xref: /OK3568_Linux_fs/kernel/samples/bpf/tracex7_kern.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun #include <uapi/linux/ptrace.h>
2*4882a593Smuzhiyun #include <uapi/linux/bpf.h>
3*4882a593Smuzhiyun #include <linux/version.h>
4*4882a593Smuzhiyun #include <bpf/bpf_helpers.h>
5*4882a593Smuzhiyun 
6*4882a593Smuzhiyun SEC("kprobe/open_ctree")
bpf_prog1(struct pt_regs * ctx)7*4882a593Smuzhiyun int bpf_prog1(struct pt_regs *ctx)
8*4882a593Smuzhiyun {
9*4882a593Smuzhiyun 	unsigned long rc = -12;
10*4882a593Smuzhiyun 
11*4882a593Smuzhiyun 	bpf_override_return(ctx, rc);
12*4882a593Smuzhiyun 	return 0;
13*4882a593Smuzhiyun }
14*4882a593Smuzhiyun 
15*4882a593Smuzhiyun char _license[] SEC("license") = "GPL";
16*4882a593Smuzhiyun u32 _version SEC("version") = LINUX_VERSION_CODE;
17