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/*
* Copyright (C) 2013-2017 Canonical, Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* This code is a complete clean re-write of the stress tool by
* Colin Ian King <colin.king@canonical.com> and attempts to be
* backwardly compatible with the stress tool by Amos Waterland
* <apw@rossby.metr.ou.edu> but has more stress tests and more
* functionality.
*
*/
#include "stress-ng.h"
#if defined(__linux__)
#include <sys/personality.h>
/* Personalities are determined at build time */
static const unsigned long personalities[] = {
#include "personality.h"
};
/*
* stress_personality()
* stress system by rapid open/close calls
*/
int stress_personality(
uint64_t *const counter,
const uint32_t instance,
const uint64_t max_ops,
const char *name)
{
const ssize_t n = SIZEOF_ARRAY(personalities);
bool failed[n];
(void)instance;
if (n == 0) {
pr_inf(stdout, "%s: no personalities to stress test\n", name);
return EXIT_NOT_IMPLEMENTED;
}
memset(failed, 0, sizeof(failed));
if (instance == 0)
pr_dbg(stderr, "%s: exercising %zu personalities\n", name, n);
do {
ssize_t i, fails = 0;
for (i = 0; i < n; i++) {
unsigned long p = personalities[i];
int ret;
if (!opt_do_run)
break;
if (failed[i]) {
fails++;
continue;
}
ret = personality(p);
if (ret < 0) {
failed[i] = true;
continue;
}
ret = personality(~0UL);
if ((opt_flags & OPT_FLAGS_VERIFY) &&
(ret & 0xff) != (p & 0xff)) {
pr_fail(stderr, "%s: fetched personality does "
"not match set personality 0x%lu\n",
name, p);
}
}
if (fails == n) {
pr_fail(stderr, "%s: all %zu personalities failed "
"to be set\n", name, fails);
break;
}
(*counter)++;
} while (opt_do_run && (!max_ops || *counter < max_ops));
return EXIT_SUCCESS;
}
#else
int stress_personality(
uint64_t *const counter,
const uint32_t instance,
const uint64_t max_ops,
const char *name)
{
return stress_not_implemented(counter, instance, max_ops, name);
}
#endif
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