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)
62 # if !defined(INCLUDE_PROTOTYPES)
63 # define INCLUDE_PROTOTYPES /* for <socks.h> */
64 # define PERL_SOCKS_NEED_PROTOTYPES
67 # ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
68 # undef INCLUDE_PROTOTYPES
69 # undef PERL_SOCKS_NEED_PROTOTYPES
77 # include <net/errno.h>
83 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
84 int rawmode, int rawperm, PerlIO *supplied_fp)
86 return do_open9(gv, name, len, as_raw, rawmode, rawperm,
87 supplied_fp, Nullsv, 0);
91 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
92 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
95 register IO *io = GvIOn(gv);
96 PerlIO *saveifp = Nullfp;
97 PerlIO *saveofp = Nullfp;
98 char savetype = IoTYPE_CLOSED;
103 bool was_fdopen = FALSE;
104 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
106 PL_forkprocess = 1; /* assume true if no fork */
108 if (PL_op && PL_op->op_type == OP_OPEN) {
109 /* set up disciplines */
110 U8 flags = PL_op->op_private;
111 in_raw = (flags & OPpOPEN_IN_RAW);
112 in_crlf = (flags & OPpOPEN_IN_CRLF);
113 out_raw = (flags & OPpOPEN_OUT_RAW);
114 out_crlf = (flags & OPpOPEN_OUT_CRLF);
118 fd = PerlIO_fileno(IoIFP(io));
119 if (IoTYPE(io) == IoTYPE_STD)
121 else if (fd <= PL_maxsysfd) {
124 savetype = IoTYPE(io);
127 else if (IoTYPE(io) == IoTYPE_PIPE)
128 result = PerlProc_pclose(IoIFP(io));
129 else if (IoIFP(io) != IoOFP(io)) {
131 result = PerlIO_close(IoOFP(io));
132 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
135 result = PerlIO_close(IoIFP(io));
138 result = PerlIO_close(IoIFP(io));
139 if (result == EOF && fd > PL_maxsysfd)
140 PerlIO_printf(Perl_error_log,
141 "Warning: unable to close filehandle %s properly.\n",
143 IoOFP(io) = IoIFP(io) = Nullfp;
147 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
148 rawmode |= O_LARGEFILE;
152 #define O_ACCMODE 3 /* Assume traditional implementation */
155 switch (result = rawmode & O_ACCMODE) {
157 IoTYPE(io) = IoTYPE_RDONLY;
160 IoTYPE(io) = IoTYPE_WRONLY;
164 IoTYPE(io) = IoTYPE_RDWR;
168 writing = (result > 0);
169 fd = PerlLIO_open3(name, rawmode, rawperm);
176 if (result == O_RDONLY)
179 else if (rawmode & O_APPEND) {
181 if (result != O_WRONLY)
186 if (result == O_WRONLY)
193 if (rawmode & O_BINARY)
196 fp = PerlIO_fdopen(fd, fpmode);
206 char mode[4]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
209 type = savepvn(name, len);
214 name = SvPV(svs, l) ;
216 name = savepvn(name, len);
220 while (tlen && isSPACE(type[tlen-1]))
225 mode[0] = mode[1] = mode[2] = mode[3] = '\0';
227 if (*type == IoTYPE_RDWR && tlen > 1 && type[tlen-1] != IoTYPE_PIPE) { /* scary */
233 if (*type == IoTYPE_PIPE) {
234 if (num_svs && (tlen != 2 || type[1] != IoTYPE_STD)) {
236 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
239 for (type++, tlen--; isSPACE(*type); type++, tlen--) ;
244 if (*name == '\0') { /* command is missing 19990114 */
246 if (ckWARN(WARN_PIPE))
247 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
251 if (strNE(name,"-") || num_svs)
253 TAINT_PROPER("piped open");
254 if (name[len-1] == '|') {
257 if (ckWARN(WARN_PIPE))
258 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
268 fp = PerlProc_popen(name,mode);
272 else if (*type == IoTYPE_WRONLY) {
273 TAINT_PROPER("open");
275 if (*type == IoTYPE_WRONLY) {
276 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
277 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
290 if (num_svs && tlen != 1)
301 if (!*name && supplied_fp)
305 for (; isSPACE(*name); name++) ;
310 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
314 SETERRNO(EINVAL,SS$_IVCHAN);
319 PerlIO *fp = IoIFP(thatio);
320 /* Flush stdio buffer before dup. --mjd
321 * Unfortunately SEEK_CURing 0 seems to
322 * be optimized away on most platforms;
323 * only Solaris and Linux seem to flush
326 /* sfio fails to clear error on next
327 sfwrite, contrary to documentation.
329 if (PerlIO_seek(fp, 0, SEEK_CUR) == -1)
332 /* On the other hand, do all platforms
333 * take gracefully to flushing a read-only
334 * filehandle? Perhaps we should do
335 * fsetpos(src)+fgetpos(dst)? --nik */
337 fd = PerlIO_fileno(fp);
338 /* When dup()ing STDIN, STDOUT or STDERR
339 * explicitly set appropriate access mode */
340 if (IoIFP(thatio) == PerlIO_stdout()
341 || IoIFP(thatio) == PerlIO_stderr())
342 IoTYPE(io) = IoTYPE_WRONLY;
343 else if (IoIFP(thatio) == PerlIO_stdin())
344 IoTYPE(io) = IoTYPE_RDONLY;
345 /* When dup()ing a socket, say result is
347 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
348 IoTYPE(io) = IoTYPE_SOCKET;
354 fd = PerlLIO_dup(fd);
357 if (!(fp = PerlIO_fdopen(fd,mode))) {
365 for (; isSPACE(*type); type++) ;
366 if (*type == IoTYPE_STD && !type[1]) {
367 fp = PerlIO_stdout();
368 IoTYPE(io) = IoTYPE_STD;
371 fp = PerlIO_open((num_svs ? name : type), mode);
375 else if (*type == IoTYPE_RDONLY) {
376 if (num_svs && tlen != 1)
379 for (type++; isSPACE(*type); type++) ;
390 if (*type == IoTYPE_STD && !type[1]) {
392 IoTYPE(io) = IoTYPE_STD;
395 fp = PerlIO_open((num_svs ? name : type), mode);
397 else if (tlen > 1 && type[tlen-1] == IoTYPE_PIPE) {
399 if (tlen != 2 || type[0] != IoTYPE_STD)
404 while (tlen && isSPACE(type[tlen-1]))
407 for (; isSPACE(*type); type++) ;
410 if (*name == '\0') { /* command is missing 19990114 */
412 if (ckWARN(WARN_PIPE))
413 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
417 if (strNE(name,"-") || num_svs)
419 TAINT_PROPER("piped open");
428 fp = PerlProc_popen(name,mode);
430 IoTYPE(io) = IoTYPE_PIPE;
436 IoTYPE(io) = IoTYPE_RDONLY;
438 for (; isSPACE(*name); name++) ;
439 if (strEQ(name,"-")) {
441 IoTYPE(io) = IoTYPE_STD;
451 fp = PerlIO_open(name,mode);
457 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
458 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
462 IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD) {
464 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
465 (void)PerlIO_close(fp);
468 if (S_ISSOCK(PL_statbuf.st_mode))
469 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
473 !(PL_statbuf.st_mode & S_IFMT)
477 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
478 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
479 ) { /* on OS's that return 0 on fstat()ed pipe */
481 Sock_size_t buflen = sizeof tmpbuf;
482 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
484 || errno != ENOTSOCK)
485 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
486 /* but some return 0 for streams too, sigh */
490 if (saveifp) { /* must use old fp? */
491 fd = PerlIO_fileno(saveifp);
493 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
494 if (saveofp != saveifp) { /* was a socket? */
495 PerlIO_close(saveofp);
500 if (fd != PerlIO_fileno(fp)) {
504 PerlLIO_dup2(PerlIO_fileno(fp), fd);
506 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
507 (void)SvUPGRADE(sv, SVt_IV);
510 sv = *av_fetch(PL_fdpid,fd,TRUE);
512 (void)SvUPGRADE(sv, SVt_IV);
521 #if defined(HAS_FCNTL) && defined(F_SETFD)
523 int save_errno = errno;
524 fd = PerlIO_fileno(fp);
525 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
530 IoFLAGS(io) &= ~IOf_NOLINE;
533 if (IoTYPE(io) == IoTYPE_SOCKET
534 || (IoTYPE(io) == IoTYPE_WRONLY && S_ISCHR(PL_statbuf.st_mode)) )
544 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),mode))) {
558 IoTYPE(io) = savetype;
563 Perl_nextargv(pTHX_ register GV *gv)
566 #ifndef FLEXFILENAMES
575 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
576 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
577 IoFLAGS(io) &= ~IOf_START;
579 if (!PL_argvout_stack)
580 PL_argvout_stack = newAV();
581 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
584 if (PL_filemode & (S_ISUID|S_ISGID)) {
585 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
587 (void)fchmod(PL_lastfd,PL_filemode);
589 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
593 while (av_len(GvAV(gv)) >= 0) {
596 sv = av_shift(GvAV(gv));
598 sv_setsv(GvSV(gv),sv);
599 SvSETMAGIC(GvSV(gv));
600 PL_oldname = SvPVx(GvSV(gv), oldlen);
601 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
603 TAINT_PROPER("inplace open");
604 if (oldlen == 1 && *PL_oldname == '-') {
605 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
606 return IoIFP(GvIOp(gv));
608 #ifndef FLEXFILENAMES
609 filedev = PL_statbuf.st_dev;
610 fileino = PL_statbuf.st_ino;
612 PL_filemode = PL_statbuf.st_mode;
613 fileuid = PL_statbuf.st_uid;
614 filegid = PL_statbuf.st_gid;
615 if (!S_ISREG(PL_filemode)) {
616 if (ckWARN_d(WARN_INPLACE))
617 Perl_warner(aTHX_ WARN_INPLACE,
618 "Can't do inplace edit: %s is not a regular file",
624 char *star = strchr(PL_inplace, '*');
626 char *begin = PL_inplace;
627 sv_setpvn(sv, "", 0);
629 sv_catpvn(sv, begin, star - begin);
630 sv_catpvn(sv, PL_oldname, oldlen);
632 } while ((star = strchr(begin, '*')));
637 sv_catpv(sv,PL_inplace);
639 #ifndef FLEXFILENAMES
640 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
641 && PL_statbuf.st_dev == filedev
642 && PL_statbuf.st_ino == fileino
644 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
648 if (ckWARN_d(WARN_INPLACE))
649 Perl_warner(aTHX_ WARN_INPLACE,
650 "Can't do inplace edit: %s would not be unique",
657 #if !defined(DOSISH) && !defined(__CYGWIN__)
658 if (PerlLIO_rename(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) );
668 (void)PerlLIO_unlink(SvPVX(sv));
669 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
670 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
673 (void)UNLINK(SvPVX(sv));
674 if (link(PL_oldname,SvPVX(sv)) < 0) {
675 if (ckWARN_d(WARN_INPLACE))
676 Perl_warner(aTHX_ WARN_INPLACE,
677 "Can't rename %s to %s: %s, skipping file",
678 PL_oldname, SvPVX(sv), Strerror(errno) );
682 (void)UNLINK(PL_oldname);
686 #if !defined(DOSISH) && !defined(AMIGAOS)
687 # ifndef VMS /* Don't delete; use automatic file versioning */
688 if (UNLINK(PL_oldname) < 0) {
689 if (ckWARN_d(WARN_INPLACE))
690 Perl_warner(aTHX_ WARN_INPLACE,
691 "Can't remove %s: %s, skipping file",
692 PL_oldname, Strerror(errno) );
698 Perl_croak(aTHX_ "Can't do inplace edit without backup");
702 sv_setpvn(sv,">",!PL_inplace);
703 sv_catpvn(sv,PL_oldname,oldlen);
704 SETERRNO(0,0); /* in case sprintf set errno */
706 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
707 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
709 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
710 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
713 if (ckWARN_d(WARN_INPLACE))
714 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
715 PL_oldname, Strerror(errno) );
719 setdefout(PL_argvoutgv);
720 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
721 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
723 (void)fchmod(PL_lastfd,PL_filemode);
725 # if !(defined(WIN32) && defined(__BORLANDC__))
726 /* Borland runtime creates a readonly file! */
727 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
730 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
732 (void)fchown(PL_lastfd,fileuid,filegid);
735 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
740 return IoIFP(GvIOp(gv));
744 if (ckWARN_d(WARN_INPLACE)) {
746 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
747 && !S_ISREG(PL_statbuf.st_mode))
749 Perl_warner(aTHX_ WARN_INPLACE,
750 "Can't do inplace edit: %s is not a regular file",
754 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
755 PL_oldname, Strerror(eno));
759 if (io && (IoFLAGS(io) & IOf_ARGV))
760 IoFLAGS(io) |= IOf_START;
762 (void)do_close(PL_argvoutgv,FALSE);
763 if (io && (IoFLAGS(io) & IOf_ARGV)
764 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
766 GV *oldout = (GV*)av_pop(PL_argvout_stack);
768 SvREFCNT_dec(oldout);
771 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
778 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
797 if (PerlProc_pipe(fd) < 0)
799 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
800 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
801 IoIFP(wstio) = IoOFP(wstio);
802 IoTYPE(rstio) = IoTYPE_RDONLY;
803 IoTYPE(wstio) = IoTYPE_WRONLY;
804 if (!IoIFP(rstio) || !IoOFP(wstio)) {
805 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
806 else PerlLIO_close(fd[0]);
807 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
808 else PerlLIO_close(fd[1]);
812 sv_setsv(sv,&PL_sv_yes);
816 sv_setsv(sv,&PL_sv_undef);
821 /* explicit renamed to avoid C++ conflict -- kja */
823 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
830 if (!gv || SvTYPE(gv) != SVt_PVGV) {
832 SETERRNO(EBADF,SS$_IVCHAN);
836 if (!io) { /* never opened */
839 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
840 report_evil_fh(gv, io, PL_op->op_type);
841 SETERRNO(EBADF,SS$_IVCHAN);
845 retval = io_close(io, not_implicit);
849 IoLINES_LEFT(io) = IoPAGE_LEN(io);
851 IoTYPE(io) = IoTYPE_CLOSED;
856 Perl_io_close(pTHX_ IO *io, bool not_implicit)
862 if (IoTYPE(io) == IoTYPE_PIPE) {
863 status = PerlProc_pclose(IoIFP(io));
865 STATUS_NATIVE_SET(status);
866 retval = (STATUS_POSIX == 0);
869 retval = (status != -1);
872 else if (IoTYPE(io) == IoTYPE_STD)
875 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
876 retval = (PerlIO_close(IoOFP(io)) != EOF);
877 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
880 retval = (PerlIO_close(IoIFP(io)) != EOF);
882 IoOFP(io) = IoIFP(io) = Nullfp;
884 else if (not_implicit) {
885 SETERRNO(EBADF,SS$_IVCHAN);
892 Perl_do_eof(pTHX_ GV *gv)
902 else if (ckWARN(WARN_IO)
903 && (IoTYPE(io) == IoTYPE_WRONLY || IoIFP(io) == PerlIO_stdout()
904 || IoIFP(io) == PerlIO_stderr()))
906 /* integrate to report_evil_fh()? */
909 SV* sv = sv_newmortal();
910 gv_efullname4(sv, gv, Nullch, FALSE);
911 name = SvPV_nolen(sv);
914 Perl_warner(aTHX_ WARN_IO,
915 "Filehandle %s opened only for output", name);
917 Perl_warner(aTHX_ WARN_IO,
918 "Filehandle opened only for output");
923 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
924 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
925 return FALSE; /* this is the most usual case */
928 ch = PerlIO_getc(IoIFP(io));
930 (void)PerlIO_ungetc(IoIFP(io),ch);
933 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
934 if (PerlIO_get_cnt(IoIFP(io)) < -1)
935 PerlIO_set_cnt(IoIFP(io),-1);
937 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
938 if (!nextargv(PL_argvgv)) /* get another fp handy */
942 return TRUE; /* normal fp, definitely end of file */
948 Perl_do_tell(pTHX_ GV *gv)
953 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
954 #ifdef ULTRIX_STDIO_BOTCH
956 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
958 return PerlIO_tell(fp);
962 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
963 report_evil_fh(gv, io, PL_op->op_type);
965 SETERRNO(EBADF,RMS$_IFI);
970 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
975 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
976 #ifdef ULTRIX_STDIO_BOTCH
978 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
980 return PerlIO_seek(fp, pos, whence) >= 0;
984 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
985 report_evil_fh(gv, io, PL_op->op_type);
987 SETERRNO(EBADF,RMS$_IFI);
992 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
997 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
998 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1001 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1002 report_evil_fh(gv, io, PL_op->op_type);
1004 SETERRNO(EBADF,RMS$_IFI);
1009 Perl_mode_from_discipline(pTHX_ SV *discp)
1011 int mode = O_BINARY;
1014 char *s = SvPV(discp,len);
1019 if (len > 3 && strnEQ(s+1, "raw", 3)
1020 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1029 if (len > 4 && strnEQ(s+1, "crlf", 4)
1030 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1039 goto fail_discipline;
1042 else if (isSPACE(*s)) {
1049 end = strchr(s+1, ':');
1052 Perl_croak(aTHX_ "Unknown discipline '%.*s'", end-s, s);
1060 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1063 # if defined(atarist) || defined(__MINT__)
1064 if (!PerlIO_flush(fp)) {
1065 if (mode & O_BINARY)
1066 ((FILE*)fp)->_flag |= _IOBIN;
1068 ((FILE*)fp)->_flag &= ~ _IOBIN;
1073 if (PerlLIO_setmode(PerlIO_fileno(fp), mode) != -1) {
1074 # if defined(WIN32) && defined(__BORLANDC__)
1075 /* The translation mode of the stream is maintained independent
1076 * of the translation mode of the fd in the Borland RTL (heavy
1077 * digging through their runtime sources reveal). User has to
1078 * set the mode explicitly for the stream (though they don't
1079 * document this anywhere). GSAR 97-5-24
1081 PerlIO_seek(fp,0L,0);
1082 if (mode & O_BINARY)
1083 ((FILE*)fp)->flags |= _F_BIN;
1085 ((FILE*)fp)->flags &= ~ _F_BIN;
1093 # if defined(USEMYBINMODE)
1094 if (my_binmode(fp, iotype, mode) != FALSE)
1104 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
1105 /* code courtesy of William Kucharski */
1108 I32 my_chsize(fd, length)
1109 I32 fd; /* file descriptor */
1110 Off_t length; /* length to set file to */
1113 struct stat filebuf;
1115 if (PerlLIO_fstat(fd, &filebuf) < 0)
1118 if (filebuf.st_size < length) {
1120 /* extend file length */
1122 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1125 /* write a "0" byte */
1127 if ((PerlLIO_write(fd, "", 1)) != 1)
1131 /* truncate length */
1135 fl.l_start = length;
1136 fl.l_type = F_WRLCK; /* write lock on file space */
1139 * This relies on the UNDOCUMENTED F_FREESP argument to
1140 * fcntl(2), which truncates the file so that it ends at the
1141 * position indicated by fl.l_start.
1143 * Will minor miracles never cease?
1146 if (fcntl(fd, F_FREESP, &fl) < 0)
1153 #endif /* F_FREESP */
1156 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1158 register char *tmps;
1161 /* assuming fp is checked earlier */
1167 if (SvIOK(sv) && SvIVX(sv) != 0) {
1168 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1169 return !PerlIO_error(fp);
1171 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1172 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1173 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1174 return !PerlIO_error(fp);
1177 switch (SvTYPE(sv)) {
1181 if (ckWARN(WARN_UNINITIALIZED))
1190 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1192 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1193 return !PerlIO_error(fp);
1198 /* XXX Fix this when the I/O disciplines arrive. XXX */
1200 sv_utf8_downgrade(sv, FALSE);
1202 tmps = SvPV(sv, len);
1205 /* To detect whether the process is about to overstep its
1206 * filesize limit we would need getrlimit(). We could then
1207 * also transparently raise the limit with setrlimit() --
1208 * but only until the system hard limit/the filesystem limit,
1209 * at which we would get EPERM. Note that when using buffered
1210 * io the write failure can be delayed until the flush/close. --jhi */
1211 if (len && (PerlIO_write(fp,tmps,len) == 0))
1213 return !PerlIO_error(fp);
1223 if (PL_op->op_flags & OPf_REF) {
1228 if (io && IoIFP(io)) {
1230 sv_setpv(PL_statname,"");
1231 PL_laststype = OP_STAT;
1232 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1236 return PL_laststatval;
1237 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1238 report_evil_fh(gv, io, PL_op->op_type);
1240 sv_setpv(PL_statname,"");
1241 return (PL_laststatval = -1);
1249 if (SvTYPE(sv) == SVt_PVGV) {
1253 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1260 sv_setpv(PL_statname, s);
1261 PL_laststype = OP_STAT;
1262 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1263 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1264 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1265 return PL_laststatval;
1275 if (PL_op->op_flags & OPf_REF) {
1277 if (cGVOP_gv == PL_defgv) {
1278 if (PL_laststype != OP_LSTAT)
1279 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1280 return PL_laststatval;
1282 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1285 PL_laststype = OP_LSTAT;
1289 sv_setpv(PL_statname,SvPV(sv, n_a));
1290 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1291 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1292 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1293 return PL_laststatval;
1297 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1299 return do_aexec5(really, mark, sp, 0, 0);
1303 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1304 int fd, int do_report)
1306 #ifdef MACOS_TRADITIONAL
1307 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1315 New(401,PL_Argv, sp - mark + 1, char*);
1317 while (++mark <= sp) {
1319 *a++ = SvPVx(*mark, n_a);
1324 if (*PL_Argv[0] != '/') /* will execvp use PATH? */
1325 TAINT_ENV(); /* testing IFS here is overkill, probably */
1326 if (really && *(tmps = SvPV(really, n_a)))
1327 PerlProc_execvp(tmps,PL_Argv);
1329 PerlProc_execvp(PL_Argv[0],PL_Argv);
1330 if (ckWARN(WARN_EXEC))
1331 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1332 PL_Argv[0], Strerror(errno));
1336 PerlLIO_write(fd, (void*)&e, sizeof(int));
1346 Perl_do_execfree(pTHX)
1350 PL_Argv = Null(char **);
1358 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1361 Perl_do_exec(pTHX_ char *cmd)
1363 return do_exec3(cmd,0,0);
1367 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1373 while (*cmd && isSPACE(*cmd))
1376 /* save an extra exec if possible */
1379 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1381 s = cmd+PL_cshlen+3;
1395 if (s[-1] == '\'') {
1397 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1405 /* see if there are shell metacharacters in it */
1407 if (*cmd == '.' && isSPACE(cmd[1]))
1410 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1413 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1417 for (s = cmd; *s; s++) {
1418 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1419 if (*s == '\n' && !s[1]) {
1423 /* handle the 2>&1 construct at the end */
1424 if (*s == '>' && s[1] == '&' && s[2] == '1'
1425 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1426 && (!s[3] || isSPACE(s[3])))
1430 while (*t && isSPACE(*t))
1432 if (!*t && (dup2(1,2) != -1)) {
1438 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1443 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1444 PL_Cmd = savepvn(cmd, s-cmd);
1446 for (s = PL_Cmd; *s;) {
1447 while (*s && isSPACE(*s)) s++;
1450 while (*s && !isSPACE(*s)) s++;
1456 PerlProc_execvp(PL_Argv[0],PL_Argv);
1457 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1465 if (ckWARN(WARN_EXEC))
1466 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1467 PL_Argv[0], Strerror(errno));
1469 PerlLIO_write(fd, (void*)&e, sizeof(int));
1478 #endif /* OS2 || WIN32 */
1481 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1486 register I32 tot = 0;
1489 SV **oldmark = mark;
1492 #define APPLY_TAINT_PROPER() \
1494 if (PL_tainted) { TAINT_PROPER(what); } \
1497 /* This is a first heuristic; it doesn't catch tainting magic. */
1499 while (++mark <= sp) {
1500 if (SvTAINTED(*mark)) {
1510 APPLY_TAINT_PROPER();
1513 APPLY_TAINT_PROPER();
1515 while (++mark <= sp) {
1516 char *name = SvPVx(*mark, n_a);
1517 APPLY_TAINT_PROPER();
1518 if (PerlLIO_chmod(name, val))
1526 APPLY_TAINT_PROPER();
1527 if (sp - mark > 2) {
1528 val = SvIVx(*++mark);
1529 val2 = SvIVx(*++mark);
1530 APPLY_TAINT_PROPER();
1532 while (++mark <= sp) {
1533 char *name = SvPVx(*mark, n_a);
1534 APPLY_TAINT_PROPER();
1535 if (PerlLIO_chown(name, val, val2))
1542 XXX Should we make lchown() directly available from perl?
1543 For now, we'll let Configure test for HAS_LCHOWN, but do
1544 nothing in the core.
1550 APPLY_TAINT_PROPER();
1553 s = SvPVx(*++mark, n_a);
1555 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1557 if (!(val = whichsig(s)))
1558 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1562 APPLY_TAINT_PROPER();
1565 /* kill() doesn't do process groups (job trees?) under VMS */
1566 if (val < 0) val = -val;
1567 if (val == SIGKILL) {
1568 # include <starlet.h>
1569 /* Use native sys$delprc() to insure that target process is
1570 * deleted; supervisor-mode images don't pay attention to
1571 * CRTL's emulation of Unix-style signals and kill()
1573 while (++mark <= sp) {
1574 I32 proc = SvIVx(*mark);
1575 register unsigned long int __vmssts;
1576 APPLY_TAINT_PROPER();
1577 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1581 case SS$_NOSUCHNODE:
1582 SETERRNO(ESRCH,__vmssts);
1585 SETERRNO(EPERM,__vmssts);
1588 SETERRNO(EVMSERR,__vmssts);
1597 while (++mark <= sp) {
1598 I32 proc = SvIVx(*mark);
1599 APPLY_TAINT_PROPER();
1601 if (PerlProc_killpg(proc,val)) /* BSD */
1603 if (PerlProc_kill(-proc,val)) /* SYSV */
1609 while (++mark <= sp) {
1610 I32 proc = SvIVx(*mark);
1611 APPLY_TAINT_PROPER();
1612 if (PerlProc_kill(proc, val))
1620 APPLY_TAINT_PROPER();
1622 while (++mark <= sp) {
1623 s = SvPVx(*mark, n_a);
1624 APPLY_TAINT_PROPER();
1625 if (PL_euid || PL_unsafe) {
1629 else { /* don't let root wipe out directories without -U */
1630 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1642 APPLY_TAINT_PROPER();
1643 if (sp - mark > 2) {
1644 #if defined(I_UTIME) || defined(VMS)
1645 struct utimbuf utbuf;
1653 Zero(&utbuf, sizeof utbuf, char);
1655 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1656 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1658 utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */
1659 utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */
1661 APPLY_TAINT_PROPER();
1663 while (++mark <= sp) {
1664 char *name = SvPVx(*mark, n_a);
1665 APPLY_TAINT_PROPER();
1666 if (PerlLIO_utime(name, &utbuf))
1677 #undef APPLY_TAINT_PROPER
1680 /* Do the permissions allow some operation? Assumes statcache already set. */
1681 #ifndef VMS /* VMS' cando is in vms.c */
1683 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1684 /* Note: we use `effective' both for uids and gids.
1685 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1688 /* [Comments and code from Len Reed]
1689 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1690 * to write-protected files. The execute permission bit is set
1691 * by the Miscrosoft C library stat() function for the following:
1696 * All files and directories are readable.
1697 * Directories and special files, e.g. "CON", cannot be
1699 * [Comment by Tom Dinger -- a directory can have the write-protect
1700 * bit set in the file system, but DOS permits changes to
1701 * the directory anyway. In addition, all bets are off
1702 * here for networked software, such as Novell and
1706 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1707 * too so it will actually look into the files for magic numbers
1709 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1711 #else /* ! DOSISH */
1712 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1713 if (mode == S_IXUSR) {
1714 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1718 return TRUE; /* root reads and writes anything */
1721 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1722 if (statbufp->st_mode & mode)
1723 return TRUE; /* ok as "user" */
1725 else if (ingroup(statbufp->st_gid,effective)) {
1726 if (statbufp->st_mode & mode >> 3)
1727 return TRUE; /* ok as "group" */
1729 else if (statbufp->st_mode & mode >> 6)
1730 return TRUE; /* ok as "other" */
1732 #endif /* ! DOSISH */
1737 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1739 #ifdef MACOS_TRADITIONAL
1740 /* This is simply not correct for AppleShare, but fix it yerself. */
1743 if (testgid == (effective ? PL_egid : PL_gid))
1745 #ifdef HAS_GETGROUPS
1750 Groups_t gary[NGROUPS];
1753 anum = getgroups(NGROUPS,gary);
1755 if (gary[anum] == testgid)
1763 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1766 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1772 key = (key_t)SvNVx(*++mark);
1773 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1774 flags = SvIVx(*++mark);
1780 return msgget(key, flags);
1784 return semget(key, n, flags);
1788 return shmget(key, n, flags);
1790 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1792 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1795 return -1; /* should never happen */
1799 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1804 I32 id, n, cmd, infosize, getinfo;
1807 id = SvIVx(*++mark);
1808 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1809 cmd = SvIVx(*++mark);
1812 getinfo = (cmd == IPC_STAT);
1818 if (cmd == IPC_STAT || cmd == IPC_SET)
1819 infosize = sizeof(struct msqid_ds);
1824 if (cmd == IPC_STAT || cmd == IPC_SET)
1825 infosize = sizeof(struct shmid_ds);
1831 if (cmd == IPC_STAT || cmd == IPC_SET)
1832 infosize = sizeof(struct semid_ds);
1833 else if (cmd == GETALL || cmd == SETALL)
1835 struct semid_ds semds;
1837 #ifdef EXTRA_F_IN_SEMUN_BUF
1838 semun.buff = &semds;
1842 getinfo = (cmd == GETALL);
1843 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1845 infosize = semds.sem_nsems * sizeof(short);
1846 /* "short" is technically wrong but much more portable
1847 than guessing about u_?short(_t)? */
1850 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1854 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1856 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1865 SvPV_force(astr, len);
1866 a = SvGROW(astr, infosize+1);
1870 a = SvPV(astr, len);
1871 if (len != infosize)
1872 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1881 a = INT2PTR(char *,i); /* ouch */
1888 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1894 union semun unsemds;
1896 #ifdef EXTRA_F_IN_SEMUN_BUF
1897 unsemds.buff = (struct semid_ds *)a;
1899 unsemds.buf = (struct semid_ds *)a;
1901 ret = Semctl(id, n, cmd, unsemds);
1903 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1910 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1914 if (getinfo && ret >= 0) {
1915 SvCUR_set(astr, infosize);
1916 *SvEND(astr) = '\0';
1923 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1929 I32 id, msize, flags;
1932 id = SvIVx(*++mark);
1934 flags = SvIVx(*++mark);
1935 mbuf = SvPV(mstr, len);
1936 if ((msize = len - sizeof(long)) < 0)
1937 Perl_croak(aTHX_ "Arg too short for msgsnd");
1939 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1941 Perl_croak(aTHX_ "msgsnd not implemented");
1946 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1953 I32 id, msize, flags, ret;
1956 id = SvIVx(*++mark);
1958 /* suppress warning when reading into undef var --jhi */
1960 sv_setpvn(mstr, "", 0);
1961 msize = SvIVx(*++mark);
1962 mtype = (long)SvIVx(*++mark);
1963 flags = SvIVx(*++mark);
1964 SvPV_force(mstr, len);
1965 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1968 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1970 SvCUR_set(mstr, sizeof(long)+ret);
1971 *SvEND(mstr) = '\0';
1972 #ifndef INCOMPLETE_TAINTS
1973 /* who knows who has been playing with this message? */
1979 Perl_croak(aTHX_ "msgrcv not implemented");
1984 Perl_do_semop(pTHX_ SV **mark, SV **sp)
1993 id = SvIVx(*++mark);
1995 opbuf = SvPV(opstr, opsize);
1996 if (opsize < sizeof(struct sembuf)
1997 || (opsize % sizeof(struct sembuf)) != 0) {
1998 SETERRNO(EINVAL,LIB$_INVARG);
2002 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
2004 Perl_croak(aTHX_ "semop not implemented");
2009 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2015 I32 id, mpos, msize;
2017 struct shmid_ds shmds;
2019 id = SvIVx(*++mark);
2021 mpos = SvIVx(*++mark);
2022 msize = SvIVx(*++mark);
2024 if (shmctl(id, IPC_STAT, &shmds) == -1)
2026 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2027 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
2030 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2031 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2033 if (optype == OP_SHMREAD) {
2034 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2036 sv_setpvn(mstr, "", 0);
2037 SvPV_force(mstr, len);
2038 mbuf = SvGROW(mstr, msize+1);
2040 Copy(shm + mpos, mbuf, msize, char);
2041 SvCUR_set(mstr, msize);
2042 *SvEND(mstr) = '\0';
2044 #ifndef INCOMPLETE_TAINTS
2045 /* who knows who has been playing with this shared memory? */
2052 mbuf = SvPV(mstr, len);
2053 if ((n = len) > msize)
2055 Copy(mbuf, shm + mpos, n, char);
2057 memzero(shm + mpos + n, msize - n);
2061 Perl_croak(aTHX_ "shm I/O not implemented");
2065 #endif /* SYSV IPC */