rust/kernel/device.rs
Source file repositories/reference/linux-study-clean/rust/kernel/device.rs
File Facts
- System
- Linux kernel
- Corpus path
rust/kernel/device.rs- Extension
.rs- Size
- 34110 bytes
- Lines
- 924
- 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.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
function Somefunction pr_alertfunction pr_critfunction pr_errfunction pr_warnfunction pr_noticefunction pr_infofunction pr_dbgfunction printkfunction inc_reffunction dec_ref
Annotated Snippet
pub fn pr_emerg(&self, args: fmt::Arguments<'_>) {
// SAFETY: `klevel` is null-terminated, uses one of the kernel constants.
unsafe { self.printk(bindings::KERN_EMERG, args) };
}
/// Prints an alert-level message (level 1) prefixed with device information.
///
/// More details are available from [`dev_alert`].
///
/// [`dev_alert`]: crate::dev_alert
pub fn pr_alert(&self, args: fmt::Arguments<'_>) {
// SAFETY: `klevel` is null-terminated, uses one of the kernel constants.
unsafe { self.printk(bindings::KERN_ALERT, args) };
}
/// Prints a critical-level message (level 2) prefixed with device information.
///
/// More details are available from [`dev_crit`].
///
/// [`dev_crit`]: crate::dev_crit
pub fn pr_crit(&self, args: fmt::Arguments<'_>) {
// SAFETY: `klevel` is null-terminated, uses one of the kernel constants.
unsafe { self.printk(bindings::KERN_CRIT, args) };
}
/// Prints an error-level message (level 3) prefixed with device information.
///
/// More details are available from [`dev_err`].
///
/// [`dev_err`]: crate::dev_err
pub fn pr_err(&self, args: fmt::Arguments<'_>) {
// SAFETY: `klevel` is null-terminated, uses one of the kernel constants.
unsafe { self.printk(bindings::KERN_ERR, args) };
}
/// Prints a warning-level message (level 4) prefixed with device information.
///
/// More details are available from [`dev_warn`].
///
/// [`dev_warn`]: crate::dev_warn
pub fn pr_warn(&self, args: fmt::Arguments<'_>) {
// SAFETY: `klevel` is null-terminated, uses one of the kernel constants.
unsafe { self.printk(bindings::KERN_WARNING, args) };
}
/// Prints a notice-level message (level 5) prefixed with device information.
///
/// More details are available from [`dev_notice`].
///
/// [`dev_notice`]: crate::dev_notice
pub fn pr_notice(&self, args: fmt::Arguments<'_>) {
// SAFETY: `klevel` is null-terminated, uses one of the kernel constants.
unsafe { self.printk(bindings::KERN_NOTICE, args) };
}
/// Prints an info-level message (level 6) prefixed with device information.
///
/// More details are available from [`dev_info`].
///
/// [`dev_info`]: crate::dev_info
pub fn pr_info(&self, args: fmt::Arguments<'_>) {
// SAFETY: `klevel` is null-terminated, uses one of the kernel constants.
unsafe { self.printk(bindings::KERN_INFO, args) };
}
/// Prints a debug-level message (level 7) prefixed with device information.
///
/// More details are available from [`dev_dbg`].
///
/// [`dev_dbg`]: crate::dev_dbg
pub fn pr_dbg(&self, args: fmt::Arguments<'_>) {
if cfg!(debug_assertions) {
// SAFETY: `klevel` is null-terminated, uses one of the kernel constants.
unsafe { self.printk(bindings::KERN_DEBUG, args) };
}
}
/// Prints the provided message to the console.
///
/// # Safety
///
/// Callers must ensure that `klevel` is null-terminated; in particular, one of the
/// `KERN_*`constants, for example, `KERN_CRIT`, `KERN_ALERT`, etc.
#[cfg_attr(not(CONFIG_PRINTK), allow(unused_variables))]
unsafe fn printk(&self, klevel: &[u8], msg: fmt::Arguments<'_>) {
// SAFETY: `klevel` is null-terminated and one of the kernel constants. `self.as_raw`
// is valid because `self` is valid. The "%pA" format string expects a pointer to
// `fmt::Arguments`, which is what we're passing as the last argument.
#[cfg(CONFIG_PRINTK)]
unsafe {
Annotation
- Detected declarations: `function Some`, `function pr_alert`, `function pr_crit`, `function pr_err`, `function pr_warn`, `function pr_notice`, `function pr_info`, `function pr_dbg`, `function printk`, `function inc_ref`.
- Atlas domain: Rust Kernel Layer / Rust API Membrane.
- 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.