forked from Minki/linux
c544c028e4
This patch changes netlink.c to fix whitespace and syntax issues. Things that
are fixed may include (does not not have to include)
whitespace at end of lines
spaces followed by tabs
spaces used instead of tabs
spacing around parenthesis
locateion of { around struct and else clauses
location of * in pointer declarations
removal of initialization of static data to keep it in the right section
useless {} in if statemetns
useless checking for NULL before kfree
fixing of the indentation depth of switch statements
and any number of other things I forgot to mention
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
117 lines
2.4 KiB
C
117 lines
2.4 KiB
C
/*
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* Netlink event notifications for SELinux.
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*
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* Author: James Morris <jmorris@redhat.com>
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*
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* Copyright (C) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2,
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* as published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/skbuff.h>
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#include <linux/netlink.h>
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#include <linux/selinux_netlink.h>
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#include <net/net_namespace.h>
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static struct sock *selnl;
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static int selnl_msglen(int msgtype)
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{
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int ret = 0;
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switch (msgtype) {
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case SELNL_MSG_SETENFORCE:
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ret = sizeof(struct selnl_msg_setenforce);
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break;
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case SELNL_MSG_POLICYLOAD:
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ret = sizeof(struct selnl_msg_policyload);
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break;
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default:
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BUG();
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}
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return ret;
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}
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static void selnl_add_payload(struct nlmsghdr *nlh, int len, int msgtype, void *data)
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{
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switch (msgtype) {
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case SELNL_MSG_SETENFORCE: {
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struct selnl_msg_setenforce *msg = NLMSG_DATA(nlh);
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memset(msg, 0, len);
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msg->val = *((int *)data);
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break;
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}
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case SELNL_MSG_POLICYLOAD: {
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struct selnl_msg_policyload *msg = NLMSG_DATA(nlh);
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memset(msg, 0, len);
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msg->seqno = *((u32 *)data);
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break;
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}
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default:
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BUG();
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}
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}
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static void selnl_notify(int msgtype, void *data)
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{
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int len;
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sk_buff_data_t tmp;
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struct sk_buff *skb;
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struct nlmsghdr *nlh;
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len = selnl_msglen(msgtype);
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skb = alloc_skb(NLMSG_SPACE(len), GFP_USER);
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if (!skb)
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goto oom;
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tmp = skb->tail;
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nlh = NLMSG_PUT(skb, 0, 0, msgtype, len);
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selnl_add_payload(nlh, len, msgtype, data);
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nlh->nlmsg_len = skb->tail - tmp;
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NETLINK_CB(skb).dst_group = SELNLGRP_AVC;
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netlink_broadcast(selnl, skb, 0, SELNLGRP_AVC, GFP_USER);
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out:
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return;
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nlmsg_failure:
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kfree_skb(skb);
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oom:
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printk(KERN_ERR "SELinux: OOM in %s\n", __func__);
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goto out;
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}
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void selnl_notify_setenforce(int val)
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{
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selnl_notify(SELNL_MSG_SETENFORCE, &val);
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}
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void selnl_notify_policyload(u32 seqno)
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{
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selnl_notify(SELNL_MSG_POLICYLOAD, &seqno);
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}
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static int __init selnl_init(void)
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{
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selnl = netlink_kernel_create(&init_net, NETLINK_SELINUX,
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SELNLGRP_MAX, NULL, NULL, THIS_MODULE);
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if (selnl == NULL)
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panic("SELinux: Cannot create netlink socket.");
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netlink_set_nonroot(NETLINK_SELINUX, NL_NONROOT_RECV);
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return 0;
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}
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__initcall(selnl_init);
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