Enum libmmap::MemoryMapError

pub enum MemoryMapError {
    FdNotAvail,
    InvalidFd,
    Unaligned,
    NoMapSupport,
    NoMem,
    ZeroLength,
    Unknown(isize),
    UnsupProt,
    UnsupOffset,
    AlreadyExists,
    VirtualAlloc(i32),
    CreateFileMappingW(i32),
    MapViewOfFile(i32),
}

Possible errors when creating a map.

Variants

FdNotAvail

The following are POSIX-specific

fd was not open for reading or, if using MapWritable, was not open for writing.

InvalidFd

fd was not valid

Unaligned

Either the address given by MapAddr or offset given by MapOffset was not a multiple of MemoryMap::granularity (unaligned to page size).

NoMapSupport

With MapFd, the fd does not support mapping.

NoMem

If using MapAddr, the address + min_len was outside of the process's address space. If using MapFd, the target of the fd didn't have enough resources to fulfill the request.

ZeroLength

A zero-length map was requested. This is invalid according to POSIX. Not all platforms obey this, but this wrapper does.

Unknown(isize)

Unrecognized error. The inner value is the unrecognized errno.

UnsupProt

The following are Windows-specific

Unsupported combination of protection flags (MapReadable/MapWritable/MapExecutable).

UnsupOffset

When using MapFd, MapOffset was given (Windows does not support this at all)

AlreadyExists

When using MapFd, there was already a mapping to the file.

VirtualAlloc(i32)

Unrecognized error from VirtualAlloc. The inner value is the return value of GetLastError.

CreateFileMappingW(i32)

Unrecognized error from CreateFileMapping. The inner value is the return value of GetLastError.

MapViewOfFile(i32)

Unrecognized error from MapViewOfFile. The inner value is the return value of GetLastError.

Trait Implementations

impl Debug for MemoryMapError

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for MemoryMapError

fn clone(&self) -> MemoryMapError

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MemoryMapError

impl Display for MemoryMapError

fn fmt(&self, out: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Error for MemoryMapError

fn description(&self) -> &str

A short description of the error.

fn cause(&self) -> Option<&Error>

The lower-level cause of this error, if any.