// Copyright (c) 2022 John Millikin <john@john-millikin.com>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.
//
// SPDX-License-Identifier: 0BSD

//! This library defines a single type, the [Error] enum, which represents the
//! symbolic constants for error numbers defined in the POSIX standard.

#![no_std]

/// Symbolic constants for error numbers defined in the POSIX standard.
#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[non_exhaustive]
pub enum Error {
	/// Argument list too long.
	E2BIG,
	/// Permission denied.
	EACCES,
	/// Address in use.
	EADDRINUSE,
	/// Address not available.
	EADDRNOTAVAIL,
	/// Address family not supported.
	EAFNOSUPPORT,
	/// Resource unavailable, try again.
	EAGAIN,
	/// Connection already in progress.
	EALREADY,
	/// Bad file descriptor.
	EBADF,
	/// Bad message.
	EBADMSG,
	/// Device or resource busy.
	EBUSY,
	/// Operation canceled.
	ECANCELED,
	/// No child processes.
	ECHILD,
	/// Connection aborted.
	ECONNABORTED,
	/// Connection refused.
	ECONNREFUSED,
	/// Connection reset.
	ECONNRESET,
	/// Resource deadlock would occur.
	EDEADLK,
	/// Destination address required.
	EDESTADDRREQ,
	/// Mathematics argument out of domain of function.
	EDOM,
	/// Reserved.
	EDQUOT,
	/// File exists.
	EEXIST,
	/// Bad address.
	EFAULT,
	/// File too large.
	EFBIG,
	/// Host is unreachable.
	EHOSTUNREACH,
	/// Identifier removed.
	EIDRM,
	/// Illegal byte sequence.
	EILSEQ,
	/// Operation in progress.
	EINPROGRESS,
	/// Interrupted function.
	EINTR,
	/// Invalid argument.
	EINVAL,
	/// I/O error.
	EIO,
	/// Socket is connected.
	EISCONN,
	/// Is a directory.
	EISDIR,
	/// Too many levels of symbolic links.
	ELOOP,
	/// File descriptor value too large.
	EMFILE,
	/// Too many links.
	EMLINK,
	/// Message too large.
	EMSGSIZE,
	/// Reserved.
	EMULTIHOP,
	/// Filename too long.
	ENAMETOOLONG,
	/// Network is down.
	ENETDOWN,
	/// Connection aborted by network.
	ENETRESET,
	/// Network unreachable.
	ENETUNREACH,
	/// Too many files open in system.
	ENFILE,
	/// No buffer space available.
	ENOBUFS,
	/// No message is available on the STREAM head read queue.
	ENODATA,
	/// No such device.
	ENODEV,
	/// No such file or directory.
	ENOENT,
	/// Executable file format error.
	ENOEXEC,
	/// No locks available.
	ENOLCK,
	/// Reserved.
	ENOLINK,
	/// Not enough space.
	ENOMEM,
	/// No message of the desired type.
	ENOMSG,
	/// Protocol not available.
	ENOPROTOOPT,
	/// No space left on device.
	ENOSPC,
	/// No STREAM resources.
	ENOSR,
	/// Not a STREAM.
	ENOSTR,
	/// Functionality not supported.
	ENOSYS,
	/// The socket is not connected.
	ENOTCONN,
	/// Not a directory or a symbolic link to a directory.
	ENOTDIR,
	/// Directory not empty.
	ENOTEMPTY,
	/// State not recoverable.
	ENOTRECOVERABLE,
	/// Not a socket.
	ENOTSOCK,
	/// Not supported.
	ENOTSUP,
	/// Inappropriate I/O control operation.
	ENOTTY,
	/// No such device or address.
	ENXIO,
	/// Operation not supported on socket.
	EOPNOTSUPP,
	/// Value too large to be stored in data type.
	EOVERFLOW,
	/// Previous owner died.
	EOWNERDEAD,
	/// Operation not permitted.
	EPERM,
	/// Broken pipe.
	EPIPE,
	/// Protocol error.
	EPROTO,
	/// Protocol not supported.
	EPROTONOSUPPORT,
	/// Protocol wrong type for socket.
	EPROTOTYPE,
	/// Result too large.
	ERANGE,
	/// Read-only file system.
	EROFS,
	/// Invalid seek.
	ESPIPE,
	/// No such process.
	ESRCH,
	/// Reserved.
	ESTALE,
	/// Stream ioctl() timeout.
	ETIME,
	/// Connection timed out.
	ETIMEDOUT,
	/// Text file busy.
	ETXTBSY,
	/// Operation would block.
	EWOULDBLOCK,
	/// Cross-device link.
	EXDEV,
}