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/*
* This file has been modified for the cdrkit suite.
*
* The behaviour and appearence of the program code below can differ to a major
* extent from the version distributed by the original author(s).
*
* For details, see Changelog file distributed with the cdrkit package. If you
* received this file from another source then ask the distributing person for
* a log of modifications.
*
*/
/* @(#)nixread.c 1.12 04/08/08 Copyright 1986, 1996-2003 J. Schilling */
/*
* Non interruptable extended read
*
* Copyright (c) 1986, 1996-2003 J. Schilling
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; see the file COPYING. If not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "schilyio.h"
#include <errno.h>
EXPORT int
_nixread(f, buf, count)
int f;
void *buf;
int count;
{
register char *p = (char *)buf;
register int ret;
register int total = 0;
int oerrno = geterrno();
while (count > 0) {
while ((ret = read(f, p, count)) < 0) {
if (geterrno() == EINTR) {
/*
* Set back old 'errno' so we don't change the
* errno visible to the outside if we did
* not fail.
*/
seterrno(oerrno);
continue;
}
return (ret); /* Any other error */
}
if (ret == 0) /* Something went wrong */
break;
total += ret;
count -= ret;
p += ret;
}
return (total);
}
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