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 | "Magic" is special data attached to SV structures in order to give them |
21 | "magical" properties. When any Perl code tries to read from, or assign to, | |
22 | an SV marked as magical, it calls the 'get' or 'set' function associated | |
154e47c8 | 23 | with that SV's magic. A get is called prior to reading an SV, in order to |
ddfa107c | 24 | give it a chance to update its internal value (get on $. writes the line |
b53c43bf | 25 | number of the last read filehandle into the SV's IV slot), while |
166f8a29 | 26 | set is called after an SV has been written to, in order to allow it to make |
ddfa107c | 27 | use of its changed value (set on $/ copies the SV's new value to the |
166f8a29 DM |
28 | PL_rs global variable). |
29 | ||
30 | Magic is implemented as a linked list of MAGIC structures attached to the | |
154e47c8 | 31 | SV. Each MAGIC struct holds the type of the magic, a pointer to an array |
166f8a29 | 32 | of functions that implement the get(), set(), length() etc functions, |
154e47c8 | 33 | plus space for some flags and pointers. For example, a tied variable has |
166f8a29 DM |
34 | a MAGIC structure that contains a pointer to the object associated with the |
35 | tie. | |
36 | ||
7fefc6c1 KW |
37 | =cut |
38 | ||
ccfc67b7 JH |
39 | */ |
40 | ||
79072805 | 41 | #include "EXTERN.h" |
864dbfa3 | 42 | #define PERL_IN_MG_C |
79072805 LW |
43 | #include "perl.h" |
44 | ||
5cd24f17 | 45 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
b7953727 JH |
46 | # ifdef I_GRP |
47 | # include <grp.h> | |
48 | # endif | |
188ea221 CS |
49 | #endif |
50 | ||
757f63d8 SP |
51 | #if defined(HAS_SETGROUPS) |
52 | # ifndef NGROUPS | |
53 | # define NGROUPS 32 | |
54 | # endif | |
55 | #endif | |
56 | ||
17aa7f3d JH |
57 | #ifdef __hpux |
58 | # include <sys/pstat.h> | |
59 | #endif | |
60 | ||
7636ea95 AB |
61 | #ifdef HAS_PRCTL_SET_NAME |
62 | # include <sys/prctl.h> | |
63 | #endif | |
64 | ||
8aad04aa | 65 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 66 | Signal_t Perl_csighandler(int sig, siginfo_t *, void *); |
8aad04aa | 67 | #else |
e69880a5 | 68 | Signal_t Perl_csighandler(int sig); |
8aad04aa | 69 | #endif |
e69880a5 | 70 | |
9cffb111 OS |
71 | #ifdef __Lynx__ |
72 | /* Missing protos on LynxOS */ | |
73 | void setruid(uid_t id); | |
74 | void seteuid(uid_t id); | |
75 | void setrgid(uid_t id); | |
76 | void setegid(uid_t id); | |
77 | #endif | |
78 | ||
c07a80fd | 79 | /* |
4bac9ae4 | 80 | * Pre-magic setup and post-magic takedown. |
c07a80fd | 81 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. |
82 | */ | |
83 | ||
84 | struct magic_state { | |
85 | SV* mgs_sv; | |
455ece5e | 86 | I32 mgs_ss_ix; |
f9c6fee5 CS |
87 | U32 mgs_magical; |
88 | bool mgs_readonly; | |
150b625d | 89 | bool mgs_bumped; |
c07a80fd | 90 | }; |
455ece5e | 91 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
92 | |
93 | STATIC void | |
ff44333e | 94 | S_save_magic_flags(pTHX_ I32 mgs_ix, SV *sv, U32 flags) |
c07a80fd | 95 | { |
455ece5e | 96 | MGS* mgs; |
150b625d | 97 | bool bumped = FALSE; |
7918f24d | 98 | |
ff44333e | 99 | PERL_ARGS_ASSERT_SAVE_MAGIC_FLAGS; |
7918f24d | 100 | |
4bac9ae4 CS |
101 | assert(SvMAGICAL(sv)); |
102 | ||
150b625d DM |
103 | /* we shouldn't really be called here with RC==0, but it can sometimes |
104 | * happen via mg_clear() (which also shouldn't be called when RC==0, | |
105 | * but it can happen). Handle this case gracefully(ish) by not RC++ | |
106 | * and thus avoiding the resultant double free */ | |
107 | if (SvREFCNT(sv) > 0) { | |
108 | /* guard against sv getting freed midway through the mg clearing, | |
109 | * by holding a private reference for the duration. */ | |
110 | SvREFCNT_inc_simple_void_NN(sv); | |
111 | bumped = TRUE; | |
112 | } | |
8985fe98 | 113 | |
8772537c | 114 | SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
115 | |
116 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 117 | mgs->mgs_sv = sv; |
f9c6fee5 | 118 | mgs->mgs_magical = SvMAGICAL(sv); |
46959f1c | 119 | mgs->mgs_readonly = SvREADONLY(sv) != 0; |
455ece5e | 120 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
150b625d | 121 | mgs->mgs_bumped = bumped; |
c07a80fd | 122 | |
ff44333e | 123 | SvFLAGS(sv) &= ~flags; |
3805b5fb | 124 | SvREADONLY_off(sv); |
c07a80fd | 125 | } |
126 | ||
ff44333e FC |
127 | #define save_magic(a,b) save_magic_flags(a,b,SVs_GMG|SVs_SMG|SVs_RMG) |
128 | ||
954c1994 GS |
129 | /* |
130 | =for apidoc mg_magical | |
131 | ||
132 | Turns on the magical status of an SV. See C<sv_magic>. | |
133 | ||
134 | =cut | |
135 | */ | |
136 | ||
8990e307 | 137 | void |
ddeaf645 | 138 | Perl_mg_magical(SV *sv) |
8990e307 | 139 | { |
e1ec3a88 | 140 | const MAGIC* mg; |
7918f24d | 141 | PERL_ARGS_ASSERT_MG_MAGICAL; |
f9c6fee5 CS |
142 | |
143 | SvMAGICAL_off(sv); | |
218787bd | 144 | if ((mg = SvMAGIC(sv))) { |
218787bd VP |
145 | do { |
146 | const MGVTBL* const vtbl = mg->mg_virtual; | |
147 | if (vtbl) { | |
148 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) | |
149 | SvGMAGICAL_on(sv); | |
150 | if (vtbl->svt_set) | |
151 | SvSMAGICAL_on(sv); | |
152 | if (vtbl->svt_clear) | |
153 | SvRMAGICAL_on(sv); | |
154 | } | |
155 | } while ((mg = mg->mg_moremagic)); | |
156 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG))) | |
157 | SvRMAGICAL_on(sv); | |
8990e307 LW |
158 | } |
159 | } | |
160 | ||
954c1994 GS |
161 | /* |
162 | =for apidoc mg_get | |
163 | ||
4b1e7f06 | 164 | Do magic before a value is retrieved from the SV. The type of SV must |
72d33970 | 165 | be >= SVt_PVMG. See C<sv_magic>. |
954c1994 GS |
166 | |
167 | =cut | |
168 | */ | |
169 | ||
79072805 | 170 | int |
864dbfa3 | 171 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 172 | { |
35a4481c | 173 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
a9844598 | 174 | bool saved = FALSE; |
f9c6fee5 | 175 | bool have_new = 0; |
ff76feab | 176 | MAGIC *newmg, *head, *cur, *mg; |
6683b158 | 177 | |
7918f24d NC |
178 | PERL_ARGS_ASSERT_MG_GET; |
179 | ||
407287f9 FC |
180 | if (PL_localizing == 1 && sv == DEFSV) return 0; |
181 | ||
ff76feab AMS |
182 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
183 | list of magic. svt_get() may delete the current entry, add new | |
184 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
185 | ||
186 | newmg = cur = head = mg = SvMAGIC(sv); | |
187 | while (mg) { | |
35a4481c | 188 | const MGVTBL * const vtbl = mg->mg_virtual; |
f9c6fee5 | 189 | MAGIC * const nextmg = mg->mg_moremagic; /* it may delete itself */ |
ff76feab | 190 | |
2b260de0 | 191 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
a9844598 CS |
192 | |
193 | /* taint's mg get is so dumb it doesn't need flag saving */ | |
194 | if (!saved && mg->mg_type != PERL_MAGIC_taint) { | |
195 | save_magic(mgs_ix, sv); | |
196 | saved = TRUE; | |
197 | } | |
198 | ||
16c91539 | 199 | vtbl->svt_get(aTHX_ sv, mg); |
b77f7d40 | 200 | |
58f82c5c DM |
201 | /* guard against magic having been deleted - eg FETCH calling |
202 | * untie */ | |
f9c6fee5 CS |
203 | if (!SvMAGIC(sv)) { |
204 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ | |
58f82c5c | 205 | break; |
f9c6fee5 | 206 | } |
b77f7d40 | 207 | |
f9c6fee5 | 208 | /* recalculate flags if this entry was deleted. */ |
ff76feab | 209 | if (mg->mg_flags & MGf_GSKIP) |
f9c6fee5 | 210 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; |
a0d0e21e | 211 | } |
7d1328bb FC |
212 | else if (vtbl == &PL_vtbl_utf8) { |
213 | /* get-magic can reallocate the PV */ | |
214 | magic_setutf8(sv, mg); | |
215 | } | |
ff76feab | 216 | |
f9c6fee5 | 217 | mg = nextmg; |
ff76feab | 218 | |
0723351e | 219 | if (have_new) { |
ff76feab AMS |
220 | /* Have we finished with the new entries we saw? Start again |
221 | where we left off (unless there are more new entries). */ | |
222 | if (mg == head) { | |
0723351e | 223 | have_new = 0; |
ff76feab AMS |
224 | mg = cur; |
225 | head = newmg; | |
226 | } | |
227 | } | |
228 | ||
229 | /* Were any new entries added? */ | |
0723351e NC |
230 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
231 | have_new = 1; | |
ff76feab AMS |
232 | cur = mg; |
233 | mg = newmg; | |
f9c6fee5 | 234 | (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */ |
760ac839 | 235 | } |
79072805 | 236 | } |
463ee0b2 | 237 | |
a9844598 CS |
238 | if (saved) |
239 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); | |
240 | ||
79072805 LW |
241 | return 0; |
242 | } | |
243 | ||
954c1994 GS |
244 | /* |
245 | =for apidoc mg_set | |
246 | ||
247 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
248 | ||
249 | =cut | |
250 | */ | |
251 | ||
79072805 | 252 | int |
864dbfa3 | 253 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 254 | { |
35a4481c | 255 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 256 | MAGIC* mg; |
463ee0b2 LW |
257 | MAGIC* nextmg; |
258 | ||
7918f24d NC |
259 | PERL_ARGS_ASSERT_MG_SET; |
260 | ||
b5ed8c44 FC |
261 | if (PL_localizing == 2 && sv == DEFSV) return 0; |
262 | ||
ff44333e | 263 | save_magic_flags(mgs_ix, sv, SVs_GMG|SVs_SMG); /* leave SVs_RMG on */ |
463ee0b2 LW |
264 | |
265 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 266 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 267 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
268 | if (mg->mg_flags & MGf_GSKIP) { |
269 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
f9c6fee5 | 270 | (SSPTR(mgs_ix, MGS*))->mgs_magical = 0; |
a0d0e21e | 271 | } |
e0a73de4 | 272 | if (PL_localizing == 2 |
b5ed8c44 | 273 | && PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
e7cbf6c6 | 274 | continue; |
2b260de0 | 275 | if (vtbl && vtbl->svt_set) |
16c91539 | 276 | vtbl->svt_set(aTHX_ sv, mg); |
79072805 | 277 | } |
463ee0b2 | 278 | |
8772537c | 279 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
280 | return 0; |
281 | } | |
282 | ||
954c1994 GS |
283 | /* |
284 | =for apidoc mg_length | |
285 | ||
d4e99c76 | 286 | Reports on the SV's length in bytes, calling length magic if available, |
bd8446cf FC |
287 | but does not set the UTF8 flag on the sv. It will fall back to 'get' |
288 | magic if there is no 'length' magic, but with no indication as to | |
289 | whether it called 'get' magic. It assumes the sv is a PVMG or | |
290 | higher. Use sv_len() instead. | |
954c1994 GS |
291 | |
292 | =cut | |
293 | */ | |
294 | ||
79072805 | 295 | U32 |
864dbfa3 | 296 | Perl_mg_length(pTHX_ SV *sv) |
79072805 LW |
297 | { |
298 | MAGIC* mg; | |
463ee0b2 | 299 | STRLEN len; |
463ee0b2 | 300 | |
7918f24d NC |
301 | PERL_ARGS_ASSERT_MG_LENGTH; |
302 | ||
79072805 | 303 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 304 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 305 | if (vtbl && vtbl->svt_len) { |
35a4481c | 306 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 307 | save_magic(mgs_ix, sv); |
a0d0e21e | 308 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 309 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 310 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
311 | return len; |
312 | } | |
313 | } | |
314 | ||
bd8446cf | 315 | (void)SvPV_const(sv, len); |
463ee0b2 | 316 | return len; |
79072805 LW |
317 | } |
318 | ||
8fb26106 | 319 | I32 |
864dbfa3 | 320 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
321 | { |
322 | MAGIC* mg; | |
ac27b0f5 | 323 | |
7918f24d NC |
324 | PERL_ARGS_ASSERT_MG_SIZE; |
325 | ||
93965878 | 326 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 327 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 328 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
329 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
330 | I32 len; | |
455ece5e | 331 | save_magic(mgs_ix, sv); |
93965878 | 332 | /* omit MGf_GSKIP -- not changed here */ |
16c91539 | 333 | len = vtbl->svt_len(aTHX_ sv, mg); |
8772537c | 334 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
335 | return len; |
336 | } | |
337 | } | |
338 | ||
339 | switch(SvTYPE(sv)) { | |
340 | case SVt_PVAV: | |
502c6561 | 341 | return AvFILLp((const AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
342 | case SVt_PVHV: |
343 | /* FIXME */ | |
344 | default: | |
cea2e8a9 | 345 | Perl_croak(aTHX_ "Size magic not implemented"); |
81d52ecd | 346 | |
93965878 | 347 | } |
a25b5927 | 348 | NOT_REACHED; /* NOTREACHED */ |
93965878 NIS |
349 | } |
350 | ||
954c1994 GS |
351 | /* |
352 | =for apidoc mg_clear | |
353 | ||
354 | Clear something magical that the SV represents. See C<sv_magic>. | |
355 | ||
356 | =cut | |
357 | */ | |
358 | ||
79072805 | 359 | int |
864dbfa3 | 360 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 361 | { |
35a4481c | 362 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 363 | MAGIC* mg; |
8ac77ac9 | 364 | MAGIC *nextmg; |
463ee0b2 | 365 | |
7918f24d NC |
366 | PERL_ARGS_ASSERT_MG_CLEAR; |
367 | ||
455ece5e | 368 | save_magic(mgs_ix, sv); |
463ee0b2 | 369 | |
8ac77ac9 | 370 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
35a4481c | 371 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 372 | /* omit GSKIP -- never set here */ |
727405f8 | 373 | |
8ac77ac9 NC |
374 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
375 | ||
2b260de0 | 376 | if (vtbl && vtbl->svt_clear) |
16c91539 | 377 | vtbl->svt_clear(aTHX_ sv, mg); |
79072805 | 378 | } |
463ee0b2 | 379 | |
8772537c | 380 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
381 | return 0; |
382 | } | |
383 | ||
ed624ca8 | 384 | static MAGIC* |
ddeaf645 | 385 | S_mg_findext_flags(const SV *sv, int type, const MGVTBL *vtbl, U32 flags) |
39de7f53 | 386 | { |
39de7f53 FR |
387 | assert(flags <= 1); |
388 | ||
389 | if (sv) { | |
390 | MAGIC *mg; | |
391 | ||
7db6405c FC |
392 | assert(!(SvTYPE(sv) == SVt_PVAV && AvPAD_NAMELIST(sv))); |
393 | ||
39de7f53 FR |
394 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
395 | if (mg->mg_type == type && (!flags || mg->mg_virtual == vtbl)) { | |
396 | return mg; | |
397 | } | |
398 | } | |
399 | } | |
400 | ||
401 | return NULL; | |
402 | } | |
403 | ||
954c1994 GS |
404 | /* |
405 | =for apidoc mg_find | |
406 | ||
407 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
408 | ||
409 | =cut | |
410 | */ | |
411 | ||
93a17b20 | 412 | MAGIC* |
ddeaf645 | 413 | Perl_mg_find(const SV *sv, int type) |
93a17b20 | 414 | { |
ddeaf645 | 415 | return S_mg_findext_flags(sv, type, NULL, 0); |
39de7f53 FR |
416 | } |
417 | ||
418 | /* | |
419 | =for apidoc mg_findext | |
420 | ||
421 | Finds the magic pointer of C<type> with the given C<vtbl> for the C<SV>. See | |
422 | C<sv_magicext>. | |
423 | ||
424 | =cut | |
425 | */ | |
426 | ||
427 | MAGIC* | |
ddeaf645 | 428 | Perl_mg_findext(const SV *sv, int type, const MGVTBL *vtbl) |
39de7f53 | 429 | { |
ddeaf645 | 430 | return S_mg_findext_flags(sv, type, vtbl, 1); |
93a17b20 LW |
431 | } |
432 | ||
96c2a8ff FC |
433 | MAGIC * |
434 | Perl_mg_find_mglob(pTHX_ SV *sv) | |
435 | { | |
436 | PERL_ARGS_ASSERT_MG_FIND_MGLOB; | |
437 | if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y') { | |
438 | /* This sv is only a delegate. //g magic must be attached to | |
439 | its target. */ | |
440 | vivify_defelem(sv); | |
441 | sv = LvTARG(sv); | |
442 | } | |
443 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
ddeaf645 | 444 | return S_mg_findext_flags(sv, PERL_MAGIC_regex_global, 0, 0); |
96c2a8ff FC |
445 | return NULL; |
446 | } | |
447 | ||
954c1994 GS |
448 | /* |
449 | =for apidoc mg_copy | |
450 | ||
451 | Copies the magic from one SV to another. See C<sv_magic>. | |
452 | ||
453 | =cut | |
454 | */ | |
455 | ||
79072805 | 456 | int |
864dbfa3 | 457 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 458 | { |
463ee0b2 | 459 | int count = 0; |
79072805 | 460 | MAGIC* mg; |
7918f24d NC |
461 | |
462 | PERL_ARGS_ASSERT_MG_COPY; | |
463 | ||
463ee0b2 | 464 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 465 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 | 466 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
16c91539 | 467 | count += vtbl->svt_copy(aTHX_ sv, mg, nsv, key, klen); |
68795e93 | 468 | } |
823a54a3 AL |
469 | else { |
470 | const char type = mg->mg_type; | |
1e73acc8 | 471 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
472 | sv_magic(nsv, |
473 | (type == PERL_MAGIC_tied) | |
474 | ? SvTIED_obj(sv, mg) | |
475 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
476 | ? sv | |
477 | : mg->mg_obj, | |
478 | toLOWER(type), key, klen); | |
479 | count++; | |
480 | } | |
79072805 | 481 | } |
79072805 | 482 | } |
463ee0b2 | 483 | return count; |
79072805 LW |
484 | } |
485 | ||
954c1994 | 486 | /* |
0cbee0a4 DM |
487 | =for apidoc mg_localize |
488 | ||
9711599e | 489 | Copy some of the magic from an existing SV to new localized version of that |
154e47c8 FC |
490 | SV. Container magic (eg %ENV, $1, tie) |
491 | gets copied, value magic doesn't (eg | |
9711599e CS |
492 | taint, pos). |
493 | ||
af7df257 | 494 | If setmagic is false then no set magic will be called on the new (empty) SV. |
9711599e CS |
495 | This typically means that assignment will soon follow (e.g. 'local $x = $y'), |
496 | and that will handle the magic. | |
0cbee0a4 DM |
497 | |
498 | =cut | |
499 | */ | |
500 | ||
501 | void | |
af7df257 | 502 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv, bool setmagic) |
0cbee0a4 DM |
503 | { |
504 | MAGIC *mg; | |
7918f24d NC |
505 | |
506 | PERL_ARGS_ASSERT_MG_LOCALIZE; | |
507 | ||
658a9f31 JD |
508 | if (nsv == DEFSV) |
509 | return; | |
510 | ||
0cbee0a4 | 511 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
2b1b43ea | 512 | const MGVTBL* const vtbl = mg->mg_virtual; |
e0a73de4 | 513 | if (PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type)) |
0cbee0a4 | 514 | continue; |
0cbee0a4 | 515 | |
a5063e7c | 516 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
16c91539 | 517 | (void)vtbl->svt_local(aTHX_ nsv, mg); |
a5063e7c | 518 | else |
0cbee0a4 DM |
519 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
520 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 521 | |
0cbee0a4 | 522 | /* container types should remain read-only across localization */ |
9ff3e6d8 | 523 | SvFLAGS(nsv) |= SvREADONLY(sv); |
0cbee0a4 DM |
524 | } |
525 | ||
526 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
527 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
af7df257 | 528 | if (setmagic) { |
9711599e CS |
529 | PL_localizing = 1; |
530 | SvSETMAGIC(nsv); | |
531 | PL_localizing = 0; | |
532 | } | |
0cbee0a4 DM |
533 | } |
534 | } | |
535 | ||
d9088386 Z |
536 | #define mg_free_struct(sv, mg) S_mg_free_struct(aTHX_ sv, mg) |
537 | static void | |
538 | S_mg_free_struct(pTHX_ SV *sv, MAGIC *mg) | |
539 | { | |
540 | const MGVTBL* const vtbl = mg->mg_virtual; | |
541 | if (vtbl && vtbl->svt_free) | |
542 | vtbl->svt_free(aTHX_ sv, mg); | |
543 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { | |
544 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) | |
545 | Safefree(mg->mg_ptr); | |
546 | else if (mg->mg_len == HEf_SVKEY) | |
547 | SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr)); | |
548 | } | |
549 | if (mg->mg_flags & MGf_REFCOUNTED) | |
550 | SvREFCNT_dec(mg->mg_obj); | |
551 | Safefree(mg); | |
552 | } | |
553 | ||
0cbee0a4 | 554 | /* |
954c1994 GS |
555 | =for apidoc mg_free |
556 | ||
557 | Free any magic storage used by the SV. See C<sv_magic>. | |
558 | ||
559 | =cut | |
560 | */ | |
561 | ||
79072805 | 562 | int |
864dbfa3 | 563 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
564 | { |
565 | MAGIC* mg; | |
566 | MAGIC* moremagic; | |
7918f24d NC |
567 | |
568 | PERL_ARGS_ASSERT_MG_FREE; | |
569 | ||
79072805 | 570 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
79072805 | 571 | moremagic = mg->mg_moremagic; |
d9088386 | 572 | mg_free_struct(sv, mg); |
c826f41b | 573 | SvMAGIC_set(sv, moremagic); |
79072805 | 574 | } |
b162af07 | 575 | SvMAGIC_set(sv, NULL); |
68f8932e | 576 | SvMAGICAL_off(sv); |
79072805 LW |
577 | return 0; |
578 | } | |
579 | ||
d9088386 Z |
580 | /* |
581 | =for apidoc Am|void|mg_free_type|SV *sv|int how | |
582 | ||
583 | Remove any magic of type I<how> from the SV I<sv>. See L</sv_magic>. | |
584 | ||
585 | =cut | |
586 | */ | |
587 | ||
588 | void | |
589 | Perl_mg_free_type(pTHX_ SV *sv, int how) | |
590 | { | |
591 | MAGIC *mg, *prevmg, *moremg; | |
592 | PERL_ARGS_ASSERT_MG_FREE_TYPE; | |
593 | for (prevmg = NULL, mg = SvMAGIC(sv); mg; prevmg = mg, mg = moremg) { | |
594 | MAGIC *newhead; | |
595 | moremg = mg->mg_moremagic; | |
596 | if (mg->mg_type == how) { | |
597 | /* temporarily move to the head of the magic chain, in case | |
598 | custom free code relies on this historical aspect of mg_free */ | |
599 | if (prevmg) { | |
600 | prevmg->mg_moremagic = moremg; | |
601 | mg->mg_moremagic = SvMAGIC(sv); | |
602 | SvMAGIC_set(sv, mg); | |
603 | } | |
604 | newhead = mg->mg_moremagic; | |
605 | mg_free_struct(sv, mg); | |
606 | SvMAGIC_set(sv, newhead); | |
607 | mg = prevmg; | |
608 | } | |
609 | } | |
610 | mg_magical(sv); | |
611 | } | |
612 | ||
79072805 | 613 | #include <signal.h> |
79072805 | 614 | |
942e002e | 615 | U32 |
864dbfa3 | 616 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 617 | { |
8772537c | 618 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 619 | |
7918f24d NC |
620 | PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT; |
621 | ||
0bd48802 | 622 | if (PL_curpm) { |
eb578fdb | 623 | const REGEXP * const rx = PM_GETRE(PL_curpm); |
0bd48802 | 624 | if (rx) { |
a678b0e4 YO |
625 | if (mg->mg_obj) { /* @+ */ |
626 | /* return the number possible */ | |
07bc277f | 627 | return RX_NPARENS(rx); |
a678b0e4 | 628 | } else { /* @- */ |
07bc277f | 629 | I32 paren = RX_LASTPAREN(rx); |
a678b0e4 YO |
630 | |
631 | /* return the last filled */ | |
f46c4081 | 632 | while ( paren >= 0 |
07bc277f NC |
633 | && (RX_OFFS(rx)[paren].start == -1 |
634 | || RX_OFFS(rx)[paren].end == -1) ) | |
f46c4081 | 635 | paren--; |
a678b0e4 YO |
636 | return (U32)paren; |
637 | } | |
0bd48802 | 638 | } |
8f580fb8 | 639 | } |
ac27b0f5 | 640 | |
942e002e | 641 | return (U32)-1; |
6cef1e77 IZ |
642 | } |
643 | ||
6502e081 DM |
644 | /* @-, @+ */ |
645 | ||
6cef1e77 | 646 | int |
864dbfa3 | 647 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 648 | { |
7918f24d NC |
649 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET; |
650 | ||
0bd48802 | 651 | if (PL_curpm) { |
eb578fdb | 652 | const REGEXP * const rx = PM_GETRE(PL_curpm); |
0bd48802 | 653 | if (rx) { |
eb578fdb | 654 | const I32 paren = mg->mg_len; |
a10eae29 FC |
655 | SSize_t s; |
656 | SSize_t t; | |
0bd48802 AL |
657 | if (paren < 0) |
658 | return 0; | |
07bc277f NC |
659 | if (paren <= (I32)RX_NPARENS(rx) && |
660 | (s = RX_OFFS(rx)[paren].start) != -1 && | |
661 | (t = RX_OFFS(rx)[paren].end) != -1) | |
0bd48802 | 662 | { |
a10eae29 | 663 | SSize_t i; |
0bd48802 AL |
664 | if (mg->mg_obj) /* @+ */ |
665 | i = t; | |
666 | else /* @- */ | |
667 | i = s; | |
668 | ||
a10eae29 | 669 | if (RX_MATCH_UTF8(rx)) { |
07bc277f | 670 | const char * const b = RX_SUBBEG(rx); |
0bd48802 | 671 | if (b) |
6502e081 DM |
672 | i = RX_SUBCOFFSET(rx) + |
673 | utf8_length((U8*)b, | |
674 | (U8*)(b-RX_SUBOFFSET(rx)+i)); | |
0bd48802 | 675 | } |
727405f8 | 676 | |
a10eae29 | 677 | sv_setuv(sv, i); |
232af1f8 | 678 | return 0; |
1aa99e6b | 679 | } |
0bd48802 | 680 | } |
6cef1e77 | 681 | } |
232af1f8 | 682 | sv_setsv(sv, NULL); |
6cef1e77 IZ |
683 | return 0; |
684 | } | |
685 | ||
6502e081 DM |
686 | /* @-, @+ */ |
687 | ||
e4b89193 | 688 | int |
a29d06ed MG |
689 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
690 | { | |
7918f24d | 691 | PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET; |
dc3bf405 | 692 | PERL_UNUSED_CONTEXT; |
d4c19fe8 AL |
693 | PERL_UNUSED_ARG(sv); |
694 | PERL_UNUSED_ARG(mg); | |
cb077ed2 | 695 | Perl_croak_no_modify(); |
0dbb1585 | 696 | NORETURN_FUNCTION_END; |
a29d06ed MG |
697 | } |
698 | ||
ad3296c6 | 699 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
700 | if (SvPOK(sv)) { \ |
701 | STRLEN len = SvCUR(sv); \ | |
702 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
703 | while (len > 0 && isSPACE(p[len-1])) \ |
704 | --len; \ | |
705 | SvCUR_set(sv, len); \ | |
706 | p[len] = '\0'; \ | |
707 | } \ | |
ad3296c6 SH |
708 | } STMT_END |
709 | ||
8b850bd5 NC |
710 | void |
711 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
712 | { | |
7918f24d NC |
713 | PERL_ARGS_ASSERT_EMULATE_COP_IO; |
714 | ||
8b850bd5 NC |
715 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) |
716 | sv_setsv(sv, &PL_sv_undef); | |
717 | else { | |
718 | sv_setpvs(sv, ""); | |
719 | SvUTF8_off(sv); | |
720 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
20439bc7 | 721 | SV *const value = cop_hints_fetch_pvs(c, "open<", 0); |
8b850bd5 NC |
722 | assert(value); |
723 | sv_catsv(sv, value); | |
724 | } | |
725 | sv_catpvs(sv, "\0"); | |
726 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
20439bc7 | 727 | SV *const value = cop_hints_fetch_pvs(c, "open>", 0); |
8b850bd5 NC |
728 | assert(value); |
729 | sv_catsv(sv, value); | |
730 | } | |
731 | } | |
732 | } | |
733 | ||
d9fe7d23 KW |
734 | STATIC void |
735 | S_fixup_errno_string(pTHX_ SV* sv) | |
736 | { | |
737 | /* Do what is necessary to fixup the non-empty string in 'sv' for return to | |
738 | * Perl space. */ | |
739 | ||
740 | PERL_ARGS_ASSERT_FIXUP_ERRNO_STRING; | |
741 | ||
742 | assert(SvOK(sv)); | |
b35e4f8b KW |
743 | |
744 | if(strEQ(SvPVX(sv), "")) { | |
745 | sv_catpv(sv, UNKNOWN_ERRNO_MSG); | |
746 | } | |
747 | else { | |
d9fe7d23 | 748 | |
d3c0b317 KW |
749 | /* In some locales the error string may come back as UTF-8, in which |
750 | * case we should turn on that flag. This didn't use to happen, and to | |
5320b60d KW |
751 | * avoid as many possible backward compatibility issues as possible, we |
752 | * don't turn on the flag unless we have to. So the flag stays off for | |
753 | * an entirely ASCII string. We assume that if the string looks like | |
754 | * UTF-8, it really is UTF-8: "text in any other encoding that uses | |
755 | * bytes with the high bit set is extremely unlikely to pass a UTF-8 | |
756 | * validity test" (http://en.wikipedia.org/wiki/Charset_detection). | |
757 | * There is a potential that we will get it wrong however, especially | |
758 | * on short error message text. (If it turns out to be necessary, we | |
759 | * could also keep track if the current LC_MESSAGES locale is UTF-8) */ | |
d3c0b317 KW |
760 | if (! IN_BYTES /* respect 'use bytes' */ |
761 | && ! is_ascii_string((U8*) SvPVX_const(sv), SvCUR(sv)) | |
762 | && is_utf8_string((U8*) SvPVX_const(sv), SvCUR(sv))) | |
763 | { | |
764 | SvUTF8_on(sv); | |
765 | } | |
b35e4f8b | 766 | } |
d9fe7d23 KW |
767 | } |
768 | ||
25bbd826 CB |
769 | #ifdef VMS |
770 | #include <descrip.h> | |
771 | #include <starlet.h> | |
772 | #endif | |
773 | ||
79072805 | 774 | int |
864dbfa3 | 775 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 776 | { |
eb578fdb KW |
777 | I32 paren; |
778 | const char *s = NULL; | |
779 | REGEXP *rx; | |
823a54a3 | 780 | const char * const remaining = mg->mg_ptr + 1; |
e91d8259 | 781 | char nextchar; |
79072805 | 782 | |
7918f24d NC |
783 | PERL_ARGS_ASSERT_MAGIC_GET; |
784 | ||
e91d8259 | 785 | if (!mg->mg_ptr) { |
e91d8259 | 786 | paren = mg->mg_len; |
e91d8259 | 787 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
a6d0b1b5 | 788 | do_numbuf_fetch: |
e91d8259 NC |
789 | CALLREG_NUMBUF_FETCH(rx,paren,sv); |
790 | } else { | |
791 | sv_setsv(sv,&PL_sv_undef); | |
792 | } | |
793 | return 0; | |
794 | } | |
795 | ||
796 | nextchar = *remaining; | |
79072805 | 797 | switch (*mg->mg_ptr) { |
748a9306 | 798 | case '\001': /* ^A */ |
f2da823f FC |
799 | if (SvOK(PL_bodytarget)) sv_copypv(sv, PL_bodytarget); |
800 | else sv_setsv(sv, &PL_sv_undef); | |
125b9982 NT |
801 | if (SvTAINTED(PL_bodytarget)) |
802 | SvTAINTED_on(sv); | |
748a9306 | 803 | break; |
e5218da5 | 804 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 805 | if (nextchar == '\0') { |
e5218da5 GA |
806 | sv_setiv(sv, (IV)PL_minus_c); |
807 | } | |
823a54a3 | 808 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
809 | sv_setiv(sv, (IV)STATUS_NATIVE); |
810 | } | |
49460fe6 NIS |
811 | break; |
812 | ||
79072805 | 813 | case '\004': /* ^D */ |
aea4f609 | 814 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 815 | break; |
28f23441 | 816 | case '\005': /* ^E */ |
6c6eab55 KW |
817 | if (nextchar != '\0') { |
818 | if (strEQ(remaining, "NCODING")) | |
819 | sv_setsv(sv, PL_encoding); | |
4f4ff3a7 | 820 | break; |
6c6eab55 | 821 | } |
4f4ff3a7 KW |
822 | |
823 | #if defined(VMS) || defined(OS2) || defined(WIN32) | |
824 | # if defined(VMS) | |
2a99ff86 KW |
825 | { |
826 | char msg[255]; | |
827 | $DESCRIPTOR(msgdsc,msg); | |
828 | sv_setnv(sv,(NV) vaxc$errno); | |
829 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
830 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
831 | else | |
832 | sv_setpvs(sv,""); | |
833 | } | |
4b645107 | 834 | #elif defined(OS2) |
2a99ff86 KW |
835 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
836 | sv_setnv(sv, (NV)errno); | |
2c6ee1a7 | 837 | sv_setpv(sv, errno ? my_strerror(errno) : ""); |
2a99ff86 KW |
838 | } else { |
839 | if (errno != errno_isOS2) { | |
840 | const int tmp = _syserrno(); | |
841 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ | |
842 | Perl_rc = tmp; | |
843 | } | |
844 | sv_setnv(sv, (NV)Perl_rc); | |
845 | sv_setpv(sv, os2error(Perl_rc)); | |
846 | } | |
1534c6f5 | 847 | if (SvOK(sv) && strNE(SvPVX(sv), "")) { |
99461a73 KW |
848 | fixup_errno_string(sv); |
849 | } | |
4f4ff3a7 | 850 | # elif defined(WIN32) |
2a99ff86 KW |
851 | { |
852 | const DWORD dwErr = GetLastError(); | |
853 | sv_setnv(sv, (NV)dwErr); | |
854 | if (dwErr) { | |
855 | PerlProc_GetOSError(sv, dwErr); | |
2efab60d | 856 | fixup_errno_string(sv); |
2a99ff86 KW |
857 | } |
858 | else | |
859 | sv_setpvs(sv, ""); | |
860 | SetLastError(dwErr); | |
861 | } | |
4f4ff3a7 KW |
862 | # else |
863 | # error Missing code for platform | |
864 | # endif | |
2a99ff86 KW |
865 | SvRTRIM(sv); |
866 | SvNOK_on(sv); /* what a wonderful hack! */ | |
867 | break; | |
4f4ff3a7 KW |
868 | #endif /* End of platforms with special handling for $^E; others just fall |
869 | through to $! */ | |
46f3e16c KW |
870 | |
871 | case '!': | |
872 | { | |
5f1b979d | 873 | dSAVE_ERRNO; |
46f3e16c | 874 | #ifdef VMS |
5f1b979d | 875 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
46f3e16c | 876 | #else |
5f1b979d | 877 | sv_setnv(sv, (NV)errno); |
46f3e16c KW |
878 | #endif |
879 | #ifdef OS2 | |
5f1b979d KW |
880 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
881 | sv_setpv(sv, os2error(Perl_rc)); | |
882 | else | |
46f3e16c | 883 | #endif |
5f1b979d KW |
884 | if (! errno) { |
885 | sv_setpvs(sv, ""); | |
46f3e16c | 886 | } |
5f1b979d KW |
887 | else { |
888 | ||
889 | /* Strerror can return NULL on some platforms, which will | |
890 | * result in 'sv' not being considered SvOK. The SvNOK_on() | |
891 | * below will cause just the number part to be valid */ | |
2c6ee1a7 | 892 | sv_setpv(sv, my_strerror(errno)); |
5f1b979d KW |
893 | if (SvOK(sv)) { |
894 | fixup_errno_string(sv); | |
895 | } | |
896 | } | |
897 | RESTORE_ERRNO; | |
46f3e16c KW |
898 | } |
899 | ||
900 | SvRTRIM(sv); | |
901 | SvNOK_on(sv); /* what a wonderful hack! */ | |
902 | break; | |
903 | ||
79072805 | 904 | case '\006': /* ^F */ |
3280af22 | 905 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 906 | break; |
9ebf26ad FR |
907 | case '\007': /* ^GLOBAL_PHASE */ |
908 | if (strEQ(remaining, "LOBAL_PHASE")) { | |
909 | sv_setpvn(sv, PL_phase_names[PL_phase], | |
910 | strlen(PL_phase_names[PL_phase])); | |
911 | } | |
912 | break; | |
a0d0e21e | 913 | case '\010': /* ^H */ |
3280af22 | 914 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 915 | break; |
9d116dd7 | 916 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 917 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 918 | break; |
8561ea1d FC |
919 | case '\014': /* ^LAST_FH */ |
920 | if (strEQ(remaining, "AST_FH")) { | |
921 | if (PL_last_in_gv) { | |
922 | assert(isGV_with_GP(PL_last_in_gv)); | |
923 | SV_CHECK_THINKFIRST_COW_DROP(sv); | |
924 | prepare_SV_for_RV(sv); | |
925 | SvOK_off(sv); | |
926 | SvRV_set(sv, SvREFCNT_inc_simple_NN(PL_last_in_gv)); | |
927 | SvROK_on(sv); | |
928 | sv_rvweaken(sv); | |
929 | } | |
930 | else sv_setsv_nomg(sv, NULL); | |
931 | } | |
932 | break; | |
ac27b0f5 | 933 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 934 | if (nextchar == '\0') { |
ac27b0f5 | 935 | sv_setpv(sv, PL_osname); |
3511154c DM |
936 | SvTAINTED_off(sv); |
937 | } | |
823a54a3 | 938 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 939 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 940 | } |
28f23441 | 941 | break; |
9ebf26ad | 942 | case '\020': |
a6d0b1b5 | 943 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 944 | break; |
fb73857a | 945 | case '\023': /* ^S */ |
a6d0b1b5 | 946 | { |
bc177e6b | 947 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 948 | SvOK_off(sv); |
3280af22 | 949 | else if (PL_in_eval) |
6dc8a9e4 | 950 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
951 | else |
952 | sv_setiv(sv, 0); | |
d58bf5aa | 953 | } |
fb73857a | 954 | break; |
79072805 | 955 | case '\024': /* ^T */ |
823a54a3 | 956 | if (nextchar == '\0') { |
88e89b8a | 957 | #ifdef BIG_TIME |
7c36658b | 958 | sv_setnv(sv, PL_basetime); |
88e89b8a | 959 | #else |
7c36658b | 960 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 961 | #endif |
7c36658b | 962 | } |
823a54a3 | 963 | else if (strEQ(remaining, "AINT")) |
284167a5 S |
964 | sv_setiv(sv, TAINTING_get |
965 | ? (TAINT_WARN_get || PL_unsafe ? -1 : 1) | |
9aa05f58 | 966 | : 0); |
7c36658b | 967 | break; |
e07ea26a | 968 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 969 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 970 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 971 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 972 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
973 | else if (strEQ(remaining, "TF8CACHE")) |
974 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
975 | break; |
976 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 977 | if (nextchar == '\0') |
4438c4b7 | 978 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 979 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 980 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 981 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
982 | } |
983 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
7e4f0450 FC |
984 | sv_setsv(sv, &PL_sv_undef); |
985 | break; | |
013b78e8 | 986 | } |
d3a7d8c7 | 987 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
988 | /* Get the bit mask for $warnings::Bits{all}, because |
989 | * it could have been extended by warnings::register */ | |
4bac9ae4 CS |
990 | HV * const bits = get_hv("warnings::Bits", 0); |
991 | SV ** const bits_all = bits ? hv_fetchs(bits, "all", FALSE) : NULL; | |
992 | if (bits_all) | |
993 | sv_copypv(sv, *bits_all); | |
994 | else | |
995 | sv_setpvn(sv, WARN_ALLstring, WARNsize); | |
ac27b0f5 | 996 | } |
4438c4b7 | 997 | else { |
72dc9ed5 NC |
998 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
999 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 1000 | } |
4438c4b7 | 1001 | } |
79072805 | 1002 | break; |
79072805 | 1003 | case '+': |
aaa362c4 | 1004 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2c7b5d76 DM |
1005 | paren = RX_LASTPAREN(rx); |
1006 | if (paren) | |
1007 | goto do_numbuf_fetch; | |
79072805 | 1008 | } |
3280af22 | 1009 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 1010 | break; |
a01268b5 JH |
1011 | case '\016': /* ^N */ |
1012 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
2c7b5d76 DM |
1013 | paren = RX_LASTCLOSEPAREN(rx); |
1014 | if (paren) | |
1015 | goto do_numbuf_fetch; | |
a01268b5 JH |
1016 | } |
1017 | sv_setsv(sv,&PL_sv_undef); | |
1018 | break; | |
79072805 | 1019 | case '.': |
3280af22 | 1020 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 1021 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 1022 | } |
79072805 LW |
1023 | break; |
1024 | case '?': | |
809a5acc | 1025 | { |
809a5acc | 1026 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 1027 | #ifdef COMPLEX_STATUS |
41cb7b2b | 1028 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
1029 | LvTARGOFF(sv) = PL_statusvalue; |
1030 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 1031 | #endif |
809a5acc | 1032 | } |
79072805 LW |
1033 | break; |
1034 | case '^': | |
acbe1b9d | 1035 | if (GvIOp(PL_defoutgv)) |
099be4f1 | 1036 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
1037 | if (s) |
1038 | sv_setpv(sv,s); | |
1039 | else { | |
3280af22 | 1040 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 1041 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
1042 | } |
1043 | break; | |
1044 | case '~': | |
acbe1b9d | 1045 | if (GvIOp(PL_defoutgv)) |
0daa599b | 1046 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 1047 | if (!s) |
3280af22 | 1048 | s = GvENAME(PL_defoutgv); |
79072805 LW |
1049 | sv_setpv(sv,s); |
1050 | break; | |
79072805 | 1051 | case '=': |
099be4f1 | 1052 | if (GvIO(PL_defoutgv)) |
0daa599b | 1053 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
1054 | break; |
1055 | case '-': | |
099be4f1 | 1056 | if (GvIO(PL_defoutgv)) |
0daa599b | 1057 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
1058 | break; |
1059 | case '%': | |
099be4f1 | 1060 | if (GvIO(PL_defoutgv)) |
0daa599b | 1061 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 | 1062 | break; |
79072805 LW |
1063 | case ':': |
1064 | break; | |
1065 | case '/': | |
1066 | break; | |
1067 | case '[': | |
e1dccc0d | 1068 | sv_setiv(sv, 0); |
79072805 LW |
1069 | break; |
1070 | case '|': | |
099be4f1 | 1071 | if (GvIO(PL_defoutgv)) |
0daa599b | 1072 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 | 1073 | break; |
79072805 | 1074 | case '\\': |
b2ce0fda | 1075 | if (PL_ors_sv) |
f28098ff | 1076 | sv_copypv(sv, PL_ors_sv); |
4bac9ae4 CS |
1077 | else |
1078 | sv_setsv(sv, &PL_sv_undef); | |
79072805 | 1079 | break; |
0e219455 | 1080 | case '$': /* $$ */ |
9cdac2a2 FC |
1081 | { |
1082 | IV const pid = (IV)PerlProc_getpid(); | |
19db9fb7 | 1083 | if (isGV(mg->mg_obj) || SvIV(mg->mg_obj) != pid) { |
9cdac2a2 FC |
1084 | /* never set manually, or at least not since last fork */ |
1085 | sv_setiv(sv, pid); | |
19db9fb7 Z |
1086 | /* never unsafe, even if reading in a tainted expression */ |
1087 | SvTAINTED_off(sv); | |
1088 | } | |
9cdac2a2 FC |
1089 | /* else a value has been assigned manually, so do nothing */ |
1090 | } | |
0e219455 | 1091 | break; |
79072805 | 1092 | case '<': |
dfff4baf | 1093 | sv_setuid(sv, PerlProc_getuid()); |
79072805 LW |
1094 | break; |
1095 | case '>': | |
dfff4baf | 1096 | sv_setuid(sv, PerlProc_geteuid()); |
79072805 LW |
1097 | break; |
1098 | case '(': | |
dfff4baf | 1099 | sv_setgid(sv, PerlProc_getgid()); |
79072805 LW |
1100 | goto add_groups; |
1101 | case ')': | |
dfff4baf | 1102 | sv_setgid(sv, PerlProc_getegid()); |
79072805 | 1103 | add_groups: |
79072805 | 1104 | #ifdef HAS_GETGROUPS |
79072805 | 1105 | { |
57d7c65e | 1106 | Groups_t *gary = NULL; |
375ed12a JH |
1107 | I32 i; |
1108 | I32 num_groups = getgroups(0, gary); | |
1109 | if (num_groups > 0) { | |
1110 | Newx(gary, num_groups, Groups_t); | |
1111 | num_groups = getgroups(num_groups, gary); | |
1112 | for (i = 0; i < num_groups; i++) | |
1113 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
1114 | Safefree(gary); | |
1115 | } | |
79072805 | 1116 | } |
155aba94 | 1117 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1118 | #endif |
79072805 | 1119 | break; |
79072805 LW |
1120 | case '0': |
1121 | break; | |
1122 | } | |
a0d0e21e | 1123 | return 0; |
79072805 LW |
1124 | } |
1125 | ||
1126 | int | |
864dbfa3 | 1127 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1128 | { |
8772537c | 1129 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 1130 | |
7918f24d NC |
1131 | PERL_ARGS_ASSERT_MAGIC_GETUVAR; |
1132 | ||
79072805 | 1133 | if (uf && uf->uf_val) |
24f81a43 | 1134 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1135 | return 0; |
1136 | } | |
1137 | ||
1138 | int | |
864dbfa3 | 1139 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1140 | { |
9ae3433d | 1141 | STRLEN len = 0, klen; |
12033064 | 1142 | const char * const key = MgPV_const(mg,klen); |
888a67f6 | 1143 | const char *s = ""; |
1e422769 | 1144 | |
7918f24d NC |
1145 | PERL_ARGS_ASSERT_MAGIC_SETENV; |
1146 | ||
613c63b4 | 1147 | SvGETMAGIC(sv); |
12033064 | 1148 | if (SvOK(sv)) { |
613c63b4 CS |
1149 | /* defined environment variables are byte strings; unfortunately |
1150 | there is no SvPVbyte_force_nomg(), so we must do this piecewise */ | |
1151 | (void)SvPV_force_nomg_nolen(sv); | |
1152 | sv_utf8_downgrade(sv, /* fail_ok */ TRUE); | |
1153 | if (SvUTF8(sv)) { | |
1154 | Perl_ck_warner_d(aTHX_ packWARN(WARN_UTF8), "Wide character in %s", "setenv"); | |
1155 | SvUTF8_off(sv); | |
1156 | } | |
1157 | s = SvPVX(sv); | |
1158 | len = SvCUR(sv); | |
12033064 CS |
1159 | } |
1160 | my_setenv(key, s); /* does the deed */ | |
1161 | ||
a0d0e21e LW |
1162 | #ifdef DYNAMIC_ENV_FETCH |
1163 | /* We just undefd an environment var. Is a replacement */ | |
1164 | /* waiting in the wings? */ | |
1165 | if (!len) { | |
6bd66ee9 | 1166 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), key, klen, FALSE); |
fabdb6c0 | 1167 | if (valp) |
4ab59fcc | 1168 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1169 | } |
1170 | #endif | |
1e422769 | 1171 | |
39e571d4 | 1172 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1173 | /* And you'll never guess what the dog had */ |
1174 | /* in its mouth... */ | |
284167a5 | 1175 | if (TAINTING_get) { |
1e422769 | 1176 | MgTAINTEDDIR_off(mg); |
1177 | #ifdef VMS | |
6bd66ee9 | 1178 | if (s && klen == 8 && strEQ(key, "DCL$PATH")) { |
b8ffc8df | 1179 | char pathbuf[256], eltbuf[256], *cp, *elt; |
1e422769 | 1180 | int i = 0, j = 0; |
1181 | ||
6fca0082 | 1182 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1183 | elt = eltbuf; |
1e422769 | 1184 | do { /* DCL$PATH may be a search list */ |
1185 | while (1) { /* as may dev portion of any element */ | |
1186 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1187 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1188 | cando_by_name(S_IWUSR,0,elt) ) { | |
1189 | MgTAINTEDDIR_on(mg); | |
1190 | return 0; | |
1191 | } | |
1192 | } | |
bd61b366 | 1193 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1194 | *cp = '\0'; |
1195 | if (my_trnlnm(elt, eltbuf, j++)) | |
1196 | elt = eltbuf; | |
1197 | else | |
1198 | break; | |
1199 | } | |
1200 | j = 0; | |
1201 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1202 | } | |
1203 | #endif /* VMS */ | |
12033064 | 1204 | if (s && klen == 4 && strEQ(key,"PATH")) { |
8772537c | 1205 | const char * const strend = s + len; |
463ee0b2 LW |
1206 | |
1207 | while (s < strend) { | |
96827780 | 1208 | char tmpbuf[256]; |
c623ac67 | 1209 | Stat_t st; |
5f74f29c | 1210 | I32 i; |
f5a63d97 AL |
1211 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1212 | const char path_sep = '|'; | |
1213 | #else | |
1214 | const char path_sep = ':'; | |
1215 | #endif | |
96827780 | 1216 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1217 | s, strend, path_sep, &i); |
463ee0b2 | 1218 | s++; |
bb7a0f54 | 1219 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1220 | #ifdef VMS |
1221 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1222 | #else | |
1223 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1224 | #endif | |
c6ed36e1 | 1225 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1226 | MgTAINTEDDIR_on(mg); |
1e422769 | 1227 | return 0; |
1228 | } | |
463ee0b2 | 1229 | } |
79072805 LW |
1230 | } |
1231 | } | |
39e571d4 | 1232 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1233 | |
79072805 LW |
1234 | return 0; |
1235 | } | |
1236 | ||
1237 | int | |
864dbfa3 | 1238 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1239 | { |
7918f24d | 1240 | PERL_ARGS_ASSERT_MAGIC_CLEARENV; |
8772537c | 1241 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1242 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1243 | return 0; |
1244 | } | |
1245 | ||
88e89b8a | 1246 | int |
864dbfa3 | 1247 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1248 | { |
7918f24d | 1249 | PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV; |
65e66c80 | 1250 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1251 | #if defined(VMS) |
cea2e8a9 | 1252 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1253 | #else |
3280af22 | 1254 | if (PL_localizing) { |
fb73857a | 1255 | HE* entry; |
b0269e46 | 1256 | my_clearenv(); |
85fbaab2 NC |
1257 | hv_iterinit(MUTABLE_HV(sv)); |
1258 | while ((entry = hv_iternext(MUTABLE_HV(sv)))) { | |
fb73857a | 1259 | I32 keylen; |
1260 | my_setenv(hv_iterkey(entry, &keylen), | |
85fbaab2 | 1261 | SvPV_nolen_const(hv_iterval(MUTABLE_HV(sv), entry))); |
fb73857a | 1262 | } |
1263 | } | |
1264 | #endif | |
1265 | return 0; | |
1266 | } | |
1267 | ||
1268 | int | |
864dbfa3 | 1269 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1270 | { |
7918f24d | 1271 | PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV; |
8772537c AL |
1272 | PERL_UNUSED_ARG(sv); |
1273 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1274 | #if defined(VMS) |
1275 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1276 | #else | |
1277 | my_clearenv(); | |
1278 | #endif | |
3e3baf6d | 1279 | return 0; |
66b1d557 HM |
1280 | } |
1281 | ||
64ca3a65 | 1282 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1283 | #ifdef HAS_SIGPROCMASK |
1284 | static void | |
1285 | restore_sigmask(pTHX_ SV *save_sv) | |
1286 | { | |
0bd48802 | 1287 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1288 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1289 | } |
1290 | #endif | |
66b1d557 | 1291 | int |
864dbfa3 | 1292 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1293 | { |
88e89b8a | 1294 | /* Are we fetching a signal entry? */ |
708854f2 | 1295 | int i = (I16)mg->mg_private; |
7918f24d NC |
1296 | |
1297 | PERL_ARGS_ASSERT_MAGIC_GETSIG; | |
1298 | ||
708854f2 | 1299 | if (!i) { |
84c7b88c BF |
1300 | STRLEN siglen; |
1301 | const char * sig = MgPV_const(mg, siglen); | |
1302 | mg->mg_private = i = whichsig_pvn(sig, siglen); | |
708854f2 NC |
1303 | } |
1304 | ||
e02bfb16 | 1305 | if (i > 0) { |
22c35a8c GS |
1306 | if(PL_psig_ptr[i]) |
1307 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1308 | else { |
46da273f | 1309 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1310 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1311 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1312 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1313 | #endif |
1314 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1315 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1316 | sigstate = SIG_DFL; | |
85b332e2 | 1317 | #endif |
88e89b8a | 1318 | /* cache state so we don't fetch it again */ |
8aad04aa | 1319 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1320 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1321 | else |
3280af22 | 1322 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1323 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1324 | SvTEMP_off(sv); |
1325 | } | |
1326 | } | |
1327 | return 0; | |
1328 | } | |
1329 | int | |
864dbfa3 | 1330 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1331 | { |
7918f24d | 1332 | PERL_ARGS_ASSERT_MAGIC_CLEARSIG; |
179c85a2 | 1333 | |
38a124f0 | 1334 | magic_setsig(NULL, mg); |
179c85a2 | 1335 | return sv_unmagic(sv, mg->mg_type); |
88e89b8a | 1336 | } |
3d37d572 | 1337 | |
0a8e0eff | 1338 | Signal_t |
8aad04aa | 1339 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1340 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1341 | #else |
0a8e0eff | 1342 | Perl_csighandler(int sig) |
8aad04aa | 1343 | #endif |
0a8e0eff | 1344 | { |
1018e26f NIS |
1345 | #ifdef PERL_GET_SIG_CONTEXT |
1346 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1347 | #else | |
85b332e2 CL |
1348 | dTHX; |
1349 | #endif | |
ffb6256b JH |
1350 | #if defined(__cplusplus) && defined(__GNUC__) |
1351 | /* g++ doesn't support PERL_UNUSED_DECL, so the sip and uap | |
1352 | * parameters would be warned about. */ | |
1353 | PERL_UNUSED_ARG(sip); | |
1354 | PERL_UNUSED_ARG(uap); | |
1355 | #endif | |
23ada85b | 1356 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1357 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1358 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1359 | #endif |
2e34cc90 | 1360 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1361 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1362 | #ifdef KILL_BY_SIGPRC |
1363 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1364 | #else | |
1365 | exit(1); | |
1366 | #endif | |
1367 | #endif | |
406878dd | 1368 | if ( |
853d2c32 RGS |
1369 | #ifdef SIGILL |
1370 | sig == SIGILL || | |
1371 | #endif | |
1372 | #ifdef SIGBUS | |
1373 | sig == SIGBUS || | |
1374 | #endif | |
1375 | #ifdef SIGSEGV | |
1376 | sig == SIGSEGV || | |
1377 | #endif | |
1378 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 | 1379 | /* Call the perl level handler now-- |
31c91b43 | 1380 | * with risk we may be in malloc() or being destructed etc. */ |
6e324d09 | 1381 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1382 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1383 | #else |
1384 | (*PL_sighandlerp)(sig); | |
92807b6d | 1385 | #endif |
406878dd | 1386 | else { |
31c91b43 | 1387 | if (!PL_psig_pend) return; |
406878dd GA |
1388 | /* Set a flag to say this signal is pending, that is awaiting delivery after |
1389 | * the current Perl opcode completes */ | |
1390 | PL_psig_pend[sig]++; | |
1391 | ||
1392 | #ifndef SIG_PENDING_DIE_COUNT | |
1393 | # define SIG_PENDING_DIE_COUNT 120 | |
1394 | #endif | |
fe13d51d | 1395 | /* Add one to say _a_ signal is pending */ |
406878dd GA |
1396 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1397 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1398 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
1399 | } | |
0a8e0eff NIS |
1400 | } |
1401 | ||
2e34cc90 CL |
1402 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1403 | void | |
1404 | Perl_csighandler_init(void) | |
1405 | { | |
1406 | int sig; | |
27da23d5 | 1407 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1408 | |
1409 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1410 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1411 | dTHX; |
27da23d5 | 1412 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1413 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1414 | #endif |
1415 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1416 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1417 | #endif |
1418 | } | |
27da23d5 | 1419 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1420 | } |
1421 | #endif | |
1422 | ||
7fe50b8b LT |
1423 | #if defined HAS_SIGPROCMASK |
1424 | static void | |
1425 | unblock_sigmask(pTHX_ void* newset) | |
1426 | { | |
dc3bf405 | 1427 | PERL_UNUSED_CONTEXT; |
7fe50b8b LT |
1428 | sigprocmask(SIG_UNBLOCK, (sigset_t*)newset, NULL); |
1429 | } | |
1430 | #endif | |
1431 | ||
0a8e0eff NIS |
1432 | void |
1433 | Perl_despatch_signals(pTHX) | |
1434 | { | |
1435 | int sig; | |
1436 | PL_sig_pending = 0; | |
1437 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1438 | if (PL_psig_pend[sig]) { | |
d0166017 | 1439 | dSAVE_ERRNO; |
7fe50b8b | 1440 | #ifdef HAS_SIGPROCMASK |
55534442 LT |
1441 | /* From sigaction(2) (FreeBSD man page): |
1442 | * | Signal routines normally execute with the signal that | |
1443 | * | caused their invocation blocked, but other signals may | |
1444 | * | yet occur. | |
1445 | * Emulation of this behavior (from within Perl) is enabled | |
1446 | * using sigprocmask | |
1447 | */ | |
1448 | int was_blocked; | |
1449 | sigset_t newset, oldset; | |
1450 | ||
1451 | sigemptyset(&newset); | |
1452 | sigaddset(&newset, sig); | |
1453 | sigprocmask(SIG_BLOCK, &newset, &oldset); | |
1454 | was_blocked = sigismember(&oldset, sig); | |
7fe50b8b LT |
1455 | if (!was_blocked) { |
1456 | SV* save_sv = newSVpvn((char *)(&newset), sizeof(sigset_t)); | |
1457 | ENTER; | |
1458 | SAVEFREESV(save_sv); | |
1459 | SAVEDESTRUCTOR_X(unblock_sigmask, SvPV_nolen(save_sv)); | |
1460 | } | |
55534442 | 1461 | #endif |
25da4428 | 1462 | PL_psig_pend[sig] = 0; |
6e324d09 | 1463 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1464 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1465 | #else |
1466 | (*PL_sighandlerp)(sig); | |
92807b6d | 1467 | #endif |
7fe50b8b | 1468 | #ifdef HAS_SIGPROCMASK |
55534442 | 1469 | if (!was_blocked) |
7fe50b8b | 1470 | LEAVE; |
55534442 | 1471 | #endif |
d0166017 | 1472 | RESTORE_ERRNO; |
0a8e0eff NIS |
1473 | } |
1474 | } | |
1475 | } | |
1476 | ||
38a124f0 | 1477 | /* sv of NULL signifies that we're acting as magic_clearsig. */ |
85e6fe83 | 1478 | int |
864dbfa3 | 1479 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1480 | { |
27da23d5 | 1481 | dVAR; |
79072805 | 1482 | I32 i; |
cbbf8932 | 1483 | SV** svp = NULL; |
2d4fcd5e AJ |
1484 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1485 | * effects (due to closures). We must make sure that the new disposition | |
1486 | * is in place before it is called. | |
1487 | */ | |
cbbf8932 | 1488 | SV* to_dec = NULL; |
e72dc28c | 1489 | STRLEN len; |
2d4fcd5e AJ |
1490 | #ifdef HAS_SIGPROCMASK |
1491 | sigset_t set, save; | |
1492 | SV* save_sv; | |
1493 | #endif | |
eb578fdb | 1494 | const char *s = MgPV_const(mg,len); |
7918f24d NC |
1495 | |
1496 | PERL_ARGS_ASSERT_MAGIC_SETSIG; | |
1497 | ||
748a9306 | 1498 | if (*s == '_') { |
84c7b88c | 1499 | if (memEQs(s, len, "__DIE__")) |
3280af22 | 1500 | svp = &PL_diehook; |
84c7b88c | 1501 | else if (memEQs(s, len, "__WARN__") |
38a124f0 NC |
1502 | && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) { |
1503 | /* Merge the existing behaviours, which are as follows: | |
1504 | magic_setsig, we always set svp to &PL_warnhook | |
1505 | (hence we always change the warnings handler) | |
1506 | For magic_clearsig, we don't change the warnings handler if it's | |
1507 | set to the &PL_warnhook. */ | |
3280af22 | 1508 | svp = &PL_warnhook; |
84c7b88c BF |
1509 | } else if (sv) { |
1510 | SV *tmp = sv_newmortal(); | |
1511 | Perl_croak(aTHX_ "No such hook: %s", | |
1512 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1513 | } | |
748a9306 | 1514 | i = 0; |
38a124f0 | 1515 | if (svp && *svp) { |
9289f461 RGS |
1516 | if (*svp != PERL_WARNHOOK_FATAL) |
1517 | to_dec = *svp; | |
cbbf8932 | 1518 | *svp = NULL; |
4633a7c4 | 1519 | } |
748a9306 LW |
1520 | } |
1521 | else { | |
708854f2 NC |
1522 | i = (I16)mg->mg_private; |
1523 | if (!i) { | |
84c7b88c | 1524 | i = whichsig_pvn(s, len); /* ...no, a brick */ |
58a26b12 | 1525 | mg->mg_private = (U16)i; |
708854f2 | 1526 | } |
86d86cad | 1527 | if (i <= 0) { |
84c7b88c BF |
1528 | if (sv) { |
1529 | SV *tmp = sv_newmortal(); | |
1530 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", | |
1531 | pv_pretty(tmp, s, len, 0, NULL, NULL, 0)); | |
1532 | } | |
748a9306 LW |
1533 | return 0; |
1534 | } | |
2d4fcd5e AJ |
1535 | #ifdef HAS_SIGPROCMASK |
1536 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1537 | sigemptyset(&set); | |
1538 | sigaddset(&set,i); | |
1539 | sigprocmask(SIG_BLOCK, &set, &save); | |
1540 | ENTER; | |
9ff8e806 | 1541 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1542 | SAVEFREESV(save_sv); |
1543 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1544 | #endif | |
1545 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1546 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1547 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1548 | #endif |
23ada85b | 1549 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1550 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1551 | #endif |
2e34cc90 | 1552 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1553 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1554 | #endif |
2d4fcd5e | 1555 | to_dec = PL_psig_ptr[i]; |
38a124f0 NC |
1556 | if (sv) { |
1557 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); | |
1558 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ | |
79fd3822 NC |
1559 | |
1560 | /* Signals don't change name during the program's execution, so once | |
1561 | they're cached in the appropriate slot of PL_psig_name, they can | |
1562 | stay there. | |
1563 | ||
1564 | Ideally we'd find some way of making SVs at (C) compile time, or | |
1565 | at least, doing most of the work. */ | |
1566 | if (!PL_psig_name[i]) { | |
1567 | PL_psig_name[i] = newSVpvn(s, len); | |
1568 | SvREADONLY_on(PL_psig_name[i]); | |
1569 | } | |
38a124f0 | 1570 | } else { |
79fd3822 | 1571 | SvREFCNT_dec(PL_psig_name[i]); |
38a124f0 NC |
1572 | PL_psig_name[i] = NULL; |
1573 | PL_psig_ptr[i] = NULL; | |
1574 | } | |
748a9306 | 1575 | } |
38a124f0 | 1576 | if (sv && (isGV_with_GP(sv) || SvROK(sv))) { |
2d4fcd5e | 1577 | if (i) { |
5c1546dc | 1578 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1579 | } |
748a9306 | 1580 | else |
b37c2d43 | 1581 | *svp = SvREFCNT_inc_simple_NN(sv); |
38a124f0 | 1582 | } else { |
9dfa190b NC |
1583 | if (sv && SvOK(sv)) { |
1584 | s = SvPV_force(sv, len); | |
1585 | } else { | |
1586 | sv = NULL; | |
1587 | } | |
84c7b88c | 1588 | if (sv && memEQs(s, len,"IGNORE")) { |
9dfa190b | 1589 | if (i) { |
23ada85b | 1590 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
9dfa190b NC |
1591 | PL_sig_ignoring[i] = 1; |
1592 | (void)rsignal(i, PL_csighandlerp); | |
85b332e2 | 1593 | #else |
9dfa190b | 1594 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1595 | #endif |
9dfa190b | 1596 | } |
2d4fcd5e | 1597 | } |
84c7b88c | 1598 | else if (!sv || memEQs(s, len,"DEFAULT") || !len) { |
9dfa190b | 1599 | if (i) { |
2e34cc90 | 1600 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
9dfa190b NC |
1601 | PL_sig_defaulting[i] = 1; |
1602 | (void)rsignal(i, PL_csighandlerp); | |
2e34cc90 | 1603 | #else |
9dfa190b | 1604 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1605 | #endif |
9dfa190b NC |
1606 | } |
1607 | } | |
1608 | else { | |
1609 | /* | |
1610 | * We should warn if HINT_STRICT_REFS, but without | |
1611 | * access to a known hint bit in a known OP, we can't | |
1612 | * tell whether HINT_STRICT_REFS is in force or not. | |
1613 | */ | |
1614 | if (!strchr(s,':') && !strchr(s,'\'')) | |
1615 | Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"), | |
1616 | SV_GMAGIC); | |
1617 | if (i) | |
1618 | (void)rsignal(i, PL_csighandlerp); | |
1619 | else | |
1620 | *svp = SvREFCNT_inc_simple_NN(sv); | |
136e0459 | 1621 | } |
748a9306 | 1622 | } |
9dfa190b | 1623 | |
2d4fcd5e AJ |
1624 | #ifdef HAS_SIGPROCMASK |
1625 | if(i) | |
1626 | LEAVE; | |
1627 | #endif | |
ef8d46e8 | 1628 | SvREFCNT_dec(to_dec); |
79072805 LW |
1629 | return 0; |
1630 | } | |
64ca3a65 | 1631 | #endif /* !PERL_MICRO */ |
79072805 LW |
1632 | |
1633 | int | |
864dbfa3 | 1634 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1635 | { |
7918f24d | 1636 | PERL_ARGS_ASSERT_MAGIC_SETISA; |
8772537c | 1637 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1638 | |
89c14e2e | 1639 | /* Skip _isaelem because _isa will handle it shortly */ |
354b0578 | 1640 | if (PL_delaymagic & DM_ARRAY_ISA && mg->mg_type == PERL_MAGIC_isaelem) |
89c14e2e BB |
1641 | return 0; |
1642 | ||
0e446081 | 1643 | return magic_clearisa(NULL, mg); |
463ee0b2 LW |
1644 | } |
1645 | ||
0e446081 | 1646 | /* sv of NULL signifies that we're acting as magic_setisa. */ |
463ee0b2 | 1647 | int |
52b45067 RD |
1648 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1649 | { | |
52b45067 | 1650 | HV* stash; |
7918f24d NC |
1651 | PERL_ARGS_ASSERT_MAGIC_CLEARISA; |
1652 | ||
52b45067 | 1653 | /* Bail out if destruction is going on */ |
627364f1 | 1654 | if(PL_phase == PERL_PHASE_DESTRUCT) return 0; |
52b45067 | 1655 | |
0e446081 NC |
1656 | if (sv) |
1657 | av_clear(MUTABLE_AV(sv)); | |
52b45067 | 1658 | |
6624142a FC |
1659 | if (SvTYPE(mg->mg_obj) != SVt_PVGV && SvSMAGICAL(mg->mg_obj)) |
1660 | /* This occurs with setisa_elem magic, which calls this | |
1661 | same function. */ | |
1662 | mg = mg_find(mg->mg_obj, PERL_MAGIC_isa); | |
1663 | ||
316ebaf2 | 1664 | assert(mg); |
6624142a FC |
1665 | if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */ |
1666 | SV **svp = AvARRAY((AV *)mg->mg_obj); | |
1667 | I32 items = AvFILLp((AV *)mg->mg_obj) + 1; | |
1668 | while (items--) { | |
1669 | stash = GvSTASH((GV *)*svp++); | |
1670 | if (stash && HvENAME(stash)) mro_isa_changed_in(stash); | |
1671 | } | |
1672 | ||
1673 | return 0; | |
1674 | } | |
1675 | ||
52b45067 | 1676 | stash = GvSTASH( |
6624142a | 1677 | (const GV *)mg->mg_obj |
52b45067 RD |
1678 | ); |
1679 | ||
00169e2c FC |
1680 | /* The stash may have been detached from the symbol table, so check its |
1681 | name before doing anything. */ | |
1682 | if (stash && HvENAME_get(stash)) | |
5562fa71 | 1683 | mro_isa_changed_in(stash); |
52b45067 RD |
1684 | |
1685 | return 0; | |
1686 | } | |
1687 | ||
1688 | int | |
864dbfa3 | 1689 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1690 | { |
85fbaab2 | 1691 | HV * const hv = MUTABLE_HV(LvTARG(sv)); |
6ff81951 | 1692 | I32 i = 0; |
7918f24d NC |
1693 | |
1694 | PERL_ARGS_ASSERT_MAGIC_GETNKEYS; | |
8772537c | 1695 | PERL_UNUSED_ARG(mg); |
7719e241 | 1696 | |
6ff81951 | 1697 | if (hv) { |
497b47a8 | 1698 | (void) hv_iterinit(hv); |
ad64d0ec | 1699 | if (! SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)) |
1b95d04f | 1700 | i = HvUSEDKEYS(hv); |
497b47a8 JH |
1701 | else { |
1702 | while (hv_iternext(hv)) | |
1703 | i++; | |
1704 | } | |
6ff81951 GS |
1705 | } |
1706 | ||
1707 | sv_setiv(sv, (IV)i); | |
1708 | return 0; | |
1709 | } | |
1710 | ||
1711 | int | |
864dbfa3 | 1712 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1713 | { |
7918f24d | 1714 | PERL_ARGS_ASSERT_MAGIC_SETNKEYS; |
8772537c | 1715 | PERL_UNUSED_ARG(mg); |
946ec16e | 1716 | if (LvTARG(sv)) { |
85fbaab2 | 1717 | hv_ksplit(MUTABLE_HV(LvTARG(sv)), SvIV(sv)); |
946ec16e | 1718 | } |
1719 | return 0; | |
ac27b0f5 | 1720 | } |
946ec16e | 1721 | |
efaf3674 DM |
1722 | /* |
1723 | =for apidoc magic_methcall | |
1724 | ||
1725 | Invoke a magic method (like FETCH). | |
1726 | ||
2baee27b FC |
1727 | C<sv> and C<mg> are the tied thingy and the tie magic. |
1728 | ||
1729 | C<meth> is the name of the method to call. | |
1730 | ||
1731 | C<argc> is the number of args (in addition to $self) to pass to the method. | |
1732 | ||
1733 | The C<flags> can be: | |
1734 | ||
1735 | G_DISCARD invoke method with G_DISCARD flag and don't | |
1736 | return a value | |
1737 | G_UNDEF_FILL fill the stack with argc pointers to | |
1738 | PL_sv_undef | |
1739 | ||
1740 | The arguments themselves are any values following the C<flags> argument. | |
efaf3674 DM |
1741 | |
1742 | Returns the SV (if any) returned by the method, or NULL on failure. | |
1743 | ||
1744 | ||
1745 | =cut | |
1746 | */ | |
1747 | ||
1748 | SV* | |
36925d9e | 1749 | Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, SV *meth, U32 flags, |
046b0c7d | 1750 | U32 argc, ...) |
a0d0e21e LW |
1751 | { |
1752 | dSP; | |
efaf3674 | 1753 | SV* ret = NULL; |
463ee0b2 | 1754 | |
7918f24d NC |
1755 | PERL_ARGS_ASSERT_MAGIC_METHCALL; |
1756 | ||
efaf3674 | 1757 | ENTER; |
d1d7a15d NC |
1758 | |
1759 | if (flags & G_WRITING_TO_STDERR) { | |
1760 | SAVETMPS; | |
1761 | ||
1762 | save_re_context(); | |
1763 | SAVESPTR(PL_stderrgv); | |
1764 | PL_stderrgv = NULL; | |
1765 | } | |
1766 | ||
efaf3674 | 1767 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1768 | PUSHMARK(SP); |
efaf3674 | 1769 | |
67549bd2 NC |
1770 | EXTEND(SP, argc+1); |
1771 | PUSHs(SvTIED_obj(sv, mg)); | |
1772 | if (flags & G_UNDEF_FILL) { | |
1773 | while (argc--) { | |
efaf3674 | 1774 | PUSHs(&PL_sv_undef); |
93965878 | 1775 | } |
67549bd2 | 1776 | } else if (argc > 0) { |
046b0c7d NC |
1777 | va_list args; |
1778 | va_start(args, argc); | |
1779 | ||
1780 | do { | |
1781 | SV *const sv = va_arg(args, SV *); | |
1782 | PUSHs(sv); | |
1783 | } while (--argc); | |
1784 | ||
1785 | va_end(args); | |
88e89b8a | 1786 | } |
463ee0b2 | 1787 | PUTBACK; |
efaf3674 | 1788 | if (flags & G_DISCARD) { |
36925d9e | 1789 | call_sv(meth, G_SCALAR|G_DISCARD|G_METHOD_NAMED); |
efaf3674 DM |
1790 | } |
1791 | else { | |
36925d9e | 1792 | if (call_sv(meth, G_SCALAR|G_METHOD_NAMED)) |
efaf3674 DM |
1793 | ret = *PL_stack_sp--; |
1794 | } | |
1795 | POPSTACK; | |
d1d7a15d NC |
1796 | if (flags & G_WRITING_TO_STDERR) |
1797 | FREETMPS; | |
efaf3674 DM |
1798 | LEAVE; |
1799 | return ret; | |
1800 | } | |
1801 | ||
efaf3674 | 1802 | /* wrapper for magic_methcall that creates the first arg */ |
463ee0b2 | 1803 | |
efaf3674 | 1804 | STATIC SV* |
36925d9e | 1805 | S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, SV *meth, U32 flags, |
efaf3674 DM |
1806 | int n, SV *val) |
1807 | { | |
efaf3674 DM |
1808 | SV* arg1 = NULL; |
1809 | ||
1810 | PERL_ARGS_ASSERT_MAGIC_METHCALL1; | |
1811 | ||
1812 | if (mg->mg_ptr) { | |
1813 | if (mg->mg_len >= 0) { | |
db4b3a1d | 1814 | arg1 = newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
efaf3674 DM |
1815 | } |
1816 | else if (mg->mg_len == HEf_SVKEY) | |
1817 | arg1 = MUTABLE_SV(mg->mg_ptr); | |
1818 | } | |
1819 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { | |
db4b3a1d | 1820 | arg1 = newSViv((IV)(mg->mg_len)); |
efaf3674 DM |
1821 | sv_2mortal(arg1); |
1822 | } | |
1823 | if (!arg1) { | |
046b0c7d | 1824 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n - 1, val); |
efaf3674 | 1825 | } |
046b0c7d | 1826 | return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n, arg1, val); |
946ec16e | 1827 | } |
1828 | ||
76e3520e | 1829 | STATIC int |
36925d9e | 1830 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, SV *meth) |
a0d0e21e | 1831 | { |
efaf3674 | 1832 | SV* ret; |
463ee0b2 | 1833 | |
7918f24d NC |
1834 | PERL_ARGS_ASSERT_MAGIC_METHPACK; |
1835 | ||
efaf3674 DM |
1836 | ret = magic_methcall1(sv, mg, meth, 0, 1, NULL); |
1837 | if (ret) | |
1838 | sv_setsv(sv, ret); | |
a0d0e21e LW |
1839 | return 0; |
1840 | } | |
463ee0b2 | 1841 | |
a0d0e21e | 1842 | int |
864dbfa3 | 1843 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1844 | { |
7918f24d NC |
1845 | PERL_ARGS_ASSERT_MAGIC_GETPACK; |
1846 | ||
fd69380d | 1847 | if (mg->mg_type == PERL_MAGIC_tiedelem) |
a0d0e21e | 1848 | mg->mg_flags |= MGf_GSKIP; |
36925d9e | 1849 | magic_methpack(sv,mg,SV_CONST(FETCH)); |
463ee0b2 LW |
1850 | return 0; |
1851 | } | |
1852 | ||
1853 | int | |
864dbfa3 | 1854 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1855 | { |
b112cff9 DM |
1856 | MAGIC *tmg; |
1857 | SV *val; | |
7918f24d NC |
1858 | |
1859 | PERL_ARGS_ASSERT_MAGIC_SETPACK; | |
1860 | ||
b112cff9 DM |
1861 | /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to |
1862 | * STORE() is not $val, but rather a PVLV (the sv in this call), whose | |
1863 | * public flags indicate its value based on copying from $val. Doing | |
1864 | * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us. | |
1865 | * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes | |
1866 | * wrong if $val happened to be tainted, as sv hasn't got magic | |
1867 | * enabled, even though taint magic is in the chain. In which case, | |
1868 | * fake up a temporary tainted value (this is easier than temporarily | |
1869 | * re-enabling magic on sv). */ | |
1870 | ||
284167a5 | 1871 | if (TAINTING_get && (tmg = mg_find(sv, PERL_MAGIC_taint)) |
b112cff9 DM |
1872 | && (tmg->mg_len & 1)) |
1873 | { | |
1874 | val = sv_mortalcopy(sv); | |
1875 | SvTAINTED_on(val); | |
1876 | } | |
1877 | else | |
1878 | val = sv; | |
1879 | ||
36925d9e | 1880 | magic_methcall1(sv, mg, SV_CONST(STORE), G_DISCARD, 2, val); |
463ee0b2 LW |
1881 | return 0; |
1882 | } | |
1883 | ||
1884 | int | |
864dbfa3 | 1885 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1886 | { |
7918f24d NC |
1887 | PERL_ARGS_ASSERT_MAGIC_CLEARPACK; |
1888 | ||
4c13be3f | 1889 | if (mg->mg_type == PERL_MAGIC_tiedscalar) return 0; |
36925d9e | 1890 | return magic_methpack(sv,mg,SV_CONST(DELETE)); |
a0d0e21e | 1891 | } |
463ee0b2 | 1892 | |
93965878 NIS |
1893 | |
1894 | U32 | |
864dbfa3 | 1895 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1896 | { |
22846ab4 | 1897 | I32 retval = 0; |
efaf3674 | 1898 | SV* retsv; |
93965878 | 1899 | |
7918f24d NC |
1900 | PERL_ARGS_ASSERT_MAGIC_SIZEPACK; |
1901 | ||
36925d9e | 1902 | retsv = magic_methcall1(sv, mg, SV_CONST(FETCHSIZE), 0, 1, NULL); |
efaf3674 DM |
1903 | if (retsv) { |
1904 | retval = SvIV(retsv)-1; | |
22846ab4 AB |
1905 | if (retval < -1) |
1906 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1907 | } |
22846ab4 | 1908 | return (U32) retval; |
93965878 NIS |
1909 | } |
1910 | ||
cea2e8a9 GS |
1911 | int |
1912 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1913 | { |
7918f24d NC |
1914 | PERL_ARGS_ASSERT_MAGIC_WIPEPACK; |
1915 | ||
36925d9e | 1916 | Perl_magic_methcall(aTHX_ sv, mg, SV_CONST(CLEAR), G_DISCARD, 0); |
463ee0b2 LW |
1917 | return 0; |
1918 | } | |
1919 | ||
1920 | int | |
864dbfa3 | 1921 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1922 | { |
efaf3674 | 1923 | SV* ret; |
463ee0b2 | 1924 | |
7918f24d NC |
1925 | PERL_ARGS_ASSERT_MAGIC_NEXTPACK; |
1926 | ||
36925d9e RZ |
1927 | ret = SvOK(key) ? Perl_magic_methcall(aTHX_ sv, mg, SV_CONST(NEXTKEY), 0, 1, key) |
1928 | : Perl_magic_methcall(aTHX_ sv, mg, SV_CONST(FIRSTKEY), 0, 0); | |
efaf3674 DM |
1929 | if (ret) |
1930 | sv_setsv(key,ret); | |
79072805 LW |
1931 | return 0; |
1932 | } | |
1933 | ||
1934 | int | |
1146e912 | 1935 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e | 1936 | { |
7918f24d NC |
1937 | PERL_ARGS_ASSERT_MAGIC_EXISTSPACK; |
1938 | ||
36925d9e | 1939 | return magic_methpack(sv,mg,SV_CONST(EXISTS)); |
ac27b0f5 | 1940 | } |
a0d0e21e | 1941 | |
a3bcc51e TP |
1942 | SV * |
1943 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1944 | { | |
5fcbf73d | 1945 | SV *retval; |
ad64d0ec NC |
1946 | SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg); |
1947 | HV * const pkg = SvSTASH((const SV *)SvRV(tied)); | |
a3bcc51e | 1948 | |
7918f24d NC |
1949 | PERL_ARGS_ASSERT_MAGIC_SCALARPACK; |
1950 | ||
a3bcc51e TP |
1951 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { |
1952 | SV *key; | |
bfcb3514 | 1953 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1954 | /* we are in an iteration so the hash cannot be empty */ |
1955 | return &PL_sv_yes; | |
1956 | /* no xhv_eiter so now use FIRSTKEY */ | |
1957 | key = sv_newmortal(); | |
ad64d0ec | 1958 | magic_nextpack(MUTABLE_SV(hv), mg, key); |
bfcb3514 | 1959 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1960 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1961 | } | |
1962 | ||
1963 | /* there is a SCALAR method that we can call */ | |
36925d9e | 1964 | retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(hv), mg, SV_CONST(SCALAR), 0, 0); |
efaf3674 | 1965 | if (!retval) |
5fcbf73d | 1966 | retval = &PL_sv_undef; |
a3bcc51e TP |
1967 | return retval; |
1968 | } | |
1969 | ||
a0d0e21e | 1970 | int |
864dbfa3 | 1971 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1972 | { |
089b5c60 | 1973 | SV **svp; |
7918f24d NC |
1974 | |
1975 | PERL_ARGS_ASSERT_MAGIC_SETDBLINE; | |
1976 | ||
089b5c60 NC |
1977 | /* The magic ptr/len for the debugger's hash should always be an SV. */ |
1978 | if (UNLIKELY(mg->mg_len != HEf_SVKEY)) { | |
1979 | Perl_croak(aTHX_ "panic: magic_setdbline len=%"IVdf", ptr='%s'", | |
7b0eb0b8 | 1980 | (IV)mg->mg_len, mg->mg_ptr); |
089b5c60 NC |
1981 | } |
1982 | ||
1983 | /* Use sv_2iv instead of SvIV() as the former generates smaller code, and | |
1984 | setting/clearing debugger breakpoints is not a hot path. */ | |
43e4250a FC |
1985 | svp = av_fetch(MUTABLE_AV(mg->mg_obj), |
1986 | sv_2iv(MUTABLE_SV((mg)->mg_ptr)), FALSE); | |
089b5c60 | 1987 | |
8772537c | 1988 | if (svp && SvIOKp(*svp)) { |
88df5f01 FC |
1989 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); |
1990 | if (o) { | |
1991 | #ifdef PERL_DEBUG_READONLY_OPS | |
1992 | Slab_to_rw(OpSLAB(o)); | |
1993 | #endif | |
1994 | /* set or clear breakpoint in the relevant control op */ | |
089b5c60 | 1995 | if (SvTRUE(sv)) |
88df5f01 | 1996 | o->op_flags |= OPf_SPECIAL; |
8772537c | 1997 | else |
88df5f01 FC |
1998 | o->op_flags &= ~OPf_SPECIAL; |
1999 | #ifdef PERL_DEBUG_READONLY_OPS | |
2000 | Slab_to_ro(OpSLAB(o)); | |
2001 | #endif | |
8772537c | 2002 | } |
5df8de69 | 2003 | } |
79072805 LW |
2004 | return 0; |
2005 | } | |
2006 | ||
2007 | int | |
8772537c | 2008 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 2009 | { |
502c6561 | 2010 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2011 | |
2012 | PERL_ARGS_ASSERT_MAGIC_GETARYLEN; | |
2013 | ||
83bf042f | 2014 | if (obj) { |
e1dccc0d | 2015 | sv_setiv(sv, AvFILL(obj)); |
83bf042f | 2016 | } else { |
d4a823b3 | 2017 | sv_setsv(sv, NULL); |
83bf042f | 2018 | } |
79072805 LW |
2019 | return 0; |
2020 | } | |
2021 | ||
2022 | int | |
864dbfa3 | 2023 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2024 | { |
502c6561 | 2025 | AV * const obj = MUTABLE_AV(mg->mg_obj); |
7918f24d NC |
2026 | |
2027 | PERL_ARGS_ASSERT_MAGIC_SETARYLEN; | |
2028 | ||
83bf042f | 2029 | if (obj) { |
e1dccc0d | 2030 | av_fill(obj, SvIV(sv)); |
83bf042f | 2031 | } else { |
a2a5de95 NC |
2032 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
2033 | "Attempt to set length of freed array"); | |
83bf042f NC |
2034 | } |
2035 | return 0; | |
2036 | } | |
2037 | ||
2038 | int | |
83f29afa VP |
2039 | Perl_magic_cleararylen_p(pTHX_ SV *sv, MAGIC *mg) |
2040 | { | |
83f29afa VP |
2041 | PERL_ARGS_ASSERT_MAGIC_CLEARARYLEN_P; |
2042 | PERL_UNUSED_ARG(sv); | |
dc3bf405 | 2043 | PERL_UNUSED_CONTEXT; |
83f29afa VP |
2044 | |
2045 | /* Reset the iterator when the array is cleared */ | |
3565fbf3 VP |
2046 | #if IVSIZE == I32SIZE |
2047 | *((IV *) &(mg->mg_len)) = 0; | |
2048 | #else | |
83f29afa VP |
2049 | if (mg->mg_ptr) |
2050 | *((IV *) mg->mg_ptr) = 0; | |
3565fbf3 | 2051 | #endif |
83f29afa VP |
2052 | |
2053 | return 0; | |
2054 | } | |
2055 | ||
2056 | int | |
83bf042f NC |
2057 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) |
2058 | { | |
7918f24d | 2059 | PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P; |
53c1dcc0 | 2060 | PERL_UNUSED_ARG(sv); |
7918f24d | 2061 | |
94f3782b DM |
2062 | /* during global destruction, mg_obj may already have been freed */ |
2063 | if (PL_in_clean_all) | |
1ea47f64 | 2064 | return 0; |
94f3782b | 2065 | |
83bf042f NC |
2066 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
2067 | ||
2068 | if (mg) { | |
2069 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
2070 | reference. Hence the we (the array) are about to go away with it | |
2071 | still pointing at us. Clear its pointer, else it would be pointing | |
2072 | at free memory. See the comment in sv_magic about reference loops, | |
2073 | and why it can't own a reference to us. */ | |
2074 | mg->mg_obj = 0; | |
2075 | } | |
a0d0e21e LW |
2076 | return 0; |
2077 | } | |
2078 | ||
2079 | int | |
864dbfa3 | 2080 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2081 | { |
16eb5365 | 2082 | SV* const lsv = LvTARG(sv); |
96c2a8ff | 2083 | MAGIC * const found = mg_find_mglob(lsv); |
7918f24d NC |
2084 | |
2085 | PERL_ARGS_ASSERT_MAGIC_GETPOS; | |
16eb5365 | 2086 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2087 | |
6174b39a FC |
2088 | if (found && found->mg_len != -1) { |
2089 | STRLEN i = found->mg_len; | |
25fdce4a | 2090 | if (found->mg_flags & MGf_BYTES && DO_UTF8(lsv)) |
6174b39a FC |
2091 | i = sv_pos_b2u_flags(lsv, i, SV_GMAGIC|SV_CONST_RETURN); |
2092 | sv_setuv(sv, i); | |
a0d0e21e | 2093 | return 0; |
a0d0e21e | 2094 | } |
35995e5c | 2095 | sv_setsv(sv,NULL); |
a0d0e21e LW |
2096 | return 0; |
2097 | } | |
2098 | ||
2099 | int | |
864dbfa3 | 2100 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 2101 | { |
16eb5365 | 2102 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
2103 | SSize_t pos; |
2104 | STRLEN len; | |
c00206c8 | 2105 | STRLEN ulen = 0; |
53d44271 | 2106 | MAGIC* found; |
aec43834 | 2107 | const char *s; |
a0d0e21e | 2108 | |
7918f24d | 2109 | PERL_ARGS_ASSERT_MAGIC_SETPOS; |
16eb5365 | 2110 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 2111 | |
96c2a8ff | 2112 | found = mg_find_mglob(lsv); |
3881461a | 2113 | if (!found) { |
a0d0e21e LW |
2114 | if (!SvOK(sv)) |
2115 | return 0; | |
96c2a8ff | 2116 | found = sv_magicext_mglob(lsv); |
a0d0e21e LW |
2117 | } |
2118 | else if (!SvOK(sv)) { | |
3881461a | 2119 | found->mg_len = -1; |
a0d0e21e LW |
2120 | return 0; |
2121 | } | |
aec43834 | 2122 | s = SvPV_const(lsv, len); |
a0d0e21e | 2123 | |
e1dccc0d | 2124 | pos = SvIV(sv); |
a0ed51b3 | 2125 | |
7e2040f0 | 2126 | if (DO_UTF8(lsv)) { |
aec43834 | 2127 | ulen = sv_or_pv_len_utf8(lsv, s, len); |
a0ed51b3 LW |
2128 | if (ulen) |
2129 | len = ulen; | |
a0ed51b3 LW |
2130 | } |
2131 | ||
a0d0e21e LW |
2132 | if (pos < 0) { |
2133 | pos += len; | |
2134 | if (pos < 0) | |
2135 | pos = 0; | |
2136 | } | |
eb160463 | 2137 | else if (pos > (SSize_t)len) |
a0d0e21e | 2138 | pos = len; |
a0ed51b3 | 2139 | |
3881461a | 2140 | found->mg_len = pos; |
25fdce4a | 2141 | found->mg_flags &= ~(MGf_MINMATCH|MGf_BYTES); |
a0d0e21e | 2142 | |
79072805 LW |
2143 | return 0; |
2144 | } | |
2145 | ||
2146 | int | |
864dbfa3 | 2147 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
2148 | { |
2149 | STRLEN len; | |
35a4481c | 2150 | SV * const lsv = LvTARG(sv); |
b83604b4 | 2151 | const char * const tmps = SvPV_const(lsv,len); |
777f7c56 EB |
2152 | STRLEN offs = LvTARGOFF(sv); |
2153 | STRLEN rem = LvTARGLEN(sv); | |
83f78d1a FC |
2154 | const bool negoff = LvFLAGS(sv) & 1; |
2155 | const bool negrem = LvFLAGS(sv) & 2; | |
7918f24d NC |
2156 | |
2157 | PERL_ARGS_ASSERT_MAGIC_GETSUBSTR; | |
8772537c | 2158 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2159 | |
83f78d1a | 2160 | if (!translate_substr_offsets( |
4ddea69a | 2161 | SvUTF8(lsv) ? sv_or_pv_len_utf8(lsv, tmps, len) : len, |
83f78d1a FC |
2162 | negoff ? -(IV)offs : (IV)offs, !negoff, |
2163 | negrem ? -(IV)rem : (IV)rem, !negrem, &offs, &rem | |
2164 | )) { | |
2165 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string"); | |
2166 | sv_setsv_nomg(sv, &PL_sv_undef); | |
2167 | return 0; | |
2168 | } | |
2169 | ||
9aa983d2 | 2170 | if (SvUTF8(lsv)) |
4ddea69a | 2171 | offs = sv_or_pv_pos_u2b(lsv, tmps, offs, &rem); |
1c900557 | 2172 | sv_setpvn(sv, tmps + offs, rem); |
9aa983d2 | 2173 | if (SvUTF8(lsv)) |
2ef4b674 | 2174 | SvUTF8_on(sv); |
6ff81951 GS |
2175 | return 0; |
2176 | } | |
2177 | ||
2178 | int | |
864dbfa3 | 2179 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2180 | { |
83f78d1a | 2181 | STRLEN len, lsv_len, oldtarglen, newtarglen; |
5fcbf73d | 2182 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 2183 | SV * const lsv = LvTARG(sv); |
777f7c56 EB |
2184 | STRLEN lvoff = LvTARGOFF(sv); |
2185 | STRLEN lvlen = LvTARGLEN(sv); | |
83f78d1a FC |
2186 | const bool negoff = LvFLAGS(sv) & 1; |
2187 | const bool neglen = LvFLAGS(sv) & 2; | |
7918f24d NC |
2188 | |
2189 | PERL_ARGS_ASSERT_MAGIC_SETSUBSTR; | |
8772537c | 2190 | PERL_UNUSED_ARG(mg); |
075a4a2b | 2191 | |
a74fb2cd FC |
2192 | SvGETMAGIC(lsv); |
2193 | if (SvROK(lsv)) | |
2194 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), | |
2195 | "Attempt to use reference as lvalue in substr" | |
2196 | ); | |
fc061ed8 FC |
2197 | SvPV_force_nomg(lsv,lsv_len); |
2198 | if (SvUTF8(lsv)) lsv_len = sv_len_utf8_nomg(lsv); | |
83f78d1a FC |
2199 | if (!translate_substr_offsets( |
2200 | lsv_len, | |
2201 | negoff ? -(IV)lvoff : (IV)lvoff, !negoff, | |
2202 | neglen ? -(IV)lvlen : (IV)lvlen, !neglen, &lvoff, &lvlen | |
2203 | )) | |
2204 | Perl_croak(aTHX_ "substr outside of string"); | |
2205 | oldtarglen = lvlen; | |
1aa99e6b | 2206 | if (DO_UTF8(sv)) { |
73a087f0 | 2207 | sv_utf8_upgrade_nomg(lsv); |
d931b1be | 2208 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
a74fb2cd | 2209 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
7a385470 | 2210 | newtarglen = sv_or_pv_len_utf8(sv, tmps, len); |
9aa983d2 JH |
2211 | SvUTF8_on(lsv); |
2212 | } | |
0d336106 | 2213 | else if (SvUTF8(lsv)) { |
5fcbf73d | 2214 | const char *utf8; |
d931b1be | 2215 | lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN); |
83f78d1a | 2216 | newtarglen = len; |
5fcbf73d | 2217 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
a74fb2cd | 2218 | sv_insert_flags(lsv, lvoff, lvlen, utf8, len, 0); |
5fcbf73d | 2219 | Safefree(utf8); |
1aa99e6b | 2220 | } |
b76f3ce2 | 2221 | else { |
a74fb2cd | 2222 | sv_insert_flags(lsv, lvoff, lvlen, tmps, len, 0); |
83f78d1a | 2223 | newtarglen = len; |
b76f3ce2 | 2224 | } |
83f78d1a FC |
2225 | if (!neglen) LvTARGLEN(sv) = newtarglen; |
2226 | if (negoff) LvTARGOFF(sv) += newtarglen - oldtarglen; | |
b76f3ce2 | 2227 | |
79072805 LW |
2228 | return 0; |
2229 | } | |
2230 | ||
2231 | int | |
864dbfa3 | 2232 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2233 | { |
7918f24d | 2234 | PERL_ARGS_ASSERT_MAGIC_GETTAINT; |
8772537c | 2235 | PERL_UNUSED_ARG(sv); |
9a9b5ec9 DM |
2236 | #ifdef NO_TAINT_SUPPORT |
2237 | PERL_UNUSED_ARG(mg); | |
2238 | #endif | |
7918f24d | 2239 | |
27cc343c | 2240 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2241 | return 0; |
2242 | } | |
2243 | ||
2244 | int | |
864dbfa3 | 2245 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2246 | { |
7918f24d | 2247 | PERL_ARGS_ASSERT_MAGIC_SETTAINT; |
8772537c | 2248 | PERL_UNUSED_ARG(sv); |
7918f24d | 2249 | |
b01e650a | 2250 | /* update taint status */ |
284167a5 | 2251 | if (TAINT_get) |
b01e650a DM |
2252 | mg->mg_len |= 1; |
2253 | else | |
2254 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2255 | return 0; |
2256 | } | |
2257 | ||
2258 | int | |
864dbfa3 | 2259 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2260 | { |
35a4481c | 2261 | SV * const lsv = LvTARG(sv); |
7918f24d NC |
2262 | |
2263 | PERL_ARGS_ASSERT_MAGIC_GETVEC; | |
8772537c | 2264 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2265 | |
2e9e14dd | 2266 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 | 2267 | |
6ff81951 GS |
2268 | return 0; |
2269 | } | |
2270 | ||
2271 | int | |
864dbfa3 | 2272 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2273 | { |
7918f24d | 2274 | PERL_ARGS_ASSERT_MAGIC_SETVEC; |
8772537c | 2275 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2276 | do_vecset(sv); /* XXX slurp this routine */ |
2277 | return 0; | |
2278 | } | |
2279 | ||
13733cde FC |
2280 | SV * |
2281 | Perl_defelem_target(pTHX_ SV *sv, MAGIC *mg) | |
5f05dabc | 2282 | { |
a0714e2c | 2283 | SV *targ = NULL; |
13733cde FC |
2284 | PERL_ARGS_ASSERT_DEFELEM_TARGET; |
2285 | if (!mg) mg = mg_find(sv, PERL_MAGIC_defelem); | |
2286 | assert(mg); | |
5f05dabc | 2287 | if (LvTARGLEN(sv)) { |
68dc0745 | 2288 | if (mg->mg_obj) { |
8772537c | 2289 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2290 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, FALSE, 0); |
6d822dc4 MS |
2291 | if (he) |
2292 | targ = HeVAL(he); | |
68dc0745 | 2293 | } |
bbfdc870 | 2294 | else if (LvSTARGOFF(sv) >= 0) { |
502c6561 | 2295 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
bbfdc870 | 2296 | if (LvSTARGOFF(sv) <= AvFILL(av)) |
ca58dfd9 FC |
2297 | { |
2298 | if (SvRMAGICAL(av)) { | |
2299 | SV * const * const svp = av_fetch(av, LvSTARGOFF(sv), 0); | |
2300 | targ = svp ? *svp : NULL; | |
2301 | } | |
2302 | else | |
bbfdc870 | 2303 | targ = AvARRAY(av)[LvSTARGOFF(sv)]; |
ca58dfd9 | 2304 | } |
68dc0745 | 2305 | } |
46da273f | 2306 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2307 | /* somebody else defined it for us */ |
2308 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2309 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2310 | LvTARGLEN(sv) = 0; |
2311 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2312 | mg->mg_obj = NULL; |
68dc0745 | 2313 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2314 | } | |
13733cde | 2315 | return targ; |
5f05dabc | 2316 | } |
71be2cbc | 2317 | else |
13733cde FC |
2318 | return LvTARG(sv); |
2319 | } | |
2320 | ||
2321 | int | |
2322 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) | |
2323 | { | |
2324 | PERL_ARGS_ASSERT_MAGIC_GETDEFELEM; | |
2325 | ||
2326 | sv_setsv(sv, defelem_target(sv, mg)); | |
71be2cbc | 2327 | return 0; |
2328 | } | |
2329 | ||
2330 | int | |
864dbfa3 | 2331 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2332 | { |
7918f24d | 2333 | PERL_ARGS_ASSERT_MAGIC_SETDEFELEM; |
8772537c | 2334 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2335 | if (LvTARGLEN(sv)) |
68dc0745 | 2336 | vivify_defelem(sv); |
2337 | if (LvTARG(sv)) { | |
5f05dabc | 2338 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2339 | SvSETMAGIC(LvTARG(sv)); |
2340 | } | |
5f05dabc | 2341 | return 0; |
2342 | } | |
2343 | ||
71be2cbc | 2344 | void |
864dbfa3 | 2345 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2346 | { |
74e13ce4 | 2347 | MAGIC *mg; |
a0714e2c | 2348 | SV *value = NULL; |
71be2cbc | 2349 | |
7918f24d NC |
2350 | PERL_ARGS_ASSERT_VIVIFY_DEFELEM; |
2351 | ||
14befaf4 | 2352 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2353 | return; |
68dc0745 | 2354 | if (mg->mg_obj) { |
8772537c | 2355 | SV * const ahv = LvTARG(sv); |
85fbaab2 | 2356 | HE * const he = hv_fetch_ent(MUTABLE_HV(ahv), mg->mg_obj, TRUE, 0); |
6d822dc4 MS |
2357 | if (he) |
2358 | value = HeVAL(he); | |
3280af22 | 2359 | if (!value || value == &PL_sv_undef) |
be2597df | 2360 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2361 | } |
bbfdc870 FC |
2362 | else if (LvSTARGOFF(sv) < 0) |
2363 | Perl_croak(aTHX_ PL_no_aelem, LvSTARGOFF(sv)); | |
68dc0745 | 2364 | else { |
502c6561 | 2365 | AV *const av = MUTABLE_AV(LvTARG(sv)); |
bbfdc870 | 2366 | if ((I32)LvTARGLEN(sv) < 0 && LvSTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2367 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2368 | else { |
bbfdc870 | 2369 | SV* const * const svp = av_fetch(av, LvSTARGOFF(sv), TRUE); |
031c6d82 | 2370 | if (!svp || !(value = *svp)) |
bbfdc870 | 2371 | Perl_croak(aTHX_ PL_no_aelem, LvSTARGOFF(sv)); |
68dc0745 | 2372 | } |
2373 | } | |
b37c2d43 | 2374 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2375 | SvREFCNT_dec(LvTARG(sv)); |
2376 | LvTARG(sv) = value; | |
71be2cbc | 2377 | LvTARGLEN(sv) = 0; |
68dc0745 | 2378 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2379 | mg->mg_obj = NULL; |
68dc0745 | 2380 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2381 | } |
2382 | ||
2383 | int | |
864dbfa3 | 2384 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2385 | { |
7918f24d | 2386 | PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS; |
5648c0ae DM |
2387 | Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj)); |
2388 | return 0; | |
810b8aa5 GS |
2389 | } |
2390 | ||
2391 | int | |
864dbfa3 | 2392 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2393 | { |
7918f24d | 2394 | PERL_ARGS_ASSERT_MAGIC_SETMGLOB; |
96a5add6 | 2395 | PERL_UNUSED_CONTEXT; |
0177730e | 2396 | PERL_UNUSED_ARG(sv); |
565764a8 | 2397 | mg->mg_len = -1; |
93a17b20 LW |
2398 | return 0; |
2399 | } | |
2400 | ||
2401 | int | |
864dbfa3 | 2402 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2403 | { |
35a4481c | 2404 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 | 2405 | |
7918f24d NC |
2406 | PERL_ARGS_ASSERT_MAGIC_SETUVAR; |
2407 | ||
79072805 | 2408 | if (uf && uf->uf_set) |
24f81a43 | 2409 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2410 | return 0; |
2411 | } | |
2412 | ||
c277df42 | 2413 | int |
faf82a0b AE |
2414 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2415 | { | |
488344d2 | 2416 | const char type = mg->mg_type; |
7918f24d NC |
2417 | |
2418 | PERL_ARGS_ASSERT_MAGIC_SETREGEXP; | |
2419 | ||
488344d2 NC |
2420 | if (type == PERL_MAGIC_qr) { |
2421 | } else if (type == PERL_MAGIC_bm) { | |
2422 | SvTAIL_off(sv); | |
2423 | SvVALID_off(sv); | |
2424 | } else { | |
2425 | assert(type == PERL_MAGIC_fm); | |
488344d2 NC |
2426 | } |
2427 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2428 | } |
2429 | ||
7a4c00b4 | 2430 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2431 | int |
864dbfa3 | 2432 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2433 | { |
7918f24d NC |
2434 | PERL_ARGS_ASSERT_MAGIC_SETCOLLXFRM; |
2435 | ||
bbce6d69 | 2436 | /* |
838b5b74 | 2437 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2438 | * and vanished with a faint plop. |
2439 | */ | |
96a5add6 | 2440 | PERL_UNUSED_CONTEXT; |
8772537c | 2441 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2442 | if (mg->mg_ptr) { |
2443 | Safefree(mg->mg_ptr); | |
2444 | mg->mg_ptr = NULL; | |
565764a8 | 2445 | mg->mg_len = -1; |
7a4c00b4 | 2446 | } |
bbce6d69 | 2447 | return 0; |
2448 | } | |
7a4c00b4 | 2449 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2450 | |
7e8c5dac HS |
2451 | /* Just clear the UTF-8 cache data. */ |
2452 | int | |
2453 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2454 | { | |
7918f24d | 2455 | PERL_ARGS_ASSERT_MAGIC_SETUTF8; |
96a5add6 | 2456 | PERL_UNUSED_CONTEXT; |
8772537c | 2457 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2458 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2459 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2460 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2461 | return 0; | |
2462 | } | |
2463 | ||
bbce6d69 | 2464 | int |
864dbfa3 | 2465 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2466 | { |
20b7effb | 2467 | #ifdef USE_ITHREADS |
97aff369 | 2468 | dVAR; |
20b7effb | 2469 | #endif |
eb578fdb KW |
2470 | const char *s; |
2471 | I32 paren; | |
2472 | const REGEXP * rx; | |
79072805 | 2473 | I32 i; |
8990e307 | 2474 | STRLEN len; |
125b9982 | 2475 | MAGIC *tmg; |
2fdbfb4d | 2476 | |
7918f24d NC |
2477 | PERL_ARGS_ASSERT_MAGIC_SET; |
2478 | ||
e91d8259 | 2479 | if (!mg->mg_ptr) { |
960b831f | 2480 | paren = mg->mg_len; |
1e05feb3 | 2481 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
e91d8259 | 2482 | setparen_got_rx: |
2fdbfb4d | 2483 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
1e05feb3 | 2484 | } else { |
2fdbfb4d AB |
2485 | /* Croak with a READONLY error when a numbered match var is |
2486 | * set without a previous pattern match. Unless it's C<local $1> | |
2487 | */ | |
e91d8259 | 2488 | croakparen: |
2fdbfb4d | 2489 | if (!PL_localizing) { |
cb077ed2 | 2490 | Perl_croak_no_modify(); |
2fdbfb4d AB |
2491 | } |
2492 | } | |
e91d8259 NC |
2493 | return 0; |
2494 | } | |
2495 | ||
2496 | switch (*mg->mg_ptr) { | |
748a9306 | 2497 | case '\001': /* ^A */ |
f2da823f FC |
2498 | if (SvOK(sv)) sv_copypv(PL_bodytarget, sv); |
2499 | else SvOK_off(PL_bodytarget); | |
64eff8b7 DM |
2500 | FmLINES(PL_bodytarget) = 0; |
2501 | if (SvPOK(PL_bodytarget)) { | |
2502 | char *s = SvPVX(PL_bodytarget); | |
2503 | while ( ((s = strchr(s, '\n'))) ) { | |
2504 | FmLINES(PL_bodytarget)++; | |
2505 | s++; | |
2506 | } | |
2507 | } | |
125b9982 | 2508 | /* mg_set() has temporarily made sv non-magical */ |
284167a5 | 2509 | if (TAINTING_get) { |
125b9982 NT |
2510 | if ((tmg = mg_find(sv,PERL_MAGIC_taint)) && tmg->mg_len & 1) |
2511 | SvTAINTED_on(PL_bodytarget); | |
2512 | else | |
2513 | SvTAINTED_off(PL_bodytarget); | |
2514 | } | |
748a9306 | 2515 | break; |
49460fe6 | 2516 | case '\003': /* ^C */ |
f2338a2e | 2517 | PL_minus_c = cBOOL(SvIV(sv)); |
49460fe6 NIS |
2518 | break; |
2519 | ||
79072805 | 2520 | case '\004': /* ^D */ |
b4ab917c | 2521 | #ifdef DEBUGGING |
b83604b4 | 2522 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2523 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
a58fb6f9 CS |
2524 | if (DEBUG_x_TEST || DEBUG_B_TEST) |
2525 | dump_all_perl(!DEBUG_B_TEST); | |
b4ab917c | 2526 | #else |
38ab35f8 | 2527 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2528 | #endif |
79072805 | 2529 | break; |
28f23441 | 2530 | case '\005': /* ^E */ |
d0063567 | 2531 | if (*(mg->mg_ptr+1) == '\0') { |
e37778c2 | 2532 | #ifdef VMS |
38ab35f8 | 2533 | set_vaxc_errno(SvIV(sv)); |
e37778c2 NC |
2534 | #else |
2535 | # ifdef WIN32 | |
d0063567 | 2536 | SetLastError( SvIV(sv) ); |
e37778c2 NC |
2537 | # else |
2538 | # ifdef OS2 | |
38ab35f8 | 2539 | os2_setsyserrno(SvIV(sv)); |
e37778c2 | 2540 | # else |
d0063567 | 2541 | /* will anyone ever use this? */ |
38ab35f8 | 2542 | SETERRNO(SvIV(sv), 4); |
048c1ddf IZ |
2543 | # endif |
2544 | # endif | |
22fae026 | 2545 | #endif |
d0063567 DK |
2546 | } |
2547 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
ef8d46e8 | 2548 | SvREFCNT_dec(PL_encoding); |
d0063567 DK |
2549 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
2550 | PL_encoding = newSVsv(sv); | |
2551 | } | |
2552 | else { | |
a0714e2c | 2553 | PL_encoding = NULL; |
d0063567 DK |
2554 | } |
2555 | } | |
2556 | break; | |
79072805 | 2557 | case '\006': /* ^F */ |
38ab35f8 | 2558 | PL_maxsysfd = SvIV(sv); |
79072805 | 2559 | break; |
a0d0e21e | 2560 | case '\010': /* ^H */ |
38ab35f8 | 2561 | PL_hints = SvIV(sv); |
a0d0e21e | 2562 | break; |
9d116dd7 | 2563 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2564 | Safefree(PL_inplace); |
bd61b366 | 2565 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2566 | break; |
d9bad346 FC |
2567 | case '\016': /* ^N */ |
2568 | if (PL_curpm && (rx = PM_GETRE(PL_curpm)) | |
2569 | && (paren = RX_LASTCLOSEPAREN(rx))) goto setparen_got_rx; | |
2570 | goto croakparen; | |
28f23441 | 2571 | case '\017': /* ^O */ |
ac27b0f5 | 2572 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2573 | Safefree(PL_osname); |
bd61b366 | 2574 | PL_osname = NULL; |
3511154c DM |
2575 | if (SvOK(sv)) { |
2576 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2577 | PL_osname = savesvpv(sv); |
3511154c | 2578 | } |
ac27b0f5 NIS |
2579 | } |
2580 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2581 | STRLEN len; |
2582 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2583 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 | 2584 | SV *tmp; |
8b850bd5 NC |
2585 | |
2586 | ||
2587 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
f747ebd6 | 2588 | PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; |
8b850bd5 NC |
2589 | |
2590 | /* Opening for input is more common than opening for output, so | |
2591 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 | 2592 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
f747ebd6 Z |
2593 | SvUTF8(sv)) |
2594 | : newSVpvs_flags("", SvUTF8(sv)); | |
2595 | (void)hv_stores(GvHV(PL_hintgv), "open>", tmp); | |
2596 | mg_set(tmp); | |
8b850bd5 | 2597 | |
f747ebd6 Z |
2598 | tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len, |
2599 | SvUTF8(sv)); | |
2600 | (void)hv_stores(GvHV(PL_hintgv), "open<", tmp); | |
2601 | mg_set(tmp); | |
ac27b0f5 | 2602 | } |
28f23441 | 2603 | break; |
79072805 | 2604 | case '\020': /* ^P */ |
2fdbfb4d AB |
2605 | PL_perldb = SvIV(sv); |
2606 | if (PL_perldb && !PL_DBsingle) | |
2607 | init_debugger(); | |
9b9e0be4 | 2608 | break; |
79072805 | 2609 | case '\024': /* ^T */ |
88e89b8a | 2610 | #ifdef BIG_TIME |
6b88bc9c | 2611 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2612 | #else |
38ab35f8 | 2613 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2614 | #endif |
79072805 | 2615 | break; |
e07ea26a NC |
2616 | case '\025': /* ^UTF8CACHE */ |
2617 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2618 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2619 | } | |
2620 | break; | |
fde18df1 | 2621 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2622 | if (*(mg->mg_ptr+1) == '\0') { |
2623 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2624 | i = SvIV(sv); |
ac27b0f5 | 2625 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2626 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2627 | } |
599cee73 | 2628 | } |
0a378802 | 2629 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2630 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
7e4f0450 FC |
2631 | if (!SvPOK(sv)) { |
2632 | PL_compiling.cop_warnings = pWARN_STD; | |
d775746e GS |
2633 | break; |
2634 | } | |
f4fc7782 | 2635 | { |
b5477537 | 2636 | STRLEN len, i; |
d3a7d8c7 | 2637 | int accumulate = 0 ; |
f4fc7782 | 2638 | int any_fatals = 0 ; |
b83604b4 | 2639 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2640 | for (i = 0 ; i < len ; ++i) { |
2641 | accumulate |= ptr[i] ; | |
2642 | any_fatals |= (ptr[i] & 0xAA) ; | |
2643 | } | |
4243c432 NC |
2644 | if (!accumulate) { |
2645 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2646 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2647 | PL_compiling.cop_warnings = pWARN_NONE; | |
2648 | } | |
72dc9ed5 | 2649 | /* Yuck. I can't see how to abstract this: */ |
2f3f0b56 KW |
2650 | else if (isWARN_on( |
2651 | ((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2652 | WARN_ALL) | |
2653 | && !any_fatals) | |
2654 | { | |
4243c432 NC |
2655 | if (!specialWARN(PL_compiling.cop_warnings)) |
2656 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2657 | PL_compiling.cop_warnings = pWARN_ALL; |
2658 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2659 | } |
d3a7d8c7 | 2660 | else { |
72dc9ed5 NC |
2661 | STRLEN len; |
2662 | const char *const p = SvPV_const(sv, len); | |
2663 | ||
2664 | PL_compiling.cop_warnings | |
8ee4cf24 | 2665 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2666 | p, len); |
2667 | ||
d3a7d8c7 GS |
2668 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2669 | PL_dowarn |= G_WARN_ONCE ; | |
2670 | } | |
f4fc7782 | 2671 | |
d3a7d8c7 | 2672 | } |
4438c4b7 | 2673 | } |
971a9dd3 | 2674 | } |
79072805 LW |
2675 | break; |
2676 | case '.': | |
3280af22 NIS |
2677 | if (PL_localizing) { |
2678 | if (PL_localizing == 1) | |
7766f137 | 2679 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2680 | } |
3280af22 | 2681 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2682 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2683 | break; |
2684 | case '^': | |
acbe1b9d FC |
2685 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2686 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2687 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2688 | break; |
2689 | case '~': | |
acbe1b9d FC |
2690 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2691 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); | |
2692 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); | |
79072805 LW |
2693 | break; |
2694 | case '=': | |
acbe1b9d | 2695 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2696 | break; |
2697 | case '-': | |
acbe1b9d FC |
2698 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
2699 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
099be4f1 | 2700 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 LW |
2701 | break; |
2702 | case '%': | |
acbe1b9d | 2703 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2704 | break; |
2705 | case '|': | |
4b65379b | 2706 | { |
099be4f1 | 2707 | IO * const io = GvIO(PL_defoutgv); |
720f287d AB |
2708 | if(!io) |
2709 | break; | |
38ab35f8 | 2710 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2711 | IoFLAGS(io) &= ~IOf_FLUSH; |
2712 | else { | |
2713 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2714 | PerlIO *ofp = IoOFP(io); | |
2715 | if (ofp) | |
2716 | (void)PerlIO_flush(ofp); | |
2717 | IoFLAGS(io) |= IOf_FLUSH; | |
2718 | } | |
2719 | } | |
79072805 LW |
2720 | } |
2721 | break; | |
79072805 | 2722 | case '/': |
1ab48e3a YO |
2723 | { |
2724 | SV *tmpsv= sv; | |
2725 | if (SvROK(sv)) { | |
2726 | SV *referent= SvRV(sv); | |
2727 | const char *reftype= sv_reftype(referent, 0); | |
2728 | /* XXX: dodgy type check: This leaves me feeling dirty, but the alternative | |
2729 | * is to copy pretty much the entire sv_reftype() into this routine, or to do | |
2730 | * a full string comparison on the return of sv_reftype() both of which | |
2731 | * make me feel worse! NOTE, do not modify this comment without reviewing the | |
2732 | * corresponding comment in sv_reftype(). - Yves */ | |
2733 | if (reftype[0] == 'S' || reftype[0] == 'L') { | |
2734 | IV val= SvIV(referent); | |
2735 | if (val <= 0) { | |
2736 | tmpsv= &PL_sv_undef; | |
2737 | Perl_ck_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
2738 | "Setting $/ to a reference to %s as a form of slurp is deprecated, treating as undef", | |
2739 | SvIV(SvRV(sv)) < 0 ? "a negative integer" : "zero" | |
2740 | ); | |
2741 | } | |
2742 | } else { | |
ee0ba734 | 2743 | /* diag_listed_as: Setting $/ to %s reference is forbidden */ |
a48e4205 FC |
2744 | Perl_croak(aTHX_ "Setting $/ to a%s %s reference is forbidden", |
2745 | *reftype == 'A' ? "n" : "", reftype); | |
1ab48e3a YO |
2746 | } |
2747 | } | |
b3a2acfa | 2748 | SvREFCNT_dec(PL_rs); |
1ab48e3a | 2749 | PL_rs = newSVsv(tmpsv); |
b3a2acfa | 2750 | } |
79072805 LW |
2751 | break; |
2752 | case '\\': | |
ef8d46e8 | 2753 | SvREFCNT_dec(PL_ors_sv); |
6bc2995b | 2754 | if (SvOK(sv)) { |
7889fe52 | 2755 | PL_ors_sv = newSVsv(sv); |
009c130f | 2756 | } |
e3c19b7b | 2757 | else { |
a0714e2c | 2758 | PL_ors_sv = NULL; |
e3c19b7b | 2759 | } |
79072805 | 2760 | break; |
7d69d4a6 FC |
2761 | case '[': |
2762 | if (SvIV(sv) != 0) | |
2763 | Perl_croak(aTHX_ "Assigning non-zero to $[ is no longer possible"); | |
2764 | break; | |
79072805 | 2765 | case '?': |
ff0cee69 | 2766 | #ifdef COMPLEX_STATUS |
6b88bc9c | 2767 | if (PL_localizing == 2) { |
41cb7b2b | 2768 | SvUPGRADE(sv, SVt_PVLV); |
6b88bc9c GS |
2769 | PL_statusvalue = LvTARGOFF(sv); |
2770 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2771 | } |
2772 | else | |
2773 | #endif | |
2774 | #ifdef VMSISH_STATUS | |
2775 | if (VMSISH_STATUS) | |
fb38d079 | 2776 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2777 | else |
2778 | #endif | |
38ab35f8 | 2779 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2780 | break; |
2781 | case '!': | |
93189314 JH |
2782 | { |
2783 | #ifdef VMS | |
2784 | # define PERL_VMS_BANG vaxc$errno | |
2785 | #else | |
2786 | # define PERL_VMS_BANG 0 | |
2787 | #endif | |
27329181 | 2788 | #if defined(WIN32) && ! defined(UNDER_CE) |
c9beaf97 SH |
2789 | SETERRNO(win32_get_errno(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0), |
2790 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); | |
2791 | #else | |
91487cfc | 2792 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 | 2793 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
c9beaf97 | 2794 | #endif |
93189314 | 2795 | } |
79072805 LW |
2796 | break; |
2797 | case '<': | |
985213f2 | 2798 | { |
b469f1e0 | 2799 | /* XXX $< currently silently ignores failures */ |
dfff4baf | 2800 | const Uid_t new_uid = SvUID(sv); |
985213f2 | 2801 | PL_delaymagic_uid = new_uid; |
3280af22 NIS |
2802 | if (PL_delaymagic) { |
2803 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2804 | break; /* don't do magic till later */ |
2805 | } | |
2806 | #ifdef HAS_SETRUID | |
b469f1e0 | 2807 | PERL_UNUSED_RESULT(setruid(new_uid)); |
79072805 LW |
2808 | #else |
2809 | #ifdef HAS_SETREUID | |
b469f1e0 | 2810 | PERL_UNUSED_RESULT(setreuid(new_uid, (Uid_t)-1)); |
748a9306 | 2811 | #else |
85e6fe83 | 2812 | #ifdef HAS_SETRESUID |
b469f1e0 | 2813 | PERL_UNUSED_RESULT(setresuid(new_uid, (Uid_t)-1, (Uid_t)-1)); |
79072805 | 2814 | #else |
985213f2 | 2815 | if (new_uid == PerlProc_geteuid()) { /* special case $< = $> */ |
75870ed3 | 2816 | #ifdef PERL_DARWIN |
2817 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
985213f2 | 2818 | if (new_uid != 0 && PerlProc_getuid() == 0) |
b469f1e0 | 2819 | PERL_UNUSED_RESULT(PerlProc_setuid(0)); |
75870ed3 | 2820 | #endif |
b469f1e0 | 2821 | PERL_UNUSED_RESULT(PerlProc_setuid(new_uid)); |
75870ed3 | 2822 | } else { |
cea2e8a9 | 2823 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2824 | } |
79072805 LW |
2825 | #endif |
2826 | #endif | |
85e6fe83 | 2827 | #endif |
79072805 | 2828 | break; |
985213f2 | 2829 | } |
79072805 | 2830 | case '>': |
985213f2 | 2831 | { |
b469f1e0 | 2832 | /* XXX $> currently silently ignores failures */ |
dfff4baf | 2833 | const Uid_t new_euid = SvUID(sv); |
985213f2 | 2834 | PL_delaymagic_euid = new_euid; |
3280af22 NIS |
2835 | if (PL_delaymagic) { |
2836 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2837 | break; /* don't do magic till later */ |
2838 | } | |
2839 | #ifdef HAS_SETEUID | |
b469f1e0 | 2840 | PERL_UNUSED_RESULT(seteuid(new_euid)); |
79072805 LW |
2841 | #else |
2842 | #ifdef HAS_SETREUID | |
b469f1e0 | 2843 | PERL_UNUSED_RESULT(setreuid((Uid_t)-1, new_euid)); |
85e6fe83 LW |
2844 | #else |
2845 | #ifdef HAS_SETRESUID | |
b469f1e0 | 2846 | PERL_UNUSED_RESULT(setresuid((Uid_t)-1, new_euid, (Uid_t)-1)); |
79072805 | 2847 | #else |
985213f2 | 2848 | if (new_euid == PerlProc_getuid()) /* special case $> = $< */ |
b469f1e0 | 2849 | PERL_UNUSED_RESULT(PerlProc_setuid(new_euid)); |
a0d0e21e | 2850 | else { |
cea2e8a9 | 2851 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2852 | } |
79072805 LW |
2853 | #endif |
2854 | #endif | |
85e6fe83 | 2855 | #endif |
79072805 | 2856 | break; |
985213f2 | 2857 | } |
79072805 | 2858 | case '(': |
985213f2 | 2859 | { |
b469f1e0 | 2860 | /* XXX $( currently silently ignores failures */ |
dfff4baf | 2861 | const Gid_t new_gid = SvGID(sv); |
985213f2 | 2862 | PL_delaymagic_gid = new_gid; |
3280af22 NIS |
2863 | if (PL_delaymagic) { |
2864 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2865 | break; /* don't do magic till later */ |
2866 | } | |
2867 | #ifdef HAS_SETRGID | |
b469f1e0 | 2868 | PERL_UNUSED_RESULT(setrgid(new_gid)); |
79072805 LW |
2869 | #else |
2870 | #ifdef HAS_SETREGID | |
b469f1e0 | 2871 | PERL_UNUSED_RESULT(setregid(new_gid, (Gid_t)-1)); |
85e6fe83 LW |
2872 | #else |
2873 | #ifdef HAS_SETRESGID | |
b469f1e0 | 2874 | PERL_UNUSED_RESULT(setresgid(new_gid, (Gid_t)-1, (Gid_t) -1)); |
79072805 | 2875 | #else |
985213f2 | 2876 | if (new_gid == PerlProc_getegid()) /* special case $( = $) */ |
b469f1e0 | 2877 | PERL_UNUSED_RESULT(PerlProc_setgid(new_gid)); |
748a9306 | 2878 | else { |
cea2e8a9 | 2879 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2880 | } |
79072805 LW |
2881 | #endif |
2882 | #endif | |
85e6fe83 | 2883 | #endif |
79072805 | 2884 | break; |
985213f2 | 2885 | } |
79072805 | 2886 | case ')': |
985213f2 | 2887 | { |
b469f1e0 | 2888 | /* XXX $) currently silently ignores failures */ |
dfff4baf | 2889 | Gid_t new_egid; |
5cd24f17 | 2890 | #ifdef HAS_SETGROUPS |
2891 | { | |
b83604b4 | 2892 | const char *p = SvPV_const(sv, len); |
757f63d8 | 2893 | Groups_t *gary = NULL; |
fb4089e0 | 2894 | #ifdef _SC_NGROUPS_MAX |
2895 | int maxgrp = sysconf(_SC_NGROUPS_MAX); | |
2896 | ||
2897 | if (maxgrp < 0) | |
2898 | maxgrp = NGROUPS; | |
2899 | #else | |
2900 | int maxgrp = NGROUPS; | |
2901 | #endif | |
757f63d8 SP |
2902 | |
2903 | while (isSPACE(*p)) | |
2904 | ++p; | |
dfff4baf | 2905 | new_egid = (Gid_t)Atol(p); |
fb4089e0 | 2906 | for (i = 0; i < maxgrp; ++i) { |
757f63d8 SP |
2907 | while (*p && !isSPACE(*p)) |
2908 | ++p; | |
2909 | while (isSPACE(*p)) | |
2910 | ++p; | |
2911 | if (!*p) | |
2912 | break; | |
2913 | if(!gary) | |
2914 | Newx(gary, i + 1, Groups_t); | |
2915 | else | |
2916 | Renew(gary, i + 1, Groups_t); | |
dfff4baf | 2917 | gary[i] = (Groups_t)Atol(p); |
757f63d8 SP |
2918 | } |
2919 | if (i) | |
b469f1e0 | 2920 | PERL_UNUSED_RESULT(setgroups(i, gary)); |
f5a63d97 | 2921 | Safefree(gary); |
5cd24f17 | 2922 | } |
2923 | #else /* HAS_SETGROUPS */ | |
dfff4baf | 2924 | new_egid = SvGID(sv); |
5cd24f17 | 2925 | #endif /* HAS_SETGROUPS */ |
985213f2 | 2926 | PL_delaymagic_egid = new_egid; |
3280af22 NIS |
2927 | if (PL_delaymagic) { |
2928 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2929 | break; /* don't do magic till later */ |
2930 | } | |
2931 | #ifdef HAS_SETEGID | |
b469f1e0 | 2932 | PERL_UNUSED_RESULT(setegid(new_egid)); |
79072805 LW |
2933 | #else |
2934 | #ifdef HAS_SETREGID | |
b469f1e0 | 2935 | PERL_UNUSED_RESULT(setregid((Gid_t)-1, new_egid)); |
85e6fe83 LW |
2936 | #else |
2937 | #ifdef HAS_SETRESGID | |
b469f1e0 | 2938 | PERL_UNUSED_RESULT(setresgid((Gid_t)-1, new_egid, (Gid_t)-1)); |
79072805 | 2939 | #else |
985213f2 | 2940 | if (new_egid == PerlProc_getgid()) /* special case $) = $( */ |
b469f1e0 | 2941 | PERL_UNUSED_RESULT(PerlProc_setgid(new_egid)); |
748a9306 | 2942 | else { |
cea2e8a9 | 2943 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2944 | } |
79072805 LW |
2945 | #endif |
2946 | #endif | |
85e6fe83 | 2947 | #endif |
79072805 | 2948 | break; |
985213f2 | 2949 | } |
79072805 | 2950 | case ':': |
2d8e6c8d | 2951 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2952 | break; |
9cdac2a2 FC |
2953 | case '$': /* $$ */ |
2954 | /* Store the pid in mg->mg_obj so we can tell when a fork has | |
2955 | occurred. mg->mg_obj points to *$ by default, so clear it. */ | |
2956 | if (isGV(mg->mg_obj)) { | |
2957 | if (mg->mg_flags & MGf_REFCOUNTED) /* probably never true */ | |
2958 | SvREFCNT_dec(mg->mg_obj); | |
2959 | mg->mg_flags |= MGf_REFCOUNTED; | |
2960 | mg->mg_obj = newSViv((IV)PerlProc_getpid()); | |
2961 | } | |
2962 | else sv_setiv(mg->mg_obj, (IV)PerlProc_getpid()); | |
2963 | break; | |
79072805 | 2964 | case '0': |
e2975953 | 2965 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2966 | #ifdef HAS_SETPROCTITLE |
2967 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2968 | * show a string from the process struct and provide | |
2969 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2970 | if (PL_origalen != 1) { |
b83604b4 | 2971 | s = SvPV_const(sv, len); |
98b76f99 | 2972 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2973 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2974 | * but not the "(perl) suffix from the ps(1) |
2975 | * output, because that's what ps(1) shows if the | |
2976 | * argv[] is modified. */ | |
6f2ad931 | 2977 | setproctitle("-%s", s); |
9aad2c0e | 2978 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2979 | /* This doesn't really work if you assume that |
2980 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2981 | * because in ps(1) output the result will be like | |
2982 | * sprintf("perl: %s (perl)", s) | |
2983 | * I guess this is a security feature: | |
2984 | * one (a user process) cannot get rid of the original name. | |
2985 | * --jhi */ | |
2986 | setproctitle("%s", s); | |
2987 | # endif | |
2988 | } | |
9d3968b2 | 2989 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2990 | if (PL_origalen != 1) { |
17aa7f3d | 2991 | union pstun un; |
b83604b4 | 2992 | s = SvPV_const(sv, len); |
6867be6d | 2993 | un.pst_command = (char *)s; |
17aa7f3d JH |
2994 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2995 | } | |
9d3968b2 | 2996 | #else |
2d2af554 GA |
2997 | if (PL_origalen > 1) { |
2998 | /* PL_origalen is set in perl_parse(). */ | |
2999 | s = SvPV_force(sv,len); | |
3000 | if (len >= (STRLEN)PL_origalen-1) { | |
3001 | /* Longer than original, will be truncated. We assume that | |
3002 | * PL_origalen bytes are available. */ | |
3003 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
3004 | } | |
3005 | else { | |
3006 | /* Shorter than original, will be padded. */ | |
235ac35d | 3007 | #ifdef PERL_DARWIN |
60777a0d JH |
3008 | /* Special case for Mac OS X: see [perl #38868] */ |
3009 | const int pad = 0; | |
235ac35d | 3010 | #else |
8a89a4f1 MB |
3011 | /* Is the space counterintuitive? Yes. |
3012 | * (You were expecting \0?) | |
3013 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
3014 | * --jhi */ | |
60777a0d | 3015 | const int pad = ' '; |
235ac35d | 3016 | #endif |
60777a0d JH |
3017 | Copy(s, PL_origargv[0], len, char); |
3018 | PL_origargv[0][len] = 0; | |
3019 | memset(PL_origargv[0] + len + 1, | |
3020 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
3021 | } |
3022 | PL_origargv[0][PL_origalen-1] = 0; | |
3023 | for (i = 1; i < PL_origargc; i++) | |
3024 | PL_origargv[i] = 0; | |
7636ea95 AB |
3025 | #ifdef HAS_PRCTL_SET_NAME |
3026 | /* Set the legacy process name in addition to the POSIX name on Linux */ | |
3027 | if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) { | |
3028 | /* diag_listed_as: SKIPME */ | |
3029 | Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno)); | |
3030 | } | |
3031 | #endif | |
79072805 | 3032 | } |
9d3968b2 | 3033 | #endif |
e2975953 | 3034 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 LW |
3035 | break; |
3036 | } | |
3037 | return 0; | |
3038 | } | |
3039 | ||
3040 | I32 | |
84c7b88c BF |
3041 | Perl_whichsig_sv(pTHX_ SV *sigsv) |
3042 | { | |
3043 | const char *sigpv; | |
3044 | STRLEN siglen; | |
3045 | PERL_ARGS_ASSERT_WHICHSIG_SV; | |
84c7b88c BF |
3046 | sigpv = SvPV_const(sigsv, siglen); |
3047 | return whichsig_pvn(sigpv, siglen); | |
3048 | } | |
3049 | ||
3050 | I32 | |
3051 | Perl_whichsig_pv(pTHX_ const char *sig) | |
3052 | { | |
3053 | PERL_ARGS_ASSERT_WHICHSIG_PV; | |
84c7b88c BF |
3054 | return whichsig_pvn(sig, strlen(sig)); |
3055 | } | |
3056 | ||
3057 | I32 | |
3058 | Perl_whichsig_pvn(pTHX_ const char *sig, STRLEN len) | |
79072805 | 3059 | { |
eb578fdb | 3060 | char* const* sigv; |
7918f24d | 3061 | |
84c7b88c | 3062 | PERL_ARGS_ASSERT_WHICHSIG_PVN; |
96a5add6 | 3063 | PERL_UNUSED_CONTEXT; |
79072805 | 3064 | |
aadb217d | 3065 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
84c7b88c | 3066 | if (strlen(*sigv) == len && memEQ(sig,*sigv, len)) |
aadb217d | 3067 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 | 3068 | #ifdef SIGCLD |
84c7b88c | 3069 | if (memEQs(sig, len, "CHLD")) |
79072805 LW |
3070 | return SIGCLD; |
3071 | #endif | |
3072 | #ifdef SIGCHLD | |
84c7b88c | 3073 | if (memEQs(sig, len, "CLD")) |
79072805 LW |
3074 | return SIGCHLD; |
3075 | #endif | |
7f1236c0 | 3076 | return -1; |
79072805 LW |
3077 | } |
3078 | ||
ecfc5424 | 3079 | Signal_t |
1e82f5a6 | 3080 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b3dbdd48 | 3081 | Perl_sighandler(int sig, siginfo_t *sip, void *uap) |
1e82f5a6 SH |
3082 | #else |
3083 | Perl_sighandler(int sig) | |
3084 | #endif | |
79072805 | 3085 | { |
1018e26f NIS |
3086 | #ifdef PERL_GET_SIG_CONTEXT |
3087 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 3088 | #else |
cea2e8a9 | 3089 | dTHX; |
71d280e3 | 3090 | #endif |
79072805 | 3091 | dSP; |
a0714e2c SS |
3092 | GV *gv = NULL; |
3093 | SV *sv = NULL; | |
8772537c | 3094 | SV * const tSv = PL_Sv; |
601f1833 | 3095 | CV *cv = NULL; |
533c011a | 3096 | OP *myop = PL_op; |
84902520 | 3097 | U32 flags = 0; |
8772537c | 3098 | XPV * const tXpv = PL_Xpv; |
0c4d3b5e | 3099 | I32 old_ss_ix = PL_savestack_ix; |
100c03aa | 3100 | SV *errsv_save = NULL; |
71d280e3 | 3101 | |
84902520 | 3102 | |
727405f8 | 3103 | if (!PL_psig_ptr[sig]) { |
99ef548b | 3104 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
3105 | PL_sig_name[sig]); |
3106 | exit(sig); | |
3107 | } | |
ff0cee69 | 3108 | |
a0d63a7b DM |
3109 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3110 | /* Max number of items pushed there is 3*n or 4. We cannot fix | |
3111 | infinity, so we fix 4 (in fact 5): */ | |
3112 | if (PL_savestack_ix + 15 <= PL_savestack_max) { | |
3113 | flags |= 1; | |
3114 | PL_savestack_ix += 5; /* Protect save in progress. */ | |
3115 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, NULL); | |
3116 | } | |
84902520 | 3117 | } |
84902520 | 3118 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ea726b52 | 3119 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig]))) |
8772537c AL |
3120 | || SvTYPE(cv) != SVt_PVCV) { |
3121 | HV *st; | |
f2c0649b | 3122 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 3123 | } |
84902520 | 3124 | |
a0d0e21e | 3125 | if (!cv || !CvROOT(cv)) { |
a2a5de95 NC |
3126 | Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
3127 | PL_sig_name[sig], (gv ? GvENAME(gv) | |
3128 | : ((cv && CvGV(cv)) | |
3129 | ? GvENAME(CvGV(cv)) | |
3130 | : "__ANON__"))); | |
00d579c5 | 3131 | goto cleanup; |
79072805 LW |
3132 | } |
3133 | ||
0c4d3b5e DM |
3134 | sv = PL_psig_name[sig] |
3135 | ? SvREFCNT_inc_NN(PL_psig_name[sig]) | |
3136 | : newSVpv(PL_sig_name[sig],0); | |
72048cfe | 3137 | flags |= 8; |
0c4d3b5e DM |
3138 | SAVEFREESV(sv); |
3139 | ||
a0d63a7b DM |
3140 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
3141 | /* make sure our assumption about the size of the SAVEs are correct: | |
3142 | * 3 for SAVEDESTRUCTOR_X, 2 for SAVEFREESV */ | |
3143 | assert(old_ss_ix + 2 + ((flags & 1) ? 3+5 : 0) == PL_savestack_ix); | |
3144 | } | |
e336de0d | 3145 | |
e788e7d3 | 3146 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 3147 | PUSHMARK(SP); |
79072805 | 3148 | PUSHs(sv); |
8aad04aa JH |
3149 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
3150 | { | |
3151 | struct sigaction oact; | |
3152 | ||
3153 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
3154 | if (sip) { |
3155 | HV *sih = newHV(); | |
ad64d0ec | 3156 | SV *rv = newRV_noinc(MUTABLE_SV(sih)); |
8aad04aa JH |
3157 | /* The siginfo fields signo, code, errno, pid, uid, |
3158 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
3159 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
3160 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 3161 | #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 |
3162 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
3163 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
3164 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
3165 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
3166 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
3167 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 3168 | #endif |
8aad04aa | 3169 | EXTEND(SP, 2); |
ad64d0ec | 3170 | PUSHs(rv); |
22f1178f | 3171 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 3172 | } |
b4552a27 | 3173 | |
8aad04aa JH |
3174 | } |
3175 | } | |
3176 | #endif | |
79072805 | 3177 | PUTBACK; |
a0d0e21e | 3178 | |
100c03aa JL |
3179 | errsv_save = newSVsv(ERRSV); |
3180 | ||
ad64d0ec | 3181 | call_sv(MUTABLE_SV(cv), G_DISCARD|G_EVAL); |
79072805 | 3182 | |
d3acc0f7 | 3183 | POPSTACK; |
eed484f9 DD |
3184 | { |
3185 | SV * const errsv = ERRSV; | |
3186 | if (SvTRUE_NN(errsv)) { | |
3187 | SvREFCNT_dec(errsv_save); | |
c22d665b | 3188 | #ifndef PERL_MICRO |
1b266415 NIS |
3189 | /* Handler "died", for example to get out of a restart-able read(). |
3190 | * Before we re-do that on its behalf re-enable the signal which was | |
3191 | * blocked by the system when we entered. | |
3192 | */ | |
c22d665b | 3193 | #ifdef HAS_SIGPROCMASK |
d488af49 | 3194 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
eed484f9 | 3195 | if (sip || uap) |
c22d665b | 3196 | #endif |
eed484f9 DD |
3197 | { |
3198 | sigset_t set; | |
3199 | sigemptyset(&set); | |
3200 | sigaddset(&set,sig); | |
3201 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
3202 | } | |
c22d665b | 3203 | #else |
eed484f9 DD |
3204 | /* Not clear if this will work */ |
3205 | (void)rsignal(sig, SIG_IGN); | |
3206 | (void)rsignal(sig, PL_csighandlerp); | |
c22d665b LT |
3207 | #endif |
3208 | #endif /* !PERL_MICRO */ | |
eed484f9 DD |
3209 | die_sv(errsv); |
3210 | } | |
3211 | else { | |
3212 | sv_setsv(errsv, errsv_save); | |
3213 | SvREFCNT_dec(errsv_save); | |
3214 | } | |
100c03aa JL |
3215 | } |
3216 | ||
00d579c5 | 3217 | cleanup: |
0c4d3b5e DM |
3218 | /* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */ |
3219 | PL_savestack_ix = old_ss_ix; | |
72048cfe | 3220 | if (flags & 8) |
2357bae7 | 3221 | SvREFCNT_dec_NN(sv); |
533c011a | 3222 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 3223 | |
3280af22 NIS |
3224 | PL_Sv = tSv; /* Restore global temporaries. */ |
3225 | PL_Xpv = tXpv; | |
53bb94e2 | 3226 | return; |
79072805 | 3227 | } |
4e35701f NIS |
3228 | |
3229 | ||
51371543 | 3230 | static void |
8772537c | 3231 | S_restore_magic(pTHX_ const void *p) |
51371543 | 3232 | { |
8772537c AL |
3233 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
3234 | SV* const sv = mgs->mgs_sv; | |
150b625d | 3235 | bool bumped; |
51371543 GS |
3236 | |
3237 | if (!sv) | |
3238 | return; | |
3239 | ||
4bac9ae4 CS |
3240 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
3241 | SvTEMP_off(sv); /* if it's still magical, this value isn't temporary */ | |
f8c7b90f | 3242 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
3243 | /* While magic was saved (and off) sv_setsv may well have seen |
3244 | this SV as a prime candidate for COW. */ | |
3245 | if (SvIsCOW(sv)) | |
e424a81e | 3246 | sv_force_normal_flags(sv, 0); |
f9701176 | 3247 | #endif |
f9c6fee5 CS |
3248 | if (mgs->mgs_readonly) |
3249 | SvREADONLY_on(sv); | |
3250 | if (mgs->mgs_magical) | |
3251 | SvFLAGS(sv) |= mgs->mgs_magical; | |
51371543 GS |
3252 | else |
3253 | mg_magical(sv); | |
51371543 GS |
3254 | } |
3255 | ||
150b625d | 3256 | bumped = mgs->mgs_bumped; |
51371543 GS |
3257 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
3258 | ||
3259 | /* If we're still on top of the stack, pop us off. (That condition | |
3260 | * will be satisfied if restore_magic was called explicitly, but *not* | |
3261 | * if it's being called via leave_scope.) | |
3262 | * The reason for doing this is that otherwise, things like sv_2cv() | |
3263 | * may leave alloc gunk on the savestack, and some code | |
3264 | * (e.g. sighandler) doesn't expect that... | |
3265 | */ | |
3266 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
3267 | { | |
1be36ce0 NC |
3268 | UV popval = SSPOPUV; |
3269 | assert(popval == SAVEt_DESTRUCTOR_X); | |
51371543 | 3270 | PL_savestack_ix -= 2; |
1be36ce0 NC |
3271 | popval = SSPOPUV; |
3272 | assert((popval & SAVE_MASK) == SAVEt_ALLOC); | |
3273 | PL_savestack_ix -= popval >> SAVE_TIGHT_SHIFT; | |
51371543 | 3274 | } |
150b625d DM |
3275 | if (bumped) { |
3276 | if (SvREFCNT(sv) == 1) { | |
3277 | /* We hold the last reference to this SV, which implies that the | |
3278 | SV was deleted as a side effect of the routines we called. | |
3279 | So artificially keep it alive a bit longer. | |
3280 | We avoid turning on the TEMP flag, which can cause the SV's | |
3281 | buffer to get stolen (and maybe other stuff). */ | |
150b625d | 3282 | sv_2mortal(sv); |
4bac9ae4 | 3283 | SvTEMP_off(sv); |
8985fe98 | 3284 | } |
150b625d | 3285 | else |
2357bae7 | 3286 | SvREFCNT_dec_NN(sv); /* undo the inc in S_save_magic() */ |
8985fe98 | 3287 | } |
51371543 GS |
3288 | } |
3289 | ||
0c4d3b5e DM |
3290 | /* clean up the mess created by Perl_sighandler(). |
3291 | * Note that this is only called during an exit in a signal handler; | |
3292 | * a die is trapped by the call_sv() and the SAVEDESTRUCTOR_X manually | |
9a7f166c | 3293 | * skipped over. */ |
0c4d3b5e | 3294 | |
51371543 | 3295 | static void |
8772537c | 3296 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 3297 | { |
0c4d3b5e | 3298 | PERL_UNUSED_ARG(p); |
7918f24d | 3299 | |
0c4d3b5e | 3300 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
51371543 | 3301 | } |
1018e26f | 3302 | |
66610fdd | 3303 | /* |
b3ca2e83 NC |
3304 | =for apidoc magic_sethint |
3305 | ||
3306 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
3307 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
3308 | anything that would need a deep copy. Maybe we should warn if we find a | |
3309 | reference. | |
b3ca2e83 NC |
3310 | |
3311 | =cut | |
3312 | */ | |
3313 | int | |
3314 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
3315 | { | |
ad64d0ec | 3316 | SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr) |
59cd0e26 | 3317 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 3318 | |
7918f24d NC |
3319 | PERL_ARGS_ASSERT_MAGIC_SETHINT; |
3320 | ||
e6e3e454 NC |
3321 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
3322 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
3323 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
3324 | or take other more complex action. */ | |
3325 | ||
5b9c0671 NC |
3326 | /* Something changed in %^H, so it will need to be restored on scope exit. |
3327 | Doing this here saves a lot of doing it manually in perl code (and | |
3328 | forgetting to do it, and consequent subtle errors. */ | |
3329 | PL_hints |= HINT_LOCALIZE_HH; | |
20439bc7 Z |
3330 | CopHINTHASH_set(&PL_compiling, |
3331 | cophh_store_sv(CopHINTHASH_get(&PL_compiling), key, 0, sv, 0)); | |
b3ca2e83 NC |
3332 | return 0; |
3333 | } | |
3334 | ||
3335 | /* | |
f175cff5 | 3336 | =for apidoc magic_clearhint |
b3ca2e83 | 3337 | |
c28fe1ec NC |
3338 | Triggered by a delete from %^H, records the key to |
3339 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3340 | |
3341 | =cut | |
3342 | */ | |
3343 | int | |
3344 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3345 | { | |
7918f24d | 3346 | PERL_ARGS_ASSERT_MAGIC_CLEARHINT; |
f5a63d97 AL |
3347 | PERL_UNUSED_ARG(sv); |
3348 | ||
5b9c0671 | 3349 | PL_hints |= HINT_LOCALIZE_HH; |
20439bc7 | 3350 | CopHINTHASH_set(&PL_compiling, |
e3352591 FC |
3351 | mg->mg_len == HEf_SVKEY |
3352 | ? cophh_delete_sv(CopHINTHASH_get(&PL_compiling), | |
3353 | MUTABLE_SV(mg->mg_ptr), 0, 0) | |
3354 | : cophh_delete_pvn(CopHINTHASH_get(&PL_compiling), | |
3355 | mg->mg_ptr, mg->mg_len, 0, 0)); | |
b3ca2e83 NC |
3356 | return 0; |
3357 | } | |
3358 | ||
3359 | /* | |
f747ebd6 Z |
3360 | =for apidoc magic_clearhints |
3361 | ||
3362 | Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>. | |
3363 | ||
3364 | =cut | |
3365 | */ | |
3366 | int | |
3367 | Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg) | |
3368 | { | |
3369 | PERL_ARGS_ASSERT_MAGIC_CLEARHINTS; | |
3370 | PERL_UNUSED_ARG(sv); | |
3371 | PERL_UNUSED_ARG(mg); | |
20439bc7 Z |
3372 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
3373 | CopHINTHASH_set(&PL_compiling, cophh_new_empty()); | |
f747ebd6 Z |
3374 | return 0; |
3375 | } | |
3376 | ||
09fb282d FC |
3377 | int |
3378 | Perl_magic_copycallchecker(pTHX_ SV *sv, MAGIC *mg, SV *nsv, | |
3379 | const char *name, I32 namlen) | |
3380 | { | |
3381 | MAGIC *nmg; | |
3382 | ||
3383 | PERL_ARGS_ASSERT_MAGIC_COPYCALLCHECKER; | |
4f8dbb2d | 3384 | PERL_UNUSED_ARG(sv); |
09fb282d FC |
3385 | PERL_UNUSED_ARG(name); |
3386 | PERL_UNUSED_ARG(namlen); | |
3387 | ||
3388 | sv_magic(nsv, &PL_sv_undef, mg->mg_type, NULL, 0); | |
3389 | nmg = mg_find(nsv, mg->mg_type); | |
316ebaf2 | 3390 | assert(nmg); |
09fb282d FC |
3391 | if (nmg->mg_flags & MGf_REFCOUNTED) SvREFCNT_dec(nmg->mg_obj); |
3392 | nmg->mg_ptr = mg->mg_ptr; | |
3393 | nmg->mg_obj = SvREFCNT_inc_simple(mg->mg_obj); | |
3394 | nmg->mg_flags |= MGf_REFCOUNTED; | |
3395 | return 1; | |
3396 | } | |
3397 | ||
f747ebd6 | 3398 | /* |
66610fdd RGS |
3399 | * Local variables: |
3400 | * c-indentation-style: bsd | |
3401 | * c-basic-offset: 4 | |
14d04a33 | 3402 | * indent-tabs-mode: nil |
66610fdd RGS |
3403 | * End: |
3404 | * | |
14d04a33 | 3405 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3406 | */ |