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,
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 *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 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 */
217 for (; isSPACE(*type); type++) ;
218 while (tend > type && isSPACE(tend[-1]))
222 /* New style explicit name, type is just mode and layer info */
224 if (SvROK(*svp) && !strchr(name,'&')) {
226 Perl_warner(aTHX_ packWARN(WARN_IO),
227 "Can't open a reference");
228 SETERRNO(EINVAL, LIB_INVARG);
231 #endif /* USE_STDIO */
232 name = SvOK(*svp) ? savesvpv (*svp) : savepvn ("", 0);
240 if ((*type == IoTYPE_RDWR) && /* scary */
241 (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
242 ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
243 TAINT_PROPER("open");
248 if (*type == IoTYPE_PIPE) {
250 if (type[1] != IoTYPE_STD) {
252 Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
257 for (type++; isSPACE(*type); type++) ;
263 /* command is missing 19990114 */
264 if (ckWARN(WARN_PIPE))
265 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
269 if ((*name == '-' && name[1] == '\0') || num_svs)
271 TAINT_PROPER("piped open");
272 if (!num_svs && name[len-1] == '|') {
274 if (ckWARN(WARN_PIPE))
275 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
281 strlcat(mode, "b", PERL_MODE_MAX);
283 strlcat(mode, "t", PERL_MODE_MAX);
291 fp = PerlProc_popen_list(mode, num_svs, svp);
294 fp = PerlProc_popen(name,mode);
298 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
304 else if (*type == IoTYPE_WRONLY) {
305 TAINT_PROPER("open");
307 if (*type == IoTYPE_WRONLY) {
308 /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
309 mode[0] = IoTYPE(io) = IoTYPE_APPEND;
319 strlcat(mode, "b", PERL_MODE_MAX);
321 strlcat(mode, "t", PERL_MODE_MAX);
330 dodup = PERLIO_DUP_FD;
336 if (!num_svs && !*type && supplied_fp) {
337 /* "<+&" etc. is used by typemaps */
342 Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
345 for (; isSPACE(*type); type++) ;
346 if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) {
350 else if (isDIGIT(*type)) {
356 thatio = sv_2io(*svp);
360 thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
361 thatio = GvIO(thatgv);
365 SETERRNO(EINVAL,SS_IVCHAN);
369 if ((that_fp = IoIFP(thatio))) {
370 /* Flush stdio buffer before dup. --mjd
371 * Unfortunately SEEK_CURing 0 seems to
372 * be optimized away on most platforms;
373 * only Solaris and Linux seem to flush
376 /* sfio fails to clear error on next
377 sfwrite, contrary to documentation.
379 if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
380 PerlIO_clearerr(that_fp);
382 /* On the other hand, do all platforms
383 * take gracefully to flushing a read-only
384 * filehandle? Perhaps we should do
385 * fsetpos(src)+fgetpos(dst)? --nik */
386 PerlIO_flush(that_fp);
387 fd = PerlIO_fileno(that_fp);
388 /* When dup()ing STDIN, STDOUT or STDERR
389 * explicitly set appropriate access mode */
390 if (that_fp == PerlIO_stdout()
391 || that_fp == PerlIO_stderr())
392 IoTYPE(io) = IoTYPE_WRONLY;
393 else if (that_fp == PerlIO_stdin())
394 IoTYPE(io) = IoTYPE_RDONLY;
395 /* When dup()ing a socket, say result is
397 else if (IoTYPE(thatio) == IoTYPE_SOCKET)
398 IoTYPE(io) = IoTYPE_SOCKET;
406 fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
410 fd = PerlLIO_dup(fd);
413 if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
422 for (; isSPACE(*type); type++) ;
423 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
426 fp = PerlIO_stdout();
427 IoTYPE(io) = IoTYPE_STD;
429 Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
434 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
439 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
442 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
443 goto unknown_open_mode;
444 } /* IoTYPE_WRONLY */
445 else if (*type == IoTYPE_RDONLY) {
447 for (type++; isSPACE(*type); type++) ;
451 strlcat(mode, "b", PERL_MODE_MAX);
453 strlcat(mode, "t", PERL_MODE_MAX);
463 if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
467 IoTYPE(io) = IoTYPE_STD;
469 Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
474 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
479 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
481 if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
482 goto unknown_open_mode;
483 } /* IoTYPE_RDONLY */
484 else if ((num_svs && /* '-|...' or '...|' */
485 type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
486 (!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
488 type += 2; /* skip over '-|' */
492 while (tend > type && isSPACE(tend[-1]))
495 for (; isSPACE(*type); type++) ;
500 /* command is missing 19990114 */
501 if (ckWARN(WARN_PIPE))
502 Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
506 if (!(*name == '-' && name[1] == '\0') || num_svs)
508 TAINT_PROPER("piped open");
513 strlcat(mode, "b", PERL_MODE_MAX);
515 strlcat(mode, "t", PERL_MODE_MAX);
524 fp = PerlProc_popen_list(mode,num_svs,svp);
527 fp = PerlProc_popen(name,mode);
529 IoTYPE(io) = IoTYPE_PIPE;
531 for (; isSPACE(*type); type++) ;
533 if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
539 else { /* layer(Args) */
541 goto unknown_open_mode;
543 IoTYPE(io) = IoTYPE_RDONLY;
545 for (; isSPACE(*name); name++) ;
550 strlcat(mode, "b", PERL_MODE_MAX);
552 strlcat(mode, "t", PERL_MODE_MAX);
560 if (*name == '-' && name[1] == '\0') {
562 IoTYPE(io) = IoTYPE_STD;
566 namesv = sv_2mortal(newSVpvn(type,strlen(type)));
571 fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
576 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
577 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
581 if (ckWARN(WARN_IO)) {
582 if ((IoTYPE(io) == IoTYPE_RDONLY) &&
583 (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
584 Perl_warner(aTHX_ packWARN(WARN_IO),
585 "Filehandle STD%s reopened as %s only for input",
586 ((fp == PerlIO_stdout()) ? "OUT" : "ERR"),
589 else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
590 Perl_warner(aTHX_ packWARN(WARN_IO),
591 "Filehandle STDIN reopened as %s only for output",
596 fd = PerlIO_fileno(fp);
597 /* If there is no fd (e.g. PerlIO::scalar) assume it isn't a
598 * socket - this covers PerlIO::scalar - otherwise unless we "know" the
599 * type probe for socket-ness.
601 if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
602 if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
603 /* If PerlIO claims to have fd we had better be able to fstat() it. */
604 (void) PerlIO_close(fp);
608 if (S_ISSOCK(PL_statbuf.st_mode))
609 IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
613 !(PL_statbuf.st_mode & S_IFMT)
617 && IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
618 && IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
619 ) { /* on OS's that return 0 on fstat()ed pipe */
621 Sock_size_t buflen = sizeof tmpbuf;
622 if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
623 || errno != ENOTSOCK)
624 IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
625 /* but some return 0 for streams too, sigh */
627 #endif /* HAS_SOCKET */
628 #endif /* !PERL_MICRO */
632 * If this is a standard handle we discard all the layer stuff
633 * and just dup the fd into whatever was on the handle before !
636 if (saveifp) { /* must use old fp? */
637 /* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
638 then dup the new fileno down
641 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
642 if (saveofp != saveifp) { /* was a socket? */
643 PerlIO_close(saveofp);
647 /* Still a small can-of-worms here if (say) PerlIO::scalar
648 is assigned to (say) STDOUT - for now let dup2() fail
649 and provide the error
651 if (PerlLIO_dup2(fd, savefd) < 0) {
652 (void)PerlIO_close(fp);
656 if (savefd != PerlIO_fileno(PerlIO_stdin())) {
657 char newname[FILENAME_MAX+1];
658 if (PerlIO_getname(fp, newname)) {
659 if (fd == PerlIO_fileno(PerlIO_stdout()))
660 Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
661 if (fd == PerlIO_fileno(PerlIO_stderr()))
662 Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
668 /* PL_fdpid isn't used on Windows, so avoid this useless work.
669 * XXX Probably the same for a lot of other places. */
675 sv = *av_fetch(PL_fdpid,fd,TRUE);
676 (void)SvUPGRADE(sv, SVt_IV);
679 sv = *av_fetch(PL_fdpid,savefd,TRUE);
680 (void)SvUPGRADE(sv, SVt_IV);
687 /* need to close fp without closing underlying fd */
688 int ofd = PerlIO_fileno(fp);
689 int dupfd = PerlLIO_dup(ofd);
690 #if defined(HAS_FCNTL) && defined(F_SETFD)
691 /* Assume if we have F_SETFD we have F_GETFD */
692 int coe = fcntl(ofd,F_GETFD);
695 PerlLIO_dup2(dupfd,ofd);
696 #if defined(HAS_FCNTL) && defined(F_SETFD)
697 /* The dup trick has lost close-on-exec on ofd */
698 fcntl(ofd,F_SETFD, coe);
700 PerlLIO_close(dupfd);
707 fd = PerlIO_fileno(fp);
709 #if defined(HAS_FCNTL) && defined(F_SETFD)
711 int save_errno = errno;
712 fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
718 IoFLAGS(io) &= ~IOf_NOLINE;
720 if (IoTYPE(io) == IoTYPE_SOCKET
721 || (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
723 if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC)
726 if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,svp))) {
740 IoTYPE(io) = savetype;
745 Perl_nextargv(pTHX_ register GV *gv)
748 #ifndef FLEXFILENAMES
757 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
758 if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
759 IoFLAGS(io) &= ~IOf_START;
761 if (!PL_argvout_stack)
762 PL_argvout_stack = newAV();
763 av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
766 if (PL_filemode & (S_ISUID|S_ISGID)) {
767 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
770 (void)fchmod(PL_lastfd,PL_filemode);
772 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
779 while (av_len(GvAV(gv)) >= 0) {
781 sv = av_shift(GvAV(gv));
783 sv_setsv(GvSV(gv),sv);
784 SvSETMAGIC(GvSV(gv));
785 PL_oldname = SvPVx(GvSV(gv), oldlen);
786 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
788 TAINT_PROPER("inplace open");
789 if (oldlen == 1 && *PL_oldname == '-') {
790 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
791 return IoIFP(GvIOp(gv));
793 #ifndef FLEXFILENAMES
794 filedev = PL_statbuf.st_dev;
795 fileino = PL_statbuf.st_ino;
797 PL_filemode = PL_statbuf.st_mode;
798 fileuid = PL_statbuf.st_uid;
799 filegid = PL_statbuf.st_gid;
800 if (!S_ISREG(PL_filemode)) {
801 if (ckWARN_d(WARN_INPLACE))
802 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
803 "Can't do inplace edit: %s is not a regular file",
809 char *star = strchr(PL_inplace, '*');
811 char *begin = PL_inplace;
812 sv_setpvn(sv, "", 0);
814 sv_catpvn(sv, begin, star - begin);
815 sv_catpvn(sv, PL_oldname, oldlen);
817 } while ((star = strchr(begin, '*')));
822 sv_catpv(sv,PL_inplace);
824 #ifndef FLEXFILENAMES
825 if ((PerlLIO_stat(SvPVX_const(sv),&PL_statbuf) >= 0
826 && PL_statbuf.st_dev == filedev
827 && PL_statbuf.st_ino == fileino)
829 || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
833 if (ckWARN_d(WARN_INPLACE))
834 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
835 "Can't do inplace edit: %"SVf" would not be unique",
842 #if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
843 if (PerlLIO_rename(PL_oldname,SvPVX_const(sv)) < 0) {
844 if (ckWARN_d(WARN_INPLACE))
845 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
846 "Can't rename %s to %"SVf": %s, skipping file",
847 PL_oldname, sv, Strerror(errno) );
853 (void)PerlLIO_unlink(SvPVX_const(sv));
854 (void)PerlLIO_rename(PL_oldname,SvPVX_const(sv));
855 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
858 (void)UNLINK(SvPVX_const(sv));
859 if (link(PL_oldname,SvPVX_const(sv)) < 0) {
860 if (ckWARN_d(WARN_INPLACE))
861 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
862 "Can't rename %s to %"SVf": %s, skipping file",
863 PL_oldname, sv, Strerror(errno) );
867 (void)UNLINK(PL_oldname);
871 #if !defined(DOSISH) && !defined(AMIGAOS)
872 # ifndef VMS /* Don't delete; use automatic file versioning */
873 if (UNLINK(PL_oldname) < 0) {
874 if (ckWARN_d(WARN_INPLACE))
875 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
876 "Can't remove %s: %s, skipping file",
877 PL_oldname, Strerror(errno) );
883 Perl_croak(aTHX_ "Can't do inplace edit without backup");
887 sv_setpvn(sv,">",!PL_inplace);
888 sv_catpvn(sv,PL_oldname,oldlen);
889 SETERRNO(0,0); /* in case sprintf set errno */
891 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
892 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
894 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
895 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
898 if (ckWARN_d(WARN_INPLACE))
899 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
900 PL_oldname, Strerror(errno) );
904 setdefout(PL_argvoutgv);
905 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
906 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
908 (void)fchmod(PL_lastfd,PL_filemode);
910 # if !(defined(WIN32) && defined(__BORLANDC__))
911 /* Borland runtime creates a readonly file! */
912 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
915 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
917 (void)fchown(PL_lastfd,fileuid,filegid);
920 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
925 return IoIFP(GvIOp(gv));
928 if (ckWARN_d(WARN_INPLACE)) {
929 const int eno = errno;
930 if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
931 && !S_ISREG(PL_statbuf.st_mode))
933 Perl_warner(aTHX_ packWARN(WARN_INPLACE),
934 "Can't do inplace edit: %s is not a regular file",
938 Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
939 PL_oldname, Strerror(eno));
943 if (io && (IoFLAGS(io) & IOf_ARGV))
944 IoFLAGS(io) |= IOf_START;
946 (void)do_close(PL_argvoutgv,FALSE);
947 if (io && (IoFLAGS(io) & IOf_ARGV)
948 && PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
950 GV *oldout = (GV*)av_pop(PL_argvout_stack);
952 SvREFCNT_dec(oldout);
955 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
962 Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
981 if (PerlProc_pipe(fd) < 0)
983 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
984 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
985 IoOFP(rstio) = IoIFP(rstio);
986 IoIFP(wstio) = IoOFP(wstio);
987 IoTYPE(rstio) = IoTYPE_RDONLY;
988 IoTYPE(wstio) = IoTYPE_WRONLY;
989 if (!IoIFP(rstio) || !IoOFP(wstio)) {
990 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
991 else PerlLIO_close(fd[0]);
992 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
993 else PerlLIO_close(fd[1]);
997 sv_setsv(sv,&PL_sv_yes);
1001 sv_setsv(sv,&PL_sv_undef);
1006 /* explicit renamed to avoid C++ conflict -- kja */
1008 Perl_do_close(pTHX_ GV *gv, bool not_implicit)
1015 if (!gv || SvTYPE(gv) != SVt_PVGV) {
1017 SETERRNO(EBADF,SS_IVCHAN);
1021 if (!io) { /* never opened */
1023 if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
1024 report_evil_fh(gv, io, PL_op->op_type);
1025 SETERRNO(EBADF,SS_IVCHAN);
1029 retval = io_close(io, not_implicit);
1033 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1035 IoTYPE(io) = IoTYPE_CLOSED;
1040 Perl_io_close(pTHX_ IO *io, bool not_implicit)
1042 bool retval = FALSE;
1045 if (IoTYPE(io) == IoTYPE_PIPE) {
1046 const int status = PerlProc_pclose(IoIFP(io));
1048 STATUS_NATIVE_SET(status);
1049 retval = (STATUS_UNIX == 0);
1052 retval = (status != -1);
1055 else if (IoTYPE(io) == IoTYPE_STD)
1058 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
1059 bool prev_err = PerlIO_error(IoOFP(io));
1060 retval = (PerlIO_close(IoOFP(io)) != EOF && !prev_err);
1061 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
1064 bool prev_err = PerlIO_error(IoIFP(io));
1065 retval = (PerlIO_close(IoIFP(io)) != EOF && !prev_err);
1068 IoOFP(io) = IoIFP(io) = Nullfp;
1070 else if (not_implicit) {
1071 SETERRNO(EBADF,SS_IVCHAN);
1078 Perl_do_eof(pTHX_ GV *gv)
1087 else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
1088 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1093 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
1094 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
1095 return FALSE; /* this is the most usual case */
1098 saverrno = errno; /* getc and ungetc can stomp on errno */
1099 ch = PerlIO_getc(IoIFP(io));
1101 (void)PerlIO_ungetc(IoIFP(io),ch);
1107 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
1108 if (PerlIO_get_cnt(IoIFP(io)) < -1)
1109 PerlIO_set_cnt(IoIFP(io),-1);
1111 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
1112 if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
1116 return TRUE; /* normal fp, definitely end of file */
1122 Perl_do_tell(pTHX_ GV *gv)
1124 register IO *io = 0;
1125 register PerlIO *fp;
1127 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1128 #ifdef ULTRIX_STDIO_BOTCH
1130 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1132 return PerlIO_tell(fp);
1134 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1135 report_evil_fh(gv, io, PL_op->op_type);
1136 SETERRNO(EBADF,RMS_IFI);
1141 Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
1143 register IO *io = 0;
1144 register PerlIO *fp;
1146 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
1147 #ifdef ULTRIX_STDIO_BOTCH
1149 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
1151 return PerlIO_seek(fp, pos, whence) >= 0;
1153 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1154 report_evil_fh(gv, io, PL_op->op_type);
1155 SETERRNO(EBADF,RMS_IFI);
1160 Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
1162 register IO *io = 0;
1163 register PerlIO *fp;
1165 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
1166 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
1167 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1168 report_evil_fh(gv, io, PL_op->op_type);
1169 SETERRNO(EBADF,RMS_IFI);
1174 Perl_mode_from_discipline(pTHX_ SV *discp)
1176 int mode = O_BINARY;
1179 const char *s = SvPV(discp,len);
1184 if (s[2] == 'a' && s[3] == 'w'
1185 && (!s[4] || s[4] == ':' || isSPACE(s[4])))
1194 if (s[2] == 'r' && s[3] == 'l' && s[4] == 'f'
1195 && (!s[5] || s[5] == ':' || isSPACE(s[5])))
1204 goto fail_discipline;
1207 else if (isSPACE(*s)) {
1214 end = strchr(s+1, ':');
1217 #ifndef PERLIO_LAYERS
1218 Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s);
1230 Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
1232 /* The old body of this is now in non-LAYER part of perlio.c
1233 * This is a stub for any XS code which might have been calling it.
1235 const char *name = ":raw";
1236 #ifdef PERLIO_USING_CRLF
1237 if (!(mode & O_BINARY))
1240 return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
1243 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE)
1245 my_chsize(int fd, Off_t length)
1248 /* code courtesy of William Kucharski */
1254 if (PerlLIO_fstat(fd, &filebuf) < 0)
1257 if (filebuf.st_size < length) {
1259 /* extend file length */
1261 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
1264 /* write a "0" byte */
1266 if ((PerlLIO_write(fd, "", 1)) != 1)
1270 /* truncate length */
1274 fl.l_start = length;
1275 fl.l_type = F_WRLCK; /* write lock on file space */
1278 * This relies on the UNDOCUMENTED F_FREESP argument to
1279 * fcntl(2), which truncates the file so that it ends at the
1280 * position indicated by fl.l_start.
1282 * Will minor miracles never cease?
1285 if (fcntl(fd, F_FREESP, &fl) < 0)
1291 Perl_croak_nocontext("truncate not implemented");
1292 #endif /* F_FREESP */
1295 #endif /* !HAS_TRUNCATE && !HAS_CHSIZE */
1298 Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
1300 register const char *tmps;
1303 /* assuming fp is checked earlier */
1309 if (SvIOK(sv) && SvIVX(sv) != 0) {
1310 PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
1311 return !PerlIO_error(fp);
1313 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
1314 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
1315 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
1316 return !PerlIO_error(fp);
1319 switch (SvTYPE(sv)) {
1321 if (ckWARN(WARN_UNINITIALIZED))
1329 PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
1331 PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
1332 return !PerlIO_error(fp);
1336 if (PerlIO_isutf8(fp)) {
1338 sv_utf8_upgrade_flags(sv = sv_mortalcopy(sv),
1339 SV_GMAGIC|SV_UTF8_NO_ENCODING);
1341 else if (DO_UTF8(sv)) {
1342 if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
1343 && ckWARN_d(WARN_UTF8))
1345 Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
1348 tmps = SvPV(sv, len);
1351 /* To detect whether the process is about to overstep its
1352 * filesize limit we would need getrlimit(). We could then
1353 * also transparently raise the limit with setrlimit() --
1354 * but only until the system hard limit/the filesystem limit,
1355 * at which we would get EPERM. Note that when using buffered
1356 * io the write failure can be delayed until the flush/close. --jhi */
1357 if (len && (PerlIO_write(fp,tmps,len) == 0))
1359 return !PerlIO_error(fp);
1369 if (PL_op->op_flags & OPf_REF) {
1374 if (io && IoIFP(io)) {
1376 sv_setpvn(PL_statname,"", 0);
1377 PL_laststype = OP_STAT;
1378 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
1382 return PL_laststatval;
1383 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1384 report_evil_fh(gv, io, PL_op->op_type);
1386 sv_setpvn(PL_statname,"", 0);
1387 return (PL_laststatval = -1);
1390 else if (PL_op->op_private & OPpFT_STACKED) {
1391 return PL_laststatval;
1398 if (SvTYPE(sv) == SVt_PVGV) {
1402 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
1409 sv_setpvn(PL_statname, s, len);
1410 s = SvPVX_const(PL_statname); /* s now NUL-terminated */
1411 PL_laststype = OP_STAT;
1412 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
1413 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
1414 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
1415 return PL_laststatval;
1419 static const char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
1427 if (PL_op->op_flags & OPf_REF) {
1429 if (cGVOP_gv == PL_defgv) {
1430 if (PL_laststype != OP_LSTAT)
1431 Perl_croak(aTHX_ no_prev_lstat);
1432 return PL_laststatval;
1434 if (ckWARN(WARN_IO)) {
1435 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1437 return (PL_laststatval = -1);
1440 else if (ckWARN(WARN_IO) && PL_laststype != OP_LSTAT
1441 && (PL_op->op_private & OPpFT_STACKED))
1442 Perl_croak(aTHX_ no_prev_lstat);
1444 PL_laststype = OP_LSTAT;
1448 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
1449 Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
1450 GvENAME((GV*) SvRV(sv)));
1451 return (PL_laststatval = -1);
1453 /* XXX Do really need to be calling SvPV() all these times? */
1454 sv_setpv(PL_statname,SvPV(sv, n_a));
1455 PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
1456 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
1457 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
1458 return PL_laststatval;
1463 Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
1465 return do_aexec5(really, mark, sp, 0, 0);
1470 Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
1471 int fd, int do_report)
1474 #if defined(MACOS_TRADITIONAL) || defined(SYMBIAN)
1475 Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
1478 const char *tmps = Nullch;
1482 New(401,PL_Argv, sp - mark + 1, char*);
1484 while (++mark <= sp) {
1486 *a++ = SvPVx(*mark, n_a);
1492 tmps = SvPV(really, n_a);
1493 if ((!really && *PL_Argv[0] != '/') ||
1494 (really && *tmps != '/')) /* will execvp use PATH? */
1495 TAINT_ENV(); /* testing IFS here is overkill, probably */
1497 if (really && *tmps)
1498 PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
1500 PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
1502 if (ckWARN(WARN_EXEC))
1503 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1504 (really ? tmps : PL_Argv[0]), Strerror(errno));
1508 PerlLIO_write(fd, (void*)&e, sizeof(int));
1518 Perl_do_execfree(pTHX)
1522 PL_Argv = Null(char **);
1530 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(SYMBIAN) && !defined(MACOS_TRADITIONAL)
1533 Perl_do_exec(pTHX_ char *cmd)
1535 return do_exec3(cmd,0,0);
1539 Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
1545 while (*cmd && isSPACE(*cmd))
1548 /* save an extra exec if possible */
1552 char flags[PERL_FLAGS_MAX];
1553 if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
1554 strnEQ(cmd+PL_cshlen," -c",3)) {
1556 strlcpy(flags, "-c", PERL_FLAGS_MAX);
1560 s = cmd+PL_cshlen+3;
1564 strlcat(flags, "f", PERL_FLAGS_MAX);
1578 if (s[-1] == '\'') {
1581 PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
1591 /* see if there are shell metacharacters in it */
1593 if (*cmd == '.' && isSPACE(cmd[1]))
1596 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1599 for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
1603 for (s = cmd; *s; s++) {
1604 if (*s != ' ' && !isALPHA(*s) &&
1605 strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1606 if (*s == '\n' && !s[1]) {
1610 /* handle the 2>&1 construct at the end */
1611 if (*s == '>' && s[1] == '&' && s[2] == '1'
1612 && s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
1613 && (!s[3] || isSPACE(s[3])))
1615 const char *t = s + 3;
1617 while (*t && isSPACE(*t))
1619 if (!*t && (PerlLIO_dup2(1,2) != -1)) {
1626 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1632 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1633 PL_Cmd = savepvn(cmd, s-cmd);
1635 for (s = PL_Cmd; *s;) {
1636 while (*s && isSPACE(*s)) s++;
1639 while (*s && !isSPACE(*s)) s++;
1646 PerlProc_execvp(PL_Argv[0],PL_Argv);
1648 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1653 if (ckWARN(WARN_EXEC))
1654 Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
1655 PL_Argv[0], Strerror(errno));
1658 PerlLIO_write(fd, (void*)&e, sizeof(int));
1667 #endif /* OS2 || WIN32 */
1670 Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
1673 register I32 tot = 0;
1676 SV **oldmark = mark;
1679 #define APPLY_TAINT_PROPER() \
1681 if (PL_tainted) { TAINT_PROPER(what); } \
1684 /* This is a first heuristic; it doesn't catch tainting magic. */
1686 while (++mark <= sp) {
1687 if (SvTAINTED(*mark)) {
1697 APPLY_TAINT_PROPER();
1700 APPLY_TAINT_PROPER();
1702 while (++mark <= sp) {
1703 const char *name = SvPVx(*mark, n_a);
1704 APPLY_TAINT_PROPER();
1705 if (PerlLIO_chmod(name, val))
1713 APPLY_TAINT_PROPER();
1714 if (sp - mark > 2) {
1716 val = SvIVx(*++mark);
1717 val2 = SvIVx(*++mark);
1718 APPLY_TAINT_PROPER();
1720 while (++mark <= sp) {
1721 const char *name = SvPVx(*mark, n_a);
1722 APPLY_TAINT_PROPER();
1723 if (PerlLIO_chown(name, val, val2))
1730 XXX Should we make lchown() directly available from perl?
1731 For now, we'll let Configure test for HAS_LCHOWN, but do
1732 nothing in the core.
1738 APPLY_TAINT_PROPER();
1741 s = SvPVx(*++mark, n_a);
1743 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1745 if ((val = whichsig(s)) < 0)
1746 Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
1750 APPLY_TAINT_PROPER();
1753 /* kill() doesn't do process groups (job trees?) under VMS */
1754 if (val < 0) val = -val;
1755 if (val == SIGKILL) {
1756 # include <starlet.h>
1757 /* Use native sys$delprc() to insure that target process is
1758 * deleted; supervisor-mode images don't pay attention to
1759 * CRTL's emulation of Unix-style signals and kill()
1761 while (++mark <= sp) {
1762 I32 proc = SvIVx(*mark);
1763 register unsigned long int __vmssts;
1764 APPLY_TAINT_PROPER();
1765 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1769 case SS$_NOSUCHNODE:
1770 SETERRNO(ESRCH,__vmssts);
1773 SETERRNO(EPERM,__vmssts);
1776 SETERRNO(EVMSERR,__vmssts);
1785 while (++mark <= sp) {
1786 I32 proc = SvIVx(*mark);
1787 APPLY_TAINT_PROPER();
1789 if (PerlProc_killpg(proc,val)) /* BSD */
1791 if (PerlProc_kill(-proc,val)) /* SYSV */
1797 while (++mark <= sp) {
1798 I32 proc = SvIVx(*mark);
1799 APPLY_TAINT_PROPER();
1800 if (PerlProc_kill(proc, val))
1808 APPLY_TAINT_PROPER();
1810 while (++mark <= sp) {
1811 s = SvPVx(*mark, n_a);
1812 APPLY_TAINT_PROPER();
1813 if (PL_euid || PL_unsafe) {
1817 else { /* don't let root wipe out directories without -U */
1818 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1830 APPLY_TAINT_PROPER();
1831 if (sp - mark > 2) {
1832 #if defined(I_UTIME) || defined(VMS)
1833 struct utimbuf utbuf;
1834 struct utimbuf *utbufp = &utbuf;
1840 void *utbufp = &utbuf;
1843 SV* accessed = *++mark;
1844 SV* modified = *++mark;
1846 /* Be like C, and if both times are undefined, let the C
1847 * library figure out what to do. This usually means
1848 * "current time". */
1850 if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
1853 Zero(&utbuf, sizeof utbuf, char);
1855 utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
1856 utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
1858 utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
1859 utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
1862 APPLY_TAINT_PROPER();
1864 while (++mark <= sp) {
1866 const char *name = SvPVx(*mark, n_a);
1867 APPLY_TAINT_PROPER();
1868 if (PerlLIO_utime(name, utbufp))
1879 #undef APPLY_TAINT_PROPER
1882 /* Do the permissions allow some operation? Assumes statcache already set. */
1883 #ifndef VMS /* VMS' cando is in vms.c */
1885 Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register const Stat_t *statbufp)
1886 /* Note: we use `effective' both for uids and gids.
1887 * Here we are betting on Uid_t being equal or wider than Gid_t. */
1890 /* [Comments and code from Len Reed]
1891 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1892 * to write-protected files. The execute permission bit is set
1893 * by the Miscrosoft C library stat() function for the following:
1898 * All files and directories are readable.
1899 * Directories and special files, e.g. "CON", cannot be
1901 * [Comment by Tom Dinger -- a directory can have the write-protect
1902 * bit set in the file system, but DOS permits changes to
1903 * the directory anyway. In addition, all bets are off
1904 * here for networked software, such as Novell and
1908 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1909 * too so it will actually look into the files for magic numbers
1911 return (mode & statbufp->st_mode) ? TRUE : FALSE;
1913 #else /* ! DOSISH */
1914 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1915 if (mode == S_IXUSR) {
1916 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1920 return TRUE; /* root reads and writes anything */
1923 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1924 if (statbufp->st_mode & mode)
1925 return TRUE; /* ok as "user" */
1927 else if (ingroup(statbufp->st_gid,effective)) {
1928 if (statbufp->st_mode & mode >> 3)
1929 return TRUE; /* ok as "group" */
1931 else if (statbufp->st_mode & mode >> 6)
1932 return TRUE; /* ok as "other" */
1934 #endif /* ! DOSISH */
1939 Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
1941 #ifdef MACOS_TRADITIONAL
1942 /* This is simply not correct for AppleShare, but fix it yerself. */
1945 if (testgid == (effective ? PL_egid : PL_gid))
1947 #ifdef HAS_GETGROUPS
1952 Groups_t gary[NGROUPS];
1955 anum = getgroups(NGROUPS,gary);
1957 if (gary[anum] == testgid)
1965 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1968 Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
1970 key_t key = (key_t)SvNVx(*++mark);
1971 const I32 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1972 const I32 flags = SvIVx(*++mark);
1980 return msgget(key, flags);
1984 return semget(key, n, flags);
1988 return shmget(key, n, flags);
1990 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1992 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
1995 return -1; /* should never happen */
1999 Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
2003 I32 infosize, getinfo;
2005 const I32 id = SvIVx(*++mark);
2006 const I32 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
2007 const I32 cmd = SvIVx(*++mark);
2012 getinfo = (cmd == IPC_STAT);
2018 if (cmd == IPC_STAT || cmd == IPC_SET)
2019 infosize = sizeof(struct msqid_ds);
2024 if (cmd == IPC_STAT || cmd == IPC_SET)
2025 infosize = sizeof(struct shmid_ds);
2031 if (cmd == IPC_STAT || cmd == IPC_SET)
2032 infosize = sizeof(struct semid_ds);
2033 else if (cmd == GETALL || cmd == SETALL)
2035 struct semid_ds semds;
2037 #ifdef EXTRA_F_IN_SEMUN_BUF
2038 semun.buff = &semds;
2042 getinfo = (cmd == GETALL);
2043 if (Semctl(id, 0, IPC_STAT, semun) == -1)
2045 infosize = semds.sem_nsems * sizeof(short);
2046 /* "short" is technically wrong but much more portable
2047 than guessing about u_?short(_t)? */
2050 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2054 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
2056 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2065 SvPV_force(astr, len);
2066 a = SvGROW(astr, infosize+1);
2070 a = SvPV(astr, len);
2071 if (len != infosize)
2072 Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
2081 a = INT2PTR(char *,i); /* ouch */
2088 ret = msgctl(id, cmd, (struct msqid_ds *)a);
2094 union semun unsemds;
2096 #ifdef EXTRA_F_IN_SEMUN_BUF
2097 unsemds.buff = (struct semid_ds *)a;
2099 unsemds.buf = (struct semid_ds *)a;
2101 ret = Semctl(id, n, cmd, unsemds);
2103 Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
2110 ret = shmctl(id, cmd, (struct shmid_ds *)a);
2114 if (getinfo && ret >= 0) {
2115 SvCUR_set(astr, infosize);
2116 *SvEND(astr) = '\0';
2123 Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
2130 const I32 id = SvIVx(*++mark);
2134 flags = SvIVx(*++mark);
2135 mbuf = SvPV(mstr, len);
2136 if ((msize = len - sizeof(long)) < 0)
2137 Perl_croak(aTHX_ "Arg too short for msgsnd");
2139 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
2141 Perl_croak(aTHX_ "msgsnd not implemented");
2146 Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
2152 I32 msize, flags, ret;
2154 const I32 id = SvIVx(*++mark);
2158 /* suppress warning when reading into undef var --jhi */
2160 sv_setpvn(mstr, "", 0);
2161 msize = SvIVx(*++mark);
2162 mtype = (long)SvIVx(*++mark);
2163 flags = SvIVx(*++mark);
2164 SvPV_force(mstr, len);
2165 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
2168 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
2170 SvCUR_set(mstr, sizeof(long)+ret);
2171 *SvEND(mstr) = '\0';
2172 #ifndef INCOMPLETE_TAINTS
2173 /* who knows who has been playing with this message? */
2179 Perl_croak(aTHX_ "msgrcv not implemented");
2184 Perl_do_semop(pTHX_ SV **mark, SV **sp)
2190 const I32 id = SvIVx(*++mark);
2194 opbuf = SvPV(opstr, opsize);
2195 if (opsize < 3 * SHORTSIZE
2196 || (opsize % (3 * SHORTSIZE))) {
2197 SETERRNO(EINVAL,LIB_INVARG);
2201 /* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
2203 const int nsops = opsize / (3 * sizeof (short));
2205 short *ops = (short *) opbuf;
2207 struct sembuf *temps, *t;
2210 New (0, temps, nsops, struct sembuf);
2218 result = semop(id, temps, nsops);
2232 Perl_croak(aTHX_ "semop not implemented");
2237 Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
2244 struct shmid_ds shmds;
2245 const I32 id = SvIVx(*++mark);
2249 mpos = SvIVx(*++mark);
2250 msize = SvIVx(*++mark);
2252 if (shmctl(id, IPC_STAT, &shmds) == -1)
2254 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
2255 SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */
2258 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
2259 if (shm == (char *)-1) /* I hate System V IPC, I really do */
2261 if (optype == OP_SHMREAD) {
2263 /* suppress warning when reading into undef var (tchrist 3/Mar/00) */
2265 sv_setpvn(mstr, "", 0);
2266 SvPV_force(mstr, len);
2267 mbuf = SvGROW(mstr, msize+1);
2269 Copy(shm + mpos, mbuf, msize, char);
2270 SvCUR_set(mstr, msize);
2271 *SvEND(mstr) = '\0';
2273 #ifndef INCOMPLETE_TAINTS
2274 /* who knows who has been playing with this shared memory? */
2281 const char *mbuf = SvPV(mstr, len);
2282 if ((n = len) > msize)
2284 Copy(mbuf, shm + mpos, n, char);
2286 memzero(shm + mpos + n, msize - n);
2290 Perl_croak(aTHX_ "shm I/O not implemented");
2294 #endif /* SYSV IPC */
2299 =for apidoc start_glob
2301 Function called by C<do_readline> to spawn a glob (or do the glob inside
2302 perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
2303 this glob starter is only used by miniperl during the build process.
2304 Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
2310 Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
2313 SV *tmpcmd = NEWSV(55, 0);
2317 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
2318 /* since spawning off a process is a real performance hit */
2320 #include <descrip.h>
2321 #include <lib$routines.h>
2324 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
2325 char vmsspec[NAM$C_MAXRSS+1];
2326 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
2327 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
2330 struct dsc$descriptor_s wilddsc
2331 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
2332 struct dsc$descriptor_vs rsdsc
2333 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
2334 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
2336 /* We could find out if there's an explicit dev/dir or version
2337 by peeking into lib$find_file's internal context at
2338 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
2339 but that's unsupported, so I don't want to do it now and
2340 have it bite someone in the future. */
2341 cp = SvPV(tmpglob,i);
2343 if (cp[i] == ';') hasver = 1;
2345 if (sts) hasver = 1;
2349 hasdir = isunix = 1;
2352 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
2357 if ((tmpfp = PerlIO_tmpfile()) != NULL) {
2359 if (!PerlLIO_stat(SvPVX_const(tmpglob),&st) && S_ISDIR(st.st_mode))
2360 ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
2361 else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
2362 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
2363 for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
2364 if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
2365 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
2366 &dfltdsc,NULL,NULL,NULL))&1)) {
2367 /* with varying string, 1st word of buffer contains result length */
2368 end = rstr + *((unsigned short int*)rslt);
2369 if (!hasver) while (*end != ';' && end > rstr) end--;
2370 *(end++) = '\n'; *end = '\0';
2371 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
2373 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
2378 while (*(--begin) != ']' && *begin != '>') ;
2381 ok = (PerlIO_puts(tmpfp,begin) != EOF);
2383 if (cxt) (void)lib$find_file_end(&cxt);
2384 if (ok && sts != RMS$_NMF &&
2385 sts != RMS$_DNF && sts != RMS_FNF) ok = 0;
2388 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
2390 PerlIO_close(tmpfp);
2394 PerlIO_rewind(tmpfp);
2395 IoTYPE(io) = IoTYPE_RDONLY;
2396 IoIFP(io) = fp = tmpfp;
2397 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
2402 #ifdef MACOS_TRADITIONAL
2403 sv_setpv(tmpcmd, "glob ");
2404 sv_catsv(tmpcmd, tmpglob);
2405 sv_catpv(tmpcmd, " |");
2409 sv_setpv(tmpcmd, "for a in ");
2410 sv_catsv(tmpcmd, tmpglob);
2411 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
2414 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
2415 sv_catsv(tmpcmd, tmpglob);
2417 sv_setpv(tmpcmd, "perlglob ");
2418 sv_catsv(tmpcmd, tmpglob);
2419 sv_catpv(tmpcmd, " |");
2424 sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
2425 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
2426 sv_catsv(tmpcmd, tmpglob);
2427 sv_catpv(tmpcmd, "' 2>/dev/null |");
2429 sv_setpv(tmpcmd, "echo ");
2430 sv_catsv(tmpcmd, tmpglob);
2432 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
2434 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
2437 #endif /* !DOSISH */
2438 #endif /* MACOS_TRADITIONAL */
2439 (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
2440 FALSE, O_RDONLY, 0, Nullfp);
2449 * c-indentation-style: bsd
2451 * indent-tabs-mode: t
2454 * ex: set ts=8 sts=4 sw=4 noet: