ObjFW  Artifact [4ee2fb6264]

Artifact 4ee2fb6264944d515a4f173bcfb318b3a0f559e10e13978fe4e4a0ed0e8d8597:

• File src/exceptions/OFLinkFailedException.h — part of check-in [62e2de30b9] at 2015-02-16 08:39:17 on branch trunk — Explicitly pass errno to exceptions

  The old behaviour where the exception would access errno directly on
  creation of the exception was very fragile. The two main problems with
  it were that sometimes it would pick up an errno even though none had
  been set and in other cases that when the exception was created errno
  had already been overridden.

  This also greatly increases errno handling on Win32, especially in
  conjunction with sockets. It can still be improved further, though. (user: js, size: 2270) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFException.h"

#ifdef OF_HAVE_LINK
/*!
 * @class OFLinkFailedException \
 *	  OFLinkFailedException.h ObjFW/OFLinkFailedException.h
 *
 * @brief An exception indicating that creating a link failed.
 */
@interface OFLinkFailedException: OFException
{
	OFString *_sourcePath, *_destinationPath;
	int _errNo;
}

# ifdef OF_HAVE_PROPERTIES
@property (readonly, copy) OFString *sourcePath, *destinationPath;
@property (readonly) int errNo;
# endif

/*!
 * @brief Creates a new, autoreleased link failed exception.
 *
 * @param sourcePath The source for the link
 * @param destinationPath The destination for the link
 * @param errNo The errno of the error
 * @return A new, autoreleased link failed exception
 */
+ (instancetype)exceptionWithSourcePath: (OFString*)sourcePath
			destinationPath: (OFString*)destinationPath
				  errNo: (int)errNo;

/*!
 * @brief Initializes an already allocated link failed exception.
 *
 * @param sourcePath The source for the link
 * @param destinationPath The destination for the link
 * @param errNo The errno of the error
 * @return An initialized link failed exception
 */
- initWithSourcePath: (OFString*)sourcePath
     destinationPath: (OFString*)destinationPath
	       errNo: (int)errNo;

/*!
 * @brief Returns a string with the source for the link.
 *
 * @return A string with the source for the link
 */
- (OFString*)sourcePath;

/*!
 * @brief Returns a string with the destination for the link.
 *
 * @return A string with the destination for the link
 */
- (OFString*)destinationPath;

/*!
 * @brief Returns the errno from when the exception was created.
 *
 * @return The errno from when the exception was created
 */
- (int)errNo;
@end
#endif