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. */
59 #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */
60 # include <sys/socket.h>
61 # if defined(USE_SOCKS) && defined(I_SOCKS)
69 # include <net/errno.h>
75 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
76 int rawmode, int rawperm, PerlIO *supplied_fp)
78 return do_open9(gv, name, len, as_raw, rawmode, rawperm,
79 supplied_fp, Nullsv, 0);
83 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
84 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
87 register IO *io = GvIOn(gv);
88 PerlIO *saveifp = Nullfp;
89 PerlIO *saveofp = Nullfp;
90 char savetype = IoTYPE_CLOSED;
95 bool was_fdopen = FALSE;
96 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
98 PL_forkprocess = 1; /* assume true if no fork */
100 if (PL_op && PL_op->op_type == OP_OPEN) {
101 /* set up disciplines */
102 U8 flags = PL_op->op_private;
103 in_raw = (flags & OPpOPEN_IN_RAW);
104 in_crlf = (flags & OPpOPEN_IN_CRLF);
105 out_raw = (flags & OPpOPEN_OUT_RAW);
106 out_crlf = (flags & OPpOPEN_OUT_CRLF);
110 fd = PerlIO_fileno(IoIFP(io));
111 if (IoTYPE(io) == IoTYPE_STD)
113 else if (fd <= PL_maxsysfd) {
116 savetype = IoTYPE(io);
119 else if (IoTYPE(io) == IoTYPE_PIPE)
120 result = PerlProc_pclose(IoIFP(io));
121 else if (IoIFP(io) != IoOFP(io)) {
123 result = PerlIO_close(IoOFP(io));
124 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
127 result = PerlIO_close(IoIFP(io));
130 result = PerlIO_close(IoIFP(io));
131 if (result == EOF && fd > PL_maxsysfd)
132 PerlIO_printf(Perl_error_log,
133 "Warning: unable to close filehandle %s properly.\n",
135 IoOFP(io) = IoIFP(io) = Nullfp;
139 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
140 rawmode |= O_LARGEFILE;
144 #define O_ACCMODE 3 /* Assume traditional implementation */
147 switch (result = rawmode & O_ACCMODE) {
149 IoTYPE(io) = IoTYPE_RDONLY;
152 IoTYPE(io) = IoTYPE_WRONLY;
156 IoTYPE(io) = IoTYPE_RDWR;
160 writing = (result > 0);
161 fd = PerlLIO_open3(name, rawmode, rawperm);
168 if (result == O_RDONLY)
171 else if (rawmode & O_APPEND) {
173 if (result != O_WRONLY)
178 if (result == O_WRONLY)
185 if (rawmode & O_BINARY)
188 fp = PerlIO_fdopen(fd, fpmode);
198 char mode[4]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
201 type = savepvn(name, len);
206 name = SvPV(svs, l) ;
208 name = savepvn(name, len);
212 while (tlen && isSPACE(type[tlen-1]))
217 mode[0] = mode[1] = mode[2] = mode[3] = '\0';
219 if (*type == IoTYPE_RDWR && tlen > 1 && type[tlen-1] != IoTYPE_PIPE) { /* scary */
225 if (*type == IoTYPE_PIPE) {
226 if (num_svs && (tlen != 2 || type[1] != IoTYPE_STD)) {
228 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
231 for (type++, tlen--; isSPACE(*type); type++, tlen--) ;
236 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 (name[len-1] == '|') {
249 if (ckWARN(WARN_PIPE))
250 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
260 fp = PerlProc_popen(name,mode);
264 else if (*type == IoTYPE_WRONLY) {
265 TAINT_PROPER("open");
267 if (*type == IoTYPE_WRONLY) {
268 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
269 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
282 if (num_svs && tlen != 1)
293 if (!*name && supplied_fp)
297 for (; isSPACE(*name); name++) ;
302 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
306 SETERRNO(EINVAL,SS$_IVCHAN);
311 PerlIO *fp = IoIFP(thatio);
312 /* Flush stdio buffer before dup. --mjd
313 * Unfortunately SEEK_CURing 0 seems to
314 * be optimized away on most platforms;
315 * only Solaris and Linux seem to flush
317 PerlIO_seek(fp, 0, SEEK_CUR);
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]) {
353 fp = PerlIO_stdout();
354 IoTYPE(io) = IoTYPE_STD;
357 fp = PerlIO_open((num_svs ? name : type), mode);
361 else if (*type == IoTYPE_RDONLY) {
362 if (num_svs && tlen != 1)
365 for (type++; isSPACE(*type); type++) ;
376 if (*type == IoTYPE_STD && !type[1]) {
378 IoTYPE(io) = IoTYPE_STD;
381 fp = PerlIO_open((num_svs ? name : type), mode);
383 else if (tlen > 1 && type[tlen-1] == IoTYPE_PIPE) {
385 if (tlen != 2 || type[0] != IoTYPE_STD)
390 while (tlen && isSPACE(type[tlen-1]))
393 for (; isSPACE(*type); type++) ;
396 if (*name == '\0') { /* command is missing 19990114 */
398 if (ckWARN(WARN_PIPE))
399 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
403 if (strNE(name,"-") || num_svs)
405 TAINT_PROPER("piped open");
414 fp = PerlProc_popen(name,mode);
416 IoTYPE(io) = IoTYPE_PIPE;
422 IoTYPE(io) = IoTYPE_RDONLY;
424 for (; isSPACE(*name); name++) ;
425 if (strEQ(name,"-")) {
427 IoTYPE(io) = IoTYPE_STD;
437 fp = PerlIO_open(name,mode);
443 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
444 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
448 IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD) {
450 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
451 (void)PerlIO_close(fp);
454 if (S_ISSOCK(PL_statbuf.st_mode))
455 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
459 !(PL_statbuf.st_mode & S_IFMT)
463 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
464 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
465 ) { /* on OS's that return 0 on fstat()ed pipe */
467 Sock_size_t buflen = sizeof tmpbuf;
468 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
470 || errno != ENOTSOCK)
471 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
472 /* but some return 0 for streams too, sigh */
476 if (saveifp) { /* must use old fp? */
477 fd = PerlIO_fileno(saveifp);
479 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
480 if (saveofp != saveifp) { /* was a socket? */
481 PerlIO_close(saveofp);
486 if (fd != PerlIO_fileno(fp)) {
490 PerlLIO_dup2(PerlIO_fileno(fp), fd);
492 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
493 (void)SvUPGRADE(sv, SVt_IV);
496 sv = *av_fetch(PL_fdpid,fd,TRUE);
498 (void)SvUPGRADE(sv, SVt_IV);
507 #if defined(HAS_FCNTL) && defined(F_SETFD)
509 int save_errno = errno;
510 fd = PerlIO_fileno(fp);
511 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
516 IoFLAGS(io) &= ~IOf_NOLINE;
519 if (IoTYPE(io) == IoTYPE_SOCKET
520 || (IoTYPE(io) == IoTYPE_WRONLY && S_ISCHR(PL_statbuf.st_mode)) )
530 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),mode))) {
544 IoTYPE(io) = savetype;
549 Perl_nextargv(pTHX_ register GV *gv)
552 #ifndef FLEXFILENAMES
561 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
562 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
563 IoFLAGS(io) &= ~IOf_START;
565 if (!PL_argvout_stack)
566 PL_argvout_stack = newAV();
567 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
570 if (PL_filemode & (S_ISUID|S_ISGID)) {
571 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
573 (void)fchmod(PL_lastfd,PL_filemode);
575 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
579 while (av_len(GvAV(gv)) >= 0) {
582 sv = av_shift(GvAV(gv));
584 sv_setsv(GvSV(gv),sv);
585 SvSETMAGIC(GvSV(gv));
586 PL_oldname = SvPVx(GvSV(gv), oldlen);
587 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
589 TAINT_PROPER("inplace open");
590 if (oldlen == 1 && *PL_oldname == '-') {
591 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
592 return IoIFP(GvIOp(gv));
594 #ifndef FLEXFILENAMES
595 filedev = PL_statbuf.st_dev;
596 fileino = PL_statbuf.st_ino;
598 PL_filemode = PL_statbuf.st_mode;
599 fileuid = PL_statbuf.st_uid;
600 filegid = PL_statbuf.st_gid;
601 if (!S_ISREG(PL_filemode)) {
602 if (ckWARN_d(WARN_INPLACE))
603 Perl_warner(aTHX_ WARN_INPLACE,
604 "Can't do inplace edit: %s is not a regular file",
610 char *star = strchr(PL_inplace, '*');
612 char *begin = PL_inplace;
613 sv_setpvn(sv, "", 0);
615 sv_catpvn(sv, begin, star - begin);
616 sv_catpvn(sv, PL_oldname, oldlen);
618 } while ((star = strchr(begin, '*')));
623 sv_catpv(sv,PL_inplace);
625 #ifndef FLEXFILENAMES
626 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
627 && PL_statbuf.st_dev == filedev
628 && PL_statbuf.st_ino == fileino
630 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
634 if (ckWARN_d(WARN_INPLACE))
635 Perl_warner(aTHX_ WARN_INPLACE,
636 "Can't do inplace edit: %s would not be unique",
643 #if !defined(DOSISH) && !defined(__CYGWIN__)
644 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
645 if (ckWARN_d(WARN_INPLACE))
646 Perl_warner(aTHX_ WARN_INPLACE,
647 "Can't rename %s to %s: %s, skipping file",
648 PL_oldname, SvPVX(sv), Strerror(errno) );
654 (void)PerlLIO_unlink(SvPVX(sv));
655 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
656 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
659 (void)UNLINK(SvPVX(sv));
660 if (link(PL_oldname,SvPVX(sv)) < 0) {
661 if (ckWARN_d(WARN_INPLACE))
662 Perl_warner(aTHX_ WARN_INPLACE,
663 "Can't rename %s to %s: %s, skipping file",
664 PL_oldname, SvPVX(sv), Strerror(errno) );
668 (void)UNLINK(PL_oldname);
672 #if !defined(DOSISH) && !defined(AMIGAOS)
673 # ifndef VMS /* Don't delete; use automatic file versioning */
674 if (UNLINK(PL_oldname) < 0) {
675 if (ckWARN_d(WARN_INPLACE))
676 Perl_warner(aTHX_ WARN_INPLACE,
677 "Can't remove %s: %s, skipping file",
678 PL_oldname, Strerror(errno) );
684 Perl_croak(aTHX_ "Can't do inplace edit without backup");
688 sv_setpvn(sv,">",!PL_inplace);
689 sv_catpvn(sv,PL_oldname,oldlen);
690 SETERRNO(0,0); /* in case sprintf set errno */
692 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
693 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
695 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
696 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
699 if (ckWARN_d(WARN_INPLACE))
700 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
701 PL_oldname, Strerror(errno) );
705 setdefout(PL_argvoutgv);
706 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
707 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
709 (void)fchmod(PL_lastfd,PL_filemode);
711 # if !(defined(WIN32) && defined(__BORLANDC__))
712 /* Borland runtime creates a readonly file! */
713 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
716 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
718 (void)fchown(PL_lastfd,fileuid,filegid);
721 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
726 return IoIFP(GvIOp(gv));
730 if (ckWARN_d(WARN_INPLACE)) {
732 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
733 && !S_ISREG(PL_statbuf.st_mode))
735 Perl_warner(aTHX_ WARN_INPLACE,
736 "Can't do inplace edit: %s is not a regular file",
740 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
741 PL_oldname, Strerror(eno));
745 if (io && (IoFLAGS(io) & IOf_ARGV))
746 IoFLAGS(io) |= IOf_START;
748 (void)do_close(PL_argvoutgv,FALSE);
749 if (io && (IoFLAGS(io) & IOf_ARGV)
750 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
752 GV *oldout = (GV*)av_pop(PL_argvout_stack);
754 SvREFCNT_dec(oldout);
757 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
764 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
783 if (PerlProc_pipe(fd) < 0)
785 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
786 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
787 IoIFP(wstio) = IoOFP(wstio);
788 IoTYPE(rstio) = IoTYPE_RDONLY;
789 IoTYPE(wstio) = IoTYPE_WRONLY;
790 if (!IoIFP(rstio) || !IoOFP(wstio)) {
791 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
792 else PerlLIO_close(fd[0]);
793 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
794 else PerlLIO_close(fd[1]);
798 sv_setsv(sv,&PL_sv_yes);
802 sv_setsv(sv,&PL_sv_undef);
807 /* explicit renamed to avoid C++ conflict -- kja */
809 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
816 if (!gv || SvTYPE(gv) != SVt_PVGV) {
818 SETERRNO(EBADF,SS$_IVCHAN);
822 if (!io) { /* never opened */
825 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
826 report_evil_fh(gv, io, PL_op->op_type);
827 SETERRNO(EBADF,SS$_IVCHAN);
831 retval = io_close(io, not_implicit);
835 IoLINES_LEFT(io) = IoPAGE_LEN(io);
837 IoTYPE(io) = IoTYPE_CLOSED;
842 Perl_io_close(pTHX_ IO *io, bool not_implicit)
848 if (IoTYPE(io) == IoTYPE_PIPE) {
849 status = PerlProc_pclose(IoIFP(io));
851 STATUS_NATIVE_SET(status);
852 retval = (STATUS_POSIX == 0);
855 retval = (status != -1);
858 else if (IoTYPE(io) == IoTYPE_STD)
861 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
862 retval = (PerlIO_close(IoOFP(io)) != EOF);
863 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
866 retval = (PerlIO_close(IoIFP(io)) != EOF);
868 IoOFP(io) = IoIFP(io) = Nullfp;
870 else if (not_implicit) {
871 SETERRNO(EBADF,SS$_IVCHAN);
878 Perl_do_eof(pTHX_ GV *gv)
888 else if (ckWARN(WARN_IO)
889 && (IoTYPE(io) == IoTYPE_WRONLY || IoIFP(io) == PerlIO_stdout()
890 || IoIFP(io) == PerlIO_stderr()))
892 /* integrate to report_evil_fh()? */
895 SV* sv = sv_newmortal();
896 gv_efullname4(sv, gv, Nullch, FALSE);
897 name = SvPV_nolen(sv);
900 Perl_warner(aTHX_ WARN_IO,
901 "Filehandle %s opened only for output", name);
903 Perl_warner(aTHX_ WARN_IO,
904 "Filehandle opened only for output");
909 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
910 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
911 return FALSE; /* this is the most usual case */
914 ch = PerlIO_getc(IoIFP(io));
916 (void)PerlIO_ungetc(IoIFP(io),ch);
919 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
920 if (PerlIO_get_cnt(IoIFP(io)) < -1)
921 PerlIO_set_cnt(IoIFP(io),-1);
923 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
924 if (!nextargv(PL_argvgv)) /* get another fp handy */
928 return TRUE; /* normal fp, definitely end of file */
934 Perl_do_tell(pTHX_ GV *gv)
939 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
940 #ifdef ULTRIX_STDIO_BOTCH
942 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
944 return PerlIO_tell(fp);
948 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
949 report_evil_fh(gv, io, PL_op->op_type);
951 SETERRNO(EBADF,RMS$_IFI);
956 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
961 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
962 #ifdef ULTRIX_STDIO_BOTCH
964 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
966 return PerlIO_seek(fp, pos, whence) >= 0;
970 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
971 report_evil_fh(gv, io, PL_op->op_type);
973 SETERRNO(EBADF,RMS$_IFI);
978 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
983 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
984 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
987 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
988 report_evil_fh(gv, io, PL_op->op_type);
990 SETERRNO(EBADF,RMS$_IFI);
995 Perl_mode_from_discipline(pTHX_ SV *discp)
1000 char *s = SvPV(discp,len);
1005 if (len > 3 && strnEQ(s+1, "raw", 3)
1006 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1015 if (len > 4 && strnEQ(s+1, "crlf", 4)
1016 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1025 goto fail_discipline;
1028 else if (isSPACE(*s)) {
1035 end = strchr(s+1, ':');
1038 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1046 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1049 # if defined(atarist) || defined(__MINT__)
1050 if (!PerlIO_flush(fp)) {
1051 if (mode & O_BINARY)
1052 ((FILE*)fp)->_flag |= _IOBIN;
1054 ((FILE*)fp)->_flag &= ~ _IOBIN;
1059 if (PerlLIO_setmode(PerlIO_fileno(fp), mode) != -1) {
1060 # if defined(WIN32) && defined(__BORLANDC__)
1061 /* The translation mode of the stream is maintained independent
1062 * of the translation mode of the fd in the Borland RTL (heavy
1063 * digging through their runtime sources reveal). User has to
1064 * set the mode explicitly for the stream (though they don't
1065 * document this anywhere). GSAR 97-5-24
1067 PerlIO_seek(fp,0L,0);
1068 if (mode & O_BINARY)
1069 ((FILE*)fp)->flags |= _F_BIN;
1071 ((FILE*)fp)->flags &= ~ _F_BIN;
1079 # if defined(USEMYBINMODE)
1080 if (my_binmode(fp, iotype, mode) != FALSE)
1090 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1091 /* code courtesy of William Kucharski */
1094 I32 my_chsize(fd, length)
1095 I32 fd; /* file descriptor */
1096 Off_t length; /* length to set file to */
1099 struct stat filebuf;
1101 if (PerlLIO_fstat(fd, &filebuf) < 0)
1104 if (filebuf.st_size < length) {
1106 /* extend file length */
1108 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1111 /* write a "0" byte */
1113 if ((PerlLIO_write(fd, "", 1)) != 1)
1117 /* truncate length */
1121 fl.l_start = length;
1122 fl.l_type = F_WRLCK; /* write lock on file space */
1125 * This relies on the UNDOCUMENTED F_FREESP argument to
1126 * fcntl(2), which truncates the file so that it ends at the
1127 * position indicated by fl.l_start.
1129 * Will minor miracles never cease?
1132 if (fcntl(fd, F_FREESP, &fl) < 0)
1139 #endif /* F_FREESP */
1142 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1144 register char *tmps;
1147 /* assuming fp is checked earlier */
1153 if (SvIOK(sv) && SvIVX(sv) != 0) {
1154 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1155 return !PerlIO_error(fp);
1157 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1158 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1159 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1160 return !PerlIO_error(fp);
1163 switch (SvTYPE(sv)) {
1167 if (ckWARN(WARN_UNINITIALIZED))
1176 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1178 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1179 return !PerlIO_error(fp);
1183 tmps = SvPV(sv, len);
1186 /* To detect whether the process is about to overstep its
1187 * filesize limit we would need getrlimit(). We could then
1188 * also transparently raise the limit with setrlimit() --
1189 * but only until the system hard limit/the filesystem limit,
1190 * at which we would get EPERM. Note that when using buffered
1191 * io the write failure can be delayed until the flush/close. --jhi */
1192 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
1194 return !PerlIO_error(fp);
1204 if (PL_op->op_flags & OPf_REF) {
1209 if (io && IoIFP(io)) {
1211 sv_setpv(PL_statname,"");
1212 PL_laststype = OP_STAT;
1213 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1217 return PL_laststatval;
1218 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1219 report_evil_fh(gv, io, PL_op->op_type);
1221 sv_setpv(PL_statname,"");
1222 return (PL_laststatval = -1);
1230 if (SvTYPE(sv) == SVt_PVGV) {
1234 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1241 sv_setpv(PL_statname, s);
1242 PL_laststype = OP_STAT;
1243 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1244 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1245 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1246 return PL_laststatval;
1256 if (PL_op->op_flags & OPf_REF) {
1258 if (cGVOP_gv == PL_defgv) {
1259 if (PL_laststype != OP_LSTAT)
1260 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1261 return PL_laststatval;
1263 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1266 PL_laststype = OP_LSTAT;
1270 sv_setpv(PL_statname,SvPV(sv, n_a));
1271 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1272 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1273 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1274 return PL_laststatval;
1278 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1280 return do_aexec5(really, mark, sp, 0, 0);
1284 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1285 int fd, int do_report)
1287 #ifdef MACOS_TRADITIONAL
1288 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1296 New(401,PL_Argv, sp - mark + 1, char*);
1298 while (++mark <= sp) {
1300 *a++ = SvPVx(*mark, n_a);
1305 if (*PL_Argv[0] != '/') /* will execvp use PATH? */
1306 TAINT_ENV(); /* testing IFS here is overkill, probably */
1307 if (really && *(tmps = SvPV(really, n_a)))
1308 PerlProc_execvp(tmps,PL_Argv);
1310 PerlProc_execvp(PL_Argv[0],PL_Argv);
1311 if (ckWARN(WARN_EXEC))
1312 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1313 PL_Argv[0], Strerror(errno));
1317 PerlLIO_write(fd, (void*)&e, sizeof(int));
1327 Perl_do_execfree(pTHX)
1331 PL_Argv = Null(char **);
1339 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1342 Perl_do_exec(pTHX_ char *cmd)
1344 return do_exec3(cmd,0,0);
1348 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1354 while (*cmd && isSPACE(*cmd))
1357 /* save an extra exec if possible */
1360 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1362 s = cmd+PL_cshlen+3;
1376 if (s[-1] == '\'') {
1378 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1386 /* see if there are shell metacharacters in it */
1388 if (*cmd == '.' && isSPACE(cmd[1]))
1391 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1394 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1398 for (s = cmd; *s; s++) {
1399 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1400 if (*s == '\n' && !s[1]) {
1404 /* handle the 2>&1 construct at the end */
1405 if (*s == '>' && s[1] == '&' && s[2] == '1'
1406 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1407 && (!s[3] || isSPACE(s[3])))
1411 while (*t && isSPACE(*t))
1413 if (!*t && (dup2(1,2) != -1)) {
1419 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1424 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1425 PL_Cmd = savepvn(cmd, s-cmd);
1427 for (s = PL_Cmd; *s;) {
1428 while (*s && isSPACE(*s)) s++;
1431 while (*s && !isSPACE(*s)) s++;
1437 PerlProc_execvp(PL_Argv[0],PL_Argv);
1438 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1446 if (ckWARN(WARN_EXEC))
1447 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1448 PL_Argv[0], Strerror(errno));
1450 PerlLIO_write(fd, (void*)&e, sizeof(int));
1459 #endif /* OS2 || WIN32 */
1462 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1467 register I32 tot = 0;
1470 SV **oldmark = mark;
1473 #define APPLY_TAINT_PROPER() \
1475 if (PL_tainted) { TAINT_PROPER(what); } \
1478 /* This is a first heuristic; it doesn't catch tainting magic. */
1480 while (++mark <= sp) {
1481 if (SvTAINTED(*mark)) {
1491 APPLY_TAINT_PROPER();
1494 APPLY_TAINT_PROPER();
1496 while (++mark <= sp) {
1497 char *name = SvPVx(*mark, n_a);
1498 APPLY_TAINT_PROPER();
1499 if (PerlLIO_chmod(name, val))
1507 APPLY_TAINT_PROPER();
1508 if (sp - mark > 2) {
1509 val = SvIVx(*++mark);
1510 val2 = SvIVx(*++mark);
1511 APPLY_TAINT_PROPER();
1513 while (++mark <= sp) {
1514 char *name = SvPVx(*mark, n_a);
1515 APPLY_TAINT_PROPER();
1516 if (PerlLIO_chown(name, val, val2))
1523 XXX Should we make lchown() directly available from perl?
1524 For now, we'll let Configure test for HAS_LCHOWN, but do
1525 nothing in the core.
1531 APPLY_TAINT_PROPER();
1534 s = SvPVx(*++mark, n_a);
1536 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1538 if (!(val = whichsig(s)))
1539 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1543 APPLY_TAINT_PROPER();
1546 /* kill() doesn't do process groups (job trees?) under VMS */
1547 if (val < 0) val = -val;
1548 if (val == SIGKILL) {
1549 # include <starlet.h>
1550 /* Use native sys$delprc() to insure that target process is
1551 * deleted; supervisor-mode images don't pay attention to
1552 * CRTL's emulation of Unix-style signals and kill()
1554 while (++mark <= sp) {
1555 I32 proc = SvIVx(*mark);
1556 register unsigned long int __vmssts;
1557 APPLY_TAINT_PROPER();
1558 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1562 case SS$_NOSUCHNODE:
1563 SETERRNO(ESRCH,__vmssts);
1566 SETERRNO(EPERM,__vmssts);
1569 SETERRNO(EVMSERR,__vmssts);
1578 while (++mark <= sp) {
1579 I32 proc = SvIVx(*mark);
1580 APPLY_TAINT_PROPER();
1582 if (PerlProc_killpg(proc,val)) /* BSD */
1584 if (PerlProc_kill(-proc,val)) /* SYSV */
1590 while (++mark <= sp) {
1591 I32 proc = SvIVx(*mark);
1592 APPLY_TAINT_PROPER();
1593 if (PerlProc_kill(proc, val))
1601 APPLY_TAINT_PROPER();
1603 while (++mark <= sp) {
1604 s = SvPVx(*mark, n_a);
1605 APPLY_TAINT_PROPER();
1606 if (PL_euid || PL_unsafe) {
1610 else { /* don't let root wipe out directories without -U */
1611 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1623 APPLY_TAINT_PROPER();
1624 if (sp - mark > 2) {
1625 #if defined(I_UTIME) || defined(VMS)
1626 struct utimbuf utbuf;
1634 Zero(&utbuf, sizeof utbuf, char);
1636 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1637 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1639 utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */
1640 utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */
1642 APPLY_TAINT_PROPER();
1644 while (++mark <= sp) {
1645 char *name = SvPVx(*mark, n_a);
1646 APPLY_TAINT_PROPER();
1647 if (PerlLIO_utime(name, &utbuf))
1658 #undef APPLY_TAINT_PROPER
1661 /* Do the permissions allow some operation? Assumes statcache already set. */
1662 #ifndef VMS /* VMS' cando is in vms.c */
1664 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1665 /* Note: we use `effective' both for uids and gids.
1666 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1669 /* [Comments and code from Len Reed]
1670 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1671 * to write-protected files. The execute permission bit is set
1672 * by the Miscrosoft C library stat() function for the following:
1677 * All files and directories are readable.
1678 * Directories and special files, e.g. "CON", cannot be
1680 * [Comment by Tom Dinger -- a directory can have the write-protect
1681 * bit set in the file system, but DOS permits changes to
1682 * the directory anyway. In addition, all bets are off
1683 * here for networked software, such as Novell and
1687 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1688 * too so it will actually look into the files for magic numbers
1690 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1692 #else /* ! DOSISH */
1693 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1694 if (mode == S_IXUSR) {
1695 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1699 return TRUE; /* root reads and writes anything */
1702 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1703 if (statbufp->st_mode & mode)
1704 return TRUE; /* ok as "user" */
1706 else if (ingroup(statbufp->st_gid,effective)) {
1707 if (statbufp->st_mode & mode >> 3)
1708 return TRUE; /* ok as "group" */
1710 else if (statbufp->st_mode & mode >> 6)
1711 return TRUE; /* ok as "other" */
1713 #endif /* ! DOSISH */
1718 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1720 #ifdef MACOS_TRADITIONAL
1721 /* This is simply not correct for AppleShare, but fix it yerself. */
1724 if (testgid == (effective ? PL_egid : PL_gid))
1726 #ifdef HAS_GETGROUPS
1731 Groups_t gary[NGROUPS];
1734 anum = getgroups(NGROUPS,gary);
1736 if (gary[anum] == testgid)
1744 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1747 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1753 key = (key_t)SvNVx(*++mark);
1754 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1755 flags = SvIVx(*++mark);
1761 return msgget(key, flags);
1765 return semget(key, n, flags);
1769 return shmget(key, n, flags);
1771 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1773 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1776 return -1; /* should never happen */
1780 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1785 I32 id, n, cmd, infosize, getinfo;
1788 id = SvIVx(*++mark);
1789 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1790 cmd = SvIVx(*++mark);
1793 getinfo = (cmd == IPC_STAT);
1799 if (cmd == IPC_STAT || cmd == IPC_SET)
1800 infosize = sizeof(struct msqid_ds);
1805 if (cmd == IPC_STAT || cmd == IPC_SET)
1806 infosize = sizeof(struct shmid_ds);
1812 if (cmd == IPC_STAT || cmd == IPC_SET)
1813 infosize = sizeof(struct semid_ds);
1814 else if (cmd == GETALL || cmd == SETALL)
1816 struct semid_ds semds;
1818 #ifdef EXTRA_F_IN_SEMUN_BUF
1819 semun.buff = &semds;
1823 getinfo = (cmd == GETALL);
1824 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1826 infosize = semds.sem_nsems * sizeof(short);
1827 /* "short" is technically wrong but much more portable
1828 than guessing about u_?short(_t)? */
1831 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1835 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1837 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1846 SvPV_force(astr, len);
1847 a = SvGROW(astr, infosize+1);
1851 a = SvPV(astr, len);
1852 if (len != infosize)
1853 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1862 a = INT2PTR(char *,i); /* ouch */
1869 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1875 union semun unsemds;
1877 #ifdef EXTRA_F_IN_SEMUN_BUF
1878 unsemds.buff = (struct semid_ds *)a;
1880 unsemds.buf = (struct semid_ds *)a;
1882 ret = Semctl(id, n, cmd, unsemds);
1884 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1891 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1895 if (getinfo && ret >= 0) {
1896 SvCUR_set(astr, infosize);
1897 *SvEND(astr) = '\0';
1904 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1910 I32 id, msize, flags;
1913 id = SvIVx(*++mark);
1915 flags = SvIVx(*++mark);
1916 mbuf = SvPV(mstr, len);
1917 if ((msize = len - sizeof(long)) < 0)
1918 Perl_croak(aTHX_ "Arg too short for msgsnd");
1920 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1922 Perl_croak(aTHX_ "msgsnd not implemented");
1927 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1934 I32 id, msize, flags, ret;
1937 id = SvIVx(*++mark);
1939 /* suppress warning when reading into undef var --jhi */
1941 sv_setpvn(mstr, "", 0);
1942 msize = SvIVx(*++mark);
1943 mtype = (long)SvIVx(*++mark);
1944 flags = SvIVx(*++mark);
1945 SvPV_force(mstr, len);
1946 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1949 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1951 SvCUR_set(mstr, sizeof(long)+ret);
1952 *SvEND(mstr) = '\0';
1953 #ifndef INCOMPLETE_TAINTS
1954 /* who knows who has been playing with this message? */
1960 Perl_croak(aTHX_ "msgrcv not implemented");
1965 Perl_do_semop(pTHX_ SV **mark, SV **sp)
1974 id = SvIVx(*++mark);
1976 opbuf = SvPV(opstr, opsize);
1977 if (opsize < sizeof(struct sembuf)
1978 || (opsize % sizeof(struct sembuf)) != 0) {
1979 SETERRNO(EINVAL,LIB$_INVARG);
1983 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1985 Perl_croak(aTHX_ "semop not implemented");
1990 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
1996 I32 id, mpos, msize;
1998 struct shmid_ds shmds;
2000 id = SvIVx(*++mark);
2002 mpos = SvIVx(*++mark);
2003 msize = SvIVx(*++mark);
2005 if (shmctl(id, IPC_STAT, &shmds) == -1)
2007 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2008 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2011 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2012 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2014 if (optype == OP_SHMREAD) {
2015 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2017 sv_setpvn(mstr, "", 0);
2018 SvPV_force(mstr, len);
2019 mbuf = SvGROW(mstr, msize+1);
2021 Copy(shm + mpos, mbuf, msize, char);
2022 SvCUR_set(mstr, msize);
2023 *SvEND(mstr) = '\0';
2025 #ifndef INCOMPLETE_TAINTS
2026 /* who knows who has been playing with this shared memory? */
2033 mbuf = SvPV(mstr, len);
2034 if ((n = len) > msize)
2036 Copy(mbuf, shm + mpos, n, char);
2038 memzero(shm + mpos + n, msize - n);
2042 Perl_croak(aTHX_ "shm I/O not implemented");
2046 #endif /* SYSV IPC */