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 | ||
954c1994 GS |
135 | /* |
136 | =for apidoc mg_get | |
137 | ||
138 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
139 | ||
140 | =cut | |
141 | */ | |
142 | ||
79072805 | 143 | int |
864dbfa3 | 144 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 145 | { |
97aff369 | 146 | dVAR; |
35a4481c | 147 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
fe2774ed | 148 | const bool was_temp = (bool)SvTEMP(sv); |
0723351e | 149 | int have_new = 0; |
ff76feab | 150 | MAGIC *newmg, *head, *cur, *mg; |
20135930 | 151 | /* guard against sv having being freed midway by holding a private |
6683b158 NC |
152 | reference. */ |
153 | ||
154 | /* sv_2mortal has this side effect of turning on the TEMP flag, which can | |
155 | cause the SV's buffer to get stolen (and maybe other stuff). | |
156 | So restore it. | |
157 | */ | |
46da273f | 158 | sv_2mortal(SvREFCNT_inc_simple_NN(sv)); |
6683b158 NC |
159 | if (!was_temp) { |
160 | SvTEMP_off(sv); | |
161 | } | |
162 | ||
455ece5e | 163 | save_magic(mgs_ix, sv); |
463ee0b2 | 164 | |
ff76feab AMS |
165 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
166 | list of magic. svt_get() may delete the current entry, add new | |
167 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
168 | ||
169 | newmg = cur = head = mg = SvMAGIC(sv); | |
170 | while (mg) { | |
35a4481c | 171 | const MGVTBL * const vtbl = mg->mg_virtual; |
ff76feab | 172 | |
2b260de0 | 173 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
316ad4fe | 174 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
b77f7d40 | 175 | |
58f82c5c DM |
176 | /* guard against magic having been deleted - eg FETCH calling |
177 | * untie */ | |
178 | if (!SvMAGIC(sv)) | |
179 | break; | |
b77f7d40 | 180 | |
ff76feab AMS |
181 | /* Don't restore the flags for this entry if it was deleted. */ |
182 | if (mg->mg_flags & MGf_GSKIP) | |
183 | (SSPTR(mgs_ix, MGS *))->mgs_flags = 0; | |
a0d0e21e | 184 | } |
ff76feab AMS |
185 | |
186 | mg = mg->mg_moremagic; | |
187 | ||
0723351e | 188 | if (have_new) { |
ff76feab AMS |
189 | /* Have we finished with the new entries we saw? Start again |
190 | where we left off (unless there are more new entries). */ | |
191 | if (mg == head) { | |
0723351e | 192 | have_new = 0; |
ff76feab AMS |
193 | mg = cur; |
194 | head = newmg; | |
195 | } | |
196 | } | |
197 | ||
198 | /* Were any new entries added? */ | |
0723351e NC |
199 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
200 | have_new = 1; | |
ff76feab AMS |
201 | cur = mg; |
202 | mg = newmg; | |
760ac839 | 203 | } |
79072805 | 204 | } |
463ee0b2 | 205 | |
8772537c | 206 | restore_magic(INT2PTR(void *, (IV)mgs_ix)); |
6683b158 NC |
207 | |
208 | if (SvREFCNT(sv) == 1) { | |
209 | /* We hold the last reference to this SV, which implies that the | |
210 | SV was deleted as a side effect of the routines we called. */ | |
0c34ef67 | 211 | SvOK_off(sv); |
6683b158 | 212 | } |
79072805 LW |
213 | return 0; |
214 | } | |
215 | ||
954c1994 GS |
216 | /* |
217 | =for apidoc mg_set | |
218 | ||
219 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
220 | ||
221 | =cut | |
222 | */ | |
223 | ||
79072805 | 224 | int |
864dbfa3 | 225 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 226 | { |
97aff369 | 227 | dVAR; |
35a4481c | 228 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 229 | MAGIC* mg; |
463ee0b2 LW |
230 | MAGIC* nextmg; |
231 | ||
455ece5e | 232 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
233 | |
234 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 235 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 236 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
237 | if (mg->mg_flags & MGf_GSKIP) { |
238 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
455ece5e | 239 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 240 | } |
2b260de0 | 241 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 | 242 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 | 243 | } |
463ee0b2 | 244 | |
8772537c | 245 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
246 | return 0; |
247 | } | |
248 | ||
954c1994 GS |
249 | /* |
250 | =for apidoc mg_length | |
251 | ||
252 | Report on the SV's length. See C<sv_magic>. | |
253 | ||
254 | =cut | |
255 | */ | |
256 | ||
79072805 | 257 | U32 |
864dbfa3 | 258 | Perl_mg_length(pTHX_ SV *sv) |
79072805 | 259 | { |
97aff369 | 260 | dVAR; |
79072805 | 261 | MAGIC* mg; |
463ee0b2 | 262 | STRLEN len; |
463ee0b2 | 263 | |
79072805 | 264 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 265 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 266 | if (vtbl && vtbl->svt_len) { |
35a4481c | 267 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 268 | save_magic(mgs_ix, sv); |
a0d0e21e | 269 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 270 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c | 271 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
272 | return len; |
273 | } | |
274 | } | |
275 | ||
35a4481c | 276 | if (DO_UTF8(sv)) { |
10516c54 | 277 | const U8 *s = (U8*)SvPV_const(sv, len); |
f5a63d97 | 278 | len = utf8_length(s, s + len); |
5636d518 DB |
279 | } |
280 | else | |
10516c54 | 281 | (void)SvPV_const(sv, len); |
463ee0b2 | 282 | return len; |
79072805 LW |
283 | } |
284 | ||
8fb26106 | 285 | I32 |
864dbfa3 | 286 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
287 | { |
288 | MAGIC* mg; | |
ac27b0f5 | 289 | |
93965878 | 290 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 291 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 292 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
293 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
294 | I32 len; | |
455ece5e | 295 | save_magic(mgs_ix, sv); |
93965878 | 296 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 297 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
8772537c | 298 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
299 | return len; |
300 | } | |
301 | } | |
302 | ||
303 | switch(SvTYPE(sv)) { | |
304 | case SVt_PVAV: | |
35a4481c | 305 | return AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
306 | case SVt_PVHV: |
307 | /* FIXME */ | |
308 | default: | |
cea2e8a9 | 309 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
310 | break; |
311 | } | |
312 | return 0; | |
313 | } | |
314 | ||
954c1994 GS |
315 | /* |
316 | =for apidoc mg_clear | |
317 | ||
318 | Clear something magical that the SV represents. See C<sv_magic>. | |
319 | ||
320 | =cut | |
321 | */ | |
322 | ||
79072805 | 323 | int |
864dbfa3 | 324 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 325 | { |
35a4481c | 326 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 327 | MAGIC* mg; |
463ee0b2 | 328 | |
455ece5e | 329 | save_magic(mgs_ix, sv); |
463ee0b2 | 330 | |
79072805 | 331 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 332 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 333 | /* omit GSKIP -- never set here */ |
727405f8 | 334 | |
2b260de0 | 335 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 | 336 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 337 | } |
463ee0b2 | 338 | |
8772537c | 339 | restore_magic(INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
340 | return 0; |
341 | } | |
342 | ||
954c1994 GS |
343 | /* |
344 | =for apidoc mg_find | |
345 | ||
346 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
347 | ||
348 | =cut | |
349 | */ | |
350 | ||
93a17b20 | 351 | MAGIC* |
35a4481c | 352 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 353 | { |
96a5add6 | 354 | PERL_UNUSED_CONTEXT; |
35a4481c AL |
355 | if (sv) { |
356 | MAGIC *mg; | |
357 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
358 | if (mg->mg_type == type) | |
359 | return mg; | |
360 | } | |
93a17b20 | 361 | } |
5f66b61c | 362 | return NULL; |
93a17b20 LW |
363 | } |
364 | ||
954c1994 GS |
365 | /* |
366 | =for apidoc mg_copy | |
367 | ||
368 | Copies the magic from one SV to another. See C<sv_magic>. | |
369 | ||
370 | =cut | |
371 | */ | |
372 | ||
79072805 | 373 | int |
864dbfa3 | 374 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 375 | { |
463ee0b2 | 376 | int count = 0; |
79072805 | 377 | MAGIC* mg; |
463ee0b2 | 378 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 379 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 NIS |
380 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
381 | count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen); | |
382 | } | |
823a54a3 AL |
383 | else { |
384 | const char type = mg->mg_type; | |
1e73acc8 | 385 | if (isUPPER(type) && type != PERL_MAGIC_uvar) { |
823a54a3 AL |
386 | sv_magic(nsv, |
387 | (type == PERL_MAGIC_tied) | |
388 | ? SvTIED_obj(sv, mg) | |
389 | : (type == PERL_MAGIC_regdata && mg->mg_obj) | |
390 | ? sv | |
391 | : mg->mg_obj, | |
392 | toLOWER(type), key, klen); | |
393 | count++; | |
394 | } | |
79072805 | 395 | } |
79072805 | 396 | } |
463ee0b2 | 397 | return count; |
79072805 LW |
398 | } |
399 | ||
954c1994 | 400 | /* |
0cbee0a4 DM |
401 | =for apidoc mg_localize |
402 | ||
403 | Copy some of the magic from an existing SV to new localized version of | |
404 | that SV. Container magic (eg %ENV, $1, tie) gets copied, value magic | |
405 | doesn't (eg taint, pos). | |
406 | ||
407 | =cut | |
408 | */ | |
409 | ||
410 | void | |
411 | Perl_mg_localize(pTHX_ SV *sv, SV *nsv) | |
412 | { | |
97aff369 | 413 | dVAR; |
0cbee0a4 DM |
414 | MAGIC *mg; |
415 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
92e67595 | 416 | MGVTBL* const vtbl = mg->mg_virtual; |
0cbee0a4 DM |
417 | switch (mg->mg_type) { |
418 | /* value magic types: don't copy */ | |
419 | case PERL_MAGIC_bm: | |
420 | case PERL_MAGIC_fm: | |
421 | case PERL_MAGIC_regex_global: | |
422 | case PERL_MAGIC_nkeys: | |
423 | #ifdef USE_LOCALE_COLLATE | |
424 | case PERL_MAGIC_collxfrm: | |
425 | #endif | |
426 | case PERL_MAGIC_qr: | |
427 | case PERL_MAGIC_taint: | |
428 | case PERL_MAGIC_vec: | |
429 | case PERL_MAGIC_vstring: | |
430 | case PERL_MAGIC_utf8: | |
431 | case PERL_MAGIC_substr: | |
432 | case PERL_MAGIC_defelem: | |
433 | case PERL_MAGIC_arylen: | |
434 | case PERL_MAGIC_pos: | |
435 | case PERL_MAGIC_backref: | |
436 | case PERL_MAGIC_arylen_p: | |
437 | case PERL_MAGIC_rhash: | |
438 | case PERL_MAGIC_symtab: | |
439 | continue; | |
440 | } | |
441 | ||
a5063e7c DM |
442 | if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local) |
443 | (void)CALL_FPTR(vtbl->svt_local)(aTHX_ nsv, mg); | |
444 | else | |
0cbee0a4 DM |
445 | sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl, |
446 | mg->mg_ptr, mg->mg_len); | |
a5063e7c | 447 | |
0cbee0a4 DM |
448 | /* container types should remain read-only across localization */ |
449 | SvFLAGS(nsv) |= SvREADONLY(sv); | |
450 | } | |
451 | ||
452 | if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) { | |
453 | SvFLAGS(nsv) |= SvMAGICAL(sv); | |
454 | PL_localizing = 1; | |
455 | SvSETMAGIC(nsv); | |
456 | PL_localizing = 0; | |
457 | } | |
458 | } | |
459 | ||
460 | /* | |
954c1994 GS |
461 | =for apidoc mg_free |
462 | ||
463 | Free any magic storage used by the SV. See C<sv_magic>. | |
464 | ||
465 | =cut | |
466 | */ | |
467 | ||
79072805 | 468 | int |
864dbfa3 | 469 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
470 | { |
471 | MAGIC* mg; | |
472 | MAGIC* moremagic; | |
473 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
35a4481c | 474 | const MGVTBL* const vtbl = mg->mg_virtual; |
79072805 | 475 | moremagic = mg->mg_moremagic; |
2b260de0 | 476 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 477 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 478 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
979acdb5 | 479 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) |
88e89b8a | 480 | Safefree(mg->mg_ptr); |
565764a8 | 481 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 482 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d460ef45 | 483 | } |
b881518d JH |
484 | if (mg->mg_flags & MGf_REFCOUNTED) |
485 | SvREFCNT_dec(mg->mg_obj); | |
79072805 LW |
486 | Safefree(mg); |
487 | } | |
b162af07 | 488 | SvMAGIC_set(sv, NULL); |
79072805 LW |
489 | return 0; |
490 | } | |
491 | ||
79072805 | 492 | #include <signal.h> |
79072805 | 493 | |
942e002e | 494 | U32 |
864dbfa3 | 495 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 496 | { |
97aff369 | 497 | dVAR; |
8772537c | 498 | PERL_UNUSED_ARG(sv); |
6cef1e77 | 499 | |
0bd48802 AL |
500 | if (PL_curpm) { |
501 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
502 | if (rx) { | |
a678b0e4 YO |
503 | if (mg->mg_obj) { /* @+ */ |
504 | /* return the number possible */ | |
505 | return rx->nparens; | |
506 | } else { /* @- */ | |
507 | I32 paren = rx->lastparen; | |
508 | ||
509 | /* return the last filled */ | |
f46c4081 RGS |
510 | while ( paren >= 0 |
511 | && (rx->startp[paren] == -1 || rx->endp[paren] == -1) ) | |
512 | paren--; | |
a678b0e4 YO |
513 | return (U32)paren; |
514 | } | |
0bd48802 | 515 | } |
8f580fb8 | 516 | } |
ac27b0f5 | 517 | |
942e002e | 518 | return (U32)-1; |
6cef1e77 IZ |
519 | } |
520 | ||
521 | int | |
864dbfa3 | 522 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 523 | { |
97aff369 | 524 | dVAR; |
0bd48802 AL |
525 | if (PL_curpm) { |
526 | register const REGEXP * const rx = PM_GETRE(PL_curpm); | |
527 | if (rx) { | |
528 | register const I32 paren = mg->mg_len; | |
529 | register I32 s; | |
530 | register I32 t; | |
531 | if (paren < 0) | |
532 | return 0; | |
533 | if (paren <= (I32)rx->nparens && | |
534 | (s = rx->startp[paren]) != -1 && | |
535 | (t = rx->endp[paren]) != -1) | |
536 | { | |
537 | register I32 i; | |
538 | if (mg->mg_obj) /* @+ */ | |
539 | i = t; | |
540 | else /* @- */ | |
541 | i = s; | |
542 | ||
543 | if (i > 0 && RX_MATCH_UTF8(rx)) { | |
544 | const char * const b = rx->subbeg; | |
545 | if (b) | |
f5a63d97 | 546 | i = utf8_length((U8*)b, (U8*)(b+i)); |
0bd48802 | 547 | } |
727405f8 | 548 | |
0bd48802 | 549 | sv_setiv(sv, i); |
1aa99e6b | 550 | } |
0bd48802 | 551 | } |
6cef1e77 IZ |
552 | } |
553 | return 0; | |
554 | } | |
555 | ||
e4b89193 | 556 | int |
a29d06ed MG |
557 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
558 | { | |
d4c19fe8 AL |
559 | PERL_UNUSED_ARG(sv); |
560 | PERL_UNUSED_ARG(mg); | |
a29d06ed | 561 | Perl_croak(aTHX_ PL_no_modify); |
0dbb1585 | 562 | NORETURN_FUNCTION_END; |
a29d06ed MG |
563 | } |
564 | ||
93a17b20 | 565 | U32 |
864dbfa3 | 566 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 567 | { |
97aff369 | 568 | dVAR; |
93a17b20 | 569 | register I32 paren; |
93a17b20 | 570 | register I32 i; |
dd374669 | 571 | register const REGEXP *rx; |
a197cbdd | 572 | I32 s1, t1; |
93a17b20 LW |
573 | |
574 | switch (*mg->mg_ptr) { | |
575 | case '1': case '2': case '3': case '4': | |
576 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 577 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d | 578 | |
ffc61ed2 | 579 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
93a17b20 | 580 | getparen: |
eb160463 | 581 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
582 | (s1 = rx->startp[paren]) != -1 && |
583 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 584 | { |
cf93c79d | 585 | i = t1 - s1; |
a197cbdd | 586 | getlen: |
a30b2f1f | 587 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
a28509cc | 588 | const char * const s = rx->subbeg + s1; |
768c67ee JH |
589 | const U8 *ep; |
590 | STRLEN el; | |
ffc61ed2 | 591 | |
6d5fa195 | 592 | i = t1 - s1; |
768c67ee JH |
593 | if (is_utf8_string_loclen((U8*)s, i, &ep, &el)) |
594 | i = el; | |
a197cbdd | 595 | } |
ffc61ed2 | 596 | if (i < 0) |
0844c848 | 597 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 598 | return i; |
93a17b20 | 599 | } |
235bddc8 NIS |
600 | else { |
601 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 602 | report_uninit(sv); |
235bddc8 NIS |
603 | } |
604 | } | |
605 | else { | |
606 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 607 | report_uninit(sv); |
93a17b20 | 608 | } |
748a9306 | 609 | return 0; |
93a17b20 | 610 | case '+': |
aaa362c4 | 611 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 | 612 | paren = rx->lastparen; |
13f57bf8 CS |
613 | if (paren) |
614 | goto getparen; | |
93a17b20 | 615 | } |
748a9306 | 616 | return 0; |
a01268b5 JH |
617 | case '\016': /* ^N */ |
618 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
619 | paren = rx->lastcloseparen; | |
620 | if (paren) | |
621 | goto getparen; | |
622 | } | |
623 | return 0; | |
93a17b20 | 624 | case '`': |
aaa362c4 | 625 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
626 | if (rx->startp[0] != -1) { |
627 | i = rx->startp[0]; | |
a197cbdd GS |
628 | if (i > 0) { |
629 | s1 = 0; | |
630 | t1 = i; | |
631 | goto getlen; | |
632 | } | |
93a17b20 | 633 | } |
93a17b20 | 634 | } |
748a9306 | 635 | return 0; |
93a17b20 | 636 | case '\'': |
aaa362c4 | 637 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
638 | if (rx->endp[0] != -1) { |
639 | i = rx->sublen - rx->endp[0]; | |
a197cbdd GS |
640 | if (i > 0) { |
641 | s1 = rx->endp[0]; | |
642 | t1 = rx->sublen; | |
643 | goto getlen; | |
644 | } | |
93a17b20 | 645 | } |
93a17b20 | 646 | } |
748a9306 | 647 | return 0; |
93a17b20 LW |
648 | } |
649 | magic_get(sv,mg); | |
2d8e6c8d | 650 | if (!SvPOK(sv) && SvNIOK(sv)) { |
8b6b16e7 | 651 | sv_2pv(sv, 0); |
2d8e6c8d | 652 | } |
93a17b20 LW |
653 | if (SvPOK(sv)) |
654 | return SvCUR(sv); | |
655 | return 0; | |
656 | } | |
657 | ||
ad3296c6 | 658 | #define SvRTRIM(sv) STMT_START { \ |
eae92ea0 GA |
659 | if (SvPOK(sv)) { \ |
660 | STRLEN len = SvCUR(sv); \ | |
661 | char * const p = SvPVX(sv); \ | |
8e6b4db6 PC |
662 | while (len > 0 && isSPACE(p[len-1])) \ |
663 | --len; \ | |
664 | SvCUR_set(sv, len); \ | |
665 | p[len] = '\0'; \ | |
666 | } \ | |
ad3296c6 SH |
667 | } STMT_END |
668 | ||
79072805 | 669 | int |
864dbfa3 | 670 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 671 | { |
27da23d5 | 672 | dVAR; |
79072805 | 673 | register I32 paren; |
35272f84 | 674 | register char *s = NULL; |
d9f97599 | 675 | register REGEXP *rx; |
823a54a3 AL |
676 | const char * const remaining = mg->mg_ptr + 1; |
677 | const char nextchar = *remaining; | |
79072805 LW |
678 | |
679 | switch (*mg->mg_ptr) { | |
748a9306 | 680 | case '\001': /* ^A */ |
3280af22 | 681 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 682 | break; |
e5218da5 | 683 | case '\003': /* ^C, ^CHILD_ERROR_NATIVE */ |
823a54a3 | 684 | if (nextchar == '\0') { |
e5218da5 GA |
685 | sv_setiv(sv, (IV)PL_minus_c); |
686 | } | |
823a54a3 | 687 | else if (strEQ(remaining, "HILD_ERROR_NATIVE")) { |
e5218da5 GA |
688 | sv_setiv(sv, (IV)STATUS_NATIVE); |
689 | } | |
49460fe6 NIS |
690 | break; |
691 | ||
79072805 | 692 | case '\004': /* ^D */ |
aea4f609 | 693 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 694 | break; |
28f23441 | 695 | case '\005': /* ^E */ |
823a54a3 | 696 | if (nextchar == '\0') { |
4b645107 | 697 | #if defined(MACOS_TRADITIONAL) |
0a378802 JH |
698 | { |
699 | char msg[256]; | |
727405f8 | 700 | |
0a378802 | 701 | sv_setnv(sv,(double)gMacPerl_OSErr); |
727405f8 | 702 | sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : ""); |
0a378802 | 703 | } |
4b645107 | 704 | #elif defined(VMS) |
0a378802 JH |
705 | { |
706 | # include <descrip.h> | |
707 | # include <starlet.h> | |
708 | char msg[255]; | |
709 | $DESCRIPTOR(msgdsc,msg); | |
710 | sv_setnv(sv,(NV) vaxc$errno); | |
711 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
712 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
713 | else | |
c69006e4 | 714 | sv_setpvn(sv,"",0); |
0a378802 | 715 | } |
4b645107 | 716 | #elif defined(OS2) |
0a378802 JH |
717 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
718 | sv_setnv(sv, (NV)errno); | |
719 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
720 | } else { | |
721 | if (errno != errno_isOS2) { | |
823a54a3 | 722 | const int tmp = _syserrno(); |
0a378802 JH |
723 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
724 | Perl_rc = tmp; | |
725 | } | |
726 | sv_setnv(sv, (NV)Perl_rc); | |
727 | sv_setpv(sv, os2error(Perl_rc)); | |
728 | } | |
4b645107 | 729 | #elif defined(WIN32) |
0a378802 | 730 | { |
d4c19fe8 | 731 | const DWORD dwErr = GetLastError(); |
0a378802 | 732 | sv_setnv(sv, (NV)dwErr); |
823a54a3 | 733 | if (dwErr) { |
0a378802 JH |
734 | PerlProc_GetOSError(sv, dwErr); |
735 | } | |
736 | else | |
c69006e4 | 737 | sv_setpvn(sv, "", 0); |
0a378802 JH |
738 | SetLastError(dwErr); |
739 | } | |
22fae026 | 740 | #else |
f6c8f21d | 741 | { |
8772537c | 742 | const int saveerrno = errno; |
f6c8f21d | 743 | sv_setnv(sv, (NV)errno); |
666ea192 | 744 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
f6c8f21d RGS |
745 | errno = saveerrno; |
746 | } | |
28f23441 | 747 | #endif |
ad3296c6 | 748 | SvRTRIM(sv); |
0a378802 JH |
749 | SvNOK_on(sv); /* what a wonderful hack! */ |
750 | } | |
823a54a3 | 751 | else if (strEQ(remaining, "NCODING")) |
0a378802 JH |
752 | sv_setsv(sv, PL_encoding); |
753 | break; | |
79072805 | 754 | case '\006': /* ^F */ |
3280af22 | 755 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 756 | break; |
a0d0e21e | 757 | case '\010': /* ^H */ |
3280af22 | 758 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 759 | break; |
9d116dd7 | 760 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
761 | if (PL_inplace) |
762 | sv_setpv(sv, PL_inplace); | |
79072805 | 763 | else |
3280af22 | 764 | sv_setsv(sv, &PL_sv_undef); |
79072805 | 765 | break; |
ac27b0f5 | 766 | case '\017': /* ^O & ^OPEN */ |
823a54a3 | 767 | if (nextchar == '\0') { |
ac27b0f5 | 768 | sv_setpv(sv, PL_osname); |
3511154c DM |
769 | SvTAINTED_off(sv); |
770 | } | |
823a54a3 | 771 | else if (strEQ(remaining, "PEN")) { |
11bcd5da | 772 | if (!(CopHINTS_get(&PL_compiling) & HINT_LEXICAL_IO)) |
ac27b0f5 NIS |
773 | sv_setsv(sv, &PL_sv_undef); |
774 | else { | |
11bcd5da NC |
775 | sv_setsv(sv, |
776 | Perl_refcounted_he_fetch(aTHX_ | |
777 | PL_compiling.cop_hints_hash, | |
778 | 0, "open", 4, 0, 0)); | |
ac27b0f5 NIS |
779 | } |
780 | } | |
28f23441 | 781 | break; |
79072805 | 782 | case '\020': /* ^P */ |
3280af22 | 783 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 784 | break; |
fb73857a | 785 | case '\023': /* ^S */ |
823a54a3 | 786 | if (nextchar == '\0') { |
3280af22 | 787 | if (PL_lex_state != LEX_NOTPARSING) |
0c34ef67 | 788 | SvOK_off(sv); |
3280af22 | 789 | else if (PL_in_eval) |
6dc8a9e4 | 790 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
791 | else |
792 | sv_setiv(sv, 0); | |
d58bf5aa | 793 | } |
fb73857a | 794 | break; |
79072805 | 795 | case '\024': /* ^T */ |
823a54a3 | 796 | if (nextchar == '\0') { |
88e89b8a | 797 | #ifdef BIG_TIME |
7c36658b | 798 | sv_setnv(sv, PL_basetime); |
88e89b8a | 799 | #else |
7c36658b | 800 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 801 | #endif |
7c36658b | 802 | } |
823a54a3 | 803 | else if (strEQ(remaining, "AINT")) |
9aa05f58 RGS |
804 | sv_setiv(sv, PL_tainting |
805 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
806 | : 0); | |
7c36658b | 807 | break; |
e07ea26a | 808 | case '\025': /* $^UNICODE, $^UTF8LOCALE, $^UTF8CACHE */ |
823a54a3 | 809 | if (strEQ(remaining, "NICODE")) |
a05d7ebb | 810 | sv_setuv(sv, (UV) PL_unicode); |
823a54a3 | 811 | else if (strEQ(remaining, "TF8LOCALE")) |
7cebcbc0 | 812 | sv_setuv(sv, (UV) PL_utf8locale); |
e07ea26a NC |
813 | else if (strEQ(remaining, "TF8CACHE")) |
814 | sv_setiv(sv, (IV) PL_utf8cache); | |
fde18df1 JH |
815 | break; |
816 | case '\027': /* ^W & $^WARNING_BITS */ | |
823a54a3 | 817 | if (nextchar == '\0') |
4438c4b7 | 818 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
823a54a3 | 819 | else if (strEQ(remaining, "ARNING_BITS")) { |
013b78e8 | 820 | if (PL_compiling.cop_warnings == pWARN_NONE) { |
4438c4b7 | 821 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
013b78e8 RGS |
822 | } |
823 | else if (PL_compiling.cop_warnings == pWARN_STD) { | |
666ea192 JH |
824 | sv_setpvn( |
825 | sv, | |
826 | (PL_dowarn & G_WARN_ON) ? WARN_ALLstring : WARN_NONEstring, | |
827 | WARNsize | |
828 | ); | |
013b78e8 | 829 | } |
d3a7d8c7 | 830 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
831 | /* Get the bit mask for $warnings::Bits{all}, because |
832 | * it could have been extended by warnings::register */ | |
823a54a3 | 833 | HV * const bits=get_hv("warnings::Bits", FALSE); |
f5a63d97 AL |
834 | if (bits) { |
835 | SV ** const bits_all = hv_fetchs(bits, "all", FALSE); | |
836 | if (bits_all) | |
837 | sv_setsv(sv, *bits_all); | |
75b6c4ca RGS |
838 | } |
839 | else { | |
840 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
841 | } | |
ac27b0f5 | 842 | } |
4438c4b7 | 843 | else { |
72dc9ed5 NC |
844 | sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1), |
845 | *PL_compiling.cop_warnings); | |
ac27b0f5 | 846 | } |
d3a7d8c7 | 847 | SvPOK_only(sv); |
4438c4b7 | 848 | } |
79072805 LW |
849 | break; |
850 | case '1': case '2': case '3': case '4': | |
851 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 852 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
a863c7d1 MB |
853 | /* |
854 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
855 | * XXX Does the new way break anything? | |
856 | */ | |
ffc61ed2 | 857 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
44a2ac75 YO |
858 | reg_numbered_buff_get( paren, rx, sv, 0); |
859 | break; | |
79072805 | 860 | } |
3280af22 | 861 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
862 | break; |
863 | case '+': | |
aaa362c4 | 864 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
44a2ac75 YO |
865 | if (rx->lastparen) { |
866 | reg_numbered_buff_get( rx->lastparen, rx, sv, 0); | |
867 | break; | |
868 | } | |
79072805 | 869 | } |
3280af22 | 870 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 871 | break; |
a01268b5 JH |
872 | case '\016': /* ^N */ |
873 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
44a2ac75 YO |
874 | if (rx->lastcloseparen) { |
875 | reg_numbered_buff_get( rx->lastcloseparen, rx, sv, 0); | |
876 | break; | |
877 | } | |
878 | ||
a01268b5 JH |
879 | } |
880 | sv_setsv(sv,&PL_sv_undef); | |
881 | break; | |
79072805 | 882 | case '`': |
aaa362c4 | 883 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
44a2ac75 YO |
884 | reg_numbered_buff_get( -2, rx, sv, 0); |
885 | break; | |
79072805 | 886 | } |
3280af22 | 887 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
888 | break; |
889 | case '\'': | |
aaa362c4 | 890 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
44a2ac75 YO |
891 | reg_numbered_buff_get( -1, rx, sv, 0); |
892 | break; | |
79072805 | 893 | } |
3280af22 | 894 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
895 | break; |
896 | case '.': | |
3280af22 | 897 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 898 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 | 899 | } |
79072805 LW |
900 | break; |
901 | case '?': | |
809a5acc | 902 | { |
809a5acc | 903 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 904 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
905 | LvTARGOFF(sv) = PL_statusvalue; |
906 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 907 | #endif |
809a5acc | 908 | } |
79072805 LW |
909 | break; |
910 | case '^': | |
0daa599b RGS |
911 | if (GvIOp(PL_defoutgv)) |
912 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); | |
79072805 LW |
913 | if (s) |
914 | sv_setpv(sv,s); | |
915 | else { | |
3280af22 | 916 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 LW |
917 | sv_catpv(sv,"_TOP"); |
918 | } | |
919 | break; | |
920 | case '~': | |
0daa599b RGS |
921 | if (GvIOp(PL_defoutgv)) |
922 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); | |
79072805 | 923 | if (!s) |
3280af22 | 924 | s = GvENAME(PL_defoutgv); |
79072805 LW |
925 | sv_setpv(sv,s); |
926 | break; | |
79072805 | 927 | case '=': |
0daa599b RGS |
928 | if (GvIOp(PL_defoutgv)) |
929 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); | |
79072805 LW |
930 | break; |
931 | case '-': | |
0daa599b RGS |
932 | if (GvIOp(PL_defoutgv)) |
933 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); | |
79072805 LW |
934 | break; |
935 | case '%': | |
0daa599b RGS |
936 | if (GvIOp(PL_defoutgv)) |
937 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); | |
79072805 | 938 | break; |
79072805 LW |
939 | case ':': |
940 | break; | |
941 | case '/': | |
942 | break; | |
943 | case '[': | |
11206fdd | 944 | sv_setiv(sv, (IV)CopARYBASE_get(PL_curcop)); |
79072805 LW |
945 | break; |
946 | case '|': | |
0daa599b RGS |
947 | if (GvIOp(PL_defoutgv)) |
948 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); | |
79072805 LW |
949 | break; |
950 | case ',': | |
79072805 LW |
951 | break; |
952 | case '\\': | |
b2ce0fda | 953 | if (PL_ors_sv) |
f28098ff | 954 | sv_copypv(sv, PL_ors_sv); |
79072805 | 955 | break; |
79072805 | 956 | case '!': |
a5f75d66 | 957 | #ifdef VMS |
65202027 | 958 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 959 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 960 | #else |
88e89b8a | 961 | { |
8772537c | 962 | const int saveerrno = errno; |
65202027 | 963 | sv_setnv(sv, (NV)errno); |
88e89b8a | 964 | #ifdef OS2 |
ed344e4f IZ |
965 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
966 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 967 | else |
a5f75d66 | 968 | #endif |
666ea192 | 969 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 970 | errno = saveerrno; |
971 | } | |
972 | #endif | |
ad3296c6 | 973 | SvRTRIM(sv); |
946ec16e | 974 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
975 | break; |
976 | case '<': | |
3280af22 | 977 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
978 | break; |
979 | case '>': | |
3280af22 | 980 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
981 | break; |
982 | case '(': | |
3280af22 | 983 | sv_setiv(sv, (IV)PL_gid); |
79072805 LW |
984 | goto add_groups; |
985 | case ')': | |
3280af22 | 986 | sv_setiv(sv, (IV)PL_egid); |
79072805 | 987 | add_groups: |
79072805 | 988 | #ifdef HAS_GETGROUPS |
79072805 | 989 | { |
57d7c65e | 990 | Groups_t *gary = NULL; |
fb45abb2 | 991 | I32 i, num_groups = getgroups(0, gary); |
57d7c65e JC |
992 | Newx(gary, num_groups, Groups_t); |
993 | num_groups = getgroups(num_groups, gary); | |
fb45abb2 GA |
994 | for (i = 0; i < num_groups; i++) |
995 | Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]); | |
57d7c65e | 996 | Safefree(gary); |
79072805 | 997 | } |
155aba94 | 998 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
cd70abae | 999 | #endif |
79072805 | 1000 | break; |
cd39f2b6 | 1001 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
1002 | case '0': |
1003 | break; | |
cd39f2b6 | 1004 | #endif |
79072805 | 1005 | } |
a0d0e21e | 1006 | return 0; |
79072805 LW |
1007 | } |
1008 | ||
1009 | int | |
864dbfa3 | 1010 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1011 | { |
8772537c | 1012 | struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 LW |
1013 | |
1014 | if (uf && uf->uf_val) | |
24f81a43 | 1015 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1016 | return 0; |
1017 | } | |
1018 | ||
1019 | int | |
864dbfa3 | 1020 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1021 | { |
27da23d5 | 1022 | dVAR; |
9ae3433d | 1023 | STRLEN len = 0, klen; |
666ea192 | 1024 | const char *s = SvOK(sv) ? SvPV_const(sv,len) : ""; |
fabdb6c0 | 1025 | const char * const ptr = MgPV_const(mg,klen); |
88e89b8a | 1026 | my_setenv(ptr, s); |
1e422769 | 1027 | |
a0d0e21e LW |
1028 | #ifdef DYNAMIC_ENV_FETCH |
1029 | /* We just undefd an environment var. Is a replacement */ | |
1030 | /* waiting in the wings? */ | |
1031 | if (!len) { | |
fabdb6c0 AL |
1032 | SV ** const valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE); |
1033 | if (valp) | |
4ab59fcc | 1034 | s = SvOK(*valp) ? SvPV_const(*valp, len) : ""; |
a0d0e21e LW |
1035 | } |
1036 | #endif | |
1e422769 | 1037 | |
39e571d4 | 1038 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
1039 | /* And you'll never guess what the dog had */ |
1040 | /* in its mouth... */ | |
3280af22 | 1041 | if (PL_tainting) { |
1e422769 | 1042 | MgTAINTEDDIR_off(mg); |
1043 | #ifdef VMS | |
5aabfad6 | 1044 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
b8ffc8df | 1045 | char pathbuf[256], eltbuf[256], *cp, *elt; |
c623ac67 | 1046 | Stat_t sbuf; |
1e422769 | 1047 | int i = 0, j = 0; |
1048 | ||
6fca0082 | 1049 | my_strlcpy(eltbuf, s, sizeof(eltbuf)); |
b8ffc8df | 1050 | elt = eltbuf; |
1e422769 | 1051 | do { /* DCL$PATH may be a search list */ |
1052 | while (1) { /* as may dev portion of any element */ | |
1053 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
1054 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
1055 | cando_by_name(S_IWUSR,0,elt) ) { | |
1056 | MgTAINTEDDIR_on(mg); | |
1057 | return 0; | |
1058 | } | |
1059 | } | |
bd61b366 | 1060 | if ((cp = strchr(elt, ':')) != NULL) |
1e422769 | 1061 | *cp = '\0'; |
1062 | if (my_trnlnm(elt, eltbuf, j++)) | |
1063 | elt = eltbuf; | |
1064 | else | |
1065 | break; | |
1066 | } | |
1067 | j = 0; | |
1068 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1069 | } | |
1070 | #endif /* VMS */ | |
5aabfad6 | 1071 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
8772537c | 1072 | const char * const strend = s + len; |
463ee0b2 LW |
1073 | |
1074 | while (s < strend) { | |
96827780 | 1075 | char tmpbuf[256]; |
c623ac67 | 1076 | Stat_t st; |
5f74f29c | 1077 | I32 i; |
f5a63d97 AL |
1078 | #ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */ |
1079 | const char path_sep = '|'; | |
1080 | #else | |
1081 | const char path_sep = ':'; | |
1082 | #endif | |
96827780 | 1083 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
427eaa01 | 1084 | s, strend, path_sep, &i); |
463ee0b2 | 1085 | s++; |
bb7a0f54 | 1086 | if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */ |
326b5008 CB |
1087 | #ifdef VMS |
1088 | || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */ | |
1089 | #else | |
1090 | || *tmpbuf != '/' /* no starting slash -- assume relative path */ | |
1091 | #endif | |
c6ed36e1 | 1092 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1093 | MgTAINTEDDIR_on(mg); |
1e422769 | 1094 | return 0; |
1095 | } | |
463ee0b2 | 1096 | } |
79072805 LW |
1097 | } |
1098 | } | |
39e571d4 | 1099 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1100 | |
79072805 LW |
1101 | return 0; |
1102 | } | |
1103 | ||
1104 | int | |
864dbfa3 | 1105 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1106 | { |
8772537c | 1107 | PERL_UNUSED_ARG(sv); |
bd61b366 | 1108 | my_setenv(MgPV_nolen_const(mg),NULL); |
85e6fe83 LW |
1109 | return 0; |
1110 | } | |
1111 | ||
88e89b8a | 1112 | int |
864dbfa3 | 1113 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1114 | { |
97aff369 | 1115 | dVAR; |
65e66c80 | 1116 | PERL_UNUSED_ARG(mg); |
b0269e46 | 1117 | #if defined(VMS) |
cea2e8a9 | 1118 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1119 | #else |
3280af22 | 1120 | if (PL_localizing) { |
fb73857a | 1121 | HE* entry; |
b0269e46 | 1122 | my_clearenv(); |
fb73857a | 1123 | hv_iterinit((HV*)sv); |
155aba94 | 1124 | while ((entry = hv_iternext((HV*)sv))) { |
fb73857a | 1125 | I32 keylen; |
1126 | my_setenv(hv_iterkey(entry, &keylen), | |
b83604b4 | 1127 | SvPV_nolen_const(hv_iterval((HV*)sv, entry))); |
fb73857a | 1128 | } |
1129 | } | |
1130 | #endif | |
1131 | return 0; | |
1132 | } | |
1133 | ||
1134 | int | |
864dbfa3 | 1135 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1136 | { |
27da23d5 | 1137 | dVAR; |
8772537c AL |
1138 | PERL_UNUSED_ARG(sv); |
1139 | PERL_UNUSED_ARG(mg); | |
b0269e46 AB |
1140 | #if defined(VMS) |
1141 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); | |
1142 | #else | |
1143 | my_clearenv(); | |
1144 | #endif | |
3e3baf6d | 1145 | return 0; |
66b1d557 HM |
1146 | } |
1147 | ||
64ca3a65 | 1148 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1149 | #ifdef HAS_SIGPROCMASK |
1150 | static void | |
1151 | restore_sigmask(pTHX_ SV *save_sv) | |
1152 | { | |
0bd48802 | 1153 | const sigset_t * const ossetp = (const sigset_t *) SvPV_nolen_const( save_sv ); |
f5a63d97 | 1154 | (void)sigprocmask(SIG_SETMASK, ossetp, NULL); |
2d4fcd5e AJ |
1155 | } |
1156 | #endif | |
66b1d557 | 1157 | int |
864dbfa3 | 1158 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1159 | { |
97aff369 | 1160 | dVAR; |
88e89b8a | 1161 | /* Are we fetching a signal entry? */ |
8772537c | 1162 | const I32 i = whichsig(MgPV_nolen_const(mg)); |
e02bfb16 | 1163 | if (i > 0) { |
22c35a8c GS |
1164 | if(PL_psig_ptr[i]) |
1165 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1166 | else { |
46da273f | 1167 | Sighandler_t sigstate = rsignal_state(i); |
23ada85b | 1168 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
46da273f AL |
1169 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) |
1170 | sigstate = SIG_IGN; | |
2e34cc90 CL |
1171 | #endif |
1172 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
46da273f AL |
1173 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) |
1174 | sigstate = SIG_DFL; | |
85b332e2 | 1175 | #endif |
88e89b8a | 1176 | /* cache state so we don't fetch it again */ |
8aad04aa | 1177 | if(sigstate == (Sighandler_t) SIG_IGN) |
88e89b8a | 1178 | sv_setpv(sv,"IGNORE"); |
1179 | else | |
3280af22 | 1180 | sv_setsv(sv,&PL_sv_undef); |
46da273f | 1181 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1182 | SvTEMP_off(sv); |
1183 | } | |
1184 | } | |
1185 | return 0; | |
1186 | } | |
1187 | int | |
864dbfa3 | 1188 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1189 | { |
2d4fcd5e AJ |
1190 | /* XXX Some of this code was copied from Perl_magic_setsig. A little |
1191 | * refactoring might be in order. | |
1192 | */ | |
27da23d5 | 1193 | dVAR; |
8772537c AL |
1194 | register const char * const s = MgPV_nolen_const(mg); |
1195 | PERL_UNUSED_ARG(sv); | |
2d4fcd5e | 1196 | if (*s == '_') { |
cbbf8932 | 1197 | SV** svp = NULL; |
2d4fcd5e AJ |
1198 | if (strEQ(s,"__DIE__")) |
1199 | svp = &PL_diehook; | |
b274dc4e | 1200 | else if (strEQ(s,"__WARN__") && PL_warnhook != PERL_WARNHOOK_FATAL) |
2d4fcd5e | 1201 | svp = &PL_warnhook; |
27da23d5 | 1202 | if (svp && *svp) { |
b274dc4e | 1203 | SV *const to_dec = *svp; |
cbbf8932 | 1204 | *svp = NULL; |
b274dc4e | 1205 | SvREFCNT_dec(to_dec); |
2d4fcd5e AJ |
1206 | } |
1207 | } | |
1208 | else { | |
2d4fcd5e | 1209 | /* Are we clearing a signal entry? */ |
8772537c | 1210 | const I32 i = whichsig(s); |
e02bfb16 | 1211 | if (i > 0) { |
2d4fcd5e AJ |
1212 | #ifdef HAS_SIGPROCMASK |
1213 | sigset_t set, save; | |
1214 | SV* save_sv; | |
1215 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1216 | sigemptyset(&set); | |
1217 | sigaddset(&set,i); | |
1218 | sigprocmask(SIG_BLOCK, &set, &save); | |
1219 | ENTER; | |
1220 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1221 | SAVEFREESV(save_sv); | |
1222 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1223 | #endif | |
1224 | PERL_ASYNC_CHECK(); | |
1225 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) | |
27da23d5 | 1226 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2d4fcd5e AJ |
1227 | #endif |
1228 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
27da23d5 | 1229 | PL_sig_defaulting[i] = 1; |
5c1546dc | 1230 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e | 1231 | #else |
8aad04aa | 1232 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2d4fcd5e AJ |
1233 | #endif |
1234 | if(PL_psig_name[i]) { | |
1235 | SvREFCNT_dec(PL_psig_name[i]); | |
1236 | PL_psig_name[i]=0; | |
1237 | } | |
1238 | if(PL_psig_ptr[i]) { | |
6136c704 | 1239 | SV * const to_dec=PL_psig_ptr[i]; |
2d4fcd5e AJ |
1240 | PL_psig_ptr[i]=0; |
1241 | LEAVE; | |
1242 | SvREFCNT_dec(to_dec); | |
1243 | } | |
1244 | else | |
1245 | LEAVE; | |
1246 | } | |
88e89b8a | 1247 | } |
1248 | return 0; | |
1249 | } | |
3d37d572 | 1250 | |
2563cec5 IZ |
1251 | #ifndef SIG_PENDING_DIE_COUNT |
1252 | # define SIG_PENDING_DIE_COUNT 120 | |
1253 | #endif | |
1254 | ||
dd374669 AL |
1255 | static void |
1256 | S_raise_signal(pTHX_ int sig) | |
0a8e0eff | 1257 | { |
97aff369 | 1258 | dVAR; |
0a8e0eff NIS |
1259 | /* Set a flag to say this signal is pending */ |
1260 | PL_psig_pend[sig]++; | |
1261 | /* And one to say _a_ signal is pending */ | |
2563cec5 IZ |
1262 | if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT) |
1263 | Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded", | |
1264 | (unsigned long)SIG_PENDING_DIE_COUNT); | |
0a8e0eff NIS |
1265 | } |
1266 | ||
1267 | Signal_t | |
8aad04aa JH |
1268 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
1269 | Perl_csighandler(int sig, ...) | |
1270 | #else | |
0a8e0eff | 1271 | Perl_csighandler(int sig) |
8aad04aa | 1272 | #endif |
0a8e0eff | 1273 | { |
1018e26f NIS |
1274 | #ifdef PERL_GET_SIG_CONTEXT |
1275 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1276 | #else | |
85b332e2 CL |
1277 | dTHX; |
1278 | #endif | |
23ada85b | 1279 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1280 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1281 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1282 | #endif |
2e34cc90 | 1283 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1284 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1285 | #ifdef KILL_BY_SIGPRC |
1286 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1287 | #else | |
1288 | exit(1); | |
1289 | #endif | |
1290 | #endif | |
853d2c32 RGS |
1291 | if ( |
1292 | #ifdef SIGILL | |
1293 | sig == SIGILL || | |
1294 | #endif | |
1295 | #ifdef SIGBUS | |
1296 | sig == SIGBUS || | |
1297 | #endif | |
1298 | #ifdef SIGSEGV | |
1299 | sig == SIGSEGV || | |
1300 | #endif | |
1301 | (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)) | |
4ffa73a3 JH |
1302 | /* Call the perl level handler now-- |
1303 | * with risk we may be in malloc() etc. */ | |
1304 | (*PL_sighandlerp)(sig); | |
1305 | else | |
dd374669 | 1306 | S_raise_signal(aTHX_ sig); |
0a8e0eff NIS |
1307 | } |
1308 | ||
2e34cc90 CL |
1309 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1310 | void | |
1311 | Perl_csighandler_init(void) | |
1312 | { | |
1313 | int sig; | |
27da23d5 | 1314 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1315 | |
1316 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1317 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1318 | dTHX; |
27da23d5 | 1319 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1320 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1321 | #endif |
1322 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1323 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1324 | #endif |
1325 | } | |
27da23d5 | 1326 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1327 | } |
1328 | #endif | |
1329 | ||
0a8e0eff NIS |
1330 | void |
1331 | Perl_despatch_signals(pTHX) | |
1332 | { | |
97aff369 | 1333 | dVAR; |
0a8e0eff NIS |
1334 | int sig; |
1335 | PL_sig_pending = 0; | |
1336 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1337 | if (PL_psig_pend[sig]) { | |
25da4428 JH |
1338 | PERL_BLOCKSIG_ADD(set, sig); |
1339 | PL_psig_pend[sig] = 0; | |
1340 | PERL_BLOCKSIG_BLOCK(set); | |
f5203343 | 1341 | (*PL_sighandlerp)(sig); |
25da4428 | 1342 | PERL_BLOCKSIG_UNBLOCK(set); |
0a8e0eff NIS |
1343 | } |
1344 | } | |
1345 | } | |
1346 | ||
85e6fe83 | 1347 | int |
864dbfa3 | 1348 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1349 | { |
27da23d5 | 1350 | dVAR; |
79072805 | 1351 | I32 i; |
cbbf8932 | 1352 | SV** svp = NULL; |
2d4fcd5e AJ |
1353 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1354 | * effects (due to closures). We must make sure that the new disposition | |
1355 | * is in place before it is called. | |
1356 | */ | |
cbbf8932 | 1357 | SV* to_dec = NULL; |
e72dc28c | 1358 | STRLEN len; |
2d4fcd5e AJ |
1359 | #ifdef HAS_SIGPROCMASK |
1360 | sigset_t set, save; | |
1361 | SV* save_sv; | |
1362 | #endif | |
a0d0e21e | 1363 | |
d5263905 | 1364 | register const char *s = MgPV_const(mg,len); |
748a9306 LW |
1365 | if (*s == '_') { |
1366 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1367 | svp = &PL_diehook; |
748a9306 | 1368 | else if (strEQ(s,"__WARN__")) |
3280af22 | 1369 | svp = &PL_warnhook; |
748a9306 | 1370 | else |
cea2e8a9 | 1371 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1372 | i = 0; |
4633a7c4 | 1373 | if (*svp) { |
9289f461 RGS |
1374 | if (*svp != PERL_WARNHOOK_FATAL) |
1375 | to_dec = *svp; | |
cbbf8932 | 1376 | *svp = NULL; |
4633a7c4 | 1377 | } |
748a9306 LW |
1378 | } |
1379 | else { | |
1380 | i = whichsig(s); /* ...no, a brick */ | |
86d86cad | 1381 | if (i <= 0) { |
e476b1b5 | 1382 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 1383 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); |
748a9306 LW |
1384 | return 0; |
1385 | } | |
2d4fcd5e AJ |
1386 | #ifdef HAS_SIGPROCMASK |
1387 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1388 | sigemptyset(&set); | |
1389 | sigaddset(&set,i); | |
1390 | sigprocmask(SIG_BLOCK, &set, &save); | |
1391 | ENTER; | |
1392 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1393 | SAVEFREESV(save_sv); | |
1394 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1395 | #endif | |
1396 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1397 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1398 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1399 | #endif |
23ada85b | 1400 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1401 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1402 | #endif |
2e34cc90 | 1403 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1404 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1405 | #endif |
22c35a8c | 1406 | SvREFCNT_dec(PL_psig_name[i]); |
2d4fcd5e | 1407 | to_dec = PL_psig_ptr[i]; |
46da273f | 1408 | PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv); |
88e89b8a | 1409 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 1410 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 1411 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 1412 | } |
a0d0e21e | 1413 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
2d4fcd5e | 1414 | if (i) { |
5c1546dc | 1415 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1416 | #ifdef HAS_SIGPROCMASK |
1417 | LEAVE; | |
1418 | #endif | |
1419 | } | |
748a9306 | 1420 | else |
b37c2d43 | 1421 | *svp = SvREFCNT_inc_simple_NN(sv); |
2d4fcd5e AJ |
1422 | if(to_dec) |
1423 | SvREFCNT_dec(to_dec); | |
a0d0e21e LW |
1424 | return 0; |
1425 | } | |
baf38871 | 1426 | s = SvOK(sv) ? SvPV_force(sv,len) : "DEFAULT"; |
748a9306 | 1427 | if (strEQ(s,"IGNORE")) { |
85b332e2 | 1428 | if (i) { |
23ada85b | 1429 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1430 | PL_sig_ignoring[i] = 1; |
5c1546dc | 1431 | (void)rsignal(i, PL_csighandlerp); |
85b332e2 | 1432 | #else |
8aad04aa | 1433 | (void)rsignal(i, (Sighandler_t) SIG_IGN); |
85b332e2 | 1434 | #endif |
2d4fcd5e | 1435 | } |
748a9306 LW |
1436 | } |
1437 | else if (strEQ(s,"DEFAULT") || !*s) { | |
1438 | if (i) | |
2e34cc90 CL |
1439 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1440 | { | |
27da23d5 | 1441 | PL_sig_defaulting[i] = 1; |
5c1546dc | 1442 | (void)rsignal(i, PL_csighandlerp); |
2e34cc90 CL |
1443 | } |
1444 | #else | |
8aad04aa | 1445 | (void)rsignal(i, (Sighandler_t) SIG_DFL); |
2e34cc90 | 1446 | #endif |
748a9306 | 1447 | } |
79072805 | 1448 | else { |
5aabfad6 | 1449 | /* |
1450 | * We should warn if HINT_STRICT_REFS, but without | |
1451 | * access to a known hint bit in a known OP, we can't | |
1452 | * tell whether HINT_STRICT_REFS is in force or not. | |
1453 | */ | |
46fc3d4c | 1454 | if (!strchr(s,':') && !strchr(s,'\'')) |
89529cee | 1455 | Perl_sv_insert(aTHX_ sv, 0, 0, STR_WITH_LEN("main::")); |
748a9306 | 1456 | if (i) |
5c1546dc | 1457 | (void)rsignal(i, PL_csighandlerp); |
748a9306 | 1458 | else |
46da273f | 1459 | *svp = SvREFCNT_inc_simple_NN(sv); |
79072805 | 1460 | } |
2d4fcd5e AJ |
1461 | #ifdef HAS_SIGPROCMASK |
1462 | if(i) | |
1463 | LEAVE; | |
1464 | #endif | |
1465 | if(to_dec) | |
1466 | SvREFCNT_dec(to_dec); | |
79072805 LW |
1467 | return 0; |
1468 | } | |
64ca3a65 | 1469 | #endif /* !PERL_MICRO */ |
79072805 LW |
1470 | |
1471 | int | |
864dbfa3 | 1472 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1473 | { |
97aff369 | 1474 | dVAR; |
8772537c AL |
1475 | PERL_UNUSED_ARG(sv); |
1476 | PERL_UNUSED_ARG(mg); | |
3280af22 | 1477 | PL_sub_generation++; |
463ee0b2 LW |
1478 | return 0; |
1479 | } | |
1480 | ||
1481 | int | |
864dbfa3 | 1482 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1483 | { |
97aff369 | 1484 | dVAR; |
8772537c AL |
1485 | PERL_UNUSED_ARG(sv); |
1486 | PERL_UNUSED_ARG(mg); | |
a0d0e21e | 1487 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 1488 | PL_amagic_generation++; |
463ee0b2 | 1489 | |
a0d0e21e LW |
1490 | return 0; |
1491 | } | |
463ee0b2 | 1492 | |
946ec16e | 1493 | int |
864dbfa3 | 1494 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1495 | { |
dd374669 | 1496 | HV * const hv = (HV*)LvTARG(sv); |
6ff81951 | 1497 | I32 i = 0; |
8772537c | 1498 | PERL_UNUSED_ARG(mg); |
7719e241 | 1499 | |
6ff81951 | 1500 | if (hv) { |
497b47a8 JH |
1501 | (void) hv_iterinit(hv); |
1502 | if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) | |
1503 | i = HvKEYS(hv); | |
1504 | else { | |
1505 | while (hv_iternext(hv)) | |
1506 | i++; | |
1507 | } | |
6ff81951 GS |
1508 | } |
1509 | ||
1510 | sv_setiv(sv, (IV)i); | |
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | int | |
864dbfa3 | 1515 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1516 | { |
8772537c | 1517 | PERL_UNUSED_ARG(mg); |
946ec16e | 1518 | if (LvTARG(sv)) { |
1519 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1520 | } |
1521 | return 0; | |
ac27b0f5 | 1522 | } |
946ec16e | 1523 | |
e336de0d | 1524 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1525 | STATIC int |
e1ec3a88 | 1526 | S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val) |
a0d0e21e | 1527 | { |
97aff369 | 1528 | dVAR; |
a0d0e21e | 1529 | dSP; |
463ee0b2 | 1530 | |
924508f0 GS |
1531 | PUSHMARK(SP); |
1532 | EXTEND(SP, n); | |
33c27489 | 1533 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 | 1534 | if (n > 1) { |
93965878 | 1535 | if (mg->mg_ptr) { |
565764a8 | 1536 | if (mg->mg_len >= 0) |
79cb57f6 | 1537 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1538 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1539 | PUSHs((SV*)mg->mg_ptr); |
1540 | } | |
14befaf4 | 1541 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { |
565764a8 | 1542 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1543 | } |
1544 | } | |
1545 | if (n > 2) { | |
1546 | PUSHs(val); | |
88e89b8a | 1547 | } |
463ee0b2 LW |
1548 | PUTBACK; |
1549 | ||
864dbfa3 | 1550 | return call_method(meth, flags); |
946ec16e | 1551 | } |
1552 | ||
76e3520e | 1553 | STATIC int |
e1ec3a88 | 1554 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1555 | { |
27da23d5 | 1556 | dVAR; dSP; |
463ee0b2 | 1557 | |
a0d0e21e LW |
1558 | ENTER; |
1559 | SAVETMPS; | |
e788e7d3 | 1560 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1561 | |
33c27489 | 1562 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1563 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1564 | } |
463ee0b2 | 1565 | |
d3acc0f7 | 1566 | POPSTACK; |
a0d0e21e LW |
1567 | FREETMPS; |
1568 | LEAVE; | |
1569 | return 0; | |
1570 | } | |
463ee0b2 | 1571 | |
a0d0e21e | 1572 | int |
864dbfa3 | 1573 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1574 | { |
a0d0e21e LW |
1575 | if (mg->mg_ptr) |
1576 | mg->mg_flags |= MGf_GSKIP; | |
58f82c5c | 1577 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1578 | return 0; |
1579 | } | |
1580 | ||
1581 | int | |
864dbfa3 | 1582 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1583 | { |
27da23d5 | 1584 | dVAR; dSP; |
a60c0954 | 1585 | ENTER; |
e788e7d3 | 1586 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1587 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1588 | POPSTACK; |
a60c0954 | 1589 | LEAVE; |
463ee0b2 LW |
1590 | return 0; |
1591 | } | |
1592 | ||
1593 | int | |
864dbfa3 | 1594 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1595 | { |
a0d0e21e LW |
1596 | return magic_methpack(sv,mg,"DELETE"); |
1597 | } | |
463ee0b2 | 1598 | |
93965878 NIS |
1599 | |
1600 | U32 | |
864dbfa3 | 1601 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1602 | { |
27da23d5 | 1603 | dVAR; dSP; |
93965878 NIS |
1604 | U32 retval = 0; |
1605 | ||
1606 | ENTER; | |
1607 | SAVETMPS; | |
e788e7d3 | 1608 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1609 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1610 | sv = *PL_stack_sp--; |
a60c0954 | 1611 | retval = (U32) SvIV(sv)-1; |
93965878 | 1612 | } |
d3acc0f7 | 1613 | POPSTACK; |
93965878 NIS |
1614 | FREETMPS; |
1615 | LEAVE; | |
1616 | return retval; | |
1617 | } | |
1618 | ||
cea2e8a9 GS |
1619 | int |
1620 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1621 | { |
27da23d5 | 1622 | dVAR; dSP; |
463ee0b2 | 1623 | |
e336de0d | 1624 | ENTER; |
e788e7d3 | 1625 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1626 | PUSHMARK(SP); |
33c27489 | 1627 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1628 | PUTBACK; |
864dbfa3 | 1629 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1630 | POPSTACK; |
a60c0954 | 1631 | LEAVE; |
a3bcc51e | 1632 | |
463ee0b2 LW |
1633 | return 0; |
1634 | } | |
1635 | ||
1636 | int | |
864dbfa3 | 1637 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1638 | { |
27da23d5 | 1639 | dVAR; dSP; |
666ea192 | 1640 | const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1641 | |
1642 | ENTER; | |
a0d0e21e | 1643 | SAVETMPS; |
e788e7d3 | 1644 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1645 | PUSHMARK(SP); |
1646 | EXTEND(SP, 2); | |
33c27489 | 1647 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1648 | if (SvOK(key)) |
1649 | PUSHs(key); | |
1650 | PUTBACK; | |
1651 | ||
864dbfa3 | 1652 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1653 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1654 | |
d3acc0f7 | 1655 | POPSTACK; |
a0d0e21e LW |
1656 | FREETMPS; |
1657 | LEAVE; | |
79072805 LW |
1658 | return 0; |
1659 | } | |
1660 | ||
1661 | int | |
1146e912 | 1662 | Perl_magic_existspack(pTHX_ SV *sv, const MAGIC *mg) |
a0d0e21e LW |
1663 | { |
1664 | return magic_methpack(sv,mg,"EXISTS"); | |
ac27b0f5 | 1665 | } |
a0d0e21e | 1666 | |
a3bcc51e TP |
1667 | SV * |
1668 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1669 | { | |
27da23d5 | 1670 | dVAR; dSP; |
5fcbf73d | 1671 | SV *retval; |
8772537c AL |
1672 | SV * const tied = SvTIED_obj((SV*)hv, mg); |
1673 | HV * const pkg = SvSTASH((SV*)SvRV(tied)); | |
a3bcc51e TP |
1674 | |
1675 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { | |
1676 | SV *key; | |
bfcb3514 | 1677 | if (HvEITER_get(hv)) |
a3bcc51e TP |
1678 | /* we are in an iteration so the hash cannot be empty */ |
1679 | return &PL_sv_yes; | |
1680 | /* no xhv_eiter so now use FIRSTKEY */ | |
1681 | key = sv_newmortal(); | |
1682 | magic_nextpack((SV*)hv, mg, key); | |
bfcb3514 | 1683 | HvEITER_set(hv, NULL); /* need to reset iterator */ |
a3bcc51e TP |
1684 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; |
1685 | } | |
1686 | ||
1687 | /* there is a SCALAR method that we can call */ | |
1688 | ENTER; | |
1689 | PUSHSTACKi(PERLSI_MAGIC); | |
1690 | PUSHMARK(SP); | |
1691 | EXTEND(SP, 1); | |
1692 | PUSHs(tied); | |
1693 | PUTBACK; | |
1694 | ||
1695 | if (call_method("SCALAR", G_SCALAR)) | |
1696 | retval = *PL_stack_sp--; | |
5fcbf73d AL |
1697 | else |
1698 | retval = &PL_sv_undef; | |
a3bcc51e TP |
1699 | POPSTACK; |
1700 | LEAVE; | |
1701 | return retval; | |
1702 | } | |
1703 | ||
a0d0e21e | 1704 | int |
864dbfa3 | 1705 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1706 | { |
97aff369 | 1707 | dVAR; |
8772537c AL |
1708 | GV * const gv = PL_DBline; |
1709 | const I32 i = SvTRUE(sv); | |
1710 | SV ** const svp = av_fetch(GvAV(gv), | |
01b8bcb7 | 1711 | atoi(MgPV_nolen_const(mg)), FALSE); |
8772537c AL |
1712 | if (svp && SvIOKp(*svp)) { |
1713 | OP * const o = INT2PTR(OP*,SvIVX(*svp)); | |
1714 | if (o) { | |
1715 | /* set or clear breakpoint in the relevant control op */ | |
1716 | if (i) | |
1717 | o->op_flags |= OPf_SPECIAL; | |
1718 | else | |
1719 | o->op_flags &= ~OPf_SPECIAL; | |
1720 | } | |
5df8de69 | 1721 | } |
79072805 LW |
1722 | return 0; |
1723 | } | |
1724 | ||
1725 | int | |
8772537c | 1726 | Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg) |
79072805 | 1727 | { |
97aff369 | 1728 | dVAR; |
8772537c | 1729 | const AV * const obj = (AV*)mg->mg_obj; |
83bf042f | 1730 | if (obj) { |
fc15ae8f | 1731 | sv_setiv(sv, AvFILL(obj) + CopARYBASE_get(PL_curcop)); |
83bf042f NC |
1732 | } else { |
1733 | SvOK_off(sv); | |
1734 | } | |
79072805 LW |
1735 | return 0; |
1736 | } | |
1737 | ||
1738 | int | |
864dbfa3 | 1739 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1740 | { |
97aff369 | 1741 | dVAR; |
8772537c | 1742 | AV * const obj = (AV*)mg->mg_obj; |
83bf042f | 1743 | if (obj) { |
fc15ae8f | 1744 | av_fill(obj, SvIV(sv) - CopARYBASE_get(PL_curcop)); |
83bf042f NC |
1745 | } else { |
1746 | if (ckWARN(WARN_MISC)) | |
1747 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
1748 | "Attempt to set length of freed array"); | |
1749 | } | |
1750 | return 0; | |
1751 | } | |
1752 | ||
1753 | int | |
1754 | Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg) | |
1755 | { | |
97aff369 | 1756 | dVAR; |
53c1dcc0 | 1757 | PERL_UNUSED_ARG(sv); |
94f3782b DM |
1758 | /* during global destruction, mg_obj may already have been freed */ |
1759 | if (PL_in_clean_all) | |
1ea47f64 | 1760 | return 0; |
94f3782b | 1761 | |
83bf042f NC |
1762 | mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen); |
1763 | ||
1764 | if (mg) { | |
1765 | /* arylen scalar holds a pointer back to the array, but doesn't own a | |
1766 | reference. Hence the we (the array) are about to go away with it | |
1767 | still pointing at us. Clear its pointer, else it would be pointing | |
1768 | at free memory. See the comment in sv_magic about reference loops, | |
1769 | and why it can't own a reference to us. */ | |
1770 | mg->mg_obj = 0; | |
1771 | } | |
a0d0e21e LW |
1772 | return 0; |
1773 | } | |
1774 | ||
1775 | int | |
864dbfa3 | 1776 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1777 | { |
97aff369 | 1778 | dVAR; |
8772537c | 1779 | SV* const lsv = LvTARG(sv); |
3881461a | 1780 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 1781 | |
a0d0e21e | 1782 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
3881461a AL |
1783 | MAGIC * const found = mg_find(lsv, PERL_MAGIC_regex_global); |
1784 | if (found && found->mg_len >= 0) { | |
1785 | I32 i = found->mg_len; | |
7e2040f0 | 1786 | if (DO_UTF8(lsv)) |
a0ed51b3 | 1787 | sv_pos_b2u(lsv, &i); |
fc15ae8f | 1788 | sv_setiv(sv, i + CopARYBASE_get(PL_curcop)); |
a0d0e21e LW |
1789 | return 0; |
1790 | } | |
1791 | } | |
0c34ef67 | 1792 | SvOK_off(sv); |
a0d0e21e LW |
1793 | return 0; |
1794 | } | |
1795 | ||
1796 | int | |
864dbfa3 | 1797 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1798 | { |
97aff369 | 1799 | dVAR; |
8772537c | 1800 | SV* const lsv = LvTARG(sv); |
a0d0e21e LW |
1801 | SSize_t pos; |
1802 | STRLEN len; | |
c00206c8 | 1803 | STRLEN ulen = 0; |
53d44271 | 1804 | MAGIC* found; |
a0d0e21e | 1805 | |
3881461a | 1806 | PERL_UNUSED_ARG(mg); |
ac27b0f5 | 1807 | |
a0d0e21e | 1808 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
3881461a AL |
1809 | found = mg_find(lsv, PERL_MAGIC_regex_global); |
1810 | else | |
1811 | found = NULL; | |
1812 | if (!found) { | |
a0d0e21e LW |
1813 | if (!SvOK(sv)) |
1814 | return 0; | |
d83f0a82 NC |
1815 | #ifdef PERL_OLD_COPY_ON_WRITE |
1816 | if (SvIsCOW(lsv)) | |
1817 | sv_force_normal_flags(lsv, 0); | |
1818 | #endif | |
3881461a | 1819 | found = sv_magicext(lsv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
53d44271 | 1820 | NULL, 0); |
a0d0e21e LW |
1821 | } |
1822 | else if (!SvOK(sv)) { | |
3881461a | 1823 | found->mg_len = -1; |
a0d0e21e LW |
1824 | return 0; |
1825 | } | |
1826 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1827 | ||
fc15ae8f | 1828 | pos = SvIV(sv) - CopARYBASE_get(PL_curcop); |
a0ed51b3 | 1829 | |
7e2040f0 | 1830 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
1831 | ulen = sv_len_utf8(lsv); |
1832 | if (ulen) | |
1833 | len = ulen; | |
a0ed51b3 LW |
1834 | } |
1835 | ||
a0d0e21e LW |
1836 | if (pos < 0) { |
1837 | pos += len; | |
1838 | if (pos < 0) | |
1839 | pos = 0; | |
1840 | } | |
eb160463 | 1841 | else if (pos > (SSize_t)len) |
a0d0e21e | 1842 | pos = len; |
a0ed51b3 LW |
1843 | |
1844 | if (ulen) { | |
1845 | I32 p = pos; | |
1846 | sv_pos_u2b(lsv, &p, 0); | |
1847 | pos = p; | |
1848 | } | |
727405f8 | 1849 | |
3881461a AL |
1850 | found->mg_len = pos; |
1851 | found->mg_flags &= ~MGf_MINMATCH; | |
a0d0e21e | 1852 | |
79072805 LW |
1853 | return 0; |
1854 | } | |
1855 | ||
1856 | int | |
864dbfa3 | 1857 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1858 | { |
79072805 | 1859 | GV* gv; |
8772537c AL |
1860 | PERL_UNUSED_ARG(mg); |
1861 | ||
79072805 LW |
1862 | if (!SvOK(sv)) |
1863 | return 0; | |
2e5b91de | 1864 | if (isGV_with_GP(sv)) { |
180488f8 NC |
1865 | /* We're actually already a typeglob, so don't need the stuff below. |
1866 | */ | |
1867 | return 0; | |
1868 | } | |
f776e3cd | 1869 | gv = gv_fetchsv(sv, GV_ADD, SVt_PVGV); |
79072805 LW |
1870 | if (sv == (SV*)gv) |
1871 | return 0; | |
1872 | if (GvGP(sv)) | |
88e89b8a | 1873 | gp_free((GV*)sv); |
79072805 | 1874 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1875 | return 0; |
1876 | } | |
1877 | ||
1878 | int | |
864dbfa3 | 1879 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1880 | { |
1881 | STRLEN len; | |
35a4481c | 1882 | SV * const lsv = LvTARG(sv); |
b83604b4 | 1883 | const char * const tmps = SvPV_const(lsv,len); |
6ff81951 GS |
1884 | I32 offs = LvTARGOFF(sv); |
1885 | I32 rem = LvTARGLEN(sv); | |
8772537c | 1886 | PERL_UNUSED_ARG(mg); |
6ff81951 | 1887 | |
9aa983d2 JH |
1888 | if (SvUTF8(lsv)) |
1889 | sv_pos_u2b(lsv, &offs, &rem); | |
eb160463 | 1890 | if (offs > (I32)len) |
6ff81951 | 1891 | offs = len; |
eb160463 | 1892 | if (rem + offs > (I32)len) |
6ff81951 GS |
1893 | rem = len - offs; |
1894 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
9aa983d2 | 1895 | if (SvUTF8(lsv)) |
2ef4b674 | 1896 | SvUTF8_on(sv); |
6ff81951 GS |
1897 | return 0; |
1898 | } | |
1899 | ||
1900 | int | |
864dbfa3 | 1901 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1902 | { |
97aff369 | 1903 | dVAR; |
9aa983d2 | 1904 | STRLEN len; |
5fcbf73d | 1905 | const char * const tmps = SvPV_const(sv, len); |
dd374669 | 1906 | SV * const lsv = LvTARG(sv); |
9aa983d2 JH |
1907 | I32 lvoff = LvTARGOFF(sv); |
1908 | I32 lvlen = LvTARGLEN(sv); | |
8772537c | 1909 | PERL_UNUSED_ARG(mg); |
075a4a2b | 1910 | |
1aa99e6b | 1911 | if (DO_UTF8(sv)) { |
9aa983d2 JH |
1912 | sv_utf8_upgrade(lsv); |
1913 | sv_pos_u2b(lsv, &lvoff, &lvlen); | |
1914 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
b76f3ce2 | 1915 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
1916 | SvUTF8_on(lsv); |
1917 | } | |
9bf12eaf | 1918 | else if (lsv && SvUTF8(lsv)) { |
5fcbf73d | 1919 | const char *utf8; |
9aa983d2 | 1920 | sv_pos_u2b(lsv, &lvoff, &lvlen); |
b76f3ce2 | 1921 | LvTARGLEN(sv) = len; |
5fcbf73d AL |
1922 | utf8 = (char*)bytes_to_utf8((U8*)tmps, &len); |
1923 | sv_insert(lsv, lvoff, lvlen, utf8, len); | |
1924 | Safefree(utf8); | |
1aa99e6b | 1925 | } |
b76f3ce2 GB |
1926 | else { |
1927 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
1928 | LvTARGLEN(sv) = len; | |
1929 | } | |
1930 | ||
1aa99e6b | 1931 | |
79072805 LW |
1932 | return 0; |
1933 | } | |
1934 | ||
1935 | int | |
864dbfa3 | 1936 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1937 | { |
97aff369 | 1938 | dVAR; |
8772537c | 1939 | PERL_UNUSED_ARG(sv); |
27cc343c | 1940 | TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1)); |
463ee0b2 LW |
1941 | return 0; |
1942 | } | |
1943 | ||
1944 | int | |
864dbfa3 | 1945 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1946 | { |
97aff369 | 1947 | dVAR; |
8772537c | 1948 | PERL_UNUSED_ARG(sv); |
0a9c116b DM |
1949 | /* update taint status unless we're restoring at scope exit */ |
1950 | if (PL_localizing != 2) { | |
1951 | if (PL_tainted) | |
1952 | mg->mg_len |= 1; | |
1953 | else | |
1954 | mg->mg_len &= ~1; | |
1955 | } | |
463ee0b2 LW |
1956 | return 0; |
1957 | } | |
1958 | ||
1959 | int | |
864dbfa3 | 1960 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1961 | { |
35a4481c | 1962 | SV * const lsv = LvTARG(sv); |
8772537c | 1963 | PERL_UNUSED_ARG(mg); |
6ff81951 | 1964 | |
6136c704 AL |
1965 | if (lsv) |
1966 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); | |
1967 | else | |
0c34ef67 | 1968 | SvOK_off(sv); |
6ff81951 | 1969 | |
6ff81951 GS |
1970 | return 0; |
1971 | } | |
1972 | ||
1973 | int | |
864dbfa3 | 1974 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1975 | { |
8772537c | 1976 | PERL_UNUSED_ARG(mg); |
79072805 LW |
1977 | do_vecset(sv); /* XXX slurp this routine */ |
1978 | return 0; | |
1979 | } | |
1980 | ||
1981 | int | |
864dbfa3 | 1982 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 1983 | { |
97aff369 | 1984 | dVAR; |
a0714e2c | 1985 | SV *targ = NULL; |
5f05dabc | 1986 | if (LvTARGLEN(sv)) { |
68dc0745 | 1987 | if (mg->mg_obj) { |
8772537c AL |
1988 | SV * const ahv = LvTARG(sv); |
1989 | HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); | |
6d822dc4 MS |
1990 | if (he) |
1991 | targ = HeVAL(he); | |
68dc0745 | 1992 | } |
1993 | else { | |
8772537c | 1994 | AV* const av = (AV*)LvTARG(sv); |
68dc0745 | 1995 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1996 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
1997 | } | |
46da273f | 1998 | if (targ && (targ != &PL_sv_undef)) { |
68dc0745 | 1999 | /* somebody else defined it for us */ |
2000 | SvREFCNT_dec(LvTARG(sv)); | |
b37c2d43 | 2001 | LvTARG(sv) = SvREFCNT_inc_simple_NN(targ); |
68dc0745 | 2002 | LvTARGLEN(sv) = 0; |
2003 | SvREFCNT_dec(mg->mg_obj); | |
a0714e2c | 2004 | mg->mg_obj = NULL; |
68dc0745 | 2005 | mg->mg_flags &= ~MGf_REFCOUNTED; |
2006 | } | |
5f05dabc | 2007 | } |
71be2cbc | 2008 | else |
2009 | targ = LvTARG(sv); | |
3280af22 | 2010 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 2011 | return 0; |
2012 | } | |
2013 | ||
2014 | int | |
864dbfa3 | 2015 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 2016 | { |
8772537c | 2017 | PERL_UNUSED_ARG(mg); |
71be2cbc | 2018 | if (LvTARGLEN(sv)) |
68dc0745 | 2019 | vivify_defelem(sv); |
2020 | if (LvTARG(sv)) { | |
5f05dabc | 2021 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 2022 | SvSETMAGIC(LvTARG(sv)); |
2023 | } | |
5f05dabc | 2024 | return 0; |
2025 | } | |
2026 | ||
71be2cbc | 2027 | void |
864dbfa3 | 2028 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 2029 | { |
97aff369 | 2030 | dVAR; |
74e13ce4 | 2031 | MAGIC *mg; |
a0714e2c | 2032 | SV *value = NULL; |
71be2cbc | 2033 | |
14befaf4 | 2034 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 2035 | return; |
68dc0745 | 2036 | if (mg->mg_obj) { |
8772537c AL |
2037 | SV * const ahv = LvTARG(sv); |
2038 | HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); | |
6d822dc4 MS |
2039 | if (he) |
2040 | value = HeVAL(he); | |
3280af22 | 2041 | if (!value || value == &PL_sv_undef) |
be2597df | 2042 | Perl_croak(aTHX_ PL_no_helem_sv, SVfARG(mg->mg_obj)); |
71be2cbc | 2043 | } |
68dc0745 | 2044 | else { |
8772537c | 2045 | AV* const av = (AV*)LvTARG(sv); |
5aabfad6 | 2046 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
a0714e2c | 2047 | LvTARG(sv) = NULL; /* array can't be extended */ |
68dc0745 | 2048 | else { |
d4c19fe8 | 2049 | SV* const * const svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 | 2050 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 2051 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 2052 | } |
2053 | } | |
b37c2d43 | 2054 | SvREFCNT_inc_simple_void(value); |
68dc0745 | 2055 | SvREFCNT_dec(LvTARG(sv)); |
2056 | LvTARG(sv) = value; | |
71be2cbc | 2057 | LvTARGLEN(sv) = 0; |
68dc0745 | 2058 | SvREFCNT_dec(mg->mg_obj); |
a0714e2c | 2059 | mg->mg_obj = NULL; |
68dc0745 | 2060 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc | 2061 | } |
2062 | ||
2063 | int | |
864dbfa3 | 2064 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 | 2065 | { |
86f55936 | 2066 | return Perl_sv_kill_backrefs(aTHX_ sv, (AV*)mg->mg_obj); |
810b8aa5 GS |
2067 | } |
2068 | ||
2069 | int | |
864dbfa3 | 2070 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 2071 | { |
96a5add6 | 2072 | PERL_UNUSED_CONTEXT; |
565764a8 | 2073 | mg->mg_len = -1; |
c6496cc7 | 2074 | SvSCREAM_off(sv); |
93a17b20 LW |
2075 | return 0; |
2076 | } | |
2077 | ||
2078 | int | |
864dbfa3 | 2079 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2080 | { |
8772537c | 2081 | PERL_UNUSED_ARG(mg); |
14befaf4 | 2082 | sv_unmagic(sv, PERL_MAGIC_bm); |
b84d1fce | 2083 | SvTAIL_off(sv); |
79072805 LW |
2084 | SvVALID_off(sv); |
2085 | return 0; | |
2086 | } | |
2087 | ||
2088 | int | |
864dbfa3 | 2089 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 2090 | { |
8772537c | 2091 | PERL_UNUSED_ARG(mg); |
14befaf4 | 2092 | sv_unmagic(sv, PERL_MAGIC_fm); |
55497cff | 2093 | SvCOMPILED_off(sv); |
2094 | return 0; | |
2095 | } | |
2096 | ||
2097 | int | |
864dbfa3 | 2098 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2099 | { |
35a4481c | 2100 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 LW |
2101 | |
2102 | if (uf && uf->uf_set) | |
24f81a43 | 2103 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2104 | return 0; |
2105 | } | |
2106 | ||
c277df42 | 2107 | int |
faf82a0b AE |
2108 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2109 | { | |
8772537c | 2110 | PERL_UNUSED_ARG(mg); |
faf82a0b AE |
2111 | sv_unmagic(sv, PERL_MAGIC_qr); |
2112 | return 0; | |
2113 | } | |
2114 | ||
2115 | int | |
864dbfa3 | 2116 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 | 2117 | { |
97aff369 | 2118 | dVAR; |
8772537c AL |
2119 | regexp * const re = (regexp *)mg->mg_obj; |
2120 | PERL_UNUSED_ARG(sv); | |
2121 | ||
c277df42 IZ |
2122 | ReREFCNT_dec(re); |
2123 | return 0; | |
2124 | } | |
2125 | ||
7a4c00b4 | 2126 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2127 | int |
864dbfa3 | 2128 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2129 | { |
2130 | /* | |
838b5b74 | 2131 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2132 | * and vanished with a faint plop. |
2133 | */ | |
96a5add6 | 2134 | PERL_UNUSED_CONTEXT; |
8772537c | 2135 | PERL_UNUSED_ARG(sv); |
7a4c00b4 | 2136 | if (mg->mg_ptr) { |
2137 | Safefree(mg->mg_ptr); | |
2138 | mg->mg_ptr = NULL; | |
565764a8 | 2139 | mg->mg_len = -1; |
7a4c00b4 | 2140 | } |
bbce6d69 | 2141 | return 0; |
2142 | } | |
7a4c00b4 | 2143 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2144 | |
7e8c5dac HS |
2145 | /* Just clear the UTF-8 cache data. */ |
2146 | int | |
2147 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2148 | { | |
96a5add6 | 2149 | PERL_UNUSED_CONTEXT; |
8772537c | 2150 | PERL_UNUSED_ARG(sv); |
7e8c5dac | 2151 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
3881461a | 2152 | mg->mg_ptr = NULL; |
7e8c5dac HS |
2153 | mg->mg_len = -1; /* The mg_len holds the len cache. */ |
2154 | return 0; | |
2155 | } | |
2156 | ||
bbce6d69 | 2157 | int |
864dbfa3 | 2158 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2159 | { |
97aff369 | 2160 | dVAR; |
e1ec3a88 | 2161 | register const char *s; |
79072805 | 2162 | I32 i; |
8990e307 | 2163 | STRLEN len; |
79072805 | 2164 | switch (*mg->mg_ptr) { |
748a9306 | 2165 | case '\001': /* ^A */ |
3280af22 | 2166 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 2167 | break; |
49460fe6 | 2168 | case '\003': /* ^C */ |
38ab35f8 | 2169 | PL_minus_c = (bool)SvIV(sv); |
49460fe6 NIS |
2170 | break; |
2171 | ||
79072805 | 2172 | case '\004': /* ^D */ |
b4ab917c | 2173 | #ifdef DEBUGGING |
b83604b4 | 2174 | s = SvPV_nolen_const(sv); |
ddcf8bc1 | 2175 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
79072805 | 2176 | DEBUG_x(dump_all()); |
b4ab917c | 2177 | #else |
38ab35f8 | 2178 | PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG; |
b4ab917c | 2179 | #endif |
79072805 | 2180 | break; |
28f23441 | 2181 | case '\005': /* ^E */ |
d0063567 | 2182 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 2183 | #ifdef MACOS_TRADITIONAL |
38ab35f8 | 2184 | gMacPerl_OSErr = SvIV(sv); |
28f23441 | 2185 | #else |
cd39f2b6 | 2186 | # ifdef VMS |
38ab35f8 | 2187 | set_vaxc_errno(SvIV(sv)); |
048c1ddf | 2188 | # else |
cd39f2b6 | 2189 | # ifdef WIN32 |
d0063567 | 2190 | SetLastError( SvIV(sv) ); |
cd39f2b6 | 2191 | # else |
9fed8b87 | 2192 | # ifdef OS2 |
38ab35f8 | 2193 | os2_setsyserrno(SvIV(sv)); |
9fed8b87 | 2194 | # else |
d0063567 | 2195 | /* will anyone ever use this? */ |
38ab35f8 | 2196 | SETERRNO(SvIV(sv), 4); |
cd39f2b6 | 2197 | # endif |
048c1ddf IZ |
2198 | # endif |
2199 | # endif | |
22fae026 | 2200 | #endif |
d0063567 DK |
2201 | } |
2202 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
2203 | if (PL_encoding) | |
2204 | SvREFCNT_dec(PL_encoding); | |
2205 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2206 | PL_encoding = newSVsv(sv); | |
2207 | } | |
2208 | else { | |
a0714e2c | 2209 | PL_encoding = NULL; |
d0063567 DK |
2210 | } |
2211 | } | |
2212 | break; | |
79072805 | 2213 | case '\006': /* ^F */ |
38ab35f8 | 2214 | PL_maxsysfd = SvIV(sv); |
79072805 | 2215 | break; |
a0d0e21e | 2216 | case '\010': /* ^H */ |
38ab35f8 | 2217 | PL_hints = SvIV(sv); |
a0d0e21e | 2218 | break; |
9d116dd7 | 2219 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
43c5f42d | 2220 | Safefree(PL_inplace); |
bd61b366 | 2221 | PL_inplace = SvOK(sv) ? savesvpv(sv) : NULL; |
da78da6e | 2222 | break; |
28f23441 | 2223 | case '\017': /* ^O */ |
ac27b0f5 | 2224 | if (*(mg->mg_ptr+1) == '\0') { |
43c5f42d | 2225 | Safefree(PL_osname); |
bd61b366 | 2226 | PL_osname = NULL; |
3511154c DM |
2227 | if (SvOK(sv)) { |
2228 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2229 | PL_osname = savesvpv(sv); |
3511154c | 2230 | } |
ac27b0f5 NIS |
2231 | } |
2232 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
11bcd5da NC |
2233 | PL_compiling.cop_hints |= HINT_LEXICAL_IO; |
2234 | PL_hints |= HINT_LOCALIZE_HH | HINT_LEXICAL_IO; | |
2235 | PL_compiling.cop_hints_hash | |
2236 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
2237 | sv_2mortal(newSVpvs("open")), sv); | |
ac27b0f5 | 2238 | } |
28f23441 | 2239 | break; |
79072805 | 2240 | case '\020': /* ^P */ |
38ab35f8 | 2241 | PL_perldb = SvIV(sv); |
f2a7f298 | 2242 | if (PL_perldb && !PL_DBsingle) |
1ee4443e | 2243 | init_debugger(); |
79072805 LW |
2244 | break; |
2245 | case '\024': /* ^T */ | |
88e89b8a | 2246 | #ifdef BIG_TIME |
6b88bc9c | 2247 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2248 | #else |
38ab35f8 | 2249 | PL_basetime = (Time_t)SvIV(sv); |
88e89b8a | 2250 | #endif |
79072805 | 2251 | break; |
e07ea26a NC |
2252 | case '\025': /* ^UTF8CACHE */ |
2253 | if (strEQ(mg->mg_ptr+1, "TF8CACHE")) { | |
2254 | PL_utf8cache = (signed char) sv_2iv(sv); | |
2255 | } | |
2256 | break; | |
fde18df1 | 2257 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2258 | if (*(mg->mg_ptr+1) == '\0') { |
2259 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
38ab35f8 | 2260 | i = SvIV(sv); |
ac27b0f5 | 2261 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2262 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2263 | } |
599cee73 | 2264 | } |
0a378802 | 2265 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2266 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2267 | if (!SvPOK(sv) && PL_localizing) { |
2268 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2269 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2270 | break; |
2271 | } | |
f4fc7782 | 2272 | { |
b5477537 | 2273 | STRLEN len, i; |
d3a7d8c7 | 2274 | int accumulate = 0 ; |
f4fc7782 | 2275 | int any_fatals = 0 ; |
b83604b4 | 2276 | const char * const ptr = SvPV_const(sv, len) ; |
f4fc7782 JH |
2277 | for (i = 0 ; i < len ; ++i) { |
2278 | accumulate |= ptr[i] ; | |
2279 | any_fatals |= (ptr[i] & 0xAA) ; | |
2280 | } | |
4243c432 NC |
2281 | if (!accumulate) { |
2282 | if (!specialWARN(PL_compiling.cop_warnings)) | |
2283 | PerlMemShared_free(PL_compiling.cop_warnings); | |
2284 | PL_compiling.cop_warnings = pWARN_NONE; | |
2285 | } | |
72dc9ed5 NC |
2286 | /* Yuck. I can't see how to abstract this: */ |
2287 | else if (isWARN_on(((STRLEN *)SvPV_nolen_const(sv)) - 1, | |
2288 | WARN_ALL) && !any_fatals) { | |
4243c432 NC |
2289 | if (!specialWARN(PL_compiling.cop_warnings)) |
2290 | PerlMemShared_free(PL_compiling.cop_warnings); | |
f4fc7782 JH |
2291 | PL_compiling.cop_warnings = pWARN_ALL; |
2292 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2293 | } |
d3a7d8c7 | 2294 | else { |
72dc9ed5 NC |
2295 | STRLEN len; |
2296 | const char *const p = SvPV_const(sv, len); | |
2297 | ||
2298 | PL_compiling.cop_warnings | |
8ee4cf24 | 2299 | = Perl_new_warnings_bitfield(aTHX_ PL_compiling.cop_warnings, |
72dc9ed5 NC |
2300 | p, len); |
2301 | ||
d3a7d8c7 GS |
2302 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
2303 | PL_dowarn |= G_WARN_ONCE ; | |
2304 | } | |
f4fc7782 | 2305 | |
d3a7d8c7 | 2306 | } |
4438c4b7 | 2307 | } |
971a9dd3 | 2308 | } |
79072805 LW |
2309 | break; |
2310 | case '.': | |
3280af22 NIS |
2311 | if (PL_localizing) { |
2312 | if (PL_localizing == 1) | |
7766f137 | 2313 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2314 | } |
3280af22 | 2315 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2316 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2317 | break; |
2318 | case '^': | |
3280af22 | 2319 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2320 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
f776e3cd | 2321 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); |
79072805 LW |
2322 | break; |
2323 | case '~': | |
3280af22 | 2324 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2325 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
f776e3cd | 2326 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO); |
79072805 LW |
2327 | break; |
2328 | case '=': | |
38ab35f8 | 2329 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2330 | break; |
2331 | case '-': | |
38ab35f8 | 2332 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
3280af22 NIS |
2333 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
2334 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
2335 | break; |
2336 | case '%': | |
38ab35f8 | 2337 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv)); |
79072805 LW |
2338 | break; |
2339 | case '|': | |
4b65379b | 2340 | { |
8772537c | 2341 | IO * const io = GvIOp(PL_defoutgv); |
720f287d AB |
2342 | if(!io) |
2343 | break; | |
38ab35f8 | 2344 | if ((SvIV(sv)) == 0) |
4b65379b CS |
2345 | IoFLAGS(io) &= ~IOf_FLUSH; |
2346 | else { | |
2347 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2348 | PerlIO *ofp = IoOFP(io); | |
2349 | if (ofp) | |
2350 | (void)PerlIO_flush(ofp); | |
2351 | IoFLAGS(io) |= IOf_FLUSH; | |
2352 | } | |
2353 | } | |
79072805 LW |
2354 | } |
2355 | break; | |
79072805 | 2356 | case '/': |
3280af22 | 2357 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2358 | PL_rs = newSVsv(sv); |
79072805 LW |
2359 | break; |
2360 | case '\\': | |
7889fe52 NIS |
2361 | if (PL_ors_sv) |
2362 | SvREFCNT_dec(PL_ors_sv); | |
009c130f | 2363 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2364 | PL_ors_sv = newSVsv(sv); |
009c130f | 2365 | } |
e3c19b7b | 2366 | else { |
a0714e2c | 2367 | PL_ors_sv = NULL; |
e3c19b7b | 2368 | } |
79072805 LW |
2369 | break; |
2370 | case ',': | |
7889fe52 NIS |
2371 | if (PL_ofs_sv) |
2372 | SvREFCNT_dec(PL_ofs_sv); | |
2373 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2374 | PL_ofs_sv = newSVsv(sv); | |
2375 | } | |
2376 | else { | |
a0714e2c | 2377 | PL_ofs_sv = NULL; |
7889fe52 | 2378 | } |
79072805 | 2379 | break; |
79072805 | 2380 | case '[': |
38ab35f8 | 2381 | CopARYBASE_set(&PL_compiling, SvIV(sv)); |
79072805 LW |
2382 | break; |
2383 | case '?': | |
ff0cee69 | 2384 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
2385 | if (PL_localizing == 2) { |
2386 | PL_statusvalue = LvTARGOFF(sv); | |
2387 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2388 | } |
2389 | else | |
2390 | #endif | |
2391 | #ifdef VMSISH_STATUS | |
2392 | if (VMSISH_STATUS) | |
fb38d079 | 2393 | STATUS_NATIVE_CHILD_SET((U32)SvIV(sv)); |
ff0cee69 | 2394 | else |
2395 | #endif | |
38ab35f8 | 2396 | STATUS_UNIX_EXIT_SET(SvIV(sv)); |
79072805 LW |
2397 | break; |
2398 | case '!': | |
93189314 JH |
2399 | { |
2400 | #ifdef VMS | |
2401 | # define PERL_VMS_BANG vaxc$errno | |
2402 | #else | |
2403 | # define PERL_VMS_BANG 0 | |
2404 | #endif | |
91487cfc | 2405 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2406 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2407 | } | |
79072805 LW |
2408 | break; |
2409 | case '<': | |
38ab35f8 | 2410 | PL_uid = SvIV(sv); |
3280af22 NIS |
2411 | if (PL_delaymagic) { |
2412 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2413 | break; /* don't do magic till later */ |
2414 | } | |
2415 | #ifdef HAS_SETRUID | |
b28d0864 | 2416 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2417 | #else |
2418 | #ifdef HAS_SETREUID | |
3280af22 | 2419 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2420 | #else |
85e6fe83 | 2421 | #ifdef HAS_SETRESUID |
b28d0864 | 2422 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2423 | #else |
75870ed3 | 2424 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2425 | #ifdef PERL_DARWIN | |
2426 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2427 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2428 | (void)PerlProc_setuid(0); | |
2429 | #endif | |
b28d0864 | 2430 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2431 | } else { |
d8eceb89 | 2432 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2433 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2434 | } |
79072805 LW |
2435 | #endif |
2436 | #endif | |
85e6fe83 | 2437 | #endif |
d8eceb89 | 2438 | PL_uid = PerlProc_getuid(); |
3280af22 | 2439 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2440 | break; |
2441 | case '>': | |
38ab35f8 | 2442 | PL_euid = SvIV(sv); |
3280af22 NIS |
2443 | if (PL_delaymagic) { |
2444 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2445 | break; /* don't do magic till later */ |
2446 | } | |
2447 | #ifdef HAS_SETEUID | |
3280af22 | 2448 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2449 | #else |
2450 | #ifdef HAS_SETREUID | |
b28d0864 | 2451 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2452 | #else |
2453 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2454 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2455 | #else |
b28d0864 NIS |
2456 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2457 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2458 | else { |
e8ee3774 | 2459 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2460 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2461 | } |
79072805 LW |
2462 | #endif |
2463 | #endif | |
85e6fe83 | 2464 | #endif |
d8eceb89 | 2465 | PL_euid = PerlProc_geteuid(); |
3280af22 | 2466 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2467 | break; |
2468 | case '(': | |
38ab35f8 | 2469 | PL_gid = SvIV(sv); |
3280af22 NIS |
2470 | if (PL_delaymagic) { |
2471 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2472 | break; /* don't do magic till later */ |
2473 | } | |
2474 | #ifdef HAS_SETRGID | |
b28d0864 | 2475 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2476 | #else |
2477 | #ifdef HAS_SETREGID | |
3280af22 | 2478 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2479 | #else |
2480 | #ifdef HAS_SETRESGID | |
b28d0864 | 2481 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2482 | #else |
b28d0864 NIS |
2483 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2484 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2485 | else { |
d8eceb89 | 2486 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2487 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2488 | } |
79072805 LW |
2489 | #endif |
2490 | #endif | |
85e6fe83 | 2491 | #endif |
d8eceb89 | 2492 | PL_gid = PerlProc_getgid(); |
3280af22 | 2493 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2494 | break; |
2495 | case ')': | |
5cd24f17 | 2496 | #ifdef HAS_SETGROUPS |
2497 | { | |
b83604b4 | 2498 | const char *p = SvPV_const(sv, len); |
757f63d8 SP |
2499 | Groups_t *gary = NULL; |
2500 | ||
2501 | while (isSPACE(*p)) | |
2502 | ++p; | |
2503 | PL_egid = Atol(p); | |
2504 | for (i = 0; i < NGROUPS; ++i) { | |
2505 | while (*p && !isSPACE(*p)) | |
2506 | ++p; | |
2507 | while (isSPACE(*p)) | |
2508 | ++p; | |
2509 | if (!*p) | |
2510 | break; | |
2511 | if(!gary) | |
2512 | Newx(gary, i + 1, Groups_t); | |
2513 | else | |
2514 | Renew(gary, i + 1, Groups_t); | |
2515 | gary[i] = Atol(p); | |
2516 | } | |
2517 | if (i) | |
2518 | (void)setgroups(i, gary); | |
f5a63d97 | 2519 | Safefree(gary); |
5cd24f17 | 2520 | } |
2521 | #else /* HAS_SETGROUPS */ | |
38ab35f8 | 2522 | PL_egid = SvIV(sv); |
5cd24f17 | 2523 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2524 | if (PL_delaymagic) { |
2525 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2526 | break; /* don't do magic till later */ |
2527 | } | |
2528 | #ifdef HAS_SETEGID | |
3280af22 | 2529 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2530 | #else |
2531 | #ifdef HAS_SETREGID | |
b28d0864 | 2532 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2533 | #else |
2534 | #ifdef HAS_SETRESGID | |
b28d0864 | 2535 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2536 | #else |
b28d0864 NIS |
2537 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2538 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2539 | else { |
d8eceb89 | 2540 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2541 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2542 | } |
79072805 LW |
2543 | #endif |
2544 | #endif | |
85e6fe83 | 2545 | #endif |
d8eceb89 | 2546 | PL_egid = PerlProc_getegid(); |
3280af22 | 2547 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2548 | break; |
2549 | case ':': | |
2d8e6c8d | 2550 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2551 | break; |
cd39f2b6 | 2552 | #ifndef MACOS_TRADITIONAL |
79072805 | 2553 | case '0': |
e2975953 | 2554 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2555 | #ifdef HAS_SETPROCTITLE |
2556 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2557 | * show a string from the process struct and provide | |
2558 | * the setproctitle() routine to manipulate that. */ | |
a2722ac9 | 2559 | if (PL_origalen != 1) { |
b83604b4 | 2560 | s = SvPV_const(sv, len); |
98b76f99 | 2561 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2562 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2563 | * but not the "(perl) suffix from the ps(1) |
2564 | * output, because that's what ps(1) shows if the | |
2565 | * argv[] is modified. */ | |
6f2ad931 | 2566 | setproctitle("-%s", s); |
9aad2c0e | 2567 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2568 | /* This doesn't really work if you assume that |
2569 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2570 | * because in ps(1) output the result will be like | |
2571 | * sprintf("perl: %s (perl)", s) | |
2572 | * I guess this is a security feature: | |
2573 | * one (a user process) cannot get rid of the original name. | |
2574 | * --jhi */ | |
2575 | setproctitle("%s", s); | |
2576 | # endif | |
2577 | } | |
9d3968b2 | 2578 | #elif defined(__hpux) && defined(PSTAT_SETCMD) |
a2722ac9 | 2579 | if (PL_origalen != 1) { |
17aa7f3d | 2580 | union pstun un; |
b83604b4 | 2581 | s = SvPV_const(sv, len); |
6867be6d | 2582 | un.pst_command = (char *)s; |
17aa7f3d JH |
2583 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2584 | } | |
9d3968b2 | 2585 | #else |
2d2af554 GA |
2586 | if (PL_origalen > 1) { |
2587 | /* PL_origalen is set in perl_parse(). */ | |
2588 | s = SvPV_force(sv,len); | |
2589 | if (len >= (STRLEN)PL_origalen-1) { | |
2590 | /* Longer than original, will be truncated. We assume that | |
2591 | * PL_origalen bytes are available. */ | |
2592 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
2593 | } | |
2594 | else { | |
2595 | /* Shorter than original, will be padded. */ | |
235ac35d | 2596 | #ifdef PERL_DARWIN |
60777a0d JH |
2597 | /* Special case for Mac OS X: see [perl #38868] */ |
2598 | const int pad = 0; | |
235ac35d | 2599 | #else |
8a89a4f1 MB |
2600 | /* Is the space counterintuitive? Yes. |
2601 | * (You were expecting \0?) | |
2602 | * Does it work? Seems to. (In Linux 2.4.20 at least.) | |
2603 | * --jhi */ | |
60777a0d | 2604 | const int pad = ' '; |
235ac35d | 2605 | #endif |
60777a0d JH |
2606 | Copy(s, PL_origargv[0], len, char); |
2607 | PL_origargv[0][len] = 0; | |
2608 | memset(PL_origargv[0] + len + 1, | |
2609 | pad, PL_origalen - len - 1); | |
2d2af554 GA |
2610 | } |
2611 | PL_origargv[0][PL_origalen-1] = 0; | |
2612 | for (i = 1; i < PL_origargc; i++) | |
2613 | PL_origargv[i] = 0; | |
79072805 | 2614 | } |
9d3968b2 | 2615 | #endif |
e2975953 | 2616 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 | 2617 | break; |
cd39f2b6 | 2618 | #endif |
79072805 LW |
2619 | } |
2620 | return 0; | |
2621 | } | |
2622 | ||
2623 | I32 | |
35a4481c | 2624 | Perl_whichsig(pTHX_ const char *sig) |
79072805 | 2625 | { |
aadb217d | 2626 | register char* const* sigv; |
96a5add6 | 2627 | PERL_UNUSED_CONTEXT; |
79072805 | 2628 | |
aadb217d | 2629 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
79072805 | 2630 | if (strEQ(sig,*sigv)) |
aadb217d | 2631 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 LW |
2632 | #ifdef SIGCLD |
2633 | if (strEQ(sig,"CHLD")) | |
2634 | return SIGCLD; | |
2635 | #endif | |
2636 | #ifdef SIGCHLD | |
2637 | if (strEQ(sig,"CLD")) | |
2638 | return SIGCHLD; | |
2639 | #endif | |
7f1236c0 | 2640 | return -1; |
79072805 LW |
2641 | } |
2642 | ||
ecfc5424 | 2643 | Signal_t |
1e82f5a6 | 2644 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
8aad04aa | 2645 | Perl_sighandler(int sig, ...) |
1e82f5a6 SH |
2646 | #else |
2647 | Perl_sighandler(int sig) | |
2648 | #endif | |
79072805 | 2649 | { |
1018e26f NIS |
2650 | #ifdef PERL_GET_SIG_CONTEXT |
2651 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 2652 | #else |
cea2e8a9 | 2653 | dTHX; |
71d280e3 | 2654 | #endif |
79072805 | 2655 | dSP; |
a0714e2c SS |
2656 | GV *gv = NULL; |
2657 | SV *sv = NULL; | |
8772537c | 2658 | SV * const tSv = PL_Sv; |
601f1833 | 2659 | CV *cv = NULL; |
533c011a | 2660 | OP *myop = PL_op; |
84902520 | 2661 | U32 flags = 0; |
8772537c | 2662 | XPV * const tXpv = PL_Xpv; |
71d280e3 | 2663 | |
3280af22 | 2664 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2665 | flags |= 1; |
3280af22 | 2666 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2667 | flags |= 4; |
3280af22 | 2668 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2669 | flags |= 16; |
2670 | ||
727405f8 | 2671 | if (!PL_psig_ptr[sig]) { |
99ef548b | 2672 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
2673 | PL_sig_name[sig]); |
2674 | exit(sig); | |
2675 | } | |
ff0cee69 | 2676 | |
84902520 TB |
2677 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2678 | infinity, so we fix 4 (in fact 5): */ | |
2679 | if (flags & 1) { | |
3280af22 | 2680 | PL_savestack_ix += 5; /* Protect save in progress. */ |
8772537c | 2681 | SAVEDESTRUCTOR_X(S_unwind_handler_stack, (void*)&flags); |
84902520 | 2682 | } |
ac27b0f5 | 2683 | if (flags & 4) |
3280af22 | 2684 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2685 | if (flags & 16) |
3280af22 | 2686 | PL_scopestack_ix += 1; |
84902520 | 2687 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ac27b0f5 | 2688 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
8772537c AL |
2689 | || SvTYPE(cv) != SVt_PVCV) { |
2690 | HV *st; | |
f2c0649b | 2691 | cv = sv_2cv(PL_psig_ptr[sig], &st, &gv, GV_ADD); |
8772537c | 2692 | } |
84902520 | 2693 | |
a0d0e21e | 2694 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2695 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 2696 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2697 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2698 | : ((cv && CvGV(cv)) |
2699 | ? GvENAME(CvGV(cv)) | |
2700 | : "__ANON__"))); | |
2701 | goto cleanup; | |
79072805 LW |
2702 | } |
2703 | ||
22c35a8c | 2704 | if(PL_psig_name[sig]) { |
b37c2d43 | 2705 | sv = SvREFCNT_inc_NN(PL_psig_name[sig]); |
84902520 | 2706 | flags |= 64; |
df3728a2 | 2707 | #if !defined(PERL_IMPLICIT_CONTEXT) |
27da23d5 | 2708 | PL_sig_sv = sv; |
df3728a2 | 2709 | #endif |
84902520 | 2710 | } else { |
ff0cee69 | 2711 | sv = sv_newmortal(); |
22c35a8c | 2712 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2713 | } |
e336de0d | 2714 | |
e788e7d3 | 2715 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2716 | PUSHMARK(SP); |
79072805 | 2717 | PUSHs(sv); |
8aad04aa JH |
2718 | #if defined(HAS_SIGACTION) && defined(SA_SIGINFO) |
2719 | { | |
2720 | struct sigaction oact; | |
2721 | ||
2722 | if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) { | |
2723 | siginfo_t *sip; | |
2724 | va_list args; | |
2725 | ||
2726 | va_start(args, sig); | |
2727 | sip = (siginfo_t*)va_arg(args, siginfo_t*); | |
2728 | if (sip) { | |
2729 | HV *sih = newHV(); | |
2730 | SV *rv = newRV_noinc((SV*)sih); | |
2731 | /* The siginfo fields signo, code, errno, pid, uid, | |
2732 | * addr, status, and band are defined by POSIX/SUSv3. */ | |
2733 | hv_store(sih, "signo", 5, newSViv(sip->si_signo), 0); | |
2734 | hv_store(sih, "code", 4, newSViv(sip->si_code), 0); | |
79dec0f4 | 2735 | #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 | 2736 | hv_store(sih, "errno", 5, newSViv(sip->si_errno), 0); |
79dec0f4 | 2737 | hv_store(sih, "status", 6, newSViv(sip->si_status), 0); |
8aad04aa JH |
2738 | hv_store(sih, "uid", 3, newSViv(sip->si_uid), 0); |
2739 | hv_store(sih, "pid", 3, newSViv(sip->si_pid), 0); | |
2740 | hv_store(sih, "addr", 4, newSVuv(PTR2UV(sip->si_addr)), 0); | |
8aad04aa | 2741 | hv_store(sih, "band", 4, newSViv(sip->si_band), 0); |
79dec0f4 | 2742 | #endif |
8aad04aa JH |
2743 | EXTEND(SP, 2); |
2744 | PUSHs((SV*)rv); | |
10edeb5d | 2745 | PUSHs(newSVpv((char *)sip, sizeof(*sip))); |
8aad04aa | 2746 | } |
b4552a27 | 2747 | |
31427afe | 2748 | va_end(args); |
8aad04aa JH |
2749 | } |
2750 | } | |
2751 | #endif | |
79072805 | 2752 | PUTBACK; |
a0d0e21e | 2753 | |
1b266415 | 2754 | call_sv((SV*)cv, G_DISCARD|G_EVAL); |
79072805 | 2755 | |
d3acc0f7 | 2756 | POPSTACK; |
1b266415 | 2757 | if (SvTRUE(ERRSV)) { |
1d615522 | 2758 | #ifndef PERL_MICRO |
983dbef6 | 2759 | #ifdef HAS_SIGPROCMASK |
1b266415 NIS |
2760 | /* Handler "died", for example to get out of a restart-able read(). |
2761 | * Before we re-do that on its behalf re-enable the signal which was | |
2762 | * blocked by the system when we entered. | |
2763 | */ | |
2764 | sigset_t set; | |
2765 | sigemptyset(&set); | |
2766 | sigaddset(&set,sig); | |
2767 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
2768 | #else | |
2769 | /* Not clear if this will work */ | |
2770 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 2771 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 | 2772 | #endif |
1d615522 | 2773 | #endif /* !PERL_MICRO */ |
bd61b366 | 2774 | Perl_die(aTHX_ NULL); |
1b266415 | 2775 | } |
00d579c5 | 2776 | cleanup: |
84902520 | 2777 | if (flags & 1) |
3280af22 | 2778 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 | 2779 | if (flags & 4) |
3280af22 | 2780 | PL_markstack_ptr--; |
84902520 | 2781 | if (flags & 16) |
3280af22 | 2782 | PL_scopestack_ix -= 1; |
84902520 TB |
2783 | if (flags & 64) |
2784 | SvREFCNT_dec(sv); | |
533c011a | 2785 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 2786 | |
3280af22 NIS |
2787 | PL_Sv = tSv; /* Restore global temporaries. */ |
2788 | PL_Xpv = tXpv; | |
53bb94e2 | 2789 | return; |
79072805 | 2790 | } |
4e35701f NIS |
2791 | |
2792 | ||
51371543 | 2793 | static void |
8772537c | 2794 | S_restore_magic(pTHX_ const void *p) |
51371543 | 2795 | { |
97aff369 | 2796 | dVAR; |
8772537c AL |
2797 | MGS* const mgs = SSPTR(PTR2IV(p), MGS*); |
2798 | SV* const sv = mgs->mgs_sv; | |
51371543 GS |
2799 | |
2800 | if (!sv) | |
2801 | return; | |
2802 | ||
2803 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2804 | { | |
f8c7b90f | 2805 | #ifdef PERL_OLD_COPY_ON_WRITE |
f9701176 NC |
2806 | /* While magic was saved (and off) sv_setsv may well have seen |
2807 | this SV as a prime candidate for COW. */ | |
2808 | if (SvIsCOW(sv)) | |
e424a81e | 2809 | sv_force_normal_flags(sv, 0); |
f9701176 NC |
2810 | #endif |
2811 | ||
51371543 GS |
2812 | if (mgs->mgs_flags) |
2813 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2814 | else | |
2815 | mg_magical(sv); | |
2b77b520 YST |
2816 | if (SvGMAGICAL(sv)) { |
2817 | /* downgrade public flags to private, | |
2818 | and discard any other private flags */ | |
2819 | ||
10edeb5d JH |
2820 | const U32 pubflags = SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK); |
2821 | if (pubflags) { | |
2822 | SvFLAGS(sv) &= ~( pubflags | (SVp_IOK|SVp_NOK|SVp_POK) ); | |
2823 | SvFLAGS(sv) |= ( pubflags << PRIVSHIFT ); | |
2b77b520 YST |
2824 | } |
2825 | } | |
51371543 GS |
2826 | } |
2827 | ||
2828 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2829 | ||
2830 | /* If we're still on top of the stack, pop us off. (That condition | |
2831 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2832 | * if it's being called via leave_scope.) | |
2833 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2834 | * may leave alloc gunk on the savestack, and some code | |
2835 | * (e.g. sighandler) doesn't expect that... | |
2836 | */ | |
2837 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2838 | { | |
2839 | I32 popval = SSPOPINT; | |
c76ac1ee | 2840 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2841 | PL_savestack_ix -= 2; |
2842 | popval = SSPOPINT; | |
2843 | assert(popval == SAVEt_ALLOC); | |
2844 | popval = SSPOPINT; | |
2845 | PL_savestack_ix -= popval; | |
2846 | } | |
2847 | ||
2848 | } | |
2849 | ||
2850 | static void | |
8772537c | 2851 | S_unwind_handler_stack(pTHX_ const void *p) |
51371543 | 2852 | { |
27da23d5 | 2853 | dVAR; |
e1ec3a88 | 2854 | const U32 flags = *(const U32*)p; |
51371543 GS |
2855 | |
2856 | if (flags & 1) | |
2857 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
df3728a2 | 2858 | #if !defined(PERL_IMPLICIT_CONTEXT) |
51371543 | 2859 | if (flags & 64) |
27da23d5 | 2860 | SvREFCNT_dec(PL_sig_sv); |
df3728a2 | 2861 | #endif |
51371543 | 2862 | } |
1018e26f | 2863 | |
66610fdd | 2864 | /* |
b3ca2e83 NC |
2865 | =for apidoc magic_sethint |
2866 | ||
2867 | Triggered by a store to %^H, records the key/value pair to | |
c28fe1ec NC |
2868 | C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing |
2869 | anything that would need a deep copy. Maybe we should warn if we find a | |
2870 | reference. | |
b3ca2e83 NC |
2871 | |
2872 | =cut | |
2873 | */ | |
2874 | int | |
2875 | Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg) | |
2876 | { | |
2877 | dVAR; | |
2878 | assert(mg->mg_len == HEf_SVKEY); | |
2879 | ||
e6e3e454 NC |
2880 | /* mg->mg_obj isn't being used. If needed, it would be possible to store |
2881 | an alternative leaf in there, with PL_compiling.cop_hints being used if | |
2882 | it's NULL. If needed for threads, the alternative could lock a mutex, | |
2883 | or take other more complex action. */ | |
2884 | ||
5b9c0671 NC |
2885 | /* Something changed in %^H, so it will need to be restored on scope exit. |
2886 | Doing this here saves a lot of doing it manually in perl code (and | |
2887 | forgetting to do it, and consequent subtle errors. */ | |
2888 | PL_hints |= HINT_LOCALIZE_HH; | |
c28fe1ec NC |
2889 | PL_compiling.cop_hints_hash |
2890 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
ec2a1de7 | 2891 | (SV *)mg->mg_ptr, sv); |
b3ca2e83 NC |
2892 | return 0; |
2893 | } | |
2894 | ||
2895 | /* | |
2896 | =for apidoc magic_sethint | |
2897 | ||
c28fe1ec NC |
2898 | Triggered by a delete from %^H, records the key to |
2899 | C<PL_compiling.cop_hints_hash>. | |
b3ca2e83 NC |
2900 | |
2901 | =cut | |
2902 | */ | |
2903 | int | |
2904 | Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg) | |
2905 | { | |
2906 | dVAR; | |
f5a63d97 AL |
2907 | PERL_UNUSED_ARG(sv); |
2908 | ||
b3ca2e83 NC |
2909 | assert(mg->mg_len == HEf_SVKEY); |
2910 | ||
b3f24c00 MHM |
2911 | PERL_UNUSED_ARG(sv); |
2912 | ||
5b9c0671 | 2913 | PL_hints |= HINT_LOCALIZE_HH; |
c28fe1ec NC |
2914 | PL_compiling.cop_hints_hash |
2915 | = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, | |
b3ca2e83 NC |
2916 | (SV *)mg->mg_ptr, &PL_sv_placeholder); |
2917 | return 0; | |
2918 | } | |
2919 | ||
2920 | /* | |
66610fdd RGS |
2921 | * Local variables: |
2922 | * c-indentation-style: bsd | |
2923 | * c-basic-offset: 4 | |
2924 | * indent-tabs-mode: t | |
2925 | * End: | |
2926 | * | |
37442d52 RGS |
2927 | * ex: set ts=8 sts=4 sw=4 noet: |
2928 | */ |