3 * Copyright (c) 1991-1999, 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>
51 # define OPEN_EXCL O_EXCL
56 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
60 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
65 #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */
66 # include <sys/socket.h>
67 # if defined(USE_SOCKS) && defined(I_SOCKS)
75 # include <net/errno.h>
80 /* Put this after #includes because <unistd.h> defines _XOPEN_*. */
82 # if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__)
83 # define Sock_size_t Size_t
85 # define Sock_size_t int
90 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
91 int rawmode, int rawperm, PerlIO *supplied_fp)
93 return do_open9(gv, name, len, as_raw, rawmode, rawperm,
94 supplied_fp, Nullsv, 0);
98 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
99 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
102 register IO *io = GvIOn(gv);
103 PerlIO *saveifp = Nullfp;
104 PerlIO *saveofp = Nullfp;
110 bool was_fdopen = FALSE;
112 PL_forkprocess = 1; /* assume true if no fork */
115 fd = PerlIO_fileno(IoIFP(io));
116 if (IoTYPE(io) == '-')
118 else if (fd <= PL_maxsysfd) {
121 savetype = IoTYPE(io);
124 else if (IoTYPE(io) == '|')
125 result = PerlProc_pclose(IoIFP(io));
126 else if (IoIFP(io) != IoOFP(io)) {
128 result = PerlIO_close(IoOFP(io));
129 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
132 result = PerlIO_close(IoIFP(io));
135 result = PerlIO_close(IoIFP(io));
136 if (result == EOF && fd > PL_maxsysfd)
137 PerlIO_printf(Perl_error_log,
138 "Warning: unable to close filehandle %s properly.\n",
140 IoOFP(io) = IoIFP(io) = Nullfp;
144 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
145 rawmode |= O_LARGEFILE;
149 #define O_ACCMODE 3 /* Assume traditional implementation */
152 switch (result = rawmode & O_ACCMODE) {
165 writing = (result > 0);
166 fd = PerlLIO_open3(name, rawmode, rawperm);
172 if (result == O_RDONLY)
175 else if (rawmode & O_APPEND)
176 fpmode = (result == O_WRONLY) ? "a" : "a+";
179 fpmode = (result == O_WRONLY) ? "w" : "r+";
180 fp = PerlIO_fdopen(fd, fpmode);
190 char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
193 type = savepvn(name, len);
198 name = SvPV(svs, l) ;
200 name = savepvn(name, len);
204 while (tlen && isSPACE(type[tlen-1]))
209 mode[0] = mode[1] = mode[2] = '\0';
211 if (*type == '+' && tlen > 1 && type[tlen-1] != '|') { /* scary */
218 if (num_svs && (tlen != 2 || type[1] != '-')) {
220 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", olen, oname);
223 for (type++, tlen--; isSPACE(*type); type++, tlen--) ;
228 if (*name == '\0') { /* command is missing 19990114 */
230 if (ckWARN(WARN_PIPE))
231 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
235 if (strNE(name,"-") || num_svs)
237 TAINT_PROPER("piped open");
238 if (name[len-1] == '|') {
241 if (ckWARN(WARN_PIPE))
242 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
244 fp = PerlProc_popen(name,"w");
247 else if (*type == '>') {
248 TAINT_PROPER("open");
251 mode[0] = IoTYPE(io) = 'a';
259 if (num_svs && tlen != 1)
270 if (!*name && supplied_fp)
274 for (; isSPACE(*name); name++) ;
279 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
283 SETERRNO(EINVAL,SS$_IVCHAN);
288 PerlIO *fp = IoIFP(thatio);
289 /* Flush stdio buffer before dup. --mjd
290 * Unfortunately SEEK_CURing 0 seems to
291 * be optimized away on most platforms;
292 * only Solaris and Linux seem to flush
294 PerlIO_seek(fp, 0, SEEK_CUR);
295 /* On the other hand, do all platforms
296 * take gracefully to flushing a read-only
297 * filehandle? Perhaps we should do
298 * fsetpos(src)+fgetpos(dst)? --nik */
300 fd = PerlIO_fileno(fp);
301 if (IoTYPE(thatio) == 's')
308 fd = PerlLIO_dup(fd);
311 if (!(fp = PerlIO_fdopen(fd,mode))) {
319 for (; isSPACE(*type); type++) ;
320 if (strEQ(type,"-")) {
321 fp = PerlIO_stdout();
325 fp = PerlIO_open((num_svs ? name : type), mode);
329 else if (*type == '<') {
330 if (num_svs && tlen != 1)
333 for (type++; isSPACE(*type); type++) ;
339 if (strEQ(type,"-")) {
344 fp = PerlIO_open((num_svs ? name : type), mode);
346 else if (tlen > 1 && type[tlen-1] == '|') {
348 if (tlen != 2 || type[0] != '-')
353 while (tlen && isSPACE(type[tlen-1]))
356 for (; isSPACE(*type); type++) ;
359 if (*name == '\0') { /* command is missing 19990114 */
361 if (ckWARN(WARN_PIPE))
362 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
366 if (strNE(name,"-") || num_svs)
368 TAINT_PROPER("piped open");
369 fp = PerlProc_popen(name,"r");
378 for (; isSPACE(*name); name++) ;
379 if (strEQ(name,"-")) {
384 fp = PerlIO_open(name,"r");
389 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == '<' && strchr(name, '\n'))
390 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
394 IoTYPE(io) != '|' && IoTYPE(io) != '-') {
396 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
397 (void)PerlIO_close(fp);
400 if (S_ISSOCK(PL_statbuf.st_mode))
401 IoTYPE(io) = 's'; /* in case a socket was passed in to us */
405 !(PL_statbuf.st_mode & S_IFMT)
411 Sock_size_t buflen = sizeof tmpbuf;
412 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
414 || errno != ENOTSOCK)
415 IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
416 /* but some return 0 for streams too, sigh */
420 if (saveifp) { /* must use old fp? */
421 fd = PerlIO_fileno(saveifp);
423 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
424 if (saveofp != saveifp) { /* was a socket? */
425 PerlIO_close(saveofp);
430 if (fd != PerlIO_fileno(fp)) {
434 PerlLIO_dup2(PerlIO_fileno(fp), fd);
435 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
436 (void)SvUPGRADE(sv, SVt_IV);
439 sv = *av_fetch(PL_fdpid,fd,TRUE);
440 (void)SvUPGRADE(sv, SVt_IV);
449 #if defined(HAS_FCNTL) && defined(F_SETFD)
451 int save_errno = errno;
452 fd = PerlIO_fileno(fp);
453 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
458 IoFLAGS(io) &= ~IOf_NOLINE;
461 if (IoTYPE(io) == 's'
462 || (IoTYPE(io) == '>' && S_ISCHR(PL_statbuf.st_mode)) ) {
463 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
477 IoTYPE(io) = savetype;
482 Perl_nextargv(pTHX_ register GV *gv)
485 #ifndef FLEXFILENAMES
494 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
495 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
496 IoFLAGS(io) &= ~IOf_START;
498 if (!PL_argvout_stack)
499 PL_argvout_stack = newAV();
500 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
503 if (PL_filemode & (S_ISUID|S_ISGID)) {
504 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
506 (void)fchmod(PL_lastfd,PL_filemode);
508 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
512 while (av_len(GvAV(gv)) >= 0) {
515 sv = av_shift(GvAV(gv));
517 sv_setsv(GvSV(gv),sv);
518 SvSETMAGIC(GvSV(gv));
519 PL_oldname = SvPVx(GvSV(gv), oldlen);
520 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
522 TAINT_PROPER("inplace open");
523 if (oldlen == 1 && *PL_oldname == '-') {
524 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
525 return IoIFP(GvIOp(gv));
527 #ifndef FLEXFILENAMES
528 filedev = PL_statbuf.st_dev;
529 fileino = PL_statbuf.st_ino;
531 PL_filemode = PL_statbuf.st_mode;
532 fileuid = PL_statbuf.st_uid;
533 filegid = PL_statbuf.st_gid;
534 if (!S_ISREG(PL_filemode)) {
535 if (ckWARN_d(WARN_INPLACE))
536 Perl_warner(aTHX_ WARN_INPLACE,
537 "Can't do inplace edit: %s is not a regular file",
543 char *star = strchr(PL_inplace, '*');
545 char *begin = PL_inplace;
546 sv_setpvn(sv, "", 0);
548 sv_catpvn(sv, begin, star - begin);
549 sv_catpvn(sv, PL_oldname, oldlen);
551 } while ((star = strchr(begin, '*')));
556 sv_catpv(sv,PL_inplace);
558 #ifndef FLEXFILENAMES
559 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
560 && PL_statbuf.st_dev == filedev
561 && PL_statbuf.st_ino == fileino
563 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
567 if (ckWARN_d(WARN_INPLACE))
568 Perl_warner(aTHX_ WARN_INPLACE,
569 "Can't do inplace edit: %s would not be unique",
576 #if !defined(DOSISH) && !defined(CYGWIN)
577 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
578 if (ckWARN_d(WARN_INPLACE))
579 Perl_warner(aTHX_ WARN_INPLACE,
580 "Can't rename %s to %s: %s, skipping file",
581 PL_oldname, SvPVX(sv), Strerror(errno) );
587 (void)PerlLIO_unlink(SvPVX(sv));
588 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
589 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
592 (void)UNLINK(SvPVX(sv));
593 if (link(PL_oldname,SvPVX(sv)) < 0) {
594 if (ckWARN_d(WARN_INPLACE))
595 Perl_warner(aTHX_ WARN_INPLACE,
596 "Can't rename %s to %s: %s, skipping file",
597 PL_oldname, SvPVX(sv), Strerror(errno) );
601 (void)UNLINK(PL_oldname);
605 #if !defined(DOSISH) && !defined(AMIGAOS)
606 # ifndef VMS /* Don't delete; use automatic file versioning */
607 if (UNLINK(PL_oldname) < 0) {
608 if (ckWARN_d(WARN_INPLACE))
609 Perl_warner(aTHX_ WARN_INPLACE,
610 "Can't remove %s: %s, skipping file",
611 PL_oldname, Strerror(errno) );
617 Perl_croak(aTHX_ "Can't do inplace edit without backup");
621 sv_setpvn(sv,">",!PL_inplace);
622 sv_catpvn(sv,PL_oldname,oldlen);
623 SETERRNO(0,0); /* in case sprintf set errno */
625 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
626 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
628 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
629 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
632 if (ckWARN_d(WARN_INPLACE))
633 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
634 PL_oldname, Strerror(errno) );
638 setdefout(PL_argvoutgv);
639 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
640 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
642 (void)fchmod(PL_lastfd,PL_filemode);
644 # if !(defined(WIN32) && defined(__BORLANDC__))
645 /* Borland runtime creates a readonly file! */
646 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
649 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
651 (void)fchown(PL_lastfd,fileuid,filegid);
654 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
659 return IoIFP(GvIOp(gv));
663 if (ckWARN_d(WARN_INPLACE)) {
664 if (!S_ISREG(PL_statbuf.st_mode))
665 Perl_warner(aTHX_ WARN_INPLACE,
666 "Can't do inplace edit: %s is not a regular file",
669 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
670 PL_oldname, Strerror(errno));
674 if (io && (IoFLAGS(io) & IOf_ARGV))
675 IoFLAGS(io) |= IOf_START;
677 (void)do_close(PL_argvoutgv,FALSE);
678 if (io && (IoFLAGS(io) & IOf_ARGV)
679 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
681 GV *oldout = (GV*)av_pop(PL_argvout_stack);
683 SvREFCNT_dec(oldout);
686 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
693 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
712 if (PerlProc_pipe(fd) < 0)
714 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
715 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
716 IoIFP(wstio) = IoOFP(wstio);
719 if (!IoIFP(rstio) || !IoOFP(wstio)) {
720 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
721 else PerlLIO_close(fd[0]);
722 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
723 else PerlLIO_close(fd[1]);
727 sv_setsv(sv,&PL_sv_yes);
731 sv_setsv(sv,&PL_sv_undef);
736 /* explicit renamed to avoid C++ conflict -- kja */
738 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
745 if (!gv || SvTYPE(gv) != SVt_PVGV) {
747 SETERRNO(EBADF,SS$_IVCHAN);
751 if (!io) { /* never opened */
754 if (ckWARN(WARN_UNOPENED))
755 Perl_warner(aTHX_ WARN_UNOPENED,
756 "Close on unopened file <%s>",GvENAME(gv));
757 SETERRNO(EBADF,SS$_IVCHAN);
761 retval = io_close(io, not_implicit);
765 IoLINES_LEFT(io) = IoPAGE_LEN(io);
772 Perl_io_close(pTHX_ IO *io, bool not_implicit)
778 if (IoTYPE(io) == '|') {
779 status = PerlProc_pclose(IoIFP(io));
781 STATUS_NATIVE_SET(status);
782 retval = (STATUS_POSIX == 0);
785 retval = (status != -1);
788 else if (IoTYPE(io) == '-')
791 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
792 retval = (PerlIO_close(IoOFP(io)) != EOF);
793 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
796 retval = (PerlIO_close(IoIFP(io)) != EOF);
798 IoOFP(io) = IoIFP(io) = Nullfp;
800 else if (not_implicit) {
801 SETERRNO(EBADF,SS$_IVCHAN);
808 Perl_do_eof(pTHX_ GV *gv)
818 else if (ckWARN(WARN_IO)
819 && (IoTYPE(io) == '>' || IoIFP(io) == PerlIO_stdout()
820 || IoIFP(io) == PerlIO_stderr()))
822 SV* sv = sv_newmortal();
823 gv_efullname3(sv, gv, Nullch);
824 Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for output",
830 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
831 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
832 return FALSE; /* this is the most usual case */
835 ch = PerlIO_getc(IoIFP(io));
837 (void)PerlIO_ungetc(IoIFP(io),ch);
840 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
841 if (PerlIO_get_cnt(IoIFP(io)) < -1)
842 PerlIO_set_cnt(IoIFP(io),-1);
844 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
845 if (!nextargv(PL_argvgv)) /* get another fp handy */
849 return TRUE; /* normal fp, definitely end of file */
855 Perl_do_tell(pTHX_ GV *gv)
860 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
861 #ifdef ULTRIX_STDIO_BOTCH
863 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
865 return PerlIO_tell(fp);
869 if (ckWARN(WARN_UNOPENED))
870 Perl_warner(aTHX_ WARN_UNOPENED, "tell() on unopened file");
872 SETERRNO(EBADF,RMS$_IFI);
877 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
882 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
883 #ifdef ULTRIX_STDIO_BOTCH
885 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
887 return PerlIO_seek(fp, pos, whence) >= 0;
891 if (ckWARN(WARN_UNOPENED))
892 Perl_warner(aTHX_ WARN_UNOPENED, "seek() on unopened file");
894 SETERRNO(EBADF,RMS$_IFI);
899 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
904 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
905 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
908 if (ckWARN(WARN_UNOPENED))
909 Perl_warner(aTHX_ WARN_UNOPENED, "sysseek() on unopened file");
911 SETERRNO(EBADF,RMS$_IFI);
916 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int flag)
919 Perl_croak(aTHX_ "panic: unsetting binmode"); /* Not implemented yet */
921 #if defined(atarist) || defined(__MINT__)
922 if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN))
927 if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) {
928 #if defined(WIN32) && defined(__BORLANDC__)
929 /* The translation mode of the stream is maintained independent
930 * of the translation mode of the fd in the Borland RTL (heavy
931 * digging through their runtime sources reveal). User has to
932 * set the mode explicitly for the stream (though they don't
933 * document this anywhere). GSAR 97-5-24
935 PerlIO_seek(fp,0L,0);
936 ((FILE*)fp)->flags |= _F_BIN;
944 #if defined(USEMYBINMODE)
945 if (my_binmode(fp,iotype) != FALSE)
955 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
956 /* code courtesy of William Kucharski */
959 I32 my_chsize(fd, length)
960 I32 fd; /* file descriptor */
961 Off_t length; /* length to set file to */
966 if (PerlLIO_fstat(fd, &filebuf) < 0)
969 if (filebuf.st_size < length) {
971 /* extend file length */
973 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
976 /* write a "0" byte */
978 if ((PerlLIO_write(fd, "", 1)) != 1)
982 /* truncate length */
987 fl.l_type = F_WRLCK; /* write lock on file space */
990 * This relies on the UNDOCUMENTED F_FREESP argument to
991 * fcntl(2), which truncates the file so that it ends at the
992 * position indicated by fl.l_start.
994 * Will minor miracles never cease?
997 if (fcntl(fd, F_FREESP, &fl) < 0)
1004 #endif /* F_FREESP */
1007 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1009 register char *tmps;
1012 /* assuming fp is checked earlier */
1018 if (SvIOK(sv) && SvIVX(sv) != 0) {
1019 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1020 return !PerlIO_error(fp);
1022 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1023 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1024 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1025 return !PerlIO_error(fp);
1028 switch (SvTYPE(sv)) {
1032 if (ckWARN(WARN_UNINITIALIZED))
1041 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1043 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1044 return !PerlIO_error(fp);
1048 tmps = SvPV(sv, len);
1051 /* To detect whether the process is about to overstep its
1052 * filesize limit we would need getrlimit(). We could then
1053 * also transparently raise the limit with setrlimit() --
1054 * but only until the system hard limit/the filesystem limit,
1055 * at which we would get EPERM. Note that when using buffered
1056 * io the write failure can be delayed until the flush/close. --jhi */
1057 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
1059 return !PerlIO_error(fp);
1069 if (PL_op->op_flags & OPf_REF) {
1074 if (io && IoIFP(io)) {
1076 sv_setpv(PL_statname,"");
1077 PL_laststype = OP_STAT;
1078 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1081 if (tmpgv == PL_defgv)
1082 return PL_laststatval;
1083 if (ckWARN(WARN_UNOPENED))
1084 Perl_warner(aTHX_ WARN_UNOPENED, "Stat on unopened file <%s>",
1087 sv_setpv(PL_statname,"");
1088 return (PL_laststatval = -1);
1096 if (SvTYPE(sv) == SVt_PVGV) {
1100 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1101 tmpgv = (GV*)SvRV(sv);
1107 sv_setpv(PL_statname, s);
1108 PL_laststype = OP_STAT;
1109 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1110 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1111 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1112 return PL_laststatval;
1122 if (PL_op->op_flags & OPf_REF) {
1124 if (cGVOP_gv == PL_defgv) {
1125 if (PL_laststype != OP_LSTAT)
1126 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1127 return PL_laststatval;
1129 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1132 PL_laststype = OP_LSTAT;
1136 sv_setpv(PL_statname,SvPV(sv, n_a));
1137 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1138 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1139 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1140 return PL_laststatval;
1144 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1146 return do_aexec5(really, mark, sp, 0, 0);
1150 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1151 int fd, int do_report)
1153 #ifdef MACOS_TRADITIONAL
1154 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1162 New(401,PL_Argv, sp - mark + 1, char*);
1164 while (++mark <= sp) {
1166 *a++ = SvPVx(*mark, n_a);
1171 if (*PL_Argv[0] != '/') /* will execvp use PATH? */
1172 TAINT_ENV(); /* testing IFS here is overkill, probably */
1173 if (really && *(tmps = SvPV(really, n_a)))
1174 PerlProc_execvp(tmps,PL_Argv);
1176 PerlProc_execvp(PL_Argv[0],PL_Argv);
1177 if (ckWARN(WARN_EXEC))
1178 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1179 PL_Argv[0], Strerror(errno));
1183 PerlLIO_write(fd, (void*)&e, sizeof(int));
1193 Perl_do_execfree(pTHX)
1197 PL_Argv = Null(char **);
1205 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1208 Perl_do_exec(pTHX_ char *cmd)
1210 return do_exec3(cmd,0,0);
1214 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1220 while (*cmd && isSPACE(*cmd))
1223 /* save an extra exec if possible */
1226 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1228 s = cmd+PL_cshlen+3;
1242 if (s[-1] == '\'') {
1244 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1252 /* see if there are shell metacharacters in it */
1254 if (*cmd == '.' && isSPACE(cmd[1]))
1257 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1260 for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
1264 for (s = cmd; *s; s++) {
1265 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1266 if (*s == '\n' && !s[1]) {
1270 /* handle the 2>&1 construct at the end */
1271 if (*s == '>' && s[1] == '&' && s[2] == '1'
1272 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1273 && (!s[3] || isSPACE(s[3])))
1277 while (*t && isSPACE(*t))
1279 if (!*t && (dup2(1,2) != -1)) {
1285 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1290 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1291 PL_Cmd = savepvn(cmd, s-cmd);
1293 for (s = PL_Cmd; *s;) {
1294 while (*s && isSPACE(*s)) s++;
1297 while (*s && !isSPACE(*s)) s++;
1303 PerlProc_execvp(PL_Argv[0],PL_Argv);
1304 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1312 if (ckWARN(WARN_EXEC))
1313 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1314 PL_Argv[0], Strerror(errno));
1316 PerlLIO_write(fd, (void*)&e, sizeof(int));
1325 #endif /* OS2 || WIN32 */
1328 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1333 register I32 tot = 0;
1336 SV **oldmark = mark;
1339 #define APPLY_TAINT_PROPER() \
1341 if (PL_tainted) { TAINT_PROPER(what); } \
1344 /* This is a first heuristic; it doesn't catch tainting magic. */
1346 while (++mark <= sp) {
1347 if (SvTAINTED(*mark)) {
1357 APPLY_TAINT_PROPER();
1360 APPLY_TAINT_PROPER();
1362 while (++mark <= sp) {
1363 char *name = SvPVx(*mark, n_a);
1364 APPLY_TAINT_PROPER();
1365 if (PerlLIO_chmod(name, val))
1373 APPLY_TAINT_PROPER();
1374 if (sp - mark > 2) {
1375 val = SvIVx(*++mark);
1376 val2 = SvIVx(*++mark);
1377 APPLY_TAINT_PROPER();
1379 while (++mark <= sp) {
1380 char *name = SvPVx(*mark, n_a);
1381 APPLY_TAINT_PROPER();
1382 if (PerlLIO_chown(name, val, val2))
1389 XXX Should we make lchown() directly available from perl?
1390 For now, we'll let Configure test for HAS_LCHOWN, but do
1391 nothing in the core.
1397 APPLY_TAINT_PROPER();
1400 s = SvPVx(*++mark, n_a);
1402 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1404 if (!(val = whichsig(s)))
1405 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1409 APPLY_TAINT_PROPER();
1412 /* kill() doesn't do process groups (job trees?) under VMS */
1413 if (val < 0) val = -val;
1414 if (val == SIGKILL) {
1415 # include <starlet.h>
1416 /* Use native sys$delprc() to insure that target process is
1417 * deleted; supervisor-mode images don't pay attention to
1418 * CRTL's emulation of Unix-style signals and kill()
1420 while (++mark <= sp) {
1421 I32 proc = SvIVx(*mark);
1422 register unsigned long int __vmssts;
1423 APPLY_TAINT_PROPER();
1424 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1428 case SS$_NOSUCHNODE:
1429 SETERRNO(ESRCH,__vmssts);
1432 SETERRNO(EPERM,__vmssts);
1435 SETERRNO(EVMSERR,__vmssts);
1444 while (++mark <= sp) {
1445 I32 proc = SvIVx(*mark);
1446 APPLY_TAINT_PROPER();
1448 if (PerlProc_killpg(proc,val)) /* BSD */
1450 if (PerlProc_kill(-proc,val)) /* SYSV */
1456 while (++mark <= sp) {
1457 I32 proc = SvIVx(*mark);
1458 APPLY_TAINT_PROPER();
1459 if (PerlProc_kill(proc, val))
1467 APPLY_TAINT_PROPER();
1469 while (++mark <= sp) {
1470 s = SvPVx(*mark, n_a);
1471 APPLY_TAINT_PROPER();
1472 if (PL_euid || PL_unsafe) {
1476 else { /* don't let root wipe out directories without -U */
1477 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1489 APPLY_TAINT_PROPER();
1490 if (sp - mark > 2) {
1491 #if defined(I_UTIME) || defined(VMS)
1492 struct utimbuf utbuf;
1500 Zero(&utbuf, sizeof utbuf, char);
1502 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1503 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1505 utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */
1506 utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */
1508 APPLY_TAINT_PROPER();
1510 while (++mark <= sp) {
1511 char *name = SvPVx(*mark, n_a);
1512 APPLY_TAINT_PROPER();
1513 if (PerlLIO_utime(name, &utbuf))
1524 #undef APPLY_TAINT_PROPER
1527 /* Do the permissions allow some operation? Assumes statcache already set. */
1528 #ifndef VMS /* VMS' cando is in vms.c */
1530 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1531 /* Note: we use `effective' both for uids and gids.
1532 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1535 /* [Comments and code from Len Reed]
1536 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1537 * to write-protected files. The execute permission bit is set
1538 * by the Miscrosoft C library stat() function for the following:
1543 * All files and directories are readable.
1544 * Directories and special files, e.g. "CON", cannot be
1546 * [Comment by Tom Dinger -- a directory can have the write-protect
1547 * bit set in the file system, but DOS permits changes to
1548 * the directory anyway. In addition, all bets are off
1549 * here for networked software, such as Novell and
1553 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1554 * too so it will actually look into the files for magic numbers
1556 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1558 #else /* ! DOSISH */
1559 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1560 if (mode == S_IXUSR) {
1561 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1565 return TRUE; /* root reads and writes anything */
1568 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1569 if (statbufp->st_mode & mode)
1570 return TRUE; /* ok as "user" */
1572 else if (ingroup(statbufp->st_gid,effective)) {
1573 if (statbufp->st_mode & mode >> 3)
1574 return TRUE; /* ok as "group" */
1576 else if (statbufp->st_mode & mode >> 6)
1577 return TRUE; /* ok as "other" */
1579 #endif /* ! DOSISH */
1584 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1586 #ifdef MACOS_TRADITIONAL
1587 /* This is simply not correct for AppleShare, but fix it yerself. */
1590 if (testgid == (effective ? PL_egid : PL_gid))
1592 #ifdef HAS_GETGROUPS
1597 Groups_t gary[NGROUPS];
1600 anum = getgroups(NGROUPS,gary);
1602 if (gary[anum] == testgid)
1610 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1613 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1619 key = (key_t)SvNVx(*++mark);
1620 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1621 flags = SvIVx(*++mark);
1627 return msgget(key, flags);
1631 return semget(key, n, flags);
1635 return shmget(key, n, flags);
1637 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1639 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1642 return -1; /* should never happen */
1646 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1651 I32 id, n, cmd, infosize, getinfo;
1654 id = SvIVx(*++mark);
1655 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1656 cmd = SvIVx(*++mark);
1659 getinfo = (cmd == IPC_STAT);
1665 if (cmd == IPC_STAT || cmd == IPC_SET)
1666 infosize = sizeof(struct msqid_ds);
1671 if (cmd == IPC_STAT || cmd == IPC_SET)
1672 infosize = sizeof(struct shmid_ds);
1678 if (cmd == IPC_STAT || cmd == IPC_SET)
1679 infosize = sizeof(struct semid_ds);
1680 else if (cmd == GETALL || cmd == SETALL)
1682 struct semid_ds semds;
1686 getinfo = (cmd == GETALL);
1687 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1689 infosize = semds.sem_nsems * sizeof(short);
1690 /* "short" is technically wrong but much more portable
1691 than guessing about u_?short(_t)? */
1694 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1698 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1700 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1709 SvPV_force(astr, len);
1710 a = SvGROW(astr, infosize+1);
1714 a = SvPV(astr, len);
1715 if (len != infosize)
1716 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1725 a = INT2PTR(char *,i); /* ouch */
1732 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1738 union semun unsemds;
1740 unsemds.buf = (struct semid_ds *)a;
1741 ret = Semctl(id, n, cmd, unsemds);
1743 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1750 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1754 if (getinfo && ret >= 0) {
1755 SvCUR_set(astr, infosize);
1756 *SvEND(astr) = '\0';
1763 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1769 I32 id, msize, flags;
1772 id = SvIVx(*++mark);
1774 flags = SvIVx(*++mark);
1775 mbuf = SvPV(mstr, len);
1776 if ((msize = len - sizeof(long)) < 0)
1777 Perl_croak(aTHX_ "Arg too short for msgsnd");
1779 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1781 Perl_croak(aTHX_ "msgsnd not implemented");
1786 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1793 I32 id, msize, flags, ret;
1796 id = SvIVx(*++mark);
1798 msize = SvIVx(*++mark);
1799 mtype = (long)SvIVx(*++mark);
1800 flags = SvIVx(*++mark);
1801 SvPV_force(mstr, len);
1802 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1805 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1807 SvCUR_set(mstr, sizeof(long)+ret);
1808 *SvEND(mstr) = '\0';
1812 Perl_croak(aTHX_ "msgrcv not implemented");
1817 Perl_do_semop(pTHX_ SV **mark, SV **sp)
1826 id = SvIVx(*++mark);
1828 opbuf = SvPV(opstr, opsize);
1829 if (opsize < sizeof(struct sembuf)
1830 || (opsize % sizeof(struct sembuf)) != 0) {
1831 SETERRNO(EINVAL,LIB$_INVARG);
1835 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1837 Perl_croak(aTHX_ "semop not implemented");
1842 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
1848 I32 id, mpos, msize;
1850 struct shmid_ds shmds;
1852 id = SvIVx(*++mark);
1854 mpos = SvIVx(*++mark);
1855 msize = SvIVx(*++mark);
1857 if (shmctl(id, IPC_STAT, &shmds) == -1)
1859 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1860 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1863 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1864 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1866 if (optype == OP_SHMREAD) {
1867 SvPV_force(mstr, len);
1868 mbuf = SvGROW(mstr, msize+1);
1870 Copy(shm + mpos, mbuf, msize, char);
1871 SvCUR_set(mstr, msize);
1872 *SvEND(mstr) = '\0';
1878 mbuf = SvPV(mstr, len);
1879 if ((n = len) > msize)
1881 Copy(mbuf, shm + mpos, n, char);
1883 memzero(shm + mpos + n, msize - n);
1887 Perl_croak(aTHX_ "shm I/O not implemented");
1891 #endif /* SYSV IPC */