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/*-
* Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
* 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 AUTHOR 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 AUTHOR 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.
*
*/
/* Get various resource limits for the tests */
#include <sys/types.h>
#include <sys/sysctl.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <kvm.h>
#include <vm/vm_param.h>
#include <errno.h>
#include <err.h>
#include <stdarg.h>
#include <libutil.h>
#include "stress.h"
static int lockfd;
static int dffd;
static int flags;
static char lockpath[128];
static char dfpath[128];
static int64_t
inodes(void)
{
char path[MAXPATHLEN+1];
struct statfs buf;
if (op->inodes != 0)
return (op->inodes);
if (getcwd(path, sizeof(path)) == NULL)
err(1, "getcwd()");
if (statfs(path, &buf) < 0)
err(1, "statfs(%s)", path);
if (!strcmp(buf.f_fstypename, "msdosfs"))
buf.f_ffree = 9999;
flags = buf.f_flags & MNT_VISFLAGMASK;
if (op->verbose > 2)
printf("Free inodes on %s (%s): %jd\n", path,
buf.f_mntonname, buf.f_ffree);
return (buf.f_ffree);
}
static int64_t
df(void)
{
char path[MAXPATHLEN+1];
struct statfs buf;
if (op->kblocks != 0)
return (op->kblocks * (uint64_t)1024);
if (getcwd(path, sizeof(path)) == NULL)
err(1, "getcwd()");
if (statfs(path, &buf) < 0)
err(1, "statfs(%s)", path);
if (buf.f_bavail > (int64_t)buf.f_blocks || buf.f_bavail < 0) {
warnx("Corrupt statfs(%s). f_bavail = %jd!", path,
buf.f_bavail);
buf.f_bavail = 100;
}
if (op->verbose > 2)
printf("Free space on %s: %jd Mb\n", path, buf.f_bavail *
buf.f_bsize / 1024 / 1024);
return (buf.f_bavail * buf.f_bsize);
}
int64_t
swap(void)
{
struct xswdev xsw;
size_t mibsize, size;
int mib[16], n;
int64_t sz;
mibsize = sizeof mib / sizeof mib[0];
sz = 0;
if (sysctlnametomib("vm.swap_info", mib, &mibsize) == -1)
err(1, "sysctlnametomib()");
for (n = 0; ; ++n) {
mib[mibsize] = n;
size = sizeof xsw;
if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, 0) == -1)
break;
if (xsw.xsw_version != XSWDEV_VERSION)
errx(1, "xswdev version mismatch");
sz = sz + xsw.xsw_nblks - xsw.xsw_used;
}
if (errno != ENOENT)
err(1, "sysctl()");
if (op->verbose > 2)
printf("Total free swap space %jd Mb\n",
sz * getpagesize() / 1024 / 1024);
return (sz * getpagesize());
}
unsigned long
usermem(void)
{
unsigned long mem;
size_t nlen = sizeof(mem);
if (sysctlbyname("hw.usermem", &mem, &nlen, NULL, 0) == -1)
err(1, "sysctlbyname() %s:%d", __FILE__, __LINE__);
if (op->verbose > 2)
printf("Total free user memory %lu Mb\n",
mem / 1024 / 1024);
return (mem);
}
static void
cleanupdf()
{
unlink(dfpath);
}
void
getdf(int64_t *block, int64_t *inode)
{
int i, j;
char buf[128];
snprintf(lockpath, sizeof(lockpath), "%s/lock", op->cd);
for (j = 0; j < 2; j++) {
for (i = 0; i < 10000; i++) {
if ((lockfd = open(lockpath,
O_CREAT | O_TRUNC | O_WRONLY |
O_EXCL, 0644)) != -1)
break;
usleep(10000); /* sleep 1/100 sec */
if (i > 0 && i % 1000 == 0)
fprintf(stderr, "%s is waiting for lock file"
" %s\n",
getprogname(), lockpath);
}
if (lockfd != -1)
break;
fprintf(stderr, "%s. Removing stale %s\n", getprogname(),
lockpath);
unlink(lockpath);
}
if (lockfd == -1)
errx(1, "%s. Can not create %s\n", getprogname(), lockpath);
snprintf(dfpath, sizeof(dfpath), "%s/df", op->cd);
if ((dffd = open(dfpath, O_RDWR, 0644)) == -1) {
if ((dffd = open(dfpath,
O_CREAT | O_TRUNC | O_WRONLY, 0644)) == -1) {
unlink(lockpath);
err(1, "creat(%s) %s:%d", dfpath, __FILE__,
__LINE__);
}
atexit(cleanupdf);
*block = df();
*inode = inodes();
snprintf(buf, sizeof(buf), "%jd %jd", *block, *inode);
if (write(dffd, buf, strlen(buf) + 1) !=
(ssize_t)strlen(buf) +1)
err(1, "write df. %s:%d", __FILE__, __LINE__);
} else {
if (read(dffd, buf, sizeof(buf)) < 1) {
system("ls -l /tmp/stressX.control");
unlink(lockpath);
err(1, "read df. %s:%d", __FILE__, __LINE__);
}
sscanf(buf, "%jd %jd", block, inode);
}
close(dffd);
}
void
reservedf(int64_t blks, int64_t inos)
{
char buf[128];
int64_t blocks, inodes;
if ((dffd = open(dfpath, O_RDWR, 0644)) == -1) {
warn("open(%s) %s:%d. %s", dfpath, __FILE__, __LINE__,
getprogname());
goto err;
}
if (read(dffd, buf, sizeof(buf)) < 1) {
warn("read df. %s:%d", __FILE__, __LINE__);
goto err;
}
sscanf(buf, "%jd %jd", &blocks, &inodes);
if (op->verbose > 2)
printf("%-8s: reservefd(%9jdK, %6jd) out of (%9jdK, %6jd)\n",
getprogname(), blks/1024, inos, blocks/1024,
inodes);
blocks -= blks;
inodes -= inos;
snprintf(buf, sizeof(buf), "%jd %jd", blocks, inodes);
if (blocks < 0 || inodes < 0)
printf("******************************** %s: %s\n",
getprogname(), buf);
if (lseek(dffd, 0, 0) == -1)
err(1, "lseek. %s:%d", __FILE__, __LINE__);
if (write(dffd, buf, strlen(buf) + 1) != (ssize_t)strlen(buf) +1)
warn("write df. %s:%d", __FILE__, __LINE__);
err:
close(dffd);
close(lockfd);
if (unlink(lockpath) == -1)
err(1, "unlink(%s)", lockpath);
}