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);
71 static char *S_layers(pTHX_ char *mode);
74 S_layers(pTHX_ char *mode)
77 /* Need to supply default layer info from open.pm */
78 SV *layers = PL_curcop->cop_io;
81 type = SvPV(layers,len);
82 if (type && mode[0] != 'r') {
83 /* Skip to write part */
84 char *s = strchr(type,0);
85 if (s && (s-type) < len) {
94 Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
95 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
98 register IO *io = GvIOn(gv);
99 PerlIO *saveifp = Nullfp;
100 PerlIO *saveofp = Nullfp;
102 char savetype = IoTYPE_CLOSED;
107 bool was_fdopen = FALSE;
108 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
110 char mode[8]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
113 Zero(mode,sizeof(mode),char);
114 PL_forkprocess = 1; /* assume true if no fork */
116 /* Collect default raw/crlf info from the op */
117 if (PL_op && PL_op->op_type == OP_OPEN) {
118 /* set up disciplines */
119 U8 flags = PL_op->op_private;
120 in_raw = (flags & OPpOPEN_IN_RAW);
121 in_crlf = (flags & OPpOPEN_IN_CRLF);
122 out_raw = (flags & OPpOPEN_OUT_RAW);
123 out_crlf = (flags & OPpOPEN_OUT_CRLF);
126 /* If currently open - close before we re-open */
128 fd = PerlIO_fileno(IoIFP(io));
129 if (IoTYPE(io) == IoTYPE_STD) {
130 /* This is a clone of one of STD* handles */
133 else if (fd >= 0 && fd <= PL_maxsysfd) {
134 /* This is one of the original STD* handles */
137 savetype = IoTYPE(io);
141 else if (IoTYPE(io) == IoTYPE_PIPE)
142 result = PerlProc_pclose(IoIFP(io));
143 else if (IoIFP(io) != IoOFP(io)) {
145 result = PerlIO_close(IoOFP(io));
146 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
149 result = PerlIO_close(IoIFP(io));
152 result = PerlIO_close(IoIFP(io));
153 if (result == EOF && fd > PL_maxsysfd) {
154 /* Why is this not Perl_warn*() call ? */
155 PerlIO_printf(Perl_error_log,
156 "Warning: unable to close filehandle %s properly.\n",
159 IoOFP(io) = IoIFP(io) = Nullfp;
163 /* sysopen style args, i.e. integer mode and permissions */
166 Perl_croak(aTHX_ "panic:sysopen with multiple args");
168 mode[ix++] = '#'; /* Marker to openn to use numeric "sysopen" */
170 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
171 rawmode |= O_LARGEFILE;
175 #define O_ACCMODE 3 /* Assume traditional implementation */
178 switch (result = rawmode & O_ACCMODE) {
180 IoTYPE(io) = IoTYPE_RDONLY;
183 IoTYPE(io) = IoTYPE_WRONLY;
187 IoTYPE(io) = IoTYPE_RDWR;
190 writing = (result > 0);
192 if (result == O_RDONLY) {
196 else if (rawmode & O_APPEND) {
198 if (result != O_WRONLY)
203 if (result == O_WRONLY)
210 if (rawmode & O_BINARY)
214 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
217 fp = PerlIO_openn(aTHX_ S_layers(aTHX_ mode),mode, -1, rawmode, rawperm, saveifp, num_svs, svp);
220 /* Regular (non-sys) open */
226 type = savepvn(name, len);
229 /* Loose trailing white space */
230 while (tend > type && isSPACE(tend[-1]))
233 /* New style explict name, type is just mode and discipline/layer info */
235 name = SvPV(*svp, l) ;
237 name = savepvn(name, len);
240 for (; isSPACE(*type); type++) ;
247 if ((*type == IoTYPE_RDWR) && ((!num_svs || tend > type+1 && tend[-1] != IoTYPE_PIPE))) { /* scary */
252 if (*type == IoTYPE_PIPE) {
254 if (type[1] != IoTYPE_STD) {
256 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
261 for (type++; isSPACE(*type); type++) ;
267 /* command is missing 19990114 */
268 if (ckWARN(WARN_PIPE))
269 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
273 if (strNE(name,"-") || num_svs)
275 TAINT_PROPER("piped open");
276 if (!num_svs && name[len-1] == '|') {
278 if (ckWARN(WARN_PIPE))
279 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
288 fp = PerlProc_popen_list(mode, num_svs, svp);
291 fp = PerlProc_popen(name,mode);
294 else if (*type == IoTYPE_WRONLY) {
295 TAINT_PROPER("open");
297 if (*type == IoTYPE_WRONLY) {
298 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
299 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
320 if (!num_svs && !*type && supplied_fp) {
321 /* "<+&" etc. is used by typemaps */
326 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
328 if (num_svs && SvIOK(*svp)) {
331 else if (isDIGIT(*type)) {
333 for (; isSPACE(*type); type++) ;
339 thatio = sv_2io(*svp);
344 for (; isSPACE(*type); type++) ;
345 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
346 thatio = GvIO(thatgv);
350 SETERRNO(EINVAL,SS$_IVCHAN);
355 PerlIO *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(fp, 0, SEEK_CUR) == -1)
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 */
373 fd = PerlIO_fileno(fp);
374 /* When dup()ing STDIN, STDOUT or STDERR
375 * explicitly set appropriate access mode */
376 if (IoIFP(thatio) == PerlIO_stdout()
377 || IoIFP(thatio) == PerlIO_stderr())
378 IoTYPE(io) = IoTYPE_WRONLY;
379 else if (IoIFP(thatio) == 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;
390 fd = PerlLIO_dup(fd);
394 type = S_layers(aTHX_ mode);
395 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
403 Perl_croak(aTHX_ "More than one argument to '>' open");
406 for (; isSPACE(*type); type++) ;
407 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
410 fp = PerlIO_stdout();
411 IoTYPE(io) = IoTYPE_STD;
415 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
418 type = S_layers(aTHX_ mode);
420 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,saveifp,num_svs,svp);
424 else if (*type == IoTYPE_RDONLY) {
426 Perl_croak(aTHX_ "More than one argument to '<' open");
429 for (type++; isSPACE(*type); type++) ;
439 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
443 IoTYPE(io) = IoTYPE_STD;
447 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
450 type = S_layers(aTHX_ mode);
452 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,saveifp,num_svs,svp);
455 else if ((num_svs && type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
456 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
458 type += 2; /* skip over '-|' */
462 while (tend > type && isSPACE(tend[-1]))
465 for (; isSPACE(*type); type++) ;
470 /* command is missing 19990114 */
471 if (ckWARN(WARN_PIPE))
472 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
476 if (strNE(name,"-") || num_svs)
478 TAINT_PROPER("piped open");
485 fp = PerlProc_popen_list(mode,num_svs,svp);
488 fp = PerlProc_popen(name,mode);
490 IoTYPE(io) = IoTYPE_PIPE;
496 IoTYPE(io) = IoTYPE_RDONLY;
498 for (; isSPACE(*name); name++) ;
504 if (strEQ(name,"-")) {
506 IoTYPE(io) = IoTYPE_STD;
510 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
513 type = S_layers(aTHX_ mode);
515 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,saveifp,num_svs,svp);
520 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
521 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
525 if (ckWARN(WARN_IO)) {
526 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
527 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
528 Perl_warner(aTHX_ WARN_IO, "'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_ WARN_IO, "'stdin' opened only for output");
536 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD) {
537 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
538 (void)PerlIO_close(fp);
541 if (S_ISSOCK(PL_statbuf.st_mode))
542 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
546 !(PL_statbuf.st_mode & S_IFMT)
550 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
551 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
552 ) { /* on OS's that return 0 on fstat()ed pipe */
554 Sock_size_t buflen = sizeof tmpbuf;
555 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
557 || errno != ENOTSOCK)
558 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
559 /* but some return 0 for streams too, sigh */
563 if (saveifp) { /* must use old fp? */
564 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
565 then dup the new fileno down
568 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
569 if (saveofp != saveifp) { /* was a socket? */
570 PerlIO_close(saveofp);
573 if (savefd != PerlIO_fileno(fp)) {
577 PerlLIO_dup2(PerlIO_fileno(fp), fd);
579 if (fd != PerlIO_fileno(PerlIO_stdin())) {
580 char newname[FILENAME_MAX+1];
581 if (fgetname(fp, newname)) {
582 if (fd == PerlIO_fileno(PerlIO_stdout())) Perl_vmssetuserlnm("SYS$OUTPUT", newname);
583 if (fd == PerlIO_fileno(PerlIO_stderr())) Perl_vmssetuserlnm("SYS$ERROR", newname);
588 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
589 (void)SvUPGRADE(sv, SVt_IV);
592 sv = *av_fetch(PL_fdpid,fd,TRUE);
594 (void)SvUPGRADE(sv, SVt_IV);
602 #if defined(HAS_FCNTL) && defined(F_SETFD)
604 int save_errno = errno;
605 fd = PerlIO_fileno(fp);
606 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
612 IoFLAGS(io) &= ~IOf_NOLINE;
614 if (IoTYPE(io) == IoTYPE_SOCKET
615 || (IoTYPE(io) == IoTYPE_WRONLY && S_ISCHR(PL_statbuf.st_mode)) ) {
617 if (!(IoOFP(io) = PerlIO_openn(aTHX_ S_layers(aTHX_ mode),mode,PerlIO_fileno(fp),0,0,saveofp,num_svs,svp))) {
631 IoTYPE(io) = savetype;
636 Perl_nextargv(pTHX_ register GV *gv)
639 #ifndef FLEXFILENAMES
648 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
649 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
650 IoFLAGS(io) &= ~IOf_START;
652 if (!PL_argvout_stack)
653 PL_argvout_stack = newAV();
654 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
657 if (PL_filemode & (S_ISUID|S_ISGID)) {
658 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
660 (void)fchmod(PL_lastfd,PL_filemode);
662 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
666 while (av_len(GvAV(gv)) >= 0) {
668 sv = av_shift(GvAV(gv));
670 sv_setsv(GvSV(gv),sv);
671 SvSETMAGIC(GvSV(gv));
672 PL_oldname = SvPVx(GvSV(gv), oldlen);
673 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
675 TAINT_PROPER("inplace open");
676 if (oldlen == 1 && *PL_oldname == '-') {
677 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
678 return IoIFP(GvIOp(gv));
680 #ifndef FLEXFILENAMES
681 filedev = PL_statbuf.st_dev;
682 fileino = PL_statbuf.st_ino;
684 PL_filemode = PL_statbuf.st_mode;
685 fileuid = PL_statbuf.st_uid;
686 filegid = PL_statbuf.st_gid;
687 if (!S_ISREG(PL_filemode)) {
688 if (ckWARN_d(WARN_INPLACE))
689 Perl_warner(aTHX_ WARN_INPLACE,
690 "Can't do inplace edit: %s is not a regular file",
696 char *star = strchr(PL_inplace, '*');
698 char *begin = PL_inplace;
699 sv_setpvn(sv, "", 0);
701 sv_catpvn(sv, begin, star - begin);
702 sv_catpvn(sv, PL_oldname, oldlen);
704 } while ((star = strchr(begin, '*')));
709 sv_catpv(sv,PL_inplace);
711 #ifndef FLEXFILENAMES
712 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
713 && PL_statbuf.st_dev == filedev
714 && PL_statbuf.st_ino == fileino
716 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
720 if (ckWARN_d(WARN_INPLACE))
721 Perl_warner(aTHX_ WARN_INPLACE,
722 "Can't do inplace edit: %s would not be unique",
729 #if !defined(DOSISH) && !defined(__CYGWIN__)
730 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
731 if (ckWARN_d(WARN_INPLACE))
732 Perl_warner(aTHX_ WARN_INPLACE,
733 "Can't rename %s to %s: %s, skipping file",
734 PL_oldname, SvPVX(sv), Strerror(errno) );
740 (void)PerlLIO_unlink(SvPVX(sv));
741 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
742 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
745 (void)UNLINK(SvPVX(sv));
746 if (link(PL_oldname,SvPVX(sv)) < 0) {
747 if (ckWARN_d(WARN_INPLACE))
748 Perl_warner(aTHX_ WARN_INPLACE,
749 "Can't rename %s to %s: %s, skipping file",
750 PL_oldname, SvPVX(sv), Strerror(errno) );
754 (void)UNLINK(PL_oldname);
758 #if !defined(DOSISH) && !defined(AMIGAOS)
759 # ifndef VMS /* Don't delete; use automatic file versioning */
760 if (UNLINK(PL_oldname) < 0) {
761 if (ckWARN_d(WARN_INPLACE))
762 Perl_warner(aTHX_ WARN_INPLACE,
763 "Can't remove %s: %s, skipping file",
764 PL_oldname, Strerror(errno) );
770 Perl_croak(aTHX_ "Can't do inplace edit without backup");
774 sv_setpvn(sv,">",!PL_inplace);
775 sv_catpvn(sv,PL_oldname,oldlen);
776 SETERRNO(0,0); /* in case sprintf set errno */
778 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
779 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
781 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
782 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
785 if (ckWARN_d(WARN_INPLACE))
786 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
787 PL_oldname, Strerror(errno) );
791 setdefout(PL_argvoutgv);
792 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
793 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
795 (void)fchmod(PL_lastfd,PL_filemode);
797 # if !(defined(WIN32) && defined(__BORLANDC__))
798 /* Borland runtime creates a readonly file! */
799 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
802 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
804 (void)fchown(PL_lastfd,fileuid,filegid);
807 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
812 return IoIFP(GvIOp(gv));
815 if (ckWARN_d(WARN_INPLACE)) {
817 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
818 && !S_ISREG(PL_statbuf.st_mode))
820 Perl_warner(aTHX_ WARN_INPLACE,
821 "Can't do inplace edit: %s is not a regular file",
825 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
826 PL_oldname, Strerror(eno));
830 if (io && (IoFLAGS(io) & IOf_ARGV))
831 IoFLAGS(io) |= IOf_START;
833 (void)do_close(PL_argvoutgv,FALSE);
834 if (io && (IoFLAGS(io) & IOf_ARGV)
835 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
837 GV *oldout = (GV*)av_pop(PL_argvout_stack);
839 SvREFCNT_dec(oldout);
842 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
849 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
868 if (PerlProc_pipe(fd) < 0)
870 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
871 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
872 IoIFP(wstio) = IoOFP(wstio);
873 IoTYPE(rstio) = IoTYPE_RDONLY;
874 IoTYPE(wstio) = IoTYPE_WRONLY;
875 if (!IoIFP(rstio) || !IoOFP(wstio)) {
876 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
877 else PerlLIO_close(fd[0]);
878 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
879 else PerlLIO_close(fd[1]);
883 sv_setsv(sv,&PL_sv_yes);
887 sv_setsv(sv,&PL_sv_undef);
892 /* explicit renamed to avoid C++ conflict -- kja */
894 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
901 if (!gv || SvTYPE(gv) != SVt_PVGV) {
903 SETERRNO(EBADF,SS$_IVCHAN);
907 if (!io) { /* never opened */
909 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
910 report_evil_fh(gv, io, PL_op->op_type);
911 SETERRNO(EBADF,SS$_IVCHAN);
915 retval = io_close(io, not_implicit);
919 IoLINES_LEFT(io) = IoPAGE_LEN(io);
921 IoTYPE(io) = IoTYPE_CLOSED;
926 Perl_io_close(pTHX_ IO *io, bool not_implicit)
932 if (IoTYPE(io) == IoTYPE_PIPE) {
933 status = PerlProc_pclose(IoIFP(io));
935 STATUS_NATIVE_SET(status);
936 retval = (STATUS_POSIX == 0);
939 retval = (status != -1);
942 else if (IoTYPE(io) == IoTYPE_STD)
945 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
946 retval = (PerlIO_close(IoOFP(io)) != EOF);
947 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
950 retval = (PerlIO_close(IoIFP(io)) != EOF);
952 IoOFP(io) = IoIFP(io) = Nullfp;
954 else if (not_implicit) {
955 SETERRNO(EBADF,SS$_IVCHAN);
962 Perl_do_eof(pTHX_ GV *gv)
971 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
973 /* integrate to report_evil_fh()? */
976 SV* sv = sv_newmortal();
977 gv_efullname4(sv, gv, Nullch, FALSE);
978 name = SvPV_nolen(sv);
981 Perl_warner(aTHX_ WARN_IO,
982 "Filehandle %s opened only for output", name);
984 Perl_warner(aTHX_ WARN_IO,
985 "Filehandle opened only for output");
990 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
991 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
992 return FALSE; /* this is the most usual case */
995 ch = PerlIO_getc(IoIFP(io));
997 (void)PerlIO_ungetc(IoIFP(io),ch);
1001 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
1002 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1003 PerlIO_set_cnt(IoIFP(io),-1);
1005 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
1006 if (!nextargv(PL_argvgv)) /* get another fp handy */
1010 return TRUE; /* normal fp, definitely end of file */
1016 Perl_do_tell(pTHX_ GV *gv)
1019 register PerlIO *fp;
1021 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1022 #ifdef ULTRIX_STDIO_BOTCH
1024 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1026 return PerlIO_tell(fp);
1028 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1029 report_evil_fh(gv, io, PL_op->op_type);
1030 SETERRNO(EBADF,RMS$_IFI);
1035 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1038 register PerlIO *fp;
1040 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1041 #ifdef ULTRIX_STDIO_BOTCH
1043 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1045 return PerlIO_seek(fp, pos, whence) >= 0;
1047 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1048 report_evil_fh(gv, io, PL_op->op_type);
1049 SETERRNO(EBADF,RMS$_IFI);
1054 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1057 register PerlIO *fp;
1059 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1060 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1061 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1062 report_evil_fh(gv, io, PL_op->op_type);
1063 SETERRNO(EBADF,RMS$_IFI);
1068 Perl_mode_from_discipline(pTHX_ SV *discp)
1070 int mode = O_BINARY;
1073 char *s = SvPV(discp,len);
1078 if (len > 3 && strnEQ(s+1, "raw", 3)
1079 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1088 if (len > 4 && strnEQ(s+1, "crlf", 4)
1089 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1098 goto fail_discipline;
1101 else if (isSPACE(*s)) {
1108 end = strchr(s+1, ':');
1111 #ifndef PERLIO_LAYERS
1112 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1123 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1125 /* The old body of this is now in non-LAYER part of perlio.c
1126 * This is a stub for any XS code which might have been calling it.
1128 char *name = (O_BINARY != O_TEXT && !(mode & O_BINARY)) ? ":crlf" : ":raw";
1129 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1132 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1133 /* code courtesy of William Kucharski */
1136 I32 my_chsize(fd, length)
1137 I32 fd; /* file descriptor */
1138 Off_t length; /* length to set file to */
1141 struct stat filebuf;
1143 if (PerlLIO_fstat(fd, &filebuf) < 0)
1146 if (filebuf.st_size < length) {
1148 /* extend file length */
1150 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1153 /* write a "0" byte */
1155 if ((PerlLIO_write(fd, "", 1)) != 1)
1159 /* truncate length */
1163 fl.l_start = length;
1164 fl.l_type = F_WRLCK; /* write lock on file space */
1167 * This relies on the UNDOCUMENTED F_FREESP argument to
1168 * fcntl(2), which truncates the file so that it ends at the
1169 * position indicated by fl.l_start.
1171 * Will minor miracles never cease?
1174 if (fcntl(fd, F_FREESP, &fl) < 0)
1181 #endif /* F_FREESP */
1184 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1186 register char *tmps;
1189 /* assuming fp is checked earlier */
1195 if (SvIOK(sv) && SvIVX(sv) != 0) {
1196 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1197 return !PerlIO_error(fp);
1199 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1200 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1201 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1202 return !PerlIO_error(fp);
1205 switch (SvTYPE(sv)) {
1207 if (ckWARN(WARN_UNINITIALIZED))
1215 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1217 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1218 return !PerlIO_error(fp);
1222 if (PerlIO_isutf8(fp)) {
1224 sv_utf8_upgrade(sv = sv_mortalcopy(sv));
1226 else if (DO_UTF8(sv))
1227 sv_utf8_downgrade((sv = sv_mortalcopy(sv)), FALSE);
1228 tmps = SvPV(sv, len);
1231 /* To detect whether the process is about to overstep its
1232 * filesize limit we would need getrlimit(). We could then
1233 * also transparently raise the limit with setrlimit() --
1234 * but only until the system hard limit/the filesystem limit,
1235 * at which we would get EPERM. Note that when using buffered
1236 * io the write failure can be delayed until the flush/close. --jhi */
1237 if (len && (PerlIO_write(fp,tmps,len) == 0))
1239 return !PerlIO_error(fp);
1249 if (PL_op->op_flags & OPf_REF) {
1254 if (io && IoIFP(io)) {
1256 sv_setpv(PL_statname,"");
1257 PL_laststype = OP_STAT;
1258 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1262 return PL_laststatval;
1263 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1264 report_evil_fh(gv, io, PL_op->op_type);
1266 sv_setpv(PL_statname,"");
1267 return (PL_laststatval = -1);
1275 if (SvTYPE(sv) == SVt_PVGV) {
1279 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1286 sv_setpv(PL_statname, s);
1287 PL_laststype = OP_STAT;
1288 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1289 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1290 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1291 return PL_laststatval;
1301 if (PL_op->op_flags & OPf_REF) {
1303 if (cGVOP_gv == PL_defgv) {
1304 if (PL_laststype != OP_LSTAT)
1305 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1306 return PL_laststatval;
1308 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1311 PL_laststype = OP_LSTAT;
1315 sv_setpv(PL_statname,SvPV(sv, n_a));
1316 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1317 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1318 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1319 return PL_laststatval;
1323 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1325 return do_aexec5(really, mark, sp, 0, 0);
1329 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1330 int fd, int do_report)
1332 #ifdef MACOS_TRADITIONAL
1333 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1340 New(401,PL_Argv, sp - mark + 1, char*);
1342 while (++mark <= sp) {
1344 *a++ = SvPVx(*mark, n_a);
1350 tmps = SvPV(really, n_a);
1351 if ((!really && *PL_Argv[0] != '/') ||
1352 (really && *tmps != '/')) /* will execvp use PATH? */
1353 TAINT_ENV(); /* testing IFS here is overkill, probably */
1354 if (really && *tmps)
1355 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1357 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1358 if (ckWARN(WARN_EXEC))
1359 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1360 (really ? tmps : PL_Argv[0]), Strerror(errno));
1364 PerlLIO_write(fd, (void*)&e, sizeof(int));
1374 Perl_do_execfree(pTHX)
1378 PL_Argv = Null(char **);
1386 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1389 Perl_do_exec(pTHX_ char *cmd)
1391 return do_exec3(cmd,0,0);
1395 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1401 while (*cmd && isSPACE(*cmd))
1404 /* save an extra exec if possible */
1407 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1409 s = cmd+PL_cshlen+3;
1423 if (s[-1] == '\'') {
1425 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1433 /* see if there are shell metacharacters in it */
1435 if (*cmd == '.' && isSPACE(cmd[1]))
1438 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1441 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1445 for (s = cmd; *s; s++) {
1446 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1447 if (*s == '\n' && !s[1]) {
1451 /* handle the 2>&1 construct at the end */
1452 if (*s == '>' && s[1] == '&' && s[2] == '1'
1453 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1454 && (!s[3] || isSPACE(s[3])))
1458 while (*t && isSPACE(*t))
1460 if (!*t && (dup2(1,2) != -1)) {
1466 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1471 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1472 PL_Cmd = savepvn(cmd, s-cmd);
1474 for (s = PL_Cmd; *s;) {
1475 while (*s && isSPACE(*s)) s++;
1478 while (*s && !isSPACE(*s)) s++;
1484 PerlProc_execvp(PL_Argv[0],PL_Argv);
1485 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1492 if (ckWARN(WARN_EXEC))
1493 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1494 PL_Argv[0], Strerror(errno));
1496 PerlLIO_write(fd, (void*)&e, sizeof(int));
1505 #endif /* OS2 || WIN32 */
1508 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1512 register I32 tot = 0;
1515 SV **oldmark = mark;
1518 #define APPLY_TAINT_PROPER() \
1520 if (PL_tainted) { TAINT_PROPER(what); } \
1523 /* This is a first heuristic; it doesn't catch tainting magic. */
1525 while (++mark <= sp) {
1526 if (SvTAINTED(*mark)) {
1536 APPLY_TAINT_PROPER();
1539 APPLY_TAINT_PROPER();
1541 while (++mark <= sp) {
1542 char *name = SvPVx(*mark, n_a);
1543 APPLY_TAINT_PROPER();
1544 if (PerlLIO_chmod(name, val))
1552 APPLY_TAINT_PROPER();
1553 if (sp - mark > 2) {
1554 val = SvIVx(*++mark);
1555 val2 = SvIVx(*++mark);
1556 APPLY_TAINT_PROPER();
1558 while (++mark <= sp) {
1559 char *name = SvPVx(*mark, n_a);
1560 APPLY_TAINT_PROPER();
1561 if (PerlLIO_chown(name, val, val2))
1568 XXX Should we make lchown() directly available from perl?
1569 For now, we'll let Configure test for HAS_LCHOWN, but do
1570 nothing in the core.
1576 APPLY_TAINT_PROPER();
1579 s = SvPVx(*++mark, n_a);
1581 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1583 if (!(val = whichsig(s)))
1584 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1588 APPLY_TAINT_PROPER();
1591 /* kill() doesn't do process groups (job trees?) under VMS */
1592 if (val < 0) val = -val;
1593 if (val == SIGKILL) {
1594 # include <starlet.h>
1595 /* Use native sys$delprc() to insure that target process is
1596 * deleted; supervisor-mode images don't pay attention to
1597 * CRTL's emulation of Unix-style signals and kill()
1599 while (++mark <= sp) {
1600 I32 proc = SvIVx(*mark);
1601 register unsigned long int __vmssts;
1602 APPLY_TAINT_PROPER();
1603 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1607 case SS$_NOSUCHNODE:
1608 SETERRNO(ESRCH,__vmssts);
1611 SETERRNO(EPERM,__vmssts);
1614 SETERRNO(EVMSERR,__vmssts);
1623 while (++mark <= sp) {
1624 I32 proc = SvIVx(*mark);
1625 APPLY_TAINT_PROPER();
1627 if (PerlProc_killpg(proc,val)) /* BSD */
1629 if (PerlProc_kill(-proc,val)) /* SYSV */
1635 while (++mark <= sp) {
1636 I32 proc = SvIVx(*mark);
1637 APPLY_TAINT_PROPER();
1638 if (PerlProc_kill(proc, val))
1646 APPLY_TAINT_PROPER();
1648 while (++mark <= sp) {
1649 s = SvPVx(*mark, n_a);
1650 APPLY_TAINT_PROPER();
1651 if (PL_euid || PL_unsafe) {
1655 else { /* don't let root wipe out directories without -U */
1656 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1668 APPLY_TAINT_PROPER();
1669 if (sp - mark > 2) {
1670 #if defined(I_UTIME) || defined(VMS)
1671 struct utimbuf utbuf;
1679 Zero(&utbuf, sizeof utbuf, char);
1681 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1682 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1684 utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */
1685 utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */
1687 APPLY_TAINT_PROPER();
1689 while (++mark <= sp) {
1690 char *name = SvPVx(*mark, n_a);
1691 APPLY_TAINT_PROPER();
1692 if (PerlLIO_utime(name, &utbuf))
1703 #undef APPLY_TAINT_PROPER
1706 /* Do the permissions allow some operation? Assumes statcache already set. */
1707 #ifndef VMS /* VMS' cando is in vms.c */
1709 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1710 /* Note: we use `effective' both for uids and gids.
1711 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1714 /* [Comments and code from Len Reed]
1715 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1716 * to write-protected files. The execute permission bit is set
1717 * by the Miscrosoft C library stat() function for the following:
1722 * All files and directories are readable.
1723 * Directories and special files, e.g. "CON", cannot be
1725 * [Comment by Tom Dinger -- a directory can have the write-protect
1726 * bit set in the file system, but DOS permits changes to
1727 * the directory anyway. In addition, all bets are off
1728 * here for networked software, such as Novell and
1732 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1733 * too so it will actually look into the files for magic numbers
1735 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1737 #else /* ! DOSISH */
1738 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1739 if (mode == S_IXUSR) {
1740 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1744 return TRUE; /* root reads and writes anything */
1747 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1748 if (statbufp->st_mode & mode)
1749 return TRUE; /* ok as "user" */
1751 else if (ingroup(statbufp->st_gid,effective)) {
1752 if (statbufp->st_mode & mode >> 3)
1753 return TRUE; /* ok as "group" */
1755 else if (statbufp->st_mode & mode >> 6)
1756 return TRUE; /* ok as "other" */
1758 #endif /* ! DOSISH */
1763 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1765 #ifdef MACOS_TRADITIONAL
1766 /* This is simply not correct for AppleShare, but fix it yerself. */
1769 if (testgid == (effective ? PL_egid : PL_gid))
1771 #ifdef HAS_GETGROUPS
1776 Groups_t gary[NGROUPS];
1779 anum = getgroups(NGROUPS,gary);
1781 if (gary[anum] == testgid)
1789 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1792 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1797 key = (key_t)SvNVx(*++mark);
1798 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1799 flags = SvIVx(*++mark);
1805 return msgget(key, flags);
1809 return semget(key, n, flags);
1813 return shmget(key, n, flags);
1815 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1817 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1820 return -1; /* should never happen */
1824 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1828 I32 id, n, cmd, infosize, getinfo;
1831 id = SvIVx(*++mark);
1832 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1833 cmd = SvIVx(*++mark);
1836 getinfo = (cmd == IPC_STAT);
1842 if (cmd == IPC_STAT || cmd == IPC_SET)
1843 infosize = sizeof(struct msqid_ds);
1848 if (cmd == IPC_STAT || cmd == IPC_SET)
1849 infosize = sizeof(struct shmid_ds);
1855 if (cmd == IPC_STAT || cmd == IPC_SET)
1856 infosize = sizeof(struct semid_ds);
1857 else if (cmd == GETALL || cmd == SETALL)
1859 struct semid_ds semds;
1861 #ifdef EXTRA_F_IN_SEMUN_BUF
1862 semun.buff = &semds;
1866 getinfo = (cmd == GETALL);
1867 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1869 infosize = semds.sem_nsems * sizeof(short);
1870 /* "short" is technically wrong but much more portable
1871 than guessing about u_?short(_t)? */
1874 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1878 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1880 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1889 SvPV_force(astr, len);
1890 a = SvGROW(astr, infosize+1);
1894 a = SvPV(astr, len);
1895 if (len != infosize)
1896 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1905 a = INT2PTR(char *,i); /* ouch */
1912 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1918 union semun unsemds;
1920 #ifdef EXTRA_F_IN_SEMUN_BUF
1921 unsemds.buff = (struct semid_ds *)a;
1923 unsemds.buf = (struct semid_ds *)a;
1925 ret = Semctl(id, n, cmd, unsemds);
1927 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1934 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1938 if (getinfo && ret >= 0) {
1939 SvCUR_set(astr, infosize);
1940 *SvEND(astr) = '\0';
1947 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1952 I32 id, msize, flags;
1955 id = SvIVx(*++mark);
1957 flags = SvIVx(*++mark);
1958 mbuf = SvPV(mstr, len);
1959 if ((msize = len - sizeof(long)) < 0)
1960 Perl_croak(aTHX_ "Arg too short for msgsnd");
1962 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1964 Perl_croak(aTHX_ "msgsnd not implemented");
1969 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1975 I32 id, msize, flags, ret;
1978 id = SvIVx(*++mark);
1980 /* suppress warning when reading into undef var --jhi */
1982 sv_setpvn(mstr, "", 0);
1983 msize = SvIVx(*++mark);
1984 mtype = (long)SvIVx(*++mark);
1985 flags = SvIVx(*++mark);
1986 SvPV_force(mstr, len);
1987 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1990 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1992 SvCUR_set(mstr, sizeof(long)+ret);
1993 *SvEND(mstr) = '\0';
1994 #ifndef INCOMPLETE_TAINTS
1995 /* who knows who has been playing with this message? */
2001 Perl_croak(aTHX_ "msgrcv not implemented");
2006 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2014 id = SvIVx(*++mark);
2016 opbuf = SvPV(opstr, opsize);
2017 if (opsize < sizeof(struct sembuf)
2018 || (opsize % sizeof(struct sembuf)) != 0) {
2019 SETERRNO(EINVAL,LIB$_INVARG);
2023 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
2025 Perl_croak(aTHX_ "semop not implemented");
2030 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2035 I32 id, mpos, msize;
2037 struct shmid_ds shmds;
2039 id = SvIVx(*++mark);
2041 mpos = SvIVx(*++mark);
2042 msize = SvIVx(*++mark);
2044 if (shmctl(id, IPC_STAT, &shmds) == -1)
2046 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2047 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2050 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2051 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2053 if (optype == OP_SHMREAD) {
2054 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2056 sv_setpvn(mstr, "", 0);
2057 SvPV_force(mstr, len);
2058 mbuf = SvGROW(mstr, msize+1);
2060 Copy(shm + mpos, mbuf, msize, char);
2061 SvCUR_set(mstr, msize);
2062 *SvEND(mstr) = '\0';
2064 #ifndef INCOMPLETE_TAINTS
2065 /* who knows who has been playing with this shared memory? */
2072 mbuf = SvPV(mstr, len);
2073 if ((n = len) > msize)
2075 Copy(mbuf, shm + mpos, n, char);
2077 memzero(shm + mpos + n, msize - n);
2081 Perl_croak(aTHX_ "shm I/O not implemented");
2085 #endif /* SYSV IPC */
2088 =for apidoc start_glob
2090 Function called by C<do_readline> to spawn a glob (or do the glob inside
2091 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2092 this glob starter is only used by miniperl during the build proccess.
2093 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2099 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2101 SV *tmpcmd = NEWSV(55, 0);
2105 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2106 /* since spawning off a process is a real performance hit */
2108 #include <descrip.h>
2109 #include <lib$routines.h>
2112 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2113 char vmsspec[NAM$C_MAXRSS+1];
2114 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2115 char tmpfnam[L_tmpnam] = "SYS$SCRATCH:";
2116 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2119 struct dsc$descriptor_s wilddsc
2120 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2121 struct dsc$descriptor_vs rsdsc
2122 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2123 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2125 /* We could find out if there's an explicit dev/dir or version
2126 by peeking into lib$find_file's internal context at
2127 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2128 but that's unsupported, so I don't want to do it now and
2129 have it bite someone in the future. */
2130 strcat(tmpfnam,PerlLIO_tmpnam(NULL));
2131 cp = SvPV(tmpglob,i);
2133 if (cp[i] == ';') hasver = 1;
2135 if (sts) hasver = 1;
2139 hasdir = isunix = 1;
2142 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2147 if ((tmpfp = PerlIO_open(tmpfnam,"w+","fop=dlt")) != NULL) {
2149 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2150 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2151 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2152 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2153 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2154 &dfltdsc,NULL,NULL,NULL))&1)) {
2155 end = rstr + (unsigned long int) *rslt;
2156 if (!hasver) while (*end != ';') end--;
2157 *(end++) = '\n'; *end = '\0';
2158 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2160 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2165 while (*(--begin) != ']' && *begin != '>') ;
2168 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2170 if (cxt) (void)lib$find_file_end(&cxt);
2171 if (ok && sts != RMS$_NMF &&
2172 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
2175 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2177 PerlIO_close(tmpfp);
2181 PerlIO_rewind(tmpfp);
2182 IoTYPE(io) = IoTYPE_RDONLY;
2183 IoIFP(io) = fp = tmpfp;
2184 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2189 #ifdef MACOS_TRADITIONAL
2190 sv_setpv(tmpcmd, "glob ");
2191 sv_catsv(tmpcmd, tmpglob);
2192 sv_catpv(tmpcmd, " |");
2196 sv_setpv(tmpcmd, "for a in ");
2197 sv_catsv(tmpcmd, tmpglob);
2198 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2201 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2202 sv_catsv(tmpcmd, tmpglob);
2204 sv_setpv(tmpcmd, "perlglob ");
2205 sv_catsv(tmpcmd, tmpglob);
2206 sv_catpv(tmpcmd, " |");
2211 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2212 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2213 sv_catsv(tmpcmd, tmpglob);
2214 sv_catpv(tmpcmd, "' 2>/dev/null |");
2216 sv_setpv(tmpcmd, "echo ");
2217 sv_catsv(tmpcmd, tmpglob);
2219 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2221 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2224 #endif /* !DOSISH */
2225 #endif /* MACOS_TRADITIONAL */
2226 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2227 FALSE, O_RDONLY, 0, Nullfp);