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/*
* Copyright (C) 2014-2021 Canonical, Ltd.
* Copyright (C) 2022-2025 Colin Ian King
*
* 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.
*
*/
#include "stress-ng.h"
#include "core-limit.h"
static const shim_rlimit_resource_t limits[] = {
#if defined(RLIMIT_AS)
RLIMIT_AS,
#endif
#if defined(RLIMIT_CPU)
RLIMIT_CPU,
#endif
#if defined(RLIMIT_DATA)
RLIMIT_DATA,
#endif
#if defined(RLIMIT_FSIZE)
RLIMIT_FSIZE,
#endif
#if defined(RLIMIT_LOCKS)
RLIMIT_LOCKS,
#endif
#if defined(RLIMIT_MEMLOCK)
RLIMIT_MEMLOCK,
#endif
#if defined(RLIMIT_MSGQUEUE)
RLIMIT_MSGQUEUE,
#endif
#if defined(RLIMIT_NICE)
RLIMIT_NICE,
#endif
#if defined(RLIMIT_NOFILE)
RLIMIT_NOFILE,
#endif
#if defined(RLIMIT_NPROC)
RLIMIT_NPROC,
#endif
#if defined(RLIMIT_RSS)
RLIMIT_RSS,
#endif
#if defined(RLIMIT_RTPRIO)
RLIMIT_RTPRIO,
#endif
#if defined(RLIMIT_RTTIME)
RLIMIT_RTTIME,
#endif
#if defined(RLIMIT_SIGPENDING)
RLIMIT_SIGPENDING,
#endif
#if defined(RLIMIT_STACK)
RLIMIT_STACK
#endif
};
/*
* stress_set_max_limits()
* push rlimits to maximum values allowed
* so we can stress a system to the maximum,
* we ignore any rlimit errors.
*/
void stress_set_max_limits(void)
{
size_t i;
struct rlimit rlim;
for (i = 0; i < SIZEOF_ARRAY(limits); i++) {
if (UNLIKELY(getrlimit(limits[i], &rlim) < 0))
continue;
rlim.rlim_cur = rlim.rlim_max;
(void)setrlimit(limits[i], &rlim);
}
#if defined(RLIMIT_NOFILE)
{
uint64_t max_fd = 0;
(void)stress_get_setting("max-fd", &max_fd);
if (max_fd != 0) {
rlim.rlim_cur = (rlim_t)max_fd + 1;
rlim.rlim_max = (rlim_t)max_fd + 1;
(void)setrlimit(RLIMIT_NOFILE, &rlim);
}
}
#endif
}
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