summaryrefslogtreecommitdiff
path: root/contrib/perl5/doio.c
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/perl5/doio.c')
-rw-r--r--contrib/perl5/doio.c1670
1 files changed, 1670 insertions, 0 deletions
diff --git a/contrib/perl5/doio.c b/contrib/perl5/doio.c
new file mode 100644
index 000000000000..85d604bc0385
--- /dev/null
+++ b/contrib/perl5/doio.c
@@ -0,0 +1,1670 @@
+/* doio.c
+ *
+ * Copyright (c) 1991-1997, Larry Wall
+ *
+ * You may distribute under the terms of either the GNU General Public
+ * License or the Artistic License, as specified in the README file.
+ *
+ */
+
+/*
+ * "Far below them they saw the white waters pour into a foaming bowl, and
+ * then swirl darkly about a deep oval basin in the rocks, until they found
+ * their way out again through a narrow gate, and flowed away, fuming and
+ * chattering, into calmer and more level reaches."
+ */
+
+#include "EXTERN.h"
+#include "perl.h"
+
+#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
+#include <sys/ipc.h>
+#ifdef HAS_MSG
+#include <sys/msg.h>
+#endif
+#ifdef HAS_SEM
+#include <sys/sem.h>
+#endif
+#ifdef HAS_SHM
+#include <sys/shm.h>
+# ifndef HAS_SHMAT_PROTOTYPE
+ extern Shmat_t shmat _((int, char *, int));
+# endif
+#endif
+#endif
+
+#ifdef I_UTIME
+# if defined(_MSC_VER) || defined(__MINGW32__)
+# include <sys/utime.h>
+# else
+# include <utime.h>
+# endif
+#endif
+
+#ifdef I_FCNTL
+#include <fcntl.h>
+#endif
+#ifdef I_SYS_FILE
+#include <sys/file.h>
+#endif
+#ifdef O_EXCL
+# define OPEN_EXCL O_EXCL
+#else
+# define OPEN_EXCL 0
+#endif
+
+#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
+#include <signal.h>
+#endif
+
+/* XXX If this causes problems, set i_unistd=undef in the hint file. */
+#ifdef I_UNISTD
+# include <unistd.h>
+#endif
+
+#if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */
+# include <sys/socket.h>
+# include <netdb.h>
+# ifndef ENOTSOCK
+# ifdef I_NET_ERRNO
+# include <net/errno.h>
+# endif
+# endif
+#endif
+
+/* Put this after #includes because <unistd.h> defines _XOPEN_*. */
+#ifndef Sock_size_t
+# if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__)
+# define Sock_size_t Size_t
+# else
+# define Sock_size_t int
+# endif
+#endif
+
+bool
+do_open(GV *gv, register char *name, I32 len, int as_raw, int rawmode, int rawperm, PerlIO *supplied_fp)
+{
+ register IO *io = GvIOn(gv);
+ PerlIO *saveifp = Nullfp;
+ PerlIO *saveofp = Nullfp;
+ char savetype = ' ';
+ int writing = 0;
+ PerlIO *fp;
+ int fd;
+ int result;
+ bool was_fdopen = FALSE;
+
+ PL_forkprocess = 1; /* assume true if no fork */
+
+ if (IoIFP(io)) {
+ fd = PerlIO_fileno(IoIFP(io));
+ if (IoTYPE(io) == '-')
+ result = 0;
+ else if (fd <= PL_maxsysfd) {
+ saveifp = IoIFP(io);
+ saveofp = IoOFP(io);
+ savetype = IoTYPE(io);
+ result = 0;
+ }
+ else if (IoTYPE(io) == '|')
+ result = PerlProc_pclose(IoIFP(io));
+ else if (IoIFP(io) != IoOFP(io)) {
+ if (IoOFP(io)) {
+ result = PerlIO_close(IoOFP(io));
+ PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
+ }
+ else
+ result = PerlIO_close(IoIFP(io));
+ }
+ else
+ result = PerlIO_close(IoIFP(io));
+ if (result == EOF && fd > PL_maxsysfd)
+ PerlIO_printf(PerlIO_stderr(), "Warning: unable to close filehandle %s properly.\n",
+ GvENAME(gv));
+ IoOFP(io) = IoIFP(io) = Nullfp;
+ }
+
+ if (as_raw) {
+#ifndef O_ACCMODE
+#define O_ACCMODE 3 /* Assume traditional implementation */
+#endif
+ switch (result = rawmode & O_ACCMODE) {
+ case O_RDONLY:
+ IoTYPE(io) = '<';
+ break;
+ case O_WRONLY:
+ IoTYPE(io) = '>';
+ break;
+ case O_RDWR:
+ default:
+ IoTYPE(io) = '+';
+ break;
+ }
+
+ writing = (result > 0);
+ fd = PerlLIO_open3(name, rawmode, rawperm);
+
+ if (fd == -1)
+ fp = NULL;
+ else {
+ char *fpmode;
+ if (result == O_RDONLY)
+ fpmode = "r";
+#ifdef O_APPEND
+ else if (rawmode & O_APPEND)
+ fpmode = (result == O_WRONLY) ? "a" : "a+";
+#endif
+ else
+ fpmode = (result == O_WRONLY) ? "w" : "r+";
+ fp = PerlIO_fdopen(fd, fpmode);
+ if (!fp)
+ PerlLIO_close(fd);
+ }
+ }
+ else {
+ char *myname;
+ char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
+ int dodup;
+
+ myname = savepvn(name, len);
+ SAVEFREEPV(myname);
+ name = myname;
+ while (len && isSPACE(name[len-1]))
+ name[--len] = '\0';
+
+ mode[0] = mode[1] = mode[2] = '\0';
+ IoTYPE(io) = *name;
+ if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */
+ mode[1] = *name++;
+ --len;
+ writing = 1;
+ }
+
+ if (*name == '|') {
+ /*SUPPRESS 530*/
+ for (name++; isSPACE(*name); name++) ;
+ if (strNE(name,"-"))
+ TAINT_ENV();
+ TAINT_PROPER("piped open");
+ if (name[strlen(name)-1] == '|') {
+ name[strlen(name)-1] = '\0' ;
+ if (PL_dowarn)
+ warn("Can't do bidirectional pipe");
+ }
+ fp = PerlProc_popen(name,"w");
+ writing = 1;
+ }
+ else if (*name == '>') {
+ TAINT_PROPER("open");
+ name++;
+ if (*name == '>') {
+ mode[0] = IoTYPE(io) = 'a';
+ name++;
+ }
+ else
+ mode[0] = 'w';
+ writing = 1;
+
+ if (*name == '&') {
+ duplicity:
+ dodup = 1;
+ name++;
+ if (*name == '=') {
+ dodup = 0;
+ name++;
+ }
+ if (!*name && supplied_fp)
+ fp = supplied_fp;
+ else {
+ /*SUPPRESS 530*/
+ for (; isSPACE(*name); name++) ;
+ if (isDIGIT(*name))
+ fd = atoi(name);
+ else {
+ IO* thatio;
+ gv = gv_fetchpv(name,FALSE,SVt_PVIO);
+ thatio = GvIO(gv);
+ if (!thatio) {
+#ifdef EINVAL
+ SETERRNO(EINVAL,SS$_IVCHAN);
+#endif
+ goto say_false;
+ }
+ if (IoIFP(thatio)) {
+ fd = PerlIO_fileno(IoIFP(thatio));
+ if (IoTYPE(thatio) == 's')
+ IoTYPE(io) = 's';
+ }
+ else
+ fd = -1;
+ }
+ if (dodup)
+ fd = PerlLIO_dup(fd);
+ else
+ was_fdopen = TRUE;
+ if (!(fp = PerlIO_fdopen(fd,mode))) {
+ if (dodup)
+ PerlLIO_close(fd);
+ }
+ }
+ }
+ else {
+ /*SUPPRESS 530*/
+ for (; isSPACE(*name); name++) ;
+ if (strEQ(name,"-")) {
+ fp = PerlIO_stdout();
+ IoTYPE(io) = '-';
+ }
+ else {
+ fp = PerlIO_open(name,mode);
+ }
+ }
+ }
+ else if (*name == '<') {
+ /*SUPPRESS 530*/
+ for (name++; isSPACE(*name); name++) ;
+ mode[0] = 'r';
+ if (*name == '&')
+ goto duplicity;
+ if (strEQ(name,"-")) {
+ fp = PerlIO_stdin();
+ IoTYPE(io) = '-';
+ }
+ else
+ fp = PerlIO_open(name,mode);
+ }
+ else if (len > 1 && name[len-1] == '|') {
+ name[--len] = '\0';
+ while (len && isSPACE(name[len-1]))
+ name[--len] = '\0';
+ /*SUPPRESS 530*/
+ for (; isSPACE(*name); name++) ;
+ if (strNE(name,"-"))
+ TAINT_ENV();
+ TAINT_PROPER("piped open");
+ fp = PerlProc_popen(name,"r");
+ IoTYPE(io) = '|';
+ }
+ else {
+ IoTYPE(io) = '<';
+ /*SUPPRESS 530*/
+ for (; isSPACE(*name); name++) ;
+ if (strEQ(name,"-")) {
+ fp = PerlIO_stdin();
+ IoTYPE(io) = '-';
+ }
+ else
+ fp = PerlIO_open(name,"r");
+ }
+ }
+ if (!fp) {
+ if (PL_dowarn && IoTYPE(io) == '<' && strchr(name, '\n'))
+ warn(warn_nl, "open");
+ goto say_false;
+ }
+ if (IoTYPE(io) &&
+ IoTYPE(io) != '|' && IoTYPE(io) != '-') {
+ dTHR;
+ if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
+ (void)PerlIO_close(fp);
+ goto say_false;
+ }
+ if (S_ISSOCK(PL_statbuf.st_mode))
+ IoTYPE(io) = 's'; /* in case a socket was passed in to us */
+#ifdef HAS_SOCKET
+ else if (
+#ifdef S_IFMT
+ !(PL_statbuf.st_mode & S_IFMT)
+#else
+ !PL_statbuf.st_mode
+#endif
+ ) {
+ char tmpbuf[256];
+ Sock_size_t buflen = sizeof tmpbuf;
+ if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
+ &buflen) >= 0
+ || errno != ENOTSOCK)
+ IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
+ /* but some return 0 for streams too, sigh */
+ }
+#endif
+ }
+ if (saveifp) { /* must use old fp? */
+ fd = PerlIO_fileno(saveifp);
+ if (saveofp) {
+ PerlIO_flush(saveofp); /* emulate PerlIO_close() */
+ if (saveofp != saveifp) { /* was a socket? */
+ PerlIO_close(saveofp);
+ if (fd > 2)
+ Safefree(saveofp);
+ }
+ }
+ if (fd != PerlIO_fileno(fp)) {
+ int pid;
+ SV *sv;
+
+ PerlLIO_dup2(PerlIO_fileno(fp), fd);
+ sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
+ (void)SvUPGRADE(sv, SVt_IV);
+ pid = SvIVX(sv);
+ SvIVX(sv) = 0;
+ sv = *av_fetch(PL_fdpid,fd,TRUE);
+ (void)SvUPGRADE(sv, SVt_IV);
+ SvIVX(sv) = pid;
+ if (!was_fdopen)
+ PerlIO_close(fp);
+
+ }
+ fp = saveifp;
+ PerlIO_clearerr(fp);
+ }
+#if defined(HAS_FCNTL) && defined(F_SETFD)
+ fd = PerlIO_fileno(fp);
+ fcntl(fd,F_SETFD,fd > PL_maxsysfd);
+#endif
+ IoIFP(io) = fp;
+ if (writing) {
+ dTHR;
+ if (IoTYPE(io) == 's'
+ || (IoTYPE(io) == '>' && S_ISCHR(PL_statbuf.st_mode)) ) {
+ if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
+ PerlIO_close(fp);
+ IoIFP(io) = Nullfp;
+ goto say_false;
+ }
+ }
+ else
+ IoOFP(io) = fp;
+ }
+ return TRUE;
+
+say_false:
+ IoIFP(io) = saveifp;
+ IoOFP(io) = saveofp;
+ IoTYPE(io) = savetype;
+ return FALSE;
+}
+
+PerlIO *
+nextargv(register GV *gv)
+{
+ register SV *sv;
+#ifndef FLEXFILENAMES
+ int filedev;
+ int fileino;
+#endif
+ int fileuid;
+ int filegid;
+
+ if (!PL_argvoutgv)
+ PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
+ if (PL_filemode & (S_ISUID|S_ISGID)) {
+ PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
+#ifdef HAS_FCHMOD
+ (void)fchmod(PL_lastfd,PL_filemode);
+#else
+ (void)PerlLIO_chmod(PL_oldname,PL_filemode);
+#endif
+ }
+ PL_filemode = 0;
+ while (av_len(GvAV(gv)) >= 0) {
+ dTHR;
+ STRLEN oldlen;
+ sv = av_shift(GvAV(gv));
+ SAVEFREESV(sv);
+ sv_setsv(GvSV(gv),sv);
+ SvSETMAGIC(GvSV(gv));
+ PL_oldname = SvPVx(GvSV(gv), oldlen);
+ if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
+ if (PL_inplace) {
+ TAINT_PROPER("inplace open");
+ if (oldlen == 1 && *PL_oldname == '-') {
+ setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
+ return IoIFP(GvIOp(gv));
+ }
+#ifndef FLEXFILENAMES
+ filedev = PL_statbuf.st_dev;
+ fileino = PL_statbuf.st_ino;
+#endif
+ PL_filemode = PL_statbuf.st_mode;
+ fileuid = PL_statbuf.st_uid;
+ filegid = PL_statbuf.st_gid;
+ if (!S_ISREG(PL_filemode)) {
+ warn("Can't do inplace edit: %s is not a regular file",
+ PL_oldname );
+ do_close(gv,FALSE);
+ continue;
+ }
+ if (*PL_inplace) {
+ char *star = strchr(PL_inplace, '*');
+ if (star) {
+ char *begin = PL_inplace;
+ sv_setpvn(sv, "", 0);
+ do {
+ sv_catpvn(sv, begin, star - begin);
+ sv_catpvn(sv, PL_oldname, oldlen);
+ begin = ++star;
+ } while ((star = strchr(begin, '*')));
+ if (*begin)
+ sv_catpv(sv,begin);
+ }
+ else {
+ sv_catpv(sv,PL_inplace);
+ }
+#ifndef FLEXFILENAMES
+ if (PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
+ && PL_statbuf.st_dev == filedev
+ && PL_statbuf.st_ino == fileino
+#ifdef DJGPP
+ || (_djstat_fail_bits & _STFAIL_TRUENAME)!=0
+#endif
+ ) {
+ warn("Can't do inplace edit: %s would not be uniq",
+ SvPVX(sv) );
+ do_close(gv,FALSE);
+ continue;
+ }
+#endif
+#ifdef HAS_RENAME
+#ifndef DOSISH
+ if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
+ warn("Can't rename %s to %s: %s, skipping file",
+ PL_oldname, SvPVX(sv), Strerror(errno) );
+ do_close(gv,FALSE);
+ continue;
+ }
+#else
+ do_close(gv,FALSE);
+ (void)PerlLIO_unlink(SvPVX(sv));
+ (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
+ do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
+#endif /* DOSISH */
+#else
+ (void)UNLINK(SvPVX(sv));
+ if (link(PL_oldname,SvPVX(sv)) < 0) {
+ warn("Can't rename %s to %s: %s, skipping file",
+ PL_oldname, SvPVX(sv), Strerror(errno) );
+ do_close(gv,FALSE);
+ continue;
+ }
+ (void)UNLINK(PL_oldname);
+#endif
+ }
+ else {
+#if !defined(DOSISH) && !defined(AMIGAOS)
+# ifndef VMS /* Don't delete; use automatic file versioning */
+ if (UNLINK(PL_oldname) < 0) {
+ warn("Can't remove %s: %s, skipping file",
+ PL_oldname, Strerror(errno) );
+ do_close(gv,FALSE);
+ continue;
+ }
+# endif
+#else
+ croak("Can't do inplace edit without backup");
+#endif
+ }
+
+ sv_setpvn(sv,">",!PL_inplace);
+ sv_catpvn(sv,PL_oldname,oldlen);
+ SETERRNO(0,0); /* in case sprintf set errno */
+#ifdef VMS
+ if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
+ O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp)) {
+#else
+ if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
+ O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp)) {
+#endif
+ warn("Can't do inplace edit on %s: %s",
+ PL_oldname, Strerror(errno) );
+ do_close(gv,FALSE);
+ continue;
+ }
+ setdefout(PL_argvoutgv);
+ PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
+ (void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
+#ifdef HAS_FCHMOD
+ (void)fchmod(PL_lastfd,PL_filemode);
+#else
+# if !(defined(WIN32) && defined(__BORLANDC__))
+ /* Borland runtime creates a readonly file! */
+ (void)PerlLIO_chmod(PL_oldname,PL_filemode);
+# endif
+#endif
+ if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
+#ifdef HAS_FCHOWN
+ (void)fchown(PL_lastfd,fileuid,filegid);
+#else
+#ifdef HAS_CHOWN
+ (void)PerlLIO_chown(PL_oldname,fileuid,filegid);
+#endif
+#endif
+ }
+ }
+ return IoIFP(GvIOp(gv));
+ }
+ else
+ PerlIO_printf(PerlIO_stderr(), "Can't open %s: %s\n",
+ SvPV(sv, PL_na), Strerror(errno));
+ }
+ if (PL_inplace) {
+ (void)do_close(PL_argvoutgv,FALSE);
+ setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
+ }
+ return Nullfp;
+}
+
+#ifdef HAS_PIPE
+void
+do_pipe(SV *sv, GV *rgv, GV *wgv)
+{
+ register IO *rstio;
+ register IO *wstio;
+ int fd[2];
+
+ if (!rgv)
+ goto badexit;
+ if (!wgv)
+ goto badexit;
+
+ rstio = GvIOn(rgv);
+ wstio = GvIOn(wgv);
+
+ if (IoIFP(rstio))
+ do_close(rgv,FALSE);
+ if (IoIFP(wstio))
+ do_close(wgv,FALSE);
+
+ if (PerlProc_pipe(fd) < 0)
+ goto badexit;
+ IoIFP(rstio) = PerlIO_fdopen(fd[0], "r");
+ IoOFP(wstio) = PerlIO_fdopen(fd[1], "w");
+ IoIFP(wstio) = IoOFP(wstio);
+ IoTYPE(rstio) = '<';
+ IoTYPE(wstio) = '>';
+ if (!IoIFP(rstio) || !IoOFP(wstio)) {
+ if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
+ else PerlLIO_close(fd[0]);
+ if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
+ else PerlLIO_close(fd[1]);
+ goto badexit;
+ }
+
+ sv_setsv(sv,&PL_sv_yes);
+ return;
+
+badexit:
+ sv_setsv(sv,&PL_sv_undef);
+ return;
+}
+#endif
+
+/* explicit renamed to avoid C++ conflict -- kja */
+bool
+do_close(GV *gv, bool not_implicit)
+{
+ bool retval;
+ IO *io;
+
+ if (!gv)
+ gv = PL_argvgv;
+ if (!gv || SvTYPE(gv) != SVt_PVGV) {
+ if (not_implicit)
+ SETERRNO(EBADF,SS$_IVCHAN);
+ return FALSE;
+ }
+ io = GvIO(gv);
+ if (!io) { /* never opened */
+ if (not_implicit) {
+ if (PL_dowarn)
+ warn("Close on unopened file <%s>",GvENAME(gv));
+ SETERRNO(EBADF,SS$_IVCHAN);
+ }
+ return FALSE;
+ }
+ retval = io_close(io);
+ if (not_implicit) {
+ IoLINES(io) = 0;
+ IoPAGE(io) = 0;
+ IoLINES_LEFT(io) = IoPAGE_LEN(io);
+ }
+ IoTYPE(io) = ' ';
+ return retval;
+}
+
+bool
+io_close(IO *io)
+{
+ bool retval = FALSE;
+ int status;
+
+ if (IoIFP(io)) {
+ if (IoTYPE(io) == '|') {
+ status = PerlProc_pclose(IoIFP(io));
+ STATUS_NATIVE_SET(status);
+ retval = (STATUS_POSIX == 0);
+ }
+ else if (IoTYPE(io) == '-')
+ retval = TRUE;
+ else {
+ if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
+ retval = (PerlIO_close(IoOFP(io)) != EOF);
+ PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
+ }
+ else
+ retval = (PerlIO_close(IoIFP(io)) != EOF);
+ }
+ IoOFP(io) = IoIFP(io) = Nullfp;
+ }
+ else {
+ SETERRNO(EBADF,SS$_IVCHAN);
+ }
+
+ return retval;
+}
+
+bool
+do_eof(GV *gv)
+{
+ dTHR;
+ register IO *io;
+ int ch;
+
+ io = GvIO(gv);
+
+ if (!io)
+ return TRUE;
+
+ while (IoIFP(io)) {
+
+ if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
+ if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
+ return FALSE; /* this is the most usual case */
+ }
+
+ ch = PerlIO_getc(IoIFP(io));
+ if (ch != EOF) {
+ (void)PerlIO_ungetc(IoIFP(io),ch);
+ return FALSE;
+ }
+ if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
+ if (PerlIO_get_cnt(IoIFP(io)) < -1)
+ PerlIO_set_cnt(IoIFP(io),-1);
+ }
+ if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
+ if (!nextargv(PL_argvgv)) /* get another fp handy */
+ return TRUE;
+ }
+ else
+ return TRUE; /* normal fp, definitely end of file */
+ }
+ return TRUE;
+}
+
+long
+do_tell(GV *gv)
+{
+ register IO *io;
+ register PerlIO *fp;
+
+ if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
+#ifdef ULTRIX_STDIO_BOTCH
+ if (PerlIO_eof(fp))
+ (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
+#endif
+ return PerlIO_tell(fp);
+ }
+ if (PL_dowarn)
+ warn("tell() on unopened file");
+ SETERRNO(EBADF,RMS$_IFI);
+ return -1L;
+}
+
+bool
+do_seek(GV *gv, long int pos, int whence)
+{
+ register IO *io;
+ register PerlIO *fp;
+
+ if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
+#ifdef ULTRIX_STDIO_BOTCH
+ if (PerlIO_eof(fp))
+ (void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
+#endif
+ return PerlIO_seek(fp, pos, whence) >= 0;
+ }
+ if (PL_dowarn)
+ warn("seek() on unopened file");
+ SETERRNO(EBADF,RMS$_IFI);
+ return FALSE;
+}
+
+long
+do_sysseek(GV *gv, long int pos, int whence)
+{
+ register IO *io;
+ register PerlIO *fp;
+
+ if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
+ return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
+ if (PL_dowarn)
+ warn("sysseek() on unopened file");
+ SETERRNO(EBADF,RMS$_IFI);
+ return -1L;
+}
+
+int
+do_binmode(PerlIO *fp, int iotype, int flag)
+{
+ if (flag != TRUE)
+ croak("panic: unsetting binmode"); /* Not implemented yet */
+#ifdef DOSISH
+#ifdef atarist
+ if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN))
+ return 1;
+ else
+ return 0;
+#else
+ if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) {
+#if defined(WIN32) && defined(__BORLANDC__)
+ /* The translation mode of the stream is maintained independent
+ * of the translation mode of the fd in the Borland RTL (heavy
+ * digging through their runtime sources reveal). User has to
+ * set the mode explicitly for the stream (though they don't
+ * document this anywhere). GSAR 97-5-24
+ */
+ PerlIO_seek(fp,0L,0);
+ ((FILE*)fp)->flags |= _F_BIN;
+#endif
+ return 1;
+ }
+ else
+ return 0;
+#endif
+#else
+#if defined(USEMYBINMODE)
+ if (my_binmode(fp,iotype) != NULL)
+ return 1;
+ else
+ return 0;
+#else
+ return 1;
+#endif
+#endif
+}
+
+#if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
+ /* code courtesy of William Kucharski */
+#define HAS_CHSIZE
+
+I32 my_chsize(fd, length)
+I32 fd; /* file descriptor */
+Off_t length; /* length to set file to */
+{
+ struct flock fl;
+ struct stat filebuf;
+
+ if (PerlLIO_fstat(fd, &filebuf) < 0)
+ return -1;
+
+ if (filebuf.st_size < length) {
+
+ /* extend file length */
+
+ if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
+ return -1;
+
+ /* write a "0" byte */
+
+ if ((PerlLIO_write(fd, "", 1)) != 1)
+ return -1;
+ }
+ else {
+ /* truncate length */
+
+ fl.l_whence = 0;
+ fl.l_len = 0;
+ fl.l_start = length;
+ fl.l_type = F_WRLCK; /* write lock on file space */
+
+ /*
+ * This relies on the UNDOCUMENTED F_FREESP argument to
+ * fcntl(2), which truncates the file so that it ends at the
+ * position indicated by fl.l_start.
+ *
+ * Will minor miracles never cease?
+ */
+
+ if (fcntl(fd, F_FREESP, &fl) < 0)
+ return -1;
+
+ }
+
+ return 0;
+}
+#endif /* F_FREESP */
+
+bool
+do_print(register SV *sv, PerlIO *fp)
+{
+ register char *tmps;
+ STRLEN len;
+
+ /* assuming fp is checked earlier */
+ if (!sv)
+ return TRUE;
+ if (PL_ofmt) {
+ if (SvGMAGICAL(sv))
+ mg_get(sv);
+ if (SvIOK(sv) && SvIVX(sv) != 0) {
+ PerlIO_printf(fp, PL_ofmt, (double)SvIVX(sv));
+ return !PerlIO_error(fp);
+ }
+ if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
+ || (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
+ PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
+ return !PerlIO_error(fp);
+ }
+ }
+ switch (SvTYPE(sv)) {
+ case SVt_NULL:
+ if (PL_dowarn)
+ warn(warn_uninit);
+ return TRUE;
+ case SVt_IV:
+ if (SvIOK(sv)) {
+ if (SvGMAGICAL(sv))
+ mg_get(sv);
+ PerlIO_printf(fp, "%ld", (long)SvIVX(sv));
+ return !PerlIO_error(fp);
+ }
+ /* FALL THROUGH */
+ default:
+ tmps = SvPV(sv, len);
+ break;
+ }
+ if (len && (PerlIO_write(fp,tmps,len) == 0 || PerlIO_error(fp)))
+ return FALSE;
+ return !PerlIO_error(fp);
+}
+
+I32
+my_stat(ARGSproto)
+{
+ djSP;
+ IO *io;
+ GV* tmpgv;
+
+ if (PL_op->op_flags & OPf_REF) {
+ EXTEND(SP,1);
+ tmpgv = cGVOP->op_gv;
+ do_fstat:
+ io = GvIO(tmpgv);
+ if (io && IoIFP(io)) {
+ PL_statgv = tmpgv;
+ sv_setpv(PL_statname,"");
+ PL_laststype = OP_STAT;
+ return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
+ }
+ else {
+ if (tmpgv == PL_defgv)
+ return PL_laststatval;
+ if (PL_dowarn)
+ warn("Stat on unopened file <%s>",
+ GvENAME(tmpgv));
+ PL_statgv = Nullgv;
+ sv_setpv(PL_statname,"");
+ return (PL_laststatval = -1);
+ }
+ }
+ else {
+ SV* sv = POPs;
+ char *s;
+ PUTBACK;
+ if (SvTYPE(sv) == SVt_PVGV) {
+ tmpgv = (GV*)sv;
+ goto do_fstat;
+ }
+ else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
+ tmpgv = (GV*)SvRV(sv);
+ goto do_fstat;
+ }
+
+ s = SvPV(sv, PL_na);
+ PL_statgv = Nullgv;
+ sv_setpv(PL_statname, s);
+ PL_laststype = OP_STAT;
+ PL_laststatval = PerlLIO_stat(s, &PL_statcache);
+ if (PL_laststatval < 0 && PL_dowarn && strchr(s, '\n'))
+ warn(warn_nl, "stat");
+ return PL_laststatval;
+ }
+}
+
+I32
+my_lstat(ARGSproto)
+{
+ djSP;
+ SV *sv;
+ if (PL_op->op_flags & OPf_REF) {
+ EXTEND(SP,1);
+ if (cGVOP->op_gv == PL_defgv) {
+ if (PL_laststype != OP_LSTAT)
+ croak("The stat preceding -l _ wasn't an lstat");
+ return PL_laststatval;
+ }
+ croak("You can't use -l on a filehandle");
+ }
+
+ PL_laststype = OP_LSTAT;
+ PL_statgv = Nullgv;
+ sv = POPs;
+ PUTBACK;
+ sv_setpv(PL_statname,SvPV(sv, PL_na));
+#ifdef HAS_LSTAT
+ PL_laststatval = PerlLIO_lstat(SvPV(sv, PL_na),&PL_statcache);
+#else
+ PL_laststatval = PerlLIO_stat(SvPV(sv, PL_na),&PL_statcache);
+#endif
+ if (PL_laststatval < 0 && PL_dowarn && strchr(SvPV(sv, PL_na), '\n'))
+ warn(warn_nl, "lstat");
+ return PL_laststatval;
+}
+
+bool
+do_aexec(SV *really, register SV **mark, register SV **sp)
+{
+ register char **a;
+ char *tmps;
+
+ if (sp > mark) {
+ dTHR;
+ New(401,PL_Argv, sp - mark + 1, char*);
+ a = PL_Argv;
+ while (++mark <= sp) {
+ if (*mark)
+ *a++ = SvPVx(*mark, PL_na);
+ else
+ *a++ = "";
+ }
+ *a = Nullch;
+ if (*PL_Argv[0] != '/') /* will execvp use PATH? */
+ TAINT_ENV(); /* testing IFS here is overkill, probably */
+ if (really && *(tmps = SvPV(really, PL_na)))
+ PerlProc_execvp(tmps,PL_Argv);
+ else
+ PerlProc_execvp(PL_Argv[0],PL_Argv);
+ if (PL_dowarn)
+ warn("Can't exec \"%s\": %s", PL_Argv[0], Strerror(errno));
+ }
+ do_execfree();
+ return FALSE;
+}
+
+void
+do_execfree(void)
+{
+ if (PL_Argv) {
+ Safefree(PL_Argv);
+ PL_Argv = Null(char **);
+ }
+ if (PL_Cmd) {
+ Safefree(PL_Cmd);
+ PL_Cmd = Nullch;
+ }
+}
+
+#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP)
+
+bool
+do_exec(char *cmd)
+{
+ register char **a;
+ register char *s;
+ char flags[10];
+
+ while (*cmd && isSPACE(*cmd))
+ cmd++;
+
+ /* save an extra exec if possible */
+
+#ifdef CSH
+ if (strnEQ(cmd,PL_cshname,PL_cshlen) && strnEQ(cmd+PL_cshlen," -c",3)) {
+ strcpy(flags,"-c");
+ s = cmd+PL_cshlen+3;
+ if (*s == 'f') {
+ s++;
+ strcat(flags,"f");
+ }
+ if (*s == ' ')
+ s++;
+ if (*s++ == '\'') {
+ char *ncmd = s;
+
+ while (*s)
+ s++;
+ if (s[-1] == '\n')
+ *--s = '\0';
+ if (s[-1] == '\'') {
+ *--s = '\0';
+ PerlProc_execl(PL_cshname,"csh", flags,ncmd,(char*)0);
+ *s = '\'';
+ return FALSE;
+ }
+ }
+ }
+#endif /* CSH */
+
+ /* see if there are shell metacharacters in it */
+
+ if (*cmd == '.' && isSPACE(cmd[1]))
+ goto doshell;
+
+ if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
+ goto doshell;
+
+ for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
+ if (*s == '=')
+ goto doshell;
+
+ for (s = cmd; *s; s++) {
+ if (*s != ' ' && !isALPHA(*s) && strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
+ if (*s == '\n' && !s[1]) {
+ *s = '\0';
+ break;
+ }
+ doshell:
+ PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
+ return FALSE;
+ }
+ }
+
+ New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
+ PL_Cmd = savepvn(cmd, s-cmd);
+ a = PL_Argv;
+ for (s = PL_Cmd; *s;) {
+ while (*s && isSPACE(*s)) s++;
+ if (*s)
+ *(a++) = s;
+ while (*s && !isSPACE(*s)) s++;
+ if (*s)
+ *s++ = '\0';
+ }
+ *a = Nullch;
+ if (PL_Argv[0]) {
+ PerlProc_execvp(PL_Argv[0],PL_Argv);
+ if (errno == ENOEXEC) { /* for system V NIH syndrome */
+ do_execfree();
+ goto doshell;
+ }
+ if (PL_dowarn)
+ warn("Can't exec \"%s\": %s", PL_Argv[0], Strerror(errno));
+ }
+ do_execfree();
+ return FALSE;
+}
+
+#endif /* OS2 || WIN32 */
+
+I32
+apply(I32 type, register SV **mark, register SV **sp)
+{
+ dTHR;
+ register I32 val;
+ register I32 val2;
+ register I32 tot = 0;
+ char *what;
+ char *s;
+ SV **oldmark = mark;
+
+#define APPLY_TAINT_PROPER() \
+ STMT_START { \
+ if (PL_tainting && PL_tainted) { goto taint_proper_label; } \
+ } STMT_END
+
+ /* This is a first heuristic; it doesn't catch tainting magic. */
+ if (PL_tainting) {
+ while (++mark <= sp) {
+ if (SvTAINTED(*mark)) {
+ TAINT;
+ break;
+ }
+ }
+ mark = oldmark;
+ }
+ switch (type) {
+ case OP_CHMOD:
+ what = "chmod";
+ APPLY_TAINT_PROPER();
+ if (++mark <= sp) {
+ val = SvIVx(*mark);
+ APPLY_TAINT_PROPER();
+ tot = sp - mark;
+ while (++mark <= sp) {
+ char *name = SvPVx(*mark, PL_na);
+ APPLY_TAINT_PROPER();
+ if (PerlLIO_chmod(name, val))
+ tot--;
+ }
+ }
+ break;
+#ifdef HAS_CHOWN
+ case OP_CHOWN:
+ what = "chown";
+ APPLY_TAINT_PROPER();
+ if (sp - mark > 2) {
+ val = SvIVx(*++mark);
+ val2 = SvIVx(*++mark);
+ APPLY_TAINT_PROPER();
+ tot = sp - mark;
+ while (++mark <= sp) {
+ char *name = SvPVx(*mark, PL_na);
+ APPLY_TAINT_PROPER();
+ if (PerlLIO_chown(name, val, val2))
+ tot--;
+ }
+ }
+ break;
+#endif
+/*
+XXX Should we make lchown() directly available from perl?
+For now, we'll let Configure test for HAS_LCHOWN, but do
+nothing in the core.
+ --AD 5/1998
+*/
+#ifdef HAS_KILL
+ case OP_KILL:
+ what = "kill";
+ APPLY_TAINT_PROPER();
+ if (mark == sp)
+ break;
+ s = SvPVx(*++mark, PL_na);
+ if (isUPPER(*s)) {
+ if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
+ s += 3;
+ if (!(val = whichsig(s)))
+ croak("Unrecognized signal name \"%s\"",s);
+ }
+ else
+ val = SvIVx(*mark);
+ APPLY_TAINT_PROPER();
+ tot = sp - mark;
+#ifdef VMS
+ /* kill() doesn't do process groups (job trees?) under VMS */
+ if (val < 0) val = -val;
+ if (val == SIGKILL) {
+# include <starlet.h>
+ /* Use native sys$delprc() to insure that target process is
+ * deleted; supervisor-mode images don't pay attention to
+ * CRTL's emulation of Unix-style signals and kill()
+ */
+ while (++mark <= sp) {
+ I32 proc = SvIVx(*mark);
+ register unsigned long int __vmssts;
+ APPLY_TAINT_PROPER();
+ if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
+ tot--;
+ switch (__vmssts) {
+ case SS$_NONEXPR:
+ case SS$_NOSUCHNODE:
+ SETERRNO(ESRCH,__vmssts);
+ break;
+ case SS$_NOPRIV:
+ SETERRNO(EPERM,__vmssts);
+ break;
+ default:
+ SETERRNO(EVMSERR,__vmssts);
+ }
+ }
+ }
+ break;
+ }
+#endif
+ if (val < 0) {
+ val = -val;
+ while (++mark <= sp) {
+ I32 proc = SvIVx(*mark);
+ APPLY_TAINT_PROPER();
+#ifdef HAS_KILLPG
+ if (PerlProc_killpg(proc,val)) /* BSD */
+#else
+ if (PerlProc_kill(-proc,val)) /* SYSV */
+#endif
+ tot--;
+ }
+ }
+ else {
+ while (++mark <= sp) {
+ I32 proc = SvIVx(*mark);
+ APPLY_TAINT_PROPER();
+ if (PerlProc_kill(proc, val))
+ tot--;
+ }
+ }
+ break;
+#endif
+ case OP_UNLINK:
+ what = "unlink";
+ APPLY_TAINT_PROPER();
+ tot = sp - mark;
+ while (++mark <= sp) {
+ s = SvPVx(*mark, PL_na);
+ APPLY_TAINT_PROPER();
+ if (PL_euid || PL_unsafe) {
+ if (UNLINK(s))
+ tot--;
+ }
+ else { /* don't let root wipe out directories without -U */
+#ifdef HAS_LSTAT
+ if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
+#else
+ if (PerlLIO_stat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
+#endif
+ tot--;
+ else {
+ if (UNLINK(s))
+ tot--;
+ }
+ }
+ }
+ break;
+#ifdef HAS_UTIME
+ case OP_UTIME:
+ what = "utime";
+ APPLY_TAINT_PROPER();
+ if (sp - mark > 2) {
+#if defined(I_UTIME) || defined(VMS)
+ struct utimbuf utbuf;
+#else
+ struct {
+ long actime;
+ long modtime;
+ } utbuf;
+#endif
+
+ Zero(&utbuf, sizeof utbuf, char);
+#ifdef BIG_TIME
+ utbuf.actime = (Time_t)SvNVx(*++mark); /* time accessed */
+ utbuf.modtime = (Time_t)SvNVx(*++mark); /* time modified */
+#else
+ utbuf.actime = SvIVx(*++mark); /* time accessed */
+ utbuf.modtime = SvIVx(*++mark); /* time modified */
+#endif
+ APPLY_TAINT_PROPER();
+ tot = sp - mark;
+ while (++mark <= sp) {
+ char *name = SvPVx(*mark, PL_na);
+ APPLY_TAINT_PROPER();
+ if (PerlLIO_utime(name, &utbuf))
+ tot--;
+ }
+ }
+ else
+ tot = 0;
+ break;
+#endif
+ }
+ return tot;
+
+ taint_proper_label:
+ TAINT_PROPER(what);
+ return 0; /* this should never happen */
+
+#undef APPLY_TAINT_PROPER
+}
+
+/* Do the permissions allow some operation? Assumes statcache already set. */
+#ifndef VMS /* VMS' cando is in vms.c */
+I32
+cando(I32 bit, I32 effective, register struct stat *statbufp)
+{
+#ifdef DOSISH
+ /* [Comments and code from Len Reed]
+ * MS-DOS "user" is similar to UNIX's "superuser," but can't write
+ * to write-protected files. The execute permission bit is set
+ * by the Miscrosoft C library stat() function for the following:
+ * .exe files
+ * .com files
+ * .bat files
+ * directories
+ * All files and directories are readable.
+ * Directories and special files, e.g. "CON", cannot be
+ * write-protected.
+ * [Comment by Tom Dinger -- a directory can have the write-protect
+ * bit set in the file system, but DOS permits changes to
+ * the directory anyway. In addition, all bets are off
+ * here for networked software, such as Novell and
+ * Sun's PC-NFS.]
+ */
+
+ /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
+ * too so it will actually look into the files for magic numbers
+ */
+ return (bit & statbufp->st_mode) ? TRUE : FALSE;
+
+#else /* ! DOSISH */
+ if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
+ if (bit == S_IXUSR) {
+ if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
+ return TRUE;
+ }
+ else
+ return TRUE; /* root reads and writes anything */
+ return FALSE;
+ }
+ if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
+ if (statbufp->st_mode & bit)
+ return TRUE; /* ok as "user" */
+ }
+ else if (ingroup((I32)statbufp->st_gid,effective)) {
+ if (statbufp->st_mode & bit >> 3)
+ return TRUE; /* ok as "group" */
+ }
+ else if (statbufp->st_mode & bit >> 6)
+ return TRUE; /* ok as "other" */
+ return FALSE;
+#endif /* ! DOSISH */
+}
+#endif /* ! VMS */
+
+I32
+ingroup(I32 testgid, I32 effective)
+{
+ if (testgid == (effective ? PL_egid : PL_gid))
+ return TRUE;
+#ifdef HAS_GETGROUPS
+#ifndef NGROUPS
+#define NGROUPS 32
+#endif
+ {
+ Groups_t gary[NGROUPS];
+ I32 anum;
+
+ anum = getgroups(NGROUPS,gary);
+ while (--anum >= 0)
+ if (gary[anum] == testgid)
+ return TRUE;
+ }
+#endif
+ return FALSE;
+}
+
+#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
+
+I32
+do_ipcget(I32 optype, SV **mark, SV **sp)
+{
+ dTHR;
+ key_t key;
+ I32 n, flags;
+
+ key = (key_t)SvNVx(*++mark);
+ n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
+ flags = SvIVx(*++mark);
+ SETERRNO(0,0);
+ switch (optype)
+ {
+#ifdef HAS_MSG
+ case OP_MSGGET:
+ return msgget(key, flags);
+#endif
+#ifdef HAS_SEM
+ case OP_SEMGET:
+ return semget(key, n, flags);
+#endif
+#ifdef HAS_SHM
+ case OP_SHMGET:
+ return shmget(key, n, flags);
+#endif
+#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
+ default:
+ croak("%s not implemented", op_desc[optype]);
+#endif
+ }
+ return -1; /* should never happen */
+}
+
+I32
+do_ipcctl(I32 optype, SV **mark, SV **sp)
+{
+ dTHR;
+ SV *astr;
+ char *a;
+ I32 id, n, cmd, infosize, getinfo;
+ I32 ret = -1;
+
+ id = SvIVx(*++mark);
+ n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
+ cmd = SvIVx(*++mark);
+ astr = *++mark;
+ infosize = 0;
+ getinfo = (cmd == IPC_STAT);
+
+ switch (optype)
+ {
+#ifdef HAS_MSG
+ case OP_MSGCTL:
+ if (cmd == IPC_STAT || cmd == IPC_SET)
+ infosize = sizeof(struct msqid_ds);
+ break;
+#endif
+#ifdef HAS_SHM
+ case OP_SHMCTL:
+ if (cmd == IPC_STAT || cmd == IPC_SET)
+ infosize = sizeof(struct shmid_ds);
+ break;
+#endif
+#ifdef HAS_SEM
+ case OP_SEMCTL:
+ if (cmd == IPC_STAT || cmd == IPC_SET)
+ infosize = sizeof(struct semid_ds);
+ else if (cmd == GETALL || cmd == SETALL)
+ {
+ struct semid_ds semds;
+ union semun semun;
+
+ semun.buf = &semds;
+ getinfo = (cmd == GETALL);
+ if (Semctl(id, 0, IPC_STAT, semun) == -1)
+ return -1;
+ infosize = semds.sem_nsems * sizeof(short);
+ /* "short" is technically wrong but much more portable
+ than guessing about u_?short(_t)? */
+ }
+ break;
+#endif
+#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
+ default:
+ croak("%s not implemented", op_desc[optype]);
+#endif
+ }
+
+ if (infosize)
+ {
+ STRLEN len;
+ if (getinfo)
+ {
+ SvPV_force(astr, len);
+ a = SvGROW(astr, infosize+1);
+ }
+ else
+ {
+ a = SvPV(astr, len);
+ if (len != infosize)
+ croak("Bad arg length for %s, is %lu, should be %ld",
+ op_desc[optype], (unsigned long)len, (long)infosize);
+ }
+ }
+ else
+ {
+ IV i = SvIV(astr);
+ a = (char *)i; /* ouch */
+ }
+ SETERRNO(0,0);
+ switch (optype)
+ {
+#ifdef HAS_MSG
+ case OP_MSGCTL:
+ ret = msgctl(id, cmd, (struct msqid_ds *)a);
+ break;
+#endif
+#ifdef HAS_SEM
+ case OP_SEMCTL: {
+ union semun unsemds;
+
+ unsemds.buf = (struct semid_ds *)a;
+ ret = Semctl(id, n, cmd, unsemds);
+ }
+ break;
+#endif
+#ifdef HAS_SHM
+ case OP_SHMCTL:
+ ret = shmctl(id, cmd, (struct shmid_ds *)a);
+ break;
+#endif
+ }
+ if (getinfo && ret >= 0) {
+ SvCUR_set(astr, infosize);
+ *SvEND(astr) = '\0';
+ SvSETMAGIC(astr);
+ }
+ return ret;
+}
+
+I32
+do_msgsnd(SV **mark, SV **sp)
+{
+#ifdef HAS_MSG
+ dTHR;
+ SV *mstr;
+ char *mbuf;
+ I32 id, msize, flags;
+ STRLEN len;
+
+ id = SvIVx(*++mark);
+ mstr = *++mark;
+ flags = SvIVx(*++mark);
+ mbuf = SvPV(mstr, len);
+ if ((msize = len - sizeof(long)) < 0)
+ croak("Arg too short for msgsnd");
+ SETERRNO(0,0);
+ return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
+#else
+ croak("msgsnd not implemented");
+#endif
+}
+
+I32
+do_msgrcv(SV **mark, SV **sp)
+{
+#ifdef HAS_MSG
+ dTHR;
+ SV *mstr;
+ char *mbuf;
+ long mtype;
+ I32 id, msize, flags, ret;
+ STRLEN len;
+
+ id = SvIVx(*++mark);
+ mstr = *++mark;
+ msize = SvIVx(*++mark);
+ mtype = (long)SvIVx(*++mark);
+ flags = SvIVx(*++mark);
+ if (SvTHINKFIRST(mstr)) {
+ if (SvREADONLY(mstr))
+ croak("Can't msgrcv to readonly var");
+ if (SvROK(mstr))
+ sv_unref(mstr);
+ }
+ SvPV_force(mstr, len);
+ mbuf = SvGROW(mstr, sizeof(long)+msize+1);
+
+ SETERRNO(0,0);
+ ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
+ if (ret >= 0) {
+ SvCUR_set(mstr, sizeof(long)+ret);
+ *SvEND(mstr) = '\0';
+ }
+ return ret;
+#else
+ croak("msgrcv not implemented");
+#endif
+}
+
+I32
+do_semop(SV **mark, SV **sp)
+{
+#ifdef HAS_SEM
+ dTHR;
+ SV *opstr;
+ char *opbuf;
+ I32 id;
+ STRLEN opsize;
+
+ id = SvIVx(*++mark);
+ opstr = *++mark;
+ opbuf = SvPV(opstr, opsize);
+ if (opsize < sizeof(struct sembuf)
+ || (opsize % sizeof(struct sembuf)) != 0) {
+ SETERRNO(EINVAL,LIB$_INVARG);
+ return -1;
+ }
+ SETERRNO(0,0);
+ return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
+#else
+ croak("semop not implemented");
+#endif
+}
+
+I32
+do_shmio(I32 optype, SV **mark, SV **sp)
+{
+#ifdef HAS_SHM
+ dTHR;
+ SV *mstr;
+ char *mbuf, *shm;
+ I32 id, mpos, msize;
+ STRLEN len;
+ struct shmid_ds shmds;
+
+ id = SvIVx(*++mark);
+ mstr = *++mark;
+ mpos = SvIVx(*++mark);
+ msize = SvIVx(*++mark);
+ SETERRNO(0,0);
+ if (shmctl(id, IPC_STAT, &shmds) == -1)
+ return -1;
+ if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
+ SETERRNO(EFAULT,SS$_ACCVIO); /* can't do as caller requested */
+ return -1;
+ }
+ shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
+ if (shm == (char *)-1) /* I hate System V IPC, I really do */
+ return -1;
+ if (optype == OP_SHMREAD) {
+ SvPV_force(mstr, len);
+ mbuf = SvGROW(mstr, msize+1);
+
+ Copy(shm + mpos, mbuf, msize, char);
+ SvCUR_set(mstr, msize);
+ *SvEND(mstr) = '\0';
+ SvSETMAGIC(mstr);
+ }
+ else {
+ I32 n;
+
+ mbuf = SvPV(mstr, len);
+ if ((n = len) > msize)
+ n = msize;
+ Copy(mbuf, shm + mpos, n, char);
+ if (n < msize)
+ memzero(shm + mpos + n, msize - n);
+ }
+ return shmdt(shm);
+#else
+ croak("shm I/O not implemented");
+#endif
+}
+
+#endif /* SYSV IPC */
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-01 23:26:58 +0000