Commit | Line | Data |
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a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
7272f7c1 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 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 | /* | |
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." | |
79072805 LW |
14 | */ |
15 | ||
ccfc67b7 JH |
16 | /* |
17 | =head1 Magical Functions | |
166f8a29 DM |
18 | |
19 | "Magic" is special data attached to SV structures in order to give them | |
20 | "magical" properties. When any Perl code tries to read from, or assign to, | |
21 | an SV marked as magical, it calls the 'get' or 'set' function associated | |
22 | with that SV's magic. A get is called prior to reading an SV, in order to | |
ddfa107c | 23 | give it a chance to update its internal value (get on $. writes the line |
166f8a29 DM |
24 | number of the last read filehandle into to the SV's IV slot), while |
25 | set is called after an SV has been written to, in order to allow it to make | |
ddfa107c | 26 | use of its changed value (set on $/ copies the SV's new value to the |
166f8a29 DM |
27 | PL_rs global variable). |
28 | ||
29 | Magic is implemented as a linked list of MAGIC structures attached to the | |
30 | SV. Each MAGIC struct holds the type of the magic, a pointer to an array | |
31 | of functions that implement the get(), set(), length() etc functions, | |
32 | plus space for some flags and pointers. For example, a tied variable has | |
33 | a MAGIC structure that contains a pointer to the object associated with the | |
34 | tie. | |
35 | ||
ccfc67b7 JH |
36 | */ |
37 | ||
79072805 | 38 | #include "EXTERN.h" |
864dbfa3 | 39 | #define PERL_IN_MG_C |
79072805 LW |
40 | #include "perl.h" |
41 | ||
5cd24f17 | 42 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
b7953727 JH |
43 | # ifdef I_GRP |
44 | # include <grp.h> | |
45 | # endif | |
188ea221 CS |
46 | #endif |
47 | ||
757f63d8 SP |
48 | #if defined(HAS_SETGROUPS) |
49 | # ifndef NGROUPS | |
50 | # define NGROUPS 32 | |
51 | # endif | |
52 | #endif | |
53 | ||
17aa7f3d JH |
54 | #ifdef __hpux |
55 | # include <sys/pstat.h> | |
56 | #endif | |
57 | ||
8aad04aa | 58 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 59 | Signal_t Perl_csighandler(int sig, siginfo_t *, void *); |
8aad04aa | 60 | #else |
e69880a5 | 61 | Signal_t Perl_csighandler(int sig); |
8aad04aa | 62 | #endif |
e69880a5 | 63 | |
9cffb111 OS |
64 | #ifdef __Lynx__ |
65 | /* Missing protos on LynxOS */ | |
66 | void setruid(uid_t id); | |
67 | void seteuid(uid_t id); | |
68 | void setrgid(uid_t id); | |
69 | void setegid(uid_t id); | |
70 | #endif | |
71 | ||
c07a80fd | 72 | /* |
73 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
74 | */ | |
75 | ||
76 | struct magic_state { | |
77 | SV* mgs_sv; | |
78 | U32 mgs_flags; | |
455ece5e | 79 | I32 mgs_ss_ix; |
c07a80fd | 80 | }; |
455ece5e | 81 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
82 | |
83 | STATIC void | |
8fb26106 | 84 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 85 | { |
97aff369 | 86 | dVAR; |
455ece5e | 87 | MGS* mgs; |
c07a80fd | 88 | assert(SvMAGICAL(sv)); |
d8b2590f NC |
89 | /* Turning READONLY off for a copy-on-write scalar (including shared |
90 | hash keys) is a bad idea. */ | |
765f542d | 91 | if (SvIsCOW(sv)) |
9a265e59 | 92 | sv_force_normal_flags(sv, 0); |
c07a80fd | 93 | |
8772537c | 94 | SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
95 | |
96 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 97 | mgs->mgs_sv = sv; |
98 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); | |
455ece5e | 99 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd | 100 | |
101 | SvMAGICAL_off(sv); | |
102 | SvREADONLY_off(sv); | |
085bde85 NC |
103 | if (!(SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK))) { |
104 | /* No public flags are set, so promote any private flags to public. */ | |
105 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; | |
106 | } | |
c07a80fd | 107 | } |
108 | ||
954c1994 GS |
109 | /* |
110 | =for apidoc mg_magical | |
111 | ||
112 | Turns on the magical status of an SV. See C<sv_magic>. | |
113 | ||
114 | =cut | |
115 | */ | |
116 | ||
8990e307 | 117 | void |
864dbfa3 | 118 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 | 119 | { |
e1ec3a88 | 120 | const MAGIC* mg; |
96a5add6 | 121 | PERL_UNUSED_CONTEXT; |
8990e307 | 122 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 123 | const MGVTBL* const vtbl = mg->mg_virtual; |
8990e307 | 124 | if (vtbl) { |
2b260de0 | 125 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 LW |
126 | SvGMAGICAL_on(sv); |
127 | if (vtbl->svt_set) | |
128 | SvSMAGICAL_on(sv); | |
2b260de0 | 129 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) |
8990e307 LW |
130 | SvRMAGICAL_on(sv); |
131 | } | |
132 | } | |
133 | } | |
134 | ||
2767dea0 DM |
135 | |
136 | /* is this container magic (%ENV, $1 etc), or value magic (pos, taint etc)? */ | |
137 | ||
138 | STATIC bool | |
139 | S_is_container_magic(const MAGIC *mg) | |
140 | { | |
141 | switch (mg->mg_type) { | |
142 | case PERL_MAGIC_bm: | |
143 | case PERL_MAGIC_fm: | |
144 | case PERL_MAGIC_regex_global: | |
145 | case PERL_MAGIC_nkeys: | |
146 | #ifdef USE_LOCALE_COLLATE | |
147 | case PERL_MAGIC_collxfrm: | |
148 | #endif | |
149 | case PERL_MAGIC_qr: | |
150 | case PERL_MAGIC_taint: | |
151 | case PERL_MAGIC_vec: | |
152 | case PERL_MAGIC_vstring: | |
153 | case PERL_MAGIC_utf8: | |
154 | case PERL_MAGIC_substr: | |
155 | case PERL_MAGIC_defelem: | |
156 | case PERL_MAGIC_arylen: | |
157 | case PERL_MAGIC_pos: | |
158 | case PERL_MAGIC_backref: | |
159 | case PERL_MAGIC_arylen_p: | |
160 | case PERL_MAGIC_rhash: | |
161 | case PERL_MAGIC_symtab: | |
162 | return 0; | |
163 | default: | |
164 | return 1; | |
165 | } | |
166 | } | |
167 | ||
954c1994 GS |
168 | /* |
169 | =for apidoc mg_get | |
170 | ||
171 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
172 | ||
173 | =cut | |
174 | */ | |
175 | ||
79072805 | 176 | int |
864dbfa3 | 177 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 178 | { |
97aff369 | 179 | dVAR; |
35a4481c | 180 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
fe2774ed | 181 | const bool was_temp = (bool)SvTEMP(sv); |
0723351e | 182 | int have_new = 0; |
ff76feab | 183 | MAGIC *newmg, *head, *cur, *mg; |
20135930 | 184 | /* guard against sv having being freed midway by holding a private |
6683b158 NC |
185 | reference. */ |
186 | ||
187 | /* sv_2mortal has this side effect of turning on the TEMP flag, which can | |
188 | cause the SV's buffer to get stolen (and maybe other stuff). | |
189 | So restore it. | |
190 | */ | |
46da273f | 191 | sv_2mortal(SvREFCNT_inc_simple_NN(sv)); |
6683b158 NC |
192 | if (!was_temp) { |
193 | SvTEMP_off(sv); | |
194 | } | |
195 | ||
455ece5e | 196 | save_magic(mgs_ix, sv); |
463ee0b2 | 197 | |
ff76feab AMS |
198 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
199 | list of magic. svt_get() may delete the current entry, add new | |
200 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
201 | ||
202 | newmg = cur = head = mg = SvMAGIC(sv); | |
203 | while (mg) { | |
35a4481c | 204 | const MGVTBL * const vtbl = mg->mg_virtual; |
ff76feab | 205 | |
2b260de0 | 206 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
316ad4fe | 207 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
b77f7d40 | 208 | |
58f82c5c DM |
209 | /* guard against magic having been deleted - eg FETCH calling |
210 | * untie */ | |
211 | if (!SvMAGIC(sv)) | |
212 | break; | |
b77f7d40 | 213 | |
ff76feab AMS |
214 | /* Don't restore the flags for this entry if it was deleted. */ |
215 | if (mg->mg_flags & MGf_GSKIP) | |
216 | (SSPTR(mgs_ix, MGS *))->mgs_flags = 0; | |
a0d0e21e | 217 | } |
ff76feab AMS |
218 | |
219 | mg = mg->mg_moremagic; | |
220 | ||
0723351e | 221 | if (have_new) { |
ff76feab AMS |
222 | /* Have we finished with the new entries we saw? Start again |
223 | where we left off (unless there are more new entries). */ | |
224 | if (mg == head) { | |
0723351e | 225 | have_new = 0; |
ff76feab AMS |
226 | mg = cur; |
227 | head = newmg; | |
228 | } | |
229 | } | |
230 | ||
231 | /* Were any new entries added? */ | |
0723351e NC |
232 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
233 | have_new = 1; | |
ff76feab AMS |
234 | cur = mg; |
235 | mg = newmg; | |
760ac839 | 236 | } |
79072805 | 237 | } |
463ee0b2 | 238 | |
8772537c | 239 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); |
6683b158 NC |
240 | |
241 | if (SvREFCNT(sv) == 1) { | |
242 | /* We hold the last reference to this SV, which implies that the | |
243 | SV was deleted as a side effect of the routines we called. */ | |
0c34ef67 | 244 | SvOK_off(sv); |
6683b158 | 245 | } |
79072805 LW |
246 | return 0; |
247 | } | |
248 | ||
954c1994 GS |
249 | /* |
250 | =for apidoc mg_set | |
251 | ||
252 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
253 | ||
254 | =cut | |
255 | */ | |
256 | ||
79072805 | 257 | int |
864dbfa3 | 258 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 259 | { |
97aff369 | 260 | dVAR; |
35a4481c | 261 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 262 | MAGIC* mg; |
463ee0b2 LW |
263 | MAGIC* nextmg; |
264 | ||
455ece5e | 265 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
266 | |
267 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 268 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 269 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
270 | if (mg->mg_flags & MGf_GSKIP) { |
271 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
455ece5e | 272 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 273 | } |
e7cbf6c6 DM |
274 | if (PL_localizing == 2 && !S_is_container_magic(mg)) |
275 | continue; | |
2b260de0 | 276 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 | 277 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 | 278 | } |
463ee0b2 | 279 | |
8772537c | 280 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
281 | return 0; |
282 | } | |
283 | ||
954c1994 GS |
284 | /* |
285 | =for apidoc mg_length | |
286 | ||
287 | Report on the SV's length. See C<sv_magic>. | |
288 | ||
289 | =cut | |
290 | */ | |
291 | ||
79072805 | 292 | U32 |
864dbfa3 | 293 | Perl_mg_length(pTHX_ SV *sv) |
79072805 | 294 | { |
97aff369 | 295 | dVAR; |
79072805 | 296 | MAGIC* mg; |
463ee0b2 | 297 | STRLEN len; |
463ee0b2 | 298 | |
79072805 | 299 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 300 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 301 | if (vtbl && vtbl->svt_len) { |
35a4481c | 302 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 303 | save_magic(mgs_ix, sv); |
a0d0e21e | 304 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 305 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c | 306 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
307 | return len; |
308 | } | |
309 | } | |
310 | ||
d0644529 NC |
311 | { |
312 | /* You can't know whether it's UTF-8 until you get the string again... | |
313 | */ | |
10516c54 | 314 | const U8 *s = (U8*)SvPV_const(sv, len); |
d0644529 NC |
315 | |
316 | if (DO_UTF8(sv)) { | |
317 | len = utf8_length(s, s + len); | |
318 | } | |
5636d518 | 319 | } |
463ee0b2 | 320 | return len; |
79072805 LW |
321 | } |
322 | ||
8fb26106 | 323 | I32 |
864dbfa3 | 324 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
325 | { |
326 | MAGIC* mg; | |
ac27b0f5 | 327 | |
93965878 | 328 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 329 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 330 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
331 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
332 | I32 len; | |
455ece5e | 333 | save_magic(mgs_ix, sv); |
93965878 | 334 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 335 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c | 336 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
337 | return len; |
338 | } | |
339 | } | |
340 | ||
341 | switch(SvTYPE(sv)) { | |
342 | case SVt_PVAV: | |
35a4481c | 343 | return AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
344 | case SVt_PVHV: |
345 | /* FIXME */ | |
346 | default: | |
cea2e8a9 | 347 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
348 | break; |
349 | } | |
350 | return 0; | |
351 | } | |
352 | ||
954c1994 GS |
353 | /* |
354 | =for apidoc mg_clear | |
355 | ||
356 | Clear something magical that the SV represents. See C<sv_magic>. | |
357 | ||
358 | =cut | |
359 | */ | |
360 | ||
79072805 | 361 | int |
864dbfa3 | 362 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 363 | { |
35a4481c | 364 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 365 | MAGIC* mg; |
463ee0b2 | 366 | |
455ece5e | 367 | save_magic(mgs_ix, sv); |
463ee0b2 | 368 | |
79072805 | 369 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 370 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 371 | /* omit GSKIP -- never set here */ |
727405f8 | 372 | |
2b260de0 | 373 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 | 374 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 375 | } |
463ee0b2 | 376 | |
8772537c | 377 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
378 | return 0; |
379 | } | |
380 | ||
954c1994 GS |
381 | /* |
382 | =for apidoc mg_find | |
383 | ||
384 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
385 | ||
386 | =cut | |
387 | */ | |
388 | ||
93a17b20 | 389 | MAGIC* |
35a4481c | 390 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 391 | { |
96a5add6 | 392 | PERL_UNUSED_CONTEXT; |
35a4481c AL |
393 | if (sv) { |
394 | MAGIC *mg; | |
395 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
396 | if (mg->mg_type == type) | |
397 | return mg; | |
398 | } | |
93a17b20 | 399 | } |
5f66b61c | 400 | return NULL; |
93a17b20 LW |
401 | } |
402 | ||
954c1994 GS |
403 | /* |
404 | =for apidoc mg_copy | |
405 | ||
406 | Copies the magic from one SV to another. See C<sv_magic>. | |
407 | ||
408 | =cut | |
409 | */ | |
410 | ||
79072805 | 411 | int |
864dbfa3 | 412 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 413 | { |
463ee0b2 | 414 | int count = 0; |
79072805 | 415 | MAGIC* mg; |
463ee0b2 | 416 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 417 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 NIS |
418 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
419 | count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen); | |
420 | } | |
823a54a3 AL |
421 | else { |
422 | const char type = mg->mg_type; | |
1e73acc8 | 423 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
424 | sv_magic(nsv, |
425 | (type == PERL_MAGIC_tied) | |
426 | ? SvTIED_obj(sv, mg) | |
427 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
428 | ? sv | |
429 | : mg->mg_obj, | |
430 | toLOWER(type), key, klen); | |
431 | count++; | |
432 | } | |
79072805 | 433 | } |
79072805 | 434 | } |
463ee0b2 | 435 | return count; |
79072805 LW |
436 | } |
437 | ||
954c1994 | 438 | /* |
0cbee0a4 DM |
439 | =for apidoc mg_localize |
440 | ||
441 | Copy some of the magic from an existing SV to new localized version of | |
442 | that SV. Container magic (eg %ENV, $1, tie) gets copied, value magic | |
443 | doesn't (eg taint, pos). | |
444 | ||
445 | =cut | |
446 | */ | |
447 | ||
448 | void | |
449 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv) | |
450 | { | |
97aff369 | 451 | dVAR; |
0cbee0a4 DM |
452 | MAGIC *mg; |
453 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
2b1b43ea | 454 | const MGVTBL* const vtbl = mg->mg_virtual; |
2767dea0 | 455 | if (!S_is_container_magic(mg)) |
0cbee0a4 | 456 | continue; |
0cbee0a4 | 457 | |
a5063e7c DM |
458 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
459 | (void)CALL_FPTR(vtbl->svt_local)(aTHX_ nsv, mg); | |
460 | else | |
0cbee0a4 DM |
461 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
462 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 463 | |
0cbee0a4 DM |
464 | /* container types should remain read-only across localization */ |
465 | SvFLAGS(nsv) |= SvREADONLY(sv); | |
466 | } | |
467 | ||
468 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
469 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
470 | PL_localizing = 1; | |
471 | SvSETMAGIC(nsv); | |
472 | PL_localizing = 0; | |
473 | } | |
474 | } | |
475 | ||
476 | /* | |
954c1994 GS |
477 | =for apidoc mg_free |
478 | ||
479 | Free any magic storage used by the SV. See C<sv_magic>. | |
480 | ||
481 | =cut | |
482 | */ | |
483 | ||
79072805 | 484 | int |
864dbfa3 | 485 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
486 | { |
487 | MAGIC* mg; | |
488 | MAGIC* moremagic; | |
489 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
35a4481c | 490 | const MGVTBL* const vtbl = mg->mg_virtual; |
79072805 | 491 | moremagic = mg->mg_moremagic; |
2b260de0 | 492 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 493 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 494 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
979acdb5 | 495 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) |
88e89b8a | 496 | Safefree(mg->mg_ptr); |
565764a8 | 497 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 498 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d460ef45 | 499 | } |
b881518d JH |
500 | if (mg->mg_flags & MGf_REFCOUNTED) |
501 | SvREFCNT_dec(mg->mg_obj); | |
79072805 | 502 | Safefree(mg); |
c826f41b | 503 | SvMAGIC_set(sv, moremagic); |
79072805 | 504 | } |
b162af07 | 505 | SvMAGIC_set(sv, NULL); |
79072805 LW |
506 | return 0; |
507 | } | |
508 | ||
79072805 | 509 | #include <signal.h> |
79072805 | 510 | |
942e002e | 511 | U32 |
864dbfa3 | 512 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 513 | { |
97aff369 | 514 | dVAR; |
8772537c | 515 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 516 | |
0bd48802 AL |
517 | if (PL_curpm) { |
518 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
519 | if (rx) { | |
a678b0e4 YO |
520 | if (mg->mg_obj) { /* @+ */ |
521 | /* return the number possible */ | |
07bc277f | 522 | return RX_NPARENS(rx); |
a678b0e4 | 523 | } else { /* @- */ |
07bc277f | 524 | I32 paren = RX_LASTPAREN(rx); |
a678b0e4 YO |
525 | |
526 | /* return the last filled */ | |
f46c4081 | 527 | while ( paren >= 0 |
07bc277f NC |
528 | && (RX_OFFS(rx)[paren].start == -1 |
529 | || RX_OFFS(rx)[paren].end == -1) ) | |
f46c4081 | 530 | paren--; |
a678b0e4 YO |
531 | return (U32)paren; |
532 | } | |
0bd48802 | 533 | } |
8f580fb8 | 534 | } |
ac27b0f5 | 535 | |
942e002e | 536 | return (U32)-1; |
6cef1e77 IZ |
537 | } |
538 | ||
539 | int | |
864dbfa3 | 540 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 541 | { |
97aff369 | 542 | dVAR; |
0bd48802 AL |
543 | if (PL_curpm) { |
544 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
545 | if (rx) { | |
546 | register const I32 paren = mg->mg_len; | |
547 | register I32 s; | |
548 | register I32 t; | |
549 | if (paren < 0) | |
550 | return 0; | |
07bc277f NC |
551 | if (paren <= (I32)RX_NPARENS(rx) && |
552 | (s = RX_OFFS(rx)[paren].start) != -1 && | |
553 | (t = RX_OFFS(rx)[paren].end) != -1) | |
0bd48802 AL |
554 | { |
555 | register I32 i; | |
556 | if (mg->mg_obj) /* @+ */ | |
557 | i = t; | |
558 | else /* @- */ | |
559 | i = s; | |
560 | ||
561 | if (i > 0 && RX_MATCH_UTF8(rx)) { | |
07bc277f | 562 | const char * const b = RX_SUBBEG(rx); |
0bd48802 | 563 | if (b) |
f5a63d97 | 564 | i = utf8_length((U8*)b, (U8*)(b+i)); |
0bd48802 | 565 | } |
727405f8 | 566 | |
0bd48802 | 567 | sv_setiv(sv, i); |
1aa99e6b | 568 | } |
0bd48802 | 569 | } |
6cef1e77 IZ |
570 | } |
571 | return 0; | |
572 | } | |
573 | ||
e4b89193 | 574 | int |
a29d06ed MG |
575 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
576 | { | |
d4c19fe8 AL |
577 | PERL_UNUSED_ARG(sv); |
578 | PERL_UNUSED_ARG(mg); | |
a29d06ed | 579 | Perl_croak(aTHX_ PL_no_modify); |
0dbb1585 | 580 | NORETURN_FUNCTION_END; |
a29d06ed MG |
581 | } |
582 | ||
93a17b20 | 583 | U32 |
864dbfa3 | 584 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 585 | { |
97aff369 | 586 | dVAR; |
93a17b20 | 587 | register I32 paren; |
93a17b20 | 588 | register I32 i; |
2fdbfb4d AB |
589 | register const REGEXP * rx; |
590 | const char * const remaining = mg->mg_ptr + 1; | |
93a17b20 LW |
591 | |
592 | switch (*mg->mg_ptr) { | |
2fdbfb4d AB |
593 | case '\020': |
594 | if (*remaining == '\0') { /* ^P */ | |
595 | break; | |
596 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
597 | goto do_prematch; | |
598 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
599 | goto do_postmatch; | |
600 | } | |
601 | break; | |
602 | case '\015': /* $^MATCH */ | |
603 | if (strEQ(remaining, "ATCH")) { | |
604 | goto do_match; | |
605 | } else { | |
606 | break; | |
607 | } | |
608 | case '`': | |
609 | do_prematch: | |
f1b875a0 | 610 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
611 | goto maybegetparen; |
612 | case '\'': | |
613 | do_postmatch: | |
f1b875a0 | 614 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
615 | goto maybegetparen; |
616 | case '&': | |
617 | do_match: | |
f1b875a0 | 618 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d | 619 | goto maybegetparen; |
93a17b20 | 620 | case '1': case '2': case '3': case '4': |
2fdbfb4d AB |
621 | case '5': case '6': case '7': case '8': case '9': |
622 | paren = atoi(mg->mg_ptr); | |
623 | maybegetparen: | |
aaa362c4 | 624 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
625 | getparen: |
626 | i = CALLREG_NUMBUF_LENGTH((REGEXP * const)rx, sv, paren); | |
cf93c79d | 627 | |
ffc61ed2 | 628 | if (i < 0) |
0844c848 | 629 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 630 | return i; |
2fdbfb4d | 631 | } else { |
235bddc8 | 632 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 633 | report_uninit(sv); |
2fdbfb4d | 634 | return 0; |
93a17b20 | 635 | } |
93a17b20 | 636 | case '+': |
aaa362c4 | 637 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f | 638 | paren = RX_LASTPAREN(rx); |
13f57bf8 CS |
639 | if (paren) |
640 | goto getparen; | |
93a17b20 | 641 | } |
748a9306 | 642 | return 0; |
a01268b5 JH |
643 | case '\016': /* ^N */ |
644 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f | 645 | paren = RX_LASTCLOSEPAREN(rx); |
a01268b5 JH |
646 | if (paren) |
647 | goto getparen; | |
648 | } | |
649 | return 0; | |
93a17b20 LW |
650 | } |
651 | magic_get(sv,mg); | |
2d8e6c8d | 652 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 | 653 | sv_2pv(sv, 0); |
2d8e6c8d | 654 | } |
93a17b20 LW |
655 | if (SvPOK(sv)) |
656 | return SvCUR(sv); | |
657 | return 0; | |
658 | } | |
659 | ||
ad3296c6 | 660 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
661 | if (SvPOK(sv)) { \ |
662 | STRLEN len = SvCUR(sv); \ | |
663 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
664 | while (len > 0 && isSPACE(p[len-1])) \ |
665 | --len; \ | |
666 | SvCUR_set(sv, len); \ | |
667 | p[len] = '\0'; \ | |
668 | } \ | |
ad3296c6 SH |
669 | } STMT_END |
670 | ||
8b850bd5 NC |
671 | void |
672 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
673 | { | |
674 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) | |
675 | sv_setsv(sv, &PL_sv_undef); | |
676 | else { | |
677 | sv_setpvs(sv, ""); | |
678 | SvUTF8_off(sv); | |
679 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
680 | SV *const value = Perl_refcounted_he_fetch(aTHX_ | |
681 | c->cop_hints_hash, | |
682 | 0, "open<", 5, 0, 0); | |
683 | assert(value); | |
684 | sv_catsv(sv, value); | |
685 | } | |
686 | sv_catpvs(sv, "\0"); | |
687 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
688 | SV *const value = Perl_refcounted_he_fetch(aTHX_ | |
689 | c->cop_hints_hash, | |
690 | 0, "open>", 5, 0, 0); | |
691 | assert(value); | |
692 | sv_catsv(sv, value); | |
693 | } | |
694 | } | |
695 | } | |
696 | ||
79072805 | 697 | int |
864dbfa3 | 698 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 699 | { |
27da23d5 | 700 | dVAR; |
79072805 | 701 | register I32 paren; |
35272f84 | 702 | register char *s = NULL; |
d9f97599 | 703 | register REGEXP *rx; |
823a54a3 AL |
704 | const char * const remaining = mg->mg_ptr + 1; |
705 | const char nextchar = *remaining; | |
79072805 LW |
706 | |
707 | switch (*mg->mg_ptr) { | |
748a9306 | 708 | case '\001': /* ^A */ |
3280af22 | 709 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 710 | break; |
e5218da5 | 711 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 712 | if (nextchar == '\0') { |
e5218da5 GA |
713 | sv_setiv(sv, (IV)PL_minus_c); |
714 | } | |
823a54a3 | 715 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
716 | sv_setiv(sv, (IV)STATUS_NATIVE); |
717 | } | |
49460fe6 NIS |
718 | break; |
719 | ||
79072805 | 720 | case '\004': /* ^D */ |
aea4f609 | 721 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 722 | break; |
28f23441 | 723 | case '\005': /* ^E */ |
823a54a3 | 724 | if (nextchar == '\0') { |
4b645107 | 725 | #if defined(MACOS_TRADITIONAL) |
0a378802 JH |
726 | { |
727 | char msg[256]; | |
727405f8 | 728 | |
0a378802 | 729 | sv_setnv(sv,(double)gMacPerl_OSErr); |
727405f8 | 730 | sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : ""); |
0a378802 | 731 | } |
4b645107 | 732 | #elif defined(VMS) |
0a378802 JH |
733 | { |
734 | # include <descrip.h> | |
735 | # include <starlet.h> | |
736 | char msg[255]; | |
737 | $DESCRIPTOR(msgdsc,msg); | |
738 | sv_setnv(sv,(NV) vaxc$errno); | |
739 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
740 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
741 | else | |
c69006e4 | 742 | sv_setpvn(sv,"",0); |
0a378802 | 743 | } |
4b645107 | 744 | #elif defined(OS2) |
0a378802 JH |
745 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
746 | sv_setnv(sv, (NV)errno); | |
747 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
748 | } else { | |
749 | if (errno != errno_isOS2) { | |
823a54a3 | 750 | const int tmp = _syserrno(); |
0a378802 JH |
751 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
752 | Perl_rc = tmp; | |
753 | } | |
754 | sv_setnv(sv, (NV)Perl_rc); | |
755 | sv_setpv(sv, os2error(Perl_rc)); | |
756 | } | |
4b645107 | 757 | #elif defined(WIN32) |
0a378802 | 758 | { |
d4c19fe8 | 759 | const DWORD dwErr = GetLastError(); |
0a378802 | 760 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 761 | if (dwErr) { |
0a378802 JH |
762 | PerlProc_GetOSError(sv, dwErr); |
763 | } | |
764 | else | |
c69006e4 | 765 | sv_setpvn(sv, "", 0); |
0a378802 JH |
766 | SetLastError(dwErr); |
767 | } | |
22fae026 | 768 | #else |
f6c8f21d | 769 | { |
8772537c | 770 | const int saveerrno = errno; |
f6c8f21d | 771 | sv_setnv(sv, (NV)errno); |
666ea192 | 772 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
f6c8f21d RGS |
773 | errno = saveerrno; |
774 | } | |
28f23441 | 775 | #endif |
ad3296c6 | 776 | SvRTRIM(sv); |
0a378802 JH |
777 | SvNOK_on(sv); /* what a wonderful hack! */ |
778 | } | |
823a54a3 | 779 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
780 | sv_setsv(sv, PL_encoding); |
781 | break; | |
79072805 | 782 | case '\006': /* ^F */ |
3280af22 | 783 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 784 | break; |
a0d0e21e | 785 | case '\010': /* ^H */ |
3280af22 | 786 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 787 | break; |
9d116dd7 | 788 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
120f7abe | 789 | sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */ |
79072805 | 790 | break; |
ac27b0f5 | 791 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 792 | if (nextchar == '\0') { |
ac27b0f5 | 793 | sv_setpv(sv, PL_osname); |
3511154c DM |
794 | SvTAINTED_off(sv); |
795 | } | |
823a54a3 | 796 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 797 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 798 | } |
28f23441 | 799 | break; |
cde0cee5 YO |
800 | case '\020': |
801 | if (nextchar == '\0') { /* ^P */ | |
802 | sv_setiv(sv, (IV)PL_perldb); | |
803 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
804 | goto do_prematch_fetch; | |
805 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
806 | goto do_postmatch_fetch; | |
807 | } | |
79072805 | 808 | break; |
fb73857a | 809 | case '\023': /* ^S */ |
823a54a3 | 810 | if (nextchar == '\0') { |
bc177e6b | 811 | if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING) |
0c34ef67 | 812 | SvOK_off(sv); |
3280af22 | 813 | else if (PL_in_eval) |
6dc8a9e4 | 814 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
815 | else |
816 | sv_setiv(sv, 0); | |
d58bf5aa | 817 | } |
fb73857a | 818 | break; |
79072805 | 819 | case '\024': /* ^T */ |
823a54a3 | 820 | if (nextchar == '\0') { |
88e89b8a | 821 | #ifdef BIG_TIME |
7c36658b | 822 | sv_setnv(sv, PL_basetime); |
88e89b8a | 823 | #else |
7c36658b | 824 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 825 | #endif |
7c36658b | 826 | } |
823a54a3 | 827 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
828 | sv_setiv(sv, PL_tainting |
829 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
830 | : 0); | |
7c36658b | 831 | break; |
e07ea26a | 832 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 833 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 834 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 835 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 836 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
837 | else if (strEQ(remaining, "TF8CACHE")) |
838 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
839 | break; |
840 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 841 | if (nextchar == '\0') |
4438c4b7 | 842 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 843 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 844 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 845 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
846 | } |
847 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
666ea192 JH |
848 | sv_setpvn( |
849 | sv, | |
850 | (PL_dowarn & G_WARN_ON) ? WARN_ALLstring : WARN_NONEstring, | |
851 | WARNsize | |
852 | ); | |
013b78e8 | 853 | } |
d3a7d8c7 | 854 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
855 | /* Get the bit mask for $warnings::Bits{all}, because |
856 | * it could have been extended by warnings::register */ | |
823a54a3 | 857 | HV * const bits=get_hv("warnings::Bits", FALSE); |
f5a63d97 AL |
858 | if (bits) { |
859 | SV ** const bits_all = hv_fetchs(bits, "all", FALSE); | |
860 | if (bits_all) | |
861 | sv_setsv(sv, *bits_all); | |
75b6c4ca RGS |
862 | } |
863 | else { | |
864 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
865 | } | |
ac27b0f5 | 866 | } |
4438c4b7 | 867 | else { |
72dc9ed5 NC |
868 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
869 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 870 | } |
d3a7d8c7 | 871 | SvPOK_only(sv); |
4438c4b7 | 872 | } |
79072805 | 873 | break; |
cde0cee5 YO |
874 | case '\015': /* $^MATCH */ |
875 | if (strEQ(remaining, "ATCH")) { | |
79072805 LW |
876 | case '1': case '2': case '3': case '4': |
877 | case '5': case '6': case '7': case '8': case '9': case '&': | |
cde0cee5 YO |
878 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
879 | /* | |
880 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
881 | * XXX Does the new way break anything? | |
882 | */ | |
883 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
2fdbfb4d | 884 | CALLREG_NUMBUF_FETCH(rx,paren,sv); |
cde0cee5 YO |
885 | break; |
886 | } | |
887 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
888 | } |
889 | break; | |
890 | case '+': | |
aaa362c4 | 891 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
07bc277f NC |
892 | if (RX_LASTPAREN(rx)) { |
893 | CALLREG_NUMBUF_FETCH(rx,RX_LASTPAREN(rx),sv); | |
44a2ac75 YO |
894 | break; |
895 | } | |
79072805 | 896 | } |
3280af22 | 897 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 898 | break; |
a01268b5 JH |
899 | case '\016': /* ^N */ |
900 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
07bc277f NC |
901 | if (RX_LASTCLOSEPAREN(rx)) { |
902 | CALLREG_NUMBUF_FETCH(rx,RX_LASTCLOSEPAREN(rx),sv); | |
44a2ac75 YO |
903 | break; |
904 | } | |
905 | ||
a01268b5 JH |
906 | } |
907 | sv_setsv(sv,&PL_sv_undef); | |
908 | break; | |
79072805 | 909 | case '`': |
cde0cee5 | 910 | do_prematch_fetch: |
aaa362c4 | 911 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 912 | CALLREG_NUMBUF_FETCH(rx,-2,sv); |
93b32b6d | 913 | break; |
79072805 | 914 | } |
3280af22 | 915 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
916 | break; |
917 | case '\'': | |
cde0cee5 | 918 | do_postmatch_fetch: |
aaa362c4 | 919 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d | 920 | CALLREG_NUMBUF_FETCH(rx,-1,sv); |
93b32b6d | 921 | break; |
79072805 | 922 | } |
3280af22 | 923 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
924 | break; |
925 | case '.': | |
3280af22 | 926 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 927 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 928 | } |
79072805 LW |
929 | break; |
930 | case '?': | |
809a5acc | 931 | { |
809a5acc | 932 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 933 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
934 | LvTARGOFF(sv) = PL_statusvalue; |
935 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 936 | #endif |
809a5acc | 937 | } |
79072805 LW |
938 | break; |
939 | case '^': | |
0daa599b RGS |
940 | if (GvIOp(PL_defoutgv)) |
941 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); | |
79072805 LW |
942 | if (s) |
943 | sv_setpv(sv,s); | |
944 | else { | |
3280af22 | 945 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
cb421d5e | 946 | sv_catpvs(sv,"_TOP"); |
79072805 LW |
947 | } |
948 | break; | |
949 | case '~': | |
0daa599b RGS |
950 | if (GvIOp(PL_defoutgv)) |
951 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); | |
79072805 | 952 | if (!s) |
3280af22 | 953 | s = GvENAME(PL_defoutgv); |
79072805 LW |
954 | sv_setpv(sv,s); |
955 | break; | |
79072805 | 956 | case '=': |
0daa599b RGS |
957 | if (GvIOp(PL_defoutgv)) |
958 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); | |
79072805 LW |
959 | break; |
960 | case '-': | |
0daa599b RGS |
961 | if (GvIOp(PL_defoutgv)) |
962 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); | |
79072805 LW |
963 | break; |
964 | case '%': | |
0daa599b RGS |
965 | if (GvIOp(PL_defoutgv)) |
966 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); | |
79072805 | 967 | break; |
79072805 LW |
968 | case ':': |
969 | break; | |
970 | case '/': | |
971 | break; | |
972 | case '[': | |
11206fdd | 973 | sv_setiv(sv, (IV)CopARYBASE_get(PL_curcop)); |
79072805 LW |
974 | break; |
975 | case '|': | |
0daa599b RGS |
976 | if (GvIOp(PL_defoutgv)) |
977 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); | |
79072805 LW |
978 | break; |
979 | case ',': | |
79072805 LW |
980 | break; |
981 | case '\\': | |
b2ce0fda | 982 | if (PL_ors_sv) |
f28098ff | 983 | sv_copypv(sv, PL_ors_sv); |
79072805 | 984 | break; |
79072805 | 985 | case '!': |
a5f75d66 | 986 | #ifdef VMS |
65202027 | 987 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 988 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 989 | #else |
88e89b8a | 990 | { |
8772537c | 991 | const int saveerrno = errno; |
65202027 | 992 | sv_setnv(sv, (NV)errno); |
88e89b8a | 993 | #ifdef OS2 |
ed344e4f IZ |
994 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
995 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 996 | else |
a5f75d66 | 997 | #endif |
666ea192 | 998 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 999 | errno = saveerrno; |
1000 | } | |
1001 | #endif | |
ad3296c6 | 1002 | SvRTRIM(sv); |
946ec16e | 1003 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1004 | break; |
1005 | case '<': | |
3280af22 | 1006 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
1007 | break; |
1008 | case '>': | |
3280af22 | 1009 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
1010 | break; |
1011 | case '(': | |
3280af22 | 1012 | sv_setiv(sv, (IV)PL_gid); |
79072805 LW |
1013 | goto add_groups; |
1014 | case ')': | |
3280af22 | 1015 | sv_setiv(sv, (IV)PL_egid); |
79072805 | 1016 | add_groups: |
79072805 | 1017 | #ifdef HAS_GETGROUPS |
79072805 | 1018 | { |
57d7c65e | 1019 | Groups_t *gary = NULL; |
fb45abb2 | 1020 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1021 | Newx(gary, num_groups, Groups_t); |
1022 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1023 | for (i = 0; i < num_groups; i++) |
1024 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1025 | Safefree(gary); |
79072805 | 1026 | } |
155aba94 | 1027 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1028 | #endif |
79072805 | 1029 | break; |
cd39f2b6 | 1030 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
1031 | case '0': |
1032 | break; | |
cd39f2b6 | 1033 | #endif |
79072805 | 1034 | } |
a0d0e21e | 1035 | return 0; |
79072805 LW |
1036 | } |
1037 | ||
1038 | int | |
864dbfa3 | 1039 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1040 | { |
8772537c | 1041 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 LW |
1042 | |
1043 | if (uf && uf->uf_val) | |
24f81a43 | 1044 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1045 | return 0; |
1046 | } | |
1047 | ||
1048 | int | |
864dbfa3 | 1049 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1050 | { |
27da23d5 | 1051 | dVAR; |
9ae3433d | 1052 | STRLEN len = 0, klen; |
666ea192 | 1053 | const char *s = SvOK(sv) ? SvPV_const(sv,len) : ""; |
fabdb6c0 | 1054 | const char * const ptr = MgPV_const(mg,klen); |
88e89b8a | 1055 | my_setenv(ptr, s); |
1e422769 | 1056 | |
a0d0e21e LW |
1057 | #ifdef DYNAMIC_ENV_FETCH |
1058 | /* We just undefd an environment var. Is a replacement */ | |
1059 | /* waiting in the wings? */ | |
1060 | if (!len) { | |
fabdb6c0 AL |
1061 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE); |
1062 | if (valp) | |
4ab59fcc | 1063 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1064 | } |
1065 | #endif | |
1e422769 | 1066 | |
39e571d4 | 1067 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1068 | /* And you'll never guess what the dog had */ |
1069 | /* in its mouth... */ | |
3280af22 | 1070 | if (PL_tainting) { |
1e422769 | 1071 | MgTAINTEDDIR_off(mg); |
1072 | #ifdef VMS | |
5aabfad6 | 1073 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
b8ffc8df | 1074 | char pathbuf[256], eltbuf[256], *cp, *elt; |
c623ac67 | 1075 | Stat_t sbuf; |
1e422769 | 1076 | int i = 0, j = 0; |
1077 | ||
6fca0082 | 1078 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1079 | elt = eltbuf; |
1e422769 | 1080 | do { /* DCL$PATH may be a search list */ |
1081 | while (1) { /* as may dev portion of any element */ | |
1082 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1083 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1084 | cando_by_name(S_IWUSR,0,elt) ) { | |
1085 | MgTAINTEDDIR_on(mg); | |
1086 | return 0; | |
1087 | } | |
1088 | } | |
bd61b366 | 1089 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1090 | *cp = '\0'; |
1091 | if (my_trnlnm(elt, eltbuf, j++)) | |
1092 | elt = eltbuf; | |
1093 | else | |
1094 | break; | |
1095 | } | |
1096 | j = 0; | |
1097 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1098 | } | |
1099 | #endif /* VMS */ | |
5aabfad6 | 1100 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
8772537c | 1101 | const char * const strend = s + len; |
463ee0b2 LW |
1102 | |
1103 | while (s < strend) { | |
96827780 | 1104 | char tmpbuf[256]; |
c623ac67 | 1105 | Stat_t st; |
5f74f29c | 1106 | I32 i; |
f5a63d97 AL |
1107 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1108 | const char path_sep = '|'; | |
1109 | #else | |
1110 | const char path_sep = ':'; | |
1111 | #endif | |
96827780 | 1112 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1113 | s, strend, path_sep, &i); |
463ee0b2 | 1114 | s++; |
bb7a0f54 | 1115 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1116 | #ifdef VMS |
1117 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1118 | #else | |
1119 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1120 | #endif | |
c6ed36e1 | 1121 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1122 | MgTAINTEDDIR_on(mg); |
1e422769 | 1123 | return 0; |
1124 | } | |
463ee0b2 | 1125 | } |
79072805 LW |
1126 | } |
1127 | } | |
39e571d4 | 1128 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1129 | |
79072805 LW |
1130 | return 0; |
1131 | } | |
1132 | ||
1133 | int | |
864dbfa3 | 1134 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1135 | { |
8772537c | 1136 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1137 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1138 | return 0; |
1139 | } | |
1140 | ||
88e89b8a | 1141 | int |
864dbfa3 | 1142 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1143 | { |
97aff369 | 1144 | dVAR; |
65e66c80 | 1145 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1146 | #if defined(VMS) |
cea2e8a9 | 1147 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1148 | #else |
3280af22 | 1149 | if (PL_localizing) { |
fb73857a | 1150 | HE* entry; |
b0269e46 | 1151 | my_clearenv(); |
fb73857a | 1152 | hv_iterinit((HV*)sv); |
155aba94 | 1153 | while ((entry = hv_iternext((HV*)sv))) { |
fb73857a | 1154 | I32 keylen; |
1155 | my_setenv(hv_iterkey(entry, &keylen), | |
b83604b4 | 1156 | SvPV_nolen_const(hv_iterval((HV*)sv, entry))); |
fb73857a | 1157 | } |
1158 | } | |
1159 | #endif | |
1160 | return 0; | |
1161 | } | |
1162 | ||
1163 | int | |
864dbfa3 | 1164 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1165 | { |
27da23d5 | 1166 | dVAR; |
8772537c AL |
1167 | PERL_UNUSED_ARG(sv); |
1168 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1169 | #if defined(VMS) |
1170 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1171 | #else | |
1172 | my_clearenv(); | |
1173 | #endif | |
3e3baf6d | 1174 | return 0; |
66b1d557 HM |
1175 | } |
1176 | ||
64ca3a65 | 1177 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1178 | #ifdef HAS_SIGPROCMASK |
1179 | static void | |
1180 | restore_sigmask(pTHX_ SV *save_sv) | |
1181 | { | |
0bd48802 | 1182 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1183 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1184 | } |
1185 | #endif | |
66b1d557 | 1186 | int |
864dbfa3 | 1187 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1188 | { |
97aff369 | 1189 | dVAR; |
88e89b8a | 1190 | /* Are we fetching a signal entry? */ |
8772537c | 1191 | const I32 i = whichsig(MgPV_nolen_const(mg)); |
e02bfb16 | 1192 | if (i > 0) { |
22c35a8c GS |
1193 | if(PL_psig_ptr[i]) |
1194 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1195 | else { |
46da273f | 1196 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1197 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1198 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1199 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1200 | #endif |
1201 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1202 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1203 | sigstate = SIG_DFL; | |
85b332e2 | 1204 | #endif |
88e89b8a | 1205 | /* cache state so we don't fetch it again */ |
8aad04aa | 1206 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1207 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1208 | else |
3280af22 | 1209 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1210 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1211 | SvTEMP_off(sv); |
1212 | } | |
1213 | } | |
1214 | return 0; | |
1215 | } | |
1216 | int | |
864dbfa3 | 1217 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1218 | { |
2d4fcd5e AJ |
1219 | /* XXX Some of this code was copied from Perl_magic_setsig. A little |
1220 | * refactoring might be in order. | |
1221 | */ | |
27da23d5 | 1222 | dVAR; |
8772537c AL |
1223 | register const char * const s = MgPV_nolen_const(mg); |
1224 | PERL_UNUSED_ARG(sv); | |
2d4fcd5e | 1225 | if (*s == '_') { |
cbbf8932 | 1226 | SV** svp = NULL; |
2d4fcd5e AJ |
1227 | if (strEQ(s,"__DIE__")) |
1228 | svp = &PL_diehook; | |
b274dc4e | 1229 | else if (strEQ(s,"__WARN__") && PL_warnhook != PERL_WARNHOOK_FATAL) |
2d4fcd5e | 1230 | svp = &PL_warnhook; |
27da23d5 | 1231 | if (svp && *svp) { |
b274dc4e | 1232 | SV *const to_dec = *svp; |
cbbf8932 | 1233 | *svp = NULL; |
b274dc4e | 1234 | SvREFCNT_dec(to_dec); |
2d4fcd5e AJ |
1235 | } |
1236 | } | |
1237 | else { | |
2d4fcd5e | 1238 | /* Are we clearing a signal entry? */ |
8772537c | 1239 | const I32 i = whichsig(s); |
e02bfb16 | 1240 | if (i > 0) { |
2d4fcd5e AJ |
1241 | #ifdef HAS_SIGPROCMASK |
1242 | sigset_t set, save; | |
1243 | SV* save_sv; | |
1244 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1245 | sigemptyset(&set); | |
1246 | sigaddset(&set,i); | |
1247 | sigprocmask(SIG_BLOCK, &set, &save); | |
1248 | ENTER; | |
9ff8e806 | 1249 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1250 | SAVEFREESV(save_sv); |
1251 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1252 | #endif | |
1253 | PERL_ASYNC_CHECK(); | |
1254 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) | |
27da23d5 | 1255 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2d4fcd5e AJ |
1256 | #endif |
1257 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
27da23d5 | 1258 | PL_sig_defaulting[i] = 1; |
5c1546dc | 1259 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1260 | #else |
8aad04aa | 1261 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2d4fcd5e AJ |
1262 | #endif |
1263 | if(PL_psig_name[i]) { | |
1264 | SvREFCNT_dec(PL_psig_name[i]); | |
1265 | PL_psig_name[i]=0; | |
1266 | } | |
1267 | if(PL_psig_ptr[i]) { | |
6136c704 | 1268 | SV * const to_dec=PL_psig_ptr[i]; |
2d4fcd5e AJ |
1269 | PL_psig_ptr[i]=0; |
1270 | LEAVE; | |
1271 | SvREFCNT_dec(to_dec); | |
1272 | } | |
1273 | else | |
1274 | LEAVE; | |
1275 | } | |
88e89b8a | 1276 | } |
1277 | return 0; | |
1278 | } | |
3d37d572 | 1279 | |
acd15b85 CB |
1280 | /* |
1281 | * The signal handling nomenclature has gotten a bit confusing since the advent of | |
1282 | * safe signals. S_raise_signal only raises signals by analogy with what the | |
1283 | * underlying system's signal mechanism does. It might be more proper to say that | |
1284 | * it defers signals that have already been raised and caught. | |
1285 | * | |
1286 | * PL_sig_pending and PL_psig_pend likewise do not track signals that are pending | |
1287 | * in the sense of being on the system's signal queue in between raising and delivery. | |
1288 | * They are only pending on Perl's deferral list, i.e., they track deferred signals | |
1289 | * awaiting delivery after the current Perl opcode completes and say nothing about | |
1290 | * signals raised but not yet caught in the underlying signal implementation. | |
1291 | */ | |
1292 | ||
2563cec5 IZ |
1293 | #ifndef SIG_PENDING_DIE_COUNT |
1294 | # define SIG_PENDING_DIE_COUNT 120 | |
1295 | #endif | |
1296 | ||
dd374669 AL |
1297 | static void |
1298 | S_raise_signal(pTHX_ int sig) | |
0a8e0eff | 1299 | { |
97aff369 | 1300 | dVAR; |
0a8e0eff NIS |
1301 | /* Set a flag to say this signal is pending */ |
1302 | PL_psig_pend[sig]++; | |
1303 | /* And one to say _a_ signal is pending */ | |
2563cec5 IZ |
1304 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1305 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1306 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
0a8e0eff NIS |
1307 | } |
1308 | ||
1309 | Signal_t | |
8aad04aa | 1310 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 1311 | Perl_csighandler(int sig, siginfo_t *sip PERL_UNUSED_DECL, void *uap PERL_UNUSED_DECL) |
8aad04aa | 1312 | #else |
0a8e0eff | 1313 | Perl_csighandler(int sig) |
8aad04aa | 1314 | #endif |
0a8e0eff | 1315 | { |
1018e26f NIS |
1316 | #ifdef PERL_GET_SIG_CONTEXT |
1317 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1318 | #else | |
85b332e2 CL |
1319 | dTHX; |
1320 | #endif | |
fe5bfecd | 1321 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
fe5bfecd | 1322 | #endif |
23ada85b | 1323 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1324 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1325 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1326 | #endif |
2e34cc90 | 1327 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1328 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1329 | #ifdef KILL_BY_SIGPRC |
1330 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1331 | #else | |
1332 | exit(1); | |
1333 | #endif | |
1334 | #endif | |
fe5bfecd | 1335 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
fe5bfecd | 1336 | #endif |
853d2c32 RGS |
1337 | if ( |
1338 | #ifdef SIGILL | |
1339 | sig == SIGILL || | |
1340 | #endif | |
1341 | #ifdef SIGBUS | |
1342 | sig == SIGBUS || | |
1343 | #endif | |
1344 | #ifdef SIGSEGV | |
1345 | sig == SIGSEGV || | |
1346 | #endif | |
1347 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 JH |
1348 | /* Call the perl level handler now-- |
1349 | * with risk we may be in malloc() etc. */ | |
6e324d09 | 1350 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1351 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1352 | #else |
1353 | (*PL_sighandlerp)(sig); | |
92807b6d | 1354 | #endif |
4ffa73a3 | 1355 | else |
dd374669 | 1356 | S_raise_signal(aTHX_ sig); |
0a8e0eff NIS |
1357 | } |
1358 | ||
2e34cc90 CL |
1359 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1360 | void | |
1361 | Perl_csighandler_init(void) | |
1362 | { | |
1363 | int sig; | |
27da23d5 | 1364 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1365 | |
1366 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1367 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1368 | dTHX; |
27da23d5 | 1369 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1370 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1371 | #endif |
1372 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1373 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1374 | #endif |
1375 | } | |
27da23d5 | 1376 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1377 | } |
1378 | #endif | |
1379 | ||
0a8e0eff NIS |
1380 | void |
1381 | Perl_despatch_signals(pTHX) | |
1382 | { | |
97aff369 | 1383 | dVAR; |
0a8e0eff NIS |
1384 | int sig; |
1385 | PL_sig_pending = 0; | |
1386 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1387 | if (PL_psig_pend[sig]) { | |
25da4428 JH |
1388 | PERL_BLOCKSIG_ADD(set, sig); |
1389 | PL_psig_pend[sig] = 0; | |
1390 | PERL_BLOCKSIG_BLOCK(set); | |
6e324d09 | 1391 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
80626cf1 | 1392 | (*PL_sighandlerp)(sig, NULL, NULL); |
6e324d09 CB |
1393 | #else |
1394 | (*PL_sighandlerp)(sig); | |
92807b6d | 1395 | #endif |
25da4428 | 1396 | PERL_BLOCKSIG_UNBLOCK(set); |
0a8e0eff NIS |
1397 | } |
1398 | } | |
1399 | } | |
1400 | ||
85e6fe83 | 1401 | int |
864dbfa3 | 1402 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1403 | { |
27da23d5 | 1404 | dVAR; |
79072805 | 1405 | I32 i; |
cbbf8932 | 1406 | SV** svp = NULL; |
2d4fcd5e AJ |
1407 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1408 | * effects (due to closures). We must make sure that the new disposition | |
1409 | * is in place before it is called. | |
1410 | */ | |
cbbf8932 | 1411 | SV* to_dec = NULL; |
e72dc28c | 1412 | STRLEN len; |
2d4fcd5e AJ |
1413 | #ifdef HAS_SIGPROCMASK |
1414 | sigset_t set, save; | |
1415 | SV* save_sv; | |
1416 | #endif | |
a0d0e21e | 1417 | |
d5263905 | 1418 | register const char *s = MgPV_const(mg,len); |
748a9306 LW |
1419 | if (*s == '_') { |
1420 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1421 | svp = &PL_diehook; |
748a9306 | 1422 | else if (strEQ(s,"__WARN__")) |
3280af22 | 1423 | svp = &PL_warnhook; |
748a9306 | 1424 | else |
cea2e8a9 | 1425 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1426 | i = 0; |
4633a7c4 | 1427 | if (*svp) { |
9289f461 RGS |
1428 | if (*svp != PERL_WARNHOOK_FATAL) |
1429 | to_dec = *svp; | |
cbbf8932 | 1430 | *svp = NULL; |
4633a7c4 | 1431 | } |
748a9306 LW |
1432 | } |
1433 | else { | |
1434 | i = whichsig(s); /* ...no, a brick */ | |
86d86cad | 1435 | if (i <= 0) { |
e476b1b5 | 1436 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 1437 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); |
748a9306 LW |
1438 | return 0; |
1439 | } | |
2d4fcd5e AJ |
1440 | #ifdef HAS_SIGPROCMASK |
1441 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1442 | sigemptyset(&set); | |
1443 | sigaddset(&set,i); | |
1444 | sigprocmask(SIG_BLOCK, &set, &save); | |
1445 | ENTER; | |
9ff8e806 | 1446 | save_sv = newSVpvn((char *)(&save), sizeof(sigset_t)); |
2d4fcd5e AJ |
1447 | SAVEFREESV(save_sv); |
1448 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1449 | #endif | |
1450 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1451 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1452 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1453 | #endif |
23ada85b | 1454 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1455 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1456 | #endif |
2e34cc90 | 1457 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1458 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1459 | #endif |
22c35a8c | 1460 | SvREFCNT_dec(PL_psig_name[i]); |
2d4fcd5e | 1461 | to_dec = PL_psig_ptr[i]; |
46da273f | 1462 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1463 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 1464 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 1465 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 1466 | } |
a0d0e21e | 1467 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
2d4fcd5e | 1468 | if (i) { |
5c1546dc | 1469 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1470 | #ifdef HAS_SIGPROCMASK |
1471 | LEAVE; | |
1472 | #endif | |
1473 | } | |
748a9306 | 1474 | else |
b37c2d43 | 1475 | *svp = SvREFCNT_inc_simple_NN(sv); |
2d4fcd5e AJ |
1476 | if(to_dec) |
1477 | SvREFCNT_dec(to_dec); | |
a0d0e21e LW |
1478 | return 0; |
1479 | } | |
baf38871 | 1480 | s = SvOK(sv) ? SvPV_force(sv,len) : "DEFAULT"; |
748a9306 | 1481 | if (strEQ(s,"IGNORE")) { |
85b332e2 | 1482 | if (i) { |
23ada85b | 1483 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1484 | PL_sig_ignoring[i] = 1; |
5c1546dc | 1485 | (void)rsignal(i, PL_csighandlerp); |
85b332e2 | 1486 | #else |
8aad04aa | 1487 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1488 | #endif |
2d4fcd5e | 1489 | } |
748a9306 LW |
1490 | } |
1491 | else if (strEQ(s,"DEFAULT") || !*s) { | |
1492 | if (i) | |
2e34cc90 CL |
1493 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1494 | { | |
27da23d5 | 1495 | PL_sig_defaulting[i] = 1; |
5c1546dc | 1496 | (void)rsignal(i, PL_csighandlerp); |
2e34cc90 CL |
1497 | } |
1498 | #else | |
8aad04aa | 1499 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1500 | #endif |
748a9306 | 1501 | } |
79072805 | 1502 | else { |
5aabfad6 | 1503 | /* |
1504 | * We should warn if HINT_STRICT_REFS, but without | |
1505 | * access to a known hint bit in a known OP, we can't | |
1506 | * tell whether HINT_STRICT_REFS is in force or not. | |
1507 | */ | |
46fc3d4c | 1508 | if (!strchr(s,':') && !strchr(s,'\'')) |
89529cee | 1509 | Perl_sv_insert(aTHX_ sv, 0, 0, STR_WITH_LEN("main::")); |
748a9306 | 1510 | if (i) |
5c1546dc | 1511 | (void)rsignal(i, PL_csighandlerp); |
748a9306 | 1512 | else |
46da273f | 1513 | *svp = SvREFCNT_inc_simple_NN(sv); |
79072805 | 1514 | } |
2d4fcd5e AJ |
1515 | #ifdef HAS_SIGPROCMASK |
1516 | if(i) | |
1517 | LEAVE; | |
1518 | #endif | |
1519 | if(to_dec) | |
1520 | SvREFCNT_dec(to_dec); | |
79072805 LW |
1521 | return 0; |
1522 | } | |
64ca3a65 | 1523 | #endif /* !PERL_MICRO */ |
79072805 LW |
1524 | |
1525 | int | |
864dbfa3 | 1526 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1527 | { |
97aff369 | 1528 | dVAR; |
08aeb9f7 | 1529 | HV* stash; |
8772537c | 1530 | PERL_UNUSED_ARG(sv); |
e1a479c5 | 1531 | |
08aeb9f7 BB |
1532 | /* Bail out if destruction is going on */ |
1533 | if(PL_dirty) return 0; | |
1534 | ||
89c14e2e BB |
1535 | /* Skip _isaelem because _isa will handle it shortly */ |
1536 | if (PL_delaymagic & DM_ARRAY && mg->mg_type == PERL_MAGIC_isaelem) | |
1537 | return 0; | |
1538 | ||
70cd14a1 CB |
1539 | /* XXX Once it's possible, we need to |
1540 | detect that our @ISA is aliased in | |
1541 | other stashes, and act on the stashes | |
1542 | of all of the aliases */ | |
1543 | ||
e1a479c5 BB |
1544 | /* The first case occurs via setisa, |
1545 | the second via setisa_elem, which | |
1546 | calls this same magic */ | |
08aeb9f7 BB |
1547 | stash = GvSTASH( |
1548 | SvTYPE(mg->mg_obj) == SVt_PVGV | |
1549 | ? (GV*)mg->mg_obj | |
1550 | : (GV*)SvMAGIC(mg->mg_obj)->mg_obj | |
e1a479c5 BB |
1551 | ); |
1552 | ||
89c14e2e | 1553 | mro_isa_changed_in(stash); |
08aeb9f7 | 1554 | |
463ee0b2 LW |
1555 | return 0; |
1556 | } | |
1557 | ||
1558 | int | |
52b45067 RD |
1559 | Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg) |
1560 | { | |
1561 | dVAR; | |
1562 | HV* stash; | |
1563 | ||
1564 | /* Bail out if destruction is going on */ | |
1565 | if(PL_dirty) return 0; | |
1566 | ||
1567 | av_clear((AV*)sv); | |
1568 | ||
1569 | /* XXX see comments in magic_setisa */ | |
1570 | stash = GvSTASH( | |
1571 | SvTYPE(mg->mg_obj) == SVt_PVGV | |
1572 | ? (GV*)mg->mg_obj | |
1573 | : (GV*)SvMAGIC(mg->mg_obj)->mg_obj | |
1574 | ); | |
1575 | ||
1576 | mro_isa_changed_in(stash); | |
1577 | ||
1578 | return 0; | |
1579 | } | |
1580 | ||
1581 | int | |
864dbfa3 | 1582 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1583 | { |
97aff369 | 1584 | dVAR; |
8772537c AL |
1585 | PERL_UNUSED_ARG(sv); |
1586 | PERL_UNUSED_ARG(mg); | |
3280af22 | 1587 | PL_amagic_generation++; |
463ee0b2 | 1588 | |
a0d0e21e LW |
1589 | return 0; |
1590 | } | |
463ee0b2 | 1591 | |
946ec16e | 1592 | int |
864dbfa3 | 1593 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1594 | { |
dd374669 | 1595 | HV * const hv = (HV*)LvTARG(sv); |
6ff81951 | 1596 | I32 i = 0; |
8772537c | 1597 | PERL_UNUSED_ARG(mg); |
7719e241 | 1598 | |
6ff81951 | 1599 | if (hv) { |
497b47a8 JH |
1600 | (void) hv_iterinit(hv); |
1601 | if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) | |
1602 | i = HvKEYS(hv); | |
1603 | else { | |
1604 | while (hv_iternext(hv)) | |
1605 | i++; | |
1606 | } | |
6ff81951 GS |
1607 | } |
1608 | ||
1609 | sv_setiv(sv, (IV)i); | |
1610 | return 0; | |
1611 | } | |
1612 | ||
1613 | int | |
864dbfa3 | 1614 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1615 | { |
8772537c | 1616 | PERL_UNUSED_ARG(mg); |
946ec16e | 1617 | if (LvTARG(sv)) { |
1618 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1619 | } |
1620 | return 0; | |
ac27b0f5 | 1621 | } |
946ec16e | 1622 | |
e336de0d | 1623 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1624 | STATIC int |
e1ec3a88 | 1625 | S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val) |
a0d0e21e | 1626 | { |
97aff369 | 1627 | dVAR; |
a0d0e21e | 1628 | dSP; |
463ee0b2 | 1629 | |
924508f0 GS |
1630 | PUSHMARK(SP); |
1631 | EXTEND(SP, n); | |
33c27489 | 1632 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 | 1633 | if (n > 1) { |
93965878 | 1634 | if (mg->mg_ptr) { |
565764a8 | 1635 | if (mg->mg_len >= 0) |
6e449a3a | 1636 | mPUSHp(mg->mg_ptr, mg->mg_len); |
565764a8 | 1637 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1638 | PUSHs((SV*)mg->mg_ptr); |
1639 | } | |
14befaf4 | 1640 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { |
6e449a3a | 1641 | mPUSHi(mg->mg_len); |
93965878 NIS |
1642 | } |
1643 | } | |
1644 | if (n > 2) { | |
1645 | PUSHs(val); | |
88e89b8a | 1646 | } |
463ee0b2 LW |
1647 | PUTBACK; |
1648 | ||
864dbfa3 | 1649 | return call_method(meth, flags); |
946ec16e | 1650 | } |
1651 | ||
76e3520e | 1652 | STATIC int |
e1ec3a88 | 1653 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1654 | { |
27da23d5 | 1655 | dVAR; dSP; |
463ee0b2 | 1656 | |
a0d0e21e LW |
1657 | ENTER; |
1658 | SAVETMPS; | |
e788e7d3 | 1659 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1660 | |
33c27489 | 1661 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1662 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1663 | } |
463ee0b2 | 1664 | |
d3acc0f7 | 1665 | POPSTACK; |
a0d0e21e LW |
1666 | FREETMPS; |
1667 | LEAVE; | |
1668 | return 0; | |
1669 | } | |
463ee0b2 | 1670 | |
a0d0e21e | 1671 | int |
864dbfa3 | 1672 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1673 | { |
a0d0e21e LW |
1674 | if (mg->mg_ptr) |
1675 | mg->mg_flags |= MGf_GSKIP; | |
58f82c5c | 1676 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1677 | return 0; |
1678 | } | |
1679 | ||
1680 | int | |
864dbfa3 | 1681 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1682 | { |
27da23d5 | 1683 | dVAR; dSP; |
a60c0954 | 1684 | ENTER; |
e788e7d3 | 1685 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1686 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1687 | POPSTACK; |
a60c0954 | 1688 | LEAVE; |
463ee0b2 LW |
1689 | return 0; |
1690 | } | |
1691 | ||
1692 | int | |
864dbfa3 | 1693 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1694 | { |
a0d0e21e LW |
1695 | return magic_methpack(sv,mg,"DELETE"); |
1696 | } | |
463ee0b2 | 1697 | |
93965878 NIS |
1698 | |
1699 | U32 | |
864dbfa3 | 1700 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1701 | { |
27da23d5 | 1702 | dVAR; dSP; |
22846ab4 | 1703 | I32 retval = 0; |
93965878 NIS |
1704 | |
1705 | ENTER; | |
1706 | SAVETMPS; | |
e788e7d3 | 1707 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1708 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1709 | sv = *PL_stack_sp--; |
22846ab4 AB |
1710 | retval = SvIV(sv)-1; |
1711 | if (retval < -1) | |
1712 | Perl_croak(aTHX_ "FETCHSIZE returned a negative value"); | |
93965878 | 1713 | } |
d3acc0f7 | 1714 | POPSTACK; |
93965878 NIS |
1715 | FREETMPS; |
1716 | LEAVE; | |
22846ab4 | 1717 | return (U32) retval; |
93965878 NIS |
1718 | } |
1719 | ||
cea2e8a9 GS |
1720 | int |
1721 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1722 | { |
27da23d5 | 1723 | dVAR; dSP; |
463ee0b2 | 1724 | |
e336de0d | 1725 | ENTER; |
e788e7d3 | 1726 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1727 | PUSHMARK(SP); |
33c27489 | 1728 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1729 | PUTBACK; |
864dbfa3 | 1730 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1731 | POPSTACK; |
a60c0954 | 1732 | LEAVE; |
a3bcc51e | 1733 | |
463ee0b2 LW |
1734 | return 0; |
1735 | } | |
1736 | ||
1737 | int | |
864dbfa3 | 1738 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1739 | { |
27da23d5 | 1740 | dVAR; dSP; |
666ea192 | 1741 | const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1742 | |
1743 | ENTER; | |
a0d0e21e | 1744 | SAVETMPS; |
e788e7d3 | 1745 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1746 | PUSHMARK(SP); |
1747 | EXTEND(SP, 2); | |
33c27489 | 1748 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1749 | if (SvOK(key)) |
1750 | PUSHs(key); | |
1751 | PUTBACK; | |
1752 | ||
864dbfa3 | 1753 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1754 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1755 | |
d3acc0f7 | 1756 | POPSTACK; |
a0d0e21e LW |
1757 | FREETMPS; |
1758 | LEAVE; | |
79072805 LW |
1759 | return 0; |
1760 | } | |
1761 | ||
1762 | int | |
1146e912 | 1763 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e LW |
1764 | { |
1765 | return magic_methpack(sv,mg,"EXISTS"); | |
ac27b0f5 | 1766 | } |
a0d0e21e | 1767 | |
a3bcc51e TP |
1768 | SV * |
1769 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1770 | { | |
27da23d5 | 1771 | dVAR; dSP; |
5fcbf73d | 1772 | SV *retval; |
8772537c AL |
1773 | SV * const tied = SvTIED_obj((SV*)hv, mg); |
1774 | HV * const pkg = SvSTASH((SV*)SvRV(tied)); | |
a3bcc51e TP |
1775 | |
1776 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { | |
1777 | SV *key; | |
bfcb3514 | 1778 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1779 | /* we are in an iteration so the hash cannot be empty */ |
1780 | return &PL_sv_yes; | |
1781 | /* no xhv_eiter so now use FIRSTKEY */ | |
1782 | key = sv_newmortal(); | |
1783 | magic_nextpack((SV*)hv, mg, key); | |
bfcb3514 | 1784 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1785 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1786 | } | |
1787 | ||
1788 | /* there is a SCALAR method that we can call */ | |
1789 | ENTER; | |
1790 | PUSHSTACKi(PERLSI_MAGIC); | |
1791 | PUSHMARK(SP); | |
1792 | EXTEND(SP, 1); | |
1793 | PUSHs(tied); | |
1794 | PUTBACK; | |
1795 | ||
1796 | if (call_method("SCALAR", G_SCALAR)) | |
1797 | retval = *PL_stack_sp--; | |
5fcbf73d AL |
1798 | else |
1799 | retval = &PL_sv_undef; | |
a3bcc51e TP |
1800 | POPSTACK; |
1801 | LEAVE; | |
1802 | return retval; | |
1803 | } | |
1804 | ||
a0d0e21e | 1805 | int |
864dbfa3 | 1806 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1807 | { |
97aff369 | 1808 | dVAR; |
8772537c AL |
1809 | GV * const gv = PL_DBline; |
1810 | const I32 i = SvTRUE(sv); | |
1811 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 1812 | atoi(MgPV_nolen_const(mg)), FALSE); |
8772537c AL |
1813 | if (svp && SvIOKp(*svp)) { |
1814 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
1815 | if (o) { | |
1816 | /* set or clear breakpoint in the relevant control op */ | |
1817 | if (i) | |
1818 | o->op_flags |= OPf_SPECIAL; | |
1819 | else | |
1820 | o->op_flags &= ~OPf_SPECIAL; | |
1821 | } | |
5df8de69 | 1822 | } |
79072805 LW |
1823 | return 0; |
1824 | } | |
1825 | ||
1826 | int | |
8772537c | 1827 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 1828 | { |
97aff369 | 1829 | dVAR; |
8772537c | 1830 | const AV * const obj = (AV*)mg->mg_obj; |
83bf042f | 1831 | if (obj) { |
fc15ae8f | 1832 | sv_setiv(sv, AvFILL(obj) + CopARYBASE_get(PL_curcop)); |
83bf042f NC |
1833 | } else { |
1834 | SvOK_off(sv); | |
1835 | } | |
79072805 LW |
1836 | return 0; |
1837 | } | |
1838 | ||
1839 | int | |
864dbfa3 | 1840 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1841 | { |
97aff369 | 1842 | dVAR; |
8772537c | 1843 | AV * const obj = (AV*)mg->mg_obj; |
83bf042f | 1844 | if (obj) { |
fc15ae8f | 1845 | av_fill(obj, SvIV(sv) - CopARYBASE_get(PL_curcop)); |
83bf042f NC |
1846 | } else { |
1847 | if (ckWARN(WARN_MISC)) | |
1848 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
1849 | "Attempt to set length of freed array"); | |
1850 | } | |
1851 | return 0; | |
1852 | } | |
1853 | ||
1854 | int | |
1855 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) | |
1856 | { | |
97aff369 | 1857 | dVAR; |
53c1dcc0 | 1858 | PERL_UNUSED_ARG(sv); |
94f3782b DM |
1859 | /* during global destruction, mg_obj may already have been freed */ |
1860 | if (PL_in_clean_all) | |
1ea47f64 | 1861 | return 0; |
94f3782b | 1862 | |
83bf042f NC |
1863 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
1864 | ||
1865 | if (mg) { | |
1866 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
1867 | reference. Hence the we (the array) are about to go away with it | |
1868 | still pointing at us. Clear its pointer, else it would be pointing | |
1869 | at free memory. See the comment in sv_magic about reference loops, | |
1870 | and why it can't own a reference to us. */ | |
1871 | mg->mg_obj = 0; | |
1872 | } | |
a0d0e21e LW |
1873 | return 0; |
1874 | } | |
1875 | ||
1876 | int | |
864dbfa3 | 1877 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1878 | { |
97aff369 | 1879 | dVAR; |
8772537c | 1880 | SV* const lsv = LvTARG(sv); |
3881461a | 1881 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 1882 | |
a0d0e21e | 1883 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
1884 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
1885 | if (found && found->mg_len >= 0) { | |
1886 | I32 i = found->mg_len; | |
7e2040f0 | 1887 | if (DO_UTF8(lsv)) |
a0ed51b3 | 1888 | sv_pos_b2u(lsv, &i); |
fc15ae8f | 1889 | sv_setiv(sv, i + CopARYBASE_get(PL_curcop)); |
a0d0e21e LW |
1890 | return 0; |
1891 | } | |
1892 | } | |
0c34ef67 | 1893 | SvOK_off(sv); |
a0d0e21e LW |
1894 | return 0; |
1895 | } | |
1896 | ||
1897 | int | |
864dbfa3 | 1898 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1899 | { |
97aff369 | 1900 | dVAR; |
8772537c | 1901 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
1902 | SSize_t pos; |
1903 | STRLEN len; | |
c00206c8 | 1904 | STRLEN ulen = 0; |
53d44271 | 1905 | MAGIC* found; |
a0d0e21e | 1906 | |
3881461a | 1907 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 1908 | |
a0d0e21e | 1909 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
1910 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
1911 | else | |
1912 | found = NULL; | |
1913 | if (!found) { | |
a0d0e21e LW |
1914 | if (!SvOK(sv)) |
1915 | return 0; | |
d83f0a82 NC |
1916 | #ifdef PERL_OLD_COPY_ON_WRITE |
1917 | if (SvIsCOW(lsv)) | |
1918 | sv_force_normal_flags(lsv, 0); | |
1919 | #endif | |
3881461a | 1920 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 1921 | NULL, 0); |
a0d0e21e LW |
1922 | } |
1923 | else if (!SvOK(sv)) { | |
3881461a | 1924 | found->mg_len = -1; |
a0d0e21e LW |
1925 | return 0; |
1926 | } | |
1927 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1928 | ||
fc15ae8f | 1929 | pos = SvIV(sv) - CopARYBASE_get(PL_curcop); |
a0ed51b3 | 1930 | |
7e2040f0 | 1931 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
1932 | ulen = sv_len_utf8(lsv); |
1933 | if (ulen) | |
1934 | len = ulen; | |
a0ed51b3 LW |
1935 | } |
1936 | ||
a0d0e21e LW |
1937 | if (pos < 0) { |
1938 | pos += len; | |
1939 | if (pos < 0) | |
1940 | pos = 0; | |
1941 | } | |
eb160463 | 1942 | else if (pos > (SSize_t)len) |
a0d0e21e | 1943 | pos = len; |
a0ed51b3 LW |
1944 | |
1945 | if (ulen) { | |
1946 | I32 p = pos; | |
1947 | sv_pos_u2b(lsv, &p, 0); | |
1948 | pos = p; | |
1949 | } | |
727405f8 | 1950 | |
3881461a AL |
1951 | found->mg_len = pos; |
1952 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 1953 | |
79072805 LW |
1954 | return 0; |
1955 | } | |
1956 | ||
1957 | int | |
864dbfa3 | 1958 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1959 | { |
1960 | STRLEN len; | |
35a4481c | 1961 | SV * const lsv = LvTARG(sv); |
b83604b4 | 1962 | const char * const tmps = SvPV_const(lsv,len); |
6ff81951 GS |
1963 | I32 offs = LvTARGOFF(sv); |
1964 | I32 rem = LvTARGLEN(sv); | |
8772537c | 1965 | PERL_UNUSED_ARG(mg); |
6ff81951 | 1966 | |
9aa983d2 JH |
1967 | if (SvUTF8(lsv)) |
1968 | sv_pos_u2b(lsv, &offs, &rem); | |
eb160463 | 1969 | if (offs > (I32)len) |
6ff81951 | 1970 | offs = len; |
eb160463 | 1971 | if (rem + offs > (I32)len) |
6ff81951 GS |
1972 | rem = len - offs; |
1973 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
9aa983d2 | 1974 | if (SvUTF8(lsv)) |
2ef4b674 | 1975 | SvUTF8_on(sv); |
6ff81951 GS |
1976 | return 0; |
1977 | } | |
1978 | ||
1979 | int | |
864dbfa3 | 1980 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1981 | { |
97aff369 | 1982 | dVAR; |
9aa983d2 | 1983 | STRLEN len; |
5fcbf73d | 1984 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 1985 | SV * const lsv = LvTARG(sv); |
9aa983d2 JH |
1986 | I32 lvoff = LvTARGOFF(sv); |
1987 | I32 lvlen = LvTARGLEN(sv); | |
8772537c | 1988 | PERL_UNUSED_ARG(mg); |
075a4a2b | 1989 | |
1aa99e6b | 1990 | if (DO_UTF8(sv)) { |
9aa983d2 JH |
1991 | sv_utf8_upgrade(lsv); |
1992 | sv_pos_u2b(lsv, &lvoff, &lvlen); | |
1993 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
b76f3ce2 | 1994 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
1995 | SvUTF8_on(lsv); |
1996 | } | |
9bf12eaf | 1997 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 1998 | const char *utf8; |
9aa983d2 | 1999 | sv_pos_u2b(lsv, &lvoff, &lvlen); |
b76f3ce2 | 2000 | LvTARGLEN(sv) = len; |
5fcbf73d AL |
2001 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
2002 | sv_insert(lsv, lvoff, lvlen, utf8, len); | |
2003 | Safefree(utf8); | |
1aa99e6b | 2004 | } |
b76f3ce2 GB |
2005 | else { |
2006 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
2007 | LvTARGLEN(sv) = len; | |
2008 | } | |
2009 | ||
1aa99e6b | 2010 | |
79072805 LW |
2011 | return 0; |
2012 | } | |
2013 | ||
2014 | int | |
864dbfa3 | 2015 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2016 | { |
97aff369 | 2017 | dVAR; |
8772537c | 2018 | PERL_UNUSED_ARG(sv); |
27cc343c | 2019 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
2020 | return 0; |
2021 | } | |
2022 | ||
2023 | int | |
864dbfa3 | 2024 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2025 | { |
97aff369 | 2026 | dVAR; |
8772537c | 2027 | PERL_UNUSED_ARG(sv); |
b01e650a DM |
2028 | /* update taint status */ |
2029 | if (PL_tainted) | |
2030 | mg->mg_len |= 1; | |
2031 | else | |
2032 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2033 | return 0; |
2034 | } | |
2035 | ||
2036 | int | |
864dbfa3 | 2037 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2038 | { |
35a4481c | 2039 | SV * const lsv = LvTARG(sv); |
8772537c | 2040 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2041 | |
6136c704 AL |
2042 | if (lsv) |
2043 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2044 | else | |
0c34ef67 | 2045 | SvOK_off(sv); |
6ff81951 | 2046 | |
6ff81951 GS |
2047 | return 0; |
2048 | } | |
2049 | ||
2050 | int | |
864dbfa3 | 2051 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2052 | { |
8772537c | 2053 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2054 | do_vecset(sv); /* XXX slurp this routine */ |
2055 | return 0; | |
2056 | } | |
2057 | ||
2058 | int | |
864dbfa3 | 2059 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 2060 | { |
97aff369 | 2061 | dVAR; |
a0714e2c | 2062 | SV *targ = NULL; |
5f05dabc | 2063 | if (LvTARGLEN(sv)) { |
68dc0745 | 2064 | if (mg->mg_obj) { |
8772537c AL |
2065 | SV * const ahv = LvTARG(sv); |
2066 | HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); | |
6d822dc4 MS |
2067 | if (he) |
2068 | targ = HeVAL(he); | |
68dc0745 | 2069 | } |
2070 | else { | |
8772537c | 2071 | AV* const av = (AV*)LvTARG(sv); |
68dc0745 | 2072 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2073 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2074 | } | |
46da273f | 2075 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2076 | /* somebody else defined it for us */ |
2077 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2078 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2079 | LvTARGLEN(sv) = 0; |
2080 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2081 | mg->mg_obj = NULL; |
68dc0745 | 2082 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2083 | } | |
5f05dabc | 2084 | } |
71be2cbc | 2085 | else |
2086 | targ = LvTARG(sv); | |
3280af22 | 2087 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 2088 | return 0; |
2089 | } | |
2090 | ||
2091 | int | |
864dbfa3 | 2092 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2093 | { |
8772537c | 2094 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2095 | if (LvTARGLEN(sv)) |
68dc0745 | 2096 | vivify_defelem(sv); |
2097 | if (LvTARG(sv)) { | |
5f05dabc | 2098 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2099 | SvSETMAGIC(LvTARG(sv)); |
2100 | } | |
5f05dabc | 2101 | return 0; |
2102 | } | |
2103 | ||
71be2cbc | 2104 | void |
864dbfa3 | 2105 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2106 | { |
97aff369 | 2107 | dVAR; |
74e13ce4 | 2108 | MAGIC *mg; |
a0714e2c | 2109 | SV *value = NULL; |
71be2cbc | 2110 | |
14befaf4 | 2111 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2112 | return; |
68dc0745 | 2113 | if (mg->mg_obj) { |
8772537c AL |
2114 | SV * const ahv = LvTARG(sv); |
2115 | HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); | |
6d822dc4 MS |
2116 | if (he) |
2117 | value = HeVAL(he); | |
3280af22 | 2118 | if (!value || value == &PL_sv_undef) |
be2597df | 2119 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2120 | } |
68dc0745 | 2121 | else { |
8772537c | 2122 | AV* const av = (AV*)LvTARG(sv); |
5aabfad6 | 2123 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2124 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2125 | else { |
d4c19fe8 | 2126 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2127 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2128 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2129 | } |
2130 | } | |
b37c2d43 | 2131 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2132 | SvREFCNT_dec(LvTARG(sv)); |
2133 | LvTARG(sv) = value; | |
71be2cbc | 2134 | LvTARGLEN(sv) = 0; |
68dc0745 | 2135 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2136 | mg->mg_obj = NULL; |
68dc0745 | 2137 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2138 | } |
2139 | ||
2140 | int | |
864dbfa3 | 2141 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2142 | { |
86f55936 | 2143 | return Perl_sv_kill_backrefs(aTHX_ sv, (AV*)mg->mg_obj); |
810b8aa5 GS |
2144 | } |
2145 | ||
2146 | int | |
864dbfa3 | 2147 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2148 | { |
96a5add6 | 2149 | PERL_UNUSED_CONTEXT; |
565764a8 | 2150 | mg->mg_len = -1; |
c6496cc7 | 2151 | SvSCREAM_off(sv); |
93a17b20 LW |
2152 | return 0; |
2153 | } | |
2154 | ||
2155 | int | |
864dbfa3 | 2156 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2157 | { |
35a4481c | 2158 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 LW |
2159 | |
2160 | if (uf && uf->uf_set) | |
24f81a43 | 2161 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2162 | return 0; |
2163 | } | |
2164 | ||
c277df42 | 2165 | int |
faf82a0b AE |
2166 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2167 | { | |
488344d2 NC |
2168 | const char type = mg->mg_type; |
2169 | if (type == PERL_MAGIC_qr) { | |
2170 | } else if (type == PERL_MAGIC_bm) { | |
2171 | SvTAIL_off(sv); | |
2172 | SvVALID_off(sv); | |
2173 | } else { | |
2174 | assert(type == PERL_MAGIC_fm); | |
2175 | SvCOMPILED_off(sv); | |
2176 | } | |
2177 | return sv_unmagic(sv, type); | |
faf82a0b AE |
2178 | } |
2179 | ||
7a4c00b4 | 2180 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2181 | int |
864dbfa3 | 2182 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2183 | { |
2184 | /* | |
838b5b74 | 2185 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2186 | * and vanished with a faint plop. |
2187 | */ | |
96a5add6 | 2188 | PERL_UNUSED_CONTEXT; |
8772537c | 2189 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2190 | if (mg->mg_ptr) { |
2191 | Safefree(mg->mg_ptr); | |
2192 | mg->mg_ptr = NULL; | |
565764a8 | 2193 | mg->mg_len = -1; |
7a4c00b4 | 2194 | } |
bbce6d69 | 2195 | return 0; |
2196 | } | |
7a4c00b4 | 2197 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2198 | |
7e8c5dac HS |
2199 | /* Just clear the UTF-8 cache data. */ |
2200 | int | |
2201 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2202 | { | |
96a5add6 | 2203 | PERL_UNUSED_CONTEXT; |
8772537c | 2204 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2205 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2206 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2207 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2208 | return 0; | |
2209 | } | |
2210 | ||
bbce6d69 | 2211 | int |
864dbfa3 | 2212 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2213 | { |
97aff369 | 2214 | dVAR; |
e1ec3a88 | 2215 | register const char *s; |
2fdbfb4d AB |
2216 | register I32 paren; |
2217 | register const REGEXP * rx; | |
2218 | const char * const remaining = mg->mg_ptr + 1; | |
79072805 | 2219 | I32 i; |
8990e307 | 2220 | STRLEN len; |
2fdbfb4d | 2221 | |
79072805 | 2222 | switch (*mg->mg_ptr) { |
2fdbfb4d AB |
2223 | case '\015': /* $^MATCH */ |
2224 | if (strEQ(remaining, "ATCH")) | |
2225 | goto do_match; | |
2226 | case '`': /* ${^PREMATCH} caught below */ | |
2227 | do_prematch: | |
f1b875a0 | 2228 | paren = RX_BUFF_IDX_PREMATCH; |
2fdbfb4d AB |
2229 | goto setparen; |
2230 | case '\'': /* ${^POSTMATCH} caught below */ | |
2231 | do_postmatch: | |
f1b875a0 | 2232 | paren = RX_BUFF_IDX_POSTMATCH; |
2fdbfb4d AB |
2233 | goto setparen; |
2234 | case '&': | |
2235 | do_match: | |
f1b875a0 | 2236 | paren = RX_BUFF_IDX_FULLMATCH; |
2fdbfb4d AB |
2237 | goto setparen; |
2238 | case '1': case '2': case '3': case '4': | |
2239 | case '5': case '6': case '7': case '8': case '9': | |
104a8018 | 2240 | paren = atoi(mg->mg_ptr); |
2fdbfb4d | 2241 | setparen: |
1e05feb3 | 2242 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
2fdbfb4d AB |
2243 | CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv); |
2244 | break; | |
1e05feb3 | 2245 | } else { |
2fdbfb4d AB |
2246 | /* Croak with a READONLY error when a numbered match var is |
2247 | * set without a previous pattern match. Unless it's C<local $1> | |
2248 | */ | |
2249 | if (!PL_localizing) { | |
2250 | Perl_croak(aTHX_ PL_no_modify); | |
2251 | } | |
2252 | } | |
748a9306 | 2253 | case '\001': /* ^A */ |
3280af22 | 2254 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 2255 | break; |
49460fe6 | 2256 | case '\003': /* ^C */ |
38ab35f8 | 2257 | PL_minus_c = (bool)SvIV(sv); |
49460fe6 NIS |
2258 | break; |
2259 | ||
79072805 | 2260 | case '\004': /* ^D */ |
b4ab917c | 2261 | #ifdef DEBUGGING |
b83604b4 | 2262 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2263 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
79072805 | 2264 | DEBUG_x(dump_all()); |
b4ab917c | 2265 | #else |
38ab35f8 | 2266 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2267 | #endif |
79072805 | 2268 | break; |
28f23441 | 2269 | case '\005': /* ^E */ |
d0063567 | 2270 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 2271 | #ifdef MACOS_TRADITIONAL |
38ab35f8 | 2272 | gMacPerl_OSErr = SvIV(sv); |
28f23441 | 2273 | #else |
cd39f2b6 | 2274 | # ifdef VMS |
38ab35f8 | 2275 | set_vaxc_errno(SvIV(sv)); |
048c1ddf | 2276 | # else |
cd39f2b6 | 2277 | # ifdef WIN32 |
d0063567 | 2278 | SetLastError( SvIV(sv) ); |
cd39f2b6 | 2279 | # else |
9fed8b87 | 2280 | # ifdef OS2 |
38ab35f8 | 2281 | os2_setsyserrno(SvIV(sv)); |
9fed8b87 | 2282 | # else |
d0063567 | 2283 | /* will anyone ever use this? */ |
38ab35f8 | 2284 | SETERRNO(SvIV(sv), 4); |
cd39f2b6 | 2285 | # endif |
048c1ddf IZ |
2286 | # endif |
2287 | # endif | |
22fae026 | 2288 | #endif |
d0063567 DK |
2289 | } |
2290 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
2291 | if (PL_encoding) | |
2292 | SvREFCNT_dec(PL_encoding); | |
2293 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2294 | PL_encoding = newSVsv(sv); | |
2295 | } | |
2296 | else { | |
a0714e2c | 2297 | PL_encoding = NULL; |
d0063567 DK |
2298 | } |
2299 | } | |
2300 | break; | |
79072805 | 2301 | case '\006': /* ^F */ |
38ab35f8 | 2302 | PL_maxsysfd = SvIV(sv); |
79072805 | 2303 | break; |
a0d0e21e | 2304 | case '\010': /* ^H */ |
38ab35f8 | 2305 | PL_hints = SvIV(sv); |
a0d0e21e | 2306 | break; |
9d116dd7 | 2307 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2308 | Safefree(PL_inplace); |
bd61b366 | 2309 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2310 | break; |
28f23441 | 2311 | case '\017': /* ^O */ |
ac27b0f5 | 2312 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2313 | Safefree(PL_osname); |
bd61b366 | 2314 | PL_osname = NULL; |
3511154c DM |
2315 | if (SvOK(sv)) { |
2316 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2317 | PL_osname = savesvpv(sv); |
3511154c | 2318 | } |
ac27b0f5 NIS |
2319 | } |
2320 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2321 | STRLEN len; |
2322 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2323 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 NC |
2324 | SV *tmp; |
2325 | struct refcounted_he *tmp_he; | |
2326 | ||
2327 | ||
2328 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
2329 | PL_hints | |
2330 | |= HINT_LOCALIZE_HH | HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
2331 | ||
2332 | /* Opening for input is more common than opening for output, so | |
2333 | ensure that hints for input are sooner on linked list. */ | |
59cd0e26 NC |
2334 | tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1, |
2335 | SVs_TEMP | SvUTF8(sv)) | |
2336 | : newSVpvn_flags("", 0, SVs_TEMP | SvUTF8(sv)); | |
8b850bd5 NC |
2337 | |
2338 | tmp_he | |
2339 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
84bafc02 NC |
2340 | newSVpvs_flags("open>", SVs_TEMP), |
2341 | tmp); | |
8b850bd5 NC |
2342 | |
2343 | /* The UTF-8 setting is carried over */ | |
2344 | sv_setpvn(tmp, start, out ? (STRLEN)(out - start) : len); | |
2345 | ||
11bcd5da | 2346 | PL_compiling.cop_hints_hash |
8b850bd5 | 2347 | = Perl_refcounted_he_new(aTHX_ tmp_he, |
84bafc02 NC |
2348 | newSVpvs_flags("open<", SVs_TEMP), |
2349 | tmp); | |
ac27b0f5 | 2350 | } |
28f23441 | 2351 | break; |
79072805 | 2352 | case '\020': /* ^P */ |
2fdbfb4d AB |
2353 | if (*remaining == '\0') { /* ^P */ |
2354 | PL_perldb = SvIV(sv); | |
2355 | if (PL_perldb && !PL_DBsingle) | |
2356 | init_debugger(); | |
2357 | break; | |
2358 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
2359 | goto do_prematch; | |
2360 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
2361 | goto do_postmatch; | |
2362 | } | |
79072805 | 2363 | case '\024': /* ^T */ |
88e89b8a | 2364 | #ifdef BIG_TIME |
6b88bc9c | 2365 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2366 | #else |
38ab35f8 | 2367 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2368 | #endif |
79072805 | 2369 | break; |
e07ea26a NC |
2370 | case '\025': /* ^UTF8CACHE */ |
2371 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2372 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2373 | } | |
2374 | break; | |
fde18df1 | 2375 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2376 | if (*(mg->mg_ptr+1) == '\0') { |
2377 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2378 | i = SvIV(sv); |
ac27b0f5 | 2379 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2380 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2381 | } |
599cee73 | 2382 | } |
0a378802 | 2383 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2384 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2385 | if (!SvPOK(sv) && PL_localizing) { |
2386 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2387 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2388 | break; |
2389 | } | |
f4fc7782 | 2390 | { |
b5477537 | 2391 | STRLEN len, i; |
d3a7d8c7 | 2392 | int accumulate = 0 ; |
f4fc7782 | 2393 | int any_fatals = 0 ; |
b83604b4 | 2394 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2395 | for (i = 0 ; i < len ; ++i) { |
2396 | accumulate |= ptr[i] ; | |
2397 | any_fatals |= (ptr[i] & 0xAA) ; | |
2398 | } | |
4243c432 NC |
2399 | if (!accumulate) { |
2400 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2401 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2402 | PL_compiling.cop_warnings = pWARN_NONE; | |
2403 | } | |
72dc9ed5 NC |
2404 | /* Yuck. I can't see how to abstract this: */ |
2405 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2406 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2407 | if (!specialWARN(PL_compiling.cop_warnings)) |
2408 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2409 | PL_compiling.cop_warnings = pWARN_ALL; |
2410 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2411 | } |
d3a7d8c7 | 2412 | else { |
72dc9ed5 NC |
2413 | STRLEN len; |
2414 | const char *const p = SvPV_const(sv, len); | |
2415 | ||
2416 | PL_compiling.cop_warnings | |
8ee4cf24 | 2417 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2418 | p, len); |
2419 | ||
d3a7d8c7 GS |
2420 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2421 | PL_dowarn |= G_WARN_ONCE ; | |
2422 | } | |
f4fc7782 | 2423 | |
d3a7d8c7 | 2424 | } |
4438c4b7 | 2425 | } |
971a9dd3 | 2426 | } |
79072805 LW |
2427 | break; |
2428 | case '.': | |
3280af22 NIS |
2429 | if (PL_localizing) { |
2430 | if (PL_localizing == 1) | |
7766f137 | 2431 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2432 | } |
3280af22 | 2433 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2434 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2435 | break; |
2436 | case '^': | |
3280af22 | 2437 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2438 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
f776e3cd | 2439 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); |
79072805 LW |
2440 | break; |
2441 | case '~': | |
3280af22 | 2442 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2443 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
f776e3cd | 2444 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); |
79072805 LW |
2445 | break; |
2446 | case '=': | |
38ab35f8 | 2447 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2448 | break; |
2449 | case '-': | |
38ab35f8 | 2450 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
3280af22 NIS |
2451 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
2452 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
2453 | break; |
2454 | case '%': | |
38ab35f8 | 2455 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2456 | break; |
2457 | case '|': | |
4b65379b | 2458 | { |
8772537c | 2459 | IO * const io = GvIOp(PL_defoutgv); |
720f287d AB |
2460 | if(!io) |
2461 | break; | |
38ab35f8 | 2462 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2463 | IoFLAGS(io) &= ~IOf_FLUSH; |
2464 | else { | |
2465 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2466 | PerlIO *ofp = IoOFP(io); | |
2467 | if (ofp) | |
2468 | (void)PerlIO_flush(ofp); | |
2469 | IoFLAGS(io) |= IOf_FLUSH; | |
2470 | } | |
2471 | } | |
79072805 LW |
2472 | } |
2473 | break; | |
79072805 | 2474 | case '/': |
3280af22 | 2475 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2476 | PL_rs = newSVsv(sv); |
79072805 LW |
2477 | break; |
2478 | case '\\': | |
7889fe52 NIS |
2479 | if (PL_ors_sv) |
2480 | SvREFCNT_dec(PL_ors_sv); | |
009c130f | 2481 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2482 | PL_ors_sv = newSVsv(sv); |
009c130f | 2483 | } |
e3c19b7b | 2484 | else { |
a0714e2c | 2485 | PL_ors_sv = NULL; |
e3c19b7b | 2486 | } |
79072805 LW |
2487 | break; |
2488 | case ',': | |
7889fe52 NIS |
2489 | if (PL_ofs_sv) |
2490 | SvREFCNT_dec(PL_ofs_sv); | |
2491 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2492 | PL_ofs_sv = newSVsv(sv); | |
2493 | } | |
2494 | else { | |
a0714e2c | 2495 | PL_ofs_sv = NULL; |
7889fe52 | 2496 | } |
79072805 | 2497 | break; |
79072805 | 2498 | case '[': |
38ab35f8 | 2499 | CopARYBASE_set(&PL_compiling, SvIV(sv)); |
79072805 LW |
2500 | break; |
2501 | case '?': | |
ff0cee69 | 2502 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
2503 | if (PL_localizing == 2) { |
2504 | PL_statusvalue = LvTARGOFF(sv); | |
2505 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2506 | } |
2507 | else | |
2508 | #endif | |
2509 | #ifdef VMSISH_STATUS | |
2510 | if (VMSISH_STATUS) | |
fb38d079 | 2511 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2512 | else |
2513 | #endif | |
38ab35f8 | 2514 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2515 | break; |
2516 | case '!': | |
93189314 JH |
2517 | { |
2518 | #ifdef VMS | |
2519 | # define PERL_VMS_BANG vaxc$errno | |
2520 | #else | |
2521 | # define PERL_VMS_BANG 0 | |
2522 | #endif | |
91487cfc | 2523 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2524 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2525 | } | |
79072805 LW |
2526 | break; |
2527 | case '<': | |
38ab35f8 | 2528 | PL_uid = SvIV(sv); |
3280af22 NIS |
2529 | if (PL_delaymagic) { |
2530 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2531 | break; /* don't do magic till later */ |
2532 | } | |
2533 | #ifdef HAS_SETRUID | |
b28d0864 | 2534 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2535 | #else |
2536 | #ifdef HAS_SETREUID | |
3280af22 | 2537 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2538 | #else |
85e6fe83 | 2539 | #ifdef HAS_SETRESUID |
b28d0864 | 2540 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2541 | #else |
75870ed3 | 2542 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2543 | #ifdef PERL_DARWIN | |
2544 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2545 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2546 | (void)PerlProc_setuid(0); | |
2547 | #endif | |
b28d0864 | 2548 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2549 | } else { |
d8eceb89 | 2550 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2551 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2552 | } |
79072805 LW |
2553 | #endif |
2554 | #endif | |
85e6fe83 | 2555 | #endif |
d8eceb89 | 2556 | PL_uid = PerlProc_getuid(); |
3280af22 | 2557 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2558 | break; |
2559 | case '>': | |
38ab35f8 | 2560 | PL_euid = SvIV(sv); |
3280af22 NIS |
2561 | if (PL_delaymagic) { |
2562 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2563 | break; /* don't do magic till later */ |
2564 | } | |
2565 | #ifdef HAS_SETEUID | |
3280af22 | 2566 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2567 | #else |
2568 | #ifdef HAS_SETREUID | |
b28d0864 | 2569 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2570 | #else |
2571 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2572 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2573 | #else |
b28d0864 NIS |
2574 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2575 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2576 | else { |
e8ee3774 | 2577 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2578 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2579 | } |
79072805 LW |
2580 | #endif |
2581 | #endif | |
85e6fe83 | 2582 | #endif |
d8eceb89 | 2583 | PL_euid = PerlProc_geteuid(); |
3280af22 | 2584 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2585 | break; |
2586 | case '(': | |
38ab35f8 | 2587 | PL_gid = SvIV(sv); |
3280af22 NIS |
2588 | if (PL_delaymagic) { |
2589 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2590 | break; /* don't do magic till later */ |
2591 | } | |
2592 | #ifdef HAS_SETRGID | |
b28d0864 | 2593 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2594 | #else |
2595 | #ifdef HAS_SETREGID | |
3280af22 | 2596 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2597 | #else |
2598 | #ifdef HAS_SETRESGID | |
b28d0864 | 2599 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2600 | #else |
b28d0864 NIS |
2601 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2602 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2603 | else { |
d8eceb89 | 2604 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2605 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2606 | } |
79072805 LW |
2607 | #endif |
2608 | #endif | |
85e6fe83 | 2609 | #endif |
d8eceb89 | 2610 | PL_gid = PerlProc_getgid(); |
3280af22 | 2611 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2612 | break; |
2613 | case ')': | |
5cd24f17 | 2614 | #ifdef HAS_SETGROUPS |
2615 | { | |
b83604b4 | 2616 | const char *p = SvPV_const(sv, len); |
757f63d8 SP |
2617 | Groups_t *gary = NULL; |
2618 | ||
2619 | while (isSPACE(*p)) | |
2620 | ++p; | |
2621 | PL_egid = Atol(p); | |
2622 | for (i = 0; i < NGROUPS; ++i) { | |
2623 | while (*p && !isSPACE(*p)) | |
2624 | ++p; | |
2625 | while (isSPACE(*p)) | |
2626 | ++p; | |
2627 | if (!*p) | |
2628 | break; | |
2629 | if(!gary) | |
2630 | Newx(gary, i + 1, Groups_t); | |
2631 | else | |
2632 | Renew(gary, i + 1, Groups_t); | |
2633 | gary[i] = Atol(p); | |
2634 | } | |
2635 | if (i) | |
2636 | (void)setgroups(i, gary); | |
f5a63d97 | 2637 | Safefree(gary); |
5cd24f17 | 2638 | } |
2639 | #else /* HAS_SETGROUPS */ | |
38ab35f8 | 2640 | PL_egid = SvIV(sv); |
5cd24f17 | 2641 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2642 | if (PL_delaymagic) { |
2643 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2644 | break; /* don't do magic till later */ |
2645 | } | |
2646 | #ifdef HAS_SETEGID | |
3280af22 | 2647 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2648 | #else |
2649 | #ifdef HAS_SETREGID | |
b28d0864 | 2650 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2651 | #else |
2652 | #ifdef HAS_SETRESGID | |
b28d0864 | 2653 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2654 | #else |
b28d0864 NIS |
2655 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2656 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2657 | else { |
d8eceb89 | 2658 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2659 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2660 | } |
79072805 LW |
2661 | #endif |
2662 | #endif | |
85e6fe83 | 2663 | #endif |
d8eceb89 | 2664 | PL_egid = PerlProc_getegid(); |
3280af22 | 2665 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2666 | break; |
2667 | case ':': | |
2d8e6c8d | 2668 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2669 | break; |
cd39f2b6 | 2670 | #ifndef MACOS_TRADITIONAL |
79072805 | 2671 | case '0': |
e2975953 | 2672 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2673 | #ifdef HAS_SETPROCTITLE |
2674 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2675 | * show a string from the process struct and provide | |
2676 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2677 | if (PL_origalen != 1) { |
b83604b4 | 2678 | s = SvPV_const(sv, len); |
98b76f99 | 2679 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2680 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2681 | * but not the "(perl) suffix from the ps(1) |
2682 | * output, because that's what ps(1) shows if the | |
2683 | * argv[] is modified. */ | |
6f2ad931 | 2684 | setproctitle("-%s", s); |
9aad2c0e | 2685 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2686 | /* This doesn't really work if you assume that |
2687 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2688 | * because in ps(1) output the result will be like | |
2689 | * sprintf("perl: %s (perl)", s) | |
2690 | * I guess this is a security feature: | |
2691 | * one (a user process) cannot get rid of the original name. | |
2692 | * --jhi */ | |
2693 | setproctitle("%s", s); | |
2694 | # endif | |
2695 | } | |
9d3968b2 | 2696 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2697 | if (PL_origalen != 1) { |
17aa7f3d | 2698 | union pstun un; |
b83604b4 | 2699 | s = SvPV_const(sv, len); |
6867be6d | 2700 | un.pst_command = (char *)s; |
17aa7f3d JH |
2701 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2702 | } | |
9d3968b2 | 2703 | #else |
2d2af554 GA |
2704 | if (PL_origalen > 1) { |
2705 | /* PL_origalen is set in perl_parse(). */ | |
2706 | s = SvPV_force(sv,len); | |
2707 | if (len >= (STRLEN)PL_origalen-1) { | |
2708 | /* Longer than original, will be truncated. We assume that | |
2709 | * PL_origalen bytes are available. */ | |
2710 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
2711 | } | |
2712 | else { | |
2713 | /* Shorter than original, will be padded. */ | |
235ac35d | 2714 | #ifdef PERL_DARWIN |
60777a0d JH |
2715 | /* Special case for Mac OS X: see [perl #38868] */ |
2716 | const int pad = 0; | |
235ac35d | 2717 | #else |
8a89a4f1 MB |
2718 | /* Is the space counterintuitive? Yes. |
2719 | * (You were expecting \0?) | |
2720 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
2721 | * --jhi */ | |
60777a0d | 2722 | const int pad = ' '; |
235ac35d | 2723 | #endif |
60777a0d JH |
2724 | Copy(s, PL_origargv[0], len, char); |
2725 | PL_origargv[0][len] = 0; | |
2726 | memset(PL_origargv[0] + len + 1, | |
2727 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
2728 | } |
2729 | PL_origargv[0][PL_origalen-1] = 0; | |
2730 | for (i = 1; i < PL_origargc; i++) | |
2731 | PL_origargv[i] = 0; | |
79072805 | 2732 | } |
9d3968b2 | 2733 | #endif |
e2975953 | 2734 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 | 2735 | break; |
cd39f2b6 | 2736 | #endif |
79072805 LW |
2737 | } |
2738 | return 0; | |
2739 | } | |
2740 | ||
2741 | I32 | |
35a4481c | 2742 | Perl_whichsig(pTHX_ const char *sig) |
79072805 | 2743 | { |
aadb217d | 2744 | register char* const* sigv; |
96a5add6 | 2745 | PERL_UNUSED_CONTEXT; |
79072805 | 2746 | |
aadb217d | 2747 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
79072805 | 2748 | if (strEQ(sig,*sigv)) |
aadb217d | 2749 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 LW |
2750 | #ifdef SIGCLD |
2751 | if (strEQ(sig,"CHLD")) | |
2752 | return SIGCLD; | |
2753 | #endif | |
2754 | #ifdef SIGCHLD | |
2755 | if (strEQ(sig,"CLD")) | |
2756 | return SIGCHLD; | |
2757 | #endif | |
7f1236c0 | 2758 | return -1; |
79072805 LW |
2759 | } |
2760 | ||
ecfc5424 | 2761 | Signal_t |
1e82f5a6 | 2762 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
b6455c53 | 2763 | Perl_sighandler(int sig, siginfo_t *sip, void *uap PERL_UNUSED_DECL) |
1e82f5a6 SH |
2764 | #else |
2765 | Perl_sighandler(int sig) | |
2766 | #endif | |
79072805 | 2767 | { |
1018e26f NIS |
2768 | #ifdef PERL_GET_SIG_CONTEXT |
2769 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 2770 | #else |
cea2e8a9 | 2771 | dTHX; |
71d280e3 | 2772 | #endif |
79072805 | 2773 | dSP; |
a0714e2c SS |
2774 | GV *gv = NULL; |
2775 | SV *sv = NULL; | |
8772537c | 2776 | SV * const tSv = PL_Sv; |
601f1833 | 2777 | CV *cv = NULL; |
533c011a | 2778 | OP *myop = PL_op; |
84902520 | 2779 | U32 flags = 0; |
8772537c | 2780 | XPV * const tXpv = PL_Xpv; |
71d280e3 | 2781 | |
3280af22 | 2782 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2783 | flags |= 1; |
3280af22 | 2784 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2785 | flags |= 4; |
3280af22 | 2786 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2787 | flags |= 16; |
2788 | ||
727405f8 | 2789 | if (!PL_psig_ptr[sig]) { |
99ef548b | 2790 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
2791 | PL_sig_name[sig]); |
2792 | exit(sig); | |
2793 | } | |
ff0cee69 | 2794 | |
84902520 TB |
2795 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2796 | infinity, so we fix 4 (in fact 5): */ | |
2797 | if (flags & 1) { | |
3280af22 | 2798 | PL_savestack_ix += 5; /* Protect save in progress. */ |
8772537c | 2799 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, (void*)&flags); |
84902520 | 2800 | } |
ac27b0f5 | 2801 | if (flags & 4) |
3280af22 | 2802 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2803 | if (flags & 16) |
3280af22 | 2804 | PL_scopestack_ix += 1; |
84902520 | 2805 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ac27b0f5 | 2806 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
8772537c AL |
2807 | || SvTYPE(cv) != SVt_PVCV) { |
2808 | HV *st; | |
f2c0649b | 2809 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 2810 | } |
84902520 | 2811 | |
a0d0e21e | 2812 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2813 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 2814 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2815 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2816 | : ((cv && CvGV(cv)) |
2817 | ? GvENAME(CvGV(cv)) | |
2818 | : "__ANON__"))); | |
2819 | goto cleanup; | |
79072805 LW |
2820 | } |
2821 | ||
22c35a8c | 2822 | if(PL_psig_name[sig]) { |
b37c2d43 | 2823 | sv = SvREFCNT_inc_NN(PL_psig_name[sig]); |
84902520 | 2824 | flags |= 64; |
df3728a2 | 2825 | #if !defined(PERL_IMPLICIT_CONTEXT) |
27da23d5 | 2826 | PL_sig_sv = sv; |
df3728a2 | 2827 | #endif |
84902520 | 2828 | } else { |
ff0cee69 | 2829 | sv = sv_newmortal(); |
22c35a8c | 2830 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2831 | } |
e336de0d | 2832 | |
e788e7d3 | 2833 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2834 | PUSHMARK(SP); |
79072805 | 2835 | PUSHs(sv); |
8aad04aa JH |
2836 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
2837 | { | |
2838 | struct sigaction oact; | |
2839 | ||
2840 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
8aad04aa JH |
2841 | if (sip) { |
2842 | HV *sih = newHV(); | |
2843 | SV *rv = newRV_noinc((SV*)sih); | |
2844 | /* The siginfo fields signo, code, errno, pid, uid, | |
2845 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
85771703 NC |
2846 | (void)hv_stores(sih, "signo", newSViv(sip->si_signo)); |
2847 | (void)hv_stores(sih, "code", newSViv(sip->si_code)); | |
79dec0f4 | 2848 | #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 |
2849 | hv_stores(sih, "errno", newSViv(sip->si_errno)); |
2850 | hv_stores(sih, "status", newSViv(sip->si_status)); | |
2851 | hv_stores(sih, "uid", newSViv(sip->si_uid)); | |
2852 | hv_stores(sih, "pid", newSViv(sip->si_pid)); | |
2853 | hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr))); | |
2854 | hv_stores(sih, "band", newSViv(sip->si_band)); | |
79dec0f4 | 2855 | #endif |
8aad04aa JH |
2856 | EXTEND(SP, 2); |
2857 | PUSHs((SV*)rv); | |
22f1178f | 2858 | mPUSHp((char *)sip, sizeof(*sip)); |
8aad04aa | 2859 | } |
b4552a27 | 2860 | |
8aad04aa JH |
2861 | } |
2862 | } | |
2863 | #endif | |
79072805 | 2864 | PUTBACK; |
a0d0e21e | 2865 | |
1b266415 | 2866 | call_sv((SV*)cv, G_DISCARD|G_EVAL); |
79072805 | 2867 | |
d3acc0f7 | 2868 | POPSTACK; |
1b266415 | 2869 | if (SvTRUE(ERRSV)) { |
1d615522 | 2870 | #ifndef PERL_MICRO |
983dbef6 | 2871 | #ifdef HAS_SIGPROCMASK |
1b266415 NIS |
2872 | /* Handler "died", for example to get out of a restart-able read(). |
2873 | * Before we re-do that on its behalf re-enable the signal which was | |
2874 | * blocked by the system when we entered. | |
2875 | */ | |
2876 | sigset_t set; | |
2877 | sigemptyset(&set); | |
2878 | sigaddset(&set,sig); | |
2879 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
2880 | #else | |
2881 | /* Not clear if this will work */ | |
2882 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 2883 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 | 2884 | #endif |
1d615522 | 2885 | #endif /* !PERL_MICRO */ |
bd61b366 | 2886 | Perl_die(aTHX_ NULL); |
1b266415 | 2887 | } |
00d579c5 | 2888 | cleanup: |
84902520 | 2889 | if (flags & 1) |
3280af22 | 2890 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 | 2891 | if (flags & 4) |
3280af22 | 2892 | PL_markstack_ptr--; |
84902520 | 2893 | if (flags & 16) |
3280af22 | 2894 | PL_scopestack_ix -= 1; |
84902520 TB |
2895 | if (flags & 64) |
2896 | SvREFCNT_dec(sv); | |
533c011a | 2897 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 2898 | |
3280af22 NIS |
2899 | PL_Sv = tSv; /* Restore global temporaries. */ |
2900 | PL_Xpv = tXpv; | |
53bb94e2 | 2901 | return; |
79072805 | 2902 | } |
4e35701f NIS |
2903 | |
2904 | ||
51371543 | 2905 | static void |
8772537c | 2906 | S_restore_magic(pTHX_ const void *p) |
51371543 | 2907 | { |
97aff369 | 2908 | dVAR; |
8772537c AL |
2909 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
2910 | SV* const sv = mgs->mgs_sv; | |
51371543 GS |
2911 | |
2912 | if (!sv) | |
2913 | return; | |
2914 | ||
2915 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2916 | { | |
f8c7b90f | 2917 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
2918 | /* While magic was saved (and off) sv_setsv may well have seen |
2919 | this SV as a prime candidate for COW. */ | |
2920 | if (SvIsCOW(sv)) | |
e424a81e | 2921 | sv_force_normal_flags(sv, 0); |
f9701176 NC |
2922 | #endif |
2923 | ||
51371543 GS |
2924 | if (mgs->mgs_flags) |
2925 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2926 | else | |
2927 | mg_magical(sv); | |
2b77b520 YST |
2928 | if (SvGMAGICAL(sv)) { |
2929 | /* downgrade public flags to private, | |
2930 | and discard any other private flags */ | |
2931 | ||
10edeb5d JH |
2932 | const U32 pubflags = SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK); |
2933 | if (pubflags) { | |
2934 | SvFLAGS(sv) &= ~( pubflags | (SVp_IOK|SVp_NOK|SVp_POK) ); | |
2935 | SvFLAGS(sv) |= ( pubflags << PRIVSHIFT ); | |
2b77b520 YST |
2936 | } |
2937 | } | |
51371543 GS |
2938 | } |
2939 | ||
2940 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2941 | ||
2942 | /* If we're still on top of the stack, pop us off. (That condition | |
2943 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2944 | * if it's being called via leave_scope.) | |
2945 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2946 | * may leave alloc gunk on the savestack, and some code | |
2947 | * (e.g. sighandler) doesn't expect that... | |
2948 | */ | |
2949 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2950 | { | |
2951 | I32 popval = SSPOPINT; | |
c76ac1ee | 2952 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2953 | PL_savestack_ix -= 2; |
2954 | popval = SSPOPINT; | |
2955 | assert(popval == SAVEt_ALLOC); | |
2956 | popval = SSPOPINT; | |
2957 | PL_savestack_ix -= popval; | |
2958 | } | |
2959 | ||
2960 | } | |
2961 | ||
2962 | static void | |
8772537c | 2963 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 2964 | { |
27da23d5 | 2965 | dVAR; |
e1ec3a88 | 2966 | const U32 flags = *(const U32*)p; |
51371543 GS |
2967 | |
2968 | if (flags & 1) | |
2969 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
df3728a2 | 2970 | #if !defined(PERL_IMPLICIT_CONTEXT) |
51371543 | 2971 | if (flags & 64) |
27da23d5 | 2972 | SvREFCNT_dec(PL_sig_sv); |
df3728a2 | 2973 | #endif |
51371543 | 2974 | } |
1018e26f | 2975 | |
66610fdd | 2976 | /* |
b3ca2e83 NC |
2977 | =for apidoc magic_sethint |
2978 | ||
2979 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
2980 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
2981 | anything that would need a deep copy. Maybe we should warn if we find a | |
2982 | reference. | |
b3ca2e83 NC |
2983 | |
2984 | =cut | |
2985 | */ | |
2986 | int | |
2987 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
2988 | { | |
2989 | dVAR; | |
fc92a12d | 2990 | SV *key = (mg->mg_len == HEf_SVKEY) ? (SV *)mg->mg_ptr |
59cd0e26 | 2991 | : newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP); |
b3ca2e83 | 2992 | |
e6e3e454 NC |
2993 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
2994 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
2995 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
2996 | or take other more complex action. */ | |
2997 | ||
5b9c0671 NC |
2998 | /* Something changed in %^H, so it will need to be restored on scope exit. |
2999 | Doing this here saves a lot of doing it manually in perl code (and | |
3000 | forgetting to do it, and consequent subtle errors. */ | |
3001 | PL_hints |= HINT_LOCALIZE_HH; | |
c28fe1ec | 3002 | PL_compiling.cop_hints_hash |
fc92a12d | 3003 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, key, sv); |
b3ca2e83 NC |
3004 | return 0; |
3005 | } | |
3006 | ||
3007 | /* | |
3008 | =for apidoc magic_sethint | |
3009 | ||
c28fe1ec NC |
3010 | Triggered by a delete from %^H, records the key to |
3011 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
3012 | |
3013 | =cut | |
3014 | */ | |
3015 | int | |
3016 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
3017 | { | |
3018 | dVAR; | |
f5a63d97 AL |
3019 | PERL_UNUSED_ARG(sv); |
3020 | ||
b3ca2e83 NC |
3021 | assert(mg->mg_len == HEf_SVKEY); |
3022 | ||
b3f24c00 MHM |
3023 | PERL_UNUSED_ARG(sv); |
3024 | ||
5b9c0671 | 3025 | PL_hints |= HINT_LOCALIZE_HH; |
c28fe1ec NC |
3026 | PL_compiling.cop_hints_hash |
3027 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
b3ca2e83 NC |
3028 | (SV *)mg->mg_ptr, &PL_sv_placeholder); |
3029 | return 0; | |
3030 | } | |
3031 | ||
3032 | /* | |
66610fdd RGS |
3033 | * Local variables: |
3034 | * c-indentation-style: bsd | |
3035 | * c-basic-offset: 4 | |
3036 | * indent-tabs-mode: t | |
3037 | * End: | |
3038 | * | |
37442d52 RGS |
3039 | * ex: set ts=8 sts=4 sw=4 noet: |
3040 | */ |