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/*
* Check decoding of getrlimit/ugetrlimit syscall.
*
* Copyright (c) 2016-2018 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2016-2024 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <sys/resource.h>
#include <unistd.h>
#include "xlat.h"
#include "xlat/resources.h"
static const char *
sprint_rlim(kernel_ulong_t lim)
{
static char buf[2][ /* space for 2 llu strings */
2*sizeof(lim)*3 +
/* space for XLAT_STYLE_ABBREV decoding */
sizeof("*1024") + sizeof("RLIM64_INFINITY") +
/* space for C style comments */
6];
static unsigned int i;
i &= 1;
#if XLAT_RAW
sprintf(buf[i], "%llu", (unsigned long long) lim);
return buf[i++];
#else
if (sizeof(lim) == sizeof(uint64_t)) {
if (lim == (kernel_ulong_t) -1ULL) {
# if XLAT_VERBOSE
sprintf(buf[i], "%llu /* RLIM64_INFINITY */",
(unsigned long long) lim);
return buf[i++];
# else /* XLAT_ABBREV */
return "RLIM64_INFINITY";
# endif
}
} else {
if (lim == (kernel_ulong_t) -1U) {
# if XLAT_VERBOSE
sprintf(buf[i], "%llu /* RLIM_INFINITY */",
(unsigned long long) lim);
return buf[i++];
# else /* XLAT_ABBREV */
return "RLIM_INFINITY";
# endif
}
}
if (lim > 1024 && lim % 1024 == 0)
# if XLAT_VERBOSE
sprintf(buf[i], "%llu /* %llu*1024 */",
(unsigned long long) lim,
(unsigned long long) lim / 1024);
# else /* XLAT_ABBREV */
sprintf(buf[i], "%llu*1024", (unsigned long long) lim / 1024);
# endif
else
sprintf(buf[i], "%llu", (unsigned long long) lim);
return buf[i++];
#endif /* !XLAT_RAW */
}
#ifdef NR_GETRLIMIT
int
main(void)
{
TAIL_ALLOC_OBJECT_CONST_ARR(kernel_ulong_t, rlimit, 2);
const struct xlat_data *xlat;
size_t i;
long rc;
rc = syscall(NR_GETRLIMIT, 16, 0);
printf("%s(0x10 /* RLIMIT_??? */, NULL) = %s\n",
STR_GETRLIMIT, sprintrc(rc));
for (xlat = resources->data, i = 0; i < resources->size; ++xlat, ++i) {
if (!xlat->str)
continue;
unsigned long res = 0xfacefeed00000000ULL | xlat->val;
rc = syscall(NR_GETRLIMIT, res, 0);
if (rc && ENOSYS == errno)
perror_msg_and_skip(STR_GETRLIMIT);
printf("%s(%s, NULL) = %s\n",
STR_GETRLIMIT, xlat->str, sprintrc(rc));
rc = syscall(NR_GETRLIMIT, res, rlimit);
if (rc)
printf("%s(%s, %p) = %s\n",
STR_GETRLIMIT, xlat->str, rlimit, sprintrc(rc));
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 */
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