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/gfs2/aops.c | 4 ++-- fs/gfs2/ops_inode.c | 6 ++---- 2 files changed, 4 insertions(+), 6 deletions(-) (limited to 'fs/gfs2') diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 703000d..54fe087 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -702,12 +702,12 @@ out: page_cache_release(page); /* - * XXX(hch): the call below should probably be replaced with + * XXX(truncate): the call below should probably be replaced with * a call to the gfs2-specific truncate blocks helper to actually * release disk blocks.. */ if (pos + len > ip->i_inode.i_size) - simple_setsize(&ip->i_inode, ip->i_inode.i_size); + truncate_setsize(&ip->i_inode, ip->i_inode.i_size); out_endtrans: gfs2_trans_end(sdp); out_trans_fail: diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index d7d410a..1009be2 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -1072,7 +1072,7 @@ int gfs2_permission(struct inode *inode, int mask) } /* - * XXX: should be changed to have proper ordering by opencoding simple_setsize + * XXX(truncate): the truncate_setsize calls should be moved to the end. */ static int setattr_size(struct inode *inode, struct iattr *attr) { @@ -1084,10 +1084,8 @@ static int setattr_size(struct inode *inode, struct iattr *attr) error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); if (error) return error; - error = simple_setsize(inode, attr->ia_size); + truncate_setsize(inode, attr->ia_size); gfs2_trans_end(sdp); - if (error) - return error; } error = gfs2_truncatei(ip, attr->ia_size); -- cgit v1.1