plars | fea599e | 2003-02-27 16:53:21 +0000 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) International Business Machines Corp., 2003 |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 13 | * the GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * |
| 22 | * AUTHOR |
| 23 | * Paul Larson <plars@linuxtestproject.org> |
| 24 | * |
| 25 | * DESCRIPTION |
| 26 | * Compare a given kernel version against the current kernel version. |
| 27 | * If they are the same - return 0 |
| 28 | * If the argument is > current kernel version - return positive int |
| 29 | * If the argument is < current kernel version - return negative int |
| 30 | * |
| 31 | */ |
| 32 | |
| 33 | |
| 34 | |
| 35 | #include <unistd.h> |
| 36 | #include <string.h> |
| 37 | #include <sys/utsname.h> |
| 38 | |
| 39 | void get_kver(int *k1, int *k2, int *k3) |
| 40 | { |
| 41 | struct utsname uval; |
| 42 | char *kver; |
| 43 | char *r1, *r2, *r3; |
| 44 | |
| 45 | uname(&uval); |
| 46 | kver = uval.release; |
| 47 | r1 = strsep(&kver, "."); |
| 48 | r2 = strsep(&kver, "."); |
| 49 | r3 = strsep(&kver, "."); |
| 50 | |
| 51 | *k1 = atoi(r1); |
| 52 | *k2 = atoi(r2); |
| 53 | *k3 = atoi(r3); |
| 54 | } |
| 55 | |
plars | 255c352 | 2003-03-03 21:40:43 +0000 | [diff] [blame^] | 56 | int tst_kvercmp(int r1, int r2, int r3) { |
plars | fea599e | 2003-02-27 16:53:21 +0000 | [diff] [blame] | 57 | int a1, a2, a3; |
| 58 | int testver, currver; |
| 59 | |
| 60 | get_kver(&a1, &a2, &a3); |
| 61 | testver = (r1 << 16) + (r2 << 8) + r3; |
| 62 | currver = (a1 << 16) + (a2 << 8) + a3; |
| 63 | |
| 64 | return testver - currver; |
| 65 | } |