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/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* 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
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/utsname.h> /* for uname(2) */
#include "libbb.h"
/* Returns kernel version encoded as major*65536 + minor*256 + patch,
* so, for example, to check if the kernel is greater than 2.2.11:
* if (get_kernel_revision() <= 2*65536+2*256+11) { <stuff> }
*/
extern int get_kernel_revision(void)
{
struct utsname name;
char *s;
int i, r;
if (uname(&name) == -1) {
bb_perror_msg("cannot get system information");
return (0);
}
s = name.release;
r = 0;
for (i=0 ; i<3 ; i++) {
r = r * 256 + atoi(strtok(s, "."));
s = NULL;
}
return r;
}
/* END CODE */
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
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