X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/afd1eb533c8ea286efcac6fd054ae7cebaf0dfe3..6fa35b067dd6fd8e20b4b357a4dc01750b05b084:/pp_sys.c diff --git a/pp_sys.c b/pp_sys.c index 29bc12a..f8764c7 100644 --- a/pp_sys.c +++ b/pp_sys.c @@ -1,6 +1,6 @@ /* pp_sys.c * - * Copyright (c) 1991-2001, Larry Wall + * Copyright (c) 1991-2002, Larry Wall * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. @@ -104,11 +104,6 @@ extern int h_errno; # endif #endif -/* Put this after #includes because fork and vfork prototypes may conflict. */ -#ifndef HAS_VFORK -# define vfork fork -#endif - #ifdef HAS_CHSIZE # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */ # undef my_chsize @@ -394,15 +389,6 @@ PP(pp_glob) return result; } -#if 0 /* XXX never used! */ -PP(pp_indread) -{ - STRLEN n_a; - PL_last_in_gv = gv_fetchpv(SvPVx(GvSV((GV*)(*PL_stack_sp--)), n_a), TRUE,SVt_PVIO); - return do_readline(); -} -#endif - PP(pp_rcatline) { PL_last_in_gv = cGVOP_gv; @@ -447,6 +433,9 @@ PP(pp_die) SV *tmpsv; STRLEN len; bool multiarg = 0; +#ifdef VMS + VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH); +#endif if (SP - MARK != 1) { dTARGET; do_join(TARG, &PL_sv_no, MARK, SP); @@ -482,7 +471,7 @@ PP(pp_die) sv_setsv(error,*PL_stack_sp--); } } - DIE(aTHX_ Nullch); + DIE(aTHX_ Nullformat); } else { if (SvPOK(error) && SvCUR(error)) @@ -506,6 +495,7 @@ PP(pp_open) dTARGET; GV *gv; SV *sv; + IO *io; char *tmps; STRLEN len; MAGIC *mg; @@ -514,13 +504,13 @@ PP(pp_open) gv = (GV *)*++MARK; if (!isGV(gv)) DIE(aTHX_ PL_no_usym, "filehandle"); - if (GvIOp(gv)) + if ((io = GvIOp(gv))) IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT; - if ((mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) { + if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { /* Method's args are same as ours ... */ /* ... except handle is replaced by the object */ - *MARK-- = SvTIED_obj((SV*)gv, mg); + *MARK-- = SvTIED_obj((SV*)io, mg); PUSHMARK(MARK); PUTBACK; ENTER; @@ -553,6 +543,7 @@ PP(pp_close) { dSP; GV *gv; + IO *io; MAGIC *mg; if (MAXARG == 0) @@ -560,9 +551,11 @@ PP(pp_close) else gv = (GV*)POPs; - if ((mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) { + if (gv && (io = GvIO(gv)) + && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) + { PUSHMARK(SP); - XPUSHs(SvTIED_obj((SV*)gv, mg)); + XPUSHs(SvTIED_obj((SV*)io, mg)); PUTBACK; ENTER; call_method("CLOSE", G_SCALAR); @@ -642,9 +635,11 @@ PP(pp_fileno) RETPUSHUNDEF; gv = (GV*)POPs; - if (gv && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) { + if (gv && (io = GvIO(gv)) + && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) + { PUSHMARK(SP); - XPUSHs(SvTIED_obj((SV*)gv, mg)); + XPUSHs(SvTIED_obj((SV*)io, mg)); PUTBACK; ENTER; call_method("FILENO", G_SCALAR); @@ -708,9 +703,11 @@ PP(pp_binmode) gv = (GV*)POPs; - if (gv && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) { + if (gv && (io = GvIO(gv)) + && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) + { PUSHMARK(SP); - XPUSHs(SvTIED_obj((SV*)gv, mg)); + XPUSHs(SvTIED_obj((SV*)io, mg)); if (discp) XPUSHs(discp); PUTBACK; @@ -753,6 +750,7 @@ PP(pp_tie) switch(SvTYPE(varsv)) { case SVt_PVHV: methname = "TIEHASH"; + HvEITER((HV *)varsv) = Null(HE *); break; case SVt_PVAV: methname = "TIEARRAY"; @@ -765,6 +763,11 @@ PP(pp_tie) #endif methname = "TIEHANDLE"; how = PERL_MAGIC_tiedscalar; + /* For tied filehandles, we apply tiedscalar magic to the IO + slot of the GP rather than the GV itself. AMS 20010812 */ + if (!GvIOp(varsv)) + GvIOp(varsv) = newIO(); + varsv = (SV *)GvIOp(varsv); break; default: methname = "TIESCALAR"; @@ -823,44 +826,52 @@ PP(pp_tie) PP(pp_untie) { dSP; + MAGIC *mg; SV *sv = POPs; char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar; - MAGIC * mg ; - if ((mg = SvTIED_mg(sv, how))) { + if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv))) + RETPUSHYES; + + if ((mg = SvTIED_mg(sv, how))) { SV *obj = SvRV(mg->mg_obj); GV *gv; CV *cv = NULL; - if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) && - isGV(gv) && (cv = GvCV(gv))) { - PUSHMARK(SP); - XPUSHs(SvTIED_obj((SV*)gv, mg)); - XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1))); - PUTBACK; - ENTER; - call_sv((SV *)cv, G_VOID); - LEAVE; - SPAGAIN; - } - else if (ckWARN(WARN_UNTIE)) { - if (mg && SvREFCNT(obj) > 1) - Perl_warner(aTHX_ WARN_UNTIE, - "untie attempted while %"UVuf" inner references still exist", - (UV)SvREFCNT(obj) - 1 ) ; + if (obj) { + if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) && + isGV(gv) && (cv = GvCV(gv))) { + PUSHMARK(SP); + XPUSHs(SvTIED_obj((SV*)gv, mg)); + XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1))); + PUTBACK; + ENTER; + call_sv((SV *)cv, G_VOID); + LEAVE; + SPAGAIN; + } + else if (ckWARN(WARN_UNTIE)) { + if (mg && SvREFCNT(obj) > 1) + Perl_warner(aTHX_ WARN_UNTIE, + "untie attempted while %"UVuf" inner references still exist", + (UV)SvREFCNT(obj) - 1 ) ; + } } + sv_unmagic(sv, how) ; } - sv_unmagic(sv, how); RETPUSHYES; } PP(pp_tied) { dSP; + MAGIC *mg; SV *sv = POPs; char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar; - MAGIC *mg; + + if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv))) + RETPUSHUNDEF; if ((mg = SvTIED_mg(sv, how))) { SV *osv = SvTIED_obj(sv, mg); @@ -1123,6 +1134,7 @@ PP(pp_getc) { dSP; dTARGET; GV *gv; + IO *io; MAGIC *mg; if (MAXARG == 0) @@ -1130,10 +1142,12 @@ PP(pp_getc) else gv = (GV*)POPs; - if ((mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) { + if (gv && (io = GvIO(gv)) + && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) + { I32 gimme = GIMME_V; PUSHMARK(SP); - XPUSHs(SvTIED_obj((SV*)gv, mg)); + XPUSHs(SvTIED_obj((SV*)io, mg)); PUTBACK; ENTER; call_method("GETC", gimme); @@ -1387,7 +1401,9 @@ PP(pp_prtf) else gv = PL_defoutgv; - if ((mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) { + if (gv && (io = GvIO(gv)) + && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) + { if (MARK == ORIGMARK) { MEXTEND(SP, 1); ++MARK; @@ -1395,7 +1411,7 @@ PP(pp_prtf) ++SP; } PUSHMARK(MARK - 1); - *MARK = SvTIED_obj((SV*)gv, mg); + *MARK = SvTIED_obj((SV*)io, mg); PUTBACK; ENTER; call_method("PRINTF", G_SCALAR); @@ -1503,15 +1519,19 @@ PP(pp_sysread) int fp_utf8; Size_t got = 0; Size_t wanted; + bool charstart = FALSE; + STRLEN charskip = 0; + STRLEN skip = 0; gv = (GV*)*++MARK; - if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD) && - (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) + if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD) + && gv && (io = GvIO(gv)) + && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { SV *sv; PUSHMARK(MARK-1); - *MARK = SvTIED_obj((SV*)gv, mg); + *MARK = SvTIED_obj((SV*)io, mg); ENTER; call_method("READ", G_SCALAR); LEAVE; @@ -1548,6 +1568,10 @@ PP(pp_sysread) DIE(aTHX_ "Negative length"); wanted = length; + charstart = TRUE; + charskip = 0; + skip = 0; + #ifdef HAS_SOCKET if (PL_op->op_type == OP_RECV) { char namebuf[MAXPATHLEN]; @@ -1668,23 +1692,30 @@ PP(pp_sysread) /* Look at utf8 we got back and count the characters */ char *bend = buffer + count; while (buffer < bend) { - STRLEN skip = UTF8SKIP(buffer); - if (buffer+skip > bend) { + if (charstart) { + skip = UTF8SKIP(buffer); + charskip = 0; + } + if (buffer - charskip + skip > bend) { /* partial character - try for rest of it */ length = skip - (bend-buffer); offset = bend - SvPVX(bufsv); + charstart = FALSE; + charskip += count; goto more_bytes; } else { got++; buffer += skip; + charstart = TRUE; + charskip = 0; } } /* If we have not 'got' the number of _characters_ we 'wanted' get some more provided amount read (count) was what was requested (length) */ if (got < wanted && count == length) { - length = (wanted-got); + length = wanted - got; offset = bend - SvPVX(bufsv); goto more_bytes; } @@ -1733,12 +1764,13 @@ PP(pp_send) gv = (GV*)*++MARK; if (PL_op->op_type == OP_SYSWRITE - && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) + && gv && (io = GvIO(gv)) + && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { SV *sv; PUSHMARK(MARK-1); - *MARK = SvTIED_obj((SV*)gv, mg); + *MARK = SvTIED_obj((SV*)io, mg); ENTER; call_method("WRITE", G_SCALAR); LEAVE; @@ -1833,6 +1865,8 @@ PP(pp_send) if (retval < 0) goto say_undef; SP = ORIGMARK; + if (DO_UTF8(bufsv)) + retval = utf8_length((U8*)buffer, (U8*)buffer + retval); #if Size_t_size > IVSIZE PUSHn(retval); #else @@ -1854,6 +1888,7 @@ PP(pp_eof) { dSP; GV *gv; + IO *io; MAGIC *mg; if (MAXARG == 0) { @@ -1879,9 +1914,11 @@ PP(pp_eof) else gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */ - if (gv && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) { + if (gv && (io = GvIO(gv)) + && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) + { PUSHMARK(SP); - XPUSHs(SvTIED_obj((SV*)gv, mg)); + XPUSHs(SvTIED_obj((SV*)io, mg)); PUTBACK; ENTER; call_method("EOF", G_SCALAR); @@ -1898,6 +1935,7 @@ PP(pp_tell) { dSP; dTARGET; GV *gv; + IO *io; MAGIC *mg; if (MAXARG == 0) @@ -1905,9 +1943,11 @@ PP(pp_tell) else gv = PL_last_in_gv = (GV*)POPs; - if (gv && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) { + if (gv && (io = GvIO(gv)) + && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) + { PUSHMARK(SP); - XPUSHs(SvTIED_obj((SV*)gv, mg)); + XPUSHs(SvTIED_obj((SV*)io, mg)); PUTBACK; ENTER; call_method("TELL", G_SCALAR); @@ -1933,6 +1973,7 @@ PP(pp_sysseek) { dSP; GV *gv; + IO *io; int whence = POPi; #if LSEEKSIZE > IVSIZE Off_t offset = (Off_t)SvNVx(POPs); @@ -1943,9 +1984,11 @@ PP(pp_sysseek) gv = PL_last_in_gv = (GV*)POPs; - if (gv && (mg = SvTIED_mg((SV*)gv, PERL_MAGIC_tiedscalar))) { + if (gv && (io = GvIO(gv)) + && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) + { PUSHMARK(SP); - XPUSHs(SvTIED_obj((SV*)gv, mg)); + XPUSHs(SvTIED_obj((SV*)io, mg)); #if LSEEKSIZE > IVSIZE XPUSHs(sv_2mortal(newSVnv((NV) offset))); #else @@ -2025,7 +2068,7 @@ PP(pp_truncate) else { SV *sv = POPs; char *name; - + if (SvTYPE(sv) == SVt_PVGV) { tmpgv = (GV*)sv; /* *main::FRED for example */ goto do_ftruncate; @@ -2128,7 +2171,7 @@ PP(pp_ioctl) if (SvPOK(argsv)) { if (s[SvCUR(argsv)] != 17) DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument", - PL_op_name[optype]); + OP_NAME(PL_op)); s[SvCUR(argsv)] = 0; /* put our null back */ SvSETMAGIC(argsv); /* Assume it has changed */ } @@ -2239,7 +2282,7 @@ PP(pp_socket) PP(pp_sockpair) { -#ifdef HAS_SOCKETPAIR +#if defined (HAS_SOCKETPAIR) || defined (HAS_SOCKET) dSP; GV *gv1; GV *gv2; @@ -2428,6 +2471,7 @@ PP(pp_accept) struct sockaddr saddr; /* use a struct to avoid alignment problems */ Sock_size_t len = sizeof saddr; int fd; + int fd2; ggv = (GV*)POPs; ngv = (GV*)POPs; @@ -2442,14 +2486,17 @@ PP(pp_accept) goto nuts; nstio = GvIOn(ngv); - if (IoIFP(nstio)) - do_close(ngv, FALSE); - fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *)&saddr, &len); if (fd < 0) goto badexit; + if (IoIFP(nstio)) + do_close(ngv, FALSE); IoIFP(nstio) = PerlIO_fdopen(fd, "r"); - IoOFP(nstio) = PerlIO_fdopen(fd, "w"); + /* FIXME: we dup(fd) here so that refcounting of fd's does not inhibit + fclose of IoOFP's FILE * - and hence leak memory. + Special treatment of _this_ case of IoIFP != IoOFP seems wrong. + */ + IoOFP(nstio) = PerlIO_fdopen(fd2 = PerlLIO_dup(fd), "w"); IoTYPE(nstio) = IoTYPE_SOCKET; if (!IoIFP(nstio) || !IoOFP(nstio)) { if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio)); @@ -2459,6 +2506,7 @@ PP(pp_accept) } #if defined(HAS_FCNTL) && defined(F_SETFD) fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */ + fcntl(fd2, F_SETFD, fd2 > PL_maxsysfd); /* ensure close-on-exec */ #endif #ifdef EPOC @@ -3353,27 +3401,30 @@ PP(pp_chdir) SV **svp; STRLEN n_a; - if (MAXARG < 1) - tmps = Nullch; + if( MAXARG == 1 ) + tmps = POPpx; else - tmps = POPpx; - if (!tmps || !*tmps) { - svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE); - if (svp) - tmps = SvPV(*svp, n_a); - } - if (!tmps || !*tmps) { - svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE); - if (svp) - tmps = SvPV(*svp, n_a); - } + tmps = 0; + + if( !tmps || !*tmps ) { + if ( (svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE)) + || (svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE)) #ifdef VMS - if (!tmps || !*tmps) { - svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE); - if (svp) - tmps = SvPV(*svp, n_a); - } + || (svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE)) #endif + ) + { + if( MAXARG == 1 ) + deprecate("chdir('') or chdir(undef) as chdir()"); + tmps = SvPV(*svp, n_a); + } + else { + PUSHi(0); + TAINT_PROPER("chdir"); + RETURN; + } + } + TAINT_PROPER("chdir"); PUSHi( PerlDir_chdir(tmps) >= 0 ); #ifdef VMS @@ -3471,9 +3522,8 @@ PP(pp_rename) PP(pp_link) { - dSP; #ifdef HAS_LINK - dTARGET; + dSP; dTARGET; STRLEN n_a; char *tmps2 = POPpx; char *tmps = SvPV(TOPs, n_a); @@ -3876,13 +3926,16 @@ PP(pp_fork) EXTEND(SP, 1); PERL_FLUSHALL_FOR_CHILD; - childpid = fork(); + childpid = PerlProc_fork(); if (childpid < 0) RETSETUNDEF; if (!childpid) { /*SUPPRESS 560*/ - if ((tmpgv = gv_fetchpv("$", TRUE, SVt_PV))) + if ((tmpgv = gv_fetchpv("$", TRUE, SVt_PV))) { + SvREADONLY_off(GvSV(tmpgv)); sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid()); + SvREADONLY_on(GvSV(tmpgv)); + } hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */ } PUSHi(childpid); @@ -3984,10 +4037,20 @@ PP(pp_system) Pid_t childpid; int status; Sigsave_t ihand,qhand; /* place to save signals during system() */ - + + if (PL_tainting) { + SV *cmd = NULL; + if (PL_op->op_flags & OPf_STACKED) + cmd = *(MARK + 1); + else if (SP - MARK != 1) + cmd = *SP; + if (cmd && *(SvPV_nolen(cmd)) != '/') + TAINT_ENV(); + } + if (PerlProc_pipe(pp) >= 0) did_pipes = 1; - while ((childpid = vfork()) == -1) { + while ((childpid = PerlProc_fork()) == -1) { if (errno != EAGAIN) { value = -1; SP = ORIGMARK; @@ -4015,12 +4078,12 @@ PP(pp_system) (void)rsignal_restore(SIGQUIT, &qhand); #endif STATUS_NATIVE_SET(result == -1 ? -1 : status); - do_execfree(); /* free any memory child malloced on vfork */ + do_execfree(); /* free any memory child malloced on fork */ SP = ORIGMARK; if (did_pipes) { int errkid; int n = 0, n1; - + while (n < sizeof(int)) { n1 = PerlLIO_read(pp[0], (void*)(((char*)&errkid)+n), @@ -4121,11 +4184,6 @@ PP(pp_exec) #endif } -#if !defined(HAS_FORK) && defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS) - if (value >= 0) - my_exit(value); -#endif - SP = ORIGMARK; PUSHi(value); RETURN; @@ -4262,6 +4320,10 @@ PP(pp_time) it's supported. --AD 9/96. */ +#ifdef __BEOS__ +# define HZ 1000000 +#endif + #ifndef HZ # ifdef CLK_TCK # define HZ CLK_TCK @@ -4323,10 +4385,10 @@ PP(pp_gmtime) else tmbuf = gmtime(&when); - EXTEND(SP, 9); - EXTEND_MORTAL(9); if (GIMME != G_ARRAY) { SV *tsv; + EXTEND(SP, 1); + EXTEND_MORTAL(1); if (!tmbuf) RETPUSHUNDEF; tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d", @@ -4340,7 +4402,9 @@ PP(pp_gmtime) PUSHs(sv_2mortal(tsv)); } else if (tmbuf) { - PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec))); + EXTEND(SP, 9); + EXTEND_MORTAL(9); + PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec))); PUSHs(sv_2mortal(newSViv(tmbuf->tm_min))); PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour))); PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));