From: Eder Ruiz Maria <eder.ruiz@xxxxxxxxxxxxx>
---
emulator/btdev.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/emulator/btdev.c b/emulator/btdev.c
index 52b58ce..30022d1 100644
--- a/emulator/btdev.c
+++ b/emulator/btdev.c
@@ -115,6 +115,23 @@ struct btdev {
static struct btdev *btdev_list[MAX_BTDEV_ENTRIES] = { };
+static int get_hook_index(struct btdev *btdev, enum btdev_hook_type type,
+ uint16_t opcode)
+{
+ int i;
+
+ for (i = 0; i < MAX_HOOK_ENTRIES; i++) {
+ if (btdev->hook_list[i] == NULL)
+ continue;
+
+ if (btdev->hook_list[i]->type == type &&
+ btdev->hook_list[i]->opcode == opcode)
+ return i;
+ }
+
+ return -1;
+}
+
static inline int add_btdev(struct btdev *btdev)
{
int i, index = -1;
@@ -1710,6 +1727,9 @@ int btdev_add_hook(struct btdev *btdev, enum btdev_hook_type type,
if (!btdev)
return -1;
+ if (get_hook_index(btdev, type, opcode) > 0)
+ return -1;
+
for (i = 0; i < MAX_HOOK_ENTRIES; i++) {
if (btdev->hook_list[i] == NULL) {
btdev->hook_list[i] = malloc(sizeof(struct hook));
--
1.7.9.5
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