Commit | Line | Data |
---|---|---|
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 JH |
58 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
59 | Signal_t Perl_csighandler(int sig, ...); | |
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 | ||
35a4481c | 311 | if (DO_UTF8(sv)) { |
10516c54 | 312 | const U8 *s = (U8*)SvPV_const(sv, len); |
f5a63d97 | 313 | len = utf8_length(s, s + len); |
5636d518 DB |
314 | } |
315 | else | |
10516c54 | 316 | (void)SvPV_const(sv, len); |
463ee0b2 | 317 | return len; |
79072805 LW |
318 | } |
319 | ||
8fb26106 | 320 | I32 |
864dbfa3 | 321 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
322 | { |
323 | MAGIC* mg; | |
ac27b0f5 | 324 | |
93965878 | 325 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 326 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 327 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
328 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
329 | I32 len; | |
455ece5e | 330 | save_magic(mgs_ix, sv); |
93965878 | 331 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 332 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c | 333 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
334 | return len; |
335 | } | |
336 | } | |
337 | ||
338 | switch(SvTYPE(sv)) { | |
339 | case SVt_PVAV: | |
35a4481c | 340 | return AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
341 | case SVt_PVHV: |
342 | /* FIXME */ | |
343 | default: | |
cea2e8a9 | 344 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
345 | break; |
346 | } | |
347 | return 0; | |
348 | } | |
349 | ||
954c1994 GS |
350 | /* |
351 | =for apidoc mg_clear | |
352 | ||
353 | Clear something magical that the SV represents. See C<sv_magic>. | |
354 | ||
355 | =cut | |
356 | */ | |
357 | ||
79072805 | 358 | int |
864dbfa3 | 359 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 360 | { |
35a4481c | 361 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 362 | MAGIC* mg; |
463ee0b2 | 363 | |
455ece5e | 364 | save_magic(mgs_ix, sv); |
463ee0b2 | 365 | |
79072805 | 366 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 367 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 368 | /* omit GSKIP -- never set here */ |
727405f8 | 369 | |
2b260de0 | 370 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 | 371 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 372 | } |
463ee0b2 | 373 | |
8772537c | 374 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
375 | return 0; |
376 | } | |
377 | ||
954c1994 GS |
378 | /* |
379 | =for apidoc mg_find | |
380 | ||
381 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
382 | ||
383 | =cut | |
384 | */ | |
385 | ||
93a17b20 | 386 | MAGIC* |
35a4481c | 387 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 388 | { |
96a5add6 | 389 | PERL_UNUSED_CONTEXT; |
35a4481c AL |
390 | if (sv) { |
391 | MAGIC *mg; | |
392 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
393 | if (mg->mg_type == type) | |
394 | return mg; | |
395 | } | |
93a17b20 | 396 | } |
5f66b61c | 397 | return NULL; |
93a17b20 LW |
398 | } |
399 | ||
954c1994 GS |
400 | /* |
401 | =for apidoc mg_copy | |
402 | ||
403 | Copies the magic from one SV to another. See C<sv_magic>. | |
404 | ||
405 | =cut | |
406 | */ | |
407 | ||
79072805 | 408 | int |
864dbfa3 | 409 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 410 | { |
463ee0b2 | 411 | int count = 0; |
79072805 | 412 | MAGIC* mg; |
463ee0b2 | 413 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 414 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 NIS |
415 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
416 | count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen); | |
417 | } | |
823a54a3 AL |
418 | else { |
419 | const char type = mg->mg_type; | |
1e73acc8 | 420 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
421 | sv_magic(nsv, |
422 | (type == PERL_MAGIC_tied) | |
423 | ? SvTIED_obj(sv, mg) | |
424 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
425 | ? sv | |
426 | : mg->mg_obj, | |
427 | toLOWER(type), key, klen); | |
428 | count++; | |
429 | } | |
79072805 | 430 | } |
79072805 | 431 | } |
463ee0b2 | 432 | return count; |
79072805 LW |
433 | } |
434 | ||
954c1994 | 435 | /* |
0cbee0a4 DM |
436 | =for apidoc mg_localize |
437 | ||
438 | Copy some of the magic from an existing SV to new localized version of | |
439 | that SV. Container magic (eg %ENV, $1, tie) gets copied, value magic | |
440 | doesn't (eg taint, pos). | |
441 | ||
442 | =cut | |
443 | */ | |
444 | ||
445 | void | |
446 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv) | |
447 | { | |
97aff369 | 448 | dVAR; |
0cbee0a4 DM |
449 | MAGIC *mg; |
450 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
2b1b43ea | 451 | const MGVTBL* const vtbl = mg->mg_virtual; |
2767dea0 | 452 | if (!S_is_container_magic(mg)) |
0cbee0a4 | 453 | continue; |
0cbee0a4 | 454 | |
a5063e7c DM |
455 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
456 | (void)CALL_FPTR(vtbl->svt_local)(aTHX_ nsv, mg); | |
457 | else | |
0cbee0a4 DM |
458 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
459 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 460 | |
0cbee0a4 DM |
461 | /* container types should remain read-only across localization */ |
462 | SvFLAGS(nsv) |= SvREADONLY(sv); | |
463 | } | |
464 | ||
465 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
466 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
467 | PL_localizing = 1; | |
468 | SvSETMAGIC(nsv); | |
469 | PL_localizing = 0; | |
470 | } | |
471 | } | |
472 | ||
473 | /* | |
954c1994 GS |
474 | =for apidoc mg_free |
475 | ||
476 | Free any magic storage used by the SV. See C<sv_magic>. | |
477 | ||
478 | =cut | |
479 | */ | |
480 | ||
79072805 | 481 | int |
864dbfa3 | 482 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
483 | { |
484 | MAGIC* mg; | |
485 | MAGIC* moremagic; | |
486 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
35a4481c | 487 | const MGVTBL* const vtbl = mg->mg_virtual; |
79072805 | 488 | moremagic = mg->mg_moremagic; |
2b260de0 | 489 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 490 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 491 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
979acdb5 | 492 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) |
88e89b8a | 493 | Safefree(mg->mg_ptr); |
565764a8 | 494 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 495 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d460ef45 | 496 | } |
b881518d JH |
497 | if (mg->mg_flags & MGf_REFCOUNTED) |
498 | SvREFCNT_dec(mg->mg_obj); | |
79072805 LW |
499 | Safefree(mg); |
500 | } | |
b162af07 | 501 | SvMAGIC_set(sv, NULL); |
79072805 LW |
502 | return 0; |
503 | } | |
504 | ||
79072805 | 505 | #include <signal.h> |
79072805 | 506 | |
942e002e | 507 | U32 |
864dbfa3 | 508 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 509 | { |
97aff369 | 510 | dVAR; |
8772537c | 511 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 512 | |
0bd48802 AL |
513 | if (PL_curpm) { |
514 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
515 | if (rx) { | |
a678b0e4 YO |
516 | if (mg->mg_obj) { /* @+ */ |
517 | /* return the number possible */ | |
518 | return rx->nparens; | |
519 | } else { /* @- */ | |
520 | I32 paren = rx->lastparen; | |
521 | ||
522 | /* return the last filled */ | |
f46c4081 | 523 | while ( paren >= 0 |
f0ab9afb NC |
524 | && (rx->offs[paren].start == -1 |
525 | || rx->offs[paren].end == -1) ) | |
f46c4081 | 526 | paren--; |
a678b0e4 YO |
527 | return (U32)paren; |
528 | } | |
0bd48802 | 529 | } |
8f580fb8 | 530 | } |
ac27b0f5 | 531 | |
942e002e | 532 | return (U32)-1; |
6cef1e77 IZ |
533 | } |
534 | ||
535 | int | |
864dbfa3 | 536 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 537 | { |
97aff369 | 538 | dVAR; |
0bd48802 AL |
539 | if (PL_curpm) { |
540 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
541 | if (rx) { | |
542 | register const I32 paren = mg->mg_len; | |
543 | register I32 s; | |
544 | register I32 t; | |
545 | if (paren < 0) | |
546 | return 0; | |
547 | if (paren <= (I32)rx->nparens && | |
f0ab9afb NC |
548 | (s = rx->offs[paren].start) != -1 && |
549 | (t = rx->offs[paren].end) != -1) | |
0bd48802 AL |
550 | { |
551 | register I32 i; | |
552 | if (mg->mg_obj) /* @+ */ | |
553 | i = t; | |
554 | else /* @- */ | |
555 | i = s; | |
556 | ||
557 | if (i > 0 && RX_MATCH_UTF8(rx)) { | |
558 | const char * const b = rx->subbeg; | |
559 | if (b) | |
f5a63d97 | 560 | i = utf8_length((U8*)b, (U8*)(b+i)); |
0bd48802 | 561 | } |
727405f8 | 562 | |
0bd48802 | 563 | sv_setiv(sv, i); |
1aa99e6b | 564 | } |
0bd48802 | 565 | } |
6cef1e77 IZ |
566 | } |
567 | return 0; | |
568 | } | |
569 | ||
e4b89193 | 570 | int |
a29d06ed MG |
571 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
572 | { | |
d4c19fe8 AL |
573 | PERL_UNUSED_ARG(sv); |
574 | PERL_UNUSED_ARG(mg); | |
a29d06ed | 575 | Perl_croak(aTHX_ PL_no_modify); |
0dbb1585 | 576 | NORETURN_FUNCTION_END; |
a29d06ed MG |
577 | } |
578 | ||
93a17b20 | 579 | U32 |
864dbfa3 | 580 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 581 | { |
97aff369 | 582 | dVAR; |
93a17b20 | 583 | register I32 paren; |
93a17b20 | 584 | register I32 i; |
dd374669 | 585 | register const REGEXP *rx; |
a197cbdd | 586 | I32 s1, t1; |
93a17b20 LW |
587 | |
588 | switch (*mg->mg_ptr) { | |
589 | case '1': case '2': case '3': case '4': | |
590 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 591 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d | 592 | |
ffc61ed2 | 593 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
93a17b20 | 594 | getparen: |
eb160463 | 595 | if (paren <= (I32)rx->nparens && |
f0ab9afb NC |
596 | (s1 = rx->offs[paren].start) != -1 && |
597 | (t1 = rx->offs[paren].end) != -1) | |
bbce6d69 | 598 | { |
cf93c79d | 599 | i = t1 - s1; |
a197cbdd | 600 | getlen: |
a30b2f1f | 601 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
a28509cc | 602 | const char * const s = rx->subbeg + s1; |
768c67ee JH |
603 | const U8 *ep; |
604 | STRLEN el; | |
ffc61ed2 | 605 | |
6d5fa195 | 606 | i = t1 - s1; |
768c67ee JH |
607 | if (is_utf8_string_loclen((U8*)s, i, &ep, &el)) |
608 | i = el; | |
a197cbdd | 609 | } |
ffc61ed2 | 610 | if (i < 0) |
0844c848 | 611 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 612 | return i; |
93a17b20 | 613 | } |
235bddc8 NIS |
614 | else { |
615 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 616 | report_uninit(sv); |
235bddc8 NIS |
617 | } |
618 | } | |
619 | else { | |
620 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 621 | report_uninit(sv); |
93a17b20 | 622 | } |
748a9306 | 623 | return 0; |
93a17b20 | 624 | case '+': |
aaa362c4 | 625 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 | 626 | paren = rx->lastparen; |
13f57bf8 CS |
627 | if (paren) |
628 | goto getparen; | |
93a17b20 | 629 | } |
748a9306 | 630 | return 0; |
a01268b5 JH |
631 | case '\016': /* ^N */ |
632 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
633 | paren = rx->lastcloseparen; | |
634 | if (paren) | |
635 | goto getparen; | |
636 | } | |
637 | return 0; | |
93a17b20 | 638 | case '`': |
aaa362c4 | 639 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
f0ab9afb NC |
640 | if (rx->offs[0].start != -1) { |
641 | i = rx->offs[0].start; | |
a197cbdd GS |
642 | if (i > 0) { |
643 | s1 = 0; | |
644 | t1 = i; | |
645 | goto getlen; | |
646 | } | |
93a17b20 | 647 | } |
93a17b20 | 648 | } |
748a9306 | 649 | return 0; |
93a17b20 | 650 | case '\'': |
aaa362c4 | 651 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
f0ab9afb NC |
652 | if (rx->offs[0].end != -1) { |
653 | i = rx->sublen - rx->offs[0].end; | |
a197cbdd | 654 | if (i > 0) { |
f0ab9afb | 655 | s1 = rx->offs[0].end; |
a197cbdd GS |
656 | t1 = rx->sublen; |
657 | goto getlen; | |
658 | } | |
93a17b20 | 659 | } |
93a17b20 | 660 | } |
748a9306 | 661 | return 0; |
93a17b20 LW |
662 | } |
663 | magic_get(sv,mg); | |
2d8e6c8d | 664 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 | 665 | sv_2pv(sv, 0); |
2d8e6c8d | 666 | } |
93a17b20 LW |
667 | if (SvPOK(sv)) |
668 | return SvCUR(sv); | |
669 | return 0; | |
670 | } | |
671 | ||
ad3296c6 | 672 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
673 | if (SvPOK(sv)) { \ |
674 | STRLEN len = SvCUR(sv); \ | |
675 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
676 | while (len > 0 && isSPACE(p[len-1])) \ |
677 | --len; \ | |
678 | SvCUR_set(sv, len); \ | |
679 | p[len] = '\0'; \ | |
680 | } \ | |
ad3296c6 SH |
681 | } STMT_END |
682 | ||
8b850bd5 NC |
683 | void |
684 | Perl_emulate_cop_io(pTHX_ const COP *const c, SV *const sv) | |
685 | { | |
686 | if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT))) | |
687 | sv_setsv(sv, &PL_sv_undef); | |
688 | else { | |
689 | sv_setpvs(sv, ""); | |
690 | SvUTF8_off(sv); | |
691 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) { | |
692 | SV *const value = Perl_refcounted_he_fetch(aTHX_ | |
693 | c->cop_hints_hash, | |
694 | 0, "open<", 5, 0, 0); | |
695 | assert(value); | |
696 | sv_catsv(sv, value); | |
697 | } | |
698 | sv_catpvs(sv, "\0"); | |
699 | if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) { | |
700 | SV *const value = Perl_refcounted_he_fetch(aTHX_ | |
701 | c->cop_hints_hash, | |
702 | 0, "open>", 5, 0, 0); | |
703 | assert(value); | |
704 | sv_catsv(sv, value); | |
705 | } | |
706 | } | |
707 | } | |
708 | ||
79072805 | 709 | int |
864dbfa3 | 710 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 711 | { |
27da23d5 | 712 | dVAR; |
79072805 | 713 | register I32 paren; |
35272f84 | 714 | register char *s = NULL; |
d9f97599 | 715 | register REGEXP *rx; |
823a54a3 AL |
716 | const char * const remaining = mg->mg_ptr + 1; |
717 | const char nextchar = *remaining; | |
79072805 LW |
718 | |
719 | switch (*mg->mg_ptr) { | |
748a9306 | 720 | case '\001': /* ^A */ |
3280af22 | 721 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 722 | break; |
e5218da5 | 723 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 724 | if (nextchar == '\0') { |
e5218da5 GA |
725 | sv_setiv(sv, (IV)PL_minus_c); |
726 | } | |
823a54a3 | 727 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
728 | sv_setiv(sv, (IV)STATUS_NATIVE); |
729 | } | |
49460fe6 NIS |
730 | break; |
731 | ||
79072805 | 732 | case '\004': /* ^D */ |
aea4f609 | 733 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 734 | break; |
28f23441 | 735 | case '\005': /* ^E */ |
823a54a3 | 736 | if (nextchar == '\0') { |
4b645107 | 737 | #if defined(MACOS_TRADITIONAL) |
0a378802 JH |
738 | { |
739 | char msg[256]; | |
727405f8 | 740 | |
0a378802 | 741 | sv_setnv(sv,(double)gMacPerl_OSErr); |
727405f8 | 742 | sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : ""); |
0a378802 | 743 | } |
4b645107 | 744 | #elif defined(VMS) |
0a378802 JH |
745 | { |
746 | # include <descrip.h> | |
747 | # include <starlet.h> | |
748 | char msg[255]; | |
749 | $DESCRIPTOR(msgdsc,msg); | |
750 | sv_setnv(sv,(NV) vaxc$errno); | |
751 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
752 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
753 | else | |
c69006e4 | 754 | sv_setpvn(sv,"",0); |
0a378802 | 755 | } |
4b645107 | 756 | #elif defined(OS2) |
0a378802 JH |
757 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
758 | sv_setnv(sv, (NV)errno); | |
759 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
760 | } else { | |
761 | if (errno != errno_isOS2) { | |
823a54a3 | 762 | const int tmp = _syserrno(); |
0a378802 JH |
763 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
764 | Perl_rc = tmp; | |
765 | } | |
766 | sv_setnv(sv, (NV)Perl_rc); | |
767 | sv_setpv(sv, os2error(Perl_rc)); | |
768 | } | |
4b645107 | 769 | #elif defined(WIN32) |
0a378802 | 770 | { |
d4c19fe8 | 771 | const DWORD dwErr = GetLastError(); |
0a378802 | 772 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 773 | if (dwErr) { |
0a378802 JH |
774 | PerlProc_GetOSError(sv, dwErr); |
775 | } | |
776 | else | |
c69006e4 | 777 | sv_setpvn(sv, "", 0); |
0a378802 JH |
778 | SetLastError(dwErr); |
779 | } | |
22fae026 | 780 | #else |
f6c8f21d | 781 | { |
8772537c | 782 | const int saveerrno = errno; |
f6c8f21d | 783 | sv_setnv(sv, (NV)errno); |
666ea192 | 784 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
f6c8f21d RGS |
785 | errno = saveerrno; |
786 | } | |
28f23441 | 787 | #endif |
ad3296c6 | 788 | SvRTRIM(sv); |
0a378802 JH |
789 | SvNOK_on(sv); /* what a wonderful hack! */ |
790 | } | |
823a54a3 | 791 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
792 | sv_setsv(sv, PL_encoding); |
793 | break; | |
79072805 | 794 | case '\006': /* ^F */ |
3280af22 | 795 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 796 | break; |
a0d0e21e | 797 | case '\010': /* ^H */ |
3280af22 | 798 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 799 | break; |
9d116dd7 | 800 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
801 | if (PL_inplace) |
802 | sv_setpv(sv, PL_inplace); | |
79072805 | 803 | else |
3280af22 | 804 | sv_setsv(sv, &PL_sv_undef); |
79072805 | 805 | break; |
ac27b0f5 | 806 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 807 | if (nextchar == '\0') { |
ac27b0f5 | 808 | sv_setpv(sv, PL_osname); |
3511154c DM |
809 | SvTAINTED_off(sv); |
810 | } | |
823a54a3 | 811 | else if (strEQ(remaining, "PEN")) { |
8b850bd5 | 812 | Perl_emulate_cop_io(aTHX_ &PL_compiling, sv); |
ac27b0f5 | 813 | } |
28f23441 | 814 | break; |
cde0cee5 YO |
815 | case '\020': |
816 | if (nextchar == '\0') { /* ^P */ | |
817 | sv_setiv(sv, (IV)PL_perldb); | |
818 | } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */ | |
819 | goto do_prematch_fetch; | |
820 | } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */ | |
821 | goto do_postmatch_fetch; | |
822 | } | |
79072805 | 823 | break; |
fb73857a | 824 | case '\023': /* ^S */ |
823a54a3 | 825 | if (nextchar == '\0') { |
3280af22 | 826 | if (PL_lex_state != LEX_NOTPARSING) |
0c34ef67 | 827 | SvOK_off(sv); |
3280af22 | 828 | else if (PL_in_eval) |
6dc8a9e4 | 829 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
830 | else |
831 | sv_setiv(sv, 0); | |
d58bf5aa | 832 | } |
fb73857a | 833 | break; |
79072805 | 834 | case '\024': /* ^T */ |
823a54a3 | 835 | if (nextchar == '\0') { |
88e89b8a | 836 | #ifdef BIG_TIME |
7c36658b | 837 | sv_setnv(sv, PL_basetime); |
88e89b8a | 838 | #else |
7c36658b | 839 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 840 | #endif |
7c36658b | 841 | } |
823a54a3 | 842 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
843 | sv_setiv(sv, PL_tainting |
844 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
845 | : 0); | |
7c36658b | 846 | break; |
e07ea26a | 847 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 848 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 849 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 850 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 851 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
852 | else if (strEQ(remaining, "TF8CACHE")) |
853 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
854 | break; |
855 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 856 | if (nextchar == '\0') |
4438c4b7 | 857 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 858 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 859 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 860 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
861 | } |
862 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
666ea192 JH |
863 | sv_setpvn( |
864 | sv, | |
865 | (PL_dowarn & G_WARN_ON) ? WARN_ALLstring : WARN_NONEstring, | |
866 | WARNsize | |
867 | ); | |
013b78e8 | 868 | } |
d3a7d8c7 | 869 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
870 | /* Get the bit mask for $warnings::Bits{all}, because |
871 | * it could have been extended by warnings::register */ | |
823a54a3 | 872 | HV * const bits=get_hv("warnings::Bits", FALSE); |
f5a63d97 AL |
873 | if (bits) { |
874 | SV ** const bits_all = hv_fetchs(bits, "all", FALSE); | |
875 | if (bits_all) | |
876 | sv_setsv(sv, *bits_all); | |
75b6c4ca RGS |
877 | } |
878 | else { | |
879 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
880 | } | |
ac27b0f5 | 881 | } |
4438c4b7 | 882 | else { |
72dc9ed5 NC |
883 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
884 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 885 | } |
d3a7d8c7 | 886 | SvPOK_only(sv); |
4438c4b7 | 887 | } |
79072805 | 888 | break; |
cde0cee5 YO |
889 | case '\015': /* $^MATCH */ |
890 | if (strEQ(remaining, "ATCH")) { | |
79072805 LW |
891 | case '1': case '2': case '3': case '4': |
892 | case '5': case '6': case '7': case '8': case '9': case '&': | |
cde0cee5 YO |
893 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
894 | /* | |
895 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
896 | * XXX Does the new way break anything? | |
897 | */ | |
898 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ | |
93b32b6d | 899 | CALLREG_NUMBUF(rx,paren,sv); |
cde0cee5 YO |
900 | break; |
901 | } | |
902 | sv_setsv(sv,&PL_sv_undef); | |
79072805 LW |
903 | } |
904 | break; | |
905 | case '+': | |
aaa362c4 | 906 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
44a2ac75 | 907 | if (rx->lastparen) { |
93b32b6d | 908 | CALLREG_NUMBUF(rx,rx->lastparen,sv); |
44a2ac75 YO |
909 | break; |
910 | } | |
79072805 | 911 | } |
3280af22 | 912 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 913 | break; |
a01268b5 JH |
914 | case '\016': /* ^N */ |
915 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
44a2ac75 | 916 | if (rx->lastcloseparen) { |
93b32b6d | 917 | CALLREG_NUMBUF(rx,rx->lastcloseparen,sv); |
44a2ac75 YO |
918 | break; |
919 | } | |
920 | ||
a01268b5 JH |
921 | } |
922 | sv_setsv(sv,&PL_sv_undef); | |
923 | break; | |
79072805 | 924 | case '`': |
cde0cee5 | 925 | do_prematch_fetch: |
aaa362c4 | 926 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
93b32b6d YO |
927 | CALLREG_NUMBUF(rx,-2,sv); |
928 | break; | |
79072805 | 929 | } |
3280af22 | 930 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
931 | break; |
932 | case '\'': | |
cde0cee5 | 933 | do_postmatch_fetch: |
aaa362c4 | 934 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
93b32b6d YO |
935 | CALLREG_NUMBUF(rx,-1,sv); |
936 | break; | |
79072805 | 937 | } |
3280af22 | 938 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
939 | break; |
940 | case '.': | |
3280af22 | 941 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 942 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 943 | } |
79072805 LW |
944 | break; |
945 | case '?': | |
809a5acc | 946 | { |
809a5acc | 947 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 948 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
949 | LvTARGOFF(sv) = PL_statusvalue; |
950 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 951 | #endif |
809a5acc | 952 | } |
79072805 LW |
953 | break; |
954 | case '^': | |
0daa599b RGS |
955 | if (GvIOp(PL_defoutgv)) |
956 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); | |
79072805 LW |
957 | if (s) |
958 | sv_setpv(sv,s); | |
959 | else { | |
3280af22 | 960 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 LW |
961 | sv_catpv(sv,"_TOP"); |
962 | } | |
963 | break; | |
964 | case '~': | |
0daa599b RGS |
965 | if (GvIOp(PL_defoutgv)) |
966 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); | |
79072805 | 967 | if (!s) |
3280af22 | 968 | s = GvENAME(PL_defoutgv); |
79072805 LW |
969 | sv_setpv(sv,s); |
970 | break; | |
79072805 | 971 | case '=': |
0daa599b RGS |
972 | if (GvIOp(PL_defoutgv)) |
973 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); | |
79072805 LW |
974 | break; |
975 | case '-': | |
0daa599b RGS |
976 | if (GvIOp(PL_defoutgv)) |
977 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); | |
79072805 LW |
978 | break; |
979 | case '%': | |
0daa599b RGS |
980 | if (GvIOp(PL_defoutgv)) |
981 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); | |
79072805 | 982 | break; |
79072805 LW |
983 | case ':': |
984 | break; | |
985 | case '/': | |
986 | break; | |
987 | case '[': | |
11206fdd | 988 | sv_setiv(sv, (IV)CopARYBASE_get(PL_curcop)); |
79072805 LW |
989 | break; |
990 | case '|': | |
0daa599b RGS |
991 | if (GvIOp(PL_defoutgv)) |
992 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); | |
79072805 LW |
993 | break; |
994 | case ',': | |
79072805 LW |
995 | break; |
996 | case '\\': | |
b2ce0fda | 997 | if (PL_ors_sv) |
f28098ff | 998 | sv_copypv(sv, PL_ors_sv); |
79072805 | 999 | break; |
79072805 | 1000 | case '!': |
a5f75d66 | 1001 | #ifdef VMS |
65202027 | 1002 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 1003 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 1004 | #else |
88e89b8a | 1005 | { |
8772537c | 1006 | const int saveerrno = errno; |
65202027 | 1007 | sv_setnv(sv, (NV)errno); |
88e89b8a | 1008 | #ifdef OS2 |
ed344e4f IZ |
1009 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
1010 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 1011 | else |
a5f75d66 | 1012 | #endif |
666ea192 | 1013 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 1014 | errno = saveerrno; |
1015 | } | |
1016 | #endif | |
ad3296c6 | 1017 | SvRTRIM(sv); |
946ec16e | 1018 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
1019 | break; |
1020 | case '<': | |
3280af22 | 1021 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
1022 | break; |
1023 | case '>': | |
3280af22 | 1024 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
1025 | break; |
1026 | case '(': | |
3280af22 | 1027 | sv_setiv(sv, (IV)PL_gid); |
79072805 LW |
1028 | goto add_groups; |
1029 | case ')': | |
3280af22 | 1030 | sv_setiv(sv, (IV)PL_egid); |
79072805 | 1031 | add_groups: |
79072805 | 1032 | #ifdef HAS_GETGROUPS |
79072805 | 1033 | { |
57d7c65e | 1034 | Groups_t *gary = NULL; |
fb45abb2 | 1035 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
1036 | Newx(gary, num_groups, Groups_t); |
1037 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
1038 | for (i = 0; i < num_groups; i++) |
1039 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 1040 | Safefree(gary); |
79072805 | 1041 | } |
155aba94 | 1042 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 1043 | #endif |
79072805 | 1044 | break; |
cd39f2b6 | 1045 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
1046 | case '0': |
1047 | break; | |
cd39f2b6 | 1048 | #endif |
79072805 | 1049 | } |
a0d0e21e | 1050 | return 0; |
79072805 LW |
1051 | } |
1052 | ||
1053 | int | |
864dbfa3 | 1054 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1055 | { |
8772537c | 1056 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 LW |
1057 | |
1058 | if (uf && uf->uf_val) | |
24f81a43 | 1059 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1060 | return 0; |
1061 | } | |
1062 | ||
1063 | int | |
864dbfa3 | 1064 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1065 | { |
27da23d5 | 1066 | dVAR; |
9ae3433d | 1067 | STRLEN len = 0, klen; |
666ea192 | 1068 | const char *s = SvOK(sv) ? SvPV_const(sv,len) : ""; |
fabdb6c0 | 1069 | const char * const ptr = MgPV_const(mg,klen); |
88e89b8a | 1070 | my_setenv(ptr, s); |
1e422769 | 1071 | |
a0d0e21e LW |
1072 | #ifdef DYNAMIC_ENV_FETCH |
1073 | /* We just undefd an environment var. Is a replacement */ | |
1074 | /* waiting in the wings? */ | |
1075 | if (!len) { | |
fabdb6c0 AL |
1076 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE); |
1077 | if (valp) | |
4ab59fcc | 1078 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1079 | } |
1080 | #endif | |
1e422769 | 1081 | |
39e571d4 | 1082 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1083 | /* And you'll never guess what the dog had */ |
1084 | /* in its mouth... */ | |
3280af22 | 1085 | if (PL_tainting) { |
1e422769 | 1086 | MgTAINTEDDIR_off(mg); |
1087 | #ifdef VMS | |
5aabfad6 | 1088 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
b8ffc8df | 1089 | char pathbuf[256], eltbuf[256], *cp, *elt; |
c623ac67 | 1090 | Stat_t sbuf; |
1e422769 | 1091 | int i = 0, j = 0; |
1092 | ||
6fca0082 | 1093 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1094 | elt = eltbuf; |
1e422769 | 1095 | do { /* DCL$PATH may be a search list */ |
1096 | while (1) { /* as may dev portion of any element */ | |
1097 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1098 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1099 | cando_by_name(S_IWUSR,0,elt) ) { | |
1100 | MgTAINTEDDIR_on(mg); | |
1101 | return 0; | |
1102 | } | |
1103 | } | |
bd61b366 | 1104 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1105 | *cp = '\0'; |
1106 | if (my_trnlnm(elt, eltbuf, j++)) | |
1107 | elt = eltbuf; | |
1108 | else | |
1109 | break; | |
1110 | } | |
1111 | j = 0; | |
1112 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1113 | } | |
1114 | #endif /* VMS */ | |
5aabfad6 | 1115 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
8772537c | 1116 | const char * const strend = s + len; |
463ee0b2 LW |
1117 | |
1118 | while (s < strend) { | |
96827780 | 1119 | char tmpbuf[256]; |
c623ac67 | 1120 | Stat_t st; |
5f74f29c | 1121 | I32 i; |
f5a63d97 AL |
1122 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1123 | const char path_sep = '|'; | |
1124 | #else | |
1125 | const char path_sep = ':'; | |
1126 | #endif | |
96827780 | 1127 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1128 | s, strend, path_sep, &i); |
463ee0b2 | 1129 | s++; |
bb7a0f54 | 1130 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1131 | #ifdef VMS |
1132 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1133 | #else | |
1134 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1135 | #endif | |
c6ed36e1 | 1136 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1137 | MgTAINTEDDIR_on(mg); |
1e422769 | 1138 | return 0; |
1139 | } | |
463ee0b2 | 1140 | } |
79072805 LW |
1141 | } |
1142 | } | |
39e571d4 | 1143 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1144 | |
79072805 LW |
1145 | return 0; |
1146 | } | |
1147 | ||
1148 | int | |
864dbfa3 | 1149 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1150 | { |
8772537c | 1151 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1152 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1153 | return 0; |
1154 | } | |
1155 | ||
88e89b8a | 1156 | int |
864dbfa3 | 1157 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1158 | { |
97aff369 | 1159 | dVAR; |
65e66c80 | 1160 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1161 | #if defined(VMS) |
cea2e8a9 | 1162 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1163 | #else |
3280af22 | 1164 | if (PL_localizing) { |
fb73857a | 1165 | HE* entry; |
b0269e46 | 1166 | my_clearenv(); |
fb73857a | 1167 | hv_iterinit((HV*)sv); |
155aba94 | 1168 | while ((entry = hv_iternext((HV*)sv))) { |
fb73857a | 1169 | I32 keylen; |
1170 | my_setenv(hv_iterkey(entry, &keylen), | |
b83604b4 | 1171 | SvPV_nolen_const(hv_iterval((HV*)sv, entry))); |
fb73857a | 1172 | } |
1173 | } | |
1174 | #endif | |
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | int | |
864dbfa3 | 1179 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1180 | { |
27da23d5 | 1181 | dVAR; |
8772537c AL |
1182 | PERL_UNUSED_ARG(sv); |
1183 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1184 | #if defined(VMS) |
1185 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1186 | #else | |
1187 | my_clearenv(); | |
1188 | #endif | |
3e3baf6d | 1189 | return 0; |
66b1d557 HM |
1190 | } |
1191 | ||
64ca3a65 | 1192 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1193 | #ifdef HAS_SIGPROCMASK |
1194 | static void | |
1195 | restore_sigmask(pTHX_ SV *save_sv) | |
1196 | { | |
0bd48802 | 1197 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1198 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1199 | } |
1200 | #endif | |
66b1d557 | 1201 | int |
864dbfa3 | 1202 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1203 | { |
97aff369 | 1204 | dVAR; |
88e89b8a | 1205 | /* Are we fetching a signal entry? */ |
8772537c | 1206 | const I32 i = whichsig(MgPV_nolen_const(mg)); |
e02bfb16 | 1207 | if (i > 0) { |
22c35a8c GS |
1208 | if(PL_psig_ptr[i]) |
1209 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1210 | else { |
46da273f | 1211 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1212 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1213 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1214 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1215 | #endif |
1216 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1217 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1218 | sigstate = SIG_DFL; | |
85b332e2 | 1219 | #endif |
88e89b8a | 1220 | /* cache state so we don't fetch it again */ |
8aad04aa | 1221 | if(sigstate == (Sighandler_t) SIG_IGN) |
6502358f | 1222 | sv_setpvs(sv,"IGNORE"); |
88e89b8a | 1223 | else |
3280af22 | 1224 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1225 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1226 | SvTEMP_off(sv); |
1227 | } | |
1228 | } | |
1229 | return 0; | |
1230 | } | |
1231 | int | |
864dbfa3 | 1232 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1233 | { |
2d4fcd5e AJ |
1234 | /* XXX Some of this code was copied from Perl_magic_setsig. A little |
1235 | * refactoring might be in order. | |
1236 | */ | |
27da23d5 | 1237 | dVAR; |
8772537c AL |
1238 | register const char * const s = MgPV_nolen_const(mg); |
1239 | PERL_UNUSED_ARG(sv); | |
2d4fcd5e | 1240 | if (*s == '_') { |
cbbf8932 | 1241 | SV** svp = NULL; |
2d4fcd5e AJ |
1242 | if (strEQ(s,"__DIE__")) |
1243 | svp = &PL_diehook; | |
b274dc4e | 1244 | else if (strEQ(s,"__WARN__") && PL_warnhook != PERL_WARNHOOK_FATAL) |
2d4fcd5e | 1245 | svp = &PL_warnhook; |
27da23d5 | 1246 | if (svp && *svp) { |
b274dc4e | 1247 | SV *const to_dec = *svp; |
cbbf8932 | 1248 | *svp = NULL; |
b274dc4e | 1249 | SvREFCNT_dec(to_dec); |
2d4fcd5e AJ |
1250 | } |
1251 | } | |
1252 | else { | |
2d4fcd5e | 1253 | /* Are we clearing a signal entry? */ |
8772537c | 1254 | const I32 i = whichsig(s); |
e02bfb16 | 1255 | if (i > 0) { |
2d4fcd5e AJ |
1256 | #ifdef HAS_SIGPROCMASK |
1257 | sigset_t set, save; | |
1258 | SV* save_sv; | |
1259 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1260 | sigemptyset(&set); | |
1261 | sigaddset(&set,i); | |
1262 | sigprocmask(SIG_BLOCK, &set, &save); | |
1263 | ENTER; | |
1264 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1265 | SAVEFREESV(save_sv); | |
1266 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1267 | #endif | |
1268 | PERL_ASYNC_CHECK(); | |
1269 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) | |
27da23d5 | 1270 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2d4fcd5e AJ |
1271 | #endif |
1272 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
27da23d5 | 1273 | PL_sig_defaulting[i] = 1; |
5c1546dc | 1274 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1275 | #else |
8aad04aa | 1276 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2d4fcd5e AJ |
1277 | #endif |
1278 | if(PL_psig_name[i]) { | |
1279 | SvREFCNT_dec(PL_psig_name[i]); | |
1280 | PL_psig_name[i]=0; | |
1281 | } | |
1282 | if(PL_psig_ptr[i]) { | |
6136c704 | 1283 | SV * const to_dec=PL_psig_ptr[i]; |
2d4fcd5e AJ |
1284 | PL_psig_ptr[i]=0; |
1285 | LEAVE; | |
1286 | SvREFCNT_dec(to_dec); | |
1287 | } | |
1288 | else | |
1289 | LEAVE; | |
1290 | } | |
88e89b8a | 1291 | } |
1292 | return 0; | |
1293 | } | |
3d37d572 | 1294 | |
acd15b85 CB |
1295 | /* |
1296 | * The signal handling nomenclature has gotten a bit confusing since the advent of | |
1297 | * safe signals. S_raise_signal only raises signals by analogy with what the | |
1298 | * underlying system's signal mechanism does. It might be more proper to say that | |
1299 | * it defers signals that have already been raised and caught. | |
1300 | * | |
1301 | * PL_sig_pending and PL_psig_pend likewise do not track signals that are pending | |
1302 | * in the sense of being on the system's signal queue in between raising and delivery. | |
1303 | * They are only pending on Perl's deferral list, i.e., they track deferred signals | |
1304 | * awaiting delivery after the current Perl opcode completes and say nothing about | |
1305 | * signals raised but not yet caught in the underlying signal implementation. | |
1306 | */ | |
1307 | ||
2563cec5 IZ |
1308 | #ifndef SIG_PENDING_DIE_COUNT |
1309 | # define SIG_PENDING_DIE_COUNT 120 | |
1310 | #endif | |
1311 | ||
dd374669 AL |
1312 | static void |
1313 | S_raise_signal(pTHX_ int sig) | |
0a8e0eff | 1314 | { |
97aff369 | 1315 | dVAR; |
0a8e0eff NIS |
1316 | /* Set a flag to say this signal is pending */ |
1317 | PL_psig_pend[sig]++; | |
1318 | /* And one to say _a_ signal is pending */ | |
2563cec5 IZ |
1319 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1320 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1321 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
0a8e0eff NIS |
1322 | } |
1323 | ||
1324 | Signal_t | |
8aad04aa JH |
1325 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
1326 | Perl_csighandler(int sig, ...) | |
1327 | #else | |
0a8e0eff | 1328 | Perl_csighandler(int sig) |
8aad04aa | 1329 | #endif |
0a8e0eff | 1330 | { |
1018e26f NIS |
1331 | #ifdef PERL_GET_SIG_CONTEXT |
1332 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1333 | #else | |
85b332e2 CL |
1334 | dTHX; |
1335 | #endif | |
23ada85b | 1336 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1337 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1338 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1339 | #endif |
2e34cc90 | 1340 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1341 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1342 | #ifdef KILL_BY_SIGPRC |
1343 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1344 | #else | |
1345 | exit(1); | |
1346 | #endif | |
1347 | #endif | |
853d2c32 RGS |
1348 | if ( |
1349 | #ifdef SIGILL | |
1350 | sig == SIGILL || | |
1351 | #endif | |
1352 | #ifdef SIGBUS | |
1353 | sig == SIGBUS || | |
1354 | #endif | |
1355 | #ifdef SIGSEGV | |
1356 | sig == SIGSEGV || | |
1357 | #endif | |
1358 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 JH |
1359 | /* Call the perl level handler now-- |
1360 | * with risk we may be in malloc() etc. */ | |
1361 | (*PL_sighandlerp)(sig); | |
1362 | else | |
dd374669 | 1363 | S_raise_signal(aTHX_ sig); |
0a8e0eff NIS |
1364 | } |
1365 | ||
2e34cc90 CL |
1366 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1367 | void | |
1368 | Perl_csighandler_init(void) | |
1369 | { | |
1370 | int sig; | |
27da23d5 | 1371 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1372 | |
1373 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1374 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1375 | dTHX; |
27da23d5 | 1376 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1377 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1378 | #endif |
1379 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1380 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1381 | #endif |
1382 | } | |
27da23d5 | 1383 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1384 | } |
1385 | #endif | |
1386 | ||
0a8e0eff NIS |
1387 | void |
1388 | Perl_despatch_signals(pTHX) | |
1389 | { | |
97aff369 | 1390 | dVAR; |
0a8e0eff NIS |
1391 | int sig; |
1392 | PL_sig_pending = 0; | |
1393 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1394 | if (PL_psig_pend[sig]) { | |
25da4428 JH |
1395 | PERL_BLOCKSIG_ADD(set, sig); |
1396 | PL_psig_pend[sig] = 0; | |
1397 | PERL_BLOCKSIG_BLOCK(set); | |
f5203343 | 1398 | (*PL_sighandlerp)(sig); |
25da4428 | 1399 | PERL_BLOCKSIG_UNBLOCK(set); |
0a8e0eff NIS |
1400 | } |
1401 | } | |
1402 | } | |
1403 | ||
85e6fe83 | 1404 | int |
864dbfa3 | 1405 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1406 | { |
27da23d5 | 1407 | dVAR; |
79072805 | 1408 | I32 i; |
cbbf8932 | 1409 | SV** svp = NULL; |
2d4fcd5e AJ |
1410 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1411 | * effects (due to closures). We must make sure that the new disposition | |
1412 | * is in place before it is called. | |
1413 | */ | |
cbbf8932 | 1414 | SV* to_dec = NULL; |
e72dc28c | 1415 | STRLEN len; |
2d4fcd5e AJ |
1416 | #ifdef HAS_SIGPROCMASK |
1417 | sigset_t set, save; | |
1418 | SV* save_sv; | |
1419 | #endif | |
a0d0e21e | 1420 | |
d5263905 | 1421 | register const char *s = MgPV_const(mg,len); |
748a9306 LW |
1422 | if (*s == '_') { |
1423 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1424 | svp = &PL_diehook; |
748a9306 | 1425 | else if (strEQ(s,"__WARN__")) |
3280af22 | 1426 | svp = &PL_warnhook; |
748a9306 | 1427 | else |
cea2e8a9 | 1428 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1429 | i = 0; |
4633a7c4 | 1430 | if (*svp) { |
9289f461 RGS |
1431 | if (*svp != PERL_WARNHOOK_FATAL) |
1432 | to_dec = *svp; | |
cbbf8932 | 1433 | *svp = NULL; |
4633a7c4 | 1434 | } |
748a9306 LW |
1435 | } |
1436 | else { | |
1437 | i = whichsig(s); /* ...no, a brick */ | |
86d86cad | 1438 | if (i <= 0) { |
e476b1b5 | 1439 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 1440 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); |
748a9306 LW |
1441 | return 0; |
1442 | } | |
2d4fcd5e AJ |
1443 | #ifdef HAS_SIGPROCMASK |
1444 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1445 | sigemptyset(&set); | |
1446 | sigaddset(&set,i); | |
1447 | sigprocmask(SIG_BLOCK, &set, &save); | |
1448 | ENTER; | |
1449 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1450 | SAVEFREESV(save_sv); | |
1451 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1452 | #endif | |
1453 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1454 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1455 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1456 | #endif |
23ada85b | 1457 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1458 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1459 | #endif |
2e34cc90 | 1460 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1461 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1462 | #endif |
22c35a8c | 1463 | SvREFCNT_dec(PL_psig_name[i]); |
2d4fcd5e | 1464 | to_dec = PL_psig_ptr[i]; |
46da273f | 1465 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1466 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 1467 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 1468 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 1469 | } |
a0d0e21e | 1470 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
2d4fcd5e | 1471 | if (i) { |
5c1546dc | 1472 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1473 | #ifdef HAS_SIGPROCMASK |
1474 | LEAVE; | |
1475 | #endif | |
1476 | } | |
748a9306 | 1477 | else |
b37c2d43 | 1478 | *svp = SvREFCNT_inc_simple_NN(sv); |
2d4fcd5e AJ |
1479 | if(to_dec) |
1480 | SvREFCNT_dec(to_dec); | |
a0d0e21e LW |
1481 | return 0; |
1482 | } | |
baf38871 | 1483 | s = SvOK(sv) ? SvPV_force(sv,len) : "DEFAULT"; |
748a9306 | 1484 | if (strEQ(s,"IGNORE")) { |
85b332e2 | 1485 | if (i) { |
23ada85b | 1486 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1487 | PL_sig_ignoring[i] = 1; |
5c1546dc | 1488 | (void)rsignal(i, PL_csighandlerp); |
85b332e2 | 1489 | #else |
8aad04aa | 1490 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1491 | #endif |
2d4fcd5e | 1492 | } |
748a9306 LW |
1493 | } |
1494 | else if (strEQ(s,"DEFAULT") || !*s) { | |
1495 | if (i) | |
2e34cc90 CL |
1496 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1497 | { | |
27da23d5 | 1498 | PL_sig_defaulting[i] = 1; |
5c1546dc | 1499 | (void)rsignal(i, PL_csighandlerp); |
2e34cc90 CL |
1500 | } |
1501 | #else | |
8aad04aa | 1502 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1503 | #endif |
748a9306 | 1504 | } |
79072805 | 1505 | else { |
5aabfad6 | 1506 | /* |
1507 | * We should warn if HINT_STRICT_REFS, but without | |
1508 | * access to a known hint bit in a known OP, we can't | |
1509 | * tell whether HINT_STRICT_REFS is in force or not. | |
1510 | */ | |
46fc3d4c | 1511 | if (!strchr(s,':') && !strchr(s,'\'')) |
89529cee | 1512 | Perl_sv_insert(aTHX_ sv, 0, 0, STR_WITH_LEN("main::")); |
748a9306 | 1513 | if (i) |
5c1546dc | 1514 | (void)rsignal(i, PL_csighandlerp); |
748a9306 | 1515 | else |
46da273f | 1516 | *svp = SvREFCNT_inc_simple_NN(sv); |
79072805 | 1517 | } |
2d4fcd5e AJ |
1518 | #ifdef HAS_SIGPROCMASK |
1519 | if(i) | |
1520 | LEAVE; | |
1521 | #endif | |
1522 | if(to_dec) | |
1523 | SvREFCNT_dec(to_dec); | |
79072805 LW |
1524 | return 0; |
1525 | } | |
64ca3a65 | 1526 | #endif /* !PERL_MICRO */ |
79072805 LW |
1527 | |
1528 | int | |
864dbfa3 | 1529 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1530 | { |
97aff369 | 1531 | dVAR; |
8772537c AL |
1532 | PERL_UNUSED_ARG(sv); |
1533 | PERL_UNUSED_ARG(mg); | |
3280af22 | 1534 | PL_sub_generation++; |
463ee0b2 LW |
1535 | return 0; |
1536 | } | |
1537 | ||
1538 | int | |
864dbfa3 | 1539 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1540 | { |
97aff369 | 1541 | dVAR; |
8772537c AL |
1542 | PERL_UNUSED_ARG(sv); |
1543 | PERL_UNUSED_ARG(mg); | |
a0d0e21e | 1544 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 1545 | PL_amagic_generation++; |
463ee0b2 | 1546 | |
a0d0e21e LW |
1547 | return 0; |
1548 | } | |
463ee0b2 | 1549 | |
946ec16e | 1550 | int |
864dbfa3 | 1551 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1552 | { |
dd374669 | 1553 | HV * const hv = (HV*)LvTARG(sv); |
6ff81951 | 1554 | I32 i = 0; |
8772537c | 1555 | PERL_UNUSED_ARG(mg); |
7719e241 | 1556 | |
6ff81951 | 1557 | if (hv) { |
497b47a8 JH |
1558 | (void) hv_iterinit(hv); |
1559 | if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) | |
1560 | i = HvKEYS(hv); | |
1561 | else { | |
1562 | while (hv_iternext(hv)) | |
1563 | i++; | |
1564 | } | |
6ff81951 GS |
1565 | } |
1566 | ||
1567 | sv_setiv(sv, (IV)i); | |
1568 | return 0; | |
1569 | } | |
1570 | ||
1571 | int | |
864dbfa3 | 1572 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1573 | { |
8772537c | 1574 | PERL_UNUSED_ARG(mg); |
946ec16e | 1575 | if (LvTARG(sv)) { |
1576 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1577 | } |
1578 | return 0; | |
ac27b0f5 | 1579 | } |
946ec16e | 1580 | |
e336de0d | 1581 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1582 | STATIC int |
e1ec3a88 | 1583 | S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val) |
a0d0e21e | 1584 | { |
97aff369 | 1585 | dVAR; |
a0d0e21e | 1586 | dSP; |
463ee0b2 | 1587 | |
924508f0 GS |
1588 | PUSHMARK(SP); |
1589 | EXTEND(SP, n); | |
33c27489 | 1590 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 | 1591 | if (n > 1) { |
93965878 | 1592 | if (mg->mg_ptr) { |
565764a8 | 1593 | if (mg->mg_len >= 0) |
79cb57f6 | 1594 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1595 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1596 | PUSHs((SV*)mg->mg_ptr); |
1597 | } | |
14befaf4 | 1598 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { |
565764a8 | 1599 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1600 | } |
1601 | } | |
1602 | if (n > 2) { | |
1603 | PUSHs(val); | |
88e89b8a | 1604 | } |
463ee0b2 LW |
1605 | PUTBACK; |
1606 | ||
864dbfa3 | 1607 | return call_method(meth, flags); |
946ec16e | 1608 | } |
1609 | ||
76e3520e | 1610 | STATIC int |
e1ec3a88 | 1611 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1612 | { |
27da23d5 | 1613 | dVAR; dSP; |
463ee0b2 | 1614 | |
a0d0e21e LW |
1615 | ENTER; |
1616 | SAVETMPS; | |
e788e7d3 | 1617 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1618 | |
33c27489 | 1619 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1620 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1621 | } |
463ee0b2 | 1622 | |
d3acc0f7 | 1623 | POPSTACK; |
a0d0e21e LW |
1624 | FREETMPS; |
1625 | LEAVE; | |
1626 | return 0; | |
1627 | } | |
463ee0b2 | 1628 | |
a0d0e21e | 1629 | int |
864dbfa3 | 1630 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1631 | { |
a0d0e21e LW |
1632 | if (mg->mg_ptr) |
1633 | mg->mg_flags |= MGf_GSKIP; | |
58f82c5c | 1634 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1635 | return 0; |
1636 | } | |
1637 | ||
1638 | int | |
864dbfa3 | 1639 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1640 | { |
27da23d5 | 1641 | dVAR; dSP; |
a60c0954 | 1642 | ENTER; |
e788e7d3 | 1643 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1644 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1645 | POPSTACK; |
a60c0954 | 1646 | LEAVE; |
463ee0b2 LW |
1647 | return 0; |
1648 | } | |
1649 | ||
1650 | int | |
864dbfa3 | 1651 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1652 | { |
a0d0e21e LW |
1653 | return magic_methpack(sv,mg,"DELETE"); |
1654 | } | |
463ee0b2 | 1655 | |
93965878 NIS |
1656 | |
1657 | U32 | |
864dbfa3 | 1658 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1659 | { |
27da23d5 | 1660 | dVAR; dSP; |
93965878 NIS |
1661 | U32 retval = 0; |
1662 | ||
1663 | ENTER; | |
1664 | SAVETMPS; | |
e788e7d3 | 1665 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1666 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1667 | sv = *PL_stack_sp--; |
a60c0954 | 1668 | retval = (U32) SvIV(sv)-1; |
93965878 | 1669 | } |
d3acc0f7 | 1670 | POPSTACK; |
93965878 NIS |
1671 | FREETMPS; |
1672 | LEAVE; | |
1673 | return retval; | |
1674 | } | |
1675 | ||
cea2e8a9 GS |
1676 | int |
1677 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1678 | { |
27da23d5 | 1679 | dVAR; dSP; |
463ee0b2 | 1680 | |
e336de0d | 1681 | ENTER; |
e788e7d3 | 1682 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1683 | PUSHMARK(SP); |
33c27489 | 1684 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1685 | PUTBACK; |
864dbfa3 | 1686 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1687 | POPSTACK; |
a60c0954 | 1688 | LEAVE; |
a3bcc51e | 1689 | |
463ee0b2 LW |
1690 | return 0; |
1691 | } | |
1692 | ||
1693 | int | |
864dbfa3 | 1694 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1695 | { |
27da23d5 | 1696 | dVAR; dSP; |
666ea192 | 1697 | const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1698 | |
1699 | ENTER; | |
a0d0e21e | 1700 | SAVETMPS; |
e788e7d3 | 1701 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1702 | PUSHMARK(SP); |
1703 | EXTEND(SP, 2); | |
33c27489 | 1704 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1705 | if (SvOK(key)) |
1706 | PUSHs(key); | |
1707 | PUTBACK; | |
1708 | ||
864dbfa3 | 1709 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1710 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1711 | |
d3acc0f7 | 1712 | POPSTACK; |
a0d0e21e LW |
1713 | FREETMPS; |
1714 | LEAVE; | |
79072805 LW |
1715 | return 0; |
1716 | } | |
1717 | ||
1718 | int | |
1146e912 | 1719 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e LW |
1720 | { |
1721 | return magic_methpack(sv,mg,"EXISTS"); | |
ac27b0f5 | 1722 | } |
a0d0e21e | 1723 | |
a3bcc51e TP |
1724 | SV * |
1725 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1726 | { | |
27da23d5 | 1727 | dVAR; dSP; |
5fcbf73d | 1728 | SV *retval; |
8772537c AL |
1729 | SV * const tied = SvTIED_obj((SV*)hv, mg); |
1730 | HV * const pkg = SvSTASH((SV*)SvRV(tied)); | |
a3bcc51e TP |
1731 | |
1732 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { | |
1733 | SV *key; | |
bfcb3514 | 1734 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1735 | /* we are in an iteration so the hash cannot be empty */ |
1736 | return &PL_sv_yes; | |
1737 | /* no xhv_eiter so now use FIRSTKEY */ | |
1738 | key = sv_newmortal(); | |
1739 | magic_nextpack((SV*)hv, mg, key); | |
bfcb3514 | 1740 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1741 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1742 | } | |
1743 | ||
1744 | /* there is a SCALAR method that we can call */ | |
1745 | ENTER; | |
1746 | PUSHSTACKi(PERLSI_MAGIC); | |
1747 | PUSHMARK(SP); | |
1748 | EXTEND(SP, 1); | |
1749 | PUSHs(tied); | |
1750 | PUTBACK; | |
1751 | ||
1752 | if (call_method("SCALAR", G_SCALAR)) | |
1753 | retval = *PL_stack_sp--; | |
5fcbf73d AL |
1754 | else |
1755 | retval = &PL_sv_undef; | |
a3bcc51e TP |
1756 | POPSTACK; |
1757 | LEAVE; | |
1758 | return retval; | |
1759 | } | |
1760 | ||
a0d0e21e | 1761 | int |
864dbfa3 | 1762 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1763 | { |
97aff369 | 1764 | dVAR; |
8772537c AL |
1765 | GV * const gv = PL_DBline; |
1766 | const I32 i = SvTRUE(sv); | |
1767 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 1768 | atoi(MgPV_nolen_const(mg)), FALSE); |
8772537c AL |
1769 | if (svp && SvIOKp(*svp)) { |
1770 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
1771 | if (o) { | |
1772 | /* set or clear breakpoint in the relevant control op */ | |
1773 | if (i) | |
1774 | o->op_flags |= OPf_SPECIAL; | |
1775 | else | |
1776 | o->op_flags &= ~OPf_SPECIAL; | |
1777 | } | |
5df8de69 | 1778 | } |
79072805 LW |
1779 | return 0; |
1780 | } | |
1781 | ||
1782 | int | |
8772537c | 1783 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 1784 | { |
97aff369 | 1785 | dVAR; |
8772537c | 1786 | const AV * const obj = (AV*)mg->mg_obj; |
83bf042f | 1787 | if (obj) { |
fc15ae8f | 1788 | sv_setiv(sv, AvFILL(obj) + CopARYBASE_get(PL_curcop)); |
83bf042f NC |
1789 | } else { |
1790 | SvOK_off(sv); | |
1791 | } | |
79072805 LW |
1792 | return 0; |
1793 | } | |
1794 | ||
1795 | int | |
864dbfa3 | 1796 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1797 | { |
97aff369 | 1798 | dVAR; |
8772537c | 1799 | AV * const obj = (AV*)mg->mg_obj; |
83bf042f | 1800 | if (obj) { |
fc15ae8f | 1801 | av_fill(obj, SvIV(sv) - CopARYBASE_get(PL_curcop)); |
83bf042f NC |
1802 | } else { |
1803 | if (ckWARN(WARN_MISC)) | |
1804 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
1805 | "Attempt to set length of freed array"); | |
1806 | } | |
1807 | return 0; | |
1808 | } | |
1809 | ||
1810 | int | |
1811 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) | |
1812 | { | |
97aff369 | 1813 | dVAR; |
53c1dcc0 | 1814 | PERL_UNUSED_ARG(sv); |
94f3782b DM |
1815 | /* during global destruction, mg_obj may already have been freed */ |
1816 | if (PL_in_clean_all) | |
1ea47f64 | 1817 | return 0; |
94f3782b | 1818 | |
83bf042f NC |
1819 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
1820 | ||
1821 | if (mg) { | |
1822 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
1823 | reference. Hence the we (the array) are about to go away with it | |
1824 | still pointing at us. Clear its pointer, else it would be pointing | |
1825 | at free memory. See the comment in sv_magic about reference loops, | |
1826 | and why it can't own a reference to us. */ | |
1827 | mg->mg_obj = 0; | |
1828 | } | |
a0d0e21e LW |
1829 | return 0; |
1830 | } | |
1831 | ||
1832 | int | |
864dbfa3 | 1833 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1834 | { |
97aff369 | 1835 | dVAR; |
8772537c | 1836 | SV* const lsv = LvTARG(sv); |
3881461a | 1837 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 1838 | |
a0d0e21e | 1839 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
1840 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
1841 | if (found && found->mg_len >= 0) { | |
1842 | I32 i = found->mg_len; | |
7e2040f0 | 1843 | if (DO_UTF8(lsv)) |
a0ed51b3 | 1844 | sv_pos_b2u(lsv, &i); |
fc15ae8f | 1845 | sv_setiv(sv, i + CopARYBASE_get(PL_curcop)); |
a0d0e21e LW |
1846 | return 0; |
1847 | } | |
1848 | } | |
0c34ef67 | 1849 | SvOK_off(sv); |
a0d0e21e LW |
1850 | return 0; |
1851 | } | |
1852 | ||
1853 | int | |
864dbfa3 | 1854 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1855 | { |
97aff369 | 1856 | dVAR; |
8772537c | 1857 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
1858 | SSize_t pos; |
1859 | STRLEN len; | |
c00206c8 | 1860 | STRLEN ulen = 0; |
53d44271 | 1861 | MAGIC* found; |
a0d0e21e | 1862 | |
3881461a | 1863 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 1864 | |
a0d0e21e | 1865 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
1866 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
1867 | else | |
1868 | found = NULL; | |
1869 | if (!found) { | |
a0d0e21e LW |
1870 | if (!SvOK(sv)) |
1871 | return 0; | |
d83f0a82 NC |
1872 | #ifdef PERL_OLD_COPY_ON_WRITE |
1873 | if (SvIsCOW(lsv)) | |
1874 | sv_force_normal_flags(lsv, 0); | |
1875 | #endif | |
3881461a | 1876 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 1877 | NULL, 0); |
a0d0e21e LW |
1878 | } |
1879 | else if (!SvOK(sv)) { | |
3881461a | 1880 | found->mg_len = -1; |
a0d0e21e LW |
1881 | return 0; |
1882 | } | |
1883 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1884 | ||
fc15ae8f | 1885 | pos = SvIV(sv) - CopARYBASE_get(PL_curcop); |
a0ed51b3 | 1886 | |
7e2040f0 | 1887 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
1888 | ulen = sv_len_utf8(lsv); |
1889 | if (ulen) | |
1890 | len = ulen; | |
a0ed51b3 LW |
1891 | } |
1892 | ||
a0d0e21e LW |
1893 | if (pos < 0) { |
1894 | pos += len; | |
1895 | if (pos < 0) | |
1896 | pos = 0; | |
1897 | } | |
eb160463 | 1898 | else if (pos > (SSize_t)len) |
a0d0e21e | 1899 | pos = len; |
a0ed51b3 LW |
1900 | |
1901 | if (ulen) { | |
1902 | I32 p = pos; | |
1903 | sv_pos_u2b(lsv, &p, 0); | |
1904 | pos = p; | |
1905 | } | |
727405f8 | 1906 | |
3881461a AL |
1907 | found->mg_len = pos; |
1908 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 1909 | |
79072805 LW |
1910 | return 0; |
1911 | } | |
1912 | ||
1913 | int | |
864dbfa3 | 1914 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1915 | { |
79072805 | 1916 | GV* gv; |
8772537c AL |
1917 | PERL_UNUSED_ARG(mg); |
1918 | ||
79072805 LW |
1919 | if (!SvOK(sv)) |
1920 | return 0; | |
2e5b91de | 1921 | if (isGV_with_GP(sv)) { |
180488f8 NC |
1922 | /* We're actually already a typeglob, so don't need the stuff below. |
1923 | */ | |
1924 | return 0; | |
1925 | } | |
f776e3cd | 1926 | gv = gv_fetchsv(sv, GV_ADD, SVt_PVGV); |
79072805 LW |
1927 | if (sv == (SV*)gv) |
1928 | return 0; | |
1929 | if (GvGP(sv)) | |
88e89b8a | 1930 | gp_free((GV*)sv); |
79072805 | 1931 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1932 | return 0; |
1933 | } | |
1934 | ||
1935 | int | |
864dbfa3 | 1936 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1937 | { |
1938 | STRLEN len; | |
35a4481c | 1939 | SV * const lsv = LvTARG(sv); |
b83604b4 | 1940 | const char * const tmps = SvPV_const(lsv,len); |
6ff81951 GS |
1941 | I32 offs = LvTARGOFF(sv); |
1942 | I32 rem = LvTARGLEN(sv); | |
8772537c | 1943 | PERL_UNUSED_ARG(mg); |
6ff81951 | 1944 | |
9aa983d2 JH |
1945 | if (SvUTF8(lsv)) |
1946 | sv_pos_u2b(lsv, &offs, &rem); | |
eb160463 | 1947 | if (offs > (I32)len) |
6ff81951 | 1948 | offs = len; |
eb160463 | 1949 | if (rem + offs > (I32)len) |
6ff81951 GS |
1950 | rem = len - offs; |
1951 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
9aa983d2 | 1952 | if (SvUTF8(lsv)) |
2ef4b674 | 1953 | SvUTF8_on(sv); |
6ff81951 GS |
1954 | return 0; |
1955 | } | |
1956 | ||
1957 | int | |
864dbfa3 | 1958 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1959 | { |
97aff369 | 1960 | dVAR; |
9aa983d2 | 1961 | STRLEN len; |
5fcbf73d | 1962 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 1963 | SV * const lsv = LvTARG(sv); |
9aa983d2 JH |
1964 | I32 lvoff = LvTARGOFF(sv); |
1965 | I32 lvlen = LvTARGLEN(sv); | |
8772537c | 1966 | PERL_UNUSED_ARG(mg); |
075a4a2b | 1967 | |
1aa99e6b | 1968 | if (DO_UTF8(sv)) { |
9aa983d2 JH |
1969 | sv_utf8_upgrade(lsv); |
1970 | sv_pos_u2b(lsv, &lvoff, &lvlen); | |
1971 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
b76f3ce2 | 1972 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
1973 | SvUTF8_on(lsv); |
1974 | } | |
9bf12eaf | 1975 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 1976 | const char *utf8; |
9aa983d2 | 1977 | sv_pos_u2b(lsv, &lvoff, &lvlen); |
b76f3ce2 | 1978 | LvTARGLEN(sv) = len; |
5fcbf73d AL |
1979 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
1980 | sv_insert(lsv, lvoff, lvlen, utf8, len); | |
1981 | Safefree(utf8); | |
1aa99e6b | 1982 | } |
b76f3ce2 GB |
1983 | else { |
1984 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
1985 | LvTARGLEN(sv) = len; | |
1986 | } | |
1987 | ||
1aa99e6b | 1988 | |
79072805 LW |
1989 | return 0; |
1990 | } | |
1991 | ||
1992 | int | |
864dbfa3 | 1993 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1994 | { |
97aff369 | 1995 | dVAR; |
8772537c | 1996 | PERL_UNUSED_ARG(sv); |
27cc343c | 1997 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
1998 | return 0; |
1999 | } | |
2000 | ||
2001 | int | |
864dbfa3 | 2002 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 2003 | { |
97aff369 | 2004 | dVAR; |
8772537c | 2005 | PERL_UNUSED_ARG(sv); |
b01e650a DM |
2006 | /* update taint status */ |
2007 | if (PL_tainted) | |
2008 | mg->mg_len |= 1; | |
2009 | else | |
2010 | mg->mg_len &= ~1; | |
463ee0b2 LW |
2011 | return 0; |
2012 | } | |
2013 | ||
2014 | int | |
864dbfa3 | 2015 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 2016 | { |
35a4481c | 2017 | SV * const lsv = LvTARG(sv); |
8772537c | 2018 | PERL_UNUSED_ARG(mg); |
6ff81951 | 2019 | |
6136c704 AL |
2020 | if (lsv) |
2021 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
2022 | else | |
0c34ef67 | 2023 | SvOK_off(sv); |
6ff81951 | 2024 | |
6ff81951 GS |
2025 | return 0; |
2026 | } | |
2027 | ||
2028 | int | |
864dbfa3 | 2029 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2030 | { |
8772537c | 2031 | PERL_UNUSED_ARG(mg); |
79072805 LW |
2032 | do_vecset(sv); /* XXX slurp this routine */ |
2033 | return 0; | |
2034 | } | |
2035 | ||
2036 | int | |
864dbfa3 | 2037 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 2038 | { |
97aff369 | 2039 | dVAR; |
a0714e2c | 2040 | SV *targ = NULL; |
5f05dabc | 2041 | if (LvTARGLEN(sv)) { |
68dc0745 | 2042 | if (mg->mg_obj) { |
8772537c AL |
2043 | SV * const ahv = LvTARG(sv); |
2044 | HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); | |
6d822dc4 MS |
2045 | if (he) |
2046 | targ = HeVAL(he); | |
68dc0745 | 2047 | } |
2048 | else { | |
8772537c | 2049 | AV* const av = (AV*)LvTARG(sv); |
68dc0745 | 2050 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
2051 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
2052 | } | |
46da273f | 2053 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 2054 | /* somebody else defined it for us */ |
2055 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2056 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2057 | LvTARGLEN(sv) = 0; |
2058 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2059 | mg->mg_obj = NULL; |
68dc0745 | 2060 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2061 | } | |
5f05dabc | 2062 | } |
71be2cbc | 2063 | else |
2064 | targ = LvTARG(sv); | |
3280af22 | 2065 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 2066 | return 0; |
2067 | } | |
2068 | ||
2069 | int | |
864dbfa3 | 2070 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2071 | { |
8772537c | 2072 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2073 | if (LvTARGLEN(sv)) |
68dc0745 | 2074 | vivify_defelem(sv); |
2075 | if (LvTARG(sv)) { | |
5f05dabc | 2076 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2077 | SvSETMAGIC(LvTARG(sv)); |
2078 | } | |
5f05dabc | 2079 | return 0; |
2080 | } | |
2081 | ||
71be2cbc | 2082 | void |
864dbfa3 | 2083 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2084 | { |
97aff369 | 2085 | dVAR; |
74e13ce4 | 2086 | MAGIC *mg; |
a0714e2c | 2087 | SV *value = NULL; |
71be2cbc | 2088 | |
14befaf4 | 2089 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2090 | return; |
68dc0745 | 2091 | if (mg->mg_obj) { |
8772537c AL |
2092 | SV * const ahv = LvTARG(sv); |
2093 | HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); | |
6d822dc4 MS |
2094 | if (he) |
2095 | value = HeVAL(he); | |
3280af22 | 2096 | if (!value || value == &PL_sv_undef) |
be2597df | 2097 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2098 | } |
68dc0745 | 2099 | else { |
8772537c | 2100 | AV* const av = (AV*)LvTARG(sv); |
5aabfad6 | 2101 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2102 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2103 | else { |
d4c19fe8 | 2104 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2105 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2106 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2107 | } |
2108 | } | |
b37c2d43 | 2109 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2110 | SvREFCNT_dec(LvTARG(sv)); |
2111 | LvTARG(sv) = value; | |
71be2cbc | 2112 | LvTARGLEN(sv) = 0; |
68dc0745 | 2113 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2114 | mg->mg_obj = NULL; |
68dc0745 | 2115 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2116 | } |
2117 | ||
2118 | int | |
864dbfa3 | 2119 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2120 | { |
86f55936 | 2121 | return Perl_sv_kill_backrefs(aTHX_ sv, (AV*)mg->mg_obj); |
810b8aa5 GS |
2122 | } |
2123 | ||
2124 | int | |
864dbfa3 | 2125 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2126 | { |
96a5add6 | 2127 | PERL_UNUSED_CONTEXT; |
565764a8 | 2128 | mg->mg_len = -1; |
c6496cc7 | 2129 | SvSCREAM_off(sv); |
93a17b20 LW |
2130 | return 0; |
2131 | } | |
2132 | ||
2133 | int | |
864dbfa3 | 2134 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2135 | { |
8772537c | 2136 | PERL_UNUSED_ARG(mg); |
14befaf4 | 2137 | sv_unmagic(sv, PERL_MAGIC_bm); |
b84d1fce | 2138 | SvTAIL_off(sv); |
79072805 LW |
2139 | SvVALID_off(sv); |
2140 | return 0; | |
2141 | } | |
2142 | ||
2143 | int | |
864dbfa3 | 2144 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 2145 | { |
8772537c | 2146 | PERL_UNUSED_ARG(mg); |
14befaf4 | 2147 | sv_unmagic(sv, PERL_MAGIC_fm); |
55497cff | 2148 | SvCOMPILED_off(sv); |
2149 | return 0; | |
2150 | } | |
2151 | ||
2152 | int | |
864dbfa3 | 2153 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2154 | { |
35a4481c | 2155 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 LW |
2156 | |
2157 | if (uf && uf->uf_set) | |
24f81a43 | 2158 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2159 | return 0; |
2160 | } | |
2161 | ||
c277df42 | 2162 | int |
faf82a0b AE |
2163 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2164 | { | |
8772537c | 2165 | PERL_UNUSED_ARG(mg); |
faf82a0b AE |
2166 | sv_unmagic(sv, PERL_MAGIC_qr); |
2167 | return 0; | |
2168 | } | |
2169 | ||
2170 | int | |
864dbfa3 | 2171 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 | 2172 | { |
97aff369 | 2173 | dVAR; |
8772537c AL |
2174 | regexp * const re = (regexp *)mg->mg_obj; |
2175 | PERL_UNUSED_ARG(sv); | |
2176 | ||
c277df42 IZ |
2177 | ReREFCNT_dec(re); |
2178 | return 0; | |
2179 | } | |
2180 | ||
7a4c00b4 | 2181 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2182 | int |
864dbfa3 | 2183 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2184 | { |
2185 | /* | |
838b5b74 | 2186 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2187 | * and vanished with a faint plop. |
2188 | */ | |
96a5add6 | 2189 | PERL_UNUSED_CONTEXT; |
8772537c | 2190 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2191 | if (mg->mg_ptr) { |
2192 | Safefree(mg->mg_ptr); | |
2193 | mg->mg_ptr = NULL; | |
565764a8 | 2194 | mg->mg_len = -1; |
7a4c00b4 | 2195 | } |
bbce6d69 | 2196 | return 0; |
2197 | } | |
7a4c00b4 | 2198 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2199 | |
7e8c5dac HS |
2200 | /* Just clear the UTF-8 cache data. */ |
2201 | int | |
2202 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2203 | { | |
96a5add6 | 2204 | PERL_UNUSED_CONTEXT; |
8772537c | 2205 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2206 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2207 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2208 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2209 | return 0; | |
2210 | } | |
2211 | ||
bbce6d69 | 2212 | int |
864dbfa3 | 2213 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2214 | { |
97aff369 | 2215 | dVAR; |
e1ec3a88 | 2216 | register const char *s; |
79072805 | 2217 | I32 i; |
8990e307 | 2218 | STRLEN len; |
79072805 | 2219 | switch (*mg->mg_ptr) { |
748a9306 | 2220 | case '\001': /* ^A */ |
3280af22 | 2221 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 2222 | break; |
49460fe6 | 2223 | case '\003': /* ^C */ |
38ab35f8 | 2224 | PL_minus_c = (bool)SvIV(sv); |
49460fe6 NIS |
2225 | break; |
2226 | ||
79072805 | 2227 | case '\004': /* ^D */ |
b4ab917c | 2228 | #ifdef DEBUGGING |
b83604b4 | 2229 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2230 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
79072805 | 2231 | DEBUG_x(dump_all()); |
b4ab917c | 2232 | #else |
38ab35f8 | 2233 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2234 | #endif |
79072805 | 2235 | break; |
28f23441 | 2236 | case '\005': /* ^E */ |
d0063567 | 2237 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 2238 | #ifdef MACOS_TRADITIONAL |
38ab35f8 | 2239 | gMacPerl_OSErr = SvIV(sv); |
28f23441 | 2240 | #else |
cd39f2b6 | 2241 | # ifdef VMS |
38ab35f8 | 2242 | set_vaxc_errno(SvIV(sv)); |
048c1ddf | 2243 | # else |
cd39f2b6 | 2244 | # ifdef WIN32 |
d0063567 | 2245 | SetLastError( SvIV(sv) ); |
cd39f2b6 | 2246 | # else |
9fed8b87 | 2247 | # ifdef OS2 |
38ab35f8 | 2248 | os2_setsyserrno(SvIV(sv)); |
9fed8b87 | 2249 | # else |
d0063567 | 2250 | /* will anyone ever use this? */ |
38ab35f8 | 2251 | SETERRNO(SvIV(sv), 4); |
cd39f2b6 | 2252 | # endif |
048c1ddf IZ |
2253 | # endif |
2254 | # endif | |
22fae026 | 2255 | #endif |
d0063567 DK |
2256 | } |
2257 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
2258 | if (PL_encoding) | |
2259 | SvREFCNT_dec(PL_encoding); | |
2260 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2261 | PL_encoding = newSVsv(sv); | |
2262 | } | |
2263 | else { | |
a0714e2c | 2264 | PL_encoding = NULL; |
d0063567 DK |
2265 | } |
2266 | } | |
2267 | break; | |
79072805 | 2268 | case '\006': /* ^F */ |
38ab35f8 | 2269 | PL_maxsysfd = SvIV(sv); |
79072805 | 2270 | break; |
a0d0e21e | 2271 | case '\010': /* ^H */ |
38ab35f8 | 2272 | PL_hints = SvIV(sv); |
a0d0e21e | 2273 | break; |
9d116dd7 | 2274 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2275 | Safefree(PL_inplace); |
bd61b366 | 2276 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2277 | break; |
28f23441 | 2278 | case '\017': /* ^O */ |
ac27b0f5 | 2279 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2280 | Safefree(PL_osname); |
bd61b366 | 2281 | PL_osname = NULL; |
3511154c DM |
2282 | if (SvOK(sv)) { |
2283 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2284 | PL_osname = savesvpv(sv); |
3511154c | 2285 | } |
ac27b0f5 NIS |
2286 | } |
2287 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
8b850bd5 NC |
2288 | STRLEN len; |
2289 | const char *const start = SvPV(sv, len); | |
b54fc2b6 | 2290 | const char *out = (const char*)memchr(start, '\0', len); |
8b850bd5 NC |
2291 | SV *tmp; |
2292 | struct refcounted_he *tmp_he; | |
2293 | ||
2294 | ||
2295 | PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
2296 | PL_hints | |
2297 | |= HINT_LOCALIZE_HH | HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT; | |
2298 | ||
2299 | /* Opening for input is more common than opening for output, so | |
2300 | ensure that hints for input are sooner on linked list. */ | |
2301 | tmp = sv_2mortal(out ? newSVpvn(out + 1, start + len - out - 1) | |
2302 | : newSVpvs("")); | |
2303 | SvFLAGS(tmp) |= SvUTF8(sv); | |
2304 | ||
2305 | tmp_he | |
2306 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
2307 | sv_2mortal(newSVpvs("open>")), tmp); | |
2308 | ||
2309 | /* The UTF-8 setting is carried over */ | |
2310 | sv_setpvn(tmp, start, out ? (STRLEN)(out - start) : len); | |
2311 | ||
11bcd5da | 2312 | PL_compiling.cop_hints_hash |
8b850bd5 NC |
2313 | = Perl_refcounted_he_new(aTHX_ tmp_he, |
2314 | sv_2mortal(newSVpvs("open<")), tmp); | |
ac27b0f5 | 2315 | } |
28f23441 | 2316 | break; |
79072805 | 2317 | case '\020': /* ^P */ |
38ab35f8 | 2318 | PL_perldb = SvIV(sv); |
f2a7f298 | 2319 | if (PL_perldb && !PL_DBsingle) |
1ee4443e | 2320 | init_debugger(); |
79072805 LW |
2321 | break; |
2322 | case '\024': /* ^T */ | |
88e89b8a | 2323 | #ifdef BIG_TIME |
6b88bc9c | 2324 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2325 | #else |
38ab35f8 | 2326 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2327 | #endif |
79072805 | 2328 | break; |
e07ea26a NC |
2329 | case '\025': /* ^UTF8CACHE */ |
2330 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2331 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2332 | } | |
2333 | break; | |
fde18df1 | 2334 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2335 | if (*(mg->mg_ptr+1) == '\0') { |
2336 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2337 | i = SvIV(sv); |
ac27b0f5 | 2338 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2339 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2340 | } |
599cee73 | 2341 | } |
0a378802 | 2342 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2343 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2344 | if (!SvPOK(sv) && PL_localizing) { |
2345 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2346 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2347 | break; |
2348 | } | |
f4fc7782 | 2349 | { |
b5477537 | 2350 | STRLEN len, i; |
d3a7d8c7 | 2351 | int accumulate = 0 ; |
f4fc7782 | 2352 | int any_fatals = 0 ; |
b83604b4 | 2353 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2354 | for (i = 0 ; i < len ; ++i) { |
2355 | accumulate |= ptr[i] ; | |
2356 | any_fatals |= (ptr[i] & 0xAA) ; | |
2357 | } | |
4243c432 NC |
2358 | if (!accumulate) { |
2359 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2360 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2361 | PL_compiling.cop_warnings = pWARN_NONE; | |
2362 | } | |
72dc9ed5 NC |
2363 | /* Yuck. I can't see how to abstract this: */ |
2364 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2365 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2366 | if (!specialWARN(PL_compiling.cop_warnings)) |
2367 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2368 | PL_compiling.cop_warnings = pWARN_ALL; |
2369 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2370 | } |
d3a7d8c7 | 2371 | else { |
72dc9ed5 NC |
2372 | STRLEN len; |
2373 | const char *const p = SvPV_const(sv, len); | |
2374 | ||
2375 | PL_compiling.cop_warnings | |
8ee4cf24 | 2376 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2377 | p, len); |
2378 | ||
d3a7d8c7 GS |
2379 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2380 | PL_dowarn |= G_WARN_ONCE ; | |
2381 | } | |
f4fc7782 | 2382 | |
d3a7d8c7 | 2383 | } |
4438c4b7 | 2384 | } |
971a9dd3 | 2385 | } |
79072805 LW |
2386 | break; |
2387 | case '.': | |
3280af22 NIS |
2388 | if (PL_localizing) { |
2389 | if (PL_localizing == 1) | |
7766f137 | 2390 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2391 | } |
3280af22 | 2392 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2393 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2394 | break; |
2395 | case '^': | |
3280af22 | 2396 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2397 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
f776e3cd | 2398 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); |
79072805 LW |
2399 | break; |
2400 | case '~': | |
3280af22 | 2401 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2402 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
f776e3cd | 2403 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); |
79072805 LW |
2404 | break; |
2405 | case '=': | |
38ab35f8 | 2406 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2407 | break; |
2408 | case '-': | |
38ab35f8 | 2409 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
3280af22 NIS |
2410 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
2411 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
2412 | break; |
2413 | case '%': | |
38ab35f8 | 2414 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2415 | break; |
2416 | case '|': | |
4b65379b | 2417 | { |
8772537c | 2418 | IO * const io = GvIOp(PL_defoutgv); |
720f287d AB |
2419 | if(!io) |
2420 | break; | |
38ab35f8 | 2421 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2422 | IoFLAGS(io) &= ~IOf_FLUSH; |
2423 | else { | |
2424 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2425 | PerlIO *ofp = IoOFP(io); | |
2426 | if (ofp) | |
2427 | (void)PerlIO_flush(ofp); | |
2428 | IoFLAGS(io) |= IOf_FLUSH; | |
2429 | } | |
2430 | } | |
79072805 LW |
2431 | } |
2432 | break; | |
79072805 | 2433 | case '/': |
3280af22 | 2434 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2435 | PL_rs = newSVsv(sv); |
79072805 LW |
2436 | break; |
2437 | case '\\': | |
7889fe52 NIS |
2438 | if (PL_ors_sv) |
2439 | SvREFCNT_dec(PL_ors_sv); | |
009c130f | 2440 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2441 | PL_ors_sv = newSVsv(sv); |
009c130f | 2442 | } |
e3c19b7b | 2443 | else { |
a0714e2c | 2444 | PL_ors_sv = NULL; |
e3c19b7b | 2445 | } |
79072805 LW |
2446 | break; |
2447 | case ',': | |
7889fe52 NIS |
2448 | if (PL_ofs_sv) |
2449 | SvREFCNT_dec(PL_ofs_sv); | |
2450 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2451 | PL_ofs_sv = newSVsv(sv); | |
2452 | } | |
2453 | else { | |
a0714e2c | 2454 | PL_ofs_sv = NULL; |
7889fe52 | 2455 | } |
79072805 | 2456 | break; |
79072805 | 2457 | case '[': |
38ab35f8 | 2458 | CopARYBASE_set(&PL_compiling, SvIV(sv)); |
79072805 LW |
2459 | break; |
2460 | case '?': | |
ff0cee69 | 2461 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
2462 | if (PL_localizing == 2) { |
2463 | PL_statusvalue = LvTARGOFF(sv); | |
2464 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2465 | } |
2466 | else | |
2467 | #endif | |
2468 | #ifdef VMSISH_STATUS | |
2469 | if (VMSISH_STATUS) | |
fb38d079 | 2470 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2471 | else |
2472 | #endif | |
38ab35f8 | 2473 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2474 | break; |
2475 | case '!': | |
93189314 JH |
2476 | { |
2477 | #ifdef VMS | |
2478 | # define PERL_VMS_BANG vaxc$errno | |
2479 | #else | |
2480 | # define PERL_VMS_BANG 0 | |
2481 | #endif | |
91487cfc | 2482 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2483 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2484 | } | |
79072805 LW |
2485 | break; |
2486 | case '<': | |
38ab35f8 | 2487 | PL_uid = SvIV(sv); |
3280af22 NIS |
2488 | if (PL_delaymagic) { |
2489 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2490 | break; /* don't do magic till later */ |
2491 | } | |
2492 | #ifdef HAS_SETRUID | |
b28d0864 | 2493 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2494 | #else |
2495 | #ifdef HAS_SETREUID | |
3280af22 | 2496 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2497 | #else |
85e6fe83 | 2498 | #ifdef HAS_SETRESUID |
b28d0864 | 2499 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2500 | #else |
75870ed3 | 2501 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2502 | #ifdef PERL_DARWIN | |
2503 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2504 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2505 | (void)PerlProc_setuid(0); | |
2506 | #endif | |
b28d0864 | 2507 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2508 | } else { |
d8eceb89 | 2509 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2510 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2511 | } |
79072805 LW |
2512 | #endif |
2513 | #endif | |
85e6fe83 | 2514 | #endif |
d8eceb89 | 2515 | PL_uid = PerlProc_getuid(); |
3280af22 | 2516 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2517 | break; |
2518 | case '>': | |
38ab35f8 | 2519 | PL_euid = SvIV(sv); |
3280af22 NIS |
2520 | if (PL_delaymagic) { |
2521 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2522 | break; /* don't do magic till later */ |
2523 | } | |
2524 | #ifdef HAS_SETEUID | |
3280af22 | 2525 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2526 | #else |
2527 | #ifdef HAS_SETREUID | |
b28d0864 | 2528 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2529 | #else |
2530 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2531 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2532 | #else |
b28d0864 NIS |
2533 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2534 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2535 | else { |
e8ee3774 | 2536 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2537 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2538 | } |
79072805 LW |
2539 | #endif |
2540 | #endif | |
85e6fe83 | 2541 | #endif |
d8eceb89 | 2542 | PL_euid = PerlProc_geteuid(); |
3280af22 | 2543 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2544 | break; |
2545 | case '(': | |
38ab35f8 | 2546 | PL_gid = SvIV(sv); |
3280af22 NIS |
2547 | if (PL_delaymagic) { |
2548 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2549 | break; /* don't do magic till later */ |
2550 | } | |
2551 | #ifdef HAS_SETRGID | |
b28d0864 | 2552 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2553 | #else |
2554 | #ifdef HAS_SETREGID | |
3280af22 | 2555 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2556 | #else |
2557 | #ifdef HAS_SETRESGID | |
b28d0864 | 2558 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2559 | #else |
b28d0864 NIS |
2560 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2561 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2562 | else { |
d8eceb89 | 2563 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2564 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2565 | } |
79072805 LW |
2566 | #endif |
2567 | #endif | |
85e6fe83 | 2568 | #endif |
d8eceb89 | 2569 | PL_gid = PerlProc_getgid(); |
3280af22 | 2570 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2571 | break; |
2572 | case ')': | |
5cd24f17 | 2573 | #ifdef HAS_SETGROUPS |
2574 | { | |
b83604b4 | 2575 | const char *p = SvPV_const(sv, len); |
757f63d8 SP |
2576 | Groups_t *gary = NULL; |
2577 | ||
2578 | while (isSPACE(*p)) | |
2579 | ++p; | |
2580 | PL_egid = Atol(p); | |
2581 | for (i = 0; i < NGROUPS; ++i) { | |
2582 | while (*p && !isSPACE(*p)) | |
2583 | ++p; | |
2584 | while (isSPACE(*p)) | |
2585 | ++p; | |
2586 | if (!*p) | |
2587 | break; | |
2588 | if(!gary) | |
2589 | Newx(gary, i + 1, Groups_t); | |
2590 | else | |
2591 | Renew(gary, i + 1, Groups_t); | |
2592 | gary[i] = Atol(p); | |
2593 | } | |
2594 | if (i) | |
2595 | (void)setgroups(i, gary); | |
f5a63d97 | 2596 | Safefree(gary); |
5cd24f17 | 2597 | } |
2598 | #else /* HAS_SETGROUPS */ | |
38ab35f8 | 2599 | PL_egid = SvIV(sv); |
5cd24f17 | 2600 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2601 | if (PL_delaymagic) { |
2602 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2603 | break; /* don't do magic till later */ |
2604 | } | |
2605 | #ifdef HAS_SETEGID | |
3280af22 | 2606 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2607 | #else |
2608 | #ifdef HAS_SETREGID | |
b28d0864 | 2609 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2610 | #else |
2611 | #ifdef HAS_SETRESGID | |
b28d0864 | 2612 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2613 | #else |
b28d0864 NIS |
2614 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2615 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2616 | else { |
d8eceb89 | 2617 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2618 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2619 | } |
79072805 LW |
2620 | #endif |
2621 | #endif | |
85e6fe83 | 2622 | #endif |
d8eceb89 | 2623 | PL_egid = PerlProc_getegid(); |
3280af22 | 2624 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2625 | break; |
2626 | case ':': | |
2d8e6c8d | 2627 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2628 | break; |
cd39f2b6 | 2629 | #ifndef MACOS_TRADITIONAL |
79072805 | 2630 | case '0': |
e2975953 | 2631 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2632 | #ifdef HAS_SETPROCTITLE |
2633 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2634 | * show a string from the process struct and provide | |
2635 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2636 | if (PL_origalen != 1) { |
b83604b4 | 2637 | s = SvPV_const(sv, len); |
98b76f99 | 2638 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2639 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2640 | * but not the "(perl) suffix from the ps(1) |
2641 | * output, because that's what ps(1) shows if the | |
2642 | * argv[] is modified. */ | |
6f2ad931 | 2643 | setproctitle("-%s", s); |
9aad2c0e | 2644 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2645 | /* This doesn't really work if you assume that |
2646 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2647 | * because in ps(1) output the result will be like | |
2648 | * sprintf("perl: %s (perl)", s) | |
2649 | * I guess this is a security feature: | |
2650 | * one (a user process) cannot get rid of the original name. | |
2651 | * --jhi */ | |
2652 | setproctitle("%s", s); | |
2653 | # endif | |
2654 | } | |
9d3968b2 | 2655 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2656 | if (PL_origalen != 1) { |
17aa7f3d | 2657 | union pstun un; |
b83604b4 | 2658 | s = SvPV_const(sv, len); |
6867be6d | 2659 | un.pst_command = (char *)s; |
17aa7f3d JH |
2660 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2661 | } | |
9d3968b2 | 2662 | #else |
2d2af554 GA |
2663 | if (PL_origalen > 1) { |
2664 | /* PL_origalen is set in perl_parse(). */ | |
2665 | s = SvPV_force(sv,len); | |
2666 | if (len >= (STRLEN)PL_origalen-1) { | |
2667 | /* Longer than original, will be truncated. We assume that | |
2668 | * PL_origalen bytes are available. */ | |
2669 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
2670 | } | |
2671 | else { | |
2672 | /* Shorter than original, will be padded. */ | |
235ac35d | 2673 | #ifdef PERL_DARWIN |
60777a0d JH |
2674 | /* Special case for Mac OS X: see [perl #38868] */ |
2675 | const int pad = 0; | |
235ac35d | 2676 | #else |
8a89a4f1 MB |
2677 | /* Is the space counterintuitive? Yes. |
2678 | * (You were expecting \0?) | |
2679 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
2680 | * --jhi */ | |
60777a0d | 2681 | const int pad = ' '; |
235ac35d | 2682 | #endif |
60777a0d JH |
2683 | Copy(s, PL_origargv[0], len, char); |
2684 | PL_origargv[0][len] = 0; | |
2685 | memset(PL_origargv[0] + len + 1, | |
2686 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
2687 | } |
2688 | PL_origargv[0][PL_origalen-1] = 0; | |
2689 | for (i = 1; i < PL_origargc; i++) | |
2690 | PL_origargv[i] = 0; | |
79072805 | 2691 | } |
9d3968b2 | 2692 | #endif |
e2975953 | 2693 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 | 2694 | break; |
cd39f2b6 | 2695 | #endif |
79072805 LW |
2696 | } |
2697 | return 0; | |
2698 | } | |
2699 | ||
2700 | I32 | |
35a4481c | 2701 | Perl_whichsig(pTHX_ const char *sig) |
79072805 | 2702 | { |
aadb217d | 2703 | register char* const* sigv; |
96a5add6 | 2704 | PERL_UNUSED_CONTEXT; |
79072805 | 2705 | |
aadb217d | 2706 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
79072805 | 2707 | if (strEQ(sig,*sigv)) |
aadb217d | 2708 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 LW |
2709 | #ifdef SIGCLD |
2710 | if (strEQ(sig,"CHLD")) | |
2711 | return SIGCLD; | |
2712 | #endif | |
2713 | #ifdef SIGCHLD | |
2714 | if (strEQ(sig,"CLD")) | |
2715 | return SIGCHLD; | |
2716 | #endif | |
7f1236c0 | 2717 | return -1; |
79072805 LW |
2718 | } |
2719 | ||
ecfc5424 | 2720 | Signal_t |
1e82f5a6 | 2721 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
8aad04aa | 2722 | Perl_sighandler(int sig, ...) |
1e82f5a6 SH |
2723 | #else |
2724 | Perl_sighandler(int sig) | |
2725 | #endif | |
79072805 | 2726 | { |
1018e26f NIS |
2727 | #ifdef PERL_GET_SIG_CONTEXT |
2728 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 2729 | #else |
cea2e8a9 | 2730 | dTHX; |
71d280e3 | 2731 | #endif |
79072805 | 2732 | dSP; |
a0714e2c SS |
2733 | GV *gv = NULL; |
2734 | SV *sv = NULL; | |
8772537c | 2735 | SV * const tSv = PL_Sv; |
601f1833 | 2736 | CV *cv = NULL; |
533c011a | 2737 | OP *myop = PL_op; |
84902520 | 2738 | U32 flags = 0; |
8772537c | 2739 | XPV * const tXpv = PL_Xpv; |
71d280e3 | 2740 | |
3280af22 | 2741 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2742 | flags |= 1; |
3280af22 | 2743 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2744 | flags |= 4; |
3280af22 | 2745 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2746 | flags |= 16; |
2747 | ||
727405f8 | 2748 | if (!PL_psig_ptr[sig]) { |
99ef548b | 2749 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
2750 | PL_sig_name[sig]); |
2751 | exit(sig); | |
2752 | } | |
ff0cee69 | 2753 | |
84902520 TB |
2754 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2755 | infinity, so we fix 4 (in fact 5): */ | |
2756 | if (flags & 1) { | |
3280af22 | 2757 | PL_savestack_ix += 5; /* Protect save in progress. */ |
8772537c | 2758 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, (void*)&flags); |
84902520 | 2759 | } |
ac27b0f5 | 2760 | if (flags & 4) |
3280af22 | 2761 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2762 | if (flags & 16) |
3280af22 | 2763 | PL_scopestack_ix += 1; |
84902520 | 2764 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ac27b0f5 | 2765 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
8772537c AL |
2766 | || SvTYPE(cv) != SVt_PVCV) { |
2767 | HV *st; | |
f2c0649b | 2768 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 2769 | } |
84902520 | 2770 | |
a0d0e21e | 2771 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2772 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 2773 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2774 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2775 | : ((cv && CvGV(cv)) |
2776 | ? GvENAME(CvGV(cv)) | |
2777 | : "__ANON__"))); | |
2778 | goto cleanup; | |
79072805 LW |
2779 | } |
2780 | ||
22c35a8c | 2781 | if(PL_psig_name[sig]) { |
b37c2d43 | 2782 | sv = SvREFCNT_inc_NN(PL_psig_name[sig]); |
84902520 | 2783 | flags |= 64; |
df3728a2 | 2784 | #if !defined(PERL_IMPLICIT_CONTEXT) |
27da23d5 | 2785 | PL_sig_sv = sv; |
df3728a2 | 2786 | #endif |
84902520 | 2787 | } else { |
ff0cee69 | 2788 | sv = sv_newmortal(); |
22c35a8c | 2789 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2790 | } |
e336de0d | 2791 | |
e788e7d3 | 2792 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2793 | PUSHMARK(SP); |
79072805 | 2794 | PUSHs(sv); |
8aad04aa JH |
2795 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
2796 | { | |
2797 | struct sigaction oact; | |
2798 | ||
2799 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
2800 | siginfo_t *sip; | |
2801 | va_list args; | |
2802 | ||
2803 | va_start(args, sig); | |
2804 | sip = (siginfo_t*)va_arg(args, siginfo_t*); | |
2805 | if (sip) { | |
2806 | HV *sih = newHV(); | |
2807 | SV *rv = newRV_noinc((SV*)sih); | |
2808 | /* The siginfo fields signo, code, errno, pid, uid, | |
2809 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
2810 | hv_store(sih, "signo", 5, newSViv(sip->si_signo), 0); | |
2811 | hv_store(sih, "code", 4, newSViv(sip->si_code), 0); | |
79dec0f4 | 2812 | #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. */ |
ea1bde16 | 2813 | hv_store(sih, "errno", 5, newSViv(sip->si_errno), 0); |
79dec0f4 | 2814 | hv_store(sih, "status", 6, newSViv(sip->si_status), 0); |
8aad04aa JH |
2815 | hv_store(sih, "uid", 3, newSViv(sip->si_uid), 0); |
2816 | hv_store(sih, "pid", 3, newSViv(sip->si_pid), 0); | |
2817 | hv_store(sih, "addr", 4, newSVuv(PTR2UV(sip->si_addr)), 0); | |
8aad04aa | 2818 | hv_store(sih, "band", 4, newSViv(sip->si_band), 0); |
79dec0f4 | 2819 | #endif |
8aad04aa JH |
2820 | EXTEND(SP, 2); |
2821 | PUSHs((SV*)rv); | |
10edeb5d | 2822 | PUSHs(newSVpv((char *)sip, sizeof(*sip))); |
8aad04aa | 2823 | } |
b4552a27 | 2824 | |
31427afe | 2825 | va_end(args); |
8aad04aa JH |
2826 | } |
2827 | } | |
2828 | #endif | |
79072805 | 2829 | PUTBACK; |
a0d0e21e | 2830 | |
1b266415 | 2831 | call_sv((SV*)cv, G_DISCARD|G_EVAL); |
79072805 | 2832 | |
d3acc0f7 | 2833 | POPSTACK; |
1b266415 | 2834 | if (SvTRUE(ERRSV)) { |
1d615522 | 2835 | #ifndef PERL_MICRO |
983dbef6 | 2836 | #ifdef HAS_SIGPROCMASK |
1b266415 NIS |
2837 | /* Handler "died", for example to get out of a restart-able read(). |
2838 | * Before we re-do that on its behalf re-enable the signal which was | |
2839 | * blocked by the system when we entered. | |
2840 | */ | |
2841 | sigset_t set; | |
2842 | sigemptyset(&set); | |
2843 | sigaddset(&set,sig); | |
2844 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
2845 | #else | |
2846 | /* Not clear if this will work */ | |
2847 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 2848 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 | 2849 | #endif |
1d615522 | 2850 | #endif /* !PERL_MICRO */ |
bd61b366 | 2851 | Perl_die(aTHX_ NULL); |
1b266415 | 2852 | } |
00d579c5 | 2853 | cleanup: |
84902520 | 2854 | if (flags & 1) |
3280af22 | 2855 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 | 2856 | if (flags & 4) |
3280af22 | 2857 | PL_markstack_ptr--; |
84902520 | 2858 | if (flags & 16) |
3280af22 | 2859 | PL_scopestack_ix -= 1; |
84902520 TB |
2860 | if (flags & 64) |
2861 | SvREFCNT_dec(sv); | |
533c011a | 2862 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 2863 | |
3280af22 NIS |
2864 | PL_Sv = tSv; /* Restore global temporaries. */ |
2865 | PL_Xpv = tXpv; | |
53bb94e2 | 2866 | return; |
79072805 | 2867 | } |
4e35701f NIS |
2868 | |
2869 | ||
51371543 | 2870 | static void |
8772537c | 2871 | S_restore_magic(pTHX_ const void *p) |
51371543 | 2872 | { |
97aff369 | 2873 | dVAR; |
8772537c AL |
2874 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
2875 | SV* const sv = mgs->mgs_sv; | |
51371543 GS |
2876 | |
2877 | if (!sv) | |
2878 | return; | |
2879 | ||
2880 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2881 | { | |
f8c7b90f | 2882 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
2883 | /* While magic was saved (and off) sv_setsv may well have seen |
2884 | this SV as a prime candidate for COW. */ | |
2885 | if (SvIsCOW(sv)) | |
e424a81e | 2886 | sv_force_normal_flags(sv, 0); |
f9701176 NC |
2887 | #endif |
2888 | ||
51371543 GS |
2889 | if (mgs->mgs_flags) |
2890 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2891 | else | |
2892 | mg_magical(sv); | |
2b77b520 YST |
2893 | if (SvGMAGICAL(sv)) { |
2894 | /* downgrade public flags to private, | |
2895 | and discard any other private flags */ | |
2896 | ||
10edeb5d JH |
2897 | const U32 pubflags = SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK); |
2898 | if (pubflags) { | |
2899 | SvFLAGS(sv) &= ~( pubflags | (SVp_IOK|SVp_NOK|SVp_POK) ); | |
2900 | SvFLAGS(sv) |= ( pubflags << PRIVSHIFT ); | |
2b77b520 YST |
2901 | } |
2902 | } | |
51371543 GS |
2903 | } |
2904 | ||
2905 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2906 | ||
2907 | /* If we're still on top of the stack, pop us off. (That condition | |
2908 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2909 | * if it's being called via leave_scope.) | |
2910 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2911 | * may leave alloc gunk on the savestack, and some code | |
2912 | * (e.g. sighandler) doesn't expect that... | |
2913 | */ | |
2914 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2915 | { | |
2916 | I32 popval = SSPOPINT; | |
c76ac1ee | 2917 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2918 | PL_savestack_ix -= 2; |
2919 | popval = SSPOPINT; | |
2920 | assert(popval == SAVEt_ALLOC); | |
2921 | popval = SSPOPINT; | |
2922 | PL_savestack_ix -= popval; | |
2923 | } | |
2924 | ||
2925 | } | |
2926 | ||
2927 | static void | |
8772537c | 2928 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 2929 | { |
27da23d5 | 2930 | dVAR; |
e1ec3a88 | 2931 | const U32 flags = *(const U32*)p; |
51371543 GS |
2932 | |
2933 | if (flags & 1) | |
2934 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
df3728a2 | 2935 | #if !defined(PERL_IMPLICIT_CONTEXT) |
51371543 | 2936 | if (flags & 64) |
27da23d5 | 2937 | SvREFCNT_dec(PL_sig_sv); |
df3728a2 | 2938 | #endif |
51371543 | 2939 | } |
1018e26f | 2940 | |
66610fdd | 2941 | /* |
b3ca2e83 NC |
2942 | =for apidoc magic_sethint |
2943 | ||
2944 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
2945 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
2946 | anything that would need a deep copy. Maybe we should warn if we find a | |
2947 | reference. | |
b3ca2e83 NC |
2948 | |
2949 | =cut | |
2950 | */ | |
2951 | int | |
2952 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
2953 | { | |
2954 | dVAR; | |
2955 | assert(mg->mg_len == HEf_SVKEY); | |
2956 | ||
e6e3e454 NC |
2957 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
2958 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
2959 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
2960 | or take other more complex action. */ | |
2961 | ||
5b9c0671 NC |
2962 | /* Something changed in %^H, so it will need to be restored on scope exit. |
2963 | Doing this here saves a lot of doing it manually in perl code (and | |
2964 | forgetting to do it, and consequent subtle errors. */ | |
2965 | PL_hints |= HINT_LOCALIZE_HH; | |
c28fe1ec NC |
2966 | PL_compiling.cop_hints_hash |
2967 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
ec2a1de7 | 2968 | (SV *)mg->mg_ptr, sv); |
b3ca2e83 NC |
2969 | return 0; |
2970 | } | |
2971 | ||
2972 | /* | |
2973 | =for apidoc magic_sethint | |
2974 | ||
c28fe1ec NC |
2975 | Triggered by a delete from %^H, records the key to |
2976 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
2977 | |
2978 | =cut | |
2979 | */ | |
2980 | int | |
2981 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
2982 | { | |
2983 | dVAR; | |
f5a63d97 AL |
2984 | PERL_UNUSED_ARG(sv); |
2985 | ||
b3ca2e83 NC |
2986 | assert(mg->mg_len == HEf_SVKEY); |
2987 | ||
b3f24c00 MHM |
2988 | PERL_UNUSED_ARG(sv); |
2989 | ||
5b9c0671 | 2990 | PL_hints |= HINT_LOCALIZE_HH; |
c28fe1ec NC |
2991 | PL_compiling.cop_hints_hash |
2992 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
b3ca2e83 NC |
2993 | (SV *)mg->mg_ptr, &PL_sv_placeholder); |
2994 | return 0; | |
2995 | } | |
2996 | ||
2997 | /* | |
66610fdd RGS |
2998 | * Local variables: |
2999 | * c-indentation-style: bsd | |
3000 | * c-basic-offset: 4 | |
3001 | * indent-tabs-mode: t | |
3002 | * End: | |
3003 | * | |
37442d52 RGS |
3004 | * ex: set ts=8 sts=4 sw=4 noet: |
3005 | */ |