/* $NetBSD: getmntinfo.c,v 1.1 2012/03/17 16:33:11 jruoho Exp $ */
/*
* Copyright (c) 2007 The NetBSD Foundation, Inc.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include <err.h>
#include <stdlib.h>
#include <string.h>
#define KB * 1024
#define MB * 1024 KB
#define GB * 1024 MB
static struct statvfs *getnewstatvfs(void);
static void other_variants(const struct statvfs *, const int *, int,
const int *, int);
static void setup_filer(void);
static void setup_ld0g(void);
static void setup_strpct(void);
static struct statvfs *allstatvfs;
static int sftotal, sfused;
struct statvfs *
getnewstatvfs(void)
{
if (sftotal == sfused) {
sftotal = sftotal ? sftotal * 2 : 1;
allstatvfs = realloc(allstatvfs,
sftotal * sizeof(struct statvfs));
if (allstatvfs == NULL)
err(EXIT_FAILURE, "realloc");
}
return (&allstatvfs[sfused++]);
}
void
other_variants(const struct statvfs *tmpl, const int *minfree, int minfreecnt,
const int *consumed, int consumedcnt)
{
int64_t total, used;
struct statvfs *sf;
int i, j;
for (i = 0; i < minfreecnt; i++)
for (j = 0; j < consumedcnt; j++) {
sf = getnewstatvfs();
*sf = *tmpl;
total = (int64_t)(u_long)sf->f_blocks * sf->f_bsize;
used = total * consumed[j] / 100;
sf->f_bfree = (total - used) / sf->f_bsize;
sf->f_bavail = (total * (100 - minfree[i]) / 100 -
used) / (int)sf->f_bsize;
sf->f_bresvd = sf->f_bfree - sf->f_bavail;
}
}
/*
* Parameter taken from:
*
http://mail-index.NetBSD.org/tech-userlevel/2004/03/24/0001.html
*/
void
setup_filer(void)
{
static const struct statvfs tmpl = {
#define BSIZE 512
#define TOTAL 1147ULL GB
#define USED 132ULL MB
.f_bsize = BSIZE,
.f_frsize = BSIZE,
.f_blocks = TOTAL / BSIZE,
.f_bfree = (TOTAL - USED) / BSIZE,
.f_bavail = (TOTAL - USED) / BSIZE,
.f_bresvd = 0,
.f_mntfromname = "filer:/",
.f_mntonname = "/filer",
#undef USED
#undef TOTAL
#undef BSIZE
};
static const int minfree[] = { 0, 5, 10, 15, };
static const int consumed[] = { 0, 20, 60, 95, 100 };
*getnewstatvfs() = tmpl;
other_variants(&tmpl, minfree, sizeof(minfree) / sizeof(minfree[0]),
consumed, sizeof(consumed) / sizeof(consumed[0]));
}
/*
* Parameter taken from:
*
http://mail-index.NetBSD.org/current-users/2004/03/01/0038.html
*/
void
setup_ld0g(void)
{
static const struct statvfs tmpl = {
#define BSIZE 4096 /* Guess */
#define TOTAL 1308726116ULL KB
#define USED 17901268ULL KB
#define AVAIL 1225388540ULL KB
.f_bsize = BSIZE,
.f_frsize = BSIZE,
.f_blocks = TOTAL / BSIZE,
.f_bfree = (TOTAL - USED) / BSIZE,
.f_bavail = AVAIL / BSIZE,
.f_bresvd = (TOTAL - USED) / BSIZE - AVAIL / BSIZE,
.f_mntfromname = "/dev/ld0g",
.f_mntonname = "/anon-root",
#undef AVAIL
#undef USED
#undef TOTAL
#undef BSIZE
};
static const int minfree[] = { 0, 5, 10, 15, };
static const int consumed[] = { 0, 20, 60, 95, 100 };
*getnewstatvfs() = tmpl;
other_variants(&tmpl, minfree, sizeof(minfree) / sizeof(minfree[0]),
consumed, sizeof(consumed) / sizeof(consumed[0]));
}
/*
* Test of strpct() with huge number.
*/
void
setup_strpct(void)
{
static const struct statvfs tmpl = {
#define BSIZE 4096 /* Guess */
#define TOTAL 0x4ffffffffULL KB
#define USED (TOTAL / 2)
#define AVAIL (TOTAL / 2)
.f_bsize = BSIZE,
.f_frsize = BSIZE,
.f_blocks = TOTAL / BSIZE,
.f_bfree = (TOTAL - USED) / BSIZE,
.f_bavail = AVAIL / BSIZE,
.f_bresvd = (TOTAL - USED) / BSIZE - AVAIL / BSIZE,
.f_mntfromname = "/dev/strpct",
.f_mntonname = "/strpct",
#undef AVAIL
#undef USED
#undef TOTAL
#undef BSIZE
};
*getnewstatvfs() = tmpl;
}
/*
* Parameter taken from:
*
http://www.netbsd.org/cgi-bin/query-pr-single.pl?number=23600
*/
static void
setup_pr23600(void)
{
static const struct statvfs tmpl = {
#define BSIZE 512
#define TOTAL 20971376ULL
#define USED 5719864ULL
#define AVAIL 15251512ULL
.f_bsize = BSIZE,
.f_frsize = BSIZE,
.f_blocks = TOTAL,
.f_bfree = TOTAL - USED,
.f_bavail = AVAIL,
.f_bresvd = TOTAL - USED - AVAIL,
.f_mntfromname = "/dev/wd0e",
.f_mntonname = "/mount/windows/C",
#undef AVAIL
#undef USED
#undef TOTAL
#undef BSIZE
};
*getnewstatvfs() = tmpl;
}
int
getmntinfo(struct statvfs **mntbuf, int flags)
{
setup_filer();
setup_ld0g();
setup_strpct();
setup_pr23600();
*mntbuf = allstatvfs;
return (sfused);
}
