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.

Dependency Surface

Detected Declarations

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

Implementation Notes