From 2c27c65ed0696f0b5df2dad2cf6462d72164d547 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 4 Jun 2010 11:30:04 +0200 Subject: check ATTR_SIZE contraints in inode_change_ok Make sure we check the truncate constraints early on in ->setattr by adding those checks to inode_change_ok. Also clean up and document inode_change_ok to make this obvious. As a fallout we don't have to call inode_newsize_ok from simple_setsize and simplify it down to a truncate_setsize which doesn't return an error. This simplifies a lot of setattr implementations and means we use truncate_setsize almost everywhere. Get rid of fat_setsize now that it's trivial and mark ext2_setsize static to make the calling convention obvious. Keep the inode_newsize_ok in vmtruncate for now as all callers need an audit for its removal anyway. Note: setattr code in ecryptfs doesn't call inode_change_ok at all and needs a deeper audit, but that is left for later. Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- fs/ufs/truncate.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'fs/ufs') diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c index 085e11623b7..34d5cb13532 100644 --- a/fs/ufs/truncate.c +++ b/fs/ufs/truncate.c @@ -500,11 +500,6 @@ out: return err; } -/* - * TODO: - * - truncate case should use proper ordering instead of using - * simple_setsize - */ int ufs_setattr(struct dentry *dentry, struct iattr *attr) { struct inode *inode = dentry->d_inode; @@ -518,9 +513,9 @@ int ufs_setattr(struct dentry *dentry, struct iattr *attr) if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) { loff_t old_i_size = inode->i_size; - error = simple_setsize(inode, attr->ia_size); - if (error) - return error; + /* XXX(truncate): truncate_setsize should be called last */ + truncate_setsize(inode, attr->ia_size); + error = ufs_truncate(inode, old_i_size); if (error) return error; -- cgit v1.2.3