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;
79 char savetype = IoTYPE_CLOSED;
84 bool was_fdopen = FALSE;
85 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
87 char mode[4]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
88 SV *svs = (num_svs) ? *svp : Nullsv;
90 Zero(mode,sizeof(mode),char);
91 PL_forkprocess = 1; /* assume true if no fork */
93 /* Collect default raw/crlf info from the op */
94 if (PL_op && PL_op->op_type == OP_OPEN) {
95 /* set up disciplines */
96 U8 flags = PL_op->op_private;
97 in_raw = (flags & OPpOPEN_IN_RAW);
98 in_crlf = (flags & OPpOPEN_IN_CRLF);
99 out_raw = (flags & OPpOPEN_OUT_RAW);
100 out_crlf = (flags & OPpOPEN_OUT_CRLF);
103 /* If currently open - close before we re-open */
105 fd = PerlIO_fileno(IoIFP(io));
106 if (IoTYPE(io) == IoTYPE_STD)
108 else if (fd <= PL_maxsysfd) {
111 savetype = IoTYPE(io);
114 else if (IoTYPE(io) == IoTYPE_PIPE)
115 result = PerlProc_pclose(IoIFP(io));
116 else if (IoIFP(io) != IoOFP(io)) {
118 result = PerlIO_close(IoOFP(io));
119 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
122 result = PerlIO_close(IoIFP(io));
125 result = PerlIO_close(IoIFP(io));
126 if (result == EOF && fd > PL_maxsysfd)
127 PerlIO_printf(Perl_error_log,
128 "Warning: unable to close filehandle %s properly.\n",
130 IoOFP(io) = IoIFP(io) = Nullfp;
134 /* sysopen style args, i.e. integer mode and permissions */
136 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
137 rawmode |= O_LARGEFILE;
141 #define O_ACCMODE 3 /* Assume traditional implementation */
144 switch (result = rawmode & O_ACCMODE) {
146 IoTYPE(io) = IoTYPE_RDONLY;
149 IoTYPE(io) = IoTYPE_WRONLY;
153 IoTYPE(io) = IoTYPE_RDWR;
157 writing = (result > 0);
158 fd = PerlLIO_open3(name, rawmode, rawperm);
164 if (result == O_RDONLY) {
168 else if (rawmode & O_APPEND) {
170 if (result != O_WRONLY)
175 if (result == O_WRONLY)
182 if (rawmode & O_BINARY)
185 fp = PerlIO_fdopen(fd, mode);
191 /* Regular (non-sys) open */
197 type = savepvn(name, len);
200 /* Loose trailing white space */
201 while (tend > type && isSPACE(tend[-1]))
204 /* New style explict name, type is just mode and discipline/layer info */
206 name = SvPV(svs, l) ;
208 name = savepvn(name, len);
211 for (; isSPACE(*type); type++) ;
218 if ((*type == IoTYPE_RDWR) && ((!num_svs || tend > type+1 && tend[-1] != IoTYPE_PIPE))) { /* scary */
223 if (*type == IoTYPE_PIPE) {
225 if (type[1] != IoTYPE_STD) {
227 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
232 for (type++; isSPACE(*type); type++) ;
237 if (*name == '\0') { /* command is missing 19990114 */
238 if (ckWARN(WARN_PIPE))
239 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
243 if (strNE(name,"-") || num_svs)
245 TAINT_PROPER("piped open");
246 if (!num_svs && name[len-1] == '|') {
248 if (ckWARN(WARN_PIPE))
249 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
257 fp = PerlProc_popen(name,mode);
259 else if (*type == IoTYPE_WRONLY) {
260 TAINT_PROPER("open");
262 if (*type == IoTYPE_WRONLY) {
263 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
264 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
287 if (!*name && supplied_fp)
291 for (; isSPACE(*name); name++) ;
296 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
300 SETERRNO(EINVAL,SS$_IVCHAN);
305 PerlIO *fp = IoIFP(thatio);
306 /* Flush stdio buffer before dup. --mjd
307 * Unfortunately SEEK_CURing 0 seems to
308 * be optimized away on most platforms;
309 * only Solaris and Linux seem to flush
312 /* sfio fails to clear error on next
313 sfwrite, contrary to documentation.
315 if (PerlIO_seek(fp, 0, SEEK_CUR) == -1)
318 /* On the other hand, do all platforms
319 * take gracefully to flushing a read-only
320 * filehandle? Perhaps we should do
321 * fsetpos(src)+fgetpos(dst)? --nik */
323 fd = PerlIO_fileno(fp);
324 /* When dup()ing STDIN, STDOUT or STDERR
325 * explicitly set appropriate access mode */
326 if (IoIFP(thatio) == PerlIO_stdout()
327 || IoIFP(thatio) == PerlIO_stderr())
328 IoTYPE(io) = IoTYPE_WRONLY;
329 else if (IoIFP(thatio) == PerlIO_stdin())
330 IoTYPE(io) = IoTYPE_RDONLY;
331 /* When dup()ing a socket, say result is
333 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
334 IoTYPE(io) = IoTYPE_SOCKET;
340 fd = PerlLIO_dup(fd);
343 if (!(fp = PerlIO_fdopen(fd,mode))) {
351 for (; isSPACE(*type); type++) ;
352 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
355 fp = PerlIO_stdout();
356 IoTYPE(io) = IoTYPE_STD;
359 fp = PerlIO_open((num_svs ? name : type), mode);
363 else if (*type == IoTYPE_RDONLY) {
365 for (type++; isSPACE(*type); type++) ;
376 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
380 IoTYPE(io) = IoTYPE_STD;
383 fp = PerlIO_open((num_svs ? name : type), mode);
385 else if ((num_svs && type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
386 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
388 type += 2; /* skip over '-|' */
392 while (tend > type && isSPACE(tend[-1]))
395 for (; isSPACE(*type); type++) ;
399 if (*name == '\0') { /* command is missing 19990114 */
400 if (ckWARN(WARN_PIPE))
401 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
405 if (strNE(name,"-") || num_svs)
407 TAINT_PROPER("piped open");
413 fp = PerlProc_popen(name,mode);
414 IoTYPE(io) = IoTYPE_PIPE;
420 IoTYPE(io) = IoTYPE_RDONLY;
422 for (; isSPACE(*name); name++) ;
428 if (strEQ(name,"-")) {
430 IoTYPE(io) = IoTYPE_STD;
433 fp = PerlIO_open(name,mode);
438 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
439 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
442 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD) {
443 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
444 (void)PerlIO_close(fp);
447 if (S_ISSOCK(PL_statbuf.st_mode))
448 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
452 !(PL_statbuf.st_mode & S_IFMT)
456 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
457 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
458 ) { /* on OS's that return 0 on fstat()ed pipe */
460 Sock_size_t buflen = sizeof tmpbuf;
461 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
463 || errno != ENOTSOCK)
464 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
465 /* but some return 0 for streams too, sigh */
469 if (saveifp) { /* must use old fp? */
470 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
471 then dup the new fileno down
473 fd = PerlIO_fileno(saveifp);
475 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
476 if (saveofp != saveifp) { /* was a socket? */
477 PerlIO_close(saveofp);
478 /* This looks very suspect - NI-S 24 Nov 2000 */
480 Safefree(saveofp); /* ??? */
483 if (fd != PerlIO_fileno(fp)) {
487 PerlLIO_dup2(PerlIO_fileno(fp), fd);
489 if (fd != PerlIO_fileno(PerlIO_stdin())) {
490 char newname[FILENAME_MAX+1];
491 if (fgetname(fp, newname)) {
492 if (fd == PerlIO_fileno(PerlIO_stdout())) Perl_vmssetuserlnm("SYS$OUTPUT", newname);
493 if (fd == PerlIO_fileno(PerlIO_stderr())) Perl_vmssetuserlnm("SYS$ERROR", newname);
498 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
499 (void)SvUPGRADE(sv, SVt_IV);
502 sv = *av_fetch(PL_fdpid,fd,TRUE);
504 (void)SvUPGRADE(sv, SVt_IV);
513 #if defined(HAS_FCNTL) && defined(F_SETFD)
515 int save_errno = errno;
516 fd = PerlIO_fileno(fp);
517 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
523 /* Need to supply default type info from open.pm */
524 SV *layers = PL_curcop->cop_io;
528 type = SvPV(layers,len);
529 if (type && mode[0] != 'r') {
530 /* Skip to write part */
531 char *s = strchr(type,0);
532 if (s && (s-type) < len) {
539 while (isSPACE(*type)) type++;
542 if (PerlIO_apply_layers(aTHX_ IoIFP(io),mode,type) != 0) {
548 IoFLAGS(io) &= ~IOf_NOLINE;
550 if (IoTYPE(io) == IoTYPE_SOCKET
551 || (IoTYPE(io) == IoTYPE_WRONLY && S_ISCHR(PL_statbuf.st_mode)) )
554 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),mode))) {
560 if (PerlIO_apply_layers(aTHX_ IoOFP(io),mode,type) != 0) {
561 PerlIO_close(IoOFP(io));
577 IoTYPE(io) = savetype;
582 Perl_nextargv(pTHX_ register GV *gv)
585 #ifndef FLEXFILENAMES
594 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
595 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
596 IoFLAGS(io) &= ~IOf_START;
598 if (!PL_argvout_stack)
599 PL_argvout_stack = newAV();
600 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
603 if (PL_filemode & (S_ISUID|S_ISGID)) {
604 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
606 (void)fchmod(PL_lastfd,PL_filemode);
608 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
612 while (av_len(GvAV(gv)) >= 0) {
614 sv = av_shift(GvAV(gv));
616 sv_setsv(GvSV(gv),sv);
617 SvSETMAGIC(GvSV(gv));
618 PL_oldname = SvPVx(GvSV(gv), oldlen);
619 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
621 TAINT_PROPER("inplace open");
622 if (oldlen == 1 && *PL_oldname == '-') {
623 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
624 return IoIFP(GvIOp(gv));
626 #ifndef FLEXFILENAMES
627 filedev = PL_statbuf.st_dev;
628 fileino = PL_statbuf.st_ino;
630 PL_filemode = PL_statbuf.st_mode;
631 fileuid = PL_statbuf.st_uid;
632 filegid = PL_statbuf.st_gid;
633 if (!S_ISREG(PL_filemode)) {
634 if (ckWARN_d(WARN_INPLACE))
635 Perl_warner(aTHX_ WARN_INPLACE,
636 "Can't do inplace edit: %s is not a regular file",
642 char *star = strchr(PL_inplace, '*');
644 char *begin = PL_inplace;
645 sv_setpvn(sv, "", 0);
647 sv_catpvn(sv, begin, star - begin);
648 sv_catpvn(sv, PL_oldname, oldlen);
650 } while ((star = strchr(begin, '*')));
655 sv_catpv(sv,PL_inplace);
657 #ifndef FLEXFILENAMES
658 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
659 && PL_statbuf.st_dev == filedev
660 && PL_statbuf.st_ino == fileino
662 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
666 if (ckWARN_d(WARN_INPLACE))
667 Perl_warner(aTHX_ WARN_INPLACE,
668 "Can't do inplace edit: %s would not be unique",
675 #if !defined(DOSISH) && !defined(__CYGWIN__)
676 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
677 if (ckWARN_d(WARN_INPLACE))
678 Perl_warner(aTHX_ WARN_INPLACE,
679 "Can't rename %s to %s: %s, skipping file",
680 PL_oldname, SvPVX(sv), Strerror(errno) );
686 (void)PerlLIO_unlink(SvPVX(sv));
687 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
688 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
691 (void)UNLINK(SvPVX(sv));
692 if (link(PL_oldname,SvPVX(sv)) < 0) {
693 if (ckWARN_d(WARN_INPLACE))
694 Perl_warner(aTHX_ WARN_INPLACE,
695 "Can't rename %s to %s: %s, skipping file",
696 PL_oldname, SvPVX(sv), Strerror(errno) );
700 (void)UNLINK(PL_oldname);
704 #if !defined(DOSISH) && !defined(AMIGAOS)
705 # ifndef VMS /* Don't delete; use automatic file versioning */
706 if (UNLINK(PL_oldname) < 0) {
707 if (ckWARN_d(WARN_INPLACE))
708 Perl_warner(aTHX_ WARN_INPLACE,
709 "Can't remove %s: %s, skipping file",
710 PL_oldname, Strerror(errno) );
716 Perl_croak(aTHX_ "Can't do inplace edit without backup");
720 sv_setpvn(sv,">",!PL_inplace);
721 sv_catpvn(sv,PL_oldname,oldlen);
722 SETERRNO(0,0); /* in case sprintf set errno */
724 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
725 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
727 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
728 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
731 if (ckWARN_d(WARN_INPLACE))
732 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
733 PL_oldname, Strerror(errno) );
737 setdefout(PL_argvoutgv);
738 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
739 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
741 (void)fchmod(PL_lastfd,PL_filemode);
743 # if !(defined(WIN32) && defined(__BORLANDC__))
744 /* Borland runtime creates a readonly file! */
745 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
748 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
750 (void)fchown(PL_lastfd,fileuid,filegid);
753 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
758 return IoIFP(GvIOp(gv));
761 if (ckWARN_d(WARN_INPLACE)) {
763 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
764 && !S_ISREG(PL_statbuf.st_mode))
766 Perl_warner(aTHX_ WARN_INPLACE,
767 "Can't do inplace edit: %s is not a regular file",
771 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
772 PL_oldname, Strerror(eno));
776 if (io && (IoFLAGS(io) & IOf_ARGV))
777 IoFLAGS(io) |= IOf_START;
779 (void)do_close(PL_argvoutgv,FALSE);
780 if (io && (IoFLAGS(io) & IOf_ARGV)
781 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
783 GV *oldout = (GV*)av_pop(PL_argvout_stack);
785 SvREFCNT_dec(oldout);
788 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
795 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
814 if (PerlProc_pipe(fd) < 0)
816 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
817 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
818 IoIFP(wstio) = IoOFP(wstio);
819 IoTYPE(rstio) = IoTYPE_RDONLY;
820 IoTYPE(wstio) = IoTYPE_WRONLY;
821 if (!IoIFP(rstio) || !IoOFP(wstio)) {
822 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
823 else PerlLIO_close(fd[0]);
824 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
825 else PerlLIO_close(fd[1]);
829 sv_setsv(sv,&PL_sv_yes);
833 sv_setsv(sv,&PL_sv_undef);
838 /* explicit renamed to avoid C++ conflict -- kja */
840 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
847 if (!gv || SvTYPE(gv) != SVt_PVGV) {
849 SETERRNO(EBADF,SS$_IVCHAN);
853 if (!io) { /* never opened */
855 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
856 report_evil_fh(gv, io, PL_op->op_type);
857 SETERRNO(EBADF,SS$_IVCHAN);
861 retval = io_close(io, not_implicit);
865 IoLINES_LEFT(io) = IoPAGE_LEN(io);
867 IoTYPE(io) = IoTYPE_CLOSED;
872 Perl_io_close(pTHX_ IO *io, bool not_implicit)
878 if (IoTYPE(io) == IoTYPE_PIPE) {
879 status = PerlProc_pclose(IoIFP(io));
881 STATUS_NATIVE_SET(status);
882 retval = (STATUS_POSIX == 0);
885 retval = (status != -1);
888 else if (IoTYPE(io) == IoTYPE_STD)
891 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
892 retval = (PerlIO_close(IoOFP(io)) != EOF);
893 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
896 retval = (PerlIO_close(IoIFP(io)) != EOF);
898 IoOFP(io) = IoIFP(io) = Nullfp;
900 else if (not_implicit) {
901 SETERRNO(EBADF,SS$_IVCHAN);
908 Perl_do_eof(pTHX_ GV *gv)
917 else if (ckWARN(WARN_IO)
918 && (IoTYPE(io) == IoTYPE_WRONLY || IoIFP(io) == PerlIO_stdout()
919 || IoIFP(io) == PerlIO_stderr()))
921 /* integrate to report_evil_fh()? */
924 SV* sv = sv_newmortal();
925 gv_efullname4(sv, gv, Nullch, FALSE);
926 name = SvPV_nolen(sv);
929 Perl_warner(aTHX_ WARN_IO,
930 "Filehandle %s opened only for output", name);
932 Perl_warner(aTHX_ WARN_IO,
933 "Filehandle opened only for output");
938 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
939 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
940 return FALSE; /* this is the most usual case */
943 ch = PerlIO_getc(IoIFP(io));
945 (void)PerlIO_ungetc(IoIFP(io),ch);
949 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
950 if (PerlIO_get_cnt(IoIFP(io)) < -1)
951 PerlIO_set_cnt(IoIFP(io),-1);
953 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
954 if (!nextargv(PL_argvgv)) /* get another fp handy */
958 return TRUE; /* normal fp, definitely end of file */
964 Perl_do_tell(pTHX_ GV *gv)
969 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
970 #ifdef ULTRIX_STDIO_BOTCH
972 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
974 return PerlIO_tell(fp);
976 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
977 report_evil_fh(gv, io, PL_op->op_type);
978 SETERRNO(EBADF,RMS$_IFI);
983 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
988 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
989 #ifdef ULTRIX_STDIO_BOTCH
991 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
993 return PerlIO_seek(fp, pos, whence) >= 0;
995 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
996 report_evil_fh(gv, io, PL_op->op_type);
997 SETERRNO(EBADF,RMS$_IFI);
1002 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1005 register PerlIO *fp;
1007 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1008 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1009 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1010 report_evil_fh(gv, io, PL_op->op_type);
1011 SETERRNO(EBADF,RMS$_IFI);
1016 Perl_mode_from_discipline(pTHX_ SV *discp)
1018 int mode = O_BINARY;
1021 char *s = SvPV(discp,len);
1026 if (len > 3 && strnEQ(s+1, "raw", 3)
1027 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1036 if (len > 4 && strnEQ(s+1, "crlf", 4)
1037 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1046 goto fail_discipline;
1049 else if (isSPACE(*s)) {
1056 end = strchr(s+1, ':');
1059 #ifndef PERLIO_LAYERS
1060 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1071 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1073 /* The old body of this is now in non-LAYER part of perlio.c
1074 * This is a stub for any XS code which might have been calling it.
1076 char *name = (O_BINARY != O_TEXT && !(mode & O_BINARY)) ? ":crlf" : ":raw";
1077 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1080 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1081 /* code courtesy of William Kucharski */
1084 I32 my_chsize(fd, length)
1085 I32 fd; /* file descriptor */
1086 Off_t length; /* length to set file to */
1089 struct stat filebuf;
1091 if (PerlLIO_fstat(fd, &filebuf) < 0)
1094 if (filebuf.st_size < length) {
1096 /* extend file length */
1098 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1101 /* write a "0" byte */
1103 if ((PerlLIO_write(fd, "", 1)) != 1)
1107 /* truncate length */
1111 fl.l_start = length;
1112 fl.l_type = F_WRLCK; /* write lock on file space */
1115 * This relies on the UNDOCUMENTED F_FREESP argument to
1116 * fcntl(2), which truncates the file so that it ends at the
1117 * position indicated by fl.l_start.
1119 * Will minor miracles never cease?
1122 if (fcntl(fd, F_FREESP, &fl) < 0)
1129 #endif /* F_FREESP */
1132 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1134 register char *tmps;
1137 /* assuming fp is checked earlier */
1143 if (SvIOK(sv) && SvIVX(sv) != 0) {
1144 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1145 return !PerlIO_error(fp);
1147 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1148 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1149 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1150 return !PerlIO_error(fp);
1153 switch (SvTYPE(sv)) {
1155 if (ckWARN(WARN_UNINITIALIZED))
1163 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1165 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1166 return !PerlIO_error(fp);
1170 if (PerlIO_isutf8(fp)) {
1172 sv_utf8_upgrade(sv = sv_mortalcopy(sv));
1174 else if (DO_UTF8(sv))
1175 sv_utf8_downgrade((sv = sv_mortalcopy(sv)), FALSE);
1176 tmps = SvPV(sv, len);
1179 /* To detect whether the process is about to overstep its
1180 * filesize limit we would need getrlimit(). We could then
1181 * also transparently raise the limit with setrlimit() --
1182 * but only until the system hard limit/the filesystem limit,
1183 * at which we would get EPERM. Note that when using buffered
1184 * io the write failure can be delayed until the flush/close. --jhi */
1185 if (len && (PerlIO_write(fp,tmps,len) == 0))
1187 return !PerlIO_error(fp);
1197 if (PL_op->op_flags & OPf_REF) {
1202 if (io && IoIFP(io)) {
1204 sv_setpv(PL_statname,"");
1205 PL_laststype = OP_STAT;
1206 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1210 return PL_laststatval;
1211 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1212 report_evil_fh(gv, io, PL_op->op_type);
1214 sv_setpv(PL_statname,"");
1215 return (PL_laststatval = -1);
1223 if (SvTYPE(sv) == SVt_PVGV) {
1227 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1234 sv_setpv(PL_statname, s);
1235 PL_laststype = OP_STAT;
1236 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1237 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1238 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1239 return PL_laststatval;
1249 if (PL_op->op_flags & OPf_REF) {
1251 if (cGVOP_gv == PL_defgv) {
1252 if (PL_laststype != OP_LSTAT)
1253 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1254 return PL_laststatval;
1256 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1259 PL_laststype = OP_LSTAT;
1263 sv_setpv(PL_statname,SvPV(sv, n_a));
1264 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1265 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1266 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1267 return PL_laststatval;
1271 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1273 return do_aexec5(really, mark, sp, 0, 0);
1277 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1278 int fd, int do_report)
1280 #ifdef MACOS_TRADITIONAL
1281 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1288 New(401,PL_Argv, sp - mark + 1, char*);
1290 while (++mark <= sp) {
1292 *a++ = SvPVx(*mark, n_a);
1298 tmps = SvPV(really, n_a);
1299 if ((!really && *PL_Argv[0] != '/') ||
1300 (really && *tmps != '/')) /* will execvp use PATH? */
1301 TAINT_ENV(); /* testing IFS here is overkill, probably */
1302 if (really && *tmps)
1303 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1305 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1306 if (ckWARN(WARN_EXEC))
1307 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1308 (really ? tmps : PL_Argv[0]), Strerror(errno));
1312 PerlLIO_write(fd, (void*)&e, sizeof(int));
1322 Perl_do_execfree(pTHX)
1326 PL_Argv = Null(char **);
1334 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1337 Perl_do_exec(pTHX_ char *cmd)
1339 return do_exec3(cmd,0,0);
1343 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1349 while (*cmd && isSPACE(*cmd))
1352 /* save an extra exec if possible */
1355 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1357 s = cmd+PL_cshlen+3;
1371 if (s[-1] == '\'') {
1373 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1381 /* see if there are shell metacharacters in it */
1383 if (*cmd == '.' && isSPACE(cmd[1]))
1386 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1389 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1393 for (s = cmd; *s; s++) {
1394 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1395 if (*s == '\n' && !s[1]) {
1399 /* handle the 2>&1 construct at the end */
1400 if (*s == '>' && s[1] == '&' && s[2] == '1'
1401 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1402 && (!s[3] || isSPACE(s[3])))
1406 while (*t && isSPACE(*t))
1408 if (!*t && (dup2(1,2) != -1)) {
1414 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1419 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1420 PL_Cmd = savepvn(cmd, s-cmd);
1422 for (s = PL_Cmd; *s;) {
1423 while (*s && isSPACE(*s)) s++;
1426 while (*s && !isSPACE(*s)) s++;
1432 PerlProc_execvp(PL_Argv[0],PL_Argv);
1433 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1440 if (ckWARN(WARN_EXEC))
1441 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1442 PL_Argv[0], Strerror(errno));
1444 PerlLIO_write(fd, (void*)&e, sizeof(int));
1453 #endif /* OS2 || WIN32 */
1456 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1460 register I32 tot = 0;
1463 SV **oldmark = mark;
1466 #define APPLY_TAINT_PROPER() \
1468 if (PL_tainted) { TAINT_PROPER(what); } \
1471 /* This is a first heuristic; it doesn't catch tainting magic. */
1473 while (++mark <= sp) {
1474 if (SvTAINTED(*mark)) {
1484 APPLY_TAINT_PROPER();
1487 APPLY_TAINT_PROPER();
1489 while (++mark <= sp) {
1490 char *name = SvPVx(*mark, n_a);
1491 APPLY_TAINT_PROPER();
1492 if (PerlLIO_chmod(name, val))
1500 APPLY_TAINT_PROPER();
1501 if (sp - mark > 2) {
1502 val = SvIVx(*++mark);
1503 val2 = SvIVx(*++mark);
1504 APPLY_TAINT_PROPER();
1506 while (++mark <= sp) {
1507 char *name = SvPVx(*mark, n_a);
1508 APPLY_TAINT_PROPER();
1509 if (PerlLIO_chown(name, val, val2))
1516 XXX Should we make lchown() directly available from perl?
1517 For now, we'll let Configure test for HAS_LCHOWN, but do
1518 nothing in the core.
1524 APPLY_TAINT_PROPER();
1527 s = SvPVx(*++mark, n_a);
1529 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1531 if (!(val = whichsig(s)))
1532 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1536 APPLY_TAINT_PROPER();
1539 /* kill() doesn't do process groups (job trees?) under VMS */
1540 if (val < 0) val = -val;
1541 if (val == SIGKILL) {
1542 # include <starlet.h>
1543 /* Use native sys$delprc() to insure that target process is
1544 * deleted; supervisor-mode images don't pay attention to
1545 * CRTL's emulation of Unix-style signals and kill()
1547 while (++mark <= sp) {
1548 I32 proc = SvIVx(*mark);
1549 register unsigned long int __vmssts;
1550 APPLY_TAINT_PROPER();
1551 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1555 case SS$_NOSUCHNODE:
1556 SETERRNO(ESRCH,__vmssts);
1559 SETERRNO(EPERM,__vmssts);
1562 SETERRNO(EVMSERR,__vmssts);
1571 while (++mark <= sp) {
1572 I32 proc = SvIVx(*mark);
1573 APPLY_TAINT_PROPER();
1575 if (PerlProc_killpg(proc,val)) /* BSD */
1577 if (PerlProc_kill(-proc,val)) /* SYSV */
1583 while (++mark <= sp) {
1584 I32 proc = SvIVx(*mark);
1585 APPLY_TAINT_PROPER();
1586 if (PerlProc_kill(proc, val))
1594 APPLY_TAINT_PROPER();
1596 while (++mark <= sp) {
1597 s = SvPVx(*mark, n_a);
1598 APPLY_TAINT_PROPER();
1599 if (PL_euid || PL_unsafe) {
1603 else { /* don't let root wipe out directories without -U */
1604 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1616 APPLY_TAINT_PROPER();
1617 if (sp - mark > 2) {
1618 #if defined(I_UTIME) || defined(VMS)
1619 struct utimbuf utbuf;
1627 Zero(&utbuf, sizeof utbuf, char);
1629 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1630 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1632 utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */
1633 utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */
1635 APPLY_TAINT_PROPER();
1637 while (++mark <= sp) {
1638 char *name = SvPVx(*mark, n_a);
1639 APPLY_TAINT_PROPER();
1640 if (PerlLIO_utime(name, &utbuf))
1651 #undef APPLY_TAINT_PROPER
1654 /* Do the permissions allow some operation? Assumes statcache already set. */
1655 #ifndef VMS /* VMS' cando is in vms.c */
1657 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1658 /* Note: we use `effective' both for uids and gids.
1659 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1662 /* [Comments and code from Len Reed]
1663 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1664 * to write-protected files. The execute permission bit is set
1665 * by the Miscrosoft C library stat() function for the following:
1670 * All files and directories are readable.
1671 * Directories and special files, e.g. "CON", cannot be
1673 * [Comment by Tom Dinger -- a directory can have the write-protect
1674 * bit set in the file system, but DOS permits changes to
1675 * the directory anyway. In addition, all bets are off
1676 * here for networked software, such as Novell and
1680 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1681 * too so it will actually look into the files for magic numbers
1683 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1685 #else /* ! DOSISH */
1686 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1687 if (mode == S_IXUSR) {
1688 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1692 return TRUE; /* root reads and writes anything */
1695 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1696 if (statbufp->st_mode & mode)
1697 return TRUE; /* ok as "user" */
1699 else if (ingroup(statbufp->st_gid,effective)) {
1700 if (statbufp->st_mode & mode >> 3)
1701 return TRUE; /* ok as "group" */
1703 else if (statbufp->st_mode & mode >> 6)
1704 return TRUE; /* ok as "other" */
1706 #endif /* ! DOSISH */
1711 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1713 #ifdef MACOS_TRADITIONAL
1714 /* This is simply not correct for AppleShare, but fix it yerself. */
1717 if (testgid == (effective ? PL_egid : PL_gid))
1719 #ifdef HAS_GETGROUPS
1724 Groups_t gary[NGROUPS];
1727 anum = getgroups(NGROUPS,gary);
1729 if (gary[anum] == testgid)
1737 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1740 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1745 key = (key_t)SvNVx(*++mark);
1746 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1747 flags = SvIVx(*++mark);
1753 return msgget(key, flags);
1757 return semget(key, n, flags);
1761 return shmget(key, n, flags);
1763 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1765 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1768 return -1; /* should never happen */
1772 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1776 I32 id, n, cmd, infosize, getinfo;
1779 id = SvIVx(*++mark);
1780 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1781 cmd = SvIVx(*++mark);
1784 getinfo = (cmd == IPC_STAT);
1790 if (cmd == IPC_STAT || cmd == IPC_SET)
1791 infosize = sizeof(struct msqid_ds);
1796 if (cmd == IPC_STAT || cmd == IPC_SET)
1797 infosize = sizeof(struct shmid_ds);
1803 if (cmd == IPC_STAT || cmd == IPC_SET)
1804 infosize = sizeof(struct semid_ds);
1805 else if (cmd == GETALL || cmd == SETALL)
1807 struct semid_ds semds;
1809 #ifdef EXTRA_F_IN_SEMUN_BUF
1810 semun.buff = &semds;
1814 getinfo = (cmd == GETALL);
1815 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1817 infosize = semds.sem_nsems * sizeof(short);
1818 /* "short" is technically wrong but much more portable
1819 than guessing about u_?short(_t)? */
1822 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1826 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1828 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1837 SvPV_force(astr, len);
1838 a = SvGROW(astr, infosize+1);
1842 a = SvPV(astr, len);
1843 if (len != infosize)
1844 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1853 a = INT2PTR(char *,i); /* ouch */
1860 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1866 union semun unsemds;
1868 #ifdef EXTRA_F_IN_SEMUN_BUF
1869 unsemds.buff = (struct semid_ds *)a;
1871 unsemds.buf = (struct semid_ds *)a;
1873 ret = Semctl(id, n, cmd, unsemds);
1875 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1882 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1886 if (getinfo && ret >= 0) {
1887 SvCUR_set(astr, infosize);
1888 *SvEND(astr) = '\0';
1895 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1900 I32 id, msize, flags;
1903 id = SvIVx(*++mark);
1905 flags = SvIVx(*++mark);
1906 mbuf = SvPV(mstr, len);
1907 if ((msize = len - sizeof(long)) < 0)
1908 Perl_croak(aTHX_ "Arg too short for msgsnd");
1910 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1912 Perl_croak(aTHX_ "msgsnd not implemented");
1917 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1923 I32 id, msize, flags, ret;
1926 id = SvIVx(*++mark);
1928 /* suppress warning when reading into undef var --jhi */
1930 sv_setpvn(mstr, "", 0);
1931 msize = SvIVx(*++mark);
1932 mtype = (long)SvIVx(*++mark);
1933 flags = SvIVx(*++mark);
1934 SvPV_force(mstr, len);
1935 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1938 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1940 SvCUR_set(mstr, sizeof(long)+ret);
1941 *SvEND(mstr) = '\0';
1942 #ifndef INCOMPLETE_TAINTS
1943 /* who knows who has been playing with this message? */
1949 Perl_croak(aTHX_ "msgrcv not implemented");
1954 Perl_do_semop(pTHX_ SV **mark, SV **sp)
1962 id = SvIVx(*++mark);
1964 opbuf = SvPV(opstr, opsize);
1965 if (opsize < sizeof(struct sembuf)
1966 || (opsize % sizeof(struct sembuf)) != 0) {
1967 SETERRNO(EINVAL,LIB$_INVARG);
1971 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1973 Perl_croak(aTHX_ "semop not implemented");
1978 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
1983 I32 id, mpos, msize;
1985 struct shmid_ds shmds;
1987 id = SvIVx(*++mark);
1989 mpos = SvIVx(*++mark);
1990 msize = SvIVx(*++mark);
1992 if (shmctl(id, IPC_STAT, &shmds) == -1)
1994 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1995 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1998 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1999 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2001 if (optype == OP_SHMREAD) {
2002 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2004 sv_setpvn(mstr, "", 0);
2005 SvPV_force(mstr, len);
2006 mbuf = SvGROW(mstr, msize+1);
2008 Copy(shm + mpos, mbuf, msize, char);
2009 SvCUR_set(mstr, msize);
2010 *SvEND(mstr) = '\0';
2012 #ifndef INCOMPLETE_TAINTS
2013 /* who knows who has been playing with this shared memory? */
2020 mbuf = SvPV(mstr, len);
2021 if ((n = len) > msize)
2023 Copy(mbuf, shm + mpos, n, char);
2025 memzero(shm + mpos + n, msize - n);
2029 Perl_croak(aTHX_ "shm I/O not implemented");
2033 #endif /* SYSV IPC */
2036 =for apidoc start_glob
2038 Function called by C<do_readline> to spawn a glob (or do the glob inside
2039 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2040 this glob starter is only used by miniperl during the build proccess.
2041 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2047 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2049 SV *tmpcmd = NEWSV(55, 0);
2053 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2054 /* since spawning off a process is a real performance hit */
2056 #include <descrip.h>
2057 #include <lib$routines.h>
2060 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2061 char vmsspec[NAM$C_MAXRSS+1];
2062 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2063 char tmpfnam[L_tmpnam] = "SYS$SCRATCH:";
2064 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2067 struct dsc$descriptor_s wilddsc
2068 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2069 struct dsc$descriptor_vs rsdsc
2070 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2071 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2073 /* We could find out if there's an explicit dev/dir or version
2074 by peeking into lib$find_file's internal context at
2075 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2076 but that's unsupported, so I don't want to do it now and
2077 have it bite someone in the future. */
2078 strcat(tmpfnam,PerlLIO_tmpnam(NULL));
2079 cp = SvPV(tmpglob,i);
2081 if (cp[i] == ';') hasver = 1;
2083 if (sts) hasver = 1;
2087 hasdir = isunix = 1;
2090 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2095 if ((tmpfp = PerlIO_open(tmpfnam,"w+","fop=dlt")) != NULL) {
2097 if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
2098 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2099 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2100 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2101 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2102 &dfltdsc,NULL,NULL,NULL))&1)) {
2103 end = rstr + (unsigned long int) *rslt;
2104 if (!hasver) while (*end != ';') end--;
2105 *(end++) = '\n'; *end = '\0';
2106 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2108 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2113 while (*(--begin) != ']' && *begin != '>') ;
2116 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2118 if (cxt) (void)lib$find_file_end(&cxt);
2119 if (ok && sts != RMS$_NMF &&
2120 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
2123 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2125 PerlIO_close(tmpfp);
2129 PerlIO_rewind(tmpfp);
2130 IoTYPE(io) = IoTYPE_RDONLY;
2131 IoIFP(io) = fp = tmpfp;
2132 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2137 #ifdef MACOS_TRADITIONAL
2138 sv_setpv(tmpcmd, "glob ");
2139 sv_catsv(tmpcmd, tmpglob);
2140 sv_catpv(tmpcmd, " |");
2144 sv_setpv(tmpcmd, "for a in ");
2145 sv_catsv(tmpcmd, tmpglob);
2146 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2149 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2150 sv_catsv(tmpcmd, tmpglob);
2152 sv_setpv(tmpcmd, "perlglob ");
2153 sv_catsv(tmpcmd, tmpglob);
2154 sv_catpv(tmpcmd, " |");
2159 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2160 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2161 sv_catsv(tmpcmd, tmpglob);
2162 sv_catpv(tmpcmd, "' 2>/dev/null |");
2164 sv_setpv(tmpcmd, "echo ");
2165 sv_catsv(tmpcmd, tmpglob);
2167 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2169 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2172 #endif /* !DOSISH */
2173 #endif /* MACOS_TRADITIONAL */
2174 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2175 FALSE, O_RDONLY, 0, Nullfp);