diff options
Diffstat (limited to 'ltp_framework/lib/tst_kvercmp.c')
| -rw-r--r-- | ltp_framework/lib/tst_kvercmp.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/ltp_framework/lib/tst_kvercmp.c b/ltp_framework/lib/tst_kvercmp.c new file mode 100644 index 0000000..f132164 --- /dev/null +++ b/ltp_framework/lib/tst_kvercmp.c @@ -0,0 +1,68 @@ +/* + * + * Copyright (c) International Business Machines Corp., 2003 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* + * + * AUTHOR + * Paul Larson <plars@linuxtestproject.org> + * + * DESCRIPTION + * Compare a given kernel version against the current kernel version. + * If they are the same - return 0 + * If the argument is > current kernel version - return positive int + * If the argument is < current kernel version - return negative int + * + */ + + +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <sys/utsname.h> + +void get_kver(int *k1, int *k2, int *k3) +{ + struct utsname uval; + char *kver; + char *r1, *r2, *r3; +#if !defined(linux) + extern char *strsep(); /* shut up some compilers */ +#endif + + uname(&uval); + kver = uval.release; + r1 = strsep(&kver, "."); + r2 = strsep(&kver, "."); + r3 = strsep(&kver, "."); + + *k1 = atoi(r1); + *k2 = atoi(r2); + *k3 = atoi(r3); +} + +int tst_kvercmp(int r1, int r2, int r3) { + int a1, a2, a3; + int testver, currver; + + get_kver(&a1, &a2, &a3); + testver = (r1 << 16) + (r2 << 8) + r3; + currver = (a1 << 16) + (a2 << 8) + a3; + + return currver - testver; +}
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