if (likely(dx_dir))
return generic_file_llseek_size(file, offset, origin,
- ext3_get_htree_eof(file));
+ ext3_get_htree_eof(file),
+ i_size_read(inode));
else
return generic_file_llseek(file, offset, origin);
}
else
maxbytes = inode->i_sb->s_maxbytes;
- return generic_file_llseek_size(file, offset, origin, maxbytes);
+ return generic_file_llseek_size(file, offset, origin,
+ maxbytes, i_size_read(inode));
}
const struct file_operations ext4_file_operations = {
* @file: file structure to seek on
* @offset: file offset to seek to
* @origin: type of seek
- * @size: max size of file system
+ * @size: max size of this file in file system
+ * @eof: offset used for SEEK_END position
*
* This is a variant of generic_file_llseek that allows passing in a custom
- * file size.
+ * maximum file size and a custom EOF position, for e.g. hashed directories
*
* Synchronization:
* SEEK_SET and SEEK_END are unsynchronized (but atomic on 64bit platforms)
*/
loff_t
generic_file_llseek_size(struct file *file, loff_t offset, int origin,
- loff_t maxsize)
+ loff_t maxsize, loff_t eof)
{
struct inode *inode = file->f_mapping->host;
switch (origin) {
case SEEK_END:
- offset += i_size_read(inode);
+ offset += eof;
break;
case SEEK_CUR:
/*
* In the generic case the entire file is data, so as long as
* offset isn't at the end of the file then the offset is data.
*/
- if (offset >= i_size_read(inode))
+ if (offset >= eof)
return -ENXIO;
break;
case SEEK_HOLE:
* There is a virtual hole at the end of the file, so as long as
* offset isn't i_size or larger, return i_size.
*/
- if (offset >= i_size_read(inode))
+ if (offset >= eof)
return -ENXIO;
- offset = i_size_read(inode);
+ offset = eof;
break;
}
struct inode *inode = file->f_mapping->host;
return generic_file_llseek_size(file, offset, origin,
- inode->i_sb->s_maxbytes);
+ inode->i_sb->s_maxbytes,
+ i_size_read(inode));
}
EXPORT_SYMBOL(generic_file_llseek);
extern loff_t no_llseek(struct file *file, loff_t offset, int origin);
extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin);
extern loff_t generic_file_llseek_size(struct file *file, loff_t offset,
- int origin, loff_t maxsize);
+ int origin, loff_t maxsize, loff_t eof);
extern int generic_file_open(struct inode * inode, struct file * filp);
extern int nonseekable_open(struct inode * inode, struct file * filp);