rust/helpers/uaccess.c
Source file repositories/reference/linux-study-clean/rust/helpers/uaccess.c
File Facts
- System
- Linux kernel
- Corpus path
rust/helpers/uaccess.c- Extension
.c- Size
- 701 bytes
- Lines
- 30
- Domain
- Rust Kernel Layer
- Bucket
- Rust API Membrane
- Inferred role
- Rust Kernel Layer: implementation source
- Status
- source implementation candidate
Why This File Exists
Rust-side wrappers and abstractions around kernel C APIs, ownership contracts, allocation, synchronization, and module integration.
- Rust-side wrappers and abstractions around kernel C APIs, ownership contracts, allocation, synchronization, and module integration.
- Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
Dependency Surface
linux/uaccess.h
Detected Declarations
function rust_helper_copy_from_userfunction rust_helper_copy_to_userfunction rust_helper__copy_from_userfunction rust_helper__copy_to_user
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0
#include <linux/uaccess.h>
__rust_helper unsigned long
rust_helper_copy_from_user(void *to, const void __user *from, unsigned long n)
{
return copy_from_user(to, from, n);
}
__rust_helper unsigned long
rust_helper_copy_to_user(void __user *to, const void *from, unsigned long n)
{
return copy_to_user(to, from, n);
}
#ifdef INLINE_COPY_USER
__rust_helper
unsigned long rust_helper__copy_from_user(void *to, const void __user *from, unsigned long n)
{
return _inline_copy_from_user(to, from, n);
}
__rust_helper
unsigned long rust_helper__copy_to_user(void __user *to, const void *from, unsigned long n)
{
return _inline_copy_to_user(to, from, n);
}
#endif
Annotation
- Immediate include surface: `linux/uaccess.h`.
- Detected declarations: `function rust_helper_copy_from_user`, `function rust_helper_copy_to_user`, `function rust_helper__copy_from_user`, `function rust_helper__copy_to_user`.
- Atlas domain: Rust Kernel Layer / Rust API Membrane.
- Implementation status: source implementation candidate.
- This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
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.