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-rw-r--r--security/bpf/hooks.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/security/bpf/hooks.c b/security/bpf/hooks.c
new file mode 100644
index 0000000000..cfaf1d0e6a
--- /dev/null
+++ b/security/bpf/hooks.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright (C) 2020 Google LLC.
+ */
+#include <linux/lsm_hooks.h>
+#include <linux/bpf_lsm.h>
+
+static struct security_hook_list bpf_lsm_hooks[] __ro_after_init = {
+ #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
+ LSM_HOOK_INIT(NAME, bpf_lsm_##NAME),
+ #include <linux/lsm_hook_defs.h>
+ #undef LSM_HOOK
+ LSM_HOOK_INIT(inode_free_security, bpf_inode_storage_free),
+ LSM_HOOK_INIT(task_free, bpf_task_storage_free),
+};
+
+static int __init bpf_lsm_init(void)
+{
+ security_add_hooks(bpf_lsm_hooks, ARRAY_SIZE(bpf_lsm_hooks), "bpf");
+ pr_info("LSM support for eBPF active\n");
+ return 0;
+}
+
+struct lsm_blob_sizes bpf_lsm_blob_sizes __ro_after_init = {
+ .lbs_inode = sizeof(struct bpf_storage_blob),
+ .lbs_task = sizeof(struct bpf_storage_blob),
+};
+
+DEFINE_LSM(bpf) = {
+ .name = "bpf",
+ .init = bpf_lsm_init,
+ .blobs = &bpf_lsm_blob_sizes
+};