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+/*
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+ * Copyright (c) 1987, 1993
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+ * The Regents of the University of California. All rights reserved.
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+ *
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+ * Redistribution and use in source and binary forms, with or without
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+ * modification, are permitted provided that the following conditions
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+ * are met:
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+ * 1. Redistributions of source code must retain the above copyright
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+ * notice, this list of conditions and the following disclaimer.
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+ * 2. Redistributions in binary form must reproduce the above copyright
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+ * notice, this list of conditions and the following disclaimer in the
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+ * documentation and/or other materials provided with the distribution.
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+ * 4. Neither the name of the University nor the names of its contributors
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+ * may be used to endorse or promote products derived from this software
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+ * without specific prior written permission.
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+ *
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+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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+ * SUCH DAMAGE.
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+ *
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+ * @(#)sysexits.h 8.1 (Berkeley) 6/2/93
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+ */
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+
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+#ifndef _SYSEXITS_H
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+#define _SYSEXITS_H 1
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+
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+/*
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+ * SYSEXITS.H -- Exit status codes for system programs.
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+ *
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+ * This include file attempts to categorize possible error
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+ * exit statuses for system programs, notably delivermail
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+ * and the Berkeley network.
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+ *
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+ * Error numbers begin at EX__BASE to reduce the possibility of
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+ * clashing with other exit statuses that random programs may
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+ * already return. The meaning of the codes is approximately
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+ * as follows:
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+ *
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+ * EX_USAGE -- The command was used incorrectly, e.g., with
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+ * the wrong number of arguments, a bad flag, a bad
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+ * syntax in a parameter, or whatever.
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+ * EX_DATAERR -- The input data was incorrect in some way.
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+ * This should only be used for user's data & not
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+ * system files.
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+ * EX_NOINPUT -- An input file (not a system file) did not
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+ * exist or was not readable. This could also include
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+ * errors like "No message" to a mailer (if it cared
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+ * to catch it).
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+ * EX_NOUSER -- The user specified did not exist. This might
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+ * be used for mail addresses or remote logins.
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+ * EX_NOHOST -- The host specified did not exist. This is used
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+ * in mail addresses or network requests.
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+ * EX_UNAVAILABLE -- A service is unavailable. This can occur
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+ * if a support program or file does not exist. This
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+ * can also be used as a catchall message when something
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+ * you wanted to do doesn't work, but you don't know
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+ * why.
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+ * EX_SOFTWARE -- An internal software error has been detected.
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+ * This should be limited to non-operating system related
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+ * errors as possible.
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+ * EX_OSERR -- An operating system error has been detected.
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+ * This is intended to be used for such things as "cannot
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+ * fork", "cannot create pipe", or the like. It includes
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+ * things like getuid returning a user that does not
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+ * exist in the passwd file.
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+ * EX_OSFILE -- Some system file (e.g., /etc/passwd, /etc/utmp,
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+ * etc.) does not exist, cannot be opened, or has some
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+ * sort of error (e.g., syntax error).
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+ * EX_CANTCREAT -- A (user specified) output file cannot be
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+ * created.
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+ * EX_IOERR -- An error occurred while doing I/O on some file.
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+ * EX_TEMPFAIL -- temporary failure, indicating something that
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+ * is not really an error. In sendmail, this means
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+ * that a mailer (e.g.) could not create a connection,
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+ * and the request should be reattempted later.
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+ * EX_PROTOCOL -- the remote system returned something that
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+ * was "not possible" during a protocol exchange.
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+ * EX_NOPERM -- You did not have sufficient permission to
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+ * perform the operation. This is not intended for
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+ * file system problems, which should use NOINPUT or
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+ * CANTCREAT, but rather for higher level permissions.
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+ */
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+
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+#define EX_OK 0 /* successful termination */
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+
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+#define EX__BASE 64 /* base value for error messages */
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+
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+#define EX_USAGE 64 /* command line usage error */
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+#define EX_DATAERR 65 /* data format error */
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+#define EX_NOINPUT 66 /* cannot open input */
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+#define EX_NOUSER 67 /* addressee unknown */
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+#define EX_NOHOST 68 /* host name unknown */
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+#define EX_UNAVAILABLE 69 /* service unavailable */
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+#define EX_SOFTWARE 70 /* internal software error */
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+#define EX_OSERR 71 /* system error (e.g., can't fork) */
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+#define EX_OSFILE 72 /* critical OS file missing */
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+#define EX_CANTCREAT 73 /* can't create (user) output file */
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+#define EX_IOERR 74 /* input/output error */
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+#define EX_TEMPFAIL 75 /* temp failure; user is invited to retry */
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+#define EX_PROTOCOL 76 /* remote error in protocol */
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+#define EX_NOPERM 77 /* permission denied */
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+#define EX_CONFIG 78 /* configuration error */
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+
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+#define EX__MAX 78 /* maximum listed value */
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+
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+#endif /* sysexits.h */
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