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); |
785fb66b | 668 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid); |
79072805 LW |
669 | goto add_groups; |
670 | case ')': | |
3280af22 | 671 | sv_setiv(sv, (IV)PL_egid); |
785fb66b | 672 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid); |
79072805 | 673 | add_groups: |
79072805 | 674 | #ifdef HAS_GETGROUPS |
79072805 | 675 | { |
a0d0e21e | 676 | Groups_t gary[NGROUPS]; |
79072805 | 677 | i = getgroups(NGROUPS,gary); |
46fc3d4c | 678 | while (--i >= 0) |
785fb66b | 679 | Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]); |
79072805 LW |
680 | } |
681 | #endif | |
29355cf7 | 682 | SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
683 | break; |
684 | case '*': | |
685 | break; | |
cd39f2b6 | 686 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
687 | case '0': |
688 | break; | |
cd39f2b6 | 689 | #endif |
a863c7d1 MB |
690 | #ifdef USE_THREADS |
691 | case '@': | |
38a03e6e | 692 | sv_setsv(sv, thr->errsv); |
a863c7d1 MB |
693 | break; |
694 | #endif /* USE_THREADS */ | |
79072805 | 695 | } |
a0d0e21e | 696 | return 0; |
79072805 LW |
697 | } |
698 | ||
699 | int | |
864dbfa3 | 700 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
701 | { |
702 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
703 | ||
704 | if (uf && uf->uf_val) | |
705 | (*uf->uf_val)(uf->uf_index, sv); | |
706 | return 0; | |
707 | } | |
708 | ||
709 | int | |
864dbfa3 | 710 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
711 | { |
712 | register char *s; | |
88e89b8a | 713 | char *ptr; |
5aabfad6 | 714 | STRLEN len, klen; |
a0d0e21e | 715 | I32 i; |
1e422769 | 716 | |
a0d0e21e | 717 | s = SvPV(sv,len); |
5aabfad6 | 718 | ptr = MgPV(mg,klen); |
88e89b8a | 719 | my_setenv(ptr, s); |
1e422769 | 720 | |
a0d0e21e LW |
721 | #ifdef DYNAMIC_ENV_FETCH |
722 | /* We just undefd an environment var. Is a replacement */ | |
723 | /* waiting in the wings? */ | |
724 | if (!len) { | |
5aabfad6 | 725 | SV **valp; |
6b88bc9c | 726 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 | 727 | s = SvPV(*valp, len); |
a0d0e21e LW |
728 | } |
729 | #endif | |
1e422769 | 730 | |
39e571d4 | 731 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
732 | /* And you'll never guess what the dog had */ |
733 | /* in its mouth... */ | |
3280af22 | 734 | if (PL_tainting) { |
1e422769 | 735 | MgTAINTEDDIR_off(mg); |
736 | #ifdef VMS | |
5aabfad6 | 737 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 | 738 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
739 | struct stat sbuf; | |
740 | int i = 0, j = 0; | |
741 | ||
742 | do { /* DCL$PATH may be a search list */ | |
743 | while (1) { /* as may dev portion of any element */ | |
744 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
745 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
746 | cando_by_name(S_IWUSR,0,elt) ) { | |
747 | MgTAINTEDDIR_on(mg); | |
748 | return 0; | |
749 | } | |
750 | } | |
751 | if ((cp = strchr(elt, ':')) != Nullch) | |
752 | *cp = '\0'; | |
753 | if (my_trnlnm(elt, eltbuf, j++)) | |
754 | elt = eltbuf; | |
755 | else | |
756 | break; | |
757 | } | |
758 | j = 0; | |
759 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
760 | } | |
761 | #endif /* VMS */ | |
5aabfad6 | 762 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e | 763 | char *strend = s + len; |
463ee0b2 LW |
764 | |
765 | while (s < strend) { | |
96827780 | 766 | char tmpbuf[256]; |
1e422769 | 767 | struct stat st; |
96827780 | 768 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e | 769 | s, strend, ':', &i); |
463ee0b2 | 770 | s++; |
96827780 MB |
771 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
772 | || *tmpbuf != '/' | |
c6ed36e1 | 773 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 774 | MgTAINTEDDIR_on(mg); |
1e422769 | 775 | return 0; |
776 | } | |
463ee0b2 | 777 | } |
79072805 LW |
778 | } |
779 | } | |
39e571d4 | 780 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 781 | |
79072805 LW |
782 | return 0; |
783 | } | |
784 | ||
785 | int | |
864dbfa3 | 786 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 787 | { |
2d8e6c8d GS |
788 | STRLEN n_a; |
789 | my_setenv(MgPV(mg,n_a),Nullch); | |
85e6fe83 LW |
790 | return 0; |
791 | } | |
792 | ||
88e89b8a | 793 | int |
864dbfa3 | 794 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 795 | { |
796 | #if defined(VMS) | |
cea2e8a9 | 797 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 798 | #else |
d58bf5aa | 799 | dTHR; |
3280af22 | 800 | if (PL_localizing) { |
fb73857a | 801 | HE* entry; |
2d8e6c8d | 802 | STRLEN n_a; |
fb73857a | 803 | magic_clear_all_env(sv,mg); |
804 | hv_iterinit((HV*)sv); | |
805 | while (entry = hv_iternext((HV*)sv)) { | |
806 | I32 keylen; | |
807 | my_setenv(hv_iterkey(entry, &keylen), | |
2d8e6c8d | 808 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a | 809 | } |
810 | } | |
811 | #endif | |
812 | return 0; | |
813 | } | |
814 | ||
815 | int | |
864dbfa3 | 816 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 817 | { |
3e3baf6d | 818 | #if defined(VMS) |
cea2e8a9 | 819 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d | 820 | #else |
f2517201 | 821 | # ifdef WIN32 |
3e3baf6d TB |
822 | char *envv = GetEnvironmentStrings(); |
823 | char *cur = envv; | |
824 | STRLEN len; | |
825 | while (*cur) { | |
826 | char *end = strchr(cur,'='); | |
827 | if (end && end != cur) { | |
828 | *end = '\0'; | |
829 | my_setenv(cur,Nullch); | |
830 | *end = '='; | |
ac5c734f | 831 | cur = end + strlen(end+1)+2; |
3e3baf6d TB |
832 | } |
833 | else if ((len = strlen(cur))) | |
834 | cur += len+1; | |
835 | } | |
836 | FreeEnvironmentStrings(envv); | |
f2517201 | 837 | # else |
2c2d71f5 JH |
838 | # ifdef CYGWIN |
839 | I32 i; | |
840 | for (i = 0; environ[i]; i++) | |
841 | Safefree(environ[i]); | |
842 | # else | |
843 | # ifndef PERL_USE_SAFE_PUTENV | |
66b1d557 HM |
844 | I32 i; |
845 | ||
3280af22 | 846 | if (environ == PL_origenviron) |
f2517201 | 847 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 HM |
848 | else |
849 | for (i = 0; environ[i]; i++) | |
f2517201 | 850 | safesysfree(environ[i]); |
2c2d71f5 JH |
851 | # endif /* PERL_USE_SAFE_PUTENV */ |
852 | # endif /* CYGWIN */ | |
f2517201 | 853 | |
66b1d557 HM |
854 | environ[0] = Nullch; |
855 | ||
f2517201 GS |
856 | # endif /* WIN32 */ |
857 | #endif /* VMS */ | |
3e3baf6d | 858 | return 0; |
66b1d557 HM |
859 | } |
860 | ||
861 | int | |
864dbfa3 | 862 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 863 | { |
864 | I32 i; | |
2d8e6c8d | 865 | STRLEN n_a; |
88e89b8a | 866 | /* Are we fetching a signal entry? */ |
2d8e6c8d | 867 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a | 868 | if (i) { |
22c35a8c GS |
869 | if(PL_psig_ptr[i]) |
870 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 871 | else { |
ff68c719 | 872 | Sighandler_t sigstate = rsignal_state(i); |
873 | ||
88e89b8a | 874 | /* cache state so we don't fetch it again */ |
ff68c719 | 875 | if(sigstate == SIG_IGN) |
88e89b8a | 876 | sv_setpv(sv,"IGNORE"); |
877 | else | |
3280af22 | 878 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c | 879 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 880 | SvTEMP_off(sv); |
881 | } | |
882 | } | |
883 | return 0; | |
884 | } | |
885 | int | |
864dbfa3 | 886 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 887 | { |
888 | I32 i; | |
2d8e6c8d | 889 | STRLEN n_a; |
88e89b8a | 890 | /* Are we clearing a signal entry? */ |
2d8e6c8d | 891 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a | 892 | if (i) { |
22c35a8c GS |
893 | if(PL_psig_ptr[i]) { |
894 | SvREFCNT_dec(PL_psig_ptr[i]); | |
895 | PL_psig_ptr[i]=0; | |
88e89b8a | 896 | } |
22c35a8c GS |
897 | if(PL_psig_name[i]) { |
898 | SvREFCNT_dec(PL_psig_name[i]); | |
899 | PL_psig_name[i]=0; | |
88e89b8a | 900 | } |
901 | } | |
902 | return 0; | |
903 | } | |
3d37d572 | 904 | |
85e6fe83 | 905 | int |
864dbfa3 | 906 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 907 | { |
11343788 | 908 | dTHR; |
79072805 LW |
909 | register char *s; |
910 | I32 i; | |
748a9306 | 911 | SV** svp; |
e72dc28c | 912 | STRLEN len; |
a0d0e21e | 913 | |
e72dc28c | 914 | s = MgPV(mg,len); |
748a9306 LW |
915 | if (*s == '_') { |
916 | if (strEQ(s,"__DIE__")) | |
3280af22 | 917 | svp = &PL_diehook; |
748a9306 | 918 | else if (strEQ(s,"__WARN__")) |
3280af22 | 919 | svp = &PL_warnhook; |
748a9306 | 920 | else |
cea2e8a9 | 921 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 922 | i = 0; |
4633a7c4 LW |
923 | if (*svp) { |
924 | SvREFCNT_dec(*svp); | |
925 | *svp = 0; | |
926 | } | |
748a9306 LW |
927 | } |
928 | else { | |
929 | i = whichsig(s); /* ...no, a brick */ | |
930 | if (!i) { | |
599cee73 | 931 | if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM")) |
cea2e8a9 | 932 | Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s); |
748a9306 LW |
933 | return 0; |
934 | } | |
22c35a8c GS |
935 | SvREFCNT_dec(PL_psig_name[i]); |
936 | SvREFCNT_dec(PL_psig_ptr[i]); | |
937 | PL_psig_ptr[i] = SvREFCNT_inc(sv); | |
88e89b8a | 938 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 939 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 940 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 941 | } |
a0d0e21e | 942 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 | 943 | if (i) |
3280af22 | 944 | (void)rsignal(i, PL_sighandlerp); |
748a9306 LW |
945 | else |
946 | *svp = SvREFCNT_inc(sv); | |
a0d0e21e LW |
947 | return 0; |
948 | } | |
e72dc28c | 949 | s = SvPV_force(sv,len); |
748a9306 LW |
950 | if (strEQ(s,"IGNORE")) { |
951 | if (i) | |
ff68c719 | 952 | (void)rsignal(i, SIG_IGN); |
748a9306 LW |
953 | else |
954 | *svp = 0; | |
955 | } | |
956 | else if (strEQ(s,"DEFAULT") || !*s) { | |
957 | if (i) | |
ff68c719 | 958 | (void)rsignal(i, SIG_DFL); |
748a9306 LW |
959 | else |
960 | *svp = 0; | |
961 | } | |
79072805 | 962 | else { |
5aabfad6 | 963 | /* |
964 | * We should warn if HINT_STRICT_REFS, but without | |
965 | * access to a known hint bit in a known OP, we can't | |
966 | * tell whether HINT_STRICT_REFS is in force or not. | |
967 | */ | |
46fc3d4c | 968 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c | 969 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 | 970 | if (i) |
3280af22 | 971 | (void)rsignal(i, PL_sighandlerp); |
748a9306 LW |
972 | else |
973 | *svp = SvREFCNT_inc(sv); | |
79072805 LW |
974 | } |
975 | return 0; | |
976 | } | |
977 | ||
978 | int | |
864dbfa3 | 979 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 980 | { |
3280af22 | 981 | PL_sub_generation++; |
463ee0b2 LW |
982 | return 0; |
983 | } | |
984 | ||
985 | int | |
864dbfa3 | 986 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 987 | { |
a0d0e21e | 988 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 989 | PL_amagic_generation++; |
463ee0b2 | 990 | |
a0d0e21e LW |
991 | return 0; |
992 | } | |
463ee0b2 | 993 | |
946ec16e | 994 | int |
864dbfa3 | 995 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
996 | { |
997 | HV *hv = (HV*)LvTARG(sv); | |
998 | HE *entry; | |
999 | I32 i = 0; | |
1000 | ||
1001 | if (hv) { | |
1002 | (void) hv_iterinit(hv); | |
33c27489 | 1003 | if (! SvTIED_mg((SV*)hv, 'P')) |
6ff81951 GS |
1004 | i = HvKEYS(hv); |
1005 | else { | |
1006 | /*SUPPRESS 560*/ | |
1007 | while (entry = hv_iternext(hv)) { | |
1008 | i++; | |
1009 | } | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | sv_setiv(sv, (IV)i); | |
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | int | |
864dbfa3 | 1018 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1019 | { |
1020 | if (LvTARG(sv)) { | |
1021 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1022 | } |
1023 | return 0; | |
93965878 | 1024 | } |
946ec16e | 1025 | |
e336de0d | 1026 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1027 | STATIC int |
cea2e8a9 | 1028 | S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
a0d0e21e LW |
1029 | { |
1030 | dSP; | |
463ee0b2 | 1031 | |
924508f0 GS |
1032 | PUSHMARK(SP); |
1033 | EXTEND(SP, n); | |
33c27489 | 1034 | PUSHs(SvTIED_obj(sv, mg)); |
93965878 NIS |
1035 | if (n > 1) { |
1036 | if (mg->mg_ptr) { | |
565764a8 | 1037 | if (mg->mg_len >= 0) |
79cb57f6 | 1038 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1039 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1040 | PUSHs((SV*)mg->mg_ptr); |
1041 | } | |
1042 | else if (mg->mg_type == 'p') { | |
565764a8 | 1043 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1044 | } |
1045 | } | |
1046 | if (n > 2) { | |
1047 | PUSHs(val); | |
88e89b8a | 1048 | } |
463ee0b2 LW |
1049 | PUTBACK; |
1050 | ||
864dbfa3 | 1051 | return call_method(meth, flags); |
946ec16e | 1052 | } |
1053 | ||
76e3520e | 1054 | STATIC int |
cea2e8a9 | 1055 | S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth) |
a0d0e21e LW |
1056 | { |
1057 | dSP; | |
463ee0b2 | 1058 | |
a0d0e21e LW |
1059 | ENTER; |
1060 | SAVETMPS; | |
e788e7d3 | 1061 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1062 | |
33c27489 | 1063 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1064 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1065 | } |
463ee0b2 | 1066 | |
d3acc0f7 | 1067 | POPSTACK; |
a0d0e21e LW |
1068 | FREETMPS; |
1069 | LEAVE; | |
1070 | return 0; | |
1071 | } | |
463ee0b2 | 1072 | |
a0d0e21e | 1073 | int |
864dbfa3 | 1074 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1075 | { |
1076 | magic_methpack(sv,mg,"FETCH"); | |
1077 | if (mg->mg_ptr) | |
1078 | mg->mg_flags |= MGf_GSKIP; | |
463ee0b2 LW |
1079 | return 0; |
1080 | } | |
1081 | ||
1082 | int | |
864dbfa3 | 1083 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d GS |
1084 | { |
1085 | dSP; | |
a60c0954 | 1086 | ENTER; |
e788e7d3 | 1087 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1088 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1089 | POPSTACK; |
a60c0954 | 1090 | LEAVE; |
463ee0b2 LW |
1091 | return 0; |
1092 | } | |
1093 | ||
1094 | int | |
864dbfa3 | 1095 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1096 | { |
a0d0e21e LW |
1097 | return magic_methpack(sv,mg,"DELETE"); |
1098 | } | |
463ee0b2 | 1099 | |
93965878 NIS |
1100 | |
1101 | U32 | |
864dbfa3 | 1102 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
93965878 | 1103 | { |
e336de0d | 1104 | dSP; |
93965878 NIS |
1105 | U32 retval = 0; |
1106 | ||
1107 | ENTER; | |
1108 | SAVETMPS; | |
e788e7d3 | 1109 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1110 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1111 | sv = *PL_stack_sp--; |
a60c0954 | 1112 | retval = (U32) SvIV(sv)-1; |
93965878 | 1113 | } |
d3acc0f7 | 1114 | POPSTACK; |
93965878 NIS |
1115 | FREETMPS; |
1116 | LEAVE; | |
1117 | return retval; | |
1118 | } | |
1119 | ||
cea2e8a9 GS |
1120 | int |
1121 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e LW |
1122 | { |
1123 | dSP; | |
463ee0b2 | 1124 | |
e336de0d | 1125 | ENTER; |
e788e7d3 | 1126 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1127 | PUSHMARK(SP); |
33c27489 | 1128 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1129 | PUTBACK; |
864dbfa3 | 1130 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1131 | POPSTACK; |
a60c0954 | 1132 | LEAVE; |
463ee0b2 LW |
1133 | return 0; |
1134 | } | |
1135 | ||
1136 | int | |
864dbfa3 | 1137 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1138 | { |
463ee0b2 | 1139 | dSP; |
dff6d3cd | 1140 | const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1141 | |
1142 | ENTER; | |
a0d0e21e | 1143 | SAVETMPS; |
e788e7d3 | 1144 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1145 | PUSHMARK(SP); |
1146 | EXTEND(SP, 2); | |
33c27489 | 1147 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1148 | if (SvOK(key)) |
1149 | PUSHs(key); | |
1150 | PUTBACK; | |
1151 | ||
864dbfa3 | 1152 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1153 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1154 | |
d3acc0f7 | 1155 | POPSTACK; |
a0d0e21e LW |
1156 | FREETMPS; |
1157 | LEAVE; | |
79072805 LW |
1158 | return 0; |
1159 | } | |
1160 | ||
1161 | int | |
864dbfa3 | 1162 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1163 | { |
1164 | return magic_methpack(sv,mg,"EXISTS"); | |
1165 | } | |
1166 | ||
1167 | int | |
864dbfa3 | 1168 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1169 | { |
11343788 | 1170 | dTHR; |
79072805 LW |
1171 | OP *o; |
1172 | I32 i; | |
1173 | GV* gv; | |
1174 | SV** svp; | |
2d8e6c8d | 1175 | STRLEN n_a; |
79072805 | 1176 | |
3280af22 | 1177 | gv = PL_DBline; |
79072805 | 1178 | i = SvTRUE(sv); |
188ea221 | 1179 | svp = av_fetch(GvAV(gv), |
2d8e6c8d | 1180 | atoi(MgPV(mg,n_a)), FALSE); |
8990e307 | 1181 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
93a17b20 | 1182 | o->op_private = i; |
0453d815 PM |
1183 | else if (ckWARN_d(WARN_INTERNAL)) |
1184 | Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n"); | |
79072805 LW |
1185 | return 0; |
1186 | } | |
1187 | ||
1188 | int | |
864dbfa3 | 1189 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1190 | { |
0f15f207 | 1191 | dTHR; |
3280af22 | 1192 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 LW |
1193 | return 0; |
1194 | } | |
1195 | ||
1196 | int | |
864dbfa3 | 1197 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1198 | { |
0f15f207 | 1199 | dTHR; |
3280af22 | 1200 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e LW |
1201 | return 0; |
1202 | } | |
1203 | ||
1204 | int | |
864dbfa3 | 1205 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1206 | { |
1207 | SV* lsv = LvTARG(sv); | |
1208 | ||
1209 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { | |
1210 | mg = mg_find(lsv, 'g'); | |
565764a8 | 1211 | if (mg && mg->mg_len >= 0) { |
0f15f207 | 1212 | dTHR; |
a0ed51b3 LW |
1213 | I32 i = mg->mg_len; |
1214 | if (IN_UTF8) | |
1215 | sv_pos_b2u(lsv, &i); | |
1216 | sv_setiv(sv, i + PL_curcop->cop_arybase); | |
a0d0e21e LW |
1217 | return 0; |
1218 | } | |
1219 | } | |
1220 | (void)SvOK_off(sv); | |
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | int | |
864dbfa3 | 1225 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1226 | { |
1227 | SV* lsv = LvTARG(sv); | |
1228 | SSize_t pos; | |
1229 | STRLEN len; | |
a0ed51b3 | 1230 | STRLEN ulen; |
c485e607 | 1231 | dTHR; |
a0d0e21e LW |
1232 | |
1233 | mg = 0; | |
1234 | ||
1235 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) | |
1236 | mg = mg_find(lsv, 'g'); | |
1237 | if (!mg) { | |
1238 | if (!SvOK(sv)) | |
1239 | return 0; | |
1240 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); | |
1241 | mg = mg_find(lsv, 'g'); | |
1242 | } | |
1243 | else if (!SvOK(sv)) { | |
565764a8 | 1244 | mg->mg_len = -1; |
a0d0e21e LW |
1245 | return 0; |
1246 | } | |
1247 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1248 | ||
c485e607 | 1249 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 LW |
1250 | |
1251 | if (IN_UTF8) { | |
1252 | ulen = sv_len_utf8(lsv); | |
1253 | if (ulen) | |
1254 | len = ulen; | |
1255 | else | |
1256 | ulen = 0; | |
1257 | } | |
1258 | ||
a0d0e21e LW |
1259 | if (pos < 0) { |
1260 | pos += len; | |
1261 | if (pos < 0) | |
1262 | pos = 0; | |
1263 | } | |
1264 | else if (pos > len) | |
1265 | pos = len; | |
a0ed51b3 LW |
1266 | |
1267 | if (ulen) { | |
1268 | I32 p = pos; | |
1269 | sv_pos_u2b(lsv, &p, 0); | |
1270 | pos = p; | |
1271 | } | |
1272 | ||
565764a8 | 1273 | mg->mg_len = pos; |
71be2cbc | 1274 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e | 1275 | |
79072805 LW |
1276 | return 0; |
1277 | } | |
1278 | ||
1279 | int | |
864dbfa3 | 1280 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1281 | { |
8646b087 | 1282 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1283 | SvFAKE_off(sv); | |
946ec16e | 1284 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 | 1285 | SvFAKE_on(sv); |
1286 | } | |
1287 | else | |
946ec16e | 1288 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 LW |
1289 | return 0; |
1290 | } | |
1291 | ||
1292 | int | |
864dbfa3 | 1293 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1294 | { |
1295 | register char *s; | |
1296 | GV* gv; | |
2d8e6c8d | 1297 | STRLEN n_a; |
79072805 LW |
1298 | |
1299 | if (!SvOK(sv)) | |
1300 | return 0; | |
2d8e6c8d | 1301 | s = SvPV(sv, n_a); |
79072805 LW |
1302 | if (*s == '*' && s[1]) |
1303 | s++; | |
85e6fe83 | 1304 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
1305 | if (sv == (SV*)gv) |
1306 | return 0; | |
1307 | if (GvGP(sv)) | |
88e89b8a | 1308 | gp_free((GV*)sv); |
79072805 | 1309 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1310 | return 0; |
1311 | } | |
1312 | ||
1313 | int | |
864dbfa3 | 1314 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1315 | { |
1316 | STRLEN len; | |
1317 | SV *lsv = LvTARG(sv); | |
1318 | char *tmps = SvPV(lsv,len); | |
1319 | I32 offs = LvTARGOFF(sv); | |
1320 | I32 rem = LvTARGLEN(sv); | |
1321 | ||
1322 | if (offs > len) | |
1323 | offs = len; | |
1324 | if (rem + offs > len) | |
1325 | rem = len - offs; | |
1326 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | int | |
864dbfa3 | 1331 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1332 | { |
8990e307 LW |
1333 | STRLEN len; |
1334 | char *tmps = SvPV(sv,len); | |
1335 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); | |
79072805 LW |
1336 | return 0; |
1337 | } | |
1338 | ||
1339 | int | |
864dbfa3 | 1340 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1341 | { |
a863c7d1 | 1342 | dTHR; |
565764a8 DL |
1343 | TAINT_IF((mg->mg_len & 1) || |
1344 | (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */ | |
463ee0b2 LW |
1345 | return 0; |
1346 | } | |
1347 | ||
1348 | int | |
864dbfa3 | 1349 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1350 | { |
11343788 | 1351 | dTHR; |
3280af22 NIS |
1352 | if (PL_localizing) { |
1353 | if (PL_localizing == 1) | |
565764a8 | 1354 | mg->mg_len <<= 1; |
748a9306 | 1355 | else |
565764a8 | 1356 | mg->mg_len >>= 1; |
a0d0e21e | 1357 | } |
3280af22 | 1358 | else if (PL_tainted) |
565764a8 | 1359 | mg->mg_len |= 1; |
748a9306 | 1360 | else |
565764a8 | 1361 | mg->mg_len &= ~1; |
463ee0b2 LW |
1362 | return 0; |
1363 | } | |
1364 | ||
1365 | int | |
864dbfa3 | 1366 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1367 | { |
1368 | SV *lsv = LvTARG(sv); | |
6ff81951 GS |
1369 | |
1370 | if (!lsv) { | |
1371 | SvOK_off(sv); | |
1372 | return 0; | |
1373 | } | |
6ff81951 | 1374 | |
81e118e0 | 1375 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 GS |
1376 | return 0; |
1377 | } | |
1378 | ||
1379 | int | |
864dbfa3 | 1380 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1381 | { |
1382 | do_vecset(sv); /* XXX slurp this routine */ | |
1383 | return 0; | |
1384 | } | |
1385 | ||
1386 | int | |
864dbfa3 | 1387 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 1388 | { |
71be2cbc | 1389 | SV *targ = Nullsv; |
5f05dabc | 1390 | if (LvTARGLEN(sv)) { |
68dc0745 | 1391 | if (mg->mg_obj) { |
74e13ce4 GS |
1392 | SV *ahv = LvTARG(sv); |
1393 | if (SvTYPE(ahv) == SVt_PVHV) { | |
1394 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); | |
1395 | if (he) | |
1396 | targ = HeVAL(he); | |
1397 | } | |
1398 | else { | |
1399 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0); | |
1400 | if (svp) | |
1401 | targ = *svp; | |
1402 | } | |
68dc0745 | 1403 | } |
1404 | else { | |
3c78fafa | 1405 | AV* av = (AV*)LvTARG(sv); |
68dc0745 | 1406 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1407 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
1408 | } | |
3280af22 | 1409 | if (targ && targ != &PL_sv_undef) { |
e858de61 | 1410 | dTHR; /* just for SvREFCNT_dec */ |
68dc0745 | 1411 | /* somebody else defined it for us */ |
1412 | SvREFCNT_dec(LvTARG(sv)); | |
1413 | LvTARG(sv) = SvREFCNT_inc(targ); | |
1414 | LvTARGLEN(sv) = 0; | |
1415 | SvREFCNT_dec(mg->mg_obj); | |
1416 | mg->mg_obj = Nullsv; | |
1417 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
1418 | } | |
5f05dabc | 1419 | } |
71be2cbc | 1420 | else |
1421 | targ = LvTARG(sv); | |
3280af22 | 1422 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 1423 | return 0; |
1424 | } | |
1425 | ||
1426 | int | |
864dbfa3 | 1427 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 1428 | { |
1429 | if (LvTARGLEN(sv)) | |
68dc0745 | 1430 | vivify_defelem(sv); |
1431 | if (LvTARG(sv)) { | |
5f05dabc | 1432 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 1433 | SvSETMAGIC(LvTARG(sv)); |
1434 | } | |
5f05dabc | 1435 | return 0; |
1436 | } | |
1437 | ||
71be2cbc | 1438 | void |
864dbfa3 | 1439 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 1440 | { |
e858de61 | 1441 | dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/ |
74e13ce4 GS |
1442 | MAGIC *mg; |
1443 | SV *value = Nullsv; | |
71be2cbc | 1444 | |
68dc0745 | 1445 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y'))) |
71be2cbc | 1446 | return; |
68dc0745 | 1447 | if (mg->mg_obj) { |
74e13ce4 | 1448 | SV *ahv = LvTARG(sv); |
2d8e6c8d | 1449 | STRLEN n_a; |
74e13ce4 | 1450 | if (SvTYPE(ahv) == SVt_PVHV) { |
af7f9c15 | 1451 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 GS |
1452 | if (he) |
1453 | value = HeVAL(he); | |
1454 | } | |
1455 | else { | |
af7f9c15 | 1456 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 GS |
1457 | if (svp) |
1458 | value = *svp; | |
1459 | } | |
3280af22 | 1460 | if (!value || value == &PL_sv_undef) |
cea2e8a9 | 1461 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc | 1462 | } |
68dc0745 | 1463 | else { |
1464 | AV* av = (AV*)LvTARG(sv); | |
5aabfad6 | 1465 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 | 1466 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1467 | else { | |
1468 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); | |
3280af22 | 1469 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 1470 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 1471 | } |
1472 | } | |
3e3baf6d | 1473 | (void)SvREFCNT_inc(value); |
68dc0745 | 1474 | SvREFCNT_dec(LvTARG(sv)); |
1475 | LvTARG(sv) = value; | |
71be2cbc | 1476 | LvTARGLEN(sv) = 0; |
68dc0745 | 1477 | SvREFCNT_dec(mg->mg_obj); |
1478 | mg->mg_obj = Nullsv; | |
1479 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
5f05dabc | 1480 | } |
1481 | ||
1482 | int | |
864dbfa3 | 1483 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 GS |
1484 | { |
1485 | AV *av = (AV*)mg->mg_obj; | |
1486 | SV **svp = AvARRAY(av); | |
1487 | I32 i = AvFILLp(av); | |
1488 | while (i >= 0) { | |
1489 | if (svp[i] && svp[i] != &PL_sv_undef) { | |
1490 | if (!SvWEAKREF(svp[i])) | |
cea2e8a9 | 1491 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 GS |
1492 | /* XXX Should we check that it hasn't changed? */ |
1493 | SvRV(svp[i]) = 0; | |
1494 | SvOK_off(svp[i]); | |
1495 | SvWEAKREF_off(svp[i]); | |
1496 | svp[i] = &PL_sv_undef; | |
1497 | } | |
1498 | i--; | |
1499 | } | |
1500 | return 0; | |
1501 | } | |
1502 | ||
1503 | int | |
864dbfa3 | 1504 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 1505 | { |
565764a8 | 1506 | mg->mg_len = -1; |
c6496cc7 | 1507 | SvSCREAM_off(sv); |
93a17b20 LW |
1508 | return 0; |
1509 | } | |
1510 | ||
1511 | int | |
864dbfa3 | 1512 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1513 | { |
463ee0b2 | 1514 | sv_unmagic(sv, 'B'); |
79072805 LW |
1515 | SvVALID_off(sv); |
1516 | return 0; | |
1517 | } | |
1518 | ||
1519 | int | |
864dbfa3 | 1520 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 1521 | { |
1522 | sv_unmagic(sv, 'f'); | |
1523 | SvCOMPILED_off(sv); | |
1524 | return 0; | |
1525 | } | |
1526 | ||
1527 | int | |
864dbfa3 | 1528 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1529 | { |
1530 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
1531 | ||
1532 | if (uf && uf->uf_set) | |
1533 | (*uf->uf_set)(uf->uf_index, sv); | |
1534 | return 0; | |
1535 | } | |
1536 | ||
c277df42 | 1537 | int |
864dbfa3 | 1538 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 IZ |
1539 | { |
1540 | regexp *re = (regexp *)mg->mg_obj; | |
1541 | ReREFCNT_dec(re); | |
1542 | return 0; | |
1543 | } | |
1544 | ||
7a4c00b4 | 1545 | #ifdef USE_LOCALE_COLLATE |
79072805 | 1546 | int |
864dbfa3 | 1547 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 1548 | { |
1549 | /* | |
838b5b74 | 1550 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 1551 | * and vanished with a faint plop. |
1552 | */ | |
7a4c00b4 | 1553 | if (mg->mg_ptr) { |
1554 | Safefree(mg->mg_ptr); | |
1555 | mg->mg_ptr = NULL; | |
565764a8 | 1556 | mg->mg_len = -1; |
7a4c00b4 | 1557 | } |
bbce6d69 | 1558 | return 0; |
1559 | } | |
7a4c00b4 | 1560 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 1561 | |
1562 | int | |
864dbfa3 | 1563 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1564 | { |
11343788 | 1565 | dTHR; |
79072805 LW |
1566 | register char *s; |
1567 | I32 i; | |
8990e307 | 1568 | STRLEN len; |
79072805 | 1569 | switch (*mg->mg_ptr) { |
748a9306 | 1570 | case '\001': /* ^A */ |
3280af22 | 1571 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 1572 | break; |
49460fe6 NIS |
1573 | case '\003': /* ^C */ |
1574 | PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1575 | break; | |
1576 | ||
79072805 | 1577 | case '\004': /* ^D */ |
3280af22 | 1578 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 LW |
1579 | DEBUG_x(dump_all()); |
1580 | break; | |
28f23441 | 1581 | case '\005': /* ^E */ |
cd39f2b6 JH |
1582 | #ifdef MACOS_TRADITIONAL |
1583 | gLastMacOSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
28f23441 | 1584 | #else |
cd39f2b6 JH |
1585 | # ifdef VMS |
1586 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
048c1ddf | 1587 | # else |
cd39f2b6 JH |
1588 | # ifdef WIN32 |
1589 | SetLastError( SvIV(sv) ); | |
1590 | # else | |
1591 | # ifndef OS2 | |
f86702cc | 1592 | /* will anyone ever use this? */ |
1593 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); | |
cd39f2b6 | 1594 | # endif |
048c1ddf IZ |
1595 | # endif |
1596 | # endif | |
22fae026 | 1597 | #endif |
28f23441 | 1598 | break; |
79072805 | 1599 | case '\006': /* ^F */ |
3280af22 | 1600 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 1601 | break; |
a0d0e21e | 1602 | case '\010': /* ^H */ |
3280af22 | 1603 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e | 1604 | break; |
9d116dd7 | 1605 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
1606 | if (PL_inplace) |
1607 | Safefree(PL_inplace); | |
79072805 | 1608 | if (SvOK(sv)) |
2d8e6c8d | 1609 | PL_inplace = savepv(SvPV(sv,len)); |
79072805 | 1610 | else |
3280af22 | 1611 | PL_inplace = Nullch; |
79072805 | 1612 | break; |
28f23441 | 1613 | case '\017': /* ^O */ |
3280af22 NIS |
1614 | if (PL_osname) |
1615 | Safefree(PL_osname); | |
28f23441 | 1616 | if (SvOK(sv)) |
2d8e6c8d | 1617 | PL_osname = savepv(SvPV(sv,len)); |
28f23441 | 1618 | else |
3280af22 | 1619 | PL_osname = Nullch; |
28f23441 | 1620 | break; |
79072805 | 1621 | case '\020': /* ^P */ |
3280af22 | 1622 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1ee4443e IZ |
1623 | if (PL_perldb && !PL_DBsingle) |
1624 | init_debugger(); | |
79072805 LW |
1625 | break; |
1626 | case '\024': /* ^T */ | |
88e89b8a | 1627 | #ifdef BIG_TIME |
6b88bc9c | 1628 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 1629 | #else |
3280af22 | 1630 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a | 1631 | #endif |
79072805 | 1632 | break; |
4438c4b7 JH |
1633 | case '\027': /* ^W & $^Warnings */ |
1634 | if (*(mg->mg_ptr+1) == '\0') { | |
1635 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
1636 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1637 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) | |
0453d815 | 1638 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 1639 | } |
599cee73 | 1640 | } |
4438c4b7 JH |
1641 | else if (strEQ(mg->mg_ptr, "\027arnings")) { |
1642 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
1643 | if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) { | |
1644 | PL_compiling.cop_warnings = WARN_ALL; | |
1645 | PL_dowarn |= G_WARN_ONCE ; | |
1646 | } | |
1647 | else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize)) | |
1648 | PL_compiling.cop_warnings = WARN_NONE; | |
1649 | else { | |
1650 | if (specialWARN(PL_compiling.cop_warnings)) | |
1651 | PL_compiling.cop_warnings = newSVsv(sv) ; | |
1652 | else | |
1653 | sv_setsv(PL_compiling.cop_warnings, sv); | |
1654 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) | |
1655 | PL_dowarn |= G_WARN_ONCE ; | |
1656 | } | |
1657 | } | |
971a9dd3 | 1658 | } |
79072805 LW |
1659 | break; |
1660 | case '.': | |
3280af22 NIS |
1661 | if (PL_localizing) { |
1662 | if (PL_localizing == 1) | |
1663 | save_sptr((SV**)&PL_last_in_gv); | |
748a9306 | 1664 | } |
3280af22 NIS |
1665 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
1666 | IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv); | |
79072805 LW |
1667 | break; |
1668 | case '^': | |
3280af22 | 1669 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 1670 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 1671 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
1672 | break; |
1673 | case '~': | |
3280af22 | 1674 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 1675 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 1676 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
1677 | break; |
1678 | case '=': | |
3280af22 | 1679 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1680 | break; |
1681 | case '-': | |
3280af22 NIS |
1682 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1683 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
1684 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
1685 | break; |
1686 | case '%': | |
3280af22 | 1687 | IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1688 | break; |
1689 | case '|': | |
4b65379b | 1690 | { |
3280af22 | 1691 | IO *io = GvIOp(PL_defoutgv); |
4b65379b CS |
1692 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
1693 | IoFLAGS(io) &= ~IOf_FLUSH; | |
1694 | else { | |
1695 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
1696 | PerlIO *ofp = IoOFP(io); | |
1697 | if (ofp) | |
1698 | (void)PerlIO_flush(ofp); | |
1699 | IoFLAGS(io) |= IOf_FLUSH; | |
1700 | } | |
1701 | } | |
79072805 LW |
1702 | } |
1703 | break; | |
1704 | case '*': | |
463ee0b2 | 1705 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
3280af22 | 1706 | PL_multiline = (i != 0); |
79072805 LW |
1707 | break; |
1708 | case '/': | |
3280af22 NIS |
1709 | SvREFCNT_dec(PL_nrs); |
1710 | PL_nrs = newSVsv(sv); | |
1711 | SvREFCNT_dec(PL_rs); | |
1712 | PL_rs = SvREFCNT_inc(PL_nrs); | |
79072805 LW |
1713 | break; |
1714 | case '\\': | |
3280af22 NIS |
1715 | if (PL_ors) |
1716 | Safefree(PL_ors); | |
009c130f GS |
1717 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
1718 | s = SvPV(sv,PL_orslen); | |
1719 | PL_ors = savepvn(s,PL_orslen); | |
1720 | } | |
e3c19b7b | 1721 | else { |
3280af22 NIS |
1722 | PL_ors = Nullch; |
1723 | PL_orslen = 0; | |
e3c19b7b | 1724 | } |
79072805 LW |
1725 | break; |
1726 | case ',': | |
3280af22 NIS |
1727 | if (PL_ofs) |
1728 | Safefree(PL_ofs); | |
1729 | PL_ofs = savepv(SvPV(sv, PL_ofslen)); | |
79072805 LW |
1730 | break; |
1731 | case '#': | |
3280af22 NIS |
1732 | if (PL_ofmt) |
1733 | Safefree(PL_ofmt); | |
2d8e6c8d | 1734 | PL_ofmt = savepv(SvPV(sv,len)); |
79072805 LW |
1735 | break; |
1736 | case '[': | |
3280af22 | 1737 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1738 | break; |
1739 | case '?': | |
ff0cee69 | 1740 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
1741 | if (PL_localizing == 2) { |
1742 | PL_statusvalue = LvTARGOFF(sv); | |
1743 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 1744 | } |
1745 | else | |
1746 | #endif | |
1747 | #ifdef VMSISH_STATUS | |
1748 | if (VMSISH_STATUS) | |
1749 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); | |
1750 | else | |
1751 | #endif | |
1752 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
79072805 LW |
1753 | break; |
1754 | case '!': | |
78987ded | 1755 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
f86702cc | 1756 | (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno); |
79072805 LW |
1757 | break; |
1758 | case '<': | |
3280af22 NIS |
1759 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1760 | if (PL_delaymagic) { | |
1761 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
1762 | break; /* don't do magic till later */ |
1763 | } | |
1764 | #ifdef HAS_SETRUID | |
b28d0864 | 1765 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
1766 | #else |
1767 | #ifdef HAS_SETREUID | |
3280af22 | 1768 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 1769 | #else |
85e6fe83 | 1770 | #ifdef HAS_SETRESUID |
b28d0864 | 1771 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 1772 | #else |
b28d0864 NIS |
1773 | if (PL_uid == PL_euid) /* special case $< = $> */ |
1774 | (void)PerlProc_setuid(PL_uid); | |
a0d0e21e | 1775 | else { |
d8eceb89 | 1776 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 1777 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 1778 | } |
79072805 LW |
1779 | #endif |
1780 | #endif | |
85e6fe83 | 1781 | #endif |
d8eceb89 | 1782 | PL_uid = PerlProc_getuid(); |
3280af22 | 1783 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1784 | break; |
1785 | case '>': | |
3280af22 NIS |
1786 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1787 | if (PL_delaymagic) { | |
1788 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
1789 | break; /* don't do magic till later */ |
1790 | } | |
1791 | #ifdef HAS_SETEUID | |
3280af22 | 1792 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
1793 | #else |
1794 | #ifdef HAS_SETREUID | |
b28d0864 | 1795 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
1796 | #else |
1797 | #ifdef HAS_SETRESUID | |
6b88bc9c | 1798 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 1799 | #else |
b28d0864 NIS |
1800 | if (PL_euid == PL_uid) /* special case $> = $< */ |
1801 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 1802 | else { |
e8ee3774 | 1803 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 1804 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 1805 | } |
79072805 LW |
1806 | #endif |
1807 | #endif | |
85e6fe83 | 1808 | #endif |
d8eceb89 | 1809 | PL_euid = PerlProc_geteuid(); |
3280af22 | 1810 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1811 | break; |
1812 | case '(': | |
3280af22 NIS |
1813 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1814 | if (PL_delaymagic) { | |
1815 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
1816 | break; /* don't do magic till later */ |
1817 | } | |
1818 | #ifdef HAS_SETRGID | |
b28d0864 | 1819 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
1820 | #else |
1821 | #ifdef HAS_SETREGID | |
3280af22 | 1822 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
1823 | #else |
1824 | #ifdef HAS_SETRESGID | |
b28d0864 | 1825 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 1826 | #else |
b28d0864 NIS |
1827 | if (PL_gid == PL_egid) /* special case $( = $) */ |
1828 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 1829 | else { |
d8eceb89 | 1830 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 1831 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 1832 | } |
79072805 LW |
1833 | #endif |
1834 | #endif | |
85e6fe83 | 1835 | #endif |
d8eceb89 | 1836 | PL_gid = PerlProc_getgid(); |
3280af22 | 1837 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1838 | break; |
1839 | case ')': | |
5cd24f17 | 1840 | #ifdef HAS_SETGROUPS |
1841 | { | |
2d8e6c8d | 1842 | char *p = SvPV(sv, len); |
5cd24f17 | 1843 | Groups_t gary[NGROUPS]; |
1844 | ||
5cd24f17 | 1845 | while (isSPACE(*p)) |
1846 | ++p; | |
2d4389e4 | 1847 | PL_egid = Atol(p); |
5cd24f17 | 1848 | for (i = 0; i < NGROUPS; ++i) { |
1849 | while (*p && !isSPACE(*p)) | |
1850 | ++p; | |
1851 | while (isSPACE(*p)) | |
1852 | ++p; | |
1853 | if (!*p) | |
1854 | break; | |
2d4389e4 | 1855 | gary[i] = Atol(p); |
5cd24f17 | 1856 | } |
8cc95fdb | 1857 | if (i) |
1858 | (void)setgroups(i, gary); | |
5cd24f17 | 1859 | } |
1860 | #else /* HAS_SETGROUPS */ | |
b28d0864 | 1861 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 | 1862 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
1863 | if (PL_delaymagic) { |
1864 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
1865 | break; /* don't do magic till later */ |
1866 | } | |
1867 | #ifdef HAS_SETEGID | |
3280af22 | 1868 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
1869 | #else |
1870 | #ifdef HAS_SETREGID | |
b28d0864 | 1871 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
1872 | #else |
1873 | #ifdef HAS_SETRESGID | |
b28d0864 | 1874 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 1875 | #else |
b28d0864 NIS |
1876 | if (PL_egid == PL_gid) /* special case $) = $( */ |
1877 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 1878 | else { |
d8eceb89 | 1879 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 1880 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 1881 | } |
79072805 LW |
1882 | #endif |
1883 | #endif | |
85e6fe83 | 1884 | #endif |
d8eceb89 | 1885 | PL_egid = PerlProc_getegid(); |
3280af22 | 1886 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1887 | break; |
1888 | case ':': | |
2d8e6c8d | 1889 | PL_chopset = SvPV_force(sv,len); |
79072805 | 1890 | break; |
cd39f2b6 | 1891 | #ifndef MACOS_TRADITIONAL |
79072805 | 1892 | case '0': |
3280af22 NIS |
1893 | if (!PL_origalen) { |
1894 | s = PL_origargv[0]; | |
79072805 LW |
1895 | s += strlen(s); |
1896 | /* See if all the arguments are contiguous in memory */ | |
3280af22 NIS |
1897 | for (i = 1; i < PL_origargc; i++) { |
1898 | if (PL_origargv[i] == s + 1 | |
fb73857a | 1899 | #ifdef OS2 |
6b88bc9c | 1900 | || PL_origargv[i] == s + 2 |
fb73857a | 1901 | #endif |
1902 | ) | |
379c4362 GS |
1903 | { |
1904 | ++s; | |
1905 | s += strlen(s); /* this one is ok too */ | |
1906 | } | |
fb73857a | 1907 | else |
1908 | break; | |
79072805 | 1909 | } |
bbce6d69 | 1910 | /* can grab env area too? */ |
3280af22 | 1911 | if (PL_origenviron && (PL_origenviron[0] == s + 1 |
fb73857a | 1912 | #ifdef OS2 |
6b88bc9c | 1913 | || (PL_origenviron[0] == s + 9 && (s += 8)) |
fb73857a | 1914 | #endif |
1915 | )) { | |
66b1d557 | 1916 | my_setenv("NoNe SuCh", Nullch); |
79072805 | 1917 | /* force copy of environment */ |
3280af22 | 1918 | for (i = 0; PL_origenviron[i]; i++) |
379c4362 GS |
1919 | if (PL_origenviron[i] == s + 1) { |
1920 | ++s; | |
1921 | s += strlen(s); | |
1922 | } | |
fb73857a | 1923 | else |
1924 | break; | |
79072805 | 1925 | } |
3280af22 | 1926 | PL_origalen = s - PL_origargv[0]; |
79072805 | 1927 | } |
a0d0e21e | 1928 | s = SvPV_force(sv,len); |
8990e307 | 1929 | i = len; |
3280af22 NIS |
1930 | if (i >= PL_origalen) { |
1931 | i = PL_origalen; | |
fb73857a | 1932 | /* don't allow system to limit $0 seen by script */ |
1933 | /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */ | |
3280af22 NIS |
1934 | Copy(s, PL_origargv[0], i, char); |
1935 | s = PL_origargv[0]+i; | |
fb73857a | 1936 | *s = '\0'; |
79072805 LW |
1937 | } |
1938 | else { | |
3280af22 NIS |
1939 | Copy(s, PL_origargv[0], i, char); |
1940 | s = PL_origargv[0]+i; | |
79072805 | 1941 | *s++ = '\0'; |
3280af22 | 1942 | while (++i < PL_origalen) |
8990e307 | 1943 | *s++ = ' '; |
3280af22 NIS |
1944 | s = PL_origargv[0]+i; |
1945 | for (i = 1; i < PL_origargc; i++) | |
1946 | PL_origargv[i] = Nullch; | |
79072805 LW |
1947 | } |
1948 | break; | |
cd39f2b6 | 1949 | #endif |
a863c7d1 MB |
1950 | #ifdef USE_THREADS |
1951 | case '@': | |
38a03e6e | 1952 | sv_setsv(thr->errsv, sv); |
a863c7d1 MB |
1953 | break; |
1954 | #endif /* USE_THREADS */ | |
79072805 LW |
1955 | } |
1956 | return 0; | |
1957 | } | |
1958 | ||
f93b4edd MB |
1959 | #ifdef USE_THREADS |
1960 | int | |
864dbfa3 | 1961 | Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg) |
f93b4edd MB |
1962 | { |
1963 | dTHR; | |
b900a521 JH |
1964 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1965 | "0x%"UVxf": magic_mutexfree 0x%"UVxf"\n", | |
1966 | PTR2UV(thr), PTR2UV(sv));) | |
f93b4edd | 1967 | if (MgOWNER(mg)) |
cea2e8a9 | 1968 | Perl_croak(aTHX_ "panic: magic_mutexfree"); |
f93b4edd MB |
1969 | MUTEX_DESTROY(MgMUTEXP(mg)); |
1970 | COND_DESTROY(MgCONDP(mg)); | |
1971 | return 0; | |
1972 | } | |
1973 | #endif /* USE_THREADS */ | |
1974 | ||
79072805 | 1975 | I32 |
864dbfa3 | 1976 | Perl_whichsig(pTHX_ char *sig) |
79072805 LW |
1977 | { |
1978 | register char **sigv; | |
1979 | ||
22c35a8c | 1980 | for (sigv = PL_sig_name+1; *sigv; sigv++) |
79072805 | 1981 | if (strEQ(sig,*sigv)) |
22c35a8c | 1982 | return PL_sig_num[sigv - PL_sig_name]; |
79072805 LW |
1983 | #ifdef SIGCLD |
1984 | if (strEQ(sig,"CHLD")) | |
1985 | return SIGCLD; | |
1986 | #endif | |
1987 | #ifdef SIGCHLD | |
1988 | if (strEQ(sig,"CLD")) | |
1989 | return SIGCHLD; | |
1990 | #endif | |
1991 | return 0; | |
1992 | } | |
1993 | ||
84902520 TB |
1994 | static SV* sig_sv; |
1995 | ||
ecfc5424 | 1996 | Signal_t |
cea2e8a9 | 1997 | Perl_sighandler(int sig) |
79072805 | 1998 | { |
cea2e8a9 | 1999 | dTHX; |
79072805 | 2000 | dSP; |
00d579c5 | 2001 | GV *gv = Nullgv; |
a0d0e21e | 2002 | HV *st; |
3280af22 | 2003 | SV *sv, *tSv = PL_Sv; |
00d579c5 | 2004 | CV *cv = Nullcv; |
533c011a | 2005 | OP *myop = PL_op; |
84902520 | 2006 | U32 flags = 0; |
3280af22 NIS |
2007 | I32 o_save_i = PL_savestack_ix, type; |
2008 | XPV *tXpv = PL_Xpv; | |
84902520 | 2009 | |
3280af22 | 2010 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2011 | flags |= 1; |
3280af22 | 2012 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2013 | flags |= 4; |
3280af22 | 2014 | if (PL_retstack_ix < PL_retstack_max - 2) |
84902520 | 2015 | flags |= 8; |
3280af22 | 2016 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2017 | flags |= 16; |
2018 | ||
22c35a8c | 2019 | if (!PL_psig_ptr[sig]) |
cea2e8a9 | 2020 | Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n", |
22c35a8c | 2021 | PL_sig_name[sig]); |
ff0cee69 | 2022 | |
84902520 TB |
2023 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2024 | infinity, so we fix 4 (in fact 5): */ | |
2025 | if (flags & 1) { | |
3280af22 NIS |
2026 | PL_savestack_ix += 5; /* Protect save in progress. */ |
2027 | o_save_i = PL_savestack_ix; | |
c76ac1ee | 2028 | SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags); |
84902520 TB |
2029 | } |
2030 | if (flags & 4) | |
3280af22 | 2031 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2032 | if (flags & 8) { |
3280af22 NIS |
2033 | PL_retstack_ix++; |
2034 | PL_retstack[PL_retstack_ix] = NULL; | |
84902520 TB |
2035 | } |
2036 | if (flags & 16) | |
3280af22 | 2037 | PL_scopestack_ix += 1; |
84902520 | 2038 | /* sv_2cv is too complicated, try a simpler variant first: */ |
22c35a8c | 2039 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 | 2040 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c | 2041 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 | 2042 | |
a0d0e21e | 2043 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2044 | if (ckWARN(WARN_SIGNAL)) |
cea2e8a9 | 2045 | Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2046 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2047 | : ((cv && CvGV(cv)) |
2048 | ? GvENAME(CvGV(cv)) | |
2049 | : "__ANON__"))); | |
2050 | goto cleanup; | |
79072805 LW |
2051 | } |
2052 | ||
22c35a8c GS |
2053 | if(PL_psig_name[sig]) { |
2054 | sv = SvREFCNT_inc(PL_psig_name[sig]); | |
84902520 TB |
2055 | flags |= 64; |
2056 | sig_sv = sv; | |
2057 | } else { | |
ff0cee69 | 2058 | sv = sv_newmortal(); |
22c35a8c | 2059 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2060 | } |
e336de0d | 2061 | |
e788e7d3 | 2062 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2063 | PUSHMARK(SP); |
79072805 | 2064 | PUSHs(sv); |
79072805 | 2065 | PUTBACK; |
a0d0e21e | 2066 | |
864dbfa3 | 2067 | call_sv((SV*)cv, G_DISCARD); |
79072805 | 2068 | |
d3acc0f7 | 2069 | POPSTACK; |
00d579c5 | 2070 | cleanup: |
84902520 | 2071 | if (flags & 1) |
3280af22 | 2072 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
84902520 | 2073 | if (flags & 4) |
3280af22 | 2074 | PL_markstack_ptr--; |
84902520 | 2075 | if (flags & 8) |
3280af22 | 2076 | PL_retstack_ix--; |
84902520 | 2077 | if (flags & 16) |
3280af22 | 2078 | PL_scopestack_ix -= 1; |
84902520 TB |
2079 | if (flags & 64) |
2080 | SvREFCNT_dec(sv); | |
533c011a | 2081 | PL_op = myop; /* Apparently not needed... */ |
84902520 | 2082 | |
3280af22 NIS |
2083 | PL_Sv = tSv; /* Restore global temporaries. */ |
2084 | PL_Xpv = tXpv; | |
79072805 LW |
2085 | return; |
2086 | } | |
4e35701f NIS |
2087 | |
2088 | ||
51371543 | 2089 | #ifdef PERL_OBJECT |
51371543 GS |
2090 | #include "XSUB.h" |
2091 | #endif | |
2092 | ||
2093 | static void | |
2094 | restore_magic(pTHXo_ void *p) | |
2095 | { | |
2096 | dTHR; | |
2097 | MGS* mgs = SSPTR((I32)p, MGS*); | |
2098 | SV* sv = mgs->mgs_sv; | |
2099 | ||
2100 | if (!sv) | |
2101 | return; | |
2102 | ||
2103 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2104 | { | |
2105 | if (mgs->mgs_flags) | |
2106 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2107 | else | |
2108 | mg_magical(sv); | |
2109 | if (SvGMAGICAL(sv)) | |
2110 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
2111 | } | |
2112 | ||
2113 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2114 | ||
2115 | /* If we're still on top of the stack, pop us off. (That condition | |
2116 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2117 | * if it's being called via leave_scope.) | |
2118 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2119 | * may leave alloc gunk on the savestack, and some code | |
2120 | * (e.g. sighandler) doesn't expect that... | |
2121 | */ | |
2122 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2123 | { | |
2124 | I32 popval = SSPOPINT; | |
c76ac1ee | 2125 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2126 | PL_savestack_ix -= 2; |
2127 | popval = SSPOPINT; | |
2128 | assert(popval == SAVEt_ALLOC); | |
2129 | popval = SSPOPINT; | |
2130 | PL_savestack_ix -= popval; | |
2131 | } | |
2132 | ||
2133 | } | |
2134 | ||
2135 | static void | |
2136 | unwind_handler_stack(pTHXo_ void *p) | |
2137 | { | |
2138 | dTHR; | |
2139 | U32 flags = *(U32*)p; | |
2140 | ||
2141 | if (flags & 1) | |
2142 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
2143 | /* cxstack_ix-- Not needed, die already unwound it. */ | |
2144 | if (flags & 64) | |
2145 | SvREFCNT_dec(sig_sv); | |
2146 | } |