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| author | Christoph Hellwig | 2010-06-04 11:30:04 +0200 |
|---|---|---|
| committer | Al Viro | 2010-08-09 22:47:39 +0200 |
| commit | 2c27c65ed0696f0b5df2dad2cf6462d72164d547 (patch) | |
| tree | 7d9036e3dea98938f7fd7074366ee73929e9b2e5 /include | |
| parent | always call inode_change_ok early in ->setattr (diff) | |
| download | kernel-qcow2-linux-2c27c65ed0696f0b5df2dad2cf6462d72164d547.tar.gz kernel-qcow2-linux-2c27c65ed0696f0b5df2dad2cf6462d72164d547.tar.xz kernel-qcow2-linux-2c27c65ed0696f0b5df2dad2cf6462d72164d547.zip | |
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 'include')
| -rw-r--r-- | include/linux/fs.h | 1 | ||||
| -rw-r--r-- | include/linux/mm.h | 1 |
2 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 6ecb83c00a6d..5547b1b027db 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2355,7 +2355,6 @@ extern int simple_link(struct dentry *, struct inode *, struct dentry *); extern int simple_unlink(struct inode *, struct dentry *); extern int simple_rmdir(struct inode *, struct dentry *); extern int simple_rename(struct inode *, struct dentry *, struct inode *, struct dentry *); -extern int simple_setsize(struct inode *, loff_t); extern int noop_fsync(struct file *, int); extern int simple_empty(struct dentry *); extern int simple_readpage(struct file *file, struct page *page); diff --git a/include/linux/mm.h b/include/linux/mm.h index a2b48041b910..980164ea10ee 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -815,6 +815,7 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping, } extern void truncate_pagecache(struct inode *inode, loff_t old, loff_t new); +extern void truncate_setsize(struct inode *inode, loff_t newsize); extern int vmtruncate(struct inode *inode, loff_t offset); extern int vmtruncate_range(struct inode *inode, loff_t offset, loff_t end); |