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56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/* Generic errno.h */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2009 The OpenLDAP Foundation.
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* 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 only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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#ifndef _AC_ERRNO_H
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#define _AC_ERRNO_H
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#if defined( HAVE_ERRNO_H )
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# include <errno.h>
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#elif defined( HAVE_SYS_ERRNO_H )
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# include <sys/errno.h>
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#endif
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#ifndef HAVE_SYS_ERRLIST
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/* no sys_errlist */
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# define sys_nerr 0
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# define sys_errlist ((char **)0)
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#elif defined( DECL_SYS_ERRLIST )
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/* have sys_errlist but need declaration */
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LDAP_LIBC_V(int) sys_nerr;
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LDAP_LIBC_V(char) *sys_errlist[];
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#endif
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#undef _AC_ERRNO_UNKNOWN
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#define _AC_ERRNO_UNKNOWN "unknown error"
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#ifdef HAVE_SYS_ERRLIST
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/* this is thread safe */
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# define STRERROR(e) ( (e) > -1 && (e) < sys_nerr \
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? sys_errlist[(e)] : _AC_ERRNO_UNKNOWN )
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#elif defined( HAVE_STRERROR )
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/* this may not be thread safe */
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/* and, yes, some implementations of strerror may return NULL */
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# define STRERROR(e) ( strerror(e) \
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? strerror(e) : _AC_ERRNO_UNKNOWN )
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#else
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/* this is thread safe */
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# define STRERROR(e) ( _AC_ERRNO_UNKNOWN )
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#endif
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#endif /* _AC_ERRNO_H */
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