Module user 

Available on crate feature uspace only.

User execution and nofault memory access.

Modules

ESR_EL1

Structs

ExceptionInfo

Information about an exception that occurred in user space.

ExceptionSyndrome

Architecture-neutral syndrome fields for user-space exceptions.

Field

Specific section of a register.

FieldValue

Values for the specific register fields.

LocalRegisterCopy

A read-write copy of register contents.

RegisterDebugValue

RegisterDebugValue captures a register’s value and implements fmt::Debug to provide a human-readable representation of the register state.

UserContext

Context to enter user space.

Enums

ExceptionKind

A generalized kind for ExceptionInfo.

ReturnReason

A reason as to why the control of the CPU is returned from the user space to the kernel.

UserAccessError

Failure returned by a nofault user read.

UserAccessType

Direction of an architecture-level user-memory access check.

UserAtomicError

Failure returned by a nofault user atomic operation.

UserAtomicU32Op

Atomic operation supported by user_atomic_u32.

Constants

ESR_EL1

Traits

NoUninit

Marker trait for “plain old data” types with no uninit (or padding) bytes.

Readable

Readable register

RegisterDebugInfo

RegisterDebugInfo exposes debugging information from register types.

RegisterLongName

Descriptive name for each register.

TryFromValue

Conversion of raw register value into enumerated values member. Implemented inside register_bitfields! macro for each bit field.

UIntLike

Trait representing the base type of registers.

Functions

user_access_ok_page^⚠

Probes whether EL0 is permitted to access the page containing vaddr under the current user translation regime (TTBR0_EL1), without taking any lock.

user_atomic_u32^⚠

Atomically updates one aligned user-space word without resolving faults.

user_cmpxchg_u32^⚠

Compares and conditionally replaces one aligned user word without faulting in pages.

user_copy^⚠

Copies data from source to destination, where addresses may be in user space. Equivalent to memcpy.

user_read_u32^⚠

Reads one aligned user-space word without resolving faults.