3 * Copyright (c) 1991-2002, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "Far below them they saw the white waters pour into a foaming bowl, and
12 * then swirl darkly about a deep oval basin in the rocks, until they found
13 * their way out again through a narrow gate, and flowed away, fuming and
14 * chattering, into calmer and more level reaches."
18 #define PERL_IN_DOIO_C
21 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
30 # ifndef HAS_SHMAT_PROTOTYPE
31 extern Shmat_t shmat (int, char *, int);
37 # if defined(_MSC_VER) || defined(__MINGW32__)
38 # include <sys/utime.h>
45 # define OPEN_EXCL O_EXCL
50 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
55 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
56 int rawmode, int rawperm, PerlIO *supplied_fp)
58 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
59 supplied_fp, (SV **) NULL, 0);
63 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
64 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
67 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
68 supplied_fp, &svs, 1);
72 Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
73 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
76 register IO *io = GvIOn(gv);
77 PerlIO *saveifp = Nullfp;
78 PerlIO *saveofp = Nullfp;
80 char savetype = IoTYPE_CLOSED;
85 bool was_fdopen = FALSE;
86 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
88 char mode[8]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
91 Zero(mode,sizeof(mode),char);
92 PL_forkprocess = 1; /* assume true if no fork */
94 /* Collect default raw/crlf info from the op */
95 if (PL_op && PL_op->op_type == OP_OPEN) {
96 /* set up disciplines */
97 U8 flags = PL_op->op_private;
98 in_raw = (flags & OPpOPEN_IN_RAW);
99 in_crlf = (flags & OPpOPEN_IN_CRLF);
100 out_raw = (flags & OPpOPEN_OUT_RAW);
101 out_crlf = (flags & OPpOPEN_OUT_CRLF);
104 /* If currently open - close before we re-open */
106 fd = PerlIO_fileno(IoIFP(io));
107 if (IoTYPE(io) == IoTYPE_STD) {
108 /* This is a clone of one of STD* handles */
111 else if (fd >= 0 && fd <= PL_maxsysfd) {
112 /* This is one of the original STD* handles */
115 savetype = IoTYPE(io);
119 else if (IoTYPE(io) == IoTYPE_PIPE)
120 result = PerlProc_pclose(IoIFP(io));
121 else if (IoIFP(io) != IoOFP(io)) {
123 result = PerlIO_close(IoOFP(io));
124 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
127 result = PerlIO_close(IoIFP(io));
130 result = PerlIO_close(IoIFP(io));
131 if (result == EOF && fd > PL_maxsysfd) {
132 /* Why is this not Perl_warn*() call ? */
133 PerlIO_printf(Perl_error_log,
134 "Warning: unable to close filehandle %s properly.\n",
137 IoOFP(io) = IoIFP(io) = Nullfp;
141 /* sysopen style args, i.e. integer mode and permissions */
145 #ifdef O_APPEND /* Not fully portable. */
148 #ifdef O_TRUNC /* Not fully portable. */
153 O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
157 Perl_croak(aTHX_ "panic: sysopen with multiple args");
165 It might be (in OS/390 and Mac OS Classic it is)
171 This means that simple & with O_RDWR would look
172 like O_RDONLY is present. Therefore we have to
175 if ((ismodifying = (rawmode & modifyingmode))) {
176 if ((ismodifying & O_WRONLY) == O_WRONLY ||
177 (ismodifying & O_RDWR) == O_RDWR ||
178 (ismodifying & (O_CREAT|appendtrunc)))
179 TAINT_PROPER("sysopen");
181 mode[ix++] = '#'; /* Marker to openn to use numeric "sysopen" */
183 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
184 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
187 IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
189 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
193 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
196 /* Regular (non-sys) open */
201 PerlIO *that_fp = NULL;
203 type = savepvn(name, len);
207 /* Lose leading and trailing white space */
209 for (; isSPACE(*type); type++) ;
210 while (tend > type && isSPACE(tend[-1]))
214 /* New style explict name, type is just mode and discipline/layer info */
217 if (SvROK(*svp) && !strchr(name,'&')) {
219 Perl_warner(aTHX_ packWARN(WARN_IO),
220 "Can't open a reference");
221 SETERRNO(EINVAL, LIB$_INVARG);
224 #endif /* USE_STDIO */
225 name = SvOK(*svp) ? SvPV(*svp, l) : "";
227 name = savepvn(name, len);
235 if ((*type == IoTYPE_RDWR) && /* scary */
236 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
237 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
238 TAINT_PROPER("open");
243 if (*type == IoTYPE_PIPE) {
245 if (type[1] != IoTYPE_STD) {
247 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
252 for (type++; isSPACE(*type); type++) ;
262 /* command is missing 19990114 */
263 if (ckWARN(WARN_PIPE))
264 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
268 if (strNE(name,"-") || num_svs)
270 TAINT_PROPER("piped open");
271 if (!num_svs && name[len-1] == '|') {
273 if (ckWARN(WARN_PIPE))
274 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
283 fp = PerlProc_popen_list(mode, num_svs, svp);
286 fp = PerlProc_popen(name,mode);
289 else if (*type == IoTYPE_WRONLY) {
290 TAINT_PROPER("open");
292 if (*type == IoTYPE_WRONLY) {
293 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
294 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
309 dodup = PERLIO_DUP_FD;
315 if (!num_svs && !*type && supplied_fp) {
316 /* "<+&" etc. is used by typemaps */
321 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
323 if (num_svs && SvIOK(*svp)) {
326 else if (isDIGIT(*type)) {
328 for (; isSPACE(*type); type++) ;
334 thatio = sv_2io(*svp);
339 for (; isSPACE(*type); type++) ;
340 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
341 thatio = GvIO(thatgv);
345 SETERRNO(EINVAL,SS$_IVCHAN);
349 if ((that_fp = IoIFP(thatio))) {
350 /* Flush stdio buffer before dup. --mjd
351 * Unfortunately SEEK_CURing 0 seems to
352 * be optimized away on most platforms;
353 * only Solaris and Linux seem to flush
356 /* sfio fails to clear error on next
357 sfwrite, contrary to documentation.
359 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
360 PerlIO_clearerr(that_fp);
362 /* On the other hand, do all platforms
363 * take gracefully to flushing a read-only
364 * filehandle? Perhaps we should do
365 * fsetpos(src)+fgetpos(dst)? --nik */
366 PerlIO_flush(that_fp);
367 fd = PerlIO_fileno(that_fp);
368 /* When dup()ing STDIN, STDOUT or STDERR
369 * explicitly set appropriate access mode */
370 if (that_fp == PerlIO_stdout()
371 || that_fp == PerlIO_stderr())
372 IoTYPE(io) = IoTYPE_WRONLY;
373 else if (that_fp == PerlIO_stdin())
374 IoTYPE(io) = IoTYPE_RDONLY;
375 /* When dup()ing a socket, say result is
377 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
378 IoTYPE(io) = IoTYPE_SOCKET;
386 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
390 fd = PerlLIO_dup(fd);
393 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
402 for (; isSPACE(*type); type++) ;
403 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
406 fp = PerlIO_stdout();
407 IoTYPE(io) = IoTYPE_STD;
409 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
414 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
419 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
423 else if (*type == IoTYPE_RDONLY) {
425 for (type++; isSPACE(*type); type++) ;
435 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
439 IoTYPE(io) = IoTYPE_STD;
441 Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
446 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
451 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
454 else if ((num_svs && type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
455 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
457 type += 2; /* skip over '-|' */
461 while (tend > type && isSPACE(tend[-1]))
464 for (; isSPACE(*type); type++) ;
469 /* command is missing 19990114 */
470 if (ckWARN(WARN_PIPE))
471 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
475 if (strNE(name,"-") || num_svs)
477 TAINT_PROPER("piped open");
484 fp = PerlProc_popen_list(mode,num_svs,svp);
487 fp = PerlProc_popen(name,mode);
489 IoTYPE(io) = IoTYPE_PIPE;
495 IoTYPE(io) = IoTYPE_RDONLY;
497 for (; isSPACE(*name); name++) ;
503 if (strEQ(name,"-")) {
505 IoTYPE(io) = IoTYPE_STD;
509 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
514 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
519 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
520 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
524 if (ckWARN(WARN_IO)) {
525 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
526 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
527 Perl_warner(aTHX_ packWARN(WARN_IO),
528 "Filehandle STD%s opened only for input",
529 (fp == PerlIO_stdout()) ? "OUT" : "ERR");
531 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
532 Perl_warner(aTHX_ packWARN(WARN_IO),
533 "Filehandle STDIN opened only for output");
537 fd = PerlIO_fileno(fp);
538 /* If there is no fd (e.g. PerlIO::Scalar) assume it isn't a
539 * socket - this covers PerlIO::Scalar - otherwise unless we "know" the
540 * type probe for socket-ness.
542 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
543 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
544 /* If PerlIO claims to have fd we had better be able to fstat() it. */
545 (void) PerlIO_close(fp);
549 if (S_ISSOCK(PL_statbuf.st_mode))
550 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
554 !(PL_statbuf.st_mode & S_IFMT)
558 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
559 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
560 ) { /* on OS's that return 0 on fstat()ed pipe */
562 Sock_size_t buflen = sizeof tmpbuf;
563 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
564 || errno != ENOTSOCK)
565 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
566 /* but some return 0 for streams too, sigh */
568 #endif /* HAS_SOCKET */
569 #endif /* !PERL_MICRO */
573 * If this is a standard handle we discard all the layer stuff
574 * and just dup the fd into whatever was on the handle before !
577 if (saveifp) { /* must use old fp? */
578 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
579 then dup the new fileno down
582 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
583 if (saveofp != saveifp) { /* was a socket? */
584 PerlIO_close(saveofp);
588 /* Still a small can-of-worms here if (say) PerlIO::Scalar
589 is assigned to (say) STDOUT - for now let dup2() fail
590 and provide the error
592 if (PerlLIO_dup2(fd, savefd) < 0) {
593 (void)PerlIO_close(fp);
597 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
598 char newname[FILENAME_MAX+1];
599 if (PerlIO_getname(fp, newname)) {
600 if (fd == PerlIO_fileno(PerlIO_stdout()))
601 Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
602 if (fd == PerlIO_fileno(PerlIO_stderr()))
603 Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
609 /* PL_fdpid isn't used on Windows, so avoid this useless work.
610 * XXX Probably the same for a lot of other places. */
616 sv = *av_fetch(PL_fdpid,fd,TRUE);
617 (void)SvUPGRADE(sv, SVt_IV);
620 sv = *av_fetch(PL_fdpid,savefd,TRUE);
621 (void)SvUPGRADE(sv, SVt_IV);
628 /* need to close fp without closing underlying fd */
629 int ofd = PerlIO_fileno(fp);
630 int dupfd = PerlLIO_dup(ofd);
632 PerlLIO_dup2(dupfd,ofd);
633 PerlLIO_close(dupfd);
640 fd = PerlIO_fileno(fp);
642 #if defined(HAS_FCNTL) && defined(F_SETFD)
644 int save_errno = errno;
645 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
651 IoFLAGS(io) &= ~IOf_NOLINE;
653 if (IoTYPE(io) == IoTYPE_SOCKET
654 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
656 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,0,svp))) {
670 IoTYPE(io) = savetype;
675 Perl_nextargv(pTHX_ register GV *gv)
678 #ifndef FLEXFILENAMES
687 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
688 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
689 IoFLAGS(io) &= ~IOf_START;
691 if (!PL_argvout_stack)
692 PL_argvout_stack = newAV();
693 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
696 if (PL_filemode & (S_ISUID|S_ISGID)) {
697 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
699 (void)fchmod(PL_lastfd,PL_filemode);
701 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
705 while (av_len(GvAV(gv)) >= 0) {
707 sv = av_shift(GvAV(gv));
709 sv_setsv(GvSV(gv),sv);
710 SvSETMAGIC(GvSV(gv));
711 PL_oldname = SvPVx(GvSV(gv), oldlen);
712 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
714 TAINT_PROPER("inplace open");
715 if (oldlen == 1 && *PL_oldname == '-') {
716 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
717 return IoIFP(GvIOp(gv));
719 #ifndef FLEXFILENAMES
720 filedev = PL_statbuf.st_dev;
721 fileino = PL_statbuf.st_ino;
723 PL_filemode = PL_statbuf.st_mode;
724 fileuid = PL_statbuf.st_uid;
725 filegid = PL_statbuf.st_gid;
726 if (!S_ISREG(PL_filemode)) {
727 if (ckWARN_d(WARN_INPLACE))
728 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
729 "Can't do inplace edit: %s is not a regular file",
735 char *star = strchr(PL_inplace, '*');
737 char *begin = PL_inplace;
738 sv_setpvn(sv, "", 0);
740 sv_catpvn(sv, begin, star - begin);
741 sv_catpvn(sv, PL_oldname, oldlen);
743 } while ((star = strchr(begin, '*')));
748 sv_catpv(sv,PL_inplace);
750 #ifndef FLEXFILENAMES
751 if ((PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
752 && PL_statbuf.st_dev == filedev
753 && PL_statbuf.st_ino == fileino)
755 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
759 if (ckWARN_d(WARN_INPLACE))
760 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
761 "Can't do inplace edit: %s would not be unique",
768 #if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
769 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
770 if (ckWARN_d(WARN_INPLACE))
771 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
772 "Can't rename %s to %s: %s, skipping file",
773 PL_oldname, SvPVX(sv), Strerror(errno) );
779 (void)PerlLIO_unlink(SvPVX(sv));
780 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
781 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
784 (void)UNLINK(SvPVX(sv));
785 if (link(PL_oldname,SvPVX(sv)) < 0) {
786 if (ckWARN_d(WARN_INPLACE))
787 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
788 "Can't rename %s to %s: %s, skipping file",
789 PL_oldname, SvPVX(sv), Strerror(errno) );
793 (void)UNLINK(PL_oldname);
797 #if !defined(DOSISH) && !defined(AMIGAOS)
798 # ifndef VMS /* Don't delete; use automatic file versioning */
799 if (UNLINK(PL_oldname) < 0) {
800 if (ckWARN_d(WARN_INPLACE))
801 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
802 "Can't remove %s: %s, skipping file",
803 PL_oldname, Strerror(errno) );
809 Perl_croak(aTHX_ "Can't do inplace edit without backup");
813 sv_setpvn(sv,">",!PL_inplace);
814 sv_catpvn(sv,PL_oldname,oldlen);
815 SETERRNO(0,0); /* in case sprintf set errno */
817 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
818 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
820 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
821 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
824 if (ckWARN_d(WARN_INPLACE))
825 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
826 PL_oldname, Strerror(errno) );
830 setdefout(PL_argvoutgv);
831 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
832 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
834 (void)fchmod(PL_lastfd,PL_filemode);
836 # if !(defined(WIN32) && defined(__BORLANDC__))
837 /* Borland runtime creates a readonly file! */
838 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
841 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
843 (void)fchown(PL_lastfd,fileuid,filegid);
846 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
851 return IoIFP(GvIOp(gv));
854 if (ckWARN_d(WARN_INPLACE)) {
856 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
857 && !S_ISREG(PL_statbuf.st_mode))
859 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
860 "Can't do inplace edit: %s is not a regular file",
864 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
865 PL_oldname, Strerror(eno));
869 if (io && (IoFLAGS(io) & IOf_ARGV))
870 IoFLAGS(io) |= IOf_START;
872 (void)do_close(PL_argvoutgv,FALSE);
873 if (io && (IoFLAGS(io) & IOf_ARGV)
874 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
876 GV *oldout = (GV*)av_pop(PL_argvout_stack);
878 SvREFCNT_dec(oldout);
881 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
888 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
907 if (PerlProc_pipe(fd) < 0)
909 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
910 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
911 IoOFP(rstio) = IoIFP(rstio);
912 IoIFP(wstio) = IoOFP(wstio);
913 IoTYPE(rstio) = IoTYPE_RDONLY;
914 IoTYPE(wstio) = IoTYPE_WRONLY;
915 if (!IoIFP(rstio) || !IoOFP(wstio)) {
916 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
917 else PerlLIO_close(fd[0]);
918 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
919 else PerlLIO_close(fd[1]);
923 sv_setsv(sv,&PL_sv_yes);
927 sv_setsv(sv,&PL_sv_undef);
932 /* explicit renamed to avoid C++ conflict -- kja */
934 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
941 if (!gv || SvTYPE(gv) != SVt_PVGV) {
943 SETERRNO(EBADF,SS$_IVCHAN);
947 if (!io) { /* never opened */
949 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
950 report_evil_fh(gv, io, PL_op->op_type);
951 SETERRNO(EBADF,SS$_IVCHAN);
955 retval = io_close(io, not_implicit);
959 IoLINES_LEFT(io) = IoPAGE_LEN(io);
961 IoTYPE(io) = IoTYPE_CLOSED;
966 Perl_io_close(pTHX_ IO *io, bool not_implicit)
972 if (IoTYPE(io) == IoTYPE_PIPE) {
973 status = PerlProc_pclose(IoIFP(io));
975 STATUS_NATIVE_SET(status);
976 retval = (STATUS_POSIX == 0);
979 retval = (status != -1);
982 else if (IoTYPE(io) == IoTYPE_STD)
985 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
986 retval = (PerlIO_close(IoOFP(io)) != EOF);
987 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
990 retval = (PerlIO_close(IoIFP(io)) != EOF);
992 IoOFP(io) = IoIFP(io) = Nullfp;
994 else if (not_implicit) {
995 SETERRNO(EBADF,SS$_IVCHAN);
1002 Perl_do_eof(pTHX_ GV *gv)
1011 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
1012 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1016 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
1017 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
1018 return FALSE; /* this is the most usual case */
1021 ch = PerlIO_getc(IoIFP(io));
1023 (void)PerlIO_ungetc(IoIFP(io),ch);
1027 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
1028 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1029 PerlIO_set_cnt(IoIFP(io),-1);
1031 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
1032 if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
1036 return TRUE; /* normal fp, definitely end of file */
1042 Perl_do_tell(pTHX_ GV *gv)
1044 register IO *io = 0;
1045 register PerlIO *fp;
1047 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1048 #ifdef ULTRIX_STDIO_BOTCH
1050 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1052 return PerlIO_tell(fp);
1054 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1055 report_evil_fh(gv, io, PL_op->op_type);
1056 SETERRNO(EBADF,RMS$_IFI);
1061 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1063 register IO *io = 0;
1064 register PerlIO *fp;
1066 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1067 #ifdef ULTRIX_STDIO_BOTCH
1069 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1071 return PerlIO_seek(fp, pos, whence) >= 0;
1073 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1074 report_evil_fh(gv, io, PL_op->op_type);
1075 SETERRNO(EBADF,RMS$_IFI);
1080 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1082 register IO *io = 0;
1083 register PerlIO *fp;
1085 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1086 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1087 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1088 report_evil_fh(gv, io, PL_op->op_type);
1089 SETERRNO(EBADF,RMS$_IFI);
1094 Perl_mode_from_discipline(pTHX_ SV *discp)
1096 int mode = O_BINARY;
1099 char *s = SvPV(discp,len);
1104 if (len > 3 && strnEQ(s+1, "raw", 3)
1105 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1114 if (len > 4 && strnEQ(s+1, "crlf", 4)
1115 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1124 goto fail_discipline;
1127 else if (isSPACE(*s)) {
1134 end = strchr(s+1, ':');
1137 #ifndef PERLIO_LAYERS
1138 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1149 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1151 /* The old body of this is now in non-LAYER part of perlio.c
1152 * This is a stub for any XS code which might have been calling it.
1154 char *name = ":raw";
1155 #ifdef PERLIO_USING_CRLF
1156 if (!(mode & O_BINARY))
1159 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1162 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1163 /* code courtesy of William Kucharski */
1166 I32 my_chsize(fd, length)
1167 I32 fd; /* file descriptor */
1168 Off_t length; /* length to set file to */
1173 if (PerlLIO_fstat(fd, &filebuf) < 0)
1176 if (filebuf.st_size < length) {
1178 /* extend file length */
1180 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1183 /* write a "0" byte */
1185 if ((PerlLIO_write(fd, "", 1)) != 1)
1189 /* truncate length */
1193 fl.l_start = length;
1194 fl.l_type = F_WRLCK; /* write lock on file space */
1197 * This relies on the UNDOCUMENTED F_FREESP argument to
1198 * fcntl(2), which truncates the file so that it ends at the
1199 * position indicated by fl.l_start.
1201 * Will minor miracles never cease?
1204 if (fcntl(fd, F_FREESP, &fl) < 0)
1211 #endif /* F_FREESP */
1214 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1216 register char *tmps;
1219 /* assuming fp is checked earlier */
1225 if (SvIOK(sv) && SvIVX(sv) != 0) {
1226 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1227 return !PerlIO_error(fp);
1229 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1230 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1231 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1232 return !PerlIO_error(fp);
1235 switch (SvTYPE(sv)) {
1237 if (ckWARN(WARN_UNINITIALIZED))
1245 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1247 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1248 return !PerlIO_error(fp);
1252 if (PerlIO_isutf8(fp)) {
1254 sv_utf8_upgrade(sv = sv_mortalcopy(sv));
1256 else if (DO_UTF8(sv)) {
1257 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
1258 && ckWARN_d(WARN_UTF8))
1260 Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
1263 tmps = SvPV(sv, len);
1266 /* To detect whether the process is about to overstep its
1267 * filesize limit we would need getrlimit(). We could then
1268 * also transparently raise the limit with setrlimit() --
1269 * but only until the system hard limit/the filesystem limit,
1270 * at which we would get EPERM. Note that when using buffered
1271 * io the write failure can be delayed until the flush/close. --jhi */
1272 if (len && (PerlIO_write(fp,tmps,len) == 0))
1274 return !PerlIO_error(fp);
1284 if (PL_op->op_flags & OPf_REF) {
1289 if (io && IoIFP(io)) {
1291 sv_setpv(PL_statname,"");
1292 PL_laststype = OP_STAT;
1293 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1297 return PL_laststatval;
1298 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1299 report_evil_fh(gv, io, PL_op->op_type);
1301 sv_setpv(PL_statname,"");
1302 return (PL_laststatval = -1);
1310 if (SvTYPE(sv) == SVt_PVGV) {
1314 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1321 sv_setpv(PL_statname, s);
1322 PL_laststype = OP_STAT;
1323 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1324 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1325 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
1326 return PL_laststatval;
1336 if (PL_op->op_flags & OPf_REF) {
1338 if (cGVOP_gv == PL_defgv) {
1339 if (PL_laststype != OP_LSTAT)
1340 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1341 return PL_laststatval;
1343 if (ckWARN(WARN_IO)) {
1344 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1346 return (PL_laststatval = -1);
1350 PL_laststype = OP_LSTAT;
1354 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
1355 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1356 GvENAME((GV*) SvRV(sv)));
1357 return (PL_laststatval = -1);
1359 sv_setpv(PL_statname,SvPV(sv, n_a));
1360 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1361 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1362 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
1363 return PL_laststatval;
1367 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1369 return do_aexec5(really, mark, sp, 0, 0);
1373 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1374 int fd, int do_report)
1376 #ifdef MACOS_TRADITIONAL
1377 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1380 char *tmps = Nullch;
1384 New(401,PL_Argv, sp - mark + 1, char*);
1386 while (++mark <= sp) {
1388 *a++ = SvPVx(*mark, n_a);
1394 tmps = SvPV(really, n_a);
1395 if ((!really && *PL_Argv[0] != '/') ||
1396 (really && *tmps != '/')) /* will execvp use PATH? */
1397 TAINT_ENV(); /* testing IFS here is overkill, probably */
1398 if (really && *tmps)
1399 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1401 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1402 if (ckWARN(WARN_EXEC))
1403 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1404 (really ? tmps : PL_Argv[0]), Strerror(errno));
1408 PerlLIO_write(fd, (void*)&e, sizeof(int));
1418 Perl_do_execfree(pTHX)
1422 PL_Argv = Null(char **);
1430 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1433 Perl_do_exec(pTHX_ char *cmd)
1435 return do_exec3(cmd,0,0);
1439 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1444 while (*cmd && isSPACE(*cmd))
1447 /* save an extra exec if possible */
1452 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1453 strnEQ(cmd+PL_cshlen," -c",3)) {
1455 s = cmd+PL_cshlen+3;
1469 if (s[-1] == '\'') {
1471 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1480 /* see if there are shell metacharacters in it */
1482 if (*cmd == '.' && isSPACE(cmd[1]))
1485 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1488 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1492 for (s = cmd; *s; s++) {
1493 if (*s != ' ' && !isALPHA(*s) &&
1494 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1495 if (*s == '\n' && !s[1]) {
1499 /* handle the 2>&1 construct at the end */
1500 if (*s == '>' && s[1] == '&' && s[2] == '1'
1501 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1502 && (!s[3] || isSPACE(s[3])))
1506 while (*t && isSPACE(*t))
1508 if (!*t && (dup2(1,2) != -1)) {
1514 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1519 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1520 PL_Cmd = savepvn(cmd, s-cmd);
1522 for (s = PL_Cmd; *s;) {
1523 while (*s && isSPACE(*s)) s++;
1526 while (*s && !isSPACE(*s)) s++;
1532 PerlProc_execvp(PL_Argv[0],PL_Argv);
1533 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1540 if (ckWARN(WARN_EXEC))
1541 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1542 PL_Argv[0], Strerror(errno));
1544 PerlLIO_write(fd, (void*)&e, sizeof(int));
1553 #endif /* OS2 || WIN32 */
1556 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1560 register I32 tot = 0;
1563 SV **oldmark = mark;
1566 #define APPLY_TAINT_PROPER() \
1568 if (PL_tainted) { TAINT_PROPER(what); } \
1571 /* This is a first heuristic; it doesn't catch tainting magic. */
1573 while (++mark <= sp) {
1574 if (SvTAINTED(*mark)) {
1584 APPLY_TAINT_PROPER();
1587 APPLY_TAINT_PROPER();
1589 while (++mark <= sp) {
1590 char *name = SvPVx(*mark, n_a);
1591 APPLY_TAINT_PROPER();
1592 if (PerlLIO_chmod(name, val))
1600 APPLY_TAINT_PROPER();
1601 if (sp - mark > 2) {
1602 val = SvIVx(*++mark);
1603 val2 = SvIVx(*++mark);
1604 APPLY_TAINT_PROPER();
1606 while (++mark <= sp) {
1607 char *name = SvPVx(*mark, n_a);
1608 APPLY_TAINT_PROPER();
1609 if (PerlLIO_chown(name, val, val2))
1616 XXX Should we make lchown() directly available from perl?
1617 For now, we'll let Configure test for HAS_LCHOWN, but do
1618 nothing in the core.
1624 APPLY_TAINT_PROPER();
1627 s = SvPVx(*++mark, n_a);
1629 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1631 if (!(val = whichsig(s)))
1632 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1636 APPLY_TAINT_PROPER();
1639 /* kill() doesn't do process groups (job trees?) under VMS */
1640 if (val < 0) val = -val;
1641 if (val == SIGKILL) {
1642 # include <starlet.h>
1643 /* Use native sys$delprc() to insure that target process is
1644 * deleted; supervisor-mode images don't pay attention to
1645 * CRTL's emulation of Unix-style signals and kill()
1647 while (++mark <= sp) {
1648 I32 proc = SvIVx(*mark);
1649 register unsigned long int __vmssts;
1650 APPLY_TAINT_PROPER();
1651 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1655 case SS$_NOSUCHNODE:
1656 SETERRNO(ESRCH,__vmssts);
1659 SETERRNO(EPERM,__vmssts);
1662 SETERRNO(EVMSERR,__vmssts);
1671 while (++mark <= sp) {
1672 I32 proc = SvIVx(*mark);
1673 APPLY_TAINT_PROPER();
1675 if (PerlProc_killpg(proc,val)) /* BSD */
1677 if (PerlProc_kill(-proc,val)) /* SYSV */
1683 while (++mark <= sp) {
1684 I32 proc = SvIVx(*mark);
1685 APPLY_TAINT_PROPER();
1686 if (PerlProc_kill(proc, val))
1694 APPLY_TAINT_PROPER();
1696 while (++mark <= sp) {
1697 s = SvPVx(*mark, n_a);
1698 APPLY_TAINT_PROPER();
1699 if (PL_euid || PL_unsafe) {
1703 else { /* don't let root wipe out directories without -U */
1704 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1716 APPLY_TAINT_PROPER();
1717 if (sp - mark > 2) {
1718 #if defined(I_UTIME) || defined(VMS)
1719 struct utimbuf utbuf;
1727 SV* accessed = *++mark;
1728 SV* modified = *++mark;
1729 void * utbufp = &utbuf;
1731 /* be like C, and if both times are undefined, let the C
1732 library figure out what to do. This usually means
1735 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1738 Zero(&utbuf, sizeof utbuf, char);
1740 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1741 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1743 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1744 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1746 APPLY_TAINT_PROPER();
1748 while (++mark <= sp) {
1749 char *name = SvPVx(*mark, n_a);
1750 APPLY_TAINT_PROPER();
1751 if (PerlLIO_utime(name, utbufp))
1762 #undef APPLY_TAINT_PROPER
1765 /* Do the permissions allow some operation? Assumes statcache already set. */
1766 #ifndef VMS /* VMS' cando is in vms.c */
1768 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1769 /* Note: we use `effective' both for uids and gids.
1770 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1773 /* [Comments and code from Len Reed]
1774 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1775 * to write-protected files. The execute permission bit is set
1776 * by the Miscrosoft C library stat() function for the following:
1781 * All files and directories are readable.
1782 * Directories and special files, e.g. "CON", cannot be
1784 * [Comment by Tom Dinger -- a directory can have the write-protect
1785 * bit set in the file system, but DOS permits changes to
1786 * the directory anyway. In addition, all bets are off
1787 * here for networked software, such as Novell and
1791 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1792 * too so it will actually look into the files for magic numbers
1794 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1796 #else /* ! DOSISH */
1797 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1798 if (mode == S_IXUSR) {
1799 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1803 return TRUE; /* root reads and writes anything */
1806 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1807 if (statbufp->st_mode & mode)
1808 return TRUE; /* ok as "user" */
1810 else if (ingroup(statbufp->st_gid,effective)) {
1811 if (statbufp->st_mode & mode >> 3)
1812 return TRUE; /* ok as "group" */
1814 else if (statbufp->st_mode & mode >> 6)
1815 return TRUE; /* ok as "other" */
1817 #endif /* ! DOSISH */
1822 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1824 #ifdef MACOS_TRADITIONAL
1825 /* This is simply not correct for AppleShare, but fix it yerself. */
1828 if (testgid == (effective ? PL_egid : PL_gid))
1830 #ifdef HAS_GETGROUPS
1835 Groups_t gary[NGROUPS];
1838 anum = getgroups(NGROUPS,gary);
1840 if (gary[anum] == testgid)
1848 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1851 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1856 key = (key_t)SvNVx(*++mark);
1857 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1858 flags = SvIVx(*++mark);
1864 return msgget(key, flags);
1868 return semget(key, n, flags);
1872 return shmget(key, n, flags);
1874 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1876 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1879 return -1; /* should never happen */
1883 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1887 I32 id, n, cmd, infosize, getinfo;
1890 id = SvIVx(*++mark);
1891 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1892 cmd = SvIVx(*++mark);
1895 getinfo = (cmd == IPC_STAT);
1901 if (cmd == IPC_STAT || cmd == IPC_SET)
1902 infosize = sizeof(struct msqid_ds);
1907 if (cmd == IPC_STAT || cmd == IPC_SET)
1908 infosize = sizeof(struct shmid_ds);
1914 if (cmd == IPC_STAT || cmd == IPC_SET)
1915 infosize = sizeof(struct semid_ds);
1916 else if (cmd == GETALL || cmd == SETALL)
1918 struct semid_ds semds;
1920 #ifdef EXTRA_F_IN_SEMUN_BUF
1921 semun.buff = &semds;
1925 getinfo = (cmd == GETALL);
1926 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1928 infosize = semds.sem_nsems * sizeof(short);
1929 /* "short" is technically wrong but much more portable
1930 than guessing about u_?short(_t)? */
1933 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1937 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1939 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1948 SvPV_force(astr, len);
1949 a = SvGROW(astr, infosize+1);
1953 a = SvPV(astr, len);
1954 if (len != infosize)
1955 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1964 a = INT2PTR(char *,i); /* ouch */
1971 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1977 union semun unsemds;
1979 #ifdef EXTRA_F_IN_SEMUN_BUF
1980 unsemds.buff = (struct semid_ds *)a;
1982 unsemds.buf = (struct semid_ds *)a;
1984 ret = Semctl(id, n, cmd, unsemds);
1986 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1993 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1997 if (getinfo && ret >= 0) {
1998 SvCUR_set(astr, infosize);
1999 *SvEND(astr) = '\0';
2006 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
2011 I32 id, msize, flags;
2014 id = SvIVx(*++mark);
2016 flags = SvIVx(*++mark);
2017 mbuf = SvPV(mstr, len);
2018 if ((msize = len - sizeof(long)) < 0)
2019 Perl_croak(aTHX_ "Arg too short for msgsnd");
2021 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
2023 Perl_croak(aTHX_ "msgsnd not implemented");
2028 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
2034 I32 id, msize, flags, ret;
2037 id = SvIVx(*++mark);
2039 /* suppress warning when reading into undef var --jhi */
2041 sv_setpvn(mstr, "", 0);
2042 msize = SvIVx(*++mark);
2043 mtype = (long)SvIVx(*++mark);
2044 flags = SvIVx(*++mark);
2045 SvPV_force(mstr, len);
2046 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
2049 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
2051 SvCUR_set(mstr, sizeof(long)+ret);
2052 *SvEND(mstr) = '\0';
2053 #ifndef INCOMPLETE_TAINTS
2054 /* who knows who has been playing with this message? */
2060 Perl_croak(aTHX_ "msgrcv not implemented");
2065 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2073 id = SvIVx(*++mark);
2075 opbuf = SvPV(opstr, opsize);
2076 if (opsize < 3 * SHORTSIZE
2077 || (opsize % (3 * SHORTSIZE))) {
2078 SETERRNO(EINVAL,LIB$_INVARG);
2082 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2084 int nsops = opsize / (3 * sizeof (short));
2086 short *ops = (short *) opbuf;
2088 struct sembuf *temps, *t;
2091 New (0, temps, nsops, struct sembuf);
2099 result = semop(id, temps, nsops);
2113 Perl_croak(aTHX_ "semop not implemented");
2118 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2123 I32 id, mpos, msize;
2125 struct shmid_ds shmds;
2127 id = SvIVx(*++mark);
2129 mpos = SvIVx(*++mark);
2130 msize = SvIVx(*++mark);
2132 if (shmctl(id, IPC_STAT, &shmds) == -1)
2134 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2135 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2138 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2139 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2141 if (optype == OP_SHMREAD) {
2142 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2144 sv_setpvn(mstr, "", 0);
2145 SvPV_force(mstr, len);
2146 mbuf = SvGROW(mstr, msize+1);
2148 Copy(shm + mpos, mbuf, msize, char);
2149 SvCUR_set(mstr, msize);
2150 *SvEND(mstr) = '\0';
2152 #ifndef INCOMPLETE_TAINTS
2153 /* who knows who has been playing with this shared memory? */
2160 mbuf = SvPV(mstr, len);
2161 if ((n = len) > msize)
2163 Copy(mbuf, shm + mpos, n, char);
2165 memzero(shm + mpos + n, msize - n);
2169 Perl_croak(aTHX_ "shm I/O not implemented");
2173 #endif /* SYSV IPC */
2178 =for apidoc start_glob
2180 Function called by C<do_readline> to spawn a glob (or do the glob inside
2181 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2182 this glob starter is only used by miniperl during the build process.
2183 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2189 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2191 SV *tmpcmd = NEWSV(55, 0);
2195 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2196 /* since spawning off a process is a real performance hit */
2198 #include <descrip.h>
2199 #include <lib$routines.h>
2202 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2203 char vmsspec[NAM$C_MAXRSS+1];
2204 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2205 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2208 struct dsc$descriptor_s wilddsc
2209 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2210 struct dsc$descriptor_vs rsdsc
2211 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2212 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2214 /* We could find out if there's an explicit dev/dir or version
2215 by peeking into lib$find_file's internal context at
2216 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2217 but that's unsupported, so I don't want to do it now and
2218 have it bite someone in the future. */
2219 cp = SvPV(tmpglob,i);
2221 if (cp[i] == ';') hasver = 1;
2223 if (sts) hasver = 1;
2227 hasdir = isunix = 1;
2230 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2235 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2237 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2238 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2239 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2240 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2241 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2242 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
2243 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2244 &dfltdsc,NULL,NULL,NULL))&1)) {
2245 end = rstr + (unsigned long int) *rslt;
2246 if (!hasver) while (*end != ';') end--;
2247 *(end++) = '\n'; *end = '\0';
2248 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2250 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2255 while (*(--begin) != ']' && *begin != '>') ;
2258 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2260 if (cxt) (void)lib$find_file_end(&cxt);
2261 if (ok && sts != RMS$_NMF &&
2262 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
2265 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2267 PerlIO_close(tmpfp);
2271 PerlIO_rewind(tmpfp);
2272 IoTYPE(io) = IoTYPE_RDONLY;
2273 IoIFP(io) = fp = tmpfp;
2274 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2279 #ifdef MACOS_TRADITIONAL
2280 sv_setpv(tmpcmd, "glob ");
2281 sv_catsv(tmpcmd, tmpglob);
2282 sv_catpv(tmpcmd, " |");
2286 sv_setpv(tmpcmd, "for a in ");
2287 sv_catsv(tmpcmd, tmpglob);
2288 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2291 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2292 sv_catsv(tmpcmd, tmpglob);
2294 sv_setpv(tmpcmd, "perlglob ");
2295 sv_catsv(tmpcmd, tmpglob);
2296 sv_catpv(tmpcmd, " |");
2301 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2302 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2303 sv_catsv(tmpcmd, tmpglob);
2304 sv_catpv(tmpcmd, "' 2>/dev/null |");
2306 sv_setpv(tmpcmd, "echo ");
2307 sv_catsv(tmpcmd, tmpglob);
2309 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2311 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2314 #endif /* !DOSISH */
2315 #endif /* MACOS_TRADITIONAL */
2316 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2317 FALSE, O_RDONLY, 0, Nullfp);