1 // SPDX-License-Identifier: GPL-2.0-only
36 struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact)  in crypto_alg_match()  argument
48 		if ((q->cra_flags ^ p->cru_type) & p->cru_mask)  in crypto_alg_match()
51 		if (strlen(p->cru_driver_name))  in crypto_alg_match()
52 			match = !strcmp(q->cra_driver_name,  in crypto_alg_match()
53 					p->cru_driver_name);  in crypto_alg_match()
54 		else if (!exact)  in crypto_alg_match()
55 			match = !strcmp(q->cra_name, p->cru_name);  in crypto_alg_match()
80 	rcipher.blocksize = alg->cra_blocksize;  in crypto_report_cipher()
81 	rcipher.min_keysize = alg->cra_cipher.cia_min_keysize;  in crypto_report_cipher()
82 	rcipher.max_keysize = alg->cra_cipher.cia_max_keysize;  in crypto_report_cipher()
104 	strscpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name));  in crypto_report_one()
105 	strscpy(ualg->cru_driver_name, alg->cra_driver_name,  in crypto_report_one()
106 		sizeof(ualg->cru_driver_name));  in crypto_report_one()
107 	strscpy(ualg->cru_module_name, module_name(alg->cra_module),  in crypto_report_one()
108 		sizeof(ualg->cru_module_name));  in crypto_report_one()
110 	ualg->cru_type = 0;  in crypto_report_one()
111 	ualg->cru_mask = 0;  in crypto_report_one()
112 	ualg->cru_flags = alg->cra_flags;  in crypto_report_one()
113 	ualg->cru_refcnt = refcount_read(&alg->cra_refcnt);  in crypto_report_one()
115 	if (nla_put_u32(skb, CRYPTOCFGA_PRIORITY_VAL, alg->cra_priority))  in crypto_report_one()
117 	if (alg->cra_flags & CRYPTO_ALG_LARVAL) {  in crypto_report_one()
127 	if (alg->cra_type && alg->cra_type->report) {  in crypto_report_one()
128 		if (alg->cra_type->report(skb, alg))  in crypto_report_one()
134 	switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) {  in crypto_report_one()
151 	return -EMSGSIZE;  in crypto_report_one()
157 	struct sk_buff *in_skb = info->in_skb;  in crypto_report_alg()
158 	struct sk_buff *skb = info->out_skb;  in crypto_report_alg()
163 	nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, info->nlmsg_seq,  in crypto_report_alg()
164 			CRYPTO_MSG_GETALG, sizeof(*ualg), info->nlmsg_flags);  in crypto_report_alg()
166 		err = -EMSGSIZE;  in crypto_report_alg()
187 	struct net *net = sock_net(in_skb->sk);  in crypto_report()
194 	if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name))  in crypto_report()
195 		return -EINVAL;  in crypto_report()
199 		return -ENOENT;  in crypto_report()
201 	err = -ENOMEM;  in crypto_report()
208 	info.nlmsg_seq = in_nlh->nlmsg_seq;  in crypto_report()
221 	return nlmsg_unicast(net->crypto_nlsk, skb, NETLINK_CB(in_skb).portid);  in crypto_report()
226 	const size_t start_pos = cb->args[0];  in crypto_dump_report()
232 	info.in_skb = cb->skb;  in crypto_dump_report()
234 	info.nlmsg_seq = cb->nlh->nlmsg_seq;  in crypto_dump_report()
241 			if (res == -EMSGSIZE)  in crypto_dump_report()
248 	cb->args[0] = pos;  in crypto_dump_report()
249 	res = skb->len;  in crypto_dump_report()
269 		return -EPERM;  in crypto_update_alg()
271 	if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name))  in crypto_update_alg()
272 		return -EINVAL;  in crypto_update_alg()
274 	if (priority && !strlen(p->cru_driver_name))  in crypto_update_alg()
275 		return -EINVAL;  in crypto_update_alg()
279 		return -ENOENT;  in crypto_update_alg()
286 		alg->cra_priority = nla_get_u32(priority);  in crypto_update_alg()
304 		return -EPERM;  in crypto_del_alg()
306 	if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name))  in crypto_del_alg()
307 		return -EINVAL;  in crypto_del_alg()
311 		return -ENOENT;  in crypto_del_alg()
313 	/* We can not unregister core algorithms such as aes-generic.  in crypto_del_alg()
318 	err = -EINVAL;  in crypto_del_alg()
319 	if (!(alg->cra_flags & CRYPTO_ALG_INSTANCE))  in crypto_del_alg()
322 	err = -EBUSY;  in crypto_del_alg()
323 	if (refcount_read(&alg->cra_refcnt) > 2)  in crypto_del_alg()
337 	int exact = 0;  in crypto_add_alg()  local
344 		return -EPERM;  in crypto_add_alg()
346 	if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name))  in crypto_add_alg()
347 		return -EINVAL;  in crypto_add_alg()
349 	if (strlen(p->cru_driver_name))  in crypto_add_alg()
350 		exact = 1;  in crypto_add_alg()
352 	if (priority && !exact)  in crypto_add_alg()
353 		return -EINVAL;  in crypto_add_alg()
355 	alg = crypto_alg_match(p, exact);  in crypto_add_alg()
358 		return -EEXIST;  in crypto_add_alg()
361 	if (strlen(p->cru_driver_name))  in crypto_add_alg()
362 		name = p->cru_driver_name;  in crypto_add_alg()
364 		name = p->cru_name;  in crypto_add_alg()
366 	alg = crypto_alg_mod_lookup(name, p->cru_type, p->cru_mask);  in crypto_add_alg()
373 		alg->cra_priority = nla_get_u32(priority);  in crypto_add_alg()
386 		return -EPERM;  in crypto_del_rng()
393 	[CRYPTO_MSG_NEWALG	- CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg),
394 	[CRYPTO_MSG_DELALG	- CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg),
395 	[CRYPTO_MSG_UPDATEALG	- CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg),
396 	[CRYPTO_MSG_GETALG	- CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg),
397 	[CRYPTO_MSG_DELRNG	- CRYPTO_MSG_BASE] = 0,
398 	[CRYPTO_MSG_GETSTAT	- CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg),
412 	[CRYPTO_MSG_NEWALG	- CRYPTO_MSG_BASE] = { .doit = crypto_add_alg},
413 	[CRYPTO_MSG_DELALG	- CRYPTO_MSG_BASE] = { .doit = crypto_del_alg},
414 	[CRYPTO_MSG_UPDATEALG	- CRYPTO_MSG_BASE] = { .doit = crypto_update_alg},
415 	[CRYPTO_MSG_GETALG	- CRYPTO_MSG_BASE] = { .doit = crypto_report,
418 	[CRYPTO_MSG_DELRNG	- CRYPTO_MSG_BASE] = { .doit = crypto_del_rng },
419 	[CRYPTO_MSG_GETSTAT	- CRYPTO_MSG_BASE] = { .doit = crypto_reportstat},
425 	struct net *net = sock_net(skb->sk);  in crypto_user_rcv_msg()
430 	type = nlh->nlmsg_type;  in crypto_user_rcv_msg()
432 		return -EINVAL;  in crypto_user_rcv_msg()
434 	type -= CRYPTO_MSG_BASE;  in crypto_user_rcv_msg()
437 	if ((type == (CRYPTO_MSG_GETALG - CRYPTO_MSG_BASE) &&  in crypto_user_rcv_msg()
438 	    (nlh->nlmsg_flags & NLM_F_DUMP))) {  in crypto_user_rcv_msg()
442 		if (link->dump == NULL)  in crypto_user_rcv_msg()
443 			return -EINVAL;  in crypto_user_rcv_msg()
452 				.dump = link->dump,  in crypto_user_rcv_msg()
453 				.done = link->done,  in crypto_user_rcv_msg()
456 			err = netlink_dump_start(net->crypto_nlsk, skb, nlh, &c);  in crypto_user_rcv_msg()
467 	if (link->doit == NULL)  in crypto_user_rcv_msg()
468 		return -EINVAL;  in crypto_user_rcv_msg()
470 	return link->doit(skb, nlh, attrs);  in crypto_user_rcv_msg()
486 	net->crypto_nlsk = netlink_kernel_create(net, NETLINK_CRYPTO, &cfg);  in crypto_netlink_init()
487 	return net->crypto_nlsk == NULL ? -ENOMEM : 0;  in crypto_netlink_init()
492 	netlink_kernel_release(net->crypto_nlsk);  in crypto_netlink_exit()
493 	net->crypto_nlsk = NULL;  in crypto_netlink_exit()
516 MODULE_ALIAS("net-pf-16-proto-21");