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authorGravatar Eric Andersen <andersen@codepoet.org>2001-03-16 22:47:14 +0000
committerGravatar Eric Andersen <andersen@codepoet.org>2001-03-16 22:47:14 +0000
commitaad1a88c76f208d188fd061e3723bd637437e8d5 (patch)
tree75ac2b994f7f04af776e93eeedba82b873ff557e /libbb/kernel_version.c
parentdfba13d199bb58d802df99c1ef20fdc0d628e86d (diff)
downloadbusybox-aad1a88c76f208d188fd061e3723bd637437e8d5.tar.gz
busybox-aad1a88c76f208d188fd061e3723bd637437e8d5.tar.bz2
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
Diffstat (limited to 'libbb/kernel_version.c')
-rw-r--r--libbb/kernel_version.c66
1 files changed, 66 insertions, 0 deletions
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 <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,
+ * so, for example, to check if the kernel is greater than 2.2.11:
+ * if (get_kernel_revision() <= 2*65536+2*256+11) { <stuff> }
+ */
+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:
+*/