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)); |
d056ab3f GS |
409 | #if defined(YYDEBUG) && defined(DEBUGGING) |
410 | PL_yydebug = (PL_debug & 1); | |
411 | #endif | |
79072805 | 412 | break; |
28f23441 | 413 | case '\005': /* ^E */ |
cd39f2b6 JH |
414 | #ifdef MACOS_TRADITIONAL |
415 | { | |
416 | char msg[256]; | |
417 | ||
418 | sv_setnv(sv,(double)gLastMacOSErr); | |
419 | sv_setpv(sv, gLastMacOSErr ? GetSysErrText(gLastMacOSErr, msg) : ""); | |
420 | } | |
421 | #else | |
28f23441 | 422 | #ifdef VMS |
423 | { | |
424 | # include <descrip.h> | |
425 | # include <starlet.h> | |
426 | char msg[255]; | |
427 | $DESCRIPTOR(msgdsc,msg); | |
65202027 | 428 | sv_setnv(sv,(NV) vaxc$errno); |
28f23441 | 429 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) |
430 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
431 | else | |
432 | sv_setpv(sv,""); | |
433 | } | |
434 | #else | |
88e89b8a | 435 | #ifdef OS2 |
fb73857a | 436 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
65202027 | 437 | sv_setnv(sv, (NV)errno); |
fb73857a | 438 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
439 | } else { | |
017f25f1 IZ |
440 | if (errno != errno_isOS2) { |
441 | int tmp = _syserrno(); | |
442 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ | |
443 | Perl_rc = tmp; | |
444 | } | |
65202027 | 445 | sv_setnv(sv, (NV)Perl_rc); |
fb73857a | 446 | sv_setpv(sv, os2error(Perl_rc)); |
447 | } | |
88e89b8a | 448 | #else |
22fae026 TM |
449 | #ifdef WIN32 |
450 | { | |
451 | DWORD dwErr = GetLastError(); | |
65202027 | 452 | sv_setnv(sv, (NV)dwErr); |
22fae026 | 453 | if (dwErr) |
76e3520e | 454 | { |
0cb96387 | 455 | PerlProc_GetOSError(sv, dwErr); |
76e3520e | 456 | } |
22fae026 TM |
457 | else |
458 | sv_setpv(sv, ""); | |
459 | SetLastError(dwErr); | |
460 | } | |
461 | #else | |
65202027 | 462 | sv_setnv(sv, (NV)errno); |
28f23441 | 463 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
464 | #endif | |
88e89b8a | 465 | #endif |
22fae026 | 466 | #endif |
cd39f2b6 | 467 | #endif |
946ec16e | 468 | SvNOK_on(sv); /* what a wonderful hack! */ |
28f23441 | 469 | break; |
79072805 | 470 | case '\006': /* ^F */ |
3280af22 | 471 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 472 | break; |
a0d0e21e | 473 | case '\010': /* ^H */ |
3280af22 | 474 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 475 | break; |
9d116dd7 | 476 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
477 | if (PL_inplace) |
478 | sv_setpv(sv, PL_inplace); | |
79072805 | 479 | else |
3280af22 | 480 | sv_setsv(sv, &PL_sv_undef); |
79072805 | 481 | break; |
28f23441 | 482 | case '\017': /* ^O */ |
3280af22 | 483 | sv_setpv(sv, PL_osname); |
28f23441 | 484 | break; |
79072805 | 485 | case '\020': /* ^P */ |
3280af22 | 486 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 487 | break; |
fb73857a | 488 | case '\023': /* ^S */ |
d58bf5aa MB |
489 | { |
490 | dTHR; | |
3280af22 | 491 | if (PL_lex_state != LEX_NOTPARSING) |
d58bf5aa | 492 | SvOK_off(sv); |
3280af22 | 493 | else if (PL_in_eval) |
d58bf5aa MB |
494 | sv_setiv(sv, 1); |
495 | else | |
496 | sv_setiv(sv, 0); | |
497 | } | |
fb73857a | 498 | break; |
79072805 | 499 | case '\024': /* ^T */ |
88e89b8a | 500 | #ifdef BIG_TIME |
6b88bc9c | 501 | sv_setnv(sv, PL_basetime); |
88e89b8a | 502 | #else |
3280af22 | 503 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 504 | #endif |
79072805 | 505 | break; |
4438c4b7 JH |
506 | case '\027': /* ^W & $^Warnings*/ |
507 | if (*(mg->mg_ptr+1) == '\0') | |
508 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); | |
509 | else if (strEQ(mg->mg_ptr, "\027arnings")) { | |
510 | if (PL_compiling.cop_warnings == WARN_NONE || | |
511 | PL_compiling.cop_warnings == WARN_STD) | |
512 | { | |
513 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; | |
514 | } | |
515 | else if (PL_compiling.cop_warnings == WARN_ALL) { | |
516 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
517 | } | |
518 | else { | |
519 | sv_setsv(sv, PL_compiling.cop_warnings); | |
520 | } | |
521 | } | |
79072805 LW |
522 | break; |
523 | case '1': case '2': case '3': case '4': | |
524 | case '5': case '6': case '7': case '8': case '9': case '&': | |
3280af22 | 525 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
526 | I32 s1, t1; |
527 | ||
a863c7d1 MB |
528 | /* |
529 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
530 | * XXX Does the new way break anything? | |
531 | */ | |
532 | paren = atoi(mg->mg_ptr); | |
79072805 | 533 | getparen: |
d9f97599 | 534 | if (paren <= rx->nparens && |
cf93c79d IZ |
535 | (s1 = rx->startp[paren]) != -1 && |
536 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 537 | { |
cf93c79d IZ |
538 | i = t1 - s1; |
539 | s = rx->subbeg + s1; | |
13f57bf8 | 540 | getrx: |
748a9306 | 541 | if (i >= 0) { |
13f57bf8 | 542 | bool was_tainted; |
3280af22 NIS |
543 | if (PL_tainting) { |
544 | was_tainted = PL_tainted; | |
545 | PL_tainted = FALSE; | |
13f57bf8 | 546 | } |
cf93c79d | 547 | sv_setpvn(sv, s, i); |
3280af22 NIS |
548 | if (PL_tainting) |
549 | PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx)); | |
748a9306 LW |
550 | break; |
551 | } | |
79072805 | 552 | } |
79072805 | 553 | } |
3280af22 | 554 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
555 | break; |
556 | case '+': | |
3280af22 | 557 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 | 558 | paren = rx->lastparen; |
a0d0e21e LW |
559 | if (paren) |
560 | goto getparen; | |
79072805 | 561 | } |
3280af22 | 562 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
563 | break; |
564 | case '`': | |
3280af22 | 565 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
566 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
567 | i = rx->startp[0]; | |
13f57bf8 | 568 | goto getrx; |
79072805 | 569 | } |
79072805 | 570 | } |
3280af22 | 571 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
572 | break; |
573 | case '\'': | |
3280af22 | 574 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
575 | if (rx->subbeg && rx->endp[0] != -1) { |
576 | s = rx->subbeg + rx->endp[0]; | |
577 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 578 | goto getrx; |
79072805 | 579 | } |
79072805 | 580 | } |
3280af22 | 581 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
582 | break; |
583 | case '.': | |
584 | #ifndef lint | |
3280af22 NIS |
585 | if (GvIO(PL_last_in_gv)) { |
586 | sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv))); | |
79072805 LW |
587 | } |
588 | #endif | |
589 | break; | |
590 | case '?': | |
809a5acc | 591 | { |
809a5acc | 592 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 593 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
594 | LvTARGOFF(sv) = PL_statusvalue; |
595 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 596 | #endif |
809a5acc | 597 | } |
79072805 LW |
598 | break; |
599 | case '^': | |
3280af22 | 600 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
601 | if (s) |
602 | sv_setpv(sv,s); | |
603 | else { | |
3280af22 | 604 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 LW |
605 | sv_catpv(sv,"_TOP"); |
606 | } | |
607 | break; | |
608 | case '~': | |
3280af22 | 609 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 610 | if (!s) |
3280af22 | 611 | s = GvENAME(PL_defoutgv); |
79072805 LW |
612 | sv_setpv(sv,s); |
613 | break; | |
614 | #ifndef lint | |
615 | case '=': | |
3280af22 | 616 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
617 | break; |
618 | case '-': | |
3280af22 | 619 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
620 | break; |
621 | case '%': | |
3280af22 | 622 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 LW |
623 | break; |
624 | #endif | |
625 | case ':': | |
626 | break; | |
627 | case '/': | |
628 | break; | |
629 | case '[': | |
3280af22 | 630 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 LW |
631 | break; |
632 | case '|': | |
3280af22 | 633 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 LW |
634 | break; |
635 | case ',': | |
3280af22 | 636 | sv_setpvn(sv,PL_ofs,PL_ofslen); |
79072805 LW |
637 | break; |
638 | case '\\': | |
3280af22 | 639 | sv_setpvn(sv,PL_ors,PL_orslen); |
79072805 LW |
640 | break; |
641 | case '#': | |
3280af22 | 642 | sv_setpv(sv,PL_ofmt); |
79072805 LW |
643 | break; |
644 | case '!': | |
a5f75d66 | 645 | #ifdef VMS |
65202027 | 646 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 647 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 648 | #else |
88e89b8a | 649 | { |
650 | int saveerrno = errno; | |
65202027 | 651 | sv_setnv(sv, (NV)errno); |
88e89b8a | 652 | #ifdef OS2 |
ed344e4f IZ |
653 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
654 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 655 | else |
a5f75d66 | 656 | #endif |
2304df62 | 657 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 658 | errno = saveerrno; |
659 | } | |
660 | #endif | |
946ec16e | 661 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
662 | break; |
663 | case '<': | |
3280af22 | 664 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
665 | break; |
666 | case '>': | |
3280af22 | 667 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
668 | break; |
669 | case '(': | |
3280af22 | 670 | sv_setiv(sv, (IV)PL_gid); |
a52cb5f7 | 671 | #ifdef HAS_GETGROUPS |
785fb66b | 672 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid); |
a52cb5f7 | 673 | #endif |
79072805 LW |
674 | goto add_groups; |
675 | case ')': | |
3280af22 | 676 | sv_setiv(sv, (IV)PL_egid); |
a52cb5f7 | 677 | #ifdef HAS_GETGROUPS |
785fb66b | 678 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid); |
a52cb5f7 | 679 | #endif |
79072805 | 680 | add_groups: |
79072805 | 681 | #ifdef HAS_GETGROUPS |
79072805 | 682 | { |
a0d0e21e | 683 | Groups_t gary[NGROUPS]; |
79072805 | 684 | i = getgroups(NGROUPS,gary); |
46fc3d4c | 685 | while (--i >= 0) |
785fb66b | 686 | Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]); |
79072805 LW |
687 | } |
688 | #endif | |
29355cf7 | 689 | SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
690 | break; |
691 | case '*': | |
692 | break; | |
cd39f2b6 | 693 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
694 | case '0': |
695 | break; | |
cd39f2b6 | 696 | #endif |
a863c7d1 MB |
697 | #ifdef USE_THREADS |
698 | case '@': | |
38a03e6e | 699 | sv_setsv(sv, thr->errsv); |
a863c7d1 MB |
700 | break; |
701 | #endif /* USE_THREADS */ | |
79072805 | 702 | } |
a0d0e21e | 703 | return 0; |
79072805 LW |
704 | } |
705 | ||
706 | int | |
864dbfa3 | 707 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
708 | { |
709 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
710 | ||
711 | if (uf && uf->uf_val) | |
712 | (*uf->uf_val)(uf->uf_index, sv); | |
713 | return 0; | |
714 | } | |
715 | ||
716 | int | |
864dbfa3 | 717 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
718 | { |
719 | register char *s; | |
88e89b8a | 720 | char *ptr; |
5aabfad6 | 721 | STRLEN len, klen; |
a0d0e21e | 722 | I32 i; |
1e422769 | 723 | |
a0d0e21e | 724 | s = SvPV(sv,len); |
5aabfad6 | 725 | ptr = MgPV(mg,klen); |
88e89b8a | 726 | my_setenv(ptr, s); |
1e422769 | 727 | |
a0d0e21e LW |
728 | #ifdef DYNAMIC_ENV_FETCH |
729 | /* We just undefd an environment var. Is a replacement */ | |
730 | /* waiting in the wings? */ | |
731 | if (!len) { | |
5aabfad6 | 732 | SV **valp; |
6b88bc9c | 733 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 | 734 | s = SvPV(*valp, len); |
a0d0e21e LW |
735 | } |
736 | #endif | |
1e422769 | 737 | |
39e571d4 | 738 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
739 | /* And you'll never guess what the dog had */ |
740 | /* in its mouth... */ | |
3280af22 | 741 | if (PL_tainting) { |
1e422769 | 742 | MgTAINTEDDIR_off(mg); |
743 | #ifdef VMS | |
5aabfad6 | 744 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 | 745 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
746 | struct stat sbuf; | |
747 | int i = 0, j = 0; | |
748 | ||
749 | do { /* DCL$PATH may be a search list */ | |
750 | while (1) { /* as may dev portion of any element */ | |
751 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
752 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
753 | cando_by_name(S_IWUSR,0,elt) ) { | |
754 | MgTAINTEDDIR_on(mg); | |
755 | return 0; | |
756 | } | |
757 | } | |
758 | if ((cp = strchr(elt, ':')) != Nullch) | |
759 | *cp = '\0'; | |
760 | if (my_trnlnm(elt, eltbuf, j++)) | |
761 | elt = eltbuf; | |
762 | else | |
763 | break; | |
764 | } | |
765 | j = 0; | |
766 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
767 | } | |
768 | #endif /* VMS */ | |
5aabfad6 | 769 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e | 770 | char *strend = s + len; |
463ee0b2 LW |
771 | |
772 | while (s < strend) { | |
96827780 | 773 | char tmpbuf[256]; |
1e422769 | 774 | struct stat st; |
96827780 | 775 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e | 776 | s, strend, ':', &i); |
463ee0b2 | 777 | s++; |
96827780 MB |
778 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
779 | || *tmpbuf != '/' | |
c6ed36e1 | 780 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 781 | MgTAINTEDDIR_on(mg); |
1e422769 | 782 | return 0; |
783 | } | |
463ee0b2 | 784 | } |
79072805 LW |
785 | } |
786 | } | |
39e571d4 | 787 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 788 | |
79072805 LW |
789 | return 0; |
790 | } | |
791 | ||
792 | int | |
864dbfa3 | 793 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 794 | { |
2d8e6c8d GS |
795 | STRLEN n_a; |
796 | my_setenv(MgPV(mg,n_a),Nullch); | |
85e6fe83 LW |
797 | return 0; |
798 | } | |
799 | ||
88e89b8a | 800 | int |
864dbfa3 | 801 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 802 | { |
803 | #if defined(VMS) | |
cea2e8a9 | 804 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 805 | #else |
d58bf5aa | 806 | dTHR; |
3280af22 | 807 | if (PL_localizing) { |
fb73857a | 808 | HE* entry; |
2d8e6c8d | 809 | STRLEN n_a; |
fb73857a | 810 | magic_clear_all_env(sv,mg); |
811 | hv_iterinit((HV*)sv); | |
812 | while (entry = hv_iternext((HV*)sv)) { | |
813 | I32 keylen; | |
814 | my_setenv(hv_iterkey(entry, &keylen), | |
2d8e6c8d | 815 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a | 816 | } |
817 | } | |
818 | #endif | |
819 | return 0; | |
820 | } | |
821 | ||
822 | int | |
864dbfa3 | 823 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 824 | { |
3e3baf6d | 825 | #if defined(VMS) |
cea2e8a9 | 826 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d | 827 | #else |
7766f137 GS |
828 | # ifdef PERL_IMPLICIT_SYS |
829 | PerlEnv_clearenv(); | |
830 | # else | |
831 | # ifdef WIN32 | |
3e3baf6d TB |
832 | char *envv = GetEnvironmentStrings(); |
833 | char *cur = envv; | |
834 | STRLEN len; | |
835 | while (*cur) { | |
836 | char *end = strchr(cur,'='); | |
837 | if (end && end != cur) { | |
838 | *end = '\0'; | |
839 | my_setenv(cur,Nullch); | |
840 | *end = '='; | |
ac5c734f | 841 | cur = end + strlen(end+1)+2; |
3e3baf6d TB |
842 | } |
843 | else if ((len = strlen(cur))) | |
844 | cur += len+1; | |
845 | } | |
846 | FreeEnvironmentStrings(envv); | |
7766f137 GS |
847 | # else |
848 | # ifdef CYGWIN | |
2c2d71f5 JH |
849 | I32 i; |
850 | for (i = 0; environ[i]; i++) | |
d702ae42 | 851 | safesysfree(environ[i]); |
7766f137 GS |
852 | # else |
853 | # ifndef PERL_USE_SAFE_PUTENV | |
66b1d557 HM |
854 | I32 i; |
855 | ||
3280af22 | 856 | if (environ == PL_origenviron) |
f2517201 | 857 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 HM |
858 | else |
859 | for (i = 0; environ[i]; i++) | |
f2517201 | 860 | safesysfree(environ[i]); |
7766f137 GS |
861 | # endif /* PERL_USE_SAFE_PUTENV */ |
862 | # endif /* CYGWIN */ | |
f2517201 | 863 | |
66b1d557 HM |
864 | environ[0] = Nullch; |
865 | ||
7766f137 GS |
866 | # endif /* WIN32 */ |
867 | # endif /* PERL_IMPLICIT_SYS */ | |
f2517201 | 868 | #endif /* VMS */ |
3e3baf6d | 869 | return 0; |
66b1d557 HM |
870 | } |
871 | ||
872 | int | |
864dbfa3 | 873 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 874 | { |
875 | I32 i; | |
2d8e6c8d | 876 | STRLEN n_a; |
88e89b8a | 877 | /* Are we fetching a signal entry? */ |
2d8e6c8d | 878 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a | 879 | if (i) { |
22c35a8c GS |
880 | if(PL_psig_ptr[i]) |
881 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 882 | else { |
ff68c719 | 883 | Sighandler_t sigstate = rsignal_state(i); |
884 | ||
88e89b8a | 885 | /* cache state so we don't fetch it again */ |
ff68c719 | 886 | if(sigstate == SIG_IGN) |
88e89b8a | 887 | sv_setpv(sv,"IGNORE"); |
888 | else | |
3280af22 | 889 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c | 890 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 891 | SvTEMP_off(sv); |
892 | } | |
893 | } | |
894 | return 0; | |
895 | } | |
896 | int | |
864dbfa3 | 897 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 898 | { |
899 | I32 i; | |
2d8e6c8d | 900 | STRLEN n_a; |
88e89b8a | 901 | /* Are we clearing a signal entry? */ |
2d8e6c8d | 902 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a | 903 | if (i) { |
22c35a8c GS |
904 | if(PL_psig_ptr[i]) { |
905 | SvREFCNT_dec(PL_psig_ptr[i]); | |
906 | PL_psig_ptr[i]=0; | |
88e89b8a | 907 | } |
22c35a8c GS |
908 | if(PL_psig_name[i]) { |
909 | SvREFCNT_dec(PL_psig_name[i]); | |
910 | PL_psig_name[i]=0; | |
88e89b8a | 911 | } |
912 | } | |
913 | return 0; | |
914 | } | |
3d37d572 | 915 | |
85e6fe83 | 916 | int |
864dbfa3 | 917 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 918 | { |
11343788 | 919 | dTHR; |
79072805 LW |
920 | register char *s; |
921 | I32 i; | |
748a9306 | 922 | SV** svp; |
e72dc28c | 923 | STRLEN len; |
a0d0e21e | 924 | |
e72dc28c | 925 | s = MgPV(mg,len); |
748a9306 LW |
926 | if (*s == '_') { |
927 | if (strEQ(s,"__DIE__")) | |
3280af22 | 928 | svp = &PL_diehook; |
748a9306 | 929 | else if (strEQ(s,"__WARN__")) |
3280af22 | 930 | svp = &PL_warnhook; |
748a9306 | 931 | else |
cea2e8a9 | 932 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 933 | i = 0; |
4633a7c4 LW |
934 | if (*svp) { |
935 | SvREFCNT_dec(*svp); | |
936 | *svp = 0; | |
937 | } | |
748a9306 LW |
938 | } |
939 | else { | |
940 | i = whichsig(s); /* ...no, a brick */ | |
941 | if (!i) { | |
599cee73 | 942 | if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM")) |
cea2e8a9 | 943 | Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s); |
748a9306 LW |
944 | return 0; |
945 | } | |
22c35a8c GS |
946 | SvREFCNT_dec(PL_psig_name[i]); |
947 | SvREFCNT_dec(PL_psig_ptr[i]); | |
948 | PL_psig_ptr[i] = SvREFCNT_inc(sv); | |
88e89b8a | 949 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 950 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 951 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 952 | } |
a0d0e21e | 953 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 | 954 | if (i) |
3280af22 | 955 | (void)rsignal(i, PL_sighandlerp); |
748a9306 LW |
956 | else |
957 | *svp = SvREFCNT_inc(sv); | |
a0d0e21e LW |
958 | return 0; |
959 | } | |
e72dc28c | 960 | s = SvPV_force(sv,len); |
748a9306 LW |
961 | if (strEQ(s,"IGNORE")) { |
962 | if (i) | |
ff68c719 | 963 | (void)rsignal(i, SIG_IGN); |
748a9306 LW |
964 | else |
965 | *svp = 0; | |
966 | } | |
967 | else if (strEQ(s,"DEFAULT") || !*s) { | |
968 | if (i) | |
ff68c719 | 969 | (void)rsignal(i, SIG_DFL); |
748a9306 LW |
970 | else |
971 | *svp = 0; | |
972 | } | |
79072805 | 973 | else { |
5aabfad6 | 974 | /* |
975 | * We should warn if HINT_STRICT_REFS, but without | |
976 | * access to a known hint bit in a known OP, we can't | |
977 | * tell whether HINT_STRICT_REFS is in force or not. | |
978 | */ | |
46fc3d4c | 979 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c | 980 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 | 981 | if (i) |
3280af22 | 982 | (void)rsignal(i, PL_sighandlerp); |
748a9306 LW |
983 | else |
984 | *svp = SvREFCNT_inc(sv); | |
79072805 LW |
985 | } |
986 | return 0; | |
987 | } | |
988 | ||
989 | int | |
864dbfa3 | 990 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 991 | { |
3280af22 | 992 | PL_sub_generation++; |
463ee0b2 LW |
993 | return 0; |
994 | } | |
995 | ||
996 | int | |
864dbfa3 | 997 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 998 | { |
a0d0e21e | 999 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 1000 | PL_amagic_generation++; |
463ee0b2 | 1001 | |
a0d0e21e LW |
1002 | return 0; |
1003 | } | |
463ee0b2 | 1004 | |
946ec16e | 1005 | int |
864dbfa3 | 1006 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1007 | { |
1008 | HV *hv = (HV*)LvTARG(sv); | |
1009 | HE *entry; | |
1010 | I32 i = 0; | |
1011 | ||
1012 | if (hv) { | |
1013 | (void) hv_iterinit(hv); | |
33c27489 | 1014 | if (! SvTIED_mg((SV*)hv, 'P')) |
6ff81951 GS |
1015 | i = HvKEYS(hv); |
1016 | else { | |
1017 | /*SUPPRESS 560*/ | |
1018 | while (entry = hv_iternext(hv)) { | |
1019 | i++; | |
1020 | } | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | sv_setiv(sv, (IV)i); | |
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | int | |
864dbfa3 | 1029 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1030 | { |
1031 | if (LvTARG(sv)) { | |
1032 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1033 | } |
1034 | return 0; | |
93965878 | 1035 | } |
946ec16e | 1036 | |
e336de0d | 1037 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1038 | STATIC int |
cea2e8a9 | 1039 | S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
a0d0e21e LW |
1040 | { |
1041 | dSP; | |
463ee0b2 | 1042 | |
924508f0 GS |
1043 | PUSHMARK(SP); |
1044 | EXTEND(SP, n); | |
33c27489 | 1045 | PUSHs(SvTIED_obj(sv, mg)); |
93965878 NIS |
1046 | if (n > 1) { |
1047 | if (mg->mg_ptr) { | |
565764a8 | 1048 | if (mg->mg_len >= 0) |
79cb57f6 | 1049 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1050 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1051 | PUSHs((SV*)mg->mg_ptr); |
1052 | } | |
1053 | else if (mg->mg_type == 'p') { | |
565764a8 | 1054 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1055 | } |
1056 | } | |
1057 | if (n > 2) { | |
1058 | PUSHs(val); | |
88e89b8a | 1059 | } |
463ee0b2 LW |
1060 | PUTBACK; |
1061 | ||
864dbfa3 | 1062 | return call_method(meth, flags); |
946ec16e | 1063 | } |
1064 | ||
76e3520e | 1065 | STATIC int |
cea2e8a9 | 1066 | S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth) |
a0d0e21e LW |
1067 | { |
1068 | dSP; | |
463ee0b2 | 1069 | |
a0d0e21e LW |
1070 | ENTER; |
1071 | SAVETMPS; | |
e788e7d3 | 1072 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1073 | |
33c27489 | 1074 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1075 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1076 | } |
463ee0b2 | 1077 | |
d3acc0f7 | 1078 | POPSTACK; |
a0d0e21e LW |
1079 | FREETMPS; |
1080 | LEAVE; | |
1081 | return 0; | |
1082 | } | |
463ee0b2 | 1083 | |
a0d0e21e | 1084 | int |
864dbfa3 | 1085 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1086 | { |
1087 | magic_methpack(sv,mg,"FETCH"); | |
1088 | if (mg->mg_ptr) | |
1089 | mg->mg_flags |= MGf_GSKIP; | |
463ee0b2 LW |
1090 | return 0; |
1091 | } | |
1092 | ||
1093 | int | |
864dbfa3 | 1094 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d GS |
1095 | { |
1096 | dSP; | |
a60c0954 | 1097 | ENTER; |
e788e7d3 | 1098 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1099 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1100 | POPSTACK; |
a60c0954 | 1101 | LEAVE; |
463ee0b2 LW |
1102 | return 0; |
1103 | } | |
1104 | ||
1105 | int | |
864dbfa3 | 1106 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1107 | { |
a0d0e21e LW |
1108 | return magic_methpack(sv,mg,"DELETE"); |
1109 | } | |
463ee0b2 | 1110 | |
93965878 NIS |
1111 | |
1112 | U32 | |
864dbfa3 | 1113 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
93965878 | 1114 | { |
e336de0d | 1115 | dSP; |
93965878 NIS |
1116 | U32 retval = 0; |
1117 | ||
1118 | ENTER; | |
1119 | SAVETMPS; | |
e788e7d3 | 1120 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1121 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1122 | sv = *PL_stack_sp--; |
a60c0954 | 1123 | retval = (U32) SvIV(sv)-1; |
93965878 | 1124 | } |
d3acc0f7 | 1125 | POPSTACK; |
93965878 NIS |
1126 | FREETMPS; |
1127 | LEAVE; | |
1128 | return retval; | |
1129 | } | |
1130 | ||
cea2e8a9 GS |
1131 | int |
1132 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e LW |
1133 | { |
1134 | dSP; | |
463ee0b2 | 1135 | |
e336de0d | 1136 | ENTER; |
e788e7d3 | 1137 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1138 | PUSHMARK(SP); |
33c27489 | 1139 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1140 | PUTBACK; |
864dbfa3 | 1141 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1142 | POPSTACK; |
a60c0954 | 1143 | LEAVE; |
463ee0b2 LW |
1144 | return 0; |
1145 | } | |
1146 | ||
1147 | int | |
864dbfa3 | 1148 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1149 | { |
463ee0b2 | 1150 | dSP; |
dff6d3cd | 1151 | const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1152 | |
1153 | ENTER; | |
a0d0e21e | 1154 | SAVETMPS; |
e788e7d3 | 1155 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1156 | PUSHMARK(SP); |
1157 | EXTEND(SP, 2); | |
33c27489 | 1158 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1159 | if (SvOK(key)) |
1160 | PUSHs(key); | |
1161 | PUTBACK; | |
1162 | ||
864dbfa3 | 1163 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1164 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1165 | |
d3acc0f7 | 1166 | POPSTACK; |
a0d0e21e LW |
1167 | FREETMPS; |
1168 | LEAVE; | |
79072805 LW |
1169 | return 0; |
1170 | } | |
1171 | ||
1172 | int | |
864dbfa3 | 1173 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1174 | { |
1175 | return magic_methpack(sv,mg,"EXISTS"); | |
1176 | } | |
1177 | ||
1178 | int | |
864dbfa3 | 1179 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1180 | { |
11343788 | 1181 | dTHR; |
79072805 LW |
1182 | OP *o; |
1183 | I32 i; | |
1184 | GV* gv; | |
1185 | SV** svp; | |
2d8e6c8d | 1186 | STRLEN n_a; |
79072805 | 1187 | |
3280af22 | 1188 | gv = PL_DBline; |
79072805 | 1189 | i = SvTRUE(sv); |
188ea221 | 1190 | svp = av_fetch(GvAV(gv), |
2d8e6c8d | 1191 | atoi(MgPV(mg,n_a)), FALSE); |
57b2e452 | 1192 | if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp)))) |
93a17b20 | 1193 | o->op_private = i; |
0453d815 PM |
1194 | else if (ckWARN_d(WARN_INTERNAL)) |
1195 | Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n"); | |
79072805 LW |
1196 | return 0; |
1197 | } | |
1198 | ||
1199 | int | |
864dbfa3 | 1200 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1201 | { |
0f15f207 | 1202 | dTHR; |
3280af22 | 1203 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 LW |
1204 | return 0; |
1205 | } | |
1206 | ||
1207 | int | |
864dbfa3 | 1208 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1209 | { |
0f15f207 | 1210 | dTHR; |
3280af22 | 1211 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e LW |
1212 | return 0; |
1213 | } | |
1214 | ||
1215 | int | |
864dbfa3 | 1216 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1217 | { |
1218 | SV* lsv = LvTARG(sv); | |
1219 | ||
1220 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { | |
1221 | mg = mg_find(lsv, 'g'); | |
565764a8 | 1222 | if (mg && mg->mg_len >= 0) { |
0f15f207 | 1223 | dTHR; |
a0ed51b3 LW |
1224 | I32 i = mg->mg_len; |
1225 | if (IN_UTF8) | |
1226 | sv_pos_b2u(lsv, &i); | |
1227 | sv_setiv(sv, i + PL_curcop->cop_arybase); | |
a0d0e21e LW |
1228 | return 0; |
1229 | } | |
1230 | } | |
1231 | (void)SvOK_off(sv); | |
1232 | return 0; | |
1233 | } | |
1234 | ||
1235 | int | |
864dbfa3 | 1236 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1237 | { |
1238 | SV* lsv = LvTARG(sv); | |
1239 | SSize_t pos; | |
1240 | STRLEN len; | |
a0ed51b3 | 1241 | STRLEN ulen; |
c485e607 | 1242 | dTHR; |
a0d0e21e LW |
1243 | |
1244 | mg = 0; | |
1245 | ||
1246 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) | |
1247 | mg = mg_find(lsv, 'g'); | |
1248 | if (!mg) { | |
1249 | if (!SvOK(sv)) | |
1250 | return 0; | |
1251 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); | |
1252 | mg = mg_find(lsv, 'g'); | |
1253 | } | |
1254 | else if (!SvOK(sv)) { | |
565764a8 | 1255 | mg->mg_len = -1; |
a0d0e21e LW |
1256 | return 0; |
1257 | } | |
1258 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1259 | ||
c485e607 | 1260 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 LW |
1261 | |
1262 | if (IN_UTF8) { | |
1263 | ulen = sv_len_utf8(lsv); | |
1264 | if (ulen) | |
1265 | len = ulen; | |
1266 | else | |
1267 | ulen = 0; | |
1268 | } | |
1269 | ||
a0d0e21e LW |
1270 | if (pos < 0) { |
1271 | pos += len; | |
1272 | if (pos < 0) | |
1273 | pos = 0; | |
1274 | } | |
1275 | else if (pos > len) | |
1276 | pos = len; | |
a0ed51b3 LW |
1277 | |
1278 | if (ulen) { | |
1279 | I32 p = pos; | |
1280 | sv_pos_u2b(lsv, &p, 0); | |
1281 | pos = p; | |
1282 | } | |
1283 | ||
565764a8 | 1284 | mg->mg_len = pos; |
71be2cbc | 1285 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e | 1286 | |
79072805 LW |
1287 | return 0; |
1288 | } | |
1289 | ||
1290 | int | |
864dbfa3 | 1291 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1292 | { |
8646b087 | 1293 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1294 | SvFAKE_off(sv); | |
946ec16e | 1295 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 | 1296 | SvFAKE_on(sv); |
1297 | } | |
1298 | else | |
946ec16e | 1299 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 LW |
1300 | return 0; |
1301 | } | |
1302 | ||
1303 | int | |
864dbfa3 | 1304 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1305 | { |
1306 | register char *s; | |
1307 | GV* gv; | |
2d8e6c8d | 1308 | STRLEN n_a; |
79072805 LW |
1309 | |
1310 | if (!SvOK(sv)) | |
1311 | return 0; | |
2d8e6c8d | 1312 | s = SvPV(sv, n_a); |
79072805 LW |
1313 | if (*s == '*' && s[1]) |
1314 | s++; | |
85e6fe83 | 1315 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
1316 | if (sv == (SV*)gv) |
1317 | return 0; | |
1318 | if (GvGP(sv)) | |
88e89b8a | 1319 | gp_free((GV*)sv); |
79072805 | 1320 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1321 | return 0; |
1322 | } | |
1323 | ||
1324 | int | |
864dbfa3 | 1325 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1326 | { |
1327 | STRLEN len; | |
1328 | SV *lsv = LvTARG(sv); | |
1329 | char *tmps = SvPV(lsv,len); | |
1330 | I32 offs = LvTARGOFF(sv); | |
1331 | I32 rem = LvTARGLEN(sv); | |
1332 | ||
1333 | if (offs > len) | |
1334 | offs = len; | |
1335 | if (rem + offs > len) | |
1336 | rem = len - offs; | |
1337 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
1338 | return 0; | |
1339 | } | |
1340 | ||
1341 | int | |
864dbfa3 | 1342 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1343 | { |
8990e307 LW |
1344 | STRLEN len; |
1345 | char *tmps = SvPV(sv,len); | |
1346 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); | |
79072805 LW |
1347 | return 0; |
1348 | } | |
1349 | ||
1350 | int | |
864dbfa3 | 1351 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1352 | { |
a863c7d1 | 1353 | dTHR; |
565764a8 DL |
1354 | TAINT_IF((mg->mg_len & 1) || |
1355 | (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */ | |
463ee0b2 LW |
1356 | return 0; |
1357 | } | |
1358 | ||
1359 | int | |
864dbfa3 | 1360 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1361 | { |
11343788 | 1362 | dTHR; |
3280af22 NIS |
1363 | if (PL_localizing) { |
1364 | if (PL_localizing == 1) | |
565764a8 | 1365 | mg->mg_len <<= 1; |
748a9306 | 1366 | else |
565764a8 | 1367 | mg->mg_len >>= 1; |
a0d0e21e | 1368 | } |
3280af22 | 1369 | else if (PL_tainted) |
565764a8 | 1370 | mg->mg_len |= 1; |
748a9306 | 1371 | else |
565764a8 | 1372 | mg->mg_len &= ~1; |
463ee0b2 LW |
1373 | return 0; |
1374 | } | |
1375 | ||
1376 | int | |
864dbfa3 | 1377 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1378 | { |
1379 | SV *lsv = LvTARG(sv); | |
6ff81951 GS |
1380 | |
1381 | if (!lsv) { | |
1382 | SvOK_off(sv); | |
1383 | return 0; | |
1384 | } | |
6ff81951 | 1385 | |
81e118e0 | 1386 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 GS |
1387 | return 0; |
1388 | } | |
1389 | ||
1390 | int | |
864dbfa3 | 1391 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1392 | { |
1393 | do_vecset(sv); /* XXX slurp this routine */ | |
1394 | return 0; | |
1395 | } | |
1396 | ||
1397 | int | |
864dbfa3 | 1398 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 1399 | { |
71be2cbc | 1400 | SV *targ = Nullsv; |
5f05dabc | 1401 | if (LvTARGLEN(sv)) { |
68dc0745 | 1402 | if (mg->mg_obj) { |
74e13ce4 GS |
1403 | SV *ahv = LvTARG(sv); |
1404 | if (SvTYPE(ahv) == SVt_PVHV) { | |
1405 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); | |
1406 | if (he) | |
1407 | targ = HeVAL(he); | |
1408 | } | |
1409 | else { | |
1410 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0); | |
1411 | if (svp) | |
1412 | targ = *svp; | |
1413 | } | |
68dc0745 | 1414 | } |
1415 | else { | |
3c78fafa | 1416 | AV* av = (AV*)LvTARG(sv); |
68dc0745 | 1417 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1418 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
1419 | } | |
3280af22 | 1420 | if (targ && targ != &PL_sv_undef) { |
e858de61 | 1421 | dTHR; /* just for SvREFCNT_dec */ |
68dc0745 | 1422 | /* somebody else defined it for us */ |
1423 | SvREFCNT_dec(LvTARG(sv)); | |
1424 | LvTARG(sv) = SvREFCNT_inc(targ); | |
1425 | LvTARGLEN(sv) = 0; | |
1426 | SvREFCNT_dec(mg->mg_obj); | |
1427 | mg->mg_obj = Nullsv; | |
1428 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
1429 | } | |
5f05dabc | 1430 | } |
71be2cbc | 1431 | else |
1432 | targ = LvTARG(sv); | |
3280af22 | 1433 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 1434 | return 0; |
1435 | } | |
1436 | ||
1437 | int | |
864dbfa3 | 1438 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 1439 | { |
1440 | if (LvTARGLEN(sv)) | |
68dc0745 | 1441 | vivify_defelem(sv); |
1442 | if (LvTARG(sv)) { | |
5f05dabc | 1443 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 1444 | SvSETMAGIC(LvTARG(sv)); |
1445 | } | |
5f05dabc | 1446 | return 0; |
1447 | } | |
1448 | ||
71be2cbc | 1449 | void |
864dbfa3 | 1450 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 1451 | { |
e858de61 | 1452 | dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/ |
74e13ce4 GS |
1453 | MAGIC *mg; |
1454 | SV *value = Nullsv; | |
71be2cbc | 1455 | |
68dc0745 | 1456 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y'))) |
71be2cbc | 1457 | return; |
68dc0745 | 1458 | if (mg->mg_obj) { |
74e13ce4 | 1459 | SV *ahv = LvTARG(sv); |
2d8e6c8d | 1460 | STRLEN n_a; |
74e13ce4 | 1461 | if (SvTYPE(ahv) == SVt_PVHV) { |
af7f9c15 | 1462 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 GS |
1463 | if (he) |
1464 | value = HeVAL(he); | |
1465 | } | |
1466 | else { | |
af7f9c15 | 1467 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 GS |
1468 | if (svp) |
1469 | value = *svp; | |
1470 | } | |
3280af22 | 1471 | if (!value || value == &PL_sv_undef) |
cea2e8a9 | 1472 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc | 1473 | } |
68dc0745 | 1474 | else { |
1475 | AV* av = (AV*)LvTARG(sv); | |
5aabfad6 | 1476 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 | 1477 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1478 | else { | |
1479 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); | |
3280af22 | 1480 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 1481 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 1482 | } |
1483 | } | |
3e3baf6d | 1484 | (void)SvREFCNT_inc(value); |
68dc0745 | 1485 | SvREFCNT_dec(LvTARG(sv)); |
1486 | LvTARG(sv) = value; | |
71be2cbc | 1487 | LvTARGLEN(sv) = 0; |
68dc0745 | 1488 | SvREFCNT_dec(mg->mg_obj); |
1489 | mg->mg_obj = Nullsv; | |
1490 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
5f05dabc | 1491 | } |
1492 | ||
1493 | int | |
864dbfa3 | 1494 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 GS |
1495 | { |
1496 | AV *av = (AV*)mg->mg_obj; | |
1497 | SV **svp = AvARRAY(av); | |
1498 | I32 i = AvFILLp(av); | |
1499 | while (i >= 0) { | |
1500 | if (svp[i] && svp[i] != &PL_sv_undef) { | |
1501 | if (!SvWEAKREF(svp[i])) | |
cea2e8a9 | 1502 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 GS |
1503 | /* XXX Should we check that it hasn't changed? */ |
1504 | SvRV(svp[i]) = 0; | |
1505 | SvOK_off(svp[i]); | |
1506 | SvWEAKREF_off(svp[i]); | |
1507 | svp[i] = &PL_sv_undef; | |
1508 | } | |
1509 | i--; | |
1510 | } | |
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | int | |
864dbfa3 | 1515 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 1516 | { |
565764a8 | 1517 | mg->mg_len = -1; |
c6496cc7 | 1518 | SvSCREAM_off(sv); |
93a17b20 LW |
1519 | return 0; |
1520 | } | |
1521 | ||
1522 | int | |
864dbfa3 | 1523 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1524 | { |
463ee0b2 | 1525 | sv_unmagic(sv, 'B'); |
79072805 LW |
1526 | SvVALID_off(sv); |
1527 | return 0; | |
1528 | } | |
1529 | ||
1530 | int | |
864dbfa3 | 1531 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 1532 | { |
1533 | sv_unmagic(sv, 'f'); | |
1534 | SvCOMPILED_off(sv); | |
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | int | |
864dbfa3 | 1539 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1540 | { |
1541 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
1542 | ||
1543 | if (uf && uf->uf_set) | |
1544 | (*uf->uf_set)(uf->uf_index, sv); | |
1545 | return 0; | |
1546 | } | |
1547 | ||
c277df42 | 1548 | int |
864dbfa3 | 1549 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 IZ |
1550 | { |
1551 | regexp *re = (regexp *)mg->mg_obj; | |
1552 | ReREFCNT_dec(re); | |
1553 | return 0; | |
1554 | } | |
1555 | ||
7a4c00b4 | 1556 | #ifdef USE_LOCALE_COLLATE |
79072805 | 1557 | int |
864dbfa3 | 1558 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 1559 | { |
1560 | /* | |
838b5b74 | 1561 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 1562 | * and vanished with a faint plop. |
1563 | */ | |
7a4c00b4 | 1564 | if (mg->mg_ptr) { |
1565 | Safefree(mg->mg_ptr); | |
1566 | mg->mg_ptr = NULL; | |
565764a8 | 1567 | mg->mg_len = -1; |
7a4c00b4 | 1568 | } |
bbce6d69 | 1569 | return 0; |
1570 | } | |
7a4c00b4 | 1571 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 1572 | |
1573 | int | |
864dbfa3 | 1574 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1575 | { |
11343788 | 1576 | dTHR; |
79072805 LW |
1577 | register char *s; |
1578 | I32 i; | |
8990e307 | 1579 | STRLEN len; |
79072805 | 1580 | switch (*mg->mg_ptr) { |
748a9306 | 1581 | case '\001': /* ^A */ |
3280af22 | 1582 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 1583 | break; |
49460fe6 NIS |
1584 | case '\003': /* ^C */ |
1585 | PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1586 | break; | |
1587 | ||
79072805 | 1588 | case '\004': /* ^D */ |
3280af22 | 1589 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 LW |
1590 | DEBUG_x(dump_all()); |
1591 | break; | |
28f23441 | 1592 | case '\005': /* ^E */ |
cd39f2b6 JH |
1593 | #ifdef MACOS_TRADITIONAL |
1594 | gLastMacOSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
28f23441 | 1595 | #else |
cd39f2b6 JH |
1596 | # ifdef VMS |
1597 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
048c1ddf | 1598 | # else |
cd39f2b6 JH |
1599 | # ifdef WIN32 |
1600 | SetLastError( SvIV(sv) ); | |
1601 | # else | |
1602 | # ifndef OS2 | |
f86702cc | 1603 | /* will anyone ever use this? */ |
1604 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); | |
cd39f2b6 | 1605 | # endif |
048c1ddf IZ |
1606 | # endif |
1607 | # endif | |
22fae026 | 1608 | #endif |
28f23441 | 1609 | break; |
79072805 | 1610 | case '\006': /* ^F */ |
3280af22 | 1611 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 1612 | break; |
a0d0e21e | 1613 | case '\010': /* ^H */ |
3280af22 | 1614 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e | 1615 | break; |
9d116dd7 | 1616 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
1617 | if (PL_inplace) |
1618 | Safefree(PL_inplace); | |
79072805 | 1619 | if (SvOK(sv)) |
2d8e6c8d | 1620 | PL_inplace = savepv(SvPV(sv,len)); |
79072805 | 1621 | else |
3280af22 | 1622 | PL_inplace = Nullch; |
79072805 | 1623 | break; |
28f23441 | 1624 | case '\017': /* ^O */ |
3280af22 NIS |
1625 | if (PL_osname) |
1626 | Safefree(PL_osname); | |
28f23441 | 1627 | if (SvOK(sv)) |
2d8e6c8d | 1628 | PL_osname = savepv(SvPV(sv,len)); |
28f23441 | 1629 | else |
3280af22 | 1630 | PL_osname = Nullch; |
28f23441 | 1631 | break; |
79072805 | 1632 | case '\020': /* ^P */ |
3280af22 | 1633 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1ee4443e IZ |
1634 | if (PL_perldb && !PL_DBsingle) |
1635 | init_debugger(); | |
79072805 LW |
1636 | break; |
1637 | case '\024': /* ^T */ | |
88e89b8a | 1638 | #ifdef BIG_TIME |
6b88bc9c | 1639 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 1640 | #else |
3280af22 | 1641 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a | 1642 | #endif |
79072805 | 1643 | break; |
4438c4b7 JH |
1644 | case '\027': /* ^W & $^Warnings */ |
1645 | if (*(mg->mg_ptr+1) == '\0') { | |
1646 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
1647 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1648 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) | |
0453d815 | 1649 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 1650 | } |
599cee73 | 1651 | } |
4438c4b7 JH |
1652 | else if (strEQ(mg->mg_ptr, "\027arnings")) { |
1653 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
1654 | if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) { | |
1655 | PL_compiling.cop_warnings = WARN_ALL; | |
1656 | PL_dowarn |= G_WARN_ONCE ; | |
1657 | } | |
1658 | else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize)) | |
1659 | PL_compiling.cop_warnings = WARN_NONE; | |
1660 | else { | |
1661 | if (specialWARN(PL_compiling.cop_warnings)) | |
1662 | PL_compiling.cop_warnings = newSVsv(sv) ; | |
1663 | else | |
1664 | sv_setsv(PL_compiling.cop_warnings, sv); | |
1665 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) | |
1666 | PL_dowarn |= G_WARN_ONCE ; | |
1667 | } | |
1668 | } | |
971a9dd3 | 1669 | } |
79072805 LW |
1670 | break; |
1671 | case '.': | |
3280af22 NIS |
1672 | if (PL_localizing) { |
1673 | if (PL_localizing == 1) | |
7766f137 | 1674 | SAVESPTR(PL_last_in_gv); |
748a9306 | 1675 | } |
3280af22 NIS |
1676 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
1677 | IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv); | |
79072805 LW |
1678 | break; |
1679 | case '^': | |
3280af22 | 1680 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 1681 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 1682 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
1683 | break; |
1684 | case '~': | |
3280af22 | 1685 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 1686 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 1687 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
1688 | break; |
1689 | case '=': | |
3280af22 | 1690 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1691 | break; |
1692 | case '-': | |
3280af22 NIS |
1693 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1694 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
1695 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
1696 | break; |
1697 | case '%': | |
3280af22 | 1698 | IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1699 | break; |
1700 | case '|': | |
4b65379b | 1701 | { |
3280af22 | 1702 | IO *io = GvIOp(PL_defoutgv); |
4b65379b CS |
1703 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
1704 | IoFLAGS(io) &= ~IOf_FLUSH; | |
1705 | else { | |
1706 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
1707 | PerlIO *ofp = IoOFP(io); | |
1708 | if (ofp) | |
1709 | (void)PerlIO_flush(ofp); | |
1710 | IoFLAGS(io) |= IOf_FLUSH; | |
1711 | } | |
1712 | } | |
79072805 LW |
1713 | } |
1714 | break; | |
1715 | case '*': | |
463ee0b2 | 1716 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
3280af22 | 1717 | PL_multiline = (i != 0); |
79072805 LW |
1718 | break; |
1719 | case '/': | |
3280af22 NIS |
1720 | SvREFCNT_dec(PL_nrs); |
1721 | PL_nrs = newSVsv(sv); | |
1722 | SvREFCNT_dec(PL_rs); | |
1723 | PL_rs = SvREFCNT_inc(PL_nrs); | |
79072805 LW |
1724 | break; |
1725 | case '\\': | |
3280af22 NIS |
1726 | if (PL_ors) |
1727 | Safefree(PL_ors); | |
009c130f GS |
1728 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
1729 | s = SvPV(sv,PL_orslen); | |
1730 | PL_ors = savepvn(s,PL_orslen); | |
1731 | } | |
e3c19b7b | 1732 | else { |
3280af22 NIS |
1733 | PL_ors = Nullch; |
1734 | PL_orslen = 0; | |
e3c19b7b | 1735 | } |
79072805 LW |
1736 | break; |
1737 | case ',': | |
3280af22 NIS |
1738 | if (PL_ofs) |
1739 | Safefree(PL_ofs); | |
1740 | PL_ofs = savepv(SvPV(sv, PL_ofslen)); | |
79072805 LW |
1741 | break; |
1742 | case '#': | |
3280af22 NIS |
1743 | if (PL_ofmt) |
1744 | Safefree(PL_ofmt); | |
2d8e6c8d | 1745 | PL_ofmt = savepv(SvPV(sv,len)); |
79072805 LW |
1746 | break; |
1747 | case '[': | |
3280af22 | 1748 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1749 | break; |
1750 | case '?': | |
ff0cee69 | 1751 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
1752 | if (PL_localizing == 2) { |
1753 | PL_statusvalue = LvTARGOFF(sv); | |
1754 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 1755 | } |
1756 | else | |
1757 | #endif | |
1758 | #ifdef VMSISH_STATUS | |
1759 | if (VMSISH_STATUS) | |
1760 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); | |
1761 | else | |
1762 | #endif | |
1763 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
79072805 LW |
1764 | break; |
1765 | case '!': | |
78987ded | 1766 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
f86702cc | 1767 | (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno); |
79072805 LW |
1768 | break; |
1769 | case '<': | |
3280af22 NIS |
1770 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1771 | if (PL_delaymagic) { | |
1772 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
1773 | break; /* don't do magic till later */ |
1774 | } | |
1775 | #ifdef HAS_SETRUID | |
b28d0864 | 1776 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
1777 | #else |
1778 | #ifdef HAS_SETREUID | |
3280af22 | 1779 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 1780 | #else |
85e6fe83 | 1781 | #ifdef HAS_SETRESUID |
b28d0864 | 1782 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 1783 | #else |
b28d0864 NIS |
1784 | if (PL_uid == PL_euid) /* special case $< = $> */ |
1785 | (void)PerlProc_setuid(PL_uid); | |
a0d0e21e | 1786 | else { |
d8eceb89 | 1787 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 1788 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 1789 | } |
79072805 LW |
1790 | #endif |
1791 | #endif | |
85e6fe83 | 1792 | #endif |
d8eceb89 | 1793 | PL_uid = PerlProc_getuid(); |
3280af22 | 1794 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1795 | break; |
1796 | case '>': | |
3280af22 NIS |
1797 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1798 | if (PL_delaymagic) { | |
1799 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
1800 | break; /* don't do magic till later */ |
1801 | } | |
1802 | #ifdef HAS_SETEUID | |
3280af22 | 1803 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
1804 | #else |
1805 | #ifdef HAS_SETREUID | |
b28d0864 | 1806 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
1807 | #else |
1808 | #ifdef HAS_SETRESUID | |
6b88bc9c | 1809 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 1810 | #else |
b28d0864 NIS |
1811 | if (PL_euid == PL_uid) /* special case $> = $< */ |
1812 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 1813 | else { |
e8ee3774 | 1814 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 1815 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 1816 | } |
79072805 LW |
1817 | #endif |
1818 | #endif | |
85e6fe83 | 1819 | #endif |
d8eceb89 | 1820 | PL_euid = PerlProc_geteuid(); |
3280af22 | 1821 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1822 | break; |
1823 | case '(': | |
3280af22 NIS |
1824 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1825 | if (PL_delaymagic) { | |
1826 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
1827 | break; /* don't do magic till later */ |
1828 | } | |
1829 | #ifdef HAS_SETRGID | |
b28d0864 | 1830 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
1831 | #else |
1832 | #ifdef HAS_SETREGID | |
3280af22 | 1833 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
1834 | #else |
1835 | #ifdef HAS_SETRESGID | |
b28d0864 | 1836 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 1837 | #else |
b28d0864 NIS |
1838 | if (PL_gid == PL_egid) /* special case $( = $) */ |
1839 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 1840 | else { |
d8eceb89 | 1841 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 1842 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 1843 | } |
79072805 LW |
1844 | #endif |
1845 | #endif | |
85e6fe83 | 1846 | #endif |
d8eceb89 | 1847 | PL_gid = PerlProc_getgid(); |
3280af22 | 1848 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1849 | break; |
1850 | case ')': | |
5cd24f17 | 1851 | #ifdef HAS_SETGROUPS |
1852 | { | |
2d8e6c8d | 1853 | char *p = SvPV(sv, len); |
5cd24f17 | 1854 | Groups_t gary[NGROUPS]; |
1855 | ||
5cd24f17 | 1856 | while (isSPACE(*p)) |
1857 | ++p; | |
2d4389e4 | 1858 | PL_egid = Atol(p); |
5cd24f17 | 1859 | for (i = 0; i < NGROUPS; ++i) { |
1860 | while (*p && !isSPACE(*p)) | |
1861 | ++p; | |
1862 | while (isSPACE(*p)) | |
1863 | ++p; | |
1864 | if (!*p) | |
1865 | break; | |
2d4389e4 | 1866 | gary[i] = Atol(p); |
5cd24f17 | 1867 | } |
8cc95fdb | 1868 | if (i) |
1869 | (void)setgroups(i, gary); | |
5cd24f17 | 1870 | } |
1871 | #else /* HAS_SETGROUPS */ | |
b28d0864 | 1872 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 | 1873 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
1874 | if (PL_delaymagic) { |
1875 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
1876 | break; /* don't do magic till later */ |
1877 | } | |
1878 | #ifdef HAS_SETEGID | |
3280af22 | 1879 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
1880 | #else |
1881 | #ifdef HAS_SETREGID | |
b28d0864 | 1882 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
1883 | #else |
1884 | #ifdef HAS_SETRESGID | |
b28d0864 | 1885 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 1886 | #else |
b28d0864 NIS |
1887 | if (PL_egid == PL_gid) /* special case $) = $( */ |
1888 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 1889 | else { |
d8eceb89 | 1890 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 1891 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 1892 | } |
79072805 LW |
1893 | #endif |
1894 | #endif | |
85e6fe83 | 1895 | #endif |
d8eceb89 | 1896 | PL_egid = PerlProc_getegid(); |
3280af22 | 1897 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1898 | break; |
1899 | case ':': | |
2d8e6c8d | 1900 | PL_chopset = SvPV_force(sv,len); |
79072805 | 1901 | break; |
cd39f2b6 | 1902 | #ifndef MACOS_TRADITIONAL |
79072805 | 1903 | case '0': |
3280af22 NIS |
1904 | if (!PL_origalen) { |
1905 | s = PL_origargv[0]; | |
79072805 LW |
1906 | s += strlen(s); |
1907 | /* See if all the arguments are contiguous in memory */ | |
3280af22 NIS |
1908 | for (i = 1; i < PL_origargc; i++) { |
1909 | if (PL_origargv[i] == s + 1 | |
fb73857a | 1910 | #ifdef OS2 |
6b88bc9c | 1911 | || PL_origargv[i] == s + 2 |
fb73857a | 1912 | #endif |
1913 | ) | |
379c4362 GS |
1914 | { |
1915 | ++s; | |
1916 | s += strlen(s); /* this one is ok too */ | |
1917 | } | |
fb73857a | 1918 | else |
1919 | break; | |
79072805 | 1920 | } |
bbce6d69 | 1921 | /* can grab env area too? */ |
3280af22 | 1922 | if (PL_origenviron && (PL_origenviron[0] == s + 1 |
fb73857a | 1923 | #ifdef OS2 |
6b88bc9c | 1924 | || (PL_origenviron[0] == s + 9 && (s += 8)) |
fb73857a | 1925 | #endif |
1926 | )) { | |
66b1d557 | 1927 | my_setenv("NoNe SuCh", Nullch); |
79072805 | 1928 | /* force copy of environment */ |
3280af22 | 1929 | for (i = 0; PL_origenviron[i]; i++) |
379c4362 GS |
1930 | if (PL_origenviron[i] == s + 1) { |
1931 | ++s; | |
1932 | s += strlen(s); | |
1933 | } | |
fb73857a | 1934 | else |
1935 | break; | |
79072805 | 1936 | } |
3280af22 | 1937 | PL_origalen = s - PL_origargv[0]; |
79072805 | 1938 | } |
a0d0e21e | 1939 | s = SvPV_force(sv,len); |
8990e307 | 1940 | i = len; |
3280af22 NIS |
1941 | if (i >= PL_origalen) { |
1942 | i = PL_origalen; | |
fb73857a | 1943 | /* don't allow system to limit $0 seen by script */ |
1944 | /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */ | |
3280af22 NIS |
1945 | Copy(s, PL_origargv[0], i, char); |
1946 | s = PL_origargv[0]+i; | |
fb73857a | 1947 | *s = '\0'; |
79072805 LW |
1948 | } |
1949 | else { | |
3280af22 NIS |
1950 | Copy(s, PL_origargv[0], i, char); |
1951 | s = PL_origargv[0]+i; | |
79072805 | 1952 | *s++ = '\0'; |
3280af22 | 1953 | while (++i < PL_origalen) |
8990e307 | 1954 | *s++ = ' '; |
3280af22 NIS |
1955 | s = PL_origargv[0]+i; |
1956 | for (i = 1; i < PL_origargc; i++) | |
1957 | PL_origargv[i] = Nullch; | |
79072805 LW |
1958 | } |
1959 | break; | |
cd39f2b6 | 1960 | #endif |
a863c7d1 MB |
1961 | #ifdef USE_THREADS |
1962 | case '@': | |
38a03e6e | 1963 | sv_setsv(thr->errsv, sv); |
a863c7d1 MB |
1964 | break; |
1965 | #endif /* USE_THREADS */ | |
79072805 LW |
1966 | } |
1967 | return 0; | |
1968 | } | |
1969 | ||
f93b4edd MB |
1970 | #ifdef USE_THREADS |
1971 | int | |
864dbfa3 | 1972 | Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg) |
f93b4edd MB |
1973 | { |
1974 | dTHR; | |
b900a521 JH |
1975 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1976 | "0x%"UVxf": magic_mutexfree 0x%"UVxf"\n", | |
1977 | PTR2UV(thr), PTR2UV(sv));) | |
f93b4edd | 1978 | if (MgOWNER(mg)) |
cea2e8a9 | 1979 | Perl_croak(aTHX_ "panic: magic_mutexfree"); |
f93b4edd MB |
1980 | MUTEX_DESTROY(MgMUTEXP(mg)); |
1981 | COND_DESTROY(MgCONDP(mg)); | |
1982 | return 0; | |
1983 | } | |
1984 | #endif /* USE_THREADS */ | |
1985 | ||
79072805 | 1986 | I32 |
864dbfa3 | 1987 | Perl_whichsig(pTHX_ char *sig) |
79072805 LW |
1988 | { |
1989 | register char **sigv; | |
1990 | ||
22c35a8c | 1991 | for (sigv = PL_sig_name+1; *sigv; sigv++) |
79072805 | 1992 | if (strEQ(sig,*sigv)) |
22c35a8c | 1993 | return PL_sig_num[sigv - PL_sig_name]; |
79072805 LW |
1994 | #ifdef SIGCLD |
1995 | if (strEQ(sig,"CHLD")) | |
1996 | return SIGCLD; | |
1997 | #endif | |
1998 | #ifdef SIGCHLD | |
1999 | if (strEQ(sig,"CLD")) | |
2000 | return SIGCHLD; | |
2001 | #endif | |
2002 | return 0; | |
2003 | } | |
2004 | ||
84902520 TB |
2005 | static SV* sig_sv; |
2006 | ||
ecfc5424 | 2007 | Signal_t |
cea2e8a9 | 2008 | Perl_sighandler(int sig) |
79072805 | 2009 | { |
cea2e8a9 | 2010 | dTHX; |
79072805 | 2011 | dSP; |
00d579c5 | 2012 | GV *gv = Nullgv; |
a0d0e21e | 2013 | HV *st; |
3280af22 | 2014 | SV *sv, *tSv = PL_Sv; |
00d579c5 | 2015 | CV *cv = Nullcv; |
533c011a | 2016 | OP *myop = PL_op; |
84902520 | 2017 | U32 flags = 0; |
3280af22 NIS |
2018 | I32 o_save_i = PL_savestack_ix, type; |
2019 | XPV *tXpv = PL_Xpv; | |
84902520 | 2020 | |
3280af22 | 2021 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2022 | flags |= 1; |
3280af22 | 2023 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2024 | flags |= 4; |
3280af22 | 2025 | if (PL_retstack_ix < PL_retstack_max - 2) |
84902520 | 2026 | flags |= 8; |
3280af22 | 2027 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2028 | flags |= 16; |
2029 | ||
22c35a8c | 2030 | if (!PL_psig_ptr[sig]) |
cea2e8a9 | 2031 | Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n", |
22c35a8c | 2032 | PL_sig_name[sig]); |
ff0cee69 | 2033 | |
84902520 TB |
2034 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2035 | infinity, so we fix 4 (in fact 5): */ | |
2036 | if (flags & 1) { | |
3280af22 NIS |
2037 | PL_savestack_ix += 5; /* Protect save in progress. */ |
2038 | o_save_i = PL_savestack_ix; | |
c76ac1ee | 2039 | SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags); |
84902520 TB |
2040 | } |
2041 | if (flags & 4) | |
3280af22 | 2042 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2043 | if (flags & 8) { |
3280af22 NIS |
2044 | PL_retstack_ix++; |
2045 | PL_retstack[PL_retstack_ix] = NULL; | |
84902520 TB |
2046 | } |
2047 | if (flags & 16) | |
3280af22 | 2048 | PL_scopestack_ix += 1; |
84902520 | 2049 | /* sv_2cv is too complicated, try a simpler variant first: */ |
22c35a8c | 2050 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 | 2051 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c | 2052 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 | 2053 | |
a0d0e21e | 2054 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2055 | if (ckWARN(WARN_SIGNAL)) |
cea2e8a9 | 2056 | Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2057 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2058 | : ((cv && CvGV(cv)) |
2059 | ? GvENAME(CvGV(cv)) | |
2060 | : "__ANON__"))); | |
2061 | goto cleanup; | |
79072805 LW |
2062 | } |
2063 | ||
22c35a8c GS |
2064 | if(PL_psig_name[sig]) { |
2065 | sv = SvREFCNT_inc(PL_psig_name[sig]); | |
84902520 TB |
2066 | flags |= 64; |
2067 | sig_sv = sv; | |
2068 | } else { | |
ff0cee69 | 2069 | sv = sv_newmortal(); |
22c35a8c | 2070 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2071 | } |
e336de0d | 2072 | |
e788e7d3 | 2073 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2074 | PUSHMARK(SP); |
79072805 | 2075 | PUSHs(sv); |
79072805 | 2076 | PUTBACK; |
a0d0e21e | 2077 | |
864dbfa3 | 2078 | call_sv((SV*)cv, G_DISCARD); |
79072805 | 2079 | |
d3acc0f7 | 2080 | POPSTACK; |
00d579c5 | 2081 | cleanup: |
84902520 | 2082 | if (flags & 1) |
3280af22 | 2083 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
84902520 | 2084 | if (flags & 4) |
3280af22 | 2085 | PL_markstack_ptr--; |
84902520 | 2086 | if (flags & 8) |
3280af22 | 2087 | PL_retstack_ix--; |
84902520 | 2088 | if (flags & 16) |
3280af22 | 2089 | PL_scopestack_ix -= 1; |
84902520 TB |
2090 | if (flags & 64) |
2091 | SvREFCNT_dec(sv); | |
533c011a | 2092 | PL_op = myop; /* Apparently not needed... */ |
84902520 | 2093 | |
3280af22 NIS |
2094 | PL_Sv = tSv; /* Restore global temporaries. */ |
2095 | PL_Xpv = tXpv; | |
79072805 LW |
2096 | return; |
2097 | } | |
4e35701f NIS |
2098 | |
2099 | ||
51371543 | 2100 | #ifdef PERL_OBJECT |
51371543 GS |
2101 | #include "XSUB.h" |
2102 | #endif | |
2103 | ||
2104 | static void | |
2105 | restore_magic(pTHXo_ void *p) | |
2106 | { | |
2107 | dTHR; | |
2108 | MGS* mgs = SSPTR((I32)p, MGS*); | |
2109 | SV* sv = mgs->mgs_sv; | |
2110 | ||
2111 | if (!sv) | |
2112 | return; | |
2113 | ||
2114 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2115 | { | |
2116 | if (mgs->mgs_flags) | |
2117 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2118 | else | |
2119 | mg_magical(sv); | |
2120 | if (SvGMAGICAL(sv)) | |
2121 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
2122 | } | |
2123 | ||
2124 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2125 | ||
2126 | /* If we're still on top of the stack, pop us off. (That condition | |
2127 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2128 | * if it's being called via leave_scope.) | |
2129 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2130 | * may leave alloc gunk on the savestack, and some code | |
2131 | * (e.g. sighandler) doesn't expect that... | |
2132 | */ | |
2133 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2134 | { | |
2135 | I32 popval = SSPOPINT; | |
c76ac1ee | 2136 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2137 | PL_savestack_ix -= 2; |
2138 | popval = SSPOPINT; | |
2139 | assert(popval == SAVEt_ALLOC); | |
2140 | popval = SSPOPINT; | |
2141 | PL_savestack_ix -= popval; | |
2142 | } | |
2143 | ||
2144 | } | |
2145 | ||
2146 | static void | |
2147 | unwind_handler_stack(pTHXo_ void *p) | |
2148 | { | |
2149 | dTHR; | |
2150 | U32 flags = *(U32*)p; | |
2151 | ||
2152 | if (flags & 1) | |
2153 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
2154 | /* cxstack_ix-- Not needed, die already unwound it. */ | |
2155 | if (flags & 64) | |
2156 | SvREFCNT_dec(sig_sv); | |
2157 | } |