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8a46bf41e5
Rewriting the cpuset macros test to cover more use cases and port the tests to the new test infrastructure. The use cases include bad actor access attempts, before and after the CPU set structure. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@redhat.com>
123 lines
3.9 KiB
C
123 lines
3.9 KiB
C
/* Test that CPU_* macros comply with their specifications.
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Copyright (C) 2024 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 <limits.h>
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#include <sched.h>
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#include <stdio.h>
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#include <support/check.h>
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#include <support/test-driver.h>
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static int
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do_test (void)
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{
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cpu_set_t *cpusetp_A = NULL;
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cpu_set_t *cpusetp_B = NULL;
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cpu_set_t *cpusetp_C = NULL;
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size_t setsz __attribute__ ((unused)) = GET_SIZE();
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TEST_VERIFY (CPU_ALLOC_SIZE (-1) == 0);
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TEST_VERIFY (CPU_ALLOC_SIZE (0) == 0);
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TEST_VERIFY (CPU_ALLOC_SIZE (1) == sizeof (__cpu_mask));
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TEST_VERIFY (CPU_ALLOC_SIZE (INT_MAX) > 0);
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PREPARE_CPU_SET_TO_FAULT_BEFORE(cpusetp_A);
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PREPARE_CPU_SET_TO_FAULT(cpusetp_B);
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PREPARE_CPU_SET(cpusetp_C);
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/* Bad actor access, negative CPU number */
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LOCAL_CPU_SET (-1, setsz, cpusetp_A);
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TEST_VERIFY (!LOCAL_CPU_ISSET (-1, setsz, cpusetp_A));
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/* Bad actor access, above CPU number */
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LOCAL_CPU_SET (LOCAL_NUM_CPUS, setsz, cpusetp_B);
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TEST_VERIFY (!LOCAL_CPU_ISSET (LOCAL_NUM_CPUS, setsz, cpusetp_B));
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LOCAL_CPU_ZERO (setsz, cpusetp_A);
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LOCAL_CPU_ZERO (setsz, cpusetp_B);
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LOCAL_CPU_ZERO (setsz, cpusetp_C);
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for (int cpu = 0; cpu < LOCAL_NUM_CPUS; cpu += 2)
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{
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/* Set A = 0x55..55 */
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LOCAL_CPU_SET (cpu, setsz, cpusetp_A);
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TEST_VERIFY (LOCAL_CPU_ISSET (cpu, setsz, cpusetp_A));
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}
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for (int cpu = 1; cpu < LOCAL_NUM_CPUS; cpu += 2)
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{
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/* Set B = 0xAA..AA */
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LOCAL_CPU_SET (cpu, setsz, cpusetp_B);
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TEST_VERIFY (LOCAL_CPU_ISSET (cpu, setsz, cpusetp_B));
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}
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/* Ensure CPU_COUNT matches expected count */
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TEST_VERIFY (LOCAL_CPU_COUNT (setsz, cpusetp_A) == LOCAL_CPU_COUNT (setsz, cpusetp_B));
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TEST_VERIFY (LOCAL_CPU_COUNT (setsz, cpusetp_A) == LOCAL_NUM_CPUS / 2);
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LOCAL_CPU_AND (setsz, cpusetp_C, cpusetp_A, cpusetp_B);
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for (int cpu = 0; cpu < LOCAL_NUM_CPUS; cpu++)
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{
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/* A setsz, B == 0 */
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TEST_VERIFY (!LOCAL_CPU_ISSET (cpu, setsz, cpusetp_C));
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}
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LOCAL_CPU_OR (setsz, cpusetp_C, cpusetp_A, cpusetp_B);
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for (int cpu = 0; cpu < LOCAL_NUM_CPUS; cpu++)
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{
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/* A | B == 0xFF..FF */
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TEST_VERIFY (LOCAL_CPU_ISSET (cpu, setsz, cpusetp_C));
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}
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/* Check that CPU_ZERO actually does something */
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TEST_VERIFY (LOCAL_CPU_COUNT (setsz, cpusetp_C) == LOCAL_NUM_CPUS);
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LOCAL_CPU_ZERO (setsz, cpusetp_C);
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TEST_VERIFY (LOCAL_CPU_COUNT (setsz, cpusetp_C) == 0);
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LOCAL_CPU_XOR (setsz, cpusetp_C, cpusetp_A, cpusetp_A);
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for (int cpu = 0; cpu < LOCAL_NUM_CPUS; cpu++)
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{
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/* A ^ A == 0 */
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TEST_VERIFY (!LOCAL_CPU_ISSET (cpu, setsz, cpusetp_C));
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}
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LOCAL_CPU_XOR (setsz, cpusetp_C, cpusetp_A, cpusetp_B);
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for (int cpu = 0; cpu < LOCAL_NUM_CPUS; cpu++)
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{
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/* C = A ^ B == 0xFF..FF */
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TEST_VERIFY (LOCAL_CPU_ISSET (cpu, setsz, cpusetp_C));
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}
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for (int cpu = 1; cpu < LOCAL_NUM_CPUS; cpu += 2)
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{
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/* C = 0x55..55 */
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LOCAL_CPU_CLR (cpu, setsz, cpusetp_C);
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TEST_VERIFY (!LOCAL_CPU_ISSET (cpu, setsz, cpusetp_C));
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}
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TEST_VERIFY (LOCAL_CPU_EQUAL (setsz, cpusetp_A, cpusetp_C));
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CLEAN_CPU_SET(cpusetp_C);
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CLEAN_CPU_SET_TO_FAULT(cpusetp_B);
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CLEAN_CPU_SET_TO_FAULT_BEFORE(cpusetp_A);
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return 0;
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}
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#include <support/test-driver.c>
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