Types v0.1.0

Linux's scalar types for process, file and user identifiers.

`FileDescriptor`

pub type FileDescriptor = int32

A file descriptor, as the kernel numbers one. Signed and small. A syscall taking one receives it sign-extended to a full register, which SignExtendFd does.

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`FileMode`

pub type FileMode = uint32

A file's type and permission bits, as open and stat carry them.

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`FileOffset`

pub type FileOffset = int64

A byte offset within a file, which the 64-bit ABI makes 64 bits everywhere.

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`GroupId`

pub type GroupId = uint32

A group identifier.

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`ProcessId`

pub type ProcessId = int32

A process identifier, as getpid and its relatives report one. Signed, because several calls overload the negative range to mean a process group.

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`UserId`

pub type UserId = uint32

A user identifier.

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Timespec

A duration or an instant, as seconds and nanoseconds.

Directories and links

The working directory, directory entries, removal, renaming and links.

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