/usr/include/guacamole/error.h is in libguac-dev 0.8.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is libguac.
*
* The Initial Developer of the Original Code is
* Michael Jumper.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef _GUAC_ERROR_H
#define _GUAC_ERROR_H
/**
* Provides functions and structures required for handling return values and
* errors.
*
* @file error.h
*/
/**
* Return codes shared by all Guacamole functions which can fail.
*/
typedef enum guac_status {
/**
* No errors occurred and the operation was successful.
*/
GUAC_STATUS_SUCCESS = 0,
/**
* Insufficient memory to complete the operation.
*/
GUAC_STATUS_NO_MEMORY,
/**
* The end of the input stream associated with the operation
* has been reached.
*/
GUAC_STATUS_NO_INPUT,
/**
* A timeout occurred while reading from the input stream associated
* with the operation.
*/
GUAC_STATUS_INPUT_TIMEOUT,
/**
* An error occurred, and further information about the error is already
* stored in errno.
*/
GUAC_STATUS_SEE_ERRNO,
/**
* An error prevented the operation from writing to its associated
* output stream.
*/
GUAC_STATUS_OUTPUT_ERROR,
/**
* The operation could not be performed because an invalid argument was
* given.
*/
GUAC_STATUS_BAD_ARGUMENT,
/**
* The state of the associated system prevents an operation from being
* performed which would otherwise be allowed.
*/
GUAC_STATUS_BAD_STATE
} guac_status;
/**
* Returns a human-readable explanation of the status code given.
*/
const char* guac_status_string(guac_status status);
/**
* Returns the status code associated with the error which occurred during the
* last function call. This value will only be set by functions documented to
* use it (most libguac functions), and is undefined if no error occurred.
*
* The storage of this value is thread-local. Assignment of a status code to
* guac_error in one thread will not affect its value in another thread.
*/
#define guac_error (*__guac_error())
guac_status* __guac_error();
/**
* Returns a message describing the error which occurred during the last
* function call. If an error occurred, but no message is associated with it,
* NULL is returned. This value is undefined if no error occurred.
*
* The storage of this value is thread-local. Assignment of a message to
* guac_error_message in one thread will not affect its value in another
* thread.
*/
#define guac_error_message (*__guac_error_message())
const char** __guac_error_message();
#endif
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