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."
18 /* This file contains functions that do the actual I/O on behalf of ops.
19 * For example, pp_print() calls the do_print() function in this file for
20 * each argument needing printing.
24 #define PERL_IN_DOIO_C
27 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
36 # ifndef HAS_SHMAT_PROTOTYPE
37 extern Shmat_t shmat (int, char *, int);
43 # if defined(_MSC_VER) || defined(__MINGW32__)
44 # include <sys/utime.h>
51 # define OPEN_EXCL O_EXCL
59 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
60 int rawmode, int rawperm, PerlIO *supplied_fp)
62 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
63 supplied_fp, (SV **) NULL, 0);
67 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
68 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
71 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
72 supplied_fp, &svs, 1);
76 Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
77 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
80 register IO *io = GvIOn(gv);
81 PerlIO *saveifp = Nullfp;
82 PerlIO *saveofp = Nullfp;
84 char savetype = IoTYPE_CLOSED;
89 bool was_fdopen = FALSE;
90 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
92 char mode[8]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
95 Zero(mode,sizeof(mode),char);
96 PL_forkprocess = 1; /* assume true if no fork */
98 /* Collect default raw/crlf info from the op */
99 if (PL_op && PL_op->op_type == OP_OPEN) {
100 /* set up IO layers */
101 U8 flags = PL_op->op_private;
102 in_raw = (flags & OPpOPEN_IN_RAW);
103 in_crlf = (flags & OPpOPEN_IN_CRLF);
104 out_raw = (flags & OPpOPEN_OUT_RAW);
105 out_crlf = (flags & OPpOPEN_OUT_CRLF);
108 /* If currently open - close before we re-open */
110 fd = PerlIO_fileno(IoIFP(io));
111 if (IoTYPE(io) == IoTYPE_STD) {
112 /* This is a clone of one of STD* handles */
115 else if (fd >= 0 && fd <= PL_maxsysfd) {
116 /* This is one of the original STD* handles */
119 savetype = IoTYPE(io);
123 else if (IoTYPE(io) == IoTYPE_PIPE)
124 result = PerlProc_pclose(IoIFP(io));
125 else if (IoIFP(io) != IoOFP(io)) {
127 result = PerlIO_close(IoOFP(io));
128 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
131 result = PerlIO_close(IoIFP(io));
134 result = PerlIO_close(IoIFP(io));
135 if (result == EOF && fd > PL_maxsysfd) {
136 /* Why is this not Perl_warn*() call ? */
137 PerlIO_printf(Perl_error_log,
138 "Warning: unable to close filehandle %s properly.\n",
141 IoOFP(io) = IoIFP(io) = Nullfp;
145 /* sysopen style args, i.e. integer mode and permissions */
149 #ifdef O_APPEND /* Not fully portable. */
152 #ifdef O_TRUNC /* Not fully portable. */
157 O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
161 Perl_croak(aTHX_ "panic: sysopen with multiple args");
169 It might be (in OS/390 and Mac OS Classic it is)
175 This means that simple & with O_RDWR would look
176 like O_RDONLY is present. Therefore we have to
179 if ((ismodifying = (rawmode & modifyingmode))) {
180 if ((ismodifying & O_WRONLY) == O_WRONLY ||
181 (ismodifying & O_RDWR) == O_RDWR ||
182 (ismodifying & (O_CREAT|appendtrunc)))
183 TAINT_PROPER("sysopen");
185 mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */
187 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
188 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
191 IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
193 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
197 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
200 /* Regular (non-sys) open */
205 PerlIO *that_fp = NULL;
207 type = savepvn(name, len);
211 /* Lose leading and trailing white space */
213 for (; isSPACE(*type); type++) ;
214 while (tend > type && isSPACE(tend[-1]))
218 /* New style explicit name, type is just mode and layer info */
221 if (SvROK(*svp) && !strchr(name,'&')) {
223 Perl_warner(aTHX_ packWARN(WARN_IO),
224 "Can't open a reference");
225 SETERRNO(EINVAL, LIB_INVARG);
228 #endif /* USE_STDIO */
229 name = SvOK(*svp) ? SvPV(*svp, l) : "";
231 name = savepvn(name, len);
239 if ((*type == IoTYPE_RDWR) && /* scary */
240 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
241 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
242 TAINT_PROPER("open");
247 if (*type == IoTYPE_PIPE) {
249 if (type[1] != IoTYPE_STD) {
251 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
256 for (type++; isSPACE(*type); type++) ;
262 /* command is missing 19990114 */
263 if (ckWARN(WARN_PIPE))
264 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
268 if (strNE(name,"-") || num_svs)
270 TAINT_PROPER("piped open");
271 if (!num_svs && name[len-1] == '|') {
273 if (ckWARN(WARN_PIPE))
274 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
283 fp = PerlProc_popen_list(mode, num_svs, svp);
286 fp = PerlProc_popen(name,mode);
290 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
296 else if (*type == IoTYPE_WRONLY) {
297 TAINT_PROPER("open");
299 if (*type == IoTYPE_WRONLY) {
300 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
301 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
316 dodup = PERLIO_DUP_FD;
322 if (!num_svs && !*type && supplied_fp) {
323 /* "<+&" etc. is used by typemaps */
328 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
331 for (; isSPACE(*type); type++) ;
332 if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) {
336 else if (isDIGIT(*type)) {
342 thatio = sv_2io(*svp);
346 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
347 thatio = GvIO(thatgv);
351 SETERRNO(EINVAL,SS_IVCHAN);
355 if ((that_fp = IoIFP(thatio))) {
356 /* Flush stdio buffer before dup. --mjd
357 * Unfortunately SEEK_CURing 0 seems to
358 * be optimized away on most platforms;
359 * only Solaris and Linux seem to flush
362 /* sfio fails to clear error on next
363 sfwrite, contrary to documentation.
365 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
366 PerlIO_clearerr(that_fp);
368 /* On the other hand, do all platforms
369 * take gracefully to flushing a read-only
370 * filehandle? Perhaps we should do
371 * fsetpos(src)+fgetpos(dst)? --nik */
372 PerlIO_flush(that_fp);
373 fd = PerlIO_fileno(that_fp);
374 /* When dup()ing STDIN, STDOUT or STDERR
375 * explicitly set appropriate access mode */
376 if (that_fp == PerlIO_stdout()
377 || that_fp == PerlIO_stderr())
378 IoTYPE(io) = IoTYPE_WRONLY;
379 else if (that_fp == PerlIO_stdin())
380 IoTYPE(io) = IoTYPE_RDONLY;
381 /* When dup()ing a socket, say result is
383 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
384 IoTYPE(io) = IoTYPE_SOCKET;
392 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
396 fd = PerlLIO_dup(fd);
399 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
408 for (; isSPACE(*type); type++) ;
409 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
412 fp = PerlIO_stdout();
413 IoTYPE(io) = IoTYPE_STD;
415 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
420 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
425 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
428 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
429 goto unknown_open_mode;
430 } /* IoTYPE_WRONLY */
431 else if (*type == IoTYPE_RDONLY) {
433 for (type++; isSPACE(*type); type++) ;
443 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
447 IoTYPE(io) = IoTYPE_STD;
449 Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
454 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
459 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
461 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
462 goto unknown_open_mode;
463 } /* IoTYPE_RDONLY */
464 else if ((num_svs && /* '-|...' or '...|' */
465 type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
466 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
468 type += 2; /* skip over '-|' */
472 while (tend > type && isSPACE(tend[-1]))
475 for (; isSPACE(*type); type++) ;
480 /* command is missing 19990114 */
481 if (ckWARN(WARN_PIPE))
482 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
486 if (strNE(name,"-") || num_svs)
488 TAINT_PROPER("piped open");
495 fp = PerlProc_popen_list(mode,num_svs,svp);
498 fp = PerlProc_popen(name,mode);
500 IoTYPE(io) = IoTYPE_PIPE;
502 for (; isSPACE(*type); type++) ;
504 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
510 else { /* layer(Args) */
512 goto unknown_open_mode;
514 IoTYPE(io) = IoTYPE_RDONLY;
516 for (; isSPACE(*name); name++) ;
522 if (strEQ(name,"-")) {
524 IoTYPE(io) = IoTYPE_STD;
528 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
533 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
538 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
539 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
543 if (ckWARN(WARN_IO)) {
544 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
545 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
546 Perl_warner(aTHX_ packWARN(WARN_IO),
547 "Filehandle STD%s reopened as %s only for input",
548 ((fp == PerlIO_stdout()) ? "OUT" : "ERR"),
551 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
552 Perl_warner(aTHX_ packWARN(WARN_IO),
553 "Filehandle STDIN reopened as %s only for output",
558 fd = PerlIO_fileno(fp);
559 /* If there is no fd (e.g. PerlIO::scalar) assume it isn't a
560 * socket - this covers PerlIO::scalar - otherwise unless we "know" the
561 * type probe for socket-ness.
563 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
564 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
565 /* If PerlIO claims to have fd we had better be able to fstat() it. */
566 (void) PerlIO_close(fp);
570 if (S_ISSOCK(PL_statbuf.st_mode))
571 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
575 !(PL_statbuf.st_mode & S_IFMT)
579 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
580 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
581 ) { /* on OS's that return 0 on fstat()ed pipe */
583 Sock_size_t buflen = sizeof tmpbuf;
584 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
585 || errno != ENOTSOCK)
586 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
587 /* but some return 0 for streams too, sigh */
589 #endif /* HAS_SOCKET */
590 #endif /* !PERL_MICRO */
594 * If this is a standard handle we discard all the layer stuff
595 * and just dup the fd into whatever was on the handle before !
598 if (saveifp) { /* must use old fp? */
599 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
600 then dup the new fileno down
603 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
604 if (saveofp != saveifp) { /* was a socket? */
605 PerlIO_close(saveofp);
609 /* Still a small can-of-worms here if (say) PerlIO::scalar
610 is assigned to (say) STDOUT - for now let dup2() fail
611 and provide the error
613 if (PerlLIO_dup2(fd, savefd) < 0) {
614 (void)PerlIO_close(fp);
618 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
619 char newname[FILENAME_MAX+1];
620 if (PerlIO_getname(fp, newname)) {
621 if (fd == PerlIO_fileno(PerlIO_stdout()))
622 Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
623 if (fd == PerlIO_fileno(PerlIO_stderr()))
624 Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
630 /* PL_fdpid isn't used on Windows, so avoid this useless work.
631 * XXX Probably the same for a lot of other places. */
637 sv = *av_fetch(PL_fdpid,fd,TRUE);
638 (void)SvUPGRADE(sv, SVt_IV);
641 sv = *av_fetch(PL_fdpid,savefd,TRUE);
642 (void)SvUPGRADE(sv, SVt_IV);
649 /* need to close fp without closing underlying fd */
650 int ofd = PerlIO_fileno(fp);
651 int dupfd = PerlLIO_dup(ofd);
652 #if defined(HAS_FCNTL) && defined(F_SETFD)
653 /* Assume if we have F_SETFD we have F_GETFD */
654 int coe = fcntl(ofd,F_GETFD);
657 PerlLIO_dup2(dupfd,ofd);
658 #if defined(HAS_FCNTL) && defined(F_SETFD)
659 /* The dup trick has lost close-on-exec on ofd */
660 fcntl(ofd,F_SETFD, coe);
662 PerlLIO_close(dupfd);
669 fd = PerlIO_fileno(fp);
671 #if defined(HAS_FCNTL) && defined(F_SETFD)
673 int save_errno = errno;
674 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
680 IoFLAGS(io) &= ~IOf_NOLINE;
682 if (IoTYPE(io) == IoTYPE_SOCKET
683 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
685 if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC)
688 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,svp))) {
702 IoTYPE(io) = savetype;
707 Perl_nextargv(pTHX_ register GV *gv)
710 #ifndef FLEXFILENAMES
719 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
720 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
721 IoFLAGS(io) &= ~IOf_START;
723 if (!PL_argvout_stack)
724 PL_argvout_stack = newAV();
725 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
728 if (PL_filemode & (S_ISUID|S_ISGID)) {
729 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
732 (void)fchmod(PL_lastfd,PL_filemode);
734 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
741 while (av_len(GvAV(gv)) >= 0) {
743 sv = av_shift(GvAV(gv));
745 sv_setsv(GvSV(gv),sv);
746 SvSETMAGIC(GvSV(gv));
747 PL_oldname = SvPVx(GvSV(gv), oldlen);
748 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
750 TAINT_PROPER("inplace open");
751 if (oldlen == 1 && *PL_oldname == '-') {
752 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
753 return IoIFP(GvIOp(gv));
755 #ifndef FLEXFILENAMES
756 filedev = PL_statbuf.st_dev;
757 fileino = PL_statbuf.st_ino;
759 PL_filemode = PL_statbuf.st_mode;
760 fileuid = PL_statbuf.st_uid;
761 filegid = PL_statbuf.st_gid;
762 if (!S_ISREG(PL_filemode)) {
763 if (ckWARN_d(WARN_INPLACE))
764 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
765 "Can't do inplace edit: %s is not a regular file",
771 char *star = strchr(PL_inplace, '*');
773 char *begin = PL_inplace;
774 sv_setpvn(sv, "", 0);
776 sv_catpvn(sv, begin, star - begin);
777 sv_catpvn(sv, PL_oldname, oldlen);
779 } while ((star = strchr(begin, '*')));
784 sv_catpv(sv,PL_inplace);
786 #ifndef FLEXFILENAMES
787 if ((PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
788 && PL_statbuf.st_dev == filedev
789 && PL_statbuf.st_ino == fileino)
791 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
795 if (ckWARN_d(WARN_INPLACE))
796 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
797 "Can't do inplace edit: %"SVf" would not be unique",
804 #if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
805 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
806 if (ckWARN_d(WARN_INPLACE))
807 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
808 "Can't rename %s to %"SVf": %s, skipping file",
809 PL_oldname, sv, Strerror(errno) );
815 (void)PerlLIO_unlink(SvPVX(sv));
816 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
817 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
820 (void)UNLINK(SvPVX(sv));
821 if (link(PL_oldname,SvPVX(sv)) < 0) {
822 if (ckWARN_d(WARN_INPLACE))
823 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
824 "Can't rename %s to %"SVf": %s, skipping file",
825 PL_oldname, sv, Strerror(errno) );
829 (void)UNLINK(PL_oldname);
833 #if !defined(DOSISH) && !defined(AMIGAOS)
834 # ifndef VMS /* Don't delete; use automatic file versioning */
835 if (UNLINK(PL_oldname) < 0) {
836 if (ckWARN_d(WARN_INPLACE))
837 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
838 "Can't remove %s: %s, skipping file",
839 PL_oldname, Strerror(errno) );
845 Perl_croak(aTHX_ "Can't do inplace edit without backup");
849 sv_setpvn(sv,">",!PL_inplace);
850 sv_catpvn(sv,PL_oldname,oldlen);
851 SETERRNO(0,0); /* in case sprintf set errno */
853 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
854 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
856 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
857 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
860 if (ckWARN_d(WARN_INPLACE))
861 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
862 PL_oldname, Strerror(errno) );
866 setdefout(PL_argvoutgv);
867 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
868 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
870 (void)fchmod(PL_lastfd,PL_filemode);
872 # if !(defined(WIN32) && defined(__BORLANDC__))
873 /* Borland runtime creates a readonly file! */
874 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
877 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
879 (void)fchown(PL_lastfd,fileuid,filegid);
882 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
887 return IoIFP(GvIOp(gv));
890 if (ckWARN_d(WARN_INPLACE)) {
892 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
893 && !S_ISREG(PL_statbuf.st_mode))
895 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
896 "Can't do inplace edit: %s is not a regular file",
900 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
901 PL_oldname, Strerror(eno));
905 if (io && (IoFLAGS(io) & IOf_ARGV))
906 IoFLAGS(io) |= IOf_START;
908 (void)do_close(PL_argvoutgv,FALSE);
909 if (io && (IoFLAGS(io) & IOf_ARGV)
910 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
912 GV *oldout = (GV*)av_pop(PL_argvout_stack);
914 SvREFCNT_dec(oldout);
917 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
924 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
943 if (PerlProc_pipe(fd) < 0)
945 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
946 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
947 IoOFP(rstio) = IoIFP(rstio);
948 IoIFP(wstio) = IoOFP(wstio);
949 IoTYPE(rstio) = IoTYPE_RDONLY;
950 IoTYPE(wstio) = IoTYPE_WRONLY;
951 if (!IoIFP(rstio) || !IoOFP(wstio)) {
952 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
953 else PerlLIO_close(fd[0]);
954 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
955 else PerlLIO_close(fd[1]);
959 sv_setsv(sv,&PL_sv_yes);
963 sv_setsv(sv,&PL_sv_undef);
968 /* explicit renamed to avoid C++ conflict -- kja */
970 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
977 if (!gv || SvTYPE(gv) != SVt_PVGV) {
979 SETERRNO(EBADF,SS_IVCHAN);
983 if (!io) { /* never opened */
985 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
986 report_evil_fh(gv, io, PL_op->op_type);
987 SETERRNO(EBADF,SS_IVCHAN);
991 retval = io_close(io, not_implicit);
995 IoLINES_LEFT(io) = IoPAGE_LEN(io);
997 IoTYPE(io) = IoTYPE_CLOSED;
1002 Perl_io_close(pTHX_ IO *io, bool not_implicit)
1004 bool retval = FALSE;
1008 if (IoTYPE(io) == IoTYPE_PIPE) {
1009 status = PerlProc_pclose(IoIFP(io));
1011 STATUS_NATIVE_SET(status);
1012 retval = (STATUS_POSIX == 0);
1015 retval = (status != -1);
1018 else if (IoTYPE(io) == IoTYPE_STD)
1021 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
1022 retval = (PerlIO_close(IoOFP(io)) != EOF);
1023 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
1026 retval = (PerlIO_close(IoIFP(io)) != EOF);
1028 IoOFP(io) = IoIFP(io) = Nullfp;
1030 else if (not_implicit) {
1031 SETERRNO(EBADF,SS_IVCHAN);
1038 Perl_do_eof(pTHX_ GV *gv)
1047 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
1048 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1053 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
1054 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
1055 return FALSE; /* this is the most usual case */
1058 saverrno = errno; /* getc and ungetc can stomp on errno */
1059 ch = PerlIO_getc(IoIFP(io));
1061 (void)PerlIO_ungetc(IoIFP(io),ch);
1067 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
1068 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1069 PerlIO_set_cnt(IoIFP(io),-1);
1071 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
1072 if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
1076 return TRUE; /* normal fp, definitely end of file */
1082 Perl_do_tell(pTHX_ GV *gv)
1084 register IO *io = 0;
1085 register PerlIO *fp;
1087 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1088 #ifdef ULTRIX_STDIO_BOTCH
1090 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1092 return PerlIO_tell(fp);
1094 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1095 report_evil_fh(gv, io, PL_op->op_type);
1096 SETERRNO(EBADF,RMS_IFI);
1101 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1103 register IO *io = 0;
1104 register PerlIO *fp;
1106 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1107 #ifdef ULTRIX_STDIO_BOTCH
1109 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1111 return PerlIO_seek(fp, pos, whence) >= 0;
1113 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1114 report_evil_fh(gv, io, PL_op->op_type);
1115 SETERRNO(EBADF,RMS_IFI);
1120 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1122 register IO *io = 0;
1123 register PerlIO *fp;
1125 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1126 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1127 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1128 report_evil_fh(gv, io, PL_op->op_type);
1129 SETERRNO(EBADF,RMS_IFI);
1134 Perl_mode_from_discipline(pTHX_ SV *discp)
1136 int mode = O_BINARY;
1139 char *s = SvPV(discp,len);
1144 if (len > 3 && strnEQ(s+1, "raw", 3)
1145 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1154 if (len > 4 && strnEQ(s+1, "crlf", 4)
1155 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1164 goto fail_discipline;
1167 else if (isSPACE(*s)) {
1174 end = strchr(s+1, ':');
1177 #ifndef PERLIO_LAYERS
1178 Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s);
1190 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1192 /* The old body of this is now in non-LAYER part of perlio.c
1193 * This is a stub for any XS code which might have been calling it.
1195 char *name = ":raw";
1196 #ifdef PERLIO_USING_CRLF
1197 if (!(mode & O_BINARY))
1200 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1203 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1204 /* code courtesy of William Kucharski */
1207 I32 my_chsize(fd, length)
1208 I32 fd; /* file descriptor */
1209 Off_t length; /* length to set file to */
1214 if (PerlLIO_fstat(fd, &filebuf) < 0)
1217 if (filebuf.st_size < length) {
1219 /* extend file length */
1221 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1224 /* write a "0" byte */
1226 if ((PerlLIO_write(fd, "", 1)) != 1)
1230 /* truncate length */
1234 fl.l_start = length;
1235 fl.l_type = F_WRLCK; /* write lock on file space */
1238 * This relies on the UNDOCUMENTED F_FREESP argument to
1239 * fcntl(2), which truncates the file so that it ends at the
1240 * position indicated by fl.l_start.
1242 * Will minor miracles never cease?
1245 if (fcntl(fd, F_FREESP, &fl) < 0)
1252 #endif /* F_FREESP */
1255 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1257 register char *tmps;
1260 /* assuming fp is checked earlier */
1266 if (SvIOK(sv) && SvIVX(sv) != 0) {
1267 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1268 return !PerlIO_error(fp);
1270 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1271 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1272 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1273 return !PerlIO_error(fp);
1276 switch (SvTYPE(sv)) {
1278 if (ckWARN(WARN_UNINITIALIZED))
1286 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1288 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1289 return !PerlIO_error(fp);
1293 if (PerlIO_isutf8(fp)) {
1295 sv_utf8_upgrade_flags(sv = sv_mortalcopy(sv),
1296 SV_GMAGIC|SV_UTF8_NO_ENCODING);
1298 else if (DO_UTF8(sv)) {
1299 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
1300 && ckWARN_d(WARN_UTF8))
1302 Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
1305 tmps = SvPV(sv, len);
1308 /* To detect whether the process is about to overstep its
1309 * filesize limit we would need getrlimit(). We could then
1310 * also transparently raise the limit with setrlimit() --
1311 * but only until the system hard limit/the filesystem limit,
1312 * at which we would get EPERM. Note that when using buffered
1313 * io the write failure can be delayed until the flush/close. --jhi */
1314 if (len && (PerlIO_write(fp,tmps,len) == 0))
1316 return !PerlIO_error(fp);
1326 if (PL_op->op_flags & OPf_REF) {
1331 if (io && IoIFP(io)) {
1333 sv_setpv(PL_statname,"");
1334 PL_laststype = OP_STAT;
1335 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1339 return PL_laststatval;
1340 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1341 report_evil_fh(gv, io, PL_op->op_type);
1343 sv_setpv(PL_statname,"");
1344 return (PL_laststatval = -1);
1347 else if (PL_op->op_private & OPpFT_STACKED) {
1348 return PL_laststatval;
1355 if (SvTYPE(sv) == SVt_PVGV) {
1359 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1366 sv_setpvn(PL_statname, s, len);
1367 s = SvPVX(PL_statname); /* s now NUL-terminated */
1368 PL_laststype = OP_STAT;
1369 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1370 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1371 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
1372 return PL_laststatval;
1376 static char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
1384 if (PL_op->op_flags & OPf_REF) {
1386 if (cGVOP_gv == PL_defgv) {
1387 if (PL_laststype != OP_LSTAT)
1388 Perl_croak(aTHX_ no_prev_lstat);
1389 return PL_laststatval;
1391 if (ckWARN(WARN_IO)) {
1392 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1394 return (PL_laststatval = -1);
1397 else if (ckWARN(WARN_IO) && PL_laststype != OP_LSTAT
1398 && (PL_op->op_private & OPpFT_STACKED))
1399 Perl_croak(aTHX_ no_prev_lstat);
1401 PL_laststype = OP_LSTAT;
1405 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
1406 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1407 GvENAME((GV*) SvRV(sv)));
1408 return (PL_laststatval = -1);
1410 sv_setpv(PL_statname,SvPV(sv, n_a));
1411 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1412 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1413 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
1414 return PL_laststatval;
1419 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1421 return do_aexec5(really, mark, sp, 0, 0);
1426 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1427 int fd, int do_report)
1429 #ifdef MACOS_TRADITIONAL
1430 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1433 char *tmps = Nullch;
1437 New(401,PL_Argv, sp - mark + 1, char*);
1439 while (++mark <= sp) {
1441 *a++ = SvPVx(*mark, n_a);
1447 tmps = SvPV(really, n_a);
1448 if ((!really && *PL_Argv[0] != '/') ||
1449 (really && *tmps != '/')) /* will execvp use PATH? */
1450 TAINT_ENV(); /* testing IFS here is overkill, probably */
1452 if (really && *tmps)
1453 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1455 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1457 if (ckWARN(WARN_EXEC))
1458 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1459 (really ? tmps : PL_Argv[0]), Strerror(errno));
1463 PerlLIO_write(fd, (void*)&e, sizeof(int));
1473 Perl_do_execfree(pTHX)
1477 PL_Argv = Null(char **);
1485 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1488 Perl_do_exec(pTHX_ char *cmd)
1490 return do_exec3(cmd,0,0);
1494 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1499 while (*cmd && isSPACE(*cmd))
1502 /* save an extra exec if possible */
1507 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1508 strnEQ(cmd+PL_cshlen," -c",3)) {
1510 s = cmd+PL_cshlen+3;
1524 if (s[-1] == '\'') {
1527 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1537 /* see if there are shell metacharacters in it */
1539 if (*cmd == '.' && isSPACE(cmd[1]))
1542 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1545 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1549 for (s = cmd; *s; s++) {
1550 if (*s != ' ' && !isALPHA(*s) &&
1551 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1552 if (*s == '\n' && !s[1]) {
1556 /* handle the 2>&1 construct at the end */
1557 if (*s == '>' && s[1] == '&' && s[2] == '1'
1558 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1559 && (!s[3] || isSPACE(s[3])))
1563 while (*t && isSPACE(*t))
1565 if (!*t && (PerlLIO_dup2(1,2) != -1)) {
1572 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1578 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1579 PL_Cmd = savepvn(cmd, s-cmd);
1581 for (s = PL_Cmd; *s;) {
1582 while (*s && isSPACE(*s)) s++;
1585 while (*s && !isSPACE(*s)) s++;
1592 PerlProc_execvp(PL_Argv[0],PL_Argv);
1594 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1601 if (ckWARN(WARN_EXEC))
1602 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1603 PL_Argv[0], Strerror(errno));
1605 PerlLIO_write(fd, (void*)&e, sizeof(int));
1614 #endif /* OS2 || WIN32 */
1617 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1621 register I32 tot = 0;
1624 SV **oldmark = mark;
1627 #define APPLY_TAINT_PROPER() \
1629 if (PL_tainted) { TAINT_PROPER(what); } \
1632 /* This is a first heuristic; it doesn't catch tainting magic. */
1634 while (++mark <= sp) {
1635 if (SvTAINTED(*mark)) {
1645 APPLY_TAINT_PROPER();
1648 APPLY_TAINT_PROPER();
1650 while (++mark <= sp) {
1651 char *name = SvPVx(*mark, n_a);
1652 APPLY_TAINT_PROPER();
1653 if (PerlLIO_chmod(name, val))
1661 APPLY_TAINT_PROPER();
1662 if (sp - mark > 2) {
1663 val = SvIVx(*++mark);
1664 val2 = SvIVx(*++mark);
1665 APPLY_TAINT_PROPER();
1667 while (++mark <= sp) {
1668 char *name = SvPVx(*mark, n_a);
1669 APPLY_TAINT_PROPER();
1670 if (PerlLIO_chown(name, val, val2))
1677 XXX Should we make lchown() directly available from perl?
1678 For now, we'll let Configure test for HAS_LCHOWN, but do
1679 nothing in the core.
1685 APPLY_TAINT_PROPER();
1688 s = SvPVx(*++mark, n_a);
1690 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1692 if ((val = whichsig(s)) < 0)
1693 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1697 APPLY_TAINT_PROPER();
1700 /* kill() doesn't do process groups (job trees?) under VMS */
1701 if (val < 0) val = -val;
1702 if (val == SIGKILL) {
1703 # include <starlet.h>
1704 /* Use native sys$delprc() to insure that target process is
1705 * deleted; supervisor-mode images don't pay attention to
1706 * CRTL's emulation of Unix-style signals and kill()
1708 while (++mark <= sp) {
1709 I32 proc = SvIVx(*mark);
1710 register unsigned long int __vmssts;
1711 APPLY_TAINT_PROPER();
1712 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1716 case SS$_NOSUCHNODE:
1717 SETERRNO(ESRCH,__vmssts);
1720 SETERRNO(EPERM,__vmssts);
1723 SETERRNO(EVMSERR,__vmssts);
1732 while (++mark <= sp) {
1733 I32 proc = SvIVx(*mark);
1734 APPLY_TAINT_PROPER();
1736 if (PerlProc_killpg(proc,val)) /* BSD */
1738 if (PerlProc_kill(-proc,val)) /* SYSV */
1744 while (++mark <= sp) {
1745 I32 proc = SvIVx(*mark);
1746 APPLY_TAINT_PROPER();
1747 if (PerlProc_kill(proc, val))
1755 APPLY_TAINT_PROPER();
1757 while (++mark <= sp) {
1758 s = SvPVx(*mark, n_a);
1759 APPLY_TAINT_PROPER();
1760 if (PL_euid || PL_unsafe) {
1764 else { /* don't let root wipe out directories without -U */
1765 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1777 APPLY_TAINT_PROPER();
1778 if (sp - mark > 2) {
1779 #if defined(I_UTIME) || defined(VMS)
1780 struct utimbuf utbuf;
1788 SV* accessed = *++mark;
1789 SV* modified = *++mark;
1790 void * utbufp = &utbuf;
1792 /* Be like C, and if both times are undefined, let the C
1793 * library figure out what to do. This usually means
1794 * "current time". */
1796 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1799 Zero(&utbuf, sizeof utbuf, char);
1801 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1802 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1804 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1805 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1808 APPLY_TAINT_PROPER();
1810 while (++mark <= sp) {
1811 char *name = SvPVx(*mark, n_a);
1812 APPLY_TAINT_PROPER();
1813 if (PerlLIO_utime(name, utbufp))
1824 #undef APPLY_TAINT_PROPER
1827 /* Do the permissions allow some operation? Assumes statcache already set. */
1828 #ifndef VMS /* VMS' cando is in vms.c */
1830 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1831 /* Note: we use `effective' both for uids and gids.
1832 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1835 /* [Comments and code from Len Reed]
1836 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1837 * to write-protected files. The execute permission bit is set
1838 * by the Miscrosoft C library stat() function for the following:
1843 * All files and directories are readable.
1844 * Directories and special files, e.g. "CON", cannot be
1846 * [Comment by Tom Dinger -- a directory can have the write-protect
1847 * bit set in the file system, but DOS permits changes to
1848 * the directory anyway. In addition, all bets are off
1849 * here for networked software, such as Novell and
1853 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1854 * too so it will actually look into the files for magic numbers
1856 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1858 #else /* ! DOSISH */
1859 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1860 if (mode == S_IXUSR) {
1861 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1865 return TRUE; /* root reads and writes anything */
1868 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1869 if (statbufp->st_mode & mode)
1870 return TRUE; /* ok as "user" */
1872 else if (ingroup(statbufp->st_gid,effective)) {
1873 if (statbufp->st_mode & mode >> 3)
1874 return TRUE; /* ok as "group" */
1876 else if (statbufp->st_mode & mode >> 6)
1877 return TRUE; /* ok as "other" */
1879 #endif /* ! DOSISH */
1884 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1886 #ifdef MACOS_TRADITIONAL
1887 /* This is simply not correct for AppleShare, but fix it yerself. */
1890 if (testgid == (effective ? PL_egid : PL_gid))
1892 #ifdef HAS_GETGROUPS
1897 Groups_t gary[NGROUPS];
1900 anum = getgroups(NGROUPS,gary);
1902 if (gary[anum] == testgid)
1910 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1913 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1918 key = (key_t)SvNVx(*++mark);
1919 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1920 flags = SvIVx(*++mark);
1926 return msgget(key, flags);
1930 return semget(key, n, flags);
1934 return shmget(key, n, flags);
1936 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1938 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1941 return -1; /* should never happen */
1945 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1949 I32 id, n, cmd, infosize, getinfo;
1952 id = SvIVx(*++mark);
1953 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1954 cmd = SvIVx(*++mark);
1957 getinfo = (cmd == IPC_STAT);
1963 if (cmd == IPC_STAT || cmd == IPC_SET)
1964 infosize = sizeof(struct msqid_ds);
1969 if (cmd == IPC_STAT || cmd == IPC_SET)
1970 infosize = sizeof(struct shmid_ds);
1976 if (cmd == IPC_STAT || cmd == IPC_SET)
1977 infosize = sizeof(struct semid_ds);
1978 else if (cmd == GETALL || cmd == SETALL)
1980 struct semid_ds semds;
1982 #ifdef EXTRA_F_IN_SEMUN_BUF
1983 semun.buff = &semds;
1987 getinfo = (cmd == GETALL);
1988 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1990 infosize = semds.sem_nsems * sizeof(short);
1991 /* "short" is technically wrong but much more portable
1992 than guessing about u_?short(_t)? */
1995 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1999 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
2001 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2010 SvPV_force(astr, len);
2011 a = SvGROW(astr, infosize+1);
2015 a = SvPV(astr, len);
2016 if (len != infosize)
2017 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
2026 a = INT2PTR(char *,i); /* ouch */
2033 ret = msgctl(id, cmd, (struct msqid_ds *)a);
2039 union semun unsemds;
2041 #ifdef EXTRA_F_IN_SEMUN_BUF
2042 unsemds.buff = (struct semid_ds *)a;
2044 unsemds.buf = (struct semid_ds *)a;
2046 ret = Semctl(id, n, cmd, unsemds);
2048 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2055 ret = shmctl(id, cmd, (struct shmid_ds *)a);
2059 if (getinfo && ret >= 0) {
2060 SvCUR_set(astr, infosize);
2061 *SvEND(astr) = '\0';
2068 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
2073 I32 id, msize, flags;
2076 id = SvIVx(*++mark);
2078 flags = SvIVx(*++mark);
2079 mbuf = SvPV(mstr, len);
2080 if ((msize = len - sizeof(long)) < 0)
2081 Perl_croak(aTHX_ "Arg too short for msgsnd");
2083 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
2085 Perl_croak(aTHX_ "msgsnd not implemented");
2090 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
2096 I32 id, msize, flags, ret;
2099 id = SvIVx(*++mark);
2101 /* suppress warning when reading into undef var --jhi */
2103 sv_setpvn(mstr, "", 0);
2104 msize = SvIVx(*++mark);
2105 mtype = (long)SvIVx(*++mark);
2106 flags = SvIVx(*++mark);
2107 SvPV_force(mstr, len);
2108 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
2111 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
2113 SvCUR_set(mstr, sizeof(long)+ret);
2114 *SvEND(mstr) = '\0';
2115 #ifndef INCOMPLETE_TAINTS
2116 /* who knows who has been playing with this message? */
2122 Perl_croak(aTHX_ "msgrcv not implemented");
2127 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2135 id = SvIVx(*++mark);
2137 opbuf = SvPV(opstr, opsize);
2138 if (opsize < 3 * SHORTSIZE
2139 || (opsize % (3 * SHORTSIZE))) {
2140 SETERRNO(EINVAL,LIB_INVARG);
2144 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2146 int nsops = opsize / (3 * sizeof (short));
2148 short *ops = (short *) opbuf;
2150 struct sembuf *temps, *t;
2153 New (0, temps, nsops, struct sembuf);
2161 result = semop(id, temps, nsops);
2175 Perl_croak(aTHX_ "semop not implemented");
2180 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2185 I32 id, mpos, msize;
2187 struct shmid_ds shmds;
2189 id = SvIVx(*++mark);
2191 mpos = SvIVx(*++mark);
2192 msize = SvIVx(*++mark);
2194 if (shmctl(id, IPC_STAT, &shmds) == -1)
2196 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2197 SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */
2200 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2201 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2203 if (optype == OP_SHMREAD) {
2204 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2206 sv_setpvn(mstr, "", 0);
2207 SvPV_force(mstr, len);
2208 mbuf = SvGROW(mstr, msize+1);
2210 Copy(shm + mpos, mbuf, msize, char);
2211 SvCUR_set(mstr, msize);
2212 *SvEND(mstr) = '\0';
2214 #ifndef INCOMPLETE_TAINTS
2215 /* who knows who has been playing with this shared memory? */
2222 mbuf = SvPV(mstr, len);
2223 if ((n = len) > msize)
2225 Copy(mbuf, shm + mpos, n, char);
2227 memzero(shm + mpos + n, msize - n);
2231 Perl_croak(aTHX_ "shm I/O not implemented");
2235 #endif /* SYSV IPC */
2240 =for apidoc start_glob
2242 Function called by C<do_readline> to spawn a glob (or do the glob inside
2243 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2244 this glob starter is only used by miniperl during the build process.
2245 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2251 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2253 SV *tmpcmd = NEWSV(55, 0);
2257 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2258 /* since spawning off a process is a real performance hit */
2260 #include <descrip.h>
2261 #include <lib$routines.h>
2264 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2265 char vmsspec[NAM$C_MAXRSS+1];
2266 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2267 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2270 struct dsc$descriptor_s wilddsc
2271 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2272 struct dsc$descriptor_vs rsdsc
2273 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2274 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2276 /* We could find out if there's an explicit dev/dir or version
2277 by peeking into lib$find_file's internal context at
2278 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2279 but that's unsupported, so I don't want to do it now and
2280 have it bite someone in the future. */
2281 cp = SvPV(tmpglob,i);
2283 if (cp[i] == ';') hasver = 1;
2285 if (sts) hasver = 1;
2289 hasdir = isunix = 1;
2292 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2297 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2299 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2300 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2301 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2302 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2303 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2304 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
2305 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2306 &dfltdsc,NULL,NULL,NULL))&1)) {
2307 /* with varying string, 1st word of buffer contains result length */
2308 end = rstr + *((unsigned short int*)rslt);
2309 if (!hasver) while (*end != ';' && end > rstr) end--;
2310 *(end++) = '\n'; *end = '\0';
2311 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2313 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2318 while (*(--begin) != ']' && *begin != '>') ;
2321 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2323 if (cxt) (void)lib$find_file_end(&cxt);
2324 if (ok && sts != RMS$_NMF &&
2325 sts != RMS$_DNF && sts != RMS_FNF) ok = 0;
2328 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2330 PerlIO_close(tmpfp);
2334 PerlIO_rewind(tmpfp);
2335 IoTYPE(io) = IoTYPE_RDONLY;
2336 IoIFP(io) = fp = tmpfp;
2337 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2342 #ifdef MACOS_TRADITIONAL
2343 sv_setpv(tmpcmd, "glob ");
2344 sv_catsv(tmpcmd, tmpglob);
2345 sv_catpv(tmpcmd, " |");
2349 sv_setpv(tmpcmd, "for a in ");
2350 sv_catsv(tmpcmd, tmpglob);
2351 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2354 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2355 sv_catsv(tmpcmd, tmpglob);
2357 sv_setpv(tmpcmd, "perlglob ");
2358 sv_catsv(tmpcmd, tmpglob);
2359 sv_catpv(tmpcmd, " |");
2364 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2365 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2366 sv_catsv(tmpcmd, tmpglob);
2367 sv_catpv(tmpcmd, "' 2>/dev/null |");
2369 sv_setpv(tmpcmd, "echo ");
2370 sv_catsv(tmpcmd, tmpglob);
2372 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2374 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2377 #endif /* !DOSISH */
2378 #endif /* MACOS_TRADITIONAL */
2379 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2380 FALSE, O_RDONLY, 0, Nullfp);