From aad1a88c76f208d188fd061e3723bd637437e8d5 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Fri, 16 Mar 2001 22:47:14 +0000 Subject: Convert utility.c into libbb.a. It is now a whole pile of .c files. Clean up the resulting damage and fix up the makefile. -Erik --- libbb/kernel_version.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 libbb/kernel_version.c (limited to 'libbb/kernel_version.c') diff --git a/libbb/kernel_version.c b/libbb/kernel_version.c new file mode 100644 index 000000000..09cd582c4 --- /dev/null +++ b/libbb/kernel_version.c @@ -0,0 +1,66 @@ +/* vi: set sw=4 ts=4: */ +/* + * Utility routines. + * + * Copyright (C) tons of folks. Tracking down who wrote what + * isn't something I'm going to worry about... If you wrote something + * here, please feel free to acknowledge your work. + * + * 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 + * + * Based in part on code from sash, Copyright (c) 1999 by David I. Bell + * Permission has been granted to redistribute this code under the GPL. + * + */ + +#include +#include +#include +#include /* 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) { } + */ +extern int get_kernel_revision(void) +{ + struct utsname name; + char *s; + int i, r; + + if (uname(&name) == -1) { + 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: +*/ -- cgit v1.2.3