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; |
8561ea1d FC |
909 | case '\014': /* ^LAST_FH */ |
910 | if (strEQ(remaining, "AST_FH")) { | |
911 | if (PL_last_in_gv) { | |
912 | assert(isGV_with_GP(PL_last_in_gv)); | |
913 | SV_CHECK_THINKFIRST_COW_DROP(sv); | |
914 | prepare_SV_for_RV(sv); | |
915 | SvOK_off(sv); | |
916 | SvRV_set(sv, SvREFCNT_inc_simple_NN(PL_last_in_gv)); | |
917 | SvROK_on(sv); | |
918 | sv_rvweaken(sv); | |
919 | } | |
920 | else sv_setsv_nomg(sv, NULL); | |
921 | } | |
922 | break; | |
ac27b0f5 | 923 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 924 | if (nextchar == '\0') { |
ac27b0f5 | 925 | sv_setpv(sv, PL_osname); |
3511154c DM |
926 | SvTAINTED_off(sv); |
927 | } | |
823a54a3 | 928 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 929 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 930 | } |
28f23441 | 931 | break; |
9ebf26ad | 932 | case '\020': |
cde0cee5 YO |
933 | if (nextchar == '\0') { /* ^P */ |
934 | sv_setiv(sv, (IV)PL_perldb); | |
935 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2c7b5d76 DM |
936 | |
937 | paren = RX_BUFF_IDX_CARET_PREMATCH; | |
938 | goto do_numbuf_fetch; | |
cde0cee5 | 939 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ |
2c7b5d76 DM |
940 | paren = RX_BUFF_IDX_CARET_POSTMATCH; |
941 | goto do_numbuf_fetch; | |
cde0cee5 | 942 | } |
79072805 | 943 | break; |
fb73857a | 944 | case '\023': /* ^S */ |
823a54a3 | 945 | if (nextchar == '\0') { |
bc177e6b | 946 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 947 | SvOK_off(sv); |
3280af22 | 948 | else if (PL_in_eval) |
6dc8a9e4 | 949 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
950 | else |
951 | sv_setiv(sv, 0); | |
d58bf5aa | 952 | } |
fb73857a | 953 | break; |
79072805 | 954 | case '\024': /* ^T */ |
823a54a3 | 955 | if (nextchar == '\0') { |
88e89b8a | 956 | #ifdef BIG_TIME |
7c36658b | 957 | sv_setnv(sv, PL_basetime); |
88e89b8a | 958 | #else |
7c36658b | 959 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 960 | #endif |
7c36658b | 961 | } |
823a54a3 | 962 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
963 | sv_setiv(sv, PL_tainting |
964 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
965 | : 0); | |
7c36658b | 966 | break; |
e07ea26a | 967 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 968 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 969 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 970 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 971 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
972 | else if (strEQ(remaining, "TF8CACHE")) |
973 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
974 | break; |
975 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 976 | if (nextchar == '\0') |
4438c4b7 | 977 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 978 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 979 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 980 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
981 | } |
982 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
7e4f0450 FC |
983 | sv_setsv(sv, &PL_sv_undef); |
984 | break; | |
013b78e8 | 985 | } |
d3a7d8c7 | 986 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
987 | /* Get the bit mask for $warnings::Bits{all}, because |
988 | * it could have been extended by warnings::register */ | |
4bac9ae4 CS |
989 | HV * const bits = get_hv("warnings::Bits", 0); |
990 | SV ** const bits_all = bits ? hv_fetchs(bits, "all", FALSE) : NULL; | |
991 | if (bits_all) | |
992 | sv_copypv(sv, *bits_all); | |
993 | else | |
994 | sv_setpvn(sv, WARN_ALLstring, WARNsize); | |
ac27b0f5 | 995 | } |
4438c4b7 | 996 | else { |
72dc9ed5 NC |
997 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
998 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 999 | } |
4438c4b7 | 1000 | } |
79072805 | 1001 | break; |
cde0cee5 YO |
1002 | case '\015': /* $^MATCH */ |
1003 | if (strEQ(remaining, "ATCH")) { | |
2c7b5d76 DM |
1004 | paren = RX_BUFF_IDX_CARET_FULLMATCH; |
1005 | goto do_numbuf_fetch; | |
1006 | } | |
1007 | ||
79072805 LW |
1008 | case '1': case '2': case '3': case '4': |
1009 | case '5': case '6': case '7': case '8': case '9': case '&': | |
2c7b5d76 DM |
1010 | /* |
1011 | * Pre-threads, this was paren = atoi(GvENAME((const GV *)mg->mg_obj)); | |
1012 | * XXX Does the new way break anything? | |
1013 | */ | |
1014 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
1015 | do_numbuf_fetch: | |
1016 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
1017 | CALLREG_NUMBUF_FETCH(rx,paren,sv); | |
1018 | break; | |
1019 | } | |
1020 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
1021 | break; |
1022 | case '+': | |
aaa362c4 | 1023 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2c7b5d76 DM |
1024 | paren = RX_LASTPAREN(rx); |
1025 | if (paren) | |
1026 | goto do_numbuf_fetch; | |
79072805 | 1027 | } |
3280af22 | 1028 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 1029 | break; |
a01268b5 JH |
1030 | case '\016': /* ^N */ |
1031 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
2c7b5d76 DM |
1032 | paren = RX_LASTCLOSEPAREN(rx); |
1033 | if (paren) | |
1034 | goto do_numbuf_fetch; | |
a01268b5 JH |
1035 | } |
1036 | sv_setsv(sv,&PL_sv_undef); | |
1037 | break; | |
79072805 | 1038 | case '`': |
2c7b5d76 DM |
1039 | paren = RX_BUFF_IDX_PREMATCH; |
1040 | goto do_numbuf_fetch; | |
79072805 | 1041 | case '\'': |
2c7b5d76 DM |
1042 | paren = RX_BUFF_IDX_POSTMATCH; |
1043 | goto do_numbuf_fetch; | |
79072805 | 1044 | case '.': |
3280af22 | 1045 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 1046 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 1047 | } |
79072805 LW |
1048 | break; |
1049 | case '?': | |
809a5acc | 1050 | { |
809a5acc | 1051 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 1052 | #ifdef COMPLEX_STATUS |
41cb7b2b | 1053 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
1054 | LvTARGOFF(sv) = PL_statusvalue; |
1055 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 1056 | #endif |
809a5acc | 1057 | } |
79072805 LW |
1058 | break; |
1059 | case '^': | |
acbe1b9d | 1060 | if (GvIOp(PL_defoutgv)) |
099be4f1 | 1061 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
1062 | if (s) |
1063 | sv_setpv(sv,s); | |
1064 | else { | |
3280af22 | 1065 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 1066 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
1067 | } |
1068 | break; | |
1069 | case '~': | |
acbe1b9d | 1070 | if (GvIOp(PL_defoutgv)) |
0daa599b | 1071 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 1072 | if (!s) |
3280af22 | 1073 | s = GvENAME(PL_defoutgv); |
79072805 LW |
1074 | sv_setpv(sv,s); |
1075 | break; | |
79072805 | 1076 | case '=': |
099be4f1 | 1077 | if (GvIO(PL_defoutgv)) |
0daa599b | 1078 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
1079 | break; |
1080 | case '-': | |
099be4f1 | 1081 | if (GvIO(PL_defoutgv)) |
0daa599b | 1082 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
1083 | break; |
1084 | case '%': | |
099be4f1 | 1085 | if (GvIO(PL_defoutgv)) |
0daa599b | 1086 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 | 1087 | break; |
79072805 LW |
1088 | case ':': |
1089 | break; | |
1090 | case '/': | |
1091 | break; | |
1092 | case '[': | |
e1dccc0d | 1093 | sv_setiv(sv, 0); |
79072805 LW |
1094 | break; |
1095 | case '|': | |
099be4f1 | 1096 | if (GvIO(PL_defoutgv)) |
0daa599b | 1097 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 | 1098 | break; |
79072805 | 1099 | case '\\': |
b2ce0fda | 1100 | if (PL_ors_sv) |
f28098ff | 1101 | sv_copypv(sv, PL_ors_sv); |
4bac9ae4 CS |
1102 | else |
1103 | sv_setsv(sv, &PL_sv_undef); | |
79072805 | 1104 | break; |
0e219455 | 1105 | case '$': /* $$ */ |
9cdac2a2 FC |
1106 | { |
1107 | IV const pid = (IV)PerlProc_getpid(); | |
19db9fb7 | 1108 | if (isGV(mg->mg_obj) || SvIV(mg->mg_obj) != pid) { |
9cdac2a2 FC |
1109 | /* never set manually, or at least not since last fork */ |
1110 | sv_setiv(sv, pid); | |
19db9fb7 Z |
1111 | /* never unsafe, even if reading in a tainted expression */ |
1112 | SvTAINTED_off(sv); | |
1113 | } | |
9cdac2a2 FC |
1114 | /* else a value has been assigned manually, so do nothing */ |
1115 | } | |
0e219455 MM |
1116 | break; |
1117 | ||
79072805 | 1118 | case '!': |
666d8aa2 CB |
1119 | { |
1120 | dSAVE_ERRNO; | |
a5f75d66 | 1121 | #ifdef VMS |
65202027 | 1122 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
a5f75d66 | 1123 | #else |
65202027 | 1124 | sv_setnv(sv, (NV)errno); |
666d8aa2 | 1125 | #endif |
88e89b8a | 1126 | #ifdef OS2 |
ed344e4f IZ |
1127 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
1128 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 1129 | else |
a5f75d66 | 1130 | #endif |
666ea192 | 1131 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 1132 | RESTORE_ERRNO; |
88e89b8a | 1133 | } |
666d8aa2 | 1134 | |
ad3296c6 | 1135 | SvRTRIM(sv); |
946ec16e | 1136 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1137 | break; |
1138 | case '<': | |
985213f2 | 1139 | sv_setiv(sv, (IV)PerlProc_getuid()); |
79072805 LW |
1140 | break; |
1141 | case '>': | |
985213f2 | 1142 | sv_setiv(sv, (IV)PerlProc_geteuid()); |
79072805 LW |
1143 | break; |
1144 | case '(': | |
985213f2 | 1145 | sv_setiv(sv, (IV)PerlProc_getgid()); |
79072805 LW |
1146 | goto add_groups; |
1147 | case ')': | |
985213f2 | 1148 | sv_setiv(sv, (IV)PerlProc_getegid()); |
79072805 | 1149 | add_groups: |
79072805 | 1150 | #ifdef HAS_GETGROUPS |
79072805 | 1151 | { |
57d7c65e | 1152 | Groups_t *gary = NULL; |
fb45abb2 | 1153 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1154 | Newx(gary, num_groups, Groups_t); |
1155 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1156 | for (i = 0; i < num_groups; i++) |
1157 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1158 | Safefree(gary); |
79072805 | 1159 | } |
155aba94 | 1160 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1161 | #endif |
79072805 | 1162 | break; |
79072805 LW |
1163 | case '0': |
1164 | break; | |
1165 | } | |
a0d0e21e | 1166 | return 0; |
79072805 LW |
1167 | } |
1168 | ||
1169 | int | |
864dbfa3 | 1170 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1171 | { |
8772537c | 1172 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1173 | |
7918f24d NC |
1174 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1175 | ||
79072805 | 1176 | if (uf && uf->uf_val) |
24f81a43 | 1177 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1178 | return 0; |
1179 | } | |
1180 | ||
1181 | int | |
864dbfa3 | 1182 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1183 | { |
27da23d5 | 1184 | dVAR; |
9ae3433d | 1185 | STRLEN len = 0, klen; |
12033064 | 1186 | const char * const key = MgPV_const(mg,klen); |
613c63b4 | 1187 | const char *s = NULL; |
1e422769 | 1188 | |
7918f24d NC |
1189 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1190 | ||
613c63b4 | 1191 | SvGETMAGIC(sv); |
12033064 | 1192 | if (SvOK(sv)) { |
613c63b4 CS |
1193 | /* defined environment variables are byte strings; unfortunately |
1194 | there is no SvPVbyte_force_nomg(), so we must do this piecewise */ | |
1195 | (void)SvPV_force_nomg_nolen(sv); | |
1196 | sv_utf8_downgrade(sv, /* fail_ok */ TRUE); | |
1197 | if (SvUTF8(sv)) { | |
1198 | Perl_ck_warner_d(aTHX_ packWARN(WARN_UTF8), "Wide character in %s", "setenv"); | |
1199 | SvUTF8_off(sv); | |
1200 | } | |
1201 | s = SvPVX(sv); | |
1202 | len = SvCUR(sv); | |
12033064 CS |
1203 | } |
1204 | my_setenv(key, s); /* does the deed */ | |
1205 | ||
a0d0e21e LW |
1206 | #ifdef DYNAMIC_ENV_FETCH |
1207 | /* We just undefd an environment var. Is a replacement */ | |
1208 | /* waiting in the wings? */ | |
1209 | if (!len) { | |
6bd66ee9 | 1210 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), key, klen, FALSE); |
fabdb6c0 | 1211 | if (valp) |
4ab59fcc | 1212 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1213 | } |
1214 | #endif | |
1e422769 | 1215 | |
39e571d4 | 1216 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1217 | /* And you'll never guess what the dog had */ |
1218 | /* in its mouth... */ | |
3280af22 | 1219 | if (PL_tainting) { |
1e422769 | 1220 | MgTAINTEDDIR_off(mg); |
1221 | #ifdef VMS | |
6bd66ee9 | 1222 | if (s && klen == 8 && strEQ(key, "DCL$PATH")) { |
b8ffc8df | 1223 | char pathbuf[256], eltbuf[256], *cp, *elt; |
1e422769 | 1224 | int i = 0, j = 0; |
1225 | ||
6fca0082 | 1226 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1227 | elt = eltbuf; |
1e422769 | 1228 | do { /* DCL$PATH may be a search list */ |
1229 | while (1) { /* as may dev portion of any element */ | |
1230 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1231 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1232 | cando_by_name(S_IWUSR,0,elt) ) { | |
1233 | MgTAINTEDDIR_on(mg); | |
1234 | return 0; | |
1235 | } | |
1236 | } | |
bd61b366 | 1237 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1238 | *cp = '\0'; |
1239 | if (my_trnlnm(elt, eltbuf, j++)) | |
1240 | elt = eltbuf; | |
1241 | else | |
1242 | break; | |
1243 | } | |
1244 | j = 0; | |
1245 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1246 | } | |
1247 | #endif /* VMS */ | |
12033064 | 1248 | if (s && klen == 4 && strEQ(key,"PATH")) { |
8772537c | 1249 | const char * const strend = s + len; |
463ee0b2 LW |
1250 | |
1251 | while (s < strend) { | |
96827780 | 1252 | char tmpbuf[256]; |
c623ac67 | 1253 | Stat_t st; |
5f74f29c | 1254 | I32 i; |
f5a63d97 AL |
1255 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1256 | const char path_sep = '|'; | |
1257 | #else | |
1258 | const char path_sep = ':'; | |
1259 | #endif | |
96827780 | 1260 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1261 | s, strend, path_sep, &i); |
463ee0b2 | 1262 | s++; |
bb7a0f54 | 1263 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1264 | #ifdef VMS |
1265 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1266 | #else | |
1267 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1268 | #endif | |
c6ed36e1 | 1269 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1270 | MgTAINTEDDIR_on(mg); |
1e422769 | 1271 | return 0; |
1272 | } | |
463ee0b2 | 1273 | } |
79072805 LW |
1274 | } |
1275 | } | |
39e571d4 | 1276 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1277 | |
79072805 LW |
1278 | return 0; |
1279 | } | |
1280 | ||
1281 | int | |
864dbfa3 | 1282 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1283 | { |
7918f24d | 1284 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1285 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1286 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1287 | return 0; |
1288 | } | |
1289 | ||
88e89b8a | 1290 | int |
864dbfa3 | 1291 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1292 | { |
97aff369 | 1293 | dVAR; |
7918f24d | 1294 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1295 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1296 | #if defined(VMS) |
cea2e8a9 | 1297 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1298 | #else |
3280af22 | 1299 | if (PL_localizing) { |
fb73857a | 1300 | HE* entry; |
b0269e46 | 1301 | my_clearenv(); |
85fbaab2 NC |
1302 | hv_iterinit(MUTABLE_HV(sv)); |
1303 | while ((entry = hv_iternext(MUTABLE_HV(sv)))) { | |
fb73857a | 1304 | I32 keylen; |
1305 | my_setenv(hv_iterkey(entry, &keylen), | |
85fbaab2 | 1306 | SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry))); |
fb73857a | 1307 | } |
1308 | } | |
1309 | #endif | |
1310 | return 0; | |
1311 | } | |
1312 | ||
1313 | int | |
864dbfa3 | 1314 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1315 | { |
27da23d5 | 1316 | dVAR; |
7918f24d | 1317 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1318 | PERL_UNUSED_ARG(sv); |
1319 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1320 | #if defined(VMS) |
1321 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1322 | #else | |
1323 | my_clearenv(); | |
1324 | #endif | |
3e3baf6d | 1325 | return 0; |
66b1d557 HM |
1326 | } |
1327 | ||
64ca3a65 | 1328 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1329 | #ifdef HAS_SIGPROCMASK |
1330 | static void | |
1331 | restore_sigmask(pTHX_ SV *save_sv) | |
1332 | { | |
0bd48802 | 1333 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1334 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1335 | } |
1336 | #endif | |
66b1d557 | 1337 | int |
864dbfa3 | 1338 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1339 | { |
97aff369 | 1340 | dVAR; |
88e89b8a | 1341 | /* Are we fetching a signal entry? */ |
708854f2 | 1342 | int i = (I16)mg->mg_private; |
7918f24d NC |
1343 | |
1344 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1345 | ||
708854f2 | 1346 | if (!i) { |
84c7b88c BF |
1347 | STRLEN siglen; |
1348 | const char * sig = MgPV_const(mg, siglen); | |
1349 | mg->mg_private = i = whichsig_pvn(sig, siglen); | |
708854f2 NC |
1350 | } |
1351 | ||
e02bfb16 | 1352 | if (i > 0) { |
22c35a8c GS |
1353 | if(PL_psig_ptr[i]) |
1354 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1355 | else { |
46da273f | 1356 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1357 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1358 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1359 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1360 | #endif |
1361 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1362 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1363 | sigstate = SIG_DFL; | |
85b332e2 | 1364 | #endif |
88e89b8a | 1365 | /* cache state so we don't fetch it again */ |
8aad04aa | 1366 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1367 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1368 | else |
3280af22 | 1369 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1370 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1371 | SvTEMP_off(sv); |
1372 | } | |
1373 | } | |
1374 | return 0; | |
1375 | } | |
1376 | int | |
864dbfa3 | 1377 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1378 | { |
7918f24d | 1379 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
179c85a2 | 1380 | |
38a124f0 | 1381 | magic_setsig(NULL, mg); |
179c85a2 | 1382 | return sv_unmagic(sv, mg->mg_type); |
88e89b8a | 1383 | } |
3d37d572 | 1384 | |
0a8e0eff | 1385 | Signal_t |
8aad04aa | 1386 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1387 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1388 | #else |
0a8e0eff | 1389 | Perl_csighandler(int sig) |
8aad04aa | 1390 | #endif |
0a8e0eff | 1391 | { |
1018e26f NIS |
1392 | #ifdef PERL_GET_SIG_CONTEXT |
1393 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1394 | #else | |
85b332e2 CL |
1395 | dTHX; |
1396 | #endif | |
23ada85b | 1397 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1398 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1399 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1400 | #endif |
2e34cc90 | 1401 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1402 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1403 | #ifdef KILL_BY_SIGPRC |
1404 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1405 | #else | |
1406 | exit(1); | |
1407 | #endif | |
1408 | #endif | |
406878dd | 1409 | if ( |
853d2c32 RGS |
1410 | #ifdef SIGILL |
1411 | sig == SIGILL || | |
1412 | #endif | |
1413 | #ifdef SIGBUS | |
1414 | sig == SIGBUS || | |
1415 | #endif | |
1416 | #ifdef SIGSEGV | |
1417 | sig == SIGSEGV || | |
1418 | #endif | |
1419 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 | 1420 | /* Call the perl level handler now-- |
31c91b43 | 1421 | * with risk we may be in malloc() or being destructed etc. */ |
6e324d09 | 1422 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1423 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1424 | #else |
1425 | (*PL_sighandlerp)(sig); | |
92807b6d | 1426 | #endif |
406878dd | 1427 | else { |
31c91b43 | 1428 | if (!PL_psig_pend) return; |
406878dd GA |
1429 | /* Set a flag to say this signal is pending, that is awaiting delivery after |
1430 | * the current Perl opcode completes */ | |
1431 | PL_psig_pend[sig]++; | |
1432 | ||
1433 | #ifndef SIG_PENDING_DIE_COUNT | |
1434 | # define SIG_PENDING_DIE_COUNT 120 | |
1435 | #endif | |
fe13d51d | 1436 | /* Add one to say _a_ signal is pending */ |
406878dd GA |
1437 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1438 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1439 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
1440 | } | |
0a8e0eff NIS |
1441 | } |
1442 | ||
2e34cc90 CL |
1443 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1444 | void | |
1445 | Perl_csighandler_init(void) | |
1446 | { | |
1447 | int sig; | |
27da23d5 | 1448 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1449 | |
1450 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1451 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1452 | dTHX; |
27da23d5 | 1453 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1454 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1455 | #endif |
1456 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1457 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1458 | #endif |
1459 | } | |
27da23d5 | 1460 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1461 | } |
1462 | #endif | |
1463 | ||
7fe50b8b LT |
1464 | #if defined HAS_SIGPROCMASK |
1465 | static void | |
1466 | unblock_sigmask(pTHX_ void* newset) | |
1467 | { | |
1468 | sigprocmask(SIG_UNBLOCK, (sigset_t*)newset, NULL); | |
1469 | } | |
1470 | #endif | |
1471 | ||
0a8e0eff NIS |
1472 | void |
1473 | Perl_despatch_signals(pTHX) | |
1474 | { | |
97aff369 | 1475 | dVAR; |
0a8e0eff NIS |
1476 | int sig; |
1477 | PL_sig_pending = 0; | |
1478 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1479 | if (PL_psig_pend[sig]) { | |
d0166017 | 1480 | dSAVE_ERRNO; |
7fe50b8b | 1481 | #ifdef HAS_SIGPROCMASK |
55534442 LT |
1482 | /* From sigaction(2) (FreeBSD man page): |
1483 | * | Signal routines normally execute with the signal that | |
1484 | * | caused their invocation blocked, but other signals may | |
1485 | * | yet occur. | |
1486 | * Emulation of this behavior (from within Perl) is enabled | |
1487 | * using sigprocmask | |
1488 | */ | |
1489 | int was_blocked; | |
1490 | sigset_t newset, oldset; | |
1491 | ||
1492 | sigemptyset(&newset); | |
1493 | sigaddset(&newset, sig); | |
1494 | sigprocmask(SIG_BLOCK, &newset, &oldset); | |
1495 | was_blocked = sigismember(&oldset, sig); | |
7fe50b8b LT |
1496 | if (!was_blocked) { |
1497 | SV* save_sv = newSVpvn((char *)(&newset), sizeof(sigset_t)); | |
1498 | ENTER; | |
1499 | SAVEFREESV(save_sv); | |
1500 | SAVEDESTRUCTOR_X(unblock_sigmask, SvPV_nolen(save_sv)); | |
1501 | } | |
55534442 | 1502 | #endif |
25da4428 | 1503 | PL_psig_pend[sig] = 0; |
6e324d09 | 1504 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1505 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1506 | #else |
1507 | (*PL_sighandlerp)(sig); | |
92807b6d | 1508 | #endif |
7fe50b8b | 1509 | #ifdef HAS_SIGPROCMASK |
55534442 | 1510 | if (!was_blocked) |
7fe50b8b | 1511 | LEAVE; |
55534442 | 1512 | #endif |
d0166017 | 1513 | RESTORE_ERRNO; |
0a8e0eff NIS |
1514 | } |
1515 | } | |
1516 | } | |
1517 | ||
38a124f0 | 1518 | /* sv of NULL signifies that we're acting as magic_clearsig. */ |
85e6fe83 | 1519 | int |
864dbfa3 | 1520 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1521 | { |
27da23d5 | 1522 | dVAR; |
79072805 | 1523 | I32 i; |
cbbf8932 | 1524 | SV** svp = NULL; |
2d4fcd5e AJ |
1525 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1526 | * effects (due to closures). We must make sure that the new disposition | |
1527 | * is in place before it is called. | |
1528 | */ | |
cbbf8932 | 1529 | SV* to_dec = NULL; |
e72dc28c | 1530 | STRLEN len; |
2d4fcd5e AJ |
1531 | #ifdef HAS_SIGPROCMASK |
1532 | sigset_t set, save; | |
1533 | SV* save_sv; | |
1534 | #endif | |
eb578fdb | 1535 | const char *s = MgPV_const(mg,len); |
7918f24d NC |
1536 | |
1537 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1538 | ||
748a9306 | 1539 | if (*s == '_') { |
84c7b88c | 1540 | if (memEQs(s, len, "__DIE__")) |
3280af22 | 1541 | svp = &PL_diehook; |
84c7b88c | 1542 | else if (memEQs(s, len, "__WARN__") |
38a124f0 NC |
1543 | && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) { |
1544 | /* Merge the existing behaviours, which are as follows: | |
1545 | magic_setsig, we always set svp to &PL_warnhook | |
1546 | (hence we always change the warnings handler) | |
1547 | For magic_clearsig, we don't change the warnings handler if it's | |
1548 | set to the &PL_warnhook. */ | |
3280af22 | 1549 | svp = &PL_warnhook; |
84c7b88c BF |
1550 | } else if (sv) { |
1551 | SV *tmp = sv_newmortal(); | |
1552 | Perl_croak(aTHX_ "No such hook: %s", | |
1553 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1554 | } | |
748a9306 | 1555 | i = 0; |
38a124f0 | 1556 | if (svp && *svp) { |
9289f461 RGS |
1557 | if (*svp != PERL_WARNHOOK_FATAL) |
1558 | to_dec = *svp; | |
cbbf8932 | 1559 | *svp = NULL; |
4633a7c4 | 1560 | } |
748a9306 LW |
1561 | } |
1562 | else { | |
708854f2 NC |
1563 | i = (I16)mg->mg_private; |
1564 | if (!i) { | |
84c7b88c | 1565 | i = whichsig_pvn(s, len); /* ...no, a brick */ |
58a26b12 | 1566 | mg->mg_private = (U16)i; |
708854f2 | 1567 | } |
86d86cad | 1568 | if (i <= 0) { |
84c7b88c BF |
1569 | if (sv) { |
1570 | SV *tmp = sv_newmortal(); | |
1571 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", | |
1572 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1573 | } | |
748a9306 LW |
1574 | return 0; |
1575 | } | |
2d4fcd5e AJ |
1576 | #ifdef HAS_SIGPROCMASK |
1577 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1578 | sigemptyset(&set); | |
1579 | sigaddset(&set,i); | |
1580 | sigprocmask(SIG_BLOCK, &set, &save); | |
1581 | ENTER; | |
9ff8e806 | 1582 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1583 | SAVEFREESV(save_sv); |
1584 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1585 | #endif | |
1586 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1587 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1588 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1589 | #endif |
23ada85b | 1590 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1591 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1592 | #endif |
2e34cc90 | 1593 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1594 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1595 | #endif |
2d4fcd5e | 1596 | to_dec = PL_psig_ptr[i]; |
38a124f0 NC |
1597 | if (sv) { |
1598 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); | |
1599 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ | |
79fd3822 NC |
1600 | |
1601 | /* Signals don't change name during the program's execution, so once | |
1602 | they're cached in the appropriate slot of PL_psig_name, they can | |
1603 | stay there. | |
1604 | ||
1605 | Ideally we'd find some way of making SVs at (C) compile time, or | |
1606 | at least, doing most of the work. */ | |
1607 | if (!PL_psig_name[i]) { | |
1608 | PL_psig_name[i] = newSVpvn(s, len); | |
1609 | SvREADONLY_on(PL_psig_name[i]); | |
1610 | } | |
38a124f0 | 1611 | } else { |
79fd3822 | 1612 | SvREFCNT_dec(PL_psig_name[i]); |
38a124f0 NC |
1613 | PL_psig_name[i] = NULL; |
1614 | PL_psig_ptr[i] = NULL; | |
1615 | } | |
748a9306 | 1616 | } |
38a124f0 | 1617 | if (sv && (isGV_with_GP(sv) || SvROK(sv))) { |
2d4fcd5e | 1618 | if (i) { |
5c1546dc | 1619 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1620 | } |
748a9306 | 1621 | else |
b37c2d43 | 1622 | *svp = SvREFCNT_inc_simple_NN(sv); |
38a124f0 | 1623 | } else { |
9dfa190b NC |
1624 | if (sv && SvOK(sv)) { |
1625 | s = SvPV_force(sv, len); | |
1626 | } else { | |
1627 | sv = NULL; | |
1628 | } | |
84c7b88c | 1629 | if (sv && memEQs(s, len,"IGNORE")) { |
9dfa190b | 1630 | if (i) { |
23ada85b | 1631 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
9dfa190b NC |
1632 | PL_sig_ignoring[i] = 1; |
1633 | (void)rsignal(i, PL_csighandlerp); | |
85b332e2 | 1634 | #else |
9dfa190b | 1635 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1636 | #endif |
9dfa190b | 1637 | } |
2d4fcd5e | 1638 | } |
84c7b88c | 1639 | else if (!sv || memEQs(s, len,"DEFAULT") || !len) { |
9dfa190b | 1640 | if (i) { |
2e34cc90 | 1641 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
9dfa190b NC |
1642 | PL_sig_defaulting[i] = 1; |
1643 | (void)rsignal(i, PL_csighandlerp); | |
2e34cc90 | 1644 | #else |
9dfa190b | 1645 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1646 | #endif |
9dfa190b NC |
1647 | } |
1648 | } | |
1649 | else { | |
1650 | /* | |
1651 | * We should warn if HINT_STRICT_REFS, but without | |
1652 | * access to a known hint bit in a known OP, we can't | |
1653 | * tell whether HINT_STRICT_REFS is in force or not. | |
1654 | */ | |
1655 | if (!strchr(s,':') && !strchr(s,'\'')) | |
1656 | Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"), | |
1657 | SV_GMAGIC); | |
1658 | if (i) | |
1659 | (void)rsignal(i, PL_csighandlerp); | |
1660 | else | |
1661 | *svp = SvREFCNT_inc_simple_NN(sv); | |
136e0459 | 1662 | } |
748a9306 | 1663 | } |
9dfa190b | 1664 | |
2d4fcd5e AJ |
1665 | #ifdef HAS_SIGPROCMASK |
1666 | if(i) | |
1667 | LEAVE; | |
1668 | #endif | |
ef8d46e8 | 1669 | SvREFCNT_dec(to_dec); |
79072805 LW |
1670 | return 0; |
1671 | } | |
64ca3a65 | 1672 | #endif /* !PERL_MICRO */ |
79072805 LW |
1673 | |
1674 | int | |
864dbfa3 | 1675 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1676 | { |
97aff369 | 1677 | dVAR; |
7918f24d | 1678 | PERL_ARGS_ASSERT_MAGIC_SETISA; |
8772537c | 1679 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1680 | |
89c14e2e | 1681 | /* Skip _isaelem because _isa will handle it shortly */ |
354b0578 | 1682 | if (PL_delaymagic & DM_ARRAY_ISA && mg->mg_type == PERL_MAGIC_isaelem) |
89c14e2e BB |
1683 | return 0; |
1684 | ||
0e446081 | 1685 | return magic_clearisa(NULL, mg); |
463ee0b2 LW |
1686 | } |
1687 | ||
0e446081 | 1688 | /* sv of NULL signifies that we're acting as magic_setisa. */ |
463ee0b2 | 1689 | int |
52b45067 RD |
1690 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1691 | { | |
1692 | dVAR; | |
1693 | HV* stash; | |
1694 | ||
7918f24d NC |
1695 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1696 | ||
52b45067 | 1697 | /* Bail out if destruction is going on */ |
627364f1 | 1698 | if(PL_phase == PERL_PHASE_DESTRUCT) return 0; |
52b45067 | 1699 | |
0e446081 NC |
1700 | if (sv) |
1701 | av_clear(MUTABLE_AV(sv)); | |
52b45067 | 1702 | |
6624142a FC |
1703 | if (SvTYPE(mg->mg_obj) != SVt_PVGV && SvSMAGICAL(mg->mg_obj)) |
1704 | /* This occurs with setisa_elem magic, which calls this | |
1705 | same function. */ | |
1706 | mg = mg_find(mg->mg_obj, PERL_MAGIC_isa); | |
1707 | ||
1708 | if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */ | |
1709 | SV **svp = AvARRAY((AV *)mg->mg_obj); | |
1710 | I32 items = AvFILLp((AV *)mg->mg_obj) + 1; | |
1711 | while (items--) { | |
1712 | stash = GvSTASH((GV *)*svp++); | |
1713 | if (stash && HvENAME(stash)) mro_isa_changed_in(stash); | |
1714 | } | |
1715 | ||
1716 | return 0; | |
1717 | } | |
1718 | ||
52b45067 | 1719 | stash = GvSTASH( |
6624142a | 1720 | (const GV *)mg->mg_obj |
52b45067 RD |
1721 | ); |
1722 | ||
00169e2c FC |
1723 | /* The stash may have been detached from the symbol table, so check its |
1724 | name before doing anything. */ | |
1725 | if (stash && HvENAME_get(stash)) | |
5562fa71 | 1726 | mro_isa_changed_in(stash); |
52b45067 RD |
1727 | |
1728 | return 0; | |
1729 | } | |
1730 | ||
1731 | int | |
864dbfa3 | 1732 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1733 | { |
85fbaab2 | 1734 | HV * const hv = MUTABLE_HV(LvTARG(sv)); |
6ff81951 | 1735 | I32 i = 0; |
7918f24d NC |
1736 | |
1737 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1738 | PERL_UNUSED_ARG(mg); |
7719e241 | 1739 | |
6ff81951 | 1740 | if (hv) { |
497b47a8 | 1741 | (void) hv_iterinit(hv); |
ad64d0ec | 1742 | if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
1b95d04f | 1743 | i = HvUSEDKEYS(hv); |
497b47a8 JH |
1744 | else { |
1745 | while (hv_iternext(hv)) | |
1746 | i++; | |
1747 | } | |
6ff81951 GS |
1748 | } |
1749 | ||
1750 | sv_setiv(sv, (IV)i); | |
1751 | return 0; | |
1752 | } | |
1753 | ||
1754 | int | |
864dbfa3 | 1755 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1756 | { |
7918f24d | 1757 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1758 | PERL_UNUSED_ARG(mg); |
946ec16e | 1759 | if (LvTARG(sv)) { |
85fbaab2 | 1760 | hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv)); |
946ec16e | 1761 | } |
1762 | return 0; | |
ac27b0f5 | 1763 | } |
946ec16e | 1764 | |
efaf3674 DM |
1765 | /* |
1766 | =for apidoc magic_methcall | |
1767 | ||
1768 | Invoke a magic method (like FETCH). | |
1769 | ||
2baee27b FC |
1770 | C<sv> and C<mg> are the tied thingy and the tie magic. |
1771 | ||
1772 | C<meth> is the name of the method to call. | |
1773 | ||
1774 | C<argc> is the number of args (in addition to $self) to pass to the method. | |
1775 | ||
1776 | The C<flags> can be: | |
1777 | ||
1778 | G_DISCARD invoke method with G_DISCARD flag and don't | |
1779 | return a value | |
1780 | G_UNDEF_FILL fill the stack with argc pointers to | |
1781 | PL_sv_undef | |
1782 | ||
1783 | The arguments themselves are any values following the C<flags> argument. | |
efaf3674 DM |
1784 | |
1785 | Returns the SV (if any) returned by the method, or NULL on failure. | |
1786 | ||
1787 | ||
1788 | =cut | |
1789 | */ | |
1790 | ||
1791 | SV* | |
c7a0c747 | 1792 | Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
046b0c7d | 1793 | U32 argc, ...) |
a0d0e21e | 1794 | { |
97aff369 | 1795 | dVAR; |
a0d0e21e | 1796 | dSP; |
efaf3674 | 1797 | SV* ret = NULL; |
463ee0b2 | 1798 | |
7918f24d NC |
1799 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1800 | ||
efaf3674 | 1801 | ENTER; |
d1d7a15d NC |
1802 | |
1803 | if (flags & G_WRITING_TO_STDERR) { | |
1804 | SAVETMPS; | |
1805 | ||
1806 | save_re_context(); | |
1807 | SAVESPTR(PL_stderrgv); | |
1808 | PL_stderrgv = NULL; | |
1809 | } | |
1810 | ||
efaf3674 | 1811 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1812 | PUSHMARK(SP); |
efaf3674 | 1813 | |
67549bd2 NC |
1814 | EXTEND(SP, argc+1); |
1815 | PUSHs(SvTIED_obj(sv, mg)); | |
1816 | if (flags & G_UNDEF_FILL) { | |
1817 | while (argc--) { | |
efaf3674 | 1818 | PUSHs(&PL_sv_undef); |
93965878 | 1819 | } |
67549bd2 | 1820 | } else if (argc > 0) { |
046b0c7d NC |
1821 | va_list args; |
1822 | va_start(args, argc); | |
1823 | ||
1824 | do { | |
1825 | SV *const sv = va_arg(args, SV *); | |
1826 | PUSHs(sv); | |
1827 | } while (--argc); | |
1828 | ||
1829 | va_end(args); | |
88e89b8a | 1830 | } |
463ee0b2 | 1831 | PUTBACK; |
efaf3674 DM |
1832 | if (flags & G_DISCARD) { |
1833 | call_method(meth, G_SCALAR|G_DISCARD); | |
1834 | } | |
1835 | else { | |
1836 | if (call_method(meth, G_SCALAR)) | |
1837 | ret = *PL_stack_sp--; | |
1838 | } | |
1839 | POPSTACK; | |
d1d7a15d NC |
1840 | if (flags & G_WRITING_TO_STDERR) |
1841 | FREETMPS; | |
efaf3674 DM |
1842 | LEAVE; |
1843 | return ret; | |
1844 | } | |
1845 | ||
1846 | ||
1847 | /* wrapper for magic_methcall that creates the first arg */ | |
463ee0b2 | 1848 | |
efaf3674 | 1849 | STATIC SV* |
c7a0c747 | 1850 | S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
efaf3674 DM |
1851 | int n, SV *val) |
1852 | { | |
1853 | dVAR; | |
1854 | SV* arg1 = NULL; | |
1855 | ||
1856 | PERL_ARGS_ASSERT_MAGIC_METHCALL1; | |
1857 | ||
1858 | if (mg->mg_ptr) { | |
1859 | if (mg->mg_len >= 0) { | |
db4b3a1d | 1860 | arg1 = newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
efaf3674 DM |
1861 | } |
1862 | else if (mg->mg_len == HEf_SVKEY) | |
1863 | arg1 = MUTABLE_SV(mg->mg_ptr); | |
1864 | } | |
1865 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { | |
db4b3a1d | 1866 | arg1 = newSViv((IV)(mg->mg_len)); |
efaf3674 DM |
1867 | sv_2mortal(arg1); |
1868 | } | |
1869 | if (!arg1) { | |
046b0c7d | 1870 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n - 1, val); |
efaf3674 | 1871 | } |
046b0c7d | 1872 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n, arg1, val); |
946ec16e | 1873 | } |
1874 | ||
76e3520e | 1875 | STATIC int |
e1ec3a88 | 1876 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1877 | { |
efaf3674 DM |
1878 | dVAR; |
1879 | SV* ret; | |
463ee0b2 | 1880 | |
7918f24d NC |
1881 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1882 | ||
efaf3674 DM |
1883 | ret = magic_methcall1(sv, mg, meth, 0, 1, NULL); |
1884 | if (ret) | |
1885 | sv_setsv(sv, ret); | |
a0d0e21e LW |
1886 | return 0; |
1887 | } | |
463ee0b2 | 1888 | |
a0d0e21e | 1889 | int |
864dbfa3 | 1890 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1891 | { |
7918f24d NC |
1892 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1893 | ||
fd69380d | 1894 | if (mg->mg_type == PERL_MAGIC_tiedelem) |
a0d0e21e | 1895 | mg->mg_flags |= MGf_GSKIP; |
58f82c5c | 1896 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1897 | return 0; |
1898 | } | |
1899 | ||
1900 | int | |
864dbfa3 | 1901 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1902 | { |
efaf3674 | 1903 | dVAR; |
b112cff9 DM |
1904 | MAGIC *tmg; |
1905 | SV *val; | |
7918f24d NC |
1906 | |
1907 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1908 | ||
b112cff9 DM |
1909 | /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to |
1910 | * STORE() is not $val, but rather a PVLV (the sv in this call), whose | |
1911 | * public flags indicate its value based on copying from $val. Doing | |
1912 | * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us. | |
1913 | * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes | |
1914 | * wrong if $val happened to be tainted, as sv hasn't got magic | |
1915 | * enabled, even though taint magic is in the chain. In which case, | |
1916 | * fake up a temporary tainted value (this is easier than temporarily | |
1917 | * re-enabling magic on sv). */ | |
1918 | ||
1919 | if (PL_tainting && (tmg = mg_find(sv, PERL_MAGIC_taint)) | |
1920 | && (tmg->mg_len & 1)) | |
1921 | { | |
1922 | val = sv_mortalcopy(sv); | |
1923 | SvTAINTED_on(val); | |
1924 | } | |
1925 | else | |
1926 | val = sv; | |
1927 | ||
efaf3674 | 1928 | magic_methcall1(sv, mg, "STORE", G_DISCARD, 2, val); |
463ee0b2 LW |
1929 | return 0; |
1930 | } | |
1931 | ||
1932 | int | |
864dbfa3 | 1933 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1934 | { |
7918f24d NC |
1935 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1936 | ||
4c13be3f | 1937 | if (mg->mg_type == PERL_MAGIC_tiedscalar) return 0; |
a0d0e21e LW |
1938 | return magic_methpack(sv,mg,"DELETE"); |
1939 | } | |
463ee0b2 | 1940 | |
93965878 NIS |
1941 | |
1942 | U32 | |
864dbfa3 | 1943 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1944 | { |
efaf3674 | 1945 | dVAR; |
22846ab4 | 1946 | I32 retval = 0; |
efaf3674 | 1947 | SV* retsv; |
93965878 | 1948 | |
7918f24d NC |
1949 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1950 | ||
efaf3674 DM |
1951 | retsv = magic_methcall1(sv, mg, "FETCHSIZE", 0, 1, NULL); |
1952 | if (retsv) { | |
1953 | retval = SvIV(retsv)-1; | |
22846ab4 AB |
1954 | if (retval < -1) |
1955 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1956 | } |
22846ab4 | 1957 | return (U32) retval; |
93965878 NIS |
1958 | } |
1959 | ||
cea2e8a9 GS |
1960 | int |
1961 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1962 | { |
efaf3674 | 1963 | dVAR; |
463ee0b2 | 1964 | |
7918f24d NC |
1965 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1966 | ||
046b0c7d | 1967 | Perl_magic_methcall(aTHX_ sv, mg, "CLEAR", G_DISCARD, 0); |
463ee0b2 LW |
1968 | return 0; |
1969 | } | |
1970 | ||
1971 | int | |
864dbfa3 | 1972 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1973 | { |
efaf3674 DM |
1974 | dVAR; |
1975 | SV* ret; | |
463ee0b2 | 1976 | |
7918f24d NC |
1977 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1978 | ||
046b0c7d NC |
1979 | ret = SvOK(key) ? Perl_magic_methcall(aTHX_ sv, mg, "NEXTKEY", 0, 1, key) |
1980 | : Perl_magic_methcall(aTHX_ sv, mg, "FIRSTKEY", 0, 0); | |
efaf3674 DM |
1981 | if (ret) |
1982 | sv_setsv(key,ret); | |
79072805 LW |
1983 | return 0; |
1984 | } | |
1985 | ||
1986 | int | |
1146e912 | 1987 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1988 | { |
7918f24d NC |
1989 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1990 | ||
a0d0e21e | 1991 | return magic_methpack(sv,mg,"EXISTS"); |
ac27b0f5 | 1992 | } |
a0d0e21e | 1993 | |
a3bcc51e TP |
1994 | SV * |
1995 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1996 | { | |
efaf3674 | 1997 | dVAR; |
5fcbf73d | 1998 | SV *retval; |
ad64d0ec NC |
1999 | SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg); |
2000 | HV * const pkg = SvSTASH((const SV *)SvRV(tied)); | |
a3bcc51e | 2001 | |
7918f24d NC |
2002 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
2003 | ||
a3bcc51e TP |
2004 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
2005 | SV *key; | |
bfcb3514 | 2006 | if (HvEITER_get(hv)) |
a3bcc51e TP |
2007 | /* we are in an iteration so the hash cannot be empty */ |
2008 | return &PL_sv_yes; | |
2009 | /* no xhv_eiter so now use FIRSTKEY */ | |
2010 | key = sv_newmortal(); | |
ad64d0ec | 2011 | magic_nextpack(MUTABLE_SV(hv), mg, key); |
bfcb3514 | 2012 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
2013 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
2014 | } | |
2015 | ||
2016 | /* there is a SCALAR method that we can call */ | |
046b0c7d | 2017 | retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(hv), mg, "SCALAR", 0, 0); |
efaf3674 | 2018 | if (!retval) |
5fcbf73d | 2019 | retval = &PL_sv_undef; |
a3bcc51e TP |
2020 | return retval; |
2021 | } | |
2022 | ||
a0d0e21e | 2023 | int |
864dbfa3 | 2024 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2025 | { |
97aff369 | 2026 | dVAR; |
8772537c AL |
2027 | GV * const gv = PL_DBline; |
2028 | const I32 i = SvTRUE(sv); | |
2029 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 2030 | atoi(MgPV_nolen_const(mg)), FALSE); |
7918f24d NC |
2031 | |
2032 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
2033 | ||
8772537c AL |
2034 | if (svp && SvIOKp(*svp)) { |
2035 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
2036 | if (o) { | |
7bbbc3c0 NC |
2037 | #ifdef PERL_DEBUG_READONLY_OPS |
2038 | Slab_to_rw(OpSLAB(o)); | |
2039 | #endif | |
8772537c AL |
2040 | /* set or clear breakpoint in the relevant control op */ |
2041 | if (i) | |
2042 | o->op_flags |= OPf_SPECIAL; | |
2043 | else | |
2044 | o->op_flags &= ~OPf_SPECIAL; | |
7bbbc3c0 NC |
2045 | #ifdef PERL_DEBUG_READONLY_OPS |
2046 | Slab_to_ro(OpSLAB(o)); | |
2047 | #endif | |
8772537c | 2048 | } |
5df8de69 | 2049 | } |
79072805 LW |
2050 | return 0; |
2051 | } | |
2052 | ||
2053 | int | |
8772537c | 2054 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 2055 | { |
97aff369 | 2056 | dVAR; |
502c6561 | 2057 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2058 | |
2059 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
2060 | ||
83bf042f | 2061 | if (obj) { |
e1dccc0d | 2062 | sv_setiv(sv, AvFILL(obj)); |
83bf042f NC |
2063 | } else { |
2064 | SvOK_off(sv); | |
2065 | } | |
79072805 LW |
2066 | return 0; |
2067 | } | |
2068 | ||
2069 | int | |
864dbfa3 | 2070 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2071 | { |
97aff369 | 2072 | dVAR; |
502c6561 | 2073 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2074 | |
2075 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
2076 | ||
83bf042f | 2077 | if (obj) { |
e1dccc0d | 2078 | av_fill(obj, SvIV(sv)); |
83bf042f | 2079 | } else { |
a2a5de95 NC |
2080 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
2081 | "Attempt to set length of freed array"); | |
83bf042f NC |
2082 | } |
2083 | return 0; | |
2084 | } | |
2085 | ||
2086 | int | |
83f29afa VP |
2087 | Perl_magic_cleararylen_p(pTHX_ SV *sv, MAGIC *mg) |
2088 | { | |
2089 | dVAR; | |
2090 | ||
2091 | PERL_ARGS_ASSERT_MAGIC_CLEARARYLEN_P; | |
2092 | PERL_UNUSED_ARG(sv); | |
2093 | ||
2094 | /* Reset the iterator when the array is cleared */ | |
3565fbf3 VP |
2095 | #if IVSIZE == I32SIZE |
2096 | *((IV *) &(mg->mg_len)) = 0; | |
2097 | #else | |
83f29afa VP |
2098 | if (mg->mg_ptr) |
2099 | *((IV *) mg->mg_ptr) = 0; | |
3565fbf3 | 2100 | #endif |
83f29afa VP |
2101 | |
2102 | return 0; | |
2103 | } | |
2104 | ||
2105 | int | |
83bf042f NC |
2106 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) |
2107 | { | |
97aff369 | 2108 | dVAR; |
7918f24d NC |
2109 | |
2110 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; | |
53c1dcc0 | 2111 | PERL_UNUSED_ARG(sv); |
7918f24d | 2112 | |
94f3782b DM |
2113 | /* during global destruction, mg_obj may already have been freed */ |
2114 | if (PL_in_clean_all) | |
1ea47f64 | 2115 | return 0; |
94f3782b | 2116 | |
83bf042f NC |
2117 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
2118 | ||
2119 | if (mg) { | |
2120 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
2121 | reference. Hence the we (the array) are about to go away with it | |
2122 | still pointing at us. Clear its pointer, else it would be pointing | |
2123 | at free memory. See the comment in sv_magic about reference loops, | |
2124 | and why it can't own a reference to us. */ | |
2125 | mg->mg_obj = 0; | |
2126 | } | |
a0d0e21e LW |
2127 | return 0; |
2128 | } | |
2129 | ||
2130 | int | |
864dbfa3 | 2131 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2132 | { |
97aff369 | 2133 | dVAR; |
16eb5365 | 2134 | SV* const lsv = LvTARG(sv); |
7918f24d NC |
2135 | |
2136 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
16eb5365 | 2137 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2138 | |
a0d0e21e | 2139 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
2140 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
2141 | if (found && found->mg_len >= 0) { | |
2142 | I32 i = found->mg_len; | |
7e2040f0 | 2143 | if (DO_UTF8(lsv)) |
a0ed51b3 | 2144 | sv_pos_b2u(lsv, &i); |
e1dccc0d | 2145 | sv_setiv(sv, i); |
a0d0e21e LW |
2146 | return 0; |
2147 | } | |
2148 | } | |
0c34ef67 | 2149 | SvOK_off(sv); |
a0d0e21e LW |
2150 | return 0; |
2151 | } | |
2152 | ||
2153 | int | |
864dbfa3 | 2154 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2155 | { |
97aff369 | 2156 | dVAR; |
16eb5365 | 2157 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
2158 | SSize_t pos; |
2159 | STRLEN len; | |
c00206c8 | 2160 | STRLEN ulen = 0; |
53d44271 | 2161 | MAGIC* found; |
a0d0e21e | 2162 | |
7918f24d | 2163 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
16eb5365 | 2164 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2165 | |
a0d0e21e | 2166 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
2167 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
2168 | else | |
2169 | found = NULL; | |
2170 | if (!found) { | |
a0d0e21e LW |
2171 | if (!SvOK(sv)) |
2172 | return 0; | |
d83f0a82 NC |
2173 | #ifdef PERL_OLD_COPY_ON_WRITE |
2174 | if (SvIsCOW(lsv)) | |
2175 | sv_force_normal_flags(lsv, 0); | |
2176 | #endif | |
3881461a | 2177 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 2178 | NULL, 0); |
a0d0e21e LW |
2179 | } |
2180 | else if (!SvOK(sv)) { | |
3881461a | 2181 | found->mg_len = -1; |
a0d0e21e LW |
2182 | return 0; |
2183 | } | |
4bac9ae4 | 2184 | len = SvPOK_nog(lsv) ? SvCUR(lsv) : sv_len(lsv); |
a0d0e21e | 2185 | |
e1dccc0d | 2186 | pos = SvIV(sv); |
a0ed51b3 | 2187 | |
7e2040f0 | 2188 | if (DO_UTF8(lsv)) { |
92cf6698 | 2189 | ulen = sv_len_utf8_nomg(lsv); |
a0ed51b3 LW |
2190 | if (ulen) |
2191 | len = ulen; | |
a0ed51b3 LW |
2192 | } |
2193 | ||
a0d0e21e LW |
2194 | if (pos < 0) { |
2195 | pos += len; | |
2196 | if (pos < 0) | |
2197 | pos = 0; | |
2198 | } | |
eb160463 | 2199 | else if (pos > (SSize_t)len) |
a0d0e21e | 2200 | pos = len; |
a0ed51b3 LW |
2201 | |
2202 | if (ulen) { | |
92cf6698 | 2203 | pos = sv_pos_u2b_flags(lsv, pos, 0, 0); |
a0ed51b3 | 2204 | } |
727405f8 | 2205 | |
3881461a AL |
2206 | found->mg_len = pos; |
2207 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 2208 | |
79072805 LW |
2209 | return 0; |
2210 | } | |
2211 | ||
2212 | int | |
864dbfa3 | 2213 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2214 | { |
2215 | STRLEN len; | |
35a4481c | 2216 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2217 | const char * const tmps = SvPV_const(lsv,len); |
777f7c56 EB |
2218 | STRLEN offs = LvTARGOFF(sv); |
2219 | STRLEN rem = LvTARGLEN(sv); | |
83f78d1a FC |
2220 | const bool negoff = LvFLAGS(sv) & 1; |
2221 | const bool negrem = LvFLAGS(sv) & 2; | |
7918f24d NC |
2222 | |
2223 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2224 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2225 | |
83f78d1a | 2226 | if (!translate_substr_offsets( |
a4036ec1 | 2227 | SvUTF8(lsv) ? sv_len_utf8_nomg(lsv) : len, |
83f78d1a FC |
2228 | negoff ? -(IV)offs : (IV)offs, !negoff, |
2229 | negrem ? -(IV)rem : (IV)rem, !negrem, &offs, &rem | |
2230 | )) { | |
2231 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string"); | |
2232 | sv_setsv_nomg(sv, &PL_sv_undef); | |
2233 | return 0; | |
2234 | } | |
2235 | ||
9aa983d2 | 2236 | if (SvUTF8(lsv)) |
d931b1be | 2237 | offs = sv_pos_u2b_flags(lsv, offs, &rem, SV_CONST_RETURN); |
1c900557 | 2238 | sv_setpvn(sv, tmps + offs, rem); |
9aa983d2 | 2239 | if (SvUTF8(lsv)) |
2ef4b674 | 2240 | SvUTF8_on(sv); |
6ff81951 GS |
2241 | return 0; |
2242 | } | |
2243 | ||
2244 | int | |
864dbfa3 | 2245 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2246 | { |
97aff369 | 2247 | dVAR; |
83f78d1a | 2248 | STRLEN len, lsv_len, oldtarglen, newtarglen; |
5fcbf73d | 2249 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2250 | SV * const lsv = LvTARG(sv); |
777f7c56 EB |
2251 | STRLEN lvoff = LvTARGOFF(sv); |
2252 | STRLEN lvlen = LvTARGLEN(sv); | |
83f78d1a FC |
2253 | const bool negoff = LvFLAGS(sv) & 1; |
2254 | const bool neglen = LvFLAGS(sv) & 2; | |
7918f24d NC |
2255 | |
2256 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2257 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2258 | |
a74fb2cd FC |
2259 | SvGETMAGIC(lsv); |
2260 | if (SvROK(lsv)) | |
2261 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), | |
2262 | "Attempt to use reference as lvalue in substr" | |
2263 | ); | |
ab445a17 | 2264 | if (SvUTF8(lsv)) lsv_len = sv_len_utf8_nomg(lsv); |
83f78d1a FC |
2265 | else (void)SvPV_nomg(lsv,lsv_len); |
2266 | if (!translate_substr_offsets( | |
2267 | lsv_len, | |
2268 | negoff ? -(IV)lvoff : (IV)lvoff, !negoff, | |
2269 | neglen ? -(IV)lvlen : (IV)lvlen, !neglen, &lvoff, &lvlen | |
2270 | )) | |
2271 | Perl_croak(aTHX_ "substr outside of string"); | |
2272 | oldtarglen = lvlen; | |
1aa99e6b | 2273 | if (DO_UTF8(sv)) { |
9aa983d2 | 2274 | sv_utf8_upgrade(lsv); |
d931b1be | 2275 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
a74fb2cd | 2276 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2277 | newtarglen = sv_len_utf8(sv); |
9aa983d2 JH |
2278 | SvUTF8_on(lsv); |
2279 | } | |
9bf12eaf | 2280 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 2281 | const char *utf8; |
d931b1be | 2282 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
83f78d1a | 2283 | newtarglen = len; |
5fcbf73d | 2284 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
a74fb2cd | 2285 | sv_insert_flags(lsv, lvoff, lvlen, utf8, len, 0); |
5fcbf73d | 2286 | Safefree(utf8); |
1aa99e6b | 2287 | } |
b76f3ce2 | 2288 | else { |
a74fb2cd | 2289 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2290 | newtarglen = len; |
b76f3ce2 | 2291 | } |
83f78d1a FC |
2292 | if (!neglen) LvTARGLEN(sv) = newtarglen; |
2293 | if (negoff) LvTARGOFF(sv) += newtarglen - oldtarglen; | |
b76f3ce2 | 2294 | |
79072805 LW |
2295 | return 0; |
2296 | } | |
2297 | ||
2298 | int | |
864dbfa3 | 2299 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2300 | { |
97aff369 | 2301 | dVAR; |
7918f24d NC |
2302 | |
2303 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; | |
8772537c | 2304 | PERL_UNUSED_ARG(sv); |
7918f24d | 2305 | |
27cc343c | 2306 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2307 | return 0; |
2308 | } | |
2309 | ||
2310 | int | |
864dbfa3 | 2311 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2312 | { |
97aff369 | 2313 | dVAR; |
7918f24d NC |
2314 | |
2315 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; | |
8772537c | 2316 | PERL_UNUSED_ARG(sv); |
7918f24d | 2317 | |
b01e650a DM |
2318 | /* update taint status */ |
2319 | if (PL_tainted) | |
2320 | mg->mg_len |= 1; | |
2321 | else | |
2322 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2323 | return 0; |
2324 | } | |
2325 | ||
2326 | int | |
864dbfa3 | 2327 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2328 | { |
35a4481c | 2329 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2330 | |
2331 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2332 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2333 | |
6136c704 AL |
2334 | if (lsv) |
2335 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2336 | else | |
0c34ef67 | 2337 | SvOK_off(sv); |
6ff81951 | 2338 | |
6ff81951 GS |
2339 | return 0; |
2340 | } | |
2341 | ||
2342 | int | |
864dbfa3 | 2343 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2344 | { |
7918f24d | 2345 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2346 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2347 | do_vecset(sv); /* XXX slurp this routine */ |
2348 | return 0; | |
2349 | } | |
2350 | ||
2351 | int | |
864dbfa3 | 2352 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 2353 | { |
97aff369 | 2354 | dVAR; |
a0714e2c | 2355 | SV *targ = NULL; |
7918f24d NC |
2356 | |
2357 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2358 | ||
5f05dabc | 2359 | if (LvTARGLEN(sv)) { |
68dc0745 | 2360 | if (mg->mg_obj) { |
8772537c | 2361 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2362 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0); |
6d822dc4 MS |
2363 | if (he) |
2364 | targ = HeVAL(he); | |
68dc0745 | 2365 | } |
2366 | else { | |
502c6561 | 2367 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
68dc0745 | 2368 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2369 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2370 | } | |
46da273f | 2371 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2372 | /* somebody else defined it for us */ |
2373 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2374 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2375 | LvTARGLEN(sv) = 0; |
2376 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2377 | mg->mg_obj = NULL; |
68dc0745 | 2378 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2379 | } | |
5f05dabc | 2380 | } |
71be2cbc | 2381 | else |
2382 | targ = LvTARG(sv); | |
3280af22 | 2383 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 2384 | return 0; |
2385 | } | |
2386 | ||
2387 | int | |
864dbfa3 | 2388 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2389 | { |
7918f24d | 2390 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2391 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2392 | if (LvTARGLEN(sv)) |
68dc0745 | 2393 | vivify_defelem(sv); |
2394 | if (LvTARG(sv)) { | |
5f05dabc | 2395 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2396 | SvSETMAGIC(LvTARG(sv)); |
2397 | } | |
5f05dabc | 2398 | return 0; |
2399 | } | |
2400 | ||
71be2cbc | 2401 | void |
864dbfa3 | 2402 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2403 | { |
97aff369 | 2404 | dVAR; |
74e13ce4 | 2405 | MAGIC *mg; |
a0714e2c | 2406 | SV *value = NULL; |
71be2cbc | 2407 | |
7918f24d NC |
2408 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2409 | ||
14befaf4 | 2410 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2411 | return; |
68dc0745 | 2412 | if (mg->mg_obj) { |
8772537c | 2413 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2414 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0); |
6d822dc4 MS |
2415 | if (he) |
2416 | value = HeVAL(he); | |
3280af22 | 2417 | if (!value || value == &PL_sv_undef) |
be2597df | 2418 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2419 | } |
68dc0745 | 2420 | else { |
502c6561 | 2421 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
5aabfad6 | 2422 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2423 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2424 | else { |
d4c19fe8 | 2425 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2426 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2427 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2428 | } |
2429 | } | |
b37c2d43 | 2430 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2431 | SvREFCNT_dec(LvTARG(sv)); |
2432 | LvTARG(sv) = value; | |
71be2cbc | 2433 | LvTARGLEN(sv) = 0; |
68dc0745 | 2434 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2435 | mg->mg_obj = NULL; |
68dc0745 | 2436 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2437 | } |
2438 | ||
2439 | int | |
864dbfa3 | 2440 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2441 | { |
7918f24d | 2442 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
5648c0ae DM |
2443 | Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj)); |
2444 | return 0; | |
810b8aa5 GS |
2445 | } |
2446 | ||
2447 | int | |
864dbfa3 | 2448 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2449 | { |
7918f24d | 2450 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2451 | PERL_UNUSED_CONTEXT; |
0177730e | 2452 | PERL_UNUSED_ARG(sv); |
565764a8 | 2453 | mg->mg_len = -1; |
93a17b20 LW |
2454 | return 0; |
2455 | } | |
2456 | ||
2457 | int | |
864dbfa3 | 2458 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2459 | { |
35a4481c | 2460 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2461 | |
7918f24d NC |
2462 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2463 | ||
79072805 | 2464 | if (uf && uf->uf_set) |
24f81a43 | 2465 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2466 | return 0; |
2467 | } | |
2468 | ||
c277df42 | 2469 | int |
faf82a0b AE |
2470 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2471 | { | |
488344d2 | 2472 | const char type = mg->mg_type; |
7918f24d NC |
2473 | |
2474 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2475 | ||
488344d2 NC |
2476 | if (type == PERL_MAGIC_qr) { |
2477 | } else if (type == PERL_MAGIC_bm) { | |
2478 | SvTAIL_off(sv); | |
2479 | SvVALID_off(sv); | |
2480 | } else { | |
2481 | assert(type == PERL_MAGIC_fm); | |
488344d2 NC |
2482 | } |
2483 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2484 | } |
2485 | ||
7a4c00b4 | 2486 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2487 | int |
864dbfa3 | 2488 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2489 | { |
7918f24d NC |
2490 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2491 | ||
bbce6d69 | 2492 | /* |
838b5b74 | 2493 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2494 | * and vanished with a faint plop. |
2495 | */ | |
96a5add6 | 2496 | PERL_UNUSED_CONTEXT; |
8772537c | 2497 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2498 | if (mg->mg_ptr) { |
2499 | Safefree(mg->mg_ptr); | |
2500 | mg->mg_ptr = NULL; | |
565764a8 | 2501 | mg->mg_len = -1; |
7a4c00b4 | 2502 | } |
bbce6d69 | 2503 | return 0; |
2504 | } | |
7a4c00b4 | 2505 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2506 | |
7e8c5dac HS |
2507 | /* Just clear the UTF-8 cache data. */ |
2508 | int | |
2509 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2510 | { | |
7918f24d | 2511 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2512 | PERL_UNUSED_CONTEXT; |
8772537c | 2513 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2514 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2515 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2516 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2517 | return 0; | |
2518 | } | |
2519 | ||
bbce6d69 | 2520 | int |
864dbfa3 | 2521 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2522 | { |
97aff369 | 2523 | dVAR; |
eb578fdb KW |
2524 | const char *s; |
2525 | I32 paren; | |
2526 | const REGEXP * rx; | |
2fdbfb4d | 2527 | const char * const remaining = mg->mg_ptr + 1; |
79072805 | 2528 | I32 i; |
8990e307 | 2529 | STRLEN len; |
125b9982 | 2530 | MAGIC *tmg; |
2fdbfb4d | 2531 | |
7918f24d NC |
2532 | PERL_ARGS_ASSERT_MAGIC_SET; |
2533 | ||
79072805 | 2534 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
2535 | case '\015': /* $^MATCH */ |
2536 | if (strEQ(remaining, "ATCH")) | |
2537 | goto do_match; | |
2538 | case '`': /* ${^PREMATCH} caught below */ | |
2539 | do_prematch: | |
f1b875a0 | 2540 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
2541 | goto setparen; |
2542 | case '\'': /* ${^POSTMATCH} caught below */ | |
2543 | do_postmatch: | |
f1b875a0 | 2544 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
2545 | goto setparen; |
2546 | case '&': | |
2547 | do_match: | |
f1b875a0 | 2548 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d AB |
2549 | goto setparen; |
2550 | case '1': case '2': case '3': case '4': | |
2551 | case '5': case '6': case '7': case '8': case '9': | |
104a8018 | 2552 | paren = atoi(mg->mg_ptr); |
2fdbfb4d | 2553 | setparen: |
1e05feb3 | 2554 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9bad346 | 2555 | setparen_got_rx: |
2fdbfb4d | 2556 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
1e05feb3 | 2557 | } else { |
2fdbfb4d AB |
2558 | /* Croak with a READONLY error when a numbered match var is |
2559 | * set without a previous pattern match. Unless it's C<local $1> | |
2560 | */ | |
d9bad346 | 2561 | croakparen: |
2fdbfb4d | 2562 | if (!PL_localizing) { |
6ad8f254 | 2563 | Perl_croak_no_modify(aTHX); |
2fdbfb4d AB |
2564 | } |
2565 | } | |
9b9e0be4 | 2566 | break; |
748a9306 | 2567 | case '\001': /* ^A */ |
f2da823f FC |
2568 | if (SvOK(sv)) sv_copypv(PL_bodytarget, sv); |
2569 | else SvOK_off(PL_bodytarget); | |
64eff8b7 DM |
2570 | FmLINES(PL_bodytarget) = 0; |
2571 | if (SvPOK(PL_bodytarget)) { | |
2572 | char *s = SvPVX(PL_bodytarget); | |
2573 | while ( ((s = strchr(s, '\n'))) ) { | |
2574 | FmLINES(PL_bodytarget)++; | |
2575 | s++; | |
2576 | } | |
2577 | } | |
125b9982 NT |
2578 | /* mg_set() has temporarily made sv non-magical */ |
2579 | if (PL_tainting) { | |
2580 | if ((tmg = mg_find(sv,PERL_MAGIC_taint)) && tmg->mg_len & 1) | |
2581 | SvTAINTED_on(PL_bodytarget); | |
2582 | else | |
2583 | SvTAINTED_off(PL_bodytarget); | |
2584 | } | |
748a9306 | 2585 | break; |
49460fe6 | 2586 | case '\003': /* ^C */ |
f2338a2e | 2587 | PL_minus_c = cBOOL(SvIV(sv)); |
49460fe6 NIS |
2588 | break; |
2589 | ||
79072805 | 2590 | case '\004': /* ^D */ |
b4ab917c | 2591 | #ifdef DEBUGGING |
b83604b4 | 2592 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2593 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
a58fb6f9 CS |
2594 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
2595 | dump_all_perl(!DEBUG_B_TEST); | |
b4ab917c | 2596 | #else |
38ab35f8 | 2597 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2598 | #endif |
79072805 | 2599 | break; |
28f23441 | 2600 | case '\005': /* ^E */ |
d0063567 | 2601 | if (*(mg->mg_ptr+1) == '\0') { |
e37778c2 | 2602 | #ifdef VMS |
38ab35f8 | 2603 | set_vaxc_errno(SvIV(sv)); |
e37778c2 NC |
2604 | #else |
2605 | # ifdef WIN32 | |
d0063567 | 2606 | SetLastError( SvIV(sv) ); |
e37778c2 NC |
2607 | # else |
2608 | # ifdef OS2 | |
38ab35f8 | 2609 | os2_setsyserrno(SvIV(sv)); |
e37778c2 | 2610 | # else |
d0063567 | 2611 | /* will anyone ever use this? */ |
38ab35f8 | 2612 | SETERRNO(SvIV(sv), 4); |
048c1ddf IZ |
2613 | # endif |
2614 | # endif | |
22fae026 | 2615 | #endif |
d0063567 DK |
2616 | } |
2617 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
ef8d46e8 | 2618 | SvREFCNT_dec(PL_encoding); |
d0063567 DK |
2619 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2620 | PL_encoding = newSVsv(sv); | |
2621 | } | |
2622 | else { | |
a0714e2c | 2623 | PL_encoding = NULL; |
d0063567 DK |
2624 | } |
2625 | } | |
2626 | break; | |
79072805 | 2627 | case '\006': /* ^F */ |
38ab35f8 | 2628 | PL_maxsysfd = SvIV(sv); |
79072805 | 2629 | break; |
a0d0e21e | 2630 | case '\010': /* ^H */ |
38ab35f8 | 2631 | PL_hints = SvIV(sv); |
a0d0e21e | 2632 | break; |
9d116dd7 | 2633 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2634 | Safefree(PL_inplace); |
bd61b366 | 2635 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2636 | break; |
d9bad346 FC |
2637 | case '\016': /* ^N */ |
2638 | if (PL_curpm && (rx = PM_GETRE(PL_curpm)) | |
2639 | && (paren = RX_LASTCLOSEPAREN(rx))) goto setparen_got_rx; | |
2640 | goto croakparen; | |
28f23441 | 2641 | case '\017': /* ^O */ |
ac27b0f5 | 2642 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2643 | Safefree(PL_osname); |
bd61b366 | 2644 | PL_osname = NULL; |
3511154c DM |
2645 | if (SvOK(sv)) { |
2646 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2647 | PL_osname = savesvpv(sv); |
3511154c | 2648 | } |
ac27b0f5 NIS |
2649 | } |
2650 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2651 | STRLEN len; |
2652 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2653 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 | 2654 | SV *tmp; |
8b850bd5 NC |
2655 | |
2656 | ||
2657 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
f747ebd6 | 2658 | PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; |
8b850bd5 NC |
2659 | |
2660 | /* Opening for input is more common than opening for output, so | |
2661 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 | 2662 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
f747ebd6 Z |
2663 | SvUTF8(sv)) |
2664 | : newSVpvs_flags("", SvUTF8(sv)); | |
2665 | (void)hv_stores(GvHV(PL_hintgv), "open>", tmp); | |
2666 | mg_set(tmp); | |
8b850bd5 | 2667 | |
f747ebd6 Z |
2668 | tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len, |
2669 | SvUTF8(sv)); | |
2670 | (void)hv_stores(GvHV(PL_hintgv), "open<", tmp); | |
2671 | mg_set(tmp); | |
ac27b0f5 | 2672 | } |
28f23441 | 2673 | break; |
79072805 | 2674 | case '\020': /* ^P */ |
2fdbfb4d AB |
2675 | if (*remaining == '\0') { /* ^P */ |
2676 | PL_perldb = SvIV(sv); | |
2677 | if (PL_perldb && !PL_DBsingle) | |
2678 | init_debugger(); | |
2679 | break; | |
2680 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2681 | goto do_prematch; | |
2682 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
2683 | goto do_postmatch; | |
2684 | } | |
9b9e0be4 | 2685 | break; |
79072805 | 2686 | case '\024': /* ^T */ |
88e89b8a | 2687 | #ifdef BIG_TIME |
6b88bc9c | 2688 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2689 | #else |
38ab35f8 | 2690 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2691 | #endif |
79072805 | 2692 | break; |
e07ea26a NC |
2693 | case '\025': /* ^UTF8CACHE */ |
2694 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2695 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2696 | } | |
2697 | break; | |
fde18df1 | 2698 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2699 | if (*(mg->mg_ptr+1) == '\0') { |
2700 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2701 | i = SvIV(sv); |
ac27b0f5 | 2702 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2703 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2704 | } |
599cee73 | 2705 | } |
0a378802 | 2706 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2707 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
7e4f0450 FC |
2708 | if (!SvPOK(sv)) { |
2709 | PL_compiling.cop_warnings = pWARN_STD; | |
d775746e GS |
2710 | break; |
2711 | } | |
f4fc7782 | 2712 | { |
b5477537 | 2713 | STRLEN len, i; |
d3a7d8c7 | 2714 | int accumulate = 0 ; |
f4fc7782 | 2715 | int any_fatals = 0 ; |
b83604b4 | 2716 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2717 | for (i = 0 ; i < len ; ++i) { |
2718 | accumulate |= ptr[i] ; | |
2719 | any_fatals |= (ptr[i] & 0xAA) ; | |
2720 | } | |
4243c432 NC |
2721 | if (!accumulate) { |
2722 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2723 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2724 | PL_compiling.cop_warnings = pWARN_NONE; | |
2725 | } | |
72dc9ed5 NC |
2726 | /* Yuck. I can't see how to abstract this: */ |
2727 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2728 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2729 | if (!specialWARN(PL_compiling.cop_warnings)) |
2730 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2731 | PL_compiling.cop_warnings = pWARN_ALL; |
2732 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2733 | } |
d3a7d8c7 | 2734 | else { |
72dc9ed5 NC |
2735 | STRLEN len; |
2736 | const char *const p = SvPV_const(sv, len); | |
2737 | ||
2738 | PL_compiling.cop_warnings | |
8ee4cf24 | 2739 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2740 | p, len); |
2741 | ||
d3a7d8c7 GS |
2742 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2743 | PL_dowarn |= G_WARN_ONCE ; | |
2744 | } | |
f4fc7782 | 2745 | |
d3a7d8c7 | 2746 | } |
4438c4b7 | 2747 | } |
971a9dd3 | 2748 | } |
79072805 LW |
2749 | break; |
2750 | case '.': | |
3280af22 NIS |
2751 | if (PL_localizing) { |
2752 | if (PL_localizing == 1) | |
7766f137 | 2753 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2754 | } |
3280af22 | 2755 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2756 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2757 | break; |
2758 | case '^': | |
acbe1b9d FC |
2759 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2760 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2761 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2762 | break; |
2763 | case '~': | |
acbe1b9d FC |
2764 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2765 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2766 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2767 | break; |
2768 | case '=': | |
acbe1b9d | 2769 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2770 | break; |
2771 | case '-': | |
acbe1b9d FC |
2772 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
2773 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
099be4f1 | 2774 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 LW |
2775 | break; |
2776 | case '%': | |
acbe1b9d | 2777 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2778 | break; |
2779 | case '|': | |
4b65379b | 2780 | { |
099be4f1 | 2781 | IO * const io = GvIO(PL_defoutgv); |
720f287d AB |
2782 | if(!io) |
2783 | break; | |
38ab35f8 | 2784 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2785 | IoFLAGS(io) &= ~IOf_FLUSH; |
2786 | else { | |
2787 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2788 | PerlIO *ofp = IoOFP(io); | |
2789 | if (ofp) | |
2790 | (void)PerlIO_flush(ofp); | |
2791 | IoFLAGS(io) |= IOf_FLUSH; | |
2792 | } | |
2793 | } | |
79072805 LW |
2794 | } |
2795 | break; | |
79072805 | 2796 | case '/': |
3280af22 | 2797 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2798 | PL_rs = newSVsv(sv); |
79072805 LW |
2799 | break; |
2800 | case '\\': | |
ef8d46e8 | 2801 | SvREFCNT_dec(PL_ors_sv); |
6bc2995b | 2802 | if (SvOK(sv)) { |
7889fe52 | 2803 | PL_ors_sv = newSVsv(sv); |
009c130f | 2804 | } |
e3c19b7b | 2805 | else { |
a0714e2c | 2806 | PL_ors_sv = NULL; |
e3c19b7b | 2807 | } |
79072805 | 2808 | break; |
7d69d4a6 FC |
2809 | case '[': |
2810 | if (SvIV(sv) != 0) | |
2811 | Perl_croak(aTHX_ "Assigning non-zero to $[ is no longer possible"); | |
2812 | break; | |
79072805 | 2813 | case '?': |
ff0cee69 | 2814 | #ifdef COMPLEX_STATUS |
6b88bc9c | 2815 | if (PL_localizing == 2) { |
41cb7b2b | 2816 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
2817 | PL_statusvalue = LvTARGOFF(sv); |
2818 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2819 | } |
2820 | else | |
2821 | #endif | |
2822 | #ifdef VMSISH_STATUS | |
2823 | if (VMSISH_STATUS) | |
fb38d079 | 2824 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2825 | else |
2826 | #endif | |
38ab35f8 | 2827 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2828 | break; |
2829 | case '!': | |
93189314 JH |
2830 | { |
2831 | #ifdef VMS | |
2832 | # define PERL_VMS_BANG vaxc$errno | |
2833 | #else | |
2834 | # define PERL_VMS_BANG 0 | |
2835 | #endif | |
91487cfc | 2836 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2837 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2838 | } | |
79072805 LW |
2839 | break; |
2840 | case '<': | |
985213f2 AB |
2841 | { |
2842 | const IV new_uid = SvIV(sv); | |
2843 | PL_delaymagic_uid = new_uid; | |
3280af22 NIS |
2844 | if (PL_delaymagic) { |
2845 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2846 | break; /* don't do magic till later */ |
2847 | } | |
2848 | #ifdef HAS_SETRUID | |
985213f2 | 2849 | (void)setruid((Uid_t)new_uid); |
79072805 LW |
2850 | #else |
2851 | #ifdef HAS_SETREUID | |
985213f2 | 2852 | (void)setreuid((Uid_t)new_uid, (Uid_t)-1); |
748a9306 | 2853 | #else |
85e6fe83 | 2854 | #ifdef HAS_SETRESUID |
985213f2 | 2855 | (void)setresuid((Uid_t)new_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2856 | #else |
985213f2 | 2857 | if (new_uid == PerlProc_geteuid()) { /* special case $< = $> */ |
75870ed3 | 2858 | #ifdef PERL_DARWIN |
2859 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
985213f2 | 2860 | if (new_uid != 0 && PerlProc_getuid() == 0) |
75870ed3 | 2861 | (void)PerlProc_setuid(0); |
2862 | #endif | |
985213f2 | 2863 | (void)PerlProc_setuid(new_uid); |
75870ed3 | 2864 | } else { |
cea2e8a9 | 2865 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2866 | } |
79072805 LW |
2867 | #endif |
2868 | #endif | |
85e6fe83 | 2869 | #endif |
79072805 | 2870 | break; |
985213f2 | 2871 | } |
79072805 | 2872 | case '>': |
985213f2 AB |
2873 | { |
2874 | const UV new_euid = SvIV(sv); | |
2875 | PL_delaymagic_euid = new_euid; | |
3280af22 NIS |
2876 | if (PL_delaymagic) { |
2877 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2878 | break; /* don't do magic till later */ |
2879 | } | |
2880 | #ifdef HAS_SETEUID | |
985213f2 | 2881 | (void)seteuid((Uid_t)new_euid); |
79072805 LW |
2882 | #else |
2883 | #ifdef HAS_SETREUID | |
985213f2 | 2884 | (void)setreuid((Uid_t)-1, (Uid_t)new_euid); |
85e6fe83 LW |
2885 | #else |
2886 | #ifdef HAS_SETRESUID | |
985213f2 | 2887 | (void)setresuid((Uid_t)-1, (Uid_t)new_euid, (Uid_t)-1); |
79072805 | 2888 | #else |
985213f2 | 2889 | if (new_euid == PerlProc_getuid()) /* special case $> = $< */ |
382669a9 | 2890 | PerlProc_setuid(new_euid); |
a0d0e21e | 2891 | else { |
cea2e8a9 | 2892 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2893 | } |
79072805 LW |
2894 | #endif |
2895 | #endif | |
85e6fe83 | 2896 | #endif |
79072805 | 2897 | break; |
985213f2 | 2898 | } |
79072805 | 2899 | case '(': |
985213f2 AB |
2900 | { |
2901 | const UV new_gid = SvIV(sv); | |
2902 | PL_delaymagic_gid = new_gid; | |
3280af22 NIS |
2903 | if (PL_delaymagic) { |
2904 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2905 | break; /* don't do magic till later */ |
2906 | } | |
2907 | #ifdef HAS_SETRGID | |
985213f2 | 2908 | (void)setrgid((Gid_t)new_gid); |
79072805 LW |
2909 | #else |
2910 | #ifdef HAS_SETREGID | |
985213f2 | 2911 | (void)setregid((Gid_t)new_gid, (Gid_t)-1); |
85e6fe83 LW |
2912 | #else |
2913 | #ifdef HAS_SETRESGID | |
985213f2 | 2914 | (void)setresgid((Gid_t)new_gid, (Gid_t)-1, (Gid_t) -1); |
79072805 | 2915 | #else |
985213f2 AB |
2916 | if (new_gid == PerlProc_getegid()) /* special case $( = $) */ |
2917 | (void)PerlProc_setgid(new_gid); | |
748a9306 | 2918 | else { |
cea2e8a9 | 2919 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2920 | } |
79072805 LW |
2921 | #endif |
2922 | #endif | |
85e6fe83 | 2923 | #endif |
79072805 | 2924 | break; |
985213f2 | 2925 | } |
79072805 | 2926 | case ')': |
985213f2 AB |
2927 | { |
2928 | UV new_egid; | |
5cd24f17 | 2929 | #ifdef HAS_SETGROUPS |
2930 | { | |
b83604b4 | 2931 | const char *p = SvPV_const(sv, len); |
757f63d8 | 2932 | Groups_t *gary = NULL; |
fb4089e0 | 2933 | #ifdef _SC_NGROUPS_MAX |
2934 | int maxgrp = sysconf(_SC_NGROUPS_MAX); | |
2935 | ||
2936 | if (maxgrp < 0) | |
2937 | maxgrp = NGROUPS; | |
2938 | #else | |
2939 | int maxgrp = NGROUPS; | |
2940 | #endif | |
757f63d8 SP |
2941 | |
2942 | while (isSPACE(*p)) | |
2943 | ++p; | |
985213f2 | 2944 | new_egid = Atol(p); |
fb4089e0 | 2945 | for (i = 0; i < maxgrp; ++i) { |
757f63d8 SP |
2946 | while (*p && !isSPACE(*p)) |
2947 | ++p; | |
2948 | while (isSPACE(*p)) | |
2949 | ++p; | |
2950 | if (!*p) | |
2951 | break; | |
2952 | if(!gary) | |
2953 | Newx(gary, i + 1, Groups_t); | |
2954 | else | |
2955 | Renew(gary, i + 1, Groups_t); | |
2956 | gary[i] = Atol(p); | |
2957 | } | |
2958 | if (i) | |
2959 | (void)setgroups(i, gary); | |
f5a63d97 | 2960 | Safefree(gary); |
5cd24f17 | 2961 | } |
2962 | #else /* HAS_SETGROUPS */ | |
985213f2 | 2963 | new_egid = SvIV(sv); |
5cd24f17 | 2964 | #endif /* HAS_SETGROUPS */ |
985213f2 | 2965 | PL_delaymagic_egid = new_egid; |
3280af22 NIS |
2966 | if (PL_delaymagic) { |
2967 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2968 | break; /* don't do magic till later */ |
2969 | } | |
2970 | #ifdef HAS_SETEGID | |
985213f2 | 2971 | (void)setegid((Gid_t)new_egid); |
79072805 LW |
2972 | #else |
2973 | #ifdef HAS_SETREGID | |
985213f2 | 2974 | (void)setregid((Gid_t)-1, (Gid_t)new_egid); |
85e6fe83 LW |
2975 | #else |
2976 | #ifdef HAS_SETRESGID | |
985213f2 | 2977 | (void)setresgid((Gid_t)-1, (Gid_t)new_egid, (Gid_t)-1); |
79072805 | 2978 | #else |
985213f2 AB |
2979 | if (new_egid == PerlProc_getgid()) /* special case $) = $( */ |
2980 | (void)PerlProc_setgid(new_egid); | |
748a9306 | 2981 | else { |
cea2e8a9 | 2982 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2983 | } |
79072805 LW |
2984 | #endif |
2985 | #endif | |
85e6fe83 | 2986 | #endif |
79072805 | 2987 | break; |
985213f2 | 2988 | } |
79072805 | 2989 | case ':': |
2d8e6c8d | 2990 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2991 | break; |
9cdac2a2 FC |
2992 | case '$': /* $$ */ |
2993 | /* Store the pid in mg->mg_obj so we can tell when a fork has | |
2994 | occurred. mg->mg_obj points to *$ by default, so clear it. */ | |
2995 | if (isGV(mg->mg_obj)) { | |
2996 | if (mg->mg_flags & MGf_REFCOUNTED) /* probably never true */ | |
2997 | SvREFCNT_dec(mg->mg_obj); | |
2998 | mg->mg_flags |= MGf_REFCOUNTED; | |
2999 | mg->mg_obj = newSViv((IV)PerlProc_getpid()); | |
3000 | } | |
3001 | else sv_setiv(mg->mg_obj, (IV)PerlProc_getpid()); | |
3002 | break; | |
79072805 | 3003 | case '0': |
e2975953 | 3004 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
3005 | #ifdef HAS_SETPROCTITLE |
3006 | /* The BSDs don't show the argv[] in ps(1) output, they | |
3007 | * show a string from the process struct and provide | |
3008 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 3009 | if (PL_origalen != 1) { |
b83604b4 | 3010 | s = SvPV_const(sv, len); |
98b76f99 | 3011 | # if __FreeBSD_version > 410001 |
9aad2c0e | 3012 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
3013 | * but not the "(perl) suffix from the ps(1) |
3014 | * output, because that's what ps(1) shows if the | |
3015 | * argv[] is modified. */ | |
6f2ad931 | 3016 | setproctitle("-%s", s); |
9aad2c0e | 3017 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
3018 | /* This doesn't really work if you assume that |
3019 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
3020 | * because in ps(1) output the result will be like | |
3021 | * sprintf("perl: %s (perl)", s) | |
3022 | * I guess this is a security feature: | |
3023 | * one (a user process) cannot get rid of the original name. | |
3024 | * --jhi */ | |
3025 | setproctitle("%s", s); | |
3026 | # endif | |
3027 | } | |
9d3968b2 | 3028 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 3029 | if (PL_origalen != 1) { |
17aa7f3d | 3030 | union pstun un; |
b83604b4 | 3031 | s = SvPV_const(sv, len); |
6867be6d | 3032 | un.pst_command = (char *)s; |
17aa7f3d JH |
3033 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
3034 | } | |
9d3968b2 | 3035 | #else |
2d2af554 GA |
3036 | if (PL_origalen > 1) { |
3037 | /* PL_origalen is set in perl_parse(). */ | |
3038 | s = SvPV_force(sv,len); | |
3039 | if (len >= (STRLEN)PL_origalen-1) { | |
3040 | /* Longer than original, will be truncated. We assume that | |
3041 | * PL_origalen bytes are available. */ | |
3042 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
3043 | } | |
3044 | else { | |
3045 | /* Shorter than original, will be padded. */ | |
235ac35d | 3046 | #ifdef PERL_DARWIN |
60777a0d JH |
3047 | /* Special case for Mac OS X: see [perl #38868] */ |
3048 | const int pad = 0; | |
235ac35d | 3049 | #else |
8a89a4f1 MB |
3050 | /* Is the space counterintuitive? Yes. |
3051 | * (You were expecting \0?) | |
3052 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
3053 | * --jhi */ | |
60777a0d | 3054 | const int pad = ' '; |
235ac35d | 3055 | #endif |
60777a0d JH |
3056 | Copy(s, PL_origargv[0], len, char); |
3057 | PL_origargv[0][len] = 0; | |
3058 | memset(PL_origargv[0] + len + 1, | |
3059 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
3060 | } |
3061 | PL_origargv[0][PL_origalen-1] = 0; | |
3062 | for (i = 1; i < PL_origargc; i++) | |
3063 | PL_origargv[i] = 0; | |
7636ea95 AB |
3064 | #ifdef HAS_PRCTL_SET_NAME |
3065 | /* Set the legacy process name in addition to the POSIX name on Linux */ | |
3066 | if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) { | |
3067 | /* diag_listed_as: SKIPME */ | |
3068 | Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno)); | |
3069 | } | |
3070 | #endif | |
79072805 | 3071 | } |
9d3968b2 | 3072 | #endif |
e2975953 | 3073 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 LW |
3074 | break; |
3075 | } | |
3076 | return 0; | |
3077 | } | |
3078 | ||
3079 | I32 | |
84c7b88c BF |
3080 | Perl_whichsig_sv(pTHX_ SV *sigsv) |
3081 | { | |
3082 | const char *sigpv; | |
3083 | STRLEN siglen; | |
3084 | PERL_ARGS_ASSERT_WHICHSIG_SV; | |
3085 | PERL_UNUSED_CONTEXT; | |
3086 | sigpv = SvPV_const(sigsv, siglen); | |
3087 | return whichsig_pvn(sigpv, siglen); | |
3088 | } | |
3089 | ||
3090 | I32 | |
3091 | Perl_whichsig_pv(pTHX_ const char *sig) | |
3092 | { | |
3093 | PERL_ARGS_ASSERT_WHICHSIG_PV; | |
3094 | PERL_UNUSED_CONTEXT; | |
3095 | return whichsig_pvn(sig, strlen(sig)); | |
3096 | } | |
3097 | ||
3098 | I32 | |
3099 | Perl_whichsig_pvn(pTHX_ const char *sig, STRLEN len) | |
79072805 | 3100 | { |
eb578fdb | 3101 | char* const* sigv; |
7918f24d | 3102 | |
84c7b88c | 3103 | PERL_ARGS_ASSERT_WHICHSIG_PVN; |
96a5add6 | 3104 | PERL_UNUSED_CONTEXT; |
79072805 | 3105 | |
aadb217d | 3106 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
84c7b88c | 3107 | if (strlen(*sigv) == len && memEQ(sig,*sigv, len)) |
aadb217d | 3108 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 | 3109 | #ifdef SIGCLD |
84c7b88c | 3110 | if (memEQs(sig, len, "CHLD")) |
79072805 LW |
3111 | return SIGCLD; |
3112 | #endif | |
3113 | #ifdef SIGCHLD | |
84c7b88c | 3114 | if (memEQs(sig, len, "CLD")) |
79072805 LW |
3115 | return SIGCHLD; |
3116 | #endif | |
7f1236c0 | 3117 | return -1; |
79072805 LW |
3118 | } |
3119 | ||
ecfc5424 | 3120 | Signal_t |
1e82f5a6 | 3121 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3122 | Perl_sighandler(int sig, siginfo_t *sip, void *uap) |
1e82f5a6 SH |
3123 | #else |
3124 | Perl_sighandler(int sig) | |
3125 | #endif | |
79072805 | 3126 | { |
1018e26f NIS |
3127 | #ifdef PERL_GET_SIG_CONTEXT |
3128 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 3129 | #else |
cea2e8a9 | 3130 | dTHX; |
71d280e3 | 3131 | #endif |
79072805 | 3132 | dSP; |
a0714e2c SS |
3133 | GV *gv = NULL; |
3134 | SV *sv = NULL; | |
8772537c | 3135 | SV * const tSv = PL_Sv; |
601f1833 | 3136 | CV *cv = NULL; |
533c011a | 3137 | OP *myop = PL_op; |
84902520 | 3138 | U32 flags = 0; |
8772537c | 3139 | XPV * const tXpv = PL_Xpv; |
0c4d3b5e | 3140 | I32 old_ss_ix = PL_savestack_ix; |
100c03aa | 3141 | SV *errsv_save = NULL; |
71d280e3 | 3142 | |
84902520 | 3143 | |
727405f8 | 3144 | if (!PL_psig_ptr[sig]) { |
99ef548b | 3145 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
3146 | PL_sig_name[sig]); |
3147 | exit(sig); | |
3148 | } | |
ff0cee69 | 3149 | |
a0d63a7b DM |
3150 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3151 | /* Max number of items pushed there is 3*n or 4. We cannot fix | |
3152 | infinity, so we fix 4 (in fact 5): */ | |
3153 | if (PL_savestack_ix + 15 <= PL_savestack_max) { | |
3154 | flags |= 1; | |
3155 | PL_savestack_ix += 5; /* Protect save in progress. */ | |
3156 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, NULL); | |
3157 | } | |
84902520 | 3158 | } |
84902520 | 3159 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ea726b52 | 3160 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig]))) |
8772537c AL |
3161 | || SvTYPE(cv) != SVt_PVCV) { |
3162 | HV *st; | |
f2c0649b | 3163 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 3164 | } |
84902520 | 3165 | |
a0d0e21e | 3166 | if (!cv || !CvROOT(cv)) { |
a2a5de95 NC |
3167 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
3168 | PL_sig_name[sig], (gv ? GvENAME(gv) | |
3169 | : ((cv && CvGV(cv)) | |
3170 | ? GvENAME(CvGV(cv)) | |
3171 | : "__ANON__"))); | |
00d579c5 | 3172 | goto cleanup; |
79072805 LW |
3173 | } |
3174 | ||
0c4d3b5e DM |
3175 | sv = PL_psig_name[sig] |
3176 | ? SvREFCNT_inc_NN(PL_psig_name[sig]) | |
3177 | : newSVpv(PL_sig_name[sig],0); | |
72048cfe | 3178 | flags |= 8; |
0c4d3b5e DM |
3179 | SAVEFREESV(sv); |
3180 | ||
a0d63a7b DM |
3181 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3182 | /* make sure our assumption about the size of the SAVEs are correct: | |
3183 | * 3 for SAVEDESTRUCTOR_X, 2 for SAVEFREESV */ | |
3184 | assert(old_ss_ix + 2 + ((flags & 1) ? 3+5 : 0) == PL_savestack_ix); | |
3185 | } | |
e336de0d | 3186 | |
e788e7d3 | 3187 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 3188 | PUSHMARK(SP); |
79072805 | 3189 | PUSHs(sv); |
8aad04aa JH |
3190 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
3191 | { | |
3192 | struct sigaction oact; | |
3193 | ||
3194 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
3195 | if (sip) { |
3196 | HV *sih = newHV(); | |
ad64d0ec | 3197 | SV *rv = newRV_noinc(MUTABLE_SV(sih)); |
8aad04aa JH |
3198 | /* The siginfo fields signo, code, errno, pid, uid, |
3199 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
3200 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
3201 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 3202 | #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 |
3203 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
3204 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
3205 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
3206 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
3207 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
3208 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 3209 | #endif |
8aad04aa | 3210 | EXTEND(SP, 2); |
ad64d0ec | 3211 | PUSHs(rv); |
22f1178f | 3212 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 3213 | } |
b4552a27 | 3214 | |
8aad04aa JH |
3215 | } |
3216 | } | |
3217 | #endif | |
79072805 | 3218 | PUTBACK; |
a0d0e21e | 3219 | |
100c03aa JL |
3220 | errsv_save = newSVsv(ERRSV); |
3221 | ||
ad64d0ec | 3222 | call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL); |
79072805 | 3223 | |
d3acc0f7 | 3224 | POPSTACK; |
1b266415 | 3225 | if (SvTRUE(ERRSV)) { |
100c03aa | 3226 | SvREFCNT_dec(errsv_save); |
c22d665b | 3227 | #ifndef PERL_MICRO |
1b266415 NIS |
3228 | /* Handler "died", for example to get out of a restart-able read(). |
3229 | * Before we re-do that on its behalf re-enable the signal which was | |
3230 | * blocked by the system when we entered. | |
3231 | */ | |
c22d665b | 3232 | #ifdef HAS_SIGPROCMASK |
d488af49 | 3233 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3234 | if (sip || uap) |
c22d665b LT |
3235 | #endif |
3236 | { | |
3237 | sigset_t set; | |
3238 | sigemptyset(&set); | |
3239 | sigaddset(&set,sig); | |
3240 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
3241 | } | |
3242 | #else | |
1b266415 NIS |
3243 | /* Not clear if this will work */ |
3244 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 3245 | (void)rsignal(sig, PL_csighandlerp); |
c22d665b LT |
3246 | #endif |
3247 | #endif /* !PERL_MICRO */ | |
c5df3096 | 3248 | die_sv(ERRSV); |
1b266415 | 3249 | } |
100c03aa JL |
3250 | else { |
3251 | sv_setsv(ERRSV, errsv_save); | |
3252 | SvREFCNT_dec(errsv_save); | |
3253 | } | |
3254 | ||
00d579c5 | 3255 | cleanup: |
0c4d3b5e DM |
3256 | /* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */ |
3257 | PL_savestack_ix = old_ss_ix; | |
72048cfe | 3258 | if (flags & 8) |
84902520 | 3259 | SvREFCNT_dec(sv); |
533c011a | 3260 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 3261 | |
3280af22 NIS |
3262 | PL_Sv = tSv; /* Restore global temporaries. */ |
3263 | PL_Xpv = tXpv; | |
53bb94e2 | 3264 | return; |
79072805 | 3265 | } |
4e35701f NIS |
3266 | |
3267 | ||
51371543 | 3268 | static void |
8772537c | 3269 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3270 | { |
97aff369 | 3271 | dVAR; |
8772537c AL |
3272 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3273 | SV* const sv = mgs->mgs_sv; | |
150b625d | 3274 | bool bumped; |
51371543 GS |
3275 | |
3276 | if (!sv) | |
3277 | return; | |
3278 | ||
4bac9ae4 CS |
3279 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
3280 | SvTEMP_off(sv); /* if it's still magical, this value isn't temporary */ | |
f8c7b90f | 3281 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3282 | /* While magic was saved (and off) sv_setsv may well have seen |
3283 | this SV as a prime candidate for COW. */ | |
3284 | if (SvIsCOW(sv)) | |
e424a81e | 3285 | sv_force_normal_flags(sv, 0); |
f9701176 | 3286 | #endif |
f9c6fee5 CS |
3287 | if (mgs->mgs_readonly) |
3288 | SvREADONLY_on(sv); | |
3289 | if (mgs->mgs_magical) | |
3290 | SvFLAGS(sv) |= mgs->mgs_magical; | |
51371543 GS |
3291 | else |
3292 | mg_magical(sv); | |
51371543 GS |
3293 | } |
3294 | ||
150b625d | 3295 | bumped = mgs->mgs_bumped; |
51371543 GS |
3296 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
3297 | ||
3298 | /* If we're still on top of the stack, pop us off. (That condition | |
3299 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3300 | * if it's being called via leave_scope.) | |
3301 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3302 | * may leave alloc gunk on the savestack, and some code | |
3303 | * (e.g. sighandler) doesn't expect that... | |
3304 | */ | |
3305 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3306 | { | |
1be36ce0 NC |
3307 | UV popval = SSPOPUV; |
3308 | assert(popval == SAVEt_DESTRUCTOR_X); | |
51371543 | 3309 | PL_savestack_ix -= 2; |
1be36ce0 NC |
3310 | popval = SSPOPUV; |
3311 | assert((popval & SAVE_MASK) == SAVEt_ALLOC); | |
3312 | PL_savestack_ix -= popval >> SAVE_TIGHT_SHIFT; | |
51371543 | 3313 | } |
150b625d DM |
3314 | if (bumped) { |
3315 | if (SvREFCNT(sv) == 1) { | |
3316 | /* We hold the last reference to this SV, which implies that the | |
3317 | SV was deleted as a side effect of the routines we called. | |
3318 | So artificially keep it alive a bit longer. | |
3319 | We avoid turning on the TEMP flag, which can cause the SV's | |
3320 | buffer to get stolen (and maybe other stuff). */ | |
150b625d | 3321 | sv_2mortal(sv); |
4bac9ae4 | 3322 | SvTEMP_off(sv); |
8985fe98 | 3323 | } |
150b625d DM |
3324 | else |
3325 | SvREFCNT_dec(sv); /* undo the inc in S_save_magic() */ | |
8985fe98 | 3326 | } |
51371543 GS |
3327 | } |
3328 | ||
0c4d3b5e DM |
3329 | /* clean up the mess created by Perl_sighandler(). |
3330 | * Note that this is only called during an exit in a signal handler; | |
3331 | * a die is trapped by the call_sv() and the SAVEDESTRUCTOR_X manually | |
9a7f166c | 3332 | * skipped over. */ |
0c4d3b5e | 3333 | |
51371543 | 3334 | static void |
8772537c | 3335 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3336 | { |
27da23d5 | 3337 | dVAR; |
0c4d3b5e | 3338 | PERL_UNUSED_ARG(p); |
7918f24d | 3339 | |
0c4d3b5e | 3340 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
51371543 | 3341 | } |
1018e26f | 3342 | |
66610fdd | 3343 | /* |
b3ca2e83 NC |
3344 | =for apidoc magic_sethint |
3345 | ||
3346 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3347 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3348 | anything that would need a deep copy. Maybe we should warn if we find a | |
3349 | reference. | |
b3ca2e83 NC |
3350 | |
3351 | =cut | |
3352 | */ | |
3353 | int | |
3354 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3355 | { | |
3356 | dVAR; | |
ad64d0ec | 3357 | SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr) |
59cd0e26 | 3358 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3359 | |
7918f24d NC |
3360 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3361 | ||
e6e3e454 NC |
3362 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3363 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3364 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3365 | or take other more complex action. */ | |
3366 | ||
5b9c0671 NC |
3367 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3368 | Doing this here saves a lot of doing it manually in perl code (and | |
3369 | forgetting to do it, and consequent subtle errors. */ | |
3370 | PL_hints |= HINT_LOCALIZE_HH; | |
20439bc7 Z |
3371 | CopHINTHASH_set(&PL_compiling, |
3372 | cophh_store_sv(CopHINTHASH_get(&PL_compiling), key, 0, sv, 0)); | |
b3ca2e83 NC |
3373 | return 0; |
3374 | } | |
3375 | ||
3376 | /* | |
f175cff5 | 3377 | =for apidoc magic_clearhint |
b3ca2e83 | 3378 | |
c28fe1ec NC |
3379 | Triggered by a delete from %^H, records the key to |
3380 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3381 | |
3382 | =cut | |
3383 | */ | |
3384 | int | |
3385 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3386 | { | |
3387 | dVAR; | |
7918f24d NC |
3388 | |
3389 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; | |
f5a63d97 AL |
3390 | PERL_UNUSED_ARG(sv); |
3391 | ||
5b9c0671 | 3392 | PL_hints |= HINT_LOCALIZE_HH; |
20439bc7 | 3393 | CopHINTHASH_set(&PL_compiling, |
e3352591 FC |
3394 | mg->mg_len == HEf_SVKEY |
3395 | ? cophh_delete_sv(CopHINTHASH_get(&PL_compiling), | |
3396 | MUTABLE_SV(mg->mg_ptr), 0, 0) | |
3397 | : cophh_delete_pvn(CopHINTHASH_get(&PL_compiling), | |
3398 | mg->mg_ptr, mg->mg_len, 0, 0)); | |
b3ca2e83 NC |
3399 | return 0; |
3400 | } | |
3401 | ||
3402 | /* | |
f747ebd6 Z |
3403 | =for apidoc magic_clearhints |
3404 | ||
3405 | Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>. | |
3406 | ||
3407 | =cut | |
3408 | */ | |
3409 | int | |
3410 | Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg) | |
3411 | { | |
3412 | PERL_ARGS_ASSERT_MAGIC_CLEARHINTS; | |
3413 | PERL_UNUSED_ARG(sv); | |
3414 | PERL_UNUSED_ARG(mg); | |
20439bc7 Z |
3415 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
3416 | CopHINTHASH_set(&PL_compiling, cophh_new_empty()); | |
f747ebd6 Z |
3417 | return 0; |
3418 | } | |
3419 | ||
09fb282d FC |
3420 | int |
3421 | Perl_magic_copycallchecker(pTHX_ SV *sv, MAGIC *mg, SV *nsv, | |
3422 | const char *name, I32 namlen) | |
3423 | { | |
3424 | MAGIC *nmg; | |
3425 | ||
3426 | PERL_ARGS_ASSERT_MAGIC_COPYCALLCHECKER; | |
4f8dbb2d | 3427 | PERL_UNUSED_ARG(sv); |
09fb282d FC |
3428 | PERL_UNUSED_ARG(name); |
3429 | PERL_UNUSED_ARG(namlen); | |
3430 | ||
3431 | sv_magic(nsv, &PL_sv_undef, mg->mg_type, NULL, 0); | |
3432 | nmg = mg_find(nsv, mg->mg_type); | |
3433 | if (nmg->mg_flags & MGf_REFCOUNTED) SvREFCNT_dec(nmg->mg_obj); | |
3434 | nmg->mg_ptr = mg->mg_ptr; | |
3435 | nmg->mg_obj = SvREFCNT_inc_simple(mg->mg_obj); | |
3436 | nmg->mg_flags |= MGf_REFCOUNTED; | |
3437 | return 1; | |
3438 | } | |
3439 | ||
f747ebd6 | 3440 | /* |
66610fdd RGS |
3441 | * Local variables: |
3442 | * c-indentation-style: bsd | |
3443 | * c-basic-offset: 4 | |
14d04a33 | 3444 | * indent-tabs-mode: nil |
66610fdd RGS |
3445 | * End: |
3446 | * | |
14d04a33 | 3447 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3448 | */ |