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);
191 char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
196 name = SvPV(svs, tlen) ;
201 myname = savepvn(name, len);
205 while (tlen && isSPACE(type[tlen-1]))
208 mode[0] = mode[1] = mode[2] = '\0';
210 if (*type == '+' && tlen > 1 && type[tlen-1] != '|') { /* scary */
217 if (num_svs && (tlen != 2 || type[1] != '-')) {
219 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", otlen, otype);
222 for (type++; isSPACE(*type); type++) ;
225 if (*name == '\0') { /* command is missing 19990114 */
227 if (ckWARN(WARN_PIPE))
228 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
232 if (strNE(name,"-") || num_svs)
234 TAINT_PROPER("piped open");
235 if (name[strlen(name)-1] == '|') {
237 name[strlen(name)-1] = '\0' ;
238 if (ckWARN(WARN_PIPE))
239 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
241 fp = PerlProc_popen(name,"w");
244 else if (*type == '>') {
245 TAINT_PROPER("open");
248 mode[0] = IoTYPE(io) = 'a';
256 if (num_svs && tlen != 1)
267 if (!*name && supplied_fp)
271 for (; isSPACE(*name); name++) ;
276 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
280 SETERRNO(EINVAL,SS$_IVCHAN);
285 PerlIO *fp = IoIFP(thatio);
286 /* Flush stdio buffer before dup. --mjd
287 * Unfortunately SEEK_CURing 0 seems to
288 * be optimized away on most platforms;
289 * only Solaris and Linux seem to flush
291 PerlIO_seek(fp, 0, SEEK_CUR);
292 /* On the other hand, do all platforms
293 * take gracefully to flushing a read-only
294 * filehandle? Perhaps we should do
295 * fsetpos(src)+fgetpos(dst)? --nik */
297 fd = PerlIO_fileno(fp);
298 if (IoTYPE(thatio) == 's')
305 fd = PerlLIO_dup(fd);
308 if (!(fp = PerlIO_fdopen(fd,mode))) {
316 for (; isSPACE(*type); type++) ;
317 if (strEQ(type,"-")) {
318 fp = PerlIO_stdout();
322 fp = PerlIO_open((num_svs ? name : type), mode);
326 else if (*type == '<') {
327 if (num_svs && tlen != 1)
330 for (type++; isSPACE(*type); type++) ;
336 if (strEQ(type,"-")) {
341 fp = PerlIO_open((num_svs ? name : type), mode);
343 else if (tlen > 1 && type[tlen-1] == '|') {
345 if (tlen != 2 || type[0] != '-')
350 while (tlen && isSPACE(type[tlen-1]))
353 for (; isSPACE(*type); type++) ;
356 if (*name == '\0') { /* command is missing 19990114 */
358 if (ckWARN(WARN_PIPE))
359 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
363 if (strNE(name,"-") || num_svs)
365 TAINT_PROPER("piped open");
366 fp = PerlProc_popen(name,"r");
375 for (; isSPACE(*name); name++) ;
376 if (strEQ(name,"-")) {
381 fp = PerlIO_open(name,"r");
386 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == '<' && strchr(name, '\n'))
387 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
391 IoTYPE(io) != '|' && IoTYPE(io) != '-') {
393 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
394 (void)PerlIO_close(fp);
397 if (S_ISSOCK(PL_statbuf.st_mode))
398 IoTYPE(io) = 's'; /* in case a socket was passed in to us */
402 !(PL_statbuf.st_mode & S_IFMT)
408 Sock_size_t buflen = sizeof tmpbuf;
409 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
411 || errno != ENOTSOCK)
412 IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
413 /* but some return 0 for streams too, sigh */
417 if (saveifp) { /* must use old fp? */
418 fd = PerlIO_fileno(saveifp);
420 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
421 if (saveofp != saveifp) { /* was a socket? */
422 PerlIO_close(saveofp);
427 if (fd != PerlIO_fileno(fp)) {
431 PerlLIO_dup2(PerlIO_fileno(fp), fd);
432 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
433 (void)SvUPGRADE(sv, SVt_IV);
436 sv = *av_fetch(PL_fdpid,fd,TRUE);
437 (void)SvUPGRADE(sv, SVt_IV);
446 #if defined(HAS_FCNTL) && defined(F_SETFD)
448 int save_errno = errno;
449 fd = PerlIO_fileno(fp);
450 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
455 IoFLAGS(io) &= ~IOf_NOLINE;
458 if (IoTYPE(io) == 's'
459 || (IoTYPE(io) == '>' && S_ISCHR(PL_statbuf.st_mode)) ) {
460 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
474 IoTYPE(io) = savetype;
479 Perl_nextargv(pTHX_ register GV *gv)
482 #ifndef FLEXFILENAMES
491 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
492 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
493 IoFLAGS(io) &= ~IOf_START;
495 if (!PL_argvout_stack)
496 PL_argvout_stack = newAV();
497 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
500 if (PL_filemode & (S_ISUID|S_ISGID)) {
501 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
503 (void)fchmod(PL_lastfd,PL_filemode);
505 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
509 while (av_len(GvAV(gv)) >= 0) {
512 sv = av_shift(GvAV(gv));
514 sv_setsv(GvSV(gv),sv);
515 SvSETMAGIC(GvSV(gv));
516 PL_oldname = SvPVx(GvSV(gv), oldlen);
517 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
519 TAINT_PROPER("inplace open");
520 if (oldlen == 1 && *PL_oldname == '-') {
521 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
522 return IoIFP(GvIOp(gv));
524 #ifndef FLEXFILENAMES
525 filedev = PL_statbuf.st_dev;
526 fileino = PL_statbuf.st_ino;
528 PL_filemode = PL_statbuf.st_mode;
529 fileuid = PL_statbuf.st_uid;
530 filegid = PL_statbuf.st_gid;
531 if (!S_ISREG(PL_filemode)) {
532 if (ckWARN_d(WARN_INPLACE))
533 Perl_warner(aTHX_ WARN_INPLACE,
534 "Can't do inplace edit: %s is not a regular file",
540 char *star = strchr(PL_inplace, '*');
542 char *begin = PL_inplace;
543 sv_setpvn(sv, "", 0);
545 sv_catpvn(sv, begin, star - begin);
546 sv_catpvn(sv, PL_oldname, oldlen);
548 } while ((star = strchr(begin, '*')));
553 sv_catpv(sv,PL_inplace);
555 #ifndef FLEXFILENAMES
556 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
557 && PL_statbuf.st_dev == filedev
558 && PL_statbuf.st_ino == fileino
560 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
564 if (ckWARN_d(WARN_INPLACE))
565 Perl_warner(aTHX_ WARN_INPLACE,
566 "Can't do inplace edit: %s would not be unique",
573 #if !defined(DOSISH) && !defined(CYGWIN)
574 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
575 if (ckWARN_d(WARN_INPLACE))
576 Perl_warner(aTHX_ WARN_INPLACE,
577 "Can't rename %s to %s: %s, skipping file",
578 PL_oldname, SvPVX(sv), Strerror(errno) );
584 (void)PerlLIO_unlink(SvPVX(sv));
585 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
586 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
589 (void)UNLINK(SvPVX(sv));
590 if (link(PL_oldname,SvPVX(sv)) < 0) {
591 if (ckWARN_d(WARN_INPLACE))
592 Perl_warner(aTHX_ WARN_INPLACE,
593 "Can't rename %s to %s: %s, skipping file",
594 PL_oldname, SvPVX(sv), Strerror(errno) );
598 (void)UNLINK(PL_oldname);
602 #if !defined(DOSISH) && !defined(AMIGAOS)
603 # ifndef VMS /* Don't delete; use automatic file versioning */
604 if (UNLINK(PL_oldname) < 0) {
605 if (ckWARN_d(WARN_INPLACE))
606 Perl_warner(aTHX_ WARN_INPLACE,
607 "Can't remove %s: %s, skipping file",
608 PL_oldname, Strerror(errno) );
614 Perl_croak(aTHX_ "Can't do inplace edit without backup");
618 sv_setpvn(sv,">",!PL_inplace);
619 sv_catpvn(sv,PL_oldname,oldlen);
620 SETERRNO(0,0); /* in case sprintf set errno */
622 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
623 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
625 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
626 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
629 if (ckWARN_d(WARN_INPLACE))
630 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
631 PL_oldname, Strerror(errno) );
635 setdefout(PL_argvoutgv);
636 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
637 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
639 (void)fchmod(PL_lastfd,PL_filemode);
641 # if !(defined(WIN32) && defined(__BORLANDC__))
642 /* Borland runtime creates a readonly file! */
643 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
646 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
648 (void)fchown(PL_lastfd,fileuid,filegid);
651 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
656 return IoIFP(GvIOp(gv));
660 if (ckWARN_d(WARN_INPLACE)) {
661 if (!S_ISREG(PL_statbuf.st_mode))
662 Perl_warner(aTHX_ WARN_INPLACE,
663 "Can't do inplace edit: %s is not a regular file",
666 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
667 PL_oldname, Strerror(errno));
671 if (io && (IoFLAGS(io) & IOf_ARGV))
672 IoFLAGS(io) |= IOf_START;
674 (void)do_close(PL_argvoutgv,FALSE);
675 if (io && (IoFLAGS(io) & IOf_ARGV)
676 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
678 GV *oldout = (GV*)av_pop(PL_argvout_stack);
680 SvREFCNT_dec(oldout);
683 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
690 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
709 if (PerlProc_pipe(fd) < 0)
711 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
712 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
713 IoIFP(wstio) = IoOFP(wstio);
716 if (!IoIFP(rstio) || !IoOFP(wstio)) {
717 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
718 else PerlLIO_close(fd[0]);
719 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
720 else PerlLIO_close(fd[1]);
724 sv_setsv(sv,&PL_sv_yes);
728 sv_setsv(sv,&PL_sv_undef);
733 /* explicit renamed to avoid C++ conflict -- kja */
735 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
742 if (!gv || SvTYPE(gv) != SVt_PVGV) {
744 SETERRNO(EBADF,SS$_IVCHAN);
748 if (!io) { /* never opened */
751 if (ckWARN(WARN_UNOPENED))
752 Perl_warner(aTHX_ WARN_UNOPENED,
753 "Close on unopened file <%s>",GvENAME(gv));
754 SETERRNO(EBADF,SS$_IVCHAN);
758 retval = io_close(io, not_implicit);
762 IoLINES_LEFT(io) = IoPAGE_LEN(io);
769 Perl_io_close(pTHX_ IO *io, bool not_implicit)
775 if (IoTYPE(io) == '|') {
776 status = PerlProc_pclose(IoIFP(io));
778 STATUS_NATIVE_SET(status);
779 retval = (STATUS_POSIX == 0);
782 retval = (status != -1);
785 else if (IoTYPE(io) == '-')
788 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
789 retval = (PerlIO_close(IoOFP(io)) != EOF);
790 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
793 retval = (PerlIO_close(IoIFP(io)) != EOF);
795 IoOFP(io) = IoIFP(io) = Nullfp;
797 else if (not_implicit) {
798 SETERRNO(EBADF,SS$_IVCHAN);
805 Perl_do_eof(pTHX_ GV *gv)
815 else if (ckWARN(WARN_IO)
816 && (IoTYPE(io) == '>' || IoIFP(io) == PerlIO_stdout()
817 || IoIFP(io) == PerlIO_stderr()))
819 SV* sv = sv_newmortal();
820 gv_efullname3(sv, gv, Nullch);
821 Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for output",
827 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
828 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
829 return FALSE; /* this is the most usual case */
832 ch = PerlIO_getc(IoIFP(io));
834 (void)PerlIO_ungetc(IoIFP(io),ch);
837 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
838 if (PerlIO_get_cnt(IoIFP(io)) < -1)
839 PerlIO_set_cnt(IoIFP(io),-1);
841 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
842 if (!nextargv(PL_argvgv)) /* get another fp handy */
846 return TRUE; /* normal fp, definitely end of file */
852 Perl_do_tell(pTHX_ GV *gv)
857 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
858 #ifdef ULTRIX_STDIO_BOTCH
860 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
862 return PerlIO_tell(fp);
866 if (ckWARN(WARN_UNOPENED))
867 Perl_warner(aTHX_ WARN_UNOPENED, "tell() on unopened file");
869 SETERRNO(EBADF,RMS$_IFI);
874 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
879 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
880 #ifdef ULTRIX_STDIO_BOTCH
882 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
884 return PerlIO_seek(fp, pos, whence) >= 0;
888 if (ckWARN(WARN_UNOPENED))
889 Perl_warner(aTHX_ WARN_UNOPENED, "seek() on unopened file");
891 SETERRNO(EBADF,RMS$_IFI);
896 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
901 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
902 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
905 if (ckWARN(WARN_UNOPENED))
906 Perl_warner(aTHX_ WARN_UNOPENED, "sysseek() on unopened file");
908 SETERRNO(EBADF,RMS$_IFI);
913 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int flag)
916 Perl_croak(aTHX_ "panic: unsetting binmode"); /* Not implemented yet */
918 #if defined(atarist) || defined(__MINT__)
919 if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN))
924 if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) {
925 #if defined(WIN32) && defined(__BORLANDC__)
926 /* The translation mode of the stream is maintained independent
927 * of the translation mode of the fd in the Borland RTL (heavy
928 * digging through their runtime sources reveal). User has to
929 * set the mode explicitly for the stream (though they don't
930 * document this anywhere). GSAR 97-5-24
932 PerlIO_seek(fp,0L,0);
933 ((FILE*)fp)->flags |= _F_BIN;
941 #if defined(USEMYBINMODE)
942 if (my_binmode(fp,iotype) != FALSE)
952 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
953 /* code courtesy of William Kucharski */
956 I32 my_chsize(fd, length)
957 I32 fd; /* file descriptor */
958 Off_t length; /* length to set file to */
963 if (PerlLIO_fstat(fd, &filebuf) < 0)
966 if (filebuf.st_size < length) {
968 /* extend file length */
970 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
973 /* write a "0" byte */
975 if ((PerlLIO_write(fd, "", 1)) != 1)
979 /* truncate length */
984 fl.l_type = F_WRLCK; /* write lock on file space */
987 * This relies on the UNDOCUMENTED F_FREESP argument to
988 * fcntl(2), which truncates the file so that it ends at the
989 * position indicated by fl.l_start.
991 * Will minor miracles never cease?
994 if (fcntl(fd, F_FREESP, &fl) < 0)
1001 #endif /* F_FREESP */
1004 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1006 register char *tmps;
1009 /* assuming fp is checked earlier */
1015 if (SvIOK(sv) && SvIVX(sv) != 0) {
1016 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1017 return !PerlIO_error(fp);
1019 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1020 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1021 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1022 return !PerlIO_error(fp);
1025 switch (SvTYPE(sv)) {
1029 if (ckWARN(WARN_UNINITIALIZED))
1038 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1040 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1041 return !PerlIO_error(fp);
1045 tmps = SvPV(sv, len);
1048 /* To detect whether the process is about to overstep its
1049 * filesize limit we would need getrlimit(). We could then
1050 * also transparently raise the limit with setrlimit() --
1051 * but only until the system hard limit/the filesystem limit,
1052 * at which we would get EPERM. Note that when using buffered
1053 * io the write failure can be delayed until the flush/close. --jhi */
1054 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
1056 return !PerlIO_error(fp);
1066 if (PL_op->op_flags & OPf_REF) {
1071 if (io && IoIFP(io)) {
1073 sv_setpv(PL_statname,"");
1074 PL_laststype = OP_STAT;
1075 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1078 if (tmpgv == PL_defgv)
1079 return PL_laststatval;
1080 if (ckWARN(WARN_UNOPENED))
1081 Perl_warner(aTHX_ WARN_UNOPENED, "Stat on unopened file <%s>",
1084 sv_setpv(PL_statname,"");
1085 return (PL_laststatval = -1);
1093 if (SvTYPE(sv) == SVt_PVGV) {
1097 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1098 tmpgv = (GV*)SvRV(sv);
1104 sv_setpv(PL_statname, s);
1105 PL_laststype = OP_STAT;
1106 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1107 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1108 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1109 return PL_laststatval;
1119 if (PL_op->op_flags & OPf_REF) {
1121 if (cGVOP_gv == PL_defgv) {
1122 if (PL_laststype != OP_LSTAT)
1123 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1124 return PL_laststatval;
1126 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1129 PL_laststype = OP_LSTAT;
1133 sv_setpv(PL_statname,SvPV(sv, n_a));
1134 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1135 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1136 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1137 return PL_laststatval;
1141 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1143 return do_aexec5(really, mark, sp, 0, 0);
1147 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1148 int fd, int do_report)
1150 #ifdef MACOS_TRADITIONAL
1151 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1159 New(401,PL_Argv, sp - mark + 1, char*);
1161 while (++mark <= sp) {
1163 *a++ = SvPVx(*mark, n_a);
1168 if (*PL_Argv[0] != '/') /* will execvp use PATH? */
1169 TAINT_ENV(); /* testing IFS here is overkill, probably */
1170 if (really && *(tmps = SvPV(really, n_a)))
1171 PerlProc_execvp(tmps,PL_Argv);
1173 PerlProc_execvp(PL_Argv[0],PL_Argv);
1174 if (ckWARN(WARN_EXEC))
1175 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1176 PL_Argv[0], Strerror(errno));
1180 PerlLIO_write(fd, (void*)&e, sizeof(int));
1190 Perl_do_execfree(pTHX)
1194 PL_Argv = Null(char **);
1202 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1205 Perl_do_exec(pTHX_ char *cmd)
1207 return do_exec3(cmd,0,0);
1211 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1217 while (*cmd && isSPACE(*cmd))
1220 /* save an extra exec if possible */
1223 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1225 s = cmd+PL_cshlen+3;
1239 if (s[-1] == '\'') {
1241 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1249 /* see if there are shell metacharacters in it */
1251 if (*cmd == '.' && isSPACE(cmd[1]))
1254 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1257 for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
1261 for (s = cmd; *s; s++) {
1262 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1263 if (*s == '\n' && !s[1]) {
1267 /* handle the 2>&1 construct at the end */
1268 if (*s == '>' && s[1] == '&' && s[2] == '1'
1269 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1270 && (!s[3] || isSPACE(s[3])))
1274 while (*t && isSPACE(*t))
1276 if (!*t && (dup2(1,2) != -1)) {
1282 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1287 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1288 PL_Cmd = savepvn(cmd, s-cmd);
1290 for (s = PL_Cmd; *s;) {
1291 while (*s && isSPACE(*s)) s++;
1294 while (*s && !isSPACE(*s)) s++;
1300 PerlProc_execvp(PL_Argv[0],PL_Argv);
1301 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1309 if (ckWARN(WARN_EXEC))
1310 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1311 PL_Argv[0], Strerror(errno));
1313 PerlLIO_write(fd, (void*)&e, sizeof(int));
1322 #endif /* OS2 || WIN32 */
1325 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1330 register I32 tot = 0;
1333 SV **oldmark = mark;
1336 #define APPLY_TAINT_PROPER() \
1338 if (PL_tainted) { TAINT_PROPER(what); } \
1341 /* This is a first heuristic; it doesn't catch tainting magic. */
1343 while (++mark <= sp) {
1344 if (SvTAINTED(*mark)) {
1354 APPLY_TAINT_PROPER();
1357 APPLY_TAINT_PROPER();
1359 while (++mark <= sp) {
1360 char *name = SvPVx(*mark, n_a);
1361 APPLY_TAINT_PROPER();
1362 if (PerlLIO_chmod(name, val))
1370 APPLY_TAINT_PROPER();
1371 if (sp - mark > 2) {
1372 val = SvIVx(*++mark);
1373 val2 = SvIVx(*++mark);
1374 APPLY_TAINT_PROPER();
1376 while (++mark <= sp) {
1377 char *name = SvPVx(*mark, n_a);
1378 APPLY_TAINT_PROPER();
1379 if (PerlLIO_chown(name, val, val2))
1386 XXX Should we make lchown() directly available from perl?
1387 For now, we'll let Configure test for HAS_LCHOWN, but do
1388 nothing in the core.
1394 APPLY_TAINT_PROPER();
1397 s = SvPVx(*++mark, n_a);
1399 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1401 if (!(val = whichsig(s)))
1402 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1406 APPLY_TAINT_PROPER();
1409 /* kill() doesn't do process groups (job trees?) under VMS */
1410 if (val < 0) val = -val;
1411 if (val == SIGKILL) {
1412 # include <starlet.h>
1413 /* Use native sys$delprc() to insure that target process is
1414 * deleted; supervisor-mode images don't pay attention to
1415 * CRTL's emulation of Unix-style signals and kill()
1417 while (++mark <= sp) {
1418 I32 proc = SvIVx(*mark);
1419 register unsigned long int __vmssts;
1420 APPLY_TAINT_PROPER();
1421 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1425 case SS$_NOSUCHNODE:
1426 SETERRNO(ESRCH,__vmssts);
1429 SETERRNO(EPERM,__vmssts);
1432 SETERRNO(EVMSERR,__vmssts);
1441 while (++mark <= sp) {
1442 I32 proc = SvIVx(*mark);
1443 APPLY_TAINT_PROPER();
1445 if (PerlProc_killpg(proc,val)) /* BSD */
1447 if (PerlProc_kill(-proc,val)) /* SYSV */
1453 while (++mark <= sp) {
1454 I32 proc = SvIVx(*mark);
1455 APPLY_TAINT_PROPER();
1456 if (PerlProc_kill(proc, val))
1464 APPLY_TAINT_PROPER();
1466 while (++mark <= sp) {
1467 s = SvPVx(*mark, n_a);
1468 APPLY_TAINT_PROPER();
1469 if (PL_euid || PL_unsafe) {
1473 else { /* don't let root wipe out directories without -U */
1474 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1486 APPLY_TAINT_PROPER();
1487 if (sp - mark > 2) {
1488 #if defined(I_UTIME) || defined(VMS)
1489 struct utimbuf utbuf;
1497 Zero(&utbuf, sizeof utbuf, char);
1499 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1500 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1502 utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */
1503 utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */
1505 APPLY_TAINT_PROPER();
1507 while (++mark <= sp) {
1508 char *name = SvPVx(*mark, n_a);
1509 APPLY_TAINT_PROPER();
1510 if (PerlLIO_utime(name, &utbuf))
1521 #undef APPLY_TAINT_PROPER
1524 /* Do the permissions allow some operation? Assumes statcache already set. */
1525 #ifndef VMS /* VMS' cando is in vms.c */
1527 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1528 /* Note: we use `effective' both for uids and gids.
1529 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1532 /* [Comments and code from Len Reed]
1533 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1534 * to write-protected files. The execute permission bit is set
1535 * by the Miscrosoft C library stat() function for the following:
1540 * All files and directories are readable.
1541 * Directories and special files, e.g. "CON", cannot be
1543 * [Comment by Tom Dinger -- a directory can have the write-protect
1544 * bit set in the file system, but DOS permits changes to
1545 * the directory anyway. In addition, all bets are off
1546 * here for networked software, such as Novell and
1550 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1551 * too so it will actually look into the files for magic numbers
1553 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1555 #else /* ! DOSISH */
1556 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1557 if (mode == S_IXUSR) {
1558 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1562 return TRUE; /* root reads and writes anything */
1565 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1566 if (statbufp->st_mode & mode)
1567 return TRUE; /* ok as "user" */
1569 else if (ingroup(statbufp->st_gid,effective)) {
1570 if (statbufp->st_mode & mode >> 3)
1571 return TRUE; /* ok as "group" */
1573 else if (statbufp->st_mode & mode >> 6)
1574 return TRUE; /* ok as "other" */
1576 #endif /* ! DOSISH */
1581 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1583 #ifdef MACOS_TRADITIONAL
1584 /* This is simply not correct for AppleShare, but fix it yerself. */
1587 if (testgid == (effective ? PL_egid : PL_gid))
1589 #ifdef HAS_GETGROUPS
1594 Groups_t gary[NGROUPS];
1597 anum = getgroups(NGROUPS,gary);
1599 if (gary[anum] == testgid)
1607 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1610 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1616 key = (key_t)SvNVx(*++mark);
1617 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1618 flags = SvIVx(*++mark);
1624 return msgget(key, flags);
1628 return semget(key, n, flags);
1632 return shmget(key, n, flags);
1634 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1636 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1639 return -1; /* should never happen */
1643 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1648 I32 id, n, cmd, infosize, getinfo;
1651 id = SvIVx(*++mark);
1652 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1653 cmd = SvIVx(*++mark);
1656 getinfo = (cmd == IPC_STAT);
1662 if (cmd == IPC_STAT || cmd == IPC_SET)
1663 infosize = sizeof(struct msqid_ds);
1668 if (cmd == IPC_STAT || cmd == IPC_SET)
1669 infosize = sizeof(struct shmid_ds);
1675 if (cmd == IPC_STAT || cmd == IPC_SET)
1676 infosize = sizeof(struct semid_ds);
1677 else if (cmd == GETALL || cmd == SETALL)
1679 struct semid_ds semds;
1683 getinfo = (cmd == GETALL);
1684 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1686 infosize = semds.sem_nsems * sizeof(short);
1687 /* "short" is technically wrong but much more portable
1688 than guessing about u_?short(_t)? */
1691 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1695 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1697 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1706 SvPV_force(astr, len);
1707 a = SvGROW(astr, infosize+1);
1711 a = SvPV(astr, len);
1712 if (len != infosize)
1713 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1722 a = INT2PTR(char *,i); /* ouch */
1729 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1735 union semun unsemds;
1737 unsemds.buf = (struct semid_ds *)a;
1738 ret = Semctl(id, n, cmd, unsemds);
1740 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1747 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1751 if (getinfo && ret >= 0) {
1752 SvCUR_set(astr, infosize);
1753 *SvEND(astr) = '\0';
1760 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1766 I32 id, msize, flags;
1769 id = SvIVx(*++mark);
1771 flags = SvIVx(*++mark);
1772 mbuf = SvPV(mstr, len);
1773 if ((msize = len - sizeof(long)) < 0)
1774 Perl_croak(aTHX_ "Arg too short for msgsnd");
1776 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1778 Perl_croak(aTHX_ "msgsnd not implemented");
1783 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1790 I32 id, msize, flags, ret;
1793 id = SvIVx(*++mark);
1795 msize = SvIVx(*++mark);
1796 mtype = (long)SvIVx(*++mark);
1797 flags = SvIVx(*++mark);
1798 SvPV_force(mstr, len);
1799 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1802 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1804 SvCUR_set(mstr, sizeof(long)+ret);
1805 *SvEND(mstr) = '\0';
1809 Perl_croak(aTHX_ "msgrcv not implemented");
1814 Perl_do_semop(pTHX_ SV **mark, SV **sp)
1823 id = SvIVx(*++mark);
1825 opbuf = SvPV(opstr, opsize);
1826 if (opsize < sizeof(struct sembuf)
1827 || (opsize % sizeof(struct sembuf)) != 0) {
1828 SETERRNO(EINVAL,LIB$_INVARG);
1832 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1834 Perl_croak(aTHX_ "semop not implemented");
1839 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
1845 I32 id, mpos, msize;
1847 struct shmid_ds shmds;
1849 id = SvIVx(*++mark);
1851 mpos = SvIVx(*++mark);
1852 msize = SvIVx(*++mark);
1854 if (shmctl(id, IPC_STAT, &shmds) == -1)
1856 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1857 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1860 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1861 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1863 if (optype == OP_SHMREAD) {
1864 SvPV_force(mstr, len);
1865 mbuf = SvGROW(mstr, msize+1);
1867 Copy(shm + mpos, mbuf, msize, char);
1868 SvCUR_set(mstr, msize);
1869 *SvEND(mstr) = '\0';
1875 mbuf = SvPV(mstr, len);
1876 if ((n = len) > msize)
1878 Copy(mbuf, shm + mpos, n, char);
1880 memzero(shm + mpos + n, msize - n);
1884 Perl_croak(aTHX_ "shm I/O not implemented");
1888 #endif /* SYSV IPC */