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) && /* scary */
236 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
241 if (*type == IoTYPE_PIPE) {
243 if (type[1] != IoTYPE_STD) {
245 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
250 for (type++; isSPACE(*type); type++) ;
256 /* command is missing 19990114 */
257 if (ckWARN(WARN_PIPE))
258 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
262 if (strNE(name,"-") || num_svs)
264 TAINT_PROPER("piped open");
265 if (!num_svs && name[len-1] == '|') {
267 if (ckWARN(WARN_PIPE))
268 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
277 fp = PerlProc_popen_list(mode, num_svs, svp);
280 fp = PerlProc_popen(name,mode);
283 else if (*type == IoTYPE_WRONLY) {
284 TAINT_PROPER("open");
286 if (*type == IoTYPE_WRONLY) {
287 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
288 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
309 if (!num_svs && !*type && supplied_fp) {
310 /* "<+&" etc. is used by typemaps */
315 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
317 if (num_svs && SvIOK(*svp)) {
320 else if (isDIGIT(*type)) {
322 for (; isSPACE(*type); type++) ;
328 thatio = sv_2io(*svp);
333 for (; isSPACE(*type); type++) ;
334 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
335 thatio = GvIO(thatgv);
339 SETERRNO(EINVAL,SS$_IVCHAN);
344 PerlIO *fp = IoIFP(thatio);
345 /* Flush stdio buffer before dup. --mjd
346 * Unfortunately SEEK_CURing 0 seems to
347 * be optimized away on most platforms;
348 * only Solaris and Linux seem to flush
351 /* sfio fails to clear error on next
352 sfwrite, contrary to documentation.
354 if (PerlIO_seek(fp, 0, SEEK_CUR) == -1)
357 /* On the other hand, do all platforms
358 * take gracefully to flushing a read-only
359 * filehandle? Perhaps we should do
360 * fsetpos(src)+fgetpos(dst)? --nik */
362 fd = PerlIO_fileno(fp);
363 /* When dup()ing STDIN, STDOUT or STDERR
364 * explicitly set appropriate access mode */
365 if (IoIFP(thatio) == PerlIO_stdout()
366 || IoIFP(thatio) == PerlIO_stderr())
367 IoTYPE(io) = IoTYPE_WRONLY;
368 else if (IoIFP(thatio) == PerlIO_stdin())
369 IoTYPE(io) = IoTYPE_RDONLY;
370 /* When dup()ing a socket, say result is
372 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
373 IoTYPE(io) = IoTYPE_SOCKET;
379 fd = PerlLIO_dup(fd);
384 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
392 Perl_croak(aTHX_ "More than one argument to '>' open");
395 for (; isSPACE(*type); type++) ;
396 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
399 fp = PerlIO_stdout();
400 IoTYPE(io) = IoTYPE_STD;
404 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
409 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
413 else if (*type == IoTYPE_RDONLY) {
415 Perl_croak(aTHX_ "More than one argument to '<' open");
418 for (type++; isSPACE(*type); type++) ;
428 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
432 IoTYPE(io) = IoTYPE_STD;
436 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
441 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
444 else if ((num_svs && type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
445 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
447 type += 2; /* skip over '-|' */
451 while (tend > type && isSPACE(tend[-1]))
454 for (; isSPACE(*type); type++) ;
459 /* command is missing 19990114 */
460 if (ckWARN(WARN_PIPE))
461 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
465 if (strNE(name,"-") || num_svs)
467 TAINT_PROPER("piped open");
474 fp = PerlProc_popen_list(mode,num_svs,svp);
477 fp = PerlProc_popen(name,mode);
479 IoTYPE(io) = IoTYPE_PIPE;
485 IoTYPE(io) = IoTYPE_RDONLY;
487 for (; isSPACE(*name); name++) ;
493 if (strEQ(name,"-")) {
495 IoTYPE(io) = IoTYPE_STD;
499 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
504 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
509 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
510 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
514 if (ckWARN(WARN_IO)) {
515 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
516 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
517 Perl_warner(aTHX_ WARN_IO,
518 "Filehandle STD%s opened only for input",
519 (fp == PerlIO_stdout()) ? "OUT" : "ERR");
521 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
522 Perl_warner(aTHX_ WARN_IO,
523 "Filehandle STDIN opened only for output");
527 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD &&
528 /* FIXME: This next term is a hack to avoid fileno on PerlIO::Scalar */
529 !(num_svs && SvROK(*svp))) {
530 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
531 (void)PerlIO_close(fp);
534 if (S_ISSOCK(PL_statbuf.st_mode))
535 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
539 !(PL_statbuf.st_mode & S_IFMT)
543 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
544 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
545 ) { /* on OS's that return 0 on fstat()ed pipe */
547 Sock_size_t buflen = sizeof tmpbuf;
548 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
550 || errno != ENOTSOCK)
551 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
552 /* but some return 0 for streams too, sigh */
556 if (saveifp) { /* must use old fp? */
557 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
558 then dup the new fileno down
560 fd = PerlIO_fileno(fp);
562 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
563 if (saveofp != saveifp) { /* was a socket? */
564 PerlIO_close(saveofp);
570 if (PerlLIO_dup2(fd, savefd) < 0) {
571 (void)PerlIO_close(fp);
575 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
576 char newname[FILENAME_MAX+1];
577 if (PerlIO_getname(fp, newname)) {
578 if (fd == PerlIO_fileno(PerlIO_stdout())) Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
579 if (fd == PerlIO_fileno(PerlIO_stderr())) Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
584 sv = *av_fetch(PL_fdpid,fd,TRUE);
585 (void)SvUPGRADE(sv, SVt_IV);
588 sv = *av_fetch(PL_fdpid,savefd,TRUE);
590 (void)SvUPGRADE(sv, SVt_IV);
598 #if defined(HAS_FCNTL) && defined(F_SETFD)
600 int save_errno = errno;
601 fd = PerlIO_fileno(fp);
602 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
608 IoFLAGS(io) &= ~IOf_NOLINE;
610 if (IoTYPE(io) == IoTYPE_SOCKET
611 || (IoTYPE(io) == IoTYPE_WRONLY && S_ISCHR(PL_statbuf.st_mode)) ) {
613 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,mode,PerlIO_fileno(fp),0,0,NULL,num_svs,svp))) {
627 IoTYPE(io) = savetype;
632 Perl_nextargv(pTHX_ register GV *gv)
635 #ifndef FLEXFILENAMES
644 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
645 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
646 IoFLAGS(io) &= ~IOf_START;
648 if (!PL_argvout_stack)
649 PL_argvout_stack = newAV();
650 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
653 if (PL_filemode & (S_ISUID|S_ISGID)) {
654 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
656 (void)fchmod(PL_lastfd,PL_filemode);
658 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
662 while (av_len(GvAV(gv)) >= 0) {
664 sv = av_shift(GvAV(gv));
666 sv_setsv(GvSV(gv),sv);
667 SvSETMAGIC(GvSV(gv));
668 PL_oldname = SvPVx(GvSV(gv), oldlen);
669 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
671 TAINT_PROPER("inplace open");
672 if (oldlen == 1 && *PL_oldname == '-') {
673 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
674 return IoIFP(GvIOp(gv));
676 #ifndef FLEXFILENAMES
677 filedev = PL_statbuf.st_dev;
678 fileino = PL_statbuf.st_ino;
680 PL_filemode = PL_statbuf.st_mode;
681 fileuid = PL_statbuf.st_uid;
682 filegid = PL_statbuf.st_gid;
683 if (!S_ISREG(PL_filemode)) {
684 if (ckWARN_d(WARN_INPLACE))
685 Perl_warner(aTHX_ WARN_INPLACE,
686 "Can't do inplace edit: %s is not a regular file",
692 char *star = strchr(PL_inplace, '*');
694 char *begin = PL_inplace;
695 sv_setpvn(sv, "", 0);
697 sv_catpvn(sv, begin, star - begin);
698 sv_catpvn(sv, PL_oldname, oldlen);
700 } while ((star = strchr(begin, '*')));
705 sv_catpv(sv,PL_inplace);
707 #ifndef FLEXFILENAMES
708 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
709 && PL_statbuf.st_dev == filedev
710 && PL_statbuf.st_ino == fileino
712 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
716 if (ckWARN_d(WARN_INPLACE))
717 Perl_warner(aTHX_ WARN_INPLACE,
718 "Can't do inplace edit: %s would not be unique",
725 #if !defined(DOSISH) && !defined(__CYGWIN__)
726 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
727 if (ckWARN_d(WARN_INPLACE))
728 Perl_warner(aTHX_ WARN_INPLACE,
729 "Can't rename %s to %s: %s, skipping file",
730 PL_oldname, SvPVX(sv), Strerror(errno) );
736 (void)PerlLIO_unlink(SvPVX(sv));
737 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
738 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
741 (void)UNLINK(SvPVX(sv));
742 if (link(PL_oldname,SvPVX(sv)) < 0) {
743 if (ckWARN_d(WARN_INPLACE))
744 Perl_warner(aTHX_ WARN_INPLACE,
745 "Can't rename %s to %s: %s, skipping file",
746 PL_oldname, SvPVX(sv), Strerror(errno) );
750 (void)UNLINK(PL_oldname);
754 #if !defined(DOSISH) && !defined(AMIGAOS)
755 # ifndef VMS /* Don't delete; use automatic file versioning */
756 if (UNLINK(PL_oldname) < 0) {
757 if (ckWARN_d(WARN_INPLACE))
758 Perl_warner(aTHX_ WARN_INPLACE,
759 "Can't remove %s: %s, skipping file",
760 PL_oldname, Strerror(errno) );
766 Perl_croak(aTHX_ "Can't do inplace edit without backup");
770 sv_setpvn(sv,">",!PL_inplace);
771 sv_catpvn(sv,PL_oldname,oldlen);
772 SETERRNO(0,0); /* in case sprintf set errno */
774 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
775 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
777 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
778 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
781 if (ckWARN_d(WARN_INPLACE))
782 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
783 PL_oldname, Strerror(errno) );
787 setdefout(PL_argvoutgv);
788 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
789 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
791 (void)fchmod(PL_lastfd,PL_filemode);
793 # if !(defined(WIN32) && defined(__BORLANDC__))
794 /* Borland runtime creates a readonly file! */
795 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
798 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
800 (void)fchown(PL_lastfd,fileuid,filegid);
803 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
808 return IoIFP(GvIOp(gv));
811 if (ckWARN_d(WARN_INPLACE)) {
813 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
814 && !S_ISREG(PL_statbuf.st_mode))
816 Perl_warner(aTHX_ WARN_INPLACE,
817 "Can't do inplace edit: %s is not a regular file",
821 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
822 PL_oldname, Strerror(eno));
826 if (io && (IoFLAGS(io) & IOf_ARGV))
827 IoFLAGS(io) |= IOf_START;
829 (void)do_close(PL_argvoutgv,FALSE);
830 if (io && (IoFLAGS(io) & IOf_ARGV)
831 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
833 GV *oldout = (GV*)av_pop(PL_argvout_stack);
835 SvREFCNT_dec(oldout);
838 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
845 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
864 if (PerlProc_pipe(fd) < 0)
866 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
867 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
868 IoIFP(wstio) = IoOFP(wstio);
869 IoTYPE(rstio) = IoTYPE_RDONLY;
870 IoTYPE(wstio) = IoTYPE_WRONLY;
871 if (!IoIFP(rstio) || !IoOFP(wstio)) {
872 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
873 else PerlLIO_close(fd[0]);
874 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
875 else PerlLIO_close(fd[1]);
879 sv_setsv(sv,&PL_sv_yes);
883 sv_setsv(sv,&PL_sv_undef);
888 /* explicit renamed to avoid C++ conflict -- kja */
890 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
897 if (!gv || SvTYPE(gv) != SVt_PVGV) {
899 SETERRNO(EBADF,SS$_IVCHAN);
903 if (!io) { /* never opened */
905 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
906 report_evil_fh(gv, io, PL_op->op_type);
907 SETERRNO(EBADF,SS$_IVCHAN);
911 retval = io_close(io, not_implicit);
915 IoLINES_LEFT(io) = IoPAGE_LEN(io);
917 IoTYPE(io) = IoTYPE_CLOSED;
922 Perl_io_close(pTHX_ IO *io, bool not_implicit)
928 if (IoTYPE(io) == IoTYPE_PIPE) {
929 status = PerlProc_pclose(IoIFP(io));
931 STATUS_NATIVE_SET(status);
932 retval = (STATUS_POSIX == 0);
935 retval = (status != -1);
938 else if (IoTYPE(io) == IoTYPE_STD)
941 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
942 retval = (PerlIO_close(IoOFP(io)) != EOF);
943 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
946 retval = (PerlIO_close(IoIFP(io)) != EOF);
948 IoOFP(io) = IoIFP(io) = Nullfp;
950 else if (not_implicit) {
951 SETERRNO(EBADF,SS$_IVCHAN);
958 Perl_do_eof(pTHX_ GV *gv)
967 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
969 /* integrate to report_evil_fh()? */
972 SV* sv = sv_newmortal();
973 gv_efullname4(sv, gv, Nullch, FALSE);
974 name = SvPV_nolen(sv);
977 Perl_warner(aTHX_ WARN_IO,
978 "Filehandle %s opened only for output", name);
980 Perl_warner(aTHX_ WARN_IO,
981 "Filehandle opened only for output");
986 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
987 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
988 return FALSE; /* this is the most usual case */
991 ch = PerlIO_getc(IoIFP(io));
993 (void)PerlIO_ungetc(IoIFP(io),ch);
997 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
998 if (PerlIO_get_cnt(IoIFP(io)) < -1)
999 PerlIO_set_cnt(IoIFP(io),-1);
1001 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
1002 if (!nextargv(PL_argvgv)) /* get another fp handy */
1006 return TRUE; /* normal fp, definitely end of file */
1012 Perl_do_tell(pTHX_ GV *gv)
1014 register IO *io = 0;
1015 register PerlIO *fp;
1017 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1018 #ifdef ULTRIX_STDIO_BOTCH
1020 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1022 return PerlIO_tell(fp);
1024 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1025 report_evil_fh(gv, io, PL_op->op_type);
1026 SETERRNO(EBADF,RMS$_IFI);
1031 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1033 register IO *io = 0;
1034 register PerlIO *fp;
1036 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1037 #ifdef ULTRIX_STDIO_BOTCH
1039 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1041 return PerlIO_seek(fp, pos, whence) >= 0;
1043 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1044 report_evil_fh(gv, io, PL_op->op_type);
1045 SETERRNO(EBADF,RMS$_IFI);
1050 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1052 register IO *io = 0;
1053 register PerlIO *fp;
1055 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1056 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1057 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1058 report_evil_fh(gv, io, PL_op->op_type);
1059 SETERRNO(EBADF,RMS$_IFI);
1064 Perl_mode_from_discipline(pTHX_ SV *discp)
1066 int mode = O_BINARY;
1069 char *s = SvPV(discp,len);
1074 if (len > 3 && strnEQ(s+1, "raw", 3)
1075 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1084 if (len > 4 && strnEQ(s+1, "crlf", 4)
1085 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1094 goto fail_discipline;
1097 else if (isSPACE(*s)) {
1104 end = strchr(s+1, ':');
1107 #ifndef PERLIO_LAYERS
1108 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1119 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1121 /* The old body of this is now in non-LAYER part of perlio.c
1122 * This is a stub for any XS code which might have been calling it.
1124 char *name = (O_BINARY != O_TEXT && !(mode & O_BINARY)) ? ":crlf" : ":raw";
1125 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1128 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1129 /* code courtesy of William Kucharski */
1132 I32 my_chsize(fd, length)
1133 I32 fd; /* file descriptor */
1134 Off_t length; /* length to set file to */
1137 struct stat filebuf;
1139 if (PerlLIO_fstat(fd, &filebuf) < 0)
1142 if (filebuf.st_size < length) {
1144 /* extend file length */
1146 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1149 /* write a "0" byte */
1151 if ((PerlLIO_write(fd, "", 1)) != 1)
1155 /* truncate length */
1159 fl.l_start = length;
1160 fl.l_type = F_WRLCK; /* write lock on file space */
1163 * This relies on the UNDOCUMENTED F_FREESP argument to
1164 * fcntl(2), which truncates the file so that it ends at the
1165 * position indicated by fl.l_start.
1167 * Will minor miracles never cease?
1170 if (fcntl(fd, F_FREESP, &fl) < 0)
1177 #endif /* F_FREESP */
1180 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1182 register char *tmps;
1185 /* assuming fp is checked earlier */
1191 if (SvIOK(sv) && SvIVX(sv) != 0) {
1192 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1193 return !PerlIO_error(fp);
1195 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1196 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1197 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1198 return !PerlIO_error(fp);
1201 switch (SvTYPE(sv)) {
1203 if (ckWARN(WARN_UNINITIALIZED))
1211 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1213 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1214 return !PerlIO_error(fp);
1218 if (PerlIO_isutf8(fp)) {
1220 sv_utf8_upgrade(sv = sv_mortalcopy(sv));
1222 else if (DO_UTF8(sv)) {
1223 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)) {
1224 Perl_warner(aTHX_ WARN_UTF8, "Wide character in print");
1227 tmps = SvPV(sv, len);
1230 /* To detect whether the process is about to overstep its
1231 * filesize limit we would need getrlimit(). We could then
1232 * also transparently raise the limit with setrlimit() --
1233 * but only until the system hard limit/the filesystem limit,
1234 * at which we would get EPERM. Note that when using buffered
1235 * io the write failure can be delayed until the flush/close. --jhi */
1236 if (len && (PerlIO_write(fp,tmps,len) == 0))
1238 return !PerlIO_error(fp);
1248 if (PL_op->op_flags & OPf_REF) {
1253 if (io && IoIFP(io)) {
1255 sv_setpv(PL_statname,"");
1256 PL_laststype = OP_STAT;
1257 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1261 return PL_laststatval;
1262 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1263 report_evil_fh(gv, io, PL_op->op_type);
1265 sv_setpv(PL_statname,"");
1266 return (PL_laststatval = -1);
1274 if (SvTYPE(sv) == SVt_PVGV) {
1278 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1285 sv_setpv(PL_statname, s);
1286 PL_laststype = OP_STAT;
1287 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1288 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1289 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1290 return PL_laststatval;
1300 if (PL_op->op_flags & OPf_REF) {
1302 if (cGVOP_gv == PL_defgv) {
1303 if (PL_laststype != OP_LSTAT)
1304 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1305 return PL_laststatval;
1307 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1310 PL_laststype = OP_LSTAT;
1314 sv_setpv(PL_statname,SvPV(sv, n_a));
1315 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1316 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1317 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1318 return PL_laststatval;
1322 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1324 return do_aexec5(really, mark, sp, 0, 0);
1328 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1329 int fd, int do_report)
1331 #ifdef MACOS_TRADITIONAL
1332 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1335 char *tmps = Nullch;
1339 New(401,PL_Argv, sp - mark + 1, char*);
1341 while (++mark <= sp) {
1343 *a++ = SvPVx(*mark, n_a);
1349 tmps = SvPV(really, n_a);
1350 if ((!really && *PL_Argv[0] != '/') ||
1351 (really && *tmps != '/')) /* will execvp use PATH? */
1352 TAINT_ENV(); /* testing IFS here is overkill, probably */
1353 if (really && *tmps)
1354 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1356 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1357 if (ckWARN(WARN_EXEC))
1358 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1359 (really ? tmps : PL_Argv[0]), Strerror(errno));
1363 PerlLIO_write(fd, (void*)&e, sizeof(int));
1373 Perl_do_execfree(pTHX)
1377 PL_Argv = Null(char **);
1385 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1388 Perl_do_exec(pTHX_ char *cmd)
1390 return do_exec3(cmd,0,0);
1394 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1399 while (*cmd && isSPACE(*cmd))
1402 /* save an extra exec if possible */
1407 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1408 strnEQ(cmd+PL_cshlen," -c",3)) {
1410 s = cmd+PL_cshlen+3;
1424 if (s[-1] == '\'') {
1426 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1435 /* see if there are shell metacharacters in it */
1437 if (*cmd == '.' && isSPACE(cmd[1]))
1440 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1443 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1447 for (s = cmd; *s; s++) {
1448 if (*s != ' ' && !isALPHA(*s) &&
1449 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1450 if (*s == '\n' && !s[1]) {
1454 /* handle the 2>&1 construct at the end */
1455 if (*s == '>' && s[1] == '&' && s[2] == '1'
1456 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1457 && (!s[3] || isSPACE(s[3])))
1461 while (*t && isSPACE(*t))
1463 if (!*t && (dup2(1,2) != -1)) {
1469 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1474 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1475 PL_Cmd = savepvn(cmd, s-cmd);
1477 for (s = PL_Cmd; *s;) {
1478 while (*s && isSPACE(*s)) s++;
1481 while (*s && !isSPACE(*s)) s++;
1487 PerlProc_execvp(PL_Argv[0],PL_Argv);
1488 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1495 if (ckWARN(WARN_EXEC))
1496 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1497 PL_Argv[0], Strerror(errno));
1499 PerlLIO_write(fd, (void*)&e, sizeof(int));
1508 #endif /* OS2 || WIN32 */
1511 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1515 register I32 tot = 0;
1518 SV **oldmark = mark;
1521 #define APPLY_TAINT_PROPER() \
1523 if (PL_tainted) { TAINT_PROPER(what); } \
1526 /* This is a first heuristic; it doesn't catch tainting magic. */
1528 while (++mark <= sp) {
1529 if (SvTAINTED(*mark)) {
1539 APPLY_TAINT_PROPER();
1542 APPLY_TAINT_PROPER();
1544 while (++mark <= sp) {
1545 char *name = SvPVx(*mark, n_a);
1546 APPLY_TAINT_PROPER();
1547 if (PerlLIO_chmod(name, val))
1555 APPLY_TAINT_PROPER();
1556 if (sp - mark > 2) {
1557 val = SvIVx(*++mark);
1558 val2 = SvIVx(*++mark);
1559 APPLY_TAINT_PROPER();
1561 while (++mark <= sp) {
1562 char *name = SvPVx(*mark, n_a);
1563 APPLY_TAINT_PROPER();
1564 if (PerlLIO_chown(name, val, val2))
1571 XXX Should we make lchown() directly available from perl?
1572 For now, we'll let Configure test for HAS_LCHOWN, but do
1573 nothing in the core.
1579 APPLY_TAINT_PROPER();
1582 s = SvPVx(*++mark, n_a);
1584 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1586 if (!(val = whichsig(s)))
1587 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1591 APPLY_TAINT_PROPER();
1594 /* kill() doesn't do process groups (job trees?) under VMS */
1595 if (val < 0) val = -val;
1596 if (val == SIGKILL) {
1597 # include <starlet.h>
1598 /* Use native sys$delprc() to insure that target process is
1599 * deleted; supervisor-mode images don't pay attention to
1600 * CRTL's emulation of Unix-style signals and kill()
1602 while (++mark <= sp) {
1603 I32 proc = SvIVx(*mark);
1604 register unsigned long int __vmssts;
1605 APPLY_TAINT_PROPER();
1606 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1610 case SS$_NOSUCHNODE:
1611 SETERRNO(ESRCH,__vmssts);
1614 SETERRNO(EPERM,__vmssts);
1617 SETERRNO(EVMSERR,__vmssts);
1626 while (++mark <= sp) {
1627 I32 proc = SvIVx(*mark);
1628 APPLY_TAINT_PROPER();
1630 if (PerlProc_killpg(proc,val)) /* BSD */
1632 if (PerlProc_kill(-proc,val)) /* SYSV */
1638 while (++mark <= sp) {
1639 I32 proc = SvIVx(*mark);
1640 APPLY_TAINT_PROPER();
1641 if (PerlProc_kill(proc, val))
1649 APPLY_TAINT_PROPER();
1651 while (++mark <= sp) {
1652 s = SvPVx(*mark, n_a);
1653 APPLY_TAINT_PROPER();
1654 if (PL_euid || PL_unsafe) {
1658 else { /* don't let root wipe out directories without -U */
1659 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1671 APPLY_TAINT_PROPER();
1672 if (sp - mark > 2) {
1673 #if defined(I_UTIME) || defined(VMS)
1674 struct utimbuf utbuf;
1682 SV* accessed = *++mark;
1683 SV* modified = *++mark;
1684 void * utbufp = &utbuf;
1686 /* be like C, and if both times are undefined, let the C
1687 library figure out what to do. This usually means
1690 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1693 Zero(&utbuf, sizeof utbuf, char);
1695 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1696 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1698 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1699 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1701 APPLY_TAINT_PROPER();
1703 while (++mark <= sp) {
1704 char *name = SvPVx(*mark, n_a);
1705 APPLY_TAINT_PROPER();
1706 if (PerlLIO_utime(name, utbufp))
1717 #undef APPLY_TAINT_PROPER
1720 /* Do the permissions allow some operation? Assumes statcache already set. */
1721 #ifndef VMS /* VMS' cando is in vms.c */
1723 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1724 /* Note: we use `effective' both for uids and gids.
1725 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1728 /* [Comments and code from Len Reed]
1729 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1730 * to write-protected files. The execute permission bit is set
1731 * by the Miscrosoft C library stat() function for the following:
1736 * All files and directories are readable.
1737 * Directories and special files, e.g. "CON", cannot be
1739 * [Comment by Tom Dinger -- a directory can have the write-protect
1740 * bit set in the file system, but DOS permits changes to
1741 * the directory anyway. In addition, all bets are off
1742 * here for networked software, such as Novell and
1746 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1747 * too so it will actually look into the files for magic numbers
1749 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1751 #else /* ! DOSISH */
1752 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1753 if (mode == S_IXUSR) {
1754 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1758 return TRUE; /* root reads and writes anything */
1761 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1762 if (statbufp->st_mode & mode)
1763 return TRUE; /* ok as "user" */
1765 else if (ingroup(statbufp->st_gid,effective)) {
1766 if (statbufp->st_mode & mode >> 3)
1767 return TRUE; /* ok as "group" */
1769 else if (statbufp->st_mode & mode >> 6)
1770 return TRUE; /* ok as "other" */
1772 #endif /* ! DOSISH */
1777 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1779 #ifdef MACOS_TRADITIONAL
1780 /* This is simply not correct for AppleShare, but fix it yerself. */
1783 if (testgid == (effective ? PL_egid : PL_gid))
1785 #ifdef HAS_GETGROUPS
1790 Groups_t gary[NGROUPS];
1793 anum = getgroups(NGROUPS,gary);
1795 if (gary[anum] == testgid)
1803 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1806 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1811 key = (key_t)SvNVx(*++mark);
1812 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1813 flags = SvIVx(*++mark);
1819 return msgget(key, flags);
1823 return semget(key, n, flags);
1827 return shmget(key, n, flags);
1829 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1831 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1834 return -1; /* should never happen */
1838 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1842 I32 id, n, cmd, infosize, getinfo;
1845 id = SvIVx(*++mark);
1846 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1847 cmd = SvIVx(*++mark);
1850 getinfo = (cmd == IPC_STAT);
1856 if (cmd == IPC_STAT || cmd == IPC_SET)
1857 infosize = sizeof(struct msqid_ds);
1862 if (cmd == IPC_STAT || cmd == IPC_SET)
1863 infosize = sizeof(struct shmid_ds);
1869 if (cmd == IPC_STAT || cmd == IPC_SET)
1870 infosize = sizeof(struct semid_ds);
1871 else if (cmd == GETALL || cmd == SETALL)
1873 struct semid_ds semds;
1875 #ifdef EXTRA_F_IN_SEMUN_BUF
1876 semun.buff = &semds;
1880 getinfo = (cmd == GETALL);
1881 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1883 infosize = semds.sem_nsems * sizeof(short);
1884 /* "short" is technically wrong but much more portable
1885 than guessing about u_?short(_t)? */
1888 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1892 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1894 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1903 SvPV_force(astr, len);
1904 a = SvGROW(astr, infosize+1);
1908 a = SvPV(astr, len);
1909 if (len != infosize)
1910 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1919 a = INT2PTR(char *,i); /* ouch */
1926 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1932 union semun unsemds;
1934 #ifdef EXTRA_F_IN_SEMUN_BUF
1935 unsemds.buff = (struct semid_ds *)a;
1937 unsemds.buf = (struct semid_ds *)a;
1939 ret = Semctl(id, n, cmd, unsemds);
1941 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1948 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1952 if (getinfo && ret >= 0) {
1953 SvCUR_set(astr, infosize);
1954 *SvEND(astr) = '\0';
1961 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1966 I32 id, msize, flags;
1969 id = SvIVx(*++mark);
1971 flags = SvIVx(*++mark);
1972 mbuf = SvPV(mstr, len);
1973 if ((msize = len - sizeof(long)) < 0)
1974 Perl_croak(aTHX_ "Arg too short for msgsnd");
1976 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1978 Perl_croak(aTHX_ "msgsnd not implemented");
1983 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1989 I32 id, msize, flags, ret;
1992 id = SvIVx(*++mark);
1994 /* suppress warning when reading into undef var --jhi */
1996 sv_setpvn(mstr, "", 0);
1997 msize = SvIVx(*++mark);
1998 mtype = (long)SvIVx(*++mark);
1999 flags = SvIVx(*++mark);
2000 SvPV_force(mstr, len);
2001 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
2004 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
2006 SvCUR_set(mstr, sizeof(long)+ret);
2007 *SvEND(mstr) = '\0';
2008 #ifndef INCOMPLETE_TAINTS
2009 /* who knows who has been playing with this message? */
2015 Perl_croak(aTHX_ "msgrcv not implemented");
2020 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2028 id = SvIVx(*++mark);
2030 opbuf = SvPV(opstr, opsize);
2031 if (opsize < sizeof(struct sembuf)
2032 || (opsize % sizeof(struct sembuf)) != 0) {
2033 SETERRNO(EINVAL,LIB$_INVARG);
2037 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
2039 Perl_croak(aTHX_ "semop not implemented");
2044 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2049 I32 id, mpos, msize;
2051 struct shmid_ds shmds;
2053 id = SvIVx(*++mark);
2055 mpos = SvIVx(*++mark);
2056 msize = SvIVx(*++mark);
2058 if (shmctl(id, IPC_STAT, &shmds) == -1)
2060 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2061 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2064 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2065 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2067 if (optype == OP_SHMREAD) {
2068 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2070 sv_setpvn(mstr, "", 0);
2071 SvPV_force(mstr, len);
2072 mbuf = SvGROW(mstr, msize+1);
2074 Copy(shm + mpos, mbuf, msize, char);
2075 SvCUR_set(mstr, msize);
2076 *SvEND(mstr) = '\0';
2078 #ifndef INCOMPLETE_TAINTS
2079 /* who knows who has been playing with this shared memory? */
2086 mbuf = SvPV(mstr, len);
2087 if ((n = len) > msize)
2089 Copy(mbuf, shm + mpos, n, char);
2091 memzero(shm + mpos + n, msize - n);
2095 Perl_croak(aTHX_ "shm I/O not implemented");
2099 #endif /* SYSV IPC */
2102 =for apidoc start_glob
2104 Function called by C<do_readline> to spawn a glob (or do the glob inside
2105 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2106 this glob starter is only used by miniperl during the build proccess.
2107 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2113 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2115 SV *tmpcmd = NEWSV(55, 0);
2119 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2120 /* since spawning off a process is a real performance hit */
2122 #include <descrip.h>
2123 #include <lib$routines.h>
2126 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2127 char vmsspec[NAM$C_MAXRSS+1];
2128 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2129 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2132 struct dsc$descriptor_s wilddsc
2133 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2134 struct dsc$descriptor_vs rsdsc
2135 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2136 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2138 /* We could find out if there's an explicit dev/dir or version
2139 by peeking into lib$find_file's internal context at
2140 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2141 but that's unsupported, so I don't want to do it now and
2142 have it bite someone in the future. */
2143 cp = SvPV(tmpglob,i);
2145 if (cp[i] == ';') hasver = 1;
2147 if (sts) hasver = 1;
2151 hasdir = isunix = 1;
2154 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2159 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2161 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2162 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2163 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2164 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2165 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2166 &dfltdsc,NULL,NULL,NULL))&1)) {
2167 end = rstr + (unsigned long int) *rslt;
2168 if (!hasver) while (*end != ';') end--;
2169 *(end++) = '\n'; *end = '\0';
2170 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2172 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2177 while (*(--begin) != ']' && *begin != '>') ;
2180 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2182 if (cxt) (void)lib$find_file_end(&cxt);
2183 if (ok && sts != RMS$_NMF &&
2184 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
2187 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2189 PerlIO_close(tmpfp);
2193 PerlIO_rewind(tmpfp);
2194 IoTYPE(io) = IoTYPE_RDONLY;
2195 IoIFP(io) = fp = tmpfp;
2196 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2201 #ifdef MACOS_TRADITIONAL
2202 sv_setpv(tmpcmd, "glob ");
2203 sv_catsv(tmpcmd, tmpglob);
2204 sv_catpv(tmpcmd, " |");
2208 sv_setpv(tmpcmd, "for a in ");
2209 sv_catsv(tmpcmd, tmpglob);
2210 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2213 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2214 sv_catsv(tmpcmd, tmpglob);
2216 sv_setpv(tmpcmd, "perlglob ");
2217 sv_catsv(tmpcmd, tmpglob);
2218 sv_catpv(tmpcmd, " |");
2223 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2224 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2225 sv_catsv(tmpcmd, tmpglob);
2226 sv_catpv(tmpcmd, "' 2>/dev/null |");
2228 sv_setpv(tmpcmd, "echo ");
2229 sv_catsv(tmpcmd, tmpglob);
2231 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2233 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2236 #endif /* !DOSISH */
2237 #endif /* MACOS_TRADITIONAL */
2238 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2239 FALSE, O_RDONLY, 0, Nullfp);