462 lines
8.9 KiB
Plaintext
462 lines
8.9 KiB
Plaintext
/*
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* Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
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* This program is free software; you can redistribute it and/or
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* modify it under the same terms as Perl itself.
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*/
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#define PERL_NO_GET_CONTEXT
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#include "EXTERN.h"
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#define PERLIO_NOT_STDIO 1
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#include "perl.h"
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#include "XSUB.h"
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#include "poll.h"
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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(I_FCNTL) || defined(HAS_FCNTL)
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# include <fcntl.h>
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#endif
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#ifdef PerlIO
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typedef int SysRet;
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typedef PerlIO * InputStream;
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typedef PerlIO * OutputStream;
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#else
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#define PERLIO_IS_STDIO 1
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typedef int SysRet;
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typedef FILE * InputStream;
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typedef FILE * OutputStream;
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#endif
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#define MY_start_subparse(fmt,flags) start_subparse(fmt,flags)
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#ifndef gv_stashpvn
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#define gv_stashpvn(str,len,flags) gv_stashpv(str,flags)
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#endif
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static int
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not_here(char *s)
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{
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croak("%s not implemented on this architecture", s);
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return -1;
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}
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#ifndef PerlIO
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#define PerlIO_fileno(f) fileno(f)
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#endif
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static int
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io_blocking(InputStream f, int block)
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{
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int RETVAL;
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if(!f) {
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errno = EBADF;
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return -1;
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}
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#if defined(HAS_FCNTL)
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RETVAL = fcntl(PerlIO_fileno(f), F_GETFL, 0);
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if (RETVAL >= 0) {
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int mode = RETVAL;
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#ifdef O_NONBLOCK
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/* POSIX style */
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#if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK
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/* Ooops has O_NDELAY too - make sure we don't
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* get SysV behaviour by mistake. */
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/* E.g. In UNICOS and UNICOS/mk a F_GETFL returns an O_NDELAY
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* after a successful F_SETFL of an O_NONBLOCK. */
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RETVAL = RETVAL & (O_NONBLOCK | O_NDELAY) ? 0 : 1;
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if (block >= 0) {
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if ((mode & O_NDELAY) || ((block == 0) && !(mode & O_NONBLOCK))) {
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int ret;
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mode = (mode & ~O_NDELAY) | O_NONBLOCK;
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ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
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if(ret < 0)
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RETVAL = ret;
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}
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else
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if ((mode & O_NDELAY) || ((block > 0) && (mode & O_NONBLOCK))) {
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int ret;
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mode &= ~(O_NONBLOCK | O_NDELAY);
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ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
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if(ret < 0)
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RETVAL = ret;
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}
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}
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#else
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/* Standard POSIX */
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RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;
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if ((block == 0) && !(mode & O_NONBLOCK)) {
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int ret;
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mode |= O_NONBLOCK;
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ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
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if(ret < 0)
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RETVAL = ret;
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}
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else if ((block > 0) && (mode & O_NONBLOCK)) {
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int ret;
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mode &= ~O_NONBLOCK;
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ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
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if(ret < 0)
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RETVAL = ret;
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}
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#endif
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#else
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/* Not POSIX - better have O_NDELAY or we can't cope.
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* for BSD-ish machines this is an acceptable alternative
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* for SysV we can't tell "would block" from EOF but that is
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* the way SysV is...
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*/
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RETVAL = RETVAL & O_NDELAY ? 0 : 1;
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if ((block == 0) && !(mode & O_NDELAY)) {
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int ret;
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mode |= O_NDELAY;
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ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
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if(ret < 0)
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RETVAL = ret;
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}
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else if ((block > 0) && (mode & O_NDELAY)) {
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int ret;
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mode &= ~O_NDELAY;
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ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
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if(ret < 0)
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RETVAL = ret;
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}
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#endif
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}
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return RETVAL;
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#else
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return -1;
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#endif
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}
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MODULE = IO PACKAGE = IO::Seekable PREFIX = f
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SV *
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fgetpos(handle)
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InputStream handle
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CODE:
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if (handle) {
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Fpos_t pos;
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#ifdef PerlIO
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PerlIO_getpos(handle, &pos);
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#else
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fgetpos(handle, &pos);
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#endif
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ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t)));
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}
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else {
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ST(0) = &PL_sv_undef;
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errno = EINVAL;
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}
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SysRet
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fsetpos(handle, pos)
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InputStream handle
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SV * pos
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CODE:
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char *p;
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STRLEN len;
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if (handle && (p = SvPV(pos,len)) && len == sizeof(Fpos_t))
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#ifdef PerlIO
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RETVAL = PerlIO_setpos(handle, (Fpos_t*)p);
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#else
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RETVAL = fsetpos(handle, (Fpos_t*)p);
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#endif
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else {
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RETVAL = -1;
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errno = EINVAL;
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}
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OUTPUT:
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RETVAL
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MODULE = IO PACKAGE = IO::File PREFIX = f
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SV *
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new_tmpfile(packname = "IO::File")
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char * packname
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PREINIT:
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OutputStream fp;
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GV *gv;
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CODE:
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#ifdef PerlIO
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fp = PerlIO_tmpfile();
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#else
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fp = tmpfile();
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#endif
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gv = (GV*)SvREFCNT_inc(newGVgen(packname));
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hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD);
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if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) {
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ST(0) = sv_2mortal(newRV((SV*)gv));
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sv_bless(ST(0), gv_stashpv(packname, TRUE));
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SvREFCNT_dec(gv); /* undo increment in newRV() */
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}
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else {
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ST(0) = &PL_sv_undef;
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SvREFCNT_dec(gv);
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}
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MODULE = IO PACKAGE = IO::Poll
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void
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_poll(timeout,...)
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int timeout;
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PPCODE:
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{
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#ifdef HAS_POLL
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int nfd = (items - 1) / 2;
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SV *tmpsv = NEWSV(999,nfd * sizeof(struct pollfd));
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struct pollfd *fds = (struct pollfd *)SvPVX(tmpsv);
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int i,j,ret;
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for(i=1, j=0 ; j < nfd ; j++) {
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fds[j].fd = SvIV(ST(i));
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i++;
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fds[j].events = SvIV(ST(i));
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i++;
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fds[j].revents = 0;
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}
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if((ret = poll(fds,nfd,timeout)) >= 0) {
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for(i=1, j=0 ; j < nfd ; j++) {
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sv_setiv(ST(i), fds[j].fd); i++;
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sv_setiv(ST(i), fds[j].revents); i++;
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}
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}
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SvREFCNT_dec(tmpsv);
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XSRETURN_IV(ret);
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#else
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not_here("IO::Poll::poll");
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#endif
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}
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MODULE = IO PACKAGE = IO::Handle PREFIX = io_
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void
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io_blocking(handle,blk=-1)
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InputStream handle
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int blk
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PROTOTYPE: $;$
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CODE:
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{
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int ret = io_blocking(handle, items == 1 ? -1 : blk ? 1 : 0);
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if(ret >= 0)
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XSRETURN_IV(ret);
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else
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XSRETURN_UNDEF;
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}
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MODULE = IO PACKAGE = IO::Handle PREFIX = f
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int
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ungetc(handle, c)
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InputStream handle
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int c
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CODE:
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if (handle)
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#ifdef PerlIO
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RETVAL = PerlIO_ungetc(handle, c);
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#else
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RETVAL = ungetc(c, handle);
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#endif
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else {
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RETVAL = -1;
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errno = EINVAL;
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}
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OUTPUT:
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RETVAL
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int
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ferror(handle)
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InputStream handle
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CODE:
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if (handle)
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#ifdef PerlIO
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RETVAL = PerlIO_error(handle);
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#else
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RETVAL = ferror(handle);
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#endif
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else {
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RETVAL = -1;
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errno = EINVAL;
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}
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OUTPUT:
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RETVAL
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int
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clearerr(handle)
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InputStream handle
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CODE:
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if (handle) {
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#ifdef PerlIO
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PerlIO_clearerr(handle);
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#else
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clearerr(handle);
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#endif
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RETVAL = 0;
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}
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else {
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RETVAL = -1;
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errno = EINVAL;
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}
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OUTPUT:
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RETVAL
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int
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untaint(handle)
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SV * handle
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CODE:
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#ifdef IOf_UNTAINT
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IO * io;
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io = sv_2io(handle);
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if (io) {
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IoFLAGS(io) |= IOf_UNTAINT;
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RETVAL = 0;
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}
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else {
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#endif
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RETVAL = -1;
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errno = EINVAL;
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#ifdef IOf_UNTAINT
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}
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#endif
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OUTPUT:
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RETVAL
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SysRet
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fflush(handle)
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OutputStream handle
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CODE:
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if (handle)
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#ifdef PerlIO
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RETVAL = PerlIO_flush(handle);
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#else
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RETVAL = Fflush(handle);
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#endif
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else {
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RETVAL = -1;
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errno = EINVAL;
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}
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OUTPUT:
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RETVAL
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void
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setbuf(handle, buf)
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OutputStream handle
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char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), BUFSIZ) : 0;
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CODE:
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if (handle)
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#ifdef PERLIO_IS_STDIO
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setbuf(handle, buf);
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#else
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not_here("IO::Handle::setbuf");
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#endif
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SysRet
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setvbuf(handle, buf, type, size)
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OutputStream handle
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char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
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int type
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int size
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CODE:
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#if defined(PERLIO_IS_STDIO) && defined(_IOFBF) && defined(HAS_SETVBUF)
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if (!handle) /* Try input stream. */
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handle = IoIFP(sv_2io(ST(0)));
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if (handle)
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RETVAL = setvbuf(handle, buf, type, size);
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else {
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RETVAL = -1;
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errno = EINVAL;
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}
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#else
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RETVAL = (SysRet) not_here("IO::Handle::setvbuf");
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#endif
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OUTPUT:
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RETVAL
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SysRet
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fsync(handle)
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OutputStream handle
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CODE:
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#ifdef HAS_FSYNC
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if(handle)
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RETVAL = fsync(PerlIO_fileno(handle));
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else {
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RETVAL = -1;
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errno = EINVAL;
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}
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#else
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RETVAL = (SysRet) not_here("IO::Handle::sync");
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#endif
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OUTPUT:
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RETVAL
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BOOT:
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{
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HV *stash;
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/*
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* constant subs for IO::Poll
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*/
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stash = gv_stashpvn("IO::Poll", 8, TRUE);
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#ifdef POLLIN
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newCONSTSUB(stash,"POLLIN",newSViv(POLLIN));
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#endif
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#ifdef POLLPRI
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newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI));
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#endif
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#ifdef POLLOUT
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newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT));
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#endif
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#ifdef POLLRDNORM
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newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM));
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#endif
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#ifdef POLLWRNORM
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newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM));
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#endif
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#ifdef POLLRDBAND
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newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND));
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#endif
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#ifdef POLLWRBAND
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newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND));
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#endif
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#ifdef POLLNORM
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newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM));
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#endif
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#ifdef POLLERR
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newCONSTSUB(stash,"POLLERR", newSViv(POLLERR));
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#endif
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#ifdef POLLHUP
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newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP));
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#endif
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#ifdef POLLNVAL
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newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL));
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#endif
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/*
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* constant subs for IO::Handle
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*/
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stash = gv_stashpvn("IO::Handle", 10, TRUE);
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#ifdef _IOFBF
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newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF));
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#endif
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#ifdef _IOLBF
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newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF));
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#endif
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#ifdef _IONBF
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newCONSTSUB(stash,"_IONBF", newSViv(_IONBF));
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#endif
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#ifdef SEEK_SET
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newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET));
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#endif
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#ifdef SEEK_CUR
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newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR));
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#endif
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#ifdef SEEK_END
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newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END));
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#endif
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}
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