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); |
3805b5fb | 119 | mgs->mgs_readonly = SvREADONLY(sv); |
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 KW |
663 | const I32 paren = mg->mg_len; |
664 | I32 s; | |
665 | I32 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 | { |
eb578fdb | 672 | I32 i; |
0bd48802 AL |
673 | if (mg->mg_obj) /* @+ */ |
674 | i = t; | |
675 | else /* @- */ | |
676 | i = s; | |
677 | ||
678 | if (i > 0 && 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 | |
0bd48802 | 686 | sv_setiv(sv, i); |
1aa99e6b | 687 | } |
0bd48802 | 688 | } |
6cef1e77 IZ |
689 | } |
690 | return 0; | |
691 | } | |
692 | ||
6502e081 DM |
693 | /* @-, @+ */ |
694 | ||
e4b89193 | 695 | int |
a29d06ed MG |
696 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
697 | { | |
7918f24d | 698 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET; |
d4c19fe8 AL |
699 | PERL_UNUSED_ARG(sv); |
700 | PERL_UNUSED_ARG(mg); | |
cb077ed2 | 701 | Perl_croak_no_modify(); |
0dbb1585 | 702 | NORETURN_FUNCTION_END; |
a29d06ed MG |
703 | } |
704 | ||
ad3296c6 | 705 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
706 | if (SvPOK(sv)) { \ |
707 | STRLEN len = SvCUR(sv); \ | |
708 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
709 | while (len > 0 && isSPACE(p[len-1])) \ |
710 | --len; \ | |
711 | SvCUR_set(sv, len); \ | |
712 | p[len] = '\0'; \ | |
713 | } \ | |
ad3296c6 SH |
714 | } STMT_END |
715 | ||
8b850bd5 NC |
716 | void |
717 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
718 | { | |
7918f24d NC |
719 | PERL_ARGS_ASSERT_EMULATE_COP_IO; |
720 | ||
8b850bd5 NC |
721 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) |
722 | sv_setsv(sv, &PL_sv_undef); | |
723 | else { | |
724 | sv_setpvs(sv, ""); | |
725 | SvUTF8_off(sv); | |
726 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
20439bc7 | 727 | SV *const value = cop_hints_fetch_pvs(c, "open<", 0); |
8b850bd5 NC |
728 | assert(value); |
729 | sv_catsv(sv, value); | |
730 | } | |
731 | sv_catpvs(sv, "\0"); | |
732 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
20439bc7 | 733 | SV *const value = cop_hints_fetch_pvs(c, "open>", 0); |
8b850bd5 NC |
734 | assert(value); |
735 | sv_catsv(sv, value); | |
736 | } | |
737 | } | |
738 | } | |
739 | ||
25bbd826 CB |
740 | #ifdef VMS |
741 | #include <descrip.h> | |
742 | #include <starlet.h> | |
743 | #endif | |
744 | ||
79072805 | 745 | int |
864dbfa3 | 746 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 747 | { |
27da23d5 | 748 | dVAR; |
eb578fdb KW |
749 | I32 paren; |
750 | const char *s = NULL; | |
751 | REGEXP *rx; | |
823a54a3 AL |
752 | const char * const remaining = mg->mg_ptr + 1; |
753 | const char nextchar = *remaining; | |
79072805 | 754 | |
7918f24d NC |
755 | PERL_ARGS_ASSERT_MAGIC_GET; |
756 | ||
79072805 | 757 | switch (*mg->mg_ptr) { |
748a9306 | 758 | case '\001': /* ^A */ |
f2da823f FC |
759 | if (SvOK(PL_bodytarget)) sv_copypv(sv, PL_bodytarget); |
760 | else sv_setsv(sv, &PL_sv_undef); | |
125b9982 NT |
761 | if (SvTAINTED(PL_bodytarget)) |
762 | SvTAINTED_on(sv); | |
748a9306 | 763 | break; |
e5218da5 | 764 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 765 | if (nextchar == '\0') { |
e5218da5 GA |
766 | sv_setiv(sv, (IV)PL_minus_c); |
767 | } | |
823a54a3 | 768 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
769 | sv_setiv(sv, (IV)STATUS_NATIVE); |
770 | } | |
49460fe6 NIS |
771 | break; |
772 | ||
79072805 | 773 | case '\004': /* ^D */ |
aea4f609 | 774 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 775 | break; |
28f23441 | 776 | case '\005': /* ^E */ |
823a54a3 | 777 | if (nextchar == '\0') { |
e37778c2 | 778 | #if defined(VMS) |
0a378802 | 779 | { |
0a378802 JH |
780 | char msg[255]; |
781 | $DESCRIPTOR(msgdsc,msg); | |
782 | sv_setnv(sv,(NV) vaxc$errno); | |
783 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
784 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
785 | else | |
76f68e9b | 786 | sv_setpvs(sv,""); |
0a378802 | 787 | } |
4b645107 | 788 | #elif defined(OS2) |
0a378802 JH |
789 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
790 | sv_setnv(sv, (NV)errno); | |
791 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
792 | } else { | |
793 | if (errno != errno_isOS2) { | |
823a54a3 | 794 | const int tmp = _syserrno(); |
0a378802 JH |
795 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
796 | Perl_rc = tmp; | |
797 | } | |
798 | sv_setnv(sv, (NV)Perl_rc); | |
799 | sv_setpv(sv, os2error(Perl_rc)); | |
800 | } | |
4b645107 | 801 | #elif defined(WIN32) |
0a378802 | 802 | { |
d4c19fe8 | 803 | const DWORD dwErr = GetLastError(); |
0a378802 | 804 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 805 | if (dwErr) { |
0a378802 JH |
806 | PerlProc_GetOSError(sv, dwErr); |
807 | } | |
808 | else | |
76f68e9b | 809 | sv_setpvs(sv, ""); |
0a378802 JH |
810 | SetLastError(dwErr); |
811 | } | |
22fae026 | 812 | #else |
f6c8f21d | 813 | { |
4ee39169 | 814 | dSAVE_ERRNO; |
f6c8f21d | 815 | sv_setnv(sv, (NV)errno); |
666ea192 | 816 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
4ee39169 | 817 | RESTORE_ERRNO; |
f6c8f21d | 818 | } |
28f23441 | 819 | #endif |
ad3296c6 | 820 | SvRTRIM(sv); |
0a378802 JH |
821 | SvNOK_on(sv); /* what a wonderful hack! */ |
822 | } | |
823a54a3 | 823 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
824 | sv_setsv(sv, PL_encoding); |
825 | break; | |
79072805 | 826 | case '\006': /* ^F */ |
3280af22 | 827 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 828 | break; |
9ebf26ad FR |
829 | case '\007': /* ^GLOBAL_PHASE */ |
830 | if (strEQ(remaining, "LOBAL_PHASE")) { | |
831 | sv_setpvn(sv, PL_phase_names[PL_phase], | |
832 | strlen(PL_phase_names[PL_phase])); | |
833 | } | |
834 | break; | |
a0d0e21e | 835 | case '\010': /* ^H */ |
3280af22 | 836 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 837 | break; |
9d116dd7 | 838 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 839 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 840 | break; |
8561ea1d FC |
841 | case '\014': /* ^LAST_FH */ |
842 | if (strEQ(remaining, "AST_FH")) { | |
843 | if (PL_last_in_gv) { | |
844 | assert(isGV_with_GP(PL_last_in_gv)); | |
845 | SV_CHECK_THINKFIRST_COW_DROP(sv); | |
846 | prepare_SV_for_RV(sv); | |
847 | SvOK_off(sv); | |
848 | SvRV_set(sv, SvREFCNT_inc_simple_NN(PL_last_in_gv)); | |
849 | SvROK_on(sv); | |
850 | sv_rvweaken(sv); | |
851 | } | |
852 | else sv_setsv_nomg(sv, NULL); | |
853 | } | |
854 | break; | |
ac27b0f5 | 855 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 856 | if (nextchar == '\0') { |
ac27b0f5 | 857 | sv_setpv(sv, PL_osname); |
3511154c DM |
858 | SvTAINTED_off(sv); |
859 | } | |
823a54a3 | 860 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 861 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 862 | } |
28f23441 | 863 | break; |
9ebf26ad | 864 | case '\020': |
cde0cee5 YO |
865 | if (nextchar == '\0') { /* ^P */ |
866 | sv_setiv(sv, (IV)PL_perldb); | |
867 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2c7b5d76 DM |
868 | |
869 | paren = RX_BUFF_IDX_CARET_PREMATCH; | |
870 | goto do_numbuf_fetch; | |
cde0cee5 | 871 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ |
2c7b5d76 DM |
872 | paren = RX_BUFF_IDX_CARET_POSTMATCH; |
873 | goto do_numbuf_fetch; | |
cde0cee5 | 874 | } |
79072805 | 875 | break; |
fb73857a | 876 | case '\023': /* ^S */ |
823a54a3 | 877 | if (nextchar == '\0') { |
bc177e6b | 878 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 879 | SvOK_off(sv); |
3280af22 | 880 | else if (PL_in_eval) |
6dc8a9e4 | 881 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
882 | else |
883 | sv_setiv(sv, 0); | |
d58bf5aa | 884 | } |
fb73857a | 885 | break; |
79072805 | 886 | case '\024': /* ^T */ |
823a54a3 | 887 | if (nextchar == '\0') { |
88e89b8a | 888 | #ifdef BIG_TIME |
7c36658b | 889 | sv_setnv(sv, PL_basetime); |
88e89b8a | 890 | #else |
7c36658b | 891 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 892 | #endif |
7c36658b | 893 | } |
823a54a3 | 894 | else if (strEQ(remaining, "AINT")) |
284167a5 S |
895 | sv_setiv(sv, TAINTING_get |
896 | ? (TAINT_WARN_get || PL_unsafe ? -1 : 1) | |
9aa05f58 | 897 | : 0); |
7c36658b | 898 | break; |
e07ea26a | 899 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 900 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 901 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 902 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 903 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
904 | else if (strEQ(remaining, "TF8CACHE")) |
905 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
906 | break; |
907 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 908 | if (nextchar == '\0') |
4438c4b7 | 909 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 910 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 911 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 912 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
913 | } |
914 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
7e4f0450 FC |
915 | sv_setsv(sv, &PL_sv_undef); |
916 | break; | |
013b78e8 | 917 | } |
d3a7d8c7 | 918 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
919 | /* Get the bit mask for $warnings::Bits{all}, because |
920 | * it could have been extended by warnings::register */ | |
4bac9ae4 CS |
921 | HV * const bits = get_hv("warnings::Bits", 0); |
922 | SV ** const bits_all = bits ? hv_fetchs(bits, "all", FALSE) : NULL; | |
923 | if (bits_all) | |
924 | sv_copypv(sv, *bits_all); | |
925 | else | |
926 | sv_setpvn(sv, WARN_ALLstring, WARNsize); | |
ac27b0f5 | 927 | } |
4438c4b7 | 928 | else { |
72dc9ed5 NC |
929 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
930 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 931 | } |
4438c4b7 | 932 | } |
79072805 | 933 | break; |
cde0cee5 YO |
934 | case '\015': /* $^MATCH */ |
935 | if (strEQ(remaining, "ATCH")) { | |
2c7b5d76 DM |
936 | paren = RX_BUFF_IDX_CARET_FULLMATCH; |
937 | goto do_numbuf_fetch; | |
938 | } | |
939 | ||
79072805 LW |
940 | case '1': case '2': case '3': case '4': |
941 | case '5': case '6': case '7': case '8': case '9': case '&': | |
2c7b5d76 DM |
942 | /* |
943 | * Pre-threads, this was paren = atoi(GvENAME((const GV *)mg->mg_obj)); | |
944 | * XXX Does the new way break anything? | |
945 | */ | |
946 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
947 | do_numbuf_fetch: | |
948 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
949 | CALLREG_NUMBUF_FETCH(rx,paren,sv); | |
950 | break; | |
951 | } | |
952 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
953 | break; |
954 | case '+': | |
aaa362c4 | 955 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2c7b5d76 DM |
956 | paren = RX_LASTPAREN(rx); |
957 | if (paren) | |
958 | goto do_numbuf_fetch; | |
79072805 | 959 | } |
3280af22 | 960 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 961 | break; |
a01268b5 JH |
962 | case '\016': /* ^N */ |
963 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
2c7b5d76 DM |
964 | paren = RX_LASTCLOSEPAREN(rx); |
965 | if (paren) | |
966 | goto do_numbuf_fetch; | |
a01268b5 JH |
967 | } |
968 | sv_setsv(sv,&PL_sv_undef); | |
969 | break; | |
79072805 | 970 | case '`': |
2c7b5d76 DM |
971 | paren = RX_BUFF_IDX_PREMATCH; |
972 | goto do_numbuf_fetch; | |
79072805 | 973 | case '\'': |
2c7b5d76 DM |
974 | paren = RX_BUFF_IDX_POSTMATCH; |
975 | goto do_numbuf_fetch; | |
79072805 | 976 | case '.': |
3280af22 | 977 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 978 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 979 | } |
79072805 LW |
980 | break; |
981 | case '?': | |
809a5acc | 982 | { |
809a5acc | 983 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 984 | #ifdef COMPLEX_STATUS |
41cb7b2b | 985 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
986 | LvTARGOFF(sv) = PL_statusvalue; |
987 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 988 | #endif |
809a5acc | 989 | } |
79072805 LW |
990 | break; |
991 | case '^': | |
acbe1b9d | 992 | if (GvIOp(PL_defoutgv)) |
099be4f1 | 993 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
994 | if (s) |
995 | sv_setpv(sv,s); | |
996 | else { | |
3280af22 | 997 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 998 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
999 | } |
1000 | break; | |
1001 | case '~': | |
acbe1b9d | 1002 | if (GvIOp(PL_defoutgv)) |
0daa599b | 1003 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 1004 | if (!s) |
3280af22 | 1005 | s = GvENAME(PL_defoutgv); |
79072805 LW |
1006 | sv_setpv(sv,s); |
1007 | break; | |
79072805 | 1008 | case '=': |
099be4f1 | 1009 | if (GvIO(PL_defoutgv)) |
0daa599b | 1010 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
1011 | break; |
1012 | case '-': | |
099be4f1 | 1013 | if (GvIO(PL_defoutgv)) |
0daa599b | 1014 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
1015 | break; |
1016 | case '%': | |
099be4f1 | 1017 | if (GvIO(PL_defoutgv)) |
0daa599b | 1018 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 | 1019 | break; |
79072805 LW |
1020 | case ':': |
1021 | break; | |
1022 | case '/': | |
1023 | break; | |
1024 | case '[': | |
e1dccc0d | 1025 | sv_setiv(sv, 0); |
79072805 LW |
1026 | break; |
1027 | case '|': | |
099be4f1 | 1028 | if (GvIO(PL_defoutgv)) |
0daa599b | 1029 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 | 1030 | break; |
79072805 | 1031 | case '\\': |
b2ce0fda | 1032 | if (PL_ors_sv) |
f28098ff | 1033 | sv_copypv(sv, PL_ors_sv); |
4bac9ae4 CS |
1034 | else |
1035 | sv_setsv(sv, &PL_sv_undef); | |
79072805 | 1036 | break; |
0e219455 | 1037 | case '$': /* $$ */ |
9cdac2a2 FC |
1038 | { |
1039 | IV const pid = (IV)PerlProc_getpid(); | |
19db9fb7 | 1040 | if (isGV(mg->mg_obj) || SvIV(mg->mg_obj) != pid) { |
9cdac2a2 FC |
1041 | /* never set manually, or at least not since last fork */ |
1042 | sv_setiv(sv, pid); | |
19db9fb7 Z |
1043 | /* never unsafe, even if reading in a tainted expression */ |
1044 | SvTAINTED_off(sv); | |
1045 | } | |
9cdac2a2 FC |
1046 | /* else a value has been assigned manually, so do nothing */ |
1047 | } | |
0e219455 MM |
1048 | break; |
1049 | ||
79072805 | 1050 | case '!': |
666d8aa2 CB |
1051 | { |
1052 | dSAVE_ERRNO; | |
a5f75d66 | 1053 | #ifdef VMS |
65202027 | 1054 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
a5f75d66 | 1055 | #else |
65202027 | 1056 | sv_setnv(sv, (NV)errno); |
666d8aa2 | 1057 | #endif |
88e89b8a | 1058 | #ifdef OS2 |
ed344e4f IZ |
1059 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
1060 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 1061 | else |
a5f75d66 | 1062 | #endif |
1500bd91 KW |
1063 | if (! errno) { |
1064 | sv_setpvs(sv, ""); | |
1065 | } | |
1066 | else { | |
1067 | ||
1068 | /* Strerror can return NULL on some platforms, which will result in | |
1069 | * 'sv' not being considered SvOK. The SvNOK_on() below will cause | |
1070 | * just the number part to be valid */ | |
1071 | sv_setpv(sv, Strerror(errno)); | |
1072 | ||
1073 | /* In some locales the error string may come back as UTF-8, in | |
1074 | * which case we should turn on that flag. This didn't use to | |
1075 | * happen, and to avoid any possible backward compatibility issues, | |
1076 | * we don't turn on the flag unless we have to. So the flag stays | |
1077 | * off for an entirely ASCII string. We assume that if the string | |
1078 | * looks like UTF-8, it really is UTF-8: "text in any other | |
1079 | * encoding that uses bytes with the high bit set is extremely | |
1080 | * unlikely to pass a UTF-8 validity test" | |
1081 | * (http://en.wikipedia.org/wiki/Charset_detection). There is a | |
1082 | * potential that we will get it wrong however, especially on short | |
1083 | * error message text. (If it turns out to be necessary, we could | |
1084 | * also keep track if the current LC_MESSAGES locale is UTF-8) */ | |
1085 | if (SvOK(sv) /* It could be that Strerror returned invalid */ | |
1086 | && ! is_ascii_string((U8*) SvPVX_const(sv), SvCUR(sv)) | |
1087 | && is_utf8_string((U8*) SvPVX_const(sv), SvCUR(sv))) | |
1088 | { | |
1089 | SvUTF8_on(sv); | |
1090 | } | |
1091 | } | |
4ee39169 | 1092 | RESTORE_ERRNO; |
88e89b8a | 1093 | } |
666d8aa2 | 1094 | |
ad3296c6 | 1095 | SvRTRIM(sv); |
946ec16e | 1096 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1097 | break; |
1098 | case '<': | |
dfff4baf | 1099 | sv_setuid(sv, PerlProc_getuid()); |
79072805 LW |
1100 | break; |
1101 | case '>': | |
dfff4baf | 1102 | sv_setuid(sv, PerlProc_geteuid()); |
79072805 LW |
1103 | break; |
1104 | case '(': | |
dfff4baf | 1105 | sv_setgid(sv, PerlProc_getgid()); |
79072805 LW |
1106 | goto add_groups; |
1107 | case ')': | |
dfff4baf | 1108 | sv_setgid(sv, PerlProc_getegid()); |
79072805 | 1109 | add_groups: |
79072805 | 1110 | #ifdef HAS_GETGROUPS |
79072805 | 1111 | { |
57d7c65e | 1112 | Groups_t *gary = NULL; |
fb45abb2 | 1113 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1114 | Newx(gary, num_groups, Groups_t); |
1115 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1116 | for (i = 0; i < num_groups; i++) |
1117 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1118 | Safefree(gary); |
79072805 | 1119 | } |
155aba94 | 1120 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1121 | #endif |
79072805 | 1122 | break; |
79072805 LW |
1123 | case '0': |
1124 | break; | |
1125 | } | |
a0d0e21e | 1126 | return 0; |
79072805 LW |
1127 | } |
1128 | ||
1129 | int | |
864dbfa3 | 1130 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1131 | { |
8772537c | 1132 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1133 | |
7918f24d NC |
1134 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1135 | ||
79072805 | 1136 | if (uf && uf->uf_val) |
24f81a43 | 1137 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1138 | return 0; |
1139 | } | |
1140 | ||
1141 | int | |
864dbfa3 | 1142 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1143 | { |
27da23d5 | 1144 | dVAR; |
9ae3433d | 1145 | STRLEN len = 0, klen; |
12033064 | 1146 | const char * const key = MgPV_const(mg,klen); |
888a67f6 | 1147 | const char *s = ""; |
1e422769 | 1148 | |
7918f24d NC |
1149 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1150 | ||
613c63b4 | 1151 | SvGETMAGIC(sv); |
12033064 | 1152 | if (SvOK(sv)) { |
613c63b4 CS |
1153 | /* defined environment variables are byte strings; unfortunately |
1154 | there is no SvPVbyte_force_nomg(), so we must do this piecewise */ | |
1155 | (void)SvPV_force_nomg_nolen(sv); | |
1156 | sv_utf8_downgrade(sv, /* fail_ok */ TRUE); | |
1157 | if (SvUTF8(sv)) { | |
1158 | Perl_ck_warner_d(aTHX_ packWARN(WARN_UTF8), "Wide character in %s", "setenv"); | |
1159 | SvUTF8_off(sv); | |
1160 | } | |
1161 | s = SvPVX(sv); | |
1162 | len = SvCUR(sv); | |
12033064 CS |
1163 | } |
1164 | my_setenv(key, s); /* does the deed */ | |
1165 | ||
a0d0e21e LW |
1166 | #ifdef DYNAMIC_ENV_FETCH |
1167 | /* We just undefd an environment var. Is a replacement */ | |
1168 | /* waiting in the wings? */ | |
1169 | if (!len) { | |
6bd66ee9 | 1170 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), key, klen, FALSE); |
fabdb6c0 | 1171 | if (valp) |
4ab59fcc | 1172 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1173 | } |
1174 | #endif | |
1e422769 | 1175 | |
39e571d4 | 1176 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1177 | /* And you'll never guess what the dog had */ |
1178 | /* in its mouth... */ | |
284167a5 | 1179 | if (TAINTING_get) { |
1e422769 | 1180 | MgTAINTEDDIR_off(mg); |
1181 | #ifdef VMS | |
6bd66ee9 | 1182 | if (s && klen == 8 && strEQ(key, "DCL$PATH")) { |
b8ffc8df | 1183 | char pathbuf[256], eltbuf[256], *cp, *elt; |
1e422769 | 1184 | int i = 0, j = 0; |
1185 | ||
6fca0082 | 1186 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1187 | elt = eltbuf; |
1e422769 | 1188 | do { /* DCL$PATH may be a search list */ |
1189 | while (1) { /* as may dev portion of any element */ | |
1190 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1191 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1192 | cando_by_name(S_IWUSR,0,elt) ) { | |
1193 | MgTAINTEDDIR_on(mg); | |
1194 | return 0; | |
1195 | } | |
1196 | } | |
bd61b366 | 1197 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1198 | *cp = '\0'; |
1199 | if (my_trnlnm(elt, eltbuf, j++)) | |
1200 | elt = eltbuf; | |
1201 | else | |
1202 | break; | |
1203 | } | |
1204 | j = 0; | |
1205 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1206 | } | |
1207 | #endif /* VMS */ | |
12033064 | 1208 | if (s && klen == 4 && strEQ(key,"PATH")) { |
8772537c | 1209 | const char * const strend = s + len; |
463ee0b2 LW |
1210 | |
1211 | while (s < strend) { | |
96827780 | 1212 | char tmpbuf[256]; |
c623ac67 | 1213 | Stat_t st; |
5f74f29c | 1214 | I32 i; |
f5a63d97 AL |
1215 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1216 | const char path_sep = '|'; | |
1217 | #else | |
1218 | const char path_sep = ':'; | |
1219 | #endif | |
96827780 | 1220 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1221 | s, strend, path_sep, &i); |
463ee0b2 | 1222 | s++; |
bb7a0f54 | 1223 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1224 | #ifdef VMS |
1225 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1226 | #else | |
1227 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1228 | #endif | |
c6ed36e1 | 1229 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1230 | MgTAINTEDDIR_on(mg); |
1e422769 | 1231 | return 0; |
1232 | } | |
463ee0b2 | 1233 | } |
79072805 LW |
1234 | } |
1235 | } | |
39e571d4 | 1236 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1237 | |
79072805 LW |
1238 | return 0; |
1239 | } | |
1240 | ||
1241 | int | |
864dbfa3 | 1242 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1243 | { |
7918f24d | 1244 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1245 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1246 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1247 | return 0; |
1248 | } | |
1249 | ||
88e89b8a | 1250 | int |
864dbfa3 | 1251 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1252 | { |
97aff369 | 1253 | dVAR; |
7918f24d | 1254 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1255 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1256 | #if defined(VMS) |
cea2e8a9 | 1257 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1258 | #else |
3280af22 | 1259 | if (PL_localizing) { |
fb73857a | 1260 | HE* entry; |
b0269e46 | 1261 | my_clearenv(); |
85fbaab2 NC |
1262 | hv_iterinit(MUTABLE_HV(sv)); |
1263 | while ((entry = hv_iternext(MUTABLE_HV(sv)))) { | |
fb73857a | 1264 | I32 keylen; |
1265 | my_setenv(hv_iterkey(entry, &keylen), | |
85fbaab2 | 1266 | SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry))); |
fb73857a | 1267 | } |
1268 | } | |
1269 | #endif | |
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | int | |
864dbfa3 | 1274 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1275 | { |
27da23d5 | 1276 | dVAR; |
7918f24d | 1277 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1278 | PERL_UNUSED_ARG(sv); |
1279 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1280 | #if defined(VMS) |
1281 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1282 | #else | |
1283 | my_clearenv(); | |
1284 | #endif | |
3e3baf6d | 1285 | return 0; |
66b1d557 HM |
1286 | } |
1287 | ||
64ca3a65 | 1288 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1289 | #ifdef HAS_SIGPROCMASK |
1290 | static void | |
1291 | restore_sigmask(pTHX_ SV *save_sv) | |
1292 | { | |
0bd48802 | 1293 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1294 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1295 | } |
1296 | #endif | |
66b1d557 | 1297 | int |
864dbfa3 | 1298 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1299 | { |
97aff369 | 1300 | dVAR; |
88e89b8a | 1301 | /* Are we fetching a signal entry? */ |
708854f2 | 1302 | int i = (I16)mg->mg_private; |
7918f24d NC |
1303 | |
1304 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1305 | ||
708854f2 | 1306 | if (!i) { |
84c7b88c BF |
1307 | STRLEN siglen; |
1308 | const char * sig = MgPV_const(mg, siglen); | |
1309 | mg->mg_private = i = whichsig_pvn(sig, siglen); | |
708854f2 NC |
1310 | } |
1311 | ||
e02bfb16 | 1312 | if (i > 0) { |
22c35a8c GS |
1313 | if(PL_psig_ptr[i]) |
1314 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1315 | else { |
46da273f | 1316 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1317 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1318 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1319 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1320 | #endif |
1321 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1322 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1323 | sigstate = SIG_DFL; | |
85b332e2 | 1324 | #endif |
88e89b8a | 1325 | /* cache state so we don't fetch it again */ |
8aad04aa | 1326 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1327 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1328 | else |
3280af22 | 1329 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1330 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1331 | SvTEMP_off(sv); |
1332 | } | |
1333 | } | |
1334 | return 0; | |
1335 | } | |
1336 | int | |
864dbfa3 | 1337 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1338 | { |
7918f24d | 1339 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
179c85a2 | 1340 | |
38a124f0 | 1341 | magic_setsig(NULL, mg); |
179c85a2 | 1342 | return sv_unmagic(sv, mg->mg_type); |
88e89b8a | 1343 | } |
3d37d572 | 1344 | |
0a8e0eff | 1345 | Signal_t |
8aad04aa | 1346 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1347 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1348 | #else |
0a8e0eff | 1349 | Perl_csighandler(int sig) |
8aad04aa | 1350 | #endif |
0a8e0eff | 1351 | { |
1018e26f NIS |
1352 | #ifdef PERL_GET_SIG_CONTEXT |
1353 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1354 | #else | |
85b332e2 CL |
1355 | dTHX; |
1356 | #endif | |
23ada85b | 1357 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1358 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1359 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1360 | #endif |
2e34cc90 | 1361 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1362 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1363 | #ifdef KILL_BY_SIGPRC |
1364 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1365 | #else | |
1366 | exit(1); | |
1367 | #endif | |
1368 | #endif | |
406878dd | 1369 | if ( |
853d2c32 RGS |
1370 | #ifdef SIGILL |
1371 | sig == SIGILL || | |
1372 | #endif | |
1373 | #ifdef SIGBUS | |
1374 | sig == SIGBUS || | |
1375 | #endif | |
1376 | #ifdef SIGSEGV | |
1377 | sig == SIGSEGV || | |
1378 | #endif | |
1379 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 | 1380 | /* Call the perl level handler now-- |
31c91b43 | 1381 | * with risk we may be in malloc() or being destructed etc. */ |
6e324d09 | 1382 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1383 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1384 | #else |
1385 | (*PL_sighandlerp)(sig); | |
92807b6d | 1386 | #endif |
406878dd | 1387 | else { |
31c91b43 | 1388 | if (!PL_psig_pend) return; |
406878dd GA |
1389 | /* Set a flag to say this signal is pending, that is awaiting delivery after |
1390 | * the current Perl opcode completes */ | |
1391 | PL_psig_pend[sig]++; | |
1392 | ||
1393 | #ifndef SIG_PENDING_DIE_COUNT | |
1394 | # define SIG_PENDING_DIE_COUNT 120 | |
1395 | #endif | |
fe13d51d | 1396 | /* Add one to say _a_ signal is pending */ |
406878dd GA |
1397 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1398 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1399 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
1400 | } | |
0a8e0eff NIS |
1401 | } |
1402 | ||
2e34cc90 CL |
1403 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1404 | void | |
1405 | Perl_csighandler_init(void) | |
1406 | { | |
1407 | int sig; | |
27da23d5 | 1408 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1409 | |
1410 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1411 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1412 | dTHX; |
27da23d5 | 1413 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1414 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1415 | #endif |
1416 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1417 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1418 | #endif |
1419 | } | |
27da23d5 | 1420 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1421 | } |
1422 | #endif | |
1423 | ||
7fe50b8b LT |
1424 | #if defined HAS_SIGPROCMASK |
1425 | static void | |
1426 | unblock_sigmask(pTHX_ void* newset) | |
1427 | { | |
1428 | sigprocmask(SIG_UNBLOCK, (sigset_t*)newset, NULL); | |
1429 | } | |
1430 | #endif | |
1431 | ||
0a8e0eff NIS |
1432 | void |
1433 | Perl_despatch_signals(pTHX) | |
1434 | { | |
97aff369 | 1435 | dVAR; |
0a8e0eff NIS |
1436 | int sig; |
1437 | PL_sig_pending = 0; | |
1438 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1439 | if (PL_psig_pend[sig]) { | |
d0166017 | 1440 | dSAVE_ERRNO; |
7fe50b8b | 1441 | #ifdef HAS_SIGPROCMASK |
55534442 LT |
1442 | /* From sigaction(2) (FreeBSD man page): |
1443 | * | Signal routines normally execute with the signal that | |
1444 | * | caused their invocation blocked, but other signals may | |
1445 | * | yet occur. | |
1446 | * Emulation of this behavior (from within Perl) is enabled | |
1447 | * using sigprocmask | |
1448 | */ | |
1449 | int was_blocked; | |
1450 | sigset_t newset, oldset; | |
1451 | ||
1452 | sigemptyset(&newset); | |
1453 | sigaddset(&newset, sig); | |
1454 | sigprocmask(SIG_BLOCK, &newset, &oldset); | |
1455 | was_blocked = sigismember(&oldset, sig); | |
7fe50b8b LT |
1456 | if (!was_blocked) { |
1457 | SV* save_sv = newSVpvn((char *)(&newset), sizeof(sigset_t)); | |
1458 | ENTER; | |
1459 | SAVEFREESV(save_sv); | |
1460 | SAVEDESTRUCTOR_X(unblock_sigmask, SvPV_nolen(save_sv)); | |
1461 | } | |
55534442 | 1462 | #endif |
25da4428 | 1463 | PL_psig_pend[sig] = 0; |
6e324d09 | 1464 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1465 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1466 | #else |
1467 | (*PL_sighandlerp)(sig); | |
92807b6d | 1468 | #endif |
7fe50b8b | 1469 | #ifdef HAS_SIGPROCMASK |
55534442 | 1470 | if (!was_blocked) |
7fe50b8b | 1471 | LEAVE; |
55534442 | 1472 | #endif |
d0166017 | 1473 | RESTORE_ERRNO; |
0a8e0eff NIS |
1474 | } |
1475 | } | |
1476 | } | |
1477 | ||
38a124f0 | 1478 | /* sv of NULL signifies that we're acting as magic_clearsig. */ |
85e6fe83 | 1479 | int |
864dbfa3 | 1480 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1481 | { |
27da23d5 | 1482 | dVAR; |
79072805 | 1483 | I32 i; |
cbbf8932 | 1484 | SV** svp = NULL; |
2d4fcd5e AJ |
1485 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1486 | * effects (due to closures). We must make sure that the new disposition | |
1487 | * is in place before it is called. | |
1488 | */ | |
cbbf8932 | 1489 | SV* to_dec = NULL; |
e72dc28c | 1490 | STRLEN len; |
2d4fcd5e AJ |
1491 | #ifdef HAS_SIGPROCMASK |
1492 | sigset_t set, save; | |
1493 | SV* save_sv; | |
1494 | #endif | |
eb578fdb | 1495 | const char *s = MgPV_const(mg,len); |
7918f24d NC |
1496 | |
1497 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1498 | ||
748a9306 | 1499 | if (*s == '_') { |
84c7b88c | 1500 | if (memEQs(s, len, "__DIE__")) |
3280af22 | 1501 | svp = &PL_diehook; |
84c7b88c | 1502 | else if (memEQs(s, len, "__WARN__") |
38a124f0 NC |
1503 | && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) { |
1504 | /* Merge the existing behaviours, which are as follows: | |
1505 | magic_setsig, we always set svp to &PL_warnhook | |
1506 | (hence we always change the warnings handler) | |
1507 | For magic_clearsig, we don't change the warnings handler if it's | |
1508 | set to the &PL_warnhook. */ | |
3280af22 | 1509 | svp = &PL_warnhook; |
84c7b88c BF |
1510 | } else if (sv) { |
1511 | SV *tmp = sv_newmortal(); | |
1512 | Perl_croak(aTHX_ "No such hook: %s", | |
1513 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1514 | } | |
748a9306 | 1515 | i = 0; |
38a124f0 | 1516 | if (svp && *svp) { |
9289f461 RGS |
1517 | if (*svp != PERL_WARNHOOK_FATAL) |
1518 | to_dec = *svp; | |
cbbf8932 | 1519 | *svp = NULL; |
4633a7c4 | 1520 | } |
748a9306 LW |
1521 | } |
1522 | else { | |
708854f2 NC |
1523 | i = (I16)mg->mg_private; |
1524 | if (!i) { | |
84c7b88c | 1525 | i = whichsig_pvn(s, len); /* ...no, a brick */ |
58a26b12 | 1526 | mg->mg_private = (U16)i; |
708854f2 | 1527 | } |
86d86cad | 1528 | if (i <= 0) { |
84c7b88c BF |
1529 | if (sv) { |
1530 | SV *tmp = sv_newmortal(); | |
1531 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", | |
1532 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1533 | } | |
748a9306 LW |
1534 | return 0; |
1535 | } | |
2d4fcd5e AJ |
1536 | #ifdef HAS_SIGPROCMASK |
1537 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1538 | sigemptyset(&set); | |
1539 | sigaddset(&set,i); | |
1540 | sigprocmask(SIG_BLOCK, &set, &save); | |
1541 | ENTER; | |
9ff8e806 | 1542 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1543 | SAVEFREESV(save_sv); |
1544 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1545 | #endif | |
1546 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1547 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1548 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1549 | #endif |
23ada85b | 1550 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1551 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1552 | #endif |
2e34cc90 | 1553 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1554 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1555 | #endif |
2d4fcd5e | 1556 | to_dec = PL_psig_ptr[i]; |
38a124f0 NC |
1557 | if (sv) { |
1558 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); | |
1559 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ | |
79fd3822 NC |
1560 | |
1561 | /* Signals don't change name during the program's execution, so once | |
1562 | they're cached in the appropriate slot of PL_psig_name, they can | |
1563 | stay there. | |
1564 | ||
1565 | Ideally we'd find some way of making SVs at (C) compile time, or | |
1566 | at least, doing most of the work. */ | |
1567 | if (!PL_psig_name[i]) { | |
1568 | PL_psig_name[i] = newSVpvn(s, len); | |
1569 | SvREADONLY_on(PL_psig_name[i]); | |
1570 | } | |
38a124f0 | 1571 | } else { |
79fd3822 | 1572 | SvREFCNT_dec(PL_psig_name[i]); |
38a124f0 NC |
1573 | PL_psig_name[i] = NULL; |
1574 | PL_psig_ptr[i] = NULL; | |
1575 | } | |
748a9306 | 1576 | } |
38a124f0 | 1577 | if (sv && (isGV_with_GP(sv) || SvROK(sv))) { |
2d4fcd5e | 1578 | if (i) { |
5c1546dc | 1579 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1580 | } |
748a9306 | 1581 | else |
b37c2d43 | 1582 | *svp = SvREFCNT_inc_simple_NN(sv); |
38a124f0 | 1583 | } else { |
9dfa190b NC |
1584 | if (sv && SvOK(sv)) { |
1585 | s = SvPV_force(sv, len); | |
1586 | } else { | |
1587 | sv = NULL; | |
1588 | } | |
84c7b88c | 1589 | if (sv && memEQs(s, len,"IGNORE")) { |
9dfa190b | 1590 | if (i) { |
23ada85b | 1591 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
9dfa190b NC |
1592 | PL_sig_ignoring[i] = 1; |
1593 | (void)rsignal(i, PL_csighandlerp); | |
85b332e2 | 1594 | #else |
9dfa190b | 1595 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1596 | #endif |
9dfa190b | 1597 | } |
2d4fcd5e | 1598 | } |
84c7b88c | 1599 | else if (!sv || memEQs(s, len,"DEFAULT") || !len) { |
9dfa190b | 1600 | if (i) { |
2e34cc90 | 1601 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
9dfa190b NC |
1602 | PL_sig_defaulting[i] = 1; |
1603 | (void)rsignal(i, PL_csighandlerp); | |
2e34cc90 | 1604 | #else |
9dfa190b | 1605 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1606 | #endif |
9dfa190b NC |
1607 | } |
1608 | } | |
1609 | else { | |
1610 | /* | |
1611 | * We should warn if HINT_STRICT_REFS, but without | |
1612 | * access to a known hint bit in a known OP, we can't | |
1613 | * tell whether HINT_STRICT_REFS is in force or not. | |
1614 | */ | |
1615 | if (!strchr(s,':') && !strchr(s,'\'')) | |
1616 | Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"), | |
1617 | SV_GMAGIC); | |
1618 | if (i) | |
1619 | (void)rsignal(i, PL_csighandlerp); | |
1620 | else | |
1621 | *svp = SvREFCNT_inc_simple_NN(sv); | |
136e0459 | 1622 | } |
748a9306 | 1623 | } |
9dfa190b | 1624 | |
2d4fcd5e AJ |
1625 | #ifdef HAS_SIGPROCMASK |
1626 | if(i) | |
1627 | LEAVE; | |
1628 | #endif | |
ef8d46e8 | 1629 | SvREFCNT_dec(to_dec); |
79072805 LW |
1630 | return 0; |
1631 | } | |
64ca3a65 | 1632 | #endif /* !PERL_MICRO */ |
79072805 LW |
1633 | |
1634 | int | |
864dbfa3 | 1635 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1636 | { |
97aff369 | 1637 | dVAR; |
7918f24d | 1638 | PERL_ARGS_ASSERT_MAGIC_SETISA; |
8772537c | 1639 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1640 | |
89c14e2e | 1641 | /* Skip _isaelem because _isa will handle it shortly */ |
354b0578 | 1642 | if (PL_delaymagic & DM_ARRAY_ISA && mg->mg_type == PERL_MAGIC_isaelem) |
89c14e2e BB |
1643 | return 0; |
1644 | ||
0e446081 | 1645 | return magic_clearisa(NULL, mg); |
463ee0b2 LW |
1646 | } |
1647 | ||
0e446081 | 1648 | /* sv of NULL signifies that we're acting as magic_setisa. */ |
463ee0b2 | 1649 | int |
52b45067 RD |
1650 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1651 | { | |
1652 | dVAR; | |
1653 | HV* stash; | |
1654 | ||
7918f24d NC |
1655 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1656 | ||
52b45067 | 1657 | /* Bail out if destruction is going on */ |
627364f1 | 1658 | if(PL_phase == PERL_PHASE_DESTRUCT) return 0; |
52b45067 | 1659 | |
0e446081 NC |
1660 | if (sv) |
1661 | av_clear(MUTABLE_AV(sv)); | |
52b45067 | 1662 | |
6624142a FC |
1663 | if (SvTYPE(mg->mg_obj) != SVt_PVGV && SvSMAGICAL(mg->mg_obj)) |
1664 | /* This occurs with setisa_elem magic, which calls this | |
1665 | same function. */ | |
1666 | mg = mg_find(mg->mg_obj, PERL_MAGIC_isa); | |
1667 | ||
1668 | if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */ | |
1669 | SV **svp = AvARRAY((AV *)mg->mg_obj); | |
1670 | I32 items = AvFILLp((AV *)mg->mg_obj) + 1; | |
1671 | while (items--) { | |
1672 | stash = GvSTASH((GV *)*svp++); | |
1673 | if (stash && HvENAME(stash)) mro_isa_changed_in(stash); | |
1674 | } | |
1675 | ||
1676 | return 0; | |
1677 | } | |
1678 | ||
52b45067 | 1679 | stash = GvSTASH( |
6624142a | 1680 | (const GV *)mg->mg_obj |
52b45067 RD |
1681 | ); |
1682 | ||
00169e2c FC |
1683 | /* The stash may have been detached from the symbol table, so check its |
1684 | name before doing anything. */ | |
1685 | if (stash && HvENAME_get(stash)) | |
5562fa71 | 1686 | mro_isa_changed_in(stash); |
52b45067 RD |
1687 | |
1688 | return 0; | |
1689 | } | |
1690 | ||
1691 | int | |
864dbfa3 | 1692 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1693 | { |
85fbaab2 | 1694 | HV * const hv = MUTABLE_HV(LvTARG(sv)); |
6ff81951 | 1695 | I32 i = 0; |
7918f24d NC |
1696 | |
1697 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1698 | PERL_UNUSED_ARG(mg); |
7719e241 | 1699 | |
6ff81951 | 1700 | if (hv) { |
497b47a8 | 1701 | (void) hv_iterinit(hv); |
ad64d0ec | 1702 | if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
1b95d04f | 1703 | i = HvUSEDKEYS(hv); |
497b47a8 JH |
1704 | else { |
1705 | while (hv_iternext(hv)) | |
1706 | i++; | |
1707 | } | |
6ff81951 GS |
1708 | } |
1709 | ||
1710 | sv_setiv(sv, (IV)i); | |
1711 | return 0; | |
1712 | } | |
1713 | ||
1714 | int | |
864dbfa3 | 1715 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1716 | { |
7918f24d | 1717 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1718 | PERL_UNUSED_ARG(mg); |
946ec16e | 1719 | if (LvTARG(sv)) { |
85fbaab2 | 1720 | hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv)); |
946ec16e | 1721 | } |
1722 | return 0; | |
ac27b0f5 | 1723 | } |
946ec16e | 1724 | |
efaf3674 DM |
1725 | /* |
1726 | =for apidoc magic_methcall | |
1727 | ||
1728 | Invoke a magic method (like FETCH). | |
1729 | ||
2baee27b FC |
1730 | C<sv> and C<mg> are the tied thingy and the tie magic. |
1731 | ||
1732 | C<meth> is the name of the method to call. | |
1733 | ||
1734 | C<argc> is the number of args (in addition to $self) to pass to the method. | |
1735 | ||
1736 | The C<flags> can be: | |
1737 | ||
1738 | G_DISCARD invoke method with G_DISCARD flag and don't | |
1739 | return a value | |
1740 | G_UNDEF_FILL fill the stack with argc pointers to | |
1741 | PL_sv_undef | |
1742 | ||
1743 | The arguments themselves are any values following the C<flags> argument. | |
efaf3674 DM |
1744 | |
1745 | Returns the SV (if any) returned by the method, or NULL on failure. | |
1746 | ||
1747 | ||
1748 | =cut | |
1749 | */ | |
1750 | ||
1751 | SV* | |
36925d9e | 1752 | Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, SV *meth, U32 flags, |
046b0c7d | 1753 | U32 argc, ...) |
a0d0e21e | 1754 | { |
97aff369 | 1755 | dVAR; |
a0d0e21e | 1756 | dSP; |
efaf3674 | 1757 | SV* ret = NULL; |
463ee0b2 | 1758 | |
7918f24d NC |
1759 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1760 | ||
efaf3674 | 1761 | ENTER; |
d1d7a15d NC |
1762 | |
1763 | if (flags & G_WRITING_TO_STDERR) { | |
1764 | SAVETMPS; | |
1765 | ||
1766 | save_re_context(); | |
1767 | SAVESPTR(PL_stderrgv); | |
1768 | PL_stderrgv = NULL; | |
1769 | } | |
1770 | ||
efaf3674 | 1771 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1772 | PUSHMARK(SP); |
efaf3674 | 1773 | |
67549bd2 NC |
1774 | EXTEND(SP, argc+1); |
1775 | PUSHs(SvTIED_obj(sv, mg)); | |
1776 | if (flags & G_UNDEF_FILL) { | |
1777 | while (argc--) { | |
efaf3674 | 1778 | PUSHs(&PL_sv_undef); |
93965878 | 1779 | } |
67549bd2 | 1780 | } else if (argc > 0) { |
046b0c7d NC |
1781 | va_list args; |
1782 | va_start(args, argc); | |
1783 | ||
1784 | do { | |
1785 | SV *const sv = va_arg(args, SV *); | |
1786 | PUSHs(sv); | |
1787 | } while (--argc); | |
1788 | ||
1789 | va_end(args); | |
88e89b8a | 1790 | } |
463ee0b2 | 1791 | PUTBACK; |
efaf3674 | 1792 | if (flags & G_DISCARD) { |
36925d9e | 1793 | call_sv(meth, G_SCALAR|G_DISCARD|G_METHOD_NAMED); |
efaf3674 DM |
1794 | } |
1795 | else { | |
36925d9e | 1796 | if (call_sv(meth, G_SCALAR|G_METHOD_NAMED)) |
efaf3674 DM |
1797 | ret = *PL_stack_sp--; |
1798 | } | |
1799 | POPSTACK; | |
d1d7a15d NC |
1800 | if (flags & G_WRITING_TO_STDERR) |
1801 | FREETMPS; | |
efaf3674 DM |
1802 | LEAVE; |
1803 | return ret; | |
1804 | } | |
1805 | ||
efaf3674 | 1806 | /* wrapper for magic_methcall that creates the first arg */ |
463ee0b2 | 1807 | |
efaf3674 | 1808 | STATIC SV* |
36925d9e | 1809 | S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, SV *meth, U32 flags, |
efaf3674 DM |
1810 | int n, SV *val) |
1811 | { | |
1812 | dVAR; | |
1813 | SV* arg1 = NULL; | |
1814 | ||
1815 | PERL_ARGS_ASSERT_MAGIC_METHCALL1; | |
1816 | ||
1817 | if (mg->mg_ptr) { | |
1818 | if (mg->mg_len >= 0) { | |
db4b3a1d | 1819 | arg1 = newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
efaf3674 DM |
1820 | } |
1821 | else if (mg->mg_len == HEf_SVKEY) | |
1822 | arg1 = MUTABLE_SV(mg->mg_ptr); | |
1823 | } | |
1824 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { | |
db4b3a1d | 1825 | arg1 = newSViv((IV)(mg->mg_len)); |
efaf3674 DM |
1826 | sv_2mortal(arg1); |
1827 | } | |
1828 | if (!arg1) { | |
046b0c7d | 1829 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n - 1, val); |
efaf3674 | 1830 | } |
046b0c7d | 1831 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n, arg1, val); |
946ec16e | 1832 | } |
1833 | ||
76e3520e | 1834 | STATIC int |
36925d9e | 1835 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, SV *meth) |
a0d0e21e | 1836 | { |
efaf3674 DM |
1837 | dVAR; |
1838 | SV* ret; | |
463ee0b2 | 1839 | |
7918f24d NC |
1840 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1841 | ||
efaf3674 DM |
1842 | ret = magic_methcall1(sv, mg, meth, 0, 1, NULL); |
1843 | if (ret) | |
1844 | sv_setsv(sv, ret); | |
a0d0e21e LW |
1845 | return 0; |
1846 | } | |
463ee0b2 | 1847 | |
a0d0e21e | 1848 | int |
864dbfa3 | 1849 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1850 | { |
7918f24d NC |
1851 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1852 | ||
fd69380d | 1853 | if (mg->mg_type == PERL_MAGIC_tiedelem) |
a0d0e21e | 1854 | mg->mg_flags |= MGf_GSKIP; |
36925d9e | 1855 | magic_methpack(sv,mg,SV_CONST(FETCH)); |
463ee0b2 LW |
1856 | return 0; |
1857 | } | |
1858 | ||
1859 | int | |
864dbfa3 | 1860 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1861 | { |
efaf3674 | 1862 | dVAR; |
b112cff9 DM |
1863 | MAGIC *tmg; |
1864 | SV *val; | |
7918f24d NC |
1865 | |
1866 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1867 | ||
b112cff9 DM |
1868 | /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to |
1869 | * STORE() is not $val, but rather a PVLV (the sv in this call), whose | |
1870 | * public flags indicate its value based on copying from $val. Doing | |
1871 | * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us. | |
1872 | * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes | |
1873 | * wrong if $val happened to be tainted, as sv hasn't got magic | |
1874 | * enabled, even though taint magic is in the chain. In which case, | |
1875 | * fake up a temporary tainted value (this is easier than temporarily | |
1876 | * re-enabling magic on sv). */ | |
1877 | ||
284167a5 | 1878 | if (TAINTING_get && (tmg = mg_find(sv, PERL_MAGIC_taint)) |
b112cff9 DM |
1879 | && (tmg->mg_len & 1)) |
1880 | { | |
1881 | val = sv_mortalcopy(sv); | |
1882 | SvTAINTED_on(val); | |
1883 | } | |
1884 | else | |
1885 | val = sv; | |
1886 | ||
36925d9e | 1887 | magic_methcall1(sv, mg, SV_CONST(STORE), G_DISCARD, 2, val); |
463ee0b2 LW |
1888 | return 0; |
1889 | } | |
1890 | ||
1891 | int | |
864dbfa3 | 1892 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1893 | { |
7918f24d NC |
1894 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1895 | ||
4c13be3f | 1896 | if (mg->mg_type == PERL_MAGIC_tiedscalar) return 0; |
36925d9e | 1897 | return magic_methpack(sv,mg,SV_CONST(DELETE)); |
a0d0e21e | 1898 | } |
463ee0b2 | 1899 | |
93965878 NIS |
1900 | |
1901 | U32 | |
864dbfa3 | 1902 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1903 | { |
efaf3674 | 1904 | dVAR; |
22846ab4 | 1905 | I32 retval = 0; |
efaf3674 | 1906 | SV* retsv; |
93965878 | 1907 | |
7918f24d NC |
1908 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1909 | ||
36925d9e | 1910 | retsv = magic_methcall1(sv, mg, SV_CONST(FETCHSIZE), 0, 1, NULL); |
efaf3674 DM |
1911 | if (retsv) { |
1912 | retval = SvIV(retsv)-1; | |
22846ab4 AB |
1913 | if (retval < -1) |
1914 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1915 | } |
22846ab4 | 1916 | return (U32) retval; |
93965878 NIS |
1917 | } |
1918 | ||
cea2e8a9 GS |
1919 | int |
1920 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1921 | { |
efaf3674 | 1922 | dVAR; |
463ee0b2 | 1923 | |
7918f24d NC |
1924 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1925 | ||
36925d9e | 1926 | Perl_magic_methcall(aTHX_ sv, mg, SV_CONST(CLEAR), G_DISCARD, 0); |
463ee0b2 LW |
1927 | return 0; |
1928 | } | |
1929 | ||
1930 | int | |
864dbfa3 | 1931 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1932 | { |
efaf3674 DM |
1933 | dVAR; |
1934 | SV* ret; | |
463ee0b2 | 1935 | |
7918f24d NC |
1936 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1937 | ||
36925d9e RZ |
1938 | ret = SvOK(key) ? Perl_magic_methcall(aTHX_ sv, mg, SV_CONST(NEXTKEY), 0, 1, key) |
1939 | : Perl_magic_methcall(aTHX_ sv, mg, SV_CONST(FIRSTKEY), 0, 0); | |
efaf3674 DM |
1940 | if (ret) |
1941 | sv_setsv(key,ret); | |
79072805 LW |
1942 | return 0; |
1943 | } | |
1944 | ||
1945 | int | |
1146e912 | 1946 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1947 | { |
7918f24d NC |
1948 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1949 | ||
36925d9e | 1950 | return magic_methpack(sv,mg,SV_CONST(EXISTS)); |
ac27b0f5 | 1951 | } |
a0d0e21e | 1952 | |
a3bcc51e TP |
1953 | SV * |
1954 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1955 | { | |
efaf3674 | 1956 | dVAR; |
5fcbf73d | 1957 | SV *retval; |
ad64d0ec NC |
1958 | SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg); |
1959 | HV * const pkg = SvSTASH((const SV *)SvRV(tied)); | |
a3bcc51e | 1960 | |
7918f24d NC |
1961 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
1962 | ||
a3bcc51e TP |
1963 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1964 | SV *key; | |
bfcb3514 | 1965 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1966 | /* we are in an iteration so the hash cannot be empty */ |
1967 | return &PL_sv_yes; | |
1968 | /* no xhv_eiter so now use FIRSTKEY */ | |
1969 | key = sv_newmortal(); | |
ad64d0ec | 1970 | magic_nextpack(MUTABLE_SV(hv), mg, key); |
bfcb3514 | 1971 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1972 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1973 | } | |
1974 | ||
1975 | /* there is a SCALAR method that we can call */ | |
36925d9e | 1976 | retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(hv), mg, SV_CONST(SCALAR), 0, 0); |
efaf3674 | 1977 | if (!retval) |
5fcbf73d | 1978 | retval = &PL_sv_undef; |
a3bcc51e TP |
1979 | return retval; |
1980 | } | |
1981 | ||
a0d0e21e | 1982 | int |
864dbfa3 | 1983 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1984 | { |
97aff369 | 1985 | dVAR; |
8772537c AL |
1986 | GV * const gv = PL_DBline; |
1987 | const I32 i = SvTRUE(sv); | |
1988 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 1989 | atoi(MgPV_nolen_const(mg)), FALSE); |
7918f24d NC |
1990 | |
1991 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
1992 | ||
8772537c AL |
1993 | if (svp && SvIOKp(*svp)) { |
1994 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
1995 | if (o) { | |
7bbbc3c0 NC |
1996 | #ifdef PERL_DEBUG_READONLY_OPS |
1997 | Slab_to_rw(OpSLAB(o)); | |
1998 | #endif | |
8772537c AL |
1999 | /* set or clear breakpoint in the relevant control op */ |
2000 | if (i) | |
2001 | o->op_flags |= OPf_SPECIAL; | |
2002 | else | |
2003 | o->op_flags &= ~OPf_SPECIAL; | |
7bbbc3c0 NC |
2004 | #ifdef PERL_DEBUG_READONLY_OPS |
2005 | Slab_to_ro(OpSLAB(o)); | |
2006 | #endif | |
8772537c | 2007 | } |
5df8de69 | 2008 | } |
79072805 LW |
2009 | return 0; |
2010 | } | |
2011 | ||
2012 | int | |
8772537c | 2013 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 2014 | { |
97aff369 | 2015 | dVAR; |
502c6561 | 2016 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2017 | |
2018 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
2019 | ||
83bf042f | 2020 | if (obj) { |
e1dccc0d | 2021 | sv_setiv(sv, AvFILL(obj)); |
83bf042f NC |
2022 | } else { |
2023 | SvOK_off(sv); | |
2024 | } | |
79072805 LW |
2025 | return 0; |
2026 | } | |
2027 | ||
2028 | int | |
864dbfa3 | 2029 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2030 | { |
97aff369 | 2031 | dVAR; |
502c6561 | 2032 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2033 | |
2034 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
2035 | ||
83bf042f | 2036 | if (obj) { |
e1dccc0d | 2037 | av_fill(obj, SvIV(sv)); |
83bf042f | 2038 | } else { |
a2a5de95 NC |
2039 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
2040 | "Attempt to set length of freed array"); | |
83bf042f NC |
2041 | } |
2042 | return 0; | |
2043 | } | |
2044 | ||
2045 | int | |
83f29afa VP |
2046 | Perl_magic_cleararylen_p(pTHX_ SV *sv, MAGIC *mg) |
2047 | { | |
2048 | dVAR; | |
2049 | ||
2050 | PERL_ARGS_ASSERT_MAGIC_CLEARARYLEN_P; | |
2051 | PERL_UNUSED_ARG(sv); | |
2052 | ||
2053 | /* Reset the iterator when the array is cleared */ | |
3565fbf3 VP |
2054 | #if IVSIZE == I32SIZE |
2055 | *((IV *) &(mg->mg_len)) = 0; | |
2056 | #else | |
83f29afa VP |
2057 | if (mg->mg_ptr) |
2058 | *((IV *) mg->mg_ptr) = 0; | |
3565fbf3 | 2059 | #endif |
83f29afa VP |
2060 | |
2061 | return 0; | |
2062 | } | |
2063 | ||
2064 | int | |
83bf042f NC |
2065 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) |
2066 | { | |
97aff369 | 2067 | dVAR; |
7918f24d NC |
2068 | |
2069 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; | |
53c1dcc0 | 2070 | PERL_UNUSED_ARG(sv); |
7918f24d | 2071 | |
94f3782b DM |
2072 | /* during global destruction, mg_obj may already have been freed */ |
2073 | if (PL_in_clean_all) | |
1ea47f64 | 2074 | return 0; |
94f3782b | 2075 | |
83bf042f NC |
2076 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
2077 | ||
2078 | if (mg) { | |
2079 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
2080 | reference. Hence the we (the array) are about to go away with it | |
2081 | still pointing at us. Clear its pointer, else it would be pointing | |
2082 | at free memory. See the comment in sv_magic about reference loops, | |
2083 | and why it can't own a reference to us. */ | |
2084 | mg->mg_obj = 0; | |
2085 | } | |
a0d0e21e LW |
2086 | return 0; |
2087 | } | |
2088 | ||
2089 | int | |
864dbfa3 | 2090 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2091 | { |
97aff369 | 2092 | dVAR; |
16eb5365 | 2093 | SV* const lsv = LvTARG(sv); |
96c2a8ff | 2094 | MAGIC * const found = mg_find_mglob(lsv); |
7918f24d NC |
2095 | |
2096 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
16eb5365 | 2097 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2098 | |
6174b39a FC |
2099 | if (found && found->mg_len != -1) { |
2100 | STRLEN i = found->mg_len; | |
7e2040f0 | 2101 | if (DO_UTF8(lsv)) |
6174b39a FC |
2102 | i = sv_pos_b2u_flags(lsv, i, SV_GMAGIC|SV_CONST_RETURN); |
2103 | sv_setuv(sv, i); | |
a0d0e21e | 2104 | return 0; |
a0d0e21e | 2105 | } |
0c34ef67 | 2106 | SvOK_off(sv); |
a0d0e21e LW |
2107 | return 0; |
2108 | } | |
2109 | ||
2110 | int | |
864dbfa3 | 2111 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2112 | { |
97aff369 | 2113 | dVAR; |
16eb5365 | 2114 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
2115 | SSize_t pos; |
2116 | STRLEN len; | |
c00206c8 | 2117 | STRLEN ulen = 0; |
53d44271 | 2118 | MAGIC* found; |
aec43834 | 2119 | const char *s; |
a0d0e21e | 2120 | |
7918f24d | 2121 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
16eb5365 | 2122 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2123 | |
96c2a8ff | 2124 | found = mg_find_mglob(lsv); |
3881461a | 2125 | if (!found) { |
a0d0e21e LW |
2126 | if (!SvOK(sv)) |
2127 | return 0; | |
96c2a8ff | 2128 | found = sv_magicext_mglob(lsv); |
a0d0e21e LW |
2129 | } |
2130 | else if (!SvOK(sv)) { | |
3881461a | 2131 | found->mg_len = -1; |
a0d0e21e LW |
2132 | return 0; |
2133 | } | |
aec43834 | 2134 | s = SvPV_const(lsv, len); |
a0d0e21e | 2135 | |
e1dccc0d | 2136 | pos = SvIV(sv); |
a0ed51b3 | 2137 | |
7e2040f0 | 2138 | if (DO_UTF8(lsv)) { |
aec43834 | 2139 | ulen = sv_or_pv_len_utf8(lsv, s, len); |
a0ed51b3 LW |
2140 | if (ulen) |
2141 | len = ulen; | |
a0ed51b3 LW |
2142 | } |
2143 | ||
a0d0e21e LW |
2144 | if (pos < 0) { |
2145 | pos += len; | |
2146 | if (pos < 0) | |
2147 | pos = 0; | |
2148 | } | |
eb160463 | 2149 | else if (pos > (SSize_t)len) |
a0d0e21e | 2150 | pos = len; |
a0ed51b3 LW |
2151 | |
2152 | if (ulen) { | |
4ddea69a | 2153 | pos = sv_or_pv_pos_u2b(lsv, s, pos, 0); |
a0ed51b3 | 2154 | } |
727405f8 | 2155 | |
3881461a AL |
2156 | found->mg_len = pos; |
2157 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 2158 | |
79072805 LW |
2159 | return 0; |
2160 | } | |
2161 | ||
2162 | int | |
864dbfa3 | 2163 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2164 | { |
2165 | STRLEN len; | |
35a4481c | 2166 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2167 | const char * const tmps = SvPV_const(lsv,len); |
777f7c56 EB |
2168 | STRLEN offs = LvTARGOFF(sv); |
2169 | STRLEN rem = LvTARGLEN(sv); | |
83f78d1a FC |
2170 | const bool negoff = LvFLAGS(sv) & 1; |
2171 | const bool negrem = LvFLAGS(sv) & 2; | |
7918f24d NC |
2172 | |
2173 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2174 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2175 | |
83f78d1a | 2176 | if (!translate_substr_offsets( |
4ddea69a | 2177 | SvUTF8(lsv) ? sv_or_pv_len_utf8(lsv, tmps, len) : len, |
83f78d1a FC |
2178 | negoff ? -(IV)offs : (IV)offs, !negoff, |
2179 | negrem ? -(IV)rem : (IV)rem, !negrem, &offs, &rem | |
2180 | )) { | |
2181 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string"); | |
2182 | sv_setsv_nomg(sv, &PL_sv_undef); | |
2183 | return 0; | |
2184 | } | |
2185 | ||
9aa983d2 | 2186 | if (SvUTF8(lsv)) |
4ddea69a | 2187 | offs = sv_or_pv_pos_u2b(lsv, tmps, offs, &rem); |
1c900557 | 2188 | sv_setpvn(sv, tmps + offs, rem); |
9aa983d2 | 2189 | if (SvUTF8(lsv)) |
2ef4b674 | 2190 | SvUTF8_on(sv); |
6ff81951 GS |
2191 | return 0; |
2192 | } | |
2193 | ||
2194 | int | |
864dbfa3 | 2195 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2196 | { |
97aff369 | 2197 | dVAR; |
83f78d1a | 2198 | STRLEN len, lsv_len, oldtarglen, newtarglen; |
5fcbf73d | 2199 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2200 | SV * const lsv = LvTARG(sv); |
777f7c56 EB |
2201 | STRLEN lvoff = LvTARGOFF(sv); |
2202 | STRLEN lvlen = LvTARGLEN(sv); | |
83f78d1a FC |
2203 | const bool negoff = LvFLAGS(sv) & 1; |
2204 | const bool neglen = LvFLAGS(sv) & 2; | |
7918f24d NC |
2205 | |
2206 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2207 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2208 | |
a74fb2cd FC |
2209 | SvGETMAGIC(lsv); |
2210 | if (SvROK(lsv)) | |
2211 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), | |
2212 | "Attempt to use reference as lvalue in substr" | |
2213 | ); | |
fc061ed8 FC |
2214 | SvPV_force_nomg(lsv,lsv_len); |
2215 | if (SvUTF8(lsv)) lsv_len = sv_len_utf8_nomg(lsv); | |
83f78d1a FC |
2216 | if (!translate_substr_offsets( |
2217 | lsv_len, | |
2218 | negoff ? -(IV)lvoff : (IV)lvoff, !negoff, | |
2219 | neglen ? -(IV)lvlen : (IV)lvlen, !neglen, &lvoff, &lvlen | |
2220 | )) | |
2221 | Perl_croak(aTHX_ "substr outside of string"); | |
2222 | oldtarglen = lvlen; | |
1aa99e6b | 2223 | if (DO_UTF8(sv)) { |
73a087f0 | 2224 | sv_utf8_upgrade_nomg(lsv); |
d931b1be | 2225 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
a74fb2cd | 2226 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
7a385470 | 2227 | newtarglen = sv_or_pv_len_utf8(sv, tmps, len); |
9aa983d2 JH |
2228 | SvUTF8_on(lsv); |
2229 | } | |
0d336106 | 2230 | else if (SvUTF8(lsv)) { |
5fcbf73d | 2231 | const char *utf8; |
d931b1be | 2232 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
83f78d1a | 2233 | newtarglen = len; |
5fcbf73d | 2234 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
a74fb2cd | 2235 | sv_insert_flags(lsv, lvoff, lvlen, utf8, len, 0); |
5fcbf73d | 2236 | Safefree(utf8); |
1aa99e6b | 2237 | } |
b76f3ce2 | 2238 | else { |
a74fb2cd | 2239 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2240 | newtarglen = len; |
b76f3ce2 | 2241 | } |
83f78d1a FC |
2242 | if (!neglen) LvTARGLEN(sv) = newtarglen; |
2243 | if (negoff) LvTARGOFF(sv) += newtarglen - oldtarglen; | |
b76f3ce2 | 2244 | |
79072805 LW |
2245 | return 0; |
2246 | } | |
2247 | ||
2248 | int | |
864dbfa3 | 2249 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2250 | { |
97aff369 | 2251 | dVAR; |
7918f24d NC |
2252 | |
2253 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; | |
8772537c | 2254 | PERL_UNUSED_ARG(sv); |
9a9b5ec9 DM |
2255 | #ifdef NO_TAINT_SUPPORT |
2256 | PERL_UNUSED_ARG(mg); | |
2257 | #endif | |
7918f24d | 2258 | |
27cc343c | 2259 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2260 | return 0; |
2261 | } | |
2262 | ||
2263 | int | |
864dbfa3 | 2264 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2265 | { |
97aff369 | 2266 | dVAR; |
7918f24d NC |
2267 | |
2268 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; | |
8772537c | 2269 | PERL_UNUSED_ARG(sv); |
7918f24d | 2270 | |
b01e650a | 2271 | /* update taint status */ |
284167a5 | 2272 | if (TAINT_get) |
b01e650a DM |
2273 | mg->mg_len |= 1; |
2274 | else | |
2275 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2276 | return 0; |
2277 | } | |
2278 | ||
2279 | int | |
864dbfa3 | 2280 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2281 | { |
35a4481c | 2282 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2283 | |
2284 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2285 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2286 | |
6136c704 AL |
2287 | if (lsv) |
2288 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2289 | else | |
0c34ef67 | 2290 | SvOK_off(sv); |
6ff81951 | 2291 | |
6ff81951 GS |
2292 | return 0; |
2293 | } | |
2294 | ||
2295 | int | |
864dbfa3 | 2296 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2297 | { |
7918f24d | 2298 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2299 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2300 | do_vecset(sv); /* XXX slurp this routine */ |
2301 | return 0; | |
2302 | } | |
2303 | ||
13733cde FC |
2304 | SV * |
2305 | Perl_defelem_target(pTHX_ SV *sv, MAGIC *mg) | |
5f05dabc | 2306 | { |
97aff369 | 2307 | dVAR; |
a0714e2c | 2308 | SV *targ = NULL; |
13733cde FC |
2309 | PERL_ARGS_ASSERT_DEFELEM_TARGET; |
2310 | if (!mg) mg = mg_find(sv, PERL_MAGIC_defelem); | |
2311 | assert(mg); | |
5f05dabc | 2312 | if (LvTARGLEN(sv)) { |
68dc0745 | 2313 | if (mg->mg_obj) { |
8772537c | 2314 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2315 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0); |
6d822dc4 MS |
2316 | if (he) |
2317 | targ = HeVAL(he); | |
68dc0745 | 2318 | } |
2319 | else { | |
502c6561 | 2320 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
68dc0745 | 2321 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2322 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2323 | } | |
46da273f | 2324 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2325 | /* somebody else defined it for us */ |
2326 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2327 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2328 | LvTARGLEN(sv) = 0; |
2329 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2330 | mg->mg_obj = NULL; |
68dc0745 | 2331 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2332 | } | |
13733cde | 2333 | return targ; |
5f05dabc | 2334 | } |
71be2cbc | 2335 | else |
13733cde FC |
2336 | return LvTARG(sv); |
2337 | } | |
2338 | ||
2339 | int | |
2340 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) | |
2341 | { | |
2342 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2343 | ||
2344 | sv_setsv(sv, defelem_target(sv, mg)); | |
71be2cbc | 2345 | return 0; |
2346 | } | |
2347 | ||
2348 | int | |
864dbfa3 | 2349 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2350 | { |
7918f24d | 2351 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2352 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2353 | if (LvTARGLEN(sv)) |
68dc0745 | 2354 | vivify_defelem(sv); |
2355 | if (LvTARG(sv)) { | |
5f05dabc | 2356 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2357 | SvSETMAGIC(LvTARG(sv)); |
2358 | } | |
5f05dabc | 2359 | return 0; |
2360 | } | |
2361 | ||
71be2cbc | 2362 | void |
864dbfa3 | 2363 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2364 | { |
97aff369 | 2365 | dVAR; |
74e13ce4 | 2366 | MAGIC *mg; |
a0714e2c | 2367 | SV *value = NULL; |
71be2cbc | 2368 | |
7918f24d NC |
2369 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2370 | ||
14befaf4 | 2371 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2372 | return; |
68dc0745 | 2373 | if (mg->mg_obj) { |
8772537c | 2374 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2375 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0); |
6d822dc4 MS |
2376 | if (he) |
2377 | value = HeVAL(he); | |
3280af22 | 2378 | if (!value || value == &PL_sv_undef) |
be2597df | 2379 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2380 | } |
68dc0745 | 2381 | else { |
502c6561 | 2382 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
5aabfad6 | 2383 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2384 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2385 | else { |
d4c19fe8 | 2386 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2387 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2388 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2389 | } |
2390 | } | |
b37c2d43 | 2391 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2392 | SvREFCNT_dec(LvTARG(sv)); |
2393 | LvTARG(sv) = value; | |
71be2cbc | 2394 | LvTARGLEN(sv) = 0; |
68dc0745 | 2395 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2396 | mg->mg_obj = NULL; |
68dc0745 | 2397 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2398 | } |
2399 | ||
2400 | int | |
864dbfa3 | 2401 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2402 | { |
7918f24d | 2403 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
5648c0ae DM |
2404 | Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj)); |
2405 | return 0; | |
810b8aa5 GS |
2406 | } |
2407 | ||
2408 | int | |
864dbfa3 | 2409 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2410 | { |
7918f24d | 2411 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2412 | PERL_UNUSED_CONTEXT; |
0177730e | 2413 | PERL_UNUSED_ARG(sv); |
565764a8 | 2414 | mg->mg_len = -1; |
93a17b20 LW |
2415 | return 0; |
2416 | } | |
2417 | ||
2418 | int | |
864dbfa3 | 2419 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2420 | { |
35a4481c | 2421 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2422 | |
7918f24d NC |
2423 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2424 | ||
79072805 | 2425 | if (uf && uf->uf_set) |
24f81a43 | 2426 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2427 | return 0; |
2428 | } | |
2429 | ||
c277df42 | 2430 | int |
faf82a0b AE |
2431 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2432 | { | |
488344d2 | 2433 | const char type = mg->mg_type; |
7918f24d NC |
2434 | |
2435 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2436 | ||
488344d2 NC |
2437 | if (type == PERL_MAGIC_qr) { |
2438 | } else if (type == PERL_MAGIC_bm) { | |
2439 | SvTAIL_off(sv); | |
2440 | SvVALID_off(sv); | |
2441 | } else { | |
2442 | assert(type == PERL_MAGIC_fm); | |
488344d2 NC |
2443 | } |
2444 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2445 | } |
2446 | ||
7a4c00b4 | 2447 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2448 | int |
864dbfa3 | 2449 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2450 | { |
7918f24d NC |
2451 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2452 | ||
bbce6d69 | 2453 | /* |
838b5b74 | 2454 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2455 | * and vanished with a faint plop. |
2456 | */ | |
96a5add6 | 2457 | PERL_UNUSED_CONTEXT; |
8772537c | 2458 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2459 | if (mg->mg_ptr) { |
2460 | Safefree(mg->mg_ptr); | |
2461 | mg->mg_ptr = NULL; | |
565764a8 | 2462 | mg->mg_len = -1; |
7a4c00b4 | 2463 | } |
bbce6d69 | 2464 | return 0; |
2465 | } | |
7a4c00b4 | 2466 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2467 | |
7e8c5dac HS |
2468 | /* Just clear the UTF-8 cache data. */ |
2469 | int | |
2470 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2471 | { | |
7918f24d | 2472 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2473 | PERL_UNUSED_CONTEXT; |
8772537c | 2474 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2475 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2476 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2477 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2478 | return 0; | |
2479 | } | |
2480 | ||
bbce6d69 | 2481 | int |
864dbfa3 | 2482 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2483 | { |
97aff369 | 2484 | dVAR; |
eb578fdb KW |
2485 | const char *s; |
2486 | I32 paren; | |
2487 | const REGEXP * rx; | |
2fdbfb4d | 2488 | const char * const remaining = mg->mg_ptr + 1; |
79072805 | 2489 | I32 i; |
8990e307 | 2490 | STRLEN len; |
125b9982 | 2491 | MAGIC *tmg; |
2fdbfb4d | 2492 | |
7918f24d NC |
2493 | PERL_ARGS_ASSERT_MAGIC_SET; |
2494 | ||
79072805 | 2495 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
2496 | case '\015': /* $^MATCH */ |
2497 | if (strEQ(remaining, "ATCH")) | |
2498 | goto do_match; | |
2499 | case '`': /* ${^PREMATCH} caught below */ | |
2500 | do_prematch: | |
f1b875a0 | 2501 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
2502 | goto setparen; |
2503 | case '\'': /* ${^POSTMATCH} caught below */ | |
2504 | do_postmatch: | |
f1b875a0 | 2505 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
2506 | goto setparen; |
2507 | case '&': | |
2508 | do_match: | |
f1b875a0 | 2509 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d AB |
2510 | goto setparen; |
2511 | case '1': case '2': case '3': case '4': | |
2512 | case '5': case '6': case '7': case '8': case '9': | |
104a8018 | 2513 | paren = atoi(mg->mg_ptr); |
2fdbfb4d | 2514 | setparen: |
1e05feb3 | 2515 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9bad346 | 2516 | setparen_got_rx: |
2fdbfb4d | 2517 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
1e05feb3 | 2518 | } else { |
2fdbfb4d AB |
2519 | /* Croak with a READONLY error when a numbered match var is |
2520 | * set without a previous pattern match. Unless it's C<local $1> | |
2521 | */ | |
d9bad346 | 2522 | croakparen: |
2fdbfb4d | 2523 | if (!PL_localizing) { |
cb077ed2 | 2524 | Perl_croak_no_modify(); |
2fdbfb4d AB |
2525 | } |
2526 | } | |
9b9e0be4 | 2527 | break; |
748a9306 | 2528 | case '\001': /* ^A */ |
f2da823f FC |
2529 | if (SvOK(sv)) sv_copypv(PL_bodytarget, sv); |
2530 | else SvOK_off(PL_bodytarget); | |
64eff8b7 DM |
2531 | FmLINES(PL_bodytarget) = 0; |
2532 | if (SvPOK(PL_bodytarget)) { | |
2533 | char *s = SvPVX(PL_bodytarget); | |
2534 | while ( ((s = strchr(s, '\n'))) ) { | |
2535 | FmLINES(PL_bodytarget)++; | |
2536 | s++; | |
2537 | } | |
2538 | } | |
125b9982 | 2539 | /* mg_set() has temporarily made sv non-magical */ |
284167a5 | 2540 | if (TAINTING_get) { |
125b9982 NT |
2541 | if ((tmg = mg_find(sv,PERL_MAGIC_taint)) && tmg->mg_len & 1) |
2542 | SvTAINTED_on(PL_bodytarget); | |
2543 | else | |
2544 | SvTAINTED_off(PL_bodytarget); | |
2545 | } | |
748a9306 | 2546 | break; |
49460fe6 | 2547 | case '\003': /* ^C */ |
f2338a2e | 2548 | PL_minus_c = cBOOL(SvIV(sv)); |
49460fe6 NIS |
2549 | break; |
2550 | ||
79072805 | 2551 | case '\004': /* ^D */ |
b4ab917c | 2552 | #ifdef DEBUGGING |
b83604b4 | 2553 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2554 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
a58fb6f9 CS |
2555 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
2556 | dump_all_perl(!DEBUG_B_TEST); | |
b4ab917c | 2557 | #else |
38ab35f8 | 2558 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2559 | #endif |
79072805 | 2560 | break; |
28f23441 | 2561 | case '\005': /* ^E */ |
d0063567 | 2562 | if (*(mg->mg_ptr+1) == '\0') { |
e37778c2 | 2563 | #ifdef VMS |
38ab35f8 | 2564 | set_vaxc_errno(SvIV(sv)); |
e37778c2 NC |
2565 | #else |
2566 | # ifdef WIN32 | |
d0063567 | 2567 | SetLastError( SvIV(sv) ); |
e37778c2 NC |
2568 | # else |
2569 | # ifdef OS2 | |
38ab35f8 | 2570 | os2_setsyserrno(SvIV(sv)); |
e37778c2 | 2571 | # else |
d0063567 | 2572 | /* will anyone ever use this? */ |
38ab35f8 | 2573 | SETERRNO(SvIV(sv), 4); |
048c1ddf IZ |
2574 | # endif |
2575 | # endif | |
22fae026 | 2576 | #endif |
d0063567 DK |
2577 | } |
2578 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
ef8d46e8 | 2579 | SvREFCNT_dec(PL_encoding); |
d0063567 DK |
2580 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2581 | PL_encoding = newSVsv(sv); | |
2582 | } | |
2583 | else { | |
a0714e2c | 2584 | PL_encoding = NULL; |
d0063567 DK |
2585 | } |
2586 | } | |
2587 | break; | |
79072805 | 2588 | case '\006': /* ^F */ |
38ab35f8 | 2589 | PL_maxsysfd = SvIV(sv); |
79072805 | 2590 | break; |
a0d0e21e | 2591 | case '\010': /* ^H */ |
38ab35f8 | 2592 | PL_hints = SvIV(sv); |
a0d0e21e | 2593 | break; |
9d116dd7 | 2594 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2595 | Safefree(PL_inplace); |
bd61b366 | 2596 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2597 | break; |
d9bad346 FC |
2598 | case '\016': /* ^N */ |
2599 | if (PL_curpm && (rx = PM_GETRE(PL_curpm)) | |
2600 | && (paren = RX_LASTCLOSEPAREN(rx))) goto setparen_got_rx; | |
2601 | goto croakparen; | |
28f23441 | 2602 | case '\017': /* ^O */ |
ac27b0f5 | 2603 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2604 | Safefree(PL_osname); |
bd61b366 | 2605 | PL_osname = NULL; |
3511154c DM |
2606 | if (SvOK(sv)) { |
2607 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2608 | PL_osname = savesvpv(sv); |
3511154c | 2609 | } |
ac27b0f5 NIS |
2610 | } |
2611 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2612 | STRLEN len; |
2613 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2614 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 | 2615 | SV *tmp; |
8b850bd5 NC |
2616 | |
2617 | ||
2618 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
f747ebd6 | 2619 | PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; |
8b850bd5 NC |
2620 | |
2621 | /* Opening for input is more common than opening for output, so | |
2622 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 | 2623 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
f747ebd6 Z |
2624 | SvUTF8(sv)) |
2625 | : newSVpvs_flags("", SvUTF8(sv)); | |
2626 | (void)hv_stores(GvHV(PL_hintgv), "open>", tmp); | |
2627 | mg_set(tmp); | |
8b850bd5 | 2628 | |
f747ebd6 Z |
2629 | tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len, |
2630 | SvUTF8(sv)); | |
2631 | (void)hv_stores(GvHV(PL_hintgv), "open<", tmp); | |
2632 | mg_set(tmp); | |
ac27b0f5 | 2633 | } |
28f23441 | 2634 | break; |
79072805 | 2635 | case '\020': /* ^P */ |
2fdbfb4d AB |
2636 | if (*remaining == '\0') { /* ^P */ |
2637 | PL_perldb = SvIV(sv); | |
2638 | if (PL_perldb && !PL_DBsingle) | |
2639 | init_debugger(); | |
2640 | break; | |
2641 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2642 | goto do_prematch; | |
2643 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
2644 | goto do_postmatch; | |
2645 | } | |
9b9e0be4 | 2646 | break; |
79072805 | 2647 | case '\024': /* ^T */ |
88e89b8a | 2648 | #ifdef BIG_TIME |
6b88bc9c | 2649 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2650 | #else |
38ab35f8 | 2651 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2652 | #endif |
79072805 | 2653 | break; |
e07ea26a NC |
2654 | case '\025': /* ^UTF8CACHE */ |
2655 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2656 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2657 | } | |
2658 | break; | |
fde18df1 | 2659 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2660 | if (*(mg->mg_ptr+1) == '\0') { |
2661 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2662 | i = SvIV(sv); |
ac27b0f5 | 2663 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2664 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2665 | } |
599cee73 | 2666 | } |
0a378802 | 2667 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2668 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
7e4f0450 FC |
2669 | if (!SvPOK(sv)) { |
2670 | PL_compiling.cop_warnings = pWARN_STD; | |
d775746e GS |
2671 | break; |
2672 | } | |
f4fc7782 | 2673 | { |
b5477537 | 2674 | STRLEN len, i; |
d3a7d8c7 | 2675 | int accumulate = 0 ; |
f4fc7782 | 2676 | int any_fatals = 0 ; |
b83604b4 | 2677 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2678 | for (i = 0 ; i < len ; ++i) { |
2679 | accumulate |= ptr[i] ; | |
2680 | any_fatals |= (ptr[i] & 0xAA) ; | |
2681 | } | |
4243c432 NC |
2682 | if (!accumulate) { |
2683 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2684 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2685 | PL_compiling.cop_warnings = pWARN_NONE; | |
2686 | } | |
72dc9ed5 | 2687 | /* Yuck. I can't see how to abstract this: */ |
2f3f0b56 KW |
2688 | else if (isWARN_on( |
2689 | ((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2690 | WARN_ALL) | |
2691 | && !any_fatals) | |
2692 | { | |
4243c432 NC |
2693 | if (!specialWARN(PL_compiling.cop_warnings)) |
2694 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2695 | PL_compiling.cop_warnings = pWARN_ALL; |
2696 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2697 | } |
d3a7d8c7 | 2698 | else { |
72dc9ed5 NC |
2699 | STRLEN len; |
2700 | const char *const p = SvPV_const(sv, len); | |
2701 | ||
2702 | PL_compiling.cop_warnings | |
8ee4cf24 | 2703 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2704 | p, len); |
2705 | ||
d3a7d8c7 GS |
2706 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2707 | PL_dowarn |= G_WARN_ONCE ; | |
2708 | } | |
f4fc7782 | 2709 | |
d3a7d8c7 | 2710 | } |
4438c4b7 | 2711 | } |
971a9dd3 | 2712 | } |
79072805 LW |
2713 | break; |
2714 | case '.': | |
3280af22 NIS |
2715 | if (PL_localizing) { |
2716 | if (PL_localizing == 1) | |
7766f137 | 2717 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2718 | } |
3280af22 | 2719 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2720 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2721 | break; |
2722 | case '^': | |
acbe1b9d FC |
2723 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2724 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2725 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2726 | break; |
2727 | case '~': | |
acbe1b9d FC |
2728 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2729 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2730 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2731 | break; |
2732 | case '=': | |
acbe1b9d | 2733 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2734 | break; |
2735 | case '-': | |
acbe1b9d FC |
2736 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
2737 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
099be4f1 | 2738 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 LW |
2739 | break; |
2740 | case '%': | |
acbe1b9d | 2741 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2742 | break; |
2743 | case '|': | |
4b65379b | 2744 | { |
099be4f1 | 2745 | IO * const io = GvIO(PL_defoutgv); |
720f287d AB |
2746 | if(!io) |
2747 | break; | |
38ab35f8 | 2748 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2749 | IoFLAGS(io) &= ~IOf_FLUSH; |
2750 | else { | |
2751 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2752 | PerlIO *ofp = IoOFP(io); | |
2753 | if (ofp) | |
2754 | (void)PerlIO_flush(ofp); | |
2755 | IoFLAGS(io) |= IOf_FLUSH; | |
2756 | } | |
2757 | } | |
79072805 LW |
2758 | } |
2759 | break; | |
79072805 | 2760 | case '/': |
3280af22 | 2761 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2762 | PL_rs = newSVsv(sv); |
79072805 LW |
2763 | break; |
2764 | case '\\': | |
ef8d46e8 | 2765 | SvREFCNT_dec(PL_ors_sv); |
6bc2995b | 2766 | if (SvOK(sv)) { |
7889fe52 | 2767 | PL_ors_sv = newSVsv(sv); |
009c130f | 2768 | } |
e3c19b7b | 2769 | else { |
a0714e2c | 2770 | PL_ors_sv = NULL; |
e3c19b7b | 2771 | } |
79072805 | 2772 | break; |
7d69d4a6 FC |
2773 | case '[': |
2774 | if (SvIV(sv) != 0) | |
2775 | Perl_croak(aTHX_ "Assigning non-zero to $[ is no longer possible"); | |
2776 | break; | |
79072805 | 2777 | case '?': |
ff0cee69 | 2778 | #ifdef COMPLEX_STATUS |
6b88bc9c | 2779 | if (PL_localizing == 2) { |
41cb7b2b | 2780 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
2781 | PL_statusvalue = LvTARGOFF(sv); |
2782 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2783 | } |
2784 | else | |
2785 | #endif | |
2786 | #ifdef VMSISH_STATUS | |
2787 | if (VMSISH_STATUS) | |
fb38d079 | 2788 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2789 | else |
2790 | #endif | |
38ab35f8 | 2791 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2792 | break; |
2793 | case '!': | |
93189314 JH |
2794 | { |
2795 | #ifdef VMS | |
2796 | # define PERL_VMS_BANG vaxc$errno | |
2797 | #else | |
2798 | # define PERL_VMS_BANG 0 | |
2799 | #endif | |
91487cfc | 2800 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2801 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2802 | } | |
79072805 LW |
2803 | break; |
2804 | case '<': | |
985213f2 | 2805 | { |
dfff4baf | 2806 | const Uid_t new_uid = SvUID(sv); |
985213f2 | 2807 | PL_delaymagic_uid = new_uid; |
3280af22 NIS |
2808 | if (PL_delaymagic) { |
2809 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2810 | break; /* don't do magic till later */ |
2811 | } | |
2812 | #ifdef HAS_SETRUID | |
dfff4baf | 2813 | (void)setruid(new_uid); |
79072805 LW |
2814 | #else |
2815 | #ifdef HAS_SETREUID | |
dfff4baf | 2816 | (void)setreuid(new_uid, (Uid_t)-1); |
748a9306 | 2817 | #else |
85e6fe83 | 2818 | #ifdef HAS_SETRESUID |
dfff4baf | 2819 | (void)setresuid(new_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2820 | #else |
985213f2 | 2821 | if (new_uid == PerlProc_geteuid()) { /* special case $< = $> */ |
75870ed3 | 2822 | #ifdef PERL_DARWIN |
2823 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
985213f2 | 2824 | if (new_uid != 0 && PerlProc_getuid() == 0) |
75870ed3 | 2825 | (void)PerlProc_setuid(0); |
2826 | #endif | |
985213f2 | 2827 | (void)PerlProc_setuid(new_uid); |
75870ed3 | 2828 | } else { |
cea2e8a9 | 2829 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2830 | } |
79072805 LW |
2831 | #endif |
2832 | #endif | |
85e6fe83 | 2833 | #endif |
79072805 | 2834 | break; |
985213f2 | 2835 | } |
79072805 | 2836 | case '>': |
985213f2 | 2837 | { |
dfff4baf | 2838 | const Uid_t new_euid = SvUID(sv); |
985213f2 | 2839 | PL_delaymagic_euid = new_euid; |
3280af22 NIS |
2840 | if (PL_delaymagic) { |
2841 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2842 | break; /* don't do magic till later */ |
2843 | } | |
2844 | #ifdef HAS_SETEUID | |
dfff4baf | 2845 | (void)seteuid(new_euid); |
79072805 LW |
2846 | #else |
2847 | #ifdef HAS_SETREUID | |
dfff4baf | 2848 | (void)setreuid((Uid_t)-1, new_euid); |
85e6fe83 LW |
2849 | #else |
2850 | #ifdef HAS_SETRESUID | |
dfff4baf | 2851 | (void)setresuid((Uid_t)-1, new_euid, (Uid_t)-1); |
79072805 | 2852 | #else |
985213f2 | 2853 | if (new_euid == PerlProc_getuid()) /* special case $> = $< */ |
382669a9 | 2854 | PerlProc_setuid(new_euid); |
a0d0e21e | 2855 | else { |
cea2e8a9 | 2856 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2857 | } |
79072805 LW |
2858 | #endif |
2859 | #endif | |
85e6fe83 | 2860 | #endif |
79072805 | 2861 | break; |
985213f2 | 2862 | } |
79072805 | 2863 | case '(': |
985213f2 | 2864 | { |
dfff4baf | 2865 | const Gid_t new_gid = SvGID(sv); |
985213f2 | 2866 | PL_delaymagic_gid = new_gid; |
3280af22 NIS |
2867 | if (PL_delaymagic) { |
2868 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2869 | break; /* don't do magic till later */ |
2870 | } | |
2871 | #ifdef HAS_SETRGID | |
dfff4baf | 2872 | (void)setrgid(new_gid); |
79072805 LW |
2873 | #else |
2874 | #ifdef HAS_SETREGID | |
dfff4baf | 2875 | (void)setregid(new_gid, (Gid_t)-1); |
85e6fe83 LW |
2876 | #else |
2877 | #ifdef HAS_SETRESGID | |
dfff4baf | 2878 | (void)setresgid(new_gid, (Gid_t)-1, (Gid_t) -1); |
79072805 | 2879 | #else |
985213f2 AB |
2880 | if (new_gid == PerlProc_getegid()) /* special case $( = $) */ |
2881 | (void)PerlProc_setgid(new_gid); | |
748a9306 | 2882 | else { |
cea2e8a9 | 2883 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2884 | } |
79072805 LW |
2885 | #endif |
2886 | #endif | |
85e6fe83 | 2887 | #endif |
79072805 | 2888 | break; |
985213f2 | 2889 | } |
79072805 | 2890 | case ')': |
985213f2 | 2891 | { |
dfff4baf | 2892 | Gid_t new_egid; |
5cd24f17 | 2893 | #ifdef HAS_SETGROUPS |
2894 | { | |
b83604b4 | 2895 | const char *p = SvPV_const(sv, len); |
757f63d8 | 2896 | Groups_t *gary = NULL; |
fb4089e0 | 2897 | #ifdef _SC_NGROUPS_MAX |
2898 | int maxgrp = sysconf(_SC_NGROUPS_MAX); | |
2899 | ||
2900 | if (maxgrp < 0) | |
2901 | maxgrp = NGROUPS; | |
2902 | #else | |
2903 | int maxgrp = NGROUPS; | |
2904 | #endif | |
757f63d8 SP |
2905 | |
2906 | while (isSPACE(*p)) | |
2907 | ++p; | |
dfff4baf | 2908 | new_egid = (Gid_t)Atol(p); |
fb4089e0 | 2909 | for (i = 0; i < maxgrp; ++i) { |
757f63d8 SP |
2910 | while (*p && !isSPACE(*p)) |
2911 | ++p; | |
2912 | while (isSPACE(*p)) | |
2913 | ++p; | |
2914 | if (!*p) | |
2915 | break; | |
2916 | if(!gary) | |
2917 | Newx(gary, i + 1, Groups_t); | |
2918 | else | |
2919 | Renew(gary, i + 1, Groups_t); | |
dfff4baf | 2920 | gary[i] = (Groups_t)Atol(p); |
757f63d8 SP |
2921 | } |
2922 | if (i) | |
2923 | (void)setgroups(i, gary); | |
f5a63d97 | 2924 | Safefree(gary); |
5cd24f17 | 2925 | } |
2926 | #else /* HAS_SETGROUPS */ | |
dfff4baf | 2927 | new_egid = SvGID(sv); |
5cd24f17 | 2928 | #endif /* HAS_SETGROUPS */ |
985213f2 | 2929 | PL_delaymagic_egid = new_egid; |
3280af22 NIS |
2930 | if (PL_delaymagic) { |
2931 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2932 | break; /* don't do magic till later */ |
2933 | } | |
2934 | #ifdef HAS_SETEGID | |
dfff4baf | 2935 | (void)setegid(new_egid); |
79072805 LW |
2936 | #else |
2937 | #ifdef HAS_SETREGID | |
dfff4baf | 2938 | (void)setregid((Gid_t)-1, new_egid); |
85e6fe83 LW |
2939 | #else |
2940 | #ifdef HAS_SETRESGID | |
dfff4baf | 2941 | (void)setresgid((Gid_t)-1, new_egid, (Gid_t)-1); |
79072805 | 2942 | #else |
985213f2 AB |
2943 | if (new_egid == PerlProc_getgid()) /* special case $) = $( */ |
2944 | (void)PerlProc_setgid(new_egid); | |
748a9306 | 2945 | else { |
cea2e8a9 | 2946 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2947 | } |
79072805 LW |
2948 | #endif |
2949 | #endif | |
85e6fe83 | 2950 | #endif |
79072805 | 2951 | break; |
985213f2 | 2952 | } |
79072805 | 2953 | case ':': |
2d8e6c8d | 2954 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2955 | break; |
9cdac2a2 FC |
2956 | case '$': /* $$ */ |
2957 | /* Store the pid in mg->mg_obj so we can tell when a fork has | |
2958 | occurred. mg->mg_obj points to *$ by default, so clear it. */ | |
2959 | if (isGV(mg->mg_obj)) { | |
2960 | if (mg->mg_flags & MGf_REFCOUNTED) /* probably never true */ | |
2961 | SvREFCNT_dec(mg->mg_obj); | |
2962 | mg->mg_flags |= MGf_REFCOUNTED; | |
2963 | mg->mg_obj = newSViv((IV)PerlProc_getpid()); | |
2964 | } | |
2965 | else sv_setiv(mg->mg_obj, (IV)PerlProc_getpid()); | |
2966 | break; | |
79072805 | 2967 | case '0': |
e2975953 | 2968 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2969 | #ifdef HAS_SETPROCTITLE |
2970 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2971 | * show a string from the process struct and provide | |
2972 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2973 | if (PL_origalen != 1) { |
b83604b4 | 2974 | s = SvPV_const(sv, len); |
98b76f99 | 2975 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2976 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2977 | * but not the "(perl) suffix from the ps(1) |
2978 | * output, because that's what ps(1) shows if the | |
2979 | * argv[] is modified. */ | |
6f2ad931 | 2980 | setproctitle("-%s", s); |
9aad2c0e | 2981 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2982 | /* This doesn't really work if you assume that |
2983 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2984 | * because in ps(1) output the result will be like | |
2985 | * sprintf("perl: %s (perl)", s) | |
2986 | * I guess this is a security feature: | |
2987 | * one (a user process) cannot get rid of the original name. | |
2988 | * --jhi */ | |
2989 | setproctitle("%s", s); | |
2990 | # endif | |
2991 | } | |
9d3968b2 | 2992 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2993 | if (PL_origalen != 1) { |
17aa7f3d | 2994 | union pstun un; |
b83604b4 | 2995 | s = SvPV_const(sv, len); |
6867be6d | 2996 | un.pst_command = (char *)s; |
17aa7f3d JH |
2997 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2998 | } | |
9d3968b2 | 2999 | #else |
2d2af554 GA |
3000 | if (PL_origalen > 1) { |
3001 | /* PL_origalen is set in perl_parse(). */ | |
3002 | s = SvPV_force(sv,len); | |
3003 | if (len >= (STRLEN)PL_origalen-1) { | |
3004 | /* Longer than original, will be truncated. We assume that | |
3005 | * PL_origalen bytes are available. */ | |
3006 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
3007 | } | |
3008 | else { | |
3009 | /* Shorter than original, will be padded. */ | |
235ac35d | 3010 | #ifdef PERL_DARWIN |
60777a0d JH |
3011 | /* Special case for Mac OS X: see [perl #38868] */ |
3012 | const int pad = 0; | |
235ac35d | 3013 | #else |
8a89a4f1 MB |
3014 | /* Is the space counterintuitive? Yes. |
3015 | * (You were expecting \0?) | |
3016 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
3017 | * --jhi */ | |
60777a0d | 3018 | const int pad = ' '; |
235ac35d | 3019 | #endif |
60777a0d JH |
3020 | Copy(s, PL_origargv[0], len, char); |
3021 | PL_origargv[0][len] = 0; | |
3022 | memset(PL_origargv[0] + len + 1, | |
3023 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
3024 | } |
3025 | PL_origargv[0][PL_origalen-1] = 0; | |
3026 | for (i = 1; i < PL_origargc; i++) | |
3027 | PL_origargv[i] = 0; | |
7636ea95 AB |
3028 | #ifdef HAS_PRCTL_SET_NAME |
3029 | /* Set the legacy process name in addition to the POSIX name on Linux */ | |
3030 | if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) { | |
3031 | /* diag_listed_as: SKIPME */ | |
3032 | Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno)); | |
3033 | } | |
3034 | #endif | |
79072805 | 3035 | } |
9d3968b2 | 3036 | #endif |
e2975953 | 3037 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 LW |
3038 | break; |
3039 | } | |
3040 | return 0; | |
3041 | } | |
3042 | ||
3043 | I32 | |
84c7b88c BF |
3044 | Perl_whichsig_sv(pTHX_ SV *sigsv) |
3045 | { | |
3046 | const char *sigpv; | |
3047 | STRLEN siglen; | |
3048 | PERL_ARGS_ASSERT_WHICHSIG_SV; | |
3049 | PERL_UNUSED_CONTEXT; | |
3050 | sigpv = SvPV_const(sigsv, siglen); | |
3051 | return whichsig_pvn(sigpv, siglen); | |
3052 | } | |
3053 | ||
3054 | I32 | |
3055 | Perl_whichsig_pv(pTHX_ const char *sig) | |
3056 | { | |
3057 | PERL_ARGS_ASSERT_WHICHSIG_PV; | |
3058 | PERL_UNUSED_CONTEXT; | |
3059 | return whichsig_pvn(sig, strlen(sig)); | |
3060 | } | |
3061 | ||
3062 | I32 | |
3063 | Perl_whichsig_pvn(pTHX_ const char *sig, STRLEN len) | |
79072805 | 3064 | { |
eb578fdb | 3065 | char* const* sigv; |
7918f24d | 3066 | |
84c7b88c | 3067 | PERL_ARGS_ASSERT_WHICHSIG_PVN; |
96a5add6 | 3068 | PERL_UNUSED_CONTEXT; |
79072805 | 3069 | |
aadb217d | 3070 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
84c7b88c | 3071 | if (strlen(*sigv) == len && memEQ(sig,*sigv, len)) |
aadb217d | 3072 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 | 3073 | #ifdef SIGCLD |
84c7b88c | 3074 | if (memEQs(sig, len, "CHLD")) |
79072805 LW |
3075 | return SIGCLD; |
3076 | #endif | |
3077 | #ifdef SIGCHLD | |
84c7b88c | 3078 | if (memEQs(sig, len, "CLD")) |
79072805 LW |
3079 | return SIGCHLD; |
3080 | #endif | |
7f1236c0 | 3081 | return -1; |
79072805 LW |
3082 | } |
3083 | ||
ecfc5424 | 3084 | Signal_t |
1e82f5a6 | 3085 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3086 | Perl_sighandler(int sig, siginfo_t *sip, void *uap) |
1e82f5a6 SH |
3087 | #else |
3088 | Perl_sighandler(int sig) | |
3089 | #endif | |
79072805 | 3090 | { |
1018e26f NIS |
3091 | #ifdef PERL_GET_SIG_CONTEXT |
3092 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 3093 | #else |
cea2e8a9 | 3094 | dTHX; |
71d280e3 | 3095 | #endif |
79072805 | 3096 | dSP; |
a0714e2c SS |
3097 | GV *gv = NULL; |
3098 | SV *sv = NULL; | |
8772537c | 3099 | SV * const tSv = PL_Sv; |
601f1833 | 3100 | CV *cv = NULL; |
533c011a | 3101 | OP *myop = PL_op; |
84902520 | 3102 | U32 flags = 0; |
8772537c | 3103 | XPV * const tXpv = PL_Xpv; |
0c4d3b5e | 3104 | I32 old_ss_ix = PL_savestack_ix; |
100c03aa | 3105 | SV *errsv_save = NULL; |
71d280e3 | 3106 | |
84902520 | 3107 | |
727405f8 | 3108 | if (!PL_psig_ptr[sig]) { |
99ef548b | 3109 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
3110 | PL_sig_name[sig]); |
3111 | exit(sig); | |
3112 | } | |
ff0cee69 | 3113 | |
a0d63a7b DM |
3114 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3115 | /* Max number of items pushed there is 3*n or 4. We cannot fix | |
3116 | infinity, so we fix 4 (in fact 5): */ | |
3117 | if (PL_savestack_ix + 15 <= PL_savestack_max) { | |
3118 | flags |= 1; | |
3119 | PL_savestack_ix += 5; /* Protect save in progress. */ | |
3120 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, NULL); | |
3121 | } | |
84902520 | 3122 | } |
84902520 | 3123 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ea726b52 | 3124 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig]))) |
8772537c AL |
3125 | || SvTYPE(cv) != SVt_PVCV) { |
3126 | HV *st; | |
f2c0649b | 3127 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 3128 | } |
84902520 | 3129 | |
a0d0e21e | 3130 | if (!cv || !CvROOT(cv)) { |
a2a5de95 NC |
3131 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
3132 | PL_sig_name[sig], (gv ? GvENAME(gv) | |
3133 | : ((cv && CvGV(cv)) | |
3134 | ? GvENAME(CvGV(cv)) | |
3135 | : "__ANON__"))); | |
00d579c5 | 3136 | goto cleanup; |
79072805 LW |
3137 | } |
3138 | ||
0c4d3b5e DM |
3139 | sv = PL_psig_name[sig] |
3140 | ? SvREFCNT_inc_NN(PL_psig_name[sig]) | |
3141 | : newSVpv(PL_sig_name[sig],0); | |
72048cfe | 3142 | flags |= 8; |
0c4d3b5e DM |
3143 | SAVEFREESV(sv); |
3144 | ||
a0d63a7b DM |
3145 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3146 | /* make sure our assumption about the size of the SAVEs are correct: | |
3147 | * 3 for SAVEDESTRUCTOR_X, 2 for SAVEFREESV */ | |
3148 | assert(old_ss_ix + 2 + ((flags & 1) ? 3+5 : 0) == PL_savestack_ix); | |
3149 | } | |
e336de0d | 3150 | |
e788e7d3 | 3151 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 3152 | PUSHMARK(SP); |
79072805 | 3153 | PUSHs(sv); |
8aad04aa JH |
3154 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
3155 | { | |
3156 | struct sigaction oact; | |
3157 | ||
3158 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
3159 | if (sip) { |
3160 | HV *sih = newHV(); | |
ad64d0ec | 3161 | SV *rv = newRV_noinc(MUTABLE_SV(sih)); |
8aad04aa JH |
3162 | /* The siginfo fields signo, code, errno, pid, uid, |
3163 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
3164 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
3165 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 3166 | #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 |
3167 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
3168 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
3169 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
3170 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
3171 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
3172 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 3173 | #endif |
8aad04aa | 3174 | EXTEND(SP, 2); |
ad64d0ec | 3175 | PUSHs(rv); |
22f1178f | 3176 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 3177 | } |
b4552a27 | 3178 | |
8aad04aa JH |
3179 | } |
3180 | } | |
3181 | #endif | |
79072805 | 3182 | PUTBACK; |
a0d0e21e | 3183 | |
100c03aa JL |
3184 | errsv_save = newSVsv(ERRSV); |
3185 | ||
ad64d0ec | 3186 | call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL); |
79072805 | 3187 | |
d3acc0f7 | 3188 | POPSTACK; |
eed484f9 DD |
3189 | { |
3190 | SV * const errsv = ERRSV; | |
3191 | if (SvTRUE_NN(errsv)) { | |
3192 | SvREFCNT_dec(errsv_save); | |
c22d665b | 3193 | #ifndef PERL_MICRO |
1b266415 NIS |
3194 | /* Handler "died", for example to get out of a restart-able read(). |
3195 | * Before we re-do that on its behalf re-enable the signal which was | |
3196 | * blocked by the system when we entered. | |
3197 | */ | |
c22d665b | 3198 | #ifdef HAS_SIGPROCMASK |
d488af49 | 3199 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
eed484f9 | 3200 | if (sip || uap) |
c22d665b | 3201 | #endif |
eed484f9 DD |
3202 | { |
3203 | sigset_t set; | |
3204 | sigemptyset(&set); | |
3205 | sigaddset(&set,sig); | |
3206 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
3207 | } | |
c22d665b | 3208 | #else |
eed484f9 DD |
3209 | /* Not clear if this will work */ |
3210 | (void)rsignal(sig, SIG_IGN); | |
3211 | (void)rsignal(sig, PL_csighandlerp); | |
c22d665b LT |
3212 | #endif |
3213 | #endif /* !PERL_MICRO */ | |
eed484f9 DD |
3214 | die_sv(errsv); |
3215 | } | |
3216 | else { | |
3217 | sv_setsv(errsv, errsv_save); | |
3218 | SvREFCNT_dec(errsv_save); | |
3219 | } | |
100c03aa JL |
3220 | } |
3221 | ||
00d579c5 | 3222 | cleanup: |
0c4d3b5e DM |
3223 | /* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */ |
3224 | PL_savestack_ix = old_ss_ix; | |
72048cfe | 3225 | if (flags & 8) |
2357bae7 | 3226 | SvREFCNT_dec_NN(sv); |
533c011a | 3227 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 3228 | |
3280af22 NIS |
3229 | PL_Sv = tSv; /* Restore global temporaries. */ |
3230 | PL_Xpv = tXpv; | |
53bb94e2 | 3231 | return; |
79072805 | 3232 | } |
4e35701f NIS |
3233 | |
3234 | ||
51371543 | 3235 | static void |
8772537c | 3236 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3237 | { |
97aff369 | 3238 | dVAR; |
8772537c AL |
3239 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3240 | SV* const sv = mgs->mgs_sv; | |
150b625d | 3241 | bool bumped; |
51371543 GS |
3242 | |
3243 | if (!sv) | |
3244 | return; | |
3245 | ||
4bac9ae4 CS |
3246 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
3247 | SvTEMP_off(sv); /* if it's still magical, this value isn't temporary */ | |
f8c7b90f | 3248 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3249 | /* While magic was saved (and off) sv_setsv may well have seen |
3250 | this SV as a prime candidate for COW. */ | |
3251 | if (SvIsCOW(sv)) | |
e424a81e | 3252 | sv_force_normal_flags(sv, 0); |
f9701176 | 3253 | #endif |
f9c6fee5 CS |
3254 | if (mgs->mgs_readonly) |
3255 | SvREADONLY_on(sv); | |
3256 | if (mgs->mgs_magical) | |
3257 | SvFLAGS(sv) |= mgs->mgs_magical; | |
51371543 GS |
3258 | else |
3259 | mg_magical(sv); | |
51371543 GS |
3260 | } |
3261 | ||
150b625d | 3262 | bumped = mgs->mgs_bumped; |
51371543 GS |
3263 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
3264 | ||
3265 | /* If we're still on top of the stack, pop us off. (That condition | |
3266 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3267 | * if it's being called via leave_scope.) | |
3268 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3269 | * may leave alloc gunk on the savestack, and some code | |
3270 | * (e.g. sighandler) doesn't expect that... | |
3271 | */ | |
3272 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3273 | { | |
1be36ce0 NC |
3274 | UV popval = SSPOPUV; |
3275 | assert(popval == SAVEt_DESTRUCTOR_X); | |
51371543 | 3276 | PL_savestack_ix -= 2; |
1be36ce0 NC |
3277 | popval = SSPOPUV; |
3278 | assert((popval & SAVE_MASK) == SAVEt_ALLOC); | |
3279 | PL_savestack_ix -= popval >> SAVE_TIGHT_SHIFT; | |
51371543 | 3280 | } |
150b625d DM |
3281 | if (bumped) { |
3282 | if (SvREFCNT(sv) == 1) { | |
3283 | /* We hold the last reference to this SV, which implies that the | |
3284 | SV was deleted as a side effect of the routines we called. | |
3285 | So artificially keep it alive a bit longer. | |
3286 | We avoid turning on the TEMP flag, which can cause the SV's | |
3287 | buffer to get stolen (and maybe other stuff). */ | |
150b625d | 3288 | sv_2mortal(sv); |
4bac9ae4 | 3289 | SvTEMP_off(sv); |
8985fe98 | 3290 | } |
150b625d | 3291 | else |
2357bae7 | 3292 | SvREFCNT_dec_NN(sv); /* undo the inc in S_save_magic() */ |
8985fe98 | 3293 | } |
51371543 GS |
3294 | } |
3295 | ||
0c4d3b5e DM |
3296 | /* clean up the mess created by Perl_sighandler(). |
3297 | * Note that this is only called during an exit in a signal handler; | |
3298 | * a die is trapped by the call_sv() and the SAVEDESTRUCTOR_X manually | |
9a7f166c | 3299 | * skipped over. */ |
0c4d3b5e | 3300 | |
51371543 | 3301 | static void |
8772537c | 3302 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3303 | { |
27da23d5 | 3304 | dVAR; |
0c4d3b5e | 3305 | PERL_UNUSED_ARG(p); |
7918f24d | 3306 | |
0c4d3b5e | 3307 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
51371543 | 3308 | } |
1018e26f | 3309 | |
66610fdd | 3310 | /* |
b3ca2e83 NC |
3311 | =for apidoc magic_sethint |
3312 | ||
3313 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3314 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3315 | anything that would need a deep copy. Maybe we should warn if we find a | |
3316 | reference. | |
b3ca2e83 NC |
3317 | |
3318 | =cut | |
3319 | */ | |
3320 | int | |
3321 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3322 | { | |
3323 | dVAR; | |
ad64d0ec | 3324 | SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr) |
59cd0e26 | 3325 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3326 | |
7918f24d NC |
3327 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3328 | ||
e6e3e454 NC |
3329 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3330 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3331 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3332 | or take other more complex action. */ | |
3333 | ||
5b9c0671 NC |
3334 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3335 | Doing this here saves a lot of doing it manually in perl code (and | |
3336 | forgetting to do it, and consequent subtle errors. */ | |
3337 | PL_hints |= HINT_LOCALIZE_HH; | |
20439bc7 Z |
3338 | CopHINTHASH_set(&PL_compiling, |
3339 | cophh_store_sv(CopHINTHASH_get(&PL_compiling), key, 0, sv, 0)); | |
b3ca2e83 NC |
3340 | return 0; |
3341 | } | |
3342 | ||
3343 | /* | |
f175cff5 | 3344 | =for apidoc magic_clearhint |
b3ca2e83 | 3345 | |
c28fe1ec NC |
3346 | Triggered by a delete from %^H, records the key to |
3347 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3348 | |
3349 | =cut | |
3350 | */ | |
3351 | int | |
3352 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3353 | { | |
3354 | dVAR; | |
7918f24d NC |
3355 | |
3356 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; | |
f5a63d97 AL |
3357 | PERL_UNUSED_ARG(sv); |
3358 | ||
5b9c0671 | 3359 | PL_hints |= HINT_LOCALIZE_HH; |
20439bc7 | 3360 | CopHINTHASH_set(&PL_compiling, |
e3352591 FC |
3361 | mg->mg_len == HEf_SVKEY |
3362 | ? cophh_delete_sv(CopHINTHASH_get(&PL_compiling), | |
3363 | MUTABLE_SV(mg->mg_ptr), 0, 0) | |
3364 | : cophh_delete_pvn(CopHINTHASH_get(&PL_compiling), | |
3365 | mg->mg_ptr, mg->mg_len, 0, 0)); | |
b3ca2e83 NC |
3366 | return 0; |
3367 | } | |
3368 | ||
3369 | /* | |
f747ebd6 Z |
3370 | =for apidoc magic_clearhints |
3371 | ||
3372 | Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>. | |
3373 | ||
3374 | =cut | |
3375 | */ | |
3376 | int | |
3377 | Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg) | |
3378 | { | |
3379 | PERL_ARGS_ASSERT_MAGIC_CLEARHINTS; | |
3380 | PERL_UNUSED_ARG(sv); | |
3381 | PERL_UNUSED_ARG(mg); | |
20439bc7 Z |
3382 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
3383 | CopHINTHASH_set(&PL_compiling, cophh_new_empty()); | |
f747ebd6 Z |
3384 | return 0; |
3385 | } | |
3386 | ||
09fb282d FC |
3387 | int |
3388 | Perl_magic_copycallchecker(pTHX_ SV *sv, MAGIC *mg, SV *nsv, | |
3389 | const char *name, I32 namlen) | |
3390 | { | |
3391 | MAGIC *nmg; | |
3392 | ||
3393 | PERL_ARGS_ASSERT_MAGIC_COPYCALLCHECKER; | |
4f8dbb2d | 3394 | PERL_UNUSED_ARG(sv); |
09fb282d FC |
3395 | PERL_UNUSED_ARG(name); |
3396 | PERL_UNUSED_ARG(namlen); | |
3397 | ||
3398 | sv_magic(nsv, &PL_sv_undef, mg->mg_type, NULL, 0); | |
3399 | nmg = mg_find(nsv, mg->mg_type); | |
3400 | if (nmg->mg_flags & MGf_REFCOUNTED) SvREFCNT_dec(nmg->mg_obj); | |
3401 | nmg->mg_ptr = mg->mg_ptr; | |
3402 | nmg->mg_obj = SvREFCNT_inc_simple(mg->mg_obj); | |
3403 | nmg->mg_flags |= MGf_REFCOUNTED; | |
3404 | return 1; | |
3405 | } | |
3406 | ||
f747ebd6 | 3407 | /* |
66610fdd RGS |
3408 | * Local variables: |
3409 | * c-indentation-style: bsd | |
3410 | * c-basic-offset: 4 | |
14d04a33 | 3411 | * indent-tabs-mode: nil |
66610fdd RGS |
3412 | * End: |
3413 | * | |
14d04a33 | 3414 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3415 | */ |