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));
38 # include <sys/utime.h>
50 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
54 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
59 #if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */
60 # include <sys/socket.h>
64 # include <net/errno.h>
69 /* Put this after #includes because <unistd.h> defines _XOPEN_*. */
71 # if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__)
72 # define Sock_size_t Size_t
74 # define Sock_size_t int
79 do_open(gv,name,len,as_raw,rawmode,rawperm,supplied_fp)
87 register IO *io = GvIOn(gv);
88 PerlIO *saveifp = Nullfp;
89 PerlIO *saveofp = Nullfp;
96 forkprocess = 1; /* assume true if no fork */
99 fd = PerlIO_fileno(IoIFP(io));
100 if (IoTYPE(io) == '-')
102 else if (fd <= maxsysfd) {
105 savetype = IoTYPE(io);
108 else if (IoTYPE(io) == '|')
109 result = my_pclose(IoIFP(io));
110 else if (IoIFP(io) != IoOFP(io)) {
112 result = PerlIO_close(IoOFP(io));
113 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
116 result = PerlIO_close(IoIFP(io));
119 result = PerlIO_close(IoIFP(io));
120 if (result == EOF && fd > maxsysfd)
121 PerlIO_printf(PerlIO_stderr(), "Warning: unable to close filehandle %s properly.\n",
123 IoOFP(io) = IoIFP(io) = Nullfp;
127 result = rawmode & 3;
128 IoTYPE(io) = "<>++"[result];
129 writing = (result > 0);
130 fd = open(name, rawmode, rawperm);
138 else if (rawmode & O_APPEND)
139 fpmode = (result == 1) ? "a" : "a+";
142 fpmode = (result == 1) ? "w" : "r+";
143 fp = PerlIO_fdopen(fd, fpmode);
150 char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
153 myname = savepvn(name, len);
156 while (len && isSPACE(name[len-1]))
159 mode[0] = mode[1] = mode[2] = '\0';
161 if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */
169 for (name++; isSPACE(*name); name++) ;
172 TAINT_PROPER("piped open");
173 if (dowarn && name[strlen(name)-1] == '|')
174 warn("Can't do bidirectional pipe");
175 fp = my_popen(name,"w");
178 else if (*name == '>') {
179 TAINT_PROPER("open");
182 mode[0] = IoTYPE(io) = 'a';
197 if (!*name && supplied_fp)
201 for (; isSPACE(*name); name++) ;
206 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
210 SETERRNO(EINVAL,SS$_IVCHAN);
215 fd = PerlIO_fileno(IoIFP(thatio));
216 if (IoTYPE(thatio) == 's')
224 if (!(fp = PerlIO_fdopen(fd,mode))) {
232 for (; isSPACE(*name); name++) ;
233 if (strEQ(name,"-")) {
234 fp = PerlIO_stdout();
238 fp = PerlIO_open(name,mode);
242 else if (*name == '<') {
244 for (name++; isSPACE(*name); name++) ;
248 if (strEQ(name,"-")) {
253 fp = PerlIO_open(name,mode);
255 else if (name[len-1] == '|') {
257 while (len && isSPACE(name[len-1]))
260 for (; isSPACE(*name); name++) ;
263 TAINT_PROPER("piped open");
264 fp = my_popen(name,"r");
270 for (; isSPACE(*name); name++) ;
271 if (strEQ(name,"-")) {
276 fp = PerlIO_open(name,"r");
280 if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n'))
281 warn(warn_nl, "open");
285 IoTYPE(io) != '|' && IoTYPE(io) != '-') {
286 if (Fstat(PerlIO_fileno(fp),&statbuf) < 0) {
287 (void)PerlIO_close(fp);
290 if (S_ISSOCK(statbuf.st_mode))
291 IoTYPE(io) = 's'; /* in case a socket was passed in to us */
295 !(statbuf.st_mode & S_IFMT)
300 Sock_size_t buflen = sizeof tokenbuf;
301 if (getsockname(PerlIO_fileno(fp), (struct sockaddr *)tokenbuf,
303 || errno != ENOTSOCK)
304 IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
305 /* but some return 0 for streams too, sigh */
309 if (saveifp) { /* must use old fp? */
310 fd = PerlIO_fileno(saveifp);
312 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
313 if (saveofp != saveifp) { /* was a socket? */
314 PerlIO_close(saveofp);
319 if (fd != PerlIO_fileno(fp)) {
323 dup2(PerlIO_fileno(fp), fd);
324 sv = *av_fetch(fdpid,PerlIO_fileno(fp),TRUE);
325 (void)SvUPGRADE(sv, SVt_IV);
328 sv = *av_fetch(fdpid,fd,TRUE);
329 (void)SvUPGRADE(sv, SVt_IV);
337 #if defined(HAS_FCNTL) && defined(F_SETFD)
338 fd = PerlIO_fileno(fp);
339 fcntl(fd,F_SETFD,fd > maxsysfd);
343 if (IoTYPE(io) == 's'
344 || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) {
345 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
359 IoTYPE(io) = savetype;
368 #ifndef FLEXFILENAMES
376 argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
377 if (filemode & (S_ISUID|S_ISGID)) {
378 PerlIO_flush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */
380 (void)fchmod(lastfd,filemode);
382 (void)chmod(oldname,filemode);
386 while (av_len(GvAV(gv)) >= 0) {
389 sv = av_shift(GvAV(gv));
391 sv_setsv(GvSV(gv),sv);
392 SvSETMAGIC(GvSV(gv));
393 oldname = SvPVx(GvSV(gv), len);
394 if (do_open(gv,oldname,len,FALSE,0,0,Nullfp)) {
396 TAINT_PROPER("inplace open");
397 if (strEQ(oldname,"-")) {
398 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
399 return IoIFP(GvIOp(gv));
401 #ifndef FLEXFILENAMES
402 filedev = statbuf.st_dev;
403 fileino = statbuf.st_ino;
405 filemode = statbuf.st_mode;
406 fileuid = statbuf.st_uid;
407 filegid = statbuf.st_gid;
408 if (!S_ISREG(filemode)) {
409 warn("Can't do inplace edit: %s is not a regular file",
416 add_suffix(sv,inplace);
418 sv_catpv(sv,inplace);
420 #ifndef FLEXFILENAMES
421 if (Stat(SvPVX(sv),&statbuf) >= 0
422 && statbuf.st_dev == filedev
423 && statbuf.st_ino == fileino ) {
424 warn("Can't do inplace edit: %s > 14 characters",
432 if (rename(oldname,SvPVX(sv)) < 0) {
433 warn("Can't rename %s to %s: %s, skipping file",
434 oldname, SvPVX(sv), Strerror(errno) );
440 (void)unlink(SvPVX(sv));
441 (void)rename(oldname,SvPVX(sv));
442 do_open(gv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp);
445 (void)UNLINK(SvPVX(sv));
446 if (link(oldname,SvPVX(sv)) < 0) {
447 warn("Can't rename %s to %s: %s, skipping file",
448 oldname, SvPVX(sv), Strerror(errno) );
452 (void)UNLINK(oldname);
456 #if !defined(DOSISH) && !defined(AMIGAOS)
457 # ifndef VMS /* Don't delete; use automatic file versioning */
458 if (UNLINK(oldname) < 0) {
459 warn("Can't rename %s to %s: %s, skipping file",
460 oldname, SvPVX(sv), Strerror(errno) );
466 croak("Can't do inplace edit without backup");
471 sv_catpv(sv,oldname);
472 SETERRNO(0,0); /* in case sprintf set errno */
473 if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp)) {
474 warn("Can't do inplace edit on %s: %s",
475 oldname, Strerror(errno) );
479 setdefout(argvoutgv);
480 lastfd = PerlIO_fileno(IoIFP(GvIOp(argvoutgv)));
481 (void)Fstat(lastfd,&statbuf);
483 (void)fchmod(lastfd,filemode);
485 (void)chmod(oldname,filemode);
487 if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) {
489 (void)fchown(lastfd,fileuid,filegid);
492 (void)chown(oldname,fileuid,filegid);
497 return IoIFP(GvIOp(gv));
500 PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",SvPV(sv, na), Strerror(errno));
503 (void)do_close(argvoutgv,FALSE);
504 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
511 do_pipe(sv, rgv, wgv)
535 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
536 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
537 IoIFP(wstio) = IoOFP(wstio);
540 if (!IoIFP(rstio) || !IoOFP(wstio)) {
541 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
543 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
548 sv_setsv(sv,&sv_yes);
552 sv_setsv(sv,&sv_undef);
557 /* explicit renamed to avoid C++ conflict -- kja */
559 #ifndef CAN_PROTOTYPE
560 do_close(gv,not_implicit)
564 do_close(GV *gv, bool not_implicit)
565 #endif /* CAN_PROTOTYPE */
572 if (!gv || SvTYPE(gv) != SVt_PVGV) {
573 SETERRNO(EBADF,SS$_IVCHAN);
577 if (!io) { /* never opened */
578 if (dowarn && not_implicit)
579 warn("Close on unopened file <%s>",GvENAME(gv));
582 retval = io_close(io);
586 IoLINES_LEFT(io) = IoPAGE_LEN(io);
600 if (IoTYPE(io) == '|') {
601 status = my_pclose(IoIFP(io));
602 STATUS_NATIVE_SET(status);
603 retval = (STATUS_POSIX == 0);
605 else if (IoTYPE(io) == '-')
608 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
609 retval = (PerlIO_close(IoOFP(io)) != EOF);
610 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
613 retval = (PerlIO_close(IoIFP(io)) != EOF);
615 IoOFP(io) = IoIFP(io) = Nullfp;
636 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
637 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
638 return FALSE; /* this is the most usual case */
641 ch = PerlIO_getc(IoIFP(io));
643 (void)PerlIO_ungetc(IoIFP(io),ch);
646 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
647 if (PerlIO_get_cnt(IoIFP(io)) < -1)
648 PerlIO_set_cnt(IoIFP(io),-1);
650 if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
651 if (!nextargv(argvgv)) /* get another fp handy */
655 return TRUE; /* normal fp, definitely end of file */
667 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
668 #ifdef ULTRIX_STDIO_BOTCH
670 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
672 return PerlIO_tell(fp);
675 warn("tell() on unopened file");
676 SETERRNO(EBADF,RMS$_IFI);
681 do_seek(gv, pos, whence)
689 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
690 #ifdef ULTRIX_STDIO_BOTCH
692 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
694 return PerlIO_seek(fp, pos, whence) >= 0;
697 warn("seek() on unopened file");
698 SETERRNO(EBADF,RMS$_IFI);
703 do_sysseek(gv, pos, whence)
711 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
712 return lseek(PerlIO_fileno(fp), pos, whence);
714 warn("sysseek() on unopened file");
715 SETERRNO(EBADF,RMS$_IFI);
719 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
720 /* code courtesy of William Kucharski */
723 I32 my_chsize(fd, length)
724 I32 fd; /* file descriptor */
725 Off_t length; /* length to set file to */
731 if (Fstat(fd, &filebuf) < 0)
734 if (filebuf.st_size < length) {
736 /* extend file length */
738 if ((lseek(fd, (length - 1), 0)) < 0)
741 /* write a "0" byte */
743 if ((write(fd, "", 1)) != 1)
747 /* truncate length */
752 fl.l_type = F_WRLCK; /* write lock on file space */
755 * This relies on the UNDOCUMENTED F_FREESP argument to
756 * fcntl(2), which truncates the file so that it ends at the
757 * position indicated by fl.l_start.
759 * Will minor miracles never cease?
762 if (fcntl(fd, F_FREESP, &fl) < 0)
769 #endif /* F_FREESP */
779 /* assuming fp is checked earlier */
785 if (SvIOK(sv) && SvIVX(sv) != 0) {
786 PerlIO_printf(fp, ofmt, (double)SvIVX(sv));
787 return !PerlIO_error(fp);
789 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
790 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
791 PerlIO_printf(fp, ofmt, SvNVX(sv));
792 return !PerlIO_error(fp);
795 switch (SvTYPE(sv)) {
804 PerlIO_printf(fp, "%ld", (long)SvIVX(sv));
805 return !PerlIO_error(fp);
809 tmps = SvPV(sv, len);
812 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
814 return !PerlIO_error(fp);
825 if (op->op_flags & OPf_REF) {
827 tmpgv = cGVOP->op_gv;
830 if (io && IoIFP(io)) {
832 sv_setpv(statname,"");
834 return (laststatval = Fstat(PerlIO_fileno(IoIFP(io)), &statcache));
840 warn("Stat on unopened file <%s>",
843 sv_setpv(statname,"");
844 return (laststatval = -1);
850 if (SvTYPE(sv) == SVt_PVGV) {
854 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
855 tmpgv = (GV*)SvRV(sv);
860 sv_setpv(statname,SvPV(sv, na));
862 laststatval = Stat(SvPV(sv, na),&statcache);
863 if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n'))
864 warn(warn_nl, "stat");
875 if (op->op_flags & OPf_REF) {
877 if (cGVOP->op_gv == defgv) {
878 if (laststype != OP_LSTAT)
879 croak("The stat preceding -l _ wasn't an lstat");
882 croak("You can't use -l on a filehandle");
885 laststype = OP_LSTAT;
889 sv_setpv(statname,SvPV(sv, na));
891 laststatval = lstat(SvPV(sv, na),&statcache);
893 laststatval = Stat(SvPV(sv, na),&statcache);
895 if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n'))
896 warn(warn_nl, "lstat");
901 do_aexec(really,mark,sp)
911 New(401,Argv, sp - mark + 1, char*);
913 while (++mark <= sp) {
915 *a++ = SvPVx(*mark, na);
920 if (*Argv[0] != '/') /* will execvp use PATH? */
921 TAINT_ENV(); /* testing IFS here is overkill, probably */
922 if (really && *(tmps = SvPV(really, na)))
925 execvp(Argv[0],Argv);
927 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
938 Argv = Null(char **);
956 while (*cmd && isSPACE(*cmd))
959 /* save an extra exec if possible */
962 if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) {
980 execl(cshname,"csh", flags,ncmd,(char*)0);
988 /* see if there are shell metacharacters in it */
990 if (*cmd == '.' && isSPACE(cmd[1]))
993 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
996 for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
1000 for (s = cmd; *s; s++) {
1001 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1002 if (*s == '\n' && !s[1]) {
1007 execl(sh_path, "sh", "-c", cmd, (char*)0);
1012 New(402,Argv, (s - cmd) / 2 + 2, char*);
1013 Cmd = savepvn(cmd, s-cmd);
1015 for (s = Cmd; *s;) {
1016 while (*s && isSPACE(*s)) s++;
1019 while (*s && !isSPACE(*s)) s++;
1025 execvp(Argv[0],Argv);
1026 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1031 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
1048 register I32 tot = 0;
1050 SV **oldmark = mark;
1053 while (++mark <= sp) {
1054 if (SvTAINTED(*mark)) {
1063 TAINT_PROPER("chmod");
1067 while (++mark <= sp) {
1068 if (chmod(SvPVx(*mark, na),val))
1075 TAINT_PROPER("chown");
1076 if (sp - mark > 2) {
1077 val = SvIVx(*++mark);
1078 val2 = SvIVx(*++mark);
1080 while (++mark <= sp) {
1081 if (chown(SvPVx(*mark, na),val,val2))
1089 TAINT_PROPER("kill");
1092 s = SvPVx(*++mark, na);
1095 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1097 if (!(val = whichsig(s)))
1098 croak("Unrecognized signal name \"%s\"",s);
1103 /* kill() doesn't do process groups (job trees?) under VMS */
1104 if (val < 0) val = -val;
1105 if (val == SIGKILL) {
1106 # include <starlet.h>
1107 /* Use native sys$delprc() to insure that target process is
1108 * deleted; supervisor-mode images don't pay attention to
1109 * CRTL's emulation of Unix-style signals and kill()
1111 while (++mark <= sp) {
1112 I32 proc = SvIVx(*mark);
1113 register unsigned long int __vmssts;
1114 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1118 case SS$_NOSUCHNODE:
1119 SETERRNO(ESRCH,__vmssts);
1122 SETERRNO(EPERM,__vmssts);
1125 SETERRNO(EVMSERR,__vmssts);
1134 while (++mark <= sp) {
1135 I32 proc = SvIVx(*mark);
1137 if (killpg(proc,val)) /* BSD */
1139 if (kill(-proc,val)) /* SYSV */
1145 while (++mark <= sp) {
1146 if (kill(SvIVx(*mark),val))
1153 TAINT_PROPER("unlink");
1155 while (++mark <= sp) {
1156 s = SvPVx(*mark, na);
1157 if (euid || unsafe) {
1161 else { /* don't let root wipe out directories without -U */
1163 if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1165 if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1177 TAINT_PROPER("utime");
1178 if (sp - mark > 2) {
1179 #if defined(I_UTIME) || defined(VMS)
1180 struct utimbuf utbuf;
1188 Zero(&utbuf, sizeof utbuf, char);
1190 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1191 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1193 utbuf.actime = SvIVx(*++mark); /* time accessed */
1194 utbuf.modtime = SvIVx(*++mark); /* time modified */
1197 while (++mark <= sp) {
1198 if (utime(SvPVx(*mark, na),&utbuf))
1210 /* Do the permissions allow some operation? Assumes statcache already set. */
1211 #ifndef VMS /* VMS' cando is in vms.c */
1213 cando(bit, effective, statbufp)
1216 register struct stat *statbufp;
1219 /* [Comments and code from Len Reed]
1220 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1221 * to write-protected files. The execute permission bit is set
1222 * by the Miscrosoft C library stat() function for the following:
1227 * All files and directories are readable.
1228 * Directories and special files, e.g. "CON", cannot be
1230 * [Comment by Tom Dinger -- a directory can have the write-protect
1231 * bit set in the file system, but DOS permits changes to
1232 * the directory anyway. In addition, all bets are off
1233 * here for networked software, such as Novell and
1237 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1238 * too so it will actually look into the files for magic numbers
1240 return (bit & statbufp->st_mode) ? TRUE : FALSE;
1242 #else /* ! DOSISH */
1243 if ((effective ? euid : uid) == 0) { /* root is special */
1244 if (bit == S_IXUSR) {
1245 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1249 return TRUE; /* root reads and writes anything */
1252 if (statbufp->st_uid == (effective ? euid : uid) ) {
1253 if (statbufp->st_mode & bit)
1254 return TRUE; /* ok as "user" */
1256 else if (ingroup((I32)statbufp->st_gid,effective)) {
1257 if (statbufp->st_mode & bit >> 3)
1258 return TRUE; /* ok as "group" */
1260 else if (statbufp->st_mode & bit >> 6)
1261 return TRUE; /* ok as "other" */
1263 #endif /* ! DOSISH */
1268 ingroup(testgid,effective)
1272 if (testgid == (effective ? egid : gid))
1274 #ifdef HAS_GETGROUPS
1279 Groups_t gary[NGROUPS];
1282 anum = getgroups(NGROUPS,gary);
1284 if (gary[anum] == testgid)
1291 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1294 do_ipcget(optype, mark, sp)
1303 key = (key_t)SvNVx(*++mark);
1304 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1305 flags = SvIVx(*++mark);
1311 return msgget(key, flags);
1315 return semget(key, n, flags);
1319 return shmget(key, n, flags);
1321 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1323 croak("%s not implemented", op_desc[optype]);
1326 return -1; /* should never happen */
1330 do_ipcctl(optype, mark, sp)
1338 I32 id, n, cmd, infosize, getinfo;
1341 id = SvIVx(*++mark);
1342 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1343 cmd = SvIVx(*++mark);
1346 getinfo = (cmd == IPC_STAT);
1352 if (cmd == IPC_STAT || cmd == IPC_SET)
1353 infosize = sizeof(struct msqid_ds);
1358 if (cmd == IPC_STAT || cmd == IPC_SET)
1359 infosize = sizeof(struct shmid_ds);
1364 if (cmd == IPC_STAT || cmd == IPC_SET)
1365 infosize = sizeof(struct semid_ds);
1366 else if (cmd == GETALL || cmd == SETALL)
1368 struct semid_ds semds;
1369 if (semctl(id, 0, IPC_STAT, &semds) == -1)
1371 getinfo = (cmd == GETALL);
1372 infosize = semds.sem_nsems * sizeof(short);
1373 /* "short" is technically wrong but much more portable
1374 than guessing about u_?short(_t)? */
1378 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1380 croak("%s not implemented", op_desc[optype]);
1389 SvPV_force(astr, len);
1390 a = SvGROW(astr, infosize+1);
1394 a = SvPV(astr, len);
1395 if (len != infosize)
1396 croak("Bad arg length for %s, is %lu, should be %ld",
1397 op_desc[optype], (unsigned long)len, (long)infosize);
1403 a = (char *)i; /* ouch */
1410 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1415 ret = semctl(id, n, cmd, (struct semid_ds *)a);
1420 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1424 if (getinfo && ret >= 0) {
1425 SvCUR_set(astr, infosize);
1426 *SvEND(astr) = '\0';
1441 I32 id, msize, flags;
1444 id = SvIVx(*++mark);
1446 flags = SvIVx(*++mark);
1447 mbuf = SvPV(mstr, len);
1448 if ((msize = len - sizeof(long)) < 0)
1449 croak("Arg too short for msgsnd");
1451 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1453 croak("msgsnd not implemented");
1467 I32 id, msize, flags, ret;
1470 id = SvIVx(*++mark);
1472 msize = SvIVx(*++mark);
1473 mtype = (long)SvIVx(*++mark);
1474 flags = SvIVx(*++mark);
1475 if (SvTHINKFIRST(mstr)) {
1476 if (SvREADONLY(mstr))
1477 croak("Can't msgrcv to readonly var");
1481 SvPV_force(mstr, len);
1482 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1485 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1487 SvCUR_set(mstr, sizeof(long)+ret);
1488 *SvEND(mstr) = '\0';
1492 croak("msgrcv not implemented");
1508 id = SvIVx(*++mark);
1510 opbuf = SvPV(opstr, opsize);
1511 if (opsize < sizeof(struct sembuf)
1512 || (opsize % sizeof(struct sembuf)) != 0) {
1513 SETERRNO(EINVAL,LIB$_INVARG);
1517 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1519 croak("semop not implemented");
1524 do_shmio(optype, mark, sp)
1533 I32 id, mpos, msize;
1535 struct shmid_ds shmds;
1537 id = SvIVx(*++mark);
1539 mpos = SvIVx(*++mark);
1540 msize = SvIVx(*++mark);
1542 if (shmctl(id, IPC_STAT, &shmds) == -1)
1544 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1545 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1548 shm = (Shmat_t)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1549 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1551 if (optype == OP_SHMREAD) {
1552 SvPV_force(mstr, len);
1553 mbuf = SvGROW(mstr, msize+1);
1555 Copy(shm + mpos, mbuf, msize, char);
1556 SvCUR_set(mstr, msize);
1557 *SvEND(mstr) = '\0';
1563 mbuf = SvPV(mstr, len);
1564 if ((n = len) > msize)
1566 Copy(mbuf, shm + mpos, n, char);
1568 memzero(shm + mpos + n, msize - n);
1572 croak("shm I/O not implemented");
1576 #endif /* SYSV IPC */