[perl5.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_EXT_IO

#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

#ifndef SIOCATMARK
#   ifdef I_SYS_SOCKIO
#       include <sys/sockio.h>
#   endif
#endif

#ifdef PerlIO
#if defined(MACOS_TRADITIONAL) && defined(USE_SFIO)
#define PERLIO_IS_STDIO 1
#undef setbuf
#undef setvbuf
#define setvbuf		_stdsetvbuf
#define setbuf(f,b)	( __sf_setbuf(f,b) )
#endif
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(pTHX_ InputStream f, int block)
{
#if defined(HAS_FCNTL)
    int RETVAL;
    if(!f) {
	errno = EBADF;
	return -1;
    }
    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

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

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

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

void
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 = (short)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(aTHX_ 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, ...)
	OutputStream	handle
    CODE:
	if (handle)
#ifdef PERLIO_IS_STDIO
        {
	    char *buf = items == 2 && SvPOK(ST(1)) ?
	      sv_grow(ST(1), BUFSIZ) : 0;
	    setbuf(handle, buf);
	}
#else
	    not_here("IO::Handle::setbuf");
#endif

SysRet
setvbuf(...)
    CODE:
	if (items != 4)
            Perl_croak(aTHX_ "Usage: IO::Handle::setvbuf(handle, buf, type, size)");
#if defined(PERLIO_IS_STDIO) && defined(_IOFBF) && defined(HAS_SETVBUF)
    {
        OutputStream	handle = 0;
	char *		buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
	int		type;
	int		size;

	if (items == 4) {
	    handle = IoOFP(sv_2io(ST(0)));
	    buf    = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
	    type   = (int)SvIV(ST(2));
	    size   = (int)SvIV(ST(3));
	}
	if (!handle)			/* Try input stream. */
	    handle = IoIFP(sv_2io(ST(0)));
	if (items == 4 && 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


MODULE = IO	PACKAGE = IO::Socket

SysRet
sockatmark (sock)
   InputStream sock
   PROTOTYPE: $
   PREINIT:
     int fd;
   CODE:
   {
     fd = PerlIO_fileno(sock);
#ifdef HAS_SOCKATMARK
     RETVAL = sockatmark(fd);
#else
     {
       int flag = 0;
#   ifdef SIOCATMARK
#     if defined(NETWARE) || defined(WIN32)
       if (ioctl(fd, SIOCATMARK, (void*)&flag) != 0)
#     else
       if (ioctl(fd, SIOCATMARK, &flag) != 0)
#     endif
	 XSRETURN_UNDEF;
#   else
       not_here("IO::Socket::atmark");
#   endif
       RETVAL = flag;
     }
#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 GS	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
6e22d046 JH	7	#define PERL_EXT_IO
6e22d046 JH	8
c5be433b	9	#define PERL_NO_GET_CONTEXT
8add82fc	10	#include "EXTERN.h"
760ac839	11	#define PERLIO_NOT_STDIO 1
8add82fc	12	#include "perl.h"
8add82fc	13	#include "XSUB.h"
cf7fe8a2	14	#include "poll.h"
8add82fc	15	#ifdef I_UNISTD
	16	# include <unistd.h>
	17	#endif
cf7fe8a2	18	#if defined(I_FCNTL) \|\| defined(HAS_FCNTL)
760ac839 LW	19	# include <fcntl.h>
760ac839 LW	20	#endif
8add82fc	21
63a347c7 JH	22	#ifndef SIOCATMARK
	23	# ifdef I_SYS_SOCKIO
	24	# include <sys/sockio.h>
	25	# endif
	26	#endif
	27
2a0cf753	28	#ifdef PerlIO
eb44fba6	29	#if defined(MACOS_TRADITIONAL) && defined(USE_SFIO)
824215e2 JH	30	#define PERLIO_IS_STDIO 1
	31	#undef setbuf
	32	#undef setvbuf
	33	#define setvbuf _stdsetvbuf
	34	#define setbuf(f,b) ( __sf_setbuf(f,b) )
	35	#endif
8add82fc	36	typedef int SysRet;
760ac839 LW	37	typedef PerlIO * InputStream;
760ac839 LW	38	typedef PerlIO * OutputStream;
2a0cf753	39	#else
	40	#define PERLIO_IS_STDIO 1
	41	typedef int SysRet;
	42	typedef FILE * InputStream;
	43	typedef FILE * OutputStream;
	44	#endif
8add82fc	45
cceca5ed	46	#define MY_start_subparse(fmt,flags) start_subparse(fmt,flags)
cf7fe8a2 GS	47
	48	#ifndef gv_stashpvn
	49	#define gv_stashpvn(str,len,flags) gv_stashpv(str,flags)
	50	#endif
	51
8add82fc	52	static int
a1ea39dc	53	not_here(char *s)
8add82fc	54	{
	55	croak("%s not implemented on this architecture", s);
	56	return -1;
	57	}
	58
cf7fe8a2 GS	59
	60	#ifndef PerlIO
	61	#define PerlIO_fileno(f) fileno(f)
8add82fc	62	#endif
cf7fe8a2 GS	63
cf7fe8a2 GS	64	static int
e87a358a	65	io_blocking(pTHX_ InputStream f, int block)
cf7fe8a2	66	{
91f3b821	67	#if defined(HAS_FCNTL)
cf7fe8a2 GS	68	int RETVAL;
	69	if(!f) {
	70	errno = EBADF;
	71	return -1;
	72	}
cf7fe8a2 GS	73	RETVAL = fcntl(PerlIO_fileno(f), F_GETFL, 0);
	74	if (RETVAL >= 0) {
	75	int mode = RETVAL;
	76	#ifdef O_NONBLOCK
766a733e	77	/* POSIX style */
cf7fe8a2	78	#if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK
766a733e	79	/* Ooops has O_NDELAY too - make sure we don't
6fd254a4	80	* get SysV behaviour by mistake. */
cf7fe8a2	81
6fd254a4 JH	82	/* E.g. In UNICOS and UNICOS/mk a F_GETFL returns an O_NDELAY
	83	* after a successful F_SETFL of an O_NONBLOCK. */
	84	RETVAL = RETVAL & (O_NONBLOCK \| O_NDELAY) ? 0 : 1;
	85
	86	if (block >= 0) {
	87	if ((mode & O_NDELAY) \|\| ((block == 0) && !(mode & O_NONBLOCK))) {
	88	int ret;
	89	mode = (mode & ~O_NDELAY) \| O_NONBLOCK;
	90	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	91	if(ret < 0)
	92	RETVAL = ret;
	93	}
	94	else
	95	if ((mode & O_NDELAY) \|\| ((block > 0) && (mode & O_NONBLOCK))) {
	96	int ret;
	97	mode &= ~(O_NONBLOCK \| O_NDELAY);
	98	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	99	if(ret < 0)
	100	RETVAL = ret;
	101	}
cf7fe8a2	102	}
8add82fc	103	#else
766a733e	104	/* Standard POSIX */
cf7fe8a2 GS	105	RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;
	106
	107	if ((block == 0) && !(mode & O_NONBLOCK)) {
	108	int ret;
	109	mode \|= O_NONBLOCK;
	110	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	111	if(ret < 0)
	112	RETVAL = ret;
	113	}
	114	else if ((block > 0) && (mode & O_NONBLOCK)) {
	115	int ret;
	116	mode &= ~O_NONBLOCK;
	117	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	118	if(ret < 0)
	119	RETVAL = ret;
	120	}
766a733e	121	#endif
8add82fc	122	#else
cf7fe8a2 GS	123	/* Not POSIX - better have O_NDELAY or we can't cope.
cf7fe8a2 GS	124	* for BSD-ish machines this is an acceptable alternative
766a733e	125	* for SysV we can't tell "would block" from EOF but that is
cf7fe8a2 GS	126	* the way SysV is...
	127	*/
	128	RETVAL = RETVAL & O_NDELAY ? 0 : 1;
	129
	130	if ((block == 0) && !(mode & O_NDELAY)) {
	131	int ret;
	132	mode \|= O_NDELAY;
	133	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	134	if(ret < 0)
	135	RETVAL = ret;
	136	}
	137	else if ((block > 0) && (mode & O_NDELAY)) {
	138	int ret;
	139	mode &= ~O_NDELAY;
	140	ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
	141	if(ret < 0)
	142	RETVAL = ret;
	143	}
8add82fc	144	#endif
cf7fe8a2 GS	145	}
cf7fe8a2 GS	146	return RETVAL;
8add82fc	147	#else
91f3b821	148	return -1;
8add82fc	149	#endif
8add82fc	150	}
8add82fc	151
8add82fc	152	MODULE = IO PACKAGE = IO::Seekable PREFIX = f
8add82fc	153
8063af02	154	void
8add82fc	155	fgetpos(handle)
	156	InputStream handle
	157	CODE:
8add82fc	158	if (handle) {
2a0cf753	159	#ifdef PerlIO
766a733e NIS	160	ST(0) = sv_2mortal(newSV(0));
	161	if (PerlIO_getpos(handle, ST(0)) != 0) {
	162	ST(0) = &PL_sv_undef;
	163	}
2a0cf753	164	#else
766a733e	165	if (fgetpos(handle, &pos)) {
a6a714bd NC	166	ST(0) = &PL_sv_undef;
	167	} else {
	168	ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t)));
	169	}
766a733e	170	#endif
8add82fc	171	}
8add82fc	172	else {
a1ea39dc	173	ST(0) = &PL_sv_undef;
8add82fc	174	errno = EINVAL;
8add82fc	175	}
8add82fc	176
	177	SysRet
	178	fsetpos(handle, pos)
	179	InputStream handle
	180	SV * pos
	181	CODE:
766a733e	182	if (handle) {
2a0cf753	183	#ifdef PerlIO
766a733e	184	RETVAL = PerlIO_setpos(handle, pos);
2a0cf753	185	#else
766a733e NIS	186	char *p;
	187	STRLEN len;
	188	if ((p = SvPV(pos,len)) && len == sizeof(Fpos_t)) {
	189	RETVAL = fsetpos(handle, (Fpos_t*)p);
	190	}
	191	else {
	192	RETVAL = -1;
	193	errno = EINVAL;
	194	}
2a0cf753	195	#endif
766a733e	196	}
8add82fc	197	else {
	198	RETVAL = -1;
	199	errno = EINVAL;
	200	}
8add82fc	201	OUTPUT:
	202	RETVAL
	203
	204	MODULE = IO PACKAGE = IO::File PREFIX = f
	205
8063af02	206	void
8add82fc	207	new_tmpfile(packname = "IO::File")
8add82fc	208	char * packname
a375a877 GB	209	PREINIT:
	210	OutputStream fp;
	211	GV *gv;
8add82fc	212	CODE:
2a0cf753	213	#ifdef PerlIO
a375a877	214	fp = PerlIO_tmpfile();
2a0cf753	215	#else
a375a877	216	fp = tmpfile();
2a0cf753	217	#endif
a375a877 GB	218	gv = (GV*)SvREFCNT_inc(newGVgen(packname));
	219	hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD);
	220	if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) {
6d5cdeed	221	ST(0) = sv_2mortal(newRV((SV*)gv));
a375a877	222	sv_bless(ST(0), gv_stashpv(packname, TRUE));
cf7fe8a2	223	SvREFCNT_dec(gv); /* undo increment in newRV() */
a375a877 GB	224	}
a375a877 GB	225	else {
a1ea39dc	226	ST(0) = &PL_sv_undef;
a375a877 GB	227	SvREFCNT_dec(gv);
a375a877 GB	228	}
8add82fc	229
cf7fe8a2 GS	230	MODULE = IO PACKAGE = IO::Poll
cf7fe8a2 GS	231
766a733e	232	void
cf7fe8a2 GS	233	_poll(timeout,...)
	234	int timeout;
	235	PPCODE:
	236	{
	237	#ifdef HAS_POLL
	238	int nfd = (items - 1) / 2;
	239	SV tmpsv = NEWSV(999,nfd sizeof(struct pollfd));
	240	struct pollfd fds = (struct pollfd )SvPVX(tmpsv);
	241	int i,j,ret;
	242	for(i=1, j=0 ; j < nfd ; j++) {
	243	fds[j].fd = SvIV(ST(i));
	244	i++;
7c436af3	245	fds[j].events = (short)SvIV(ST(i));
cf7fe8a2 GS	246	i++;
	247	fds[j].revents = 0;
	248	}
	249	if((ret = poll(fds,nfd,timeout)) >= 0) {
	250	for(i=1, j=0 ; j < nfd ; j++) {
	251	sv_setiv(ST(i), fds[j].fd); i++;
	252	sv_setiv(ST(i), fds[j].revents); i++;
	253	}
	254	}
	255	SvREFCNT_dec(tmpsv);
	256	XSRETURN_IV(ret);
	257	#else
	258	not_here("IO::Poll::poll");
	259	#endif
	260	}
	261
	262	MODULE = IO PACKAGE = IO::Handle PREFIX = io_
	263
	264	void
	265	io_blocking(handle,blk=-1)
	266	InputStream handle
	267	int blk
	268	PROTOTYPE: $;$
	269	CODE:
	270	{
e87a358a	271	int ret = io_blocking(aTHX_ handle, items == 1 ? -1 : blk ? 1 : 0);
cf7fe8a2 GS	272	if(ret >= 0)
	273	XSRETURN_IV(ret);
	274	else
	275	XSRETURN_UNDEF;
	276	}
	277
8add82fc	278	MODULE = IO PACKAGE = IO::Handle PREFIX = f
8add82fc	279
8add82fc	280	int
	281	ungetc(handle, c)
	282	InputStream handle
	283	int c
	284	CODE:
	285	if (handle)
2a0cf753	286	#ifdef PerlIO
760ac839	287	RETVAL = PerlIO_ungetc(handle, c);
2a0cf753	288	#else
	289	RETVAL = ungetc(c, handle);
	290	#endif
8add82fc	291	else {
	292	RETVAL = -1;
	293	errno = EINVAL;
	294	}
	295	OUTPUT:
	296	RETVAL
	297
	298	int
	299	ferror(handle)
	300	InputStream handle
	301	CODE:
	302	if (handle)
2a0cf753	303	#ifdef PerlIO
760ac839	304	RETVAL = PerlIO_error(handle);
2a0cf753	305	#else
	306	RETVAL = ferror(handle);
	307	#endif
	308	else {
	309	RETVAL = -1;
	310	errno = EINVAL;
	311	}
	312	OUTPUT:
	313	RETVAL
	314
	315	int
	316	clearerr(handle)
	317	InputStream handle
	318	CODE:
	319	if (handle) {
	320	#ifdef PerlIO
	321	PerlIO_clearerr(handle);
	322	#else
	323	clearerr(handle);
	324	#endif
	325	RETVAL = 0;
	326	}
8add82fc	327	else {
8add82fc	328	RETVAL = -1;
59629a13 RR	329	errno = EINVAL;
	330	}
	331	OUTPUT:
	332	RETVAL
	333
	334	int
	335	untaint(handle)
	336	SV * handle
	337	CODE:
7a4c00b4	338	#ifdef IOf_UNTAINT
59629a13 RR	339	IO * io;
	340	io = sv_2io(handle);
	341	if (io) {
	342	IoFLAGS(io) \|= IOf_UNTAINT;
	343	RETVAL = 0;
	344	}
	345	else {
7a4c00b4	346	#endif
59629a13	347	RETVAL = -1;
8add82fc	348	errno = EINVAL;
7a4c00b4	349	#ifdef IOf_UNTAINT
8add82fc	350	}
7a4c00b4	351	#endif
8add82fc	352	OUTPUT:
	353	RETVAL
	354
	355	SysRet
	356	fflush(handle)
	357	OutputStream handle
	358	CODE:
	359	if (handle)
2a0cf753	360	#ifdef PerlIO
760ac839	361	RETVAL = PerlIO_flush(handle);
2a0cf753	362	#else
	363	RETVAL = Fflush(handle);
	364	#endif
8add82fc	365	else {
	366	RETVAL = -1;
	367	errno = EINVAL;
	368	}
	369	OUTPUT:
	370	RETVAL
	371
	372	void
c46a0ec2	373	setbuf(handle, ...)
8add82fc	374	OutputStream handle
8add82fc	375	CODE:
8add82fc	376	if (handle)
760ac839	377	#ifdef PERLIO_IS_STDIO
c46a0ec2 JH	378	{
	379	char *buf = items == 2 && SvPOK(ST(1)) ?
	380	sv_grow(ST(1), BUFSIZ) : 0;
8add82fc	381	setbuf(handle, buf);
c46a0ec2	382	}
760ac839 LW	383	#else
	384	not_here("IO::Handle::setbuf");
	385	#endif
8add82fc	386
8add82fc	387	SysRet
c46a0ec2	388	setvbuf(...)
8add82fc	389	CODE:
c46a0ec2 JH	390	if (items != 4)
c46a0ec2 JH	391	Perl_croak(aTHX_ "Usage: IO::Handle::setvbuf(handle, buf, type, size)");
1eeb0f31	392	#if defined(PERLIO_IS_STDIO) && defined(_IOFBF) && defined(HAS_SETVBUF)
c46a0ec2 JH	393	{
	394	OutputStream handle = 0;
	395	char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
	396	int type;
	397	int size;
	398
	399	if (items == 4) {
	400	handle = IoOFP(sv_2io(ST(0)));
	401	buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
	402	type = (int)SvIV(ST(2));
	403	size = (int)SvIV(ST(3));
	404	}
d924de76 IZ	405	if (!handle) /* Try input stream. */
d924de76 IZ	406	handle = IoIFP(sv_2io(ST(0)));
c46a0ec2	407	if (items == 4 && handle)
8add82fc	408	RETVAL = setvbuf(handle, buf, type, size);
	409	else {
	410	RETVAL = -1;
	411	errno = EINVAL;
	412	}
c46a0ec2	413	}
8add82fc	414	#else
61839fa9	415	RETVAL = (SysRet) not_here("IO::Handle::setvbuf");
760ac839	416	#endif
8add82fc	417	OUTPUT:
	418	RETVAL
	419
	420
cf7fe8a2 GS	421	SysRet
	422	fsync(handle)
	423	OutputStream handle
	424	CODE:
	425	#ifdef HAS_FSYNC
	426	if(handle)
	427	RETVAL = fsync(PerlIO_fileno(handle));
	428	else {
	429	RETVAL = -1;
	430	errno = EINVAL;
	431	}
	432	#else
	433	RETVAL = (SysRet) not_here("IO::Handle::sync");
	434	#endif
	435	OUTPUT:
	436	RETVAL
	437
	438
63a347c7 JH	439	MODULE = IO PACKAGE = IO::Socket
	440
	441	SysRet
	442	sockatmark (sock)
	443	InputStream sock
	444	PROTOTYPE: $
	445	PREINIT:
06c912bc	446	int fd;
63a347c7 JH	447	CODE:
	448	{
	449	fd = PerlIO_fileno(sock);
	450	#ifdef HAS_SOCKATMARK
06c912bc	451	RETVAL = sockatmark(fd);
63a347c7	452	#else
06c912bc JH	453	{
06c912bc JH	454	int flag = 0;
6d087280	455	# ifdef SIOCATMARK
6e22d046	456	# if defined(NETWARE) \|\| defined(WIN32)
2986a63f	457	if (ioctl(fd, SIOCATMARK, (void*)&flag) != 0)
f754b6e0 GS	458	# else
	459	if (ioctl(fd, SIOCATMARK, &flag) != 0)
	460	# endif
06c912bc	461	XSRETURN_UNDEF;
63a347c7	462	# else
06c912bc JH	463	not_here("IO::Socket::atmark");
	464	# endif
	465	RETVAL = flag;
	466	}
63a347c7 JH	467	#endif
	468	}
	469	OUTPUT:
	470	RETVAL
	471
cf7fe8a2 GS	472	BOOT:
	473	{
	474	HV *stash;
	475	/*
	476	* constant subs for IO::Poll
	477	*/
	478	stash = gv_stashpvn("IO::Poll", 8, TRUE);
	479	#ifdef POLLIN
	480	newCONSTSUB(stash,"POLLIN",newSViv(POLLIN));
	481	#endif
	482	#ifdef POLLPRI
	483	newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI));
	484	#endif
	485	#ifdef POLLOUT
	486	newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT));
	487	#endif
	488	#ifdef POLLRDNORM
	489	newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM));
	490	#endif
	491	#ifdef POLLWRNORM
	492	newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM));
	493	#endif
	494	#ifdef POLLRDBAND
	495	newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND));
	496	#endif
	497	#ifdef POLLWRBAND
	498	newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND));
	499	#endif
	500	#ifdef POLLNORM
	501	newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM));
	502	#endif
	503	#ifdef POLLERR
	504	newCONSTSUB(stash,"POLLERR", newSViv(POLLERR));
	505	#endif
	506	#ifdef POLLHUP
	507	newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP));
	508	#endif
	509	#ifdef POLLNVAL
	510	newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL));
	511	#endif
	512	/*
	513	* constant subs for IO::Handle
	514	*/
	515	stash = gv_stashpvn("IO::Handle", 10, TRUE);
	516	#ifdef _IOFBF
	517	newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF));
	518	#endif
	519	#ifdef _IOLBF
	520	newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF));
	521	#endif
	522	#ifdef _IONBF
	523	newCONSTSUB(stash,"_IONBF", newSViv(_IONBF));
	524	#endif
	525	#ifdef SEEK_SET
	526	newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET));
	527	#endif
	528	#ifdef SEEK_CUR
	529	newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR));
	530	#endif
	531	#ifdef SEEK_END
	532	newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END));
	533	#endif
cf7fe8a2	534	}
63a347c7	535