3 * Copyright (c) 1991-1994, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
18 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
22 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
31 /* Put this after #includes because fork and vfork prototypes may
42 # include <sys/file.h>
48 static void xstat _((void));
53 /* paranoid version of malloc */
55 /* NOTE: Do not call the next three routines directly. Use the macros
56 * in handy.h, so that we can easily redefine everything to do tracking of
57 * allocated hunks back to the original New to track down any memory leaks.
58 * XXX This advice seems to be widely ignored :-( --AD August 1996.
72 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
78 croak("panic: malloc");
80 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
81 #if !(defined(I286) || defined(atarist))
82 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
84 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
91 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
97 /* paranoid version of realloc */
100 saferealloc(where,size)
109 #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
111 #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
115 PerlIO_printf(PerlIO_stderr(), "Reallocation too large: %lx\n", size) FLUSH;
120 croak("Null realloc");
123 croak("panic: realloc");
125 ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
127 #if !(defined(I286) || defined(atarist))
129 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,an++);
130 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
134 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
135 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
144 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
150 /* safe version of free */
156 #if !(defined(I286) || defined(atarist))
157 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",where,an++));
159 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",where,an++));
167 /* safe version of calloc */
170 safecalloc(count, size)
177 if (size * count > 0xffff) {
178 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size * count) FLUSH;
183 if ((long)size < 0 || (long)count < 0)
184 croak("panic: calloc");
186 #if !(defined(I286) || defined(atarist))
187 DEBUG_m(PerlIO_printf(PerlIO_stderr(), "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
189 DEBUG_m(PerlIO_printf(PerlIO_stderr(), "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
192 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
194 memset((void*)ptr, 0, size);
200 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
206 #endif /* !safemalloc */
210 #define ALIGN sizeof(long)
217 register Malloc_t where;
219 where = safemalloc(size + ALIGN);
223 return where + ALIGN;
227 safexrealloc(where,size)
231 register Malloc_t new = saferealloc(where - ALIGN, size + ALIGN);
244 x = where[0] + 100 * where[1];
250 safexcalloc(x,count,size)
255 register Malloc_t where;
257 where = safexmalloc(x, size * count + ALIGN);
259 memset((void*)where + ALIGN, 0, size * count);
262 return where + ALIGN;
270 for (i = 0; i < MAXXCOUNT; i++) {
271 if (xcount[i] > lastxcount[i]) {
272 PerlIO_printf(PerlIO_stderr(),"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]);
273 lastxcount[i] = xcount[i];
278 #endif /* LEAKTEST */
280 /* copy a string up to some (non-backslashed) delimiter, if any */
283 cpytill(to,from,fromend,delim,retlen)
286 register char *fromend;
292 for (; from < fromend; from++,to++) {
294 if (from[1] == delim)
296 else if (from[1] == '\\')
299 else if (*from == delim)
304 *retlen = to - origto;
308 /* return ptr to little string in big string, NULL if not found */
309 /* This routine was donated by Corey Satten. */
314 register char *little;
316 register char *s, *x;
327 for (x=big,s=little; *s; /**/ ) {
341 /* same as instr but allow embedded nulls */
344 ninstr(big, bigend, little, lend)
346 register char *bigend;
350 register char *s, *x;
351 register I32 first = *little;
352 register char *littleend = lend;
354 if (!first && little >= littleend)
356 if (bigend - big < littleend - little)
358 bigend -= littleend - little++;
359 while (big <= bigend) {
362 for (x=big,s=little; s < littleend; /**/ ) {
374 /* reverse of the above--find last substring */
377 rninstr(big, bigend, little, lend)
383 register char *bigbeg;
384 register char *s, *x;
385 register I32 first = *little;
386 register char *littleend = lend;
388 if (!first && little >= littleend)
391 big = bigend - (littleend - little++);
392 while (big >= bigbeg) {
395 for (x=big+2,s=little; s < littleend; /**/ ) {
407 /* Initialize the fold[] array. */
413 for (i = 0; i < 256; i++) {
414 if (isUPPER(i)) fold[i] = toLOWER(i);
415 else if (isLOWER(i)) fold[i] = toUPPER(i);
420 /* Initialize locale (and the fold[] array).*/
422 perl_init_i18nl10n(printwarn)
427 * 1 = set ok or not applicable,
428 * 0 = fallback to C locale,
429 * -1 = fallback to C locale failed
431 #if defined(HAS_SETLOCALE)
432 char * lc_all = getenv("LC_ALL");
433 char * lc_ctype = getenv("LC_CTYPE");
434 char * lc_collate = getenv("LC_COLLATE");
435 char * lang = getenv("LANG");
436 int setlocale_failure = 0;
438 #define SETLOCALE_LC_CTYPE 0x01
439 #define SETLOCALE_LC_COLLATE 0x02
442 if (setlocale(LC_CTYPE, "") == 0)
443 setlocale_failure |= SETLOCALE_LC_CTYPE;
447 if (setlocale(LC_COLLATE, "") == 0)
448 setlocale_failure |= SETLOCALE_LC_COLLATE;
450 lc_collate_active = 1;
453 if (setlocale_failure && (lc_all || lang)) {
458 (!(perl_badlang = getenv("PERL_BADLANG")) || atoi(perl_badlang))) {
460 PerlIO_printf(PerlIO_stderr(),
461 "perl: warning: Setting locale failed for the categories:\n\t");
463 if (setlocale_failure & SETLOCALE_LC_CTYPE)
464 PerlIO_printf(PerlIO_stderr(),
468 if (setlocale_failure & SETLOCALE_LC_COLLATE)
469 PerlIO_printf(PerlIO_stderr(),
472 PerlIO_printf(PerlIO_stderr(),
475 PerlIO_printf(PerlIO_stderr(),
476 "perl: warning: Please check that your locale settings:\n");
478 PerlIO_printf(PerlIO_stderr(),
479 "\tLC_ALL = %c%s%c,\n",
481 lc_all ? lc_all : "unset",
485 if (setlocale_failure & SETLOCALE_LC_CTYPE)
486 PerlIO_printf(PerlIO_stderr(),
487 "\tLC_CTYPE = %c%s%c,\n",
488 lc_ctype ? '"' : '(',
489 lc_ctype ? lc_ctype : "unset",
494 if (setlocale_failure & SETLOCALE_LC_COLLATE)
495 PerlIO_printf(PerlIO_stderr(),
496 "\tLC_COLLATE = %c%s%c,\n",
497 lc_collate ? '"' : '(',
498 lc_collate ? lc_collate : "unset",
499 lc_collate ? '"' : ')'
502 PerlIO_printf(PerlIO_stderr(),
505 lang ? lang : "unset",
509 PerlIO_printf(PerlIO_stderr(),
510 " are supported and installed on your system.\n");
516 if (setlocale_failure) {
517 PerlIO_printf(PerlIO_stderr(),
518 "perl: warning: Falling back to the \"C\" locale.\n");
519 if (setlocale(LC_ALL, "C") == NULL) {
521 PerlIO_printf(PerlIO_stderr(),
522 "perl: warning: Failed to fall back to the \"C\" locale.\n");
526 PerlIO_printf(PerlIO_stderr(),
527 "perl: warning: Cannot fall back to the \"C\" locale.\n");
531 if (setlocale_failure & SETLOCALE_LC_CTYPE == 0)
534 #endif /* #if defined(HAS_SETLOCALE) */
540 mem_collxfrm(m, n, nx) /* mem_collxfrm() does strxfrm() for (data,size) */
541 const char *m; /* "strings", that is, transforms normal eight-bit */
542 const Size_t n; /* data into a format that can be memcmp()ed to get */
543 Size_t * nx; /* 'the right' result for each locale. */
544 { /* Uses strxfrm() but handles embedded NULs. */
550 /* the expansion factor of 16 has been seen with strxfrm() */
551 ma = (lc_collate_active ? 16 : 1) * n + 1;
556 Renew(mx, ma, char); \
561 New(171, mx, ma, char);
567 for (*nx = 0, xc = 0; xc < n; ) {
573 } while (xc < n && m[xc] == 0);
576 dx = strxfrm(mx + *nx, m + xc, ma - *nx);
583 xc += strlen(mx + *nx);
591 #endif /* HAS_STRXFRM */
597 fbm_compile(sv, iflag)
601 register unsigned char *s;
602 register unsigned char *table;
604 register U32 len = SvCUR(sv);
609 return; /* can't have offsets that big */
611 table = (unsigned char*)(SvPVX(sv) + len + 1);
613 for (i = 0; i < 256; i++) {
617 while (s >= (unsigned char*)(SvPVX(sv)))
619 if (table[*s] == len) {
622 table[*s] = table[fold[*s]] = i;
636 sv_upgrade(sv, SVt_PVBM);
637 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
640 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
642 register U32 tmp, foldtmp;
644 for (i = 0; i < len; i++) {
646 foldtmp=freq[fold[s[i]]];
647 if (tmp < frequency && foldtmp < frequency) {
649 /* choose most frequent among the two */
650 frequency = (tmp > foldtmp) ? tmp : foldtmp;
655 for (i = 0; i < len; i++) {
656 if (freq[s[i]] < frequency) {
658 frequency = freq[s[i]];
662 BmRARE(sv) = s[rarest];
663 BmPREVIOUS(sv) = rarest;
664 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
668 fbm_instr(big, bigend, littlestr)
670 register unsigned char *bigend;
673 register unsigned char *s;
675 register I32 littlelen;
676 register unsigned char *little;
677 register unsigned char *table;
678 register unsigned char *olds;
679 register unsigned char *oldlittle;
681 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
683 char *l = SvPV(littlestr,len);
686 return ninstr((char*)big,(char*)bigend, l, l + len);
689 littlelen = SvCUR(littlestr);
690 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
691 if (littlelen > bigend - big)
693 little = (unsigned char*)SvPVX(littlestr);
694 if (SvCASEFOLD(littlestr)) { /* oops, fake it */
695 big = bigend - littlelen; /* just start near end */
696 if (bigend[-1] == '\n' && little[littlelen-1] != '\n')
700 s = bigend - littlelen;
701 if (*s == *little && memcmp((char*)s,(char*)little,littlelen)==0)
702 return (char*)s; /* how sweet it is */
703 else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
706 if (*s == *little && memcmp((char*)s,(char*)little,littlelen)==0)
712 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
713 if (--littlelen >= bigend - big)
716 oldlittle = little = table - 2;
717 if (SvCASEFOLD(littlestr)) { /* case insensitive? */
721 if (tmp = table[*s]) {
723 if (bigend - s > tmp) {
728 if ((s += tmp) < bigend)
734 tmp = littlelen; /* less expensive than calling strncmp() */
737 if (*--s == *--little || fold[*s] == *little)
739 s = olds + 1; /* here we pay the price for failure */
741 if (s < bigend) /* fake up continue to outer loop */
753 if (tmp = table[*s]) {
755 if (bigend - s > tmp) {
760 if ((s += tmp) < bigend)
766 tmp = littlelen; /* less expensive than calling strncmp() */
769 if (*--s == *--little)
771 s = olds + 1; /* here we pay the price for failure */
773 if (s < bigend) /* fake up continue to outer loop */
785 screaminstr(bigstr, littlestr)
789 register unsigned char *s, *x;
790 register unsigned char *big;
792 register I32 previous;
794 register unsigned char *little;
795 register unsigned char *bigend;
796 register unsigned char *littleend;
798 if ((pos = screamfirst[BmRARE(littlestr)]) < 0)
800 little = (unsigned char *)(SvPVX(littlestr));
801 littleend = little + SvCUR(littlestr);
803 previous = BmPREVIOUS(littlestr);
804 big = (unsigned char *)(SvPVX(bigstr));
805 bigend = big + SvCUR(bigstr);
806 while (pos < previous) {
807 if (!(pos += screamnext[pos]))
811 if (SvCASEFOLD(littlestr)) { /* case insignificant? */
813 if (big[pos-previous] != first && big[pos-previous] != fold[first])
815 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
818 if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) {
824 return (char *)(big+pos-previous);
826 pos += screamnext[pos] /* does this goof up anywhere? */
831 if (big[pos-previous] != first)
833 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
842 return (char *)(big+pos-previous);
843 } while ( pos += screamnext[pos] );
845 #else /* !POINTERRIGOR */
847 if (SvCASEFOLD(littlestr)) { /* case insignificant? */
849 if (big[pos] != first && big[pos] != fold[first])
851 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
854 if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) {
860 return (char *)(big+pos);
862 pos += screamnext[pos] /* does this goof up anywhere? */
867 if (big[pos] != first)
869 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
878 return (char *)(big+pos);
880 pos += screamnext[pos]
883 #endif /* POINTERRIGOR */
898 if (fold[*a++] == *b++)
905 /* copy a string to a safe spot */
911 register char *newaddr;
913 New(902,newaddr,strlen(sv)+1,char);
914 (void)strcpy(newaddr,sv);
918 /* same thing but with a known length */
925 register char *newaddr;
927 New(903,newaddr,len+1,char);
928 Copy(sv,newaddr,len,char); /* might not be null terminated */
929 newaddr[len] = '\0'; /* is now */
933 #if !defined(I_STDARG) && !defined(I_VARARGS)
936 * Fallback on the old hackers way of doing varargs
941 mess(pat,a1,a2,a3,a4)
947 I32 usermess = strEQ(pat,"%s");
952 tmpstr = sv_newmortal();
953 sv_setpv(tmpstr, (char*)a1);
954 *s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1];
957 (void)sprintf(s,pat,a1,a2,a3,a4);
963 strcpy(s, " during global destruction.\n");
965 if (curcop->cop_line) {
966 (void)sprintf(s," at %s line %ld",
967 SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line);
970 if (GvIO(last_in_gv) &&
971 IoLINES(GvIOp(last_in_gv)) ) {
972 (void)sprintf(s,", <%s> %s %ld",
973 last_in_gv == argvgv ? "" : GvENAME(last_in_gv),
974 strEQ(rs,"\n") ? "line" : "chunk",
975 (long)IoLINES(GvIOp(last_in_gv)));
978 (void)strcpy(s,".\n");
982 sv_catpv(tmpstr,buf+1);
985 if (s - s_start >= sizeof(buf)) { /* Ooops! */
987 PerlIO_puts(PerlIO_stderr(), SvPVX(tmpstr));
989 PerlIO_puts(PerlIO_stderr(), buf);
990 PerlIO_puts(PerlIO_stderr(),"panic: message overflow - memory corrupted!\n");
994 return SvPVX(tmpstr);
1000 void croak(pat,a1,a2,a3,a4)
1002 long a1, a2, a3, a4;
1010 message = mess(pat,a1,a2,a3,a4);
1012 SV *olddiehook = diehook;
1013 diehook = Nullsv; /* sv_2cv might call croak() */
1014 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1015 diehook = olddiehook;
1016 if (cv && !CvDEPTH(cv)) {
1021 PUSHs(sv_2mortal(newSVpv(message,0)));
1023 perl_call_sv((SV*)cv, G_DISCARD);
1027 restartop = die_where(message);
1028 Siglongjmp(top_env, 3);
1030 PerlIO_puts(PerlIO_stderr(),message);
1031 (void)PerlIO_flush(PerlIO_stderr());
1037 (void)UNLINK(e_tmpname);
1038 Safefree(e_tmpname);
1041 statusvalue = SHIFTSTATUS(statusvalue);
1043 my_exit((U32)vaxc$errno?vaxc$errno:errno?errno:statusvalue?statusvalue:SS$_ABORT);
1045 my_exit((U32)((errno&255)?errno:((statusvalue&255)?statusvalue:255)));
1050 void warn(pat,a1,a2,a3,a4)
1052 long a1, a2, a3, a4;
1060 message = mess(pat,a1,a2,a3,a4);
1062 SV *oldwarnhook = warnhook;
1063 warnhook = Nullsv; /* sv_2cv might end up calling warn() */
1064 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1065 warnhook = oldwarnhook;
1066 if (cv && !CvDEPTH(cv)) {
1071 PUSHs(sv_2mortal(newSVpv(message,0)));
1073 perl_call_sv((SV*)cv, G_DISCARD);
1077 PerlIO_puts(PerlIO_stderr(),message);
1081 (void)PerlIO_flush(PerlIO_stderr());
1084 #else /* !defined(I_STDARG) && !defined(I_VARARGS) */
1088 mess(char *pat, va_list *args)
1102 #ifdef USE_CHAR_VSPRINTF
1110 usermess = strEQ(pat, "%s");
1112 tmpstr = sv_newmortal();
1113 sv_setpv(tmpstr, va_arg(*args, char *));
1114 *s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1];
1117 (void) vsprintf(s,pat,*args);
1122 if (s[-1] != '\n') {
1124 strcpy(s, " during global destruction.\n");
1126 if (curcop->cop_line) {
1127 (void)sprintf(s," at %s line %ld",
1128 SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line);
1131 if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
1132 bool line_mode = (RsSIMPLE(rs) &&
1133 SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
1134 (void)sprintf(s,", <%s> %s %ld",
1135 last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
1136 line_mode ? "line" : "chunk",
1137 (long)IoLINES(GvIOp(last_in_gv)));
1140 (void)strcpy(s,".\n");
1144 sv_catpv(tmpstr,buf+1);
1147 if (s - s_start >= sizeof(buf)) { /* Ooops! */
1149 PerlIO_puts(PerlIO_stderr(), SvPVX(tmpstr));
1151 PerlIO_puts(PerlIO_stderr(), buf);
1152 PerlIO_puts(PerlIO_stderr(), "panic: message overflow - memory corrupted!\n");
1156 return SvPVX(tmpstr);
1163 croak(char* pat, ...)
1167 croak(pat, va_alist)
1179 va_start(args, pat);
1183 message = mess(pat, &args);
1186 SV *olddiehook = diehook;
1187 diehook = Nullsv; /* sv_2cv might call croak() */
1188 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1189 diehook = olddiehook;
1190 if (cv && !CvDEPTH(cv)) {
1195 PUSHs(sv_2mortal(newSVpv(message,0)));
1197 perl_call_sv((SV*)cv, G_DISCARD);
1201 restartop = die_where(message);
1202 Siglongjmp(top_env, 3);
1204 PerlIO_puts(PerlIO_stderr(),message);
1205 (void)PerlIO_flush(PerlIO_stderr());
1211 (void)UNLINK(e_tmpname);
1212 Safefree(e_tmpname);
1215 statusvalue = SHIFTSTATUS(statusvalue);
1217 my_exit((U32)(vaxc$errno?vaxc$errno:(statusvalue?statusvalue:44)));
1219 my_exit((U32)((errno&255)?errno:((statusvalue&255)?statusvalue:255)));
1240 va_start(args, pat);
1244 message = mess(pat, &args);
1248 SV *oldwarnhook = warnhook;
1249 warnhook = Nullsv; /* sv_2cv might end up calling warn() */
1250 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1251 warnhook = oldwarnhook;
1252 if (cv && !CvDEPTH(cv)) {
1257 PUSHs(sv_2mortal(newSVpv(message,0)));
1259 perl_call_sv((SV*)cv, G_DISCARD);
1263 PerlIO_puts(PerlIO_stderr(),message);
1267 (void)PerlIO_flush(PerlIO_stderr());
1269 #endif /* !defined(I_STDARG) && !defined(I_VARARGS) */
1271 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1276 register I32 i=setenv_getix(nam); /* where does it go? */
1278 if (environ == origenviron) { /* need we copy environment? */
1284 for (max = i; environ[max]; max++) ;
1285 New(901,tmpenv, max+2, char*);
1286 for (j=0; j<max; j++) /* copy environment */
1287 tmpenv[j] = savepv(environ[j]);
1288 tmpenv[max] = Nullch;
1289 environ = tmpenv; /* tell exec where it is now */
1292 while (environ[i]) {
1293 environ[i] = environ[i+1];
1298 if (!environ[i]) { /* does not exist yet */
1299 Renew(environ, i+2, char*); /* just expand it a bit */
1300 environ[i+1] = Nullch; /* make sure it's null terminated */
1303 Safefree(environ[i]);
1304 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
1306 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1308 /* MS-DOS requires environment variable names to be in uppercase */
1309 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1310 * some utilities and applications may break because they only look
1311 * for upper case strings. (Fixed strupr() bug here.)]
1313 strcpy(environ[i],nam); strupr(environ[i]);
1314 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1322 register I32 i, len = strlen(nam);
1324 for (i = 0; environ[i]; i++) {
1325 if (strnEQ(environ[i],nam,len) && environ[i][len] == '=')
1326 break; /* strnEQ must come first to avoid */
1327 } /* potential SEGV's */
1332 #ifdef UNLINK_ALL_VERSIONS
1334 unlnk(f) /* unlink all versions of a file */
1339 for (i = 0; unlink(f) >= 0; i++) ;
1344 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
1346 my_bcopy(from,to,len)
1347 register char *from;
1353 if (from - to >= 0) {
1361 *(--to) = *(--from);
1367 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
1383 my_memcmp(s1,s2,len)
1384 register unsigned char *s1;
1385 register unsigned char *s2;
1391 if (tmp = *s1++ - *s2++)
1396 #endif /* HAS_MEMCMP */
1398 #if defined(I_STDARG) || defined(I_VARARGS)
1401 #ifdef USE_CHAR_VSPRINTF
1406 vsprintf(dest, pat, args)
1407 char *dest, *pat, *args;
1411 fakebuf._ptr = dest;
1412 fakebuf._cnt = 32767;
1416 fakebuf._flag = _IOWRT|_IOSTRG;
1417 _doprnt(pat, args, &fakebuf); /* what a kludge */
1418 (void)putc('\0', &fakebuf);
1419 #ifdef USE_CHAR_VSPRINTF
1422 return 0; /* perl doesn't use return value */
1426 #endif /* HAS_VPRINTF */
1427 #endif /* I_VARARGS || I_STDARGS */
1430 #if BYTEORDER != 0x4321
1432 #ifndef CAN_PROTOTYPE
1439 #if (BYTEORDER & 1) == 0
1442 result = ((s & 255) << 8) + ((s >> 8) & 255);
1450 #ifndef CAN_PROTOTYPE
1459 char c[sizeof(long)];
1462 #if BYTEORDER == 0x1234
1463 u.c[0] = (l >> 24) & 255;
1464 u.c[1] = (l >> 16) & 255;
1465 u.c[2] = (l >> 8) & 255;
1469 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
1470 croak("Unknown BYTEORDER\n");
1475 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1476 u.c[o & 0xf] = (l >> s) & 255;
1484 #ifndef CAN_PROTOTYPE
1493 char c[sizeof(long)];
1496 #if BYTEORDER == 0x1234
1497 u.c[0] = (l >> 24) & 255;
1498 u.c[1] = (l >> 16) & 255;
1499 u.c[2] = (l >> 8) & 255;
1503 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
1504 croak("Unknown BYTEORDER\n");
1511 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1512 l |= (u.c[o & 0xf] & 255) << s;
1519 #endif /* BYTEORDER != 0x4321 */
1523 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1524 * If these functions are defined,
1525 * the BYTEORDER is neither 0x1234 nor 0x4321.
1526 * However, this is not assumed.
1530 #define HTOV(name,type) \
1537 char c[sizeof(type)]; \
1541 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1542 u.c[i] = (n >> s) & 0xFF; \
1547 #define VTOH(name,type) \
1554 char c[sizeof(type)]; \
1560 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1561 n += (u.c[i] & 0xFF) << s; \
1566 #if defined(HAS_HTOVS) && !defined(htovs)
1569 #if defined(HAS_HTOVL) && !defined(htovl)
1572 #if defined(HAS_VTOHS) && !defined(vtohs)
1575 #if defined(HAS_VTOHL) && !defined(vtohl)
1579 #if (!defined(DOSISH) || defined(HAS_FORK)) && !defined(VMS) /* VMS' my_popen() is in
1580 VMS.c, same with OS/2. */
1587 register I32 this, that;
1590 I32 doexec = strNE(cmd,"-");
1594 return my_syspopen(cmd,mode);
1599 this = (*mode == 'w');
1604 taint_proper("Insecure %s%s", "EXEC");
1607 while ((pid = (doexec?vfork():fork())) < 0) {
1608 if (errno != EAGAIN) {
1611 croak("Can't fork");
1622 if (p[THIS] != (*mode == 'r')) {
1623 dup2(p[THIS], *mode == 'r');
1627 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
1633 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
1636 do_exec(cmd); /* may or may not use the shell */
1640 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1641 sv_setiv(GvSV(tmpgv),(I32)getpid());
1643 hv_clear(pidstatus); /* we have no children */
1648 do_execfree(); /* free any memory malloced by child on vfork */
1650 if (p[that] < p[this]) {
1651 dup2(p[this], p[that]);
1655 sv = *av_fetch(fdpid,p[this],TRUE);
1656 (void)SvUPGRADE(sv,SVt_IV);
1659 return PerlIO_fdopen(p[this], mode);
1662 #if defined(atarist)
1669 /* Needs work for PerlIO ! */
1670 return popen(PerlIO_exportFILE(cmd), mode);
1674 #endif /* !DOSISH */
1681 struct stat tmpstatbuf;
1683 PerlIO_printf(PerlIO_stderr(),"%s", s);
1684 for (fd = 0; fd < 32; fd++) {
1685 if (Fstat(fd,&tmpstatbuf) >= 0)
1686 PerlIO_printf(PerlIO_stderr()," %d",fd);
1688 PerlIO_printf(PerlIO_stderr(),"\n");
1698 #if defined(HAS_FCNTL) && defined(F_DUPFD)
1702 return fcntl(oldfd, F_DUPFD, newfd);
1711 while ((fd = dup(oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
1714 close(fdtmp[--fdx]);
1720 #if (!defined(DOSISH) || defined(HAS_FORK)) && !defined(VMS) /* VMS' my_popen() is in VMS.c */
1725 Signal_t (*hstat)(), (*istat)(), (*qstat)();
1730 svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
1731 pid = (int)SvIVX(*svp);
1735 if (pid == -1) { /* Opened by popen. */
1736 return my_syspclose(ptr);
1741 if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
1743 hstat = signal(SIGHUP, SIG_IGN);
1744 istat = signal(SIGINT, SIG_IGN);
1745 qstat = signal(SIGQUIT, SIG_IGN);
1747 pid = wait4pid(pid, &status, 0);
1748 } while (pid == -1 && errno == EINTR);
1749 signal(SIGHUP, hstat);
1750 signal(SIGINT, istat);
1751 signal(SIGQUIT, qstat);
1752 return(pid < 0 ? pid : status);
1754 #endif /* !DOSISH */
1756 #if !defined(DOSISH) || defined(OS2)
1758 wait4pid(pid,statusp,flags)
1770 sprintf(spid, "%d", pid);
1771 svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
1772 if (svp && *svp != &sv_undef) {
1773 *statusp = SvIVX(*svp);
1774 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
1781 hv_iterinit(pidstatus);
1782 if (entry = hv_iternext(pidstatus)) {
1783 pid = atoi(hv_iterkey(entry,(I32*)statusp));
1784 sv = hv_iterval(pidstatus,entry);
1785 *statusp = SvIVX(sv);
1786 sprintf(spid, "%d", pid);
1787 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
1792 return waitpid(pid,statusp,flags);
1795 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
1800 croak("Can't do waitpid with flags");
1802 while ((result = wait(statusp)) != pid && pid > 0 && result >= 0)
1803 pidgone(result,*statusp);
1812 #endif /* !DOSISH */
1823 sprintf(spid, "%d", pid);
1824 sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
1825 (void)SvUPGRADE(sv,SVt_IV);
1830 #if defined(atarist) || defined(OS2)
1833 int /* Cannot prototype with I32
1842 /* Needs work for PerlIO ! */
1843 FILE *f = PerlIO_findFILE(ptr);
1844 I32 result = pclose(f);
1845 PerlIO_releaseFILE(ptr,f);
1851 repeatcpy(to,from,len,count)
1853 register char *from;
1858 register char *frombase = from;
1866 while (count-- > 0) {
1867 for (todo = len; todo > 0; todo--) {
1874 #ifndef CASTNEGFLOAT
1882 # define BIGDOUBLE 2147483648.0
1884 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
1887 return (unsigned long)f;
1889 return (unsigned long)along;
1896 /* Unfortunately, on some systems the cast_uv() function doesn't
1897 work with the system-supplied definition of ULONG_MAX. The
1898 comparison (f >= ULONG_MAX) always comes out true. It must be a
1899 problem with the compiler constant folding.
1901 In any case, this workaround should be fine on any two's complement
1902 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
1904 --Andy Dougherty <doughera@lafcol.lafayette.edu>
1907 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
1909 -- Kenneth Albanowski <kjahds@kjahds.com>
1913 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
1921 return (I32) I32_MAX;
1923 return (I32) I32_MIN;
1943 return (UV) MY_UV_MAX;
1955 char *fa = strrchr(a,'/');
1956 char *fb = strrchr(b,'/');
1957 struct stat tmpstatbuf1;
1958 struct stat tmpstatbuf2;
1960 #define MAXPATHLEN 1024
1962 char tmpbuf[MAXPATHLEN+1];
1977 strncpy(tmpbuf, a, fa - a);
1978 if (Stat(tmpbuf, &tmpstatbuf1) < 0)
1983 strncpy(tmpbuf, b, fb - b);
1984 if (Stat(tmpbuf, &tmpstatbuf2) < 0)
1986 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
1987 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
1989 #endif /* !HAS_RENAME */
1992 scan_oct(start, len, retlen)
1997 register char *s = start;
1998 register unsigned long retval = 0;
2000 while (len && *s >= '0' && *s <= '7') {
2002 retval |= *s++ - '0';
2005 if (dowarn && len && (*s == '8' || *s == '9'))
2006 warn("Illegal octal digit ignored");
2007 *retlen = s - start;
2012 scan_hex(start, len, retlen)
2017 register char *s = start;
2018 register unsigned long retval = 0;
2021 while (len-- && *s && (tmp = strchr(hexdigit, *s))) {
2023 retval |= (tmp - hexdigit) & 15;
2026 *retlen = s - start;
2033 * This hack is to force load of "huge" support from libm.a
2034 * So it is in perl for (say) POSIX to use.
2035 * Needed for SunOS with Sun's 'acc' for example.