X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=include%2Fac%2Ferrno.h;h=e1b7168cacaa2352f68ed106d0aac918226ea47d;hb=db9130b6a723bfd56da90e929c2397379ee21741;hp=48fa87da6230eea3c2ecee82615e6918d86bd834;hpb=29a7d6229a0c25707d78d3dac2334b2178df4217;p=openldap
diff --git a/include/ac/errno.h b/include/ac/errno.h
index 48fa87da62..e1b7168cac 100644
--- a/include/ac/errno.h
+++ b/include/ac/errno.h
@@ -1,12 +1,17 @@
/* Generic errno.h */
-/*
- * Copyright 1998,1999 The OpenLDAP Foundation, Redwood City, California, USA
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software .
+ *
+ * Copyright 1998-2004 The OpenLDAP Foundation.
* All rights reserved.
*
- * Redistribution and use in source and binary forms are permitted only
- * as authorized by the OpenLDAP Public License. A copy of this
- * license is available at http://www.OpenLDAP.org/license.html or
- * in file LICENSE in the top-level directory of the distribution.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * .
*/
#ifndef _AC_ERRNO_H
@@ -18,16 +23,33 @@
# include
#endif
-#ifdef DECL_SYS_ERRLIST
#ifndef HAVE_SYS_ERRLIST
-#define sys_nerr 0
-#define sys_errlist ((char **)0)
-#else
-extern int sys_nerr;
-extern char *sys_errlist[];
+ /* no sys_errlist */
+# define sys_nerr 0
+# define sys_errlist ((char **)0)
+#elif DECL_SYS_ERRLIST
+ /* have sys_errlist but need declaration */
+ LDAP_LIBC_V(int) sys_nerr;
+ LDAP_LIBC_V(char) *sys_errlist[];
#endif
+
+#undef _AC_ERRNO_UNKNOWN
+#define _AC_ERRNO_UNKNOWN "unknown error"
+
+#ifdef HAVE_SYS_ERRLIST
+ /* this is thread safe */
+# define STRERROR(e) ( (e) > -1 && (e) < sys_nerr \
+ ? sys_errlist[(e)] : _AC_ERRNO_UNKNOWN )
+
+#elif defined( HAVE_STRERROR )
+ /* this may not be thread safe */
+ /* and, yes, some implementations of strerror may return NULL */
+# define STRERROR(e) ( strerror(e) \
+ ? strerror(e) : _AC_ERRNO_UNKNOWN )
+
+#else
+ /* this is thread safe */
+# define STRERROR(e) ( _AC_ERRNO_UNKNOWN )
#endif
-
-/* use _POSIX_VERSION for POSIX.1 code */
#endif /* _AC_ERRNO_H */