3 * Copyright (c) 1991-2002, 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 * "Far below them they saw the white waters pour into a foaming bowl, and
12 * then swirl darkly about a deep oval basin in the rocks, until they found
13 * their way out again through a narrow gate, and flowed away, fuming and
14 * chattering, into calmer and more level reaches."
18 #define PERL_IN_DOIO_C
21 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
30 # ifndef HAS_SHMAT_PROTOTYPE
31 extern Shmat_t shmat (int, char *, int);
37 # if defined(_MSC_VER) || defined(__MINGW32__)
38 # include <sys/utime.h>
45 # define OPEN_EXCL O_EXCL
50 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
55 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
56 int rawmode, int rawperm, PerlIO *supplied_fp)
58 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
59 supplied_fp, (SV **) NULL, 0);
63 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
64 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
67 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
68 supplied_fp, &svs, 1);
72 Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
73 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
76 register IO *io = GvIOn(gv);
77 PerlIO *saveifp = Nullfp;
78 PerlIO *saveofp = Nullfp;
80 char savetype = IoTYPE_CLOSED;
85 bool was_fdopen = FALSE;
86 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
88 char mode[8]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
91 Zero(mode,sizeof(mode),char);
92 PL_forkprocess = 1; /* assume true if no fork */
94 /* Collect default raw/crlf info from the op */
95 if (PL_op && PL_op->op_type == OP_OPEN) {
96 /* set up disciplines */
97 U8 flags = PL_op->op_private;
98 in_raw = (flags & OPpOPEN_IN_RAW);
99 in_crlf = (flags & OPpOPEN_IN_CRLF);
100 out_raw = (flags & OPpOPEN_OUT_RAW);
101 out_crlf = (flags & OPpOPEN_OUT_CRLF);
104 /* If currently open - close before we re-open */
106 fd = PerlIO_fileno(IoIFP(io));
107 if (IoTYPE(io) == IoTYPE_STD) {
108 /* This is a clone of one of STD* handles */
111 else if (fd >= 0 && fd <= PL_maxsysfd) {
112 /* This is one of the original STD* handles */
115 savetype = IoTYPE(io);
119 else if (IoTYPE(io) == IoTYPE_PIPE)
120 result = PerlProc_pclose(IoIFP(io));
121 else if (IoIFP(io) != IoOFP(io)) {
123 result = PerlIO_close(IoOFP(io));
124 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
127 result = PerlIO_close(IoIFP(io));
130 result = PerlIO_close(IoIFP(io));
131 if (result == EOF && fd > PL_maxsysfd) {
132 /* Why is this not Perl_warn*() call ? */
133 PerlIO_printf(Perl_error_log,
134 "Warning: unable to close filehandle %s properly.\n",
137 IoOFP(io) = IoIFP(io) = Nullfp;
141 /* sysopen style args, i.e. integer mode and permissions */
145 #ifdef O_APPEND /* Not fully portable. */
148 #ifdef O_TRUNC /* Not fully portable. */
153 O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
157 Perl_croak(aTHX_ "panic: sysopen with multiple args");
165 It might be (in OS/390 and Mac OS Classic it is)
171 This means that simple & with O_RDWR would look
172 like O_RDONLY is present. Therefore we have to
175 if ((ismodifying = (rawmode & modifyingmode))) {
176 if ((ismodifying & O_WRONLY) == O_WRONLY ||
177 (ismodifying & O_RDWR) == O_RDWR ||
178 (ismodifying & (O_CREAT|appendtrunc)))
179 TAINT_PROPER("sysopen");
181 mode[ix++] = '#'; /* Marker to openn to use numeric "sysopen" */
183 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
184 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
187 IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
189 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
193 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
196 /* Regular (non-sys) open */
201 PerlIO *that_fp = NULL;
203 type = savepvn(name, len);
207 /* Lose leading and trailing white space */
209 for (; isSPACE(*type); type++) ;
210 while (tend > type && isSPACE(tend[-1]))
214 /* New style explict name, type is just mode and discipline/layer info */
217 if (SvROK(*svp) && !strchr(name,'&')) {
219 Perl_warner(aTHX_ packWARN(WARN_IO),
220 "Can't open a reference");
221 SETERRNO(EINVAL, LIB$_INVARG);
224 #endif /* USE_STDIO */
225 name = SvOK(*svp) ? SvPV(*svp, l) : "";
227 name = savepvn(name, len);
235 if ((*type == IoTYPE_RDWR) && /* scary */
236 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
237 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
238 TAINT_PROPER("open");
243 if (*type == IoTYPE_PIPE) {
245 if (type[1] != IoTYPE_STD) {
247 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
252 for (type++; isSPACE(*type); type++) ;
258 /* command is missing 19990114 */
259 if (ckWARN(WARN_PIPE))
260 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
264 if (strNE(name,"-") || num_svs)
266 TAINT_PROPER("piped open");
267 if (!num_svs && name[len-1] == '|') {
269 if (ckWARN(WARN_PIPE))
270 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
279 fp = PerlProc_popen_list(mode, num_svs, svp);
282 fp = PerlProc_popen(name,mode);
285 else if (*type == IoTYPE_WRONLY) {
286 TAINT_PROPER("open");
288 if (*type == IoTYPE_WRONLY) {
289 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
290 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
305 dodup = PERLIO_DUP_FD;
311 if (!num_svs && !*type && supplied_fp) {
312 /* "<+&" etc. is used by typemaps */
317 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
319 if (num_svs && SvIOK(*svp)) {
322 else if (isDIGIT(*type)) {
324 for (; isSPACE(*type); type++) ;
330 thatio = sv_2io(*svp);
335 for (; isSPACE(*type); type++) ;
336 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
337 thatio = GvIO(thatgv);
341 SETERRNO(EINVAL,SS$_IVCHAN);
345 if ((that_fp = IoIFP(thatio))) {
346 /* Flush stdio buffer before dup. --mjd
347 * Unfortunately SEEK_CURing 0 seems to
348 * be optimized away on most platforms;
349 * only Solaris and Linux seem to flush
352 /* sfio fails to clear error on next
353 sfwrite, contrary to documentation.
355 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
356 PerlIO_clearerr(that_fp);
358 /* On the other hand, do all platforms
359 * take gracefully to flushing a read-only
360 * filehandle? Perhaps we should do
361 * fsetpos(src)+fgetpos(dst)? --nik */
362 PerlIO_flush(that_fp);
363 fd = PerlIO_fileno(that_fp);
364 /* When dup()ing STDIN, STDOUT or STDERR
365 * explicitly set appropriate access mode */
366 if (that_fp == PerlIO_stdout()
367 || that_fp == PerlIO_stderr())
368 IoTYPE(io) = IoTYPE_WRONLY;
369 else if (that_fp == PerlIO_stdin())
370 IoTYPE(io) = IoTYPE_RDONLY;
371 /* When dup()ing a socket, say result is
373 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
374 IoTYPE(io) = IoTYPE_SOCKET;
382 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
386 fd = PerlLIO_dup(fd);
389 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
398 for (; isSPACE(*type); type++) ;
399 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
402 fp = PerlIO_stdout();
403 IoTYPE(io) = IoTYPE_STD;
405 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
410 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
415 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
419 else if (*type == IoTYPE_RDONLY) {
421 for (type++; isSPACE(*type); type++) ;
431 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
435 IoTYPE(io) = IoTYPE_STD;
437 Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
442 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
447 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
450 else if ((num_svs && type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
451 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
453 type += 2; /* skip over '-|' */
457 while (tend > type && isSPACE(tend[-1]))
460 for (; isSPACE(*type); type++) ;
465 /* command is missing 19990114 */
466 if (ckWARN(WARN_PIPE))
467 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
471 if (strNE(name,"-") || num_svs)
473 TAINT_PROPER("piped open");
480 fp = PerlProc_popen_list(mode,num_svs,svp);
483 fp = PerlProc_popen(name,mode);
485 IoTYPE(io) = IoTYPE_PIPE;
491 IoTYPE(io) = IoTYPE_RDONLY;
493 for (; isSPACE(*name); name++) ;
499 if (strEQ(name,"-")) {
501 IoTYPE(io) = IoTYPE_STD;
505 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
510 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
515 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
516 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
520 if (ckWARN(WARN_IO)) {
521 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
522 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
523 Perl_warner(aTHX_ packWARN(WARN_IO),
524 "Filehandle STD%s opened only for input",
525 (fp == PerlIO_stdout()) ? "OUT" : "ERR");
527 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
528 Perl_warner(aTHX_ packWARN(WARN_IO),
529 "Filehandle STDIN opened only for output");
533 fd = PerlIO_fileno(fp);
534 /* If there is no fd (e.g. PerlIO::Scalar) assume it isn't a
535 * socket - this covers PerlIO::Scalar - otherwise unless we "know" the
536 * type probe for socket-ness.
538 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
539 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
540 /* If PerlIO claims to have fd we had better be able to fstat() it. */
541 (void) PerlIO_close(fp);
545 if (S_ISSOCK(PL_statbuf.st_mode))
546 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
550 !(PL_statbuf.st_mode & S_IFMT)
554 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
555 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
556 ) { /* on OS's that return 0 on fstat()ed pipe */
558 Sock_size_t buflen = sizeof tmpbuf;
559 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
560 || errno != ENOTSOCK)
561 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
562 /* but some return 0 for streams too, sigh */
564 #endif /* HAS_SOCKET */
565 #endif /* !PERL_MICRO */
569 * If this is a standard handle we discard all the layer stuff
570 * and just dup the fd into whatever was on the handle before !
573 if (saveifp) { /* must use old fp? */
574 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
575 then dup the new fileno down
578 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
579 if (saveofp != saveifp) { /* was a socket? */
580 PerlIO_close(saveofp);
584 /* Still a small can-of-worms here if (say) PerlIO::Scalar
585 is assigned to (say) STDOUT - for now let dup2() fail
586 and provide the error
588 if (PerlLIO_dup2(fd, savefd) < 0) {
589 (void)PerlIO_close(fp);
593 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
594 char newname[FILENAME_MAX+1];
595 if (PerlIO_getname(fp, newname)) {
596 if (fd == PerlIO_fileno(PerlIO_stdout()))
597 Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
598 if (fd == PerlIO_fileno(PerlIO_stderr()))
599 Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
605 /* PL_fdpid isn't used on Windows, so avoid this useless work.
606 * XXX Probably the same for a lot of other places. */
612 sv = *av_fetch(PL_fdpid,fd,TRUE);
613 (void)SvUPGRADE(sv, SVt_IV);
616 sv = *av_fetch(PL_fdpid,savefd,TRUE);
617 (void)SvUPGRADE(sv, SVt_IV);
624 /* need to close fp without closing underlying fd */
625 int ofd = PerlIO_fileno(fp);
626 int dupfd = PerlLIO_dup(ofd);
628 PerlLIO_dup2(dupfd,ofd);
629 PerlLIO_close(dupfd);
636 fd = PerlIO_fileno(fp);
638 #if defined(HAS_FCNTL) && defined(F_SETFD)
640 int save_errno = errno;
641 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
647 IoFLAGS(io) &= ~IOf_NOLINE;
649 if (IoTYPE(io) == IoTYPE_SOCKET
650 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
652 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,0,svp))) {
666 IoTYPE(io) = savetype;
671 Perl_nextargv(pTHX_ register GV *gv)
674 #ifndef FLEXFILENAMES
683 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
684 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
685 IoFLAGS(io) &= ~IOf_START;
687 if (!PL_argvout_stack)
688 PL_argvout_stack = newAV();
689 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
692 if (PL_filemode & (S_ISUID|S_ISGID)) {
693 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
695 (void)fchmod(PL_lastfd,PL_filemode);
697 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
701 while (av_len(GvAV(gv)) >= 0) {
703 sv = av_shift(GvAV(gv));
705 sv_setsv(GvSV(gv),sv);
706 SvSETMAGIC(GvSV(gv));
707 PL_oldname = SvPVx(GvSV(gv), oldlen);
708 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
710 TAINT_PROPER("inplace open");
711 if (oldlen == 1 && *PL_oldname == '-') {
712 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
713 return IoIFP(GvIOp(gv));
715 #ifndef FLEXFILENAMES
716 filedev = PL_statbuf.st_dev;
717 fileino = PL_statbuf.st_ino;
719 PL_filemode = PL_statbuf.st_mode;
720 fileuid = PL_statbuf.st_uid;
721 filegid = PL_statbuf.st_gid;
722 if (!S_ISREG(PL_filemode)) {
723 if (ckWARN_d(WARN_INPLACE))
724 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
725 "Can't do inplace edit: %s is not a regular file",
731 char *star = strchr(PL_inplace, '*');
733 char *begin = PL_inplace;
734 sv_setpvn(sv, "", 0);
736 sv_catpvn(sv, begin, star - begin);
737 sv_catpvn(sv, PL_oldname, oldlen);
739 } while ((star = strchr(begin, '*')));
744 sv_catpv(sv,PL_inplace);
746 #ifndef FLEXFILENAMES
747 if ((PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
748 && PL_statbuf.st_dev == filedev
749 && PL_statbuf.st_ino == fileino)
751 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
755 if (ckWARN_d(WARN_INPLACE))
756 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
757 "Can't do inplace edit: %s would not be unique",
764 #if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
765 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
766 if (ckWARN_d(WARN_INPLACE))
767 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
768 "Can't rename %s to %s: %s, skipping file",
769 PL_oldname, SvPVX(sv), Strerror(errno) );
775 (void)PerlLIO_unlink(SvPVX(sv));
776 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
777 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
780 (void)UNLINK(SvPVX(sv));
781 if (link(PL_oldname,SvPVX(sv)) < 0) {
782 if (ckWARN_d(WARN_INPLACE))
783 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
784 "Can't rename %s to %s: %s, skipping file",
785 PL_oldname, SvPVX(sv), Strerror(errno) );
789 (void)UNLINK(PL_oldname);
793 #if !defined(DOSISH) && !defined(AMIGAOS) && !defined(__CYGWIN__)
794 # ifndef VMS /* Don't delete; use automatic file versioning */
795 if (UNLINK(PL_oldname) < 0) {
796 if (ckWARN_d(WARN_INPLACE))
797 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
798 "Can't remove %s: %s, skipping file",
799 PL_oldname, Strerror(errno) );
805 Perl_croak(aTHX_ "Can't do inplace edit without backup");
809 sv_setpvn(sv,">",!PL_inplace);
810 sv_catpvn(sv,PL_oldname,oldlen);
811 SETERRNO(0,0); /* in case sprintf set errno */
813 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
814 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
816 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
817 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
820 if (ckWARN_d(WARN_INPLACE))
821 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
822 PL_oldname, Strerror(errno) );
826 setdefout(PL_argvoutgv);
827 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
828 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
830 (void)fchmod(PL_lastfd,PL_filemode);
832 # if !(defined(WIN32) && defined(__BORLANDC__))
833 /* Borland runtime creates a readonly file! */
834 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
837 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
839 (void)fchown(PL_lastfd,fileuid,filegid);
842 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
847 return IoIFP(GvIOp(gv));
850 if (ckWARN_d(WARN_INPLACE)) {
852 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
853 && !S_ISREG(PL_statbuf.st_mode))
855 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
856 "Can't do inplace edit: %s is not a regular file",
860 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
861 PL_oldname, Strerror(eno));
865 if (io && (IoFLAGS(io) & IOf_ARGV))
866 IoFLAGS(io) |= IOf_START;
868 (void)do_close(PL_argvoutgv,FALSE);
869 if (io && (IoFLAGS(io) & IOf_ARGV)
870 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
872 GV *oldout = (GV*)av_pop(PL_argvout_stack);
874 SvREFCNT_dec(oldout);
877 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
884 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
903 if (PerlProc_pipe(fd) < 0)
905 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
906 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
907 IoOFP(rstio) = IoIFP(rstio);
908 IoIFP(wstio) = IoOFP(wstio);
909 IoTYPE(rstio) = IoTYPE_RDONLY;
910 IoTYPE(wstio) = IoTYPE_WRONLY;
911 if (!IoIFP(rstio) || !IoOFP(wstio)) {
912 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
913 else PerlLIO_close(fd[0]);
914 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
915 else PerlLIO_close(fd[1]);
919 sv_setsv(sv,&PL_sv_yes);
923 sv_setsv(sv,&PL_sv_undef);
928 /* explicit renamed to avoid C++ conflict -- kja */
930 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
937 if (!gv || SvTYPE(gv) != SVt_PVGV) {
939 SETERRNO(EBADF,SS$_IVCHAN);
943 if (!io) { /* never opened */
945 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
946 report_evil_fh(gv, io, PL_op->op_type);
947 SETERRNO(EBADF,SS$_IVCHAN);
951 retval = io_close(io, not_implicit);
955 IoLINES_LEFT(io) = IoPAGE_LEN(io);
957 IoTYPE(io) = IoTYPE_CLOSED;
962 Perl_io_close(pTHX_ IO *io, bool not_implicit)
968 if (IoTYPE(io) == IoTYPE_PIPE) {
969 status = PerlProc_pclose(IoIFP(io));
971 STATUS_NATIVE_SET(status);
972 retval = (STATUS_POSIX == 0);
975 retval = (status != -1);
978 else if (IoTYPE(io) == IoTYPE_STD)
981 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
982 retval = (PerlIO_close(IoOFP(io)) != EOF);
983 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
986 retval = (PerlIO_close(IoIFP(io)) != EOF);
988 IoOFP(io) = IoIFP(io) = Nullfp;
990 else if (not_implicit) {
991 SETERRNO(EBADF,SS$_IVCHAN);
998 Perl_do_eof(pTHX_ GV *gv)
1007 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
1008 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1012 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
1013 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
1014 return FALSE; /* this is the most usual case */
1017 ch = PerlIO_getc(IoIFP(io));
1019 (void)PerlIO_ungetc(IoIFP(io),ch);
1023 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
1024 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1025 PerlIO_set_cnt(IoIFP(io),-1);
1027 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
1028 if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
1032 return TRUE; /* normal fp, definitely end of file */
1038 Perl_do_tell(pTHX_ GV *gv)
1040 register IO *io = 0;
1041 register PerlIO *fp;
1043 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1044 #ifdef ULTRIX_STDIO_BOTCH
1046 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1048 return PerlIO_tell(fp);
1050 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1051 report_evil_fh(gv, io, PL_op->op_type);
1052 SETERRNO(EBADF,RMS$_IFI);
1057 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1059 register IO *io = 0;
1060 register PerlIO *fp;
1062 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1063 #ifdef ULTRIX_STDIO_BOTCH
1065 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1067 return PerlIO_seek(fp, pos, whence) >= 0;
1069 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1070 report_evil_fh(gv, io, PL_op->op_type);
1071 SETERRNO(EBADF,RMS$_IFI);
1076 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1078 register IO *io = 0;
1079 register PerlIO *fp;
1081 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1082 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1083 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1084 report_evil_fh(gv, io, PL_op->op_type);
1085 SETERRNO(EBADF,RMS$_IFI);
1090 Perl_mode_from_discipline(pTHX_ SV *discp)
1092 int mode = O_BINARY;
1095 char *s = SvPV(discp,len);
1100 if (len > 3 && strnEQ(s+1, "raw", 3)
1101 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1110 if (len > 4 && strnEQ(s+1, "crlf", 4)
1111 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1120 goto fail_discipline;
1123 else if (isSPACE(*s)) {
1130 end = strchr(s+1, ':');
1133 #ifndef PERLIO_LAYERS
1134 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1145 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1147 /* The old body of this is now in non-LAYER part of perlio.c
1148 * This is a stub for any XS code which might have been calling it.
1150 char *name = ":raw";
1151 #ifdef PERLIO_USING_CRLF
1152 if (!(mode & O_BINARY))
1155 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1158 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1159 /* code courtesy of William Kucharski */
1162 I32 my_chsize(fd, length)
1163 I32 fd; /* file descriptor */
1164 Off_t length; /* length to set file to */
1169 if (PerlLIO_fstat(fd, &filebuf) < 0)
1172 if (filebuf.st_size < length) {
1174 /* extend file length */
1176 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1179 /* write a "0" byte */
1181 if ((PerlLIO_write(fd, "", 1)) != 1)
1185 /* truncate length */
1189 fl.l_start = length;
1190 fl.l_type = F_WRLCK; /* write lock on file space */
1193 * This relies on the UNDOCUMENTED F_FREESP argument to
1194 * fcntl(2), which truncates the file so that it ends at the
1195 * position indicated by fl.l_start.
1197 * Will minor miracles never cease?
1200 if (fcntl(fd, F_FREESP, &fl) < 0)
1207 #endif /* F_FREESP */
1210 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1212 register char *tmps;
1215 /* assuming fp is checked earlier */
1221 if (SvIOK(sv) && SvIVX(sv) != 0) {
1222 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1223 return !PerlIO_error(fp);
1225 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1226 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1227 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1228 return !PerlIO_error(fp);
1231 switch (SvTYPE(sv)) {
1233 if (ckWARN(WARN_UNINITIALIZED))
1241 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1243 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1244 return !PerlIO_error(fp);
1248 if (PerlIO_isutf8(fp)) {
1250 sv_utf8_upgrade(sv = sv_mortalcopy(sv));
1252 else if (DO_UTF8(sv)) {
1253 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
1254 && ckWARN_d(WARN_UTF8))
1256 Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
1259 tmps = SvPV(sv, len);
1262 /* To detect whether the process is about to overstep its
1263 * filesize limit we would need getrlimit(). We could then
1264 * also transparently raise the limit with setrlimit() --
1265 * but only until the system hard limit/the filesystem limit,
1266 * at which we would get EPERM. Note that when using buffered
1267 * io the write failure can be delayed until the flush/close. --jhi */
1268 if (len && (PerlIO_write(fp,tmps,len) == 0))
1270 return !PerlIO_error(fp);
1280 if (PL_op->op_flags & OPf_REF) {
1285 if (io && IoIFP(io)) {
1287 sv_setpv(PL_statname,"");
1288 PL_laststype = OP_STAT;
1289 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1293 return PL_laststatval;
1294 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1295 report_evil_fh(gv, io, PL_op->op_type);
1297 sv_setpv(PL_statname,"");
1298 return (PL_laststatval = -1);
1306 if (SvTYPE(sv) == SVt_PVGV) {
1310 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1317 sv_setpv(PL_statname, s);
1318 PL_laststype = OP_STAT;
1319 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1320 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1321 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
1322 return PL_laststatval;
1332 if (PL_op->op_flags & OPf_REF) {
1334 if (cGVOP_gv == PL_defgv) {
1335 if (PL_laststype != OP_LSTAT)
1336 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1337 return PL_laststatval;
1339 if (ckWARN(WARN_IO)) {
1340 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1342 return (PL_laststatval = -1);
1346 PL_laststype = OP_LSTAT;
1350 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
1351 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1352 GvENAME((GV*) SvRV(sv)));
1353 return (PL_laststatval = -1);
1355 sv_setpv(PL_statname,SvPV(sv, n_a));
1356 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1357 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1358 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
1359 return PL_laststatval;
1363 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1365 return do_aexec5(really, mark, sp, 0, 0);
1369 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1370 int fd, int do_report)
1372 #ifdef MACOS_TRADITIONAL
1373 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1376 char *tmps = Nullch;
1380 New(401,PL_Argv, sp - mark + 1, char*);
1382 while (++mark <= sp) {
1384 *a++ = SvPVx(*mark, n_a);
1390 tmps = SvPV(really, n_a);
1391 if ((!really && *PL_Argv[0] != '/') ||
1392 (really && *tmps != '/')) /* will execvp use PATH? */
1393 TAINT_ENV(); /* testing IFS here is overkill, probably */
1394 if (really && *tmps)
1395 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1397 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1398 if (ckWARN(WARN_EXEC))
1399 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1400 (really ? tmps : PL_Argv[0]), Strerror(errno));
1404 PerlLIO_write(fd, (void*)&e, sizeof(int));
1414 Perl_do_execfree(pTHX)
1418 PL_Argv = Null(char **);
1426 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1429 Perl_do_exec(pTHX_ char *cmd)
1431 return do_exec3(cmd,0,0);
1435 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1440 while (*cmd && isSPACE(*cmd))
1443 /* save an extra exec if possible */
1448 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1449 strnEQ(cmd+PL_cshlen," -c",3)) {
1451 s = cmd+PL_cshlen+3;
1465 if (s[-1] == '\'') {
1467 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1476 /* see if there are shell metacharacters in it */
1478 if (*cmd == '.' && isSPACE(cmd[1]))
1481 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1484 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1488 for (s = cmd; *s; s++) {
1489 if (*s != ' ' && !isALPHA(*s) &&
1490 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1491 if (*s == '\n' && !s[1]) {
1495 /* handle the 2>&1 construct at the end */
1496 if (*s == '>' && s[1] == '&' && s[2] == '1'
1497 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1498 && (!s[3] || isSPACE(s[3])))
1502 while (*t && isSPACE(*t))
1504 if (!*t && (dup2(1,2) != -1)) {
1510 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1515 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1516 PL_Cmd = savepvn(cmd, s-cmd);
1518 for (s = PL_Cmd; *s;) {
1519 while (*s && isSPACE(*s)) s++;
1522 while (*s && !isSPACE(*s)) s++;
1528 PerlProc_execvp(PL_Argv[0],PL_Argv);
1529 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1536 if (ckWARN(WARN_EXEC))
1537 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1538 PL_Argv[0], Strerror(errno));
1540 PerlLIO_write(fd, (void*)&e, sizeof(int));
1549 #endif /* OS2 || WIN32 */
1552 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1556 register I32 tot = 0;
1559 SV **oldmark = mark;
1562 #define APPLY_TAINT_PROPER() \
1564 if (PL_tainted) { TAINT_PROPER(what); } \
1567 /* This is a first heuristic; it doesn't catch tainting magic. */
1569 while (++mark <= sp) {
1570 if (SvTAINTED(*mark)) {
1580 APPLY_TAINT_PROPER();
1583 APPLY_TAINT_PROPER();
1585 while (++mark <= sp) {
1586 char *name = SvPVx(*mark, n_a);
1587 APPLY_TAINT_PROPER();
1588 if (PerlLIO_chmod(name, val))
1596 APPLY_TAINT_PROPER();
1597 if (sp - mark > 2) {
1598 val = SvIVx(*++mark);
1599 val2 = SvIVx(*++mark);
1600 APPLY_TAINT_PROPER();
1602 while (++mark <= sp) {
1603 char *name = SvPVx(*mark, n_a);
1604 APPLY_TAINT_PROPER();
1605 if (PerlLIO_chown(name, val, val2))
1612 XXX Should we make lchown() directly available from perl?
1613 For now, we'll let Configure test for HAS_LCHOWN, but do
1614 nothing in the core.
1620 APPLY_TAINT_PROPER();
1623 s = SvPVx(*++mark, n_a);
1625 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1627 if (!(val = whichsig(s)))
1628 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1632 APPLY_TAINT_PROPER();
1635 /* kill() doesn't do process groups (job trees?) under VMS */
1636 if (val < 0) val = -val;
1637 if (val == SIGKILL) {
1638 # include <starlet.h>
1639 /* Use native sys$delprc() to insure that target process is
1640 * deleted; supervisor-mode images don't pay attention to
1641 * CRTL's emulation of Unix-style signals and kill()
1643 while (++mark <= sp) {
1644 I32 proc = SvIVx(*mark);
1645 register unsigned long int __vmssts;
1646 APPLY_TAINT_PROPER();
1647 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1651 case SS$_NOSUCHNODE:
1652 SETERRNO(ESRCH,__vmssts);
1655 SETERRNO(EPERM,__vmssts);
1658 SETERRNO(EVMSERR,__vmssts);
1667 while (++mark <= sp) {
1668 I32 proc = SvIVx(*mark);
1669 APPLY_TAINT_PROPER();
1671 if (PerlProc_killpg(proc,val)) /* BSD */
1673 if (PerlProc_kill(-proc,val)) /* SYSV */
1679 while (++mark <= sp) {
1680 I32 proc = SvIVx(*mark);
1681 APPLY_TAINT_PROPER();
1682 if (PerlProc_kill(proc, val))
1690 APPLY_TAINT_PROPER();
1692 while (++mark <= sp) {
1693 s = SvPVx(*mark, n_a);
1694 APPLY_TAINT_PROPER();
1695 if (PL_euid || PL_unsafe) {
1699 else { /* don't let root wipe out directories without -U */
1700 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1712 APPLY_TAINT_PROPER();
1713 if (sp - mark > 2) {
1714 #if defined(I_UTIME) || defined(VMS)
1715 struct utimbuf utbuf;
1723 SV* accessed = *++mark;
1724 SV* modified = *++mark;
1725 void * utbufp = &utbuf;
1727 /* be like C, and if both times are undefined, let the C
1728 library figure out what to do. This usually means
1731 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1734 Zero(&utbuf, sizeof utbuf, char);
1736 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1737 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1739 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1740 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1742 APPLY_TAINT_PROPER();
1744 while (++mark <= sp) {
1745 char *name = SvPVx(*mark, n_a);
1746 APPLY_TAINT_PROPER();
1747 if (PerlLIO_utime(name, utbufp))
1758 #undef APPLY_TAINT_PROPER
1761 /* Do the permissions allow some operation? Assumes statcache already set. */
1762 #ifndef VMS /* VMS' cando is in vms.c */
1764 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1765 /* Note: we use `effective' both for uids and gids.
1766 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1769 /* [Comments and code from Len Reed]
1770 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1771 * to write-protected files. The execute permission bit is set
1772 * by the Miscrosoft C library stat() function for the following:
1777 * All files and directories are readable.
1778 * Directories and special files, e.g. "CON", cannot be
1780 * [Comment by Tom Dinger -- a directory can have the write-protect
1781 * bit set in the file system, but DOS permits changes to
1782 * the directory anyway. In addition, all bets are off
1783 * here for networked software, such as Novell and
1787 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1788 * too so it will actually look into the files for magic numbers
1790 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1792 #else /* ! DOSISH */
1793 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1794 if (mode == S_IXUSR) {
1795 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1799 return TRUE; /* root reads and writes anything */
1802 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1803 if (statbufp->st_mode & mode)
1804 return TRUE; /* ok as "user" */
1806 else if (ingroup(statbufp->st_gid,effective)) {
1807 if (statbufp->st_mode & mode >> 3)
1808 return TRUE; /* ok as "group" */
1810 else if (statbufp->st_mode & mode >> 6)
1811 return TRUE; /* ok as "other" */
1813 #endif /* ! DOSISH */
1818 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1820 #ifdef MACOS_TRADITIONAL
1821 /* This is simply not correct for AppleShare, but fix it yerself. */
1824 if (testgid == (effective ? PL_egid : PL_gid))
1826 #ifdef HAS_GETGROUPS
1831 Groups_t gary[NGROUPS];
1834 anum = getgroups(NGROUPS,gary);
1836 if (gary[anum] == testgid)
1844 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1847 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1852 key = (key_t)SvNVx(*++mark);
1853 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1854 flags = SvIVx(*++mark);
1860 return msgget(key, flags);
1864 return semget(key, n, flags);
1868 return shmget(key, n, flags);
1870 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1872 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1875 return -1; /* should never happen */
1879 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1883 I32 id, n, cmd, infosize, getinfo;
1886 id = SvIVx(*++mark);
1887 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1888 cmd = SvIVx(*++mark);
1891 getinfo = (cmd == IPC_STAT);
1897 if (cmd == IPC_STAT || cmd == IPC_SET)
1898 infosize = sizeof(struct msqid_ds);
1903 if (cmd == IPC_STAT || cmd == IPC_SET)
1904 infosize = sizeof(struct shmid_ds);
1910 if (cmd == IPC_STAT || cmd == IPC_SET)
1911 infosize = sizeof(struct semid_ds);
1912 else if (cmd == GETALL || cmd == SETALL)
1914 struct semid_ds semds;
1916 #ifdef EXTRA_F_IN_SEMUN_BUF
1917 semun.buff = &semds;
1921 getinfo = (cmd == GETALL);
1922 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1924 infosize = semds.sem_nsems * sizeof(short);
1925 /* "short" is technically wrong but much more portable
1926 than guessing about u_?short(_t)? */
1929 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1933 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1935 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1944 SvPV_force(astr, len);
1945 a = SvGROW(astr, infosize+1);
1949 a = SvPV(astr, len);
1950 if (len != infosize)
1951 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1960 a = INT2PTR(char *,i); /* ouch */
1967 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1973 union semun unsemds;
1975 #ifdef EXTRA_F_IN_SEMUN_BUF
1976 unsemds.buff = (struct semid_ds *)a;
1978 unsemds.buf = (struct semid_ds *)a;
1980 ret = Semctl(id, n, cmd, unsemds);
1982 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1989 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1993 if (getinfo && ret >= 0) {
1994 SvCUR_set(astr, infosize);
1995 *SvEND(astr) = '\0';
2002 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
2007 I32 id, msize, flags;
2010 id = SvIVx(*++mark);
2012 flags = SvIVx(*++mark);
2013 mbuf = SvPV(mstr, len);
2014 if ((msize = len - sizeof(long)) < 0)
2015 Perl_croak(aTHX_ "Arg too short for msgsnd");
2017 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
2019 Perl_croak(aTHX_ "msgsnd not implemented");
2024 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
2030 I32 id, msize, flags, ret;
2033 id = SvIVx(*++mark);
2035 /* suppress warning when reading into undef var --jhi */
2037 sv_setpvn(mstr, "", 0);
2038 msize = SvIVx(*++mark);
2039 mtype = (long)SvIVx(*++mark);
2040 flags = SvIVx(*++mark);
2041 SvPV_force(mstr, len);
2042 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
2045 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
2047 SvCUR_set(mstr, sizeof(long)+ret);
2048 *SvEND(mstr) = '\0';
2049 #ifndef INCOMPLETE_TAINTS
2050 /* who knows who has been playing with this message? */
2056 Perl_croak(aTHX_ "msgrcv not implemented");
2061 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2069 id = SvIVx(*++mark);
2071 opbuf = SvPV(opstr, opsize);
2072 if (opsize < 3 * SHORTSIZE
2073 || (opsize % (3 * SHORTSIZE))) {
2074 SETERRNO(EINVAL,LIB$_INVARG);
2078 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2080 int nsops = opsize / (3 * sizeof (short));
2082 short *ops = (short *) opbuf;
2084 struct sembuf *temps, *t;
2087 New (0, temps, nsops, struct sembuf);
2095 result = semop(id, temps, nsops);
2109 Perl_croak(aTHX_ "semop not implemented");
2114 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2119 I32 id, mpos, msize;
2121 struct shmid_ds shmds;
2123 id = SvIVx(*++mark);
2125 mpos = SvIVx(*++mark);
2126 msize = SvIVx(*++mark);
2128 if (shmctl(id, IPC_STAT, &shmds) == -1)
2130 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2131 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2134 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2135 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2137 if (optype == OP_SHMREAD) {
2138 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2140 sv_setpvn(mstr, "", 0);
2141 SvPV_force(mstr, len);
2142 mbuf = SvGROW(mstr, msize+1);
2144 Copy(shm + mpos, mbuf, msize, char);
2145 SvCUR_set(mstr, msize);
2146 *SvEND(mstr) = '\0';
2148 #ifndef INCOMPLETE_TAINTS
2149 /* who knows who has been playing with this shared memory? */
2156 mbuf = SvPV(mstr, len);
2157 if ((n = len) > msize)
2159 Copy(mbuf, shm + mpos, n, char);
2161 memzero(shm + mpos + n, msize - n);
2165 Perl_croak(aTHX_ "shm I/O not implemented");
2169 #endif /* SYSV IPC */
2174 =for apidoc start_glob
2176 Function called by C<do_readline> to spawn a glob (or do the glob inside
2177 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2178 this glob starter is only used by miniperl during the build process.
2179 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2185 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2187 SV *tmpcmd = NEWSV(55, 0);
2191 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2192 /* since spawning off a process is a real performance hit */
2194 #include <descrip.h>
2195 #include <lib$routines.h>
2198 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2199 char vmsspec[NAM$C_MAXRSS+1];
2200 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2201 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2204 struct dsc$descriptor_s wilddsc
2205 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2206 struct dsc$descriptor_vs rsdsc
2207 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2208 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2210 /* We could find out if there's an explicit dev/dir or version
2211 by peeking into lib$find_file's internal context at
2212 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2213 but that's unsupported, so I don't want to do it now and
2214 have it bite someone in the future. */
2215 cp = SvPV(tmpglob,i);
2217 if (cp[i] == ';') hasver = 1;
2219 if (sts) hasver = 1;
2223 hasdir = isunix = 1;
2226 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2231 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2233 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2234 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2235 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2236 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2237 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2238 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
2239 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2240 &dfltdsc,NULL,NULL,NULL))&1)) {
2241 end = rstr + (unsigned long int) *rslt;
2242 if (!hasver) while (*end != ';') end--;
2243 *(end++) = '\n'; *end = '\0';
2244 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2246 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2251 while (*(--begin) != ']' && *begin != '>') ;
2254 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2256 if (cxt) (void)lib$find_file_end(&cxt);
2257 if (ok && sts != RMS$_NMF &&
2258 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
2261 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2263 PerlIO_close(tmpfp);
2267 PerlIO_rewind(tmpfp);
2268 IoTYPE(io) = IoTYPE_RDONLY;
2269 IoIFP(io) = fp = tmpfp;
2270 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2275 #ifdef MACOS_TRADITIONAL
2276 sv_setpv(tmpcmd, "glob ");
2277 sv_catsv(tmpcmd, tmpglob);
2278 sv_catpv(tmpcmd, " |");
2282 sv_setpv(tmpcmd, "for a in ");
2283 sv_catsv(tmpcmd, tmpglob);
2284 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2287 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2288 sv_catsv(tmpcmd, tmpglob);
2290 sv_setpv(tmpcmd, "perlglob ");
2291 sv_catsv(tmpcmd, tmpglob);
2292 sv_catpv(tmpcmd, " |");
2297 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2298 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2299 sv_catsv(tmpcmd, tmpglob);
2300 sv_catpv(tmpcmd, "' 2>/dev/null |");
2302 sv_setpv(tmpcmd, "echo ");
2303 sv_catsv(tmpcmd, tmpglob);
2305 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2307 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2310 #endif /* !DOSISH */
2311 #endif /* MACOS_TRADITIONAL */
2312 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2313 FALSE, O_RDONLY, 0, Nullfp);