bpf/progs/freplace_get_constant.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include <linux/bpf.h>
0003 #include <bpf/bpf_helpers.h>
0004 #include <bpf/bpf_endian.h>
0005
0006 volatile __u64 test_get_constant = 0;
0007 SEC("freplace/get_constant")
0008 int security_new_get_constant(long val)
0009 {
0010     if (val != 123)
0011         return 0;
0012     test_get_constant = 1;
0013     return test_get_constant; /* original get_constant() returns val - 122 */
0014 }
0015 char _license[] SEC("license") = "GPL";