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 */
513 SV *layers = PL_curcop->cop_io;
517 type = SvPV(layers,len);
518 if (type && mode[0] != 'r') {
519 /* Skip to write part */
520 char *s = strchr(type,0);
521 if (s && (s-type) < len) {
526 else if (O_BINARY != O_TEXT) {
531 while (isSPACE(*type)) type++;
533 if (PerlIO_apply_layers(aTHX_ IoIFP(io),mode,type) != 0) {
539 IoFLAGS(io) &= ~IOf_NOLINE;
542 if (IoTYPE(io) == IoTYPE_SOCKET
543 || (IoTYPE(io) == IoTYPE_WRONLY && S_ISCHR(PL_statbuf.st_mode)) )
546 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),mode))) {
552 if (PerlIO_apply_layers(aTHX_ IoOFP(io),mode,type) != 0) {
553 PerlIO_close(IoOFP(io));
569 IoTYPE(io) = savetype;
574 Perl_nextargv(pTHX_ register GV *gv)
577 #ifndef FLEXFILENAMES
586 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
587 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
588 IoFLAGS(io) &= ~IOf_START;
590 if (!PL_argvout_stack)
591 PL_argvout_stack = newAV();
592 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
595 if (PL_filemode & (S_ISUID|S_ISGID)) {
596 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
598 (void)fchmod(PL_lastfd,PL_filemode);
600 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
604 while (av_len(GvAV(gv)) >= 0) {
607 sv = av_shift(GvAV(gv));
609 sv_setsv(GvSV(gv),sv);
610 SvSETMAGIC(GvSV(gv));
611 PL_oldname = SvPVx(GvSV(gv), oldlen);
612 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
614 TAINT_PROPER("inplace open");
615 if (oldlen == 1 && *PL_oldname == '-') {
616 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
617 return IoIFP(GvIOp(gv));
619 #ifndef FLEXFILENAMES
620 filedev = PL_statbuf.st_dev;
621 fileino = PL_statbuf.st_ino;
623 PL_filemode = PL_statbuf.st_mode;
624 fileuid = PL_statbuf.st_uid;
625 filegid = PL_statbuf.st_gid;
626 if (!S_ISREG(PL_filemode)) {
627 if (ckWARN_d(WARN_INPLACE))
628 Perl_warner(aTHX_ WARN_INPLACE,
629 "Can't do inplace edit: %s is not a regular file",
635 char *star = strchr(PL_inplace, '*');
637 char *begin = PL_inplace;
638 sv_setpvn(sv, "", 0);
640 sv_catpvn(sv, begin, star - begin);
641 sv_catpvn(sv, PL_oldname, oldlen);
643 } while ((star = strchr(begin, '*')));
648 sv_catpv(sv,PL_inplace);
650 #ifndef FLEXFILENAMES
651 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
652 && PL_statbuf.st_dev == filedev
653 && PL_statbuf.st_ino == fileino
655 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
659 if (ckWARN_d(WARN_INPLACE))
660 Perl_warner(aTHX_ WARN_INPLACE,
661 "Can't do inplace edit: %s would not be unique",
668 #if !defined(DOSISH) && !defined(__CYGWIN__)
669 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
670 if (ckWARN_d(WARN_INPLACE))
671 Perl_warner(aTHX_ WARN_INPLACE,
672 "Can't rename %s to %s: %s, skipping file",
673 PL_oldname, SvPVX(sv), Strerror(errno) );
679 (void)PerlLIO_unlink(SvPVX(sv));
680 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
681 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
684 (void)UNLINK(SvPVX(sv));
685 if (link(PL_oldname,SvPVX(sv)) < 0) {
686 if (ckWARN_d(WARN_INPLACE))
687 Perl_warner(aTHX_ WARN_INPLACE,
688 "Can't rename %s to %s: %s, skipping file",
689 PL_oldname, SvPVX(sv), Strerror(errno) );
693 (void)UNLINK(PL_oldname);
697 #if !defined(DOSISH) && !defined(AMIGAOS)
698 # ifndef VMS /* Don't delete; use automatic file versioning */
699 if (UNLINK(PL_oldname) < 0) {
700 if (ckWARN_d(WARN_INPLACE))
701 Perl_warner(aTHX_ WARN_INPLACE,
702 "Can't remove %s: %s, skipping file",
703 PL_oldname, Strerror(errno) );
709 Perl_croak(aTHX_ "Can't do inplace edit without backup");
713 sv_setpvn(sv,">",!PL_inplace);
714 sv_catpvn(sv,PL_oldname,oldlen);
715 SETERRNO(0,0); /* in case sprintf set errno */
717 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
718 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
720 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
721 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
724 if (ckWARN_d(WARN_INPLACE))
725 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
726 PL_oldname, Strerror(errno) );
730 setdefout(PL_argvoutgv);
731 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
732 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
734 (void)fchmod(PL_lastfd,PL_filemode);
736 # if !(defined(WIN32) && defined(__BORLANDC__))
737 /* Borland runtime creates a readonly file! */
738 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
741 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
743 (void)fchown(PL_lastfd,fileuid,filegid);
746 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
751 return IoIFP(GvIOp(gv));
755 if (ckWARN_d(WARN_INPLACE)) {
757 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
758 && !S_ISREG(PL_statbuf.st_mode))
760 Perl_warner(aTHX_ WARN_INPLACE,
761 "Can't do inplace edit: %s is not a regular file",
765 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
766 PL_oldname, Strerror(eno));
770 if (io && (IoFLAGS(io) & IOf_ARGV))
771 IoFLAGS(io) |= IOf_START;
773 (void)do_close(PL_argvoutgv,FALSE);
774 if (io && (IoFLAGS(io) & IOf_ARGV)
775 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
777 GV *oldout = (GV*)av_pop(PL_argvout_stack);
779 SvREFCNT_dec(oldout);
782 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
789 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
808 if (PerlProc_pipe(fd) < 0)
810 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
811 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
812 IoIFP(wstio) = IoOFP(wstio);
813 IoTYPE(rstio) = IoTYPE_RDONLY;
814 IoTYPE(wstio) = IoTYPE_WRONLY;
815 if (!IoIFP(rstio) || !IoOFP(wstio)) {
816 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
817 else PerlLIO_close(fd[0]);
818 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
819 else PerlLIO_close(fd[1]);
823 sv_setsv(sv,&PL_sv_yes);
827 sv_setsv(sv,&PL_sv_undef);
832 /* explicit renamed to avoid C++ conflict -- kja */
834 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
841 if (!gv || SvTYPE(gv) != SVt_PVGV) {
843 SETERRNO(EBADF,SS$_IVCHAN);
847 if (!io) { /* never opened */
850 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
851 report_evil_fh(gv, io, PL_op->op_type);
852 SETERRNO(EBADF,SS$_IVCHAN);
856 retval = io_close(io, not_implicit);
860 IoLINES_LEFT(io) = IoPAGE_LEN(io);
862 IoTYPE(io) = IoTYPE_CLOSED;
867 Perl_io_close(pTHX_ IO *io, bool not_implicit)
873 if (IoTYPE(io) == IoTYPE_PIPE) {
874 status = PerlProc_pclose(IoIFP(io));
876 STATUS_NATIVE_SET(status);
877 retval = (STATUS_POSIX == 0);
880 retval = (status != -1);
883 else if (IoTYPE(io) == IoTYPE_STD)
886 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
887 retval = (PerlIO_close(IoOFP(io)) != EOF);
888 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
891 retval = (PerlIO_close(IoIFP(io)) != EOF);
893 IoOFP(io) = IoIFP(io) = Nullfp;
895 else if (not_implicit) {
896 SETERRNO(EBADF,SS$_IVCHAN);
903 Perl_do_eof(pTHX_ GV *gv)
913 else if (ckWARN(WARN_IO)
914 && (IoTYPE(io) == IoTYPE_WRONLY || IoIFP(io) == PerlIO_stdout()
915 || IoIFP(io) == PerlIO_stderr()))
917 /* integrate to report_evil_fh()? */
920 SV* sv = sv_newmortal();
921 gv_efullname4(sv, gv, Nullch, FALSE);
922 name = SvPV_nolen(sv);
925 Perl_warner(aTHX_ WARN_IO,
926 "Filehandle %s opened only for output", name);
928 Perl_warner(aTHX_ WARN_IO,
929 "Filehandle opened only for output");
934 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
935 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
936 return FALSE; /* this is the most usual case */
939 ch = PerlIO_getc(IoIFP(io));
941 (void)PerlIO_ungetc(IoIFP(io),ch);
944 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
945 if (PerlIO_get_cnt(IoIFP(io)) < -1)
946 PerlIO_set_cnt(IoIFP(io),-1);
948 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
949 if (!nextargv(PL_argvgv)) /* get another fp handy */
953 return TRUE; /* normal fp, definitely end of file */
959 Perl_do_tell(pTHX_ GV *gv)
964 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
965 #ifdef ULTRIX_STDIO_BOTCH
967 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
969 return PerlIO_tell(fp);
973 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
974 report_evil_fh(gv, io, PL_op->op_type);
976 SETERRNO(EBADF,RMS$_IFI);
981 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
986 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
987 #ifdef ULTRIX_STDIO_BOTCH
989 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
991 return PerlIO_seek(fp, pos, whence) >= 0;
995 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
996 report_evil_fh(gv, io, PL_op->op_type);
998 SETERRNO(EBADF,RMS$_IFI);
1003 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1006 register PerlIO *fp;
1008 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1009 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1012 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1013 report_evil_fh(gv, io, PL_op->op_type);
1015 SETERRNO(EBADF,RMS$_IFI);
1020 Perl_mode_from_discipline(pTHX_ SV *discp)
1022 int mode = O_BINARY;
1025 char *s = SvPV(discp,len);
1030 if (len > 3 && strnEQ(s+1, "raw", 3)
1031 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1040 if (len > 4 && strnEQ(s+1, "crlf", 4)
1041 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1050 goto fail_discipline;
1053 else if (isSPACE(*s)) {
1060 end = strchr(s+1, ':');
1063 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1071 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1074 # if defined(atarist) || defined(__MINT__)
1075 if (!PerlIO_flush(fp)) {
1076 if (mode & O_BINARY)
1077 ((FILE*)fp)->_flag |= _IOBIN;
1079 ((FILE*)fp)->_flag &= ~ _IOBIN;
1084 if (PerlLIO_setmode(PerlIO_fileno(fp), mode) != -1) {
1085 # if defined(WIN32) && defined(__BORLANDC__)
1086 /* The translation mode of the stream is maintained independent
1087 * of the translation mode of the fd in the Borland RTL (heavy
1088 * digging through their runtime sources reveal). User has to
1089 * set the mode explicitly for the stream (though they don't
1090 * document this anywhere). GSAR 97-5-24
1092 PerlIO_seek(fp,0L,0);
1093 if (mode & O_BINARY)
1094 ((FILE*)fp)->flags |= _F_BIN;
1096 ((FILE*)fp)->flags &= ~ _F_BIN;
1104 # if defined(USEMYBINMODE)
1105 if (my_binmode(fp, iotype, mode) != FALSE)
1115 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1116 /* code courtesy of William Kucharski */
1119 I32 my_chsize(fd, length)
1120 I32 fd; /* file descriptor */
1121 Off_t length; /* length to set file to */
1124 struct stat filebuf;
1126 if (PerlLIO_fstat(fd, &filebuf) < 0)
1129 if (filebuf.st_size < length) {
1131 /* extend file length */
1133 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1136 /* write a "0" byte */
1138 if ((PerlLIO_write(fd, "", 1)) != 1)
1142 /* truncate length */
1146 fl.l_start = length;
1147 fl.l_type = F_WRLCK; /* write lock on file space */
1150 * This relies on the UNDOCUMENTED F_FREESP argument to
1151 * fcntl(2), which truncates the file so that it ends at the
1152 * position indicated by fl.l_start.
1154 * Will minor miracles never cease?
1157 if (fcntl(fd, F_FREESP, &fl) < 0)
1164 #endif /* F_FREESP */
1167 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1169 register char *tmps;
1172 /* assuming fp is checked earlier */
1178 if (SvIOK(sv) && SvIVX(sv) != 0) {
1179 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1180 return !PerlIO_error(fp);
1182 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1183 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1184 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1185 return !PerlIO_error(fp);
1188 switch (SvTYPE(sv)) {
1192 if (ckWARN(WARN_UNINITIALIZED))
1201 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1203 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1204 return !PerlIO_error(fp);
1209 /* XXX Fix this when the I/O disciplines arrive. XXX */
1211 sv_utf8_downgrade(sv, FALSE);
1213 tmps = SvPV(sv, len);
1216 /* To detect whether the process is about to overstep its
1217 * filesize limit we would need getrlimit(). We could then
1218 * also transparently raise the limit with setrlimit() --
1219 * but only until the system hard limit/the filesystem limit,
1220 * at which we would get EPERM. Note that when using buffered
1221 * io the write failure can be delayed until the flush/close. --jhi */
1222 if (len && (PerlIO_write(fp,tmps,len) == 0))
1224 return !PerlIO_error(fp);
1234 if (PL_op->op_flags & OPf_REF) {
1239 if (io && IoIFP(io)) {
1241 sv_setpv(PL_statname,"");
1242 PL_laststype = OP_STAT;
1243 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1247 return PL_laststatval;
1248 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1249 report_evil_fh(gv, io, PL_op->op_type);
1251 sv_setpv(PL_statname,"");
1252 return (PL_laststatval = -1);
1260 if (SvTYPE(sv) == SVt_PVGV) {
1264 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1271 sv_setpv(PL_statname, s);
1272 PL_laststype = OP_STAT;
1273 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1274 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1275 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1276 return PL_laststatval;
1286 if (PL_op->op_flags & OPf_REF) {
1288 if (cGVOP_gv == PL_defgv) {
1289 if (PL_laststype != OP_LSTAT)
1290 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1291 return PL_laststatval;
1293 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1296 PL_laststype = OP_LSTAT;
1300 sv_setpv(PL_statname,SvPV(sv, n_a));
1301 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1302 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1303 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1304 return PL_laststatval;
1308 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1310 return do_aexec5(really, mark, sp, 0, 0);
1314 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1315 int fd, int do_report)
1317 #ifdef MACOS_TRADITIONAL
1318 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1326 New(401,PL_Argv, sp - mark + 1, char*);
1328 while (++mark <= sp) {
1330 *a++ = SvPVx(*mark, n_a);
1335 if (*PL_Argv[0] != '/') /* will execvp use PATH? */
1336 TAINT_ENV(); /* testing IFS here is overkill, probably */
1337 if (really && *(tmps = SvPV(really, n_a)))
1338 PerlProc_execvp(tmps,PL_Argv);
1340 PerlProc_execvp(PL_Argv[0],PL_Argv);
1341 if (ckWARN(WARN_EXEC))
1342 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1343 PL_Argv[0], Strerror(errno));
1347 PerlLIO_write(fd, (void*)&e, sizeof(int));
1357 Perl_do_execfree(pTHX)
1361 PL_Argv = Null(char **);
1369 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1372 Perl_do_exec(pTHX_ char *cmd)
1374 return do_exec3(cmd,0,0);
1378 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1384 while (*cmd && isSPACE(*cmd))
1387 /* save an extra exec if possible */
1390 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1392 s = cmd+PL_cshlen+3;
1406 if (s[-1] == '\'') {
1408 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1416 /* see if there are shell metacharacters in it */
1418 if (*cmd == '.' && isSPACE(cmd[1]))
1421 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1424 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1428 for (s = cmd; *s; s++) {
1429 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1430 if (*s == '\n' && !s[1]) {
1434 /* handle the 2>&1 construct at the end */
1435 if (*s == '>' && s[1] == '&' && s[2] == '1'
1436 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1437 && (!s[3] || isSPACE(s[3])))
1441 while (*t && isSPACE(*t))
1443 if (!*t && (dup2(1,2) != -1)) {
1449 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1454 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1455 PL_Cmd = savepvn(cmd, s-cmd);
1457 for (s = PL_Cmd; *s;) {
1458 while (*s && isSPACE(*s)) s++;
1461 while (*s && !isSPACE(*s)) s++;
1467 PerlProc_execvp(PL_Argv[0],PL_Argv);
1468 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1476 if (ckWARN(WARN_EXEC))
1477 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1478 PL_Argv[0], Strerror(errno));
1480 PerlLIO_write(fd, (void*)&e, sizeof(int));
1489 #endif /* OS2 || WIN32 */
1492 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1497 register I32 tot = 0;
1500 SV **oldmark = mark;
1503 #define APPLY_TAINT_PROPER() \
1505 if (PL_tainted) { TAINT_PROPER(what); } \
1508 /* This is a first heuristic; it doesn't catch tainting magic. */
1510 while (++mark <= sp) {
1511 if (SvTAINTED(*mark)) {
1521 APPLY_TAINT_PROPER();
1524 APPLY_TAINT_PROPER();
1526 while (++mark <= sp) {
1527 char *name = SvPVx(*mark, n_a);
1528 APPLY_TAINT_PROPER();
1529 if (PerlLIO_chmod(name, val))
1537 APPLY_TAINT_PROPER();
1538 if (sp - mark > 2) {
1539 val = SvIVx(*++mark);
1540 val2 = SvIVx(*++mark);
1541 APPLY_TAINT_PROPER();
1543 while (++mark <= sp) {
1544 char *name = SvPVx(*mark, n_a);
1545 APPLY_TAINT_PROPER();
1546 if (PerlLIO_chown(name, val, val2))
1553 XXX Should we make lchown() directly available from perl?
1554 For now, we'll let Configure test for HAS_LCHOWN, but do
1555 nothing in the core.
1561 APPLY_TAINT_PROPER();
1564 s = SvPVx(*++mark, n_a);
1566 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1568 if (!(val = whichsig(s)))
1569 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1573 APPLY_TAINT_PROPER();
1576 /* kill() doesn't do process groups (job trees?) under VMS */
1577 if (val < 0) val = -val;
1578 if (val == SIGKILL) {
1579 # include <starlet.h>
1580 /* Use native sys$delprc() to insure that target process is
1581 * deleted; supervisor-mode images don't pay attention to
1582 * CRTL's emulation of Unix-style signals and kill()
1584 while (++mark <= sp) {
1585 I32 proc = SvIVx(*mark);
1586 register unsigned long int __vmssts;
1587 APPLY_TAINT_PROPER();
1588 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1592 case SS$_NOSUCHNODE:
1593 SETERRNO(ESRCH,__vmssts);
1596 SETERRNO(EPERM,__vmssts);
1599 SETERRNO(EVMSERR,__vmssts);
1608 while (++mark <= sp) {
1609 I32 proc = SvIVx(*mark);
1610 APPLY_TAINT_PROPER();
1612 if (PerlProc_killpg(proc,val)) /* BSD */
1614 if (PerlProc_kill(-proc,val)) /* SYSV */
1620 while (++mark <= sp) {
1621 I32 proc = SvIVx(*mark);
1622 APPLY_TAINT_PROPER();
1623 if (PerlProc_kill(proc, val))
1631 APPLY_TAINT_PROPER();
1633 while (++mark <= sp) {
1634 s = SvPVx(*mark, n_a);
1635 APPLY_TAINT_PROPER();
1636 if (PL_euid || PL_unsafe) {
1640 else { /* don't let root wipe out directories without -U */
1641 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1653 APPLY_TAINT_PROPER();
1654 if (sp - mark > 2) {
1655 #if defined(I_UTIME) || defined(VMS)
1656 struct utimbuf utbuf;
1664 Zero(&utbuf, sizeof utbuf, char);
1666 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1667 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1669 utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */
1670 utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */
1672 APPLY_TAINT_PROPER();
1674 while (++mark <= sp) {
1675 char *name = SvPVx(*mark, n_a);
1676 APPLY_TAINT_PROPER();
1677 if (PerlLIO_utime(name, &utbuf))
1688 #undef APPLY_TAINT_PROPER
1691 /* Do the permissions allow some operation? Assumes statcache already set. */
1692 #ifndef VMS /* VMS' cando is in vms.c */
1694 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1695 /* Note: we use `effective' both for uids and gids.
1696 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1699 /* [Comments and code from Len Reed]
1700 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1701 * to write-protected files. The execute permission bit is set
1702 * by the Miscrosoft C library stat() function for the following:
1707 * All files and directories are readable.
1708 * Directories and special files, e.g. "CON", cannot be
1710 * [Comment by Tom Dinger -- a directory can have the write-protect
1711 * bit set in the file system, but DOS permits changes to
1712 * the directory anyway. In addition, all bets are off
1713 * here for networked software, such as Novell and
1717 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1718 * too so it will actually look into the files for magic numbers
1720 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1722 #else /* ! DOSISH */
1723 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1724 if (mode == S_IXUSR) {
1725 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1729 return TRUE; /* root reads and writes anything */
1732 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1733 if (statbufp->st_mode & mode)
1734 return TRUE; /* ok as "user" */
1736 else if (ingroup(statbufp->st_gid,effective)) {
1737 if (statbufp->st_mode & mode >> 3)
1738 return TRUE; /* ok as "group" */
1740 else if (statbufp->st_mode & mode >> 6)
1741 return TRUE; /* ok as "other" */
1743 #endif /* ! DOSISH */
1748 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1750 #ifdef MACOS_TRADITIONAL
1751 /* This is simply not correct for AppleShare, but fix it yerself. */
1754 if (testgid == (effective ? PL_egid : PL_gid))
1756 #ifdef HAS_GETGROUPS
1761 Groups_t gary[NGROUPS];
1764 anum = getgroups(NGROUPS,gary);
1766 if (gary[anum] == testgid)
1774 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1777 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1783 key = (key_t)SvNVx(*++mark);
1784 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1785 flags = SvIVx(*++mark);
1791 return msgget(key, flags);
1795 return semget(key, n, flags);
1799 return shmget(key, n, flags);
1801 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1803 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1806 return -1; /* should never happen */
1810 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1815 I32 id, n, cmd, infosize, getinfo;
1818 id = SvIVx(*++mark);
1819 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1820 cmd = SvIVx(*++mark);
1823 getinfo = (cmd == IPC_STAT);
1829 if (cmd == IPC_STAT || cmd == IPC_SET)
1830 infosize = sizeof(struct msqid_ds);
1835 if (cmd == IPC_STAT || cmd == IPC_SET)
1836 infosize = sizeof(struct shmid_ds);
1842 if (cmd == IPC_STAT || cmd == IPC_SET)
1843 infosize = sizeof(struct semid_ds);
1844 else if (cmd == GETALL || cmd == SETALL)
1846 struct semid_ds semds;
1848 #ifdef EXTRA_F_IN_SEMUN_BUF
1849 semun.buff = &semds;
1853 getinfo = (cmd == GETALL);
1854 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1856 infosize = semds.sem_nsems * sizeof(short);
1857 /* "short" is technically wrong but much more portable
1858 than guessing about u_?short(_t)? */
1861 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1865 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1867 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1876 SvPV_force(astr, len);
1877 a = SvGROW(astr, infosize+1);
1881 a = SvPV(astr, len);
1882 if (len != infosize)
1883 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1892 a = INT2PTR(char *,i); /* ouch */
1899 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1905 union semun unsemds;
1907 #ifdef EXTRA_F_IN_SEMUN_BUF
1908 unsemds.buff = (struct semid_ds *)a;
1910 unsemds.buf = (struct semid_ds *)a;
1912 ret = Semctl(id, n, cmd, unsemds);
1914 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1921 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1925 if (getinfo && ret >= 0) {
1926 SvCUR_set(astr, infosize);
1927 *SvEND(astr) = '\0';
1934 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1940 I32 id, msize, flags;
1943 id = SvIVx(*++mark);
1945 flags = SvIVx(*++mark);
1946 mbuf = SvPV(mstr, len);
1947 if ((msize = len - sizeof(long)) < 0)
1948 Perl_croak(aTHX_ "Arg too short for msgsnd");
1950 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1952 Perl_croak(aTHX_ "msgsnd not implemented");
1957 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1964 I32 id, msize, flags, ret;
1967 id = SvIVx(*++mark);
1969 /* suppress warning when reading into undef var --jhi */
1971 sv_setpvn(mstr, "", 0);
1972 msize = SvIVx(*++mark);
1973 mtype = (long)SvIVx(*++mark);
1974 flags = SvIVx(*++mark);
1975 SvPV_force(mstr, len);
1976 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1979 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1981 SvCUR_set(mstr, sizeof(long)+ret);
1982 *SvEND(mstr) = '\0';
1983 #ifndef INCOMPLETE_TAINTS
1984 /* who knows who has been playing with this message? */
1990 Perl_croak(aTHX_ "msgrcv not implemented");
1995 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2004 id = SvIVx(*++mark);
2006 opbuf = SvPV(opstr, opsize);
2007 if (opsize < sizeof(struct sembuf)
2008 || (opsize % sizeof(struct sembuf)) != 0) {
2009 SETERRNO(EINVAL,LIB$_INVARG);
2013 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
2015 Perl_croak(aTHX_ "semop not implemented");
2020 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2026 I32 id, mpos, msize;
2028 struct shmid_ds shmds;
2030 id = SvIVx(*++mark);
2032 mpos = SvIVx(*++mark);
2033 msize = SvIVx(*++mark);
2035 if (shmctl(id, IPC_STAT, &shmds) == -1)
2037 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2038 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2041 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2042 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2044 if (optype == OP_SHMREAD) {
2045 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2047 sv_setpvn(mstr, "", 0);
2048 SvPV_force(mstr, len);
2049 mbuf = SvGROW(mstr, msize+1);
2051 Copy(shm + mpos, mbuf, msize, char);
2052 SvCUR_set(mstr, msize);
2053 *SvEND(mstr) = '\0';
2055 #ifndef INCOMPLETE_TAINTS
2056 /* who knows who has been playing with this shared memory? */
2063 mbuf = SvPV(mstr, len);
2064 if ((n = len) > msize)
2066 Copy(mbuf, shm + mpos, n, char);
2068 memzero(shm + mpos + n, msize - n);
2072 Perl_croak(aTHX_ "shm I/O not implemented");
2076 #endif /* SYSV IPC */