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![Eric Paris](/assets/img/avatar_default.png)
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>
116 lines
2.4 KiB
C
116 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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