3 * Copyright (c) 1991-2001, 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 */
144 Perl_croak(aTHX_ "panic: sysopen with multiple args");
146 if (rawmode & (O_WRONLY|O_RDWR|O_CREAT
147 #ifdef O_APPEND /* Not fully portable. */
150 #ifdef O_TRUNC /* Not fully portable. */
154 TAINT_PROPER("sysopen");
155 mode[ix++] = '#'; /* Marker to openn to use numeric "sysopen" */
157 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
158 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
162 #define O_ACCMODE 3 /* Assume traditional implementation */
165 switch (result = rawmode & O_ACCMODE) {
167 IoTYPE(io) = IoTYPE_RDONLY;
170 IoTYPE(io) = IoTYPE_WRONLY;
174 IoTYPE(io) = IoTYPE_RDWR;
177 writing = (result > 0);
179 if (result == O_RDONLY) {
183 else if (rawmode & O_APPEND) {
185 if (result != O_WRONLY)
190 if (result == O_WRONLY)
197 if (rawmode & O_BINARY)
201 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
205 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
208 /* Regular (non-sys) open */
214 type = savepvn(name, len);
217 /* Loose trailing white space */
218 while (tend > type && isSPACE(tend[-1]))
221 /* New style explict name, type is just mode and discipline/layer info */
223 name = SvOK(*svp) ? SvPV(*svp, l) : "";
225 name = savepvn(name, len);
228 for (; isSPACE(*type); type++) ;
235 if ((*type == IoTYPE_RDWR) && ((!num_svs || tend > type+1 && tend[-1] != IoTYPE_PIPE))) { /* scary */
240 if (*type == IoTYPE_PIPE) {
242 if (type[1] != IoTYPE_STD) {
244 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
249 for (type++; isSPACE(*type); type++) ;
255 /* command is missing 19990114 */
256 if (ckWARN(WARN_PIPE))
257 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
261 if (strNE(name,"-") || num_svs)
263 TAINT_PROPER("piped open");
264 if (!num_svs && name[len-1] == '|') {
266 if (ckWARN(WARN_PIPE))
267 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
276 fp = PerlProc_popen_list(mode, num_svs, svp);
279 fp = PerlProc_popen(name,mode);
282 else if (*type == IoTYPE_WRONLY) {
283 TAINT_PROPER("open");
285 if (*type == IoTYPE_WRONLY) {
286 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
287 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
308 if (!num_svs && !*type && supplied_fp) {
309 /* "<+&" etc. is used by typemaps */
314 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
316 if (num_svs && SvIOK(*svp)) {
319 else if (isDIGIT(*type)) {
321 for (; isSPACE(*type); type++) ;
327 thatio = sv_2io(*svp);
332 for (; isSPACE(*type); type++) ;
333 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
334 thatio = GvIO(thatgv);
338 SETERRNO(EINVAL,SS$_IVCHAN);
343 PerlIO *fp = IoIFP(thatio);
344 /* Flush stdio buffer before dup. --mjd
345 * Unfortunately SEEK_CURing 0 seems to
346 * be optimized away on most platforms;
347 * only Solaris and Linux seem to flush
350 /* sfio fails to clear error on next
351 sfwrite, contrary to documentation.
353 if (PerlIO_seek(fp, 0, SEEK_CUR) == -1)
356 /* On the other hand, do all platforms
357 * take gracefully to flushing a read-only
358 * filehandle? Perhaps we should do
359 * fsetpos(src)+fgetpos(dst)? --nik */
361 fd = PerlIO_fileno(fp);
362 /* When dup()ing STDIN, STDOUT or STDERR
363 * explicitly set appropriate access mode */
364 if (IoIFP(thatio) == PerlIO_stdout()
365 || IoIFP(thatio) == PerlIO_stderr())
366 IoTYPE(io) = IoTYPE_WRONLY;
367 else if (IoIFP(thatio) == PerlIO_stdin())
368 IoTYPE(io) = IoTYPE_RDONLY;
369 /* When dup()ing a socket, say result is
371 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
372 IoTYPE(io) = IoTYPE_SOCKET;
378 fd = PerlLIO_dup(fd);
383 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
391 Perl_croak(aTHX_ "More than one argument to '>' open");
394 for (; isSPACE(*type); type++) ;
395 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
398 fp = PerlIO_stdout();
399 IoTYPE(io) = IoTYPE_STD;
403 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
408 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
412 else if (*type == IoTYPE_RDONLY) {
414 Perl_croak(aTHX_ "More than one argument to '<' open");
417 for (type++; isSPACE(*type); type++) ;
427 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
431 IoTYPE(io) = IoTYPE_STD;
435 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
440 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
443 else if ((num_svs && type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
444 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
446 type += 2; /* skip over '-|' */
450 while (tend > type && isSPACE(tend[-1]))
453 for (; isSPACE(*type); type++) ;
458 /* command is missing 19990114 */
459 if (ckWARN(WARN_PIPE))
460 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
464 if (strNE(name,"-") || num_svs)
466 TAINT_PROPER("piped open");
473 fp = PerlProc_popen_list(mode,num_svs,svp);
476 fp = PerlProc_popen(name,mode);
478 IoTYPE(io) = IoTYPE_PIPE;
484 IoTYPE(io) = IoTYPE_RDONLY;
486 for (; isSPACE(*name); name++) ;
492 if (strEQ(name,"-")) {
494 IoTYPE(io) = IoTYPE_STD;
498 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
503 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
508 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
509 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
513 if (ckWARN(WARN_IO)) {
514 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
515 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
516 Perl_warner(aTHX_ WARN_IO,
517 "Filehandle STD%s opened only for input",
518 (fp == PerlIO_stdout()) ? "OUT" : "ERR");
520 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
521 Perl_warner(aTHX_ WARN_IO,
522 "Filehandle STDIN opened only for output");
526 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD &&
527 /* FIXME: This next term is a hack to avoid fileno on PerlIO::Scalar */
528 !(num_svs && SvROK(*svp))) {
529 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
530 (void)PerlIO_close(fp);
533 if (S_ISSOCK(PL_statbuf.st_mode))
534 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
538 !(PL_statbuf.st_mode & S_IFMT)
542 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
543 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
544 ) { /* on OS's that return 0 on fstat()ed pipe */
546 Sock_size_t buflen = sizeof tmpbuf;
547 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
549 || errno != ENOTSOCK)
550 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
551 /* but some return 0 for streams too, sigh */
555 if (saveifp) { /* must use old fp? */
556 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
557 then dup the new fileno down
559 fd = PerlIO_fileno(fp);
561 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
562 if (saveofp != saveifp) { /* was a socket? */
563 PerlIO_close(saveofp);
569 if (PerlLIO_dup2(fd, savefd) < 0) {
570 (void)PerlIO_close(fp);
574 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
575 char newname[FILENAME_MAX+1];
576 if (PerlIO_getname(fp, newname)) {
577 if (fd == PerlIO_fileno(PerlIO_stdout())) Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
578 if (fd == PerlIO_fileno(PerlIO_stderr())) Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
583 sv = *av_fetch(PL_fdpid,fd,TRUE);
584 (void)SvUPGRADE(sv, SVt_IV);
587 sv = *av_fetch(PL_fdpid,savefd,TRUE);
589 (void)SvUPGRADE(sv, SVt_IV);
597 #if defined(HAS_FCNTL) && defined(F_SETFD)
599 int save_errno = errno;
600 fd = PerlIO_fileno(fp);
601 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
607 IoFLAGS(io) &= ~IOf_NOLINE;
609 if (IoTYPE(io) == IoTYPE_SOCKET
610 || (IoTYPE(io) == IoTYPE_WRONLY && S_ISCHR(PL_statbuf.st_mode)) ) {
612 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,mode,PerlIO_fileno(fp),0,0,NULL,num_svs,svp))) {
626 IoTYPE(io) = savetype;
631 Perl_nextargv(pTHX_ register GV *gv)
634 #ifndef FLEXFILENAMES
643 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
644 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
645 IoFLAGS(io) &= ~IOf_START;
647 if (!PL_argvout_stack)
648 PL_argvout_stack = newAV();
649 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
652 if (PL_filemode & (S_ISUID|S_ISGID)) {
653 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
655 (void)fchmod(PL_lastfd,PL_filemode);
657 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
661 while (av_len(GvAV(gv)) >= 0) {
663 sv = av_shift(GvAV(gv));
665 sv_setsv(GvSV(gv),sv);
666 SvSETMAGIC(GvSV(gv));
667 PL_oldname = SvPVx(GvSV(gv), oldlen);
668 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
670 TAINT_PROPER("inplace open");
671 if (oldlen == 1 && *PL_oldname == '-') {
672 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
673 return IoIFP(GvIOp(gv));
675 #ifndef FLEXFILENAMES
676 filedev = PL_statbuf.st_dev;
677 fileino = PL_statbuf.st_ino;
679 PL_filemode = PL_statbuf.st_mode;
680 fileuid = PL_statbuf.st_uid;
681 filegid = PL_statbuf.st_gid;
682 if (!S_ISREG(PL_filemode)) {
683 if (ckWARN_d(WARN_INPLACE))
684 Perl_warner(aTHX_ WARN_INPLACE,
685 "Can't do inplace edit: %s is not a regular file",
691 char *star = strchr(PL_inplace, '*');
693 char *begin = PL_inplace;
694 sv_setpvn(sv, "", 0);
696 sv_catpvn(sv, begin, star - begin);
697 sv_catpvn(sv, PL_oldname, oldlen);
699 } while ((star = strchr(begin, '*')));
704 sv_catpv(sv,PL_inplace);
706 #ifndef FLEXFILENAMES
707 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
708 && PL_statbuf.st_dev == filedev
709 && PL_statbuf.st_ino == fileino
711 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
715 if (ckWARN_d(WARN_INPLACE))
716 Perl_warner(aTHX_ WARN_INPLACE,
717 "Can't do inplace edit: %s would not be unique",
724 #if !defined(DOSISH) && !defined(__CYGWIN__)
725 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
726 if (ckWARN_d(WARN_INPLACE))
727 Perl_warner(aTHX_ WARN_INPLACE,
728 "Can't rename %s to %s: %s, skipping file",
729 PL_oldname, SvPVX(sv), Strerror(errno) );
735 (void)PerlLIO_unlink(SvPVX(sv));
736 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
737 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
740 (void)UNLINK(SvPVX(sv));
741 if (link(PL_oldname,SvPVX(sv)) < 0) {
742 if (ckWARN_d(WARN_INPLACE))
743 Perl_warner(aTHX_ WARN_INPLACE,
744 "Can't rename %s to %s: %s, skipping file",
745 PL_oldname, SvPVX(sv), Strerror(errno) );
749 (void)UNLINK(PL_oldname);
753 #if !defined(DOSISH) && !defined(AMIGAOS)
754 # ifndef VMS /* Don't delete; use automatic file versioning */
755 if (UNLINK(PL_oldname) < 0) {
756 if (ckWARN_d(WARN_INPLACE))
757 Perl_warner(aTHX_ WARN_INPLACE,
758 "Can't remove %s: %s, skipping file",
759 PL_oldname, Strerror(errno) );
765 Perl_croak(aTHX_ "Can't do inplace edit without backup");
769 sv_setpvn(sv,">",!PL_inplace);
770 sv_catpvn(sv,PL_oldname,oldlen);
771 SETERRNO(0,0); /* in case sprintf set errno */
773 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
774 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
776 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
777 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
780 if (ckWARN_d(WARN_INPLACE))
781 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
782 PL_oldname, Strerror(errno) );
786 setdefout(PL_argvoutgv);
787 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
788 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
790 (void)fchmod(PL_lastfd,PL_filemode);
792 # if !(defined(WIN32) && defined(__BORLANDC__))
793 /* Borland runtime creates a readonly file! */
794 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
797 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
799 (void)fchown(PL_lastfd,fileuid,filegid);
802 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
807 return IoIFP(GvIOp(gv));
810 if (ckWARN_d(WARN_INPLACE)) {
812 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
813 && !S_ISREG(PL_statbuf.st_mode))
815 Perl_warner(aTHX_ WARN_INPLACE,
816 "Can't do inplace edit: %s is not a regular file",
820 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
821 PL_oldname, Strerror(eno));
825 if (io && (IoFLAGS(io) & IOf_ARGV))
826 IoFLAGS(io) |= IOf_START;
828 (void)do_close(PL_argvoutgv,FALSE);
829 if (io && (IoFLAGS(io) & IOf_ARGV)
830 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
832 GV *oldout = (GV*)av_pop(PL_argvout_stack);
834 SvREFCNT_dec(oldout);
837 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
844 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
863 if (PerlProc_pipe(fd) < 0)
865 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
866 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
867 IoIFP(wstio) = IoOFP(wstio);
868 IoTYPE(rstio) = IoTYPE_RDONLY;
869 IoTYPE(wstio) = IoTYPE_WRONLY;
870 if (!IoIFP(rstio) || !IoOFP(wstio)) {
871 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
872 else PerlLIO_close(fd[0]);
873 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
874 else PerlLIO_close(fd[1]);
878 sv_setsv(sv,&PL_sv_yes);
882 sv_setsv(sv,&PL_sv_undef);
887 /* explicit renamed to avoid C++ conflict -- kja */
889 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
896 if (!gv || SvTYPE(gv) != SVt_PVGV) {
898 SETERRNO(EBADF,SS$_IVCHAN);
902 if (!io) { /* never opened */
904 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
905 report_evil_fh(gv, io, PL_op->op_type);
906 SETERRNO(EBADF,SS$_IVCHAN);
910 retval = io_close(io, not_implicit);
914 IoLINES_LEFT(io) = IoPAGE_LEN(io);
916 IoTYPE(io) = IoTYPE_CLOSED;
921 Perl_io_close(pTHX_ IO *io, bool not_implicit)
927 if (IoTYPE(io) == IoTYPE_PIPE) {
928 status = PerlProc_pclose(IoIFP(io));
930 STATUS_NATIVE_SET(status);
931 retval = (STATUS_POSIX == 0);
934 retval = (status != -1);
937 else if (IoTYPE(io) == IoTYPE_STD)
940 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
941 retval = (PerlIO_close(IoOFP(io)) != EOF);
942 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
945 retval = (PerlIO_close(IoIFP(io)) != EOF);
947 IoOFP(io) = IoIFP(io) = Nullfp;
949 else if (not_implicit) {
950 SETERRNO(EBADF,SS$_IVCHAN);
957 Perl_do_eof(pTHX_ GV *gv)
966 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
968 /* integrate to report_evil_fh()? */
971 SV* sv = sv_newmortal();
972 gv_efullname4(sv, gv, Nullch, FALSE);
973 name = SvPV_nolen(sv);
976 Perl_warner(aTHX_ WARN_IO,
977 "Filehandle %s opened only for output", name);
979 Perl_warner(aTHX_ WARN_IO,
980 "Filehandle opened only for output");
985 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
986 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
987 return FALSE; /* this is the most usual case */
990 ch = PerlIO_getc(IoIFP(io));
992 (void)PerlIO_ungetc(IoIFP(io),ch);
996 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
997 if (PerlIO_get_cnt(IoIFP(io)) < -1)
998 PerlIO_set_cnt(IoIFP(io),-1);
1000 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
1001 if (!nextargv(PL_argvgv)) /* get another fp handy */
1005 return TRUE; /* normal fp, definitely end of file */
1011 Perl_do_tell(pTHX_ GV *gv)
1014 register PerlIO *fp;
1016 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1017 #ifdef ULTRIX_STDIO_BOTCH
1019 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1021 return PerlIO_tell(fp);
1023 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1024 report_evil_fh(gv, io, PL_op->op_type);
1025 SETERRNO(EBADF,RMS$_IFI);
1030 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1033 register PerlIO *fp;
1035 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1036 #ifdef ULTRIX_STDIO_BOTCH
1038 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1040 return PerlIO_seek(fp, pos, whence) >= 0;
1042 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1043 report_evil_fh(gv, io, PL_op->op_type);
1044 SETERRNO(EBADF,RMS$_IFI);
1049 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1052 register PerlIO *fp;
1054 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1055 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1056 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1057 report_evil_fh(gv, io, PL_op->op_type);
1058 SETERRNO(EBADF,RMS$_IFI);
1063 Perl_mode_from_discipline(pTHX_ SV *discp)
1065 int mode = O_BINARY;
1068 char *s = SvPV(discp,len);
1073 if (len > 3 && strnEQ(s+1, "raw", 3)
1074 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1083 if (len > 4 && strnEQ(s+1, "crlf", 4)
1084 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1093 goto fail_discipline;
1096 else if (isSPACE(*s)) {
1103 end = strchr(s+1, ':');
1106 #ifndef PERLIO_LAYERS
1107 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1118 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1120 /* The old body of this is now in non-LAYER part of perlio.c
1121 * This is a stub for any XS code which might have been calling it.
1123 char *name = (O_BINARY != O_TEXT && !(mode & O_BINARY)) ? ":crlf" : ":raw";
1124 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1127 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1128 /* code courtesy of William Kucharski */
1131 I32 my_chsize(fd, length)
1132 I32 fd; /* file descriptor */
1133 Off_t length; /* length to set file to */
1136 struct stat filebuf;
1138 if (PerlLIO_fstat(fd, &filebuf) < 0)
1141 if (filebuf.st_size < length) {
1143 /* extend file length */
1145 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1148 /* write a "0" byte */
1150 if ((PerlLIO_write(fd, "", 1)) != 1)
1154 /* truncate length */
1158 fl.l_start = length;
1159 fl.l_type = F_WRLCK; /* write lock on file space */
1162 * This relies on the UNDOCUMENTED F_FREESP argument to
1163 * fcntl(2), which truncates the file so that it ends at the
1164 * position indicated by fl.l_start.
1166 * Will minor miracles never cease?
1169 if (fcntl(fd, F_FREESP, &fl) < 0)
1176 #endif /* F_FREESP */
1179 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1181 register char *tmps;
1184 /* assuming fp is checked earlier */
1190 if (SvIOK(sv) && SvIVX(sv) != 0) {
1191 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1192 return !PerlIO_error(fp);
1194 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1195 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1196 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1197 return !PerlIO_error(fp);
1200 switch (SvTYPE(sv)) {
1202 if (ckWARN(WARN_UNINITIALIZED))
1210 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1212 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1213 return !PerlIO_error(fp);
1217 if (PerlIO_isutf8(fp)) {
1219 sv_utf8_upgrade(sv = sv_mortalcopy(sv));
1221 else if (DO_UTF8(sv)) {
1222 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)) {
1223 Perl_warner(aTHX_ WARN_UTF8, "Wide character in print");
1226 tmps = SvPV(sv, len);
1229 /* To detect whether the process is about to overstep its
1230 * filesize limit we would need getrlimit(). We could then
1231 * also transparently raise the limit with setrlimit() --
1232 * but only until the system hard limit/the filesystem limit,
1233 * at which we would get EPERM. Note that when using buffered
1234 * io the write failure can be delayed until the flush/close. --jhi */
1235 if (len && (PerlIO_write(fp,tmps,len) == 0))
1237 return !PerlIO_error(fp);
1247 if (PL_op->op_flags & OPf_REF) {
1252 if (io && IoIFP(io)) {
1254 sv_setpv(PL_statname,"");
1255 PL_laststype = OP_STAT;
1256 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1260 return PL_laststatval;
1261 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1262 report_evil_fh(gv, io, PL_op->op_type);
1264 sv_setpv(PL_statname,"");
1265 return (PL_laststatval = -1);
1273 if (SvTYPE(sv) == SVt_PVGV) {
1277 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1284 sv_setpv(PL_statname, s);
1285 PL_laststype = OP_STAT;
1286 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1287 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1288 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1289 return PL_laststatval;
1299 if (PL_op->op_flags & OPf_REF) {
1301 if (cGVOP_gv == PL_defgv) {
1302 if (PL_laststype != OP_LSTAT)
1303 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1304 return PL_laststatval;
1306 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1309 PL_laststype = OP_LSTAT;
1313 sv_setpv(PL_statname,SvPV(sv, n_a));
1314 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1315 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1316 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1317 return PL_laststatval;
1321 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1323 return do_aexec5(really, mark, sp, 0, 0);
1327 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1328 int fd, int do_report)
1330 #ifdef MACOS_TRADITIONAL
1331 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1338 New(401,PL_Argv, sp - mark + 1, char*);
1340 while (++mark <= sp) {
1342 *a++ = SvPVx(*mark, n_a);
1348 tmps = SvPV(really, n_a);
1349 if ((!really && *PL_Argv[0] != '/') ||
1350 (really && *tmps != '/')) /* will execvp use PATH? */
1351 TAINT_ENV(); /* testing IFS here is overkill, probably */
1352 if (really && *tmps)
1353 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1355 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1356 if (ckWARN(WARN_EXEC))
1357 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1358 (really ? tmps : PL_Argv[0]), Strerror(errno));
1362 PerlLIO_write(fd, (void*)&e, sizeof(int));
1372 Perl_do_execfree(pTHX)
1376 PL_Argv = Null(char **);
1384 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1387 Perl_do_exec(pTHX_ char *cmd)
1389 return do_exec3(cmd,0,0);
1393 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1399 while (*cmd && isSPACE(*cmd))
1402 /* save an extra exec if possible */
1405 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1407 s = cmd+PL_cshlen+3;
1421 if (s[-1] == '\'') {
1423 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1431 /* see if there are shell metacharacters in it */
1433 if (*cmd == '.' && isSPACE(cmd[1]))
1436 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1439 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1443 for (s = cmd; *s; s++) {
1444 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1445 if (*s == '\n' && !s[1]) {
1449 /* handle the 2>&1 construct at the end */
1450 if (*s == '>' && s[1] == '&' && s[2] == '1'
1451 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1452 && (!s[3] || isSPACE(s[3])))
1456 while (*t && isSPACE(*t))
1458 if (!*t && (dup2(1,2) != -1)) {
1464 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1469 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1470 PL_Cmd = savepvn(cmd, s-cmd);
1472 for (s = PL_Cmd; *s;) {
1473 while (*s && isSPACE(*s)) s++;
1476 while (*s && !isSPACE(*s)) s++;
1482 PerlProc_execvp(PL_Argv[0],PL_Argv);
1483 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1490 if (ckWARN(WARN_EXEC))
1491 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1492 PL_Argv[0], Strerror(errno));
1494 PerlLIO_write(fd, (void*)&e, sizeof(int));
1503 #endif /* OS2 || WIN32 */
1506 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1510 register I32 tot = 0;
1513 SV **oldmark = mark;
1516 #define APPLY_TAINT_PROPER() \
1518 if (PL_tainted) { TAINT_PROPER(what); } \
1521 /* This is a first heuristic; it doesn't catch tainting magic. */
1523 while (++mark <= sp) {
1524 if (SvTAINTED(*mark)) {
1534 APPLY_TAINT_PROPER();
1537 APPLY_TAINT_PROPER();
1539 while (++mark <= sp) {
1540 char *name = SvPVx(*mark, n_a);
1541 APPLY_TAINT_PROPER();
1542 if (PerlLIO_chmod(name, val))
1550 APPLY_TAINT_PROPER();
1551 if (sp - mark > 2) {
1552 val = SvIVx(*++mark);
1553 val2 = SvIVx(*++mark);
1554 APPLY_TAINT_PROPER();
1556 while (++mark <= sp) {
1557 char *name = SvPVx(*mark, n_a);
1558 APPLY_TAINT_PROPER();
1559 if (PerlLIO_chown(name, val, val2))
1566 XXX Should we make lchown() directly available from perl?
1567 For now, we'll let Configure test for HAS_LCHOWN, but do
1568 nothing in the core.
1574 APPLY_TAINT_PROPER();
1577 s = SvPVx(*++mark, n_a);
1579 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1581 if (!(val = whichsig(s)))
1582 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1586 APPLY_TAINT_PROPER();
1589 /* kill() doesn't do process groups (job trees?) under VMS */
1590 if (val < 0) val = -val;
1591 if (val == SIGKILL) {
1592 # include <starlet.h>
1593 /* Use native sys$delprc() to insure that target process is
1594 * deleted; supervisor-mode images don't pay attention to
1595 * CRTL's emulation of Unix-style signals and kill()
1597 while (++mark <= sp) {
1598 I32 proc = SvIVx(*mark);
1599 register unsigned long int __vmssts;
1600 APPLY_TAINT_PROPER();
1601 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1605 case SS$_NOSUCHNODE:
1606 SETERRNO(ESRCH,__vmssts);
1609 SETERRNO(EPERM,__vmssts);
1612 SETERRNO(EVMSERR,__vmssts);
1621 while (++mark <= sp) {
1622 I32 proc = SvIVx(*mark);
1623 APPLY_TAINT_PROPER();
1625 if (PerlProc_killpg(proc,val)) /* BSD */
1627 if (PerlProc_kill(-proc,val)) /* SYSV */
1633 while (++mark <= sp) {
1634 I32 proc = SvIVx(*mark);
1635 APPLY_TAINT_PROPER();
1636 if (PerlProc_kill(proc, val))
1644 APPLY_TAINT_PROPER();
1646 while (++mark <= sp) {
1647 s = SvPVx(*mark, n_a);
1648 APPLY_TAINT_PROPER();
1649 if (PL_euid || PL_unsafe) {
1653 else { /* don't let root wipe out directories without -U */
1654 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1666 APPLY_TAINT_PROPER();
1667 if (sp - mark > 2) {
1668 #if defined(I_UTIME) || defined(VMS)
1669 struct utimbuf utbuf;
1677 SV* accessed = *++mark;
1678 SV* modified = *++mark;
1679 void * utbufp = &utbuf;
1681 /* be like C, and if both times are undefined, let the C
1682 library figure out what to do. This usually means
1685 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1688 Zero(&utbuf, sizeof utbuf, char);
1690 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1691 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1693 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1694 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1696 APPLY_TAINT_PROPER();
1698 while (++mark <= sp) {
1699 char *name = SvPVx(*mark, n_a);
1700 APPLY_TAINT_PROPER();
1701 if (PerlLIO_utime(name, utbufp))
1712 #undef APPLY_TAINT_PROPER
1715 /* Do the permissions allow some operation? Assumes statcache already set. */
1716 #ifndef VMS /* VMS' cando is in vms.c */
1718 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1719 /* Note: we use `effective' both for uids and gids.
1720 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1723 /* [Comments and code from Len Reed]
1724 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1725 * to write-protected files. The execute permission bit is set
1726 * by the Miscrosoft C library stat() function for the following:
1731 * All files and directories are readable.
1732 * Directories and special files, e.g. "CON", cannot be
1734 * [Comment by Tom Dinger -- a directory can have the write-protect
1735 * bit set in the file system, but DOS permits changes to
1736 * the directory anyway. In addition, all bets are off
1737 * here for networked software, such as Novell and
1741 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1742 * too so it will actually look into the files for magic numbers
1744 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1746 #else /* ! DOSISH */
1747 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1748 if (mode == S_IXUSR) {
1749 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1753 return TRUE; /* root reads and writes anything */
1756 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1757 if (statbufp->st_mode & mode)
1758 return TRUE; /* ok as "user" */
1760 else if (ingroup(statbufp->st_gid,effective)) {
1761 if (statbufp->st_mode & mode >> 3)
1762 return TRUE; /* ok as "group" */
1764 else if (statbufp->st_mode & mode >> 6)
1765 return TRUE; /* ok as "other" */
1767 #endif /* ! DOSISH */
1772 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1774 #ifdef MACOS_TRADITIONAL
1775 /* This is simply not correct for AppleShare, but fix it yerself. */
1778 if (testgid == (effective ? PL_egid : PL_gid))
1780 #ifdef HAS_GETGROUPS
1785 Groups_t gary[NGROUPS];
1788 anum = getgroups(NGROUPS,gary);
1790 if (gary[anum] == testgid)
1798 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1801 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1806 key = (key_t)SvNVx(*++mark);
1807 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1808 flags = SvIVx(*++mark);
1814 return msgget(key, flags);
1818 return semget(key, n, flags);
1822 return shmget(key, n, flags);
1824 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1826 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1829 return -1; /* should never happen */
1833 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1837 I32 id, n, cmd, infosize, getinfo;
1840 id = SvIVx(*++mark);
1841 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1842 cmd = SvIVx(*++mark);
1845 getinfo = (cmd == IPC_STAT);
1851 if (cmd == IPC_STAT || cmd == IPC_SET)
1852 infosize = sizeof(struct msqid_ds);
1857 if (cmd == IPC_STAT || cmd == IPC_SET)
1858 infosize = sizeof(struct shmid_ds);
1864 if (cmd == IPC_STAT || cmd == IPC_SET)
1865 infosize = sizeof(struct semid_ds);
1866 else if (cmd == GETALL || cmd == SETALL)
1868 struct semid_ds semds;
1870 #ifdef EXTRA_F_IN_SEMUN_BUF
1871 semun.buff = &semds;
1875 getinfo = (cmd == GETALL);
1876 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1878 infosize = semds.sem_nsems * sizeof(short);
1879 /* "short" is technically wrong but much more portable
1880 than guessing about u_?short(_t)? */
1883 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1887 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1889 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1898 SvPV_force(astr, len);
1899 a = SvGROW(astr, infosize+1);
1903 a = SvPV(astr, len);
1904 if (len != infosize)
1905 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1914 a = INT2PTR(char *,i); /* ouch */
1921 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1927 union semun unsemds;
1929 #ifdef EXTRA_F_IN_SEMUN_BUF
1930 unsemds.buff = (struct semid_ds *)a;
1932 unsemds.buf = (struct semid_ds *)a;
1934 ret = Semctl(id, n, cmd, unsemds);
1936 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1943 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1947 if (getinfo && ret >= 0) {
1948 SvCUR_set(astr, infosize);
1949 *SvEND(astr) = '\0';
1956 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1961 I32 id, msize, flags;
1964 id = SvIVx(*++mark);
1966 flags = SvIVx(*++mark);
1967 mbuf = SvPV(mstr, len);
1968 if ((msize = len - sizeof(long)) < 0)
1969 Perl_croak(aTHX_ "Arg too short for msgsnd");
1971 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1973 Perl_croak(aTHX_ "msgsnd not implemented");
1978 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1984 I32 id, msize, flags, ret;
1987 id = SvIVx(*++mark);
1989 /* suppress warning when reading into undef var --jhi */
1991 sv_setpvn(mstr, "", 0);
1992 msize = SvIVx(*++mark);
1993 mtype = (long)SvIVx(*++mark);
1994 flags = SvIVx(*++mark);
1995 SvPV_force(mstr, len);
1996 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1999 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
2001 SvCUR_set(mstr, sizeof(long)+ret);
2002 *SvEND(mstr) = '\0';
2003 #ifndef INCOMPLETE_TAINTS
2004 /* who knows who has been playing with this message? */
2010 Perl_croak(aTHX_ "msgrcv not implemented");
2015 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2023 id = SvIVx(*++mark);
2025 opbuf = SvPV(opstr, opsize);
2026 if (opsize < sizeof(struct sembuf)
2027 || (opsize % sizeof(struct sembuf)) != 0) {
2028 SETERRNO(EINVAL,LIB$_INVARG);
2032 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
2034 Perl_croak(aTHX_ "semop not implemented");
2039 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2044 I32 id, mpos, msize;
2046 struct shmid_ds shmds;
2048 id = SvIVx(*++mark);
2050 mpos = SvIVx(*++mark);
2051 msize = SvIVx(*++mark);
2053 if (shmctl(id, IPC_STAT, &shmds) == -1)
2055 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2056 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2059 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2060 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2062 if (optype == OP_SHMREAD) {
2063 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2065 sv_setpvn(mstr, "", 0);
2066 SvPV_force(mstr, len);
2067 mbuf = SvGROW(mstr, msize+1);
2069 Copy(shm + mpos, mbuf, msize, char);
2070 SvCUR_set(mstr, msize);
2071 *SvEND(mstr) = '\0';
2073 #ifndef INCOMPLETE_TAINTS
2074 /* who knows who has been playing with this shared memory? */
2081 mbuf = SvPV(mstr, len);
2082 if ((n = len) > msize)
2084 Copy(mbuf, shm + mpos, n, char);
2086 memzero(shm + mpos + n, msize - n);
2090 Perl_croak(aTHX_ "shm I/O not implemented");
2094 #endif /* SYSV IPC */
2097 =for apidoc start_glob
2099 Function called by C<do_readline> to spawn a glob (or do the glob inside
2100 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2101 this glob starter is only used by miniperl during the build proccess.
2102 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2108 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2110 SV *tmpcmd = NEWSV(55, 0);
2114 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2115 /* since spawning off a process is a real performance hit */
2117 #include <descrip.h>
2118 #include <lib$routines.h>
2121 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2122 char vmsspec[NAM$C_MAXRSS+1];
2123 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2124 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2127 struct dsc$descriptor_s wilddsc
2128 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2129 struct dsc$descriptor_vs rsdsc
2130 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2131 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2133 /* We could find out if there's an explicit dev/dir or version
2134 by peeking into lib$find_file's internal context at
2135 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2136 but that's unsupported, so I don't want to do it now and
2137 have it bite someone in the future. */
2138 cp = SvPV(tmpglob,i);
2140 if (cp[i] == ';') hasver = 1;
2142 if (sts) hasver = 1;
2146 hasdir = isunix = 1;
2149 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2154 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2156 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2157 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2158 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2159 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2160 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2161 &dfltdsc,NULL,NULL,NULL))&1)) {
2162 end = rstr + (unsigned long int) *rslt;
2163 if (!hasver) while (*end != ';') end--;
2164 *(end++) = '\n'; *end = '\0';
2165 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2167 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2172 while (*(--begin) != ']' && *begin != '>') ;
2175 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2177 if (cxt) (void)lib$find_file_end(&cxt);
2178 if (ok && sts != RMS$_NMF &&
2179 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
2182 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2184 PerlIO_close(tmpfp);
2188 PerlIO_rewind(tmpfp);
2189 IoTYPE(io) = IoTYPE_RDONLY;
2190 IoIFP(io) = fp = tmpfp;
2191 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2196 #ifdef MACOS_TRADITIONAL
2197 sv_setpv(tmpcmd, "glob ");
2198 sv_catsv(tmpcmd, tmpglob);
2199 sv_catpv(tmpcmd, " |");
2203 sv_setpv(tmpcmd, "for a in ");
2204 sv_catsv(tmpcmd, tmpglob);
2205 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2208 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2209 sv_catsv(tmpcmd, tmpglob);
2211 sv_setpv(tmpcmd, "perlglob ");
2212 sv_catsv(tmpcmd, tmpglob);
2213 sv_catpv(tmpcmd, " |");
2218 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2219 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2220 sv_catsv(tmpcmd, tmpglob);
2221 sv_catpv(tmpcmd, "' 2>/dev/null |");
2223 sv_setpv(tmpcmd, "echo ");
2224 sv_catsv(tmpcmd, tmpglob);
2226 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2228 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2231 #endif /* !DOSISH */
2232 #endif /* MACOS_TRADITIONAL */
2233 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2234 FALSE, O_RDONLY, 0, Nullfp);