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 | } |
ff76feab | 216 | |
f9c6fee5 | 217 | mg = nextmg; |
ff76feab | 218 | |
0723351e | 219 | if (have_new) { |
ff76feab AMS |
220 | /* Have we finished with the new entries we saw? Start again |
221 | where we left off (unless there are more new entries). */ | |
222 | if (mg == head) { | |
0723351e | 223 | have_new = 0; |
ff76feab AMS |
224 | mg = cur; |
225 | head = newmg; | |
226 | } | |
227 | } | |
228 | ||
229 | /* Were any new entries added? */ | |
0723351e NC |
230 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
231 | have_new = 1; | |
ff76feab AMS |
232 | cur = mg; |
233 | mg = newmg; | |
f9c6fee5 | 234 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ |
760ac839 | 235 | } |
79072805 | 236 | } |
463ee0b2 | 237 | |
a9844598 CS |
238 | if (saved) |
239 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); | |
240 | ||
79072805 LW |
241 | return 0; |
242 | } | |
243 | ||
954c1994 GS |
244 | /* |
245 | =for apidoc mg_set | |
246 | ||
247 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
248 | ||
249 | =cut | |
250 | */ | |
251 | ||
79072805 | 252 | int |
864dbfa3 | 253 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 254 | { |
97aff369 | 255 | dVAR; |
35a4481c | 256 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 257 | MAGIC* mg; |
463ee0b2 LW |
258 | MAGIC* nextmg; |
259 | ||
7918f24d NC |
260 | PERL_ARGS_ASSERT_MG_SET; |
261 | ||
b5ed8c44 FC |
262 | if (PL_localizing == 2 && sv == DEFSV) return 0; |
263 | ||
455ece5e | 264 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
265 | |
266 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 267 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 268 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
269 | if (mg->mg_flags & MGf_GSKIP) { |
270 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
f9c6fee5 | 271 | (SSPTR(mgs_ix, MGS*))->mgs_magical = 0; |
a0d0e21e | 272 | } |
e0a73de4 | 273 | if (PL_localizing == 2 |
b5ed8c44 | 274 | && PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
e7cbf6c6 | 275 | continue; |
2b260de0 | 276 | if (vtbl && vtbl->svt_set) |
16c91539 | 277 | vtbl->svt_set(aTHX_ sv, mg); |
79072805 | 278 | } |
463ee0b2 | 279 | |
8772537c | 280 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
281 | return 0; |
282 | } | |
283 | ||
954c1994 GS |
284 | /* |
285 | =for apidoc mg_length | |
286 | ||
287 | Report on the SV's length. See C<sv_magic>. | |
288 | ||
289 | =cut | |
290 | */ | |
291 | ||
79072805 | 292 | U32 |
864dbfa3 | 293 | Perl_mg_length(pTHX_ SV *sv) |
79072805 | 294 | { |
97aff369 | 295 | dVAR; |
79072805 | 296 | MAGIC* mg; |
463ee0b2 | 297 | STRLEN len; |
463ee0b2 | 298 | |
7918f24d NC |
299 | PERL_ARGS_ASSERT_MG_LENGTH; |
300 | ||
79072805 | 301 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 302 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 303 | if (vtbl && vtbl->svt_len) { |
35a4481c | 304 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 305 | save_magic(mgs_ix, sv); |
a0d0e21e | 306 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 307 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 308 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
309 | return len; |
310 | } | |
311 | } | |
312 | ||
d0644529 NC |
313 | { |
314 | /* You can't know whether it's UTF-8 until you get the string again... | |
315 | */ | |
10516c54 | 316 | const U8 *s = (U8*)SvPV_const(sv, len); |
d0644529 NC |
317 | |
318 | if (DO_UTF8(sv)) { | |
319 | len = utf8_length(s, s + len); | |
320 | } | |
5636d518 | 321 | } |
463ee0b2 | 322 | return len; |
79072805 LW |
323 | } |
324 | ||
8fb26106 | 325 | I32 |
864dbfa3 | 326 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
327 | { |
328 | MAGIC* mg; | |
ac27b0f5 | 329 | |
7918f24d NC |
330 | PERL_ARGS_ASSERT_MG_SIZE; |
331 | ||
93965878 | 332 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 333 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 334 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
335 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
336 | I32 len; | |
455ece5e | 337 | save_magic(mgs_ix, sv); |
93965878 | 338 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 339 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 340 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
341 | return len; |
342 | } | |
343 | } | |
344 | ||
345 | switch(SvTYPE(sv)) { | |
346 | case SVt_PVAV: | |
502c6561 | 347 | return AvFILLp((const AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
348 | case SVt_PVHV: |
349 | /* FIXME */ | |
350 | default: | |
cea2e8a9 | 351 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
352 | break; |
353 | } | |
354 | return 0; | |
355 | } | |
356 | ||
954c1994 GS |
357 | /* |
358 | =for apidoc mg_clear | |
359 | ||
360 | Clear something magical that the SV represents. See C<sv_magic>. | |
361 | ||
362 | =cut | |
363 | */ | |
364 | ||
79072805 | 365 | int |
864dbfa3 | 366 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 367 | { |
35a4481c | 368 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 369 | MAGIC* mg; |
8ac77ac9 | 370 | MAGIC *nextmg; |
463ee0b2 | 371 | |
7918f24d NC |
372 | PERL_ARGS_ASSERT_MG_CLEAR; |
373 | ||
455ece5e | 374 | save_magic(mgs_ix, sv); |
463ee0b2 | 375 | |
8ac77ac9 | 376 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
35a4481c | 377 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 378 | /* omit GSKIP -- never set here */ |
727405f8 | 379 | |
8ac77ac9 NC |
380 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
381 | ||
2b260de0 | 382 | if (vtbl && vtbl->svt_clear) |
16c91539 | 383 | vtbl->svt_clear(aTHX_ sv, mg); |
79072805 | 384 | } |
463ee0b2 | 385 | |
8772537c | 386 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
387 | return 0; |
388 | } | |
389 | ||
ed624ca8 | 390 | static MAGIC* |
39de7f53 FR |
391 | S_mg_findext_flags(pTHX_ const SV *sv, int type, const MGVTBL *vtbl, U32 flags) |
392 | { | |
393 | PERL_UNUSED_CONTEXT; | |
394 | ||
395 | assert(flags <= 1); | |
396 | ||
397 | if (sv) { | |
398 | MAGIC *mg; | |
399 | ||
400 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
401 | if (mg->mg_type == type && (!flags || mg->mg_virtual == vtbl)) { | |
402 | return mg; | |
403 | } | |
404 | } | |
405 | } | |
406 | ||
407 | return NULL; | |
408 | } | |
409 | ||
954c1994 GS |
410 | /* |
411 | =for apidoc mg_find | |
412 | ||
413 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
414 | ||
415 | =cut | |
416 | */ | |
417 | ||
93a17b20 | 418 | MAGIC* |
35a4481c | 419 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 420 | { |
39de7f53 FR |
421 | return S_mg_findext_flags(aTHX_ sv, type, NULL, 0); |
422 | } | |
423 | ||
424 | /* | |
425 | =for apidoc mg_findext | |
426 | ||
427 | Finds the magic pointer of C<type> with the given C<vtbl> for the C<SV>. See | |
428 | C<sv_magicext>. | |
429 | ||
430 | =cut | |
431 | */ | |
432 | ||
433 | MAGIC* | |
434 | Perl_mg_findext(pTHX_ const SV *sv, int type, const MGVTBL *vtbl) | |
435 | { | |
436 | return S_mg_findext_flags(aTHX_ sv, type, vtbl, 1); | |
93a17b20 LW |
437 | } |
438 | ||
954c1994 GS |
439 | /* |
440 | =for apidoc mg_copy | |
441 | ||
442 | Copies the magic from one SV to another. See C<sv_magic>. | |
443 | ||
444 | =cut | |
445 | */ | |
446 | ||
79072805 | 447 | int |
864dbfa3 | 448 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 449 | { |
463ee0b2 | 450 | int count = 0; |
79072805 | 451 | MAGIC* mg; |
7918f24d NC |
452 | |
453 | PERL_ARGS_ASSERT_MG_COPY; | |
454 | ||
463ee0b2 | 455 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 456 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 | 457 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
16c91539 | 458 | count += vtbl->svt_copy(aTHX_ sv, mg, nsv, key, klen); |
68795e93 | 459 | } |
823a54a3 AL |
460 | else { |
461 | const char type = mg->mg_type; | |
1e73acc8 | 462 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
463 | sv_magic(nsv, |
464 | (type == PERL_MAGIC_tied) | |
465 | ? SvTIED_obj(sv, mg) | |
466 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
467 | ? sv | |
468 | : mg->mg_obj, | |
469 | toLOWER(type), key, klen); | |
470 | count++; | |
471 | } | |
79072805 | 472 | } |
79072805 | 473 | } |
463ee0b2 | 474 | return count; |
79072805 LW |
475 | } |
476 | ||
954c1994 | 477 | /* |
0cbee0a4 DM |
478 | =for apidoc mg_localize |
479 | ||
9711599e CS |
480 | Copy some of the magic from an existing SV to new localized version of that |
481 | SV. Container magic (eg %ENV, $1, tie) gets copied, value magic doesn't (eg | |
482 | taint, pos). | |
483 | ||
af7df257 | 484 | If setmagic is false then no set magic will be called on the new (empty) SV. |
9711599e CS |
485 | This typically means that assignment will soon follow (e.g. 'local $x = $y'), |
486 | and that will handle the magic. | |
0cbee0a4 DM |
487 | |
488 | =cut | |
489 | */ | |
490 | ||
491 | void | |
af7df257 | 492 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv, bool setmagic) |
0cbee0a4 | 493 | { |
97aff369 | 494 | dVAR; |
0cbee0a4 | 495 | MAGIC *mg; |
7918f24d NC |
496 | |
497 | PERL_ARGS_ASSERT_MG_LOCALIZE; | |
498 | ||
658a9f31 JD |
499 | if (nsv == DEFSV) |
500 | return; | |
501 | ||
0cbee0a4 | 502 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
2b1b43ea | 503 | const MGVTBL* const vtbl = mg->mg_virtual; |
e0a73de4 | 504 | if (PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
0cbee0a4 | 505 | continue; |
0cbee0a4 | 506 | |
a5063e7c | 507 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
16c91539 | 508 | (void)vtbl->svt_local(aTHX_ nsv, mg); |
a5063e7c | 509 | else |
0cbee0a4 DM |
510 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
511 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 512 | |
0cbee0a4 | 513 | /* container types should remain read-only across localization */ |
b2b95e4c | 514 | if (!SvIsCOW(sv)) SvFLAGS(nsv) |= SvREADONLY(sv); |
0cbee0a4 DM |
515 | } |
516 | ||
517 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
518 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
af7df257 | 519 | if (setmagic) { |
9711599e CS |
520 | PL_localizing = 1; |
521 | SvSETMAGIC(nsv); | |
522 | PL_localizing = 0; | |
523 | } | |
0cbee0a4 DM |
524 | } |
525 | } | |
526 | ||
d9088386 Z |
527 | #define mg_free_struct(sv, mg) S_mg_free_struct(aTHX_ sv, mg) |
528 | static void | |
529 | S_mg_free_struct(pTHX_ SV *sv, MAGIC *mg) | |
530 | { | |
531 | const MGVTBL* const vtbl = mg->mg_virtual; | |
532 | if (vtbl && vtbl->svt_free) | |
533 | vtbl->svt_free(aTHX_ sv, mg); | |
534 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { | |
535 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) | |
536 | Safefree(mg->mg_ptr); | |
537 | else if (mg->mg_len == HEf_SVKEY) | |
538 | SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr)); | |
539 | } | |
540 | if (mg->mg_flags & MGf_REFCOUNTED) | |
541 | SvREFCNT_dec(mg->mg_obj); | |
542 | Safefree(mg); | |
543 | } | |
544 | ||
0cbee0a4 | 545 | /* |
954c1994 GS |
546 | =for apidoc mg_free |
547 | ||
548 | Free any magic storage used by the SV. See C<sv_magic>. | |
549 | ||
550 | =cut | |
551 | */ | |
552 | ||
79072805 | 553 | int |
864dbfa3 | 554 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
555 | { |
556 | MAGIC* mg; | |
557 | MAGIC* moremagic; | |
7918f24d NC |
558 | |
559 | PERL_ARGS_ASSERT_MG_FREE; | |
560 | ||
79072805 | 561 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
79072805 | 562 | moremagic = mg->mg_moremagic; |
d9088386 | 563 | mg_free_struct(sv, mg); |
c826f41b | 564 | SvMAGIC_set(sv, moremagic); |
79072805 | 565 | } |
b162af07 | 566 | SvMAGIC_set(sv, NULL); |
68f8932e | 567 | SvMAGICAL_off(sv); |
79072805 LW |
568 | return 0; |
569 | } | |
570 | ||
d9088386 Z |
571 | /* |
572 | =for apidoc Am|void|mg_free_type|SV *sv|int how | |
573 | ||
574 | Remove any magic of type I<how> from the SV I<sv>. See L</sv_magic>. | |
575 | ||
576 | =cut | |
577 | */ | |
578 | ||
579 | void | |
580 | Perl_mg_free_type(pTHX_ SV *sv, int how) | |
581 | { | |
582 | MAGIC *mg, *prevmg, *moremg; | |
583 | PERL_ARGS_ASSERT_MG_FREE_TYPE; | |
584 | for (prevmg = NULL, mg = SvMAGIC(sv); mg; prevmg = mg, mg = moremg) { | |
585 | MAGIC *newhead; | |
586 | moremg = mg->mg_moremagic; | |
587 | if (mg->mg_type == how) { | |
588 | /* temporarily move to the head of the magic chain, in case | |
589 | custom free code relies on this historical aspect of mg_free */ | |
590 | if (prevmg) { | |
591 | prevmg->mg_moremagic = moremg; | |
592 | mg->mg_moremagic = SvMAGIC(sv); | |
593 | SvMAGIC_set(sv, mg); | |
594 | } | |
595 | newhead = mg->mg_moremagic; | |
596 | mg_free_struct(sv, mg); | |
597 | SvMAGIC_set(sv, newhead); | |
598 | mg = prevmg; | |
599 | } | |
600 | } | |
601 | mg_magical(sv); | |
602 | } | |
603 | ||
79072805 | 604 | #include <signal.h> |
79072805 | 605 | |
942e002e | 606 | U32 |
864dbfa3 | 607 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 608 | { |
97aff369 | 609 | dVAR; |
8772537c | 610 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 611 | |
7918f24d NC |
612 | PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT; |
613 | ||
0bd48802 | 614 | if (PL_curpm) { |
eb578fdb | 615 | const REGEXP * const rx = PM_GETRE(PL_curpm); |
0bd48802 | 616 | if (rx) { |
a678b0e4 YO |
617 | if (mg->mg_obj) { /* @+ */ |
618 | /* return the number possible */ | |
07bc277f | 619 | return RX_NPARENS(rx); |
a678b0e4 | 620 | } else { /* @- */ |
07bc277f | 621 | I32 paren = RX_LASTPAREN(rx); |
a678b0e4 YO |
622 | |
623 | /* return the last filled */ | |
f46c4081 | 624 | while ( paren >= 0 |
07bc277f NC |
625 | && (RX_OFFS(rx)[paren].start == -1 |
626 | || RX_OFFS(rx)[paren].end == -1) ) | |
f46c4081 | 627 | paren--; |
a678b0e4 YO |
628 | return (U32)paren; |
629 | } | |
0bd48802 | 630 | } |
8f580fb8 | 631 | } |
ac27b0f5 | 632 | |
942e002e | 633 | return (U32)-1; |
6cef1e77 IZ |
634 | } |
635 | ||
636 | int | |
864dbfa3 | 637 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 638 | { |
97aff369 | 639 | dVAR; |
7918f24d NC |
640 | |
641 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET; | |
642 | ||
0bd48802 | 643 | if (PL_curpm) { |
eb578fdb | 644 | const REGEXP * const rx = PM_GETRE(PL_curpm); |
0bd48802 | 645 | if (rx) { |
eb578fdb KW |
646 | const I32 paren = mg->mg_len; |
647 | I32 s; | |
648 | I32 t; | |
0bd48802 AL |
649 | if (paren < 0) |
650 | return 0; | |
07bc277f NC |
651 | if (paren <= (I32)RX_NPARENS(rx) && |
652 | (s = RX_OFFS(rx)[paren].start) != -1 && | |
653 | (t = RX_OFFS(rx)[paren].end) != -1) | |
0bd48802 | 654 | { |
eb578fdb | 655 | I32 i; |
0bd48802 AL |
656 | if (mg->mg_obj) /* @+ */ |
657 | i = t; | |
658 | else /* @- */ | |
659 | i = s; | |
660 | ||
661 | if (i > 0 && RX_MATCH_UTF8(rx)) { | |
07bc277f | 662 | const char * const b = RX_SUBBEG(rx); |
0bd48802 | 663 | if (b) |
f5a63d97 | 664 | i = utf8_length((U8*)b, (U8*)(b+i)); |
0bd48802 | 665 | } |
727405f8 | 666 | |
0bd48802 | 667 | sv_setiv(sv, i); |
1aa99e6b | 668 | } |
0bd48802 | 669 | } |
6cef1e77 IZ |
670 | } |
671 | return 0; | |
672 | } | |
673 | ||
e4b89193 | 674 | int |
a29d06ed MG |
675 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
676 | { | |
7918f24d | 677 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET; |
d4c19fe8 AL |
678 | PERL_UNUSED_ARG(sv); |
679 | PERL_UNUSED_ARG(mg); | |
6ad8f254 | 680 | Perl_croak_no_modify(aTHX); |
0dbb1585 | 681 | NORETURN_FUNCTION_END; |
a29d06ed MG |
682 | } |
683 | ||
93a17b20 | 684 | U32 |
864dbfa3 | 685 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 686 | { |
97aff369 | 687 | dVAR; |
eb578fdb KW |
688 | I32 paren; |
689 | I32 i; | |
690 | const REGEXP * rx; | |
2fdbfb4d | 691 | const char * const remaining = mg->mg_ptr + 1; |
93a17b20 | 692 | |
7918f24d NC |
693 | PERL_ARGS_ASSERT_MAGIC_LEN; |
694 | ||
93a17b20 | 695 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
696 | case '\020': |
697 | if (*remaining == '\0') { /* ^P */ | |
698 | break; | |
699 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
700 | goto do_prematch; | |
701 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
702 | goto do_postmatch; | |
703 | } | |
704 | break; | |
705 | case '\015': /* $^MATCH */ | |
706 | if (strEQ(remaining, "ATCH")) { | |
707 | goto do_match; | |
708 | } else { | |
709 | break; | |
710 | } | |
711 | case '`': | |
712 | do_prematch: | |
f1b875a0 | 713 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
714 | goto maybegetparen; |
715 | case '\'': | |
716 | do_postmatch: | |
f1b875a0 | 717 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
718 | goto maybegetparen; |
719 | case '&': | |
720 | do_match: | |
f1b875a0 | 721 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d | 722 | goto maybegetparen; |
93a17b20 | 723 | case '1': case '2': case '3': case '4': |
2fdbfb4d AB |
724 | case '5': case '6': case '7': case '8': case '9': |
725 | paren = atoi(mg->mg_ptr); | |
726 | maybegetparen: | |
aaa362c4 | 727 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
728 | getparen: |
729 | i = CALLREG_NUMBUF_LENGTH((REGEXP * const)rx, sv, paren); | |
cf93c79d | 730 | |
ffc61ed2 | 731 | if (i < 0) |
0844c848 | 732 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 733 | return i; |
2fdbfb4d | 734 | } else { |
235bddc8 | 735 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 736 | report_uninit(sv); |
2fdbfb4d | 737 | return 0; |
93a17b20 | 738 | } |
93a17b20 | 739 | case '+': |
aaa362c4 | 740 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f | 741 | paren = RX_LASTPAREN(rx); |
13f57bf8 CS |
742 | if (paren) |
743 | goto getparen; | |
93a17b20 | 744 | } |
748a9306 | 745 | return 0; |
a01268b5 JH |
746 | case '\016': /* ^N */ |
747 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f | 748 | paren = RX_LASTCLOSEPAREN(rx); |
a01268b5 JH |
749 | if (paren) |
750 | goto getparen; | |
751 | } | |
752 | return 0; | |
93a17b20 LW |
753 | } |
754 | magic_get(sv,mg); | |
2d8e6c8d | 755 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 | 756 | sv_2pv(sv, 0); |
2d8e6c8d | 757 | } |
93a17b20 LW |
758 | if (SvPOK(sv)) |
759 | return SvCUR(sv); | |
760 | return 0; | |
761 | } | |
762 | ||
ad3296c6 | 763 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
764 | if (SvPOK(sv)) { \ |
765 | STRLEN len = SvCUR(sv); \ | |
766 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
767 | while (len > 0 && isSPACE(p[len-1])) \ |
768 | --len; \ | |
769 | SvCUR_set(sv, len); \ | |
770 | p[len] = '\0'; \ | |
771 | } \ | |
ad3296c6 SH |
772 | } STMT_END |
773 | ||
8b850bd5 NC |
774 | void |
775 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
776 | { | |
7918f24d NC |
777 | PERL_ARGS_ASSERT_EMULATE_COP_IO; |
778 | ||
8b850bd5 NC |
779 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) |
780 | sv_setsv(sv, &PL_sv_undef); | |
781 | else { | |
782 | sv_setpvs(sv, ""); | |
783 | SvUTF8_off(sv); | |
784 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
20439bc7 | 785 | SV *const value = cop_hints_fetch_pvs(c, "open<", 0); |
8b850bd5 NC |
786 | assert(value); |
787 | sv_catsv(sv, value); | |
788 | } | |
789 | sv_catpvs(sv, "\0"); | |
790 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
20439bc7 | 791 | SV *const value = cop_hints_fetch_pvs(c, "open>", 0); |
8b850bd5 NC |
792 | assert(value); |
793 | sv_catsv(sv, value); | |
794 | } | |
795 | } | |
796 | } | |
797 | ||
25bbd826 CB |
798 | #ifdef VMS |
799 | #include <descrip.h> | |
800 | #include <starlet.h> | |
801 | #endif | |
802 | ||
79072805 | 803 | int |
864dbfa3 | 804 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 805 | { |
27da23d5 | 806 | dVAR; |
eb578fdb KW |
807 | I32 paren; |
808 | const char *s = NULL; | |
809 | REGEXP *rx; | |
823a54a3 AL |
810 | const char * const remaining = mg->mg_ptr + 1; |
811 | const char nextchar = *remaining; | |
79072805 | 812 | |
7918f24d NC |
813 | PERL_ARGS_ASSERT_MAGIC_GET; |
814 | ||
79072805 | 815 | switch (*mg->mg_ptr) { |
748a9306 | 816 | case '\001': /* ^A */ |
f2da823f FC |
817 | if (SvOK(PL_bodytarget)) sv_copypv(sv, PL_bodytarget); |
818 | else sv_setsv(sv, &PL_sv_undef); | |
125b9982 NT |
819 | if (SvTAINTED(PL_bodytarget)) |
820 | SvTAINTED_on(sv); | |
748a9306 | 821 | break; |
e5218da5 | 822 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 823 | if (nextchar == '\0') { |
e5218da5 GA |
824 | sv_setiv(sv, (IV)PL_minus_c); |
825 | } | |
823a54a3 | 826 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
827 | sv_setiv(sv, (IV)STATUS_NATIVE); |
828 | } | |
49460fe6 NIS |
829 | break; |
830 | ||
79072805 | 831 | case '\004': /* ^D */ |
aea4f609 | 832 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 833 | break; |
28f23441 | 834 | case '\005': /* ^E */ |
823a54a3 | 835 | if (nextchar == '\0') { |
e37778c2 | 836 | #if defined(VMS) |
0a378802 | 837 | { |
0a378802 JH |
838 | char msg[255]; |
839 | $DESCRIPTOR(msgdsc,msg); | |
840 | sv_setnv(sv,(NV) vaxc$errno); | |
841 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
842 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
843 | else | |
76f68e9b | 844 | sv_setpvs(sv,""); |
0a378802 | 845 | } |
4b645107 | 846 | #elif defined(OS2) |
0a378802 JH |
847 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
848 | sv_setnv(sv, (NV)errno); | |
849 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
850 | } else { | |
851 | if (errno != errno_isOS2) { | |
823a54a3 | 852 | const int tmp = _syserrno(); |
0a378802 JH |
853 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
854 | Perl_rc = tmp; | |
855 | } | |
856 | sv_setnv(sv, (NV)Perl_rc); | |
857 | sv_setpv(sv, os2error(Perl_rc)); | |
858 | } | |
4b645107 | 859 | #elif defined(WIN32) |
0a378802 | 860 | { |
d4c19fe8 | 861 | const DWORD dwErr = GetLastError(); |
0a378802 | 862 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 863 | if (dwErr) { |
0a378802 JH |
864 | PerlProc_GetOSError(sv, dwErr); |
865 | } | |
866 | else | |
76f68e9b | 867 | sv_setpvs(sv, ""); |
0a378802 JH |
868 | SetLastError(dwErr); |
869 | } | |
22fae026 | 870 | #else |
f6c8f21d | 871 | { |
4ee39169 | 872 | dSAVE_ERRNO; |
f6c8f21d | 873 | sv_setnv(sv, (NV)errno); |
666ea192 | 874 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 875 | RESTORE_ERRNO; |
f6c8f21d | 876 | } |
28f23441 | 877 | #endif |
ad3296c6 | 878 | SvRTRIM(sv); |
0a378802 JH |
879 | SvNOK_on(sv); /* what a wonderful hack! */ |
880 | } | |
823a54a3 | 881 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
882 | sv_setsv(sv, PL_encoding); |
883 | break; | |
79072805 | 884 | case '\006': /* ^F */ |
3280af22 | 885 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 886 | break; |
9ebf26ad FR |
887 | case '\007': /* ^GLOBAL_PHASE */ |
888 | if (strEQ(remaining, "LOBAL_PHASE")) { | |
889 | sv_setpvn(sv, PL_phase_names[PL_phase], | |
890 | strlen(PL_phase_names[PL_phase])); | |
891 | } | |
892 | break; | |
a0d0e21e | 893 | case '\010': /* ^H */ |
3280af22 | 894 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 895 | break; |
9d116dd7 | 896 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 897 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 898 | break; |
ac27b0f5 | 899 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 900 | if (nextchar == '\0') { |
ac27b0f5 | 901 | sv_setpv(sv, PL_osname); |
3511154c DM |
902 | SvTAINTED_off(sv); |
903 | } | |
823a54a3 | 904 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 905 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 906 | } |
28f23441 | 907 | break; |
9ebf26ad | 908 | case '\020': |
cde0cee5 YO |
909 | if (nextchar == '\0') { /* ^P */ |
910 | sv_setiv(sv, (IV)PL_perldb); | |
911 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
912 | goto do_prematch_fetch; | |
913 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
914 | goto do_postmatch_fetch; | |
915 | } | |
79072805 | 916 | break; |
fb73857a | 917 | case '\023': /* ^S */ |
823a54a3 | 918 | if (nextchar == '\0') { |
bc177e6b | 919 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 920 | SvOK_off(sv); |
3280af22 | 921 | else if (PL_in_eval) |
6dc8a9e4 | 922 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
923 | else |
924 | sv_setiv(sv, 0); | |
d58bf5aa | 925 | } |
fb73857a | 926 | break; |
79072805 | 927 | case '\024': /* ^T */ |
823a54a3 | 928 | if (nextchar == '\0') { |
88e89b8a | 929 | #ifdef BIG_TIME |
7c36658b | 930 | sv_setnv(sv, PL_basetime); |
88e89b8a | 931 | #else |
7c36658b | 932 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 933 | #endif |
7c36658b | 934 | } |
823a54a3 | 935 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
936 | sv_setiv(sv, PL_tainting |
937 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
938 | : 0); | |
7c36658b | 939 | break; |
e07ea26a | 940 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 941 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 942 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 943 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 944 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
945 | else if (strEQ(remaining, "TF8CACHE")) |
946 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
947 | break; |
948 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 949 | if (nextchar == '\0') |
4438c4b7 | 950 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 951 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 952 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 953 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
954 | } |
955 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
7e4f0450 FC |
956 | sv_setsv(sv, &PL_sv_undef); |
957 | break; | |
013b78e8 | 958 | } |
d3a7d8c7 | 959 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
960 | /* Get the bit mask for $warnings::Bits{all}, because |
961 | * it could have been extended by warnings::register */ | |
4bac9ae4 CS |
962 | HV * const bits = get_hv("warnings::Bits", 0); |
963 | SV ** const bits_all = bits ? hv_fetchs(bits, "all", FALSE) : NULL; | |
964 | if (bits_all) | |
965 | sv_copypv(sv, *bits_all); | |
966 | else | |
967 | sv_setpvn(sv, WARN_ALLstring, WARNsize); | |
ac27b0f5 | 968 | } |
4438c4b7 | 969 | else { |
72dc9ed5 NC |
970 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
971 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 972 | } |
4438c4b7 | 973 | } |
79072805 | 974 | break; |
cde0cee5 YO |
975 | case '\015': /* $^MATCH */ |
976 | if (strEQ(remaining, "ATCH")) { | |
79072805 LW |
977 | case '1': case '2': case '3': case '4': |
978 | case '5': case '6': case '7': case '8': case '9': case '&': | |
cde0cee5 YO |
979 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
980 | /* | |
159b6efe | 981 | * Pre-threads, this was paren = atoi(GvENAME((const GV *)mg->mg_obj)); |
cde0cee5 YO |
982 | * XXX Does the new way break anything? |
983 | */ | |
984 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
2fdbfb4d | 985 | CALLREG_NUMBUF_FETCH(rx,paren,sv); |
cde0cee5 YO |
986 | break; |
987 | } | |
988 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
989 | } |
990 | break; | |
991 | case '+': | |
aaa362c4 | 992 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f NC |
993 | if (RX_LASTPAREN(rx)) { |
994 | CALLREG_NUMBUF_FETCH(rx,RX_LASTPAREN(rx),sv); | |
44a2ac75 YO |
995 | break; |
996 | } | |
79072805 | 997 | } |
3280af22 | 998 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 999 | break; |
a01268b5 JH |
1000 | case '\016': /* ^N */ |
1001 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f NC |
1002 | if (RX_LASTCLOSEPAREN(rx)) { |
1003 | CALLREG_NUMBUF_FETCH(rx,RX_LASTCLOSEPAREN(rx),sv); | |
44a2ac75 YO |
1004 | break; |
1005 | } | |
1006 | ||
a01268b5 JH |
1007 | } |
1008 | sv_setsv(sv,&PL_sv_undef); | |
1009 | break; | |
79072805 | 1010 | case '`': |
cde0cee5 | 1011 | do_prematch_fetch: |
aaa362c4 | 1012 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 1013 | CALLREG_NUMBUF_FETCH(rx,-2,sv); |
93b32b6d | 1014 | break; |
79072805 | 1015 | } |
3280af22 | 1016 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
1017 | break; |
1018 | case '\'': | |
cde0cee5 | 1019 | do_postmatch_fetch: |
aaa362c4 | 1020 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 1021 | CALLREG_NUMBUF_FETCH(rx,-1,sv); |
93b32b6d | 1022 | break; |
79072805 | 1023 | } |
3280af22 | 1024 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
1025 | break; |
1026 | case '.': | |
3280af22 | 1027 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 1028 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 1029 | } |
79072805 LW |
1030 | break; |
1031 | case '?': | |
809a5acc | 1032 | { |
809a5acc | 1033 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 1034 | #ifdef COMPLEX_STATUS |
41cb7b2b | 1035 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
1036 | LvTARGOFF(sv) = PL_statusvalue; |
1037 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 1038 | #endif |
809a5acc | 1039 | } |
79072805 LW |
1040 | break; |
1041 | case '^': | |
acbe1b9d | 1042 | if (GvIOp(PL_defoutgv)) |
099be4f1 | 1043 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
1044 | if (s) |
1045 | sv_setpv(sv,s); | |
1046 | else { | |
3280af22 | 1047 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 1048 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
1049 | } |
1050 | break; | |
1051 | case '~': | |
acbe1b9d | 1052 | if (GvIOp(PL_defoutgv)) |
0daa599b | 1053 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 1054 | if (!s) |
3280af22 | 1055 | s = GvENAME(PL_defoutgv); |
79072805 LW |
1056 | sv_setpv(sv,s); |
1057 | break; | |
79072805 | 1058 | case '=': |
099be4f1 | 1059 | if (GvIO(PL_defoutgv)) |
0daa599b | 1060 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
1061 | break; |
1062 | case '-': | |
099be4f1 | 1063 | if (GvIO(PL_defoutgv)) |
0daa599b | 1064 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
1065 | break; |
1066 | case '%': | |
099be4f1 | 1067 | if (GvIO(PL_defoutgv)) |
0daa599b | 1068 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 | 1069 | break; |
79072805 LW |
1070 | case ':': |
1071 | break; | |
1072 | case '/': | |
1073 | break; | |
1074 | case '[': | |
e1dccc0d | 1075 | sv_setiv(sv, 0); |
79072805 LW |
1076 | break; |
1077 | case '|': | |
099be4f1 | 1078 | if (GvIO(PL_defoutgv)) |
0daa599b | 1079 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 | 1080 | break; |
79072805 | 1081 | case '\\': |
b2ce0fda | 1082 | if (PL_ors_sv) |
f28098ff | 1083 | sv_copypv(sv, PL_ors_sv); |
4bac9ae4 CS |
1084 | else |
1085 | sv_setsv(sv, &PL_sv_undef); | |
79072805 | 1086 | break; |
0e219455 | 1087 | case '$': /* $$ */ |
9cdac2a2 FC |
1088 | { |
1089 | IV const pid = (IV)PerlProc_getpid(); | |
19db9fb7 | 1090 | if (isGV(mg->mg_obj) || SvIV(mg->mg_obj) != pid) { |
9cdac2a2 FC |
1091 | /* never set manually, or at least not since last fork */ |
1092 | sv_setiv(sv, pid); | |
19db9fb7 Z |
1093 | /* never unsafe, even if reading in a tainted expression */ |
1094 | SvTAINTED_off(sv); | |
1095 | } | |
9cdac2a2 FC |
1096 | /* else a value has been assigned manually, so do nothing */ |
1097 | } | |
0e219455 MM |
1098 | break; |
1099 | ||
79072805 | 1100 | case '!': |
666d8aa2 CB |
1101 | { |
1102 | dSAVE_ERRNO; | |
a5f75d66 | 1103 | #ifdef VMS |
65202027 | 1104 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
a5f75d66 | 1105 | #else |
65202027 | 1106 | sv_setnv(sv, (NV)errno); |
666d8aa2 | 1107 | #endif |
88e89b8a | 1108 | #ifdef OS2 |
ed344e4f IZ |
1109 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
1110 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 1111 | else |
a5f75d66 | 1112 | #endif |
666ea192 | 1113 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 1114 | RESTORE_ERRNO; |
88e89b8a | 1115 | } |
666d8aa2 | 1116 | |
ad3296c6 | 1117 | SvRTRIM(sv); |
946ec16e | 1118 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1119 | break; |
1120 | case '<': | |
985213f2 | 1121 | sv_setiv(sv, (IV)PerlProc_getuid()); |
79072805 LW |
1122 | break; |
1123 | case '>': | |
985213f2 | 1124 | sv_setiv(sv, (IV)PerlProc_geteuid()); |
79072805 LW |
1125 | break; |
1126 | case '(': | |
985213f2 | 1127 | sv_setiv(sv, (IV)PerlProc_getgid()); |
79072805 LW |
1128 | goto add_groups; |
1129 | case ')': | |
985213f2 | 1130 | sv_setiv(sv, (IV)PerlProc_getegid()); |
79072805 | 1131 | add_groups: |
79072805 | 1132 | #ifdef HAS_GETGROUPS |
79072805 | 1133 | { |
57d7c65e | 1134 | Groups_t *gary = NULL; |
fb45abb2 | 1135 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1136 | Newx(gary, num_groups, Groups_t); |
1137 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1138 | for (i = 0; i < num_groups; i++) |
1139 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1140 | Safefree(gary); |
79072805 | 1141 | } |
155aba94 | 1142 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1143 | #endif |
79072805 | 1144 | break; |
79072805 LW |
1145 | case '0': |
1146 | break; | |
1147 | } | |
a0d0e21e | 1148 | return 0; |
79072805 LW |
1149 | } |
1150 | ||
1151 | int | |
864dbfa3 | 1152 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1153 | { |
8772537c | 1154 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1155 | |
7918f24d NC |
1156 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1157 | ||
79072805 | 1158 | if (uf && uf->uf_val) |
24f81a43 | 1159 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1160 | return 0; |
1161 | } | |
1162 | ||
1163 | int | |
864dbfa3 | 1164 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1165 | { |
27da23d5 | 1166 | dVAR; |
9ae3433d | 1167 | STRLEN len = 0, klen; |
12033064 | 1168 | const char * const key = MgPV_const(mg,klen); |
613c63b4 | 1169 | const char *s = NULL; |
1e422769 | 1170 | |
7918f24d NC |
1171 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1172 | ||
613c63b4 | 1173 | SvGETMAGIC(sv); |
12033064 | 1174 | if (SvOK(sv)) { |
613c63b4 CS |
1175 | /* defined environment variables are byte strings; unfortunately |
1176 | there is no SvPVbyte_force_nomg(), so we must do this piecewise */ | |
1177 | (void)SvPV_force_nomg_nolen(sv); | |
1178 | sv_utf8_downgrade(sv, /* fail_ok */ TRUE); | |
1179 | if (SvUTF8(sv)) { | |
1180 | Perl_ck_warner_d(aTHX_ packWARN(WARN_UTF8), "Wide character in %s", "setenv"); | |
1181 | SvUTF8_off(sv); | |
1182 | } | |
1183 | s = SvPVX(sv); | |
1184 | len = SvCUR(sv); | |
12033064 CS |
1185 | } |
1186 | my_setenv(key, s); /* does the deed */ | |
1187 | ||
a0d0e21e LW |
1188 | #ifdef DYNAMIC_ENV_FETCH |
1189 | /* We just undefd an environment var. Is a replacement */ | |
1190 | /* waiting in the wings? */ | |
1191 | if (!len) { | |
6bd66ee9 | 1192 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), key, klen, FALSE); |
fabdb6c0 | 1193 | if (valp) |
4ab59fcc | 1194 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1195 | } |
1196 | #endif | |
1e422769 | 1197 | |
39e571d4 | 1198 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1199 | /* And you'll never guess what the dog had */ |
1200 | /* in its mouth... */ | |
3280af22 | 1201 | if (PL_tainting) { |
1e422769 | 1202 | MgTAINTEDDIR_off(mg); |
1203 | #ifdef VMS | |
6bd66ee9 | 1204 | if (s && klen == 8 && strEQ(key, "DCL$PATH")) { |
b8ffc8df | 1205 | char pathbuf[256], eltbuf[256], *cp, *elt; |
1e422769 | 1206 | int i = 0, j = 0; |
1207 | ||
6fca0082 | 1208 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1209 | elt = eltbuf; |
1e422769 | 1210 | do { /* DCL$PATH may be a search list */ |
1211 | while (1) { /* as may dev portion of any element */ | |
1212 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1213 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1214 | cando_by_name(S_IWUSR,0,elt) ) { | |
1215 | MgTAINTEDDIR_on(mg); | |
1216 | return 0; | |
1217 | } | |
1218 | } | |
bd61b366 | 1219 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1220 | *cp = '\0'; |
1221 | if (my_trnlnm(elt, eltbuf, j++)) | |
1222 | elt = eltbuf; | |
1223 | else | |
1224 | break; | |
1225 | } | |
1226 | j = 0; | |
1227 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1228 | } | |
1229 | #endif /* VMS */ | |
12033064 | 1230 | if (s && klen == 4 && strEQ(key,"PATH")) { |
8772537c | 1231 | const char * const strend = s + len; |
463ee0b2 LW |
1232 | |
1233 | while (s < strend) { | |
96827780 | 1234 | char tmpbuf[256]; |
c623ac67 | 1235 | Stat_t st; |
5f74f29c | 1236 | I32 i; |
f5a63d97 AL |
1237 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1238 | const char path_sep = '|'; | |
1239 | #else | |
1240 | const char path_sep = ':'; | |
1241 | #endif | |
96827780 | 1242 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1243 | s, strend, path_sep, &i); |
463ee0b2 | 1244 | s++; |
bb7a0f54 | 1245 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1246 | #ifdef VMS |
1247 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1248 | #else | |
1249 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1250 | #endif | |
c6ed36e1 | 1251 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1252 | MgTAINTEDDIR_on(mg); |
1e422769 | 1253 | return 0; |
1254 | } | |
463ee0b2 | 1255 | } |
79072805 LW |
1256 | } |
1257 | } | |
39e571d4 | 1258 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1259 | |
79072805 LW |
1260 | return 0; |
1261 | } | |
1262 | ||
1263 | int | |
864dbfa3 | 1264 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1265 | { |
7918f24d | 1266 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1267 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1268 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1269 | return 0; |
1270 | } | |
1271 | ||
88e89b8a | 1272 | int |
864dbfa3 | 1273 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1274 | { |
97aff369 | 1275 | dVAR; |
7918f24d | 1276 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1277 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1278 | #if defined(VMS) |
cea2e8a9 | 1279 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1280 | #else |
3280af22 | 1281 | if (PL_localizing) { |
fb73857a | 1282 | HE* entry; |
b0269e46 | 1283 | my_clearenv(); |
85fbaab2 NC |
1284 | hv_iterinit(MUTABLE_HV(sv)); |
1285 | while ((entry = hv_iternext(MUTABLE_HV(sv)))) { | |
fb73857a | 1286 | I32 keylen; |
1287 | my_setenv(hv_iterkey(entry, &keylen), | |
85fbaab2 | 1288 | SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry))); |
fb73857a | 1289 | } |
1290 | } | |
1291 | #endif | |
1292 | return 0; | |
1293 | } | |
1294 | ||
1295 | int | |
864dbfa3 | 1296 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1297 | { |
27da23d5 | 1298 | dVAR; |
7918f24d | 1299 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1300 | PERL_UNUSED_ARG(sv); |
1301 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1302 | #if defined(VMS) |
1303 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1304 | #else | |
1305 | my_clearenv(); | |
1306 | #endif | |
3e3baf6d | 1307 | return 0; |
66b1d557 HM |
1308 | } |
1309 | ||
64ca3a65 | 1310 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1311 | #ifdef HAS_SIGPROCMASK |
1312 | static void | |
1313 | restore_sigmask(pTHX_ SV *save_sv) | |
1314 | { | |
0bd48802 | 1315 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1316 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1317 | } |
1318 | #endif | |
66b1d557 | 1319 | int |
864dbfa3 | 1320 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1321 | { |
97aff369 | 1322 | dVAR; |
88e89b8a | 1323 | /* Are we fetching a signal entry? */ |
708854f2 | 1324 | int i = (I16)mg->mg_private; |
7918f24d NC |
1325 | |
1326 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1327 | ||
708854f2 | 1328 | if (!i) { |
84c7b88c BF |
1329 | STRLEN siglen; |
1330 | const char * sig = MgPV_const(mg, siglen); | |
1331 | mg->mg_private = i = whichsig_pvn(sig, siglen); | |
708854f2 NC |
1332 | } |
1333 | ||
e02bfb16 | 1334 | if (i > 0) { |
22c35a8c GS |
1335 | if(PL_psig_ptr[i]) |
1336 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1337 | else { |
46da273f | 1338 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1339 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1340 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1341 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1342 | #endif |
1343 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1344 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1345 | sigstate = SIG_DFL; | |
85b332e2 | 1346 | #endif |
88e89b8a | 1347 | /* cache state so we don't fetch it again */ |
8aad04aa | 1348 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1349 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1350 | else |
3280af22 | 1351 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1352 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1353 | SvTEMP_off(sv); |
1354 | } | |
1355 | } | |
1356 | return 0; | |
1357 | } | |
1358 | int | |
864dbfa3 | 1359 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1360 | { |
7918f24d | 1361 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
179c85a2 | 1362 | |
38a124f0 | 1363 | magic_setsig(NULL, mg); |
179c85a2 | 1364 | return sv_unmagic(sv, mg->mg_type); |
88e89b8a | 1365 | } |
3d37d572 | 1366 | |
0a8e0eff | 1367 | Signal_t |
8aad04aa | 1368 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1369 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1370 | #else |
0a8e0eff | 1371 | Perl_csighandler(int sig) |
8aad04aa | 1372 | #endif |
0a8e0eff | 1373 | { |
1018e26f NIS |
1374 | #ifdef PERL_GET_SIG_CONTEXT |
1375 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1376 | #else | |
85b332e2 CL |
1377 | dTHX; |
1378 | #endif | |
23ada85b | 1379 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1380 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1381 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1382 | #endif |
2e34cc90 | 1383 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1384 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1385 | #ifdef KILL_BY_SIGPRC |
1386 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1387 | #else | |
1388 | exit(1); | |
1389 | #endif | |
1390 | #endif | |
406878dd | 1391 | if ( |
853d2c32 RGS |
1392 | #ifdef SIGILL |
1393 | sig == SIGILL || | |
1394 | #endif | |
1395 | #ifdef SIGBUS | |
1396 | sig == SIGBUS || | |
1397 | #endif | |
1398 | #ifdef SIGSEGV | |
1399 | sig == SIGSEGV || | |
1400 | #endif | |
1401 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 | 1402 | /* Call the perl level handler now-- |
31c91b43 | 1403 | * with risk we may be in malloc() or being destructed etc. */ |
6e324d09 | 1404 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1405 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1406 | #else |
1407 | (*PL_sighandlerp)(sig); | |
92807b6d | 1408 | #endif |
406878dd | 1409 | else { |
31c91b43 | 1410 | if (!PL_psig_pend) return; |
406878dd GA |
1411 | /* Set a flag to say this signal is pending, that is awaiting delivery after |
1412 | * the current Perl opcode completes */ | |
1413 | PL_psig_pend[sig]++; | |
1414 | ||
1415 | #ifndef SIG_PENDING_DIE_COUNT | |
1416 | # define SIG_PENDING_DIE_COUNT 120 | |
1417 | #endif | |
fe13d51d | 1418 | /* Add one to say _a_ signal is pending */ |
406878dd GA |
1419 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1420 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1421 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
1422 | } | |
0a8e0eff NIS |
1423 | } |
1424 | ||
2e34cc90 CL |
1425 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1426 | void | |
1427 | Perl_csighandler_init(void) | |
1428 | { | |
1429 | int sig; | |
27da23d5 | 1430 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1431 | |
1432 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1433 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1434 | dTHX; |
27da23d5 | 1435 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1436 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1437 | #endif |
1438 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1439 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1440 | #endif |
1441 | } | |
27da23d5 | 1442 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1443 | } |
1444 | #endif | |
1445 | ||
7fe50b8b LT |
1446 | #if defined HAS_SIGPROCMASK |
1447 | static void | |
1448 | unblock_sigmask(pTHX_ void* newset) | |
1449 | { | |
1450 | sigprocmask(SIG_UNBLOCK, (sigset_t*)newset, NULL); | |
1451 | } | |
1452 | #endif | |
1453 | ||
0a8e0eff NIS |
1454 | void |
1455 | Perl_despatch_signals(pTHX) | |
1456 | { | |
97aff369 | 1457 | dVAR; |
0a8e0eff NIS |
1458 | int sig; |
1459 | PL_sig_pending = 0; | |
1460 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1461 | if (PL_psig_pend[sig]) { | |
d0166017 | 1462 | dSAVE_ERRNO; |
7fe50b8b | 1463 | #ifdef HAS_SIGPROCMASK |
55534442 LT |
1464 | /* From sigaction(2) (FreeBSD man page): |
1465 | * | Signal routines normally execute with the signal that | |
1466 | * | caused their invocation blocked, but other signals may | |
1467 | * | yet occur. | |
1468 | * Emulation of this behavior (from within Perl) is enabled | |
1469 | * using sigprocmask | |
1470 | */ | |
1471 | int was_blocked; | |
1472 | sigset_t newset, oldset; | |
1473 | ||
1474 | sigemptyset(&newset); | |
1475 | sigaddset(&newset, sig); | |
1476 | sigprocmask(SIG_BLOCK, &newset, &oldset); | |
1477 | was_blocked = sigismember(&oldset, sig); | |
7fe50b8b LT |
1478 | if (!was_blocked) { |
1479 | SV* save_sv = newSVpvn((char *)(&newset), sizeof(sigset_t)); | |
1480 | ENTER; | |
1481 | SAVEFREESV(save_sv); | |
1482 | SAVEDESTRUCTOR_X(unblock_sigmask, SvPV_nolen(save_sv)); | |
1483 | } | |
55534442 | 1484 | #endif |
25da4428 | 1485 | PL_psig_pend[sig] = 0; |
6e324d09 | 1486 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1487 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1488 | #else |
1489 | (*PL_sighandlerp)(sig); | |
92807b6d | 1490 | #endif |
7fe50b8b | 1491 | #ifdef HAS_SIGPROCMASK |
55534442 | 1492 | if (!was_blocked) |
7fe50b8b | 1493 | LEAVE; |
55534442 | 1494 | #endif |
d0166017 | 1495 | RESTORE_ERRNO; |
0a8e0eff NIS |
1496 | } |
1497 | } | |
1498 | } | |
1499 | ||
38a124f0 | 1500 | /* sv of NULL signifies that we're acting as magic_clearsig. */ |
85e6fe83 | 1501 | int |
864dbfa3 | 1502 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1503 | { |
27da23d5 | 1504 | dVAR; |
79072805 | 1505 | I32 i; |
cbbf8932 | 1506 | SV** svp = NULL; |
2d4fcd5e AJ |
1507 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1508 | * effects (due to closures). We must make sure that the new disposition | |
1509 | * is in place before it is called. | |
1510 | */ | |
cbbf8932 | 1511 | SV* to_dec = NULL; |
e72dc28c | 1512 | STRLEN len; |
2d4fcd5e AJ |
1513 | #ifdef HAS_SIGPROCMASK |
1514 | sigset_t set, save; | |
1515 | SV* save_sv; | |
1516 | #endif | |
eb578fdb | 1517 | const char *s = MgPV_const(mg,len); |
7918f24d NC |
1518 | |
1519 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1520 | ||
748a9306 | 1521 | if (*s == '_') { |
84c7b88c | 1522 | if (memEQs(s, len, "__DIE__")) |
3280af22 | 1523 | svp = &PL_diehook; |
84c7b88c | 1524 | else if (memEQs(s, len, "__WARN__") |
38a124f0 NC |
1525 | && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) { |
1526 | /* Merge the existing behaviours, which are as follows: | |
1527 | magic_setsig, we always set svp to &PL_warnhook | |
1528 | (hence we always change the warnings handler) | |
1529 | For magic_clearsig, we don't change the warnings handler if it's | |
1530 | set to the &PL_warnhook. */ | |
3280af22 | 1531 | svp = &PL_warnhook; |
84c7b88c BF |
1532 | } else if (sv) { |
1533 | SV *tmp = sv_newmortal(); | |
1534 | Perl_croak(aTHX_ "No such hook: %s", | |
1535 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1536 | } | |
748a9306 | 1537 | i = 0; |
38a124f0 | 1538 | if (svp && *svp) { |
9289f461 RGS |
1539 | if (*svp != PERL_WARNHOOK_FATAL) |
1540 | to_dec = *svp; | |
cbbf8932 | 1541 | *svp = NULL; |
4633a7c4 | 1542 | } |
748a9306 LW |
1543 | } |
1544 | else { | |
708854f2 NC |
1545 | i = (I16)mg->mg_private; |
1546 | if (!i) { | |
84c7b88c | 1547 | i = whichsig_pvn(s, len); /* ...no, a brick */ |
58a26b12 | 1548 | mg->mg_private = (U16)i; |
708854f2 | 1549 | } |
86d86cad | 1550 | if (i <= 0) { |
84c7b88c BF |
1551 | if (sv) { |
1552 | SV *tmp = sv_newmortal(); | |
1553 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", | |
1554 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1555 | } | |
748a9306 LW |
1556 | return 0; |
1557 | } | |
2d4fcd5e AJ |
1558 | #ifdef HAS_SIGPROCMASK |
1559 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1560 | sigemptyset(&set); | |
1561 | sigaddset(&set,i); | |
1562 | sigprocmask(SIG_BLOCK, &set, &save); | |
1563 | ENTER; | |
9ff8e806 | 1564 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1565 | SAVEFREESV(save_sv); |
1566 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1567 | #endif | |
1568 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1569 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1570 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1571 | #endif |
23ada85b | 1572 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1573 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1574 | #endif |
2e34cc90 | 1575 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1576 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1577 | #endif |
2d4fcd5e | 1578 | to_dec = PL_psig_ptr[i]; |
38a124f0 NC |
1579 | if (sv) { |
1580 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); | |
1581 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ | |
79fd3822 NC |
1582 | |
1583 | /* Signals don't change name during the program's execution, so once | |
1584 | they're cached in the appropriate slot of PL_psig_name, they can | |
1585 | stay there. | |
1586 | ||
1587 | Ideally we'd find some way of making SVs at (C) compile time, or | |
1588 | at least, doing most of the work. */ | |
1589 | if (!PL_psig_name[i]) { | |
1590 | PL_psig_name[i] = newSVpvn(s, len); | |
1591 | SvREADONLY_on(PL_psig_name[i]); | |
1592 | } | |
38a124f0 | 1593 | } else { |
79fd3822 | 1594 | SvREFCNT_dec(PL_psig_name[i]); |
38a124f0 NC |
1595 | PL_psig_name[i] = NULL; |
1596 | PL_psig_ptr[i] = NULL; | |
1597 | } | |
748a9306 | 1598 | } |
38a124f0 | 1599 | if (sv && (isGV_with_GP(sv) || SvROK(sv))) { |
2d4fcd5e | 1600 | if (i) { |
5c1546dc | 1601 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1602 | } |
748a9306 | 1603 | else |
b37c2d43 | 1604 | *svp = SvREFCNT_inc_simple_NN(sv); |
38a124f0 | 1605 | } else { |
9dfa190b NC |
1606 | if (sv && SvOK(sv)) { |
1607 | s = SvPV_force(sv, len); | |
1608 | } else { | |
1609 | sv = NULL; | |
1610 | } | |
84c7b88c | 1611 | if (sv && memEQs(s, len,"IGNORE")) { |
9dfa190b | 1612 | if (i) { |
23ada85b | 1613 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
9dfa190b NC |
1614 | PL_sig_ignoring[i] = 1; |
1615 | (void)rsignal(i, PL_csighandlerp); | |
85b332e2 | 1616 | #else |
9dfa190b | 1617 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1618 | #endif |
9dfa190b | 1619 | } |
2d4fcd5e | 1620 | } |
84c7b88c | 1621 | else if (!sv || memEQs(s, len,"DEFAULT") || !len) { |
9dfa190b | 1622 | if (i) { |
2e34cc90 | 1623 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
9dfa190b NC |
1624 | PL_sig_defaulting[i] = 1; |
1625 | (void)rsignal(i, PL_csighandlerp); | |
2e34cc90 | 1626 | #else |
9dfa190b | 1627 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1628 | #endif |
9dfa190b NC |
1629 | } |
1630 | } | |
1631 | else { | |
1632 | /* | |
1633 | * We should warn if HINT_STRICT_REFS, but without | |
1634 | * access to a known hint bit in a known OP, we can't | |
1635 | * tell whether HINT_STRICT_REFS is in force or not. | |
1636 | */ | |
1637 | if (!strchr(s,':') && !strchr(s,'\'')) | |
1638 | Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"), | |
1639 | SV_GMAGIC); | |
1640 | if (i) | |
1641 | (void)rsignal(i, PL_csighandlerp); | |
1642 | else | |
1643 | *svp = SvREFCNT_inc_simple_NN(sv); | |
136e0459 | 1644 | } |
748a9306 | 1645 | } |
9dfa190b | 1646 | |
2d4fcd5e AJ |
1647 | #ifdef HAS_SIGPROCMASK |
1648 | if(i) | |
1649 | LEAVE; | |
1650 | #endif | |
ef8d46e8 | 1651 | SvREFCNT_dec(to_dec); |
79072805 LW |
1652 | return 0; |
1653 | } | |
64ca3a65 | 1654 | #endif /* !PERL_MICRO */ |
79072805 LW |
1655 | |
1656 | int | |
864dbfa3 | 1657 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1658 | { |
97aff369 | 1659 | dVAR; |
7918f24d | 1660 | PERL_ARGS_ASSERT_MAGIC_SETISA; |
8772537c | 1661 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1662 | |
89c14e2e | 1663 | /* Skip _isaelem because _isa will handle it shortly */ |
354b0578 | 1664 | if (PL_delaymagic & DM_ARRAY_ISA && mg->mg_type == PERL_MAGIC_isaelem) |
89c14e2e BB |
1665 | return 0; |
1666 | ||
0e446081 | 1667 | return magic_clearisa(NULL, mg); |
463ee0b2 LW |
1668 | } |
1669 | ||
0e446081 | 1670 | /* sv of NULL signifies that we're acting as magic_setisa. */ |
463ee0b2 | 1671 | int |
52b45067 RD |
1672 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1673 | { | |
1674 | dVAR; | |
1675 | HV* stash; | |
1676 | ||
7918f24d NC |
1677 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1678 | ||
52b45067 | 1679 | /* Bail out if destruction is going on */ |
627364f1 | 1680 | if(PL_phase == PERL_PHASE_DESTRUCT) return 0; |
52b45067 | 1681 | |
0e446081 NC |
1682 | if (sv) |
1683 | av_clear(MUTABLE_AV(sv)); | |
52b45067 | 1684 | |
6624142a FC |
1685 | if (SvTYPE(mg->mg_obj) != SVt_PVGV && SvSMAGICAL(mg->mg_obj)) |
1686 | /* This occurs with setisa_elem magic, which calls this | |
1687 | same function. */ | |
1688 | mg = mg_find(mg->mg_obj, PERL_MAGIC_isa); | |
1689 | ||
1690 | if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */ | |
1691 | SV **svp = AvARRAY((AV *)mg->mg_obj); | |
1692 | I32 items = AvFILLp((AV *)mg->mg_obj) + 1; | |
1693 | while (items--) { | |
1694 | stash = GvSTASH((GV *)*svp++); | |
1695 | if (stash && HvENAME(stash)) mro_isa_changed_in(stash); | |
1696 | } | |
1697 | ||
1698 | return 0; | |
1699 | } | |
1700 | ||
52b45067 | 1701 | stash = GvSTASH( |
6624142a | 1702 | (const GV *)mg->mg_obj |
52b45067 RD |
1703 | ); |
1704 | ||
00169e2c FC |
1705 | /* The stash may have been detached from the symbol table, so check its |
1706 | name before doing anything. */ | |
1707 | if (stash && HvENAME_get(stash)) | |
5562fa71 | 1708 | mro_isa_changed_in(stash); |
52b45067 RD |
1709 | |
1710 | return 0; | |
1711 | } | |
1712 | ||
1713 | int | |
864dbfa3 | 1714 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1715 | { |
85fbaab2 | 1716 | HV * const hv = MUTABLE_HV(LvTARG(sv)); |
6ff81951 | 1717 | I32 i = 0; |
7918f24d NC |
1718 | |
1719 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1720 | PERL_UNUSED_ARG(mg); |
7719e241 | 1721 | |
6ff81951 | 1722 | if (hv) { |
497b47a8 | 1723 | (void) hv_iterinit(hv); |
ad64d0ec | 1724 | if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
1b95d04f | 1725 | i = HvUSEDKEYS(hv); |
497b47a8 JH |
1726 | else { |
1727 | while (hv_iternext(hv)) | |
1728 | i++; | |
1729 | } | |
6ff81951 GS |
1730 | } |
1731 | ||
1732 | sv_setiv(sv, (IV)i); | |
1733 | return 0; | |
1734 | } | |
1735 | ||
1736 | int | |
864dbfa3 | 1737 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1738 | { |
7918f24d | 1739 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1740 | PERL_UNUSED_ARG(mg); |
946ec16e | 1741 | if (LvTARG(sv)) { |
85fbaab2 | 1742 | hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv)); |
946ec16e | 1743 | } |
1744 | return 0; | |
ac27b0f5 | 1745 | } |
946ec16e | 1746 | |
efaf3674 DM |
1747 | /* |
1748 | =for apidoc magic_methcall | |
1749 | ||
1750 | Invoke a magic method (like FETCH). | |
1751 | ||
2baee27b FC |
1752 | C<sv> and C<mg> are the tied thingy and the tie magic. |
1753 | ||
1754 | C<meth> is the name of the method to call. | |
1755 | ||
1756 | C<argc> is the number of args (in addition to $self) to pass to the method. | |
1757 | ||
1758 | The C<flags> can be: | |
1759 | ||
1760 | G_DISCARD invoke method with G_DISCARD flag and don't | |
1761 | return a value | |
1762 | G_UNDEF_FILL fill the stack with argc pointers to | |
1763 | PL_sv_undef | |
1764 | ||
1765 | The arguments themselves are any values following the C<flags> argument. | |
efaf3674 DM |
1766 | |
1767 | Returns the SV (if any) returned by the method, or NULL on failure. | |
1768 | ||
1769 | ||
1770 | =cut | |
1771 | */ | |
1772 | ||
1773 | SV* | |
c7a0c747 | 1774 | Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
046b0c7d | 1775 | U32 argc, ...) |
a0d0e21e | 1776 | { |
97aff369 | 1777 | dVAR; |
a0d0e21e | 1778 | dSP; |
efaf3674 | 1779 | SV* ret = NULL; |
463ee0b2 | 1780 | |
7918f24d NC |
1781 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1782 | ||
efaf3674 | 1783 | ENTER; |
d1d7a15d NC |
1784 | |
1785 | if (flags & G_WRITING_TO_STDERR) { | |
1786 | SAVETMPS; | |
1787 | ||
1788 | save_re_context(); | |
1789 | SAVESPTR(PL_stderrgv); | |
1790 | PL_stderrgv = NULL; | |
1791 | } | |
1792 | ||
efaf3674 | 1793 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1794 | PUSHMARK(SP); |
efaf3674 | 1795 | |
67549bd2 NC |
1796 | EXTEND(SP, argc+1); |
1797 | PUSHs(SvTIED_obj(sv, mg)); | |
1798 | if (flags & G_UNDEF_FILL) { | |
1799 | while (argc--) { | |
efaf3674 | 1800 | PUSHs(&PL_sv_undef); |
93965878 | 1801 | } |
67549bd2 | 1802 | } else if (argc > 0) { |
046b0c7d NC |
1803 | va_list args; |
1804 | va_start(args, argc); | |
1805 | ||
1806 | do { | |
1807 | SV *const sv = va_arg(args, SV *); | |
1808 | PUSHs(sv); | |
1809 | } while (--argc); | |
1810 | ||
1811 | va_end(args); | |
88e89b8a | 1812 | } |
463ee0b2 | 1813 | PUTBACK; |
efaf3674 DM |
1814 | if (flags & G_DISCARD) { |
1815 | call_method(meth, G_SCALAR|G_DISCARD); | |
1816 | } | |
1817 | else { | |
1818 | if (call_method(meth, G_SCALAR)) | |
1819 | ret = *PL_stack_sp--; | |
1820 | } | |
1821 | POPSTACK; | |
d1d7a15d NC |
1822 | if (flags & G_WRITING_TO_STDERR) |
1823 | FREETMPS; | |
efaf3674 DM |
1824 | LEAVE; |
1825 | return ret; | |
1826 | } | |
1827 | ||
1828 | ||
1829 | /* wrapper for magic_methcall that creates the first arg */ | |
463ee0b2 | 1830 | |
efaf3674 | 1831 | STATIC SV* |
c7a0c747 | 1832 | S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags, |
efaf3674 DM |
1833 | int n, SV *val) |
1834 | { | |
1835 | dVAR; | |
1836 | SV* arg1 = NULL; | |
1837 | ||
1838 | PERL_ARGS_ASSERT_MAGIC_METHCALL1; | |
1839 | ||
1840 | if (mg->mg_ptr) { | |
1841 | if (mg->mg_len >= 0) { | |
db4b3a1d | 1842 | arg1 = newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
efaf3674 DM |
1843 | } |
1844 | else if (mg->mg_len == HEf_SVKEY) | |
1845 | arg1 = MUTABLE_SV(mg->mg_ptr); | |
1846 | } | |
1847 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { | |
db4b3a1d | 1848 | arg1 = newSViv((IV)(mg->mg_len)); |
efaf3674 DM |
1849 | sv_2mortal(arg1); |
1850 | } | |
1851 | if (!arg1) { | |
046b0c7d | 1852 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n - 1, val); |
efaf3674 | 1853 | } |
046b0c7d | 1854 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n, arg1, val); |
946ec16e | 1855 | } |
1856 | ||
76e3520e | 1857 | STATIC int |
e1ec3a88 | 1858 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1859 | { |
efaf3674 DM |
1860 | dVAR; |
1861 | SV* ret; | |
463ee0b2 | 1862 | |
7918f24d NC |
1863 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1864 | ||
efaf3674 DM |
1865 | ret = magic_methcall1(sv, mg, meth, 0, 1, NULL); |
1866 | if (ret) | |
1867 | sv_setsv(sv, ret); | |
a0d0e21e LW |
1868 | return 0; |
1869 | } | |
463ee0b2 | 1870 | |
a0d0e21e | 1871 | int |
864dbfa3 | 1872 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1873 | { |
7918f24d NC |
1874 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1875 | ||
fd69380d | 1876 | if (mg->mg_type == PERL_MAGIC_tiedelem) |
a0d0e21e | 1877 | mg->mg_flags |= MGf_GSKIP; |
58f82c5c | 1878 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1879 | return 0; |
1880 | } | |
1881 | ||
1882 | int | |
864dbfa3 | 1883 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1884 | { |
efaf3674 | 1885 | dVAR; |
b112cff9 DM |
1886 | MAGIC *tmg; |
1887 | SV *val; | |
7918f24d NC |
1888 | |
1889 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1890 | ||
b112cff9 DM |
1891 | /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to |
1892 | * STORE() is not $val, but rather a PVLV (the sv in this call), whose | |
1893 | * public flags indicate its value based on copying from $val. Doing | |
1894 | * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us. | |
1895 | * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes | |
1896 | * wrong if $val happened to be tainted, as sv hasn't got magic | |
1897 | * enabled, even though taint magic is in the chain. In which case, | |
1898 | * fake up a temporary tainted value (this is easier than temporarily | |
1899 | * re-enabling magic on sv). */ | |
1900 | ||
1901 | if (PL_tainting && (tmg = mg_find(sv, PERL_MAGIC_taint)) | |
1902 | && (tmg->mg_len & 1)) | |
1903 | { | |
1904 | val = sv_mortalcopy(sv); | |
1905 | SvTAINTED_on(val); | |
1906 | } | |
1907 | else | |
1908 | val = sv; | |
1909 | ||
efaf3674 | 1910 | magic_methcall1(sv, mg, "STORE", G_DISCARD, 2, val); |
463ee0b2 LW |
1911 | return 0; |
1912 | } | |
1913 | ||
1914 | int | |
864dbfa3 | 1915 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1916 | { |
7918f24d NC |
1917 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1918 | ||
4c13be3f | 1919 | if (mg->mg_type == PERL_MAGIC_tiedscalar) return 0; |
a0d0e21e LW |
1920 | return magic_methpack(sv,mg,"DELETE"); |
1921 | } | |
463ee0b2 | 1922 | |
93965878 NIS |
1923 | |
1924 | U32 | |
864dbfa3 | 1925 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1926 | { |
efaf3674 | 1927 | dVAR; |
22846ab4 | 1928 | I32 retval = 0; |
efaf3674 | 1929 | SV* retsv; |
93965878 | 1930 | |
7918f24d NC |
1931 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1932 | ||
efaf3674 DM |
1933 | retsv = magic_methcall1(sv, mg, "FETCHSIZE", 0, 1, NULL); |
1934 | if (retsv) { | |
1935 | retval = SvIV(retsv)-1; | |
22846ab4 AB |
1936 | if (retval < -1) |
1937 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1938 | } |
22846ab4 | 1939 | return (U32) retval; |
93965878 NIS |
1940 | } |
1941 | ||
cea2e8a9 GS |
1942 | int |
1943 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1944 | { |
efaf3674 | 1945 | dVAR; |
463ee0b2 | 1946 | |
7918f24d NC |
1947 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1948 | ||
046b0c7d | 1949 | Perl_magic_methcall(aTHX_ sv, mg, "CLEAR", G_DISCARD, 0); |
463ee0b2 LW |
1950 | return 0; |
1951 | } | |
1952 | ||
1953 | int | |
864dbfa3 | 1954 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1955 | { |
efaf3674 DM |
1956 | dVAR; |
1957 | SV* ret; | |
463ee0b2 | 1958 | |
7918f24d NC |
1959 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1960 | ||
046b0c7d NC |
1961 | ret = SvOK(key) ? Perl_magic_methcall(aTHX_ sv, mg, "NEXTKEY", 0, 1, key) |
1962 | : Perl_magic_methcall(aTHX_ sv, mg, "FIRSTKEY", 0, 0); | |
efaf3674 DM |
1963 | if (ret) |
1964 | sv_setsv(key,ret); | |
79072805 LW |
1965 | return 0; |
1966 | } | |
1967 | ||
1968 | int | |
1146e912 | 1969 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1970 | { |
7918f24d NC |
1971 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1972 | ||
a0d0e21e | 1973 | return magic_methpack(sv,mg,"EXISTS"); |
ac27b0f5 | 1974 | } |
a0d0e21e | 1975 | |
a3bcc51e TP |
1976 | SV * |
1977 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1978 | { | |
efaf3674 | 1979 | dVAR; |
5fcbf73d | 1980 | SV *retval; |
ad64d0ec NC |
1981 | SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg); |
1982 | HV * const pkg = SvSTASH((const SV *)SvRV(tied)); | |
a3bcc51e | 1983 | |
7918f24d NC |
1984 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
1985 | ||
a3bcc51e TP |
1986 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1987 | SV *key; | |
bfcb3514 | 1988 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1989 | /* we are in an iteration so the hash cannot be empty */ |
1990 | return &PL_sv_yes; | |
1991 | /* no xhv_eiter so now use FIRSTKEY */ | |
1992 | key = sv_newmortal(); | |
ad64d0ec | 1993 | magic_nextpack(MUTABLE_SV(hv), mg, key); |
bfcb3514 | 1994 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1995 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1996 | } | |
1997 | ||
1998 | /* there is a SCALAR method that we can call */ | |
046b0c7d | 1999 | retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(hv), mg, "SCALAR", 0, 0); |
efaf3674 | 2000 | if (!retval) |
5fcbf73d | 2001 | retval = &PL_sv_undef; |
a3bcc51e TP |
2002 | return retval; |
2003 | } | |
2004 | ||
a0d0e21e | 2005 | int |
864dbfa3 | 2006 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2007 | { |
97aff369 | 2008 | dVAR; |
8772537c AL |
2009 | GV * const gv = PL_DBline; |
2010 | const I32 i = SvTRUE(sv); | |
2011 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 2012 | atoi(MgPV_nolen_const(mg)), FALSE); |
7918f24d NC |
2013 | |
2014 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
2015 | ||
8772537c AL |
2016 | if (svp && SvIOKp(*svp)) { |
2017 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
2018 | if (o) { | |
2019 | /* set or clear breakpoint in the relevant control op */ | |
2020 | if (i) | |
2021 | o->op_flags |= OPf_SPECIAL; | |
2022 | else | |
2023 | o->op_flags &= ~OPf_SPECIAL; | |
2024 | } | |
5df8de69 | 2025 | } |
79072805 LW |
2026 | return 0; |
2027 | } | |
2028 | ||
2029 | int | |
8772537c | 2030 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 2031 | { |
97aff369 | 2032 | dVAR; |
502c6561 | 2033 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2034 | |
2035 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
2036 | ||
83bf042f | 2037 | if (obj) { |
e1dccc0d | 2038 | sv_setiv(sv, AvFILL(obj)); |
83bf042f NC |
2039 | } else { |
2040 | SvOK_off(sv); | |
2041 | } | |
79072805 LW |
2042 | return 0; |
2043 | } | |
2044 | ||
2045 | int | |
864dbfa3 | 2046 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2047 | { |
97aff369 | 2048 | dVAR; |
502c6561 | 2049 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2050 | |
2051 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
2052 | ||
83bf042f | 2053 | if (obj) { |
e1dccc0d | 2054 | av_fill(obj, SvIV(sv)); |
83bf042f | 2055 | } else { |
a2a5de95 NC |
2056 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
2057 | "Attempt to set length of freed array"); | |
83bf042f NC |
2058 | } |
2059 | return 0; | |
2060 | } | |
2061 | ||
2062 | int | |
83f29afa VP |
2063 | Perl_magic_cleararylen_p(pTHX_ SV *sv, MAGIC *mg) |
2064 | { | |
2065 | dVAR; | |
2066 | ||
2067 | PERL_ARGS_ASSERT_MAGIC_CLEARARYLEN_P; | |
2068 | PERL_UNUSED_ARG(sv); | |
2069 | ||
2070 | /* Reset the iterator when the array is cleared */ | |
3565fbf3 VP |
2071 | #if IVSIZE == I32SIZE |
2072 | *((IV *) &(mg->mg_len)) = 0; | |
2073 | #else | |
83f29afa VP |
2074 | if (mg->mg_ptr) |
2075 | *((IV *) mg->mg_ptr) = 0; | |
3565fbf3 | 2076 | #endif |
83f29afa VP |
2077 | |
2078 | return 0; | |
2079 | } | |
2080 | ||
2081 | int | |
83bf042f NC |
2082 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) |
2083 | { | |
97aff369 | 2084 | dVAR; |
7918f24d NC |
2085 | |
2086 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; | |
53c1dcc0 | 2087 | PERL_UNUSED_ARG(sv); |
7918f24d | 2088 | |
94f3782b DM |
2089 | /* during global destruction, mg_obj may already have been freed */ |
2090 | if (PL_in_clean_all) | |
1ea47f64 | 2091 | return 0; |
94f3782b | 2092 | |
83bf042f NC |
2093 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
2094 | ||
2095 | if (mg) { | |
2096 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
2097 | reference. Hence the we (the array) are about to go away with it | |
2098 | still pointing at us. Clear its pointer, else it would be pointing | |
2099 | at free memory. See the comment in sv_magic about reference loops, | |
2100 | and why it can't own a reference to us. */ | |
2101 | mg->mg_obj = 0; | |
2102 | } | |
a0d0e21e LW |
2103 | return 0; |
2104 | } | |
2105 | ||
2106 | int | |
864dbfa3 | 2107 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2108 | { |
97aff369 | 2109 | dVAR; |
16eb5365 | 2110 | SV* const lsv = LvTARG(sv); |
7918f24d NC |
2111 | |
2112 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
16eb5365 | 2113 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2114 | |
a0d0e21e | 2115 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
2116 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
2117 | if (found && found->mg_len >= 0) { | |
2118 | I32 i = found->mg_len; | |
7e2040f0 | 2119 | if (DO_UTF8(lsv)) |
a0ed51b3 | 2120 | sv_pos_b2u(lsv, &i); |
e1dccc0d | 2121 | sv_setiv(sv, i); |
a0d0e21e LW |
2122 | return 0; |
2123 | } | |
2124 | } | |
0c34ef67 | 2125 | SvOK_off(sv); |
a0d0e21e LW |
2126 | return 0; |
2127 | } | |
2128 | ||
2129 | int | |
864dbfa3 | 2130 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2131 | { |
97aff369 | 2132 | dVAR; |
16eb5365 | 2133 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
2134 | SSize_t pos; |
2135 | STRLEN len; | |
c00206c8 | 2136 | STRLEN ulen = 0; |
53d44271 | 2137 | MAGIC* found; |
a0d0e21e | 2138 | |
7918f24d | 2139 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
16eb5365 | 2140 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2141 | |
a0d0e21e | 2142 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
2143 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
2144 | else | |
2145 | found = NULL; | |
2146 | if (!found) { | |
a0d0e21e LW |
2147 | if (!SvOK(sv)) |
2148 | return 0; | |
d83f0a82 NC |
2149 | #ifdef PERL_OLD_COPY_ON_WRITE |
2150 | if (SvIsCOW(lsv)) | |
2151 | sv_force_normal_flags(lsv, 0); | |
2152 | #endif | |
3881461a | 2153 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 2154 | NULL, 0); |
a0d0e21e LW |
2155 | } |
2156 | else if (!SvOK(sv)) { | |
3881461a | 2157 | found->mg_len = -1; |
a0d0e21e LW |
2158 | return 0; |
2159 | } | |
4bac9ae4 | 2160 | len = SvPOK_nog(lsv) ? SvCUR(lsv) : sv_len(lsv); |
a0d0e21e | 2161 | |
e1dccc0d | 2162 | pos = SvIV(sv); |
a0ed51b3 | 2163 | |
7e2040f0 | 2164 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
2165 | ulen = sv_len_utf8(lsv); |
2166 | if (ulen) | |
2167 | len = ulen; | |
a0ed51b3 LW |
2168 | } |
2169 | ||
a0d0e21e LW |
2170 | if (pos < 0) { |
2171 | pos += len; | |
2172 | if (pos < 0) | |
2173 | pos = 0; | |
2174 | } | |
eb160463 | 2175 | else if (pos > (SSize_t)len) |
a0d0e21e | 2176 | pos = len; |
a0ed51b3 LW |
2177 | |
2178 | if (ulen) { | |
2179 | I32 p = pos; | |
2180 | sv_pos_u2b(lsv, &p, 0); | |
2181 | pos = p; | |
2182 | } | |
727405f8 | 2183 | |
3881461a AL |
2184 | found->mg_len = pos; |
2185 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 2186 | |
79072805 LW |
2187 | return 0; |
2188 | } | |
2189 | ||
2190 | int | |
864dbfa3 | 2191 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2192 | { |
2193 | STRLEN len; | |
35a4481c | 2194 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2195 | const char * const tmps = SvPV_const(lsv,len); |
777f7c56 EB |
2196 | STRLEN offs = LvTARGOFF(sv); |
2197 | STRLEN rem = LvTARGLEN(sv); | |
83f78d1a FC |
2198 | const bool negoff = LvFLAGS(sv) & 1; |
2199 | const bool negrem = LvFLAGS(sv) & 2; | |
7918f24d NC |
2200 | |
2201 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2202 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2203 | |
83f78d1a FC |
2204 | if (!translate_substr_offsets( |
2205 | SvUTF8(lsv) ? sv_len_utf8(lsv) : len, | |
2206 | negoff ? -(IV)offs : (IV)offs, !negoff, | |
2207 | negrem ? -(IV)rem : (IV)rem, !negrem, &offs, &rem | |
2208 | )) { | |
2209 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string"); | |
2210 | sv_setsv_nomg(sv, &PL_sv_undef); | |
2211 | return 0; | |
2212 | } | |
2213 | ||
9aa983d2 | 2214 | if (SvUTF8(lsv)) |
d931b1be | 2215 | offs = sv_pos_u2b_flags(lsv, offs, &rem, SV_CONST_RETURN); |
1c900557 | 2216 | sv_setpvn(sv, tmps + offs, rem); |
9aa983d2 | 2217 | if (SvUTF8(lsv)) |
2ef4b674 | 2218 | SvUTF8_on(sv); |
6ff81951 GS |
2219 | return 0; |
2220 | } | |
2221 | ||
2222 | int | |
864dbfa3 | 2223 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2224 | { |
97aff369 | 2225 | dVAR; |
83f78d1a | 2226 | STRLEN len, lsv_len, oldtarglen, newtarglen; |
5fcbf73d | 2227 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2228 | SV * const lsv = LvTARG(sv); |
777f7c56 EB |
2229 | STRLEN lvoff = LvTARGOFF(sv); |
2230 | STRLEN lvlen = LvTARGLEN(sv); | |
83f78d1a FC |
2231 | const bool negoff = LvFLAGS(sv) & 1; |
2232 | const bool neglen = LvFLAGS(sv) & 2; | |
7918f24d NC |
2233 | |
2234 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2235 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2236 | |
a74fb2cd FC |
2237 | SvGETMAGIC(lsv); |
2238 | if (SvROK(lsv)) | |
2239 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), | |
2240 | "Attempt to use reference as lvalue in substr" | |
2241 | ); | |
83f78d1a FC |
2242 | if (SvUTF8(lsv)) lsv_len = sv_len_utf8(lsv); |
2243 | else (void)SvPV_nomg(lsv,lsv_len); | |
2244 | if (!translate_substr_offsets( | |
2245 | lsv_len, | |
2246 | negoff ? -(IV)lvoff : (IV)lvoff, !negoff, | |
2247 | neglen ? -(IV)lvlen : (IV)lvlen, !neglen, &lvoff, &lvlen | |
2248 | )) | |
2249 | Perl_croak(aTHX_ "substr outside of string"); | |
2250 | oldtarglen = lvlen; | |
1aa99e6b | 2251 | if (DO_UTF8(sv)) { |
9aa983d2 | 2252 | sv_utf8_upgrade(lsv); |
d931b1be | 2253 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
a74fb2cd | 2254 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2255 | newtarglen = sv_len_utf8(sv); |
9aa983d2 JH |
2256 | SvUTF8_on(lsv); |
2257 | } | |
9bf12eaf | 2258 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 2259 | const char *utf8; |
d931b1be | 2260 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
83f78d1a | 2261 | newtarglen = len; |
5fcbf73d | 2262 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
a74fb2cd | 2263 | sv_insert_flags(lsv, lvoff, lvlen, utf8, len, 0); |
5fcbf73d | 2264 | Safefree(utf8); |
1aa99e6b | 2265 | } |
b76f3ce2 | 2266 | else { |
a74fb2cd | 2267 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2268 | newtarglen = len; |
b76f3ce2 | 2269 | } |
83f78d1a FC |
2270 | if (!neglen) LvTARGLEN(sv) = newtarglen; |
2271 | if (negoff) LvTARGOFF(sv) += newtarglen - oldtarglen; | |
b76f3ce2 | 2272 | |
79072805 LW |
2273 | return 0; |
2274 | } | |
2275 | ||
2276 | int | |
864dbfa3 | 2277 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2278 | { |
97aff369 | 2279 | dVAR; |
7918f24d NC |
2280 | |
2281 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; | |
8772537c | 2282 | PERL_UNUSED_ARG(sv); |
7918f24d | 2283 | |
27cc343c | 2284 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2285 | return 0; |
2286 | } | |
2287 | ||
2288 | int | |
864dbfa3 | 2289 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2290 | { |
97aff369 | 2291 | dVAR; |
7918f24d NC |
2292 | |
2293 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; | |
8772537c | 2294 | PERL_UNUSED_ARG(sv); |
7918f24d | 2295 | |
b01e650a DM |
2296 | /* update taint status */ |
2297 | if (PL_tainted) | |
2298 | mg->mg_len |= 1; | |
2299 | else | |
2300 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2301 | return 0; |
2302 | } | |
2303 | ||
2304 | int | |
864dbfa3 | 2305 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2306 | { |
35a4481c | 2307 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2308 | |
2309 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2310 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2311 | |
6136c704 AL |
2312 | if (lsv) |
2313 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2314 | else | |
0c34ef67 | 2315 | SvOK_off(sv); |
6ff81951 | 2316 | |
6ff81951 GS |
2317 | return 0; |
2318 | } | |
2319 | ||
2320 | int | |
864dbfa3 | 2321 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2322 | { |
7918f24d | 2323 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2324 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2325 | do_vecset(sv); /* XXX slurp this routine */ |
2326 | return 0; | |
2327 | } | |
2328 | ||
2329 | int | |
864dbfa3 | 2330 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 2331 | { |
97aff369 | 2332 | dVAR; |
a0714e2c | 2333 | SV *targ = NULL; |
7918f24d NC |
2334 | |
2335 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2336 | ||
5f05dabc | 2337 | if (LvTARGLEN(sv)) { |
68dc0745 | 2338 | if (mg->mg_obj) { |
8772537c | 2339 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2340 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0); |
6d822dc4 MS |
2341 | if (he) |
2342 | targ = HeVAL(he); | |
68dc0745 | 2343 | } |
2344 | else { | |
502c6561 | 2345 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
68dc0745 | 2346 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2347 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2348 | } | |
46da273f | 2349 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2350 | /* somebody else defined it for us */ |
2351 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2352 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2353 | LvTARGLEN(sv) = 0; |
2354 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2355 | mg->mg_obj = NULL; |
68dc0745 | 2356 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2357 | } | |
5f05dabc | 2358 | } |
71be2cbc | 2359 | else |
2360 | targ = LvTARG(sv); | |
3280af22 | 2361 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 2362 | return 0; |
2363 | } | |
2364 | ||
2365 | int | |
864dbfa3 | 2366 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2367 | { |
7918f24d | 2368 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2369 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2370 | if (LvTARGLEN(sv)) |
68dc0745 | 2371 | vivify_defelem(sv); |
2372 | if (LvTARG(sv)) { | |
5f05dabc | 2373 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2374 | SvSETMAGIC(LvTARG(sv)); |
2375 | } | |
5f05dabc | 2376 | return 0; |
2377 | } | |
2378 | ||
71be2cbc | 2379 | void |
864dbfa3 | 2380 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2381 | { |
97aff369 | 2382 | dVAR; |
74e13ce4 | 2383 | MAGIC *mg; |
a0714e2c | 2384 | SV *value = NULL; |
71be2cbc | 2385 | |
7918f24d NC |
2386 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2387 | ||
14befaf4 | 2388 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2389 | return; |
68dc0745 | 2390 | if (mg->mg_obj) { |
8772537c | 2391 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2392 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0); |
6d822dc4 MS |
2393 | if (he) |
2394 | value = HeVAL(he); | |
3280af22 | 2395 | if (!value || value == &PL_sv_undef) |
be2597df | 2396 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2397 | } |
68dc0745 | 2398 | else { |
502c6561 | 2399 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
5aabfad6 | 2400 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2401 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2402 | else { |
d4c19fe8 | 2403 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2404 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2405 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2406 | } |
2407 | } | |
b37c2d43 | 2408 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2409 | SvREFCNT_dec(LvTARG(sv)); |
2410 | LvTARG(sv) = value; | |
71be2cbc | 2411 | LvTARGLEN(sv) = 0; |
68dc0745 | 2412 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2413 | mg->mg_obj = NULL; |
68dc0745 | 2414 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2415 | } |
2416 | ||
2417 | int | |
864dbfa3 | 2418 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2419 | { |
7918f24d | 2420 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
5648c0ae DM |
2421 | Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj)); |
2422 | return 0; | |
810b8aa5 GS |
2423 | } |
2424 | ||
2425 | int | |
864dbfa3 | 2426 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2427 | { |
7918f24d | 2428 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2429 | PERL_UNUSED_CONTEXT; |
0177730e | 2430 | PERL_UNUSED_ARG(sv); |
565764a8 | 2431 | mg->mg_len = -1; |
93a17b20 LW |
2432 | return 0; |
2433 | } | |
2434 | ||
2435 | int | |
864dbfa3 | 2436 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2437 | { |
35a4481c | 2438 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2439 | |
7918f24d NC |
2440 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2441 | ||
79072805 | 2442 | if (uf && uf->uf_set) |
24f81a43 | 2443 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2444 | return 0; |
2445 | } | |
2446 | ||
c277df42 | 2447 | int |
faf82a0b AE |
2448 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2449 | { | |
488344d2 | 2450 | const char type = mg->mg_type; |
7918f24d NC |
2451 | |
2452 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2453 | ||
488344d2 NC |
2454 | if (type == PERL_MAGIC_qr) { |
2455 | } else if (type == PERL_MAGIC_bm) { | |
2456 | SvTAIL_off(sv); | |
2457 | SvVALID_off(sv); | |
2458 | } else { | |
2459 | assert(type == PERL_MAGIC_fm); | |
488344d2 NC |
2460 | } |
2461 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2462 | } |
2463 | ||
7a4c00b4 | 2464 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2465 | int |
864dbfa3 | 2466 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2467 | { |
7918f24d NC |
2468 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2469 | ||
bbce6d69 | 2470 | /* |
838b5b74 | 2471 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2472 | * and vanished with a faint plop. |
2473 | */ | |
96a5add6 | 2474 | PERL_UNUSED_CONTEXT; |
8772537c | 2475 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2476 | if (mg->mg_ptr) { |
2477 | Safefree(mg->mg_ptr); | |
2478 | mg->mg_ptr = NULL; | |
565764a8 | 2479 | mg->mg_len = -1; |
7a4c00b4 | 2480 | } |
bbce6d69 | 2481 | return 0; |
2482 | } | |
7a4c00b4 | 2483 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2484 | |
7e8c5dac HS |
2485 | /* Just clear the UTF-8 cache data. */ |
2486 | int | |
2487 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2488 | { | |
7918f24d | 2489 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2490 | PERL_UNUSED_CONTEXT; |
8772537c | 2491 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2492 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2493 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2494 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2495 | return 0; | |
2496 | } | |
2497 | ||
bbce6d69 | 2498 | int |
864dbfa3 | 2499 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2500 | { |
97aff369 | 2501 | dVAR; |
eb578fdb KW |
2502 | const char *s; |
2503 | I32 paren; | |
2504 | const REGEXP * rx; | |
2fdbfb4d | 2505 | const char * const remaining = mg->mg_ptr + 1; |
79072805 | 2506 | I32 i; |
8990e307 | 2507 | STRLEN len; |
125b9982 | 2508 | MAGIC *tmg; |
2fdbfb4d | 2509 | |
7918f24d NC |
2510 | PERL_ARGS_ASSERT_MAGIC_SET; |
2511 | ||
79072805 | 2512 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
2513 | case '\015': /* $^MATCH */ |
2514 | if (strEQ(remaining, "ATCH")) | |
2515 | goto do_match; | |
2516 | case '`': /* ${^PREMATCH} caught below */ | |
2517 | do_prematch: | |
f1b875a0 | 2518 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
2519 | goto setparen; |
2520 | case '\'': /* ${^POSTMATCH} caught below */ | |
2521 | do_postmatch: | |
f1b875a0 | 2522 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
2523 | goto setparen; |
2524 | case '&': | |
2525 | do_match: | |
f1b875a0 | 2526 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d AB |
2527 | goto setparen; |
2528 | case '1': case '2': case '3': case '4': | |
2529 | case '5': case '6': case '7': case '8': case '9': | |
104a8018 | 2530 | paren = atoi(mg->mg_ptr); |
2fdbfb4d | 2531 | setparen: |
1e05feb3 | 2532 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9bad346 | 2533 | setparen_got_rx: |
2fdbfb4d | 2534 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
1e05feb3 | 2535 | } else { |
2fdbfb4d AB |
2536 | /* Croak with a READONLY error when a numbered match var is |
2537 | * set without a previous pattern match. Unless it's C<local $1> | |
2538 | */ | |
d9bad346 | 2539 | croakparen: |
2fdbfb4d | 2540 | if (!PL_localizing) { |
6ad8f254 | 2541 | Perl_croak_no_modify(aTHX); |
2fdbfb4d AB |
2542 | } |
2543 | } | |
9b9e0be4 | 2544 | break; |
748a9306 | 2545 | case '\001': /* ^A */ |
f2da823f FC |
2546 | if (SvOK(sv)) sv_copypv(PL_bodytarget, sv); |
2547 | else SvOK_off(PL_bodytarget); | |
64eff8b7 DM |
2548 | FmLINES(PL_bodytarget) = 0; |
2549 | if (SvPOK(PL_bodytarget)) { | |
2550 | char *s = SvPVX(PL_bodytarget); | |
2551 | while ( ((s = strchr(s, '\n'))) ) { | |
2552 | FmLINES(PL_bodytarget)++; | |
2553 | s++; | |
2554 | } | |
2555 | } | |
125b9982 NT |
2556 | /* mg_set() has temporarily made sv non-magical */ |
2557 | if (PL_tainting) { | |
2558 | if ((tmg = mg_find(sv,PERL_MAGIC_taint)) && tmg->mg_len & 1) | |
2559 | SvTAINTED_on(PL_bodytarget); | |
2560 | else | |
2561 | SvTAINTED_off(PL_bodytarget); | |
2562 | } | |
748a9306 | 2563 | break; |
49460fe6 | 2564 | case '\003': /* ^C */ |
f2338a2e | 2565 | PL_minus_c = cBOOL(SvIV(sv)); |
49460fe6 NIS |
2566 | break; |
2567 | ||
79072805 | 2568 | case '\004': /* ^D */ |
b4ab917c | 2569 | #ifdef DEBUGGING |
b83604b4 | 2570 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2571 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
a58fb6f9 CS |
2572 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
2573 | dump_all_perl(!DEBUG_B_TEST); | |
b4ab917c | 2574 | #else |
38ab35f8 | 2575 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2576 | #endif |
79072805 | 2577 | break; |
28f23441 | 2578 | case '\005': /* ^E */ |
d0063567 | 2579 | if (*(mg->mg_ptr+1) == '\0') { |
e37778c2 | 2580 | #ifdef VMS |
38ab35f8 | 2581 | set_vaxc_errno(SvIV(sv)); |
e37778c2 NC |
2582 | #else |
2583 | # ifdef WIN32 | |
d0063567 | 2584 | SetLastError( SvIV(sv) ); |
e37778c2 NC |
2585 | # else |
2586 | # ifdef OS2 | |
38ab35f8 | 2587 | os2_setsyserrno(SvIV(sv)); |
e37778c2 | 2588 | # else |
d0063567 | 2589 | /* will anyone ever use this? */ |
38ab35f8 | 2590 | SETERRNO(SvIV(sv), 4); |
048c1ddf IZ |
2591 | # endif |
2592 | # endif | |
22fae026 | 2593 | #endif |
d0063567 DK |
2594 | } |
2595 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
ef8d46e8 | 2596 | SvREFCNT_dec(PL_encoding); |
d0063567 DK |
2597 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2598 | PL_encoding = newSVsv(sv); | |
2599 | } | |
2600 | else { | |
a0714e2c | 2601 | PL_encoding = NULL; |
d0063567 DK |
2602 | } |
2603 | } | |
2604 | break; | |
79072805 | 2605 | case '\006': /* ^F */ |
38ab35f8 | 2606 | PL_maxsysfd = SvIV(sv); |
79072805 | 2607 | break; |
a0d0e21e | 2608 | case '\010': /* ^H */ |
38ab35f8 | 2609 | PL_hints = SvIV(sv); |
a0d0e21e | 2610 | break; |
9d116dd7 | 2611 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2612 | Safefree(PL_inplace); |
bd61b366 | 2613 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2614 | break; |
d9bad346 FC |
2615 | case '\016': /* ^N */ |
2616 | if (PL_curpm && (rx = PM_GETRE(PL_curpm)) | |
2617 | && (paren = RX_LASTCLOSEPAREN(rx))) goto setparen_got_rx; | |
2618 | goto croakparen; | |
28f23441 | 2619 | case '\017': /* ^O */ |
ac27b0f5 | 2620 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2621 | Safefree(PL_osname); |
bd61b366 | 2622 | PL_osname = NULL; |
3511154c DM |
2623 | if (SvOK(sv)) { |
2624 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2625 | PL_osname = savesvpv(sv); |
3511154c | 2626 | } |
ac27b0f5 NIS |
2627 | } |
2628 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2629 | STRLEN len; |
2630 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2631 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 | 2632 | SV *tmp; |
8b850bd5 NC |
2633 | |
2634 | ||
2635 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
f747ebd6 | 2636 | PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; |
8b850bd5 NC |
2637 | |
2638 | /* Opening for input is more common than opening for output, so | |
2639 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 | 2640 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
f747ebd6 Z |
2641 | SvUTF8(sv)) |
2642 | : newSVpvs_flags("", SvUTF8(sv)); | |
2643 | (void)hv_stores(GvHV(PL_hintgv), "open>", tmp); | |
2644 | mg_set(tmp); | |
8b850bd5 | 2645 | |
f747ebd6 Z |
2646 | tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len, |
2647 | SvUTF8(sv)); | |
2648 | (void)hv_stores(GvHV(PL_hintgv), "open<", tmp); | |
2649 | mg_set(tmp); | |
ac27b0f5 | 2650 | } |
28f23441 | 2651 | break; |
79072805 | 2652 | case '\020': /* ^P */ |
2fdbfb4d AB |
2653 | if (*remaining == '\0') { /* ^P */ |
2654 | PL_perldb = SvIV(sv); | |
2655 | if (PL_perldb && !PL_DBsingle) | |
2656 | init_debugger(); | |
2657 | break; | |
2658 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2659 | goto do_prematch; | |
2660 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
2661 | goto do_postmatch; | |
2662 | } | |
9b9e0be4 | 2663 | break; |
79072805 | 2664 | case '\024': /* ^T */ |
88e89b8a | 2665 | #ifdef BIG_TIME |
6b88bc9c | 2666 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2667 | #else |
38ab35f8 | 2668 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2669 | #endif |
79072805 | 2670 | break; |
e07ea26a NC |
2671 | case '\025': /* ^UTF8CACHE */ |
2672 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2673 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2674 | } | |
2675 | break; | |
fde18df1 | 2676 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2677 | if (*(mg->mg_ptr+1) == '\0') { |
2678 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2679 | i = SvIV(sv); |
ac27b0f5 | 2680 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2681 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2682 | } |
599cee73 | 2683 | } |
0a378802 | 2684 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2685 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
7e4f0450 FC |
2686 | if (!SvPOK(sv)) { |
2687 | PL_compiling.cop_warnings = pWARN_STD; | |
d775746e GS |
2688 | break; |
2689 | } | |
f4fc7782 | 2690 | { |
b5477537 | 2691 | STRLEN len, i; |
d3a7d8c7 | 2692 | int accumulate = 0 ; |
f4fc7782 | 2693 | int any_fatals = 0 ; |
b83604b4 | 2694 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2695 | for (i = 0 ; i < len ; ++i) { |
2696 | accumulate |= ptr[i] ; | |
2697 | any_fatals |= (ptr[i] & 0xAA) ; | |
2698 | } | |
4243c432 NC |
2699 | if (!accumulate) { |
2700 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2701 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2702 | PL_compiling.cop_warnings = pWARN_NONE; | |
2703 | } | |
72dc9ed5 NC |
2704 | /* Yuck. I can't see how to abstract this: */ |
2705 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2706 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2707 | if (!specialWARN(PL_compiling.cop_warnings)) |
2708 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2709 | PL_compiling.cop_warnings = pWARN_ALL; |
2710 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2711 | } |
d3a7d8c7 | 2712 | else { |
72dc9ed5 NC |
2713 | STRLEN len; |
2714 | const char *const p = SvPV_const(sv, len); | |
2715 | ||
2716 | PL_compiling.cop_warnings | |
8ee4cf24 | 2717 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2718 | p, len); |
2719 | ||
d3a7d8c7 GS |
2720 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2721 | PL_dowarn |= G_WARN_ONCE ; | |
2722 | } | |
f4fc7782 | 2723 | |
d3a7d8c7 | 2724 | } |
4438c4b7 | 2725 | } |
971a9dd3 | 2726 | } |
79072805 LW |
2727 | break; |
2728 | case '.': | |
3280af22 NIS |
2729 | if (PL_localizing) { |
2730 | if (PL_localizing == 1) | |
7766f137 | 2731 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2732 | } |
3280af22 | 2733 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2734 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2735 | break; |
2736 | case '^': | |
acbe1b9d FC |
2737 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2738 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2739 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2740 | break; |
2741 | case '~': | |
acbe1b9d FC |
2742 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2743 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2744 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2745 | break; |
2746 | case '=': | |
acbe1b9d | 2747 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2748 | break; |
2749 | case '-': | |
acbe1b9d FC |
2750 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
2751 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
099be4f1 | 2752 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 LW |
2753 | break; |
2754 | case '%': | |
acbe1b9d | 2755 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2756 | break; |
2757 | case '|': | |
4b65379b | 2758 | { |
099be4f1 | 2759 | IO * const io = GvIO(PL_defoutgv); |
720f287d AB |
2760 | if(!io) |
2761 | break; | |
38ab35f8 | 2762 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2763 | IoFLAGS(io) &= ~IOf_FLUSH; |
2764 | else { | |
2765 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2766 | PerlIO *ofp = IoOFP(io); | |
2767 | if (ofp) | |
2768 | (void)PerlIO_flush(ofp); | |
2769 | IoFLAGS(io) |= IOf_FLUSH; | |
2770 | } | |
2771 | } | |
79072805 LW |
2772 | } |
2773 | break; | |
79072805 | 2774 | case '/': |
3280af22 | 2775 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2776 | PL_rs = newSVsv(sv); |
79072805 LW |
2777 | break; |
2778 | case '\\': | |
ef8d46e8 | 2779 | SvREFCNT_dec(PL_ors_sv); |
6bc2995b | 2780 | if (SvOK(sv)) { |
7889fe52 | 2781 | PL_ors_sv = newSVsv(sv); |
009c130f | 2782 | } |
e3c19b7b | 2783 | else { |
a0714e2c | 2784 | PL_ors_sv = NULL; |
e3c19b7b | 2785 | } |
79072805 | 2786 | break; |
7d69d4a6 FC |
2787 | case '[': |
2788 | if (SvIV(sv) != 0) | |
2789 | Perl_croak(aTHX_ "Assigning non-zero to $[ is no longer possible"); | |
2790 | break; | |
79072805 | 2791 | case '?': |
ff0cee69 | 2792 | #ifdef COMPLEX_STATUS |
6b88bc9c | 2793 | if (PL_localizing == 2) { |
41cb7b2b | 2794 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
2795 | PL_statusvalue = LvTARGOFF(sv); |
2796 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2797 | } |
2798 | else | |
2799 | #endif | |
2800 | #ifdef VMSISH_STATUS | |
2801 | if (VMSISH_STATUS) | |
fb38d079 | 2802 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2803 | else |
2804 | #endif | |
38ab35f8 | 2805 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2806 | break; |
2807 | case '!': | |
93189314 JH |
2808 | { |
2809 | #ifdef VMS | |
2810 | # define PERL_VMS_BANG vaxc$errno | |
2811 | #else | |
2812 | # define PERL_VMS_BANG 0 | |
2813 | #endif | |
91487cfc | 2814 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2815 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2816 | } | |
79072805 LW |
2817 | break; |
2818 | case '<': | |
985213f2 AB |
2819 | { |
2820 | const IV new_uid = SvIV(sv); | |
2821 | PL_delaymagic_uid = new_uid; | |
3280af22 NIS |
2822 | if (PL_delaymagic) { |
2823 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2824 | break; /* don't do magic till later */ |
2825 | } | |
2826 | #ifdef HAS_SETRUID | |
985213f2 | 2827 | (void)setruid((Uid_t)new_uid); |
79072805 LW |
2828 | #else |
2829 | #ifdef HAS_SETREUID | |
985213f2 | 2830 | (void)setreuid((Uid_t)new_uid, (Uid_t)-1); |
748a9306 | 2831 | #else |
85e6fe83 | 2832 | #ifdef HAS_SETRESUID |
985213f2 | 2833 | (void)setresuid((Uid_t)new_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2834 | #else |
985213f2 | 2835 | if (new_uid == PerlProc_geteuid()) { /* special case $< = $> */ |
75870ed3 | 2836 | #ifdef PERL_DARWIN |
2837 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
985213f2 | 2838 | if (new_uid != 0 && PerlProc_getuid() == 0) |
75870ed3 | 2839 | (void)PerlProc_setuid(0); |
2840 | #endif | |
985213f2 | 2841 | (void)PerlProc_setuid(new_uid); |
75870ed3 | 2842 | } else { |
cea2e8a9 | 2843 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2844 | } |
79072805 LW |
2845 | #endif |
2846 | #endif | |
85e6fe83 | 2847 | #endif |
79072805 | 2848 | break; |
985213f2 | 2849 | } |
79072805 | 2850 | case '>': |
985213f2 AB |
2851 | { |
2852 | const UV new_euid = SvIV(sv); | |
2853 | PL_delaymagic_euid = new_euid; | |
3280af22 NIS |
2854 | if (PL_delaymagic) { |
2855 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2856 | break; /* don't do magic till later */ |
2857 | } | |
2858 | #ifdef HAS_SETEUID | |
985213f2 | 2859 | (void)seteuid((Uid_t)new_euid); |
79072805 LW |
2860 | #else |
2861 | #ifdef HAS_SETREUID | |
985213f2 | 2862 | (void)setreuid((Uid_t)-1, (Uid_t)new_euid); |
85e6fe83 LW |
2863 | #else |
2864 | #ifdef HAS_SETRESUID | |
985213f2 | 2865 | (void)setresuid((Uid_t)-1, (Uid_t)new_euid, (Uid_t)-1); |
79072805 | 2866 | #else |
985213f2 | 2867 | if (new_euid == PerlProc_getuid()) /* special case $> = $< */ |
382669a9 | 2868 | PerlProc_setuid(new_euid); |
a0d0e21e | 2869 | else { |
cea2e8a9 | 2870 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2871 | } |
79072805 LW |
2872 | #endif |
2873 | #endif | |
85e6fe83 | 2874 | #endif |
79072805 | 2875 | break; |
985213f2 | 2876 | } |
79072805 | 2877 | case '(': |
985213f2 AB |
2878 | { |
2879 | const UV new_gid = SvIV(sv); | |
2880 | PL_delaymagic_gid = new_gid; | |
3280af22 NIS |
2881 | if (PL_delaymagic) { |
2882 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2883 | break; /* don't do magic till later */ |
2884 | } | |
2885 | #ifdef HAS_SETRGID | |
985213f2 | 2886 | (void)setrgid((Gid_t)new_gid); |
79072805 LW |
2887 | #else |
2888 | #ifdef HAS_SETREGID | |
985213f2 | 2889 | (void)setregid((Gid_t)new_gid, (Gid_t)-1); |
85e6fe83 LW |
2890 | #else |
2891 | #ifdef HAS_SETRESGID | |
985213f2 | 2892 | (void)setresgid((Gid_t)new_gid, (Gid_t)-1, (Gid_t) -1); |
79072805 | 2893 | #else |
985213f2 AB |
2894 | if (new_gid == PerlProc_getegid()) /* special case $( = $) */ |
2895 | (void)PerlProc_setgid(new_gid); | |
748a9306 | 2896 | else { |
cea2e8a9 | 2897 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2898 | } |
79072805 LW |
2899 | #endif |
2900 | #endif | |
85e6fe83 | 2901 | #endif |
79072805 | 2902 | break; |
985213f2 | 2903 | } |
79072805 | 2904 | case ')': |
985213f2 AB |
2905 | { |
2906 | UV new_egid; | |
5cd24f17 | 2907 | #ifdef HAS_SETGROUPS |
2908 | { | |
b83604b4 | 2909 | const char *p = SvPV_const(sv, len); |
757f63d8 | 2910 | Groups_t *gary = NULL; |
fb4089e0 | 2911 | #ifdef _SC_NGROUPS_MAX |
2912 | int maxgrp = sysconf(_SC_NGROUPS_MAX); | |
2913 | ||
2914 | if (maxgrp < 0) | |
2915 | maxgrp = NGROUPS; | |
2916 | #else | |
2917 | int maxgrp = NGROUPS; | |
2918 | #endif | |
757f63d8 SP |
2919 | |
2920 | while (isSPACE(*p)) | |
2921 | ++p; | |
985213f2 | 2922 | new_egid = Atol(p); |
fb4089e0 | 2923 | for (i = 0; i < maxgrp; ++i) { |
757f63d8 SP |
2924 | while (*p && !isSPACE(*p)) |
2925 | ++p; | |
2926 | while (isSPACE(*p)) | |
2927 | ++p; | |
2928 | if (!*p) | |
2929 | break; | |
2930 | if(!gary) | |
2931 | Newx(gary, i + 1, Groups_t); | |
2932 | else | |
2933 | Renew(gary, i + 1, Groups_t); | |
2934 | gary[i] = Atol(p); | |
2935 | } | |
2936 | if (i) | |
2937 | (void)setgroups(i, gary); | |
f5a63d97 | 2938 | Safefree(gary); |
5cd24f17 | 2939 | } |
2940 | #else /* HAS_SETGROUPS */ | |
985213f2 | 2941 | new_egid = SvIV(sv); |
5cd24f17 | 2942 | #endif /* HAS_SETGROUPS */ |
985213f2 | 2943 | PL_delaymagic_egid = new_egid; |
3280af22 NIS |
2944 | if (PL_delaymagic) { |
2945 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2946 | break; /* don't do magic till later */ |
2947 | } | |
2948 | #ifdef HAS_SETEGID | |
985213f2 | 2949 | (void)setegid((Gid_t)new_egid); |
79072805 LW |
2950 | #else |
2951 | #ifdef HAS_SETREGID | |
985213f2 | 2952 | (void)setregid((Gid_t)-1, (Gid_t)new_egid); |
85e6fe83 LW |
2953 | #else |
2954 | #ifdef HAS_SETRESGID | |
985213f2 | 2955 | (void)setresgid((Gid_t)-1, (Gid_t)new_egid, (Gid_t)-1); |
79072805 | 2956 | #else |
985213f2 AB |
2957 | if (new_egid == PerlProc_getgid()) /* special case $) = $( */ |
2958 | (void)PerlProc_setgid(new_egid); | |
748a9306 | 2959 | else { |
cea2e8a9 | 2960 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2961 | } |
79072805 LW |
2962 | #endif |
2963 | #endif | |
85e6fe83 | 2964 | #endif |
79072805 | 2965 | break; |
985213f2 | 2966 | } |
79072805 | 2967 | case ':': |
2d8e6c8d | 2968 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2969 | break; |
9cdac2a2 FC |
2970 | case '$': /* $$ */ |
2971 | /* Store the pid in mg->mg_obj so we can tell when a fork has | |
2972 | occurred. mg->mg_obj points to *$ by default, so clear it. */ | |
2973 | if (isGV(mg->mg_obj)) { | |
2974 | if (mg->mg_flags & MGf_REFCOUNTED) /* probably never true */ | |
2975 | SvREFCNT_dec(mg->mg_obj); | |
2976 | mg->mg_flags |= MGf_REFCOUNTED; | |
2977 | mg->mg_obj = newSViv((IV)PerlProc_getpid()); | |
2978 | } | |
2979 | else sv_setiv(mg->mg_obj, (IV)PerlProc_getpid()); | |
2980 | break; | |
79072805 | 2981 | case '0': |
e2975953 | 2982 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2983 | #ifdef HAS_SETPROCTITLE |
2984 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2985 | * show a string from the process struct and provide | |
2986 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2987 | if (PL_origalen != 1) { |
b83604b4 | 2988 | s = SvPV_const(sv, len); |
98b76f99 | 2989 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2990 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2991 | * but not the "(perl) suffix from the ps(1) |
2992 | * output, because that's what ps(1) shows if the | |
2993 | * argv[] is modified. */ | |
6f2ad931 | 2994 | setproctitle("-%s", s); |
9aad2c0e | 2995 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2996 | /* This doesn't really work if you assume that |
2997 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2998 | * because in ps(1) output the result will be like | |
2999 | * sprintf("perl: %s (perl)", s) | |
3000 | * I guess this is a security feature: | |
3001 | * one (a user process) cannot get rid of the original name. | |
3002 | * --jhi */ | |
3003 | setproctitle("%s", s); | |
3004 | # endif | |
3005 | } | |
9d3968b2 | 3006 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 3007 | if (PL_origalen != 1) { |
17aa7f3d | 3008 | union pstun un; |
b83604b4 | 3009 | s = SvPV_const(sv, len); |
6867be6d | 3010 | un.pst_command = (char *)s; |
17aa7f3d JH |
3011 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
3012 | } | |
9d3968b2 | 3013 | #else |
2d2af554 GA |
3014 | if (PL_origalen > 1) { |
3015 | /* PL_origalen is set in perl_parse(). */ | |
3016 | s = SvPV_force(sv,len); | |
3017 | if (len >= (STRLEN)PL_origalen-1) { | |
3018 | /* Longer than original, will be truncated. We assume that | |
3019 | * PL_origalen bytes are available. */ | |
3020 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
3021 | } | |
3022 | else { | |
3023 | /* Shorter than original, will be padded. */ | |
235ac35d | 3024 | #ifdef PERL_DARWIN |
60777a0d JH |
3025 | /* Special case for Mac OS X: see [perl #38868] */ |
3026 | const int pad = 0; | |
235ac35d | 3027 | #else |
8a89a4f1 MB |
3028 | /* Is the space counterintuitive? Yes. |
3029 | * (You were expecting \0?) | |
3030 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
3031 | * --jhi */ | |
60777a0d | 3032 | const int pad = ' '; |
235ac35d | 3033 | #endif |
60777a0d JH |
3034 | Copy(s, PL_origargv[0], len, char); |
3035 | PL_origargv[0][len] = 0; | |
3036 | memset(PL_origargv[0] + len + 1, | |
3037 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
3038 | } |
3039 | PL_origargv[0][PL_origalen-1] = 0; | |
3040 | for (i = 1; i < PL_origargc; i++) | |
3041 | PL_origargv[i] = 0; | |
7636ea95 AB |
3042 | #ifdef HAS_PRCTL_SET_NAME |
3043 | /* Set the legacy process name in addition to the POSIX name on Linux */ | |
3044 | if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) { | |
3045 | /* diag_listed_as: SKIPME */ | |
3046 | Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno)); | |
3047 | } | |
3048 | #endif | |
79072805 | 3049 | } |
9d3968b2 | 3050 | #endif |
e2975953 | 3051 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 LW |
3052 | break; |
3053 | } | |
3054 | return 0; | |
3055 | } | |
3056 | ||
3057 | I32 | |
84c7b88c BF |
3058 | Perl_whichsig_sv(pTHX_ SV *sigsv) |
3059 | { | |
3060 | const char *sigpv; | |
3061 | STRLEN siglen; | |
3062 | PERL_ARGS_ASSERT_WHICHSIG_SV; | |
3063 | PERL_UNUSED_CONTEXT; | |
3064 | sigpv = SvPV_const(sigsv, siglen); | |
3065 | return whichsig_pvn(sigpv, siglen); | |
3066 | } | |
3067 | ||
3068 | I32 | |
3069 | Perl_whichsig_pv(pTHX_ const char *sig) | |
3070 | { | |
3071 | PERL_ARGS_ASSERT_WHICHSIG_PV; | |
3072 | PERL_UNUSED_CONTEXT; | |
3073 | return whichsig_pvn(sig, strlen(sig)); | |
3074 | } | |
3075 | ||
3076 | I32 | |
3077 | Perl_whichsig_pvn(pTHX_ const char *sig, STRLEN len) | |
79072805 | 3078 | { |
eb578fdb | 3079 | char* const* sigv; |
7918f24d | 3080 | |
84c7b88c | 3081 | PERL_ARGS_ASSERT_WHICHSIG_PVN; |
96a5add6 | 3082 | PERL_UNUSED_CONTEXT; |
79072805 | 3083 | |
aadb217d | 3084 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
84c7b88c | 3085 | if (strlen(*sigv) == len && memEQ(sig,*sigv, len)) |
aadb217d | 3086 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 | 3087 | #ifdef SIGCLD |
84c7b88c | 3088 | if (memEQs(sig, len, "CHLD")) |
79072805 LW |
3089 | return SIGCLD; |
3090 | #endif | |
3091 | #ifdef SIGCHLD | |
84c7b88c | 3092 | if (memEQs(sig, len, "CLD")) |
79072805 LW |
3093 | return SIGCHLD; |
3094 | #endif | |
7f1236c0 | 3095 | return -1; |
79072805 LW |
3096 | } |
3097 | ||
ecfc5424 | 3098 | Signal_t |
1e82f5a6 | 3099 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3100 | Perl_sighandler(int sig, siginfo_t *sip, void *uap) |
1e82f5a6 SH |
3101 | #else |
3102 | Perl_sighandler(int sig) | |
3103 | #endif | |
79072805 | 3104 | { |
1018e26f NIS |
3105 | #ifdef PERL_GET_SIG_CONTEXT |
3106 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 3107 | #else |
cea2e8a9 | 3108 | dTHX; |
71d280e3 | 3109 | #endif |
79072805 | 3110 | dSP; |
a0714e2c SS |
3111 | GV *gv = NULL; |
3112 | SV *sv = NULL; | |
8772537c | 3113 | SV * const tSv = PL_Sv; |
601f1833 | 3114 | CV *cv = NULL; |
533c011a | 3115 | OP *myop = PL_op; |
84902520 | 3116 | U32 flags = 0; |
8772537c | 3117 | XPV * const tXpv = PL_Xpv; |
0c4d3b5e | 3118 | I32 old_ss_ix = PL_savestack_ix; |
100c03aa | 3119 | SV *errsv_save = NULL; |
71d280e3 | 3120 | |
84902520 | 3121 | |
727405f8 | 3122 | if (!PL_psig_ptr[sig]) { |
99ef548b | 3123 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
3124 | PL_sig_name[sig]); |
3125 | exit(sig); | |
3126 | } | |
ff0cee69 | 3127 | |
a0d63a7b DM |
3128 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3129 | /* Max number of items pushed there is 3*n or 4. We cannot fix | |
3130 | infinity, so we fix 4 (in fact 5): */ | |
3131 | if (PL_savestack_ix + 15 <= PL_savestack_max) { | |
3132 | flags |= 1; | |
3133 | PL_savestack_ix += 5; /* Protect save in progress. */ | |
3134 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, NULL); | |
3135 | } | |
84902520 | 3136 | } |
84902520 | 3137 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ea726b52 | 3138 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig]))) |
8772537c AL |
3139 | || SvTYPE(cv) != SVt_PVCV) { |
3140 | HV *st; | |
f2c0649b | 3141 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 3142 | } |
84902520 | 3143 | |
a0d0e21e | 3144 | if (!cv || !CvROOT(cv)) { |
a2a5de95 NC |
3145 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
3146 | PL_sig_name[sig], (gv ? GvENAME(gv) | |
3147 | : ((cv && CvGV(cv)) | |
3148 | ? GvENAME(CvGV(cv)) | |
3149 | : "__ANON__"))); | |
00d579c5 | 3150 | goto cleanup; |
79072805 LW |
3151 | } |
3152 | ||
0c4d3b5e DM |
3153 | sv = PL_psig_name[sig] |
3154 | ? SvREFCNT_inc_NN(PL_psig_name[sig]) | |
3155 | : newSVpv(PL_sig_name[sig],0); | |
72048cfe | 3156 | flags |= 8; |
0c4d3b5e DM |
3157 | SAVEFREESV(sv); |
3158 | ||
a0d63a7b DM |
3159 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3160 | /* make sure our assumption about the size of the SAVEs are correct: | |
3161 | * 3 for SAVEDESTRUCTOR_X, 2 for SAVEFREESV */ | |
3162 | assert(old_ss_ix + 2 + ((flags & 1) ? 3+5 : 0) == PL_savestack_ix); | |
3163 | } | |
e336de0d | 3164 | |
e788e7d3 | 3165 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 3166 | PUSHMARK(SP); |
79072805 | 3167 | PUSHs(sv); |
8aad04aa JH |
3168 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
3169 | { | |
3170 | struct sigaction oact; | |
3171 | ||
3172 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
3173 | if (sip) { |
3174 | HV *sih = newHV(); | |
ad64d0ec | 3175 | SV *rv = newRV_noinc(MUTABLE_SV(sih)); |
8aad04aa JH |
3176 | /* The siginfo fields signo, code, errno, pid, uid, |
3177 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
3178 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
3179 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 3180 | #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 |
3181 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
3182 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
3183 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
3184 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
3185 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
3186 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 3187 | #endif |
8aad04aa | 3188 | EXTEND(SP, 2); |
ad64d0ec | 3189 | PUSHs(rv); |
22f1178f | 3190 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 3191 | } |
b4552a27 | 3192 | |
8aad04aa JH |
3193 | } |
3194 | } | |
3195 | #endif | |
79072805 | 3196 | PUTBACK; |
a0d0e21e | 3197 | |
100c03aa JL |
3198 | errsv_save = newSVsv(ERRSV); |
3199 | ||
ad64d0ec | 3200 | call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL); |
79072805 | 3201 | |
d3acc0f7 | 3202 | POPSTACK; |
1b266415 | 3203 | if (SvTRUE(ERRSV)) { |
100c03aa | 3204 | SvREFCNT_dec(errsv_save); |
c22d665b | 3205 | #ifndef PERL_MICRO |
1b266415 NIS |
3206 | /* Handler "died", for example to get out of a restart-able read(). |
3207 | * Before we re-do that on its behalf re-enable the signal which was | |
3208 | * blocked by the system when we entered. | |
3209 | */ | |
c22d665b | 3210 | #ifdef HAS_SIGPROCMASK |
d488af49 | 3211 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3212 | if (sip || uap) |
c22d665b LT |
3213 | #endif |
3214 | { | |
3215 | sigset_t set; | |
3216 | sigemptyset(&set); | |
3217 | sigaddset(&set,sig); | |
3218 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
3219 | } | |
3220 | #else | |
1b266415 NIS |
3221 | /* Not clear if this will work */ |
3222 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 3223 | (void)rsignal(sig, PL_csighandlerp); |
c22d665b LT |
3224 | #endif |
3225 | #endif /* !PERL_MICRO */ | |
c5df3096 | 3226 | die_sv(ERRSV); |
1b266415 | 3227 | } |
100c03aa JL |
3228 | else { |
3229 | sv_setsv(ERRSV, errsv_save); | |
3230 | SvREFCNT_dec(errsv_save); | |
3231 | } | |
3232 | ||
00d579c5 | 3233 | cleanup: |
0c4d3b5e DM |
3234 | /* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */ |
3235 | PL_savestack_ix = old_ss_ix; | |
72048cfe | 3236 | if (flags & 8) |
84902520 | 3237 | SvREFCNT_dec(sv); |
533c011a | 3238 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 3239 | |
3280af22 NIS |
3240 | PL_Sv = tSv; /* Restore global temporaries. */ |
3241 | PL_Xpv = tXpv; | |
53bb94e2 | 3242 | return; |
79072805 | 3243 | } |
4e35701f NIS |
3244 | |
3245 | ||
51371543 | 3246 | static void |
8772537c | 3247 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3248 | { |
97aff369 | 3249 | dVAR; |
8772537c AL |
3250 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3251 | SV* const sv = mgs->mgs_sv; | |
150b625d | 3252 | bool bumped; |
51371543 GS |
3253 | |
3254 | if (!sv) | |
3255 | return; | |
3256 | ||
4bac9ae4 CS |
3257 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
3258 | SvTEMP_off(sv); /* if it's still magical, this value isn't temporary */ | |
f8c7b90f | 3259 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3260 | /* While magic was saved (and off) sv_setsv may well have seen |
3261 | this SV as a prime candidate for COW. */ | |
3262 | if (SvIsCOW(sv)) | |
e424a81e | 3263 | sv_force_normal_flags(sv, 0); |
f9701176 | 3264 | #endif |
f9c6fee5 CS |
3265 | if (mgs->mgs_readonly) |
3266 | SvREADONLY_on(sv); | |
3267 | if (mgs->mgs_magical) | |
3268 | SvFLAGS(sv) |= mgs->mgs_magical; | |
51371543 GS |
3269 | else |
3270 | mg_magical(sv); | |
51371543 GS |
3271 | } |
3272 | ||
150b625d | 3273 | bumped = mgs->mgs_bumped; |
51371543 GS |
3274 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
3275 | ||
3276 | /* If we're still on top of the stack, pop us off. (That condition | |
3277 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3278 | * if it's being called via leave_scope.) | |
3279 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3280 | * may leave alloc gunk on the savestack, and some code | |
3281 | * (e.g. sighandler) doesn't expect that... | |
3282 | */ | |
3283 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3284 | { | |
1be36ce0 NC |
3285 | UV popval = SSPOPUV; |
3286 | assert(popval == SAVEt_DESTRUCTOR_X); | |
51371543 | 3287 | PL_savestack_ix -= 2; |
1be36ce0 NC |
3288 | popval = SSPOPUV; |
3289 | assert((popval & SAVE_MASK) == SAVEt_ALLOC); | |
3290 | PL_savestack_ix -= popval >> SAVE_TIGHT_SHIFT; | |
51371543 | 3291 | } |
150b625d DM |
3292 | if (bumped) { |
3293 | if (SvREFCNT(sv) == 1) { | |
3294 | /* We hold the last reference to this SV, which implies that the | |
3295 | SV was deleted as a side effect of the routines we called. | |
3296 | So artificially keep it alive a bit longer. | |
3297 | We avoid turning on the TEMP flag, which can cause the SV's | |
3298 | buffer to get stolen (and maybe other stuff). */ | |
150b625d | 3299 | sv_2mortal(sv); |
4bac9ae4 | 3300 | SvTEMP_off(sv); |
8985fe98 | 3301 | } |
150b625d DM |
3302 | else |
3303 | SvREFCNT_dec(sv); /* undo the inc in S_save_magic() */ | |
8985fe98 | 3304 | } |
51371543 GS |
3305 | } |
3306 | ||
0c4d3b5e DM |
3307 | /* clean up the mess created by Perl_sighandler(). |
3308 | * Note that this is only called during an exit in a signal handler; | |
3309 | * a die is trapped by the call_sv() and the SAVEDESTRUCTOR_X manually | |
9a7f166c | 3310 | * skipped over. */ |
0c4d3b5e | 3311 | |
51371543 | 3312 | static void |
8772537c | 3313 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3314 | { |
27da23d5 | 3315 | dVAR; |
0c4d3b5e | 3316 | PERL_UNUSED_ARG(p); |
7918f24d | 3317 | |
0c4d3b5e | 3318 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
51371543 | 3319 | } |
1018e26f | 3320 | |
66610fdd | 3321 | /* |
b3ca2e83 NC |
3322 | =for apidoc magic_sethint |
3323 | ||
3324 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3325 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3326 | anything that would need a deep copy. Maybe we should warn if we find a | |
3327 | reference. | |
b3ca2e83 NC |
3328 | |
3329 | =cut | |
3330 | */ | |
3331 | int | |
3332 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3333 | { | |
3334 | dVAR; | |
ad64d0ec | 3335 | SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr) |
59cd0e26 | 3336 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3337 | |
7918f24d NC |
3338 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3339 | ||
e6e3e454 NC |
3340 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3341 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3342 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3343 | or take other more complex action. */ | |
3344 | ||
5b9c0671 NC |
3345 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3346 | Doing this here saves a lot of doing it manually in perl code (and | |
3347 | forgetting to do it, and consequent subtle errors. */ | |
3348 | PL_hints |= HINT_LOCALIZE_HH; | |
20439bc7 Z |
3349 | CopHINTHASH_set(&PL_compiling, |
3350 | cophh_store_sv(CopHINTHASH_get(&PL_compiling), key, 0, sv, 0)); | |
b3ca2e83 NC |
3351 | return 0; |
3352 | } | |
3353 | ||
3354 | /* | |
f175cff5 | 3355 | =for apidoc magic_clearhint |
b3ca2e83 | 3356 | |
c28fe1ec NC |
3357 | Triggered by a delete from %^H, records the key to |
3358 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3359 | |
3360 | =cut | |
3361 | */ | |
3362 | int | |
3363 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3364 | { | |
3365 | dVAR; | |
7918f24d NC |
3366 | |
3367 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; | |
f5a63d97 AL |
3368 | PERL_UNUSED_ARG(sv); |
3369 | ||
5b9c0671 | 3370 | PL_hints |= HINT_LOCALIZE_HH; |
20439bc7 | 3371 | CopHINTHASH_set(&PL_compiling, |
e3352591 FC |
3372 | mg->mg_len == HEf_SVKEY |
3373 | ? cophh_delete_sv(CopHINTHASH_get(&PL_compiling), | |
3374 | MUTABLE_SV(mg->mg_ptr), 0, 0) | |
3375 | : cophh_delete_pvn(CopHINTHASH_get(&PL_compiling), | |
3376 | mg->mg_ptr, mg->mg_len, 0, 0)); | |
b3ca2e83 NC |
3377 | return 0; |
3378 | } | |
3379 | ||
3380 | /* | |
f747ebd6 Z |
3381 | =for apidoc magic_clearhints |
3382 | ||
3383 | Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>. | |
3384 | ||
3385 | =cut | |
3386 | */ | |
3387 | int | |
3388 | Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg) | |
3389 | { | |
3390 | PERL_ARGS_ASSERT_MAGIC_CLEARHINTS; | |
3391 | PERL_UNUSED_ARG(sv); | |
3392 | PERL_UNUSED_ARG(mg); | |
20439bc7 Z |
3393 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
3394 | CopHINTHASH_set(&PL_compiling, cophh_new_empty()); | |
f747ebd6 Z |
3395 | return 0; |
3396 | } | |
3397 | ||
09fb282d FC |
3398 | int |
3399 | Perl_magic_copycallchecker(pTHX_ SV *sv, MAGIC *mg, SV *nsv, | |
3400 | const char *name, I32 namlen) | |
3401 | { | |
3402 | MAGIC *nmg; | |
3403 | ||
3404 | PERL_ARGS_ASSERT_MAGIC_COPYCALLCHECKER; | |
4f8dbb2d | 3405 | PERL_UNUSED_ARG(sv); |
09fb282d FC |
3406 | PERL_UNUSED_ARG(name); |
3407 | PERL_UNUSED_ARG(namlen); | |
3408 | ||
3409 | sv_magic(nsv, &PL_sv_undef, mg->mg_type, NULL, 0); | |
3410 | nmg = mg_find(nsv, mg->mg_type); | |
3411 | if (nmg->mg_flags & MGf_REFCOUNTED) SvREFCNT_dec(nmg->mg_obj); | |
3412 | nmg->mg_ptr = mg->mg_ptr; | |
3413 | nmg->mg_obj = SvREFCNT_inc_simple(mg->mg_obj); | |
3414 | nmg->mg_flags |= MGf_REFCOUNTED; | |
3415 | return 1; | |
3416 | } | |
3417 | ||
f747ebd6 | 3418 | /* |
66610fdd RGS |
3419 | * Local variables: |
3420 | * c-indentation-style: bsd | |
3421 | * c-basic-offset: 4 | |
14d04a33 | 3422 | * indent-tabs-mode: nil |
66610fdd RGS |
3423 | * End: |
3424 | * | |
14d04a33 | 3425 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3426 | */ |