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;
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 = my_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 = open(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 (dowarn && name[strlen(name)-1] == '|')
175 warn("Can't do bidirectional pipe");
176 fp = my_popen(name,"w");
179 else if (*name == '>') {
180 TAINT_PROPER("open");
183 mode[0] = IoTYPE(io) = 'a';
198 if (!*name && supplied_fp)
202 for (; isSPACE(*name); name++) ;
207 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
211 SETERRNO(EINVAL,SS$_IVCHAN);
216 fd = PerlIO_fileno(IoIFP(thatio));
217 if (IoTYPE(thatio) == 's')
227 if (!(fp = PerlIO_fdopen(fd,mode))) {
235 for (; isSPACE(*name); name++) ;
236 if (strEQ(name,"-")) {
237 fp = PerlIO_stdout();
241 fp = PerlIO_open(name,mode);
245 else if (*name == '<') {
247 for (name++; isSPACE(*name); name++) ;
251 if (strEQ(name,"-")) {
256 fp = PerlIO_open(name,mode);
258 else if (name[len-1] == '|') {
260 while (len && isSPACE(name[len-1]))
263 for (; isSPACE(*name); name++) ;
266 TAINT_PROPER("piped open");
267 fp = my_popen(name,"r");
273 for (; isSPACE(*name); name++) ;
274 if (strEQ(name,"-")) {
279 fp = PerlIO_open(name,"r");
283 if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n'))
284 warn(warn_nl, "open");
288 IoTYPE(io) != '|' && IoTYPE(io) != '-') {
289 if (Fstat(PerlIO_fileno(fp),&statbuf) < 0) {
290 (void)PerlIO_close(fp);
293 if (S_ISSOCK(statbuf.st_mode))
294 IoTYPE(io) = 's'; /* in case a socket was passed in to us */
298 !(statbuf.st_mode & S_IFMT)
303 Sock_size_t buflen = sizeof tokenbuf;
304 if (getsockname(PerlIO_fileno(fp), (struct sockaddr *)tokenbuf,
306 || errno != ENOTSOCK)
307 IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
308 /* but some return 0 for streams too, sigh */
312 if (saveifp) { /* must use old fp? */
313 fd = PerlIO_fileno(saveifp);
315 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
316 if (saveofp != saveifp) { /* was a socket? */
317 PerlIO_close(saveofp);
322 if (fd != PerlIO_fileno(fp)) {
326 dup2(PerlIO_fileno(fp), fd);
327 sv = *av_fetch(fdpid,PerlIO_fileno(fp),TRUE);
328 (void)SvUPGRADE(sv, SVt_IV);
331 sv = *av_fetch(fdpid,fd,TRUE);
332 (void)SvUPGRADE(sv, SVt_IV);
341 #if defined(HAS_FCNTL) && defined(F_SETFD)
342 fd = PerlIO_fileno(fp);
343 fcntl(fd,F_SETFD,fd > maxsysfd);
347 if (IoTYPE(io) == 's'
348 || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) {
349 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
363 IoTYPE(io) = savetype;
372 #ifndef FLEXFILENAMES
380 argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
381 if (filemode & (S_ISUID|S_ISGID)) {
382 PerlIO_flush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */
384 (void)fchmod(lastfd,filemode);
386 (void)chmod(oldname,filemode);
390 while (av_len(GvAV(gv)) >= 0) {
392 sv = av_shift(GvAV(gv));
394 sv_setsv(GvSV(gv),sv);
395 SvSETMAGIC(GvSV(gv));
396 oldname = SvPVx(GvSV(gv), len);
397 if (do_open(gv,oldname,len,FALSE,0,0,Nullfp)) {
399 TAINT_PROPER("inplace open");
400 if (strEQ(oldname,"-")) {
401 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
402 return IoIFP(GvIOp(gv));
404 #ifndef FLEXFILENAMES
405 filedev = statbuf.st_dev;
406 fileino = statbuf.st_ino;
408 filemode = statbuf.st_mode;
409 fileuid = statbuf.st_uid;
410 filegid = statbuf.st_gid;
411 if (!S_ISREG(filemode)) {
412 warn("Can't do inplace edit: %s is not a regular file",
419 add_suffix(sv,inplace);
421 sv_catpv(sv,inplace);
423 #ifndef FLEXFILENAMES
424 if (Stat(SvPVX(sv),&statbuf) >= 0
425 && statbuf.st_dev == filedev
426 && statbuf.st_ino == fileino ) {
427 warn("Can't do inplace edit: %s > 14 characters",
435 if (rename(oldname,SvPVX(sv)) < 0) {
436 warn("Can't rename %s to %s: %s, skipping file",
437 oldname, SvPVX(sv), Strerror(errno) );
443 (void)unlink(SvPVX(sv));
444 (void)rename(oldname,SvPVX(sv));
445 do_open(gv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp);
448 (void)UNLINK(SvPVX(sv));
449 if (link(oldname,SvPVX(sv)) < 0) {
450 warn("Can't rename %s to %s: %s, skipping file",
451 oldname, SvPVX(sv), Strerror(errno) );
455 (void)UNLINK(oldname);
459 #if !defined(DOSISH) && !defined(AMIGAOS)
460 # ifndef VMS /* Don't delete; use automatic file versioning */
461 if (UNLINK(oldname) < 0) {
462 warn("Can't rename %s to %s: %s, skipping file",
463 oldname, SvPVX(sv), Strerror(errno) );
469 croak("Can't do inplace edit without backup");
474 sv_catpv(sv,oldname);
475 SETERRNO(0,0); /* in case sprintf set errno */
476 if (!do_open(argvoutgv,SvPVX(sv),SvCUR(sv),FALSE,0,0,Nullfp)) {
477 warn("Can't do inplace edit on %s: %s",
478 oldname, Strerror(errno) );
482 setdefout(argvoutgv);
483 lastfd = PerlIO_fileno(IoIFP(GvIOp(argvoutgv)));
484 (void)Fstat(lastfd,&statbuf);
486 (void)fchmod(lastfd,filemode);
488 # if !(defined(WIN32) && defined(__BORLANDC__))
489 /* Borland runtime creates a readonly file! */
490 (void)chmod(oldname,filemode);
493 if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) {
495 (void)fchown(lastfd,fileuid,filegid);
498 (void)chown(oldname,fileuid,filegid);
503 return IoIFP(GvIOp(gv));
506 PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",SvPV(sv, na), Strerror(errno));
509 (void)do_close(argvoutgv,FALSE);
510 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
517 do_pipe(sv, rgv, wgv)
541 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
542 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
543 IoIFP(wstio) = IoOFP(wstio);
546 if (!IoIFP(rstio) || !IoOFP(wstio)) {
547 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
549 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
554 sv_setsv(sv,&sv_yes);
558 sv_setsv(sv,&sv_undef);
563 /* explicit renamed to avoid C++ conflict -- kja */
565 #ifndef CAN_PROTOTYPE
566 do_close(gv,not_implicit)
570 do_close(GV *gv, bool not_implicit)
571 #endif /* CAN_PROTOTYPE */
578 if (!gv || SvTYPE(gv) != SVt_PVGV) {
579 SETERRNO(EBADF,SS$_IVCHAN);
583 if (!io) { /* never opened */
584 if (dowarn && not_implicit)
585 warn("Close on unopened file <%s>",GvENAME(gv));
588 retval = io_close(io);
592 IoLINES_LEFT(io) = IoPAGE_LEN(io);
606 if (IoTYPE(io) == '|') {
607 status = my_pclose(IoIFP(io));
608 STATUS_NATIVE_SET(status);
609 retval = (STATUS_POSIX == 0);
611 else if (IoTYPE(io) == '-')
614 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
615 retval = (PerlIO_close(IoOFP(io)) != EOF);
616 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
619 retval = (PerlIO_close(IoIFP(io)) != EOF);
621 IoOFP(io) = IoIFP(io) = Nullfp;
641 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
642 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
643 return FALSE; /* this is the most usual case */
646 ch = PerlIO_getc(IoIFP(io));
648 (void)PerlIO_ungetc(IoIFP(io),ch);
651 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
652 if (PerlIO_get_cnt(IoIFP(io)) < -1)
653 PerlIO_set_cnt(IoIFP(io),-1);
655 if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
656 if (!nextargv(argvgv)) /* get another fp handy */
660 return TRUE; /* normal fp, definitely end of file */
672 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
673 #ifdef ULTRIX_STDIO_BOTCH
675 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
677 return PerlIO_tell(fp);
680 warn("tell() on unopened file");
681 SETERRNO(EBADF,RMS$_IFI);
686 do_seek(gv, pos, whence)
694 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
695 #ifdef ULTRIX_STDIO_BOTCH
697 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
699 return PerlIO_seek(fp, pos, whence) >= 0;
702 warn("seek() on unopened file");
703 SETERRNO(EBADF,RMS$_IFI);
708 do_sysseek(gv, pos, whence)
716 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
717 return lseek(PerlIO_fileno(fp), pos, whence);
719 warn("sysseek() on unopened file");
720 SETERRNO(EBADF,RMS$_IFI);
724 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
725 /* code courtesy of William Kucharski */
728 I32 my_chsize(fd, length)
729 I32 fd; /* file descriptor */
730 Off_t length; /* length to set file to */
735 if (Fstat(fd, &filebuf) < 0)
738 if (filebuf.st_size < length) {
740 /* extend file length */
742 if ((lseek(fd, (length - 1), 0)) < 0)
745 /* write a "0" byte */
747 if ((write(fd, "", 1)) != 1)
751 /* truncate length */
756 fl.l_type = F_WRLCK; /* write lock on file space */
759 * This relies on the UNDOCUMENTED F_FREESP argument to
760 * fcntl(2), which truncates the file so that it ends at the
761 * position indicated by fl.l_start.
763 * Will minor miracles never cease?
766 if (fcntl(fd, F_FREESP, &fl) < 0)
773 #endif /* F_FREESP */
783 /* assuming fp is checked earlier */
789 if (SvIOK(sv) && SvIVX(sv) != 0) {
790 PerlIO_printf(fp, ofmt, (double)SvIVX(sv));
791 return !PerlIO_error(fp);
793 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
794 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
795 PerlIO_printf(fp, ofmt, SvNVX(sv));
796 return !PerlIO_error(fp);
799 switch (SvTYPE(sv)) {
808 PerlIO_printf(fp, "%ld", (long)SvIVX(sv));
809 return !PerlIO_error(fp);
813 tmps = SvPV(sv, len);
816 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
818 return !PerlIO_error(fp);
829 if (op->op_flags & OPf_REF) {
831 tmpgv = cGVOP->op_gv;
834 if (io && IoIFP(io)) {
836 sv_setpv(statname,"");
838 return (laststatval = Fstat(PerlIO_fileno(IoIFP(io)), &statcache));
844 warn("Stat on unopened file <%s>",
847 sv_setpv(statname,"");
848 return (laststatval = -1);
855 if (SvTYPE(sv) == SVt_PVGV) {
859 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
860 tmpgv = (GV*)SvRV(sv);
866 sv_setpv(statname, s);
868 laststatval = Stat(s, &statcache);
869 if (laststatval < 0 && dowarn && strchr(s, '\n'))
870 warn(warn_nl, "stat");
881 if (op->op_flags & OPf_REF) {
883 if (cGVOP->op_gv == defgv) {
884 if (laststype != OP_LSTAT)
885 croak("The stat preceding -l _ wasn't an lstat");
888 croak("You can't use -l on a filehandle");
891 laststype = OP_LSTAT;
895 sv_setpv(statname,SvPV(sv, na));
897 laststatval = lstat(SvPV(sv, na),&statcache);
899 laststatval = Stat(SvPV(sv, na),&statcache);
901 if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n'))
902 warn(warn_nl, "lstat");
907 do_aexec(really,mark,sp)
916 New(401,Argv, sp - mark + 1, char*);
918 while (++mark <= sp) {
920 *a++ = SvPVx(*mark, na);
925 if (*Argv[0] != '/') /* will execvp use PATH? */
926 TAINT_ENV(); /* testing IFS here is overkill, probably */
927 if (really && *(tmps = SvPV(really, na)))
930 execvp(Argv[0],Argv);
932 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
943 Argv = Null(char **);
951 #if !defined(OS2) && !defined(WIN32)
961 while (*cmd && isSPACE(*cmd))
964 /* save an extra exec if possible */
967 if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) {
985 execl(cshname,"csh", flags,ncmd,(char*)0);
993 /* see if there are shell metacharacters in it */
995 if (*cmd == '.' && isSPACE(cmd[1]))
998 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
1001 for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
1005 for (s = cmd; *s; s++) {
1006 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
1007 if (*s == '\n' && !s[1]) {
1012 execl(sh_path, "sh", "-c", cmd, (char*)0);
1017 New(402,Argv, (s - cmd) / 2 + 2, char*);
1018 Cmd = savepvn(cmd, s-cmd);
1020 for (s = Cmd; *s;) {
1021 while (*s && isSPACE(*s)) s++;
1024 while (*s && !isSPACE(*s)) s++;
1030 execvp(Argv[0],Argv);
1031 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1036 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
1042 #endif /* OS2 || WIN32 */
1052 register I32 tot = 0;
1054 SV **oldmark = mark;
1057 while (++mark <= sp) {
1058 if (SvTAINTED(*mark)) {
1067 TAINT_PROPER("chmod");
1071 while (++mark <= sp) {
1072 if (chmod(SvPVx(*mark, na),val))
1079 TAINT_PROPER("chown");
1080 if (sp - mark > 2) {
1081 val = SvIVx(*++mark);
1082 val2 = SvIVx(*++mark);
1084 while (++mark <= sp) {
1085 if (chown(SvPVx(*mark, na),val,val2))
1093 TAINT_PROPER("kill");
1096 s = SvPVx(*++mark, na);
1099 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1101 if (!(val = whichsig(s)))
1102 croak("Unrecognized signal name \"%s\"",s);
1107 /* kill() doesn't do process groups (job trees?) under VMS */
1108 if (val < 0) val = -val;
1109 if (val == SIGKILL) {
1110 # include <starlet.h>
1111 /* Use native sys$delprc() to insure that target process is
1112 * deleted; supervisor-mode images don't pay attention to
1113 * CRTL's emulation of Unix-style signals and kill()
1115 while (++mark <= sp) {
1116 I32 proc = SvIVx(*mark);
1117 register unsigned long int __vmssts;
1118 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1122 case SS$_NOSUCHNODE:
1123 SETERRNO(ESRCH,__vmssts);
1126 SETERRNO(EPERM,__vmssts);
1129 SETERRNO(EVMSERR,__vmssts);
1138 while (++mark <= sp) {
1139 I32 proc = SvIVx(*mark);
1141 if (killpg(proc,val)) /* BSD */
1143 if (kill(-proc,val)) /* SYSV */
1149 while (++mark <= sp) {
1150 if (kill(SvIVx(*mark),val))
1157 TAINT_PROPER("unlink");
1159 while (++mark <= sp) {
1160 s = SvPVx(*mark, na);
1161 if (euid || unsafe) {
1165 else { /* don't let root wipe out directories without -U */
1167 if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1169 if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1181 TAINT_PROPER("utime");
1182 if (sp - mark > 2) {
1183 #if defined(I_UTIME) || defined(VMS)
1184 struct utimbuf utbuf;
1192 Zero(&utbuf, sizeof utbuf, char);
1194 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1195 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1197 utbuf.actime = SvIVx(*++mark); /* time accessed */
1198 utbuf.modtime = SvIVx(*++mark); /* time modified */
1201 while (++mark <= sp) {
1202 if (utime(SvPVx(*mark, na),&utbuf))
1214 /* Do the permissions allow some operation? Assumes statcache already set. */
1215 #ifndef VMS /* VMS' cando is in vms.c */
1217 cando(bit, effective, statbufp)
1220 register struct stat *statbufp;
1223 /* [Comments and code from Len Reed]
1224 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1225 * to write-protected files. The execute permission bit is set
1226 * by the Miscrosoft C library stat() function for the following:
1231 * All files and directories are readable.
1232 * Directories and special files, e.g. "CON", cannot be
1234 * [Comment by Tom Dinger -- a directory can have the write-protect
1235 * bit set in the file system, but DOS permits changes to
1236 * the directory anyway. In addition, all bets are off
1237 * here for networked software, such as Novell and
1241 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1242 * too so it will actually look into the files for magic numbers
1244 return (bit & statbufp->st_mode) ? TRUE : FALSE;
1246 #else /* ! DOSISH */
1247 if ((effective ? euid : uid) == 0) { /* root is special */
1248 if (bit == S_IXUSR) {
1249 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1253 return TRUE; /* root reads and writes anything */
1256 if (statbufp->st_uid == (effective ? euid : uid) ) {
1257 if (statbufp->st_mode & bit)
1258 return TRUE; /* ok as "user" */
1260 else if (ingroup((I32)statbufp->st_gid,effective)) {
1261 if (statbufp->st_mode & bit >> 3)
1262 return TRUE; /* ok as "group" */
1264 else if (statbufp->st_mode & bit >> 6)
1265 return TRUE; /* ok as "other" */
1267 #endif /* ! DOSISH */
1272 ingroup(testgid,effective)
1276 if (testgid == (effective ? egid : gid))
1278 #ifdef HAS_GETGROUPS
1283 Groups_t gary[NGROUPS];
1286 anum = getgroups(NGROUPS,gary);
1288 if (gary[anum] == testgid)
1295 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1298 do_ipcget(optype, mark, sp)
1306 key = (key_t)SvNVx(*++mark);
1307 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1308 flags = SvIVx(*++mark);
1314 return msgget(key, flags);
1318 return semget(key, n, flags);
1322 return shmget(key, n, flags);
1324 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1326 croak("%s not implemented", op_desc[optype]);
1329 return -1; /* should never happen */
1333 do_ipcctl(optype, mark, sp)
1340 I32 id, n, cmd, infosize, getinfo;
1342 #ifdef __linux__ /* XXX Need metaconfig test */
1343 union semun unsemds;
1346 id = SvIVx(*++mark);
1347 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1348 cmd = SvIVx(*++mark);
1351 getinfo = (cmd == IPC_STAT);
1357 if (cmd == IPC_STAT || cmd == IPC_SET)
1358 infosize = sizeof(struct msqid_ds);
1363 if (cmd == IPC_STAT || cmd == IPC_SET)
1364 infosize = sizeof(struct shmid_ds);
1369 if (cmd == IPC_STAT || cmd == IPC_SET)
1370 infosize = sizeof(struct semid_ds);
1371 else if (cmd == GETALL || cmd == SETALL)
1373 struct semid_ds semds;
1374 #ifdef __linux__ /* XXX Need metaconfig test */
1375 /* linux (and Solaris2?) uses :
1376 int semctl (int semid, int semnum, int cmd, union semun arg)
1379 struct semid_ds *buf;
1385 if (semctl(id, 0, IPC_STAT, semun) == -1)
1387 if (semctl(id, 0, IPC_STAT, &semds) == -1)
1390 getinfo = (cmd == GETALL);
1391 infosize = semds.sem_nsems * sizeof(short);
1392 /* "short" is technically wrong but much more portable
1393 than guessing about u_?short(_t)? */
1397 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1399 croak("%s not implemented", op_desc[optype]);
1408 SvPV_force(astr, len);
1409 a = SvGROW(astr, infosize+1);
1413 a = SvPV(astr, len);
1414 if (len != infosize)
1415 croak("Bad arg length for %s, is %lu, should be %ld",
1416 op_desc[optype], (unsigned long)len, (long)infosize);
1422 a = (char *)i; /* ouch */
1429 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1434 #ifdef __linux__ /* XXX Need metaconfig test */
1435 unsemds.buf = (struct semid_ds *)a;
1436 ret = semctl(id, n, cmd, unsemds);
1438 ret = semctl(id, n, cmd, (struct semid_ds *)a);
1444 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1448 if (getinfo && ret >= 0) {
1449 SvCUR_set(astr, infosize);
1450 *SvEND(astr) = '\0';
1464 I32 id, msize, flags;
1467 id = SvIVx(*++mark);
1469 flags = SvIVx(*++mark);
1470 mbuf = SvPV(mstr, len);
1471 if ((msize = len - sizeof(long)) < 0)
1472 croak("Arg too short for msgsnd");
1474 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1476 croak("msgsnd not implemented");
1489 I32 id, msize, flags, ret;
1492 id = SvIVx(*++mark);
1494 msize = SvIVx(*++mark);
1495 mtype = (long)SvIVx(*++mark);
1496 flags = SvIVx(*++mark);
1497 if (SvTHINKFIRST(mstr)) {
1498 if (SvREADONLY(mstr))
1499 croak("Can't msgrcv to readonly var");
1503 SvPV_force(mstr, len);
1504 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1507 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1509 SvCUR_set(mstr, sizeof(long)+ret);
1510 *SvEND(mstr) = '\0';
1514 croak("msgrcv not implemented");
1529 id = SvIVx(*++mark);
1531 opbuf = SvPV(opstr, opsize);
1532 if (opsize < sizeof(struct sembuf)
1533 || (opsize % sizeof(struct sembuf)) != 0) {
1534 SETERRNO(EINVAL,LIB$_INVARG);
1538 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1540 croak("semop not implemented");
1545 do_shmio(optype, mark, sp)
1553 I32 id, mpos, msize;
1555 struct shmid_ds shmds;
1557 id = SvIVx(*++mark);
1559 mpos = SvIVx(*++mark);
1560 msize = SvIVx(*++mark);
1562 if (shmctl(id, IPC_STAT, &shmds) == -1)
1564 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1565 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1568 shm = (Shmat_t)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1569 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1571 if (optype == OP_SHMREAD) {
1572 SvPV_force(mstr, len);
1573 mbuf = SvGROW(mstr, msize+1);
1575 Copy(shm + mpos, mbuf, msize, char);
1576 SvCUR_set(mstr, msize);
1577 *SvEND(mstr) = '\0';
1583 mbuf = SvPV(mstr, len);
1584 if ((n = len) > msize)
1586 Copy(mbuf, shm + mpos, n, char);
1588 memzero(shm + mpos + n, msize - n);
1592 croak("shm I/O not implemented");
1596 #endif /* SYSV IPC */