# sysexits.rb - preferred exit codes for programs
#
# Author:: Apple Inc.
# Documentation:: Apple Inc.
# Copyright © 2011, Apple Inc.
# License:: All rights reserved.
#

=begin
/*
 * Copyright (c) 1987, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)sysexits.h	8.1 (Berkeley) 6/2/93
 */
=end

# == Apple-internal documentation
#
# == SysExits
#
# Preferred exit codes for programs
#
# == Description
#
# Error numbers begin at EX__BASE to reduce the possibility of
# clashing with other exit statuses that random programs may
# already return.  The meaning of the codes is approximately
# as follows:
#
# +EX_USAGE+:: The command was used incorrectly, e.g., with the wrong number of
#              arguments, a bad flag, a bad syntax in a parameter, or whatever.
# +EX_DATAERR+:: The input data was incorrect in some way.
#                This should only be used for user's data & not system files.
# +EX_NOINPUT+:: An input file (not a system file) did not
#                exist or was not readable.  This could also include
#                errors like "No message" to a mailer (if it cared
#                to catch it).
# +EX_NOUSER+:: The user specified did not exist.  This might
#               be used for mail addresses or remote logins.
# +EX_NOHOST+:: The host specified did not exist.  This is used
#               in mail addresses or network requests.
# +EX_UNAVAILABLE+:: A service is unavailable.  This can occur
#                    if a support program or file does not exist.  This
#                    can also be used as a catchall message when something
#                    you wanted to do doesn't work, but you don't know why.
# +EX_SOFTWARE+:: An internal software error has been detected.
#                 This should be limited to non-operating system related
#                 errors as possible.
# +EX_OSERR+:: An operating system error has been detected.
#              This is intended to be used for such things as "cannot
#              fork", "cannot create pipe", or the like.  It includes
#              things like getuid returning a user that does not
#              exist in the passwd file.
# +EX_OSFILE+:: Some system file (e.g., /etc/passwd, /etc/utmp,
#               etc.) does not exist, cannot be opened, or has some
#               sort of error (e.g., syntax error).
# +EX_CANTCREAT+:: A (user specified) output file cannot be created.
# +EX_IOERR+:: An error occurred while doing I/O on some file.
# +EX_TEMPFAIL+:: Temporary failure, indicating something that
#                 is not really an error.  In sendmail, this means
#                 that a mailer (e.g.) could not create a connection,
#                 and the request should be reattempted later.
# +EX_PROTOCOL+:: The remote system returned something that
#                 was "not possible" during a protocol exchange.
# +EX_NOPERM+:: You did not have sufficient permission to
#               perform the operation.  This is not intended for
#               file system problems, which should use NOINPUT or
#               CANTCREAT, but rather for higher level permissions.
#
# == Further documentation
#
# See OS documentation in sysexits(3).
#

module SysExits
	# successful termination
	EX_OK = 0

	# base value for error messages
	EX__BASE = 64

	# command line usage error
	EX_USAGE = 64
	# data format error
	EX_DATAERR = 65
	# cannot open input
	EX_NOINPUT = 66
	# addressee unknown
	EX_NOUSER = 67
	# host name unknown
	EX_NOHOST = 68
	# service unavailable
	EX_UNAVAILABLE = 69
	# internal software error
	EX_SOFTWARE = 70
	# system error (e.g., can't fork)
	EX_OSERR = 71
	# critical OS file missing
	EX_OSFILE = 72
	# can't create (user) output file
	EX_CANTCREAT = 73
	# input/output error
	EX_IOERR = 74
	# temp failure; user is invited to retry
	EX_TEMPFAIL = 75
	# remote error in protocol
	EX_PROTOCOL = 76
	# permission denied
	EX_NOPERM = 77
	# configuration error
	EX_CONFIG = 78

	# maximum listed value
	EX__MAX = 78
end