arch/x86/entry/vdso/vdso64/vgetrandom.c

File Facts

System

Linux kernel

Corpus path

arch/x86/entry/vdso/vdso64/vgetrandom.c

Extension

.c

Size

496 bytes

Lines

16

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

• linux/types.h
• lib/vdso/getrandom.c

Detected Declarations

• function Copyright

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2022-2024 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 */
#include <linux/types.h>

#include "lib/vdso/getrandom.c"

ssize_t __vdso_getrandom(void *buffer, size_t len, unsigned int flags, void *opaque_state, size_t opaque_len)
{
	return __cvdso_getrandom(buffer, len, flags, opaque_state, opaque_len);
}

ssize_t getrandom(void *, size_t, unsigned int, void *, size_t)
	__attribute__((weak, alias("__vdso_getrandom")));

Annotation

• Immediate include surface: `linux/types.h`, `lib/vdso/getrandom.c`.
• Detected declarations: `function Copyright`.
• Atlas domain: Architecture Layer / arch/x86.
• 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.