/* vi: set sw=4 ts=4: */ /* * Utility routines. * * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> * * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ #include <sys/utsname.h> /* for uname(2) */ #include "libbb.h" /* 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_linux_version_code() > KERNEL_VERSION(2,2,11)) { <stuff> } */ int get_linux_version_code(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; }