[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.
 */

#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

#include "patchlevel.h"

#if (PATCHLEVEL < 3) || ((PATCHLEVEL == 3) && (SUBVERSION < 22))
     /* before 5.003_22 */
#    define MY_start_subparse(fmt,flags) start_subparse()
#else
#  if (PATCHLEVEL == 3) && (SUBVERSION == 22)
     /* 5.003_22 */
#    define MY_start_subparse(fmt,flags) start_subparse(flags)
#  else
     /* 5.003_23  onwards */
#    define MY_start_subparse(fmt,flags) start_subparse(fmt,flags)
#  endif
#endif

#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
8add82fc	7	#include "EXTERN.h"
760ac839	8	#define PERLIO_NOT_STDIO 1
8add82fc	9	#include "perl.h"
8add82fc	10	#include "XSUB.h"
cf7fe8a2	11	#include "poll.h"
8add82fc	12	#ifdef I_UNISTD
	13	# include <unistd.h>
	14	#endif
cf7fe8a2	15	#if defined(I_FCNTL) \|\| defined(HAS_FCNTL)
760ac839	16	# include <fcntl.h>
760ac839	17	#endif
8add82fc	18
2a0cf753	19	#ifdef PerlIO
8add82fc	20	typedef int SysRet;
760ac839	21	typedef PerlIO * InputStream;
760ac839	22	typedef PerlIO * OutputStream;
2a0cf753	23	#else
	24	#define PERLIO_IS_STDIO 1
	25	typedef int SysRet;
	26	typedef FILE * InputStream;
	27	typedef FILE * OutputStream;
	28	#endif
8add82fc	29
cf7fe8a2	30	#include "patchlevel.h"
	31
	32	#if (PATCHLEVEL < 3) \|\| ((PATCHLEVEL == 3) && (SUBVERSION < 22))
	33	/* before 5.003_22 */
	34	# define MY_start_subparse(fmt,flags) start_subparse()
	35	#else
	36	# if (PATCHLEVEL == 3) && (SUBVERSION == 22)
	37	/* 5.003_22 */
	38	# define MY_start_subparse(fmt,flags) start_subparse(flags)
	39	# else
	40	/* 5.003_23 onwards */
	41	# define MY_start_subparse(fmt,flags) start_subparse(fmt,flags)
	42	# endif
	43	#endif
	44
	45	#ifndef gv_stashpvn
	46	#define gv_stashpvn(str,len,flags) gv_stashpv(str,flags)
	47	#endif
	48
8add82fc	49	static int
a1ea39dc	50	not_here(char *s)
8add82fc	51	{
	52	croak("%s not implemented on this architecture", s);
	53	return -1;
	54	}
	55
cf7fe8a2	56
	57	#ifndef PerlIO
	58	#define PerlIO_fileno(f) fileno(f)
8add82fc	59	#endif
cf7fe8a2	60
cf7fe8a2	61	static int
a1ea39dc	62	io_blocking(InputStream f, int block)
cf7fe8a2	63	{
	64	int RETVAL;
	65	if(!f) {
	66	errno = EBADF;
	67	return -1;
	68	}
	69	#if defined(HAS_FCNTL)
	70	RETVAL = fcntl(PerlIO_fileno(f), F_GETFL, 0);
	71	if (RETVAL >= 0) {
	72	int mode = RETVAL;
	73	#ifdef O_NONBLOCK
	74	/* POSIX style */
	75	#if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK
	76	/* Ooops has O_NDELAY too - make sure we don't
	77	* get SysV behaviour by mistake
	78	*/
	79	RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;
	80
	81	if ((mode & O_NDELAY) \|\| ((block == 0) && !(mode & O_NONBLOCK))) {
	82	int ret;
	83	mode = (mode & ~O_NDELAY) \| O_NONBLOCK;
	84	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	85	if(ret < 0)
	86	RETVAL = ret;
	87	}
	88	else if ((mode & O_NDELAY) \|\| ((block > 0) && (mode & O_NONBLOCK))) {
	89	int ret;
	90	mode &= ~(O_NONBLOCK \| O_NDELAY);
	91	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	92	if(ret < 0)
	93	RETVAL = ret;
	94	}
8add82fc	95	#else
cf7fe8a2	96	/* Standard POSIX */
	97	RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;
	98
	99	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	else if ((block > 0) && (mode & O_NONBLOCK)) {
	107	int ret;
	108	mode &= ~O_NONBLOCK;
	109	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	110	if(ret < 0)
	111	RETVAL = ret;
	112	}
	113	#endif
8add82fc	114	#else
cf7fe8a2	115	/* Not POSIX - better have O_NDELAY or we can't cope.
	116	* for BSD-ish machines this is an acceptable alternative
	117	* for SysV we can't tell "would block" from EOF but that is
	118	* the way SysV is...
	119	*/
	120	RETVAL = RETVAL & O_NDELAY ? 0 : 1;
	121
	122	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	}
	129	else if ((block > 0) && (mode & O_NDELAY)) {
	130	int ret;
	131	mode &= ~O_NDELAY;
	132	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	133	if(ret < 0)
	134	RETVAL = ret;
	135	}
8add82fc	136	#endif
cf7fe8a2	137	}
cf7fe8a2	138	return RETVAL;
8add82fc	139	#else
cf7fe8a2	140	return -1;
8add82fc	141	#endif
8add82fc	142	}
8add82fc	143
8add82fc	144	MODULE = IO PACKAGE = IO::Seekable PREFIX = f
	145
	146	SV *
	147	fgetpos(handle)
	148	InputStream handle
	149	CODE:
8add82fc	150	if (handle) {
8add82fc	151	Fpos_t pos;
2a0cf753	152	#ifdef PerlIO
760ac839	153	PerlIO_getpos(handle, &pos);
2a0cf753	154	#else
	155	fgetpos(handle, &pos);
	156	#endif
8add82fc	157	ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t)));
	158	}
	159	else {
a1ea39dc	160	ST(0) = &PL_sv_undef;
8add82fc	161	errno = EINVAL;
8add82fc	162	}
8add82fc	163
	164	SysRet
	165	fsetpos(handle, pos)
	166	InputStream handle
	167	SV * pos
	168	CODE:
a1ea39dc	169	char *p;
	170	STRLEN len;
	171	if (handle && (p = SvPV(pos,len)) && len == sizeof(Fpos_t))
2a0cf753	172	#ifdef PerlIO
a1ea39dc	173	RETVAL = PerlIO_setpos(handle, (Fpos_t*)p);
2a0cf753	174	#else
a1ea39dc	175	RETVAL = fsetpos(handle, (Fpos_t*)p);
2a0cf753	176	#endif
8add82fc	177	else {
	178	RETVAL = -1;
	179	errno = EINVAL;
	180	}
8add82fc	181	OUTPUT:
	182	RETVAL
	183
	184	MODULE = IO PACKAGE = IO::File PREFIX = f
	185
a375a877	186	SV *
8add82fc	187	new_tmpfile(packname = "IO::File")
8add82fc	188	char * packname
a375a877	189	PREINIT:
	190	OutputStream fp;
	191	GV *gv;
8add82fc	192	CODE:
2a0cf753	193	#ifdef PerlIO
a375a877	194	fp = PerlIO_tmpfile();
2a0cf753	195	#else
a375a877	196	fp = tmpfile();
2a0cf753	197	#endif
a375a877	198	gv = (GV*)SvREFCNT_inc(newGVgen(packname));
	199	hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD);
	200	if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) {
6d5cdeed	201	ST(0) = sv_2mortal(newRV((SV*)gv));
a375a877	202	sv_bless(ST(0), gv_stashpv(packname, TRUE));
cf7fe8a2	203	SvREFCNT_dec(gv); /* undo increment in newRV() */
a375a877	204	}
a375a877	205	else {
a1ea39dc	206	ST(0) = &PL_sv_undef;
a375a877	207	SvREFCNT_dec(gv);
a375a877	208	}
8add82fc	209
cf7fe8a2	210	MODULE = IO PACKAGE = IO::Poll
	211
	212	void
	213	_poll(timeout,...)
	214	int timeout;
	215	PPCODE:
	216	{
	217	#ifdef HAS_POLL
	218	int nfd = (items - 1) / 2;
	219	SV tmpsv = NEWSV(999,nfd sizeof(struct pollfd));
	220	struct pollfd fds = (struct pollfd )SvPVX(tmpsv);
	221	int i,j,ret;
	222	for(i=1, j=0 ; j < nfd ; j++) {
	223	fds[j].fd = SvIV(ST(i));
	224	i++;
	225	fds[j].events = SvIV(ST(i));
	226	i++;
	227	fds[j].revents = 0;
	228	}
	229	if((ret = poll(fds,nfd,timeout)) >= 0) {
	230	for(i=1, j=0 ; j < nfd ; j++) {
	231	sv_setiv(ST(i), fds[j].fd); i++;
	232	sv_setiv(ST(i), fds[j].revents); i++;
	233	}
	234	}
	235	SvREFCNT_dec(tmpsv);
	236	XSRETURN_IV(ret);
	237	#else
	238	not_here("IO::Poll::poll");
	239	#endif
	240	}
	241
	242	MODULE = IO PACKAGE = IO::Handle PREFIX = io_
	243
	244	void
	245	io_blocking(handle,blk=-1)
	246	InputStream handle
	247	int blk
	248	PROTOTYPE: $;$
	249	CODE:
	250	{
	251	int ret = io_blocking(handle, items == 1 ? -1 : blk ? 1 : 0);
	252	if(ret >= 0)
	253	XSRETURN_IV(ret);
	254	else
	255	XSRETURN_UNDEF;
	256	}
	257
8add82fc	258	MODULE = IO PACKAGE = IO::Handle PREFIX = f
8add82fc	259
8add82fc	260
	261	int
	262	ungetc(handle, c)
	263	InputStream handle
	264	int c
	265	CODE:
	266	if (handle)
2a0cf753	267	#ifdef PerlIO
760ac839	268	RETVAL = PerlIO_ungetc(handle, c);
2a0cf753	269	#else
	270	RETVAL = ungetc(c, handle);
	271	#endif
8add82fc	272	else {
	273	RETVAL = -1;
	274	errno = EINVAL;
	275	}
	276	OUTPUT:
	277	RETVAL
	278
	279	int
	280	ferror(handle)
	281	InputStream handle
	282	CODE:
	283	if (handle)
2a0cf753	284	#ifdef PerlIO
760ac839	285	RETVAL = PerlIO_error(handle);
2a0cf753	286	#else
	287	RETVAL = ferror(handle);
	288	#endif
	289	else {
	290	RETVAL = -1;
	291	errno = EINVAL;
	292	}
	293	OUTPUT:
	294	RETVAL
	295
	296	int
	297	clearerr(handle)
	298	InputStream handle
	299	CODE:
	300	if (handle) {
	301	#ifdef PerlIO
	302	PerlIO_clearerr(handle);
	303	#else
	304	clearerr(handle);
	305	#endif
	306	RETVAL = 0;
	307	}
8add82fc	308	else {
8add82fc	309	RETVAL = -1;
59629a13	310	errno = EINVAL;
	311	}
	312	OUTPUT:
	313	RETVAL
	314
	315	int
	316	untaint(handle)
	317	SV * handle
	318	CODE:
7a4c00b4	319	#ifdef IOf_UNTAINT
59629a13	320	IO * io;
	321	io = sv_2io(handle);
	322	if (io) {
	323	IoFLAGS(io) \|= IOf_UNTAINT;
	324	RETVAL = 0;
	325	}
	326	else {
7a4c00b4	327	#endif
59629a13	328	RETVAL = -1;
8add82fc	329	errno = EINVAL;
7a4c00b4	330	#ifdef IOf_UNTAINT
8add82fc	331	}
7a4c00b4	332	#endif
8add82fc	333	OUTPUT:
	334	RETVAL
	335
	336	SysRet
	337	fflush(handle)
	338	OutputStream handle
	339	CODE:
	340	if (handle)
2a0cf753	341	#ifdef PerlIO
760ac839	342	RETVAL = PerlIO_flush(handle);
2a0cf753	343	#else
	344	RETVAL = Fflush(handle);
	345	#endif
8add82fc	346	else {
	347	RETVAL = -1;
	348	errno = EINVAL;
	349	}
	350	OUTPUT:
	351	RETVAL
	352
	353	void
	354	setbuf(handle, buf)
	355	OutputStream handle
	356	char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), BUFSIZ) : 0;
	357	CODE:
	358	if (handle)
760ac839	359	#ifdef PERLIO_IS_STDIO
8add82fc	360	setbuf(handle, buf);
760ac839	361	#else
	362	not_here("IO::Handle::setbuf");
	363	#endif
8add82fc	364
	365	SysRet
	366	setvbuf(handle, buf, type, size)
	367	OutputStream handle
	368	char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
	369	int type
	370	int size
	371	CODE:
61839fa9	372	/* Should check HAS_SETVBUF once Configure tests for that */
61839fa9	373	#if defined(PERLIO_IS_STDIO) && defined(_IOFBF)
d924de76	374	if (!handle) /* Try input stream. */
d924de76	375	handle = IoIFP(sv_2io(ST(0)));
8add82fc	376	if (handle)
	377	RETVAL = setvbuf(handle, buf, type, size);
	378	else {
	379	RETVAL = -1;
	380	errno = EINVAL;
	381	}
	382	#else
61839fa9	383	RETVAL = (SysRet) not_here("IO::Handle::setvbuf");
760ac839	384	#endif
8add82fc	385	OUTPUT:
	386	RETVAL
	387
	388
cf7fe8a2	389	SysRet
	390	fsync(handle)
	391	OutputStream handle
	392	CODE:
	393	#ifdef HAS_FSYNC
	394	if(handle)
	395	RETVAL = fsync(PerlIO_fileno(handle));
	396	else {
	397	RETVAL = -1;
	398	errno = EINVAL;
	399	}
	400	#else
	401	RETVAL = (SysRet) not_here("IO::Handle::sync");
	402	#endif
	403	OUTPUT:
	404	RETVAL
	405
	406
	407	BOOT:
	408	{
	409	HV *stash;
	410	/*
	411	* constant subs for IO::Poll
	412	*/
	413	stash = gv_stashpvn("IO::Poll", 8, TRUE);
	414	#ifdef POLLIN
	415	newCONSTSUB(stash,"POLLIN",newSViv(POLLIN));
	416	#endif
	417	#ifdef POLLPRI
	418	newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI));
	419	#endif
	420	#ifdef POLLOUT
	421	newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT));
	422	#endif
	423	#ifdef POLLRDNORM
	424	newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM));
	425	#endif
	426	#ifdef POLLWRNORM
	427	newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM));
	428	#endif
	429	#ifdef POLLRDBAND
	430	newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND));
	431	#endif
	432	#ifdef POLLWRBAND
	433	newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND));
	434	#endif
	435	#ifdef POLLNORM
	436	newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM));
	437	#endif
	438	#ifdef POLLERR
	439	newCONSTSUB(stash,"POLLERR", newSViv(POLLERR));
	440	#endif
	441	#ifdef POLLHUP
	442	newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP));
	443	#endif
	444	#ifdef POLLNVAL
	445	newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL));
	446	#endif
	447	/*
	448	* constant subs for IO::Handle
	449	*/
	450	stash = gv_stashpvn("IO::Handle", 10, TRUE);
	451	#ifdef _IOFBF
	452	newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF));
453	#endif
454	#ifdef _IOLBF
455	newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF));
456	#endif
457	#ifdef _IONBF
458	newCONSTSUB(stash,"_IONBF", newSViv(_IONBF));
459	#endif
460	#ifdef SEEK_SET
461	newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET));
462	#endif
463	#ifdef SEEK_CUR
464	newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR));
465	#endif
466	#ifdef SEEK_END
467	newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END));
468	#endif
469	/*
470	* constant subs for IO
471	*/
472	stash = gv_stashpvn("IO", 2, TRUE);
473	#ifdef EINPROGRESS
474	newCONSTSUB(stash,"EINPROGRESS", newSViv(EINPROGRESS));
475	#endif
476	}