3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 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
54 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
55 int rawmode, int rawperm, PerlIO *supplied_fp)
57 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
58 supplied_fp, (SV **) NULL, 0);
62 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
63 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
66 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
67 supplied_fp, &svs, 1);
71 Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
72 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
75 register IO *io = GvIOn(gv);
76 PerlIO *saveifp = Nullfp;
77 PerlIO *saveofp = Nullfp;
79 char savetype = IoTYPE_CLOSED;
84 bool was_fdopen = FALSE;
85 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
87 char mode[8]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
90 Zero(mode,sizeof(mode),char);
91 PL_forkprocess = 1; /* assume true if no fork */
93 /* Collect default raw/crlf info from the op */
94 if (PL_op && PL_op->op_type == OP_OPEN) {
95 /* set up IO layers */
96 U8 flags = PL_op->op_private;
97 in_raw = (flags & OPpOPEN_IN_RAW);
98 in_crlf = (flags & OPpOPEN_IN_CRLF);
99 out_raw = (flags & OPpOPEN_OUT_RAW);
100 out_crlf = (flags & OPpOPEN_OUT_CRLF);
103 /* If currently open - close before we re-open */
105 fd = PerlIO_fileno(IoIFP(io));
106 if (IoTYPE(io) == IoTYPE_STD) {
107 /* This is a clone of one of STD* handles */
110 else if (fd >= 0 && fd <= PL_maxsysfd) {
111 /* This is one of the original STD* handles */
114 savetype = IoTYPE(io);
118 else if (IoTYPE(io) == IoTYPE_PIPE)
119 result = PerlProc_pclose(IoIFP(io));
120 else if (IoIFP(io) != IoOFP(io)) {
122 result = PerlIO_close(IoOFP(io));
123 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
126 result = PerlIO_close(IoIFP(io));
129 result = PerlIO_close(IoIFP(io));
130 if (result == EOF && fd > PL_maxsysfd) {
131 /* Why is this not Perl_warn*() call ? */
132 PerlIO_printf(Perl_error_log,
133 "Warning: unable to close filehandle %s properly.\n",
136 IoOFP(io) = IoIFP(io) = Nullfp;
140 /* sysopen style args, i.e. integer mode and permissions */
144 #ifdef O_APPEND /* Not fully portable. */
147 #ifdef O_TRUNC /* Not fully portable. */
152 O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
156 Perl_croak(aTHX_ "panic: sysopen with multiple args");
164 It might be (in OS/390 and Mac OS Classic it is)
170 This means that simple & with O_RDWR would look
171 like O_RDONLY is present. Therefore we have to
174 if ((ismodifying = (rawmode & modifyingmode))) {
175 if ((ismodifying & O_WRONLY) == O_WRONLY ||
176 (ismodifying & O_RDWR) == O_RDWR ||
177 (ismodifying & (O_CREAT|appendtrunc)))
178 TAINT_PROPER("sysopen");
180 mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */
182 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
183 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
186 IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
188 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
192 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
195 /* Regular (non-sys) open */
200 PerlIO *that_fp = NULL;
202 type = savepvn(name, len);
206 /* Lose leading and trailing white space */
208 for (; isSPACE(*type); type++) ;
209 while (tend > type && isSPACE(tend[-1]))
213 /* New style explicit name, type is just mode and layer info */
216 if (SvROK(*svp) && !strchr(name,'&')) {
218 Perl_warner(aTHX_ packWARN(WARN_IO),
219 "Can't open a reference");
220 SETERRNO(EINVAL, LIB_INVARG);
223 #endif /* USE_STDIO */
224 name = SvOK(*svp) ? SvPV(*svp, l) : "";
226 name = savepvn(name, len);
234 if ((*type == IoTYPE_RDWR) && /* scary */
235 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
236 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
237 TAINT_PROPER("open");
242 if (*type == IoTYPE_PIPE) {
244 if (type[1] != IoTYPE_STD) {
246 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
251 for (type++; isSPACE(*type); type++) ;
257 /* command is missing 19990114 */
258 if (ckWARN(WARN_PIPE))
259 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
263 if (strNE(name,"-") || num_svs)
265 TAINT_PROPER("piped open");
266 if (!num_svs && name[len-1] == '|') {
268 if (ckWARN(WARN_PIPE))
269 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
278 fp = PerlProc_popen_list(mode, num_svs, svp);
281 fp = PerlProc_popen(name,mode);
285 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
291 else if (*type == IoTYPE_WRONLY) {
292 TAINT_PROPER("open");
294 if (*type == IoTYPE_WRONLY) {
295 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
296 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
311 dodup = PERLIO_DUP_FD;
317 if (!num_svs && !*type && supplied_fp) {
318 /* "<+&" etc. is used by typemaps */
323 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
326 for (; isSPACE(*type); type++) ;
327 if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) {
331 else if (isDIGIT(*type)) {
337 thatio = sv_2io(*svp);
341 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
342 thatio = GvIO(thatgv);
346 SETERRNO(EINVAL,SS_IVCHAN);
350 if ((that_fp = IoIFP(thatio))) {
351 /* Flush stdio buffer before dup. --mjd
352 * Unfortunately SEEK_CURing 0 seems to
353 * be optimized away on most platforms;
354 * only Solaris and Linux seem to flush
357 /* sfio fails to clear error on next
358 sfwrite, contrary to documentation.
360 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
361 PerlIO_clearerr(that_fp);
363 /* On the other hand, do all platforms
364 * take gracefully to flushing a read-only
365 * filehandle? Perhaps we should do
366 * fsetpos(src)+fgetpos(dst)? --nik */
367 PerlIO_flush(that_fp);
368 fd = PerlIO_fileno(that_fp);
369 /* When dup()ing STDIN, STDOUT or STDERR
370 * explicitly set appropriate access mode */
371 if (that_fp == PerlIO_stdout()
372 || that_fp == PerlIO_stderr())
373 IoTYPE(io) = IoTYPE_WRONLY;
374 else if (that_fp == PerlIO_stdin())
375 IoTYPE(io) = IoTYPE_RDONLY;
376 /* When dup()ing a socket, say result is
378 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
379 IoTYPE(io) = IoTYPE_SOCKET;
387 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
391 fd = PerlLIO_dup(fd);
394 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
403 for (; isSPACE(*type); type++) ;
404 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
407 fp = PerlIO_stdout();
408 IoTYPE(io) = IoTYPE_STD;
410 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
415 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
420 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
423 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
424 goto unknown_open_mode;
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 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
457 goto unknown_open_mode;
458 } /* IoTYPE_RDONLY */
459 else if ((num_svs && /* '-|...' or '...|' */
460 type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
461 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
463 type += 2; /* skip over '-|' */
467 while (tend > type && isSPACE(tend[-1]))
470 for (; isSPACE(*type); type++) ;
475 /* command is missing 19990114 */
476 if (ckWARN(WARN_PIPE))
477 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
481 if (strNE(name,"-") || num_svs)
483 TAINT_PROPER("piped open");
490 fp = PerlProc_popen_list(mode,num_svs,svp);
493 fp = PerlProc_popen(name,mode);
495 IoTYPE(io) = IoTYPE_PIPE;
497 for (; isSPACE(*type); type++) ;
499 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
505 else { /* layer(Args) */
507 goto unknown_open_mode;
509 IoTYPE(io) = IoTYPE_RDONLY;
511 for (; isSPACE(*name); name++) ;
517 if (strEQ(name,"-")) {
519 IoTYPE(io) = IoTYPE_STD;
523 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
528 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
533 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
534 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
538 if (ckWARN(WARN_IO)) {
539 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
540 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
541 Perl_warner(aTHX_ packWARN(WARN_IO),
542 "Filehandle STD%s reopened as %s only for input",
543 ((fp == PerlIO_stdout()) ? "OUT" : "ERR"),
546 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
547 Perl_warner(aTHX_ packWARN(WARN_IO),
548 "Filehandle STDIN reopened as %s only for output",
553 fd = PerlIO_fileno(fp);
554 /* If there is no fd (e.g. PerlIO::scalar) assume it isn't a
555 * socket - this covers PerlIO::scalar - otherwise unless we "know" the
556 * type probe for socket-ness.
558 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
559 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
560 /* If PerlIO claims to have fd we had better be able to fstat() it. */
561 (void) PerlIO_close(fp);
565 if (S_ISSOCK(PL_statbuf.st_mode))
566 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
570 !(PL_statbuf.st_mode & S_IFMT)
574 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
575 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
576 ) { /* on OS's that return 0 on fstat()ed pipe */
578 Sock_size_t buflen = sizeof tmpbuf;
579 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
580 || errno != ENOTSOCK)
581 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
582 /* but some return 0 for streams too, sigh */
584 #endif /* HAS_SOCKET */
585 #endif /* !PERL_MICRO */
589 * If this is a standard handle we discard all the layer stuff
590 * and just dup the fd into whatever was on the handle before !
593 if (saveifp) { /* must use old fp? */
594 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
595 then dup the new fileno down
598 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
599 if (saveofp != saveifp) { /* was a socket? */
600 PerlIO_close(saveofp);
604 /* Still a small can-of-worms here if (say) PerlIO::scalar
605 is assigned to (say) STDOUT - for now let dup2() fail
606 and provide the error
608 if (PerlLIO_dup2(fd, savefd) < 0) {
609 (void)PerlIO_close(fp);
613 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
614 char newname[FILENAME_MAX+1];
615 if (PerlIO_getname(fp, newname)) {
616 if (fd == PerlIO_fileno(PerlIO_stdout()))
617 Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
618 if (fd == PerlIO_fileno(PerlIO_stderr()))
619 Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
625 /* PL_fdpid isn't used on Windows, so avoid this useless work.
626 * XXX Probably the same for a lot of other places. */
632 sv = *av_fetch(PL_fdpid,fd,TRUE);
633 (void)SvUPGRADE(sv, SVt_IV);
636 sv = *av_fetch(PL_fdpid,savefd,TRUE);
637 (void)SvUPGRADE(sv, SVt_IV);
644 /* need to close fp without closing underlying fd */
645 int ofd = PerlIO_fileno(fp);
646 int dupfd = PerlLIO_dup(ofd);
647 #if defined(HAS_FCNTL) && defined(F_SETFD)
648 /* Assume if we have F_SETFD we have F_GETFD */
649 int coe = fcntl(ofd,F_GETFD);
652 PerlLIO_dup2(dupfd,ofd);
653 #if defined(HAS_FCNTL) && defined(F_SETFD)
654 /* The dup trick has lost close-on-exec on ofd */
655 fcntl(ofd,F_SETFD, coe);
657 PerlLIO_close(dupfd);
664 fd = PerlIO_fileno(fp);
666 #if defined(HAS_FCNTL) && defined(F_SETFD)
668 int save_errno = errno;
669 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
675 IoFLAGS(io) &= ~IOf_NOLINE;
677 if (IoTYPE(io) == IoTYPE_SOCKET
678 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
680 if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC)
683 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,svp))) {
697 IoTYPE(io) = savetype;
702 Perl_nextargv(pTHX_ register GV *gv)
705 #ifndef FLEXFILENAMES
714 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
715 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
716 IoFLAGS(io) &= ~IOf_START;
718 if (!PL_argvout_stack)
719 PL_argvout_stack = newAV();
720 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
723 if (PL_filemode & (S_ISUID|S_ISGID)) {
724 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
727 (void)fchmod(PL_lastfd,PL_filemode);
729 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
736 while (av_len(GvAV(gv)) >= 0) {
738 sv = av_shift(GvAV(gv));
740 sv_setsv(GvSV(gv),sv);
741 SvSETMAGIC(GvSV(gv));
742 PL_oldname = SvPVx(GvSV(gv), oldlen);
743 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
745 TAINT_PROPER("inplace open");
746 if (oldlen == 1 && *PL_oldname == '-') {
747 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
748 return IoIFP(GvIOp(gv));
750 #ifndef FLEXFILENAMES
751 filedev = PL_statbuf.st_dev;
752 fileino = PL_statbuf.st_ino;
754 PL_filemode = PL_statbuf.st_mode;
755 fileuid = PL_statbuf.st_uid;
756 filegid = PL_statbuf.st_gid;
757 if (!S_ISREG(PL_filemode)) {
758 if (ckWARN_d(WARN_INPLACE))
759 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
760 "Can't do inplace edit: %s is not a regular file",
766 char *star = strchr(PL_inplace, '*');
768 char *begin = PL_inplace;
769 sv_setpvn(sv, "", 0);
771 sv_catpvn(sv, begin, star - begin);
772 sv_catpvn(sv, PL_oldname, oldlen);
774 } while ((star = strchr(begin, '*')));
779 sv_catpv(sv,PL_inplace);
781 #ifndef FLEXFILENAMES
782 if ((PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
783 && PL_statbuf.st_dev == filedev
784 && PL_statbuf.st_ino == fileino)
786 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
790 if (ckWARN_d(WARN_INPLACE))
791 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
792 "Can't do inplace edit: %"SVf" would not be unique",
799 #if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
800 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
801 if (ckWARN_d(WARN_INPLACE))
802 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
803 "Can't rename %s to %"SVf": %s, skipping file",
804 PL_oldname, sv, Strerror(errno) );
810 (void)PerlLIO_unlink(SvPVX(sv));
811 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
812 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
815 (void)UNLINK(SvPVX(sv));
816 if (link(PL_oldname,SvPVX(sv)) < 0) {
817 if (ckWARN_d(WARN_INPLACE))
818 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
819 "Can't rename %s to %"SVf": %s, skipping file",
820 PL_oldname, sv, Strerror(errno) );
824 (void)UNLINK(PL_oldname);
828 #if !defined(DOSISH) && !defined(AMIGAOS)
829 # ifndef VMS /* Don't delete; use automatic file versioning */
830 if (UNLINK(PL_oldname) < 0) {
831 if (ckWARN_d(WARN_INPLACE))
832 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
833 "Can't remove %s: %s, skipping file",
834 PL_oldname, Strerror(errno) );
840 Perl_croak(aTHX_ "Can't do inplace edit without backup");
844 sv_setpvn(sv,">",!PL_inplace);
845 sv_catpvn(sv,PL_oldname,oldlen);
846 SETERRNO(0,0); /* in case sprintf set errno */
848 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
849 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
851 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
852 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
855 if (ckWARN_d(WARN_INPLACE))
856 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
857 PL_oldname, Strerror(errno) );
861 setdefout(PL_argvoutgv);
862 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
863 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
865 (void)fchmod(PL_lastfd,PL_filemode);
867 # if !(defined(WIN32) && defined(__BORLANDC__))
868 /* Borland runtime creates a readonly file! */
869 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
872 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
874 (void)fchown(PL_lastfd,fileuid,filegid);
877 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
882 return IoIFP(GvIOp(gv));
885 if (ckWARN_d(WARN_INPLACE)) {
887 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
888 && !S_ISREG(PL_statbuf.st_mode))
890 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
891 "Can't do inplace edit: %s is not a regular file",
895 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
896 PL_oldname, Strerror(eno));
900 if (io && (IoFLAGS(io) & IOf_ARGV))
901 IoFLAGS(io) |= IOf_START;
903 (void)do_close(PL_argvoutgv,FALSE);
904 if (io && (IoFLAGS(io) & IOf_ARGV)
905 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
907 GV *oldout = (GV*)av_pop(PL_argvout_stack);
909 SvREFCNT_dec(oldout);
912 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
919 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
938 if (PerlProc_pipe(fd) < 0)
940 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
941 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
942 IoOFP(rstio) = IoIFP(rstio);
943 IoIFP(wstio) = IoOFP(wstio);
944 IoTYPE(rstio) = IoTYPE_RDONLY;
945 IoTYPE(wstio) = IoTYPE_WRONLY;
946 if (!IoIFP(rstio) || !IoOFP(wstio)) {
947 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
948 else PerlLIO_close(fd[0]);
949 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
950 else PerlLIO_close(fd[1]);
954 sv_setsv(sv,&PL_sv_yes);
958 sv_setsv(sv,&PL_sv_undef);
963 /* explicit renamed to avoid C++ conflict -- kja */
965 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
972 if (!gv || SvTYPE(gv) != SVt_PVGV) {
974 SETERRNO(EBADF,SS_IVCHAN);
978 if (!io) { /* never opened */
980 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
981 report_evil_fh(gv, io, PL_op->op_type);
982 SETERRNO(EBADF,SS_IVCHAN);
986 retval = io_close(io, not_implicit);
990 IoLINES_LEFT(io) = IoPAGE_LEN(io);
992 IoTYPE(io) = IoTYPE_CLOSED;
997 Perl_io_close(pTHX_ IO *io, bool not_implicit)
1003 if (IoTYPE(io) == IoTYPE_PIPE) {
1004 status = PerlProc_pclose(IoIFP(io));
1006 STATUS_NATIVE_SET(status);
1007 retval = (STATUS_POSIX == 0);
1010 retval = (status != -1);
1013 else if (IoTYPE(io) == IoTYPE_STD)
1016 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
1017 retval = (PerlIO_close(IoOFP(io)) != EOF);
1018 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
1021 retval = (PerlIO_close(IoIFP(io)) != EOF);
1023 IoOFP(io) = IoIFP(io) = Nullfp;
1025 else if (not_implicit) {
1026 SETERRNO(EBADF,SS_IVCHAN);
1033 Perl_do_eof(pTHX_ GV *gv)
1042 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
1043 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1048 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
1049 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
1050 return FALSE; /* this is the most usual case */
1053 saverrno = errno; /* getc and ungetc can stomp on errno */
1054 ch = PerlIO_getc(IoIFP(io));
1056 (void)PerlIO_ungetc(IoIFP(io),ch);
1062 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
1063 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1064 PerlIO_set_cnt(IoIFP(io),-1);
1066 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
1067 if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
1071 return TRUE; /* normal fp, definitely end of file */
1077 Perl_do_tell(pTHX_ GV *gv)
1079 register IO *io = 0;
1080 register PerlIO *fp;
1082 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1083 #ifdef ULTRIX_STDIO_BOTCH
1085 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1087 return PerlIO_tell(fp);
1089 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1090 report_evil_fh(gv, io, PL_op->op_type);
1091 SETERRNO(EBADF,RMS_IFI);
1096 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1098 register IO *io = 0;
1099 register PerlIO *fp;
1101 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1102 #ifdef ULTRIX_STDIO_BOTCH
1104 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1106 return PerlIO_seek(fp, pos, whence) >= 0;
1108 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1109 report_evil_fh(gv, io, PL_op->op_type);
1110 SETERRNO(EBADF,RMS_IFI);
1115 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1117 register IO *io = 0;
1118 register PerlIO *fp;
1120 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1121 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1122 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1123 report_evil_fh(gv, io, PL_op->op_type);
1124 SETERRNO(EBADF,RMS_IFI);
1129 Perl_mode_from_discipline(pTHX_ SV *discp)
1131 int mode = O_BINARY;
1134 char *s = SvPV(discp,len);
1139 if (len > 3 && strnEQ(s+1, "raw", 3)
1140 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1149 if (len > 4 && strnEQ(s+1, "crlf", 4)
1150 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1159 goto fail_discipline;
1162 else if (isSPACE(*s)) {
1169 end = strchr(s+1, ':');
1172 #ifndef PERLIO_LAYERS
1173 Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s);
1184 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1186 /* The old body of this is now in non-LAYER part of perlio.c
1187 * This is a stub for any XS code which might have been calling it.
1189 char *name = ":raw";
1190 #ifdef PERLIO_USING_CRLF
1191 if (!(mode & O_BINARY))
1194 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1197 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1198 /* code courtesy of William Kucharski */
1201 I32 my_chsize(fd, length)
1202 I32 fd; /* file descriptor */
1203 Off_t length; /* length to set file to */
1208 if (PerlLIO_fstat(fd, &filebuf) < 0)
1211 if (filebuf.st_size < length) {
1213 /* extend file length */
1215 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1218 /* write a "0" byte */
1220 if ((PerlLIO_write(fd, "", 1)) != 1)
1224 /* truncate length */
1228 fl.l_start = length;
1229 fl.l_type = F_WRLCK; /* write lock on file space */
1232 * This relies on the UNDOCUMENTED F_FREESP argument to
1233 * fcntl(2), which truncates the file so that it ends at the
1234 * position indicated by fl.l_start.
1236 * Will minor miracles never cease?
1239 if (fcntl(fd, F_FREESP, &fl) < 0)
1246 #endif /* F_FREESP */
1249 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1251 register char *tmps;
1254 /* assuming fp is checked earlier */
1260 if (SvIOK(sv) && SvIVX(sv) != 0) {
1261 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1262 return !PerlIO_error(fp);
1264 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1265 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1266 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1267 return !PerlIO_error(fp);
1270 switch (SvTYPE(sv)) {
1272 if (ckWARN(WARN_UNINITIALIZED))
1280 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1282 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1283 return !PerlIO_error(fp);
1287 if (PerlIO_isutf8(fp)) {
1289 sv_utf8_upgrade_flags(sv = sv_mortalcopy(sv),
1290 SV_GMAGIC|SV_UTF8_NO_ENCODING);
1292 else if (DO_UTF8(sv)) {
1293 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
1294 && ckWARN_d(WARN_UTF8))
1296 Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
1299 tmps = SvPV(sv, len);
1302 /* To detect whether the process is about to overstep its
1303 * filesize limit we would need getrlimit(). We could then
1304 * also transparently raise the limit with setrlimit() --
1305 * but only until the system hard limit/the filesystem limit,
1306 * at which we would get EPERM. Note that when using buffered
1307 * io the write failure can be delayed until the flush/close. --jhi */
1308 if (len && (PerlIO_write(fp,tmps,len) == 0))
1310 return !PerlIO_error(fp);
1320 if (PL_op->op_flags & OPf_REF) {
1325 if (io && IoIFP(io)) {
1327 sv_setpv(PL_statname,"");
1328 PL_laststype = OP_STAT;
1329 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1333 return PL_laststatval;
1334 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1335 report_evil_fh(gv, io, PL_op->op_type);
1337 sv_setpv(PL_statname,"");
1338 return (PL_laststatval = -1);
1341 else if (PL_op->op_private & OPpFT_STACKED) {
1342 return PL_laststatval;
1349 if (SvTYPE(sv) == SVt_PVGV) {
1353 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1360 sv_setpvn(PL_statname, s, len);
1361 s = SvPVX(PL_statname); /* s now NUL-terminated */
1362 PL_laststype = OP_STAT;
1363 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1364 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1365 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
1366 return PL_laststatval;
1370 static char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
1378 if (PL_op->op_flags & OPf_REF) {
1380 if (cGVOP_gv == PL_defgv) {
1381 if (PL_laststype != OP_LSTAT)
1382 Perl_croak(aTHX_ no_prev_lstat);
1383 return PL_laststatval;
1385 if (ckWARN(WARN_IO)) {
1386 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1388 return (PL_laststatval = -1);
1391 else if (ckWARN(WARN_IO) && PL_laststype != OP_LSTAT
1392 && (PL_op->op_private & OPpFT_STACKED))
1393 Perl_croak(aTHX_ no_prev_lstat);
1395 PL_laststype = OP_LSTAT;
1399 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
1400 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1401 GvENAME((GV*) SvRV(sv)));
1402 return (PL_laststatval = -1);
1404 sv_setpv(PL_statname,SvPV(sv, n_a));
1405 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1406 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1407 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
1408 return PL_laststatval;
1413 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1415 return do_aexec5(really, mark, sp, 0, 0);
1420 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1421 int fd, int do_report)
1423 #ifdef MACOS_TRADITIONAL
1424 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1427 char *tmps = Nullch;
1431 New(401,PL_Argv, sp - mark + 1, char*);
1433 while (++mark <= sp) {
1435 *a++ = SvPVx(*mark, n_a);
1441 tmps = SvPV(really, n_a);
1442 if ((!really && *PL_Argv[0] != '/') ||
1443 (really && *tmps != '/')) /* will execvp use PATH? */
1444 TAINT_ENV(); /* testing IFS here is overkill, probably */
1446 if (really && *tmps)
1447 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1449 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1451 if (ckWARN(WARN_EXEC))
1452 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1453 (really ? tmps : PL_Argv[0]), Strerror(errno));
1457 PerlLIO_write(fd, (void*)&e, sizeof(int));
1467 Perl_do_execfree(pTHX)
1471 PL_Argv = Null(char **);
1479 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1482 Perl_do_exec(pTHX_ char *cmd)
1484 return do_exec3(cmd,0,0);
1488 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1493 while (*cmd && isSPACE(*cmd))
1496 /* save an extra exec if possible */
1501 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1502 strnEQ(cmd+PL_cshlen," -c",3)) {
1504 s = cmd+PL_cshlen+3;
1518 if (s[-1] == '\'') {
1521 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1531 /* see if there are shell metacharacters in it */
1533 if (*cmd == '.' && isSPACE(cmd[1]))
1536 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1539 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1543 for (s = cmd; *s; s++) {
1544 if (*s != ' ' && !isALPHA(*s) &&
1545 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1546 if (*s == '\n' && !s[1]) {
1550 /* handle the 2>&1 construct at the end */
1551 if (*s == '>' && s[1] == '&' && s[2] == '1'
1552 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1553 && (!s[3] || isSPACE(s[3])))
1557 while (*t && isSPACE(*t))
1559 if (!*t && (PerlLIO_dup2(1,2) != -1)) {
1566 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1572 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1573 PL_Cmd = savepvn(cmd, s-cmd);
1575 for (s = PL_Cmd; *s;) {
1576 while (*s && isSPACE(*s)) s++;
1579 while (*s && !isSPACE(*s)) s++;
1586 PerlProc_execvp(PL_Argv[0],PL_Argv);
1588 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1595 if (ckWARN(WARN_EXEC))
1596 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1597 PL_Argv[0], Strerror(errno));
1599 PerlLIO_write(fd, (void*)&e, sizeof(int));
1608 #endif /* OS2 || WIN32 */
1611 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1615 register I32 tot = 0;
1618 SV **oldmark = mark;
1621 #define APPLY_TAINT_PROPER() \
1623 if (PL_tainted) { TAINT_PROPER(what); } \
1626 /* This is a first heuristic; it doesn't catch tainting magic. */
1628 while (++mark <= sp) {
1629 if (SvTAINTED(*mark)) {
1639 APPLY_TAINT_PROPER();
1642 APPLY_TAINT_PROPER();
1644 while (++mark <= sp) {
1645 char *name = SvPVx(*mark, n_a);
1646 APPLY_TAINT_PROPER();
1647 if (PerlLIO_chmod(name, val))
1655 APPLY_TAINT_PROPER();
1656 if (sp - mark > 2) {
1657 val = SvIVx(*++mark);
1658 val2 = SvIVx(*++mark);
1659 APPLY_TAINT_PROPER();
1661 while (++mark <= sp) {
1662 char *name = SvPVx(*mark, n_a);
1663 APPLY_TAINT_PROPER();
1664 if (PerlLIO_chown(name, val, val2))
1671 XXX Should we make lchown() directly available from perl?
1672 For now, we'll let Configure test for HAS_LCHOWN, but do
1673 nothing in the core.
1679 APPLY_TAINT_PROPER();
1682 s = SvPVx(*++mark, n_a);
1684 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1686 if ((val = whichsig(s)) < 0)
1687 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1691 APPLY_TAINT_PROPER();
1694 /* kill() doesn't do process groups (job trees?) under VMS */
1695 if (val < 0) val = -val;
1696 if (val == SIGKILL) {
1697 # include <starlet.h>
1698 /* Use native sys$delprc() to insure that target process is
1699 * deleted; supervisor-mode images don't pay attention to
1700 * CRTL's emulation of Unix-style signals and kill()
1702 while (++mark <= sp) {
1703 I32 proc = SvIVx(*mark);
1704 register unsigned long int __vmssts;
1705 APPLY_TAINT_PROPER();
1706 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1710 case SS$_NOSUCHNODE:
1711 SETERRNO(ESRCH,__vmssts);
1714 SETERRNO(EPERM,__vmssts);
1717 SETERRNO(EVMSERR,__vmssts);
1726 while (++mark <= sp) {
1727 I32 proc = SvIVx(*mark);
1728 APPLY_TAINT_PROPER();
1730 if (PerlProc_killpg(proc,val)) /* BSD */
1732 if (PerlProc_kill(-proc,val)) /* SYSV */
1738 while (++mark <= sp) {
1739 I32 proc = SvIVx(*mark);
1740 APPLY_TAINT_PROPER();
1741 if (PerlProc_kill(proc, val))
1749 APPLY_TAINT_PROPER();
1751 while (++mark <= sp) {
1752 s = SvPVx(*mark, n_a);
1753 APPLY_TAINT_PROPER();
1754 if (PL_euid || PL_unsafe) {
1758 else { /* don't let root wipe out directories without -U */
1759 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1771 APPLY_TAINT_PROPER();
1772 if (sp - mark > 2) {
1773 #if defined(I_UTIME) || defined(VMS)
1774 struct utimbuf utbuf;
1782 SV* accessed = *++mark;
1783 SV* modified = *++mark;
1784 void * utbufp = &utbuf;
1786 /* Be like C, and if both times are undefined, let the C
1787 * library figure out what to do. This usually means
1788 * "current time". */
1790 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1793 Zero(&utbuf, sizeof utbuf, char);
1795 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1796 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1798 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1799 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1802 APPLY_TAINT_PROPER();
1804 while (++mark <= sp) {
1805 char *name = SvPVx(*mark, n_a);
1806 APPLY_TAINT_PROPER();
1807 if (PerlLIO_utime(name, utbufp))
1818 #undef APPLY_TAINT_PROPER
1821 /* Do the permissions allow some operation? Assumes statcache already set. */
1822 #ifndef VMS /* VMS' cando is in vms.c */
1824 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1825 /* Note: we use `effective' both for uids and gids.
1826 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1829 /* [Comments and code from Len Reed]
1830 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1831 * to write-protected files. The execute permission bit is set
1832 * by the Miscrosoft C library stat() function for the following:
1837 * All files and directories are readable.
1838 * Directories and special files, e.g. "CON", cannot be
1840 * [Comment by Tom Dinger -- a directory can have the write-protect
1841 * bit set in the file system, but DOS permits changes to
1842 * the directory anyway. In addition, all bets are off
1843 * here for networked software, such as Novell and
1847 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1848 * too so it will actually look into the files for magic numbers
1850 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1852 #else /* ! DOSISH */
1853 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1854 if (mode == S_IXUSR) {
1855 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1859 return TRUE; /* root reads and writes anything */
1862 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1863 if (statbufp->st_mode & mode)
1864 return TRUE; /* ok as "user" */
1866 else if (ingroup(statbufp->st_gid,effective)) {
1867 if (statbufp->st_mode & mode >> 3)
1868 return TRUE; /* ok as "group" */
1870 else if (statbufp->st_mode & mode >> 6)
1871 return TRUE; /* ok as "other" */
1873 #endif /* ! DOSISH */
1878 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1880 #ifdef MACOS_TRADITIONAL
1881 /* This is simply not correct for AppleShare, but fix it yerself. */
1884 if (testgid == (effective ? PL_egid : PL_gid))
1886 #ifdef HAS_GETGROUPS
1891 Groups_t gary[NGROUPS];
1894 anum = getgroups(NGROUPS,gary);
1896 if (gary[anum] == testgid)
1904 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1907 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1912 key = (key_t)SvNVx(*++mark);
1913 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1914 flags = SvIVx(*++mark);
1920 return msgget(key, flags);
1924 return semget(key, n, flags);
1928 return shmget(key, n, flags);
1930 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1932 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1935 return -1; /* should never happen */
1939 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1943 I32 id, n, cmd, infosize, getinfo;
1946 id = SvIVx(*++mark);
1947 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1948 cmd = SvIVx(*++mark);
1951 getinfo = (cmd == IPC_STAT);
1957 if (cmd == IPC_STAT || cmd == IPC_SET)
1958 infosize = sizeof(struct msqid_ds);
1963 if (cmd == IPC_STAT || cmd == IPC_SET)
1964 infosize = sizeof(struct shmid_ds);
1970 if (cmd == IPC_STAT || cmd == IPC_SET)
1971 infosize = sizeof(struct semid_ds);
1972 else if (cmd == GETALL || cmd == SETALL)
1974 struct semid_ds semds;
1976 #ifdef EXTRA_F_IN_SEMUN_BUF
1977 semun.buff = &semds;
1981 getinfo = (cmd == GETALL);
1982 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1984 infosize = semds.sem_nsems * sizeof(short);
1985 /* "short" is technically wrong but much more portable
1986 than guessing about u_?short(_t)? */
1989 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1993 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1995 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2004 SvPV_force(astr, len);
2005 a = SvGROW(astr, infosize+1);
2009 a = SvPV(astr, len);
2010 if (len != infosize)
2011 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
2020 a = INT2PTR(char *,i); /* ouch */
2027 ret = msgctl(id, cmd, (struct msqid_ds *)a);
2033 union semun unsemds;
2035 #ifdef EXTRA_F_IN_SEMUN_BUF
2036 unsemds.buff = (struct semid_ds *)a;
2038 unsemds.buf = (struct semid_ds *)a;
2040 ret = Semctl(id, n, cmd, unsemds);
2042 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2049 ret = shmctl(id, cmd, (struct shmid_ds *)a);
2053 if (getinfo && ret >= 0) {
2054 SvCUR_set(astr, infosize);
2055 *SvEND(astr) = '\0';
2062 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
2067 I32 id, msize, flags;
2070 id = SvIVx(*++mark);
2072 flags = SvIVx(*++mark);
2073 mbuf = SvPV(mstr, len);
2074 if ((msize = len - sizeof(long)) < 0)
2075 Perl_croak(aTHX_ "Arg too short for msgsnd");
2077 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
2079 Perl_croak(aTHX_ "msgsnd not implemented");
2084 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
2090 I32 id, msize, flags, ret;
2093 id = SvIVx(*++mark);
2095 /* suppress warning when reading into undef var --jhi */
2097 sv_setpvn(mstr, "", 0);
2098 msize = SvIVx(*++mark);
2099 mtype = (long)SvIVx(*++mark);
2100 flags = SvIVx(*++mark);
2101 SvPV_force(mstr, len);
2102 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
2105 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
2107 SvCUR_set(mstr, sizeof(long)+ret);
2108 *SvEND(mstr) = '\0';
2109 #ifndef INCOMPLETE_TAINTS
2110 /* who knows who has been playing with this message? */
2116 Perl_croak(aTHX_ "msgrcv not implemented");
2121 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2129 id = SvIVx(*++mark);
2131 opbuf = SvPV(opstr, opsize);
2132 if (opsize < 3 * SHORTSIZE
2133 || (opsize % (3 * SHORTSIZE))) {
2134 SETERRNO(EINVAL,LIB_INVARG);
2138 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2140 int nsops = opsize / (3 * sizeof (short));
2142 short *ops = (short *) opbuf;
2144 struct sembuf *temps, *t;
2147 New (0, temps, nsops, struct sembuf);
2155 result = semop(id, temps, nsops);
2169 Perl_croak(aTHX_ "semop not implemented");
2174 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2179 I32 id, mpos, msize;
2181 struct shmid_ds shmds;
2183 id = SvIVx(*++mark);
2185 mpos = SvIVx(*++mark);
2186 msize = SvIVx(*++mark);
2188 if (shmctl(id, IPC_STAT, &shmds) == -1)
2190 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2191 SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */
2194 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2195 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2197 if (optype == OP_SHMREAD) {
2198 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2200 sv_setpvn(mstr, "", 0);
2201 SvPV_force(mstr, len);
2202 mbuf = SvGROW(mstr, msize+1);
2204 Copy(shm + mpos, mbuf, msize, char);
2205 SvCUR_set(mstr, msize);
2206 *SvEND(mstr) = '\0';
2208 #ifndef INCOMPLETE_TAINTS
2209 /* who knows who has been playing with this shared memory? */
2216 mbuf = SvPV(mstr, len);
2217 if ((n = len) > msize)
2219 Copy(mbuf, shm + mpos, n, char);
2221 memzero(shm + mpos + n, msize - n);
2225 Perl_croak(aTHX_ "shm I/O not implemented");
2229 #endif /* SYSV IPC */
2234 =for apidoc start_glob
2236 Function called by C<do_readline> to spawn a glob (or do the glob inside
2237 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2238 this glob starter is only used by miniperl during the build process.
2239 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2245 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2247 SV *tmpcmd = NEWSV(55, 0);
2251 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2252 /* since spawning off a process is a real performance hit */
2254 #include <descrip.h>
2255 #include <lib$routines.h>
2258 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2259 char vmsspec[NAM$C_MAXRSS+1];
2260 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2261 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2264 struct dsc$descriptor_s wilddsc
2265 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2266 struct dsc$descriptor_vs rsdsc
2267 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2268 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2270 /* We could find out if there's an explicit dev/dir or version
2271 by peeking into lib$find_file's internal context at
2272 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2273 but that's unsupported, so I don't want to do it now and
2274 have it bite someone in the future. */
2275 cp = SvPV(tmpglob,i);
2277 if (cp[i] == ';') hasver = 1;
2279 if (sts) hasver = 1;
2283 hasdir = isunix = 1;
2286 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2291 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2293 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2294 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2295 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2296 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2297 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2298 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
2299 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2300 &dfltdsc,NULL,NULL,NULL))&1)) {
2301 /* with varying string, 1st word of buffer contains result length */
2302 end = rstr + *((unsigned short int*)rslt);
2303 if (!hasver) while (*end != ';' && end > rstr) end--;
2304 *(end++) = '\n'; *end = '\0';
2305 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2307 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2312 while (*(--begin) != ']' && *begin != '>') ;
2315 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2317 if (cxt) (void)lib$find_file_end(&cxt);
2318 if (ok && sts != RMS$_NMF &&
2319 sts != RMS$_DNF && sts != RMS_FNF) ok = 0;
2322 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2324 PerlIO_close(tmpfp);
2328 PerlIO_rewind(tmpfp);
2329 IoTYPE(io) = IoTYPE_RDONLY;
2330 IoIFP(io) = fp = tmpfp;
2331 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2336 #ifdef MACOS_TRADITIONAL
2337 sv_setpv(tmpcmd, "glob ");
2338 sv_catsv(tmpcmd, tmpglob);
2339 sv_catpv(tmpcmd, " |");
2343 sv_setpv(tmpcmd, "for a in ");
2344 sv_catsv(tmpcmd, tmpglob);
2345 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2348 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2349 sv_catsv(tmpcmd, tmpglob);
2351 sv_setpv(tmpcmd, "perlglob ");
2352 sv_catsv(tmpcmd, tmpglob);
2353 sv_catpv(tmpcmd, " |");
2358 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2359 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2360 sv_catsv(tmpcmd, tmpglob);
2361 sv_catpv(tmpcmd, "' 2>/dev/null |");
2363 sv_setpv(tmpcmd, "echo ");
2364 sv_catsv(tmpcmd, tmpglob);
2366 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2368 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2371 #endif /* !DOSISH */
2372 #endif /* MACOS_TRADITIONAL */
2373 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2374 FALSE, O_RDONLY, 0, Nullfp);