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_*.
75 * Sock_size_t is defined identically in pp_sys.c. */
78 # define Sock_size_t socklen_t
80 # if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__)
81 # define Sock_size_t Size_t
83 # define Sock_size_t int
89 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
90 int rawmode, int rawperm, PerlIO *supplied_fp)
92 return do_open9(gv, name, len, as_raw, rawmode, rawperm,
93 supplied_fp, Nullsv, 0);
97 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
98 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
101 register IO *io = GvIOn(gv);
102 PerlIO *saveifp = Nullfp;
103 PerlIO *saveofp = Nullfp;
109 bool was_fdopen = FALSE;
111 PL_forkprocess = 1; /* assume true if no fork */
114 fd = PerlIO_fileno(IoIFP(io));
115 if (IoTYPE(io) == '-')
117 else if (fd <= PL_maxsysfd) {
120 savetype = IoTYPE(io);
123 else if (IoTYPE(io) == '|')
124 result = PerlProc_pclose(IoIFP(io));
125 else if (IoIFP(io) != IoOFP(io)) {
127 result = PerlIO_close(IoOFP(io));
128 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
131 result = PerlIO_close(IoIFP(io));
134 result = PerlIO_close(IoIFP(io));
135 if (result == EOF && fd > PL_maxsysfd)
136 PerlIO_printf(Perl_error_log,
137 "Warning: unable to close filehandle %s properly.\n",
139 IoOFP(io) = IoIFP(io) = Nullfp;
143 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
144 rawmode |= O_LARGEFILE;
148 #define O_ACCMODE 3 /* Assume traditional implementation */
151 switch (result = rawmode & O_ACCMODE) {
164 writing = (result > 0);
165 fd = PerlLIO_open3(name, rawmode, rawperm);
171 if (result == O_RDONLY)
174 else if (rawmode & O_APPEND)
175 fpmode = (result == O_WRONLY) ? "a" : "a+";
178 fpmode = (result == O_WRONLY) ? "w" : "r+";
179 fp = PerlIO_fdopen(fd, fpmode);
189 char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
192 type = savepvn(name, len);
197 name = SvPV(svs, l) ;
199 name = savepvn(name, len);
203 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'", (int)olen, oname);
222 for (type++, tlen--; isSPACE(*type); type++, tlen--) ;
227 if (*name == '\0') { /* command is missing 19990114 */
229 if (ckWARN(WARN_PIPE))
230 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
234 if (strNE(name,"-") || num_svs)
236 TAINT_PROPER("piped open");
237 if (name[len-1] == '|') {
240 if (ckWARN(WARN_PIPE))
241 Perl_warner(aTHX_ WARN_PIPE, "Can't open bidirectional pipe");
243 fp = PerlProc_popen(name,"w");
246 else if (*type == '>') {
247 TAINT_PROPER("open");
250 mode[0] = IoTYPE(io) = 'a';
258 if (num_svs && tlen != 1)
269 if (!*name && supplied_fp)
273 for (; isSPACE(*name); name++) ;
278 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
282 SETERRNO(EINVAL,SS$_IVCHAN);
287 PerlIO *fp = IoIFP(thatio);
288 /* Flush stdio buffer before dup. --mjd
289 * Unfortunately SEEK_CURing 0 seems to
290 * be optimized away on most platforms;
291 * only Solaris and Linux seem to flush
293 PerlIO_seek(fp, 0, SEEK_CUR);
294 /* On the other hand, do all platforms
295 * take gracefully to flushing a read-only
296 * filehandle? Perhaps we should do
297 * fsetpos(src)+fgetpos(dst)? --nik */
299 fd = PerlIO_fileno(fp);
300 if (IoTYPE(thatio) == 's')
307 fd = PerlLIO_dup(fd);
310 if (!(fp = PerlIO_fdopen(fd,mode))) {
318 for (; isSPACE(*type); type++) ;
319 if (strEQ(type,"-")) {
320 fp = PerlIO_stdout();
324 fp = PerlIO_open((num_svs ? name : type), mode);
328 else if (*type == '<') {
329 if (num_svs && tlen != 1)
332 for (type++; isSPACE(*type); type++) ;
338 if (strEQ(type,"-")) {
343 fp = PerlIO_open((num_svs ? name : type), mode);
345 else if (tlen > 1 && type[tlen-1] == '|') {
347 if (tlen != 2 || type[0] != '-')
352 while (tlen && isSPACE(type[tlen-1]))
355 for (; isSPACE(*type); type++) ;
358 if (*name == '\0') { /* command is missing 19990114 */
360 if (ckWARN(WARN_PIPE))
361 Perl_warner(aTHX_ WARN_PIPE, "Missing command in piped open");
365 if (strNE(name,"-") || num_svs)
367 TAINT_PROPER("piped open");
368 fp = PerlProc_popen(name,"r");
377 for (; isSPACE(*name); name++) ;
378 if (strEQ(name,"-")) {
383 fp = PerlIO_open(name,"r");
388 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == '<' && strchr(name, '\n'))
389 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "open");
393 IoTYPE(io) != '|' && IoTYPE(io) != '-') {
395 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
396 (void)PerlIO_close(fp);
399 if (S_ISSOCK(PL_statbuf.st_mode))
400 IoTYPE(io) = 's'; /* in case a socket was passed in to us */
404 !(PL_statbuf.st_mode & S_IFMT)
410 Sock_size_t buflen = sizeof tmpbuf;
411 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
413 || errno != ENOTSOCK)
414 IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
415 /* but some return 0 for streams too, sigh */
419 if (saveifp) { /* must use old fp? */
420 fd = PerlIO_fileno(saveifp);
422 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
423 if (saveofp != saveifp) { /* was a socket? */
424 PerlIO_close(saveofp);
429 if (fd != PerlIO_fileno(fp)) {
433 PerlLIO_dup2(PerlIO_fileno(fp), fd);
434 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
435 (void)SvUPGRADE(sv, SVt_IV);
438 sv = *av_fetch(PL_fdpid,fd,TRUE);
439 (void)SvUPGRADE(sv, SVt_IV);
448 #if defined(HAS_FCNTL) && defined(F_SETFD)
450 int save_errno = errno;
451 fd = PerlIO_fileno(fp);
452 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
457 IoFLAGS(io) &= ~IOf_NOLINE;
460 if (IoTYPE(io) == 's'
461 || (IoTYPE(io) == '>' && S_ISCHR(PL_statbuf.st_mode)) ) {
462 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
476 IoTYPE(io) = savetype;
481 Perl_nextargv(pTHX_ register GV *gv)
484 #ifndef FLEXFILENAMES
493 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
494 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
495 IoFLAGS(io) &= ~IOf_START;
497 if (!PL_argvout_stack)
498 PL_argvout_stack = newAV();
499 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
502 if (PL_filemode & (S_ISUID|S_ISGID)) {
503 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
505 (void)fchmod(PL_lastfd,PL_filemode);
507 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
511 while (av_len(GvAV(gv)) >= 0) {
514 sv = av_shift(GvAV(gv));
516 sv_setsv(GvSV(gv),sv);
517 SvSETMAGIC(GvSV(gv));
518 PL_oldname = SvPVx(GvSV(gv), oldlen);
519 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
521 TAINT_PROPER("inplace open");
522 if (oldlen == 1 && *PL_oldname == '-') {
523 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
524 return IoIFP(GvIOp(gv));
526 #ifndef FLEXFILENAMES
527 filedev = PL_statbuf.st_dev;
528 fileino = PL_statbuf.st_ino;
530 PL_filemode = PL_statbuf.st_mode;
531 fileuid = PL_statbuf.st_uid;
532 filegid = PL_statbuf.st_gid;
533 if (!S_ISREG(PL_filemode)) {
534 if (ckWARN_d(WARN_INPLACE))
535 Perl_warner(aTHX_ WARN_INPLACE,
536 "Can't do inplace edit: %s is not a regular file",
542 char *star = strchr(PL_inplace, '*');
544 char *begin = PL_inplace;
545 sv_setpvn(sv, "", 0);
547 sv_catpvn(sv, begin, star - begin);
548 sv_catpvn(sv, PL_oldname, oldlen);
550 } while ((star = strchr(begin, '*')));
555 sv_catpv(sv,PL_inplace);
557 #ifndef FLEXFILENAMES
558 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
559 && PL_statbuf.st_dev == filedev
560 && PL_statbuf.st_ino == fileino
562 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
566 if (ckWARN_d(WARN_INPLACE))
567 Perl_warner(aTHX_ WARN_INPLACE,
568 "Can't do inplace edit: %s would not be unique",
575 #if !defined(DOSISH) && !defined(__CYGWIN__)
576 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
577 if (ckWARN_d(WARN_INPLACE))
578 Perl_warner(aTHX_ WARN_INPLACE,
579 "Can't rename %s to %s: %s, skipping file",
580 PL_oldname, SvPVX(sv), Strerror(errno) );
586 (void)PerlLIO_unlink(SvPVX(sv));
587 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
588 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
591 (void)UNLINK(SvPVX(sv));
592 if (link(PL_oldname,SvPVX(sv)) < 0) {
593 if (ckWARN_d(WARN_INPLACE))
594 Perl_warner(aTHX_ WARN_INPLACE,
595 "Can't rename %s to %s: %s, skipping file",
596 PL_oldname, SvPVX(sv), Strerror(errno) );
600 (void)UNLINK(PL_oldname);
604 #if !defined(DOSISH) && !defined(AMIGAOS)
605 # ifndef VMS /* Don't delete; use automatic file versioning */
606 if (UNLINK(PL_oldname) < 0) {
607 if (ckWARN_d(WARN_INPLACE))
608 Perl_warner(aTHX_ WARN_INPLACE,
609 "Can't remove %s: %s, skipping file",
610 PL_oldname, Strerror(errno) );
616 Perl_croak(aTHX_ "Can't do inplace edit without backup");
620 sv_setpvn(sv,">",!PL_inplace);
621 sv_catpvn(sv,PL_oldname,oldlen);
622 SETERRNO(0,0); /* in case sprintf set errno */
624 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
625 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
627 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
628 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
631 if (ckWARN_d(WARN_INPLACE))
632 Perl_warner(aTHX_ WARN_INPLACE, "Can't do inplace edit on %s: %s",
633 PL_oldname, Strerror(errno) );
637 setdefout(PL_argvoutgv);
638 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
639 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
641 (void)fchmod(PL_lastfd,PL_filemode);
643 # if !(defined(WIN32) && defined(__BORLANDC__))
644 /* Borland runtime creates a readonly file! */
645 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
648 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
650 (void)fchown(PL_lastfd,fileuid,filegid);
653 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
658 return IoIFP(GvIOp(gv));
662 if (ckWARN_d(WARN_INPLACE)) {
663 if (!S_ISREG(PL_statbuf.st_mode))
664 Perl_warner(aTHX_ WARN_INPLACE,
665 "Can't do inplace edit: %s is not a regular file",
668 Perl_warner(aTHX_ WARN_INPLACE, "Can't open %s: %s",
669 PL_oldname, Strerror(errno));
673 if (io && (IoFLAGS(io) & IOf_ARGV))
674 IoFLAGS(io) |= IOf_START;
676 (void)do_close(PL_argvoutgv,FALSE);
677 if (io && (IoFLAGS(io) & IOf_ARGV)
678 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
680 GV *oldout = (GV*)av_pop(PL_argvout_stack);
682 SvREFCNT_dec(oldout);
685 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
692 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
711 if (PerlProc_pipe(fd) < 0)
713 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
714 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
715 IoIFP(wstio) = IoOFP(wstio);
718 if (!IoIFP(rstio) || !IoOFP(wstio)) {
719 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
720 else PerlLIO_close(fd[0]);
721 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
722 else PerlLIO_close(fd[1]);
726 sv_setsv(sv,&PL_sv_yes);
730 sv_setsv(sv,&PL_sv_undef);
735 /* explicit renamed to avoid C++ conflict -- kja */
737 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
744 if (!gv || SvTYPE(gv) != SVt_PVGV) {
746 SETERRNO(EBADF,SS$_IVCHAN);
750 if (!io) { /* never opened */
753 if (ckWARN(WARN_UNOPENED))
754 Perl_warner(aTHX_ WARN_UNOPENED,
755 "Close on unopened file <%s>",GvENAME(gv));
756 SETERRNO(EBADF,SS$_IVCHAN);
760 retval = io_close(io, not_implicit);
764 IoLINES_LEFT(io) = IoPAGE_LEN(io);
771 Perl_io_close(pTHX_ IO *io, bool not_implicit)
777 if (IoTYPE(io) == '|') {
778 status = PerlProc_pclose(IoIFP(io));
780 STATUS_NATIVE_SET(status);
781 retval = (STATUS_POSIX == 0);
784 retval = (status != -1);
787 else if (IoTYPE(io) == '-')
790 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
791 retval = (PerlIO_close(IoOFP(io)) != EOF);
792 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
795 retval = (PerlIO_close(IoIFP(io)) != EOF);
797 IoOFP(io) = IoIFP(io) = Nullfp;
799 else if (not_implicit) {
800 SETERRNO(EBADF,SS$_IVCHAN);
807 Perl_do_eof(pTHX_ GV *gv)
817 else if (ckWARN(WARN_IO)
818 && (IoTYPE(io) == '>' || IoIFP(io) == PerlIO_stdout()
819 || IoIFP(io) == PerlIO_stderr()))
821 SV* sv = sv_newmortal();
822 gv_efullname3(sv, gv, Nullch);
823 Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for output",
829 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
830 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
831 return FALSE; /* this is the most usual case */
834 ch = PerlIO_getc(IoIFP(io));
836 (void)PerlIO_ungetc(IoIFP(io),ch);
839 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
840 if (PerlIO_get_cnt(IoIFP(io)) < -1)
841 PerlIO_set_cnt(IoIFP(io),-1);
843 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
844 if (!nextargv(PL_argvgv)) /* get another fp handy */
848 return TRUE; /* normal fp, definitely end of file */
854 Perl_do_tell(pTHX_ GV *gv)
859 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
860 #ifdef ULTRIX_STDIO_BOTCH
862 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
864 return PerlIO_tell(fp);
868 if (ckWARN(WARN_UNOPENED))
869 Perl_warner(aTHX_ WARN_UNOPENED, "tell() on unopened file");
871 SETERRNO(EBADF,RMS$_IFI);
876 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
881 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
882 #ifdef ULTRIX_STDIO_BOTCH
884 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
886 return PerlIO_seek(fp, pos, whence) >= 0;
890 if (ckWARN(WARN_UNOPENED))
891 Perl_warner(aTHX_ WARN_UNOPENED, "seek() on unopened file");
893 SETERRNO(EBADF,RMS$_IFI);
898 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
903 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
904 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
907 if (ckWARN(WARN_UNOPENED))
908 Perl_warner(aTHX_ WARN_UNOPENED, "sysseek() on unopened file");
910 SETERRNO(EBADF,RMS$_IFI);
915 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int flag)
918 Perl_croak(aTHX_ "panic: unsetting binmode"); /* Not implemented yet */
920 #if defined(atarist) || defined(__MINT__)
921 if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN))
926 if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) {
927 #if defined(WIN32) && defined(__BORLANDC__)
928 /* The translation mode of the stream is maintained independent
929 * of the translation mode of the fd in the Borland RTL (heavy
930 * digging through their runtime sources reveal). User has to
931 * set the mode explicitly for the stream (though they don't
932 * document this anywhere). GSAR 97-5-24
934 PerlIO_seek(fp,0L,0);
935 ((FILE*)fp)->flags |= _F_BIN;
943 #if defined(USEMYBINMODE)
944 if (my_binmode(fp,iotype) != FALSE)
954 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
955 /* code courtesy of William Kucharski */
958 I32 my_chsize(fd, length)
959 I32 fd; /* file descriptor */
960 Off_t length; /* length to set file to */
965 if (PerlLIO_fstat(fd, &filebuf) < 0)
968 if (filebuf.st_size < length) {
970 /* extend file length */
972 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
975 /* write a "0" byte */
977 if ((PerlLIO_write(fd, "", 1)) != 1)
981 /* truncate length */
986 fl.l_type = F_WRLCK; /* write lock on file space */
989 * This relies on the UNDOCUMENTED F_FREESP argument to
990 * fcntl(2), which truncates the file so that it ends at the
991 * position indicated by fl.l_start.
993 * Will minor miracles never cease?
996 if (fcntl(fd, F_FREESP, &fl) < 0)
1003 #endif /* F_FREESP */
1006 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1008 register char *tmps;
1011 /* assuming fp is checked earlier */
1017 if (SvIOK(sv) && SvIVX(sv) != 0) {
1018 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1019 return !PerlIO_error(fp);
1021 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1022 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1023 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1024 return !PerlIO_error(fp);
1027 switch (SvTYPE(sv)) {
1031 if (ckWARN(WARN_UNINITIALIZED))
1040 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1042 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1043 return !PerlIO_error(fp);
1047 tmps = SvPV(sv, len);
1050 /* To detect whether the process is about to overstep its
1051 * filesize limit we would need getrlimit(). We could then
1052 * also transparently raise the limit with setrlimit() --
1053 * but only until the system hard limit/the filesystem limit,
1054 * at which we would get EPERM. Note that when using buffered
1055 * io the write failure can be delayed until the flush/close. --jhi */
1056 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
1058 return !PerlIO_error(fp);
1068 if (PL_op->op_flags & OPf_REF) {
1073 if (io && IoIFP(io)) {
1075 sv_setpv(PL_statname,"");
1076 PL_laststype = OP_STAT;
1077 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1080 if (tmpgv == PL_defgv)
1081 return PL_laststatval;
1082 if (ckWARN(WARN_UNOPENED))
1083 Perl_warner(aTHX_ WARN_UNOPENED, "Stat on unopened file <%s>",
1086 sv_setpv(PL_statname,"");
1087 return (PL_laststatval = -1);
1095 if (SvTYPE(sv) == SVt_PVGV) {
1099 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1100 tmpgv = (GV*)SvRV(sv);
1106 sv_setpv(PL_statname, s);
1107 PL_laststype = OP_STAT;
1108 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1109 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1110 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "stat");
1111 return PL_laststatval;
1121 if (PL_op->op_flags & OPf_REF) {
1123 if (cGVOP_gv == PL_defgv) {
1124 if (PL_laststype != OP_LSTAT)
1125 Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
1126 return PL_laststatval;
1128 Perl_croak(aTHX_ "You can't use -l on a filehandle");
1131 PL_laststype = OP_LSTAT;
1135 sv_setpv(PL_statname,SvPV(sv, n_a));
1136 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1137 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1138 Perl_warner(aTHX_ WARN_NEWLINE, PL_warn_nl, "lstat");
1139 return PL_laststatval;
1143 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1145 return do_aexec5(really, mark, sp, 0, 0);
1149 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1150 int fd, int do_report)
1152 #ifdef MACOS_TRADITIONAL
1153 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1161 New(401,PL_Argv, sp - mark + 1, char*);
1163 while (++mark <= sp) {
1165 *a++ = SvPVx(*mark, n_a);
1170 if (*PL_Argv[0] != '/') /* will execvp use PATH? */
1171 TAINT_ENV(); /* testing IFS here is overkill, probably */
1172 if (really && *(tmps = SvPV(really, n_a)))
1173 PerlProc_execvp(tmps,PL_Argv);
1175 PerlProc_execvp(PL_Argv[0],PL_Argv);
1176 if (ckWARN(WARN_EXEC))
1177 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1178 PL_Argv[0], Strerror(errno));
1182 PerlLIO_write(fd, (void*)&e, sizeof(int));
1192 Perl_do_execfree(pTHX)
1196 PL_Argv = Null(char **);
1204 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
1207 Perl_do_exec(pTHX_ char *cmd)
1209 return do_exec3(cmd,0,0);
1213 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1219 while (*cmd && isSPACE(*cmd))
1222 /* save an extra exec if possible */
1225 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1227 s = cmd+PL_cshlen+3;
1241 if (s[-1] == '\'') {
1243 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1251 /* see if there are shell metacharacters in it */
1253 if (*cmd == '.' && isSPACE(cmd[1]))
1256 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1259 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1263 for (s = cmd; *s; s++) {
1264 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1265 if (*s == '\n' && !s[1]) {
1269 /* handle the 2>&1 construct at the end */
1270 if (*s == '>' && s[1] == '&' && s[2] == '1'
1271 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1272 && (!s[3] || isSPACE(s[3])))
1276 while (*t && isSPACE(*t))
1278 if (!*t && (dup2(1,2) != -1)) {
1284 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1289 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1290 PL_Cmd = savepvn(cmd, s-cmd);
1292 for (s = PL_Cmd; *s;) {
1293 while (*s && isSPACE(*s)) s++;
1296 while (*s && !isSPACE(*s)) s++;
1302 PerlProc_execvp(PL_Argv[0],PL_Argv);
1303 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1311 if (ckWARN(WARN_EXEC))
1312 Perl_warner(aTHX_ WARN_EXEC, "Can't exec \"%s\": %s",
1313 PL_Argv[0], Strerror(errno));
1315 PerlLIO_write(fd, (void*)&e, sizeof(int));
1324 #endif /* OS2 || WIN32 */
1327 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1332 register I32 tot = 0;
1335 SV **oldmark = mark;
1338 #define APPLY_TAINT_PROPER() \
1340 if (PL_tainted) { TAINT_PROPER(what); } \
1343 /* This is a first heuristic; it doesn't catch tainting magic. */
1345 while (++mark <= sp) {
1346 if (SvTAINTED(*mark)) {
1356 APPLY_TAINT_PROPER();
1359 APPLY_TAINT_PROPER();
1361 while (++mark <= sp) {
1362 char *name = SvPVx(*mark, n_a);
1363 APPLY_TAINT_PROPER();
1364 if (PerlLIO_chmod(name, val))
1372 APPLY_TAINT_PROPER();
1373 if (sp - mark > 2) {
1374 val = SvIVx(*++mark);
1375 val2 = SvIVx(*++mark);
1376 APPLY_TAINT_PROPER();
1378 while (++mark <= sp) {
1379 char *name = SvPVx(*mark, n_a);
1380 APPLY_TAINT_PROPER();
1381 if (PerlLIO_chown(name, val, val2))
1388 XXX Should we make lchown() directly available from perl?
1389 For now, we'll let Configure test for HAS_LCHOWN, but do
1390 nothing in the core.
1396 APPLY_TAINT_PROPER();
1399 s = SvPVx(*++mark, n_a);
1401 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1403 if (!(val = whichsig(s)))
1404 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1408 APPLY_TAINT_PROPER();
1411 /* kill() doesn't do process groups (job trees?) under VMS */
1412 if (val < 0) val = -val;
1413 if (val == SIGKILL) {
1414 # include <starlet.h>
1415 /* Use native sys$delprc() to insure that target process is
1416 * deleted; supervisor-mode images don't pay attention to
1417 * CRTL's emulation of Unix-style signals and kill()
1419 while (++mark <= sp) {
1420 I32 proc = SvIVx(*mark);
1421 register unsigned long int __vmssts;
1422 APPLY_TAINT_PROPER();
1423 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1427 case SS$_NOSUCHNODE:
1428 SETERRNO(ESRCH,__vmssts);
1431 SETERRNO(EPERM,__vmssts);
1434 SETERRNO(EVMSERR,__vmssts);
1443 while (++mark <= sp) {
1444 I32 proc = SvIVx(*mark);
1445 APPLY_TAINT_PROPER();
1447 if (PerlProc_killpg(proc,val)) /* BSD */
1449 if (PerlProc_kill(-proc,val)) /* SYSV */
1455 while (++mark <= sp) {
1456 I32 proc = SvIVx(*mark);
1457 APPLY_TAINT_PROPER();
1458 if (PerlProc_kill(proc, val))
1466 APPLY_TAINT_PROPER();
1468 while (++mark <= sp) {
1469 s = SvPVx(*mark, n_a);
1470 APPLY_TAINT_PROPER();
1471 if (PL_euid || PL_unsafe) {
1475 else { /* don't let root wipe out directories without -U */
1476 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1488 APPLY_TAINT_PROPER();
1489 if (sp - mark > 2) {
1490 #if defined(I_UTIME) || defined(VMS)
1491 struct utimbuf utbuf;
1499 Zero(&utbuf, sizeof utbuf, char);
1501 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1502 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1504 utbuf.actime = (Time_t)SvIVx(*++mark); /* time accessed */
1505 utbuf.modtime = (Time_t)SvIVx(*++mark); /* time modified */
1507 APPLY_TAINT_PROPER();
1509 while (++mark <= sp) {
1510 char *name = SvPVx(*mark, n_a);
1511 APPLY_TAINT_PROPER();
1512 if (PerlLIO_utime(name, &utbuf))
1523 #undef APPLY_TAINT_PROPER
1526 /* Do the permissions allow some operation? Assumes statcache already set. */
1527 #ifndef VMS /* VMS' cando is in vms.c */
1529 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
1530 /* Note: we use `effective' both for uids and gids.
1531 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1534 /* [Comments and code from Len Reed]
1535 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1536 * to write-protected files. The execute permission bit is set
1537 * by the Miscrosoft C library stat() function for the following:
1542 * All files and directories are readable.
1543 * Directories and special files, e.g. "CON", cannot be
1545 * [Comment by Tom Dinger -- a directory can have the write-protect
1546 * bit set in the file system, but DOS permits changes to
1547 * the directory anyway. In addition, all bets are off
1548 * here for networked software, such as Novell and
1552 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1553 * too so it will actually look into the files for magic numbers
1555 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1557 #else /* ! DOSISH */
1558 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1559 if (mode == S_IXUSR) {
1560 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1564 return TRUE; /* root reads and writes anything */
1567 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1568 if (statbufp->st_mode & mode)
1569 return TRUE; /* ok as "user" */
1571 else if (ingroup(statbufp->st_gid,effective)) {
1572 if (statbufp->st_mode & mode >> 3)
1573 return TRUE; /* ok as "group" */
1575 else if (statbufp->st_mode & mode >> 6)
1576 return TRUE; /* ok as "other" */
1578 #endif /* ! DOSISH */
1583 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1585 #ifdef MACOS_TRADITIONAL
1586 /* This is simply not correct for AppleShare, but fix it yerself. */
1589 if (testgid == (effective ? PL_egid : PL_gid))
1591 #ifdef HAS_GETGROUPS
1596 Groups_t gary[NGROUPS];
1599 anum = getgroups(NGROUPS,gary);
1601 if (gary[anum] == testgid)
1609 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1612 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1618 key = (key_t)SvNVx(*++mark);
1619 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1620 flags = SvIVx(*++mark);
1626 return msgget(key, flags);
1630 return semget(key, n, flags);
1634 return shmget(key, n, flags);
1636 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1638 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1641 return -1; /* should never happen */
1645 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1650 I32 id, n, cmd, infosize, getinfo;
1653 id = SvIVx(*++mark);
1654 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1655 cmd = SvIVx(*++mark);
1658 getinfo = (cmd == IPC_STAT);
1664 if (cmd == IPC_STAT || cmd == IPC_SET)
1665 infosize = sizeof(struct msqid_ds);
1670 if (cmd == IPC_STAT || cmd == IPC_SET)
1671 infosize = sizeof(struct shmid_ds);
1677 if (cmd == IPC_STAT || cmd == IPC_SET)
1678 infosize = sizeof(struct semid_ds);
1679 else if (cmd == GETALL || cmd == SETALL)
1681 struct semid_ds semds;
1685 getinfo = (cmd == GETALL);
1686 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1688 infosize = semds.sem_nsems * sizeof(short);
1689 /* "short" is technically wrong but much more portable
1690 than guessing about u_?short(_t)? */
1693 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1697 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1699 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1708 SvPV_force(astr, len);
1709 a = SvGROW(astr, infosize+1);
1713 a = SvPV(astr, len);
1714 if (len != infosize)
1715 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
1724 a = INT2PTR(char *,i); /* ouch */
1731 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1737 union semun unsemds;
1739 unsemds.buf = (struct semid_ds *)a;
1740 ret = Semctl(id, n, cmd, unsemds);
1742 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1749 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1753 if (getinfo && ret >= 0) {
1754 SvCUR_set(astr, infosize);
1755 *SvEND(astr) = '\0';
1762 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
1768 I32 id, msize, flags;
1771 id = SvIVx(*++mark);
1773 flags = SvIVx(*++mark);
1774 mbuf = SvPV(mstr, len);
1775 if ((msize = len - sizeof(long)) < 0)
1776 Perl_croak(aTHX_ "Arg too short for msgsnd");
1778 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1780 Perl_croak(aTHX_ "msgsnd not implemented");
1785 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
1792 I32 id, msize, flags, ret;
1795 id = SvIVx(*++mark);
1797 msize = SvIVx(*++mark);
1798 mtype = (long)SvIVx(*++mark);
1799 flags = SvIVx(*++mark);
1800 SvPV_force(mstr, len);
1801 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1804 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1806 SvCUR_set(mstr, sizeof(long)+ret);
1807 *SvEND(mstr) = '\0';
1811 Perl_croak(aTHX_ "msgrcv not implemented");
1816 Perl_do_semop(pTHX_ SV **mark, SV **sp)
1825 id = SvIVx(*++mark);
1827 opbuf = SvPV(opstr, opsize);
1828 if (opsize < sizeof(struct sembuf)
1829 || (opsize % sizeof(struct sembuf)) != 0) {
1830 SETERRNO(EINVAL,LIB$_INVARG);
1834 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1836 Perl_croak(aTHX_ "semop not implemented");
1841 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
1847 I32 id, mpos, msize;
1849 struct shmid_ds shmds;
1851 id = SvIVx(*++mark);
1853 mpos = SvIVx(*++mark);
1854 msize = SvIVx(*++mark);
1856 if (shmctl(id, IPC_STAT, &shmds) == -1)
1858 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1859 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1862 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1863 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1865 if (optype == OP_SHMREAD) {
1866 SvPV_force(mstr, len);
1867 mbuf = SvGROW(mstr, msize+1);
1869 Copy(shm + mpos, mbuf, msize, char);
1870 SvCUR_set(mstr, msize);
1871 *SvEND(mstr) = '\0';
1877 mbuf = SvPV(mstr, len);
1878 if ((n = len) > msize)
1880 Copy(mbuf, shm + mpos, n, char);
1882 memzero(shm + mpos + n, msize - n);
1886 Perl_croak(aTHX_ "shm I/O not implemented");
1890 #endif /* SYSV IPC */