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authorChristoph Hellwig <hch@lst.de>2010-06-04 11:30:04 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2010-08-09 16:47:39 -0400
commit2c27c65ed0696f0b5df2dad2cf6462d72164d547 (patch)
tree7d9036e3dea98938f7fd7074366ee73929e9b2e5 /fs/ocfs2
parentdb78b877f7744bec4a9d9f9e7d10da3931d7cd39 (diff)
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 <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ocfs2')
-rw-r--r--fs/ocfs2/file.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 584cf8ac167..81296b4e364 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1233,7 +1233,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
}
/*
- * This will intentionally not wind up calling simple_setsize(),
+ * This will intentionally not wind up calling truncate_setsize(),
* since all the work for a size change has been done above.
* Otherwise, we could get into problems with truncate as
* ip_alloc_sem is used there to protect against i_size
@@ -2308,12 +2308,12 @@ relock:
* blocks outside i_size. Trim these off again.
* Don't need i_size_read because we hold i_mutex.
*
- * XXX(hch): this looks buggy because ocfs2 did not
+ * XXX(truncate): this looks buggy because ocfs2 did not
* actually implement ->truncate. Take a look at
* the new truncate sequence and update this accordingly
*/
if (*ppos + count > inode->i_size)
- simple_setsize(inode, inode->i_size);
+ truncate_setsize(inode, inode->i_size);
ret = written;
goto out_dio;
}