tools/testing/selftests/bpf/progs/freplace_get_constant.c
Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/progs/freplace_get_constant.c
File Facts
- System
- Linux kernel
- Corpus path
tools/testing/selftests/bpf/progs/freplace_get_constant.c- Extension
.c- Size
- 396 bytes
- Lines
- 16
- 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.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Dependency Surface
linux/bpf.hbpf/bpf_helpers.hbpf/bpf_endian.h
Detected Declarations
function security_new_get_constant
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_endian.h>
volatile __u64 test_get_constant = 0;
SEC("freplace/get_constant")
int security_new_get_constant(long val)
{
if (val != 123)
return 0;
test_get_constant = 1;
return test_get_constant; /* original get_constant() returns val - 122 */
}
char _license[] SEC("license") = "GPL";
Annotation
- Immediate include surface: `linux/bpf.h`, `bpf/bpf_helpers.h`, `bpf/bpf_endian.h`.
- Detected declarations: `function security_new_get_constant`.
- Atlas domain: Support Tooling And Documentation / tools.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.