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. */
161 IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
163 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
167 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
170 /* Regular (non-sys) open */
175 PerlIO *that_fp = NULL;
177 type = savepvn(name, len);
181 /* Lose leading and trailing white space */
183 for (; isSPACE(*type); type++) ;
184 while (tend > type && isSPACE(tend[-1]))
188 /* New style explict name, type is just mode and discipline/layer info */
190 name = SvOK(*svp) ? SvPV(*svp, l) : "";
192 name = savepvn(name, len);
200 if ((*type == IoTYPE_RDWR) && /* scary */
201 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
202 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
203 TAINT_PROPER("open");
208 if (*type == IoTYPE_PIPE) {
210 if (type[1] != IoTYPE_STD) {
212 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
217 for (type++; isSPACE(*type); type++) ;
223 /* command is missing 19990114 */
224 if (ckWARN(WARN_PIPE))
225 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
229 if (strNE(name,"-") || num_svs)
231 TAINT_PROPER("piped open");
232 if (!num_svs && name[len-1] == '|') {
234 if (ckWARN(WARN_PIPE))
235 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
244 fp = PerlProc_popen_list(mode, num_svs, svp);
247 fp = PerlProc_popen(name,mode);
250 else if (*type == IoTYPE_WRONLY) {
251 TAINT_PROPER("open");
253 if (*type == IoTYPE_WRONLY) {
254 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
255 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
270 dodup = PERLIO_DUP_FD;
276 if (!num_svs && !*type && supplied_fp) {
277 /* "<+&" etc. is used by typemaps */
282 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
284 if (num_svs && SvIOK(*svp)) {
287 else if (isDIGIT(*type)) {
289 for (; isSPACE(*type); type++) ;
295 thatio = sv_2io(*svp);
300 for (; isSPACE(*type); type++) ;
301 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
302 thatio = GvIO(thatgv);
306 SETERRNO(EINVAL,SS$_IVCHAN);
310 if ((that_fp = IoIFP(thatio))) {
311 /* Flush stdio buffer before dup. --mjd
312 * Unfortunately SEEK_CURing 0 seems to
313 * be optimized away on most platforms;
314 * only Solaris and Linux seem to flush
317 /* sfio fails to clear error on next
318 sfwrite, contrary to documentation.
320 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
321 PerlIO_clearerr(that_fp);
323 /* On the other hand, do all platforms
324 * take gracefully to flushing a read-only
325 * filehandle? Perhaps we should do
326 * fsetpos(src)+fgetpos(dst)? --nik */
327 PerlIO_flush(that_fp);
328 fd = PerlIO_fileno(that_fp);
329 /* When dup()ing STDIN, STDOUT or STDERR
330 * explicitly set appropriate access mode */
331 if (that_fp == PerlIO_stdout()
332 || that_fp == PerlIO_stderr())
333 IoTYPE(io) = IoTYPE_WRONLY;
334 else if (that_fp == PerlIO_stdin())
335 IoTYPE(io) = IoTYPE_RDONLY;
336 /* When dup()ing a socket, say result is
338 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
339 IoTYPE(io) = IoTYPE_SOCKET;
347 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
351 fd = PerlLIO_dup(fd);
354 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
363 for (; isSPACE(*type); type++) ;
364 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
367 fp = PerlIO_stdout();
368 IoTYPE(io) = IoTYPE_STD;
370 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
375 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
380 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
384 else if (*type == IoTYPE_RDONLY) {
386 for (type++; isSPACE(*type); type++) ;
396 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
400 IoTYPE(io) = IoTYPE_STD;
402 Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
407 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
412 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
415 else if ((num_svs && type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
416 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
418 type += 2; /* skip over '-|' */
422 while (tend > type && isSPACE(tend[-1]))
425 for (; isSPACE(*type); type++) ;
430 /* command is missing 19990114 */
431 if (ckWARN(WARN_PIPE))
432 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
436 if (strNE(name,"-") || num_svs)
438 TAINT_PROPER("piped open");
445 fp = PerlProc_popen_list(mode,num_svs,svp);
448 fp = PerlProc_popen(name,mode);
450 IoTYPE(io) = IoTYPE_PIPE;
456 IoTYPE(io) = IoTYPE_RDONLY;
458 for (; isSPACE(*name); name++) ;
464 if (strEQ(name,"-")) {
466 IoTYPE(io) = IoTYPE_STD;
470 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
475 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
480 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
481 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
485 if (ckWARN(WARN_IO)) {
486 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
487 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
488 Perl_warner(aTHX_ WARN_IO,
489 "Filehandle STD%s opened only for input",
490 (fp == PerlIO_stdout()) ? "OUT" : "ERR");
492 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
493 Perl_warner(aTHX_ WARN_IO,
494 "Filehandle STDIN opened only for output");
498 fd = PerlIO_fileno(fp);
499 /* If there is no fd (e.g. PerlIO::Scalar) assume it isn't a
500 * socket - this covers PerlIO::Scalar - otherwise unless we "know" the
501 * type probe for socket-ness.
503 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
504 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
505 /* If PerlIO claims to have fd we had better be able to fstat() it. */
506 (void) PerlIO_close(fp);
510 if (S_ISSOCK(PL_statbuf.st_mode))
511 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
515 !(PL_statbuf.st_mode & S_IFMT)
519 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
520 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
521 ) { /* on OS's that return 0 on fstat()ed pipe */
523 Sock_size_t buflen = sizeof tmpbuf;
524 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
525 || errno != ENOTSOCK)
526 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
527 /* but some return 0 for streams too, sigh */
529 #endif /* HAS_SOCKET */
530 #endif /* !PERL_MICRO */
534 * If this is a standard handle we discard all the layer stuff
535 * and just dup the fd into whatever was on the handle before !
538 if (saveifp) { /* must use old fp? */
539 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
540 then dup the new fileno down
543 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
544 if (saveofp != saveifp) { /* was a socket? */
545 PerlIO_close(saveofp);
551 /* Still a small can-of-worms here if (say) PerlIO::Scalar
552 is assigned to (say) STDOUT - for now let dup2() fail
553 and provide the error
555 if (PerlLIO_dup2(fd, savefd) < 0) {
556 (void)PerlIO_close(fp);
560 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
561 char newname[FILENAME_MAX+1];
562 if (PerlIO_getname(fp, newname)) {
563 if (fd == PerlIO_fileno(PerlIO_stdout())) Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
564 if (fd == PerlIO_fileno(PerlIO_stderr())) Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
569 sv = *av_fetch(PL_fdpid,fd,TRUE);
570 (void)SvUPGRADE(sv, SVt_IV);
573 sv = *av_fetch(PL_fdpid,savefd,TRUE);
575 (void)SvUPGRADE(sv, SVt_IV);
583 fd = PerlIO_fileno(fp);
585 #if defined(HAS_FCNTL) && defined(F_SETFD)
587 int save_errno = errno;
588 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
594 IoFLAGS(io) &= ~IOf_NOLINE;
596 if (IoTYPE(io) == IoTYPE_SOCKET
597 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
599 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
613 IoTYPE(io) = savetype;
618 Perl_nextargv(pTHX_ register GV *gv)
621 #ifndef FLEXFILENAMES
630 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
631 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
632 IoFLAGS(io) &= ~IOf_START;
634 if (!PL_argvout_stack)
635 PL_argvout_stack = newAV();
636 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
639 if (PL_filemode & (S_ISUID|S_ISGID)) {
640 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
642 (void)fchmod(PL_lastfd,PL_filemode);
644 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
648 while (av_len(GvAV(gv)) >= 0) {
650 sv = av_shift(GvAV(gv));
652 sv_setsv(GvSV(gv),sv);
653 SvSETMAGIC(GvSV(gv));
654 PL_oldname = SvPVx(GvSV(gv), oldlen);
655 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
657 TAINT_PROPER("inplace open");
658 if (oldlen == 1 && *PL_oldname == '-') {
659 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
660 return IoIFP(GvIOp(gv));
662 #ifndef FLEXFILENAMES
663 filedev = PL_statbuf.st_dev;
664 fileino = PL_statbuf.st_ino;
666 PL_filemode = PL_statbuf.st_mode;
667 fileuid = PL_statbuf.st_uid;
668 filegid = PL_statbuf.st_gid;
669 if (!S_ISREG(PL_filemode)) {
670 if (ckWARN_d(WARN_INPLACE))
671 Perl_warner(aTHX_ WARN_INPLACE,
672 "Can't do inplace edit: %s is not a regular file",
678 char *star = strchr(PL_inplace, '*');
680 char *begin = PL_inplace;
681 sv_setpvn(sv, "", 0);
683 sv_catpvn(sv, begin, star - begin);
684 sv_catpvn(sv, PL_oldname, oldlen);
686 } while ((star = strchr(begin, '*')));
691 sv_catpv(sv,PL_inplace);
693 #ifndef FLEXFILENAMES
694 if ((PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
695 && PL_statbuf.st_dev == filedev
696 && PL_statbuf.st_ino == fileino)
698 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
702 if (ckWARN_d(WARN_INPLACE))
703 Perl_warner(aTHX_ WARN_INPLACE,
704 "Can't do inplace edit: %s would not be unique",
711 #if !defined(DOSISH) && !defined(__CYGWIN__)
712 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
713 if (ckWARN_d(WARN_INPLACE))
714 Perl_warner(aTHX_ WARN_INPLACE,
715 "Can't rename %s to %s: %s, skipping file",
716 PL_oldname, SvPVX(sv), Strerror(errno) );
722 (void)PerlLIO_unlink(SvPVX(sv));
723 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
724 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
727 (void)UNLINK(SvPVX(sv));
728 if (link(PL_oldname,SvPVX(sv)) < 0) {
729 if (ckWARN_d(WARN_INPLACE))
730 Perl_warner(aTHX_ WARN_INPLACE,
731 "Can't rename %s to %s: %s, skipping file",
732 PL_oldname, SvPVX(sv), Strerror(errno) );
736 (void)UNLINK(PL_oldname);
740 #if !defined(DOSISH) && !defined(AMIGAOS)
741 # ifndef VMS /* Don't delete; use automatic file versioning */
742 if (UNLINK(PL_oldname) < 0) {
743 if (ckWARN_d(WARN_INPLACE))
744 Perl_warner(aTHX_ WARN_INPLACE,
745 "Can't remove %s: %s, skipping file",
746 PL_oldname, Strerror(errno) );
752 Perl_croak(aTHX_ "Can't do inplace edit without backup");
756 sv_setpvn(sv,">",!PL_inplace);
757 sv_catpvn(sv,PL_oldname,oldlen);
758 SETERRNO(0,0); /* in case sprintf set errno */
760 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
761 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
763 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
764 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
767 if (ckWARN_d(WARN_INPLACE))
768 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
769 PL_oldname, Strerror(errno) );
773 setdefout(PL_argvoutgv);
774 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
775 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
777 (void)fchmod(PL_lastfd,PL_filemode);
779 # if !(defined(WIN32) && defined(__BORLANDC__))
780 /* Borland runtime creates a readonly file! */
781 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
784 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
786 (void)fchown(PL_lastfd,fileuid,filegid);
789 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
794 return IoIFP(GvIOp(gv));
797 if (ckWARN_d(WARN_INPLACE)) {
799 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
800 && !S_ISREG(PL_statbuf.st_mode))
802 Perl_warner(aTHX_ WARN_INPLACE,
803 "Can't do inplace edit: %s is not a regular file",
807 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
808 PL_oldname, Strerror(eno));
812 if (io && (IoFLAGS(io) & IOf_ARGV))
813 IoFLAGS(io) |= IOf_START;
815 (void)do_close(PL_argvoutgv,FALSE);
816 if (io && (IoFLAGS(io) & IOf_ARGV)
817 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
819 GV *oldout = (GV*)av_pop(PL_argvout_stack);
821 SvREFCNT_dec(oldout);
824 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
831 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
850 if (PerlProc_pipe(fd) < 0)
852 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
853 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
854 IoIFP(wstio) = IoOFP(wstio);
855 IoTYPE(rstio) = IoTYPE_RDONLY;
856 IoTYPE(wstio) = IoTYPE_WRONLY;
857 if (!IoIFP(rstio) || !IoOFP(wstio)) {
858 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
859 else PerlLIO_close(fd[0]);
860 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
861 else PerlLIO_close(fd[1]);
865 sv_setsv(sv,&PL_sv_yes);
869 sv_setsv(sv,&PL_sv_undef);
874 /* explicit renamed to avoid C++ conflict -- kja */
876 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
883 if (!gv || SvTYPE(gv) != SVt_PVGV) {
885 SETERRNO(EBADF,SS$_IVCHAN);
889 if (!io) { /* never opened */
891 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
892 report_evil_fh(gv, io, PL_op->op_type);
893 SETERRNO(EBADF,SS$_IVCHAN);
897 retval = io_close(io, not_implicit);
901 IoLINES_LEFT(io) = IoPAGE_LEN(io);
903 IoTYPE(io) = IoTYPE_CLOSED;
908 Perl_io_close(pTHX_ IO *io, bool not_implicit)
914 if (IoTYPE(io) == IoTYPE_PIPE) {
915 status = PerlProc_pclose(IoIFP(io));
917 STATUS_NATIVE_SET(status);
918 retval = (STATUS_POSIX == 0);
921 retval = (status != -1);
924 else if (IoTYPE(io) == IoTYPE_STD)
927 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
928 retval = (PerlIO_close(IoOFP(io)) != EOF);
929 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
932 retval = (PerlIO_close(IoIFP(io)) != EOF);
934 IoOFP(io) = IoIFP(io) = Nullfp;
936 else if (not_implicit) {
937 SETERRNO(EBADF,SS$_IVCHAN);
944 Perl_do_eof(pTHX_ GV *gv)
953 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
955 /* integrate to report_evil_fh()? */
958 SV* sv = sv_newmortal();
959 gv_efullname4(sv, gv, Nullch, FALSE);
960 name = SvPV_nolen(sv);
963 Perl_warner(aTHX_ WARN_IO,
964 "Filehandle %s opened only for output", name);
966 Perl_warner(aTHX_ WARN_IO,
967 "Filehandle opened only for output");
972 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
973 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
974 return FALSE; /* this is the most usual case */
977 ch = PerlIO_getc(IoIFP(io));
979 (void)PerlIO_ungetc(IoIFP(io),ch);
983 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
984 if (PerlIO_get_cnt(IoIFP(io)) < -1)
985 PerlIO_set_cnt(IoIFP(io),-1);
987 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
988 if (!nextargv(PL_argvgv)) /* get another fp handy */
992 return TRUE; /* normal fp, definitely end of file */
998 Perl_do_tell(pTHX_ GV *gv)
1000 register IO *io = 0;
1001 register PerlIO *fp;
1003 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1004 #ifdef ULTRIX_STDIO_BOTCH
1006 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1008 return PerlIO_tell(fp);
1010 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1011 report_evil_fh(gv, io, PL_op->op_type);
1012 SETERRNO(EBADF,RMS$_IFI);
1017 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1019 register IO *io = 0;
1020 register PerlIO *fp;
1022 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1023 #ifdef ULTRIX_STDIO_BOTCH
1025 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1027 return PerlIO_seek(fp, pos, whence) >= 0;
1029 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1030 report_evil_fh(gv, io, PL_op->op_type);
1031 SETERRNO(EBADF,RMS$_IFI);
1036 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1038 register IO *io = 0;
1039 register PerlIO *fp;
1041 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1042 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1043 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1044 report_evil_fh(gv, io, PL_op->op_type);
1045 SETERRNO(EBADF,RMS$_IFI);
1050 Perl_mode_from_discipline(pTHX_ SV *discp)
1052 int mode = O_BINARY;
1055 char *s = SvPV(discp,len);
1060 if (len > 3 && strnEQ(s+1, "raw", 3)
1061 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1070 if (len > 4 && strnEQ(s+1, "crlf", 4)
1071 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1080 goto fail_discipline;
1083 else if (isSPACE(*s)) {
1090 end = strchr(s+1, ':');
1093 #ifndef PERLIO_LAYERS
1094 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1105 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1107 /* The old body of this is now in non-LAYER part of perlio.c
1108 * This is a stub for any XS code which might have been calling it.
1110 char *name = ":raw";
1111 #ifdef PERLIO_USING_CRLF
1112 if (!(mode & O_BINARY))
1115 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1118 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1119 /* code courtesy of William Kucharski */
1122 I32 my_chsize(fd, length)
1123 I32 fd; /* file descriptor */
1124 Off_t length; /* length to set file to */
1127 struct stat filebuf;
1129 if (PerlLIO_fstat(fd, &filebuf) < 0)
1132 if (filebuf.st_size < length) {
1134 /* extend file length */
1136 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1139 /* write a "0" byte */
1141 if ((PerlLIO_write(fd, "", 1)) != 1)
1145 /* truncate length */
1149 fl.l_start = length;
1150 fl.l_type = F_WRLCK; /* write lock on file space */
1153 * This relies on the UNDOCUMENTED F_FREESP argument to
1154 * fcntl(2), which truncates the file so that it ends at the
1155 * position indicated by fl.l_start.
1157 * Will minor miracles never cease?
1160 if (fcntl(fd, F_FREESP, &fl) < 0)
1167 #endif /* F_FREESP */
1170 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1172 register char *tmps;
1175 /* assuming fp is checked earlier */
1181 if (SvIOK(sv) && SvIVX(sv) != 0) {
1182 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1183 return !PerlIO_error(fp);
1185 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1186 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1187 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1188 return !PerlIO_error(fp);
1191 switch (SvTYPE(sv)) {
1193 if (ckWARN(WARN_UNINITIALIZED))
1201 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1203 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1204 return !PerlIO_error(fp);
1208 if (PerlIO_isutf8(fp)) {
1210 sv_utf8_upgrade(sv = sv_mortalcopy(sv));
1212 else if (DO_UTF8(sv)) {
1213 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
1214 && ckWARN(WARN_UTF8))
1216 Perl_warner(aTHX_ WARN_UTF8, "Wide character in print");
1219 tmps = SvPV(sv, len);
1222 /* To detect whether the process is about to overstep its
1223 * filesize limit we would need getrlimit(). We could then
1224 * also transparently raise the limit with setrlimit() --
1225 * but only until the system hard limit/the filesystem limit,
1226 * at which we would get EPERM. Note that when using buffered
1227 * io the write failure can be delayed until the flush/close. --jhi */
1228 if (len && (PerlIO_write(fp,tmps,len) == 0))
1230 return !PerlIO_error(fp);
1240 if (PL_op->op_flags & OPf_REF) {
1245 if (io && IoIFP(io)) {
1247 sv_setpv(PL_statname,"");
1248 PL_laststype = OP_STAT;
1249 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1253 return PL_laststatval;
1254 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1255 report_evil_fh(gv, io, PL_op->op_type);
1257 sv_setpv(PL_statname,"");
1258 return (PL_laststatval = -1);
1266 if (SvTYPE(sv) == SVt_PVGV) {
1270 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1277 sv_setpv(PL_statname, s);
1278 PL_laststype = OP_STAT;
1279 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1280 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1281 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1282 return PL_laststatval;
1292 if (PL_op->op_flags & OPf_REF) {
1294 if (cGVOP_gv == PL_defgv) {
1295 if (PL_laststype != OP_LSTAT)
1296 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1297 return PL_laststatval;
1299 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1302 PL_laststype = OP_LSTAT;
1306 sv_setpv(PL_statname,SvPV(sv, n_a));
1307 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1308 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1309 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1310 return PL_laststatval;
1314 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1316 return do_aexec5(really, mark, sp, 0, 0);
1320 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1321 int fd, int do_report)
1323 #ifdef MACOS_TRADITIONAL
1324 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1327 char *tmps = Nullch;
1331 New(401,PL_Argv, sp - mark + 1, char*);
1333 while (++mark <= sp) {
1335 *a++ = SvPVx(*mark, n_a);
1341 tmps = SvPV(really, n_a);
1342 if ((!really && *PL_Argv[0] != '/') ||
1343 (really && *tmps != '/')) /* will execvp use PATH? */
1344 TAINT_ENV(); /* testing IFS here is overkill, probably */
1345 if (really && *tmps)
1346 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1348 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1349 if (ckWARN(WARN_EXEC))
1350 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1351 (really ? tmps : PL_Argv[0]), Strerror(errno));
1355 PerlLIO_write(fd, (void*)&e, sizeof(int));
1365 Perl_do_execfree(pTHX)
1369 PL_Argv = Null(char **);
1377 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1380 Perl_do_exec(pTHX_ char *cmd)
1382 return do_exec3(cmd,0,0);
1386 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1391 while (*cmd && isSPACE(*cmd))
1394 /* save an extra exec if possible */
1399 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1400 strnEQ(cmd+PL_cshlen," -c",3)) {
1402 s = cmd+PL_cshlen+3;
1416 if (s[-1] == '\'') {
1418 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1427 /* see if there are shell metacharacters in it */
1429 if (*cmd == '.' && isSPACE(cmd[1]))
1432 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1435 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1439 for (s = cmd; *s; s++) {
1440 if (*s != ' ' && !isALPHA(*s) &&
1441 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1442 if (*s == '\n' && !s[1]) {
1446 /* handle the 2>&1 construct at the end */
1447 if (*s == '>' && s[1] == '&' && s[2] == '1'
1448 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1449 && (!s[3] || isSPACE(s[3])))
1453 while (*t && isSPACE(*t))
1455 if (!*t && (dup2(1,2) != -1)) {
1461 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1466 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1467 PL_Cmd = savepvn(cmd, s-cmd);
1469 for (s = PL_Cmd; *s;) {
1470 while (*s && isSPACE(*s)) s++;
1473 while (*s && !isSPACE(*s)) s++;
1479 PerlProc_execvp(PL_Argv[0],PL_Argv);
1480 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1487 if (ckWARN(WARN_EXEC))
1488 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1489 PL_Argv[0], Strerror(errno));
1491 PerlLIO_write(fd, (void*)&e, sizeof(int));
1500 #endif /* OS2 || WIN32 */
1503 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1507 register I32 tot = 0;
1510 SV **oldmark = mark;
1513 #define APPLY_TAINT_PROPER() \
1515 if (PL_tainted) { TAINT_PROPER(what); } \
1518 /* This is a first heuristic; it doesn't catch tainting magic. */
1520 while (++mark <= sp) {
1521 if (SvTAINTED(*mark)) {
1531 APPLY_TAINT_PROPER();
1534 APPLY_TAINT_PROPER();
1536 while (++mark <= sp) {
1537 char *name = SvPVx(*mark, n_a);
1538 APPLY_TAINT_PROPER();
1539 if (PerlLIO_chmod(name, val))
1547 APPLY_TAINT_PROPER();
1548 if (sp - mark > 2) {
1549 val = SvIVx(*++mark);
1550 val2 = SvIVx(*++mark);
1551 APPLY_TAINT_PROPER();
1553 while (++mark <= sp) {
1554 char *name = SvPVx(*mark, n_a);
1555 APPLY_TAINT_PROPER();
1556 if (PerlLIO_chown(name, val, val2))
1563 XXX Should we make lchown() directly available from perl?
1564 For now, we'll let Configure test for HAS_LCHOWN, but do
1565 nothing in the core.
1571 APPLY_TAINT_PROPER();
1574 s = SvPVx(*++mark, n_a);
1576 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1578 if (!(val = whichsig(s)))
1579 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1583 APPLY_TAINT_PROPER();
1586 /* kill() doesn't do process groups (job trees?) under VMS */
1587 if (val < 0) val = -val;
1588 if (val == SIGKILL) {
1589 # include <starlet.h>
1590 /* Use native sys$delprc() to insure that target process is
1591 * deleted; supervisor-mode images don't pay attention to
1592 * CRTL's emulation of Unix-style signals and kill()
1594 while (++mark <= sp) {
1595 I32 proc = SvIVx(*mark);
1596 register unsigned long int __vmssts;
1597 APPLY_TAINT_PROPER();
1598 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1602 case SS$_NOSUCHNODE:
1603 SETERRNO(ESRCH,__vmssts);
1606 SETERRNO(EPERM,__vmssts);
1609 SETERRNO(EVMSERR,__vmssts);
1618 while (++mark <= sp) {
1619 I32 proc = SvIVx(*mark);
1620 APPLY_TAINT_PROPER();
1622 if (PerlProc_killpg(proc,val)) /* BSD */
1624 if (PerlProc_kill(-proc,val)) /* SYSV */
1630 while (++mark <= sp) {
1631 I32 proc = SvIVx(*mark);
1632 APPLY_TAINT_PROPER();
1633 if (PerlProc_kill(proc, val))
1641 APPLY_TAINT_PROPER();
1643 while (++mark <= sp) {
1644 s = SvPVx(*mark, n_a);
1645 APPLY_TAINT_PROPER();
1646 if (PL_euid || PL_unsafe) {
1650 else { /* don't let root wipe out directories without -U */
1651 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1663 APPLY_TAINT_PROPER();
1664 if (sp - mark > 2) {
1665 #if defined(I_UTIME) || defined(VMS)
1666 struct utimbuf utbuf;
1674 SV* accessed = *++mark;
1675 SV* modified = *++mark;
1676 void * utbufp = &utbuf;
1678 /* be like C, and if both times are undefined, let the C
1679 library figure out what to do. This usually means
1682 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1685 Zero(&utbuf, sizeof utbuf, char);
1687 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1688 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1690 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1691 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1693 APPLY_TAINT_PROPER();
1695 while (++mark <= sp) {
1696 char *name = SvPVx(*mark, n_a);
1697 APPLY_TAINT_PROPER();
1698 if (PerlLIO_utime(name, utbufp))
1709 #undef APPLY_TAINT_PROPER
1712 /* Do the permissions allow some operation? Assumes statcache already set. */
1713 #ifndef VMS /* VMS' cando is in vms.c */
1715 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1716 /* Note: we use `effective' both for uids and gids.
1717 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1720 /* [Comments and code from Len Reed]
1721 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1722 * to write-protected files. The execute permission bit is set
1723 * by the Miscrosoft C library stat() function for the following:
1728 * All files and directories are readable.
1729 * Directories and special files, e.g. "CON", cannot be
1731 * [Comment by Tom Dinger -- a directory can have the write-protect
1732 * bit set in the file system, but DOS permits changes to
1733 * the directory anyway. In addition, all bets are off
1734 * here for networked software, such as Novell and
1738 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1739 * too so it will actually look into the files for magic numbers
1741 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1743 #else /* ! DOSISH */
1744 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1745 if (mode == S_IXUSR) {
1746 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1750 return TRUE; /* root reads and writes anything */
1753 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1754 if (statbufp->st_mode & mode)
1755 return TRUE; /* ok as "user" */
1757 else if (ingroup(statbufp->st_gid,effective)) {
1758 if (statbufp->st_mode & mode >> 3)
1759 return TRUE; /* ok as "group" */
1761 else if (statbufp->st_mode & mode >> 6)
1762 return TRUE; /* ok as "other" */
1764 #endif /* ! DOSISH */
1769 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1771 #ifdef MACOS_TRADITIONAL
1772 /* This is simply not correct for AppleShare, but fix it yerself. */
1775 if (testgid == (effective ? PL_egid : PL_gid))
1777 #ifdef HAS_GETGROUPS
1782 Groups_t gary[NGROUPS];
1785 anum = getgroups(NGROUPS,gary);
1787 if (gary[anum] == testgid)
1795 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1798 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1803 key = (key_t)SvNVx(*++mark);
1804 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1805 flags = SvIVx(*++mark);
1811 return msgget(key, flags);
1815 return semget(key, n, flags);
1819 return shmget(key, n, flags);
1821 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1823 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1826 return -1; /* should never happen */
1830 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1834 I32 id, n, cmd, infosize, getinfo;
1837 id = SvIVx(*++mark);
1838 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1839 cmd = SvIVx(*++mark);
1842 getinfo = (cmd == IPC_STAT);
1848 if (cmd == IPC_STAT || cmd == IPC_SET)
1849 infosize = sizeof(struct msqid_ds);
1854 if (cmd == IPC_STAT || cmd == IPC_SET)
1855 infosize = sizeof(struct shmid_ds);
1861 if (cmd == IPC_STAT || cmd == IPC_SET)
1862 infosize = sizeof(struct semid_ds);
1863 else if (cmd == GETALL || cmd == SETALL)
1865 struct semid_ds semds;
1867 #ifdef EXTRA_F_IN_SEMUN_BUF
1868 semun.buff = &semds;
1872 getinfo = (cmd == GETALL);
1873 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1875 infosize = semds.sem_nsems * sizeof(short);
1876 /* "short" is technically wrong but much more portable
1877 than guessing about u_?short(_t)? */
1880 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1884 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1886 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1895 SvPV_force(astr, len);
1896 a = SvGROW(astr, infosize+1);
1900 a = SvPV(astr, len);
1901 if (len != infosize)
1902 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1911 a = INT2PTR(char *,i); /* ouch */
1918 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1924 union semun unsemds;
1926 #ifdef EXTRA_F_IN_SEMUN_BUF
1927 unsemds.buff = (struct semid_ds *)a;
1929 unsemds.buf = (struct semid_ds *)a;
1931 ret = Semctl(id, n, cmd, unsemds);
1933 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1940 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1944 if (getinfo && ret >= 0) {
1945 SvCUR_set(astr, infosize);
1946 *SvEND(astr) = '\0';
1953 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1958 I32 id, msize, flags;
1961 id = SvIVx(*++mark);
1963 flags = SvIVx(*++mark);
1964 mbuf = SvPV(mstr, len);
1965 if ((msize = len - sizeof(long)) < 0)
1966 Perl_croak(aTHX_ "Arg too short for msgsnd");
1968 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1970 Perl_croak(aTHX_ "msgsnd not implemented");
1975 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1981 I32 id, msize, flags, ret;
1984 id = SvIVx(*++mark);
1986 /* suppress warning when reading into undef var --jhi */
1988 sv_setpvn(mstr, "", 0);
1989 msize = SvIVx(*++mark);
1990 mtype = (long)SvIVx(*++mark);
1991 flags = SvIVx(*++mark);
1992 SvPV_force(mstr, len);
1993 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1996 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1998 SvCUR_set(mstr, sizeof(long)+ret);
1999 *SvEND(mstr) = '\0';
2000 #ifndef INCOMPLETE_TAINTS
2001 /* who knows who has been playing with this message? */
2007 Perl_croak(aTHX_ "msgrcv not implemented");
2012 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2020 id = SvIVx(*++mark);
2022 opbuf = SvPV(opstr, opsize);
2023 if (opsize < 3 * SHORTSIZE
2024 || (opsize % (3 * SHORTSIZE))) {
2025 SETERRNO(EINVAL,LIB$_INVARG);
2029 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2031 int nsops = opsize / (3 * sizeof (short));
2033 short *ops = (short *) opbuf;
2035 struct sembuf *temps, *t;
2038 New (0, temps, nsops, struct sembuf);
2046 result = semop(id, temps, nsops);
2060 Perl_croak(aTHX_ "semop not implemented");
2065 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2070 I32 id, mpos, msize;
2072 struct shmid_ds shmds;
2074 id = SvIVx(*++mark);
2076 mpos = SvIVx(*++mark);
2077 msize = SvIVx(*++mark);
2079 if (shmctl(id, IPC_STAT, &shmds) == -1)
2081 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2082 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2085 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2086 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2088 if (optype == OP_SHMREAD) {
2089 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2091 sv_setpvn(mstr, "", 0);
2092 SvPV_force(mstr, len);
2093 mbuf = SvGROW(mstr, msize+1);
2095 Copy(shm + mpos, mbuf, msize, char);
2096 SvCUR_set(mstr, msize);
2097 *SvEND(mstr) = '\0';
2099 #ifndef INCOMPLETE_TAINTS
2100 /* who knows who has been playing with this shared memory? */
2107 mbuf = SvPV(mstr, len);
2108 if ((n = len) > msize)
2110 Copy(mbuf, shm + mpos, n, char);
2112 memzero(shm + mpos + n, msize - n);
2116 Perl_croak(aTHX_ "shm I/O not implemented");
2120 #endif /* SYSV IPC */
2123 =for apidoc start_glob
2125 Function called by C<do_readline> to spawn a glob (or do the glob inside
2126 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2127 this glob starter is only used by miniperl during the build process.
2128 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2134 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2136 SV *tmpcmd = NEWSV(55, 0);
2140 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2141 /* since spawning off a process is a real performance hit */
2143 #include <descrip.h>
2144 #include <lib$routines.h>
2147 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2148 char vmsspec[NAM$C_MAXRSS+1];
2149 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2150 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2153 struct dsc$descriptor_s wilddsc
2154 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2155 struct dsc$descriptor_vs rsdsc
2156 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2157 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2159 /* We could find out if there's an explicit dev/dir or version
2160 by peeking into lib$find_file's internal context at
2161 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2162 but that's unsupported, so I don't want to do it now and
2163 have it bite someone in the future. */
2164 cp = SvPV(tmpglob,i);
2166 if (cp[i] == ';') hasver = 1;
2168 if (sts) hasver = 1;
2172 hasdir = isunix = 1;
2175 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2180 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2182 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2183 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2184 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2185 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2186 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2187 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
2188 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2189 &dfltdsc,NULL,NULL,NULL))&1)) {
2190 end = rstr + (unsigned long int) *rslt;
2191 if (!hasver) while (*end != ';') end--;
2192 *(end++) = '\n'; *end = '\0';
2193 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2195 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2200 while (*(--begin) != ']' && *begin != '>') ;
2203 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2205 if (cxt) (void)lib$find_file_end(&cxt);
2206 if (ok && sts != RMS$_NMF &&
2207 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
2210 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2212 PerlIO_close(tmpfp);
2216 PerlIO_rewind(tmpfp);
2217 IoTYPE(io) = IoTYPE_RDONLY;
2218 IoIFP(io) = fp = tmpfp;
2219 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2224 #ifdef MACOS_TRADITIONAL
2225 sv_setpv(tmpcmd, "glob ");
2226 sv_catsv(tmpcmd, tmpglob);
2227 sv_catpv(tmpcmd, " |");
2231 sv_setpv(tmpcmd, "for a in ");
2232 sv_catsv(tmpcmd, tmpglob);
2233 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2236 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2237 sv_catsv(tmpcmd, tmpglob);
2239 sv_setpv(tmpcmd, "perlglob ");
2240 sv_catsv(tmpcmd, tmpglob);
2241 sv_catpv(tmpcmd, " |");
2246 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2247 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2248 sv_catsv(tmpcmd, tmpglob);
2249 sv_catpv(tmpcmd, "' 2>/dev/null |");
2251 sv_setpv(tmpcmd, "echo ");
2252 sv_catsv(tmpcmd, tmpglob);
2254 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2256 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2259 #endif /* !DOSISH */
2260 #endif /* MACOS_TRADITIONAL */
2261 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2262 FALSE, O_RDONLY, 0, Nullfp);