fs/ntfs3: Check new size for limits

commit 114346978cf61de02832cc3cc68432a3de70fb38 upstream.

We must check size before trying to allocate.
Size can be set for example by "ulimit -f".
Fixes xfstest generic/228
Fixes: 4342306f0f0d ("fs/ntfs3: Add file operations and implementation")
Reviewed-by: Kari Argillander <kari.argillander@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index 1eb5d88e661c79ecb3307ad9404ebb16c2e3532a..3bae76930e68a012a00df9f35cc15cc3b35be1d6 100644 (file)
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -662,7 +662,13 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
                /*
                 * Normal file: Allocate clusters, do not change 'valid' size.
                 */
-               err = ntfs_set_size(inode, max(end, i_size));
+               loff_t new_size = max(end, i_size);
+
+               err = inode_newsize_ok(inode, new_size);
+               if (err)
+                       goto out;
+
+               err = ntfs_set_size(inode, new_size);
                if (err)
                        goto out;