cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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netlink.c (2465B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Netlink routines for CIFS
      4 *
      5 * Copyright (c) 2020 Samuel Cabrero <scabrero@suse.de>
      6 */
      7
      8#include <net/genetlink.h>
      9#include <uapi/linux/cifs/cifs_netlink.h>
     10
     11#include "netlink.h"
     12#include "cifsglob.h"
     13#include "cifs_debug.h"
     14#include "cifs_swn.h"
     15
     16static const struct nla_policy cifs_genl_policy[CIFS_GENL_ATTR_MAX + 1] = {
     17	[CIFS_GENL_ATTR_SWN_REGISTRATION_ID]	= { .type = NLA_U32 },
     18	[CIFS_GENL_ATTR_SWN_NET_NAME]		= { .type = NLA_STRING },
     19	[CIFS_GENL_ATTR_SWN_SHARE_NAME]		= { .type = NLA_STRING },
     20	[CIFS_GENL_ATTR_SWN_IP]			= { .len = sizeof(struct sockaddr_storage) },
     21	[CIFS_GENL_ATTR_SWN_NET_NAME_NOTIFY]	= { .type = NLA_FLAG },
     22	[CIFS_GENL_ATTR_SWN_SHARE_NAME_NOTIFY]	= { .type = NLA_FLAG },
     23	[CIFS_GENL_ATTR_SWN_IP_NOTIFY]		= { .type = NLA_FLAG },
     24	[CIFS_GENL_ATTR_SWN_KRB_AUTH]		= { .type = NLA_FLAG },
     25	[CIFS_GENL_ATTR_SWN_USER_NAME]		= { .type = NLA_STRING },
     26	[CIFS_GENL_ATTR_SWN_PASSWORD]		= { .type = NLA_STRING },
     27	[CIFS_GENL_ATTR_SWN_DOMAIN_NAME]	= { .type = NLA_STRING },
     28	[CIFS_GENL_ATTR_SWN_NOTIFICATION_TYPE]	= { .type = NLA_U32 },
     29	[CIFS_GENL_ATTR_SWN_RESOURCE_STATE]	= { .type = NLA_U32 },
     30	[CIFS_GENL_ATTR_SWN_RESOURCE_NAME]	= { .type = NLA_STRING},
     31};
     32
     33static const struct genl_ops cifs_genl_ops[] = {
     34	{
     35		.cmd = CIFS_GENL_CMD_SWN_NOTIFY,
     36		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
     37		.doit = cifs_swn_notify,
     38	},
     39};
     40
     41static const struct genl_multicast_group cifs_genl_mcgrps[] = {
     42	[CIFS_GENL_MCGRP_SWN] = { .name = CIFS_GENL_MCGRP_SWN_NAME },
     43};
     44
     45struct genl_family cifs_genl_family = {
     46	.name		= CIFS_GENL_NAME,
     47	.version	= CIFS_GENL_VERSION,
     48	.hdrsize	= 0,
     49	.maxattr	= CIFS_GENL_ATTR_MAX,
     50	.module		= THIS_MODULE,
     51	.policy		= cifs_genl_policy,
     52	.ops		= cifs_genl_ops,
     53	.n_ops		= ARRAY_SIZE(cifs_genl_ops),
     54	.mcgrps		= cifs_genl_mcgrps,
     55	.n_mcgrps	= ARRAY_SIZE(cifs_genl_mcgrps),
     56};
     57
     58/**
     59 * cifs_genl_init - Register generic netlink family
     60 *
     61 * Return zero if initialized successfully, otherwise non-zero.
     62 */
     63int cifs_genl_init(void)
     64{
     65	int ret;
     66
     67	ret = genl_register_family(&cifs_genl_family);
     68	if (ret < 0) {
     69		cifs_dbg(VFS, "%s: failed to register netlink family\n",
     70				__func__);
     71		return ret;
     72	}
     73
     74	return 0;
     75}
     76
     77/**
     78 * cifs_genl_exit - Unregister generic netlink family
     79 */
     80void cifs_genl_exit(void)
     81{
     82	int ret;
     83
     84	ret = genl_unregister_family(&cifs_genl_family);
     85	if (ret < 0) {
     86		cifs_dbg(VFS, "%s: failed to unregister netlink family\n",
     87				__func__);
     88	}
     89}