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67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) tons of folks. Tracking down who wrote what
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* isn't something I'm going to worry about... If you wrote something
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* here, please feel free to acknowledge your work.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
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* Permission has been granted to redistribute this code under the GPL.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/utsname.h> /* for uname(2) */
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#include "libbb.h"
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/* Returns kernel version encoded as major*65536 + minor*256 + patch,
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* so, for example, to check if the kernel is greater than 2.2.11:
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* if (get_kernel_revision() <= 2*65536+2*256+11) { <stuff> }
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*/
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extern int get_kernel_revision(void)
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{
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struct utsname name;
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char *s;
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int i, r;
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if (uname(&name) == -1) {
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perror_msg("cannot get system information");
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return (0);
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}
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s = name.release;
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r = 0;
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for (i=0 ; i<3 ; i++) {
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r = r * 256 + atoi(strtok(s, "."));
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s = NULL;
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}
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return r;
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}
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/* END CODE */
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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