[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

#ifndef __attribute__noreturn__
#  define __attribute__noreturn__
#endif

#ifndef NORETURN_FUNCTION_END
# define NORETURN_FUNCTION_END /* NOT REACHED */ return 0
#endif

static int not_here(const char *s) __attribute__noreturn__;
static int
not_here(const char *s)
{
    croak("%s not implemented on this architecture", s);
    NORETURN_FUNCTION_END;
}


#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;
	int newmode = mode;
#ifdef O_NONBLOCK
	/* POSIX style */

# ifndef O_NDELAY
#  define O_NDELAY O_NONBLOCK
# endif
	/* Note: 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) {
	    newmode &= ~O_NDELAY;
	    newmode |= O_NONBLOCK;
	} else if (block > 0) {
	    newmode &= ~(O_NDELAY|O_NONBLOCK);
	}
#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) {
	    newmode |= O_NDELAY;
	} else if (block > 0) {
	    newmode &= ~O_NDELAY;
	}
#endif
	if (newmode != mode) {
	    const int ret = fcntl(PerlIO_fileno(f),F_SETFL,newmode);
	    if (ret < 0)
		RETVAL = ret;
	}
    }
    return RETVAL;
#else
    return -1;
#endif
}

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

void
fgetpos(handle)
	InputStream	handle
    CODE:
	if (handle) {
#ifdef PerlIO
#if PERL_VERSION < 8
	    Fpos_t pos;
	    ST(0) = sv_newmortal();
	    if (PerlIO_getpos(handle, &pos) != 0) {
		ST(0) = &PL_sv_undef;
	    }
	    else {
		sv_setpvn(ST(0), (char *)&pos, sizeof(Fpos_t));
	    }
#else
	    ST(0) = sv_newmortal();
	    if (PerlIO_getpos(handle, ST(0)) != 0) {
		ST(0) = &PL_sv_undef;
	    }
#endif
#else
	    Fpos_t pos;
	    if (fgetpos(handle, &pos)) {
		ST(0) = &PL_sv_undef;
	    } else {
		ST(0) = sv_2mortal(newSVpvn((char*)&pos, sizeof(Fpos_t)));
	    }
#endif
	}
	else {
	    errno = EINVAL;
	    ST(0) = &PL_sv_undef;
	}

SysRet
fsetpos(handle, pos)
	InputStream	handle
	SV *		pos
    CODE:
	if (handle) {
#ifdef PerlIO
#if PERL_VERSION < 8
	    char *p;
	    STRLEN len;
	    if (SvOK(pos) && (p = SvPV(pos,len)) && len == sizeof(Fpos_t)) {
		RETVAL = PerlIO_setpos(handle, (Fpos_t*)p);
	    }
	    else {
		RETVAL = -1;
		errno = EINVAL;
	    }
#else
	    RETVAL = PerlIO_setpos(handle, pos);
#endif
#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));
	if (gv)
	    hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD);
	if (gv && 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
    const 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:
{
    const 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
35a60386 RGS	52	#ifndef __attribute__noreturn__
	53	# define __attribute__noreturn__
	54	#endif
	55
	56	#ifndef NORETURN_FUNCTION_END
	57	# define NORETURN_FUNCTION_END /* NOT REACHED */ return 0
	58	#endif
	59
7698c435	60	static int not_here(const char *s) __attribute__noreturn__;
8add82fc	61	static int
7698c435	62	not_here(const char *s)
8add82fc	63	{
8add82fc	64	croak("%s not implemented on this architecture", s);
c38693a5	65	NORETURN_FUNCTION_END;
8add82fc	66	}
8add82fc	67
cf7fe8a2 GS	68
	69	#ifndef PerlIO
	70	#define PerlIO_fileno(f) fileno(f)
8add82fc	71	#endif
cf7fe8a2 GS	72
cf7fe8a2 GS	73	static int
e87a358a	74	io_blocking(pTHX_ InputStream f, int block)
cf7fe8a2	75	{
91f3b821	76	#if defined(HAS_FCNTL)
cf7fe8a2 GS	77	int RETVAL;
	78	if(!f) {
	79	errno = EBADF;
	80	return -1;
	81	}
cf7fe8a2 GS	82	RETVAL = fcntl(PerlIO_fileno(f), F_GETFL, 0);
	83	if (RETVAL >= 0) {
	84	int mode = RETVAL;
3b2f3eeb	85	int newmode = mode;
cf7fe8a2	86	#ifdef O_NONBLOCK
766a733e	87	/* POSIX style */
cf7fe8a2	88
3b2f3eeb BD	89	# ifndef O_NDELAY
	90	# define O_NDELAY O_NONBLOCK
	91	# endif
	92	/* Note: UNICOS and UNICOS/mk a F_GETFL returns an O_NDELAY
6fd254a4 JH	93	* after a successful F_SETFL of an O_NONBLOCK. */
	94	RETVAL = RETVAL & (O_NONBLOCK \| O_NDELAY) ? 0 : 1;
	95
3b2f3eeb BD	96	if (block == 0) {
	97	newmode &= ~O_NDELAY;
	98	newmode \|= O_NONBLOCK;
	99	} else if (block > 0) {
	100	newmode &= ~(O_NDELAY\|O_NONBLOCK);
cf7fe8a2	101	}
8add82fc	102	#else
cf7fe8a2 GS	103	/* Not POSIX - better have O_NDELAY or we can't cope.
cf7fe8a2 GS	104	* for BSD-ish machines this is an acceptable alternative
766a733e	105	* for SysV we can't tell "would block" from EOF but that is
cf7fe8a2 GS	106	* the way SysV is...
	107	*/
	108	RETVAL = RETVAL & O_NDELAY ? 0 : 1;
	109
3b2f3eeb BD	110	if (block == 0) {
	111	newmode \|= O_NDELAY;
	112	} else if (block > 0) {
	113	newmode &= ~O_NDELAY;
	114	}
	115	#endif
	116	if (newmode != mode) {
7698c435	117	const int ret = fcntl(PerlIO_fileno(f),F_SETFL,newmode);
3b2f3eeb	118	if (ret < 0)
cf7fe8a2	119	RETVAL = ret;
3b2f3eeb	120	}
cf7fe8a2 GS	121	}
cf7fe8a2 GS	122	return RETVAL;
8add82fc	123	#else
91f3b821	124	return -1;
8add82fc	125	#endif
8add82fc	126	}
8add82fc	127
8add82fc	128	MODULE = IO PACKAGE = IO::Seekable PREFIX = f
8add82fc	129
8063af02	130	void
8add82fc	131	fgetpos(handle)
	132	InputStream handle
	133	CODE:
8add82fc	134	if (handle) {
2a0cf753	135	#ifdef PerlIO
35a60386	136	#if PERL_VERSION < 8
86413ec0 SH	137	Fpos_t pos;
86413ec0 SH	138	ST(0) = sv_newmortal();
35a60386 RGS	139	if (PerlIO_getpos(handle, &pos) != 0) {
	140	ST(0) = &PL_sv_undef;
	141	}
	142	else {
	143	sv_setpvn(ST(0), (char *)&pos, sizeof(Fpos_t));
	144	}
	145	#else
86413ec0	146	ST(0) = sv_newmortal();
766a733e NIS	147	if (PerlIO_getpos(handle, ST(0)) != 0) {
	148	ST(0) = &PL_sv_undef;
	149	}
35a60386	150	#endif
2a0cf753	151	#else
35a60386	152	Fpos_t pos;
766a733e	153	if (fgetpos(handle, &pos)) {
a6a714bd NC	154	ST(0) = &PL_sv_undef;
a6a714bd NC	155	} else {
35a60386	156	ST(0) = sv_2mortal(newSVpvn((char*)&pos, sizeof(Fpos_t)));
a6a714bd	157	}
766a733e	158	#endif
8add82fc	159	}
8add82fc	160	else {
8add82fc	161	errno = EINVAL;
35a60386	162	ST(0) = &PL_sv_undef;
8add82fc	163	}
8add82fc	164
	165	SysRet
	166	fsetpos(handle, pos)
	167	InputStream handle
	168	SV * pos
	169	CODE:
766a733e	170	if (handle) {
2a0cf753	171	#ifdef PerlIO
35a60386 RGS	172	#if PERL_VERSION < 8
	173	char *p;
	174	STRLEN len;
	175	if (SvOK(pos) && (p = SvPV(pos,len)) && len == sizeof(Fpos_t)) {
	176	RETVAL = PerlIO_setpos(handle, (Fpos_t*)p);
	177	}
	178	else {
	179	RETVAL = -1;
	180	errno = EINVAL;
	181	}
	182	#else
766a733e	183	RETVAL = PerlIO_setpos(handle, pos);
35a60386	184	#endif
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")
35a60386	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	218	gv = (GV*)SvREFCNT_inc(newGVgen(packname));
71cd1c3f NC	219	if (gv)
	220	hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD);
	221	if (gv && do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) {
6d5cdeed	222	ST(0) = sv_2mortal(newRV((SV*)gv));
a375a877	223	sv_bless(ST(0), gv_stashpv(packname, TRUE));
cf7fe8a2	224	SvREFCNT_dec(gv); /* undo increment in newRV() */
a375a877 GB	225	}
a375a877 GB	226	else {
a1ea39dc	227	ST(0) = &PL_sv_undef;
a375a877 GB	228	SvREFCNT_dec(gv);
a375a877 GB	229	}
8add82fc	230
cf7fe8a2 GS	231	MODULE = IO PACKAGE = IO::Poll
cf7fe8a2 GS	232
766a733e	233	void
cf7fe8a2 GS	234	_poll(timeout,...)
	235	int timeout;
	236	PPCODE:
	237	{
	238	#ifdef HAS_POLL
7698c435	239	const int nfd = (items - 1) / 2;
cf7fe8a2 GS	240	SV tmpsv = NEWSV(999,nfd sizeof(struct pollfd));
	241	struct pollfd fds = (struct pollfd )SvPVX(tmpsv);
	242	int i,j,ret;
	243	for(i=1, j=0 ; j < nfd ; j++) {
	244	fds[j].fd = SvIV(ST(i));
	245	i++;
7c436af3	246	fds[j].events = (short)SvIV(ST(i));
cf7fe8a2 GS	247	i++;
	248	fds[j].revents = 0;
	249	}
	250	if((ret = poll(fds,nfd,timeout)) >= 0) {
	251	for(i=1, j=0 ; j < nfd ; j++) {
	252	sv_setiv(ST(i), fds[j].fd); i++;
	253	sv_setiv(ST(i), fds[j].revents); i++;
	254	}
	255	}
	256	SvREFCNT_dec(tmpsv);
	257	XSRETURN_IV(ret);
	258	#else
	259	not_here("IO::Poll::poll");
	260	#endif
	261	}
	262
	263	MODULE = IO PACKAGE = IO::Handle PREFIX = io_
	264
	265	void
	266	io_blocking(handle,blk=-1)
	267	InputStream handle
	268	int blk
	269	PROTOTYPE: $;$
	270	CODE:
	271	{
7698c435	272	const int ret = io_blocking(aTHX_ handle, items == 1 ? -1 : blk ? 1 : 0);
cf7fe8a2 GS	273	if(ret >= 0)
	274	XSRETURN_IV(ret);
	275	else
	276	XSRETURN_UNDEF;
	277	}
	278
8add82fc	279	MODULE = IO PACKAGE = IO::Handle PREFIX = f
8add82fc	280
8add82fc	281	int
	282	ungetc(handle, c)
	283	InputStream handle
	284	int c
	285	CODE:
	286	if (handle)
2a0cf753	287	#ifdef PerlIO
760ac839	288	RETVAL = PerlIO_ungetc(handle, c);
2a0cf753	289	#else
	290	RETVAL = ungetc(c, handle);
	291	#endif
8add82fc	292	else {
	293	RETVAL = -1;
	294	errno = EINVAL;
	295	}
	296	OUTPUT:
	297	RETVAL
	298
	299	int
	300	ferror(handle)
	301	InputStream handle
	302	CODE:
	303	if (handle)
2a0cf753	304	#ifdef PerlIO
760ac839	305	RETVAL = PerlIO_error(handle);
2a0cf753	306	#else
	307	RETVAL = ferror(handle);
	308	#endif
	309	else {
	310	RETVAL = -1;
	311	errno = EINVAL;
	312	}
	313	OUTPUT:
	314	RETVAL
	315
	316	int
	317	clearerr(handle)
	318	InputStream handle
	319	CODE:
	320	if (handle) {
	321	#ifdef PerlIO
	322	PerlIO_clearerr(handle);
	323	#else
	324	clearerr(handle);
	325	#endif
	326	RETVAL = 0;
	327	}
8add82fc	328	else {
8add82fc	329	RETVAL = -1;
59629a13 RR	330	errno = EINVAL;
	331	}
	332	OUTPUT:
	333	RETVAL
	334
	335	int
	336	untaint(handle)
	337	SV * handle
	338	CODE:
7a4c00b4	339	#ifdef IOf_UNTAINT
59629a13 RR	340	IO * io;
	341	io = sv_2io(handle);
	342	if (io) {
	343	IoFLAGS(io) \|= IOf_UNTAINT;
	344	RETVAL = 0;
	345	}
	346	else {
7a4c00b4	347	#endif
59629a13	348	RETVAL = -1;
8add82fc	349	errno = EINVAL;
7a4c00b4	350	#ifdef IOf_UNTAINT
8add82fc	351	}
7a4c00b4	352	#endif
8add82fc	353	OUTPUT:
	354	RETVAL
	355
	356	SysRet
	357	fflush(handle)
	358	OutputStream handle
	359	CODE:
	360	if (handle)
2a0cf753	361	#ifdef PerlIO
760ac839	362	RETVAL = PerlIO_flush(handle);
2a0cf753	363	#else
	364	RETVAL = Fflush(handle);
	365	#endif
8add82fc	366	else {
	367	RETVAL = -1;
	368	errno = EINVAL;
	369	}
	370	OUTPUT:
	371	RETVAL
	372
	373	void
c46a0ec2	374	setbuf(handle, ...)
8add82fc	375	OutputStream handle
8add82fc	376	CODE:
8add82fc	377	if (handle)
760ac839	378	#ifdef PERLIO_IS_STDIO
c46a0ec2 JH	379	{
	380	char *buf = items == 2 && SvPOK(ST(1)) ?
	381	sv_grow(ST(1), BUFSIZ) : 0;
8add82fc	382	setbuf(handle, buf);
c46a0ec2	383	}
760ac839 LW	384	#else
	385	not_here("IO::Handle::setbuf");
	386	#endif
8add82fc	387
8add82fc	388	SysRet
c46a0ec2	389	setvbuf(...)
8add82fc	390	CODE:
c46a0ec2 JH	391	if (items != 4)
c46a0ec2 JH	392	Perl_croak(aTHX_ "Usage: IO::Handle::setvbuf(handle, buf, type, size)");
1eeb0f31	393	#if defined(PERLIO_IS_STDIO) && defined(_IOFBF) && defined(HAS_SETVBUF)
c46a0ec2 JH	394	{
	395	OutputStream handle = 0;
	396	char * buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
	397	int type;
	398	int size;
	399
	400	if (items == 4) {
	401	handle = IoOFP(sv_2io(ST(0)));
	402	buf = SvPOK(ST(1)) ? sv_grow(ST(1), SvIV(ST(3))) : 0;
	403	type = (int)SvIV(ST(2));
	404	size = (int)SvIV(ST(3));
	405	}
d924de76 IZ	406	if (!handle) /* Try input stream. */
d924de76 IZ	407	handle = IoIFP(sv_2io(ST(0)));
c46a0ec2	408	if (items == 4 && handle)
8add82fc	409	RETVAL = setvbuf(handle, buf, type, size);
	410	else {
	411	RETVAL = -1;
	412	errno = EINVAL;
	413	}
c46a0ec2	414	}
8add82fc	415	#else
61839fa9	416	RETVAL = (SysRet) not_here("IO::Handle::setvbuf");
760ac839	417	#endif
8add82fc	418	OUTPUT:
	419	RETVAL
	420
	421
cf7fe8a2 GS	422	SysRet
	423	fsync(handle)
	424	OutputStream handle
	425	CODE:
	426	#ifdef HAS_FSYNC
	427	if(handle)
	428	RETVAL = fsync(PerlIO_fileno(handle));
	429	else {
	430	RETVAL = -1;
	431	errno = EINVAL;
	432	}
	433	#else
	434	RETVAL = (SysRet) not_here("IO::Handle::sync");
	435	#endif
	436	OUTPUT:
	437	RETVAL
	438
	439
63a347c7 JH	440	MODULE = IO PACKAGE = IO::Socket
	441
	442	SysRet
	443	sockatmark (sock)
	444	InputStream sock
	445	PROTOTYPE: $
	446	PREINIT:
06c912bc	447	int fd;
63a347c7 JH	448	CODE:
	449	{
	450	fd = PerlIO_fileno(sock);
	451	#ifdef HAS_SOCKATMARK
06c912bc	452	RETVAL = sockatmark(fd);
63a347c7	453	#else
06c912bc JH	454	{
06c912bc JH	455	int flag = 0;
6d087280	456	# ifdef SIOCATMARK
6e22d046	457	# if defined(NETWARE) \|\| defined(WIN32)
2986a63f	458	if (ioctl(fd, SIOCATMARK, (void*)&flag) != 0)
f754b6e0 GS	459	# else
	460	if (ioctl(fd, SIOCATMARK, &flag) != 0)
	461	# endif
06c912bc	462	XSRETURN_UNDEF;
63a347c7	463	# else
06c912bc JH	464	not_here("IO::Socket::atmark");
	465	# endif
	466	RETVAL = flag;
	467	}
63a347c7 JH	468	#endif
	469	}
	470	OUTPUT:
	471	RETVAL
	472
cf7fe8a2 GS	473	BOOT:
	474	{
	475	HV *stash;
	476	/*
	477	* constant subs for IO::Poll
	478	*/
	479	stash = gv_stashpvn("IO::Poll", 8, TRUE);
	480	#ifdef POLLIN
	481	newCONSTSUB(stash,"POLLIN",newSViv(POLLIN));
	482	#endif
	483	#ifdef POLLPRI
	484	newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI));
	485	#endif
	486	#ifdef POLLOUT
	487	newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT));
	488	#endif
	489	#ifdef POLLRDNORM
	490	newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM));
	491	#endif
	492	#ifdef POLLWRNORM
	493	newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM));
	494	#endif
	495	#ifdef POLLRDBAND
	496	newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND));
	497	#endif
	498	#ifdef POLLWRBAND
	499	newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND));
	500	#endif
	501	#ifdef POLLNORM
	502	newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM));
	503	#endif
	504	#ifdef POLLERR
	505	newCONSTSUB(stash,"POLLERR", newSViv(POLLERR));
	506	#endif
	507	#ifdef POLLHUP
	508	newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP));
	509	#endif
	510	#ifdef POLLNVAL
	511	newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL));
	512	#endif
	513	/*
	514	* constant subs for IO::Handle
	515	*/
	516	stash = gv_stashpvn("IO::Handle", 10, TRUE);
	517	#ifdef _IOFBF
	518	newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF));
	519	#endif
	520	#ifdef _IOLBF
	521	newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF));
	522	#endif
	523	#ifdef _IONBF
	524	newCONSTSUB(stash,"_IONBF", newSViv(_IONBF));
	525	#endif
	526	#ifdef SEEK_SET
	527	newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET));
	528	#endif
	529	#ifdef SEEK_CUR
	530	newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR));
	531	#endif
	532	#ifdef SEEK_END
	533	newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END));
	534	#endif
cf7fe8a2	535	}
63a347c7	536