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",
504 SvPV(sv, na), Strerror(errno));
507 (void)do_close(argvoutgv,FALSE);
508 setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
515 do_pipe(SV *sv, GV *rgv, GV *wgv)
536 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
537 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
538 IoIFP(wstio) = IoOFP(wstio);
541 if (!IoIFP(rstio) || !IoOFP(wstio)) {
542 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
544 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
549 sv_setsv(sv,&sv_yes);
553 sv_setsv(sv,&sv_undef);
558 /* explicit renamed to avoid C++ conflict -- kja */
560 #ifndef CAN_PROTOTYPE
561 do_close(gv,not_implicit)
565 do_close(GV *gv, bool not_implicit)
566 #endif /* CAN_PROTOTYPE */
573 if (!gv || SvTYPE(gv) != SVt_PVGV) {
574 SETERRNO(EBADF,SS$_IVCHAN);
578 if (!io) { /* never opened */
579 if (dowarn && not_implicit)
580 warn("Close on unopened file <%s>",GvENAME(gv));
583 retval = io_close(io);
587 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;
635 if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
636 if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
637 return FALSE; /* this is the most usual case */
640 ch = PerlIO_getc(IoIFP(io));
642 (void)PerlIO_ungetc(IoIFP(io),ch);
645 if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
646 if (PerlIO_get_cnt(IoIFP(io)) < -1)
647 PerlIO_set_cnt(IoIFP(io),-1);
649 if (op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
650 if (!nextargv(argvgv)) /* get another fp handy */
654 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 return PerlIO_tell(fp);
673 warn("tell() on unopened file");
674 SETERRNO(EBADF,RMS$_IFI);
679 do_seek(GV *gv, long int pos, int whence)
684 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
685 #ifdef ULTRIX_STDIO_BOTCH
687 (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
689 return PerlIO_seek(fp, pos, whence) >= 0;
692 warn("seek() on unopened file");
693 SETERRNO(EBADF,RMS$_IFI);
698 do_sysseek(GV *gv, long int pos, int whence)
703 if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
704 return lseek(PerlIO_fileno(fp), pos, whence);
706 warn("sysseek() on unopened file");
707 SETERRNO(EBADF,RMS$_IFI);
711 #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
712 /* code courtesy of William Kucharski */
715 I32 my_chsize(fd, length)
716 I32 fd; /* file descriptor */
717 Off_t length; /* length to set file to */
722 if (Fstat(fd, &filebuf) < 0)
725 if (filebuf.st_size < length) {
727 /* extend file length */
729 if ((lseek(fd, (length - 1), 0)) < 0)
732 /* write a "0" byte */
734 if ((write(fd, "", 1)) != 1)
738 /* truncate length */
743 fl.l_type = F_WRLCK; /* write lock on file space */
746 * This relies on the UNDOCUMENTED F_FREESP argument to
747 * fcntl(2), which truncates the file so that it ends at the
748 * position indicated by fl.l_start.
750 * Will minor miracles never cease?
753 if (fcntl(fd, F_FREESP, &fl) < 0)
760 #endif /* F_FREESP */
763 do_print(register SV *sv, FILE *fp)
768 /* assuming fp is checked earlier */
774 if (SvIOK(sv) && SvIVX(sv) != 0) {
775 PerlIO_printf(fp, ofmt, (double)SvIVX(sv));
776 return !PerlIO_error(fp);
778 if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
779 || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
780 PerlIO_printf(fp, ofmt, SvNVX(sv));
781 return !PerlIO_error(fp);
784 switch (SvTYPE(sv)) {
793 PerlIO_printf(fp, "%ld", (long)SvIVX(sv));
794 return !PerlIO_error(fp);
798 tmps = SvPV(sv, len);
801 if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
803 return !PerlIO_error(fp);
813 if (op->op_flags & OPf_REF) {
815 tmpgv = cGVOP->op_gv;
818 if (io && IoIFP(io)) {
820 sv_setpv(statname,"");
822 return (laststatval = Fstat(PerlIO_fileno(IoIFP(io)), &statcache));
828 warn("Stat on unopened file <%s>",
831 sv_setpv(statname,"");
832 return (laststatval = -1);
838 if (SvTYPE(sv) == SVt_PVGV) {
842 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
843 tmpgv = (GV*)SvRV(sv);
848 sv_setpv(statname,SvPV(sv, na));
850 laststatval = Stat(SvPV(sv, na),&statcache);
851 if (laststatval < 0 && dowarn && strchr(SvPV(sv, na), '\n'))
852 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(SV *really, register SV **mark, register SV **sp)
895 New(401,Argv, sp - mark + 1, char*);
897 while (++mark <= sp) {
899 *a++ = SvPVx(*mark, na);
904 if (*Argv[0] != '/') /* will execvp use PATH? */
905 TAINT_ENV(); /* testing IFS here is overkill, probably */
906 if (really && *(tmps = SvPV(really, na)))
909 execvp(Argv[0],Argv);
911 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
922 Argv = Null(char **);
930 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP)
939 while (*cmd && isSPACE(*cmd))
942 /* save an extra exec if possible */
945 if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) {
963 execl(cshname,"csh", flags,ncmd,(char*)0);
971 /* see if there are shell metacharacters in it */
973 if (*cmd == '.' && isSPACE(cmd[1]))
976 if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
979 for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
983 for (s = cmd; *s; s++) {
984 if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
985 if (*s == '\n' && !s[1]) {
990 execl(sh_path, "sh", "-c", cmd, (char*)0);
995 New(402,Argv, (s - cmd) / 2 + 2, char*);
996 Cmd = savepvn(cmd, s-cmd);
999 while (*s && isSPACE(*s)) s++;
1002 while (*s && !isSPACE(*s)) s++;
1008 execvp(Argv[0],Argv);
1009 if (errno == ENOEXEC) { /* for system V NIH syndrome */
1014 warn("Can't exec \"%s\": %s", Argv[0], Strerror(errno));
1020 #endif /* OS2 || WIN32 */
1023 apply(I32 type, register SV **mark, register SV **sp)
1028 register I32 tot = 0;
1030 SV **oldmark = mark;
1033 while (++mark <= sp) {
1034 if (SvTAINTED(*mark)) {
1043 TAINT_PROPER("chmod");
1047 while (++mark <= sp) {
1048 if (chmod(SvPVx(*mark, na),val))
1055 TAINT_PROPER("chown");
1056 if (sp - mark > 2) {
1057 val = SvIVx(*++mark);
1058 val2 = SvIVx(*++mark);
1060 while (++mark <= sp) {
1061 if (chown(SvPVx(*mark, na),val,val2))
1069 TAINT_PROPER("kill");
1072 s = SvPVx(*++mark, na);
1075 if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
1077 if (!(val = whichsig(s)))
1078 croak("Unrecognized signal name \"%s\"",s);
1083 /* kill() doesn't do process groups (job trees?) under VMS */
1084 if (val < 0) val = -val;
1085 if (val == SIGKILL) {
1086 # include <starlet.h>
1087 /* Use native sys$delprc() to insure that target process is
1088 * deleted; supervisor-mode images don't pay attention to
1089 * CRTL's emulation of Unix-style signals and kill()
1091 while (++mark <= sp) {
1092 I32 proc = SvIVx(*mark);
1093 register unsigned long int __vmssts;
1094 if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
1098 case SS$_NOSUCHNODE:
1099 SETERRNO(ESRCH,__vmssts);
1102 SETERRNO(EPERM,__vmssts);
1105 SETERRNO(EVMSERR,__vmssts);
1114 while (++mark <= sp) {
1115 I32 proc = SvIVx(*mark);
1117 if (killpg(proc,val)) /* BSD */
1119 if (kill(-proc,val)) /* SYSV */
1125 while (++mark <= sp) {
1126 if (kill(SvIVx(*mark),val))
1133 TAINT_PROPER("unlink");
1135 while (++mark <= sp) {
1136 s = SvPVx(*mark, na);
1137 if (euid || unsafe) {
1141 else { /* don't let root wipe out directories without -U */
1143 if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1145 if (Stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
1157 TAINT_PROPER("utime");
1158 if (sp - mark > 2) {
1159 #if defined(I_UTIME) || defined(VMS)
1160 struct utimbuf utbuf;
1168 Zero(&utbuf, sizeof utbuf, char);
1170 utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
1171 utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
1173 utbuf.actime = SvIVx(*++mark); /* time accessed */
1174 utbuf.modtime = SvIVx(*++mark); /* time modified */
1177 while (++mark <= sp) {
1178 if (utime(SvPVx(*mark, na),&utbuf))
1190 /* Do the permissions allow some operation? Assumes statcache already set. */
1191 #ifndef VMS /* VMS' cando is in vms.c */
1193 cando(I32 bit, I32 effective, register struct stat *statbufp)
1196 /* [Comments and code from Len Reed]
1197 * MS-DOS "user" is similar to UNIX's "superuser," but can't write
1198 * to write-protected files. The execute permission bit is set
1199 * by the Miscrosoft C library stat() function for the following:
1204 * All files and directories are readable.
1205 * Directories and special files, e.g. "CON", cannot be
1207 * [Comment by Tom Dinger -- a directory can have the write-protect
1208 * bit set in the file system, but DOS permits changes to
1209 * the directory anyway. In addition, all bets are off
1210 * here for networked software, such as Novell and
1214 /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
1215 * too so it will actually look into the files for magic numbers
1217 return (bit & statbufp->st_mode) ? TRUE : FALSE;
1219 #else /* ! DOSISH */
1220 if ((effective ? euid : uid) == 0) { /* root is special */
1221 if (bit == S_IXUSR) {
1222 if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
1226 return TRUE; /* root reads and writes anything */
1229 if (statbufp->st_uid == (effective ? euid : uid) ) {
1230 if (statbufp->st_mode & bit)
1231 return TRUE; /* ok as "user" */
1233 else if (ingroup((I32)statbufp->st_gid,effective)) {
1234 if (statbufp->st_mode & bit >> 3)
1235 return TRUE; /* ok as "group" */
1237 else if (statbufp->st_mode & bit >> 6)
1238 return TRUE; /* ok as "other" */
1240 #endif /* ! DOSISH */
1245 ingroup(I32 testgid, I32 effective)
1247 if (testgid == (effective ? egid : gid))
1249 #ifdef HAS_GETGROUPS
1254 Groups_t gary[NGROUPS];
1257 anum = getgroups(NGROUPS,gary);
1259 if (gary[anum] == testgid)
1266 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
1269 do_ipcget(I32 optype, SV **mark, SV **sp)
1275 key = (key_t)SvNVx(*++mark);
1276 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
1277 flags = SvIVx(*++mark);
1283 return msgget(key, flags);
1287 return semget(key, n, flags);
1291 return shmget(key, n, flags);
1293 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1295 croak("%s not implemented", op_desc[optype]);
1298 return -1; /* should never happen */
1302 do_ipcctl(I32 optype, SV **mark, SV **sp)
1307 I32 id, n, cmd, infosize, getinfo;
1309 #ifdef __linux__ /* XXX Need metaconfig test */
1310 union semun unsemds;
1313 id = SvIVx(*++mark);
1314 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
1315 cmd = SvIVx(*++mark);
1318 getinfo = (cmd == IPC_STAT);
1324 if (cmd == IPC_STAT || cmd == IPC_SET)
1325 infosize = sizeof(struct msqid_ds);
1330 if (cmd == IPC_STAT || cmd == IPC_SET)
1331 infosize = sizeof(struct shmid_ds);
1336 if (cmd == IPC_STAT || cmd == IPC_SET)
1337 infosize = sizeof(struct semid_ds);
1338 else if (cmd == GETALL || cmd == SETALL)
1340 struct semid_ds semds;
1341 #ifdef __linux__ /* XXX Need metaconfig test */
1342 /* linux (and Solaris2?) uses :
1343 int semctl (int semid, int semnum, int cmd, union semun arg)
1346 struct semid_ds *buf;
1352 if (semctl(id, 0, IPC_STAT, semun) == -1)
1354 if (semctl(id, 0, IPC_STAT, &semds) == -1)
1357 getinfo = (cmd == GETALL);
1358 infosize = semds.sem_nsems * sizeof(short);
1359 /* "short" is technically wrong but much more portable
1360 than guessing about u_?short(_t)? */
1364 #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
1366 croak("%s not implemented", op_desc[optype]);
1375 SvPV_force(astr, len);
1376 a = SvGROW(astr, infosize+1);
1380 a = SvPV(astr, len);
1381 if (len != infosize)
1382 croak("Bad arg length for %s, is %lu, should be %ld",
1383 op_desc[optype], (unsigned long)len, (long)infosize);
1389 a = (char *)i; /* ouch */
1396 ret = msgctl(id, cmd, (struct msqid_ds *)a);
1401 #ifdef __linux__ /* XXX Need metaconfig test */
1402 unsemds.buf = (struct semid_ds *)a;
1403 ret = semctl(id, n, cmd, unsemds);
1405 ret = semctl(id, n, cmd, (struct semid_ds *)a);
1411 ret = shmctl(id, cmd, (struct shmid_ds *)a);
1415 if (getinfo && ret >= 0) {
1416 SvCUR_set(astr, infosize);
1417 *SvEND(astr) = '\0';
1424 do_msgsnd(SV **mark, SV **sp)
1430 I32 id, msize, flags;
1433 id = SvIVx(*++mark);
1435 flags = SvIVx(*++mark);
1436 mbuf = SvPV(mstr, len);
1437 if ((msize = len - sizeof(long)) < 0)
1438 croak("Arg too short for msgsnd");
1440 return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
1442 croak("msgsnd not implemented");
1447 do_msgrcv(SV **mark, SV **sp)
1454 I32 id, msize, flags, ret;
1457 id = SvIVx(*++mark);
1459 msize = SvIVx(*++mark);
1460 mtype = (long)SvIVx(*++mark);
1461 flags = SvIVx(*++mark);
1462 if (SvTHINKFIRST(mstr)) {
1463 if (SvREADONLY(mstr))
1464 croak("Can't msgrcv to readonly var");
1468 SvPV_force(mstr, len);
1469 mbuf = SvGROW(mstr, sizeof(long)+msize+1);
1472 ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
1474 SvCUR_set(mstr, sizeof(long)+ret);
1475 *SvEND(mstr) = '\0';
1479 croak("msgrcv not implemented");
1484 do_semop(SV **mark, SV **sp)
1493 id = SvIVx(*++mark);
1495 opbuf = SvPV(opstr, opsize);
1496 if (opsize < sizeof(struct sembuf)
1497 || (opsize % sizeof(struct sembuf)) != 0) {
1498 SETERRNO(EINVAL,LIB$_INVARG);
1502 return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
1504 croak("semop not implemented");
1509 do_shmio(I32 optype, SV **mark, SV **sp)
1515 I32 id, mpos, msize;
1517 struct shmid_ds shmds;
1519 id = SvIVx(*++mark);
1521 mpos = SvIVx(*++mark);
1522 msize = SvIVx(*++mark);
1524 if (shmctl(id, IPC_STAT, &shmds) == -1)
1526 if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
1527 SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
1530 shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
1531 if (shm == (char *)-1) /* I hate System V IPC, I really do */
1533 if (optype == OP_SHMREAD) {
1534 SvPV_force(mstr, len);
1535 mbuf = SvGROW(mstr, msize+1);
1537 Copy(shm + mpos, mbuf, msize, char);
1538 SvCUR_set(mstr, msize);
1539 *SvEND(mstr) = '\0';
1545 mbuf = SvPV(mstr, len);
1546 if ((n = len) > msize)
1548 Copy(mbuf, shm + mpos, n, char);
1550 memzero(shm + mpos + n, msize - n);
1554 croak("shm I/O not implemented");
1558 #endif /* SYSV IPC */