diff options
Diffstat (limited to 'fs/dlm/netlink.c')
-rw-r--r-- | fs/dlm/netlink.c | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/fs/dlm/netlink.c b/fs/dlm/netlink.c deleted file mode 100644 index 4de4b8651c6c..000000000000 --- a/fs/dlm/netlink.c +++ /dev/null @@ -1,139 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2007 Red Hat, Inc. All rights reserved. - */ - -#include <net/genetlink.h> -#include <linux/dlm.h> -#include <linux/dlm_netlink.h> -#include <linux/gfp.h> - -#include "dlm_internal.h" - -static uint32_t dlm_nl_seqnum; -static uint32_t listener_nlportid; - -static struct genl_family family; - -static int prepare_data(u8 cmd, struct sk_buff **skbp, size_t size) -{ - struct sk_buff *skb; - void *data; - - skb = genlmsg_new(size, GFP_NOFS); - if (!skb) - return -ENOMEM; - - /* add the message headers */ - data = genlmsg_put(skb, 0, dlm_nl_seqnum++, &family, 0, cmd); - if (!data) { - nlmsg_free(skb); - return -EINVAL; - } - - *skbp = skb; - return 0; -} - -static struct dlm_lock_data *mk_data(struct sk_buff *skb) -{ - struct nlattr *ret; - - ret = nla_reserve(skb, DLM_TYPE_LOCK, sizeof(struct dlm_lock_data)); - if (!ret) - return NULL; - return nla_data(ret); -} - -static int send_data(struct sk_buff *skb) -{ - struct genlmsghdr *genlhdr = nlmsg_data((struct nlmsghdr *)skb->data); - void *data = genlmsg_data(genlhdr); - - genlmsg_end(skb, data); - - return genlmsg_unicast(&init_net, skb, listener_nlportid); -} - -static int user_cmd(struct sk_buff *skb, struct genl_info *info) -{ - listener_nlportid = info->snd_portid; - printk("user_cmd nlpid %u\n", listener_nlportid); - return 0; -} - -static const struct genl_small_ops dlm_nl_ops[] = { - { - .cmd = DLM_CMD_HELLO, - .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .doit = user_cmd, - }, -}; - -static struct genl_family family __ro_after_init = { - .name = DLM_GENL_NAME, - .version = DLM_GENL_VERSION, - .small_ops = dlm_nl_ops, - .n_small_ops = ARRAY_SIZE(dlm_nl_ops), - .resv_start_op = DLM_CMD_HELLO + 1, - .module = THIS_MODULE, -}; - -int __init dlm_netlink_init(void) -{ - return genl_register_family(&family); -} - -void dlm_netlink_exit(void) -{ - genl_unregister_family(&family); -} - -static void fill_data(struct dlm_lock_data *data, struct dlm_lkb *lkb) -{ - struct dlm_rsb *r = lkb->lkb_resource; - - memset(data, 0, sizeof(struct dlm_lock_data)); - - data->version = DLM_LOCK_DATA_VERSION; - data->nodeid = lkb->lkb_nodeid; - data->ownpid = lkb->lkb_ownpid; - data->id = lkb->lkb_id; - data->remid = lkb->lkb_remid; - data->status = lkb->lkb_status; - data->grmode = lkb->lkb_grmode; - data->rqmode = lkb->lkb_rqmode; - if (lkb->lkb_ua) - data->xid = lkb->lkb_ua->xid; - if (r) { - data->lockspace_id = r->res_ls->ls_global_id; - data->resource_namelen = r->res_length; - memcpy(data->resource_name, r->res_name, r->res_length); - } -} - -void dlm_timeout_warn(struct dlm_lkb *lkb) -{ - struct sk_buff *send_skb; - struct dlm_lock_data *data; - size_t size; - int rv; - - size = nla_total_size(sizeof(struct dlm_lock_data)) + - nla_total_size(0); /* why this? */ - - rv = prepare_data(DLM_CMD_TIMEOUT, &send_skb, size); - if (rv < 0) - return; - - data = mk_data(send_skb); - if (!data) { - nlmsg_free(send_skb); - return; - } - - fill_data(data, lkb); - - send_data(send_skb); -} - |