tools/testing/selftests/bpf/progs/bpf_iter_test_kern5.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/progs/bpf_iter_test_kern5.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/bpf_iter_test_kern5.c
Extension
.c
Size
652 bytes
Lines
36
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

struct key_t {
	int a;
	int b;
	int c;
};

struct {
	__uint(type, BPF_MAP_TYPE_HASH);
	__uint(max_entries, 3);
	__type(key, struct key_t);
	__type(value, __u64);
} hashmap1 SEC(".maps");

__u32 key_sum = 0;

SEC("iter/bpf_map_elem")
int dump_bpf_hash_map(struct bpf_iter__bpf_map_elem *ctx)
{
	void *key = ctx->key;

	if (key == (void *)0)
		return 0;

	/* out of bound access w.r.t. hashmap1 */
	key_sum += *(__u32 *)(key + sizeof(struct key_t));
	return 0;
}

Annotation

Implementation Notes