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;
129 #define O_ACCMODE 3 /* Assume traditional implementation */
131 switch (result = rawmode & O_ACCMODE) {
144 writing = (result > 0);
145 fd = PerlLIO_open3(name, rawmode, rawperm);
151 if (result == O_RDONLY)
154 else if (rawmode & O_APPEND)
155 fpmode = (result == O_WRONLY) ? "a" : "a+";
158 fpmode = (result == O_WRONLY) ? "w" : "r+";
159 fp = PerlIO_fdopen(fd, fpmode);
166 char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
169 myname = savepvn(name, len);
172 while (len && isSPACE(name[len-1]))
175 mode[0] = mode[1] = mode[2] = '\0';
177 if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */
185 for (name++; isSPACE(*name); name++) ;
188 TAINT_PROPER("piped open");
189 if (name[strlen(name)-1] == '|') {
191 name[strlen(name)-1] = '\0' ;
192 if (ckWARN(WARN_PIPE))
193 warner(WARN_PIPE, "Can't do bidirectional pipe");
195 fp = PerlProc_popen(name,"w");
198 else if (*name == '>') {
199 TAINT_PROPER("open");
202 mode[0] = IoTYPE(io) = 'a';
217 if (!*name && supplied_fp)
221 for (; isSPACE(*name); name++) ;
226 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
230 SETERRNO(EINVAL,SS$_IVCHAN);
235 fd = PerlIO_fileno(IoIFP(thatio));
236 if (IoTYPE(thatio) == 's')
243 fd = PerlLIO_dup(fd);
246 if (!(fp = PerlIO_fdopen(fd,mode))) {
254 for (; isSPACE(*name); name++) ;
255 if (strEQ(name,"-")) {
256 fp = PerlIO_stdout();
260 fp = PerlIO_open(name,mode);
264 else if (*name == '<') {
266 for (name++; isSPACE(*name); name++) ;
270 if (strEQ(name,"-")) {
275 fp = PerlIO_open(name,mode);
277 else if (len > 1 && name[len-1] == '|') {
279 while (len && isSPACE(name[len-1]))
282 for (; isSPACE(*name); name++) ;
285 TAINT_PROPER("piped open");
286 fp = PerlProc_popen(name,"r");
292 for (; isSPACE(*name); name++) ;
293 if (strEQ(name,"-")) {
298 fp = PerlIO_open(name,"r");
303 if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == '<' && strchr(name, '\n'))
304 warner(WARN_NEWLINE, warn_nl, "open");
308 IoTYPE(io) != '|' && IoTYPE(io) != '-') {
310 if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
311 (void)PerlIO_close(fp);
314 if (S_ISSOCK(PL_statbuf.st_mode))
315 IoTYPE(io) = 's'; /* in case a socket was passed in to us */
319 !(PL_statbuf.st_mode & S_IFMT)
325 Sock_size_t buflen = sizeof tmpbuf;
326 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
328 || errno != ENOTSOCK)
329 IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
330 /* but some return 0 for streams too, sigh */
334 if (saveifp) { /* must use old fp? */
335 fd = PerlIO_fileno(saveifp);
337 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
338 if (saveofp != saveifp) { /* was a socket? */
339 PerlIO_close(saveofp);
344 if (fd != PerlIO_fileno(fp)) {
348 PerlLIO_dup2(PerlIO_fileno(fp), fd);
349 sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
350 (void)SvUPGRADE(sv, SVt_IV);
353 sv = *av_fetch(PL_fdpid,fd,TRUE);
354 (void)SvUPGRADE(sv, SVt_IV);
363 #if defined(HAS_FCNTL) && defined(F_SETFD)
364 fd = PerlIO_fileno(fp);
365 fcntl(fd,F_SETFD,fd > PL_maxsysfd);
370 if (IoTYPE(io) == 's'
371 || (IoTYPE(io) == '>' && S_ISCHR(PL_statbuf.st_mode)) ) {
372 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
386 IoTYPE(io) = savetype;
391 nextargv(register GV *gv)
394 #ifndef FLEXFILENAMES
402 PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
403 if (PL_filemode & (S_ISUID|S_ISGID)) {
404 PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
406 (void)fchmod(PL_lastfd,PL_filemode);
408 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
412 while (av_len(GvAV(gv)) >= 0) {
415 sv = av_shift(GvAV(gv));
417 sv_setsv(GvSV(gv),sv);
418 SvSETMAGIC(GvSV(gv));
419 PL_oldname = SvPVx(GvSV(gv), oldlen);
420 if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
422 TAINT_PROPER("inplace open");
423 if (oldlen == 1 && *PL_oldname == '-') {
424 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
425 return IoIFP(GvIOp(gv));
427 #ifndef FLEXFILENAMES
428 filedev = PL_statbuf.st_dev;
429 fileino = PL_statbuf.st_ino;
431 PL_filemode = PL_statbuf.st_mode;
432 fileuid = PL_statbuf.st_uid;
433 filegid = PL_statbuf.st_gid;
434 if (!S_ISREG(PL_filemode)) {
435 warn("Can't do inplace edit: %s is not a regular file",
441 char *star = strchr(PL_inplace, '*');
443 char *begin = PL_inplace;
444 sv_setpvn(sv, "", 0);
446 sv_catpvn(sv, begin, star - begin);
447 sv_catpvn(sv, PL_oldname, oldlen);
449 } while ((star = strchr(begin, '*')));
454 sv_catpv(sv,PL_inplace);
456 #ifndef FLEXFILENAMES
457 if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
458 && PL_statbuf.st_dev == filedev
459 && PL_statbuf.st_ino == fileino
461 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
464 warn("Can't do inplace edit: %s would not be uniq",
472 if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
473 warn("Can't rename %s to %s: %s, skipping file",
474 PL_oldname, SvPVX(sv), Strerror(errno) );
480 (void)PerlLIO_unlink(SvPVX(sv));
481 (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
482 do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
485 (void)UNLINK(SvPVX(sv));
486 if (link(PL_oldname,SvPVX(sv)) < 0) {
487 warn("Can't rename %s to %s: %s, skipping file",
488 PL_oldname, SvPVX(sv), Strerror(errno) );
492 (void)UNLINK(PL_oldname);
496 #if !defined(DOSISH) && !defined(AMIGAOS)
497 # ifndef VMS /* Don't delete; use automatic file versioning */
498 if (UNLINK(PL_oldname) < 0) {
499 warn("Can't remove %s: %s, skipping file",
500 PL_oldname, Strerror(errno) );
506 croak("Can't do inplace edit without backup");
510 sv_setpvn(sv,">",!PL_inplace);
511 sv_catpvn(sv,PL_oldname,oldlen);
512 SETERRNO(0,0); /* in case sprintf set errno */
514 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
515 O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp)) {
517 if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
518 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp)) {
520 warn("Can't do inplace edit on %s: %s",
521 PL_oldname, Strerror(errno) );
525 setdefout(PL_argvoutgv);
526 PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
527 (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
529 (void)fchmod(PL_lastfd,PL_filemode);
531 # if !(defined(WIN32) && defined(__BORLANDC__))
532 /* Borland runtime creates a readonly file! */
533 (void)PerlLIO_chmod(PL_oldname,PL_filemode);
536 if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
538 (void)fchown(PL_lastfd,fileuid,filegid);
541 (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
546 return IoIFP(GvIOp(gv));
549 PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",
550 SvPV(sv, PL_na), Strerror(errno));
553 (void)do_close(PL_argvoutgv,FALSE);
554 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
561 do_pipe(SV *sv, GV *rgv, GV *wgv)
580 if (PerlProc_pipe(fd) < 0)
582 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
583 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
584 IoIFP(wstio) = IoOFP(wstio);
587 if (!IoIFP(rstio) || !IoOFP(wstio)) {
588 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
589 else PerlLIO_close(fd[0]);
590 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
591 else PerlLIO_close(fd[1]);
595 sv_setsv(sv,&PL_sv_yes);
599 sv_setsv(sv,&PL_sv_undef);
604 /* explicit renamed to avoid C++ conflict -- kja */
606 do_close(GV *gv, bool not_implicit)
613 if (!gv || SvTYPE(gv) != SVt_PVGV) {
615 SETERRNO(EBADF,SS$_IVCHAN);
619 if (!io) { /* never opened */
622 if (ckWARN(WARN_UNOPENED))
623 warner(WARN_UNOPENED,
624 "Close on unopened file <%s>",GvENAME(gv));
625 SETERRNO(EBADF,SS$_IVCHAN);
629 retval = io_close(io);
633 IoLINES_LEFT(io) = IoPAGE_LEN(io);
646 if (IoTYPE(io) == '|') {
647 status = PerlProc_pclose(IoIFP(io));
648 STATUS_NATIVE_SET(status);
649 retval = (STATUS_POSIX == 0);
651 else if (IoTYPE(io) == '-')
654 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
655 retval = (PerlIO_close(IoOFP(io)) != EOF);
656 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
659 retval = (PerlIO_close(IoIFP(io)) != EOF);
661 IoOFP(io) = IoIFP(io) = Nullfp;
664 SETERRNO(EBADF,SS$_IVCHAN);
684 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
685 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
686 return FALSE; /* this is the most usual case */
689 ch = PerlIO_getc(IoIFP(io));
691 (void)PerlIO_ungetc(IoIFP(io),ch);
694 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
695 if (PerlIO_get_cnt(IoIFP(io)) < -1)
696 PerlIO_set_cnt(IoIFP(io),-1);
698 if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
699 if (!nextargv(PL_argvgv)) /* get another fp handy */
703 return TRUE; /* normal fp, definitely end of file */
714 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
715 #ifdef ULTRIX_STDIO_BOTCH
717 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
719 return PerlIO_tell(fp);
723 if (ckWARN(WARN_UNOPENED))
724 warner(WARN_UNOPENED, "tell() on unopened file");
726 SETERRNO(EBADF,RMS$_IFI);
731 do_seek(GV *gv, long int pos, int whence)
736 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
737 #ifdef ULTRIX_STDIO_BOTCH
739 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
741 return PerlIO_seek(fp, pos, whence) >= 0;
745 if (ckWARN(WARN_UNOPENED))
746 warner(WARN_UNOPENED, "seek() on unopened file");
748 SETERRNO(EBADF,RMS$_IFI);
753 do_sysseek(GV *gv, long int pos, int whence)
758 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
759 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
762 if (ckWARN(WARN_UNOPENED))
763 warner(WARN_UNOPENED, "sysseek() on unopened file");
765 SETERRNO(EBADF,RMS$_IFI);
770 do_binmode(PerlIO *fp, int iotype, int flag)
773 croak("panic: unsetting binmode"); /* Not implemented yet */
776 if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN))
781 if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) {
782 #if defined(WIN32) && defined(__BORLANDC__)
783 /* The translation mode of the stream is maintained independent
784 * of the translation mode of the fd in the Borland RTL (heavy
785 * digging through their runtime sources reveal). User has to
786 * set the mode explicitly for the stream (though they don't
787 * document this anywhere). GSAR 97-5-24
789 PerlIO_seek(fp,0L,0);
790 ((FILE*)fp)->flags |= _F_BIN;
798 #if defined(USEMYBINMODE)
799 if (my_binmode(fp,iotype) != NULL)
809 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
810 /* code courtesy of William Kucharski */
813 I32 my_chsize(fd, length)
814 I32 fd; /* file descriptor */
815 Off_t length; /* length to set file to */
820 if (PerlLIO_fstat(fd, &filebuf) < 0)
823 if (filebuf.st_size < length) {
825 /* extend file length */
827 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
830 /* write a "0" byte */
832 if ((PerlLIO_write(fd, "", 1)) != 1)
836 /* truncate length */
841 fl.l_type = F_WRLCK; /* write lock on file space */
844 * This relies on the UNDOCUMENTED F_FREESP argument to
845 * fcntl(2), which truncates the file so that it ends at the
846 * position indicated by fl.l_start.
848 * Will minor miracles never cease?
851 if (fcntl(fd, F_FREESP, &fl) < 0)
858 #endif /* F_FREESP */
861 do_print(register SV *sv, PerlIO *fp)
866 /* assuming fp is checked earlier */
872 if (SvIOK(sv) && SvIVX(sv) != 0) {
873 PerlIO_printf(fp, PL_ofmt, (double)SvIVX(sv));
874 return !PerlIO_error(fp);
876 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
877 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
878 PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
879 return !PerlIO_error(fp);
882 switch (SvTYPE(sv)) {
886 if (ckWARN(WARN_UNINITIALIZED))
887 warner(WARN_UNINITIALIZED, warn_uninit);
894 PerlIO_printf(fp, "%ld", (long)SvIVX(sv));
895 return !PerlIO_error(fp);
899 tmps = SvPV(sv, len);
902 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
904 return !PerlIO_error(fp);
914 if (PL_op->op_flags & OPf_REF) {
916 tmpgv = cGVOP->op_gv;
919 if (io && IoIFP(io)) {
921 sv_setpv(PL_statname,"");
922 PL_laststype = OP_STAT;
923 return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
926 if (tmpgv == PL_defgv)
927 return PL_laststatval;
928 if (ckWARN(WARN_UNOPENED))
929 warner(WARN_UNOPENED, "Stat on unopened file <%s>",
932 sv_setpv(PL_statname,"");
933 return (PL_laststatval = -1);
940 if (SvTYPE(sv) == SVt_PVGV) {
944 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
945 tmpgv = (GV*)SvRV(sv);
951 sv_setpv(PL_statname, s);
952 PL_laststype = OP_STAT;
953 PL_laststatval = PerlLIO_stat(s, &PL_statcache);
954 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
955 warner(WARN_NEWLINE, warn_nl, "stat");
956 return PL_laststatval;
965 if (PL_op->op_flags & OPf_REF) {
967 if (cGVOP->op_gv == PL_defgv) {
968 if (PL_laststype != OP_LSTAT)
969 croak("The stat preceding -l _ wasn't an lstat");
970 return PL_laststatval;
972 croak("You can't use -l on a filehandle");
975 PL_laststype = OP_LSTAT;
979 sv_setpv(PL_statname,SvPV(sv, PL_na));
981 PL_laststatval = PerlLIO_lstat(SvPV(sv, PL_na),&PL_statcache);
983 PL_laststatval = PerlLIO_stat(SvPV(sv, PL_na),&PL_statcache);
985 if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, PL_na), '\n'))
986 warner(WARN_NEWLINE, warn_nl, "lstat");
987 return PL_laststatval;
991 do_aexec(SV *really, register SV **mark, register SV **sp)
998 New(401,PL_Argv, sp - mark + 1, char*);
1000 while (++mark <= sp) {
1002 *a++ = SvPVx(*mark, PL_na);
1007 if (*PL_Argv[0] != '/') /* will execvp use PATH? */
1008 TAINT_ENV(); /* testing IFS here is overkill, probably */
1009 if (really && *(tmps = SvPV(really, PL_na)))
1010 PerlProc_execvp(tmps,PL_Argv);
1012 PerlProc_execvp(PL_Argv[0],PL_Argv);
1013 if (ckWARN(WARN_EXEC))
1014 warner(WARN_EXEC, "Can't exec \"%s\": %s",
1015 PL_Argv[0], Strerror(errno));
1026 PL_Argv = Null(char **);
1034 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP)
1043 while (*cmd && isSPACE(*cmd))
1046 /* save an extra exec if possible */
1049 if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
1051 s = cmd+PL_cshlen+3;
1065 if (s[-1] == '\'') {
1067 PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
1075 /* see if there are shell metacharacters in it */
1077 if (*cmd == '.' && isSPACE(cmd[1]))
1080 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1083 for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
1087 for (s = cmd; *s; s++) {
1088 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1089 if (*s == '\n' && !s[1]) {
1094 PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
1099 New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
1100 PL_Cmd = savepvn(cmd, s-cmd);
1102 for (s = PL_Cmd; *s;) {
1103 while (*s && isSPACE(*s)) s++;
1106 while (*s && !isSPACE(*s)) s++;
1112 PerlProc_execvp(PL_Argv[0],PL_Argv);
1113 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1119 if (ckWARN(WARN_EXEC))
1120 warner(WARN_EXEC, "Can't exec \"%s\": %s",
1121 PL_Argv[0], Strerror(errno));
1128 #endif /* OS2 || WIN32 */
1131 apply(I32 type, register SV **mark, register SV **sp)
1136 register I32 tot = 0;
1139 SV **oldmark = mark;
1141 #define APPLY_TAINT_PROPER() \
1143 if (PL_tainting && PL_tainted) { goto taint_proper_label; } \
1146 /* This is a first heuristic; it doesn't catch tainting magic. */
1148 while (++mark <= sp) {
1149 if (SvTAINTED(*mark)) {
1159 APPLY_TAINT_PROPER();
1162 APPLY_TAINT_PROPER();
1164 while (++mark <= sp) {
1165 char *name = SvPVx(*mark, PL_na);
1166 APPLY_TAINT_PROPER();
1167 if (PerlLIO_chmod(name, val))
1175 APPLY_TAINT_PROPER();
1176 if (sp - mark > 2) {
1177 val = SvIVx(*++mark);
1178 val2 = SvIVx(*++mark);
1179 APPLY_TAINT_PROPER();
1181 while (++mark <= sp) {
1182 char *name = SvPVx(*mark, PL_na);
1183 APPLY_TAINT_PROPER();
1184 if (PerlLIO_chown(name, val, val2))
1191 XXX Should we make lchown() directly available from perl?
1192 For now, we'll let Configure test for HAS_LCHOWN, but do
1193 nothing in the core.
1199 APPLY_TAINT_PROPER();
1202 s = SvPVx(*++mark, PL_na);
1204 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1206 if (!(val = whichsig(s)))
1207 croak("Unrecognized signal name \"%s\"",s);
1211 APPLY_TAINT_PROPER();
1214 /* kill() doesn't do process groups (job trees?) under VMS */
1215 if (val < 0) val = -val;
1216 if (val == SIGKILL) {
1217 # include <starlet.h>
1218 /* Use native sys$delprc() to insure that target process is
1219 * deleted; supervisor-mode images don't pay attention to
1220 * CRTL's emulation of Unix-style signals and kill()
1222 while (++mark <= sp) {
1223 I32 proc = SvIVx(*mark);
1224 register unsigned long int __vmssts;
1225 APPLY_TAINT_PROPER();
1226 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1230 case SS$_NOSUCHNODE:
1231 SETERRNO(ESRCH,__vmssts);
1234 SETERRNO(EPERM,__vmssts);
1237 SETERRNO(EVMSERR,__vmssts);
1246 while (++mark <= sp) {
1247 I32 proc = SvIVx(*mark);
1248 APPLY_TAINT_PROPER();
1250 if (PerlProc_killpg(proc,val)) /* BSD */
1252 if (PerlProc_kill(-proc,val)) /* SYSV */
1258 while (++mark <= sp) {
1259 I32 proc = SvIVx(*mark);
1260 APPLY_TAINT_PROPER();
1261 if (PerlProc_kill(proc, val))
1269 APPLY_TAINT_PROPER();
1271 while (++mark <= sp) {
1272 s = SvPVx(*mark, PL_na);
1273 APPLY_TAINT_PROPER();
1274 if (PL_euid || PL_unsafe) {
1278 else { /* don't let root wipe out directories without -U */
1280 if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1282 if (PerlLIO_stat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
1295 APPLY_TAINT_PROPER();
1296 if (sp - mark > 2) {
1297 #if defined(I_UTIME) || defined(VMS)
1298 struct utimbuf utbuf;
1306 Zero(&utbuf, sizeof utbuf, char);
1308 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1309 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1311 utbuf.actime = SvIVx(*++mark); /* time accessed */
1312 utbuf.modtime = SvIVx(*++mark); /* time modified */
1314 APPLY_TAINT_PROPER();
1316 while (++mark <= sp) {
1317 char *name = SvPVx(*mark, PL_na);
1318 APPLY_TAINT_PROPER();
1319 if (PerlLIO_utime(name, &utbuf))
1332 return 0; /* this should never happen */
1334 #undef APPLY_TAINT_PROPER
1337 /* Do the permissions allow some operation? Assumes statcache already set. */
1338 #ifndef VMS /* VMS' cando is in vms.c */
1340 cando(I32 bit, I32 effective, register struct stat *statbufp)
1343 /* [Comments and code from Len Reed]
1344 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1345 * to write-protected files. The execute permission bit is set
1346 * by the Miscrosoft C library stat() function for the following:
1351 * All files and directories are readable.
1352 * Directories and special files, e.g. "CON", cannot be
1354 * [Comment by Tom Dinger -- a directory can have the write-protect
1355 * bit set in the file system, but DOS permits changes to
1356 * the directory anyway. In addition, all bets are off
1357 * here for networked software, such as Novell and
1361 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1362 * too so it will actually look into the files for magic numbers
1364 return (bit & statbufp->st_mode) ? TRUE : FALSE;
1366 #else /* ! DOSISH */
1367 if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
1368 if (bit == S_IXUSR) {
1369 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1373 return TRUE; /* root reads and writes anything */
1376 if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
1377 if (statbufp->st_mode & bit)
1378 return TRUE; /* ok as "user" */
1380 else if (ingroup((I32)statbufp->st_gid,effective)) {
1381 if (statbufp->st_mode & bit >> 3)
1382 return TRUE; /* ok as "group" */
1384 else if (statbufp->st_mode & bit >> 6)
1385 return TRUE; /* ok as "other" */
1387 #endif /* ! DOSISH */
1392 ingroup(I32 testgid, I32 effective)
1394 if (testgid == (effective ? PL_egid : PL_gid))
1396 #ifdef HAS_GETGROUPS
1401 Groups_t gary[NGROUPS];
1404 anum = getgroups(NGROUPS,gary);
1406 if (gary[anum] == testgid)
1413 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1416 do_ipcget(I32 optype, SV **mark, SV **sp)
1422 key = (key_t)SvNVx(*++mark);
1423 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1424 flags = SvIVx(*++mark);
1430 return msgget(key, flags);
1434 return semget(key, n, flags);
1438 return shmget(key, n, flags);
1440 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1442 croak("%s not implemented", op_desc[optype]);
1445 return -1; /* should never happen */
1449 do_ipcctl(I32 optype, SV **mark, SV **sp)
1454 I32 id, n, cmd, infosize, getinfo;
1457 id = SvIVx(*++mark);
1458 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1459 cmd = SvIVx(*++mark);
1462 getinfo = (cmd == IPC_STAT);
1468 if (cmd == IPC_STAT || cmd == IPC_SET)
1469 infosize = sizeof(struct msqid_ds);
1474 if (cmd == IPC_STAT || cmd == IPC_SET)
1475 infosize = sizeof(struct shmid_ds);
1480 if (cmd == IPC_STAT || cmd == IPC_SET)
1481 infosize = sizeof(struct semid_ds);
1482 else if (cmd == GETALL || cmd == SETALL)
1484 struct semid_ds semds;
1488 getinfo = (cmd == GETALL);
1489 if (Semctl(id, 0, IPC_STAT, semun) == -1)
1491 infosize = semds.sem_nsems * sizeof(short);
1492 /* "short" is technically wrong but much more portable
1493 than guessing about u_?short(_t)? */
1497 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1499 croak("%s not implemented", op_desc[optype]);
1508 SvPV_force(astr, len);
1509 a = SvGROW(astr, infosize+1);
1513 a = SvPV(astr, len);
1514 if (len != infosize)
1515 croak("Bad arg length for %s, is %lu, should be %ld",
1516 op_desc[optype], (unsigned long)len, (long)infosize);
1522 a = (char *)i; /* ouch */
1529 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1534 union semun unsemds;
1536 unsemds.buf = (struct semid_ds *)a;
1537 ret = Semctl(id, n, cmd, unsemds);
1543 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1547 if (getinfo && ret >= 0) {
1548 SvCUR_set(astr, infosize);
1549 *SvEND(astr) = '\0';
1556 do_msgsnd(SV **mark, SV **sp)
1562 I32 id, msize, flags;
1565 id = SvIVx(*++mark);
1567 flags = SvIVx(*++mark);
1568 mbuf = SvPV(mstr, len);
1569 if ((msize = len - sizeof(long)) < 0)
1570 croak("Arg too short for msgsnd");
1572 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1574 croak("msgsnd not implemented");
1579 do_msgrcv(SV **mark, SV **sp)
1586 I32 id, msize, flags, ret;
1589 id = SvIVx(*++mark);
1591 msize = SvIVx(*++mark);
1592 mtype = (long)SvIVx(*++mark);
1593 flags = SvIVx(*++mark);
1594 if (SvTHINKFIRST(mstr)) {
1595 if (SvREADONLY(mstr))
1596 croak("Can't msgrcv to readonly var");
1600 SvPV_force(mstr, len);
1601 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1604 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1606 SvCUR_set(mstr, sizeof(long)+ret);
1607 *SvEND(mstr) = '\0';
1611 croak("msgrcv not implemented");
1616 do_semop(SV **mark, SV **sp)
1625 id = SvIVx(*++mark);
1627 opbuf = SvPV(opstr, opsize);
1628 if (opsize < sizeof(struct sembuf)
1629 || (opsize % sizeof(struct sembuf)) != 0) {
1630 SETERRNO(EINVAL,LIB$_INVARG);
1634 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1636 croak("semop not implemented");
1641 do_shmio(I32 optype, SV **mark, SV **sp)
1647 I32 id, mpos, msize;
1649 struct shmid_ds shmds;
1651 id = SvIVx(*++mark);
1653 mpos = SvIVx(*++mark);
1654 msize = SvIVx(*++mark);
1656 if (shmctl(id, IPC_STAT, &shmds) == -1)
1658 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1659 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1662 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1663 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1665 if (optype == OP_SHMREAD) {
1666 SvPV_force(mstr, len);
1667 mbuf = SvGROW(mstr, msize+1);
1669 Copy(shm + mpos, mbuf, msize, char);
1670 SvCUR_set(mstr, msize);
1671 *SvEND(mstr) = '\0';
1677 mbuf = SvPV(mstr, len);
1678 if ((n = len) > msize)
1680 Copy(mbuf, shm + mpos, n, char);
1682 memzero(shm + mpos + n, msize - n);
1686 croak("shm I/O not implemented");
1690 #endif /* SYSV IPC */