@@ -53,19 +53,26 @@ EXPORT_SYMBOL(vfs_ioctl);
static int ioctl_fibmap(struct file *filp, int __user *p)
{
- struct address_space *mapping = filp->f_mapping;
- int res, block;
+ struct inode *inode = file_inode(filp);
+ int error, ur_block;
+ sector_t block;
- /* do we support this mess? */
- if (!mapping->a_ops->bmap)
- return -EINVAL;
if (!capable(CAP_SYS_RAWIO))
return -EPERM;
- res = get_user(block, p);
- if (res)
- return res;
- res = mapping->a_ops->bmap(mapping, block);
- return put_user(res, p);
+
+ error = get_user(ur_block, p);
+ if (error)
+ return error;
+
+ block = ur_block;
+ error = bmap(inode, &block);
+ if (error)
+ return error;
+ ur_block = block;
+
+ error = put_user(ur_block, p);
+
+ return error;
}
/**
Now we have the possibility of proper error return in bmap, use bmap() function in ioctl_fibmap() instead of calling ->bmap method directly. V3: - Rename usr_blk to ur_block V2: - Use a local sector_t variable to asign the block number instead of using direct casting. Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com> --- fs/ioctl.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-)