Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* util.c |
a687059c | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
770526c1 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
a687059c | 5 | * |
d48672a2 LW |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. | |
8d063cd8 | 8 | * |
8d063cd8 | 9 | */ |
a0d0e21e LW |
10 | |
11 | /* | |
12 | * "Very useful, no doubt, that was to Saruman; yet it seems that he was | |
13 | * not content." --Gandalf | |
14 | */ | |
8d063cd8 | 15 | |
166f8a29 DM |
16 | /* This file contains assorted utility routines. |
17 | * Which is a polite way of saying any stuff that people couldn't think of | |
18 | * a better place for. Amongst other things, it includes the warning and | |
19 | * dieing stuff, plus wrappers for malloc code. | |
20 | */ | |
21 | ||
8d063cd8 | 22 | #include "EXTERN.h" |
864dbfa3 | 23 | #define PERL_IN_UTIL_C |
8d063cd8 | 24 | #include "perl.h" |
62b28dd9 | 25 | |
64ca3a65 | 26 | #ifndef PERL_MICRO |
a687059c | 27 | #include <signal.h> |
36477c24 | 28 | #ifndef SIG_ERR |
29 | # define SIG_ERR ((Sighandler_t) -1) | |
30 | #endif | |
64ca3a65 | 31 | #endif |
36477c24 | 32 | |
ff68c719 | 33 | #ifdef I_SYS_WAIT |
34 | # include <sys/wait.h> | |
35 | #endif | |
36 | ||
868439a2 JH |
37 | #ifdef HAS_SELECT |
38 | # ifdef I_SYS_SELECT | |
39 | # include <sys/select.h> | |
40 | # endif | |
41 | #endif | |
42 | ||
8d063cd8 | 43 | #define FLUSH |
8d063cd8 | 44 | |
16cebae2 GS |
45 | #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC) |
46 | # define FD_CLOEXEC 1 /* NeXT needs this */ | |
47 | #endif | |
48 | ||
a687059c LW |
49 | /* NOTE: Do not call the next three routines directly. Use the macros |
50 | * in handy.h, so that we can easily redefine everything to do tracking of | |
51 | * allocated hunks back to the original New to track down any memory leaks. | |
20cec16a | 52 | * XXX This advice seems to be widely ignored :-( --AD August 1996. |
a687059c LW |
53 | */ |
54 | ||
26fa51c3 AMS |
55 | /* paranoid version of system's malloc() */ |
56 | ||
bd4080b3 | 57 | Malloc_t |
4f63d024 | 58 | Perl_safesysmalloc(MEM_SIZE size) |
8d063cd8 | 59 | { |
54aff467 | 60 | dTHX; |
bd4080b3 | 61 | Malloc_t ptr; |
55497cff | 62 | #ifdef HAS_64K_LIMIT |
62b28dd9 | 63 | if (size > 0xffff) { |
bf49b057 | 64 | PerlIO_printf(Perl_error_log, |
16cebae2 | 65 | "Allocation too large: %lx\n", size) FLUSH; |
54aff467 | 66 | my_exit(1); |
62b28dd9 | 67 | } |
55497cff | 68 | #endif /* HAS_64K_LIMIT */ |
34de22dd LW |
69 | #ifdef DEBUGGING |
70 | if ((long)size < 0) | |
4f63d024 | 71 | Perl_croak_nocontext("panic: malloc"); |
34de22dd | 72 | #endif |
12ae5dfc | 73 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
da927450 | 74 | PERL_ALLOC_CHECK(ptr); |
97835f67 | 75 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); |
8d063cd8 LW |
76 | if (ptr != Nullch) |
77 | return ptr; | |
3280af22 | 78 | else if (PL_nomemok) |
7c0587c8 | 79 | return Nullch; |
8d063cd8 | 80 | else { |
e0767201 GA |
81 | /* Can't use PerlIO to write as it allocates memory */ |
82 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
83 | PL_no_mem, strlen(PL_no_mem)); | |
54aff467 | 84 | my_exit(1); |
3aed30dc | 85 | return Nullch; |
8d063cd8 LW |
86 | } |
87 | /*NOTREACHED*/ | |
88 | } | |
89 | ||
f2517201 | 90 | /* paranoid version of system's realloc() */ |
8d063cd8 | 91 | |
bd4080b3 | 92 | Malloc_t |
4f63d024 | 93 | Perl_safesysrealloc(Malloc_t where,MEM_SIZE size) |
8d063cd8 | 94 | { |
54aff467 | 95 | dTHX; |
bd4080b3 | 96 | Malloc_t ptr; |
9a34ef1d | 97 | #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO) |
6ad3d225 | 98 | Malloc_t PerlMem_realloc(); |
ecfc5424 | 99 | #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */ |
8d063cd8 | 100 | |
a1d180c4 | 101 | #ifdef HAS_64K_LIMIT |
5f05dabc | 102 | if (size > 0xffff) { |
bf49b057 | 103 | PerlIO_printf(Perl_error_log, |
5f05dabc | 104 | "Reallocation too large: %lx\n", size) FLUSH; |
54aff467 | 105 | my_exit(1); |
5f05dabc | 106 | } |
55497cff | 107 | #endif /* HAS_64K_LIMIT */ |
7614df0c | 108 | if (!size) { |
f2517201 | 109 | safesysfree(where); |
7614df0c JD |
110 | return NULL; |
111 | } | |
112 | ||
378cc40b | 113 | if (!where) |
f2517201 | 114 | return safesysmalloc(size); |
34de22dd LW |
115 | #ifdef DEBUGGING |
116 | if ((long)size < 0) | |
4f63d024 | 117 | Perl_croak_nocontext("panic: realloc"); |
34de22dd | 118 | #endif |
12ae5dfc | 119 | ptr = (Malloc_t)PerlMem_realloc(where,size); |
da927450 | 120 | PERL_ALLOC_CHECK(ptr); |
a1d180c4 | 121 | |
97835f67 JH |
122 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++)); |
123 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); | |
79072805 | 124 | |
8d063cd8 LW |
125 | if (ptr != Nullch) |
126 | return ptr; | |
3280af22 | 127 | else if (PL_nomemok) |
7c0587c8 | 128 | return Nullch; |
8d063cd8 | 129 | else { |
e0767201 GA |
130 | /* Can't use PerlIO to write as it allocates memory */ |
131 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
132 | PL_no_mem, strlen(PL_no_mem)); | |
54aff467 | 133 | my_exit(1); |
4e35701f | 134 | return Nullch; |
8d063cd8 LW |
135 | } |
136 | /*NOTREACHED*/ | |
137 | } | |
138 | ||
f2517201 | 139 | /* safe version of system's free() */ |
8d063cd8 | 140 | |
54310121 | 141 | Free_t |
4f63d024 | 142 | Perl_safesysfree(Malloc_t where) |
8d063cd8 | 143 | { |
27da23d5 | 144 | dVAR; |
155aba94 | 145 | #ifdef PERL_IMPLICIT_SYS |
54aff467 | 146 | dTHX; |
155aba94 | 147 | #endif |
97835f67 | 148 | DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++)); |
378cc40b | 149 | if (where) { |
de3bb511 | 150 | /*SUPPRESS 701*/ |
6ad3d225 | 151 | PerlMem_free(where); |
378cc40b | 152 | } |
8d063cd8 LW |
153 | } |
154 | ||
f2517201 | 155 | /* safe version of system's calloc() */ |
1050c9ca | 156 | |
bd4080b3 | 157 | Malloc_t |
4f63d024 | 158 | Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size) |
1050c9ca | 159 | { |
54aff467 | 160 | dTHX; |
bd4080b3 | 161 | Malloc_t ptr; |
1050c9ca | 162 | |
55497cff | 163 | #ifdef HAS_64K_LIMIT |
5f05dabc | 164 | if (size * count > 0xffff) { |
bf49b057 | 165 | PerlIO_printf(Perl_error_log, |
5f05dabc | 166 | "Allocation too large: %lx\n", size * count) FLUSH; |
54aff467 | 167 | my_exit(1); |
5f05dabc | 168 | } |
55497cff | 169 | #endif /* HAS_64K_LIMIT */ |
1050c9ca | 170 | #ifdef DEBUGGING |
171 | if ((long)size < 0 || (long)count < 0) | |
4f63d024 | 172 | Perl_croak_nocontext("panic: calloc"); |
1050c9ca | 173 | #endif |
0b7c1c42 | 174 | size *= count; |
12ae5dfc | 175 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
da927450 | 176 | PERL_ALLOC_CHECK(ptr); |
97835f67 | 177 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size)); |
1050c9ca | 178 | if (ptr != Nullch) { |
179 | memset((void*)ptr, 0, size); | |
180 | return ptr; | |
181 | } | |
3280af22 | 182 | else if (PL_nomemok) |
1050c9ca | 183 | return Nullch; |
184 | else { | |
e0767201 GA |
185 | /* Can't use PerlIO to write as it allocates memory */ |
186 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
187 | PL_no_mem, strlen(PL_no_mem)); | |
54aff467 | 188 | my_exit(1); |
4e35701f | 189 | return Nullch; |
1050c9ca | 190 | } |
191 | /*NOTREACHED*/ | |
192 | } | |
193 | ||
cae6d0e5 GS |
194 | /* These must be defined when not using Perl's malloc for binary |
195 | * compatibility */ | |
196 | ||
197 | #ifndef MYMALLOC | |
198 | ||
199 | Malloc_t Perl_malloc (MEM_SIZE nbytes) | |
200 | { | |
201 | dTHXs; | |
077a72a9 | 202 | return (Malloc_t)PerlMem_malloc(nbytes); |
cae6d0e5 GS |
203 | } |
204 | ||
205 | Malloc_t Perl_calloc (MEM_SIZE elements, MEM_SIZE size) | |
206 | { | |
207 | dTHXs; | |
077a72a9 | 208 | return (Malloc_t)PerlMem_calloc(elements, size); |
cae6d0e5 GS |
209 | } |
210 | ||
211 | Malloc_t Perl_realloc (Malloc_t where, MEM_SIZE nbytes) | |
212 | { | |
213 | dTHXs; | |
077a72a9 | 214 | return (Malloc_t)PerlMem_realloc(where, nbytes); |
cae6d0e5 GS |
215 | } |
216 | ||
217 | Free_t Perl_mfree (Malloc_t where) | |
218 | { | |
219 | dTHXs; | |
220 | PerlMem_free(where); | |
221 | } | |
222 | ||
223 | #endif | |
224 | ||
8d063cd8 LW |
225 | /* copy a string up to some (non-backslashed) delimiter, if any */ |
226 | ||
227 | char * | |
e1ec3a88 | 228 | Perl_delimcpy(pTHX_ register char *to, register const char *toend, register const char *from, register const char *fromend, register int delim, I32 *retlen) |
8d063cd8 | 229 | { |
fc36a67e | 230 | register I32 tolen; |
231 | for (tolen = 0; from < fromend; from++, tolen++) { | |
378cc40b LW |
232 | if (*from == '\\') { |
233 | if (from[1] == delim) | |
234 | from++; | |
fc36a67e | 235 | else { |
236 | if (to < toend) | |
237 | *to++ = *from; | |
238 | tolen++; | |
239 | from++; | |
240 | } | |
378cc40b | 241 | } |
bedebaa5 | 242 | else if (*from == delim) |
8d063cd8 | 243 | break; |
fc36a67e | 244 | if (to < toend) |
245 | *to++ = *from; | |
8d063cd8 | 246 | } |
bedebaa5 CS |
247 | if (to < toend) |
248 | *to = '\0'; | |
fc36a67e | 249 | *retlen = tolen; |
73d840c0 | 250 | return (char *)from; |
8d063cd8 LW |
251 | } |
252 | ||
253 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 254 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
255 | |
256 | char * | |
864dbfa3 | 257 | Perl_instr(pTHX_ register const char *big, register const char *little) |
378cc40b | 258 | { |
08105a92 | 259 | register const char *s, *x; |
79072805 | 260 | register I32 first; |
378cc40b | 261 | |
a687059c | 262 | if (!little) |
08105a92 | 263 | return (char*)big; |
a687059c | 264 | first = *little++; |
378cc40b | 265 | if (!first) |
08105a92 | 266 | return (char*)big; |
378cc40b LW |
267 | while (*big) { |
268 | if (*big++ != first) | |
269 | continue; | |
270 | for (x=big,s=little; *s; /**/ ) { | |
271 | if (!*x) | |
272 | return Nullch; | |
273 | if (*s++ != *x++) { | |
274 | s--; | |
275 | break; | |
276 | } | |
277 | } | |
278 | if (!*s) | |
08105a92 | 279 | return (char*)(big-1); |
378cc40b LW |
280 | } |
281 | return Nullch; | |
282 | } | |
8d063cd8 | 283 | |
a687059c LW |
284 | /* same as instr but allow embedded nulls */ |
285 | ||
286 | char * | |
864dbfa3 | 287 | Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend) |
8d063cd8 | 288 | { |
08105a92 | 289 | register const char *s, *x; |
e1ec3a88 | 290 | register const I32 first = *little; |
08105a92 | 291 | register const char *littleend = lend; |
378cc40b | 292 | |
a0d0e21e | 293 | if (!first && little >= littleend) |
08105a92 | 294 | return (char*)big; |
de3bb511 LW |
295 | if (bigend - big < littleend - little) |
296 | return Nullch; | |
a687059c LW |
297 | bigend -= littleend - little++; |
298 | while (big <= bigend) { | |
299 | if (*big++ != first) | |
300 | continue; | |
301 | for (x=big,s=little; s < littleend; /**/ ) { | |
302 | if (*s++ != *x++) { | |
303 | s--; | |
304 | break; | |
305 | } | |
306 | } | |
307 | if (s >= littleend) | |
08105a92 | 308 | return (char*)(big-1); |
378cc40b | 309 | } |
a687059c LW |
310 | return Nullch; |
311 | } | |
312 | ||
313 | /* reverse of the above--find last substring */ | |
314 | ||
315 | char * | |
864dbfa3 | 316 | Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend) |
a687059c | 317 | { |
08105a92 GS |
318 | register const char *bigbeg; |
319 | register const char *s, *x; | |
e1ec3a88 | 320 | register const I32 first = *little; |
08105a92 | 321 | register const char *littleend = lend; |
a687059c | 322 | |
a0d0e21e | 323 | if (!first && little >= littleend) |
08105a92 | 324 | return (char*)bigend; |
a687059c LW |
325 | bigbeg = big; |
326 | big = bigend - (littleend - little++); | |
327 | while (big >= bigbeg) { | |
328 | if (*big-- != first) | |
329 | continue; | |
330 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
331 | if (*s++ != *x++) { | |
332 | s--; | |
333 | break; | |
334 | } | |
335 | } | |
336 | if (s >= littleend) | |
08105a92 | 337 | return (char*)(big+1); |
378cc40b | 338 | } |
a687059c | 339 | return Nullch; |
378cc40b | 340 | } |
a687059c | 341 | |
cf93c79d IZ |
342 | #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/ |
343 | ||
344 | /* As a space optimization, we do not compile tables for strings of length | |
345 | 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are | |
346 | special-cased in fbm_instr(). | |
347 | ||
348 | If FBMcf_TAIL, the table is created as if the string has a trailing \n. */ | |
349 | ||
954c1994 | 350 | /* |
ccfc67b7 JH |
351 | =head1 Miscellaneous Functions |
352 | ||
954c1994 GS |
353 | =for apidoc fbm_compile |
354 | ||
355 | Analyses the string in order to make fast searches on it using fbm_instr() | |
356 | -- the Boyer-Moore algorithm. | |
357 | ||
358 | =cut | |
359 | */ | |
360 | ||
378cc40b | 361 | void |
7506f9c3 | 362 | Perl_fbm_compile(pTHX_ SV *sv, U32 flags) |
378cc40b | 363 | { |
942e002e GS |
364 | register U8 *s; |
365 | register U8 *table; | |
79072805 | 366 | register U32 i; |
0b71040e | 367 | STRLEN len; |
79072805 LW |
368 | I32 rarest = 0; |
369 | U32 frequency = 256; | |
370 | ||
c517dc2b JH |
371 | if (flags & FBMcf_TAIL) { |
372 | MAGIC *mg = SvUTF8(sv) && SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : NULL; | |
cf93c79d | 373 | sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */ |
c517dc2b JH |
374 | if (mg && mg->mg_len >= 0) |
375 | mg->mg_len++; | |
376 | } | |
942e002e | 377 | s = (U8*)SvPV_force(sv, len); |
07f14f54 | 378 | (void)SvUPGRADE(sv, SVt_PVBM); |
d1be9408 | 379 | if (len == 0) /* TAIL might be on a zero-length string. */ |
cf93c79d | 380 | return; |
02128f11 | 381 | if (len > 2) { |
7506f9c3 | 382 | U8 mlen; |
cf93c79d IZ |
383 | unsigned char *sb; |
384 | ||
7506f9c3 | 385 | if (len > 255) |
cf93c79d | 386 | mlen = 255; |
7506f9c3 GS |
387 | else |
388 | mlen = (U8)len; | |
389 | Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET); | |
cf93c79d | 390 | table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET); |
7506f9c3 GS |
391 | s = table - 1 - FBM_TABLE_OFFSET; /* last char */ |
392 | memset((void*)table, mlen, 256); | |
393 | table[-1] = (U8)flags; | |
02128f11 | 394 | i = 0; |
7506f9c3 | 395 | sb = s - mlen + 1; /* first char (maybe) */ |
cf93c79d IZ |
396 | while (s >= sb) { |
397 | if (table[*s] == mlen) | |
7506f9c3 | 398 | table[*s] = (U8)i; |
cf93c79d IZ |
399 | s--, i++; |
400 | } | |
378cc40b | 401 | } |
14befaf4 | 402 | sv_magic(sv, Nullsv, PERL_MAGIC_bm, Nullch, 0); /* deep magic */ |
79072805 | 403 | SvVALID_on(sv); |
378cc40b | 404 | |
463ee0b2 | 405 | s = (unsigned char*)(SvPVX(sv)); /* deeper magic */ |
bbce6d69 | 406 | for (i = 0; i < len; i++) { |
22c35a8c | 407 | if (PL_freq[s[i]] < frequency) { |
bbce6d69 | 408 | rarest = i; |
22c35a8c | 409 | frequency = PL_freq[s[i]]; |
378cc40b LW |
410 | } |
411 | } | |
79072805 | 412 | BmRARE(sv) = s[rarest]; |
eb160463 | 413 | BmPREVIOUS(sv) = (U16)rarest; |
cf93c79d IZ |
414 | BmUSEFUL(sv) = 100; /* Initial value */ |
415 | if (flags & FBMcf_TAIL) | |
416 | SvTAIL_on(sv); | |
7506f9c3 GS |
417 | DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n", |
418 | BmRARE(sv),BmPREVIOUS(sv))); | |
378cc40b LW |
419 | } |
420 | ||
cf93c79d IZ |
421 | /* If SvTAIL(littlestr), it has a fake '\n' at end. */ |
422 | /* If SvTAIL is actually due to \Z or \z, this gives false positives | |
423 | if multiline */ | |
424 | ||
954c1994 GS |
425 | /* |
426 | =for apidoc fbm_instr | |
427 | ||
428 | Returns the location of the SV in the string delimited by C<str> and | |
429 | C<strend>. It returns C<Nullch> if the string can't be found. The C<sv> | |
430 | does not have to be fbm_compiled, but the search will not be as fast | |
431 | then. | |
432 | ||
433 | =cut | |
434 | */ | |
435 | ||
378cc40b | 436 | char * |
864dbfa3 | 437 | Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags) |
378cc40b | 438 | { |
a687059c | 439 | register unsigned char *s; |
cf93c79d IZ |
440 | STRLEN l; |
441 | register unsigned char *little = (unsigned char *)SvPV(littlestr,l); | |
442 | register STRLEN littlelen = l; | |
e1ec3a88 | 443 | register const I32 multiline = flags & FBMrf_MULTILINE; |
cf93c79d | 444 | |
eb160463 | 445 | if ((STRLEN)(bigend - big) < littlelen) { |
a1d180c4 | 446 | if ( SvTAIL(littlestr) |
eb160463 | 447 | && ((STRLEN)(bigend - big) == littlelen - 1) |
a1d180c4 | 448 | && (littlelen == 1 |
12ae5dfc | 449 | || (*big == *little && |
27da23d5 | 450 | memEQ((char *)big, (char *)little, littlelen - 1)))) |
cf93c79d IZ |
451 | return (char*)big; |
452 | return Nullch; | |
453 | } | |
378cc40b | 454 | |
cf93c79d | 455 | if (littlelen <= 2) { /* Special-cased */ |
cf93c79d IZ |
456 | |
457 | if (littlelen == 1) { | |
458 | if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */ | |
459 | /* Know that bigend != big. */ | |
460 | if (bigend[-1] == '\n') | |
461 | return (char *)(bigend - 1); | |
462 | return (char *) bigend; | |
463 | } | |
464 | s = big; | |
465 | while (s < bigend) { | |
466 | if (*s == *little) | |
467 | return (char *)s; | |
468 | s++; | |
469 | } | |
470 | if (SvTAIL(littlestr)) | |
471 | return (char *) bigend; | |
472 | return Nullch; | |
473 | } | |
474 | if (!littlelen) | |
475 | return (char*)big; /* Cannot be SvTAIL! */ | |
476 | ||
477 | /* littlelen is 2 */ | |
478 | if (SvTAIL(littlestr) && !multiline) { | |
479 | if (bigend[-1] == '\n' && bigend[-2] == *little) | |
480 | return (char*)bigend - 2; | |
481 | if (bigend[-1] == *little) | |
482 | return (char*)bigend - 1; | |
483 | return Nullch; | |
484 | } | |
485 | { | |
486 | /* This should be better than FBM if c1 == c2, and almost | |
487 | as good otherwise: maybe better since we do less indirection. | |
488 | And we save a lot of memory by caching no table. */ | |
489 | register unsigned char c1 = little[0]; | |
490 | register unsigned char c2 = little[1]; | |
491 | ||
492 | s = big + 1; | |
493 | bigend--; | |
494 | if (c1 != c2) { | |
495 | while (s <= bigend) { | |
496 | if (s[0] == c2) { | |
497 | if (s[-1] == c1) | |
498 | return (char*)s - 1; | |
499 | s += 2; | |
500 | continue; | |
3fe6f2dc | 501 | } |
cf93c79d IZ |
502 | next_chars: |
503 | if (s[0] == c1) { | |
504 | if (s == bigend) | |
505 | goto check_1char_anchor; | |
506 | if (s[1] == c2) | |
507 | return (char*)s; | |
508 | else { | |
509 | s++; | |
510 | goto next_chars; | |
511 | } | |
512 | } | |
513 | else | |
514 | s += 2; | |
515 | } | |
516 | goto check_1char_anchor; | |
517 | } | |
518 | /* Now c1 == c2 */ | |
519 | while (s <= bigend) { | |
520 | if (s[0] == c1) { | |
521 | if (s[-1] == c1) | |
522 | return (char*)s - 1; | |
523 | if (s == bigend) | |
524 | goto check_1char_anchor; | |
525 | if (s[1] == c1) | |
526 | return (char*)s; | |
527 | s += 3; | |
02128f11 | 528 | } |
c277df42 | 529 | else |
cf93c79d | 530 | s += 2; |
c277df42 | 531 | } |
c277df42 | 532 | } |
cf93c79d IZ |
533 | check_1char_anchor: /* One char and anchor! */ |
534 | if (SvTAIL(littlestr) && (*bigend == *little)) | |
535 | return (char *)bigend; /* bigend is already decremented. */ | |
536 | return Nullch; | |
d48672a2 | 537 | } |
cf93c79d | 538 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ |
bbce6d69 | 539 | s = bigend - littlelen; |
a1d180c4 | 540 | if (s >= big && bigend[-1] == '\n' && *s == *little |
cf93c79d IZ |
541 | /* Automatically of length > 2 */ |
542 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
7506f9c3 | 543 | { |
bbce6d69 | 544 | return (char*)s; /* how sweet it is */ |
7506f9c3 GS |
545 | } |
546 | if (s[1] == *little | |
547 | && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2)) | |
548 | { | |
cf93c79d | 549 | return (char*)s + 1; /* how sweet it is */ |
7506f9c3 | 550 | } |
02128f11 IZ |
551 | return Nullch; |
552 | } | |
cf93c79d IZ |
553 | if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) { |
554 | char *b = ninstr((char*)big,(char*)bigend, | |
555 | (char*)little, (char*)little + littlelen); | |
556 | ||
557 | if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */ | |
558 | /* Chop \n from littlestr: */ | |
559 | s = bigend - littlelen + 1; | |
7506f9c3 GS |
560 | if (*s == *little |
561 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
562 | { | |
3fe6f2dc | 563 | return (char*)s; |
7506f9c3 | 564 | } |
cf93c79d | 565 | return Nullch; |
a687059c | 566 | } |
cf93c79d | 567 | return b; |
a687059c | 568 | } |
a1d180c4 | 569 | |
cf93c79d | 570 | { /* Do actual FBM. */ |
e1ec3a88 | 571 | register const unsigned char *table = little + littlelen + FBM_TABLE_OFFSET; |
cf93c79d IZ |
572 | register unsigned char *oldlittle; |
573 | ||
eb160463 | 574 | if (littlelen > (STRLEN)(bigend - big)) |
cf93c79d IZ |
575 | return Nullch; |
576 | --littlelen; /* Last char found by table lookup */ | |
577 | ||
578 | s = big + littlelen; | |
579 | little += littlelen; /* last char */ | |
580 | oldlittle = little; | |
581 | if (s < bigend) { | |
582 | register I32 tmp; | |
583 | ||
584 | top2: | |
585 | /*SUPPRESS 560*/ | |
7506f9c3 | 586 | if ((tmp = table[*s])) { |
cf93c79d | 587 | if ((s += tmp) < bigend) |
62b28dd9 | 588 | goto top2; |
cf93c79d IZ |
589 | goto check_end; |
590 | } | |
591 | else { /* less expensive than calling strncmp() */ | |
592 | register unsigned char *olds = s; | |
593 | ||
594 | tmp = littlelen; | |
595 | ||
596 | while (tmp--) { | |
597 | if (*--s == *--little) | |
598 | continue; | |
cf93c79d IZ |
599 | s = olds + 1; /* here we pay the price for failure */ |
600 | little = oldlittle; | |
601 | if (s < bigend) /* fake up continue to outer loop */ | |
602 | goto top2; | |
603 | goto check_end; | |
604 | } | |
605 | return (char *)s; | |
a687059c | 606 | } |
378cc40b | 607 | } |
cf93c79d IZ |
608 | check_end: |
609 | if ( s == bigend && (table[-1] & FBMcf_TAIL) | |
12ae5dfc JH |
610 | && memEQ((char *)(bigend - littlelen), |
611 | (char *)(oldlittle - littlelen), littlelen) ) | |
cf93c79d IZ |
612 | return (char*)bigend - littlelen; |
613 | return Nullch; | |
378cc40b | 614 | } |
378cc40b LW |
615 | } |
616 | ||
c277df42 IZ |
617 | /* start_shift, end_shift are positive quantities which give offsets |
618 | of ends of some substring of bigstr. | |
fb8eeed8 | 619 | If `last' we want the last occurrence. |
c277df42 | 620 | old_posp is the way of communication between consequent calls if |
a1d180c4 | 621 | the next call needs to find the . |
c277df42 | 622 | The initial *old_posp should be -1. |
cf93c79d IZ |
623 | |
624 | Note that we take into account SvTAIL, so one can get extra | |
625 | optimizations if _ALL flag is set. | |
c277df42 IZ |
626 | */ |
627 | ||
cf93c79d | 628 | /* If SvTAIL is actually due to \Z or \z, this gives false positives |
26fa51c3 | 629 | if PL_multiline. In fact if !PL_multiline the authoritative answer |
cf93c79d IZ |
630 | is not supported yet. */ |
631 | ||
378cc40b | 632 | char * |
864dbfa3 | 633 | Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last) |
378cc40b | 634 | { |
a687059c LW |
635 | register unsigned char *s, *x; |
636 | register unsigned char *big; | |
79072805 LW |
637 | register I32 pos; |
638 | register I32 previous; | |
639 | register I32 first; | |
a687059c | 640 | register unsigned char *little; |
c277df42 | 641 | register I32 stop_pos; |
a687059c | 642 | register unsigned char *littleend; |
c277df42 | 643 | I32 found = 0; |
378cc40b | 644 | |
c277df42 | 645 | if (*old_posp == -1 |
3280af22 | 646 | ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0 |
cf93c79d IZ |
647 | : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) { |
648 | cant_find: | |
a1d180c4 | 649 | if ( BmRARE(littlestr) == '\n' |
cf93c79d IZ |
650 | && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) { |
651 | little = (unsigned char *)(SvPVX(littlestr)); | |
652 | littleend = little + SvCUR(littlestr); | |
653 | first = *little++; | |
654 | goto check_tail; | |
655 | } | |
378cc40b | 656 | return Nullch; |
cf93c79d IZ |
657 | } |
658 | ||
463ee0b2 | 659 | little = (unsigned char *)(SvPVX(littlestr)); |
79072805 | 660 | littleend = little + SvCUR(littlestr); |
378cc40b | 661 | first = *little++; |
c277df42 | 662 | /* The value of pos we can start at: */ |
79072805 | 663 | previous = BmPREVIOUS(littlestr); |
463ee0b2 | 664 | big = (unsigned char *)(SvPVX(bigstr)); |
c277df42 IZ |
665 | /* The value of pos we can stop at: */ |
666 | stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous); | |
cf93c79d | 667 | if (previous + start_shift > stop_pos) { |
0fe87f7c HS |
668 | /* |
669 | stop_pos does not include SvTAIL in the count, so this check is incorrect | |
670 | (I think) - see [ID 20010618.006] and t/op/study.t. HVDS 2001/06/19 | |
671 | */ | |
672 | #if 0 | |
cf93c79d IZ |
673 | if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */ |
674 | goto check_tail; | |
0fe87f7c | 675 | #endif |
cf93c79d IZ |
676 | return Nullch; |
677 | } | |
c277df42 | 678 | while (pos < previous + start_shift) { |
3280af22 | 679 | if (!(pos += PL_screamnext[pos])) |
cf93c79d | 680 | goto cant_find; |
378cc40b | 681 | } |
de3bb511 | 682 | big -= previous; |
bbce6d69 | 683 | do { |
ef64f398 | 684 | if (pos >= stop_pos) break; |
bbce6d69 | 685 | if (big[pos] != first) |
686 | continue; | |
687 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
bbce6d69 | 688 | if (*s++ != *x++) { |
689 | s--; | |
690 | break; | |
378cc40b | 691 | } |
bbce6d69 | 692 | } |
c277df42 IZ |
693 | if (s == littleend) { |
694 | *old_posp = pos; | |
695 | if (!last) return (char *)(big+pos); | |
696 | found = 1; | |
697 | } | |
3280af22 | 698 | } while ( pos += PL_screamnext[pos] ); |
a1d180c4 | 699 | if (last && found) |
cf93c79d | 700 | return (char *)(big+(*old_posp)); |
cf93c79d IZ |
701 | check_tail: |
702 | if (!SvTAIL(littlestr) || (end_shift > 0)) | |
703 | return Nullch; | |
704 | /* Ignore the trailing "\n". This code is not microoptimized */ | |
705 | big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr)); | |
706 | stop_pos = littleend - little; /* Actual littlestr len */ | |
707 | if (stop_pos == 0) | |
708 | return (char*)big; | |
709 | big -= stop_pos; | |
710 | if (*big == first | |
12ae5dfc JH |
711 | && ((stop_pos == 1) || |
712 | memEQ((char *)(big + 1), (char *)little, stop_pos - 1))) | |
cf93c79d IZ |
713 | return (char*)big; |
714 | return Nullch; | |
8d063cd8 LW |
715 | } |
716 | ||
79072805 | 717 | I32 |
864dbfa3 | 718 | Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len) |
79072805 | 719 | { |
e1ec3a88 AL |
720 | register const U8 *a = (const U8 *)s1; |
721 | register const U8 *b = (const U8 *)s2; | |
79072805 | 722 | while (len--) { |
22c35a8c | 723 | if (*a != *b && *a != PL_fold[*b]) |
bbce6d69 | 724 | return 1; |
725 | a++,b++; | |
726 | } | |
727 | return 0; | |
728 | } | |
729 | ||
730 | I32 | |
864dbfa3 | 731 | Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len) |
bbce6d69 | 732 | { |
27da23d5 | 733 | dVAR; |
e1ec3a88 AL |
734 | register const U8 *a = (const U8 *)s1; |
735 | register const U8 *b = (const U8 *)s2; | |
bbce6d69 | 736 | while (len--) { |
22c35a8c | 737 | if (*a != *b && *a != PL_fold_locale[*b]) |
bbce6d69 | 738 | return 1; |
739 | a++,b++; | |
79072805 LW |
740 | } |
741 | return 0; | |
742 | } | |
743 | ||
8d063cd8 LW |
744 | /* copy a string to a safe spot */ |
745 | ||
954c1994 | 746 | /* |
ccfc67b7 JH |
747 | =head1 Memory Management |
748 | ||
954c1994 GS |
749 | =for apidoc savepv |
750 | ||
61a925ed AMS |
751 | Perl's version of C<strdup()>. Returns a pointer to a newly allocated |
752 | string which is a duplicate of C<pv>. The size of the string is | |
753 | determined by C<strlen()>. The memory allocated for the new string can | |
754 | be freed with the C<Safefree()> function. | |
954c1994 GS |
755 | |
756 | =cut | |
757 | */ | |
758 | ||
8d063cd8 | 759 | char * |
efdfce31 | 760 | Perl_savepv(pTHX_ const char *pv) |
8d063cd8 | 761 | { |
e90e2364 | 762 | register char *newaddr; |
fbbafa6d RGS |
763 | #ifdef PERL_MALLOC_WRAP |
764 | STRLEN pvlen; | |
765 | #endif | |
e90e2364 NC |
766 | if (!pv) |
767 | return Nullch; | |
768 | ||
fbbafa6d RGS |
769 | #ifdef PERL_MALLOC_WRAP |
770 | pvlen = strlen(pv)+1; | |
771 | New(902,newaddr,pvlen,char); | |
772 | #else | |
e90e2364 | 773 | New(902,newaddr,strlen(pv)+1,char); |
fbbafa6d | 774 | #endif |
e90e2364 | 775 | return strcpy(newaddr,pv); |
8d063cd8 LW |
776 | } |
777 | ||
a687059c LW |
778 | /* same thing but with a known length */ |
779 | ||
954c1994 GS |
780 | /* |
781 | =for apidoc savepvn | |
782 | ||
61a925ed AMS |
783 | Perl's version of what C<strndup()> would be if it existed. Returns a |
784 | pointer to a newly allocated string which is a duplicate of the first | |
785 | C<len> bytes from C<pv>. The memory allocated for the new string can be | |
786 | freed with the C<Safefree()> function. | |
954c1994 GS |
787 | |
788 | =cut | |
789 | */ | |
790 | ||
a687059c | 791 | char * |
efdfce31 | 792 | Perl_savepvn(pTHX_ const char *pv, register I32 len) |
a687059c LW |
793 | { |
794 | register char *newaddr; | |
795 | ||
796 | New(903,newaddr,len+1,char); | |
92110913 | 797 | /* Give a meaning to NULL pointer mainly for the use in sv_magic() */ |
efdfce31 | 798 | if (pv) { |
e90e2364 NC |
799 | /* might not be null terminated */ |
800 | newaddr[len] = '\0'; | |
07409e01 | 801 | return (char *) CopyD(pv,newaddr,len,char); |
92110913 NIS |
802 | } |
803 | else { | |
07409e01 | 804 | return (char *) ZeroD(newaddr,len+1,char); |
92110913 | 805 | } |
a687059c LW |
806 | } |
807 | ||
05ec9bb3 NIS |
808 | /* |
809 | =for apidoc savesharedpv | |
810 | ||
61a925ed AMS |
811 | A version of C<savepv()> which allocates the duplicate string in memory |
812 | which is shared between threads. | |
05ec9bb3 NIS |
813 | |
814 | =cut | |
815 | */ | |
816 | char * | |
efdfce31 | 817 | Perl_savesharedpv(pTHX_ const char *pv) |
05ec9bb3 | 818 | { |
e90e2364 NC |
819 | register char *newaddr; |
820 | if (!pv) | |
821 | return Nullch; | |
822 | ||
823 | newaddr = (char*)PerlMemShared_malloc(strlen(pv)+1); | |
824 | if (!newaddr) { | |
825 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
826 | PL_no_mem, strlen(PL_no_mem)); | |
827 | my_exit(1); | |
05ec9bb3 | 828 | } |
e90e2364 | 829 | return strcpy(newaddr,pv); |
05ec9bb3 NIS |
830 | } |
831 | ||
2e0de35c NC |
832 | /* |
833 | =for apidoc savesvpv | |
834 | ||
6832267f | 835 | A version of C<savepv()>/C<savepvn()> which gets the string to duplicate from |
2e0de35c NC |
836 | the passed in SV using C<SvPV()> |
837 | ||
838 | =cut | |
839 | */ | |
840 | ||
841 | char * | |
842 | Perl_savesvpv(pTHX_ SV *sv) | |
843 | { | |
844 | STRLEN len; | |
845 | const char *pv = SvPV(sv, len); | |
846 | register char *newaddr; | |
847 | ||
26866f99 NC |
848 | ++len; |
849 | New(903,newaddr,len,char); | |
07409e01 | 850 | return (char *) CopyD(pv,newaddr,len,char); |
2e0de35c | 851 | } |
05ec9bb3 NIS |
852 | |
853 | ||
cea2e8a9 | 854 | /* the SV for Perl_form() and mess() is not kept in an arena */ |
fc36a67e | 855 | |
76e3520e | 856 | STATIC SV * |
cea2e8a9 | 857 | S_mess_alloc(pTHX) |
fc36a67e | 858 | { |
859 | SV *sv; | |
860 | XPVMG *any; | |
861 | ||
e72dc28c GS |
862 | if (!PL_dirty) |
863 | return sv_2mortal(newSVpvn("",0)); | |
864 | ||
0372dbb6 GS |
865 | if (PL_mess_sv) |
866 | return PL_mess_sv; | |
867 | ||
fc36a67e | 868 | /* Create as PVMG now, to avoid any upgrading later */ |
869 | New(905, sv, 1, SV); | |
870 | Newz(905, any, 1, XPVMG); | |
871 | SvFLAGS(sv) = SVt_PVMG; | |
872 | SvANY(sv) = (void*)any; | |
873 | SvREFCNT(sv) = 1 << 30; /* practically infinite */ | |
e72dc28c | 874 | PL_mess_sv = sv; |
fc36a67e | 875 | return sv; |
876 | } | |
877 | ||
c5be433b | 878 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
879 | char * |
880 | Perl_form_nocontext(const char* pat, ...) | |
881 | { | |
882 | dTHX; | |
c5be433b | 883 | char *retval; |
cea2e8a9 GS |
884 | va_list args; |
885 | va_start(args, pat); | |
c5be433b | 886 | retval = vform(pat, &args); |
cea2e8a9 | 887 | va_end(args); |
c5be433b | 888 | return retval; |
cea2e8a9 | 889 | } |
c5be433b | 890 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 | 891 | |
7c9e965c | 892 | /* |
ccfc67b7 | 893 | =head1 Miscellaneous Functions |
7c9e965c JP |
894 | =for apidoc form |
895 | ||
896 | Takes a sprintf-style format pattern and conventional | |
897 | (non-SV) arguments and returns the formatted string. | |
898 | ||
899 | (char *) Perl_form(pTHX_ const char* pat, ...) | |
900 | ||
901 | can be used any place a string (char *) is required: | |
902 | ||
903 | char * s = Perl_form("%d.%d",major,minor); | |
904 | ||
905 | Uses a single private buffer so if you want to format several strings you | |
906 | must explicitly copy the earlier strings away (and free the copies when you | |
907 | are done). | |
908 | ||
909 | =cut | |
910 | */ | |
911 | ||
8990e307 | 912 | char * |
864dbfa3 | 913 | Perl_form(pTHX_ const char* pat, ...) |
8990e307 | 914 | { |
c5be433b | 915 | char *retval; |
46fc3d4c | 916 | va_list args; |
46fc3d4c | 917 | va_start(args, pat); |
c5be433b | 918 | retval = vform(pat, &args); |
46fc3d4c | 919 | va_end(args); |
c5be433b GS |
920 | return retval; |
921 | } | |
922 | ||
923 | char * | |
924 | Perl_vform(pTHX_ const char *pat, va_list *args) | |
925 | { | |
926 | SV *sv = mess_alloc(); | |
927 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
e72dc28c | 928 | return SvPVX(sv); |
46fc3d4c | 929 | } |
a687059c | 930 | |
5a844595 GS |
931 | #if defined(PERL_IMPLICIT_CONTEXT) |
932 | SV * | |
933 | Perl_mess_nocontext(const char *pat, ...) | |
934 | { | |
935 | dTHX; | |
936 | SV *retval; | |
937 | va_list args; | |
938 | va_start(args, pat); | |
939 | retval = vmess(pat, &args); | |
940 | va_end(args); | |
941 | return retval; | |
942 | } | |
943 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
944 | ||
06bf62c7 | 945 | SV * |
5a844595 GS |
946 | Perl_mess(pTHX_ const char *pat, ...) |
947 | { | |
948 | SV *retval; | |
949 | va_list args; | |
950 | va_start(args, pat); | |
951 | retval = vmess(pat, &args); | |
952 | va_end(args); | |
953 | return retval; | |
954 | } | |
955 | ||
ae7d165c PJ |
956 | STATIC COP* |
957 | S_closest_cop(pTHX_ COP *cop, OP *o) | |
958 | { | |
959 | /* Look for PL_op starting from o. cop is the last COP we've seen. */ | |
960 | ||
961 | if (!o || o == PL_op) return cop; | |
962 | ||
963 | if (o->op_flags & OPf_KIDS) { | |
964 | OP *kid; | |
965 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
966 | { | |
967 | COP *new_cop; | |
968 | ||
969 | /* If the OP_NEXTSTATE has been optimised away we can still use it | |
970 | * the get the file and line number. */ | |
971 | ||
972 | if (kid->op_type == OP_NULL && kid->op_targ == OP_NEXTSTATE) | |
973 | cop = (COP *)kid; | |
974 | ||
975 | /* Keep searching, and return when we've found something. */ | |
976 | ||
977 | new_cop = closest_cop(cop, kid); | |
978 | if (new_cop) return new_cop; | |
979 | } | |
980 | } | |
981 | ||
982 | /* Nothing found. */ | |
983 | ||
984 | return 0; | |
985 | } | |
986 | ||
5a844595 GS |
987 | SV * |
988 | Perl_vmess(pTHX_ const char *pat, va_list *args) | |
46fc3d4c | 989 | { |
e72dc28c | 990 | SV *sv = mess_alloc(); |
27da23d5 | 991 | static const char dgd[] = " during global destruction.\n"; |
46fc3d4c | 992 | |
fc36a67e | 993 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); |
46fc3d4c | 994 | if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') { |
ae7d165c PJ |
995 | |
996 | /* | |
997 | * Try and find the file and line for PL_op. This will usually be | |
998 | * PL_curcop, but it might be a cop that has been optimised away. We | |
999 | * can try to find such a cop by searching through the optree starting | |
1000 | * from the sibling of PL_curcop. | |
1001 | */ | |
1002 | ||
e1ec3a88 | 1003 | const COP *cop = closest_cop(PL_curcop, PL_curcop->op_sibling); |
ae7d165c PJ |
1004 | if (!cop) cop = PL_curcop; |
1005 | ||
1006 | if (CopLINE(cop)) | |
ed094faf | 1007 | Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf, |
3aed30dc | 1008 | OutCopFILE(cop), (IV)CopLINE(cop)); |
2035c5e8 | 1009 | if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) { |
e1ec3a88 | 1010 | const bool line_mode = (RsSIMPLE(PL_rs) && |
7c1e0849 | 1011 | SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n'); |
57def98f | 1012 | Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf, |
edc2eac3 JH |
1013 | PL_last_in_gv == PL_argvgv ? |
1014 | "" : GvNAME(PL_last_in_gv), | |
1015 | line_mode ? "line" : "chunk", | |
1016 | (IV)IoLINES(GvIOp(PL_last_in_gv))); | |
a687059c | 1017 | } |
515f54a1 | 1018 | sv_catpv(sv, PL_dirty ? dgd : ".\n"); |
a687059c | 1019 | } |
06bf62c7 | 1020 | return sv; |
a687059c LW |
1021 | } |
1022 | ||
7ff03255 SG |
1023 | void |
1024 | Perl_write_to_stderr(pTHX_ const char* message, int msglen) | |
1025 | { | |
27da23d5 | 1026 | dVAR; |
7ff03255 SG |
1027 | IO *io; |
1028 | MAGIC *mg; | |
1029 | ||
1030 | if (PL_stderrgv && SvREFCNT(PL_stderrgv) | |
1031 | && (io = GvIO(PL_stderrgv)) | |
1032 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
1033 | { | |
1034 | dSP; | |
1035 | ENTER; | |
1036 | SAVETMPS; | |
1037 | ||
1038 | save_re_context(); | |
1039 | SAVESPTR(PL_stderrgv); | |
1040 | PL_stderrgv = Nullgv; | |
1041 | ||
1042 | PUSHSTACKi(PERLSI_MAGIC); | |
1043 | ||
1044 | PUSHMARK(SP); | |
1045 | EXTEND(SP,2); | |
1046 | PUSHs(SvTIED_obj((SV*)io, mg)); | |
1047 | PUSHs(sv_2mortal(newSVpvn(message, msglen))); | |
1048 | PUTBACK; | |
1049 | call_method("PRINT", G_SCALAR); | |
1050 | ||
1051 | POPSTACK; | |
1052 | FREETMPS; | |
1053 | LEAVE; | |
1054 | } | |
1055 | else { | |
1056 | #ifdef USE_SFIO | |
1057 | /* SFIO can really mess with your errno */ | |
1058 | int e = errno; | |
1059 | #endif | |
1060 | PerlIO *serr = Perl_error_log; | |
1061 | ||
1062 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); | |
1063 | (void)PerlIO_flush(serr); | |
1064 | #ifdef USE_SFIO | |
1065 | errno = e; | |
1066 | #endif | |
1067 | } | |
1068 | } | |
1069 | ||
3ab1ac99 NC |
1070 | /* Common code used by vcroak, vdie and vwarner */ |
1071 | ||
1072 | void S_vdie_common(pTHX_ const char *message, STRLEN msglen, I32 utf8); | |
1073 | ||
06b5626a | 1074 | STATIC char * |
3ab1ac99 NC |
1075 | S_vdie_croak_common(pTHX_ const char* pat, va_list* args, STRLEN* msglen, |
1076 | I32* utf8) | |
1077 | { | |
27da23d5 | 1078 | dVAR; |
3ab1ac99 NC |
1079 | char *message; |
1080 | ||
1081 | if (pat) { | |
1082 | SV *msv = vmess(pat, args); | |
1083 | if (PL_errors && SvCUR(PL_errors)) { | |
1084 | sv_catsv(PL_errors, msv); | |
1085 | message = SvPV(PL_errors, *msglen); | |
1086 | SvCUR_set(PL_errors, 0); | |
1087 | } | |
1088 | else | |
1089 | message = SvPV(msv,*msglen); | |
1090 | *utf8 = SvUTF8(msv); | |
1091 | } | |
1092 | else { | |
1093 | message = Nullch; | |
1094 | } | |
1095 | ||
1096 | DEBUG_S(PerlIO_printf(Perl_debug_log, | |
1097 | "%p: die/croak: message = %s\ndiehook = %p\n", | |
1098 | thr, message, PL_diehook)); | |
1099 | if (PL_diehook) { | |
1100 | S_vdie_common(aTHX_ message, *msglen, *utf8); | |
1101 | } | |
1102 | return message; | |
1103 | } | |
1104 | ||
63315e18 NC |
1105 | void |
1106 | S_vdie_common(pTHX_ const char *message, STRLEN msglen, I32 utf8) | |
1107 | { | |
1108 | HV *stash; | |
1109 | GV *gv; | |
1110 | CV *cv; | |
1111 | /* sv_2cv might call Perl_croak() */ | |
1112 | SV *olddiehook = PL_diehook; | |
1113 | ||
1114 | assert(PL_diehook); | |
1115 | ENTER; | |
1116 | SAVESPTR(PL_diehook); | |
1117 | PL_diehook = Nullsv; | |
1118 | cv = sv_2cv(olddiehook, &stash, &gv, 0); | |
1119 | LEAVE; | |
1120 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
1121 | dSP; | |
1122 | SV *msg; | |
1123 | ||
1124 | ENTER; | |
1125 | save_re_context(); | |
1126 | if (message) { | |
1127 | msg = newSVpvn(message, msglen); | |
1128 | SvFLAGS(msg) |= utf8; | |
1129 | SvREADONLY_on(msg); | |
1130 | SAVEFREESV(msg); | |
1131 | } | |
1132 | else { | |
1133 | msg = ERRSV; | |
1134 | } | |
1135 | ||
1136 | PUSHSTACKi(PERLSI_DIEHOOK); | |
1137 | PUSHMARK(SP); | |
1138 | XPUSHs(msg); | |
1139 | PUTBACK; | |
1140 | call_sv((SV*)cv, G_DISCARD); | |
1141 | POPSTACK; | |
1142 | LEAVE; | |
1143 | } | |
1144 | } | |
1145 | ||
c5be433b GS |
1146 | OP * |
1147 | Perl_vdie(pTHX_ const char* pat, va_list *args) | |
36477c24 | 1148 | { |
73d840c0 | 1149 | const char *message; |
e1ec3a88 | 1150 | const int was_in_eval = PL_in_eval; |
06bf62c7 | 1151 | STRLEN msglen; |
ff882698 | 1152 | I32 utf8 = 0; |
36477c24 | 1153 | |
bf49b057 | 1154 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
199100c8 | 1155 | "%p: die: curstack = %p, mainstack = %p\n", |
533c011a | 1156 | thr, PL_curstack, PL_mainstack)); |
36477c24 | 1157 | |
3ab1ac99 | 1158 | message = S_vdie_croak_common(aTHX_ pat, args, &msglen, &utf8); |
36477c24 | 1159 | |
06bf62c7 | 1160 | PL_restartop = die_where(message, msglen); |
ff882698 | 1161 | SvFLAGS(ERRSV) |= utf8; |
bf49b057 | 1162 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
7c06b590 | 1163 | "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n", |
533c011a | 1164 | thr, PL_restartop, was_in_eval, PL_top_env)); |
3280af22 | 1165 | if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev) |
6224f72b | 1166 | JMPENV_JUMP(3); |
3280af22 | 1167 | return PL_restartop; |
36477c24 | 1168 | } |
1169 | ||
c5be433b | 1170 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1171 | OP * |
1172 | Perl_die_nocontext(const char* pat, ...) | |
a687059c | 1173 | { |
cea2e8a9 GS |
1174 | dTHX; |
1175 | OP *o; | |
a687059c | 1176 | va_list args; |
cea2e8a9 | 1177 | va_start(args, pat); |
c5be433b | 1178 | o = vdie(pat, &args); |
cea2e8a9 GS |
1179 | va_end(args); |
1180 | return o; | |
1181 | } | |
c5be433b | 1182 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 GS |
1183 | |
1184 | OP * | |
1185 | Perl_die(pTHX_ const char* pat, ...) | |
1186 | { | |
1187 | OP *o; | |
1188 | va_list args; | |
1189 | va_start(args, pat); | |
c5be433b | 1190 | o = vdie(pat, &args); |
cea2e8a9 GS |
1191 | va_end(args); |
1192 | return o; | |
1193 | } | |
1194 | ||
c5be433b GS |
1195 | void |
1196 | Perl_vcroak(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1197 | { |
73d840c0 | 1198 | const char *message; |
06bf62c7 | 1199 | STRLEN msglen; |
ff882698 | 1200 | I32 utf8 = 0; |
a687059c | 1201 | |
3ab1ac99 | 1202 | message = S_vdie_croak_common(aTHX_ pat, args, &msglen, &utf8); |
5a844595 | 1203 | |
3280af22 | 1204 | if (PL_in_eval) { |
06bf62c7 | 1205 | PL_restartop = die_where(message, msglen); |
ff882698 | 1206 | SvFLAGS(ERRSV) |= utf8; |
6224f72b | 1207 | JMPENV_JUMP(3); |
a0d0e21e | 1208 | } |
84414e3e JH |
1209 | else if (!message) |
1210 | message = SvPVx(ERRSV, msglen); | |
1211 | ||
7ff03255 | 1212 | write_to_stderr(message, msglen); |
f86702cc | 1213 | my_failure_exit(); |
a687059c LW |
1214 | } |
1215 | ||
c5be433b | 1216 | #if defined(PERL_IMPLICIT_CONTEXT) |
8990e307 | 1217 | void |
cea2e8a9 | 1218 | Perl_croak_nocontext(const char *pat, ...) |
a687059c | 1219 | { |
cea2e8a9 | 1220 | dTHX; |
a687059c | 1221 | va_list args; |
cea2e8a9 | 1222 | va_start(args, pat); |
c5be433b | 1223 | vcroak(pat, &args); |
cea2e8a9 GS |
1224 | /* NOTREACHED */ |
1225 | va_end(args); | |
1226 | } | |
1227 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1228 | ||
954c1994 | 1229 | /* |
ccfc67b7 JH |
1230 | =head1 Warning and Dieing |
1231 | ||
954c1994 GS |
1232 | =for apidoc croak |
1233 | ||
9983fa3c | 1234 | This is the XSUB-writer's interface to Perl's C<die> function. |
966353fd MF |
1235 | Normally call this function the same way you call the C C<printf> |
1236 | function. Calling C<croak> returns control directly to Perl, | |
1237 | sidestepping the normal C order of execution. See C<warn>. | |
9983fa3c GS |
1238 | |
1239 | If you want to throw an exception object, assign the object to | |
1240 | C<$@> and then pass C<Nullch> to croak(): | |
1241 | ||
1242 | errsv = get_sv("@", TRUE); | |
1243 | sv_setsv(errsv, exception_object); | |
1244 | croak(Nullch); | |
954c1994 GS |
1245 | |
1246 | =cut | |
1247 | */ | |
1248 | ||
cea2e8a9 GS |
1249 | void |
1250 | Perl_croak(pTHX_ const char *pat, ...) | |
1251 | { | |
1252 | va_list args; | |
1253 | va_start(args, pat); | |
c5be433b | 1254 | vcroak(pat, &args); |
cea2e8a9 GS |
1255 | /* NOTREACHED */ |
1256 | va_end(args); | |
1257 | } | |
1258 | ||
c5be433b GS |
1259 | void |
1260 | Perl_vwarn(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1261 | { |
27da23d5 | 1262 | dVAR; |
de3bb511 | 1263 | char *message; |
748a9306 LW |
1264 | HV *stash; |
1265 | GV *gv; | |
1266 | CV *cv; | |
06bf62c7 GS |
1267 | SV *msv; |
1268 | STRLEN msglen; | |
ff882698 | 1269 | I32 utf8 = 0; |
a687059c | 1270 | |
5a844595 | 1271 | msv = vmess(pat, args); |
ff882698 | 1272 | utf8 = SvUTF8(msv); |
06bf62c7 | 1273 | message = SvPV(msv, msglen); |
a687059c | 1274 | |
3280af22 | 1275 | if (PL_warnhook) { |
cea2e8a9 | 1276 | /* sv_2cv might call Perl_warn() */ |
3280af22 | 1277 | SV *oldwarnhook = PL_warnhook; |
1738f5c4 | 1278 | ENTER; |
3280af22 NIS |
1279 | SAVESPTR(PL_warnhook); |
1280 | PL_warnhook = Nullsv; | |
20cec16a | 1281 | cv = sv_2cv(oldwarnhook, &stash, &gv, 0); |
1738f5c4 CS |
1282 | LEAVE; |
1283 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
20cec16a | 1284 | dSP; |
774d564b | 1285 | SV *msg; |
1286 | ||
1287 | ENTER; | |
3a1f2dc9 | 1288 | save_re_context(); |
06bf62c7 | 1289 | msg = newSVpvn(message, msglen); |
ff882698 | 1290 | SvFLAGS(msg) |= utf8; |
774d564b | 1291 | SvREADONLY_on(msg); |
1292 | SAVEFREESV(msg); | |
1293 | ||
e788e7d3 | 1294 | PUSHSTACKi(PERLSI_WARNHOOK); |
924508f0 | 1295 | PUSHMARK(SP); |
774d564b | 1296 | XPUSHs(msg); |
20cec16a | 1297 | PUTBACK; |
864dbfa3 | 1298 | call_sv((SV*)cv, G_DISCARD); |
d3acc0f7 | 1299 | POPSTACK; |
774d564b | 1300 | LEAVE; |
20cec16a | 1301 | return; |
1302 | } | |
748a9306 | 1303 | } |
87582a92 | 1304 | |
7ff03255 | 1305 | write_to_stderr(message, msglen); |
a687059c | 1306 | } |
8d063cd8 | 1307 | |
c5be433b | 1308 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1309 | void |
1310 | Perl_warn_nocontext(const char *pat, ...) | |
1311 | { | |
1312 | dTHX; | |
1313 | va_list args; | |
1314 | va_start(args, pat); | |
c5be433b | 1315 | vwarn(pat, &args); |
cea2e8a9 GS |
1316 | va_end(args); |
1317 | } | |
1318 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1319 | ||
954c1994 GS |
1320 | /* |
1321 | =for apidoc warn | |
1322 | ||
966353fd MF |
1323 | This is the XSUB-writer's interface to Perl's C<warn> function. Call this |
1324 | function the same way you call the C C<printf> function. See C<croak>. | |
954c1994 GS |
1325 | |
1326 | =cut | |
1327 | */ | |
1328 | ||
cea2e8a9 GS |
1329 | void |
1330 | Perl_warn(pTHX_ const char *pat, ...) | |
1331 | { | |
1332 | va_list args; | |
1333 | va_start(args, pat); | |
c5be433b | 1334 | vwarn(pat, &args); |
cea2e8a9 GS |
1335 | va_end(args); |
1336 | } | |
1337 | ||
c5be433b GS |
1338 | #if defined(PERL_IMPLICIT_CONTEXT) |
1339 | void | |
1340 | Perl_warner_nocontext(U32 err, const char *pat, ...) | |
1341 | { | |
27da23d5 | 1342 | dTHX; |
c5be433b GS |
1343 | va_list args; |
1344 | va_start(args, pat); | |
1345 | vwarner(err, pat, &args); | |
1346 | va_end(args); | |
1347 | } | |
1348 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1349 | ||
599cee73 | 1350 | void |
864dbfa3 | 1351 | Perl_warner(pTHX_ U32 err, const char* pat,...) |
599cee73 PM |
1352 | { |
1353 | va_list args; | |
c5be433b GS |
1354 | va_start(args, pat); |
1355 | vwarner(err, pat, &args); | |
1356 | va_end(args); | |
1357 | } | |
1358 | ||
1359 | void | |
1360 | Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args) | |
1361 | { | |
27da23d5 | 1362 | dVAR; |
d13b0d77 | 1363 | if (ckDEAD(err)) { |
63315e18 | 1364 | SV *msv = vmess(pat, args); |
d13b0d77 | 1365 | STRLEN msglen; |
e1ec3a88 | 1366 | const char *message = SvPV(msv, msglen); |
63315e18 | 1367 | I32 utf8 = SvUTF8(msv); |
599cee73 | 1368 | |
3aed30dc | 1369 | if (PL_diehook) { |
63315e18 NC |
1370 | assert(message); |
1371 | S_vdie_common(aTHX_ message, msglen, utf8); | |
3aed30dc HS |
1372 | } |
1373 | if (PL_in_eval) { | |
1374 | PL_restartop = die_where(message, msglen); | |
ff882698 | 1375 | SvFLAGS(ERRSV) |= utf8; |
3aed30dc HS |
1376 | JMPENV_JUMP(3); |
1377 | } | |
7ff03255 | 1378 | write_to_stderr(message, msglen); |
3aed30dc | 1379 | my_failure_exit(); |
599cee73 PM |
1380 | } |
1381 | else { | |
d13b0d77 | 1382 | Perl_vwarn(aTHX_ pat, args); |
599cee73 PM |
1383 | } |
1384 | } | |
1385 | ||
e6587932 DM |
1386 | /* since we've already done strlen() for both nam and val |
1387 | * we can use that info to make things faster than | |
1388 | * sprintf(s, "%s=%s", nam, val) | |
1389 | */ | |
1390 | #define my_setenv_format(s, nam, nlen, val, vlen) \ | |
1391 | Copy(nam, s, nlen, char); \ | |
1392 | *(s+nlen) = '='; \ | |
1393 | Copy(val, s+(nlen+1), vlen, char); \ | |
1394 | *(s+(nlen+1+vlen)) = '\0' | |
1395 | ||
13b6e58c | 1396 | #ifdef USE_ENVIRON_ARRAY |
eccd403f | 1397 | /* VMS' my_setenv() is in vms.c */ |
2986a63f | 1398 | #if !defined(WIN32) && !defined(NETWARE) |
8d063cd8 | 1399 | void |
e1ec3a88 | 1400 | Perl_my_setenv(pTHX_ const char *nam, const char *val) |
8d063cd8 | 1401 | { |
27da23d5 | 1402 | dVAR; |
4efc5df6 GS |
1403 | #ifdef USE_ITHREADS |
1404 | /* only parent thread can modify process environment */ | |
1405 | if (PL_curinterp == aTHX) | |
1406 | #endif | |
1407 | { | |
f2517201 | 1408 | #ifndef PERL_USE_SAFE_PUTENV |
50acdf95 | 1409 | if (!PL_use_safe_putenv) { |
f2517201 | 1410 | /* most putenv()s leak, so we manipulate environ directly */ |
79072805 | 1411 | register I32 i=setenv_getix(nam); /* where does it go? */ |
e6587932 | 1412 | int nlen, vlen; |
8d063cd8 | 1413 | |
3280af22 | 1414 | if (environ == PL_origenviron) { /* need we copy environment? */ |
79072805 LW |
1415 | I32 j; |
1416 | I32 max; | |
fe14fcc3 LW |
1417 | char **tmpenv; |
1418 | ||
de3bb511 | 1419 | /*SUPPRESS 530*/ |
fe14fcc3 | 1420 | for (max = i; environ[max]; max++) ; |
f2517201 GS |
1421 | tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*)); |
1422 | for (j=0; j<max; j++) { /* copy environment */ | |
e1ec3a88 | 1423 | const int len = strlen(environ[j]); |
3aed30dc HS |
1424 | tmpenv[j] = (char*)safesysmalloc((len+1)*sizeof(char)); |
1425 | Copy(environ[j], tmpenv[j], len+1, char); | |
f2517201 | 1426 | } |
fe14fcc3 LW |
1427 | tmpenv[max] = Nullch; |
1428 | environ = tmpenv; /* tell exec where it is now */ | |
1429 | } | |
a687059c | 1430 | if (!val) { |
f2517201 | 1431 | safesysfree(environ[i]); |
a687059c LW |
1432 | while (environ[i]) { |
1433 | environ[i] = environ[i+1]; | |
1434 | i++; | |
1435 | } | |
1436 | return; | |
1437 | } | |
8d063cd8 | 1438 | if (!environ[i]) { /* does not exist yet */ |
f2517201 | 1439 | environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*)); |
8d063cd8 LW |
1440 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
1441 | } | |
fe14fcc3 | 1442 | else |
f2517201 | 1443 | safesysfree(environ[i]); |
e6587932 DM |
1444 | nlen = strlen(nam); |
1445 | vlen = strlen(val); | |
f2517201 | 1446 | |
e6587932 DM |
1447 | environ[i] = (char*)safesysmalloc((nlen+vlen+2) * sizeof(char)); |
1448 | /* all that work just for this */ | |
1449 | my_setenv_format(environ[i], nam, nlen, val, vlen); | |
50acdf95 MS |
1450 | } else { |
1451 | # endif | |
27da23d5 | 1452 | # if defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN) |
47dafe4d EF |
1453 | setenv(nam, val, 1); |
1454 | # else | |
f2517201 | 1455 | char *new_env; |
e6587932 DM |
1456 | int nlen = strlen(nam), vlen; |
1457 | if (!val) { | |
3aed30dc | 1458 | val = ""; |
e6587932 DM |
1459 | } |
1460 | vlen = strlen(val); | |
1461 | new_env = (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); | |
1462 | /* all that work just for this */ | |
1463 | my_setenv_format(new_env, nam, nlen, val, vlen); | |
f2517201 | 1464 | (void)putenv(new_env); |
47dafe4d | 1465 | # endif /* __CYGWIN__ */ |
50acdf95 MS |
1466 | #ifndef PERL_USE_SAFE_PUTENV |
1467 | } | |
1468 | #endif | |
4efc5df6 | 1469 | } |
8d063cd8 LW |
1470 | } |
1471 | ||
2986a63f | 1472 | #else /* WIN32 || NETWARE */ |
68dc0745 | 1473 | |
1474 | void | |
72229eff | 1475 | Perl_my_setenv(pTHX_ const char *nam, const char *val) |
68dc0745 | 1476 | { |
27da23d5 | 1477 | dVAR; |
ac5c734f | 1478 | register char *envstr; |
e1ec3a88 AL |
1479 | const int nlen = strlen(nam); |
1480 | int vlen; | |
e6587932 | 1481 | |
ac5c734f GS |
1482 | if (!val) { |
1483 | val = ""; | |
1484 | } | |
e6587932 DM |
1485 | vlen = strlen(val); |
1486 | New(904, envstr, nlen+vlen+2, char); | |
1487 | my_setenv_format(envstr, nam, nlen, val, vlen); | |
ac5c734f GS |
1488 | (void)PerlEnv_putenv(envstr); |
1489 | Safefree(envstr); | |
3e3baf6d TB |
1490 | } |
1491 | ||
2986a63f | 1492 | #endif /* WIN32 || NETWARE */ |
3e3baf6d | 1493 | |
2f42fcb0 | 1494 | #ifndef PERL_MICRO |
3e3baf6d | 1495 | I32 |
e1ec3a88 | 1496 | Perl_setenv_getix(pTHX_ const char *nam) |
3e3baf6d TB |
1497 | { |
1498 | register I32 i, len = strlen(nam); | |
1499 | ||
1500 | for (i = 0; environ[i]; i++) { | |
1501 | if ( | |
1502 | #ifdef WIN32 | |
1503 | strnicmp(environ[i],nam,len) == 0 | |
1504 | #else | |
1505 | strnEQ(environ[i],nam,len) | |
1506 | #endif | |
1507 | && environ[i][len] == '=') | |
1508 | break; /* strnEQ must come first to avoid */ | |
1509 | } /* potential SEGV's */ | |
1510 | return i; | |
68dc0745 | 1511 | } |
2f42fcb0 | 1512 | #endif /* !PERL_MICRO */ |
68dc0745 | 1513 | |
ed79a026 | 1514 | #endif /* !VMS && !EPOC*/ |
378cc40b | 1515 | |
16d20bd9 | 1516 | #ifdef UNLINK_ALL_VERSIONS |
79072805 | 1517 | I32 |
864dbfa3 | 1518 | Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */ |
378cc40b | 1519 | { |
79072805 | 1520 | I32 i; |
378cc40b | 1521 | |
6ad3d225 | 1522 | for (i = 0; PerlLIO_unlink(f) >= 0; i++) ; |
378cc40b LW |
1523 | return i ? 0 : -1; |
1524 | } | |
1525 | #endif | |
1526 | ||
7a3f2258 | 1527 | /* this is a drop-in replacement for bcopy() */ |
2253333f | 1528 | #if (!defined(HAS_MEMCPY) && !defined(HAS_BCOPY)) || (!defined(HAS_MEMMOVE) && !defined(HAS_SAFE_MEMCPY) && !defined(HAS_SAFE_BCOPY)) |
378cc40b | 1529 | char * |
7a3f2258 | 1530 | Perl_my_bcopy(register const char *from,register char *to,register I32 len) |
378cc40b LW |
1531 | { |
1532 | char *retval = to; | |
1533 | ||
7c0587c8 LW |
1534 | if (from - to >= 0) { |
1535 | while (len--) | |
1536 | *to++ = *from++; | |
1537 | } | |
1538 | else { | |
1539 | to += len; | |
1540 | from += len; | |
1541 | while (len--) | |
faf8582f | 1542 | *(--to) = *(--from); |
7c0587c8 | 1543 | } |
378cc40b LW |
1544 | return retval; |
1545 | } | |
ffed7fef | 1546 | #endif |
378cc40b | 1547 | |
7a3f2258 | 1548 | /* this is a drop-in replacement for memset() */ |
fc36a67e | 1549 | #ifndef HAS_MEMSET |
1550 | void * | |
7a3f2258 | 1551 | Perl_my_memset(register char *loc, register I32 ch, register I32 len) |
fc36a67e | 1552 | { |
1553 | char *retval = loc; | |
1554 | ||
1555 | while (len--) | |
1556 | *loc++ = ch; | |
1557 | return retval; | |
1558 | } | |
1559 | #endif | |
1560 | ||
7a3f2258 | 1561 | /* this is a drop-in replacement for bzero() */ |
7c0587c8 | 1562 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
378cc40b | 1563 | char * |
7a3f2258 | 1564 | Perl_my_bzero(register char *loc, register I32 len) |
378cc40b LW |
1565 | { |
1566 | char *retval = loc; | |
1567 | ||
1568 | while (len--) | |
1569 | *loc++ = 0; | |
1570 | return retval; | |
1571 | } | |
1572 | #endif | |
7c0587c8 | 1573 | |
7a3f2258 | 1574 | /* this is a drop-in replacement for memcmp() */ |
36477c24 | 1575 | #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP) |
79072805 | 1576 | I32 |
7a3f2258 | 1577 | Perl_my_memcmp(const char *s1, const char *s2, register I32 len) |
7c0587c8 | 1578 | { |
e1ec3a88 AL |
1579 | register const U8 *a = (const U8 *)s1; |
1580 | register const U8 *b = (const U8 *)s2; | |
79072805 | 1581 | register I32 tmp; |
7c0587c8 LW |
1582 | |
1583 | while (len--) { | |
27da23d5 | 1584 | if ((tmp = *a++ - *b++)) |
7c0587c8 LW |
1585 | return tmp; |
1586 | } | |
1587 | return 0; | |
1588 | } | |
36477c24 | 1589 | #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */ |
a687059c | 1590 | |
fe14fcc3 | 1591 | #ifndef HAS_VPRINTF |
a687059c | 1592 | |
85e6fe83 | 1593 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1594 | char * |
1595 | #else | |
1596 | int | |
1597 | #endif | |
08105a92 | 1598 | vsprintf(char *dest, const char *pat, char *args) |
a687059c LW |
1599 | { |
1600 | FILE fakebuf; | |
1601 | ||
1602 | fakebuf._ptr = dest; | |
1603 | fakebuf._cnt = 32767; | |
35c8bce7 LW |
1604 | #ifndef _IOSTRG |
1605 | #define _IOSTRG 0 | |
1606 | #endif | |
a687059c LW |
1607 | fakebuf._flag = _IOWRT|_IOSTRG; |
1608 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1609 | (void)putc('\0', &fakebuf); | |
85e6fe83 | 1610 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1611 | return(dest); |
1612 | #else | |
1613 | return 0; /* perl doesn't use return value */ | |
1614 | #endif | |
1615 | } | |
1616 | ||
fe14fcc3 | 1617 | #endif /* HAS_VPRINTF */ |
a687059c LW |
1618 | |
1619 | #ifdef MYSWAP | |
ffed7fef | 1620 | #if BYTEORDER != 0x4321 |
a687059c | 1621 | short |
864dbfa3 | 1622 | Perl_my_swap(pTHX_ short s) |
a687059c LW |
1623 | { |
1624 | #if (BYTEORDER & 1) == 0 | |
1625 | short result; | |
1626 | ||
1627 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1628 | return result; | |
1629 | #else | |
1630 | return s; | |
1631 | #endif | |
1632 | } | |
1633 | ||
1634 | long | |
864dbfa3 | 1635 | Perl_my_htonl(pTHX_ long l) |
a687059c LW |
1636 | { |
1637 | union { | |
1638 | long result; | |
ffed7fef | 1639 | char c[sizeof(long)]; |
a687059c LW |
1640 | } u; |
1641 | ||
ffed7fef | 1642 | #if BYTEORDER == 0x1234 |
a687059c LW |
1643 | u.c[0] = (l >> 24) & 255; |
1644 | u.c[1] = (l >> 16) & 255; | |
1645 | u.c[2] = (l >> 8) & 255; | |
1646 | u.c[3] = l & 255; | |
1647 | return u.result; | |
1648 | #else | |
ffed7fef | 1649 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
cea2e8a9 | 1650 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
a687059c | 1651 | #else |
79072805 LW |
1652 | register I32 o; |
1653 | register I32 s; | |
a687059c | 1654 | |
ffed7fef LW |
1655 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1656 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1657 | } |
1658 | return u.result; | |
1659 | #endif | |
1660 | #endif | |
1661 | } | |
1662 | ||
1663 | long | |
864dbfa3 | 1664 | Perl_my_ntohl(pTHX_ long l) |
a687059c LW |
1665 | { |
1666 | union { | |
1667 | long l; | |
ffed7fef | 1668 | char c[sizeof(long)]; |
a687059c LW |
1669 | } u; |
1670 | ||
ffed7fef | 1671 | #if BYTEORDER == 0x1234 |
a687059c LW |
1672 | u.c[0] = (l >> 24) & 255; |
1673 | u.c[1] = (l >> 16) & 255; | |
1674 | u.c[2] = (l >> 8) & 255; | |
1675 | u.c[3] = l & 255; | |
1676 | return u.l; | |
1677 | #else | |
ffed7fef | 1678 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
cea2e8a9 | 1679 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
a687059c | 1680 | #else |
79072805 LW |
1681 | register I32 o; |
1682 | register I32 s; | |
a687059c LW |
1683 | |
1684 | u.l = l; | |
1685 | l = 0; | |
ffed7fef LW |
1686 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1687 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1688 | } |
1689 | return l; | |
1690 | #endif | |
1691 | #endif | |
1692 | } | |
1693 | ||
ffed7fef | 1694 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 LW |
1695 | #endif /* MYSWAP */ |
1696 | ||
1697 | /* | |
1698 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. | |
1699 | * If these functions are defined, | |
1700 | * the BYTEORDER is neither 0x1234 nor 0x4321. | |
1701 | * However, this is not assumed. | |
1702 | * -DWS | |
1703 | */ | |
1704 | ||
1109a392 | 1705 | #define HTOLE(name,type) \ |
988174c1 | 1706 | type \ |
ba106d47 | 1707 | name (register type n) \ |
988174c1 LW |
1708 | { \ |
1709 | union { \ | |
1710 | type value; \ | |
1711 | char c[sizeof(type)]; \ | |
1712 | } u; \ | |
79072805 | 1713 | register I32 i; \ |
1109a392 MHM |
1714 | register I32 s = 0; \ |
1715 | for (i = 0; i < sizeof(u.c); i++, s += 8) { \ | |
988174c1 LW |
1716 | u.c[i] = (n >> s) & 0xFF; \ |
1717 | } \ | |
1718 | return u.value; \ | |
1719 | } | |
1720 | ||
1109a392 | 1721 | #define LETOH(name,type) \ |
988174c1 | 1722 | type \ |
ba106d47 | 1723 | name (register type n) \ |
988174c1 LW |
1724 | { \ |
1725 | union { \ | |
1726 | type value; \ | |
1727 | char c[sizeof(type)]; \ | |
1728 | } u; \ | |
79072805 | 1729 | register I32 i; \ |
1109a392 | 1730 | register I32 s = 0; \ |
988174c1 LW |
1731 | u.value = n; \ |
1732 | n = 0; \ | |
1109a392 MHM |
1733 | for (i = 0; i < sizeof(u.c); i++, s += 8) { \ |
1734 | n |= ((type)(u.c[i] & 0xFF)) << s; \ | |
988174c1 LW |
1735 | } \ |
1736 | return n; \ | |
1737 | } | |
1738 | ||
1109a392 MHM |
1739 | /* |
1740 | * Big-endian byte order functions. | |
1741 | */ | |
1742 | ||
1743 | #define HTOBE(name,type) \ | |
1744 | type \ | |
1745 | name (register type n) \ | |
1746 | { \ | |
1747 | union { \ | |
1748 | type value; \ | |
1749 | char c[sizeof(type)]; \ | |
1750 | } u; \ | |
1751 | register I32 i; \ | |
1752 | register I32 s = 8*(sizeof(u.c)-1); \ | |
1753 | for (i = 0; i < sizeof(u.c); i++, s -= 8) { \ | |
1754 | u.c[i] = (n >> s) & 0xFF; \ | |
1755 | } \ | |
1756 | return u.value; \ | |
1757 | } | |
1758 | ||
1759 | #define BETOH(name,type) \ | |
1760 | type \ | |
1761 | name (register type n) \ | |
1762 | { \ | |
1763 | union { \ | |
1764 | type value; \ | |
1765 | char c[sizeof(type)]; \ | |
1766 | } u; \ | |
1767 | register I32 i; \ | |
1768 | register I32 s = 8*(sizeof(u.c)-1); \ | |
1769 | u.value = n; \ | |
1770 | n = 0; \ | |
1771 | for (i = 0; i < sizeof(u.c); i++, s -= 8) { \ | |
1772 | n |= ((type)(u.c[i] & 0xFF)) << s; \ | |
1773 | } \ | |
1774 | return n; \ | |
1775 | } | |
1776 | ||
1777 | /* | |
1778 | * If we just can't do it... | |
1779 | */ | |
1780 | ||
1781 | #define NOT_AVAIL(name,type) \ | |
1782 | type \ | |
1783 | name (register type n) \ | |
1784 | { \ | |
1785 | Perl_croak_nocontext(#name "() not available"); \ | |
1786 | return n; /* not reached */ \ | |
1787 | } | |
1788 | ||
1789 | ||
988174c1 | 1790 | #if defined(HAS_HTOVS) && !defined(htovs) |
1109a392 | 1791 | HTOLE(htovs,short) |
988174c1 LW |
1792 | #endif |
1793 | #if defined(HAS_HTOVL) && !defined(htovl) | |
1109a392 | 1794 | HTOLE(htovl,long) |
988174c1 LW |
1795 | #endif |
1796 | #if defined(HAS_VTOHS) && !defined(vtohs) | |
1109a392 | 1797 | LETOH(vtohs,short) |
988174c1 LW |
1798 | #endif |
1799 | #if defined(HAS_VTOHL) && !defined(vtohl) | |
1109a392 MHM |
1800 | LETOH(vtohl,long) |
1801 | #endif | |
1802 | ||
1803 | #ifdef PERL_NEED_MY_HTOLE16 | |
1804 | # if U16SIZE == 2 | |
1805 | HTOLE(Perl_my_htole16,U16) | |
1806 | # else | |
1807 | NOT_AVAIL(Perl_my_htole16,U16) | |
1808 | # endif | |
1809 | #endif | |
1810 | #ifdef PERL_NEED_MY_LETOH16 | |
1811 | # if U16SIZE == 2 | |
1812 | LETOH(Perl_my_letoh16,U16) | |
1813 | # else | |
1814 | NOT_AVAIL(Perl_my_letoh16,U16) | |
1815 | # endif | |
1816 | #endif | |
1817 | #ifdef PERL_NEED_MY_HTOBE16 | |
1818 | # if U16SIZE == 2 | |
1819 | HTOBE(Perl_my_htobe16,U16) | |
1820 | # else | |
1821 | NOT_AVAIL(Perl_my_htobe16,U16) | |
1822 | # endif | |
1823 | #endif | |
1824 | #ifdef PERL_NEED_MY_BETOH16 | |
1825 | # if U16SIZE == 2 | |
1826 | BETOH(Perl_my_betoh16,U16) | |
1827 | # else | |
1828 | NOT_AVAIL(Perl_my_betoh16,U16) | |
1829 | # endif | |
1830 | #endif | |
1831 | ||
1832 | #ifdef PERL_NEED_MY_HTOLE32 | |
1833 | # if U32SIZE == 4 | |
1834 | HTOLE(Perl_my_htole32,U32) | |
1835 | # else | |
1836 | NOT_AVAIL(Perl_my_htole32,U32) | |
1837 | # endif | |
1838 | #endif | |
1839 | #ifdef PERL_NEED_MY_LETOH32 | |
1840 | # if U32SIZE == 4 | |
1841 | LETOH(Perl_my_letoh32,U32) | |
1842 | # else | |
1843 | NOT_AVAIL(Perl_my_letoh32,U32) | |
1844 | # endif | |
1845 | #endif | |
1846 | #ifdef PERL_NEED_MY_HTOBE32 | |
1847 | # if U32SIZE == 4 | |
1848 | HTOBE(Perl_my_htobe32,U32) | |
1849 | # else | |
1850 | NOT_AVAIL(Perl_my_htobe32,U32) | |
1851 | # endif | |
1852 | #endif | |
1853 | #ifdef PERL_NEED_MY_BETOH32 | |
1854 | # if U32SIZE == 4 | |
1855 | BETOH(Perl_my_betoh32,U32) | |
1856 | # else | |
1857 | NOT_AVAIL(Perl_my_betoh32,U32) | |
1858 | # endif | |
1859 | #endif | |
1860 | ||
1861 | #ifdef PERL_NEED_MY_HTOLE64 | |
1862 | # if U64SIZE == 8 | |
1863 | HTOLE(Perl_my_htole64,U64) | |
1864 | # else | |
1865 | NOT_AVAIL(Perl_my_htole64,U64) | |
1866 | # endif | |
1867 | #endif | |
1868 | #ifdef PERL_NEED_MY_LETOH64 | |
1869 | # if U64SIZE == 8 | |
1870 | LETOH(Perl_my_letoh64,U64) | |
1871 | # else | |
1872 | NOT_AVAIL(Perl_my_letoh64,U64) | |
1873 | # endif | |
1874 | #endif | |
1875 | #ifdef PERL_NEED_MY_HTOBE64 | |
1876 | # if U64SIZE == 8 | |
1877 | HTOBE(Perl_my_htobe64,U64) | |
1878 | # else | |
1879 | NOT_AVAIL(Perl_my_htobe64,U64) | |
1880 | # endif | |
1881 | #endif | |
1882 | #ifdef PERL_NEED_MY_BETOH64 | |
1883 | # if U64SIZE == 8 | |
1884 | BETOH(Perl_my_betoh64,U64) | |
1885 | # else | |
1886 | NOT_AVAIL(Perl_my_betoh64,U64) | |
1887 | # endif | |
988174c1 | 1888 | #endif |
a687059c | 1889 | |
1109a392 MHM |
1890 | #ifdef PERL_NEED_MY_HTOLES |
1891 | HTOLE(Perl_my_htoles,short) | |
1892 | #endif | |
1893 | #ifdef PERL_NEED_MY_LETOHS | |
1894 | LETOH(Perl_my_letohs,short) | |
1895 | #endif | |
1896 | #ifdef PERL_NEED_MY_HTOBES | |
1897 | HTOBE(Perl_my_htobes,short) | |
1898 | #endif | |
1899 | #ifdef PERL_NEED_MY_BETOHS | |
1900 | BETOH(Perl_my_betohs,short) | |
1901 | #endif | |
1902 | ||
1903 | #ifdef PERL_NEED_MY_HTOLEI | |
1904 | HTOLE(Perl_my_htolei,int) | |
1905 | #endif | |
1906 | #ifdef PERL_NEED_MY_LETOHI | |
1907 | LETOH(Perl_my_letohi,int) | |
1908 | #endif | |
1909 | #ifdef PERL_NEED_MY_HTOBEI | |
1910 | HTOBE(Perl_my_htobei,int) | |
1911 | #endif | |
1912 | #ifdef PERL_NEED_MY_BETOHI | |
1913 | BETOH(Perl_my_betohi,int) | |
1914 | #endif | |
1915 | ||
1916 | #ifdef PERL_NEED_MY_HTOLEL | |
1917 | HTOLE(Perl_my_htolel,long) | |
1918 | #endif | |
1919 | #ifdef PERL_NEED_MY_LETOHL | |
1920 | LETOH(Perl_my_letohl,long) | |
1921 | #endif | |
1922 | #ifdef PERL_NEED_MY_HTOBEL | |
1923 | HTOBE(Perl_my_htobel,long) | |
1924 | #endif | |
1925 | #ifdef PERL_NEED_MY_BETOHL | |
1926 | BETOH(Perl_my_betohl,long) | |
1927 | #endif | |
1928 | ||
1929 | void | |
1930 | Perl_my_swabn(void *ptr, int n) | |
1931 | { | |
1932 | register char *s = (char *)ptr; | |
1933 | register char *e = s + (n-1); | |
1934 | register char tc; | |
1935 | ||
1936 | for (n /= 2; n > 0; s++, e--, n--) { | |
1937 | tc = *s; | |
1938 | *s = *e; | |
1939 | *e = tc; | |
1940 | } | |
1941 | } | |
1942 | ||
4a7d1889 NIS |
1943 | PerlIO * |
1944 | Perl_my_popen_list(pTHX_ char *mode, int n, SV **args) | |
1945 | { | |
2986a63f | 1946 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(OS2) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) && !defined(NETWARE) |
1f852d0d NIS |
1947 | int p[2]; |
1948 | register I32 This, that; | |
1949 | register Pid_t pid; | |
1950 | SV *sv; | |
1951 | I32 did_pipes = 0; | |
1952 | int pp[2]; | |
1953 | ||
1954 | PERL_FLUSHALL_FOR_CHILD; | |
1955 | This = (*mode == 'w'); | |
1956 | that = !This; | |
1957 | if (PL_tainting) { | |
1958 | taint_env(); | |
1959 | taint_proper("Insecure %s%s", "EXEC"); | |
1960 | } | |
1961 | if (PerlProc_pipe(p) < 0) | |
1962 | return Nullfp; | |
1963 | /* Try for another pipe pair for error return */ | |
1964 | if (PerlProc_pipe(pp) >= 0) | |
1965 | did_pipes = 1; | |
52e18b1f | 1966 | while ((pid = PerlProc_fork()) < 0) { |
1f852d0d NIS |
1967 | if (errno != EAGAIN) { |
1968 | PerlLIO_close(p[This]); | |
4e6dfe71 | 1969 | PerlLIO_close(p[that]); |
1f852d0d NIS |
1970 | if (did_pipes) { |
1971 | PerlLIO_close(pp[0]); | |
1972 | PerlLIO_close(pp[1]); | |
1973 | } | |
1974 | return Nullfp; | |
1975 | } | |
1976 | sleep(5); | |
1977 | } | |
1978 | if (pid == 0) { | |
1979 | /* Child */ | |
1f852d0d NIS |
1980 | #undef THIS |
1981 | #undef THAT | |
1982 | #define THIS that | |
1983 | #define THAT This | |
1f852d0d NIS |
1984 | /* Close parent's end of error status pipe (if any) */ |
1985 | if (did_pipes) { | |
1986 | PerlLIO_close(pp[0]); | |
1987 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
1988 | /* Close error pipe automatically if exec works */ | |
1989 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); | |
1990 | #endif | |
1991 | } | |
1992 | /* Now dup our end of _the_ pipe to right position */ | |
1993 | if (p[THIS] != (*mode == 'r')) { | |
1994 | PerlLIO_dup2(p[THIS], *mode == 'r'); | |
1995 | PerlLIO_close(p[THIS]); | |
4e6dfe71 GS |
1996 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
1997 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ | |
1f852d0d | 1998 | } |
4e6dfe71 GS |
1999 | else |
2000 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ | |
1f852d0d NIS |
2001 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
2002 | /* No automatic close - do it by hand */ | |
b7953727 JH |
2003 | # ifndef NOFILE |
2004 | # define NOFILE 20 | |
2005 | # endif | |
a080fe3d NIS |
2006 | { |
2007 | int fd; | |
2008 | ||
2009 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) { | |
3aed30dc | 2010 | if (fd != pp[1]) |
a080fe3d NIS |
2011 | PerlLIO_close(fd); |
2012 | } | |
1f852d0d NIS |
2013 | } |
2014 | #endif | |
2015 | do_aexec5(Nullsv, args-1, args-1+n, pp[1], did_pipes); | |
2016 | PerlProc__exit(1); | |
2017 | #undef THIS | |
2018 | #undef THAT | |
2019 | } | |
2020 | /* Parent */ | |
52e18b1f | 2021 | do_execfree(); /* free any memory malloced by child on fork */ |
1f852d0d NIS |
2022 | if (did_pipes) |
2023 | PerlLIO_close(pp[1]); | |
2024 | /* Keep the lower of the two fd numbers */ | |
2025 | if (p[that] < p[This]) { | |
2026 | PerlLIO_dup2(p[This], p[that]); | |
2027 | PerlLIO_close(p[This]); | |
2028 | p[This] = p[that]; | |
2029 | } | |
4e6dfe71 GS |
2030 | else |
2031 | PerlLIO_close(p[that]); /* close child's end of pipe */ | |
2032 | ||
1f852d0d NIS |
2033 | LOCK_FDPID_MUTEX; |
2034 | sv = *av_fetch(PL_fdpid,p[This],TRUE); | |
2035 | UNLOCK_FDPID_MUTEX; | |
2036 | (void)SvUPGRADE(sv,SVt_IV); | |
45977657 | 2037 | SvIV_set(sv, pid); |
1f852d0d NIS |
2038 | PL_forkprocess = pid; |
2039 | /* If we managed to get status pipe check for exec fail */ | |
2040 | if (did_pipes && pid > 0) { | |
2041 | int errkid; | |
2042 | int n = 0, n1; | |
2043 | ||
2044 | while (n < sizeof(int)) { | |
2045 | n1 = PerlLIO_read(pp[0], | |
2046 | (void*)(((char*)&errkid)+n), | |
2047 | (sizeof(int)) - n); | |
2048 | if (n1 <= 0) | |
2049 | break; | |
2050 | n += n1; | |
2051 | } | |
2052 | PerlLIO_close(pp[0]); | |
2053 | did_pipes = 0; | |
2054 | if (n) { /* Error */ | |
2055 | int pid2, status; | |
8c51524e | 2056 | PerlLIO_close(p[This]); |
1f852d0d NIS |
2057 | if (n != sizeof(int)) |
2058 | Perl_croak(aTHX_ "panic: kid popen errno read"); | |
2059 | do { | |
2060 | pid2 = wait4pid(pid, &status, 0); | |
2061 | } while (pid2 == -1 && errno == EINTR); | |
2062 | errno = errkid; /* Propagate errno from kid */ | |
2063 | return Nullfp; | |
2064 | } | |
2065 | } | |
2066 | if (did_pipes) | |
2067 | PerlLIO_close(pp[0]); | |
2068 | return PerlIO_fdopen(p[This], mode); | |
2069 | #else | |
4a7d1889 NIS |
2070 | Perl_croak(aTHX_ "List form of piped open not implemented"); |
2071 | return (PerlIO *) NULL; | |
1f852d0d | 2072 | #endif |
4a7d1889 NIS |
2073 | } |
2074 | ||
5f05dabc | 2075 | /* VMS' my_popen() is in VMS.c, same with OS/2. */ |
cd39f2b6 | 2076 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
760ac839 | 2077 | PerlIO * |
864dbfa3 | 2078 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
a687059c LW |
2079 | { |
2080 | int p[2]; | |
8ac85365 | 2081 | register I32 This, that; |
d8a83dd3 | 2082 | register Pid_t pid; |
79072805 | 2083 | SV *sv; |
770526c1 | 2084 | I32 doexec = !(*cmd == '-' && cmd[1] == '\0'); |
e446cec8 IZ |
2085 | I32 did_pipes = 0; |
2086 | int pp[2]; | |
a687059c | 2087 | |
45bc9206 | 2088 | PERL_FLUSHALL_FOR_CHILD; |
ddcf38b7 IZ |
2089 | #ifdef OS2 |
2090 | if (doexec) { | |
23da6c43 | 2091 | return my_syspopen(aTHX_ cmd,mode); |
ddcf38b7 | 2092 | } |
a1d180c4 | 2093 | #endif |
8ac85365 NIS |
2094 | This = (*mode == 'w'); |
2095 | that = !This; | |
3280af22 | 2096 | if (doexec && PL_tainting) { |
bbce6d69 | 2097 | taint_env(); |
2098 | taint_proper("Insecure %s%s", "EXEC"); | |
d48672a2 | 2099 | } |
c2267164 IZ |
2100 | if (PerlProc_pipe(p) < 0) |
2101 | return Nullfp; | |
e446cec8 IZ |
2102 | if (doexec && PerlProc_pipe(pp) >= 0) |
2103 | did_pipes = 1; | |
52e18b1f | 2104 | while ((pid = PerlProc_fork()) < 0) { |
a687059c | 2105 | if (errno != EAGAIN) { |
6ad3d225 | 2106 | PerlLIO_close(p[This]); |
b5ac89c3 | 2107 | PerlLIO_close(p[that]); |
e446cec8 IZ |
2108 | if (did_pipes) { |
2109 | PerlLIO_close(pp[0]); | |
2110 | PerlLIO_close(pp[1]); | |
2111 | } | |
a687059c | 2112 | if (!doexec) |
cea2e8a9 | 2113 | Perl_croak(aTHX_ "Can't fork"); |
a687059c LW |
2114 | return Nullfp; |
2115 | } | |
2116 | sleep(5); | |
2117 | } | |
2118 | if (pid == 0) { | |
79072805 LW |
2119 | GV* tmpgv; |
2120 | ||
30ac6d9b GS |
2121 | #undef THIS |
2122 | #undef THAT | |
a687059c | 2123 | #define THIS that |
8ac85365 | 2124 | #define THAT This |
e446cec8 IZ |
2125 | if (did_pipes) { |
2126 | PerlLIO_close(pp[0]); | |
2127 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
2128 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); | |
2129 | #endif | |
2130 | } | |
a687059c | 2131 | if (p[THIS] != (*mode == 'r')) { |
6ad3d225 GS |
2132 | PerlLIO_dup2(p[THIS], *mode == 'r'); |
2133 | PerlLIO_close(p[THIS]); | |
b5ac89c3 NIS |
2134 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
2135 | PerlLIO_close(p[THAT]); | |
a687059c | 2136 | } |
b5ac89c3 NIS |
2137 | else |
2138 | PerlLIO_close(p[THAT]); | |
4435c477 | 2139 | #ifndef OS2 |
a687059c | 2140 | if (doexec) { |
a0d0e21e | 2141 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 LW |
2142 | #ifndef NOFILE |
2143 | #define NOFILE 20 | |
2144 | #endif | |
a080fe3d | 2145 | { |
3aed30dc | 2146 | int fd; |
a080fe3d NIS |
2147 | |
2148 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) | |
2149 | if (fd != pp[1]) | |
3aed30dc | 2150 | PerlLIO_close(fd); |
a080fe3d | 2151 | } |
ae986130 | 2152 | #endif |
a080fe3d NIS |
2153 | /* may or may not use the shell */ |
2154 | do_exec3(cmd, pp[1], did_pipes); | |
6ad3d225 | 2155 | PerlProc__exit(1); |
a687059c | 2156 | } |
4435c477 | 2157 | #endif /* defined OS2 */ |
de3bb511 | 2158 | /*SUPPRESS 560*/ |
306196c3 | 2159 | if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) { |
4d76a344 | 2160 | SvREADONLY_off(GvSV(tmpgv)); |
7766f137 | 2161 | sv_setiv(GvSV(tmpgv), PerlProc_getpid()); |
4d76a344 RGS |
2162 | SvREADONLY_on(GvSV(tmpgv)); |
2163 | } | |
2164 | #ifdef THREADS_HAVE_PIDS | |
2165 | PL_ppid = (IV)getppid(); | |
2166 | #endif | |
3280af22 NIS |
2167 | PL_forkprocess = 0; |
2168 | hv_clear(PL_pidstatus); /* we have no children */ | |
a687059c LW |
2169 | return Nullfp; |
2170 | #undef THIS | |
2171 | #undef THAT | |
2172 | } | |
b5ac89c3 | 2173 | do_execfree(); /* free any memory malloced by child on vfork */ |
e446cec8 IZ |
2174 | if (did_pipes) |
2175 | PerlLIO_close(pp[1]); | |
8ac85365 | 2176 | if (p[that] < p[This]) { |
6ad3d225 GS |
2177 | PerlLIO_dup2(p[This], p[that]); |
2178 | PerlLIO_close(p[This]); | |
8ac85365 | 2179 | p[This] = p[that]; |
62b28dd9 | 2180 | } |
b5ac89c3 NIS |
2181 | else |
2182 | PerlLIO_close(p[that]); | |
2183 | ||
4755096e | 2184 | LOCK_FDPID_MUTEX; |
3280af22 | 2185 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
4755096e | 2186 | UNLOCK_FDPID_MUTEX; |
a0d0e21e | 2187 | (void)SvUPGRADE(sv,SVt_IV); |
45977657 | 2188 | SvIV_set(sv, pid); |
3280af22 | 2189 | PL_forkprocess = pid; |
e446cec8 IZ |
2190 | if (did_pipes && pid > 0) { |
2191 | int errkid; | |
2192 | int n = 0, n1; | |
2193 | ||
2194 | while (n < sizeof(int)) { | |
2195 | n1 = PerlLIO_read(pp[0], | |
2196 | (void*)(((char*)&errkid)+n), | |
2197 | (sizeof(int)) - n); | |
2198 | if (n1 <= 0) | |
2199 | break; | |
2200 | n += n1; | |
2201 | } | |
2f96c702 IZ |
2202 | PerlLIO_close(pp[0]); |
2203 | did_pipes = 0; | |
e446cec8 | 2204 | if (n) { /* Error */ |
faa466a7 | 2205 | int pid2, status; |
8c51524e | 2206 | PerlLIO_close(p[This]); |
e446cec8 | 2207 | if (n != sizeof(int)) |
cea2e8a9 | 2208 | Perl_croak(aTHX_ "panic: kid popen errno read"); |
faa466a7 RG |
2209 | do { |
2210 | pid2 = wait4pid(pid, &status, 0); | |
2211 | } while (pid2 == -1 && errno == EINTR); | |
e446cec8 IZ |
2212 | errno = errkid; /* Propagate errno from kid */ |
2213 | return Nullfp; | |
2214 | } | |
2215 | } | |
2216 | if (did_pipes) | |
2217 | PerlLIO_close(pp[0]); | |
8ac85365 | 2218 | return PerlIO_fdopen(p[This], mode); |
a687059c | 2219 | } |
7c0587c8 | 2220 | #else |
85ca448a | 2221 | #if defined(atarist) || defined(EPOC) |
7c0587c8 | 2222 | FILE *popen(); |
760ac839 | 2223 | PerlIO * |
864dbfa3 | 2224 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
7c0587c8 | 2225 | { |
45bc9206 | 2226 | PERL_FLUSHALL_FOR_CHILD; |
a1d180c4 NIS |
2227 | /* Call system's popen() to get a FILE *, then import it. |
2228 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2229 | apparently not used | |
2230 | */ | |
2231 | return PerlIO_importFILE(popen(cmd, mode), 0); | |
7c0587c8 | 2232 | } |
2b96b0a5 JH |
2233 | #else |
2234 | #if defined(DJGPP) | |
2235 | FILE *djgpp_popen(); | |
2236 | PerlIO * | |
2237 | Perl_my_popen(pTHX_ char *cmd, char *mode) | |
2238 | { | |
2239 | PERL_FLUSHALL_FOR_CHILD; | |
2240 | /* Call system's popen() to get a FILE *, then import it. | |
2241 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2242 | apparently not used | |
2243 | */ | |
2244 | return PerlIO_importFILE(djgpp_popen(cmd, mode), 0); | |
2245 | } | |
2246 | #endif | |
7c0587c8 LW |
2247 | #endif |
2248 | ||
2249 | #endif /* !DOSISH */ | |
a687059c | 2250 | |
52e18b1f GS |
2251 | /* this is called in parent before the fork() */ |
2252 | void | |
2253 | Perl_atfork_lock(void) | |
2254 | { | |
27da23d5 | 2255 | dVAR; |
3db8f154 | 2256 | #if defined(USE_ITHREADS) |
52e18b1f GS |
2257 | /* locks must be held in locking order (if any) */ |
2258 | # ifdef MYMALLOC | |
2259 | MUTEX_LOCK(&PL_malloc_mutex); | |
2260 | # endif | |
2261 | OP_REFCNT_LOCK; | |
2262 | #endif | |
2263 | } | |
2264 | ||
2265 | /* this is called in both parent and child after the fork() */ | |
2266 | void | |
2267 | Perl_atfork_unlock(void) | |
2268 | { | |
27da23d5 | 2269 | dVAR; |
3db8f154 | 2270 | #if defined(USE_ITHREADS) |
52e18b1f GS |
2271 | /* locks must be released in same order as in atfork_lock() */ |
2272 | # ifdef MYMALLOC | |
2273 | MUTEX_UNLOCK(&PL_malloc_mutex); | |
2274 | # endif | |
2275 | OP_REFCNT_UNLOCK; | |
2276 | #endif | |
2277 | } | |
2278 | ||
2279 | Pid_t | |
2280 | Perl_my_fork(void) | |
2281 | { | |
2282 | #if defined(HAS_FORK) | |
2283 | Pid_t pid; | |
3db8f154 | 2284 | #if defined(USE_ITHREADS) && !defined(HAS_PTHREAD_ATFORK) |
52e18b1f GS |
2285 | atfork_lock(); |
2286 | pid = fork(); | |
2287 | atfork_unlock(); | |
2288 | #else | |
2289 | /* atfork_lock() and atfork_unlock() are installed as pthread_atfork() | |
2290 | * handlers elsewhere in the code */ | |
2291 | pid = fork(); | |
2292 | #endif | |
2293 | return pid; | |
2294 | #else | |
2295 | /* this "canna happen" since nothing should be calling here if !HAS_FORK */ | |
2296 | Perl_croak_nocontext("fork() not available"); | |
b961a566 | 2297 | return 0; |
52e18b1f GS |
2298 | #endif /* HAS_FORK */ |
2299 | } | |
2300 | ||
748a9306 | 2301 | #ifdef DUMP_FDS |
35ff7856 | 2302 | void |
864dbfa3 | 2303 | Perl_dump_fds(pTHX_ char *s) |
ae986130 LW |
2304 | { |
2305 | int fd; | |
c623ac67 | 2306 | Stat_t tmpstatbuf; |
ae986130 | 2307 | |
bf49b057 | 2308 | PerlIO_printf(Perl_debug_log,"%s", s); |
ae986130 | 2309 | for (fd = 0; fd < 32; fd++) { |
6ad3d225 | 2310 | if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0) |
bf49b057 | 2311 | PerlIO_printf(Perl_debug_log," %d",fd); |
ae986130 | 2312 | } |
bf49b057 | 2313 | PerlIO_printf(Perl_debug_log,"\n"); |
27da23d5 | 2314 | return; |
ae986130 | 2315 | } |
35ff7856 | 2316 | #endif /* DUMP_FDS */ |
ae986130 | 2317 | |
fe14fcc3 | 2318 | #ifndef HAS_DUP2 |
fec02dd3 | 2319 | int |
ba106d47 | 2320 | dup2(int oldfd, int newfd) |
a687059c | 2321 | { |
a0d0e21e | 2322 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
fec02dd3 AD |
2323 | if (oldfd == newfd) |
2324 | return oldfd; | |
6ad3d225 | 2325 | PerlLIO_close(newfd); |
fec02dd3 | 2326 | return fcntl(oldfd, F_DUPFD, newfd); |
62b28dd9 | 2327 | #else |
fc36a67e | 2328 | #define DUP2_MAX_FDS 256 |
2329 | int fdtmp[DUP2_MAX_FDS]; | |
79072805 | 2330 | I32 fdx = 0; |
ae986130 LW |
2331 | int fd; |
2332 | ||
fe14fcc3 | 2333 | if (oldfd == newfd) |
fec02dd3 | 2334 | return oldfd; |
6ad3d225 | 2335 | PerlLIO_close(newfd); |
fc36a67e | 2336 | /* good enough for low fd's... */ |
6ad3d225 | 2337 | while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) { |
fc36a67e | 2338 | if (fdx >= DUP2_MAX_FDS) { |
6ad3d225 | 2339 | PerlLIO_close(fd); |
fc36a67e | 2340 | fd = -1; |
2341 | break; | |
2342 | } | |
ae986130 | 2343 | fdtmp[fdx++] = fd; |
fc36a67e | 2344 | } |
ae986130 | 2345 | while (fdx > 0) |
6ad3d225 | 2346 | PerlLIO_close(fdtmp[--fdx]); |
fec02dd3 | 2347 | return fd; |
62b28dd9 | 2348 | #endif |
a687059c LW |
2349 | } |
2350 | #endif | |
2351 | ||
64ca3a65 | 2352 | #ifndef PERL_MICRO |
ff68c719 | 2353 | #ifdef HAS_SIGACTION |
2354 | ||
abea2c45 HS |
2355 | #ifdef MACOS_TRADITIONAL |
2356 | /* We don't want restart behavior on MacOS */ | |
2357 | #undef SA_RESTART | |
2358 | #endif | |
2359 | ||
ff68c719 | 2360 | Sighandler_t |
864dbfa3 | 2361 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2362 | { |
27da23d5 | 2363 | dVAR; |
ff68c719 | 2364 | struct sigaction act, oact; |
2365 | ||
a10b1e10 JH |
2366 | #ifdef USE_ITHREADS |
2367 | /* only "parent" interpreter can diddle signals */ | |
2368 | if (PL_curinterp != aTHX) | |
2369 | return SIG_ERR; | |
2370 | #endif | |
2371 | ||
ff68c719 | 2372 | act.sa_handler = handler; |
2373 | sigemptyset(&act.sa_mask); | |
2374 | act.sa_flags = 0; | |
2375 | #ifdef SA_RESTART | |
4ffa73a3 JH |
2376 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
2377 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
0a8e0eff | 2378 | #endif |
358837b8 | 2379 | #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */ |
85264bed CS |
2380 | if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN) |
2381 | act.sa_flags |= SA_NOCLDWAIT; | |
2382 | #endif | |
ff68c719 | 2383 | if (sigaction(signo, &act, &oact) == -1) |
36477c24 | 2384 | return SIG_ERR; |
ff68c719 | 2385 | else |
36477c24 | 2386 | return oact.sa_handler; |
ff68c719 | 2387 | } |
2388 | ||
2389 | Sighandler_t | |
864dbfa3 | 2390 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2391 | { |
2392 | struct sigaction oact; | |
2393 | ||
2394 | if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1) | |
3aed30dc | 2395 | return SIG_ERR; |
ff68c719 | 2396 | else |
3aed30dc | 2397 | return oact.sa_handler; |
ff68c719 | 2398 | } |
2399 | ||
2400 | int | |
864dbfa3 | 2401 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2402 | { |
27da23d5 | 2403 | dVAR; |
ff68c719 | 2404 | struct sigaction act; |
2405 | ||
a10b1e10 JH |
2406 | #ifdef USE_ITHREADS |
2407 | /* only "parent" interpreter can diddle signals */ | |
2408 | if (PL_curinterp != aTHX) | |
2409 | return -1; | |
2410 | #endif | |
2411 | ||
ff68c719 | 2412 | act.sa_handler = handler; |
2413 | sigemptyset(&act.sa_mask); | |
2414 | act.sa_flags = 0; | |
2415 | #ifdef SA_RESTART | |
4ffa73a3 JH |
2416 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
2417 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
0a8e0eff | 2418 | #endif |
36b5d377 | 2419 | #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */ |
85264bed CS |
2420 | if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN) |
2421 | act.sa_flags |= SA_NOCLDWAIT; | |
2422 | #endif | |
ff68c719 | 2423 | return sigaction(signo, &act, save); |
2424 | } | |
2425 | ||
2426 | int | |
864dbfa3 | 2427 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2428 | { |
27da23d5 | 2429 | dVAR; |
a10b1e10 JH |
2430 | #ifdef USE_ITHREADS |
2431 | /* only "parent" interpreter can diddle signals */ | |
2432 | if (PL_curinterp != aTHX) | |
2433 | return -1; | |
2434 | #endif | |
2435 | ||
ff68c719 | 2436 | return sigaction(signo, save, (struct sigaction *)NULL); |
2437 | } | |
2438 | ||
2439 | #else /* !HAS_SIGACTION */ | |
2440 | ||
2441 | Sighandler_t | |
864dbfa3 | 2442 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2443 | { |
39f1703b | 2444 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2445 | /* only "parent" interpreter can diddle signals */ |
2446 | if (PL_curinterp != aTHX) | |
2447 | return SIG_ERR; | |
2448 | #endif | |
2449 | ||
6ad3d225 | 2450 | return PerlProc_signal(signo, handler); |
ff68c719 | 2451 | } |
2452 | ||
ff68c719 | 2453 | static |
2454 | Signal_t | |
4e35701f | 2455 | sig_trap(int signo) |
ff68c719 | 2456 | { |
27da23d5 JH |
2457 | dVAR; |
2458 | PL_sig_trapped++; | |
ff68c719 | 2459 | } |
2460 | ||
2461 | Sighandler_t | |
864dbfa3 | 2462 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2463 | { |
27da23d5 | 2464 | dVAR; |
ff68c719 | 2465 | Sighandler_t oldsig; |
2466 | ||
39f1703b | 2467 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2468 | /* only "parent" interpreter can diddle signals */ |
2469 | if (PL_curinterp != aTHX) | |
2470 | return SIG_ERR; | |
2471 | #endif | |
2472 | ||
27da23d5 | 2473 | PL_sig_trapped = 0; |
6ad3d225 GS |
2474 | oldsig = PerlProc_signal(signo, sig_trap); |
2475 | PerlProc_signal(signo, oldsig); | |
27da23d5 | 2476 | if (PL_sig_trapped) |
3aed30dc | 2477 | PerlProc_kill(PerlProc_getpid(), signo); |
ff68c719 | 2478 | return oldsig; |
2479 | } | |
2480 | ||
2481 | int | |
864dbfa3 | 2482 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2483 | { |
39f1703b | 2484 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2485 | /* only "parent" interpreter can diddle signals */ |
2486 | if (PL_curinterp != aTHX) | |
2487 | return -1; | |
2488 | #endif | |
6ad3d225 | 2489 | *save = PerlProc_signal(signo, handler); |
ff68c719 | 2490 | return (*save == SIG_ERR) ? -1 : 0; |
2491 | } | |
2492 | ||
2493 | int | |
864dbfa3 | 2494 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2495 | { |
39f1703b | 2496 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2497 | /* only "parent" interpreter can diddle signals */ |
2498 | if (PL_curinterp != aTHX) | |
2499 | return -1; | |
2500 | #endif | |
6ad3d225 | 2501 | return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0; |
ff68c719 | 2502 | } |
2503 | ||
2504 | #endif /* !HAS_SIGACTION */ | |
64ca3a65 | 2505 | #endif /* !PERL_MICRO */ |
ff68c719 | 2506 | |
5f05dabc | 2507 | /* VMS' my_pclose() is in VMS.c; same with OS/2 */ |
cd39f2b6 | 2508 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
79072805 | 2509 | I32 |
864dbfa3 | 2510 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a687059c | 2511 | { |
ff68c719 | 2512 | Sigsave_t hstat, istat, qstat; |
a687059c | 2513 | int status; |
a0d0e21e | 2514 | SV **svp; |
d8a83dd3 JH |
2515 | Pid_t pid; |
2516 | Pid_t pid2; | |
03136e13 | 2517 | bool close_failed; |
b7953727 | 2518 | int saved_errno = 0; |
03136e13 CS |
2519 | #ifdef VMS |
2520 | int saved_vaxc_errno; | |
2521 | #endif | |
22fae026 TM |
2522 | #ifdef WIN32 |
2523 | int saved_win32_errno; | |
2524 | #endif | |
a687059c | 2525 | |
4755096e | 2526 | LOCK_FDPID_MUTEX; |
3280af22 | 2527 | svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE); |
4755096e | 2528 | UNLOCK_FDPID_MUTEX; |
25d92023 | 2529 | pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1; |
a0d0e21e | 2530 | SvREFCNT_dec(*svp); |
3280af22 | 2531 | *svp = &PL_sv_undef; |
ddcf38b7 IZ |
2532 | #ifdef OS2 |
2533 | if (pid == -1) { /* Opened by popen. */ | |
2534 | return my_syspclose(ptr); | |
2535 | } | |
a1d180c4 | 2536 | #endif |
03136e13 CS |
2537 | if ((close_failed = (PerlIO_close(ptr) == EOF))) { |
2538 | saved_errno = errno; | |
2539 | #ifdef VMS | |
2540 | saved_vaxc_errno = vaxc$errno; | |
2541 | #endif | |
22fae026 TM |
2542 | #ifdef WIN32 |
2543 | saved_win32_errno = GetLastError(); | |
2544 | #endif | |
03136e13 | 2545 | } |
7c0587c8 | 2546 | #ifdef UTS |
6ad3d225 | 2547 | if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ |
7c0587c8 | 2548 | #endif |
64ca3a65 | 2549 | #ifndef PERL_MICRO |
ff68c719 | 2550 | rsignal_save(SIGHUP, SIG_IGN, &hstat); |
2551 | rsignal_save(SIGINT, SIG_IGN, &istat); | |
2552 | rsignal_save(SIGQUIT, SIG_IGN, &qstat); | |
64ca3a65 | 2553 | #endif |
748a9306 | 2554 | do { |
1d3434b8 GS |
2555 | pid2 = wait4pid(pid, &status, 0); |
2556 | } while (pid2 == -1 && errno == EINTR); | |
64ca3a65 | 2557 | #ifndef PERL_MICRO |
ff68c719 | 2558 | rsignal_restore(SIGHUP, &hstat); |
2559 | rsignal_restore(SIGINT, &istat); | |
2560 | rsignal_restore(SIGQUIT, &qstat); | |
64ca3a65 | 2561 | #endif |
03136e13 CS |
2562 | if (close_failed) { |
2563 | SETERRNO(saved_errno, saved_vaxc_errno); | |
2564 | return -1; | |
2565 | } | |
1d3434b8 | 2566 | return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status)); |
20188a90 | 2567 | } |
4633a7c4 LW |
2568 | #endif /* !DOSISH */ |
2569 | ||
2986a63f | 2570 | #if (!defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(NETWARE)) && !defined(MACOS_TRADITIONAL) |
79072805 | 2571 | I32 |
d8a83dd3 | 2572 | Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) |
20188a90 | 2573 | { |
27da23d5 | 2574 | I32 result = 0; |
b7953727 JH |
2575 | if (!pid) |
2576 | return -1; | |
2577 | #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) | |
2578 | { | |
cf28e18a | 2579 | char spid[TYPE_CHARS(IV)]; |
20188a90 | 2580 | |
3aed30dc | 2581 | if (pid > 0) { |
27da23d5 | 2582 | SV** svp; |
7b0972df | 2583 | sprintf(spid, "%"IVdf, (IV)pid); |
3aed30dc HS |
2584 | svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE); |
2585 | if (svp && *svp != &PL_sv_undef) { | |
2586 | *statusp = SvIVX(*svp); | |
2587 | (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); | |
2588 | return pid; | |
2589 | } | |
2590 | } | |
2591 | else { | |
2592 | HE *entry; | |
2593 | ||
2594 | hv_iterinit(PL_pidstatus); | |
2595 | if ((entry = hv_iternext(PL_pidstatus))) { | |
27da23d5 JH |
2596 | SV *sv = hv_iterval(PL_pidstatus,entry); |
2597 | ||
3aed30dc | 2598 | pid = atoi(hv_iterkey(entry,(I32*)statusp)); |
3aed30dc HS |
2599 | *statusp = SvIVX(sv); |
2600 | sprintf(spid, "%"IVdf, (IV)pid); | |
2601 | (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); | |
2602 | return pid; | |
2603 | } | |
20188a90 LW |
2604 | } |
2605 | } | |
68a29c53 | 2606 | #endif |
79072805 | 2607 | #ifdef HAS_WAITPID |
367f3c24 IZ |
2608 | # ifdef HAS_WAITPID_RUNTIME |
2609 | if (!HAS_WAITPID_RUNTIME) | |
2610 | goto hard_way; | |
2611 | # endif | |
cddd4526 | 2612 | result = PerlProc_waitpid(pid,statusp,flags); |
dfcfdb64 | 2613 | goto finish; |
367f3c24 IZ |
2614 | #endif |
2615 | #if !defined(HAS_WAITPID) && defined(HAS_WAIT4) | |
cddd4526 | 2616 | result = wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); |
dfcfdb64 | 2617 | goto finish; |
367f3c24 IZ |
2618 | #endif |
2619 | #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) | |
27da23d5 | 2620 | #if defined(HAS_WAITPID) && defined(HAS_WAITPID_RUNTIME) |
367f3c24 | 2621 | hard_way: |
27da23d5 | 2622 | #endif |
a0d0e21e | 2623 | { |
a0d0e21e | 2624 | if (flags) |
cea2e8a9 | 2625 | Perl_croak(aTHX_ "Can't do waitpid with flags"); |
a0d0e21e | 2626 | else { |
76e3520e | 2627 | while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0) |
a0d0e21e LW |
2628 | pidgone(result,*statusp); |
2629 | if (result < 0) | |
2630 | *statusp = -1; | |
2631 | } | |
a687059c LW |
2632 | } |
2633 | #endif | |
27da23d5 | 2634 | #if defined(HAS_WAITPID) || defined(HAS_WAIT4) |
dfcfdb64 | 2635 | finish: |
27da23d5 | 2636 | #endif |
cddd4526 NIS |
2637 | if (result < 0 && errno == EINTR) { |
2638 | PERL_ASYNC_CHECK(); | |
2639 | } | |
2640 | return result; | |
a687059c | 2641 | } |
2986a63f | 2642 | #endif /* !DOSISH || OS2 || WIN32 || NETWARE */ |
a687059c | 2643 | |
7c0587c8 | 2644 | void |
de3bb511 | 2645 | /*SUPPRESS 590*/ |
d8a83dd3 | 2646 | Perl_pidgone(pTHX_ Pid_t pid, int status) |
a687059c | 2647 | { |
79072805 | 2648 | register SV *sv; |
cf28e18a | 2649 | char spid[TYPE_CHARS(IV)]; |
a687059c | 2650 | |
7b0972df | 2651 | sprintf(spid, "%"IVdf, (IV)pid); |
3280af22 | 2652 | sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE); |
a0d0e21e | 2653 | (void)SvUPGRADE(sv,SVt_IV); |
45977657 | 2654 | SvIV_set(sv, status); |
20188a90 | 2655 | return; |
a687059c LW |
2656 | } |
2657 | ||
85ca448a | 2658 | #if defined(atarist) || defined(OS2) || defined(EPOC) |
7c0587c8 | 2659 | int pclose(); |
ddcf38b7 IZ |
2660 | #ifdef HAS_FORK |
2661 | int /* Cannot prototype with I32 | |
2662 | in os2ish.h. */ | |
ba106d47 | 2663 | my_syspclose(PerlIO *ptr) |
ddcf38b7 | 2664 | #else |
79072805 | 2665 | I32 |
864dbfa3 | 2666 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a1d180c4 | 2667 | #endif |
a687059c | 2668 | { |
760ac839 LW |
2669 | /* Needs work for PerlIO ! */ |
2670 | FILE *f = PerlIO_findFILE(ptr); | |
2671 | I32 result = pclose(f); | |
2b96b0a5 JH |
2672 | PerlIO_releaseFILE(ptr,f); |
2673 | return result; | |
2674 | } | |
2675 | #endif | |
2676 | ||
933fea7f | 2677 | #if defined(DJGPP) |
2b96b0a5 JH |
2678 | int djgpp_pclose(); |
2679 | I32 | |
2680 | Perl_my_pclose(pTHX_ PerlIO *ptr) | |
2681 | { | |
2682 | /* Needs work for PerlIO ! */ | |
2683 | FILE *f = PerlIO_findFILE(ptr); | |
2684 | I32 result = djgpp_pclose(f); | |
933fea7f | 2685 | result = (result << 8) & 0xff00; |
760ac839 LW |
2686 | PerlIO_releaseFILE(ptr,f); |
2687 | return result; | |
a687059c | 2688 | } |
7c0587c8 | 2689 | #endif |
9f68db38 LW |
2690 | |
2691 | void | |
864dbfa3 | 2692 | Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count) |
9f68db38 | 2693 | { |
79072805 | 2694 | register I32 todo; |
08105a92 | 2695 | register const char *frombase = from; |
9f68db38 LW |
2696 | |
2697 | if (len == 1) { | |
08105a92 | 2698 | register const char c = *from; |
9f68db38 | 2699 | while (count-- > 0) |
5926133d | 2700 | *to++ = c; |
9f68db38 LW |
2701 | return; |
2702 | } | |
2703 | while (count-- > 0) { | |
2704 | for (todo = len; todo > 0; todo--) { | |
2705 | *to++ = *from++; | |
2706 | } | |
2707 | from = frombase; | |
2708 | } | |
2709 | } | |
0f85fab0 | 2710 | |
fe14fcc3 | 2711 | #ifndef HAS_RENAME |
79072805 | 2712 | I32 |
864dbfa3 | 2713 | Perl_same_dirent(pTHX_ char *a, char *b) |
62b28dd9 | 2714 | { |
93a17b20 LW |
2715 | char *fa = strrchr(a,'/'); |
2716 | char *fb = strrchr(b,'/'); | |
c623ac67 GS |
2717 | Stat_t tmpstatbuf1; |
2718 | Stat_t tmpstatbuf2; | |
46fc3d4c | 2719 | SV *tmpsv = sv_newmortal(); |
62b28dd9 LW |
2720 | |
2721 | if (fa) | |
2722 | fa++; | |
2723 | else | |
2724 | fa = a; | |
2725 | if (fb) | |
2726 | fb++; | |
2727 | else | |
2728 | fb = b; | |
2729 | if (strNE(a,b)) | |
2730 | return FALSE; | |
2731 | if (fa == a) | |
46fc3d4c | 2732 | sv_setpv(tmpsv, "."); |
62b28dd9 | 2733 | else |
46fc3d4c | 2734 | sv_setpvn(tmpsv, a, fa - a); |
c6ed36e1 | 2735 | if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0) |
62b28dd9 LW |
2736 | return FALSE; |
2737 | if (fb == b) | |
46fc3d4c | 2738 | sv_setpv(tmpsv, "."); |
62b28dd9 | 2739 | else |
46fc3d4c | 2740 | sv_setpvn(tmpsv, b, fb - b); |
c6ed36e1 | 2741 | if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0) |
62b28dd9 LW |
2742 | return FALSE; |
2743 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
2744 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
2745 | } | |
fe14fcc3 LW |
2746 | #endif /* !HAS_RENAME */ |
2747 | ||
491527d0 | 2748 | char* |
e1ec3a88 | 2749 | Perl_find_script(pTHX_ const char *scriptname, bool dosearch, const char **search_ext, I32 flags) |
491527d0 | 2750 | { |
e1ec3a88 | 2751 | const char *xfound = Nullch; |
491527d0 | 2752 | char *xfailed = Nullch; |
0f31cffe | 2753 | char tmpbuf[MAXPATHLEN]; |
491527d0 | 2754 | register char *s; |
5f74f29c | 2755 | I32 len = 0; |
491527d0 GS |
2756 | int retval; |
2757 | #if defined(DOSISH) && !defined(OS2) && !defined(atarist) | |
2758 | # define SEARCH_EXTS ".bat", ".cmd", NULL | |
2759 | # define MAX_EXT_LEN 4 | |
2760 | #endif | |
2761 | #ifdef OS2 | |
2762 | # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL | |
2763 | # define MAX_EXT_LEN 4 | |
2764 | #endif | |
2765 | #ifdef VMS | |
2766 | # define SEARCH_EXTS ".pl", ".com", NULL | |
2767 | # define MAX_EXT_LEN 4 | |
2768 | #endif | |
2769 | /* additional extensions to try in each dir if scriptname not found */ | |
2770 | #ifdef SEARCH_EXTS | |
e1ec3a88 AL |
2771 | const char *exts[] = { SEARCH_EXTS }; |
2772 | const char **ext = search_ext ? search_ext : exts; | |
491527d0 | 2773 | int extidx = 0, i = 0; |
e1ec3a88 | 2774 | const char *curext = Nullch; |
491527d0 | 2775 | #else |
73d840c0 | 2776 | (void)search_ext; |
491527d0 GS |
2777 | # define MAX_EXT_LEN 0 |
2778 | #endif | |
2779 | ||
2780 | /* | |
2781 | * If dosearch is true and if scriptname does not contain path | |
2782 | * delimiters, search the PATH for scriptname. | |
2783 | * | |
2784 | * If SEARCH_EXTS is also defined, will look for each | |
2785 | * scriptname{SEARCH_EXTS} whenever scriptname is not found | |
2786 | * while searching the PATH. | |
2787 | * | |
2788 | * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search | |
2789 | * proceeds as follows: | |
2790 | * If DOSISH or VMSISH: | |
2791 | * + look for ./scriptname{,.foo,.bar} | |
2792 | * + search the PATH for scriptname{,.foo,.bar} | |
2793 | * | |
2794 | * If !DOSISH: | |
2795 | * + look *only* in the PATH for scriptname{,.foo,.bar} (note | |
2796 | * this will not look in '.' if it's not in the PATH) | |
2797 | */ | |
84486fc6 | 2798 | tmpbuf[0] = '\0'; |
491527d0 GS |
2799 | |
2800 | #ifdef VMS | |
2801 | # ifdef ALWAYS_DEFTYPES | |
2802 | len = strlen(scriptname); | |
2803 | if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { | |
2804 | int hasdir, idx = 0, deftypes = 1; | |
2805 | bool seen_dot = 1; | |
2806 | ||
2807 | hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ; | |
2808 | # else | |
2809 | if (dosearch) { | |
2810 | int hasdir, idx = 0, deftypes = 1; | |
2811 | bool seen_dot = 1; | |
2812 | ||
2813 | hasdir = (strpbrk(scriptname,":[</") != Nullch) ; | |
2814 | # endif | |
2815 | /* The first time through, just add SEARCH_EXTS to whatever we | |
2816 | * already have, so we can check for default file types. */ | |
2817 | while (deftypes || | |
84486fc6 | 2818 | (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) ) |
491527d0 GS |
2819 | { |
2820 | if (deftypes) { | |
2821 | deftypes = 0; | |
84486fc6 | 2822 | *tmpbuf = '\0'; |
491527d0 | 2823 | } |
84486fc6 GS |
2824 | if ((strlen(tmpbuf) + strlen(scriptname) |
2825 | + MAX_EXT_LEN) >= sizeof tmpbuf) | |
491527d0 | 2826 | continue; /* don't search dir with too-long name */ |
84486fc6 | 2827 | strcat(tmpbuf, scriptname); |
491527d0 GS |
2828 | #else /* !VMS */ |
2829 | ||
2830 | #ifdef DOSISH | |
2831 | if (strEQ(scriptname, "-")) | |
2832 | dosearch = 0; | |
2833 | if (dosearch) { /* Look in '.' first. */ | |
fe2774ed | 2834 | const char *cur = scriptname; |
491527d0 GS |
2835 | #ifdef SEARCH_EXTS |
2836 | if ((curext = strrchr(scriptname,'.'))) /* possible current ext */ | |
2837 | while (ext[i]) | |
2838 | if (strEQ(ext[i++],curext)) { | |
2839 | extidx = -1; /* already has an ext */ | |
2840 | break; | |
2841 | } | |
2842 | do { | |
2843 | #endif | |
2844 | DEBUG_p(PerlIO_printf(Perl_debug_log, | |
2845 | "Looking for %s\n",cur)); | |
017f25f1 IZ |
2846 | if (PerlLIO_stat(cur,&PL_statbuf) >= 0 |
2847 | && !S_ISDIR(PL_statbuf.st_mode)) { | |
491527d0 GS |
2848 | dosearch = 0; |
2849 | scriptname = cur; | |
2850 | #ifdef SEARCH_EXTS | |
2851 | break; | |
2852 | #endif | |
2853 | } | |
2854 | #ifdef SEARCH_EXTS | |
2855 | if (cur == scriptname) { | |
2856 | len = strlen(scriptname); | |
84486fc6 | 2857 | if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf)) |
491527d0 | 2858 | break; |
84486fc6 | 2859 | cur = strcpy(tmpbuf, scriptname); |
491527d0 GS |
2860 | } |
2861 | } while (extidx >= 0 && ext[extidx] /* try an extension? */ | |
84486fc6 | 2862 | && strcpy(tmpbuf+len, ext[extidx++])); |
491527d0 GS |
2863 | #endif |
2864 | } | |
2865 | #endif | |
2866 | ||
cd39f2b6 JH |
2867 | #ifdef MACOS_TRADITIONAL |
2868 | if (dosearch && !strchr(scriptname, ':') && | |
2869 | (s = PerlEnv_getenv("Commands"))) | |
2870 | #else | |
491527d0 GS |
2871 | if (dosearch && !strchr(scriptname, '/') |
2872 | #ifdef DOSISH | |
2873 | && !strchr(scriptname, '\\') | |
2874 | #endif | |
cd39f2b6 JH |
2875 | && (s = PerlEnv_getenv("PATH"))) |
2876 | #endif | |
2877 | { | |
491527d0 | 2878 | bool seen_dot = 0; |
92f0c265 | 2879 | |
3280af22 NIS |
2880 | PL_bufend = s + strlen(s); |
2881 | while (s < PL_bufend) { | |
cd39f2b6 JH |
2882 | #ifdef MACOS_TRADITIONAL |
2883 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend, | |
2884 | ',', | |
2885 | &len); | |
2886 | #else | |
491527d0 GS |
2887 | #if defined(atarist) || defined(DOSISH) |
2888 | for (len = 0; *s | |
2889 | # ifdef atarist | |
2890 | && *s != ',' | |
2891 | # endif | |
2892 | && *s != ';'; len++, s++) { | |
84486fc6 GS |
2893 | if (len < sizeof tmpbuf) |
2894 | tmpbuf[len] = *s; | |
491527d0 | 2895 | } |
84486fc6 GS |
2896 | if (len < sizeof tmpbuf) |
2897 | tmpbuf[len] = '\0'; | |
491527d0 | 2898 | #else /* ! (atarist || DOSISH) */ |
3280af22 | 2899 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend, |
491527d0 GS |
2900 | ':', |
2901 | &len); | |
2902 | #endif /* ! (atarist || DOSISH) */ | |
cd39f2b6 | 2903 | #endif /* MACOS_TRADITIONAL */ |
3280af22 | 2904 | if (s < PL_bufend) |
491527d0 | 2905 | s++; |
84486fc6 | 2906 | if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf) |
491527d0 | 2907 | continue; /* don't search dir with too-long name */ |
cd39f2b6 JH |
2908 | #ifdef MACOS_TRADITIONAL |
2909 | if (len && tmpbuf[len - 1] != ':') | |
2910 | tmpbuf[len++] = ':'; | |
2911 | #else | |
491527d0 | 2912 | if (len |
61ae2fbf | 2913 | #if defined(atarist) || defined(__MINT__) || defined(DOSISH) |
84486fc6 GS |
2914 | && tmpbuf[len - 1] != '/' |
2915 | && tmpbuf[len - 1] != '\\' | |
491527d0 GS |
2916 | #endif |
2917 | ) | |
84486fc6 GS |
2918 | tmpbuf[len++] = '/'; |
2919 | if (len == 2 && tmpbuf[0] == '.') | |
491527d0 | 2920 | seen_dot = 1; |
cd39f2b6 | 2921 | #endif |
84486fc6 | 2922 | (void)strcpy(tmpbuf + len, scriptname); |
491527d0 GS |
2923 | #endif /* !VMS */ |
2924 | ||
2925 | #ifdef SEARCH_EXTS | |
84486fc6 | 2926 | len = strlen(tmpbuf); |
491527d0 GS |
2927 | if (extidx > 0) /* reset after previous loop */ |
2928 | extidx = 0; | |
2929 | do { | |
2930 | #endif | |
84486fc6 | 2931 | DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf)); |
3280af22 | 2932 | retval = PerlLIO_stat(tmpbuf,&PL_statbuf); |
017f25f1 IZ |
2933 | if (S_ISDIR(PL_statbuf.st_mode)) { |
2934 | retval = -1; | |
2935 | } | |
491527d0 GS |
2936 | #ifdef SEARCH_EXTS |
2937 | } while ( retval < 0 /* not there */ | |
2938 | && extidx>=0 && ext[extidx] /* try an extension? */ | |
84486fc6 | 2939 | && strcpy(tmpbuf+len, ext[extidx++]) |
491527d0 GS |
2940 | ); |
2941 | #endif | |
2942 | if (retval < 0) | |
2943 | continue; | |
3280af22 NIS |
2944 | if (S_ISREG(PL_statbuf.st_mode) |
2945 | && cando(S_IRUSR,TRUE,&PL_statbuf) | |
73811745 | 2946 | #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL) |
3280af22 | 2947 | && cando(S_IXUSR,TRUE,&PL_statbuf) |
491527d0 GS |
2948 | #endif |
2949 | ) | |
2950 | { | |
3aed30dc | 2951 | xfound = tmpbuf; /* bingo! */ |
491527d0 GS |
2952 | break; |
2953 | } | |
2954 | if (!xfailed) | |
84486fc6 | 2955 | xfailed = savepv(tmpbuf); |
491527d0 GS |
2956 | } |
2957 | #ifndef DOSISH | |
017f25f1 | 2958 | if (!xfound && !seen_dot && !xfailed && |
a1d180c4 | 2959 | (PerlLIO_stat(scriptname,&PL_statbuf) < 0 |
017f25f1 | 2960 | || S_ISDIR(PL_statbuf.st_mode))) |
491527d0 GS |
2961 | #endif |
2962 | seen_dot = 1; /* Disable message. */ | |
9ccb31f9 GS |
2963 | if (!xfound) { |
2964 | if (flags & 1) { /* do or die? */ | |
3aed30dc | 2965 | Perl_croak(aTHX_ "Can't %s %s%s%s", |
9ccb31f9 GS |
2966 | (xfailed ? "execute" : "find"), |
2967 | (xfailed ? xfailed : scriptname), | |
2968 | (xfailed ? "" : " on PATH"), | |
2969 | (xfailed || seen_dot) ? "" : ", '.' not in PATH"); | |
2970 | } | |
2971 | scriptname = Nullch; | |
2972 | } | |
491527d0 GS |
2973 | if (xfailed) |
2974 | Safefree(xfailed); | |
2975 | scriptname = xfound; | |
2976 | } | |
9ccb31f9 | 2977 | return (scriptname ? savepv(scriptname) : Nullch); |
491527d0 GS |
2978 | } |
2979 | ||
ba869deb GS |
2980 | #ifndef PERL_GET_CONTEXT_DEFINED |
2981 | ||
2982 | void * | |
2983 | Perl_get_context(void) | |
2984 | { | |
27da23d5 | 2985 | dVAR; |
3db8f154 | 2986 | #if defined(USE_ITHREADS) |
ba869deb GS |
2987 | # ifdef OLD_PTHREADS_API |
2988 | pthread_addr_t t; | |
2989 | if (pthread_getspecific(PL_thr_key, &t)) | |
2990 | Perl_croak_nocontext("panic: pthread_getspecific"); | |
2991 | return (void*)t; | |
2992 | # else | |
bce813aa | 2993 | # ifdef I_MACH_CTHREADS |
8b8b35ab | 2994 | return (void*)cthread_data(cthread_self()); |
bce813aa | 2995 | # else |
8b8b35ab JH |
2996 | return (void*)PTHREAD_GETSPECIFIC(PL_thr_key); |
2997 | # endif | |
c44d3fdb | 2998 | # endif |
ba869deb GS |
2999 | #else |
3000 | return (void*)NULL; | |
3001 | #endif | |
3002 | } | |
3003 | ||
3004 | void | |
3005 | Perl_set_context(void *t) | |
3006 | { | |
27da23d5 | 3007 | dVAR; |
3db8f154 | 3008 | #if defined(USE_ITHREADS) |
c44d3fdb GS |
3009 | # ifdef I_MACH_CTHREADS |
3010 | cthread_set_data(cthread_self(), t); | |
3011 | # else | |
ba869deb GS |
3012 | if (pthread_setspecific(PL_thr_key, t)) |
3013 | Perl_croak_nocontext("panic: pthread_setspecific"); | |
c44d3fdb | 3014 | # endif |
ba869deb GS |
3015 | #endif |
3016 | } | |
3017 | ||
3018 | #endif /* !PERL_GET_CONTEXT_DEFINED */ | |
491527d0 | 3019 | |
27da23d5 | 3020 | #if defined(PERL_GLOBAL_STRUCT) && !defined(PERL_GLOBAL_STRUCT_PRIVATE) |
22239a37 | 3021 | struct perl_vars * |
864dbfa3 | 3022 | Perl_GetVars(pTHX) |
22239a37 | 3023 | { |
533c011a | 3024 | return &PL_Vars; |
22239a37 | 3025 | } |
31fb1209 NIS |
3026 | #endif |
3027 | ||
1cb0ed9b | 3028 | char ** |
864dbfa3 | 3029 | Perl_get_op_names(pTHX) |
31fb1209 | 3030 | { |
27da23d5 | 3031 | return (char **)PL_op_name; |
31fb1209 NIS |
3032 | } |
3033 | ||
1cb0ed9b | 3034 | char ** |
864dbfa3 | 3035 | Perl_get_op_descs(pTHX) |
31fb1209 | 3036 | { |
27da23d5 | 3037 | return (char **)PL_op_desc; |
31fb1209 | 3038 | } |
9e6b2b00 | 3039 | |
e1ec3a88 | 3040 | const char * |
864dbfa3 | 3041 | Perl_get_no_modify(pTHX) |
9e6b2b00 | 3042 | { |
e1ec3a88 | 3043 | return PL_no_modify; |
9e6b2b00 GS |
3044 | } |
3045 | ||
3046 | U32 * | |
864dbfa3 | 3047 | Perl_get_opargs(pTHX) |
9e6b2b00 | 3048 | { |
27da23d5 | 3049 | return (U32 *)PL_opargs; |
9e6b2b00 | 3050 | } |
51aa15f3 | 3051 | |
0cb96387 GS |
3052 | PPADDR_t* |
3053 | Perl_get_ppaddr(pTHX) | |
3054 | { | |
27da23d5 | 3055 | dVAR; |
12ae5dfc | 3056 | return (PPADDR_t*)PL_ppaddr; |
0cb96387 GS |
3057 | } |
3058 | ||
a6c40364 GS |
3059 | #ifndef HAS_GETENV_LEN |
3060 | char * | |
bf4acbe4 | 3061 | Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len) |
a6c40364 GS |
3062 | { |
3063 | char *env_trans = PerlEnv_getenv(env_elem); | |
3064 | if (env_trans) | |
3065 | *len = strlen(env_trans); | |
3066 | return env_trans; | |
f675dbe5 CB |
3067 | } |
3068 | #endif | |
3069 | ||
dc9e4912 GS |
3070 | |
3071 | MGVTBL* | |
864dbfa3 | 3072 | Perl_get_vtbl(pTHX_ int vtbl_id) |
dc9e4912 | 3073 | { |
27da23d5 | 3074 | const MGVTBL* result = Null(MGVTBL*); |
dc9e4912 GS |
3075 | |
3076 | switch(vtbl_id) { | |
3077 | case want_vtbl_sv: | |
3078 | result = &PL_vtbl_sv; | |
3079 | break; | |
3080 | case want_vtbl_env: | |
3081 | result = &PL_vtbl_env; | |
3082 | break; | |
3083 | case want_vtbl_envelem: | |
3084 | result = &PL_vtbl_envelem; | |
3085 | break; | |
3086 | case want_vtbl_sig: | |
3087 | result = &PL_vtbl_sig; | |
3088 | break; | |
3089 | case want_vtbl_sigelem: | |
3090 | result = &PL_vtbl_sigelem; | |
3091 | break; | |
3092 | case want_vtbl_pack: | |
3093 | result = &PL_vtbl_pack; | |
3094 | break; | |
3095 | case want_vtbl_packelem: | |
3096 | result = &PL_vtbl_packelem; | |
3097 | break; | |
3098 | case want_vtbl_dbline: | |
3099 | result = &PL_vtbl_dbline; | |
3100 | break; | |
3101 | case want_vtbl_isa: | |
3102 | result = &PL_vtbl_isa; | |
3103 | break; | |
3104 | case want_vtbl_isaelem: | |
3105 | result = &PL_vtbl_isaelem; | |
3106 | break; | |
3107 | case want_vtbl_arylen: | |
3108 | result = &PL_vtbl_arylen; | |
3109 | break; | |
3110 | case want_vtbl_glob: | |
3111 | result = &PL_vtbl_glob; | |
3112 | break; | |
3113 | case want_vtbl_mglob: | |
3114 | result = &PL_vtbl_mglob; | |
3115 | break; | |
3116 | case want_vtbl_nkeys: | |
3117 | result = &PL_vtbl_nkeys; | |
3118 | break; | |
3119 | case want_vtbl_taint: | |
3120 | result = &PL_vtbl_taint; | |
3121 | break; | |
3122 | case want_vtbl_substr: | |
3123 | result = &PL_vtbl_substr; | |
3124 | break; | |
3125 | case want_vtbl_vec: | |
3126 | result = &PL_vtbl_vec; | |
3127 | break; | |
3128 | case want_vtbl_pos: | |
3129 | result = &PL_vtbl_pos; | |
3130 | break; | |
3131 | case want_vtbl_bm: | |
3132 | result = &PL_vtbl_bm; | |
3133 | break; | |
3134 | case want_vtbl_fm: | |
3135 | result = &PL_vtbl_fm; | |
3136 | break; | |
3137 | case want_vtbl_uvar: | |
3138 | result = &PL_vtbl_uvar; | |
3139 | break; | |
dc9e4912 GS |
3140 | case want_vtbl_defelem: |
3141 | result = &PL_vtbl_defelem; | |
3142 | break; | |
3143 | case want_vtbl_regexp: | |
3144 | result = &PL_vtbl_regexp; | |
3145 | break; | |
3146 | case want_vtbl_regdata: | |
3147 | result = &PL_vtbl_regdata; | |
3148 | break; | |
3149 | case want_vtbl_regdatum: | |
3150 | result = &PL_vtbl_regdatum; | |
3151 | break; | |
3c90161d | 3152 | #ifdef USE_LOCALE_COLLATE |
dc9e4912 GS |
3153 | case want_vtbl_collxfrm: |
3154 | result = &PL_vtbl_collxfrm; | |
3155 | break; | |
3c90161d | 3156 | #endif |
dc9e4912 GS |
3157 | case want_vtbl_amagic: |
3158 | result = &PL_vtbl_amagic; | |
3159 | break; | |
3160 | case want_vtbl_amagicelem: | |
3161 | result = &PL_vtbl_amagicelem; | |
3162 | break; | |
810b8aa5 GS |
3163 | case want_vtbl_backref: |
3164 | result = &PL_vtbl_backref; | |
3165 | break; | |
7e8c5dac HS |
3166 | case want_vtbl_utf8: |
3167 | result = &PL_vtbl_utf8; | |
3168 | break; | |
dc9e4912 | 3169 | } |
27da23d5 | 3170 | return (MGVTBL*)result; |
dc9e4912 GS |
3171 | } |
3172 | ||
767df6a1 | 3173 | I32 |
864dbfa3 | 3174 | Perl_my_fflush_all(pTHX) |
767df6a1 | 3175 | { |
f800e14d | 3176 | #if defined(USE_PERLIO) || defined(FFLUSH_NULL) || defined(USE_SFIO) |
ce720889 | 3177 | return PerlIO_flush(NULL); |
767df6a1 | 3178 | #else |
8fbdfb7c | 3179 | # if defined(HAS__FWALK) |
f13a2bc0 | 3180 | extern int fflush(FILE *); |
74cac757 JH |
3181 | /* undocumented, unprototyped, but very useful BSDism */ |
3182 | extern void _fwalk(int (*)(FILE *)); | |
8fbdfb7c | 3183 | _fwalk(&fflush); |
74cac757 | 3184 | return 0; |
8fa7f367 | 3185 | # else |
8fbdfb7c | 3186 | # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY) |
8fa7f367 | 3187 | long open_max = -1; |
8fbdfb7c | 3188 | # ifdef PERL_FFLUSH_ALL_FOPEN_MAX |
d2201af2 | 3189 | open_max = PERL_FFLUSH_ALL_FOPEN_MAX; |
8fbdfb7c | 3190 | # else |
8fa7f367 | 3191 | # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX) |
767df6a1 | 3192 | open_max = sysconf(_SC_OPEN_MAX); |
8fa7f367 JH |
3193 | # else |
3194 | # ifdef FOPEN_MAX | |
74cac757 | 3195 | open_max = FOPEN_MAX; |
8fa7f367 JH |
3196 | # else |
3197 | # ifdef OPEN_MAX | |
74cac757 | 3198 | open_max = OPEN_MAX; |
8fa7f367 JH |
3199 | # else |
3200 | # ifdef _NFILE | |
d2201af2 | 3201 | open_max = _NFILE; |
8fa7f367 JH |
3202 | # endif |
3203 | # endif | |
74cac757 | 3204 | # endif |
767df6a1 JH |
3205 | # endif |
3206 | # endif | |
767df6a1 JH |
3207 | if (open_max > 0) { |
3208 | long i; | |
3209 | for (i = 0; i < open_max; i++) | |
d2201af2 AD |
3210 | if (STDIO_STREAM_ARRAY[i]._file >= 0 && |
3211 | STDIO_STREAM_ARRAY[i]._file < open_max && | |
3212 | STDIO_STREAM_ARRAY[i]._flag) | |
3213 | PerlIO_flush(&STDIO_STREAM_ARRAY[i]); | |
767df6a1 JH |
3214 | return 0; |
3215 | } | |
8fbdfb7c | 3216 | # endif |
93189314 | 3217 | SETERRNO(EBADF,RMS_IFI); |
767df6a1 | 3218 | return EOF; |
74cac757 | 3219 | # endif |
767df6a1 JH |
3220 | #endif |
3221 | } | |
097ee67d | 3222 | |
69282e91 | 3223 | void |
e1ec3a88 | 3224 | Perl_report_evil_fh(pTHX_ const GV *gv, const IO *io, I32 op) |
bc37a18f | 3225 | { |
e1ec3a88 | 3226 | const char *func = |
66fc2fa5 JH |
3227 | op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */ |
3228 | op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */ | |
bc37a18f | 3229 | PL_op_desc[op]; |
e1ec3a88 AL |
3230 | const char *pars = OP_IS_FILETEST(op) ? "" : "()"; |
3231 | const char *type = OP_IS_SOCKET(op) | |
3aed30dc HS |
3232 | || (gv && io && IoTYPE(io) == IoTYPE_SOCKET) |
3233 | ? "socket" : "filehandle"; | |
e1ec3a88 | 3234 | const char *name = NULL; |
bc37a18f | 3235 | |
66fc2fa5 | 3236 | if (gv && isGV(gv)) { |
f62cb720 | 3237 | name = GvENAME(gv); |
66fc2fa5 JH |
3238 | } |
3239 | ||
4c80c0b2 | 3240 | if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) { |
3aed30dc | 3241 | if (ckWARN(WARN_IO)) { |
fd322ea4 | 3242 | const char *direction = (op == OP_phoney_INPUT_ONLY) ? "in" : "out"; |
3aed30dc HS |
3243 | if (name && *name) |
3244 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
3245 | "Filehandle %s opened only for %sput", | |
fd322ea4 | 3246 | name, direction); |
3aed30dc HS |
3247 | else |
3248 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
fd322ea4 | 3249 | "Filehandle opened only for %sput", direction); |
3aed30dc | 3250 | } |
2dd78f96 JH |
3251 | } |
3252 | else { | |
e1ec3a88 | 3253 | const char *vile; |
3aed30dc HS |
3254 | I32 warn_type; |
3255 | ||
3256 | if (gv && io && IoTYPE(io) == IoTYPE_CLOSED) { | |
3257 | vile = "closed"; | |
3258 | warn_type = WARN_CLOSED; | |
3259 | } | |
3260 | else { | |
3261 | vile = "unopened"; | |
3262 | warn_type = WARN_UNOPENED; | |
3263 | } | |
3264 | ||
3265 | if (ckWARN(warn_type)) { | |
3266 | if (name && *name) { | |
3267 | Perl_warner(aTHX_ packWARN(warn_type), | |
3268 | "%s%s on %s %s %s", func, pars, vile, type, name); | |
3269 | if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) | |
3270 | Perl_warner( | |
3271 | aTHX_ packWARN(warn_type), | |
3272 | "\t(Are you trying to call %s%s on dirhandle %s?)\n", | |
3273 | func, pars, name | |
3274 | ); | |
3275 | } | |
3276 | else { | |
3277 | Perl_warner(aTHX_ packWARN(warn_type), | |
3278 | "%s%s on %s %s", func, pars, vile, type); | |
3279 | if (gv && io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) | |
3280 | Perl_warner( | |
3281 | aTHX_ packWARN(warn_type), | |
3282 | "\t(Are you trying to call %s%s on dirhandle?)\n", | |
3283 | func, pars | |
3284 | ); | |
3285 | } | |
3286 | } | |
bc37a18f | 3287 | } |
69282e91 | 3288 | } |
a926ef6b JH |
3289 | |
3290 | #ifdef EBCDIC | |
cbebf344 JH |
3291 | /* in ASCII order, not that it matters */ |
3292 | static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; | |
3293 | ||
a926ef6b JH |
3294 | int |
3295 | Perl_ebcdic_control(pTHX_ int ch) | |
3296 | { | |
3aed30dc | 3297 | if (ch > 'a') { |
e1ec3a88 | 3298 | const char *ctlp; |
3aed30dc HS |
3299 | |
3300 | if (islower(ch)) | |
3301 | ch = toupper(ch); | |
3302 | ||
3303 | if ((ctlp = strchr(controllablechars, ch)) == 0) { | |
3304 | Perl_die(aTHX_ "unrecognised control character '%c'\n", ch); | |
a926ef6b | 3305 | } |
3aed30dc HS |
3306 | |
3307 | if (ctlp == controllablechars) | |
3308 | return('\177'); /* DEL */ | |
3309 | else | |
3310 | return((unsigned char)(ctlp - controllablechars - 1)); | |
3311 | } else { /* Want uncontrol */ | |
3312 | if (ch == '\177' || ch == -1) | |
3313 | return('?'); | |
3314 | else if (ch == '\157') | |
3315 | return('\177'); | |
3316 | else if (ch == '\174') | |
3317 | return('\000'); | |
3318 | else if (ch == '^') /* '\137' in 1047, '\260' in 819 */ | |
3319 | return('\036'); | |
3320 | else if (ch == '\155') | |
3321 | return('\037'); | |
3322 | else if (0 < ch && ch < (sizeof(controllablechars) - 1)) | |
3323 | return(controllablechars[ch+1]); | |
3324 | else | |
3325 | Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF); | |
3326 | } | |
a926ef6b JH |
3327 | } |
3328 | #endif | |
e72cf795 | 3329 | |
f6adc668 | 3330 | /* To workaround core dumps from the uninitialised tm_zone we get the |
e72cf795 JH |
3331 | * system to give us a reasonable struct to copy. This fix means that |
3332 | * strftime uses the tm_zone and tm_gmtoff values returned by | |
3333 | * localtime(time()). That should give the desired result most of the | |
3334 | * time. But probably not always! | |
3335 | * | |
f6adc668 JH |
3336 | * This does not address tzname aspects of NETaa14816. |
3337 | * | |
e72cf795 | 3338 | */ |
f6adc668 | 3339 | |
e72cf795 JH |
3340 | #ifdef HAS_GNULIBC |
3341 | # ifndef STRUCT_TM_HASZONE | |
3342 | # define STRUCT_TM_HASZONE | |
3343 | # endif | |
3344 | #endif | |
3345 | ||
f6adc668 JH |
3346 | #ifdef STRUCT_TM_HASZONE /* Backward compat */ |
3347 | # ifndef HAS_TM_TM_ZONE | |
3348 | # define HAS_TM_TM_ZONE | |
3349 | # endif | |
3350 | #endif | |
3351 | ||
e72cf795 | 3352 | void |
f1208910 | 3353 | Perl_init_tm(pTHX_ struct tm *ptm) /* see mktime, strftime and asctime */ |
e72cf795 | 3354 | { |
f6adc668 | 3355 | #ifdef HAS_TM_TM_ZONE |
e72cf795 | 3356 | Time_t now; |
82c57498 | 3357 | struct tm* my_tm; |
e72cf795 | 3358 | (void)time(&now); |
82c57498 | 3359 | my_tm = localtime(&now); |
ca46b8ee SP |
3360 | if (my_tm) |
3361 | Copy(my_tm, ptm, 1, struct tm); | |
e72cf795 JH |
3362 | #endif |
3363 | } | |
3364 | ||
3365 | /* | |
3366 | * mini_mktime - normalise struct tm values without the localtime() | |
3367 | * semantics (and overhead) of mktime(). | |
3368 | */ | |
3369 | void | |
f1208910 | 3370 | Perl_mini_mktime(pTHX_ struct tm *ptm) |
e72cf795 JH |
3371 | { |
3372 | int yearday; | |
3373 | int secs; | |
3374 | int month, mday, year, jday; | |
3375 | int odd_cent, odd_year; | |
3376 | ||
3377 | #define DAYS_PER_YEAR 365 | |
3378 | #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1) | |
3379 | #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1) | |
3380 | #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1) | |
3381 | #define SECS_PER_HOUR (60*60) | |
3382 | #define SECS_PER_DAY (24*SECS_PER_HOUR) | |
3383 | /* parentheses deliberately absent on these two, otherwise they don't work */ | |
3384 | #define MONTH_TO_DAYS 153/5 | |
3385 | #define DAYS_TO_MONTH 5/153 | |
3386 | /* offset to bias by March (month 4) 1st between month/mday & year finding */ | |
3387 | #define YEAR_ADJUST (4*MONTH_TO_DAYS+1) | |
3388 | /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */ | |
3389 | #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */ | |
3390 | ||
3391 | /* | |
3392 | * Year/day algorithm notes: | |
3393 | * | |
3394 | * With a suitable offset for numeric value of the month, one can find | |
3395 | * an offset into the year by considering months to have 30.6 (153/5) days, | |
3396 | * using integer arithmetic (i.e., with truncation). To avoid too much | |
3397 | * messing about with leap days, we consider January and February to be | |
3398 | * the 13th and 14th month of the previous year. After that transformation, | |
3399 | * we need the month index we use to be high by 1 from 'normal human' usage, | |
3400 | * so the month index values we use run from 4 through 15. | |
3401 | * | |
3402 | * Given that, and the rules for the Gregorian calendar (leap years are those | |
3403 | * divisible by 4 unless also divisible by 100, when they must be divisible | |
3404 | * by 400 instead), we can simply calculate the number of days since some | |
3405 | * arbitrary 'beginning of time' by futzing with the (adjusted) year number, | |
3406 | * the days we derive from our month index, and adding in the day of the | |
3407 | * month. The value used here is not adjusted for the actual origin which | |
3408 | * it normally would use (1 January A.D. 1), since we're not exposing it. | |
3409 | * We're only building the value so we can turn around and get the | |
3410 | * normalised values for the year, month, day-of-month, and day-of-year. | |
3411 | * | |
3412 | * For going backward, we need to bias the value we're using so that we find | |
3413 | * the right year value. (Basically, we don't want the contribution of | |
3414 | * March 1st to the number to apply while deriving the year). Having done | |
3415 | * that, we 'count up' the contribution to the year number by accounting for | |
3416 | * full quadracenturies (400-year periods) with their extra leap days, plus | |
3417 | * the contribution from full centuries (to avoid counting in the lost leap | |
3418 | * days), plus the contribution from full quad-years (to count in the normal | |
3419 | * leap days), plus the leftover contribution from any non-leap years. | |
3420 | * At this point, if we were working with an actual leap day, we'll have 0 | |
3421 | * days left over. This is also true for March 1st, however. So, we have | |
3422 | * to special-case that result, and (earlier) keep track of the 'odd' | |
3423 | * century and year contributions. If we got 4 extra centuries in a qcent, | |
3424 | * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb. | |
3425 | * Otherwise, we add back in the earlier bias we removed (the 123 from | |
3426 | * figuring in March 1st), find the month index (integer division by 30.6), | |
3427 | * and the remainder is the day-of-month. We then have to convert back to | |
3428 | * 'real' months (including fixing January and February from being 14/15 in | |
3429 | * the previous year to being in the proper year). After that, to get | |
3430 | * tm_yday, we work with the normalised year and get a new yearday value for | |
3431 | * January 1st, which we subtract from the yearday value we had earlier, | |
3432 | * representing the date we've re-built. This is done from January 1 | |
3433 | * because tm_yday is 0-origin. | |
3434 | * | |
3435 | * Since POSIX time routines are only guaranteed to work for times since the | |
3436 | * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm | |
3437 | * applies Gregorian calendar rules even to dates before the 16th century | |
3438 | * doesn't bother me. Besides, you'd need cultural context for a given | |
3439 | * date to know whether it was Julian or Gregorian calendar, and that's | |
3440 | * outside the scope for this routine. Since we convert back based on the | |
3441 | * same rules we used to build the yearday, you'll only get strange results | |
3442 | * for input which needed normalising, or for the 'odd' century years which | |
3443 | * were leap years in the Julian calander but not in the Gregorian one. | |
3444 | * I can live with that. | |
3445 | * | |
3446 | * This algorithm also fails to handle years before A.D. 1 gracefully, but | |
3447 | * that's still outside the scope for POSIX time manipulation, so I don't | |
3448 | * care. | |
3449 | */ | |
3450 | ||
3451 | year = 1900 + ptm->tm_year; | |
3452 | month = ptm->tm_mon; | |
3453 | mday = ptm->tm_mday; | |
3454 | /* allow given yday with no month & mday to dominate the result */ | |
3455 | if (ptm->tm_yday >= 0 && mday <= 0 && month <= 0) { | |
3456 | month = 0; | |
3457 | mday = 0; | |
3458 | jday = 1 + ptm->tm_yday; | |
3459 | } | |
3460 | else { | |
3461 | jday = 0; | |
3462 | } | |
3463 | if (month >= 2) | |
3464 | month+=2; | |
3465 | else | |
3466 | month+=14, year--; | |
3467 | yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400; | |
3468 | yearday += month*MONTH_TO_DAYS + mday + jday; | |
3469 | /* | |
3470 | * Note that we don't know when leap-seconds were or will be, | |
3471 | * so we have to trust the user if we get something which looks | |
3472 | * like a sensible leap-second. Wild values for seconds will | |
3473 | * be rationalised, however. | |
3474 | */ | |
3475 | if ((unsigned) ptm->tm_sec <= 60) { | |
3476 | secs = 0; | |
3477 | } | |
3478 | else { | |
3479 | secs = ptm->tm_sec; | |
3480 | ptm->tm_sec = 0; | |
3481 | } | |
3482 | secs += 60 * ptm->tm_min; | |
3483 | secs += SECS_PER_HOUR * ptm->tm_hour; | |
3484 | if (secs < 0) { | |
3485 | if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) { | |
3486 | /* got negative remainder, but need positive time */ | |
3487 | /* back off an extra day to compensate */ | |
3488 | yearday += (secs/SECS_PER_DAY)-1; | |
3489 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1); | |
3490 | } | |
3491 | else { | |
3492 | yearday += (secs/SECS_PER_DAY); | |
3493 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY); | |
3494 | } | |
3495 | } | |
3496 | else if (secs >= SECS_PER_DAY) { | |
3497 | yearday += (secs/SECS_PER_DAY); | |
3498 | secs %= SECS_PER_DAY; | |
3499 | } | |
3500 | ptm->tm_hour = secs/SECS_PER_HOUR; | |
3501 | secs %= SECS_PER_HOUR; | |
3502 | ptm->tm_min = secs/60; | |
3503 | secs %= 60; | |
3504 | ptm->tm_sec += secs; | |
3505 | /* done with time of day effects */ | |
3506 | /* | |
3507 | * The algorithm for yearday has (so far) left it high by 428. | |
3508 | * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to | |
3509 | * bias it by 123 while trying to figure out what year it | |
3510 | * really represents. Even with this tweak, the reverse | |
3511 | * translation fails for years before A.D. 0001. | |
3512 | * It would still fail for Feb 29, but we catch that one below. | |
3513 | */ | |
3514 | jday = yearday; /* save for later fixup vis-a-vis Jan 1 */ | |
3515 | yearday -= YEAR_ADJUST; | |
3516 | year = (yearday / DAYS_PER_QCENT) * 400; | |
3517 | yearday %= DAYS_PER_QCENT; | |
3518 | odd_cent = yearday / DAYS_PER_CENT; | |
3519 | year += odd_cent * 100; | |
3520 | yearday %= DAYS_PER_CENT; | |
3521 | year += (yearday / DAYS_PER_QYEAR) * 4; | |
3522 | yearday %= DAYS_PER_QYEAR; | |
3523 | odd_year = yearday / DAYS_PER_YEAR; | |
3524 | year += odd_year; | |
3525 | yearday %= DAYS_PER_YEAR; | |
3526 | if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */ | |
3527 | month = 1; | |
3528 | yearday = 29; | |
3529 | } | |
3530 | else { | |
3531 | yearday += YEAR_ADJUST; /* recover March 1st crock */ | |
3532 | month = yearday*DAYS_TO_MONTH; | |
3533 | yearday -= month*MONTH_TO_DAYS; | |
3534 | /* recover other leap-year adjustment */ | |
3535 | if (month > 13) { | |
3536 | month-=14; | |
3537 | year++; | |
3538 | } | |
3539 | else { | |
3540 | month-=2; | |
3541 | } | |
3542 | } | |
3543 | ptm->tm_year = year - 1900; | |
3544 | if (yearday) { | |
3545 | ptm->tm_mday = yearday; | |
3546 | ptm->tm_mon = month; | |
3547 | } | |
3548 | else { | |
3549 | ptm->tm_mday = 31; | |
3550 | ptm->tm_mon = month - 1; | |
3551 | } | |
3552 | /* re-build yearday based on Jan 1 to get tm_yday */ | |
3553 | year--; | |
3554 | yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400; | |
3555 | yearday += 14*MONTH_TO_DAYS + 1; | |
3556 | ptm->tm_yday = jday - yearday; | |
3557 | /* fix tm_wday if not overridden by caller */ | |
3558 | if ((unsigned)ptm->tm_wday > 6) | |
3559 | ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7; | |
3560 | } | |
b3c85772 JH |
3561 | |
3562 | char * | |
e1ec3a88 | 3563 | Perl_my_strftime(pTHX_ const char *fmt, int sec, int min, int hour, int mday, int mon, int year, int wday, int yday, int isdst) |
b3c85772 JH |
3564 | { |
3565 | #ifdef HAS_STRFTIME | |
3566 | char *buf; | |
3567 | int buflen; | |
3568 | struct tm mytm; | |
3569 | int len; | |
3570 | ||
3571 | init_tm(&mytm); /* XXX workaround - see init_tm() above */ | |
3572 | mytm.tm_sec = sec; | |
3573 | mytm.tm_min = min; | |
3574 | mytm.tm_hour = hour; | |
3575 | mytm.tm_mday = mday; | |
3576 | mytm.tm_mon = mon; | |
3577 | mytm.tm_year = year; | |
3578 | mytm.tm_wday = wday; | |
3579 | mytm.tm_yday = yday; | |
3580 | mytm.tm_isdst = isdst; | |
3581 | mini_mktime(&mytm); | |
c473feec SR |
3582 | /* use libc to get the values for tm_gmtoff and tm_zone [perl #18238] */ |
3583 | #if defined(HAS_MKTIME) && (defined(HAS_TM_TM_GMTOFF) || defined(HAS_TM_TM_ZONE)) | |
3584 | STMT_START { | |
3585 | struct tm mytm2; | |
3586 | mytm2 = mytm; | |
3587 | mktime(&mytm2); | |
3588 | #ifdef HAS_TM_TM_GMTOFF | |
3589 | mytm.tm_gmtoff = mytm2.tm_gmtoff; | |
3590 | #endif | |
3591 | #ifdef HAS_TM_TM_ZONE | |
3592 | mytm.tm_zone = mytm2.tm_zone; | |
3593 | #endif | |
3594 | } STMT_END; | |
3595 | #endif | |
b3c85772 JH |
3596 | buflen = 64; |
3597 | New(0, buf, buflen, char); | |
3598 | len = strftime(buf, buflen, fmt, &mytm); | |
3599 | /* | |
877f6a72 | 3600 | ** The following is needed to handle to the situation where |
b3c85772 JH |
3601 | ** tmpbuf overflows. Basically we want to allocate a buffer |
3602 | ** and try repeatedly. The reason why it is so complicated | |
3603 | ** is that getting a return value of 0 from strftime can indicate | |
3604 | ** one of the following: | |
3605 | ** 1. buffer overflowed, | |
3606 | ** 2. illegal conversion specifier, or | |
3607 | ** 3. the format string specifies nothing to be returned(not | |
3608 | ** an error). This could be because format is an empty string | |
3609 | ** or it specifies %p that yields an empty string in some locale. | |
3610 | ** If there is a better way to make it portable, go ahead by | |
3611 | ** all means. | |
3612 | */ | |
3613 | if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0')) | |
3614 | return buf; | |
3615 | else { | |
3616 | /* Possibly buf overflowed - try again with a bigger buf */ | |
e1ec3a88 AL |
3617 | const int fmtlen = strlen(fmt); |
3618 | const int bufsize = fmtlen + buflen; | |
877f6a72 | 3619 | |
b3c85772 JH |
3620 | New(0, buf, bufsize, char); |
3621 | while (buf) { | |
3622 | buflen = strftime(buf, bufsize, fmt, &mytm); | |
3623 | if (buflen > 0 && buflen < bufsize) | |
3624 | break; | |
3625 | /* heuristic to prevent out-of-memory errors */ | |
3626 | if (bufsize > 100*fmtlen) { | |
3627 | Safefree(buf); | |
3628 | buf = NULL; | |
3629 | break; | |
3630 | } | |
e1ec3a88 | 3631 | Renew(buf, bufsize*2, char); |
b3c85772 JH |
3632 | } |
3633 | return buf; | |
3634 | } | |
3635 | #else | |
3636 | Perl_croak(aTHX_ "panic: no strftime"); | |
27da23d5 | 3637 | return NULL; |
b3c85772 JH |
3638 | #endif |
3639 | } | |
3640 | ||
877f6a72 NIS |
3641 | |
3642 | #define SV_CWD_RETURN_UNDEF \ | |
3643 | sv_setsv(sv, &PL_sv_undef); \ | |
3644 | return FALSE | |
3645 | ||
3646 | #define SV_CWD_ISDOT(dp) \ | |
3647 | (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \ | |
3aed30dc | 3648 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
877f6a72 NIS |
3649 | |
3650 | /* | |
ccfc67b7 JH |
3651 | =head1 Miscellaneous Functions |
3652 | ||
89423764 | 3653 | =for apidoc getcwd_sv |
877f6a72 NIS |
3654 | |
3655 | Fill the sv with current working directory | |
3656 | ||
3657 | =cut | |
3658 | */ | |
3659 | ||
3660 | /* Originally written in Perl by John Bazik; rewritten in C by Ben Sugars. | |
3661 | * rewritten again by dougm, optimized for use with xs TARG, and to prefer | |
3662 | * getcwd(3) if available | |
3663 | * Comments from the orignal: | |
3664 | * This is a faster version of getcwd. It's also more dangerous | |
3665 | * because you might chdir out of a directory that you can't chdir | |
3666 | * back into. */ | |
3667 | ||
877f6a72 | 3668 | int |
89423764 | 3669 | Perl_getcwd_sv(pTHX_ register SV *sv) |
877f6a72 NIS |
3670 | { |
3671 | #ifndef PERL_MICRO | |
3672 | ||
ea715489 JH |
3673 | #ifndef INCOMPLETE_TAINTS |
3674 | SvTAINTED_on(sv); | |
3675 | #endif | |
3676 | ||
8f95b30d JH |
3677 | #ifdef HAS_GETCWD |
3678 | { | |
60e110a8 DM |
3679 | char buf[MAXPATHLEN]; |
3680 | ||
3aed30dc | 3681 | /* Some getcwd()s automatically allocate a buffer of the given |
60e110a8 DM |
3682 | * size from the heap if they are given a NULL buffer pointer. |
3683 | * The problem is that this behaviour is not portable. */ | |
3aed30dc HS |
3684 | if (getcwd(buf, sizeof(buf) - 1)) { |
3685 | STRLEN len = strlen(buf); | |
3686 | sv_setpvn(sv, buf, len); | |
3687 | return TRUE; | |
3688 | } | |
3689 | else { | |
3690 | sv_setsv(sv, &PL_sv_undef); | |
3691 | return FALSE; | |
3692 | } | |
8f95b30d JH |
3693 | } |
3694 | ||
3695 | #else | |
3696 | ||
c623ac67 | 3697 | Stat_t statbuf; |
877f6a72 NIS |
3698 | int orig_cdev, orig_cino, cdev, cino, odev, oino, tdev, tino; |
3699 | int namelen, pathlen=0; | |
3700 | DIR *dir; | |
3701 | Direntry_t *dp; | |
877f6a72 NIS |
3702 | |
3703 | (void)SvUPGRADE(sv, SVt_PV); | |
3704 | ||
877f6a72 | 3705 | if (PerlLIO_lstat(".", &statbuf) < 0) { |
3aed30dc | 3706 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
3707 | } |
3708 | ||
3709 | orig_cdev = statbuf.st_dev; | |
3710 | orig_cino = statbuf.st_ino; | |
3711 | cdev = orig_cdev; | |
3712 | cino = orig_cino; | |
3713 | ||
3714 | for (;;) { | |
3aed30dc HS |
3715 | odev = cdev; |
3716 | oino = cino; | |
3717 | ||
3718 | if (PerlDir_chdir("..") < 0) { | |
3719 | SV_CWD_RETURN_UNDEF; | |
3720 | } | |
3721 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3722 | SV_CWD_RETURN_UNDEF; | |
3723 | } | |
3724 | ||
3725 | cdev = statbuf.st_dev; | |
3726 | cino = statbuf.st_ino; | |
3727 | ||
3728 | if (odev == cdev && oino == cino) { | |
3729 | break; | |
3730 | } | |
3731 | if (!(dir = PerlDir_open("."))) { | |
3732 | SV_CWD_RETURN_UNDEF; | |
3733 | } | |
3734 | ||
3735 | while ((dp = PerlDir_read(dir)) != NULL) { | |
877f6a72 | 3736 | #ifdef DIRNAMLEN |
3aed30dc | 3737 | namelen = dp->d_namlen; |
877f6a72 | 3738 | #else |
3aed30dc | 3739 | namelen = strlen(dp->d_name); |
877f6a72 | 3740 | #endif |
3aed30dc HS |
3741 | /* skip . and .. */ |
3742 | if (SV_CWD_ISDOT(dp)) { | |
3743 | continue; | |
3744 | } | |
3745 | ||
3746 | if (PerlLIO_lstat(dp->d_name, &statbuf) < 0) { | |
3747 | SV_CWD_RETURN_UNDEF; | |
3748 | } | |
3749 | ||
3750 | tdev = statbuf.st_dev; | |
3751 | tino = statbuf.st_ino; | |
3752 | if (tino == oino && tdev == odev) { | |
3753 | break; | |
3754 | } | |
cb5953d6 JH |
3755 | } |
3756 | ||
3aed30dc HS |
3757 | if (!dp) { |
3758 | SV_CWD_RETURN_UNDEF; | |
3759 | } | |
3760 | ||
3761 | if (pathlen + namelen + 1 >= MAXPATHLEN) { | |
3762 | SV_CWD_RETURN_UNDEF; | |
3763 | } | |
877f6a72 | 3764 | |
3aed30dc HS |
3765 | SvGROW(sv, pathlen + namelen + 1); |
3766 | ||
3767 | if (pathlen) { | |
3768 | /* shift down */ | |
3769 | Move(SvPVX(sv), SvPVX(sv) + namelen + 1, pathlen, char); | |
3770 | } | |
877f6a72 | 3771 | |
3aed30dc HS |
3772 | /* prepend current directory to the front */ |
3773 | *SvPVX(sv) = '/'; | |
3774 | Move(dp->d_name, SvPVX(sv)+1, namelen, char); | |
3775 | pathlen += (namelen + 1); | |
877f6a72 NIS |
3776 | |
3777 | #ifdef VOID_CLOSEDIR | |
3aed30dc | 3778 | PerlDir_close(dir); |
877f6a72 | 3779 | #else |
3aed30dc HS |
3780 | if (PerlDir_close(dir) < 0) { |
3781 | SV_CWD_RETURN_UNDEF; | |
3782 | } | |
877f6a72 NIS |
3783 | #endif |
3784 | } | |
3785 | ||
60e110a8 | 3786 | if (pathlen) { |
3aed30dc HS |
3787 | SvCUR_set(sv, pathlen); |
3788 | *SvEND(sv) = '\0'; | |
3789 | SvPOK_only(sv); | |
877f6a72 | 3790 | |
2a45baea | 3791 | if (PerlDir_chdir(SvPVX(sv)) < 0) { |
3aed30dc HS |
3792 | SV_CWD_RETURN_UNDEF; |
3793 | } | |
877f6a72 NIS |
3794 | } |
3795 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3aed30dc | 3796 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
3797 | } |
3798 | ||
3799 | cdev = statbuf.st_dev; | |
3800 | cino = statbuf.st_ino; | |
3801 | ||
3802 | if (cdev != orig_cdev || cino != orig_cino) { | |
3aed30dc HS |
3803 | Perl_croak(aTHX_ "Unstable directory path, " |
3804 | "current directory changed unexpectedly"); | |
877f6a72 | 3805 | } |
877f6a72 NIS |
3806 | |
3807 | return TRUE; | |
793b8d8e JH |
3808 | #endif |
3809 | ||
877f6a72 NIS |
3810 | #else |
3811 | return FALSE; | |
3812 | #endif | |
3813 | } | |
3814 | ||
f4758303 | 3815 | /* |
b0f01acb JP |
3816 | =for apidoc scan_version |
3817 | ||
3818 | Returns a pointer to the next character after the parsed | |
3819 | version string, as well as upgrading the passed in SV to | |
3820 | an RV. | |
3821 | ||
3822 | Function must be called with an already existing SV like | |
3823 | ||
137d6fc0 JP |
3824 | sv = newSV(0); |
3825 | s = scan_version(s,SV *sv, bool qv); | |
b0f01acb JP |
3826 | |
3827 | Performs some preprocessing to the string to ensure that | |
3828 | it has the correct characteristics of a version. Flags the | |
3829 | object if it contains an underscore (which denotes this | |
137d6fc0 JP |
3830 | is a alpha version). The boolean qv denotes that the version |
3831 | should be interpreted as if it had multiple decimals, even if | |
3832 | it doesn't. | |
b0f01acb JP |
3833 | |
3834 | =cut | |
3835 | */ | |
3836 | ||
3837 | char * | |
e1ec3a88 | 3838 | Perl_scan_version(pTHX_ const char *s, SV *rv, bool qv) |
b0f01acb | 3839 | { |
e568f1a0 | 3840 | const char *start = s; |
e1ec3a88 | 3841 | const char *pos = s; |
ad63d80f JP |
3842 | I32 saw_period = 0; |
3843 | bool saw_under = 0; | |
be2ebcad | 3844 | SV* sv = newSVrv(rv, "version"); /* create an SV and upgrade the RV */ |
ad63d80f | 3845 | (void)sv_upgrade(sv, SVt_PVAV); /* needs to be an AV type */ |
f9be5ac8 | 3846 | AvREAL_on((AV*)sv); |
ad63d80f JP |
3847 | |
3848 | /* pre-scan the imput string to check for decimals */ | |
3849 | while ( *pos == '.' || *pos == '_' || isDIGIT(*pos) ) | |
3850 | { | |
3851 | if ( *pos == '.' ) | |
3852 | { | |
3853 | if ( saw_under ) | |
5f89c282 | 3854 | Perl_croak(aTHX_ "Invalid version format (underscores before decimal)"); |
ad63d80f | 3855 | saw_period++ ; |
46314c13 | 3856 | } |
ad63d80f JP |
3857 | else if ( *pos == '_' ) |
3858 | { | |
3859 | if ( saw_under ) | |
5f89c282 | 3860 | Perl_croak(aTHX_ "Invalid version format (multiple underscores)"); |
ad63d80f JP |
3861 | saw_under = 1; |
3862 | } | |
3863 | pos++; | |
3864 | } | |
3865 | pos = s; | |
3866 | ||
137d6fc0 JP |
3867 | if (*pos == 'v') { |
3868 | pos++; /* get past 'v' */ | |
3869 | qv = 1; /* force quoted version processing */ | |
3870 | } | |
ad63d80f | 3871 | while (isDIGIT(*pos)) |
46314c13 | 3872 | pos++; |
ad63d80f JP |
3873 | if (!isALPHA(*pos)) { |
3874 | I32 rev; | |
3875 | ||
3876 | if (*s == 'v') s++; /* get past 'v' */ | |
3877 | ||
3878 | for (;;) { | |
3879 | rev = 0; | |
3880 | { | |
129318bd | 3881 | /* this is atoi() that delimits on underscores */ |
e1ec3a88 | 3882 | const char *end = pos; |
129318bd JP |
3883 | I32 mult = 1; |
3884 | I32 orev; | |
3885 | if ( s < pos && s > start && *(s-1) == '_' ) { | |
137d6fc0 | 3886 | mult *= -1; /* alpha version */ |
129318bd JP |
3887 | } |
3888 | /* the following if() will only be true after the decimal | |
3889 | * point of a version originally created with a bare | |
3890 | * floating point number, i.e. not quoted in any way | |
3891 | */ | |
13f8f398 | 3892 | if ( !qv && s > start+1 && saw_period == 1 ) { |
c76df65e | 3893 | mult *= 100; |
129318bd JP |
3894 | while ( s < end ) { |
3895 | orev = rev; | |
3896 | rev += (*s - '0') * mult; | |
3897 | mult /= 10; | |
32fdb065 | 3898 | if ( PERL_ABS(orev) > PERL_ABS(rev) ) |
129318bd JP |
3899 | Perl_croak(aTHX_ "Integer overflow in version"); |
3900 | s++; | |
3901 | } | |
3902 | } | |
3903 | else { | |
3904 | while (--end >= s) { | |
3905 | orev = rev; | |
3906 | rev += (*end - '0') * mult; | |
3907 | mult *= 10; | |
32fdb065 | 3908 | if ( PERL_ABS(orev) > PERL_ABS(rev) ) |
129318bd JP |
3909 | Perl_croak(aTHX_ "Integer overflow in version"); |
3910 | } | |
3911 | } | |
3912 | } | |
3913 | ||
3914 | /* Append revision */ | |
ad63d80f JP |
3915 | av_push((AV *)sv, newSViv(rev)); |
3916 | if ( (*pos == '.' || *pos == '_') && isDIGIT(pos[1])) | |
3917 | s = ++pos; | |
3918 | else if ( isDIGIT(*pos) ) | |
3919 | s = pos; | |
b0f01acb | 3920 | else { |
ad63d80f JP |
3921 | s = pos; |
3922 | break; | |
3923 | } | |
3924 | while ( isDIGIT(*pos) ) { | |
13f8f398 | 3925 | if ( saw_period == 1 && pos-s == 3 ) |
ad63d80f JP |
3926 | break; |
3927 | pos++; | |
b0f01acb JP |
3928 | } |
3929 | } | |
3930 | } | |
b9381830 JP |
3931 | if ( qv ) { /* quoted versions always become full version objects */ |
3932 | I32 len = av_len((AV *)sv); | |
4edfc503 NC |
3933 | /* This for loop appears to trigger a compiler bug on OS X, as it |
3934 | loops infinitely. Yes, len is negative. No, it makes no sense. | |
3935 | Compiler in question is: | |
3936 | gcc version 3.3 20030304 (Apple Computer, Inc. build 1640) | |
3937 | for ( len = 2 - len; len > 0; len-- ) | |
3938 | av_push((AV *)sv, newSViv(0)); | |
3939 | */ | |
3940 | len = 2 - len; | |
3941 | while (len-- > 0) | |
c76df65e | 3942 | av_push((AV *)sv, newSViv(0)); |
b9381830 | 3943 | } |
73d840c0 | 3944 | return (char *)s; |
b0f01acb JP |
3945 | } |
3946 | ||
3947 | /* | |
3948 | =for apidoc new_version | |
3949 | ||
3950 | Returns a new version object based on the passed in SV: | |
3951 | ||
3952 | SV *sv = new_version(SV *ver); | |
3953 | ||
3954 | Does not alter the passed in ver SV. See "upg_version" if you | |
3955 | want to upgrade the SV. | |
3956 | ||
3957 | =cut | |
3958 | */ | |
3959 | ||
3960 | SV * | |
3961 | Perl_new_version(pTHX_ SV *ver) | |
3962 | { | |
129318bd | 3963 | SV *rv = newSV(0); |
d7aa5382 JP |
3964 | if ( sv_derived_from(ver,"version") ) /* can just copy directly */ |
3965 | { | |
3966 | I32 key; | |
3967 | AV *av = (AV *)SvRV(ver); | |
3968 | SV* sv = newSVrv(rv, "version"); /* create an SV and upgrade the RV */ | |
3969 | (void)sv_upgrade(sv, SVt_PVAV); /* needs to be an AV type */ | |
f9be5ac8 | 3970 | AvREAL_on((AV*)sv); |
d7aa5382 JP |
3971 | for ( key = 0; key <= av_len(av); key++ ) |
3972 | { | |
3973 | I32 rev = SvIV(*av_fetch(av, key, FALSE)); | |
3974 | av_push((AV *)sv, newSViv(rev)); | |
3975 | } | |
3976 | return rv; | |
3977 | } | |
ad63d80f | 3978 | #ifdef SvVOK |
137d6fc0 JP |
3979 | if ( SvVOK(ver) ) { /* already a v-string */ |
3980 | char *version; | |
b0f01acb JP |
3981 | MAGIC* mg = mg_find(ver,PERL_MAGIC_vstring); |
3982 | version = savepvn( (const char*)mg->mg_ptr,mg->mg_len ); | |
137d6fc0 JP |
3983 | sv_setpv(rv,version); |
3984 | Safefree(version); | |
b0f01acb | 3985 | } |
137d6fc0 | 3986 | else { |
ad63d80f | 3987 | #endif |
137d6fc0 JP |
3988 | sv_setsv(rv,ver); /* make a duplicate */ |
3989 | #ifdef SvVOK | |
26ec6fc3 | 3990 | } |
137d6fc0 JP |
3991 | #endif |
3992 | upg_version(rv); | |
b0f01acb JP |
3993 | return rv; |
3994 | } | |
3995 | ||
3996 | /* | |
3997 | =for apidoc upg_version | |
3998 | ||
3999 | In-place upgrade of the supplied SV to a version object. | |
4000 | ||
4001 | SV *sv = upg_version(SV *sv); | |
4002 | ||
4003 | Returns a pointer to the upgraded SV. | |
4004 | ||
4005 | =cut | |
4006 | */ | |
4007 | ||
4008 | SV * | |
ad63d80f | 4009 | Perl_upg_version(pTHX_ SV *ver) |
b0f01acb | 4010 | { |
137d6fc0 JP |
4011 | char *version; |
4012 | bool qv = 0; | |
4013 | ||
4014 | if ( SvNOK(ver) ) /* may get too much accuracy */ | |
4015 | { | |
4016 | char tbuf[64]; | |
4017 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); | |
4018 | version = savepv(tbuf); | |
4019 | } | |
ad63d80f | 4020 | #ifdef SvVOK |
137d6fc0 | 4021 | else if ( SvVOK(ver) ) { /* already a v-string */ |
ad63d80f JP |
4022 | MAGIC* mg = mg_find(ver,PERL_MAGIC_vstring); |
4023 | version = savepvn( (const char*)mg->mg_ptr,mg->mg_len ); | |
137d6fc0 | 4024 | qv = 1; |
b0f01acb | 4025 | } |
ad63d80f | 4026 | #endif |
137d6fc0 JP |
4027 | else /* must be a string or something like a string */ |
4028 | { | |
2e0de35c | 4029 | version = savesvpv(ver); |
137d6fc0 JP |
4030 | } |
4031 | (void)scan_version(version, ver, qv); | |
4032 | Safefree(version); | |
ad63d80f | 4033 | return ver; |
b0f01acb JP |
4034 | } |
4035 | ||
4036 | ||
4037 | /* | |
4038 | =for apidoc vnumify | |
4039 | ||
ad63d80f JP |
4040 | Accepts a version object and returns the normalized floating |
4041 | point representation. Call like: | |
b0f01acb | 4042 | |
ad63d80f | 4043 | sv = vnumify(rv); |
b0f01acb | 4044 | |
ad63d80f JP |
4045 | NOTE: you can pass either the object directly or the SV |
4046 | contained within the RV. | |
b0f01acb JP |
4047 | |
4048 | =cut | |
4049 | */ | |
4050 | ||
4051 | SV * | |
ad63d80f | 4052 | Perl_vnumify(pTHX_ SV *vs) |
b0f01acb | 4053 | { |
ad63d80f | 4054 | I32 i, len, digit; |
137d6fc0 | 4055 | SV *sv = newSV(0); |
ad63d80f JP |
4056 | if ( SvROK(vs) ) |
4057 | vs = SvRV(vs); | |
4058 | len = av_len((AV *)vs); | |
46314c13 JP |
4059 | if ( len == -1 ) |
4060 | { | |
4061 | Perl_sv_catpv(aTHX_ sv,"0"); | |
4062 | return sv; | |
4063 | } | |
ad63d80f | 4064 | digit = SvIVX(*av_fetch((AV *)vs, 0, 0)); |
c0fd1b42 | 4065 | Perl_sv_setpvf(aTHX_ sv,"%d.", (int)PERL_ABS(digit)); |
13f8f398 | 4066 | for ( i = 1 ; i < len ; i++ ) |
b0f01acb | 4067 | { |
ad63d80f | 4068 | digit = SvIVX(*av_fetch((AV *)vs, i, 0)); |
c0fd1b42 | 4069 | Perl_sv_catpvf(aTHX_ sv,"%03d", (int)PERL_ABS(digit)); |
b0f01acb | 4070 | } |
13f8f398 JP |
4071 | |
4072 | if ( len > 0 ) | |
4073 | { | |
4074 | digit = SvIVX(*av_fetch((AV *)vs, len, 0)); | |
13f8f398 JP |
4075 | if ( (int)PERL_ABS(digit) != 0 || len == 1 ) |
4076 | { | |
c76df65e RGS |
4077 | if ( digit < 0 ) /* alpha version */ |
4078 | Perl_sv_catpv(aTHX_ sv,"_"); | |
4079 | /* Don't display additional trailing zeros */ | |
13f8f398 JP |
4080 | Perl_sv_catpvf(aTHX_ sv,"%03d", (int)PERL_ABS(digit)); |
4081 | } | |
4082 | } | |
4083 | else /* len == 0 */ | |
4084 | { | |
ad63d80f | 4085 | Perl_sv_catpv(aTHX_ sv,"000"); |
13f8f398 | 4086 | } |
b0f01acb JP |
4087 | return sv; |
4088 | } | |
4089 | ||
4090 | /* | |
b9381830 | 4091 | =for apidoc vnormal |
b0f01acb | 4092 | |
ad63d80f JP |
4093 | Accepts a version object and returns the normalized string |
4094 | representation. Call like: | |
b0f01acb | 4095 | |
b9381830 | 4096 | sv = vnormal(rv); |
b0f01acb | 4097 | |
ad63d80f JP |
4098 | NOTE: you can pass either the object directly or the SV |
4099 | contained within the RV. | |
b0f01acb JP |
4100 | |
4101 | =cut | |
4102 | */ | |
4103 | ||
4104 | SV * | |
b9381830 | 4105 | Perl_vnormal(pTHX_ SV *vs) |
b0f01acb | 4106 | { |
ad63d80f | 4107 | I32 i, len, digit; |
137d6fc0 | 4108 | SV *sv = newSV(0); |
ad63d80f JP |
4109 | if ( SvROK(vs) ) |
4110 | vs = SvRV(vs); | |
4111 | len = av_len((AV *)vs); | |
46314c13 JP |
4112 | if ( len == -1 ) |
4113 | { | |
4114 | Perl_sv_catpv(aTHX_ sv,""); | |
4115 | return sv; | |
4116 | } | |
ad63d80f | 4117 | digit = SvIVX(*av_fetch((AV *)vs, 0, 0)); |
e3feee4e | 4118 | Perl_sv_setpvf(aTHX_ sv,"%"IVdf,(IV)digit); |
ad63d80f | 4119 | for ( i = 1 ; i <= len ; i++ ) |
46314c13 | 4120 | { |
ad63d80f JP |
4121 | digit = SvIVX(*av_fetch((AV *)vs, i, 0)); |
4122 | if ( digit < 0 ) | |
e3feee4e | 4123 | Perl_sv_catpvf(aTHX_ sv,"_%"IVdf,(IV)-digit); |
ad63d80f | 4124 | else |
e3feee4e | 4125 | Perl_sv_catpvf(aTHX_ sv,".%"IVdf,(IV)digit); |
b0f01acb | 4126 | } |
137d6fc0 JP |
4127 | |
4128 | if ( len <= 2 ) { /* short version, must be at least three */ | |
4129 | for ( len = 2 - len; len != 0; len-- ) | |
4130 | Perl_sv_catpv(aTHX_ sv,".0"); | |
4131 | } | |
4132 | ||
b0f01acb | 4133 | return sv; |
129318bd | 4134 | } |
b0f01acb | 4135 | |
ad63d80f | 4136 | /* |
b9381830 JP |
4137 | =for apidoc vstringify |
4138 | ||
4139 | In order to maintain maximum compatibility with earlier versions | |
4140 | of Perl, this function will return either the floating point | |
4141 | notation or the multiple dotted notation, depending on whether | |
4142 | the original version contained 1 or more dots, respectively | |
4143 | ||
4144 | =cut | |
4145 | */ | |
4146 | ||
4147 | SV * | |
4148 | Perl_vstringify(pTHX_ SV *vs) | |
4149 | { | |
c76df65e | 4150 | I32 len, digit; |
b9381830 JP |
4151 | if ( SvROK(vs) ) |
4152 | vs = SvRV(vs); | |
4153 | len = av_len((AV *)vs); | |
c76df65e | 4154 | digit = SvIVX(*av_fetch((AV *)vs, len, 0)); |
b9381830 | 4155 | |
c76df65e | 4156 | if ( len < 2 || ( len == 2 && digit < 0 ) ) |
b9381830 JP |
4157 | return vnumify(vs); |
4158 | else | |
4159 | return vnormal(vs); | |
4160 | } | |
4161 | ||
4162 | /* | |
ad63d80f JP |
4163 | =for apidoc vcmp |
4164 | ||
4165 | Version object aware cmp. Both operands must already have been | |
4166 | converted into version objects. | |
4167 | ||
4168 | =cut | |
4169 | */ | |
4170 | ||
4171 | int | |
4172 | Perl_vcmp(pTHX_ SV *lsv, SV *rsv) | |
4173 | { | |
4174 | I32 i,l,m,r,retval; | |
4175 | if ( SvROK(lsv) ) | |
4176 | lsv = SvRV(lsv); | |
4177 | if ( SvROK(rsv) ) | |
4178 | rsv = SvRV(rsv); | |
4179 | l = av_len((AV *)lsv); | |
4180 | r = av_len((AV *)rsv); | |
4181 | m = l < r ? l : r; | |
4182 | retval = 0; | |
4183 | i = 0; | |
4184 | while ( i <= m && retval == 0 ) | |
4185 | { | |
4186 | I32 left = SvIV(*av_fetch((AV *)lsv,i,0)); | |
4187 | I32 right = SvIV(*av_fetch((AV *)rsv,i,0)); | |
137d6fc0 JP |
4188 | bool lalpha = left < 0 ? 1 : 0; |
4189 | bool ralpha = right < 0 ? 1 : 0; | |
4190 | left = abs(left); | |
4191 | right = abs(right); | |
4192 | if ( left < right || (left == right && lalpha && !ralpha) ) | |
ad63d80f | 4193 | retval = -1; |
137d6fc0 | 4194 | if ( left > right || (left == right && ralpha && !lalpha) ) |
ad63d80f JP |
4195 | retval = +1; |
4196 | i++; | |
4197 | } | |
4198 | ||
137d6fc0 | 4199 | if ( l != r && retval == 0 ) /* possible match except for trailing 0's */ |
129318bd | 4200 | { |
137d6fc0 | 4201 | if ( l < r ) |
129318bd | 4202 | { |
137d6fc0 JP |
4203 | while ( i <= r && retval == 0 ) |
4204 | { | |
4205 | if ( SvIV(*av_fetch((AV *)rsv,i,0)) != 0 ) | |
4206 | retval = -1; /* not a match after all */ | |
4207 | i++; | |
4208 | } | |
4209 | } | |
4210 | else | |
4211 | { | |
4212 | while ( i <= l && retval == 0 ) | |
4213 | { | |
4214 | if ( SvIV(*av_fetch((AV *)lsv,i,0)) != 0 ) | |
4215 | retval = +1; /* not a match after all */ | |
4216 | i++; | |
4217 | } | |
129318bd JP |
4218 | } |
4219 | } | |
ad63d80f JP |
4220 | return retval; |
4221 | } | |
4222 | ||
c95c94b1 | 4223 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) && defined(SOCK_DGRAM) && defined(HAS_SELECT) |
2bc69dc4 NIS |
4224 | # define EMULATE_SOCKETPAIR_UDP |
4225 | #endif | |
4226 | ||
4227 | #ifdef EMULATE_SOCKETPAIR_UDP | |
02fc2eee NC |
4228 | static int |
4229 | S_socketpair_udp (int fd[2]) { | |
e10bb1e9 | 4230 | dTHX; |
02fc2eee NC |
4231 | /* Fake a datagram socketpair using UDP to localhost. */ |
4232 | int sockets[2] = {-1, -1}; | |
4233 | struct sockaddr_in addresses[2]; | |
4234 | int i; | |
3aed30dc | 4235 | Sock_size_t size = sizeof(struct sockaddr_in); |
ae92b34e | 4236 | unsigned short port; |
02fc2eee NC |
4237 | int got; |
4238 | ||
3aed30dc | 4239 | memset(&addresses, 0, sizeof(addresses)); |
02fc2eee NC |
4240 | i = 1; |
4241 | do { | |
3aed30dc HS |
4242 | sockets[i] = PerlSock_socket(AF_INET, SOCK_DGRAM, PF_INET); |
4243 | if (sockets[i] == -1) | |
4244 | goto tidy_up_and_fail; | |
4245 | ||
4246 | addresses[i].sin_family = AF_INET; | |
4247 | addresses[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
4248 | addresses[i].sin_port = 0; /* kernel choses port. */ | |
4249 | if (PerlSock_bind(sockets[i], (struct sockaddr *) &addresses[i], | |
4250 | sizeof(struct sockaddr_in)) == -1) | |
4251 | goto tidy_up_and_fail; | |
02fc2eee NC |
4252 | } while (i--); |
4253 | ||
4254 | /* Now have 2 UDP sockets. Find out which port each is connected to, and | |
4255 | for each connect the other socket to it. */ | |
4256 | i = 1; | |
4257 | do { | |
3aed30dc HS |
4258 | if (PerlSock_getsockname(sockets[i], (struct sockaddr *) &addresses[i], |
4259 | &size) == -1) | |
4260 | goto tidy_up_and_fail; | |
4261 | if (size != sizeof(struct sockaddr_in)) | |
4262 | goto abort_tidy_up_and_fail; | |
4263 | /* !1 is 0, !0 is 1 */ | |
4264 | if (PerlSock_connect(sockets[!i], (struct sockaddr *) &addresses[i], | |
4265 | sizeof(struct sockaddr_in)) == -1) | |
4266 | goto tidy_up_and_fail; | |
02fc2eee NC |
4267 | } while (i--); |
4268 | ||
4269 | /* Now we have 2 sockets connected to each other. I don't trust some other | |
4270 | process not to have already sent a packet to us (by random) so send | |
4271 | a packet from each to the other. */ | |
4272 | i = 1; | |
4273 | do { | |
3aed30dc HS |
4274 | /* I'm going to send my own port number. As a short. |
4275 | (Who knows if someone somewhere has sin_port as a bitfield and needs | |
4276 | this routine. (I'm assuming crays have socketpair)) */ | |
4277 | port = addresses[i].sin_port; | |
4278 | got = PerlLIO_write(sockets[i], &port, sizeof(port)); | |
4279 | if (got != sizeof(port)) { | |
4280 | if (got == -1) | |
4281 | goto tidy_up_and_fail; | |
4282 | goto abort_tidy_up_and_fail; | |
4283 | } | |
02fc2eee NC |
4284 | } while (i--); |
4285 | ||
4286 | /* Packets sent. I don't trust them to have arrived though. | |
4287 | (As I understand it Solaris TCP stack is multithreaded. Non-blocking | |
4288 | connect to localhost will use a second kernel thread. In 2.6 the | |
4289 | first thread running the connect() returns before the second completes, | |
4290 | so EINPROGRESS> In 2.7 the improved stack is faster and connect() | |
4291 | returns 0. Poor programs have tripped up. One poor program's authors' | |
4292 | had a 50-1 reverse stock split. Not sure how connected these were.) | |
4293 | So I don't trust someone not to have an unpredictable UDP stack. | |
4294 | */ | |
4295 | ||
4296 | { | |
3aed30dc HS |
4297 | struct timeval waitfor = {0, 100000}; /* You have 0.1 seconds */ |
4298 | int max = sockets[1] > sockets[0] ? sockets[1] : sockets[0]; | |
4299 | fd_set rset; | |
4300 | ||
4301 | FD_ZERO(&rset); | |
4302 | FD_SET(sockets[0], &rset); | |
4303 | FD_SET(sockets[1], &rset); | |
4304 | ||
4305 | got = PerlSock_select(max + 1, &rset, NULL, NULL, &waitfor); | |
4306 | if (got != 2 || !FD_ISSET(sockets[0], &rset) | |
4307 | || !FD_ISSET(sockets[1], &rset)) { | |
4308 | /* I hope this is portable and appropriate. */ | |
4309 | if (got == -1) | |
4310 | goto tidy_up_and_fail; | |
4311 | goto abort_tidy_up_and_fail; | |
4312 | } | |
02fc2eee | 4313 | } |
f4758303 | 4314 | |
02fc2eee NC |
4315 | /* And the paranoia department even now doesn't trust it to have arrive |
4316 | (hence MSG_DONTWAIT). Or that what arrives was sent by us. */ | |
4317 | { | |
3aed30dc HS |
4318 | struct sockaddr_in readfrom; |
4319 | unsigned short buffer[2]; | |
02fc2eee | 4320 | |
3aed30dc HS |
4321 | i = 1; |
4322 | do { | |
02fc2eee | 4323 | #ifdef MSG_DONTWAIT |
3aed30dc HS |
4324 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
4325 | sizeof(buffer), MSG_DONTWAIT, | |
4326 | (struct sockaddr *) &readfrom, &size); | |
02fc2eee | 4327 | #else |
3aed30dc HS |
4328 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
4329 | sizeof(buffer), 0, | |
4330 | (struct sockaddr *) &readfrom, &size); | |
e10bb1e9 | 4331 | #endif |
02fc2eee | 4332 | |
3aed30dc HS |
4333 | if (got == -1) |
4334 | goto tidy_up_and_fail; | |
4335 | if (got != sizeof(port) | |
4336 | || size != sizeof(struct sockaddr_in) | |
4337 | /* Check other socket sent us its port. */ | |
4338 | || buffer[0] != (unsigned short) addresses[!i].sin_port | |
4339 | /* Check kernel says we got the datagram from that socket */ | |
4340 | || readfrom.sin_family != addresses[!i].sin_family | |
4341 | || readfrom.sin_addr.s_addr != addresses[!i].sin_addr.s_addr | |
4342 | || readfrom.sin_port != addresses[!i].sin_port) | |
4343 | goto abort_tidy_up_and_fail; | |
4344 | } while (i--); | |
02fc2eee NC |
4345 | } |
4346 | /* My caller (my_socketpair) has validated that this is non-NULL */ | |
4347 | fd[0] = sockets[0]; | |
4348 | fd[1] = sockets[1]; | |
4349 | /* I hereby declare this connection open. May God bless all who cross | |
4350 | her. */ | |
4351 | return 0; | |
4352 | ||
4353 | abort_tidy_up_and_fail: | |
4354 | errno = ECONNABORTED; | |
4355 | tidy_up_and_fail: | |
4356 | { | |
3aed30dc HS |
4357 | int save_errno = errno; |
4358 | if (sockets[0] != -1) | |
4359 | PerlLIO_close(sockets[0]); | |
4360 | if (sockets[1] != -1) | |
4361 | PerlLIO_close(sockets[1]); | |
4362 | errno = save_errno; | |
4363 | return -1; | |
02fc2eee NC |
4364 | } |
4365 | } | |
85ca448a | 4366 | #endif /* EMULATE_SOCKETPAIR_UDP */ |
02fc2eee | 4367 | |
b5ac89c3 | 4368 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) |
02fc2eee NC |
4369 | int |
4370 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { | |
4371 | /* Stevens says that family must be AF_LOCAL, protocol 0. | |
2948e0bd | 4372 | I'm going to enforce that, then ignore it, and use TCP (or UDP). */ |
e10bb1e9 | 4373 | dTHX; |
02fc2eee NC |
4374 | int listener = -1; |
4375 | int connector = -1; | |
4376 | int acceptor = -1; | |
4377 | struct sockaddr_in listen_addr; | |
4378 | struct sockaddr_in connect_addr; | |
4379 | Sock_size_t size; | |
4380 | ||
50458334 JH |
4381 | if (protocol |
4382 | #ifdef AF_UNIX | |
4383 | || family != AF_UNIX | |
4384 | #endif | |
3aed30dc HS |
4385 | ) { |
4386 | errno = EAFNOSUPPORT; | |
4387 | return -1; | |
02fc2eee | 4388 | } |
2948e0bd | 4389 | if (!fd) { |
3aed30dc HS |
4390 | errno = EINVAL; |
4391 | return -1; | |
2948e0bd | 4392 | } |
02fc2eee | 4393 | |
2bc69dc4 | 4394 | #ifdef EMULATE_SOCKETPAIR_UDP |
02fc2eee | 4395 | if (type == SOCK_DGRAM) |
3aed30dc | 4396 | return S_socketpair_udp(fd); |
2bc69dc4 | 4397 | #endif |
02fc2eee | 4398 | |
3aed30dc | 4399 | listener = PerlSock_socket(AF_INET, type, 0); |
02fc2eee | 4400 | if (listener == -1) |
3aed30dc HS |
4401 | return -1; |
4402 | memset(&listen_addr, 0, sizeof(listen_addr)); | |
02fc2eee | 4403 | listen_addr.sin_family = AF_INET; |
3aed30dc | 4404 | listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); |
02fc2eee | 4405 | listen_addr.sin_port = 0; /* kernel choses port. */ |
3aed30dc HS |
4406 | if (PerlSock_bind(listener, (struct sockaddr *) &listen_addr, |
4407 | sizeof(listen_addr)) == -1) | |
4408 | goto tidy_up_and_fail; | |
e10bb1e9 | 4409 | if (PerlSock_listen(listener, 1) == -1) |
3aed30dc | 4410 | goto tidy_up_and_fail; |
02fc2eee | 4411 | |
3aed30dc | 4412 | connector = PerlSock_socket(AF_INET, type, 0); |
02fc2eee | 4413 | if (connector == -1) |
3aed30dc | 4414 | goto tidy_up_and_fail; |
02fc2eee | 4415 | /* We want to find out the port number to connect to. */ |
3aed30dc HS |
4416 | size = sizeof(connect_addr); |
4417 | if (PerlSock_getsockname(listener, (struct sockaddr *) &connect_addr, | |
4418 | &size) == -1) | |
4419 | goto tidy_up_and_fail; | |
4420 | if (size != sizeof(connect_addr)) | |
4421 | goto abort_tidy_up_and_fail; | |
e10bb1e9 | 4422 | if (PerlSock_connect(connector, (struct sockaddr *) &connect_addr, |
3aed30dc HS |
4423 | sizeof(connect_addr)) == -1) |
4424 | goto tidy_up_and_fail; | |
02fc2eee | 4425 | |
3aed30dc HS |
4426 | size = sizeof(listen_addr); |
4427 | acceptor = PerlSock_accept(listener, (struct sockaddr *) &listen_addr, | |
4428 | &size); | |
02fc2eee | 4429 | if (acceptor == -1) |
3aed30dc HS |
4430 | goto tidy_up_and_fail; |
4431 | if (size != sizeof(listen_addr)) | |
4432 | goto abort_tidy_up_and_fail; | |
4433 | PerlLIO_close(listener); | |
02fc2eee NC |
4434 | /* Now check we are talking to ourself by matching port and host on the |
4435 | two sockets. */ | |
3aed30dc HS |
4436 | if (PerlSock_getsockname(connector, (struct sockaddr *) &connect_addr, |
4437 | &size) == -1) | |
4438 | goto tidy_up_and_fail; | |
4439 | if (size != sizeof(connect_addr) | |
4440 | || listen_addr.sin_family != connect_addr.sin_family | |
4441 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr | |
4442 | || listen_addr.sin_port != connect_addr.sin_port) { | |
4443 | goto abort_tidy_up_and_fail; | |
02fc2eee NC |
4444 | } |
4445 | fd[0] = connector; | |
4446 | fd[1] = acceptor; | |
4447 | return 0; | |
4448 | ||
4449 | abort_tidy_up_and_fail: | |
27da23d5 JH |
4450 | #ifdef ECONNABORTED |
4451 | errno = ECONNABORTED; /* This would be the standard thing to do. */ | |
4452 | #else | |
4453 | # ifdef ECONNREFUSED | |
4454 | errno = ECONNREFUSED; /* E.g. Symbian does not have ECONNABORTED. */ | |
4455 | # else | |
4456 | errno = ETIMEDOUT; /* Desperation time. */ | |
4457 | # endif | |
4458 | #endif | |
02fc2eee NC |
4459 | tidy_up_and_fail: |
4460 | { | |
3aed30dc HS |
4461 | int save_errno = errno; |
4462 | if (listener != -1) | |
4463 | PerlLIO_close(listener); | |
4464 | if (connector != -1) | |
4465 | PerlLIO_close(connector); | |
4466 | if (acceptor != -1) | |
4467 | PerlLIO_close(acceptor); | |
4468 | errno = save_errno; | |
4469 | return -1; | |
02fc2eee NC |
4470 | } |
4471 | } | |
85ca448a | 4472 | #else |
48ea76d1 JH |
4473 | /* In any case have a stub so that there's code corresponding |
4474 | * to the my_socketpair in global.sym. */ | |
4475 | int | |
4476 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { | |
daf16542 | 4477 | #ifdef HAS_SOCKETPAIR |
48ea76d1 | 4478 | return socketpair(family, type, protocol, fd); |
daf16542 JH |
4479 | #else |
4480 | return -1; | |
4481 | #endif | |
48ea76d1 JH |
4482 | } |
4483 | #endif | |
4484 | ||
68795e93 NIS |
4485 | /* |
4486 | ||
4487 | =for apidoc sv_nosharing | |
4488 | ||
4489 | Dummy routine which "shares" an SV when there is no sharing module present. | |
4490 | Exists to avoid test for a NULL function pointer and because it could potentially warn under | |
4491 | some level of strict-ness. | |
4492 | ||
4493 | =cut | |
4494 | */ | |
4495 | ||
4496 | void | |
4497 | Perl_sv_nosharing(pTHX_ SV *sv) | |
4498 | { | |
73d840c0 | 4499 | (void)sv; |
68795e93 NIS |
4500 | } |
4501 | ||
4502 | /* | |
4503 | =for apidoc sv_nolocking | |
4504 | ||
4505 | Dummy routine which "locks" an SV when there is no locking module present. | |
4506 | Exists to avoid test for a NULL function pointer and because it could potentially warn under | |
4507 | some level of strict-ness. | |
4508 | ||
4509 | =cut | |
4510 | */ | |
4511 | ||
4512 | void | |
4513 | Perl_sv_nolocking(pTHX_ SV *sv) | |
4514 | { | |
73d840c0 | 4515 | (void)sv; |
68795e93 NIS |
4516 | } |
4517 | ||
4518 | ||
4519 | /* | |
4520 | =for apidoc sv_nounlocking | |
4521 | ||
4522 | Dummy routine which "unlocks" an SV when there is no locking module present. | |
4523 | Exists to avoid test for a NULL function pointer and because it could potentially warn under | |
4524 | some level of strict-ness. | |
4525 | ||
4526 | =cut | |
4527 | */ | |
4528 | ||
4529 | void | |
4530 | Perl_sv_nounlocking(pTHX_ SV *sv) | |
4531 | { | |
73d840c0 | 4532 | (void)sv; |
68795e93 NIS |
4533 | } |
4534 | ||
a05d7ebb | 4535 | U32 |
e1ec3a88 | 4536 | Perl_parse_unicode_opts(pTHX_ const char **popt) |
a05d7ebb | 4537 | { |
e1ec3a88 | 4538 | const char *p = *popt; |
a05d7ebb JH |
4539 | U32 opt = 0; |
4540 | ||
4541 | if (*p) { | |
4542 | if (isDIGIT(*p)) { | |
4543 | opt = (U32) atoi(p); | |
4544 | while (isDIGIT(*p)) p++; | |
7c91f477 | 4545 | if (*p && *p != '\n' && *p != '\r') |
a05d7ebb JH |
4546 | Perl_croak(aTHX_ "Unknown Unicode option letter '%c'", *p); |
4547 | } | |
4548 | else { | |
4549 | for (; *p; p++) { | |
4550 | switch (*p) { | |
4551 | case PERL_UNICODE_STDIN: | |
4552 | opt |= PERL_UNICODE_STDIN_FLAG; break; | |
4553 | case PERL_UNICODE_STDOUT: | |
4554 | opt |= PERL_UNICODE_STDOUT_FLAG; break; | |
4555 | case PERL_UNICODE_STDERR: | |
4556 | opt |= PERL_UNICODE_STDERR_FLAG; break; | |
4557 | case PERL_UNICODE_STD: | |
4558 | opt |= PERL_UNICODE_STD_FLAG; break; | |
4559 | case PERL_UNICODE_IN: | |
4560 | opt |= PERL_UNICODE_IN_FLAG; break; | |
4561 | case PERL_UNICODE_OUT: | |
4562 | opt |= PERL_UNICODE_OUT_FLAG; break; | |
4563 | case PERL_UNICODE_INOUT: | |
4564 | opt |= PERL_UNICODE_INOUT_FLAG; break; | |
4565 | case PERL_UNICODE_LOCALE: | |
4566 | opt |= PERL_UNICODE_LOCALE_FLAG; break; | |
4567 | case PERL_UNICODE_ARGV: | |
4568 | opt |= PERL_UNICODE_ARGV_FLAG; break; | |
4569 | default: | |
7c91f477 JH |
4570 | if (*p != '\n' && *p != '\r') |
4571 | Perl_croak(aTHX_ | |
4572 | "Unknown Unicode option letter '%c'", *p); | |
a05d7ebb JH |
4573 | } |
4574 | } | |
4575 | } | |
4576 | } | |
4577 | else | |
4578 | opt = PERL_UNICODE_DEFAULT_FLAGS; | |
4579 | ||
4580 | if (opt & ~PERL_UNICODE_ALL_FLAGS) | |
06e66572 | 4581 | Perl_croak(aTHX_ "Unknown Unicode option value %"UVuf, |
a05d7ebb JH |
4582 | (UV) (opt & ~PERL_UNICODE_ALL_FLAGS)); |
4583 | ||
4584 | *popt = p; | |
4585 | ||
4586 | return opt; | |
4587 | } | |
4588 | ||
132efe8b JH |
4589 | U32 |
4590 | Perl_seed(pTHX) | |
4591 | { | |
4592 | /* | |
4593 | * This is really just a quick hack which grabs various garbage | |
4594 | * values. It really should be a real hash algorithm which | |
4595 | * spreads the effect of every input bit onto every output bit, | |
4596 | * if someone who knows about such things would bother to write it. | |
4597 | * Might be a good idea to add that function to CORE as well. | |
4598 | * No numbers below come from careful analysis or anything here, | |
4599 | * except they are primes and SEED_C1 > 1E6 to get a full-width | |
4600 | * value from (tv_sec * SEED_C1 + tv_usec). The multipliers should | |
4601 | * probably be bigger too. | |
4602 | */ | |
4603 | #if RANDBITS > 16 | |
4604 | # define SEED_C1 1000003 | |
4605 | #define SEED_C4 73819 | |
4606 | #else | |
4607 | # define SEED_C1 25747 | |
4608 | #define SEED_C4 20639 | |
4609 | #endif | |
4610 | #define SEED_C2 3 | |
4611 | #define SEED_C3 269 | |
4612 | #define SEED_C5 26107 | |
4613 | ||
4614 | #ifndef PERL_NO_DEV_RANDOM | |
4615 | int fd; | |
4616 | #endif | |
4617 | U32 u; | |
4618 | #ifdef VMS | |
4619 | # include <starlet.h> | |
4620 | /* when[] = (low 32 bits, high 32 bits) of time since epoch | |
4621 | * in 100-ns units, typically incremented ever 10 ms. */ | |
4622 | unsigned int when[2]; | |
4623 | #else | |
4624 | # ifdef HAS_GETTIMEOFDAY | |
4625 | struct timeval when; | |
4626 | # else | |
4627 | Time_t when; | |
4628 | # endif | |
4629 | #endif | |
4630 | ||
4631 | /* This test is an escape hatch, this symbol isn't set by Configure. */ | |
4632 | #ifndef PERL_NO_DEV_RANDOM | |
4633 | #ifndef PERL_RANDOM_DEVICE | |
4634 | /* /dev/random isn't used by default because reads from it will block | |
4635 | * if there isn't enough entropy available. You can compile with | |
4636 | * PERL_RANDOM_DEVICE to it if you'd prefer Perl to block until there | |
4637 | * is enough real entropy to fill the seed. */ | |
4638 | # define PERL_RANDOM_DEVICE "/dev/urandom" | |
4639 | #endif | |
4640 | fd = PerlLIO_open(PERL_RANDOM_DEVICE, 0); | |
4641 | if (fd != -1) { | |
27da23d5 | 4642 | if (PerlLIO_read(fd, (void*)&u, sizeof u) != sizeof u) |
132efe8b JH |
4643 | u = 0; |
4644 | PerlLIO_close(fd); | |
4645 | if (u) | |
4646 | return u; | |
4647 | } | |
4648 | #endif | |
4649 | ||
4650 | #ifdef VMS | |
4651 | _ckvmssts(sys$gettim(when)); | |
4652 | u = (U32)SEED_C1 * when[0] + (U32)SEED_C2 * when[1]; | |
4653 | #else | |
4654 | # ifdef HAS_GETTIMEOFDAY | |
4655 | PerlProc_gettimeofday(&when,NULL); | |
4656 | u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec; | |
4657 | # else | |
4658 | (void)time(&when); | |
4659 | u = (U32)SEED_C1 * when; | |
4660 | # endif | |
4661 | #endif | |
4662 | u += SEED_C3 * (U32)PerlProc_getpid(); | |
4663 | u += SEED_C4 * (U32)PTR2UV(PL_stack_sp); | |
4664 | #ifndef PLAN9 /* XXX Plan9 assembler chokes on this; fix needed */ | |
4665 | u += SEED_C5 * (U32)PTR2UV(&when); | |
4666 | #endif | |
4667 | return u; | |
4668 | } | |
4669 | ||
bed60192 | 4670 | UV |
a783c5f4 | 4671 | Perl_get_hash_seed(pTHX) |
bed60192 | 4672 | { |
e1ec3a88 | 4673 | const char *s = PerlEnv_getenv("PERL_HASH_SEED"); |
bed60192 JH |
4674 | UV myseed = 0; |
4675 | ||
4676 | if (s) | |
4677 | while (isSPACE(*s)) s++; | |
4678 | if (s && isDIGIT(*s)) | |
4679 | myseed = (UV)Atoul(s); | |
4680 | else | |
4681 | #ifdef USE_HASH_SEED_EXPLICIT | |
4682 | if (s) | |
4683 | #endif | |
4684 | { | |
4685 | /* Compute a random seed */ | |
4686 | (void)seedDrand01((Rand_seed_t)seed()); | |
bed60192 JH |
4687 | myseed = (UV)(Drand01() * (NV)UV_MAX); |
4688 | #if RANDBITS < (UVSIZE * 8) | |
4689 | /* Since there are not enough randbits to to reach all | |
4690 | * the bits of a UV, the low bits might need extra | |
4691 | * help. Sum in another random number that will | |
4692 | * fill in the low bits. */ | |
4693 | myseed += | |
4694 | (UV)(Drand01() * (NV)((1 << ((UVSIZE * 8 - RANDBITS))) - 1)); | |
4695 | #endif /* RANDBITS < (UVSIZE * 8) */ | |
6cfd5ea7 JH |
4696 | if (myseed == 0) { /* Superparanoia. */ |
4697 | myseed = (UV)(Drand01() * (NV)UV_MAX); /* One more chance. */ | |
4698 | if (myseed == 0) | |
4699 | Perl_croak(aTHX_ "Your random numbers are not that random"); | |
4700 | } | |
bed60192 | 4701 | } |
008fb0c0 | 4702 | PL_rehash_seed_set = TRUE; |
bed60192 JH |
4703 | |
4704 | return myseed; | |
4705 | } | |
27da23d5 JH |
4706 | |
4707 | #ifdef PERL_GLOBAL_STRUCT | |
4708 | ||
4709 | struct perl_vars * | |
4710 | Perl_init_global_struct(pTHX) | |
4711 | { | |
4712 | struct perl_vars *plvarsp = NULL; | |
4713 | #ifdef PERL_GLOBAL_STRUCT | |
4714 | # define PERL_GLOBAL_STRUCT_INIT | |
4715 | # include "opcode.h" /* the ppaddr and check */ | |
4716 | IV nppaddr = sizeof(Gppaddr)/sizeof(Perl_ppaddr_t); | |
4717 | IV ncheck = sizeof(Gcheck) /sizeof(Perl_check_t); | |
4718 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE | |
4719 | /* PerlMem_malloc() because can't use even safesysmalloc() this early. */ | |
4720 | plvarsp = (struct perl_vars*)PerlMem_malloc(sizeof(struct perl_vars)); | |
4721 | if (!plvarsp) | |
4722 | exit(1); | |
4723 | # else | |
4724 | plvarsp = PL_VarsPtr; | |
4725 | # endif /* PERL_GLOBAL_STRUCT_PRIVATE */ | |
aadb217d JH |
4726 | # undef PERLVAR |
4727 | # undef PERLVARA | |
4728 | # undef PERLVARI | |
4729 | # undef PERLVARIC | |
4730 | # undef PERLVARISC | |
27da23d5 JH |
4731 | # define PERLVAR(var,type) /**/ |
4732 | # define PERLVARA(var,n,type) /**/ | |
4733 | # define PERLVARI(var,type,init) plvarsp->var = init; | |
4734 | # define PERLVARIC(var,type,init) plvarsp->var = init; | |
4735 | # define PERLVARISC(var,init) Copy(init, plvarsp->var, sizeof(init), char); | |
4736 | # include "perlvars.h" | |
4737 | # undef PERLVAR | |
4738 | # undef PERLVARA | |
4739 | # undef PERLVARI | |
4740 | # undef PERLVARIC | |
4741 | # undef PERLVARISC | |
4742 | # ifdef PERL_GLOBAL_STRUCT | |
4743 | plvarsp->Gppaddr = PerlMem_malloc(nppaddr * sizeof(Perl_ppaddr_t)); | |
4744 | if (!plvarsp->Gppaddr) | |
4745 | exit(1); | |
4746 | plvarsp->Gcheck = PerlMem_malloc(ncheck * sizeof(Perl_check_t)); | |
4747 | if (!plvarsp->Gcheck) | |
4748 | exit(1); | |
4749 | Copy(Gppaddr, plvarsp->Gppaddr, nppaddr, Perl_ppaddr_t); | |
4750 | Copy(Gcheck, plvarsp->Gcheck, ncheck, Perl_check_t); | |
4751 | # endif | |
4752 | # ifdef PERL_SET_VARS | |
4753 | PERL_SET_VARS(plvarsp); | |
4754 | # endif | |
4755 | # undef PERL_GLOBAL_STRUCT_INIT | |
4756 | #endif | |
4757 | return plvarsp; | |
4758 | } | |
4759 | ||
4760 | #endif /* PERL_GLOBAL_STRUCT */ | |
4761 | ||
4762 | #ifdef PERL_GLOBAL_STRUCT | |
4763 | ||
4764 | void | |
4765 | Perl_free_global_struct(pTHX_ struct perl_vars *plvarsp) | |
4766 | { | |
4767 | #ifdef PERL_GLOBAL_STRUCT | |
4768 | # ifdef PERL_UNSET_VARS | |
4769 | PERL_UNSET_VARS(plvarsp); | |
4770 | # endif | |
4771 | free(plvarsp->Gppaddr); | |
4772 | free(plvarsp->Gcheck); | |
4773 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE | |
4774 | free(plvarsp); | |
4775 | # endif | |
4776 | #endif | |
4777 | } | |
4778 | ||
4779 | #endif /* PERL_GLOBAL_STRUCT */ | |
4780 |