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

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/test_build_id.c
Extension
.c
Size
774 bytes
Lines
32
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
/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */

#include "vmlinux.h"
#include <bpf/bpf_helpers.h>

struct bpf_stack_build_id stack_sleepable[128];
int res_sleepable;

struct bpf_stack_build_id stack_nofault[128];
int res_nofault;

SEC("uprobe.multi/./uprobe_multi:uprobe")
int uprobe_nofault(struct pt_regs *ctx)
{
	res_nofault = bpf_get_stack(ctx, stack_nofault, sizeof(stack_nofault),
				    BPF_F_USER_STACK | BPF_F_USER_BUILD_ID);

	return 0;
}

SEC("uprobe.multi.s/./uprobe_multi:uprobe")
int uprobe_sleepable(struct pt_regs *ctx)
{
	res_sleepable = bpf_get_stack(ctx, stack_sleepable, sizeof(stack_sleepable),
				      BPF_F_USER_STACK | BPF_F_USER_BUILD_ID);

	return 0;
}

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

Annotation

Implementation Notes