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 forkprocess = 1; /* assume true if no fork */
100 fd = PerlIO_fileno(IoIFP(io));
101 if (IoTYPE(io) == '-')
103 else if (fd <= 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 > maxsysfd)
122 PerlIO_printf(PerlIO_stderr(), "Warning: unable to close filehandle %s properly.\n",
124 IoOFP(io) = IoIFP(io) = Nullfp;
128 result = rawmode & 3;
129 IoTYPE(io) = "<>++"[result];
130 writing = (result > 0);
131 fd = PerlLIO_open3(name, rawmode, rawperm);
139 else if (rawmode & O_APPEND)
140 fpmode = (result == 1) ? "a" : "a+";
143 fpmode = (result == 1) ? "w" : "r+";
144 fp = PerlIO_fdopen(fd, fpmode);
151 char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
154 myname = savepvn(name, len);
157 while (len && isSPACE(name[len-1]))
160 mode[0] = mode[1] = mode[2] = '\0';
162 if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */
170 for (name++; isSPACE(*name); name++) ;
173 TAINT_PROPER("piped open");
174 if (name[strlen(name)-1] == '|') {
175 name[strlen(name)-1] = '\0' ;
177 warn("Can't do bidirectional pipe");
179 fp = PerlProc_popen(name,"w");
182 else if (*name == '>') {
183 TAINT_PROPER("open");
186 mode[0] = IoTYPE(io) = 'a';
201 if (!*name && supplied_fp)
205 for (; isSPACE(*name); name++) ;
210 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
214 SETERRNO(EINVAL,SS$_IVCHAN);
219 fd = PerlIO_fileno(IoIFP(thatio));
220 if (IoTYPE(thatio) == 's')
227 fd = PerlLIO_dup(fd);
230 if (!(fp = PerlIO_fdopen(fd,mode))) {
238 for (; isSPACE(*name); name++) ;
239 if (strEQ(name,"-")) {
240 fp = PerlIO_stdout();
244 fp = PerlIO_open(name,mode);
248 else if (*name == '<') {
250 for (name++; isSPACE(*name); name++) ;
254 if (strEQ(name,"-")) {
259 fp = PerlIO_open(name,mode);
261 else if (name[len-1] == '|') {
263 while (len && isSPACE(name[len-1]))
266 for (; isSPACE(*name); name++) ;
269 TAINT_PROPER("piped open");
270 fp = PerlProc_popen(name,"r");
276 for (; isSPACE(*name); name++) ;
277 if (strEQ(name,"-")) {
282 fp = PerlIO_open(name,"r");
286 if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n'))
287 warn(warn_nl, "open");
291 IoTYPE(io) != '|' && IoTYPE(io) != '-') {
293 if (PerlLIO_fstat(PerlIO_fileno(fp),&statbuf) < 0) {
294 (void)PerlIO_close(fp);
297 if (S_ISSOCK(statbuf.st_mode))
298 IoTYPE(io) = 's'; /* in case a socket was passed in to us */
302 !(statbuf.st_mode & S_IFMT)
308 Sock_size_t buflen = sizeof tmpbuf;
309 if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
311 || errno != ENOTSOCK)
312 IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
313 /* but some return 0 for streams too, sigh */
317 if (saveifp) { /* must use old fp? */
318 fd = PerlIO_fileno(saveifp);
320 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
321 if (saveofp != saveifp) { /* was a socket? */
322 PerlIO_close(saveofp);
327 if (fd != PerlIO_fileno(fp)) {
331 PerlLIO_dup2(PerlIO_fileno(fp), fd);
332 sv = *av_fetch(fdpid,PerlIO_fileno(fp),TRUE);
333 (void)SvUPGRADE(sv, SVt_IV);
336 sv = *av_fetch(fdpid,fd,TRUE);
337 (void)SvUPGRADE(sv, SVt_IV);
346 #if defined(HAS_FCNTL) && defined(F_SETFD)
347 fd = PerlIO_fileno(fp);
348 fcntl(fd,F_SETFD,fd > maxsysfd);
353 if (IoTYPE(io) == 's'
354 || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) {
355 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
369 IoTYPE(io) = savetype;
374 nextargv(register GV *gv)
377 #ifndef FLEXFILENAMES
385 argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
386 if (filemode & (S_ISUID|S_ISGID)) {
387 PerlIO_flush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */
389 (void)fchmod(lastfd,filemode);
391 (void)PerlLIO_chmod(oldname,filemode);
395 while (av_len(GvAV(gv)) >= 0) {
398 sv = av_shift(GvAV(gv));
400 sv_setsv(GvSV(gv),sv);
401 SvSETMAGIC(GvSV(gv));
402 oldname = SvPVx(GvSV(gv), oldlen);
403 if (do_open(gv,oldname,oldlen,inplace!=0,0,0,Nullfp)) {
405 TAINT_PROPER("inplace open");
406 if (oldlen == 1 && *oldname == '-') {
407 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
408 return IoIFP(GvIOp(gv));
410 #ifndef FLEXFILENAMES
411 filedev = statbuf.st_dev;
412 fileino = statbuf.st_ino;
414 filemode = statbuf.st_mode;
415 fileuid = statbuf.st_uid;
416 filegid = statbuf.st_gid;
417 if (!S_ISREG(filemode)) {
418 warn("Can't do inplace edit: %s is not a regular file",
425 add_suffix(sv,inplace);
427 sv_catpv(sv,inplace);
429 #ifndef FLEXFILENAMES
430 if (PerlLIO_stat(SvPVX(sv),&statbuf) >= 0
431 && statbuf.st_dev == filedev
432 && statbuf.st_ino == fileino
434 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
437 warn("Can't do inplace edit: %s would not be uniq",
445 if (PerlLIO_rename(oldname,SvPVX(sv)) < 0) {
446 warn("Can't rename %s to %s: %s, skipping file",
447 oldname, SvPVX(sv), Strerror(errno) );
453 (void)PerlLIO_unlink(SvPVX(sv));
454 (void)PerlLIO_rename(oldname,SvPVX(sv));
455 do_open(gv,SvPVX(sv),SvCUR(sv),inplace!=0,0,0,Nullfp);
458 (void)UNLINK(SvPVX(sv));
459 if (link(oldname,SvPVX(sv)) < 0) {
460 warn("Can't rename %s to %s: %s, skipping file",
461 oldname, SvPVX(sv), Strerror(errno) );
465 (void)UNLINK(oldname);
469 #if !defined(DOSISH) && !defined(AMIGAOS)
470 # ifndef VMS /* Don't delete; use automatic file versioning */
471 if (UNLINK(oldname) < 0) {
472 warn("Can't remove %s: %s, skipping file",
473 oldname, Strerror(errno) );
479 croak("Can't do inplace edit without backup");
483 sv_setpvn(sv,">",!inplace);
484 sv_catpvn(sv,oldname,oldlen);
485 SETERRNO(0,0); /* in case sprintf set errno */
486 if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),inplace!=0,
487 O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp)) {
488 warn("Can't do inplace edit on %s: %s",
489 oldname, Strerror(errno) );
493 setdefout(argvoutgv);
494 lastfd = PerlIO_fileno(IoIFP(GvIOp(argvoutgv)));
495 (void)PerlLIO_fstat(lastfd,&statbuf);
497 (void)fchmod(lastfd,filemode);
499 # if !(defined(WIN32) && defined(__BORLANDC__))
500 /* Borland runtime creates a readonly file! */
501 (void)PerlLIO_chmod(oldname,filemode);
504 if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) {
506 (void)fchown(lastfd,fileuid,filegid);
509 (void)chown(oldname,fileuid,filegid);
514 return IoIFP(GvIOp(gv));
517 PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",
518 SvPV(sv, na), Strerror(errno));
521 (void)do_close(argvoutgv,FALSE);
522 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
529 do_pipe(SV *sv, GV *rgv, GV *wgv)
548 if (PerlProc_pipe(fd) < 0)
550 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
551 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
552 IoIFP(wstio) = IoOFP(wstio);
555 if (!IoIFP(rstio) || !IoOFP(wstio)) {
556 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
557 else PerlLIO_close(fd[0]);
558 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
559 else PerlLIO_close(fd[1]);
563 sv_setsv(sv,&sv_yes);
567 sv_setsv(sv,&sv_undef);
572 /* explicit renamed to avoid C++ conflict -- kja */
574 do_close(GV *gv, bool not_implicit)
581 if (!gv || SvTYPE(gv) != SVt_PVGV) {
582 SETERRNO(EBADF,SS$_IVCHAN);
586 if (!io) { /* never opened */
587 if (dowarn && not_implicit)
588 warn("Close on unopened file <%s>",GvENAME(gv));
589 SETERRNO(EBADF,SS$_IVCHAN);
592 retval = io_close(io);
596 IoLINES_LEFT(io) = IoPAGE_LEN(io);
609 if (IoTYPE(io) == '|') {
610 status = PerlProc_pclose(IoIFP(io));
611 STATUS_NATIVE_SET(status);
612 retval = (STATUS_POSIX == 0);
614 else if (IoTYPE(io) == '-')
617 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
618 retval = (PerlIO_close(IoOFP(io)) != EOF);
619 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
622 retval = (PerlIO_close(IoIFP(io)) != EOF);
624 IoOFP(io) = IoIFP(io) = Nullfp;
627 SETERRNO(EBADF,SS$_IVCHAN);
647 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
648 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
649 return FALSE; /* this is the most usual case */
652 ch = PerlIO_getc(IoIFP(io));
654 (void)PerlIO_ungetc(IoIFP(io),ch);
657 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
658 if (PerlIO_get_cnt(IoIFP(io)) < -1)
659 PerlIO_set_cnt(IoIFP(io),-1);
661 if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
662 if (!nextargv(argvgv)) /* get another fp handy */
666 return TRUE; /* normal fp, definitely end of file */
677 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
678 #ifdef ULTRIX_STDIO_BOTCH
680 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
682 return PerlIO_tell(fp);
685 warn("tell() on unopened file");
686 SETERRNO(EBADF,RMS$_IFI);
691 do_seek(GV *gv, long int pos, int whence)
696 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
697 #ifdef ULTRIX_STDIO_BOTCH
699 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
701 return PerlIO_seek(fp, pos, whence) >= 0;
704 warn("seek() on unopened file");
705 SETERRNO(EBADF,RMS$_IFI);
710 do_sysseek(GV *gv, long int pos, int whence)
715 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
716 return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
718 warn("sysseek() on unopened file");
719 SETERRNO(EBADF,RMS$_IFI);
724 do_binmode(PerlIO *fp, int iotype, int flag)
727 croak("panic: unsetting binmode"); /* Not implemented yet */
730 if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN))
735 if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) {
736 #if defined(WIN32) && defined(__BORLANDC__)
737 /* The translation mode of the stream is maintained independent
738 * of the translation mode of the fd in the Borland RTL (heavy
739 * digging through their runtime sources reveal). User has to
740 * set the mode explicitly for the stream (though they don't
741 * document this anywhere). GSAR 97-5-24
743 PerlIO_seek(fp,0L,0);
752 #if defined(USEMYBINMODE)
753 if (my_binmode(fp,iotype) != NULL)
763 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
764 /* code courtesy of William Kucharski */
767 I32 my_chsize(fd, length)
768 I32 fd; /* file descriptor */
769 Off_t length; /* length to set file to */
774 if (PerlLIO_fstat(fd, &filebuf) < 0)
777 if (filebuf.st_size < length) {
779 /* extend file length */
781 if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
784 /* write a "0" byte */
786 if ((PerlLIO_write(fd, "", 1)) != 1)
790 /* truncate length */
795 fl.l_type = F_WRLCK; /* write lock on file space */
798 * This relies on the UNDOCUMENTED F_FREESP argument to
799 * fcntl(2), which truncates the file so that it ends at the
800 * position indicated by fl.l_start.
802 * Will minor miracles never cease?
805 if (fcntl(fd, F_FREESP, &fl) < 0)
812 #endif /* F_FREESP */
815 do_print(register SV *sv, PerlIO *fp)
820 /* assuming fp is checked earlier */
826 if (SvIOK(sv) && SvIVX(sv) != 0) {
827 PerlIO_printf(fp, ofmt, (double)SvIVX(sv));
828 return !PerlIO_error(fp);
830 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
831 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
832 PerlIO_printf(fp, ofmt, SvNVX(sv));
833 return !PerlIO_error(fp);
836 switch (SvTYPE(sv)) {
845 PerlIO_printf(fp, "%ld", (long)SvIVX(sv));
846 return !PerlIO_error(fp);
850 tmps = SvPV(sv, len);
853 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
855 return !PerlIO_error(fp);
865 if (op->op_flags & OPf_REF) {
867 tmpgv = cGVOP->op_gv;
870 if (io && IoIFP(io)) {
872 sv_setpv(statname,"");
874 return (laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &statcache));
880 warn("Stat on unopened file <%s>",
883 sv_setpv(statname,"");
884 return (laststatval = -1);
891 if (SvTYPE(sv) == SVt_PVGV) {
895 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
896 tmpgv = (GV*)SvRV(sv);
902 sv_setpv(statname, s);
904 laststatval = PerlLIO_stat(s, &statcache);
905 if (laststatval < 0 && dowarn && strchr(s, '\n'))
906 warn(warn_nl, "stat");
916 if (op->op_flags & OPf_REF) {
918 if (cGVOP->op_gv == defgv) {
919 if (laststype != OP_LSTAT)
920 croak("The stat preceding -l _ wasn't an lstat");
923 croak("You can't use -l on a filehandle");
926 laststype = OP_LSTAT;
930 sv_setpv(statname,SvPV(sv, na));
932 laststatval = PerlLIO_lstat(SvPV(sv, na),&statcache);
934 laststatval = PerlLIO_stat(SvPV(sv, na),&statcache);
936 if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n'))
937 warn(warn_nl, "lstat");
942 do_aexec(SV *really, register SV **mark, register SV **sp)
949 New(401,Argv, sp - mark + 1, char*);
951 while (++mark <= sp) {
953 *a++ = SvPVx(*mark, na);
958 if (*Argv[0] != '/') /* will execvp use PATH? */
959 TAINT_ENV(); /* testing IFS here is overkill, probably */
960 if (really && *(tmps = SvPV(really, na)))
961 PerlProc_execvp(tmps,Argv);
963 PerlProc_execvp(Argv[0],Argv);
965 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
976 Argv = Null(char **);
984 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP)
993 while (*cmd && isSPACE(*cmd))
996 /* save an extra exec if possible */
999 if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) {
1015 if (s[-1] == '\'') {
1017 PerlProc_execl(cshname,"csh", flags,ncmd,(char*)0);
1025 /* see if there are shell metacharacters in it */
1027 if (*cmd == '.' && isSPACE(cmd[1]))
1030 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1033 for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
1037 for (s = cmd; *s; s++) {
1038 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1039 if (*s == '\n' && !s[1]) {
1044 PerlProc_execl(sh_path, "sh", "-c", cmd, (char*)0);
1049 New(402,Argv, (s - cmd) / 2 + 2, char*);
1050 Cmd = savepvn(cmd, s-cmd);
1052 for (s = Cmd; *s;) {
1053 while (*s && isSPACE(*s)) s++;
1056 while (*s && !isSPACE(*s)) s++;
1062 PerlProc_execvp(Argv[0],Argv);
1063 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1068 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
1074 #endif /* OS2 || WIN32 */
1077 apply(I32 type, register SV **mark, register SV **sp)
1082 register I32 tot = 0;
1085 SV **oldmark = mark;
1087 #define APPLY_TAINT_PROPER() \
1088 if (!(tainting && tainted)) {} else { goto taint_proper; }
1090 /* This is a first heuristic; it doesn't catch tainting magic. */
1092 while (++mark <= sp) {
1093 if (SvTAINTED(*mark)) {
1103 APPLY_TAINT_PROPER();
1106 APPLY_TAINT_PROPER();
1108 while (++mark <= sp) {
1109 char *name = SvPVx(*mark, na);
1110 APPLY_TAINT_PROPER();
1111 if (PerlLIO_chmod(name, val))
1119 APPLY_TAINT_PROPER();
1120 if (sp - mark > 2) {
1121 val = SvIVx(*++mark);
1122 val2 = SvIVx(*++mark);
1123 APPLY_TAINT_PROPER();
1125 while (++mark <= sp) {
1126 char *name = SvPVx(*mark, na);
1127 APPLY_TAINT_PROPER();
1128 if (chown(name, val, val2))
1135 XXX Should we make lchown() directly available from perl?
1136 For now, we'll let Configure test for HAS_LCHOWN, but do
1137 nothing in the core.
1143 APPLY_TAINT_PROPER();
1146 s = SvPVx(*++mark, na);
1148 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1150 if (!(val = whichsig(s)))
1151 croak("Unrecognized signal name \"%s\"",s);
1155 APPLY_TAINT_PROPER();
1158 /* kill() doesn't do process groups (job trees?) under VMS */
1159 if (val < 0) val = -val;
1160 if (val == SIGKILL) {
1161 # include <starlet.h>
1162 /* Use native sys$delprc() to insure that target process is
1163 * deleted; supervisor-mode images don't pay attention to
1164 * CRTL's emulation of Unix-style signals and kill()
1166 while (++mark <= sp) {
1167 I32 proc = SvIVx(*mark);
1168 register unsigned long int __vmssts;
1169 APPLY_TAINT_PROPER();
1170 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1174 case SS$_NOSUCHNODE:
1175 SETERRNO(ESRCH,__vmssts);
1178 SETERRNO(EPERM,__vmssts);
1181 SETERRNO(EVMSERR,__vmssts);
1190 while (++mark <= sp) {
1191 I32 proc = SvIVx(*mark);
1192 APPLY_TAINT_PROPER();
1194 if (PerlProc_killpg(proc,val)) /* BSD */
1196 if (PerlProc_kill(-proc,val)) /* SYSV */
1202 while (++mark <= sp) {
1203 I32 proc = SvIVx(*mark);
1204 APPLY_TAINT_PROPER();
1205 if (PerlProc_kill(proc, val))
1213 APPLY_TAINT_PROPER();
1215 while (++mark <= sp) {
1216 s = SvPVx(*mark, na);
1217 APPLY_TAINT_PROPER();
1218 if (euid || unsafe) {
1222 else { /* don't let root wipe out directories without -U */
1224 if (PerlLIO_lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1226 if (PerlLIO_stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1239 APPLY_TAINT_PROPER();
1240 if (sp - mark > 2) {
1241 #if defined(I_UTIME) || defined(VMS)
1242 struct utimbuf utbuf;
1250 Zero(&utbuf, sizeof utbuf, char);
1252 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1253 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1255 utbuf.actime = SvIVx(*++mark); /* time accessed */
1256 utbuf.modtime = SvIVx(*++mark); /* time modified */
1258 APPLY_TAINT_PROPER();
1260 while (++mark <= sp) {
1261 char *name = SvPVx(*mark, na);
1262 APPLY_TAINT_PROPER();
1263 if (PerlLIO_utime(name, &utbuf))
1276 return 0; /* this should never happen */
1278 #undef APPLY_TAINT_PROPER
1281 /* Do the permissions allow some operation? Assumes statcache already set. */
1282 #ifndef VMS /* VMS' cando is in vms.c */
1284 cando(I32 bit, I32 effective, register struct stat *statbufp)
1287 /* [Comments and code from Len Reed]
1288 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1289 * to write-protected files. The execute permission bit is set
1290 * by the Miscrosoft C library stat() function for the following:
1295 * All files and directories are readable.
1296 * Directories and special files, e.g. "CON", cannot be
1298 * [Comment by Tom Dinger -- a directory can have the write-protect
1299 * bit set in the file system, but DOS permits changes to
1300 * the directory anyway. In addition, all bets are off
1301 * here for networked software, such as Novell and
1305 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1306 * too so it will actually look into the files for magic numbers
1308 return (bit & statbufp->st_mode) ? TRUE : FALSE;
1310 #else /* ! DOSISH */
1311 if ((effective ? euid : uid) == 0) { /* root is special */
1312 if (bit == S_IXUSR) {
1313 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1317 return TRUE; /* root reads and writes anything */
1320 if (statbufp->st_uid == (effective ? euid : uid) ) {
1321 if (statbufp->st_mode & bit)
1322 return TRUE; /* ok as "user" */
1324 else if (ingroup((I32)statbufp->st_gid,effective)) {
1325 if (statbufp->st_mode & bit >> 3)
1326 return TRUE; /* ok as "group" */
1328 else if (statbufp->st_mode & bit >> 6)
1329 return TRUE; /* ok as "other" */
1331 #endif /* ! DOSISH */
1336 ingroup(I32 testgid, I32 effective)
1338 if (testgid == (effective ? egid : gid))
1340 #ifdef HAS_GETGROUPS
1345 Groups_t gary[NGROUPS];
1348 anum = getgroups(NGROUPS,gary);
1350 if (gary[anum] == testgid)
1357 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1360 do_ipcget(I32 optype, SV **mark, SV **sp)
1366 key = (key_t)SvNVx(*++mark);
1367 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1368 flags = SvIVx(*++mark);
1374 return msgget(key, flags);
1378 return semget(key, n, flags);
1382 return shmget(key, n, flags);
1384 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1386 croak("%s not implemented", op_desc[optype]);
1389 return -1; /* should never happen */
1393 do_ipcctl(I32 optype, SV **mark, SV **sp)
1398 I32 id, n, cmd, infosize, getinfo;
1401 id = SvIVx(*++mark);
1402 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1403 cmd = SvIVx(*++mark);
1406 getinfo = (cmd == IPC_STAT);
1412 if (cmd == IPC_STAT || cmd == IPC_SET)
1413 infosize = sizeof(struct msqid_ds);
1418 if (cmd == IPC_STAT || cmd == IPC_SET)
1419 infosize = sizeof(struct shmid_ds);
1424 if (cmd == IPC_STAT || cmd == IPC_SET)
1425 infosize = sizeof(struct semid_ds);
1426 else if (cmd == GETALL || cmd == SETALL)
1428 struct semid_ds semds;
1432 getinfo = (cmd == GETALL);
1433 infosize = semds.sem_nsems * sizeof(short);
1434 /* "short" is technically wrong but much more portable
1435 than guessing about u_?short(_t)? */
1439 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1441 croak("%s not implemented", op_desc[optype]);
1450 SvPV_force(astr, len);
1451 a = SvGROW(astr, infosize+1);
1455 a = SvPV(astr, len);
1456 if (len != infosize)
1457 croak("Bad arg length for %s, is %lu, should be %ld",
1458 op_desc[optype], (unsigned long)len, (long)infosize);
1464 a = (char *)i; /* ouch */
1471 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1476 union semun unsemds;
1478 unsemds.buf = (struct semid_ds *)a;
1479 ret = Semctl(id, n, cmd, unsemds);
1485 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1489 if (getinfo && ret >= 0) {
1490 SvCUR_set(astr, infosize);
1491 *SvEND(astr) = '\0';
1498 do_msgsnd(SV **mark, SV **sp)
1504 I32 id, msize, flags;
1507 id = SvIVx(*++mark);
1509 flags = SvIVx(*++mark);
1510 mbuf = SvPV(mstr, len);
1511 if ((msize = len - sizeof(long)) < 0)
1512 croak("Arg too short for msgsnd");
1514 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1516 croak("msgsnd not implemented");
1521 do_msgrcv(SV **mark, SV **sp)
1528 I32 id, msize, flags, ret;
1531 id = SvIVx(*++mark);
1533 msize = SvIVx(*++mark);
1534 mtype = (long)SvIVx(*++mark);
1535 flags = SvIVx(*++mark);
1536 if (SvTHINKFIRST(mstr)) {
1537 if (SvREADONLY(mstr))
1538 croak("Can't msgrcv to readonly var");
1542 SvPV_force(mstr, len);
1543 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1546 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1548 SvCUR_set(mstr, sizeof(long)+ret);
1549 *SvEND(mstr) = '\0';
1553 croak("msgrcv not implemented");
1558 do_semop(SV **mark, SV **sp)
1567 id = SvIVx(*++mark);
1569 opbuf = SvPV(opstr, opsize);
1570 if (opsize < sizeof(struct sembuf)
1571 || (opsize % sizeof(struct sembuf)) != 0) {
1572 SETERRNO(EINVAL,LIB$_INVARG);
1576 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1578 croak("semop not implemented");
1583 do_shmio(I32 optype, SV **mark, SV **sp)
1589 I32 id, mpos, msize;
1591 struct shmid_ds shmds;
1593 id = SvIVx(*++mark);
1595 mpos = SvIVx(*++mark);
1596 msize = SvIVx(*++mark);
1598 if (shmctl(id, IPC_STAT, &shmds) == -1)
1600 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1601 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1604 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1605 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1607 if (optype == OP_SHMREAD) {
1608 SvPV_force(mstr, len);
1609 mbuf = SvGROW(mstr, msize+1);
1611 Copy(shm + mpos, mbuf, msize, char);
1612 SvCUR_set(mstr, msize);
1613 *SvEND(mstr) = '\0';
1619 mbuf = SvPV(mstr, len);
1620 if ((n = len) > msize)
1622 Copy(mbuf, shm + mpos, n, char);
1624 memzero(shm + mpos + n, msize - n);
1628 croak("shm I/O not implemented");
1632 #endif /* SYSV IPC */