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/*-
* Copyright (c) 2009 Konstantin Belousov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/fs/procfs/procfs_osrel.c 197428 2009-09-23 12:08:08Z kib $");
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/sbuf.h>
#include <sys/uio.h>
#include <fs/pseudofs/pseudofs.h>
#include <fs/procfs/procfs.h>
int
procfs_doosrel(PFS_FILL_ARGS)
{
const char *pp;
int ov, osrel, i;
if (uio == NULL)
return (EOPNOTSUPP);
if (uio->uio_rw == UIO_READ) {
sbuf_printf(sb, "%d\n", p->p_osrel);
} else {
sbuf_trim(sb);
sbuf_finish(sb);
pp = sbuf_data(sb);
osrel = 0;
i = sbuf_len(sb);
while (i--) {
if (*pp < '0' || *pp > '9')
return (EINVAL);
ov = osrel * 10 + *pp++ - '0';
if (ov < osrel)
return (EINVAL);
osrel = ov;
}
p->p_osrel = osrel;
}
return (0);
}