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fuse: honor RLIMIT_FSIZE in fuse_file_fallocate

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commit 0cbade024ba501313da3b7e5dd2a188a6bc491b5 upstream.

fstests generic/228 reported this failure that fuse fallocate does not
honor what 'ulimit -f' has set.

This adds the necessary inode_newsize_ok() check.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Fixes: 05ba1f0823 ("fuse: add FALLOCATE operation")
Cc: <stable@vger.kernel.org> # v3.5
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Liu Bo 2019-04-18 04:04:41 +08:00 • committed by Greg Kroah-Hartman
parent 73724958d1
commit 40857ab739
1 changed files with 7 additions and 0 deletions
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7
fs/fuse/file.c
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@ -2947,6 +2947,13 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
}
}
if (!(mode & FALLOC_FL_KEEP_SIZE) &&
offset + length > i_size_read(inode)) {
err = inode_newsize_ok(inode, offset + length);
if (err)
return err;
}
if (!(mode & FALLOC_FL_KEEP_SIZE))
set_bit(FUSE_I_SIZE_UNSTABLE, &fi->state);