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 | ||
51371543 GS |
30 | static void restore_magic(pTHXo_ void *p); |
31 | static void unwind_handler_stack(pTHXo_ void *p); | |
32 | ||
c07a80fd | 33 | /* |
34 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
35 | */ | |
36 | ||
37 | struct magic_state { | |
38 | SV* mgs_sv; | |
39 | U32 mgs_flags; | |
455ece5e | 40 | I32 mgs_ss_ix; |
c07a80fd | 41 | }; |
455ece5e | 42 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
43 | |
44 | STATIC void | |
cea2e8a9 | 45 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 46 | { |
46124e9e | 47 | dTHR; |
455ece5e | 48 | MGS* mgs; |
c07a80fd | 49 | assert(SvMAGICAL(sv)); |
50 | ||
c76ac1ee | 51 | SAVEDESTRUCTOR_X(restore_magic, (void*)mgs_ix); |
455ece5e AD |
52 | |
53 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 54 | mgs->mgs_sv = sv; |
55 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); | |
455ece5e | 56 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd | 57 | |
58 | SvMAGICAL_off(sv); | |
59 | SvREADONLY_off(sv); | |
60 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; | |
c07a80fd | 61 | } |
62 | ||
8990e307 | 63 | void |
864dbfa3 | 64 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 LW |
65 | { |
66 | MAGIC* mg; | |
67 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
68 | MGVTBL* vtbl = mg->mg_virtual; | |
69 | if (vtbl) { | |
2b260de0 | 70 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 LW |
71 | SvGMAGICAL_on(sv); |
72 | if (vtbl->svt_set) | |
73 | SvSMAGICAL_on(sv); | |
2b260de0 | 74 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) |
8990e307 LW |
75 | SvRMAGICAL_on(sv); |
76 | } | |
77 | } | |
78 | } | |
79 | ||
79072805 | 80 | int |
864dbfa3 | 81 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 82 | { |
46124e9e | 83 | dTHR; |
455ece5e | 84 | I32 mgs_ix; |
79072805 | 85 | MAGIC* mg; |
c6496cc7 | 86 | MAGIC** mgp; |
760ac839 | 87 | int mgp_valid = 0; |
463ee0b2 | 88 | |
455ece5e AD |
89 | mgs_ix = SSNEW(sizeof(MGS)); |
90 | save_magic(mgs_ix, sv); | |
463ee0b2 | 91 | |
c6496cc7 | 92 | mgp = &SvMAGIC(sv); |
93 | while ((mg = *mgp) != 0) { | |
79072805 | 94 | MGVTBL* vtbl = mg->mg_virtual; |
2b260de0 | 95 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
316ad4fe | 96 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
c6496cc7 | 97 | /* Ignore this magic if it's been deleted */ |
48e43a1c CS |
98 | if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && |
99 | (mg->mg_flags & MGf_GSKIP)) | |
455ece5e | 100 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 101 | } |
c6496cc7 | 102 | /* Advance to next magic (complicated by possible deletion) */ |
760ac839 | 103 | if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) { |
c6496cc7 | 104 | mgp = &mg->mg_moremagic; |
760ac839 LW |
105 | mgp_valid = 1; |
106 | } | |
107 | else | |
108 | mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */ | |
79072805 | 109 | } |
463ee0b2 | 110 | |
51371543 | 111 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 LW |
112 | return 0; |
113 | } | |
114 | ||
115 | int | |
864dbfa3 | 116 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 117 | { |
46124e9e | 118 | dTHR; |
455ece5e | 119 | I32 mgs_ix; |
79072805 | 120 | MAGIC* mg; |
463ee0b2 LW |
121 | MAGIC* nextmg; |
122 | ||
455ece5e AD |
123 | mgs_ix = SSNEW(sizeof(MGS)); |
124 | save_magic(mgs_ix, sv); | |
463ee0b2 LW |
125 | |
126 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
79072805 | 127 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 128 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
129 | if (mg->mg_flags & MGf_GSKIP) { |
130 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
455ece5e | 131 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 132 | } |
2b260de0 | 133 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 | 134 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 | 135 | } |
463ee0b2 | 136 | |
51371543 | 137 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 LW |
138 | return 0; |
139 | } | |
140 | ||
141 | U32 | |
864dbfa3 | 142 | Perl_mg_length(pTHX_ SV *sv) |
79072805 LW |
143 | { |
144 | MAGIC* mg; | |
748a9306 | 145 | char *junk; |
463ee0b2 | 146 | STRLEN len; |
463ee0b2 | 147 | |
79072805 LW |
148 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
149 | MGVTBL* vtbl = mg->mg_virtual; | |
2b260de0 | 150 | if (vtbl && vtbl->svt_len) { |
455ece5e | 151 | I32 mgs_ix; |
48e43a1c | 152 | |
455ece5e AD |
153 | mgs_ix = SSNEW(sizeof(MGS)); |
154 | save_magic(mgs_ix, sv); | |
a0d0e21e | 155 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 156 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
51371543 | 157 | restore_magic(aTHXo_ (void*)mgs_ix); |
85e6fe83 LW |
158 | return len; |
159 | } | |
160 | } | |
161 | ||
748a9306 | 162 | junk = SvPV(sv, len); |
463ee0b2 | 163 | return len; |
79072805 LW |
164 | } |
165 | ||
93965878 | 166 | I32 |
864dbfa3 | 167 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
168 | { |
169 | MAGIC* mg; | |
170 | I32 len; | |
171 | ||
172 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
173 | MGVTBL* vtbl = mg->mg_virtual; | |
2b260de0 | 174 | if (vtbl && vtbl->svt_len) { |
455ece5e AD |
175 | I32 mgs_ix; |
176 | ||
177 | mgs_ix = SSNEW(sizeof(MGS)); | |
178 | save_magic(mgs_ix, sv); | |
93965878 | 179 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 180 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
51371543 | 181 | restore_magic(aTHXo_ (void*)mgs_ix); |
93965878 NIS |
182 | return len; |
183 | } | |
184 | } | |
185 | ||
186 | switch(SvTYPE(sv)) { | |
187 | case SVt_PVAV: | |
188 | len = AvFILLp((AV *) sv); /* Fallback to non-tied array */ | |
189 | return len; | |
190 | case SVt_PVHV: | |
191 | /* FIXME */ | |
192 | default: | |
cea2e8a9 | 193 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
194 | break; |
195 | } | |
196 | return 0; | |
197 | } | |
198 | ||
79072805 | 199 | int |
864dbfa3 | 200 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 201 | { |
455ece5e | 202 | I32 mgs_ix; |
79072805 | 203 | MAGIC* mg; |
463ee0b2 | 204 | |
455ece5e AD |
205 | mgs_ix = SSNEW(sizeof(MGS)); |
206 | save_magic(mgs_ix, sv); | |
463ee0b2 | 207 | |
79072805 LW |
208 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
209 | MGVTBL* vtbl = mg->mg_virtual; | |
a0d0e21e LW |
210 | /* omit GSKIP -- never set here */ |
211 | ||
2b260de0 | 212 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 | 213 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 214 | } |
463ee0b2 | 215 | |
51371543 | 216 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 LW |
217 | return 0; |
218 | } | |
219 | ||
93a17b20 | 220 | MAGIC* |
864dbfa3 | 221 | Perl_mg_find(pTHX_ SV *sv, int type) |
93a17b20 LW |
222 | { |
223 | MAGIC* mg; | |
93a17b20 LW |
224 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
225 | if (mg->mg_type == type) | |
226 | return mg; | |
227 | } | |
228 | return 0; | |
229 | } | |
230 | ||
79072805 | 231 | int |
864dbfa3 | 232 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 233 | { |
463ee0b2 | 234 | int count = 0; |
79072805 | 235 | MAGIC* mg; |
463ee0b2 LW |
236 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
237 | if (isUPPER(mg->mg_type)) { | |
33c27489 GS |
238 | sv_magic(nsv, |
239 | mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj, | |
240 | toLOWER(mg->mg_type), key, klen); | |
463ee0b2 | 241 | count++; |
79072805 | 242 | } |
79072805 | 243 | } |
463ee0b2 | 244 | return count; |
79072805 LW |
245 | } |
246 | ||
247 | int | |
864dbfa3 | 248 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
249 | { |
250 | MAGIC* mg; | |
251 | MAGIC* moremagic; | |
252 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
253 | MGVTBL* vtbl = mg->mg_virtual; | |
254 | moremagic = mg->mg_moremagic; | |
2b260de0 | 255 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 256 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
93a17b20 | 257 | if (mg->mg_ptr && mg->mg_type != 'g') |
565764a8 | 258 | if (mg->mg_len >= 0) |
88e89b8a | 259 | Safefree(mg->mg_ptr); |
565764a8 | 260 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 261 | SvREFCNT_dec((SV*)mg->mg_ptr); |
85e6fe83 | 262 | if (mg->mg_flags & MGf_REFCOUNTED) |
8990e307 | 263 | SvREFCNT_dec(mg->mg_obj); |
79072805 LW |
264 | Safefree(mg); |
265 | } | |
266 | SvMAGIC(sv) = 0; | |
267 | return 0; | |
268 | } | |
269 | ||
270 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) | |
271 | #include <signal.h> | |
272 | #endif | |
273 | ||
942e002e | 274 | U32 |
864dbfa3 | 275 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 IZ |
276 | { |
277 | dTHR; | |
278 | register char *s; | |
279 | register I32 i; | |
280 | register REGEXP *rx; | |
281 | char *t; | |
282 | ||
8f580fb8 IZ |
283 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
284 | if (mg->mg_obj) /* @+ */ | |
285 | return rx->nparens; | |
286 | else /* @- */ | |
287 | return rx->lastparen; | |
288 | } | |
289 | ||
942e002e | 290 | return (U32)-1; |
6cef1e77 IZ |
291 | } |
292 | ||
293 | int | |
864dbfa3 | 294 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 IZ |
295 | { |
296 | dTHR; | |
297 | register I32 paren; | |
cf93c79d | 298 | register I32 s; |
6cef1e77 IZ |
299 | register I32 i; |
300 | register REGEXP *rx; | |
cf93c79d | 301 | I32 t; |
6cef1e77 IZ |
302 | |
303 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { | |
304 | paren = mg->mg_len; | |
305 | if (paren < 0) | |
306 | return 0; | |
307 | if (paren <= rx->nparens && | |
cf93c79d IZ |
308 | (s = rx->startp[paren]) != -1 && |
309 | (t = rx->endp[paren]) != -1) | |
6cef1e77 IZ |
310 | { |
311 | if (mg->mg_obj) /* @+ */ | |
cf93c79d | 312 | i = t; |
6cef1e77 | 313 | else /* @- */ |
cf93c79d | 314 | i = s; |
6cef1e77 IZ |
315 | sv_setiv(sv,i); |
316 | } | |
317 | } | |
318 | return 0; | |
319 | } | |
320 | ||
93a17b20 | 321 | U32 |
864dbfa3 | 322 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 323 | { |
a863c7d1 | 324 | dTHR; |
93a17b20 LW |
325 | register I32 paren; |
326 | register char *s; | |
327 | register I32 i; | |
d9f97599 | 328 | register REGEXP *rx; |
748a9306 | 329 | char *t; |
93a17b20 LW |
330 | |
331 | switch (*mg->mg_ptr) { | |
332 | case '1': case '2': case '3': case '4': | |
333 | case '5': case '6': case '7': case '8': case '9': case '&': | |
3280af22 | 334 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
335 | I32 s1, t1; |
336 | ||
93a17b20 LW |
337 | paren = atoi(mg->mg_ptr); |
338 | getparen: | |
d9f97599 | 339 | if (paren <= rx->nparens && |
cf93c79d IZ |
340 | (s1 = rx->startp[paren]) != -1 && |
341 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 342 | { |
cf93c79d | 343 | i = t1 - s1; |
71be2cbc | 344 | if (i >= 0) |
93a17b20 | 345 | return i; |
93a17b20 | 346 | } |
93a17b20 | 347 | } |
748a9306 | 348 | return 0; |
93a17b20 | 349 | case '+': |
3280af22 | 350 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 | 351 | paren = rx->lastparen; |
13f57bf8 CS |
352 | if (paren) |
353 | goto getparen; | |
93a17b20 | 354 | } |
748a9306 | 355 | return 0; |
93a17b20 | 356 | case '`': |
3280af22 | 357 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
358 | if (rx->startp[0] != -1) { |
359 | i = rx->startp[0]; | |
71be2cbc | 360 | if (i >= 0) |
93a17b20 | 361 | return i; |
93a17b20 | 362 | } |
93a17b20 | 363 | } |
748a9306 | 364 | return 0; |
93a17b20 | 365 | case '\'': |
3280af22 | 366 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
367 | if (rx->endp[0] != -1) { |
368 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 369 | if (i >= 0) |
5cd24f17 | 370 | return i; |
93a17b20 | 371 | } |
93a17b20 | 372 | } |
748a9306 | 373 | return 0; |
93a17b20 | 374 | case ',': |
3280af22 | 375 | return (STRLEN)PL_ofslen; |
93a17b20 | 376 | case '\\': |
3280af22 | 377 | return (STRLEN)PL_orslen; |
93a17b20 LW |
378 | } |
379 | magic_get(sv,mg); | |
2d8e6c8d GS |
380 | if (!SvPOK(sv) && SvNIOK(sv)) { |
381 | STRLEN n_a; | |
382 | sv_2pv(sv, &n_a); | |
383 | } | |
93a17b20 LW |
384 | if (SvPOK(sv)) |
385 | return SvCUR(sv); | |
386 | return 0; | |
387 | } | |
388 | ||
79072805 | 389 | int |
864dbfa3 | 390 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 391 | { |
a863c7d1 | 392 | dTHR; |
79072805 LW |
393 | register I32 paren; |
394 | register char *s; | |
395 | register I32 i; | |
d9f97599 | 396 | register REGEXP *rx; |
748a9306 | 397 | char *t; |
79072805 LW |
398 | |
399 | switch (*mg->mg_ptr) { | |
748a9306 | 400 | case '\001': /* ^A */ |
3280af22 | 401 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 402 | break; |
49460fe6 NIS |
403 | case '\003': /* ^C */ |
404 | sv_setiv(sv, (IV)PL_minus_c); | |
405 | break; | |
406 | ||
79072805 | 407 | case '\004': /* ^D */ |
3280af22 | 408 | sv_setiv(sv, (IV)(PL_debug & 32767)); |
79072805 | 409 | break; |
28f23441 | 410 | case '\005': /* ^E */ |
cd39f2b6 JH |
411 | #ifdef MACOS_TRADITIONAL |
412 | { | |
413 | char msg[256]; | |
414 | ||
415 | sv_setnv(sv,(double)gLastMacOSErr); | |
416 | sv_setpv(sv, gLastMacOSErr ? GetSysErrText(gLastMacOSErr, msg) : ""); | |
417 | } | |
418 | #else | |
28f23441 | 419 | #ifdef VMS |
420 | { | |
421 | # include <descrip.h> | |
422 | # include <starlet.h> | |
423 | char msg[255]; | |
424 | $DESCRIPTOR(msgdsc,msg); | |
65202027 | 425 | sv_setnv(sv,(NV) vaxc$errno); |
28f23441 | 426 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) |
427 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
428 | else | |
429 | sv_setpv(sv,""); | |
430 | } | |
431 | #else | |
88e89b8a | 432 | #ifdef OS2 |
fb73857a | 433 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
65202027 | 434 | sv_setnv(sv, (NV)errno); |
fb73857a | 435 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
436 | } else { | |
017f25f1 IZ |
437 | if (errno != errno_isOS2) { |
438 | int tmp = _syserrno(); | |
439 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ | |
440 | Perl_rc = tmp; | |
441 | } | |
65202027 | 442 | sv_setnv(sv, (NV)Perl_rc); |
fb73857a | 443 | sv_setpv(sv, os2error(Perl_rc)); |
444 | } | |
88e89b8a | 445 | #else |
22fae026 TM |
446 | #ifdef WIN32 |
447 | { | |
448 | DWORD dwErr = GetLastError(); | |
65202027 | 449 | sv_setnv(sv, (NV)dwErr); |
22fae026 | 450 | if (dwErr) |
76e3520e | 451 | { |
0cb96387 | 452 | PerlProc_GetOSError(sv, dwErr); |
76e3520e | 453 | } |
22fae026 TM |
454 | else |
455 | sv_setpv(sv, ""); | |
456 | SetLastError(dwErr); | |
457 | } | |
458 | #else | |
65202027 | 459 | sv_setnv(sv, (NV)errno); |
28f23441 | 460 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
461 | #endif | |
88e89b8a | 462 | #endif |
22fae026 | 463 | #endif |
cd39f2b6 | 464 | #endif |
946ec16e | 465 | SvNOK_on(sv); /* what a wonderful hack! */ |
28f23441 | 466 | break; |
79072805 | 467 | case '\006': /* ^F */ |
3280af22 | 468 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 469 | break; |
a0d0e21e | 470 | case '\010': /* ^H */ |
3280af22 | 471 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 472 | break; |
9d116dd7 | 473 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
474 | if (PL_inplace) |
475 | sv_setpv(sv, PL_inplace); | |
79072805 | 476 | else |
3280af22 | 477 | sv_setsv(sv, &PL_sv_undef); |
79072805 | 478 | break; |
28f23441 | 479 | case '\017': /* ^O */ |
3280af22 | 480 | sv_setpv(sv, PL_osname); |
28f23441 | 481 | break; |
79072805 | 482 | case '\020': /* ^P */ |
3280af22 | 483 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 484 | break; |
fb73857a | 485 | case '\023': /* ^S */ |
d58bf5aa MB |
486 | { |
487 | dTHR; | |
3280af22 | 488 | if (PL_lex_state != LEX_NOTPARSING) |
d58bf5aa | 489 | SvOK_off(sv); |
3280af22 | 490 | else if (PL_in_eval) |
d58bf5aa MB |
491 | sv_setiv(sv, 1); |
492 | else | |
493 | sv_setiv(sv, 0); | |
494 | } | |
fb73857a | 495 | break; |
79072805 | 496 | case '\024': /* ^T */ |
88e89b8a | 497 | #ifdef BIG_TIME |
6b88bc9c | 498 | sv_setnv(sv, PL_basetime); |
88e89b8a | 499 | #else |
3280af22 | 500 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 501 | #endif |
79072805 | 502 | break; |
4438c4b7 JH |
503 | case '\027': /* ^W & $^Warnings*/ |
504 | if (*(mg->mg_ptr+1) == '\0') | |
505 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); | |
506 | else if (strEQ(mg->mg_ptr, "\027arnings")) { | |
507 | if (PL_compiling.cop_warnings == WARN_NONE || | |
508 | PL_compiling.cop_warnings == WARN_STD) | |
509 | { | |
510 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; | |
511 | } | |
512 | else if (PL_compiling.cop_warnings == WARN_ALL) { | |
513 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
514 | } | |
515 | else { | |
516 | sv_setsv(sv, PL_compiling.cop_warnings); | |
517 | } | |
518 | } | |
79072805 LW |
519 | break; |
520 | case '1': case '2': case '3': case '4': | |
521 | case '5': case '6': case '7': case '8': case '9': case '&': | |
3280af22 | 522 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
523 | I32 s1, t1; |
524 | ||
a863c7d1 MB |
525 | /* |
526 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
527 | * XXX Does the new way break anything? | |
528 | */ | |
529 | paren = atoi(mg->mg_ptr); | |
79072805 | 530 | getparen: |
d9f97599 | 531 | if (paren <= rx->nparens && |
cf93c79d IZ |
532 | (s1 = rx->startp[paren]) != -1 && |
533 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 534 | { |
cf93c79d IZ |
535 | i = t1 - s1; |
536 | s = rx->subbeg + s1; | |
13f57bf8 | 537 | getrx: |
748a9306 | 538 | if (i >= 0) { |
13f57bf8 | 539 | bool was_tainted; |
3280af22 NIS |
540 | if (PL_tainting) { |
541 | was_tainted = PL_tainted; | |
542 | PL_tainted = FALSE; | |
13f57bf8 | 543 | } |
cf93c79d | 544 | sv_setpvn(sv, s, i); |
3280af22 NIS |
545 | if (PL_tainting) |
546 | PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx)); | |
748a9306 LW |
547 | break; |
548 | } | |
79072805 | 549 | } |
79072805 | 550 | } |
3280af22 | 551 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
552 | break; |
553 | case '+': | |
3280af22 | 554 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 | 555 | paren = rx->lastparen; |
a0d0e21e LW |
556 | if (paren) |
557 | goto getparen; | |
79072805 | 558 | } |
3280af22 | 559 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
560 | break; |
561 | case '`': | |
3280af22 | 562 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
563 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
564 | i = rx->startp[0]; | |
13f57bf8 | 565 | goto getrx; |
79072805 | 566 | } |
79072805 | 567 | } |
3280af22 | 568 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
569 | break; |
570 | case '\'': | |
3280af22 | 571 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
572 | if (rx->subbeg && rx->endp[0] != -1) { |
573 | s = rx->subbeg + rx->endp[0]; | |
574 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 575 | goto getrx; |
79072805 | 576 | } |
79072805 | 577 | } |
3280af22 | 578 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
579 | break; |
580 | case '.': | |
581 | #ifndef lint | |
3280af22 NIS |
582 | if (GvIO(PL_last_in_gv)) { |
583 | sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv))); | |
79072805 LW |
584 | } |
585 | #endif | |
586 | break; | |
587 | case '?': | |
809a5acc | 588 | { |
809a5acc | 589 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 590 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
591 | LvTARGOFF(sv) = PL_statusvalue; |
592 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 593 | #endif |
809a5acc | 594 | } |
79072805 LW |
595 | break; |
596 | case '^': | |
3280af22 | 597 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
598 | if (s) |
599 | sv_setpv(sv,s); | |
600 | else { | |
3280af22 | 601 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 LW |
602 | sv_catpv(sv,"_TOP"); |
603 | } | |
604 | break; | |
605 | case '~': | |
3280af22 | 606 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 607 | if (!s) |
3280af22 | 608 | s = GvENAME(PL_defoutgv); |
79072805 LW |
609 | sv_setpv(sv,s); |
610 | break; | |
611 | #ifndef lint | |
612 | case '=': | |
3280af22 | 613 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
614 | break; |
615 | case '-': | |
3280af22 | 616 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
617 | break; |
618 | case '%': | |
3280af22 | 619 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 LW |
620 | break; |
621 | #endif | |
622 | case ':': | |
623 | break; | |
624 | case '/': | |
625 | break; | |
626 | case '[': | |
3280af22 | 627 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 LW |
628 | break; |
629 | case '|': | |
3280af22 | 630 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 LW |
631 | break; |
632 | case ',': | |
3280af22 | 633 | sv_setpvn(sv,PL_ofs,PL_ofslen); |
79072805 LW |
634 | break; |
635 | case '\\': | |
3280af22 | 636 | sv_setpvn(sv,PL_ors,PL_orslen); |
79072805 LW |
637 | break; |
638 | case '#': | |
3280af22 | 639 | sv_setpv(sv,PL_ofmt); |
79072805 LW |
640 | break; |
641 | case '!': | |
a5f75d66 | 642 | #ifdef VMS |
65202027 | 643 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 644 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 645 | #else |
88e89b8a | 646 | { |
647 | int saveerrno = errno; | |
65202027 | 648 | sv_setnv(sv, (NV)errno); |
88e89b8a | 649 | #ifdef OS2 |
ed344e4f IZ |
650 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
651 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 652 | else |
a5f75d66 | 653 | #endif |
2304df62 | 654 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 655 | errno = saveerrno; |
656 | } | |
657 | #endif | |
946ec16e | 658 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
659 | break; |
660 | case '<': | |
3280af22 | 661 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
662 | break; |
663 | case '>': | |
3280af22 | 664 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
665 | break; |
666 | case '(': | |
3280af22 | 667 | sv_setiv(sv, (IV)PL_gid); |
a52cb5f7 | 668 | #ifdef HAS_GETGROUPS |
785fb66b | 669 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid); |
a52cb5f7 | 670 | #endif |
79072805 LW |
671 | goto add_groups; |
672 | case ')': | |
3280af22 | 673 | sv_setiv(sv, (IV)PL_egid); |
a52cb5f7 | 674 | #ifdef HAS_GETGROUPS |
785fb66b | 675 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid); |
a52cb5f7 | 676 | #endif |
79072805 | 677 | add_groups: |
79072805 | 678 | #ifdef HAS_GETGROUPS |
79072805 | 679 | { |
a0d0e21e | 680 | Groups_t gary[NGROUPS]; |
79072805 | 681 | i = getgroups(NGROUPS,gary); |
46fc3d4c | 682 | while (--i >= 0) |
785fb66b | 683 | Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]); |
79072805 LW |
684 | } |
685 | #endif | |
29355cf7 | 686 | SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
687 | break; |
688 | case '*': | |
689 | break; | |
cd39f2b6 | 690 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
691 | case '0': |
692 | break; | |
cd39f2b6 | 693 | #endif |
a863c7d1 MB |
694 | #ifdef USE_THREADS |
695 | case '@': | |
38a03e6e | 696 | sv_setsv(sv, thr->errsv); |
a863c7d1 MB |
697 | break; |
698 | #endif /* USE_THREADS */ | |
79072805 | 699 | } |
a0d0e21e | 700 | return 0; |
79072805 LW |
701 | } |
702 | ||
703 | int | |
864dbfa3 | 704 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
705 | { |
706 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
707 | ||
708 | if (uf && uf->uf_val) | |
709 | (*uf->uf_val)(uf->uf_index, sv); | |
710 | return 0; | |
711 | } | |
712 | ||
713 | int | |
864dbfa3 | 714 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
715 | { |
716 | register char *s; | |
88e89b8a | 717 | char *ptr; |
5aabfad6 | 718 | STRLEN len, klen; |
a0d0e21e | 719 | I32 i; |
1e422769 | 720 | |
a0d0e21e | 721 | s = SvPV(sv,len); |
5aabfad6 | 722 | ptr = MgPV(mg,klen); |
88e89b8a | 723 | my_setenv(ptr, s); |
1e422769 | 724 | |
a0d0e21e LW |
725 | #ifdef DYNAMIC_ENV_FETCH |
726 | /* We just undefd an environment var. Is a replacement */ | |
727 | /* waiting in the wings? */ | |
728 | if (!len) { | |
5aabfad6 | 729 | SV **valp; |
6b88bc9c | 730 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 | 731 | s = SvPV(*valp, len); |
a0d0e21e LW |
732 | } |
733 | #endif | |
1e422769 | 734 | |
39e571d4 | 735 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
736 | /* And you'll never guess what the dog had */ |
737 | /* in its mouth... */ | |
3280af22 | 738 | if (PL_tainting) { |
1e422769 | 739 | MgTAINTEDDIR_off(mg); |
740 | #ifdef VMS | |
5aabfad6 | 741 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 | 742 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
743 | struct stat sbuf; | |
744 | int i = 0, j = 0; | |
745 | ||
746 | do { /* DCL$PATH may be a search list */ | |
747 | while (1) { /* as may dev portion of any element */ | |
748 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
749 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
750 | cando_by_name(S_IWUSR,0,elt) ) { | |
751 | MgTAINTEDDIR_on(mg); | |
752 | return 0; | |
753 | } | |
754 | } | |
755 | if ((cp = strchr(elt, ':')) != Nullch) | |
756 | *cp = '\0'; | |
757 | if (my_trnlnm(elt, eltbuf, j++)) | |
758 | elt = eltbuf; | |
759 | else | |
760 | break; | |
761 | } | |
762 | j = 0; | |
763 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
764 | } | |
765 | #endif /* VMS */ | |
5aabfad6 | 766 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e | 767 | char *strend = s + len; |
463ee0b2 LW |
768 | |
769 | while (s < strend) { | |
96827780 | 770 | char tmpbuf[256]; |
1e422769 | 771 | struct stat st; |
96827780 | 772 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e | 773 | s, strend, ':', &i); |
463ee0b2 | 774 | s++; |
96827780 MB |
775 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
776 | || *tmpbuf != '/' | |
c6ed36e1 | 777 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 778 | MgTAINTEDDIR_on(mg); |
1e422769 | 779 | return 0; |
780 | } | |
463ee0b2 | 781 | } |
79072805 LW |
782 | } |
783 | } | |
39e571d4 | 784 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 785 | |
79072805 LW |
786 | return 0; |
787 | } | |
788 | ||
789 | int | |
864dbfa3 | 790 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 791 | { |
2d8e6c8d GS |
792 | STRLEN n_a; |
793 | my_setenv(MgPV(mg,n_a),Nullch); | |
85e6fe83 LW |
794 | return 0; |
795 | } | |
796 | ||
88e89b8a | 797 | int |
864dbfa3 | 798 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 799 | { |
800 | #if defined(VMS) | |
cea2e8a9 | 801 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 802 | #else |
d58bf5aa | 803 | dTHR; |
3280af22 | 804 | if (PL_localizing) { |
fb73857a | 805 | HE* entry; |
2d8e6c8d | 806 | STRLEN n_a; |
fb73857a | 807 | magic_clear_all_env(sv,mg); |
808 | hv_iterinit((HV*)sv); | |
809 | while (entry = hv_iternext((HV*)sv)) { | |
810 | I32 keylen; | |
811 | my_setenv(hv_iterkey(entry, &keylen), | |
2d8e6c8d | 812 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a | 813 | } |
814 | } | |
815 | #endif | |
816 | return 0; | |
817 | } | |
818 | ||
819 | int | |
864dbfa3 | 820 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 821 | { |
3e3baf6d | 822 | #if defined(VMS) |
cea2e8a9 | 823 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d | 824 | #else |
7766f137 GS |
825 | # ifdef PERL_IMPLICIT_SYS |
826 | PerlEnv_clearenv(); | |
827 | # else | |
828 | # ifdef WIN32 | |
3e3baf6d TB |
829 | char *envv = GetEnvironmentStrings(); |
830 | char *cur = envv; | |
831 | STRLEN len; | |
832 | while (*cur) { | |
833 | char *end = strchr(cur,'='); | |
834 | if (end && end != cur) { | |
835 | *end = '\0'; | |
836 | my_setenv(cur,Nullch); | |
837 | *end = '='; | |
ac5c734f | 838 | cur = end + strlen(end+1)+2; |
3e3baf6d TB |
839 | } |
840 | else if ((len = strlen(cur))) | |
841 | cur += len+1; | |
842 | } | |
843 | FreeEnvironmentStrings(envv); | |
7766f137 GS |
844 | # else |
845 | # ifdef CYGWIN | |
2c2d71f5 JH |
846 | I32 i; |
847 | for (i = 0; environ[i]; i++) | |
848 | Safefree(environ[i]); | |
7766f137 GS |
849 | # else |
850 | # ifndef PERL_USE_SAFE_PUTENV | |
66b1d557 HM |
851 | I32 i; |
852 | ||
3280af22 | 853 | if (environ == PL_origenviron) |
f2517201 | 854 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 HM |
855 | else |
856 | for (i = 0; environ[i]; i++) | |
f2517201 | 857 | safesysfree(environ[i]); |
7766f137 GS |
858 | # endif /* PERL_USE_SAFE_PUTENV */ |
859 | # endif /* CYGWIN */ | |
f2517201 | 860 | |
66b1d557 HM |
861 | environ[0] = Nullch; |
862 | ||
7766f137 GS |
863 | # endif /* WIN32 */ |
864 | # endif /* PERL_IMPLICIT_SYS */ | |
f2517201 | 865 | #endif /* VMS */ |
3e3baf6d | 866 | return 0; |
66b1d557 HM |
867 | } |
868 | ||
869 | int | |
864dbfa3 | 870 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 871 | { |
872 | I32 i; | |
2d8e6c8d | 873 | STRLEN n_a; |
88e89b8a | 874 | /* Are we fetching a signal entry? */ |
2d8e6c8d | 875 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a | 876 | if (i) { |
22c35a8c GS |
877 | if(PL_psig_ptr[i]) |
878 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 879 | else { |
ff68c719 | 880 | Sighandler_t sigstate = rsignal_state(i); |
881 | ||
88e89b8a | 882 | /* cache state so we don't fetch it again */ |
ff68c719 | 883 | if(sigstate == SIG_IGN) |
88e89b8a | 884 | sv_setpv(sv,"IGNORE"); |
885 | else | |
3280af22 | 886 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c | 887 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 888 | SvTEMP_off(sv); |
889 | } | |
890 | } | |
891 | return 0; | |
892 | } | |
893 | int | |
864dbfa3 | 894 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 895 | { |
896 | I32 i; | |
2d8e6c8d | 897 | STRLEN n_a; |
88e89b8a | 898 | /* Are we clearing a signal entry? */ |
2d8e6c8d | 899 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a | 900 | if (i) { |
22c35a8c GS |
901 | if(PL_psig_ptr[i]) { |
902 | SvREFCNT_dec(PL_psig_ptr[i]); | |
903 | PL_psig_ptr[i]=0; | |
88e89b8a | 904 | } |
22c35a8c GS |
905 | if(PL_psig_name[i]) { |
906 | SvREFCNT_dec(PL_psig_name[i]); | |
907 | PL_psig_name[i]=0; | |
88e89b8a | 908 | } |
909 | } | |
910 | return 0; | |
911 | } | |
3d37d572 | 912 | |
85e6fe83 | 913 | int |
864dbfa3 | 914 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 915 | { |
11343788 | 916 | dTHR; |
79072805 LW |
917 | register char *s; |
918 | I32 i; | |
748a9306 | 919 | SV** svp; |
e72dc28c | 920 | STRLEN len; |
a0d0e21e | 921 | |
e72dc28c | 922 | s = MgPV(mg,len); |
748a9306 LW |
923 | if (*s == '_') { |
924 | if (strEQ(s,"__DIE__")) | |
3280af22 | 925 | svp = &PL_diehook; |
748a9306 | 926 | else if (strEQ(s,"__WARN__")) |
3280af22 | 927 | svp = &PL_warnhook; |
748a9306 | 928 | else |
cea2e8a9 | 929 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 930 | i = 0; |
4633a7c4 LW |
931 | if (*svp) { |
932 | SvREFCNT_dec(*svp); | |
933 | *svp = 0; | |
934 | } | |
748a9306 LW |
935 | } |
936 | else { | |
937 | i = whichsig(s); /* ...no, a brick */ | |
938 | if (!i) { | |
599cee73 | 939 | if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM")) |
cea2e8a9 | 940 | Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s); |
748a9306 LW |
941 | return 0; |
942 | } | |
22c35a8c GS |
943 | SvREFCNT_dec(PL_psig_name[i]); |
944 | SvREFCNT_dec(PL_psig_ptr[i]); | |
945 | PL_psig_ptr[i] = SvREFCNT_inc(sv); | |
88e89b8a | 946 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 947 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 948 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 949 | } |
a0d0e21e | 950 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 | 951 | if (i) |
3280af22 | 952 | (void)rsignal(i, PL_sighandlerp); |
748a9306 LW |
953 | else |
954 | *svp = SvREFCNT_inc(sv); | |
a0d0e21e LW |
955 | return 0; |
956 | } | |
e72dc28c | 957 | s = SvPV_force(sv,len); |
748a9306 LW |
958 | if (strEQ(s,"IGNORE")) { |
959 | if (i) | |
ff68c719 | 960 | (void)rsignal(i, SIG_IGN); |
748a9306 LW |
961 | else |
962 | *svp = 0; | |
963 | } | |
964 | else if (strEQ(s,"DEFAULT") || !*s) { | |
965 | if (i) | |
ff68c719 | 966 | (void)rsignal(i, SIG_DFL); |
748a9306 LW |
967 | else |
968 | *svp = 0; | |
969 | } | |
79072805 | 970 | else { |
5aabfad6 | 971 | /* |
972 | * We should warn if HINT_STRICT_REFS, but without | |
973 | * access to a known hint bit in a known OP, we can't | |
974 | * tell whether HINT_STRICT_REFS is in force or not. | |
975 | */ | |
46fc3d4c | 976 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c | 977 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 | 978 | if (i) |
3280af22 | 979 | (void)rsignal(i, PL_sighandlerp); |
748a9306 LW |
980 | else |
981 | *svp = SvREFCNT_inc(sv); | |
79072805 LW |
982 | } |
983 | return 0; | |
984 | } | |
985 | ||
986 | int | |
864dbfa3 | 987 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 988 | { |
3280af22 | 989 | PL_sub_generation++; |
463ee0b2 LW |
990 | return 0; |
991 | } | |
992 | ||
993 | int | |
864dbfa3 | 994 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 995 | { |
a0d0e21e | 996 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 997 | PL_amagic_generation++; |
463ee0b2 | 998 | |
a0d0e21e LW |
999 | return 0; |
1000 | } | |
463ee0b2 | 1001 | |
946ec16e | 1002 | int |
864dbfa3 | 1003 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1004 | { |
1005 | HV *hv = (HV*)LvTARG(sv); | |
1006 | HE *entry; | |
1007 | I32 i = 0; | |
1008 | ||
1009 | if (hv) { | |
1010 | (void) hv_iterinit(hv); | |
33c27489 | 1011 | if (! SvTIED_mg((SV*)hv, 'P')) |
6ff81951 GS |
1012 | i = HvKEYS(hv); |
1013 | else { | |
1014 | /*SUPPRESS 560*/ | |
1015 | while (entry = hv_iternext(hv)) { | |
1016 | i++; | |
1017 | } | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | sv_setiv(sv, (IV)i); | |
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | int | |
864dbfa3 | 1026 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1027 | { |
1028 | if (LvTARG(sv)) { | |
1029 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1030 | } |
1031 | return 0; | |
93965878 | 1032 | } |
946ec16e | 1033 | |
e336de0d | 1034 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1035 | STATIC int |
cea2e8a9 | 1036 | S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
a0d0e21e LW |
1037 | { |
1038 | dSP; | |
463ee0b2 | 1039 | |
924508f0 GS |
1040 | PUSHMARK(SP); |
1041 | EXTEND(SP, n); | |
33c27489 | 1042 | PUSHs(SvTIED_obj(sv, mg)); |
93965878 NIS |
1043 | if (n > 1) { |
1044 | if (mg->mg_ptr) { | |
565764a8 | 1045 | if (mg->mg_len >= 0) |
79cb57f6 | 1046 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1047 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1048 | PUSHs((SV*)mg->mg_ptr); |
1049 | } | |
1050 | else if (mg->mg_type == 'p') { | |
565764a8 | 1051 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1052 | } |
1053 | } | |
1054 | if (n > 2) { | |
1055 | PUSHs(val); | |
88e89b8a | 1056 | } |
463ee0b2 LW |
1057 | PUTBACK; |
1058 | ||
864dbfa3 | 1059 | return call_method(meth, flags); |
946ec16e | 1060 | } |
1061 | ||
76e3520e | 1062 | STATIC int |
cea2e8a9 | 1063 | S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth) |
a0d0e21e LW |
1064 | { |
1065 | dSP; | |
463ee0b2 | 1066 | |
a0d0e21e LW |
1067 | ENTER; |
1068 | SAVETMPS; | |
e788e7d3 | 1069 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1070 | |
33c27489 | 1071 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1072 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1073 | } |
463ee0b2 | 1074 | |
d3acc0f7 | 1075 | POPSTACK; |
a0d0e21e LW |
1076 | FREETMPS; |
1077 | LEAVE; | |
1078 | return 0; | |
1079 | } | |
463ee0b2 | 1080 | |
a0d0e21e | 1081 | int |
864dbfa3 | 1082 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1083 | { |
1084 | magic_methpack(sv,mg,"FETCH"); | |
1085 | if (mg->mg_ptr) | |
1086 | mg->mg_flags |= MGf_GSKIP; | |
463ee0b2 LW |
1087 | return 0; |
1088 | } | |
1089 | ||
1090 | int | |
864dbfa3 | 1091 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d GS |
1092 | { |
1093 | dSP; | |
a60c0954 | 1094 | ENTER; |
e788e7d3 | 1095 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1096 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1097 | POPSTACK; |
a60c0954 | 1098 | LEAVE; |
463ee0b2 LW |
1099 | return 0; |
1100 | } | |
1101 | ||
1102 | int | |
864dbfa3 | 1103 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1104 | { |
a0d0e21e LW |
1105 | return magic_methpack(sv,mg,"DELETE"); |
1106 | } | |
463ee0b2 | 1107 | |
93965878 NIS |
1108 | |
1109 | U32 | |
864dbfa3 | 1110 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
93965878 | 1111 | { |
e336de0d | 1112 | dSP; |
93965878 NIS |
1113 | U32 retval = 0; |
1114 | ||
1115 | ENTER; | |
1116 | SAVETMPS; | |
e788e7d3 | 1117 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1118 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1119 | sv = *PL_stack_sp--; |
a60c0954 | 1120 | retval = (U32) SvIV(sv)-1; |
93965878 | 1121 | } |
d3acc0f7 | 1122 | POPSTACK; |
93965878 NIS |
1123 | FREETMPS; |
1124 | LEAVE; | |
1125 | return retval; | |
1126 | } | |
1127 | ||
cea2e8a9 GS |
1128 | int |
1129 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e LW |
1130 | { |
1131 | dSP; | |
463ee0b2 | 1132 | |
e336de0d | 1133 | ENTER; |
e788e7d3 | 1134 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1135 | PUSHMARK(SP); |
33c27489 | 1136 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1137 | PUTBACK; |
864dbfa3 | 1138 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1139 | POPSTACK; |
a60c0954 | 1140 | LEAVE; |
463ee0b2 LW |
1141 | return 0; |
1142 | } | |
1143 | ||
1144 | int | |
864dbfa3 | 1145 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1146 | { |
463ee0b2 | 1147 | dSP; |
dff6d3cd | 1148 | const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1149 | |
1150 | ENTER; | |
a0d0e21e | 1151 | SAVETMPS; |
e788e7d3 | 1152 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1153 | PUSHMARK(SP); |
1154 | EXTEND(SP, 2); | |
33c27489 | 1155 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1156 | if (SvOK(key)) |
1157 | PUSHs(key); | |
1158 | PUTBACK; | |
1159 | ||
864dbfa3 | 1160 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1161 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1162 | |
d3acc0f7 | 1163 | POPSTACK; |
a0d0e21e LW |
1164 | FREETMPS; |
1165 | LEAVE; | |
79072805 LW |
1166 | return 0; |
1167 | } | |
1168 | ||
1169 | int | |
864dbfa3 | 1170 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1171 | { |
1172 | return magic_methpack(sv,mg,"EXISTS"); | |
1173 | } | |
1174 | ||
1175 | int | |
864dbfa3 | 1176 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1177 | { |
11343788 | 1178 | dTHR; |
79072805 LW |
1179 | OP *o; |
1180 | I32 i; | |
1181 | GV* gv; | |
1182 | SV** svp; | |
2d8e6c8d | 1183 | STRLEN n_a; |
79072805 | 1184 | |
3280af22 | 1185 | gv = PL_DBline; |
79072805 | 1186 | i = SvTRUE(sv); |
188ea221 | 1187 | svp = av_fetch(GvAV(gv), |
2d8e6c8d | 1188 | atoi(MgPV(mg,n_a)), FALSE); |
57b2e452 | 1189 | if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp)))) |
93a17b20 | 1190 | o->op_private = i; |
0453d815 PM |
1191 | else if (ckWARN_d(WARN_INTERNAL)) |
1192 | Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n"); | |
79072805 LW |
1193 | return 0; |
1194 | } | |
1195 | ||
1196 | int | |
864dbfa3 | 1197 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1198 | { |
0f15f207 | 1199 | dTHR; |
3280af22 | 1200 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 LW |
1201 | return 0; |
1202 | } | |
1203 | ||
1204 | int | |
864dbfa3 | 1205 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1206 | { |
0f15f207 | 1207 | dTHR; |
3280af22 | 1208 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e LW |
1209 | return 0; |
1210 | } | |
1211 | ||
1212 | int | |
864dbfa3 | 1213 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1214 | { |
1215 | SV* lsv = LvTARG(sv); | |
1216 | ||
1217 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { | |
1218 | mg = mg_find(lsv, 'g'); | |
565764a8 | 1219 | if (mg && mg->mg_len >= 0) { |
0f15f207 | 1220 | dTHR; |
a0ed51b3 LW |
1221 | I32 i = mg->mg_len; |
1222 | if (IN_UTF8) | |
1223 | sv_pos_b2u(lsv, &i); | |
1224 | sv_setiv(sv, i + PL_curcop->cop_arybase); | |
a0d0e21e LW |
1225 | return 0; |
1226 | } | |
1227 | } | |
1228 | (void)SvOK_off(sv); | |
1229 | return 0; | |
1230 | } | |
1231 | ||
1232 | int | |
864dbfa3 | 1233 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1234 | { |
1235 | SV* lsv = LvTARG(sv); | |
1236 | SSize_t pos; | |
1237 | STRLEN len; | |
a0ed51b3 | 1238 | STRLEN ulen; |
c485e607 | 1239 | dTHR; |
a0d0e21e LW |
1240 | |
1241 | mg = 0; | |
1242 | ||
1243 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) | |
1244 | mg = mg_find(lsv, 'g'); | |
1245 | if (!mg) { | |
1246 | if (!SvOK(sv)) | |
1247 | return 0; | |
1248 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); | |
1249 | mg = mg_find(lsv, 'g'); | |
1250 | } | |
1251 | else if (!SvOK(sv)) { | |
565764a8 | 1252 | mg->mg_len = -1; |
a0d0e21e LW |
1253 | return 0; |
1254 | } | |
1255 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1256 | ||
c485e607 | 1257 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 LW |
1258 | |
1259 | if (IN_UTF8) { | |
1260 | ulen = sv_len_utf8(lsv); | |
1261 | if (ulen) | |
1262 | len = ulen; | |
1263 | else | |
1264 | ulen = 0; | |
1265 | } | |
1266 | ||
a0d0e21e LW |
1267 | if (pos < 0) { |
1268 | pos += len; | |
1269 | if (pos < 0) | |
1270 | pos = 0; | |
1271 | } | |
1272 | else if (pos > len) | |
1273 | pos = len; | |
a0ed51b3 LW |
1274 | |
1275 | if (ulen) { | |
1276 | I32 p = pos; | |
1277 | sv_pos_u2b(lsv, &p, 0); | |
1278 | pos = p; | |
1279 | } | |
1280 | ||
565764a8 | 1281 | mg->mg_len = pos; |
71be2cbc | 1282 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e | 1283 | |
79072805 LW |
1284 | return 0; |
1285 | } | |
1286 | ||
1287 | int | |
864dbfa3 | 1288 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1289 | { |
8646b087 | 1290 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1291 | SvFAKE_off(sv); | |
946ec16e | 1292 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 | 1293 | SvFAKE_on(sv); |
1294 | } | |
1295 | else | |
946ec16e | 1296 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 LW |
1297 | return 0; |
1298 | } | |
1299 | ||
1300 | int | |
864dbfa3 | 1301 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1302 | { |
1303 | register char *s; | |
1304 | GV* gv; | |
2d8e6c8d | 1305 | STRLEN n_a; |
79072805 LW |
1306 | |
1307 | if (!SvOK(sv)) | |
1308 | return 0; | |
2d8e6c8d | 1309 | s = SvPV(sv, n_a); |
79072805 LW |
1310 | if (*s == '*' && s[1]) |
1311 | s++; | |
85e6fe83 | 1312 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
1313 | if (sv == (SV*)gv) |
1314 | return 0; | |
1315 | if (GvGP(sv)) | |
88e89b8a | 1316 | gp_free((GV*)sv); |
79072805 | 1317 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1318 | return 0; |
1319 | } | |
1320 | ||
1321 | int | |
864dbfa3 | 1322 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1323 | { |
1324 | STRLEN len; | |
1325 | SV *lsv = LvTARG(sv); | |
1326 | char *tmps = SvPV(lsv,len); | |
1327 | I32 offs = LvTARGOFF(sv); | |
1328 | I32 rem = LvTARGLEN(sv); | |
1329 | ||
1330 | if (offs > len) | |
1331 | offs = len; | |
1332 | if (rem + offs > len) | |
1333 | rem = len - offs; | |
1334 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
1335 | return 0; | |
1336 | } | |
1337 | ||
1338 | int | |
864dbfa3 | 1339 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1340 | { |
8990e307 LW |
1341 | STRLEN len; |
1342 | char *tmps = SvPV(sv,len); | |
1343 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); | |
79072805 LW |
1344 | return 0; |
1345 | } | |
1346 | ||
1347 | int | |
864dbfa3 | 1348 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1349 | { |
a863c7d1 | 1350 | dTHR; |
565764a8 DL |
1351 | TAINT_IF((mg->mg_len & 1) || |
1352 | (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */ | |
463ee0b2 LW |
1353 | return 0; |
1354 | } | |
1355 | ||
1356 | int | |
864dbfa3 | 1357 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1358 | { |
11343788 | 1359 | dTHR; |
3280af22 NIS |
1360 | if (PL_localizing) { |
1361 | if (PL_localizing == 1) | |
565764a8 | 1362 | mg->mg_len <<= 1; |
748a9306 | 1363 | else |
565764a8 | 1364 | mg->mg_len >>= 1; |
a0d0e21e | 1365 | } |
3280af22 | 1366 | else if (PL_tainted) |
565764a8 | 1367 | mg->mg_len |= 1; |
748a9306 | 1368 | else |
565764a8 | 1369 | mg->mg_len &= ~1; |
463ee0b2 LW |
1370 | return 0; |
1371 | } | |
1372 | ||
1373 | int | |
864dbfa3 | 1374 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1375 | { |
1376 | SV *lsv = LvTARG(sv); | |
6ff81951 GS |
1377 | |
1378 | if (!lsv) { | |
1379 | SvOK_off(sv); | |
1380 | return 0; | |
1381 | } | |
6ff81951 | 1382 | |
81e118e0 | 1383 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 GS |
1384 | return 0; |
1385 | } | |
1386 | ||
1387 | int | |
864dbfa3 | 1388 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1389 | { |
1390 | do_vecset(sv); /* XXX slurp this routine */ | |
1391 | return 0; | |
1392 | } | |
1393 | ||
1394 | int | |
864dbfa3 | 1395 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 1396 | { |
71be2cbc | 1397 | SV *targ = Nullsv; |
5f05dabc | 1398 | if (LvTARGLEN(sv)) { |
68dc0745 | 1399 | if (mg->mg_obj) { |
74e13ce4 GS |
1400 | SV *ahv = LvTARG(sv); |
1401 | if (SvTYPE(ahv) == SVt_PVHV) { | |
1402 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); | |
1403 | if (he) | |
1404 | targ = HeVAL(he); | |
1405 | } | |
1406 | else { | |
1407 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0); | |
1408 | if (svp) | |
1409 | targ = *svp; | |
1410 | } | |
68dc0745 | 1411 | } |
1412 | else { | |
3c78fafa | 1413 | AV* av = (AV*)LvTARG(sv); |
68dc0745 | 1414 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1415 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
1416 | } | |
3280af22 | 1417 | if (targ && targ != &PL_sv_undef) { |
e858de61 | 1418 | dTHR; /* just for SvREFCNT_dec */ |
68dc0745 | 1419 | /* somebody else defined it for us */ |
1420 | SvREFCNT_dec(LvTARG(sv)); | |
1421 | LvTARG(sv) = SvREFCNT_inc(targ); | |
1422 | LvTARGLEN(sv) = 0; | |
1423 | SvREFCNT_dec(mg->mg_obj); | |
1424 | mg->mg_obj = Nullsv; | |
1425 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
1426 | } | |
5f05dabc | 1427 | } |
71be2cbc | 1428 | else |
1429 | targ = LvTARG(sv); | |
3280af22 | 1430 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 1431 | return 0; |
1432 | } | |
1433 | ||
1434 | int | |
864dbfa3 | 1435 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 1436 | { |
1437 | if (LvTARGLEN(sv)) | |
68dc0745 | 1438 | vivify_defelem(sv); |
1439 | if (LvTARG(sv)) { | |
5f05dabc | 1440 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 1441 | SvSETMAGIC(LvTARG(sv)); |
1442 | } | |
5f05dabc | 1443 | return 0; |
1444 | } | |
1445 | ||
71be2cbc | 1446 | void |
864dbfa3 | 1447 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 1448 | { |
e858de61 | 1449 | dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/ |
74e13ce4 GS |
1450 | MAGIC *mg; |
1451 | SV *value = Nullsv; | |
71be2cbc | 1452 | |
68dc0745 | 1453 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y'))) |
71be2cbc | 1454 | return; |
68dc0745 | 1455 | if (mg->mg_obj) { |
74e13ce4 | 1456 | SV *ahv = LvTARG(sv); |
2d8e6c8d | 1457 | STRLEN n_a; |
74e13ce4 | 1458 | if (SvTYPE(ahv) == SVt_PVHV) { |
af7f9c15 | 1459 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 GS |
1460 | if (he) |
1461 | value = HeVAL(he); | |
1462 | } | |
1463 | else { | |
af7f9c15 | 1464 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 GS |
1465 | if (svp) |
1466 | value = *svp; | |
1467 | } | |
3280af22 | 1468 | if (!value || value == &PL_sv_undef) |
cea2e8a9 | 1469 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc | 1470 | } |
68dc0745 | 1471 | else { |
1472 | AV* av = (AV*)LvTARG(sv); | |
5aabfad6 | 1473 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 | 1474 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1475 | else { | |
1476 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); | |
3280af22 | 1477 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 1478 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 1479 | } |
1480 | } | |
3e3baf6d | 1481 | (void)SvREFCNT_inc(value); |
68dc0745 | 1482 | SvREFCNT_dec(LvTARG(sv)); |
1483 | LvTARG(sv) = value; | |
71be2cbc | 1484 | LvTARGLEN(sv) = 0; |
68dc0745 | 1485 | SvREFCNT_dec(mg->mg_obj); |
1486 | mg->mg_obj = Nullsv; | |
1487 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
5f05dabc | 1488 | } |
1489 | ||
1490 | int | |
864dbfa3 | 1491 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 GS |
1492 | { |
1493 | AV *av = (AV*)mg->mg_obj; | |
1494 | SV **svp = AvARRAY(av); | |
1495 | I32 i = AvFILLp(av); | |
1496 | while (i >= 0) { | |
1497 | if (svp[i] && svp[i] != &PL_sv_undef) { | |
1498 | if (!SvWEAKREF(svp[i])) | |
cea2e8a9 | 1499 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 GS |
1500 | /* XXX Should we check that it hasn't changed? */ |
1501 | SvRV(svp[i]) = 0; | |
1502 | SvOK_off(svp[i]); | |
1503 | SvWEAKREF_off(svp[i]); | |
1504 | svp[i] = &PL_sv_undef; | |
1505 | } | |
1506 | i--; | |
1507 | } | |
1508 | return 0; | |
1509 | } | |
1510 | ||
1511 | int | |
864dbfa3 | 1512 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 1513 | { |
565764a8 | 1514 | mg->mg_len = -1; |
c6496cc7 | 1515 | SvSCREAM_off(sv); |
93a17b20 LW |
1516 | return 0; |
1517 | } | |
1518 | ||
1519 | int | |
864dbfa3 | 1520 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1521 | { |
463ee0b2 | 1522 | sv_unmagic(sv, 'B'); |
79072805 LW |
1523 | SvVALID_off(sv); |
1524 | return 0; | |
1525 | } | |
1526 | ||
1527 | int | |
864dbfa3 | 1528 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 1529 | { |
1530 | sv_unmagic(sv, 'f'); | |
1531 | SvCOMPILED_off(sv); | |
1532 | return 0; | |
1533 | } | |
1534 | ||
1535 | int | |
864dbfa3 | 1536 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1537 | { |
1538 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
1539 | ||
1540 | if (uf && uf->uf_set) | |
1541 | (*uf->uf_set)(uf->uf_index, sv); | |
1542 | return 0; | |
1543 | } | |
1544 | ||
c277df42 | 1545 | int |
864dbfa3 | 1546 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 IZ |
1547 | { |
1548 | regexp *re = (regexp *)mg->mg_obj; | |
1549 | ReREFCNT_dec(re); | |
1550 | return 0; | |
1551 | } | |
1552 | ||
7a4c00b4 | 1553 | #ifdef USE_LOCALE_COLLATE |
79072805 | 1554 | int |
864dbfa3 | 1555 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 1556 | { |
1557 | /* | |
838b5b74 | 1558 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 1559 | * and vanished with a faint plop. |
1560 | */ | |
7a4c00b4 | 1561 | if (mg->mg_ptr) { |
1562 | Safefree(mg->mg_ptr); | |
1563 | mg->mg_ptr = NULL; | |
565764a8 | 1564 | mg->mg_len = -1; |
7a4c00b4 | 1565 | } |
bbce6d69 | 1566 | return 0; |
1567 | } | |
7a4c00b4 | 1568 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 1569 | |
1570 | int | |
864dbfa3 | 1571 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1572 | { |
11343788 | 1573 | dTHR; |
79072805 LW |
1574 | register char *s; |
1575 | I32 i; | |
8990e307 | 1576 | STRLEN len; |
79072805 | 1577 | switch (*mg->mg_ptr) { |
748a9306 | 1578 | case '\001': /* ^A */ |
3280af22 | 1579 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 1580 | break; |
49460fe6 NIS |
1581 | case '\003': /* ^C */ |
1582 | PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1583 | break; | |
1584 | ||
79072805 | 1585 | case '\004': /* ^D */ |
3280af22 | 1586 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 LW |
1587 | DEBUG_x(dump_all()); |
1588 | break; | |
28f23441 | 1589 | case '\005': /* ^E */ |
cd39f2b6 JH |
1590 | #ifdef MACOS_TRADITIONAL |
1591 | gLastMacOSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
28f23441 | 1592 | #else |
cd39f2b6 JH |
1593 | # ifdef VMS |
1594 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
048c1ddf | 1595 | # else |
cd39f2b6 JH |
1596 | # ifdef WIN32 |
1597 | SetLastError( SvIV(sv) ); | |
1598 | # else | |
1599 | # ifndef OS2 | |
f86702cc | 1600 | /* will anyone ever use this? */ |
1601 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); | |
cd39f2b6 | 1602 | # endif |
048c1ddf IZ |
1603 | # endif |
1604 | # endif | |
22fae026 | 1605 | #endif |
28f23441 | 1606 | break; |
79072805 | 1607 | case '\006': /* ^F */ |
3280af22 | 1608 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 1609 | break; |
a0d0e21e | 1610 | case '\010': /* ^H */ |
3280af22 | 1611 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e | 1612 | break; |
9d116dd7 | 1613 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
1614 | if (PL_inplace) |
1615 | Safefree(PL_inplace); | |
79072805 | 1616 | if (SvOK(sv)) |
2d8e6c8d | 1617 | PL_inplace = savepv(SvPV(sv,len)); |
79072805 | 1618 | else |
3280af22 | 1619 | PL_inplace = Nullch; |
79072805 | 1620 | break; |
28f23441 | 1621 | case '\017': /* ^O */ |
3280af22 NIS |
1622 | if (PL_osname) |
1623 | Safefree(PL_osname); | |
28f23441 | 1624 | if (SvOK(sv)) |
2d8e6c8d | 1625 | PL_osname = savepv(SvPV(sv,len)); |
28f23441 | 1626 | else |
3280af22 | 1627 | PL_osname = Nullch; |
28f23441 | 1628 | break; |
79072805 | 1629 | case '\020': /* ^P */ |
3280af22 | 1630 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1ee4443e IZ |
1631 | if (PL_perldb && !PL_DBsingle) |
1632 | init_debugger(); | |
79072805 LW |
1633 | break; |
1634 | case '\024': /* ^T */ | |
88e89b8a | 1635 | #ifdef BIG_TIME |
6b88bc9c | 1636 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 1637 | #else |
3280af22 | 1638 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a | 1639 | #endif |
79072805 | 1640 | break; |
4438c4b7 JH |
1641 | case '\027': /* ^W & $^Warnings */ |
1642 | if (*(mg->mg_ptr+1) == '\0') { | |
1643 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
1644 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1645 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) | |
0453d815 | 1646 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 1647 | } |
599cee73 | 1648 | } |
4438c4b7 JH |
1649 | else if (strEQ(mg->mg_ptr, "\027arnings")) { |
1650 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
1651 | if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) { | |
1652 | PL_compiling.cop_warnings = WARN_ALL; | |
1653 | PL_dowarn |= G_WARN_ONCE ; | |
1654 | } | |
1655 | else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize)) | |
1656 | PL_compiling.cop_warnings = WARN_NONE; | |
1657 | else { | |
1658 | if (specialWARN(PL_compiling.cop_warnings)) | |
1659 | PL_compiling.cop_warnings = newSVsv(sv) ; | |
1660 | else | |
1661 | sv_setsv(PL_compiling.cop_warnings, sv); | |
1662 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) | |
1663 | PL_dowarn |= G_WARN_ONCE ; | |
1664 | } | |
1665 | } | |
971a9dd3 | 1666 | } |
79072805 LW |
1667 | break; |
1668 | case '.': | |
3280af22 NIS |
1669 | if (PL_localizing) { |
1670 | if (PL_localizing == 1) | |
7766f137 | 1671 | SAVESPTR(PL_last_in_gv); |
748a9306 | 1672 | } |
3280af22 NIS |
1673 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
1674 | IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv); | |
79072805 LW |
1675 | break; |
1676 | case '^': | |
3280af22 | 1677 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 1678 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 1679 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
1680 | break; |
1681 | case '~': | |
3280af22 | 1682 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 1683 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 1684 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
1685 | break; |
1686 | case '=': | |
3280af22 | 1687 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1688 | break; |
1689 | case '-': | |
3280af22 NIS |
1690 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1691 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
1692 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
1693 | break; |
1694 | case '%': | |
3280af22 | 1695 | IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1696 | break; |
1697 | case '|': | |
4b65379b | 1698 | { |
3280af22 | 1699 | IO *io = GvIOp(PL_defoutgv); |
4b65379b CS |
1700 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
1701 | IoFLAGS(io) &= ~IOf_FLUSH; | |
1702 | else { | |
1703 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
1704 | PerlIO *ofp = IoOFP(io); | |
1705 | if (ofp) | |
1706 | (void)PerlIO_flush(ofp); | |
1707 | IoFLAGS(io) |= IOf_FLUSH; | |
1708 | } | |
1709 | } | |
79072805 LW |
1710 | } |
1711 | break; | |
1712 | case '*': | |
463ee0b2 | 1713 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
3280af22 | 1714 | PL_multiline = (i != 0); |
79072805 LW |
1715 | break; |
1716 | case '/': | |
3280af22 NIS |
1717 | SvREFCNT_dec(PL_nrs); |
1718 | PL_nrs = newSVsv(sv); | |
1719 | SvREFCNT_dec(PL_rs); | |
1720 | PL_rs = SvREFCNT_inc(PL_nrs); | |
79072805 LW |
1721 | break; |
1722 | case '\\': | |
3280af22 NIS |
1723 | if (PL_ors) |
1724 | Safefree(PL_ors); | |
009c130f GS |
1725 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
1726 | s = SvPV(sv,PL_orslen); | |
1727 | PL_ors = savepvn(s,PL_orslen); | |
1728 | } | |
e3c19b7b | 1729 | else { |
3280af22 NIS |
1730 | PL_ors = Nullch; |
1731 | PL_orslen = 0; | |
e3c19b7b | 1732 | } |
79072805 LW |
1733 | break; |
1734 | case ',': | |
3280af22 NIS |
1735 | if (PL_ofs) |
1736 | Safefree(PL_ofs); | |
1737 | PL_ofs = savepv(SvPV(sv, PL_ofslen)); | |
79072805 LW |
1738 | break; |
1739 | case '#': | |
3280af22 NIS |
1740 | if (PL_ofmt) |
1741 | Safefree(PL_ofmt); | |
2d8e6c8d | 1742 | PL_ofmt = savepv(SvPV(sv,len)); |
79072805 LW |
1743 | break; |
1744 | case '[': | |
3280af22 | 1745 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1746 | break; |
1747 | case '?': | |
ff0cee69 | 1748 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
1749 | if (PL_localizing == 2) { |
1750 | PL_statusvalue = LvTARGOFF(sv); | |
1751 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 1752 | } |
1753 | else | |
1754 | #endif | |
1755 | #ifdef VMSISH_STATUS | |
1756 | if (VMSISH_STATUS) | |
1757 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); | |
1758 | else | |
1759 | #endif | |
1760 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
79072805 LW |
1761 | break; |
1762 | case '!': | |
78987ded | 1763 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
f86702cc | 1764 | (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno); |
79072805 LW |
1765 | break; |
1766 | case '<': | |
3280af22 NIS |
1767 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1768 | if (PL_delaymagic) { | |
1769 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
1770 | break; /* don't do magic till later */ |
1771 | } | |
1772 | #ifdef HAS_SETRUID | |
b28d0864 | 1773 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
1774 | #else |
1775 | #ifdef HAS_SETREUID | |
3280af22 | 1776 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 1777 | #else |
85e6fe83 | 1778 | #ifdef HAS_SETRESUID |
b28d0864 | 1779 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 1780 | #else |
b28d0864 NIS |
1781 | if (PL_uid == PL_euid) /* special case $< = $> */ |
1782 | (void)PerlProc_setuid(PL_uid); | |
a0d0e21e | 1783 | else { |
d8eceb89 | 1784 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 1785 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 1786 | } |
79072805 LW |
1787 | #endif |
1788 | #endif | |
85e6fe83 | 1789 | #endif |
d8eceb89 | 1790 | PL_uid = PerlProc_getuid(); |
3280af22 | 1791 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1792 | break; |
1793 | case '>': | |
3280af22 NIS |
1794 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1795 | if (PL_delaymagic) { | |
1796 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
1797 | break; /* don't do magic till later */ |
1798 | } | |
1799 | #ifdef HAS_SETEUID | |
3280af22 | 1800 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
1801 | #else |
1802 | #ifdef HAS_SETREUID | |
b28d0864 | 1803 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
1804 | #else |
1805 | #ifdef HAS_SETRESUID | |
6b88bc9c | 1806 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 1807 | #else |
b28d0864 NIS |
1808 | if (PL_euid == PL_uid) /* special case $> = $< */ |
1809 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 1810 | else { |
e8ee3774 | 1811 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 1812 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 1813 | } |
79072805 LW |
1814 | #endif |
1815 | #endif | |
85e6fe83 | 1816 | #endif |
d8eceb89 | 1817 | PL_euid = PerlProc_geteuid(); |
3280af22 | 1818 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1819 | break; |
1820 | case '(': | |
3280af22 NIS |
1821 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1822 | if (PL_delaymagic) { | |
1823 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
1824 | break; /* don't do magic till later */ |
1825 | } | |
1826 | #ifdef HAS_SETRGID | |
b28d0864 | 1827 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
1828 | #else |
1829 | #ifdef HAS_SETREGID | |
3280af22 | 1830 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
1831 | #else |
1832 | #ifdef HAS_SETRESGID | |
b28d0864 | 1833 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 1834 | #else |
b28d0864 NIS |
1835 | if (PL_gid == PL_egid) /* special case $( = $) */ |
1836 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 1837 | else { |
d8eceb89 | 1838 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 1839 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 1840 | } |
79072805 LW |
1841 | #endif |
1842 | #endif | |
85e6fe83 | 1843 | #endif |
d8eceb89 | 1844 | PL_gid = PerlProc_getgid(); |
3280af22 | 1845 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1846 | break; |
1847 | case ')': | |
5cd24f17 | 1848 | #ifdef HAS_SETGROUPS |
1849 | { | |
2d8e6c8d | 1850 | char *p = SvPV(sv, len); |
5cd24f17 | 1851 | Groups_t gary[NGROUPS]; |
1852 | ||
5cd24f17 | 1853 | while (isSPACE(*p)) |
1854 | ++p; | |
2d4389e4 | 1855 | PL_egid = Atol(p); |
5cd24f17 | 1856 | for (i = 0; i < NGROUPS; ++i) { |
1857 | while (*p && !isSPACE(*p)) | |
1858 | ++p; | |
1859 | while (isSPACE(*p)) | |
1860 | ++p; | |
1861 | if (!*p) | |
1862 | break; | |
2d4389e4 | 1863 | gary[i] = Atol(p); |
5cd24f17 | 1864 | } |
8cc95fdb | 1865 | if (i) |
1866 | (void)setgroups(i, gary); | |
5cd24f17 | 1867 | } |
1868 | #else /* HAS_SETGROUPS */ | |
b28d0864 | 1869 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 | 1870 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
1871 | if (PL_delaymagic) { |
1872 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
1873 | break; /* don't do magic till later */ |
1874 | } | |
1875 | #ifdef HAS_SETEGID | |
3280af22 | 1876 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
1877 | #else |
1878 | #ifdef HAS_SETREGID | |
b28d0864 | 1879 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
1880 | #else |
1881 | #ifdef HAS_SETRESGID | |
b28d0864 | 1882 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 1883 | #else |
b28d0864 NIS |
1884 | if (PL_egid == PL_gid) /* special case $) = $( */ |
1885 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 1886 | else { |
d8eceb89 | 1887 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 1888 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 1889 | } |
79072805 LW |
1890 | #endif |
1891 | #endif | |
85e6fe83 | 1892 | #endif |
d8eceb89 | 1893 | PL_egid = PerlProc_getegid(); |
3280af22 | 1894 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1895 | break; |
1896 | case ':': | |
2d8e6c8d | 1897 | PL_chopset = SvPV_force(sv,len); |
79072805 | 1898 | break; |
cd39f2b6 | 1899 | #ifndef MACOS_TRADITIONAL |
79072805 | 1900 | case '0': |
3280af22 NIS |
1901 | if (!PL_origalen) { |
1902 | s = PL_origargv[0]; | |
79072805 LW |
1903 | s += strlen(s); |
1904 | /* See if all the arguments are contiguous in memory */ | |
3280af22 NIS |
1905 | for (i = 1; i < PL_origargc; i++) { |
1906 | if (PL_origargv[i] == s + 1 | |
fb73857a | 1907 | #ifdef OS2 |
6b88bc9c | 1908 | || PL_origargv[i] == s + 2 |
fb73857a | 1909 | #endif |
1910 | ) | |
379c4362 GS |
1911 | { |
1912 | ++s; | |
1913 | s += strlen(s); /* this one is ok too */ | |
1914 | } | |
fb73857a | 1915 | else |
1916 | break; | |
79072805 | 1917 | } |
bbce6d69 | 1918 | /* can grab env area too? */ |
3280af22 | 1919 | if (PL_origenviron && (PL_origenviron[0] == s + 1 |
fb73857a | 1920 | #ifdef OS2 |
6b88bc9c | 1921 | || (PL_origenviron[0] == s + 9 && (s += 8)) |
fb73857a | 1922 | #endif |
1923 | )) { | |
66b1d557 | 1924 | my_setenv("NoNe SuCh", Nullch); |
79072805 | 1925 | /* force copy of environment */ |
3280af22 | 1926 | for (i = 0; PL_origenviron[i]; i++) |
379c4362 GS |
1927 | if (PL_origenviron[i] == s + 1) { |
1928 | ++s; | |
1929 | s += strlen(s); | |
1930 | } | |
fb73857a | 1931 | else |
1932 | break; | |
79072805 | 1933 | } |
3280af22 | 1934 | PL_origalen = s - PL_origargv[0]; |
79072805 | 1935 | } |
a0d0e21e | 1936 | s = SvPV_force(sv,len); |
8990e307 | 1937 | i = len; |
3280af22 NIS |
1938 | if (i >= PL_origalen) { |
1939 | i = PL_origalen; | |
fb73857a | 1940 | /* don't allow system to limit $0 seen by script */ |
1941 | /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */ | |
3280af22 NIS |
1942 | Copy(s, PL_origargv[0], i, char); |
1943 | s = PL_origargv[0]+i; | |
fb73857a | 1944 | *s = '\0'; |
79072805 LW |
1945 | } |
1946 | else { | |
3280af22 NIS |
1947 | Copy(s, PL_origargv[0], i, char); |
1948 | s = PL_origargv[0]+i; | |
79072805 | 1949 | *s++ = '\0'; |
3280af22 | 1950 | while (++i < PL_origalen) |
8990e307 | 1951 | *s++ = ' '; |
3280af22 NIS |
1952 | s = PL_origargv[0]+i; |
1953 | for (i = 1; i < PL_origargc; i++) | |
1954 | PL_origargv[i] = Nullch; | |
79072805 LW |
1955 | } |
1956 | break; | |
cd39f2b6 | 1957 | #endif |
a863c7d1 MB |
1958 | #ifdef USE_THREADS |
1959 | case '@': | |
38a03e6e | 1960 | sv_setsv(thr->errsv, sv); |
a863c7d1 MB |
1961 | break; |
1962 | #endif /* USE_THREADS */ | |
79072805 LW |
1963 | } |
1964 | return 0; | |
1965 | } | |
1966 | ||
f93b4edd MB |
1967 | #ifdef USE_THREADS |
1968 | int | |
864dbfa3 | 1969 | Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg) |
f93b4edd MB |
1970 | { |
1971 | dTHR; | |
b900a521 JH |
1972 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1973 | "0x%"UVxf": magic_mutexfree 0x%"UVxf"\n", | |
1974 | PTR2UV(thr), PTR2UV(sv));) | |
f93b4edd | 1975 | if (MgOWNER(mg)) |
cea2e8a9 | 1976 | Perl_croak(aTHX_ "panic: magic_mutexfree"); |
f93b4edd MB |
1977 | MUTEX_DESTROY(MgMUTEXP(mg)); |
1978 | COND_DESTROY(MgCONDP(mg)); | |
1979 | return 0; | |
1980 | } | |
1981 | #endif /* USE_THREADS */ | |
1982 | ||
79072805 | 1983 | I32 |
864dbfa3 | 1984 | Perl_whichsig(pTHX_ char *sig) |
79072805 LW |
1985 | { |
1986 | register char **sigv; | |
1987 | ||
22c35a8c | 1988 | for (sigv = PL_sig_name+1; *sigv; sigv++) |
79072805 | 1989 | if (strEQ(sig,*sigv)) |
22c35a8c | 1990 | return PL_sig_num[sigv - PL_sig_name]; |
79072805 LW |
1991 | #ifdef SIGCLD |
1992 | if (strEQ(sig,"CHLD")) | |
1993 | return SIGCLD; | |
1994 | #endif | |
1995 | #ifdef SIGCHLD | |
1996 | if (strEQ(sig,"CLD")) | |
1997 | return SIGCHLD; | |
1998 | #endif | |
1999 | return 0; | |
2000 | } | |
2001 | ||
84902520 TB |
2002 | static SV* sig_sv; |
2003 | ||
ecfc5424 | 2004 | Signal_t |
cea2e8a9 | 2005 | Perl_sighandler(int sig) |
79072805 | 2006 | { |
cea2e8a9 | 2007 | dTHX; |
79072805 | 2008 | dSP; |
00d579c5 | 2009 | GV *gv = Nullgv; |
a0d0e21e | 2010 | HV *st; |
3280af22 | 2011 | SV *sv, *tSv = PL_Sv; |
00d579c5 | 2012 | CV *cv = Nullcv; |
533c011a | 2013 | OP *myop = PL_op; |
84902520 | 2014 | U32 flags = 0; |
3280af22 NIS |
2015 | I32 o_save_i = PL_savestack_ix, type; |
2016 | XPV *tXpv = PL_Xpv; | |
84902520 | 2017 | |
3280af22 | 2018 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2019 | flags |= 1; |
3280af22 | 2020 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2021 | flags |= 4; |
3280af22 | 2022 | if (PL_retstack_ix < PL_retstack_max - 2) |
84902520 | 2023 | flags |= 8; |
3280af22 | 2024 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2025 | flags |= 16; |
2026 | ||
22c35a8c | 2027 | if (!PL_psig_ptr[sig]) |
cea2e8a9 | 2028 | Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n", |
22c35a8c | 2029 | PL_sig_name[sig]); |
ff0cee69 | 2030 | |
84902520 TB |
2031 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2032 | infinity, so we fix 4 (in fact 5): */ | |
2033 | if (flags & 1) { | |
3280af22 NIS |
2034 | PL_savestack_ix += 5; /* Protect save in progress. */ |
2035 | o_save_i = PL_savestack_ix; | |
c76ac1ee | 2036 | SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags); |
84902520 TB |
2037 | } |
2038 | if (flags & 4) | |
3280af22 | 2039 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2040 | if (flags & 8) { |
3280af22 NIS |
2041 | PL_retstack_ix++; |
2042 | PL_retstack[PL_retstack_ix] = NULL; | |
84902520 TB |
2043 | } |
2044 | if (flags & 16) | |
3280af22 | 2045 | PL_scopestack_ix += 1; |
84902520 | 2046 | /* sv_2cv is too complicated, try a simpler variant first: */ |
22c35a8c | 2047 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 | 2048 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c | 2049 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 | 2050 | |
a0d0e21e | 2051 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2052 | if (ckWARN(WARN_SIGNAL)) |
cea2e8a9 | 2053 | Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2054 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2055 | : ((cv && CvGV(cv)) |
2056 | ? GvENAME(CvGV(cv)) | |
2057 | : "__ANON__"))); | |
2058 | goto cleanup; | |
79072805 LW |
2059 | } |
2060 | ||
22c35a8c GS |
2061 | if(PL_psig_name[sig]) { |
2062 | sv = SvREFCNT_inc(PL_psig_name[sig]); | |
84902520 TB |
2063 | flags |= 64; |
2064 | sig_sv = sv; | |
2065 | } else { | |
ff0cee69 | 2066 | sv = sv_newmortal(); |
22c35a8c | 2067 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2068 | } |
e336de0d | 2069 | |
e788e7d3 | 2070 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2071 | PUSHMARK(SP); |
79072805 | 2072 | PUSHs(sv); |
79072805 | 2073 | PUTBACK; |
a0d0e21e | 2074 | |
864dbfa3 | 2075 | call_sv((SV*)cv, G_DISCARD); |
79072805 | 2076 | |
d3acc0f7 | 2077 | POPSTACK; |
00d579c5 | 2078 | cleanup: |
84902520 | 2079 | if (flags & 1) |
3280af22 | 2080 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
84902520 | 2081 | if (flags & 4) |
3280af22 | 2082 | PL_markstack_ptr--; |
84902520 | 2083 | if (flags & 8) |
3280af22 | 2084 | PL_retstack_ix--; |
84902520 | 2085 | if (flags & 16) |
3280af22 | 2086 | PL_scopestack_ix -= 1; |
84902520 TB |
2087 | if (flags & 64) |
2088 | SvREFCNT_dec(sv); | |
533c011a | 2089 | PL_op = myop; /* Apparently not needed... */ |
84902520 | 2090 | |
3280af22 NIS |
2091 | PL_Sv = tSv; /* Restore global temporaries. */ |
2092 | PL_Xpv = tXpv; | |
79072805 LW |
2093 | return; |
2094 | } | |
4e35701f NIS |
2095 | |
2096 | ||
51371543 | 2097 | #ifdef PERL_OBJECT |
51371543 GS |
2098 | #include "XSUB.h" |
2099 | #endif | |
2100 | ||
2101 | static void | |
2102 | restore_magic(pTHXo_ void *p) | |
2103 | { | |
2104 | dTHR; | |
2105 | MGS* mgs = SSPTR((I32)p, MGS*); | |
2106 | SV* sv = mgs->mgs_sv; | |
2107 | ||
2108 | if (!sv) | |
2109 | return; | |
2110 | ||
2111 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2112 | { | |
2113 | if (mgs->mgs_flags) | |
2114 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2115 | else | |
2116 | mg_magical(sv); | |
2117 | if (SvGMAGICAL(sv)) | |
2118 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
2119 | } | |
2120 | ||
2121 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2122 | ||
2123 | /* If we're still on top of the stack, pop us off. (That condition | |
2124 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2125 | * if it's being called via leave_scope.) | |
2126 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2127 | * may leave alloc gunk on the savestack, and some code | |
2128 | * (e.g. sighandler) doesn't expect that... | |
2129 | */ | |
2130 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2131 | { | |
2132 | I32 popval = SSPOPINT; | |
c76ac1ee | 2133 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2134 | PL_savestack_ix -= 2; |
2135 | popval = SSPOPINT; | |
2136 | assert(popval == SAVEt_ALLOC); | |
2137 | popval = SSPOPINT; | |
2138 | PL_savestack_ix -= popval; | |
2139 | } | |
2140 | ||
2141 | } | |
2142 | ||
2143 | static void | |
2144 | unwind_handler_stack(pTHXo_ void *p) | |
2145 | { | |
2146 | dTHR; | |
2147 | U32 flags = *(U32*)p; | |
2148 | ||
2149 | if (flags & 1) | |
2150 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
2151 | /* cxstack_ix-- Not needed, die already unwound it. */ | |
2152 | if (flags & 64) | |
2153 | SvREFCNT_dec(sig_sv); | |
2154 | } |