Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
---
samples/livepatch/livepatch-sample.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/samples/livepatch/livepatch-sample.c b/samples/livepatch/livepatch-sample.c
index e34f871..478d102 100644
--- a/samples/livepatch/livepatch-sample.c
+++ b/samples/livepatch/livepatch-sample.c
@@ -32,7 +32,7 @@
*
* $ insmod livepatch-sample.ko
* $ cat /proc/cmdline
- * this has been live patched
+ * <your cmdline> livepatch=1
*
* $ echo 0 > /sys/kernel/livepatch/livepatch_sample/enabled
* $ cat /proc/cmdline
@@ -42,11 +42,18 @@
#include <linux/seq_file.h>
static int livepatch_cmdline_proc_show(struct seq_file *m, void *v)
{
- seq_printf(m, "%s\n", "this has been live patched");
+ seq_printf(m, "%s livepatch=1\n", saved_command_line);
return 0;
}
-static struct klp_func funcs[] = {
+struct KLP_MODULE_RELOC(vmlinux) vmlinux_relocs[] = {
+ {
+ .sym = &saved_command_line,
+ .sympos = 0,
+ },
+};
+
+static struct klp_func vmlinux_funcs[] = {
{
.old_name = "cmdline_proc_show",
.new_func = livepatch_cmdline_proc_show,
@@ -56,7 +63,7 @@ static struct klp_func funcs[] = {
static struct klp_object objs[] = {
{
/* name being NULL means vmlinux */
- .funcs = funcs,
+ .funcs = vmlinux_funcs,
}, { }
};
--
2.7.4
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