1f08c3bdfSopenharmony_ci// SPDX-License-Identifier: GPL-2.0 2f08c3bdfSopenharmony_ci/* 3f08c3bdfSopenharmony_ci * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved. 4f08c3bdfSopenharmony_ci * AUTHOR: Nirmala Devi Dhanasekar <nirmala.devi@wipro.com> 5f08c3bdfSopenharmony_ci */ 6f08c3bdfSopenharmony_ci 7f08c3bdfSopenharmony_ci/*\ 8f08c3bdfSopenharmony_ci * [Description] 9f08c3bdfSopenharmony_ci * 10f08c3bdfSopenharmony_ci * Test for ENOMEM error. 11f08c3bdfSopenharmony_ci * 12f08c3bdfSopenharmony_ci * munlock(2) fails with ENOMEM if some of the specified address range 13f08c3bdfSopenharmony_ci * does not correspond to mapped pages in the address space of the 14f08c3bdfSopenharmony_ci * process. 15f08c3bdfSopenharmony_ci */ 16f08c3bdfSopenharmony_ci 17f08c3bdfSopenharmony_ci#include <sys/mman.h> 18f08c3bdfSopenharmony_ci#include "tst_test.h" 19f08c3bdfSopenharmony_ci 20f08c3bdfSopenharmony_cistatic size_t len, pg_size; 21f08c3bdfSopenharmony_cistatic void *addr; 22f08c3bdfSopenharmony_ci 23f08c3bdfSopenharmony_cistatic void run(void) 24f08c3bdfSopenharmony_ci{ 25f08c3bdfSopenharmony_ci TST_EXP_FAIL(munlock(addr, len), ENOMEM, "munlock(%p, %lu)", 26f08c3bdfSopenharmony_ci addr, len); 27f08c3bdfSopenharmony_ci} 28f08c3bdfSopenharmony_ci 29f08c3bdfSopenharmony_cistatic void setup(void) 30f08c3bdfSopenharmony_ci{ 31f08c3bdfSopenharmony_ci pg_size = getpagesize(); 32f08c3bdfSopenharmony_ci len = 8 * pg_size; 33f08c3bdfSopenharmony_ci addr = SAFE_MMAP(NULL, len, PROT_READ | PROT_WRITE, 34f08c3bdfSopenharmony_ci MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); 35f08c3bdfSopenharmony_ci memset(addr, 0x20, len); 36f08c3bdfSopenharmony_ci SAFE_MLOCK(addr, len); 37f08c3bdfSopenharmony_ci /* 38f08c3bdfSopenharmony_ci * unmap part of the area, to create the condition for ENOMEM 39f08c3bdfSopenharmony_ci */ 40f08c3bdfSopenharmony_ci addr += 2 * pg_size; 41f08c3bdfSopenharmony_ci SAFE_MUNMAP(addr, 4 * pg_size); 42f08c3bdfSopenharmony_ci} 43f08c3bdfSopenharmony_ci 44f08c3bdfSopenharmony_cistatic struct tst_test test = { 45f08c3bdfSopenharmony_ci .needs_root = 1, 46f08c3bdfSopenharmony_ci .setup = setup, 47f08c3bdfSopenharmony_ci .test_all = run, 48f08c3bdfSopenharmony_ci}; 49