tools/testing/selftests/bpf/progs/test_core_reloc_arrays.c
Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/progs/test_core_reloc_arrays.c
File Facts
- System
- Linux kernel
- Corpus path
tools/testing/selftests/bpf/progs/test_core_reloc_arrays.c- Extension
.c- Size
- 1245 bytes
- Lines
- 64
- 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.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/bpf.hstdint.hbpf/bpf_helpers.hbpf/bpf_core_read.h
Detected Declarations
struct core_reloc_arrays_outputstruct core_reloc_arrays_substructstruct core_reloc_arraysfunction test_core_arrays
Annotated Snippet
struct core_reloc_arrays_output {
int a2;
int a3;
char b123;
int c1c;
int d00d;
int f01c;
};
struct core_reloc_arrays_substruct {
int c;
int d;
};
struct core_reloc_arrays {
int a[5];
char b[2][3][4];
struct core_reloc_arrays_substruct c[3];
struct core_reloc_arrays_substruct d[1][2];
struct core_reloc_arrays_substruct f[][2];
};
#define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
SEC("raw_tracepoint/sys_enter")
int test_core_arrays(void *ctx)
{
struct core_reloc_arrays *in = (void *)&data.in;
struct core_reloc_arrays_output *out = (void *)&data.out;
int *a;
if (CORE_READ(&out->a2, &in->a[2]))
return 1;
if (CORE_READ(&out->b123, &in->b[1][2][3]))
return 1;
if (CORE_READ(&out->c1c, &in->c[1].c))
return 1;
if (CORE_READ(&out->d00d, &in->d[0][0].d))
return 1;
if (CORE_READ(&out->f01c, &in->f[0][1].c))
return 1;
a = __builtin_preserve_access_index(({ in->a; }));
out->a3 = a[0] + a[1] + a[2] + a[3];
return 0;
}
Annotation
- Immediate include surface: `linux/bpf.h`, `stdint.h`, `bpf/bpf_helpers.h`, `bpf/bpf_core_read.h`.
- Detected declarations: `struct core_reloc_arrays_output`, `struct core_reloc_arrays_substruct`, `struct core_reloc_arrays`, `function test_core_arrays`.
- 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.