blob: d787ce38b50b077071be466e13e941c94b4f1aef [file] [log] [blame]
/*
* Check decoding of getrlimit/ugetrlimit syscall.
*
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <sys/resource.h>
#include <unistd.h>
#include "kernel_types.h"
#include "xlat.h"
#include "xlat/resources.h"
const char *
sprint_rlim(kernel_ulong_t lim)
{
if (sizeof(lim) == sizeof(uint64_t)) {
if (lim == (kernel_ulong_t) -1ULL)
return "RLIM64_INFINITY";
} else {
if (lim == (kernel_ulong_t) -1U)
return "RLIM_INFINITY";
}
static char buf[2][sizeof(lim)*3 + sizeof("*1024")];
static int i;
i &= 1;
if (lim > 1024 && lim % 1024 == 0)
sprintf(buf[i], "%llu*1024", (unsigned long long) lim / 1024);
else
sprintf(buf[i], "%llu", (unsigned long long) lim);
return buf[i++];
}
#ifdef NR_GETRLIMIT
int
main(void)
{
kernel_ulong_t *const rlimit = tail_alloc(sizeof(*rlimit) * 2);
const struct xlat *xlat;
for (xlat = resources; xlat->str; ++xlat) {
unsigned long res = 0xfacefeed00000000 | xlat->val;
long rc = syscall(NR_GETRLIMIT, res, 0);
if (rc && ENOSYS == errno)
perror_msg_and_skip(STR_GETRLIMIT);
printf("%s(%s, NULL) = %ld %s (%m)\n",
STR_GETRLIMIT, xlat->str, rc, errno2name());
rc = syscall(NR_GETRLIMIT, res, rlimit);
if (rc)
printf("%s(%s, NULL) = %ld %s (%m)\n",
STR_GETRLIMIT, xlat->str, rc, errno2name());
else
printf("%s(%s, {rlim_cur=%s, rlim_max=%s})"
" = 0\n", STR_GETRLIMIT, xlat->str,
sprint_rlim(rlimit[0]), sprint_rlim(rlimit[1]));
}
puts("+++ exited with 0 +++");
return 0;
}
#endif /* NR_GETRLIMIT */