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 */
176 type = savepvn(name, len);
179 /* Loose trailing white space */
180 while (tend > type && isSPACE(tend[-1]))
183 /* New style explict name, type is just mode and discipline/layer info */
185 name = SvOK(*svp) ? SvPV(*svp, l) : "";
187 name = savepvn(name, len);
190 for (; isSPACE(*type); type++) ;
197 if ((*type == IoTYPE_RDWR) && /* scary */
198 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
199 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
200 TAINT_PROPER("open");
205 if (*type == IoTYPE_PIPE) {
207 if (type[1] != IoTYPE_STD) {
209 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
214 for (type++; isSPACE(*type); type++) ;
220 /* command is missing 19990114 */
221 if (ckWARN(WARN_PIPE))
222 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
226 if (strNE(name,"-") || num_svs)
228 TAINT_PROPER("piped open");
229 if (!num_svs && name[len-1] == '|') {
231 if (ckWARN(WARN_PIPE))
232 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
241 fp = PerlProc_popen_list(mode, num_svs, svp);
244 fp = PerlProc_popen(name,mode);
247 else if (*type == IoTYPE_WRONLY) {
248 TAINT_PROPER("open");
250 if (*type == IoTYPE_WRONLY) {
251 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
252 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
273 if (!num_svs && !*type && supplied_fp) {
274 /* "<+&" etc. is used by typemaps */
279 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
281 if (num_svs && SvIOK(*svp)) {
284 else if (isDIGIT(*type)) {
286 for (; isSPACE(*type); type++) ;
292 thatio = sv_2io(*svp);
297 for (; isSPACE(*type); type++) ;
298 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
299 thatio = GvIO(thatgv);
303 SETERRNO(EINVAL,SS$_IVCHAN);
308 PerlIO *fp = IoIFP(thatio);
309 /* Flush stdio buffer before dup. --mjd
310 * Unfortunately SEEK_CURing 0 seems to
311 * be optimized away on most platforms;
312 * only Solaris and Linux seem to flush
315 /* sfio fails to clear error on next
316 sfwrite, contrary to documentation.
318 if (PerlIO_seek(fp, 0, SEEK_CUR) == -1)
321 /* On the other hand, do all platforms
322 * take gracefully to flushing a read-only
323 * filehandle? Perhaps we should do
324 * fsetpos(src)+fgetpos(dst)? --nik */
326 fd = PerlIO_fileno(fp);
327 /* When dup()ing STDIN, STDOUT or STDERR
328 * explicitly set appropriate access mode */
329 if (IoIFP(thatio) == PerlIO_stdout()
330 || IoIFP(thatio) == PerlIO_stderr())
331 IoTYPE(io) = IoTYPE_WRONLY;
332 else if (IoIFP(thatio) == PerlIO_stdin())
333 IoTYPE(io) = IoTYPE_RDONLY;
334 /* When dup()ing a socket, say result is
336 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
337 IoTYPE(io) = IoTYPE_SOCKET;
343 fd = PerlLIO_dup(fd);
348 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
356 Perl_croak(aTHX_ "More than one argument to '>' open");
359 for (; isSPACE(*type); type++) ;
360 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
363 fp = PerlIO_stdout();
364 IoTYPE(io) = IoTYPE_STD;
368 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
373 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
377 else if (*type == IoTYPE_RDONLY) {
379 Perl_croak(aTHX_ "More than one argument to '<' open");
382 for (type++; isSPACE(*type); type++) ;
392 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
396 IoTYPE(io) = IoTYPE_STD;
400 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
405 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
408 else if ((num_svs && type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
409 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
411 type += 2; /* skip over '-|' */
415 while (tend > type && isSPACE(tend[-1]))
418 for (; isSPACE(*type); type++) ;
423 /* command is missing 19990114 */
424 if (ckWARN(WARN_PIPE))
425 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
429 if (strNE(name,"-") || num_svs)
431 TAINT_PROPER("piped open");
438 fp = PerlProc_popen_list(mode,num_svs,svp);
441 fp = PerlProc_popen(name,mode);
443 IoTYPE(io) = IoTYPE_PIPE;
449 IoTYPE(io) = IoTYPE_RDONLY;
451 for (; isSPACE(*name); name++) ;
457 if (strEQ(name,"-")) {
459 IoTYPE(io) = IoTYPE_STD;
463 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
468 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
473 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
474 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
478 if (ckWARN(WARN_IO)) {
479 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
480 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
481 Perl_warner(aTHX_ WARN_IO,
482 "Filehandle STD%s opened only for input",
483 (fp == PerlIO_stdout()) ? "OUT" : "ERR");
485 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
486 Perl_warner(aTHX_ WARN_IO,
487 "Filehandle STDIN opened only for output");
491 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD &&
492 /* FIXME: This next term is a hack to avoid fileno on PerlIO::Scalar */
493 !(num_svs && SvROK(*svp))) {
494 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
495 (void)PerlIO_close(fp);
498 if (S_ISSOCK(PL_statbuf.st_mode))
499 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
503 !(PL_statbuf.st_mode & S_IFMT)
507 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
508 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
509 ) { /* on OS's that return 0 on fstat()ed pipe */
511 Sock_size_t buflen = sizeof tmpbuf;
512 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
514 || errno != ENOTSOCK)
515 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
516 /* but some return 0 for streams too, sigh */
520 if (saveifp) { /* must use old fp? */
521 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
522 then dup the new fileno down
524 fd = PerlIO_fileno(fp);
526 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
527 if (saveofp != saveifp) { /* was a socket? */
528 PerlIO_close(saveofp);
534 if (PerlLIO_dup2(fd, savefd) < 0) {
535 (void)PerlIO_close(fp);
539 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
540 char newname[FILENAME_MAX+1];
541 if (PerlIO_getname(fp, newname)) {
542 if (fd == PerlIO_fileno(PerlIO_stdout())) Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
543 if (fd == PerlIO_fileno(PerlIO_stderr())) Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
548 sv = *av_fetch(PL_fdpid,fd,TRUE);
549 (void)SvUPGRADE(sv, SVt_IV);
552 sv = *av_fetch(PL_fdpid,savefd,TRUE);
554 (void)SvUPGRADE(sv, SVt_IV);
562 #if defined(HAS_FCNTL) && defined(F_SETFD)
564 int save_errno = errno;
565 fd = PerlIO_fileno(fp);
566 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
572 IoFLAGS(io) &= ~IOf_NOLINE;
574 if (IoTYPE(io) == IoTYPE_SOCKET
575 || (IoTYPE(io) == IoTYPE_WRONLY && S_ISCHR(PL_statbuf.st_mode)) ) {
577 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,mode,PerlIO_fileno(fp),0,0,NULL,num_svs,svp))) {
591 IoTYPE(io) = savetype;
596 Perl_nextargv(pTHX_ register GV *gv)
599 #ifndef FLEXFILENAMES
608 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
609 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
610 IoFLAGS(io) &= ~IOf_START;
612 if (!PL_argvout_stack)
613 PL_argvout_stack = newAV();
614 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
617 if (PL_filemode & (S_ISUID|S_ISGID)) {
618 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
620 (void)fchmod(PL_lastfd,PL_filemode);
622 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
626 while (av_len(GvAV(gv)) >= 0) {
628 sv = av_shift(GvAV(gv));
630 sv_setsv(GvSV(gv),sv);
631 SvSETMAGIC(GvSV(gv));
632 PL_oldname = SvPVx(GvSV(gv), oldlen);
633 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
635 TAINT_PROPER("inplace open");
636 if (oldlen == 1 && *PL_oldname == '-') {
637 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
638 return IoIFP(GvIOp(gv));
640 #ifndef FLEXFILENAMES
641 filedev = PL_statbuf.st_dev;
642 fileino = PL_statbuf.st_ino;
644 PL_filemode = PL_statbuf.st_mode;
645 fileuid = PL_statbuf.st_uid;
646 filegid = PL_statbuf.st_gid;
647 if (!S_ISREG(PL_filemode)) {
648 if (ckWARN_d(WARN_INPLACE))
649 Perl_warner(aTHX_ WARN_INPLACE,
650 "Can't do inplace edit: %s is not a regular file",
656 char *star = strchr(PL_inplace, '*');
658 char *begin = PL_inplace;
659 sv_setpvn(sv, "", 0);
661 sv_catpvn(sv, begin, star - begin);
662 sv_catpvn(sv, PL_oldname, oldlen);
664 } while ((star = strchr(begin, '*')));
669 sv_catpv(sv,PL_inplace);
671 #ifndef FLEXFILENAMES
672 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
673 && PL_statbuf.st_dev == filedev
674 && PL_statbuf.st_ino == fileino
676 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
680 if (ckWARN_d(WARN_INPLACE))
681 Perl_warner(aTHX_ WARN_INPLACE,
682 "Can't do inplace edit: %s would not be unique",
689 #if !defined(DOSISH) && !defined(__CYGWIN__)
690 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
691 if (ckWARN_d(WARN_INPLACE))
692 Perl_warner(aTHX_ WARN_INPLACE,
693 "Can't rename %s to %s: %s, skipping file",
694 PL_oldname, SvPVX(sv), Strerror(errno) );
700 (void)PerlLIO_unlink(SvPVX(sv));
701 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
702 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
705 (void)UNLINK(SvPVX(sv));
706 if (link(PL_oldname,SvPVX(sv)) < 0) {
707 if (ckWARN_d(WARN_INPLACE))
708 Perl_warner(aTHX_ WARN_INPLACE,
709 "Can't rename %s to %s: %s, skipping file",
710 PL_oldname, SvPVX(sv), Strerror(errno) );
714 (void)UNLINK(PL_oldname);
718 #if !defined(DOSISH) && !defined(AMIGAOS)
719 # ifndef VMS /* Don't delete; use automatic file versioning */
720 if (UNLINK(PL_oldname) < 0) {
721 if (ckWARN_d(WARN_INPLACE))
722 Perl_warner(aTHX_ WARN_INPLACE,
723 "Can't remove %s: %s, skipping file",
724 PL_oldname, Strerror(errno) );
730 Perl_croak(aTHX_ "Can't do inplace edit without backup");
734 sv_setpvn(sv,">",!PL_inplace);
735 sv_catpvn(sv,PL_oldname,oldlen);
736 SETERRNO(0,0); /* in case sprintf set errno */
738 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
739 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
741 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
742 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
745 if (ckWARN_d(WARN_INPLACE))
746 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
747 PL_oldname, Strerror(errno) );
751 setdefout(PL_argvoutgv);
752 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
753 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
755 (void)fchmod(PL_lastfd,PL_filemode);
757 # if !(defined(WIN32) && defined(__BORLANDC__))
758 /* Borland runtime creates a readonly file! */
759 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
762 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
764 (void)fchown(PL_lastfd,fileuid,filegid);
767 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
772 return IoIFP(GvIOp(gv));
775 if (ckWARN_d(WARN_INPLACE)) {
777 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
778 && !S_ISREG(PL_statbuf.st_mode))
780 Perl_warner(aTHX_ WARN_INPLACE,
781 "Can't do inplace edit: %s is not a regular file",
785 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
786 PL_oldname, Strerror(eno));
790 if (io && (IoFLAGS(io) & IOf_ARGV))
791 IoFLAGS(io) |= IOf_START;
793 (void)do_close(PL_argvoutgv,FALSE);
794 if (io && (IoFLAGS(io) & IOf_ARGV)
795 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
797 GV *oldout = (GV*)av_pop(PL_argvout_stack);
799 SvREFCNT_dec(oldout);
802 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
809 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
828 if (PerlProc_pipe(fd) < 0)
830 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
831 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
832 IoIFP(wstio) = IoOFP(wstio);
833 IoTYPE(rstio) = IoTYPE_RDONLY;
834 IoTYPE(wstio) = IoTYPE_WRONLY;
835 if (!IoIFP(rstio) || !IoOFP(wstio)) {
836 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
837 else PerlLIO_close(fd[0]);
838 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
839 else PerlLIO_close(fd[1]);
843 sv_setsv(sv,&PL_sv_yes);
847 sv_setsv(sv,&PL_sv_undef);
852 /* explicit renamed to avoid C++ conflict -- kja */
854 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
861 if (!gv || SvTYPE(gv) != SVt_PVGV) {
863 SETERRNO(EBADF,SS$_IVCHAN);
867 if (!io) { /* never opened */
869 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
870 report_evil_fh(gv, io, PL_op->op_type);
871 SETERRNO(EBADF,SS$_IVCHAN);
875 retval = io_close(io, not_implicit);
879 IoLINES_LEFT(io) = IoPAGE_LEN(io);
881 IoTYPE(io) = IoTYPE_CLOSED;
886 Perl_io_close(pTHX_ IO *io, bool not_implicit)
892 if (IoTYPE(io) == IoTYPE_PIPE) {
893 status = PerlProc_pclose(IoIFP(io));
895 STATUS_NATIVE_SET(status);
896 retval = (STATUS_POSIX == 0);
899 retval = (status != -1);
902 else if (IoTYPE(io) == IoTYPE_STD)
905 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
906 retval = (PerlIO_close(IoOFP(io)) != EOF);
907 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
910 retval = (PerlIO_close(IoIFP(io)) != EOF);
912 IoOFP(io) = IoIFP(io) = Nullfp;
914 else if (not_implicit) {
915 SETERRNO(EBADF,SS$_IVCHAN);
922 Perl_do_eof(pTHX_ GV *gv)
931 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
933 /* integrate to report_evil_fh()? */
936 SV* sv = sv_newmortal();
937 gv_efullname4(sv, gv, Nullch, FALSE);
938 name = SvPV_nolen(sv);
941 Perl_warner(aTHX_ WARN_IO,
942 "Filehandle %s opened only for output", name);
944 Perl_warner(aTHX_ WARN_IO,
945 "Filehandle opened only for output");
950 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
951 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
952 return FALSE; /* this is the most usual case */
955 ch = PerlIO_getc(IoIFP(io));
957 (void)PerlIO_ungetc(IoIFP(io),ch);
961 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
962 if (PerlIO_get_cnt(IoIFP(io)) < -1)
963 PerlIO_set_cnt(IoIFP(io),-1);
965 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
966 if (!nextargv(PL_argvgv)) /* get another fp handy */
970 return TRUE; /* normal fp, definitely end of file */
976 Perl_do_tell(pTHX_ GV *gv)
981 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
982 #ifdef ULTRIX_STDIO_BOTCH
984 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
986 return PerlIO_tell(fp);
988 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
989 report_evil_fh(gv, io, PL_op->op_type);
990 SETERRNO(EBADF,RMS$_IFI);
995 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1000 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1001 #ifdef ULTRIX_STDIO_BOTCH
1003 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1005 return PerlIO_seek(fp, pos, whence) >= 0;
1007 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1008 report_evil_fh(gv, io, PL_op->op_type);
1009 SETERRNO(EBADF,RMS$_IFI);
1014 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1016 register IO *io = 0;
1017 register PerlIO *fp;
1019 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1020 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1021 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1022 report_evil_fh(gv, io, PL_op->op_type);
1023 SETERRNO(EBADF,RMS$_IFI);
1028 Perl_mode_from_discipline(pTHX_ SV *discp)
1030 int mode = O_BINARY;
1033 char *s = SvPV(discp,len);
1038 if (len > 3 && strnEQ(s+1, "raw", 3)
1039 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1048 if (len > 4 && strnEQ(s+1, "crlf", 4)
1049 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1058 goto fail_discipline;
1061 else if (isSPACE(*s)) {
1068 end = strchr(s+1, ':');
1071 #ifndef PERLIO_LAYERS
1072 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1083 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1085 /* The old body of this is now in non-LAYER part of perlio.c
1086 * This is a stub for any XS code which might have been calling it.
1088 char *name = (O_BINARY != O_TEXT && !(mode & O_BINARY)) ? ":crlf" : ":raw";
1089 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1092 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1093 /* code courtesy of William Kucharski */
1096 I32 my_chsize(fd, length)
1097 I32 fd; /* file descriptor */
1098 Off_t length; /* length to set file to */
1101 struct stat filebuf;
1103 if (PerlLIO_fstat(fd, &filebuf) < 0)
1106 if (filebuf.st_size < length) {
1108 /* extend file length */
1110 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1113 /* write a "0" byte */
1115 if ((PerlLIO_write(fd, "", 1)) != 1)
1119 /* truncate length */
1123 fl.l_start = length;
1124 fl.l_type = F_WRLCK; /* write lock on file space */
1127 * This relies on the UNDOCUMENTED F_FREESP argument to
1128 * fcntl(2), which truncates the file so that it ends at the
1129 * position indicated by fl.l_start.
1131 * Will minor miracles never cease?
1134 if (fcntl(fd, F_FREESP, &fl) < 0)
1141 #endif /* F_FREESP */
1144 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1146 register char *tmps;
1149 /* assuming fp is checked earlier */
1155 if (SvIOK(sv) && SvIVX(sv) != 0) {
1156 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1157 return !PerlIO_error(fp);
1159 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1160 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1161 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1162 return !PerlIO_error(fp);
1165 switch (SvTYPE(sv)) {
1167 if (ckWARN(WARN_UNINITIALIZED))
1175 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1177 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1178 return !PerlIO_error(fp);
1182 if (PerlIO_isutf8(fp)) {
1184 sv_utf8_upgrade(sv = sv_mortalcopy(sv));
1186 else if (DO_UTF8(sv)) {
1187 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
1188 && ckWARN(WARN_UTF8))
1190 Perl_warner(aTHX_ WARN_UTF8, "Wide character in print");
1193 tmps = SvPV(sv, len);
1196 /* To detect whether the process is about to overstep its
1197 * filesize limit we would need getrlimit(). We could then
1198 * also transparently raise the limit with setrlimit() --
1199 * but only until the system hard limit/the filesystem limit,
1200 * at which we would get EPERM. Note that when using buffered
1201 * io the write failure can be delayed until the flush/close. --jhi */
1202 if (len && (PerlIO_write(fp,tmps,len) == 0))
1204 return !PerlIO_error(fp);
1214 if (PL_op->op_flags & OPf_REF) {
1219 if (io && IoIFP(io)) {
1221 sv_setpv(PL_statname,"");
1222 PL_laststype = OP_STAT;
1223 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1227 return PL_laststatval;
1228 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1229 report_evil_fh(gv, io, PL_op->op_type);
1231 sv_setpv(PL_statname,"");
1232 return (PL_laststatval = -1);
1240 if (SvTYPE(sv) == SVt_PVGV) {
1244 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1251 sv_setpv(PL_statname, s);
1252 PL_laststype = OP_STAT;
1253 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1254 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1255 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1256 return PL_laststatval;
1266 if (PL_op->op_flags & OPf_REF) {
1268 if (cGVOP_gv == PL_defgv) {
1269 if (PL_laststype != OP_LSTAT)
1270 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1271 return PL_laststatval;
1273 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1276 PL_laststype = OP_LSTAT;
1280 sv_setpv(PL_statname,SvPV(sv, n_a));
1281 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1282 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1283 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1284 return PL_laststatval;
1288 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1290 return do_aexec5(really, mark, sp, 0, 0);
1294 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1295 int fd, int do_report)
1297 #ifdef MACOS_TRADITIONAL
1298 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1301 char *tmps = Nullch;
1305 New(401,PL_Argv, sp - mark + 1, char*);
1307 while (++mark <= sp) {
1309 *a++ = SvPVx(*mark, n_a);
1315 tmps = SvPV(really, n_a);
1316 if ((!really && *PL_Argv[0] != '/') ||
1317 (really && *tmps != '/')) /* will execvp use PATH? */
1318 TAINT_ENV(); /* testing IFS here is overkill, probably */
1319 if (really && *tmps)
1320 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1322 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1323 if (ckWARN(WARN_EXEC))
1324 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1325 (really ? tmps : PL_Argv[0]), Strerror(errno));
1329 PerlLIO_write(fd, (void*)&e, sizeof(int));
1339 Perl_do_execfree(pTHX)
1343 PL_Argv = Null(char **);
1351 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1354 Perl_do_exec(pTHX_ char *cmd)
1356 return do_exec3(cmd,0,0);
1360 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1365 while (*cmd && isSPACE(*cmd))
1368 /* save an extra exec if possible */
1373 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1374 strnEQ(cmd+PL_cshlen," -c",3)) {
1376 s = cmd+PL_cshlen+3;
1390 if (s[-1] == '\'') {
1392 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1401 /* see if there are shell metacharacters in it */
1403 if (*cmd == '.' && isSPACE(cmd[1]))
1406 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1409 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1413 for (s = cmd; *s; s++) {
1414 if (*s != ' ' && !isALPHA(*s) &&
1415 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1416 if (*s == '\n' && !s[1]) {
1420 /* handle the 2>&1 construct at the end */
1421 if (*s == '>' && s[1] == '&' && s[2] == '1'
1422 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1423 && (!s[3] || isSPACE(s[3])))
1427 while (*t && isSPACE(*t))
1429 if (!*t && (dup2(1,2) != -1)) {
1435 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1440 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1441 PL_Cmd = savepvn(cmd, s-cmd);
1443 for (s = PL_Cmd; *s;) {
1444 while (*s && isSPACE(*s)) s++;
1447 while (*s && !isSPACE(*s)) s++;
1453 PerlProc_execvp(PL_Argv[0],PL_Argv);
1454 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1461 if (ckWARN(WARN_EXEC))
1462 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1463 PL_Argv[0], Strerror(errno));
1465 PerlLIO_write(fd, (void*)&e, sizeof(int));
1474 #endif /* OS2 || WIN32 */
1477 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1481 register I32 tot = 0;
1484 SV **oldmark = mark;
1487 #define APPLY_TAINT_PROPER() \
1489 if (PL_tainted) { TAINT_PROPER(what); } \
1492 /* This is a first heuristic; it doesn't catch tainting magic. */
1494 while (++mark <= sp) {
1495 if (SvTAINTED(*mark)) {
1505 APPLY_TAINT_PROPER();
1508 APPLY_TAINT_PROPER();
1510 while (++mark <= sp) {
1511 char *name = SvPVx(*mark, n_a);
1512 APPLY_TAINT_PROPER();
1513 if (PerlLIO_chmod(name, val))
1521 APPLY_TAINT_PROPER();
1522 if (sp - mark > 2) {
1523 val = SvIVx(*++mark);
1524 val2 = SvIVx(*++mark);
1525 APPLY_TAINT_PROPER();
1527 while (++mark <= sp) {
1528 char *name = SvPVx(*mark, n_a);
1529 APPLY_TAINT_PROPER();
1530 if (PerlLIO_chown(name, val, val2))
1537 XXX Should we make lchown() directly available from perl?
1538 For now, we'll let Configure test for HAS_LCHOWN, but do
1539 nothing in the core.
1545 APPLY_TAINT_PROPER();
1548 s = SvPVx(*++mark, n_a);
1550 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1552 if (!(val = whichsig(s)))
1553 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1557 APPLY_TAINT_PROPER();
1560 /* kill() doesn't do process groups (job trees?) under VMS */
1561 if (val < 0) val = -val;
1562 if (val == SIGKILL) {
1563 # include <starlet.h>
1564 /* Use native sys$delprc() to insure that target process is
1565 * deleted; supervisor-mode images don't pay attention to
1566 * CRTL's emulation of Unix-style signals and kill()
1568 while (++mark <= sp) {
1569 I32 proc = SvIVx(*mark);
1570 register unsigned long int __vmssts;
1571 APPLY_TAINT_PROPER();
1572 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1576 case SS$_NOSUCHNODE:
1577 SETERRNO(ESRCH,__vmssts);
1580 SETERRNO(EPERM,__vmssts);
1583 SETERRNO(EVMSERR,__vmssts);
1592 while (++mark <= sp) {
1593 I32 proc = SvIVx(*mark);
1594 APPLY_TAINT_PROPER();
1596 if (PerlProc_killpg(proc,val)) /* BSD */
1598 if (PerlProc_kill(-proc,val)) /* SYSV */
1604 while (++mark <= sp) {
1605 I32 proc = SvIVx(*mark);
1606 APPLY_TAINT_PROPER();
1607 if (PerlProc_kill(proc, val))
1615 APPLY_TAINT_PROPER();
1617 while (++mark <= sp) {
1618 s = SvPVx(*mark, n_a);
1619 APPLY_TAINT_PROPER();
1620 if (PL_euid || PL_unsafe) {
1624 else { /* don't let root wipe out directories without -U */
1625 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1637 APPLY_TAINT_PROPER();
1638 if (sp - mark > 2) {
1639 #if defined(I_UTIME) || defined(VMS)
1640 struct utimbuf utbuf;
1648 SV* accessed = *++mark;
1649 SV* modified = *++mark;
1650 void * utbufp = &utbuf;
1652 /* be like C, and if both times are undefined, let the C
1653 library figure out what to do. This usually means
1656 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1659 Zero(&utbuf, sizeof utbuf, char);
1661 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1662 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1664 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1665 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1667 APPLY_TAINT_PROPER();
1669 while (++mark <= sp) {
1670 char *name = SvPVx(*mark, n_a);
1671 APPLY_TAINT_PROPER();
1672 if (PerlLIO_utime(name, utbufp))
1683 #undef APPLY_TAINT_PROPER
1686 /* Do the permissions allow some operation? Assumes statcache already set. */
1687 #ifndef VMS /* VMS' cando is in vms.c */
1689 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1690 /* Note: we use `effective' both for uids and gids.
1691 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1694 /* [Comments and code from Len Reed]
1695 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1696 * to write-protected files. The execute permission bit is set
1697 * by the Miscrosoft C library stat() function for the following:
1702 * All files and directories are readable.
1703 * Directories and special files, e.g. "CON", cannot be
1705 * [Comment by Tom Dinger -- a directory can have the write-protect
1706 * bit set in the file system, but DOS permits changes to
1707 * the directory anyway. In addition, all bets are off
1708 * here for networked software, such as Novell and
1712 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1713 * too so it will actually look into the files for magic numbers
1715 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1717 #else /* ! DOSISH */
1718 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1719 if (mode == S_IXUSR) {
1720 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1724 return TRUE; /* root reads and writes anything */
1727 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1728 if (statbufp->st_mode & mode)
1729 return TRUE; /* ok as "user" */
1731 else if (ingroup(statbufp->st_gid,effective)) {
1732 if (statbufp->st_mode & mode >> 3)
1733 return TRUE; /* ok as "group" */
1735 else if (statbufp->st_mode & mode >> 6)
1736 return TRUE; /* ok as "other" */
1738 #endif /* ! DOSISH */
1743 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1745 #ifdef MACOS_TRADITIONAL
1746 /* This is simply not correct for AppleShare, but fix it yerself. */
1749 if (testgid == (effective ? PL_egid : PL_gid))
1751 #ifdef HAS_GETGROUPS
1756 Groups_t gary[NGROUPS];
1759 anum = getgroups(NGROUPS,gary);
1761 if (gary[anum] == testgid)
1769 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1772 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1777 key = (key_t)SvNVx(*++mark);
1778 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1779 flags = SvIVx(*++mark);
1785 return msgget(key, flags);
1789 return semget(key, n, flags);
1793 return shmget(key, n, flags);
1795 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1797 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1800 return -1; /* should never happen */
1804 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1808 I32 id, n, cmd, infosize, getinfo;
1811 id = SvIVx(*++mark);
1812 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1813 cmd = SvIVx(*++mark);
1816 getinfo = (cmd == IPC_STAT);
1822 if (cmd == IPC_STAT || cmd == IPC_SET)
1823 infosize = sizeof(struct msqid_ds);
1828 if (cmd == IPC_STAT || cmd == IPC_SET)
1829 infosize = sizeof(struct shmid_ds);
1835 if (cmd == IPC_STAT || cmd == IPC_SET)
1836 infosize = sizeof(struct semid_ds);
1837 else if (cmd == GETALL || cmd == SETALL)
1839 struct semid_ds semds;
1841 #ifdef EXTRA_F_IN_SEMUN_BUF
1842 semun.buff = &semds;
1846 getinfo = (cmd == GETALL);
1847 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1849 infosize = semds.sem_nsems * sizeof(short);
1850 /* "short" is technically wrong but much more portable
1851 than guessing about u_?short(_t)? */
1854 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1858 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1860 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1869 SvPV_force(astr, len);
1870 a = SvGROW(astr, infosize+1);
1874 a = SvPV(astr, len);
1875 if (len != infosize)
1876 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1885 a = INT2PTR(char *,i); /* ouch */
1892 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1898 union semun unsemds;
1900 #ifdef EXTRA_F_IN_SEMUN_BUF
1901 unsemds.buff = (struct semid_ds *)a;
1903 unsemds.buf = (struct semid_ds *)a;
1905 ret = Semctl(id, n, cmd, unsemds);
1907 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1914 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1918 if (getinfo && ret >= 0) {
1919 SvCUR_set(astr, infosize);
1920 *SvEND(astr) = '\0';
1927 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1932 I32 id, msize, flags;
1935 id = SvIVx(*++mark);
1937 flags = SvIVx(*++mark);
1938 mbuf = SvPV(mstr, len);
1939 if ((msize = len - sizeof(long)) < 0)
1940 Perl_croak(aTHX_ "Arg too short for msgsnd");
1942 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1944 Perl_croak(aTHX_ "msgsnd not implemented");
1949 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1955 I32 id, msize, flags, ret;
1958 id = SvIVx(*++mark);
1960 /* suppress warning when reading into undef var --jhi */
1962 sv_setpvn(mstr, "", 0);
1963 msize = SvIVx(*++mark);
1964 mtype = (long)SvIVx(*++mark);
1965 flags = SvIVx(*++mark);
1966 SvPV_force(mstr, len);
1967 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1970 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1972 SvCUR_set(mstr, sizeof(long)+ret);
1973 *SvEND(mstr) = '\0';
1974 #ifndef INCOMPLETE_TAINTS
1975 /* who knows who has been playing with this message? */
1981 Perl_croak(aTHX_ "msgrcv not implemented");
1986 Perl_do_semop(pTHX_ SV **mark, SV **sp)
1994 id = SvIVx(*++mark);
1996 opbuf = SvPV(opstr, opsize);
1997 if (opsize < 3 * SHORTSIZE
1998 || (opsize % (3 * SHORTSIZE))) {
1999 SETERRNO(EINVAL,LIB$_INVARG);
2003 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2005 int nsops = opsize / (3 * sizeof (short));
2007 short *ops = (short *) opbuf;
2009 struct sembuf *temps, *t;
2012 New (0, temps, nsops, struct sembuf);
2020 result = semop(id, temps, nsops);
2034 Perl_croak(aTHX_ "semop not implemented");
2039 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2044 I32 id, mpos, msize;
2046 struct shmid_ds shmds;
2048 id = SvIVx(*++mark);
2050 mpos = SvIVx(*++mark);
2051 msize = SvIVx(*++mark);
2053 if (shmctl(id, IPC_STAT, &shmds) == -1)
2055 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2056 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2059 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2060 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2062 if (optype == OP_SHMREAD) {
2063 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2065 sv_setpvn(mstr, "", 0);
2066 SvPV_force(mstr, len);
2067 mbuf = SvGROW(mstr, msize+1);
2069 Copy(shm + mpos, mbuf, msize, char);
2070 SvCUR_set(mstr, msize);
2071 *SvEND(mstr) = '\0';
2073 #ifndef INCOMPLETE_TAINTS
2074 /* who knows who has been playing with this shared memory? */
2081 mbuf = SvPV(mstr, len);
2082 if ((n = len) > msize)
2084 Copy(mbuf, shm + mpos, n, char);
2086 memzero(shm + mpos + n, msize - n);
2090 Perl_croak(aTHX_ "shm I/O not implemented");
2094 #endif /* SYSV IPC */
2097 =for apidoc start_glob
2099 Function called by C<do_readline> to spawn a glob (or do the glob inside
2100 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2101 this glob starter is only used by miniperl during the build proccess.
2102 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2108 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2110 SV *tmpcmd = NEWSV(55, 0);
2114 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2115 /* since spawning off a process is a real performance hit */
2117 #include <descrip.h>
2118 #include <lib$routines.h>
2121 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2122 char vmsspec[NAM$C_MAXRSS+1];
2123 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2124 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2127 struct dsc$descriptor_s wilddsc
2128 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2129 struct dsc$descriptor_vs rsdsc
2130 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2131 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2133 /* We could find out if there's an explicit dev/dir or version
2134 by peeking into lib$find_file's internal context at
2135 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2136 but that's unsupported, so I don't want to do it now and
2137 have it bite someone in the future. */
2138 cp = SvPV(tmpglob,i);
2140 if (cp[i] == ';') hasver = 1;
2142 if (sts) hasver = 1;
2146 hasdir = isunix = 1;
2149 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2154 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2156 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2157 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2158 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2159 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2160 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2161 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
2162 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2163 &dfltdsc,NULL,NULL,NULL))&1)) {
2164 end = rstr + (unsigned long int) *rslt;
2165 if (!hasver) while (*end != ';') end--;
2166 *(end++) = '\n'; *end = '\0';
2167 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2169 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2174 while (*(--begin) != ']' && *begin != '>') ;
2177 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2179 if (cxt) (void)lib$find_file_end(&cxt);
2180 if (ok && sts != RMS$_NMF &&
2181 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
2184 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2186 PerlIO_close(tmpfp);
2190 PerlIO_rewind(tmpfp);
2191 IoTYPE(io) = IoTYPE_RDONLY;
2192 IoIFP(io) = fp = tmpfp;
2193 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2198 #ifdef MACOS_TRADITIONAL
2199 sv_setpv(tmpcmd, "glob ");
2200 sv_catsv(tmpcmd, tmpglob);
2201 sv_catpv(tmpcmd, " |");
2205 sv_setpv(tmpcmd, "for a in ");
2206 sv_catsv(tmpcmd, tmpglob);
2207 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2210 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2211 sv_catsv(tmpcmd, tmpglob);
2213 sv_setpv(tmpcmd, "perlglob ");
2214 sv_catsv(tmpcmd, tmpglob);
2215 sv_catpv(tmpcmd, " |");
2220 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2221 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2222 sv_catsv(tmpcmd, tmpglob);
2223 sv_catpv(tmpcmd, "' 2>/dev/null |");
2225 sv_setpv(tmpcmd, "echo ");
2226 sv_catsv(tmpcmd, tmpglob);
2228 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2230 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2233 #endif /* !DOSISH */
2234 #endif /* MACOS_TRADITIONAL */
2235 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2236 FALSE, O_RDONLY, 0, Nullfp);