arch/x86/um/syscalls_32.c

File Facts

System

Linux kernel

Corpus path

arch/x86/um/syscalls_32.c

Extension

.c

Size

164 bytes

Lines

9

Domain

Architecture Layer

Bucket

arch/x86

Inferred role

Architecture Layer: syscall or user/kernel boundary

Status

core 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.
• Defines or participates in a user/kernel boundary; inspect argument validation, copy_from_user/copy_to_user, credentials, and dispatch target.

Dependency Surface

• linux/syscalls.h
• os.h

Detected Declarations

• syscall arch_prctl

Annotated Snippet

SYSCALL_DEFINE2(arch_prctl, int, option, unsigned long, arg2)
{
	return -EINVAL;
}

Annotation

• Immediate include surface: `linux/syscalls.h`, `os.h`.
• Detected declarations: `syscall arch_prctl`.
• Atlas domain: Architecture Layer / arch/x86.
• Implementation status: core 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.