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

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/test_tp_btf_nullable.c
Extension
.c
Size
655 bytes
Lines
25
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

// SPDX-License-Identifier: GPL-2.0

#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#include "../test_kmods/bpf_testmod.h"
#include "bpf_misc.h"

SEC("tp_btf/bpf_testmod_test_nullable_bare_tp")
__failure __msg("R1 invalid mem access 'trusted_ptr_or_null_'")
int BPF_PROG(handle_tp_btf_nullable_bare1, struct bpf_testmod_test_read_ctx *nullable_ctx)
{
	return nullable_ctx->len;
}

SEC("tp_btf/bpf_testmod_test_nullable_bare_tp")
int BPF_PROG(handle_tp_btf_nullable_bare2, struct bpf_testmod_test_read_ctx *nullable_ctx)
{
	if (nullable_ctx)
		return nullable_ctx->len;
	return 0;
}

char _license[] SEC("license") = "GPL";

Annotation

Implementation Notes