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 | |
ff44333e | 93 | S_save_magic_flags(pTHX_ I32 mgs_ix, SV *sv, U32 flags) |
c07a80fd | 94 | { |
97aff369 | 95 | dVAR; |
455ece5e | 96 | MGS* mgs; |
150b625d | 97 | bool bumped = FALSE; |
7918f24d | 98 | |
ff44333e | 99 | PERL_ARGS_ASSERT_SAVE_MAGIC_FLAGS; |
7918f24d | 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 | |
8772537c | 114 | SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
115 | |
116 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 117 | mgs->mgs_sv = sv; |
f9c6fee5 | 118 | mgs->mgs_magical = SvMAGICAL(sv); |
46959f1c | 119 | mgs->mgs_readonly = SvREADONLY(sv) != 0; |
455ece5e | 120 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
150b625d | 121 | mgs->mgs_bumped = bumped; |
c07a80fd | 122 | |
ff44333e | 123 | SvFLAGS(sv) &= ~flags; |
3805b5fb | 124 | SvREADONLY_off(sv); |
c07a80fd | 125 | } |
126 | ||
ff44333e FC |
127 | #define save_magic(a,b) save_magic_flags(a,b,SVs_GMG|SVs_SMG|SVs_RMG) |
128 | ||
954c1994 GS |
129 | /* |
130 | =for apidoc mg_magical | |
131 | ||
132 | Turns on the magical status of an SV. See C<sv_magic>. | |
133 | ||
134 | =cut | |
135 | */ | |
136 | ||
8990e307 | 137 | void |
864dbfa3 | 138 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 | 139 | { |
e1ec3a88 | 140 | const MAGIC* mg; |
7918f24d | 141 | PERL_ARGS_ASSERT_MG_MAGICAL; |
96a5add6 | 142 | PERL_UNUSED_CONTEXT; |
f9c6fee5 CS |
143 | |
144 | SvMAGICAL_off(sv); | |
218787bd | 145 | if ((mg = SvMAGIC(sv))) { |
218787bd VP |
146 | do { |
147 | const MGVTBL* const vtbl = mg->mg_virtual; | |
148 | if (vtbl) { | |
149 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) | |
150 | SvGMAGICAL_on(sv); | |
151 | if (vtbl->svt_set) | |
152 | SvSMAGICAL_on(sv); | |
153 | if (vtbl->svt_clear) | |
154 | SvRMAGICAL_on(sv); | |
155 | } | |
156 | } while ((mg = mg->mg_moremagic)); | |
157 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG))) | |
158 | SvRMAGICAL_on(sv); | |
8990e307 LW |
159 | } |
160 | } | |
161 | ||
954c1994 GS |
162 | /* |
163 | =for apidoc mg_get | |
164 | ||
4b1e7f06 DD |
165 | Do magic before a value is retrieved from the SV. The type of SV must |
166 | be >= SVt_PVMG. See C<sv_magic>. | |
954c1994 GS |
167 | |
168 | =cut | |
169 | */ | |
170 | ||
79072805 | 171 | int |
864dbfa3 | 172 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 173 | { |
97aff369 | 174 | dVAR; |
35a4481c | 175 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
a9844598 | 176 | bool saved = FALSE; |
f9c6fee5 | 177 | bool have_new = 0; |
ff76feab | 178 | MAGIC *newmg, *head, *cur, *mg; |
6683b158 | 179 | |
7918f24d NC |
180 | PERL_ARGS_ASSERT_MG_GET; |
181 | ||
407287f9 FC |
182 | if (PL_localizing == 1 && sv == DEFSV) return 0; |
183 | ||
ff76feab AMS |
184 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
185 | list of magic. svt_get() may delete the current entry, add new | |
186 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
187 | ||
188 | newmg = cur = head = mg = SvMAGIC(sv); | |
189 | while (mg) { | |
35a4481c | 190 | const MGVTBL * const vtbl = mg->mg_virtual; |
f9c6fee5 | 191 | MAGIC * const nextmg = mg->mg_moremagic; /* it may delete itself */ |
ff76feab | 192 | |
2b260de0 | 193 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
a9844598 CS |
194 | |
195 | /* taint's mg get is so dumb it doesn't need flag saving */ | |
196 | if (!saved && mg->mg_type != PERL_MAGIC_taint) { | |
197 | save_magic(mgs_ix, sv); | |
198 | saved = TRUE; | |
199 | } | |
200 | ||
16c91539 | 201 | vtbl->svt_get(aTHX_ sv, mg); |
b77f7d40 | 202 | |
58f82c5c DM |
203 | /* guard against magic having been deleted - eg FETCH calling |
204 | * untie */ | |
f9c6fee5 CS |
205 | if (!SvMAGIC(sv)) { |
206 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ | |
58f82c5c | 207 | break; |
f9c6fee5 | 208 | } |
b77f7d40 | 209 | |
f9c6fee5 | 210 | /* recalculate flags if this entry was deleted. */ |
ff76feab | 211 | if (mg->mg_flags & MGf_GSKIP) |
f9c6fee5 | 212 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; |
a0d0e21e | 213 | } |
7d1328bb FC |
214 | else if (vtbl == &PL_vtbl_utf8) { |
215 | /* get-magic can reallocate the PV */ | |
216 | magic_setutf8(sv, mg); | |
217 | } | |
ff76feab | 218 | |
f9c6fee5 | 219 | mg = nextmg; |
ff76feab | 220 | |
0723351e | 221 | if (have_new) { |
ff76feab AMS |
222 | /* Have we finished with the new entries we saw? Start again |
223 | where we left off (unless there are more new entries). */ | |
224 | if (mg == head) { | |
0723351e | 225 | have_new = 0; |
ff76feab AMS |
226 | mg = cur; |
227 | head = newmg; | |
228 | } | |
229 | } | |
230 | ||
231 | /* Were any new entries added? */ | |
0723351e NC |
232 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
233 | have_new = 1; | |
ff76feab AMS |
234 | cur = mg; |
235 | mg = newmg; | |
f9c6fee5 | 236 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ |
760ac839 | 237 | } |
79072805 | 238 | } |
463ee0b2 | 239 | |
a9844598 CS |
240 | if (saved) |
241 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); | |
242 | ||
79072805 LW |
243 | return 0; |
244 | } | |
245 | ||
954c1994 GS |
246 | /* |
247 | =for apidoc mg_set | |
248 | ||
249 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
250 | ||
251 | =cut | |
252 | */ | |
253 | ||
79072805 | 254 | int |
864dbfa3 | 255 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 256 | { |
97aff369 | 257 | dVAR; |
35a4481c | 258 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 259 | MAGIC* mg; |
463ee0b2 LW |
260 | MAGIC* nextmg; |
261 | ||
7918f24d NC |
262 | PERL_ARGS_ASSERT_MG_SET; |
263 | ||
b5ed8c44 FC |
264 | if (PL_localizing == 2 && sv == DEFSV) return 0; |
265 | ||
ff44333e | 266 | save_magic_flags(mgs_ix, sv, SVs_GMG|SVs_SMG); /* leave SVs_RMG on */ |
463ee0b2 LW |
267 | |
268 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 269 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 270 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
271 | if (mg->mg_flags & MGf_GSKIP) { |
272 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
f9c6fee5 | 273 | (SSPTR(mgs_ix, MGS*))->mgs_magical = 0; |
a0d0e21e | 274 | } |
e0a73de4 | 275 | if (PL_localizing == 2 |
b5ed8c44 | 276 | && PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
e7cbf6c6 | 277 | continue; |
2b260de0 | 278 | if (vtbl && vtbl->svt_set) |
16c91539 | 279 | vtbl->svt_set(aTHX_ sv, mg); |
79072805 | 280 | } |
463ee0b2 | 281 | |
8772537c | 282 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
283 | return 0; |
284 | } | |
285 | ||
954c1994 GS |
286 | /* |
287 | =for apidoc mg_length | |
288 | ||
d4e99c76 | 289 | Reports on the SV's length in bytes, calling length magic if available, |
bd8446cf FC |
290 | but does not set the UTF8 flag on the sv. It will fall back to 'get' |
291 | magic if there is no 'length' magic, but with no indication as to | |
292 | whether it called 'get' magic. It assumes the sv is a PVMG or | |
293 | higher. Use sv_len() instead. | |
954c1994 GS |
294 | |
295 | =cut | |
296 | */ | |
297 | ||
79072805 | 298 | U32 |
864dbfa3 | 299 | Perl_mg_length(pTHX_ SV *sv) |
79072805 | 300 | { |
97aff369 | 301 | dVAR; |
79072805 | 302 | MAGIC* mg; |
463ee0b2 | 303 | STRLEN len; |
463ee0b2 | 304 | |
7918f24d NC |
305 | PERL_ARGS_ASSERT_MG_LENGTH; |
306 | ||
79072805 | 307 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 308 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 309 | if (vtbl && vtbl->svt_len) { |
35a4481c | 310 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 311 | save_magic(mgs_ix, sv); |
a0d0e21e | 312 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 313 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 314 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
315 | return len; |
316 | } | |
317 | } | |
318 | ||
bd8446cf | 319 | (void)SvPV_const(sv, len); |
463ee0b2 | 320 | return len; |
79072805 LW |
321 | } |
322 | ||
8fb26106 | 323 | I32 |
864dbfa3 | 324 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
325 | { |
326 | MAGIC* mg; | |
ac27b0f5 | 327 | |
7918f24d NC |
328 | PERL_ARGS_ASSERT_MG_SIZE; |
329 | ||
93965878 | 330 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 331 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 332 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
333 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
334 | I32 len; | |
455ece5e | 335 | save_magic(mgs_ix, sv); |
93965878 | 336 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 337 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 338 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
339 | return len; |
340 | } | |
341 | } | |
342 | ||
343 | switch(SvTYPE(sv)) { | |
344 | case SVt_PVAV: | |
502c6561 | 345 | return AvFILLp((const AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
346 | case SVt_PVHV: |
347 | /* FIXME */ | |
348 | default: | |
cea2e8a9 | 349 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
350 | break; |
351 | } | |
352 | return 0; | |
353 | } | |
354 | ||
954c1994 GS |
355 | /* |
356 | =for apidoc mg_clear | |
357 | ||
358 | Clear something magical that the SV represents. See C<sv_magic>. | |
359 | ||
360 | =cut | |
361 | */ | |
362 | ||
79072805 | 363 | int |
864dbfa3 | 364 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 365 | { |
35a4481c | 366 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 367 | MAGIC* mg; |
8ac77ac9 | 368 | MAGIC *nextmg; |
463ee0b2 | 369 | |
7918f24d NC |
370 | PERL_ARGS_ASSERT_MG_CLEAR; |
371 | ||
455ece5e | 372 | save_magic(mgs_ix, sv); |
463ee0b2 | 373 | |
8ac77ac9 | 374 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
35a4481c | 375 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 376 | /* omit GSKIP -- never set here */ |
727405f8 | 377 | |
8ac77ac9 NC |
378 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
379 | ||
2b260de0 | 380 | if (vtbl && vtbl->svt_clear) |
16c91539 | 381 | vtbl->svt_clear(aTHX_ sv, mg); |
79072805 | 382 | } |
463ee0b2 | 383 | |
8772537c | 384 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
385 | return 0; |
386 | } | |
387 | ||
ed624ca8 | 388 | static MAGIC* |
39de7f53 FR |
389 | S_mg_findext_flags(pTHX_ const SV *sv, int type, const MGVTBL *vtbl, U32 flags) |
390 | { | |
391 | PERL_UNUSED_CONTEXT; | |
392 | ||
393 | assert(flags <= 1); | |
394 | ||
395 | if (sv) { | |
396 | MAGIC *mg; | |
397 | ||
7db6405c FC |
398 | assert(!(SvTYPE(sv) == SVt_PVAV && AvPAD_NAMELIST(sv))); |
399 | ||
39de7f53 FR |
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 | ||
96c2a8ff FC |
439 | MAGIC * |
440 | Perl_mg_find_mglob(pTHX_ SV *sv) | |
441 | { | |
442 | PERL_ARGS_ASSERT_MG_FIND_MGLOB; | |
443 | if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y') { | |
444 | /* This sv is only a delegate. //g magic must be attached to | |
445 | its target. */ | |
446 | vivify_defelem(sv); | |
447 | sv = LvTARG(sv); | |
448 | } | |
449 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
450 | return S_mg_findext_flags(aTHX_ sv, PERL_MAGIC_regex_global, 0, 0); | |
451 | return NULL; | |
452 | } | |
453 | ||
954c1994 GS |
454 | /* |
455 | =for apidoc mg_copy | |
456 | ||
457 | Copies the magic from one SV to another. See C<sv_magic>. | |
458 | ||
459 | =cut | |
460 | */ | |
461 | ||
79072805 | 462 | int |
864dbfa3 | 463 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 464 | { |
463ee0b2 | 465 | int count = 0; |
79072805 | 466 | MAGIC* mg; |
7918f24d NC |
467 | |
468 | PERL_ARGS_ASSERT_MG_COPY; | |
469 | ||
463ee0b2 | 470 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 471 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 | 472 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
16c91539 | 473 | count += vtbl->svt_copy(aTHX_ sv, mg, nsv, key, klen); |
68795e93 | 474 | } |
823a54a3 AL |
475 | else { |
476 | const char type = mg->mg_type; | |
1e73acc8 | 477 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
478 | sv_magic(nsv, |
479 | (type == PERL_MAGIC_tied) | |
480 | ? SvTIED_obj(sv, mg) | |
481 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
482 | ? sv | |
483 | : mg->mg_obj, | |
484 | toLOWER(type), key, klen); | |
485 | count++; | |
486 | } | |
79072805 | 487 | } |
79072805 | 488 | } |
463ee0b2 | 489 | return count; |
79072805 LW |
490 | } |
491 | ||
954c1994 | 492 | /* |
0cbee0a4 DM |
493 | =for apidoc mg_localize |
494 | ||
9711599e CS |
495 | Copy some of the magic from an existing SV to new localized version of that |
496 | SV. Container magic (eg %ENV, $1, tie) gets copied, value magic doesn't (eg | |
497 | taint, pos). | |
498 | ||
af7df257 | 499 | If setmagic is false then no set magic will be called on the new (empty) SV. |
9711599e CS |
500 | This typically means that assignment will soon follow (e.g. 'local $x = $y'), |
501 | and that will handle the magic. | |
0cbee0a4 DM |
502 | |
503 | =cut | |
504 | */ | |
505 | ||
506 | void | |
af7df257 | 507 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv, bool setmagic) |
0cbee0a4 | 508 | { |
97aff369 | 509 | dVAR; |
0cbee0a4 | 510 | MAGIC *mg; |
7918f24d NC |
511 | |
512 | PERL_ARGS_ASSERT_MG_LOCALIZE; | |
513 | ||
658a9f31 JD |
514 | if (nsv == DEFSV) |
515 | return; | |
516 | ||
0cbee0a4 | 517 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
2b1b43ea | 518 | const MGVTBL* const vtbl = mg->mg_virtual; |
e0a73de4 | 519 | if (PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
0cbee0a4 | 520 | continue; |
0cbee0a4 | 521 | |
a5063e7c | 522 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
16c91539 | 523 | (void)vtbl->svt_local(aTHX_ nsv, mg); |
a5063e7c | 524 | else |
0cbee0a4 DM |
525 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
526 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 527 | |
0cbee0a4 | 528 | /* container types should remain read-only across localization */ |
9ff3e6d8 | 529 | SvFLAGS(nsv) |= SvREADONLY(sv); |
0cbee0a4 DM |
530 | } |
531 | ||
532 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
533 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
af7df257 | 534 | if (setmagic) { |
9711599e CS |
535 | PL_localizing = 1; |
536 | SvSETMAGIC(nsv); | |
537 | PL_localizing = 0; | |
538 | } | |
0cbee0a4 DM |
539 | } |
540 | } | |
541 | ||
d9088386 Z |
542 | #define mg_free_struct(sv, mg) S_mg_free_struct(aTHX_ sv, mg) |
543 | static void | |
544 | S_mg_free_struct(pTHX_ SV *sv, MAGIC *mg) | |
545 | { | |
546 | const MGVTBL* const vtbl = mg->mg_virtual; | |
547 | if (vtbl && vtbl->svt_free) | |
548 | vtbl->svt_free(aTHX_ sv, mg); | |
549 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { | |
550 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) | |
551 | Safefree(mg->mg_ptr); | |
552 | else if (mg->mg_len == HEf_SVKEY) | |
553 | SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr)); | |
554 | } | |
555 | if (mg->mg_flags & MGf_REFCOUNTED) | |
556 | SvREFCNT_dec(mg->mg_obj); | |
557 | Safefree(mg); | |
558 | } | |
559 | ||
0cbee0a4 | 560 | /* |
954c1994 GS |
561 | =for apidoc mg_free |
562 | ||
563 | Free any magic storage used by the SV. See C<sv_magic>. | |
564 | ||
565 | =cut | |
566 | */ | |
567 | ||
79072805 | 568 | int |
864dbfa3 | 569 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
570 | { |
571 | MAGIC* mg; | |
572 | MAGIC* moremagic; | |
7918f24d NC |
573 | |
574 | PERL_ARGS_ASSERT_MG_FREE; | |
575 | ||
79072805 | 576 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
79072805 | 577 | moremagic = mg->mg_moremagic; |
d9088386 | 578 | mg_free_struct(sv, mg); |
c826f41b | 579 | SvMAGIC_set(sv, moremagic); |
79072805 | 580 | } |
b162af07 | 581 | SvMAGIC_set(sv, NULL); |
68f8932e | 582 | SvMAGICAL_off(sv); |
79072805 LW |
583 | return 0; |
584 | } | |
585 | ||
d9088386 Z |
586 | /* |
587 | =for apidoc Am|void|mg_free_type|SV *sv|int how | |
588 | ||
589 | Remove any magic of type I<how> from the SV I<sv>. See L</sv_magic>. | |
590 | ||
591 | =cut | |
592 | */ | |
593 | ||
594 | void | |
595 | Perl_mg_free_type(pTHX_ SV *sv, int how) | |
596 | { | |
597 | MAGIC *mg, *prevmg, *moremg; | |
598 | PERL_ARGS_ASSERT_MG_FREE_TYPE; | |
599 | for (prevmg = NULL, mg = SvMAGIC(sv); mg; prevmg = mg, mg = moremg) { | |
600 | MAGIC *newhead; | |
601 | moremg = mg->mg_moremagic; | |
602 | if (mg->mg_type == how) { | |
603 | /* temporarily move to the head of the magic chain, in case | |
604 | custom free code relies on this historical aspect of mg_free */ | |
605 | if (prevmg) { | |
606 | prevmg->mg_moremagic = moremg; | |
607 | mg->mg_moremagic = SvMAGIC(sv); | |
608 | SvMAGIC_set(sv, mg); | |
609 | } | |
610 | newhead = mg->mg_moremagic; | |
611 | mg_free_struct(sv, mg); | |
612 | SvMAGIC_set(sv, newhead); | |
613 | mg = prevmg; | |
614 | } | |
615 | } | |
616 | mg_magical(sv); | |
617 | } | |
618 | ||
79072805 | 619 | #include <signal.h> |
79072805 | 620 | |
942e002e | 621 | U32 |
864dbfa3 | 622 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 623 | { |
97aff369 | 624 | dVAR; |
8772537c | 625 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 626 | |
7918f24d NC |
627 | PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT; |
628 | ||
0bd48802 | 629 | if (PL_curpm) { |
eb578fdb | 630 | const REGEXP * const rx = PM_GETRE(PL_curpm); |
0bd48802 | 631 | if (rx) { |
a678b0e4 YO |
632 | if (mg->mg_obj) { /* @+ */ |
633 | /* return the number possible */ | |
07bc277f | 634 | return RX_NPARENS(rx); |
a678b0e4 | 635 | } else { /* @- */ |
07bc277f | 636 | I32 paren = RX_LASTPAREN(rx); |
a678b0e4 YO |
637 | |
638 | /* return the last filled */ | |
f46c4081 | 639 | while ( paren >= 0 |
07bc277f NC |
640 | && (RX_OFFS(rx)[paren].start == -1 |
641 | || RX_OFFS(rx)[paren].end == -1) ) | |
f46c4081 | 642 | paren--; |
a678b0e4 YO |
643 | return (U32)paren; |
644 | } | |
0bd48802 | 645 | } |
8f580fb8 | 646 | } |
ac27b0f5 | 647 | |
942e002e | 648 | return (U32)-1; |
6cef1e77 IZ |
649 | } |
650 | ||
6502e081 DM |
651 | /* @-, @+ */ |
652 | ||
6cef1e77 | 653 | int |
864dbfa3 | 654 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 655 | { |
97aff369 | 656 | dVAR; |
7918f24d NC |
657 | |
658 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET; | |
659 | ||
0bd48802 | 660 | if (PL_curpm) { |
eb578fdb | 661 | const REGEXP * const rx = PM_GETRE(PL_curpm); |
0bd48802 | 662 | if (rx) { |
eb578fdb | 663 | const I32 paren = mg->mg_len; |
a10eae29 FC |
664 | SSize_t s; |
665 | SSize_t t; | |
0bd48802 AL |
666 | if (paren < 0) |
667 | return 0; | |
07bc277f NC |
668 | if (paren <= (I32)RX_NPARENS(rx) && |
669 | (s = RX_OFFS(rx)[paren].start) != -1 && | |
670 | (t = RX_OFFS(rx)[paren].end) != -1) | |
0bd48802 | 671 | { |
a10eae29 | 672 | SSize_t i; |
0bd48802 AL |
673 | if (mg->mg_obj) /* @+ */ |
674 | i = t; | |
675 | else /* @- */ | |
676 | i = s; | |
677 | ||
a10eae29 | 678 | if (RX_MATCH_UTF8(rx)) { |
07bc277f | 679 | const char * const b = RX_SUBBEG(rx); |
0bd48802 | 680 | if (b) |
6502e081 DM |
681 | i = RX_SUBCOFFSET(rx) + |
682 | utf8_length((U8*)b, | |
683 | (U8*)(b-RX_SUBOFFSET(rx)+i)); | |
0bd48802 | 684 | } |
727405f8 | 685 | |
a10eae29 | 686 | sv_setuv(sv, i); |
232af1f8 | 687 | return 0; |
1aa99e6b | 688 | } |
0bd48802 | 689 | } |
6cef1e77 | 690 | } |
232af1f8 | 691 | sv_setsv(sv, NULL); |
6cef1e77 IZ |
692 | return 0; |
693 | } | |
694 | ||
6502e081 DM |
695 | /* @-, @+ */ |
696 | ||
e4b89193 | 697 | int |
a29d06ed MG |
698 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
699 | { | |
7918f24d | 700 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET; |
d4c19fe8 AL |
701 | PERL_UNUSED_ARG(sv); |
702 | PERL_UNUSED_ARG(mg); | |
cb077ed2 | 703 | Perl_croak_no_modify(); |
0dbb1585 | 704 | NORETURN_FUNCTION_END; |
a29d06ed MG |
705 | } |
706 | ||
ad3296c6 | 707 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
708 | if (SvPOK(sv)) { \ |
709 | STRLEN len = SvCUR(sv); \ | |
710 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
711 | while (len > 0 && isSPACE(p[len-1])) \ |
712 | --len; \ | |
713 | SvCUR_set(sv, len); \ | |
714 | p[len] = '\0'; \ | |
715 | } \ | |
ad3296c6 SH |
716 | } STMT_END |
717 | ||
8b850bd5 NC |
718 | void |
719 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
720 | { | |
7918f24d NC |
721 | PERL_ARGS_ASSERT_EMULATE_COP_IO; |
722 | ||
8b850bd5 NC |
723 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) |
724 | sv_setsv(sv, &PL_sv_undef); | |
725 | else { | |
726 | sv_setpvs(sv, ""); | |
727 | SvUTF8_off(sv); | |
728 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
20439bc7 | 729 | SV *const value = cop_hints_fetch_pvs(c, "open<", 0); |
8b850bd5 NC |
730 | assert(value); |
731 | sv_catsv(sv, value); | |
732 | } | |
733 | sv_catpvs(sv, "\0"); | |
734 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
20439bc7 | 735 | SV *const value = cop_hints_fetch_pvs(c, "open>", 0); |
8b850bd5 NC |
736 | assert(value); |
737 | sv_catsv(sv, value); | |
738 | } | |
739 | } | |
740 | } | |
741 | ||
25bbd826 CB |
742 | #ifdef VMS |
743 | #include <descrip.h> | |
744 | #include <starlet.h> | |
745 | #endif | |
746 | ||
79072805 | 747 | int |
864dbfa3 | 748 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 749 | { |
27da23d5 | 750 | dVAR; |
eb578fdb KW |
751 | I32 paren; |
752 | const char *s = NULL; | |
753 | REGEXP *rx; | |
823a54a3 | 754 | const char * const remaining = mg->mg_ptr + 1; |
e91d8259 | 755 | char nextchar; |
79072805 | 756 | |
7918f24d NC |
757 | PERL_ARGS_ASSERT_MAGIC_GET; |
758 | ||
e91d8259 | 759 | if (!mg->mg_ptr) { |
e91d8259 | 760 | paren = mg->mg_len; |
e91d8259 | 761 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
a6d0b1b5 | 762 | do_numbuf_fetch: |
e91d8259 NC |
763 | CALLREG_NUMBUF_FETCH(rx,paren,sv); |
764 | } else { | |
765 | sv_setsv(sv,&PL_sv_undef); | |
766 | } | |
767 | return 0; | |
768 | } | |
769 | ||
770 | nextchar = *remaining; | |
79072805 | 771 | switch (*mg->mg_ptr) { |
748a9306 | 772 | case '\001': /* ^A */ |
f2da823f FC |
773 | if (SvOK(PL_bodytarget)) sv_copypv(sv, PL_bodytarget); |
774 | else sv_setsv(sv, &PL_sv_undef); | |
125b9982 NT |
775 | if (SvTAINTED(PL_bodytarget)) |
776 | SvTAINTED_on(sv); | |
748a9306 | 777 | break; |
e5218da5 | 778 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 779 | if (nextchar == '\0') { |
e5218da5 GA |
780 | sv_setiv(sv, (IV)PL_minus_c); |
781 | } | |
823a54a3 | 782 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
783 | sv_setiv(sv, (IV)STATUS_NATIVE); |
784 | } | |
49460fe6 NIS |
785 | break; |
786 | ||
79072805 | 787 | case '\004': /* ^D */ |
aea4f609 | 788 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 789 | break; |
28f23441 | 790 | case '\005': /* ^E */ |
823a54a3 | 791 | if (nextchar == '\0') { |
e37778c2 | 792 | #if defined(VMS) |
0a378802 | 793 | { |
0a378802 JH |
794 | char msg[255]; |
795 | $DESCRIPTOR(msgdsc,msg); | |
796 | sv_setnv(sv,(NV) vaxc$errno); | |
797 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
798 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
799 | else | |
76f68e9b | 800 | sv_setpvs(sv,""); |
0a378802 | 801 | } |
4b645107 | 802 | #elif defined(OS2) |
0a378802 JH |
803 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
804 | sv_setnv(sv, (NV)errno); | |
805 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
806 | } else { | |
807 | if (errno != errno_isOS2) { | |
823a54a3 | 808 | const int tmp = _syserrno(); |
0a378802 JH |
809 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
810 | Perl_rc = tmp; | |
811 | } | |
812 | sv_setnv(sv, (NV)Perl_rc); | |
813 | sv_setpv(sv, os2error(Perl_rc)); | |
814 | } | |
4b645107 | 815 | #elif defined(WIN32) |
0a378802 | 816 | { |
d4c19fe8 | 817 | const DWORD dwErr = GetLastError(); |
0a378802 | 818 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 819 | if (dwErr) { |
0a378802 JH |
820 | PerlProc_GetOSError(sv, dwErr); |
821 | } | |
822 | else | |
76f68e9b | 823 | sv_setpvs(sv, ""); |
0a378802 JH |
824 | SetLastError(dwErr); |
825 | } | |
22fae026 | 826 | #else |
f6c8f21d | 827 | { |
4ee39169 | 828 | dSAVE_ERRNO; |
f6c8f21d | 829 | sv_setnv(sv, (NV)errno); |
666ea192 | 830 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 831 | RESTORE_ERRNO; |
f6c8f21d | 832 | } |
28f23441 | 833 | #endif |
ad3296c6 | 834 | SvRTRIM(sv); |
0a378802 JH |
835 | SvNOK_on(sv); /* what a wonderful hack! */ |
836 | } | |
823a54a3 | 837 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
838 | sv_setsv(sv, PL_encoding); |
839 | break; | |
79072805 | 840 | case '\006': /* ^F */ |
3280af22 | 841 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 842 | break; |
9ebf26ad FR |
843 | case '\007': /* ^GLOBAL_PHASE */ |
844 | if (strEQ(remaining, "LOBAL_PHASE")) { | |
845 | sv_setpvn(sv, PL_phase_names[PL_phase], | |
846 | strlen(PL_phase_names[PL_phase])); | |
847 | } | |
848 | break; | |
a0d0e21e | 849 | case '\010': /* ^H */ |
3280af22 | 850 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 851 | break; |
9d116dd7 | 852 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 853 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 854 | break; |
8561ea1d FC |
855 | case '\014': /* ^LAST_FH */ |
856 | if (strEQ(remaining, "AST_FH")) { | |
857 | if (PL_last_in_gv) { | |
858 | assert(isGV_with_GP(PL_last_in_gv)); | |
859 | SV_CHECK_THINKFIRST_COW_DROP(sv); | |
860 | prepare_SV_for_RV(sv); | |
861 | SvOK_off(sv); | |
862 | SvRV_set(sv, SvREFCNT_inc_simple_NN(PL_last_in_gv)); | |
863 | SvROK_on(sv); | |
864 | sv_rvweaken(sv); | |
865 | } | |
866 | else sv_setsv_nomg(sv, NULL); | |
867 | } | |
868 | break; | |
ac27b0f5 | 869 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 870 | if (nextchar == '\0') { |
ac27b0f5 | 871 | sv_setpv(sv, PL_osname); |
3511154c DM |
872 | SvTAINTED_off(sv); |
873 | } | |
823a54a3 | 874 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 875 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 876 | } |
28f23441 | 877 | break; |
9ebf26ad | 878 | case '\020': |
a6d0b1b5 | 879 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 880 | break; |
fb73857a | 881 | case '\023': /* ^S */ |
a6d0b1b5 | 882 | { |
bc177e6b | 883 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 884 | SvOK_off(sv); |
3280af22 | 885 | else if (PL_in_eval) |
6dc8a9e4 | 886 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
887 | else |
888 | sv_setiv(sv, 0); | |
d58bf5aa | 889 | } |
fb73857a | 890 | break; |
79072805 | 891 | case '\024': /* ^T */ |
823a54a3 | 892 | if (nextchar == '\0') { |
88e89b8a | 893 | #ifdef BIG_TIME |
7c36658b | 894 | sv_setnv(sv, PL_basetime); |
88e89b8a | 895 | #else |
7c36658b | 896 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 897 | #endif |
7c36658b | 898 | } |
823a54a3 | 899 | else if (strEQ(remaining, "AINT")) |
284167a5 S |
900 | sv_setiv(sv, TAINTING_get |
901 | ? (TAINT_WARN_get || PL_unsafe ? -1 : 1) | |
9aa05f58 | 902 | : 0); |
7c36658b | 903 | break; |
e07ea26a | 904 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 905 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 906 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 907 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 908 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
909 | else if (strEQ(remaining, "TF8CACHE")) |
910 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
911 | break; |
912 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 913 | if (nextchar == '\0') |
4438c4b7 | 914 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 915 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 916 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 917 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
918 | } |
919 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
7e4f0450 FC |
920 | sv_setsv(sv, &PL_sv_undef); |
921 | break; | |
013b78e8 | 922 | } |
d3a7d8c7 | 923 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
924 | /* Get the bit mask for $warnings::Bits{all}, because |
925 | * it could have been extended by warnings::register */ | |
4bac9ae4 CS |
926 | HV * const bits = get_hv("warnings::Bits", 0); |
927 | SV ** const bits_all = bits ? hv_fetchs(bits, "all", FALSE) : NULL; | |
928 | if (bits_all) | |
929 | sv_copypv(sv, *bits_all); | |
930 | else | |
931 | sv_setpvn(sv, WARN_ALLstring, WARNsize); | |
ac27b0f5 | 932 | } |
4438c4b7 | 933 | else { |
72dc9ed5 NC |
934 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
935 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 936 | } |
4438c4b7 | 937 | } |
79072805 | 938 | break; |
79072805 | 939 | case '+': |
aaa362c4 | 940 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2c7b5d76 DM |
941 | paren = RX_LASTPAREN(rx); |
942 | if (paren) | |
943 | goto do_numbuf_fetch; | |
79072805 | 944 | } |
3280af22 | 945 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 946 | break; |
a01268b5 JH |
947 | case '\016': /* ^N */ |
948 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
2c7b5d76 DM |
949 | paren = RX_LASTCLOSEPAREN(rx); |
950 | if (paren) | |
951 | goto do_numbuf_fetch; | |
a01268b5 JH |
952 | } |
953 | sv_setsv(sv,&PL_sv_undef); | |
954 | break; | |
79072805 | 955 | case '.': |
3280af22 | 956 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 957 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 958 | } |
79072805 LW |
959 | break; |
960 | case '?': | |
809a5acc | 961 | { |
809a5acc | 962 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 963 | #ifdef COMPLEX_STATUS |
41cb7b2b | 964 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
965 | LvTARGOFF(sv) = PL_statusvalue; |
966 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 967 | #endif |
809a5acc | 968 | } |
79072805 LW |
969 | break; |
970 | case '^': | |
acbe1b9d | 971 | if (GvIOp(PL_defoutgv)) |
099be4f1 | 972 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
973 | if (s) |
974 | sv_setpv(sv,s); | |
975 | else { | |
3280af22 | 976 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 977 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
978 | } |
979 | break; | |
980 | case '~': | |
acbe1b9d | 981 | if (GvIOp(PL_defoutgv)) |
0daa599b | 982 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 983 | if (!s) |
3280af22 | 984 | s = GvENAME(PL_defoutgv); |
79072805 LW |
985 | sv_setpv(sv,s); |
986 | break; | |
79072805 | 987 | case '=': |
099be4f1 | 988 | if (GvIO(PL_defoutgv)) |
0daa599b | 989 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
990 | break; |
991 | case '-': | |
099be4f1 | 992 | if (GvIO(PL_defoutgv)) |
0daa599b | 993 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
994 | break; |
995 | case '%': | |
099be4f1 | 996 | if (GvIO(PL_defoutgv)) |
0daa599b | 997 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 | 998 | break; |
79072805 LW |
999 | case ':': |
1000 | break; | |
1001 | case '/': | |
1002 | break; | |
1003 | case '[': | |
e1dccc0d | 1004 | sv_setiv(sv, 0); |
79072805 LW |
1005 | break; |
1006 | case '|': | |
099be4f1 | 1007 | if (GvIO(PL_defoutgv)) |
0daa599b | 1008 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 | 1009 | break; |
79072805 | 1010 | case '\\': |
b2ce0fda | 1011 | if (PL_ors_sv) |
f28098ff | 1012 | sv_copypv(sv, PL_ors_sv); |
4bac9ae4 CS |
1013 | else |
1014 | sv_setsv(sv, &PL_sv_undef); | |
79072805 | 1015 | break; |
0e219455 | 1016 | case '$': /* $$ */ |
9cdac2a2 FC |
1017 | { |
1018 | IV const pid = (IV)PerlProc_getpid(); | |
19db9fb7 | 1019 | if (isGV(mg->mg_obj) || SvIV(mg->mg_obj) != pid) { |
9cdac2a2 FC |
1020 | /* never set manually, or at least not since last fork */ |
1021 | sv_setiv(sv, pid); | |
19db9fb7 Z |
1022 | /* never unsafe, even if reading in a tainted expression */ |
1023 | SvTAINTED_off(sv); | |
1024 | } | |
9cdac2a2 FC |
1025 | /* else a value has been assigned manually, so do nothing */ |
1026 | } | |
0e219455 MM |
1027 | break; |
1028 | ||
79072805 | 1029 | case '!': |
666d8aa2 CB |
1030 | { |
1031 | dSAVE_ERRNO; | |
a5f75d66 | 1032 | #ifdef VMS |
65202027 | 1033 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
a5f75d66 | 1034 | #else |
65202027 | 1035 | sv_setnv(sv, (NV)errno); |
666d8aa2 | 1036 | #endif |
88e89b8a | 1037 | #ifdef OS2 |
ed344e4f IZ |
1038 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
1039 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 1040 | else |
a5f75d66 | 1041 | #endif |
1500bd91 KW |
1042 | if (! errno) { |
1043 | sv_setpvs(sv, ""); | |
1044 | } | |
1045 | else { | |
1046 | ||
1047 | /* Strerror can return NULL on some platforms, which will result in | |
1048 | * 'sv' not being considered SvOK. The SvNOK_on() below will cause | |
1049 | * just the number part to be valid */ | |
1050 | sv_setpv(sv, Strerror(errno)); | |
1051 | ||
1052 | /* In some locales the error string may come back as UTF-8, in | |
1053 | * which case we should turn on that flag. This didn't use to | |
1054 | * happen, and to avoid any possible backward compatibility issues, | |
1055 | * we don't turn on the flag unless we have to. So the flag stays | |
1056 | * off for an entirely ASCII string. We assume that if the string | |
1057 | * looks like UTF-8, it really is UTF-8: "text in any other | |
1058 | * encoding that uses bytes with the high bit set is extremely | |
1059 | * unlikely to pass a UTF-8 validity test" | |
1060 | * (http://en.wikipedia.org/wiki/Charset_detection). There is a | |
1061 | * potential that we will get it wrong however, especially on short | |
1062 | * error message text. (If it turns out to be necessary, we could | |
1063 | * also keep track if the current LC_MESSAGES locale is UTF-8) */ | |
1064 | if (SvOK(sv) /* It could be that Strerror returned invalid */ | |
1065 | && ! is_ascii_string((U8*) SvPVX_const(sv), SvCUR(sv)) | |
1066 | && is_utf8_string((U8*) SvPVX_const(sv), SvCUR(sv))) | |
1067 | { | |
1068 | SvUTF8_on(sv); | |
1069 | } | |
1070 | } | |
4ee39169 | 1071 | RESTORE_ERRNO; |
88e89b8a | 1072 | } |
666d8aa2 | 1073 | |
ad3296c6 | 1074 | SvRTRIM(sv); |
946ec16e | 1075 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1076 | break; |
1077 | case '<': | |
dfff4baf | 1078 | sv_setuid(sv, PerlProc_getuid()); |
79072805 LW |
1079 | break; |
1080 | case '>': | |
dfff4baf | 1081 | sv_setuid(sv, PerlProc_geteuid()); |
79072805 LW |
1082 | break; |
1083 | case '(': | |
dfff4baf | 1084 | sv_setgid(sv, PerlProc_getgid()); |
79072805 LW |
1085 | goto add_groups; |
1086 | case ')': | |
dfff4baf | 1087 | sv_setgid(sv, PerlProc_getegid()); |
79072805 | 1088 | add_groups: |
79072805 | 1089 | #ifdef HAS_GETGROUPS |
79072805 | 1090 | { |
57d7c65e | 1091 | Groups_t *gary = NULL; |
fb45abb2 | 1092 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1093 | Newx(gary, num_groups, Groups_t); |
1094 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1095 | for (i = 0; i < num_groups; i++) |
1096 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1097 | Safefree(gary); |
79072805 | 1098 | } |
155aba94 | 1099 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1100 | #endif |
79072805 | 1101 | break; |
79072805 LW |
1102 | case '0': |
1103 | break; | |
1104 | } | |
a0d0e21e | 1105 | return 0; |
79072805 LW |
1106 | } |
1107 | ||
1108 | int | |
864dbfa3 | 1109 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1110 | { |
8772537c | 1111 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1112 | |
7918f24d NC |
1113 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1114 | ||
79072805 | 1115 | if (uf && uf->uf_val) |
24f81a43 | 1116 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1117 | return 0; |
1118 | } | |
1119 | ||
1120 | int | |
864dbfa3 | 1121 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1122 | { |
27da23d5 | 1123 | dVAR; |
9ae3433d | 1124 | STRLEN len = 0, klen; |
12033064 | 1125 | const char * const key = MgPV_const(mg,klen); |
888a67f6 | 1126 | const char *s = ""; |
1e422769 | 1127 | |
7918f24d NC |
1128 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1129 | ||
613c63b4 | 1130 | SvGETMAGIC(sv); |
12033064 | 1131 | if (SvOK(sv)) { |
613c63b4 CS |
1132 | /* defined environment variables are byte strings; unfortunately |
1133 | there is no SvPVbyte_force_nomg(), so we must do this piecewise */ | |
1134 | (void)SvPV_force_nomg_nolen(sv); | |
1135 | sv_utf8_downgrade(sv, /* fail_ok */ TRUE); | |
1136 | if (SvUTF8(sv)) { | |
1137 | Perl_ck_warner_d(aTHX_ packWARN(WARN_UTF8), "Wide character in %s", "setenv"); | |
1138 | SvUTF8_off(sv); | |
1139 | } | |
1140 | s = SvPVX(sv); | |
1141 | len = SvCUR(sv); | |
12033064 CS |
1142 | } |
1143 | my_setenv(key, s); /* does the deed */ | |
1144 | ||
a0d0e21e LW |
1145 | #ifdef DYNAMIC_ENV_FETCH |
1146 | /* We just undefd an environment var. Is a replacement */ | |
1147 | /* waiting in the wings? */ | |
1148 | if (!len) { | |
6bd66ee9 | 1149 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), key, klen, FALSE); |
fabdb6c0 | 1150 | if (valp) |
4ab59fcc | 1151 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1152 | } |
1153 | #endif | |
1e422769 | 1154 | |
39e571d4 | 1155 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1156 | /* And you'll never guess what the dog had */ |
1157 | /* in its mouth... */ | |
284167a5 | 1158 | if (TAINTING_get) { |
1e422769 | 1159 | MgTAINTEDDIR_off(mg); |
1160 | #ifdef VMS | |
6bd66ee9 | 1161 | if (s && klen == 8 && strEQ(key, "DCL$PATH")) { |
b8ffc8df | 1162 | char pathbuf[256], eltbuf[256], *cp, *elt; |
1e422769 | 1163 | int i = 0, j = 0; |
1164 | ||
6fca0082 | 1165 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1166 | elt = eltbuf; |
1e422769 | 1167 | do { /* DCL$PATH may be a search list */ |
1168 | while (1) { /* as may dev portion of any element */ | |
1169 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1170 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1171 | cando_by_name(S_IWUSR,0,elt) ) { | |
1172 | MgTAINTEDDIR_on(mg); | |
1173 | return 0; | |
1174 | } | |
1175 | } | |
bd61b366 | 1176 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1177 | *cp = '\0'; |
1178 | if (my_trnlnm(elt, eltbuf, j++)) | |
1179 | elt = eltbuf; | |
1180 | else | |
1181 | break; | |
1182 | } | |
1183 | j = 0; | |
1184 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1185 | } | |
1186 | #endif /* VMS */ | |
12033064 | 1187 | if (s && klen == 4 && strEQ(key,"PATH")) { |
8772537c | 1188 | const char * const strend = s + len; |
463ee0b2 LW |
1189 | |
1190 | while (s < strend) { | |
96827780 | 1191 | char tmpbuf[256]; |
c623ac67 | 1192 | Stat_t st; |
5f74f29c | 1193 | I32 i; |
f5a63d97 AL |
1194 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1195 | const char path_sep = '|'; | |
1196 | #else | |
1197 | const char path_sep = ':'; | |
1198 | #endif | |
96827780 | 1199 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1200 | s, strend, path_sep, &i); |
463ee0b2 | 1201 | s++; |
bb7a0f54 | 1202 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1203 | #ifdef VMS |
1204 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1205 | #else | |
1206 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1207 | #endif | |
c6ed36e1 | 1208 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1209 | MgTAINTEDDIR_on(mg); |
1e422769 | 1210 | return 0; |
1211 | } | |
463ee0b2 | 1212 | } |
79072805 LW |
1213 | } |
1214 | } | |
39e571d4 | 1215 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1216 | |
79072805 LW |
1217 | return 0; |
1218 | } | |
1219 | ||
1220 | int | |
864dbfa3 | 1221 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1222 | { |
7918f24d | 1223 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1224 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1225 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1226 | return 0; |
1227 | } | |
1228 | ||
88e89b8a | 1229 | int |
864dbfa3 | 1230 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1231 | { |
97aff369 | 1232 | dVAR; |
7918f24d | 1233 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1234 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1235 | #if defined(VMS) |
cea2e8a9 | 1236 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1237 | #else |
3280af22 | 1238 | if (PL_localizing) { |
fb73857a | 1239 | HE* entry; |
b0269e46 | 1240 | my_clearenv(); |
85fbaab2 NC |
1241 | hv_iterinit(MUTABLE_HV(sv)); |
1242 | while ((entry = hv_iternext(MUTABLE_HV(sv)))) { | |
fb73857a | 1243 | I32 keylen; |
1244 | my_setenv(hv_iterkey(entry, &keylen), | |
85fbaab2 | 1245 | SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry))); |
fb73857a | 1246 | } |
1247 | } | |
1248 | #endif | |
1249 | return 0; | |
1250 | } | |
1251 | ||
1252 | int | |
864dbfa3 | 1253 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1254 | { |
27da23d5 | 1255 | dVAR; |
7918f24d | 1256 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1257 | PERL_UNUSED_ARG(sv); |
1258 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1259 | #if defined(VMS) |
1260 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1261 | #else | |
1262 | my_clearenv(); | |
1263 | #endif | |
3e3baf6d | 1264 | return 0; |
66b1d557 HM |
1265 | } |
1266 | ||
64ca3a65 | 1267 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1268 | #ifdef HAS_SIGPROCMASK |
1269 | static void | |
1270 | restore_sigmask(pTHX_ SV *save_sv) | |
1271 | { | |
0bd48802 | 1272 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1273 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1274 | } |
1275 | #endif | |
66b1d557 | 1276 | int |
864dbfa3 | 1277 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1278 | { |
97aff369 | 1279 | dVAR; |
88e89b8a | 1280 | /* Are we fetching a signal entry? */ |
708854f2 | 1281 | int i = (I16)mg->mg_private; |
7918f24d NC |
1282 | |
1283 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1284 | ||
708854f2 | 1285 | if (!i) { |
84c7b88c BF |
1286 | STRLEN siglen; |
1287 | const char * sig = MgPV_const(mg, siglen); | |
1288 | mg->mg_private = i = whichsig_pvn(sig, siglen); | |
708854f2 NC |
1289 | } |
1290 | ||
e02bfb16 | 1291 | if (i > 0) { |
22c35a8c GS |
1292 | if(PL_psig_ptr[i]) |
1293 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1294 | else { |
46da273f | 1295 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1296 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1297 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1298 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1299 | #endif |
1300 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1301 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1302 | sigstate = SIG_DFL; | |
85b332e2 | 1303 | #endif |
88e89b8a | 1304 | /* cache state so we don't fetch it again */ |
8aad04aa | 1305 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1306 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1307 | else |
3280af22 | 1308 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1309 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1310 | SvTEMP_off(sv); |
1311 | } | |
1312 | } | |
1313 | return 0; | |
1314 | } | |
1315 | int | |
864dbfa3 | 1316 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1317 | { |
7918f24d | 1318 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
179c85a2 | 1319 | |
38a124f0 | 1320 | magic_setsig(NULL, mg); |
179c85a2 | 1321 | return sv_unmagic(sv, mg->mg_type); |
88e89b8a | 1322 | } |
3d37d572 | 1323 | |
0a8e0eff | 1324 | Signal_t |
8aad04aa | 1325 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1326 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1327 | #else |
0a8e0eff | 1328 | Perl_csighandler(int sig) |
8aad04aa | 1329 | #endif |
0a8e0eff | 1330 | { |
1018e26f NIS |
1331 | #ifdef PERL_GET_SIG_CONTEXT |
1332 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1333 | #else | |
85b332e2 CL |
1334 | dTHX; |
1335 | #endif | |
23ada85b | 1336 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1337 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1338 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1339 | #endif |
2e34cc90 | 1340 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1341 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1342 | #ifdef KILL_BY_SIGPRC |
1343 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1344 | #else | |
1345 | exit(1); | |
1346 | #endif | |
1347 | #endif | |
406878dd | 1348 | if ( |
853d2c32 RGS |
1349 | #ifdef SIGILL |
1350 | sig == SIGILL || | |
1351 | #endif | |
1352 | #ifdef SIGBUS | |
1353 | sig == SIGBUS || | |
1354 | #endif | |
1355 | #ifdef SIGSEGV | |
1356 | sig == SIGSEGV || | |
1357 | #endif | |
1358 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 | 1359 | /* Call the perl level handler now-- |
31c91b43 | 1360 | * with risk we may be in malloc() or being destructed etc. */ |
6e324d09 | 1361 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1362 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1363 | #else |
1364 | (*PL_sighandlerp)(sig); | |
92807b6d | 1365 | #endif |
406878dd | 1366 | else { |
31c91b43 | 1367 | if (!PL_psig_pend) return; |
406878dd GA |
1368 | /* Set a flag to say this signal is pending, that is awaiting delivery after |
1369 | * the current Perl opcode completes */ | |
1370 | PL_psig_pend[sig]++; | |
1371 | ||
1372 | #ifndef SIG_PENDING_DIE_COUNT | |
1373 | # define SIG_PENDING_DIE_COUNT 120 | |
1374 | #endif | |
fe13d51d | 1375 | /* Add one to say _a_ signal is pending */ |
406878dd GA |
1376 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1377 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1378 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
1379 | } | |
0a8e0eff NIS |
1380 | } |
1381 | ||
2e34cc90 CL |
1382 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1383 | void | |
1384 | Perl_csighandler_init(void) | |
1385 | { | |
1386 | int sig; | |
27da23d5 | 1387 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1388 | |
1389 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1390 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1391 | dTHX; |
27da23d5 | 1392 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1393 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1394 | #endif |
1395 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1396 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1397 | #endif |
1398 | } | |
27da23d5 | 1399 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1400 | } |
1401 | #endif | |
1402 | ||
7fe50b8b LT |
1403 | #if defined HAS_SIGPROCMASK |
1404 | static void | |
1405 | unblock_sigmask(pTHX_ void* newset) | |
1406 | { | |
1407 | sigprocmask(SIG_UNBLOCK, (sigset_t*)newset, NULL); | |
1408 | } | |
1409 | #endif | |
1410 | ||
0a8e0eff NIS |
1411 | void |
1412 | Perl_despatch_signals(pTHX) | |
1413 | { | |
97aff369 | 1414 | dVAR; |
0a8e0eff NIS |
1415 | int sig; |
1416 | PL_sig_pending = 0; | |
1417 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1418 | if (PL_psig_pend[sig]) { | |
d0166017 | 1419 | dSAVE_ERRNO; |
7fe50b8b | 1420 | #ifdef HAS_SIGPROCMASK |
55534442 LT |
1421 | /* From sigaction(2) (FreeBSD man page): |
1422 | * | Signal routines normally execute with the signal that | |
1423 | * | caused their invocation blocked, but other signals may | |
1424 | * | yet occur. | |
1425 | * Emulation of this behavior (from within Perl) is enabled | |
1426 | * using sigprocmask | |
1427 | */ | |
1428 | int was_blocked; | |
1429 | sigset_t newset, oldset; | |
1430 | ||
1431 | sigemptyset(&newset); | |
1432 | sigaddset(&newset, sig); | |
1433 | sigprocmask(SIG_BLOCK, &newset, &oldset); | |
1434 | was_blocked = sigismember(&oldset, sig); | |
7fe50b8b LT |
1435 | if (!was_blocked) { |
1436 | SV* save_sv = newSVpvn((char *)(&newset), sizeof(sigset_t)); | |
1437 | ENTER; | |
1438 | SAVEFREESV(save_sv); | |
1439 | SAVEDESTRUCTOR_X(unblock_sigmask, SvPV_nolen(save_sv)); | |
1440 | } | |
55534442 | 1441 | #endif |
25da4428 | 1442 | PL_psig_pend[sig] = 0; |
6e324d09 | 1443 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1444 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1445 | #else |
1446 | (*PL_sighandlerp)(sig); | |
92807b6d | 1447 | #endif |
7fe50b8b | 1448 | #ifdef HAS_SIGPROCMASK |
55534442 | 1449 | if (!was_blocked) |
7fe50b8b | 1450 | LEAVE; |
55534442 | 1451 | #endif |
d0166017 | 1452 | RESTORE_ERRNO; |
0a8e0eff NIS |
1453 | } |
1454 | } | |
1455 | } | |
1456 | ||
38a124f0 | 1457 | /* sv of NULL signifies that we're acting as magic_clearsig. */ |
85e6fe83 | 1458 | int |
864dbfa3 | 1459 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1460 | { |
27da23d5 | 1461 | dVAR; |
79072805 | 1462 | I32 i; |
cbbf8932 | 1463 | SV** svp = NULL; |
2d4fcd5e AJ |
1464 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1465 | * effects (due to closures). We must make sure that the new disposition | |
1466 | * is in place before it is called. | |
1467 | */ | |
cbbf8932 | 1468 | SV* to_dec = NULL; |
e72dc28c | 1469 | STRLEN len; |
2d4fcd5e AJ |
1470 | #ifdef HAS_SIGPROCMASK |
1471 | sigset_t set, save; | |
1472 | SV* save_sv; | |
1473 | #endif | |
eb578fdb | 1474 | const char *s = MgPV_const(mg,len); |
7918f24d NC |
1475 | |
1476 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1477 | ||
748a9306 | 1478 | if (*s == '_') { |
84c7b88c | 1479 | if (memEQs(s, len, "__DIE__")) |
3280af22 | 1480 | svp = &PL_diehook; |
84c7b88c | 1481 | else if (memEQs(s, len, "__WARN__") |
38a124f0 NC |
1482 | && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) { |
1483 | /* Merge the existing behaviours, which are as follows: | |
1484 | magic_setsig, we always set svp to &PL_warnhook | |
1485 | (hence we always change the warnings handler) | |
1486 | For magic_clearsig, we don't change the warnings handler if it's | |
1487 | set to the &PL_warnhook. */ | |
3280af22 | 1488 | svp = &PL_warnhook; |
84c7b88c BF |
1489 | } else if (sv) { |
1490 | SV *tmp = sv_newmortal(); | |
1491 | Perl_croak(aTHX_ "No such hook: %s", | |
1492 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1493 | } | |
748a9306 | 1494 | i = 0; |
38a124f0 | 1495 | if (svp && *svp) { |
9289f461 RGS |
1496 | if (*svp != PERL_WARNHOOK_FATAL) |
1497 | to_dec = *svp; | |
cbbf8932 | 1498 | *svp = NULL; |
4633a7c4 | 1499 | } |
748a9306 LW |
1500 | } |
1501 | else { | |
708854f2 NC |
1502 | i = (I16)mg->mg_private; |
1503 | if (!i) { | |
84c7b88c | 1504 | i = whichsig_pvn(s, len); /* ...no, a brick */ |
58a26b12 | 1505 | mg->mg_private = (U16)i; |
708854f2 | 1506 | } |
86d86cad | 1507 | if (i <= 0) { |
84c7b88c BF |
1508 | if (sv) { |
1509 | SV *tmp = sv_newmortal(); | |
1510 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", | |
1511 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1512 | } | |
748a9306 LW |
1513 | return 0; |
1514 | } | |
2d4fcd5e AJ |
1515 | #ifdef HAS_SIGPROCMASK |
1516 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1517 | sigemptyset(&set); | |
1518 | sigaddset(&set,i); | |
1519 | sigprocmask(SIG_BLOCK, &set, &save); | |
1520 | ENTER; | |
9ff8e806 | 1521 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1522 | SAVEFREESV(save_sv); |
1523 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1524 | #endif | |
1525 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1526 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1527 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1528 | #endif |
23ada85b | 1529 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1530 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1531 | #endif |
2e34cc90 | 1532 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1533 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1534 | #endif |
2d4fcd5e | 1535 | to_dec = PL_psig_ptr[i]; |
38a124f0 NC |
1536 | if (sv) { |
1537 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); | |
1538 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ | |
79fd3822 NC |
1539 | |
1540 | /* Signals don't change name during the program's execution, so once | |
1541 | they're cached in the appropriate slot of PL_psig_name, they can | |
1542 | stay there. | |
1543 | ||
1544 | Ideally we'd find some way of making SVs at (C) compile time, or | |
1545 | at least, doing most of the work. */ | |
1546 | if (!PL_psig_name[i]) { | |
1547 | PL_psig_name[i] = newSVpvn(s, len); | |
1548 | SvREADONLY_on(PL_psig_name[i]); | |
1549 | } | |
38a124f0 | 1550 | } else { |
79fd3822 | 1551 | SvREFCNT_dec(PL_psig_name[i]); |
38a124f0 NC |
1552 | PL_psig_name[i] = NULL; |
1553 | PL_psig_ptr[i] = NULL; | |
1554 | } | |
748a9306 | 1555 | } |
38a124f0 | 1556 | if (sv && (isGV_with_GP(sv) || SvROK(sv))) { |
2d4fcd5e | 1557 | if (i) { |
5c1546dc | 1558 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1559 | } |
748a9306 | 1560 | else |
b37c2d43 | 1561 | *svp = SvREFCNT_inc_simple_NN(sv); |
38a124f0 | 1562 | } else { |
9dfa190b NC |
1563 | if (sv && SvOK(sv)) { |
1564 | s = SvPV_force(sv, len); | |
1565 | } else { | |
1566 | sv = NULL; | |
1567 | } | |
84c7b88c | 1568 | if (sv && memEQs(s, len,"IGNORE")) { |
9dfa190b | 1569 | if (i) { |
23ada85b | 1570 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
9dfa190b NC |
1571 | PL_sig_ignoring[i] = 1; |
1572 | (void)rsignal(i, PL_csighandlerp); | |
85b332e2 | 1573 | #else |
9dfa190b | 1574 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1575 | #endif |
9dfa190b | 1576 | } |
2d4fcd5e | 1577 | } |
84c7b88c | 1578 | else if (!sv || memEQs(s, len,"DEFAULT") || !len) { |
9dfa190b | 1579 | if (i) { |
2e34cc90 | 1580 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
9dfa190b NC |
1581 | PL_sig_defaulting[i] = 1; |
1582 | (void)rsignal(i, PL_csighandlerp); | |
2e34cc90 | 1583 | #else |
9dfa190b | 1584 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1585 | #endif |
9dfa190b NC |
1586 | } |
1587 | } | |
1588 | else { | |
1589 | /* | |
1590 | * We should warn if HINT_STRICT_REFS, but without | |
1591 | * access to a known hint bit in a known OP, we can't | |
1592 | * tell whether HINT_STRICT_REFS is in force or not. | |
1593 | */ | |
1594 | if (!strchr(s,':') && !strchr(s,'\'')) | |
1595 | Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"), | |
1596 | SV_GMAGIC); | |
1597 | if (i) | |
1598 | (void)rsignal(i, PL_csighandlerp); | |
1599 | else | |
1600 | *svp = SvREFCNT_inc_simple_NN(sv); | |
136e0459 | 1601 | } |
748a9306 | 1602 | } |
9dfa190b | 1603 | |
2d4fcd5e AJ |
1604 | #ifdef HAS_SIGPROCMASK |
1605 | if(i) | |
1606 | LEAVE; | |
1607 | #endif | |
ef8d46e8 | 1608 | SvREFCNT_dec(to_dec); |
79072805 LW |
1609 | return 0; |
1610 | } | |
64ca3a65 | 1611 | #endif /* !PERL_MICRO */ |
79072805 LW |
1612 | |
1613 | int | |
864dbfa3 | 1614 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1615 | { |
97aff369 | 1616 | dVAR; |
7918f24d | 1617 | PERL_ARGS_ASSERT_MAGIC_SETISA; |
8772537c | 1618 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1619 | |
89c14e2e | 1620 | /* Skip _isaelem because _isa will handle it shortly */ |
354b0578 | 1621 | if (PL_delaymagic & DM_ARRAY_ISA && mg->mg_type == PERL_MAGIC_isaelem) |
89c14e2e BB |
1622 | return 0; |
1623 | ||
0e446081 | 1624 | return magic_clearisa(NULL, mg); |
463ee0b2 LW |
1625 | } |
1626 | ||
0e446081 | 1627 | /* sv of NULL signifies that we're acting as magic_setisa. */ |
463ee0b2 | 1628 | int |
52b45067 RD |
1629 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1630 | { | |
1631 | dVAR; | |
1632 | HV* stash; | |
1633 | ||
7918f24d NC |
1634 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1635 | ||
52b45067 | 1636 | /* Bail out if destruction is going on */ |
627364f1 | 1637 | if(PL_phase == PERL_PHASE_DESTRUCT) return 0; |
52b45067 | 1638 | |
0e446081 NC |
1639 | if (sv) |
1640 | av_clear(MUTABLE_AV(sv)); | |
52b45067 | 1641 | |
6624142a FC |
1642 | if (SvTYPE(mg->mg_obj) != SVt_PVGV && SvSMAGICAL(mg->mg_obj)) |
1643 | /* This occurs with setisa_elem magic, which calls this | |
1644 | same function. */ | |
1645 | mg = mg_find(mg->mg_obj, PERL_MAGIC_isa); | |
1646 | ||
1647 | if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */ | |
1648 | SV **svp = AvARRAY((AV *)mg->mg_obj); | |
1649 | I32 items = AvFILLp((AV *)mg->mg_obj) + 1; | |
1650 | while (items--) { | |
1651 | stash = GvSTASH((GV *)*svp++); | |
1652 | if (stash && HvENAME(stash)) mro_isa_changed_in(stash); | |
1653 | } | |
1654 | ||
1655 | return 0; | |
1656 | } | |
1657 | ||
52b45067 | 1658 | stash = GvSTASH( |
6624142a | 1659 | (const GV *)mg->mg_obj |
52b45067 RD |
1660 | ); |
1661 | ||
00169e2c FC |
1662 | /* The stash may have been detached from the symbol table, so check its |
1663 | name before doing anything. */ | |
1664 | if (stash && HvENAME_get(stash)) | |
5562fa71 | 1665 | mro_isa_changed_in(stash); |
52b45067 RD |
1666 | |
1667 | return 0; | |
1668 | } | |
1669 | ||
1670 | int | |
864dbfa3 | 1671 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1672 | { |
85fbaab2 | 1673 | HV * const hv = MUTABLE_HV(LvTARG(sv)); |
6ff81951 | 1674 | I32 i = 0; |
7918f24d NC |
1675 | |
1676 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1677 | PERL_UNUSED_ARG(mg); |
7719e241 | 1678 | |
6ff81951 | 1679 | if (hv) { |
497b47a8 | 1680 | (void) hv_iterinit(hv); |
ad64d0ec | 1681 | if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
1b95d04f | 1682 | i = HvUSEDKEYS(hv); |
497b47a8 JH |
1683 | else { |
1684 | while (hv_iternext(hv)) | |
1685 | i++; | |
1686 | } | |
6ff81951 GS |
1687 | } |
1688 | ||
1689 | sv_setiv(sv, (IV)i); | |
1690 | return 0; | |
1691 | } | |
1692 | ||
1693 | int | |
864dbfa3 | 1694 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1695 | { |
7918f24d | 1696 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1697 | PERL_UNUSED_ARG(mg); |
946ec16e | 1698 | if (LvTARG(sv)) { |
85fbaab2 | 1699 | hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv)); |
946ec16e | 1700 | } |
1701 | return 0; | |
ac27b0f5 | 1702 | } |
946ec16e | 1703 | |
efaf3674 DM |
1704 | /* |
1705 | =for apidoc magic_methcall | |
1706 | ||
1707 | Invoke a magic method (like FETCH). | |
1708 | ||
2baee27b FC |
1709 | C<sv> and C<mg> are the tied thingy and the tie magic. |
1710 | ||
1711 | C<meth> is the name of the method to call. | |
1712 | ||
1713 | C<argc> is the number of args (in addition to $self) to pass to the method. | |
1714 | ||
1715 | The C<flags> can be: | |
1716 | ||
1717 | G_DISCARD invoke method with G_DISCARD flag and don't | |
1718 | return a value | |
1719 | G_UNDEF_FILL fill the stack with argc pointers to | |
1720 | PL_sv_undef | |
1721 | ||
1722 | The arguments themselves are any values following the C<flags> argument. | |
efaf3674 DM |
1723 | |
1724 | Returns the SV (if any) returned by the method, or NULL on failure. | |
1725 | ||
1726 | ||
1727 | =cut | |
1728 | */ | |
1729 | ||
1730 | SV* | |
36925d9e | 1731 | Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, SV *meth, U32 flags, |
046b0c7d | 1732 | U32 argc, ...) |
a0d0e21e | 1733 | { |
97aff369 | 1734 | dVAR; |
a0d0e21e | 1735 | dSP; |
efaf3674 | 1736 | SV* ret = NULL; |
463ee0b2 | 1737 | |
7918f24d NC |
1738 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1739 | ||
efaf3674 | 1740 | ENTER; |
d1d7a15d NC |
1741 | |
1742 | if (flags & G_WRITING_TO_STDERR) { | |
1743 | SAVETMPS; | |
1744 | ||
1745 | save_re_context(); | |
1746 | SAVESPTR(PL_stderrgv); | |
1747 | PL_stderrgv = NULL; | |
1748 | } | |
1749 | ||
efaf3674 | 1750 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1751 | PUSHMARK(SP); |
efaf3674 | 1752 | |
67549bd2 NC |
1753 | EXTEND(SP, argc+1); |
1754 | PUSHs(SvTIED_obj(sv, mg)); | |
1755 | if (flags & G_UNDEF_FILL) { | |
1756 | while (argc--) { | |
efaf3674 | 1757 | PUSHs(&PL_sv_undef); |
93965878 | 1758 | } |
67549bd2 | 1759 | } else if (argc > 0) { |
046b0c7d NC |
1760 | va_list args; |
1761 | va_start(args, argc); | |
1762 | ||
1763 | do { | |
1764 | SV *const sv = va_arg(args, SV *); | |
1765 | PUSHs(sv); | |
1766 | } while (--argc); | |
1767 | ||
1768 | va_end(args); | |
88e89b8a | 1769 | } |
463ee0b2 | 1770 | PUTBACK; |
efaf3674 | 1771 | if (flags & G_DISCARD) { |
36925d9e | 1772 | call_sv(meth, G_SCALAR|G_DISCARD|G_METHOD_NAMED); |
efaf3674 DM |
1773 | } |
1774 | else { | |
36925d9e | 1775 | if (call_sv(meth, G_SCALAR|G_METHOD_NAMED)) |
efaf3674 DM |
1776 | ret = *PL_stack_sp--; |
1777 | } | |
1778 | POPSTACK; | |
d1d7a15d NC |
1779 | if (flags & G_WRITING_TO_STDERR) |
1780 | FREETMPS; | |
efaf3674 DM |
1781 | LEAVE; |
1782 | return ret; | |
1783 | } | |
1784 | ||
efaf3674 | 1785 | /* wrapper for magic_methcall that creates the first arg */ |
463ee0b2 | 1786 | |
efaf3674 | 1787 | STATIC SV* |
36925d9e | 1788 | S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, SV *meth, U32 flags, |
efaf3674 DM |
1789 | int n, SV *val) |
1790 | { | |
1791 | dVAR; | |
1792 | SV* arg1 = NULL; | |
1793 | ||
1794 | PERL_ARGS_ASSERT_MAGIC_METHCALL1; | |
1795 | ||
1796 | if (mg->mg_ptr) { | |
1797 | if (mg->mg_len >= 0) { | |
db4b3a1d | 1798 | arg1 = newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
efaf3674 DM |
1799 | } |
1800 | else if (mg->mg_len == HEf_SVKEY) | |
1801 | arg1 = MUTABLE_SV(mg->mg_ptr); | |
1802 | } | |
1803 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { | |
db4b3a1d | 1804 | arg1 = newSViv((IV)(mg->mg_len)); |
efaf3674 DM |
1805 | sv_2mortal(arg1); |
1806 | } | |
1807 | if (!arg1) { | |
046b0c7d | 1808 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n - 1, val); |
efaf3674 | 1809 | } |
046b0c7d | 1810 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n, arg1, val); |
946ec16e | 1811 | } |
1812 | ||
76e3520e | 1813 | STATIC int |
36925d9e | 1814 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, SV *meth) |
a0d0e21e | 1815 | { |
efaf3674 DM |
1816 | dVAR; |
1817 | SV* ret; | |
463ee0b2 | 1818 | |
7918f24d NC |
1819 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1820 | ||
efaf3674 DM |
1821 | ret = magic_methcall1(sv, mg, meth, 0, 1, NULL); |
1822 | if (ret) | |
1823 | sv_setsv(sv, ret); | |
a0d0e21e LW |
1824 | return 0; |
1825 | } | |
463ee0b2 | 1826 | |
a0d0e21e | 1827 | int |
864dbfa3 | 1828 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1829 | { |
7918f24d NC |
1830 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1831 | ||
fd69380d | 1832 | if (mg->mg_type == PERL_MAGIC_tiedelem) |
a0d0e21e | 1833 | mg->mg_flags |= MGf_GSKIP; |
36925d9e | 1834 | magic_methpack(sv,mg,SV_CONST(FETCH)); |
463ee0b2 LW |
1835 | return 0; |
1836 | } | |
1837 | ||
1838 | int | |
864dbfa3 | 1839 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1840 | { |
efaf3674 | 1841 | dVAR; |
b112cff9 DM |
1842 | MAGIC *tmg; |
1843 | SV *val; | |
7918f24d NC |
1844 | |
1845 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1846 | ||
b112cff9 DM |
1847 | /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to |
1848 | * STORE() is not $val, but rather a PVLV (the sv in this call), whose | |
1849 | * public flags indicate its value based on copying from $val. Doing | |
1850 | * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us. | |
1851 | * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes | |
1852 | * wrong if $val happened to be tainted, as sv hasn't got magic | |
1853 | * enabled, even though taint magic is in the chain. In which case, | |
1854 | * fake up a temporary tainted value (this is easier than temporarily | |
1855 | * re-enabling magic on sv). */ | |
1856 | ||
284167a5 | 1857 | if (TAINTING_get && (tmg = mg_find(sv, PERL_MAGIC_taint)) |
b112cff9 DM |
1858 | && (tmg->mg_len & 1)) |
1859 | { | |
1860 | val = sv_mortalcopy(sv); | |
1861 | SvTAINTED_on(val); | |
1862 | } | |
1863 | else | |
1864 | val = sv; | |
1865 | ||
36925d9e | 1866 | magic_methcall1(sv, mg, SV_CONST(STORE), G_DISCARD, 2, val); |
463ee0b2 LW |
1867 | return 0; |
1868 | } | |
1869 | ||
1870 | int | |
864dbfa3 | 1871 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1872 | { |
7918f24d NC |
1873 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1874 | ||
4c13be3f | 1875 | if (mg->mg_type == PERL_MAGIC_tiedscalar) return 0; |
36925d9e | 1876 | return magic_methpack(sv,mg,SV_CONST(DELETE)); |
a0d0e21e | 1877 | } |
463ee0b2 | 1878 | |
93965878 NIS |
1879 | |
1880 | U32 | |
864dbfa3 | 1881 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1882 | { |
efaf3674 | 1883 | dVAR; |
22846ab4 | 1884 | I32 retval = 0; |
efaf3674 | 1885 | SV* retsv; |
93965878 | 1886 | |
7918f24d NC |
1887 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1888 | ||
36925d9e | 1889 | retsv = magic_methcall1(sv, mg, SV_CONST(FETCHSIZE), 0, 1, NULL); |
efaf3674 DM |
1890 | if (retsv) { |
1891 | retval = SvIV(retsv)-1; | |
22846ab4 AB |
1892 | if (retval < -1) |
1893 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1894 | } |
22846ab4 | 1895 | return (U32) retval; |
93965878 NIS |
1896 | } |
1897 | ||
cea2e8a9 GS |
1898 | int |
1899 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1900 | { |
efaf3674 | 1901 | dVAR; |
463ee0b2 | 1902 | |
7918f24d NC |
1903 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1904 | ||
36925d9e | 1905 | Perl_magic_methcall(aTHX_ sv, mg, SV_CONST(CLEAR), G_DISCARD, 0); |
463ee0b2 LW |
1906 | return 0; |
1907 | } | |
1908 | ||
1909 | int | |
864dbfa3 | 1910 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1911 | { |
efaf3674 DM |
1912 | dVAR; |
1913 | SV* ret; | |
463ee0b2 | 1914 | |
7918f24d NC |
1915 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1916 | ||
36925d9e RZ |
1917 | ret = SvOK(key) ? Perl_magic_methcall(aTHX_ sv, mg, SV_CONST(NEXTKEY), 0, 1, key) |
1918 | : Perl_magic_methcall(aTHX_ sv, mg, SV_CONST(FIRSTKEY), 0, 0); | |
efaf3674 DM |
1919 | if (ret) |
1920 | sv_setsv(key,ret); | |
79072805 LW |
1921 | return 0; |
1922 | } | |
1923 | ||
1924 | int | |
1146e912 | 1925 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1926 | { |
7918f24d NC |
1927 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1928 | ||
36925d9e | 1929 | return magic_methpack(sv,mg,SV_CONST(EXISTS)); |
ac27b0f5 | 1930 | } |
a0d0e21e | 1931 | |
a3bcc51e TP |
1932 | SV * |
1933 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1934 | { | |
efaf3674 | 1935 | dVAR; |
5fcbf73d | 1936 | SV *retval; |
ad64d0ec NC |
1937 | SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg); |
1938 | HV * const pkg = SvSTASH((const SV *)SvRV(tied)); | |
a3bcc51e | 1939 | |
7918f24d NC |
1940 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
1941 | ||
a3bcc51e TP |
1942 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1943 | SV *key; | |
bfcb3514 | 1944 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1945 | /* we are in an iteration so the hash cannot be empty */ |
1946 | return &PL_sv_yes; | |
1947 | /* no xhv_eiter so now use FIRSTKEY */ | |
1948 | key = sv_newmortal(); | |
ad64d0ec | 1949 | magic_nextpack(MUTABLE_SV(hv), mg, key); |
bfcb3514 | 1950 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1951 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1952 | } | |
1953 | ||
1954 | /* there is a SCALAR method that we can call */ | |
36925d9e | 1955 | retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(hv), mg, SV_CONST(SCALAR), 0, 0); |
efaf3674 | 1956 | if (!retval) |
5fcbf73d | 1957 | retval = &PL_sv_undef; |
a3bcc51e TP |
1958 | return retval; |
1959 | } | |
1960 | ||
a0d0e21e | 1961 | int |
864dbfa3 | 1962 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1963 | { |
97aff369 | 1964 | dVAR; |
089b5c60 | 1965 | SV **svp; |
7918f24d NC |
1966 | |
1967 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
1968 | ||
089b5c60 NC |
1969 | /* The magic ptr/len for the debugger's hash should always be an SV. */ |
1970 | if (UNLIKELY(mg->mg_len != HEf_SVKEY)) { | |
1971 | Perl_croak(aTHX_ "panic: magic_setdbline len=%"IVdf", ptr='%s'", | |
1972 | mg->mg_len, mg->mg_ptr); | |
1973 | } | |
1974 | ||
1975 | /* Use sv_2iv instead of SvIV() as the former generates smaller code, and | |
1976 | setting/clearing debugger breakpoints is not a hot path. */ | |
43e4250a FC |
1977 | svp = av_fetch(MUTABLE_AV(mg->mg_obj), |
1978 | sv_2iv(MUTABLE_SV((mg)->mg_ptr)), FALSE); | |
089b5c60 | 1979 | |
8772537c AL |
1980 | if (svp && SvIOKp(*svp)) { |
1981 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
1982 | if (o) { | |
7bbbc3c0 NC |
1983 | #ifdef PERL_DEBUG_READONLY_OPS |
1984 | Slab_to_rw(OpSLAB(o)); | |
1985 | #endif | |
8772537c | 1986 | /* set or clear breakpoint in the relevant control op */ |
089b5c60 | 1987 | if (SvTRUE(sv)) |
8772537c AL |
1988 | o->op_flags |= OPf_SPECIAL; |
1989 | else | |
1990 | o->op_flags &= ~OPf_SPECIAL; | |
7bbbc3c0 NC |
1991 | #ifdef PERL_DEBUG_READONLY_OPS |
1992 | Slab_to_ro(OpSLAB(o)); | |
1993 | #endif | |
8772537c | 1994 | } |
5df8de69 | 1995 | } |
79072805 LW |
1996 | return 0; |
1997 | } | |
1998 | ||
1999 | int | |
8772537c | 2000 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 2001 | { |
97aff369 | 2002 | dVAR; |
502c6561 | 2003 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2004 | |
2005 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
2006 | ||
83bf042f | 2007 | if (obj) { |
e1dccc0d | 2008 | sv_setiv(sv, AvFILL(obj)); |
83bf042f | 2009 | } else { |
d4a823b3 | 2010 | sv_setsv(sv, NULL); |
83bf042f | 2011 | } |
79072805 LW |
2012 | return 0; |
2013 | } | |
2014 | ||
2015 | int | |
864dbfa3 | 2016 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2017 | { |
97aff369 | 2018 | dVAR; |
502c6561 | 2019 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2020 | |
2021 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
2022 | ||
83bf042f | 2023 | if (obj) { |
e1dccc0d | 2024 | av_fill(obj, SvIV(sv)); |
83bf042f | 2025 | } else { |
a2a5de95 NC |
2026 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
2027 | "Attempt to set length of freed array"); | |
83bf042f NC |
2028 | } |
2029 | return 0; | |
2030 | } | |
2031 | ||
2032 | int | |
83f29afa VP |
2033 | Perl_magic_cleararylen_p(pTHX_ SV *sv, MAGIC *mg) |
2034 | { | |
2035 | dVAR; | |
2036 | ||
2037 | PERL_ARGS_ASSERT_MAGIC_CLEARARYLEN_P; | |
2038 | PERL_UNUSED_ARG(sv); | |
2039 | ||
2040 | /* Reset the iterator when the array is cleared */ | |
3565fbf3 VP |
2041 | #if IVSIZE == I32SIZE |
2042 | *((IV *) &(mg->mg_len)) = 0; | |
2043 | #else | |
83f29afa VP |
2044 | if (mg->mg_ptr) |
2045 | *((IV *) mg->mg_ptr) = 0; | |
3565fbf3 | 2046 | #endif |
83f29afa VP |
2047 | |
2048 | return 0; | |
2049 | } | |
2050 | ||
2051 | int | |
83bf042f NC |
2052 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) |
2053 | { | |
97aff369 | 2054 | dVAR; |
7918f24d NC |
2055 | |
2056 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; | |
53c1dcc0 | 2057 | PERL_UNUSED_ARG(sv); |
7918f24d | 2058 | |
94f3782b DM |
2059 | /* during global destruction, mg_obj may already have been freed */ |
2060 | if (PL_in_clean_all) | |
1ea47f64 | 2061 | return 0; |
94f3782b | 2062 | |
83bf042f NC |
2063 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
2064 | ||
2065 | if (mg) { | |
2066 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
2067 | reference. Hence the we (the array) are about to go away with it | |
2068 | still pointing at us. Clear its pointer, else it would be pointing | |
2069 | at free memory. See the comment in sv_magic about reference loops, | |
2070 | and why it can't own a reference to us. */ | |
2071 | mg->mg_obj = 0; | |
2072 | } | |
a0d0e21e LW |
2073 | return 0; |
2074 | } | |
2075 | ||
2076 | int | |
864dbfa3 | 2077 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2078 | { |
97aff369 | 2079 | dVAR; |
16eb5365 | 2080 | SV* const lsv = LvTARG(sv); |
96c2a8ff | 2081 | MAGIC * const found = mg_find_mglob(lsv); |
7918f24d NC |
2082 | |
2083 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
16eb5365 | 2084 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2085 | |
6174b39a FC |
2086 | if (found && found->mg_len != -1) { |
2087 | STRLEN i = found->mg_len; | |
25fdce4a | 2088 | if (found->mg_flags & MGf_BYTES && DO_UTF8(lsv)) |
6174b39a FC |
2089 | i = sv_pos_b2u_flags(lsv, i, SV_GMAGIC|SV_CONST_RETURN); |
2090 | sv_setuv(sv, i); | |
a0d0e21e | 2091 | return 0; |
a0d0e21e | 2092 | } |
35995e5c | 2093 | sv_setsv(sv,NULL); |
a0d0e21e LW |
2094 | return 0; |
2095 | } | |
2096 | ||
2097 | int | |
864dbfa3 | 2098 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2099 | { |
97aff369 | 2100 | dVAR; |
16eb5365 | 2101 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
2102 | SSize_t pos; |
2103 | STRLEN len; | |
c00206c8 | 2104 | STRLEN ulen = 0; |
53d44271 | 2105 | MAGIC* found; |
aec43834 | 2106 | const char *s; |
a0d0e21e | 2107 | |
7918f24d | 2108 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
16eb5365 | 2109 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2110 | |
96c2a8ff | 2111 | found = mg_find_mglob(lsv); |
3881461a | 2112 | if (!found) { |
a0d0e21e LW |
2113 | if (!SvOK(sv)) |
2114 | return 0; | |
96c2a8ff | 2115 | found = sv_magicext_mglob(lsv); |
a0d0e21e LW |
2116 | } |
2117 | else if (!SvOK(sv)) { | |
3881461a | 2118 | found->mg_len = -1; |
a0d0e21e LW |
2119 | return 0; |
2120 | } | |
aec43834 | 2121 | s = SvPV_const(lsv, len); |
a0d0e21e | 2122 | |
e1dccc0d | 2123 | pos = SvIV(sv); |
a0ed51b3 | 2124 | |
7e2040f0 | 2125 | if (DO_UTF8(lsv)) { |
aec43834 | 2126 | ulen = sv_or_pv_len_utf8(lsv, s, len); |
a0ed51b3 LW |
2127 | if (ulen) |
2128 | len = ulen; | |
a0ed51b3 LW |
2129 | } |
2130 | ||
a0d0e21e LW |
2131 | if (pos < 0) { |
2132 | pos += len; | |
2133 | if (pos < 0) | |
2134 | pos = 0; | |
2135 | } | |
eb160463 | 2136 | else if (pos > (SSize_t)len) |
a0d0e21e | 2137 | pos = len; |
a0ed51b3 | 2138 | |
3881461a | 2139 | found->mg_len = pos; |
25fdce4a | 2140 | found->mg_flags &= ~(MGf_MINMATCH|MGf_BYTES); |
a0d0e21e | 2141 | |
79072805 LW |
2142 | return 0; |
2143 | } | |
2144 | ||
2145 | int | |
864dbfa3 | 2146 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2147 | { |
2148 | STRLEN len; | |
35a4481c | 2149 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2150 | const char * const tmps = SvPV_const(lsv,len); |
777f7c56 EB |
2151 | STRLEN offs = LvTARGOFF(sv); |
2152 | STRLEN rem = LvTARGLEN(sv); | |
83f78d1a FC |
2153 | const bool negoff = LvFLAGS(sv) & 1; |
2154 | const bool negrem = LvFLAGS(sv) & 2; | |
7918f24d NC |
2155 | |
2156 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2157 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2158 | |
83f78d1a | 2159 | if (!translate_substr_offsets( |
4ddea69a | 2160 | SvUTF8(lsv) ? sv_or_pv_len_utf8(lsv, tmps, len) : len, |
83f78d1a FC |
2161 | negoff ? -(IV)offs : (IV)offs, !negoff, |
2162 | negrem ? -(IV)rem : (IV)rem, !negrem, &offs, &rem | |
2163 | )) { | |
2164 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string"); | |
2165 | sv_setsv_nomg(sv, &PL_sv_undef); | |
2166 | return 0; | |
2167 | } | |
2168 | ||
9aa983d2 | 2169 | if (SvUTF8(lsv)) |
4ddea69a | 2170 | offs = sv_or_pv_pos_u2b(lsv, tmps, offs, &rem); |
1c900557 | 2171 | sv_setpvn(sv, tmps + offs, rem); |
9aa983d2 | 2172 | if (SvUTF8(lsv)) |
2ef4b674 | 2173 | SvUTF8_on(sv); |
6ff81951 GS |
2174 | return 0; |
2175 | } | |
2176 | ||
2177 | int | |
864dbfa3 | 2178 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2179 | { |
97aff369 | 2180 | dVAR; |
83f78d1a | 2181 | STRLEN len, lsv_len, oldtarglen, newtarglen; |
5fcbf73d | 2182 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2183 | SV * const lsv = LvTARG(sv); |
777f7c56 EB |
2184 | STRLEN lvoff = LvTARGOFF(sv); |
2185 | STRLEN lvlen = LvTARGLEN(sv); | |
83f78d1a FC |
2186 | const bool negoff = LvFLAGS(sv) & 1; |
2187 | const bool neglen = LvFLAGS(sv) & 2; | |
7918f24d NC |
2188 | |
2189 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2190 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2191 | |
a74fb2cd FC |
2192 | SvGETMAGIC(lsv); |
2193 | if (SvROK(lsv)) | |
2194 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), | |
2195 | "Attempt to use reference as lvalue in substr" | |
2196 | ); | |
fc061ed8 FC |
2197 | SvPV_force_nomg(lsv,lsv_len); |
2198 | if (SvUTF8(lsv)) lsv_len = sv_len_utf8_nomg(lsv); | |
83f78d1a FC |
2199 | if (!translate_substr_offsets( |
2200 | lsv_len, | |
2201 | negoff ? -(IV)lvoff : (IV)lvoff, !negoff, | |
2202 | neglen ? -(IV)lvlen : (IV)lvlen, !neglen, &lvoff, &lvlen | |
2203 | )) | |
2204 | Perl_croak(aTHX_ "substr outside of string"); | |
2205 | oldtarglen = lvlen; | |
1aa99e6b | 2206 | if (DO_UTF8(sv)) { |
73a087f0 | 2207 | sv_utf8_upgrade_nomg(lsv); |
d931b1be | 2208 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
a74fb2cd | 2209 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
7a385470 | 2210 | newtarglen = sv_or_pv_len_utf8(sv, tmps, len); |
9aa983d2 JH |
2211 | SvUTF8_on(lsv); |
2212 | } | |
0d336106 | 2213 | else if (SvUTF8(lsv)) { |
5fcbf73d | 2214 | const char *utf8; |
d931b1be | 2215 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
83f78d1a | 2216 | newtarglen = len; |
5fcbf73d | 2217 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
a74fb2cd | 2218 | sv_insert_flags(lsv, lvoff, lvlen, utf8, len, 0); |
5fcbf73d | 2219 | Safefree(utf8); |
1aa99e6b | 2220 | } |
b76f3ce2 | 2221 | else { |
a74fb2cd | 2222 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2223 | newtarglen = len; |
b76f3ce2 | 2224 | } |
83f78d1a FC |
2225 | if (!neglen) LvTARGLEN(sv) = newtarglen; |
2226 | if (negoff) LvTARGOFF(sv) += newtarglen - oldtarglen; | |
b76f3ce2 | 2227 | |
79072805 LW |
2228 | return 0; |
2229 | } | |
2230 | ||
2231 | int | |
864dbfa3 | 2232 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2233 | { |
97aff369 | 2234 | dVAR; |
7918f24d NC |
2235 | |
2236 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; | |
8772537c | 2237 | PERL_UNUSED_ARG(sv); |
9a9b5ec9 DM |
2238 | #ifdef NO_TAINT_SUPPORT |
2239 | PERL_UNUSED_ARG(mg); | |
2240 | #endif | |
7918f24d | 2241 | |
27cc343c | 2242 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2243 | return 0; |
2244 | } | |
2245 | ||
2246 | int | |
864dbfa3 | 2247 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2248 | { |
97aff369 | 2249 | dVAR; |
7918f24d NC |
2250 | |
2251 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; | |
8772537c | 2252 | PERL_UNUSED_ARG(sv); |
7918f24d | 2253 | |
b01e650a | 2254 | /* update taint status */ |
284167a5 | 2255 | if (TAINT_get) |
b01e650a DM |
2256 | mg->mg_len |= 1; |
2257 | else | |
2258 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2259 | return 0; |
2260 | } | |
2261 | ||
2262 | int | |
864dbfa3 | 2263 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2264 | { |
35a4481c | 2265 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2266 | |
2267 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2268 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2269 | |
2e9e14dd | 2270 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 | 2271 | |
6ff81951 GS |
2272 | return 0; |
2273 | } | |
2274 | ||
2275 | int | |
864dbfa3 | 2276 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2277 | { |
7918f24d | 2278 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2279 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2280 | do_vecset(sv); /* XXX slurp this routine */ |
2281 | return 0; | |
2282 | } | |
2283 | ||
13733cde FC |
2284 | SV * |
2285 | Perl_defelem_target(pTHX_ SV *sv, MAGIC *mg) | |
5f05dabc | 2286 | { |
97aff369 | 2287 | dVAR; |
a0714e2c | 2288 | SV *targ = NULL; |
13733cde FC |
2289 | PERL_ARGS_ASSERT_DEFELEM_TARGET; |
2290 | if (!mg) mg = mg_find(sv, PERL_MAGIC_defelem); | |
2291 | assert(mg); | |
5f05dabc | 2292 | if (LvTARGLEN(sv)) { |
68dc0745 | 2293 | if (mg->mg_obj) { |
8772537c | 2294 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2295 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0); |
6d822dc4 MS |
2296 | if (he) |
2297 | targ = HeVAL(he); | |
68dc0745 | 2298 | } |
bbfdc870 | 2299 | else if (LvSTARGOFF(sv) >= 0) { |
502c6561 | 2300 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
bbfdc870 | 2301 | if (LvSTARGOFF(sv) <= AvFILL(av)) |
ca58dfd9 FC |
2302 | { |
2303 | if (SvRMAGICAL(av)) { | |
2304 | SV * const * const svp = av_fetch(av, LvSTARGOFF(sv), 0); | |
2305 | targ = svp ? *svp : NULL; | |
2306 | } | |
2307 | else | |
bbfdc870 | 2308 | targ = AvARRAY(av)[LvSTARGOFF(sv)]; |
ca58dfd9 | 2309 | } |
68dc0745 | 2310 | } |
46da273f | 2311 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2312 | /* somebody else defined it for us */ |
2313 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2314 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2315 | LvTARGLEN(sv) = 0; |
2316 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2317 | mg->mg_obj = NULL; |
68dc0745 | 2318 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2319 | } | |
13733cde | 2320 | return targ; |
5f05dabc | 2321 | } |
71be2cbc | 2322 | else |
13733cde FC |
2323 | return LvTARG(sv); |
2324 | } | |
2325 | ||
2326 | int | |
2327 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) | |
2328 | { | |
2329 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2330 | ||
2331 | sv_setsv(sv, defelem_target(sv, mg)); | |
71be2cbc | 2332 | return 0; |
2333 | } | |
2334 | ||
2335 | int | |
864dbfa3 | 2336 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2337 | { |
7918f24d | 2338 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2339 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2340 | if (LvTARGLEN(sv)) |
68dc0745 | 2341 | vivify_defelem(sv); |
2342 | if (LvTARG(sv)) { | |
5f05dabc | 2343 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2344 | SvSETMAGIC(LvTARG(sv)); |
2345 | } | |
5f05dabc | 2346 | return 0; |
2347 | } | |
2348 | ||
71be2cbc | 2349 | void |
864dbfa3 | 2350 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2351 | { |
97aff369 | 2352 | dVAR; |
74e13ce4 | 2353 | MAGIC *mg; |
a0714e2c | 2354 | SV *value = NULL; |
71be2cbc | 2355 | |
7918f24d NC |
2356 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2357 | ||
14befaf4 | 2358 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2359 | return; |
68dc0745 | 2360 | if (mg->mg_obj) { |
8772537c | 2361 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2362 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0); |
6d822dc4 MS |
2363 | if (he) |
2364 | value = HeVAL(he); | |
3280af22 | 2365 | if (!value || value == &PL_sv_undef) |
be2597df | 2366 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2367 | } |
bbfdc870 FC |
2368 | else if (LvSTARGOFF(sv) < 0) |
2369 | Perl_croak(aTHX_ PL_no_aelem, LvSTARGOFF(sv)); | |
68dc0745 | 2370 | else { |
502c6561 | 2371 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
bbfdc870 | 2372 | if ((I32)LvTARGLEN(sv) < 0 && LvSTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2373 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2374 | else { |
bbfdc870 | 2375 | SV* const * const svp = av_fetch(av, LvSTARGOFF(sv), TRUE); |
031c6d82 | 2376 | if (!svp || !(value = *svp)) |
bbfdc870 | 2377 | Perl_croak(aTHX_ PL_no_aelem, LvSTARGOFF(sv)); |
68dc0745 | 2378 | } |
2379 | } | |
b37c2d43 | 2380 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2381 | SvREFCNT_dec(LvTARG(sv)); |
2382 | LvTARG(sv) = value; | |
71be2cbc | 2383 | LvTARGLEN(sv) = 0; |
68dc0745 | 2384 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2385 | mg->mg_obj = NULL; |
68dc0745 | 2386 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2387 | } |
2388 | ||
2389 | int | |
864dbfa3 | 2390 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2391 | { |
7918f24d | 2392 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
5648c0ae DM |
2393 | Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj)); |
2394 | return 0; | |
810b8aa5 GS |
2395 | } |
2396 | ||
2397 | int | |
864dbfa3 | 2398 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2399 | { |
7918f24d | 2400 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2401 | PERL_UNUSED_CONTEXT; |
0177730e | 2402 | PERL_UNUSED_ARG(sv); |
565764a8 | 2403 | mg->mg_len = -1; |
93a17b20 LW |
2404 | return 0; |
2405 | } | |
2406 | ||
2407 | int | |
864dbfa3 | 2408 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2409 | { |
35a4481c | 2410 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2411 | |
7918f24d NC |
2412 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2413 | ||
79072805 | 2414 | if (uf && uf->uf_set) |
24f81a43 | 2415 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2416 | return 0; |
2417 | } | |
2418 | ||
c277df42 | 2419 | int |
faf82a0b AE |
2420 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2421 | { | |
488344d2 | 2422 | const char type = mg->mg_type; |
7918f24d NC |
2423 | |
2424 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2425 | ||
488344d2 NC |
2426 | if (type == PERL_MAGIC_qr) { |
2427 | } else if (type == PERL_MAGIC_bm) { | |
2428 | SvTAIL_off(sv); | |
2429 | SvVALID_off(sv); | |
2430 | } else { | |
2431 | assert(type == PERL_MAGIC_fm); | |
488344d2 NC |
2432 | } |
2433 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2434 | } |
2435 | ||
7a4c00b4 | 2436 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2437 | int |
864dbfa3 | 2438 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2439 | { |
7918f24d NC |
2440 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2441 | ||
bbce6d69 | 2442 | /* |
838b5b74 | 2443 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2444 | * and vanished with a faint plop. |
2445 | */ | |
96a5add6 | 2446 | PERL_UNUSED_CONTEXT; |
8772537c | 2447 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2448 | if (mg->mg_ptr) { |
2449 | Safefree(mg->mg_ptr); | |
2450 | mg->mg_ptr = NULL; | |
565764a8 | 2451 | mg->mg_len = -1; |
7a4c00b4 | 2452 | } |
bbce6d69 | 2453 | return 0; |
2454 | } | |
7a4c00b4 | 2455 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2456 | |
7e8c5dac HS |
2457 | /* Just clear the UTF-8 cache data. */ |
2458 | int | |
2459 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2460 | { | |
7918f24d | 2461 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2462 | PERL_UNUSED_CONTEXT; |
8772537c | 2463 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2464 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2465 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2466 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2467 | return 0; | |
2468 | } | |
2469 | ||
bbce6d69 | 2470 | int |
864dbfa3 | 2471 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2472 | { |
97aff369 | 2473 | dVAR; |
eb578fdb KW |
2474 | const char *s; |
2475 | I32 paren; | |
2476 | const REGEXP * rx; | |
79072805 | 2477 | I32 i; |
8990e307 | 2478 | STRLEN len; |
125b9982 | 2479 | MAGIC *tmg; |
2fdbfb4d | 2480 | |
7918f24d NC |
2481 | PERL_ARGS_ASSERT_MAGIC_SET; |
2482 | ||
e91d8259 | 2483 | if (!mg->mg_ptr) { |
960b831f | 2484 | paren = mg->mg_len; |
1e05feb3 | 2485 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
e91d8259 | 2486 | setparen_got_rx: |
2fdbfb4d | 2487 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
1e05feb3 | 2488 | } else { |
2fdbfb4d AB |
2489 | /* Croak with a READONLY error when a numbered match var is |
2490 | * set without a previous pattern match. Unless it's C<local $1> | |
2491 | */ | |
e91d8259 | 2492 | croakparen: |
2fdbfb4d | 2493 | if (!PL_localizing) { |
cb077ed2 | 2494 | Perl_croak_no_modify(); |
2fdbfb4d AB |
2495 | } |
2496 | } | |
e91d8259 NC |
2497 | return 0; |
2498 | } | |
2499 | ||
2500 | switch (*mg->mg_ptr) { | |
748a9306 | 2501 | case '\001': /* ^A */ |
f2da823f FC |
2502 | if (SvOK(sv)) sv_copypv(PL_bodytarget, sv); |
2503 | else SvOK_off(PL_bodytarget); | |
64eff8b7 DM |
2504 | FmLINES(PL_bodytarget) = 0; |
2505 | if (SvPOK(PL_bodytarget)) { | |
2506 | char *s = SvPVX(PL_bodytarget); | |
2507 | while ( ((s = strchr(s, '\n'))) ) { | |
2508 | FmLINES(PL_bodytarget)++; | |
2509 | s++; | |
2510 | } | |
2511 | } | |
125b9982 | 2512 | /* mg_set() has temporarily made sv non-magical */ |
284167a5 | 2513 | if (TAINTING_get) { |
125b9982 NT |
2514 | if ((tmg = mg_find(sv,PERL_MAGIC_taint)) && tmg->mg_len & 1) |
2515 | SvTAINTED_on(PL_bodytarget); | |
2516 | else | |
2517 | SvTAINTED_off(PL_bodytarget); | |
2518 | } | |
748a9306 | 2519 | break; |
49460fe6 | 2520 | case '\003': /* ^C */ |
f2338a2e | 2521 | PL_minus_c = cBOOL(SvIV(sv)); |
49460fe6 NIS |
2522 | break; |
2523 | ||
79072805 | 2524 | case '\004': /* ^D */ |
b4ab917c | 2525 | #ifdef DEBUGGING |
b83604b4 | 2526 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2527 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
a58fb6f9 CS |
2528 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
2529 | dump_all_perl(!DEBUG_B_TEST); | |
b4ab917c | 2530 | #else |
38ab35f8 | 2531 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2532 | #endif |
79072805 | 2533 | break; |
28f23441 | 2534 | case '\005': /* ^E */ |
d0063567 | 2535 | if (*(mg->mg_ptr+1) == '\0') { |
e37778c2 | 2536 | #ifdef VMS |
38ab35f8 | 2537 | set_vaxc_errno(SvIV(sv)); |
e37778c2 NC |
2538 | #else |
2539 | # ifdef WIN32 | |
d0063567 | 2540 | SetLastError( SvIV(sv) ); |
e37778c2 NC |
2541 | # else |
2542 | # ifdef OS2 | |
38ab35f8 | 2543 | os2_setsyserrno(SvIV(sv)); |
e37778c2 | 2544 | # else |
d0063567 | 2545 | /* will anyone ever use this? */ |
38ab35f8 | 2546 | SETERRNO(SvIV(sv), 4); |
048c1ddf IZ |
2547 | # endif |
2548 | # endif | |
22fae026 | 2549 | #endif |
d0063567 DK |
2550 | } |
2551 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
ef8d46e8 | 2552 | SvREFCNT_dec(PL_encoding); |
d0063567 DK |
2553 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2554 | PL_encoding = newSVsv(sv); | |
2555 | } | |
2556 | else { | |
a0714e2c | 2557 | PL_encoding = NULL; |
d0063567 DK |
2558 | } |
2559 | } | |
2560 | break; | |
79072805 | 2561 | case '\006': /* ^F */ |
38ab35f8 | 2562 | PL_maxsysfd = SvIV(sv); |
79072805 | 2563 | break; |
a0d0e21e | 2564 | case '\010': /* ^H */ |
38ab35f8 | 2565 | PL_hints = SvIV(sv); |
a0d0e21e | 2566 | break; |
9d116dd7 | 2567 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2568 | Safefree(PL_inplace); |
bd61b366 | 2569 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2570 | break; |
d9bad346 FC |
2571 | case '\016': /* ^N */ |
2572 | if (PL_curpm && (rx = PM_GETRE(PL_curpm)) | |
2573 | && (paren = RX_LASTCLOSEPAREN(rx))) goto setparen_got_rx; | |
2574 | goto croakparen; | |
28f23441 | 2575 | case '\017': /* ^O */ |
ac27b0f5 | 2576 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2577 | Safefree(PL_osname); |
bd61b366 | 2578 | PL_osname = NULL; |
3511154c DM |
2579 | if (SvOK(sv)) { |
2580 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2581 | PL_osname = savesvpv(sv); |
3511154c | 2582 | } |
ac27b0f5 NIS |
2583 | } |
2584 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2585 | STRLEN len; |
2586 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2587 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 | 2588 | SV *tmp; |
8b850bd5 NC |
2589 | |
2590 | ||
2591 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
f747ebd6 | 2592 | PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; |
8b850bd5 NC |
2593 | |
2594 | /* Opening for input is more common than opening for output, so | |
2595 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 | 2596 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
f747ebd6 Z |
2597 | SvUTF8(sv)) |
2598 | : newSVpvs_flags("", SvUTF8(sv)); | |
2599 | (void)hv_stores(GvHV(PL_hintgv), "open>", tmp); | |
2600 | mg_set(tmp); | |
8b850bd5 | 2601 | |
f747ebd6 Z |
2602 | tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len, |
2603 | SvUTF8(sv)); | |
2604 | (void)hv_stores(GvHV(PL_hintgv), "open<", tmp); | |
2605 | mg_set(tmp); | |
ac27b0f5 | 2606 | } |
28f23441 | 2607 | break; |
79072805 | 2608 | case '\020': /* ^P */ |
2fdbfb4d AB |
2609 | PL_perldb = SvIV(sv); |
2610 | if (PL_perldb && !PL_DBsingle) | |
2611 | init_debugger(); | |
9b9e0be4 | 2612 | break; |
79072805 | 2613 | case '\024': /* ^T */ |
88e89b8a | 2614 | #ifdef BIG_TIME |
6b88bc9c | 2615 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2616 | #else |
38ab35f8 | 2617 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2618 | #endif |
79072805 | 2619 | break; |
e07ea26a NC |
2620 | case '\025': /* ^UTF8CACHE */ |
2621 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2622 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2623 | } | |
2624 | break; | |
fde18df1 | 2625 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2626 | if (*(mg->mg_ptr+1) == '\0') { |
2627 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2628 | i = SvIV(sv); |
ac27b0f5 | 2629 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2630 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2631 | } |
599cee73 | 2632 | } |
0a378802 | 2633 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2634 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
7e4f0450 FC |
2635 | if (!SvPOK(sv)) { |
2636 | PL_compiling.cop_warnings = pWARN_STD; | |
d775746e GS |
2637 | break; |
2638 | } | |
f4fc7782 | 2639 | { |
b5477537 | 2640 | STRLEN len, i; |
d3a7d8c7 | 2641 | int accumulate = 0 ; |
f4fc7782 | 2642 | int any_fatals = 0 ; |
b83604b4 | 2643 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2644 | for (i = 0 ; i < len ; ++i) { |
2645 | accumulate |= ptr[i] ; | |
2646 | any_fatals |= (ptr[i] & 0xAA) ; | |
2647 | } | |
4243c432 NC |
2648 | if (!accumulate) { |
2649 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2650 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2651 | PL_compiling.cop_warnings = pWARN_NONE; | |
2652 | } | |
72dc9ed5 | 2653 | /* Yuck. I can't see how to abstract this: */ |
2f3f0b56 KW |
2654 | else if (isWARN_on( |
2655 | ((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2656 | WARN_ALL) | |
2657 | && !any_fatals) | |
2658 | { | |
4243c432 NC |
2659 | if (!specialWARN(PL_compiling.cop_warnings)) |
2660 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2661 | PL_compiling.cop_warnings = pWARN_ALL; |
2662 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2663 | } |
d3a7d8c7 | 2664 | else { |
72dc9ed5 NC |
2665 | STRLEN len; |
2666 | const char *const p = SvPV_const(sv, len); | |
2667 | ||
2668 | PL_compiling.cop_warnings | |
8ee4cf24 | 2669 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2670 | p, len); |
2671 | ||
d3a7d8c7 GS |
2672 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2673 | PL_dowarn |= G_WARN_ONCE ; | |
2674 | } | |
f4fc7782 | 2675 | |
d3a7d8c7 | 2676 | } |
4438c4b7 | 2677 | } |
971a9dd3 | 2678 | } |
79072805 LW |
2679 | break; |
2680 | case '.': | |
3280af22 NIS |
2681 | if (PL_localizing) { |
2682 | if (PL_localizing == 1) | |
7766f137 | 2683 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2684 | } |
3280af22 | 2685 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2686 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2687 | break; |
2688 | case '^': | |
acbe1b9d FC |
2689 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2690 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2691 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2692 | break; |
2693 | case '~': | |
acbe1b9d FC |
2694 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2695 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2696 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2697 | break; |
2698 | case '=': | |
acbe1b9d | 2699 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2700 | break; |
2701 | case '-': | |
acbe1b9d FC |
2702 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
2703 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
099be4f1 | 2704 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 LW |
2705 | break; |
2706 | case '%': | |
acbe1b9d | 2707 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2708 | break; |
2709 | case '|': | |
4b65379b | 2710 | { |
099be4f1 | 2711 | IO * const io = GvIO(PL_defoutgv); |
720f287d AB |
2712 | if(!io) |
2713 | break; | |
38ab35f8 | 2714 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2715 | IoFLAGS(io) &= ~IOf_FLUSH; |
2716 | else { | |
2717 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2718 | PerlIO *ofp = IoOFP(io); | |
2719 | if (ofp) | |
2720 | (void)PerlIO_flush(ofp); | |
2721 | IoFLAGS(io) |= IOf_FLUSH; | |
2722 | } | |
2723 | } | |
79072805 LW |
2724 | } |
2725 | break; | |
79072805 | 2726 | case '/': |
3280af22 | 2727 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2728 | PL_rs = newSVsv(sv); |
79072805 LW |
2729 | break; |
2730 | case '\\': | |
ef8d46e8 | 2731 | SvREFCNT_dec(PL_ors_sv); |
6bc2995b | 2732 | if (SvOK(sv)) { |
7889fe52 | 2733 | PL_ors_sv = newSVsv(sv); |
009c130f | 2734 | } |
e3c19b7b | 2735 | else { |
a0714e2c | 2736 | PL_ors_sv = NULL; |
e3c19b7b | 2737 | } |
79072805 | 2738 | break; |
7d69d4a6 FC |
2739 | case '[': |
2740 | if (SvIV(sv) != 0) | |
2741 | Perl_croak(aTHX_ "Assigning non-zero to $[ is no longer possible"); | |
2742 | break; | |
79072805 | 2743 | case '?': |
ff0cee69 | 2744 | #ifdef COMPLEX_STATUS |
6b88bc9c | 2745 | if (PL_localizing == 2) { |
41cb7b2b | 2746 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
2747 | PL_statusvalue = LvTARGOFF(sv); |
2748 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2749 | } |
2750 | else | |
2751 | #endif | |
2752 | #ifdef VMSISH_STATUS | |
2753 | if (VMSISH_STATUS) | |
fb38d079 | 2754 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2755 | else |
2756 | #endif | |
38ab35f8 | 2757 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2758 | break; |
2759 | case '!': | |
93189314 JH |
2760 | { |
2761 | #ifdef VMS | |
2762 | # define PERL_VMS_BANG vaxc$errno | |
2763 | #else | |
2764 | # define PERL_VMS_BANG 0 | |
2765 | #endif | |
27329181 | 2766 | #if defined(WIN32) && ! defined(UNDER_CE) |
c9beaf97 SH |
2767 | SETERRNO(win32_get_errno(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0), |
2768 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); | |
2769 | #else | |
91487cfc | 2770 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 | 2771 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
c9beaf97 | 2772 | #endif |
93189314 | 2773 | } |
79072805 LW |
2774 | break; |
2775 | case '<': | |
985213f2 | 2776 | { |
dfff4baf | 2777 | const Uid_t new_uid = SvUID(sv); |
985213f2 | 2778 | PL_delaymagic_uid = new_uid; |
3280af22 NIS |
2779 | if (PL_delaymagic) { |
2780 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2781 | break; /* don't do magic till later */ |
2782 | } | |
2783 | #ifdef HAS_SETRUID | |
dfff4baf | 2784 | (void)setruid(new_uid); |
79072805 LW |
2785 | #else |
2786 | #ifdef HAS_SETREUID | |
dfff4baf | 2787 | (void)setreuid(new_uid, (Uid_t)-1); |
748a9306 | 2788 | #else |
85e6fe83 | 2789 | #ifdef HAS_SETRESUID |
dfff4baf | 2790 | (void)setresuid(new_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2791 | #else |
985213f2 | 2792 | if (new_uid == PerlProc_geteuid()) { /* special case $< = $> */ |
75870ed3 | 2793 | #ifdef PERL_DARWIN |
2794 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
985213f2 | 2795 | if (new_uid != 0 && PerlProc_getuid() == 0) |
75870ed3 | 2796 | (void)PerlProc_setuid(0); |
2797 | #endif | |
985213f2 | 2798 | (void)PerlProc_setuid(new_uid); |
75870ed3 | 2799 | } else { |
cea2e8a9 | 2800 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2801 | } |
79072805 LW |
2802 | #endif |
2803 | #endif | |
85e6fe83 | 2804 | #endif |
79072805 | 2805 | break; |
985213f2 | 2806 | } |
79072805 | 2807 | case '>': |
985213f2 | 2808 | { |
dfff4baf | 2809 | const Uid_t new_euid = SvUID(sv); |
985213f2 | 2810 | PL_delaymagic_euid = new_euid; |
3280af22 NIS |
2811 | if (PL_delaymagic) { |
2812 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2813 | break; /* don't do magic till later */ |
2814 | } | |
2815 | #ifdef HAS_SETEUID | |
dfff4baf | 2816 | (void)seteuid(new_euid); |
79072805 LW |
2817 | #else |
2818 | #ifdef HAS_SETREUID | |
dfff4baf | 2819 | (void)setreuid((Uid_t)-1, new_euid); |
85e6fe83 LW |
2820 | #else |
2821 | #ifdef HAS_SETRESUID | |
dfff4baf | 2822 | (void)setresuid((Uid_t)-1, new_euid, (Uid_t)-1); |
79072805 | 2823 | #else |
985213f2 | 2824 | if (new_euid == PerlProc_getuid()) /* special case $> = $< */ |
382669a9 | 2825 | PerlProc_setuid(new_euid); |
a0d0e21e | 2826 | else { |
cea2e8a9 | 2827 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2828 | } |
79072805 LW |
2829 | #endif |
2830 | #endif | |
85e6fe83 | 2831 | #endif |
79072805 | 2832 | break; |
985213f2 | 2833 | } |
79072805 | 2834 | case '(': |
985213f2 | 2835 | { |
dfff4baf | 2836 | const Gid_t new_gid = SvGID(sv); |
985213f2 | 2837 | PL_delaymagic_gid = new_gid; |
3280af22 NIS |
2838 | if (PL_delaymagic) { |
2839 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2840 | break; /* don't do magic till later */ |
2841 | } | |
2842 | #ifdef HAS_SETRGID | |
dfff4baf | 2843 | (void)setrgid(new_gid); |
79072805 LW |
2844 | #else |
2845 | #ifdef HAS_SETREGID | |
dfff4baf | 2846 | (void)setregid(new_gid, (Gid_t)-1); |
85e6fe83 LW |
2847 | #else |
2848 | #ifdef HAS_SETRESGID | |
dfff4baf | 2849 | (void)setresgid(new_gid, (Gid_t)-1, (Gid_t) -1); |
79072805 | 2850 | #else |
985213f2 AB |
2851 | if (new_gid == PerlProc_getegid()) /* special case $( = $) */ |
2852 | (void)PerlProc_setgid(new_gid); | |
748a9306 | 2853 | else { |
cea2e8a9 | 2854 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2855 | } |
79072805 LW |
2856 | #endif |
2857 | #endif | |
85e6fe83 | 2858 | #endif |
79072805 | 2859 | break; |
985213f2 | 2860 | } |
79072805 | 2861 | case ')': |
985213f2 | 2862 | { |
dfff4baf | 2863 | Gid_t new_egid; |
5cd24f17 | 2864 | #ifdef HAS_SETGROUPS |
2865 | { | |
b83604b4 | 2866 | const char *p = SvPV_const(sv, len); |
757f63d8 | 2867 | Groups_t *gary = NULL; |
fb4089e0 | 2868 | #ifdef _SC_NGROUPS_MAX |
2869 | int maxgrp = sysconf(_SC_NGROUPS_MAX); | |
2870 | ||
2871 | if (maxgrp < 0) | |
2872 | maxgrp = NGROUPS; | |
2873 | #else | |
2874 | int maxgrp = NGROUPS; | |
2875 | #endif | |
757f63d8 SP |
2876 | |
2877 | while (isSPACE(*p)) | |
2878 | ++p; | |
dfff4baf | 2879 | new_egid = (Gid_t)Atol(p); |
fb4089e0 | 2880 | for (i = 0; i < maxgrp; ++i) { |
757f63d8 SP |
2881 | while (*p && !isSPACE(*p)) |
2882 | ++p; | |
2883 | while (isSPACE(*p)) | |
2884 | ++p; | |
2885 | if (!*p) | |
2886 | break; | |
2887 | if(!gary) | |
2888 | Newx(gary, i + 1, Groups_t); | |
2889 | else | |
2890 | Renew(gary, i + 1, Groups_t); | |
dfff4baf | 2891 | gary[i] = (Groups_t)Atol(p); |
757f63d8 SP |
2892 | } |
2893 | if (i) | |
2894 | (void)setgroups(i, gary); | |
f5a63d97 | 2895 | Safefree(gary); |
5cd24f17 | 2896 | } |
2897 | #else /* HAS_SETGROUPS */ | |
dfff4baf | 2898 | new_egid = SvGID(sv); |
5cd24f17 | 2899 | #endif /* HAS_SETGROUPS */ |
985213f2 | 2900 | PL_delaymagic_egid = new_egid; |
3280af22 NIS |
2901 | if (PL_delaymagic) { |
2902 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2903 | break; /* don't do magic till later */ |
2904 | } | |
2905 | #ifdef HAS_SETEGID | |
dfff4baf | 2906 | (void)setegid(new_egid); |
79072805 LW |
2907 | #else |
2908 | #ifdef HAS_SETREGID | |
dfff4baf | 2909 | (void)setregid((Gid_t)-1, new_egid); |
85e6fe83 LW |
2910 | #else |
2911 | #ifdef HAS_SETRESGID | |
dfff4baf | 2912 | (void)setresgid((Gid_t)-1, new_egid, (Gid_t)-1); |
79072805 | 2913 | #else |
985213f2 AB |
2914 | if (new_egid == PerlProc_getgid()) /* special case $) = $( */ |
2915 | (void)PerlProc_setgid(new_egid); | |
748a9306 | 2916 | else { |
cea2e8a9 | 2917 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2918 | } |
79072805 LW |
2919 | #endif |
2920 | #endif | |
85e6fe83 | 2921 | #endif |
79072805 | 2922 | break; |
985213f2 | 2923 | } |
79072805 | 2924 | case ':': |
2d8e6c8d | 2925 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2926 | break; |
9cdac2a2 FC |
2927 | case '$': /* $$ */ |
2928 | /* Store the pid in mg->mg_obj so we can tell when a fork has | |
2929 | occurred. mg->mg_obj points to *$ by default, so clear it. */ | |
2930 | if (isGV(mg->mg_obj)) { | |
2931 | if (mg->mg_flags & MGf_REFCOUNTED) /* probably never true */ | |
2932 | SvREFCNT_dec(mg->mg_obj); | |
2933 | mg->mg_flags |= MGf_REFCOUNTED; | |
2934 | mg->mg_obj = newSViv((IV)PerlProc_getpid()); | |
2935 | } | |
2936 | else sv_setiv(mg->mg_obj, (IV)PerlProc_getpid()); | |
2937 | break; | |
79072805 | 2938 | case '0': |
e2975953 | 2939 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2940 | #ifdef HAS_SETPROCTITLE |
2941 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2942 | * show a string from the process struct and provide | |
2943 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2944 | if (PL_origalen != 1) { |
b83604b4 | 2945 | s = SvPV_const(sv, len); |
98b76f99 | 2946 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2947 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2948 | * but not the "(perl) suffix from the ps(1) |
2949 | * output, because that's what ps(1) shows if the | |
2950 | * argv[] is modified. */ | |
6f2ad931 | 2951 | setproctitle("-%s", s); |
9aad2c0e | 2952 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2953 | /* This doesn't really work if you assume that |
2954 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2955 | * because in ps(1) output the result will be like | |
2956 | * sprintf("perl: %s (perl)", s) | |
2957 | * I guess this is a security feature: | |
2958 | * one (a user process) cannot get rid of the original name. | |
2959 | * --jhi */ | |
2960 | setproctitle("%s", s); | |
2961 | # endif | |
2962 | } | |
9d3968b2 | 2963 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2964 | if (PL_origalen != 1) { |
17aa7f3d | 2965 | union pstun un; |
b83604b4 | 2966 | s = SvPV_const(sv, len); |
6867be6d | 2967 | un.pst_command = (char *)s; |
17aa7f3d JH |
2968 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2969 | } | |
9d3968b2 | 2970 | #else |
2d2af554 GA |
2971 | if (PL_origalen > 1) { |
2972 | /* PL_origalen is set in perl_parse(). */ | |
2973 | s = SvPV_force(sv,len); | |
2974 | if (len >= (STRLEN)PL_origalen-1) { | |
2975 | /* Longer than original, will be truncated. We assume that | |
2976 | * PL_origalen bytes are available. */ | |
2977 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
2978 | } | |
2979 | else { | |
2980 | /* Shorter than original, will be padded. */ | |
235ac35d | 2981 | #ifdef PERL_DARWIN |
60777a0d JH |
2982 | /* Special case for Mac OS X: see [perl #38868] */ |
2983 | const int pad = 0; | |
235ac35d | 2984 | #else |
8a89a4f1 MB |
2985 | /* Is the space counterintuitive? Yes. |
2986 | * (You were expecting \0?) | |
2987 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
2988 | * --jhi */ | |
60777a0d | 2989 | const int pad = ' '; |
235ac35d | 2990 | #endif |
60777a0d JH |
2991 | Copy(s, PL_origargv[0], len, char); |
2992 | PL_origargv[0][len] = 0; | |
2993 | memset(PL_origargv[0] + len + 1, | |
2994 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
2995 | } |
2996 | PL_origargv[0][PL_origalen-1] = 0; | |
2997 | for (i = 1; i < PL_origargc; i++) | |
2998 | PL_origargv[i] = 0; | |
7636ea95 AB |
2999 | #ifdef HAS_PRCTL_SET_NAME |
3000 | /* Set the legacy process name in addition to the POSIX name on Linux */ | |
3001 | if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) { | |
3002 | /* diag_listed_as: SKIPME */ | |
3003 | Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno)); | |
3004 | } | |
3005 | #endif | |
79072805 | 3006 | } |
9d3968b2 | 3007 | #endif |
e2975953 | 3008 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 LW |
3009 | break; |
3010 | } | |
3011 | return 0; | |
3012 | } | |
3013 | ||
3014 | I32 | |
84c7b88c BF |
3015 | Perl_whichsig_sv(pTHX_ SV *sigsv) |
3016 | { | |
3017 | const char *sigpv; | |
3018 | STRLEN siglen; | |
3019 | PERL_ARGS_ASSERT_WHICHSIG_SV; | |
3020 | PERL_UNUSED_CONTEXT; | |
3021 | sigpv = SvPV_const(sigsv, siglen); | |
3022 | return whichsig_pvn(sigpv, siglen); | |
3023 | } | |
3024 | ||
3025 | I32 | |
3026 | Perl_whichsig_pv(pTHX_ const char *sig) | |
3027 | { | |
3028 | PERL_ARGS_ASSERT_WHICHSIG_PV; | |
3029 | PERL_UNUSED_CONTEXT; | |
3030 | return whichsig_pvn(sig, strlen(sig)); | |
3031 | } | |
3032 | ||
3033 | I32 | |
3034 | Perl_whichsig_pvn(pTHX_ const char *sig, STRLEN len) | |
79072805 | 3035 | { |
eb578fdb | 3036 | char* const* sigv; |
7918f24d | 3037 | |
84c7b88c | 3038 | PERL_ARGS_ASSERT_WHICHSIG_PVN; |
96a5add6 | 3039 | PERL_UNUSED_CONTEXT; |
79072805 | 3040 | |
aadb217d | 3041 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
84c7b88c | 3042 | if (strlen(*sigv) == len && memEQ(sig,*sigv, len)) |
aadb217d | 3043 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 | 3044 | #ifdef SIGCLD |
84c7b88c | 3045 | if (memEQs(sig, len, "CHLD")) |
79072805 LW |
3046 | return SIGCLD; |
3047 | #endif | |
3048 | #ifdef SIGCHLD | |
84c7b88c | 3049 | if (memEQs(sig, len, "CLD")) |
79072805 LW |
3050 | return SIGCHLD; |
3051 | #endif | |
7f1236c0 | 3052 | return -1; |
79072805 LW |
3053 | } |
3054 | ||
ecfc5424 | 3055 | Signal_t |
1e82f5a6 | 3056 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3057 | Perl_sighandler(int sig, siginfo_t *sip, void *uap) |
1e82f5a6 SH |
3058 | #else |
3059 | Perl_sighandler(int sig) | |
3060 | #endif | |
79072805 | 3061 | { |
1018e26f NIS |
3062 | #ifdef PERL_GET_SIG_CONTEXT |
3063 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 3064 | #else |
cea2e8a9 | 3065 | dTHX; |
71d280e3 | 3066 | #endif |
79072805 | 3067 | dSP; |
a0714e2c SS |
3068 | GV *gv = NULL; |
3069 | SV *sv = NULL; | |
8772537c | 3070 | SV * const tSv = PL_Sv; |
601f1833 | 3071 | CV *cv = NULL; |
533c011a | 3072 | OP *myop = PL_op; |
84902520 | 3073 | U32 flags = 0; |
8772537c | 3074 | XPV * const tXpv = PL_Xpv; |
0c4d3b5e | 3075 | I32 old_ss_ix = PL_savestack_ix; |
100c03aa | 3076 | SV *errsv_save = NULL; |
71d280e3 | 3077 | |
84902520 | 3078 | |
727405f8 | 3079 | if (!PL_psig_ptr[sig]) { |
99ef548b | 3080 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
3081 | PL_sig_name[sig]); |
3082 | exit(sig); | |
3083 | } | |
ff0cee69 | 3084 | |
a0d63a7b DM |
3085 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3086 | /* Max number of items pushed there is 3*n or 4. We cannot fix | |
3087 | infinity, so we fix 4 (in fact 5): */ | |
3088 | if (PL_savestack_ix + 15 <= PL_savestack_max) { | |
3089 | flags |= 1; | |
3090 | PL_savestack_ix += 5; /* Protect save in progress. */ | |
3091 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, NULL); | |
3092 | } | |
84902520 | 3093 | } |
84902520 | 3094 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ea726b52 | 3095 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig]))) |
8772537c AL |
3096 | || SvTYPE(cv) != SVt_PVCV) { |
3097 | HV *st; | |
f2c0649b | 3098 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 3099 | } |
84902520 | 3100 | |
a0d0e21e | 3101 | if (!cv || !CvROOT(cv)) { |
a2a5de95 NC |
3102 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
3103 | PL_sig_name[sig], (gv ? GvENAME(gv) | |
3104 | : ((cv && CvGV(cv)) | |
3105 | ? GvENAME(CvGV(cv)) | |
3106 | : "__ANON__"))); | |
00d579c5 | 3107 | goto cleanup; |
79072805 LW |
3108 | } |
3109 | ||
0c4d3b5e DM |
3110 | sv = PL_psig_name[sig] |
3111 | ? SvREFCNT_inc_NN(PL_psig_name[sig]) | |
3112 | : newSVpv(PL_sig_name[sig],0); | |
72048cfe | 3113 | flags |= 8; |
0c4d3b5e DM |
3114 | SAVEFREESV(sv); |
3115 | ||
a0d63a7b DM |
3116 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3117 | /* make sure our assumption about the size of the SAVEs are correct: | |
3118 | * 3 for SAVEDESTRUCTOR_X, 2 for SAVEFREESV */ | |
3119 | assert(old_ss_ix + 2 + ((flags & 1) ? 3+5 : 0) == PL_savestack_ix); | |
3120 | } | |
e336de0d | 3121 | |
e788e7d3 | 3122 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 3123 | PUSHMARK(SP); |
79072805 | 3124 | PUSHs(sv); |
8aad04aa JH |
3125 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
3126 | { | |
3127 | struct sigaction oact; | |
3128 | ||
3129 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
3130 | if (sip) { |
3131 | HV *sih = newHV(); | |
ad64d0ec | 3132 | SV *rv = newRV_noinc(MUTABLE_SV(sih)); |
8aad04aa JH |
3133 | /* The siginfo fields signo, code, errno, pid, uid, |
3134 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
3135 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
3136 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 3137 | #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 |
3138 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
3139 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
3140 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
3141 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
3142 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
3143 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 3144 | #endif |
8aad04aa | 3145 | EXTEND(SP, 2); |
ad64d0ec | 3146 | PUSHs(rv); |
22f1178f | 3147 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 3148 | } |
b4552a27 | 3149 | |
8aad04aa JH |
3150 | } |
3151 | } | |
3152 | #endif | |
79072805 | 3153 | PUTBACK; |
a0d0e21e | 3154 | |
100c03aa JL |
3155 | errsv_save = newSVsv(ERRSV); |
3156 | ||
ad64d0ec | 3157 | call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL); |
79072805 | 3158 | |
d3acc0f7 | 3159 | POPSTACK; |
eed484f9 DD |
3160 | { |
3161 | SV * const errsv = ERRSV; | |
3162 | if (SvTRUE_NN(errsv)) { | |
3163 | SvREFCNT_dec(errsv_save); | |
c22d665b | 3164 | #ifndef PERL_MICRO |
1b266415 NIS |
3165 | /* Handler "died", for example to get out of a restart-able read(). |
3166 | * Before we re-do that on its behalf re-enable the signal which was | |
3167 | * blocked by the system when we entered. | |
3168 | */ | |
c22d665b | 3169 | #ifdef HAS_SIGPROCMASK |
d488af49 | 3170 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
eed484f9 | 3171 | if (sip || uap) |
c22d665b | 3172 | #endif |
eed484f9 DD |
3173 | { |
3174 | sigset_t set; | |
3175 | sigemptyset(&set); | |
3176 | sigaddset(&set,sig); | |
3177 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
3178 | } | |
c22d665b | 3179 | #else |
eed484f9 DD |
3180 | /* Not clear if this will work */ |
3181 | (void)rsignal(sig, SIG_IGN); | |
3182 | (void)rsignal(sig, PL_csighandlerp); | |
c22d665b LT |
3183 | #endif |
3184 | #endif /* !PERL_MICRO */ | |
eed484f9 DD |
3185 | die_sv(errsv); |
3186 | } | |
3187 | else { | |
3188 | sv_setsv(errsv, errsv_save); | |
3189 | SvREFCNT_dec(errsv_save); | |
3190 | } | |
100c03aa JL |
3191 | } |
3192 | ||
00d579c5 | 3193 | cleanup: |
0c4d3b5e DM |
3194 | /* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */ |
3195 | PL_savestack_ix = old_ss_ix; | |
72048cfe | 3196 | if (flags & 8) |
2357bae7 | 3197 | SvREFCNT_dec_NN(sv); |
533c011a | 3198 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 3199 | |
3280af22 NIS |
3200 | PL_Sv = tSv; /* Restore global temporaries. */ |
3201 | PL_Xpv = tXpv; | |
53bb94e2 | 3202 | return; |
79072805 | 3203 | } |
4e35701f NIS |
3204 | |
3205 | ||
51371543 | 3206 | static void |
8772537c | 3207 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3208 | { |
97aff369 | 3209 | dVAR; |
8772537c AL |
3210 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3211 | SV* const sv = mgs->mgs_sv; | |
150b625d | 3212 | bool bumped; |
51371543 GS |
3213 | |
3214 | if (!sv) | |
3215 | return; | |
3216 | ||
4bac9ae4 CS |
3217 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
3218 | SvTEMP_off(sv); /* if it's still magical, this value isn't temporary */ | |
f8c7b90f | 3219 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3220 | /* While magic was saved (and off) sv_setsv may well have seen |
3221 | this SV as a prime candidate for COW. */ | |
3222 | if (SvIsCOW(sv)) | |
e424a81e | 3223 | sv_force_normal_flags(sv, 0); |
f9701176 | 3224 | #endif |
f9c6fee5 CS |
3225 | if (mgs->mgs_readonly) |
3226 | SvREADONLY_on(sv); | |
3227 | if (mgs->mgs_magical) | |
3228 | SvFLAGS(sv) |= mgs->mgs_magical; | |
51371543 GS |
3229 | else |
3230 | mg_magical(sv); | |
51371543 GS |
3231 | } |
3232 | ||
150b625d | 3233 | bumped = mgs->mgs_bumped; |
51371543 GS |
3234 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
3235 | ||
3236 | /* If we're still on top of the stack, pop us off. (That condition | |
3237 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3238 | * if it's being called via leave_scope.) | |
3239 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3240 | * may leave alloc gunk on the savestack, and some code | |
3241 | * (e.g. sighandler) doesn't expect that... | |
3242 | */ | |
3243 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3244 | { | |
1be36ce0 NC |
3245 | UV popval = SSPOPUV; |
3246 | assert(popval == SAVEt_DESTRUCTOR_X); | |
51371543 | 3247 | PL_savestack_ix -= 2; |
1be36ce0 NC |
3248 | popval = SSPOPUV; |
3249 | assert((popval & SAVE_MASK) == SAVEt_ALLOC); | |
3250 | PL_savestack_ix -= popval >> SAVE_TIGHT_SHIFT; | |
51371543 | 3251 | } |
150b625d DM |
3252 | if (bumped) { |
3253 | if (SvREFCNT(sv) == 1) { | |
3254 | /* We hold the last reference to this SV, which implies that the | |
3255 | SV was deleted as a side effect of the routines we called. | |
3256 | So artificially keep it alive a bit longer. | |
3257 | We avoid turning on the TEMP flag, which can cause the SV's | |
3258 | buffer to get stolen (and maybe other stuff). */ | |
150b625d | 3259 | sv_2mortal(sv); |
4bac9ae4 | 3260 | SvTEMP_off(sv); |
8985fe98 | 3261 | } |
150b625d | 3262 | else |
2357bae7 | 3263 | SvREFCNT_dec_NN(sv); /* undo the inc in S_save_magic() */ |
8985fe98 | 3264 | } |
51371543 GS |
3265 | } |
3266 | ||
0c4d3b5e DM |
3267 | /* clean up the mess created by Perl_sighandler(). |
3268 | * Note that this is only called during an exit in a signal handler; | |
3269 | * a die is trapped by the call_sv() and the SAVEDESTRUCTOR_X manually | |
9a7f166c | 3270 | * skipped over. */ |
0c4d3b5e | 3271 | |
51371543 | 3272 | static void |
8772537c | 3273 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3274 | { |
27da23d5 | 3275 | dVAR; |
0c4d3b5e | 3276 | PERL_UNUSED_ARG(p); |
7918f24d | 3277 | |
0c4d3b5e | 3278 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
51371543 | 3279 | } |
1018e26f | 3280 | |
66610fdd | 3281 | /* |
b3ca2e83 NC |
3282 | =for apidoc magic_sethint |
3283 | ||
3284 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3285 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3286 | anything that would need a deep copy. Maybe we should warn if we find a | |
3287 | reference. | |
b3ca2e83 NC |
3288 | |
3289 | =cut | |
3290 | */ | |
3291 | int | |
3292 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3293 | { | |
3294 | dVAR; | |
ad64d0ec | 3295 | SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr) |
59cd0e26 | 3296 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3297 | |
7918f24d NC |
3298 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3299 | ||
e6e3e454 NC |
3300 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3301 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3302 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3303 | or take other more complex action. */ | |
3304 | ||
5b9c0671 NC |
3305 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3306 | Doing this here saves a lot of doing it manually in perl code (and | |
3307 | forgetting to do it, and consequent subtle errors. */ | |
3308 | PL_hints |= HINT_LOCALIZE_HH; | |
20439bc7 Z |
3309 | CopHINTHASH_set(&PL_compiling, |
3310 | cophh_store_sv(CopHINTHASH_get(&PL_compiling), key, 0, sv, 0)); | |
b3ca2e83 NC |
3311 | return 0; |
3312 | } | |
3313 | ||
3314 | /* | |
f175cff5 | 3315 | =for apidoc magic_clearhint |
b3ca2e83 | 3316 | |
c28fe1ec NC |
3317 | Triggered by a delete from %^H, records the key to |
3318 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3319 | |
3320 | =cut | |
3321 | */ | |
3322 | int | |
3323 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3324 | { | |
3325 | dVAR; | |
7918f24d NC |
3326 | |
3327 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; | |
f5a63d97 AL |
3328 | PERL_UNUSED_ARG(sv); |
3329 | ||
5b9c0671 | 3330 | PL_hints |= HINT_LOCALIZE_HH; |
20439bc7 | 3331 | CopHINTHASH_set(&PL_compiling, |
e3352591 FC |
3332 | mg->mg_len == HEf_SVKEY |
3333 | ? cophh_delete_sv(CopHINTHASH_get(&PL_compiling), | |
3334 | MUTABLE_SV(mg->mg_ptr), 0, 0) | |
3335 | : cophh_delete_pvn(CopHINTHASH_get(&PL_compiling), | |
3336 | mg->mg_ptr, mg->mg_len, 0, 0)); | |
b3ca2e83 NC |
3337 | return 0; |
3338 | } | |
3339 | ||
3340 | /* | |
f747ebd6 Z |
3341 | =for apidoc magic_clearhints |
3342 | ||
3343 | Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>. | |
3344 | ||
3345 | =cut | |
3346 | */ | |
3347 | int | |
3348 | Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg) | |
3349 | { | |
3350 | PERL_ARGS_ASSERT_MAGIC_CLEARHINTS; | |
3351 | PERL_UNUSED_ARG(sv); | |
3352 | PERL_UNUSED_ARG(mg); | |
20439bc7 Z |
3353 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
3354 | CopHINTHASH_set(&PL_compiling, cophh_new_empty()); | |
f747ebd6 Z |
3355 | return 0; |
3356 | } | |
3357 | ||
09fb282d FC |
3358 | int |
3359 | Perl_magic_copycallchecker(pTHX_ SV *sv, MAGIC *mg, SV *nsv, | |
3360 | const char *name, I32 namlen) | |
3361 | { | |
3362 | MAGIC *nmg; | |
3363 | ||
3364 | PERL_ARGS_ASSERT_MAGIC_COPYCALLCHECKER; | |
4f8dbb2d | 3365 | PERL_UNUSED_ARG(sv); |
09fb282d FC |
3366 | PERL_UNUSED_ARG(name); |
3367 | PERL_UNUSED_ARG(namlen); | |
3368 | ||
3369 | sv_magic(nsv, &PL_sv_undef, mg->mg_type, NULL, 0); | |
3370 | nmg = mg_find(nsv, mg->mg_type); | |
3371 | if (nmg->mg_flags & MGf_REFCOUNTED) SvREFCNT_dec(nmg->mg_obj); | |
3372 | nmg->mg_ptr = mg->mg_ptr; | |
3373 | nmg->mg_obj = SvREFCNT_inc_simple(mg->mg_obj); | |
3374 | nmg->mg_flags |= MGf_REFCOUNTED; | |
3375 | return 1; | |
3376 | } | |
3377 | ||
f747ebd6 | 3378 | /* |
66610fdd RGS |
3379 | * Local variables: |
3380 | * c-indentation-style: bsd | |
3381 | * c-basic-offset: 4 | |
14d04a33 | 3382 | * indent-tabs-mode: nil |
66610fdd RGS |
3383 | * End: |
3384 | * | |
14d04a33 | 3385 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3386 | */ |