[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
	 */
	RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;

	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:
/* Should check HAS_SETVBUF once Configure tests for that */
#if defined(PERLIO_IS_STDIO) && defined(_IOFBF)
	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
    /*
     * constant subs for IO
     */
    stash = gv_stashpvn("IO", 2, TRUE);
#ifdef EINPROGRESS
        newCONSTSUB(stash,"EINPROGRESS", newSViv(EINPROGRESS));
#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
	65	* get SysV behaviour by mistake
	66	*/
	67	RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;
	68
	69	if ((mode & O_NDELAY) \|\| ((block == 0) && !(mode & O_NONBLOCK))) {
	70	int ret;
	71	mode = (mode & ~O_NDELAY) \| O_NONBLOCK;
	72	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	73	if(ret < 0)
	74	RETVAL = ret;
	75	}
	76	else if ((mode & O_NDELAY) \|\| ((block > 0) && (mode & O_NONBLOCK))) {
	77	int ret;
	78	mode &= ~(O_NONBLOCK \| O_NDELAY);
	79	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	80	if(ret < 0)
	81	RETVAL = ret;
	82	}
8add82fc	83	#else
cf7fe8a2	84	/* Standard POSIX */
	85	RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;
	86
	87	if ((block == 0) && !(mode & O_NONBLOCK)) {
	88	int ret;
	89	mode \|= O_NONBLOCK;
	90	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	91	if(ret < 0)
	92	RETVAL = ret;
	93	}
	94	else if ((block > 0) && (mode & O_NONBLOCK)) {
	95	int ret;
	96	mode &= ~O_NONBLOCK;
	97	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	98	if(ret < 0)
	99	RETVAL = ret;
	100	}
	101	#endif
8add82fc	102	#else
cf7fe8a2	103	/* Not POSIX - better have O_NDELAY or we can't cope.
	104	* for BSD-ish machines this is an acceptable alternative
	105	* for SysV we can't tell "would block" from EOF but that is
	106	* the way SysV is...
	107	*/
	108	RETVAL = RETVAL & O_NDELAY ? 0 : 1;
	109
	110	if ((block == 0) && !(mode & O_NDELAY)) {
	111	int ret;
	112	mode \|= O_NDELAY;
	113	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	114	if(ret < 0)
	115	RETVAL = ret;
	116	}
	117	else if ((block > 0) && (mode & O_NDELAY)) {
	118	int ret;
	119	mode &= ~O_NDELAY;
	120	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	121	if(ret < 0)
	122	RETVAL = ret;
	123	}
8add82fc	124	#endif
cf7fe8a2	125	}
cf7fe8a2	126	return RETVAL;
8add82fc	127	#else
cf7fe8a2	128	return -1;
8add82fc	129	#endif
8add82fc	130	}
8add82fc	131
8add82fc	132	MODULE = IO PACKAGE = IO::Seekable PREFIX = f
	133
	134	SV *
	135	fgetpos(handle)
	136	InputStream handle
	137	CODE:
8add82fc	138	if (handle) {
8add82fc	139	Fpos_t pos;
2a0cf753	140	#ifdef PerlIO
760ac839	141	PerlIO_getpos(handle, &pos);
2a0cf753	142	#else
	143	fgetpos(handle, &pos);
	144	#endif
8add82fc	145	ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t)));
	146	}
	147	else {
a1ea39dc	148	ST(0) = &PL_sv_undef;
8add82fc	149	errno = EINVAL;
8add82fc	150	}
8add82fc	151
	152	SysRet
	153	fsetpos(handle, pos)
	154	InputStream handle
	155	SV * pos
	156	CODE:
a1ea39dc	157	char *p;
	158	STRLEN len;
	159	if (handle && (p = SvPV(pos,len)) && len == sizeof(Fpos_t))
2a0cf753	160	#ifdef PerlIO
a1ea39dc	161	RETVAL = PerlIO_setpos(handle, (Fpos_t*)p);
2a0cf753	162	#else
a1ea39dc	163	RETVAL = fsetpos(handle, (Fpos_t*)p);
2a0cf753	164	#endif
8add82fc	165	else {
	166	RETVAL = -1;
	167	errno = EINVAL;
	168	}
8add82fc	169	OUTPUT:
	170	RETVAL
	171
	172	MODULE = IO PACKAGE = IO::File PREFIX = f
	173
a375a877	174	SV *
8add82fc	175	new_tmpfile(packname = "IO::File")
8add82fc	176	char * packname
a375a877	177	PREINIT:
	178	OutputStream fp;
	179	GV *gv;
8add82fc	180	CODE:
2a0cf753	181	#ifdef PerlIO
a375a877	182	fp = PerlIO_tmpfile();
2a0cf753	183	#else
a375a877	184	fp = tmpfile();
2a0cf753	185	#endif
a375a877	186	gv = (GV*)SvREFCNT_inc(newGVgen(packname));
	187	hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD);
	188	if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) {
6d5cdeed	189	ST(0) = sv_2mortal(newRV((SV*)gv));
a375a877	190	sv_bless(ST(0), gv_stashpv(packname, TRUE));
cf7fe8a2	191	SvREFCNT_dec(gv); /* undo increment in newRV() */
a375a877	192	}
a375a877	193	else {
a1ea39dc	194	ST(0) = &PL_sv_undef;
a375a877	195	SvREFCNT_dec(gv);
a375a877	196	}
8add82fc	197
cf7fe8a2	198	MODULE = IO PACKAGE = IO::Poll
	199
	200	void
	201	_poll(timeout,...)
	202	int timeout;
	203	PPCODE:
	204	{
	205	#ifdef HAS_POLL
	206	int nfd = (items - 1) / 2;
	207	SV tmpsv = NEWSV(999,nfd sizeof(struct pollfd));
	208	struct pollfd fds = (struct pollfd )SvPVX(tmpsv);
	209	int i,j,ret;
	210	for(i=1, j=0 ; j < nfd ; j++) {
	211	fds[j].fd = SvIV(ST(i));
	212	i++;
	213	fds[j].events = SvIV(ST(i));
	214	i++;
	215	fds[j].revents = 0;
	216	}
	217	if((ret = poll(fds,nfd,timeout)) >= 0) {
	218	for(i=1, j=0 ; j < nfd ; j++) {
	219	sv_setiv(ST(i), fds[j].fd); i++;
	220	sv_setiv(ST(i), fds[j].revents); i++;
	221	}
	222	}
	223	SvREFCNT_dec(tmpsv);
	224	XSRETURN_IV(ret);
	225	#else
	226	not_here("IO::Poll::poll");
	227	#endif
	228	}
	229
	230	MODULE = IO PACKAGE = IO::Handle PREFIX = io_
	231
	232	void
	233	io_blocking(handle,blk=-1)
	234	InputStream handle
	235	int blk
	236	PROTOTYPE: $;$
	237	CODE:
	238	{
	239	int ret = io_blocking(handle, items == 1 ? -1 : blk ? 1 : 0);
	240	if(ret >= 0)
	241	XSRETURN_IV(ret);
	242	else
	243	XSRETURN_UNDEF;
	244	}
	245
8add82fc	246	MODULE = IO PACKAGE = IO::Handle PREFIX = f
8add82fc	247
8add82fc	248
	249	int
	250	ungetc(handle, c)
	251	InputStream handle
	252	int c
	253	CODE:
	254	if (handle)
2a0cf753	255	#ifdef PerlIO
760ac839	256	RETVAL = PerlIO_ungetc(handle, c);
2a0cf753	257	#else
	258	RETVAL = ungetc(c, handle);
	259	#endif
8add82fc	260	else {
	261	RETVAL = -1;
	262	errno = EINVAL;
	263	}
	264	OUTPUT:
	265	RETVAL
	266
	267	int
	268	ferror(handle)
	269	InputStream handle
	270	CODE:
	271	if (handle)
2a0cf753	272	#ifdef PerlIO
760ac839	273	RETVAL = PerlIO_error(handle);
2a0cf753	274	#else
	275	RETVAL = ferror(handle);
	276	#endif
	277	else {
	278	RETVAL = -1;
	279	errno = EINVAL;
	280	}
	281	OUTPUT:
	282	RETVAL
	283
	284	int
	285	clearerr(handle)
	286	InputStream handle
	287	CODE:
	288	if (handle) {
	289	#ifdef PerlIO
	290	PerlIO_clearerr(handle);
	291	#else
	292	clearerr(handle);
	293	#endif
	294	RETVAL = 0;
	295	}
8add82fc	296	else {
8add82fc	297	RETVAL = -1;
59629a13	298	errno = EINVAL;
	299	}
	300	OUTPUT:
	301	RETVAL
	302
	303	int
	304	untaint(handle)
	305	SV * handle
	306	CODE:
7a4c00b4	307	#ifdef IOf_UNTAINT
59629a13	308	IO * io;
	309	io = sv_2io(handle);
	310	if (io) {
	311	IoFLAGS(io) \|= IOf_UNTAINT;
	312	RETVAL = 0;
	313	}
	314	else {
7a4c00b4	315	#endif
59629a13	316	RETVAL = -1;
8add82fc	317	errno = EINVAL;
7a4c00b4	318	#ifdef IOf_UNTAINT
8add82fc	319	}
7a4c00b4	320	#endif
8add82fc	321	OUTPUT:
	322	RETVAL
	323
	324	SysRet
	325	fflush(handle)
	326	OutputStream handle
	327	CODE:
	328	if (handle)
2a0cf753	329	#ifdef PerlIO
760ac839	330	RETVAL = PerlIO_flush(handle);
2a0cf753	331	#else
	332	RETVAL = Fflush(handle);
	333	#endif
8add82fc	334	else {
	335	RETVAL = -1;
	336	errno = EINVAL;
	337	}
	338	OUTPUT:
	339	RETVAL
	340
	341	void
	342	setbuf(handle, buf)
	343	OutputStream handle
	344	char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), BUFSIZ) : 0;
	345	CODE:
	346	if (handle)
760ac839	347	#ifdef PERLIO_IS_STDIO
8add82fc	348	setbuf(handle, buf);
760ac839	349	#else
	350	not_here("IO::Handle::setbuf");
	351	#endif
8add82fc	352
	353	SysRet
	354	setvbuf(handle, buf, type, size)
	355	OutputStream handle
	356	char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
	357	int type
	358	int size
	359	CODE:
61839fa9	360	/* Should check HAS_SETVBUF once Configure tests for that */
61839fa9	361	#if defined(PERLIO_IS_STDIO) && defined(_IOFBF)
d924de76	362	if (!handle) /* Try input stream. */
d924de76	363	handle = IoIFP(sv_2io(ST(0)));
8add82fc	364	if (handle)
	365	RETVAL = setvbuf(handle, buf, type, size);
	366	else {
	367	RETVAL = -1;
	368	errno = EINVAL;
	369	}
	370	#else
61839fa9	371	RETVAL = (SysRet) not_here("IO::Handle::setvbuf");
760ac839	372	#endif
8add82fc	373	OUTPUT:
	374	RETVAL
	375
	376
cf7fe8a2	377	SysRet
	378	fsync(handle)
	379	OutputStream handle
	380	CODE:
	381	#ifdef HAS_FSYNC
	382	if(handle)
	383	RETVAL = fsync(PerlIO_fileno(handle));
	384	else {
	385	RETVAL = -1;
	386	errno = EINVAL;
	387	}
	388	#else
	389	RETVAL = (SysRet) not_here("IO::Handle::sync");
	390	#endif
	391	OUTPUT:
	392	RETVAL
	393
	394
	395	BOOT:
	396	{
	397	HV *stash;
	398	/*
	399	* constant subs for IO::Poll
	400	*/
	401	stash = gv_stashpvn("IO::Poll", 8, TRUE);
	402	#ifdef POLLIN
	403	newCONSTSUB(stash,"POLLIN",newSViv(POLLIN));
	404	#endif
	405	#ifdef POLLPRI
	406	newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI));
	407	#endif
	408	#ifdef POLLOUT
	409	newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT));
	410	#endif
	411	#ifdef POLLRDNORM
	412	newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM));
	413	#endif
	414	#ifdef POLLWRNORM
	415	newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM));
	416	#endif
	417	#ifdef POLLRDBAND
	418	newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND));
	419	#endif
	420	#ifdef POLLWRBAND
	421	newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND));
	422	#endif
	423	#ifdef POLLNORM
	424	newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM));
	425	#endif
	426	#ifdef POLLERR
	427	newCONSTSUB(stash,"POLLERR", newSViv(POLLERR));
	428	#endif
	429	#ifdef POLLHUP
	430	newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP));
	431	#endif
	432	#ifdef POLLNVAL
	433	newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL));
	434	#endif
	435	/*
	436	* constant subs for IO::Handle
	437	*/
	438	stash = gv_stashpvn("IO::Handle", 10, TRUE);
	439	#ifdef _IOFBF
	440	newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF));
441	#endif
442	#ifdef _IOLBF
443	newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF));
444	#endif
445	#ifdef _IONBF
446	newCONSTSUB(stash,"_IONBF", newSViv(_IONBF));
447	#endif
448	#ifdef SEEK_SET
449	newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET));
450	#endif
451	#ifdef SEEK_CUR
452	newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR));
453	#endif
454	#ifdef SEEK_END
455	newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END));
456	#endif
457	/*
458	* constant subs for IO
459	*/
460	stash = gv_stashpvn("IO", 2, TRUE);
461	#ifdef EINPROGRESS
462	newCONSTSUB(stash,"EINPROGRESS", newSViv(EINPROGRESS));
463	#endif
464	}