3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "Far below them they saw the white waters pour into a foaming bowl, and
13 * then swirl darkly about a deep oval basin in the rocks, until they found
14 * their way out again through a narrow gate, and flowed away, fuming and
15 * chattering, into calmer and more level reaches."
19 #define PERL_IN_DOIO_C
22 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
31 # ifndef HAS_SHMAT_PROTOTYPE
32 extern Shmat_t shmat (int, char *, int);
38 # if defined(_MSC_VER) || defined(__MINGW32__)
39 # include <sys/utime.h>
46 # define OPEN_EXCL O_EXCL
51 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
56 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
57 int rawmode, int rawperm, PerlIO *supplied_fp)
59 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
60 supplied_fp, (SV **) NULL, 0);
64 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
65 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
68 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
69 supplied_fp, &svs, 1);
73 Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
74 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
77 register IO *io = GvIOn(gv);
78 PerlIO *saveifp = Nullfp;
79 PerlIO *saveofp = Nullfp;
81 char savetype = IoTYPE_CLOSED;
86 bool was_fdopen = FALSE;
87 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
89 char mode[8]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
92 Zero(mode,sizeof(mode),char);
93 PL_forkprocess = 1; /* assume true if no fork */
95 /* Collect default raw/crlf info from the op */
96 if (PL_op && PL_op->op_type == OP_OPEN) {
97 /* set up IO layers */
98 U8 flags = PL_op->op_private;
99 in_raw = (flags & OPpOPEN_IN_RAW);
100 in_crlf = (flags & OPpOPEN_IN_CRLF);
101 out_raw = (flags & OPpOPEN_OUT_RAW);
102 out_crlf = (flags & OPpOPEN_OUT_CRLF);
105 /* If currently open - close before we re-open */
107 fd = PerlIO_fileno(IoIFP(io));
108 if (IoTYPE(io) == IoTYPE_STD) {
109 /* This is a clone of one of STD* handles */
112 else if (fd >= 0 && fd <= PL_maxsysfd) {
113 /* This is one of the original STD* handles */
116 savetype = IoTYPE(io);
120 else if (IoTYPE(io) == IoTYPE_PIPE)
121 result = PerlProc_pclose(IoIFP(io));
122 else if (IoIFP(io) != IoOFP(io)) {
124 result = PerlIO_close(IoOFP(io));
125 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
128 result = PerlIO_close(IoIFP(io));
131 result = PerlIO_close(IoIFP(io));
132 if (result == EOF && fd > PL_maxsysfd) {
133 /* Why is this not Perl_warn*() call ? */
134 PerlIO_printf(Perl_error_log,
135 "Warning: unable to close filehandle %s properly.\n",
138 IoOFP(io) = IoIFP(io) = Nullfp;
142 /* sysopen style args, i.e. integer mode and permissions */
146 #ifdef O_APPEND /* Not fully portable. */
149 #ifdef O_TRUNC /* Not fully portable. */
154 O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
158 Perl_croak(aTHX_ "panic: sysopen with multiple args");
166 It might be (in OS/390 and Mac OS Classic it is)
172 This means that simple & with O_RDWR would look
173 like O_RDONLY is present. Therefore we have to
176 if ((ismodifying = (rawmode & modifyingmode))) {
177 if ((ismodifying & O_WRONLY) == O_WRONLY ||
178 (ismodifying & O_RDWR) == O_RDWR ||
179 (ismodifying & (O_CREAT|appendtrunc)))
180 TAINT_PROPER("sysopen");
182 mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */
184 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
185 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
188 IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
190 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
194 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
197 /* Regular (non-sys) open */
202 PerlIO *that_fp = NULL;
204 type = savepvn(name, len);
208 /* Lose leading and trailing white space */
210 for (; isSPACE(*type); type++) ;
211 while (tend > type && isSPACE(tend[-1]))
215 /* New style explicit name, type is just mode and layer info */
218 if (SvROK(*svp) && !strchr(name,'&')) {
220 Perl_warner(aTHX_ packWARN(WARN_IO),
221 "Can't open a reference");
222 SETERRNO(EINVAL, LIB_INVARG);
225 #endif /* USE_STDIO */
226 name = SvOK(*svp) ? SvPV(*svp, l) : "";
228 name = savepvn(name, len);
236 if ((*type == IoTYPE_RDWR) && /* scary */
237 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
238 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
239 TAINT_PROPER("open");
244 if (*type == IoTYPE_PIPE) {
246 if (type[1] != IoTYPE_STD) {
248 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
253 for (type++; isSPACE(*type); type++) ;
259 /* command is missing 19990114 */
260 if (ckWARN(WARN_PIPE))
261 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
265 if (strNE(name,"-") || num_svs)
267 TAINT_PROPER("piped open");
268 if (!num_svs && name[len-1] == '|') {
270 if (ckWARN(WARN_PIPE))
271 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
280 fp = PerlProc_popen_list(mode, num_svs, svp);
283 fp = PerlProc_popen(name,mode);
287 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
293 else if (*type == IoTYPE_WRONLY) {
294 TAINT_PROPER("open");
296 if (*type == IoTYPE_WRONLY) {
297 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
298 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
313 dodup = PERLIO_DUP_FD;
319 if (!num_svs && !*type && supplied_fp) {
320 /* "<+&" etc. is used by typemaps */
325 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
328 for (; isSPACE(*type); type++) ;
329 if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) {
333 else if (isDIGIT(*type)) {
339 thatio = sv_2io(*svp);
343 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
344 thatio = GvIO(thatgv);
348 SETERRNO(EINVAL,SS_IVCHAN);
352 if ((that_fp = IoIFP(thatio))) {
353 /* Flush stdio buffer before dup. --mjd
354 * Unfortunately SEEK_CURing 0 seems to
355 * be optimized away on most platforms;
356 * only Solaris and Linux seem to flush
359 /* sfio fails to clear error on next
360 sfwrite, contrary to documentation.
362 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
363 PerlIO_clearerr(that_fp);
365 /* On the other hand, do all platforms
366 * take gracefully to flushing a read-only
367 * filehandle? Perhaps we should do
368 * fsetpos(src)+fgetpos(dst)? --nik */
369 PerlIO_flush(that_fp);
370 fd = PerlIO_fileno(that_fp);
371 /* When dup()ing STDIN, STDOUT or STDERR
372 * explicitly set appropriate access mode */
373 if (that_fp == PerlIO_stdout()
374 || that_fp == PerlIO_stderr())
375 IoTYPE(io) = IoTYPE_WRONLY;
376 else if (that_fp == PerlIO_stdin())
377 IoTYPE(io) = IoTYPE_RDONLY;
378 /* When dup()ing a socket, say result is
380 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
381 IoTYPE(io) = IoTYPE_SOCKET;
389 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
393 fd = PerlLIO_dup(fd);
396 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
405 for (; isSPACE(*type); type++) ;
406 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
409 fp = PerlIO_stdout();
410 IoTYPE(io) = IoTYPE_STD;
412 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
417 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
422 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
425 } /* IoTYPE_WRONLY */
426 else if (*type == IoTYPE_RDONLY) {
428 for (type++; isSPACE(*type); type++) ;
438 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
442 IoTYPE(io) = IoTYPE_STD;
444 Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
449 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
454 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
456 } /* IoTYPE_RDONLY */
457 else if ((num_svs && /* '-|...' or '...|' */
458 type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
459 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
461 type += 2; /* skip over '-|' */
465 while (tend > type && isSPACE(tend[-1]))
468 for (; isSPACE(*type); type++) ;
473 /* command is missing 19990114 */
474 if (ckWARN(WARN_PIPE))
475 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
479 if (strNE(name,"-") || num_svs)
481 TAINT_PROPER("piped open");
488 fp = PerlProc_popen_list(mode,num_svs,svp);
491 fp = PerlProc_popen(name,mode);
493 IoTYPE(io) = IoTYPE_PIPE;
495 for (; isSPACE(*type); type++) ;
497 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
503 else { /* layer(Args) */
505 goto unknown_open_mode;
507 IoTYPE(io) = IoTYPE_RDONLY;
509 for (; isSPACE(*name); name++) ;
515 if (strEQ(name,"-")) {
517 IoTYPE(io) = IoTYPE_STD;
521 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
526 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
531 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
532 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
536 if (ckWARN(WARN_IO)) {
537 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
538 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
539 Perl_warner(aTHX_ packWARN(WARN_IO),
540 "Filehandle STD%s reopened as %s only for input",
541 ((fp == PerlIO_stdout()) ? "OUT" : "ERR"),
544 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
545 Perl_warner(aTHX_ packWARN(WARN_IO),
546 "Filehandle STDIN reopened as %s only for output",
551 fd = PerlIO_fileno(fp);
552 /* If there is no fd (e.g. PerlIO::scalar) assume it isn't a
553 * socket - this covers PerlIO::scalar - otherwise unless we "know" the
554 * type probe for socket-ness.
556 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
557 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
558 /* If PerlIO claims to have fd we had better be able to fstat() it. */
559 (void) PerlIO_close(fp);
563 if (S_ISSOCK(PL_statbuf.st_mode))
564 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
568 !(PL_statbuf.st_mode & S_IFMT)
572 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
573 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
574 ) { /* on OS's that return 0 on fstat()ed pipe */
576 Sock_size_t buflen = sizeof tmpbuf;
577 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
578 || errno != ENOTSOCK)
579 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
580 /* but some return 0 for streams too, sigh */
582 #endif /* HAS_SOCKET */
583 #endif /* !PERL_MICRO */
587 * If this is a standard handle we discard all the layer stuff
588 * and just dup the fd into whatever was on the handle before !
591 if (saveifp) { /* must use old fp? */
592 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
593 then dup the new fileno down
596 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
597 if (saveofp != saveifp) { /* was a socket? */
598 PerlIO_close(saveofp);
602 /* Still a small can-of-worms here if (say) PerlIO::scalar
603 is assigned to (say) STDOUT - for now let dup2() fail
604 and provide the error
606 if (PerlLIO_dup2(fd, savefd) < 0) {
607 (void)PerlIO_close(fp);
611 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
612 char newname[FILENAME_MAX+1];
613 if (PerlIO_getname(fp, newname)) {
614 if (fd == PerlIO_fileno(PerlIO_stdout()))
615 Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
616 if (fd == PerlIO_fileno(PerlIO_stderr()))
617 Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
623 /* PL_fdpid isn't used on Windows, so avoid this useless work.
624 * XXX Probably the same for a lot of other places. */
630 sv = *av_fetch(PL_fdpid,fd,TRUE);
631 (void)SvUPGRADE(sv, SVt_IV);
634 sv = *av_fetch(PL_fdpid,savefd,TRUE);
635 (void)SvUPGRADE(sv, SVt_IV);
642 /* need to close fp without closing underlying fd */
643 int ofd = PerlIO_fileno(fp);
644 int dupfd = PerlLIO_dup(ofd);
645 #if defined(HAS_FCNTL) && defined(F_SETFD)
646 /* Assume if we have F_SETFD we have F_GETFD */
647 int coe = fcntl(ofd,F_GETFD);
650 PerlLIO_dup2(dupfd,ofd);
651 #if defined(HAS_FCNTL) && defined(F_SETFD)
652 /* The dup trick has lost close-on-exec on ofd */
653 fcntl(ofd,F_SETFD, coe);
655 PerlLIO_close(dupfd);
662 fd = PerlIO_fileno(fp);
664 #if defined(HAS_FCNTL) && defined(F_SETFD)
666 int save_errno = errno;
667 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
673 IoFLAGS(io) &= ~IOf_NOLINE;
675 if (IoTYPE(io) == IoTYPE_SOCKET
676 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
678 if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC)
681 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,svp))) {
695 IoTYPE(io) = savetype;
700 Perl_nextargv(pTHX_ register GV *gv)
703 #ifndef FLEXFILENAMES
712 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
713 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
714 IoFLAGS(io) &= ~IOf_START;
716 if (!PL_argvout_stack)
717 PL_argvout_stack = newAV();
718 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
721 if (PL_filemode & (S_ISUID|S_ISGID)) {
722 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
724 (void)fchmod(PL_lastfd,PL_filemode);
726 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
732 while (av_len(GvAV(gv)) >= 0) {
734 sv = av_shift(GvAV(gv));
736 sv_setsv(GvSV(gv),sv);
737 SvSETMAGIC(GvSV(gv));
738 PL_oldname = SvPVx(GvSV(gv), oldlen);
739 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
741 TAINT_PROPER("inplace open");
742 if (oldlen == 1 && *PL_oldname == '-') {
743 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
744 return IoIFP(GvIOp(gv));
746 #ifndef FLEXFILENAMES
747 filedev = PL_statbuf.st_dev;
748 fileino = PL_statbuf.st_ino;
750 PL_filemode = PL_statbuf.st_mode;
751 fileuid = PL_statbuf.st_uid;
752 filegid = PL_statbuf.st_gid;
753 if (!S_ISREG(PL_filemode)) {
754 if (ckWARN_d(WARN_INPLACE))
755 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
756 "Can't do inplace edit: %s is not a regular file",
762 char *star = strchr(PL_inplace, '*');
764 char *begin = PL_inplace;
765 sv_setpvn(sv, "", 0);
767 sv_catpvn(sv, begin, star - begin);
768 sv_catpvn(sv, PL_oldname, oldlen);
770 } while ((star = strchr(begin, '*')));
775 sv_catpv(sv,PL_inplace);
777 #ifndef FLEXFILENAMES
778 if ((PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
779 && PL_statbuf.st_dev == filedev
780 && PL_statbuf.st_ino == fileino)
782 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
786 if (ckWARN_d(WARN_INPLACE))
787 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
788 "Can't do inplace edit: %"SVf" would not be unique",
795 #if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
796 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
797 if (ckWARN_d(WARN_INPLACE))
798 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
799 "Can't rename %s to %"SVf": %s, skipping file",
800 PL_oldname, sv, Strerror(errno) );
806 (void)PerlLIO_unlink(SvPVX(sv));
807 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
808 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
811 (void)UNLINK(SvPVX(sv));
812 if (link(PL_oldname,SvPVX(sv)) < 0) {
813 if (ckWARN_d(WARN_INPLACE))
814 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
815 "Can't rename %s to %"SVf": %s, skipping file",
816 PL_oldname, sv, Strerror(errno) );
820 (void)UNLINK(PL_oldname);
824 #if !defined(DOSISH) && !defined(AMIGAOS)
825 # ifndef VMS /* Don't delete; use automatic file versioning */
826 if (UNLINK(PL_oldname) < 0) {
827 if (ckWARN_d(WARN_INPLACE))
828 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
829 "Can't remove %s: %s, skipping file",
830 PL_oldname, Strerror(errno) );
836 Perl_croak(aTHX_ "Can't do inplace edit without backup");
840 sv_setpvn(sv,">",!PL_inplace);
841 sv_catpvn(sv,PL_oldname,oldlen);
842 SETERRNO(0,0); /* in case sprintf set errno */
844 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
845 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
847 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
848 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
851 if (ckWARN_d(WARN_INPLACE))
852 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
853 PL_oldname, Strerror(errno) );
857 setdefout(PL_argvoutgv);
858 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
859 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
861 (void)fchmod(PL_lastfd,PL_filemode);
863 # if !(defined(WIN32) && defined(__BORLANDC__))
864 /* Borland runtime creates a readonly file! */
865 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
868 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
870 (void)fchown(PL_lastfd,fileuid,filegid);
873 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
878 return IoIFP(GvIOp(gv));
881 if (ckWARN_d(WARN_INPLACE)) {
883 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
884 && !S_ISREG(PL_statbuf.st_mode))
886 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
887 "Can't do inplace edit: %s is not a regular file",
891 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
892 PL_oldname, Strerror(eno));
896 if (io && (IoFLAGS(io) & IOf_ARGV))
897 IoFLAGS(io) |= IOf_START;
899 (void)do_close(PL_argvoutgv,FALSE);
900 if (io && (IoFLAGS(io) & IOf_ARGV)
901 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
903 GV *oldout = (GV*)av_pop(PL_argvout_stack);
905 SvREFCNT_dec(oldout);
908 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
915 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
934 if (PerlProc_pipe(fd) < 0)
936 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPESOCK_MODE);
937 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPESOCK_MODE);
938 IoOFP(rstio) = IoIFP(rstio);
939 IoIFP(wstio) = IoOFP(wstio);
940 IoTYPE(rstio) = IoTYPE_RDONLY;
941 IoTYPE(wstio) = IoTYPE_WRONLY;
942 if (!IoIFP(rstio) || !IoOFP(wstio)) {
943 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
944 else PerlLIO_close(fd[0]);
945 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
946 else PerlLIO_close(fd[1]);
950 sv_setsv(sv,&PL_sv_yes);
954 sv_setsv(sv,&PL_sv_undef);
959 /* explicit renamed to avoid C++ conflict -- kja */
961 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
968 if (!gv || SvTYPE(gv) != SVt_PVGV) {
970 SETERRNO(EBADF,SS_IVCHAN);
974 if (!io) { /* never opened */
976 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
977 report_evil_fh(gv, io, PL_op->op_type);
978 SETERRNO(EBADF,SS_IVCHAN);
982 retval = io_close(io, not_implicit);
986 IoLINES_LEFT(io) = IoPAGE_LEN(io);
988 IoTYPE(io) = IoTYPE_CLOSED;
993 Perl_io_close(pTHX_ IO *io, bool not_implicit)
999 if (IoTYPE(io) == IoTYPE_PIPE) {
1000 status = PerlProc_pclose(IoIFP(io));
1002 STATUS_NATIVE_SET(status);
1003 retval = (STATUS_POSIX == 0);
1006 retval = (status != -1);
1009 else if (IoTYPE(io) == IoTYPE_STD)
1012 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
1013 retval = (PerlIO_close(IoOFP(io)) != EOF);
1014 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
1017 retval = (PerlIO_close(IoIFP(io)) != EOF);
1019 IoOFP(io) = IoIFP(io) = Nullfp;
1021 else if (not_implicit) {
1022 SETERRNO(EBADF,SS_IVCHAN);
1029 Perl_do_eof(pTHX_ GV *gv)
1038 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
1039 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1044 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
1045 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
1046 return FALSE; /* this is the most usual case */
1049 saverrno = errno; /* getc and ungetc can stomp on errno */
1050 ch = PerlIO_getc(IoIFP(io));
1052 (void)PerlIO_ungetc(IoIFP(io),ch);
1058 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
1059 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1060 PerlIO_set_cnt(IoIFP(io),-1);
1062 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
1063 if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
1067 return TRUE; /* normal fp, definitely end of file */
1073 Perl_do_tell(pTHX_ GV *gv)
1075 register IO *io = 0;
1076 register PerlIO *fp;
1078 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1079 #ifdef ULTRIX_STDIO_BOTCH
1081 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1083 return PerlIO_tell(fp);
1085 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1086 report_evil_fh(gv, io, PL_op->op_type);
1087 SETERRNO(EBADF,RMS_IFI);
1092 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1094 register IO *io = 0;
1095 register PerlIO *fp;
1097 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1098 #ifdef ULTRIX_STDIO_BOTCH
1100 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1102 return PerlIO_seek(fp, pos, whence) >= 0;
1104 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1105 report_evil_fh(gv, io, PL_op->op_type);
1106 SETERRNO(EBADF,RMS_IFI);
1111 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1113 register IO *io = 0;
1114 register PerlIO *fp;
1116 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1117 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1118 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1119 report_evil_fh(gv, io, PL_op->op_type);
1120 SETERRNO(EBADF,RMS_IFI);
1125 Perl_mode_from_discipline(pTHX_ SV *discp)
1127 int mode = O_BINARY;
1130 char *s = SvPV(discp,len);
1135 if (len > 3 && strnEQ(s+1, "raw", 3)
1136 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1145 if (len > 4 && strnEQ(s+1, "crlf", 4)
1146 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1155 goto fail_discipline;
1158 else if (isSPACE(*s)) {
1165 end = strchr(s+1, ':');
1168 #ifndef PERLIO_LAYERS
1169 Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s);
1180 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1182 /* The old body of this is now in non-LAYER part of perlio.c
1183 * This is a stub for any XS code which might have been calling it.
1185 char *name = ":raw";
1186 #ifdef PERLIO_USING_CRLF
1187 if (!(mode & O_BINARY))
1190 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1193 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1194 /* code courtesy of William Kucharski */
1197 I32 my_chsize(fd, length)
1198 I32 fd; /* file descriptor */
1199 Off_t length; /* length to set file to */
1204 if (PerlLIO_fstat(fd, &filebuf) < 0)
1207 if (filebuf.st_size < length) {
1209 /* extend file length */
1211 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1214 /* write a "0" byte */
1216 if ((PerlLIO_write(fd, "", 1)) != 1)
1220 /* truncate length */
1224 fl.l_start = length;
1225 fl.l_type = F_WRLCK; /* write lock on file space */
1228 * This relies on the UNDOCUMENTED F_FREESP argument to
1229 * fcntl(2), which truncates the file so that it ends at the
1230 * position indicated by fl.l_start.
1232 * Will minor miracles never cease?
1235 if (fcntl(fd, F_FREESP, &fl) < 0)
1242 #endif /* F_FREESP */
1245 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1247 register char *tmps;
1250 /* assuming fp is checked earlier */
1256 if (SvIOK(sv) && SvIVX(sv) != 0) {
1257 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1258 return !PerlIO_error(fp);
1260 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1261 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1262 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1263 return !PerlIO_error(fp);
1266 switch (SvTYPE(sv)) {
1268 if (ckWARN(WARN_UNINITIALIZED))
1276 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1278 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1279 return !PerlIO_error(fp);
1283 if (PerlIO_isutf8(fp)) {
1285 sv_utf8_upgrade_flags(sv = sv_mortalcopy(sv),
1286 SV_GMAGIC|SV_UTF8_NO_ENCODING);
1288 else if (DO_UTF8(sv)) {
1289 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
1290 && ckWARN_d(WARN_UTF8))
1292 Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
1295 tmps = SvPV(sv, len);
1298 /* To detect whether the process is about to overstep its
1299 * filesize limit we would need getrlimit(). We could then
1300 * also transparently raise the limit with setrlimit() --
1301 * but only until the system hard limit/the filesystem limit,
1302 * at which we would get EPERM. Note that when using buffered
1303 * io the write failure can be delayed until the flush/close. --jhi */
1304 if (len && (PerlIO_write(fp,tmps,len) == 0))
1306 return !PerlIO_error(fp);
1316 if (PL_op->op_flags & OPf_REF) {
1321 if (io && IoIFP(io)) {
1323 sv_setpv(PL_statname,"");
1324 PL_laststype = OP_STAT;
1325 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1329 return PL_laststatval;
1330 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1331 report_evil_fh(gv, io, PL_op->op_type);
1333 sv_setpv(PL_statname,"");
1334 return (PL_laststatval = -1);
1342 if (SvTYPE(sv) == SVt_PVGV) {
1346 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1353 sv_setpvn(PL_statname, s, len);
1354 s = SvPVX(PL_statname); /* s now NUL-terminated */
1355 PL_laststype = OP_STAT;
1356 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1357 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1358 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
1359 return PL_laststatval;
1369 if (PL_op->op_flags & OPf_REF) {
1371 if (cGVOP_gv == PL_defgv) {
1372 if (PL_laststype != OP_LSTAT)
1373 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1374 return PL_laststatval;
1376 if (ckWARN(WARN_IO)) {
1377 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1379 return (PL_laststatval = -1);
1383 PL_laststype = OP_LSTAT;
1387 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
1388 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1389 GvENAME((GV*) SvRV(sv)));
1390 return (PL_laststatval = -1);
1392 sv_setpv(PL_statname,SvPV(sv, n_a));
1393 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1394 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1395 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
1396 return PL_laststatval;
1401 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1403 return do_aexec5(really, mark, sp, 0, 0);
1408 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1409 int fd, int do_report)
1411 #ifdef MACOS_TRADITIONAL
1412 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1415 char *tmps = Nullch;
1419 New(401,PL_Argv, sp - mark + 1, char*);
1421 while (++mark <= sp) {
1423 *a++ = SvPVx(*mark, n_a);
1429 tmps = SvPV(really, n_a);
1430 if ((!really && *PL_Argv[0] != '/') ||
1431 (really && *tmps != '/')) /* will execvp use PATH? */
1432 TAINT_ENV(); /* testing IFS here is overkill, probably */
1434 if (really && *tmps)
1435 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1437 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1439 if (ckWARN(WARN_EXEC))
1440 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1441 (really ? tmps : PL_Argv[0]), Strerror(errno));
1445 PerlLIO_write(fd, (void*)&e, sizeof(int));
1455 Perl_do_execfree(pTHX)
1459 PL_Argv = Null(char **);
1467 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1470 Perl_do_exec(pTHX_ char *cmd)
1472 return do_exec3(cmd,0,0);
1476 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1481 while (*cmd && isSPACE(*cmd))
1484 /* save an extra exec if possible */
1489 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1490 strnEQ(cmd+PL_cshlen," -c",3)) {
1492 s = cmd+PL_cshlen+3;
1506 if (s[-1] == '\'') {
1509 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1519 /* see if there are shell metacharacters in it */
1521 if (*cmd == '.' && isSPACE(cmd[1]))
1524 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1527 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1531 for (s = cmd; *s; s++) {
1532 if (*s != ' ' && !isALPHA(*s) &&
1533 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1534 if (*s == '\n' && !s[1]) {
1538 /* handle the 2>&1 construct at the end */
1539 if (*s == '>' && s[1] == '&' && s[2] == '1'
1540 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1541 && (!s[3] || isSPACE(s[3])))
1545 while (*t && isSPACE(*t))
1547 if (!*t && (dup2(1,2) != -1)) {
1554 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1560 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1561 PL_Cmd = savepvn(cmd, s-cmd);
1563 for (s = PL_Cmd; *s;) {
1564 while (*s && isSPACE(*s)) s++;
1567 while (*s && !isSPACE(*s)) s++;
1574 PerlProc_execvp(PL_Argv[0],PL_Argv);
1576 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1583 if (ckWARN(WARN_EXEC))
1584 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1585 PL_Argv[0], Strerror(errno));
1587 PerlLIO_write(fd, (void*)&e, sizeof(int));
1596 #endif /* OS2 || WIN32 */
1599 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1603 register I32 tot = 0;
1606 SV **oldmark = mark;
1609 #define APPLY_TAINT_PROPER() \
1611 if (PL_tainted) { TAINT_PROPER(what); } \
1614 /* This is a first heuristic; it doesn't catch tainting magic. */
1616 while (++mark <= sp) {
1617 if (SvTAINTED(*mark)) {
1627 APPLY_TAINT_PROPER();
1630 APPLY_TAINT_PROPER();
1632 while (++mark <= sp) {
1633 char *name = SvPVx(*mark, n_a);
1634 APPLY_TAINT_PROPER();
1635 if (PerlLIO_chmod(name, val))
1643 APPLY_TAINT_PROPER();
1644 if (sp - mark > 2) {
1645 val = SvIVx(*++mark);
1646 val2 = SvIVx(*++mark);
1647 APPLY_TAINT_PROPER();
1649 while (++mark <= sp) {
1650 char *name = SvPVx(*mark, n_a);
1651 APPLY_TAINT_PROPER();
1652 if (PerlLIO_chown(name, val, val2))
1659 XXX Should we make lchown() directly available from perl?
1660 For now, we'll let Configure test for HAS_LCHOWN, but do
1661 nothing in the core.
1667 APPLY_TAINT_PROPER();
1670 s = SvPVx(*++mark, n_a);
1672 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1674 if ((val = whichsig(s)) < 0)
1675 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1679 APPLY_TAINT_PROPER();
1682 /* kill() doesn't do process groups (job trees?) under VMS */
1683 if (val < 0) val = -val;
1684 if (val == SIGKILL) {
1685 # include <starlet.h>
1686 /* Use native sys$delprc() to insure that target process is
1687 * deleted; supervisor-mode images don't pay attention to
1688 * CRTL's emulation of Unix-style signals and kill()
1690 while (++mark <= sp) {
1691 I32 proc = SvIVx(*mark);
1692 register unsigned long int __vmssts;
1693 APPLY_TAINT_PROPER();
1694 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1698 case SS$_NOSUCHNODE:
1699 SETERRNO(ESRCH,__vmssts);
1702 SETERRNO(EPERM,__vmssts);
1705 SETERRNO(EVMSERR,__vmssts);
1714 while (++mark <= sp) {
1715 I32 proc = SvIVx(*mark);
1716 APPLY_TAINT_PROPER();
1718 if (PerlProc_killpg(proc,val)) /* BSD */
1720 if (PerlProc_kill(-proc,val)) /* SYSV */
1726 while (++mark <= sp) {
1727 I32 proc = SvIVx(*mark);
1728 APPLY_TAINT_PROPER();
1729 if (PerlProc_kill(proc, val))
1737 APPLY_TAINT_PROPER();
1739 while (++mark <= sp) {
1740 s = SvPVx(*mark, n_a);
1741 APPLY_TAINT_PROPER();
1742 if (PL_euid || PL_unsafe) {
1746 else { /* don't let root wipe out directories without -U */
1747 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1759 APPLY_TAINT_PROPER();
1760 if (sp - mark > 2) {
1761 #if defined(I_UTIME) || defined(VMS)
1762 struct utimbuf utbuf;
1770 SV* accessed = *++mark;
1771 SV* modified = *++mark;
1772 void * utbufp = &utbuf;
1774 /* Be like C, and if both times are undefined, let the C
1775 * library figure out what to do. This usually means
1776 * "current time". */
1778 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1781 Zero(&utbuf, sizeof utbuf, char);
1783 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1784 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1786 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1787 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1790 APPLY_TAINT_PROPER();
1792 while (++mark <= sp) {
1793 char *name = SvPVx(*mark, n_a);
1794 APPLY_TAINT_PROPER();
1795 if (PerlLIO_utime(name, utbufp))
1806 #undef APPLY_TAINT_PROPER
1809 /* Do the permissions allow some operation? Assumes statcache already set. */
1810 #ifndef VMS /* VMS' cando is in vms.c */
1812 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1813 /* Note: we use `effective' both for uids and gids.
1814 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1817 /* [Comments and code from Len Reed]
1818 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1819 * to write-protected files. The execute permission bit is set
1820 * by the Miscrosoft C library stat() function for the following:
1825 * All files and directories are readable.
1826 * Directories and special files, e.g. "CON", cannot be
1828 * [Comment by Tom Dinger -- a directory can have the write-protect
1829 * bit set in the file system, but DOS permits changes to
1830 * the directory anyway. In addition, all bets are off
1831 * here for networked software, such as Novell and
1835 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1836 * too so it will actually look into the files for magic numbers
1838 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1840 #else /* ! DOSISH */
1841 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1842 if (mode == S_IXUSR) {
1843 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1847 return TRUE; /* root reads and writes anything */
1850 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1851 if (statbufp->st_mode & mode)
1852 return TRUE; /* ok as "user" */
1854 else if (ingroup(statbufp->st_gid,effective)) {
1855 if (statbufp->st_mode & mode >> 3)
1856 return TRUE; /* ok as "group" */
1858 else if (statbufp->st_mode & mode >> 6)
1859 return TRUE; /* ok as "other" */
1861 #endif /* ! DOSISH */
1866 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1868 #ifdef MACOS_TRADITIONAL
1869 /* This is simply not correct for AppleShare, but fix it yerself. */
1872 if (testgid == (effective ? PL_egid : PL_gid))
1874 #ifdef HAS_GETGROUPS
1879 Groups_t gary[NGROUPS];
1882 anum = getgroups(NGROUPS,gary);
1884 if (gary[anum] == testgid)
1892 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1895 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1900 key = (key_t)SvNVx(*++mark);
1901 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1902 flags = SvIVx(*++mark);
1908 return msgget(key, flags);
1912 return semget(key, n, flags);
1916 return shmget(key, n, flags);
1918 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1920 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1923 return -1; /* should never happen */
1927 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1931 I32 id, n, cmd, infosize, getinfo;
1934 id = SvIVx(*++mark);
1935 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1936 cmd = SvIVx(*++mark);
1939 getinfo = (cmd == IPC_STAT);
1945 if (cmd == IPC_STAT || cmd == IPC_SET)
1946 infosize = sizeof(struct msqid_ds);
1951 if (cmd == IPC_STAT || cmd == IPC_SET)
1952 infosize = sizeof(struct shmid_ds);
1958 if (cmd == IPC_STAT || cmd == IPC_SET)
1959 infosize = sizeof(struct semid_ds);
1960 else if (cmd == GETALL || cmd == SETALL)
1962 struct semid_ds semds;
1964 #ifdef EXTRA_F_IN_SEMUN_BUF
1965 semun.buff = &semds;
1969 getinfo = (cmd == GETALL);
1970 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1972 infosize = semds.sem_nsems * sizeof(short);
1973 /* "short" is technically wrong but much more portable
1974 than guessing about u_?short(_t)? */
1977 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1981 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1983 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1992 SvPV_force(astr, len);
1993 a = SvGROW(astr, infosize+1);
1997 a = SvPV(astr, len);
1998 if (len != infosize)
1999 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
2008 a = INT2PTR(char *,i); /* ouch */
2015 ret = msgctl(id, cmd, (struct msqid_ds *)a);
2021 union semun unsemds;
2023 #ifdef EXTRA_F_IN_SEMUN_BUF
2024 unsemds.buff = (struct semid_ds *)a;
2026 unsemds.buf = (struct semid_ds *)a;
2028 ret = Semctl(id, n, cmd, unsemds);
2030 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2037 ret = shmctl(id, cmd, (struct shmid_ds *)a);
2041 if (getinfo && ret >= 0) {
2042 SvCUR_set(astr, infosize);
2043 *SvEND(astr) = '\0';
2050 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
2055 I32 id, msize, flags;
2058 id = SvIVx(*++mark);
2060 flags = SvIVx(*++mark);
2061 mbuf = SvPV(mstr, len);
2062 if ((msize = len - sizeof(long)) < 0)
2063 Perl_croak(aTHX_ "Arg too short for msgsnd");
2065 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
2067 Perl_croak(aTHX_ "msgsnd not implemented");
2072 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
2078 I32 id, msize, flags, ret;
2081 id = SvIVx(*++mark);
2083 /* suppress warning when reading into undef var --jhi */
2085 sv_setpvn(mstr, "", 0);
2086 msize = SvIVx(*++mark);
2087 mtype = (long)SvIVx(*++mark);
2088 flags = SvIVx(*++mark);
2089 SvPV_force(mstr, len);
2090 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
2093 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
2095 SvCUR_set(mstr, sizeof(long)+ret);
2096 *SvEND(mstr) = '\0';
2097 #ifndef INCOMPLETE_TAINTS
2098 /* who knows who has been playing with this message? */
2104 Perl_croak(aTHX_ "msgrcv not implemented");
2109 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2117 id = SvIVx(*++mark);
2119 opbuf = SvPV(opstr, opsize);
2120 if (opsize < 3 * SHORTSIZE
2121 || (opsize % (3 * SHORTSIZE))) {
2122 SETERRNO(EINVAL,LIB_INVARG);
2126 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2128 int nsops = opsize / (3 * sizeof (short));
2130 short *ops = (short *) opbuf;
2132 struct sembuf *temps, *t;
2135 New (0, temps, nsops, struct sembuf);
2143 result = semop(id, temps, nsops);
2157 Perl_croak(aTHX_ "semop not implemented");
2162 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2167 I32 id, mpos, msize;
2169 struct shmid_ds shmds;
2171 id = SvIVx(*++mark);
2173 mpos = SvIVx(*++mark);
2174 msize = SvIVx(*++mark);
2176 if (shmctl(id, IPC_STAT, &shmds) == -1)
2178 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2179 SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */
2182 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2183 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2185 if (optype == OP_SHMREAD) {
2186 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2188 sv_setpvn(mstr, "", 0);
2189 SvPV_force(mstr, len);
2190 mbuf = SvGROW(mstr, msize+1);
2192 Copy(shm + mpos, mbuf, msize, char);
2193 SvCUR_set(mstr, msize);
2194 *SvEND(mstr) = '\0';
2196 #ifndef INCOMPLETE_TAINTS
2197 /* who knows who has been playing with this shared memory? */
2204 mbuf = SvPV(mstr, len);
2205 if ((n = len) > msize)
2207 Copy(mbuf, shm + mpos, n, char);
2209 memzero(shm + mpos + n, msize - n);
2213 Perl_croak(aTHX_ "shm I/O not implemented");
2217 #endif /* SYSV IPC */
2222 =for apidoc start_glob
2224 Function called by C<do_readline> to spawn a glob (or do the glob inside
2225 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2226 this glob starter is only used by miniperl during the build process.
2227 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2233 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2235 SV *tmpcmd = NEWSV(55, 0);
2239 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2240 /* since spawning off a process is a real performance hit */
2242 #include <descrip.h>
2243 #include <lib$routines.h>
2246 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2247 char vmsspec[NAM$C_MAXRSS+1];
2248 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2249 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2252 struct dsc$descriptor_s wilddsc
2253 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2254 struct dsc$descriptor_vs rsdsc
2255 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2256 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2258 /* We could find out if there's an explicit dev/dir or version
2259 by peeking into lib$find_file's internal context at
2260 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2261 but that's unsupported, so I don't want to do it now and
2262 have it bite someone in the future. */
2263 cp = SvPV(tmpglob,i);
2265 if (cp[i] == ';') hasver = 1;
2267 if (sts) hasver = 1;
2271 hasdir = isunix = 1;
2274 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2279 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2281 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2282 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2283 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2284 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2285 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2286 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
2287 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2288 &dfltdsc,NULL,NULL,NULL))&1)) {
2289 end = rstr + (unsigned long int) *rslt;
2290 if (!hasver) while (*end != ';') end--;
2291 *(end++) = '\n'; *end = '\0';
2292 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2294 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2299 while (*(--begin) != ']' && *begin != '>') ;
2302 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2304 if (cxt) (void)lib$find_file_end(&cxt);
2305 if (ok && sts != RMS$_NMF &&
2306 sts != RMS$_DNF && sts != RMS_FNF) ok = 0;
2309 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2311 PerlIO_close(tmpfp);
2315 PerlIO_rewind(tmpfp);
2316 IoTYPE(io) = IoTYPE_RDONLY;
2317 IoIFP(io) = fp = tmpfp;
2318 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2323 #ifdef MACOS_TRADITIONAL
2324 sv_setpv(tmpcmd, "glob ");
2325 sv_catsv(tmpcmd, tmpglob);
2326 sv_catpv(tmpcmd, " |");
2330 sv_setpv(tmpcmd, "for a in ");
2331 sv_catsv(tmpcmd, tmpglob);
2332 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2335 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2336 sv_catsv(tmpcmd, tmpglob);
2338 sv_setpv(tmpcmd, "perlglob ");
2339 sv_catsv(tmpcmd, tmpglob);
2340 sv_catpv(tmpcmd, " |");
2345 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2346 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2347 sv_catsv(tmpcmd, tmpglob);
2348 sv_catpv(tmpcmd, "' 2>/dev/null |");
2350 sv_setpv(tmpcmd, "echo ");
2351 sv_catsv(tmpcmd, tmpglob);
2353 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2355 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2358 #endif /* !DOSISH */
2359 #endif /* MACOS_TRADITIONAL */
2360 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2361 FALSE, O_RDONLY, 0, Nullfp);