70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 Hammerspace Inc
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*/
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#include <linux/module.h>
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#include <linux/kobject.h>
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#include <linux/sysfs.h>
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#include <linux/fs.h>
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#include <linux/slab.h>
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#include <linux/netdevice.h>
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#include "sysfs.h"
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struct kobject *nfs_client_kobj;
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static struct kset *nfs_client_kset;
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static void nfs_netns_object_release(struct kobject *kobj)
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{
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kfree(kobj);
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}
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static const struct kobj_ns_type_operations *nfs_netns_object_child_ns_type(
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struct kobject *kobj)
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{
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return &net_ns_type_operations;
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}
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static struct kobj_type nfs_netns_object_type = {
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.release = nfs_netns_object_release,
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.sysfs_ops = &kobj_sysfs_ops,
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.child_ns_type = nfs_netns_object_child_ns_type,
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};
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static struct kobject *nfs_netns_object_alloc(const char *name,
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struct kset *kset, struct kobject *parent)
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{
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struct kobject *kobj;
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kobj = kzalloc(sizeof(*kobj), GFP_KERNEL);
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if (kobj) {
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kobj->kset = kset;
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if (kobject_init_and_add(kobj, &nfs_netns_object_type,
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parent, "%s", name) == 0)
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return kobj;
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kobject_put(kobj);
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}
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return NULL;
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}
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int nfs_sysfs_init(void)
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{
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nfs_client_kset = kset_create_and_add("nfs", NULL, fs_kobj);
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if (!nfs_client_kset)
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return -ENOMEM;
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nfs_client_kobj = nfs_netns_object_alloc("net", nfs_client_kset, NULL);
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if (!nfs_client_kobj) {
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kset_unregister(nfs_client_kset);
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nfs_client_kset = NULL;
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return -ENOMEM;
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}
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return 0;
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}
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void nfs_sysfs_exit(void)
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{
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kobject_put(nfs_client_kobj);
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kset_unregister(nfs_client_kset);
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}
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