On 10/4/20 12:24 PM, Alexander Mikhalitsyn wrote:
> +#define OVL_IOC_GETLWRFHNDLSNUM _IO('o', 1)
> +// DISCUSS: what if MAX_HANDLE_SZ will change?
> +#define OVL_IOC_GETLWRFHNDL _IOR('o', 2, struct
> ovl_mnt_opt_fh)
> +#define OVL_IOC_GETUPPRFHNDL
Add several ioctls to ovl_dir_operations that allows to get file handles
for upperdir, workdir, lowerdir dentries. Special {s_dev; fhandle}
format used. (Ideally should be {mnt_id; fhandle} but this impossible
because overlayfs not keeps mounts refcnt for layers.)
Added ioctls list:
OVL_IOC_GETLWR
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