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174 lines
5.7 KiB
C
174 lines
5.7 KiB
C
/* Copyright (C) 2018-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <stdio.h>
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#include <sys/resource.h>
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#include <support/check.h>
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static int resources[] = {
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/* The following 7 limits are part of POSIX and must exist. */
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RLIMIT_CORE,
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RLIMIT_CPU,
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RLIMIT_DATA,
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RLIMIT_FSIZE,
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RLIMIT_NOFILE,
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RLIMIT_STACK,
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RLIMIT_AS
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};
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#define nresources (sizeof (resources) / sizeof (resources[0]))
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/* Assume that the prlimit64 function calls the prlimit64 syscall without
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mangling the arguments. */
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#define PRLIMIT64_INFINITY ((rlim64_t) -1)
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/* As we don't know which limit will be modified, use a sufficiently high
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value to not shoot ourself in the foot. Use a 32-bit value to test
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both the 32- and 64-bit versions, and keep the highest bit clear to
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avoid sign extension. */
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#define PRLIMIT64_TESTVAL ((rlim64_t) 0x42420000)
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static void
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test_getrlimit (int resource, rlim_t exp_cur, rlim_t exp_max)
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{
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struct rlimit r;
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TEST_VERIFY_EXIT (getrlimit (resource, &r) == 0);
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TEST_COMPARE (r.rlim_cur, exp_cur);
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TEST_COMPARE (r.rlim_max, exp_max);
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}
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static void
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test_getrlimit64 (int resource, rlim64_t exp_cur, rlim64_t exp_max)
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{
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struct rlimit64 r;
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TEST_VERIFY_EXIT (getrlimit64 (resource, &r) == 0);
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TEST_COMPARE (r.rlim_cur, exp_cur);
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TEST_COMPARE (r.rlim_max, exp_max);
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}
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static void
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test_prlimit_get (int resource, rlim_t exp_cur, rlim_t exp_max)
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{
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struct rlimit r;
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TEST_VERIFY_EXIT (prlimit (0, resource, NULL, &r) == 0);
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TEST_COMPARE (r.rlim_cur, exp_cur);
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TEST_COMPARE (r.rlim_max, exp_max);
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}
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static void
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test_prlimit64_get (int resource, rlim64_t exp_cur, rlim64_t exp_max)
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{
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struct rlimit64 r;
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TEST_COMPARE (prlimit64 (0, resource, NULL, &r), 0);
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TEST_COMPARE (r.rlim_cur, exp_cur);
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TEST_COMPARE (r.rlim_max, exp_max);
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}
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static void
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test_setrlimit (int resource, rlim_t new_cur, rlim_t new_max)
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{
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struct rlimit r = { new_cur, new_max };
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TEST_COMPARE (setrlimit (resource, &r), 0);
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}
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static void
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test_setrlimit64 (int resource, rlim64_t new_cur, rlim64_t new_max)
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{
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struct rlimit64 r = { new_cur, new_max };
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TEST_COMPARE (setrlimit64 (resource, &r), 0);
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}
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static void
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test_prlimit_set (int resource, rlim_t new_cur, rlim_t new_max)
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{
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struct rlimit r = { new_cur, new_max };
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TEST_COMPARE (prlimit (0, resource, &r, NULL), 0);
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}
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static void
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test_prlimit64_set (int resource, rlim64_t new_cur, rlim64_t new_max)
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{
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struct rlimit64 r = { new_cur, new_max };
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TEST_COMPARE (prlimit64 (0, resource, &r, NULL), 0);
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}
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static int
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do_test (void)
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{
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int resource = -1;
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/* Find a resource with hard limit set to infinity, so that the soft limit
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can be manipulated to any value. */
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for (int i = 0; i < nresources; ++i)
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{
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struct rlimit64 r64;
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int res = prlimit64 (0, resources[i], NULL, &r64);
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if ((res == 0) && (r64.rlim_max == PRLIMIT64_INFINITY))
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{
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resource = resources[i];
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break;
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}
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}
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if (resource == -1)
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FAIL_UNSUPPORTED
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("Could not find and limit with hard limit set to infinity.");
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/* First check that the get functions work correctly with the test value. */
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test_prlimit64_set (resource, PRLIMIT64_TESTVAL, PRLIMIT64_INFINITY);
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test_getrlimit (resource, PRLIMIT64_TESTVAL, RLIM_INFINITY);
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test_getrlimit64 (resource, PRLIMIT64_TESTVAL, RLIM64_INFINITY);
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test_prlimit_get (resource, PRLIMIT64_TESTVAL, RLIM_INFINITY);
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test_prlimit64_get (resource, PRLIMIT64_TESTVAL, RLIM64_INFINITY);
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/* Then check that the get functions work correctly with infinity. */
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test_prlimit64_set (resource, PRLIMIT64_INFINITY, PRLIMIT64_INFINITY);
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test_getrlimit (resource, RLIM_INFINITY, RLIM_INFINITY);
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test_getrlimit64 (resource, RLIM64_INFINITY, RLIM64_INFINITY);
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test_prlimit_get (resource, RLIM_INFINITY, RLIM_INFINITY);
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test_prlimit64_get (resource, RLIM64_INFINITY, RLIM64_INFINITY);
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/* Then check that setrlimit works correctly with the test value. */
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test_setrlimit (resource, PRLIMIT64_TESTVAL, RLIM_INFINITY);
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test_prlimit64_get (resource, PRLIMIT64_TESTVAL, PRLIMIT64_INFINITY);
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/* Then check that setrlimit works correctly with infinity. */
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test_setrlimit (resource, RLIM_INFINITY, RLIM_INFINITY);
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test_prlimit64_get (resource, PRLIMIT64_INFINITY, PRLIMIT64_INFINITY);
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/* Then check that setrlimit64 works correctly with the test value. */
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test_setrlimit64 (resource, PRLIMIT64_TESTVAL, RLIM64_INFINITY);
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test_prlimit64_get (resource, PRLIMIT64_TESTVAL, PRLIMIT64_INFINITY);
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/* Then check that setrlimit64 works correctly with infinity. */
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test_setrlimit64 (resource, RLIM64_INFINITY, RLIM64_INFINITY);
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test_prlimit64_get (resource, PRLIMIT64_INFINITY, PRLIMIT64_INFINITY);
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/* Then check that prlimit works correctly with the test value. */
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test_prlimit_set (resource, RLIM_INFINITY, RLIM_INFINITY);
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test_prlimit64_get (resource, PRLIMIT64_INFINITY, PRLIMIT64_INFINITY);
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/* Finally check that prlimit works correctly with infinity. */
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test_prlimit_set (resource, PRLIMIT64_TESTVAL, RLIM_INFINITY);
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test_prlimit64_get (resource, PRLIMIT64_TESTVAL, PRLIMIT64_INFINITY);
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return 0;
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}
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#include <support/test-driver.c>
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