include/linux/buildid.h

File Facts

System

Linux kernel

Corpus path

include/linux/buildid.h

Extension

.h

Size

1313 bytes

Lines

50

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h

Detected Declarations

• struct vm_area_struct
• struct file
• struct freader
• function init_vmlinux_build_id

Annotated Snippet

struct freader {
	void *buf;
	u32 buf_sz;
	int err;
	union {
		struct {
			struct file *file;
			struct folio *folio;
			void *addr;
			loff_t folio_off;
			bool may_fault;
		};
		struct {
			const char *data;
			u64 data_sz;
		};
	};
};

void freader_init_from_file(struct freader *r, void *buf, u32 buf_sz,
			    struct file *file, bool may_fault);
void freader_init_from_mem(struct freader *r, const char *data, u64 data_sz);
const void *freader_fetch(struct freader *r, loff_t file_off, size_t sz);
void freader_cleanup(struct freader *r);

#endif

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct vm_area_struct`, `struct file`, `struct freader`, `function init_vmlinux_build_id`.
• Atlas domain: Core OS / Core Kernel Interface.
• 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.