On Tue, May 04, 2010 at 11:15:04AM +0530, Nikanth Karthikesan wrote:
> I assumed that Amit would send a patch with s-o-b, if not, please take
> this patch.
Have added my sign-off below. Thanks!
--
Regards,
Amit Arora
> Thanks
> Nikanth
>
> Prevent creation of files larger than RLIMIT_FSIZE using fallocate.
>
> Currently using posix_fallocate one can bypass an RLIMIT_FSIZE limit
> and create a file larger than the limit. Add a check for that.
>
>
> Signed-off-by: Nikanth Karthikesan <knikanth@xxxxxxx>
Signed-off-by: Amit Arora <aarora@xxxxxxxxxx>
> ---
>
> diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
> index 236b834..39b8123 100644
> --- a/fs/ext4/extents.c
> +++ b/fs/ext4/extents.c
> @@ -3672,6 +3672,11 @@ long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len)
> */
> credits = ext4_chunk_trans_blocks(inode, max_blocks);
> mutex_lock(&inode->i_mutex);
> + ret = inode_newsize_ok(inode, (len + offset));
> + if (ret) {
> + mutex_unlock(&inode->i_mutex);
> + return ret;
> + }
> retry:
> while (ret >= 0 && ret < max_blocks) {
> block = block + ret;
--
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