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diff --git a/doc/errno.list.linux.txt b/doc/errno.list.linux.txt
new file mode 100644
index 000000000..baa50792d
--- /dev/null
+++ b/doc/errno.list.linux.txt
@@ -0,0 +1,1586 @@
+#define ICONV_SUPPORTS_ERRNO 1
+#include <errno.h>
+/* Error constants.  Linux specific version.
+   Copyright (C) 1996, 1997, 1998, 1999, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifdef _ERRNO_H
+
+# undef EDOM
+# undef EILSEQ
+# undef ERANGE
+# include <linux/errno.h>
+
+/* Linux has no ENOTSUP error code.  */
+# define ENOTSUP EOPNOTSUPP
+
+/* Older Linux versions also had no ECANCELED error code.  */
+# ifndef ECANCELED
+#  define ECANCELED	125
+# endif
+
+/* Support for error codes to support robust mutexes was added later, too.  */
+# ifndef EOWNERDEAD
+#  define EOWNERDEAD		130
+#  define ENOTRECOVERABLE	131
+# endif
+
+# ifndef __ASSEMBLER__
+/* Function to get address of global `errno' variable.  */
+extern int *__errno_location (void) __THROW __attribute__ ((__const__));
+
+#  if !defined _LIBC || defined _LIBC_REENTRANT
+/* When using threads, errno is a per-thread value.  */
+#   define errno (*__errno_location ())
+#  endif
+# endif /* !__ASSEMBLER__ */
+#endif /* _ERRNO_H */
+
+#if !defined _ERRNO_H && defined __need_Emath
+/* This is ugly but the kernel header is not clean enough.  We must
+   define only the values EDOM, EILSEQ and ERANGE in case __need_Emath is
+   defined.  */
+# define EDOM	33	/* Math argument out of domain of function.  */
+# define EILSEQ	84	/* Illegal byte sequence.  */
+# define ERANGE	34	/* Math result not representable.  */
+#endif /* !_ERRNO_H && __need_Emath */
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APR_ERRNO_H
+#define APR_ERRNO_H
+
+/**
+ * @file apr_errno.h
+ * @brief APR Error Codes
+ */
+
+#include "apr.h"
+
+#if APR_HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @defgroup apr_errno Error Codes
+ * @ingroup APR 
+ * @{
+ */
+
+/**
+ * Type for specifying an error or status code.
+ */
+typedef int apr_status_t;
+
+/**
+ * Return a human readable string describing the specified error.
+ * @param statcode The error code the get a string for.
+ * @param buf A buffer to hold the error string.
+ * @param bufsize Size of the buffer to hold the string.
+ */
+APR_DECLARE(char *) apr_strerror(apr_status_t statcode, char *buf, 
+                                 apr_size_t bufsize);
+
+#if defined(DOXYGEN)
+/**
+ * @def APR_FROM_OS_ERROR(os_err_type syserr)
+ * Fold a platform specific error into an apr_status_t code.
+ * @return apr_status_t
+ * @param e The platform os error code.
+ * @warning  macro implementation; the syserr argument may be evaluated
+ *      multiple times.
+ */
+#define APR_FROM_OS_ERROR(e) (e == 0 ? APR_SUCCESS : e + APR_OS_START_SYSERR)
+
+/**
+ * @def APR_TO_OS_ERROR(apr_status_t statcode)
+ * @return os_err_type
+ * Fold an apr_status_t code back to the native platform defined error.
+ * @param e The apr_status_t folded platform os error code.
+ * @warning  macro implementation; the statcode argument may be evaluated
+ *      multiple times.  If the statcode was not created by apr_get_os_error 
+ *      or APR_FROM_OS_ERROR, the results are undefined.
+ */
+#define APR_TO_OS_ERROR(e) (e == 0 ? APR_SUCCESS : e - APR_OS_START_SYSERR)
+
+/** @def apr_get_os_error()
+ * @return apr_status_t the last platform error, folded into apr_status_t, on most platforms
+ * @remark This retrieves errno, or calls a GetLastError() style function, and
+ *      folds it with APR_FROM_OS_ERROR.  Some platforms (such as OS2) have no
+ *      such mechanism, so this call may be unsupported.  Do NOT use this
+ *      call for socket errors from socket, send, recv etc!
+ */
+
+/** @def apr_set_os_error(e)
+ * Reset the last platform error, unfolded from an apr_status_t, on some platforms
+ * @param e The OS error folded in a prior call to APR_FROM_OS_ERROR()
+ * @warning This is a macro implementation; the statcode argument may be evaluated
+ *      multiple times.  If the statcode was not created by apr_get_os_error
+ *      or APR_FROM_OS_ERROR, the results are undefined.  This macro sets
+ *      errno, or calls a SetLastError() style function, unfolding statcode
+ *      with APR_TO_OS_ERROR.  Some platforms (such as OS2) have no such
+ *      mechanism, so this call may be unsupported.
+ */
+
+/** @def apr_get_netos_error()
+ * Return the last socket error, folded into apr_status_t, on all platforms
+ * @remark This retrieves errno or calls a GetLastSocketError() style function,
+ *      and folds it with APR_FROM_OS_ERROR.
+ */
+
+/** @def apr_set_netos_error(e)
+ * Reset the last socket error, unfolded from an apr_status_t
+ * @param e The socket error folded in a prior call to APR_FROM_OS_ERROR()
+ * @warning This is a macro implementation; the statcode argument may be evaluated
+ *      multiple times.  If the statcode was not created by apr_get_os_error
+ *      or APR_FROM_OS_ERROR, the results are undefined.  This macro sets
+ *      errno, or calls a WSASetLastError() style function, unfolding 
+ *      socketcode with APR_TO_OS_ERROR.
+ */
+
+#endif /* defined(DOXYGEN) */
+
+/**
+ * APR_OS_START_ERROR is where the APR specific error values start.
+ */
+#define APR_OS_START_ERROR     20000
+/**
+ * APR_OS_ERRSPACE_SIZE is the maximum number of errors you can fit
+ *    into one of the error/status ranges below -- except for
+ *    APR_OS_START_USERERR, which see.
+ */
+#define APR_OS_ERRSPACE_SIZE 50000
+/**
+ * APR_OS_START_STATUS is where the APR specific status codes start.
+ */
+#define APR_OS_START_STATUS    (APR_OS_START_ERROR + APR_OS_ERRSPACE_SIZE)
+/**
+ * APR_OS_START_USERERR are reserved for applications that use APR that
+ *     layer their own error codes along with APR's.  Note that the
+ *     error immediately following this one is set ten times farther
+ *     away than usual, so that users of apr have a lot of room in
+ *     which to declare custom error codes.
+ */
+#define APR_OS_START_USERERR    (APR_OS_START_STATUS + APR_OS_ERRSPACE_SIZE)
+/**
+ * APR_OS_START_USEERR is obsolete, defined for compatibility only.
+ * Use APR_OS_START_USERERR instead.
+ */
+#define APR_OS_START_USEERR     APR_OS_START_USERERR
+/**
+ * APR_OS_START_CANONERR is where APR versions of errno values are defined
+ *     on systems which don't have the corresponding errno.
+ */
+#define APR_OS_START_CANONERR  (APR_OS_START_USERERR \
+                                 + (APR_OS_ERRSPACE_SIZE * 10))
+/**
+ * APR_OS_START_EAIERR folds EAI_ error codes from getaddrinfo() into 
+ *     apr_status_t values.
+ */
+#define APR_OS_START_EAIERR    (APR_OS_START_CANONERR + APR_OS_ERRSPACE_SIZE)
+/**
+ * APR_OS_START_SYSERR folds platform-specific system error values into 
+ *     apr_status_t values.
+ */
+#define APR_OS_START_SYSERR    (APR_OS_START_EAIERR + APR_OS_ERRSPACE_SIZE)
+
+/** no error. */
+#define APR_SUCCESS 0
+
+/** 
+ * @defgroup APR_Error APR Error Values
+ * <PRE>
+ * <b>APR ERROR VALUES</b>
+ * APR_ENOSTAT      APR was unable to perform a stat on the file 
+ * APR_ENOPOOL      APR was not provided a pool with which to allocate memory
+ * APR_EBADDATE     APR was given an invalid date 
+ * APR_EINVALSOCK   APR was given an invalid socket
+ * APR_ENOPROC      APR was not given a process structure
+ * APR_ENOTIME      APR was not given a time structure
+ * APR_ENODIR       APR was not given a directory structure
+ * APR_ENOLOCK      APR was not given a lock structure
+ * APR_ENOPOLL      APR was not given a poll structure
+ * APR_ENOSOCKET    APR was not given a socket
+ * APR_ENOTHREAD    APR was not given a thread structure
+ * APR_ENOTHDKEY    APR was not given a thread key structure
+ * APR_ENOSHMAVAIL  There is no more shared memory available
+ * APR_EDSOOPEN     APR was unable to open the dso object.  For more 
+ *                  information call apr_dso_error().
+ * APR_EGENERAL     General failure (specific information not available)
+ * APR_EBADIP       The specified IP address is invalid
+ * APR_EBADMASK     The specified netmask is invalid
+ * APR_ESYMNOTFOUND Could not find the requested symbol
+ * </PRE>
+ *
+ * <PRE>
+ * <b>APR STATUS VALUES</b>
+ * APR_INCHILD        Program is currently executing in the child
+ * APR_INPARENT       Program is currently executing in the parent
+ * APR_DETACH         The thread is detached
+ * APR_NOTDETACH      The thread is not detached
+ * APR_CHILD_DONE     The child has finished executing
+ * APR_CHILD_NOTDONE  The child has not finished executing
+ * APR_TIMEUP         The operation did not finish before the timeout
+ * APR_INCOMPLETE     The operation was incomplete although some processing
+ *                    was performed and the results are partially valid
+ * APR_BADCH          Getopt found an option not in the option string
+ * APR_BADARG         Getopt found an option that is missing an argument 
+ *                    and an argument was specified in the option string
+ * APR_EOF            APR has encountered the end of the file
+ * APR_NOTFOUND       APR was unable to find the socket in the poll structure
+ * APR_ANONYMOUS      APR is using anonymous shared memory
+ * APR_FILEBASED      APR is using a file name as the key to the shared memory
+ * APR_KEYBASED       APR is using a shared key as the key to the shared memory
+ * APR_EINIT          Ininitalizer value.  If no option has been found, but 
+ *                    the status variable requires a value, this should be used
+ * APR_ENOTIMPL       The APR function has not been implemented on this 
+ *                    platform, either because nobody has gotten to it yet, 
+ *                    or the function is impossible on this platform.
+ * APR_EMISMATCH      Two passwords do not match.
+ * APR_EABSOLUTE      The given path was absolute.
+ * APR_ERELATIVE      The given path was relative.
+ * APR_EINCOMPLETE    The given path was neither relative nor absolute.
+ * APR_EABOVEROOT     The given path was above the root path.
+ * APR_EBUSY          The given lock was busy.
+ * APR_EPROC_UNKNOWN  The given process wasn't recognized by APR
+ * </PRE>
+ * @{
+ */
+/** @see APR_STATUS_IS_ENOSTAT */
+#define APR_ENOSTAT        (APR_OS_START_ERROR + 1)
+/** @see APR_STATUS_IS_ENOPOOL */
+#define APR_ENOPOOL        (APR_OS_START_ERROR + 2)
+/* empty slot: +3 */
+/** @see APR_STATUS_IS_EBADDATE */
+#define APR_EBADDATE       (APR_OS_START_ERROR + 4)
+/** @see APR_STATUS_IS_EINVALSOCK */
+#define APR_EINVALSOCK     (APR_OS_START_ERROR + 5)
+/** @see APR_STATUS_IS_ENOPROC */
+#define APR_ENOPROC        (APR_OS_START_ERROR + 6)
+/** @see APR_STATUS_IS_ENOTIME */
+#define APR_ENOTIME        (APR_OS_START_ERROR + 7)
+/** @see APR_STATUS_IS_ENODIR */
+#define APR_ENODIR         (APR_OS_START_ERROR + 8)
+/** @see APR_STATUS_IS_ENOLOCK */
+#define APR_ENOLOCK        (APR_OS_START_ERROR + 9)
+/** @see APR_STATUS_IS_ENOPOLL */
+#define APR_ENOPOLL        (APR_OS_START_ERROR + 10)
+/** @see APR_STATUS_IS_ENOSOCKET */
+#define APR_ENOSOCKET      (APR_OS_START_ERROR + 11)
+/** @see APR_STATUS_IS_ENOTHREAD */
+#define APR_ENOTHREAD      (APR_OS_START_ERROR + 12)
+/** @see APR_STATUS_IS_ENOTHDKEY */
+#define APR_ENOTHDKEY      (APR_OS_START_ERROR + 13)
+/** @see APR_STATUS_IS_EGENERAL */
+#define APR_EGENERAL       (APR_OS_START_ERROR + 14)
+/** @see APR_STATUS_IS_ENOSHMAVAIL */
+#define APR_ENOSHMAVAIL    (APR_OS_START_ERROR + 15)
+/** @see APR_STATUS_IS_EBADIP */
+#define APR_EBADIP         (APR_OS_START_ERROR + 16)
+/** @see APR_STATUS_IS_EBADMASK */
+#define APR_EBADMASK       (APR_OS_START_ERROR + 17)
+/* empty slot: +18 */
+/** @see APR_STATUS_IS_EDSOPEN */
+#define APR_EDSOOPEN       (APR_OS_START_ERROR + 19)
+/** @see APR_STATUS_IS_EABSOLUTE */
+#define APR_EABSOLUTE      (APR_OS_START_ERROR + 20)
+/** @see APR_STATUS_IS_ERELATIVE */
+#define APR_ERELATIVE      (APR_OS_START_ERROR + 21)
+/** @see APR_STATUS_IS_EINCOMPLETE */
+#define APR_EINCOMPLETE    (APR_OS_START_ERROR + 22)
+/** @see APR_STATUS_IS_EABOVEROOT */
+#define APR_EABOVEROOT     (APR_OS_START_ERROR + 23)
+/** @see APR_STATUS_IS_EBADPATH */
+#define APR_EBADPATH       (APR_OS_START_ERROR + 24)
+/** @see APR_STATUS_IS_EPATHWILD */
+#define APR_EPATHWILD      (APR_OS_START_ERROR + 25)
+/** @see APR_STATUS_IS_ESYMNOTFOUND */
+#define APR_ESYMNOTFOUND   (APR_OS_START_ERROR + 26)
+/** @see APR_STATUS_IS_EPROC_UNKNOWN */
+#define APR_EPROC_UNKNOWN  (APR_OS_START_ERROR + 27)
+/** @see APR_STATUS_IS_ENOTENOUGHENTROPY */
+#define APR_ENOTENOUGHENTROPY (APR_OS_START_ERROR + 28)
+/** @} */
+
+/** 
+ * @defgroup APR_STATUS_IS Status Value Tests
+ * @warning For any particular error condition, more than one of these tests
+ *      may match. This is because platform-specific error codes may not
+ *      always match the semantics of the POSIX codes these tests (and the
+ *      corresponding APR error codes) are named after. A notable example
+ *      are the APR_STATUS_IS_ENOENT and APR_STATUS_IS_ENOTDIR tests on
+ *      Win32 platforms. The programmer should always be aware of this and
+ *      adjust the order of the tests accordingly.
+ * @{
+ */
+/** 
+ * APR was unable to perform a stat on the file 
+ * @warning always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_ENOSTAT(s)        ((s) == APR_ENOSTAT)
+/** 
+ * APR was not provided a pool with which to allocate memory 
+ * @warning always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_ENOPOOL(s)        ((s) == APR_ENOPOOL)
+/** APR was given an invalid date  */
+#define APR_STATUS_IS_EBADDATE(s)       ((s) == APR_EBADDATE)
+/** APR was given an invalid socket */
+#define APR_STATUS_IS_EINVALSOCK(s)     ((s) == APR_EINVALSOCK)
+/** APR was not given a process structure */
+#define APR_STATUS_IS_ENOPROC(s)        ((s) == APR_ENOPROC)
+/** APR was not given a time structure */
+#define APR_STATUS_IS_ENOTIME(s)        ((s) == APR_ENOTIME)
+/** APR was not given a directory structure */
+#define APR_STATUS_IS_ENODIR(s)         ((s) == APR_ENODIR)
+/** APR was not given a lock structure */
+#define APR_STATUS_IS_ENOLOCK(s)        ((s) == APR_ENOLOCK)
+/** APR was not given a poll structure */
+#define APR_STATUS_IS_ENOPOLL(s)        ((s) == APR_ENOPOLL)
+/** APR was not given a socket */
+#define APR_STATUS_IS_ENOSOCKET(s)      ((s) == APR_ENOSOCKET)
+/** APR was not given a thread structure */
+#define APR_STATUS_IS_ENOTHREAD(s)      ((s) == APR_ENOTHREAD)
+/** APR was not given a thread key structure */
+#define APR_STATUS_IS_ENOTHDKEY(s)      ((s) == APR_ENOTHDKEY)
+/** Generic Error which can not be put into another spot */
+#define APR_STATUS_IS_EGENERAL(s)       ((s) == APR_EGENERAL)
+/** There is no more shared memory available */
+#define APR_STATUS_IS_ENOSHMAVAIL(s)    ((s) == APR_ENOSHMAVAIL)
+/** The specified IP address is invalid */
+#define APR_STATUS_IS_EBADIP(s)         ((s) == APR_EBADIP)
+/** The specified netmask is invalid */
+#define APR_STATUS_IS_EBADMASK(s)       ((s) == APR_EBADMASK)
+/* empty slot: +18 */
+/** 
+ * APR was unable to open the dso object.  
+ * For more information call apr_dso_error().
+ */
+#if defined(WIN32)
+#define APR_STATUS_IS_EDSOOPEN(s)       ((s) == APR_EDSOOPEN \
+                       || APR_TO_OS_ERROR(s) == ERROR_MOD_NOT_FOUND)
+#else
+#define APR_STATUS_IS_EDSOOPEN(s)       ((s) == APR_EDSOOPEN)
+#endif
+/** The given path was absolute. */
+#define APR_STATUS_IS_EABSOLUTE(s)      ((s) == APR_EABSOLUTE)
+/** The given path was relative. */
+#define APR_STATUS_IS_ERELATIVE(s)      ((s) == APR_ERELATIVE)
+/** The given path was neither relative nor absolute. */
+#define APR_STATUS_IS_EINCOMPLETE(s)    ((s) == APR_EINCOMPLETE)
+/** The given path was above the root path. */
+#define APR_STATUS_IS_EABOVEROOT(s)     ((s) == APR_EABOVEROOT)
+/** The given path was bad. */
+#define APR_STATUS_IS_EBADPATH(s)       ((s) == APR_EBADPATH)
+/** The given path contained wildcards. */
+#define APR_STATUS_IS_EPATHWILD(s)      ((s) == APR_EPATHWILD)
+/** Could not find the requested symbol.
+ * For more information call apr_dso_error().
+ */
+#if defined(WIN32)
+#define APR_STATUS_IS_ESYMNOTFOUND(s)   ((s) == APR_ESYMNOTFOUND \
+                       || APR_TO_OS_ERROR(s) == ERROR_PROC_NOT_FOUND)
+#else
+#define APR_STATUS_IS_ESYMNOTFOUND(s)   ((s) == APR_ESYMNOTFOUND)
+#endif
+/** The given process was not recognized by APR. */
+#define APR_STATUS_IS_EPROC_UNKNOWN(s)  ((s) == APR_EPROC_UNKNOWN)
+
+/** APR could not gather enough entropy to continue. */
+#define APR_STATUS_IS_ENOTENOUGHENTROPY(s) ((s) == APR_ENOTENOUGHENTROPY)
+
+/** @} */
+
+/** 
+ * @addtogroup APR_Error
+ * @{
+ */
+/** @see APR_STATUS_IS_INCHILD */
+#define APR_INCHILD        (APR_OS_START_STATUS + 1)
+/** @see APR_STATUS_IS_INPARENT */
+#define APR_INPARENT       (APR_OS_START_STATUS + 2)
+/** @see APR_STATUS_IS_DETACH */
+#define APR_DETACH         (APR_OS_START_STATUS + 3)
+/** @see APR_STATUS_IS_NOTDETACH */
+#define APR_NOTDETACH      (APR_OS_START_STATUS + 4)
+/** @see APR_STATUS_IS_CHILD_DONE */
+#define APR_CHILD_DONE     (APR_OS_START_STATUS + 5)
+/** @see APR_STATUS_IS_CHILD_NOTDONE */
+#define APR_CHILD_NOTDONE  (APR_OS_START_STATUS + 6)
+/** @see APR_STATUS_IS_TIMEUP */
+#define APR_TIMEUP         (APR_OS_START_STATUS + 7)
+/** @see APR_STATUS_IS_INCOMPLETE */
+#define APR_INCOMPLETE     (APR_OS_START_STATUS + 8)
+/* empty slot: +9 */
+/* empty slot: +10 */
+/* empty slot: +11 */
+/** @see APR_STATUS_IS_BADCH */
+#define APR_BADCH          (APR_OS_START_STATUS + 12)
+/** @see APR_STATUS_IS_BADARG */
+#define APR_BADARG         (APR_OS_START_STATUS + 13)
+/** @see APR_STATUS_IS_EOF */
+#define APR_EOF            (APR_OS_START_STATUS + 14)
+/** @see APR_STATUS_IS_NOTFOUND */
+#define APR_NOTFOUND       (APR_OS_START_STATUS + 15)
+/* empty slot: +16 */
+/* empty slot: +17 */
+/* empty slot: +18 */
+/** @see APR_STATUS_IS_ANONYMOUS */
+#define APR_ANONYMOUS      (APR_OS_START_STATUS + 19)
+/** @see APR_STATUS_IS_FILEBASED */
+#define APR_FILEBASED      (APR_OS_START_STATUS + 20)
+/** @see APR_STATUS_IS_KEYBASED */
+#define APR_KEYBASED       (APR_OS_START_STATUS + 21)
+/** @see APR_STATUS_IS_EINIT */
+#define APR_EINIT          (APR_OS_START_STATUS + 22)  
+/** @see APR_STATUS_IS_ENOTIMPL */
+#define APR_ENOTIMPL       (APR_OS_START_STATUS + 23)
+/** @see APR_STATUS_IS_EMISMATCH */
+#define APR_EMISMATCH      (APR_OS_START_STATUS + 24)
+/** @see APR_STATUS_IS_EBUSY */
+#define APR_EBUSY          (APR_OS_START_STATUS + 25)
+/** @} */
+
+/** 
+ * @addtogroup APR_STATUS_IS
+ * @{
+ */
+/** 
+ * Program is currently executing in the child 
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code */
+#define APR_STATUS_IS_INCHILD(s)        ((s) == APR_INCHILD)
+/** 
+ * Program is currently executing in the parent 
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_INPARENT(s)       ((s) == APR_INPARENT)
+/** 
+ * The thread is detached 
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_DETACH(s)         ((s) == APR_DETACH)
+/** 
+ * The thread is not detached 
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_NOTDETACH(s)      ((s) == APR_NOTDETACH)
+/** 
+ * The child has finished executing
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_CHILD_DONE(s)     ((s) == APR_CHILD_DONE)
+/** 
+ * The child has not finished executing
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_CHILD_NOTDONE(s)  ((s) == APR_CHILD_NOTDONE)
+/** 
+ * The operation did not finish before the timeout
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_TIMEUP(s)         ((s) == APR_TIMEUP)
+/** 
+ * The operation was incomplete although some processing was performed
+ * and the results are partially valid.
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_INCOMPLETE(s)     ((s) == APR_INCOMPLETE)
+/* empty slot: +9 */
+/* empty slot: +10 */
+/* empty slot: +11 */
+/** 
+ * Getopt found an option not in the option string
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_BADCH(s)          ((s) == APR_BADCH)
+/** 
+ * Getopt found an option not in the option string and an argument was 
+ * specified in the option string
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_BADARG(s)         ((s) == APR_BADARG)
+/** 
+ * APR has encountered the end of the file
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_EOF(s)            ((s) == APR_EOF)
+/** 
+ * APR was unable to find the socket in the poll structure
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_NOTFOUND(s)       ((s) == APR_NOTFOUND)
+/* empty slot: +16 */
+/* empty slot: +17 */
+/* empty slot: +18 */
+/** 
+ * APR is using anonymous shared memory
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_ANONYMOUS(s)      ((s) == APR_ANONYMOUS)
+/** 
+ * APR is using a file name as the key to the shared memory
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_FILEBASED(s)      ((s) == APR_FILEBASED)
+/** 
+ * APR is using a shared key as the key to the shared memory
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_KEYBASED(s)       ((s) == APR_KEYBASED)
+/** 
+ * Ininitalizer value.  If no option has been found, but 
+ * the status variable requires a value, this should be used
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_EINIT(s)          ((s) == APR_EINIT)
+/** 
+ * The APR function has not been implemented on this 
+ * platform, either because nobody has gotten to it yet, 
+ * or the function is impossible on this platform.
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_ENOTIMPL(s)       ((s) == APR_ENOTIMPL)
+/** 
+ * Two passwords do not match.
+ * @warning
+ * always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_EMISMATCH(s)      ((s) == APR_EMISMATCH)
+/** 
+ * The given lock was busy
+ * @warning always use this test, as platform-specific variances may meet this
+ * more than one error code 
+ */
+#define APR_STATUS_IS_EBUSY(s)          ((s) == APR_EBUSY)
+
+/** @} */
+
+/** 
+ * @addtogroup APR_Error APR Error Values
+ * @{
+ */
+/* APR CANONICAL ERROR VALUES */
+/** @see APR_STATUS_IS_EACCES */
+#ifdef EACCES
+#define APR_EACCES EACCES
+#else
+#define APR_EACCES         (APR_OS_START_CANONERR + 1)
+#endif
+
+/** @see APR_STATUS_IS_EXIST */
+#ifdef EEXIST
+#define APR_EEXIST EEXIST
+#else
+#define APR_EEXIST         (APR_OS_START_CANONERR + 2)
+#endif
+
+/** @see APR_STATUS_IS_ENAMETOOLONG */
+#ifdef ENAMETOOLONG
+#define APR_ENAMETOOLONG ENAMETOOLONG
+#else
+#define APR_ENAMETOOLONG   (APR_OS_START_CANONERR + 3)
+#endif
+
+/** @see APR_STATUS_IS_ENOENT */
+#ifdef ENOENT
+#define APR_ENOENT ENOENT
+#else
+#define APR_ENOENT         (APR_OS_START_CANONERR + 4)
+#endif
+
+/** @see APR_STATUS_IS_ENOTDIR */
+#ifdef ENOTDIR
+#define APR_ENOTDIR ENOTDIR
+#else
+#define APR_ENOTDIR        (APR_OS_START_CANONERR + 5)
+#endif
+
+/** @see APR_STATUS_IS_ENOSPC */
+#ifdef ENOSPC
+#define APR_ENOSPC ENOSPC
+#else
+#define APR_ENOSPC         (APR_OS_START_CANONERR + 6)
+#endif
+
+/** @see APR_STATUS_IS_ENOMEM */
+#ifdef ENOMEM
+#define APR_ENOMEM ENOMEM
+#else
+#define APR_ENOMEM         (APR_OS_START_CANONERR + 7)
+#endif
+
+/** @see APR_STATUS_IS_EMFILE */
+#ifdef EMFILE
+#define APR_EMFILE EMFILE
+#else
+#define APR_EMFILE         (APR_OS_START_CANONERR + 8)
+#endif
+
+/** @see APR_STATUS_IS_ENFILE */
+#ifdef ENFILE
+#define APR_ENFILE ENFILE
+#else
+#define APR_ENFILE         (APR_OS_START_CANONERR + 9)
+#endif
+
+/** @see APR_STATUS_IS_EBADF */
+#ifdef EBADF
+#define APR_EBADF EBADF
+#else
+#define APR_EBADF          (APR_OS_START_CANONERR + 10)
+#endif
+
+/** @see APR_STATUS_IS_EINVAL */
+#ifdef EINVAL
+#define APR_EINVAL EINVAL
+#else
+#define APR_EINVAL         (APR_OS_START_CANONERR + 11)
+#endif
+
+/** @see APR_STATUS_IS_ESPIPE */
+#ifdef ESPIPE
+#define APR_ESPIPE ESPIPE
+#else
+#define APR_ESPIPE         (APR_OS_START_CANONERR + 12)
+#endif
+
+/** 
+ * @see APR_STATUS_IS_EAGAIN 
+ * @warning use APR_STATUS_IS_EAGAIN instead of just testing this value
+ */
+#ifdef EAGAIN
+#define APR_EAGAIN EAGAIN
+#elif defined(EWOULDBLOCK)
+#define APR_EAGAIN EWOULDBLOCK
+#else
+#define APR_EAGAIN         (APR_OS_START_CANONERR + 13)
+#endif
+
+/** @see APR_STATUS_IS_EINTR */
+#ifdef EINTR
+#define APR_EINTR EINTR
+#else
+#define APR_EINTR          (APR_OS_START_CANONERR + 14)
+#endif
+
+/** @see APR_STATUS_IS_ENOTSOCK */
+#ifdef ENOTSOCK
+#define APR_ENOTSOCK ENOTSOCK
+#else
+#define APR_ENOTSOCK       (APR_OS_START_CANONERR + 15)
+#endif
+
+/** @see APR_STATUS_IS_ECONNREFUSED */
+#ifdef ECONNREFUSED
+#define APR_ECONNREFUSED ECONNREFUSED
+#else
+#define APR_ECONNREFUSED   (APR_OS_START_CANONERR + 16)
+#endif
+
+/** @see APR_STATUS_IS_EINPROGRESS */
+#ifdef EINPROGRESS
+#define APR_EINPROGRESS EINPROGRESS
+#else
+#define APR_EINPROGRESS    (APR_OS_START_CANONERR + 17)
+#endif
+
+/** 
+ * @see APR_STATUS_IS_ECONNABORTED
+ * @warning use APR_STATUS_IS_ECONNABORTED instead of just testing this value
+ */
+
+#ifdef ECONNABORTED
+#define APR_ECONNABORTED ECONNABORTED
+#else
+#define APR_ECONNABORTED   (APR_OS_START_CANONERR + 18)
+#endif
+
+/** @see APR_STATUS_IS_ECONNRESET */
+#ifdef ECONNRESET
+#define APR_ECONNRESET ECONNRESET
+#else
+#define APR_ECONNRESET     (APR_OS_START_CANONERR + 19)
+#endif
+
+/** @see APR_STATUS_IS_ETIMEDOUT 
+ *  @deprecated */
+#ifdef ETIMEDOUT
+#define APR_ETIMEDOUT ETIMEDOUT
+#else
+#define APR_ETIMEDOUT      (APR_OS_START_CANONERR + 20)
+#endif
+
+/** @see APR_STATUS_IS_EHOSTUNREACH */
+#ifdef EHOSTUNREACH
+#define APR_EHOSTUNREACH EHOSTUNREACH
+#else
+#define APR_EHOSTUNREACH   (APR_OS_START_CANONERR + 21)
+#endif
+
+/** @see APR_STATUS_IS_ENETUNREACH */
+#ifdef ENETUNREACH
+#define APR_ENETUNREACH ENETUNREACH
+#else
+#define APR_ENETUNREACH    (APR_OS_START_CANONERR + 22)
+#endif
+
+/** @see APR_STATUS_IS_EFTYPE */
+#ifdef EFTYPE
+#define APR_EFTYPE EFTYPE
+#else
+#define APR_EFTYPE        (APR_OS_START_CANONERR + 23)
+#endif
+
+/** @see APR_STATUS_IS_EPIPE */
+#ifdef EPIPE
+#define APR_EPIPE EPIPE
+#else
+#define APR_EPIPE         (APR_OS_START_CANONERR + 24)
+#endif
+
+/** @see APR_STATUS_IS_EXDEV */
+#ifdef EXDEV
+#define APR_EXDEV EXDEV
+#else
+#define APR_EXDEV         (APR_OS_START_CANONERR + 25)
+#endif
+
+/** @see APR_STATUS_IS_ENOTEMPTY */
+#ifdef ENOTEMPTY
+#define APR_ENOTEMPTY ENOTEMPTY
+#else
+#define APR_ENOTEMPTY     (APR_OS_START_CANONERR + 26)
+#endif
+
+/** @} */
+
+#if defined(OS2) && !defined(DOXYGEN)
+
+#define APR_FROM_OS_ERROR(e) (e == 0 ? APR_SUCCESS : e + APR_OS_START_SYSERR)
+#define APR_TO_OS_ERROR(e)   (e == 0 ? APR_SUCCESS : e - APR_OS_START_SYSERR)
+
+#define INCL_DOSERRORS
+#define INCL_DOS
+
+/* Leave these undefined.
+ * OS2 doesn't rely on the errno concept.
+ * The API calls always return a result codes which
+ * should be filtered through APR_FROM_OS_ERROR().
+ *
+ * #define apr_get_os_error()   (APR_FROM_OS_ERROR(GetLastError()))
+ * #define apr_set_os_error(e)  (SetLastError(APR_TO_OS_ERROR(e)))
+ */
+
+/* A special case, only socket calls require this;
+ */
+#define apr_get_netos_error()   (APR_FROM_OS_ERROR(errno))
+#define apr_set_netos_error(e)  (errno = APR_TO_OS_ERROR(e))
+
+/* And this needs to be greped away for good:
+ */
+#define APR_OS2_STATUS(e) (APR_FROM_OS_ERROR(e))
+
+/* These can't sit in a private header, so in spite of the extra size, 
+ * they need to be made available here.
+ */
+#define SOCBASEERR              10000
+#define SOCEPERM                (SOCBASEERR+1)             /* Not owner */
+#define SOCESRCH                (SOCBASEERR+3)             /* No such process */
+#define SOCEINTR                (SOCBASEERR+4)             /* Interrupted system call */
+#define SOCENXIO                (SOCBASEERR+6)             /* No such device or address */
+#define SOCEBADF                (SOCBASEERR+9)             /* Bad file number */
+#define SOCEACCES               (SOCBASEERR+13)            /* Permission denied */
+#define SOCEFAULT               (SOCBASEERR+14)            /* Bad address */
+#define SOCEINVAL               (SOCBASEERR+22)            /* Invalid argument */
+#define SOCEMFILE               (SOCBASEERR+24)            /* Too many open files */
+#define SOCEPIPE                (SOCBASEERR+32)            /* Broken pipe */
+#define SOCEOS2ERR              (SOCBASEERR+100)           /* OS/2 Error */
+#define SOCEWOULDBLOCK          (SOCBASEERR+35)            /* Operation would block */
+#define SOCEINPROGRESS          (SOCBASEERR+36)            /* Operation now in progress */
+#define SOCEALREADY             (SOCBASEERR+37)            /* Operation already in progress */
+#define SOCENOTSOCK             (SOCBASEERR+38)            /* Socket operation on non-socket */
+#define SOCEDESTADDRREQ         (SOCBASEERR+39)            /* Destination address required */
+#define SOCEMSGSIZE             (SOCBASEERR+40)            /* Message too long */
+#define SOCEPROTOTYPE           (SOCBASEERR+41)            /* Protocol wrong type for socket */
+#define SOCENOPROTOOPT          (SOCBASEERR+42)            /* Protocol not available */
+#define SOCEPROTONOSUPPORT      (SOCBASEERR+43)            /* Protocol not supported */
+#define SOCESOCKTNOSUPPORT      (SOCBASEERR+44)            /* Socket type not supported */
+#define SOCEOPNOTSUPP           (SOCBASEERR+45)            /* Operation not supported on socket */
+#define SOCEPFNOSUPPORT         (SOCBASEERR+46)            /* Protocol family not supported */
+#define SOCEAFNOSUPPORT         (SOCBASEERR+47)            /* Address family not supported by protocol family */
+#define SOCEADDRINUSE           (SOCBASEERR+48)            /* Address already in use */
+#define SOCEADDRNOTAVAIL        (SOCBASEERR+49)            /* Can't assign requested address */
+#define SOCENETDOWN             (SOCBASEERR+50)            /* Network is down */
+#define SOCENETUNREACH          (SOCBASEERR+51)            /* Network is unreachable */
+#define SOCENETRESET            (SOCBASEERR+52)            /* Network dropped connection on reset */
+#define SOCECONNABORTED         (SOCBASEERR+53)            /* Software caused connection abort */
+#define SOCECONNRESET           (SOCBASEERR+54)            /* Connection reset by peer */
+#define SOCENOBUFS              (SOCBASEERR+55)            /* No buffer space available */
+#define SOCEISCONN              (SOCBASEERR+56)            /* Socket is already connected */
+#define SOCENOTCONN             (SOCBASEERR+57)            /* Socket is not connected */
+#define SOCESHUTDOWN            (SOCBASEERR+58)            /* Can't send after socket shutdown */
+#define SOCETOOMANYREFS         (SOCBASEERR+59)            /* Too many references: can't splice */
+#define SOCETIMEDOUT            (SOCBASEERR+60)            /* Connection timed out */
+#define SOCECONNREFUSED         (SOCBASEERR+61)            /* Connection refused */
+#define SOCELOOP                (SOCBASEERR+62)            /* Too many levels of symbolic links */
+#define SOCENAMETOOLONG         (SOCBASEERR+63)            /* File name too long */
+#define SOCEHOSTDOWN            (SOCBASEERR+64)            /* Host is down */
+#define SOCEHOSTUNREACH         (SOCBASEERR+65)            /* No route to host */
+#define SOCENOTEMPTY            (SOCBASEERR+66)            /* Directory not empty */
+
+/* APR CANONICAL ERROR TESTS */
+#define APR_STATUS_IS_EACCES(s)         ((s) == APR_EACCES \
+                || (s) == APR_OS_START_SYSERR + ERROR_ACCESS_DENIED \
+                || (s) == APR_OS_START_SYSERR + ERROR_SHARING_VIOLATION)
+#define APR_STATUS_IS_EEXIST(s)         ((s) == APR_EEXIST \
+                || (s) == APR_OS_START_SYSERR + ERROR_OPEN_FAILED \
+                || (s) == APR_OS_START_SYSERR + ERROR_FILE_EXISTS \
+                || (s) == APR_OS_START_SYSERR + ERROR_ALREADY_EXISTS \
+                || (s) == APR_OS_START_SYSERR + ERROR_ACCESS_DENIED)
+#define APR_STATUS_IS_ENAMETOOLONG(s)   ((s) == APR_ENAMETOOLONG \
+                || (s) == APR_OS_START_SYSERR + ERROR_FILENAME_EXCED_RANGE \
+                || (s) == APR_OS_START_SYSERR + SOCENAMETOOLONG)
+#define APR_STATUS_IS_ENOENT(s)         ((s) == APR_ENOENT \
+                || (s) == APR_OS_START_SYSERR + ERROR_FILE_NOT_FOUND \
+                || (s) == APR_OS_START_SYSERR + ERROR_PATH_NOT_FOUND \
+                || (s) == APR_OS_START_SYSERR + ERROR_NO_MORE_FILES \
+                || (s) == APR_OS_START_SYSERR + ERROR_OPEN_FAILED)
+#define APR_STATUS_IS_ENOTDIR(s)        ((s) == APR_ENOTDIR)
+#define APR_STATUS_IS_ENOSPC(s)         ((s) == APR_ENOSPC \
+                || (s) == APR_OS_START_SYSERR + ERROR_DISK_FULL)
+#define APR_STATUS_IS_ENOMEM(s)         ((s) == APR_ENOMEM)
+#define APR_STATUS_IS_EMFILE(s)         ((s) == APR_EMFILE \
+                || (s) == APR_OS_START_SYSERR + ERROR_TOO_MANY_OPEN_FILES)
+#define APR_STATUS_IS_ENFILE(s)         ((s) == APR_ENFILE)
+#define APR_STATUS_IS_EBADF(s)          ((s) == APR_EBADF \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_HANDLE)
+#define APR_STATUS_IS_EINVAL(s)         ((s) == APR_EINVAL \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_PARAMETER \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_FUNCTION)
+#define APR_STATUS_IS_ESPIPE(s)         ((s) == APR_ESPIPE \
+                || (s) == APR_OS_START_SYSERR + ERROR_NEGATIVE_SEEK)
+#define APR_STATUS_IS_EAGAIN(s)         ((s) == APR_EAGAIN \
+                || (s) == APR_OS_START_SYSERR + ERROR_NO_DATA \
+                || (s) == APR_OS_START_SYSERR + SOCEWOULDBLOCK \
+                || (s) == APR_OS_START_SYSERR + ERROR_LOCK_VIOLATION)
+#define APR_STATUS_IS_EINTR(s)          ((s) == APR_EINTR \
+                || (s) == APR_OS_START_SYSERR + SOCEINTR)
+#define APR_STATUS_IS_ENOTSOCK(s)       ((s) == APR_ENOTSOCK \
+                || (s) == APR_OS_START_SYSERR + SOCENOTSOCK)
+#define APR_STATUS_IS_ECONNREFUSED(s)   ((s) == APR_ECONNREFUSED \
+                || (s) == APR_OS_START_SYSERR + SOCECONNREFUSED)
+#define APR_STATUS_IS_EINPROGRESS(s)    ((s) == APR_EINPROGRESS \
+                || (s) == APR_OS_START_SYSERR + SOCEINPROGRESS)
+#define APR_STATUS_IS_ECONNABORTED(s)   ((s) == APR_ECONNABORTED \
+                || (s) == APR_OS_START_SYSERR + SOCECONNABORTED)
+#define APR_STATUS_IS_ECONNRESET(s)     ((s) == APR_ECONNRESET \
+                || (s) == APR_OS_START_SYSERR + SOCECONNRESET)
+/* XXX deprecated */
+#define APR_STATUS_IS_ETIMEDOUT(s)         ((s) == APR_ETIMEDOUT \
+                || (s) == APR_OS_START_SYSERR + SOCETIMEDOUT)    
+#undef APR_STATUS_IS_TIMEUP
+#define APR_STATUS_IS_TIMEUP(s)         ((s) == APR_TIMEUP \
+                || (s) == APR_OS_START_SYSERR + SOCETIMEDOUT)    
+#define APR_STATUS_IS_EHOSTUNREACH(s)   ((s) == APR_EHOSTUNREACH \
+                || (s) == APR_OS_START_SYSERR + SOCEHOSTUNREACH)
+#define APR_STATUS_IS_ENETUNREACH(s)    ((s) == APR_ENETUNREACH \
+                || (s) == APR_OS_START_SYSERR + SOCENETUNREACH)
+#define APR_STATUS_IS_EFTYPE(s)         ((s) == APR_EFTYPE)
+#define APR_STATUS_IS_EPIPE(s)          ((s) == APR_EPIPE \
+                || (s) == APR_OS_START_SYSERR + ERROR_BROKEN_PIPE \
+                || (s) == APR_OS_START_SYSERR + SOCEPIPE)
+#define APR_STATUS_IS_EXDEV(s)          ((s) == APR_EXDEV \
+                || (s) == APR_OS_START_SYSERR + ERROR_NOT_SAME_DEVICE)
+#define APR_STATUS_IS_ENOTEMPTY(s)      ((s) == APR_ENOTEMPTY \
+                || (s) == APR_OS_START_SYSERR + ERROR_DIR_NOT_EMPTY \
+                || (s) == APR_OS_START_SYSERR + ERROR_ACCESS_DENIED)
+
+/*
+    Sorry, too tired to wrap this up for OS2... feel free to
+    fit the following into their best matches.
+
+    { ERROR_NO_SIGNAL_SENT,     ESRCH           },
+    { SOCEALREADY,              EALREADY        },
+    { SOCEDESTADDRREQ,          EDESTADDRREQ    },
+    { SOCEMSGSIZE,              EMSGSIZE        },
+    { SOCEPROTOTYPE,            EPROTOTYPE      },
+    { SOCENOPROTOOPT,           ENOPROTOOPT     },
+    { SOCEPROTONOSUPPORT,       EPROTONOSUPPORT },
+    { SOCESOCKTNOSUPPORT,       ESOCKTNOSUPPORT },
+    { SOCEOPNOTSUPP,            EOPNOTSUPP      },
+    { SOCEPFNOSUPPORT,          EPFNOSUPPORT    },
+    { SOCEAFNOSUPPORT,          EAFNOSUPPORT    },
+    { SOCEADDRINUSE,            EADDRINUSE      },
+    { SOCEADDRNOTAVAIL,         EADDRNOTAVAIL   },
+    { SOCENETDOWN,              ENETDOWN        },
+    { SOCENETRESET,             ENETRESET       },
+    { SOCENOBUFS,               ENOBUFS         },
+    { SOCEISCONN,               EISCONN         },
+    { SOCENOTCONN,              ENOTCONN        },
+    { SOCESHUTDOWN,             ESHUTDOWN       },
+    { SOCETOOMANYREFS,          ETOOMANYREFS    },
+    { SOCELOOP,                 ELOOP           },
+    { SOCEHOSTDOWN,             EHOSTDOWN       },
+    { SOCENOTEMPTY,             ENOTEMPTY       },
+    { SOCEPIPE,                 EPIPE           }
+*/
+
+#elif defined(WIN32) && !defined(DOXYGEN) /* !defined(OS2) */
+
+#define APR_FROM_OS_ERROR(e) (e == 0 ? APR_SUCCESS : e + APR_OS_START_SYSERR)
+#define APR_TO_OS_ERROR(e)   (e == 0 ? APR_SUCCESS : e - APR_OS_START_SYSERR)
+
+#define apr_get_os_error()   (APR_FROM_OS_ERROR(GetLastError()))
+#define apr_set_os_error(e)  (SetLastError(APR_TO_OS_ERROR(e)))
+
+/* A special case, only socket calls require this:
+ */
+#define apr_get_netos_error()   (APR_FROM_OS_ERROR(WSAGetLastError()))
+#define apr_set_netos_error(e)   (WSASetLastError(APR_TO_OS_ERROR(e)))
+
+/* APR CANONICAL ERROR TESTS */
+#define APR_STATUS_IS_EACCES(s)         ((s) == APR_EACCES \
+                || (s) == APR_OS_START_SYSERR + ERROR_ACCESS_DENIED \
+                || (s) == APR_OS_START_SYSERR + ERROR_CANNOT_MAKE \
+                || (s) == APR_OS_START_SYSERR + ERROR_CURRENT_DIRECTORY \
+                || (s) == APR_OS_START_SYSERR + ERROR_DRIVE_LOCKED \
+                || (s) == APR_OS_START_SYSERR + ERROR_FAIL_I24 \
+                || (s) == APR_OS_START_SYSERR + ERROR_LOCK_VIOLATION \
+                || (s) == APR_OS_START_SYSERR + ERROR_LOCK_FAILED \
+                || (s) == APR_OS_START_SYSERR + ERROR_NOT_LOCKED \
+                || (s) == APR_OS_START_SYSERR + ERROR_NETWORK_ACCESS_DENIED \
+                || (s) == APR_OS_START_SYSERR + ERROR_SHARING_VIOLATION)
+#define APR_STATUS_IS_EEXIST(s)         ((s) == APR_EEXIST \
+                || (s) == APR_OS_START_SYSERR + ERROR_FILE_EXISTS \
+                || (s) == APR_OS_START_SYSERR + ERROR_ALREADY_EXISTS)
+#define APR_STATUS_IS_ENAMETOOLONG(s)   ((s) == APR_ENAMETOOLONG \
+                || (s) == APR_OS_START_SYSERR + ERROR_FILENAME_EXCED_RANGE \
+                || (s) == APR_OS_START_SYSERR + WSAENAMETOOLONG)
+#define APR_STATUS_IS_ENOENT(s)         ((s) == APR_ENOENT \
+                || (s) == APR_OS_START_SYSERR + ERROR_FILE_NOT_FOUND \
+                || (s) == APR_OS_START_SYSERR + ERROR_PATH_NOT_FOUND \
+                || (s) == APR_OS_START_SYSERR + ERROR_OPEN_FAILED \
+                || (s) == APR_OS_START_SYSERR + ERROR_NO_MORE_FILES)
+#define APR_STATUS_IS_ENOTDIR(s)        ((s) == APR_ENOTDIR \
+                || (s) == APR_OS_START_SYSERR + ERROR_PATH_NOT_FOUND \
+                || (s) == APR_OS_START_SYSERR + ERROR_BAD_NETPATH \
+                || (s) == APR_OS_START_SYSERR + ERROR_BAD_NET_NAME \
+                || (s) == APR_OS_START_SYSERR + ERROR_BAD_PATHNAME \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_DRIVE)
+#define APR_STATUS_IS_ENOSPC(s)         ((s) == APR_ENOSPC \
+                || (s) == APR_OS_START_SYSERR + ERROR_DISK_FULL)
+#define APR_STATUS_IS_ENOMEM(s)         ((s) == APR_ENOMEM \
+                || (s) == APR_OS_START_SYSERR + ERROR_ARENA_TRASHED \
+                || (s) == APR_OS_START_SYSERR + ERROR_NOT_ENOUGH_MEMORY \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_BLOCK \
+                || (s) == APR_OS_START_SYSERR + ERROR_NOT_ENOUGH_QUOTA \
+                || (s) == APR_OS_START_SYSERR + ERROR_OUTOFMEMORY)
+#define APR_STATUS_IS_EMFILE(s)         ((s) == APR_EMFILE \
+                || (s) == APR_OS_START_SYSERR + ERROR_TOO_MANY_OPEN_FILES)
+#define APR_STATUS_IS_ENFILE(s)         ((s) == APR_ENFILE)
+#define APR_STATUS_IS_EBADF(s)          ((s) == APR_EBADF \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_HANDLE \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_TARGET_HANDLE)
+#define APR_STATUS_IS_EINVAL(s)         ((s) == APR_EINVAL \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_ACCESS \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_DATA \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_FUNCTION \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_HANDLE \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_PARAMETER \
+                || (s) == APR_OS_START_SYSERR + ERROR_NEGATIVE_SEEK)
+#define APR_STATUS_IS_ESPIPE(s)         ((s) == APR_ESPIPE \
+                || (s) == APR_OS_START_SYSERR + ERROR_SEEK_ON_DEVICE \
+                || (s) == APR_OS_START_SYSERR + ERROR_NEGATIVE_SEEK)
+#define APR_STATUS_IS_EAGAIN(s)         ((s) == APR_EAGAIN \
+                || (s) == APR_OS_START_SYSERR + ERROR_NO_DATA \
+                || (s) == APR_OS_START_SYSERR + ERROR_NO_PROC_SLOTS \
+                || (s) == APR_OS_START_SYSERR + ERROR_NESTING_NOT_ALLOWED \
+                || (s) == APR_OS_START_SYSERR + ERROR_MAX_THRDS_REACHED \
+                || (s) == APR_OS_START_SYSERR + ERROR_LOCK_VIOLATION \
+                || (s) == APR_OS_START_SYSERR + WSAEWOULDBLOCK)
+#define APR_STATUS_IS_EINTR(s)          ((s) == APR_EINTR \
+                || (s) == APR_OS_START_SYSERR + WSAEINTR)
+#define APR_STATUS_IS_ENOTSOCK(s)       ((s) == APR_ENOTSOCK \
+                || (s) == APR_OS_START_SYSERR + WSAENOTSOCK)
+#define APR_STATUS_IS_ECONNREFUSED(s)   ((s) == APR_ECONNREFUSED \
+                || (s) == APR_OS_START_SYSERR + WSAECONNREFUSED)
+#define APR_STATUS_IS_EINPROGRESS(s)    ((s) == APR_EINPROGRESS \
+                || (s) == APR_OS_START_SYSERR + WSAEINPROGRESS)
+#define APR_STATUS_IS_ECONNABORTED(s)   ((s) == APR_ECONNABORTED \
+                || (s) == APR_OS_START_SYSERR + WSAECONNABORTED)
+#define APR_STATUS_IS_ECONNRESET(s)     ((s) == APR_ECONNRESET \
+                || (s) == APR_OS_START_SYSERR + ERROR_NETNAME_DELETED \
+                || (s) == APR_OS_START_SYSERR + WSAECONNRESET)
+/* XXX deprecated */
+#define APR_STATUS_IS_ETIMEDOUT(s)         ((s) == APR_ETIMEDOUT \
+                || (s) == APR_OS_START_SYSERR + WSAETIMEDOUT \
+                || (s) == APR_OS_START_SYSERR + WAIT_TIMEOUT)
+#undef APR_STATUS_IS_TIMEUP
+#define APR_STATUS_IS_TIMEUP(s)         ((s) == APR_TIMEUP \
+                || (s) == APR_OS_START_SYSERR + WSAETIMEDOUT \
+                || (s) == APR_OS_START_SYSERR + WAIT_TIMEOUT)
+#define APR_STATUS_IS_EHOSTUNREACH(s)   ((s) == APR_EHOSTUNREACH \
+                || (s) == APR_OS_START_SYSERR + WSAEHOSTUNREACH)
+#define APR_STATUS_IS_ENETUNREACH(s)    ((s) == APR_ENETUNREACH \
+                || (s) == APR_OS_START_SYSERR + WSAENETUNREACH)
+#define APR_STATUS_IS_EFTYPE(s)         ((s) == APR_EFTYPE \
+                || (s) == APR_OS_START_SYSERR + ERROR_EXE_MACHINE_TYPE_MISMATCH \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_DLL \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_MODULETYPE \
+                || (s) == APR_OS_START_SYSERR + ERROR_BAD_EXE_FORMAT \
+                || (s) == APR_OS_START_SYSERR + ERROR_INVALID_EXE_SIGNATURE \
+                || (s) == APR_OS_START_SYSERR + ERROR_FILE_CORRUPT \
+                || (s) == APR_OS_START_SYSERR + ERROR_BAD_FORMAT)
+#define APR_STATUS_IS_EPIPE(s)          ((s) == APR_EPIPE \
+                || (s) == APR_OS_START_SYSERR + ERROR_BROKEN_PIPE)
+#define APR_STATUS_IS_EXDEV(s)          ((s) == APR_EXDEV \
+                || (s) == APR_OS_START_SYSERR + ERROR_NOT_SAME_DEVICE)
+#define APR_STATUS_IS_ENOTEMPTY(s)      ((s) == APR_ENOTEMPTY \
+                || (s) == APR_OS_START_SYSERR + ERROR_DIR_NOT_EMPTY)
+
+#elif defined(NETWARE) && defined(USE_WINSOCK) && !defined(DOXYGEN) /* !defined(OS2) && !defined(WIN32) */
+
+#define APR_FROM_OS_ERROR(e) (e == 0 ? APR_SUCCESS : e + APR_OS_START_SYSERR)
+#define APR_TO_OS_ERROR(e)   (e == 0 ? APR_SUCCESS : e - APR_OS_START_SYSERR)
+
+#define apr_get_os_error()    (errno)
+#define apr_set_os_error(e)   (errno = (e))
+
+/* A special case, only socket calls require this: */
+#define apr_get_netos_error()   (APR_FROM_OS_ERROR(WSAGetLastError()))
+#define apr_set_netos_error(e)  (WSASetLastError(APR_TO_OS_ERROR(e)))
+
+/* APR CANONICAL ERROR TESTS */
+#define APR_STATUS_IS_EACCES(s)         ((s) == APR_EACCES)
+#define APR_STATUS_IS_EEXIST(s)         ((s) == APR_EEXIST)
+#define APR_STATUS_IS_ENAMETOOLONG(s)   ((s) == APR_ENAMETOOLONG)
+#define APR_STATUS_IS_ENOENT(s)         ((s) == APR_ENOENT)
+#define APR_STATUS_IS_ENOTDIR(s)        ((s) == APR_ENOTDIR)
+#define APR_STATUS_IS_ENOSPC(s)         ((s) == APR_ENOSPC)
+#define APR_STATUS_IS_ENOMEM(s)         ((s) == APR_ENOMEM)
+#define APR_STATUS_IS_EMFILE(s)         ((s) == APR_EMFILE)
+#define APR_STATUS_IS_ENFILE(s)         ((s) == APR_ENFILE)
+#define APR_STATUS_IS_EBADF(s)          ((s) == APR_EBADF)
+#define APR_STATUS_IS_EINVAL(s)         ((s) == APR_EINVAL)
+#define APR_STATUS_IS_ESPIPE(s)         ((s) == APR_ESPIPE)
+
+#define APR_STATUS_IS_EAGAIN(s)         ((s) == APR_EAGAIN \
+                || (s) ==                       EWOULDBLOCK \
+                || (s) == APR_OS_START_SYSERR + WSAEWOULDBLOCK)
+#define APR_STATUS_IS_EINTR(s)          ((s) == APR_EINTR \
+                || (s) == APR_OS_START_SYSERR + WSAEINTR)
+#define APR_STATUS_IS_ENOTSOCK(s)       ((s) == APR_ENOTSOCK \
+                || (s) == APR_OS_START_SYSERR + WSAENOTSOCK)
+#define APR_STATUS_IS_ECONNREFUSED(s)   ((s) == APR_ECONNREFUSED \
+                || (s) == APR_OS_START_SYSERR + WSAECONNREFUSED)
+#define APR_STATUS_IS_EINPROGRESS(s)    ((s) == APR_EINPROGRESS \
+                || (s) == APR_OS_START_SYSERR + WSAEINPROGRESS)
+#define APR_STATUS_IS_ECONNABORTED(s)   ((s) == APR_ECONNABORTED \
+                || (s) == APR_OS_START_SYSERR + WSAECONNABORTED)
+#define APR_STATUS_IS_ECONNRESET(s)     ((s) == APR_ECONNRESET \
+                || (s) == APR_OS_START_SYSERR + WSAECONNRESET)
+/* XXX deprecated */
+#define APR_STATUS_IS_ETIMEDOUT(s)       ((s) == APR_ETIMEDOUT \
+                || (s) == APR_OS_START_SYSERR + WSAETIMEDOUT \
+                || (s) == APR_OS_START_SYSERR + WAIT_TIMEOUT)
+#undef APR_STATUS_IS_TIMEUP
+#define APR_STATUS_IS_TIMEUP(s)         ((s) == APR_TIMEUP \
+                || (s) == APR_OS_START_SYSERR + WSAETIMEDOUT \
+                || (s) == APR_OS_START_SYSERR + WAIT_TIMEOUT)
+#define APR_STATUS_IS_EHOSTUNREACH(s)   ((s) == APR_EHOSTUNREACH \
+                || (s) == APR_OS_START_SYSERR + WSAEHOSTUNREACH)
+#define APR_STATUS_IS_ENETUNREACH(s)    ((s) == APR_ENETUNREACH \
+                || (s) == APR_OS_START_SYSERR + WSAENETUNREACH)
+#define APR_STATUS_IS_ENETDOWN(s)       ((s) == APR_OS_START_SYSERR + WSAENETDOWN)
+#define APR_STATUS_IS_EFTYPE(s)         ((s) == APR_EFTYPE)
+#define APR_STATUS_IS_EPIPE(s)          ((s) == APR_EPIPE)
+#define APR_STATUS_IS_EXDEV(s)          ((s) == APR_EXDEV)
+#define APR_STATUS_IS_ENOTEMPTY(s)      ((s) == APR_ENOTEMPTY)
+
+#else /* !defined(NETWARE) && !defined(OS2) && !defined(WIN32) */
+
+/*
+ *  os error codes are clib error codes
+ */
+#define APR_FROM_OS_ERROR(e)  (e)
+#define APR_TO_OS_ERROR(e)    (e)
+
+#define apr_get_os_error()    (errno)
+#define apr_set_os_error(e)   (errno = (e))
+
+/* A special case, only socket calls require this:
+ */
+#define apr_get_netos_error() (errno)
+#define apr_set_netos_error(e) (errno = (e))
+
+/** 
+ * @addtogroup APR_STATUS_IS
+ * @{
+ */
+
+/** permission denied */
+#define APR_STATUS_IS_EACCES(s)         ((s) == APR_EACCES)
+/** file exists */
+#define APR_STATUS_IS_EEXIST(s)         ((s) == APR_EEXIST)
+/** path name is too long */
+#define APR_STATUS_IS_ENAMETOOLONG(s)   ((s) == APR_ENAMETOOLONG)
+/**
+ * no such file or directory
+ * @remark
+ * EMVSCATLG can be returned by the automounter on z/OS for
+ * paths which do not exist.
+ */
+#ifdef EMVSCATLG
+#define APR_STATUS_IS_ENOENT(s)         ((s) == APR_ENOENT \
+                                      || (s) == EMVSCATLG)
+#else
+#define APR_STATUS_IS_ENOENT(s)         ((s) == APR_ENOENT)
+#endif
+/** not a directory */
+#define APR_STATUS_IS_ENOTDIR(s)        ((s) == APR_ENOTDIR)
+/** no space left on device */
+#ifdef EDQUOT
+#define APR_STATUS_IS_ENOSPC(s)         ((s) == APR_ENOSPC \
+                                      || (s) == EDQUOT)
+#else
+#define APR_STATUS_IS_ENOSPC(s)         ((s) == APR_ENOSPC)
+#endif
+/** not enough memory */
+#define APR_STATUS_IS_ENOMEM(s)         ((s) == APR_ENOMEM)
+/** too many open files */
+#define APR_STATUS_IS_EMFILE(s)         ((s) == APR_EMFILE)
+/** file table overflow */
+#define APR_STATUS_IS_ENFILE(s)         ((s) == APR_ENFILE)
+/** bad file # */
+#define APR_STATUS_IS_EBADF(s)          ((s) == APR_EBADF)
+/** invalid argument */
+#define APR_STATUS_IS_EINVAL(s)         ((s) == APR_EINVAL)
+/** illegal seek */
+#define APR_STATUS_IS_ESPIPE(s)         ((s) == APR_ESPIPE)
+
+/** operation would block */
+#if !defined(EWOULDBLOCK) || !defined(EAGAIN)
+#define APR_STATUS_IS_EAGAIN(s)         ((s) == APR_EAGAIN)
+#elif (EWOULDBLOCK == EAGAIN)
+#define APR_STATUS_IS_EAGAIN(s)         ((s) == APR_EAGAIN)
+#else
+#define APR_STATUS_IS_EAGAIN(s)         ((s) == APR_EAGAIN \
+                                      || (s) == EWOULDBLOCK)
+#endif
+
+/** interrupted system call */
+#define APR_STATUS_IS_EINTR(s)          ((s) == APR_EINTR)
+/** socket operation on a non-socket */
+#define APR_STATUS_IS_ENOTSOCK(s)       ((s) == APR_ENOTSOCK)
+/** Connection Refused */
+#define APR_STATUS_IS_ECONNREFUSED(s)   ((s) == APR_ECONNREFUSED)
+/** operation now in progress */
+#define APR_STATUS_IS_EINPROGRESS(s)    ((s) == APR_EINPROGRESS)
+
+/** 
+ * Software caused connection abort 
+ * @remark
+ * EPROTO on certain older kernels really means ECONNABORTED, so we need to 
+ * ignore it for them.  See discussion in new-httpd archives nh.9701 & nh.9603
+ *
+ * There is potentially a bug in Solaris 2.x x<6, and other boxes that 
+ * implement tcp sockets in userland (i.e. on top of STREAMS).  On these
+ * systems, EPROTO can actually result in a fatal loop.  See PR#981 for 
+ * example.  It's hard to handle both uses of EPROTO.
+ */
+#ifdef EPROTO
+#define APR_STATUS_IS_ECONNABORTED(s)    ((s) == APR_ECONNABORTED \
+                                       || (s) == EPROTO)
+#else
+#define APR_STATUS_IS_ECONNABORTED(s)    ((s) == APR_ECONNABORTED)
+#endif
+
+/** Connection Reset by peer */
+#define APR_STATUS_IS_ECONNRESET(s)      ((s) == APR_ECONNRESET)
+/** Operation timed out
+ *  @deprecated */
+#define APR_STATUS_IS_ETIMEDOUT(s)      ((s) == APR_ETIMEDOUT)
+/** no route to host */
+#define APR_STATUS_IS_EHOSTUNREACH(s)    ((s) == APR_EHOSTUNREACH)
+/** network is unreachable */
+#define APR_STATUS_IS_ENETUNREACH(s)     ((s) == APR_ENETUNREACH)
+/** inappropiate file type or format */
+#define APR_STATUS_IS_EFTYPE(s)          ((s) == APR_EFTYPE)
+/** broken pipe */
+#define APR_STATUS_IS_EPIPE(s)           ((s) == APR_EPIPE)
+/** cross device link */
+#define APR_STATUS_IS_EXDEV(s)           ((s) == APR_EXDEV)
+/** Directory Not Empty */
+#define APR_STATUS_IS_ENOTEMPTY(s)       ((s) == APR_ENOTEMPTY || \
+                                          (s) == APR_EEXIST)
+/** @} */
+
+#endif /* !defined(NETWARE) && !defined(OS2) && !defined(WIN32) */
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* ! APR_ERRNO_H */
+#ifndef _LINUX_ERRNO_H
+#define _LINUX_ERRNO_H
+
+#include <asm/errno.h>
+
+#ifdef __KERNEL__
+
+/* Should never be seen by user programs */
+#define ERESTARTSYS	512
+#define ERESTARTNOINTR	513
+#define ERESTARTNOHAND	514	/* restart if no handler.. */
+#define ENOIOCTLCMD	515	/* No ioctl command */
+#define ERESTART_RESTARTBLOCK 516 /* restart by calling sys_restart_syscall */
+
+/* Defined for the NFSv3 protocol */
+#define EBADHANDLE	521	/* Illegal NFS file handle */
+#define ENOTSYNC	522	/* Update synchronization mismatch */
+#define EBADCOOKIE	523	/* Cookie is stale */
+#define ENOTSUPP	524	/* Operation is not supported */
+#define ETOOSMALL	525	/* Buffer or request is too small */
+#define ESERVERFAULT	526	/* An untranslatable error occurred */
+#define EBADTYPE	527	/* Type not supported by server */
+#define EJUKEBOX	528	/* Request initiated, but will not complete before timeout */
+#define EIOCBQUEUED	529	/* iocb queued, will get completion event */
+#define EIOCBRETRY	530	/* iocb queued, will trigger a retry */
+
+#endif
+
+#endif
+// Copyright (c) 1994 James Clark
+// See the file COPYING for copying permission.
+
+#ifndef ErrnoMessageArg_INCLUDED
+#define ErrnoMessageArg_INCLUDED 1
+
+#include "MessageArg.h"
+#include "rtti.h"
+
+#ifdef SP_NAMESPACE
+namespace SP_NAMESPACE {
+#endif
+
+class SP_API ErrnoMessageArg : public OtherMessageArg {
+  RTTI_CLASS
+public:
+  ErrnoMessageArg(int errnum) : errno_(errnum) { }
+  MessageArg *copy() const;
+  // errno might be a macro so we must use a different name
+  int errnum() const;
+private:
+  int errno_;
+};
+
+inline
+int ErrnoMessageArg::errnum() const
+{
+  return errno_;
+}
+
+#ifdef SP_NAMESPACE
+}
+#endif
+
+#endif /* not ErrnoMessageArg_INCLUDED */
+/* Copyright (C) 1991,92,93,94,95,96,97,2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/*
+ *	ISO C99 Standard: 7.5 Errors	<errno.h>
+ */
+
+#ifndef	_ERRNO_H
+
+/* The includer defined __need_Emath if he wants only the definitions
+   of EDOM and ERANGE, and not everything else.  */
+#ifndef	__need_Emath
+# define _ERRNO_H	1
+# include <features.h>
+#endif
+
+__BEGIN_DECLS
+
+/* Get the error number constants from the system-specific file.
+   This file will test __need_Emath and _ERRNO_H.  */
+#include <bits/errno.h>
+#undef	__need_Emath
+
+#ifdef	_ERRNO_H
+
+/* Declare the `errno' variable, unless it's defined as a macro by
+   bits/errno.h.  This is the case in GNU, where it is a per-thread
+   variable.  This redeclaration using the macro still works, but it
+   will be a function declaration without a prototype and may trigger
+   a -Wstrict-prototypes warning.  */
+#ifndef	errno
+extern int errno;
+#endif
+
+#ifdef __USE_GNU
+
+/* The full and simple forms of the name with which the program was
+   invoked.  These variables are set up automatically at startup based on
+   the value of ARGV[0] (this works only if you use GNU ld).  */
+extern char *program_invocation_name, *program_invocation_short_name;
+#endif /* __USE_GNU */
+#endif /* _ERRNO_H */
+
+__END_DECLS
+
+#endif /* _ERRNO_H */
+
+/* The Hurd <bits/errno.h> defines `error_t' as an enumerated type so
+   that printing `error_t' values in the debugger shows the names.  We
+   might need this definition sometimes even if this file was included
+   before.  */
+#if defined __USE_GNU || defined __need_error_t
+# ifndef __error_t_defined
+typedef int error_t;
+#  define __error_t_defined	1
+# endif
+# undef __need_error_t
+#endif
+#ifndef _I386_ERRNO_H
+#define _I386_ERRNO_H
+
+#include <asm-generic/errno.h>
+
+#endif
+#ifndef _ASM_GENERIC_ERRNO_BASE_H
+#define _ASM_GENERIC_ERRNO_BASE_H
+
+#define	EPERM		 1	/* Operation not permitted */
+#define	ENOENT		 2	/* No such file or directory */
+#define	ESRCH		 3	/* No such process */
+#define	EINTR		 4	/* Interrupted system call */
+#define	EIO		 5	/* I/O error */
+#define	ENXIO		 6	/* No such device or address */
+#define	E2BIG		 7	/* Argument list too long */
+#define	ENOEXEC		 8	/* Exec format error */
+#define	EBADF		 9	/* Bad file number */
+#define	ECHILD		10	/* No child processes */
+#define	EAGAIN		11	/* Try again */
+#define	ENOMEM		12	/* Out of memory */
+#define	EACCES		13	/* Permission denied */
+#define	EFAULT		14	/* Bad address */
+#define	ENOTBLK		15	/* Block device required */
+#define	EBUSY		16	/* Device or resource busy */
+#define	EEXIST		17	/* File exists */
+#define	EXDEV		18	/* Cross-device link */
+#define	ENODEV		19	/* No such device */
+#define	ENOTDIR		20	/* Not a directory */
+#define	EISDIR		21	/* Is a directory */
+#define	EINVAL		22	/* Invalid argument */
+#define	ENFILE		23	/* File table overflow */
+#define	EMFILE		24	/* Too many open files */
+#define	ENOTTY		25	/* Not a typewriter */
+#define	ETXTBSY		26	/* Text file busy */
+#define	EFBIG		27	/* File too large */
+#define	ENOSPC		28	/* No space left on device */
+#define	ESPIPE		29	/* Illegal seek */
+#define	EROFS		30	/* Read-only file system */
+#define	EMLINK		31	/* Too many links */
+#define	EPIPE		32	/* Broken pipe */
+#define	EDOM		33	/* Math argument out of domain of func */
+#define	ERANGE		34	/* Math result not representable */
+
+#endif
+#ifndef _ASM_GENERIC_ERRNO_H
+#define _ASM_GENERIC_ERRNO_H
+
+#include <asm-generic/errno-base.h>
+
+#define	EDEADLK		35	/* Resource deadlock would occur */
+#define	ENAMETOOLONG	36	/* File name too long */
+#define	ENOLCK		37	/* No record locks available */
+#define	ENOSYS		38	/* Function not implemented */
+#define	ENOTEMPTY	39	/* Directory not empty */
+#define	ELOOP		40	/* Too many symbolic links encountered */
+#define	EWOULDBLOCK	EAGAIN	/* Operation would block */
+#define	ENOMSG		42	/* No message of desired type */
+#define	EIDRM		43	/* Identifier removed */
+#define	ECHRNG		44	/* Channel number out of range */
+#define	EL2NSYNC	45	/* Level 2 not synchronized */
+#define	EL3HLT		46	/* Level 3 halted */
+#define	EL3RST		47	/* Level 3 reset */
+#define	ELNRNG		48	/* Link number out of range */
+#define	EUNATCH		49	/* Protocol driver not attached */
+#define	ENOCSI		50	/* No CSI structure available */
+#define	EL2HLT		51	/* Level 2 halted */
+#define	EBADE		52	/* Invalid exchange */
+#define	EBADR		53	/* Invalid request descriptor */
+#define	EXFULL		54	/* Exchange full */
+#define	ENOANO		55	/* No anode */
+#define	EBADRQC		56	/* Invalid request code */
+#define	EBADSLT		57	/* Invalid slot */
+
+#define	EDEADLOCK	EDEADLK
+
+#define	EBFONT		59	/* Bad font file format */
+#define	ENOSTR		60	/* Device not a stream */
+#define	ENODATA		61	/* No data available */
+#define	ETIME		62	/* Timer expired */
+#define	ENOSR		63	/* Out of streams resources */
+#define	ENONET		64	/* Machine is not on the network */
+#define	ENOPKG		65	/* Package not installed */
+#define	EREMOTE		66	/* Object is remote */
+#define	ENOLINK		67	/* Link has been severed */
+#define	EADV		68	/* Advertise error */
+#define	ESRMNT		69	/* Srmount error */
+#define	ECOMM		70	/* Communication error on send */
+#define	EPROTO		71	/* Protocol error */
+#define	EMULTIHOP	72	/* Multihop attempted */
+#define	EDOTDOT		73	/* RFS specific error */
+#define	EBADMSG		74	/* Not a data message */
+#define	EOVERFLOW	75	/* Value too large for defined data type */
+#define	ENOTUNIQ	76	/* Name not unique on network */
+#define	EBADFD		77	/* File descriptor in bad state */
+#define	EREMCHG		78	/* Remote address changed */
+#define	ELIBACC		79	/* Can not access a needed shared library */
+#define	ELIBBAD		80	/* Accessing a corrupted shared library */
+#define	ELIBSCN		81	/* .lib section in a.out corrupted */
+#define	ELIBMAX		82	/* Attempting to link in too many shared libraries */
+#define	ELIBEXEC	83	/* Cannot exec a shared library directly */
+#define	EILSEQ		84	/* Illegal byte sequence */
+#define	ERESTART	85	/* Interrupted system call should be restarted */
+#define	ESTRPIPE	86	/* Streams pipe error */
+#define	EUSERS		87	/* Too many users */
+#define	ENOTSOCK	88	/* Socket operation on non-socket */
+#define	EDESTADDRREQ	89	/* Destination address required */
+#define	EMSGSIZE	90	/* Message too long */
+#define	EPROTOTYPE	91	/* Protocol wrong type for socket */
+#define	ENOPROTOOPT	92	/* Protocol not available */
+#define	EPROTONOSUPPORT	93	/* Protocol not supported */
+#define	ESOCKTNOSUPPORT	94	/* Socket type not supported */
+#define	EOPNOTSUPP	95	/* Operation not supported on transport endpoint */
+#define	EPFNOSUPPORT	96	/* Protocol family not supported */
+#define	EAFNOSUPPORT	97	/* Address family not supported by protocol */
+#define	EADDRINUSE	98	/* Address already in use */
+#define	EADDRNOTAVAIL	99	/* Cannot assign requested address */
+#define	ENETDOWN	100	/* Network is down */
+#define	ENETUNREACH	101	/* Network is unreachable */
+#define	ENETRESET	102	/* Network dropped connection because of reset */
+#define	ECONNABORTED	103	/* Software caused connection abort */
+#define	ECONNRESET	104	/* Connection reset by peer */
+#define	ENOBUFS		105	/* No buffer space available */
+#define	EISCONN		106	/* Transport endpoint is already connected */
+#define	ENOTCONN	107	/* Transport endpoint is not connected */
+#define	ESHUTDOWN	108	/* Cannot send after transport endpoint shutdown */
+#define	ETOOMANYREFS	109	/* Too many references: cannot splice */
+#define	ETIMEDOUT	110	/* Connection timed out */
+#define	ECONNREFUSED	111	/* Connection refused */
+#define	EHOSTDOWN	112	/* Host is down */
+#define	EHOSTUNREACH	113	/* No route to host */
+#define	EALREADY	114	/* Operation already in progress */
+#define	EINPROGRESS	115	/* Operation now in progress */
+#define	ESTALE		116	/* Stale NFS file handle */
+#define	EUCLEAN		117	/* Structure needs cleaning */
+#define	ENOTNAM		118	/* Not a XENIX named type file */
+#define	ENAVAIL		119	/* No XENIX semaphores available */
+#define	EISNAM		120	/* Is a named type file */
+#define	EREMOTEIO	121	/* Remote I/O error */
+#define	EDQUOT		122	/* Quota exceeded */
+
+#define	ENOMEDIUM	123	/* No medium found */
+#define	EMEDIUMTYPE	124	/* Wrong medium type */
+#define	ECANCELED	125	/* Operation Canceled */
+#define	ENOKEY		126	/* Required key not available */
+#define	EKEYEXPIRED	127	/* Key has expired */
+#define	EKEYREVOKED	128	/* Key has been revoked */
+#define	EKEYREJECTED	129	/* Key was rejected by service */
+
+/* for robust mutexes */
+#define	EOWNERDEAD	130	/* Owner died */
+#define	ENOTRECOVERABLE	131	/* State not recoverable */
+
+#endif