Function librbd_sys::rbd_list_children
[−]
[src]
pub unsafe extern "C" fn rbd_list_children(
image: rbd_image_t,
pools: *mut c_char,
pools_len: *mut size_t,
images: *mut c_char,
images_len: *mut size_t
) -> ssize_t
List all images that are cloned from the image at the snapshot that is set via rbd_snap_set().
This iterates over all pools, so it should be run by a user with read access to all of them. pools_len and images_len are filled in with the number of bytes put into the pools and images buffers. If the provided buffers are too short, the required lengths are still filled in, but the data is not and -ERANGE is returned. Otherwise, the buffers are filled with the pool and image names of the children, with a '\0' after each.
Arguments
image
which image (and implicitly snapshot) to list clones ofpools
buffer in which to store pool namespools_len
number of bytes in pools bufferimages
buffer in which to store image namesimages_len
number of bytes in images buffer @returns number of children on success, negative error code on failure @returns -ERANGE if either buffer is too short