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 | /* |
4bac9ae4 | 79 | * Pre-magic setup and post-magic takedown. |
c07a80fd | 80 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. |
81 | */ | |
82 | ||
83 | struct magic_state { | |
84 | SV* mgs_sv; | |
455ece5e | 85 | I32 mgs_ss_ix; |
f9c6fee5 CS |
86 | U32 mgs_magical; |
87 | bool mgs_readonly; | |
150b625d | 88 | bool mgs_bumped; |
c07a80fd | 89 | }; |
455ece5e | 90 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
91 | |
92 | STATIC void | |
8fb26106 | 93 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 94 | { |
97aff369 | 95 | dVAR; |
455ece5e | 96 | MGS* mgs; |
150b625d | 97 | bool bumped = FALSE; |
7918f24d NC |
98 | |
99 | PERL_ARGS_ASSERT_SAVE_MAGIC; | |
100 | ||
4bac9ae4 CS |
101 | assert(SvMAGICAL(sv)); |
102 | ||
150b625d DM |
103 | /* we shouldn't really be called here with RC==0, but it can sometimes |
104 | * happen via mg_clear() (which also shouldn't be called when RC==0, | |
105 | * but it can happen). Handle this case gracefully(ish) by not RC++ | |
106 | * and thus avoiding the resultant double free */ | |
107 | if (SvREFCNT(sv) > 0) { | |
108 | /* guard against sv getting freed midway through the mg clearing, | |
109 | * by holding a private reference for the duration. */ | |
110 | SvREFCNT_inc_simple_void_NN(sv); | |
111 | bumped = TRUE; | |
112 | } | |
8985fe98 | 113 | |
d8b2590f NC |
114 | /* Turning READONLY off for a copy-on-write scalar (including shared |
115 | hash keys) is a bad idea. */ | |
765f542d | 116 | if (SvIsCOW(sv)) |
9a265e59 | 117 | sv_force_normal_flags(sv, 0); |
c07a80fd | 118 | |
8772537c | 119 | SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
120 | |
121 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 122 | mgs->mgs_sv = sv; |
f9c6fee5 CS |
123 | mgs->mgs_magical = SvMAGICAL(sv); |
124 | mgs->mgs_readonly = SvREADONLY(sv) != 0; | |
455ece5e | 125 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
150b625d | 126 | mgs->mgs_bumped = bumped; |
c07a80fd | 127 | |
128 | SvMAGICAL_off(sv); | |
129 | SvREADONLY_off(sv); | |
c07a80fd | 130 | } |
131 | ||
954c1994 GS |
132 | /* |
133 | =for apidoc mg_magical | |
134 | ||
135 | Turns on the magical status of an SV. See C<sv_magic>. | |
136 | ||
137 | =cut | |
138 | */ | |
139 | ||
8990e307 | 140 | void |
864dbfa3 | 141 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 | 142 | { |
e1ec3a88 | 143 | const MAGIC* mg; |
7918f24d | 144 | PERL_ARGS_ASSERT_MG_MAGICAL; |
96a5add6 | 145 | PERL_UNUSED_CONTEXT; |
f9c6fee5 CS |
146 | |
147 | SvMAGICAL_off(sv); | |
218787bd | 148 | if ((mg = SvMAGIC(sv))) { |
218787bd VP |
149 | do { |
150 | const MGVTBL* const vtbl = mg->mg_virtual; | |
151 | if (vtbl) { | |
152 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) | |
153 | SvGMAGICAL_on(sv); | |
154 | if (vtbl->svt_set) | |
155 | SvSMAGICAL_on(sv); | |
156 | if (vtbl->svt_clear) | |
157 | SvRMAGICAL_on(sv); | |
158 | } | |
159 | } while ((mg = mg->mg_moremagic)); | |
160 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG))) | |
161 | SvRMAGICAL_on(sv); | |
8990e307 LW |
162 | } |
163 | } | |
164 | ||
954c1994 GS |
165 | /* |
166 | =for apidoc mg_get | |
167 | ||
168 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
169 | ||
170 | =cut | |
171 | */ | |
172 | ||
79072805 | 173 | int |
864dbfa3 | 174 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 175 | { |
97aff369 | 176 | dVAR; |
35a4481c | 177 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
a9844598 | 178 | bool saved = FALSE; |
f9c6fee5 | 179 | bool have_new = 0; |
ff76feab | 180 | MAGIC *newmg, *head, *cur, *mg; |
6683b158 | 181 | |
7918f24d NC |
182 | PERL_ARGS_ASSERT_MG_GET; |
183 | ||
407287f9 FC |
184 | if (PL_localizing == 1 && sv == DEFSV) return 0; |
185 | ||
ff76feab AMS |
186 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
187 | list of magic. svt_get() may delete the current entry, add new | |
188 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
189 | ||
190 | newmg = cur = head = mg = SvMAGIC(sv); | |
191 | while (mg) { | |
35a4481c | 192 | const MGVTBL * const vtbl = mg->mg_virtual; |
f9c6fee5 | 193 | MAGIC * const nextmg = mg->mg_moremagic; /* it may delete itself */ |
ff76feab | 194 | |
2b260de0 | 195 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
a9844598 CS |
196 | |
197 | /* taint's mg get is so dumb it doesn't need flag saving */ | |
198 | if (!saved && mg->mg_type != PERL_MAGIC_taint) { | |
199 | save_magic(mgs_ix, sv); | |
200 | saved = TRUE; | |
201 | } | |
202 | ||
16c91539 | 203 | vtbl->svt_get(aTHX_ sv, mg); |
b77f7d40 | 204 | |
58f82c5c DM |
205 | /* guard against magic having been deleted - eg FETCH calling |
206 | * untie */ | |
f9c6fee5 CS |
207 | if (!SvMAGIC(sv)) { |
208 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ | |
58f82c5c | 209 | break; |
f9c6fee5 | 210 | } |
b77f7d40 | 211 | |
f9c6fee5 | 212 | /* recalculate flags if this entry was deleted. */ |
ff76feab | 213 | if (mg->mg_flags & MGf_GSKIP) |
f9c6fee5 | 214 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; |
a0d0e21e | 215 | } |
7d1328bb FC |
216 | else if (vtbl == &PL_vtbl_utf8) { |
217 | /* get-magic can reallocate the PV */ | |
218 | magic_setutf8(sv, mg); | |
219 | } | |
ff76feab | 220 | |
f9c6fee5 | 221 | mg = nextmg; |
ff76feab | 222 | |
0723351e | 223 | if (have_new) { |
ff76feab AMS |
224 | /* Have we finished with the new entries we saw? Start again |
225 | where we left off (unless there are more new entries). */ | |
226 | if (mg == head) { | |
0723351e | 227 | have_new = 0; |
ff76feab AMS |
228 | mg = cur; |
229 | head = newmg; | |
230 | } | |
231 | } | |
232 | ||
233 | /* Were any new entries added? */ | |
0723351e NC |
234 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
235 | have_new = 1; | |
ff76feab AMS |
236 | cur = mg; |
237 | mg = newmg; | |
f9c6fee5 | 238 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ |
760ac839 | 239 | } |
79072805 | 240 | } |
463ee0b2 | 241 | |
a9844598 CS |
242 | if (saved) |
243 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); | |
244 | ||
79072805 LW |
245 | return 0; |
246 | } | |
247 | ||
954c1994 GS |
248 | /* |
249 | =for apidoc mg_set | |
250 | ||
251 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
252 | ||
253 | =cut | |
254 | */ | |
255 | ||
79072805 | 256 | int |
864dbfa3 | 257 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 258 | { |
97aff369 | 259 | dVAR; |
35a4481c | 260 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 261 | MAGIC* mg; |
463ee0b2 LW |
262 | MAGIC* nextmg; |
263 | ||
7918f24d NC |
264 | PERL_ARGS_ASSERT_MG_SET; |
265 | ||
b5ed8c44 FC |
266 | if (PL_localizing == 2 && sv == DEFSV) return 0; |
267 | ||
455ece5e | 268 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
269 | |
270 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 271 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 272 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
273 | if (mg->mg_flags & MGf_GSKIP) { |
274 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
f9c6fee5 | 275 | (SSPTR(mgs_ix, MGS*))->mgs_magical = 0; |
a0d0e21e | 276 | } |
e0a73de4 | 277 | if (PL_localizing == 2 |
b5ed8c44 | 278 | && PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
e7cbf6c6 | 279 | continue; |
2b260de0 | 280 | if (vtbl && vtbl->svt_set) |
16c91539 | 281 | vtbl->svt_set(aTHX_ sv, mg); |
79072805 | 282 | } |
463ee0b2 | 283 | |
8772537c | 284 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
285 | return 0; |
286 | } | |
287 | ||
954c1994 GS |
288 | /* |
289 | =for apidoc mg_length | |
290 | ||
291 | Report on the SV's length. See C<sv_magic>. | |
292 | ||
293 | =cut | |
294 | */ | |
295 | ||
79072805 | 296 | U32 |
864dbfa3 | 297 | Perl_mg_length(pTHX_ SV *sv) |
79072805 | 298 | { |
97aff369 | 299 | dVAR; |
79072805 | 300 | MAGIC* mg; |
463ee0b2 | 301 | STRLEN len; |
463ee0b2 | 302 | |
7918f24d NC |
303 | PERL_ARGS_ASSERT_MG_LENGTH; |
304 | ||
79072805 | 305 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 306 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 307 | if (vtbl && vtbl->svt_len) { |
35a4481c | 308 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 309 | save_magic(mgs_ix, sv); |
a0d0e21e | 310 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 311 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 312 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
313 | return len; |
314 | } | |
315 | } | |
316 | ||
d0644529 NC |
317 | { |
318 | /* You can't know whether it's UTF-8 until you get the string again... | |
319 | */ | |
10516c54 | 320 | const U8 *s = (U8*)SvPV_const(sv, len); |
d0644529 NC |
321 | |
322 | if (DO_UTF8(sv)) { | |
323 | len = utf8_length(s, s + len); | |
324 | } | |
5636d518 | 325 | } |
463ee0b2 | 326 | return len; |
79072805 LW |
327 | } |
328 | ||
8fb26106 | 329 | I32 |
864dbfa3 | 330 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
331 | { |
332 | MAGIC* mg; | |
ac27b0f5 | 333 | |
7918f24d NC |
334 | PERL_ARGS_ASSERT_MG_SIZE; |
335 | ||
93965878 | 336 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 337 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 338 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
339 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
340 | I32 len; | |
455ece5e | 341 | save_magic(mgs_ix, sv); |
93965878 | 342 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 343 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 344 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
345 | return len; |
346 | } | |
347 | } | |
348 | ||
349 | switch(SvTYPE(sv)) { | |
350 | case SVt_PVAV: | |
502c6561 | 351 | return AvFILLp((const AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
352 | case SVt_PVHV: |
353 | /* FIXME */ | |
354 | default: | |
cea2e8a9 | 355 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
356 | break; |
357 | } | |
358 | return 0; | |
359 | } | |
360 | ||
954c1994 GS |
361 | /* |
362 | =for apidoc mg_clear | |
363 | ||
364 | Clear something magical that the SV represents. See C<sv_magic>. | |
365 | ||
366 | =cut | |
367 | */ | |
368 | ||
79072805 | 369 | int |
864dbfa3 | 370 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 371 | { |
35a4481c | 372 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 373 | MAGIC* mg; |
8ac77ac9 | 374 | MAGIC *nextmg; |
463ee0b2 | 375 | |
7918f24d NC |
376 | PERL_ARGS_ASSERT_MG_CLEAR; |
377 | ||
455ece5e | 378 | save_magic(mgs_ix, sv); |
463ee0b2 | 379 | |
8ac77ac9 | 380 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
35a4481c | 381 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 382 | /* omit GSKIP -- never set here */ |
727405f8 | 383 | |
8ac77ac9 NC |
384 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
385 | ||
2b260de0 | 386 | if (vtbl && vtbl->svt_clear) |
16c91539 | 387 | vtbl->svt_clear(aTHX_ sv, mg); |
79072805 | 388 | } |
463ee0b2 | 389 | |
8772537c | 390 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
391 | return 0; |
392 | } | |
393 | ||
ed624ca8 | 394 | static MAGIC* |
39de7f53 FR |
395 | S_mg_findext_flags(pTHX_ const SV *sv, int type, const MGVTBL *vtbl, U32 flags) |
396 | { | |
397 | PERL_UNUSED_CONTEXT; | |
398 | ||
399 | assert(flags <= 1); | |
400 | ||
401 | if (sv) { | |
402 | MAGIC *mg; | |
403 | ||
404 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
405 | if (mg->mg_type == type && (!flags || mg->mg_virtual == vtbl)) { | |
406 | return mg; | |
407 | } | |
408 | } | |
409 | } | |
410 | ||
411 | return NULL; | |
412 | } | |
413 | ||
954c1994 GS |
414 | /* |
415 | =for apidoc mg_find | |
416 | ||
417 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
418 | ||
419 | =cut | |
420 | */ | |
421 | ||
93a17b20 | 422 | MAGIC* |
35a4481c | 423 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 424 | { |
39de7f53 FR |
425 | return S_mg_findext_flags(aTHX_ sv, type, NULL, 0); |
426 | } | |
427 | ||
428 | /* | |
429 | =for apidoc mg_findext | |
430 | ||
431 | Finds the magic pointer of C<type> with the given C<vtbl> for the C<SV>. See | |
432 | C<sv_magicext>. | |
433 | ||
434 | =cut | |
435 | */ | |
436 | ||
437 | MAGIC* | |
438 | Perl_mg_findext(pTHX_ const SV *sv, int type, const MGVTBL *vtbl) | |
439 | { | |
440 | return S_mg_findext_flags(aTHX_ sv, type, vtbl, 1); | |
93a17b20 LW |
441 | } |
442 | ||
954c1994 GS |
443 | /* |
444 | =for apidoc mg_copy | |
445 | ||
446 | Copies the magic from one SV to another. See C<sv_magic>. | |
447 | ||
448 | =cut | |
449 | */ | |
450 | ||
79072805 | 451 | int |
864dbfa3 | 452 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 453 | { |
463ee0b2 | 454 | int count = 0; |
79072805 | 455 | MAGIC* mg; |
7918f24d NC |
456 | |
457 | PERL_ARGS_ASSERT_MG_COPY; | |
458 | ||
463ee0b2 | 459 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 460 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 | 461 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
16c91539 | 462 | count += vtbl->svt_copy(aTHX_ sv, mg, nsv, key, klen); |
68795e93 | 463 | } |
823a54a3 AL |
464 | else { |
465 | const char type = mg->mg_type; | |
1e73acc8 | 466 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
467 | sv_magic(nsv, |
468 | (type == PERL_MAGIC_tied) | |
469 | ? SvTIED_obj(sv, mg) | |
470 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
471 | ? sv | |
472 | : mg->mg_obj, | |
473 | toLOWER(type), key, klen); | |
474 | count++; | |
475 | } | |
79072805 | 476 | } |
79072805 | 477 | } |
463ee0b2 | 478 | return count; |
79072805 LW |
479 | } |
480 | ||
954c1994 | 481 | /* |
0cbee0a4 DM |
482 | =for apidoc mg_localize |
483 | ||
9711599e CS |
484 | Copy some of the magic from an existing SV to new localized version of that |
485 | SV. Container magic (eg %ENV, $1, tie) gets copied, value magic doesn't (eg | |
486 | taint, pos). | |
487 | ||
af7df257 | 488 | If setmagic is false then no set magic will be called on the new (empty) SV. |
9711599e CS |
489 | This typically means that assignment will soon follow (e.g. 'local $x = $y'), |
490 | and that will handle the magic. | |
0cbee0a4 DM |
491 | |
492 | =cut | |
493 | */ | |
494 | ||
495 | void | |
af7df257 | 496 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv, bool setmagic) |
0cbee0a4 | 497 | { |
97aff369 | 498 | dVAR; |
0cbee0a4 | 499 | MAGIC *mg; |
7918f24d NC |
500 | |
501 | PERL_ARGS_ASSERT_MG_LOCALIZE; | |
502 | ||
658a9f31 JD |
503 | if (nsv == DEFSV) |
504 | return; | |
505 | ||
0cbee0a4 | 506 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
2b1b43ea | 507 | const MGVTBL* const vtbl = mg->mg_virtual; |
e0a73de4 | 508 | if (PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
0cbee0a4 | 509 | continue; |
0cbee0a4 | 510 | |
a5063e7c | 511 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
16c91539 | 512 | (void)vtbl->svt_local(aTHX_ nsv, mg); |
a5063e7c | 513 | else |
0cbee0a4 DM |
514 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
515 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 516 | |
0cbee0a4 | 517 | /* container types should remain read-only across localization */ |
b2b95e4c | 518 | if (!SvIsCOW(sv)) SvFLAGS(nsv) |= SvREADONLY(sv); |
0cbee0a4 DM |
519 | } |
520 | ||
521 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
522 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
af7df257 | 523 | if (setmagic) { |
9711599e CS |
524 | PL_localizing = 1; |
525 | SvSETMAGIC(nsv); | |
526 | PL_localizing = 0; | |
527 | } | |
0cbee0a4 DM |
528 | } |
529 | } | |
530 | ||
d9088386 Z |
531 | #define mg_free_struct(sv, mg) S_mg_free_struct(aTHX_ sv, mg) |
532 | static void | |
533 | S_mg_free_struct(pTHX_ SV *sv, MAGIC *mg) | |
534 | { | |
535 | const MGVTBL* const vtbl = mg->mg_virtual; | |
536 | if (vtbl && vtbl->svt_free) | |
537 | vtbl->svt_free(aTHX_ sv, mg); | |
538 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { | |
539 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) | |
540 | Safefree(mg->mg_ptr); | |
541 | else if (mg->mg_len == HEf_SVKEY) | |
542 | SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr)); | |
543 | } | |
544 | if (mg->mg_flags & MGf_REFCOUNTED) | |
545 | SvREFCNT_dec(mg->mg_obj); | |
546 | Safefree(mg); | |
547 | } | |
548 | ||
0cbee0a4 | 549 | /* |
954c1994 GS |
550 | =for apidoc mg_free |
551 | ||
552 | Free any magic storage used by the SV. See C<sv_magic>. | |
553 | ||
554 | =cut | |
555 | */ | |
556 | ||
79072805 | 557 | int |
864dbfa3 | 558 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
559 | { |
560 | MAGIC* mg; | |
561 | MAGIC* moremagic; | |
7918f24d NC |
562 | |
563 | PERL_ARGS_ASSERT_MG_FREE; | |
564 | ||
79072805 | 565 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
79072805 | 566 | moremagic = mg->mg_moremagic; |
d9088386 | 567 | mg_free_struct(sv, mg); |
c826f41b | 568 | SvMAGIC_set(sv, moremagic); |
79072805 | 569 | } |
b162af07 | 570 | SvMAGIC_set(sv, NULL); |
68f8932e | 571 | SvMAGICAL_off(sv); |
79072805 LW |
572 | return 0; |
573 | } | |
574 | ||
d9088386 Z |
575 | /* |
576 | =for apidoc Am|void|mg_free_type|SV *sv|int how | |
577 | ||
578 | Remove any magic of type I<how> from the SV I<sv>. See L</sv_magic>. | |
579 | ||
580 | =cut | |
581 | */ | |
582 | ||
583 | void | |
584 | Perl_mg_free_type(pTHX_ SV *sv, int how) | |
585 | { | |
586 | MAGIC *mg, *prevmg, *moremg; | |
587 | PERL_ARGS_ASSERT_MG_FREE_TYPE; | |
588 | for (prevmg = NULL, mg = SvMAGIC(sv); mg; prevmg = mg, mg = moremg) { | |
589 | MAGIC *newhead; | |
590 | moremg = mg->mg_moremagic; | |
591 | if (mg->mg_type == how) { | |
592 | /* temporarily move to the head of the magic chain, in case | |
593 | custom free code relies on this historical aspect of mg_free */ | |
594 | if (prevmg) { | |
595 | prevmg->mg_moremagic = moremg; | |
596 | mg->mg_moremagic = SvMAGIC(sv); | |
597 | SvMAGIC_set(sv, mg); | |
598 | } | |
599 | newhead = mg->mg_moremagic; | |
600 | mg_free_struct(sv, mg); | |
601 | SvMAGIC_set(sv, newhead); | |
602 | mg = prevmg; | |
603 | } | |
604 | } | |
605 | mg_magical(sv); | |
606 | } | |
607 | ||
79072805 | 608 | #include <signal.h> |
79072805 | 609 | |
942e002e | 610 | U32 |
864dbfa3 | 611 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 612 | { |
97aff369 | 613 | dVAR; |
8772537c | 614 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 615 | |
7918f24d NC |
616 | PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT; |
617 | ||
0bd48802 | 618 | if (PL_curpm) { |
eb578fdb | 619 | const REGEXP * const rx = PM_GETRE(PL_curpm); |
0bd48802 | 620 | if (rx) { |
a678b0e4 YO |
621 | if (mg->mg_obj) { /* @+ */ |
622 | /* return the number possible */ | |
07bc277f | 623 | return RX_NPARENS(rx); |
a678b0e4 | 624 | } else { /* @- */ |
07bc277f | 625 | I32 paren = RX_LASTPAREN(rx); |
a678b0e4 YO |
626 | |
627 | /* return the last filled */ | |
f46c4081 | 628 | while ( paren >= 0 |
07bc277f NC |
629 | && (RX_OFFS(rx)[paren].start == -1 |
630 | || RX_OFFS(rx)[paren].end == -1) ) | |
f46c4081 | 631 | paren--; |
a678b0e4 YO |
632 | return (U32)paren; |
633 | } | |
0bd48802 | 634 | } |
8f580fb8 | 635 | } |
ac27b0f5 | 636 | |
942e002e | 637 | return (U32)-1; |
6cef1e77 IZ |
638 | } |
639 | ||
6502e081 DM |
640 | /* @-, @+ */ |
641 | ||
6cef1e77 | 642 | int |
864dbfa3 | 643 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 644 | { |
97aff369 | 645 | dVAR; |
7918f24d NC |
646 | |
647 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET; | |
648 | ||
0bd48802 | 649 | if (PL_curpm) { |
eb578fdb | 650 | const REGEXP * const rx = PM_GETRE(PL_curpm); |
0bd48802 | 651 | if (rx) { |
eb578fdb KW |
652 | const I32 paren = mg->mg_len; |
653 | I32 s; | |
654 | I32 t; | |
0bd48802 AL |
655 | if (paren < 0) |
656 | return 0; | |
07bc277f NC |
657 | if (paren <= (I32)RX_NPARENS(rx) && |
658 | (s = RX_OFFS(rx)[paren].start) != -1 && | |
659 | (t = RX_OFFS(rx)[paren].end) != -1) | |
0bd48802 | 660 | { |
eb578fdb | 661 | I32 i; |
0bd48802 AL |
662 | if (mg->mg_obj) /* @+ */ |
663 | i = t; | |
664 | else /* @- */ | |
665 | i = s; | |
666 | ||
667 | if (i > 0 && RX_MATCH_UTF8(rx)) { | |
07bc277f | 668 | const char * const b = RX_SUBBEG(rx); |
0bd48802 | 669 | if (b) |
6502e081 DM |
670 | i = RX_SUBCOFFSET(rx) + |
671 | utf8_length((U8*)b, | |
672 | (U8*)(b-RX_SUBOFFSET(rx)+i)); | |
0bd48802 | 673 | } |
727405f8 | 674 | |
0bd48802 | 675 | sv_setiv(sv, i); |
1aa99e6b | 676 | } |
0bd48802 | 677 | } |
6cef1e77 IZ |
678 | } |
679 | return 0; | |
680 | } | |
681 | ||
6502e081 DM |
682 | /* @-, @+ */ |
683 | ||
e4b89193 | 684 | int |
a29d06ed MG |
685 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
686 | { | |
7918f24d | 687 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET; |
d4c19fe8 AL |
688 | PERL_UNUSED_ARG(sv); |
689 | PERL_UNUSED_ARG(mg); | |
6ad8f254 | 690 | Perl_croak_no_modify(aTHX); |
0dbb1585 | 691 | NORETURN_FUNCTION_END; |
a29d06ed MG |
692 | } |
693 | ||
93a17b20 | 694 | U32 |
864dbfa3 | 695 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 696 | { |
97aff369 | 697 | dVAR; |
eb578fdb KW |
698 | I32 paren; |
699 | I32 i; | |
700 | const REGEXP * rx; | |
2fdbfb4d | 701 | const char * const remaining = mg->mg_ptr + 1; |
93a17b20 | 702 | |
7918f24d NC |
703 | PERL_ARGS_ASSERT_MAGIC_LEN; |
704 | ||
93a17b20 | 705 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
706 | case '\020': |
707 | if (*remaining == '\0') { /* ^P */ | |
708 | break; | |
709 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
710 | goto do_prematch; | |
711 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
712 | goto do_postmatch; | |
713 | } | |
714 | break; | |
715 | case '\015': /* $^MATCH */ | |
716 | if (strEQ(remaining, "ATCH")) { | |
717 | goto do_match; | |
718 | } else { | |
719 | break; | |
720 | } | |
721 | case '`': | |
722 | do_prematch: | |
f1b875a0 | 723 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
724 | goto maybegetparen; |
725 | case '\'': | |
726 | do_postmatch: | |
f1b875a0 | 727 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
728 | goto maybegetparen; |
729 | case '&': | |
730 | do_match: | |
f1b875a0 | 731 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d | 732 | goto maybegetparen; |
93a17b20 | 733 | case '1': case '2': case '3': case '4': |
2fdbfb4d AB |
734 | case '5': case '6': case '7': case '8': case '9': |
735 | paren = atoi(mg->mg_ptr); | |
736 | maybegetparen: | |
aaa362c4 | 737 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
738 | getparen: |
739 | i = CALLREG_NUMBUF_LENGTH((REGEXP * const)rx, sv, paren); | |
cf93c79d | 740 | |
ffc61ed2 | 741 | if (i < 0) |
0844c848 | 742 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 743 | return i; |
2fdbfb4d | 744 | } else { |
235bddc8 | 745 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 746 | report_uninit(sv); |
2fdbfb4d | 747 | return 0; |
93a17b20 | 748 | } |
93a17b20 | 749 | case '+': |
aaa362c4 | 750 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f | 751 | paren = RX_LASTPAREN(rx); |
13f57bf8 CS |
752 | if (paren) |
753 | goto getparen; | |
93a17b20 | 754 | } |
748a9306 | 755 | return 0; |
a01268b5 JH |
756 | case '\016': /* ^N */ |
757 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f | 758 | paren = RX_LASTCLOSEPAREN(rx); |
a01268b5 JH |
759 | if (paren) |
760 | goto getparen; | |
761 | } | |
762 | return 0; | |
93a17b20 LW |
763 | } |
764 | magic_get(sv,mg); | |
2d8e6c8d | 765 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 | 766 | sv_2pv(sv, 0); |
2d8e6c8d | 767 | } |
93a17b20 LW |
768 | if (SvPOK(sv)) |
769 | return SvCUR(sv); | |
770 | return 0; | |
771 | } | |
772 | ||
ad3296c6 | 773 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
774 | if (SvPOK(sv)) { \ |
775 | STRLEN len = SvCUR(sv); \ | |
776 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
777 | while (len > 0 && isSPACE(p[len-1])) \ |
778 | --len; \ | |
779 | SvCUR_set(sv, len); \ | |
780 | p[len] = '\0'; \ | |
781 | } \ | |
ad3296c6 SH |
782 | } STMT_END |
783 | ||
8b850bd5 NC |
784 | void |
785 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
786 | { | |
7918f24d NC |
787 | PERL_ARGS_ASSERT_EMULATE_COP_IO; |
788 | ||
8b850bd5 NC |
789 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) |
790 | sv_setsv(sv, &PL_sv_undef); | |
791 | else { | |
792 | sv_setpvs(sv, ""); | |
793 | SvUTF8_off(sv); | |
794 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
20439bc7 | 795 | SV *const value = cop_hints_fetch_pvs(c, "open<", 0); |
8b850bd5 NC |
796 | assert(value); |
797 | sv_catsv(sv, value); | |
798 | } | |
799 | sv_catpvs(sv, "\0"); | |
800 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
20439bc7 | 801 | SV *const value = cop_hints_fetch_pvs(c, "open>", 0); |
8b850bd5 NC |
802 | assert(value); |
803 | sv_catsv(sv, value); | |
804 | } | |
805 | } | |
806 | } | |
807 | ||
25bbd826 CB |
808 | #ifdef VMS |
809 | #include <descrip.h> | |
810 | #include <starlet.h> | |
811 | #endif | |
812 | ||
79072805 | 813 | int |
864dbfa3 | 814 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 815 | { |
27da23d5 | 816 | dVAR; |
eb578fdb KW |
817 | I32 paren; |
818 | const char *s = NULL; | |
819 | REGEXP *rx; | |
823a54a3 AL |
820 | const char * const remaining = mg->mg_ptr + 1; |
821 | const char nextchar = *remaining; | |
79072805 | 822 | |
7918f24d NC |
823 | PERL_ARGS_ASSERT_MAGIC_GET; |
824 | ||
79072805 | 825 | switch (*mg->mg_ptr) { |
748a9306 | 826 | case '\001': /* ^A */ |
f2da823f FC |
827 | if (SvOK(PL_bodytarget)) sv_copypv(sv, PL_bodytarget); |
828 | else sv_setsv(sv, &PL_sv_undef); | |
125b9982 NT |
829 | if (SvTAINTED(PL_bodytarget)) |
830 | SvTAINTED_on(sv); | |
748a9306 | 831 | break; |
e5218da5 | 832 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 833 | if (nextchar == '\0') { |
e5218da5 GA |
834 | sv_setiv(sv, (IV)PL_minus_c); |
835 | } | |
823a54a3 | 836 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
837 | sv_setiv(sv, (IV)STATUS_NATIVE); |
838 | } | |
49460fe6 NIS |
839 | break; |
840 | ||
79072805 | 841 | case '\004': /* ^D */ |
aea4f609 | 842 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 843 | break; |
28f23441 | 844 | case '\005': /* ^E */ |
823a54a3 | 845 | if (nextchar == '\0') { |
e37778c2 | 846 | #if defined(VMS) |
0a378802 | 847 | { |
0a378802 JH |
848 | char msg[255]; |
849 | $DESCRIPTOR(msgdsc,msg); | |
850 | sv_setnv(sv,(NV) vaxc$errno); | |
851 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
852 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
853 | else | |
76f68e9b | 854 | sv_setpvs(sv,""); |
0a378802 | 855 | } |
4b645107 | 856 | #elif defined(OS2) |
0a378802 JH |
857 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
858 | sv_setnv(sv, (NV)errno); | |
859 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
860 | } else { | |
861 | if (errno != errno_isOS2) { | |
823a54a3 | 862 | const int tmp = _syserrno(); |
0a378802 JH |
863 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
864 | Perl_rc = tmp; | |
865 | } | |
866 | sv_setnv(sv, (NV)Perl_rc); | |
867 | sv_setpv(sv, os2error(Perl_rc)); | |
868 | } | |
4b645107 | 869 | #elif defined(WIN32) |
0a378802 | 870 | { |
d4c19fe8 | 871 | const DWORD dwErr = GetLastError(); |
0a378802 | 872 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 873 | if (dwErr) { |
0a378802 JH |
874 | PerlProc_GetOSError(sv, dwErr); |
875 | } | |
876 | else | |
76f68e9b | 877 | sv_setpvs(sv, ""); |
0a378802 JH |
878 | SetLastError(dwErr); |
879 | } | |
22fae026 | 880 | #else |
f6c8f21d | 881 | { |
4ee39169 | 882 | dSAVE_ERRNO; |
f6c8f21d | 883 | sv_setnv(sv, (NV)errno); |
666ea192 | 884 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 885 | RESTORE_ERRNO; |
f6c8f21d | 886 | } |
28f23441 | 887 | #endif |
ad3296c6 | 888 | SvRTRIM(sv); |
0a378802 JH |
889 | SvNOK_on(sv); /* what a wonderful hack! */ |
890 | } | |
823a54a3 | 891 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
892 | sv_setsv(sv, PL_encoding); |
893 | break; | |
79072805 | 894 | case '\006': /* ^F */ |
3280af22 | 895 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 896 | break; |
9ebf26ad FR |
897 | case '\007': /* ^GLOBAL_PHASE */ |
898 | if (strEQ(remaining, "LOBAL_PHASE")) { | |
899 | sv_setpvn(sv, PL_phase_names[PL_phase], | |
900 | strlen(PL_phase_names[PL_phase])); | |
901 | } | |
902 | break; | |
a0d0e21e | 903 | case '\010': /* ^H */ |
3280af22 | 904 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 905 | break; |
9d116dd7 | 906 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 907 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 908 | break; |
ac27b0f5 | 909 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 910 | if (nextchar == '\0') { |
ac27b0f5 | 911 | sv_setpv(sv, PL_osname); |
3511154c DM |
912 | SvTAINTED_off(sv); |
913 | } | |
823a54a3 | 914 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 915 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 916 | } |
28f23441 | 917 | break; |
9ebf26ad | 918 | case '\020': |
cde0cee5 YO |
919 | if (nextchar == '\0') { /* ^P */ |
920 | sv_setiv(sv, (IV)PL_perldb); | |
921 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2c7b5d76 DM |
922 | |
923 | paren = RX_BUFF_IDX_CARET_PREMATCH; | |
924 | goto do_numbuf_fetch; | |
cde0cee5 | 925 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ |
2c7b5d76 DM |
926 | paren = RX_BUFF_IDX_CARET_POSTMATCH; |
927 | goto do_numbuf_fetch; | |
cde0cee5 | 928 | } |
79072805 | 929 | break; |
fb73857a | 930 | case '\023': /* ^S */ |
823a54a3 | 931 | if (nextchar == '\0') { |
bc177e6b | 932 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 933 | SvOK_off(sv); |
3280af22 | 934 | else if (PL_in_eval) |
6dc8a9e4 | 935 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
936 | else |
937 | sv_setiv(sv, 0); | |
d58bf5aa | 938 | } |
fb73857a | 939 | break; |
79072805 | 940 | case '\024': /* ^T */ |
823a54a3 | 941 | if (nextchar == '\0') { |
88e89b8a | 942 | #ifdef BIG_TIME |
7c36658b | 943 | sv_setnv(sv, PL_basetime); |
88e89b8a | 944 | #else |
7c36658b | 945 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 946 | #endif |
7c36658b | 947 | } |
823a54a3 | 948 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
949 | sv_setiv(sv, PL_tainting |
950 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
951 | : 0); | |
7c36658b | 952 | break; |
e07ea26a | 953 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 954 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 955 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 956 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 957 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
958 | else if (strEQ(remaining, "TF8CACHE")) |
959 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
960 | break; |
961 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 962 | if (nextchar == '\0') |
4438c4b7 | 963 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 964 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 965 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 966 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
967 | } |
968 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
7e4f0450 FC |
969 | sv_setsv(sv, &PL_sv_undef); |
970 | break; | |
013b78e8 | 971 | } |
d3a7d8c7 | 972 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
973 | /* Get the bit mask for $warnings::Bits{all}, because |
974 | * it could have been extended by warnings::register */ | |
4bac9ae4 CS |
975 | HV * const bits = get_hv("warnings::Bits", 0); |
976 | SV ** const bits_all = bits ? hv_fetchs(bits, "all", FALSE) : NULL; | |
977 | if (bits_all) | |
978 | sv_copypv(sv, *bits_all); | |
979 | else | |
980 | sv_setpvn(sv, WARN_ALLstring, WARNsize); | |
ac27b0f5 | 981 | } |
4438c4b7 | 982 | else { |
72dc9ed5 NC |
983 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
984 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 985 | } |
4438c4b7 | 986 | } |
79072805 | 987 | break; |
cde0cee5 YO |
988 | case '\015': /* $^MATCH */ |
989 | if (strEQ(remaining, "ATCH")) { | |
2c7b5d76 DM |
990 | paren = RX_BUFF_IDX_CARET_FULLMATCH; |
991 | goto do_numbuf_fetch; | |
992 | } | |
993 | ||
79072805 LW |
994 | case '1': case '2': case '3': case '4': |
995 | case '5': case '6': case '7': case '8': case '9': case '&': | |
2c7b5d76 DM |
996 | /* |
997 | * Pre-threads, this was paren = atoi(GvENAME((const GV *)mg->mg_obj)); | |
998 | * XXX Does the new way break anything? | |
999 | */ | |
1000 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
1001 | do_numbuf_fetch: | |
1002 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
1003 | CALLREG_NUMBUF_FETCH(rx,paren,sv); | |
1004 | break; | |
1005 | } | |
1006 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
1007 | break; |
1008 | case '+': | |
aaa362c4 | 1009 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2c7b5d76 DM |
1010 | paren = RX_LASTPAREN(rx); |
1011 | if (paren) | |
1012 | goto do_numbuf_fetch; | |
79072805 | 1013 | } |
3280af22 | 1014 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 1015 | break; |
a01268b5 JH |
1016 | case '\016': /* ^N */ |
1017 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
2c7b5d76 DM |
1018 | paren = RX_LASTCLOSEPAREN(rx); |
1019 | if (paren) | |
1020 | goto do_numbuf_fetch; | |
a01268b5 JH |
1021 | } |
1022 | sv_setsv(sv,&PL_sv_undef); | |
1023 | break; | |
79072805 | 1024 | case '`': |
2c7b5d76 DM |
1025 | paren = RX_BUFF_IDX_PREMATCH; |
1026 | goto do_numbuf_fetch; | |
79072805 | 1027 | case '\'': |
2c7b5d76 DM |
1028 | paren = RX_BUFF_IDX_POSTMATCH; |
1029 | goto do_numbuf_fetch; | |
79072805 | 1030 | case '.': |
3280af22 | 1031 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 1032 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 1033 | } |
79072805 LW |
1034 | break; |
1035 | case '?': | |
809a5acc | 1036 | { |
809a5acc | 1037 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 1038 | #ifdef COMPLEX_STATUS |
41cb7b2b | 1039 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
1040 | LvTARGOFF(sv) = PL_statusvalue; |
1041 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 1042 | #endif |
809a5acc | 1043 | } |
79072805 LW |
1044 | break; |
1045 | case '^': | |
acbe1b9d | 1046 | if (GvIOp(PL_defoutgv)) |
099be4f1 | 1047 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
1048 | if (s) |
1049 | sv_setpv(sv,s); | |
1050 | else { | |
3280af22 | 1051 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 1052 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
1053 | } |
1054 | break; | |
1055 | case '~': | |
acbe1b9d | 1056 | if (GvIOp(PL_defoutgv)) |
0daa599b | 1057 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 1058 | if (!s) |
3280af22 | 1059 | s = GvENAME(PL_defoutgv); |
79072805 LW |
1060 | sv_setpv(sv,s); |
1061 | break; | |
79072805 | 1062 | case '=': |
099be4f1 | 1063 | if (GvIO(PL_defoutgv)) |
0daa599b | 1064 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
1065 | break; |
1066 | case '-': | |
099be4f1 | 1067 | if (GvIO(PL_defoutgv)) |
0daa599b | 1068 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
1069 | break; |
1070 | case '%': | |
099be4f1 | 1071 | if (GvIO(PL_defoutgv)) |
0daa599b | 1072 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 | 1073 | break; |
79072805 LW |
1074 | case ':': |
1075 | break; | |
1076 | case '/': | |
1077 | break; | |
1078 | case '[': | |
e1dccc0d | 1079 | sv_setiv(sv, 0); |
79072805 LW |
1080 | break; |
1081 | case '|': | |
099be4f1 | 1082 | if (GvIO(PL_defoutgv)) |
0daa599b | 1083 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 | 1084 | break; |
79072805 | 1085 | case '\\': |
b2ce0fda | 1086 | if (PL_ors_sv) |
f28098ff | 1087 | sv_copypv(sv, PL_ors_sv); |
4bac9ae4 CS |
1088 | else |
1089 | sv_setsv(sv, &PL_sv_undef); | |
79072805 | 1090 | break; |
0e219455 | 1091 | case '$': /* $$ */ |
9cdac2a2 FC |
1092 | { |
1093 | IV const pid = (IV)PerlProc_getpid(); | |
19db9fb7 | 1094 | if (isGV(mg->mg_obj) || SvIV(mg->mg_obj) != pid) { |
9cdac2a2 FC |
1095 | /* never set manually, or at least not since last fork */ |
1096 | sv_setiv(sv, pid); | |
19db9fb7 Z |
1097 | /* never unsafe, even if reading in a tainted expression */ |
1098 | SvTAINTED_off(sv); | |
1099 | } | |
9cdac2a2 FC |
1100 | /* else a value has been assigned manually, so do nothing */ |
1101 | } | |
0e219455 MM |
1102 | break; |
1103 | ||
79072805 | 1104 | case '!': |
666d8aa2 CB |
1105 | { |
1106 | dSAVE_ERRNO; | |
a5f75d66 | 1107 | #ifdef VMS |
65202027 | 1108 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
a5f75d66 | 1109 | #else |
65202027 | 1110 | sv_setnv(sv, (NV)errno); |
666d8aa2 | 1111 | #endif |
88e89b8a | 1112 | #ifdef OS2 |
ed344e4f IZ |
1113 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
1114 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 1115 | else |
a5f75d66 | 1116 | #endif |
666ea192 | 1117 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 1118 | RESTORE_ERRNO; |
88e89b8a | 1119 | } |
666d8aa2 | 1120 | |
ad3296c6 | 1121 | SvRTRIM(sv); |
946ec16e | 1122 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1123 | break; |
1124 | case '<': | |
985213f2 | 1125 | sv_setiv(sv, (IV)PerlProc_getuid()); |
79072805 LW |
1126 | break; |
1127 | case '>': | |
985213f2 | 1128 | sv_setiv(sv, (IV)PerlProc_geteuid()); |
79072805 LW |
1129 | break; |
1130 | case '(': | |
985213f2 | 1131 | sv_setiv(sv, (IV)PerlProc_getgid()); |
79072805 LW |
1132 | goto add_groups; |
1133 | case ')': | |
985213f2 | 1134 | sv_setiv(sv, (IV)PerlProc_getegid()); |
79072805 | 1135 | add_groups: |
79072805 | 1136 | #ifdef HAS_GETGROUPS |
79072805 | 1137 | { |
57d7c65e | 1138 | Groups_t *gary = NULL; |
fb45abb2 | 1139 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1140 | Newx(gary, num_groups, Groups_t); |
1141 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1142 | for (i = 0; i < num_groups; i++) |
1143 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1144 | Safefree(gary); |
79072805 | 1145 | } |
155aba94 | 1146 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1147 | #endif |
79072805 | 1148 | break; |
79072805 LW |
1149 | case '0': |
1150 | break; | |
1151 | } | |
a0d0e21e | 1152 | return 0; |
79072805 LW |
1153 | } |
1154 | ||
1155 | int | |
864dbfa3 | 1156 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1157 | { |
8772537c | 1158 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1159 | |
7918f24d NC |
1160 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1161 | ||
79072805 | 1162 | if (uf && uf->uf_val) |
24f81a43 | 1163 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1164 | return 0; |
1165 | } | |
1166 | ||
1167 | int | |
864dbfa3 | 1168 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1169 | { |
27da23d5 | 1170 | dVAR; |
9ae3433d | 1171 | STRLEN len = 0, klen; |
12033064 | 1172 | const char * const key = MgPV_const(mg,klen); |
613c63b4 | 1173 | const char *s = NULL; |
1e422769 | 1174 | |
7918f24d NC |
1175 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1176 | ||
613c63b4 | 1177 | SvGETMAGIC(sv); |
12033064 | 1178 | if (SvOK(sv)) { |
613c63b4 CS |
1179 | /* defined environment variables are byte strings; unfortunately |
1180 | there is no SvPVbyte_force_nomg(), so we must do this piecewise */ | |
1181 | (void)SvPV_force_nomg_nolen(sv); | |
1182 | sv_utf8_downgrade(sv, /* fail_ok */ TRUE); | |
1183 | if (SvUTF8(sv)) { | |
1184 | Perl_ck_warner_d(aTHX_ packWARN(WARN_UTF8), "Wide character in %s", "setenv"); | |
1185 | SvUTF8_off(sv); | |
1186 | } | |
1187 | s = SvPVX(sv); | |
1188 | len = SvCUR(sv); | |
12033064 CS |
1189 | } |
1190 | my_setenv(key, s); /* does the deed */ | |
1191 | ||
a0d0e21e LW |
1192 | #ifdef DYNAMIC_ENV_FETCH |
1193 | /* We just undefd an environment var. Is a replacement */ | |
1194 | /* waiting in the wings? */ | |
1195 | if (!len) { | |
6bd66ee9 | 1196 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), key, klen, FALSE); |
fabdb6c0 | 1197 | if (valp) |
4ab59fcc | 1198 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1199 | } |
1200 | #endif | |
1e422769 | 1201 | |
39e571d4 | 1202 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1203 | /* And you'll never guess what the dog had */ |
1204 | /* in its mouth... */ | |
3280af22 | 1205 | if (PL_tainting) { |
1e422769 | 1206 | MgTAINTEDDIR_off(mg); |
1207 | #ifdef VMS | |
6bd66ee9 | 1208 | if (s && klen == 8 && strEQ(key, "DCL$PATH")) { |
b8ffc8df | 1209 | char pathbuf[256], eltbuf[256], *cp, *elt; |
1e422769 | 1210 | int i = 0, j = 0; |
1211 | ||
6fca0082 | 1212 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1213 | elt = eltbuf; |
1e422769 | 1214 | do { /* DCL$PATH may be a search list */ |
1215 | while (1) { /* as may dev portion of any element */ | |
1216 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1217 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1218 | cando_by_name(S_IWUSR,0,elt) ) { | |
1219 | MgTAINTEDDIR_on(mg); | |
1220 | return 0; | |
1221 | } | |
1222 | } | |
bd61b366 | 1223 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1224 | *cp = '\0'; |
1225 | if (my_trnlnm(elt, eltbuf, j++)) | |
1226 | elt = eltbuf; | |
1227 | else | |
1228 | break; | |
1229 | } | |
1230 | j = 0; | |
1231 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1232 | } | |
1233 | #endif /* VMS */ | |
12033064 | 1234 | if (s && klen == 4 && strEQ(key,"PATH")) { |
8772537c | 1235 | const char * const strend = s + len; |
463ee0b2 LW |
1236 | |
1237 | while (s < strend) { | |
96827780 | 1238 | char tmpbuf[256]; |
c623ac67 | 1239 | Stat_t st; |
5f74f29c | 1240 | I32 i; |
f5a63d97 AL |
1241 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1242 | const char path_sep = '|'; | |
1243 | #else | |
1244 | const char path_sep = ':'; | |
1245 | #endif | |
96827780 | 1246 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1247 | s, strend, path_sep, &i); |
463ee0b2 | 1248 | s++; |
bb7a0f54 | 1249 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1250 | #ifdef VMS |
1251 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1252 | #else | |
1253 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1254 | #endif | |
c6ed36e1 | 1255 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1256 | MgTAINTEDDIR_on(mg); |
1e422769 | 1257 | return 0; |
1258 | } | |
463ee0b2 | 1259 | } |
79072805 LW |
1260 | } |
1261 | } | |
39e571d4 | 1262 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1263 | |
79072805 LW |
1264 | return 0; |
1265 | } | |
1266 | ||
1267 | int | |
864dbfa3 | 1268 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1269 | { |
7918f24d | 1270 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1271 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1272 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1273 | return 0; |
1274 | } | |
1275 | ||
88e89b8a | 1276 | int |
864dbfa3 | 1277 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1278 | { |
97aff369 | 1279 | dVAR; |
7918f24d | 1280 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1281 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1282 | #if defined(VMS) |
cea2e8a9 | 1283 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1284 | #else |
3280af22 | 1285 | if (PL_localizing) { |
fb73857a | 1286 | HE* entry; |
b0269e46 | 1287 | my_clearenv(); |
85fbaab2 NC |
1288 | hv_iterinit(MUTABLE_HV(sv)); |
1289 | while ((entry = hv_iternext(MUTABLE_HV(sv)))) { | |
fb73857a | 1290 | I32 keylen; |
1291 | my_setenv(hv_iterkey(entry, &keylen), | |
85fbaab2 | 1292 | SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry))); |
fb73857a | 1293 | } |
1294 | } | |
1295 | #endif | |
1296 | return 0; | |
1297 | } | |
1298 | ||
1299 | int | |
864dbfa3 | 1300 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1301 | { |
27da23d5 | 1302 | dVAR; |
7918f24d | 1303 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1304 | PERL_UNUSED_ARG(sv); |
1305 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1306 | #if defined(VMS) |
1307 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1308 | #else | |
1309 | my_clearenv(); | |
1310 | #endif | |
3e3baf6d | 1311 | return 0; |
66b1d557 HM |
1312 | } |
1313 | ||
64ca3a65 | 1314 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1315 | #ifdef HAS_SIGPROCMASK |
1316 | static void | |
1317 | restore_sigmask(pTHX_ SV *save_sv) | |
1318 | { | |
0bd48802 | 1319 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1320 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1321 | } |
1322 | #endif | |
66b1d557 | 1323 | int |
864dbfa3 | 1324 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1325 | { |
97aff369 | 1326 | dVAR; |
88e89b8a | 1327 | /* Are we fetching a signal entry? */ |
708854f2 | 1328 | int i = (I16)mg->mg_private; |
7918f24d NC |
1329 | |
1330 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1331 | ||
708854f2 | 1332 | if (!i) { |
84c7b88c BF |
1333 | STRLEN siglen; |
1334 | const char * sig = MgPV_const(mg, siglen); | |
1335 | mg->mg_private = i = whichsig_pvn(sig, siglen); | |
708854f2 NC |
1336 | } |
1337 | ||
e02bfb16 | 1338 | if (i > 0) { |
22c35a8c GS |
1339 | if(PL_psig_ptr[i]) |
1340 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1341 | else { |
46da273f | 1342 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1343 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1344 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1345 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1346 | #endif |
1347 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1348 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1349 | sigstate = SIG_DFL; | |
85b332e2 | 1350 | #endif |
88e89b8a | 1351 | /* cache state so we don't fetch it again */ |
8aad04aa | 1352 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1353 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1354 | else |
3280af22 | 1355 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1356 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1357 | SvTEMP_off(sv); |
1358 | } | |
1359 | } | |
1360 | return 0; | |
1361 | } | |
1362 | int | |
864dbfa3 | 1363 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1364 | { |
7918f24d | 1365 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
179c85a2 | 1366 | |
38a124f0 | 1367 | magic_setsig(NULL, mg); |
179c85a2 | 1368 | return sv_unmagic(sv, mg->mg_type); |
88e89b8a | 1369 | } |
3d37d572 | 1370 | |
0a8e0eff | 1371 | Signal_t |
8aad04aa | 1372 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1373 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1374 | #else |
0a8e0eff | 1375 | Perl_csighandler(int sig) |
8aad04aa | 1376 | #endif |
0a8e0eff | 1377 | { |
1018e26f NIS |
1378 | #ifdef PERL_GET_SIG_CONTEXT |
1379 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1380 | #else | |
85b332e2 CL |
1381 | dTHX; |
1382 | #endif | |
23ada85b | 1383 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1384 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1385 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1386 | #endif |
2e34cc90 | 1387 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1388 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1389 | #ifdef KILL_BY_SIGPRC |
1390 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1391 | #else | |
1392 | exit(1); | |
1393 | #endif | |
1394 | #endif | |
406878dd | 1395 | if ( |
853d2c32 RGS |
1396 | #ifdef SIGILL |
1397 | sig == SIGILL || | |
1398 | #endif | |
1399 | #ifdef SIGBUS | |
1400 | sig == SIGBUS || | |
1401 | #endif | |
1402 | #ifdef SIGSEGV | |
1403 | sig == SIGSEGV || | |
1404 | #endif | |
1405 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 | 1406 | /* Call the perl level handler now-- |
31c91b43 | 1407 | * with risk we may be in malloc() or being destructed etc. */ |
6e324d09 | 1408 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1409 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1410 | #else |
1411 | (*PL_sighandlerp)(sig); | |
92807b6d | 1412 | #endif |
406878dd | 1413 | else { |
31c91b43 | 1414 | if (!PL_psig_pend) return; |
406878dd GA |
1415 | /* Set a flag to say this signal is pending, that is awaiting delivery after |
1416 | * the current Perl opcode completes */ | |
1417 | PL_psig_pend[sig]++; | |
1418 | ||
1419 | #ifndef SIG_PENDING_DIE_COUNT | |
1420 | # define SIG_PENDING_DIE_COUNT 120 | |
1421 | #endif | |
fe13d51d | 1422 | /* Add one to say _a_ signal is pending */ |
406878dd GA |
1423 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1424 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1425 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
1426 | } | |
0a8e0eff NIS |
1427 | } |
1428 | ||
2e34cc90 CL |
1429 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1430 | void | |
1431 | Perl_csighandler_init(void) | |
1432 | { | |
1433 | int sig; | |
27da23d5 | 1434 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1435 | |
1436 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1437 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1438 | dTHX; |
27da23d5 | 1439 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1440 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1441 | #endif |
1442 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1443 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1444 | #endif |
1445 | } | |
27da23d5 | 1446 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1447 | } |
1448 | #endif | |
1449 | ||
7fe50b8b LT |
1450 | #if defined HAS_SIGPROCMASK |
1451 | static void | |
1452 | unblock_sigmask(pTHX_ void* newset) | |
1453 | { | |
1454 | sigprocmask(SIG_UNBLOCK, (sigset_t*)newset, NULL); | |
1455 | } | |
1456 | #endif | |
1457 | ||
0a8e0eff NIS |
1458 | void |
1459 | Perl_despatch_signals(pTHX) | |
1460 | { | |
97aff369 | 1461 | dVAR; |
0a8e0eff NIS |
1462 | int sig; |
1463 | PL_sig_pending = 0; | |
1464 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1465 | if (PL_psig_pend[sig]) { | |
d0166017 | 1466 | dSAVE_ERRNO; |
7fe50b8b | 1467 | #ifdef HAS_SIGPROCMASK |
55534442 LT |
1468 | /* From sigaction(2) (FreeBSD man page): |
1469 | * | Signal routines normally execute with the signal that | |
1470 | * | caused their invocation blocked, but other signals may | |
1471 | * | yet occur. | |
1472 | * Emulation of this behavior (from within Perl) is enabled | |
1473 | * using sigprocmask | |
1474 | */ | |
1475 | int was_blocked; | |
1476 | sigset_t newset, oldset; | |
1477 | ||
1478 | sigemptyset(&newset); | |
1479 | sigaddset(&newset, sig); | |
1480 | sigprocmask(SIG_BLOCK, &newset, &oldset); | |
1481 | was_blocked = sigismember(&oldset, sig); | |
7fe50b8b LT |
1482 | if (!was_blocked) { |
1483 | SV* save_sv = newSVpvn((char *)(&newset), sizeof(sigset_t)); | |
1484 | ENTER; | |
1485 | SAVEFREESV(save_sv); | |
1486 | SAVEDESTRUCTOR_X(unblock_sigmask, SvPV_nolen(save_sv)); | |
1487 | } | |
55534442 | 1488 | #endif |
25da4428 | 1489 | PL_psig_pend[sig] = 0; |
6e324d09 | 1490 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1491 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1492 | #else |
1493 | (*PL_sighandlerp)(sig); | |
92807b6d | 1494 | #endif |
7fe50b8b | 1495 | #ifdef HAS_SIGPROCMASK |
55534442 | 1496 | if (!was_blocked) |
7fe50b8b | 1497 | LEAVE; |
55534442 | 1498 | #endif |
d0166017 | 1499 | RESTORE_ERRNO; |
0a8e0eff NIS |
1500 | } |
1501 | } | |
1502 | } | |
1503 | ||
38a124f0 | 1504 | /* sv of NULL signifies that we're acting as magic_clearsig. */ |
85e6fe83 | 1505 | int |
864dbfa3 | 1506 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1507 | { |
27da23d5 | 1508 | dVAR; |
79072805 | 1509 | I32 i; |
cbbf8932 | 1510 | SV** svp = NULL; |
2d4fcd5e AJ |
1511 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1512 | * effects (due to closures). We must make sure that the new disposition | |
1513 | * is in place before it is called. | |
1514 | */ | |
cbbf8932 | 1515 | SV* to_dec = NULL; |
e72dc28c | 1516 | STRLEN len; |
2d4fcd5e AJ |
1517 | #ifdef HAS_SIGPROCMASK |
1518 | sigset_t set, save; | |
1519 | SV* save_sv; | |
1520 | #endif | |
eb578fdb | 1521 | const char *s = MgPV_const(mg,len); |
7918f24d NC |
1522 | |
1523 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1524 | ||
748a9306 | 1525 | if (*s == '_') { |
84c7b88c | 1526 | if (memEQs(s, len, "__DIE__")) |
3280af22 | 1527 | svp = &PL_diehook; |
84c7b88c | 1528 | else if (memEQs(s, len, "__WARN__") |
38a124f0 NC |
1529 | && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) { |
1530 | /* Merge the existing behaviours, which are as follows: | |
1531 | magic_setsig, we always set svp to &PL_warnhook | |
1532 | (hence we always change the warnings handler) | |
1533 | For magic_clearsig, we don't change the warnings handler if it's | |
1534 | set to the &PL_warnhook. */ | |
3280af22 | 1535 | svp = &PL_warnhook; |
84c7b88c BF |
1536 | } else if (sv) { |
1537 | SV *tmp = sv_newmortal(); | |
1538 | Perl_croak(aTHX_ "No such hook: %s", | |
1539 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1540 | } | |
748a9306 | 1541 | i = 0; |
38a124f0 | 1542 | if (svp && *svp) { |
9289f461 RGS |
1543 | if (*svp != PERL_WARNHOOK_FATAL) |
1544 | to_dec = *svp; | |
cbbf8932 | 1545 | *svp = NULL; |
4633a7c4 | 1546 | } |
748a9306 LW |
1547 | } |
1548 | else { | |
708854f2 NC |
1549 | i = (I16)mg->mg_private; |
1550 | if (!i) { | |
84c7b88c | 1551 | i = whichsig_pvn(s, len); /* ...no, a brick */ |
58a26b12 | 1552 | mg->mg_private = (U16)i; |
708854f2 | 1553 | } |
86d86cad | 1554 | if (i <= 0) { |
84c7b88c BF |
1555 | if (sv) { |
1556 | SV *tmp = sv_newmortal(); | |
1557 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", | |
1558 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1559 | } | |
748a9306 LW |
1560 | return 0; |
1561 | } | |
2d4fcd5e AJ |
1562 | #ifdef HAS_SIGPROCMASK |
1563 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1564 | sigemptyset(&set); | |
1565 | sigaddset(&set,i); | |
1566 | sigprocmask(SIG_BLOCK, &set, &save); | |
1567 | ENTER; | |
9ff8e806 | 1568 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1569 | SAVEFREESV(save_sv); |
1570 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1571 | #endif | |
1572 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1573 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1574 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1575 | #endif |
23ada85b | 1576 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1577 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1578 | #endif |
2e34cc90 | 1579 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1580 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1581 | #endif |
2d4fcd5e | 1582 | to_dec = PL_psig_ptr[i]; |
38a124f0 NC |
1583 | if (sv) { |
1584 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); | |
1585 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ | |
79fd3822 NC |
1586 | |
1587 | /* Signals don't change name during the program's execution, so once | |
1588 | they're cached in the appropriate slot of PL_psig_name, they can | |
1589 | stay there. | |
1590 | ||
1591 | Ideally we'd find some way of making SVs at (C) compile time, or | |
1592 | at least, doing most of the work. */ | |
1593 | if (!PL_psig_name[i]) { | |
1594 | PL_psig_name[i] = newSVpvn(s, len); | |
1595 | SvREADONLY_on(PL_psig_name[i]); | |
1596 | } | |
38a124f0 | 1597 | } else { |
79fd3822 | 1598 | SvREFCNT_dec(PL_psig_name[i]); |
38a124f0 NC |
1599 | PL_psig_name[i] = NULL; |
1600 | PL_psig_ptr[i] = NULL; | |
1601 | } | |
748a9306 | 1602 | } |
38a124f0 | 1603 | if (sv && (isGV_with_GP(sv) || SvROK(sv))) { |
2d4fcd5e | 1604 | if (i) { |
5c1546dc | 1605 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1606 | } |
748a9306 | 1607 | else |
b37c2d43 | 1608 | *svp = SvREFCNT_inc_simple_NN(sv); |
38a124f0 | 1609 | } else { |
9dfa190b NC |
1610 | if (sv && SvOK(sv)) { |
1611 | s = SvPV_force(sv, len); | |
1612 | } else { | |
1613 | sv = NULL; | |
1614 | } | |
84c7b88c | 1615 | if (sv && memEQs(s, len,"IGNORE")) { |
9dfa190b | 1616 | if (i) { |
23ada85b | 1617 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
9dfa190b NC |
1618 | PL_sig_ignoring[i] = 1; |
1619 | (void)rsignal(i, PL_csighandlerp); | |
85b332e2 | 1620 | #else |
9dfa190b | 1621 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1622 | #endif |
9dfa190b | 1623 | } |
2d4fcd5e | 1624 | } |
84c7b88c | 1625 | else if (!sv || memEQs(s, len,"DEFAULT") || !len) { |
9dfa190b | 1626 | if (i) { |
2e34cc90 | 1627 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
9dfa190b NC |
1628 | PL_sig_defaulting[i] = 1; |
1629 | (void)rsignal(i, PL_csighandlerp); | |
2e34cc90 | 1630 | #else |
9dfa190b | 1631 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1632 | #endif |
9dfa190b NC |
1633 | } |
1634 | } | |
1635 | else { | |
1636 | /* | |
1637 | * We should warn if HINT_STRICT_REFS, but without | |
1638 | * access to a known hint bit in a known OP, we can't | |
1639 | * tell whether HINT_STRICT_REFS is in force or not. | |
1640 | */ | |
1641 | if (!strchr(s,':') && !strchr(s,'\'')) | |
1642 | Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"), | |
1643 | SV_GMAGIC); | |
1644 | if (i) | |
1645 | (void)rsignal(i, PL_csighandlerp); | |
1646 | else | |
1647 | *svp = SvREFCNT_inc_simple_NN(sv); | |
136e0459 | 1648 | } |
748a9306 | 1649 | } |
9dfa190b | 1650 | |
2d4fcd5e AJ |
1651 | #ifdef HAS_SIGPROCMASK |
1652 | if(i) | |
1653 | LEAVE; | |
1654 | #endif | |
ef8d46e8 | 1655 | SvREFCNT_dec(to_dec); |
79072805 LW |
1656 | return 0; |
1657 | } | |
64ca3a65 | 1658 | #endif /* !PERL_MICRO */ |
79072805 LW |
1659 | |
1660 | int | |
864dbfa3 | 1661 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1662 | { |
97aff369 | 1663 | dVAR; |
7918f24d | 1664 | PERL_ARGS_ASSERT_MAGIC_SETISA; |
8772537c | 1665 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1666 | |
89c14e2e | 1667 | /* Skip _isaelem because _isa will handle it shortly */ |
354b0578 | 1668 | if (PL_delaymagic & DM_ARRAY_ISA && mg->mg_type == PERL_MAGIC_isaelem) |
89c14e2e BB |
1669 | return 0; |
1670 | ||
0e446081 | 1671 | return magic_clearisa(NULL, mg); |
463ee0b2 LW |
1672 | } |
1673 | ||
0e446081 | 1674 | /* sv of NULL signifies that we're acting as magic_setisa. */ |
463ee0b2 | 1675 | int |
52b45067 RD |
1676 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1677 | { | |
1678 | dVAR; | |
1679 | HV* stash; | |
1680 | ||
7918f24d NC |
1681 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1682 | ||
52b45067 | 1683 | /* Bail out if destruction is going on */ |
627364f1 | 1684 | if(PL_phase == PERL_PHASE_DESTRUCT) return 0; |
52b45067 | 1685 | |
0e446081 NC |
1686 | if (sv) |
1687 | av_clear(MUTABLE_AV(sv)); | |
52b45067 | 1688 | |
6624142a FC |
1689 | if (SvTYPE(mg->mg_obj) != SVt_PVGV && SvSMAGICAL(mg->mg_obj)) |
1690 | /* This occurs with setisa_elem magic, which calls this | |
1691 | same function. */ | |
1692 | mg = mg_find(mg->mg_obj, PERL_MAGIC_isa); | |
1693 | ||
1694 | if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */ | |
1695 | SV **svp = AvARRAY((AV *)mg->mg_obj); | |
1696 | I32 items = AvFILLp((AV *)mg->mg_obj) + 1; | |
1697 | while (items--) { | |
1698 | stash = GvSTASH((GV *)*svp++); | |
1699 | if (stash && HvENAME(stash)) mro_isa_changed_in(stash); | |
1700 | } | |
1701 | ||
1702 | return 0; | |
1703 | } | |
1704 | ||
52b45067 | 1705 | stash = GvSTASH( |
6624142a | 1706 | (const GV *)mg->mg_obj |
52b45067 RD |
1707 | ); |
1708 | ||
00169e2c FC |
1709 | /* The stash may have been detached from the symbol table, so check its |
1710 | name before doing anything. */ | |
1711 | if (stash && HvENAME_get(stash)) | |
5562fa71 | 1712 | mro_isa_changed_in(stash); |
52b45067 RD |
1713 | |
1714 | return 0; | |
1715 | } | |
1716 | ||
1717 | int | |
864dbfa3 | 1718 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1719 | { |
85fbaab2 | 1720 | HV * const hv = MUTABLE_HV(LvTARG(sv)); |
6ff81951 | 1721 | I32 i = 0; |
7918f24d NC |
1722 | |
1723 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1724 | PERL_UNUSED_ARG(mg); |
7719e241 | 1725 | |
6ff81951 | 1726 | if (hv) { |
497b47a8 | 1727 | (void) hv_iterinit(hv); |
ad64d0ec | 1728 | if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
1b95d04f | 1729 | i = HvUSEDKEYS(hv); |
497b47a8 JH |
1730 | else { |
1731 | while (hv_iternext(hv)) | |
1732 | i++; | |
1733 | } | |
6ff81951 GS |
1734 | } |
1735 | ||
1736 | sv_setiv(sv, (IV)i); | |
1737 | return 0; | |
1738 | } | |
1739 | ||
1740 | int | |
864dbfa3 | 1741 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1742 | { |
7918f24d | 1743 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1744 | PERL_UNUSED_ARG(mg); |
946ec16e | 1745 | if (LvTARG(sv)) { |
85fbaab2 | 1746 | hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv)); |
946ec16e | 1747 | } |
1748 | return 0; | |
ac27b0f5 | 1749 | } |
946ec16e | 1750 | |
efaf3674 DM |
1751 | /* |
1752 | =for apidoc magic_methcall | |
1753 | ||
1754 | Invoke a magic method (like FETCH). | |
1755 | ||
2baee27b FC |
1756 | C<sv> and C<mg> are the tied thingy and the tie magic. |
1757 | ||
1758 | C<meth> is the name of the method to call. | |
1759 | ||
1760 | C<argc> is the number of args (in addition to $self) to pass to the method. | |
1761 | ||
1762 | The C<flags> can be: | |
1763 | ||
1764 | G_DISCARD invoke method with G_DISCARD flag and don't | |
1765 | return a value | |
1766 | G_UNDEF_FILL fill the stack with argc pointers to | |
1767 | PL_sv_undef | |
1768 | ||
1769 | The arguments themselves are any values following the C<flags> argument. | |
efaf3674 DM |
1770 | |
1771 | Returns the SV (if any) returned by the method, or NULL on failure. | |
1772 | ||
1773 | ||
1774 | =cut | |
1775 | */ | |
1776 | ||
1777 | SV* | |
c7a0c747 | 1778 | Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
046b0c7d | 1779 | U32 argc, ...) |
a0d0e21e | 1780 | { |
97aff369 | 1781 | dVAR; |
a0d0e21e | 1782 | dSP; |
efaf3674 | 1783 | SV* ret = NULL; |
463ee0b2 | 1784 | |
7918f24d NC |
1785 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1786 | ||
efaf3674 | 1787 | ENTER; |
d1d7a15d NC |
1788 | |
1789 | if (flags & G_WRITING_TO_STDERR) { | |
1790 | SAVETMPS; | |
1791 | ||
1792 | save_re_context(); | |
1793 | SAVESPTR(PL_stderrgv); | |
1794 | PL_stderrgv = NULL; | |
1795 | } | |
1796 | ||
efaf3674 | 1797 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1798 | PUSHMARK(SP); |
efaf3674 | 1799 | |
67549bd2 NC |
1800 | EXTEND(SP, argc+1); |
1801 | PUSHs(SvTIED_obj(sv, mg)); | |
1802 | if (flags & G_UNDEF_FILL) { | |
1803 | while (argc--) { | |
efaf3674 | 1804 | PUSHs(&PL_sv_undef); |
93965878 | 1805 | } |
67549bd2 | 1806 | } else if (argc > 0) { |
046b0c7d NC |
1807 | va_list args; |
1808 | va_start(args, argc); | |
1809 | ||
1810 | do { | |
1811 | SV *const sv = va_arg(args, SV *); | |
1812 | PUSHs(sv); | |
1813 | } while (--argc); | |
1814 | ||
1815 | va_end(args); | |
88e89b8a | 1816 | } |
463ee0b2 | 1817 | PUTBACK; |
efaf3674 DM |
1818 | if (flags & G_DISCARD) { |
1819 | call_method(meth, G_SCALAR|G_DISCARD); | |
1820 | } | |
1821 | else { | |
1822 | if (call_method(meth, G_SCALAR)) | |
1823 | ret = *PL_stack_sp--; | |
1824 | } | |
1825 | POPSTACK; | |
d1d7a15d NC |
1826 | if (flags & G_WRITING_TO_STDERR) |
1827 | FREETMPS; | |
efaf3674 DM |
1828 | LEAVE; |
1829 | return ret; | |
1830 | } | |
1831 | ||
1832 | ||
1833 | /* wrapper for magic_methcall that creates the first arg */ | |
463ee0b2 | 1834 | |
efaf3674 | 1835 | STATIC SV* |
c7a0c747 | 1836 | S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
efaf3674 DM |
1837 | int n, SV *val) |
1838 | { | |
1839 | dVAR; | |
1840 | SV* arg1 = NULL; | |
1841 | ||
1842 | PERL_ARGS_ASSERT_MAGIC_METHCALL1; | |
1843 | ||
1844 | if (mg->mg_ptr) { | |
1845 | if (mg->mg_len >= 0) { | |
db4b3a1d | 1846 | arg1 = newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
efaf3674 DM |
1847 | } |
1848 | else if (mg->mg_len == HEf_SVKEY) | |
1849 | arg1 = MUTABLE_SV(mg->mg_ptr); | |
1850 | } | |
1851 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { | |
db4b3a1d | 1852 | arg1 = newSViv((IV)(mg->mg_len)); |
efaf3674 DM |
1853 | sv_2mortal(arg1); |
1854 | } | |
1855 | if (!arg1) { | |
046b0c7d | 1856 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n - 1, val); |
efaf3674 | 1857 | } |
046b0c7d | 1858 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n, arg1, val); |
946ec16e | 1859 | } |
1860 | ||
76e3520e | 1861 | STATIC int |
e1ec3a88 | 1862 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1863 | { |
efaf3674 DM |
1864 | dVAR; |
1865 | SV* ret; | |
463ee0b2 | 1866 | |
7918f24d NC |
1867 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1868 | ||
efaf3674 DM |
1869 | ret = magic_methcall1(sv, mg, meth, 0, 1, NULL); |
1870 | if (ret) | |
1871 | sv_setsv(sv, ret); | |
a0d0e21e LW |
1872 | return 0; |
1873 | } | |
463ee0b2 | 1874 | |
a0d0e21e | 1875 | int |
864dbfa3 | 1876 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1877 | { |
7918f24d NC |
1878 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1879 | ||
fd69380d | 1880 | if (mg->mg_type == PERL_MAGIC_tiedelem) |
a0d0e21e | 1881 | mg->mg_flags |= MGf_GSKIP; |
58f82c5c | 1882 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1883 | return 0; |
1884 | } | |
1885 | ||
1886 | int | |
864dbfa3 | 1887 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1888 | { |
efaf3674 | 1889 | dVAR; |
b112cff9 DM |
1890 | MAGIC *tmg; |
1891 | SV *val; | |
7918f24d NC |
1892 | |
1893 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1894 | ||
b112cff9 DM |
1895 | /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to |
1896 | * STORE() is not $val, but rather a PVLV (the sv in this call), whose | |
1897 | * public flags indicate its value based on copying from $val. Doing | |
1898 | * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us. | |
1899 | * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes | |
1900 | * wrong if $val happened to be tainted, as sv hasn't got magic | |
1901 | * enabled, even though taint magic is in the chain. In which case, | |
1902 | * fake up a temporary tainted value (this is easier than temporarily | |
1903 | * re-enabling magic on sv). */ | |
1904 | ||
1905 | if (PL_tainting && (tmg = mg_find(sv, PERL_MAGIC_taint)) | |
1906 | && (tmg->mg_len & 1)) | |
1907 | { | |
1908 | val = sv_mortalcopy(sv); | |
1909 | SvTAINTED_on(val); | |
1910 | } | |
1911 | else | |
1912 | val = sv; | |
1913 | ||
efaf3674 | 1914 | magic_methcall1(sv, mg, "STORE", G_DISCARD, 2, val); |
463ee0b2 LW |
1915 | return 0; |
1916 | } | |
1917 | ||
1918 | int | |
864dbfa3 | 1919 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1920 | { |
7918f24d NC |
1921 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1922 | ||
4c13be3f | 1923 | if (mg->mg_type == PERL_MAGIC_tiedscalar) return 0; |
a0d0e21e LW |
1924 | return magic_methpack(sv,mg,"DELETE"); |
1925 | } | |
463ee0b2 | 1926 | |
93965878 NIS |
1927 | |
1928 | U32 | |
864dbfa3 | 1929 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1930 | { |
efaf3674 | 1931 | dVAR; |
22846ab4 | 1932 | I32 retval = 0; |
efaf3674 | 1933 | SV* retsv; |
93965878 | 1934 | |
7918f24d NC |
1935 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1936 | ||
efaf3674 DM |
1937 | retsv = magic_methcall1(sv, mg, "FETCHSIZE", 0, 1, NULL); |
1938 | if (retsv) { | |
1939 | retval = SvIV(retsv)-1; | |
22846ab4 AB |
1940 | if (retval < -1) |
1941 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1942 | } |
22846ab4 | 1943 | return (U32) retval; |
93965878 NIS |
1944 | } |
1945 | ||
cea2e8a9 GS |
1946 | int |
1947 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1948 | { |
efaf3674 | 1949 | dVAR; |
463ee0b2 | 1950 | |
7918f24d NC |
1951 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1952 | ||
046b0c7d | 1953 | Perl_magic_methcall(aTHX_ sv, mg, "CLEAR", G_DISCARD, 0); |
463ee0b2 LW |
1954 | return 0; |
1955 | } | |
1956 | ||
1957 | int | |
864dbfa3 | 1958 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1959 | { |
efaf3674 DM |
1960 | dVAR; |
1961 | SV* ret; | |
463ee0b2 | 1962 | |
7918f24d NC |
1963 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1964 | ||
046b0c7d NC |
1965 | ret = SvOK(key) ? Perl_magic_methcall(aTHX_ sv, mg, "NEXTKEY", 0, 1, key) |
1966 | : Perl_magic_methcall(aTHX_ sv, mg, "FIRSTKEY", 0, 0); | |
efaf3674 DM |
1967 | if (ret) |
1968 | sv_setsv(key,ret); | |
79072805 LW |
1969 | return 0; |
1970 | } | |
1971 | ||
1972 | int | |
1146e912 | 1973 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1974 | { |
7918f24d NC |
1975 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1976 | ||
a0d0e21e | 1977 | return magic_methpack(sv,mg,"EXISTS"); |
ac27b0f5 | 1978 | } |
a0d0e21e | 1979 | |
a3bcc51e TP |
1980 | SV * |
1981 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1982 | { | |
efaf3674 | 1983 | dVAR; |
5fcbf73d | 1984 | SV *retval; |
ad64d0ec NC |
1985 | SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg); |
1986 | HV * const pkg = SvSTASH((const SV *)SvRV(tied)); | |
a3bcc51e | 1987 | |
7918f24d NC |
1988 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
1989 | ||
a3bcc51e TP |
1990 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1991 | SV *key; | |
bfcb3514 | 1992 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1993 | /* we are in an iteration so the hash cannot be empty */ |
1994 | return &PL_sv_yes; | |
1995 | /* no xhv_eiter so now use FIRSTKEY */ | |
1996 | key = sv_newmortal(); | |
ad64d0ec | 1997 | magic_nextpack(MUTABLE_SV(hv), mg, key); |
bfcb3514 | 1998 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1999 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
2000 | } | |
2001 | ||
2002 | /* there is a SCALAR method that we can call */ | |
046b0c7d | 2003 | retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(hv), mg, "SCALAR", 0, 0); |
efaf3674 | 2004 | if (!retval) |
5fcbf73d | 2005 | retval = &PL_sv_undef; |
a3bcc51e TP |
2006 | return retval; |
2007 | } | |
2008 | ||
a0d0e21e | 2009 | int |
864dbfa3 | 2010 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2011 | { |
97aff369 | 2012 | dVAR; |
8772537c AL |
2013 | GV * const gv = PL_DBline; |
2014 | const I32 i = SvTRUE(sv); | |
2015 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 2016 | atoi(MgPV_nolen_const(mg)), FALSE); |
7918f24d NC |
2017 | |
2018 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
2019 | ||
8772537c AL |
2020 | if (svp && SvIOKp(*svp)) { |
2021 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
2022 | if (o) { | |
7bbbc3c0 NC |
2023 | #ifdef PERL_DEBUG_READONLY_OPS |
2024 | Slab_to_rw(OpSLAB(o)); | |
2025 | #endif | |
8772537c AL |
2026 | /* set or clear breakpoint in the relevant control op */ |
2027 | if (i) | |
2028 | o->op_flags |= OPf_SPECIAL; | |
2029 | else | |
2030 | o->op_flags &= ~OPf_SPECIAL; | |
7bbbc3c0 NC |
2031 | #ifdef PERL_DEBUG_READONLY_OPS |
2032 | Slab_to_ro(OpSLAB(o)); | |
2033 | #endif | |
8772537c | 2034 | } |
5df8de69 | 2035 | } |
79072805 LW |
2036 | return 0; |
2037 | } | |
2038 | ||
2039 | int | |
8772537c | 2040 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 2041 | { |
97aff369 | 2042 | dVAR; |
502c6561 | 2043 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2044 | |
2045 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
2046 | ||
83bf042f | 2047 | if (obj) { |
e1dccc0d | 2048 | sv_setiv(sv, AvFILL(obj)); |
83bf042f NC |
2049 | } else { |
2050 | SvOK_off(sv); | |
2051 | } | |
79072805 LW |
2052 | return 0; |
2053 | } | |
2054 | ||
2055 | int | |
864dbfa3 | 2056 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2057 | { |
97aff369 | 2058 | dVAR; |
502c6561 | 2059 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2060 | |
2061 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
2062 | ||
83bf042f | 2063 | if (obj) { |
e1dccc0d | 2064 | av_fill(obj, SvIV(sv)); |
83bf042f | 2065 | } else { |
a2a5de95 NC |
2066 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
2067 | "Attempt to set length of freed array"); | |
83bf042f NC |
2068 | } |
2069 | return 0; | |
2070 | } | |
2071 | ||
2072 | int | |
83f29afa VP |
2073 | Perl_magic_cleararylen_p(pTHX_ SV *sv, MAGIC *mg) |
2074 | { | |
2075 | dVAR; | |
2076 | ||
2077 | PERL_ARGS_ASSERT_MAGIC_CLEARARYLEN_P; | |
2078 | PERL_UNUSED_ARG(sv); | |
2079 | ||
2080 | /* Reset the iterator when the array is cleared */ | |
3565fbf3 VP |
2081 | #if IVSIZE == I32SIZE |
2082 | *((IV *) &(mg->mg_len)) = 0; | |
2083 | #else | |
83f29afa VP |
2084 | if (mg->mg_ptr) |
2085 | *((IV *) mg->mg_ptr) = 0; | |
3565fbf3 | 2086 | #endif |
83f29afa VP |
2087 | |
2088 | return 0; | |
2089 | } | |
2090 | ||
2091 | int | |
83bf042f NC |
2092 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) |
2093 | { | |
97aff369 | 2094 | dVAR; |
7918f24d NC |
2095 | |
2096 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; | |
53c1dcc0 | 2097 | PERL_UNUSED_ARG(sv); |
7918f24d | 2098 | |
94f3782b DM |
2099 | /* during global destruction, mg_obj may already have been freed */ |
2100 | if (PL_in_clean_all) | |
1ea47f64 | 2101 | return 0; |
94f3782b | 2102 | |
83bf042f NC |
2103 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
2104 | ||
2105 | if (mg) { | |
2106 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
2107 | reference. Hence the we (the array) are about to go away with it | |
2108 | still pointing at us. Clear its pointer, else it would be pointing | |
2109 | at free memory. See the comment in sv_magic about reference loops, | |
2110 | and why it can't own a reference to us. */ | |
2111 | mg->mg_obj = 0; | |
2112 | } | |
a0d0e21e LW |
2113 | return 0; |
2114 | } | |
2115 | ||
2116 | int | |
864dbfa3 | 2117 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2118 | { |
97aff369 | 2119 | dVAR; |
16eb5365 | 2120 | SV* const lsv = LvTARG(sv); |
7918f24d NC |
2121 | |
2122 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
16eb5365 | 2123 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2124 | |
a0d0e21e | 2125 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
2126 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
2127 | if (found && found->mg_len >= 0) { | |
2128 | I32 i = found->mg_len; | |
7e2040f0 | 2129 | if (DO_UTF8(lsv)) |
a0ed51b3 | 2130 | sv_pos_b2u(lsv, &i); |
e1dccc0d | 2131 | sv_setiv(sv, i); |
a0d0e21e LW |
2132 | return 0; |
2133 | } | |
2134 | } | |
0c34ef67 | 2135 | SvOK_off(sv); |
a0d0e21e LW |
2136 | return 0; |
2137 | } | |
2138 | ||
2139 | int | |
864dbfa3 | 2140 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2141 | { |
97aff369 | 2142 | dVAR; |
16eb5365 | 2143 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
2144 | SSize_t pos; |
2145 | STRLEN len; | |
c00206c8 | 2146 | STRLEN ulen = 0; |
53d44271 | 2147 | MAGIC* found; |
a0d0e21e | 2148 | |
7918f24d | 2149 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
16eb5365 | 2150 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2151 | |
a0d0e21e | 2152 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
2153 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
2154 | else | |
2155 | found = NULL; | |
2156 | if (!found) { | |
a0d0e21e LW |
2157 | if (!SvOK(sv)) |
2158 | return 0; | |
d83f0a82 NC |
2159 | #ifdef PERL_OLD_COPY_ON_WRITE |
2160 | if (SvIsCOW(lsv)) | |
2161 | sv_force_normal_flags(lsv, 0); | |
2162 | #endif | |
3881461a | 2163 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 2164 | NULL, 0); |
a0d0e21e LW |
2165 | } |
2166 | else if (!SvOK(sv)) { | |
3881461a | 2167 | found->mg_len = -1; |
a0d0e21e LW |
2168 | return 0; |
2169 | } | |
4bac9ae4 | 2170 | len = SvPOK_nog(lsv) ? SvCUR(lsv) : sv_len(lsv); |
a0d0e21e | 2171 | |
e1dccc0d | 2172 | pos = SvIV(sv); |
a0ed51b3 | 2173 | |
7e2040f0 | 2174 | if (DO_UTF8(lsv)) { |
92cf6698 | 2175 | ulen = sv_len_utf8_nomg(lsv); |
a0ed51b3 LW |
2176 | if (ulen) |
2177 | len = ulen; | |
a0ed51b3 LW |
2178 | } |
2179 | ||
a0d0e21e LW |
2180 | if (pos < 0) { |
2181 | pos += len; | |
2182 | if (pos < 0) | |
2183 | pos = 0; | |
2184 | } | |
eb160463 | 2185 | else if (pos > (SSize_t)len) |
a0d0e21e | 2186 | pos = len; |
a0ed51b3 LW |
2187 | |
2188 | if (ulen) { | |
92cf6698 | 2189 | pos = sv_pos_u2b_flags(lsv, pos, 0, 0); |
a0ed51b3 | 2190 | } |
727405f8 | 2191 | |
3881461a AL |
2192 | found->mg_len = pos; |
2193 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 2194 | |
79072805 LW |
2195 | return 0; |
2196 | } | |
2197 | ||
2198 | int | |
864dbfa3 | 2199 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2200 | { |
2201 | STRLEN len; | |
35a4481c | 2202 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2203 | const char * const tmps = SvPV_const(lsv,len); |
777f7c56 EB |
2204 | STRLEN offs = LvTARGOFF(sv); |
2205 | STRLEN rem = LvTARGLEN(sv); | |
83f78d1a FC |
2206 | const bool negoff = LvFLAGS(sv) & 1; |
2207 | const bool negrem = LvFLAGS(sv) & 2; | |
7918f24d NC |
2208 | |
2209 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2210 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2211 | |
83f78d1a | 2212 | if (!translate_substr_offsets( |
a4036ec1 | 2213 | SvUTF8(lsv) ? sv_len_utf8_nomg(lsv) : len, |
83f78d1a FC |
2214 | negoff ? -(IV)offs : (IV)offs, !negoff, |
2215 | negrem ? -(IV)rem : (IV)rem, !negrem, &offs, &rem | |
2216 | )) { | |
2217 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string"); | |
2218 | sv_setsv_nomg(sv, &PL_sv_undef); | |
2219 | return 0; | |
2220 | } | |
2221 | ||
9aa983d2 | 2222 | if (SvUTF8(lsv)) |
d931b1be | 2223 | offs = sv_pos_u2b_flags(lsv, offs, &rem, SV_CONST_RETURN); |
1c900557 | 2224 | sv_setpvn(sv, tmps + offs, rem); |
9aa983d2 | 2225 | if (SvUTF8(lsv)) |
2ef4b674 | 2226 | SvUTF8_on(sv); |
6ff81951 GS |
2227 | return 0; |
2228 | } | |
2229 | ||
2230 | int | |
864dbfa3 | 2231 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2232 | { |
97aff369 | 2233 | dVAR; |
83f78d1a | 2234 | STRLEN len, lsv_len, oldtarglen, newtarglen; |
5fcbf73d | 2235 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2236 | SV * const lsv = LvTARG(sv); |
777f7c56 EB |
2237 | STRLEN lvoff = LvTARGOFF(sv); |
2238 | STRLEN lvlen = LvTARGLEN(sv); | |
83f78d1a FC |
2239 | const bool negoff = LvFLAGS(sv) & 1; |
2240 | const bool neglen = LvFLAGS(sv) & 2; | |
7918f24d NC |
2241 | |
2242 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2243 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2244 | |
a74fb2cd FC |
2245 | SvGETMAGIC(lsv); |
2246 | if (SvROK(lsv)) | |
2247 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), | |
2248 | "Attempt to use reference as lvalue in substr" | |
2249 | ); | |
ab445a17 | 2250 | if (SvUTF8(lsv)) lsv_len = sv_len_utf8_nomg(lsv); |
83f78d1a FC |
2251 | else (void)SvPV_nomg(lsv,lsv_len); |
2252 | if (!translate_substr_offsets( | |
2253 | lsv_len, | |
2254 | negoff ? -(IV)lvoff : (IV)lvoff, !negoff, | |
2255 | neglen ? -(IV)lvlen : (IV)lvlen, !neglen, &lvoff, &lvlen | |
2256 | )) | |
2257 | Perl_croak(aTHX_ "substr outside of string"); | |
2258 | oldtarglen = lvlen; | |
1aa99e6b | 2259 | if (DO_UTF8(sv)) { |
9aa983d2 | 2260 | sv_utf8_upgrade(lsv); |
d931b1be | 2261 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
a74fb2cd | 2262 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2263 | newtarglen = sv_len_utf8(sv); |
9aa983d2 JH |
2264 | SvUTF8_on(lsv); |
2265 | } | |
9bf12eaf | 2266 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 2267 | const char *utf8; |
d931b1be | 2268 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
83f78d1a | 2269 | newtarglen = len; |
5fcbf73d | 2270 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
a74fb2cd | 2271 | sv_insert_flags(lsv, lvoff, lvlen, utf8, len, 0); |
5fcbf73d | 2272 | Safefree(utf8); |
1aa99e6b | 2273 | } |
b76f3ce2 | 2274 | else { |
a74fb2cd | 2275 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2276 | newtarglen = len; |
b76f3ce2 | 2277 | } |
83f78d1a FC |
2278 | if (!neglen) LvTARGLEN(sv) = newtarglen; |
2279 | if (negoff) LvTARGOFF(sv) += newtarglen - oldtarglen; | |
b76f3ce2 | 2280 | |
79072805 LW |
2281 | return 0; |
2282 | } | |
2283 | ||
2284 | int | |
864dbfa3 | 2285 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2286 | { |
97aff369 | 2287 | dVAR; |
7918f24d NC |
2288 | |
2289 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; | |
8772537c | 2290 | PERL_UNUSED_ARG(sv); |
7918f24d | 2291 | |
27cc343c | 2292 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2293 | return 0; |
2294 | } | |
2295 | ||
2296 | int | |
864dbfa3 | 2297 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2298 | { |
97aff369 | 2299 | dVAR; |
7918f24d NC |
2300 | |
2301 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; | |
8772537c | 2302 | PERL_UNUSED_ARG(sv); |
7918f24d | 2303 | |
b01e650a DM |
2304 | /* update taint status */ |
2305 | if (PL_tainted) | |
2306 | mg->mg_len |= 1; | |
2307 | else | |
2308 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2309 | return 0; |
2310 | } | |
2311 | ||
2312 | int | |
864dbfa3 | 2313 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2314 | { |
35a4481c | 2315 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2316 | |
2317 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2318 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2319 | |
6136c704 AL |
2320 | if (lsv) |
2321 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2322 | else | |
0c34ef67 | 2323 | SvOK_off(sv); |
6ff81951 | 2324 | |
6ff81951 GS |
2325 | return 0; |
2326 | } | |
2327 | ||
2328 | int | |
864dbfa3 | 2329 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2330 | { |
7918f24d | 2331 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2332 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2333 | do_vecset(sv); /* XXX slurp this routine */ |
2334 | return 0; | |
2335 | } | |
2336 | ||
2337 | int | |
864dbfa3 | 2338 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 2339 | { |
97aff369 | 2340 | dVAR; |
a0714e2c | 2341 | SV *targ = NULL; |
7918f24d NC |
2342 | |
2343 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2344 | ||
5f05dabc | 2345 | if (LvTARGLEN(sv)) { |
68dc0745 | 2346 | if (mg->mg_obj) { |
8772537c | 2347 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2348 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0); |
6d822dc4 MS |
2349 | if (he) |
2350 | targ = HeVAL(he); | |
68dc0745 | 2351 | } |
2352 | else { | |
502c6561 | 2353 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
68dc0745 | 2354 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2355 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2356 | } | |
46da273f | 2357 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2358 | /* somebody else defined it for us */ |
2359 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2360 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2361 | LvTARGLEN(sv) = 0; |
2362 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2363 | mg->mg_obj = NULL; |
68dc0745 | 2364 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2365 | } | |
5f05dabc | 2366 | } |
71be2cbc | 2367 | else |
2368 | targ = LvTARG(sv); | |
3280af22 | 2369 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 2370 | return 0; |
2371 | } | |
2372 | ||
2373 | int | |
864dbfa3 | 2374 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2375 | { |
7918f24d | 2376 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2377 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2378 | if (LvTARGLEN(sv)) |
68dc0745 | 2379 | vivify_defelem(sv); |
2380 | if (LvTARG(sv)) { | |
5f05dabc | 2381 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2382 | SvSETMAGIC(LvTARG(sv)); |
2383 | } | |
5f05dabc | 2384 | return 0; |
2385 | } | |
2386 | ||
71be2cbc | 2387 | void |
864dbfa3 | 2388 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2389 | { |
97aff369 | 2390 | dVAR; |
74e13ce4 | 2391 | MAGIC *mg; |
a0714e2c | 2392 | SV *value = NULL; |
71be2cbc | 2393 | |
7918f24d NC |
2394 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2395 | ||
14befaf4 | 2396 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2397 | return; |
68dc0745 | 2398 | if (mg->mg_obj) { |
8772537c | 2399 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2400 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0); |
6d822dc4 MS |
2401 | if (he) |
2402 | value = HeVAL(he); | |
3280af22 | 2403 | if (!value || value == &PL_sv_undef) |
be2597df | 2404 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2405 | } |
68dc0745 | 2406 | else { |
502c6561 | 2407 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
5aabfad6 | 2408 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2409 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2410 | else { |
d4c19fe8 | 2411 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2412 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2413 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2414 | } |
2415 | } | |
b37c2d43 | 2416 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2417 | SvREFCNT_dec(LvTARG(sv)); |
2418 | LvTARG(sv) = value; | |
71be2cbc | 2419 | LvTARGLEN(sv) = 0; |
68dc0745 | 2420 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2421 | mg->mg_obj = NULL; |
68dc0745 | 2422 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2423 | } |
2424 | ||
2425 | int | |
864dbfa3 | 2426 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2427 | { |
7918f24d | 2428 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
5648c0ae DM |
2429 | Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj)); |
2430 | return 0; | |
810b8aa5 GS |
2431 | } |
2432 | ||
2433 | int | |
864dbfa3 | 2434 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2435 | { |
7918f24d | 2436 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2437 | PERL_UNUSED_CONTEXT; |
0177730e | 2438 | PERL_UNUSED_ARG(sv); |
565764a8 | 2439 | mg->mg_len = -1; |
93a17b20 LW |
2440 | return 0; |
2441 | } | |
2442 | ||
2443 | int | |
864dbfa3 | 2444 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2445 | { |
35a4481c | 2446 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2447 | |
7918f24d NC |
2448 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2449 | ||
79072805 | 2450 | if (uf && uf->uf_set) |
24f81a43 | 2451 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2452 | return 0; |
2453 | } | |
2454 | ||
c277df42 | 2455 | int |
faf82a0b AE |
2456 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2457 | { | |
488344d2 | 2458 | const char type = mg->mg_type; |
7918f24d NC |
2459 | |
2460 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2461 | ||
488344d2 NC |
2462 | if (type == PERL_MAGIC_qr) { |
2463 | } else if (type == PERL_MAGIC_bm) { | |
2464 | SvTAIL_off(sv); | |
2465 | SvVALID_off(sv); | |
2466 | } else { | |
2467 | assert(type == PERL_MAGIC_fm); | |
488344d2 NC |
2468 | } |
2469 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2470 | } |
2471 | ||
7a4c00b4 | 2472 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2473 | int |
864dbfa3 | 2474 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2475 | { |
7918f24d NC |
2476 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2477 | ||
bbce6d69 | 2478 | /* |
838b5b74 | 2479 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2480 | * and vanished with a faint plop. |
2481 | */ | |
96a5add6 | 2482 | PERL_UNUSED_CONTEXT; |
8772537c | 2483 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2484 | if (mg->mg_ptr) { |
2485 | Safefree(mg->mg_ptr); | |
2486 | mg->mg_ptr = NULL; | |
565764a8 | 2487 | mg->mg_len = -1; |
7a4c00b4 | 2488 | } |
bbce6d69 | 2489 | return 0; |
2490 | } | |
7a4c00b4 | 2491 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2492 | |
7e8c5dac HS |
2493 | /* Just clear the UTF-8 cache data. */ |
2494 | int | |
2495 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2496 | { | |
7918f24d | 2497 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2498 | PERL_UNUSED_CONTEXT; |
8772537c | 2499 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2500 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2501 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2502 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2503 | return 0; | |
2504 | } | |
2505 | ||
bbce6d69 | 2506 | int |
864dbfa3 | 2507 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2508 | { |
97aff369 | 2509 | dVAR; |
eb578fdb KW |
2510 | const char *s; |
2511 | I32 paren; | |
2512 | const REGEXP * rx; | |
2fdbfb4d | 2513 | const char * const remaining = mg->mg_ptr + 1; |
79072805 | 2514 | I32 i; |
8990e307 | 2515 | STRLEN len; |
125b9982 | 2516 | MAGIC *tmg; |
2fdbfb4d | 2517 | |
7918f24d NC |
2518 | PERL_ARGS_ASSERT_MAGIC_SET; |
2519 | ||
79072805 | 2520 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
2521 | case '\015': /* $^MATCH */ |
2522 | if (strEQ(remaining, "ATCH")) | |
2523 | goto do_match; | |
2524 | case '`': /* ${^PREMATCH} caught below */ | |
2525 | do_prematch: | |
f1b875a0 | 2526 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
2527 | goto setparen; |
2528 | case '\'': /* ${^POSTMATCH} caught below */ | |
2529 | do_postmatch: | |
f1b875a0 | 2530 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
2531 | goto setparen; |
2532 | case '&': | |
2533 | do_match: | |
f1b875a0 | 2534 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d AB |
2535 | goto setparen; |
2536 | case '1': case '2': case '3': case '4': | |
2537 | case '5': case '6': case '7': case '8': case '9': | |
104a8018 | 2538 | paren = atoi(mg->mg_ptr); |
2fdbfb4d | 2539 | setparen: |
1e05feb3 | 2540 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9bad346 | 2541 | setparen_got_rx: |
2fdbfb4d | 2542 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
1e05feb3 | 2543 | } else { |
2fdbfb4d AB |
2544 | /* Croak with a READONLY error when a numbered match var is |
2545 | * set without a previous pattern match. Unless it's C<local $1> | |
2546 | */ | |
d9bad346 | 2547 | croakparen: |
2fdbfb4d | 2548 | if (!PL_localizing) { |
6ad8f254 | 2549 | Perl_croak_no_modify(aTHX); |
2fdbfb4d AB |
2550 | } |
2551 | } | |
9b9e0be4 | 2552 | break; |
748a9306 | 2553 | case '\001': /* ^A */ |
f2da823f FC |
2554 | if (SvOK(sv)) sv_copypv(PL_bodytarget, sv); |
2555 | else SvOK_off(PL_bodytarget); | |
64eff8b7 DM |
2556 | FmLINES(PL_bodytarget) = 0; |
2557 | if (SvPOK(PL_bodytarget)) { | |
2558 | char *s = SvPVX(PL_bodytarget); | |
2559 | while ( ((s = strchr(s, '\n'))) ) { | |
2560 | FmLINES(PL_bodytarget)++; | |
2561 | s++; | |
2562 | } | |
2563 | } | |
125b9982 NT |
2564 | /* mg_set() has temporarily made sv non-magical */ |
2565 | if (PL_tainting) { | |
2566 | if ((tmg = mg_find(sv,PERL_MAGIC_taint)) && tmg->mg_len & 1) | |
2567 | SvTAINTED_on(PL_bodytarget); | |
2568 | else | |
2569 | SvTAINTED_off(PL_bodytarget); | |
2570 | } | |
748a9306 | 2571 | break; |
49460fe6 | 2572 | case '\003': /* ^C */ |
f2338a2e | 2573 | PL_minus_c = cBOOL(SvIV(sv)); |
49460fe6 NIS |
2574 | break; |
2575 | ||
79072805 | 2576 | case '\004': /* ^D */ |
b4ab917c | 2577 | #ifdef DEBUGGING |
b83604b4 | 2578 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2579 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
a58fb6f9 CS |
2580 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
2581 | dump_all_perl(!DEBUG_B_TEST); | |
b4ab917c | 2582 | #else |
38ab35f8 | 2583 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2584 | #endif |
79072805 | 2585 | break; |
28f23441 | 2586 | case '\005': /* ^E */ |
d0063567 | 2587 | if (*(mg->mg_ptr+1) == '\0') { |
e37778c2 | 2588 | #ifdef VMS |
38ab35f8 | 2589 | set_vaxc_errno(SvIV(sv)); |
e37778c2 NC |
2590 | #else |
2591 | # ifdef WIN32 | |
d0063567 | 2592 | SetLastError( SvIV(sv) ); |
e37778c2 NC |
2593 | # else |
2594 | # ifdef OS2 | |
38ab35f8 | 2595 | os2_setsyserrno(SvIV(sv)); |
e37778c2 | 2596 | # else |
d0063567 | 2597 | /* will anyone ever use this? */ |
38ab35f8 | 2598 | SETERRNO(SvIV(sv), 4); |
048c1ddf IZ |
2599 | # endif |
2600 | # endif | |
22fae026 | 2601 | #endif |
d0063567 DK |
2602 | } |
2603 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
ef8d46e8 | 2604 | SvREFCNT_dec(PL_encoding); |
d0063567 DK |
2605 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2606 | PL_encoding = newSVsv(sv); | |
2607 | } | |
2608 | else { | |
a0714e2c | 2609 | PL_encoding = NULL; |
d0063567 DK |
2610 | } |
2611 | } | |
2612 | break; | |
79072805 | 2613 | case '\006': /* ^F */ |
38ab35f8 | 2614 | PL_maxsysfd = SvIV(sv); |
79072805 | 2615 | break; |
a0d0e21e | 2616 | case '\010': /* ^H */ |
38ab35f8 | 2617 | PL_hints = SvIV(sv); |
a0d0e21e | 2618 | break; |
9d116dd7 | 2619 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2620 | Safefree(PL_inplace); |
bd61b366 | 2621 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2622 | break; |
d9bad346 FC |
2623 | case '\016': /* ^N */ |
2624 | if (PL_curpm && (rx = PM_GETRE(PL_curpm)) | |
2625 | && (paren = RX_LASTCLOSEPAREN(rx))) goto setparen_got_rx; | |
2626 | goto croakparen; | |
28f23441 | 2627 | case '\017': /* ^O */ |
ac27b0f5 | 2628 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2629 | Safefree(PL_osname); |
bd61b366 | 2630 | PL_osname = NULL; |
3511154c DM |
2631 | if (SvOK(sv)) { |
2632 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2633 | PL_osname = savesvpv(sv); |
3511154c | 2634 | } |
ac27b0f5 NIS |
2635 | } |
2636 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2637 | STRLEN len; |
2638 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2639 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 | 2640 | SV *tmp; |
8b850bd5 NC |
2641 | |
2642 | ||
2643 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
f747ebd6 | 2644 | PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; |
8b850bd5 NC |
2645 | |
2646 | /* Opening for input is more common than opening for output, so | |
2647 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 | 2648 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
f747ebd6 Z |
2649 | SvUTF8(sv)) |
2650 | : newSVpvs_flags("", SvUTF8(sv)); | |
2651 | (void)hv_stores(GvHV(PL_hintgv), "open>", tmp); | |
2652 | mg_set(tmp); | |
8b850bd5 | 2653 | |
f747ebd6 Z |
2654 | tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len, |
2655 | SvUTF8(sv)); | |
2656 | (void)hv_stores(GvHV(PL_hintgv), "open<", tmp); | |
2657 | mg_set(tmp); | |
ac27b0f5 | 2658 | } |
28f23441 | 2659 | break; |
79072805 | 2660 | case '\020': /* ^P */ |
2fdbfb4d AB |
2661 | if (*remaining == '\0') { /* ^P */ |
2662 | PL_perldb = SvIV(sv); | |
2663 | if (PL_perldb && !PL_DBsingle) | |
2664 | init_debugger(); | |
2665 | break; | |
2666 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2667 | goto do_prematch; | |
2668 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
2669 | goto do_postmatch; | |
2670 | } | |
9b9e0be4 | 2671 | break; |
79072805 | 2672 | case '\024': /* ^T */ |
88e89b8a | 2673 | #ifdef BIG_TIME |
6b88bc9c | 2674 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2675 | #else |
38ab35f8 | 2676 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2677 | #endif |
79072805 | 2678 | break; |
e07ea26a NC |
2679 | case '\025': /* ^UTF8CACHE */ |
2680 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2681 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2682 | } | |
2683 | break; | |
fde18df1 | 2684 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2685 | if (*(mg->mg_ptr+1) == '\0') { |
2686 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2687 | i = SvIV(sv); |
ac27b0f5 | 2688 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2689 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2690 | } |
599cee73 | 2691 | } |
0a378802 | 2692 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2693 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
7e4f0450 FC |
2694 | if (!SvPOK(sv)) { |
2695 | PL_compiling.cop_warnings = pWARN_STD; | |
d775746e GS |
2696 | break; |
2697 | } | |
f4fc7782 | 2698 | { |
b5477537 | 2699 | STRLEN len, i; |
d3a7d8c7 | 2700 | int accumulate = 0 ; |
f4fc7782 | 2701 | int any_fatals = 0 ; |
b83604b4 | 2702 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2703 | for (i = 0 ; i < len ; ++i) { |
2704 | accumulate |= ptr[i] ; | |
2705 | any_fatals |= (ptr[i] & 0xAA) ; | |
2706 | } | |
4243c432 NC |
2707 | if (!accumulate) { |
2708 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2709 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2710 | PL_compiling.cop_warnings = pWARN_NONE; | |
2711 | } | |
72dc9ed5 NC |
2712 | /* Yuck. I can't see how to abstract this: */ |
2713 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2714 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2715 | if (!specialWARN(PL_compiling.cop_warnings)) |
2716 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2717 | PL_compiling.cop_warnings = pWARN_ALL; |
2718 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2719 | } |
d3a7d8c7 | 2720 | else { |
72dc9ed5 NC |
2721 | STRLEN len; |
2722 | const char *const p = SvPV_const(sv, len); | |
2723 | ||
2724 | PL_compiling.cop_warnings | |
8ee4cf24 | 2725 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2726 | p, len); |
2727 | ||
d3a7d8c7 GS |
2728 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2729 | PL_dowarn |= G_WARN_ONCE ; | |
2730 | } | |
f4fc7782 | 2731 | |
d3a7d8c7 | 2732 | } |
4438c4b7 | 2733 | } |
971a9dd3 | 2734 | } |
79072805 LW |
2735 | break; |
2736 | case '.': | |
3280af22 NIS |
2737 | if (PL_localizing) { |
2738 | if (PL_localizing == 1) | |
7766f137 | 2739 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2740 | } |
3280af22 | 2741 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2742 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2743 | break; |
2744 | case '^': | |
acbe1b9d FC |
2745 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2746 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2747 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2748 | break; |
2749 | case '~': | |
acbe1b9d FC |
2750 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2751 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2752 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2753 | break; |
2754 | case '=': | |
acbe1b9d | 2755 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2756 | break; |
2757 | case '-': | |
acbe1b9d FC |
2758 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
2759 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
099be4f1 | 2760 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 LW |
2761 | break; |
2762 | case '%': | |
acbe1b9d | 2763 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2764 | break; |
2765 | case '|': | |
4b65379b | 2766 | { |
099be4f1 | 2767 | IO * const io = GvIO(PL_defoutgv); |
720f287d AB |
2768 | if(!io) |
2769 | break; | |
38ab35f8 | 2770 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2771 | IoFLAGS(io) &= ~IOf_FLUSH; |
2772 | else { | |
2773 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2774 | PerlIO *ofp = IoOFP(io); | |
2775 | if (ofp) | |
2776 | (void)PerlIO_flush(ofp); | |
2777 | IoFLAGS(io) |= IOf_FLUSH; | |
2778 | } | |
2779 | } | |
79072805 LW |
2780 | } |
2781 | break; | |
79072805 | 2782 | case '/': |
3280af22 | 2783 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2784 | PL_rs = newSVsv(sv); |
79072805 LW |
2785 | break; |
2786 | case '\\': | |
ef8d46e8 | 2787 | SvREFCNT_dec(PL_ors_sv); |
6bc2995b | 2788 | if (SvOK(sv)) { |
7889fe52 | 2789 | PL_ors_sv = newSVsv(sv); |
009c130f | 2790 | } |
e3c19b7b | 2791 | else { |
a0714e2c | 2792 | PL_ors_sv = NULL; |
e3c19b7b | 2793 | } |
79072805 | 2794 | break; |
7d69d4a6 FC |
2795 | case '[': |
2796 | if (SvIV(sv) != 0) | |
2797 | Perl_croak(aTHX_ "Assigning non-zero to $[ is no longer possible"); | |
2798 | break; | |
79072805 | 2799 | case '?': |
ff0cee69 | 2800 | #ifdef COMPLEX_STATUS |
6b88bc9c | 2801 | if (PL_localizing == 2) { |
41cb7b2b | 2802 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
2803 | PL_statusvalue = LvTARGOFF(sv); |
2804 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2805 | } |
2806 | else | |
2807 | #endif | |
2808 | #ifdef VMSISH_STATUS | |
2809 | if (VMSISH_STATUS) | |
fb38d079 | 2810 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2811 | else |
2812 | #endif | |
38ab35f8 | 2813 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2814 | break; |
2815 | case '!': | |
93189314 JH |
2816 | { |
2817 | #ifdef VMS | |
2818 | # define PERL_VMS_BANG vaxc$errno | |
2819 | #else | |
2820 | # define PERL_VMS_BANG 0 | |
2821 | #endif | |
91487cfc | 2822 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2823 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2824 | } | |
79072805 LW |
2825 | break; |
2826 | case '<': | |
985213f2 AB |
2827 | { |
2828 | const IV new_uid = SvIV(sv); | |
2829 | PL_delaymagic_uid = new_uid; | |
3280af22 NIS |
2830 | if (PL_delaymagic) { |
2831 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2832 | break; /* don't do magic till later */ |
2833 | } | |
2834 | #ifdef HAS_SETRUID | |
985213f2 | 2835 | (void)setruid((Uid_t)new_uid); |
79072805 LW |
2836 | #else |
2837 | #ifdef HAS_SETREUID | |
985213f2 | 2838 | (void)setreuid((Uid_t)new_uid, (Uid_t)-1); |
748a9306 | 2839 | #else |
85e6fe83 | 2840 | #ifdef HAS_SETRESUID |
985213f2 | 2841 | (void)setresuid((Uid_t)new_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2842 | #else |
985213f2 | 2843 | if (new_uid == PerlProc_geteuid()) { /* special case $< = $> */ |
75870ed3 | 2844 | #ifdef PERL_DARWIN |
2845 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
985213f2 | 2846 | if (new_uid != 0 && PerlProc_getuid() == 0) |
75870ed3 | 2847 | (void)PerlProc_setuid(0); |
2848 | #endif | |
985213f2 | 2849 | (void)PerlProc_setuid(new_uid); |
75870ed3 | 2850 | } else { |
cea2e8a9 | 2851 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2852 | } |
79072805 LW |
2853 | #endif |
2854 | #endif | |
85e6fe83 | 2855 | #endif |
79072805 | 2856 | break; |
985213f2 | 2857 | } |
79072805 | 2858 | case '>': |
985213f2 AB |
2859 | { |
2860 | const UV new_euid = SvIV(sv); | |
2861 | PL_delaymagic_euid = new_euid; | |
3280af22 NIS |
2862 | if (PL_delaymagic) { |
2863 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2864 | break; /* don't do magic till later */ |
2865 | } | |
2866 | #ifdef HAS_SETEUID | |
985213f2 | 2867 | (void)seteuid((Uid_t)new_euid); |
79072805 LW |
2868 | #else |
2869 | #ifdef HAS_SETREUID | |
985213f2 | 2870 | (void)setreuid((Uid_t)-1, (Uid_t)new_euid); |
85e6fe83 LW |
2871 | #else |
2872 | #ifdef HAS_SETRESUID | |
985213f2 | 2873 | (void)setresuid((Uid_t)-1, (Uid_t)new_euid, (Uid_t)-1); |
79072805 | 2874 | #else |
985213f2 | 2875 | if (new_euid == PerlProc_getuid()) /* special case $> = $< */ |
382669a9 | 2876 | PerlProc_setuid(new_euid); |
a0d0e21e | 2877 | else { |
cea2e8a9 | 2878 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2879 | } |
79072805 LW |
2880 | #endif |
2881 | #endif | |
85e6fe83 | 2882 | #endif |
79072805 | 2883 | break; |
985213f2 | 2884 | } |
79072805 | 2885 | case '(': |
985213f2 AB |
2886 | { |
2887 | const UV new_gid = SvIV(sv); | |
2888 | PL_delaymagic_gid = new_gid; | |
3280af22 NIS |
2889 | if (PL_delaymagic) { |
2890 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2891 | break; /* don't do magic till later */ |
2892 | } | |
2893 | #ifdef HAS_SETRGID | |
985213f2 | 2894 | (void)setrgid((Gid_t)new_gid); |
79072805 LW |
2895 | #else |
2896 | #ifdef HAS_SETREGID | |
985213f2 | 2897 | (void)setregid((Gid_t)new_gid, (Gid_t)-1); |
85e6fe83 LW |
2898 | #else |
2899 | #ifdef HAS_SETRESGID | |
985213f2 | 2900 | (void)setresgid((Gid_t)new_gid, (Gid_t)-1, (Gid_t) -1); |
79072805 | 2901 | #else |
985213f2 AB |
2902 | if (new_gid == PerlProc_getegid()) /* special case $( = $) */ |
2903 | (void)PerlProc_setgid(new_gid); | |
748a9306 | 2904 | else { |
cea2e8a9 | 2905 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2906 | } |
79072805 LW |
2907 | #endif |
2908 | #endif | |
85e6fe83 | 2909 | #endif |
79072805 | 2910 | break; |
985213f2 | 2911 | } |
79072805 | 2912 | case ')': |
985213f2 AB |
2913 | { |
2914 | UV new_egid; | |
5cd24f17 | 2915 | #ifdef HAS_SETGROUPS |
2916 | { | |
b83604b4 | 2917 | const char *p = SvPV_const(sv, len); |
757f63d8 | 2918 | Groups_t *gary = NULL; |
fb4089e0 | 2919 | #ifdef _SC_NGROUPS_MAX |
2920 | int maxgrp = sysconf(_SC_NGROUPS_MAX); | |
2921 | ||
2922 | if (maxgrp < 0) | |
2923 | maxgrp = NGROUPS; | |
2924 | #else | |
2925 | int maxgrp = NGROUPS; | |
2926 | #endif | |
757f63d8 SP |
2927 | |
2928 | while (isSPACE(*p)) | |
2929 | ++p; | |
985213f2 | 2930 | new_egid = Atol(p); |
fb4089e0 | 2931 | for (i = 0; i < maxgrp; ++i) { |
757f63d8 SP |
2932 | while (*p && !isSPACE(*p)) |
2933 | ++p; | |
2934 | while (isSPACE(*p)) | |
2935 | ++p; | |
2936 | if (!*p) | |
2937 | break; | |
2938 | if(!gary) | |
2939 | Newx(gary, i + 1, Groups_t); | |
2940 | else | |
2941 | Renew(gary, i + 1, Groups_t); | |
2942 | gary[i] = Atol(p); | |
2943 | } | |
2944 | if (i) | |
2945 | (void)setgroups(i, gary); | |
f5a63d97 | 2946 | Safefree(gary); |
5cd24f17 | 2947 | } |
2948 | #else /* HAS_SETGROUPS */ | |
985213f2 | 2949 | new_egid = SvIV(sv); |
5cd24f17 | 2950 | #endif /* HAS_SETGROUPS */ |
985213f2 | 2951 | PL_delaymagic_egid = new_egid; |
3280af22 NIS |
2952 | if (PL_delaymagic) { |
2953 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2954 | break; /* don't do magic till later */ |
2955 | } | |
2956 | #ifdef HAS_SETEGID | |
985213f2 | 2957 | (void)setegid((Gid_t)new_egid); |
79072805 LW |
2958 | #else |
2959 | #ifdef HAS_SETREGID | |
985213f2 | 2960 | (void)setregid((Gid_t)-1, (Gid_t)new_egid); |
85e6fe83 LW |
2961 | #else |
2962 | #ifdef HAS_SETRESGID | |
985213f2 | 2963 | (void)setresgid((Gid_t)-1, (Gid_t)new_egid, (Gid_t)-1); |
79072805 | 2964 | #else |
985213f2 AB |
2965 | if (new_egid == PerlProc_getgid()) /* special case $) = $( */ |
2966 | (void)PerlProc_setgid(new_egid); | |
748a9306 | 2967 | else { |
cea2e8a9 | 2968 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2969 | } |
79072805 LW |
2970 | #endif |
2971 | #endif | |
85e6fe83 | 2972 | #endif |
79072805 | 2973 | break; |
985213f2 | 2974 | } |
79072805 | 2975 | case ':': |
2d8e6c8d | 2976 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2977 | break; |
9cdac2a2 FC |
2978 | case '$': /* $$ */ |
2979 | /* Store the pid in mg->mg_obj so we can tell when a fork has | |
2980 | occurred. mg->mg_obj points to *$ by default, so clear it. */ | |
2981 | if (isGV(mg->mg_obj)) { | |
2982 | if (mg->mg_flags & MGf_REFCOUNTED) /* probably never true */ | |
2983 | SvREFCNT_dec(mg->mg_obj); | |
2984 | mg->mg_flags |= MGf_REFCOUNTED; | |
2985 | mg->mg_obj = newSViv((IV)PerlProc_getpid()); | |
2986 | } | |
2987 | else sv_setiv(mg->mg_obj, (IV)PerlProc_getpid()); | |
2988 | break; | |
79072805 | 2989 | case '0': |
e2975953 | 2990 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2991 | #ifdef HAS_SETPROCTITLE |
2992 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2993 | * show a string from the process struct and provide | |
2994 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2995 | if (PL_origalen != 1) { |
b83604b4 | 2996 | s = SvPV_const(sv, len); |
98b76f99 | 2997 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2998 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2999 | * but not the "(perl) suffix from the ps(1) |
3000 | * output, because that's what ps(1) shows if the | |
3001 | * argv[] is modified. */ | |
6f2ad931 | 3002 | setproctitle("-%s", s); |
9aad2c0e | 3003 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
3004 | /* This doesn't really work if you assume that |
3005 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
3006 | * because in ps(1) output the result will be like | |
3007 | * sprintf("perl: %s (perl)", s) | |
3008 | * I guess this is a security feature: | |
3009 | * one (a user process) cannot get rid of the original name. | |
3010 | * --jhi */ | |
3011 | setproctitle("%s", s); | |
3012 | # endif | |
3013 | } | |
9d3968b2 | 3014 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 3015 | if (PL_origalen != 1) { |
17aa7f3d | 3016 | union pstun un; |
b83604b4 | 3017 | s = SvPV_const(sv, len); |
6867be6d | 3018 | un.pst_command = (char *)s; |
17aa7f3d JH |
3019 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
3020 | } | |
9d3968b2 | 3021 | #else |
2d2af554 GA |
3022 | if (PL_origalen > 1) { |
3023 | /* PL_origalen is set in perl_parse(). */ | |
3024 | s = SvPV_force(sv,len); | |
3025 | if (len >= (STRLEN)PL_origalen-1) { | |
3026 | /* Longer than original, will be truncated. We assume that | |
3027 | * PL_origalen bytes are available. */ | |
3028 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
3029 | } | |
3030 | else { | |
3031 | /* Shorter than original, will be padded. */ | |
235ac35d | 3032 | #ifdef PERL_DARWIN |
60777a0d JH |
3033 | /* Special case for Mac OS X: see [perl #38868] */ |
3034 | const int pad = 0; | |
235ac35d | 3035 | #else |
8a89a4f1 MB |
3036 | /* Is the space counterintuitive? Yes. |
3037 | * (You were expecting \0?) | |
3038 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
3039 | * --jhi */ | |
60777a0d | 3040 | const int pad = ' '; |
235ac35d | 3041 | #endif |
60777a0d JH |
3042 | Copy(s, PL_origargv[0], len, char); |
3043 | PL_origargv[0][len] = 0; | |
3044 | memset(PL_origargv[0] + len + 1, | |
3045 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
3046 | } |
3047 | PL_origargv[0][PL_origalen-1] = 0; | |
3048 | for (i = 1; i < PL_origargc; i++) | |
3049 | PL_origargv[i] = 0; | |
7636ea95 AB |
3050 | #ifdef HAS_PRCTL_SET_NAME |
3051 | /* Set the legacy process name in addition to the POSIX name on Linux */ | |
3052 | if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) { | |
3053 | /* diag_listed_as: SKIPME */ | |
3054 | Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno)); | |
3055 | } | |
3056 | #endif | |
79072805 | 3057 | } |
9d3968b2 | 3058 | #endif |
e2975953 | 3059 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 LW |
3060 | break; |
3061 | } | |
3062 | return 0; | |
3063 | } | |
3064 | ||
3065 | I32 | |
84c7b88c BF |
3066 | Perl_whichsig_sv(pTHX_ SV *sigsv) |
3067 | { | |
3068 | const char *sigpv; | |
3069 | STRLEN siglen; | |
3070 | PERL_ARGS_ASSERT_WHICHSIG_SV; | |
3071 | PERL_UNUSED_CONTEXT; | |
3072 | sigpv = SvPV_const(sigsv, siglen); | |
3073 | return whichsig_pvn(sigpv, siglen); | |
3074 | } | |
3075 | ||
3076 | I32 | |
3077 | Perl_whichsig_pv(pTHX_ const char *sig) | |
3078 | { | |
3079 | PERL_ARGS_ASSERT_WHICHSIG_PV; | |
3080 | PERL_UNUSED_CONTEXT; | |
3081 | return whichsig_pvn(sig, strlen(sig)); | |
3082 | } | |
3083 | ||
3084 | I32 | |
3085 | Perl_whichsig_pvn(pTHX_ const char *sig, STRLEN len) | |
79072805 | 3086 | { |
eb578fdb | 3087 | char* const* sigv; |
7918f24d | 3088 | |
84c7b88c | 3089 | PERL_ARGS_ASSERT_WHICHSIG_PVN; |
96a5add6 | 3090 | PERL_UNUSED_CONTEXT; |
79072805 | 3091 | |
aadb217d | 3092 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
84c7b88c | 3093 | if (strlen(*sigv) == len && memEQ(sig,*sigv, len)) |
aadb217d | 3094 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 | 3095 | #ifdef SIGCLD |
84c7b88c | 3096 | if (memEQs(sig, len, "CHLD")) |
79072805 LW |
3097 | return SIGCLD; |
3098 | #endif | |
3099 | #ifdef SIGCHLD | |
84c7b88c | 3100 | if (memEQs(sig, len, "CLD")) |
79072805 LW |
3101 | return SIGCHLD; |
3102 | #endif | |
7f1236c0 | 3103 | return -1; |
79072805 LW |
3104 | } |
3105 | ||
ecfc5424 | 3106 | Signal_t |
1e82f5a6 | 3107 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3108 | Perl_sighandler(int sig, siginfo_t *sip, void *uap) |
1e82f5a6 SH |
3109 | #else |
3110 | Perl_sighandler(int sig) | |
3111 | #endif | |
79072805 | 3112 | { |
1018e26f NIS |
3113 | #ifdef PERL_GET_SIG_CONTEXT |
3114 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 3115 | #else |
cea2e8a9 | 3116 | dTHX; |
71d280e3 | 3117 | #endif |
79072805 | 3118 | dSP; |
a0714e2c SS |
3119 | GV *gv = NULL; |
3120 | SV *sv = NULL; | |
8772537c | 3121 | SV * const tSv = PL_Sv; |
601f1833 | 3122 | CV *cv = NULL; |
533c011a | 3123 | OP *myop = PL_op; |
84902520 | 3124 | U32 flags = 0; |
8772537c | 3125 | XPV * const tXpv = PL_Xpv; |
0c4d3b5e | 3126 | I32 old_ss_ix = PL_savestack_ix; |
100c03aa | 3127 | SV *errsv_save = NULL; |
71d280e3 | 3128 | |
84902520 | 3129 | |
727405f8 | 3130 | if (!PL_psig_ptr[sig]) { |
99ef548b | 3131 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
3132 | PL_sig_name[sig]); |
3133 | exit(sig); | |
3134 | } | |
ff0cee69 | 3135 | |
a0d63a7b DM |
3136 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3137 | /* Max number of items pushed there is 3*n or 4. We cannot fix | |
3138 | infinity, so we fix 4 (in fact 5): */ | |
3139 | if (PL_savestack_ix + 15 <= PL_savestack_max) { | |
3140 | flags |= 1; | |
3141 | PL_savestack_ix += 5; /* Protect save in progress. */ | |
3142 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, NULL); | |
3143 | } | |
84902520 | 3144 | } |
84902520 | 3145 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ea726b52 | 3146 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig]))) |
8772537c AL |
3147 | || SvTYPE(cv) != SVt_PVCV) { |
3148 | HV *st; | |
f2c0649b | 3149 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 3150 | } |
84902520 | 3151 | |
a0d0e21e | 3152 | if (!cv || !CvROOT(cv)) { |
a2a5de95 NC |
3153 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
3154 | PL_sig_name[sig], (gv ? GvENAME(gv) | |
3155 | : ((cv && CvGV(cv)) | |
3156 | ? GvENAME(CvGV(cv)) | |
3157 | : "__ANON__"))); | |
00d579c5 | 3158 | goto cleanup; |
79072805 LW |
3159 | } |
3160 | ||
0c4d3b5e DM |
3161 | sv = PL_psig_name[sig] |
3162 | ? SvREFCNT_inc_NN(PL_psig_name[sig]) | |
3163 | : newSVpv(PL_sig_name[sig],0); | |
72048cfe | 3164 | flags |= 8; |
0c4d3b5e DM |
3165 | SAVEFREESV(sv); |
3166 | ||
a0d63a7b DM |
3167 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3168 | /* make sure our assumption about the size of the SAVEs are correct: | |
3169 | * 3 for SAVEDESTRUCTOR_X, 2 for SAVEFREESV */ | |
3170 | assert(old_ss_ix + 2 + ((flags & 1) ? 3+5 : 0) == PL_savestack_ix); | |
3171 | } | |
e336de0d | 3172 | |
e788e7d3 | 3173 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 3174 | PUSHMARK(SP); |
79072805 | 3175 | PUSHs(sv); |
8aad04aa JH |
3176 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
3177 | { | |
3178 | struct sigaction oact; | |
3179 | ||
3180 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
3181 | if (sip) { |
3182 | HV *sih = newHV(); | |
ad64d0ec | 3183 | SV *rv = newRV_noinc(MUTABLE_SV(sih)); |
8aad04aa JH |
3184 | /* The siginfo fields signo, code, errno, pid, uid, |
3185 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
3186 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
3187 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 3188 | #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 |
3189 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
3190 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
3191 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
3192 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
3193 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
3194 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 3195 | #endif |
8aad04aa | 3196 | EXTEND(SP, 2); |
ad64d0ec | 3197 | PUSHs(rv); |
22f1178f | 3198 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 3199 | } |
b4552a27 | 3200 | |
8aad04aa JH |
3201 | } |
3202 | } | |
3203 | #endif | |
79072805 | 3204 | PUTBACK; |
a0d0e21e | 3205 | |
100c03aa JL |
3206 | errsv_save = newSVsv(ERRSV); |
3207 | ||
ad64d0ec | 3208 | call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL); |
79072805 | 3209 | |
d3acc0f7 | 3210 | POPSTACK; |
1b266415 | 3211 | if (SvTRUE(ERRSV)) { |
100c03aa | 3212 | SvREFCNT_dec(errsv_save); |
c22d665b | 3213 | #ifndef PERL_MICRO |
1b266415 NIS |
3214 | /* Handler "died", for example to get out of a restart-able read(). |
3215 | * Before we re-do that on its behalf re-enable the signal which was | |
3216 | * blocked by the system when we entered. | |
3217 | */ | |
c22d665b | 3218 | #ifdef HAS_SIGPROCMASK |
d488af49 | 3219 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3220 | if (sip || uap) |
c22d665b LT |
3221 | #endif |
3222 | { | |
3223 | sigset_t set; | |
3224 | sigemptyset(&set); | |
3225 | sigaddset(&set,sig); | |
3226 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
3227 | } | |
3228 | #else | |
1b266415 NIS |
3229 | /* Not clear if this will work */ |
3230 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 3231 | (void)rsignal(sig, PL_csighandlerp); |
c22d665b LT |
3232 | #endif |
3233 | #endif /* !PERL_MICRO */ | |
c5df3096 | 3234 | die_sv(ERRSV); |
1b266415 | 3235 | } |
100c03aa JL |
3236 | else { |
3237 | sv_setsv(ERRSV, errsv_save); | |
3238 | SvREFCNT_dec(errsv_save); | |
3239 | } | |
3240 | ||
00d579c5 | 3241 | cleanup: |
0c4d3b5e DM |
3242 | /* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */ |
3243 | PL_savestack_ix = old_ss_ix; | |
72048cfe | 3244 | if (flags & 8) |
84902520 | 3245 | SvREFCNT_dec(sv); |
533c011a | 3246 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 3247 | |
3280af22 NIS |
3248 | PL_Sv = tSv; /* Restore global temporaries. */ |
3249 | PL_Xpv = tXpv; | |
53bb94e2 | 3250 | return; |
79072805 | 3251 | } |
4e35701f NIS |
3252 | |
3253 | ||
51371543 | 3254 | static void |
8772537c | 3255 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3256 | { |
97aff369 | 3257 | dVAR; |
8772537c AL |
3258 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3259 | SV* const sv = mgs->mgs_sv; | |
150b625d | 3260 | bool bumped; |
51371543 GS |
3261 | |
3262 | if (!sv) | |
3263 | return; | |
3264 | ||
4bac9ae4 CS |
3265 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
3266 | SvTEMP_off(sv); /* if it's still magical, this value isn't temporary */ | |
f8c7b90f | 3267 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3268 | /* While magic was saved (and off) sv_setsv may well have seen |
3269 | this SV as a prime candidate for COW. */ | |
3270 | if (SvIsCOW(sv)) | |
e424a81e | 3271 | sv_force_normal_flags(sv, 0); |
f9701176 | 3272 | #endif |
f9c6fee5 CS |
3273 | if (mgs->mgs_readonly) |
3274 | SvREADONLY_on(sv); | |
3275 | if (mgs->mgs_magical) | |
3276 | SvFLAGS(sv) |= mgs->mgs_magical; | |
51371543 GS |
3277 | else |
3278 | mg_magical(sv); | |
51371543 GS |
3279 | } |
3280 | ||
150b625d | 3281 | bumped = mgs->mgs_bumped; |
51371543 GS |
3282 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
3283 | ||
3284 | /* If we're still on top of the stack, pop us off. (That condition | |
3285 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3286 | * if it's being called via leave_scope.) | |
3287 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3288 | * may leave alloc gunk on the savestack, and some code | |
3289 | * (e.g. sighandler) doesn't expect that... | |
3290 | */ | |
3291 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3292 | { | |
1be36ce0 NC |
3293 | UV popval = SSPOPUV; |
3294 | assert(popval == SAVEt_DESTRUCTOR_X); | |
51371543 | 3295 | PL_savestack_ix -= 2; |
1be36ce0 NC |
3296 | popval = SSPOPUV; |
3297 | assert((popval & SAVE_MASK) == SAVEt_ALLOC); | |
3298 | PL_savestack_ix -= popval >> SAVE_TIGHT_SHIFT; | |
51371543 | 3299 | } |
150b625d DM |
3300 | if (bumped) { |
3301 | if (SvREFCNT(sv) == 1) { | |
3302 | /* We hold the last reference to this SV, which implies that the | |
3303 | SV was deleted as a side effect of the routines we called. | |
3304 | So artificially keep it alive a bit longer. | |
3305 | We avoid turning on the TEMP flag, which can cause the SV's | |
3306 | buffer to get stolen (and maybe other stuff). */ | |
150b625d | 3307 | sv_2mortal(sv); |
4bac9ae4 | 3308 | SvTEMP_off(sv); |
8985fe98 | 3309 | } |
150b625d DM |
3310 | else |
3311 | SvREFCNT_dec(sv); /* undo the inc in S_save_magic() */ | |
8985fe98 | 3312 | } |
51371543 GS |
3313 | } |
3314 | ||
0c4d3b5e DM |
3315 | /* clean up the mess created by Perl_sighandler(). |
3316 | * Note that this is only called during an exit in a signal handler; | |
3317 | * a die is trapped by the call_sv() and the SAVEDESTRUCTOR_X manually | |
9a7f166c | 3318 | * skipped over. */ |
0c4d3b5e | 3319 | |
51371543 | 3320 | static void |
8772537c | 3321 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3322 | { |
27da23d5 | 3323 | dVAR; |
0c4d3b5e | 3324 | PERL_UNUSED_ARG(p); |
7918f24d | 3325 | |
0c4d3b5e | 3326 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
51371543 | 3327 | } |
1018e26f | 3328 | |
66610fdd | 3329 | /* |
b3ca2e83 NC |
3330 | =for apidoc magic_sethint |
3331 | ||
3332 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3333 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3334 | anything that would need a deep copy. Maybe we should warn if we find a | |
3335 | reference. | |
b3ca2e83 NC |
3336 | |
3337 | =cut | |
3338 | */ | |
3339 | int | |
3340 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3341 | { | |
3342 | dVAR; | |
ad64d0ec | 3343 | SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr) |
59cd0e26 | 3344 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3345 | |
7918f24d NC |
3346 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3347 | ||
e6e3e454 NC |
3348 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3349 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3350 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3351 | or take other more complex action. */ | |
3352 | ||
5b9c0671 NC |
3353 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3354 | Doing this here saves a lot of doing it manually in perl code (and | |
3355 | forgetting to do it, and consequent subtle errors. */ | |
3356 | PL_hints |= HINT_LOCALIZE_HH; | |
20439bc7 Z |
3357 | CopHINTHASH_set(&PL_compiling, |
3358 | cophh_store_sv(CopHINTHASH_get(&PL_compiling), key, 0, sv, 0)); | |
b3ca2e83 NC |
3359 | return 0; |
3360 | } | |
3361 | ||
3362 | /* | |
f175cff5 | 3363 | =for apidoc magic_clearhint |
b3ca2e83 | 3364 | |
c28fe1ec NC |
3365 | Triggered by a delete from %^H, records the key to |
3366 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3367 | |
3368 | =cut | |
3369 | */ | |
3370 | int | |
3371 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3372 | { | |
3373 | dVAR; | |
7918f24d NC |
3374 | |
3375 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; | |
f5a63d97 AL |
3376 | PERL_UNUSED_ARG(sv); |
3377 | ||
5b9c0671 | 3378 | PL_hints |= HINT_LOCALIZE_HH; |
20439bc7 | 3379 | CopHINTHASH_set(&PL_compiling, |
e3352591 FC |
3380 | mg->mg_len == HEf_SVKEY |
3381 | ? cophh_delete_sv(CopHINTHASH_get(&PL_compiling), | |
3382 | MUTABLE_SV(mg->mg_ptr), 0, 0) | |
3383 | : cophh_delete_pvn(CopHINTHASH_get(&PL_compiling), | |
3384 | mg->mg_ptr, mg->mg_len, 0, 0)); | |
b3ca2e83 NC |
3385 | return 0; |
3386 | } | |
3387 | ||
3388 | /* | |
f747ebd6 Z |
3389 | =for apidoc magic_clearhints |
3390 | ||
3391 | Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>. | |
3392 | ||
3393 | =cut | |
3394 | */ | |
3395 | int | |
3396 | Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg) | |
3397 | { | |
3398 | PERL_ARGS_ASSERT_MAGIC_CLEARHINTS; | |
3399 | PERL_UNUSED_ARG(sv); | |
3400 | PERL_UNUSED_ARG(mg); | |
20439bc7 Z |
3401 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
3402 | CopHINTHASH_set(&PL_compiling, cophh_new_empty()); | |
f747ebd6 Z |
3403 | return 0; |
3404 | } | |
3405 | ||
09fb282d FC |
3406 | int |
3407 | Perl_magic_copycallchecker(pTHX_ SV *sv, MAGIC *mg, SV *nsv, | |
3408 | const char *name, I32 namlen) | |
3409 | { | |
3410 | MAGIC *nmg; | |
3411 | ||
3412 | PERL_ARGS_ASSERT_MAGIC_COPYCALLCHECKER; | |
4f8dbb2d | 3413 | PERL_UNUSED_ARG(sv); |
09fb282d FC |
3414 | PERL_UNUSED_ARG(name); |
3415 | PERL_UNUSED_ARG(namlen); | |
3416 | ||
3417 | sv_magic(nsv, &PL_sv_undef, mg->mg_type, NULL, 0); | |
3418 | nmg = mg_find(nsv, mg->mg_type); | |
3419 | if (nmg->mg_flags & MGf_REFCOUNTED) SvREFCNT_dec(nmg->mg_obj); | |
3420 | nmg->mg_ptr = mg->mg_ptr; | |
3421 | nmg->mg_obj = SvREFCNT_inc_simple(mg->mg_obj); | |
3422 | nmg->mg_flags |= MGf_REFCOUNTED; | |
3423 | return 1; | |
3424 | } | |
3425 | ||
f747ebd6 | 3426 | /* |
66610fdd RGS |
3427 | * Local variables: |
3428 | * c-indentation-style: bsd | |
3429 | * c-basic-offset: 4 | |
14d04a33 | 3430 | * indent-tabs-mode: nil |
66610fdd RGS |
3431 | * End: |
3432 | * | |
14d04a33 | 3433 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3434 | */ |