[p5sagit/p5-mst-13.2.git] / ext / IO / IO.xs

/*
 * Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
 * This program is free software; you can redistribute it and/or
 * modify it under the same terms as Perl itself.
 */

#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#define PERLIO_NOT_STDIO 1
#include "perl.h"
#include "XSUB.h"
#include "poll.h"
#ifdef I_UNISTD
#  include <unistd.h>
#endif
#if defined(I_FCNTL) || defined(HAS_FCNTL)
#  include <fcntl.h>
#endif

#ifdef PerlIO
typedef int SysRet;
typedef PerlIO * InputStream;
typedef PerlIO * OutputStream;
#else
#define PERLIO_IS_STDIO 1
typedef int SysRet;
typedef FILE * InputStream;
typedef FILE * OutputStream;
#endif

#define MY_start_subparse(fmt,flags) start_subparse(fmt,flags)

#ifndef gv_stashpvn
#define gv_stashpvn(str,len,flags) gv_stashpv(str,flags)
#endif

static int
not_here(char *s)
{
    croak("%s not implemented on this architecture", s);
    return -1;
}


#ifndef PerlIO
#define PerlIO_fileno(f) fileno(f)
#endif

static int
io_blocking(InputStream f, int block)
{
    int RETVAL;
    if(!f) {
	errno = EBADF;
	return -1;
    }
#if defined(HAS_FCNTL)
    RETVAL = fcntl(PerlIO_fileno(f), F_GETFL, 0);
    if (RETVAL >= 0) {
	int mode = RETVAL;
#ifdef O_NONBLOCK
	/* POSIX style */ 
#if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK
	/* Ooops has O_NDELAY too - make sure we don't 
	 * get SysV behaviour by mistake. */

	/* E.g. In UNICOS and UNICOS/mk a F_GETFL returns an O_NDELAY
	 * after a successful F_SETFL of an O_NONBLOCK. */
	RETVAL = RETVAL & (O_NONBLOCK | O_NDELAY) ? 0 : 1;

	if (block >= 0) {
	    if ((mode & O_NDELAY) || ((block == 0) && !(mode & O_NONBLOCK))) {
	        int ret;
	        mode = (mode & ~O_NDELAY) | O_NONBLOCK;
	        ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	        if(ret < 0)
		    RETVAL = ret;
	    }
	    else
              if ((mode & O_NDELAY) || ((block > 0) && (mode & O_NONBLOCK))) {
	        int ret;
	        mode &= ~(O_NONBLOCK | O_NDELAY);
	        ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	        if(ret < 0)
		    RETVAL = ret;
              }
	}
#else
	/* Standard POSIX */ 
	RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;

	if ((block == 0) && !(mode & O_NONBLOCK)) {
	    int ret;
	    mode |= O_NONBLOCK;
	    ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	    if(ret < 0)
		RETVAL = ret;
	 }
	else if ((block > 0) && (mode & O_NONBLOCK)) {
	    int ret;
	    mode &= ~O_NONBLOCK;
	    ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	    if(ret < 0)
		RETVAL = ret;
	 }
#endif 
#else
	/* Not POSIX - better have O_NDELAY or we can't cope.
	 * for BSD-ish machines this is an acceptable alternative
	 * for SysV we can't tell "would block" from EOF but that is 
	 * the way SysV is...
	 */
	RETVAL = RETVAL & O_NDELAY ? 0 : 1;

	if ((block == 0) && !(mode & O_NDELAY)) {
	    int ret;
	    mode |= O_NDELAY;
	    ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	    if(ret < 0)
		RETVAL = ret;
	 }
	else if ((block > 0) && (mode & O_NDELAY)) {
	    int ret;
	    mode &= ~O_NDELAY;
	    ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	    if(ret < 0)
		RETVAL = ret;
	 }
#endif
    }
    return RETVAL;
#else
 return -1;
#endif
}

MODULE = IO	PACKAGE = IO::Seekable	PREFIX = f

SV *
fgetpos(handle)
	InputStream	handle
    CODE:
	if (handle) {
	    Fpos_t pos;
#ifdef PerlIO
	    PerlIO_getpos(handle, &pos);
#else
	    fgetpos(handle, &pos);
#endif
	    ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t)));
	}
	else {
	    ST(0) = &PL_sv_undef;
	    errno = EINVAL;
	}

SysRet
fsetpos(handle, pos)
	InputStream	handle
	SV *		pos
    CODE:
        char *p;
	STRLEN len;
	if (handle && (p = SvPV(pos,len)) && len == sizeof(Fpos_t))
#ifdef PerlIO
	    RETVAL = PerlIO_setpos(handle, (Fpos_t*)p);
#else
	    RETVAL = fsetpos(handle, (Fpos_t*)p);
#endif
	else {
	    RETVAL = -1;
	    errno = EINVAL;
	}
    OUTPUT:
	RETVAL

MODULE = IO	PACKAGE = IO::File	PREFIX = f

SV *
new_tmpfile(packname = "IO::File")
    char *		packname
    PREINIT:
	OutputStream fp;
	GV *gv;
    CODE:
#ifdef PerlIO
	fp = PerlIO_tmpfile();
#else
	fp = tmpfile();
#endif
	gv = (GV*)SvREFCNT_inc(newGVgen(packname));
	hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD);
	if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) {
	    ST(0) = sv_2mortal(newRV((SV*)gv));
	    sv_bless(ST(0), gv_stashpv(packname, TRUE));
	    SvREFCNT_dec(gv);   /* undo increment in newRV() */
	}
	else {
	    ST(0) = &PL_sv_undef;
	    SvREFCNT_dec(gv);
	}

MODULE = IO	PACKAGE = IO::Poll

void   
_poll(timeout,...)
	int timeout;
PPCODE:
{
#ifdef HAS_POLL
    int nfd = (items - 1) / 2;
    SV *tmpsv = NEWSV(999,nfd * sizeof(struct pollfd));
    struct pollfd *fds = (struct pollfd *)SvPVX(tmpsv);
    int i,j,ret;
    for(i=1, j=0  ; j < nfd ; j++) {
	fds[j].fd = SvIV(ST(i));
	i++;
	fds[j].events = SvIV(ST(i));
	i++;
	fds[j].revents = 0;
    }
    if((ret = poll(fds,nfd,timeout)) >= 0) {
	for(i=1, j=0 ; j < nfd ; j++) {
	    sv_setiv(ST(i), fds[j].fd); i++;
	    sv_setiv(ST(i), fds[j].revents); i++;
	}
    }
    SvREFCNT_dec(tmpsv);
    XSRETURN_IV(ret);
#else
	not_here("IO::Poll::poll");
#endif
}

MODULE = IO	PACKAGE = IO::Handle	PREFIX = io_

void
io_blocking(handle,blk=-1)
	InputStream	handle
	int		blk
PROTOTYPE: $;$
CODE:
{
    int ret = io_blocking(handle, items == 1 ? -1 : blk ? 1 : 0);
    if(ret >= 0)
	XSRETURN_IV(ret);
    else
	XSRETURN_UNDEF;
}

MODULE = IO	PACKAGE = IO::Handle	PREFIX = f


int
ungetc(handle, c)
	InputStream	handle
	int		c
    CODE:
	if (handle)
#ifdef PerlIO
	    RETVAL = PerlIO_ungetc(handle, c);
#else
	    RETVAL = ungetc(c, handle);
#endif
	else {
	    RETVAL = -1;
	    errno = EINVAL;
	}
    OUTPUT:
	RETVAL

int
ferror(handle)
	InputStream	handle
    CODE:
	if (handle)
#ifdef PerlIO
	    RETVAL = PerlIO_error(handle);
#else
	    RETVAL = ferror(handle);
#endif
	else {
	    RETVAL = -1;
	    errno = EINVAL;
	}
    OUTPUT:
	RETVAL

int
clearerr(handle)
	InputStream	handle
    CODE:
	if (handle) {
#ifdef PerlIO
	    PerlIO_clearerr(handle);
#else
	    clearerr(handle);
#endif
	    RETVAL = 0;
	}
	else {
	    RETVAL = -1;
	    errno = EINVAL;
	}
    OUTPUT:
	RETVAL

int
untaint(handle)
       SV *	handle
    CODE:
#ifdef IOf_UNTAINT
	IO * io;
	io = sv_2io(handle);
	if (io) {
	    IoFLAGS(io) |= IOf_UNTAINT;
	    RETVAL = 0;
	}
        else {
#endif
	    RETVAL = -1;
	    errno = EINVAL;
#ifdef IOf_UNTAINT
	}
#endif
    OUTPUT:
	RETVAL

SysRet
fflush(handle)
	OutputStream	handle
    CODE:
	if (handle)
#ifdef PerlIO
	    RETVAL = PerlIO_flush(handle);
#else
	    RETVAL = Fflush(handle);
#endif
	else {
	    RETVAL = -1;
	    errno = EINVAL;
	}
    OUTPUT:
	RETVAL

void
setbuf(handle, buf)
	OutputStream	handle
	char *		buf = SvPOK(ST(1)) ? sv_grow(ST(1), BUFSIZ) : 0;
    CODE:
	if (handle)
#ifdef PERLIO_IS_STDIO
	    setbuf(handle, buf);
#else
	    not_here("IO::Handle::setbuf");
#endif

SysRet
setvbuf(handle, buf, type, size)
	OutputStream	handle
	char *		buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
	int		type
	int		size
    CODE:
#if defined(PERLIO_IS_STDIO) && defined(_IOFBF) && defined(HAS_SETVBUF)
	if (!handle)			/* Try input stream. */
	    handle = IoIFP(sv_2io(ST(0)));
	if (handle)
	    RETVAL = setvbuf(handle, buf, type, size);
	else {
	    RETVAL = -1;
	    errno = EINVAL;
	}
#else
	RETVAL = (SysRet) not_here("IO::Handle::setvbuf");
#endif
    OUTPUT:
	RETVAL


SysRet
fsync(handle)
	OutputStream handle
    CODE:
#ifdef HAS_FSYNC
	if(handle)
	    RETVAL = fsync(PerlIO_fileno(handle));
	else {
	    RETVAL = -1;
	    errno = EINVAL;
	}
#else
	RETVAL = (SysRet) not_here("IO::Handle::sync");
#endif
    OUTPUT:
	RETVAL


BOOT:
{
    HV *stash;
    /*
     * constant subs for IO::Poll
     */
    stash = gv_stashpvn("IO::Poll", 8, TRUE);
#ifdef	POLLIN
	newCONSTSUB(stash,"POLLIN",newSViv(POLLIN));
#endif
#ifdef	POLLPRI
        newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI));
#endif
#ifdef	POLLOUT
        newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT));
#endif
#ifdef	POLLRDNORM
        newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM));
#endif
#ifdef	POLLWRNORM
        newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM));
#endif
#ifdef	POLLRDBAND
        newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND));
#endif
#ifdef	POLLWRBAND
        newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND));
#endif
#ifdef	POLLNORM
        newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM));
#endif
#ifdef	POLLERR
        newCONSTSUB(stash,"POLLERR", newSViv(POLLERR));
#endif
#ifdef	POLLHUP
        newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP));
#endif
#ifdef	POLLNVAL
        newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL));
#endif
    /*
     * constant subs for IO::Handle
     */
    stash = gv_stashpvn("IO::Handle", 10, TRUE);
#ifdef _IOFBF
        newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF));
#endif
#ifdef _IOLBF
        newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF));
#endif
#ifdef _IONBF
        newCONSTSUB(stash,"_IONBF", newSViv(_IONBF));
#endif
#ifdef SEEK_SET
        newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET));
#endif
#ifdef SEEK_CUR
        newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR));
#endif
#ifdef SEEK_END
        newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END));
#endif
}
Commit	Line	Data
cf7fe8a2	1	/*
	2	* Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
	3	* This program is free software; you can redistribute it and/or
	4	* modify it under the same terms as Perl itself.
	5	*/
	6
c5be433b	7	#define PERL_NO_GET_CONTEXT
8add82fc	8	#include "EXTERN.h"
760ac839	9	#define PERLIO_NOT_STDIO 1
8add82fc	10	#include "perl.h"
8add82fc	11	#include "XSUB.h"
cf7fe8a2	12	#include "poll.h"
8add82fc	13	#ifdef I_UNISTD
	14	# include <unistd.h>
	15	#endif
cf7fe8a2	16	#if defined(I_FCNTL) \|\| defined(HAS_FCNTL)
760ac839	17	# include <fcntl.h>
760ac839	18	#endif
8add82fc	19
2a0cf753	20	#ifdef PerlIO
8add82fc	21	typedef int SysRet;
760ac839	22	typedef PerlIO * InputStream;
760ac839	23	typedef PerlIO * OutputStream;
2a0cf753	24	#else
	25	#define PERLIO_IS_STDIO 1
	26	typedef int SysRet;
	27	typedef FILE * InputStream;
	28	typedef FILE * OutputStream;
	29	#endif
8add82fc	30
cceca5ed	31	#define MY_start_subparse(fmt,flags) start_subparse(fmt,flags)
cf7fe8a2	32
	33	#ifndef gv_stashpvn
	34	#define gv_stashpvn(str,len,flags) gv_stashpv(str,flags)
	35	#endif
	36
8add82fc	37	static int
a1ea39dc	38	not_here(char *s)
8add82fc	39	{
	40	croak("%s not implemented on this architecture", s);
	41	return -1;
	42	}
	43
cf7fe8a2	44
	45	#ifndef PerlIO
	46	#define PerlIO_fileno(f) fileno(f)
8add82fc	47	#endif
cf7fe8a2	48
cf7fe8a2	49	static int
a1ea39dc	50	io_blocking(InputStream f, int block)
cf7fe8a2	51	{
	52	int RETVAL;
	53	if(!f) {
	54	errno = EBADF;
	55	return -1;
	56	}
	57	#if defined(HAS_FCNTL)
	58	RETVAL = fcntl(PerlIO_fileno(f), F_GETFL, 0);
	59	if (RETVAL >= 0) {
	60	int mode = RETVAL;
	61	#ifdef O_NONBLOCK
	62	/* POSIX style */
	63	#if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK
	64	/* Ooops has O_NDELAY too - make sure we don't
6fd254a4	65	* get SysV behaviour by mistake. */
cf7fe8a2	66
6fd254a4	67	/* E.g. In UNICOS and UNICOS/mk a F_GETFL returns an O_NDELAY
	68	* after a successful F_SETFL of an O_NONBLOCK. */
	69	RETVAL = RETVAL & (O_NONBLOCK \| O_NDELAY) ? 0 : 1;
	70
	71	if (block >= 0) {
	72	if ((mode & O_NDELAY) \|\| ((block == 0) && !(mode & O_NONBLOCK))) {
	73	int ret;
	74	mode = (mode & ~O_NDELAY) \| O_NONBLOCK;
	75	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	76	if(ret < 0)
	77	RETVAL = ret;
	78	}
	79	else
	80	if ((mode & O_NDELAY) \|\| ((block > 0) && (mode & O_NONBLOCK))) {
	81	int ret;
	82	mode &= ~(O_NONBLOCK \| O_NDELAY);
	83	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	84	if(ret < 0)
	85	RETVAL = ret;
	86	}
cf7fe8a2	87	}
8add82fc	88	#else
cf7fe8a2	89	/* Standard POSIX */
	90	RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;
	91
	92	if ((block == 0) && !(mode & O_NONBLOCK)) {
	93	int ret;
	94	mode \|= O_NONBLOCK;
	95	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	96	if(ret < 0)
	97	RETVAL = ret;
	98	}
	99	else if ((block > 0) && (mode & O_NONBLOCK)) {
	100	int ret;
	101	mode &= ~O_NONBLOCK;
	102	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	103	if(ret < 0)
	104	RETVAL = ret;
	105	}
	106	#endif
8add82fc	107	#else
cf7fe8a2	108	/* Not POSIX - better have O_NDELAY or we can't cope.
	109	* for BSD-ish machines this is an acceptable alternative
	110	* for SysV we can't tell "would block" from EOF but that is
	111	* the way SysV is...
	112	*/
	113	RETVAL = RETVAL & O_NDELAY ? 0 : 1;
	114
	115	if ((block == 0) && !(mode & O_NDELAY)) {
	116	int ret;
	117	mode \|= O_NDELAY;
	118	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	119	if(ret < 0)
	120	RETVAL = ret;
	121	}
	122	else if ((block > 0) && (mode & O_NDELAY)) {
	123	int ret;
	124	mode &= ~O_NDELAY;
	125	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	126	if(ret < 0)
	127	RETVAL = ret;
	128	}
8add82fc	129	#endif
cf7fe8a2	130	}
cf7fe8a2	131	return RETVAL;
8add82fc	132	#else
cf7fe8a2	133	return -1;
8add82fc	134	#endif
8add82fc	135	}
8add82fc	136
8add82fc	137	MODULE = IO PACKAGE = IO::Seekable PREFIX = f
	138
	139	SV *
	140	fgetpos(handle)
	141	InputStream handle
	142	CODE:
8add82fc	143	if (handle) {
8add82fc	144	Fpos_t pos;
2a0cf753	145	#ifdef PerlIO
760ac839	146	PerlIO_getpos(handle, &pos);
2a0cf753	147	#else
	148	fgetpos(handle, &pos);
	149	#endif
8add82fc	150	ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t)));
	151	}
	152	else {
a1ea39dc	153	ST(0) = &PL_sv_undef;
8add82fc	154	errno = EINVAL;
8add82fc	155	}
8add82fc	156
	157	SysRet
	158	fsetpos(handle, pos)
	159	InputStream handle
	160	SV * pos
	161	CODE:
a1ea39dc	162	char *p;
	163	STRLEN len;
	164	if (handle && (p = SvPV(pos,len)) && len == sizeof(Fpos_t))
2a0cf753	165	#ifdef PerlIO
a1ea39dc	166	RETVAL = PerlIO_setpos(handle, (Fpos_t*)p);
2a0cf753	167	#else
a1ea39dc	168	RETVAL = fsetpos(handle, (Fpos_t*)p);
2a0cf753	169	#endif
8add82fc	170	else {
	171	RETVAL = -1;
	172	errno = EINVAL;
	173	}
8add82fc	174	OUTPUT:
	175	RETVAL
	176
	177	MODULE = IO PACKAGE = IO::File PREFIX = f
	178
a375a877	179	SV *
8add82fc	180	new_tmpfile(packname = "IO::File")
8add82fc	181	char * packname
a375a877	182	PREINIT:
	183	OutputStream fp;
	184	GV *gv;
8add82fc	185	CODE:
2a0cf753	186	#ifdef PerlIO
a375a877	187	fp = PerlIO_tmpfile();
2a0cf753	188	#else
a375a877	189	fp = tmpfile();
2a0cf753	190	#endif
a375a877	191	gv = (GV*)SvREFCNT_inc(newGVgen(packname));
	192	hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD);
	193	if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) {
6d5cdeed	194	ST(0) = sv_2mortal(newRV((SV*)gv));
a375a877	195	sv_bless(ST(0), gv_stashpv(packname, TRUE));
cf7fe8a2	196	SvREFCNT_dec(gv); /* undo increment in newRV() */
a375a877	197	}
a375a877	198	else {
a1ea39dc	199	ST(0) = &PL_sv_undef;
a375a877	200	SvREFCNT_dec(gv);
a375a877	201	}
8add82fc	202
cf7fe8a2	203	MODULE = IO PACKAGE = IO::Poll
	204
	205	void
	206	_poll(timeout,...)
	207	int timeout;
	208	PPCODE:
	209	{
	210	#ifdef HAS_POLL
	211	int nfd = (items - 1) / 2;
	212	SV tmpsv = NEWSV(999,nfd sizeof(struct pollfd));
	213	struct pollfd fds = (struct pollfd )SvPVX(tmpsv);
	214	int i,j,ret;
	215	for(i=1, j=0 ; j < nfd ; j++) {
	216	fds[j].fd = SvIV(ST(i));
	217	i++;
	218	fds[j].events = SvIV(ST(i));
	219	i++;
	220	fds[j].revents = 0;
	221	}
	222	if((ret = poll(fds,nfd,timeout)) >= 0) {
	223	for(i=1, j=0 ; j < nfd ; j++) {
	224	sv_setiv(ST(i), fds[j].fd); i++;
	225	sv_setiv(ST(i), fds[j].revents); i++;
	226	}
	227	}
	228	SvREFCNT_dec(tmpsv);
	229	XSRETURN_IV(ret);
	230	#else
	231	not_here("IO::Poll::poll");
	232	#endif
	233	}
	234
	235	MODULE = IO PACKAGE = IO::Handle PREFIX = io_
	236
	237	void
	238	io_blocking(handle,blk=-1)
	239	InputStream handle
	240	int blk
	241	PROTOTYPE: $;$
	242	CODE:
	243	{
	244	int ret = io_blocking(handle, items == 1 ? -1 : blk ? 1 : 0);
	245	if(ret >= 0)
	246	XSRETURN_IV(ret);
	247	else
	248	XSRETURN_UNDEF;
	249	}
	250
8add82fc	251	MODULE = IO PACKAGE = IO::Handle PREFIX = f
8add82fc	252
8add82fc	253
	254	int
	255	ungetc(handle, c)
	256	InputStream handle
	257	int c
	258	CODE:
	259	if (handle)
2a0cf753	260	#ifdef PerlIO
760ac839	261	RETVAL = PerlIO_ungetc(handle, c);
2a0cf753	262	#else
	263	RETVAL = ungetc(c, handle);
	264	#endif
8add82fc	265	else {
	266	RETVAL = -1;
	267	errno = EINVAL;
	268	}
	269	OUTPUT:
	270	RETVAL
	271
	272	int
	273	ferror(handle)
	274	InputStream handle
	275	CODE:
	276	if (handle)
2a0cf753	277	#ifdef PerlIO
760ac839	278	RETVAL = PerlIO_error(handle);
2a0cf753	279	#else
	280	RETVAL = ferror(handle);
	281	#endif
	282	else {
	283	RETVAL = -1;
	284	errno = EINVAL;
	285	}
	286	OUTPUT:
	287	RETVAL
	288
	289	int
	290	clearerr(handle)
	291	InputStream handle
	292	CODE:
	293	if (handle) {
	294	#ifdef PerlIO
	295	PerlIO_clearerr(handle);
	296	#else
	297	clearerr(handle);
	298	#endif
	299	RETVAL = 0;
	300	}
8add82fc	301	else {
8add82fc	302	RETVAL = -1;
59629a13	303	errno = EINVAL;
	304	}
	305	OUTPUT:
	306	RETVAL
	307
	308	int
	309	untaint(handle)
	310	SV * handle
	311	CODE:
7a4c00b4	312	#ifdef IOf_UNTAINT
59629a13	313	IO * io;
	314	io = sv_2io(handle);
	315	if (io) {
	316	IoFLAGS(io) \|= IOf_UNTAINT;
	317	RETVAL = 0;
	318	}
	319	else {
7a4c00b4	320	#endif
59629a13	321	RETVAL = -1;
8add82fc	322	errno = EINVAL;
7a4c00b4	323	#ifdef IOf_UNTAINT
8add82fc	324	}
7a4c00b4	325	#endif
8add82fc	326	OUTPUT:
	327	RETVAL
	328
	329	SysRet
	330	fflush(handle)
	331	OutputStream handle
	332	CODE:
	333	if (handle)
2a0cf753	334	#ifdef PerlIO
760ac839	335	RETVAL = PerlIO_flush(handle);
2a0cf753	336	#else
	337	RETVAL = Fflush(handle);
	338	#endif
8add82fc	339	else {
	340	RETVAL = -1;
	341	errno = EINVAL;
	342	}
	343	OUTPUT:
	344	RETVAL
	345
	346	void
	347	setbuf(handle, buf)
	348	OutputStream handle
	349	char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), BUFSIZ) : 0;
	350	CODE:
	351	if (handle)
760ac839	352	#ifdef PERLIO_IS_STDIO
8add82fc	353	setbuf(handle, buf);
760ac839	354	#else
	355	not_here("IO::Handle::setbuf");
	356	#endif
8add82fc	357
	358	SysRet
	359	setvbuf(handle, buf, type, size)
	360	OutputStream handle
	361	char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
	362	int type
	363	int size
	364	CODE:
1eeb0f31	365	#if defined(PERLIO_IS_STDIO) && defined(_IOFBF) && defined(HAS_SETVBUF)
d924de76	366	if (!handle) /* Try input stream. */
d924de76	367	handle = IoIFP(sv_2io(ST(0)));
8add82fc	368	if (handle)
	369	RETVAL = setvbuf(handle, buf, type, size);
	370	else {
	371	RETVAL = -1;
	372	errno = EINVAL;
	373	}
	374	#else
61839fa9	375	RETVAL = (SysRet) not_here("IO::Handle::setvbuf");
760ac839	376	#endif
8add82fc	377	OUTPUT:
	378	RETVAL
	379
	380
cf7fe8a2	381	SysRet
	382	fsync(handle)
	383	OutputStream handle
	384	CODE:
	385	#ifdef HAS_FSYNC
	386	if(handle)
	387	RETVAL = fsync(PerlIO_fileno(handle));
	388	else {
	389	RETVAL = -1;
	390	errno = EINVAL;
	391	}
	392	#else
	393	RETVAL = (SysRet) not_here("IO::Handle::sync");
	394	#endif
	395	OUTPUT:
	396	RETVAL
	397
	398
	399	BOOT:
	400	{
	401	HV *stash;
	402	/*
	403	* constant subs for IO::Poll
	404	*/
	405	stash = gv_stashpvn("IO::Poll", 8, TRUE);
	406	#ifdef POLLIN
	407	newCONSTSUB(stash,"POLLIN",newSViv(POLLIN));
	408	#endif
	409	#ifdef POLLPRI
	410	newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI));
	411	#endif
	412	#ifdef POLLOUT
	413	newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT));
	414	#endif
	415	#ifdef POLLRDNORM
	416	newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM));
	417	#endif
	418	#ifdef POLLWRNORM
	419	newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM));
	420	#endif
	421	#ifdef POLLRDBAND
	422	newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND));
	423	#endif
	424	#ifdef POLLWRBAND
	425	newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND));
	426	#endif
	427	#ifdef POLLNORM
	428	newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM));
	429	#endif
	430	#ifdef POLLERR
	431	newCONSTSUB(stash,"POLLERR", newSViv(POLLERR));
	432	#endif
	433	#ifdef POLLHUP
	434	newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP));
	435	#endif
	436	#ifdef POLLNVAL
	437	newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL));
	438	#endif
	439	/*
	440	* constant subs for IO::Handle
	441	*/
	442	stash = gv_stashpvn("IO::Handle", 10, TRUE);
	443	#ifdef _IOFBF
	444	newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF));
445	#endif
446	#ifdef _IOLBF
447	newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF));
448	#endif
449	#ifdef _IONBF
450	newCONSTSUB(stash,"_IONBF", newSViv(_IONBF));
451	#endif
452	#ifdef SEEK_SET
453	newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET));
454	#endif
455	#ifdef SEEK_CUR
456	newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR));
457	#endif
458	#ifdef SEEK_END
459	newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END));
460	#endif
cf7fe8a2	461	}