1 /* 2 * Copyright (c) 2017 Cyril Hrubis <chrubis (at) suse.cz> 3 * 4 * This program is free software: you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation, either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #include <sys/utsname.h> 19 #include "test.h" 20 #include "tst_kernel.h" 21 22 int tst_kernel_bits(void) 23 { 24 struct utsname buf; 25 int kernel_bits; 26 27 if (uname(&buf)) { 28 tst_brkm(TBROK | TERRNO, NULL, "uname()"); 29 return -1; 30 } 31 32 kernel_bits = strstr(buf.machine, "64") ? 64 : 32; 33 34 /* 35 * ARM64 (aarch64) defines 32-bit compatibility modes as 36 * armv8l and armv8b (little and big endian). 37 * s390x is 64bit but not contain 64 in the words. 38 */ 39 if (!strcmp(buf.machine, "armv8l") || !strcmp(buf.machine, "armv8b") 40 || !strcmp(buf.machine, "s390x")) 41 kernel_bits = 64; 42 43 tst_resm(TINFO, "uname.machine=%s kernel is %ibit", 44 buf.machine, kernel_bits); 45 46 return kernel_bits; 47 } 48
