/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "../common/compat.h"
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/syscall.h>
/*
* If reading from the utmp file, map the data to the SunOS 4.1
* format on the fly.
*/
extern void to_utmp(char *, char *, int);
int
read(int fd, char *buf, int size)
{
return (bc_read(fd, buf, size));
}
int
bc_read(int fd, char *buf, int size)
{
int ret, off;
char *nbuf;
if (fd_get(fd) != -1) { /* we're reading utmp (utmpx, really) */
size = getmodsize(size, sizeof (struct compat_utmp),
sizeof (struct utmpx));
if ((nbuf = (void *)malloc(size)) == NULL) {
(void) fprintf(stderr, "read: malloc failed\n");
exit(-1);
}
if ((ret = _read(fd, nbuf, size)) == -1) {
free(nbuf);
return (-1);
}
to_utmp(buf, nbuf, ret);
ret = getmodsize(ret, sizeof (struct utmpx),
sizeof (struct compat_utmp));
free(nbuf);
return (ret);
}
return (_read(fd, buf, size));
}
void
to_utmp(char *buf, char *nbuf, int len)
{
struct compat_utmp *ut;
struct utmpx *utx;
utx = (struct utmpx *)nbuf;
ut = (struct compat_utmp *)buf;
while ((char *)utx < (nbuf + len)) {
(void) strncpy(ut->ut_line, utx->ut_line, sizeof (ut->ut_line));
(void) strncpy(ut->ut_name, utx->ut_user, sizeof (ut->ut_name));
(void) strncpy(ut->ut_host, utx->ut_host, sizeof (ut->ut_host));
ut->ut_time = utx->ut_tv.tv_sec;
utx++;
ut++;
}
}