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/*
* Copyright (c) 2003 Gunnar Ritter
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute
* it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source distribution.
*/
/* Sccsid @(#)ib_read.c 1.2 (gritter) 4/17/03 */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include "iblok.h"
int
ib_read(struct iblok *ip)
{
ssize_t sz;
do {
if ((sz = read(ip->ib_fd, ip->ib_blk, ip->ib_blksize)) > 0) {
ip->ib_endoff += sz;
ip->ib_cur = ip->ib_blk;
ip->ib_end = &ip->ib_blk[sz];
return *ip->ib_cur++ & 0377;
}
} while (sz < 0 && errno == EINTR);
if (sz < 0)
ip->ib_errno = errno;
ip->ib_cur = ip->ib_end = NULL;
return EOF;
}
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