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>
74 /* Put this after #includes because <unistd.h> defines _XOPEN_*. */
76 # if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__)
77 # define Sock_size_t Size_t
79 # define Sock_size_t int
84 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
85 int rawmode, int rawperm, PerlIO *supplied_fp)
87 return do_open9(gv, name, len, as_raw, rawmode, rawperm,
88 supplied_fp, Nullsv, 0);
92 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
93 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
96 register IO *io = GvIOn(gv);
97 PerlIO *saveifp = Nullfp;
98 PerlIO *saveofp = Nullfp;
104 bool was_fdopen = FALSE;
106 PL_forkprocess = 1; /* assume true if no fork */
109 fd = PerlIO_fileno(IoIFP(io));
110 if (IoTYPE(io) == '-')
112 else if (fd <= PL_maxsysfd) {
115 savetype = IoTYPE(io);
118 else if (IoTYPE(io) == '|')
119 result = PerlProc_pclose(IoIFP(io));
120 else if (IoIFP(io) != IoOFP(io)) {
122 result = PerlIO_close(IoOFP(io));
123 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
126 result = PerlIO_close(IoIFP(io));
129 result = PerlIO_close(IoIFP(io));
130 if (result == EOF && fd > PL_maxsysfd)
131 PerlIO_printf(Perl_error_log,
132 "Warning: unable to close filehandle %s properly.\n",
134 IoOFP(io) = IoIFP(io) = Nullfp;
138 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
139 rawmode |= O_LARGEFILE;
143 #define O_ACCMODE 3 /* Assume traditional implementation */
146 switch (result = rawmode & O_ACCMODE) {
159 writing = (result > 0);
160 fd = PerlLIO_open3(name, rawmode, rawperm);
166 if (result == O_RDONLY)
169 else if (rawmode & O_APPEND)
170 fpmode = (result == O_WRONLY) ? "a" : "a+";
173 fpmode = (result == O_WRONLY) ? "w" : "r+";
174 fp = PerlIO_fdopen(fd, fpmode);
184 char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
187 type = savepvn(name, len);
192 name = SvPV(svs, l) ;
194 name = savepvn(name, len);
198 while (tlen && isSPACE(type[tlen-1]))
203 mode[0] = mode[1] = mode[2] = '\0';
205 if (*type == '+' && tlen > 1 && type[tlen-1] != '|') { /* scary */
212 if (num_svs && (tlen != 2 || type[1] != '-')) {
214 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
217 for (type++, tlen--; isSPACE(*type); type++, tlen--) ;
222 if (*name == '\0') { /* command is missing 19990114 */
224 if (ckWARN(WARN_PIPE))
225 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
229 if (strNE(name,"-") || num_svs)
231 TAINT_PROPER("piped open");
232 if (name[len-1] == '|') {
235 if (ckWARN(WARN_PIPE))
236 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
238 fp = PerlProc_popen(name,"w");
241 else if (*type == '>') {
242 TAINT_PROPER("open");
245 mode[0] = IoTYPE(io) = 'a';
253 if (num_svs && tlen != 1)
264 if (!*name && supplied_fp)
268 for (; isSPACE(*name); name++) ;
273 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
277 SETERRNO(EINVAL,SS$_IVCHAN);
282 PerlIO *fp = IoIFP(thatio);
283 /* Flush stdio buffer before dup. --mjd
284 * Unfortunately SEEK_CURing 0 seems to
285 * be optimized away on most platforms;
286 * only Solaris and Linux seem to flush
288 PerlIO_seek(fp, 0, SEEK_CUR);
289 /* On the other hand, do all platforms
290 * take gracefully to flushing a read-only
291 * filehandle? Perhaps we should do
292 * fsetpos(src)+fgetpos(dst)? --nik */
294 fd = PerlIO_fileno(fp);
295 if (IoTYPE(thatio) == 's')
302 fd = PerlLIO_dup(fd);
305 if (!(fp = PerlIO_fdopen(fd,mode))) {
313 for (; isSPACE(*type); type++) ;
314 if (strEQ(type,"-")) {
315 fp = PerlIO_stdout();
319 fp = PerlIO_open((num_svs ? name : type), mode);
323 else if (*type == '<') {
324 if (num_svs && tlen != 1)
327 for (type++; isSPACE(*type); type++) ;
333 if (strEQ(type,"-")) {
338 fp = PerlIO_open((num_svs ? name : type), mode);
340 else if (tlen > 1 && type[tlen-1] == '|') {
342 if (tlen != 2 || type[0] != '-')
347 while (tlen && isSPACE(type[tlen-1]))
350 for (; isSPACE(*type); type++) ;
353 if (*name == '\0') { /* command is missing 19990114 */
355 if (ckWARN(WARN_PIPE))
356 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
360 if (strNE(name,"-") || num_svs)
362 TAINT_PROPER("piped open");
363 fp = PerlProc_popen(name,"r");
372 for (; isSPACE(*name); name++) ;
373 if (strEQ(name,"-")) {
378 fp = PerlIO_open(name,"r");
383 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == '<' && strchr(name, '\n'))
384 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
388 IoTYPE(io) != '|' && IoTYPE(io) != '-') {
390 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
391 (void)PerlIO_close(fp);
394 if (S_ISSOCK(PL_statbuf.st_mode))
395 IoTYPE(io) = 's'; /* in case a socket was passed in to us */
399 !(PL_statbuf.st_mode & S_IFMT)
405 Sock_size_t buflen = sizeof tmpbuf;
406 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
408 || errno != ENOTSOCK)
409 IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
410 /* but some return 0 for streams too, sigh */
414 if (saveifp) { /* must use old fp? */
415 fd = PerlIO_fileno(saveifp);
417 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
418 if (saveofp != saveifp) { /* was a socket? */
419 PerlIO_close(saveofp);
424 if (fd != PerlIO_fileno(fp)) {
428 PerlLIO_dup2(PerlIO_fileno(fp), fd);
429 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
430 (void)SvUPGRADE(sv, SVt_IV);
433 sv = *av_fetch(PL_fdpid,fd,TRUE);
434 (void)SvUPGRADE(sv, SVt_IV);
443 #if defined(HAS_FCNTL) && defined(F_SETFD)
445 int save_errno = errno;
446 fd = PerlIO_fileno(fp);
447 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
452 IoFLAGS(io) &= ~IOf_NOLINE;
455 if (IoTYPE(io) == 's'
456 || (IoTYPE(io) == '>' && S_ISCHR(PL_statbuf.st_mode)) ) {
457 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
471 IoTYPE(io) = savetype;
476 Perl_nextargv(pTHX_ register GV *gv)
479 #ifndef FLEXFILENAMES
488 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
489 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
490 IoFLAGS(io) &= ~IOf_START;
492 if (!PL_argvout_stack)
493 PL_argvout_stack = newAV();
494 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
497 if (PL_filemode & (S_ISUID|S_ISGID)) {
498 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
500 (void)fchmod(PL_lastfd,PL_filemode);
502 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
506 while (av_len(GvAV(gv)) >= 0) {
509 sv = av_shift(GvAV(gv));
511 sv_setsv(GvSV(gv),sv);
512 SvSETMAGIC(GvSV(gv));
513 PL_oldname = SvPVx(GvSV(gv), oldlen);
514 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
516 TAINT_PROPER("inplace open");
517 if (oldlen == 1 && *PL_oldname == '-') {
518 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
519 return IoIFP(GvIOp(gv));
521 #ifndef FLEXFILENAMES
522 filedev = PL_statbuf.st_dev;
523 fileino = PL_statbuf.st_ino;
525 PL_filemode = PL_statbuf.st_mode;
526 fileuid = PL_statbuf.st_uid;
527 filegid = PL_statbuf.st_gid;
528 if (!S_ISREG(PL_filemode)) {
529 if (ckWARN_d(WARN_INPLACE))
530 Perl_warner(aTHX_ WARN_INPLACE,
531 "Can't do inplace edit: %s is not a regular file",
537 char *star = strchr(PL_inplace, '*');
539 char *begin = PL_inplace;
540 sv_setpvn(sv, "", 0);
542 sv_catpvn(sv, begin, star - begin);
543 sv_catpvn(sv, PL_oldname, oldlen);
545 } while ((star = strchr(begin, '*')));
550 sv_catpv(sv,PL_inplace);
552 #ifndef FLEXFILENAMES
553 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
554 && PL_statbuf.st_dev == filedev
555 && PL_statbuf.st_ino == fileino
557 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
561 if (ckWARN_d(WARN_INPLACE))
562 Perl_warner(aTHX_ WARN_INPLACE,
563 "Can't do inplace edit: %s would not be unique",
570 #if !defined(DOSISH) && !defined(__CYGWIN__)
571 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
572 if (ckWARN_d(WARN_INPLACE))
573 Perl_warner(aTHX_ WARN_INPLACE,
574 "Can't rename %s to %s: %s, skipping file",
575 PL_oldname, SvPVX(sv), Strerror(errno) );
581 (void)PerlLIO_unlink(SvPVX(sv));
582 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
583 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
586 (void)UNLINK(SvPVX(sv));
587 if (link(PL_oldname,SvPVX(sv)) < 0) {
588 if (ckWARN_d(WARN_INPLACE))
589 Perl_warner(aTHX_ WARN_INPLACE,
590 "Can't rename %s to %s: %s, skipping file",
591 PL_oldname, SvPVX(sv), Strerror(errno) );
595 (void)UNLINK(PL_oldname);
599 #if !defined(DOSISH) && !defined(AMIGAOS)
600 # ifndef VMS /* Don't delete; use automatic file versioning */
601 if (UNLINK(PL_oldname) < 0) {
602 if (ckWARN_d(WARN_INPLACE))
603 Perl_warner(aTHX_ WARN_INPLACE,
604 "Can't remove %s: %s, skipping file",
605 PL_oldname, Strerror(errno) );
611 Perl_croak(aTHX_ "Can't do inplace edit without backup");
615 sv_setpvn(sv,">",!PL_inplace);
616 sv_catpvn(sv,PL_oldname,oldlen);
617 SETERRNO(0,0); /* in case sprintf set errno */
619 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
620 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
622 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
623 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
626 if (ckWARN_d(WARN_INPLACE))
627 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
628 PL_oldname, Strerror(errno) );
632 setdefout(PL_argvoutgv);
633 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
634 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
636 (void)fchmod(PL_lastfd,PL_filemode);
638 # if !(defined(WIN32) && defined(__BORLANDC__))
639 /* Borland runtime creates a readonly file! */
640 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
643 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
645 (void)fchown(PL_lastfd,fileuid,filegid);
648 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
653 return IoIFP(GvIOp(gv));
657 if (ckWARN_d(WARN_INPLACE)) {
658 if (!S_ISREG(PL_statbuf.st_mode))
659 Perl_warner(aTHX_ WARN_INPLACE,
660 "Can't do inplace edit: %s is not a regular file",
663 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
664 PL_oldname, Strerror(errno));
668 if (io && (IoFLAGS(io) & IOf_ARGV))
669 IoFLAGS(io) |= IOf_START;
671 (void)do_close(PL_argvoutgv,FALSE);
672 if (io && (IoFLAGS(io) & IOf_ARGV)
673 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
675 GV *oldout = (GV*)av_pop(PL_argvout_stack);
677 SvREFCNT_dec(oldout);
680 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
687 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
706 if (PerlProc_pipe(fd) < 0)
708 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
709 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
710 IoIFP(wstio) = IoOFP(wstio);
713 if (!IoIFP(rstio) || !IoOFP(wstio)) {
714 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
715 else PerlLIO_close(fd[0]);
716 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
717 else PerlLIO_close(fd[1]);
721 sv_setsv(sv,&PL_sv_yes);
725 sv_setsv(sv,&PL_sv_undef);
730 /* explicit renamed to avoid C++ conflict -- kja */
732 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
739 if (!gv || SvTYPE(gv) != SVt_PVGV) {
741 SETERRNO(EBADF,SS$_IVCHAN);
745 if (!io) { /* never opened */
748 if (ckWARN(WARN_UNOPENED))
749 Perl_warner(aTHX_ WARN_UNOPENED,
750 "Close on unopened file <%s>",GvENAME(gv));
751 SETERRNO(EBADF,SS$_IVCHAN);
755 retval = io_close(io, not_implicit);
759 IoLINES_LEFT(io) = IoPAGE_LEN(io);
766 Perl_io_close(pTHX_ IO *io, bool not_implicit)
772 if (IoTYPE(io) == '|') {
773 status = PerlProc_pclose(IoIFP(io));
775 STATUS_NATIVE_SET(status);
776 retval = (STATUS_POSIX == 0);
779 retval = (status != -1);
782 else if (IoTYPE(io) == '-')
785 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
786 retval = (PerlIO_close(IoOFP(io)) != EOF);
787 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
790 retval = (PerlIO_close(IoIFP(io)) != EOF);
792 IoOFP(io) = IoIFP(io) = Nullfp;
794 else if (not_implicit) {
795 SETERRNO(EBADF,SS$_IVCHAN);
802 Perl_do_eof(pTHX_ GV *gv)
812 else if (ckWARN(WARN_IO)
813 && (IoTYPE(io) == '>' || IoIFP(io) == PerlIO_stdout()
814 || IoIFP(io) == PerlIO_stderr()))
816 SV* sv = sv_newmortal();
817 gv_efullname3(sv, gv, Nullch);
818 Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for output",
824 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
825 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
826 return FALSE; /* this is the most usual case */
829 ch = PerlIO_getc(IoIFP(io));
831 (void)PerlIO_ungetc(IoIFP(io),ch);
834 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
835 if (PerlIO_get_cnt(IoIFP(io)) < -1)
836 PerlIO_set_cnt(IoIFP(io),-1);
838 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
839 if (!nextargv(PL_argvgv)) /* get another fp handy */
843 return TRUE; /* normal fp, definitely end of file */
849 Perl_do_tell(pTHX_ GV *gv)
854 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
855 #ifdef ULTRIX_STDIO_BOTCH
857 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
859 return PerlIO_tell(fp);
863 if (ckWARN(WARN_UNOPENED))
864 Perl_warner(aTHX_ WARN_UNOPENED, "tell() on unopened file");
866 SETERRNO(EBADF,RMS$_IFI);
871 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
876 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
877 #ifdef ULTRIX_STDIO_BOTCH
879 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
881 return PerlIO_seek(fp, pos, whence) >= 0;
885 if (ckWARN(WARN_UNOPENED))
886 Perl_warner(aTHX_ WARN_UNOPENED, "seek() on unopened file");
888 SETERRNO(EBADF,RMS$_IFI);
893 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
898 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
899 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
902 if (ckWARN(WARN_UNOPENED))
903 Perl_warner(aTHX_ WARN_UNOPENED, "sysseek() on unopened file");
905 SETERRNO(EBADF,RMS$_IFI);
910 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int flag)
913 Perl_croak(aTHX_ "panic: unsetting binmode"); /* Not implemented yet */
915 #if defined(atarist) || defined(__MINT__)
916 if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN))
921 if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) {
922 #if defined(WIN32) && defined(__BORLANDC__)
923 /* The translation mode of the stream is maintained independent
924 * of the translation mode of the fd in the Borland RTL (heavy
925 * digging through their runtime sources reveal). User has to
926 * set the mode explicitly for the stream (though they don't
927 * document this anywhere). GSAR 97-5-24
929 PerlIO_seek(fp,0L,0);
930 ((FILE*)fp)->flags |= _F_BIN;
938 #if defined(USEMYBINMODE)
939 if (my_binmode(fp,iotype) != FALSE)
949 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
950 /* code courtesy of William Kucharski */
953 I32 my_chsize(fd, length)
954 I32 fd; /* file descriptor */
955 Off_t length; /* length to set file to */
960 if (PerlLIO_fstat(fd, &filebuf) < 0)
963 if (filebuf.st_size < length) {
965 /* extend file length */
967 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
970 /* write a "0" byte */
972 if ((PerlLIO_write(fd, "", 1)) != 1)
976 /* truncate length */
981 fl.l_type = F_WRLCK; /* write lock on file space */
984 * This relies on the UNDOCUMENTED F_FREESP argument to
985 * fcntl(2), which truncates the file so that it ends at the
986 * position indicated by fl.l_start.
988 * Will minor miracles never cease?
991 if (fcntl(fd, F_FREESP, &fl) < 0)
998 #endif /* F_FREESP */
1001 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1003 register char *tmps;
1006 /* assuming fp is checked earlier */
1012 if (SvIOK(sv) && SvIVX(sv) != 0) {
1013 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1014 return !PerlIO_error(fp);
1016 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1017 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1018 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1019 return !PerlIO_error(fp);
1022 switch (SvTYPE(sv)) {
1026 if (ckWARN(WARN_UNINITIALIZED))
1035 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1037 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1038 return !PerlIO_error(fp);
1042 tmps = SvPV(sv, len);
1045 /* To detect whether the process is about to overstep its
1046 * filesize limit we would need getrlimit(). We could then
1047 * also transparently raise the limit with setrlimit() --
1048 * but only until the system hard limit/the filesystem limit,
1049 * at which we would get EPERM. Note that when using buffered
1050 * io the write failure can be delayed until the flush/close. --jhi */
1051 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
1053 return !PerlIO_error(fp);
1063 if (PL_op->op_flags & OPf_REF) {
1068 if (io && IoIFP(io)) {
1070 sv_setpv(PL_statname,"");
1071 PL_laststype = OP_STAT;
1072 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1075 if (tmpgv == PL_defgv)
1076 return PL_laststatval;
1077 if (ckWARN(WARN_UNOPENED))
1078 Perl_warner(aTHX_ WARN_UNOPENED, "Stat on unopened file <%s>",
1081 sv_setpv(PL_statname,"");
1082 return (PL_laststatval = -1);
1090 if (SvTYPE(sv) == SVt_PVGV) {
1094 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1095 tmpgv = (GV*)SvRV(sv);
1101 sv_setpv(PL_statname, s);
1102 PL_laststype = OP_STAT;
1103 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1104 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1105 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1106 return PL_laststatval;
1116 if (PL_op->op_flags & OPf_REF) {
1118 if (cGVOP_gv == PL_defgv) {
1119 if (PL_laststype != OP_LSTAT)
1120 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1121 return PL_laststatval;
1123 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1126 PL_laststype = OP_LSTAT;
1130 sv_setpv(PL_statname,SvPV(sv, n_a));
1131 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1132 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1133 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1134 return PL_laststatval;
1138 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1140 return do_aexec5(really, mark, sp, 0, 0);
1144 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1145 int fd, int do_report)
1147 #ifdef MACOS_TRADITIONAL
1148 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1156 New(401,PL_Argv, sp - mark + 1, char*);
1158 while (++mark <= sp) {
1160 *a++ = SvPVx(*mark, n_a);
1165 if (*PL_Argv[0] != '/') /* will execvp use PATH? */
1166 TAINT_ENV(); /* testing IFS here is overkill, probably */
1167 if (really && *(tmps = SvPV(really, n_a)))
1168 PerlProc_execvp(tmps,PL_Argv);
1170 PerlProc_execvp(PL_Argv[0],PL_Argv);
1171 if (ckWARN(WARN_EXEC))
1172 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1173 PL_Argv[0], Strerror(errno));
1177 PerlLIO_write(fd, (void*)&e, sizeof(int));
1187 Perl_do_execfree(pTHX)
1191 PL_Argv = Null(char **);
1199 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1202 Perl_do_exec(pTHX_ char *cmd)
1204 return do_exec3(cmd,0,0);
1208 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1214 while (*cmd && isSPACE(*cmd))
1217 /* save an extra exec if possible */
1220 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1222 s = cmd+PL_cshlen+3;
1236 if (s[-1] == '\'') {
1238 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1246 /* see if there are shell metacharacters in it */
1248 if (*cmd == '.' && isSPACE(cmd[1]))
1251 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1254 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1258 for (s = cmd; *s; s++) {
1259 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1260 if (*s == '\n' && !s[1]) {
1264 /* handle the 2>&1 construct at the end */
1265 if (*s == '>' && s[1] == '&' && s[2] == '1'
1266 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1267 && (!s[3] || isSPACE(s[3])))
1271 while (*t && isSPACE(*t))
1273 if (!*t && (dup2(1,2) != -1)) {
1279 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1284 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1285 PL_Cmd = savepvn(cmd, s-cmd);
1287 for (s = PL_Cmd; *s;) {
1288 while (*s && isSPACE(*s)) s++;
1291 while (*s && !isSPACE(*s)) s++;
1297 PerlProc_execvp(PL_Argv[0],PL_Argv);
1298 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1306 if (ckWARN(WARN_EXEC))
1307 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1308 PL_Argv[0], Strerror(errno));
1310 PerlLIO_write(fd, (void*)&e, sizeof(int));
1319 #endif /* OS2 || WIN32 */
1322 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1327 register I32 tot = 0;
1330 SV **oldmark = mark;
1333 #define APPLY_TAINT_PROPER() \
1335 if (PL_tainted) { TAINT_PROPER(what); } \
1338 /* This is a first heuristic; it doesn't catch tainting magic. */
1340 while (++mark <= sp) {
1341 if (SvTAINTED(*mark)) {
1351 APPLY_TAINT_PROPER();
1354 APPLY_TAINT_PROPER();
1356 while (++mark <= sp) {
1357 char *name = SvPVx(*mark, n_a);
1358 APPLY_TAINT_PROPER();
1359 if (PerlLIO_chmod(name, val))
1367 APPLY_TAINT_PROPER();
1368 if (sp - mark > 2) {
1369 val = SvIVx(*++mark);
1370 val2 = SvIVx(*++mark);
1371 APPLY_TAINT_PROPER();
1373 while (++mark <= sp) {
1374 char *name = SvPVx(*mark, n_a);
1375 APPLY_TAINT_PROPER();
1376 if (PerlLIO_chown(name, val, val2))
1383 XXX Should we make lchown() directly available from perl?
1384 For now, we'll let Configure test for HAS_LCHOWN, but do
1385 nothing in the core.
1391 APPLY_TAINT_PROPER();
1394 s = SvPVx(*++mark, n_a);
1396 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1398 if (!(val = whichsig(s)))
1399 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1403 APPLY_TAINT_PROPER();
1406 /* kill() doesn't do process groups (job trees?) under VMS */
1407 if (val < 0) val = -val;
1408 if (val == SIGKILL) {
1409 # include <starlet.h>
1410 /* Use native sys$delprc() to insure that target process is
1411 * deleted; supervisor-mode images don't pay attention to
1412 * CRTL's emulation of Unix-style signals and kill()
1414 while (++mark <= sp) {
1415 I32 proc = SvIVx(*mark);
1416 register unsigned long int __vmssts;
1417 APPLY_TAINT_PROPER();
1418 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1422 case SS$_NOSUCHNODE:
1423 SETERRNO(ESRCH,__vmssts);
1426 SETERRNO(EPERM,__vmssts);
1429 SETERRNO(EVMSERR,__vmssts);
1438 while (++mark <= sp) {
1439 I32 proc = SvIVx(*mark);
1440 APPLY_TAINT_PROPER();
1442 if (PerlProc_killpg(proc,val)) /* BSD */
1444 if (PerlProc_kill(-proc,val)) /* SYSV */
1450 while (++mark <= sp) {
1451 I32 proc = SvIVx(*mark);
1452 APPLY_TAINT_PROPER();
1453 if (PerlProc_kill(proc, val))
1461 APPLY_TAINT_PROPER();
1463 while (++mark <= sp) {
1464 s = SvPVx(*mark, n_a);
1465 APPLY_TAINT_PROPER();
1466 if (PL_euid || PL_unsafe) {
1470 else { /* don't let root wipe out directories without -U */
1471 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1483 APPLY_TAINT_PROPER();
1484 if (sp - mark > 2) {
1485 #if defined(I_UTIME) || defined(VMS)
1486 struct utimbuf utbuf;
1494 Zero(&utbuf, sizeof utbuf, char);
1496 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1497 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1499 utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */
1500 utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */
1502 APPLY_TAINT_PROPER();
1504 while (++mark <= sp) {
1505 char *name = SvPVx(*mark, n_a);
1506 APPLY_TAINT_PROPER();
1507 if (PerlLIO_utime(name, &utbuf))
1518 #undef APPLY_TAINT_PROPER
1521 /* Do the permissions allow some operation? Assumes statcache already set. */
1522 #ifndef VMS /* VMS' cando is in vms.c */
1524 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1525 /* Note: we use `effective' both for uids and gids.
1526 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1529 /* [Comments and code from Len Reed]
1530 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1531 * to write-protected files. The execute permission bit is set
1532 * by the Miscrosoft C library stat() function for the following:
1537 * All files and directories are readable.
1538 * Directories and special files, e.g. "CON", cannot be
1540 * [Comment by Tom Dinger -- a directory can have the write-protect
1541 * bit set in the file system, but DOS permits changes to
1542 * the directory anyway. In addition, all bets are off
1543 * here for networked software, such as Novell and
1547 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1548 * too so it will actually look into the files for magic numbers
1550 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1552 #else /* ! DOSISH */
1553 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1554 if (mode == S_IXUSR) {
1555 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1559 return TRUE; /* root reads and writes anything */
1562 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1563 if (statbufp->st_mode & mode)
1564 return TRUE; /* ok as "user" */
1566 else if (ingroup(statbufp->st_gid,effective)) {
1567 if (statbufp->st_mode & mode >> 3)
1568 return TRUE; /* ok as "group" */
1570 else if (statbufp->st_mode & mode >> 6)
1571 return TRUE; /* ok as "other" */
1573 #endif /* ! DOSISH */
1578 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1580 #ifdef MACOS_TRADITIONAL
1581 /* This is simply not correct for AppleShare, but fix it yerself. */
1584 if (testgid == (effective ? PL_egid : PL_gid))
1586 #ifdef HAS_GETGROUPS
1591 Groups_t gary[NGROUPS];
1594 anum = getgroups(NGROUPS,gary);
1596 if (gary[anum] == testgid)
1604 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1607 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1613 key = (key_t)SvNVx(*++mark);
1614 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1615 flags = SvIVx(*++mark);
1621 return msgget(key, flags);
1625 return semget(key, n, flags);
1629 return shmget(key, n, flags);
1631 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1633 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1636 return -1; /* should never happen */
1640 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1645 I32 id, n, cmd, infosize, getinfo;
1648 id = SvIVx(*++mark);
1649 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1650 cmd = SvIVx(*++mark);
1653 getinfo = (cmd == IPC_STAT);
1659 if (cmd == IPC_STAT || cmd == IPC_SET)
1660 infosize = sizeof(struct msqid_ds);
1665 if (cmd == IPC_STAT || cmd == IPC_SET)
1666 infosize = sizeof(struct shmid_ds);
1672 if (cmd == IPC_STAT || cmd == IPC_SET)
1673 infosize = sizeof(struct semid_ds);
1674 else if (cmd == GETALL || cmd == SETALL)
1676 struct semid_ds semds;
1680 getinfo = (cmd == GETALL);
1681 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1683 infosize = semds.sem_nsems * sizeof(short);
1684 /* "short" is technically wrong but much more portable
1685 than guessing about u_?short(_t)? */
1688 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1692 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1694 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1703 SvPV_force(astr, len);
1704 a = SvGROW(astr, infosize+1);
1708 a = SvPV(astr, len);
1709 if (len != infosize)
1710 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1719 a = INT2PTR(char *,i); /* ouch */
1726 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1732 union semun unsemds;
1734 unsemds.buf = (struct semid_ds *)a;
1735 ret = Semctl(id, n, cmd, unsemds);
1737 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1744 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1748 if (getinfo && ret >= 0) {
1749 SvCUR_set(astr, infosize);
1750 *SvEND(astr) = '\0';
1757 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1763 I32 id, msize, flags;
1766 id = SvIVx(*++mark);
1768 flags = SvIVx(*++mark);
1769 mbuf = SvPV(mstr, len);
1770 if ((msize = len - sizeof(long)) < 0)
1771 Perl_croak(aTHX_ "Arg too short for msgsnd");
1773 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1775 Perl_croak(aTHX_ "msgsnd not implemented");
1780 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1787 I32 id, msize, flags, ret;
1790 id = SvIVx(*++mark);
1792 msize = SvIVx(*++mark);
1793 mtype = (long)SvIVx(*++mark);
1794 flags = SvIVx(*++mark);
1795 SvPV_force(mstr, len);
1796 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1799 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1801 SvCUR_set(mstr, sizeof(long)+ret);
1802 *SvEND(mstr) = '\0';
1806 Perl_croak(aTHX_ "msgrcv not implemented");
1811 Perl_do_semop(pTHX_ SV **mark, SV **sp)
1820 id = SvIVx(*++mark);
1822 opbuf = SvPV(opstr, opsize);
1823 if (opsize < sizeof(struct sembuf)
1824 || (opsize % sizeof(struct sembuf)) != 0) {
1825 SETERRNO(EINVAL,LIB$_INVARG);
1829 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1831 Perl_croak(aTHX_ "semop not implemented");
1836 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
1842 I32 id, mpos, msize;
1844 struct shmid_ds shmds;
1846 id = SvIVx(*++mark);
1848 mpos = SvIVx(*++mark);
1849 msize = SvIVx(*++mark);
1851 if (shmctl(id, IPC_STAT, &shmds) == -1)
1853 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1854 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1857 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1858 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1860 if (optype == OP_SHMREAD) {
1861 SvPV_force(mstr, len);
1862 mbuf = SvGROW(mstr, msize+1);
1864 Copy(shm + mpos, mbuf, msize, char);
1865 SvCUR_set(mstr, msize);
1866 *SvEND(mstr) = '\0';
1872 mbuf = SvPV(mstr, len);
1873 if ((n = len) > msize)
1875 Copy(mbuf, shm + mpos, n, char);
1877 memzero(shm + mpos + n, msize - n);
1881 Perl_croak(aTHX_ "shm I/O not implemented");
1885 #endif /* SYSV IPC */