arch/x86/um/ptrace_user.c

File Facts

System

Linux kernel

Corpus path

arch/x86/um/ptrace_user.c

Extension

.c

Size

419 bytes

Lines

22

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

• errno.h
• ptrace_user.h

Detected Declarations

• function Copyright
• function ptrace_setregs

Annotated Snippet

#include <errno.h>
#include <ptrace_user.h>

int ptrace_getregs(long pid, unsigned long *regs_out)
{
	if (ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0)
		return -errno;
	return 0;
}

int ptrace_setregs(long pid, unsigned long *regs)
{
	if (ptrace(PTRACE_SETREGS, pid, 0, regs) < 0)
		return -errno;
	return 0;
}

Annotation

• Immediate include surface: `errno.h`, `ptrace_user.h`.
• Detected declarations: `function Copyright`, `function ptrace_setregs`.
• 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.