Contents of /tags/mkinitrd-6_1_5/busybox/libbb/kernel_version.c
Parent Directory | Revision Log
Revision 899 -
(show annotations)
(download)
Wed Aug 5 17:52:52 2009 UTC (15 years, 1 month ago) by niro
File MIME type: text/plain
File size: 803 byte(s)
Wed Aug 5 17:52:52 2009 UTC (15 years, 1 month ago) by niro
File MIME type: text/plain
File size: 803 byte(s)
tagged 'mkinitrd-6_1_5'
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Utility routines. |
4 | * |
5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
8 | */ |
9 | |
10 | #include <sys/utsname.h> /* for uname(2) */ |
11 | |
12 | #include "libbb.h" |
13 | |
14 | /* Returns current kernel version encoded as major*65536 + minor*256 + patch, |
15 | * so, for example, to check if the kernel is greater than 2.2.11: |
16 | * |
17 | * if (get_linux_version_code() > KERNEL_VERSION(2,2,11)) { <stuff> } |
18 | */ |
19 | int FAST_FUNC get_linux_version_code(void) |
20 | { |
21 | struct utsname name; |
22 | char *s; |
23 | int i, r; |
24 | |
25 | if (uname(&name) == -1) { |
26 | bb_perror_msg("cannot get system information"); |
27 | return 0; |
28 | } |
29 | |
30 | s = name.release; |
31 | r = 0; |
32 | for (i = 0; i < 3; i++) { |
33 | r = r * 256 + atoi(strtok(s, ".")); |
34 | s = NULL; |
35 | } |
36 | return r; |
37 | } |