linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * kernel userspace event delivery

 *

 * Copyright (C) 2004 Red Hat, Inc.  All rights reserved.

 * Copyright (C) 2004 Novell, Inc.  All rights reserved.

 * Copyright (C) 2004 IBM, Inc. All rights reserved.

 *

 * Authors:

 *  Robert Love     <rml@novell.com>

 *  Kay Sievers     <kay.sievers@vrfy.org>

 *  Arjan van de Ven    <arjanv@redhat.com>

 *  Greg Kroah-Hartman  <greg@kroah.com>

 */

​

#include <linux/spinlock.h>

#include <linux/string.h>

#include <linux/kobject.h>

#include <linux/export.h>

#include <linux/kmod.h>

#include <linux/slab.h>

#include <linux/socket.h>

#include <linux/skbuff.h>

#include <linux/netlink.h>

#include <linux/uidgid.h>

#include <linux/uuid.h>

#include <linux/ctype.h>

#include <net/sock.h>

#include <net/netlink.h>

#include <net/net_namespace.h>

​

​

u64 uevent_seqnum;

#ifdef CONFIG_UEVENT_HELPER

char uevent_helper[UEVENT_HELPER_PATH_LEN] = CONFIG_UEVENT_HELPER_PATH;

#endif

​

struct uevent_sock {

    struct list_head list;

    struct sock *sk;

};

​

#ifdef CONFIG_NET

static LIST_HEAD(uevent_sock_list);

#endif

​

/* This lock protects uevent_seqnum and uevent_sock_list */

static DEFINE_MUTEX(uevent_sock_mutex);

​

/* the strings here must match the enum in include/linux/kobject.h */

static const char *kobject_actions[] = {

    [KOBJ_ADD] =        "add",

    [KOBJ_REMOVE] =     "remove",

    [KOBJ_CHANGE] =     "change",

    [KOBJ_MOVE] =       "move",

    [KOBJ_ONLINE] =     "online",

    [KOBJ_OFFLINE] =    "offline",

    [KOBJ_BIND] =       "bind",

    [KOBJ_UNBIND] =     "unbind",

};

​

static int kobject_action_type(const char *buf, size_t count,

                   enum kobject_action *type,