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 *gv, register char *name, I32 len, int as_raw, int rawmode, int rawperm, FILE *supplied_fp)
81 register IO *io = GvIOn(gv);
82 PerlIO *saveifp = Nullfp;
83 PerlIO *saveofp = Nullfp;
90 forkprocess = 1; /* assume true if no fork */
93 fd = PerlIO_fileno(IoIFP(io));
94 if (IoTYPE(io) == '-')
96 else if (fd <= maxsysfd) {
99 savetype = IoTYPE(io);
102 else if (IoTYPE(io) == '|')
103 result = my_pclose(IoIFP(io));
104 else if (IoIFP(io) != IoOFP(io)) {
106 result = PerlIO_close(IoOFP(io));
107 PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
110 result = PerlIO_close(IoIFP(io));
113 result = PerlIO_close(IoIFP(io));
114 if (result == EOF && fd > maxsysfd)
115 PerlIO_printf(PerlIO_stderr(), "Warning: unable to close filehandle %s properly.\n",
117 IoOFP(io) = IoIFP(io) = Nullfp;
121 result = rawmode & 3;
122 IoTYPE(io) = "<>++"[result];
123 writing = (result > 0);
124 fd = open(name, rawmode, rawperm);
132 else if (rawmode & O_APPEND)
133 fpmode = (result == 1) ? "a" : "a+";
136 fpmode = (result == 1) ? "w" : "r+";
137 fp = PerlIO_fdopen(fd, fpmode);
144 char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
147 myname = savepvn(name, len);
150 while (len && isSPACE(name[len-1]))
153 mode[0] = mode[1] = mode[2] = '\0';
155 if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */
163 for (name++; isSPACE(*name); name++) ;
166 TAINT_PROPER("piped open");
167 if (dowarn && name[strlen(name)-1] == '|')
168 warn("Can't do bidirectional pipe");
169 fp = my_popen(name,"w");
172 else if (*name == '>') {
173 TAINT_PROPER("open");
176 mode[0] = IoTYPE(io) = 'a';
191 if (!*name && supplied_fp)
195 for (; isSPACE(*name); name++) ;
200 gv = gv_fetchpv(name,FALSE,SVt_PVIO);
204 SETERRNO(EINVAL,SS$_IVCHAN);
209 fd = PerlIO_fileno(IoIFP(thatio));
210 if (IoTYPE(thatio) == 's')
218 if (!(fp = PerlIO_fdopen(fd,mode))) {
226 for (; isSPACE(*name); name++) ;
227 if (strEQ(name,"-")) {
228 fp = PerlIO_stdout();
232 fp = PerlIO_open(name,mode);
236 else if (*name == '<') {
238 for (name++; isSPACE(*name); name++) ;
242 if (strEQ(name,"-")) {
247 fp = PerlIO_open(name,mode);
249 else if (name[len-1] == '|') {
251 while (len && isSPACE(name[len-1]))
254 for (; isSPACE(*name); name++) ;
257 TAINT_PROPER("piped open");
258 fp = my_popen(name,"r");
264 for (; isSPACE(*name); name++) ;
265 if (strEQ(name,"-")) {
270 fp = PerlIO_open(name,"r");
274 if (dowarn && IoTYPE(io) == '<' && strchr(name, '\n'))
275 warn(warn_nl, "open");
279 IoTYPE(io) != '|' && IoTYPE(io) != '-') {
281 if (Fstat(PerlIO_fileno(fp),&statbuf) < 0) {
282 (void)PerlIO_close(fp);
285 if (S_ISSOCK(statbuf.st_mode))
286 IoTYPE(io) = 's'; /* in case a socket was passed in to us */
290 !(statbuf.st_mode & S_IFMT)
296 Sock_size_t buflen = sizeof tmpbuf;
297 if (getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
299 || errno != ENOTSOCK)
300 IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
301 /* but some return 0 for streams too, sigh */
305 if (saveifp) { /* must use old fp? */
306 fd = PerlIO_fileno(saveifp);
308 PerlIO_flush(saveofp); /* emulate PerlIO_close() */
309 if (saveofp != saveifp) { /* was a socket? */
310 PerlIO_close(saveofp);
315 if (fd != PerlIO_fileno(fp)) {
319 dup2(PerlIO_fileno(fp), fd);
320 sv = *av_fetch(fdpid,PerlIO_fileno(fp),TRUE);
321 (void)SvUPGRADE(sv, SVt_IV);
324 sv = *av_fetch(fdpid,fd,TRUE);
325 (void)SvUPGRADE(sv, SVt_IV);
333 #if defined(HAS_FCNTL) && defined(F_SETFD)
334 fd = PerlIO_fileno(fp);
335 fcntl(fd,F_SETFD,fd > maxsysfd);
340 if (IoTYPE(io) == 's'
341 || (IoTYPE(io) == '>' && S_ISCHR(statbuf.st_mode)) ) {
342 if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
356 IoTYPE(io) = savetype;
361 nextargv(register GV *gv)
364 #ifndef FLEXFILENAMES
372 argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
373 if (filemode & (S_ISUID|S_ISGID)) {
374 PerlIO_flush(IoIFP(GvIOn(argvoutgv))); /* chmod must follow last write */
376 (void)fchmod(lastfd,filemode);
378 (void)chmod(oldname,filemode);
382 while (av_len(GvAV(gv)) >= 0) {
385 sv = av_shift(GvAV(gv));
387 sv_setsv(GvSV(gv),sv);
388 SvSETMAGIC(GvSV(gv));
389 oldname = SvPVx(GvSV(gv), len);
390 if (do_open(gv,oldname,len,FALSE,0,0,Nullfp)) {
392 TAINT_PROPER("inplace open");
393 if (strEQ(oldname,"-")) {
394 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
395 return IoIFP(GvIOp(gv));
397 #ifndef FLEXFILENAMES
398 filedev = statbuf.st_dev;
399 fileino = statbuf.st_ino;
401 filemode = statbuf.st_mode;
402 fileuid = statbuf.st_uid;
403 filegid = statbuf.st_gid;
404 if (!S_ISREG(filemode)) {
405 warn("Can't do inplace edit: %s is not a regular file",
412 add_suffix(sv,inplace);
414 sv_catpv(sv,inplace);
416 #ifndef FLEXFILENAMES
417 if (Stat(SvPVX(sv),&statbuf) >= 0
418 && statbuf.st_dev == filedev
419 && statbuf.st_ino == fileino
421 || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
424 warn("Can't do inplace edit: %s would not be uniq",
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 # if !(defined(WIN32) && defined(__BORLANDC__))
486 /* Borland runtime creates a readonly file! */
487 (void)chmod(oldname,filemode);
490 if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) {
492 (void)fchown(lastfd,fileuid,filegid);
495 (void)chown(oldname,fileuid,filegid);
500 return IoIFP(GvIOp(gv));
503 PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",SvPV(sv, na), Strerror(errno));
506 (void)do_close(argvoutgv,FALSE);
507 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
514 do_pipe(SV *sv, GV *rgv, GV *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);
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 */
664 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
665 #ifdef ULTRIX_STDIO_BOTCH
667 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
669 return PerlIO_tell(fp);
672 warn("tell() on unopened file");
673 SETERRNO(EBADF,RMS$_IFI);
678 do_seek(GV *gv, long int pos, int whence)
683 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
684 #ifdef ULTRIX_STDIO_BOTCH
686 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
688 return PerlIO_seek(fp, pos, whence) >= 0;
691 warn("seek() on unopened file");
692 SETERRNO(EBADF,RMS$_IFI);
697 do_sysseek(GV *gv, long int pos, int whence)
702 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
703 return lseek(PerlIO_fileno(fp), pos, whence);
705 warn("sysseek() on unopened file");
706 SETERRNO(EBADF,RMS$_IFI);
710 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
711 /* code courtesy of William Kucharski */
714 I32 my_chsize(fd, length)
715 I32 fd; /* file descriptor */
716 Off_t length; /* length to set file to */
721 if (Fstat(fd, &filebuf) < 0)
724 if (filebuf.st_size < length) {
726 /* extend file length */
728 if ((lseek(fd, (length - 1), 0)) < 0)
731 /* write a "0" byte */
733 if ((write(fd, "", 1)) != 1)
737 /* truncate length */
742 fl.l_type = F_WRLCK; /* write lock on file space */
745 * This relies on the UNDOCUMENTED F_FREESP argument to
746 * fcntl(2), which truncates the file so that it ends at the
747 * position indicated by fl.l_start.
749 * Will minor miracles never cease?
752 if (fcntl(fd, F_FREESP, &fl) < 0)
759 #endif /* F_FREESP */
762 do_print(register SV *sv, FILE *fp)
767 /* assuming fp is checked earlier */
773 if (SvIOK(sv) && SvIVX(sv) != 0) {
774 PerlIO_printf(fp, ofmt, (double)SvIVX(sv));
775 return !PerlIO_error(fp);
777 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
778 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
779 PerlIO_printf(fp, ofmt, SvNVX(sv));
780 return !PerlIO_error(fp);
783 switch (SvTYPE(sv)) {
792 PerlIO_printf(fp, "%ld", (long)SvIVX(sv));
793 return !PerlIO_error(fp);
797 tmps = SvPV(sv, len);
800 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
802 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");
861 if (op->op_flags & OPf_REF) {
863 if (cGVOP->op_gv == defgv) {
864 if (laststype != OP_LSTAT)
865 croak("The stat preceding -l _ wasn't an lstat");
868 croak("You can't use -l on a filehandle");
871 laststype = OP_LSTAT;
875 sv_setpv(statname,SvPV(sv, na));
877 laststatval = lstat(SvPV(sv, na),&statcache);
879 laststatval = Stat(SvPV(sv, na),&statcache);
881 if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n'))
882 warn(warn_nl, "lstat");
887 do_aexec(SV *really, register SV **mark, register SV **sp)
894 New(401,Argv, sp - mark + 1, char*);
896 while (++mark <= sp) {
898 *a++ = SvPVx(*mark, na);
903 if (*Argv[0] != '/') /* will execvp use PATH? */
904 TAINT_ENV(); /* testing IFS here is overkill, probably */
905 if (really && *(tmps = SvPV(really, na)))
908 execvp(Argv[0],Argv);
910 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
921 Argv = Null(char **);
929 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP)
938 while (*cmd && isSPACE(*cmd))
941 /* save an extra exec if possible */
944 if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) {
962 execl(cshname,"csh", flags,ncmd,(char*)0);
970 /* see if there are shell metacharacters in it */
972 if (*cmd == '.' && isSPACE(cmd[1]))
975 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
978 for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
982 for (s = cmd; *s; s++) {
983 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
984 if (*s == '\n' && !s[1]) {
989 execl(sh_path, "sh", "-c", cmd, (char*)0);
994 New(402,Argv, (s - cmd) / 2 + 2, char*);
995 Cmd = savepvn(cmd, s-cmd);
998 while (*s && isSPACE(*s)) s++;
1001 while (*s && !isSPACE(*s)) s++;
1007 execvp(Argv[0],Argv);
1008 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1013 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
1019 #endif /* OS2 || WIN32 */
1022 apply(I32 type, register SV **mark, register SV **sp)
1027 register I32 tot = 0;
1029 SV **oldmark = mark;
1032 while (++mark <= sp) {
1033 if (SvTAINTED(*mark)) {
1042 TAINT_PROPER("chmod");
1046 while (++mark <= sp) {
1047 if (chmod(SvPVx(*mark, na),val))
1054 TAINT_PROPER("chown");
1055 if (sp - mark > 2) {
1056 val = SvIVx(*++mark);
1057 val2 = SvIVx(*++mark);
1059 while (++mark <= sp) {
1060 if (chown(SvPVx(*mark, na),val,val2))
1068 TAINT_PROPER("kill");
1071 s = SvPVx(*++mark, na);
1074 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1076 if (!(val = whichsig(s)))
1077 croak("Unrecognized signal name \"%s\"",s);
1082 /* kill() doesn't do process groups (job trees?) under VMS */
1083 if (val < 0) val = -val;
1084 if (val == SIGKILL) {
1085 # include <starlet.h>
1086 /* Use native sys$delprc() to insure that target process is
1087 * deleted; supervisor-mode images don't pay attention to
1088 * CRTL's emulation of Unix-style signals and kill()
1090 while (++mark <= sp) {
1091 I32 proc = SvIVx(*mark);
1092 register unsigned long int __vmssts;
1093 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1097 case SS$_NOSUCHNODE:
1098 SETERRNO(ESRCH,__vmssts);
1101 SETERRNO(EPERM,__vmssts);
1104 SETERRNO(EVMSERR,__vmssts);
1113 while (++mark <= sp) {
1114 I32 proc = SvIVx(*mark);
1116 if (killpg(proc,val)) /* BSD */
1118 if (kill(-proc,val)) /* SYSV */
1124 while (++mark <= sp) {
1125 if (kill(SvIVx(*mark),val))
1132 TAINT_PROPER("unlink");
1134 while (++mark <= sp) {
1135 s = SvPVx(*mark, na);
1136 if (euid || unsafe) {
1140 else { /* don't let root wipe out directories without -U */
1142 if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1144 if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1156 TAINT_PROPER("utime");
1157 if (sp - mark > 2) {
1158 #if defined(I_UTIME) || defined(VMS)
1159 struct utimbuf utbuf;
1167 Zero(&utbuf, sizeof utbuf, char);
1169 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1170 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1172 utbuf.actime = SvIVx(*++mark); /* time accessed */
1173 utbuf.modtime = SvIVx(*++mark); /* time modified */
1176 while (++mark <= sp) {
1177 if (utime(SvPVx(*mark, na),&utbuf))
1189 /* Do the permissions allow some operation? Assumes statcache already set. */
1190 #ifndef VMS /* VMS' cando is in vms.c */
1192 cando(I32 bit, I32 effective, register struct stat *statbufp)
1195 /* [Comments and code from Len Reed]
1196 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1197 * to write-protected files. The execute permission bit is set
1198 * by the Miscrosoft C library stat() function for the following:
1203 * All files and directories are readable.
1204 * Directories and special files, e.g. "CON", cannot be
1206 * [Comment by Tom Dinger -- a directory can have the write-protect
1207 * bit set in the file system, but DOS permits changes to
1208 * the directory anyway. In addition, all bets are off
1209 * here for networked software, such as Novell and
1213 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1214 * too so it will actually look into the files for magic numbers
1216 return (bit & statbufp->st_mode) ? TRUE : FALSE;
1218 #else /* ! DOSISH */
1219 if ((effective ? euid : uid) == 0) { /* root is special */
1220 if (bit == S_IXUSR) {
1221 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1225 return TRUE; /* root reads and writes anything */
1228 if (statbufp->st_uid == (effective ? euid : uid) ) {
1229 if (statbufp->st_mode & bit)
1230 return TRUE; /* ok as "user" */
1232 else if (ingroup((I32)statbufp->st_gid,effective)) {
1233 if (statbufp->st_mode & bit >> 3)
1234 return TRUE; /* ok as "group" */
1236 else if (statbufp->st_mode & bit >> 6)
1237 return TRUE; /* ok as "other" */
1239 #endif /* ! DOSISH */
1244 ingroup(I32 testgid, I32 effective)
1246 if (testgid == (effective ? egid : gid))
1248 #ifdef HAS_GETGROUPS
1253 Groups_t gary[NGROUPS];
1256 anum = getgroups(NGROUPS,gary);
1258 if (gary[anum] == testgid)
1265 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1268 do_ipcget(I32 optype, SV **mark, SV **sp)
1274 key = (key_t)SvNVx(*++mark);
1275 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1276 flags = SvIVx(*++mark);
1282 return msgget(key, flags);
1286 return semget(key, n, flags);
1290 return shmget(key, n, flags);
1292 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1294 croak("%s not implemented", op_desc[optype]);
1297 return -1; /* should never happen */
1301 do_ipcctl(I32 optype, SV **mark, SV **sp)
1306 I32 id, n, cmd, infosize, getinfo;
1308 #ifdef __linux__ /* XXX Need metaconfig test */
1309 union semun unsemds;
1312 id = SvIVx(*++mark);
1313 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1314 cmd = SvIVx(*++mark);
1317 getinfo = (cmd == IPC_STAT);
1323 if (cmd == IPC_STAT || cmd == IPC_SET)
1324 infosize = sizeof(struct msqid_ds);
1329 if (cmd == IPC_STAT || cmd == IPC_SET)
1330 infosize = sizeof(struct shmid_ds);
1335 if (cmd == IPC_STAT || cmd == IPC_SET)
1336 infosize = sizeof(struct semid_ds);
1337 else if (cmd == GETALL || cmd == SETALL)
1339 struct semid_ds semds;
1340 #ifdef __linux__ /* XXX Need metaconfig test */
1341 /* linux (and Solaris2?) uses :
1342 int semctl (int semid, int semnum, int cmd, union semun arg)
1345 struct semid_ds *buf;
1351 if (semctl(id, 0, IPC_STAT, semun) == -1)
1353 if (semctl(id, 0, IPC_STAT, &semds) == -1)
1356 getinfo = (cmd == GETALL);
1357 infosize = semds.sem_nsems * sizeof(short);
1358 /* "short" is technically wrong but much more portable
1359 than guessing about u_?short(_t)? */
1363 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1365 croak("%s not implemented", op_desc[optype]);
1374 SvPV_force(astr, len);
1375 a = SvGROW(astr, infosize+1);
1379 a = SvPV(astr, len);
1380 if (len != infosize)
1381 croak("Bad arg length for %s, is %lu, should be %ld",
1382 op_desc[optype], (unsigned long)len, (long)infosize);
1388 a = (char *)i; /* ouch */
1395 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1400 #ifdef __linux__ /* XXX Need metaconfig test */
1401 unsemds.buf = (struct semid_ds *)a;
1402 ret = semctl(id, n, cmd, unsemds);
1404 ret = semctl(id, n, cmd, (struct semid_ds *)a);
1410 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1414 if (getinfo && ret >= 0) {
1415 SvCUR_set(astr, infosize);
1416 *SvEND(astr) = '\0';
1423 do_msgsnd(SV **mark, SV **sp)
1429 I32 id, msize, flags;
1432 id = SvIVx(*++mark);
1434 flags = SvIVx(*++mark);
1435 mbuf = SvPV(mstr, len);
1436 if ((msize = len - sizeof(long)) < 0)
1437 croak("Arg too short for msgsnd");
1439 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1441 croak("msgsnd not implemented");
1446 do_msgrcv(SV **mark, SV **sp)
1453 I32 id, msize, flags, ret;
1456 id = SvIVx(*++mark);
1458 msize = SvIVx(*++mark);
1459 mtype = (long)SvIVx(*++mark);
1460 flags = SvIVx(*++mark);
1461 if (SvTHINKFIRST(mstr)) {
1462 if (SvREADONLY(mstr))
1463 croak("Can't msgrcv to readonly var");
1467 SvPV_force(mstr, len);
1468 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1471 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1473 SvCUR_set(mstr, sizeof(long)+ret);
1474 *SvEND(mstr) = '\0';
1478 croak("msgrcv not implemented");
1483 do_semop(SV **mark, SV **sp)
1492 id = SvIVx(*++mark);
1494 opbuf = SvPV(opstr, opsize);
1495 if (opsize < sizeof(struct sembuf)
1496 || (opsize % sizeof(struct sembuf)) != 0) {
1497 SETERRNO(EINVAL,LIB$_INVARG);
1501 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1503 croak("semop not implemented");
1508 do_shmio(I32 optype, SV **mark, SV **sp)
1514 I32 id, mpos, msize;
1516 struct shmid_ds shmds;
1518 id = SvIVx(*++mark);
1520 mpos = SvIVx(*++mark);
1521 msize = SvIVx(*++mark);
1523 if (shmctl(id, IPC_STAT, &shmds) == -1)
1525 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1526 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1529 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1530 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1532 if (optype == OP_SHMREAD) {
1533 SvPV_force(mstr, len);
1534 mbuf = SvGROW(mstr, msize+1);
1536 Copy(shm + mpos, mbuf, msize, char);
1537 SvCUR_set(mstr, msize);
1538 *SvEND(mstr) = '\0';
1544 mbuf = SvPV(mstr, len);
1545 if ((n = len) > msize)
1547 Copy(mbuf, shm + mpos, n, char);
1549 memzero(shm + mpos + n, msize - n);
1553 croak("shm I/O not implemented");
1557 #endif /* SYSV IPC */