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+/* 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 to 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_UTIL_ERRSPACE_SIZE is the size of the space that is reserved for
+ * use within apr-util. This space is reserved above that used by APR
+ * internally.
+ * @note This number MUST be smaller than APR_OS_ERRSPACE_SIZE by a
+ * large enough amount that APR has sufficient room for its
+ * codes.
+ */
+#define APR_UTIL_ERRSPACE_SIZE 20000
+/**
+ * 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_UTIL_START_STATUS is where APR-Util starts defining its
+ * status codes.
+ */
+#define APR_UTIL_START_STATUS (APR_OS_START_STATUS + \
+ (APR_OS_ERRSPACE_SIZE - APR_UTIL_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.
+ *
+ * In general applications should try and create unique error codes. To try
+ * and assist in finding suitable ranges of numbers to use, the following
+ * ranges are known to be used by the listed applications. If your
+ * application defines error codes please advise the range of numbers it
+ * uses to dev@apr.apache.org for inclusion in this list.
+ *
+ * Ranges shown are in relation to APR_OS_START_USERERR
+ *
+ * Subversion - Defined ranges, of less than 100, at intervals of 5000
+ * starting at an offset of 5000, e.g.
+ * +5000 to 5100, +10000 to 10100
+ *
+ * Apache HTTPD - +2000 to 2999
+ */
+#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)
+
+/**
+ * @defgroup APR_ERROR_map APR Error Space
+ * <PRE>
+ * The following attempts to show the relation of the various constants
+ * used for mapping APR Status codes.
+ *
+ * 0
+ *
+ * 20,000 APR_OS_START_ERROR
+ *
+ * + APR_OS_ERRSPACE_SIZE (50,000)
+ *
+ * 70,000 APR_OS_START_STATUS
+ *
+ * + APR_OS_ERRSPACE_SIZE - APR_UTIL_ERRSPACE_SIZE (30,000)
+ *
+ * 100,000 APR_UTIL_START_STATUS
+ *
+ * + APR_UTIL_ERRSPACE_SIZE (20,000)
+ *
+ * 120,000 APR_OS_START_USERERR
+ *
+ * + 10 x APR_OS_ERRSPACE_SIZE (50,000 * 10)
+ *
+ * 620,000 APR_OS_START_CANONERR
+ *
+ * + APR_OS_ERRSPACE_SIZE (50,000)
+ *
+ * 670,000 APR_OS_START_EAIERR
+ *
+ * + APR_OS_ERRSPACE_SIZE (50,000)
+ *
+ * 720,000 APR_OS_START_SYSERR
+ *
+ * </PRE>
+ */
+
+/** 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
+ * APR_ENOTENOUGHENTROPY Not enough entropy to continue
+ * </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_EEXIST */
+#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
+
+/** @see APR_STATUS_IS_EAFNOSUPPORT */
+#ifdef EAFNOSUPPORT
+#define APR_EAFNOSUPPORT EAFNOSUPPORT
+#else
+#define APR_EAFNOSUPPORT (APR_OS_START_CANONERR + 27)
+#endif
+
+/** @see APR_STATUS_IS_EOPNOTSUPP */
+#ifdef EOPNOTSUPP
+#define APR_EOPNOTSUPP EOPNOTSUPP
+#else
+#define APR_EOPNOTSUPP (APR_OS_START_CANONERR + 28)
+#endif
+
+/** @see APR_STATUS_IS_ERANGE */
+#ifdef ERANGE
+#define APR_ERANGE ERANGE
+#else
+#define APR_ERANGE (APR_OS_START_CANONERR + 29)
+#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)
+#define APR_STATUS_IS_EAFNOSUPPORT(s) ((s) == APR_AFNOSUPPORT \
+ || (s) == APR_OS_START_SYSERR + SOCEAFNOSUPPORT)
+#define APR_STATUS_IS_EOPNOTSUPP(s) ((s) == APR_EOPNOTSUPP \
+ || (s) == APR_OS_START_SYSERR + SOCEOPNOTSUPP)
+#define APR_STATUS_IS_ERANGE(s) ((s) == APR_ERANGE)
+
+/*
+ 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 },
+ { SOCEPFNOSUPPORT, EPFNOSUPPORT },
+ { 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 \
+ || (s) == APR_OS_START_SYSERR + ERROR_DIRECTORY)
+#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)
+#define APR_STATUS_IS_EAFNOSUPPORT(s) ((s) == APR_EAFNOSUPPORT \
+ || (s) == APR_OS_START_SYSERR + WSAEAFNOSUPPORT)
+#define APR_STATUS_IS_EOPNOTSUPP(s) ((s) == APR_EOPNOTSUPP \
+ || (s) == APR_OS_START_SYSERR + WSAEOPNOTSUPP)
+#define APR_STATUS_IS_ERANGE(s) ((s) == APR_ERANGE)
+
+#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)
+#define APR_STATUS_IS_EAFNOSUPPORT(s) ((s) == APR_EAFNOSUPPORT \
+ || (s) == APR_OS_START_SYSERR + WSAEAFNOSUPPORT)
+#define APR_STATUS_IS_EOPNOTSUPP(s) ((s) == APR_EOPNOTSUPP \
+ || (s) == APR_OS_START_SYSERR + WSAEOPNOTSUPP)
+#define APR_STATUS_IS_ERANGE(s) ((s) == APR_ERANGE)
+
+#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)
+/** inappropriate 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)
+/** Address Family not supported */
+#define APR_STATUS_IS_EAFNOSUPPORT(s) ((s) == APR_EAFNOSUPPORT)
+/** Socket operation not supported */
+#define APR_STATUS_IS_EOPNOTSUPP(s) ((s) == APR_EOPNOTSUPP)
+
+/** Numeric value not representable */
+#define APR_STATUS_IS_ERANGE(s) ((s) == APR_ERANGE)
+/** @} */
+
+#endif /* !defined(NETWARE) && !defined(OS2) && !defined(WIN32) */
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ! APR_ERRNO_H */