usage.c: remove reference to busybox.h

[oweals/busybox.git] / libbb / kernel_version.c

diff --git a/libbb/kernel_version.c b/libbb/kernel_version.c
index 5f5d36df245da371e77416e9c806d23eee2aca06..50b82ae1843dba6e0b17870a539fabf666c3d974 100644 (file)
--- a/libbb/kernel_version.c
+++ b/libbb/kernel_version.c
@@ -4,33 +4,19 @@
  *
  * 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
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#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,
+/* Returns current 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> }
+ *
+ *     if (get_linux_version_code() > KERNEL_VERSION(2,2,11)) { <stuff> }
  */
-int get_kernel_revision(void)
+int get_linux_version_code(void)
 {
        struct utsname name;
        char *s;
@@ -38,23 +24,14 @@ int get_kernel_revision(void)
 
        if (uname(&name) == -1) {
                bb_perror_msg("cannot get system information");
-               return (0);
+               return 0;
        }
 
        s = name.release;
        r = 0;
-       for (i=0 ; i<3 ; i++) {
+       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:
-*/