#include <linux/ceph/ceph_debug.h> #include <linux/err.h> #include <linux/module.h> #include <linux/random.h> #include <linux/slab.h> #include <linux/ceph/decode.h> #include <linux/ceph/auth.h> #include "auth_none.h" static void reset(struct ceph_auth_client *ac) { struct ceph_auth_none_info *xi = ac->private; xi->starting = true; xi->built_authorizer = false; } static void destroy(struct ceph_auth_client *ac) { kfree(ac->private); ac->private = NULL; } static int is_authenticated(struct ceph_auth_client *ac) { struct ceph_auth_none_info *xi = ac->private; return !xi->starting; } static int should_authenticate(struct ceph_auth_client *ac) { struct ceph_auth_none_info *xi = ac->private; return xi->starting; } /* * the generic auth code decode the global_id, and we carry no actual * authenticate state, so nothing happens here. */ static int handle_reply(struct ceph_auth_client *ac, int result, void *buf, void *end) { struct ceph_auth_none_info *xi = ac->private; xi->starting = false; return result; } /* * build an 'authorizer' with our entity_name and global_id. we can * reuse a single static copy since it is identical for all services * we connect to. */ static int ceph_auth_none_create_authorizer( struct ceph_auth_client *ac, int peer_type, struct ceph_authorizer **a, void **buf, size_t *len, void **reply_buf, size_t *reply_len) { struct ceph_auth_none_info *ai = ac->private; struct ceph_none_authorizer *au = &ai->au; void *p, *end; int ret; if (!ai->built_authorizer) { p = au->buf; end = p + sizeof(au->buf); ceph_encode_8(&p, 1); ret = ceph_entity_name_encode(ac->name, &p, end - 8); if (ret < 0) goto bad; ceph_decode_need(&p, end, sizeof(u64), bad2); ceph_encode_64(&p, ac->global_id); au->buf_len = p - (void *)au->buf; ai->built_authorizer = true; dout("built authorizer len %d\n", au->buf_len); } *a = (struct ceph_authorizer *)au; *buf = au->buf; *len = au->buf_len; *reply_buf = au->reply_buf; *reply_len = sizeof(au->reply_buf); return 0; bad2: ret = -ERANGE; bad: return ret; } static void ceph_auth_none_destroy_authorizer(struct ceph_auth_client *ac, struct ceph_authorizer *a) { /* nothing to do */ } static const struct ceph_auth_client_ops ceph_auth_none_ops = { .name = "none", .reset = reset, .destroy = destroy, .is_authenticated = is_authenticated, .should_authenticate = should_authenticate, .handle_reply = handle_reply, .create_authorizer = ceph_auth_none_create_authorizer, .destroy_authorizer = ceph_auth_none_destroy_authorizer, }; int ceph_auth_none_init(struct ceph_auth_client *ac) { struct ceph_auth_none_info *xi; dout("ceph_auth_none_init %p\n", ac); xi = kzalloc(sizeof(*xi), GFP_NOFS); if (!xi) return -ENOMEM; xi->starting = true; xi->built_authorizer = false; ac->protocol = CEPH_AUTH_NONE; ac->private = xi; ac->ops = &ceph_auth_none_ops; return 0; }