = newSViv((IV)(mg->mg_len)); |
efaf3674 DM |
1829 | sv_2mortal(arg1); |
1830 | } | |
1831 | if (!arg1) { | |
046b0c7d | 1832 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n - 1, val); |
efaf3674 | 1833 | } |
046b0c7d | 1834 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n, arg1, val); |
946ec16e | 1835 | } |
1836 | ||
76e3520e | 1837 | STATIC int |
e1ec3a88 | 1838 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1839 | { |
efaf3674 DM |
1840 | dVAR; |
1841 | SV* ret; | |
463ee0b2 | 1842 | |
7918f24d NC |
1843 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1844 | ||
efaf3674 DM |
1845 | ret = magic_methcall1(sv, mg, meth, 0, 1, NULL); |
1846 | if (ret) | |
1847 | sv_setsv(sv, ret); | |
a0d0e21e LW |
1848 | return 0; |
1849 | } | |
463ee0b2 | 1850 | |
a0d0e21e | 1851 | int |
864dbfa3 | 1852 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1853 | { |
7918f24d NC |
1854 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1855 | ||
fd69380d | 1856 | if (mg->mg_type == PERL_MAGIC_tiedelem) |
a0d0e21e | 1857 | mg->mg_flags |= MGf_GSKIP; |
58f82c5c | 1858 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1859 | return 0; |
1860 | } | |
1861 | ||
1862 | int | |
864dbfa3 | 1863 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1864 | { |
efaf3674 | 1865 | dVAR; |
b112cff9 DM |
1866 | MAGIC *tmg; |
1867 | SV *val; | |
7918f24d NC |
1868 | |
1869 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1870 | ||
b112cff9 DM |
1871 | /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to |
1872 | * STORE() is not $val, but rather a PVLV (the sv in this call), whose | |
1873 | * public flags indicate its value based on copying from $val. Doing | |
1874 | * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us. | |
1875 | * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes | |
1876 | * wrong if $val happened to be tainted, as sv hasn't got magic | |
1877 | * enabled, even though taint magic is in the chain. In which case, | |
1878 | * fake up a temporary tainted value (this is easier than temporarily | |
1879 | * re-enabling magic on sv). */ | |
1880 | ||
1881 | if (PL_tainting && (tmg = mg_find(sv, PERL_MAGIC_taint)) | |
1882 | && (tmg->mg_len & 1)) | |
1883 | { | |
1884 | val = sv_mortalcopy(sv); | |
1885 | SvTAINTED_on(val); | |
1886 | } | |
1887 | else | |
1888 | val = sv; | |
1889 | ||
efaf3674 | 1890 | magic_methcall1(sv, mg, "STORE", G_DISCARD, 2, val); |
463ee0b2 LW |
1891 | return 0; |
1892 | } | |
1893 | ||
1894 | int | |
864dbfa3 | 1895 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1896 | { |
7918f24d NC |
1897 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1898 | ||
a0d0e21e LW |
1899 | return magic_methpack(sv,mg,"DELETE"); |
1900 | } | |
463ee0b2 | 1901 | |
93965878 NIS |
1902 | |
1903 | U32 | |
864dbfa3 | 1904 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1905 | { |
efaf3674 | 1906 | dVAR; |
22846ab4 | 1907 | I32 retval = 0; |
efaf3674 | 1908 | SV* retsv; |
93965878 | 1909 | |
7918f24d NC |
1910 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1911 | ||
efaf3674 DM |
1912 | retsv = magic_methcall1(sv, mg, "FETCHSIZE", 0, 1, NULL); |
1913 | if (retsv) { | |
1914 | retval = SvIV(retsv)-1; | |
22846ab4 AB |
1915 | if (retval < -1) |
1916 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1917 | } |
22846ab4 | 1918 | return (U32) retval; |
93965878 NIS |
1919 | } |
1920 | ||
cea2e8a9 GS |
1921 | int |
1922 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1923 | { |
efaf3674 | 1924 | dVAR; |
463ee0b2 | 1925 | |
7918f24d NC |
1926 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1927 | ||
046b0c7d | 1928 | Perl_magic_methcall(aTHX_ sv, mg, "CLEAR", G_DISCARD, 0); |
463ee0b2 LW |
1929 | return 0; |
1930 | } | |
1931 | ||
1932 | int | |
864dbfa3 | 1933 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1934 | { |
efaf3674 DM |
1935 | dVAR; |
1936 | SV* ret; | |
463ee0b2 | 1937 | |
7918f24d NC |
1938 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1939 | ||
046b0c7d NC |
1940 | ret = SvOK(key) ? Perl_magic_methcall(aTHX_ sv, mg, "NEXTKEY", 0, 1, key) |
1941 | : Perl_magic_methcall(aTHX_ sv, mg, "FIRSTKEY", 0, 0); | |
efaf3674 DM |
1942 | if (ret) |
1943 | sv_setsv(key,ret); | |
79072805 LW |
1944 | return 0; |
1945 | } | |
1946 | ||
1947 | int | |
1146e912 | 1948 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1949 | { |
7918f24d NC |
1950 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1951 | ||
a0d0e21e | 1952 | return magic_methpack(sv,mg,"EXISTS"); |
ac27b0f5 | 1953 | } |
a0d0e21e | 1954 | |
a3bcc51e TP |
1955 | SV * |
1956 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1957 | { | |
efaf3674 | 1958 | dVAR; |
5fcbf73d | 1959 | SV *retval; |
ad64d0ec NC |
1960 | SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg); |
1961 | HV * const pkg = SvSTASH((const SV *)SvRV(tied)); | |
a3bcc51e | 1962 | |
7918f24d NC |
1963 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
1964 | ||
a3bcc51e TP |
1965 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1966 | SV *key; | |
bfcb3514 | 1967 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1968 | /* we are in an iteration so the hash cannot be empty */ |
1969 | return &PL_sv_yes; | |
1970 | /* no xhv_eiter so now use FIRSTKEY */ | |
1971 | key = sv_newmortal(); | |
ad64d0ec | 1972 | magic_nextpack(MUTABLE_SV(hv), mg, key); |
bfcb3514 | 1973 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1974 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1975 | } | |
1976 | ||
1977 | /* there is a SCALAR method that we can call */ | |
046b0c7d | 1978 | retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(hv), mg, "SCALAR", 0, 0); |
efaf3674 | 1979 | if (!retval) |
5fcbf73d | 1980 | retval = &PL_sv_undef; |
a3bcc51e TP |
1981 | return retval; |
1982 | } | |
1983 | ||
a0d0e21e | 1984 | int |
864dbfa3 | 1985 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1986 | { |
97aff369 | 1987 | dVAR; |
8772537c AL |
1988 | GV * const gv = PL_DBline; |
1989 | const I32 i = SvTRUE(sv); | |
1990 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 1991 | atoi(MgPV_nolen_const(mg)), FALSE); |
7918f24d NC |
1992 | |
1993 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
1994 | ||
8772537c AL |
1995 | if (svp && SvIOKp(*svp)) { |
1996 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
1997 | if (o) { | |
1998 | /* set or clear breakpoint in the relevant control op */ | |
1999 | if (i) | |
2000 | o->op_flags |= OPf_SPECIAL; | |
2001 | else | |
2002 | o->op_flags &= ~OPf_SPECIAL; | |
2003 | } | |
5df8de69 | 2004 | } |
79072805 LW |
2005 | return 0; |
2006 | } | |
2007 | ||
2008 | int | |
8772537c | 2009 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 2010 | { |
97aff369 | 2011 | dVAR; |
502c6561 | 2012 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2013 | |
2014 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
2015 | ||
83bf042f | 2016 | if (obj) { |
e1dccc0d | 2017 | sv_setiv(sv, AvFILL(obj)); |
83bf042f NC |
2018 | } else { |
2019 | SvOK_off(sv); | |
2020 | } | |
79072805 LW |
2021 | return 0; |
2022 | } | |
2023 | ||
2024 | int | |
864dbfa3 | 2025 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2026 | { |
97aff369 | 2027 | dVAR; |
502c6561 | 2028 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2029 | |
2030 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
2031 | ||
83bf042f | 2032 | if (obj) { |
e1dccc0d | 2033 | av_fill(obj, SvIV(sv)); |
83bf042f | 2034 | } else { |
a2a5de95 NC |
2035 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
2036 | "Attempt to set length of freed array"); | |
83bf042f NC |
2037 | } |
2038 | return 0; | |
2039 | } | |
2040 | ||
2041 | int | |
2042 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) | |
2043 | { | |
97aff369 | 2044 | dVAR; |
7918f24d NC |
2045 | |
2046 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; | |
53c1dcc0 | 2047 | PERL_UNUSED_ARG(sv); |
7918f24d | 2048 | |
94f3782b DM |
2049 | /* during global destruction, mg_obj may already have been freed */ |
2050 | if (PL_in_clean_all) | |
1ea47f64 | 2051 | return 0; |
94f3782b | 2052 | |
83bf042f NC |
2053 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
2054 | ||
2055 | if (mg) { | |
2056 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
2057 | reference. Hence the we (the array) are about to go away with it | |
2058 | still pointing at us. Clear its pointer, else it would be pointing | |
2059 | at free memory. See the comment in sv_magic about reference loops, | |
2060 | and why it can't own a reference to us. */ | |
2061 | mg->mg_obj = 0; | |
2062 | } | |
a0d0e21e LW |
2063 | return 0; |
2064 | } | |
2065 | ||
2066 | int | |
864dbfa3 | 2067 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2068 | { |
97aff369 | 2069 | dVAR; |
16eb5365 | 2070 | SV* const lsv = LvTARG(sv); |
7918f24d NC |
2071 | |
2072 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
16eb5365 | 2073 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2074 | |
a0d0e21e | 2075 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
2076 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
2077 | if (found && found->mg_len >= 0) { | |
2078 | I32 i = found->mg_len; | |
7e2040f0 | 2079 | if (DO_UTF8(lsv)) |
a0ed51b3 | 2080 | sv_pos_b2u(lsv, &i); |
e1dccc0d | 2081 | sv_setiv(sv, i); |
a0d0e21e LW |
2082 | return 0; |
2083 | } | |
2084 | } | |
0c34ef67 | 2085 | SvOK_off(sv); |
a0d0e21e LW |
2086 | return 0; |
2087 | } | |
2088 | ||
2089 | int | |
864dbfa3 | 2090 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2091 | { |
97aff369 | 2092 | dVAR; |
16eb5365 | 2093 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
2094 | SSize_t pos; |
2095 | STRLEN len; | |
c00206c8 | 2096 | STRLEN ulen = 0; |
53d44271 | 2097 | MAGIC* found; |
a0d0e21e | 2098 | |
7918f24d | 2099 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
16eb5365 | 2100 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2101 | |
a0d0e21e | 2102 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
2103 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
2104 | else | |
2105 | found = NULL; | |
2106 | if (!found) { | |
a0d0e21e LW |
2107 | if (!SvOK(sv)) |
2108 | return 0; | |
d83f0a82 NC |
2109 | #ifdef PERL_OLD_COPY_ON_WRITE |
2110 | if (SvIsCOW(lsv)) | |
2111 | sv_force_normal_flags(lsv, 0); | |
2112 | #endif | |
3881461a | 2113 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 2114 | NULL, 0); |
a0d0e21e LW |
2115 | } |
2116 | else if (!SvOK(sv)) { | |
3881461a | 2117 | found->mg_len = -1; |
a0d0e21e LW |
2118 | return 0; |
2119 | } | |
2120 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
2121 | ||
e1dccc0d | 2122 | pos = SvIV(sv); |
a0ed51b3 | 2123 | |
7e2040f0 | 2124 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
2125 | ulen = sv_len_utf8(lsv); |
2126 | if (ulen) | |
2127 | len = ulen; | |
a0ed51b3 LW |
2128 | } |
2129 | ||
a0d0e21e LW |
2130 | if (pos < 0) { |
2131 | pos += len; | |
2132 | if (pos < 0) | |
2133 | pos = 0; | |
2134 | } | |
eb160463 | 2135 | else if (pos > (SSize_t)len) |
a0d0e21e | 2136 | pos = len; |
a0ed51b3 LW |
2137 | |
2138 | if (ulen) { | |
2139 | I32 p = pos; | |
2140 | sv_pos_u2b(lsv, &p, 0); | |
2141 | pos = p; | |
2142 | } | |
727405f8 | 2143 | |
3881461a AL |
2144 | found->mg_len = pos; |
2145 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 2146 | |
79072805 LW |
2147 | return 0; |
2148 | } | |
2149 | ||
2150 | int | |
864dbfa3 | 2151 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2152 | { |
2153 | STRLEN len; | |
35a4481c | 2154 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2155 | const char * const tmps = SvPV_const(lsv,len); |
777f7c56 EB |
2156 | STRLEN offs = LvTARGOFF(sv); |
2157 | STRLEN rem = LvTARGLEN(sv); | |
7918f24d NC |
2158 | |
2159 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2160 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2161 | |
9aa983d2 | 2162 | if (SvUTF8(lsv)) |
d931b1be | 2163 | offs = sv_pos_u2b_flags(lsv, offs, &rem, SV_CONST_RETURN); |
777f7c56 | 2164 | if (offs > len) |
6ff81951 | 2165 | offs = len; |
777f7c56 | 2166 | if (rem > len - offs) |
6ff81951 | 2167 | rem = len - offs; |
1c900557 | 2168 | sv_setpvn(sv, tmps + offs, rem); |
9aa983d2 | 2169 | if (SvUTF8(lsv)) |
2ef4b674 | 2170 | SvUTF8_on(sv); |
6ff81951 GS |
2171 | return 0; |
2172 | } | |
2173 | ||
2174 | int | |
864dbfa3 | 2175 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2176 | { |
97aff369 | 2177 | dVAR; |
9aa983d2 | 2178 | STRLEN len; |
5fcbf73d | 2179 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2180 | SV * const lsv = LvTARG(sv); |
777f7c56 EB |
2181 | STRLEN lvoff = LvTARGOFF(sv); |
2182 | STRLEN lvlen = LvTARGLEN(sv); | |
7918f24d NC |
2183 | |
2184 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2185 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2186 | |
1aa99e6b | 2187 | if (DO_UTF8(sv)) { |
9aa983d2 | 2188 | sv_utf8_upgrade(lsv); |
d931b1be | 2189 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
9aa983d2 | 2190 | sv_insert(lsv, lvoff, lvlen, tmps, len); |
b76f3ce2 | 2191 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
2192 | SvUTF8_on(lsv); |
2193 | } | |
9bf12eaf | 2194 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 2195 | const char *utf8; |
d931b1be | 2196 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
b76f3ce2 | 2197 | LvTARGLEN(sv) = len; |
5fcbf73d AL |
2198 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
2199 | sv_insert(lsv, lvoff, lvlen, utf8, len); | |
2200 | Safefree(utf8); | |
1aa99e6b | 2201 | } |
b76f3ce2 GB |
2202 | else { |
2203 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
2204 | LvTARGLEN(sv) = len; | |
2205 | } | |
2206 | ||
79072805 LW |
2207 | return 0; |
2208 | } | |
2209 | ||
2210 | int | |
864dbfa3 | 2211 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2212 | { |
97aff369 | 2213 | dVAR; |
7918f24d NC |
2214 | |
2215 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; | |
8772537c | 2216 | PERL_UNUSED_ARG(sv); |
7918f24d | 2217 | |
27cc343c | 2218 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2219 | return 0; |
2220 | } | |
2221 | ||
2222 | int | |
864dbfa3 | 2223 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2224 | { |
97aff369 | 2225 | dVAR; |
7918f24d NC |
2226 | |
2227 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; | |
8772537c | 2228 | PERL_UNUSED_ARG(sv); |
7918f24d | 2229 | |
b01e650a DM |
2230 | /* update taint status */ |
2231 | if (PL_tainted) | |
2232 | mg->mg_len |= 1; | |
2233 | else | |
2234 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2235 | return 0; |
2236 | } | |
2237 | ||
2238 | int | |
864dbfa3 | 2239 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2240 | { |
35a4481c | 2241 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2242 | |
2243 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2244 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2245 | |
6136c704 AL |
2246 | if (lsv) |
2247 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2248 | else | |
0c34ef67 | 2249 | SvOK_off(sv); |
6ff81951 | 2250 | |
6ff81951 GS |
2251 | return 0; |
2252 | } | |
2253 | ||
2254 | int | |
864dbfa3 | 2255 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2256 | { |
7918f24d | 2257 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2258 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2259 | do_vecset(sv); /* XXX slurp this routine */ |
2260 | return 0; | |
2261 | } | |
2262 | ||
2263 | int | |
864dbfa3 | 2264 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 2265 | { |
97aff369 | 2266 | dVAR; |
a0714e2c | 2267 | SV *targ = NULL; |
7918f24d NC |
2268 | |
2269 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2270 | ||
5f05dabc | 2271 | if (LvTARGLEN(sv)) { |
68dc0745 | 2272 | if (mg->mg_obj) { |
8772537c | 2273 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2274 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0); |
6d822dc4 MS |
2275 | if (he) |
2276 | targ = HeVAL(he); | |
68dc0745 | 2277 | } |
2278 | else { | |
502c6561 | 2279 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
68dc0745 | 2280 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2281 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2282 | } | |
46da273f | 2283 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2284 | /* somebody else defined it for us */ |
2285 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2286 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2287 | LvTARGLEN(sv) = 0; |
2288 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2289 | mg->mg_obj = NULL; |
68dc0745 | 2290 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2291 | } | |
5f05dabc | 2292 | } |
71be2cbc | 2293 | else |
2294 | targ = LvTARG(sv); | |
3280af22 | 2295 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 2296 | return 0; |
2297 | } | |
2298 | ||
2299 | int | |
864dbfa3 | 2300 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2301 | { |
7918f24d | 2302 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2303 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2304 | if (LvTARGLEN(sv)) |
68dc0745 | 2305 | vivify_defelem(sv); |
2306 | if (LvTARG(sv)) { | |
5f05dabc | 2307 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2308 | SvSETMAGIC(LvTARG(sv)); |
2309 | } | |
5f05dabc | 2310 | return 0; |
2311 | } | |
2312 | ||
71be2cbc | 2313 | void |
864dbfa3 | 2314 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2315 | { |
97aff369 | 2316 | dVAR; |
74e13ce4 | 2317 | MAGIC *mg; |
a0714e2c | 2318 | SV *value = NULL; |
71be2cbc | 2319 | |
7918f24d NC |
2320 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2321 | ||
14befaf4 | 2322 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2323 | return; |
68dc0745 | 2324 | if (mg->mg_obj) { |
8772537c | 2325 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2326 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0); |
6d822dc4 MS |
2327 | if (he) |
2328 | value = HeVAL(he); | |
3280af22 | 2329 | if (!value || value == &PL_sv_undef) |
be2597df | 2330 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2331 | } |
68dc0745 | 2332 | else { |
502c6561 | 2333 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
5aabfad6 | 2334 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2335 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2336 | else { |
d4c19fe8 | 2337 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2338 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2339 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2340 | } |
2341 | } | |
b37c2d43 | 2342 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2343 | SvREFCNT_dec(LvTARG(sv)); |
2344 | LvTARG(sv) = value; | |
71be2cbc | 2345 | LvTARGLEN(sv) = 0; |
68dc0745 | 2346 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2347 | mg->mg_obj = NULL; |
68dc0745 | 2348 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2349 | } |
2350 | ||
2351 | int | |
864dbfa3 | 2352 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2353 | { |
7918f24d | 2354 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
5648c0ae DM |
2355 | Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj)); |
2356 | return 0; | |
810b8aa5 GS |
2357 | } |
2358 | ||
2359 | int | |
864dbfa3 | 2360 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2361 | { |
7918f24d | 2362 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2363 | PERL_UNUSED_CONTEXT; |
0177730e | 2364 | PERL_UNUSED_ARG(sv); |
565764a8 | 2365 | mg->mg_len = -1; |
93a17b20 LW |
2366 | return 0; |
2367 | } | |
2368 | ||
2369 | int | |
864dbfa3 | 2370 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2371 | { |
35a4481c | 2372 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2373 | |
7918f24d NC |
2374 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2375 | ||
79072805 | 2376 | if (uf && uf->uf_set) |
24f81a43 | 2377 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2378 | return 0; |
2379 | } | |
2380 | ||
c277df42 | 2381 | int |
faf82a0b AE |
2382 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2383 | { | |
488344d2 | 2384 | const char type = mg->mg_type; |
7918f24d NC |
2385 | |
2386 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2387 | ||
488344d2 NC |
2388 | if (type == PERL_MAGIC_qr) { |
2389 | } else if (type == PERL_MAGIC_bm) { | |
2390 | SvTAIL_off(sv); | |
2391 | SvVALID_off(sv); | |
0177730e NC |
2392 | } else if (type == PERL_MAGIC_study) { |
2393 | if (!isGV_with_GP(sv)) | |
2394 | SvSCREAM_off(sv); | |
488344d2 NC |
2395 | } else { |
2396 | assert(type == PERL_MAGIC_fm); | |
488344d2 NC |
2397 | } |
2398 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2399 | } |
2400 | ||
7a4c00b4 | 2401 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2402 | int |
864dbfa3 | 2403 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2404 | { |
7918f24d NC |
2405 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2406 | ||
bbce6d69 | 2407 | /* |
838b5b74 | 2408 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2409 | * and vanished with a faint plop. |
2410 | */ | |
96a5add6 | 2411 | PERL_UNUSED_CONTEXT; |
8772537c | 2412 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2413 | if (mg->mg_ptr) { |
2414 | Safefree(mg->mg_ptr); | |
2415 | mg->mg_ptr = NULL; | |
565764a8 | 2416 | mg->mg_len = -1; |
7a4c00b4 | 2417 | } |
bbce6d69 | 2418 | return 0; |
2419 | } | |
7a4c00b4 | 2420 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2421 | |
7e8c5dac HS |
2422 | /* Just clear the UTF-8 cache data. */ |
2423 | int | |
2424 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2425 | { | |
7918f24d | 2426 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2427 | PERL_UNUSED_CONTEXT; |
8772537c | 2428 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2429 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2430 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2431 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2432 | return 0; | |
2433 | } | |
2434 | ||
bbce6d69 | 2435 | int |
864dbfa3 | 2436 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2437 | { |
97aff369 | 2438 | dVAR; |
e1ec3a88 | 2439 | register const char *s; |
2fdbfb4d AB |
2440 | register I32 paren; |
2441 | register const REGEXP * rx; | |
2442 | const char * const remaining = mg->mg_ptr + 1; | |
79072805 | 2443 | I32 i; |
8990e307 | 2444 | STRLEN len; |
125b9982 | 2445 | MAGIC *tmg; |
2fdbfb4d | 2446 | |
7918f24d NC |
2447 | PERL_ARGS_ASSERT_MAGIC_SET; |
2448 | ||
79072805 | 2449 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
2450 | case '\015': /* $^MATCH */ |
2451 | if (strEQ(remaining, "ATCH")) | |
2452 | goto do_match; | |
2453 | case '`': /* ${^PREMATCH} caught below */ | |
2454 | do_prematch: | |
f1b875a0 | 2455 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
2456 | goto setparen; |
2457 | case '\'': /* ${^POSTMATCH} caught below */ | |
2458 | do_postmatch: | |
f1b875a0 | 2459 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
2460 | goto setparen; |
2461 | case '&': | |
2462 | do_match: | |
f1b875a0 | 2463 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d AB |
2464 | goto setparen; |
2465 | case '1': case '2': case '3': case '4': | |
2466 | case '5': case '6': case '7': case '8': case '9': | |
104a8018 | 2467 | paren = atoi(mg->mg_ptr); |
2fdbfb4d | 2468 | setparen: |
1e05feb3 | 2469 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 2470 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
1e05feb3 | 2471 | } else { |
2fdbfb4d AB |
2472 | /* Croak with a READONLY error when a numbered match var is |
2473 | * set without a previous pattern match. Unless it's C<local $1> | |
2474 | */ | |
2475 | if (!PL_localizing) { | |
6ad8f254 | 2476 | Perl_croak_no_modify(aTHX); |
2fdbfb4d AB |
2477 | } |
2478 | } | |
9b9e0be4 | 2479 | break; |
748a9306 | 2480 | case '\001': /* ^A */ |
3280af22 | 2481 | sv_setsv(PL_bodytarget, sv); |
64eff8b7 DM |
2482 | FmLINES(PL_bodytarget) = 0; |
2483 | if (SvPOK(PL_bodytarget)) { | |
2484 | char *s = SvPVX(PL_bodytarget); | |
2485 | while ( ((s = strchr(s, '\n'))) ) { | |
2486 | FmLINES(PL_bodytarget)++; | |
2487 | s++; | |
2488 | } | |
2489 | } | |
125b9982 NT |
2490 | /* mg_set() has temporarily made sv non-magical */ |
2491 | if (PL_tainting) { | |
2492 | if ((tmg = mg_find(sv,PERL_MAGIC_taint)) && tmg->mg_len & 1) | |
2493 | SvTAINTED_on(PL_bodytarget); | |
2494 | else | |
2495 | SvTAINTED_off(PL_bodytarget); | |
2496 | } | |
748a9306 | 2497 | break; |
49460fe6 | 2498 | case '\003': /* ^C */ |
f2338a2e | 2499 | PL_minus_c = cBOOL(SvIV(sv)); |
49460fe6 NIS |
2500 | break; |
2501 | ||
79072805 | 2502 | case '\004': /* ^D */ |
b4ab917c | 2503 | #ifdef DEBUGGING |
b83604b4 | 2504 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2505 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
a58fb6f9 CS |
2506 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
2507 | dump_all_perl(!DEBUG_B_TEST); | |
b4ab917c | 2508 | #else |
38ab35f8 | 2509 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2510 | #endif |
79072805 | 2511 | break; |
28f23441 | 2512 | case '\005': /* ^E */ |
d0063567 | 2513 | if (*(mg->mg_ptr+1) == '\0') { |
e37778c2 | 2514 | #ifdef VMS |
38ab35f8 | 2515 | set_vaxc_errno(SvIV(sv)); |
e37778c2 NC |
2516 | #else |
2517 | # ifdef WIN32 | |
d0063567 | 2518 | SetLastError( SvIV(sv) ); |
e37778c2 NC |
2519 | # else |
2520 | # ifdef OS2 | |
38ab35f8 | 2521 | os2_setsyserrno(SvIV(sv)); |
e37778c2 | 2522 | # else |
d0063567 | 2523 | /* will anyone ever use this? */ |
38ab35f8 | 2524 | SETERRNO(SvIV(sv), 4); |
048c1ddf IZ |
2525 | # endif |
2526 | # endif | |
22fae026 | 2527 | #endif |
d0063567 DK |
2528 | } |
2529 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
ef8d46e8 | 2530 | SvREFCNT_dec(PL_encoding); |
d0063567 DK |
2531 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2532 | PL_encoding = newSVsv(sv); | |
2533 | } | |
2534 | else { | |
a0714e2c | 2535 | PL_encoding = NULL; |
d0063567 DK |
2536 | } |
2537 | } | |
2538 | break; | |
79072805 | 2539 | case '\006': /* ^F */ |
38ab35f8 | 2540 | PL_maxsysfd = SvIV(sv); |
79072805 | 2541 | break; |
a0d0e21e | 2542 | case '\010': /* ^H */ |
38ab35f8 | 2543 | PL_hints = SvIV(sv); |
a0d0e21e | 2544 | break; |
9d116dd7 | 2545 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2546 | Safefree(PL_inplace); |
bd61b366 | 2547 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2548 | break; |
28f23441 | 2549 | case '\017': /* ^O */ |
ac27b0f5 | 2550 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2551 | Safefree(PL_osname); |
bd61b366 | 2552 | PL_osname = NULL; |
3511154c DM |
2553 | if (SvOK(sv)) { |
2554 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2555 | PL_osname = savesvpv(sv); |
3511154c | 2556 | } |
ac27b0f5 NIS |
2557 | } |
2558 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2559 | STRLEN len; |
2560 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2561 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 | 2562 | SV *tmp; |
8b850bd5 NC |
2563 | |
2564 | ||
2565 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
f747ebd6 | 2566 | PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; |
8b850bd5 NC |
2567 | |
2568 | /* Opening for input is more common than opening for output, so | |
2569 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 | 2570 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
f747ebd6 Z |
2571 | SvUTF8(sv)) |
2572 | : newSVpvs_flags("", SvUTF8(sv)); | |
2573 | (void)hv_stores(GvHV(PL_hintgv), "open>", tmp); | |
2574 | mg_set(tmp); | |
8b850bd5 | 2575 | |
f747ebd6 Z |
2576 | tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len, |
2577 | SvUTF8(sv)); | |
2578 | (void)hv_stores(GvHV(PL_hintgv), "open<", tmp); | |
2579 | mg_set(tmp); | |
ac27b0f5 | 2580 | } |
28f23441 | 2581 | break; |
79072805 | 2582 | case '\020': /* ^P */ |
2fdbfb4d AB |
2583 | if (*remaining == '\0') { /* ^P */ |
2584 | PL_perldb = SvIV(sv); | |
2585 | if (PL_perldb && !PL_DBsingle) | |
2586 | init_debugger(); | |
2587 | break; | |
2588 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2589 | goto do_prematch; | |
2590 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
2591 | goto do_postmatch; | |
2592 | } | |
9b9e0be4 | 2593 | break; |
79072805 | 2594 | case '\024': /* ^T */ |
88e89b8a | 2595 | #ifdef BIG_TIME |
6b88bc9c | 2596 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2597 | #else |
38ab35f8 | 2598 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2599 | #endif |
79072805 | 2600 | break; |
e07ea26a NC |
2601 | case '\025': /* ^UTF8CACHE */ |
2602 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2603 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2604 | } | |
2605 | break; | |
fde18df1 | 2606 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2607 | if (*(mg->mg_ptr+1) == '\0') { |
2608 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2609 | i = SvIV(sv); |
ac27b0f5 | 2610 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2611 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2612 | } |
599cee73 | 2613 | } |
0a378802 | 2614 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2615 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2616 | if (!SvPOK(sv) && PL_localizing) { |
2617 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2618 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2619 | break; |
2620 | } | |
f4fc7782 | 2621 | { |
b5477537 | 2622 | STRLEN len, i; |
d3a7d8c7 | 2623 | int accumulate = 0 ; |
f4fc7782 | 2624 | int any_fatals = 0 ; |
b83604b4 | 2625 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2626 | for (i = 0 ; i < len ; ++i) { |
2627 | accumulate |= ptr[i] ; | |
2628 | any_fatals |= (ptr[i] & 0xAA) ; | |
2629 | } | |
4243c432 NC |
2630 | if (!accumulate) { |
2631 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2632 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2633 | PL_compiling.cop_warnings = pWARN_NONE; | |
2634 | } | |
72dc9ed5 NC |
2635 | /* Yuck. I can't see how to abstract this: */ |
2636 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2637 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2638 | if (!specialWARN(PL_compiling.cop_warnings)) |
2639 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2640 | PL_compiling.cop_warnings = pWARN_ALL; |
2641 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2642 | } |
d3a7d8c7 | 2643 | else { |
72dc9ed5 NC |
2644 | STRLEN len; |
2645 | const char *const p = SvPV_const(sv, len); | |
2646 | ||
2647 | PL_compiling.cop_warnings | |
8ee4cf24 | 2648 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2649 | p, len); |
2650 | ||
d3a7d8c7 GS |
2651 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2652 | PL_dowarn |= G_WARN_ONCE ; | |
2653 | } | |
f4fc7782 | 2654 | |
d3a7d8c7 | 2655 | } |
4438c4b7 | 2656 | } |
971a9dd3 | 2657 | } |
79072805 LW |
2658 | break; |
2659 | case '.': | |
3280af22 NIS |
2660 | if (PL_localizing) { |
2661 | if (PL_localizing == 1) | |
7766f137 | 2662 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2663 | } |
3280af22 | 2664 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2665 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2666 | break; |
2667 | case '^': | |
acbe1b9d FC |
2668 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2669 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2670 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2671 | break; |
2672 | case '~': | |
acbe1b9d FC |
2673 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2674 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2675 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2676 | break; |
2677 | case '=': | |
acbe1b9d | 2678 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2679 | break; |
2680 | case '-': | |
acbe1b9d FC |
2681 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
2682 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
099be4f1 | 2683 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 LW |
2684 | break; |
2685 | case '%': | |
acbe1b9d | 2686 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2687 | break; |
2688 | case '|': | |
4b65379b | 2689 | { |
099be4f1 | 2690 | IO * const io = GvIO(PL_defoutgv); |
720f287d AB |
2691 | if(!io) |
2692 | break; | |
38ab35f8 | 2693 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2694 | IoFLAGS(io) &= ~IOf_FLUSH; |
2695 | else { | |
2696 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2697 | PerlIO *ofp = IoOFP(io); | |
2698 | if (ofp) | |
2699 | (void)PerlIO_flush(ofp); | |
2700 | IoFLAGS(io) |= IOf_FLUSH; | |
2701 | } | |
2702 | } | |
79072805 LW |
2703 | } |
2704 | break; | |
79072805 | 2705 | case '/': |
3280af22 | 2706 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2707 | PL_rs = newSVsv(sv); |
79072805 LW |
2708 | break; |
2709 | case '\\': | |
ef8d46e8 | 2710 | SvREFCNT_dec(PL_ors_sv); |
009c130f | 2711 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2712 | PL_ors_sv = newSVsv(sv); |
009c130f | 2713 | } |
e3c19b7b | 2714 | else { |
a0714e2c | 2715 | PL_ors_sv = NULL; |
e3c19b7b | 2716 | } |
79072805 | 2717 | break; |
79072805 | 2718 | case '[': |
e1dccc0d Z |
2719 | if (SvIV(sv) != 0) |
2720 | Perl_croak(aTHX_ "Assigning non-zero to $[ is no longer possible"); | |
79072805 LW |
2721 | break; |
2722 | case '?': | |
ff0cee69 | 2723 | #ifdef COMPLEX_STATUS |
6b88bc9c | 2724 | if (PL_localizing == 2) { |
41cb7b2b | 2725 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
2726 | PL_statusvalue = LvTARGOFF(sv); |
2727 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2728 | } |
2729 | else | |
2730 | #endif | |
2731 | #ifdef VMSISH_STATUS | |
2732 | if (VMSISH_STATUS) | |
fb38d079 | 2733 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2734 | else |
2735 | #endif | |
38ab35f8 | 2736 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2737 | break; |
2738 | case '!': | |
93189314 JH |
2739 | { |
2740 | #ifdef VMS | |
2741 | # define PERL_VMS_BANG vaxc$errno | |
2742 | #else | |
2743 | # define PERL_VMS_BANG 0 | |
2744 | #endif | |
91487cfc | 2745 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2746 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2747 | } | |
79072805 LW |
2748 | break; |
2749 | case '<': | |
38ab35f8 | 2750 | PL_uid = SvIV(sv); |
3280af22 NIS |
2751 | if (PL_delaymagic) { |
2752 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2753 | break; /* don't do magic till later */ |
2754 | } | |
2755 | #ifdef HAS_SETRUID | |
b28d0864 | 2756 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2757 | #else |
2758 | #ifdef HAS_SETREUID | |
3280af22 | 2759 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2760 | #else |
85e6fe83 | 2761 | #ifdef HAS_SETRESUID |
b28d0864 | 2762 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2763 | #else |
75870ed3 | 2764 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2765 | #ifdef PERL_DARWIN | |
2766 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2767 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2768 | (void)PerlProc_setuid(0); | |
2769 | #endif | |
b28d0864 | 2770 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2771 | } else { |
d8eceb89 | 2772 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2773 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2774 | } |
79072805 LW |
2775 | #endif |
2776 | #endif | |
85e6fe83 | 2777 | #endif |
d8eceb89 | 2778 | PL_uid = PerlProc_getuid(); |
79072805 LW |
2779 | break; |
2780 | case '>': | |
38ab35f8 | 2781 | PL_euid = SvIV(sv); |
3280af22 NIS |
2782 | if (PL_delaymagic) { |
2783 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2784 | break; /* don't do magic till later */ |
2785 | } | |
2786 | #ifdef HAS_SETEUID | |
3280af22 | 2787 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2788 | #else |
2789 | #ifdef HAS_SETREUID | |
b28d0864 | 2790 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2791 | #else |
2792 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2793 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2794 | #else |
b28d0864 NIS |
2795 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2796 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2797 | else { |
e8ee3774 | 2798 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2799 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2800 | } |
79072805 LW |
2801 | #endif |
2802 | #endif | |
85e6fe83 | 2803 | #endif |
d8eceb89 | 2804 | PL_euid = PerlProc_geteuid(); |
79072805 LW |
2805 | break; |
2806 | case '(': | |
38ab35f8 | 2807 | PL_gid = SvIV(sv); |
3280af22 NIS |
2808 | if (PL_delaymagic) { |
2809 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2810 | break; /* don't do magic till later */ |
2811 | } | |
2812 | #ifdef HAS_SETRGID | |
b28d0864 | 2813 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2814 | #else |
2815 | #ifdef HAS_SETREGID | |
3280af22 | 2816 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2817 | #else |
2818 | #ifdef HAS_SETRESGID | |
b28d0864 | 2819 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2820 | #else |
b28d0864 NIS |
2821 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2822 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2823 | else { |
d8eceb89 | 2824 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2825 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2826 | } |
79072805 LW |
2827 | #endif |
2828 | #endif | |
85e6fe83 | 2829 | #endif |
d8eceb89 | 2830 | PL_gid = PerlProc_getgid(); |
79072805 LW |
2831 | break; |
2832 | case ')': | |
5cd24f17 | 2833 | #ifdef HAS_SETGROUPS |
2834 | { | |
b83604b4 | 2835 | const char *p = SvPV_const(sv, len); |
757f63d8 | 2836 | Groups_t *gary = NULL; |
fb4089e0 | 2837 | #ifdef _SC_NGROUPS_MAX |
2838 | int maxgrp = sysconf(_SC_NGROUPS_MAX); | |
2839 | ||
2840 | if (maxgrp < 0) | |
2841 | maxgrp = NGROUPS; | |
2842 | #else | |
2843 | int maxgrp = NGROUPS; | |
2844 | #endif | |
757f63d8 SP |
2845 | |
2846 | while (isSPACE(*p)) | |
2847 | ++p; | |
2848 | PL_egid = Atol(p); | |
fb4089e0 | 2849 | for (i = 0; i < maxgrp; ++i) { |
757f63d8 SP |
2850 | while (*p && !isSPACE(*p)) |
2851 | ++p; | |
2852 | while (isSPACE(*p)) | |
2853 | ++p; | |
2854 | if (!*p) | |
2855 | break; | |
2856 | if(!gary) | |
2857 | Newx(gary, i + 1, Groups_t); | |
2858 | else | |
2859 | Renew(gary, i + 1, Groups_t); | |
2860 | gary[i] = Atol(p); | |
2861 | } | |
2862 | if (i) | |
2863 | (void)setgroups(i, gary); | |
f5a63d97 | 2864 | Safefree(gary); |
5cd24f17 | 2865 | } |
2866 | #else /* HAS_SETGROUPS */ | |
38ab35f8 | 2867 | PL_egid = SvIV(sv); |
5cd24f17 | 2868 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2869 | if (PL_delaymagic) { |
2870 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2871 | break; /* don't do magic till later */ |
2872 | } | |
2873 | #ifdef HAS_SETEGID | |
3280af22 | 2874 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2875 | #else |
2876 | #ifdef HAS_SETREGID | |
b28d0864 | 2877 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2878 | #else |
2879 | #ifdef HAS_SETRESGID | |
b28d0864 | 2880 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2881 | #else |
b28d0864 NIS |
2882 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2883 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2884 | else { |
d8eceb89 | 2885 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2886 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2887 | } |
79072805 LW |
2888 | #endif |
2889 | #endif | |
85e6fe83 | 2890 | #endif |
d8eceb89 | 2891 | PL_egid = PerlProc_getegid(); |
79072805 LW |
2892 | break; |
2893 | case ':': | |
2d8e6c8d | 2894 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2895 | break; |
9cdac2a2 FC |
2896 | case '$': /* $$ */ |
2897 | /* Store the pid in mg->mg_obj so we can tell when a fork has | |
2898 | occurred. mg->mg_obj points to *$ by default, so clear it. */ | |
2899 | if (isGV(mg->mg_obj)) { | |
2900 | if (mg->mg_flags & MGf_REFCOUNTED) /* probably never true */ | |
2901 | SvREFCNT_dec(mg->mg_obj); | |
2902 | mg->mg_flags |= MGf_REFCOUNTED; | |
2903 | mg->mg_obj = newSViv((IV)PerlProc_getpid()); | |
2904 | } | |
2905 | else sv_setiv(mg->mg_obj, (IV)PerlProc_getpid()); | |
2906 | break; | |
79072805 | 2907 | case '0': |
e2975953 | 2908 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2909 | #ifdef HAS_SETPROCTITLE |
2910 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2911 | * show a string from the process struct and provide | |
2912 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2913 | if (PL_origalen != 1) { |
b83604b4 | 2914 | s = SvPV_const(sv, len); |
98b76f99 | 2915 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2916 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2917 | * but not the "(perl) suffix from the ps(1) |
2918 | * output, because that's what ps(1) shows if the | |
2919 | * argv[] is modified. */ | |
6f2ad931 | 2920 | setproctitle("-%s", s); |
9aad2c0e | 2921 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2922 | /* This doesn't really work if you assume that |
2923 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2924 | * because in ps(1) output the result will be like | |
2925 | * sprintf("perl: %s (perl)", s) | |
2926 | * I guess this is a security feature: | |
2927 | * one (a user process) cannot get rid of the original name. | |
2928 | * --jhi */ | |
2929 | setproctitle("%s", s); | |
2930 | # endif | |
2931 | } | |
9d3968b2 | 2932 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2933 | if (PL_origalen != 1) { |
17aa7f3d | 2934 | union pstun un; |
b83604b4 | 2935 | s = SvPV_const(sv, len); |
6867be6d | 2936 | un.pst_command = (char *)s; |
17aa7f3d JH |
2937 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2938 | } | |
9d3968b2 | 2939 | #else |
2d2af554 GA |
2940 | if (PL_origalen > 1) { |
2941 | /* PL_origalen is set in perl_parse(). */ | |
2942 | s = SvPV_force(sv,len); | |
2943 | if (len >= (STRLEN)PL_origalen-1) { | |
2944 | /* Longer than original, will be truncated. We assume that | |
2945 | * PL_origalen bytes are available. */ | |
2946 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
2947 | } | |
2948 | else { | |
2949 | /* Shorter than original, will be padded. */ | |
235ac35d | 2950 | #ifdef PERL_DARWIN |
60777a0d JH |
2951 | /* Special case for Mac OS X: see [perl #38868] */ |
2952 | const int pad = 0; | |
235ac35d | 2953 | #else |
8a89a4f1 MB |
2954 | /* Is the space counterintuitive? Yes. |
2955 | * (You were expecting \0?) | |
2956 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
2957 | * --jhi */ | |
60777a0d | 2958 | const int pad = ' '; |
235ac35d | 2959 | #endif |
60777a0d JH |
2960 | Copy(s, PL_origargv[0], len, char); |
2961 | PL_origargv[0][len] = 0; | |
2962 | memset(PL_origargv[0] + len + 1, | |
2963 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
2964 | } |
2965 | PL_origargv[0][PL_origalen-1] = 0; | |
2966 | for (i = 1; i < PL_origargc; i++) | |
2967 | PL_origargv[i] = 0; | |
7636ea95 AB |
2968 | #ifdef HAS_PRCTL_SET_NAME |
2969 | /* Set the legacy process name in addition to the POSIX name on Linux */ | |
2970 | if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) { | |
2971 | /* diag_listed_as: SKIPME */ | |
2972 | Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno)); | |
2973 | } | |
2974 | #endif | |
79072805 | 2975 | } |
9d3968b2 | 2976 | #endif |
e2975953 | 2977 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 LW |
2978 | break; |
2979 | } | |
2980 | return 0; | |
2981 | } | |
2982 | ||
2983 | I32 | |
35a4481c | 2984 | Perl_whichsig(pTHX_ const char *sig) |
79072805 | 2985 | { |
aadb217d | 2986 | register char* const* sigv; |
7918f24d NC |
2987 | |
2988 | PERL_ARGS_ASSERT_WHICHSIG; | |
96a5add6 | 2989 | PERL_UNUSED_CONTEXT; |
79072805 | 2990 | |
aadb217d | 2991 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
79072805 | 2992 | if (strEQ(sig,*sigv)) |
aadb217d | 2993 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 LW |
2994 | #ifdef SIGCLD |
2995 | if (strEQ(sig,"CHLD")) | |
2996 | return SIGCLD; | |
2997 | #endif | |
2998 | #ifdef SIGCHLD | |
2999 | if (strEQ(sig,"CLD")) | |
3000 | return SIGCHLD; | |
3001 | #endif | |
7f1236c0 | 3002 | return -1; |
79072805 LW |
3003 | } |
3004 | ||
ecfc5424 | 3005 | Signal_t |
1e82f5a6 | 3006 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3007 | Perl_sighandler(int sig, siginfo_t *sip, void *uap) |
1e82f5a6 SH |
3008 | #else |
3009 | Perl_sighandler(int sig) | |
3010 | #endif | |
79072805 | 3011 | { |
1018e26f NIS |
3012 | #ifdef PERL_GET_SIG_CONTEXT |
3013 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 3014 | #else |
cea2e8a9 | 3015 | dTHX; |
71d280e3 | 3016 | #endif |
79072805 | 3017 | dSP; |
a0714e2c SS |
3018 | GV *gv = NULL; |
3019 | SV *sv = NULL; | |
8772537c | 3020 | SV * const tSv = PL_Sv; |
601f1833 | 3021 | CV *cv = NULL; |
533c011a | 3022 | OP *myop = PL_op; |
84902520 | 3023 | U32 flags = 0; |
8772537c | 3024 | XPV * const tXpv = PL_Xpv; |
0c4d3b5e | 3025 | I32 old_ss_ix = PL_savestack_ix; |
71d280e3 | 3026 | |
84902520 | 3027 | |
727405f8 | 3028 | if (!PL_psig_ptr[sig]) { |
99ef548b | 3029 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
3030 | PL_sig_name[sig]); |
3031 | exit(sig); | |
3032 | } | |
ff0cee69 | 3033 | |
a0d63a7b DM |
3034 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3035 | /* Max number of items pushed there is 3*n or 4. We cannot fix | |
3036 | infinity, so we fix 4 (in fact 5): */ | |
3037 | if (PL_savestack_ix + 15 <= PL_savestack_max) { | |
3038 | flags |= 1; | |
3039 | PL_savestack_ix += 5; /* Protect save in progress. */ | |
3040 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, NULL); | |
3041 | } | |
84902520 | 3042 | } |
84902520 | 3043 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ea726b52 | 3044 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig]))) |
8772537c AL |
3045 | || SvTYPE(cv) != SVt_PVCV) { |
3046 | HV *st; | |
f2c0649b | 3047 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 3048 | } |
84902520 | 3049 | |
a0d0e21e | 3050 | if (!cv || !CvROOT(cv)) { |
a2a5de95 NC |
3051 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
3052 | PL_sig_name[sig], (gv ? GvENAME(gv) | |
3053 | : ((cv && CvGV(cv)) | |
3054 | ? GvENAME(CvGV(cv)) | |
3055 | : "__ANON__"))); | |
00d579c5 | 3056 | goto cleanup; |
79072805 LW |
3057 | } |
3058 | ||
0c4d3b5e DM |
3059 | sv = PL_psig_name[sig] |
3060 | ? SvREFCNT_inc_NN(PL_psig_name[sig]) | |
3061 | : newSVpv(PL_sig_name[sig],0); | |
72048cfe | 3062 | flags |= 8; |
0c4d3b5e DM |
3063 | SAVEFREESV(sv); |
3064 | ||
a0d63a7b DM |
3065 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3066 | /* make sure our assumption about the size of the SAVEs are correct: | |
3067 | * 3 for SAVEDESTRUCTOR_X, 2 for SAVEFREESV */ | |
3068 | assert(old_ss_ix + 2 + ((flags & 1) ? 3+5 : 0) == PL_savestack_ix); | |
3069 | } | |
e336de0d | 3070 | |
e788e7d3 | 3071 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 3072 | PUSHMARK(SP); |
79072805 | 3073 | PUSHs(sv); |
8aad04aa JH |
3074 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
3075 | { | |
3076 | struct sigaction oact; | |
3077 | ||
3078 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
3079 | if (sip) { |
3080 | HV *sih = newHV(); | |
ad64d0ec | 3081 | SV *rv = newRV_noinc(MUTABLE_SV(sih)); |
8aad04aa JH |
3082 | /* The siginfo fields signo, code, errno, pid, uid, |
3083 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
3084 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
3085 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 3086 | #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 |
3087 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
3088 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
3089 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
3090 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
3091 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
3092 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 3093 | #endif |
8aad04aa | 3094 | EXTEND(SP, 2); |
ad64d0ec | 3095 | PUSHs(rv); |
22f1178f | 3096 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 3097 | } |
b4552a27 | 3098 | |
8aad04aa JH |
3099 | } |
3100 | } | |
3101 | #endif | |
79072805 | 3102 | PUTBACK; |
a0d0e21e | 3103 | |
ad64d0ec | 3104 | call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL); |
79072805 | 3105 | |
d3acc0f7 | 3106 | POPSTACK; |
1b266415 | 3107 | if (SvTRUE(ERRSV)) { |
c22d665b | 3108 | #ifndef PERL_MICRO |
1b266415 NIS |
3109 | /* Handler "died", for example to get out of a restart-able read(). |
3110 | * Before we re-do that on its behalf re-enable the signal which was | |
3111 | * blocked by the system when we entered. | |
3112 | */ | |
c22d665b | 3113 | #ifdef HAS_SIGPROCMASK |
d488af49 | 3114 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3115 | if (sip || uap) |
c22d665b LT |
3116 | #endif |
3117 | { | |
3118 | sigset_t set; | |
3119 | sigemptyset(&set); | |
3120 | sigaddset(&set,sig); | |
3121 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
3122 | } | |
3123 | #else | |
1b266415 NIS |
3124 | /* Not clear if this will work */ |
3125 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 3126 | (void)rsignal(sig, PL_csighandlerp); |
c22d665b LT |
3127 | #endif |
3128 | #endif /* !PERL_MICRO */ | |
c5df3096 | 3129 | die_sv(ERRSV); |
1b266415 | 3130 | } |
00d579c5 | 3131 | cleanup: |
0c4d3b5e DM |
3132 | /* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */ |
3133 | PL_savestack_ix = old_ss_ix; | |
72048cfe | 3134 | if (flags & 8) |
84902520 | 3135 | SvREFCNT_dec(sv); |
533c011a | 3136 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 3137 | |
3280af22 NIS |
3138 | PL_Sv = tSv; /* Restore global temporaries. */ |
3139 | PL_Xpv = tXpv; | |
53bb94e2 | 3140 | return; |
79072805 | 3141 | } |
4e35701f NIS |
3142 | |
3143 | ||
51371543 | 3144 | static void |
8772537c | 3145 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3146 | { |
97aff369 | 3147 | dVAR; |
8772537c AL |
3148 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3149 | SV* const sv = mgs->mgs_sv; | |
150b625d | 3150 | bool bumped; |
51371543 GS |
3151 | |
3152 | if (!sv) | |
3153 | return; | |
3154 | ||
3155 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
3156 | { | |
f8c7b90f | 3157 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3158 | /* While magic was saved (and off) sv_setsv may well have seen |
3159 | this SV as a prime candidate for COW. */ | |
3160 | if (SvIsCOW(sv)) | |
e424a81e | 3161 | sv_force_normal_flags(sv, 0); |
f9701176 NC |
3162 | #endif |
3163 | ||
f9c6fee5 CS |
3164 | if (mgs->mgs_readonly) |
3165 | SvREADONLY_on(sv); | |
3166 | if (mgs->mgs_magical) | |
3167 | SvFLAGS(sv) |= mgs->mgs_magical; | |
51371543 GS |
3168 | else |
3169 | mg_magical(sv); | |
2b77b520 YST |
3170 | if (SvGMAGICAL(sv)) { |
3171 | /* downgrade public flags to private, | |
3172 | and discard any other private flags */ | |
3173 | ||
10edeb5d JH |
3174 | const U32 pubflags = SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK); |
3175 | if (pubflags) { | |
3176 | SvFLAGS(sv) &= ~( pubflags | (SVp_IOK|SVp_NOK|SVp_POK) ); | |
3177 | SvFLAGS(sv) |= ( pubflags << PRIVSHIFT ); | |
2b77b520 YST |
3178 | } |
3179 | } | |
51371543 GS |
3180 | } |
3181 | ||
150b625d | 3182 | bumped = mgs->mgs_bumped; |
51371543 GS |
3183 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
3184 | ||
3185 | /* If we're still on top of the stack, pop us off. (That condition | |
3186 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3187 | * if it's being called via leave_scope.) | |
3188 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3189 | * may leave alloc gunk on the savestack, and some code | |
3190 | * (e.g. sighandler) doesn't expect that... | |
3191 | */ | |
3192 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3193 | { | |
1be36ce0 NC |
3194 | UV popval = SSPOPUV; |
3195 | assert(popval == SAVEt_DESTRUCTOR_X); | |
51371543 | 3196 | PL_savestack_ix -= 2; |
1be36ce0 NC |
3197 | popval = SSPOPUV; |
3198 | assert((popval & SAVE_MASK) == SAVEt_ALLOC); | |
3199 | PL_savestack_ix -= popval >> SAVE_TIGHT_SHIFT; | |
51371543 | 3200 | } |
150b625d DM |
3201 | if (bumped) { |
3202 | if (SvREFCNT(sv) == 1) { | |
3203 | /* We hold the last reference to this SV, which implies that the | |
3204 | SV was deleted as a side effect of the routines we called. | |
3205 | So artificially keep it alive a bit longer. | |
3206 | We avoid turning on the TEMP flag, which can cause the SV's | |
3207 | buffer to get stolen (and maybe other stuff). */ | |
3208 | int was_temp = SvTEMP(sv); | |
3209 | sv_2mortal(sv); | |
3210 | if (!was_temp) { | |
3211 | SvTEMP_off(sv); | |
3212 | } | |
3213 | SvOK_off(sv); | |
8985fe98 | 3214 | } |
150b625d DM |
3215 | else |
3216 | SvREFCNT_dec(sv); /* undo the inc in S_save_magic() */ | |
8985fe98 | 3217 | } |
51371543 GS |
3218 | } |
3219 | ||
0c4d3b5e DM |
3220 | /* clean up the mess created by Perl_sighandler(). |
3221 | * Note that this is only called during an exit in a signal handler; | |
3222 | * a die is trapped by the call_sv() and the SAVEDESTRUCTOR_X manually | |
9a7f166c | 3223 | * skipped over. */ |
0c4d3b5e | 3224 | |
51371543 | 3225 | static void |
8772537c | 3226 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3227 | { |
27da23d5 | 3228 | dVAR; |
0c4d3b5e | 3229 | PERL_UNUSED_ARG(p); |
7918f24d | 3230 | |
0c4d3b5e | 3231 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
51371543 | 3232 | } |
1018e26f | 3233 | |
66610fdd | 3234 | /* |
b3ca2e83 NC |
3235 | =for apidoc magic_sethint |
3236 | ||
3237 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3238 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3239 | anything that would need a deep copy. Maybe we should warn if we find a | |
3240 | reference. | |
b3ca2e83 NC |
3241 | |
3242 | =cut | |
3243 | */ | |
3244 | int | |
3245 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3246 | { | |
3247 | dVAR; | |
ad64d0ec | 3248 | SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr) |
59cd0e26 | 3249 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3250 | |
7918f24d NC |
3251 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3252 | ||
e6e3e454 NC |
3253 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3254 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3255 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3256 | or take other more complex action. */ | |
3257 | ||
5b9c0671 NC |
3258 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3259 | Doing this here saves a lot of doing it manually in perl code (and | |
3260 | forgetting to do it, and consequent subtle errors. */ | |
3261 | PL_hints |= HINT_LOCALIZE_HH; | |
20439bc7 Z |
3262 | CopHINTHASH_set(&PL_compiling, |
3263 | cophh_store_sv(CopHINTHASH_get(&PL_compiling), key, 0, sv, 0)); | |
b3ca2e83 NC |
3264 | return 0; |
3265 | } | |
3266 | ||
3267 | /* | |
f175cff5 | 3268 | =for apidoc magic_clearhint |
b3ca2e83 | 3269 | |
c28fe1ec NC |
3270 | Triggered by a delete from %^H, records the key to |
3271 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3272 | |
3273 | =cut | |
3274 | */ | |
3275 | int | |
3276 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3277 | { | |
3278 | dVAR; | |
7918f24d NC |
3279 | |
3280 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; | |
f5a63d97 AL |
3281 | PERL_UNUSED_ARG(sv); |
3282 | ||
b3ca2e83 NC |
3283 | assert(mg->mg_len == HEf_SVKEY); |
3284 | ||
b3f24c00 MHM |
3285 | PERL_UNUSED_ARG(sv); |
3286 | ||
5b9c0671 | 3287 | PL_hints |= HINT_LOCALIZE_HH; |
20439bc7 Z |
3288 | CopHINTHASH_set(&PL_compiling, |
3289 | cophh_delete_sv(CopHINTHASH_get(&PL_compiling), | |
3290 | MUTABLE_SV(mg->mg_ptr), 0, 0)); | |
b3ca2e83 NC |
3291 | return 0; |
3292 | } | |
3293 | ||
3294 | /* | |
f747ebd6 Z |
3295 | =for apidoc magic_clearhints |
3296 | ||
3297 | Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>. | |
3298 | ||
3299 | =cut | |
3300 | */ | |
3301 | int | |
3302 | Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg) | |
3303 | { | |
3304 | PERL_ARGS_ASSERT_MAGIC_CLEARHINTS; | |
3305 | PERL_UNUSED_ARG(sv); | |
3306 | PERL_UNUSED_ARG(mg); | |
20439bc7 Z |
3307 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
3308 | CopHINTHASH_set(&PL_compiling, cophh_new_empty()); | |
f747ebd6 Z |
3309 | return 0; |
3310 | } | |
3311 | ||
3312 | /* | |
66610fdd RGS |
3313 | * Local variables: |
3314 | * c-indentation-style: bsd | |
3315 | * c-basic-offset: 4 | |
3316 | * indent-tabs-mode: t | |
3317 | * End: | |
3318 | * | |
37442d52 RGS |
3319 | * ex: set ts=8 sts=4 sw=4 noet: |
3320 | */ |