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) {
388 sv = av_shift(GvAV(gv));
390 sv_setsv(GvSV(gv),sv);
391 SvSETMAGIC(GvSV(gv));
392 oldname = SvPVx(GvSV(gv), len);
393 if (do_open(gv,oldname,len,FALSE,0,0,Nullfp)) {
395 TAINT_PROPER("inplace open");
396 if (strEQ(oldname,"-")) {
397 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
398 return IoIFP(GvIOp(gv));
400 #ifndef FLEXFILENAMES
401 filedev = statbuf.st_dev;
402 fileino = statbuf.st_ino;
404 filemode = statbuf.st_mode;
405 fileuid = statbuf.st_uid;
406 filegid = statbuf.st_gid;
407 if (!S_ISREG(filemode)) {
408 warn("Can't do inplace edit: %s is not a regular file",
415 add_suffix(sv,inplace);
417 sv_catpv(sv,inplace);
419 #ifndef FLEXFILENAMES
420 if (Stat(SvPVX(sv),&statbuf) >= 0
421 && statbuf.st_dev == filedev
422 && statbuf.st_ino == fileino ) {
423 warn("Can't do inplace edit: %s > 14 characters",
431 if (rename(oldname,SvPVX(sv)) < 0) {
432 warn("Can't rename %s to %s: %s, skipping file",
433 oldname, SvPVX(sv), Strerror(errno) );
439 (void)unlink(SvPVX(sv));
440 (void)rename(oldname,SvPVX(sv));
441 do_open(gv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp);
444 (void)UNLINK(SvPVX(sv));
445 if (link(oldname,SvPVX(sv)) < 0) {
446 warn("Can't rename %s to %s: %s, skipping file",
447 oldname, SvPVX(sv), Strerror(errno) );
451 (void)UNLINK(oldname);
455 #if !defined(DOSISH) && !defined(AMIGAOS)
456 # ifndef VMS /* Don't delete; use automatic file versioning */
457 if (UNLINK(oldname) < 0) {
458 warn("Can't rename %s to %s: %s, skipping file",
459 oldname, SvPVX(sv), Strerror(errno) );
465 croak("Can't do inplace edit without backup");
470 sv_catpv(sv,oldname);
471 SETERRNO(0,0); /* in case sprintf set errno */
472 if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp)) {
473 warn("Can't do inplace edit on %s: %s",
474 oldname, Strerror(errno) );
478 setdefout(argvoutgv);
479 lastfd = PerlIO_fileno(IoIFP(GvIOp(argvoutgv)));
480 (void)Fstat(lastfd,&statbuf);
482 (void)fchmod(lastfd,filemode);
484 (void)chmod(oldname,filemode);
486 if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) {
488 (void)fchown(lastfd,fileuid,filegid);
491 (void)chown(oldname,fileuid,filegid);
496 return IoIFP(GvIOp(gv));
499 PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",SvPV(sv, na), Strerror(errno));
502 (void)do_close(argvoutgv,FALSE);
503 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
510 do_pipe(sv, rgv, wgv)
534 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
535 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
536 IoIFP(wstio) = IoOFP(wstio);
539 if (!IoIFP(rstio) || !IoOFP(wstio)) {
540 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
542 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
547 sv_setsv(sv,&sv_yes);
551 sv_setsv(sv,&sv_undef);
556 /* explicit renamed to avoid C++ conflict -- kja */
558 #ifndef CAN_PROTOTYPE
559 do_close(gv,not_implicit)
563 do_close(GV *gv, bool not_implicit)
564 #endif /* CAN_PROTOTYPE */
571 if (!gv || SvTYPE(gv) != SVt_PVGV) {
572 SETERRNO(EBADF,SS$_IVCHAN);
576 if (!io) { /* never opened */
577 if (dowarn && not_implicit)
578 warn("Close on unopened file <%s>",GvENAME(gv));
581 retval = io_close(io);
585 IoLINES_LEFT(io) = IoPAGE_LEN(io);
599 if (IoTYPE(io) == '|') {
600 status = my_pclose(IoIFP(io));
601 STATUS_NATIVE_SET(status);
602 retval = (STATUS_POSIX == 0);
604 else if (IoTYPE(io) == '-')
607 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
608 retval = (PerlIO_close(IoOFP(io)) != EOF);
609 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
612 retval = (PerlIO_close(IoIFP(io)) != EOF);
614 IoOFP(io) = IoIFP(io) = Nullfp;
634 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
635 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
636 return FALSE; /* this is the most usual case */
639 ch = PerlIO_getc(IoIFP(io));
641 (void)PerlIO_ungetc(IoIFP(io),ch);
644 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
645 if (PerlIO_get_cnt(IoIFP(io)) < -1)
646 PerlIO_set_cnt(IoIFP(io),-1);
648 if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
649 if (!nextargv(argvgv)) /* get another fp handy */
653 return TRUE; /* normal fp, definitely end of file */
665 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
666 #ifdef ULTRIX_STDIO_BOTCH
668 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
670 if (op->op_type == OP_SYSTELL)
671 return lseek(PerlIO_fileno(fp), 0L, 1);
673 return PerlIO_tell(fp);
676 warn("%s() on unopened file", op_name[op->op_type]);
677 SETERRNO(EBADF,RMS$_IFI);
682 do_seek(gv, pos, whence)
690 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
691 #ifdef ULTRIX_STDIO_BOTCH
693 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
695 if (op->op_type == OP_SYSSEEK)
696 return lseek(PerlIO_fileno(fp), pos, whence) >= 0;
698 return PerlIO_seek(fp, pos, whence) >= 0;
701 warn("%s() on unopened file", op_name[op->op_type]);
702 SETERRNO(EBADF,RMS$_IFI);
706 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
707 /* code courtesy of William Kucharski */
710 I32 my_chsize(fd, length)
711 I32 fd; /* file descriptor */
712 Off_t length; /* length to set file to */
718 if (Fstat(fd, &filebuf) < 0)
721 if (filebuf.st_size < length) {
723 /* extend file length */
725 if ((lseek(fd, (length - 1), 0)) < 0)
728 /* write a "0" byte */
730 if ((write(fd, "", 1)) != 1)
734 /* truncate length */
739 fl.l_type = F_WRLCK; /* write lock on file space */
742 * This relies on the UNDOCUMENTED F_FREESP argument to
743 * fcntl(2), which truncates the file so that it ends at the
744 * position indicated by fl.l_start.
746 * Will minor miracles never cease?
749 if (fcntl(fd, F_FREESP, &fl) < 0)
756 #endif /* F_FREESP */
766 /* assuming fp is checked earlier */
772 if (SvIOK(sv) && SvIVX(sv) != 0) {
773 PerlIO_printf(fp, ofmt, (double)SvIVX(sv));
774 return !PerlIO_error(fp);
776 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
777 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
778 PerlIO_printf(fp, ofmt, SvNVX(sv));
779 return !PerlIO_error(fp);
782 switch (SvTYPE(sv)) {
791 PerlIO_printf(fp, "%ld", (long)SvIVX(sv));
792 return !PerlIO_error(fp);
796 tmps = SvPV(sv, len);
799 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
801 return !PerlIO_error(fp);
812 if (op->op_flags & OPf_REF) {
814 tmpgv = cGVOP->op_gv;
817 if (io && IoIFP(io)) {
819 sv_setpv(statname,"");
821 return (laststatval = Fstat(PerlIO_fileno(IoIFP(io)), &statcache));
827 warn("Stat on unopened file <%s>",
830 sv_setpv(statname,"");
831 return (laststatval = -1);
837 if (SvTYPE(sv) == SVt_PVGV) {
841 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
842 tmpgv = (GV*)SvRV(sv);
847 sv_setpv(statname,SvPV(sv, na));
849 laststatval = Stat(SvPV(sv, na),&statcache);
850 if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n'))
851 warn(warn_nl, "stat");
862 if (op->op_flags & OPf_REF) {
864 if (cGVOP->op_gv == defgv) {
865 if (laststype != OP_LSTAT)
866 croak("The stat preceding -l _ wasn't an lstat");
869 croak("You can't use -l on a filehandle");
872 laststype = OP_LSTAT;
876 sv_setpv(statname,SvPV(sv, na));
878 laststatval = lstat(SvPV(sv, na),&statcache);
880 laststatval = Stat(SvPV(sv, na),&statcache);
882 if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n'))
883 warn(warn_nl, "lstat");
888 do_aexec(really,mark,sp)
897 New(401,Argv, sp - mark + 1, char*);
899 while (++mark <= sp) {
901 *a++ = SvPVx(*mark, na);
906 if (*Argv[0] != '/') /* will execvp use PATH? */
907 TAINT_ENV(); /* testing IFS here is overkill, probably */
908 if (really && *(tmps = SvPV(really, na)))
911 execvp(Argv[0],Argv);
913 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
924 Argv = Null(char **);
942 while (*cmd && isSPACE(*cmd))
945 /* save an extra exec if possible */
948 if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) {
966 execl(cshname,"csh", flags,ncmd,(char*)0);
974 /* see if there are shell metacharacters in it */
976 if (*cmd == '.' && isSPACE(cmd[1]))
979 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
982 for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
986 for (s = cmd; *s; s++) {
987 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
988 if (*s == '\n' && !s[1]) {
993 execl(sh_path, "sh", "-c", cmd, (char*)0);
998 New(402,Argv, (s - cmd) / 2 + 2, char*);
999 Cmd = savepvn(cmd, s-cmd);
1001 for (s = Cmd; *s;) {
1002 while (*s && isSPACE(*s)) s++;
1005 while (*s && !isSPACE(*s)) s++;
1011 execvp(Argv[0],Argv);
1012 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1017 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
1033 register I32 tot = 0;
1035 SV **oldmark = mark;
1038 while (++mark <= sp) {
1039 if (SvTAINTED(*mark)) {
1048 TAINT_PROPER("chmod");
1052 while (++mark <= sp) {
1053 if (chmod(SvPVx(*mark, na),val))
1060 TAINT_PROPER("chown");
1061 if (sp - mark > 2) {
1062 val = SvIVx(*++mark);
1063 val2 = SvIVx(*++mark);
1065 while (++mark <= sp) {
1066 if (chown(SvPVx(*mark, na),val,val2))
1074 TAINT_PROPER("kill");
1077 s = SvPVx(*++mark, na);
1080 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1082 if (!(val = whichsig(s)))
1083 croak("Unrecognized signal name \"%s\"",s);
1088 /* kill() doesn't do process groups (job trees?) under VMS */
1089 if (val < 0) val = -val;
1090 if (val == SIGKILL) {
1091 # include <starlet.h>
1092 /* Use native sys$delprc() to insure that target process is
1093 * deleted; supervisor-mode images don't pay attention to
1094 * CRTL's emulation of Unix-style signals and kill()
1096 while (++mark <= sp) {
1097 I32 proc = SvIVx(*mark);
1098 register unsigned long int __vmssts;
1099 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1103 case SS$_NOSUCHNODE:
1104 SETERRNO(ESRCH,__vmssts);
1107 SETERRNO(EPERM,__vmssts);
1110 SETERRNO(EVMSERR,__vmssts);
1119 while (++mark <= sp) {
1120 I32 proc = SvIVx(*mark);
1122 if (killpg(proc,val)) /* BSD */
1124 if (kill(-proc,val)) /* SYSV */
1130 while (++mark <= sp) {
1131 if (kill(SvIVx(*mark),val))
1138 TAINT_PROPER("unlink");
1140 while (++mark <= sp) {
1141 s = SvPVx(*mark, na);
1142 if (euid || unsafe) {
1146 else { /* don't let root wipe out directories without -U */
1148 if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1150 if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1162 TAINT_PROPER("utime");
1163 if (sp - mark > 2) {
1164 #if defined(I_UTIME) || defined(VMS)
1165 struct utimbuf utbuf;
1173 Zero(&utbuf, sizeof utbuf, char);
1175 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1176 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1178 utbuf.actime = SvIVx(*++mark); /* time accessed */
1179 utbuf.modtime = SvIVx(*++mark); /* time modified */
1182 while (++mark <= sp) {
1183 if (utime(SvPVx(*mark, na),&utbuf))
1195 /* Do the permissions allow some operation? Assumes statcache already set. */
1196 #ifndef VMS /* VMS' cando is in vms.c */
1198 cando(bit, effective, statbufp)
1201 register struct stat *statbufp;
1204 /* [Comments and code from Len Reed]
1205 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1206 * to write-protected files. The execute permission bit is set
1207 * by the Miscrosoft C library stat() function for the following:
1212 * All files and directories are readable.
1213 * Directories and special files, e.g. "CON", cannot be
1215 * [Comment by Tom Dinger -- a directory can have the write-protect
1216 * bit set in the file system, but DOS permits changes to
1217 * the directory anyway. In addition, all bets are off
1218 * here for networked software, such as Novell and
1222 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1223 * too so it will actually look into the files for magic numbers
1225 return (bit & statbufp->st_mode) ? TRUE : FALSE;
1227 #else /* ! DOSISH */
1228 if ((effective ? euid : uid) == 0) { /* root is special */
1229 if (bit == S_IXUSR) {
1230 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1234 return TRUE; /* root reads and writes anything */
1237 if (statbufp->st_uid == (effective ? euid : uid) ) {
1238 if (statbufp->st_mode & bit)
1239 return TRUE; /* ok as "user" */
1241 else if (ingroup((I32)statbufp->st_gid,effective)) {
1242 if (statbufp->st_mode & bit >> 3)
1243 return TRUE; /* ok as "group" */
1245 else if (statbufp->st_mode & bit >> 6)
1246 return TRUE; /* ok as "other" */
1248 #endif /* ! DOSISH */
1253 ingroup(testgid,effective)
1257 if (testgid == (effective ? egid : gid))
1259 #ifdef HAS_GETGROUPS
1264 Groups_t gary[NGROUPS];
1267 anum = getgroups(NGROUPS,gary);
1269 if (gary[anum] == testgid)
1276 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1279 do_ipcget(optype, mark, sp)
1287 key = (key_t)SvNVx(*++mark);
1288 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1289 flags = SvIVx(*++mark);
1295 return msgget(key, flags);
1299 return semget(key, n, flags);
1303 return shmget(key, n, flags);
1305 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1307 croak("%s not implemented", op_desc[optype]);
1310 return -1; /* should never happen */
1314 do_ipcctl(optype, mark, sp)
1321 I32 id, n, cmd, infosize, getinfo;
1324 id = SvIVx(*++mark);
1325 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1326 cmd = SvIVx(*++mark);
1329 getinfo = (cmd == IPC_STAT);
1335 if (cmd == IPC_STAT || cmd == IPC_SET)
1336 infosize = sizeof(struct msqid_ds);
1341 if (cmd == IPC_STAT || cmd == IPC_SET)
1342 infosize = sizeof(struct shmid_ds);
1347 if (cmd == IPC_STAT || cmd == IPC_SET)
1348 infosize = sizeof(struct semid_ds);
1349 else if (cmd == GETALL || cmd == SETALL)
1351 struct semid_ds semds;
1352 if (semctl(id, 0, IPC_STAT, &semds) == -1)
1354 getinfo = (cmd == GETALL);
1355 infosize = semds.sem_nsems * sizeof(short);
1356 /* "short" is technically wrong but much more portable
1357 than guessing about u_?short(_t)? */
1361 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1363 croak("%s not implemented", op_desc[optype]);
1372 SvPV_force(astr, len);
1373 a = SvGROW(astr, infosize+1);
1377 a = SvPV(astr, len);
1378 if (len != infosize)
1379 croak("Bad arg length for %s, is %lu, should be %ld",
1380 op_desc[optype], (unsigned long)len, (long)infosize);
1386 a = (char *)i; /* ouch */
1393 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1398 ret = semctl(id, n, cmd, (struct semid_ds *)a);
1403 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1407 if (getinfo && ret >= 0) {
1408 SvCUR_set(astr, infosize);
1409 *SvEND(astr) = '\0';
1423 I32 id, msize, flags;
1426 id = SvIVx(*++mark);
1428 flags = SvIVx(*++mark);
1429 mbuf = SvPV(mstr, len);
1430 if ((msize = len - sizeof(long)) < 0)
1431 croak("Arg too short for msgsnd");
1433 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1435 croak("msgsnd not implemented");
1448 I32 id, msize, flags, ret;
1451 id = SvIVx(*++mark);
1453 msize = SvIVx(*++mark);
1454 mtype = (long)SvIVx(*++mark);
1455 flags = SvIVx(*++mark);
1456 if (SvTHINKFIRST(mstr)) {
1457 if (SvREADONLY(mstr))
1458 croak("Can't msgrcv to readonly var");
1462 SvPV_force(mstr, len);
1463 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1466 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1468 SvCUR_set(mstr, sizeof(long)+ret);
1469 *SvEND(mstr) = '\0';
1473 croak("msgrcv not implemented");
1488 id = SvIVx(*++mark);
1490 opbuf = SvPV(opstr, opsize);
1491 if (opsize < sizeof(struct sembuf)
1492 || (opsize % sizeof(struct sembuf)) != 0) {
1493 SETERRNO(EINVAL,LIB$_INVARG);
1497 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1499 croak("semop not implemented");
1504 do_shmio(optype, mark, sp)
1512 I32 id, mpos, msize;
1514 struct shmid_ds shmds;
1516 id = SvIVx(*++mark);
1518 mpos = SvIVx(*++mark);
1519 msize = SvIVx(*++mark);
1521 if (shmctl(id, IPC_STAT, &shmds) == -1)
1523 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1524 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1527 shm = (Shmat_t)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1528 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1530 if (optype == OP_SHMREAD) {
1531 SvPV_force(mstr, len);
1532 mbuf = SvGROW(mstr, msize+1);
1534 Copy(shm + mpos, mbuf, msize, char);
1535 SvCUR_set(mstr, msize);
1536 *SvEND(mstr) = '\0';
1542 mbuf = SvPV(mstr, len);
1543 if ((n = len) > msize)
1545 Copy(mbuf, shm + mpos, n, char);
1547 memzero(shm + mpos + n, msize - n);
1551 croak("shm I/O not implemented");
1555 #endif /* SYSV IPC */