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 | { |
155aba94 | 144 | #ifdef PERL_IMPLICIT_SYS |
54aff467 | 145 | dTHX; |
155aba94 | 146 | #endif |
97835f67 | 147 | DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++)); |
378cc40b | 148 | if (where) { |
de3bb511 | 149 | /*SUPPRESS 701*/ |
6ad3d225 | 150 | PerlMem_free(where); |
378cc40b | 151 | } |
8d063cd8 LW |
152 | } |
153 | ||
f2517201 | 154 | /* safe version of system's calloc() */ |
1050c9ca | 155 | |
bd4080b3 | 156 | Malloc_t |
4f63d024 | 157 | Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size) |
1050c9ca | 158 | { |
54aff467 | 159 | dTHX; |
bd4080b3 | 160 | Malloc_t ptr; |
1050c9ca | 161 | |
55497cff | 162 | #ifdef HAS_64K_LIMIT |
5f05dabc | 163 | if (size * count > 0xffff) { |
bf49b057 | 164 | PerlIO_printf(Perl_error_log, |
5f05dabc | 165 | "Allocation too large: %lx\n", size * count) FLUSH; |
54aff467 | 166 | my_exit(1); |
5f05dabc | 167 | } |
55497cff | 168 | #endif /* HAS_64K_LIMIT */ |
1050c9ca | 169 | #ifdef DEBUGGING |
170 | if ((long)size < 0 || (long)count < 0) | |
4f63d024 | 171 | Perl_croak_nocontext("panic: calloc"); |
1050c9ca | 172 | #endif |
0b7c1c42 | 173 | size *= count; |
12ae5dfc | 174 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
da927450 | 175 | PERL_ALLOC_CHECK(ptr); |
97835f67 | 176 | 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 | 177 | if (ptr != Nullch) { |
178 | memset((void*)ptr, 0, size); | |
179 | return ptr; | |
180 | } | |
3280af22 | 181 | else if (PL_nomemok) |
1050c9ca | 182 | return Nullch; |
183 | else { | |
e0767201 GA |
184 | /* Can't use PerlIO to write as it allocates memory */ |
185 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
186 | PL_no_mem, strlen(PL_no_mem)); | |
54aff467 | 187 | my_exit(1); |
4e35701f | 188 | return Nullch; |
1050c9ca | 189 | } |
190 | /*NOTREACHED*/ | |
191 | } | |
192 | ||
cae6d0e5 GS |
193 | /* These must be defined when not using Perl's malloc for binary |
194 | * compatibility */ | |
195 | ||
196 | #ifndef MYMALLOC | |
197 | ||
198 | Malloc_t Perl_malloc (MEM_SIZE nbytes) | |
199 | { | |
200 | dTHXs; | |
077a72a9 | 201 | return (Malloc_t)PerlMem_malloc(nbytes); |
cae6d0e5 GS |
202 | } |
203 | ||
204 | Malloc_t Perl_calloc (MEM_SIZE elements, MEM_SIZE size) | |
205 | { | |
206 | dTHXs; | |
077a72a9 | 207 | return (Malloc_t)PerlMem_calloc(elements, size); |
cae6d0e5 GS |
208 | } |
209 | ||
210 | Malloc_t Perl_realloc (Malloc_t where, MEM_SIZE nbytes) | |
211 | { | |
212 | dTHXs; | |
077a72a9 | 213 | return (Malloc_t)PerlMem_realloc(where, nbytes); |
cae6d0e5 GS |
214 | } |
215 | ||
216 | Free_t Perl_mfree (Malloc_t where) | |
217 | { | |
218 | dTHXs; | |
219 | PerlMem_free(where); | |
220 | } | |
221 | ||
222 | #endif | |
223 | ||
8d063cd8 LW |
224 | /* copy a string up to some (non-backslashed) delimiter, if any */ |
225 | ||
226 | char * | |
864dbfa3 | 227 | Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen) |
8d063cd8 | 228 | { |
fc36a67e | 229 | register I32 tolen; |
230 | for (tolen = 0; from < fromend; from++, tolen++) { | |
378cc40b LW |
231 | if (*from == '\\') { |
232 | if (from[1] == delim) | |
233 | from++; | |
fc36a67e | 234 | else { |
235 | if (to < toend) | |
236 | *to++ = *from; | |
237 | tolen++; | |
238 | from++; | |
239 | } | |
378cc40b | 240 | } |
bedebaa5 | 241 | else if (*from == delim) |
8d063cd8 | 242 | break; |
fc36a67e | 243 | if (to < toend) |
244 | *to++ = *from; | |
8d063cd8 | 245 | } |
bedebaa5 CS |
246 | if (to < toend) |
247 | *to = '\0'; | |
fc36a67e | 248 | *retlen = tolen; |
8d063cd8 LW |
249 | return from; |
250 | } | |
251 | ||
252 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 253 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
254 | |
255 | char * | |
864dbfa3 | 256 | Perl_instr(pTHX_ register const char *big, register const char *little) |
378cc40b | 257 | { |
08105a92 | 258 | register const char *s, *x; |
79072805 | 259 | register I32 first; |
378cc40b | 260 | |
a687059c | 261 | if (!little) |
08105a92 | 262 | return (char*)big; |
a687059c | 263 | first = *little++; |
378cc40b | 264 | if (!first) |
08105a92 | 265 | return (char*)big; |
378cc40b LW |
266 | while (*big) { |
267 | if (*big++ != first) | |
268 | continue; | |
269 | for (x=big,s=little; *s; /**/ ) { | |
270 | if (!*x) | |
271 | return Nullch; | |
272 | if (*s++ != *x++) { | |
273 | s--; | |
274 | break; | |
275 | } | |
276 | } | |
277 | if (!*s) | |
08105a92 | 278 | return (char*)(big-1); |
378cc40b LW |
279 | } |
280 | return Nullch; | |
281 | } | |
8d063cd8 | 282 | |
a687059c LW |
283 | /* same as instr but allow embedded nulls */ |
284 | ||
285 | char * | |
864dbfa3 | 286 | Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend) |
8d063cd8 | 287 | { |
08105a92 | 288 | register const char *s, *x; |
79072805 | 289 | register I32 first = *little; |
08105a92 | 290 | register const char *littleend = lend; |
378cc40b | 291 | |
a0d0e21e | 292 | if (!first && little >= littleend) |
08105a92 | 293 | return (char*)big; |
de3bb511 LW |
294 | if (bigend - big < littleend - little) |
295 | return Nullch; | |
a687059c LW |
296 | bigend -= littleend - little++; |
297 | while (big <= bigend) { | |
298 | if (*big++ != first) | |
299 | continue; | |
300 | for (x=big,s=little; s < littleend; /**/ ) { | |
301 | if (*s++ != *x++) { | |
302 | s--; | |
303 | break; | |
304 | } | |
305 | } | |
306 | if (s >= littleend) | |
08105a92 | 307 | return (char*)(big-1); |
378cc40b | 308 | } |
a687059c LW |
309 | return Nullch; |
310 | } | |
311 | ||
312 | /* reverse of the above--find last substring */ | |
313 | ||
314 | char * | |
864dbfa3 | 315 | Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend) |
a687059c | 316 | { |
08105a92 GS |
317 | register const char *bigbeg; |
318 | register const char *s, *x; | |
79072805 | 319 | register I32 first = *little; |
08105a92 | 320 | register const char *littleend = lend; |
a687059c | 321 | |
a0d0e21e | 322 | if (!first && little >= littleend) |
08105a92 | 323 | return (char*)bigend; |
a687059c LW |
324 | bigbeg = big; |
325 | big = bigend - (littleend - little++); | |
326 | while (big >= bigbeg) { | |
327 | if (*big-- != first) | |
328 | continue; | |
329 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
330 | if (*s++ != *x++) { | |
331 | s--; | |
332 | break; | |
333 | } | |
334 | } | |
335 | if (s >= littleend) | |
08105a92 | 336 | return (char*)(big+1); |
378cc40b | 337 | } |
a687059c | 338 | return Nullch; |
378cc40b | 339 | } |
a687059c | 340 | |
cf93c79d IZ |
341 | #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/ |
342 | ||
343 | /* As a space optimization, we do not compile tables for strings of length | |
344 | 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are | |
345 | special-cased in fbm_instr(). | |
346 | ||
347 | If FBMcf_TAIL, the table is created as if the string has a trailing \n. */ | |
348 | ||
954c1994 | 349 | /* |
ccfc67b7 JH |
350 | =head1 Miscellaneous Functions |
351 | ||
954c1994 GS |
352 | =for apidoc fbm_compile |
353 | ||
354 | Analyses the string in order to make fast searches on it using fbm_instr() | |
355 | -- the Boyer-Moore algorithm. | |
356 | ||
357 | =cut | |
358 | */ | |
359 | ||
378cc40b | 360 | void |
7506f9c3 | 361 | Perl_fbm_compile(pTHX_ SV *sv, U32 flags) |
378cc40b | 362 | { |
942e002e GS |
363 | register U8 *s; |
364 | register U8 *table; | |
79072805 | 365 | register U32 i; |
0b71040e | 366 | STRLEN len; |
79072805 LW |
367 | I32 rarest = 0; |
368 | U32 frequency = 256; | |
369 | ||
c517dc2b JH |
370 | if (flags & FBMcf_TAIL) { |
371 | MAGIC *mg = SvUTF8(sv) && SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : NULL; | |
cf93c79d | 372 | sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */ |
c517dc2b JH |
373 | if (mg && mg->mg_len >= 0) |
374 | mg->mg_len++; | |
375 | } | |
942e002e | 376 | s = (U8*)SvPV_force(sv, len); |
07f14f54 | 377 | (void)SvUPGRADE(sv, SVt_PVBM); |
d1be9408 | 378 | if (len == 0) /* TAIL might be on a zero-length string. */ |
cf93c79d | 379 | return; |
02128f11 | 380 | if (len > 2) { |
7506f9c3 | 381 | U8 mlen; |
cf93c79d IZ |
382 | unsigned char *sb; |
383 | ||
7506f9c3 | 384 | if (len > 255) |
cf93c79d | 385 | mlen = 255; |
7506f9c3 GS |
386 | else |
387 | mlen = (U8)len; | |
388 | Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET); | |
cf93c79d | 389 | table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET); |
7506f9c3 GS |
390 | s = table - 1 - FBM_TABLE_OFFSET; /* last char */ |
391 | memset((void*)table, mlen, 256); | |
392 | table[-1] = (U8)flags; | |
02128f11 | 393 | i = 0; |
7506f9c3 | 394 | sb = s - mlen + 1; /* first char (maybe) */ |
cf93c79d IZ |
395 | while (s >= sb) { |
396 | if (table[*s] == mlen) | |
7506f9c3 | 397 | table[*s] = (U8)i; |
cf93c79d IZ |
398 | s--, i++; |
399 | } | |
378cc40b | 400 | } |
14befaf4 | 401 | sv_magic(sv, Nullsv, PERL_MAGIC_bm, Nullch, 0); /* deep magic */ |
79072805 | 402 | SvVALID_on(sv); |
378cc40b | 403 | |
463ee0b2 | 404 | s = (unsigned char*)(SvPVX(sv)); /* deeper magic */ |
bbce6d69 | 405 | for (i = 0; i < len; i++) { |
22c35a8c | 406 | if (PL_freq[s[i]] < frequency) { |
bbce6d69 | 407 | rarest = i; |
22c35a8c | 408 | frequency = PL_freq[s[i]]; |
378cc40b LW |
409 | } |
410 | } | |
79072805 | 411 | BmRARE(sv) = s[rarest]; |
eb160463 | 412 | BmPREVIOUS(sv) = (U16)rarest; |
cf93c79d IZ |
413 | BmUSEFUL(sv) = 100; /* Initial value */ |
414 | if (flags & FBMcf_TAIL) | |
415 | SvTAIL_on(sv); | |
7506f9c3 GS |
416 | DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n", |
417 | BmRARE(sv),BmPREVIOUS(sv))); | |
378cc40b LW |
418 | } |
419 | ||
cf93c79d IZ |
420 | /* If SvTAIL(littlestr), it has a fake '\n' at end. */ |
421 | /* If SvTAIL is actually due to \Z or \z, this gives false positives | |
422 | if multiline */ | |
423 | ||
954c1994 GS |
424 | /* |
425 | =for apidoc fbm_instr | |
426 | ||
427 | Returns the location of the SV in the string delimited by C<str> and | |
428 | C<strend>. It returns C<Nullch> if the string can't be found. The C<sv> | |
429 | does not have to be fbm_compiled, but the search will not be as fast | |
430 | then. | |
431 | ||
432 | =cut | |
433 | */ | |
434 | ||
378cc40b | 435 | char * |
864dbfa3 | 436 | Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags) |
378cc40b | 437 | { |
a687059c | 438 | register unsigned char *s; |
cf93c79d IZ |
439 | STRLEN l; |
440 | register unsigned char *little = (unsigned char *)SvPV(littlestr,l); | |
441 | register STRLEN littlelen = l; | |
442 | register I32 multiline = flags & FBMrf_MULTILINE; | |
443 | ||
eb160463 | 444 | if ((STRLEN)(bigend - big) < littlelen) { |
a1d180c4 | 445 | if ( SvTAIL(littlestr) |
eb160463 | 446 | && ((STRLEN)(bigend - big) == littlelen - 1) |
a1d180c4 | 447 | && (littlelen == 1 |
12ae5dfc JH |
448 | || (*big == *little && |
449 | memEQ((char *)big, (char *)little, littlelen - 1)))) | |
cf93c79d IZ |
450 | return (char*)big; |
451 | return Nullch; | |
452 | } | |
378cc40b | 453 | |
cf93c79d | 454 | if (littlelen <= 2) { /* Special-cased */ |
cf93c79d IZ |
455 | |
456 | if (littlelen == 1) { | |
457 | if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */ | |
458 | /* Know that bigend != big. */ | |
459 | if (bigend[-1] == '\n') | |
460 | return (char *)(bigend - 1); | |
461 | return (char *) bigend; | |
462 | } | |
463 | s = big; | |
464 | while (s < bigend) { | |
465 | if (*s == *little) | |
466 | return (char *)s; | |
467 | s++; | |
468 | } | |
469 | if (SvTAIL(littlestr)) | |
470 | return (char *) bigend; | |
471 | return Nullch; | |
472 | } | |
473 | if (!littlelen) | |
474 | return (char*)big; /* Cannot be SvTAIL! */ | |
475 | ||
476 | /* littlelen is 2 */ | |
477 | if (SvTAIL(littlestr) && !multiline) { | |
478 | if (bigend[-1] == '\n' && bigend[-2] == *little) | |
479 | return (char*)bigend - 2; | |
480 | if (bigend[-1] == *little) | |
481 | return (char*)bigend - 1; | |
482 | return Nullch; | |
483 | } | |
484 | { | |
485 | /* This should be better than FBM if c1 == c2, and almost | |
486 | as good otherwise: maybe better since we do less indirection. | |
487 | And we save a lot of memory by caching no table. */ | |
488 | register unsigned char c1 = little[0]; | |
489 | register unsigned char c2 = little[1]; | |
490 | ||
491 | s = big + 1; | |
492 | bigend--; | |
493 | if (c1 != c2) { | |
494 | while (s <= bigend) { | |
495 | if (s[0] == c2) { | |
496 | if (s[-1] == c1) | |
497 | return (char*)s - 1; | |
498 | s += 2; | |
499 | continue; | |
3fe6f2dc | 500 | } |
cf93c79d IZ |
501 | next_chars: |
502 | if (s[0] == c1) { | |
503 | if (s == bigend) | |
504 | goto check_1char_anchor; | |
505 | if (s[1] == c2) | |
506 | return (char*)s; | |
507 | else { | |
508 | s++; | |
509 | goto next_chars; | |
510 | } | |
511 | } | |
512 | else | |
513 | s += 2; | |
514 | } | |
515 | goto check_1char_anchor; | |
516 | } | |
517 | /* Now c1 == c2 */ | |
518 | while (s <= bigend) { | |
519 | if (s[0] == c1) { | |
520 | if (s[-1] == c1) | |
521 | return (char*)s - 1; | |
522 | if (s == bigend) | |
523 | goto check_1char_anchor; | |
524 | if (s[1] == c1) | |
525 | return (char*)s; | |
526 | s += 3; | |
02128f11 | 527 | } |
c277df42 | 528 | else |
cf93c79d | 529 | s += 2; |
c277df42 | 530 | } |
c277df42 | 531 | } |
cf93c79d IZ |
532 | check_1char_anchor: /* One char and anchor! */ |
533 | if (SvTAIL(littlestr) && (*bigend == *little)) | |
534 | return (char *)bigend; /* bigend is already decremented. */ | |
535 | return Nullch; | |
d48672a2 | 536 | } |
cf93c79d | 537 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ |
bbce6d69 | 538 | s = bigend - littlelen; |
a1d180c4 | 539 | if (s >= big && bigend[-1] == '\n' && *s == *little |
cf93c79d IZ |
540 | /* Automatically of length > 2 */ |
541 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
7506f9c3 | 542 | { |
bbce6d69 | 543 | return (char*)s; /* how sweet it is */ |
7506f9c3 GS |
544 | } |
545 | if (s[1] == *little | |
546 | && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2)) | |
547 | { | |
cf93c79d | 548 | return (char*)s + 1; /* how sweet it is */ |
7506f9c3 | 549 | } |
02128f11 IZ |
550 | return Nullch; |
551 | } | |
cf93c79d IZ |
552 | if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) { |
553 | char *b = ninstr((char*)big,(char*)bigend, | |
554 | (char*)little, (char*)little + littlelen); | |
555 | ||
556 | if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */ | |
557 | /* Chop \n from littlestr: */ | |
558 | s = bigend - littlelen + 1; | |
7506f9c3 GS |
559 | if (*s == *little |
560 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
561 | { | |
3fe6f2dc | 562 | return (char*)s; |
7506f9c3 | 563 | } |
cf93c79d | 564 | return Nullch; |
a687059c | 565 | } |
cf93c79d | 566 | return b; |
a687059c | 567 | } |
a1d180c4 | 568 | |
cf93c79d IZ |
569 | { /* Do actual FBM. */ |
570 | register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET; | |
571 | register unsigned char *oldlittle; | |
572 | ||
eb160463 | 573 | if (littlelen > (STRLEN)(bigend - big)) |
cf93c79d IZ |
574 | return Nullch; |
575 | --littlelen; /* Last char found by table lookup */ | |
576 | ||
577 | s = big + littlelen; | |
578 | little += littlelen; /* last char */ | |
579 | oldlittle = little; | |
580 | if (s < bigend) { | |
581 | register I32 tmp; | |
582 | ||
583 | top2: | |
584 | /*SUPPRESS 560*/ | |
7506f9c3 | 585 | if ((tmp = table[*s])) { |
cf93c79d | 586 | if ((s += tmp) < bigend) |
62b28dd9 | 587 | goto top2; |
cf93c79d IZ |
588 | goto check_end; |
589 | } | |
590 | else { /* less expensive than calling strncmp() */ | |
591 | register unsigned char *olds = s; | |
592 | ||
593 | tmp = littlelen; | |
594 | ||
595 | while (tmp--) { | |
596 | if (*--s == *--little) | |
597 | continue; | |
cf93c79d IZ |
598 | s = olds + 1; /* here we pay the price for failure */ |
599 | little = oldlittle; | |
600 | if (s < bigend) /* fake up continue to outer loop */ | |
601 | goto top2; | |
602 | goto check_end; | |
603 | } | |
604 | return (char *)s; | |
a687059c | 605 | } |
378cc40b | 606 | } |
cf93c79d IZ |
607 | check_end: |
608 | if ( s == bigend && (table[-1] & FBMcf_TAIL) | |
12ae5dfc JH |
609 | && memEQ((char *)(bigend - littlelen), |
610 | (char *)(oldlittle - littlelen), littlelen) ) | |
cf93c79d IZ |
611 | return (char*)bigend - littlelen; |
612 | return Nullch; | |
378cc40b | 613 | } |
378cc40b LW |
614 | } |
615 | ||
c277df42 IZ |
616 | /* start_shift, end_shift are positive quantities which give offsets |
617 | of ends of some substring of bigstr. | |
fb8eeed8 | 618 | If `last' we want the last occurrence. |
c277df42 | 619 | old_posp is the way of communication between consequent calls if |
a1d180c4 | 620 | the next call needs to find the . |
c277df42 | 621 | The initial *old_posp should be -1. |
cf93c79d IZ |
622 | |
623 | Note that we take into account SvTAIL, so one can get extra | |
624 | optimizations if _ALL flag is set. | |
c277df42 IZ |
625 | */ |
626 | ||
cf93c79d | 627 | /* If SvTAIL is actually due to \Z or \z, this gives false positives |
26fa51c3 | 628 | if PL_multiline. In fact if !PL_multiline the authoritative answer |
cf93c79d IZ |
629 | is not supported yet. */ |
630 | ||
378cc40b | 631 | char * |
864dbfa3 | 632 | Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last) |
378cc40b | 633 | { |
a687059c LW |
634 | register unsigned char *s, *x; |
635 | register unsigned char *big; | |
79072805 LW |
636 | register I32 pos; |
637 | register I32 previous; | |
638 | register I32 first; | |
a687059c | 639 | register unsigned char *little; |
c277df42 | 640 | register I32 stop_pos; |
a687059c | 641 | register unsigned char *littleend; |
c277df42 | 642 | I32 found = 0; |
378cc40b | 643 | |
c277df42 | 644 | if (*old_posp == -1 |
3280af22 | 645 | ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0 |
cf93c79d IZ |
646 | : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) { |
647 | cant_find: | |
a1d180c4 | 648 | if ( BmRARE(littlestr) == '\n' |
cf93c79d IZ |
649 | && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) { |
650 | little = (unsigned char *)(SvPVX(littlestr)); | |
651 | littleend = little + SvCUR(littlestr); | |
652 | first = *little++; | |
653 | goto check_tail; | |
654 | } | |
378cc40b | 655 | return Nullch; |
cf93c79d IZ |
656 | } |
657 | ||
463ee0b2 | 658 | little = (unsigned char *)(SvPVX(littlestr)); |
79072805 | 659 | littleend = little + SvCUR(littlestr); |
378cc40b | 660 | first = *little++; |
c277df42 | 661 | /* The value of pos we can start at: */ |
79072805 | 662 | previous = BmPREVIOUS(littlestr); |
463ee0b2 | 663 | big = (unsigned char *)(SvPVX(bigstr)); |
c277df42 IZ |
664 | /* The value of pos we can stop at: */ |
665 | stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous); | |
cf93c79d | 666 | if (previous + start_shift > stop_pos) { |
0fe87f7c HS |
667 | /* |
668 | stop_pos does not include SvTAIL in the count, so this check is incorrect | |
669 | (I think) - see [ID 20010618.006] and t/op/study.t. HVDS 2001/06/19 | |
670 | */ | |
671 | #if 0 | |
cf93c79d IZ |
672 | if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */ |
673 | goto check_tail; | |
0fe87f7c | 674 | #endif |
cf93c79d IZ |
675 | return Nullch; |
676 | } | |
c277df42 | 677 | while (pos < previous + start_shift) { |
3280af22 | 678 | if (!(pos += PL_screamnext[pos])) |
cf93c79d | 679 | goto cant_find; |
378cc40b | 680 | } |
de3bb511 | 681 | big -= previous; |
bbce6d69 | 682 | do { |
ef64f398 | 683 | if (pos >= stop_pos) break; |
bbce6d69 | 684 | if (big[pos] != first) |
685 | continue; | |
686 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
bbce6d69 | 687 | if (*s++ != *x++) { |
688 | s--; | |
689 | break; | |
378cc40b | 690 | } |
bbce6d69 | 691 | } |
c277df42 IZ |
692 | if (s == littleend) { |
693 | *old_posp = pos; | |
694 | if (!last) return (char *)(big+pos); | |
695 | found = 1; | |
696 | } | |
3280af22 | 697 | } while ( pos += PL_screamnext[pos] ); |
a1d180c4 | 698 | if (last && found) |
cf93c79d | 699 | return (char *)(big+(*old_posp)); |
cf93c79d IZ |
700 | check_tail: |
701 | if (!SvTAIL(littlestr) || (end_shift > 0)) | |
702 | return Nullch; | |
703 | /* Ignore the trailing "\n". This code is not microoptimized */ | |
704 | big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr)); | |
705 | stop_pos = littleend - little; /* Actual littlestr len */ | |
706 | if (stop_pos == 0) | |
707 | return (char*)big; | |
708 | big -= stop_pos; | |
709 | if (*big == first | |
12ae5dfc JH |
710 | && ((stop_pos == 1) || |
711 | memEQ((char *)(big + 1), (char *)little, stop_pos - 1))) | |
cf93c79d IZ |
712 | return (char*)big; |
713 | return Nullch; | |
8d063cd8 LW |
714 | } |
715 | ||
79072805 | 716 | I32 |
864dbfa3 | 717 | Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len) |
79072805 | 718 | { |
bbce6d69 | 719 | register U8 *a = (U8 *)s1; |
720 | register U8 *b = (U8 *)s2; | |
79072805 | 721 | while (len--) { |
22c35a8c | 722 | if (*a != *b && *a != PL_fold[*b]) |
bbce6d69 | 723 | return 1; |
724 | a++,b++; | |
725 | } | |
726 | return 0; | |
727 | } | |
728 | ||
729 | I32 | |
864dbfa3 | 730 | Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len) |
bbce6d69 | 731 | { |
732 | register U8 *a = (U8 *)s1; | |
733 | register U8 *b = (U8 *)s2; | |
734 | while (len--) { | |
22c35a8c | 735 | if (*a != *b && *a != PL_fold_locale[*b]) |
bbce6d69 | 736 | return 1; |
737 | a++,b++; | |
79072805 LW |
738 | } |
739 | return 0; | |
740 | } | |
741 | ||
8d063cd8 LW |
742 | /* copy a string to a safe spot */ |
743 | ||
954c1994 | 744 | /* |
ccfc67b7 JH |
745 | =head1 Memory Management |
746 | ||
954c1994 GS |
747 | =for apidoc savepv |
748 | ||
61a925ed AMS |
749 | Perl's version of C<strdup()>. Returns a pointer to a newly allocated |
750 | string which is a duplicate of C<pv>. The size of the string is | |
751 | determined by C<strlen()>. The memory allocated for the new string can | |
752 | be freed with the C<Safefree()> function. | |
954c1994 GS |
753 | |
754 | =cut | |
755 | */ | |
756 | ||
8d063cd8 | 757 | char * |
efdfce31 | 758 | Perl_savepv(pTHX_ const char *pv) |
8d063cd8 | 759 | { |
e90e2364 | 760 | register char *newaddr; |
fbbafa6d RGS |
761 | #ifdef PERL_MALLOC_WRAP |
762 | STRLEN pvlen; | |
763 | #endif | |
e90e2364 NC |
764 | if (!pv) |
765 | return Nullch; | |
766 | ||
fbbafa6d RGS |
767 | #ifdef PERL_MALLOC_WRAP |
768 | pvlen = strlen(pv)+1; | |
769 | New(902,newaddr,pvlen,char); | |
770 | #else | |
e90e2364 | 771 | New(902,newaddr,strlen(pv)+1,char); |
fbbafa6d | 772 | #endif |
e90e2364 | 773 | return strcpy(newaddr,pv); |
8d063cd8 LW |
774 | } |
775 | ||
a687059c LW |
776 | /* same thing but with a known length */ |
777 | ||
954c1994 GS |
778 | /* |
779 | =for apidoc savepvn | |
780 | ||
61a925ed AMS |
781 | Perl's version of what C<strndup()> would be if it existed. Returns a |
782 | pointer to a newly allocated string which is a duplicate of the first | |
783 | C<len> bytes from C<pv>. The memory allocated for the new string can be | |
784 | freed with the C<Safefree()> function. | |
954c1994 GS |
785 | |
786 | =cut | |
787 | */ | |
788 | ||
a687059c | 789 | char * |
efdfce31 | 790 | Perl_savepvn(pTHX_ const char *pv, register I32 len) |
a687059c LW |
791 | { |
792 | register char *newaddr; | |
793 | ||
794 | New(903,newaddr,len+1,char); | |
92110913 | 795 | /* Give a meaning to NULL pointer mainly for the use in sv_magic() */ |
efdfce31 | 796 | if (pv) { |
e90e2364 NC |
797 | /* might not be null terminated */ |
798 | newaddr[len] = '\0'; | |
799 | return CopyD(pv,newaddr,len,char); | |
92110913 NIS |
800 | } |
801 | else { | |
e90e2364 | 802 | return ZeroD(newaddr,len+1,char); |
92110913 | 803 | } |
a687059c LW |
804 | } |
805 | ||
05ec9bb3 NIS |
806 | /* |
807 | =for apidoc savesharedpv | |
808 | ||
61a925ed AMS |
809 | A version of C<savepv()> which allocates the duplicate string in memory |
810 | which is shared between threads. | |
05ec9bb3 NIS |
811 | |
812 | =cut | |
813 | */ | |
814 | char * | |
efdfce31 | 815 | Perl_savesharedpv(pTHX_ const char *pv) |
05ec9bb3 | 816 | { |
e90e2364 NC |
817 | register char *newaddr; |
818 | if (!pv) | |
819 | return Nullch; | |
820 | ||
821 | newaddr = (char*)PerlMemShared_malloc(strlen(pv)+1); | |
822 | if (!newaddr) { | |
823 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
824 | PL_no_mem, strlen(PL_no_mem)); | |
825 | my_exit(1); | |
05ec9bb3 | 826 | } |
e90e2364 | 827 | return strcpy(newaddr,pv); |
05ec9bb3 NIS |
828 | } |
829 | ||
2e0de35c NC |
830 | /* |
831 | =for apidoc savesvpv | |
832 | ||
6832267f | 833 | A version of C<savepv()>/C<savepvn()> which gets the string to duplicate from |
2e0de35c NC |
834 | the passed in SV using C<SvPV()> |
835 | ||
836 | =cut | |
837 | */ | |
838 | ||
839 | char * | |
840 | Perl_savesvpv(pTHX_ SV *sv) | |
841 | { | |
842 | STRLEN len; | |
843 | const char *pv = SvPV(sv, len); | |
844 | register char *newaddr; | |
845 | ||
26866f99 NC |
846 | ++len; |
847 | New(903,newaddr,len,char); | |
2e0de35c NC |
848 | return CopyD(pv,newaddr,len,char); |
849 | } | |
05ec9bb3 NIS |
850 | |
851 | ||
cea2e8a9 | 852 | /* the SV for Perl_form() and mess() is not kept in an arena */ |
fc36a67e | 853 | |
76e3520e | 854 | STATIC SV * |
cea2e8a9 | 855 | S_mess_alloc(pTHX) |
fc36a67e | 856 | { |
857 | SV *sv; | |
858 | XPVMG *any; | |
859 | ||
e72dc28c GS |
860 | if (!PL_dirty) |
861 | return sv_2mortal(newSVpvn("",0)); | |
862 | ||
0372dbb6 GS |
863 | if (PL_mess_sv) |
864 | return PL_mess_sv; | |
865 | ||
fc36a67e | 866 | /* Create as PVMG now, to avoid any upgrading later */ |
867 | New(905, sv, 1, SV); | |
868 | Newz(905, any, 1, XPVMG); | |
869 | SvFLAGS(sv) = SVt_PVMG; | |
870 | SvANY(sv) = (void*)any; | |
871 | SvREFCNT(sv) = 1 << 30; /* practically infinite */ | |
e72dc28c | 872 | PL_mess_sv = sv; |
fc36a67e | 873 | return sv; |
874 | } | |
875 | ||
c5be433b | 876 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
877 | char * |
878 | Perl_form_nocontext(const char* pat, ...) | |
879 | { | |
880 | dTHX; | |
c5be433b | 881 | char *retval; |
cea2e8a9 GS |
882 | va_list args; |
883 | va_start(args, pat); | |
c5be433b | 884 | retval = vform(pat, &args); |
cea2e8a9 | 885 | va_end(args); |
c5be433b | 886 | return retval; |
cea2e8a9 | 887 | } |
c5be433b | 888 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 | 889 | |
7c9e965c | 890 | /* |
ccfc67b7 | 891 | =head1 Miscellaneous Functions |
7c9e965c JP |
892 | =for apidoc form |
893 | ||
894 | Takes a sprintf-style format pattern and conventional | |
895 | (non-SV) arguments and returns the formatted string. | |
896 | ||
897 | (char *) Perl_form(pTHX_ const char* pat, ...) | |
898 | ||
899 | can be used any place a string (char *) is required: | |
900 | ||
901 | char * s = Perl_form("%d.%d",major,minor); | |
902 | ||
903 | Uses a single private buffer so if you want to format several strings you | |
904 | must explicitly copy the earlier strings away (and free the copies when you | |
905 | are done). | |
906 | ||
907 | =cut | |
908 | */ | |
909 | ||
8990e307 | 910 | char * |
864dbfa3 | 911 | Perl_form(pTHX_ const char* pat, ...) |
8990e307 | 912 | { |
c5be433b | 913 | char *retval; |
46fc3d4c | 914 | va_list args; |
46fc3d4c | 915 | va_start(args, pat); |
c5be433b | 916 | retval = vform(pat, &args); |
46fc3d4c | 917 | va_end(args); |
c5be433b GS |
918 | return retval; |
919 | } | |
920 | ||
921 | char * | |
922 | Perl_vform(pTHX_ const char *pat, va_list *args) | |
923 | { | |
924 | SV *sv = mess_alloc(); | |
925 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
e72dc28c | 926 | return SvPVX(sv); |
46fc3d4c | 927 | } |
a687059c | 928 | |
5a844595 GS |
929 | #if defined(PERL_IMPLICIT_CONTEXT) |
930 | SV * | |
931 | Perl_mess_nocontext(const char *pat, ...) | |
932 | { | |
933 | dTHX; | |
934 | SV *retval; | |
935 | va_list args; | |
936 | va_start(args, pat); | |
937 | retval = vmess(pat, &args); | |
938 | va_end(args); | |
939 | return retval; | |
940 | } | |
941 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
942 | ||
06bf62c7 | 943 | SV * |
5a844595 GS |
944 | Perl_mess(pTHX_ const char *pat, ...) |
945 | { | |
946 | SV *retval; | |
947 | va_list args; | |
948 | va_start(args, pat); | |
949 | retval = vmess(pat, &args); | |
950 | va_end(args); | |
951 | return retval; | |
952 | } | |
953 | ||
ae7d165c PJ |
954 | STATIC COP* |
955 | S_closest_cop(pTHX_ COP *cop, OP *o) | |
956 | { | |
957 | /* Look for PL_op starting from o. cop is the last COP we've seen. */ | |
958 | ||
959 | if (!o || o == PL_op) return cop; | |
960 | ||
961 | if (o->op_flags & OPf_KIDS) { | |
962 | OP *kid; | |
963 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
964 | { | |
965 | COP *new_cop; | |
966 | ||
967 | /* If the OP_NEXTSTATE has been optimised away we can still use it | |
968 | * the get the file and line number. */ | |
969 | ||
970 | if (kid->op_type == OP_NULL && kid->op_targ == OP_NEXTSTATE) | |
971 | cop = (COP *)kid; | |
972 | ||
973 | /* Keep searching, and return when we've found something. */ | |
974 | ||
975 | new_cop = closest_cop(cop, kid); | |
976 | if (new_cop) return new_cop; | |
977 | } | |
978 | } | |
979 | ||
980 | /* Nothing found. */ | |
981 | ||
982 | return 0; | |
983 | } | |
984 | ||
5a844595 GS |
985 | SV * |
986 | Perl_vmess(pTHX_ const char *pat, va_list *args) | |
46fc3d4c | 987 | { |
e72dc28c | 988 | SV *sv = mess_alloc(); |
46fc3d4c | 989 | static char dgd[] = " during global destruction.\n"; |
ae7d165c | 990 | COP *cop; |
46fc3d4c | 991 | |
fc36a67e | 992 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); |
46fc3d4c | 993 | if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') { |
ae7d165c PJ |
994 | |
995 | /* | |
996 | * Try and find the file and line for PL_op. This will usually be | |
997 | * PL_curcop, but it might be a cop that has been optimised away. We | |
998 | * can try to find such a cop by searching through the optree starting | |
999 | * from the sibling of PL_curcop. | |
1000 | */ | |
1001 | ||
1002 | cop = closest_cop(PL_curcop, PL_curcop->op_sibling); | |
1003 | if (!cop) cop = PL_curcop; | |
1004 | ||
1005 | if (CopLINE(cop)) | |
ed094faf | 1006 | Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf, |
3aed30dc | 1007 | OutCopFILE(cop), (IV)CopLINE(cop)); |
2035c5e8 | 1008 | if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) { |
515f54a1 | 1009 | bool line_mode = (RsSIMPLE(PL_rs) && |
7c1e0849 | 1010 | SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n'); |
57def98f | 1011 | Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf, |
edc2eac3 JH |
1012 | PL_last_in_gv == PL_argvgv ? |
1013 | "" : GvNAME(PL_last_in_gv), | |
1014 | line_mode ? "line" : "chunk", | |
1015 | (IV)IoLINES(GvIOp(PL_last_in_gv))); | |
a687059c | 1016 | } |
515f54a1 | 1017 | sv_catpv(sv, PL_dirty ? dgd : ".\n"); |
a687059c | 1018 | } |
06bf62c7 | 1019 | return sv; |
a687059c LW |
1020 | } |
1021 | ||
7ff03255 SG |
1022 | void |
1023 | Perl_write_to_stderr(pTHX_ const char* message, int msglen) | |
1024 | { | |
1025 | IO *io; | |
1026 | MAGIC *mg; | |
1027 | ||
1028 | if (PL_stderrgv && SvREFCNT(PL_stderrgv) | |
1029 | && (io = GvIO(PL_stderrgv)) | |
1030 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
1031 | { | |
1032 | dSP; | |
1033 | ENTER; | |
1034 | SAVETMPS; | |
1035 | ||
1036 | save_re_context(); | |
1037 | SAVESPTR(PL_stderrgv); | |
1038 | PL_stderrgv = Nullgv; | |
1039 | ||
1040 | PUSHSTACKi(PERLSI_MAGIC); | |
1041 | ||
1042 | PUSHMARK(SP); | |
1043 | EXTEND(SP,2); | |
1044 | PUSHs(SvTIED_obj((SV*)io, mg)); | |
1045 | PUSHs(sv_2mortal(newSVpvn(message, msglen))); | |
1046 | PUTBACK; | |
1047 | call_method("PRINT", G_SCALAR); | |
1048 | ||
1049 | POPSTACK; | |
1050 | FREETMPS; | |
1051 | LEAVE; | |
1052 | } | |
1053 | else { | |
1054 | #ifdef USE_SFIO | |
1055 | /* SFIO can really mess with your errno */ | |
1056 | int e = errno; | |
1057 | #endif | |
1058 | PerlIO *serr = Perl_error_log; | |
1059 | ||
1060 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); | |
1061 | (void)PerlIO_flush(serr); | |
1062 | #ifdef USE_SFIO | |
1063 | errno = e; | |
1064 | #endif | |
1065 | } | |
1066 | } | |
1067 | ||
3ab1ac99 NC |
1068 | /* Common code used by vcroak, vdie and vwarner */ |
1069 | ||
1070 | void S_vdie_common(pTHX_ const char *message, STRLEN msglen, I32 utf8); | |
1071 | ||
1072 | char * | |
1073 | S_vdie_croak_common(pTHX_ const char* pat, va_list* args, STRLEN* msglen, | |
1074 | I32* utf8) | |
1075 | { | |
1076 | char *message; | |
1077 | ||
1078 | if (pat) { | |
1079 | SV *msv = vmess(pat, args); | |
1080 | if (PL_errors && SvCUR(PL_errors)) { | |
1081 | sv_catsv(PL_errors, msv); | |
1082 | message = SvPV(PL_errors, *msglen); | |
1083 | SvCUR_set(PL_errors, 0); | |
1084 | } | |
1085 | else | |
1086 | message = SvPV(msv,*msglen); | |
1087 | *utf8 = SvUTF8(msv); | |
1088 | } | |
1089 | else { | |
1090 | message = Nullch; | |
1091 | } | |
1092 | ||
1093 | DEBUG_S(PerlIO_printf(Perl_debug_log, | |
1094 | "%p: die/croak: message = %s\ndiehook = %p\n", | |
1095 | thr, message, PL_diehook)); | |
1096 | if (PL_diehook) { | |
1097 | S_vdie_common(aTHX_ message, *msglen, *utf8); | |
1098 | } | |
1099 | return message; | |
1100 | } | |
1101 | ||
63315e18 NC |
1102 | void |
1103 | S_vdie_common(pTHX_ const char *message, STRLEN msglen, I32 utf8) | |
1104 | { | |
1105 | HV *stash; | |
1106 | GV *gv; | |
1107 | CV *cv; | |
1108 | /* sv_2cv might call Perl_croak() */ | |
1109 | SV *olddiehook = PL_diehook; | |
1110 | ||
1111 | assert(PL_diehook); | |
1112 | ENTER; | |
1113 | SAVESPTR(PL_diehook); | |
1114 | PL_diehook = Nullsv; | |
1115 | cv = sv_2cv(olddiehook, &stash, &gv, 0); | |
1116 | LEAVE; | |
1117 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
1118 | dSP; | |
1119 | SV *msg; | |
1120 | ||
1121 | ENTER; | |
1122 | save_re_context(); | |
1123 | if (message) { | |
1124 | msg = newSVpvn(message, msglen); | |
1125 | SvFLAGS(msg) |= utf8; | |
1126 | SvREADONLY_on(msg); | |
1127 | SAVEFREESV(msg); | |
1128 | } | |
1129 | else { | |
1130 | msg = ERRSV; | |
1131 | } | |
1132 | ||
1133 | PUSHSTACKi(PERLSI_DIEHOOK); | |
1134 | PUSHMARK(SP); | |
1135 | XPUSHs(msg); | |
1136 | PUTBACK; | |
1137 | call_sv((SV*)cv, G_DISCARD); | |
1138 | POPSTACK; | |
1139 | LEAVE; | |
1140 | } | |
1141 | } | |
1142 | ||
c5be433b GS |
1143 | OP * |
1144 | Perl_vdie(pTHX_ const char* pat, va_list *args) | |
36477c24 | 1145 | { |
36477c24 | 1146 | char *message; |
3280af22 | 1147 | int was_in_eval = PL_in_eval; |
06bf62c7 | 1148 | STRLEN msglen; |
ff882698 | 1149 | I32 utf8 = 0; |
36477c24 | 1150 | |
bf49b057 | 1151 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
199100c8 | 1152 | "%p: die: curstack = %p, mainstack = %p\n", |
533c011a | 1153 | thr, PL_curstack, PL_mainstack)); |
36477c24 | 1154 | |
3ab1ac99 | 1155 | message = S_vdie_croak_common(aTHX_ pat, args, &msglen, &utf8); |
36477c24 | 1156 | |
06bf62c7 | 1157 | PL_restartop = die_where(message, msglen); |
ff882698 | 1158 | SvFLAGS(ERRSV) |= utf8; |
bf49b057 | 1159 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
7c06b590 | 1160 | "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n", |
533c011a | 1161 | thr, PL_restartop, was_in_eval, PL_top_env)); |
3280af22 | 1162 | if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev) |
6224f72b | 1163 | JMPENV_JUMP(3); |
3280af22 | 1164 | return PL_restartop; |
36477c24 | 1165 | } |
1166 | ||
c5be433b | 1167 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1168 | OP * |
1169 | Perl_die_nocontext(const char* pat, ...) | |
a687059c | 1170 | { |
cea2e8a9 GS |
1171 | dTHX; |
1172 | OP *o; | |
a687059c | 1173 | va_list args; |
cea2e8a9 | 1174 | va_start(args, pat); |
c5be433b | 1175 | o = vdie(pat, &args); |
cea2e8a9 GS |
1176 | va_end(args); |
1177 | return o; | |
1178 | } | |
c5be433b | 1179 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 GS |
1180 | |
1181 | OP * | |
1182 | Perl_die(pTHX_ const char* pat, ...) | |
1183 | { | |
1184 | OP *o; | |
1185 | va_list args; | |
1186 | va_start(args, pat); | |
c5be433b | 1187 | o = vdie(pat, &args); |
cea2e8a9 GS |
1188 | va_end(args); |
1189 | return o; | |
1190 | } | |
1191 | ||
c5be433b GS |
1192 | void |
1193 | Perl_vcroak(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1194 | { |
de3bb511 | 1195 | char *message; |
06bf62c7 | 1196 | STRLEN msglen; |
ff882698 | 1197 | I32 utf8 = 0; |
a687059c | 1198 | |
3ab1ac99 | 1199 | message = S_vdie_croak_common(aTHX_ pat, args, &msglen, &utf8); |
5a844595 | 1200 | |
3280af22 | 1201 | if (PL_in_eval) { |
06bf62c7 | 1202 | PL_restartop = die_where(message, msglen); |
ff882698 | 1203 | SvFLAGS(ERRSV) |= utf8; |
6224f72b | 1204 | JMPENV_JUMP(3); |
a0d0e21e | 1205 | } |
84414e3e JH |
1206 | else if (!message) |
1207 | message = SvPVx(ERRSV, msglen); | |
1208 | ||
7ff03255 | 1209 | write_to_stderr(message, msglen); |
f86702cc | 1210 | my_failure_exit(); |
a687059c LW |
1211 | } |
1212 | ||
c5be433b | 1213 | #if defined(PERL_IMPLICIT_CONTEXT) |
8990e307 | 1214 | void |
cea2e8a9 | 1215 | Perl_croak_nocontext(const char *pat, ...) |
a687059c | 1216 | { |
cea2e8a9 | 1217 | dTHX; |
a687059c | 1218 | va_list args; |
cea2e8a9 | 1219 | va_start(args, pat); |
c5be433b | 1220 | vcroak(pat, &args); |
cea2e8a9 GS |
1221 | /* NOTREACHED */ |
1222 | va_end(args); | |
1223 | } | |
1224 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1225 | ||
954c1994 | 1226 | /* |
ccfc67b7 JH |
1227 | =head1 Warning and Dieing |
1228 | ||
954c1994 GS |
1229 | =for apidoc croak |
1230 | ||
9983fa3c | 1231 | This is the XSUB-writer's interface to Perl's C<die> function. |
966353fd MF |
1232 | Normally call this function the same way you call the C C<printf> |
1233 | function. Calling C<croak> returns control directly to Perl, | |
1234 | sidestepping the normal C order of execution. See C<warn>. | |
9983fa3c GS |
1235 | |
1236 | If you want to throw an exception object, assign the object to | |
1237 | C<$@> and then pass C<Nullch> to croak(): | |
1238 | ||
1239 | errsv = get_sv("@", TRUE); | |
1240 | sv_setsv(errsv, exception_object); | |
1241 | croak(Nullch); | |
954c1994 GS |
1242 | |
1243 | =cut | |
1244 | */ | |
1245 | ||
cea2e8a9 GS |
1246 | void |
1247 | Perl_croak(pTHX_ const char *pat, ...) | |
1248 | { | |
1249 | va_list args; | |
1250 | va_start(args, pat); | |
c5be433b | 1251 | vcroak(pat, &args); |
cea2e8a9 GS |
1252 | /* NOTREACHED */ |
1253 | va_end(args); | |
1254 | } | |
1255 | ||
c5be433b GS |
1256 | void |
1257 | Perl_vwarn(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1258 | { |
de3bb511 | 1259 | char *message; |
748a9306 LW |
1260 | HV *stash; |
1261 | GV *gv; | |
1262 | CV *cv; | |
06bf62c7 GS |
1263 | SV *msv; |
1264 | STRLEN msglen; | |
ff882698 | 1265 | I32 utf8 = 0; |
a687059c | 1266 | |
5a844595 | 1267 | msv = vmess(pat, args); |
ff882698 | 1268 | utf8 = SvUTF8(msv); |
06bf62c7 | 1269 | message = SvPV(msv, msglen); |
a687059c | 1270 | |
3280af22 | 1271 | if (PL_warnhook) { |
cea2e8a9 | 1272 | /* sv_2cv might call Perl_warn() */ |
3280af22 | 1273 | SV *oldwarnhook = PL_warnhook; |
1738f5c4 | 1274 | ENTER; |
3280af22 NIS |
1275 | SAVESPTR(PL_warnhook); |
1276 | PL_warnhook = Nullsv; | |
20cec16a | 1277 | cv = sv_2cv(oldwarnhook, &stash, &gv, 0); |
1738f5c4 CS |
1278 | LEAVE; |
1279 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
20cec16a | 1280 | dSP; |
774d564b | 1281 | SV *msg; |
1282 | ||
1283 | ENTER; | |
3a1f2dc9 | 1284 | save_re_context(); |
06bf62c7 | 1285 | msg = newSVpvn(message, msglen); |
ff882698 | 1286 | SvFLAGS(msg) |= utf8; |
774d564b | 1287 | SvREADONLY_on(msg); |
1288 | SAVEFREESV(msg); | |
1289 | ||
e788e7d3 | 1290 | PUSHSTACKi(PERLSI_WARNHOOK); |
924508f0 | 1291 | PUSHMARK(SP); |
774d564b | 1292 | XPUSHs(msg); |
20cec16a | 1293 | PUTBACK; |
864dbfa3 | 1294 | call_sv((SV*)cv, G_DISCARD); |
d3acc0f7 | 1295 | POPSTACK; |
774d564b | 1296 | LEAVE; |
20cec16a | 1297 | return; |
1298 | } | |
748a9306 | 1299 | } |
87582a92 | 1300 | |
7ff03255 | 1301 | write_to_stderr(message, msglen); |
a687059c | 1302 | } |
8d063cd8 | 1303 | |
c5be433b | 1304 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1305 | void |
1306 | Perl_warn_nocontext(const char *pat, ...) | |
1307 | { | |
1308 | dTHX; | |
1309 | va_list args; | |
1310 | va_start(args, pat); | |
c5be433b | 1311 | vwarn(pat, &args); |
cea2e8a9 GS |
1312 | va_end(args); |
1313 | } | |
1314 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1315 | ||
954c1994 GS |
1316 | /* |
1317 | =for apidoc warn | |
1318 | ||
966353fd MF |
1319 | This is the XSUB-writer's interface to Perl's C<warn> function. Call this |
1320 | function the same way you call the C C<printf> function. See C<croak>. | |
954c1994 GS |
1321 | |
1322 | =cut | |
1323 | */ | |
1324 | ||
cea2e8a9 GS |
1325 | void |
1326 | Perl_warn(pTHX_ const char *pat, ...) | |
1327 | { | |
1328 | va_list args; | |
1329 | va_start(args, pat); | |
c5be433b | 1330 | vwarn(pat, &args); |
cea2e8a9 GS |
1331 | va_end(args); |
1332 | } | |
1333 | ||
c5be433b GS |
1334 | #if defined(PERL_IMPLICIT_CONTEXT) |
1335 | void | |
1336 | Perl_warner_nocontext(U32 err, const char *pat, ...) | |
1337 | { | |
1338 | dTHX; | |
1339 | va_list args; | |
1340 | va_start(args, pat); | |
1341 | vwarner(err, pat, &args); | |
1342 | va_end(args); | |
1343 | } | |
1344 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1345 | ||
599cee73 | 1346 | void |
864dbfa3 | 1347 | Perl_warner(pTHX_ U32 err, const char* pat,...) |
599cee73 PM |
1348 | { |
1349 | va_list args; | |
c5be433b GS |
1350 | va_start(args, pat); |
1351 | vwarner(err, pat, &args); | |
1352 | va_end(args); | |
1353 | } | |
1354 | ||
1355 | void | |
1356 | Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args) | |
1357 | { | |
d13b0d77 | 1358 | if (ckDEAD(err)) { |
63315e18 | 1359 | SV *msv = vmess(pat, args); |
d13b0d77 | 1360 | STRLEN msglen; |
63315e18 NC |
1361 | char *message = SvPV(msv, msglen); |
1362 | I32 utf8 = SvUTF8(msv); | |
599cee73 | 1363 | |
3aed30dc | 1364 | if (PL_diehook) { |
63315e18 NC |
1365 | assert(message); |
1366 | S_vdie_common(aTHX_ message, msglen, utf8); | |
3aed30dc HS |
1367 | } |
1368 | if (PL_in_eval) { | |
1369 | PL_restartop = die_where(message, msglen); | |
ff882698 | 1370 | SvFLAGS(ERRSV) |= utf8; |
3aed30dc HS |
1371 | JMPENV_JUMP(3); |
1372 | } | |
7ff03255 | 1373 | write_to_stderr(message, msglen); |
3aed30dc | 1374 | my_failure_exit(); |
599cee73 PM |
1375 | } |
1376 | else { | |
d13b0d77 | 1377 | Perl_vwarn(aTHX_ pat, args); |
599cee73 PM |
1378 | } |
1379 | } | |
1380 | ||
e6587932 DM |
1381 | /* since we've already done strlen() for both nam and val |
1382 | * we can use that info to make things faster than | |
1383 | * sprintf(s, "%s=%s", nam, val) | |
1384 | */ | |
1385 | #define my_setenv_format(s, nam, nlen, val, vlen) \ | |
1386 | Copy(nam, s, nlen, char); \ | |
1387 | *(s+nlen) = '='; \ | |
1388 | Copy(val, s+(nlen+1), vlen, char); \ | |
1389 | *(s+(nlen+1+vlen)) = '\0' | |
1390 | ||
13b6e58c | 1391 | #ifdef USE_ENVIRON_ARRAY |
eccd403f | 1392 | /* VMS' my_setenv() is in vms.c */ |
2986a63f | 1393 | #if !defined(WIN32) && !defined(NETWARE) |
8d063cd8 | 1394 | void |
864dbfa3 | 1395 | Perl_my_setenv(pTHX_ char *nam, char *val) |
8d063cd8 | 1396 | { |
4efc5df6 GS |
1397 | #ifdef USE_ITHREADS |
1398 | /* only parent thread can modify process environment */ | |
1399 | if (PL_curinterp == aTHX) | |
1400 | #endif | |
1401 | { | |
f2517201 | 1402 | #ifndef PERL_USE_SAFE_PUTENV |
50acdf95 | 1403 | if (!PL_use_safe_putenv) { |
f2517201 | 1404 | /* most putenv()s leak, so we manipulate environ directly */ |
79072805 | 1405 | register I32 i=setenv_getix(nam); /* where does it go? */ |
e6587932 | 1406 | int nlen, vlen; |
8d063cd8 | 1407 | |
3280af22 | 1408 | if (environ == PL_origenviron) { /* need we copy environment? */ |
79072805 LW |
1409 | I32 j; |
1410 | I32 max; | |
fe14fcc3 LW |
1411 | char **tmpenv; |
1412 | ||
de3bb511 | 1413 | /*SUPPRESS 530*/ |
fe14fcc3 | 1414 | for (max = i; environ[max]; max++) ; |
f2517201 GS |
1415 | tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*)); |
1416 | for (j=0; j<max; j++) { /* copy environment */ | |
3aed30dc HS |
1417 | int len = strlen(environ[j]); |
1418 | tmpenv[j] = (char*)safesysmalloc((len+1)*sizeof(char)); | |
1419 | Copy(environ[j], tmpenv[j], len+1, char); | |
f2517201 | 1420 | } |
fe14fcc3 LW |
1421 | tmpenv[max] = Nullch; |
1422 | environ = tmpenv; /* tell exec where it is now */ | |
1423 | } | |
a687059c | 1424 | if (!val) { |
f2517201 | 1425 | safesysfree(environ[i]); |
a687059c LW |
1426 | while (environ[i]) { |
1427 | environ[i] = environ[i+1]; | |
1428 | i++; | |
1429 | } | |
1430 | return; | |
1431 | } | |
8d063cd8 | 1432 | if (!environ[i]) { /* does not exist yet */ |
f2517201 | 1433 | environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*)); |
8d063cd8 LW |
1434 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
1435 | } | |
fe14fcc3 | 1436 | else |
f2517201 | 1437 | safesysfree(environ[i]); |
e6587932 DM |
1438 | nlen = strlen(nam); |
1439 | vlen = strlen(val); | |
f2517201 | 1440 | |
e6587932 DM |
1441 | environ[i] = (char*)safesysmalloc((nlen+vlen+2) * sizeof(char)); |
1442 | /* all that work just for this */ | |
1443 | my_setenv_format(environ[i], nam, nlen, val, vlen); | |
50acdf95 MS |
1444 | } else { |
1445 | # endif | |
eccd403f | 1446 | # if defined(__CYGWIN__) || defined( EPOC) |
47dafe4d EF |
1447 | setenv(nam, val, 1); |
1448 | # else | |
f2517201 | 1449 | char *new_env; |
e6587932 DM |
1450 | int nlen = strlen(nam), vlen; |
1451 | if (!val) { | |
3aed30dc | 1452 | val = ""; |
e6587932 DM |
1453 | } |
1454 | vlen = strlen(val); | |
1455 | new_env = (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); | |
1456 | /* all that work just for this */ | |
1457 | my_setenv_format(new_env, nam, nlen, val, vlen); | |
f2517201 | 1458 | (void)putenv(new_env); |
47dafe4d | 1459 | # endif /* __CYGWIN__ */ |
50acdf95 MS |
1460 | #ifndef PERL_USE_SAFE_PUTENV |
1461 | } | |
1462 | #endif | |
4efc5df6 | 1463 | } |
8d063cd8 LW |
1464 | } |
1465 | ||
2986a63f | 1466 | #else /* WIN32 || NETWARE */ |
68dc0745 | 1467 | |
1468 | void | |
864dbfa3 | 1469 | Perl_my_setenv(pTHX_ char *nam,char *val) |
68dc0745 | 1470 | { |
ac5c734f | 1471 | register char *envstr; |
e6587932 DM |
1472 | int nlen = strlen(nam), vlen; |
1473 | ||
ac5c734f GS |
1474 | if (!val) { |
1475 | val = ""; | |
1476 | } | |
e6587932 DM |
1477 | vlen = strlen(val); |
1478 | New(904, envstr, nlen+vlen+2, char); | |
1479 | my_setenv_format(envstr, nam, nlen, val, vlen); | |
ac5c734f GS |
1480 | (void)PerlEnv_putenv(envstr); |
1481 | Safefree(envstr); | |
3e3baf6d TB |
1482 | } |
1483 | ||
2986a63f | 1484 | #endif /* WIN32 || NETWARE */ |
3e3baf6d | 1485 | |
2f42fcb0 | 1486 | #ifndef PERL_MICRO |
3e3baf6d | 1487 | I32 |
864dbfa3 | 1488 | Perl_setenv_getix(pTHX_ char *nam) |
3e3baf6d TB |
1489 | { |
1490 | register I32 i, len = strlen(nam); | |
1491 | ||
1492 | for (i = 0; environ[i]; i++) { | |
1493 | if ( | |
1494 | #ifdef WIN32 | |
1495 | strnicmp(environ[i],nam,len) == 0 | |
1496 | #else | |
1497 | strnEQ(environ[i],nam,len) | |
1498 | #endif | |
1499 | && environ[i][len] == '=') | |
1500 | break; /* strnEQ must come first to avoid */ | |
1501 | } /* potential SEGV's */ | |
1502 | return i; | |
68dc0745 | 1503 | } |
2f42fcb0 | 1504 | #endif /* !PERL_MICRO */ |
68dc0745 | 1505 | |
ed79a026 | 1506 | #endif /* !VMS && !EPOC*/ |
378cc40b | 1507 | |
16d20bd9 | 1508 | #ifdef UNLINK_ALL_VERSIONS |
79072805 | 1509 | I32 |
864dbfa3 | 1510 | Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */ |
378cc40b | 1511 | { |
79072805 | 1512 | I32 i; |
378cc40b | 1513 | |
6ad3d225 | 1514 | for (i = 0; PerlLIO_unlink(f) >= 0; i++) ; |
378cc40b LW |
1515 | return i ? 0 : -1; |
1516 | } | |
1517 | #endif | |
1518 | ||
7a3f2258 | 1519 | /* this is a drop-in replacement for bcopy() */ |
2253333f | 1520 | #if (!defined(HAS_MEMCPY) && !defined(HAS_BCOPY)) || (!defined(HAS_MEMMOVE) && !defined(HAS_SAFE_MEMCPY) && !defined(HAS_SAFE_BCOPY)) |
378cc40b | 1521 | char * |
7a3f2258 | 1522 | Perl_my_bcopy(register const char *from,register char *to,register I32 len) |
378cc40b LW |
1523 | { |
1524 | char *retval = to; | |
1525 | ||
7c0587c8 LW |
1526 | if (from - to >= 0) { |
1527 | while (len--) | |
1528 | *to++ = *from++; | |
1529 | } | |
1530 | else { | |
1531 | to += len; | |
1532 | from += len; | |
1533 | while (len--) | |
faf8582f | 1534 | *(--to) = *(--from); |
7c0587c8 | 1535 | } |
378cc40b LW |
1536 | return retval; |
1537 | } | |
ffed7fef | 1538 | #endif |
378cc40b | 1539 | |
7a3f2258 | 1540 | /* this is a drop-in replacement for memset() */ |
fc36a67e | 1541 | #ifndef HAS_MEMSET |
1542 | void * | |
7a3f2258 | 1543 | Perl_my_memset(register char *loc, register I32 ch, register I32 len) |
fc36a67e | 1544 | { |
1545 | char *retval = loc; | |
1546 | ||
1547 | while (len--) | |
1548 | *loc++ = ch; | |
1549 | return retval; | |
1550 | } | |
1551 | #endif | |
1552 | ||
7a3f2258 | 1553 | /* this is a drop-in replacement for bzero() */ |
7c0587c8 | 1554 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
378cc40b | 1555 | char * |
7a3f2258 | 1556 | Perl_my_bzero(register char *loc, register I32 len) |
378cc40b LW |
1557 | { |
1558 | char *retval = loc; | |
1559 | ||
1560 | while (len--) | |
1561 | *loc++ = 0; | |
1562 | return retval; | |
1563 | } | |
1564 | #endif | |
7c0587c8 | 1565 | |
7a3f2258 | 1566 | /* this is a drop-in replacement for memcmp() */ |
36477c24 | 1567 | #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP) |
79072805 | 1568 | I32 |
7a3f2258 | 1569 | Perl_my_memcmp(const char *s1, const char *s2, register I32 len) |
7c0587c8 | 1570 | { |
36477c24 | 1571 | register U8 *a = (U8 *)s1; |
1572 | register U8 *b = (U8 *)s2; | |
79072805 | 1573 | register I32 tmp; |
7c0587c8 LW |
1574 | |
1575 | while (len--) { | |
36477c24 | 1576 | if (tmp = *a++ - *b++) |
7c0587c8 LW |
1577 | return tmp; |
1578 | } | |
1579 | return 0; | |
1580 | } | |
36477c24 | 1581 | #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */ |
a687059c | 1582 | |
fe14fcc3 | 1583 | #ifndef HAS_VPRINTF |
a687059c | 1584 | |
85e6fe83 | 1585 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1586 | char * |
1587 | #else | |
1588 | int | |
1589 | #endif | |
08105a92 | 1590 | vsprintf(char *dest, const char *pat, char *args) |
a687059c LW |
1591 | { |
1592 | FILE fakebuf; | |
1593 | ||
1594 | fakebuf._ptr = dest; | |
1595 | fakebuf._cnt = 32767; | |
35c8bce7 LW |
1596 | #ifndef _IOSTRG |
1597 | #define _IOSTRG 0 | |
1598 | #endif | |
a687059c LW |
1599 | fakebuf._flag = _IOWRT|_IOSTRG; |
1600 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1601 | (void)putc('\0', &fakebuf); | |
85e6fe83 | 1602 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1603 | return(dest); |
1604 | #else | |
1605 | return 0; /* perl doesn't use return value */ | |
1606 | #endif | |
1607 | } | |
1608 | ||
fe14fcc3 | 1609 | #endif /* HAS_VPRINTF */ |
a687059c LW |
1610 | |
1611 | #ifdef MYSWAP | |
ffed7fef | 1612 | #if BYTEORDER != 0x4321 |
a687059c | 1613 | short |
864dbfa3 | 1614 | Perl_my_swap(pTHX_ short s) |
a687059c LW |
1615 | { |
1616 | #if (BYTEORDER & 1) == 0 | |
1617 | short result; | |
1618 | ||
1619 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1620 | return result; | |
1621 | #else | |
1622 | return s; | |
1623 | #endif | |
1624 | } | |
1625 | ||
1626 | long | |
864dbfa3 | 1627 | Perl_my_htonl(pTHX_ long l) |
a687059c LW |
1628 | { |
1629 | union { | |
1630 | long result; | |
ffed7fef | 1631 | char c[sizeof(long)]; |
a687059c LW |
1632 | } u; |
1633 | ||
ffed7fef | 1634 | #if BYTEORDER == 0x1234 |
a687059c LW |
1635 | u.c[0] = (l >> 24) & 255; |
1636 | u.c[1] = (l >> 16) & 255; | |
1637 | u.c[2] = (l >> 8) & 255; | |
1638 | u.c[3] = l & 255; | |
1639 | return u.result; | |
1640 | #else | |
ffed7fef | 1641 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
cea2e8a9 | 1642 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
a687059c | 1643 | #else |
79072805 LW |
1644 | register I32 o; |
1645 | register I32 s; | |
a687059c | 1646 | |
ffed7fef LW |
1647 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1648 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1649 | } |
1650 | return u.result; | |
1651 | #endif | |
1652 | #endif | |
1653 | } | |
1654 | ||
1655 | long | |
864dbfa3 | 1656 | Perl_my_ntohl(pTHX_ long l) |
a687059c LW |
1657 | { |
1658 | union { | |
1659 | long l; | |
ffed7fef | 1660 | char c[sizeof(long)]; |
a687059c LW |
1661 | } u; |
1662 | ||
ffed7fef | 1663 | #if BYTEORDER == 0x1234 |
a687059c LW |
1664 | u.c[0] = (l >> 24) & 255; |
1665 | u.c[1] = (l >> 16) & 255; | |
1666 | u.c[2] = (l >> 8) & 255; | |
1667 | u.c[3] = l & 255; | |
1668 | return u.l; | |
1669 | #else | |
ffed7fef | 1670 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
cea2e8a9 | 1671 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
a687059c | 1672 | #else |
79072805 LW |
1673 | register I32 o; |
1674 | register I32 s; | |
a687059c LW |
1675 | |
1676 | u.l = l; | |
1677 | l = 0; | |
ffed7fef LW |
1678 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1679 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1680 | } |
1681 | return l; | |
1682 | #endif | |
1683 | #endif | |
1684 | } | |
1685 | ||
ffed7fef | 1686 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 LW |
1687 | #endif /* MYSWAP */ |
1688 | ||
1689 | /* | |
1690 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. | |
1691 | * If these functions are defined, | |
1692 | * the BYTEORDER is neither 0x1234 nor 0x4321. | |
1693 | * However, this is not assumed. | |
1694 | * -DWS | |
1695 | */ | |
1696 | ||
1109a392 | 1697 | #define HTOLE(name,type) \ |
988174c1 | 1698 | type \ |
ba106d47 | 1699 | name (register type n) \ |
988174c1 LW |
1700 | { \ |
1701 | union { \ | |
1702 | type value; \ | |
1703 | char c[sizeof(type)]; \ | |
1704 | } u; \ | |
79072805 | 1705 | register I32 i; \ |
1109a392 MHM |
1706 | register I32 s = 0; \ |
1707 | for (i = 0; i < sizeof(u.c); i++, s += 8) { \ | |
988174c1 LW |
1708 | u.c[i] = (n >> s) & 0xFF; \ |
1709 | } \ | |
1710 | return u.value; \ | |
1711 | } | |
1712 | ||
1109a392 | 1713 | #define LETOH(name,type) \ |
988174c1 | 1714 | type \ |
ba106d47 | 1715 | name (register type n) \ |
988174c1 LW |
1716 | { \ |
1717 | union { \ | |
1718 | type value; \ | |
1719 | char c[sizeof(type)]; \ | |
1720 | } u; \ | |
79072805 | 1721 | register I32 i; \ |
1109a392 | 1722 | register I32 s = 0; \ |
988174c1 LW |
1723 | u.value = n; \ |
1724 | n = 0; \ | |
1109a392 MHM |
1725 | for (i = 0; i < sizeof(u.c); i++, s += 8) { \ |
1726 | n |= ((type)(u.c[i] & 0xFF)) << s; \ | |
988174c1 LW |
1727 | } \ |
1728 | return n; \ | |
1729 | } | |
1730 | ||
1109a392 MHM |
1731 | /* |
1732 | * Big-endian byte order functions. | |
1733 | */ | |
1734 | ||
1735 | #define HTOBE(name,type) \ | |
1736 | type \ | |
1737 | name (register type n) \ | |
1738 | { \ | |
1739 | union { \ | |
1740 | type value; \ | |
1741 | char c[sizeof(type)]; \ | |
1742 | } u; \ | |
1743 | register I32 i; \ | |
1744 | register I32 s = 8*(sizeof(u.c)-1); \ | |
1745 | for (i = 0; i < sizeof(u.c); i++, s -= 8) { \ | |
1746 | u.c[i] = (n >> s) & 0xFF; \ | |
1747 | } \ | |
1748 | return u.value; \ | |
1749 | } | |
1750 | ||
1751 | #define BETOH(name,type) \ | |
1752 | type \ | |
1753 | name (register type n) \ | |
1754 | { \ | |
1755 | union { \ | |
1756 | type value; \ | |
1757 | char c[sizeof(type)]; \ | |
1758 | } u; \ | |
1759 | register I32 i; \ | |
1760 | register I32 s = 8*(sizeof(u.c)-1); \ | |
1761 | u.value = n; \ | |
1762 | n = 0; \ | |
1763 | for (i = 0; i < sizeof(u.c); i++, s -= 8) { \ | |
1764 | n |= ((type)(u.c[i] & 0xFF)) << s; \ | |
1765 | } \ | |
1766 | return n; \ | |
1767 | } | |
1768 | ||
1769 | /* | |
1770 | * If we just can't do it... | |
1771 | */ | |
1772 | ||
1773 | #define NOT_AVAIL(name,type) \ | |
1774 | type \ | |
1775 | name (register type n) \ | |
1776 | { \ | |
1777 | Perl_croak_nocontext(#name "() not available"); \ | |
1778 | return n; /* not reached */ \ | |
1779 | } | |
1780 | ||
1781 | ||
988174c1 | 1782 | #if defined(HAS_HTOVS) && !defined(htovs) |
1109a392 | 1783 | HTOLE(htovs,short) |
988174c1 LW |
1784 | #endif |
1785 | #if defined(HAS_HTOVL) && !defined(htovl) | |
1109a392 | 1786 | HTOLE(htovl,long) |
988174c1 LW |
1787 | #endif |
1788 | #if defined(HAS_VTOHS) && !defined(vtohs) | |
1109a392 | 1789 | LETOH(vtohs,short) |
988174c1 LW |
1790 | #endif |
1791 | #if defined(HAS_VTOHL) && !defined(vtohl) | |
1109a392 MHM |
1792 | LETOH(vtohl,long) |
1793 | #endif | |
1794 | ||
1795 | #ifdef PERL_NEED_MY_HTOLE16 | |
1796 | # if U16SIZE == 2 | |
1797 | HTOLE(Perl_my_htole16,U16) | |
1798 | # else | |
1799 | NOT_AVAIL(Perl_my_htole16,U16) | |
1800 | # endif | |
1801 | #endif | |
1802 | #ifdef PERL_NEED_MY_LETOH16 | |
1803 | # if U16SIZE == 2 | |
1804 | LETOH(Perl_my_letoh16,U16) | |
1805 | # else | |
1806 | NOT_AVAIL(Perl_my_letoh16,U16) | |
1807 | # endif | |
1808 | #endif | |
1809 | #ifdef PERL_NEED_MY_HTOBE16 | |
1810 | # if U16SIZE == 2 | |
1811 | HTOBE(Perl_my_htobe16,U16) | |
1812 | # else | |
1813 | NOT_AVAIL(Perl_my_htobe16,U16) | |
1814 | # endif | |
1815 | #endif | |
1816 | #ifdef PERL_NEED_MY_BETOH16 | |
1817 | # if U16SIZE == 2 | |
1818 | BETOH(Perl_my_betoh16,U16) | |
1819 | # else | |
1820 | NOT_AVAIL(Perl_my_betoh16,U16) | |
1821 | # endif | |
1822 | #endif | |
1823 | ||
1824 | #ifdef PERL_NEED_MY_HTOLE32 | |
1825 | # if U32SIZE == 4 | |
1826 | HTOLE(Perl_my_htole32,U32) | |
1827 | # else | |
1828 | NOT_AVAIL(Perl_my_htole32,U32) | |
1829 | # endif | |
1830 | #endif | |
1831 | #ifdef PERL_NEED_MY_LETOH32 | |
1832 | # if U32SIZE == 4 | |
1833 | LETOH(Perl_my_letoh32,U32) | |
1834 | # else | |
1835 | NOT_AVAIL(Perl_my_letoh32,U32) | |
1836 | # endif | |
1837 | #endif | |
1838 | #ifdef PERL_NEED_MY_HTOBE32 | |
1839 | # if U32SIZE == 4 | |
1840 | HTOBE(Perl_my_htobe32,U32) | |
1841 | # else | |
1842 | NOT_AVAIL(Perl_my_htobe32,U32) | |
1843 | # endif | |
1844 | #endif | |
1845 | #ifdef PERL_NEED_MY_BETOH32 | |
1846 | # if U32SIZE == 4 | |
1847 | BETOH(Perl_my_betoh32,U32) | |
1848 | # else | |
1849 | NOT_AVAIL(Perl_my_betoh32,U32) | |
1850 | # endif | |
1851 | #endif | |
1852 | ||
1853 | #ifdef PERL_NEED_MY_HTOLE64 | |
1854 | # if U64SIZE == 8 | |
1855 | HTOLE(Perl_my_htole64,U64) | |
1856 | # else | |
1857 | NOT_AVAIL(Perl_my_htole64,U64) | |
1858 | # endif | |
1859 | #endif | |
1860 | #ifdef PERL_NEED_MY_LETOH64 | |
1861 | # if U64SIZE == 8 | |
1862 | LETOH(Perl_my_letoh64,U64) | |
1863 | # else | |
1864 | NOT_AVAIL(Perl_my_letoh64,U64) | |
1865 | # endif | |
1866 | #endif | |
1867 | #ifdef PERL_NEED_MY_HTOBE64 | |
1868 | # if U64SIZE == 8 | |
1869 | HTOBE(Perl_my_htobe64,U64) | |
1870 | # else | |
1871 | NOT_AVAIL(Perl_my_htobe64,U64) | |
1872 | # endif | |
1873 | #endif | |
1874 | #ifdef PERL_NEED_MY_BETOH64 | |
1875 | # if U64SIZE == 8 | |
1876 | BETOH(Perl_my_betoh64,U64) | |
1877 | # else | |
1878 | NOT_AVAIL(Perl_my_betoh64,U64) | |
1879 | # endif | |
988174c1 | 1880 | #endif |
a687059c | 1881 | |
1109a392 MHM |
1882 | #ifdef PERL_NEED_MY_HTOLES |
1883 | HTOLE(Perl_my_htoles,short) | |
1884 | #endif | |
1885 | #ifdef PERL_NEED_MY_LETOHS | |
1886 | LETOH(Perl_my_letohs,short) | |
1887 | #endif | |
1888 | #ifdef PERL_NEED_MY_HTOBES | |
1889 | HTOBE(Perl_my_htobes,short) | |
1890 | #endif | |
1891 | #ifdef PERL_NEED_MY_BETOHS | |
1892 | BETOH(Perl_my_betohs,short) | |
1893 | #endif | |
1894 | ||
1895 | #ifdef PERL_NEED_MY_HTOLEI | |
1896 | HTOLE(Perl_my_htolei,int) | |
1897 | #endif | |
1898 | #ifdef PERL_NEED_MY_LETOHI | |
1899 | LETOH(Perl_my_letohi,int) | |
1900 | #endif | |
1901 | #ifdef PERL_NEED_MY_HTOBEI | |
1902 | HTOBE(Perl_my_htobei,int) | |
1903 | #endif | |
1904 | #ifdef PERL_NEED_MY_BETOHI | |
1905 | BETOH(Perl_my_betohi,int) | |
1906 | #endif | |
1907 | ||
1908 | #ifdef PERL_NEED_MY_HTOLEL | |
1909 | HTOLE(Perl_my_htolel,long) | |
1910 | #endif | |
1911 | #ifdef PERL_NEED_MY_LETOHL | |
1912 | LETOH(Perl_my_letohl,long) | |
1913 | #endif | |
1914 | #ifdef PERL_NEED_MY_HTOBEL | |
1915 | HTOBE(Perl_my_htobel,long) | |
1916 | #endif | |
1917 | #ifdef PERL_NEED_MY_BETOHL | |
1918 | BETOH(Perl_my_betohl,long) | |
1919 | #endif | |
1920 | ||
1921 | void | |
1922 | Perl_my_swabn(void *ptr, int n) | |
1923 | { | |
1924 | register char *s = (char *)ptr; | |
1925 | register char *e = s + (n-1); | |
1926 | register char tc; | |
1927 | ||
1928 | for (n /= 2; n > 0; s++, e--, n--) { | |
1929 | tc = *s; | |
1930 | *s = *e; | |
1931 | *e = tc; | |
1932 | } | |
1933 | } | |
1934 | ||
4a7d1889 NIS |
1935 | PerlIO * |
1936 | Perl_my_popen_list(pTHX_ char *mode, int n, SV **args) | |
1937 | { | |
2986a63f | 1938 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(OS2) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) && !defined(NETWARE) |
1f852d0d NIS |
1939 | int p[2]; |
1940 | register I32 This, that; | |
1941 | register Pid_t pid; | |
1942 | SV *sv; | |
1943 | I32 did_pipes = 0; | |
1944 | int pp[2]; | |
1945 | ||
1946 | PERL_FLUSHALL_FOR_CHILD; | |
1947 | This = (*mode == 'w'); | |
1948 | that = !This; | |
1949 | if (PL_tainting) { | |
1950 | taint_env(); | |
1951 | taint_proper("Insecure %s%s", "EXEC"); | |
1952 | } | |
1953 | if (PerlProc_pipe(p) < 0) | |
1954 | return Nullfp; | |
1955 | /* Try for another pipe pair for error return */ | |
1956 | if (PerlProc_pipe(pp) >= 0) | |
1957 | did_pipes = 1; | |
52e18b1f | 1958 | while ((pid = PerlProc_fork()) < 0) { |
1f852d0d NIS |
1959 | if (errno != EAGAIN) { |
1960 | PerlLIO_close(p[This]); | |
4e6dfe71 | 1961 | PerlLIO_close(p[that]); |
1f852d0d NIS |
1962 | if (did_pipes) { |
1963 | PerlLIO_close(pp[0]); | |
1964 | PerlLIO_close(pp[1]); | |
1965 | } | |
1966 | return Nullfp; | |
1967 | } | |
1968 | sleep(5); | |
1969 | } | |
1970 | if (pid == 0) { | |
1971 | /* Child */ | |
1f852d0d NIS |
1972 | #undef THIS |
1973 | #undef THAT | |
1974 | #define THIS that | |
1975 | #define THAT This | |
1f852d0d NIS |
1976 | /* Close parent's end of error status pipe (if any) */ |
1977 | if (did_pipes) { | |
1978 | PerlLIO_close(pp[0]); | |
1979 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
1980 | /* Close error pipe automatically if exec works */ | |
1981 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); | |
1982 | #endif | |
1983 | } | |
1984 | /* Now dup our end of _the_ pipe to right position */ | |
1985 | if (p[THIS] != (*mode == 'r')) { | |
1986 | PerlLIO_dup2(p[THIS], *mode == 'r'); | |
1987 | PerlLIO_close(p[THIS]); | |
4e6dfe71 GS |
1988 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
1989 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ | |
1f852d0d | 1990 | } |
4e6dfe71 GS |
1991 | else |
1992 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ | |
1f852d0d NIS |
1993 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
1994 | /* No automatic close - do it by hand */ | |
b7953727 JH |
1995 | # ifndef NOFILE |
1996 | # define NOFILE 20 | |
1997 | # endif | |
a080fe3d NIS |
1998 | { |
1999 | int fd; | |
2000 | ||
2001 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) { | |
3aed30dc | 2002 | if (fd != pp[1]) |
a080fe3d NIS |
2003 | PerlLIO_close(fd); |
2004 | } | |
1f852d0d NIS |
2005 | } |
2006 | #endif | |
2007 | do_aexec5(Nullsv, args-1, args-1+n, pp[1], did_pipes); | |
2008 | PerlProc__exit(1); | |
2009 | #undef THIS | |
2010 | #undef THAT | |
2011 | } | |
2012 | /* Parent */ | |
52e18b1f | 2013 | do_execfree(); /* free any memory malloced by child on fork */ |
1f852d0d NIS |
2014 | if (did_pipes) |
2015 | PerlLIO_close(pp[1]); | |
2016 | /* Keep the lower of the two fd numbers */ | |
2017 | if (p[that] < p[This]) { | |
2018 | PerlLIO_dup2(p[This], p[that]); | |
2019 | PerlLIO_close(p[This]); | |
2020 | p[This] = p[that]; | |
2021 | } | |
4e6dfe71 GS |
2022 | else |
2023 | PerlLIO_close(p[that]); /* close child's end of pipe */ | |
2024 | ||
1f852d0d NIS |
2025 | LOCK_FDPID_MUTEX; |
2026 | sv = *av_fetch(PL_fdpid,p[This],TRUE); | |
2027 | UNLOCK_FDPID_MUTEX; | |
2028 | (void)SvUPGRADE(sv,SVt_IV); | |
2029 | SvIVX(sv) = pid; | |
2030 | PL_forkprocess = pid; | |
2031 | /* If we managed to get status pipe check for exec fail */ | |
2032 | if (did_pipes && pid > 0) { | |
2033 | int errkid; | |
2034 | int n = 0, n1; | |
2035 | ||
2036 | while (n < sizeof(int)) { | |
2037 | n1 = PerlLIO_read(pp[0], | |
2038 | (void*)(((char*)&errkid)+n), | |
2039 | (sizeof(int)) - n); | |
2040 | if (n1 <= 0) | |
2041 | break; | |
2042 | n += n1; | |
2043 | } | |
2044 | PerlLIO_close(pp[0]); | |
2045 | did_pipes = 0; | |
2046 | if (n) { /* Error */ | |
2047 | int pid2, status; | |
8c51524e | 2048 | PerlLIO_close(p[This]); |
1f852d0d NIS |
2049 | if (n != sizeof(int)) |
2050 | Perl_croak(aTHX_ "panic: kid popen errno read"); | |
2051 | do { | |
2052 | pid2 = wait4pid(pid, &status, 0); | |
2053 | } while (pid2 == -1 && errno == EINTR); | |
2054 | errno = errkid; /* Propagate errno from kid */ | |
2055 | return Nullfp; | |
2056 | } | |
2057 | } | |
2058 | if (did_pipes) | |
2059 | PerlLIO_close(pp[0]); | |
2060 | return PerlIO_fdopen(p[This], mode); | |
2061 | #else | |
4a7d1889 NIS |
2062 | Perl_croak(aTHX_ "List form of piped open not implemented"); |
2063 | return (PerlIO *) NULL; | |
1f852d0d | 2064 | #endif |
4a7d1889 NIS |
2065 | } |
2066 | ||
5f05dabc | 2067 | /* VMS' my_popen() is in VMS.c, same with OS/2. */ |
cd39f2b6 | 2068 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
760ac839 | 2069 | PerlIO * |
864dbfa3 | 2070 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
a687059c LW |
2071 | { |
2072 | int p[2]; | |
8ac85365 | 2073 | register I32 This, that; |
d8a83dd3 | 2074 | register Pid_t pid; |
79072805 | 2075 | SV *sv; |
770526c1 | 2076 | I32 doexec = !(*cmd == '-' && cmd[1] == '\0'); |
e446cec8 IZ |
2077 | I32 did_pipes = 0; |
2078 | int pp[2]; | |
a687059c | 2079 | |
45bc9206 | 2080 | PERL_FLUSHALL_FOR_CHILD; |
ddcf38b7 IZ |
2081 | #ifdef OS2 |
2082 | if (doexec) { | |
23da6c43 | 2083 | return my_syspopen(aTHX_ cmd,mode); |
ddcf38b7 | 2084 | } |
a1d180c4 | 2085 | #endif |
8ac85365 NIS |
2086 | This = (*mode == 'w'); |
2087 | that = !This; | |
3280af22 | 2088 | if (doexec && PL_tainting) { |
bbce6d69 | 2089 | taint_env(); |
2090 | taint_proper("Insecure %s%s", "EXEC"); | |
d48672a2 | 2091 | } |
c2267164 IZ |
2092 | if (PerlProc_pipe(p) < 0) |
2093 | return Nullfp; | |
e446cec8 IZ |
2094 | if (doexec && PerlProc_pipe(pp) >= 0) |
2095 | did_pipes = 1; | |
52e18b1f | 2096 | while ((pid = PerlProc_fork()) < 0) { |
a687059c | 2097 | if (errno != EAGAIN) { |
6ad3d225 | 2098 | PerlLIO_close(p[This]); |
b5ac89c3 | 2099 | PerlLIO_close(p[that]); |
e446cec8 IZ |
2100 | if (did_pipes) { |
2101 | PerlLIO_close(pp[0]); | |
2102 | PerlLIO_close(pp[1]); | |
2103 | } | |
a687059c | 2104 | if (!doexec) |
cea2e8a9 | 2105 | Perl_croak(aTHX_ "Can't fork"); |
a687059c LW |
2106 | return Nullfp; |
2107 | } | |
2108 | sleep(5); | |
2109 | } | |
2110 | if (pid == 0) { | |
79072805 LW |
2111 | GV* tmpgv; |
2112 | ||
30ac6d9b GS |
2113 | #undef THIS |
2114 | #undef THAT | |
a687059c | 2115 | #define THIS that |
8ac85365 | 2116 | #define THAT This |
e446cec8 IZ |
2117 | if (did_pipes) { |
2118 | PerlLIO_close(pp[0]); | |
2119 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
2120 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); | |
2121 | #endif | |
2122 | } | |
a687059c | 2123 | if (p[THIS] != (*mode == 'r')) { |
6ad3d225 GS |
2124 | PerlLIO_dup2(p[THIS], *mode == 'r'); |
2125 | PerlLIO_close(p[THIS]); | |
b5ac89c3 NIS |
2126 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
2127 | PerlLIO_close(p[THAT]); | |
a687059c | 2128 | } |
b5ac89c3 NIS |
2129 | else |
2130 | PerlLIO_close(p[THAT]); | |
4435c477 | 2131 | #ifndef OS2 |
a687059c | 2132 | if (doexec) { |
a0d0e21e | 2133 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 LW |
2134 | int fd; |
2135 | ||
2136 | #ifndef NOFILE | |
2137 | #define NOFILE 20 | |
2138 | #endif | |
a080fe3d | 2139 | { |
3aed30dc | 2140 | int fd; |
a080fe3d NIS |
2141 | |
2142 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) | |
2143 | if (fd != pp[1]) | |
3aed30dc | 2144 | PerlLIO_close(fd); |
a080fe3d | 2145 | } |
ae986130 | 2146 | #endif |
a080fe3d NIS |
2147 | /* may or may not use the shell */ |
2148 | do_exec3(cmd, pp[1], did_pipes); | |
6ad3d225 | 2149 | PerlProc__exit(1); |
a687059c | 2150 | } |
4435c477 | 2151 | #endif /* defined OS2 */ |
de3bb511 | 2152 | /*SUPPRESS 560*/ |
306196c3 | 2153 | if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) { |
4d76a344 | 2154 | SvREADONLY_off(GvSV(tmpgv)); |
7766f137 | 2155 | sv_setiv(GvSV(tmpgv), PerlProc_getpid()); |
4d76a344 RGS |
2156 | SvREADONLY_on(GvSV(tmpgv)); |
2157 | } | |
2158 | #ifdef THREADS_HAVE_PIDS | |
2159 | PL_ppid = (IV)getppid(); | |
2160 | #endif | |
3280af22 NIS |
2161 | PL_forkprocess = 0; |
2162 | hv_clear(PL_pidstatus); /* we have no children */ | |
a687059c LW |
2163 | return Nullfp; |
2164 | #undef THIS | |
2165 | #undef THAT | |
2166 | } | |
b5ac89c3 | 2167 | do_execfree(); /* free any memory malloced by child on vfork */ |
e446cec8 IZ |
2168 | if (did_pipes) |
2169 | PerlLIO_close(pp[1]); | |
8ac85365 | 2170 | if (p[that] < p[This]) { |
6ad3d225 GS |
2171 | PerlLIO_dup2(p[This], p[that]); |
2172 | PerlLIO_close(p[This]); | |
8ac85365 | 2173 | p[This] = p[that]; |
62b28dd9 | 2174 | } |
b5ac89c3 NIS |
2175 | else |
2176 | PerlLIO_close(p[that]); | |
2177 | ||
4755096e | 2178 | LOCK_FDPID_MUTEX; |
3280af22 | 2179 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
4755096e | 2180 | UNLOCK_FDPID_MUTEX; |
a0d0e21e | 2181 | (void)SvUPGRADE(sv,SVt_IV); |
463ee0b2 | 2182 | SvIVX(sv) = pid; |
3280af22 | 2183 | PL_forkprocess = pid; |
e446cec8 IZ |
2184 | if (did_pipes && pid > 0) { |
2185 | int errkid; | |
2186 | int n = 0, n1; | |
2187 | ||
2188 | while (n < sizeof(int)) { | |
2189 | n1 = PerlLIO_read(pp[0], | |
2190 | (void*)(((char*)&errkid)+n), | |
2191 | (sizeof(int)) - n); | |
2192 | if (n1 <= 0) | |
2193 | break; | |
2194 | n += n1; | |
2195 | } | |
2f96c702 IZ |
2196 | PerlLIO_close(pp[0]); |
2197 | did_pipes = 0; | |
e446cec8 | 2198 | if (n) { /* Error */ |
faa466a7 | 2199 | int pid2, status; |
8c51524e | 2200 | PerlLIO_close(p[This]); |
e446cec8 | 2201 | if (n != sizeof(int)) |
cea2e8a9 | 2202 | Perl_croak(aTHX_ "panic: kid popen errno read"); |
faa466a7 RG |
2203 | do { |
2204 | pid2 = wait4pid(pid, &status, 0); | |
2205 | } while (pid2 == -1 && errno == EINTR); | |
e446cec8 IZ |
2206 | errno = errkid; /* Propagate errno from kid */ |
2207 | return Nullfp; | |
2208 | } | |
2209 | } | |
2210 | if (did_pipes) | |
2211 | PerlLIO_close(pp[0]); | |
8ac85365 | 2212 | return PerlIO_fdopen(p[This], mode); |
a687059c | 2213 | } |
7c0587c8 | 2214 | #else |
85ca448a | 2215 | #if defined(atarist) || defined(EPOC) |
7c0587c8 | 2216 | FILE *popen(); |
760ac839 | 2217 | PerlIO * |
864dbfa3 | 2218 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
7c0587c8 | 2219 | { |
45bc9206 | 2220 | PERL_FLUSHALL_FOR_CHILD; |
a1d180c4 NIS |
2221 | /* Call system's popen() to get a FILE *, then import it. |
2222 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2223 | apparently not used | |
2224 | */ | |
2225 | return PerlIO_importFILE(popen(cmd, mode), 0); | |
7c0587c8 | 2226 | } |
2b96b0a5 JH |
2227 | #else |
2228 | #if defined(DJGPP) | |
2229 | FILE *djgpp_popen(); | |
2230 | PerlIO * | |
2231 | Perl_my_popen(pTHX_ char *cmd, char *mode) | |
2232 | { | |
2233 | PERL_FLUSHALL_FOR_CHILD; | |
2234 | /* Call system's popen() to get a FILE *, then import it. | |
2235 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2236 | apparently not used | |
2237 | */ | |
2238 | return PerlIO_importFILE(djgpp_popen(cmd, mode), 0); | |
2239 | } | |
2240 | #endif | |
7c0587c8 LW |
2241 | #endif |
2242 | ||
2243 | #endif /* !DOSISH */ | |
a687059c | 2244 | |
52e18b1f GS |
2245 | /* this is called in parent before the fork() */ |
2246 | void | |
2247 | Perl_atfork_lock(void) | |
2248 | { | |
3db8f154 | 2249 | #if defined(USE_ITHREADS) |
52e18b1f GS |
2250 | /* locks must be held in locking order (if any) */ |
2251 | # ifdef MYMALLOC | |
2252 | MUTEX_LOCK(&PL_malloc_mutex); | |
2253 | # endif | |
2254 | OP_REFCNT_LOCK; | |
2255 | #endif | |
2256 | } | |
2257 | ||
2258 | /* this is called in both parent and child after the fork() */ | |
2259 | void | |
2260 | Perl_atfork_unlock(void) | |
2261 | { | |
3db8f154 | 2262 | #if defined(USE_ITHREADS) |
52e18b1f GS |
2263 | /* locks must be released in same order as in atfork_lock() */ |
2264 | # ifdef MYMALLOC | |
2265 | MUTEX_UNLOCK(&PL_malloc_mutex); | |
2266 | # endif | |
2267 | OP_REFCNT_UNLOCK; | |
2268 | #endif | |
2269 | } | |
2270 | ||
2271 | Pid_t | |
2272 | Perl_my_fork(void) | |
2273 | { | |
2274 | #if defined(HAS_FORK) | |
2275 | Pid_t pid; | |
3db8f154 | 2276 | #if defined(USE_ITHREADS) && !defined(HAS_PTHREAD_ATFORK) |
52e18b1f GS |
2277 | atfork_lock(); |
2278 | pid = fork(); | |
2279 | atfork_unlock(); | |
2280 | #else | |
2281 | /* atfork_lock() and atfork_unlock() are installed as pthread_atfork() | |
2282 | * handlers elsewhere in the code */ | |
2283 | pid = fork(); | |
2284 | #endif | |
2285 | return pid; | |
2286 | #else | |
2287 | /* this "canna happen" since nothing should be calling here if !HAS_FORK */ | |
2288 | Perl_croak_nocontext("fork() not available"); | |
b961a566 | 2289 | return 0; |
52e18b1f GS |
2290 | #endif /* HAS_FORK */ |
2291 | } | |
2292 | ||
748a9306 | 2293 | #ifdef DUMP_FDS |
35ff7856 | 2294 | void |
864dbfa3 | 2295 | Perl_dump_fds(pTHX_ char *s) |
ae986130 LW |
2296 | { |
2297 | int fd; | |
c623ac67 | 2298 | Stat_t tmpstatbuf; |
ae986130 | 2299 | |
bf49b057 | 2300 | PerlIO_printf(Perl_debug_log,"%s", s); |
ae986130 | 2301 | for (fd = 0; fd < 32; fd++) { |
6ad3d225 | 2302 | if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0) |
bf49b057 | 2303 | PerlIO_printf(Perl_debug_log," %d",fd); |
ae986130 | 2304 | } |
bf49b057 | 2305 | PerlIO_printf(Perl_debug_log,"\n"); |
ae986130 | 2306 | } |
35ff7856 | 2307 | #endif /* DUMP_FDS */ |
ae986130 | 2308 | |
fe14fcc3 | 2309 | #ifndef HAS_DUP2 |
fec02dd3 | 2310 | int |
ba106d47 | 2311 | dup2(int oldfd, int newfd) |
a687059c | 2312 | { |
a0d0e21e | 2313 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
fec02dd3 AD |
2314 | if (oldfd == newfd) |
2315 | return oldfd; | |
6ad3d225 | 2316 | PerlLIO_close(newfd); |
fec02dd3 | 2317 | return fcntl(oldfd, F_DUPFD, newfd); |
62b28dd9 | 2318 | #else |
fc36a67e | 2319 | #define DUP2_MAX_FDS 256 |
2320 | int fdtmp[DUP2_MAX_FDS]; | |
79072805 | 2321 | I32 fdx = 0; |
ae986130 LW |
2322 | int fd; |
2323 | ||
fe14fcc3 | 2324 | if (oldfd == newfd) |
fec02dd3 | 2325 | return oldfd; |
6ad3d225 | 2326 | PerlLIO_close(newfd); |
fc36a67e | 2327 | /* good enough for low fd's... */ |
6ad3d225 | 2328 | while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) { |
fc36a67e | 2329 | if (fdx >= DUP2_MAX_FDS) { |
6ad3d225 | 2330 | PerlLIO_close(fd); |
fc36a67e | 2331 | fd = -1; |
2332 | break; | |
2333 | } | |
ae986130 | 2334 | fdtmp[fdx++] = fd; |
fc36a67e | 2335 | } |
ae986130 | 2336 | while (fdx > 0) |
6ad3d225 | 2337 | PerlLIO_close(fdtmp[--fdx]); |
fec02dd3 | 2338 | return fd; |
62b28dd9 | 2339 | #endif |
a687059c LW |
2340 | } |
2341 | #endif | |
2342 | ||
64ca3a65 | 2343 | #ifndef PERL_MICRO |
ff68c719 | 2344 | #ifdef HAS_SIGACTION |
2345 | ||
abea2c45 HS |
2346 | #ifdef MACOS_TRADITIONAL |
2347 | /* We don't want restart behavior on MacOS */ | |
2348 | #undef SA_RESTART | |
2349 | #endif | |
2350 | ||
ff68c719 | 2351 | Sighandler_t |
864dbfa3 | 2352 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2353 | { |
2354 | struct sigaction act, oact; | |
2355 | ||
a10b1e10 JH |
2356 | #ifdef USE_ITHREADS |
2357 | /* only "parent" interpreter can diddle signals */ | |
2358 | if (PL_curinterp != aTHX) | |
2359 | return SIG_ERR; | |
2360 | #endif | |
2361 | ||
ff68c719 | 2362 | act.sa_handler = handler; |
2363 | sigemptyset(&act.sa_mask); | |
2364 | act.sa_flags = 0; | |
2365 | #ifdef SA_RESTART | |
4ffa73a3 JH |
2366 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
2367 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
0a8e0eff | 2368 | #endif |
358837b8 | 2369 | #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */ |
85264bed CS |
2370 | if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN) |
2371 | act.sa_flags |= SA_NOCLDWAIT; | |
2372 | #endif | |
ff68c719 | 2373 | if (sigaction(signo, &act, &oact) == -1) |
36477c24 | 2374 | return SIG_ERR; |
ff68c719 | 2375 | else |
36477c24 | 2376 | return oact.sa_handler; |
ff68c719 | 2377 | } |
2378 | ||
2379 | Sighandler_t | |
864dbfa3 | 2380 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2381 | { |
2382 | struct sigaction oact; | |
2383 | ||
2384 | if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1) | |
3aed30dc | 2385 | return SIG_ERR; |
ff68c719 | 2386 | else |
3aed30dc | 2387 | return oact.sa_handler; |
ff68c719 | 2388 | } |
2389 | ||
2390 | int | |
864dbfa3 | 2391 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2392 | { |
2393 | struct sigaction act; | |
2394 | ||
a10b1e10 JH |
2395 | #ifdef USE_ITHREADS |
2396 | /* only "parent" interpreter can diddle signals */ | |
2397 | if (PL_curinterp != aTHX) | |
2398 | return -1; | |
2399 | #endif | |
2400 | ||
ff68c719 | 2401 | act.sa_handler = handler; |
2402 | sigemptyset(&act.sa_mask); | |
2403 | act.sa_flags = 0; | |
2404 | #ifdef SA_RESTART | |
4ffa73a3 JH |
2405 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
2406 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
0a8e0eff | 2407 | #endif |
36b5d377 | 2408 | #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */ |
85264bed CS |
2409 | if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN) |
2410 | act.sa_flags |= SA_NOCLDWAIT; | |
2411 | #endif | |
ff68c719 | 2412 | return sigaction(signo, &act, save); |
2413 | } | |
2414 | ||
2415 | int | |
864dbfa3 | 2416 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2417 | { |
a10b1e10 JH |
2418 | #ifdef USE_ITHREADS |
2419 | /* only "parent" interpreter can diddle signals */ | |
2420 | if (PL_curinterp != aTHX) | |
2421 | return -1; | |
2422 | #endif | |
2423 | ||
ff68c719 | 2424 | return sigaction(signo, save, (struct sigaction *)NULL); |
2425 | } | |
2426 | ||
2427 | #else /* !HAS_SIGACTION */ | |
2428 | ||
2429 | Sighandler_t | |
864dbfa3 | 2430 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2431 | { |
39f1703b | 2432 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2433 | /* only "parent" interpreter can diddle signals */ |
2434 | if (PL_curinterp != aTHX) | |
2435 | return SIG_ERR; | |
2436 | #endif | |
2437 | ||
6ad3d225 | 2438 | return PerlProc_signal(signo, handler); |
ff68c719 | 2439 | } |
2440 | ||
df3728a2 JH |
2441 | static int sig_trapped; /* XXX signals are process-wide anyway, so we |
2442 | ignore the implications of this for threading */ | |
ff68c719 | 2443 | |
2444 | static | |
2445 | Signal_t | |
4e35701f | 2446 | sig_trap(int signo) |
ff68c719 | 2447 | { |
2448 | sig_trapped++; | |
2449 | } | |
2450 | ||
2451 | Sighandler_t | |
864dbfa3 | 2452 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2453 | { |
2454 | Sighandler_t oldsig; | |
2455 | ||
39f1703b | 2456 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2457 | /* only "parent" interpreter can diddle signals */ |
2458 | if (PL_curinterp != aTHX) | |
2459 | return SIG_ERR; | |
2460 | #endif | |
2461 | ||
ff68c719 | 2462 | sig_trapped = 0; |
6ad3d225 GS |
2463 | oldsig = PerlProc_signal(signo, sig_trap); |
2464 | PerlProc_signal(signo, oldsig); | |
ff68c719 | 2465 | if (sig_trapped) |
3aed30dc | 2466 | PerlProc_kill(PerlProc_getpid(), signo); |
ff68c719 | 2467 | return oldsig; |
2468 | } | |
2469 | ||
2470 | int | |
864dbfa3 | 2471 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2472 | { |
39f1703b | 2473 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2474 | /* only "parent" interpreter can diddle signals */ |
2475 | if (PL_curinterp != aTHX) | |
2476 | return -1; | |
2477 | #endif | |
6ad3d225 | 2478 | *save = PerlProc_signal(signo, handler); |
ff68c719 | 2479 | return (*save == SIG_ERR) ? -1 : 0; |
2480 | } | |
2481 | ||
2482 | int | |
864dbfa3 | 2483 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2484 | { |
39f1703b | 2485 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2486 | /* only "parent" interpreter can diddle signals */ |
2487 | if (PL_curinterp != aTHX) | |
2488 | return -1; | |
2489 | #endif | |
6ad3d225 | 2490 | return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0; |
ff68c719 | 2491 | } |
2492 | ||
2493 | #endif /* !HAS_SIGACTION */ | |
64ca3a65 | 2494 | #endif /* !PERL_MICRO */ |
ff68c719 | 2495 | |
5f05dabc | 2496 | /* VMS' my_pclose() is in VMS.c; same with OS/2 */ |
cd39f2b6 | 2497 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
79072805 | 2498 | I32 |
864dbfa3 | 2499 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a687059c | 2500 | { |
ff68c719 | 2501 | Sigsave_t hstat, istat, qstat; |
a687059c | 2502 | int status; |
a0d0e21e | 2503 | SV **svp; |
d8a83dd3 JH |
2504 | Pid_t pid; |
2505 | Pid_t pid2; | |
03136e13 | 2506 | bool close_failed; |
b7953727 | 2507 | int saved_errno = 0; |
03136e13 CS |
2508 | #ifdef VMS |
2509 | int saved_vaxc_errno; | |
2510 | #endif | |
22fae026 TM |
2511 | #ifdef WIN32 |
2512 | int saved_win32_errno; | |
2513 | #endif | |
a687059c | 2514 | |
4755096e | 2515 | LOCK_FDPID_MUTEX; |
3280af22 | 2516 | svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE); |
4755096e | 2517 | UNLOCK_FDPID_MUTEX; |
25d92023 | 2518 | pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1; |
a0d0e21e | 2519 | SvREFCNT_dec(*svp); |
3280af22 | 2520 | *svp = &PL_sv_undef; |
ddcf38b7 IZ |
2521 | #ifdef OS2 |
2522 | if (pid == -1) { /* Opened by popen. */ | |
2523 | return my_syspclose(ptr); | |
2524 | } | |
a1d180c4 | 2525 | #endif |
03136e13 CS |
2526 | if ((close_failed = (PerlIO_close(ptr) == EOF))) { |
2527 | saved_errno = errno; | |
2528 | #ifdef VMS | |
2529 | saved_vaxc_errno = vaxc$errno; | |
2530 | #endif | |
22fae026 TM |
2531 | #ifdef WIN32 |
2532 | saved_win32_errno = GetLastError(); | |
2533 | #endif | |
03136e13 | 2534 | } |
7c0587c8 | 2535 | #ifdef UTS |
6ad3d225 | 2536 | if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ |
7c0587c8 | 2537 | #endif |
64ca3a65 | 2538 | #ifndef PERL_MICRO |
ff68c719 | 2539 | rsignal_save(SIGHUP, SIG_IGN, &hstat); |
2540 | rsignal_save(SIGINT, SIG_IGN, &istat); | |
2541 | rsignal_save(SIGQUIT, SIG_IGN, &qstat); | |
64ca3a65 | 2542 | #endif |
748a9306 | 2543 | do { |
1d3434b8 GS |
2544 | pid2 = wait4pid(pid, &status, 0); |
2545 | } while (pid2 == -1 && errno == EINTR); | |
64ca3a65 | 2546 | #ifndef PERL_MICRO |
ff68c719 | 2547 | rsignal_restore(SIGHUP, &hstat); |
2548 | rsignal_restore(SIGINT, &istat); | |
2549 | rsignal_restore(SIGQUIT, &qstat); | |
64ca3a65 | 2550 | #endif |
03136e13 CS |
2551 | if (close_failed) { |
2552 | SETERRNO(saved_errno, saved_vaxc_errno); | |
2553 | return -1; | |
2554 | } | |
1d3434b8 | 2555 | return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status)); |
20188a90 | 2556 | } |
4633a7c4 LW |
2557 | #endif /* !DOSISH */ |
2558 | ||
2986a63f | 2559 | #if (!defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(NETWARE)) && !defined(MACOS_TRADITIONAL) |
79072805 | 2560 | I32 |
d8a83dd3 | 2561 | Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) |
20188a90 | 2562 | { |
cddd4526 | 2563 | I32 result; |
b7953727 JH |
2564 | if (!pid) |
2565 | return -1; | |
2566 | #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) | |
2567 | { | |
3aed30dc HS |
2568 | SV *sv; |
2569 | SV** svp; | |
cf28e18a | 2570 | char spid[TYPE_CHARS(IV)]; |
20188a90 | 2571 | |
3aed30dc | 2572 | if (pid > 0) { |
7b0972df | 2573 | sprintf(spid, "%"IVdf, (IV)pid); |
3aed30dc HS |
2574 | svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE); |
2575 | if (svp && *svp != &PL_sv_undef) { | |
2576 | *statusp = SvIVX(*svp); | |
2577 | (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); | |
2578 | return pid; | |
2579 | } | |
2580 | } | |
2581 | else { | |
2582 | HE *entry; | |
2583 | ||
2584 | hv_iterinit(PL_pidstatus); | |
2585 | if ((entry = hv_iternext(PL_pidstatus))) { | |
3aed30dc HS |
2586 | pid = atoi(hv_iterkey(entry,(I32*)statusp)); |
2587 | sv = hv_iterval(PL_pidstatus,entry); | |
2588 | *statusp = SvIVX(sv); | |
2589 | sprintf(spid, "%"IVdf, (IV)pid); | |
2590 | (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); | |
2591 | return pid; | |
2592 | } | |
20188a90 LW |
2593 | } |
2594 | } | |
68a29c53 | 2595 | #endif |
79072805 | 2596 | #ifdef HAS_WAITPID |
367f3c24 IZ |
2597 | # ifdef HAS_WAITPID_RUNTIME |
2598 | if (!HAS_WAITPID_RUNTIME) | |
2599 | goto hard_way; | |
2600 | # endif | |
cddd4526 | 2601 | result = PerlProc_waitpid(pid,statusp,flags); |
dfcfdb64 | 2602 | goto finish; |
367f3c24 IZ |
2603 | #endif |
2604 | #if !defined(HAS_WAITPID) && defined(HAS_WAIT4) | |
cddd4526 | 2605 | result = wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); |
dfcfdb64 | 2606 | goto finish; |
367f3c24 IZ |
2607 | #endif |
2608 | #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) | |
2609 | hard_way: | |
a0d0e21e | 2610 | { |
a0d0e21e | 2611 | if (flags) |
cea2e8a9 | 2612 | Perl_croak(aTHX_ "Can't do waitpid with flags"); |
a0d0e21e | 2613 | else { |
76e3520e | 2614 | while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0) |
a0d0e21e LW |
2615 | pidgone(result,*statusp); |
2616 | if (result < 0) | |
2617 | *statusp = -1; | |
2618 | } | |
a687059c LW |
2619 | } |
2620 | #endif | |
dfcfdb64 | 2621 | finish: |
cddd4526 NIS |
2622 | if (result < 0 && errno == EINTR) { |
2623 | PERL_ASYNC_CHECK(); | |
2624 | } | |
2625 | return result; | |
a687059c | 2626 | } |
2986a63f | 2627 | #endif /* !DOSISH || OS2 || WIN32 || NETWARE */ |
a687059c | 2628 | |
7c0587c8 | 2629 | void |
de3bb511 | 2630 | /*SUPPRESS 590*/ |
d8a83dd3 | 2631 | Perl_pidgone(pTHX_ Pid_t pid, int status) |
a687059c | 2632 | { |
79072805 | 2633 | register SV *sv; |
cf28e18a | 2634 | char spid[TYPE_CHARS(IV)]; |
a687059c | 2635 | |
7b0972df | 2636 | sprintf(spid, "%"IVdf, (IV)pid); |
3280af22 | 2637 | sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE); |
a0d0e21e | 2638 | (void)SvUPGRADE(sv,SVt_IV); |
463ee0b2 | 2639 | SvIVX(sv) = status; |
20188a90 | 2640 | return; |
a687059c LW |
2641 | } |
2642 | ||
85ca448a | 2643 | #if defined(atarist) || defined(OS2) || defined(EPOC) |
7c0587c8 | 2644 | int pclose(); |
ddcf38b7 IZ |
2645 | #ifdef HAS_FORK |
2646 | int /* Cannot prototype with I32 | |
2647 | in os2ish.h. */ | |
ba106d47 | 2648 | my_syspclose(PerlIO *ptr) |
ddcf38b7 | 2649 | #else |
79072805 | 2650 | I32 |
864dbfa3 | 2651 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a1d180c4 | 2652 | #endif |
a687059c | 2653 | { |
760ac839 LW |
2654 | /* Needs work for PerlIO ! */ |
2655 | FILE *f = PerlIO_findFILE(ptr); | |
2656 | I32 result = pclose(f); | |
2b96b0a5 JH |
2657 | PerlIO_releaseFILE(ptr,f); |
2658 | return result; | |
2659 | } | |
2660 | #endif | |
2661 | ||
933fea7f | 2662 | #if defined(DJGPP) |
2b96b0a5 JH |
2663 | int djgpp_pclose(); |
2664 | I32 | |
2665 | Perl_my_pclose(pTHX_ PerlIO *ptr) | |
2666 | { | |
2667 | /* Needs work for PerlIO ! */ | |
2668 | FILE *f = PerlIO_findFILE(ptr); | |
2669 | I32 result = djgpp_pclose(f); | |
933fea7f | 2670 | result = (result << 8) & 0xff00; |
760ac839 LW |
2671 | PerlIO_releaseFILE(ptr,f); |
2672 | return result; | |
a687059c | 2673 | } |
7c0587c8 | 2674 | #endif |
9f68db38 LW |
2675 | |
2676 | void | |
864dbfa3 | 2677 | Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count) |
9f68db38 | 2678 | { |
79072805 | 2679 | register I32 todo; |
08105a92 | 2680 | register const char *frombase = from; |
9f68db38 LW |
2681 | |
2682 | if (len == 1) { | |
08105a92 | 2683 | register const char c = *from; |
9f68db38 | 2684 | while (count-- > 0) |
5926133d | 2685 | *to++ = c; |
9f68db38 LW |
2686 | return; |
2687 | } | |
2688 | while (count-- > 0) { | |
2689 | for (todo = len; todo > 0; todo--) { | |
2690 | *to++ = *from++; | |
2691 | } | |
2692 | from = frombase; | |
2693 | } | |
2694 | } | |
0f85fab0 | 2695 | |
fe14fcc3 | 2696 | #ifndef HAS_RENAME |
79072805 | 2697 | I32 |
864dbfa3 | 2698 | Perl_same_dirent(pTHX_ char *a, char *b) |
62b28dd9 | 2699 | { |
93a17b20 LW |
2700 | char *fa = strrchr(a,'/'); |
2701 | char *fb = strrchr(b,'/'); | |
c623ac67 GS |
2702 | Stat_t tmpstatbuf1; |
2703 | Stat_t tmpstatbuf2; | |
46fc3d4c | 2704 | SV *tmpsv = sv_newmortal(); |
62b28dd9 LW |
2705 | |
2706 | if (fa) | |
2707 | fa++; | |
2708 | else | |
2709 | fa = a; | |
2710 | if (fb) | |
2711 | fb++; | |
2712 | else | |
2713 | fb = b; | |
2714 | if (strNE(a,b)) | |
2715 | return FALSE; | |
2716 | if (fa == a) | |
46fc3d4c | 2717 | sv_setpv(tmpsv, "."); |
62b28dd9 | 2718 | else |
46fc3d4c | 2719 | sv_setpvn(tmpsv, a, fa - a); |
c6ed36e1 | 2720 | if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0) |
62b28dd9 LW |
2721 | return FALSE; |
2722 | if (fb == b) | |
46fc3d4c | 2723 | sv_setpv(tmpsv, "."); |
62b28dd9 | 2724 | else |
46fc3d4c | 2725 | sv_setpvn(tmpsv, b, fb - b); |
c6ed36e1 | 2726 | if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0) |
62b28dd9 LW |
2727 | return FALSE; |
2728 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
2729 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
2730 | } | |
fe14fcc3 LW |
2731 | #endif /* !HAS_RENAME */ |
2732 | ||
491527d0 | 2733 | char* |
864dbfa3 | 2734 | Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags) |
491527d0 | 2735 | { |
491527d0 GS |
2736 | char *xfound = Nullch; |
2737 | char *xfailed = Nullch; | |
0f31cffe | 2738 | char tmpbuf[MAXPATHLEN]; |
491527d0 | 2739 | register char *s; |
5f74f29c | 2740 | I32 len = 0; |
491527d0 GS |
2741 | int retval; |
2742 | #if defined(DOSISH) && !defined(OS2) && !defined(atarist) | |
2743 | # define SEARCH_EXTS ".bat", ".cmd", NULL | |
2744 | # define MAX_EXT_LEN 4 | |
2745 | #endif | |
2746 | #ifdef OS2 | |
2747 | # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL | |
2748 | # define MAX_EXT_LEN 4 | |
2749 | #endif | |
2750 | #ifdef VMS | |
2751 | # define SEARCH_EXTS ".pl", ".com", NULL | |
2752 | # define MAX_EXT_LEN 4 | |
2753 | #endif | |
2754 | /* additional extensions to try in each dir if scriptname not found */ | |
2755 | #ifdef SEARCH_EXTS | |
2756 | char *exts[] = { SEARCH_EXTS }; | |
2757 | char **ext = search_ext ? search_ext : exts; | |
2758 | int extidx = 0, i = 0; | |
2759 | char *curext = Nullch; | |
2760 | #else | |
2761 | # define MAX_EXT_LEN 0 | |
2762 | #endif | |
2763 | ||
2764 | /* | |
2765 | * If dosearch is true and if scriptname does not contain path | |
2766 | * delimiters, search the PATH for scriptname. | |
2767 | * | |
2768 | * If SEARCH_EXTS is also defined, will look for each | |
2769 | * scriptname{SEARCH_EXTS} whenever scriptname is not found | |
2770 | * while searching the PATH. | |
2771 | * | |
2772 | * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search | |
2773 | * proceeds as follows: | |
2774 | * If DOSISH or VMSISH: | |
2775 | * + look for ./scriptname{,.foo,.bar} | |
2776 | * + search the PATH for scriptname{,.foo,.bar} | |
2777 | * | |
2778 | * If !DOSISH: | |
2779 | * + look *only* in the PATH for scriptname{,.foo,.bar} (note | |
2780 | * this will not look in '.' if it's not in the PATH) | |
2781 | */ | |
84486fc6 | 2782 | tmpbuf[0] = '\0'; |
491527d0 GS |
2783 | |
2784 | #ifdef VMS | |
2785 | # ifdef ALWAYS_DEFTYPES | |
2786 | len = strlen(scriptname); | |
2787 | if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { | |
2788 | int hasdir, idx = 0, deftypes = 1; | |
2789 | bool seen_dot = 1; | |
2790 | ||
2791 | hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ; | |
2792 | # else | |
2793 | if (dosearch) { | |
2794 | int hasdir, idx = 0, deftypes = 1; | |
2795 | bool seen_dot = 1; | |
2796 | ||
2797 | hasdir = (strpbrk(scriptname,":[</") != Nullch) ; | |
2798 | # endif | |
2799 | /* The first time through, just add SEARCH_EXTS to whatever we | |
2800 | * already have, so we can check for default file types. */ | |
2801 | while (deftypes || | |
84486fc6 | 2802 | (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) ) |
491527d0 GS |
2803 | { |
2804 | if (deftypes) { | |
2805 | deftypes = 0; | |
84486fc6 | 2806 | *tmpbuf = '\0'; |
491527d0 | 2807 | } |
84486fc6 GS |
2808 | if ((strlen(tmpbuf) + strlen(scriptname) |
2809 | + MAX_EXT_LEN) >= sizeof tmpbuf) | |
491527d0 | 2810 | continue; /* don't search dir with too-long name */ |
84486fc6 | 2811 | strcat(tmpbuf, scriptname); |
491527d0 GS |
2812 | #else /* !VMS */ |
2813 | ||
2814 | #ifdef DOSISH | |
2815 | if (strEQ(scriptname, "-")) | |
2816 | dosearch = 0; | |
2817 | if (dosearch) { /* Look in '.' first. */ | |
2818 | char *cur = scriptname; | |
2819 | #ifdef SEARCH_EXTS | |
2820 | if ((curext = strrchr(scriptname,'.'))) /* possible current ext */ | |
2821 | while (ext[i]) | |
2822 | if (strEQ(ext[i++],curext)) { | |
2823 | extidx = -1; /* already has an ext */ | |
2824 | break; | |
2825 | } | |
2826 | do { | |
2827 | #endif | |
2828 | DEBUG_p(PerlIO_printf(Perl_debug_log, | |
2829 | "Looking for %s\n",cur)); | |
017f25f1 IZ |
2830 | if (PerlLIO_stat(cur,&PL_statbuf) >= 0 |
2831 | && !S_ISDIR(PL_statbuf.st_mode)) { | |
491527d0 GS |
2832 | dosearch = 0; |
2833 | scriptname = cur; | |
2834 | #ifdef SEARCH_EXTS | |
2835 | break; | |
2836 | #endif | |
2837 | } | |
2838 | #ifdef SEARCH_EXTS | |
2839 | if (cur == scriptname) { | |
2840 | len = strlen(scriptname); | |
84486fc6 | 2841 | if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf)) |
491527d0 | 2842 | break; |
84486fc6 | 2843 | cur = strcpy(tmpbuf, scriptname); |
491527d0 GS |
2844 | } |
2845 | } while (extidx >= 0 && ext[extidx] /* try an extension? */ | |
84486fc6 | 2846 | && strcpy(tmpbuf+len, ext[extidx++])); |
491527d0 GS |
2847 | #endif |
2848 | } | |
2849 | #endif | |
2850 | ||
cd39f2b6 JH |
2851 | #ifdef MACOS_TRADITIONAL |
2852 | if (dosearch && !strchr(scriptname, ':') && | |
2853 | (s = PerlEnv_getenv("Commands"))) | |
2854 | #else | |
491527d0 GS |
2855 | if (dosearch && !strchr(scriptname, '/') |
2856 | #ifdef DOSISH | |
2857 | && !strchr(scriptname, '\\') | |
2858 | #endif | |
cd39f2b6 JH |
2859 | && (s = PerlEnv_getenv("PATH"))) |
2860 | #endif | |
2861 | { | |
491527d0 | 2862 | bool seen_dot = 0; |
92f0c265 | 2863 | |
3280af22 NIS |
2864 | PL_bufend = s + strlen(s); |
2865 | while (s < PL_bufend) { | |
cd39f2b6 JH |
2866 | #ifdef MACOS_TRADITIONAL |
2867 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend, | |
2868 | ',', | |
2869 | &len); | |
2870 | #else | |
491527d0 GS |
2871 | #if defined(atarist) || defined(DOSISH) |
2872 | for (len = 0; *s | |
2873 | # ifdef atarist | |
2874 | && *s != ',' | |
2875 | # endif | |
2876 | && *s != ';'; len++, s++) { | |
84486fc6 GS |
2877 | if (len < sizeof tmpbuf) |
2878 | tmpbuf[len] = *s; | |
491527d0 | 2879 | } |
84486fc6 GS |
2880 | if (len < sizeof tmpbuf) |
2881 | tmpbuf[len] = '\0'; | |
491527d0 | 2882 | #else /* ! (atarist || DOSISH) */ |
3280af22 | 2883 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend, |
491527d0 GS |
2884 | ':', |
2885 | &len); | |
2886 | #endif /* ! (atarist || DOSISH) */ | |
cd39f2b6 | 2887 | #endif /* MACOS_TRADITIONAL */ |
3280af22 | 2888 | if (s < PL_bufend) |
491527d0 | 2889 | s++; |
84486fc6 | 2890 | if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf) |
491527d0 | 2891 | continue; /* don't search dir with too-long name */ |
cd39f2b6 JH |
2892 | #ifdef MACOS_TRADITIONAL |
2893 | if (len && tmpbuf[len - 1] != ':') | |
2894 | tmpbuf[len++] = ':'; | |
2895 | #else | |
491527d0 | 2896 | if (len |
61ae2fbf | 2897 | #if defined(atarist) || defined(__MINT__) || defined(DOSISH) |
84486fc6 GS |
2898 | && tmpbuf[len - 1] != '/' |
2899 | && tmpbuf[len - 1] != '\\' | |
491527d0 GS |
2900 | #endif |
2901 | ) | |
84486fc6 GS |
2902 | tmpbuf[len++] = '/'; |
2903 | if (len == 2 && tmpbuf[0] == '.') | |
491527d0 | 2904 | seen_dot = 1; |
cd39f2b6 | 2905 | #endif |
84486fc6 | 2906 | (void)strcpy(tmpbuf + len, scriptname); |
491527d0 GS |
2907 | #endif /* !VMS */ |
2908 | ||
2909 | #ifdef SEARCH_EXTS | |
84486fc6 | 2910 | len = strlen(tmpbuf); |
491527d0 GS |
2911 | if (extidx > 0) /* reset after previous loop */ |
2912 | extidx = 0; | |
2913 | do { | |
2914 | #endif | |
84486fc6 | 2915 | DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf)); |
3280af22 | 2916 | retval = PerlLIO_stat(tmpbuf,&PL_statbuf); |
017f25f1 IZ |
2917 | if (S_ISDIR(PL_statbuf.st_mode)) { |
2918 | retval = -1; | |
2919 | } | |
491527d0 GS |
2920 | #ifdef SEARCH_EXTS |
2921 | } while ( retval < 0 /* not there */ | |
2922 | && extidx>=0 && ext[extidx] /* try an extension? */ | |
84486fc6 | 2923 | && strcpy(tmpbuf+len, ext[extidx++]) |
491527d0 GS |
2924 | ); |
2925 | #endif | |
2926 | if (retval < 0) | |
2927 | continue; | |
3280af22 NIS |
2928 | if (S_ISREG(PL_statbuf.st_mode) |
2929 | && cando(S_IRUSR,TRUE,&PL_statbuf) | |
73811745 | 2930 | #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL) |
3280af22 | 2931 | && cando(S_IXUSR,TRUE,&PL_statbuf) |
491527d0 GS |
2932 | #endif |
2933 | ) | |
2934 | { | |
3aed30dc | 2935 | xfound = tmpbuf; /* bingo! */ |
491527d0 GS |
2936 | break; |
2937 | } | |
2938 | if (!xfailed) | |
84486fc6 | 2939 | xfailed = savepv(tmpbuf); |
491527d0 GS |
2940 | } |
2941 | #ifndef DOSISH | |
017f25f1 | 2942 | if (!xfound && !seen_dot && !xfailed && |
a1d180c4 | 2943 | (PerlLIO_stat(scriptname,&PL_statbuf) < 0 |
017f25f1 | 2944 | || S_ISDIR(PL_statbuf.st_mode))) |
491527d0 GS |
2945 | #endif |
2946 | seen_dot = 1; /* Disable message. */ | |
9ccb31f9 GS |
2947 | if (!xfound) { |
2948 | if (flags & 1) { /* do or die? */ | |
3aed30dc | 2949 | Perl_croak(aTHX_ "Can't %s %s%s%s", |
9ccb31f9 GS |
2950 | (xfailed ? "execute" : "find"), |
2951 | (xfailed ? xfailed : scriptname), | |
2952 | (xfailed ? "" : " on PATH"), | |
2953 | (xfailed || seen_dot) ? "" : ", '.' not in PATH"); | |
2954 | } | |
2955 | scriptname = Nullch; | |
2956 | } | |
491527d0 GS |
2957 | if (xfailed) |
2958 | Safefree(xfailed); | |
2959 | scriptname = xfound; | |
2960 | } | |
9ccb31f9 | 2961 | return (scriptname ? savepv(scriptname) : Nullch); |
491527d0 GS |
2962 | } |
2963 | ||
ba869deb GS |
2964 | #ifndef PERL_GET_CONTEXT_DEFINED |
2965 | ||
2966 | void * | |
2967 | Perl_get_context(void) | |
2968 | { | |
3db8f154 | 2969 | #if defined(USE_ITHREADS) |
ba869deb GS |
2970 | # ifdef OLD_PTHREADS_API |
2971 | pthread_addr_t t; | |
2972 | if (pthread_getspecific(PL_thr_key, &t)) | |
2973 | Perl_croak_nocontext("panic: pthread_getspecific"); | |
2974 | return (void*)t; | |
2975 | # else | |
bce813aa | 2976 | # ifdef I_MACH_CTHREADS |
8b8b35ab | 2977 | return (void*)cthread_data(cthread_self()); |
bce813aa | 2978 | # else |
8b8b35ab JH |
2979 | return (void*)PTHREAD_GETSPECIFIC(PL_thr_key); |
2980 | # endif | |
c44d3fdb | 2981 | # endif |
ba869deb GS |
2982 | #else |
2983 | return (void*)NULL; | |
2984 | #endif | |
2985 | } | |
2986 | ||
2987 | void | |
2988 | Perl_set_context(void *t) | |
2989 | { | |
3db8f154 | 2990 | #if defined(USE_ITHREADS) |
c44d3fdb GS |
2991 | # ifdef I_MACH_CTHREADS |
2992 | cthread_set_data(cthread_self(), t); | |
2993 | # else | |
ba869deb GS |
2994 | if (pthread_setspecific(PL_thr_key, t)) |
2995 | Perl_croak_nocontext("panic: pthread_setspecific"); | |
c44d3fdb | 2996 | # endif |
ba869deb GS |
2997 | #endif |
2998 | } | |
2999 | ||
3000 | #endif /* !PERL_GET_CONTEXT_DEFINED */ | |
491527d0 | 3001 | |
22239a37 NIS |
3002 | #ifdef PERL_GLOBAL_STRUCT |
3003 | struct perl_vars * | |
864dbfa3 | 3004 | Perl_GetVars(pTHX) |
22239a37 | 3005 | { |
533c011a | 3006 | return &PL_Vars; |
22239a37 | 3007 | } |
31fb1209 NIS |
3008 | #endif |
3009 | ||
3010 | char ** | |
864dbfa3 | 3011 | Perl_get_op_names(pTHX) |
31fb1209 | 3012 | { |
22c35a8c | 3013 | return PL_op_name; |
31fb1209 NIS |
3014 | } |
3015 | ||
3016 | char ** | |
864dbfa3 | 3017 | Perl_get_op_descs(pTHX) |
31fb1209 | 3018 | { |
22c35a8c | 3019 | return PL_op_desc; |
31fb1209 | 3020 | } |
9e6b2b00 GS |
3021 | |
3022 | char * | |
864dbfa3 | 3023 | Perl_get_no_modify(pTHX) |
9e6b2b00 | 3024 | { |
22c35a8c | 3025 | return (char*)PL_no_modify; |
9e6b2b00 GS |
3026 | } |
3027 | ||
3028 | U32 * | |
864dbfa3 | 3029 | Perl_get_opargs(pTHX) |
9e6b2b00 | 3030 | { |
22c35a8c | 3031 | return PL_opargs; |
9e6b2b00 | 3032 | } |
51aa15f3 | 3033 | |
0cb96387 GS |
3034 | PPADDR_t* |
3035 | Perl_get_ppaddr(pTHX) | |
3036 | { | |
12ae5dfc | 3037 | return (PPADDR_t*)PL_ppaddr; |
0cb96387 GS |
3038 | } |
3039 | ||
a6c40364 GS |
3040 | #ifndef HAS_GETENV_LEN |
3041 | char * | |
bf4acbe4 | 3042 | Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len) |
a6c40364 GS |
3043 | { |
3044 | char *env_trans = PerlEnv_getenv(env_elem); | |
3045 | if (env_trans) | |
3046 | *len = strlen(env_trans); | |
3047 | return env_trans; | |
f675dbe5 CB |
3048 | } |
3049 | #endif | |
3050 | ||
dc9e4912 GS |
3051 | |
3052 | MGVTBL* | |
864dbfa3 | 3053 | Perl_get_vtbl(pTHX_ int vtbl_id) |
dc9e4912 GS |
3054 | { |
3055 | MGVTBL* result = Null(MGVTBL*); | |
3056 | ||
3057 | switch(vtbl_id) { | |
3058 | case want_vtbl_sv: | |
3059 | result = &PL_vtbl_sv; | |
3060 | break; | |
3061 | case want_vtbl_env: | |
3062 | result = &PL_vtbl_env; | |
3063 | break; | |
3064 | case want_vtbl_envelem: | |
3065 | result = &PL_vtbl_envelem; | |
3066 | break; | |
3067 | case want_vtbl_sig: | |
3068 | result = &PL_vtbl_sig; | |
3069 | break; | |
3070 | case want_vtbl_sigelem: | |
3071 | result = &PL_vtbl_sigelem; | |
3072 | break; | |
3073 | case want_vtbl_pack: | |
3074 | result = &PL_vtbl_pack; | |
3075 | break; | |
3076 | case want_vtbl_packelem: | |
3077 | result = &PL_vtbl_packelem; | |
3078 | break; | |
3079 | case want_vtbl_dbline: | |
3080 | result = &PL_vtbl_dbline; | |
3081 | break; | |
3082 | case want_vtbl_isa: | |
3083 | result = &PL_vtbl_isa; | |
3084 | break; | |
3085 | case want_vtbl_isaelem: | |
3086 | result = &PL_vtbl_isaelem; | |
3087 | break; | |
3088 | case want_vtbl_arylen: | |
3089 | result = &PL_vtbl_arylen; | |
3090 | break; | |
3091 | case want_vtbl_glob: | |
3092 | result = &PL_vtbl_glob; | |
3093 | break; | |
3094 | case want_vtbl_mglob: | |
3095 | result = &PL_vtbl_mglob; | |
3096 | break; | |
3097 | case want_vtbl_nkeys: | |
3098 | result = &PL_vtbl_nkeys; | |
3099 | break; | |
3100 | case want_vtbl_taint: | |
3101 | result = &PL_vtbl_taint; | |
3102 | break; | |
3103 | case want_vtbl_substr: | |
3104 | result = &PL_vtbl_substr; | |
3105 | break; | |
3106 | case want_vtbl_vec: | |
3107 | result = &PL_vtbl_vec; | |
3108 | break; | |
3109 | case want_vtbl_pos: | |
3110 | result = &PL_vtbl_pos; | |
3111 | break; | |
3112 | case want_vtbl_bm: | |
3113 | result = &PL_vtbl_bm; | |
3114 | break; | |
3115 | case want_vtbl_fm: | |
3116 | result = &PL_vtbl_fm; | |
3117 | break; | |
3118 | case want_vtbl_uvar: | |
3119 | result = &PL_vtbl_uvar; | |
3120 | break; | |
dc9e4912 GS |
3121 | case want_vtbl_defelem: |
3122 | result = &PL_vtbl_defelem; | |
3123 | break; | |
3124 | case want_vtbl_regexp: | |
3125 | result = &PL_vtbl_regexp; | |
3126 | break; | |
3127 | case want_vtbl_regdata: | |
3128 | result = &PL_vtbl_regdata; | |
3129 | break; | |
3130 | case want_vtbl_regdatum: | |
3131 | result = &PL_vtbl_regdatum; | |
3132 | break; | |
3c90161d | 3133 | #ifdef USE_LOCALE_COLLATE |
dc9e4912 GS |
3134 | case want_vtbl_collxfrm: |
3135 | result = &PL_vtbl_collxfrm; | |
3136 | break; | |
3c90161d | 3137 | #endif |
dc9e4912 GS |
3138 | case want_vtbl_amagic: |
3139 | result = &PL_vtbl_amagic; | |
3140 | break; | |
3141 | case want_vtbl_amagicelem: | |
3142 | result = &PL_vtbl_amagicelem; | |
3143 | break; | |
810b8aa5 GS |
3144 | case want_vtbl_backref: |
3145 | result = &PL_vtbl_backref; | |
3146 | break; | |
7e8c5dac HS |
3147 | case want_vtbl_utf8: |
3148 | result = &PL_vtbl_utf8; | |
3149 | break; | |
dc9e4912 GS |
3150 | } |
3151 | return result; | |
3152 | } | |
3153 | ||
767df6a1 | 3154 | I32 |
864dbfa3 | 3155 | Perl_my_fflush_all(pTHX) |
767df6a1 | 3156 | { |
f800e14d | 3157 | #if defined(USE_PERLIO) || defined(FFLUSH_NULL) || defined(USE_SFIO) |
ce720889 | 3158 | return PerlIO_flush(NULL); |
767df6a1 | 3159 | #else |
8fbdfb7c | 3160 | # if defined(HAS__FWALK) |
f13a2bc0 | 3161 | extern int fflush(FILE *); |
74cac757 JH |
3162 | /* undocumented, unprototyped, but very useful BSDism */ |
3163 | extern void _fwalk(int (*)(FILE *)); | |
8fbdfb7c | 3164 | _fwalk(&fflush); |
74cac757 | 3165 | return 0; |
8fa7f367 | 3166 | # else |
8fbdfb7c | 3167 | # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY) |
8fa7f367 | 3168 | long open_max = -1; |
8fbdfb7c | 3169 | # ifdef PERL_FFLUSH_ALL_FOPEN_MAX |
d2201af2 | 3170 | open_max = PERL_FFLUSH_ALL_FOPEN_MAX; |
8fbdfb7c | 3171 | # else |
8fa7f367 | 3172 | # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX) |
767df6a1 | 3173 | open_max = sysconf(_SC_OPEN_MAX); |
8fa7f367 JH |
3174 | # else |
3175 | # ifdef FOPEN_MAX | |
74cac757 | 3176 | open_max = FOPEN_MAX; |
8fa7f367 JH |
3177 | # else |
3178 | # ifdef OPEN_MAX | |
74cac757 | 3179 | open_max = OPEN_MAX; |
8fa7f367 JH |
3180 | # else |
3181 | # ifdef _NFILE | |
d2201af2 | 3182 | open_max = _NFILE; |
8fa7f367 JH |
3183 | # endif |
3184 | # endif | |
74cac757 | 3185 | # endif |
767df6a1 JH |
3186 | # endif |
3187 | # endif | |
767df6a1 JH |
3188 | if (open_max > 0) { |
3189 | long i; | |
3190 | for (i = 0; i < open_max; i++) | |
d2201af2 AD |
3191 | if (STDIO_STREAM_ARRAY[i]._file >= 0 && |
3192 | STDIO_STREAM_ARRAY[i]._file < open_max && | |
3193 | STDIO_STREAM_ARRAY[i]._flag) | |
3194 | PerlIO_flush(&STDIO_STREAM_ARRAY[i]); | |
767df6a1 JH |
3195 | return 0; |
3196 | } | |
8fbdfb7c | 3197 | # endif |
93189314 | 3198 | SETERRNO(EBADF,RMS_IFI); |
767df6a1 | 3199 | return EOF; |
74cac757 | 3200 | # endif |
767df6a1 JH |
3201 | #endif |
3202 | } | |
097ee67d | 3203 | |
69282e91 | 3204 | void |
bc37a18f RG |
3205 | Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op) |
3206 | { | |
bc37a18f | 3207 | char *func = |
66fc2fa5 JH |
3208 | op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */ |
3209 | op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */ | |
bc37a18f RG |
3210 | PL_op_desc[op]; |
3211 | char *pars = OP_IS_FILETEST(op) ? "" : "()"; | |
3aed30dc HS |
3212 | char *type = OP_IS_SOCKET(op) |
3213 | || (gv && io && IoTYPE(io) == IoTYPE_SOCKET) | |
3214 | ? "socket" : "filehandle"; | |
9c0fcd4f | 3215 | char *name = NULL; |
bc37a18f | 3216 | |
66fc2fa5 | 3217 | if (gv && isGV(gv)) { |
f62cb720 | 3218 | name = GvENAME(gv); |
66fc2fa5 JH |
3219 | } |
3220 | ||
4c80c0b2 | 3221 | if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) { |
3aed30dc | 3222 | if (ckWARN(WARN_IO)) { |
fd322ea4 | 3223 | const char *direction = (op == OP_phoney_INPUT_ONLY) ? "in" : "out"; |
3aed30dc HS |
3224 | if (name && *name) |
3225 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
3226 | "Filehandle %s opened only for %sput", | |
fd322ea4 | 3227 | name, direction); |
3aed30dc HS |
3228 | else |
3229 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
fd322ea4 | 3230 | "Filehandle opened only for %sput", direction); |
3aed30dc | 3231 | } |
2dd78f96 JH |
3232 | } |
3233 | else { | |
3aed30dc HS |
3234 | char *vile; |
3235 | I32 warn_type; | |
3236 | ||
3237 | if (gv && io && IoTYPE(io) == IoTYPE_CLOSED) { | |
3238 | vile = "closed"; | |
3239 | warn_type = WARN_CLOSED; | |
3240 | } | |
3241 | else { | |
3242 | vile = "unopened"; | |
3243 | warn_type = WARN_UNOPENED; | |
3244 | } | |
3245 | ||
3246 | if (ckWARN(warn_type)) { | |
3247 | if (name && *name) { | |
3248 | Perl_warner(aTHX_ packWARN(warn_type), | |
3249 | "%s%s on %s %s %s", func, pars, vile, type, name); | |
3250 | if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) | |
3251 | Perl_warner( | |
3252 | aTHX_ packWARN(warn_type), | |
3253 | "\t(Are you trying to call %s%s on dirhandle %s?)\n", | |
3254 | func, pars, name | |
3255 | ); | |
3256 | } | |
3257 | else { | |
3258 | Perl_warner(aTHX_ packWARN(warn_type), | |
3259 | "%s%s on %s %s", func, pars, vile, type); | |
3260 | if (gv && io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) | |
3261 | Perl_warner( | |
3262 | aTHX_ packWARN(warn_type), | |
3263 | "\t(Are you trying to call %s%s on dirhandle?)\n", | |
3264 | func, pars | |
3265 | ); | |
3266 | } | |
3267 | } | |
bc37a18f | 3268 | } |
69282e91 | 3269 | } |
a926ef6b JH |
3270 | |
3271 | #ifdef EBCDIC | |
cbebf344 JH |
3272 | /* in ASCII order, not that it matters */ |
3273 | static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; | |
3274 | ||
a926ef6b JH |
3275 | int |
3276 | Perl_ebcdic_control(pTHX_ int ch) | |
3277 | { | |
3aed30dc HS |
3278 | if (ch > 'a') { |
3279 | char *ctlp; | |
3280 | ||
3281 | if (islower(ch)) | |
3282 | ch = toupper(ch); | |
3283 | ||
3284 | if ((ctlp = strchr(controllablechars, ch)) == 0) { | |
3285 | Perl_die(aTHX_ "unrecognised control character '%c'\n", ch); | |
a926ef6b | 3286 | } |
3aed30dc HS |
3287 | |
3288 | if (ctlp == controllablechars) | |
3289 | return('\177'); /* DEL */ | |
3290 | else | |
3291 | return((unsigned char)(ctlp - controllablechars - 1)); | |
3292 | } else { /* Want uncontrol */ | |
3293 | if (ch == '\177' || ch == -1) | |
3294 | return('?'); | |
3295 | else if (ch == '\157') | |
3296 | return('\177'); | |
3297 | else if (ch == '\174') | |
3298 | return('\000'); | |
3299 | else if (ch == '^') /* '\137' in 1047, '\260' in 819 */ | |
3300 | return('\036'); | |
3301 | else if (ch == '\155') | |
3302 | return('\037'); | |
3303 | else if (0 < ch && ch < (sizeof(controllablechars) - 1)) | |
3304 | return(controllablechars[ch+1]); | |
3305 | else | |
3306 | Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF); | |
3307 | } | |
a926ef6b JH |
3308 | } |
3309 | #endif | |
e72cf795 | 3310 | |
f6adc668 | 3311 | /* To workaround core dumps from the uninitialised tm_zone we get the |
e72cf795 JH |
3312 | * system to give us a reasonable struct to copy. This fix means that |
3313 | * strftime uses the tm_zone and tm_gmtoff values returned by | |
3314 | * localtime(time()). That should give the desired result most of the | |
3315 | * time. But probably not always! | |
3316 | * | |
f6adc668 JH |
3317 | * This does not address tzname aspects of NETaa14816. |
3318 | * | |
e72cf795 | 3319 | */ |
f6adc668 | 3320 | |
e72cf795 JH |
3321 | #ifdef HAS_GNULIBC |
3322 | # ifndef STRUCT_TM_HASZONE | |
3323 | # define STRUCT_TM_HASZONE | |
3324 | # endif | |
3325 | #endif | |
3326 | ||
f6adc668 JH |
3327 | #ifdef STRUCT_TM_HASZONE /* Backward compat */ |
3328 | # ifndef HAS_TM_TM_ZONE | |
3329 | # define HAS_TM_TM_ZONE | |
3330 | # endif | |
3331 | #endif | |
3332 | ||
e72cf795 | 3333 | void |
f1208910 | 3334 | Perl_init_tm(pTHX_ struct tm *ptm) /* see mktime, strftime and asctime */ |
e72cf795 | 3335 | { |
f6adc668 | 3336 | #ifdef HAS_TM_TM_ZONE |
e72cf795 JH |
3337 | Time_t now; |
3338 | (void)time(&now); | |
3339 | Copy(localtime(&now), ptm, 1, struct tm); | |
3340 | #endif | |
3341 | } | |
3342 | ||
3343 | /* | |
3344 | * mini_mktime - normalise struct tm values without the localtime() | |
3345 | * semantics (and overhead) of mktime(). | |
3346 | */ | |
3347 | void | |
f1208910 | 3348 | Perl_mini_mktime(pTHX_ struct tm *ptm) |
e72cf795 JH |
3349 | { |
3350 | int yearday; | |
3351 | int secs; | |
3352 | int month, mday, year, jday; | |
3353 | int odd_cent, odd_year; | |
3354 | ||
3355 | #define DAYS_PER_YEAR 365 | |
3356 | #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1) | |
3357 | #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1) | |
3358 | #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1) | |
3359 | #define SECS_PER_HOUR (60*60) | |
3360 | #define SECS_PER_DAY (24*SECS_PER_HOUR) | |
3361 | /* parentheses deliberately absent on these two, otherwise they don't work */ | |
3362 | #define MONTH_TO_DAYS 153/5 | |
3363 | #define DAYS_TO_MONTH 5/153 | |
3364 | /* offset to bias by March (month 4) 1st between month/mday & year finding */ | |
3365 | #define YEAR_ADJUST (4*MONTH_TO_DAYS+1) | |
3366 | /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */ | |
3367 | #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */ | |
3368 | ||
3369 | /* | |
3370 | * Year/day algorithm notes: | |
3371 | * | |
3372 | * With a suitable offset for numeric value of the month, one can find | |
3373 | * an offset into the year by considering months to have 30.6 (153/5) days, | |
3374 | * using integer arithmetic (i.e., with truncation). To avoid too much | |
3375 | * messing about with leap days, we consider January and February to be | |
3376 | * the 13th and 14th month of the previous year. After that transformation, | |
3377 | * we need the month index we use to be high by 1 from 'normal human' usage, | |
3378 | * so the month index values we use run from 4 through 15. | |
3379 | * | |
3380 | * Given that, and the rules for the Gregorian calendar (leap years are those | |
3381 | * divisible by 4 unless also divisible by 100, when they must be divisible | |
3382 | * by 400 instead), we can simply calculate the number of days since some | |
3383 | * arbitrary 'beginning of time' by futzing with the (adjusted) year number, | |
3384 | * the days we derive from our month index, and adding in the day of the | |
3385 | * month. The value used here is not adjusted for the actual origin which | |
3386 | * it normally would use (1 January A.D. 1), since we're not exposing it. | |
3387 | * We're only building the value so we can turn around and get the | |
3388 | * normalised values for the year, month, day-of-month, and day-of-year. | |
3389 | * | |
3390 | * For going backward, we need to bias the value we're using so that we find | |
3391 | * the right year value. (Basically, we don't want the contribution of | |
3392 | * March 1st to the number to apply while deriving the year). Having done | |
3393 | * that, we 'count up' the contribution to the year number by accounting for | |
3394 | * full quadracenturies (400-year periods) with their extra leap days, plus | |
3395 | * the contribution from full centuries (to avoid counting in the lost leap | |
3396 | * days), plus the contribution from full quad-years (to count in the normal | |
3397 | * leap days), plus the leftover contribution from any non-leap years. | |
3398 | * At this point, if we were working with an actual leap day, we'll have 0 | |
3399 | * days left over. This is also true for March 1st, however. So, we have | |
3400 | * to special-case that result, and (earlier) keep track of the 'odd' | |
3401 | * century and year contributions. If we got 4 extra centuries in a qcent, | |
3402 | * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb. | |
3403 | * Otherwise, we add back in the earlier bias we removed (the 123 from | |
3404 | * figuring in March 1st), find the month index (integer division by 30.6), | |
3405 | * and the remainder is the day-of-month. We then have to convert back to | |
3406 | * 'real' months (including fixing January and February from being 14/15 in | |
3407 | * the previous year to being in the proper year). After that, to get | |
3408 | * tm_yday, we work with the normalised year and get a new yearday value for | |
3409 | * January 1st, which we subtract from the yearday value we had earlier, | |
3410 | * representing the date we've re-built. This is done from January 1 | |
3411 | * because tm_yday is 0-origin. | |
3412 | * | |
3413 | * Since POSIX time routines are only guaranteed to work for times since the | |
3414 | * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm | |
3415 | * applies Gregorian calendar rules even to dates before the 16th century | |
3416 | * doesn't bother me. Besides, you'd need cultural context for a given | |
3417 | * date to know whether it was Julian or Gregorian calendar, and that's | |
3418 | * outside the scope for this routine. Since we convert back based on the | |
3419 | * same rules we used to build the yearday, you'll only get strange results | |
3420 | * for input which needed normalising, or for the 'odd' century years which | |
3421 | * were leap years in the Julian calander but not in the Gregorian one. | |
3422 | * I can live with that. | |
3423 | * | |
3424 | * This algorithm also fails to handle years before A.D. 1 gracefully, but | |
3425 | * that's still outside the scope for POSIX time manipulation, so I don't | |
3426 | * care. | |
3427 | */ | |
3428 | ||
3429 | year = 1900 + ptm->tm_year; | |
3430 | month = ptm->tm_mon; | |
3431 | mday = ptm->tm_mday; | |
3432 | /* allow given yday with no month & mday to dominate the result */ | |
3433 | if (ptm->tm_yday >= 0 && mday <= 0 && month <= 0) { | |
3434 | month = 0; | |
3435 | mday = 0; | |
3436 | jday = 1 + ptm->tm_yday; | |
3437 | } | |
3438 | else { | |
3439 | jday = 0; | |
3440 | } | |
3441 | if (month >= 2) | |
3442 | month+=2; | |
3443 | else | |
3444 | month+=14, year--; | |
3445 | yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400; | |
3446 | yearday += month*MONTH_TO_DAYS + mday + jday; | |
3447 | /* | |
3448 | * Note that we don't know when leap-seconds were or will be, | |
3449 | * so we have to trust the user if we get something which looks | |
3450 | * like a sensible leap-second. Wild values for seconds will | |
3451 | * be rationalised, however. | |
3452 | */ | |
3453 | if ((unsigned) ptm->tm_sec <= 60) { | |
3454 | secs = 0; | |
3455 | } | |
3456 | else { | |
3457 | secs = ptm->tm_sec; | |
3458 | ptm->tm_sec = 0; | |
3459 | } | |
3460 | secs += 60 * ptm->tm_min; | |
3461 | secs += SECS_PER_HOUR * ptm->tm_hour; | |
3462 | if (secs < 0) { | |
3463 | if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) { | |
3464 | /* got negative remainder, but need positive time */ | |
3465 | /* back off an extra day to compensate */ | |
3466 | yearday += (secs/SECS_PER_DAY)-1; | |
3467 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1); | |
3468 | } | |
3469 | else { | |
3470 | yearday += (secs/SECS_PER_DAY); | |
3471 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY); | |
3472 | } | |
3473 | } | |
3474 | else if (secs >= SECS_PER_DAY) { | |
3475 | yearday += (secs/SECS_PER_DAY); | |
3476 | secs %= SECS_PER_DAY; | |
3477 | } | |
3478 | ptm->tm_hour = secs/SECS_PER_HOUR; | |
3479 | secs %= SECS_PER_HOUR; | |
3480 | ptm->tm_min = secs/60; | |
3481 | secs %= 60; | |
3482 | ptm->tm_sec += secs; | |
3483 | /* done with time of day effects */ | |
3484 | /* | |
3485 | * The algorithm for yearday has (so far) left it high by 428. | |
3486 | * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to | |
3487 | * bias it by 123 while trying to figure out what year it | |
3488 | * really represents. Even with this tweak, the reverse | |
3489 | * translation fails for years before A.D. 0001. | |
3490 | * It would still fail for Feb 29, but we catch that one below. | |
3491 | */ | |
3492 | jday = yearday; /* save for later fixup vis-a-vis Jan 1 */ | |
3493 | yearday -= YEAR_ADJUST; | |
3494 | year = (yearday / DAYS_PER_QCENT) * 400; | |
3495 | yearday %= DAYS_PER_QCENT; | |
3496 | odd_cent = yearday / DAYS_PER_CENT; | |
3497 | year += odd_cent * 100; | |
3498 | yearday %= DAYS_PER_CENT; | |
3499 | year += (yearday / DAYS_PER_QYEAR) * 4; | |
3500 | yearday %= DAYS_PER_QYEAR; | |
3501 | odd_year = yearday / DAYS_PER_YEAR; | |
3502 | year += odd_year; | |
3503 | yearday %= DAYS_PER_YEAR; | |
3504 | if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */ | |
3505 | month = 1; | |
3506 | yearday = 29; | |
3507 | } | |
3508 | else { | |
3509 | yearday += YEAR_ADJUST; /* recover March 1st crock */ | |
3510 | month = yearday*DAYS_TO_MONTH; | |
3511 | yearday -= month*MONTH_TO_DAYS; | |
3512 | /* recover other leap-year adjustment */ | |
3513 | if (month > 13) { | |
3514 | month-=14; | |
3515 | year++; | |
3516 | } | |
3517 | else { | |
3518 | month-=2; | |
3519 | } | |
3520 | } | |
3521 | ptm->tm_year = year - 1900; | |
3522 | if (yearday) { | |
3523 | ptm->tm_mday = yearday; | |
3524 | ptm->tm_mon = month; | |
3525 | } | |
3526 | else { | |
3527 | ptm->tm_mday = 31; | |
3528 | ptm->tm_mon = month - 1; | |
3529 | } | |
3530 | /* re-build yearday based on Jan 1 to get tm_yday */ | |
3531 | year--; | |
3532 | yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400; | |
3533 | yearday += 14*MONTH_TO_DAYS + 1; | |
3534 | ptm->tm_yday = jday - yearday; | |
3535 | /* fix tm_wday if not overridden by caller */ | |
3536 | if ((unsigned)ptm->tm_wday > 6) | |
3537 | ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7; | |
3538 | } | |
b3c85772 JH |
3539 | |
3540 | char * | |
f1208910 | 3541 | Perl_my_strftime(pTHX_ char *fmt, int sec, int min, int hour, int mday, int mon, int year, int wday, int yday, int isdst) |
b3c85772 JH |
3542 | { |
3543 | #ifdef HAS_STRFTIME | |
3544 | char *buf; | |
3545 | int buflen; | |
3546 | struct tm mytm; | |
3547 | int len; | |
3548 | ||
3549 | init_tm(&mytm); /* XXX workaround - see init_tm() above */ | |
3550 | mytm.tm_sec = sec; | |
3551 | mytm.tm_min = min; | |
3552 | mytm.tm_hour = hour; | |
3553 | mytm.tm_mday = mday; | |
3554 | mytm.tm_mon = mon; | |
3555 | mytm.tm_year = year; | |
3556 | mytm.tm_wday = wday; | |
3557 | mytm.tm_yday = yday; | |
3558 | mytm.tm_isdst = isdst; | |
3559 | mini_mktime(&mytm); | |
c473feec SR |
3560 | /* use libc to get the values for tm_gmtoff and tm_zone [perl #18238] */ |
3561 | #if defined(HAS_MKTIME) && (defined(HAS_TM_TM_GMTOFF) || defined(HAS_TM_TM_ZONE)) | |
3562 | STMT_START { | |
3563 | struct tm mytm2; | |
3564 | mytm2 = mytm; | |
3565 | mktime(&mytm2); | |
3566 | #ifdef HAS_TM_TM_GMTOFF | |
3567 | mytm.tm_gmtoff = mytm2.tm_gmtoff; | |
3568 | #endif | |
3569 | #ifdef HAS_TM_TM_ZONE | |
3570 | mytm.tm_zone = mytm2.tm_zone; | |
3571 | #endif | |
3572 | } STMT_END; | |
3573 | #endif | |
b3c85772 JH |
3574 | buflen = 64; |
3575 | New(0, buf, buflen, char); | |
3576 | len = strftime(buf, buflen, fmt, &mytm); | |
3577 | /* | |
877f6a72 | 3578 | ** The following is needed to handle to the situation where |
b3c85772 JH |
3579 | ** tmpbuf overflows. Basically we want to allocate a buffer |
3580 | ** and try repeatedly. The reason why it is so complicated | |
3581 | ** is that getting a return value of 0 from strftime can indicate | |
3582 | ** one of the following: | |
3583 | ** 1. buffer overflowed, | |
3584 | ** 2. illegal conversion specifier, or | |
3585 | ** 3. the format string specifies nothing to be returned(not | |
3586 | ** an error). This could be because format is an empty string | |
3587 | ** or it specifies %p that yields an empty string in some locale. | |
3588 | ** If there is a better way to make it portable, go ahead by | |
3589 | ** all means. | |
3590 | */ | |
3591 | if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0')) | |
3592 | return buf; | |
3593 | else { | |
3594 | /* Possibly buf overflowed - try again with a bigger buf */ | |
3595 | int fmtlen = strlen(fmt); | |
3596 | int bufsize = fmtlen + buflen; | |
877f6a72 | 3597 | |
b3c85772 JH |
3598 | New(0, buf, bufsize, char); |
3599 | while (buf) { | |
3600 | buflen = strftime(buf, bufsize, fmt, &mytm); | |
3601 | if (buflen > 0 && buflen < bufsize) | |
3602 | break; | |
3603 | /* heuristic to prevent out-of-memory errors */ | |
3604 | if (bufsize > 100*fmtlen) { | |
3605 | Safefree(buf); | |
3606 | buf = NULL; | |
3607 | break; | |
3608 | } | |
3609 | bufsize *= 2; | |
3610 | Renew(buf, bufsize, char); | |
3611 | } | |
3612 | return buf; | |
3613 | } | |
3614 | #else | |
3615 | Perl_croak(aTHX_ "panic: no strftime"); | |
3616 | #endif | |
3617 | } | |
3618 | ||
877f6a72 NIS |
3619 | |
3620 | #define SV_CWD_RETURN_UNDEF \ | |
3621 | sv_setsv(sv, &PL_sv_undef); \ | |
3622 | return FALSE | |
3623 | ||
3624 | #define SV_CWD_ISDOT(dp) \ | |
3625 | (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \ | |
3aed30dc | 3626 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
877f6a72 NIS |
3627 | |
3628 | /* | |
ccfc67b7 JH |
3629 | =head1 Miscellaneous Functions |
3630 | ||
89423764 | 3631 | =for apidoc getcwd_sv |
877f6a72 NIS |
3632 | |
3633 | Fill the sv with current working directory | |
3634 | ||
3635 | =cut | |
3636 | */ | |
3637 | ||
3638 | /* Originally written in Perl by John Bazik; rewritten in C by Ben Sugars. | |
3639 | * rewritten again by dougm, optimized for use with xs TARG, and to prefer | |
3640 | * getcwd(3) if available | |
3641 | * Comments from the orignal: | |
3642 | * This is a faster version of getcwd. It's also more dangerous | |
3643 | * because you might chdir out of a directory that you can't chdir | |
3644 | * back into. */ | |
3645 | ||
877f6a72 | 3646 | int |
89423764 | 3647 | Perl_getcwd_sv(pTHX_ register SV *sv) |
877f6a72 NIS |
3648 | { |
3649 | #ifndef PERL_MICRO | |
3650 | ||
ea715489 JH |
3651 | #ifndef INCOMPLETE_TAINTS |
3652 | SvTAINTED_on(sv); | |
3653 | #endif | |
3654 | ||
8f95b30d JH |
3655 | #ifdef HAS_GETCWD |
3656 | { | |
60e110a8 DM |
3657 | char buf[MAXPATHLEN]; |
3658 | ||
3aed30dc | 3659 | /* Some getcwd()s automatically allocate a buffer of the given |
60e110a8 DM |
3660 | * size from the heap if they are given a NULL buffer pointer. |
3661 | * The problem is that this behaviour is not portable. */ | |
3aed30dc HS |
3662 | if (getcwd(buf, sizeof(buf) - 1)) { |
3663 | STRLEN len = strlen(buf); | |
3664 | sv_setpvn(sv, buf, len); | |
3665 | return TRUE; | |
3666 | } | |
3667 | else { | |
3668 | sv_setsv(sv, &PL_sv_undef); | |
3669 | return FALSE; | |
3670 | } | |
8f95b30d JH |
3671 | } |
3672 | ||
3673 | #else | |
3674 | ||
c623ac67 | 3675 | Stat_t statbuf; |
877f6a72 NIS |
3676 | int orig_cdev, orig_cino, cdev, cino, odev, oino, tdev, tino; |
3677 | int namelen, pathlen=0; | |
3678 | DIR *dir; | |
3679 | Direntry_t *dp; | |
877f6a72 NIS |
3680 | |
3681 | (void)SvUPGRADE(sv, SVt_PV); | |
3682 | ||
877f6a72 | 3683 | if (PerlLIO_lstat(".", &statbuf) < 0) { |
3aed30dc | 3684 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
3685 | } |
3686 | ||
3687 | orig_cdev = statbuf.st_dev; | |
3688 | orig_cino = statbuf.st_ino; | |
3689 | cdev = orig_cdev; | |
3690 | cino = orig_cino; | |
3691 | ||
3692 | for (;;) { | |
3aed30dc HS |
3693 | odev = cdev; |
3694 | oino = cino; | |
3695 | ||
3696 | if (PerlDir_chdir("..") < 0) { | |
3697 | SV_CWD_RETURN_UNDEF; | |
3698 | } | |
3699 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3700 | SV_CWD_RETURN_UNDEF; | |
3701 | } | |
3702 | ||
3703 | cdev = statbuf.st_dev; | |
3704 | cino = statbuf.st_ino; | |
3705 | ||
3706 | if (odev == cdev && oino == cino) { | |
3707 | break; | |
3708 | } | |
3709 | if (!(dir = PerlDir_open("."))) { | |
3710 | SV_CWD_RETURN_UNDEF; | |
3711 | } | |
3712 | ||
3713 | while ((dp = PerlDir_read(dir)) != NULL) { | |
877f6a72 | 3714 | #ifdef DIRNAMLEN |
3aed30dc | 3715 | namelen = dp->d_namlen; |
877f6a72 | 3716 | #else |
3aed30dc | 3717 | namelen = strlen(dp->d_name); |
877f6a72 | 3718 | #endif |
3aed30dc HS |
3719 | /* skip . and .. */ |
3720 | if (SV_CWD_ISDOT(dp)) { | |
3721 | continue; | |
3722 | } | |
3723 | ||
3724 | if (PerlLIO_lstat(dp->d_name, &statbuf) < 0) { | |
3725 | SV_CWD_RETURN_UNDEF; | |
3726 | } | |
3727 | ||
3728 | tdev = statbuf.st_dev; | |
3729 | tino = statbuf.st_ino; | |
3730 | if (tino == oino && tdev == odev) { | |
3731 | break; | |
3732 | } | |
cb5953d6 JH |
3733 | } |
3734 | ||
3aed30dc HS |
3735 | if (!dp) { |
3736 | SV_CWD_RETURN_UNDEF; | |
3737 | } | |
3738 | ||
3739 | if (pathlen + namelen + 1 >= MAXPATHLEN) { | |
3740 | SV_CWD_RETURN_UNDEF; | |
3741 | } | |
877f6a72 | 3742 | |
3aed30dc HS |
3743 | SvGROW(sv, pathlen + namelen + 1); |
3744 | ||
3745 | if (pathlen) { | |
3746 | /* shift down */ | |
3747 | Move(SvPVX(sv), SvPVX(sv) + namelen + 1, pathlen, char); | |
3748 | } | |
877f6a72 | 3749 | |
3aed30dc HS |
3750 | /* prepend current directory to the front */ |
3751 | *SvPVX(sv) = '/'; | |
3752 | Move(dp->d_name, SvPVX(sv)+1, namelen, char); | |
3753 | pathlen += (namelen + 1); | |
877f6a72 NIS |
3754 | |
3755 | #ifdef VOID_CLOSEDIR | |
3aed30dc | 3756 | PerlDir_close(dir); |
877f6a72 | 3757 | #else |
3aed30dc HS |
3758 | if (PerlDir_close(dir) < 0) { |
3759 | SV_CWD_RETURN_UNDEF; | |
3760 | } | |
877f6a72 NIS |
3761 | #endif |
3762 | } | |
3763 | ||
60e110a8 | 3764 | if (pathlen) { |
3aed30dc HS |
3765 | SvCUR_set(sv, pathlen); |
3766 | *SvEND(sv) = '\0'; | |
3767 | SvPOK_only(sv); | |
877f6a72 | 3768 | |
2a45baea | 3769 | if (PerlDir_chdir(SvPVX(sv)) < 0) { |
3aed30dc HS |
3770 | SV_CWD_RETURN_UNDEF; |
3771 | } | |
877f6a72 NIS |
3772 | } |
3773 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3aed30dc | 3774 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
3775 | } |
3776 | ||
3777 | cdev = statbuf.st_dev; | |
3778 | cino = statbuf.st_ino; | |
3779 | ||
3780 | if (cdev != orig_cdev || cino != orig_cino) { | |
3aed30dc HS |
3781 | Perl_croak(aTHX_ "Unstable directory path, " |
3782 | "current directory changed unexpectedly"); | |
877f6a72 | 3783 | } |
877f6a72 NIS |
3784 | |
3785 | return TRUE; | |
793b8d8e JH |
3786 | #endif |
3787 | ||
877f6a72 NIS |
3788 | #else |
3789 | return FALSE; | |
3790 | #endif | |
3791 | } | |
3792 | ||
f4758303 | 3793 | /* |
b0f01acb JP |
3794 | =for apidoc scan_version |
3795 | ||
3796 | Returns a pointer to the next character after the parsed | |
3797 | version string, as well as upgrading the passed in SV to | |
3798 | an RV. | |
3799 | ||
3800 | Function must be called with an already existing SV like | |
3801 | ||
137d6fc0 JP |
3802 | sv = newSV(0); |
3803 | s = scan_version(s,SV *sv, bool qv); | |
b0f01acb JP |
3804 | |
3805 | Performs some preprocessing to the string to ensure that | |
3806 | it has the correct characteristics of a version. Flags the | |
3807 | object if it contains an underscore (which denotes this | |
137d6fc0 JP |
3808 | is a alpha version). The boolean qv denotes that the version |
3809 | should be interpreted as if it had multiple decimals, even if | |
3810 | it doesn't. | |
b0f01acb JP |
3811 | |
3812 | =cut | |
3813 | */ | |
3814 | ||
3815 | char * | |
137d6fc0 | 3816 | Perl_scan_version(pTHX_ char *s, SV *rv, bool qv) |
b0f01acb | 3817 | { |
e568f1a0 | 3818 | const char *start = s; |
ad63d80f JP |
3819 | char *pos = s; |
3820 | I32 saw_period = 0; | |
3821 | bool saw_under = 0; | |
be2ebcad | 3822 | SV* sv = newSVrv(rv, "version"); /* create an SV and upgrade the RV */ |
ad63d80f | 3823 | (void)sv_upgrade(sv, SVt_PVAV); /* needs to be an AV type */ |
f9be5ac8 | 3824 | AvREAL_on((AV*)sv); |
ad63d80f JP |
3825 | |
3826 | /* pre-scan the imput string to check for decimals */ | |
3827 | while ( *pos == '.' || *pos == '_' || isDIGIT(*pos) ) | |
3828 | { | |
3829 | if ( *pos == '.' ) | |
3830 | { | |
3831 | if ( saw_under ) | |
5f89c282 | 3832 | Perl_croak(aTHX_ "Invalid version format (underscores before decimal)"); |
ad63d80f | 3833 | saw_period++ ; |
46314c13 | 3834 | } |
ad63d80f JP |
3835 | else if ( *pos == '_' ) |
3836 | { | |
3837 | if ( saw_under ) | |
5f89c282 | 3838 | Perl_croak(aTHX_ "Invalid version format (multiple underscores)"); |
ad63d80f JP |
3839 | saw_under = 1; |
3840 | } | |
3841 | pos++; | |
3842 | } | |
3843 | pos = s; | |
3844 | ||
137d6fc0 JP |
3845 | if (*pos == 'v') { |
3846 | pos++; /* get past 'v' */ | |
3847 | qv = 1; /* force quoted version processing */ | |
3848 | } | |
ad63d80f | 3849 | while (isDIGIT(*pos)) |
46314c13 | 3850 | pos++; |
ad63d80f JP |
3851 | if (!isALPHA(*pos)) { |
3852 | I32 rev; | |
3853 | ||
3854 | if (*s == 'v') s++; /* get past 'v' */ | |
3855 | ||
3856 | for (;;) { | |
3857 | rev = 0; | |
3858 | { | |
129318bd JP |
3859 | /* this is atoi() that delimits on underscores */ |
3860 | char *end = pos; | |
3861 | I32 mult = 1; | |
3862 | I32 orev; | |
3863 | if ( s < pos && s > start && *(s-1) == '_' ) { | |
137d6fc0 | 3864 | mult *= -1; /* alpha version */ |
129318bd JP |
3865 | } |
3866 | /* the following if() will only be true after the decimal | |
3867 | * point of a version originally created with a bare | |
3868 | * floating point number, i.e. not quoted in any way | |
3869 | */ | |
13f8f398 | 3870 | if ( !qv && s > start+1 && saw_period == 1 ) { |
c76df65e | 3871 | mult *= 100; |
129318bd JP |
3872 | while ( s < end ) { |
3873 | orev = rev; | |
3874 | rev += (*s - '0') * mult; | |
3875 | mult /= 10; | |
32fdb065 | 3876 | if ( PERL_ABS(orev) > PERL_ABS(rev) ) |
129318bd JP |
3877 | Perl_croak(aTHX_ "Integer overflow in version"); |
3878 | s++; | |
3879 | } | |
3880 | } | |
3881 | else { | |
3882 | while (--end >= s) { | |
3883 | orev = rev; | |
3884 | rev += (*end - '0') * mult; | |
3885 | mult *= 10; | |
32fdb065 | 3886 | if ( PERL_ABS(orev) > PERL_ABS(rev) ) |
129318bd JP |
3887 | Perl_croak(aTHX_ "Integer overflow in version"); |
3888 | } | |
3889 | } | |
3890 | } | |
3891 | ||
3892 | /* Append revision */ | |
ad63d80f JP |
3893 | av_push((AV *)sv, newSViv(rev)); |
3894 | if ( (*pos == '.' || *pos == '_') && isDIGIT(pos[1])) | |
3895 | s = ++pos; | |
3896 | else if ( isDIGIT(*pos) ) | |
3897 | s = pos; | |
b0f01acb | 3898 | else { |
ad63d80f JP |
3899 | s = pos; |
3900 | break; | |
3901 | } | |
3902 | while ( isDIGIT(*pos) ) { | |
13f8f398 | 3903 | if ( saw_period == 1 && pos-s == 3 ) |
ad63d80f JP |
3904 | break; |
3905 | pos++; | |
b0f01acb JP |
3906 | } |
3907 | } | |
3908 | } | |
b9381830 JP |
3909 | if ( qv ) { /* quoted versions always become full version objects */ |
3910 | I32 len = av_len((AV *)sv); | |
4edfc503 NC |
3911 | /* This for loop appears to trigger a compiler bug on OS X, as it |
3912 | loops infinitely. Yes, len is negative. No, it makes no sense. | |
3913 | Compiler in question is: | |
3914 | gcc version 3.3 20030304 (Apple Computer, Inc. build 1640) | |
3915 | for ( len = 2 - len; len > 0; len-- ) | |
3916 | av_push((AV *)sv, newSViv(0)); | |
3917 | */ | |
3918 | len = 2 - len; | |
3919 | while (len-- > 0) | |
c76df65e | 3920 | av_push((AV *)sv, newSViv(0)); |
b9381830 | 3921 | } |
ad63d80f | 3922 | return s; |
b0f01acb JP |
3923 | } |
3924 | ||
3925 | /* | |
3926 | =for apidoc new_version | |
3927 | ||
3928 | Returns a new version object based on the passed in SV: | |
3929 | ||
3930 | SV *sv = new_version(SV *ver); | |
3931 | ||
3932 | Does not alter the passed in ver SV. See "upg_version" if you | |
3933 | want to upgrade the SV. | |
3934 | ||
3935 | =cut | |
3936 | */ | |
3937 | ||
3938 | SV * | |
3939 | Perl_new_version(pTHX_ SV *ver) | |
3940 | { | |
129318bd | 3941 | SV *rv = newSV(0); |
d7aa5382 JP |
3942 | if ( sv_derived_from(ver,"version") ) /* can just copy directly */ |
3943 | { | |
3944 | I32 key; | |
3945 | AV *av = (AV *)SvRV(ver); | |
3946 | SV* sv = newSVrv(rv, "version"); /* create an SV and upgrade the RV */ | |
3947 | (void)sv_upgrade(sv, SVt_PVAV); /* needs to be an AV type */ | |
f9be5ac8 | 3948 | AvREAL_on((AV*)sv); |
d7aa5382 JP |
3949 | for ( key = 0; key <= av_len(av); key++ ) |
3950 | { | |
3951 | I32 rev = SvIV(*av_fetch(av, key, FALSE)); | |
3952 | av_push((AV *)sv, newSViv(rev)); | |
3953 | } | |
3954 | return rv; | |
3955 | } | |
ad63d80f | 3956 | #ifdef SvVOK |
137d6fc0 JP |
3957 | if ( SvVOK(ver) ) { /* already a v-string */ |
3958 | char *version; | |
b0f01acb JP |
3959 | MAGIC* mg = mg_find(ver,PERL_MAGIC_vstring); |
3960 | version = savepvn( (const char*)mg->mg_ptr,mg->mg_len ); | |
137d6fc0 JP |
3961 | sv_setpv(rv,version); |
3962 | Safefree(version); | |
b0f01acb | 3963 | } |
137d6fc0 | 3964 | else { |
ad63d80f | 3965 | #endif |
137d6fc0 JP |
3966 | sv_setsv(rv,ver); /* make a duplicate */ |
3967 | #ifdef SvVOK | |
26ec6fc3 | 3968 | } |
137d6fc0 JP |
3969 | #endif |
3970 | upg_version(rv); | |
b0f01acb JP |
3971 | return rv; |
3972 | } | |
3973 | ||
3974 | /* | |
3975 | =for apidoc upg_version | |
3976 | ||
3977 | In-place upgrade of the supplied SV to a version object. | |
3978 | ||
3979 | SV *sv = upg_version(SV *sv); | |
3980 | ||
3981 | Returns a pointer to the upgraded SV. | |
3982 | ||
3983 | =cut | |
3984 | */ | |
3985 | ||
3986 | SV * | |
ad63d80f | 3987 | Perl_upg_version(pTHX_ SV *ver) |
b0f01acb | 3988 | { |
137d6fc0 JP |
3989 | char *version; |
3990 | bool qv = 0; | |
3991 | ||
3992 | if ( SvNOK(ver) ) /* may get too much accuracy */ | |
3993 | { | |
3994 | char tbuf[64]; | |
3995 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); | |
3996 | version = savepv(tbuf); | |
3997 | } | |
ad63d80f | 3998 | #ifdef SvVOK |
137d6fc0 | 3999 | else if ( SvVOK(ver) ) { /* already a v-string */ |
ad63d80f JP |
4000 | MAGIC* mg = mg_find(ver,PERL_MAGIC_vstring); |
4001 | version = savepvn( (const char*)mg->mg_ptr,mg->mg_len ); | |
137d6fc0 | 4002 | qv = 1; |
b0f01acb | 4003 | } |
ad63d80f | 4004 | #endif |
137d6fc0 JP |
4005 | else /* must be a string or something like a string */ |
4006 | { | |
2e0de35c | 4007 | version = savesvpv(ver); |
137d6fc0 JP |
4008 | } |
4009 | (void)scan_version(version, ver, qv); | |
4010 | Safefree(version); | |
ad63d80f | 4011 | return ver; |
b0f01acb JP |
4012 | } |
4013 | ||
4014 | ||
4015 | /* | |
4016 | =for apidoc vnumify | |
4017 | ||
ad63d80f JP |
4018 | Accepts a version object and returns the normalized floating |
4019 | point representation. Call like: | |
b0f01acb | 4020 | |
ad63d80f | 4021 | sv = vnumify(rv); |
b0f01acb | 4022 | |
ad63d80f JP |
4023 | NOTE: you can pass either the object directly or the SV |
4024 | contained within the RV. | |
b0f01acb JP |
4025 | |
4026 | =cut | |
4027 | */ | |
4028 | ||
4029 | SV * | |
ad63d80f | 4030 | Perl_vnumify(pTHX_ SV *vs) |
b0f01acb | 4031 | { |
ad63d80f | 4032 | I32 i, len, digit; |
137d6fc0 | 4033 | SV *sv = newSV(0); |
ad63d80f JP |
4034 | if ( SvROK(vs) ) |
4035 | vs = SvRV(vs); | |
4036 | len = av_len((AV *)vs); | |
46314c13 JP |
4037 | if ( len == -1 ) |
4038 | { | |
4039 | Perl_sv_catpv(aTHX_ sv,"0"); | |
4040 | return sv; | |
4041 | } | |
ad63d80f | 4042 | digit = SvIVX(*av_fetch((AV *)vs, 0, 0)); |
c0fd1b42 | 4043 | Perl_sv_setpvf(aTHX_ sv,"%d.", (int)PERL_ABS(digit)); |
13f8f398 | 4044 | for ( i = 1 ; i < len ; i++ ) |
b0f01acb | 4045 | { |
ad63d80f | 4046 | digit = SvIVX(*av_fetch((AV *)vs, i, 0)); |
c0fd1b42 | 4047 | Perl_sv_catpvf(aTHX_ sv,"%03d", (int)PERL_ABS(digit)); |
b0f01acb | 4048 | } |
13f8f398 JP |
4049 | |
4050 | if ( len > 0 ) | |
4051 | { | |
4052 | digit = SvIVX(*av_fetch((AV *)vs, len, 0)); | |
13f8f398 JP |
4053 | if ( (int)PERL_ABS(digit) != 0 || len == 1 ) |
4054 | { | |
c76df65e RGS |
4055 | if ( digit < 0 ) /* alpha version */ |
4056 | Perl_sv_catpv(aTHX_ sv,"_"); | |
4057 | /* Don't display additional trailing zeros */ | |
13f8f398 JP |
4058 | Perl_sv_catpvf(aTHX_ sv,"%03d", (int)PERL_ABS(digit)); |
4059 | } | |
4060 | } | |
4061 | else /* len == 0 */ | |
4062 | { | |
ad63d80f | 4063 | Perl_sv_catpv(aTHX_ sv,"000"); |
13f8f398 | 4064 | } |
b0f01acb JP |
4065 | return sv; |
4066 | } | |
4067 | ||
4068 | /* | |
b9381830 | 4069 | =for apidoc vnormal |
b0f01acb | 4070 | |
ad63d80f JP |
4071 | Accepts a version object and returns the normalized string |
4072 | representation. Call like: | |
b0f01acb | 4073 | |
b9381830 | 4074 | sv = vnormal(rv); |
b0f01acb | 4075 | |
ad63d80f JP |
4076 | NOTE: you can pass either the object directly or the SV |
4077 | contained within the RV. | |
b0f01acb JP |
4078 | |
4079 | =cut | |
4080 | */ | |
4081 | ||
4082 | SV * | |
b9381830 | 4083 | Perl_vnormal(pTHX_ SV *vs) |
b0f01acb | 4084 | { |
ad63d80f | 4085 | I32 i, len, digit; |
137d6fc0 | 4086 | SV *sv = newSV(0); |
ad63d80f JP |
4087 | if ( SvROK(vs) ) |
4088 | vs = SvRV(vs); | |
4089 | len = av_len((AV *)vs); | |
46314c13 JP |
4090 | if ( len == -1 ) |
4091 | { | |
4092 | Perl_sv_catpv(aTHX_ sv,""); | |
4093 | return sv; | |
4094 | } | |
ad63d80f | 4095 | digit = SvIVX(*av_fetch((AV *)vs, 0, 0)); |
e3feee4e | 4096 | Perl_sv_setpvf(aTHX_ sv,"%"IVdf,(IV)digit); |
ad63d80f | 4097 | for ( i = 1 ; i <= len ; i++ ) |
46314c13 | 4098 | { |
ad63d80f JP |
4099 | digit = SvIVX(*av_fetch((AV *)vs, i, 0)); |
4100 | if ( digit < 0 ) | |
e3feee4e | 4101 | Perl_sv_catpvf(aTHX_ sv,"_%"IVdf,(IV)-digit); |
ad63d80f | 4102 | else |
e3feee4e | 4103 | Perl_sv_catpvf(aTHX_ sv,".%"IVdf,(IV)digit); |
b0f01acb | 4104 | } |
137d6fc0 JP |
4105 | |
4106 | if ( len <= 2 ) { /* short version, must be at least three */ | |
4107 | for ( len = 2 - len; len != 0; len-- ) | |
4108 | Perl_sv_catpv(aTHX_ sv,".0"); | |
4109 | } | |
4110 | ||
b0f01acb | 4111 | return sv; |
129318bd | 4112 | } |
b0f01acb | 4113 | |
ad63d80f | 4114 | /* |
b9381830 JP |
4115 | =for apidoc vstringify |
4116 | ||
4117 | In order to maintain maximum compatibility with earlier versions | |
4118 | of Perl, this function will return either the floating point | |
4119 | notation or the multiple dotted notation, depending on whether | |
4120 | the original version contained 1 or more dots, respectively | |
4121 | ||
4122 | =cut | |
4123 | */ | |
4124 | ||
4125 | SV * | |
4126 | Perl_vstringify(pTHX_ SV *vs) | |
4127 | { | |
c76df65e | 4128 | I32 len, digit; |
b9381830 JP |
4129 | if ( SvROK(vs) ) |
4130 | vs = SvRV(vs); | |
4131 | len = av_len((AV *)vs); | |
c76df65e | 4132 | digit = SvIVX(*av_fetch((AV *)vs, len, 0)); |
b9381830 | 4133 | |
c76df65e | 4134 | if ( len < 2 || ( len == 2 && digit < 0 ) ) |
b9381830 JP |
4135 | return vnumify(vs); |
4136 | else | |
4137 | return vnormal(vs); | |
4138 | } | |
4139 | ||
4140 | /* | |
ad63d80f JP |
4141 | =for apidoc vcmp |
4142 | ||
4143 | Version object aware cmp. Both operands must already have been | |
4144 | converted into version objects. | |
4145 | ||
4146 | =cut | |
4147 | */ | |
4148 | ||
4149 | int | |
4150 | Perl_vcmp(pTHX_ SV *lsv, SV *rsv) | |
4151 | { | |
4152 | I32 i,l,m,r,retval; | |
4153 | if ( SvROK(lsv) ) | |
4154 | lsv = SvRV(lsv); | |
4155 | if ( SvROK(rsv) ) | |
4156 | rsv = SvRV(rsv); | |
4157 | l = av_len((AV *)lsv); | |
4158 | r = av_len((AV *)rsv); | |
4159 | m = l < r ? l : r; | |
4160 | retval = 0; | |
4161 | i = 0; | |
4162 | while ( i <= m && retval == 0 ) | |
4163 | { | |
4164 | I32 left = SvIV(*av_fetch((AV *)lsv,i,0)); | |
4165 | I32 right = SvIV(*av_fetch((AV *)rsv,i,0)); | |
137d6fc0 JP |
4166 | bool lalpha = left < 0 ? 1 : 0; |
4167 | bool ralpha = right < 0 ? 1 : 0; | |
4168 | left = abs(left); | |
4169 | right = abs(right); | |
4170 | if ( left < right || (left == right && lalpha && !ralpha) ) | |
ad63d80f | 4171 | retval = -1; |
137d6fc0 | 4172 | if ( left > right || (left == right && ralpha && !lalpha) ) |
ad63d80f JP |
4173 | retval = +1; |
4174 | i++; | |
4175 | } | |
4176 | ||
137d6fc0 | 4177 | if ( l != r && retval == 0 ) /* possible match except for trailing 0's */ |
129318bd | 4178 | { |
137d6fc0 | 4179 | if ( l < r ) |
129318bd | 4180 | { |
137d6fc0 JP |
4181 | while ( i <= r && retval == 0 ) |
4182 | { | |
4183 | if ( SvIV(*av_fetch((AV *)rsv,i,0)) != 0 ) | |
4184 | retval = -1; /* not a match after all */ | |
4185 | i++; | |
4186 | } | |
4187 | } | |
4188 | else | |
4189 | { | |
4190 | while ( i <= l && retval == 0 ) | |
4191 | { | |
4192 | if ( SvIV(*av_fetch((AV *)lsv,i,0)) != 0 ) | |
4193 | retval = +1; /* not a match after all */ | |
4194 | i++; | |
4195 | } | |
129318bd JP |
4196 | } |
4197 | } | |
ad63d80f JP |
4198 | return retval; |
4199 | } | |
4200 | ||
c95c94b1 | 4201 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) && defined(SOCK_DGRAM) && defined(HAS_SELECT) |
2bc69dc4 NIS |
4202 | # define EMULATE_SOCKETPAIR_UDP |
4203 | #endif | |
4204 | ||
4205 | #ifdef EMULATE_SOCKETPAIR_UDP | |
02fc2eee NC |
4206 | static int |
4207 | S_socketpair_udp (int fd[2]) { | |
e10bb1e9 | 4208 | dTHX; |
02fc2eee NC |
4209 | /* Fake a datagram socketpair using UDP to localhost. */ |
4210 | int sockets[2] = {-1, -1}; | |
4211 | struct sockaddr_in addresses[2]; | |
4212 | int i; | |
3aed30dc | 4213 | Sock_size_t size = sizeof(struct sockaddr_in); |
ae92b34e | 4214 | unsigned short port; |
02fc2eee NC |
4215 | int got; |
4216 | ||
3aed30dc | 4217 | memset(&addresses, 0, sizeof(addresses)); |
02fc2eee NC |
4218 | i = 1; |
4219 | do { | |
3aed30dc HS |
4220 | sockets[i] = PerlSock_socket(AF_INET, SOCK_DGRAM, PF_INET); |
4221 | if (sockets[i] == -1) | |
4222 | goto tidy_up_and_fail; | |
4223 | ||
4224 | addresses[i].sin_family = AF_INET; | |
4225 | addresses[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
4226 | addresses[i].sin_port = 0; /* kernel choses port. */ | |
4227 | if (PerlSock_bind(sockets[i], (struct sockaddr *) &addresses[i], | |
4228 | sizeof(struct sockaddr_in)) == -1) | |
4229 | goto tidy_up_and_fail; | |
02fc2eee NC |
4230 | } while (i--); |
4231 | ||
4232 | /* Now have 2 UDP sockets. Find out which port each is connected to, and | |
4233 | for each connect the other socket to it. */ | |
4234 | i = 1; | |
4235 | do { | |
3aed30dc HS |
4236 | if (PerlSock_getsockname(sockets[i], (struct sockaddr *) &addresses[i], |
4237 | &size) == -1) | |
4238 | goto tidy_up_and_fail; | |
4239 | if (size != sizeof(struct sockaddr_in)) | |
4240 | goto abort_tidy_up_and_fail; | |
4241 | /* !1 is 0, !0 is 1 */ | |
4242 | if (PerlSock_connect(sockets[!i], (struct sockaddr *) &addresses[i], | |
4243 | sizeof(struct sockaddr_in)) == -1) | |
4244 | goto tidy_up_and_fail; | |
02fc2eee NC |
4245 | } while (i--); |
4246 | ||
4247 | /* Now we have 2 sockets connected to each other. I don't trust some other | |
4248 | process not to have already sent a packet to us (by random) so send | |
4249 | a packet from each to the other. */ | |
4250 | i = 1; | |
4251 | do { | |
3aed30dc HS |
4252 | /* I'm going to send my own port number. As a short. |
4253 | (Who knows if someone somewhere has sin_port as a bitfield and needs | |
4254 | this routine. (I'm assuming crays have socketpair)) */ | |
4255 | port = addresses[i].sin_port; | |
4256 | got = PerlLIO_write(sockets[i], &port, sizeof(port)); | |
4257 | if (got != sizeof(port)) { | |
4258 | if (got == -1) | |
4259 | goto tidy_up_and_fail; | |
4260 | goto abort_tidy_up_and_fail; | |
4261 | } | |
02fc2eee NC |
4262 | } while (i--); |
4263 | ||
4264 | /* Packets sent. I don't trust them to have arrived though. | |
4265 | (As I understand it Solaris TCP stack is multithreaded. Non-blocking | |
4266 | connect to localhost will use a second kernel thread. In 2.6 the | |
4267 | first thread running the connect() returns before the second completes, | |
4268 | so EINPROGRESS> In 2.7 the improved stack is faster and connect() | |
4269 | returns 0. Poor programs have tripped up. One poor program's authors' | |
4270 | had a 50-1 reverse stock split. Not sure how connected these were.) | |
4271 | So I don't trust someone not to have an unpredictable UDP stack. | |
4272 | */ | |
4273 | ||
4274 | { | |
3aed30dc HS |
4275 | struct timeval waitfor = {0, 100000}; /* You have 0.1 seconds */ |
4276 | int max = sockets[1] > sockets[0] ? sockets[1] : sockets[0]; | |
4277 | fd_set rset; | |
4278 | ||
4279 | FD_ZERO(&rset); | |
4280 | FD_SET(sockets[0], &rset); | |
4281 | FD_SET(sockets[1], &rset); | |
4282 | ||
4283 | got = PerlSock_select(max + 1, &rset, NULL, NULL, &waitfor); | |
4284 | if (got != 2 || !FD_ISSET(sockets[0], &rset) | |
4285 | || !FD_ISSET(sockets[1], &rset)) { | |
4286 | /* I hope this is portable and appropriate. */ | |
4287 | if (got == -1) | |
4288 | goto tidy_up_and_fail; | |
4289 | goto abort_tidy_up_and_fail; | |
4290 | } | |
02fc2eee | 4291 | } |
f4758303 | 4292 | |
02fc2eee NC |
4293 | /* And the paranoia department even now doesn't trust it to have arrive |
4294 | (hence MSG_DONTWAIT). Or that what arrives was sent by us. */ | |
4295 | { | |
3aed30dc HS |
4296 | struct sockaddr_in readfrom; |
4297 | unsigned short buffer[2]; | |
02fc2eee | 4298 | |
3aed30dc HS |
4299 | i = 1; |
4300 | do { | |
02fc2eee | 4301 | #ifdef MSG_DONTWAIT |
3aed30dc HS |
4302 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
4303 | sizeof(buffer), MSG_DONTWAIT, | |
4304 | (struct sockaddr *) &readfrom, &size); | |
02fc2eee | 4305 | #else |
3aed30dc HS |
4306 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
4307 | sizeof(buffer), 0, | |
4308 | (struct sockaddr *) &readfrom, &size); | |
e10bb1e9 | 4309 | #endif |
02fc2eee | 4310 | |
3aed30dc HS |
4311 | if (got == -1) |
4312 | goto tidy_up_and_fail; | |
4313 | if (got != sizeof(port) | |
4314 | || size != sizeof(struct sockaddr_in) | |
4315 | /* Check other socket sent us its port. */ | |
4316 | || buffer[0] != (unsigned short) addresses[!i].sin_port | |
4317 | /* Check kernel says we got the datagram from that socket */ | |
4318 | || readfrom.sin_family != addresses[!i].sin_family | |
4319 | || readfrom.sin_addr.s_addr != addresses[!i].sin_addr.s_addr | |
4320 | || readfrom.sin_port != addresses[!i].sin_port) | |
4321 | goto abort_tidy_up_and_fail; | |
4322 | } while (i--); | |
02fc2eee NC |
4323 | } |
4324 | /* My caller (my_socketpair) has validated that this is non-NULL */ | |
4325 | fd[0] = sockets[0]; | |
4326 | fd[1] = sockets[1]; | |
4327 | /* I hereby declare this connection open. May God bless all who cross | |
4328 | her. */ | |
4329 | return 0; | |
4330 | ||
4331 | abort_tidy_up_and_fail: | |
4332 | errno = ECONNABORTED; | |
4333 | tidy_up_and_fail: | |
4334 | { | |
3aed30dc HS |
4335 | int save_errno = errno; |
4336 | if (sockets[0] != -1) | |
4337 | PerlLIO_close(sockets[0]); | |
4338 | if (sockets[1] != -1) | |
4339 | PerlLIO_close(sockets[1]); | |
4340 | errno = save_errno; | |
4341 | return -1; | |
02fc2eee NC |
4342 | } |
4343 | } | |
85ca448a | 4344 | #endif /* EMULATE_SOCKETPAIR_UDP */ |
02fc2eee | 4345 | |
b5ac89c3 | 4346 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) |
02fc2eee NC |
4347 | int |
4348 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { | |
4349 | /* Stevens says that family must be AF_LOCAL, protocol 0. | |
2948e0bd | 4350 | I'm going to enforce that, then ignore it, and use TCP (or UDP). */ |
e10bb1e9 | 4351 | dTHX; |
02fc2eee NC |
4352 | int listener = -1; |
4353 | int connector = -1; | |
4354 | int acceptor = -1; | |
4355 | struct sockaddr_in listen_addr; | |
4356 | struct sockaddr_in connect_addr; | |
4357 | Sock_size_t size; | |
4358 | ||
50458334 JH |
4359 | if (protocol |
4360 | #ifdef AF_UNIX | |
4361 | || family != AF_UNIX | |
4362 | #endif | |
3aed30dc HS |
4363 | ) { |
4364 | errno = EAFNOSUPPORT; | |
4365 | return -1; | |
02fc2eee | 4366 | } |
2948e0bd | 4367 | if (!fd) { |
3aed30dc HS |
4368 | errno = EINVAL; |
4369 | return -1; | |
2948e0bd | 4370 | } |
02fc2eee | 4371 | |
2bc69dc4 | 4372 | #ifdef EMULATE_SOCKETPAIR_UDP |
02fc2eee | 4373 | if (type == SOCK_DGRAM) |
3aed30dc | 4374 | return S_socketpair_udp(fd); |
2bc69dc4 | 4375 | #endif |
02fc2eee | 4376 | |
3aed30dc | 4377 | listener = PerlSock_socket(AF_INET, type, 0); |
02fc2eee | 4378 | if (listener == -1) |
3aed30dc HS |
4379 | return -1; |
4380 | memset(&listen_addr, 0, sizeof(listen_addr)); | |
02fc2eee | 4381 | listen_addr.sin_family = AF_INET; |
3aed30dc | 4382 | listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); |
02fc2eee | 4383 | listen_addr.sin_port = 0; /* kernel choses port. */ |
3aed30dc HS |
4384 | if (PerlSock_bind(listener, (struct sockaddr *) &listen_addr, |
4385 | sizeof(listen_addr)) == -1) | |
4386 | goto tidy_up_and_fail; | |
e10bb1e9 | 4387 | if (PerlSock_listen(listener, 1) == -1) |
3aed30dc | 4388 | goto tidy_up_and_fail; |
02fc2eee | 4389 | |
3aed30dc | 4390 | connector = PerlSock_socket(AF_INET, type, 0); |
02fc2eee | 4391 | if (connector == -1) |
3aed30dc | 4392 | goto tidy_up_and_fail; |
02fc2eee | 4393 | /* We want to find out the port number to connect to. */ |
3aed30dc HS |
4394 | size = sizeof(connect_addr); |
4395 | if (PerlSock_getsockname(listener, (struct sockaddr *) &connect_addr, | |
4396 | &size) == -1) | |
4397 | goto tidy_up_and_fail; | |
4398 | if (size != sizeof(connect_addr)) | |
4399 | goto abort_tidy_up_and_fail; | |
e10bb1e9 | 4400 | if (PerlSock_connect(connector, (struct sockaddr *) &connect_addr, |
3aed30dc HS |
4401 | sizeof(connect_addr)) == -1) |
4402 | goto tidy_up_and_fail; | |
02fc2eee | 4403 | |
3aed30dc HS |
4404 | size = sizeof(listen_addr); |
4405 | acceptor = PerlSock_accept(listener, (struct sockaddr *) &listen_addr, | |
4406 | &size); | |
02fc2eee | 4407 | if (acceptor == -1) |
3aed30dc HS |
4408 | goto tidy_up_and_fail; |
4409 | if (size != sizeof(listen_addr)) | |
4410 | goto abort_tidy_up_and_fail; | |
4411 | PerlLIO_close(listener); | |
02fc2eee NC |
4412 | /* Now check we are talking to ourself by matching port and host on the |
4413 | two sockets. */ | |
3aed30dc HS |
4414 | if (PerlSock_getsockname(connector, (struct sockaddr *) &connect_addr, |
4415 | &size) == -1) | |
4416 | goto tidy_up_and_fail; | |
4417 | if (size != sizeof(connect_addr) | |
4418 | || listen_addr.sin_family != connect_addr.sin_family | |
4419 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr | |
4420 | || listen_addr.sin_port != connect_addr.sin_port) { | |
4421 | goto abort_tidy_up_and_fail; | |
02fc2eee NC |
4422 | } |
4423 | fd[0] = connector; | |
4424 | fd[1] = acceptor; | |
4425 | return 0; | |
4426 | ||
4427 | abort_tidy_up_and_fail: | |
85ca448a | 4428 | errno = ECONNABORTED; /* I hope this is portable and appropriate. */ |
02fc2eee NC |
4429 | tidy_up_and_fail: |
4430 | { | |
3aed30dc HS |
4431 | int save_errno = errno; |
4432 | if (listener != -1) | |
4433 | PerlLIO_close(listener); | |
4434 | if (connector != -1) | |
4435 | PerlLIO_close(connector); | |
4436 | if (acceptor != -1) | |
4437 | PerlLIO_close(acceptor); | |
4438 | errno = save_errno; | |
4439 | return -1; | |
02fc2eee NC |
4440 | } |
4441 | } | |
85ca448a | 4442 | #else |
48ea76d1 JH |
4443 | /* In any case have a stub so that there's code corresponding |
4444 | * to the my_socketpair in global.sym. */ | |
4445 | int | |
4446 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { | |
daf16542 | 4447 | #ifdef HAS_SOCKETPAIR |
48ea76d1 | 4448 | return socketpair(family, type, protocol, fd); |
daf16542 JH |
4449 | #else |
4450 | return -1; | |
4451 | #endif | |
48ea76d1 JH |
4452 | } |
4453 | #endif | |
4454 | ||
68795e93 NIS |
4455 | /* |
4456 | ||
4457 | =for apidoc sv_nosharing | |
4458 | ||
4459 | Dummy routine which "shares" an SV when there is no sharing module present. | |
4460 | Exists to avoid test for a NULL function pointer and because it could potentially warn under | |
4461 | some level of strict-ness. | |
4462 | ||
4463 | =cut | |
4464 | */ | |
4465 | ||
4466 | void | |
4467 | Perl_sv_nosharing(pTHX_ SV *sv) | |
4468 | { | |
4469 | } | |
4470 | ||
4471 | /* | |
4472 | =for apidoc sv_nolocking | |
4473 | ||
4474 | Dummy routine which "locks" an SV when there is no locking module present. | |
4475 | Exists to avoid test for a NULL function pointer and because it could potentially warn under | |
4476 | some level of strict-ness. | |
4477 | ||
4478 | =cut | |
4479 | */ | |
4480 | ||
4481 | void | |
4482 | Perl_sv_nolocking(pTHX_ SV *sv) | |
4483 | { | |
4484 | } | |
4485 | ||
4486 | ||
4487 | /* | |
4488 | =for apidoc sv_nounlocking | |
4489 | ||
4490 | Dummy routine which "unlocks" an SV when there is no locking module present. | |
4491 | Exists to avoid test for a NULL function pointer and because it could potentially warn under | |
4492 | some level of strict-ness. | |
4493 | ||
4494 | =cut | |
4495 | */ | |
4496 | ||
4497 | void | |
4498 | Perl_sv_nounlocking(pTHX_ SV *sv) | |
4499 | { | |
4500 | } | |
4501 | ||
a05d7ebb JH |
4502 | U32 |
4503 | Perl_parse_unicode_opts(pTHX_ char **popt) | |
4504 | { | |
4505 | char *p = *popt; | |
4506 | U32 opt = 0; | |
4507 | ||
4508 | if (*p) { | |
4509 | if (isDIGIT(*p)) { | |
4510 | opt = (U32) atoi(p); | |
4511 | while (isDIGIT(*p)) p++; | |
7c91f477 | 4512 | if (*p && *p != '\n' && *p != '\r') |
a05d7ebb JH |
4513 | Perl_croak(aTHX_ "Unknown Unicode option letter '%c'", *p); |
4514 | } | |
4515 | else { | |
4516 | for (; *p; p++) { | |
4517 | switch (*p) { | |
4518 | case PERL_UNICODE_STDIN: | |
4519 | opt |= PERL_UNICODE_STDIN_FLAG; break; | |
4520 | case PERL_UNICODE_STDOUT: | |
4521 | opt |= PERL_UNICODE_STDOUT_FLAG; break; | |
4522 | case PERL_UNICODE_STDERR: | |
4523 | opt |= PERL_UNICODE_STDERR_FLAG; break; | |
4524 | case PERL_UNICODE_STD: | |
4525 | opt |= PERL_UNICODE_STD_FLAG; break; | |
4526 | case PERL_UNICODE_IN: | |
4527 | opt |= PERL_UNICODE_IN_FLAG; break; | |
4528 | case PERL_UNICODE_OUT: | |
4529 | opt |= PERL_UNICODE_OUT_FLAG; break; | |
4530 | case PERL_UNICODE_INOUT: | |
4531 | opt |= PERL_UNICODE_INOUT_FLAG; break; | |
4532 | case PERL_UNICODE_LOCALE: | |
4533 | opt |= PERL_UNICODE_LOCALE_FLAG; break; | |
4534 | case PERL_UNICODE_ARGV: | |
4535 | opt |= PERL_UNICODE_ARGV_FLAG; break; | |
4536 | default: | |
7c91f477 JH |
4537 | if (*p != '\n' && *p != '\r') |
4538 | Perl_croak(aTHX_ | |
4539 | "Unknown Unicode option letter '%c'", *p); | |
a05d7ebb JH |
4540 | } |
4541 | } | |
4542 | } | |
4543 | } | |
4544 | else | |
4545 | opt = PERL_UNICODE_DEFAULT_FLAGS; | |
4546 | ||
4547 | if (opt & ~PERL_UNICODE_ALL_FLAGS) | |
06e66572 | 4548 | Perl_croak(aTHX_ "Unknown Unicode option value %"UVuf, |
a05d7ebb JH |
4549 | (UV) (opt & ~PERL_UNICODE_ALL_FLAGS)); |
4550 | ||
4551 | *popt = p; | |
4552 | ||
4553 | return opt; | |
4554 | } | |
4555 | ||
132efe8b JH |
4556 | U32 |
4557 | Perl_seed(pTHX) | |
4558 | { | |
4559 | /* | |
4560 | * This is really just a quick hack which grabs various garbage | |
4561 | * values. It really should be a real hash algorithm which | |
4562 | * spreads the effect of every input bit onto every output bit, | |
4563 | * if someone who knows about such things would bother to write it. | |
4564 | * Might be a good idea to add that function to CORE as well. | |
4565 | * No numbers below come from careful analysis or anything here, | |
4566 | * except they are primes and SEED_C1 > 1E6 to get a full-width | |
4567 | * value from (tv_sec * SEED_C1 + tv_usec). The multipliers should | |
4568 | * probably be bigger too. | |
4569 | */ | |
4570 | #if RANDBITS > 16 | |
4571 | # define SEED_C1 1000003 | |
4572 | #define SEED_C4 73819 | |
4573 | #else | |
4574 | # define SEED_C1 25747 | |
4575 | #define SEED_C4 20639 | |
4576 | #endif | |
4577 | #define SEED_C2 3 | |
4578 | #define SEED_C3 269 | |
4579 | #define SEED_C5 26107 | |
4580 | ||
4581 | #ifndef PERL_NO_DEV_RANDOM | |
4582 | int fd; | |
4583 | #endif | |
4584 | U32 u; | |
4585 | #ifdef VMS | |
4586 | # include <starlet.h> | |
4587 | /* when[] = (low 32 bits, high 32 bits) of time since epoch | |
4588 | * in 100-ns units, typically incremented ever 10 ms. */ | |
4589 | unsigned int when[2]; | |
4590 | #else | |
4591 | # ifdef HAS_GETTIMEOFDAY | |
4592 | struct timeval when; | |
4593 | # else | |
4594 | Time_t when; | |
4595 | # endif | |
4596 | #endif | |
4597 | ||
4598 | /* This test is an escape hatch, this symbol isn't set by Configure. */ | |
4599 | #ifndef PERL_NO_DEV_RANDOM | |
4600 | #ifndef PERL_RANDOM_DEVICE | |
4601 | /* /dev/random isn't used by default because reads from it will block | |
4602 | * if there isn't enough entropy available. You can compile with | |
4603 | * PERL_RANDOM_DEVICE to it if you'd prefer Perl to block until there | |
4604 | * is enough real entropy to fill the seed. */ | |
4605 | # define PERL_RANDOM_DEVICE "/dev/urandom" | |
4606 | #endif | |
4607 | fd = PerlLIO_open(PERL_RANDOM_DEVICE, 0); | |
4608 | if (fd != -1) { | |
4609 | if (PerlLIO_read(fd, &u, sizeof u) != sizeof u) | |
4610 | u = 0; | |
4611 | PerlLIO_close(fd); | |
4612 | if (u) | |
4613 | return u; | |
4614 | } | |
4615 | #endif | |
4616 | ||
4617 | #ifdef VMS | |
4618 | _ckvmssts(sys$gettim(when)); | |
4619 | u = (U32)SEED_C1 * when[0] + (U32)SEED_C2 * when[1]; | |
4620 | #else | |
4621 | # ifdef HAS_GETTIMEOFDAY | |
4622 | PerlProc_gettimeofday(&when,NULL); | |
4623 | u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec; | |
4624 | # else | |
4625 | (void)time(&when); | |
4626 | u = (U32)SEED_C1 * when; | |
4627 | # endif | |
4628 | #endif | |
4629 | u += SEED_C3 * (U32)PerlProc_getpid(); | |
4630 | u += SEED_C4 * (U32)PTR2UV(PL_stack_sp); | |
4631 | #ifndef PLAN9 /* XXX Plan9 assembler chokes on this; fix needed */ | |
4632 | u += SEED_C5 * (U32)PTR2UV(&when); | |
4633 | #endif | |
4634 | return u; | |
4635 | } | |
4636 | ||
bed60192 | 4637 | UV |
a783c5f4 | 4638 | Perl_get_hash_seed(pTHX) |
bed60192 JH |
4639 | { |
4640 | char *s = PerlEnv_getenv("PERL_HASH_SEED"); | |
4641 | UV myseed = 0; | |
4642 | ||
4643 | if (s) | |
4644 | while (isSPACE(*s)) s++; | |
4645 | if (s && isDIGIT(*s)) | |
4646 | myseed = (UV)Atoul(s); | |
4647 | else | |
4648 | #ifdef USE_HASH_SEED_EXPLICIT | |
4649 | if (s) | |
4650 | #endif | |
4651 | { | |
4652 | /* Compute a random seed */ | |
4653 | (void)seedDrand01((Rand_seed_t)seed()); | |
bed60192 JH |
4654 | myseed = (UV)(Drand01() * (NV)UV_MAX); |
4655 | #if RANDBITS < (UVSIZE * 8) | |
4656 | /* Since there are not enough randbits to to reach all | |
4657 | * the bits of a UV, the low bits might need extra | |
4658 | * help. Sum in another random number that will | |
4659 | * fill in the low bits. */ | |
4660 | myseed += | |
4661 | (UV)(Drand01() * (NV)((1 << ((UVSIZE * 8 - RANDBITS))) - 1)); | |
4662 | #endif /* RANDBITS < (UVSIZE * 8) */ | |
6cfd5ea7 JH |
4663 | if (myseed == 0) { /* Superparanoia. */ |
4664 | myseed = (UV)(Drand01() * (NV)UV_MAX); /* One more chance. */ | |
4665 | if (myseed == 0) | |
4666 | Perl_croak(aTHX_ "Your random numbers are not that random"); | |
4667 | } | |
bed60192 | 4668 | } |
008fb0c0 | 4669 | PL_rehash_seed_set = TRUE; |
bed60192 JH |
4670 | |
4671 | return myseed; | |
4672 | } |