Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "Sam sat on the ground and put his head in his hands. 'I wish I had never | |
12 | * come here, and I don't want to see no more magic,' he said, and fell silent." | |
79072805 LW |
13 | */ |
14 | ||
15 | #include "EXTERN.h" | |
864dbfa3 | 16 | #define PERL_IN_MG_C |
79072805 LW |
17 | #include "perl.h" |
18 | ||
e6d9441c | 19 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
a0d0e21e LW |
20 | #ifdef I_UNISTD |
21 | # include <unistd.h> | |
22 | #endif | |
a0d0e21e | 23 | |
5cd24f17 | 24 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
188ea221 CS |
25 | # ifndef NGROUPS |
26 | # define NGROUPS 32 | |
27 | # endif | |
28 | #endif | |
29 | ||
455ece5e AD |
30 | #ifdef PERL_OBJECT |
31 | # define VTBL this->*vtbl | |
32 | #else | |
33 | # define VTBL *vtbl | |
455ece5e AD |
34 | #endif |
35 | ||
51371543 GS |
36 | static void restore_magic(pTHXo_ void *p); |
37 | static void unwind_handler_stack(pTHXo_ void *p); | |
38 | ||
c07a80fd | 39 | /* |
40 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
41 | */ | |
42 | ||
43 | struct magic_state { | |
44 | SV* mgs_sv; | |
45 | U32 mgs_flags; | |
455ece5e | 46 | I32 mgs_ss_ix; |
c07a80fd | 47 | }; |
455ece5e | 48 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
49 | |
50 | STATIC void | |
cea2e8a9 | 51 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 52 | { |
46124e9e | 53 | dTHR; |
455ece5e | 54 | MGS* mgs; |
c07a80fd | 55 | assert(SvMAGICAL(sv)); |
56 | ||
51371543 | 57 | SAVEDESTRUCTOR(restore_magic, (void*)mgs_ix); |
455ece5e AD |
58 | |
59 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 60 | mgs->mgs_sv = sv; |
61 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); | |
455ece5e | 62 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd | 63 | |
64 | SvMAGICAL_off(sv); | |
65 | SvREADONLY_off(sv); | |
66 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; | |
c07a80fd | 67 | } |
68 | ||
8990e307 | 69 | void |
864dbfa3 | 70 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 LW |
71 | { |
72 | MAGIC* mg; | |
73 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
74 | MGVTBL* vtbl = mg->mg_virtual; | |
75 | if (vtbl) { | |
76e3520e | 76 | if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 LW |
77 | SvGMAGICAL_on(sv); |
78 | if (vtbl->svt_set) | |
79 | SvSMAGICAL_on(sv); | |
76e3520e | 80 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL)) |
8990e307 LW |
81 | SvRMAGICAL_on(sv); |
82 | } | |
83 | } | |
84 | } | |
85 | ||
79072805 | 86 | int |
864dbfa3 | 87 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 88 | { |
46124e9e | 89 | dTHR; |
455ece5e | 90 | I32 mgs_ix; |
79072805 | 91 | MAGIC* mg; |
c6496cc7 | 92 | MAGIC** mgp; |
760ac839 | 93 | int mgp_valid = 0; |
463ee0b2 | 94 | |
455ece5e AD |
95 | mgs_ix = SSNEW(sizeof(MGS)); |
96 | save_magic(mgs_ix, sv); | |
463ee0b2 | 97 | |
c6496cc7 | 98 | mgp = &SvMAGIC(sv); |
99 | while ((mg = *mgp) != 0) { | |
79072805 | 100 | MGVTBL* vtbl = mg->mg_virtual; |
76e3520e | 101 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) { |
cea2e8a9 | 102 | (VTBL->svt_get)(aTHX_ sv, mg); |
c6496cc7 | 103 | /* Ignore this magic if it's been deleted */ |
48e43a1c CS |
104 | if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && |
105 | (mg->mg_flags & MGf_GSKIP)) | |
455ece5e | 106 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 107 | } |
c6496cc7 | 108 | /* Advance to next magic (complicated by possible deletion) */ |
760ac839 | 109 | if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) { |
c6496cc7 | 110 | mgp = &mg->mg_moremagic; |
760ac839 LW |
111 | mgp_valid = 1; |
112 | } | |
113 | else | |
114 | mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */ | |
79072805 | 115 | } |
463ee0b2 | 116 | |
51371543 | 117 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 LW |
118 | return 0; |
119 | } | |
120 | ||
121 | int | |
864dbfa3 | 122 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 123 | { |
46124e9e | 124 | dTHR; |
455ece5e | 125 | I32 mgs_ix; |
79072805 | 126 | MAGIC* mg; |
463ee0b2 LW |
127 | MAGIC* nextmg; |
128 | ||
455ece5e AD |
129 | mgs_ix = SSNEW(sizeof(MGS)); |
130 | save_magic(mgs_ix, sv); | |
463ee0b2 LW |
131 | |
132 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
79072805 | 133 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 134 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
135 | if (mg->mg_flags & MGf_GSKIP) { |
136 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
455ece5e | 137 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 138 | } |
76e3520e | 139 | if (vtbl && (vtbl->svt_set != NULL)) |
cea2e8a9 | 140 | (VTBL->svt_set)(aTHX_ sv, mg); |
79072805 | 141 | } |
463ee0b2 | 142 | |
51371543 | 143 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 LW |
144 | return 0; |
145 | } | |
146 | ||
147 | U32 | |
864dbfa3 | 148 | Perl_mg_length(pTHX_ SV *sv) |
79072805 LW |
149 | { |
150 | MAGIC* mg; | |
748a9306 | 151 | char *junk; |
463ee0b2 | 152 | STRLEN len; |
463ee0b2 | 153 | |
79072805 LW |
154 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
155 | MGVTBL* vtbl = mg->mg_virtual; | |
76e3520e | 156 | if (vtbl && (vtbl->svt_len != NULL)) { |
455ece5e | 157 | I32 mgs_ix; |
48e43a1c | 158 | |
455ece5e AD |
159 | mgs_ix = SSNEW(sizeof(MGS)); |
160 | save_magic(mgs_ix, sv); | |
a0d0e21e | 161 | /* omit MGf_GSKIP -- not changed here */ |
cea2e8a9 | 162 | len = (VTBL->svt_len)(aTHX_ sv, mg); |
51371543 | 163 | restore_magic(aTHXo_ (void*)mgs_ix); |
85e6fe83 LW |
164 | return len; |
165 | } | |
166 | } | |
167 | ||
748a9306 | 168 | junk = SvPV(sv, len); |
463ee0b2 | 169 | return len; |
79072805 LW |
170 | } |
171 | ||
93965878 | 172 | I32 |
864dbfa3 | 173 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
174 | { |
175 | MAGIC* mg; | |
176 | I32 len; | |
177 | ||
178 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
179 | MGVTBL* vtbl = mg->mg_virtual; | |
565764a8 | 180 | if (vtbl && (vtbl->svt_len != NULL)) { |
455ece5e AD |
181 | I32 mgs_ix; |
182 | ||
183 | mgs_ix = SSNEW(sizeof(MGS)); | |
184 | save_magic(mgs_ix, sv); | |
93965878 | 185 | /* omit MGf_GSKIP -- not changed here */ |
cea2e8a9 | 186 | len = (VTBL->svt_len)(aTHX_ sv, mg); |
51371543 | 187 | restore_magic(aTHXo_ (void*)mgs_ix); |
93965878 NIS |
188 | return len; |
189 | } | |
190 | } | |
191 | ||
192 | switch(SvTYPE(sv)) { | |
193 | case SVt_PVAV: | |
194 | len = AvFILLp((AV *) sv); /* Fallback to non-tied array */ | |
195 | return len; | |
196 | case SVt_PVHV: | |
197 | /* FIXME */ | |
198 | default: | |
cea2e8a9 | 199 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
200 | break; |
201 | } | |
202 | return 0; | |
203 | } | |
204 | ||
79072805 | 205 | int |
864dbfa3 | 206 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 207 | { |
455ece5e | 208 | I32 mgs_ix; |
79072805 | 209 | MAGIC* mg; |
463ee0b2 | 210 | |
455ece5e AD |
211 | mgs_ix = SSNEW(sizeof(MGS)); |
212 | save_magic(mgs_ix, sv); | |
463ee0b2 | 213 | |
79072805 LW |
214 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
215 | MGVTBL* vtbl = mg->mg_virtual; | |
a0d0e21e LW |
216 | /* omit GSKIP -- never set here */ |
217 | ||
76e3520e | 218 | if (vtbl && (vtbl->svt_clear != NULL)) |
cea2e8a9 | 219 | (VTBL->svt_clear)(aTHX_ sv, mg); |
79072805 | 220 | } |
463ee0b2 | 221 | |
51371543 | 222 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 LW |
223 | return 0; |
224 | } | |
225 | ||
93a17b20 | 226 | MAGIC* |
864dbfa3 | 227 | Perl_mg_find(pTHX_ SV *sv, int type) |
93a17b20 LW |
228 | { |
229 | MAGIC* mg; | |
93a17b20 LW |
230 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
231 | if (mg->mg_type == type) | |
232 | return mg; | |
233 | } | |
234 | return 0; | |
235 | } | |
236 | ||
79072805 | 237 | int |
864dbfa3 | 238 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 239 | { |
463ee0b2 | 240 | int count = 0; |
79072805 | 241 | MAGIC* mg; |
463ee0b2 LW |
242 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
243 | if (isUPPER(mg->mg_type)) { | |
33c27489 GS |
244 | sv_magic(nsv, |
245 | mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj, | |
246 | toLOWER(mg->mg_type), key, klen); | |
463ee0b2 | 247 | count++; |
79072805 | 248 | } |
79072805 | 249 | } |
463ee0b2 | 250 | return count; |
79072805 LW |
251 | } |
252 | ||
253 | int | |
864dbfa3 | 254 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
255 | { |
256 | MAGIC* mg; | |
257 | MAGIC* moremagic; | |
258 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
259 | MGVTBL* vtbl = mg->mg_virtual; | |
260 | moremagic = mg->mg_moremagic; | |
76e3520e | 261 | if (vtbl && (vtbl->svt_free != NULL)) |
cea2e8a9 | 262 | (VTBL->svt_free)(aTHX_ sv, mg); |
93a17b20 | 263 | if (mg->mg_ptr && mg->mg_type != 'g') |
565764a8 | 264 | if (mg->mg_len >= 0) |
88e89b8a | 265 | Safefree(mg->mg_ptr); |
565764a8 | 266 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 267 | SvREFCNT_dec((SV*)mg->mg_ptr); |
85e6fe83 | 268 | if (mg->mg_flags & MGf_REFCOUNTED) |
8990e307 | 269 | SvREFCNT_dec(mg->mg_obj); |
79072805 LW |
270 | Safefree(mg); |
271 | } | |
272 | SvMAGIC(sv) = 0; | |
273 | return 0; | |
274 | } | |
275 | ||
276 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) | |
277 | #include <signal.h> | |
278 | #endif | |
279 | ||
942e002e | 280 | U32 |
864dbfa3 | 281 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 IZ |
282 | { |
283 | dTHR; | |
284 | register char *s; | |
285 | register I32 i; | |
286 | register REGEXP *rx; | |
287 | char *t; | |
288 | ||
8f580fb8 IZ |
289 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
290 | if (mg->mg_obj) /* @+ */ | |
291 | return rx->nparens; | |
292 | else /* @- */ | |
293 | return rx->lastparen; | |
294 | } | |
295 | ||
942e002e | 296 | return (U32)-1; |
6cef1e77 IZ |
297 | } |
298 | ||
299 | int | |
864dbfa3 | 300 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 IZ |
301 | { |
302 | dTHR; | |
303 | register I32 paren; | |
cf93c79d | 304 | register I32 s; |
6cef1e77 IZ |
305 | register I32 i; |
306 | register REGEXP *rx; | |
cf93c79d | 307 | I32 t; |
6cef1e77 IZ |
308 | |
309 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { | |
310 | paren = mg->mg_len; | |
311 | if (paren < 0) | |
312 | return 0; | |
313 | if (paren <= rx->nparens && | |
cf93c79d IZ |
314 | (s = rx->startp[paren]) != -1 && |
315 | (t = rx->endp[paren]) != -1) | |
6cef1e77 IZ |
316 | { |
317 | if (mg->mg_obj) /* @+ */ | |
cf93c79d | 318 | i = t; |
6cef1e77 | 319 | else /* @- */ |
cf93c79d | 320 | i = s; |
6cef1e77 IZ |
321 | sv_setiv(sv,i); |
322 | } | |
323 | } | |
324 | return 0; | |
325 | } | |
326 | ||
93a17b20 | 327 | U32 |
864dbfa3 | 328 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 329 | { |
a863c7d1 | 330 | dTHR; |
93a17b20 LW |
331 | register I32 paren; |
332 | register char *s; | |
333 | register I32 i; | |
d9f97599 | 334 | register REGEXP *rx; |
748a9306 | 335 | char *t; |
93a17b20 LW |
336 | |
337 | switch (*mg->mg_ptr) { | |
338 | case '1': case '2': case '3': case '4': | |
339 | case '5': case '6': case '7': case '8': case '9': case '&': | |
3280af22 | 340 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
341 | I32 s1, t1; |
342 | ||
93a17b20 LW |
343 | paren = atoi(mg->mg_ptr); |
344 | getparen: | |
d9f97599 | 345 | if (paren <= rx->nparens && |
cf93c79d IZ |
346 | (s1 = rx->startp[paren]) != -1 && |
347 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 348 | { |
cf93c79d | 349 | i = t1 - s1; |
71be2cbc | 350 | if (i >= 0) |
93a17b20 | 351 | return i; |
93a17b20 | 352 | } |
93a17b20 | 353 | } |
748a9306 | 354 | return 0; |
93a17b20 | 355 | case '+': |
3280af22 | 356 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 | 357 | paren = rx->lastparen; |
13f57bf8 CS |
358 | if (paren) |
359 | goto getparen; | |
93a17b20 | 360 | } |
748a9306 | 361 | return 0; |
93a17b20 | 362 | case '`': |
3280af22 | 363 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
364 | if (rx->startp[0] != -1) { |
365 | i = rx->startp[0]; | |
71be2cbc | 366 | if (i >= 0) |
93a17b20 | 367 | return i; |
93a17b20 | 368 | } |
93a17b20 | 369 | } |
748a9306 | 370 | return 0; |
93a17b20 | 371 | case '\'': |
3280af22 | 372 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
373 | if (rx->endp[0] != -1) { |
374 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 375 | if (i >= 0) |
5cd24f17 | 376 | return i; |
93a17b20 | 377 | } |
93a17b20 | 378 | } |
748a9306 | 379 | return 0; |
93a17b20 | 380 | case ',': |
3280af22 | 381 | return (STRLEN)PL_ofslen; |
93a17b20 | 382 | case '\\': |
3280af22 | 383 | return (STRLEN)PL_orslen; |
93a17b20 LW |
384 | } |
385 | magic_get(sv,mg); | |
2d8e6c8d GS |
386 | if (!SvPOK(sv) && SvNIOK(sv)) { |
387 | STRLEN n_a; | |
388 | sv_2pv(sv, &n_a); | |
389 | } | |
93a17b20 LW |
390 | if (SvPOK(sv)) |
391 | return SvCUR(sv); | |
392 | return 0; | |
393 | } | |
394 | ||
79072805 | 395 | int |
864dbfa3 | 396 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 397 | { |
a863c7d1 | 398 | dTHR; |
79072805 LW |
399 | register I32 paren; |
400 | register char *s; | |
401 | register I32 i; | |
d9f97599 | 402 | register REGEXP *rx; |
748a9306 | 403 | char *t; |
79072805 LW |
404 | |
405 | switch (*mg->mg_ptr) { | |
748a9306 | 406 | case '\001': /* ^A */ |
3280af22 | 407 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 408 | break; |
599cee73 | 409 | case '\002': /* ^B */ |
0453d815 PM |
410 | if (PL_curcop->cop_warnings == WARN_NONE || |
411 | PL_curcop->cop_warnings == WARN_STD) | |
412 | { | |
599cee73 | 413 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
0453d815 PM |
414 | } |
415 | else if (PL_curcop->cop_warnings == WARN_ALL) { | |
599cee73 | 416 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; |
0453d815 PM |
417 | } |
418 | else { | |
e24b16f9 | 419 | sv_setsv(sv, PL_curcop->cop_warnings); |
0453d815 | 420 | } |
599cee73 | 421 | break; |
49460fe6 NIS |
422 | case '\003': /* ^C */ |
423 | sv_setiv(sv, (IV)PL_minus_c); | |
424 | break; | |
425 | ||
79072805 | 426 | case '\004': /* ^D */ |
3280af22 | 427 | sv_setiv(sv, (IV)(PL_debug & 32767)); |
79072805 | 428 | break; |
28f23441 | 429 | case '\005': /* ^E */ |
430 | #ifdef VMS | |
431 | { | |
432 | # include <descrip.h> | |
433 | # include <starlet.h> | |
434 | char msg[255]; | |
435 | $DESCRIPTOR(msgdsc,msg); | |
65202027 | 436 | sv_setnv(sv,(NV) vaxc$errno); |
28f23441 | 437 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) |
438 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
439 | else | |
440 | sv_setpv(sv,""); | |
441 | } | |
442 | #else | |
88e89b8a | 443 | #ifdef OS2 |
fb73857a | 444 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
65202027 | 445 | sv_setnv(sv, (NV)errno); |
fb73857a | 446 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
447 | } else { | |
017f25f1 IZ |
448 | if (errno != errno_isOS2) { |
449 | int tmp = _syserrno(); | |
450 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ | |
451 | Perl_rc = tmp; | |
452 | } | |
65202027 | 453 | sv_setnv(sv, (NV)Perl_rc); |
fb73857a | 454 | sv_setpv(sv, os2error(Perl_rc)); |
455 | } | |
88e89b8a | 456 | #else |
22fae026 TM |
457 | #ifdef WIN32 |
458 | { | |
459 | DWORD dwErr = GetLastError(); | |
65202027 | 460 | sv_setnv(sv, (NV)dwErr); |
22fae026 | 461 | if (dwErr) |
76e3520e | 462 | { |
0cb96387 | 463 | PerlProc_GetOSError(sv, dwErr); |
76e3520e | 464 | } |
22fae026 TM |
465 | else |
466 | sv_setpv(sv, ""); | |
467 | SetLastError(dwErr); | |
468 | } | |
469 | #else | |
65202027 | 470 | sv_setnv(sv, (NV)errno); |
28f23441 | 471 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
472 | #endif | |
88e89b8a | 473 | #endif |
22fae026 | 474 | #endif |
946ec16e | 475 | SvNOK_on(sv); /* what a wonderful hack! */ |
28f23441 | 476 | break; |
79072805 | 477 | case '\006': /* ^F */ |
3280af22 | 478 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 479 | break; |
a0d0e21e | 480 | case '\010': /* ^H */ |
3280af22 | 481 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 482 | break; |
9d116dd7 | 483 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
484 | if (PL_inplace) |
485 | sv_setpv(sv, PL_inplace); | |
79072805 | 486 | else |
3280af22 | 487 | sv_setsv(sv, &PL_sv_undef); |
79072805 | 488 | break; |
28f23441 | 489 | case '\017': /* ^O */ |
3280af22 | 490 | sv_setpv(sv, PL_osname); |
28f23441 | 491 | break; |
79072805 | 492 | case '\020': /* ^P */ |
3280af22 | 493 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 494 | break; |
fb73857a | 495 | case '\023': /* ^S */ |
d58bf5aa MB |
496 | { |
497 | dTHR; | |
3280af22 | 498 | if (PL_lex_state != LEX_NOTPARSING) |
d58bf5aa | 499 | SvOK_off(sv); |
3280af22 | 500 | else if (PL_in_eval) |
d58bf5aa MB |
501 | sv_setiv(sv, 1); |
502 | else | |
503 | sv_setiv(sv, 0); | |
504 | } | |
fb73857a | 505 | break; |
79072805 | 506 | case '\024': /* ^T */ |
88e89b8a | 507 | #ifdef BIG_TIME |
6b88bc9c | 508 | sv_setnv(sv, PL_basetime); |
88e89b8a | 509 | #else |
3280af22 | 510 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 511 | #endif |
79072805 LW |
512 | break; |
513 | case '\027': /* ^W */ | |
0453d815 | 514 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
79072805 LW |
515 | break; |
516 | case '1': case '2': case '3': case '4': | |
517 | case '5': case '6': case '7': case '8': case '9': case '&': | |
3280af22 | 518 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
519 | I32 s1, t1; |
520 | ||
a863c7d1 MB |
521 | /* |
522 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
523 | * XXX Does the new way break anything? | |
524 | */ | |
525 | paren = atoi(mg->mg_ptr); | |
79072805 | 526 | getparen: |
d9f97599 | 527 | if (paren <= rx->nparens && |
cf93c79d IZ |
528 | (s1 = rx->startp[paren]) != -1 && |
529 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 530 | { |
cf93c79d IZ |
531 | i = t1 - s1; |
532 | s = rx->subbeg + s1; | |
13f57bf8 | 533 | getrx: |
748a9306 | 534 | if (i >= 0) { |
13f57bf8 | 535 | bool was_tainted; |
3280af22 NIS |
536 | if (PL_tainting) { |
537 | was_tainted = PL_tainted; | |
538 | PL_tainted = FALSE; | |
13f57bf8 | 539 | } |
cf93c79d | 540 | sv_setpvn(sv, s, i); |
3280af22 NIS |
541 | if (PL_tainting) |
542 | PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx)); | |
748a9306 LW |
543 | break; |
544 | } | |
79072805 | 545 | } |
79072805 | 546 | } |
3280af22 | 547 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
548 | break; |
549 | case '+': | |
3280af22 | 550 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 | 551 | paren = rx->lastparen; |
a0d0e21e LW |
552 | if (paren) |
553 | goto getparen; | |
79072805 | 554 | } |
3280af22 | 555 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
556 | break; |
557 | case '`': | |
3280af22 | 558 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
559 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
560 | i = rx->startp[0]; | |
13f57bf8 | 561 | goto getrx; |
79072805 | 562 | } |
79072805 | 563 | } |
3280af22 | 564 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
565 | break; |
566 | case '\'': | |
3280af22 | 567 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
568 | if (rx->subbeg && rx->endp[0] != -1) { |
569 | s = rx->subbeg + rx->endp[0]; | |
570 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 571 | goto getrx; |
79072805 | 572 | } |
79072805 | 573 | } |
3280af22 | 574 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
575 | break; |
576 | case '.': | |
577 | #ifndef lint | |
3280af22 NIS |
578 | if (GvIO(PL_last_in_gv)) { |
579 | sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv))); | |
79072805 LW |
580 | } |
581 | #endif | |
582 | break; | |
583 | case '?': | |
809a5acc | 584 | { |
809a5acc | 585 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 586 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
587 | LvTARGOFF(sv) = PL_statusvalue; |
588 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 589 | #endif |
809a5acc | 590 | } |
79072805 LW |
591 | break; |
592 | case '^': | |
3280af22 | 593 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
594 | if (s) |
595 | sv_setpv(sv,s); | |
596 | else { | |
3280af22 | 597 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 LW |
598 | sv_catpv(sv,"_TOP"); |
599 | } | |
600 | break; | |
601 | case '~': | |
3280af22 | 602 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 603 | if (!s) |
3280af22 | 604 | s = GvENAME(PL_defoutgv); |
79072805 LW |
605 | sv_setpv(sv,s); |
606 | break; | |
607 | #ifndef lint | |
608 | case '=': | |
3280af22 | 609 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
610 | break; |
611 | case '-': | |
3280af22 | 612 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
613 | break; |
614 | case '%': | |
3280af22 | 615 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 LW |
616 | break; |
617 | #endif | |
618 | case ':': | |
619 | break; | |
620 | case '/': | |
621 | break; | |
622 | case '[': | |
3280af22 | 623 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 LW |
624 | break; |
625 | case '|': | |
3280af22 | 626 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 LW |
627 | break; |
628 | case ',': | |
3280af22 | 629 | sv_setpvn(sv,PL_ofs,PL_ofslen); |
79072805 LW |
630 | break; |
631 | case '\\': | |
3280af22 | 632 | sv_setpvn(sv,PL_ors,PL_orslen); |
79072805 LW |
633 | break; |
634 | case '#': | |
3280af22 | 635 | sv_setpv(sv,PL_ofmt); |
79072805 LW |
636 | break; |
637 | case '!': | |
a5f75d66 | 638 | #ifdef VMS |
65202027 | 639 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 640 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 641 | #else |
88e89b8a | 642 | { |
643 | int saveerrno = errno; | |
65202027 | 644 | sv_setnv(sv, (NV)errno); |
88e89b8a | 645 | #ifdef OS2 |
646 | if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc)); | |
647 | else | |
a5f75d66 | 648 | #endif |
2304df62 | 649 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 650 | errno = saveerrno; |
651 | } | |
652 | #endif | |
946ec16e | 653 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
654 | break; |
655 | case '<': | |
3280af22 | 656 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
657 | break; |
658 | case '>': | |
3280af22 | 659 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
660 | break; |
661 | case '(': | |
3280af22 | 662 | sv_setiv(sv, (IV)PL_gid); |
cea2e8a9 | 663 | Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_gid); |
79072805 LW |
664 | goto add_groups; |
665 | case ')': | |
3280af22 | 666 | sv_setiv(sv, (IV)PL_egid); |
cea2e8a9 | 667 | Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_egid); |
79072805 | 668 | add_groups: |
79072805 | 669 | #ifdef HAS_GETGROUPS |
79072805 | 670 | { |
a0d0e21e | 671 | Groups_t gary[NGROUPS]; |
79072805 | 672 | i = getgroups(NGROUPS,gary); |
46fc3d4c | 673 | while (--i >= 0) |
cea2e8a9 | 674 | Perl_sv_catpvf(aTHX_ sv, " %Vd", (IV)gary[i]); |
79072805 LW |
675 | } |
676 | #endif | |
29355cf7 | 677 | SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
678 | break; |
679 | case '*': | |
680 | break; | |
681 | case '0': | |
682 | break; | |
a863c7d1 MB |
683 | #ifdef USE_THREADS |
684 | case '@': | |
38a03e6e | 685 | sv_setsv(sv, thr->errsv); |
a863c7d1 MB |
686 | break; |
687 | #endif /* USE_THREADS */ | |
79072805 | 688 | } |
a0d0e21e | 689 | return 0; |
79072805 LW |
690 | } |
691 | ||
692 | int | |
864dbfa3 | 693 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
694 | { |
695 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
696 | ||
697 | if (uf && uf->uf_val) | |
698 | (*uf->uf_val)(uf->uf_index, sv); | |
699 | return 0; | |
700 | } | |
701 | ||
702 | int | |
864dbfa3 | 703 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
704 | { |
705 | register char *s; | |
88e89b8a | 706 | char *ptr; |
5aabfad6 | 707 | STRLEN len, klen; |
a0d0e21e | 708 | I32 i; |
1e422769 | 709 | |
a0d0e21e | 710 | s = SvPV(sv,len); |
5aabfad6 | 711 | ptr = MgPV(mg,klen); |
88e89b8a | 712 | my_setenv(ptr, s); |
1e422769 | 713 | |
a0d0e21e LW |
714 | #ifdef DYNAMIC_ENV_FETCH |
715 | /* We just undefd an environment var. Is a replacement */ | |
716 | /* waiting in the wings? */ | |
717 | if (!len) { | |
5aabfad6 | 718 | SV **valp; |
6b88bc9c | 719 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 | 720 | s = SvPV(*valp, len); |
a0d0e21e LW |
721 | } |
722 | #endif | |
1e422769 | 723 | |
39e571d4 | 724 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
725 | /* And you'll never guess what the dog had */ |
726 | /* in its mouth... */ | |
3280af22 | 727 | if (PL_tainting) { |
1e422769 | 728 | MgTAINTEDDIR_off(mg); |
729 | #ifdef VMS | |
5aabfad6 | 730 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 | 731 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
732 | struct stat sbuf; | |
733 | int i = 0, j = 0; | |
734 | ||
735 | do { /* DCL$PATH may be a search list */ | |
736 | while (1) { /* as may dev portion of any element */ | |
737 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
738 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
739 | cando_by_name(S_IWUSR,0,elt) ) { | |
740 | MgTAINTEDDIR_on(mg); | |
741 | return 0; | |
742 | } | |
743 | } | |
744 | if ((cp = strchr(elt, ':')) != Nullch) | |
745 | *cp = '\0'; | |
746 | if (my_trnlnm(elt, eltbuf, j++)) | |
747 | elt = eltbuf; | |
748 | else | |
749 | break; | |
750 | } | |
751 | j = 0; | |
752 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
753 | } | |
754 | #endif /* VMS */ | |
5aabfad6 | 755 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e | 756 | char *strend = s + len; |
463ee0b2 LW |
757 | |
758 | while (s < strend) { | |
96827780 | 759 | char tmpbuf[256]; |
1e422769 | 760 | struct stat st; |
96827780 | 761 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e | 762 | s, strend, ':', &i); |
463ee0b2 | 763 | s++; |
96827780 MB |
764 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
765 | || *tmpbuf != '/' | |
c6ed36e1 | 766 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 767 | MgTAINTEDDIR_on(mg); |
1e422769 | 768 | return 0; |
769 | } | |
463ee0b2 | 770 | } |
79072805 LW |
771 | } |
772 | } | |
39e571d4 | 773 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 774 | |
79072805 LW |
775 | return 0; |
776 | } | |
777 | ||
778 | int | |
864dbfa3 | 779 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 780 | { |
2d8e6c8d GS |
781 | STRLEN n_a; |
782 | my_setenv(MgPV(mg,n_a),Nullch); | |
85e6fe83 LW |
783 | return 0; |
784 | } | |
785 | ||
88e89b8a | 786 | int |
864dbfa3 | 787 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 788 | { |
789 | #if defined(VMS) | |
cea2e8a9 | 790 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 791 | #else |
d58bf5aa | 792 | dTHR; |
3280af22 | 793 | if (PL_localizing) { |
fb73857a | 794 | HE* entry; |
2d8e6c8d | 795 | STRLEN n_a; |
fb73857a | 796 | magic_clear_all_env(sv,mg); |
797 | hv_iterinit((HV*)sv); | |
798 | while (entry = hv_iternext((HV*)sv)) { | |
799 | I32 keylen; | |
800 | my_setenv(hv_iterkey(entry, &keylen), | |
2d8e6c8d | 801 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a | 802 | } |
803 | } | |
804 | #endif | |
805 | return 0; | |
806 | } | |
807 | ||
808 | int | |
864dbfa3 | 809 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 810 | { |
3e3baf6d | 811 | #if defined(VMS) |
cea2e8a9 | 812 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d | 813 | #else |
f2517201 | 814 | # ifdef WIN32 |
3e3baf6d TB |
815 | char *envv = GetEnvironmentStrings(); |
816 | char *cur = envv; | |
817 | STRLEN len; | |
818 | while (*cur) { | |
819 | char *end = strchr(cur,'='); | |
820 | if (end && end != cur) { | |
821 | *end = '\0'; | |
822 | my_setenv(cur,Nullch); | |
823 | *end = '='; | |
ac5c734f | 824 | cur = end + strlen(end+1)+2; |
3e3baf6d TB |
825 | } |
826 | else if ((len = strlen(cur))) | |
827 | cur += len+1; | |
828 | } | |
829 | FreeEnvironmentStrings(envv); | |
f2517201 GS |
830 | # else |
831 | # ifndef PERL_USE_SAFE_PUTENV | |
66b1d557 HM |
832 | I32 i; |
833 | ||
3280af22 | 834 | if (environ == PL_origenviron) |
f2517201 | 835 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 HM |
836 | else |
837 | for (i = 0; environ[i]; i++) | |
f2517201 GS |
838 | safesysfree(environ[i]); |
839 | # endif /* PERL_USE_SAFE_PUTENV */ | |
840 | ||
66b1d557 HM |
841 | environ[0] = Nullch; |
842 | ||
f2517201 GS |
843 | # endif /* WIN32 */ |
844 | #endif /* VMS */ | |
3e3baf6d | 845 | return 0; |
66b1d557 HM |
846 | } |
847 | ||
848 | int | |
864dbfa3 | 849 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 850 | { |
851 | I32 i; | |
2d8e6c8d | 852 | STRLEN n_a; |
88e89b8a | 853 | /* Are we fetching a signal entry? */ |
2d8e6c8d | 854 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a | 855 | if (i) { |
22c35a8c GS |
856 | if(PL_psig_ptr[i]) |
857 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 858 | else { |
ff68c719 | 859 | Sighandler_t sigstate = rsignal_state(i); |
860 | ||
88e89b8a | 861 | /* cache state so we don't fetch it again */ |
ff68c719 | 862 | if(sigstate == SIG_IGN) |
88e89b8a | 863 | sv_setpv(sv,"IGNORE"); |
864 | else | |
3280af22 | 865 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c | 866 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 867 | SvTEMP_off(sv); |
868 | } | |
869 | } | |
870 | return 0; | |
871 | } | |
872 | int | |
864dbfa3 | 873 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 874 | { |
875 | I32 i; | |
2d8e6c8d | 876 | STRLEN n_a; |
88e89b8a | 877 | /* Are we clearing a signal entry? */ |
2d8e6c8d | 878 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a | 879 | if (i) { |
22c35a8c GS |
880 | if(PL_psig_ptr[i]) { |
881 | SvREFCNT_dec(PL_psig_ptr[i]); | |
882 | PL_psig_ptr[i]=0; | |
88e89b8a | 883 | } |
22c35a8c GS |
884 | if(PL_psig_name[i]) { |
885 | SvREFCNT_dec(PL_psig_name[i]); | |
886 | PL_psig_name[i]=0; | |
88e89b8a | 887 | } |
888 | } | |
889 | return 0; | |
890 | } | |
3d37d572 | 891 | |
85e6fe83 | 892 | int |
864dbfa3 | 893 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 894 | { |
11343788 | 895 | dTHR; |
79072805 LW |
896 | register char *s; |
897 | I32 i; | |
748a9306 | 898 | SV** svp; |
e72dc28c | 899 | STRLEN len; |
a0d0e21e | 900 | |
e72dc28c | 901 | s = MgPV(mg,len); |
748a9306 LW |
902 | if (*s == '_') { |
903 | if (strEQ(s,"__DIE__")) | |
3280af22 | 904 | svp = &PL_diehook; |
748a9306 | 905 | else if (strEQ(s,"__WARN__")) |
3280af22 | 906 | svp = &PL_warnhook; |
748a9306 | 907 | else if (strEQ(s,"__PARSE__")) |
3280af22 | 908 | svp = &PL_parsehook; |
748a9306 | 909 | else |
cea2e8a9 | 910 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 911 | i = 0; |
4633a7c4 LW |
912 | if (*svp) { |
913 | SvREFCNT_dec(*svp); | |
914 | *svp = 0; | |
915 | } | |
748a9306 LW |
916 | } |
917 | else { | |
918 | i = whichsig(s); /* ...no, a brick */ | |
919 | if (!i) { | |
599cee73 | 920 | if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM")) |
cea2e8a9 | 921 | Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s); |
748a9306 LW |
922 | return 0; |
923 | } | |
22c35a8c GS |
924 | SvREFCNT_dec(PL_psig_name[i]); |
925 | SvREFCNT_dec(PL_psig_ptr[i]); | |
926 | PL_psig_ptr[i] = SvREFCNT_inc(sv); | |
88e89b8a | 927 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 928 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 929 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 930 | } |
a0d0e21e | 931 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 | 932 | if (i) |
3280af22 | 933 | (void)rsignal(i, PL_sighandlerp); |
748a9306 LW |
934 | else |
935 | *svp = SvREFCNT_inc(sv); | |
a0d0e21e LW |
936 | return 0; |
937 | } | |
e72dc28c | 938 | s = SvPV_force(sv,len); |
748a9306 LW |
939 | if (strEQ(s,"IGNORE")) { |
940 | if (i) | |
ff68c719 | 941 | (void)rsignal(i, SIG_IGN); |
748a9306 LW |
942 | else |
943 | *svp = 0; | |
944 | } | |
945 | else if (strEQ(s,"DEFAULT") || !*s) { | |
946 | if (i) | |
ff68c719 | 947 | (void)rsignal(i, SIG_DFL); |
748a9306 LW |
948 | else |
949 | *svp = 0; | |
950 | } | |
79072805 | 951 | else { |
5aabfad6 | 952 | /* |
953 | * We should warn if HINT_STRICT_REFS, but without | |
954 | * access to a known hint bit in a known OP, we can't | |
955 | * tell whether HINT_STRICT_REFS is in force or not. | |
956 | */ | |
46fc3d4c | 957 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c | 958 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 | 959 | if (i) |
3280af22 | 960 | (void)rsignal(i, PL_sighandlerp); |
748a9306 LW |
961 | else |
962 | *svp = SvREFCNT_inc(sv); | |
79072805 LW |
963 | } |
964 | return 0; | |
965 | } | |
966 | ||
967 | int | |
864dbfa3 | 968 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 969 | { |
3280af22 | 970 | PL_sub_generation++; |
463ee0b2 LW |
971 | return 0; |
972 | } | |
973 | ||
974 | int | |
864dbfa3 | 975 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 976 | { |
a0d0e21e | 977 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 978 | PL_amagic_generation++; |
463ee0b2 | 979 | |
a0d0e21e LW |
980 | return 0; |
981 | } | |
463ee0b2 | 982 | |
946ec16e | 983 | int |
864dbfa3 | 984 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
985 | { |
986 | HV *hv = (HV*)LvTARG(sv); | |
987 | HE *entry; | |
988 | I32 i = 0; | |
989 | ||
990 | if (hv) { | |
991 | (void) hv_iterinit(hv); | |
33c27489 | 992 | if (! SvTIED_mg((SV*)hv, 'P')) |
6ff81951 GS |
993 | i = HvKEYS(hv); |
994 | else { | |
995 | /*SUPPRESS 560*/ | |
996 | while (entry = hv_iternext(hv)) { | |
997 | i++; | |
998 | } | |
999 | } | |
1000 | } | |
1001 | ||
1002 | sv_setiv(sv, (IV)i); | |
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | int | |
864dbfa3 | 1007 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1008 | { |
1009 | if (LvTARG(sv)) { | |
1010 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1011 | } |
1012 | return 0; | |
93965878 | 1013 | } |
946ec16e | 1014 | |
e336de0d | 1015 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1016 | STATIC int |
cea2e8a9 | 1017 | S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
a0d0e21e LW |
1018 | { |
1019 | dSP; | |
463ee0b2 | 1020 | |
924508f0 GS |
1021 | PUSHMARK(SP); |
1022 | EXTEND(SP, n); | |
33c27489 | 1023 | PUSHs(SvTIED_obj(sv, mg)); |
93965878 NIS |
1024 | if (n > 1) { |
1025 | if (mg->mg_ptr) { | |
565764a8 | 1026 | if (mg->mg_len >= 0) |
79cb57f6 | 1027 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1028 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1029 | PUSHs((SV*)mg->mg_ptr); |
1030 | } | |
1031 | else if (mg->mg_type == 'p') { | |
565764a8 | 1032 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1033 | } |
1034 | } | |
1035 | if (n > 2) { | |
1036 | PUSHs(val); | |
88e89b8a | 1037 | } |
463ee0b2 LW |
1038 | PUTBACK; |
1039 | ||
864dbfa3 | 1040 | return call_method(meth, flags); |
946ec16e | 1041 | } |
1042 | ||
76e3520e | 1043 | STATIC int |
cea2e8a9 | 1044 | S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth) |
a0d0e21e LW |
1045 | { |
1046 | dSP; | |
463ee0b2 | 1047 | |
a0d0e21e LW |
1048 | ENTER; |
1049 | SAVETMPS; | |
e788e7d3 | 1050 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1051 | |
33c27489 | 1052 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1053 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1054 | } |
463ee0b2 | 1055 | |
d3acc0f7 | 1056 | POPSTACK; |
a0d0e21e LW |
1057 | FREETMPS; |
1058 | LEAVE; | |
1059 | return 0; | |
1060 | } | |
463ee0b2 | 1061 | |
a0d0e21e | 1062 | int |
864dbfa3 | 1063 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1064 | { |
1065 | magic_methpack(sv,mg,"FETCH"); | |
1066 | if (mg->mg_ptr) | |
1067 | mg->mg_flags |= MGf_GSKIP; | |
463ee0b2 LW |
1068 | return 0; |
1069 | } | |
1070 | ||
1071 | int | |
864dbfa3 | 1072 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d GS |
1073 | { |
1074 | dSP; | |
a60c0954 | 1075 | ENTER; |
e788e7d3 | 1076 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1077 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1078 | POPSTACK; |
a60c0954 | 1079 | LEAVE; |
463ee0b2 LW |
1080 | return 0; |
1081 | } | |
1082 | ||
1083 | int | |
864dbfa3 | 1084 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1085 | { |
a0d0e21e LW |
1086 | return magic_methpack(sv,mg,"DELETE"); |
1087 | } | |
463ee0b2 | 1088 | |
93965878 NIS |
1089 | |
1090 | U32 | |
864dbfa3 | 1091 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
93965878 | 1092 | { |
e336de0d | 1093 | dSP; |
93965878 NIS |
1094 | U32 retval = 0; |
1095 | ||
1096 | ENTER; | |
1097 | SAVETMPS; | |
e788e7d3 | 1098 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1099 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1100 | sv = *PL_stack_sp--; |
a60c0954 | 1101 | retval = (U32) SvIV(sv)-1; |
93965878 | 1102 | } |
d3acc0f7 | 1103 | POPSTACK; |
93965878 NIS |
1104 | FREETMPS; |
1105 | LEAVE; | |
1106 | return retval; | |
1107 | } | |
1108 | ||
cea2e8a9 GS |
1109 | int |
1110 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e LW |
1111 | { |
1112 | dSP; | |
463ee0b2 | 1113 | |
e336de0d | 1114 | ENTER; |
e788e7d3 | 1115 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1116 | PUSHMARK(SP); |
33c27489 | 1117 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1118 | PUTBACK; |
864dbfa3 | 1119 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1120 | POPSTACK; |
a60c0954 | 1121 | LEAVE; |
463ee0b2 LW |
1122 | return 0; |
1123 | } | |
1124 | ||
1125 | int | |
864dbfa3 | 1126 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1127 | { |
463ee0b2 | 1128 | dSP; |
a0d0e21e | 1129 | char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1130 | |
1131 | ENTER; | |
a0d0e21e | 1132 | SAVETMPS; |
e788e7d3 | 1133 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1134 | PUSHMARK(SP); |
1135 | EXTEND(SP, 2); | |
33c27489 | 1136 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1137 | if (SvOK(key)) |
1138 | PUSHs(key); | |
1139 | PUTBACK; | |
1140 | ||
864dbfa3 | 1141 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1142 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1143 | |
d3acc0f7 | 1144 | POPSTACK; |
a0d0e21e LW |
1145 | FREETMPS; |
1146 | LEAVE; | |
79072805 LW |
1147 | return 0; |
1148 | } | |
1149 | ||
1150 | int | |
864dbfa3 | 1151 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1152 | { |
1153 | return magic_methpack(sv,mg,"EXISTS"); | |
1154 | } | |
1155 | ||
1156 | int | |
864dbfa3 | 1157 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1158 | { |
11343788 | 1159 | dTHR; |
79072805 LW |
1160 | OP *o; |
1161 | I32 i; | |
1162 | GV* gv; | |
1163 | SV** svp; | |
2d8e6c8d | 1164 | STRLEN n_a; |
79072805 | 1165 | |
3280af22 | 1166 | gv = PL_DBline; |
79072805 | 1167 | i = SvTRUE(sv); |
188ea221 | 1168 | svp = av_fetch(GvAV(gv), |
2d8e6c8d | 1169 | atoi(MgPV(mg,n_a)), FALSE); |
8990e307 | 1170 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
93a17b20 | 1171 | o->op_private = i; |
0453d815 PM |
1172 | else if (ckWARN_d(WARN_INTERNAL)) |
1173 | Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n"); | |
79072805 LW |
1174 | return 0; |
1175 | } | |
1176 | ||
1177 | int | |
864dbfa3 | 1178 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1179 | { |
0f15f207 | 1180 | dTHR; |
3280af22 | 1181 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 LW |
1182 | return 0; |
1183 | } | |
1184 | ||
1185 | int | |
864dbfa3 | 1186 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1187 | { |
0f15f207 | 1188 | dTHR; |
3280af22 | 1189 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e LW |
1190 | return 0; |
1191 | } | |
1192 | ||
1193 | int | |
864dbfa3 | 1194 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1195 | { |
1196 | SV* lsv = LvTARG(sv); | |
1197 | ||
1198 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { | |
1199 | mg = mg_find(lsv, 'g'); | |
565764a8 | 1200 | if (mg && mg->mg_len >= 0) { |
0f15f207 | 1201 | dTHR; |
a0ed51b3 LW |
1202 | I32 i = mg->mg_len; |
1203 | if (IN_UTF8) | |
1204 | sv_pos_b2u(lsv, &i); | |
1205 | sv_setiv(sv, i + PL_curcop->cop_arybase); | |
a0d0e21e LW |
1206 | return 0; |
1207 | } | |
1208 | } | |
1209 | (void)SvOK_off(sv); | |
1210 | return 0; | |
1211 | } | |
1212 | ||
1213 | int | |
864dbfa3 | 1214 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1215 | { |
1216 | SV* lsv = LvTARG(sv); | |
1217 | SSize_t pos; | |
1218 | STRLEN len; | |
a0ed51b3 | 1219 | STRLEN ulen; |
c485e607 | 1220 | dTHR; |
a0d0e21e LW |
1221 | |
1222 | mg = 0; | |
1223 | ||
1224 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) | |
1225 | mg = mg_find(lsv, 'g'); | |
1226 | if (!mg) { | |
1227 | if (!SvOK(sv)) | |
1228 | return 0; | |
1229 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); | |
1230 | mg = mg_find(lsv, 'g'); | |
1231 | } | |
1232 | else if (!SvOK(sv)) { | |
565764a8 | 1233 | mg->mg_len = -1; |
a0d0e21e LW |
1234 | return 0; |
1235 | } | |
1236 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1237 | ||
c485e607 | 1238 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 LW |
1239 | |
1240 | if (IN_UTF8) { | |
1241 | ulen = sv_len_utf8(lsv); | |
1242 | if (ulen) | |
1243 | len = ulen; | |
1244 | else | |
1245 | ulen = 0; | |
1246 | } | |
1247 | ||
a0d0e21e LW |
1248 | if (pos < 0) { |
1249 | pos += len; | |
1250 | if (pos < 0) | |
1251 | pos = 0; | |
1252 | } | |
1253 | else if (pos > len) | |
1254 | pos = len; | |
a0ed51b3 LW |
1255 | |
1256 | if (ulen) { | |
1257 | I32 p = pos; | |
1258 | sv_pos_u2b(lsv, &p, 0); | |
1259 | pos = p; | |
1260 | } | |
1261 | ||
565764a8 | 1262 | mg->mg_len = pos; |
71be2cbc | 1263 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e | 1264 | |
79072805 LW |
1265 | return 0; |
1266 | } | |
1267 | ||
1268 | int | |
864dbfa3 | 1269 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1270 | { |
8646b087 | 1271 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1272 | SvFAKE_off(sv); | |
946ec16e | 1273 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 | 1274 | SvFAKE_on(sv); |
1275 | } | |
1276 | else | |
946ec16e | 1277 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 LW |
1278 | return 0; |
1279 | } | |
1280 | ||
1281 | int | |
864dbfa3 | 1282 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1283 | { |
1284 | register char *s; | |
1285 | GV* gv; | |
2d8e6c8d | 1286 | STRLEN n_a; |
79072805 LW |
1287 | |
1288 | if (!SvOK(sv)) | |
1289 | return 0; | |
2d8e6c8d | 1290 | s = SvPV(sv, n_a); |
79072805 LW |
1291 | if (*s == '*' && s[1]) |
1292 | s++; | |
85e6fe83 | 1293 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
1294 | if (sv == (SV*)gv) |
1295 | return 0; | |
1296 | if (GvGP(sv)) | |
88e89b8a | 1297 | gp_free((GV*)sv); |
79072805 | 1298 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1299 | return 0; |
1300 | } | |
1301 | ||
1302 | int | |
864dbfa3 | 1303 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1304 | { |
1305 | STRLEN len; | |
1306 | SV *lsv = LvTARG(sv); | |
1307 | char *tmps = SvPV(lsv,len); | |
1308 | I32 offs = LvTARGOFF(sv); | |
1309 | I32 rem = LvTARGLEN(sv); | |
1310 | ||
1311 | if (offs > len) | |
1312 | offs = len; | |
1313 | if (rem + offs > len) | |
1314 | rem = len - offs; | |
1315 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
1316 | return 0; | |
1317 | } | |
1318 | ||
1319 | int | |
864dbfa3 | 1320 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1321 | { |
8990e307 LW |
1322 | STRLEN len; |
1323 | char *tmps = SvPV(sv,len); | |
1324 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); | |
79072805 LW |
1325 | return 0; |
1326 | } | |
1327 | ||
1328 | int | |
864dbfa3 | 1329 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1330 | { |
a863c7d1 | 1331 | dTHR; |
565764a8 DL |
1332 | TAINT_IF((mg->mg_len & 1) || |
1333 | (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */ | |
463ee0b2 LW |
1334 | return 0; |
1335 | } | |
1336 | ||
1337 | int | |
864dbfa3 | 1338 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1339 | { |
11343788 | 1340 | dTHR; |
3280af22 NIS |
1341 | if (PL_localizing) { |
1342 | if (PL_localizing == 1) | |
565764a8 | 1343 | mg->mg_len <<= 1; |
748a9306 | 1344 | else |
565764a8 | 1345 | mg->mg_len >>= 1; |
a0d0e21e | 1346 | } |
3280af22 | 1347 | else if (PL_tainted) |
565764a8 | 1348 | mg->mg_len |= 1; |
748a9306 | 1349 | else |
565764a8 | 1350 | mg->mg_len &= ~1; |
463ee0b2 LW |
1351 | return 0; |
1352 | } | |
1353 | ||
1354 | int | |
864dbfa3 | 1355 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1356 | { |
1357 | SV *lsv = LvTARG(sv); | |
1358 | unsigned char *s; | |
1359 | unsigned long retnum; | |
1360 | STRLEN lsvlen; | |
1361 | I32 len; | |
1362 | I32 offset; | |
1363 | I32 size; | |
1364 | ||
1365 | if (!lsv) { | |
1366 | SvOK_off(sv); | |
1367 | return 0; | |
1368 | } | |
1369 | s = (unsigned char *) SvPV(lsv, lsvlen); | |
1370 | offset = LvTARGOFF(sv); | |
1371 | size = LvTARGLEN(sv); | |
1372 | len = (offset + size + 7) / 8; | |
1373 | ||
1374 | /* Copied from pp_vec() */ | |
1375 | ||
1376 | if (len > lsvlen) { | |
1377 | if (size <= 8) | |
1378 | retnum = 0; | |
1379 | else { | |
1380 | offset >>= 3; | |
1381 | if (size == 16) { | |
1382 | if (offset >= lsvlen) | |
1383 | retnum = 0; | |
1384 | else | |
1385 | retnum = (unsigned long) s[offset] << 8; | |
1386 | } | |
1387 | else if (size == 32) { | |
1388 | if (offset >= lsvlen) | |
1389 | retnum = 0; | |
1390 | else if (offset + 1 >= lsvlen) | |
1391 | retnum = (unsigned long) s[offset] << 24; | |
1392 | else if (offset + 2 >= lsvlen) | |
1393 | retnum = ((unsigned long) s[offset] << 24) + | |
1394 | ((unsigned long) s[offset + 1] << 16); | |
1395 | else | |
1396 | retnum = ((unsigned long) s[offset] << 24) + | |
1397 | ((unsigned long) s[offset + 1] << 16) + | |
1398 | (s[offset + 2] << 8); | |
1399 | } | |
1400 | } | |
1401 | } | |
1402 | else if (size < 8) | |
1403 | retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1); | |
1404 | else { | |
1405 | offset >>= 3; | |
1406 | if (size == 8) | |
1407 | retnum = s[offset]; | |
1408 | else if (size == 16) | |
1409 | retnum = ((unsigned long) s[offset] << 8) + s[offset+1]; | |
1410 | else if (size == 32) | |
1411 | retnum = ((unsigned long) s[offset] << 24) + | |
1412 | ((unsigned long) s[offset + 1] << 16) + | |
1413 | (s[offset + 2] << 8) + s[offset+3]; | |
1414 | } | |
1415 | ||
1416 | sv_setuv(sv, (UV)retnum); | |
1417 | return 0; | |
1418 | } | |
1419 | ||
1420 | int | |
864dbfa3 | 1421 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1422 | { |
1423 | do_vecset(sv); /* XXX slurp this routine */ | |
1424 | return 0; | |
1425 | } | |
1426 | ||
1427 | int | |
864dbfa3 | 1428 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 1429 | { |
71be2cbc | 1430 | SV *targ = Nullsv; |
5f05dabc | 1431 | if (LvTARGLEN(sv)) { |
68dc0745 | 1432 | if (mg->mg_obj) { |
74e13ce4 GS |
1433 | SV *ahv = LvTARG(sv); |
1434 | if (SvTYPE(ahv) == SVt_PVHV) { | |
1435 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); | |
1436 | if (he) | |
1437 | targ = HeVAL(he); | |
1438 | } | |
1439 | else { | |
1440 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0); | |
1441 | if (svp) | |
1442 | targ = *svp; | |
1443 | } | |
68dc0745 | 1444 | } |
1445 | else { | |
3c78fafa | 1446 | AV* av = (AV*)LvTARG(sv); |
68dc0745 | 1447 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1448 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
1449 | } | |
3280af22 | 1450 | if (targ && targ != &PL_sv_undef) { |
e858de61 | 1451 | dTHR; /* just for SvREFCNT_dec */ |
68dc0745 | 1452 | /* somebody else defined it for us */ |
1453 | SvREFCNT_dec(LvTARG(sv)); | |
1454 | LvTARG(sv) = SvREFCNT_inc(targ); | |
1455 | LvTARGLEN(sv) = 0; | |
1456 | SvREFCNT_dec(mg->mg_obj); | |
1457 | mg->mg_obj = Nullsv; | |
1458 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
1459 | } | |
5f05dabc | 1460 | } |
71be2cbc | 1461 | else |
1462 | targ = LvTARG(sv); | |
3280af22 | 1463 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 1464 | return 0; |
1465 | } | |
1466 | ||
1467 | int | |
864dbfa3 | 1468 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 1469 | { |
1470 | if (LvTARGLEN(sv)) | |
68dc0745 | 1471 | vivify_defelem(sv); |
1472 | if (LvTARG(sv)) { | |
5f05dabc | 1473 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 1474 | SvSETMAGIC(LvTARG(sv)); |
1475 | } | |
5f05dabc | 1476 | return 0; |
1477 | } | |
1478 | ||
71be2cbc | 1479 | void |
864dbfa3 | 1480 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 1481 | { |
e858de61 | 1482 | dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/ |
74e13ce4 GS |
1483 | MAGIC *mg; |
1484 | SV *value = Nullsv; | |
71be2cbc | 1485 | |
68dc0745 | 1486 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y'))) |
71be2cbc | 1487 | return; |
68dc0745 | 1488 | if (mg->mg_obj) { |
74e13ce4 | 1489 | SV *ahv = LvTARG(sv); |
2d8e6c8d | 1490 | STRLEN n_a; |
74e13ce4 | 1491 | if (SvTYPE(ahv) == SVt_PVHV) { |
af7f9c15 | 1492 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 GS |
1493 | if (he) |
1494 | value = HeVAL(he); | |
1495 | } | |
1496 | else { | |
af7f9c15 | 1497 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 GS |
1498 | if (svp) |
1499 | value = *svp; | |
1500 | } | |
3280af22 | 1501 | if (!value || value == &PL_sv_undef) |
cea2e8a9 | 1502 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc | 1503 | } |
68dc0745 | 1504 | else { |
1505 | AV* av = (AV*)LvTARG(sv); | |
5aabfad6 | 1506 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 | 1507 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1508 | else { | |
1509 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); | |
3280af22 | 1510 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 1511 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 1512 | } |
1513 | } | |
3e3baf6d | 1514 | (void)SvREFCNT_inc(value); |
68dc0745 | 1515 | SvREFCNT_dec(LvTARG(sv)); |
1516 | LvTARG(sv) = value; | |
71be2cbc | 1517 | LvTARGLEN(sv) = 0; |
68dc0745 | 1518 | SvREFCNT_dec(mg->mg_obj); |
1519 | mg->mg_obj = Nullsv; | |
1520 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
5f05dabc | 1521 | } |
1522 | ||
1523 | int | |
864dbfa3 | 1524 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 GS |
1525 | { |
1526 | AV *av = (AV*)mg->mg_obj; | |
1527 | SV **svp = AvARRAY(av); | |
1528 | I32 i = AvFILLp(av); | |
1529 | while (i >= 0) { | |
1530 | if (svp[i] && svp[i] != &PL_sv_undef) { | |
1531 | if (!SvWEAKREF(svp[i])) | |
cea2e8a9 | 1532 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 GS |
1533 | /* XXX Should we check that it hasn't changed? */ |
1534 | SvRV(svp[i]) = 0; | |
1535 | SvOK_off(svp[i]); | |
1536 | SvWEAKREF_off(svp[i]); | |
1537 | svp[i] = &PL_sv_undef; | |
1538 | } | |
1539 | i--; | |
1540 | } | |
1541 | return 0; | |
1542 | } | |
1543 | ||
1544 | int | |
864dbfa3 | 1545 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 1546 | { |
565764a8 | 1547 | mg->mg_len = -1; |
c6496cc7 | 1548 | SvSCREAM_off(sv); |
93a17b20 LW |
1549 | return 0; |
1550 | } | |
1551 | ||
1552 | int | |
864dbfa3 | 1553 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1554 | { |
463ee0b2 | 1555 | sv_unmagic(sv, 'B'); |
79072805 LW |
1556 | SvVALID_off(sv); |
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | int | |
864dbfa3 | 1561 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 1562 | { |
1563 | sv_unmagic(sv, 'f'); | |
1564 | SvCOMPILED_off(sv); | |
1565 | return 0; | |
1566 | } | |
1567 | ||
1568 | int | |
864dbfa3 | 1569 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1570 | { |
1571 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
1572 | ||
1573 | if (uf && uf->uf_set) | |
1574 | (*uf->uf_set)(uf->uf_index, sv); | |
1575 | return 0; | |
1576 | } | |
1577 | ||
c277df42 | 1578 | int |
864dbfa3 | 1579 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 IZ |
1580 | { |
1581 | regexp *re = (regexp *)mg->mg_obj; | |
1582 | ReREFCNT_dec(re); | |
1583 | return 0; | |
1584 | } | |
1585 | ||
7a4c00b4 | 1586 | #ifdef USE_LOCALE_COLLATE |
79072805 | 1587 | int |
864dbfa3 | 1588 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 1589 | { |
1590 | /* | |
838b5b74 | 1591 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 1592 | * and vanished with a faint plop. |
1593 | */ | |
7a4c00b4 | 1594 | if (mg->mg_ptr) { |
1595 | Safefree(mg->mg_ptr); | |
1596 | mg->mg_ptr = NULL; | |
565764a8 | 1597 | mg->mg_len = -1; |
7a4c00b4 | 1598 | } |
bbce6d69 | 1599 | return 0; |
1600 | } | |
7a4c00b4 | 1601 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 1602 | |
1603 | int | |
864dbfa3 | 1604 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1605 | { |
11343788 | 1606 | dTHR; |
79072805 LW |
1607 | register char *s; |
1608 | I32 i; | |
8990e307 | 1609 | STRLEN len; |
79072805 | 1610 | switch (*mg->mg_ptr) { |
748a9306 | 1611 | case '\001': /* ^A */ |
3280af22 | 1612 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 1613 | break; |
599cee73 PM |
1614 | case '\002': /* ^B */ |
1615 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
0453d815 | 1616 | if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) { |
e24b16f9 | 1617 | PL_compiling.cop_warnings = WARN_ALL; |
0453d815 PM |
1618 | PL_dowarn |= G_WARN_ONCE ; |
1619 | } | |
599cee73 | 1620 | else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize)) |
e24b16f9 | 1621 | PL_compiling.cop_warnings = WARN_NONE; |
599cee73 | 1622 | else { |
0453d815 | 1623 | if (specialWARN(PL_compiling.cop_warnings)) |
e24b16f9 | 1624 | PL_compiling.cop_warnings = newSVsv(sv) ; |
0453d815 PM |
1625 | else |
1626 | sv_setsv(PL_compiling.cop_warnings, sv); | |
1627 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) | |
1628 | PL_dowarn |= G_WARN_ONCE ; | |
599cee73 PM |
1629 | } |
1630 | } | |
1631 | break; | |
49460fe6 NIS |
1632 | |
1633 | case '\003': /* ^C */ | |
1634 | PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1635 | break; | |
1636 | ||
79072805 | 1637 | case '\004': /* ^D */ |
3280af22 | 1638 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 LW |
1639 | DEBUG_x(dump_all()); |
1640 | break; | |
28f23441 | 1641 | case '\005': /* ^E */ |
1642 | #ifdef VMS | |
1643 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
1644 | #else | |
048c1ddf | 1645 | # ifdef WIN32 |
22fae026 | 1646 | SetLastError( SvIV(sv) ); |
048c1ddf IZ |
1647 | # else |
1648 | # ifndef OS2 | |
f86702cc | 1649 | /* will anyone ever use this? */ |
1650 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); | |
048c1ddf IZ |
1651 | # endif |
1652 | # endif | |
22fae026 | 1653 | #endif |
28f23441 | 1654 | break; |
79072805 | 1655 | case '\006': /* ^F */ |
3280af22 | 1656 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 1657 | break; |
a0d0e21e | 1658 | case '\010': /* ^H */ |
3280af22 | 1659 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e | 1660 | break; |
9d116dd7 | 1661 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
1662 | if (PL_inplace) |
1663 | Safefree(PL_inplace); | |
79072805 | 1664 | if (SvOK(sv)) |
2d8e6c8d | 1665 | PL_inplace = savepv(SvPV(sv,len)); |
79072805 | 1666 | else |
3280af22 | 1667 | PL_inplace = Nullch; |
79072805 | 1668 | break; |
28f23441 | 1669 | case '\017': /* ^O */ |
3280af22 NIS |
1670 | if (PL_osname) |
1671 | Safefree(PL_osname); | |
28f23441 | 1672 | if (SvOK(sv)) |
2d8e6c8d | 1673 | PL_osname = savepv(SvPV(sv,len)); |
28f23441 | 1674 | else |
3280af22 | 1675 | PL_osname = Nullch; |
28f23441 | 1676 | break; |
79072805 | 1677 | case '\020': /* ^P */ |
3280af22 | 1678 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1ee4443e IZ |
1679 | if (PL_perldb && !PL_DBsingle) |
1680 | init_debugger(); | |
79072805 LW |
1681 | break; |
1682 | case '\024': /* ^T */ | |
88e89b8a | 1683 | #ifdef BIG_TIME |
6b88bc9c | 1684 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 1685 | #else |
3280af22 | 1686 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a | 1687 | #endif |
79072805 LW |
1688 | break; |
1689 | case '\027': /* ^W */ | |
599cee73 PM |
1690 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
1691 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
0453d815 PM |
1692 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
1693 | | (i ? G_WARN_ON : G_WARN_OFF) ; | |
599cee73 | 1694 | } |
79072805 LW |
1695 | break; |
1696 | case '.': | |
3280af22 NIS |
1697 | if (PL_localizing) { |
1698 | if (PL_localizing == 1) | |
1699 | save_sptr((SV**)&PL_last_in_gv); | |
748a9306 | 1700 | } |
3280af22 NIS |
1701 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
1702 | IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv); | |
79072805 LW |
1703 | break; |
1704 | case '^': | |
3280af22 | 1705 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 1706 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 1707 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
1708 | break; |
1709 | case '~': | |
3280af22 | 1710 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 1711 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 1712 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
1713 | break; |
1714 | case '=': | |
3280af22 | 1715 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1716 | break; |
1717 | case '-': | |
3280af22 NIS |
1718 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1719 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
1720 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
1721 | break; |
1722 | case '%': | |
3280af22 | 1723 | IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1724 | break; |
1725 | case '|': | |
4b65379b | 1726 | { |
3280af22 | 1727 | IO *io = GvIOp(PL_defoutgv); |
4b65379b CS |
1728 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
1729 | IoFLAGS(io) &= ~IOf_FLUSH; | |
1730 | else { | |
1731 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
1732 | PerlIO *ofp = IoOFP(io); | |
1733 | if (ofp) | |
1734 | (void)PerlIO_flush(ofp); | |
1735 | IoFLAGS(io) |= IOf_FLUSH; | |
1736 | } | |
1737 | } | |
79072805 LW |
1738 | } |
1739 | break; | |
1740 | case '*': | |
463ee0b2 | 1741 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
3280af22 | 1742 | PL_multiline = (i != 0); |
79072805 LW |
1743 | break; |
1744 | case '/': | |
3280af22 NIS |
1745 | SvREFCNT_dec(PL_nrs); |
1746 | PL_nrs = newSVsv(sv); | |
1747 | SvREFCNT_dec(PL_rs); | |
1748 | PL_rs = SvREFCNT_inc(PL_nrs); | |
79072805 LW |
1749 | break; |
1750 | case '\\': | |
3280af22 NIS |
1751 | if (PL_ors) |
1752 | Safefree(PL_ors); | |
e3c19b7b | 1753 | if (SvOK(sv) || SvGMAGICAL(sv)) |
3280af22 | 1754 | PL_ors = savepv(SvPV(sv,PL_orslen)); |
e3c19b7b | 1755 | else { |
3280af22 NIS |
1756 | PL_ors = Nullch; |
1757 | PL_orslen = 0; | |
e3c19b7b | 1758 | } |
79072805 LW |
1759 | break; |
1760 | case ',': | |
3280af22 NIS |
1761 | if (PL_ofs) |
1762 | Safefree(PL_ofs); | |
1763 | PL_ofs = savepv(SvPV(sv, PL_ofslen)); | |
79072805 LW |
1764 | break; |
1765 | case '#': | |
3280af22 NIS |
1766 | if (PL_ofmt) |
1767 | Safefree(PL_ofmt); | |
2d8e6c8d | 1768 | PL_ofmt = savepv(SvPV(sv,len)); |
79072805 LW |
1769 | break; |
1770 | case '[': | |
3280af22 | 1771 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1772 | break; |
1773 | case '?': | |
ff0cee69 | 1774 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
1775 | if (PL_localizing == 2) { |
1776 | PL_statusvalue = LvTARGOFF(sv); | |
1777 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 1778 | } |
1779 | else | |
1780 | #endif | |
1781 | #ifdef VMSISH_STATUS | |
1782 | if (VMSISH_STATUS) | |
1783 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); | |
1784 | else | |
1785 | #endif | |
1786 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
79072805 LW |
1787 | break; |
1788 | case '!': | |
78987ded | 1789 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
f86702cc | 1790 | (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno); |
79072805 LW |
1791 | break; |
1792 | case '<': | |
3280af22 NIS |
1793 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1794 | if (PL_delaymagic) { | |
1795 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
1796 | break; /* don't do magic till later */ |
1797 | } | |
1798 | #ifdef HAS_SETRUID | |
b28d0864 | 1799 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
1800 | #else |
1801 | #ifdef HAS_SETREUID | |
3280af22 | 1802 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 1803 | #else |
85e6fe83 | 1804 | #ifdef HAS_SETRESUID |
b28d0864 | 1805 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 1806 | #else |
b28d0864 NIS |
1807 | if (PL_uid == PL_euid) /* special case $< = $> */ |
1808 | (void)PerlProc_setuid(PL_uid); | |
a0d0e21e | 1809 | else { |
b28d0864 | 1810 | PL_uid = (I32)PerlProc_getuid(); |
cea2e8a9 | 1811 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 1812 | } |
79072805 LW |
1813 | #endif |
1814 | #endif | |
85e6fe83 | 1815 | #endif |
3280af22 NIS |
1816 | PL_uid = (I32)PerlProc_getuid(); |
1817 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); | |
79072805 LW |
1818 | break; |
1819 | case '>': | |
3280af22 NIS |
1820 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1821 | if (PL_delaymagic) { | |
1822 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
1823 | break; /* don't do magic till later */ |
1824 | } | |
1825 | #ifdef HAS_SETEUID | |
3280af22 | 1826 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
1827 | #else |
1828 | #ifdef HAS_SETREUID | |
b28d0864 | 1829 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
1830 | #else |
1831 | #ifdef HAS_SETRESUID | |
6b88bc9c | 1832 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 1833 | #else |
b28d0864 NIS |
1834 | if (PL_euid == PL_uid) /* special case $> = $< */ |
1835 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 1836 | else { |
b28d0864 | 1837 | PL_euid = (I32)PerlProc_geteuid(); |
cea2e8a9 | 1838 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 1839 | } |
79072805 LW |
1840 | #endif |
1841 | #endif | |
85e6fe83 | 1842 | #endif |
3280af22 NIS |
1843 | PL_euid = (I32)PerlProc_geteuid(); |
1844 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); | |
79072805 LW |
1845 | break; |
1846 | case '(': | |
3280af22 NIS |
1847 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1848 | if (PL_delaymagic) { | |
1849 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
1850 | break; /* don't do magic till later */ |
1851 | } | |
1852 | #ifdef HAS_SETRGID | |
b28d0864 | 1853 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
1854 | #else |
1855 | #ifdef HAS_SETREGID | |
3280af22 | 1856 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
1857 | #else |
1858 | #ifdef HAS_SETRESGID | |
b28d0864 | 1859 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 1860 | #else |
b28d0864 NIS |
1861 | if (PL_gid == PL_egid) /* special case $( = $) */ |
1862 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 1863 | else { |
b28d0864 | 1864 | PL_gid = (I32)PerlProc_getgid(); |
cea2e8a9 | 1865 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 1866 | } |
79072805 LW |
1867 | #endif |
1868 | #endif | |
85e6fe83 | 1869 | #endif |
3280af22 NIS |
1870 | PL_gid = (I32)PerlProc_getgid(); |
1871 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); | |
79072805 LW |
1872 | break; |
1873 | case ')': | |
5cd24f17 | 1874 | #ifdef HAS_SETGROUPS |
1875 | { | |
2d8e6c8d | 1876 | char *p = SvPV(sv, len); |
5cd24f17 | 1877 | Groups_t gary[NGROUPS]; |
1878 | ||
5cd24f17 | 1879 | while (isSPACE(*p)) |
1880 | ++p; | |
097ee67d | 1881 | PL_egid = I_V(atol(p)); |
5cd24f17 | 1882 | for (i = 0; i < NGROUPS; ++i) { |
1883 | while (*p && !isSPACE(*p)) | |
1884 | ++p; | |
1885 | while (isSPACE(*p)) | |
1886 | ++p; | |
1887 | if (!*p) | |
1888 | break; | |
097ee67d | 1889 | gary[i] = I_V(atol(p)); |
5cd24f17 | 1890 | } |
8cc95fdb | 1891 | if (i) |
1892 | (void)setgroups(i, gary); | |
5cd24f17 | 1893 | } |
1894 | #else /* HAS_SETGROUPS */ | |
b28d0864 | 1895 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 | 1896 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
1897 | if (PL_delaymagic) { |
1898 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
1899 | break; /* don't do magic till later */ |
1900 | } | |
1901 | #ifdef HAS_SETEGID | |
3280af22 | 1902 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
1903 | #else |
1904 | #ifdef HAS_SETREGID | |
b28d0864 | 1905 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
1906 | #else |
1907 | #ifdef HAS_SETRESGID | |
b28d0864 | 1908 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 1909 | #else |
b28d0864 NIS |
1910 | if (PL_egid == PL_gid) /* special case $) = $( */ |
1911 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 1912 | else { |
b28d0864 | 1913 | PL_egid = (I32)PerlProc_getegid(); |
cea2e8a9 | 1914 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 1915 | } |
79072805 LW |
1916 | #endif |
1917 | #endif | |
85e6fe83 | 1918 | #endif |
3280af22 NIS |
1919 | PL_egid = (I32)PerlProc_getegid(); |
1920 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); | |
79072805 LW |
1921 | break; |
1922 | case ':': | |
2d8e6c8d | 1923 | PL_chopset = SvPV_force(sv,len); |
79072805 LW |
1924 | break; |
1925 | case '0': | |
3280af22 NIS |
1926 | if (!PL_origalen) { |
1927 | s = PL_origargv[0]; | |
79072805 LW |
1928 | s += strlen(s); |
1929 | /* See if all the arguments are contiguous in memory */ | |
3280af22 NIS |
1930 | for (i = 1; i < PL_origargc; i++) { |
1931 | if (PL_origargv[i] == s + 1 | |
fb73857a | 1932 | #ifdef OS2 |
6b88bc9c | 1933 | || PL_origargv[i] == s + 2 |
fb73857a | 1934 | #endif |
1935 | ) | |
379c4362 GS |
1936 | { |
1937 | ++s; | |
1938 | s += strlen(s); /* this one is ok too */ | |
1939 | } | |
fb73857a | 1940 | else |
1941 | break; | |
79072805 | 1942 | } |
bbce6d69 | 1943 | /* can grab env area too? */ |
3280af22 | 1944 | if (PL_origenviron && (PL_origenviron[0] == s + 1 |
fb73857a | 1945 | #ifdef OS2 |
6b88bc9c | 1946 | || (PL_origenviron[0] == s + 9 && (s += 8)) |
fb73857a | 1947 | #endif |
1948 | )) { | |
66b1d557 | 1949 | my_setenv("NoNe SuCh", Nullch); |
79072805 | 1950 | /* force copy of environment */ |
3280af22 | 1951 | for (i = 0; PL_origenviron[i]; i++) |
379c4362 GS |
1952 | if (PL_origenviron[i] == s + 1) { |
1953 | ++s; | |
1954 | s += strlen(s); | |
1955 | } | |
fb73857a | 1956 | else |
1957 | break; | |
79072805 | 1958 | } |
3280af22 | 1959 | PL_origalen = s - PL_origargv[0]; |
79072805 | 1960 | } |
a0d0e21e | 1961 | s = SvPV_force(sv,len); |
8990e307 | 1962 | i = len; |
3280af22 NIS |
1963 | if (i >= PL_origalen) { |
1964 | i = PL_origalen; | |
fb73857a | 1965 | /* don't allow system to limit $0 seen by script */ |
1966 | /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */ | |
3280af22 NIS |
1967 | Copy(s, PL_origargv[0], i, char); |
1968 | s = PL_origargv[0]+i; | |
fb73857a | 1969 | *s = '\0'; |
79072805 LW |
1970 | } |
1971 | else { | |
3280af22 NIS |
1972 | Copy(s, PL_origargv[0], i, char); |
1973 | s = PL_origargv[0]+i; | |
79072805 | 1974 | *s++ = '\0'; |
3280af22 | 1975 | while (++i < PL_origalen) |
8990e307 | 1976 | *s++ = ' '; |
3280af22 NIS |
1977 | s = PL_origargv[0]+i; |
1978 | for (i = 1; i < PL_origargc; i++) | |
1979 | PL_origargv[i] = Nullch; | |
79072805 LW |
1980 | } |
1981 | break; | |
a863c7d1 MB |
1982 | #ifdef USE_THREADS |
1983 | case '@': | |
38a03e6e | 1984 | sv_setsv(thr->errsv, sv); |
a863c7d1 MB |
1985 | break; |
1986 | #endif /* USE_THREADS */ | |
79072805 LW |
1987 | } |
1988 | return 0; | |
1989 | } | |
1990 | ||
f93b4edd MB |
1991 | #ifdef USE_THREADS |
1992 | int | |
864dbfa3 | 1993 | Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg) |
f93b4edd MB |
1994 | { |
1995 | dTHR; | |
8b73bbec | 1996 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n", |
bc1f4c86 | 1997 | (unsigned long)thr, (unsigned long)sv);) |
f93b4edd | 1998 | if (MgOWNER(mg)) |
cea2e8a9 | 1999 | Perl_croak(aTHX_ "panic: magic_mutexfree"); |
f93b4edd MB |
2000 | MUTEX_DESTROY(MgMUTEXP(mg)); |
2001 | COND_DESTROY(MgCONDP(mg)); | |
2002 | return 0; | |
2003 | } | |
2004 | #endif /* USE_THREADS */ | |
2005 | ||
79072805 | 2006 | I32 |
864dbfa3 | 2007 | Perl_whichsig(pTHX_ char *sig) |
79072805 LW |
2008 | { |
2009 | register char **sigv; | |
2010 | ||
22c35a8c | 2011 | for (sigv = PL_sig_name+1; *sigv; sigv++) |
79072805 | 2012 | if (strEQ(sig,*sigv)) |
22c35a8c | 2013 | return PL_sig_num[sigv - PL_sig_name]; |
79072805 LW |
2014 | #ifdef SIGCLD |
2015 | if (strEQ(sig,"CHLD")) | |
2016 | return SIGCLD; | |
2017 | #endif | |
2018 | #ifdef SIGCHLD | |
2019 | if (strEQ(sig,"CLD")) | |
2020 | return SIGCHLD; | |
2021 | #endif | |
2022 | return 0; | |
2023 | } | |
2024 | ||
84902520 TB |
2025 | static SV* sig_sv; |
2026 | ||
ecfc5424 | 2027 | Signal_t |
cea2e8a9 | 2028 | Perl_sighandler(int sig) |
79072805 | 2029 | { |
cea2e8a9 | 2030 | dTHX; |
79072805 | 2031 | dSP; |
00d579c5 | 2032 | GV *gv = Nullgv; |
a0d0e21e | 2033 | HV *st; |
3280af22 | 2034 | SV *sv, *tSv = PL_Sv; |
00d579c5 | 2035 | CV *cv = Nullcv; |
533c011a | 2036 | OP *myop = PL_op; |
84902520 | 2037 | U32 flags = 0; |
3280af22 NIS |
2038 | I32 o_save_i = PL_savestack_ix, type; |
2039 | XPV *tXpv = PL_Xpv; | |
84902520 | 2040 | |
3280af22 | 2041 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2042 | flags |= 1; |
3280af22 | 2043 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2044 | flags |= 4; |
3280af22 | 2045 | if (PL_retstack_ix < PL_retstack_max - 2) |
84902520 | 2046 | flags |= 8; |
3280af22 | 2047 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2048 | flags |= 16; |
2049 | ||
22c35a8c | 2050 | if (!PL_psig_ptr[sig]) |
cea2e8a9 | 2051 | Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n", |
22c35a8c | 2052 | PL_sig_name[sig]); |
ff0cee69 | 2053 | |
84902520 TB |
2054 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2055 | infinity, so we fix 4 (in fact 5): */ | |
2056 | if (flags & 1) { | |
3280af22 NIS |
2057 | PL_savestack_ix += 5; /* Protect save in progress. */ |
2058 | o_save_i = PL_savestack_ix; | |
51371543 | 2059 | SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags); |
84902520 TB |
2060 | } |
2061 | if (flags & 4) | |
3280af22 | 2062 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2063 | if (flags & 8) { |
3280af22 NIS |
2064 | PL_retstack_ix++; |
2065 | PL_retstack[PL_retstack_ix] = NULL; | |
84902520 TB |
2066 | } |
2067 | if (flags & 16) | |
3280af22 | 2068 | PL_scopestack_ix += 1; |
84902520 | 2069 | /* sv_2cv is too complicated, try a simpler variant first: */ |
22c35a8c | 2070 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 | 2071 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c | 2072 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 | 2073 | |
a0d0e21e | 2074 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2075 | if (ckWARN(WARN_SIGNAL)) |
cea2e8a9 | 2076 | Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2077 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2078 | : ((cv && CvGV(cv)) |
2079 | ? GvENAME(CvGV(cv)) | |
2080 | : "__ANON__"))); | |
2081 | goto cleanup; | |
79072805 LW |
2082 | } |
2083 | ||
22c35a8c GS |
2084 | if(PL_psig_name[sig]) { |
2085 | sv = SvREFCNT_inc(PL_psig_name[sig]); | |
84902520 TB |
2086 | flags |= 64; |
2087 | sig_sv = sv; | |
2088 | } else { | |
ff0cee69 | 2089 | sv = sv_newmortal(); |
22c35a8c | 2090 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2091 | } |
e336de0d | 2092 | |
e788e7d3 | 2093 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2094 | PUSHMARK(SP); |
79072805 | 2095 | PUSHs(sv); |
79072805 | 2096 | PUTBACK; |
a0d0e21e | 2097 | |
864dbfa3 | 2098 | call_sv((SV*)cv, G_DISCARD); |
79072805 | 2099 | |
d3acc0f7 | 2100 | POPSTACK; |
00d579c5 | 2101 | cleanup: |
84902520 | 2102 | if (flags & 1) |
3280af22 | 2103 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
84902520 | 2104 | if (flags & 4) |
3280af22 | 2105 | PL_markstack_ptr--; |
84902520 | 2106 | if (flags & 8) |
3280af22 | 2107 | PL_retstack_ix--; |
84902520 | 2108 | if (flags & 16) |
3280af22 | 2109 | PL_scopestack_ix -= 1; |
84902520 TB |
2110 | if (flags & 64) |
2111 | SvREFCNT_dec(sv); | |
533c011a | 2112 | PL_op = myop; /* Apparently not needed... */ |
84902520 | 2113 | |
3280af22 NIS |
2114 | PL_Sv = tSv; /* Restore global temporaries. */ |
2115 | PL_Xpv = tXpv; | |
79072805 LW |
2116 | return; |
2117 | } | |
4e35701f NIS |
2118 | |
2119 | ||
51371543 GS |
2120 | #ifdef PERL_OBJECT |
2121 | #define NO_XSLOCKS | |
2122 | #include "XSUB.h" | |
2123 | #endif | |
2124 | ||
2125 | static void | |
2126 | restore_magic(pTHXo_ void *p) | |
2127 | { | |
2128 | dTHR; | |
2129 | MGS* mgs = SSPTR((I32)p, MGS*); | |
2130 | SV* sv = mgs->mgs_sv; | |
2131 | ||
2132 | if (!sv) | |
2133 | return; | |
2134 | ||
2135 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2136 | { | |
2137 | if (mgs->mgs_flags) | |
2138 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2139 | else | |
2140 | mg_magical(sv); | |
2141 | if (SvGMAGICAL(sv)) | |
2142 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
2143 | } | |
2144 | ||
2145 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2146 | ||
2147 | /* If we're still on top of the stack, pop us off. (That condition | |
2148 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2149 | * if it's being called via leave_scope.) | |
2150 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2151 | * may leave alloc gunk on the savestack, and some code | |
2152 | * (e.g. sighandler) doesn't expect that... | |
2153 | */ | |
2154 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2155 | { | |
2156 | I32 popval = SSPOPINT; | |
2157 | assert(popval == SAVEt_DESTRUCTOR); | |
2158 | PL_savestack_ix -= 2; | |
2159 | popval = SSPOPINT; | |
2160 | assert(popval == SAVEt_ALLOC); | |
2161 | popval = SSPOPINT; | |
2162 | PL_savestack_ix -= popval; | |
2163 | } | |
2164 | ||
2165 | } | |
2166 | ||
2167 | static void | |
2168 | unwind_handler_stack(pTHXo_ void *p) | |
2169 | { | |
2170 | dTHR; | |
2171 | U32 flags = *(U32*)p; | |
2172 | ||
2173 | if (flags & 1) | |
2174 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
2175 | /* cxstack_ix-- Not needed, die already unwound it. */ | |
2176 | if (flags & 64) | |
2177 | SvREFCNT_dec(sig_sv); | |
2178 | } |