{ Copyright 2000-2005 The Apache Software Foundation or its licensors, as
 * applicable.
 *
 * Licensed 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.
 }

{
 * @file apr_errno.h
 * @brief APR Error Codes
 }

{#include "apr.h"

#if APR_HAVE_ERRNO_H
#include <errno.h>
#endif}

{
 * @defgroup apr_errno Error Codes
 * @ingroup APR 
 }

{
 * Type for specifying an error or status code.
 }
type
  apr_status_t = Integer;
  Papr_status_t = ^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.
 }
function apr_strerror(statcode: apr_status_t; buf: PChar; bufsize: apr_size_t): PChar;
 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
 external LibAPR name LibNamePrefix + 'apr_strerror' + LibSuff12;

{$ifdef 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) }

const
{
 * APR_OS_START_ERROR is where the APR specific error values start.
 }
  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.
 }
  APR_OS_ERRSPACE_SIZE = 50000;
{
 * APR_OS_START_STATUS is where the APR specific status codes start.
 }
  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.
 }
  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.
 }
  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.
 }
  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.
 }
  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.
 }
  APR_OS_START_SYSERR =   (APR_OS_START_EAIERR + APR_OS_ERRSPACE_SIZE);

{ no error. @see APR_STATUS_IS_SUCCESS }
  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 }
  APR_ENOSTAT =       (APR_OS_START_ERROR + 1);
{ @see APR_STATUS_IS_ENOPOOL }
  APR_ENOPOOL =       (APR_OS_START_ERROR + 2);
{ empty slot: +3 }
{ @see APR_STATUS_IS_EBADDATE }
  APR_EBADDATE =      (APR_OS_START_ERROR + 4);
{ @see APR_STATUS_IS_EINVALSOCK }
  APR_EINVALSOCK =    (APR_OS_START_ERROR + 5);
{ @see APR_STATUS_IS_ENOPROC }
  APR_ENOPROC =       (APR_OS_START_ERROR + 6);
{ @see APR_STATUS_IS_ENOTIME }
  APR_ENOTIME =       (APR_OS_START_ERROR + 7);
{ @see APR_STATUS_IS_ENODIR }
  APR_ENODIR  =       (APR_OS_START_ERROR + 8);
{ @see APR_STATUS_IS_ENOLOCK }
  APR_ENOLOCK =       (APR_OS_START_ERROR + 9);
{ @see APR_STATUS_IS_ENOPOLL }
  APR_ENOPOLL =       (APR_OS_START_ERROR + 10);
{ @see APR_STATUS_IS_ENOSOCKET }
  APR_ENOSOCKET =     (APR_OS_START_ERROR + 11);
{ @see APR_STATUS_IS_ENOTHREAD }
  APR_ENOTHREAD =     (APR_OS_START_ERROR + 12);
{ @see APR_STATUS_IS_ENOTHDKEY }
  APR_ENOTHDKEY =     (APR_OS_START_ERROR + 13);
{ @see APR_STATUS_IS_EGENERAL }
  APR_EGENERAL =      (APR_OS_START_ERROR + 14);
{ @see APR_STATUS_IS_ENOSHMAVAIL }
  APR_ENOSHMAVAIL =   (APR_OS_START_ERROR + 15);
{ @see APR_STATUS_IS_EBADIP }
  APR_EBADIP =        (APR_OS_START_ERROR + 16);
{ @see APR_STATUS_IS_EBADMASK }
  APR_EBADMASK =      (APR_OS_START_ERROR + 17);
{ empty slot: +18 }
{ @see APR_STATUS_IS_EDSOPEN }
  APR_EDSOOPEN =      (APR_OS_START_ERROR + 19);
{ @see APR_STATUS_IS_EABSOLUTE }
  APR_EABSOLUTE =     (APR_OS_START_ERROR + 20);
{ @see APR_STATUS_IS_ERELATIVE }
  APR_ERELATIVE =     (APR_OS_START_ERROR + 21);
{ @see APR_STATUS_IS_EINCOMPLETE }
  APR_EINCOMPLETE =   (APR_OS_START_ERROR + 22);
{ @see APR_STATUS_IS_EABOVEROOT }
  APR_EABOVEROOT =    (APR_OS_START_ERROR + 23);
{ @see APR_STATUS_IS_EBADPATH }
 APR_EBADPATH =      (APR_OS_START_ERROR + 24);
{ @see APR_STATUS_IS_EPATHWILD }
  APR_EPATHWILD =     (APR_OS_START_ERROR + 25);
{ @see APR_STATUS_IS_ESYMNOTFOUND }
  APR_ESYMNOTFOUND =  (APR_OS_START_ERROR + 26);
{ @see APR_STATUS_IS_EPROC_UNKNOWN }
  APR_EPROC_UNKNOWN = (APR_OS_START_ERROR + 27);

{
 * @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
 *      correcponding 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)

{
 * @addtogroup APR_Error
 }
{ @see APR_STATUS_IS_INCHILD }
  APR_INCHILD       = (APR_OS_START_STATUS + 1);
{ @see APR_STATUS_IS_INPARENT }
  APR_INPARENT      = (APR_OS_START_STATUS + 2);
{ @see APR_STATUS_IS_DETACH }
  APR_DETACH        = (APR_OS_START_STATUS + 3);
{ @see APR_STATUS_IS_NOTDETACH }
  APR_NOTDETACH     = (APR_OS_START_STATUS + 4);
{ @see APR_STATUS_IS_CHILD_DONE }
  APR_CHILD_DONE    = (APR_OS_START_STATUS + 5);
{ @see APR_STATUS_IS_CHILD_NOTDONE }
  APR_CHILD_NOTDONE = (APR_OS_START_STATUS + 6);
{ @see APR_STATUS_IS_TIMEUP }
  APR_TIMEUP        = (APR_OS_START_STATUS + 7);
{ @see APR_STATUS_IS_INCOMPLETE }
  APR_INCOMPLETE    = (APR_OS_START_STATUS + 8);
{ empty slot: +9 }
{ empty slot: +10 }
{ empty slot: +11 }
{ @see APR_STATUS_IS_BADCH }
  APR_BADCH         = (APR_OS_START_STATUS + 12);
{ @see APR_STATUS_IS_BADARG }
  APR_BADARG        = (APR_OS_START_STATUS + 13);
{ @see APR_STATUS_IS_EOF }
  APR_EOF           = (APR_OS_START_STATUS + 14);
{ @see APR_STATUS_IS_NOTFOUND }
  APR_NOTFOUND      = (APR_OS_START_STATUS + 15);
{ empty slot: +16 }
{ empty slot: +17 }
{ empty slot: +18 }
{ @see APR_STATUS_IS_ANONYMOUS }
  APR_ANONYMOUS     = (APR_OS_START_STATUS + 19);
{ @see APR_STATUS_IS_FILEBASED }
  APR_FILEBASED     = (APR_OS_START_STATUS + 20);
{ @see APR_STATUS_IS_KEYBASED }
  APR_KEYBASED      = (APR_OS_START_STATUS + 21);
{ @see APR_STATUS_IS_EINIT }
  APR_EINIT         = (APR_OS_START_STATUS + 22);
{ @see APR_STATUS_IS_ENOTIMPL }
  APR_ENOTIMPL      = (APR_OS_START_STATUS + 23);
{ @see APR_STATUS_IS_EMISMATCH }
  APR_EMISMATCH     = (APR_OS_START_STATUS + 24);
{ @see APR_STATUS_IS_EBUSY }
  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 }
{#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))

#define APR_STATUS_IS_SUCCESS(s)           ((s) == APR_SUCCESS \
                || (s) == APR_OS_START_SYSERR + NO_ERROR)
}
{ These can't sit in a private header, so in spite of the extra size,
 * they need to be made available here.
 }
  SOCBASEERR             = 10000;
  SOCEPERM               = (SOCBASEERR+1);             { Not owner }
  SOCESRCH               = (SOCBASEERR+3);             { No such process }
  SOCEINTR               = (SOCBASEERR+4);             { Interrupted system call }
  SOCENXIO               = (SOCBASEERR+6);             { No such device or address }
  SOCEBADF               = (SOCBASEERR+9);             { Bad file number }
  SOCEACCES              = (SOCBASEERR+13);            { Permission denied }
  SOCEFAULT              = (SOCBASEERR+14);            { Bad address }
  SOCEINVAL              = (SOCBASEERR+22);            { Invalid argument }
  SOCEMFILE              = (SOCBASEERR+24);            { Too many open files }
  SOCEPIPE               = (SOCBASEERR+32);            { Broken pipe }
  SOCEOS2ERR             = (SOCBASEERR+100);           { OS/2 Error }
  SOCEWOULDBLOCK         = (SOCBASEERR+35);            { Operation would block }
  SOCEINPROGRESS         = (SOCBASEERR+36);            { Operation now in progress }
  SOCEALREADY            = (SOCBASEERR+37);            { Operation already in progress }
  SOCENOTSOCK            = (SOCBASEERR+38);            { Socket operation on non-socket }
  SOCEDESTADDRREQ        = (SOCBASEERR+39);            { Destination address required }
  SOCEMSGSIZE            = (SOCBASEERR+40);            { Message too long }
  SOCEPROTOTYPE          = (SOCBASEERR+41);            { Protocol wrong type for socket }
  SOCENOPROTOOPT         = (SOCBASEERR+42);            { Protocol not available }
  SOCEPROTONOSUPPORT     = (SOCBASEERR+43);            { Protocol not supported }
  SOCESOCKTNOSUPPORT     = (SOCBASEERR+44);            { Socket type not supported }
  SOCEOPNOTSUPP          = (SOCBASEERR+45);            { Operation not supported on socket }
  SOCEPFNOSUPPORT        = (SOCBASEERR+46);            { Protocol family not supported }
  SOCEAFNOSUPPORT        = (SOCBASEERR+47);            { Address family not supported by protocol family }
  SOCEADDRINUSE          = (SOCBASEERR+48);            { Address already in use }
  SOCEADDRNOTAVAIL       = (SOCBASEERR+49);            { Can't assign requested address }
  SOCENETDOWN            = (SOCBASEERR+50);            { Network is down }
  SOCENETUNREACH         = (SOCBASEERR+51);            { Network is unreachable }
  SOCENETRESET           = (SOCBASEERR+52);            { Network dropped connection on reset }
  SOCECONNABORTED        = (SOCBASEERR+53);            { Software caused connection abort }
  SOCECONNRESET          = (SOCBASEERR+54);            { Connection reset by peer }
  SOCENOBUFS             = (SOCBASEERR+55);            { No buffer space available }
  SOCEISCONN             = (SOCBASEERR+56);            { Socket is already connected }
  SOCENOTCONN            = (SOCBASEERR+57);            { Socket is not connected }
  SOCESHUTDOWN           = (SOCBASEERR+58);            { Can't send after socket shutdown }
  SOCETOOMANYREFS        = (SOCBASEERR+59);            { Too many references: can't splice }
  SOCETIMEDOUT           = (SOCBASEERR+60);            { Connection timed out }
  SOCECONNREFUSED        = (SOCBASEERR+61);            { Connection refused }
  SOCELOOP               = (SOCBASEERR+62);            { Too many levels of symbolic links }
  SOCENAMETOOLONG        = (SOCBASEERR+63);            { File name too long }
  SOCEHOSTDOWN           = (SOCBASEERR+64);            { Host is down }
  SOCEHOSTUNREACH        = (SOCBASEERR+65);            { No route to host }
  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)
#define APR_STATUS_IS_ETIMEDOUT(s)      ((s) == APR_ETIMEDOUT \
                || (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)))

#define APR_STATUS_IS_SUCCESS(s)           ((s) == APR_SUCCESS \
                || (s) == APR_OS_START_SYSERR + ERROR_SUCCESS)
}
{ 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)
#define APR_STATUS_IS_ETIMEDOUT(s)      ((s) == APR_ETIMEDOUT \
                || (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(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)))

#define APR_STATUS_IS_SUCCESS(s)           ((s) == APR_SUCCESS)
}
{ 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)
#define APR_STATUS_IS_ETIMEDOUT(s)      ((s) == APR_ETIMEDOUT \
                || (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
 }
{ no error }
//#define APR_STATUS_IS_SUCCESS(s)        ((s) == APR_SUCCESS)

{ 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 }
//#define APR_STATUS_IS_ENOSPC(s)         ((s) == APR_ENOSPC)
{ 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 }
//#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) }

