3 * Copyright (c) 1991-2000, 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)
54 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
60 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
61 int rawmode, int rawperm, PerlIO *supplied_fp)
63 return do_open9(gv, name, len, as_raw, rawmode, rawperm,
64 supplied_fp, Nullsv, 0);
68 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
69 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
72 register IO *io = GvIOn(gv);
73 PerlIO *saveifp = Nullfp;
74 PerlIO *saveofp = Nullfp;
75 char savetype = IoTYPE_CLOSED;
80 bool was_fdopen = FALSE;
81 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
84 char mode[4]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
86 Zero(mode,sizeof(mode),char);
87 PL_forkprocess = 1; /* assume true if no fork */
89 /* Collect default raw/crlf info from the op */
90 if (PL_op && PL_op->op_type == OP_OPEN) {
91 /* set up disciplines */
92 U8 flags = PL_op->op_private;
93 in_raw = (flags & OPpOPEN_IN_RAW);
94 in_crlf = (flags & OPpOPEN_IN_CRLF);
95 out_raw = (flags & OPpOPEN_OUT_RAW);
96 out_crlf = (flags & OPpOPEN_OUT_CRLF);
99 /* If currently open - close before we re-open */
101 fd = PerlIO_fileno(IoIFP(io));
102 if (IoTYPE(io) == IoTYPE_STD)
104 else if (fd <= PL_maxsysfd) {
107 savetype = IoTYPE(io);
110 else if (IoTYPE(io) == IoTYPE_PIPE)
111 result = PerlProc_pclose(IoIFP(io));
112 else if (IoIFP(io) != IoOFP(io)) {
114 result = PerlIO_close(IoOFP(io));
115 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
118 result = PerlIO_close(IoIFP(io));
121 result = PerlIO_close(IoIFP(io));
122 if (result == EOF && fd > PL_maxsysfd)
123 PerlIO_printf(Perl_error_log,
124 "Warning: unable to close filehandle %s properly.\n",
126 IoOFP(io) = IoIFP(io) = Nullfp;
130 /* sysopen style args, i.e. integer mode and permissions */
132 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
133 rawmode |= O_LARGEFILE;
137 #define O_ACCMODE 3 /* Assume traditional implementation */
140 switch (result = rawmode & O_ACCMODE) {
142 IoTYPE(io) = IoTYPE_RDONLY;
145 IoTYPE(io) = IoTYPE_WRONLY;
149 IoTYPE(io) = IoTYPE_RDWR;
153 writing = (result > 0);
154 fd = PerlLIO_open3(name, rawmode, rawperm);
160 if (result == O_RDONLY) {
164 else if (rawmode & O_APPEND) {
166 if (result != O_WRONLY)
171 if (result == O_WRONLY)
178 if (rawmode & O_BINARY)
181 fp = PerlIO_fdopen(fd, mode);
187 /* Regular (non-sys) open */
193 type = savepvn(name, len);
196 /* Loose trailing white space */
197 while (tend > type && isSPACE(tend[-1]))
200 /* New style explict name, type is just mode and discipline/layer info */
202 name = SvPV(svs, l) ;
204 name = savepvn(name, len);
207 for (; isSPACE(*type); type++) ;
214 if (*type == IoTYPE_RDWR && (!num_svs || tend > type+1 && tend[-1] != IoTYPE_PIPE)) { /* scary */
219 if (*type == IoTYPE_PIPE) {
221 if (type[1] != IoTYPE_STD) {
223 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
228 for (type++; isSPACE(*type); type++) ;
233 if (*name == '\0') { /* command is missing 19990114 */
235 if (ckWARN(WARN_PIPE))
236 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
240 if (strNE(name,"-") || num_svs)
242 TAINT_PROPER("piped open");
243 if (!num_svs && name[len-1] == '|') {
246 if (ckWARN(WARN_PIPE))
247 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
255 fp = PerlProc_popen(name,mode);
257 else if (*type == IoTYPE_WRONLY) {
258 TAINT_PROPER("open");
260 if (*type == IoTYPE_WRONLY) {
261 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
262 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
285 if (!*name && supplied_fp)
289 for (; isSPACE(*name); name++) ;
294 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
298 SETERRNO(EINVAL,SS$_IVCHAN);
303 PerlIO *fp = IoIFP(thatio);
304 /* Flush stdio buffer before dup. --mjd
305 * Unfortunately SEEK_CURing 0 seems to
306 * be optimized away on most platforms;
307 * only Solaris and Linux seem to flush
310 /* sfio fails to clear error on next
311 sfwrite, contrary to documentation.
313 if (PerlIO_seek(fp, 0, SEEK_CUR) == -1)
316 /* On the other hand, do all platforms
317 * take gracefully to flushing a read-only
318 * filehandle? Perhaps we should do
319 * fsetpos(src)+fgetpos(dst)? --nik */
321 fd = PerlIO_fileno(fp);
322 /* When dup()ing STDIN, STDOUT or STDERR
323 * explicitly set appropriate access mode */
324 if (IoIFP(thatio) == PerlIO_stdout()
325 || IoIFP(thatio) == PerlIO_stderr())
326 IoTYPE(io) = IoTYPE_WRONLY;
327 else if (IoIFP(thatio) == PerlIO_stdin())
328 IoTYPE(io) = IoTYPE_RDONLY;
329 /* When dup()ing a socket, say result is
331 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
332 IoTYPE(io) = IoTYPE_SOCKET;
338 fd = PerlLIO_dup(fd);
341 if (!(fp = PerlIO_fdopen(fd,mode))) {
349 for (; isSPACE(*type); type++) ;
350 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
353 fp = PerlIO_stdout();
354 IoTYPE(io) = IoTYPE_STD;
357 fp = PerlIO_open((num_svs ? name : type), mode);
361 else if (*type == IoTYPE_RDONLY) {
363 for (type++; isSPACE(*type); type++) ;
374 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
378 IoTYPE(io) = IoTYPE_STD;
381 fp = PerlIO_open((num_svs ? name : type), mode);
383 else if ((num_svs && type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
384 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
386 type += 2; /* skip over '-|' */
390 while (tend > type && isSPACE(tend[-1]))
393 for (; isSPACE(*type); type++) ;
397 if (*name == '\0') { /* command is missing 19990114 */
399 if (ckWARN(WARN_PIPE))
400 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
404 if (strNE(name,"-") || num_svs)
406 TAINT_PROPER("piped open");
412 fp = PerlProc_popen(name,mode);
413 IoTYPE(io) = IoTYPE_PIPE;
419 IoTYPE(io) = IoTYPE_RDONLY;
421 for (; isSPACE(*name); name++) ;
422 if (strEQ(name,"-")) {
424 IoTYPE(io) = IoTYPE_STD;
432 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");
443 IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD) {
445 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
446 (void)PerlIO_close(fp);
449 if (S_ISSOCK(PL_statbuf.st_mode))
450 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
454 !(PL_statbuf.st_mode & S_IFMT)
458 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
459 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
460 ) { /* on OS's that return 0 on fstat()ed pipe */
462 Sock_size_t buflen = sizeof tmpbuf;
463 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
465 || errno != ENOTSOCK)
466 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
467 /* but some return 0 for streams too, sigh */
471 if (saveifp) { /* must use old fp? */
472 fd = PerlIO_fileno(saveifp);
474 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
475 if (saveofp != saveifp) { /* was a socket? */
476 PerlIO_close(saveofp);
481 if (fd != PerlIO_fileno(fp)) {
485 PerlLIO_dup2(PerlIO_fileno(fp), fd);
487 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
488 (void)SvUPGRADE(sv, SVt_IV);
491 sv = *av_fetch(PL_fdpid,fd,TRUE);
493 (void)SvUPGRADE(sv, SVt_IV);
502 #if defined(HAS_FCNTL) && defined(F_SETFD)
504 int save_errno = errno;
505 fd = PerlIO_fileno(fp);
506 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
512 /* Need to supply default type info from open.pm */
516 while (isSPACE(*type)) type++;
521 IoFLAGS(io) &= ~IOf_NOLINE;
524 if (IoTYPE(io) == IoTYPE_SOCKET
525 || (IoTYPE(io) == IoTYPE_WRONLY && S_ISCHR(PL_statbuf.st_mode)) )
528 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),mode))) {
542 IoTYPE(io) = savetype;
547 Perl_nextargv(pTHX_ register GV *gv)
550 #ifndef FLEXFILENAMES
559 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
560 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
561 IoFLAGS(io) &= ~IOf_START;
563 if (!PL_argvout_stack)
564 PL_argvout_stack = newAV();
565 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
568 if (PL_filemode & (S_ISUID|S_ISGID)) {
569 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
571 (void)fchmod(PL_lastfd,PL_filemode);
573 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
577 while (av_len(GvAV(gv)) >= 0) {
580 sv = av_shift(GvAV(gv));
582 sv_setsv(GvSV(gv),sv);
583 SvSETMAGIC(GvSV(gv));
584 PL_oldname = SvPVx(GvSV(gv), oldlen);
585 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
587 TAINT_PROPER("inplace open");
588 if (oldlen == 1 && *PL_oldname == '-') {
589 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
590 return IoIFP(GvIOp(gv));
592 #ifndef FLEXFILENAMES
593 filedev = PL_statbuf.st_dev;
594 fileino = PL_statbuf.st_ino;
596 PL_filemode = PL_statbuf.st_mode;
597 fileuid = PL_statbuf.st_uid;
598 filegid = PL_statbuf.st_gid;
599 if (!S_ISREG(PL_filemode)) {
600 if (ckWARN_d(WARN_INPLACE))
601 Perl_warner(aTHX_ WARN_INPLACE,
602 "Can't do inplace edit: %s is not a regular file",
608 char *star = strchr(PL_inplace, '*');
610 char *begin = PL_inplace;
611 sv_setpvn(sv, "", 0);
613 sv_catpvn(sv, begin, star - begin);
614 sv_catpvn(sv, PL_oldname, oldlen);
616 } while ((star = strchr(begin, '*')));
621 sv_catpv(sv,PL_inplace);
623 #ifndef FLEXFILENAMES
624 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
625 && PL_statbuf.st_dev == filedev
626 && PL_statbuf.st_ino == fileino
628 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
632 if (ckWARN_d(WARN_INPLACE))
633 Perl_warner(aTHX_ WARN_INPLACE,
634 "Can't do inplace edit: %s would not be unique",
641 #if !defined(DOSISH) && !defined(__CYGWIN__)
642 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
643 if (ckWARN_d(WARN_INPLACE))
644 Perl_warner(aTHX_ WARN_INPLACE,
645 "Can't rename %s to %s: %s, skipping file",
646 PL_oldname, SvPVX(sv), Strerror(errno) );
652 (void)PerlLIO_unlink(SvPVX(sv));
653 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
654 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
657 (void)UNLINK(SvPVX(sv));
658 if (link(PL_oldname,SvPVX(sv)) < 0) {
659 if (ckWARN_d(WARN_INPLACE))
660 Perl_warner(aTHX_ WARN_INPLACE,
661 "Can't rename %s to %s: %s, skipping file",
662 PL_oldname, SvPVX(sv), Strerror(errno) );
666 (void)UNLINK(PL_oldname);
670 #if !defined(DOSISH) && !defined(AMIGAOS)
671 # ifndef VMS /* Don't delete; use automatic file versioning */
672 if (UNLINK(PL_oldname) < 0) {
673 if (ckWARN_d(WARN_INPLACE))
674 Perl_warner(aTHX_ WARN_INPLACE,
675 "Can't remove %s: %s, skipping file",
676 PL_oldname, Strerror(errno) );
682 Perl_croak(aTHX_ "Can't do inplace edit without backup");
686 sv_setpvn(sv,">",!PL_inplace);
687 sv_catpvn(sv,PL_oldname,oldlen);
688 SETERRNO(0,0); /* in case sprintf set errno */
690 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
691 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
693 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
694 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
697 if (ckWARN_d(WARN_INPLACE))
698 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
699 PL_oldname, Strerror(errno) );
703 setdefout(PL_argvoutgv);
704 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
705 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
707 (void)fchmod(PL_lastfd,PL_filemode);
709 # if !(defined(WIN32) && defined(__BORLANDC__))
710 /* Borland runtime creates a readonly file! */
711 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
714 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
716 (void)fchown(PL_lastfd,fileuid,filegid);
719 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
724 return IoIFP(GvIOp(gv));
728 if (ckWARN_d(WARN_INPLACE)) {
730 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
731 && !S_ISREG(PL_statbuf.st_mode))
733 Perl_warner(aTHX_ WARN_INPLACE,
734 "Can't do inplace edit: %s is not a regular file",
738 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
739 PL_oldname, Strerror(eno));
743 if (io && (IoFLAGS(io) & IOf_ARGV))
744 IoFLAGS(io) |= IOf_START;
746 (void)do_close(PL_argvoutgv,FALSE);
747 if (io && (IoFLAGS(io) & IOf_ARGV)
748 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
750 GV *oldout = (GV*)av_pop(PL_argvout_stack);
752 SvREFCNT_dec(oldout);
755 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
762 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
781 if (PerlProc_pipe(fd) < 0)
783 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
784 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
785 IoIFP(wstio) = IoOFP(wstio);
786 IoTYPE(rstio) = IoTYPE_RDONLY;
787 IoTYPE(wstio) = IoTYPE_WRONLY;
788 if (!IoIFP(rstio) || !IoOFP(wstio)) {
789 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
790 else PerlLIO_close(fd[0]);
791 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
792 else PerlLIO_close(fd[1]);
796 sv_setsv(sv,&PL_sv_yes);
800 sv_setsv(sv,&PL_sv_undef);
805 /* explicit renamed to avoid C++ conflict -- kja */
807 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
814 if (!gv || SvTYPE(gv) != SVt_PVGV) {
816 SETERRNO(EBADF,SS$_IVCHAN);
820 if (!io) { /* never opened */
823 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
824 report_evil_fh(gv, io, PL_op->op_type);
825 SETERRNO(EBADF,SS$_IVCHAN);
829 retval = io_close(io, not_implicit);
833 IoLINES_LEFT(io) = IoPAGE_LEN(io);
835 IoTYPE(io) = IoTYPE_CLOSED;
840 Perl_io_close(pTHX_ IO *io, bool not_implicit)
846 if (IoTYPE(io) == IoTYPE_PIPE) {
847 status = PerlProc_pclose(IoIFP(io));
849 STATUS_NATIVE_SET(status);
850 retval = (STATUS_POSIX == 0);
853 retval = (status != -1);
856 else if (IoTYPE(io) == IoTYPE_STD)
859 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
860 retval = (PerlIO_close(IoOFP(io)) != EOF);
861 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
864 retval = (PerlIO_close(IoIFP(io)) != EOF);
866 IoOFP(io) = IoIFP(io) = Nullfp;
868 else if (not_implicit) {
869 SETERRNO(EBADF,SS$_IVCHAN);
876 Perl_do_eof(pTHX_ GV *gv)
886 else if (ckWARN(WARN_IO)
887 && (IoTYPE(io) == IoTYPE_WRONLY || IoIFP(io) == PerlIO_stdout()
888 || IoIFP(io) == PerlIO_stderr()))
890 /* integrate to report_evil_fh()? */
893 SV* sv = sv_newmortal();
894 gv_efullname4(sv, gv, Nullch, FALSE);
895 name = SvPV_nolen(sv);
898 Perl_warner(aTHX_ WARN_IO,
899 "Filehandle %s opened only for output", name);
901 Perl_warner(aTHX_ WARN_IO,
902 "Filehandle opened only for output");
907 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
908 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
909 return FALSE; /* this is the most usual case */
912 ch = PerlIO_getc(IoIFP(io));
914 (void)PerlIO_ungetc(IoIFP(io),ch);
917 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
918 if (PerlIO_get_cnt(IoIFP(io)) < -1)
919 PerlIO_set_cnt(IoIFP(io),-1);
921 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
922 if (!nextargv(PL_argvgv)) /* get another fp handy */
926 return TRUE; /* normal fp, definitely end of file */
932 Perl_do_tell(pTHX_ GV *gv)
937 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
938 #ifdef ULTRIX_STDIO_BOTCH
940 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
942 return PerlIO_tell(fp);
946 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
947 report_evil_fh(gv, io, PL_op->op_type);
949 SETERRNO(EBADF,RMS$_IFI);
954 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
959 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
960 #ifdef ULTRIX_STDIO_BOTCH
962 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
964 return PerlIO_seek(fp, pos, whence) >= 0;
968 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
969 report_evil_fh(gv, io, PL_op->op_type);
971 SETERRNO(EBADF,RMS$_IFI);
976 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
981 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
982 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
985 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
986 report_evil_fh(gv, io, PL_op->op_type);
988 SETERRNO(EBADF,RMS$_IFI);
993 Perl_mode_from_discipline(pTHX_ SV *discp)
998 char *s = SvPV(discp,len);
1003 if (len > 3 && strnEQ(s+1, "raw", 3)
1004 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1013 if (len > 4 && strnEQ(s+1, "crlf", 4)
1014 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1023 goto fail_discipline;
1026 else if (isSPACE(*s)) {
1033 end = strchr(s+1, ':');
1036 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1044 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1047 # if defined(atarist) || defined(__MINT__)
1048 if (!PerlIO_flush(fp)) {
1049 if (mode & O_BINARY)
1050 ((FILE*)fp)->_flag |= _IOBIN;
1052 ((FILE*)fp)->_flag &= ~ _IOBIN;
1057 if (PerlLIO_setmode(PerlIO_fileno(fp), mode) != -1) {
1058 # if defined(WIN32) && defined(__BORLANDC__)
1059 /* The translation mode of the stream is maintained independent
1060 * of the translation mode of the fd in the Borland RTL (heavy
1061 * digging through their runtime sources reveal). User has to
1062 * set the mode explicitly for the stream (though they don't
1063 * document this anywhere). GSAR 97-5-24
1065 PerlIO_seek(fp,0L,0);
1066 if (mode & O_BINARY)
1067 ((FILE*)fp)->flags |= _F_BIN;
1069 ((FILE*)fp)->flags &= ~ _F_BIN;
1077 # if defined(USEMYBINMODE)
1078 if (my_binmode(fp, iotype, mode) != FALSE)
1088 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1089 /* code courtesy of William Kucharski */
1092 I32 my_chsize(fd, length)
1093 I32 fd; /* file descriptor */
1094 Off_t length; /* length to set file to */
1097 struct stat filebuf;
1099 if (PerlLIO_fstat(fd, &filebuf) < 0)
1102 if (filebuf.st_size < length) {
1104 /* extend file length */
1106 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1109 /* write a "0" byte */
1111 if ((PerlLIO_write(fd, "", 1)) != 1)
1115 /* truncate length */
1119 fl.l_start = length;
1120 fl.l_type = F_WRLCK; /* write lock on file space */
1123 * This relies on the UNDOCUMENTED F_FREESP argument to
1124 * fcntl(2), which truncates the file so that it ends at the
1125 * position indicated by fl.l_start.
1127 * Will minor miracles never cease?
1130 if (fcntl(fd, F_FREESP, &fl) < 0)
1137 #endif /* F_FREESP */
1140 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1142 register char *tmps;
1145 /* assuming fp is checked earlier */
1151 if (SvIOK(sv) && SvIVX(sv) != 0) {
1152 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1153 return !PerlIO_error(fp);
1155 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1156 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1157 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1158 return !PerlIO_error(fp);
1161 switch (SvTYPE(sv)) {
1165 if (ckWARN(WARN_UNINITIALIZED))
1174 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1176 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1177 return !PerlIO_error(fp);
1182 /* XXX Fix this when the I/O disciplines arrive. XXX */
1184 sv_utf8_downgrade(sv, FALSE);
1186 tmps = SvPV(sv, len);
1189 /* To detect whether the process is about to overstep its
1190 * filesize limit we would need getrlimit(). We could then
1191 * also transparently raise the limit with setrlimit() --
1192 * but only until the system hard limit/the filesystem limit,
1193 * at which we would get EPERM. Note that when using buffered
1194 * io the write failure can be delayed until the flush/close. --jhi */
1195 if (len && (PerlIO_write(fp,tmps,len) == 0))
1197 return !PerlIO_error(fp);
1207 if (PL_op->op_flags & OPf_REF) {
1212 if (io && IoIFP(io)) {
1214 sv_setpv(PL_statname,"");
1215 PL_laststype = OP_STAT;
1216 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1220 return PL_laststatval;
1221 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1222 report_evil_fh(gv, io, PL_op->op_type);
1224 sv_setpv(PL_statname,"");
1225 return (PL_laststatval = -1);
1233 if (SvTYPE(sv) == SVt_PVGV) {
1237 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1244 sv_setpv(PL_statname, s);
1245 PL_laststype = OP_STAT;
1246 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1247 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1248 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1249 return PL_laststatval;
1259 if (PL_op->op_flags & OPf_REF) {
1261 if (cGVOP_gv == PL_defgv) {
1262 if (PL_laststype != OP_LSTAT)
1263 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1264 return PL_laststatval;
1266 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1269 PL_laststype = OP_LSTAT;
1273 sv_setpv(PL_statname,SvPV(sv, n_a));
1274 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1275 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1276 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1277 return PL_laststatval;
1281 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1283 return do_aexec5(really, mark, sp, 0, 0);
1287 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1288 int fd, int do_report)
1290 #ifdef MACOS_TRADITIONAL
1291 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1299 New(401,PL_Argv, sp - mark + 1, char*);
1301 while (++mark <= sp) {
1303 *a++ = SvPVx(*mark, n_a);
1308 if (*PL_Argv[0] != '/') /* will execvp use PATH? */
1309 TAINT_ENV(); /* testing IFS here is overkill, probably */
1310 if (really && *(tmps = SvPV(really, n_a)))
1311 PerlProc_execvp(tmps,PL_Argv);
1313 PerlProc_execvp(PL_Argv[0],PL_Argv);
1314 if (ckWARN(WARN_EXEC))
1315 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1316 PL_Argv[0], Strerror(errno));
1320 PerlLIO_write(fd, (void*)&e, sizeof(int));
1330 Perl_do_execfree(pTHX)
1334 PL_Argv = Null(char **);
1342 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1345 Perl_do_exec(pTHX_ char *cmd)
1347 return do_exec3(cmd,0,0);
1351 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1357 while (*cmd && isSPACE(*cmd))
1360 /* save an extra exec if possible */
1363 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1365 s = cmd+PL_cshlen+3;
1379 if (s[-1] == '\'') {
1381 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1389 /* see if there are shell metacharacters in it */
1391 if (*cmd == '.' && isSPACE(cmd[1]))
1394 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1397 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1401 for (s = cmd; *s; s++) {
1402 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1403 if (*s == '\n' && !s[1]) {
1407 /* handle the 2>&1 construct at the end */
1408 if (*s == '>' && s[1] == '&' && s[2] == '1'
1409 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1410 && (!s[3] || isSPACE(s[3])))
1414 while (*t && isSPACE(*t))
1416 if (!*t && (dup2(1,2) != -1)) {
1422 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1427 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1428 PL_Cmd = savepvn(cmd, s-cmd);
1430 for (s = PL_Cmd; *s;) {
1431 while (*s && isSPACE(*s)) s++;
1434 while (*s && !isSPACE(*s)) s++;
1440 PerlProc_execvp(PL_Argv[0],PL_Argv);
1441 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1449 if (ckWARN(WARN_EXEC))
1450 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1451 PL_Argv[0], Strerror(errno));
1453 PerlLIO_write(fd, (void*)&e, sizeof(int));
1462 #endif /* OS2 || WIN32 */
1465 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1470 register I32 tot = 0;
1473 SV **oldmark = mark;
1476 #define APPLY_TAINT_PROPER() \
1478 if (PL_tainted) { TAINT_PROPER(what); } \
1481 /* This is a first heuristic; it doesn't catch tainting magic. */
1483 while (++mark <= sp) {
1484 if (SvTAINTED(*mark)) {
1494 APPLY_TAINT_PROPER();
1497 APPLY_TAINT_PROPER();
1499 while (++mark <= sp) {
1500 char *name = SvPVx(*mark, n_a);
1501 APPLY_TAINT_PROPER();
1502 if (PerlLIO_chmod(name, val))
1510 APPLY_TAINT_PROPER();
1511 if (sp - mark > 2) {
1512 val = SvIVx(*++mark);
1513 val2 = SvIVx(*++mark);
1514 APPLY_TAINT_PROPER();
1516 while (++mark <= sp) {
1517 char *name = SvPVx(*mark, n_a);
1518 APPLY_TAINT_PROPER();
1519 if (PerlLIO_chown(name, val, val2))
1526 XXX Should we make lchown() directly available from perl?
1527 For now, we'll let Configure test for HAS_LCHOWN, but do
1528 nothing in the core.
1534 APPLY_TAINT_PROPER();
1537 s = SvPVx(*++mark, n_a);
1539 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1541 if (!(val = whichsig(s)))
1542 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1546 APPLY_TAINT_PROPER();
1549 /* kill() doesn't do process groups (job trees?) under VMS */
1550 if (val < 0) val = -val;
1551 if (val == SIGKILL) {
1552 # include <starlet.h>
1553 /* Use native sys$delprc() to insure that target process is
1554 * deleted; supervisor-mode images don't pay attention to
1555 * CRTL's emulation of Unix-style signals and kill()
1557 while (++mark <= sp) {
1558 I32 proc = SvIVx(*mark);
1559 register unsigned long int __vmssts;
1560 APPLY_TAINT_PROPER();
1561 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1565 case SS$_NOSUCHNODE:
1566 SETERRNO(ESRCH,__vmssts);
1569 SETERRNO(EPERM,__vmssts);
1572 SETERRNO(EVMSERR,__vmssts);
1581 while (++mark <= sp) {
1582 I32 proc = SvIVx(*mark);
1583 APPLY_TAINT_PROPER();
1585 if (PerlProc_killpg(proc,val)) /* BSD */
1587 if (PerlProc_kill(-proc,val)) /* SYSV */
1593 while (++mark <= sp) {
1594 I32 proc = SvIVx(*mark);
1595 APPLY_TAINT_PROPER();
1596 if (PerlProc_kill(proc, val))
1604 APPLY_TAINT_PROPER();
1606 while (++mark <= sp) {
1607 s = SvPVx(*mark, n_a);
1608 APPLY_TAINT_PROPER();
1609 if (PL_euid || PL_unsafe) {
1613 else { /* don't let root wipe out directories without -U */
1614 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1626 APPLY_TAINT_PROPER();
1627 if (sp - mark > 2) {
1628 #if defined(I_UTIME) || defined(VMS)
1629 struct utimbuf utbuf;
1637 Zero(&utbuf, sizeof utbuf, char);
1639 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1640 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1642 utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */
1643 utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */
1645 APPLY_TAINT_PROPER();
1647 while (++mark <= sp) {
1648 char *name = SvPVx(*mark, n_a);
1649 APPLY_TAINT_PROPER();
1650 if (PerlLIO_utime(name, &utbuf))
1661 #undef APPLY_TAINT_PROPER
1664 /* Do the permissions allow some operation? Assumes statcache already set. */
1665 #ifndef VMS /* VMS' cando is in vms.c */
1667 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1668 /* Note: we use `effective' both for uids and gids.
1669 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1672 /* [Comments and code from Len Reed]
1673 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1674 * to write-protected files. The execute permission bit is set
1675 * by the Miscrosoft C library stat() function for the following:
1680 * All files and directories are readable.
1681 * Directories and special files, e.g. "CON", cannot be
1683 * [Comment by Tom Dinger -- a directory can have the write-protect
1684 * bit set in the file system, but DOS permits changes to
1685 * the directory anyway. In addition, all bets are off
1686 * here for networked software, such as Novell and
1690 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1691 * too so it will actually look into the files for magic numbers
1693 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1695 #else /* ! DOSISH */
1696 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1697 if (mode == S_IXUSR) {
1698 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1702 return TRUE; /* root reads and writes anything */
1705 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1706 if (statbufp->st_mode & mode)
1707 return TRUE; /* ok as "user" */
1709 else if (ingroup(statbufp->st_gid,effective)) {
1710 if (statbufp->st_mode & mode >> 3)
1711 return TRUE; /* ok as "group" */
1713 else if (statbufp->st_mode & mode >> 6)
1714 return TRUE; /* ok as "other" */
1716 #endif /* ! DOSISH */
1721 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1723 #ifdef MACOS_TRADITIONAL
1724 /* This is simply not correct for AppleShare, but fix it yerself. */
1727 if (testgid == (effective ? PL_egid : PL_gid))
1729 #ifdef HAS_GETGROUPS
1734 Groups_t gary[NGROUPS];
1737 anum = getgroups(NGROUPS,gary);
1739 if (gary[anum] == testgid)
1747 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1750 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1756 key = (key_t)SvNVx(*++mark);
1757 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1758 flags = SvIVx(*++mark);
1764 return msgget(key, flags);
1768 return semget(key, n, flags);
1772 return shmget(key, n, flags);
1774 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1776 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1779 return -1; /* should never happen */
1783 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1788 I32 id, n, cmd, infosize, getinfo;
1791 id = SvIVx(*++mark);
1792 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1793 cmd = SvIVx(*++mark);
1796 getinfo = (cmd == IPC_STAT);
1802 if (cmd == IPC_STAT || cmd == IPC_SET)
1803 infosize = sizeof(struct msqid_ds);
1808 if (cmd == IPC_STAT || cmd == IPC_SET)
1809 infosize = sizeof(struct shmid_ds);
1815 if (cmd == IPC_STAT || cmd == IPC_SET)
1816 infosize = sizeof(struct semid_ds);
1817 else if (cmd == GETALL || cmd == SETALL)
1819 struct semid_ds semds;
1821 #ifdef EXTRA_F_IN_SEMUN_BUF
1822 semun.buff = &semds;
1826 getinfo = (cmd == GETALL);
1827 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1829 infosize = semds.sem_nsems * sizeof(short);
1830 /* "short" is technically wrong but much more portable
1831 than guessing about u_?short(_t)? */
1834 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1838 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1840 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1849 SvPV_force(astr, len);
1850 a = SvGROW(astr, infosize+1);
1854 a = SvPV(astr, len);
1855 if (len != infosize)
1856 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1865 a = INT2PTR(char *,i); /* ouch */
1872 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1878 union semun unsemds;
1880 #ifdef EXTRA_F_IN_SEMUN_BUF
1881 unsemds.buff = (struct semid_ds *)a;
1883 unsemds.buf = (struct semid_ds *)a;
1885 ret = Semctl(id, n, cmd, unsemds);
1887 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1894 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1898 if (getinfo && ret >= 0) {
1899 SvCUR_set(astr, infosize);
1900 *SvEND(astr) = '\0';
1907 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1913 I32 id, msize, flags;
1916 id = SvIVx(*++mark);
1918 flags = SvIVx(*++mark);
1919 mbuf = SvPV(mstr, len);
1920 if ((msize = len - sizeof(long)) < 0)
1921 Perl_croak(aTHX_ "Arg too short for msgsnd");
1923 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1925 Perl_croak(aTHX_ "msgsnd not implemented");
1930 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1937 I32 id, msize, flags, ret;
1940 id = SvIVx(*++mark);
1942 /* suppress warning when reading into undef var --jhi */
1944 sv_setpvn(mstr, "", 0);
1945 msize = SvIVx(*++mark);
1946 mtype = (long)SvIVx(*++mark);
1947 flags = SvIVx(*++mark);
1948 SvPV_force(mstr, len);
1949 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1952 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1954 SvCUR_set(mstr, sizeof(long)+ret);
1955 *SvEND(mstr) = '\0';
1956 #ifndef INCOMPLETE_TAINTS
1957 /* who knows who has been playing with this message? */
1963 Perl_croak(aTHX_ "msgrcv not implemented");
1968 Perl_do_semop(pTHX_ SV **mark, SV **sp)
1977 id = SvIVx(*++mark);
1979 opbuf = SvPV(opstr, opsize);
1980 if (opsize < sizeof(struct sembuf)
1981 || (opsize % sizeof(struct sembuf)) != 0) {
1982 SETERRNO(EINVAL,LIB$_INVARG);
1986 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1988 Perl_croak(aTHX_ "semop not implemented");
1993 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
1999 I32 id, mpos, msize;
2001 struct shmid_ds shmds;
2003 id = SvIVx(*++mark);
2005 mpos = SvIVx(*++mark);
2006 msize = SvIVx(*++mark);
2008 if (shmctl(id, IPC_STAT, &shmds) == -1)
2010 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2011 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2014 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2015 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2017 if (optype == OP_SHMREAD) {
2018 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2020 sv_setpvn(mstr, "", 0);
2021 SvPV_force(mstr, len);
2022 mbuf = SvGROW(mstr, msize+1);
2024 Copy(shm + mpos, mbuf, msize, char);
2025 SvCUR_set(mstr, msize);
2026 *SvEND(mstr) = '\0';
2028 #ifndef INCOMPLETE_TAINTS
2029 /* who knows who has been playing with this shared memory? */
2036 mbuf = SvPV(mstr, len);
2037 if ((n = len) > msize)
2039 Copy(mbuf, shm + mpos, n, char);
2041 memzero(shm + mpos + n, msize - n);
2045 Perl_croak(aTHX_ "shm I/O not implemented");
2049 #endif /* SYSV IPC */