3 * Copyright (c) 1991-1997, 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."
20 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
30 # ifndef HAS_SHMAT_PROTOTYPE
31 extern Shmat_t shmat _((int, char *, int));
37 # if defined(_MSC_VER) || defined(__MINGW32__)
38 # include <sys/utime.h>
51 # define OPEN_EXCL O_EXCL
56 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
60 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
65 #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */
66 # include <sys/socket.h>
70 # include <net/errno.h>
75 /* Put this after #includes because <unistd.h> defines _XOPEN_*. */
77 # if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__)
78 # define Sock_size_t Size_t
80 # define Sock_size_t int
85 do_open(GV *gv, register char *name, I32 len, int as_raw, int rawmode, int rawperm, PerlIO *supplied_fp)
87 register IO *io = GvIOn(gv);
88 PerlIO *saveifp = Nullfp;
89 PerlIO *saveofp = Nullfp;
95 bool was_fdopen = FALSE;
97 PL_forkprocess = 1; /* assume true if no fork */
100 fd = PerlIO_fileno(IoIFP(io));
101 if (IoTYPE(io) == '-')
103 else if (fd <= PL_maxsysfd) {
106 savetype = IoTYPE(io);
109 else if (IoTYPE(io) == '|')
110 result = PerlProc_pclose(IoIFP(io));
111 else if (IoIFP(io) != IoOFP(io)) {
113 result = PerlIO_close(IoOFP(io));
114 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
117 result = PerlIO_close(IoIFP(io));
120 result = PerlIO_close(IoIFP(io));
121 if (result == EOF && fd > PL_maxsysfd)
122 PerlIO_printf(PerlIO_stderr(), "Warning: unable to close filehandle %s properly.\n",
124 IoOFP(io) = IoIFP(io) = Nullfp;
128 #if defined(O_LARGEFILE)
129 rawmode |= O_LARGEFILE;
133 #define O_ACCMODE 3 /* Assume traditional implementation */
136 switch (result = rawmode & O_ACCMODE) {
149 writing = (result > 0);
150 fd = PerlLIO_open3(name, rawmode, rawperm);
156 if (result == O_RDONLY)
159 else if (rawmode & O_APPEND)
160 fpmode = (result == O_WRONLY) ? "a" : "a+";
163 fpmode = (result == O_WRONLY) ? "w" : "r+";
164 fp = PerlIO_fdopen(fd, fpmode);
171 char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
174 myname = savepvn(name, len);
177 while (len && isSPACE(name[len-1]))
180 mode[0] = mode[1] = mode[2] = '\0';
182 if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */
190 for (name++; isSPACE(*name); name++) ;
193 TAINT_PROPER("piped open");
194 if (name[strlen(name)-1] == '|') {
196 name[strlen(name)-1] = '\0' ;
197 if (ckWARN(WARN_PIPE))
198 warner(WARN_PIPE, "Can't do bidirectional pipe");
200 fp = PerlProc_popen(name,"w");
203 else if (*name == '>') {
204 TAINT_PROPER("open");
207 mode[0] = IoTYPE(io) = 'a';
222 if (!*name && supplied_fp)
226 for (; isSPACE(*name); name++) ;
231 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
235 SETERRNO(EINVAL,SS$_IVCHAN);
240 fd = PerlIO_fileno(IoIFP(thatio));
241 if (IoTYPE(thatio) == 's')
248 fd = PerlLIO_dup(fd);
251 if (!(fp = PerlIO_fdopen(fd,mode))) {
259 for (; isSPACE(*name); name++) ;
260 if (strEQ(name,"-")) {
261 fp = PerlIO_stdout();
265 fp = PerlIO_open(name,mode);
269 else if (*name == '<') {
271 for (name++; isSPACE(*name); name++) ;
275 if (strEQ(name,"-")) {
280 fp = PerlIO_open(name,mode);
282 else if (len > 1 && name[len-1] == '|') {
284 while (len && isSPACE(name[len-1]))
287 for (; isSPACE(*name); name++) ;
290 TAINT_PROPER("piped open");
291 fp = PerlProc_popen(name,"r");
297 for (; isSPACE(*name); name++) ;
298 if (strEQ(name,"-")) {
303 fp = PerlIO_open(name,"r");
308 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == '<' && strchr(name, '\n'))
309 warner(WARN_NEWLINE, PL_warn_nl, "open");
313 IoTYPE(io) != '|' && IoTYPE(io) != '-') {
315 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
316 (void)PerlIO_close(fp);
319 if (S_ISSOCK(PL_statbuf.st_mode))
320 IoTYPE(io) = 's'; /* in case a socket was passed in to us */
324 !(PL_statbuf.st_mode & S_IFMT)
330 Sock_size_t buflen = sizeof tmpbuf;
331 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
333 || errno != ENOTSOCK)
334 IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
335 /* but some return 0 for streams too, sigh */
339 if (saveifp) { /* must use old fp? */
340 fd = PerlIO_fileno(saveifp);
342 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
343 if (saveofp != saveifp) { /* was a socket? */
344 PerlIO_close(saveofp);
349 if (fd != PerlIO_fileno(fp)) {
353 PerlLIO_dup2(PerlIO_fileno(fp), fd);
354 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
355 (void)SvUPGRADE(sv, SVt_IV);
358 sv = *av_fetch(PL_fdpid,fd,TRUE);
359 (void)SvUPGRADE(sv, SVt_IV);
368 #if defined(HAS_FCNTL) && defined(F_SETFD)
369 fd = PerlIO_fileno(fp);
370 fcntl(fd,F_SETFD,fd > PL_maxsysfd);
375 if (IoTYPE(io) == 's'
376 || (IoTYPE(io) == '>' && S_ISCHR(PL_statbuf.st_mode)) ) {
377 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
391 IoTYPE(io) = savetype;
396 nextargv(register GV *gv)
399 #ifndef FLEXFILENAMES
407 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
408 if (PL_filemode & (S_ISUID|S_ISGID)) {
409 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
411 (void)fchmod(PL_lastfd,PL_filemode);
413 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
417 while (av_len(GvAV(gv)) >= 0) {
420 sv = av_shift(GvAV(gv));
422 sv_setsv(GvSV(gv),sv);
423 SvSETMAGIC(GvSV(gv));
424 PL_oldname = SvPVx(GvSV(gv), oldlen);
425 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
427 TAINT_PROPER("inplace open");
428 if (oldlen == 1 && *PL_oldname == '-') {
429 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
430 return IoIFP(GvIOp(gv));
432 #ifndef FLEXFILENAMES
433 filedev = PL_statbuf.st_dev;
434 fileino = PL_statbuf.st_ino;
436 PL_filemode = PL_statbuf.st_mode;
437 fileuid = PL_statbuf.st_uid;
438 filegid = PL_statbuf.st_gid;
439 if (!S_ISREG(PL_filemode)) {
440 warn("Can't do inplace edit: %s is not a regular file",
446 char *star = strchr(PL_inplace, '*');
448 char *begin = PL_inplace;
449 sv_setpvn(sv, "", 0);
451 sv_catpvn(sv, begin, star - begin);
452 sv_catpvn(sv, PL_oldname, oldlen);
454 } while ((star = strchr(begin, '*')));
459 sv_catpv(sv,PL_inplace);
461 #ifndef FLEXFILENAMES
462 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
463 && PL_statbuf.st_dev == filedev
464 && PL_statbuf.st_ino == fileino
466 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
469 warn("Can't do inplace edit: %s would not be uniq",
477 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
478 warn("Can't rename %s to %s: %s, skipping file",
479 PL_oldname, SvPVX(sv), Strerror(errno) );
485 (void)PerlLIO_unlink(SvPVX(sv));
486 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
487 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
490 (void)UNLINK(SvPVX(sv));
491 if (link(PL_oldname,SvPVX(sv)) < 0) {
492 warn("Can't rename %s to %s: %s, skipping file",
493 PL_oldname, SvPVX(sv), Strerror(errno) );
497 (void)UNLINK(PL_oldname);
501 #if !defined(DOSISH) && !defined(AMIGAOS)
502 # ifndef VMS /* Don't delete; use automatic file versioning */
503 if (UNLINK(PL_oldname) < 0) {
504 warn("Can't remove %s: %s, skipping file",
505 PL_oldname, Strerror(errno) );
511 croak("Can't do inplace edit without backup");
515 sv_setpvn(sv,">",!PL_inplace);
516 sv_catpvn(sv,PL_oldname,oldlen);
517 SETERRNO(0,0); /* in case sprintf set errno */
519 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
520 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp)) {
522 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
523 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp)) {
525 warn("Can't do inplace edit on %s: %s",
526 PL_oldname, Strerror(errno) );
530 setdefout(PL_argvoutgv);
531 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
532 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
534 (void)fchmod(PL_lastfd,PL_filemode);
536 # if !(defined(WIN32) && defined(__BORLANDC__))
537 /* Borland runtime creates a readonly file! */
538 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
541 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
543 (void)fchown(PL_lastfd,fileuid,filegid);
546 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
551 return IoIFP(GvIOp(gv));
554 PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",
555 SvPV(sv, PL_na), Strerror(errno));
558 (void)do_close(PL_argvoutgv,FALSE);
559 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
566 do_pipe(SV *sv, GV *rgv, GV *wgv)
585 if (PerlProc_pipe(fd) < 0)
587 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
588 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
589 IoIFP(wstio) = IoOFP(wstio);
592 if (!IoIFP(rstio) || !IoOFP(wstio)) {
593 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
594 else PerlLIO_close(fd[0]);
595 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
596 else PerlLIO_close(fd[1]);
600 sv_setsv(sv,&PL_sv_yes);
604 sv_setsv(sv,&PL_sv_undef);
609 /* explicit renamed to avoid C++ conflict -- kja */
611 do_close(GV *gv, bool not_implicit)
618 if (!gv || SvTYPE(gv) != SVt_PVGV) {
620 SETERRNO(EBADF,SS$_IVCHAN);
624 if (!io) { /* never opened */
627 if (ckWARN(WARN_UNOPENED))
628 warner(WARN_UNOPENED,
629 "Close on unopened file <%s>",GvENAME(gv));
630 SETERRNO(EBADF,SS$_IVCHAN);
634 retval = io_close(io);
638 IoLINES_LEFT(io) = IoPAGE_LEN(io);
651 if (IoTYPE(io) == '|') {
652 status = PerlProc_pclose(IoIFP(io));
653 STATUS_NATIVE_SET(status);
654 retval = (STATUS_POSIX == 0);
656 else if (IoTYPE(io) == '-')
659 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
660 retval = (PerlIO_close(IoOFP(io)) != EOF);
661 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
664 retval = (PerlIO_close(IoIFP(io)) != EOF);
666 IoOFP(io) = IoIFP(io) = Nullfp;
669 SETERRNO(EBADF,SS$_IVCHAN);
689 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
690 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
691 return FALSE; /* this is the most usual case */
694 ch = PerlIO_getc(IoIFP(io));
696 (void)PerlIO_ungetc(IoIFP(io),ch);
699 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
700 if (PerlIO_get_cnt(IoIFP(io)) < -1)
701 PerlIO_set_cnt(IoIFP(io),-1);
703 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
704 if (!nextargv(PL_argvgv)) /* get another fp handy */
708 return TRUE; /* normal fp, definitely end of file */
719 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
720 #ifdef ULTRIX_STDIO_BOTCH
722 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
724 return PerlIO_tell(fp);
728 if (ckWARN(WARN_UNOPENED))
729 warner(WARN_UNOPENED, "tell() on unopened file");
731 SETERRNO(EBADF,RMS$_IFI);
736 do_seek(GV *gv, Off_t pos, int whence)
741 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
742 #ifdef ULTRIX_STDIO_BOTCH
744 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
746 return PerlIO_seek(fp, pos, whence) >= 0;
750 if (ckWARN(WARN_UNOPENED))
751 warner(WARN_UNOPENED, "seek() on unopened file");
753 SETERRNO(EBADF,RMS$_IFI);
758 do_sysseek(GV *gv, Off_t pos, int whence)
763 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
764 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
767 if (ckWARN(WARN_UNOPENED))
768 warner(WARN_UNOPENED, "sysseek() on unopened file");
770 SETERRNO(EBADF,RMS$_IFI);
775 do_binmode(PerlIO *fp, int iotype, int flag)
778 croak("panic: unsetting binmode"); /* Not implemented yet */
781 if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN))
786 if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) {
787 #if defined(WIN32) && defined(__BORLANDC__)
788 /* The translation mode of the stream is maintained independent
789 * of the translation mode of the fd in the Borland RTL (heavy
790 * digging through their runtime sources reveal). User has to
791 * set the mode explicitly for the stream (though they don't
792 * document this anywhere). GSAR 97-5-24
794 PerlIO_seek(fp,0L,0);
795 ((FILE*)fp)->flags |= _F_BIN;
803 #if defined(USEMYBINMODE)
804 if (my_binmode(fp,iotype) != NULL)
814 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
815 /* code courtesy of William Kucharski */
818 I32 my_chsize(fd, length)
819 I32 fd; /* file descriptor */
820 Off_t length; /* length to set file to */
825 if (PerlLIO_fstat(fd, &filebuf) < 0)
828 if (filebuf.st_size < length) {
830 /* extend file length */
832 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
835 /* write a "0" byte */
837 if ((PerlLIO_write(fd, "", 1)) != 1)
841 /* truncate length */
846 fl.l_type = F_WRLCK; /* write lock on file space */
849 * This relies on the UNDOCUMENTED F_FREESP argument to
850 * fcntl(2), which truncates the file so that it ends at the
851 * position indicated by fl.l_start.
853 * Will minor miracles never cease?
856 if (fcntl(fd, F_FREESP, &fl) < 0)
863 #endif /* F_FREESP */
866 do_print(register SV *sv, PerlIO *fp)
871 /* assuming fp is checked earlier */
877 if (SvIOK(sv) && SvIVX(sv) != 0) {
878 PerlIO_printf(fp, PL_ofmt, (double)SvIVX(sv));
879 return !PerlIO_error(fp);
881 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
882 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
883 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
884 return !PerlIO_error(fp);
887 switch (SvTYPE(sv)) {
891 if (ckWARN(WARN_UNINITIALIZED))
892 warner(WARN_UNINITIALIZED, PL_warn_uninit);
899 PerlIO_printf(fp, "%ld", (long)SvIVX(sv));
900 return !PerlIO_error(fp);
904 tmps = SvPV(sv, len);
907 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
909 return !PerlIO_error(fp);
919 if (PL_op->op_flags & OPf_REF) {
921 tmpgv = cGVOP->op_gv;
924 if (io && IoIFP(io)) {
926 sv_setpv(PL_statname,"");
927 PL_laststype = OP_STAT;
928 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
931 if (tmpgv == PL_defgv)
932 return PL_laststatval;
933 if (ckWARN(WARN_UNOPENED))
934 warner(WARN_UNOPENED, "Stat on unopened file <%s>",
937 sv_setpv(PL_statname,"");
938 return (PL_laststatval = -1);
945 if (SvTYPE(sv) == SVt_PVGV) {
949 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
950 tmpgv = (GV*)SvRV(sv);
956 sv_setpv(PL_statname, s);
957 PL_laststype = OP_STAT;
958 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
959 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
960 warner(WARN_NEWLINE, PL_warn_nl, "stat");
961 return PL_laststatval;
970 if (PL_op->op_flags & OPf_REF) {
972 if (cGVOP->op_gv == PL_defgv) {
973 if (PL_laststype != OP_LSTAT)
974 croak("The stat preceding -l _ wasn't an lstat");
975 return PL_laststatval;
977 croak("You can't use -l on a filehandle");
980 PL_laststype = OP_LSTAT;
984 sv_setpv(PL_statname,SvPV(sv, PL_na));
986 PL_laststatval = PerlLIO_lstat(SvPV(sv, PL_na),&PL_statcache);
988 PL_laststatval = PerlLIO_stat(SvPV(sv, PL_na),&PL_statcache);
990 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, PL_na), '\n'))
991 warner(WARN_NEWLINE, PL_warn_nl, "lstat");
992 return PL_laststatval;
996 do_aexec(SV *really, register SV **mark, register SV **sp)
1003 New(401,PL_Argv, sp - mark + 1, char*);
1005 while (++mark <= sp) {
1007 *a++ = SvPVx(*mark, PL_na);
1012 if (*PL_Argv[0] != '/') /* will execvp use PATH? */
1013 TAINT_ENV(); /* testing IFS here is overkill, probably */
1014 if (really && *(tmps = SvPV(really, PL_na)))
1015 PerlProc_execvp(tmps,PL_Argv);
1017 PerlProc_execvp(PL_Argv[0],PL_Argv);
1018 if (ckWARN(WARN_EXEC))
1019 warner(WARN_EXEC, "Can't exec \"%s\": %s",
1020 PL_Argv[0], Strerror(errno));
1031 PL_Argv = Null(char **);
1039 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP)
1048 while (*cmd && isSPACE(*cmd))
1051 /* save an extra exec if possible */
1054 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1056 s = cmd+PL_cshlen+3;
1070 if (s[-1] == '\'') {
1072 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1080 /* see if there are shell metacharacters in it */
1082 if (*cmd == '.' && isSPACE(cmd[1]))
1085 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1088 for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
1092 for (s = cmd; *s; s++) {
1093 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1094 if (*s == '\n' && !s[1]) {
1099 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1104 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1105 PL_Cmd = savepvn(cmd, s-cmd);
1107 for (s = PL_Cmd; *s;) {
1108 while (*s && isSPACE(*s)) s++;
1111 while (*s && !isSPACE(*s)) s++;
1117 PerlProc_execvp(PL_Argv[0],PL_Argv);
1118 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1124 if (ckWARN(WARN_EXEC))
1125 warner(WARN_EXEC, "Can't exec \"%s\": %s",
1126 PL_Argv[0], Strerror(errno));
1133 #endif /* OS2 || WIN32 */
1136 apply(I32 type, register SV **mark, register SV **sp)
1141 register I32 tot = 0;
1144 SV **oldmark = mark;
1146 #define APPLY_TAINT_PROPER() \
1148 if (PL_tainting && PL_tainted) { goto taint_proper_label; } \
1151 /* This is a first heuristic; it doesn't catch tainting magic. */
1153 while (++mark <= sp) {
1154 if (SvTAINTED(*mark)) {
1164 APPLY_TAINT_PROPER();
1167 APPLY_TAINT_PROPER();
1169 while (++mark <= sp) {
1170 char *name = SvPVx(*mark, PL_na);
1171 APPLY_TAINT_PROPER();
1172 if (PerlLIO_chmod(name, val))
1180 APPLY_TAINT_PROPER();
1181 if (sp - mark > 2) {
1182 val = SvIVx(*++mark);
1183 val2 = SvIVx(*++mark);
1184 APPLY_TAINT_PROPER();
1186 while (++mark <= sp) {
1187 char *name = SvPVx(*mark, PL_na);
1188 APPLY_TAINT_PROPER();
1189 if (PerlLIO_chown(name, val, val2))
1196 XXX Should we make lchown() directly available from perl?
1197 For now, we'll let Configure test for HAS_LCHOWN, but do
1198 nothing in the core.
1204 APPLY_TAINT_PROPER();
1207 s = SvPVx(*++mark, PL_na);
1209 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1211 if (!(val = whichsig(s)))
1212 croak("Unrecognized signal name \"%s\"",s);
1216 APPLY_TAINT_PROPER();
1219 /* kill() doesn't do process groups (job trees?) under VMS */
1220 if (val < 0) val = -val;
1221 if (val == SIGKILL) {
1222 # include <starlet.h>
1223 /* Use native sys$delprc() to insure that target process is
1224 * deleted; supervisor-mode images don't pay attention to
1225 * CRTL's emulation of Unix-style signals and kill()
1227 while (++mark <= sp) {
1228 I32 proc = SvIVx(*mark);
1229 register unsigned long int __vmssts;
1230 APPLY_TAINT_PROPER();
1231 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1235 case SS$_NOSUCHNODE:
1236 SETERRNO(ESRCH,__vmssts);
1239 SETERRNO(EPERM,__vmssts);
1242 SETERRNO(EVMSERR,__vmssts);
1251 while (++mark <= sp) {
1252 I32 proc = SvIVx(*mark);
1253 APPLY_TAINT_PROPER();
1255 if (PerlProc_killpg(proc,val)) /* BSD */
1257 if (PerlProc_kill(-proc,val)) /* SYSV */
1263 while (++mark <= sp) {
1264 I32 proc = SvIVx(*mark);
1265 APPLY_TAINT_PROPER();
1266 if (PerlProc_kill(proc, val))
1274 APPLY_TAINT_PROPER();
1276 while (++mark <= sp) {
1277 s = SvPVx(*mark, PL_na);
1278 APPLY_TAINT_PROPER();
1279 if (PL_euid || PL_unsafe) {
1283 else { /* don't let root wipe out directories without -U */
1285 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1287 if (PerlLIO_stat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1300 APPLY_TAINT_PROPER();
1301 if (sp - mark > 2) {
1302 #if defined(I_UTIME) || defined(VMS)
1303 struct utimbuf utbuf;
1311 Zero(&utbuf, sizeof utbuf, char);
1313 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1314 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1316 utbuf.actime = SvIVx(*++mark); /* time accessed */
1317 utbuf.modtime = SvIVx(*++mark); /* time modified */
1319 APPLY_TAINT_PROPER();
1321 while (++mark <= sp) {
1322 char *name = SvPVx(*mark, PL_na);
1323 APPLY_TAINT_PROPER();
1324 if (PerlLIO_utime(name, &utbuf))
1337 return 0; /* this should never happen */
1339 #undef APPLY_TAINT_PROPER
1342 /* Do the permissions allow some operation? Assumes statcache already set. */
1343 #ifndef VMS /* VMS' cando is in vms.c */
1345 cando(I32 bit, I32 effective, register struct stat *statbufp)
1348 /* [Comments and code from Len Reed]
1349 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1350 * to write-protected files. The execute permission bit is set
1351 * by the Miscrosoft C library stat() function for the following:
1356 * All files and directories are readable.
1357 * Directories and special files, e.g. "CON", cannot be
1359 * [Comment by Tom Dinger -- a directory can have the write-protect
1360 * bit set in the file system, but DOS permits changes to
1361 * the directory anyway. In addition, all bets are off
1362 * here for networked software, such as Novell and
1366 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1367 * too so it will actually look into the files for magic numbers
1369 return (bit & statbufp->st_mode) ? TRUE : FALSE;
1371 #else /* ! DOSISH */
1372 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1373 if (bit == S_IXUSR) {
1374 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1378 return TRUE; /* root reads and writes anything */
1381 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1382 if (statbufp->st_mode & bit)
1383 return TRUE; /* ok as "user" */
1385 else if (ingroup((I32)statbufp->st_gid,effective)) {
1386 if (statbufp->st_mode & bit >> 3)
1387 return TRUE; /* ok as "group" */
1389 else if (statbufp->st_mode & bit >> 6)
1390 return TRUE; /* ok as "other" */
1392 #endif /* ! DOSISH */
1397 ingroup(I32 testgid, I32 effective)
1399 if (testgid == (effective ? PL_egid : PL_gid))
1401 #ifdef HAS_GETGROUPS
1406 Groups_t gary[NGROUPS];
1409 anum = getgroups(NGROUPS,gary);
1411 if (gary[anum] == testgid)
1418 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1421 do_ipcget(I32 optype, SV **mark, SV **sp)
1427 key = (key_t)SvNVx(*++mark);
1428 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1429 flags = SvIVx(*++mark);
1435 return msgget(key, flags);
1439 return semget(key, n, flags);
1443 return shmget(key, n, flags);
1445 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1447 croak("%s not implemented", PL_op_desc[optype]);
1450 return -1; /* should never happen */
1454 do_ipcctl(I32 optype, SV **mark, SV **sp)
1459 I32 id, n, cmd, infosize, getinfo;
1462 id = SvIVx(*++mark);
1463 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1464 cmd = SvIVx(*++mark);
1467 getinfo = (cmd == IPC_STAT);
1473 if (cmd == IPC_STAT || cmd == IPC_SET)
1474 infosize = sizeof(struct msqid_ds);
1479 if (cmd == IPC_STAT || cmd == IPC_SET)
1480 infosize = sizeof(struct shmid_ds);
1485 if (cmd == IPC_STAT || cmd == IPC_SET)
1486 infosize = sizeof(struct semid_ds);
1487 else if (cmd == GETALL || cmd == SETALL)
1489 struct semid_ds semds;
1493 getinfo = (cmd == GETALL);
1494 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1496 infosize = semds.sem_nsems * sizeof(short);
1497 /* "short" is technically wrong but much more portable
1498 than guessing about u_?short(_t)? */
1502 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1504 croak("%s not implemented", PL_op_desc[optype]);
1513 SvPV_force(astr, len);
1514 a = SvGROW(astr, infosize+1);
1518 a = SvPV(astr, len);
1519 if (len != infosize)
1520 croak("Bad arg length for %s, is %lu, should be %ld",
1529 a = (char *)i; /* ouch */
1536 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1541 union semun unsemds;
1543 unsemds.buf = (struct semid_ds *)a;
1544 ret = Semctl(id, n, cmd, unsemds);
1550 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1554 if (getinfo && ret >= 0) {
1555 SvCUR_set(astr, infosize);
1556 *SvEND(astr) = '\0';
1563 do_msgsnd(SV **mark, SV **sp)
1569 I32 id, msize, flags;
1572 id = SvIVx(*++mark);
1574 flags = SvIVx(*++mark);
1575 mbuf = SvPV(mstr, len);
1576 if ((msize = len - sizeof(long)) < 0)
1577 croak("Arg too short for msgsnd");
1579 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1581 croak("msgsnd not implemented");
1586 do_msgrcv(SV **mark, SV **sp)
1593 I32 id, msize, flags, ret;
1596 id = SvIVx(*++mark);
1598 msize = SvIVx(*++mark);
1599 mtype = (long)SvIVx(*++mark);
1600 flags = SvIVx(*++mark);
1601 if (SvTHINKFIRST(mstr)) {
1602 if (SvREADONLY(mstr))
1603 croak("Can't msgrcv to readonly var");
1607 SvPV_force(mstr, len);
1608 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1611 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1613 SvCUR_set(mstr, sizeof(long)+ret);
1614 *SvEND(mstr) = '\0';
1618 croak("msgrcv not implemented");
1623 do_semop(SV **mark, SV **sp)
1632 id = SvIVx(*++mark);
1634 opbuf = SvPV(opstr, opsize);
1635 if (opsize < sizeof(struct sembuf)
1636 || (opsize % sizeof(struct sembuf)) != 0) {
1637 SETERRNO(EINVAL,LIB$_INVARG);
1641 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1643 croak("semop not implemented");
1648 do_shmio(I32 optype, SV **mark, SV **sp)
1654 I32 id, mpos, msize;
1656 struct shmid_ds shmds;
1658 id = SvIVx(*++mark);
1660 mpos = SvIVx(*++mark);
1661 msize = SvIVx(*++mark);
1663 if (shmctl(id, IPC_STAT, &shmds) == -1)
1665 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1666 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1669 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1670 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1672 if (optype == OP_SHMREAD) {
1673 SvPV_force(mstr, len);
1674 mbuf = SvGROW(mstr, msize+1);
1676 Copy(shm + mpos, mbuf, msize, char);
1677 SvCUR_set(mstr, msize);
1678 *SvEND(mstr) = '\0';
1684 mbuf = SvPV(mstr, len);
1685 if ((n = len) > msize)
1687 Copy(mbuf, shm + mpos, n, char);
1689 memzero(shm + mpos + n, msize - n);
1693 croak("shm I/O not implemented");
1697 #endif /* SYSV IPC */