Index: src/OFFile.m
==================================================================
--- src/OFFile.m
+++ src/OFFile.m
@@ -593,20 +593,24 @@
 
 - (void)_seekToOffset: (off_t)offset
 {
 	if (lseek(fd, offset, SEEK_SET) == -1)
 		@throw [OFSeekFailedException newWithClass: isa
-						    stream: self];
+						    stream: self
+						    offset: offset
+						    whence: SEEK_SET];
 }
 
 - (off_t)_seekForwardWithOffset: (off_t)offset
 {
 	off_t ret;
 
 	if ((ret = lseek(fd, offset, SEEK_CUR)) == -1)
 		@throw [OFSeekFailedException newWithClass: isa
-						    stream: self];
+						    stream: self
+						    offset: offset
+						    whence: SEEK_CUR];
 
 	return ret;
 }
 
 - (off_t)_seekToOffsetRelativeToEnd: (off_t)offset
@@ -613,11 +617,13 @@
 {
 	off_t ret;
 
 	if ((ret = lseek(fd, offset, SEEK_END)) == -1)
 		@throw [OFSeekFailedException newWithClass: isa
-						    stream: self];
+						    stream: self
+						    offset: offset
+						    whence: SEEK_END];
 
 	return ret;
 }
 
 - (int)fileDescriptor

Index: src/exceptions/OFSeekFailedException.h
==================================================================
--- src/exceptions/OFSeekFailedException.h
+++ src/exceptions/OFSeekFailedException.h
@@ -11,10 +11,12 @@
  * 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.
  */
+
+#include <unistd.h>
 
 #import "OFException.h"
 
 @class OFSeekableStream;
 
@@ -22,39 +24,61 @@
  * \brief An exception indicating that seeking in a stream failed.
  */
 @interface OFSeekFailedException: OFException
 {
 	OFSeekableStream *stream;
+	off_t		 offset;
+	int		 whence;
 	int		 errNo;
 }
 
 #ifdef OF_HAVE_PROPERTIES
 @property (readonly, nonatomic) OFSeekableStream *stream;
+@property (readonly) off_t offset;
+@property (readonly) int whence;
 @property (readonly) int errNo;
 #endif
 
 /**
  * \param stream The stream for which seeking failed
+ * \param offset The offset to which seeking failed
+ * \param whence To what the offset is relative
  * \return A new seek failed exception
  */
 + newWithClass: (Class)class_
-	stream: (OFSeekableStream*)stream;
+	stream: (OFSeekableStream*)stream
+	offset: (off_t)offset
+	whence: (int)whence;
 
 /**
  * Initializes an already allocated seek failed exception.
  *
  * \param stream The stream for which seeking failed
+ * \param offset The offset to which seeking failed
+ * \param whence To what the offset is relative
  * \return An initialized seek failed exception
  */
 - initWithClass: (Class)class_
-	 stream: (OFSeekableStream*)stream;
+	 stream: (OFSeekableStream*)stream
+	 offset: (off_t)offset
+	 whence: (int)whence;
 
 /**
  * \return The stream for which seeking failed
  */
 - (OFSeekableStream*)stream;
 
+/**
+ * \return The offset to which seeking failed
+ */
+- (off_t)offset;
+
+/**
+ * \return To what the offset is relative
+ */
+- (int)whence;
+
 /**
  * \return The errno from when the exception was created
  */
 - (int)errNo;
 @end

Index: src/exceptions/OFSeekFailedException.m
==================================================================
--- src/exceptions/OFSeekFailedException.m
+++ src/exceptions/OFSeekFailedException.m
@@ -24,13 +24,17 @@
 #import "common.h"
 
 @implementation OFSeekFailedException
 + newWithClass: (Class)class_
 	stream: (OFSeekableStream*)stream
+	offset: (off_t)offset
+	whence: (int)whence
 {
 	return [[self alloc] initWithClass: class_
-				    stream: stream];
+				    stream: stream
+				    offset: offset
+				    whence: whence];
 }
 
 - initWithClass: (Class)class_
 {
 	Class c = isa;
@@ -39,15 +43,19 @@
 					      selector: _cmd];
 }
 
 - initWithClass: (Class)class_
 	 stream: (OFSeekableStream*)stream_
+	 offset: (off_t)offset_
+	 whence: (int)whence_
 {
 	self = [super initWithClass: class_];
 
 	@try {
 		stream = [stream_ retain];
+		offset = offset_;
+		whence = whence_;
 		errNo = GET_ERRNO;
 	} @catch (id e) {
 		[self release];
 		@throw e;
 	}
@@ -75,11 +83,21 @@
 
 - (OFSeekableStream*)stream
 {
 	return stream;
 }
+
+- (off_t)offset
+{
+	return offset;
+}
+
+- (int)whence
+{
+	return whence;
+}
 
 - (int)errNo
 {
 	return errNo;
 }
 @end