3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "Far below them they saw the white waters pour into a foaming bowl, and
13 * then swirl darkly about a deep oval basin in the rocks, until they found
14 * their way out again through a narrow gate, and flowed away, fuming and
15 * chattering, into calmer and more level reaches."
18 /* This file contains functions that do the actual I/O on behalf of ops.
19 * For example, pp_print() calls the do_print() function in this file for
20 * each argument needing printing.
24 #define PERL_IN_DOIO_C
27 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
36 # ifndef HAS_SHMAT_PROTOTYPE
37 extern Shmat_t shmat (int, char *, int);
43 # if defined(_MSC_VER) || defined(__MINGW32__)
44 # include <sys/utime.h>
51 # define OPEN_EXCL O_EXCL
56 #define PERL_MODE_MAX 8
57 #define PERL_FLAGS_MAX 10
62 Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
63 int rawmode, int rawperm, PerlIO *supplied_fp)
65 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
66 supplied_fp, (SV **) NULL, 0);
70 Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
71 int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
74 PERL_UNUSED_ARG(num_svs);
75 return do_openn(gv, name, len, as_raw, rawmode, rawperm,
76 supplied_fp, &svs, 1);
80 Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
81 int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
85 register IO * const io = GvIOn(gv);
86 PerlIO *saveifp = Nullfp;
87 PerlIO *saveofp = Nullfp;
89 char savetype = IoTYPE_CLOSED;
94 bool was_fdopen = FALSE;
95 bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
97 char mode[PERL_MODE_MAX]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
100 Zero(mode,sizeof(mode),char);
101 PL_forkprocess = 1; /* assume true if no fork */
103 /* Collect default raw/crlf info from the op */
104 if (PL_op && PL_op->op_type == OP_OPEN) {
105 /* set up IO layers */
106 const U8 flags = PL_op->op_private;
107 in_raw = (flags & OPpOPEN_IN_RAW);
108 in_crlf = (flags & OPpOPEN_IN_CRLF);
109 out_raw = (flags & OPpOPEN_OUT_RAW);
110 out_crlf = (flags & OPpOPEN_OUT_CRLF);
113 /* If currently open - close before we re-open */
115 fd = PerlIO_fileno(IoIFP(io));
116 if (IoTYPE(io) == IoTYPE_STD) {
117 /* This is a clone of one of STD* handles */
120 else if (fd >= 0 && fd <= PL_maxsysfd) {
121 /* This is one of the original STD* handles */
124 savetype = IoTYPE(io);
128 else if (IoTYPE(io) == IoTYPE_PIPE)
129 result = PerlProc_pclose(IoIFP(io));
130 else if (IoIFP(io) != IoOFP(io)) {
132 result = PerlIO_close(IoOFP(io));
133 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
136 result = PerlIO_close(IoIFP(io));
139 result = PerlIO_close(IoIFP(io));
140 if (result == EOF && fd > PL_maxsysfd) {
141 /* Why is this not Perl_warn*() call ? */
142 PerlIO_printf(Perl_error_log,
143 "Warning: unable to close filehandle %s properly.\n",
146 IoOFP(io) = IoIFP(io) = Nullfp;
150 /* sysopen style args, i.e. integer mode and permissions */
152 const int appendtrunc =
154 #ifdef O_APPEND /* Not fully portable. */
157 #ifdef O_TRUNC /* Not fully portable. */
161 const int modifyingmode = O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
165 Perl_croak(aTHX_ "panic: sysopen with multiple args");
173 It might be (in OS/390 and Mac OS Classic it is)
179 This means that simple & with O_RDWR would look
180 like O_RDONLY is present. Therefore we have to
183 if ((ismodifying = (rawmode & modifyingmode))) {
184 if ((ismodifying & O_WRONLY) == O_WRONLY ||
185 (ismodifying & O_RDWR) == O_RDWR ||
186 (ismodifying & (O_CREAT|appendtrunc)))
187 TAINT_PROPER("sysopen");
189 mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */
191 #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
192 rawmode |= O_LARGEFILE; /* Transparently largefiley. */
195 IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
197 namesv = sv_2mortal(newSVpvn(name,strlen(name)));
201 fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
204 /* Regular (non-sys) open */
209 PerlIO *that_fp = NULL;
211 type = savepvn(name, len);
215 /* Lose leading and trailing white space */
216 for (; isSPACE(*type); type++) ;
217 while (tend > type && isSPACE(tend[-1]))
221 /* New style explicit name, type is just mode and layer info */
223 if (SvROK(*svp) && !strchr(name,'&')) {
225 Perl_warner(aTHX_ packWARN(WARN_IO),
226 "Can't open a reference");
227 SETERRNO(EINVAL, LIB_INVARG);
230 #endif /* USE_STDIO */
231 name = SvOK(*svp) ? savesvpv (*svp) : savepvn ("", 0);
239 if ((*type == IoTYPE_RDWR) && /* scary */
240 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
241 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
242 TAINT_PROPER("open");
247 if (*type == IoTYPE_PIPE) {
249 if (type[1] != IoTYPE_STD) {
251 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
255 for (type++; isSPACE(*type); type++) ;
261 /* command is missing 19990114 */
262 if (ckWARN(WARN_PIPE))
263 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
267 if ((*name == '-' && name[1] == '\0') || num_svs)
269 TAINT_PROPER("piped open");
270 if (!num_svs && name[len-1] == '|') {
272 if (ckWARN(WARN_PIPE))
273 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
279 strlcat(mode, "b", PERL_MODE_MAX);
281 strlcat(mode, "t", PERL_MODE_MAX);
289 fp = PerlProc_popen_list(mode, num_svs, svp);
292 fp = PerlProc_popen(name,mode);
296 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
302 else if (*type == IoTYPE_WRONLY) {
303 TAINT_PROPER("open");
305 if (*type == IoTYPE_WRONLY) {
306 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
307 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
317 strlcat(mode, "b", PERL_MODE_MAX);
319 strlcat(mode, "t", PERL_MODE_MAX);
328 dodup = PERLIO_DUP_FD;
334 if (!num_svs && !*type && supplied_fp) {
335 /* "<+&" etc. is used by typemaps */
340 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
342 for (; isSPACE(*type); type++) ;
343 if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) {
347 else if (isDIGIT(*type)) {
353 thatio = sv_2io(*svp);
357 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
358 thatio = GvIO(thatgv);
362 SETERRNO(EINVAL,SS_IVCHAN);
366 if ((that_fp = IoIFP(thatio))) {
367 /* Flush stdio buffer before dup. --mjd
368 * Unfortunately SEEK_CURing 0 seems to
369 * be optimized away on most platforms;
370 * only Solaris and Linux seem to flush
373 /* sfio fails to clear error on next
374 sfwrite, contrary to documentation.
376 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
377 PerlIO_clearerr(that_fp);
379 /* On the other hand, do all platforms
380 * take gracefully to flushing a read-only
381 * filehandle? Perhaps we should do
382 * fsetpos(src)+fgetpos(dst)? --nik */
383 PerlIO_flush(that_fp);
384 fd = PerlIO_fileno(that_fp);
385 /* When dup()ing STDIN, STDOUT or STDERR
386 * explicitly set appropriate access mode */
387 if (that_fp == PerlIO_stdout()
388 || that_fp == PerlIO_stderr())
389 IoTYPE(io) = IoTYPE_WRONLY;
390 else if (that_fp == PerlIO_stdin())
391 IoTYPE(io) = IoTYPE_RDONLY;
392 /* When dup()ing a socket, say result is
394 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
395 IoTYPE(io) = IoTYPE_SOCKET;
403 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
407 fd = PerlLIO_dup(fd);
410 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
418 for (; isSPACE(*type); type++) ;
419 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
421 fp = PerlIO_stdout();
422 IoTYPE(io) = IoTYPE_STD;
424 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
429 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
434 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
437 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
438 goto unknown_open_mode;
439 } /* IoTYPE_WRONLY */
440 else if (*type == IoTYPE_RDONLY) {
441 for (type++; isSPACE(*type); type++) ;
445 strlcat(mode, "b", PERL_MODE_MAX);
447 strlcat(mode, "t", PERL_MODE_MAX);
457 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
460 IoTYPE(io) = IoTYPE_STD;
462 Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
467 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
472 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
474 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
475 goto unknown_open_mode;
476 } /* IoTYPE_RDONLY */
477 else if ((num_svs && /* '-|...' or '...|' */
478 type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
479 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
481 type += 2; /* skip over '-|' */
485 while (tend > type && isSPACE(tend[-1]))
487 for (; isSPACE(*type); type++)
493 /* command is missing 19990114 */
494 if (ckWARN(WARN_PIPE))
495 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
499 if (!(*name == '-' && name[1] == '\0') || num_svs)
501 TAINT_PROPER("piped open");
506 strlcat(mode, "b", PERL_MODE_MAX);
508 strlcat(mode, "t", PERL_MODE_MAX);
517 fp = PerlProc_popen_list(mode,num_svs,svp);
520 fp = PerlProc_popen(name,mode);
522 IoTYPE(io) = IoTYPE_PIPE;
524 for (; isSPACE(*type); type++) ;
526 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
532 else { /* layer(Args) */
534 goto unknown_open_mode;
536 IoTYPE(io) = IoTYPE_RDONLY;
537 for (; isSPACE(*name); name++)
543 strlcat(mode, "b", PERL_MODE_MAX);
545 strlcat(mode, "t", PERL_MODE_MAX);
553 if (*name == '-' && name[1] == '\0') {
555 IoTYPE(io) = IoTYPE_STD;
559 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
564 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
569 if (IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n')
570 && ckWARN(WARN_NEWLINE)
572 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
576 if (ckWARN(WARN_IO)) {
577 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
578 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
579 Perl_warner(aTHX_ packWARN(WARN_IO),
580 "Filehandle STD%s reopened as %s only for input",
581 ((fp == PerlIO_stdout()) ? "OUT" : "ERR"),
584 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
585 Perl_warner(aTHX_ packWARN(WARN_IO),
586 "Filehandle STDIN reopened as %s only for output",
591 fd = PerlIO_fileno(fp);
592 /* If there is no fd (e.g. PerlIO::scalar) assume it isn't a
593 * socket - this covers PerlIO::scalar - otherwise unless we "know" the
594 * type probe for socket-ness.
596 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
597 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
598 /* If PerlIO claims to have fd we had better be able to fstat() it. */
599 (void) PerlIO_close(fp);
603 if (S_ISSOCK(PL_statbuf.st_mode))
604 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
608 !(PL_statbuf.st_mode & S_IFMT)
612 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
613 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
614 ) { /* on OS's that return 0 on fstat()ed pipe */
616 Sock_size_t buflen = sizeof tmpbuf;
617 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
618 || errno != ENOTSOCK)
619 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
620 /* but some return 0 for streams too, sigh */
622 #endif /* HAS_SOCKET */
623 #endif /* !PERL_MICRO */
627 * If this is a standard handle we discard all the layer stuff
628 * and just dup the fd into whatever was on the handle before !
631 if (saveifp) { /* must use old fp? */
632 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
633 then dup the new fileno down
636 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
637 if (saveofp != saveifp) { /* was a socket? */
638 PerlIO_close(saveofp);
642 /* Still a small can-of-worms here if (say) PerlIO::scalar
643 is assigned to (say) STDOUT - for now let dup2() fail
644 and provide the error
646 if (PerlLIO_dup2(fd, savefd) < 0) {
647 (void)PerlIO_close(fp);
651 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
652 char newname[FILENAME_MAX+1];
653 if (PerlIO_getname(fp, newname)) {
654 if (fd == PerlIO_fileno(PerlIO_stdout()))
655 Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
656 if (fd == PerlIO_fileno(PerlIO_stderr()))
657 Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
663 /* PL_fdpid isn't used on Windows, so avoid this useless work.
664 * XXX Probably the same for a lot of other places. */
670 sv = *av_fetch(PL_fdpid,fd,TRUE);
671 SvUPGRADE(sv, SVt_IV);
674 sv = *av_fetch(PL_fdpid,savefd,TRUE);
675 SvUPGRADE(sv, SVt_IV);
682 /* need to close fp without closing underlying fd */
683 int ofd = PerlIO_fileno(fp);
684 int dupfd = PerlLIO_dup(ofd);
685 #if defined(HAS_FCNTL) && defined(F_SETFD)
686 /* Assume if we have F_SETFD we have F_GETFD */
687 int coe = fcntl(ofd,F_GETFD);
690 PerlLIO_dup2(dupfd,ofd);
691 #if defined(HAS_FCNTL) && defined(F_SETFD)
692 /* The dup trick has lost close-on-exec on ofd */
693 fcntl(ofd,F_SETFD, coe);
695 PerlLIO_close(dupfd);
702 fd = PerlIO_fileno(fp);
704 #if defined(HAS_FCNTL) && defined(F_SETFD)
706 int save_errno = errno;
707 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
713 IoFLAGS(io) &= ~IOf_NOLINE;
715 if (IoTYPE(io) == IoTYPE_SOCKET
716 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
718 if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC)
721 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,svp))) {
735 IoTYPE(io) = savetype;
740 Perl_nextargv(pTHX_ register GV *gv)
743 #ifndef FLEXFILENAMES
752 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
753 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
754 IoFLAGS(io) &= ~IOf_START;
756 if (!PL_argvout_stack)
757 PL_argvout_stack = newAV();
758 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
761 if (PL_filemode & (S_ISUID|S_ISGID)) {
762 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
765 (void)fchmod(PL_lastfd,PL_filemode);
767 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
774 while (av_len(GvAV(gv)) >= 0) {
776 sv = av_shift(GvAV(gv));
778 sv_setsv(GvSVn(gv),sv);
779 SvSETMAGIC(GvSV(gv));
780 PL_oldname = SvPVx(GvSV(gv), oldlen);
781 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
783 TAINT_PROPER("inplace open");
784 if (oldlen == 1 && *PL_oldname == '-') {
785 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
786 return IoIFP(GvIOp(gv));
788 #ifndef FLEXFILENAMES
789 filedev = PL_statbuf.st_dev;
790 fileino = PL_statbuf.st_ino;
792 PL_filemode = PL_statbuf.st_mode;
793 fileuid = PL_statbuf.st_uid;
794 filegid = PL_statbuf.st_gid;
795 if (!S_ISREG(PL_filemode)) {
796 if (ckWARN_d(WARN_INPLACE))
797 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
798 "Can't do inplace edit: %s is not a regular file",
804 char *star = strchr(PL_inplace, '*');
806 char *begin = PL_inplace;
807 sv_setpvn(sv, "", 0);
809 sv_catpvn(sv, begin, star - begin);
810 sv_catpvn(sv, PL_oldname, oldlen);
812 } while ((star = strchr(begin, '*')));
817 sv_catpv(sv,PL_inplace);
819 #ifndef FLEXFILENAMES
820 if ((PerlLIO_stat(SvPVX_const(sv),&PL_statbuf) >= 0
821 && PL_statbuf.st_dev == filedev
822 && PL_statbuf.st_ino == fileino)
824 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
828 if (ckWARN_d(WARN_INPLACE))
829 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
830 "Can't do inplace edit: %"SVf" would not be unique",
837 #if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
838 if (PerlLIO_rename(PL_oldname,SvPVX_const(sv)) < 0) {
839 if (ckWARN_d(WARN_INPLACE))
840 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
841 "Can't rename %s to %"SVf": %s, skipping file",
842 PL_oldname, sv, Strerror(errno) );
848 (void)PerlLIO_unlink(SvPVX_const(sv));
849 (void)PerlLIO_rename(PL_oldname,SvPVX_const(sv));
850 do_open(gv,(char*)SvPVX_const(sv),SvCUR(sv),PL_inplace!=0,
854 (void)UNLINK(SvPVX_const(sv));
855 if (link(PL_oldname,SvPVX_const(sv)) < 0) {
856 if (ckWARN_d(WARN_INPLACE))
857 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
858 "Can't rename %s to %"SVf": %s, skipping file",
859 PL_oldname, sv, Strerror(errno) );
863 (void)UNLINK(PL_oldname);
867 #if !defined(DOSISH) && !defined(AMIGAOS)
868 # ifndef VMS /* Don't delete; use automatic file versioning */
869 if (UNLINK(PL_oldname) < 0) {
870 if (ckWARN_d(WARN_INPLACE))
871 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
872 "Can't remove %s: %s, skipping file",
873 PL_oldname, Strerror(errno) );
879 Perl_croak(aTHX_ "Can't do inplace edit without backup");
883 sv_setpvn(sv,">",!PL_inplace);
884 sv_catpvn(sv,PL_oldname,oldlen);
885 SETERRNO(0,0); /* in case sprintf set errno */
887 if (!do_open(PL_argvoutgv,(char*)SvPVX_const(sv),SvCUR(sv),
888 PL_inplace!=0,O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
890 if (!do_open(PL_argvoutgv,(char*)SvPVX_const(sv),SvCUR(sv),
891 PL_inplace!=0,O_WRONLY|O_CREAT|OPEN_EXCL,0666,
895 if (ckWARN_d(WARN_INPLACE))
896 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
897 PL_oldname, Strerror(errno) );
901 setdefout(PL_argvoutgv);
902 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
903 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
905 (void)fchmod(PL_lastfd,PL_filemode);
907 # if !(defined(WIN32) && defined(__BORLANDC__))
908 /* Borland runtime creates a readonly file! */
909 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
912 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
914 (void)fchown(PL_lastfd,fileuid,filegid);
917 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
922 return IoIFP(GvIOp(gv));
925 if (ckWARN_d(WARN_INPLACE)) {
926 const int eno = errno;
927 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
928 && !S_ISREG(PL_statbuf.st_mode))
930 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
931 "Can't do inplace edit: %s is not a regular file",
935 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
936 PL_oldname, Strerror(eno));
940 if (io && (IoFLAGS(io) & IOf_ARGV))
941 IoFLAGS(io) |= IOf_START;
943 (void)do_close(PL_argvoutgv,FALSE);
944 if (io && (IoFLAGS(io) & IOf_ARGV)
945 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
947 GV *oldout = (GV*)av_pop(PL_argvout_stack);
949 SvREFCNT_dec(oldout);
952 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
959 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
978 if (PerlProc_pipe(fd) < 0)
980 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
981 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
982 IoOFP(rstio) = IoIFP(rstio);
983 IoIFP(wstio) = IoOFP(wstio);
984 IoTYPE(rstio) = IoTYPE_RDONLY;
985 IoTYPE(wstio) = IoTYPE_WRONLY;
986 if (!IoIFP(rstio) || !IoOFP(wstio)) {
987 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
988 else PerlLIO_close(fd[0]);
989 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
990 else PerlLIO_close(fd[1]);
994 sv_setsv(sv,&PL_sv_yes);
998 sv_setsv(sv,&PL_sv_undef);
1003 /* explicit renamed to avoid C++ conflict -- kja */
1005 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
1012 if (!gv || SvTYPE(gv) != SVt_PVGV) {
1014 SETERRNO(EBADF,SS_IVCHAN);
1018 if (!io) { /* never opened */
1020 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
1021 report_evil_fh(gv, io, PL_op->op_type);
1022 SETERRNO(EBADF,SS_IVCHAN);
1026 retval = io_close(io, not_implicit);
1030 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1032 IoTYPE(io) = IoTYPE_CLOSED;
1037 Perl_io_close(pTHX_ IO *io, bool not_implicit)
1039 bool retval = FALSE;
1042 if (IoTYPE(io) == IoTYPE_PIPE) {
1043 const int status = PerlProc_pclose(IoIFP(io));
1045 STATUS_NATIVE_SET(status);
1046 retval = (STATUS_UNIX == 0);
1049 retval = (status != -1);
1052 else if (IoTYPE(io) == IoTYPE_STD)
1055 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
1056 bool prev_err = PerlIO_error(IoOFP(io));
1057 retval = (PerlIO_close(IoOFP(io)) != EOF && !prev_err);
1058 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
1061 bool prev_err = PerlIO_error(IoIFP(io));
1062 retval = (PerlIO_close(IoIFP(io)) != EOF && !prev_err);
1065 IoOFP(io) = IoIFP(io) = Nullfp;
1067 else if (not_implicit) {
1068 SETERRNO(EBADF,SS_IVCHAN);
1075 Perl_do_eof(pTHX_ GV *gv)
1084 else if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
1085 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1090 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
1091 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
1092 return FALSE; /* this is the most usual case */
1095 saverrno = errno; /* getc and ungetc can stomp on errno */
1096 ch = PerlIO_getc(IoIFP(io));
1098 (void)PerlIO_ungetc(IoIFP(io),ch);
1104 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
1105 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1106 PerlIO_set_cnt(IoIFP(io),-1);
1108 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
1109 if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
1113 return TRUE; /* normal fp, definitely end of file */
1119 Perl_do_tell(pTHX_ GV *gv)
1121 register IO *io = 0;
1122 register PerlIO *fp;
1124 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1125 #ifdef ULTRIX_STDIO_BOTCH
1127 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1129 return PerlIO_tell(fp);
1131 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1132 report_evil_fh(gv, io, PL_op->op_type);
1133 SETERRNO(EBADF,RMS_IFI);
1138 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1140 register IO *io = 0;
1141 register PerlIO *fp;
1143 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1144 #ifdef ULTRIX_STDIO_BOTCH
1146 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1148 return PerlIO_seek(fp, pos, whence) >= 0;
1150 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1151 report_evil_fh(gv, io, PL_op->op_type);
1152 SETERRNO(EBADF,RMS_IFI);
1157 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1159 register IO *io = 0;
1160 register PerlIO *fp;
1162 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1163 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1164 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1165 report_evil_fh(gv, io, PL_op->op_type);
1166 SETERRNO(EBADF,RMS_IFI);
1171 Perl_mode_from_discipline(pTHX_ SV *discp)
1173 int mode = O_BINARY;
1176 const char *s = SvPV_const(discp,len);
1181 if (s[2] == 'a' && s[3] == 'w'
1182 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1191 if (s[2] == 'r' && s[3] == 'l' && s[4] == 'f'
1192 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1201 goto fail_discipline;
1204 else if (isSPACE(*s)) {
1211 end = strchr(s+1, ':');
1214 #ifndef PERLIO_LAYERS
1215 Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s);
1227 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1229 /* The old body of this is now in non-LAYER part of perlio.c
1230 * This is a stub for any XS code which might have been calling it.
1232 const char *name = ":raw";
1233 #ifdef PERLIO_USING_CRLF
1234 if (!(mode & O_BINARY))
1237 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1240 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE)
1242 my_chsize(int fd, Off_t length)
1245 /* code courtesy of William Kucharski */
1251 if (PerlLIO_fstat(fd, &filebuf) < 0)
1254 if (filebuf.st_size < length) {
1256 /* extend file length */
1258 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1261 /* write a "0" byte */
1263 if ((PerlLIO_write(fd, "", 1)) != 1)
1267 /* truncate length */
1271 fl.l_start = length;
1272 fl.l_type = F_WRLCK; /* write lock on file space */
1275 * This relies on the UNDOCUMENTED F_FREESP argument to
1276 * fcntl(2), which truncates the file so that it ends at the
1277 * position indicated by fl.l_start.
1279 * Will minor miracles never cease?
1282 if (fcntl(fd, F_FREESP, &fl) < 0)
1288 Perl_croak_nocontext("truncate not implemented");
1289 #endif /* F_FREESP */
1292 #endif /* !HAS_TRUNCATE && !HAS_CHSIZE */
1295 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1297 register const char *tmps;
1300 /* assuming fp is checked earlier */
1303 switch (SvTYPE(sv)) {
1305 if (ckWARN(WARN_UNINITIALIZED))
1313 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1315 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1316 return !PerlIO_error(fp);
1320 if (PerlIO_isutf8(fp)) {
1322 sv_utf8_upgrade_flags(sv = sv_mortalcopy(sv),
1323 SV_GMAGIC|SV_UTF8_NO_ENCODING);
1325 else if (DO_UTF8(sv)) {
1326 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
1327 && ckWARN_d(WARN_UTF8))
1329 Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
1332 tmps = SvPV_const(sv, len);
1335 /* To detect whether the process is about to overstep its
1336 * filesize limit we would need getrlimit(). We could then
1337 * also transparently raise the limit with setrlimit() --
1338 * but only until the system hard limit/the filesystem limit,
1339 * at which we would get EPERM. Note that when using buffered
1340 * io the write failure can be delayed until the flush/close. --jhi */
1341 if (len && (PerlIO_write(fp,tmps,len) == 0))
1343 return !PerlIO_error(fp);
1353 if (PL_op->op_flags & OPf_REF) {
1358 if (io && IoIFP(io)) {
1360 sv_setpvn(PL_statname,"", 0);
1361 PL_laststype = OP_STAT;
1362 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1366 return PL_laststatval;
1367 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1368 report_evil_fh(gv, io, PL_op->op_type);
1370 sv_setpvn(PL_statname,"", 0);
1371 return (PL_laststatval = -1);
1374 else if (PL_op->op_private & OPpFT_STACKED) {
1375 return PL_laststatval;
1382 if (SvTYPE(sv) == SVt_PVGV) {
1386 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1391 s = SvPV_const(sv, len);
1393 sv_setpvn(PL_statname, s, len);
1394 s = SvPVX_const(PL_statname); /* s now NUL-terminated */
1395 PL_laststype = OP_STAT;
1396 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1397 if (PL_laststatval < 0 && strchr(s, '\n') && ckWARN(WARN_NEWLINE))
1398 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
1399 return PL_laststatval;
1403 static const char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
1410 if (PL_op->op_flags & OPf_REF) {
1412 if (cGVOP_gv == PL_defgv) {
1413 if (PL_laststype != OP_LSTAT)
1414 Perl_croak(aTHX_ no_prev_lstat);
1415 return PL_laststatval;
1417 if (ckWARN(WARN_IO)) {
1418 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1420 return (PL_laststatval = -1);
1423 else if (PL_laststype != OP_LSTAT
1424 && (PL_op->op_private & OPpFT_STACKED) && ckWARN(WARN_IO))
1425 Perl_croak(aTHX_ no_prev_lstat);
1427 PL_laststype = OP_LSTAT;
1431 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
1432 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1433 GvENAME((GV*) SvRV(sv)));
1434 return (PL_laststatval = -1);
1436 /* XXX Do really need to be calling SvPV() all these times? */
1437 sv_setpv(PL_statname,SvPV_nolen_const(sv));
1438 PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(sv),&PL_statcache);
1439 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(sv), '\n'))
1440 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
1441 return PL_laststatval;
1446 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1448 return do_aexec5(really, mark, sp, 0, 0);
1453 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1454 int fd, int do_report)
1457 #if defined(MACOS_TRADITIONAL) || defined(SYMBIAN)
1458 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1462 const char *tmps = Nullch;
1463 Newx(PL_Argv, sp - mark + 1, char*);
1466 while (++mark <= sp) {
1468 *a++ = (char*)SvPV_nolen_const(*mark);
1474 tmps = SvPV_nolen_const(really);
1475 if ((!really && *PL_Argv[0] != '/') ||
1476 (really && *tmps != '/')) /* will execvp use PATH? */
1477 TAINT_ENV(); /* testing IFS here is overkill, probably */
1479 if (really && *tmps)
1480 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1482 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1484 if (ckWARN(WARN_EXEC))
1485 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1486 (really ? tmps : PL_Argv[0]), Strerror(errno));
1490 PerlLIO_write(fd, (void*)&e, sizeof(int));
1500 Perl_do_execfree(pTHX)
1503 PL_Argv = Null(char **);
1508 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(SYMBIAN) && !defined(MACOS_TRADITIONAL)
1511 Perl_do_exec(pTHX_ char *cmd)
1513 return do_exec3(cmd,0,0);
1517 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1523 while (*cmd && isSPACE(*cmd))
1526 /* save an extra exec if possible */
1530 char flags[PERL_FLAGS_MAX];
1531 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1532 strnEQ(cmd+PL_cshlen," -c",3)) {
1534 strlcpy(flags, "-c", PERL_FLAGS_MAX);
1538 s = cmd+PL_cshlen+3;
1542 strlcat(flags, "f", PERL_FLAGS_MAX);
1556 if (s[-1] == '\'') {
1559 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1569 /* see if there are shell metacharacters in it */
1571 if (*cmd == '.' && isSPACE(cmd[1]))
1574 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1577 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1581 for (s = cmd; *s; s++) {
1582 if (*s != ' ' && !isALPHA(*s) &&
1583 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1584 if (*s == '\n' && !s[1]) {
1588 /* handle the 2>&1 construct at the end */
1589 if (*s == '>' && s[1] == '&' && s[2] == '1'
1590 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1591 && (!s[3] || isSPACE(s[3])))
1593 const char *t = s + 3;
1595 while (*t && isSPACE(*t))
1597 if (!*t && (PerlLIO_dup2(1,2) != -1)) {
1604 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1610 Newx(PL_Argv, (s - cmd) / 2 + 2, char*);
1611 PL_Cmd = savepvn(cmd, s-cmd);
1613 for (s = PL_Cmd; *s;) {
1614 while (*s && isSPACE(*s)) s++;
1617 while (*s && !isSPACE(*s)) s++;
1624 PerlProc_execvp(PL_Argv[0],PL_Argv);
1626 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1631 if (ckWARN(WARN_EXEC))
1632 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1633 PL_Argv[0], Strerror(errno));
1636 PerlLIO_write(fd, (void*)&e, sizeof(int));
1645 #endif /* OS2 || WIN32 */
1648 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1651 register I32 tot = 0;
1654 SV ** const oldmark = mark;
1656 #define APPLY_TAINT_PROPER() \
1658 if (PL_tainted) { TAINT_PROPER(what); } \
1661 /* This is a first heuristic; it doesn't catch tainting magic. */
1663 while (++mark <= sp) {
1664 if (SvTAINTED(*mark)) {
1674 APPLY_TAINT_PROPER();
1677 APPLY_TAINT_PROPER();
1679 while (++mark <= sp) {
1680 const char *name = SvPV_nolen_const(*mark);
1681 APPLY_TAINT_PROPER();
1682 if (PerlLIO_chmod(name, val))
1690 APPLY_TAINT_PROPER();
1691 if (sp - mark > 2) {
1693 val = SvIVx(*++mark);
1694 val2 = SvIVx(*++mark);
1695 APPLY_TAINT_PROPER();
1697 while (++mark <= sp) {
1698 const char *name = SvPV_nolen_const(*mark);
1699 APPLY_TAINT_PROPER();
1700 if (PerlLIO_chown(name, val, val2))
1707 XXX Should we make lchown() directly available from perl?
1708 For now, we'll let Configure test for HAS_LCHOWN, but do
1709 nothing in the core.
1715 APPLY_TAINT_PROPER();
1718 s = SvPVx_nolen_const(*++mark);
1720 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1722 if ((val = whichsig(s)) < 0)
1723 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1727 APPLY_TAINT_PROPER();
1730 /* kill() doesn't do process groups (job trees?) under VMS */
1731 if (val < 0) val = -val;
1732 if (val == SIGKILL) {
1733 # include <starlet.h>
1734 /* Use native sys$delprc() to insure that target process is
1735 * deleted; supervisor-mode images don't pay attention to
1736 * CRTL's emulation of Unix-style signals and kill()
1738 while (++mark <= sp) {
1739 I32 proc = SvIVx(*mark);
1740 register unsigned long int __vmssts;
1741 APPLY_TAINT_PROPER();
1742 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1746 case SS$_NOSUCHNODE:
1747 SETERRNO(ESRCH,__vmssts);
1750 SETERRNO(EPERM,__vmssts);
1753 SETERRNO(EVMSERR,__vmssts);
1762 while (++mark <= sp) {
1763 I32 proc = SvIVx(*mark);
1764 APPLY_TAINT_PROPER();
1766 if (PerlProc_killpg(proc,val)) /* BSD */
1768 if (PerlProc_kill(-proc,val)) /* SYSV */
1774 while (++mark <= sp) {
1775 I32 proc = SvIVx(*mark);
1776 APPLY_TAINT_PROPER();
1777 if (PerlProc_kill(proc, val))
1785 APPLY_TAINT_PROPER();
1787 while (++mark <= sp) {
1788 s = SvPV_nolen_const(*mark);
1789 APPLY_TAINT_PROPER();
1790 if (PL_euid || PL_unsafe) {
1794 else { /* don't let root wipe out directories without -U */
1795 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1807 APPLY_TAINT_PROPER();
1808 if (sp - mark > 2) {
1809 #if defined(I_UTIME) || defined(VMS)
1810 struct utimbuf utbuf;
1811 struct utimbuf *utbufp = &utbuf;
1817 void *utbufp = &utbuf;
1820 SV* accessed = *++mark;
1821 SV* modified = *++mark;
1823 /* Be like C, and if both times are undefined, let the C
1824 * library figure out what to do. This usually means
1825 * "current time". */
1827 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1830 Zero(&utbuf, sizeof utbuf, char);
1832 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1833 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1835 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1836 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1839 APPLY_TAINT_PROPER();
1841 while (++mark <= sp) {
1842 char *name = SvPV_nolen(*mark);
1843 APPLY_TAINT_PROPER();
1844 if (PerlLIO_utime(name, utbufp))
1855 #undef APPLY_TAINT_PROPER
1858 /* Do the permissions allow some operation? Assumes statcache already set. */
1859 #ifndef VMS /* VMS' cando is in vms.c */
1861 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register const Stat_t *statbufp)
1862 /* Note: we use "effective" both for uids and gids.
1863 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1866 /* [Comments and code from Len Reed]
1867 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1868 * to write-protected files. The execute permission bit is set
1869 * by the Miscrosoft C library stat() function for the following:
1874 * All files and directories are readable.
1875 * Directories and special files, e.g. "CON", cannot be
1877 * [Comment by Tom Dinger -- a directory can have the write-protect
1878 * bit set in the file system, but DOS permits changes to
1879 * the directory anyway. In addition, all bets are off
1880 * here for networked software, such as Novell and
1884 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1885 * too so it will actually look into the files for magic numbers
1887 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1889 #else /* ! DOSISH */
1890 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1891 if (mode == S_IXUSR) {
1892 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1896 return TRUE; /* root reads and writes anything */
1899 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1900 if (statbufp->st_mode & mode)
1901 return TRUE; /* ok as "user" */
1903 else if (ingroup(statbufp->st_gid,effective)) {
1904 if (statbufp->st_mode & mode >> 3)
1905 return TRUE; /* ok as "group" */
1907 else if (statbufp->st_mode & mode >> 6)
1908 return TRUE; /* ok as "other" */
1910 #endif /* ! DOSISH */
1915 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1917 #ifdef MACOS_TRADITIONAL
1918 /* This is simply not correct for AppleShare, but fix it yerself. */
1921 if (testgid == (effective ? PL_egid : PL_gid))
1923 #ifdef HAS_GETGROUPS
1928 Groups_t gary[NGROUPS];
1931 anum = getgroups(NGROUPS,gary);
1933 if (gary[anum] == testgid)
1941 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1944 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1946 key_t key = (key_t)SvNVx(*++mark);
1947 const I32 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1948 const I32 flags = SvIVx(*++mark);
1956 return msgget(key, flags);
1960 return semget(key, n, flags);
1964 return shmget(key, n, flags);
1966 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1968 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1971 return -1; /* should never happen */
1975 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
1982 const I32 id = SvIVx(*++mark);
1983 const I32 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1984 const I32 cmd = SvIVx(*++mark);
1985 PERL_UNUSED_ARG(sp);
1989 getinfo = (cmd == IPC_STAT);
1995 if (cmd == IPC_STAT || cmd == IPC_SET)
1996 infosize = sizeof(struct msqid_ds);
2001 if (cmd == IPC_STAT || cmd == IPC_SET)
2002 infosize = sizeof(struct shmid_ds);
2008 if (cmd == IPC_STAT || cmd == IPC_SET)
2009 infosize = sizeof(struct semid_ds);
2010 else if (cmd == GETALL || cmd == SETALL)
2012 struct semid_ds semds;
2014 #ifdef EXTRA_F_IN_SEMUN_BUF
2015 semun.buff = &semds;
2019 getinfo = (cmd == GETALL);
2020 if (Semctl(id, 0, IPC_STAT, semun) == -1)
2022 infosize = semds.sem_nsems * sizeof(short);
2023 /* "short" is technically wrong but much more portable
2024 than guessing about u_?short(_t)? */
2027 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2031 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
2033 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2041 SvPV_force_nolen(astr);
2042 a = SvGROW(astr, infosize+1);
2047 a = SvPV(astr, len);
2048 if (len != infosize)
2049 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
2058 a = INT2PTR(char *,i); /* ouch */
2065 ret = msgctl(id, cmd, (struct msqid_ds *)a);
2071 union semun unsemds;
2073 #ifdef EXTRA_F_IN_SEMUN_BUF
2074 unsemds.buff = (struct semid_ds *)a;
2076 unsemds.buf = (struct semid_ds *)a;
2078 ret = Semctl(id, n, cmd, unsemds);
2080 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2087 ret = shmctl(id, cmd, (struct shmid_ds *)a);
2091 if (getinfo && ret >= 0) {
2092 SvCUR_set(astr, infosize);
2093 *SvEND(astr) = '\0';
2100 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
2107 const I32 id = SvIVx(*++mark);
2108 PERL_UNUSED_ARG(sp);
2111 flags = SvIVx(*++mark);
2112 mbuf = SvPV_const(mstr, len);
2113 if ((msize = len - sizeof(long)) < 0)
2114 Perl_croak(aTHX_ "Arg too short for msgsnd");
2116 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
2118 Perl_croak(aTHX_ "msgsnd not implemented");
2123 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
2129 I32 msize, flags, ret;
2130 const I32 id = SvIVx(*++mark);
2131 PERL_UNUSED_ARG(sp);
2134 /* suppress warning when reading into undef var --jhi */
2136 sv_setpvn(mstr, "", 0);
2137 msize = SvIVx(*++mark);
2138 mtype = (long)SvIVx(*++mark);
2139 flags = SvIVx(*++mark);
2140 SvPV_force_nolen(mstr);
2141 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
2144 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
2146 SvCUR_set(mstr, sizeof(long)+ret);
2147 *SvEND(mstr) = '\0';
2148 #ifndef INCOMPLETE_TAINTS
2149 /* who knows who has been playing with this message? */
2155 Perl_croak(aTHX_ "msgrcv not implemented");
2160 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2166 const I32 id = SvIVx(*++mark);
2167 PERL_UNUSED_ARG(sp);
2170 opbuf = SvPV_const(opstr, opsize);
2171 if (opsize < 3 * SHORTSIZE
2172 || (opsize % (3 * SHORTSIZE))) {
2173 SETERRNO(EINVAL,LIB_INVARG);
2177 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2179 const int nsops = opsize / (3 * sizeof (short));
2181 short *ops = (short *) opbuf;
2183 struct sembuf *temps, *t;
2186 Newx (temps, nsops, struct sembuf);
2194 result = semop(id, temps, nsops);
2208 Perl_croak(aTHX_ "semop not implemented");
2213 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2219 struct shmid_ds shmds;
2220 const I32 id = SvIVx(*++mark);
2221 PERL_UNUSED_ARG(sp);
2224 mpos = SvIVx(*++mark);
2225 msize = SvIVx(*++mark);
2227 if (shmctl(id, IPC_STAT, &shmds) == -1)
2229 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2230 SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */
2233 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2234 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2236 if (optype == OP_SHMREAD) {
2238 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2240 sv_setpvn(mstr, "", 0);
2241 SvPV_force_nolen(mstr);
2242 mbuf = SvGROW(mstr, msize+1);
2244 Copy(shm + mpos, mbuf, msize, char);
2245 SvCUR_set(mstr, msize);
2246 *SvEND(mstr) = '\0';
2248 #ifndef INCOMPLETE_TAINTS
2249 /* who knows who has been playing with this shared memory? */
2257 const char *mbuf = SvPV_const(mstr, len);
2258 if ((n = len) > msize)
2260 Copy(mbuf, shm + mpos, n, char);
2262 memzero(shm + mpos + n, msize - n);
2266 Perl_croak(aTHX_ "shm I/O not implemented");
2270 #endif /* SYSV IPC */
2275 =for apidoc start_glob
2277 Function called by C<do_readline> to spawn a glob (or do the glob inside
2278 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2279 this glob starter is only used by miniperl during the build process.
2280 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2286 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2289 SV *tmpcmd = NEWSV(55, 0);
2293 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2294 /* since spawning off a process is a real performance hit */
2296 #include <descrip.h>
2297 #include <lib$routines.h>
2300 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2301 char vmsspec[NAM$C_MAXRSS+1];
2302 char * const rstr = rslt + sizeof(unsigned short int);
2303 char *begin, *end, *cp;
2304 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2307 struct dsc$descriptor_s wilddsc
2308 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2309 struct dsc$descriptor_vs rsdsc
2310 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2311 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2313 /* We could find out if there's an explicit dev/dir or version
2314 by peeking into lib$find_file's internal context at
2315 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2316 but that's unsupported, so I don't want to do it now and
2317 have it bite someone in the future. */
2318 cp = SvPV(tmpglob,i);
2320 if (cp[i] == ';') hasver = 1;
2322 if (sts) hasver = 1;
2326 hasdir = isunix = 1;
2329 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2334 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2336 if (!PerlLIO_stat(SvPVX_const(tmpglob),&st) && S_ISDIR(st.st_mode))
2337 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2338 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2339 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2340 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2341 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
2342 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2343 &dfltdsc,NULL,NULL,NULL))&1)) {
2344 /* with varying string, 1st word of buffer contains result length */
2345 end = rstr + *((unsigned short int*)rslt);
2346 if (!hasver) while (*end != ';' && end > rstr) end--;
2347 *(end++) = '\n'; *end = '\0';
2348 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2350 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2355 while (*(--begin) != ']' && *begin != '>') ;
2358 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2360 if (cxt) (void)lib$find_file_end(&cxt);
2361 if (ok && sts != RMS$_NMF &&
2362 sts != RMS$_DNF && sts != RMS_FNF) ok = 0;
2365 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2367 PerlIO_close(tmpfp);
2371 PerlIO_rewind(tmpfp);
2372 IoTYPE(io) = IoTYPE_RDONLY;
2373 IoIFP(io) = fp = tmpfp;
2374 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2379 #ifdef MACOS_TRADITIONAL
2380 sv_setpv(tmpcmd, "glob ");
2381 sv_catsv(tmpcmd, tmpglob);
2382 sv_catpv(tmpcmd, " |");
2386 sv_setpv(tmpcmd, "for a in ");
2387 sv_catsv(tmpcmd, tmpglob);
2388 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2391 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2392 sv_catsv(tmpcmd, tmpglob);
2394 sv_setpv(tmpcmd, "perlglob ");
2395 sv_catsv(tmpcmd, tmpglob);
2396 sv_catpv(tmpcmd, " |");
2401 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2402 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2403 sv_catsv(tmpcmd, tmpglob);
2404 sv_catpv(tmpcmd, "' 2>/dev/null |");
2406 sv_setpv(tmpcmd, "echo ");
2407 sv_catsv(tmpcmd, tmpglob);
2409 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2411 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2414 #endif /* !DOSISH */
2415 #endif /* MACOS_TRADITIONAL */
2416 (void)do_open(PL_last_in_gv, (char*)SvPVX_const(tmpcmd), SvCUR(tmpcmd),
2417 FALSE, O_RDONLY, 0, Nullfp);
2426 * c-indentation-style: bsd
2428 * indent-tabs-mode: t
2431 * ex: set ts=8 sts=4 sw=4 noet: