X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=pp_sys.c;h=ec12cd4aa59e1d39f2626ab83d66ff58864635dc;hb=133fac12ff7e3894deb31a204a9a12453b87bbf0;hp=de4d692bd489eec5c0c4ee0a79d007242142e695;hpb=159b6efe04c56d08ae56a63921b5ab3a69ac2ee9;p=p5sagit%2Fp5-mst-13.2.git diff --git a/pp_sys.c b/pp_sys.c index de4d692..ec12cd4 100644 --- a/pp_sys.c +++ b/pp_sys.c @@ -13,6 +13,8 @@ * cloven by a great fissure, out of which the red glare came, now leaping * up, now dying down into darkness; and all the while far below there was * a rumour and a trouble as of great engines throbbing and labouring. + * + * [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"] */ /* This file contains system pp ("push/pop") functions that @@ -27,6 +29,8 @@ #include "EXTERN.h" #define PERL_IN_PP_SYS_C #include "perl.h" +#include "time64.h" +#include "time64.c" #ifdef I_SHADOW /* Shadow password support for solaris - pdo@cs.umd.edu @@ -199,15 +203,6 @@ void endservent(void); #undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */ -/* AIX 5.2 and below use mktime for localtime, and defines the edge case - * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64 - * available in the 32bit environment, which could warrant Configure - * checks in the future. - */ -#ifdef _AIX -#define LOCALTIME_EDGECASE_BROKEN -#endif - /* F_OK unused: if stat() cannot find it... */ #if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK) @@ -247,7 +242,6 @@ S_emulate_eaccess(pTHX_ const char* path, Mode_t mode) const Gid_t egid = getegid(); int res; - LOCK_CRED_MUTEX; #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID) Perl_croak(aTHX_ "switching effective uid is not implemented"); #else @@ -293,7 +287,6 @@ S_emulate_eaccess(pTHX_ const char* path, Mode_t mode) #endif #endif Perl_croak(aTHX_ "leaving effective gid failed"); - UNLOCK_CRED_MUTEX; return res; } @@ -807,11 +800,6 @@ PP(pp_tie) break; case SVt_PVGV: if (isGV_with_GP(varsv)) { -#ifdef GV_UNIQUE_CHECK - if (GvUNIQUE((const GV *)varsv)) { - Perl_croak(aTHX_ "Attempt to tie unique GV"); - } -#endif methname = "TIEHANDLE"; how = PERL_MAGIC_tiedscalar; /* For tied filehandles, we apply tiedscalar magic to the IO @@ -1027,7 +1015,7 @@ PP(pp_sselect) if (SvIsCOW(sv)) sv_force_normal_flags(sv, 0); if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0)) - DIE(aTHX_ PL_no_modify); + DIE(aTHX_ "%s", PL_no_modify); } if (!SvPOK(sv)) { if (ckWARN(WARN_MISC)) @@ -1154,6 +1142,17 @@ PP(pp_sselect) #endif } +/* +=for apidoc setdefout + +Sets PL_defoutgv, the default file handle for output, to the passed in +typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference +count of the passed in typeglob is increased by one, and the reference count +of the typeglob that PL_defoutgv points to is decreased by one. + +=cut +*/ + void Perl_setdefout(pTHX_ GV *gv) { @@ -1810,9 +1809,8 @@ PP(pp_send) SV *sv; if (MARK == SP - 1) { - EXTEND(SP, 1000); - sv = sv_2mortal(newSViv(sv_len(*SP))); - PUSHs(sv); + sv = *SP; + mXPUSHi(sv_len(sv)); PUTBACK; } @@ -1921,7 +1919,7 @@ PP(pp_send) DIE(aTHX_ "Offset outside string"); } offset += blen_chars; - } else if (offset >= (IV)blen_chars && blen_chars > 0) { + } else if (offset >= (IV)blen_chars) { Safefree(tmpbuf); DIE(aTHX_ "Offset outside string"); } @@ -2012,51 +2010,60 @@ PP(pp_eof) { dVAR; dSP; GV *gv; + IO *io; + MAGIC *mg; - if (MAXARG == 0) { - if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */ - IO *io; - gv = PL_last_in_gv = GvEGV(PL_argvgv); - io = GvIO(gv); - if (io && !IoIFP(io)) { - if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) { - IoLINES(io) = 0; - IoFLAGS(io) &= ~IOf_START; - do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL); - if ( GvSV(gv) ) { - sv_setpvs(GvSV(gv), "-"); - } - else { - GvSV(gv) = newSVpvs("-"); - } - SvSETMAGIC(GvSV(gv)); - } - else if (!nextargv(gv)) - RETPUSHYES; - } - } + if (MAXARG) + gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */ + else if (PL_op->op_flags & OPf_SPECIAL) + gv = PL_last_in_gv = GvEGV(PL_argvgv); /* eof() - ARGV magic */ + else + gv = PL_last_in_gv; /* eof */ + + if (!gv) + RETPUSHNO; + + if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) { + PUSHMARK(SP); + XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg)); + /* + * in Perl 5.12 and later, the additional paramter is a bitmask: + * 0 = eof + * 1 = eof(FH) + * 2 = eof() <- ARGV magic + */ + if (MAXARG) + mPUSHi(1); /* 1 = eof(FH) - simple, explicit FH */ + else if (PL_op->op_flags & OPf_SPECIAL) + mPUSHi(2); /* 2 = eof() - ARGV magic */ else - gv = PL_last_in_gv; /* eof */ + mPUSHi(0); /* 0 = eof - simple, implicit FH */ + PUTBACK; + ENTER; + call_method("EOF", G_SCALAR); + LEAVE; + SPAGAIN; + RETURN; } - else - gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */ - if (gv) { - IO * const io = GvIO(gv); - MAGIC * mg; - if (io && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) { - PUSHMARK(SP); - XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg)); - PUTBACK; - ENTER; - call_method("EOF", G_SCALAR); - LEAVE; - SPAGAIN; - RETURN; + if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */ + if (io && !IoIFP(io)) { + if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) { + IoLINES(io) = 0; + IoFLAGS(io) &= ~IOf_START; + do_open(gv, "-", 1, FALSE, O_RDONLY, 0, NULL); + if (GvSV(gv)) + sv_setpvs(GvSV(gv), "-"); + else + GvSV(gv) = newSVpvs("-"); + SvSETMAGIC(GvSV(gv)); + } + else if (!nextargv(gv)) + RETPUSHYES; } } - PUSHs(boolSV(!gv || do_eof(gv))); + PUSHs(boolSV(do_eof(gv))); RETURN; } @@ -2967,8 +2974,19 @@ PP(pp_ftrread) int stat_mode = S_IRUSR; bool effective = FALSE; + char opchar = '?'; dSP; + switch (PL_op->op_type) { + case OP_FTRREAD: opchar = 'R'; break; + case OP_FTRWRITE: opchar = 'W'; break; + case OP_FTREXEC: opchar = 'X'; break; + case OP_FTEREAD: opchar = 'r'; break; + case OP_FTEWRITE: opchar = 'w'; break; + case OP_FTEEXEC: opchar = 'x'; break; + } + tryAMAGICftest(opchar); + STACKED_FTEST_CHECK; switch (PL_op->op_type) { @@ -3001,7 +3019,7 @@ PP(pp_ftrread) access_mode = W_OK; #endif stat_mode = S_IWUSR; - /* Fall through */ + /* fall through */ case OP_FTEREAD: #ifndef PERL_EFF_ACCESS @@ -3061,8 +3079,20 @@ PP(pp_ftis) dVAR; I32 result; const int op_type = PL_op->op_type; + char opchar = '?'; dSP; + + switch (op_type) { + case OP_FTIS: opchar = 'e'; break; + case OP_FTSIZE: opchar = 's'; break; + case OP_FTMTIME: opchar = 'M'; break; + case OP_FTCTIME: opchar = 'C'; break; + case OP_FTATIME: opchar = 'A'; break; + } + tryAMAGICftest(opchar); + STACKED_FTEST_CHECK; + result = my_stat(); SPAGAIN; if (result < 0) @@ -3099,8 +3129,25 @@ PP(pp_ftrowned) { dVAR; I32 result; + char opchar = '?'; dSP; + switch (PL_op->op_type) { + case OP_FTROWNED: opchar = 'O'; break; + case OP_FTEOWNED: opchar = 'o'; break; + case OP_FTZERO: opchar = 'z'; break; + case OP_FTSOCK: opchar = 'S'; break; + case OP_FTCHR: opchar = 'c'; break; + case OP_FTBLK: opchar = 'b'; break; + case OP_FTFILE: opchar = 'f'; break; + case OP_FTDIR: opchar = 'd'; break; + case OP_FTPIPE: opchar = 'p'; break; + case OP_FTSUID: opchar = 'u'; break; + case OP_FTSGID: opchar = 'g'; break; + case OP_FTSVTX: opchar = 'k'; break; + } + tryAMAGICftest(opchar); + /* I believe that all these three are likely to be defined on most every system these days. */ #ifndef S_ISUID @@ -3117,6 +3164,7 @@ PP(pp_ftrowned) #endif STACKED_FTEST_CHECK; + result = my_stat(); SPAGAIN; if (result < 0) @@ -3183,8 +3231,13 @@ PP(pp_ftrowned) PP(pp_ftlink) { dVAR; - I32 result = my_lstat(); dSP; + I32 result; + + tryAMAGICftest('l'); + result = my_lstat(); + SPAGAIN; + if (result < 0) RETPUSHUNDEF; if (S_ISLNK(PL_statcache.st_mode)) @@ -3200,6 +3253,8 @@ PP(pp_fttty) GV *gv; SV *tmpsv = NULL; + tryAMAGICftest('t'); + STACKED_FTEST_CHECK; if (PL_op->op_flags & OPf_REF) @@ -3249,6 +3304,8 @@ PP(pp_fttext) GV *gv; PerlIO *fp; + tryAMAGICftest(PL_op->op_type == OP_FTTEXT ? 'T' : 'B'); + STACKED_FTEST_CHECK; if (PL_op->op_flags & OPf_REF) @@ -4010,7 +4067,7 @@ PP(pp_fork) PP(pp_wait) { -#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL) && !defined(__LIBCATAMOUNT__) +#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__) dVAR; dSP; dTARGET; Pid_t childpid; int argflags; @@ -4038,7 +4095,7 @@ PP(pp_wait) PP(pp_waitpid) { -#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL) && !defined(__LIBCATAMOUNT__) +#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(__LIBCATAMOUNT__) dVAR; dSP; dTARGET; const int optype = POPi; const Pid_t pid = TOPi; @@ -4301,6 +4358,7 @@ PP(pp_setpgrp) if (MAXARG < 2) { pgrp = 0; pid = 0; + XPUSHi(-1); } else { pgrp = POPi; @@ -4403,104 +4461,80 @@ PP(pp_tms) #endif /* HAS_TIMES */ } -#ifdef LOCALTIME_EDGECASE_BROKEN -static struct tm *S_my_localtime (pTHX_ Time_t *tp) -{ - auto time_t T; - auto struct tm *P; - - /* No workarounds in the valid range */ - if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000) - return (localtime (tp)); - - /* This edge case is to workaround the undefined behaviour, where the - * TIMEZONE makes the time go beyond the defined range. - * gmtime (0x7fffffff) => 2038-01-19 03:14:07 - * If there is a negative offset in TZ, like MET-1METDST, some broken - * implementations of localtime () (like AIX 5.2) barf with bogus - * return values: - * 0x7fffffff gmtime 2038-01-19 03:14:07 - * 0x7fffffff localtime 1901-12-13 21:45:51 - * 0x7fffffff mylocaltime 2038-01-19 04:14:07 - * 0x3c19137f gmtime 2001-12-13 20:45:51 - * 0x3c19137f localtime 2001-12-13 21:45:51 - * 0x3c19137f mylocaltime 2001-12-13 21:45:51 - * Given that legal timezones are typically between GMT-12 and GMT+12 - * we turn back the clock 23 hours before calling the localtime - * function, and add those to the return value. This will never cause - * day wrapping problems, since the edge case is Tue Jan *19* - */ - T = *tp - 82800; /* 23 hour. allows up to GMT-23 */ - P = localtime (&T); - P->tm_hour += 23; - if (P->tm_hour >= 24) { - P->tm_hour -= 24; - P->tm_mday++; /* 18 -> 19 */ - P->tm_wday++; /* Mon -> Tue */ - P->tm_yday++; /* 18 -> 19 */ - } - return (P); -} /* S_my_localtime */ -#endif - PP(pp_gmtime) { dVAR; dSP; - Time_t when; - const struct tm *tmbuf; + Time64_T when; + struct TM tmbuf; + struct TM *err; + const char *opname = PL_op->op_type == OP_LOCALTIME ? "localtime" : "gmtime"; static const char * const dayname[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; static const char * const monname[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; - if (MAXARG < 1) - (void)time(&when); - else -#ifdef BIG_TIME - when = (Time_t)SvNVx(POPs); -#else - when = (Time_t)SvIVx(POPs); -#endif + if (MAXARG < 1) { + time_t now; + (void)time(&now); + when = (Time64_T)now; + } + else { + double input = Perl_floor(POPn); + when = (Time64_T)input; + if (when != input && ckWARN(WARN_OVERFLOW)) { + Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), + "%s(%.0f) too large", opname, input); + } + } if (PL_op->op_type == OP_LOCALTIME) -#ifdef LOCALTIME_EDGECASE_BROKEN - tmbuf = S_my_localtime(aTHX_ &when); -#else - tmbuf = localtime(&when); -#endif + err = S_localtime64_r(&when, &tmbuf); else - tmbuf = gmtime(&when); + err = S_gmtime64_r(&when, &tmbuf); - if (GIMME != G_ARRAY) { + if (err == NULL && ckWARN(WARN_OVERFLOW)) { + /* XXX %lld broken for quads */ + Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), + "%s(%.0f) failed", opname, (double)when); + } + + if (GIMME != G_ARRAY) { /* scalar context */ SV *tsv; + /* XXX newSVpvf()'s %lld type is broken, so cheat with a double */ + double year = (double)tmbuf.tm_year + 1900; + EXTEND(SP, 1); EXTEND_MORTAL(1); - if (!tmbuf) + if (err == NULL) RETPUSHUNDEF; - tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d", - dayname[tmbuf->tm_wday], - monname[tmbuf->tm_mon], - tmbuf->tm_mday, - tmbuf->tm_hour, - tmbuf->tm_min, - tmbuf->tm_sec, - tmbuf->tm_year + 1900); + + tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %.0f", + dayname[tmbuf.tm_wday], + monname[tmbuf.tm_mon], + tmbuf.tm_mday, + tmbuf.tm_hour, + tmbuf.tm_min, + tmbuf.tm_sec, + year); mPUSHs(tsv); } - else if (tmbuf) { + else { /* list context */ + if ( err == NULL ) + RETURN; + EXTEND(SP, 9); EXTEND_MORTAL(9); - mPUSHi(tmbuf->tm_sec); - mPUSHi(tmbuf->tm_min); - mPUSHi(tmbuf->tm_hour); - mPUSHi(tmbuf->tm_mday); - mPUSHi(tmbuf->tm_mon); - mPUSHi(tmbuf->tm_year); - mPUSHi(tmbuf->tm_wday); - mPUSHi(tmbuf->tm_yday); - mPUSHi(tmbuf->tm_isdst); + mPUSHi(tmbuf.tm_sec); + mPUSHi(tmbuf.tm_min); + mPUSHi(tmbuf.tm_hour); + mPUSHi(tmbuf.tm_mday); + mPUSHi(tmbuf.tm_mon); + mPUSHn(tmbuf.tm_year); + mPUSHi(tmbuf.tm_wday); + mPUSHi(tmbuf.tm_yday); + mPUSHi(tmbuf.tm_isdst); } RETURN; } @@ -5165,13 +5199,13 @@ PP(pp_gpwent) * has a different API than the Solaris/IRIX one. */ # if defined(HAS_GETSPNAM) && !defined(_AIX) { - const int saverrno = errno; + dSAVE_ERRNO; const struct spwd * const spwent = getspnam(pwent->pw_name); /* Save and restore errno so that * underprivileged attempts seem * to have never made the unsccessful * attempt to retrieve the shadow password. */ - errno = saverrno; + RESTORE_ERRNO; if (spwent && spwent->sp_pwdp) sv_setpv(sv, spwent->sp_pwdp); } @@ -5310,7 +5344,11 @@ PP(pp_ggrent) PUSHs(sv); if (grent) { if (which == OP_GGRNAM) +#if Gid_t_sign <= 0 sv_setiv(sv, (IV)grent->gr_gid); +#else + sv_setuv(sv, (UV)grent->gr_gid); +#endif else sv_setpv(sv, grent->gr_name); } @@ -5326,7 +5364,11 @@ PP(pp_ggrent) PUSHs(sv_mortalcopy(&PL_sv_no)); #endif +#if Gid_t_sign <= 0 mPUSHi(grent->gr_gid); +#else + mPUSHu(grent->gr_gid); +#endif #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API)) /* In UNICOS/mk (_CRAYMPP) the multithreading @@ -5549,15 +5591,15 @@ static int lockf_emulate_flock(int fd, int operation) { int i; - const int save_errno = errno; Off_t pos; + dSAVE_ERRNO; /* flock locks entire file so for lockf we need to do the same */ pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */ if (pos > 0) /* is seekable and needs to be repositioned */ if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0) pos = -1; /* seek failed, so don't seek back afterwards */ - errno = save_errno; + RESTORE_ERRNO; switch (operation) {