/* 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 source tree. */ #include "libbb.h" /* After libbb.h, since it needs sys/types.h on some systems */ #include <sys/utsname.h> /* for uname(2) */ /* 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 FAST_FUNC get_linux_version_code(void) { struct utsname name; char *s, *t; int i, r; uname(&name); /* never fails */ s = name.release; r = 0; for (i = 0; i < 3; i++) { t = strtok(s, "."); r = r * 256 + (t ? atoi(t) : 0); s = NULL; } return r; }