1671 lines
36 KiB
C
1671 lines
36 KiB
C
/* doio.c
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*
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* Copyright (c) 1991-1997, Larry Wall
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Artistic License, as specified in the README file.
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*
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*/
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/*
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* "Far below them they saw the white waters pour into a foaming bowl, and
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* then swirl darkly about a deep oval basin in the rocks, until they found
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* their way out again through a narrow gate, and flowed away, fuming and
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* chattering, into calmer and more level reaches."
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*/
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#include "EXTERN.h"
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#include "perl.h"
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#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
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#include <sys/ipc.h>
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#ifdef HAS_MSG
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#include <sys/msg.h>
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#endif
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#ifdef HAS_SEM
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#include <sys/sem.h>
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#endif
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#ifdef HAS_SHM
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#include <sys/shm.h>
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# ifndef HAS_SHMAT_PROTOTYPE
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extern Shmat_t shmat _((int, char *, int));
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# endif
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#endif
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#endif
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#ifdef I_UTIME
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# if defined(_MSC_VER) || defined(__MINGW32__)
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# include <sys/utime.h>
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# else
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# include <utime.h>
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# endif
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#endif
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#ifdef I_FCNTL
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#include <fcntl.h>
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#endif
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#ifdef I_SYS_FILE
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#include <sys/file.h>
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#endif
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#ifdef O_EXCL
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# define OPEN_EXCL O_EXCL
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#else
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# define OPEN_EXCL 0
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#endif
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#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
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#include <signal.h>
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#endif
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/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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#ifdef I_UNISTD
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# include <unistd.h>
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#endif
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#if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */
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# include <sys/socket.h>
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# include <netdb.h>
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# ifndef ENOTSOCK
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# ifdef I_NET_ERRNO
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# include <net/errno.h>
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# endif
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# endif
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#endif
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/* Put this after #includes because <unistd.h> defines _XOPEN_*. */
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#ifndef Sock_size_t
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# if _XOPEN_VERSION >= 5 || defined(_XOPEN_SOURCE_EXTENDED) || defined(__GLIBC__)
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# define Sock_size_t Size_t
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# else
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# define Sock_size_t int
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# endif
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#endif
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bool
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do_open(GV *gv, register char *name, I32 len, int as_raw, int rawmode, int rawperm, PerlIO *supplied_fp)
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{
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register IO *io = GvIOn(gv);
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PerlIO *saveifp = Nullfp;
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PerlIO *saveofp = Nullfp;
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char savetype = ' ';
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int writing = 0;
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PerlIO *fp;
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int fd;
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int result;
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bool was_fdopen = FALSE;
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PL_forkprocess = 1; /* assume true if no fork */
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if (IoIFP(io)) {
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fd = PerlIO_fileno(IoIFP(io));
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if (IoTYPE(io) == '-')
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result = 0;
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else if (fd <= PL_maxsysfd) {
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saveifp = IoIFP(io);
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saveofp = IoOFP(io);
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savetype = IoTYPE(io);
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result = 0;
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}
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else if (IoTYPE(io) == '|')
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result = PerlProc_pclose(IoIFP(io));
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else if (IoIFP(io) != IoOFP(io)) {
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if (IoOFP(io)) {
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result = PerlIO_close(IoOFP(io));
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PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
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}
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else
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result = PerlIO_close(IoIFP(io));
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}
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else
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result = PerlIO_close(IoIFP(io));
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if (result == EOF && fd > PL_maxsysfd)
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PerlIO_printf(PerlIO_stderr(), "Warning: unable to close filehandle %s properly.\n",
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GvENAME(gv));
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IoOFP(io) = IoIFP(io) = Nullfp;
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}
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if (as_raw) {
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#ifndef O_ACCMODE
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#define O_ACCMODE 3 /* Assume traditional implementation */
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#endif
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switch (result = rawmode & O_ACCMODE) {
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case O_RDONLY:
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IoTYPE(io) = '<';
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break;
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case O_WRONLY:
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IoTYPE(io) = '>';
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break;
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case O_RDWR:
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default:
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IoTYPE(io) = '+';
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break;
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}
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writing = (result > 0);
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fd = PerlLIO_open3(name, rawmode, rawperm);
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if (fd == -1)
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fp = NULL;
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else {
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char *fpmode;
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if (result == O_RDONLY)
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fpmode = "r";
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#ifdef O_APPEND
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else if (rawmode & O_APPEND)
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fpmode = (result == O_WRONLY) ? "a" : "a+";
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#endif
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else
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fpmode = (result == O_WRONLY) ? "w" : "r+";
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fp = PerlIO_fdopen(fd, fpmode);
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if (!fp)
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PerlLIO_close(fd);
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}
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}
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else {
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char *myname;
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char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
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int dodup;
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myname = savepvn(name, len);
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SAVEFREEPV(myname);
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name = myname;
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while (len && isSPACE(name[len-1]))
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name[--len] = '\0';
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mode[0] = mode[1] = mode[2] = '\0';
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IoTYPE(io) = *name;
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if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */
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mode[1] = *name++;
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--len;
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writing = 1;
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}
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if (*name == '|') {
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/*SUPPRESS 530*/
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for (name++; isSPACE(*name); name++) ;
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if (strNE(name,"-"))
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TAINT_ENV();
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TAINT_PROPER("piped open");
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if (name[strlen(name)-1] == '|') {
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name[strlen(name)-1] = '\0' ;
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if (PL_dowarn)
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warn("Can't do bidirectional pipe");
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}
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fp = PerlProc_popen(name,"w");
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writing = 1;
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}
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else if (*name == '>') {
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TAINT_PROPER("open");
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name++;
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if (*name == '>') {
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mode[0] = IoTYPE(io) = 'a';
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name++;
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}
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else
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mode[0] = 'w';
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writing = 1;
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if (*name == '&') {
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duplicity:
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dodup = 1;
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name++;
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if (*name == '=') {
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dodup = 0;
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name++;
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}
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if (!*name && supplied_fp)
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fp = supplied_fp;
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else {
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/*SUPPRESS 530*/
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for (; isSPACE(*name); name++) ;
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if (isDIGIT(*name))
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fd = atoi(name);
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else {
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IO* thatio;
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gv = gv_fetchpv(name,FALSE,SVt_PVIO);
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thatio = GvIO(gv);
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if (!thatio) {
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#ifdef EINVAL
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SETERRNO(EINVAL,SS$_IVCHAN);
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#endif
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goto say_false;
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}
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if (IoIFP(thatio)) {
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fd = PerlIO_fileno(IoIFP(thatio));
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if (IoTYPE(thatio) == 's')
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IoTYPE(io) = 's';
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}
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else
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fd = -1;
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}
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if (dodup)
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fd = PerlLIO_dup(fd);
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else
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was_fdopen = TRUE;
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if (!(fp = PerlIO_fdopen(fd,mode))) {
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if (dodup)
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PerlLIO_close(fd);
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}
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}
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}
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else {
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/*SUPPRESS 530*/
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for (; isSPACE(*name); name++) ;
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if (strEQ(name,"-")) {
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fp = PerlIO_stdout();
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IoTYPE(io) = '-';
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}
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else {
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fp = PerlIO_open(name,mode);
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}
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}
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}
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else if (*name == '<') {
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/*SUPPRESS 530*/
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for (name++; isSPACE(*name); name++) ;
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mode[0] = 'r';
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if (*name == '&')
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goto duplicity;
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if (strEQ(name,"-")) {
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fp = PerlIO_stdin();
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IoTYPE(io) = '-';
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}
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else
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fp = PerlIO_open(name,mode);
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}
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else if (len > 1 && name[len-1] == '|') {
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name[--len] = '\0';
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while (len && isSPACE(name[len-1]))
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name[--len] = '\0';
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/*SUPPRESS 530*/
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for (; isSPACE(*name); name++) ;
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if (strNE(name,"-"))
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TAINT_ENV();
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TAINT_PROPER("piped open");
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fp = PerlProc_popen(name,"r");
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IoTYPE(io) = '|';
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}
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else {
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IoTYPE(io) = '<';
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/*SUPPRESS 530*/
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for (; isSPACE(*name); name++) ;
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if (strEQ(name,"-")) {
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fp = PerlIO_stdin();
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IoTYPE(io) = '-';
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}
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else
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fp = PerlIO_open(name,"r");
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}
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}
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if (!fp) {
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if (PL_dowarn && IoTYPE(io) == '<' && strchr(name, '\n'))
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warn(warn_nl, "open");
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goto say_false;
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}
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if (IoTYPE(io) &&
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IoTYPE(io) != '|' && IoTYPE(io) != '-') {
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dTHR;
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if (PerlLIO_fstat(PerlIO_fileno(fp),&PL_statbuf) < 0) {
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(void)PerlIO_close(fp);
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goto say_false;
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}
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if (S_ISSOCK(PL_statbuf.st_mode))
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IoTYPE(io) = 's'; /* in case a socket was passed in to us */
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#ifdef HAS_SOCKET
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else if (
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#ifdef S_IFMT
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!(PL_statbuf.st_mode & S_IFMT)
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#else
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!PL_statbuf.st_mode
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#endif
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) {
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char tmpbuf[256];
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Sock_size_t buflen = sizeof tmpbuf;
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if (PerlSock_getsockname(PerlIO_fileno(fp), (struct sockaddr *)tmpbuf,
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&buflen) >= 0
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|| errno != ENOTSOCK)
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IoTYPE(io) = 's'; /* some OS's return 0 on fstat()ed socket */
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/* but some return 0 for streams too, sigh */
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}
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#endif
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}
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if (saveifp) { /* must use old fp? */
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fd = PerlIO_fileno(saveifp);
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if (saveofp) {
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PerlIO_flush(saveofp); /* emulate PerlIO_close() */
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if (saveofp != saveifp) { /* was a socket? */
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PerlIO_close(saveofp);
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if (fd > 2)
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Safefree(saveofp);
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}
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}
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if (fd != PerlIO_fileno(fp)) {
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int pid;
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SV *sv;
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PerlLIO_dup2(PerlIO_fileno(fp), fd);
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sv = *av_fetch(PL_fdpid,PerlIO_fileno(fp),TRUE);
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(void)SvUPGRADE(sv, SVt_IV);
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pid = SvIVX(sv);
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SvIVX(sv) = 0;
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sv = *av_fetch(PL_fdpid,fd,TRUE);
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(void)SvUPGRADE(sv, SVt_IV);
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SvIVX(sv) = pid;
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if (!was_fdopen)
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PerlIO_close(fp);
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}
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fp = saveifp;
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PerlIO_clearerr(fp);
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}
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#if defined(HAS_FCNTL) && defined(F_SETFD)
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fd = PerlIO_fileno(fp);
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fcntl(fd,F_SETFD,fd > PL_maxsysfd);
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#endif
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IoIFP(io) = fp;
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if (writing) {
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dTHR;
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if (IoTYPE(io) == 's'
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|| (IoTYPE(io) == '>' && S_ISCHR(PL_statbuf.st_mode)) ) {
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if (!(IoOFP(io) = PerlIO_fdopen(PerlIO_fileno(fp),"w"))) {
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PerlIO_close(fp);
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IoIFP(io) = Nullfp;
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goto say_false;
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}
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}
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else
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IoOFP(io) = fp;
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}
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return TRUE;
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say_false:
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IoIFP(io) = saveifp;
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IoOFP(io) = saveofp;
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IoTYPE(io) = savetype;
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return FALSE;
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}
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PerlIO *
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nextargv(register GV *gv)
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{
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register SV *sv;
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#ifndef FLEXFILENAMES
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int filedev;
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int fileino;
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#endif
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int fileuid;
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int filegid;
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if (!PL_argvoutgv)
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PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
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if (PL_filemode & (S_ISUID|S_ISGID)) {
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PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
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#ifdef HAS_FCHMOD
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(void)fchmod(PL_lastfd,PL_filemode);
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#else
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(void)PerlLIO_chmod(PL_oldname,PL_filemode);
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#endif
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}
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PL_filemode = 0;
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while (av_len(GvAV(gv)) >= 0) {
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dTHR;
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STRLEN oldlen;
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sv = av_shift(GvAV(gv));
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SAVEFREESV(sv);
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sv_setsv(GvSV(gv),sv);
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SvSETMAGIC(GvSV(gv));
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PL_oldname = SvPVx(GvSV(gv), oldlen);
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if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
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if (PL_inplace) {
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TAINT_PROPER("inplace open");
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if (oldlen == 1 && *PL_oldname == '-') {
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setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
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return IoIFP(GvIOp(gv));
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}
|
|
#ifndef FLEXFILENAMES
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filedev = PL_statbuf.st_dev;
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fileino = PL_statbuf.st_ino;
|
|
#endif
|
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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 */
|
|
|